CN219413239U

CN219413239U - Rotary mechanism

Info

Publication number: CN219413239U
Application number: CN202222568572.2U
Authority: CN
Inventors: 陈树康; 李显奎; 黄贵清
Original assignee: Dongguan City Hele Electronic Co ltd
Current assignee: Dongguan City Hele Electronic Co ltd
Priority date: 2022-09-26
Filing date: 2022-09-26
Publication date: 2023-07-25
Anticipated expiration: 2032-09-26

Abstract

The utility model discloses a rotating mechanism, which comprises a rotating shaft, a clamping plate and a clamping block, wherein the clamping plate and the clamping block are sleeved on the rotating shaft and are mutually overlapped, and the rotating mechanism also comprises a friction plate which is sleeved on the rotating shaft and provides damping for rotation; the rotating shaft is fixed relative to the clamping block, the clamping plate is rotatably sleeved on the rotating shaft, and a limiting part for limiting the rotating angle of the clamping block is arranged on the clamping plate; the clamping plate, the clamping block and the friction plate are sleeved on the rotating shaft in an axial compression mode, and pressure is generated between the friction plate and the clamping plate or the clamping block through axial compression force. The utility model directly adopts the shaft hole to cooperate to realize the rotation of the rotating mechanism, determines the rotation angle through the mutual interference between the clamping plate and the clamping block, provides damping for the rotation through the friction plate, has small volume, simple structure and convenient use, does not influence the passage of the conductive circuit, and can be used in various fine electronic products.

Description

Rotary mechanism

Technical field:

the utility model relates to the technical field of rotating mechanisms, in particular to a rotating mechanism which is small in size and can be used in electronic products.

The background technology is as follows:

in some electronic products, it is often necessary to use a rotating mechanism, but for rotating mechanisms applied in electronic products, it is often necessary to satisfy the following conditions:

1. for some relatively fine electronic products, the technology is developed towards miniaturization, the internal space of the product is effective, and the space for assembling the rotating mechanism is naturally limited, so that the rotating mechanism is required to be small in size and the whole appearance of the electronic product is not affected.

2. The circuit connection of the product is not affected, and conductive circuits are usually arranged between all components in the electronic product, so that the rotating mechanism must not affect the conductive circuit of the product for the electronic product.

In addition, the rotating mechanism of the current electronic product must also have a rotation positioning function, that is, the rotating mechanism can stop at a designated position and stably keep at the current position in the rotation process, and different rotation angles usually correspond to different functions of the electronic product and cannot be positioned by rotation.

Taking this application as an example of earphone manufacturers, in traditional headphones, there is a rotatable ear muff, and this kind of headphones is because of the volume is great, and its rotary mechanism adopts ratchet structure more to reset through the torsional spring, realize rotating, location through the ratchet. However, along with the development of the Bluetooth headset, the volume of the headset is smaller and smaller, a ratchet mechanism cannot be installed in the headset, and the ratchet mechanism is positioned at a fixed point, so that the ratchet can be positioned only when the headset rotates to a specific position, and positioning at any angle cannot be realized. In view of the above, the present inventors have continuously improved and proposed the following technical solutions

The utility model comprises the following steps:

the utility model aims to solve the technical problem of overcoming the defects of the prior art and providing the rotating mechanism which is small in size and can be used in electronic products.

In order to solve the technical problems, the utility model adopts the following technical scheme: a rotary mechanism, comprising: the rotating shaft, the clamping plate and the clamping block which are sleeved on the rotating shaft and are mutually overlapped, and the friction plate which is sleeved on the rotating shaft and provides damping for rotation; the rotating shaft is fixed relative to the clamping block, the clamping plate is rotatably sleeved on the rotating shaft, and a limiting part for limiting the rotating angle of the clamping block is arranged on the clamping plate; the clamping plate, the clamping block and the friction plate are sleeved on the rotating shaft in an axial compression mode, and pressure is generated between the friction plate and the clamping plate or the clamping block through axial compression force.

