Driving mechanism, camera device, and electronic device

Abstract

The present disclosure relates to a driving mechanism, a camera device and an electronic device. The driving mechanism comprises a housing, a driving assembly and a limiting piece. The housing comprises a receiving cavity. The driving assembly is arranged in the receiving cavity. The driving assembly comprises a mover and a support body. The mover is connected to the housing through the support body. The support body is elastically arranged. The mover is capable of moving relative to the housing. The limiting piece is arranged between the housing and the mover. The limiting piece has a switchable first state and a second state. In the first state, the limiting piece is capable of abutting against the mover. The movement of the mover relative to the housing has a first stroke. In the second state, the limiting piece is kept separate from the mover. The movement of the mover relative to the housing has a second stroke. The second stroke is greater than the first stroke.

Description

Technical Field

[0001] This disclosure relates to the field of equipment protection technology, and in particular to a drive mechanism, a camera device, and an electronic device. Background Technology

[0002] Electronic devices typically include a drive mechanism, such as the optical image stabilization device in a camera. The mover of the drive mechanism is connected to the suspension wire. External vibrations can easily cause the mover to move repeatedly, which can lead to aging and failure of the suspension wire, fatigue fracture, and reduced service life. Utility Model Content

[0003] To overcome the problems existing in the related technologies, this disclosure provides a drive mechanism, a camera device, and an electronic device.

[0004] In a first aspect, the driving mechanism provided according to the embodiments of this disclosure includes a housing, a driving assembly, and a limiting member. The housing includes a receiving cavity; the driving assembly is disposed within the receiving cavity and includes a mover and a support body. The mover is connected to the housing through the support body, the support body is elastically disposed, and the mover is capable of moving relative to the housing; the limiting member is disposed between the housing and the mover, and the limiting member has a switchable first state and a second state; in the first state, the limiting member can abut against the mover, and the mover has a first stroke relative to the housing; in the second state, the limiting member is separated from the mover, and the mover has a second stroke relative to the housing, the second stroke being greater than the first stroke.

[0005] In the technical solution of this disclosure embodiment, the driving component is disposed in the housing, and the housing provides the mounting base and protection. The driving component includes a mover and a support body. The mover is connected to the housing through the support body, and the support body is elastically configured so that the mover can move relative to the housing and drive the support body to produce elastic deformation. The support body can provide support for the mover and reset the mover through elastic force. Based on this, a limiting component is also provided between the housing and the mover. The limiting component can switch between a first state and a second state. When the limiting component is in the first state, it can abut against the mover, thereby limiting the range of motion of the mover relative to the housing, so that the movement of the mover relative to the housing has a first stroke. When the limiting component is in the second state, it remains separated from the mover and does not limit the mover, so that the movement of the mover relative to the housing has a second stroke. The second stroke is suitable for situations where the drive mechanism needs to output power, while the first stroke is suitable for situations where the drive mechanism does not output power and the mover moves relative to the housing due to external vibration. Since the second stroke is greater than the first stroke, when the moving stroke is limited by the limiting component, the movement amplitude of the mover under external vibration is smaller, which can reduce the elastic deformation amplitude of the support, thereby reducing the possibility of aging failure of the support and improving the service life of the drive mechanism. Compared with related technologies, where the mover moves at a large amplitude due to external vibration, causing the suspension wire to easily age and fail, the limiting member set in the embodiment of this disclosure can effectively limit the stroke of the mover under the action of external vibration, reduce the amplitude of elastic deformation of the support body due to external vibration, reduce the possibility of aging and failure of the support body, and improve the service life of the drive mechanism.

[0006] In some embodiments, the drive mechanism further includes a circuit board electrically connected to a limiting member, the limiting member deforming based on an electrical signal from the circuit board to switch between a first state and a second state.

[0007] The technical solution of this disclosure embodiment, by setting a circuit board, electrically connects the limiting member to the circuit board, and the limiting member can deform based on the electrical signal of the circuit board, thereby changing the shape of the limiting member so that the limiting member can switch between a first state and a second state. Compared with the solution of setting a driving member to drive the limiting member to move, setting a deformable limiting member has a simpler structure and is more convenient to assemble.

[0008] In some embodiments, the limiting member deforms at least along a preset direction, which is the direction of movement of the mover relative to the housing. In a first state, the limiting member has a first dimension along the preset direction, and in a second state, the limiting member has a second dimension along the preset direction, wherein the first dimension is larger than the second dimension.

[0009] In the technical solution of this disclosure embodiment, the limiting member deforms along the movement direction of the mover relative to the housing. In the first state where it can abut against the mover, the limiting member has a relatively large first dimension along the preset direction so that the limiting member limits the stroke of the mover. In the second state, the limiting member has a relatively small second dimension so that the limiting member avoids the mover and facilitates the mover to obtain a larger stroke.

