1. A pedestrian warning indicator for low-speed running of a vehicle comprises a base (1), a shell (2), a front plate (3), a second groove (4) and a controller; the method is characterized in that: a first groove (5) is formed in the shell (2); the first groove (5) penetrates through two ends of the shell (2); a clamping block (51) is arranged in the first groove (5); the number of the clamping blocks (51) is two, the two clamping blocks (51) are connected in the first groove (5) in a sliding mode, the cross section of one end, away from each other, of each clamping block (51) is triangular, and the inclined edge of each triangle faces the base (1); a first spring (52) is arranged in the first groove (5); two ends of the first spring (52) are fixedly connected with the end faces, close to the fixture block (51), of the first spring; a third groove (11) is formed in the base (1); the number of the third grooves (11) is two, the two third grooves (11) are positioned on two sides of the second groove (4), and the third grooves (11) are communicated with the second groove (4); the outer side wall of the base (1) is hinged with an L-shaped rod (12); the lower end of the L-shaped rod (12) is arc-shaped, one end of the L-shaped rod (12) penetrates through the base (1) and is located in the third groove (11), and the L-shaped rod (12) is connected with the base (1) in a sliding mode.

2. A vehicular low-speed-travel pedestrian alarm according to claim 1, characterized in that: a second spring (14) is fixedly connected to the L-shaped rod (12); the other end of the second spring (14) is fixedly connected with the base (1).

3. A vehicular low-speed-travel pedestrian alarm according to claim 2, characterized in that: a magnet (15) is arranged at the bottom of the second groove (4); the bottom of the shell (2) is made of metal.

4. A vehicular low-speed-travel pedestrian alarm according to claim 3, characterized in that: a fourth groove (16) and a fifth groove (17) are formed in the base (1); the number of the fourth grooves (16) and the number of the fifth grooves (17) are two, the two fourth grooves (16) are positioned on two sides of the second groove (4), the two fifth grooves (17) are positioned on two sides of the second groove (4), and the fourth grooves (16) are communicated with the fifth grooves (17); a first block (18) is connected in the fourth groove (16) in a sliding manner; a second block (19) is connected in the fifth groove (17) in a sliding manner; the section of one end, close to the third groove (11), of the first block (18) is trapezoidal, and the section of one end, far away from the third groove (11), of the first block (18) is triangular; the section shape of one end, close to the fourth groove (16), of the second block (19) is triangular, the second block (19) is attached to the first block (18), and the second block (19) is made of soft materials.

5. A vehicular low-speed-travel pedestrian alarm according to claim 4, characterized in that: one end of the first block (18) close to the third groove (11) in the initial state is in contact with the L-shaped rod (12); the L-shaped bar (12) supports a first block (18).

6. A vehicular low-speed-travel pedestrian alarm according to claim 5, characterized in that: one end of the L-shaped rod (12) close to the fixture block (51) is semicircular.

Background

With the exhaustion of energy and the arrival of energy crisis, more and more host plants seek new energy ways; new energy automobiles will become the development direction and trend in the future, while electric automobiles are superior in the new energy automobiles; because the electric automobile has no traditional power system engine, the noise of the electric automobile can be very low when the electric automobile runs at low speed; the low noise is a good aspect, but simultaneously, unsafe factors are brought, and the pedestrian is not easy to perceive the electric vehicle coming from the rear to cause accidents, so that a special warning indicator for prompting the pedestrian during low-speed running of the electric vehicle is developed; however, the existing assembled warning device is complex to assemble, and can be assembled and disassembled only by means of external auxiliary tools, so that the assembly efficiency during production is influenced, and the maintenance and the overhaul in the later period are inconvenient.

