Camera module, clutch and electronic equipment

Abstract

This application discloses a camera module, a clutch device, and an electronic device. The camera module includes a telescopic lens, a driving component, and a clutch device. The clutch device includes a driving assembly, a first gear, a rotating shaft, a pressing assembly, and a ball bearing. The driving assembly is located at the first end of the rotating shaft and drives the rotating shaft to rotate. The first gear has a through hole at its shaft center, through which the rotating shaft passes. The pressing assembly is sleeved on the second end of the rotating shaft, and the ball bearing is located between the pressing assembly and the first gear. The pressing assembly abuts against the ball bearing, and the first gear has a first receiving groove. The clutch device has a linked state and a disengaged state. When the clutch device is in the linked state, the ball bearing is located in the first receiving groove, and when the rotating shaft rotates, the pressing assembly drives the first gear to rotate through the ball bearing. When the clutch device is in the disengaged state, the ball bearing disengages from the first receiving groove, and the rotating shaft rotates relative to the first gear. The first gear is connected to the telescopic lens, and the driving component is connected to the driving assembly.

Description

Technical Field

[0001] This application belongs to the field of electronic technology, specifically relating to a camera module, a clutch device, 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 device, 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 drive assembly, a first gear, a rotating shaft, a pressing assembly, and ball bearings;

[0009] The drive assembly is disposed at the first end of the rotating shaft, and the drive assembly drives the rotating shaft to rotate. A through hole is provided at the shaft center of the first gear, and the rotating shaft passes through the through hole.

[0010] The pressing assembly is sleeved on the second end of the rotating shaft, the ball is disposed between the pressing assembly and the first gear, the pressing assembly abuts against the ball, and the first gear is provided with a first receiving groove;

[0011] The clutch device has a linked state and a disengaged state. When the clutch device is in the linked state, the ball is located in the first receiving groove, and when the rotating shaft rotates, the pressing assembly drives the first gear to rotate through the ball.

[0012] When the clutch is disengaged, the ball disengages from the first receiving groove, and the rotating shaft rotates relative to the first gear.

[0013] The first gear is connected to the telescopic lens, and the driving component is connected to the driving assembly.

[0014] Secondly, embodiments of this application provide a clutch device, including: a drive assembly, a first gear, a rotating shaft, a pressing assembly, and ball bearings;

[0015] The drive assembly is disposed at the first end of the rotating shaft, and the drive assembly drives the rotating shaft to rotate. A through hole is provided at the shaft center of the first gear, and the rotating shaft passes through the through hole.

[0016] The pressing assembly is sleeved on the second end of the rotating shaft, the ball is disposed between the pressing assembly and the first gear, the pressing assembly abuts against the ball, and the first gear is provided with a first receiving groove;

[0017] The clutch device has a linked state and a disengaged state. When the clutch device is in the linked state, the ball is located in the first receiving groove, and when the rotating shaft rotates, the pressing assembly drives the first gear to rotate through the ball.

[0018] When the clutch is disengaged, the ball disengages from the first receiving groove, and the shaft rotates relative to the first gear.

[0019] Secondly, 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.

[0020] In the embodiments of this application, when the driving component is powered on, it drives the driving assembly to rotate, which in turn drives the rotating shaft to rotate. The pressing assembly drives the first gear to rotate via ball bearings. In other words, the first gear rotates with the rotating shaft, and under the drive of the first gear, the sleeve rotates accordingly, thereby extending or shortening the telescopic lens. When the driving component is powered off and the sleeve is rotating, the sleeve drives the first gear to rotate relative to the rotating shaft, meaning the driving assembly is stationary at this time. A clutch device is provided between the sleeve and the driving component. The impact of external force on the camera module is converted into the kinetic energy of the first gear spinning freely and released, placing the transmission mechanism in the telescopic lens in a non-stressed state. This solves the transmission failure caused by external force when the camera module is extended, thereby improving the reliability of the camera module.

