Camera module, clutch assembly and electronic device

Abstract

The application discloses a camera module, a clutch assembly and electronic equipment. The camera module comprises a telescopic lens, a driving member, a clutch device and a movable assembly. The clutch device comprises a first gear and a second gear. The first gear and the second gear are coaxially arranged. One end of the first gear is provided with a first mounting hole. One end of the second gear is provided with a second mounting hole. The first mounting hole and the second mounting hole are opposite. The movable assembly comprises a pushing member and a connecting member. The pushing member is arranged in the first mounting hole. One end of the pushing member is provided with the connecting member. When the clutch device is in a linkage state, at least part of the connecting member is arranged in the second mounting hole. The first gear and the second gear rotate synchronously. When the clutch device is in a separation state, the connecting member is separated from the second mounting hole. The second gear rotates relative to the first gear. The telescopic lens comprises a sleeve. The driving member is connected with the first gear. The second gear is connected with the sleeve. When the driving member is in a power-off state, the sleeve drives the second gear to rotate relative to the first gear.

Description

Technical Field

[0001] This application belongs to the field of electronic technology, specifically relating to a camera module, a clutch assembly, and an electronic device. Background Technology

[0002] Photography and video recording have become important functions of electronic devices such as smartphones. With the rapid iteration of camera hardware, the shooting capabilities of cameras have been greatly improved, and they now possess the capabilities of professional cameras, thus reducing the frequency of use of professional cameras.

[0003] In existing technology, since professional camera lenses can extend and retract for focusing, a camera structure with telephoto (telephoto lens) functionality has been developed for application in mobile phones. Referring to the existing telephoto structure of professional cameras, the existing telephoto camera has a groove pre-reserved on the lifting sleeve, and a corresponding slider (pin) is designed on the adjacent sleeve. The slider (pin) slides in the groove, thereby driving the sleeve to rise and fall.

[0004] However, since mobile phones are essential items in people's daily lives and are usually held in their hands, the probability of them being dropped is much greater than that of cameras. When a camera extends and is dropped, the existing retractable camera has poor protection capabilities and is easily damaged. Summary of the Invention

[0005] This application aims to provide a camera module, clutch assembly, and electronic device that can solve the problem of easy damage when the camera extends and falls.

[0006] To solve the above-mentioned technical problems, this application is implemented as follows:

[0007] In a first aspect, embodiments of this application propose a camera module, including: a telescopic lens, a driving component, and a clutch device;

[0008] The clutch device includes a first gear and a second gear, which are coaxially arranged. The first gear has a first mounting hole at the end facing the second gear, and the second gear has a second mounting hole at the end facing the first gear. The first mounting hole and the second mounting hole are arranged opposite to each other.

[0009] The clutch device further includes a movable component, which includes a pusher and a connecting member. The pusher is disposed in the first mounting hole, and the connecting member is connected to one end of the pusher facing the second mounting hole.

[0010] The clutch device has a linked state and a disengaged state. When the clutch device is in the linked state, at least part of the connecting member is located in the second mounting hole, and the first gear and the second gear rotate synchronously. When the clutch device is in the disengaged state, the connecting member is disengaged from the second mounting hole, and the second gear rotates relative to the first gear.

[0011] The telescopic lens includes a sleeve, the driving component is connected to the first gear, and the second gear is connected to the sleeve;

[0012] When the drive component is de-energized, the sleeve can drive the second gear to rotate relative to the first gear.

[0013] According to an embodiment of this application, a camera module is provided, wherein the pushing member is an elastic member, and the elastic member has a first state and a second state;

[0014] When the first gear and the second gear are relatively stationary, the elastic element is in the first state, and under the action of the elastic element, at least part of the connecting member is located in the second mounting hole;

[0015] When the drive component is de-energized, the sleeve can drive the second gear to press the connecting component, and the connecting component can separate from the second mounting hole and enter the first mounting hole, with the elastic element in the second state.

[0016] According to an embodiment of this application, a camera module is provided, wherein the connecting member is a ball bearing, and both the first mounting hole and the second mounting hole are adapted to the ball bearing.

