CN220015929U - Damping device and electronic equipment - Google Patents

Abstract

The utility model provides a damping device and electronic equipment, the damping device includes: a first movable member and a base. The first movable part comprises a first damping part, and the cross section of the first damping part comprises a first arc edge. The base comprises first gel, the base is arranged corresponding to the first movable part, one end of the first damping part is inserted into the first gel, the first movable part is configured to drive the first damping part to move along the radial direction of the first damping part relative to the first gel, and the first circular arc edge faces the movement direction of the first damping part. The utility model solves the problem that the damping pin is not easy to keep the adhesion state with the gel.

Description

Damping device and electronic equipment

Technical Field

The present utility model relates to dampers, and more particularly, to a damper device and an electronic apparatus.

Background

The micro-motion mechanism (such as a voice coil motor) may generate unnecessary motion when being externally excited or disturbed (such as dithered) during operation. In order to reduce the influence of external disturbance on the micro-motion mechanism, a damper may be provided in the micro-motion mechanism to reduce the frequency response of the micro-motion mechanism to the external disturbance.

For example, the damper may be composed of a damper pin and a gel, and the damper pin is allowed to stroke in the gel while maintaining a state of adhesion with the gel, so as to reduce the frequency response of the micro-motion mechanism to external disturbance. However, since the cross section of the existing damping pin is square, sharp corners exist around the circumference. The sharp corners may break the gel when the damper pin is scratched, and after the gel is broken, the adhesive force of the damper pin may be lowered, so that the damper pin and the gel may not be easily maintained in an adhered state. Therefore, the conventional damper pin has a problem that the adhesion of the gel is not easy.

Disclosure of Invention

An object of the present utility model is to provide a damper device for allowing a damper pin and a gel to easily maintain a bonded state, which is applied to a voice coil motor, the damper device comprising: a first movable member and a base. The first movable part comprises a first damping portion, and the cross section of the first damping portion comprises a first circular arc edge. The base comprises first gel, the base is arranged corresponding to the first movable part, one end of the first damping part is inserted into the first gel, the first movable part is configured to drive the first damping part to move relative to the first gel along the radial direction of the first damping part, and the first circular arc edge faces the moving direction of the first damping part.

Preferably, the cross section of the first damping part further comprises a first straight edge, and the first straight edge is connected with the first circular arc edge.

Preferably, the number of the first straight edges is four, the number of the first circular arc edges is four, and the four first straight edges and the four first circular arc edges are alternately and sequentially connected to form the cross section of the first damping portion.

Preferably, the cross section of the first damping portion defines a first inscribed circle, the perimeter of the first inscribed circle being smaller than the perimeter of the cross section of the first damping portion, the first inscribed circle being tangential to the four first straight edges.

Preferably, the first damping portion further includes an arc end, the arc end is located at an axial end of the first damping portion and is inserted into the first gel, and the arc end faces the axial direction of the first damping portion.

Preferably, the damping device further comprises: a frame and a second movable member. The frame comprises a second damping portion, and the cross section of the second damping portion comprises a second arc edge. The second movable part comprises second gel, the second movable part is arranged corresponding to the frame, one end of the second damping part is inserted into the second gel, the second movable part is configured to drive the second gel to move relative to the second damping part along the axial direction of the second damping part, and the second circular arc edge faces the movement direction of the first damping part.

Preferably, the cross section of the second damping part further comprises a second straight edge, and the second straight edge is connected with the second circular arc edge.

Preferably, the number of the second straight edges is four, the number of the second circular arc edges is four, and the four second straight edges and the four second circular arc edges are alternately and sequentially connected to form the cross section of the second damping portion.

Preferably, the cross section of the second damping portion defines a second inscribed circle, the perimeter of the second inscribed circle being smaller than the perimeter of the cross section of the second damping portion, the second inscribed circle being tangent to the four second straight edges.

Preferably, the frame further comprises a frame body and a second fixing frame, the frame body is sleeved on the second movable part, the frame body is connected with the second fixing frame, and the second fixing frame is connected with the other end of the second damping portion.

