CN219841297U - Tablet personal computer bracket with moderately high configuration - Google Patents

Abstract

The utility model relates to the technical field of accessories of tablet computers, in particular to a tablet computer support with a moderately high configuration, wherein a bearing bottom plate and a placing plate frame rotationally connected with the side wall of the bearing bottom plate are internally provided with clamping assemblies, the clamping assemblies are used for clamping the tablet computer, the mounting assemblies are used for fixedly mounting the support, each mounting assembly comprises an arc-shaped support frame fixedly connected to the top of the bearing bottom plate, the free ends of the arc-shaped support frames are rotationally connected with arc-shaped connecting plates through rotating shafts, the free ends of the arc-shaped connecting plates are fixedly connected with clamping plates, the top of the bearing bottom plate is provided with clamping grooves, the clamping plates are clamped with the clamping grooves, the supporting assemblies are rotationally connected between the bearing bottom plate and the mounting assemblies, and one side of each supporting assembly is in clamping connection with the placing plate frame and used for limiting and supporting the placing plate frame. The utility model effectively solves the problem that only a plane can be placed for use in the prior art, and achieves the purpose of increasing the use scene and suitability.

Description

Tablet personal computer bracket with moderately high configuration

Technical Field

The utility model relates to the technical field of tablet personal computer accessories, in particular to a tablet personal computer bracket with moderately high configuration.

Background

Tablet computers, also called laptops, are small, portable personal computers that use a touch screen as a basic input device, allowing users to work with a stylus or digital pen rather than a conventional keyboard or mouse. The user can realize input through built-in handwriting recognition, a soft keyboard on a screen, voice recognition or a real keyboard (if the machine is equipped), and the user is often required to use the tablet personal computer synchronously with the tablet personal computer support during the use period, so that the placement angle of the tablet personal computer accords with the ergonomics, and then the user can use the tablet personal computer at a proper angle for a long time, and the tablet personal computer is prevented from being directly placed at the lower head of a desktop for use, and the pain feeling is brought to the shoulder, the cervical vertebra and other parts.

Most of the existing tablet computer supports are composed of fixed bearing components and adjusting components, the fixed bearing components can be directly placed on a plane when in use, so that the stability of the gravity center during the use period is guaranteed, the tablet computer can be placed on the adjusting components, and then the placed tablet computer is located at a proper use angle through the rotation adjustment of the adjusting components. For example, the disclosure number is CN216479737U, and the name is a chinese patent of a tablet computer support, which is to adjust the angle of the tablet computer through a screw rod, a hinge shaft, etc., but most of the existing supports are adjusted by being placed on a table top, and people need to use the support in the scenes of a bed, a sofa, etc., and they lack a fixed supporting plane at the side of the scene, then during the use, the support needs to be placed at a soft or uneven position, at this time, the support is limited by the use environment, and cannot be used effectively, and the support and the flat computer are easy to turn on side, which results in injuring the user, so the utility model provides a tablet computer support with moderately high matching level to meet the requirement.

Disclosure of Invention

The utility model aims to provide a tablet personal computer bracket with a moderately high matching degree, solves the problem that only a plane can be placed for use in the prior art, and achieves the purpose of increasing the use scene and suitability.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the tablet personal computer support is provided with a moderately high support bottom plate and a placing plate frame rotationally connected with the side wall of the support bottom plate, wherein a clamping assembly is arranged in the placing plate frame and used for clamping the tablet personal computer;

the mounting assembly is respectively positioned at two opposite sides of the bearing bottom plate and used for fixedly mounting the tablet personal computer bracket, the mounting assembly comprises an arc-shaped supporting frame fixedly connected to the top of the bearing bottom plate, the free end of the arc-shaped supporting frame is rotationally connected with an arc-shaped connecting plate through a rotating shaft, the free end of the arc-shaped connecting plate is fixedly connected with a clamping plate, the top of the bearing bottom plate is provided with a clamping groove, and the clamping plate is clamped with the clamping groove;

the support assembly is rotationally connected between the bearing bottom plate and the installation assembly, one side of the support assembly is connected with the placing plate frame in a clamping mode, and the bearing bottom plate, the placing plate frame and the support assembly form a triangular structure and are used for limiting and supporting the placing plate frame.

Preferably, the support assembly comprises a mounting opening formed in the top of the bearing bottom plate, a connecting shaft is fixedly connected to the mounting opening, a hollow plate is connected to the connecting shaft in a rotating mode, a sliding plate is connected to the hollow plate in a sliding mode, one side of the sliding plate penetrates through two sides of the hollow plate, a first support plate and a second support plate are connected to the free end of the sliding plate in a rotating mode, the first support plate and the second support plate are clamped with a placing plate frame, and four support springs are arranged between the first support plate and the second support plate.

