1. The utility model provides a double-slider formula pivot structure, includes first axle body subassembly (1), second axle body subassembly (2), coupling assembling, first axle body subassembly (1) is connected with second axle body subassembly (2) transmission via coupling assembling, first axle body subassembly (1), second axle body subassembly (2) parallel arrangement, its characterized in that: the connecting assembly is provided with a plurality of connecting plates (31) which are parallel to each other, a first limiting cam (4) which is sleeved on the outer side of the first shaft body assembly (1) respectively, a second limiting cam (5) which is sleeved on the outer side of the second shaft body assembly (2) and a switching type sliding block (6) which is arranged on the connecting plates (31) in a sliding mode are accommodated between every two adjacent connecting plates (31), the first limiting cam (4) is provided with a first base portion (41) and a first convex portion (42) which is connected with the first base portion, the second limiting cam (5) is provided with a second base portion (51) and a second convex portion (52) which is connected with the second base portion (51), and the switching type sliding block (6) is located between the first limiting cam (4) and the second limiting cam (5);

the rotating first shaft body assembly (1) drives the first limiting cam (4) to rotate or the rotating second shaft body assembly (2) drives the second limiting cam (5) to rotate so as to drive the switching type sliding block (6) to abut against the first convex part (42) or the second convex part (52) and stop and lock the first shaft body assembly (1) or the second shaft body assembly (2).

2. The double-slider type rotating shaft structure according to claim 1, wherein: the number of the first limiting cams (4), the number of the second limiting cams (5) and the number of the switching type sliding blocks (6) are two, and the two first limiting cams (4), the two second limiting cams (5) and the two switching type sliding blocks (6) are respectively positioned on two sides of the connecting plate (31); the switching type slide block (6) is provided with a rectangular convex block (61), the connecting plate (31) is provided with a rectangular sliding groove (311), and the rectangular convex block (61) is accommodated in the rectangular sliding groove (311) and slides along the rectangular sliding groove (311).

3. The double-slider type rotating shaft structure according to claim 1, wherein: the switching type sliding block (6) is provided with a concave part (62) matched with the first base part (41) or the second base part (51) and a first inclined blocking part (63) communicated with the concave part (62), the number of the concave part (62) and the first inclined blocking part (63) of each switching type sliding block (6) is two, the concave part and the first inclined blocking part are respectively arranged at two ends, far away from each other, of the switching type sliding block (6), and the first inclined blocking part (63) is abutted against and blocks the first convex part (42) or the second convex part (52) so as to lock the first shaft body assembly (1) or the second shaft body assembly (2).

4. The double-slider type rotating shaft structure according to claim 2, wherein: the size of the first base part (41) on the first limiting cam (4) is larger than that of the first base part (41) on the second limiting cam (4).

5. The double-slider type rotating shaft structure according to claim 1, wherein: a plurality of pits (312) are formed in one side, close to the switching type sliding block (6), of the connecting plate (31), and the pits (312) are arranged in a row along the length direction of the connecting plate (31).

6. The double-slider type rotating shaft structure according to claim 2, wherein: the size of the rectangular convex block (61) is smaller than that of the switching type sliding block (6), the length of the rectangular convex block (61) is smaller than that of the rectangular sliding groove (311), and the minimum distance between the first limiting cam (4) and the second limiting cam (5) is smaller than that of the switching type sliding block (6).

7. The double-slider type rotating shaft structure according to claim 2, wherein: the number of the rectangular convex blocks (61) on the switching type sliding block (6) is two, the two rectangular convex blocks (61) are respectively arranged on the left side and the right side which are far away from each other, and the switching type sliding block (6) is respectively in sliding fit with the two connecting plates (31) through the two rectangular convex blocks (61).

8. The double-slider type rotating shaft structure according to claim 3, wherein: a second inclined blocking part (43) and a second transitional arc part (44) communicated with the second inclined blocking part (43) are arranged at the joint of the first base part (41) and the first convex part (42); the junction of first slope barrier portion (63) and concave part (62) is provided with first transition circular arc portion, first isolation clearance has between first transition circular arc portion and second transition circular arc portion (44), second isolation clearance has between first slope barrier portion (63) and second slope barrier portion (43).