The Chinese patent with the application number of 2019201541065 discloses a pedestrian warning indicator for low-speed running of a vehicle, which comprises a base and an upper cover, wherein the upper cover is installed at the top of the base, V-shaped elastic clamps are installed on two side walls of the upper cover, springs are installed in inner cavities of the V-shaped elastic clamps, fixed blocks are installed on two sides of the top of the base, and V-shaped grooves are formed in the tops of the fixed blocks; according to the technical scheme, the V-shaped elastic clamp is pressed towards the side wall of the upper cover and clamped into the inner cavity of the V-shaped groove, then the V-shaped elastic clamp is released to restore the original shape under the elastic action of the spring, the latch on one side is clamped into the inner cavity of the clamping groove on one side of the inner cavity of the V-shaped groove, and under the supporting action of the spring, the V-shaped elastic clamp has certain tension, so that the latch is tightly clamped into the inner cavity of the clamping groove to prevent the upper cover from falling off; but the shape that is used for connecting the mechanism of attention device among this technical scheme is for falling trapezoidal, and the vehicle that uses this technical scheme is when passing through mountain area, ground unevenness such as rural area regional, and this vehicle low-speed pedestrian's attention device of driving can rock along with the vehicle together, and sealed pad makes and can rock relatively between upper cover and the base to the back latch that traveles for a long time is wearing and tearing in the draw-in groove, and the vehicle low-speed pedestrian's attention device of driving can break away from the base, and then causes the limitation of this scheme.

In view of the above, in order to overcome the above technical problems, the present invention provides a pedestrian warning device for low speed driving of a vehicle, which solves the above technical problems.

Disclosure of Invention

In order to make up the defects of the prior art, the pedestrian warning device for low-speed running of the vehicle provided by the invention has the advantages that the two clamping blocks are extruded by the base and slide into the first groove, and then the clamping blocks are clamped and matched with the groove walls of the third groove, so that the aim of stably fixing the shell in the second groove is fulfilled, meanwhile, the clamping blocks are retracted into the first groove by pressing the L-shaped rod, the aim of conveniently detaching the shell from the base is fulfilled, the pedestrian warning device for low-speed running of the vehicle is more firmly installed, the vehicle cannot slip from the base when being shaken for a long time, and the using effect of the pedestrian warning device for low-speed running of the vehicle is ensured.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a pedestrian warning indicator for low-speed running of a vehicle, which comprises a base, a shell, a front plate, a second groove and a controller, wherein the base is provided with a front plate and a rear plate; a first groove is formed in the shell; the first groove penetrates through two ends of the shell; a clamping block is arranged in the first groove; the number of the clamping blocks is two, the two clamping blocks are connected in the first groove in a sliding mode, the cross section of one end, far away from each other, of each clamping block is triangular, and the inclined edge of each triangle faces the base; a first spring is arranged in the first groove; two ends of the first spring are fixedly connected with the end faces of the clamping blocks, which are close to each other; a third groove is formed in the base; the number of the third grooves is two, the two third grooves are positioned on two sides of the second groove, and the third grooves are communicated with the second groove; the outer side wall of the base is hinged with an L-shaped rod; the lower end of the L-shaped rod is arc-shaped, one end of the L-shaped rod penetrates through the base and is positioned in the third groove, and the L-shaped rod is in sliding connection with the base;

when the alarm works, the existing assembled alarm is complex to assemble and disassemble, and can be assembled and disassembled by means of external auxiliary tools, so that the assembly efficiency of production is influenced, and the maintenance and the overhaul at the later stage are inconvenient;

therefore, when the clamping device is used by a worker, one end of the shell slides into the second groove, the two ends, far away from each other, of the two clamping blocks are in contact with the base, and the two clamping blocks are extruded by the base into the first groove to slide along the directions close to each other along with the continuous sliding of the shell along the second groove until the two clamping blocks completely enter the first groove; the shell slides to the bottom of the second groove along with the continuous movement of the shell, at the moment, the two clamping blocks stop contacting with the base, and the two clamping blocks are mutually far away under the action of the first spring, so that two mutually far ends of the two clamping blocks are positioned in the corresponding third groove, at the moment, the clamping blocks are clamped by the base, the shell cannot slip from the second groove, and the pedestrian warning device for low-speed driving of the vehicle is more stably installed; when a worker needs to take down the shell to overhaul the pedestrian warning device during low-speed running of the vehicle, the two L-shaped rods are pressed, so that the L-shaped rods slide towards the direction close to the fixture blocks, the L-shaped rods are in contact with the fixture blocks and extrude the fixture blocks, the two fixture blocks slide close to each other in the first groove until the two fixture blocks are retracted into the first groove, the worker pulls the shell, the shell slides along the second groove, the two far-away ends of the two fixture blocks abut against the groove wall of the second groove, and the worker stops pressing the L-shaped rods and sliding the L-shaped rods, so that the L-shaped rods return to the original positions; then, the worker continues to pull the shell until the shell is pulled out of the second groove; the whole vehicle low-speed running pedestrian warning device is transversely arranged in an automobile, and the front plate faces the automobile head, so that the vehicle low-speed running pedestrian warning device can conveniently scan pedestrians; in the prior art, the pedestrian warning device for low-speed running of the vehicle is arranged on the vehicle, the opening at the outer end of the base is large, and the opening at the inner end is small; the pedestrian warning device for the low-speed running of the vehicle is prevented from being separated from the base, and the infrared distance measuring sensor in the pedestrian warning device for the low-speed running of the vehicle is damaged along with shaking of the vehicle, so that the infrared distance measuring sensor in the pedestrian warning device for the low-speed running of the vehicle cannot scan and measure the distance of the pedestrian normally, the pedestrian in front of a driver cannot be reminded, and tragic conditions are caused;