In the above technical scheme, a shaft hole is formed in the rotating shaft.

Furthermore, in the above technical scheme, the lower end of the rotating shaft is provided with the connecting part, the upper end of the rotating shaft is provided with the stop part, and the clamping plate, the clamping block and the friction plate are axially compressed through the upper limit and the lower limit of the connecting part and the stop part.

In the above technical scheme, further, the connecting portion is provided with a threaded hole for connecting with the outside.

Furthermore, in the above technical scheme, the stop part is a riveting flange formed at the upper end of the rotating shaft, or is a eyelet flange, or is a snap spring mounted at the upper end of the rotating shaft.

Furthermore, in the above technical solution, the cross section of the rotating shaft is a non-standard circle; the clamping plate is provided with a clamping plate hole which is in running fit with the rotating shaft; and a clamping block hole corresponding to the cross section of the rotating shaft is formed in the clamping block.

In the above technical scheme, further, the clamping plate is formed with a bump as a limiting part; the clamping block is provided with a clamping protrusion which is interfered with the limiting part, and the relative rotation angle between the clamping plate and the clamping block is limited through the mutual interference between the limiting part and the clamping protrusion.

In the above technical solution, the two protruding blocks serving as the limiting parts are two, and the clip protrusion is located between the two protruding blocks of the limiting parts.

Furthermore, in the above technical solution, the rotating mechanism further includes an elastic member, and the elastic member is sleeved on the rotating shaft and generates compression tension in the rotating mechanism along the axial direction.

Furthermore, in the above technical scheme, the friction plate is at least provided with one, which is relatively fixed and sleeved on the rotating shaft, and the friction plate is attached to the surface of the clamping plate or the elastic piece which can rotate relatively to the rotating shaft.

By adopting the technical scheme, compared with the prior art, the utility model has the following beneficial effects: the utility model does not adopt a complex ratchet mechanism and a torsion spring reset mechanism in the prior art, but directly adopts shaft hole matching to realize the rotation of the rotating mechanism, the rotation angle is determined through mutual interference between the clamping plates, the friction plate is used for providing damping for the rotation, and the rotating mechanism is ensured to keep relatively stable at any angle in a rotatable range. The device has the advantages of small volume, simple structure and convenient use, does not influence the passage of the conductive circuit, and can be used in various fine electronic products.

Description of the drawings:

FIG. 1 is a perspective view of the present utility model;

FIG. 2 is a perspective view of another view of the present utility model;

FIG. 3 is an exploded perspective view of the present utility model;

FIG. 4 is a front view of the machine of the present utility model;

fig. 5 is a front view of the present utility model after rotation.

The specific embodiment is as follows:

the utility model will be further described with reference to specific examples and figures.

As shown in fig. 1 to 5, the present utility model is a rotary mechanism. The rotation mechanism 3 includes: the device comprises a rotating shaft 31, a clamping plate 32, a clamping block 33, a friction plate 34 and an elastic piece 35. Wherein, the clamping plate 32, the clamping block 33, the friction plate 34 and the elastic piece 35 are all sleeved on the rotating shaft 31. The rotating shaft 31 and the clamping block 33 are relatively fixed, and the clamping plate 32 is rotatably sleeved on the rotating shaft 31, namely the rotating shaft 31 can drive the fast 33 to rotate relative to the clamping plate 32.

The cross section of the rotating shaft 31 is a non-standard circle. In this embodiment, the rotating shaft 31 is in a cylindrical shape with a missing portion, so that a relatively fixed fit between the rotating shaft 31 and the clamping block 33 can be ensured, and a rotatable fit between the rotating shaft 31 and the clamping block 32 can be realized.