9. The double-slider type rotating shaft structure according to claim 1, wherein: the first shaft body assembly (1) is provided with a plurality of first elastic sheets (11) for adjusting the torsion of the first shaft body assembly and a first adjusting nut (12) for adjusting the stretching amount of the first elastic sheets (11); the second shaft body assembly (2) is provided with a plurality of second elastic sheets (21) for adjusting the torsion of the second shaft body assembly and second adjusting nuts (22) for adjusting the stretching amount of the second elastic sheets (21).

10. The double-slider type rotating shaft structure according to claim 9, wherein: the first shaft body assembly (1) is provided with a first connecting part (13), the first connecting part (13) is far away from the first elastic sheet (11), the first connecting part (13) is non-circular, a first support (14) is arranged on the first connecting part (13), and the first support (13) is used for being fixedly connected with an external display screen; second shaft body subassembly (2) are provided with second connecting portion (23), and second connecting portion (23) are non-circular, and second shell fragment (21) setting is kept away from in second connecting portion (23), and second support (24) are installed on second connecting portion (23), and second support (24) are used for with external base fixed connection.

Background

At present, a spring or a gear is generally adopted for transmission in a rotating shaft structure for a flip product in the prior art, and the spring transmission or the gear transmission causes a plurality of components, is relatively complex in structure and generally needs manual assembly; and because the installation space of the rotating shaft structure is limited, the helical gear is generally adopted for meshing transmission, the helical gear has small size and high processing precision, the processing requirement is high, the processing is difficult, the processing and manufacturing yield is low, and the economic benefit is reduced.

When the upper cover of the rotatory flip product of user, the axis body of fixing above that is rotatory, but because of the effect of power, often can drive the axis body of fixing on flip product base and rotate together, lead to rotating the in-process, the motion relation confusion between two axis bodies, be difficult to guarantee the rotatory order of two axis bodies, cause the flip product at rotatory opening in-process, because rotate the chaotic order and influence the result of use and place the effect, not only need adjust repeatedly, lead to the unable use even along with the increase of live time moreover.

Disclosure of Invention

In order to overcome the defects and shortcomings in the prior art, the invention aims to provide a double-slider type rotating shaft structure, which is characterized in that a switching slider, a first limit cam and a second limit cam are arranged to realize that a first shaft body assembly and a second shaft body assembly smoothly rotate to a preset angle and effectively lock the preset angle, so that the processing and manufacturing yield is obviously improved, the market competitiveness of the double-slider type rotating shaft structure is improved, the economic benefit is increased, and the aim of obtaining larger market share is fulfilled; and can realize that two axis body subassemblies are rotatory according to predetermined order rule to can realize 360 rotations, at rotatory in-process, an axis body subassembly is rotatory to being locked after presetting the angle, and another axis body subassembly begins to rotate, and rotation process is more smooth and easy, has avoided the chaotic and influence the result of use and place the effect of motion relation, has also avoided adjusting the pivot structure repeatedly and has caused life to shorten.

In order to achieve the above purpose, the double-slider type rotating shaft structure of the present invention includes a first shaft body assembly, a second shaft body assembly, and a connecting assembly, wherein the first shaft body assembly is in transmission connection with the second shaft body assembly via the connecting assembly, the first shaft body assembly and the second shaft body assembly are arranged in parallel, the connecting assembly has a plurality of connecting plates parallel to each other, a first limit cam respectively sleeved outside the first shaft body assembly, a second limit cam sleeved outside the second shaft body assembly, and a switching type slider slidably arranged on the connecting plates are accommodated between two adjacent connecting plates, the first limit cam has a first base portion and a first protrusion connected with the first base portion, the second limit cam has a second base portion and a second protrusion connected with the second base portion, and the switching type slider is located between the first limit cam and the second limit cam.

The rotating first shaft body component drives the first limiting cam to rotate or the rotating second shaft body component drives the second limiting cam to rotate so as to drive the switching type sliding block to abut against the first convex part or the second convex part and block and lock the first shaft body component or the second shaft body component.

Furthermore, the number of the first limiting cams, the number of the second limiting cams and the number of the switching type sliding blocks are two, and the two first limiting cams, the two second limiting cams and the two switching type sliding blocks are respectively positioned on two sides of the connecting plate; the switching type sliding block is provided with a rectangular convex block, the connecting plate is provided with a rectangular sliding groove, and the rectangular convex block is contained in the rectangular sliding groove and slides along the rectangular sliding groove.

