A guide mechanism for reducing action noise

Abstract

The utility model relates to a kind of guiding mechanism for reducing action abnormal sound, including shell, movable part;Movable part includes first carrier and the lens module being arranged in first carrier;Movable part is configured as can move along the optical axis direction of lens module to drive the movement of the lens module along optical axis direction;First carrier and shell form between first guiding mechanism and second guiding mechanism;First guiding mechanism is arranged between the sidewall of shell and first carrier;Second guiding mechanism is arranged between the bottom wall of shell and first carrier;Linear distance between first guiding mechanism and second guiding mechanism is greater than the size of the first carrier in first direction;The connecting direction between first carrier and bottom wall is second direction;Second direction is perpendicular to optical axis direction;First direction is perpendicular to optical axis direction and second direction.The utility model can solve the noise problem caused by movable part lateral vibration due to one-side thrust in the movement of lens module in long stroke when long-stroke zoom / focus.

Description

Technical Field

[0001] This utility model relates to the field of optical imaging, and in particular to a guide mechanism that reduces abnormal noise during operation. Background Technology

[0002] As the shooting functions of cameras in existing electronic devices become more and more powerful, they are required to be able to shoot at close range (15cm) while also being able to shoot clearly at distant scenes (10-20 meters). Therefore, the lens must have the functions of zooming at long distance and focusing at close distance. Such lenses often require a long stroke to adjust the focus position, resulting in a relatively long total stroke of the lens, sometimes reaching 5-7mm.

[0003] In existing periscope modules, the lens module typically employs a single-sided push-pull structure. While this structure reduces magnetic leakage to the side, the movable part (lens module) experiences not only magnetic thrust along the optical axis but also lateral magnetic thrust perpendicular to the optical axis (±F) during its movement. Y This is particularly severe at the ends of longer travel distances, posing a risk of the lens module tipping over and derailing, and also causing lateral vibration and abnormal noise in the moving parts. See also Figure 1 It can be seen that the magnitude of the lateral magnetic thrust is positively correlated with the abnormal noise. In addition, this lateral force also acts in the opposite direction on the coil and the flexible board to which it is attached, producing a drum-like noise.

[0004] In the prior art, lens modules are usually driven by a guide mechanism set between the bottom and the housing, such as the structure disclosed in the patent with patent publication number CN222050582U. Although this structure can ensure the effective movement of the lens module in the straight direction, it has a very weak ability to suppress lateral magnetic thrust, and the noise and stability during the movement are not good. Utility Model Content

[0005] In order to solve the above-mentioned problems of the prior art, the present invention provides a guide mechanism that reduces abnormal noise during operation.

[0006] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0007] A guide mechanism for reducing abnormal noise during operation, comprising:

[0008] The shell has an accommodating space inside;

[0009] A movable part is disposed in an accommodating space; the movable part includes a first carrier and a lens module disposed within the first carrier; the movable part is configured to move along the optical axis of the lens module to drive the lens module to move along the optical axis.

[0010] A first guide mechanism and a second guide mechanism are formed between the first carrier and the housing; the first guide mechanism is disposed between the side wall of the housing and the first carrier; the second guide mechanism is disposed between the bottom wall of the housing and the first carrier; the straight distance between the first guide mechanism and the second guide mechanism is greater than the dimension of the first carrier along the first direction; the first direction is the connection direction between the side wall and the first carrier; the first direction is perpendicular to the optical axis direction.

[0011] In one embodiment of the present invention, a driving assembly is provided between the first carrier and the housing; the driving assembly includes a driving magnet disposed on the side of the first carrier and a driving coil disposed on the housing opposite to the driving magnet.

[0012] In one embodiment of the present invention, the housing includes a top cover and a base; the bottom opening of the top cover is fixedly connected to the base; and an accommodating space is formed inside the base.

[0013] In one embodiment of the present invention, the first guiding mechanism includes a first carrier groove disposed on the side of the first carrier; a first linear moving member is disposed within the first carrier groove;

[0014] The second guiding mechanism includes a second carrier groove disposed at the bottom of the first carrier; a second linear moving component is disposed within the second carrier groove.

