1. The utility model provides an automatic safe coupling who connects, is including inserting adapter sleeve (1) that is equipped with the male plug, its characterized in that: a locking device is arranged in the connecting sleeve (1), a first cavity (11) and a second cavity (12) are sequentially arranged in the connecting sleeve (1) from top to bottom, an inserting hole (21) is formed in one side of the first cavity (11), two limiting holes (23) are symmetrically formed in the left side and the right side of the other side of the first cavity, a notch groove is formed in the cavity bottom of the first cavity (11), a mounting hole (121) is formed in one side of the second cavity (12), a yielding hole (122) is formed in the other side of the second cavity, a guide block (22) is arranged in the second cavity (12) at a position corresponding to the mounting hole (121), and a positioning lug (13) is arranged on one side corresponding to the yielding hole (122); the locking device comprises a push plate (3), a first clamping strip (31) and a second clamping strip (32) which horizontally extend out are arranged at the upper end of the push plate (3), two stop blocks (33) are symmetrically arranged on the two clamping strips, the two stop blocks (33) extend into the limiting holes (23) at the corresponding ends, a first limit block (41) and a second limit block (42) are arranged between the two clamping strips, the lower end of the push plate (3) is provided with a first positioning rod (51) and a second positioning rod (52), the two clamping strips extend into the first cavity (11), the stop block (33) can prevent the locking device from falling off, the two positioning rods and the stop block extend into the second cavity (12), when the male plug is inserted, the corresponding positions on the limiting blocks are attached to the outer side wall of the male plug, and the corresponding positions on the two positioning rods are clamped and positioned with the positioning lugs (13) at the corresponding ends.

2. The automatically connecting safety line joint of claim 1, wherein: a first fixed block (441) and a second fixed block (442) are symmetrically arranged on the left side and the right side of the push plate (3) corresponding to the position between the two clamping strips, a first limiting block (41) horizontally extending out is arranged at the lower end of the first fixed block (441), a second limiting block (42) horizontally extending out is arranged at the lower end of the second fixed block (442), the end surfaces of the extending ends of the two limiting blocks are respectively provided with a section of arc surface, and the two sections of arc surfaces form a semi-arc shape; the lower end faces of the first limiting block (41) and the second limiting block (42) are respectively provided with a section of extension section (55) extending downwards, and each extension section (55) is provided with a section of cambered surface section corresponding to the extending direction of the limiting block; and reinforcing blocks (45) are arranged between the fixed blocks and the limiting blocks at the corresponding ends.

3. The automatically connecting safety line connector of claim 2, wherein: the upper end faces of the two limiting blocks are flush with the upper end faces of the two positioning rods.

4. The automatically connecting safety line connector of claim 2, wherein: the fixed block, the limiting block and the extension section at the corresponding ends are provided with grooves which penetrate up and down, and the grooves at the two ends are symmetrically arranged and surround to form a notch structure; the position department that corresponds the breach structure at the bottom of the chamber of second cavity (12) all is equipped with one and steps down groove (14), two it all communicates with the breach structure to step down groove (14).

5. The automatically connecting safety line joint of claim 1, wherein: the first positioning rod (51) and the second positioning rod (52) horizontally extend out from the lower end of the push plate (3), a bending section (53) is arranged at the extending end of each positioning rod, a bump is arranged on each positioning rod, a transition inclined plane (541) is arranged on the upper end surface of each bump, and the bending section (53), the bump and the corresponding position of the positioning rod at the corresponding end surround to form a clamping groove; the connecting block is arranged in the second cavity (12), the left side and the right side of the connecting block are symmetrically provided with two positioning convex blocks (13), and the clamping grooves at the corresponding ends are clamped and positioned with the positioning convex blocks (13).

6. The automatically connecting safety line joint of claim 5, wherein: every the lateral wall of lug all includes first oblique straight section (542) the highest end of first oblique straight section (542) is connected with oblique straight section of second (543), the least significant end of second oblique straight section (543) is connected with circular arc section (544), and the least significant end of this circular arc section (544) is connected with the corresponding position of the inside wall that corresponds the end locating lever.

Background

At present, the quick connecting device widely applied to automobile fuel and new energy pipeline systems mainly adopts a single locking mechanism, generally, the risk that the pipeline system is leaked due to the fact that the single locking mechanism connecting device is unlocked under the action of external force (vibration, flying stones and the like) in the working process is high, and the single locking mechanism connecting device does not have the functions of automatic locking and mistake prevention in the assembling process, so that the problem that the driving safety is affected due to the fact that the single locking mechanism connecting device is not installed in place is easily caused.