Preferably, a plurality of inserting grooves are formed in the side wall of the placing plate frame, and the first supporting plate and the second supporting plate are inserted into the placing plate frame through the inserting grooves.

Preferably, the clamping assembly comprises a through hole formed in the top of the placing plate frame, a connecting sliding plate is connected to the inside of the through hole in a sliding mode, four compression springs are fixedly connected to the side wall of the connecting sliding plate, the free ends of the compression springs are fixedly connected with the placing plate frame, a lower pressing plate is fixedly connected to the other side wall of the connecting sliding plate, and the lower pressing plate is clamped at the top of the placing plate frame.

Preferably, a rubber pad is arranged on the lower pressing plate, an anti-slip pad and two limiting blocks are arranged on the placing plate frame, and the rubber pad, the anti-slip pad and the two limiting blocks form a concave structure.

Preferably, the top fixedly connected with silica gel board of bearing bottom plate, the silica gel board is located inside arc support frame and the arc connecting plate.

Preferably, the rotating shaft comprises a push rod, a spring and a fixed seat, and the arc-shaped connecting plate can be driven to reset independently.

In summary, the utility model has the technical effects and advantages that:

1. the utility model has reasonable structure, the bearing bottom plate can be placed on a plane for continuous use directly according to specific actual requirements before use by arranging the clamping assembly, or the arc-shaped connecting plate is pushed to rotate towards the inside of the arc-shaped supporting frame under the action of the rotating shaft, so that the clamping plate is driven to fall off the clamping groove, the whole tablet computer bracket can be pulled to carry out splicing operation along objects such as a bed plate and the like needing to be installed, hands can be loosened when the tablet computer bracket is spliced to the maximum position, the rotating shaft drives the arc-shaped connecting plate to reset at the moment, the side wall of the arc-shaped connecting plate forms an pushing force on the objects such as the bed plate, the acting force of the arc-shaped connecting plate and the bearing bottom plate form clamping acting force, the tablet computer bracket is clamped on the objects such as the bed plate and the like for use, the use of the flat computer bracket on the plane such as a table top or the table, the clamping use under the scenes such as a sofa and the like can be met, and the adaptation degree of the tablet computer bracket is increased to a certain extent.

2. According to the utility model, the support assembly is arranged, so that the hollow plate can be pulled to bear force before use and rotated along the connecting shaft under the action of the force, then the positions of the hollow plate and the sliding plate are changed, when the proper position is adjusted, the sliding plate can be adjusted to adjust the distance between the first support plate and the second support plate and the plate frame, the possibility that the support structure is too long or too short is avoided, and then the suitability of the support assembly and the adjustment range of the plate frame are improved. After the length dimension of the supporting component is adjusted, the first supporting plate and the second supporting plate are pulled, so that the first supporting plate and the second supporting plate are respectively inserted into the inserting grooves on the two placing plate frames, the first supporting plate, the second supporting plate and the placing plate frames form a triangular structure, the supporting force of the clamping supporting connecting points of the first supporting plate and the second supporting plate is improved, the possibility that the clamping supporting points of the first supporting plate and the second supporting plate fall off is avoided, and meanwhile the whole supporting structure, the bearing bottom plate and the placing plate frames can form another triangular structure, and the whole supporting performance of the supporting component is improved.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view of a tablet computer stand with a moderately high first view angle;

fig. 2 is a schematic perspective view of a tablet computer stand with a moderately high second view angle;

fig. 3 is a schematic view of a three-dimensional connection structure of a tablet computer stand placement rack with moderate height;

fig. 4 is a schematic view of a three-dimensional connection structure of an arc-shaped connection plate in a tablet computer bracket with moderate height;

fig. 5 is a schematic view of a three-dimensional connection structure of a sliding plate in a tablet computer bracket with a moderately high fit.

Reference numerals:

1. a bearing bottom plate; 2. placing a plate frame; 3. connecting a sliding plate; 4. a compression spring; 5. a lower pressing plate; 6. a rubber pad; 7. a limiting block; 8. an anti-slip pad; 9. an arc-shaped supporting frame; 10. a rotation shaft; 11. an arc-shaped connecting plate; 12. a clamping plate; 13. a clamping groove; 14. a silicone plate; 15. a connecting shaft; 16. a hollow slab; 17. a sliding plate; 18. a first support plate; 19. a second support plate; 20. and a support spring.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the embodiments of the present utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience in describing the embodiments of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present utility model. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In describing embodiments of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present utility model will be understood in detail by those of ordinary skill in the art.