[0021] 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

[0022] 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:

[0023] Figure 1 This is a schematic diagram of the structure of a camera module according to an embodiment of this application;

[0024] Figure 2 This is an exploded schematic diagram of the clutch device according to an embodiment of this application;

[0025] Figure 3 This is one of the cross-sectional views of the clutch device according to an embodiment of this application;

[0026] Figure 4 This is a second cross-sectional view of the clutch device according to an embodiment of this application;

[0027] Figure 5 This is a schematic diagram of the clutch device according to an embodiment of this application;

[0028] Figure label:

[0029] 1. Clutch device; 11. First gear; 12. Rotating shaft; 13. Drive assembly; 131. Second gear; 132. Connecting piece; 14. Ball bearing; 15. Pressing assembly; 151. Limiting plate; 152. Elastic assembly; 1521. Elastic element; 1522. Pressure plate; 153. Cage; 2. Drive component; 21. Drive motor; 22. Worm gear; 3. Sleeve; 4. Rack. Detailed Implementation

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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:

[0034] 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).

[0035] 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).

[0036] 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);

[0037] 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.

[0038] To solve the above problems, such as Figure 1, Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the camera module of this application embodiment includes: a telescopic lens, a drive unit 2, and a clutch device 1.

[0039] The clutch device 1 includes a drive assembly 13, a first gear 11, a rotating shaft 12, a pressing assembly 15, and a ball bearing 14.

[0040] The rotating shaft 12 has a first end and a second end opposite to each other. The driving component 13 is disposed at the first end of the rotating shaft 12 and drives the rotating shaft 12 to rotate. A through hole is provided at the shaft center of the first gear 11, and the rotating shaft 12 passes through the through hole. That is to say, the first gear 11 can rotate relative to the rotating shaft 12.

[0041] The pressing assembly 15 is sleeved on the second end of the rotating shaft 12, and the ball 14 is disposed between the pressing assembly 15 and the first gear 11. The pressing assembly 15 abuts against the ball 14, and the first gear 11 is provided with a first receiving groove.

[0042] The clutch device 1 has a linked state and a disengaged state. When the clutch device 1 is in the linked state, the ball 14 is located in the first receiving groove, and when the rotating shaft 12 rotates, the pressing assembly 15 drives the first gear 11 to rotate through the ball 14.

[0043] When the clutch device 1 is in the disengaged state, the ball 14 disengages from the first receiving groove, and the rotating shaft 12 rotates relative to the first gear 11.

[0044] The first gear 11 is connected to the telescopic lens, and the driving component 2 is connected to the driving assembly 13.

[0045] The telescopic lens includes a sleeve 3, a drive component 2 connected to a drive assembly 13, and a first gear 11 connected to the sleeve 3. It is particularly noteworthy that the sleeve 3 is essentially an active sleeve; that is, a rack 4 is provided on the side of the sleeve 3. The rack 4 is an arc-shaped structure, and the first gear 11 meshes with the rack 4.

[0046] In this embodiment, when the driving component 2 is powered on, it drives the driving assembly 13 to rotate, which in turn drives the rotating shaft 12 to rotate. The pressing assembly 15 drives the first gear to rotate via the ball bearing 14. In other words, the first gear 11 rotates with the rotating shaft 12. Driven by the first gear 11, the sleeve 3 rotates accordingly, thereby extending or shortening the telescopic lens. When the driving component 2 is powered off and the sleeve 3 is rotating, the sleeve 3 drives the first gear 11 to rotate relative to the rotating shaft 12. In other words, the driving assembly 13 is stationary at this time. A clutch device 1 is provided between the sleeve 3 and the driving component 2. The impact of external force on the camera module is converted into the kinetic energy of the first gear 11 spinning freely and released, so that the transmission mechanism in the telescopic lens is in a non-stressed state. This solves the transmission failure caused by external force when the camera module is extended, thereby improving the reliability of the camera module.