Disclosure of Invention

The invention aims to provide an automatically-connected safety pipe joint which is convenient to disassemble and assemble and is convenient to check the installation state.

The technical scheme of the invention is as follows:

a safety pipe joint capable of being automatically connected comprises a connecting sleeve into which a male plug is inserted, wherein a locking device is arranged in the connecting sleeve, a first cavity and a second cavity are sequentially arranged in the connecting sleeve from top to bottom, an inserting hole is formed in one side in the first cavity, two limiting holes are symmetrically formed in the left side and the right side of the other side of the first cavity, a notch groove is formed in the cavity bottom of the first cavity, a mounting hole is formed in one side of the second cavity, a stepping hole is formed in the other side of the second cavity, a guide block is arranged in the position, corresponding to the mounting hole, in the second cavity, and a positioning lug is arranged on one side, corresponding to the stepping hole; the locking ware includes the push pedal the upper end of push pedal is equipped with first card strip and the second card strip that the level stretches out the symmetry is equipped with two dogs, two on two card strips the dog stretches into the spacing hole that corresponds the end, two be equipped with first stopper and second stopper between the card strip, and the lower extreme of this push pedal is equipped with first locating lever and second locating lever, two in the card strip all stretches into first cavity, the dog can prevent that the locking ware from droing, two locating lever and stopper all stretch into in the second cavity to when the male plug inserts, correspond the position on the stopper and laminate with the lateral wall of male plug, correspond the position on two locating levers and correspond the location joint lug location of end.

By adopting the structure, when the locking device is inserted into the connecting sleeve, the first positioning rod and the second positioning rod are inserted from the mounting hole, then the first limiting block and the second limiting block are also inserted into the second cavity from the mounting hole, the first clamping strip and the second clamping strip are inserted into the first cavity from the insertion hole, and the stop block on the clamping strip extends into the limiting hole at the corresponding end to prevent the locking device from falling off; after the male plug is inserted, the boss on the male plug moves from top to bottom and extrudes corresponding positions on the two positioning rods, the two positioning rods are opened along the same trend, after the male plug is inserted in place, the two positioning rods move back and move along the outer side surface of the male plug at the same time, the corresponding positions on the limiting blocks are attached to the outer side wall of the male plug and the corresponding positions of the boss for limiting, the corresponding positions on the two positioning rods are clamped and positioned with the positioning lugs at the corresponding ends, and the functions of automatic locking and mistake proofing are realized; if the male plug is not installed in place, one condition is that the locking device is loosened when the two positioning rods are in an opening state compared with the initial positions in the two limiting holes, and the other condition is that the boss of the male plug steps over the positions of the positioning rods, but the positioning rods are not clamped in place, the two positioning rods can be seen to be opened outwards from the outside of the connecting sleeve, namely the male plug is loosened, and the positions of the two limiting holes are convenient for checking the installation state; when the male plug is disassembled, the two positioning rods are directly pulled away from the disassembling hole, so that the positioning rods are separated from the positioning lugs, the boss position of the male plug is pulled out of the positioning rods, and finally the two positioning rods are loosened.

In order to improve the stress strength, preferably, a first fixed block and a second fixed block are symmetrically arranged on the left side and the right side of the push plate corresponding to the position between the two clamping strips, a first limiting block horizontally extending out is arranged at the lower end of the first fixed block, a second limiting block horizontally extending out is arranged at the lower end of the second fixed block, the end surfaces of the extending ends of the two limiting blocks are respectively provided with a section of arc surface, and the two sections of arc surfaces form a semi-arc shape; the lower end faces of the first limiting block and the second limiting block are respectively provided with a section of extension section extending downwards, and each extension section is provided with a section of cambered surface section corresponding to the extending direction of the limiting block; and reinforcing blocks are arranged between the fixed blocks and the limiting blocks at the corresponding ends.

In order to improve the installation stability, preferably, the upper end surfaces of the two limiting blocks are flush with the upper end surfaces of the two positioning rods.

In order to better ensure the convenience of disassembly and assembly, as the optimization, the fixed block, the limiting block and the extension section at the corresponding ends are provided with grooves which penetrate up and down, and the grooves at the two ends are symmetrically arranged and form a notch structure in a surrounding manner; the position department that the chamber bottom of first cavity and second cavity corresponds the breach structure all is equipped with one and steps down the groove, two it all communicates with the breach structure to step down the groove.