Preferably, the number of the second damping parts is two, and the second fixing frame is arranged between the two second damping parts.

Preferably, the number of the second fixing frames is two, and the two second fixing frames are respectively arranged at two side parts of the frame body.

The utility model also provides electronic equipment, which comprises the damping device.

The utility model has the beneficial effects that: the first movable part is provided with a first damping part, and the cross section of the first damping part is provided with a first arc edge. The base is provided with first gel, the base is arranged corresponding to the first movable part, one end of the first damping part is inserted into the first gel, the first movable part is configured to drive the first damping part to move along the radial direction of the first damping part relative to the first gel, and the first circular arc edge (the first circular arc edge is circular arc-shaped when seen from the cross section of the first damping part, and the first circular arc edge forms a circular arc surface when seen from the whole of the first damping part) faces the moving direction of the first damping part. Therefore, when the first damping part moves in the first gel, the first arc edge does not have sharp corners, and the first damping part and the first gel can not be damaged when the first arc edge is propped against the first gel, so that the first damping part and the first gel can be easily kept in a bonding state.

The foregoing description is only an overview of the technical solution of the present utility model, and in order to make the technical means of the present utility model more clearly understood, the present utility model can be implemented according to the content of the specification, and the following detailed description of the preferred embodiments of the present utility model will be given with reference to the accompanying drawings.

Drawings

FIG. 1 is an exploded view of a damping device in an embodiment of the present utility model;

FIG. 2 is an enlarged view of FIG. 1 in the direction A according to an embodiment of the present utility model;

FIG. 3 is a partial cross-sectional view taken along line B-B of FIG. 1 (only the first damping portion is cut and the direction of the line B-B is radial to the first damping portion) in an embodiment of the present utility model;

FIG. 4 is a partial cross-sectional view of the first mount, first damping portion and first gel (only the first gel is cut away) in an embodiment of the utility model;

FIG. 5 is a perspective view of a first movable element in an embodiment of the utility model;

FIG. 6 is a cross-sectional view of a damping device in an embodiment of the present utility model;

FIG. 7 is an exploded view of a first movable member and a base in an embodiment of the utility model;

FIG. 8 is an exploded view of a second movable member and a frame in an embodiment of the utility model;

FIG. 9 is a partial cross-sectional view taken along line C-C of FIG. 8 (only the second damping portion being cut and the direction of the line C-C being taken along the radial direction of the second damping portion) in accordance with an embodiment of the present utility model;

fig. 10 is a block diagram of an electronic device in another embodiment of the utility model.

Wherein, the reference numerals:

1 damping device

2. First movable part

20. First damping part

200. First circular arc edge

201. First inscribed circle

202 first straight edge

203. Arc end

21. Flat plate

210 45 degree inverted right angle

22. Boss

23. Movable body

24. First fixing frame

240. Trapezoid board

241. First straight bar

3. Base seat

30. First gel

31. Square through hole

32. First damping groove

4. Frame

40. Second damping part

400. Second circular arc edge

401. Second inscribed circle

402. Second straight edge

41. Frame body

410. Polygonal through hole

42. Second fixing frame

420. Square plate

421. Second straight rod

5. Second movable part

50. Second gel

51. Second damping groove

6. Shell body

7 electronic device

Detailed Description

Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present utility model, which is described in the following specific examples.

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments. In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only 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, shall fall within the scope of the utility model.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

It should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the mechanical connection and the electrical connection can be adopted; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1 and 2, in one embodiment, a damping device 1 applied to a Voice Coil Motor (VCM for short) is provided, including: a first movable part 2 and a base 3. The first movable part 2 comprises a first damping portion 20, the cross section of the first damping portion 20 comprising a first circular arc edge 200. The base 3 includes a first gel 30, the base 3 is disposed corresponding to the first movable component 2, one end of the first damping portion 20 is inserted into the first gel 30, the first movable component 2 is configured to drive the first damping portion 20 to move relative to the first gel 30 along a radial direction of the first damping portion 20, and the first circular arc edge 200 faces a moving direction of the first damping portion 20.