Furthermore, the switching type sliding block is provided with a concave part matched with the first base part or the second base part and a first inclined blocking part communicated with the concave part, the number of the concave part and the first inclined blocking part of each switching type sliding block is two, the concave part and the first inclined blocking part are respectively arranged at two ends, far away from each other, of the switching type sliding block, and the first inclined blocking part is abutted against and blocks the first convex part or the second convex part so as to lock the first shaft body assembly or the second shaft body assembly.

Further, the size of the first base on the first limit cam is larger than that on the second limit cam.

Furthermore, one side of the connecting plate, which is close to the switching type sliding block, is provided with a plurality of pits, and the pits are arranged in the length direction of the connecting plate.

Further, the size of the rectangular bump is smaller than that of the switching type sliding block, the length of the rectangular bump is smaller than that of the rectangular sliding groove, and the minimum distance between the first limiting cam and the second limiting cam is smaller than that of the switching type sliding block.

Furthermore, the number of the rectangular convex blocks on the switching type sliding block is two, the two rectangular convex blocks are respectively arranged on the left side and the right side which are far away from each other, and the switching type sliding block is respectively in sliding fit with the two connecting plates through the two rectangular convex blocks.

Furthermore, a second inclined blocking part and a second transitional arc part communicated with the second inclined blocking part are arranged at the joint of the first base part and the first convex part; the junction of first slope block portion and concave part is provided with first transition circular arc portion, first isolation clearance has between first transition circular arc portion and the second transition circular arc portion, second isolation clearance has between first slope block portion and the second slope block portion.

Furthermore, the first shaft body assembly is provided with a plurality of first elastic sheets for adjusting the torsion force of the first shaft body assembly and a first adjusting nut for adjusting the stretching amount of the first elastic sheets; the second shaft body assembly is provided with a plurality of second elastic sheets for adjusting the torsion of the second shaft body assembly and second adjusting nuts for adjusting the stretching amount of the second elastic sheets.

Furthermore, the first shaft body assembly is provided with a first connecting part, the first connecting part is arranged far away from the first elastic sheet, the first connecting part is non-circular, the first support is arranged on the first connecting part, and the first support is used for being fixedly connected with an external display screen; the second shaft body assembly is provided with a second connecting portion, the second connecting portion are non-circular, the second connecting portion are far away from the second elastic piece, the second support is arranged on the second connecting portion, and the second support is used for being fixedly connected with an external base.

The invention has the beneficial effects that: the double-slider type rotating shaft structure can realize 360-degree rotation, wherein a preset angle is set to be 360 degrees, the first shaft body assembly and the second shaft body assembly are arranged in parallel in the initial state, firstly, the first shaft body assembly rotates 90 degrees firstly, namely, when the first shaft body assembly rotates freely within 0-90 degrees, the second shaft body assembly is in a locking state, when the first shaft body assembly rotates to 90 degrees, the first base part and the second base part are in a relative state, at the moment, the switching type slider slides to the stop to block the first shaft body assembly, and meanwhile, the second shaft body assembly is released from the switching type slider.

And then the second shaft body assembly rotates 90 degrees relative to the first shaft body assembly, and then rotates 90 degrees, the first shaft body assembly is in a locking state, after the second shaft body assembly rotates 180 degrees relative to the first shaft body assembly, the first base part and the second base part are in opposite positions again, and meanwhile, the first shaft body assembly is released from the switching type slide block.

And finally, the first shaft body assembly rotates 90 degrees relative to the second shaft body assembly, so that the first shaft body assembly and the second shaft body assembly are arranged in parallel again, and the purpose of realizing 360-degree rotation of the double-slider type rotating shaft structure is achieved.

The double-slider type rotating shaft structure is provided with the switching type slider, the first limiting cam and the second limiting cam, so that the first shaft body assembly and the second shaft body assembly can smoothly rotate to a preset angle and can be effectively locked at the preset angle; compared with the existing rotating shaft structure, the switching type sliding block, the first limiting cam and the second limiting cam which are arranged on the double-sliding-block type rotating shaft structure form a rotating unit, the situation that a plurality of helical gears in the prior art are adopted to carry out meshing transmission so as to drive the first shaft body assembly and the second shaft body assembly to rotate is avoided, the processing and manufacturing yield is obviously improved, the market competitiveness of the double-sliding-block type rotating shaft structure is improved, the economic benefit is increased, and the purpose of obtaining larger market share is achieved.