In order to simplify the structure, preferably, the first positioning rod and the second positioning rod horizontally extend out from the lower end of the push plate, the extending end of each positioning rod is provided with a bending section, each positioning rod is provided with a lug, the upper end surface of each lug is provided with a transition inclined plane, and the bending section, the lug and the corresponding position of the positioning rod at the corresponding end surround to form a clamping groove; the second cavity is internally provided with a connecting block, the connecting block is symmetrically provided with two positioning lugs at the left and right sides, and the clamping groove at the corresponding end is clamped and positioned with the positioning lugs.

In order to realize automatic sliding and locking in place, preferably, the outer side wall of each lug comprises a first inclined straight section, the highest end of the first inclined straight section is connected with a second inclined straight section, the lowest end of the second inclined straight section is connected with an arc section, and the lowest end of the arc section is connected with the corresponding position of the inner side wall of the corresponding end positioning rod.

Has the advantages that: according to the invention, the locking device is inserted into the connecting sleeve, so that the male plug is protected from being fixed, the male plug can be automatically locked, the installation state can be conveniently observed, the situation of installation falling is avoided, the structure is simple, and the assembly and disassembly are convenient.

Drawings

Fig. 1 is an exploded view of the installation of the present invention.

Fig. 2 is a schematic structural diagram of the first cavity.

Fig. 3 is a schematic structural view of the second cavity.

Fig. 4 is a schematic structural view of the locker.

Fig. 5 is a bottom view of fig. 4.

Fig. 6 is a top view of fig. 4.

Fig. 7 is a sectional view taken along line F-F in fig. 6.

Fig. 8 is a schematic view of the installation process of the present invention.

Fig. 9 is a schematic view of the mounting structure of the present invention.

Fig. 10 is a bottom view of fig. 9.

Detailed Description

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

As shown in fig. 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10, the present invention includes a connecting sleeve (1) inserted with a male plug, a locking device is arranged in the connecting sleeve 1, a first cavity 11 and a second cavity 12 are sequentially arranged in the connecting sleeve 1 from top to bottom, an insertion hole 21 is arranged on one side in the first cavity 11, two limit holes 23 are symmetrically arranged on the left and right sides of the middle of the first cavity 11, a notch groove is arranged on the bottom of the first cavity 11,

a mounting hole 121 is formed in one side of the second cavity 12, an abdicating hole 122 is formed in the other side of the second cavity 12, a guide block 22 is arranged in the second cavity 12 at a position corresponding to the mounting hole 121, and a positioning bump 13 is arranged at one side corresponding to the abdicating hole 122;

the locking device comprises a push plate 3, a first clamping strip 31 and a second clamping strip 32 which horizontally extend out are arranged at the upper end of the push plate 3, two stop blocks 33 are symmetrically arranged on the two clamping strips, the two stop blocks 33 extend into the limiting holes 23 of the corresponding ends, and the locking device is prevented from falling off.

A first fixed block 441 and a second fixed block 442 are symmetrically arranged on the push plate 3 at the left and right sides corresponding to the position between the two clamping strips, a first limiting block 41 horizontally extending out is arranged at the lower end of the first fixed block 441, a second limiting block 42 horizontally extending out is arranged at the lower end of the second fixed block 442, the end surfaces of the extending ends of the two limiting blocks are respectively provided with a section of arc surface, and the two sections of arc surfaces form a semi-arc shape; the lower end surfaces of the first limiting block 41 and the second limiting block 42 are respectively provided with a section of extension section 55 extending downwards, and each extension section 55 is provided with a section of cambered surface corresponding to the extending direction of the limiting block; reinforcing blocks 45 are arranged between the fixing blocks and the limiting blocks at the corresponding ends.

The upper end faces of the two limiting blocks are flush with the upper end faces of the two positioning rods.

The fixed block, the limiting block and the extension section at the corresponding ends are provided with grooves which penetrate up and down, and the grooves at the two ends are symmetrically arranged and surround to form a notch structure; the cavity bottom of the first cavity 11 and the second cavity 12 is provided with a yielding groove 14 corresponding to the notch structure, and the yielding grooves 14 are communicated with the notch structure.