[0017] According to an embodiment of this application, in a camera module, the volume of the second mounting hole is less than or equal to the target volume;

[0018] The target volume is half the volume of the ball.

[0019] According to an embodiment of this application, a camera module is provided in which there are multiple first mounting holes and multiple second mounting holes, and the multiple first mounting holes and multiple second mounting holes correspond one-to-one.

[0020] According to an embodiment of this application, a camera module is provided in which a receiving space is recessed at one end of the second gear facing the first gear, and a second mounting hole is provided on the bottom wall of the receiving space, and the end of the first gear facing the second gear abuts against the bottom wall of the receiving space.

[0021] According to an embodiment of this application, a camera module is provided, and the clutch device further includes a cover plate. A protrusion is formed on one end of the first gear facing the second gear in an axial direction. The protrusion passes through the second gear. The cover plate is disposed on one end of the protrusion away from the first gear, so that the second gear is clamped between the cover plate and the first gear.

[0022] According to an embodiment of this application, a camera module is provided, wherein the clutch device further includes a friction-reducing ring, which is sleeved on the protrusion and sandwiched between the cover plate and the second gear.

[0023] Secondly, this application provides a clutch device, including: a first gear and a second gear, the first gear and the second gear being coaxially arranged, the first gear having a first mounting hole at one end facing the second gear, the second gear having a second mounting hole at one end facing the first gear, and the first mounting hole and the second mounting hole being arranged opposite to each other;

[0024] The clutch device further includes a movable component, which includes a pusher and a connecting member. The pusher is disposed in the first mounting hole, and the connecting member is connected to one end of the pusher facing the second mounting hole.

[0025] The clutch device has a linked state and a disengaged state. When the clutch device is in the linked state, at least part of the connecting member is located in the second mounting hole, and the first gear and the second gear rotate synchronously. When the clutch device is in the disengaged state, the connecting member disengages from the second mounting hole, and the second gear rotates relative to the first gear.

[0026] According to an embodiment of this application, a clutch device is provided, the clutch device further includes a cover plate, a protrusion is formed on one end of the first gear facing the second gear in an axial direction, the protrusion passes through the second gear, and the cover plate is disposed on one end of the protrusion away from the first gear, so that the second gear is clamped between the cover plate and the first gear.

[0027] Thirdly, embodiments of this application provide an electronic device, including: a housing and the aforementioned camera module, wherein the camera module is disposed in the housing.

[0028] In the embodiments of this application, when the driving component is powered on, it drives the first gear to rotate, and the second gear rotates along with the first gear. Under the drive of the second gear, the sleeve can rotate accordingly, thereby extending or shortening the telescopic lens. When the driving component is powered off and the sleeve rotates, the sleeve can drive the second gear to rotate relative to the first gear, meaning the first gear is stationary at this time. A clutch device is provided between the sleeve and the driving component, converting the impact of external forces on the camera module into the kinetic energy of the second gear's idle rotation, thus placing the transmission mechanism in the telescopic lens in a non-stressed state. This solves the transmission failure caused by external forces when the camera module is extended, thereby improving the reliability of the camera module.

[0029] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0030] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0031] Figure 1 This is an exploded view of the clutch assembly according to an embodiment of this application;

[0032] Figure 2 This is one of the cross-sectional views of the clutch assembly according to an embodiment of this application;

[0033] Figure 3 This is a second cross-sectional view of the clutch assembly according to an embodiment of this application;

[0034] Figure 4 This is a schematic diagram of the structure of the first gear according to an embodiment of this application;

[0035] Figure 5 This is a schematic diagram of the structure of the second gear according to an embodiment of this application;

[0036] Figure 6 This is a schematic diagram of the structure of a camera module according to an embodiment of this application;

[0037] Figure 7 This is a partial structural schematic diagram of a camera module according to an embodiment of this application;

[0038] Figure label:

[0039] 1. Clutch device; 11. First gear; 12. Second gear; 13. Elastic element; 14. Ball bearing; 15. Cover plate; 16. Anti-friction ring; 17. Second mounting hole; 18. Protrusion; 19. First mounting hole; 2. Driving element; 3. First transmission element; 4. Second transmission element; 5. Sleeve. Detailed Implementation

[0040] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0041] In the description of this application, it should be understood that the features referred to by the terms "first" and "second" may explicitly or implicitly include one or more of those features.