In addition, this double-slider formula pivot structure realizes that two axis body subassemblies are rotatory according to predetermined order rule to can realize 360 rotations, at rotatory in-process, an axis body subassembly is rotatory to being locked after presetting the angle, and another axis body subassembly begins to rotate, and the rotation process is more smooth and easy, has avoided the motion relation confusion and has influenced the result of use and place the effect, has also avoided adjusting the pivot structure repeatedly and has caused life to shorten.

Drawings

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

FIG. 2 is a partial perspective view of the present invention;

FIG. 3 is a schematic perspective view of a connecting plate according to the present invention;

FIG. 4 is a schematic perspective view of the relationship between the first switching slider and the first and second limiting cams, respectively;

FIG. 5 is a schematic perspective view of a second switching slider according to the present invention, showing a relationship between the second switching slider and the second first and second limiting cams, respectively;

FIG. 6 is a schematic structural diagram of the first shaft assembly and the second shaft assembly in a parallel state according to the present invention;

fig. 7 is a schematic structural view of a rotation mode of the present invention.

The reference numerals include:

1-first shaft body component 11-first elastic sheet 12-first adjusting nut

13-first connecting part 14-first support 2-second shaft body component

21-second elastic sheet 22-second adjusting nut 23-second connecting part

24-second support 31-connecting plate 311-rectangular sliding groove

312-pit 4-first limit cam 41-first base

42-first convex part 43-second inclined blocking part 44-second transition circular arc part

5-second limit cam 51-second base 52-second protrusion

6-switching type slide block 61-rectangular convex block 62-concave part

63 — first slanted stop.

Detailed Description

For the understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.

Referring to fig. 1 to 5, the double-slider rotating shaft structure of the present invention includes a first shaft assembly 1, a second shaft assembly 2, and a connecting assembly, wherein the first shaft assembly 1 is in transmission connection with the second shaft assembly 2 via the connecting assembly, the first shaft assembly 1 and the second shaft assembly 2 are arranged in parallel, and both the first shaft assembly 1 and the second shaft assembly 2 are used for being mounted on an external component.

The connecting assembly is provided with a plurality of connecting plates 31 which are parallel to each other, specifically, round holes are respectively arranged at two ends of each connecting plate 31, the two round holes are respectively sleeved at the outer sides of the first shaft body assembly 1 and the second shaft body assembly 2, specifically, a display screen of the notebook computer is opened to drive the first shaft body assembly 1 to rotate relative to the second shaft body assembly 2, and the first shaft body assembly 1 rotates relative to the connecting plates 31 through the round holes in the period.

A first limit cam 4 sleeved outside the first shaft body assembly 1, a second limit cam 5 sleeved outside the second shaft body assembly 2, and a switching type slide block 6 slidably arranged on the connecting plate 31 are accommodated between two adjacent connecting plates 31, the first limit cam 4 is provided with a first base portion 41 and a first convex portion 42 connected with the first base portion, the second limit cam 5 is provided with a second base portion 51 and a second convex portion 52 connected with the second base portion 51, and the switching type slide block 6 is positioned between the first limit cam 4 and the second limit cam 5.

The rotating first shaft assembly 1 drives the first limiting cam 4 to rotate or the rotating second shaft assembly 2 drives the second limiting cam 5 to rotate, so as to drive the switching type sliding block 6 to abut against the first protrusion 42 or the second protrusion 52, and to stop and lock the first shaft assembly 1 or the second shaft assembly 2.

Preferably, the first limiting cam 4 and the second limiting cam 5 are correspondingly disposed at the upper end and the lower end of the switching slider 6, specifically, the switching slider 6 is tangent to the first protrusion 42 on the first limiting cam 4 or the second protrusion 52 on the second limiting cam 5 to realize the rotation of the first limiting cam 4 or the second limiting cam 5, and the switching slider 6 abuts against the first base 41 on the first limiting cam 4 to block and clamp the first protrusion 42 or abuts against the second base 51 on the second limiting cam 5 to block and clamp the second protrusion 52, so as to lock the first shaft assembly 1 or the second shaft assembly 2.