For convenience of explanation, a space rectangular coordinate system O-xyz may be disposed on the base 3, with the origin of the rectangular coordinate system located at the center of the base 3, the X axis of the rectangular coordinate system parallel to the side of the base 3 with smaller area, the Y axis of the rectangular coordinate system parallel to the side of the base 3 with larger area, and the Z axis of the rectangular coordinate system perpendicular to the top and bottom surfaces of the base 3.

As shown in fig. 3, it is preferable that the cross section of the first damping portion 20 defines a first inscribed circle 201 (the first inscribed circle 201 is indicated by a circle formed by a chain line in fig. 3), and the circumference of the first inscribed circle 201 is smaller than the circumference of the cross section of the first damping portion 20. The first inscribed circle 201 may be a circle of a maximum area that the cross section of the first damping portion 20 can be formed by rounding. The circumference of the first inscribed circle 201 being smaller than the circumference of the cross section of the first damping part 20 may prevent the first damping part 20 from being excessively rounded, i.e., prevent the circumference of the first inscribed circle 201 from being equal to or greater than the circumference of the cross section of the first damping part 20. Because if the circumference of the first inscribed circle 201 is equal to or greater than the circumference of the cross section of the first damping portion 20, although the sharp corners of the first damping portion 20 have been removed by rounding, the first damping portion 20 is prevented from breaking the first gel 30 (refer to fig. 2 for the first gel 30, and the same applies hereinafter), but at the same time, the circumference of the cross section of the first damping portion 20 is also caused to be too small (the circumference of the cross section of the first damping portion 20 is caused to be too small, as seen from the entirety of the first damping portion 20, the side surface area of the first damping portion 20 is caused to be too small, that is, the side area of the first damping portion 20 for abutting against the first gel 30 is caused to be too small), and thus the blocking force generated by the first damping portion 20 in the first gel 30 is reduced, so that the first movable part 2 (refer to fig. 1 for the first movable part 2) needs to increase the blocking force by means of other elastic elements (refer to fig. 1 for example, by means of a spring connection) to make the structure of the damping device 1 (refer to fig. 1) more complicated.

As shown in fig. 3, the cross section of the first damping portion 20 preferably further includes a first straight edge 202, and the first straight edge 202 is connected to the first circular arc edge 200. The first rounded edge 200 may be oriented parallel to the X-axis or the Y-axis. The first rounded edge 200 may protrude outward, for example, in a direction parallel to the X-axis or the Y-axis. The number of the first straight edges 202 is four, the number of the first circular arc edges 200 is four, and the four first straight edges 202 and the four first circular arc edges 200 are alternately and sequentially connected to form the cross section of the first damping portion 20. The first straight edge 202 is a line segment as seen in cross section of the first damping portion 20, and the first straight edge 202 forms a plane as seen in the entirety of the first damping portion 20. For example, two of the four first straight edges 202 may be parallel to each other, and the remaining two of the four first straight edges 202 may be parallel to each other. The lengths of the four first circular arc sides 200 may be the same, and both ends of each first circular arc side 200 may be connected to one first straight side 202. The first inscribed circle 201 may be tangential to the four first straight edges 202 at the same time. The center of the first inscribed circle 201 may coincide with the center of the cross section of the first damping part 20.

As shown in fig. 4, the first damping portion 20 further includes a circular arc end 203, the circular arc end 203 is located at an axial end of the first damping portion 20 and is inserted into the first gel 30, and the circular arc end 203 faces the axial direction of the first damping portion 20. For example, the arc end 203 may be located at the bottom end of the first damping portion 20 and protrude downward in a hemispherical arc shape, so that the sharp corner of the end of the first damping portion 20 may be prevented from cracking the first gel 30 when the first damping portion 20 moves, compared to the case where the end of the first damping portion 20 is not provided with the arc surface.