according to the pedestrian warning device, the two clamping blocks are extruded by the base to slide into the first groove, and then the clamping blocks are clamped and matched with the groove walls of the third groove, so that the purpose that the shell is stably fixed in the second groove is achieved, meanwhile, the clamping blocks are retracted into the first groove by pressing the L-shaped rod, the purpose that the shell is convenient to detach from the base is achieved, the pedestrian warning device for low-speed running of the vehicle is more tightly installed, the vehicle cannot slip from the base when being shaken for a long time, and the using effect of the pedestrian warning device for low-speed running of the vehicle is guaranteed.

Preferably, the L-shaped rod is fixedly connected with a second spring; the other end of the second spring is fixedly connected with the base;

when the clamping block is in work, one end of the L-shaped rod is not positioned in the second groove in an initial state, a worker presses the L-shaped rod, the L-shaped rod rotates to press the double-number spring, and meanwhile one end, close to the clamping block, of the L-shaped rod extrudes the clamping block; after the L-shaped rod is loosened by a worker, the second spring pushes the L-shaped rod to rotate towards the opposite direction until the L-shaped rod returns to the original position, and then the second spring restores to the original state;

according to the invention, the L-shaped rod is pressed by a worker, rotates to compress the second spring, and then is matched with the second spring to push the L-shaped rod to return to the original position, so that the purpose that the L-shaped rod automatically returns to the original position after the worker stops pressing the L-shaped rod is achieved, the action that the worker manually returns the L-shaped rod to the original position is reduced, and meanwhile, the position of the L-shaped rod is limited by the second spring, so that the L-shaped rod cannot be positioned in the second groove when the worker slides the shell into the second groove, the situation that the L-shaped rod blocks the shell from entering the second groove is prevented, and meanwhile, the situation that the L-shaped rod collides with the shell when the shell is installed is prevented, so that the situation that the shell slides to the bottom of the second groove is prevented.

Preferably, the bottom of the second groove is provided with a magnet; the bottom of the shell is made of metal;

when the shell is close to the bottom of the second groove, the magnet at the bottom of the second groove generates suction to the bottom of the shell, the magnet sucks the shell to the bottom of the second groove, and the shell does not need to slide to the bottom of the second groove through manual pressing; when the automobile runs, the magnet always attracts the shell, so that the fixing effect of the fixture block on the shell is enhanced, and the shell is more stably connected with the base;

according to the automobile shell, when the shell is close to the bottom of the second groove, the magnet absorbs the shell to the bottom of the second groove, so that the purpose of reducing the labor intensity of workers is achieved, meanwhile, when an automobile runs, the magnet always absorbs the shell, the fixing effect of the fixture block on the shell is enhanced, the shell is more stably connected with the base, and the using effect of the automobile shell is improved.