[0010] In some embodiments, the circuit board is disposed on the outside of the housing, the limiting member penetrates the housing, one end of the limiting member outside the housing is connected to the circuit board, and the other end of the limiting member inside the receiving cavity is used to abut against the moving part.

[0011] In the technical solution of this disclosure embodiment, the circuit board is disposed on the outside of the housing, which facilitates the connection between the circuit board and the external control circuit. The limiting member is disposed through the housing, which facilitates the connection between the limiting member and the circuit board.

[0012] In some embodiments, the housing has a receiving hole, at least a portion of the limiting member is disposed in the receiving hole, and the limiting member is connected to at least one inner wall of the receiving hole.

[0013] The technical solution of this disclosure, by opening a receiving hole in the housing and at least part of the limiting member is disposed in the receiving hole, can improve space utilization and help to miniaturize the drive mechanism. On the other hand, it facilitates the connection between the limiting member and the housing, and the receiving hole can provide limiting and guiding for the deformation of the limiting member so that the deformation direction of the limiting member is more in line with the requirements.

[0014] In some embodiments, the limiting member includes a limiting surface, which is set at an angle to a preset direction, the preset direction being the movement direction of the mover relative to the housing. The limiting surface can abut against the mover to restrict the mover from moving toward the limiting member.

[0015] The technical solution of this disclosure embodiment has a limiting surface set at an angle to a preset direction, which enables the limiting surface to apply force in the direction of movement of the mover relative to the shell, thus having a better limiting effect.

[0016] In some embodiments, the contour of the limiting surface is adapted to the corresponding surface of the mover, and when the limiting surface abuts against the mover, the limiting surface and the corresponding surface of the mover are in contact.

[0017] In the technical solution of this disclosure embodiment, the contour of the limiting surface is adapted to the corresponding surface of the mover. When the limiting surface abuts against the mover, the limiting surface and the corresponding surface of the mover are in contact, so that the interaction force between the limiting member and the mover is more dispersed, thereby improving the load-bearing capacity of both.

[0018] In some embodiments, the mover moves relative to the housing in at least two different preset directions, the preset directions being the direction of movement of the mover relative to the housing, and there are at least two limiting members, with at least one limiting member provided for each preset direction.

[0019] The technical solution of this disclosure embodiment allows the mover to move relative to the housing in at least two different preset directions, making the movement of the mover more flexible and producing richer driving effects. Each preset direction is provided with at least one limiting member so that the mover can be limited in multiple directions, thereby coping with complex external vibrations.

[0020] Secondly, the camera device provided according to the embodiments of this disclosure includes a base, a camera, and a driving mechanism as described in the first aspect. The camera is movably connected to the base. The driving mechanism is disposed between the camera and the base, and the moving part of the driving mechanism is connected to the camera. The moving part is used to drive the camera to move relative to the base.

[0021] The technical solution of this disclosure embodiment includes a limiting component in the driving mechanism of the camera device. The limiting component can effectively limit the stroke of the moving part under external vibration, reduce the amplitude of elastic deformation of the support body due to external vibration, reduce the possibility of aging and failure of the support body, and improve the service life of the driving mechanism.

[0022] Thirdly, the electronic device provided according to the embodiments of this disclosure includes a drive mechanism of the first aspect or a camera device of the second aspect.

[0023] The technical solution of this disclosure embodiment includes a limiting component in the drive mechanism of the electronic device. The limiting component can effectively limit the stroke of the mover under external vibration, reduce the amplitude of elastic deformation of the support body due to external vibration, reduce the possibility of aging and failure of the support body, and improve the service life of the drive mechanism.

[0024] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0026] Figure 1 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this disclosure;

[0027] Figure 2 A schematic diagram of the drive mechanism provided in the embodiments of this disclosure;

[0028] Figure 3 This is a schematic diagram of the structure of the driving mechanism in the first state provided in the embodiments of this disclosure;

[0029] Figure 4 A schematic diagram of the limiting member in the second state of the drive mechanism provided in an embodiment of this disclosure;

[0030] Figure 5 This is a schematic diagram of the internal structure of the drive mechanism provided in an embodiment of the present disclosure;

[0031] Figure 6 This is an exploded structural diagram of the drive mechanism provided in an embodiment of this disclosure.