As shown in fig. 5, the first movable part 2 may include a flat plate 21 and a boss 22, the boss 22 may be disposed at the center of the flat plate 21, and the boss 22 and the flat plate 21 may be integrally formed. For example, the boss 22 may be provided at the center of the lower surface of the flat plate 21. The first damping portion 20 may have a column shape, and the first damping portion 20 may be disposed perpendicular to the flat plate 21. The first circular arc edge 200 (refer to fig. 3, and the same applies below) may be a rounded corner of the cross section of the first damping portion 20, for example, the first circular arc edge 200 may be a rounded corner on the cross section of the conventional square damping pin. Since the first circular arc 200 has a circular arc shape in the cross section of the first damper portion 20, the first circular arc 200 may have a cylindrical shape as viewed from the entirety of the first damper portion 20.

Referring to fig. 6 and 7, the base 3 may be rectangular, a square through hole 31 is provided in the middle of the base 3, and the boss 22 may be embedded in the square through hole 31. The first damping groove 32 may be provided at each of four corners of the base 3, and the first gel 30 may be provided in the first damping groove 32.

Referring to fig. 6 and 7, the first damping portion 20 may be disposed parallel to the Z-axis. The first movable member 2 (the first movable member 2 is referred to in fig. 1, and the same applies hereinafter) and the base 3 may be disposed at intervals, for example, the flat plate 21 may be disposed in parallel with the top surface or the bottom surface of the base 3. The first movable component 2 may be provided with a first magnet, the base 3 is provided with a first coil with an iron core, and the first magnet is attracted or repelled by using a magnetic force generated after the first coil is electrified, so that the first magnet pushes the first movable component 2 to move relative to the base 3 along a radial direction of the first damping portion 20, for example, the first coil pushes the first movable component 2 to move relative to the base 3 along a direction parallel to the X axis or a direction parallel to the Y axis, so that the first damping portion 20 moves relative to the first gel 30 along a direction parallel to the X axis or a direction parallel to the Y axis. The first damping portion 20 may be made of a metal material, for example, steel or an aluminum alloy.

As shown in fig. 7, the first gel 30 may be semi-solid, and one end of the first damping part 20 may move in the first gel 30. The cross section of the first damping portion 20 may be parallel to the plane XoY. The number of the first gels 30 may be the same as the number of the first damping portions 20, so that each first gel 30 may independently act on the corresponding first damping portion 20, thereby avoiding simultaneous failure of each first damping portion 20 or each first gel 30 and improving reliability of the damping device 1 (please refer to fig. 1 for the damping device 1).

The first movable member 2 is provided with a first damper portion 20, and a first arcuate edge 200 is provided in a cross section of the first damper portion 20. The first gel 30 is disposed on the base 3, the base 3 is disposed corresponding to the first movable component 2, one end of the first damping portion 20 is inserted into the first gel 30, the first movable component 2 drives the first damping portion 20 to move along the radial direction of the first damping portion 20 relative to the first gel 30, and the first circular arc edge 200 (the first circular arc edge 200 is circular arc-shaped when viewed from the cross section of the first damping portion 20, the first circular arc edge 200 forms a cylindrical shape when viewed from the whole of the first damping portion 20) faces the moving direction of the first damping portion 20. Therefore, when the first damping portion 20 moves in the first gel 30, the first circular arc edge 200 does not have sharp corners, and the first gel 30 is not damaged when it abuts against the first gel 30, so that the first damping portion 20 and the first gel 30 can be easily kept in a bonded state.

As shown in fig. 7, preferably, the first movable part 2 (please refer to fig. 5 for the first movable part 2) further includes a movable body 23 and a first fixing frame 24, the movable body 23 is connected with the first fixing frame 24, the bottom of the movable body 23 is embedded in the base 3, and the first fixing frame 24 is connected with the other end of the first damping portion 20. The movable body 23 may include a flat plate 21 and a boss 22, and the boss 22 may be embedded in the square through hole 31 of the base 3. The movable body 23 and the first fixing frame 24 may be connected by cementing or screwing. The number of the first fixing frames 24 may be four, and the four first fixing frames 24 are spaced apart from each other. A first fixing frame 24 is provided at each of four right angles of the flat plate 21. The two first fixing frames 24 on one narrow side of the movable body 23 and the two first fixing frames 24 on the other narrow side of the movable body 23 may be symmetrically disposed about the XoZ plane. Similarly, the two first fixing frames 24 on one wide side of the movable body 23 and the two first fixing frames 24 on the other wide side of the movable body 23 may be symmetrically disposed about the YoZ plane. Each right angle of the flat plate 21 may be provided with a 45 deg. chamfer 210. Each of the first fixing frames 24 may be provided with a first damping portion 20. The first damping portion 20 may be disposed perpendicular to the movable body 23. The first fixing frame 24 may be integrally formed with the first damping portion 20. Each first fixing frame 24 may include a trapezoidal plate 240 and a first straight bar 241, an upper bottom edge of the trapezoidal plate 240 may be flush with the 45 ° inverted right angle 210, the first straight bar 241 may be perpendicular to the upper bottom edge of the trapezoidal plate 240 and located at a midpoint position of the upper bottom edge of the trapezoidal plate 240, and the first straight bar 241 may be disposed perpendicular to the first damping portion 20. Trapezoidal plate 240 may be secured to the upper surface of plate 21.