Preferably, a fourth groove and a fifth groove are formed in the base; the number of the fourth grooves and the number of the fifth grooves are two, the two fourth grooves are located on two sides of the second groove, the two fifth grooves are located on two sides of the second groove, and the fourth grooves are communicated with the fifth grooves; a first block is connected in the fourth groove in a sliding manner; a second block is connected in the fifth groove in a sliding manner; the section of one end, close to the third groove, of the first block is trapezoidal, and the section of one end, far away from the third groove, of the first block is triangular; the section of one end, close to the fourth groove, of the second block is triangular, the second block is attached to the first block, and the second block is made of soft materials;

when the device works, a worker puts the shell into the second groove, so that the first spring pushes the two clamping blocks, the clamping blocks abut against the inclined end face of the first block, the first block moves upwards, the first block pushes the second block by depending on the inclined face between the first block and the second block, and the two second blocks abut against the shell and clamp the shell; the fixture block continues to push the first block until the first block is positioned in the fourth groove, and at the moment, the first block is contacted with the end face of the fixture block, and the fixture block supports the first block; when a worker presses the L-shaped rod, the clamping block retracts into the first groove, so that the first block slides to the bottom of the second groove in the fourth groove until the first block is contacted with the L-shaped rod, and the first block returns to the original position;

according to the invention, the first block and the second block are pushed by the clamping block, and the second block is abutted against the shell, so that the limiting effect on the shell is further enhanced, the shell cannot slide out of the second groove when a vehicle runs on a rugged road, the service performance of the invention is further enhanced, and the practical application effect of the invention is improved.

Preferably, one end of the first block, which is close to the third groove, is in contact with the L-shaped rod; the L-shaped rod supports a first block;

when the clamping device works, the first block is in contact with the L-shaped rod in the initial state, the first block is prevented from slipping from the fourth groove in the initial state, so that the first block cannot be pushed by the clamping block when the shell enters the second groove, the second block cannot clamp the shell, and the practical application effect of the clamping device is ensured.

Preferably, one end of the L-shaped rod close to the fixture block is semicircular;

when the L-shaped rod pressing device works, an operator presses the L-shaped rod, one end, close to the fixture block, of the L-shaped rod presses the fixture block, the shape of one end, close to the fixture block, of the L-shaped rod is arc-shaped, sliding friction force between the L-shaped rod and the surface of the fixture block is reduced, the operator can easily press the fixture block into the first groove by pressing the L-shaped rod, the fact that the operator presses the L-shaped rod immovably due to small strength is prevented, meanwhile, the situation that the L-shaped rod is broken due to the fact that the friction force between the L-shaped rod and the surface of the fixture block is too large and the force for pressing the L-shaped rod is increased is prevented, the using effect of the L-shaped rod pressing device is guaranteed, and the practicability of the L-shaped rod pressing device is improved.

The invention has the following beneficial effects:

1. according to the pedestrian warning device, the two clamping blocks are extruded by the base to slide into the first groove, and then the clamping blocks are clamped and matched with the groove walls of the third groove, so that the purpose that the shell is stably fixed in the second groove is achieved, meanwhile, the clamping blocks are retracted into the first groove by pressing the L-shaped rod, the purpose that the shell is convenient to detach from the base is achieved, the pedestrian warning device for low-speed running of the vehicle is more tightly installed, the vehicle cannot slip from the base when being shaken for a long time, and the using effect of the pedestrian warning device for low-speed running of the vehicle is guaranteed.

2. According to the invention, the L-shaped rod is pressed by a worker, rotates to compress the second spring, and then is matched with the second spring to push the L-shaped rod to return to the original position, so that the purpose that the L-shaped rod automatically returns to the original position after the worker stops pressing the L-shaped rod is achieved, the action that the worker manually returns the L-shaped rod to the original position is reduced, and meanwhile, the position of the L-shaped rod is limited by the second spring, so that the L-shaped rod cannot be positioned in the second groove when the worker slides the shell into the second groove, the situation that the L-shaped rod blocks the shell from entering the second groove is prevented, and meanwhile, the situation that the L-shaped rod collides with the shell when the shell is installed is prevented, so that the situation that the shell slides to the bottom of the second groove is prevented.