[0015] In one embodiment of the present invention, the second carrier groove includes a first abutting wall and a second abutting wall arranged at an angle for abutting against the second linear moving member; the housing is provided with a third carrier groove disposed opposite to the second carrier groove; the second carrier groove and the third carrier groove surround the second linear moving member; the third carrier groove includes a third abutting wall and a fourth abutting wall arranged at an angle for abutting against the second linear moving member; the first abutting wall is disposed parallel to the fourth abutting wall; the second abutting wall is disposed parallel to the third abutting wall.

[0016] In one embodiment of this utility model, the included angle between the first abutting wall and the second abutting wall is α, where 60°≤α≤120°.

[0017] In one embodiment of this utility model, α = 90°.

[0018] In one embodiment of the present invention, the bottom of the first carrier is provided with an adsorption magnet; the bottom wall is provided with a magnetic sheet that cooperates with the adsorption magnet.

[0019] In one embodiment of this utility model, the total magnetic attraction between the adsorption magnet and the magnetic sheet is greater than 10 times the weight of the movable part.

[0020] In one embodiment of the present invention, the first linear moving member and / or the second linear moving member includes at least two large balls and a plurality of small balls disposed between adjacent large balls; the diameter of the small balls is smaller than the diameter of the large balls.

[0021] The beneficial effect of this utility model is that it can solve the noise problem caused by the lateral vibration of the movable part due to the unilateral thrust during the long-stroke zoom / focus movement of the lens module.

[0022] The guiding structure composed of large and small balls can prevent sliding interference from linearly arranged balls, thus improving the smoothness of ball rolling.

[0023] The first and second guide mechanisms are located on the side and bottom respectively, which can counteract lateral thrust / suction and ensure dynamic stability during movement.

[0024] By using the force exerted on the first carrier by the magnet, it can resist the detachment force generated by shaking or collision.

[0025] The rotational torque is provided by multiple adsorption magnets to resist the rotational torque generated by lateral magnetic attraction.

[0026] The first carrier groove adopts a trapezoidal groove to ensure that the movable part can counteract lateral forces during movement. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram showing the relationship between lateral magnetic thrust and abnormal noise;

[0029] Figure 2 This is an exploded view of the structure of this utility model;

[0030] Figure 3 This is a perspective view of the movable part of this utility model;

[0031] Figure 4 This is the front view of this utility model;

[0032] Figure 5 yes Figure 4 AA section diagram;

[0033] Figure 6 This is a schematic diagram of the linear moving component of this utility model;

[0034] Figure 7 This is a schematic diagram illustrating the movement of multiple large and small ball bearings in this utility model.

[0035] Explanation of reference numerals in the attached figures:

[0036] 100. Housing; 110. Base; 111. Third carrier groove; 1111. Third abutment wall; 1112. Fourth abutment wall; 112. Side wall; 113. Bottom wall; 120. Top cover; 130. Magnetic sheet; 140. Magnet; 200. Movable part; 201. First carrier; 210. Lens module; 220. First guide mechanism; 221. First carrier groove; 222. First linear movement component; 230. Second guide mechanism; 231. Second carrier groove; 2311. First abutment wall; 2312. Second abutment wall; 232. Second linear movement component; 2321. Large ball bearing; 2322. Small ball bearing; 240. Drive assembly; 241. Drive magnet; 242. Drive coil; 300. Second carrier. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0038] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] Example:

[0041] like Figure 2 As shown, a guide mechanism for reducing abnormal noise during operation includes a housing 100; an accommodating space is formed within the housing 100; in one embodiment, the housing 100 includes a top cover 120 and a base 110; the bottom opening of the top cover 120 is fixedly connected to the base 110; an accommodating space is formed within the base 110; a flexible vibration-absorbing plate is provided between the top cover 120 and the base 110; in one embodiment, the flexible vibration-absorbing plate can be attached to the base 110 and / or the top cover 120; in one embodiment, the flexible vibration-absorbing plate can be a polymer material, such as polyurethane foam or silicone rubber; in another embodiment, the flexible vibration-absorbing plate can also be a high-damping engineering material, such as damping sheets or gel-damping polymers.

[0042] In one embodiment, a movable part 200 is provided within the accommodating space; the movable part 200 includes a first carrier 201 and a lens module 210 disposed within the first carrier 201; the movable part 200 is configured to move along the optical axis direction of the lens module 210 to drive the lens module 210 to move along the optical axis direction; the optical axis direction is parallel to the Z-axis direction, and the movable part 200 moves along the Z-axis direction to achieve zoom / focus.