As shown in fig. 8, preferably, the damping device 1 (refer to fig. 1 for the damping device 1) further includes: a frame 4 and a second movable part 5. The frame 4 includes a second damping portion 40, and a cross section of the second damping portion 40 includes a second circular arc edge 400 (the second circular arc edge 400 refers to fig. 9, and the following description). The second movable component 5 includes a second gel 50, the second movable component 5 is disposed corresponding to the frame 4, one end of the second damping portion 40 is inserted into the second gel 50, the second movable component 5 is configured to drive the second gel 50 to move along the axial direction of the second damping portion 40 relative to the second damping portion 40, and the second circular arc edge 400 faces the moving direction of the first damping portion 20. The first movable member 2 (refer to fig. 1 for the first movable member 2) and the second movable member 5 may be covered by the housing 6 (refer to fig. 6 for the housing 6) after being assembled. In some embodiments, the second damping portion 40 may also include a rounded end, which may be located at an axial end of the second damping portion 40 and inserted into the second gel 50, the rounded end facing the axial direction of the second damping portion 40. For example, the rounded end may be located at the bottom end of the second damping portion 40. For a specific structure of the circular arc end of the second damping portion 40, reference may be made to the circular arc end 203 of the first damping portion 20 as shown in fig. 4.

As shown in fig. 8, a second damping groove 51 may be provided in the second movable part 5, and the second gel 50 may be provided in the second damping groove 51. A second coil with an iron core may be provided on the frame 4, and a second magnet may be provided on the second movable member 5, and the second magnet may be pushed by the second coil after being energized, so that the second magnet pushes the second movable member 5 to move relative to the frame 4 in the axial direction of the second damping portion 40. For example, the second coil after being energized may push the second magnet to move along a direction parallel to the Z axis, and the second magnet may push the second movable component 5 to move along a direction parallel to the Z axis, so that the second movable component 5 drives the second gel 50 to move relative to the second damping portion 40 along a direction parallel to the Z axis. The second gel 50 may be semi-solid, and one end of the second damping part 40 may move in the second gel 50.

As shown in fig. 8, preferably, the frame 4 further includes a frame body 41 and a second fixing frame 42, the frame body 41 is sleeved on the second movable component 5, the frame body 41 is connected with the second fixing frame 42, and the second fixing frame 42 is connected with the other end of the second damping portion 40. The frame body 41 may have a rectangular parallelepiped shape, with a polygonal through hole 410 provided therebetween. The second movable part 5 may have a polygonal shape, and the second movable part 5 may be embedded in the polygonal through hole 410. The frame body 41 and the second fixing frame 42 may be coupled by screw or glue. The second fixing frame 42 and the second damping portion 40 may be integrally formed. The second damping portion 40 may be disposed perpendicular to the frame body 41.