[0032] Figure label:

[0033] 100-Housing; 110-Receiving cavity; 120-Outer shell; 130-Base; 140-Accommodation hole; 200-Drive assembly; 210-Movers; 220-Support body; 300-Limiting component; 310-Limiting surface; 400-Circuit board; 500-Base; 600-Camera; H1-First stroke; H2-Second stroke; L1-First dimension; L2-Second dimension; X-Preset direction; X1-First direction; X2-Second direction. Detailed Implementation

[0034] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the specific technical solutions of this disclosure will be further described in detail below with reference to the accompanying drawings of the embodiments of this disclosure. The following embodiments are used to illustrate this disclosure, but are not intended to limit the scope of this disclosure.

[0036] In the embodiments of this disclosure, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0037] Furthermore, in the embodiments of this disclosure, directional terms such as "up," "down," "left," and "right" are defined relative to the orientation in which the components are schematically placed in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the orientation in which the components are placed in the accompanying drawings.

[0038] In the embodiments disclosed herein, unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium.

[0039] In embodiments of this disclosure, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0040] In this disclosure, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or illustration. Any embodiment or design described as "exemplary" or "for example" in this disclosure should not be construed as being more preferred or advantageous than other embodiments or designs. Rather, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0041] This disclosure provides an electronic device, which can be any device with a camera, such as a mobile phone, tablet computer, handheld game console, VR / AR device, action camera, etc. Among them, mobile phones include candybar phones, foldable screen phones, etc., and tablet computers include ordinary tablets, foldable tablets, and multi-functional tablets (such as tablets with foldable keyboards), etc.

[0042] In some technical solutions, the driving mechanism in the camera is a suspension motor. The driving mechanism includes a housing, a stator, a mover, and a suspension wire. The stator is fixed relative to the housing, and the mover is connected to the housing through the suspension wire. The suspension wire provides support for the mover. Under the action of the electromagnetic force of the stator, the mover can move relative to the stator. The suspension wire undergoes elastic deformation with the movement of the mover and can provide elastic force for the stator to return to its original position.

[0043] Due to the complex usage scenarios of electronic devices, such as when a mobile phone is placed in a mobile phone holder in a vehicle, the vibrations from bumps and other vibrations during vehicle movement will be transmitted to the suspension motor in the mobile phone, causing the mover to move relative to the housing and causing the suspension wire to undergo elastic deformation. The repeated movement of the mover with external vibrations will cause the suspension wire to age and fail, and eventually break due to fatigue. This is especially true when the mover is heavy and the vibration frequency is high, which makes the suspension wire more prone to breakage and failure, thus affecting its service life.

[0044] Furthermore, embodiments of this disclosure also provide a driving mechanism, referring to... Figure 1 , Figure 2 , Figure 3 and Figure 4 The driving mechanism includes a housing 100, a driving assembly 200, and a limiting member 300. The housing 100 includes a receiving cavity 110. The driving assembly 200 is disposed within the receiving cavity 110 and includes a mover 210 and a support 220. The mover 210 is connected to the housing 100 via the support 220, which is elastically configured, allowing the mover 210 to move relative to the housing 100. The limiting member 300 is disposed between the housing 100 and the mover 210 and has a switchable first state and a second state. In the first state, the limiting member 300 abuts against the mover 210, and the mover 210 moves relative to the housing 100 with a first stroke H1. In the second state, the limiting member 300 remains separated from the mover 210, and the mover 210 moves relative to the housing 100 with a second stroke H2, which is greater than the first stroke H1.

[0045] In this embodiment of the disclosure, the cross-sectional profile of the housing 100 can be a regular or irregular shape such as a circle, ellipse, square, triangle, or trapezoid. The housing 100 can be an integral structure or a split structure.

[0046] In some examples, housing 100 includes a connected base 130 and outer shell 120, which together form a receiving cavity 110. A stator (not shown) is connected to outer shell 120, and a mover 210 is connected to a support 220, which is connected to base 130. The mover 210 is used to drive the movement of external components. The cross-sections of base 130 and outer shell 120 (the cross-section translating the mover 210 relative to the direction of movement of housing 100) are square.

[0047] In this embodiment of the disclosure, the support 220 comprises one or more materials selected from metal, plastic, and fiber, and the support 220 can be a filamentous structure. In some examples, the support 220 is a metal suspension wire.

[0048] In this embodiment of the present disclosure, the drive assembly 200 includes a stator and a mover 210. The stator is fixed relative to the housing 100, and the mover 210 is connected to the base 130 through a support 220. The stator can apply electromagnetic force or electrostatic force to the mover 210 to make the mover 210 move relative to the housing 100.

[0049] In this embodiment of the present disclosure, the ability of the limiting member 300 to abut against the mover 210 means that during the movement of the mover 210 relative to the housing 100, the mover 210 can move to the position of the limiting member 300 and be abutted and limited by the limiting member 300, thus stopping the mover 210; the limiting member 300 and the mover 210 remain separated means that during the movement of the mover 210 relative to the housing 100 under the action of the stator, the stator will not contact the limiting member 300, and the limiting member 300 does not limit the movement of the stator.