[0043] like Figure 3As shown, in one embodiment, a first guide mechanism 220 and a second guide mechanism 230 are formed between the first carrier 201 and the housing 100; the first guide mechanism 220 is disposed between the side wall 112 of the housing 100 and the first carrier 201; the second guide mechanism 230 is disposed between the bottom wall 113 of the housing 100 and the first carrier 201; in another embodiment, the first guide mechanism 220 is disposed between the side wall 112 of the base 110 and the first carrier 201; the second guide mechanism 230 is disposed between the bottom wall 113 of the base 110 and the first carrier 201; the side wall 112 of the base 110 includes two oppositely disposed side walls, and the first guide mechanism 220 cooperates with one of the side walls 112; in another embodiment, multiple first guide mechanisms 220 may be arranged in parallel.

[0044] In one embodiment, the linear distance between the first guide mechanism 220 and the second guide mechanism 230 is greater than the dimension of the first carrier 201 along a first direction; the first direction is the connection direction between the side wall 112 and the first carrier 201; the first direction is perpendicular to the optical axis direction; the connection direction between the first carrier 201 and the bottom wall 113 is a second direction; the second direction is perpendicular to the optical axis direction; the first direction is perpendicular to both the optical axis direction and the second direction. The first direction is parallel to the Y-axis direction, and the second direction is parallel to the X-axis direction; as shown... Figure 5 As shown, the straight-line distance between the first guide mechanism 220 and the second guide mechanism 230 is Figure 5 The distance between the first linear moving member 222 and the second linear moving member 232, and the dimension of the first carrier 201 along the first direction are... Figure 5 In the horizontal direction, in a right triangle, the hypotenuse is longer than the base. This design makes the force on the first carrier 201 more reasonable and can effectively resist the adverse effects of lateral force (force in the Y-axis direction). It can also be understood that the first guide mechanism 220 is set on the side of the first carrier 201, and the second guide mechanism 230 is set on the bottom of the first carrier 201 away from the first guide mechanism 220.

[0045] In one embodiment of this utility model, a driving assembly 240 is provided between the first carrier 201 and the housing 100; the driving assembly 240 includes a driving magnet 241 disposed on the side of the first carrier 201 and a driving coil 242 disposed on the housing 100 opposite to the driving magnet 241. The driving coil 242 mainly applies a force in the Z-axis direction to the driving magnet 241, thereby driving the movable part 200 to reciprocate along the Z-axis direction. However, at the same time, the driving coil 242 also applies a force in the Y-axis direction (lateral magnetic thrust) to the driving magnet 241, which brings various adverse effects.

[0046] In one embodiment of the present invention, the first guide mechanism 220 includes a first carrier groove 221 disposed on the side of the first carrier 201; a first linear moving member 222 is disposed in the first carrier groove 221; in one embodiment, the first carrier groove 221 is a trapezoidal groove, a V-shaped groove, an arc groove, or a polygonal groove.

[0047] In one embodiment of the present invention, the second guide mechanism 230 includes a second carrier groove 231 disposed at the bottom of the first carrier 201; a second linear moving member 232 is disposed in the second carrier groove 231.

[0048] In one embodiment of this utility model, the second carrier groove 231 includes a first abutment wall 2311 and a second abutment wall 2312 arranged at an angle for abutting against the second linear moving member 232; the housing 100 is provided with a third carrier groove 111 disposed opposite to the second carrier groove 231; the second carrier groove 231 and the third carrier groove 111 surround the second linear moving member 232; the third carrier groove 111 includes a third abutment wall 1111 and a fourth abutment wall 1112 arranged at an angle for abutting against the second linear moving member 232; the first abutment wall 2311 is disposed parallel to the fourth abutment wall 1112; the second abutment wall 2312 is disposed parallel to the third abutment wall 1111. See also Figure 5 When the movable part 200 moves, the second linear moving member 232 forms contact points with the first abutting wall 2311, the second abutting wall 2312, the third abutting wall 1111, and the fourth abutting wall 1112 respectively; the first carrier 201 will be subjected to an additional lateral force in the Y-axis direction. The lateral force may be the lateral magnetic thrust / lateral magnetic attraction / other external force applied by the drive coil 242, and the direction of the lateral force may be the positive Y-axis direction or the negative Y-axis direction.