3. According to the automobile shell, when the shell is close to the bottom of the second groove, the magnet absorbs the shell to the bottom of the second groove, so that the purpose of reducing the labor intensity of workers is achieved, meanwhile, when an automobile runs, the magnet always absorbs the shell, the fixing effect of the fixture block on the shell is enhanced, the shell is more stably connected with the base, and the using effect of the automobile shell is improved.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a partial cross-sectional view of the present invention;

FIG. 3 is an enlarged view at A in FIG. 2;

in the figure: 1. a base; 2. a housing; 3. a front plate; 4. a second groove; 5. a first groove; 51. a clamping block; 52. a first spring; 11. a groove III; 12. an L-shaped rod; 14. a second spring; 15. a magnet; 16. a fourth groove; 17. a fifth groove; 18. a first block; 19. block number two.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 3, the pedestrian warning indicator for low-speed driving of a vehicle according to the present invention comprises a base 1, a housing 2, a front plate 3, a second groove 4 and a controller; a first groove 5 is formed in the shell 2; the first groove 5 penetrates through two ends of the shell 2; a clamping block 51 is arranged in the first groove 5; the number of the fixture blocks 51 is two, the two fixture blocks 51 are slidably connected in the first groove 5, the cross section of one end, away from each other, of each fixture block 51 is triangular, and the inclined edge of each triangle faces the base 1; a first spring 52 is arranged in the first groove 5; two ends of the first spring 52 are fixedly connected with the end faces, close to the fixture block 51, of the fixture block 51; a third groove 11 is formed in the base 1; the number of the third grooves 11 is two, the two third grooves 11 are positioned on two sides of the second groove 4, and the third grooves 11 are communicated with the second groove 4; the outer side wall of the base 1 is hinged with an L-shaped rod 12; the lower end of the L-shaped rod 12 is arc-shaped, one end of the L-shaped rod 12 penetrates through the base 1 and is positioned in the third groove 11, and the L-shaped rod 12 is in sliding connection with the base 1;

when the alarm works, the existing assembled alarm is complex to assemble and disassemble, and can be assembled and disassembled by means of external auxiliary tools, so that the assembly efficiency of production is influenced, and the maintenance and the overhaul at the later stage are inconvenient;

therefore, when the sliding type sliding door is used, a worker slides one end of the shell 2 into the second groove 4, two ends, far away from each other, of the two fixture blocks 51 are in contact with the base 1, and along with the fact that the shell 2 continues to slide along the second groove 4, the two fixture blocks 51 are extruded by the base 1 into the first groove 5 and slide along the mutually approaching direction until the two fixture blocks 51 completely enter the first groove 5; along with the continuous movement of the shell 2, the shell 2 slides to the bottom of the second groove 4, at the moment, the two fixture blocks 51 stop contacting with the base 1, and the two fixture blocks 51 are separated from each other under the action of the first spring 52, so that the two separated ends of the two fixture blocks 51 are positioned in the corresponding third groove 11, at the moment, the fixture blocks 51 are clamped by the base 1, the shell 2 cannot slip from the second groove 4, and the pedestrian warning device for low-speed vehicle driving is more stably installed; when a worker needs to take down the shell 2 to overhaul the pedestrian warning device during low-speed running of the vehicle, the two L-shaped rods 12 are pressed, so that the L-shaped rods 12 slide towards the direction close to the fixture blocks 51, the L-shaped rods 12 are in contact with the fixture blocks 51 and press the fixture blocks 51, the two fixture blocks 51 slide close to each other in the first groove 5 until the two fixture blocks 51 are retracted into the first groove 5, the worker pulls the shell 2 at the moment, the shell 2 slides along the second groove 4, two ends, far away from each other, of the two fixture blocks 51 abut against the groove wall of the second groove 4, and the worker stops pressing the L-shaped rods 12 and slides the L-shaped rods 12 at the moment, so that the L-shaped rods 12 return to the original positions; then, the worker continuously pulls the shell 2 until the shell 2 is pulled out of the second groove 4; the whole vehicle low-speed running pedestrian warning device is transversely arranged in an automobile, and the front plate 3 faces the automobile head, so that the vehicle low-speed running pedestrian warning device can conveniently scan pedestrians; in the prior art, the pedestrian warning device for low-speed running of the vehicle is arranged on the vehicle, the opening at the outer end of the base 1 is large, and the opening at the inner end is small; the pedestrian warning device for low-speed running of the vehicle is prevented from being separated from the base 1, and the infrared distance measuring sensor in the pedestrian warning device for low-speed running of the vehicle is damaged along with shaking of the vehicle, so that the infrared distance measuring sensor in the pedestrian warning device for low-speed running of the vehicle cannot scan and measure the distance of the pedestrian normally, and the pedestrian in front of a driver cannot be reminded, and tragic conditions are caused;