[0050] In some examples, the first stroke H1 is 0, meaning that the limiting member 300 fixes the mover 210 relative to the housing 100, making it difficult for the mover 210 to move under the action of external vibration. In other examples, the first stroke H1 is greater than 0 and less than the second stroke H2, meaning that the limiting member 300 restricts the mover 210 to a smaller stroke range, allowing the mover 210 to produce a smaller amplitude of movement. Furthermore, the first stroke H1 of the mover 210 is greater than 0, enabling the mover 210 to separate from the limiting member 300 in the absence of external vibration, which can reduce stress and facilitate assembly.

[0051] It should be noted that the mover 210 can have a first stroke H1 under the action of external vibration, or it can have a first stroke H1 under the action of the stator.

[0052] In some examples, the limiting member 300 and the housing 100 are connected by sliding connection, rotational connection or other movable connection. For example, the limiting member 300 moves relative to the housing 100 to have a first state and a second state. The limiting member 300 can be driven by a motor, telescopic rod or the like. In other examples, the limiting member 300 and the housing 100 are connected by snap-fit, adhesive, welding or fastener connection or other fixed connection. The limiting member 300 changes shape by deformation to have a first state and a second state.

[0053] In the technical solution of this embodiment, the drive assembly 200 is disposed inside the housing 100, which provides the mounting base and protection. The drive assembly 200 includes a mover 210 and a support body 220. The mover 210 is connected to the housing 100 through the support body 220, and the support body 220 is elastically configured so that the mover 210 can move relative to the housing 100 and drive the support body 220 to produce elastic deformation. The support body 220 can provide support for the mover 210 and reset the mover 210 through elastic force.

[0054] Based on this, a limiting member 300 is also provided between the housing 100 and the mover 210. The limiting member 300 can switch between a first state and a second state. When the limiting member 300 is in the first state, it can abut against the mover 210, thereby limiting the range of motion of the mover 210 relative to the housing 100, so that the movement of the mover 210 relative to the housing 100 has a first stroke H1. When the limiting member 300 is in the second state, it remains separated from the mover 210 and does not limit the movement of the mover 210, so that the mover 210 can move relative to the housing 100. The movement of body 100 has a second stroke H2, which is suitable for situations where the drive mechanism needs to output power. The first stroke H1 is suitable for situations where the drive mechanism does not output power and the mover 210 moves relative to the housing 100 due to external vibration. Since the second stroke H2 is greater than the first stroke H1, when the movement stroke of the mover 210 is limited by the limiting member 300, the movement amplitude of the mover 210 under external vibration is smaller, which can reduce the elastic deformation amplitude of the support body 220, thereby reducing the possibility of aging failure of the support body 220 and improving the service life of the drive mechanism.

[0055] Compared with related technologies, where the mover 210 moves at a large amplitude due to external vibration, causing the suspension wire to easily age and fail, the limiting member 300 provided in this embodiment can effectively limit the stroke of the mover 210 under the action of external vibration, reduce the amplitude of elastic deformation of the support 220 due to external vibration, reduce the possibility of aging and failure of the support 220, and improve the service life of the drive mechanism.

[0056] Reference Figure 2 , Figure 5 and Figure 6 In some embodiments of this disclosure, the drive mechanism further includes a circuit board 400, which is electrically connected to a limiting member 300. The limiting member 300 deforms based on an electrical signal from the circuit board 400 to switch between a first state and a second state.

[0057] In some examples, the circuit board 400 is disposed within the receiving cavity 110 to facilitate the connection between the circuit board 400 and the limiting member 300; in other examples, the circuit board 400 is disposed on the outside of the housing 100 to facilitate the connection between the circuit board 400 and the control circuit.

[0058] In some examples, the circuit board 400 is connected to the housing 100 by a detachable connection such as snap-fit, threaded connection, or fastener connection; in other examples, the circuit board 400 is connected to the housing 100 by a non-detachable connection such as soldering or bonding.

[0059] In some examples, the electrical connection between the limiting member 300 and the circuit board 400 is achieved through physical contact; in other examples, the electrical connection between the limiting member 300 and the circuit board 400 is non-contact, for example, by transmitting electrical signals through electric fields, magnetic fields, etc. Furthermore, the circuit board 400 is provided with an extension structure for connecting a control circuit, which is used to control the operation of the drive mechanism.

