Camera lens motor, camera module and electronic device
By employing magnetic attraction and a receiving groove design in the camera motor, the problem of easy ball bearing detachment is solved, thereby improving the stability and service life of the ball bearing and promoting the stability and miniaturization of the camera motor and camera module.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANCHANG OFILM HUAGUANG TECH CO LTD
- Filing Date
- 2025-06-09
- Publication Date
- 2026-06-05
AI Technical Summary
In existing camera motors, ball bearings are prone to detachment, resulting in poor stability.
Multiple balls and magnetic components are set on the bracket. The balls are restrained by magnetic attraction. Combined with the design of receiving groove and bearing groove, the stability and service life of the balls are improved.
This effectively reduces the risk of ball bearings detaching from the bracket, improves the image capture stability of the camera motor and camera module, and promotes the miniaturization design of the camera motor.
Smart Images
Figure CN224329529U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of camera equipment technology, specifically to a camera motor, camera module, and electronic equipment. Background Technology
[0002] In existing camera motors, ball bearings are typically installed between the bracket mounted on the circuit board assembly and the support for the lens assembly. These ball bearings help reduce friction and wear. However, there is a risk that the ball bearings in the aforementioned camera motors may easily fall out. Utility Model Content
[0003] In view of the above, it is necessary to provide a camera motor, camera module and electronic device to improve the stability of the ball bearing.
[0004] This application provides a camera motor, including:
[0005] Circuit board assembly;
[0006] A bracket is disposed on the circuit board assembly;
[0007] Multiple balls are disposed on the side of the bracket away from the circuit board assembly and spaced apart circumferentially along the bracket;
[0008] Multiple magnetic components are disposed on the side of the bracket facing the circuit board assembly and correspond one-to-one with the multiple balls. Each magnetic component is magnetically attracted to the corresponding ball.
[0009] A support base, disposed on a plurality of said balls, is used to support the lens assembly; and
[0010] A drive assembly is disposed between the support base and the bracket, and is used to drive the support base to move.
[0011] In the aforementioned camera motor, multiple balls and multiple magnetic components are arranged one-to-one on opposite sides of the bracket. Each ball and its corresponding magnetic component magnetically engage, and the magnetic force generated by the magnetic component on the ball restricts the ball to the bracket, which reduces the risk of multiple balls detaching from the bracket and thus improves the stability of the multiple balls.
[0012] In some embodiments, the bracket has a plurality of first receiving slots on the side facing the circuit board assembly, and the plurality of first receiving slots are respectively arranged in correspondence with a plurality of magnetic components. Each magnetic component is disposed in a corresponding first receiving slot, and the circuit board assembly covers the plurality of first receiving slots.
[0013] Therefore, multiple first receiving slots can prevent external components from colliding with the multiple magnetic components, thereby improving the service life of the multiple magnetic components. In addition, the multiple magnetic components are arranged in multiple first receiving slots, which can reduce the space occupied by the multiple magnetic components outside the bracket, and is conducive to the miniaturization of the camera motor.
[0014] In some embodiments, the magnetic attractor is interference-fitted with the corresponding first receiving groove, or the magnetic attractor is fixed with adhesive by dispensing.
[0015] Therefore, the above settings make the magnetic component more stable relative to the corresponding first receiving slot, which helps to improve the positional stability of the magnetic component.
[0016] In some embodiments, the bracket has a plurality of second receiving slots on the side opposite to the circuit board assembly, and the plurality of second receiving slots are respectively arranged in a one-to-one correspondence with the plurality of balls. Each ball is disposed in a corresponding second receiving slot, and the diameter of each ball is greater than the depth of the corresponding second receiving slot.
[0017] Therefore, multiple second receiving slots can prevent external components from colliding with the multiple balls, thereby improving the service life of the multiple balls. In addition, the multiple balls being arranged in multiple second receiving slots can reduce the space occupied by the multiple balls outside the bracket, which is beneficial for the miniaturization of the camera motor.
[0018] In some embodiments, the central axis of each magnetic element is aligned with the central axis of the corresponding second receiving groove.
[0019] Therefore, the above settings can make the magnetic attraction force of the magnetic component acting on the corresponding ball uniformly distributed, which is beneficial to the rolling stability of the ball.
[0020] In some embodiments, the support seat is provided with a plurality of support grooves in the direction of the bracket, and the plurality of support grooves correspond one-to-one with a plurality of balls, with each ball extending to the corresponding support groove.
[0021] Therefore, multiple bearing grooves can reduce the impact of external components on the multiple balls, which helps to improve the service life of the multiple balls. In addition, the multiple balls set in multiple bearing grooves can reduce the space occupied by the multiple balls outside the bearing seat, which is conducive to the miniaturization of the camera motor.