[0049] When the first carrier 201 mainly bears the lateral force in the positive Y-axis direction, the first linear moving member 222 can resist the first carrier 201 and apply a force in the negative Y-axis direction to the first carrier 201 to counteract the lateral force, so as to ensure the stability of the movable part 200 during movement and reduce the noise during movement.

[0050] When the first carrier 201 mainly bears the lateral force in the negative Y-axis direction, the fourth abutment wall 1112 can abut against the first carrier 201 and apply a force in the positive Y-axis direction to the first carrier 201 to counteract the lateral force, so as to ensure the stability of the movable part 200 when it moves and reduce the noise when it moves; therefore, the first linear moving member 222 and the second linear moving member 232 can effectively counteract the noise caused by the lateral force and the problems of reduced movement stability, overturning or derailment.

[0051] See Figure 4 and Figure 5When the movable part 200 moves, it bears a lateral force F in the negative Y-axis direction. Y At the same time, the first carrier 201 will also generate a torque M1 centered on the second linear moving member 232, M1=F Y ×h; When the torque M1 is small, the torque formed by the weight of the first carrier 201 can offset the torque M1; when the torque M1 is large, it may cause overturning; in one embodiment, the bottom of the first carrier 201 is provided with an adsorption magnet 140; the bottom wall 113 is provided with a magnetic sheet 130 that cooperates with the adsorption magnet 140; the torque M1 can be offset by the action of the adsorption magnet 140 and the magnetic sheet 130; in one embodiment, two adsorption magnets 140 are provided; the torque M2 formed by the two adsorption magnets 140, M2=F1×L1+F2×L2, M2>M1, such as Figure 5 It can be seen that the lever arm of the two adsorption magnets 140 is significantly greater than the lever arm of the lateral force FY. The adsorption magnets 140 can achieve the anti-tipping of the first carrier 201 with a relatively small attraction force. In one embodiment, the total magnetic attraction force between the adsorption magnets 140 and the magnetic sheet 130 is greater than 10 times the weight of the movable part 200, that is, F1+F2 is greater than 10 times the weight of the movable part 200. It can resist the separation force generated by hand shaking and collision, and ensure that the first carrier 201 is always in contact with the second linear moving member 232.

[0052] In one embodiment of the present invention, the included angle between the first abutting wall 2311 and the second abutting wall 2312 is α, where 60°≤α≤120°.

[0053] In one embodiment of this utility model, α = 90°. With this angle design, the assembly precision of the first carrier 201 can be effectively improved; for example... Figure 5 As shown, the first linear moving component 222 can be tightly attached to the side wall 112 and the first carrier groove 221 during assembly, and the second linear moving component 232 can be tightly attached to the first abutting wall 2311 and the fourth abutting wall 1112. That is, the first carrier 201 can be assembled without having any movement space in the Y-axis direction. In a physical sense, it directly limits the displacement in the Y-axis direction and provides favorable structural support for offsetting lateral forces. In the prior art, space needs to be reserved between the first carrier 201 and the two side walls 112 for assembly, which provides room for movement in the Y-axis direction. Moreover, the prior art only uses two parallel guide mechanisms at the bottom of the first carrier 201, which makes it difficult to avoid the influence of lateral forces.

[0054] In one embodiment of this utility model, the first linear moving member 222 and / or the second linear moving member 232 includes at least two large ball bearings 2321 and a plurality of small ball bearings 2322 disposed between adjacent large ball bearings 2321; the diameter of the small ball bearings 2322 is smaller than the diameter of the large ball bearings 2321. It is understood that multiple large ball bearings 2321 and small ball bearings 2322 are alternately arranged to ensure that the large ball bearings 2321 have a unidirectional movement tendency.

[0055] See Figure 6 The structure is illustrated by placing a small ball 2322 between two large ball bearings 2321. The small ball bearing 2322 is sandwiched between the two large ball bearings 2321, and the small ball bearing 2322 is smaller in size. Figure 6 The dashed line indicates the size difference between the large ball 2321 and the small ball 2322. Therefore, the small ball 2322 typically only abuts against one side of the structural component or is clamped in the middle by the large ball 2321. The two large balls 2321 can rotate in the same direction. Even when the three balls are rolling close together, the small ball 2322's conduction within them promotes the same-direction rotation of the two large balls 2321, effectively ensuring smooth movement and reducing vibration. When the large ball 2321... Figure 6 The rotation of the large ball 2321 is directly driven by the movement of the first carrier 201, while the small ball 2322 is a driven structure, mainly driven by the rotation of the large ball 2321. The small ball 2322 rotates counterclockwise. Due to its small size, the pressure of the small ball 2322 when it abuts against the structural component on one side is very small, and the friction is insufficient to affect the rotation of the small ball 2322. Therefore, in actual movement, the large ball 2321 and the small ball 2322 can effectively maintain a rolling state, thereby avoiding sliding friction when the first carrier 201 moves. Maintaining rolling friction when the first carrier 201 moves can effectively avoid shaking during focusing and improve focusing speed; Figure 7 The diagram shows the movement of multiple large ball bearings 2321 and small ball bearings 2322.