The lower end of the rotating shaft 31 is formed with a connecting portion 311, the upper end of the connecting portion is formed with a stop portion 312, and the connecting portion 311 and the stop portion 312 limit up and down to axially compress the clamping plate 32, the clamping block 33 and the friction plate 34. The axial pressing force is used for generating pressure between the friction plate 34 and the clamping plate 32 or the clamping block 33, so that the rotating mechanism can generate enough friction force damping in the rotating process.

The connection portion 311 of the rotation shaft 31 is for fixedly connecting with the outside, such as a housing in an earphone. The connecting portion 311 is provided with a screw hole 3110 for connecting with the outside. The user can fix the rotation shaft 31 to the outside using a screw. The stop part 312 is a riveting flange formed at the upper end of the rotating shaft 31, or is a eyelet flange, or is a snap spring mounted at the upper end of the rotating shaft 31.

In order to pass through the conductive cable, a shaft hole 310 through which the conductive wire passes is formed in the rotating shaft 31. So that the other relative rotation parts are connected by internal circuits.

The clamping plate 32 is a metal plate, and is provided with a positioning hole 322 for fixedly connecting with an external product. The clamping plate 32 can be clamped and fixed in the positioning groove of the external product through the special-shaped shape of the clamping plate 32, and the clamping plate 32 is relatively fixed with the external product through the matching of the positioning pin and the positioning hole 322 on the external product. In addition, the clamping plate 32 is provided with a clamping plate hole 320 which is in rotation fit with the rotating shaft 31, and the clamping plate hole 320 is a round hole which can realize relative rotation after being matched with the rotating shaft 31. Further, a stopper 321 for restricting the rotation of the clamp 33 is provided on the upper surface of the clamp 32.

The clamping block 33 is clamped above the plate 32. The clamping block 33 is sleeved on the rotating shaft 31 and is relatively fixed with the rotating shaft 31, namely, a clamping block hole 330 corresponding to the cross section of the rotating shaft 31 is formed in the clamping block 33, and the clamping block 33 and the rotating shaft 31 are relatively rotated through shaft hole matching between the clamping block hole 330 and the rotating shaft 31.

In addition, the clamping block 33 is formed with a clamping protrusion 331 interfering with the limiting portion 321, and the limiting portion 321 blocks the clamping protrusion 331, so as to limit the rotation angle of the clamping block 33. In this embodiment, the limiting portion 321 is a bump formed on the clamping plate 32, and there are two bumps as the limiting portion 321, and a space between the two bumps is used as a rotation space of the clamping block 33. The relative rotation angle between the clamping plate 32 and the clamping block 33 is limited by the mutual interference between the limiting part 321 and the clamping convex 331. In order to avoid an excessive rotation angle, in this embodiment, the rotation angle is between 30-100 degrees.

The friction plate 34 is made of wear-resistant materials such as plastic, rubber and the like, and is used for providing damping when rotating in the rotating mechanism 3. To enhance friction, the friction plate 34 surface is provided with texturing, or grooves.

The rotating mechanism 3 further comprises an elastic member 35, and the elastic member 35 is sleeved on the rotating shaft 31 and generates compression tension in the rotating mechanism 3 along the axial direction. The elastic member 35 may be a spring or other elastic body, and a small elastic member such as an elastic washer may be used in consideration of limited application space of the present utility model.

In this embodiment, in order to increase the rotation damping, two friction plates 34 are provided, which are sleeved on the rotating shaft 31 relatively and fixedly, and the friction plates 34 are abutted against the surfaces of the clamping plates 32 or the elastic members 35 which can rotate relatively to the rotating shaft 31.

When the rotation mechanism 3 rotates: the ear-hanging part 31, the rotating shaft 31 and the clamping block 33 are relatively fixed, and the movement part 2 and the clamping plate 32 are relatively fixed and can rotate around the rotating shaft 31. Other components, such as the friction plate 34 and the elastic member 35, can be selected according to the need to be fixed relative to the rotating shaft 31, in this embodiment, the friction plate 34 is fixed relative to the rotating shaft 31, and the elastic member 35 rotates relative to the rotating shaft 31, so that in the rotation process of the rotating mechanism 3, the friction plate 34 and the adjacent components can rotate relatively, and friction damping is generated.