[0047] In optional embodiments, such as Figure 2 As shown, the pressing assembly 15 includes an elastic component 152, a limiting plate 151, and a retainer 153.

[0048] The limiting plate 151 is fixedly connected to the rotating shaft 12, the retainer 153 is sleeved on the rotating shaft 12 and is movably connected to the rotating shaft 12, the elastic component 152 is disposed between the limiting plate 151 and the retainer 153, the retainer 153 is located on the side of the limiting plate 151 facing the first gear 11, and the elastic component 152 is used to make the retainer 153 abut against the ball 14.

[0049] It should be noted that the retainer 153 can move along the axial direction of the rotating shaft 12, and the elastic component 152 has a certain telescopic capacity, the specific type of which is not specifically limited here.

[0050] In this embodiment, when the drive unit 2 is powered on, the drive unit 2 drives the drive assembly 13 to rotate, and the drive assembly 13 drives the rotating shaft 12 to rotate. At this time, under the action of the elastic component 152, the retainer 153 can abut against the first gear 11, so that the ball 14 is located in the first receiving groove. Therefore, the first gear 11 can rotate with the rotation of the rotating shaft 12. Under the drive of the first gear 11, the sleeve 3 can rotate accordingly, thereby realizing the extension or shortening of the telescopic lens. When the drive unit 2 is powered off and the sleeve 3 rotates, the first gear 11 squeezes the ball 14, the retainer 153 moves away from the first gear 11, the ball 14 disengages from the first receiving groove, and the sleeve 3 can drive the first gear 11 to rotate relative to the rotating shaft.

[0051] In an optional embodiment, the retainer 153 is provided with a second receiving groove, the opening of the second receiving groove facing the first gear 11, and at least a portion of the balls 14 can be received in the second receiving groove.

[0052] It should be noted that the first receiving groove is a spherical groove, and the second receiving groove is adapted to the ball 14. The second receiving groove can be a through groove.

[0053] In this embodiment, when the drive unit 2 is powered on, the drive unit 2 drives the drive assembly 13 to rotate, and the drive assembly 13 drives the rotating shaft 12 to rotate. At this time, under the action of the elastic component 152, the retainer 153 can abut against the first gear 11, so that part of the ball 14 is located in the second receiving groove and the other part is located in the first receiving groove. Therefore, the first gear 11 can rotate with the rotation of the rotating shaft 12. Under the drive of the first gear 11, the sleeve 3 can rotate accordingly, thereby realizing the extension or shortening of the telescopic lens. When the drive unit 2 is powered off and the sleeve 3 rotates, the first gear 11 squeezes the ball 14, and the ball 14 disengages from the first receiving groove. At this time, the sleeve 3 can drive the first gear 11 to rotate relative to the rotating shaft.

[0054] In an optional embodiment, the number of second receiving slots is at least two, and at least one second receiving slot is opposite to the first receiving slot.

[0055] It should be noted that, in order to achieve the stability of the cage 153 rotating synchronously with the first gear 11, and the stability of the ball 14 when the first gear 11 rotates relative to the shaft 12, at least one second receiving groove is opposite to the first receiving groove.

[0056] It should be noted that, in order to achieve the first gear 11 squeezing the ball 14, the ball 14 can be separated from the first receiving groove, and the volume of the first receiving groove is less than or equal to the target volume;

[0057] The target volume is half the volume of the ball bearing 14.

[0058] It should be noted that the ability of the ball 14 to disengage from the first receiving groove is related to the number of balls 14, the diameter of the balls 14, the stiffness of the elastic component 152, the preload of the elastic component 152, and the angle of the spherical groove. The angle of the spherical groove can be quantified by the volume of the spherical groove.