[0060] In some examples, the limiting member 300 switches to the first state under the action of an electrical signal, and switches to the second state when there is no electrical signal; in other examples, the limiting member 300 switches to the second state under the action of an electrical signal, and switches to the first state when there is no electrical signal; in still other examples, the limiting member 300 switches to the first state under the action of a first electrical signal, and switches to the second state under the action of a second electrical signal, wherein the first electrical signal and the second electrical signal are different.

[0061] It should be noted that the limiting member 300 can also be a component that deforms under the influence of an electric field, magnetic field, light, or temperature. Correspondingly, electrical devices, magnetic devices, light-emitting devices, temperature-regulating devices, etc., can be disposed on the circuit board 400. For example, the limiting member 300 is a shape memory alloy (SMA) that deforms based on electrical properties.

[0062] The technical solution of this disclosure embodiment, by setting a circuit board 400, electrically connects the limiting member 300 to the circuit board 400, and the limiting member 300 can deform based on the electrical signal of the circuit board 400, thereby changing the shape of the limiting member 300 so that the limiting member 300 can switch between a first state and a second state. Compared with the solution of setting a driving member to drive the limiting member 300 to move, setting a deformable limiting member 300 has a simpler structure and is more convenient to assemble.

[0063] Reference Figure 4 and Figure 5 In some embodiments of this disclosure, the limiting member 300 deforms at least along a preset direction X, where the preset direction X is the direction of movement of the mover 210 relative to the housing 100. In a first state, the limiting member 300 has a first dimension L1 along the preset direction X, and in a second state, the limiting member 300 has a second dimension L2 along the preset direction X, where the first dimension L1 is greater than the second dimension L2.

[0064] In some examples, the limiting member 300 deforms in a single direction, for example, the limiting member 300 may extend or shorten in a preset direction X; in other examples, the limiting member 300 deforms in multiple directions, for example, the limiting member 300 may extend or shorten in a preset direction X, correspondingly, the limiting member 300 may contract or expand in a direction perpendicular to the preset direction X.

[0065] In some examples, the deformation direction of the limiting member 300 is parallel to the surface of the limiting member 300 that abuts against the mover 210. For example, the mover 210 moves along the cross-section of the housing 100, the limiting member 300 deforms perpendicular to the cross-section of the housing 100, and the sidewall of the limiting member 300 parallel to its deformation direction is used to abut against the mover 210.

[0066] In other examples, the deformation direction of the limiting member 300 is perpendicular to or forms an acute or obtuse angle with the surface of the limiting member 300 that abuts against the mover 210. For example, the mover 210 moves along the cross-section of the housing 100, the limiting member 300 deforms along the direction of movement of the mover 210, and the end face of the limiting member 300 perpendicular to its deformation is used to abut against the mover 210.

[0067] In some examples, the limiting member 300 has a first dimension L1 along the preset direction X in the first state, and a second dimension L2 along the preset direction X in the second state. The first dimension L1 is greater than the second dimension L2. That is, when limiting is required, the limiting member 300 elongates along the preset direction X to switch to the first state, and when limiting is not required, the limiting member 300 shortens along the preset direction X to switch to the second state.

[0068] In the technical solution of this embodiment, the limiting member 300 deforms along the movement direction of the mover 210 relative to the housing 100. In the first state where it can abut against the mover 210, the limiting member 300 has a relatively large first dimension L1 along the preset direction X so that the limiting member 300 limits the stroke of the mover 210. In the second state, the limiting member 300 has a relatively small second dimension L2 so that the limiting member 300 avoids the mover 210, making it easier for the mover 210 to obtain a larger stroke.

[0069] Reference Figure 2 , Figure 5 and Figure 6 In some embodiments of this disclosure, the circuit board 400 is disposed on the outside of the housing 100, the limiting member 300 penetrates the housing 100, one end of the limiting member 300 located outside the housing 100 is connected to the circuit board 400, and the other end of the limiting member 300 located inside the receiving cavity 110 is used to abut against the moving part 210.

[0070] In some examples, circuit board 400 is a rigid circuit board 400; in other examples, circuit board 400 is a flexible circuit board 400.

[0071] In some examples, the limiting member 300 abuts against the corresponding conductive part on the circuit board 400; in other examples, the limiting member 300 is welded or bonded to the corresponding conductive part on the circuit board 400.

[0072] In some examples, the circuit board 400 is located at the position of the limiting member 300, and multiple circuit boards 400 and multiple limiting members 300 can be set one-to-one; in other examples, the circuit board 400 is arranged around the housing 100, and the circuit board 400 corresponds to multiple limiting members 300 so that the circuit board 400 synchronously drives the deformation of multiple limiting members 300.