[0042] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0043] Conventional telescopic lenses utilize a grooved flange structure to design the lens in multiple stages to achieve its telescopic function. For example, a three-stage telescopic lens:

[0044] When the camera is impacted, the first-stage sleeve moves vertically downward under the impact force. The flange on the first-stage sleeve engages with the oblique groove of the second-stage sleeve, causing the second-stage sleeve to rotate and move downward (the third-stage sleeve remains fixed, and the oblique groove on the third-stage sleeve engages with the flange of the second-stage sleeve, restricting the second-stage sleeve to only move downward).

[0045] When the secondary sleeve rotates downward, it also drives the secondary driven sleeve to move downward (the tertiary sleeve remains fixed, and the vertical groove on the tertiary sleeve cooperates with the secondary driven sleeve, constraining the secondary driven sleeve to only make vertical movements).

[0046] The downward movement of the secondary sleeve ultimately drives the active sleeve to rotate (the flange on the secondary sleeve engages with the inclined groove of the active sleeve);

[0047] The camera gear rack and drive sleeve are integrated into a single design. When impacted, the power system stops operating, the drive sleeve cannot rotate, and all sleeves become immobile. At this point, the flanges and grooves of all sleeves are forced together by shear force under impact, making the sleeve's transmission structure susceptible to damage and failure.

[0048] To solve the above problems, such as Figure 6 and Figure 7 As shown, the camera module of this application embodiment includes: a telescopic lens, a drive unit 2, and a clutch device 1.

[0049] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the clutch device 1 includes a first gear 11 and a second gear 12. The first gear 11 can be a helical gear and the second gear 12 can be a spur gear. The first gear 11 and the second gear 12 are coaxially arranged. The first gear 11 has a first mounting hole 19 at one end facing the second gear 12 and the second gear 12 has a second mounting hole 17 at one end facing the first gear 11. The first mounting hole 19 and the second mounting hole 17 are arranged opposite to each other.

[0050] The clutch device 1 also includes a movable component, which includes a pusher and a connecting member. The pusher is disposed in the first mounting hole 19, and the end of the pusher facing the second mounting hole 17 is connected to the connecting member.

[0051] The end of the pusher that is away from the second mounting hole 17 is connected to the bottom of the first mounting hole 19, or the pusher is movably disposed in the first mounting hole 19.

[0052] The clutch device 1 has a linked state and a disengaged state. When the clutch device 1 is in the linked state, at least part of the connecting member is located in the second mounting hole 17, and the first gear 11 and the second gear 12 rotate synchronously. When the clutch device 1 is in the disengaged state, the connecting member disengages from the second mounting hole 17, and the second gear 12 rotates relative to the first gear 11.

[0053] For example, when the clutch device 1 is in the engaged state, a part of the connecting member is located in the second mounting hole 17, and the other part of the connecting member is located in the first mounting hole 19, and the first gear 11 and the second gear 12 can rotate synchronously; when the clutch device 1 is in the disengaged state, the connecting member is located in the first mounting hole 19, and the second gear 12 can rotate relative to the first gear 11.

[0054] The telescopic lens includes a sleeve 5, a drive component 2 connected to a first gear 11, and a second gear 12 connected to the sleeve 5.

[0055] It is particularly important to note that the sleeve 5 is equivalent to the active sleeve. That is to say, the side of the sleeve 5 is provided with a second transmission component 4. The second transmission component 4 can be a gear rack, which is an arc-shaped structure. The second gear 12 meshes with the gear rack. The driving component 2 is connected to the first gear 11 through the first transmission component 3. The driving component 2 can be a drive motor, the first transmission component 3 can be a worm gear, and the first gear 11 can be a turbine.

[0056] When the drive unit 2 is de-energized, the sleeve 5 can drive the second gear 12 to rotate relative to the first gear 11.