[0059] In optional embodiments, such as Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the elastic component 152 includes an elastic element 1521 and a pressure plate 1522. The pressure plate 1522 is sleeved on the rotating shaft 12 and is located on the side of the elastic element 1521 facing the retainer 153. The pressure plate 1522 abuts against the retainer 153.

[0060] In this embodiment, when the drive unit 2 is powered on, the drive unit 2 drives the drive assembly 13 to rotate, and the drive assembly 13 drives the rotating shaft 12 to rotate. At this time, the ball 14 is partially located in the second receiving groove and the other part is located in the first receiving groove under the action of the pressure plate 1522. Therefore, the first gear 11 can rotate with the rotation of the rotating shaft 12. Under the drive of the first gear 11, the sleeve 3 can rotate accordingly, thereby realizing the extension or shortening of the telescopic lens. When the drive unit 2 is powered off and the sleeve 3 rotates, the first gear 11 squeezes the ball 14, the retainer 153 can move away from the first gear 11, the ball 14 disengages from the first receiving groove, and the sleeve 3 can drive the first gear 11 to rotate relative to the rotating shaft.

[0061] In an optional embodiment, the elastic element 1521 is spirally wound around the rotating shaft 12, and one end of the elastic element 1521 is connected to the limiting plate 151, while the other end of the elastic element 1521 is connected to the retainer 153.

[0062] It should be noted that the elastic element 1521 can be a helical spring, in which case the elastic element 1521 is helically coiled around the circumference of the rotating shaft 12 and extends from one end of the rotating shaft 12 to the other end.

[0063] In an optional embodiment, multiple elastic elements 1521 are arranged around the rotating shaft 12. One end of each elastic element 1521 is connected to a limiting plate 151, and the other end is connected to a retainer 153. That is, the elastic elements 1521 do not contact the rotating shaft 12.

[0064] Among them, the elastic element 1521 can be a spring or an elastic silicone element, etc., without specific limitations.

[0065] In optional embodiments, such as Figure 3 and Figure 4 As shown, the second end of the rotating shaft 12 has a limiting structure, which is connected to the pressing assembly 15 for limiting.

[0066] It should be noted that, under the action of the limiting structure, the limiting plate 151 is fixed on the rotating shaft 12, and the pressure plate 1522 and the retainer 153 can only move relative to the rotating shaft 12 in the axial direction of the rotating shaft 12, and neither can rotate relative to the rotating shaft 12.

[0067] In optional embodiments, such as Figure 3 and Figure 4 As shown, the rotating shaft 12 has a first part and a second part. The first end of the second part is connected to the first part, and the second end of the second part is connected to the drive assembly 13. The first part is a limiting structure, and the cross-section of the first part is non-circular.

[0068] It should be noted that the cross-section of the second part is circular, while the cross-section of the first part is non-circular. In other words, the first part can be a variable cross-section structure, such as an ellipse or a triangle, etc., without specific limitations. The diameter of the second part can be larger or smaller than the diameter of the first part. The diameters of both parts can be selected based on actual working conditions, without specific limitations.

[0069] The limiting plate 151, the pressure plate 1522, and the retainer 153 are all provided with mounting holes that are compatible with the first part.

[0070] In an optional embodiment, the rotating shaft 12 has a first part and a second part, the first end of the second part is connected to the first part, the second end of the second part is connected to the drive assembly 13, the first part is a limiting structure, and the orthographic projection of the first part on the plane where the first gear 11 is located is located within the orthographic projection of the second part on the plane where the first gear 11 is located.

[0071] The cross-section of the first part is smaller than that of the second part.

[0072] It should be noted that the limiting plate 151 is fixed to the first part, and the pressure plate 1522 and the retainer 153 can only move relative to the first part along its axial direction, and neither can rotate relative to the first part. However, the first gear 11 can rotate relative to the second part.