The lower end of the push plate 3 is provided with a first positioning rod 51 and a second positioning rod 52 which horizontally extend, the extending end of each positioning rod is provided with a bending section 53, each positioning rod is provided with a lug, the upper end surface of each lug is provided with a transition inclined plane 541, and the corresponding positions of the bending section 53, the lug and the positioning rod at the corresponding end surround to form a clamping groove; and a connecting block is arranged in the second cavity 12, two positioning convex blocks 13 are symmetrically arranged on the left and right sides of the connecting block, and the clamping grooves at the corresponding ends are clamped and positioned with the positioning convex blocks 13.

Every the lateral wall of lug all includes first oblique straight section 542's the highest end is connected with the oblique straight section 543 of second the lowest end of the oblique straight section 543 of second is connected with circular arc section 544, and this circular arc section 544's the lowest end is connected with the corresponding position of the inside wall that corresponds the end locating lever.

The using method of the invention is as follows:

as shown in fig. 1 to 10, when the locking device is inserted into the connecting sleeve 1, the first positioning rod 51 and the second positioning rod 52 are inserted from the position of the mounting hole 121, then the first limiting block 41 and the second limiting block 42 are also inserted into the second cavity 12 from the position of the mounting hole 121, the first clamping strip 31 and the second clamping strip 32 are then inserted into the first cavity 11 from the position of the insertion hole 21, the stoppers 33 on the two clamping strips respectively extend into the limiting holes 23 at the corresponding ends, and the stoppers 33 abut against the hole walls of the limiting holes 23 to prevent the locking device from falling off.

After the male plug is inserted, the boss on the male plug moves from top to bottom and simultaneously extrudes the transition inclined planes 541 on the two lugs, the first positioning rod 51 and the second positioning rod 52 move along and form an opening shape, after the male plug is inserted in place, namely, the boss position of the male plug moves downwards to be away from the transition inclined plane 541 position, the second inclined straight section 543 of the outer side wall of the lug is attached to the outer side wall of the male plug while the two positioning rods move back, and moves along the outer side surface of the male plug, and the clamping groove at the corresponding end of the positioning rod is clamped and fixed with the positioning lug 13, the arc section 544 is attached to the outer side wall of the male plug, simultaneously, first stopper 41 and second stopper 42 move the top of boss, and the circular arc face that two stoppers stretched out the end laminates with the corresponding position of the positive plug lateral wall above the boss, and the cambered surface section on the extension section 55 then laminates with the lateral wall of boss, realizes the function of automatic locking and mistake proofing.

If the male plug is not installed in place, one condition is that when two locating levers are in an open state compared with an initial position in two limiting holes, the locking device is loose, the other condition is that the boss of the male plug steps over the locating lever, but the locating lever and the locating lug 13 are not clamped in place, the two locating levers are outwards opened as seen from the position of the dismounting hole 122 of the connecting sleeve 1, namely, the male plug is loose, the installation state can be conveniently checked at the positions of the two limiting holes 23, and the locking device is prevented from being loosened and sliding off so as to replace the male plug in time.

When the male plug is disassembled, the two positioning rods are directly pulled away from the disassembling hole 122, so that the positioning rods are separated from the positioning lugs 13, the boss positions of the male plug are pulled out of the positioning rod positions, and finally the two positioning rods are loosened.

It should be noted that, as shown in e diagram in fig. 3, fig. 4, fig. 5, fig. 10 and fig. 8, the fixing block, the limiting block and the extension section at the corresponding end are provided with grooves penetrating up and down, the grooves at the two ends are symmetrically arranged and form a notch structure in a surrounding manner, when the pushing plate 3 is pushed in place during installation, the abdicating groove 14 is communicated with the notch structure, if clamping stagnation occurs when the positioning rod is pulled open, a related auxiliary tool can be inserted into the communicated position to assist in pulling the locking device to assist in disassembly, and related parts can be replaced conveniently.

In addition, set up first oblique straight section 542 and help the draw-in groove joint location on the locating lever on the one hand, on the other hand is then with the inclined plane form reduction area of contact to reduce the dismantlement resistance.

In order to ensure the use strength and the elastic requirement of disassembly and assembly, the locking device is integrally formed by injection molding of a nylon 66 material, which is the prior art and is not described in detail herein.

The undescribed parts of the present invention are consistent with the prior art, and are not described herein.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures made by using the contents of the present specification and the drawings can be directly or indirectly applied to other related technical fields, and are within the scope of the present invention.