[0057] In this embodiment, when the drive unit 2 is powered on, it drives the first gear 11 to rotate, and the second gear 12 rotates along with the first gear 11. Under the drive of the second gear 12, the sleeve 5 can rotate accordingly, thereby extending or shortening the telescopic lens. When the drive unit 2 is powered off and the sleeve 5 rotates, the sleeve 5 can drive the second gear 12 to rotate relative to the first gear 11, meaning that the first gear 11 is stationary at this time. A clutch device 1 is provided between the sleeve 5 and the drive unit 2. The impact of external force on the camera module is converted into the kinetic energy of the second gear 12 spinning freely and released, so that the transmission mechanism in the telescopic lens is in a non-stressed state. This can solve the transmission failure caused by external force when the camera module is extended, thereby improving the reliability of the camera module.

[0058] In optional embodiments, such as Figure 1 , Figure 2 and Figure 3 As shown, the pushing member is an elastic member 13. The elastic member 13 has a first state and a second state. When the first gear 11 and the second gear 12 are relatively stationary, the elastic member 13 is in the first state. Under the action of the elastic member 13, at least part of the connecting member is located in the second mounting hole 17.

[0059] Among them, the elastic element 13 can be a spring. When the first gear 11 and the second gear 12 are relatively stationary, the elastic element 13 is in a compressed state. Under the action of the elastic element 13, a part of the connecting member is located in the second mounting hole 17, and the other part of the connecting member is located in the first mounting hole 19.

[0060] When the drive component 2 is de-energized, the sleeve 5 can drive the second gear 12 to press the connecting component, and the connecting component can separate from the second mounting hole 17 and enter the first mounting hole 19, with the elastic component 13 in the second state.

[0061] In other words, under abnormal operating conditions, when the telescopic lens is extended and subjected to a drop impact, a large impact force is suddenly generated between the second transmission component 4 and the second gear 12. At this time, the drive component 2 is not activated, and the first transmission component 3 and the first gear 11 remain stationary due to self-locking, resulting in a large torque between the first gear 11 and the second gear 12. When the torque exceeds the critical torque, the second gear 12 compresses the connecting component, and the connecting component is completely squeezed into the first mounting hole 19. The second gear 12 can rotate relative to the first gear 11. At this time, the elastic component 13 is still in a compressed state until the connecting component is pushed into the second mounting hole 17 again by the elastic component 13.

[0062] In this embodiment, the pusher is set as an elastic member 13, which has a simple structure and can realize the clutch device 1's engagement and disengagement states without external driving force.

[0063] In an optional embodiment, when the drive member 2 is de-energized and the sleeve 5 is rotating, the connecting member disengages from the second mounting hole 17 under the action of the pusher, so that the sleeve 5 can drive the second gear 12 to rotate relative to the first gear 11.

[0064] In an optional embodiment, to facilitate switching between the clutch device 1 and the disengaged state, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the connecting component is a ball bearing 14, and both the first mounting hole 19 and the second mounting hole 17 are adapted to the ball bearing 14.

[0065] It should be noted that both the first mounting hole 19 and the second mounting hole 17 are spherical grooves, and the diameter of the ball 14 should be equal to the diameter of the spherical groove.

[0066] In this embodiment, when the drive unit 2 is powered on, the drive unit 2 drives the first gear 11 to rotate, and the elastic member 13 is in a compressed state. Under the action of the elastic member 13, a part of the ball bearing 14 is located in the second mounting hole 17, and the other part of the ball bearing 14 is located in the first mounting hole 19. The first gear 11 and the second gear 12 rotate synchronously. Under the drive of the second gear 12, the sleeve 5 can rotate accordingly, thereby realizing the extension or retraction of the telescopic lens. Under abnormal working conditions, when the telescopic lens is in the extended state and is subjected to a drop impact, a large impact force is suddenly generated between the second transmission member 4 and the second gear 12. At this time, the drive unit 2 is not started, and the first transmission member 3 and the first gear 11 are stationary due to self-locking, resulting in a large torque between the first gear 11 and the second gear 12. When the torque exceeds the critical torque, the second gear 12 squeezes the ball 14, and the ball 14 is completely squeezed into the first mounting hole 19. The second gear 12 can rotate relative to the first gear 11. At this time, the elastic element 13 is still in a compressed state until the ball 14 is pushed into the second mounting hole 17 again by the elastic element 13.