[0073] In optional embodiments, such as Figure 2 , Figure 3 and Figure 4 As shown, the drive assembly 13 includes a second gear 131 and a connector 132. The second gear 131 is disposed at the second end of the rotating shaft 12 and is sleeved on the rotating shaft 12. One end of the connector 132 is connected to the second gear 131 and the other end is connected to the rotating shaft 12. The drive member 2 meshes with the second gear 131 and drives the second gear 131 to rotate. The second gear 131 drives the rotating shaft 12 to rotate through the connector 132.

[0074] It should be noted that the second gear 131 has a through hole, the rotating shaft 12 passes through the through hole, one end of the connector 132 is connected to the inner wall of the through hole, and the other end is connected to the circumference of the rotating shaft 12.

[0075] The driving component 2 includes a drive motor 21 and a worm gear 22. The drive motor 21 is connected to the second gear 131 through the worm gear 22.

[0076] In this embodiment, when the drive unit 2 is powered on, the drive unit 2 drives the second gear 131 to rotate, and the second gear 131 drives the rotating shaft 12 to rotate through the connecting member 132. At this time, the ball 14 is partially located in the second receiving groove and the other part is located in the first receiving groove under the action of the pressure plate 1522. Therefore, the first gear 11 can rotate with the rotation of the rotating shaft 12. Under the drive of the first gear 11, the sleeve 3 can rotate accordingly, thereby realizing the extension or shortening of the telescopic lens. When the drive unit 2 is powered off and the sleeve 3 rotates, the first gear 11 squeezes the ball 14. At this time, the retainer 153 can move away from the first gear 11, the ball 14 disengages from the first receiving groove, and the sleeve 3 can drive the first gear 11 to rotate relative to the rotating shaft.

[0077] In an optional embodiment, the connector 132 is a torsion spring, which is sleeved on the rotating shaft 12.

[0078] It should be noted that the torsion spring is sleeved in the second part.

[0079] In this embodiment, when the drive unit 2 is powered on, the drive unit 2 drives the second gear 131 to rotate, and the second gear 131 drives the rotating shaft 12 to rotate through the torsion spring. At this time, the ball 14 is partially located in the second receiving groove and the other part is located in the first receiving groove under the action of the pressure plate 1522. Therefore, the first gear 11 can rotate with the rotation of the rotating shaft 12. Under the drive of the first gear 11, the sleeve 3 can rotate accordingly, thereby realizing the extension or shortening of the telescopic lens. When the drive unit 2 is powered off and the sleeve 3 is rotating, since the ball 14 is partially located in the second receiving groove and the other part is located in the first receiving groove under the action of the pressure plate 1522, the first gear 11 drives the rotating shaft 12 to rotate. The rotating shaft 12 can rotate relative to the second gear 131 under the action of the torsion spring until the first gear 11 squeezes the ball 14, the ball 14 is dislodged from the first receiving groove, and the sleeve 3 can drive the first gear 11 to rotate relative to the rotating shaft.

[0080] In an optional embodiment, the second gear 131 has a protrusion on the side facing the first gear 11, and the first gear 11 has a groove on the side facing the second gear 131, with the protrusion abutting against the bottom of the groove.

[0081] It should be noted that the second gear 131 can support the first gear 11. In order to ensure that there is a small friction between the first gear 11 and the second gear 131, the first gear 11 and the second gear 131 are assembled by a protrusion and a groove.

[0082] In an optional embodiment, the number of first receiving slots can be one, two or more. When the number of first receiving slots is at least two, when the ball 14 disengages from one first receiving slot and enters another first receiving slot, the clutch device switches from the engaged state to the disengaged state, and then switches from the disengaged state to the engaged state.

[0083] It should be noted that the multiple first receiving slots are arranged along the circumferential direction of the rotating shaft 12. That is, the multiple first receiving slots are arranged around the rotating shaft 12. When the first gear 11 moves relative to the retainer 153, the ball 14 can disengage from one first receiving slot and enter another first receiving slot, thereby realizing the switching between the separated state and the linked state.