according to the invention, the two clamping blocks 51 are extruded by the base 1 to slide into the first groove 5 and then are clamped and matched with the groove wall of the third groove 11, so that the aim of stably fixing the shell 2 in the second groove 4 is achieved, meanwhile, the clamping blocks 51 are retracted into the first groove 5 by pressing the L-shaped rod 12, so that the aim of conveniently detaching the shell 2 from the base 1 is achieved, the installation of the pedestrian warning device for low-speed running of the vehicle is more firm, the vehicle cannot slip from the base 1 when shaking for a long time, and the use effect of the pedestrian warning device for low-speed running of the vehicle is ensured.

As an embodiment of the invention, a second spring 14 is fixedly connected to the L-shaped rod 12; the other end of the second spring 14 is fixedly connected with the base 1;

during work, one end of the L-shaped rod 12 is not located in the second groove 4 in the initial state, a worker presses the L-shaped rod 12, the L-shaped rod 12 rotates to press the two-dimensional spring 14, and meanwhile one end, close to the fixture block 51, of the L-shaped rod 12 presses the fixture block 51; after the worker releases the L-shaped rod 12, the second spring 14 pushes the L-shaped rod 12 to rotate in the opposite direction until the L-shaped rod 12 returns to the original position, and then the second spring 14 restores to the original state;

according to the invention, the L-shaped rod 12 is pressed by a worker, the L-shaped rod 12 rotates to press the secondary spring 14, and then the secondary spring 14 restores to push the L-shaped rod 12 to return to the original position to be matched, so that the purpose that the L-shaped rod 12 automatically returns to the original position after the worker stops pressing the L-shaped rod 12 is achieved, the action that the worker manually restores the L-shaped rod 12 is reduced, meanwhile, the position of the L-shaped rod 12 is limited by the secondary spring 14, the L-shaped rod 12 cannot be positioned in the secondary groove 4 when the worker slides the shell 2 into the secondary groove 4, the situation that the shell 2 is blocked by the L-shaped rod 12 to enter the secondary groove 4 is prevented, and the situation that the shell 2 slides to the bottom of the secondary groove 4 is prevented from occurring when the shell 2 is installed.

As an embodiment of the invention, a magnet 15 is arranged at the bottom of the second groove 4; the bottom of the shell 2 is made of metal;

when the shell 2 is close to the bottom of the second groove 4, the magnet 15 at the bottom of the second groove 4 generates suction to the bottom of the shell 2, the magnet 15 sucks the shell 2 to the bottom of the second groove 4, and the shell 2 does not need to slide to the bottom of the second groove 4 through manual pressing; when the automobile runs, the magnet 15 always attracts the shell 2, so that the fixing effect of the fixture block 51 on the shell 2 is enhanced, and the shell 2 is more stably connected with the base 1;

according to the automobile shell 2, when the shell 2 is close to the bottom of the second groove 4, the magnet 15 sucks the shell 2 to the bottom of the second groove 4, so that the labor intensity of workers is reduced, meanwhile, when an automobile runs, the magnet 15 always sucks the shell 2, the fixing effect of the fixture block 51 on the shell 2 is enhanced, the shell 2 is connected with the base 1 more stably, and the using effect of the automobile shell is improved.

As an embodiment of the invention, a fourth groove 16 and a fifth groove 17 are arranged in the base 1; the number of the fourth grooves 16 and the number of the fifth grooves 17 are two, the two fourth grooves 16 are positioned on two sides of the second groove 4, the two fifth grooves 17 are positioned on two sides of the second groove 4, and the fourth grooves 16 are communicated with the fifth grooves 17; a first block 18 is connected in the fourth groove 16 in a sliding manner; a second block 19 is connected in the fifth groove 17 in a sliding manner; the section of one end, close to the third groove 11, of the first block 18 is trapezoidal, and the section of one end, far away from the third groove 11, of the first block 18 is triangular; the section of one end, close to the fourth groove 16, of the second block 19 is triangular, the second block 19 is attached to the first block 18, and the second block 19 is made of soft materials;