When one shaft body assembly freely rotates relative to the connecting assembly, the switching type sliding block blocks and clamps the convex part of the limiting cam on the other shaft body assembly so that the shaft body assembly cannot rotate to realize the locking of the shaft body assembly; when the display screen of the notebook computer is opened to drive the first shaft body assembly 1 to rotate relative to the connecting assembly, the first limiting cam 4 is driven to rotate, the first convex part 42 is tangent to the switching type slide block 6, during the period, the switching type slide block 6 always abuts against the second base part 51 of the second limiting cam 5 and blocks and clamps the second convex part 52, and at the moment, the second convex part 52 can not rotate due to the blocking force of the switching type slide block 6 and is in a locking state; when the first shaft assembly 1 rotates to the preset angle of the shaft assembly, at this time, the first base portion 41 on the first limit cam 4 and the second base portion 51 on the second limit cam 5 are in the opposite position, and then the second shaft assembly 2 is released and starts to rotate, and the first protrusion 42 is blocked by the switching slider 6, so that the first shaft assembly 1 cannot rotate and is in the locked state.

It should be noted that the switching of the rotation state between the first shaft assembly 1 and the second shaft assembly 2 is that when one of the shaft assemblies rotates to a predetermined angle so that the two bases are opposite to each other, the switching slider 6 does not block any protruding portion, and at this time, the switching slider 6 slides to collide with and block the shaft assembly, that is, the other shaft assembly is released and can enter the rotation state from the locking state, so as to implement a regular rotation sequence.

The double-slider type rotating shaft structure can realize 360-degree rotation, wherein a preset angle is set to be 360 degrees, the first shaft body assembly 1 and the second shaft body assembly 2 are arranged in parallel in the initial state, firstly, the first shaft body assembly 1 rotates 90 degrees, namely, when the first shaft body assembly 1 rotates freely within 0-90 degrees, the second shaft body assembly 2 is in a locking state, when the first shaft body assembly 1 rotates to 90 degrees, the first base part 41 and the second base part 51 are in an opposite state, at the moment, the switching type slider 6 slides to block and clamp the first shaft body assembly 1, and meanwhile, the second shaft body assembly 2 is released from the switching type slider 6.

Then the second shaft body assembly 2 is rotated 90 ° and then 90 ° with respect to the first shaft body assembly 1, during which the first shaft body assembly 1 is in the locked state, and after the second shaft body assembly 2 is rotated 180 ° with respect to the first shaft body assembly 1, the first base portion 41 and the second base portion 51 are in the opposite position again, and at the same time, the first shaft body assembly 1 is released from the switching slider 6.

And finally, the first shaft body assembly 1 rotates 90 degrees relative to the second shaft body assembly 2, so that the first shaft body assembly 1 and the second shaft body assembly 2 are arranged in parallel again, and the purpose of realizing 360-degree rotation of the double-slider type rotating shaft structure is achieved.

The double-slider type rotating shaft structure realizes that the first shaft body assembly 1 and the second shaft body assembly 2 smoothly rotate to a preset angle and effectively lock the preset angle by arranging the switching type slider 6, the first limit cam 4 and the second limit cam 5; compared with the existing rotating shaft structure, the switching type sliding block 6, the first limit cam 4 and the second limit cam 5 which are arranged on the double-sliding-block type rotating shaft structure form a rotating unit, the situation that a plurality of helical gears in the prior art are adopted to carry out meshing transmission so as to drive the first shaft body assembly 1 and the second shaft body assembly 2 to rotate is avoided, the processing and manufacturing yield is obviously improved, the market competitiveness of the double-sliding-block type rotating shaft structure is improved, the economic benefit is increased, and the purpose of obtaining larger market share is achieved.

In addition, this double-slider formula pivot structure realizes that two axis body subassemblies are rotatory according to predetermined order rule to can realize 360 rotations, at rotatory in-process, an axis body subassembly is rotatory to being locked after presetting the angle, and another axis body subassembly begins to rotate, and the rotation process is more smooth and easy, has avoided the motion relation confusion and has influenced the result of use and place the effect, has also avoided adjusting the pivot structure repeatedly and has caused life to shorten.

In this embodiment, the number of the first limiting cams 4, the second limiting cams 5 and the switching type sliding blocks 6 is two, and the two first limiting cams 4, the two second limiting cams 5 and the two switching type sliding blocks 6 are respectively located at two sides of the connecting plate 31; the switching slider 6 has a rectangular projection 61, the connecting plate 31 is provided with a rectangular sliding slot 311, and the rectangular projection 61 is accommodated in the rectangular sliding slot 311 and slides along the rectangular sliding slot 311.