[0067] In an optional embodiment, in order to achieve a situation where, when the torque exceeds the critical torque, the second gear 12 squeezes the ball 14, and the ball 14 can separate from the second mounting hole 17 and enter the first mounting hole 19, the volume of the second mounting hole 17 is less than or equal to the target volume.

[0068] The target volume is half the volume of the ball bearing 14.

[0069] For example, when the first gear 11 and the second gear 12 are relatively stationary, half of the ball 14 is located in the second mounting hole 17, and half of the ball 14 is located in the first mounting hole 19.

[0070] It should be noted that the critical torque between the first gear 11 and the second gear 12 is mainly related to the number of balls 14, the diameter of the balls 14, the stiffness of the elastic element 13, the preload of the elastic element 13, and the angle of the spherical groove. The angle of the spherical groove can be quantified by the volume of the spherical groove.

[0071] It is understandable that, in order for the camera module to operate normally, the critical torque between the first gear 11 and the second gear 12 should be greater than the total resistance distance of the telescopic lens.

[0072] In an optional embodiment, in order to ensure the stability of the movement of the first gear 11 and the second gear 12, there are multiple first mounting holes 19 and multiple second mounting holes 17, with each of the multiple first mounting holes 19 and multiple second mounting holes 17 corresponding one-to-one.

[0073] The number of the first mounting hole 19 and the second mounting hole 17 can be selected according to the number of balls 14, and no specific limitation is made here.

[0074] like Figure 4 and Figure 5 As shown, there are five first mounting holes 19 and five second mounting holes 17. The five first mounting holes 19 are arranged evenly in sequence along the circumferential direction of the first gear 11, and the five second mounting holes 17 are arranged evenly in sequence along the circumferential direction of the second gear 12. Correspondingly, there are five balls 14 and five elastic elements 13.

[0075] In optional embodiments, to make the clutch device 1 more compact and achieve miniaturization, such as... Figure 5 As shown, the second gear 12 has a recessed receiving space at one end facing the first gear 11, and the second mounting hole 17 is provided on the bottom wall of the receiving space. The end of the first gear 11 facing the second gear 12 abuts against the bottom wall of the receiving space.

[0076] The portion of the first gear 11 located within the accommodating space does not have teeth. Furthermore, the depth of the accommodating space can be selected according to actual needs and is not specifically limited here.

[0077] In optional embodiments, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the clutch device 1 also includes a cover plate 15. The first gear 11 extends axially towards the end of the second gear 12 and forms a protrusion 18. The protrusion 18 passes through the second gear 12. The second gear 12 is provided with a mounting hole for the protrusion 18 to pass through. The cover plate 15 is provided at the end of the protrusion 18 away from the first gear 11, so that the second gear 12 is sandwiched between the cover plate 15 and the first gear 11.

[0078] In this embodiment, to ensure the normal operation of the clutch device 1, the elastic member 13 should always remain in a compressed state. By connecting the cover plate 15 to the protrusion 18, the end of the first gear 11 facing the second gear 12 can abut against the bottom wall of the accommodating space, thereby limiting the movement of the elastic member 13.

[0079] The connection between the cover plate 15 and the protrusion 18 can be either a threaded connection or a pin connection; the specific connection method is not limited here.

[0080] In optional embodiments, such as Figure 1 , Figure 2 and Figure 3As shown, the clutch device 1 also includes a friction-reducing ring 16, which is sleeved on the protrusion 18 and sandwiched between the cover plate 15 and the second gear 12.

[0081] It should be noted that when the ball bearing 14 separates from the second mounting hole 17 and enters the first mounting hole 19, that is, when the first gear 11 and the second gear 12 are "disengaged," the first gear 11 and the second gear 12 can rotate relative to each other. In order to ensure the normal operation of the second gear 12 in the "disengaged" state, a friction-reducing ring 16 is arranged between the second gear 12 and the cover plate 15 to reduce the friction between the second gear 12 and the cover plate 15.

[0082] In order to ensure the miniaturization of the clutch device 1 and reduce the space occupied, the second gear 12 is provided with a storage space at the end opposite to the first gear 11. At this time, the cover plate 15 and the anti-friction ring 16 can both be placed in the storage space.