[0084] Furthermore, embodiments of this application also provide a clutch device 1, such as... Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the clutch device 1 includes a drive assembly 13, a first gear 11, a rotating shaft 12, a pressing assembly 15, and a ball bearing 14.

[0085] The rotating shaft 12 has a first end and a second end opposite to each other. The driving component 13 is disposed at the first end of the rotating shaft 12 and drives the rotating shaft 12 to rotate. A through hole is provided at the shaft center of the first gear 11, and the rotating shaft 12 passes through the through hole. That is to say, the first gear 11 can rotate relative to the rotating shaft 12.

[0086] The pressing assembly 15 is sleeved on the second end of the rotating shaft 12, and the ball 14 is disposed between the pressing assembly 15 and the first gear 11. The pressing assembly 15 abuts against the ball 14, and the first gear 11 is provided with a first receiving groove.

[0087] The clutch device 1 has a linked state and a disengaged state. When the clutch device 1 is in the linked state, the ball 14 is located in the first receiving groove, and when the rotating shaft 12 rotates, the pressing assembly 15 drives the first gear 11 to rotate through the ball 14.

[0088] When the clutch device 1 is in the disengaged state, the ball 14 disengages from the first receiving groove, and the rotating shaft 12 rotates relative to the first gear 11.

[0089] In this embodiment of the application, the drive component 13 drives the rotating shaft 12 to rotate, and the pressing component 15 drives the first gear to rotate through the ball bearing 14. That is to say, the first gear 11 can rotate with the rotation of the rotating shaft 12. When the first gear 11 rotates relative to the rotating shaft 12, the drive component 13 can be in a stationary state.

[0090] In optional embodiments, such as Figure 2As shown, the pressing assembly 15 includes an elastic component 152, a limiting plate 151, and a retainer 153.

[0091] The limiting plate 151 is fixedly connected to the rotating shaft 12, the retainer 153 is sleeved on the rotating shaft 12 and is movably connected to the rotating shaft 12, the elastic component 152 is disposed between the limiting plate 151 and the retainer 153, the retainer 153 is located on the side of the limiting plate 151 facing the first gear 11, and the elastic component 152 is used to make the retainer 153 abut against the ball 14.

[0092] It should be noted that the retainer 153 can move along the axial direction of the rotating shaft 12, and the elastic component 152 has a certain telescopic capacity, the specific type of which is not specifically limited here.

[0093] In an optional embodiment, the retainer 153 is provided with a second receiving groove, the opening of the second receiving groove facing the first gear 11, and at least a portion of the balls 14 can be received in the second receiving groove.

[0094] It should be noted that the first receiving groove is a spherical groove, and the second receiving groove is adapted to the ball 14. The second receiving groove can be a through groove.

[0095] In an optional embodiment, the number of second receiving slots is at least two, and at least one second receiving slot is opposite to the first receiving slot.

[0096] It should be noted that, in order to achieve the stability of the cage 153 rotating synchronously with the first gear 11, and the stability of the ball 14 when the first gear 11 rotates relative to the shaft 12, at least one second receiving groove is opposite to the first receiving groove.

[0097] It should be noted that, in order to achieve the first gear 11 squeezing the ball 14, the ball 14 can be separated from the first receiving groove, and the volume of the first receiving groove is less than or equal to the target volume;

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

[0099] It should be noted that the ability of the ball 14 to disengage from the first receiving groove is related to the number of balls 14, the diameter of the balls 14, the stiffness of the elastic component 152, the preload of the elastic component 152, and the angle of the spherical groove. The angle of the spherical groove can be quantified by the volume of the spherical groove.

[0100] In optional embodiments, such as Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the elastic component 152 includes an elastic element 1521 and a pressure plate 1522. The pressure plate 1522 is sleeved on the rotating shaft 12 and is located on the side of the elastic element 1521 facing the retainer 153. The pressure plate 1522 abuts against the retainer 153.