[0073] In the technical solution of this embodiment, the circuit board 400 is disposed on the outside of the housing 100, which facilitates the connection of the circuit board 400 with the external control circuit. The limiting member 300 is disposed through the housing 100, which facilitates the connection between the limiting member 300 and the circuit board 400.

[0074] Reference Figure 5 and Figure 6 In some embodiments of this disclosure, the housing 100 has a receiving hole 140, at least a portion of the limiting member 300 is disposed in the receiving hole 140, and the limiting member 300 is connected to at least one inner wall of the receiving hole 140.

[0075] In some examples, the limiting member 300 is positioned within the receiving hole 140 in the second state, while in the first state, the limiting member 300 partially extends out of the receiving hole 140 to abut against the mover 210; in other examples, the limiting member 300 in both the first and second states partially extends out of the receiving hole 140.

[0076] In some examples, the receiving hole 140 is a constant diameter hole; in other examples, the receiving hole 140 is a variable diameter hole, which may be a radially dimensionally gradient setting or a stepped hole.

[0077] In some examples, the receiving hole 140 has an opening on the inner wall of the receiving cavity 110; in other examples, the receiving hole 140 has openings on both the inner and outer sides of the housing 100, for example, when the limiting member 300 penetrates the housing 100.

[0078] In this embodiment, the radial cross-section of the receiving hole 140 can be a regular or irregular shape such as a circle, ellipse, triangle, square, rhombus, trapezoid, or hexagon. In some examples, the outer contour of the limiting member 300 matches the inner contour of the receiving hole 140, that is, they have the same contour; in other examples, the outer contour of the limiting member 300 is different from the inner contour of the receiving hole 140.

[0079] For example, the outer contour of the limiting member 300 is square, and the inner contour of the receiving hole 140 is also square. The outer contour of the limiting member 300 and the inner contour of the receiving hole 140 are adapted to each other, and both contours are non-circular. This can also limit the rotation of the limiting member 300 relative to the housing 100.

[0080] In some examples, the limiting member 300 is connected to the inner peripheral wall of the receiving hole 140, which is suitable for the limiting member 300 to move along the axial direction of the receiving hole 140, or for the limiting member 300 to deform along the axial direction of the receiving hole 140; in other examples, the limiting member 300 is connected to part of the inner wall of the receiving hole 140, for example, the cross-section of the receiving hole 140 is square, and the limiting member 300 is only connected to one side of its inner wall, which is suitable for the limiting member 300 to deform in multiple directions.

[0081] The technical solution of this disclosure, by opening a receiving hole 140 in the housing 100 and at least part of the limiting member 300 is disposed in the receiving hole 140, can improve space utilization and help to miniaturize the drive mechanism. On the other hand, it facilitates the connection between the limiting member 300 and the housing 100, and the receiving hole 140 can provide limiting and guiding for the deformation of the limiting member 300 so that the deformation direction of the limiting member 300 is more in line with the requirements.

[0082] Reference Figure 2 and Figure 5 In some embodiments of this disclosure, the limiting member 300 includes a limiting surface 310, which is set at an angle to a preset direction X. The preset direction X is the movement direction of the mover 210 relative to the housing 100. The limiting surface 310 can abut against the mover 210 to restrict the mover 210 from moving toward the limiting member 300.

[0083] In some examples, the extension direction of the limiting surface 310 is set perpendicular to the preset direction X. The limiting surface 310 can abut against the end face of the mover 210 in the preset direction X. The limiting surface 310 applies a force along the preset direction X to the mover 210, thereby restricting the movement of the mover 210.

[0084] In other examples, the extension direction of the limiting surface 310 forms an acute or obtuse angle with the preset direction X in order to adapt to the more complex surface of the mover 210.

[0085] In some other examples, the extension direction of the limiting surface 310 is set parallel to the preset direction X. When the limiting surface 310 abuts against the surface of the mover 210, the movement of the mover 210 relative to the housing 100 is restricted by friction.

[0086] For example, the mover 210 moves between the opposite side walls of the housing 100, and the limiting member 300 is disposed on the side wall of the housing 100, and the limiting surface 310 is perpendicular to the direction of movement of the mover 210 relative to the housing 100.

[0087] In the technical solution of this embodiment, the limiting surface 310 is set at an angle to the preset direction X, so that the limiting surface 310 can apply force in the direction of movement of the mover 210 relative to the housing 100, which has a better limiting effect.

[0088] Reference Figure 5 and Figure 6 In some embodiments of this disclosure, the contour of the limiting surface 310 is adapted to the corresponding surface of the mover 210, and when the limiting surface 310 abuts against the mover 210, the limiting surface 310 and the corresponding surface of the mover 210 are in contact.