[0022] In some embodiments, a plurality of the bearing grooves and a plurality of the second receiving grooves are provided in a one-to-one correspondence, and the bearing grooves and the corresponding second receiving grooves together form an installation space for installing the ball, the height of the installation space being greater than the diameter of the ball.
[0023] Therefore, the installation space can limit the movement of the balls, further preventing them from detaching from the bracket.
[0024] In some embodiments, the ball and the corresponding bearing groove are in point contact, and / or the ball and the corresponding second receiving groove are in point contact.
[0025] Therefore, by adopting the above settings, the friction force experienced by the ball during movement can be reduced, allowing the ball to roll freely.
[0026] This application embodiment also provides a camera module, including:
[0027] The camera motor of any of the above embodiments;
[0028] The lens assembly is mounted on the support; and
[0029] A protective cover is provided on the bracket and fitted onto the support and the lens assembly.
[0030] In the camera motor of the aforementioned camera module, multiple ball bearings and multiple magnetic components are arranged one-to-one on opposite sides of the bracket. Each ball bearing and its corresponding magnetic component magnetically engage, which reduces the risk of multiple ball bearings detaching from the bracket, thereby improving the image capture stability of the camera module.
[0031] This application also provides an electronic device, including:
[0032] The camera module described in the above embodiments; and
[0033] The housing, on which the camera module is mounted.
[0034] In the aforementioned electronic devices, the stable image capture of the camera module is beneficial for improving the image quality of the electronic devices. Attached Figure Description
[0035] Figure 1 This is a schematic diagram of the camera motor in an embodiment of this application.
[0036] Figure 2 for Figure 1 The diagram shows a cross-sectional view of the camera motor along the AA direction.
[0037] Figure 3 This is a schematic diagram of the camera module in an embodiment of this application.
[0038] Figure 4 This is a schematic diagram of the structure of an electronic device according to an embodiment of this application.
[0039] Key component symbols: Camera motor 100, mounting space 100a, circuit board assembly 110, reinforcing member 111, circuit board 112, adhesive layer 113, bracket 120, first receiving groove 120a, second receiving groove 120b, ball bearing 130, magnetic component 140, support base 150, support groove 150a, drive assembly 160, coil 161, magnet 162, camera module 200, lens assembly 210, protective cover 220, electronic device 1000, housing 300. Detailed Implementation
[0040] The embodiments of this application are described in detail below, examples of which are shown 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.
[0041] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that allows communication between the two; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two elements or the interaction between two elements. In the description of this application, it should be noted that "multiple" means two or more, unless otherwise expressly and specifically limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0042] The embodiments of this application will be described in detail below with reference to the accompanying drawings.
[0043] Please see Figure 1 and Figure 2 This application provides a camera motor 100, including a circuit board assembly 110, a bracket 120, multiple balls 130, multiple magnetic components 140, a carrier 150, and a drive assembly 160. The bracket 120 is disposed on the circuit board assembly 110. The multiple balls 130 are all disposed on the side of the bracket 120 away from the circuit board assembly 110 and are spaced apart along the circumference of the bracket 120. The multiple magnetic components 140 are all disposed on the side of the bracket 120 facing the circuit board assembly 110 and correspond one-to-one with the multiple balls 130. Each magnetic component 140 is magnetically engaged with the corresponding ball 130. The carrier 150 is disposed on the multiple balls 130 and is used to support a lens assembly. The drive assembly 160 is disposed between the carrier 150 and the bracket 120 and is used to drive the carrier 150 to move.
[0044] In the aforementioned camera motor 100, multiple balls 130 and multiple magnetic components 140 are arranged one-to-one on opposite sides of the bracket 120. Each ball 130 and its corresponding magnetic component 140 are magnetically attracted to each other. The magnetic force generated by the magnetic component 140 on the ball 130 restricts the ball 130 to the bracket 120, which reduces the risk of multiple balls 130 detaching from the bracket 120 and thus improves the stability of multiple balls 130.
[0045] In some embodiments, multiple balls 130 are respectively disposed at the four corners of the bracket 120 (not all four corners of the bracket 120 are provided with balls 130). In specific implementation, they can be disposed at one opposite corner of the bracket 120, or at one opposite corner plus another corner, or balls 130 can be disposed at all four corners. The specific arrangement can also be flexibly set according to actual needs.
[0046] In some embodiments, the ball 130 can be a magnetic ball, such as a steel ball or an iron ball. Compared with a non-magnetic ball 130 (such as a ceramic ball, a silicone ball, or a plastic ball), a magnetic ball can utilize the magnetization effect of the magnetic attractor 140 to increase the magnetic attraction between the magnetic attractor 140 and further prevent the ball 130 from falling off.