[0083] In addition, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown in the figure, this application embodiment also provides a clutch device 1, including: a first gear 11 and a second gear 12. The first gear 11 can be a helical gear, and the second gear 12 can be a spur gear. The first gear 11 and the second gear 12 are coaxially arranged. The first gear 11 is provided with a first mounting hole 19 at one end facing the second gear 12, and the second gear 12 is provided with a second mounting hole 17 at one end facing the first gear 11. The first mounting hole 19 and the second mounting hole 17 are arranged opposite to each other.

[0084] The clutch device 1 also includes a movable component, which includes a pusher and a connecting member. The pusher is disposed in the first mounting hole 19, and the end of the pusher facing the second mounting hole 17 is connected to the connecting member.

[0085] The end of the pusher that is away from the second mounting hole 17 is connected to the bottom of the first mounting hole 19, or the pusher is movably disposed in the first mounting hole 19.

[0086] The clutch device 1 has a linked state and a disengaged state. When the clutch device 1 is in the linked state, at least part of the connecting member is located in the second mounting hole 17, and the first gear 11 and the second gear 12 rotate synchronously. When the clutch device 1 is in the disengaged state, the connecting member disengages from the second mounting hole 17, and the second gear 12 rotates relative to the first gear 11.

[0087] For example, when the clutch device 1 is in the engaged state, a part of the connecting member is located in the second mounting hole 17, and the other part of the connecting member is located in the first mounting hole 19, and the first gear 11 and the second gear 12 can rotate synchronously; when the clutch device 1 is in the disengaged state, the connecting member is located in the first mounting hole 19, and the second gear 12 can rotate relative to the first gear 11.

[0088] In this embodiment, by adjusting the position of the connecting member, the clutch device 1 can switch between a linked state and a disengaged state. When the first gear 11 and the second gear 12 need to rotate synchronously, a part of the connecting member is located in the second mounting hole 17, and the other part of the connecting member is located in the first mounting hole 19. When the second gear 12 needs to rotate relative to the first gear 11, the connecting member disengages from the second mounting hole 17.

[0089] In optional embodiments, such as Figure 1 , Figure 2 and Figure 3 As shown, the pushing member is an elastic member 13. The elastic member 13 has a first state and a second state. When the first gear 11 and the second gear 12 are relatively stationary, the elastic member 13 is in the first state. Under the action of the elastic member 13, at least part of the connecting member is located in the second mounting hole 17.

[0090] Among them, the elastic element 13 can be a spring. When the first gear 11 and the second gear 12 are relatively stationary, the elastic element 13 is in a compressed state. Under the action of the elastic element 13, a part of the connecting member is located in the second mounting hole 17, and the other part of the connecting member is located in the first mounting hole 19.

[0091] When the first gear 11 is stationary and the external driving force drives the second gear 12, the second gear 12 presses against the connecting member, and the connecting member can separate from the second mounting hole 17 and enter the first mounting hole 19, and the elastic member 13 is in the second state.

[0092] In other words, when the first gear 11 is stationary and the external driving force drives the second gear 12, a large torque can be generated between the first gear 11 and the second gear 12. When the torque exceeds the critical torque, the second gear 12 squeezes the connecting member, and the connecting member is completely squeezed into the first mounting hole 19. The second gear 12 can rotate relative to the first gear 11. At this time, the elastic member 13 is still in a compressed state until the connecting member is pushed into the second mounting hole 17 by the elastic member 13 again.

[0093] In this embodiment, the pusher is set as an elastic member 13, which has a simple structure and can realize the clutch device 1 in both the clutch and disengagement states.

[0094] In an optional embodiment, to facilitate switching between the clutch device 1 and the disengaged state, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the connecting component is a ball bearing 14, and both the first mounting hole 19 and the second mounting hole 17 are adapted to the ball bearing 14.

[0095] It should be noted that both the first mounting hole 19 and the second mounting hole 17 are spherical grooves, and the diameter of the ball 14 should be equal to the diameter of the spherical groove.