[0089] In this embodiment of the present disclosure, the surface of the moving part 210 corresponding to the limiting surface 310 refers to the surface on which the moving part 210 can contact and abut against the limiting surface 310 when the limiting member 300 is in the first state.

[0090] In some examples, the corresponding surfaces of the limiting surface 310 and the mover 210 are both planar; in other examples, the corresponding surfaces of the limiting surface 310 and the mover 210 are both curved surfaces with the same curvature.

[0091] In the technical solution of this embodiment, the contour of the limiting surface 310 is adapted to the corresponding surface of the mover 210. When the limiting surface 310 abuts against the mover 210, the limiting surface 310 and the corresponding surface of the mover 210 are in contact, so that the interaction force between the limiting member 300 and the mover 210 is more dispersed, thereby improving the load-bearing capacity of both.

[0092] Reference Figure 2 and Figure 6 In some embodiments of this disclosure, the mover 210 moves relative to the housing 100 along at least two different preset directions X, where the preset direction X is the direction of movement of the mover 210 relative to the housing 100, and there are at least two limiting members 300, and at least one limiting member 300 is provided for each preset direction X.

[0093] In this embodiment of the disclosure, the preset direction X can be one or more (including two), and different preset directions X can be an acute angle, an obtuse angle or a right angle. Three or more preset directions X can be set on the same plane or on different planes.

[0094] In some examples, the mover 210 can move relative to the housing 100 along two preset directions X, namely the first direction X1 and the second direction X2. The first direction X1 and the second direction X2 are set perpendicularly, and the plane formed by the first direction X1 and the second direction X2 can be perpendicular to the setting direction of the housing 120 and the base 130.

[0095] In some examples, one limiting member 300 is provided for each preset direction X; in other examples, two limiting members 300 are provided for each preset direction X, and the two limiting members 300 are located on opposite sides of the mover 210.

[0096] In some examples, two limiting members 300 are provided for each of the first direction X1 and the second direction X2, and the four limiting members 300 are distributed in a square array. For example, the cross-section of the housing 100 is square, and the four limiting members 300 are provided one-to-one on the four side walls of the housing 100.

[0097] In the technical solution of this disclosure embodiment, the mover 210 moves relative to the housing 100 along at least two different preset directions X, making the movement of the mover 210 more flexible and producing richer driving effects. Each preset direction X is provided with at least one limiting member 300 so that the mover 210 can be limited in multiple directions, thereby coping with complex external vibrations.

[0098] Furthermore, this disclosure also provides a camera device, referring to... Figure 1 The camera device includes a base 500, a camera 600, and a drive mechanism according to the present disclosure. The camera 600 is movably connected to the base 500. The drive mechanism is disposed between the camera 600 and the base 500. The mover 210 of the drive mechanism is connected to the camera 600 and is used to drive the camera 600 to move relative to the base 500.

[0099] In some examples, the drive mechanism can drive the camera 600 to move relative to the base 500 along a preset plane. An additional drive component can also be provided between the drive mechanism and the camera 600, which drives the drive mechanism and the camera 600 to move along a direction perpendicular to the preset plane, so that the camera 600 can be adjusted in multiple directions.

[0100] In the technical solution of this embodiment, a limiting member 300 is provided in the driving mechanism of the camera device. The limiting member 300 can effectively limit the stroke of the mover 210 under the action of external vibration, reduce the amplitude of elastic deformation of the support 220 due to external vibration, reduce the possibility of aging failure of the support 220, and improve the service life of the driving mechanism.

[0101] Reference Figure 1 In some embodiments of this disclosure, the electronic device of this disclosure includes a drive mechanism or a camera device of this disclosure.

[0102] In some examples, the drive mechanism is located within the camera device, for example, for optical image stabilization (OIS). In other examples, the drive mechanism may be located in other devices within the electronic device, such as LiDAR, vibration feedback devices, etc. This disclosure does not limit this approach.

[0103] In the technical solution of this disclosure embodiment, a limiting member 300 is provided in the drive mechanism of the electronic device. The limiting member 300 can effectively limit the stroke of the mover 210 under the action of external vibration, reduce the amplitude of elastic deformation of the support 220 due to external vibration, reduce the possibility of aging failure of the support 220, and improve the service life of the drive mechanism.

[0104] In a specific embodiment of this disclosure, the camera device of the mobile phone is provided with a driving mechanism. The driving mechanism includes a housing 100, the housing 100 includes a base 130 of an outer shell 120, the outer shell 120 and the base 130 surround to form a receiving cavity 110, and a driving assembly 200 is provided in the receiving cavity 110. The driving assembly 200 includes a stator fixed to the outer shell 120, a support body 220 and a mover 210. The mover 210 is connected to the base 130 through four support bodies 220, and the support bodies 220 are suspension wires.