[0101] In an optional embodiment, the elastic element 1521 is spirally wound around the rotating shaft 12, and one end of the elastic element 1521 is connected to the limiting plate 151, while the other end of the elastic element 1521 is connected to the retainer 153.

[0102] It should be noted that the elastic element 1521 can be a helical spring, in which case the elastic element 1521 is helically coiled around the circumference of the rotating shaft 12 and extends from one end of the rotating shaft 12 to the other end.

[0103] In an optional embodiment, multiple elastic elements 1521 are arranged around the rotating shaft 12. One end of each elastic element 1521 is connected to a limiting plate 151, and the other end is connected to a retainer 153. That is, the elastic elements 1521 do not contact the rotating shaft 12.

[0104] In optional embodiments, such as Figure 3 and Figure 4 As shown, the second end of the rotating shaft 12 has a limiting structure, which is connected to the pressing assembly 15 for limiting.

[0105] It should be noted that, under the action of the limiting structure, the limiting plate 151 is fixed on the rotating shaft 12, and the pressure plate 1522 and the retainer 153 can only move relative to the rotating shaft 12 in the axial direction of the rotating shaft 12, and neither can rotate relative to the rotating shaft 12.

[0106] In optional embodiments, such as Figure 3 and Figure 4 As shown, the rotating shaft 12 has a first part and a second part. The first end of the second part is connected to the first part, and the second end of the second part is connected to the drive assembly 13. The first part is a limiting structure, and the cross-section of the first part is non-circular.

[0107] It should be noted that the cross-section of the second part is circular, while the cross-section of the first part is non-circular. In other words, the first part can be a variable cross-section structure, such as an ellipse or a triangle, etc., without specific limitations. The diameter of the second part can be larger or smaller than the diameter of the first part. The diameters of both parts can be selected based on actual working conditions, without specific limitations.

[0108] The limiting plate 151, the pressure plate 1522, and the retainer 153 are all provided with mounting holes that are compatible with the first part.

[0109] In optional embodiments, such as Figure 2 , Figure 3 and Figure 4 As shown, the drive assembly 13 includes a second gear 131 and a connector 132. The second gear 131 is disposed at the second end of the rotating shaft 12 and is sleeved on the rotating shaft 12. One end of the connector 132 is connected to the second gear 131 and the other end is connected to the rotating shaft 12. The second gear 131 drives the rotating shaft 12 to rotate through the connector 132.

[0110] It should be noted that the second gear 131 has a through hole, the rotating shaft 12 passes through the through hole, one end of the connector 132 is connected to the inner wall of the through hole, and the other end is connected to the circumference of the rotating shaft 12.

[0111] In an optional embodiment, the connector 132 is a torsion spring, which is sleeved on the rotating shaft 12.

[0112] It should be noted that the torsion spring is sleeved in the second part.

[0113] In an optional embodiment, the second gear 131 has a protrusion on the side facing the first gear 11, and the first gear 11 has a groove on the side facing the second gear 131, with the protrusion abutting against the bottom of the groove.

[0114] It should be noted that the second gear 131 can support the first gear 11. In order to ensure that there is a small friction between the first gear 11 and the second gear 131, the first gear 11 and the second gear 131 are assembled by a protrusion and a groove.

[0115] In an optional embodiment, the number of first receiving slots is at least two. When the ball 14 disengages from one first receiving slot and enters another first receiving slot, the clutch device switches from the engaged state to the disengaged state, and then switches from the disengaged state back to the engaged state.

[0116] It should be noted that the multiple first receiving slots are arranged along the circumferential direction of the rotating shaft 12. That is, the multiple first receiving slots are arranged around the rotating shaft 12. When the first gear 11 moves relative to the retainer 153, the ball 14 can disengage from one first receiving slot and enter another first receiving slot, thereby realizing the switching between the separated state and the linked state.

[0117] 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.