[0096] In this embodiment, when the first gear 11 and the second gear 12 are relatively stationary, the elastic element 13 is in a compressed state. Under the action of the elastic element 13, a part of the ball 14 is located in the second mounting hole 17, and the other part of the ball 14 is located in the first mounting hole 19. The first gear 11 and the second gear 12 rotate synchronously. A large torque is generated between the first gear 11 and the second gear 12. When the torque exceeds the critical torque, the second gear 12 squeezes the ball 14, and the ball 14 is completely squeezed into the first mounting hole 19. The second gear 12 can rotate relative to the first gear 11. At this time, the elastic element 13 is still in a compressed state until the ball 14 is pushed into the second mounting hole 17 again by the elastic element 13.

[0097] In an optional embodiment, in order to achieve a situation where, when the torque exceeds the critical torque, the second gear 12 squeezes the ball 14, and the ball 14 can separate from the second mounting hole 17 and enter the first mounting hole 19, the volume of the second mounting hole 17 is less than or equal to the target volume.

[0098] The target volume is half the volume of the ball bearing 14.

[0099] For example, when the first gear 11 and the second gear 12 are relatively stationary, half of the ball 14 is located in the second mounting hole 17, and half of the ball 14 is located in the first mounting hole 19.

[0100] It should be noted that the critical torque between the first gear 11 and the second gear 12 is mainly related to the number of balls 14, the diameter of the balls 14, the stiffness of the elastic element 13, the preload of the elastic element 13, and the angle of the spherical groove. The angle of the spherical groove can be quantified by the volume of the spherical groove.

[0101] In an optional embodiment, in order to ensure the stability of the movement of the first gear 11 and the second gear 12, there are multiple first mounting holes 19 and multiple second mounting holes 17, with each of the multiple first mounting holes 19 and multiple second mounting holes 17 corresponding one-to-one.

[0102] The number of the first mounting hole 19 and the second mounting hole 17 can be selected according to the number of balls 14, and no specific limitation is made here.

[0103] like Figure 4 and Figure 5 As shown, there are five first mounting holes 19 and five second mounting holes 17. The five first mounting holes 19 are arranged evenly in sequence along the circumferential direction of the first gear 11, and the five second mounting holes 17 are arranged evenly in sequence along the circumferential direction of the second gear 12. Correspondingly, there are five balls 14 and five elastic elements 13.

[0104] In optional embodiments, to make the clutch device 1 more compact and achieve miniaturization, such as... Figure 5 As shown, the second gear 12 has a recessed receiving space at one end facing the first gear 11, and the second mounting hole 17 is provided on the bottom wall of the receiving space. The end of the first gear 11 facing the second gear 12 abuts against the bottom wall of the receiving space.

[0105] The portion of the first gear 11 located within the accommodating space does not have teeth. Furthermore, the depth of the accommodating space can be selected according to actual needs and is not specifically limited here.

[0106] In optional embodiments, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the clutch device 1 also includes a cover plate 15. The first gear 11 extends axially towards the end of the second gear 12 and forms a protrusion 18. The protrusion 18 passes through the second gear 12. The second gear 12 is provided with a mounting hole for the protrusion 18 to pass through. The cover plate 15 is provided at the end of the protrusion 18 away from the first gear 11, so that the second gear 12 is sandwiched between the cover plate 15 and the first gear 11.

[0107] In this embodiment, to ensure the normal operation of the clutch device 1, the elastic member 13 should always remain in a compressed state. By connecting the cover plate 15 to the protrusion 18, the end of the first gear 11 facing the second gear 12 can abut against the bottom wall of the accommodating space, thereby limiting the movement of the elastic member 13.

[0108] The connection between the cover plate 15 and the protrusion 18 can be either a threaded connection or a pin connection; the specific connection method is not limited here.

[0109] In optional embodiments, such as Figure 1 , Figure 2 and Figure 3As shown, the clutch device 1 also includes a friction-reducing ring 16, which is sleeved on the protrusion 18 and sandwiched between the cover plate 15 and the second gear 12.