[0047] Please see Figure 2 In some embodiments, the bracket 120 has a plurality of first receiving slots 120a on the side facing the circuit board assembly 110. The plurality of first receiving slots 120a are respectively arranged in correspondence with a plurality of magnetic components 140. Each magnetic component 140 is disposed in the corresponding first receiving slot 120a. The circuit board assembly 110 covers the plurality of first receiving slots 120a.
[0048] Therefore, the multiple first receiving slots 120a can prevent external components from colliding with the multiple magnetic components 140, thereby improving the service life of the multiple magnetic components 140. In addition, the multiple magnetic components 140 are disposed in the multiple first receiving slots 120a, which can reduce the space occupied by the multiple magnetic components 140 outside the bracket 120, which is conducive to the miniaturization of the camera motor 100.
[0049] In some embodiments, the magnetic member 140 is interference-fitted with the corresponding first receiving groove 120a. In other embodiments, the magnetic member 140 is fixed with adhesive by dispensing.
[0050] Therefore, the above settings make the magnetic component more stable relative to the corresponding first receiving slot, which helps to improve the positional stability of the magnetic component.
[0051] Please see Figure 2In some embodiments, the bracket 120 has a plurality of second receiving grooves 120b on the side opposite to the circuit board assembly 110. The plurality of second receiving grooves 120b are respectively arranged with a plurality of balls 130. Each ball 130 is disposed in the corresponding second receiving groove 120b, and the diameter of each ball 130 is greater than the depth of the corresponding second receiving groove 120b.
[0052] It should be noted that the diameter of each ball 130 is greater than the depth of the corresponding second receiving groove 120b, so that part of the structure of each ball 130 protrudes from the second receiving groove 120b to form support for the bearing seat 150.
[0053] Therefore, the multiple second receiving slots 120b can prevent external components from colliding with the multiple balls 130, thereby improving the service life of the multiple balls 130. In addition, the multiple balls 130 are disposed in the multiple second receiving slots 120b, which can reduce the space occupied by the multiple balls 130 outside the bracket 120, which is conducive to the miniaturization of the camera motor 100.
[0054] Understandably, to reduce the friction between the ball 130 and the wall of the second receiving groove 120b, the friction between the ball 130 and the second receiving groove 120b can be point contact friction. Specifically, the width of the second receiving groove 120b can be set to be greater than the diameter of the ball 130, so that the ball 130 and the wall of the second receiving groove 120b form point contact, avoiding surface contact, thereby reducing the friction between the ball 130 and the second receiving groove 120b, allowing the ball 130 to roll freely within the second receiving groove 120b.
[0055] In some embodiments, the central axis of each magnetic member 140 coincides with the central axis of the corresponding second receiving groove 120b. Exemplarily, the cross-section of each magnetic member 140 is the same as the cross-section of the second receiving groove 120b.
[0056] Therefore, through the above settings, the magnetic attraction force of the magnetic attractor 140 acting on the corresponding ball 130 can be evenly distributed, which is beneficial to the rolling stability of the ball 130.
[0057] Please see Figure 2 In some embodiments, the support seat 150 is provided with a plurality of support grooves 150a in the direction of the bracket 120, and the plurality of support grooves 150a correspond one-to-one with a plurality of balls 130, with each ball 130 extending to the corresponding support groove 150a.
[0058] Therefore, the multiple bearing grooves 150a can reduce the impact of external components on the multiple balls 130, which is beneficial to improving the service life of the multiple balls 130. In addition, the multiple balls 130 are arranged in multiple bearing grooves 150a, which can reduce the space occupied by the multiple balls 130 outside the bearing seat 150, which is beneficial to the miniaturization of the camera motor 100.
[0059] Please see Figure 2 In some embodiments, multiple bearing grooves 150a are provided one-to-one with multiple second receiving grooves 120b, and the bearing grooves 150a and the corresponding second receiving grooves 120b form an installation space 100a for mounting the ball bearings 130. This facilitates the miniaturization of the camera motor 100, and the two can also interact to form a limiting structure to further prevent the ball bearings 130 from falling off.
[0060] Please see Figure 2 Furthermore, the height h of the installation space 100a can be set to be greater than the diameter d of the ball 130, which can prevent the ball 130 from being unable to roll freely due to the squeezing between the bracket 120 and the bearing seat 150, thus affecting its working performance.
[0061] In some embodiments, to reduce the friction between the ball 130 and the wall of the bearing groove 150a, the friction between the ball 130 and the bearing groove 150a can be point contact friction. Specifically, the width of the bearing groove 150a can be made larger than the diameter of the ball 130 so that the ball 130 and the wall of the bearing groove 150a form point contact, avoiding surface contact, thereby reducing the friction between the ball 130 and the wall of the bearing groove 150a, allowing the ball 130 to roll freely within the bearing groove 150a.