In embodiments of the utility model, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present utility model. In this specification, schematic representations of the above terms are not directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

The technical solution of the utility model is described below in connection with the embodiments shown in fig. 1-5:

the utility model provides a flat computer is placed to bearing bottom plate 1 and rotate and be connected with the grillage 2 of placing of bearing bottom plate 1 lateral wall, the inside of placing grillage 2 is provided with clamping assembly, clamping assembly is used for carrying out the centre gripping with the panel computer, place grillage 2 and installation component and be located the both sides that bearing bottom plate 1 is relative respectively, and installation component is used for carrying out fixed mounting with the panel computer support, installation component includes the arc support frame 9 of fixed connection at bearing bottom plate 1 top, the free end of arc support frame 9 is connected with arc connecting plate 11 through rotation axis 10 rotation, the free end fixedly connected with clamping plate 12 of arc connecting plate 11, clamping groove 13 has been seted up at the top of bearing bottom plate 1, clamping plate 12 and clamping groove 13 mutually block, supporting component rotates to be connected between bearing bottom plate 1 and installation component, one side and placing grillage 2 block of supporting component are connected, and bearing bottom plate 1, place grillage 2 and supporting component form the triangle structure for prescribe support to placing grillage 2.

Can directly place bearing bottom plate 1 in the plane and continue to use according to specific actual demand before the use, perhaps through promoting arc connecting plate 11 for arc connecting plate 11 rotates to the inside of arc support frame 9 under the effect of rotation axis 10, thereby drive clamping plate 12 and drop block groove 13, let the installation component peg graft and loosen the hand on the object such as bed board that needs to be installed, rotation axis 10 will drive arc connecting plate 11 and reset this moment, then make the lateral wall of arc connecting plate 11 will promote the object such as bed board, thereby the effort of arc connecting plate 11 forms the clamping effort with bearing bottom plate 1, can be with the effectual holding of panel computer support use on the object such as bed board.

After the tablet personal computer is fixed, the tablet personal computer can be clamped in the rack 2 through the clamping assembly, so that the stability of the tablet personal computer is guaranteed, the rack 2 is pushed again to rotate under the force of the rack 2, the use angle of the tablet personal computer is adjusted to be proper, and finally the tablet personal computer is supportedThe angle position of the plate frame 2 can be effectively used, the table top can be used on the same plane, or the table top can be clamped in the scenes of being used on a bed, a sofa and the like, and then the adaptation degree of the tablet computer bracket is increased to a certain extent

The supporting component comprises a mounting opening formed in the top of the bearing bottom plate 1, a connecting shaft 15 is fixedly connected to the inside of the mounting opening, a hollow plate 16 is rotationally connected to the connecting shaft 15, a sliding plate 17 is slidingly connected to the inside of the hollow plate 16, one side of the sliding plate 17 penetrates through two sides of the hollow plate 16, the free end of the sliding plate 17 is rotationally connected with a first supporting plate 18 and a second supporting plate 19, the first supporting plate 18 and the second supporting plate 19 are clamped with the placing plate frame 2, and four supporting springs 20 are arranged between the first supporting plate 18 and the second supporting plate 19.

It will be appreciated that: the support assembly is not limited to a specific structure, and may be a support plate, a support frame, an electric push rod, or the like as long as it can support and fix the placement plate frame 2.

The hollow plate 16 can be directly pulled before use to enable the hollow plate 16 to be stressed, the hollow plate can rotate along the connecting shaft 15 under the action of the force, then the position of the hollow plate and the position of the sliding plate 17 are changed, when the hollow plate is adjusted to a proper position, the electric push rod in the hollow plate 16 can be directly opened according to specific requirements to push the sliding plate 17 to push out along the side wall of the hollow plate 16, then the sliding plate 17 penetrates through the side wall of the hollow plate 16, the first supporting plate 18 and the second supporting plate 19 can be effectively spliced with the placing plate frame 2, the possibility that the supporting structure is too long or too short is avoided, the use adaptability of the supporting component is improved, and the adjusting range of the placing plate frame 2 is improved. After the length dimension of the supporting component is adjusted, the first supporting plate 18 and the second supporting plate 19 can be pulled directly to enable the supporting component to bear force and move under the action of the force, so that the supporting spring 20 is driven to bear force to deform, the first supporting plate 18 and the second supporting plate 19 can be respectively inserted into the insertion grooves on the two placing grillages 2, the first supporting plate 18, the second supporting plate 19 and the placing grillages 2 form a triangular structure, the supporting force of the clamping supporting connection points of the first supporting plate 18 and the second supporting plate is improved, the possibility that the clamping supporting points of the first supporting plate fall off is avoided, meanwhile, the whole supporting structure, the bearing bottom plate 1 and the placing grillages 2 can also form another triangular structure, the whole supporting performance of the supporting component is improved, the connecting shaft 15 is a damping rotating shaft and mainly comprises a gasket type rotating shaft, a spring sheet, a long hole gasket, a nut and the like, the torsion value of the rotating shaft is stable, and the rotating shaft can be stopped at will by three hundred sixty degrees during the rotating use period, and the supporting device can be effectively supported during plane use or clamping use.