[0056] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A guide mechanism for reducing the noise of movement, characterized by, include: The housing (100) has an accommodating space formed therein; A movable part (200) is disposed in the accommodating space; the movable part (200) includes a first carrier (201) and a lens module (210) disposed within the first carrier (201); the movable part (200) is configured to move along the optical axis direction of the lens module (210) to drive the lens module (210) to move along the optical axis direction; A first guide mechanism (220) and a second guide mechanism (230) are formed between the first carrier (201) and the housing (100); the first guide mechanism (220) is disposed between the side wall (112) of the housing (100) and the first carrier (201); the second guide mechanism (230) is disposed between the bottom wall (113) of the housing (100) and the first carrier (201); the straight distance between the first guide mechanism (220) and the second guide mechanism (230) is greater than the dimension of the first carrier (201) along a first direction; the first direction is the connection direction between the side wall (112) and the first carrier (201); the first direction is perpendicular to the optical axis direction.

2. A guide mechanism for reducing operational noise according to claim 1, characterized in that: A drive assembly (240) is provided between the first carrier (201) and the housing (100); the drive assembly (240) includes a drive magnet (241) disposed on the side of the first carrier (201) and a drive coil (242) disposed on the housing (100) relative to the drive magnet (241).

3. The guide mechanism of claim 1, wherein: The housing (100) includes a top cover (120) and a base (110); the bottom opening of the top cover (120) is fixedly connected to the base (110); an accommodating space is formed inside the base (110); a flexible vibration-absorbing plate is provided between the top cover (120) and the base (110).

4. The guide mechanism of claim 1, wherein: The first guide mechanism (220) includes a first carrier groove (221) disposed on the side of the first carrier (201); a first linear moving member (222) is disposed in the first carrier groove (221); The second guide mechanism (230) includes a second carrier groove (231) provided at the bottom of the first carrier (201); a second linear moving member (232) is provided in the second carrier groove (231).

5. A guide mechanism for reducing operational noise according to claim 4, wherein: The second carrier groove (231) includes a first abutting wall (2311) and a second abutting wall (2312) arranged at an angle for abutting against the second linear moving member (232); the housing (100) is provided with a third carrier groove (111) disposed opposite to the second carrier groove (231); the second carrier groove (231) and the third carrier groove (111) surround the second linear moving member (232); the third carrier groove (111) includes a third abutting wall (1111) and a fourth abutting wall (1112) arranged at an angle for abutting against the second linear moving member (232); the first abutting wall (2311) is disposed parallel to the fourth abutting wall (1112); the second abutting wall (2312) is disposed parallel to the third abutting wall (1111).

6. A guide mechanism for reducing operational noise according to claim 5, wherein: The included angle between the first abutting wall (2311) and the second abutting wall (2312) is α, where 60°≤α≤120°.

7. A guide mechanism for reducing abnormal noise during operation according to claim 6, characterized in that: The value of α is 90°.

8. The guide mechanism of claim 1, wherein: The bottom of the first carrier (201) is provided with an adsorption magnet (140); the bottom wall (113) is provided with a magnetic sheet (130) that cooperates with the adsorption magnet (140).

9. A guide mechanism for reducing operational noise according to claim 8, wherein: The total magnetic attraction between the adsorption magnet (140) and the magnetic sheet (130) is greater than 10 times the weight of the movable part (200).

10. A guide mechanism for reducing abnormal noise during operation according to any one of claims 4-7, characterized in that: The first linear motion component (222) and / or the second linear motion component (232) include at least two large balls (2321) and a plurality of small balls (2322) disposed between adjacent large balls (2321); the diameter of the small balls (2322) is smaller than the diameter of the large balls (2321).

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