Preferably, a first limit cam 4, a switching type slide block 6, and a second limit cam 5 form a set of rotating units, specifically, the switching type slide block 6 is tangent to the first protrusion 42 on the first limit cam 4 or the second protrusion 52 on the second limit cam 5 to enable the first limit cam 4 or the second limit cam 5 to rotate relative to the switching type slide block 6, and the switching type slide block 6 abuts against the first base 41 on the first limit cam 4 to block the first protrusion 42 or abuts against the second base 51 on the second limit cam 5 to block the second protrusion 52, so as to lock the first shaft assembly 1 or the second shaft assembly 2.

In practical use, the two sets of rotating units are used for realizing smooth rotation of the first shaft body assembly 1 and the second shaft body assembly 2 to a preset angle and effective locking of the preset angle, compared with the existing rotating shaft structure, the two sets of rotating units arranged in the double-slider rotating shaft structure avoid the situation that the first shaft body assembly 1 or the second shaft body assembly 2 is driven to rotate by adopting a mode of meshing transmission of a plurality of helical gears in the prior art, in the practical processing and manufacturing, due to the limitation of the installation space of the rotating shaft structure, the helical gears are small in size and high in precision requirement, namely the plurality of helical gears are high in processing requirement and difficult to process, the manufacturing yield is obviously reduced, the production and manufacturing efficiency is obviously reduced, and the double-slider rotating shaft structure obviously improves the processing and manufacturing yield by arranging two sets of rotating units (consisting of two first limiting cams 4, two switching type sliders 6 and two second limiting cams 5), the market competitiveness of the double-slider type rotating shaft structure is improved, so that the economic benefit is increased, and the aim of obtaining larger market share is fulfilled.

Meanwhile, two sets of rotating units (consisting of two first limit cams 4, two switching type sliding blocks 6 and two second limit cams 5) are arranged to obviously increase the blocking force between the switching type sliding blocks 6 and the first convex parts 42 and the second convex parts 52 respectively so as to effectively lock the first shaft body assembly 1 or the second shaft body assembly 2 at a preset angle, so that the phenomenon that the preset angle is not locked stably is avoided, and the experience of a user is obviously improved.

Preferably, the rectangular sliding slot 311 is formed on the connecting plate 31 to limit the switching slider 6 to slide back and forth only between the first shaft body assembly 1 and the second shaft body assembly 2, so as to limit the motion relationship between the first shaft body assembly 1 and the second shaft body assembly 2.

In addition, the rectangular protrusion 61 is matched with the rectangular sliding slot 311 to realize surface contact sliding, so that the lateral deviation of the switching type sliding block 6 caused by the existence of a large contact gap is avoided, and the stability and smoothness of the movement of the switching type sliding block 6 between the first shaft body assembly 1 and the second shaft body assembly 2 are ensured; meanwhile, the switching type sliding block 6 is prevented from rotating in the working process due to the fact that the switching type sliding block 6 with other shapes is arranged, the switching type sliding block 6 cannot be blocked and clamped with the corresponding convex part, and therefore locking of a certain shaft body assembly cannot be achieved, namely the preset angle cannot be effectively fixed.

It should be noted that when the first shaft body assembly 1 is rotated to 90 ° relative to the second shaft body assembly 2, the first base portion 41 and the second base portion 51 on one set of the rotating units are in opposite positions; when the second shaft body assembly 2 rotates to 180 ° with respect to the first shaft body assembly 1 (after the first shaft body assembly 1 rotates 90 °), the first base portion 41 and the second base portion 51 on the two sets of rotating units are in opposite positions.

In this embodiment, the switching slider 6 is configured with a concave portion 62 matching with the first base portion 41 or the second base portion 51 and a first inclined blocking portion 63 communicating with the concave portion 62, preferably, the size of the concave portion 62 is smaller than the smallest base portion of the first base portion 41 and the second base portion 51 so as to better block and block the first convex portion 42 or the second convex portion 52, the number of the concave portion 62 and the first inclined blocking portion 63 of each switching slider 6 is two and are respectively disposed at two ends of the switching slider 6 far away from each other, and the first inclined blocking portion 63 interferes and blocks the first convex portion 42 or the second convex portion 52 so as to lock the first shaft assembly 1 or the second shaft assembly 2.