As shown in fig. 8, preferably, the number of the second damping portions 40 is two, and the second fixing frame 42 is disposed between the two second damping portions 40. For example, two second damping portions 40 may be disposed in parallel. The number of the second gels 50 may be the same as the number of the second damping portions 40, so that each second gel 50 may independently act on the corresponding second damping portion 40, thereby avoiding simultaneous failure of each second damping portion 40 or each second gel 50 and improving the reliability of the damping device 1 (refer to fig. 1 for the damping device 1, the same applies hereinafter). The number of the second fixing frames 42 is two, and the two second fixing frames 42 are respectively arranged at two side parts of the frame body 41. For example, two second holders 42 may be disposed face-to-face (e.g., symmetrically about the plane of XoZ), with two second holders 42 being located at the edges of polygonal through-hole 410. Each second fixing frame 42 may include a square plate 420 and two second straight bars 421, and the square plate 420 and the two second straight bars 421 may be integrally formed. Each square plate 420 may be fixed to an upper surface of the frame body 41 at a position near the middle of the side of the frame body 41. Two second straight bars 421 may be disposed parallel to each other and perpendicular to the long side of the square plate 420, and each second straight bar 421 is perpendicularly connected to one second damping portion 40.

Referring to fig. 8 and 9, the second damping portion 40 may have a cylindrical shape. The second rounded edge 400 may be a rounded corner of the cross section of the second damper portion 40, for example, the second rounded edge 400 may be a rounded corner on the cross section of an existing square damper pin. The second damping portion 40 may be disposed perpendicular to the frame 4, for example, the second damping portion 40 may be parallel to the Z-axis. The second damping portion 40 may be made of a metal material, for example, steel or an aluminum alloy. The cross section of the second damping portion 40 may be parallel to the plane XoY. Although the second gel 50 moves along the axial direction of the second damping portion 40 in the normal state, when the damping device 1 (refer to fig. 1 for the damping device 1) is collided (e.g. falls onto the ground), the second gel 50 also moves along the radial direction of the first damping portion 20 (refer to fig. 6 for the first damping portion 20, and the same applies below) (e.g. moves along the direction parallel to the X-axis or the Y-axis), so that the second circular arc edge 400 is directed toward the movement direction of the first damping portion 20 (e.g. the second circular arc edge 400 is directed parallel to the X-axis or the Y-axis), and the second gel 50 is prevented from being damaged by the second damping portion 40 when the second gel 50 moves along the radial direction of the first damping portion 20.

As shown in fig. 9, the second circular arc 400 may preferably protrude outward, for example, in a direction parallel to the X-axis or the Y-axis. The second circular arc side 400 is circular arc-shaped when viewed in cross section of the second damping portion 40, and the second circular arc side 400 forms a cylindrical surface when viewed from the entirety of the second damping portion 40. The cross section of the second damper portion 40 defines a second inscribed circle 401 (the second inscribed circle 401 is indicated by a circle formed by a chain line in fig. 9), and the circumference of the second inscribed circle 401 is smaller than the circumference of the cross section of the second damper portion 40. The second inscribed circle 401 may be a circle of a maximum area that the cross section of the second damping portion 40 can be formed by rounding. The second inscribed circle 401 having a smaller circumference than the cross-section of the second damping portion 40 may avoid the second damping portion 40 from being excessively rounded, i.e., avoid the second inscribed circle 401 having a circumference equal to or greater than the cross-section of the second damping portion 40. Because if the perimeter of the second inscribed circle 401 is equal to or greater than the perimeter of the cross section of the second damping portion 40, although the sharp corners of the second damping portion 40 have been removed by rounding, the second damping portion 40 is prevented from breaking the second gel 50 (see fig. 8 for the second gel 50, and the same applies below), but at the same time the perimeter of the cross section of the second damping portion 40 is also caused to be too small (the perimeter of the cross section of the second damping portion 40 is too small, as seen from the entirety of the second damping portion 40, the side surface area of the second damping portion 40 is caused to be too small, that is, the side area of the second damping portion 40 for abutting against the second gel 50 is caused to be too small), and thus the retarding force generated in the second damping portion 40 is reduced, so that the frame 4 (see fig. 8 for the frame 4) needs to be increased by means of other elastic elements (e.g., by means of a spring connection), which would make the structure of the damping device 1 more complex.