The side wall of the placing plate frame 2 is provided with a plurality of inserting grooves, and the first supporting plate 18 and the second supporting plate 19 are inserted into the placing plate frame 2 through the inserting grooves.

It will be appreciated that: the insertion structure is not limited to a specific structure, and may be an insertion structure, a magnetic structure, a snap structure, or the like as long as it can support and fix the placement rack 2.

When the rack is used, the rack 2 can be directly pulled to rotate under the force, and when the rack is rotated to a proper position, the hollow plate 16 can be directly pulled to rotate, so that the first support plate 18 and the second support plate 19 connected on the hollow plate 16 are effectively inserted into the insertion groove, thereby supporting the rack 2, keeping the rack 2 stable in the angle position all the time during use, and avoiding the possibility of deflection.

The clamping assembly comprises a through hole formed in the top of the placement plate frame 2, a connecting sliding plate 3 is connected to the inside sliding connection of the through hole, four compression springs 4 are fixedly connected to the side wall of the connecting sliding plate 3, the free ends of the compression springs 4 are fixedly connected with the placement plate frame 2, a lower pressing plate 5 is fixedly connected to the other side wall of the connecting sliding plate 3, and the lower pressing plate 5 is clamped at the top of the placement plate frame 2.

One side of the tablet personal computer can be directly placed in the interior of the placement plate frame 2 before use, thereby the connection sliding plate 3 is directly pulled, the connection sliding plate 3 is stressed to be pulled out along the placement plate frame 2, during the movement of the connection sliding plate 3, the moving force of the connection sliding plate 3 acts on the compression spring 4, the compression spring 4 is stressed to deform and stretch, then an effective space is provided for the movement of the connection sliding plate 3, when the lower pressing plate 5 on one side of the connection sliding plate 3 is placed on the other side of the tablet personal computer, the hand can be loosened, at the moment, the reaction force of the deformation of the compression spring 4 drives the connection sliding plate 3 to reset, so that the lower pressing plate 5 clamps the other side of the tablet personal computer, the position of the tablet personal computer is firmly fixed, the tablet personal computer is kept stable during use, the possibility of sliding down of the tablet personal computer due to the gravity center of the tablet personal computer or other external force is avoided during use, and the use stability and safety of the tablet personal computer are improved to a certain extent.

Be provided with rubber pad 6 on the holding down plate 5, be provided with slipmat 8 and two stopper 7 on placing grillage 2, rubber pad 6, slipmat 8 and two stopper 7 form the concave structure.

It will be appreciated that: the rubber pad 6, the stopper 7 and the anti-slip pad 8 are not limited to a specific structure, and may be a structure such as a silica gel pad, a silica gel plate, a rubber pad, etc., as long as the friction force can be increased.

Can directly place the panel computer between rubber pad 6 and stopper 7 during the use, rubber pad 6 and stopper 7 will fix with the both sides that panel computer is relative this moment, when mutually supporting with slipmat 8, the effectual frictional force of increasing its trilateral contact makes it more stable during the use.

The top of the bearing bottom plate 1 is fixedly connected with a silica gel plate 14, and the silica gel plate 14 is positioned inside the arc-shaped supporting frame 9 and the arc-shaped connecting plate 11.

It will be appreciated that: the silicone plate 14 is not limited to a specific structure, and may be a silicone pad, a silicone plate, a rubber pad, or the like, as long as it can increase the friction between the tablet computer holder and the external connector.

During use, articles such as a plate body which needs to be fixed on the tablet computer support are placed between the bearing bottom plate 1 and the arc-shaped connecting plate 11, so that the silica gel plate 14 is in contact with the articles such as the plate body, at the moment, the friction force between the two articles is effectively increased through the structural material of the silica gel plate 14, the tablet computer support is more stable to install, and the possibility of falling off of the tablet computer support is avoided.