when the device works, a worker puts the shell 2 into the second groove 4, so that the first spring 52 pushes the two clamping blocks 51, the clamping blocks 51 abut against the inclined end face of the first block 18, the first block 18 moves upwards, the first block 18 pushes the second block 19 by means of the inclined face between the first block 18 and the second block 19, and the two second blocks 19 abut against the shell 2 and clamp the shell 2; the fixture block 51 continues to push the first block 18 until the first block 18 is positioned in the fourth groove 16, at the moment, the first block 18 is in contact with the end face of the fixture block 51, and the fixture block 51 supports the first block 18; when a worker presses the L-shaped rod 12, the fixture block 51 retracts into the first groove 5, so that the first block 18 slides towards the bottom of the second groove 4 in the fourth groove 16 until the first block 18 is contacted with the L-shaped rod 12 and returns to the original position;

according to the invention, the first block 18 and the second block 19 are pushed by the fixture block 51, and the second block 19 is abutted against the shell 2, so that the limiting effect on the shell 2 is further enhanced, the shell 2 cannot slide out of the second groove 4 when a vehicle runs on a rugged road, the use performance of the invention is further enhanced, and the practical application effect of the invention is improved.

As an embodiment of the invention, one end of the first block 18 close to the third groove 11 is in contact with the L-shaped rod 12; the L-shaped bar 12 supports a first block 18;

when the clamping device works, the first block 18 is in contact with the L-shaped rod 12 in the initial state, the first block 18 is prevented from slipping from the fourth groove 16 in the initial state, so that the first block 18 cannot be pushed by the fixture block 51 when the shell 2 enters the second groove 4, the second block 19 cannot clamp the shell 2, and the practical application effect of the clamping device is guaranteed.

As an embodiment of the present invention, one end of the L-shaped rod 12 near the latch 51 is semicircular;

when the L-shaped rod 12 is pressed by a worker during working, one end, close to the fixture block 51, of the L-shaped rod 12 extrudes the fixture block 51, one end, close to the fixture block 51, of the L-shaped rod 12 is in the shape of a circular arc, sliding friction force between the L-shaped rod 12 and the surface of the fixture block 51 is reduced, the fixture block 51 is more easily retracted into the first groove 5 by pressing the L-shaped rod 12, the situation that the worker cannot press the L-shaped rod 12 due to small force is avoided, meanwhile, the situation that the L-shaped rod 12 is broken due to the fact that the friction force between the L-shaped rod 12 and the surface of the fixture block 51 is too large, the force for pressing the L-shaped rod 12 is increased by the worker is avoided, the use effect of the L-shaped rod 12 pressing device is guaranteed, and the practicability of the L-shaped rod 51 pressing device is improved.

The specific working process is as follows:

when the clamping device is used, a worker slides one end of the shell 2 into the second groove 4, two ends, far away from each other, of the two clamping blocks 51 are in contact with the base 1, and along with the fact that the shell 2 continues to slide along the second groove 4, the two clamping blocks 51 are extruded by the base 1 into the first groove 5 and slide along the mutually approaching direction until the two clamping blocks 51 completely enter the first groove 5; along with the continuous movement of the shell 2, the shell 2 slides to the bottom of the second groove 4, at the moment, the two fixture blocks 51 stop contacting with the base 1, and the two fixture blocks 51 are separated from each other under the action of the first spring 52, so that the two separated ends of the two fixture blocks 51 are positioned in the corresponding third groove 11, at the moment, the fixture blocks 51 are clamped by the base 1, the shell 2 cannot slip from the second groove 4, and the pedestrian warning device for low-speed vehicle driving is more stably installed; the pedestrian warning device for low-speed running of the vehicle is prevented from being separated from the base 1, and the infrared distance measuring sensor in the pedestrian warning device for low-speed running of the vehicle is damaged along with shaking of the vehicle, so that the infrared distance measuring sensor in the pedestrian warning device for low-speed running of the vehicle cannot scan and measure the distance of the pedestrian normally, and the pedestrian in front of a driver cannot be reminded, and tragic conditions are caused; when a worker needs to take down the shell 2 to overhaul the pedestrian warning device during low-speed running of the vehicle, the two L-shaped rods 12 are pressed, so that the L-shaped rods 12 slide towards the direction close to the fixture blocks 51, the L-shaped rods 12 are in contact with the fixture blocks 51 and press the fixture blocks 51, the two fixture blocks 51 slide close to each other in the first groove 5 until the two fixture blocks 51 are retracted into the first groove 5, the worker pulls the shell 2 at the moment, the shell 2 slides along the second groove 4, two ends, far away from each other, of the two fixture blocks 51 abut against the groove wall of the second groove 4, and the worker stops pressing the L-shaped rods 12 and slides the L-shaped rods 12 at the moment, so that the L-shaped rods 12 return to the original positions; then, the worker continuously pulls the shell 2 until the shell 2 is pulled out of the second groove 4; the whole vehicle low-speed running pedestrian warning device is transversely arranged in an automobile, and the front plate 3 faces the automobile head, so that the vehicle low-speed running pedestrian warning device can conveniently scan pedestrians; in the prior art, the pedestrian warning indicator for low-speed running of the vehicle is arranged on the base 1 of the vehicle, the opening at the upper end is large, and the opening at the lower end is small; in an initial state, one end of the L-shaped rod 12 is not located in the second groove 4, a worker presses the L-shaped rod 12, the L-shaped rod 12 rotates to press the second-size spring 14, and meanwhile one end, close to the fixture block 51, of the L-shaped rod 12 presses the fixture block 51; after the worker releases the L-shaped rod 12, the second spring 14 pushes the L-shaped rod 12 to rotate in the opposite direction until the L-shaped rod 12 returns to the original position, and then the second spring 14 restores to the original state; when the shell 2 is close to the bottom of the second groove 4, the magnet 15 at the bottom of the second groove 4 generates suction to the bottom of the shell 2, and the magnet 15 sucks the shell 2 to the bottom of the second groove 4; when the automobile runs, the magnet 15 always attracts the shell 2, so that the fixing effect of the fixture block 51 on the shell 2 is enhanced, and the shell 2 is more stably connected with the base 1; a worker puts the shell 2 into the second groove 4, so that the first spring 52 pushes the two clamping blocks 51, the clamping blocks 51 abut against the inclined end face of the first block 18, the first block 18 moves upwards, the first block 18 pushes the second block 19 by means of the inclined face between the first block 18 and the second block 19, and the two second blocks 19 abut against the shell 2 and clamp the shell 2; the fixture block 51 continues to push the first block 18 until the first block 18 is positioned in the fourth groove 16, at the moment, the first block 18 is in contact with the end face of the fixture block 51, and the fixture block 51 supports the first block 18; when a worker presses the L-shaped rod 12, the fixture block 51 retracts into the first groove 5, so that the first block 18 slides downwards in the fourth groove 16 until the first block 18 is contacted with the L-shaped rod 12 and returns to the original position; the first block 18 is in contact with the L-shaped rod 12 in the initial state, so that the first block 18 is prevented from slipping from the fourth groove 16 in the initial state, the first block 18 cannot be pushed by the fixture block 51 when the shell 2 enters the second groove 4, the second block 19 cannot clamp the shell 2, and the practical application effect of the invention is ensured; the L-shaped rod 12 is pressed by an operator, one end of the L-shaped rod 12, which is close to the fixture block 51, extrudes the fixture block 51, the shape of the end of the L-shaped rod 12, which is close to the fixture block 51, is arc-shaped, so that the sliding friction force between the L-shaped rod 12 and the surface of the fixture block 51 is reduced, the fixture block 51 is more easily retracted into the first groove 5 by pressing the L-shaped rod 12, the situation that the L-shaped rod 12 is not moved when the operator presses the L-shaped rod 12 due to small strength is prevented, and the situation that the L-shaped rod 12 is broken due to the fact that the friction force between the L-shaped rod 12 and the surface of the fixture block 51 is too large when the operator increases the force for pressing the L-shaped rod 12 is prevented, the use effect of the invention is ensured, and the practicability of the invention is improved.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.