[0110] It should be noted that when the ball bearing 14 separates from the second mounting hole 17 and enters the first mounting hole 19, that is, when the first gear 11 and the second gear 12 are "disengaged," the first gear 11 and the second gear 12 can rotate relative to each other. In order to ensure the normal operation of the second gear 12 in the "disengaged" state, a friction-reducing ring 16 is arranged between the second gear 12 and the cover plate 15 to reduce the friction between the second gear 12 and the cover plate 15.

[0111] In order to ensure the miniaturization of the clutch device 1 and reduce the space occupied, the second gear 12 is provided with a storage space at the end opposite to the first gear 11. At this time, the cover plate 15 and the anti-friction ring 16 can both be placed in the storage space.

[0112] In addition, this application embodiment also provides an electronic device, including: a housing and the above-mentioned camera module, wherein the camera module is disposed in the housing.

[0113] Specifically, since the electronic device includes the camera module as described above, and the specific structure of the camera module is as described in the above embodiments, the electronic device shown in this embodiment includes all the technical solutions of the above embodiments, and therefore has at least all the beneficial effects achieved by all the above technical solutions, which will not be described in detail here.

[0114] Of course, in this application embodiment, electronic devices include, but are not limited to, mobile phones, tablets, laptops, PDAs, vehicle terminals, wearable devices, and pedometers. This application embodiment does not specifically limit the specific type of electronic device.

[0115] In the description of this specification, references to terms such as "optional implementation" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0116] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A camera module, characterized in that, include: Telescopic lens, drive components, and clutch mechanism; The clutch device includes a first gear and a second gear, which are coaxially arranged. The first gear has a first mounting hole at the end facing the second gear, and the second gear has a second mounting hole at the end facing the first gear. The first mounting hole and the second mounting hole are arranged opposite to each other. The clutch device further includes a movable component, which includes a pusher and a connecting component. The pusher is disposed in the first mounting hole, and the connecting component is connected to one end of the pusher facing the second mounting hole. The clutch device has a linked state and a disengaged state. When the clutch device is in the linked state, at least part of the connecting member is located in the second mounting hole, and the first gear and the second gear rotate synchronously. When the clutch device is in the disengaged state, the connecting member is disengaged from the second mounting hole, and the second gear rotates relative to the first gear. The telescopic lens includes a sleeve, the driving component is connected to the first gear, and the second gear is connected to the sleeve; When the drive component is de-energized, the sleeve can drive the second gear to rotate relative to the first gear.

2. The camera module according to claim 1, characterized in that, The pushing element is an elastic element, and the elastic element has a first state and a second state; When the first gear and the second gear are relatively stationary, the elastic element is in the first state, and under the action of the elastic element, at least part of the connecting member is located in the second mounting hole; When the drive component is de-energized, the sleeve can drive the second gear to press the connecting component, and the connecting component can separate from the second mounting hole and enter the first mounting hole, with the elastic element in the second state.

3. The camera module according to claim 1 or 2, characterized in that, The connecting component is a ball bearing, and both the first mounting hole and the second mounting hole are adapted to the ball bearing.

4. The camera module according to claim 3, characterized in that, The volume of the second mounting hole is less than or equal to the target volume; The target volume is half the volume of the ball.

5. The camera module according to claim 1, characterized in that, There are multiple first mounting holes and multiple second mounting holes, and the multiple first mounting holes and multiple second mounting holes correspond one-to-one.

6. The camera module according to claim 1, characterized in that, The second gear has a recessed receiving space at one end facing the first gear, and the second mounting hole is located on the bottom wall of the receiving space. The end of the first gear facing the second gear abuts against the bottom wall of the receiving space.

7. The camera module according to claim 1, characterized in that, The clutch device further includes a cover plate. The first gear extends axially towards the end facing the second gear and forms a protrusion. The protrusion passes through the second gear. The cover plate is located at the end of the protrusion away from the first gear, so that the second gear is sandwiched between the cover plate and the first gear.

8. The camera module according to claim 7, characterized in that, The clutch device further includes a friction-reducing ring, which is sleeved on the protrusion and sandwiched between the cover plate and the second gear.

9. An electronic device, characterized in that, It includes: a housing and a camera module according to any one of claims 1 to 8, wherein the camera module is disposed in the housing.

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