The rotating shaft 10 comprises a push rod, a spring and a fixed seat, and can drive the arc-shaped connecting plate 11 to reset independently.

It will be appreciated that: the rotation shaft 10 is not limited to a specific structure, and may be a structure in which the rotation shaft and the push rod are mutually matched, as long as the arc-shaped connection plate 11 can be automatically driven to reset.

The fixing seat can effectively fix the position of the rotating shaft 10 to keep the rotating shaft stable during use, the ejector rods and the springs are mutually matched, so that when the arc-shaped connecting plate 11 is stressed, the force of the arc-shaped connecting plate can be transmitted to the ejector rods, the ejector rods rotate under the action of the force, then the springs are driven to bear the force, the springs rotate through the rotating shaft 10, the self angle positions of the springs are changed, when the external acting force is eliminated, the rotation force generates a certain torsion, potential energy is stored, and after the external acting force is eliminated, the springs can act on the arc-shaped connecting plate 11 through the ejector rods, so that the arc-shaped connecting plate 11 is reset.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (7)

1. The utility model provides a join in marriage panel computer support that moderately high, is connected with placing grillage (2) of bearing bottom plate (1) lateral wall including bearing bottom plate (1) and rotation, the inside of placing grillage (2) is provided with clamping assembly, clamping assembly is used for carrying out the centre gripping with the panel computer, its characterized in that:

the mounting assembly is positioned on two opposite sides of the bearing bottom plate (1) respectively, and is used for fixedly mounting the tablet personal computer bracket, the mounting assembly comprises an arc-shaped supporting frame (9) fixedly connected to the top of the bearing bottom plate (1), the free end of the arc-shaped supporting frame (9) is rotationally connected with an arc-shaped connecting plate (11) through a rotating shaft (10), the free end of the arc-shaped connecting plate (11) is fixedly connected with a clamping plate (12), a clamping groove (13) is formed in the top of the bearing bottom plate (1), and the clamping plate (12) is clamped with the clamping groove (13);

the support assembly is rotationally connected between the bearing bottom plate (1) and the installation assembly, one side of the support assembly is connected with the placing plate frame (2) in a clamping mode, and the bearing bottom plate (1), the placing plate frame (2) and the support assembly form a triangular structure and are used for limiting and supporting the placing plate frame (2).

2. The tablet personal computer support with moderate height according to claim 1, characterized in that the supporting component comprises a mounting opening formed in the top of the bearing bottom plate (1), a connecting shaft (15) is fixedly connected to the inside of the mounting opening, a hollow plate (16) is rotatably connected to the connecting shaft (15), a sliding plate (17) is slidably connected to the inside of the hollow plate (16), one side of the sliding plate (17) penetrates through two sides of the hollow plate (16), a first supporting plate (18) and a second supporting plate (19) are rotatably connected to the free end of the sliding plate (17), the first supporting plate (18) and the second supporting plate (19) are clamped with the placing plate frame (2), and four supporting springs (20) are arranged between the first supporting plate (18) and the second supporting plate (19).

3. The moderately high tablet computer holder of claim 2, wherein: the side wall of the placing plate frame (2) is provided with a plurality of inserting grooves, and the first supporting plate (18) and the second supporting plate (19) are inserted into the placing plate frame (2) through the inserting grooves.

4. The tablet personal computer support with moderately high matching degree according to claim 1, characterized in that the clamping assembly comprises a through hole formed in the top of the placing plate frame (2), the inside of the through hole is connected with the connecting sliding plate (3) in a sliding mode, the side wall of the connecting sliding plate (3) is fixedly connected with four compression springs (4), the free end of each compression spring (4) is fixedly connected with the placing plate frame (2), the other side wall of the connecting sliding plate (3) is fixedly connected with a lower pressing plate (5), and the lower pressing plate (5) is clamped at the top of the placing plate frame (2).

5. The moderately high tablet computer holder of claim 4, wherein: be provided with rubber pad (6) on holding down plate (5), be provided with slipmat (8) and two stopper (7) on placing grillage (2), rubber pad (6), slipmat (8) and two stopper (7) form concave structure.

6. The moderately high tablet computer holder of claim 5, wherein: the top fixedly connected with silica gel board (14) of bearing bottom plate (1), silica gel board (14) are located inside arc support frame (9) and arc connecting plate (11).

7. The moderately high tablet computer holder of claim 6, wherein: the rotating shaft (10) comprises a push rod, a spring and a fixed seat, and can drive the arc-shaped connecting plate (11) to reset independently.