[0062] Please see Figure 2 In some embodiments, the drive assembly 160 includes a coil 161 and a magnet 162. The coil 161 is disposed on the bracket 120, and the magnet 162 is disposed on the support 150 and correspondingly disposed to the coil 161. Exemplarily, the magnet 162 may be a magnet or a magnetic stone.
[0063] Therefore, the magnetic attraction between coil 161 and magnet 162 enables the drive of the carrier 150, which is beneficial for the miniaturization of the camera motor 100.
[0064] In this embodiment, there are multiple sets of drive components 160, which are arranged at intervals along the circumference of the support 150 to improve the movement efficiency of the drive support 150.
[0065] Please see Figure 2In some embodiments, the circuit board assembly 110 includes a reinforcing member 111, a circuit board 112, and an adhesive layer 113. The reinforcing member 111 may be a steel sheet, the circuit board 112 is disposed on the reinforcing member 111, and the adhesive layer 113 connects the circuit board 112 and the bracket 120.
[0066] Therefore, by adopting the above settings, the manufacturing cost of the circuit board assembly 110 can be reduced while meeting the strength requirements of the circuit board assembly 110.
[0067] Please see Figure 3 This application also provides a camera module 200, including a lens assembly 210, a protective cover 220, and the camera motor 100 described in the above embodiments. The lens assembly 210 is mounted on a support 150, and the protective cover 220 is disposed on a bracket 120 and sleeved on the support 150 and the lens assembly 210.
[0068] In the camera motor 100 of the aforementioned camera module 200, multiple ball bearings 130 and multiple magnetic components 140 are arranged one-to-one on opposite sides of the bracket 120. Each ball bearing 130 and its corresponding magnetic component 140 are magnetically attracted to each other, which can reduce the risk of multiple ball bearings 130 detaching from the bracket 120, thereby improving the image acquisition stability of the camera module 200.
[0069] Please see Figure 4 This application also provides an electronic device 1000, including a housing 300 and a camera module 200 as described in the above embodiments, wherein the camera module 200 is mounted on the housing 300. For example, the electronic device 1000 can be a mobile phone or a tablet computer.
[0070] In the aforementioned electronic device 1000, the image acquisition by the camera module 200 is stable, which helps to improve the image quality of the electronic device 1000.
[0071] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be embraced within this application.
[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.
Claims
1. A camera motor, characterized in that, include: Circuit board assembly; A bracket is disposed on the circuit board assembly; Multiple balls are disposed on the side of the bracket away from the circuit board assembly and spaced apart circumferentially along the bracket; Multiple magnetic components are disposed on the side of the bracket facing the circuit board assembly and correspond one-to-one with the multiple balls. Each magnetic component is magnetically attracted to the corresponding ball. A support base, provided on a plurality of the aforementioned balls, is used to support the lens assembly; and A drive assembly is disposed between the support base and the bracket, and is used to drive the support base to move.
2. The camera motor as described in claim 1, characterized in that, The bracket has a plurality of first receiving slots on the side facing the circuit board assembly. The plurality of first receiving slots are arranged in a one-to-one correspondence with the plurality of magnetic components. Each magnetic component is disposed in the corresponding first receiving slot. The circuit board assembly covers the plurality of first receiving slots.
3. The camera motor as described in claim 2, characterized in that, The magnetic suction component is interference-fitted with the corresponding first receiving groove, or the magnetic suction component is fixed with adhesive by dispensing.
4. The camera motor as described in claim 1, characterized in that, The bracket has a plurality of second receiving slots on the side away from the circuit board assembly. The plurality of second receiving slots are arranged one-to-one with the plurality of balls. Each ball is disposed in the corresponding second receiving slot, and the diameter of each ball is greater than the depth of the corresponding second receiving slot.
5. The camera motor as described in claim 4, characterized in that, The central axis of each magnetic element is aligned with the central axis of the corresponding second receiving slot.
6. The camera motor as described in claim 4, characterized in that, The bearing seat is provided with multiple bearing grooves in the direction of the bracket, and each of the multiple bearing grooves corresponds to a multiple of the balls, with each ball extending to the corresponding bearing groove.
7. The camera motor as described in claim 6, characterized in that, Multiple bearing grooves and multiple second receiving grooves are provided in a one-to-one correspondence. The bearing grooves and the corresponding second receiving grooves together form an installation space for installing the ball bearings. The height of the installation space is greater than the diameter of the ball bearings.
8. The camera motor as described in claim 6, characterized in that, The ball and the corresponding bearing groove are in point contact, and / or the ball and the corresponding second receiving groove are in point contact.
9. A camera module, characterized in that, include: The camera motor as described in any one of claims 1 to 8; The lens assembly is mounted on the support. and A protective cover is provided on the bracket and fitted onto the support and the lens assembly.
10. An electronic device, characterized in that, include: The camera module as described in claim 9; and The housing, on which the camera module is mounted.