[0105] The outer casing 120 has a square structure. The mover 210 can move along the cross-section of the outer casing 120, specifically along the first direction X1 and the second direction X2. Each of the four side walls of the outer casing 120 has a receiving hole 140 that penetrates the side wall. The radial cross-section of the receiving hole 140 is square. Each receiving hole 140 is provided with a limiting member 300, which is also square. Two of the limiting members 300 are arranged along the first direction X1 on opposite sides of the mover 210, and the other two are arranged along the second direction X2 on opposite sides of the mover 210. The limiting members 300 are made of SMA material and can deform under the action of an electrical signal. The end face of the limiting member 300 facing the stator forms a limiting surface 310. The outer side of the outer casing 120 is surrounded by an annular circuit board 400. The circuit board 400 is connected to the control circuit. All four limiting members 300 are electrically connected to the circuit board 400.

[0106] When the circuit board 400 and the limiting member 300 are not energized (i.e., the control circuit does not control the drive mechanism to output power), the limiting member 300 is in an expanded first state. The limiting member 300 has a large size (e.g., the first size L1) along the corresponding preset direction X. Even if the mover 210 moves under external vibration, it can only produce a small stroke due to being limited by the limiting member 300, and the elastic deformation of the support 220 is also small. When the circuit board 400 and the limiting member 300 are energized (i.e., the control circuit controls the drive mechanism to output power), current flows through the circuit board 400 into the limiting member 300. The limiting member 300 deforms under the action of the electrical signal, and the limiting member 300 switches to a contracted second state. The limiting member 300 has a smaller size (e.g., the second size L2) along the corresponding preset direction X. The limiting member 300 does not limit the mover 210, and the mover 210 can have a large stroke under the action of the stator to meet the usage requirements. Correspondingly, in the event of a power outage, the limiter 300 switches from the second state to the first state.

[0107] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the claims.

[0108] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A driving mechanism, characterized in that, include: The housing includes a receiving cavity; A drive assembly is disposed within the receiving cavity. The drive assembly includes a mover and a support body. The mover is connected to the housing via the support body. The support body is elastically disposed, and the mover is capable of moving relative to the housing. A limiting member is disposed between the housing and the moving part, the limiting member having a switchable first state and a second state; in the first state, the limiting member can abut against the moving part, and the moving part has a first stroke relative to the housing; in the second state, the limiting member remains separated from the moving part, and the moving part has a second stroke relative to the housing, the second stroke being greater than the first stroke.

2. The driving mechanism according to claim 1, characterized in that, It also includes a circuit board electrically connected to the limiting member, the limiting member deforming based on electrical signals from the circuit board to switch between the first state and the second state.

3. The driving mechanism according to claim 2, characterized in that, The limiting member deforms at least along a preset direction, which is the direction of movement of the moving part relative to the housing. In the first state, the limiting member has a first dimension along the preset direction. In the second state, the limiting member has a second dimension along the preset direction. The first dimension is larger than the second dimension.

4. The driving mechanism according to claim 2, characterized in that, The circuit board is disposed on the outside of the housing, the limiting member penetrates the housing, one end of the limiting member located outside the housing is connected to the circuit board, and the other end of the limiting member located inside the receiving cavity is used to abut against the moving part.

5. The drive mechanism according to any one of claims 1 to 4, characterized in that, The housing has a receiving hole, at least a portion of the limiting member is disposed in the receiving hole, and the limiting member is connected to at least one inner wall of the receiving hole.

6. The drive mechanism according to any one of claims 1 to 4, characterized in that, The limiting member includes a limiting surface, which is set at an angle to a preset direction, which is the direction of movement of the moving part relative to the housing. The limiting surface can abut against the moving part to restrict the moving part from moving toward the limiting member.

7. The driving mechanism according to claim 6, characterized in that, The contour of the limiting surface is adapted to the corresponding surface of the mover, and when the limiting surface abuts against the mover, the limiting surface and the corresponding surface of the mover are in contact.

8. The drive mechanism according to any one of claims 1 to 4, characterized in that, The moving part moves relative to the housing in at least two different preset directions, the preset directions being the direction of movement of the moving part relative to the housing, and there are at least two limiting members, with at least one limiting member corresponding to each preset direction.

9. A camera device, characterized in that, include: Base; The camera is movably connected to the base; The driving mechanism according to any one of claims 1 to 8 is disposed between the camera and the base, wherein the moving part of the driving mechanism is connected to the camera, and the moving part is used to drive the camera to move relative to the base.

10. An electronic device, characterized in that, include: The driving mechanism according to any one of claims 1 to 8, or the camera device according to claim 9.

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