In use, as shown in fig. 4 and 5, the rotating shaft 31 is fixedly connected to the first rotating part of the external product, and the clamping plate 32 is fixedly connected to the second rotating part of the external product. When an external force is applied to the first rotating part and the second rotating part of the external product, the first rotating part and the second rotating part generate relative rotation. Due to the friction plate 34 and the elastic member 35, a certain rotation damping is provided between the relatively rotating parts in the rotating mechanism 3. By this damping, the rotation mechanism 3 can be kept relatively stable at any angle within the rotatable range. The utility model has the advantages of simple structure and convenient use.

It is understood that the foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, but rather is to be accorded the full scope of all such modifications and equivalent structures, features and principles as set forth herein.

Claims

1. A rotary mechanism, comprising: rotating shaft (31), and cover establish cardboard (32) and fixture block (33) on rotating shaft (31) and mutual stack, its characterized in that:

the friction plate (34) is sleeved on the rotating shaft (31) and provides damping for rotation;

the rotating shaft (31) is fixed relative to the clamping block (33), the clamping plate (32) is rotatably sleeved on the rotating shaft (31), and the clamping plate (32) is provided with a limiting part (321) for limiting the rotating angle of the clamping block (33);

the clamping plate (32), the clamping block (33) and the friction plate (34) are sleeved on the rotating shaft (31) in an axial compression mode, and pressure is generated between the friction plate (34) and the clamping plate (32) or the clamping block (33) through axial compression force.

2. A rotary mechanism according to claim 1, wherein: the rotating shaft (31) is internally provided with a shaft hole (310).

3. A rotary mechanism according to claim 1, wherein: the lower end of the rotating shaft (31) is provided with a connecting part (311), the upper end of the rotating shaft is provided with a stop part (312), the upper end of the rotating shaft is limited up and down through the connecting part (311) and the stop part (312), and the clamping plate (32), the clamping block (33) and the friction plate (34) are axially compressed.

4. A rotary mechanism according to claim 3, wherein: the connecting part (311) is provided with a threaded hole (3110) for connecting with the outside.

5. A rotary mechanism according to claim 3, wherein: the stop part (312) is a riveting flange formed at the upper end of the rotating shaft (31), or is a eyelet flange or is a clamp spring arranged at the upper end of the rotating shaft (31).

6. A rotary mechanism according to claim 1, wherein: the cross section of the rotating shaft (31) is of a non-standard circular shape; a clamping plate hole (320) which is in rotary fit with the rotating shaft (31) is formed in the clamping plate (32); the clamping block (33) is provided with a clamping block hole (330) corresponding to the cross section of the rotating shaft (31).

7. A rotary mechanism according to claim 1, wherein: the clamping plate (32) is provided with a lug serving as a limiting part (321); the clamping block (33) is provided with a clamping protrusion (331) which is interfered with the limiting part (321), and the relative rotation angle between the clamping plate (32) and the clamping block (33) is limited through the mutual interference between the limiting part (321) and the clamping protrusion (331).

8. A rotary mechanism according to claim 7, wherein: the two protruding blocks serving as the limiting parts (321) are arranged, and the clamping protrusions (331) are located between the two protruding blocks of the limiting parts (321).

9. A rotary mechanism according to any one of claims 1 to 8, wherein: the rotating mechanism (3) further comprises an elastic piece (35), and the elastic piece (35) is sleeved on the rotating shaft (31) and generates compression tension in the rotating mechanism (3) along the axial direction.

10. A rotary mechanism according to claim 9, wherein: the friction plate (34) is at least provided with one, is sleeved on the rotating shaft (31) relatively and fixedly, and the friction plate (34) is attached to the surface of the clamping plate (32) or the elastic piece (35) which can rotate relatively to the rotating shaft (31).