As shown in fig. 9, the cross section of the second damping portion 40 preferably further includes a second straight edge 402, and the second straight edge 402 is connected with the second circular arc edge 400. The number of the second straight edges 402 is four, the number of the second circular arc edges 400 is four, and the four second straight edges 402 and the four second circular arc edges 400 are alternately and sequentially connected to form the cross section of the second damping portion 40. The second straight edge 402 is a line segment as seen in cross section of the second damper portion 40, and the second straight edge 402 forms a plane as seen in the entirety of the second damper portion 40. For example, two of the four second straight edges 402 may be parallel to each other, and the remaining two of the four second straight edges 402 may be parallel to each other. The lengths of the four second circular arc sides 400 may be the same, and both ends of each second circular arc side 400 may be connected with one second straight side 402. The second inscribed circle 401 may be tangent to the four second straight edges 402 at the same time, and the center of the second inscribed circle 401 may coincide with the center of the cross section of the second damping portion 40.

As shown in fig. 10, in another embodiment, there is also provided an electronic apparatus 7 including the damping device 1 in the foregoing embodiment. For example, the electronic device 7 may be a smart phone, a digital camera, a car recorder or a wearable device, etc.

The damping device and the electronic device provided by the embodiments of the present utility model have been described in detail above, and those skilled in the art will appreciate that the scope of the embodiments of the present utility model is defined by the claims. In view of the foregoing, it is intended that the present utility model not be limited to the above description, but that all equivalent modifications and variations according to the spirit and technical idea of the present utility model be covered by the appended claims.

Claims (13)

1. A damping device for use with a voice coil motor, comprising:

the first movable part comprises a first damping part, and the cross section of the first damping part comprises a first arc edge; and

the base comprises first gel, the base is arranged corresponding to the first movable part, one end of the first damping part is inserted into the first gel, the first movable part is configured to drive the first damping part to move along the radial direction of the first damping part relative to the first gel, and the first circular arc edge faces the moving direction of the first damping part.

2. The damping device of claim 1, wherein the cross section of the first damping portion further comprises a first straight edge, the first straight edge and the first rounded edge being connected.

3. The damping device according to claim 2, wherein the number of the first straight edges is four, the number of the first circular arc edges is four, and the four first straight edges and the four first circular arc edges are alternately connected in sequence to form a cross section of the first damping portion.

4. A damping device according to claim 3, wherein the cross-section of the first damping portion defines a first inscribed circle having a circumference smaller than the circumference of the cross-section of the first damping portion, the first inscribed circle being tangential to the four first straight edges.

5. The damping device of claim 1, wherein the first damping portion further comprises a rounded end located at an axial end of the first damping portion and inserted into the first gel, the rounded end facing the axial direction of the first damping portion.

6. The damping device of claim 1, further comprising:

the frame comprises a second damping part, and the cross section of the second damping part comprises a second arc edge; and

the second movable part comprises second gel, the second movable part is arranged corresponding to the frame, one end of the second damping part is inserted into the second gel, the second movable part is configured to drive the second gel to move relative to the second damping part along the axial direction of the second damping part, and the second circular arc edge faces the movement direction of the first damping part.

7. The damping device of claim 6, wherein the cross section of the second damping portion further comprises a second straight edge, the second straight edge and the second rounded edge being connected.

8. The damper according to claim 7, wherein the number of the second straight edges is four, the number of the second circular arc edges is four, and the four second straight edges and the four second circular arc edges are alternately connected in sequence to form a cross section of the second damper portion.

9. The damping device of claim 8, wherein a cross-section of the second damping portion defines a second inscribed circle having a perimeter that is less than a perimeter of the cross-section of the second damping portion, the second inscribed circle being tangent to the four second straight edges.

10. The damping device according to claim 6, wherein the frame further comprises a frame body and a second fixing frame, the frame body is sleeved on the second movable component, the frame body is connected with the second fixing frame, and the second fixing frame is connected with the other end of the second damping portion.

11. The damping device according to claim 10, wherein the number of the second damping parts is two, and the second fixing frame is arranged between the two second damping parts.

12. The damping device according to claim 11, wherein the number of the second fixing frames is two, and the two second fixing frames are respectively disposed at two side portions of the frame body.

13. An electronic device, comprising: damping device according to any one of claims 1-12.