In this embodiment, the size of the first base portion 41 on the first limiting cam 4 is larger than the size of the first base portion 41 on the second limiting cam 4, and it should be noted that, during the rotation of the first shaft assembly 1, the first base portion 41 on the first limiting cam 4 slides along the concave portion 62 on the first switching slider 6, and during this period, the first base portion 41 slides from one end to the other end, so as to realize the 90 ° rotation of the first shaft assembly 1.

Preferably, the number of the second base parts 51 on the second limiting cam 5 is two, and the two second base parts 51 are arranged in a mirror image manner.

In this embodiment, a plurality of concave pits 312 are formed in one side of the connecting plate 31 close to the switching slider 6, and the concave pits 312 are arranged in a row along the length direction of the connecting plate 31, and preferably, the friction rotational contact between the switching slider 6, the first limit cam 4, and the second limit cam 5 and the concave pits 312 is increased to increase the friction rotational contact between the switching slider 6 and the connecting plate 31, between the first limit cam 4 and the connecting plate 31, and between the second limit cam 5 and the connecting plate 31, so as to prevent the rotation angle of the first shaft assembly 1 or the second shaft assembly 2 from being larger than a preset angle, and to ensure that the rotation angle accuracy of the first shaft assembly 1 and the second shaft assembly 2 is maintained well.

In this embodiment, the size of the rectangular protrusion 61 is smaller than that of the switching slider 6, preferably, the size of the rectangular protrusion 61 is smaller than that of the switching slider 6, so as to avoid interference with other parts, and therefore, the rectangular protrusion 61 has a length smaller than that of the rectangular sliding slot 311, and the minimum distance between the first limiting cam 4 and the second limiting cam 5 is smaller than that of the switching slider 6.

In this embodiment, the number of the rectangular protrusions 61 on the switching slider 6 is two, the two rectangular protrusions 61 are respectively disposed on the left and right sides away from each other, and the switching slider 6 is respectively in sliding fit with the two connecting plates 31 via the two rectangular protrusions 61.

As shown in fig. 6, a second oblique blocking portion 43 and a second transitional arc portion 44 communicated with the second oblique blocking portion 43 are disposed at a connection position of the first base portion 41 and the first protrusion 42; the junction of the first inclined blocking portion 63 and the concave portion 62 is provided with a first transition arc portion, a first isolation gap is arranged between the first transition arc portion and the second transition arc portion 44, and a second isolation gap is arranged between the first inclined blocking portion 63 and the second inclined blocking portion 43.

Specifically, a third oblique blocking portion and a third transitional arc portion communicated with the third oblique blocking portion are also arranged at the joint of the second base portion 51 and the second convex portion 52, a third isolation gap is formed between the first transitional arc portion and the third transitional arc portion, and a fourth isolation gap is formed between the first oblique blocking portion 63 and the third oblique blocking portion.

Referring to fig. 1, the first shaft assembly 1 is provided with a plurality of first elastic pieces 11 for adjusting the torsion thereof and a first adjusting nut 12 for adjusting the extension amount of the plurality of first elastic pieces 11; the second shaft body assembly 2 is provided with a plurality of second elastic sheets 21 for adjusting the torsion thereof and a second adjusting nut 22 for adjusting the extension amount of the plurality of second elastic sheets 21. Preferably, the torsion area of the double-slider type rotating shaft structure realizes the adjustment of the torsion of the first shaft body assembly 1 and the adjustment of the torsion of the second shaft body assembly 2 by arranging the first elastic sheet 11 and the second elastic sheet 21 and adjusting the torsion of the first adjusting nut 12 and the second adjusting nut 22.

Specifically, the size of the stretching amount of the first elastic sheet 11 is controlled by controlling the locking force of the first adjusting nut 12, so as to adjust different torsion forces of the first shaft assembly 1; the size of the stretching amount of the second elastic sheet 21 is controlled by controlling the locking force of the second adjusting nut 22, so as to adjust different torsion forces of the second shaft body assembly 2.

In this embodiment, the first shaft assembly 1 is provided with a first connecting portion 13, the first connecting portion 13 is disposed away from the first elastic sheet 11, the first connecting portion 13 is non-circular, the first bracket 14 is mounted on the first connecting portion 13, and the first bracket 13 is used for being fixedly connected with an external display screen; the second shaft body assembly 2 is provided with a second connecting portion 23, the second connecting portion 23 is non-circular, the second connecting portion 23 is far away from the second elastic sheet 21, the second support 24 is arranged on the second connecting portion 23, and the second support 24 is used for being fixedly connected with an external base.

The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.