[0118] 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.

[0119] 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.

[0120] 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.

[0121] 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: Drive components, telescopic lens, and clutch mechanism; The clutch device includes a drive assembly, a first gear, a rotating shaft, a pressing assembly, and ball bearings; The drive assembly is disposed at the first end of the rotating shaft, and the drive assembly drives the rotating shaft to rotate. A through hole is provided at the center of the first gear shaft, and the rotating shaft passes through the through hole. The pressing assembly is sleeved on the second end of the rotating shaft, the ball is disposed between the pressing assembly and the first gear, the pressing assembly abuts against the ball, and the first gear is provided with a first receiving groove; The clutch device has a linked state and a disengaged state. When the clutch device is in the linked state, the ball is located in the first receiving groove, and when the rotating shaft rotates, the pressing assembly drives the first gear to rotate through the ball. When the clutch is disengaged, the ball disengages from the first receiving groove, and the rotating shaft rotates relative to the first gear. The first gear is connected to the telescopic lens, and the driving component is connected to the driving assembly; The pressing assembly includes an elastic component, a limiting plate, and a retainer. The limiting plate is fixedly connected to the rotating shaft, and the retainer is sleeved on the rotating shaft and movably connected to the rotating shaft. The elastic component is disposed between the limiting plate and the retainer, and the retainer is located on the side of the limiting plate facing the first gear. The elastic component is used to make the retainer abut against the ball. The drive assembly includes a second gear and a connector. The second gear is disposed at the first end of the rotating shaft and is sleeved on the rotating shaft. One end of the connector is connected to the second gear and the other end is connected to the rotating shaft. The drive assembly meshes with the second gear and drives the second gear to rotate. The second gear drives the rotating shaft to rotate through the connector. The connector is a torsion spring and is sleeved on the rotating shaft.

2. The camera module according to claim 1, characterized in that, The cage is provided with a second receiving groove, the opening of the second receiving groove facing the first gear, and at least a portion of the balls can be received in the second receiving groove.

3. The camera module according to claim 2, characterized in that, The number of the second receiving slots is at least two, and at least one of the second receiving slots is opposite to the first receiving slot.

4. The camera module according to claim 1, characterized in that, The elastic component includes an elastic element and a pressure plate. The pressure plate is sleeved on the rotating shaft and is located on the side of the elastic element facing the retainer. The pressure plate abuts against the retainer.

5. The camera module according to claim 4, characterized in that, The elastic element is spirally wound around the rotating shaft, with one end of the elastic element connected to the limiting plate and the other end of the elastic element connected to the retainer.

6. The camera module according to claim 1, characterized in that, The second end of the rotating shaft has a limiting structure, which is limited and connected to the pressing assembly.

7. The camera module according to claim 6, characterized in that, The rotating shaft has a first part and a second part. The first end of the second part is connected to the first part, and the second end of the second part is connected to the drive assembly. The first part is the limiting structure, and the cross-section of the first part is non-circular.

8. The camera module according to claim 6, characterized in that, The rotating shaft has a first part and a second part. The first end of the second part is connected to the first part, and the second end of the second part is connected to the drive assembly. The first part is the limiting structure. The orthographic projection of the first part onto the plane where the first gear is located is located within the orthographic projection of the second part onto the plane where the first gear is located.

9. The camera module according to claim 1, characterized in that, The second gear has a protrusion on the side facing the first gear, and the first gear has a groove on the side facing the second gear, with the protrusion abutting against the bottom of the groove.

10. The camera module according to claim 1, characterized in that, The number of the first receiving slots is at least two. When the ball disengages from one of the first receiving slots and enters another first receiving slot, the clutch device switches from the engaged state to the disengaged state, and then switches from the disengaged state to the engaged state.

11. An electronic device, characterized in that, It includes: a housing and a camera module according to any one of claims 1 to 10, wherein the camera module is disposed in the housing.

Images