Motor assembly, camera device and electronic device
Patent Information
- Application Number
- CN202611069858.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-07-17
- Publication Date
- 2026-09-15
Smart Images
Figure CN122765296A_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of camera device technology, specifically relating to a motor assembly, camera device, and electronic device. Background Technology
[0002] In related technologies, the camera device of an electronic device includes a ball motor and a camera. The ball motor includes a mounting carrier, a base, and balls. A track is formed between the mounting carrier and the base, and the balls are located within the track. A lubricating medium exists between the balls and the track. The camera is mounted on the mounting carrier. When the ambient temperature of the electronic device is below 10℃, the lower temperature causes the viscosity of the lubricating medium in the ball motor to increase. This prevents the balls from sliding or rolling freely within the track, affecting the smoothness of the movement of the mounting carrier relative to the base, and consequently impacting the performance of the camera device. Summary of the Invention
[0003] This application aims to provide a motor assembly, camera device, and electronic device that can solve the problem in the related art where, when the ambient temperature of the electronic device is below 10°C, the ball bearings cannot slide or roll freely within the track, affecting the smoothness of the movement of the mounting carrier relative to the seat.
[0004] To solve the above-mentioned technical problems, this application is implemented as follows:
[0005] In a first aspect, embodiments of this application propose a motor assembly, comprising: a base; a mounting carrier disposed within the base, the mounting carrier being movable relative to the base, a plurality of tracks being enclosed between the outer peripheral wall of the mounting carrier and the inner peripheral wall of the base, the plurality of tracks being arranged around the mounting carrier, the track walls including a first conductive wall and a second conductive wall, the first conductive wall and the second conductive wall having a potential difference when energized; a plurality of ball bearing groups, each ball bearing group located within a track, the first conductive wall and the second conductive wall both contacting the ball bearing group, the ball bearing group including a plurality of controllable deformable balls arranged along the height direction of the motor assembly; a lubricating medium located between the controllable deformable balls and the tracks; the controllable deformable balls deform and generate heat when the first conductive wall and the second conductive wall are energized, and recover their deformation and stop generating heat when the first conductive wall and the second conductive wall are de-energized; wherein, the outer diameter corresponding to the controllable deformable ball when it deforms is larger than the outer diameter corresponding to the controllable deformable ball when it recovers its deformation.
[0006] Secondly, embodiments of this application provide a camera device, which includes the motor assembly described in the first aspect.
[0007] Thirdly, embodiments of this application provide an electronic device, which includes: the motor assembly of the first aspect; or the camera device of the second aspect.
[0008] In embodiments of this application, the motor assembly includes a base, a mounting carrier, and a plurality of ball bearings.
[0009] The mounting carrier serves to mount and secure the camera of the video recording device. The mounting carrier is housed within a base and is movable relative to the base. This movement of the mounting carrier causes the camera to move relative to the base, ensuring the performance of the video recording device, including the motor assembly.
[0010] Multiple tracks are formed between the outer peripheral wall of the mounting carrier and the inner peripheral wall of the base. The multiple tracks are arranged around the mounting carrier, that is, multiple tracks are located on the periphery of the mounting carrier and are arranged at intervals.
[0011] There are multiple ball bearing assemblies, and the number of ball bearing assemblies is equal to the number of tracks. Each ball bearing assembly is located within a track. Each ball bearing assembly includes multiple controllable deformable balls, which are arranged along the height direction of the motor assembly.
[0012] The track walls include a first conductive wall and a second conductive wall. When energized, the first and second conductive walls have a potential difference, and an electric field can be formed between them. The first conductive wall contacts the ball assembly; specifically, it contacts the controllable deformation balls of the ball assembly. The second conductive wall also contacts the ball assembly; specifically, it contacts the controllable deformation balls of the ball assembly.
[0013] When the first and second conductive walls are energized, they supply power to the controllable deformable ball bearings. The energized ball bearings generate heat, which is conducted to the track wall and heats the lubricating medium between the ball bearings and the track, keeping the temperature and viscosity of the lubricating medium within a normal range. This allows the ball bearings to slide or roll freely within the track, ensuring the smoothness and reliability of the movement of the mounting carrier relative to the seat.
[0014] When the first and second conductive walls are energized, they supply power to the controllable deformation ball bearing, causing it to deform. When the first and second conductive walls are de-energized, the controllable deformation ball bearing returns to its original shape. The outer diameter of the controllable deformation ball bearing during deformation is larger than its outer diameter when it returns to its original shape. When the ambient temperature is below 10°C, temperature changes cause the mounting carrier and base to shrink, reducing their volume. Therefore, when the mounting carrier and base shrink due to temperature changes, the first and second conductive walls supply power to the controllable deformation ball bearing, causing it to deform. The increased outer diameter of the controllable deformation ball bearing increases the gap between the base and the mounting carrier, compensating for the dimensional changes caused by the shrinkage of the materials of the base and mounting carrier when the ambient temperature is below 10°C. This ensures that the camera of the imaging device can operate normally when the ambient temperature is below 10°C.
[0015] Therefore, by rationally designing the structure of the motor assembly, its use is not limited by ambient temperature. When the motor assembly operates at an ambient temperature below 10℃, the controllable deformable ball can deform and generate heat when the first and second conductive walls are energized. The heat generated by the controllable deformable ball can be used to heat the lubricating medium located between the controllable deformable ball and the track, ensuring the lubricating properties of the lubricating medium. The controllable deformable ball can slide or roll freely within the track, and the mounting carrier can move smoothly relative to the seat. At the same time, the outer diameter of the controllable deformable ball increases to compensate for the dimensional changes in the seat and mounting carrier caused by material shrinkage when the ambient temperature is below 10℃, ensuring that the camera of the camera device can work normally.
[0016] 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
[0017] 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:
[0018] Figure 1 This is a schematic diagram of the structure of a motor assembly according to an embodiment of this application;
[0019] Figure 2 This is an exploded view of a motor assembly according to an embodiment of this application;
[0020] Figure 3 This is a schematic diagram of the first part of the structure of a motor assembly according to an embodiment of this application;
[0021] Figure 4 This is a schematic diagram of the second part of the structure of a motor assembly according to an embodiment of this application;
[0022] Figure 5 This is a schematic diagram of the structure of an electronic device according to an embodiment of this application.
[0023] Figure label:
[0024] 1. Electronic device; 10. Motor assembly; 100. Base; 110. Protruding structure; 120. Notch; 200. Mounting carrier; 210. Recess; 300. Track; 310. First conductive wall; 320. Second conductive wall; 400. Ball assembly; 410. Controllable deformation ball; 410a. Shape memory alloy ball; 500. Lubricating medium; 610. First conductive structure; 612. First conductive plate; 620. Second conductive structure; 622. Second conductive plate; 630. Flexible circuit board; 640. Temperature sensor; 650. Detection element; 660. Reinforcing plate; 670. Housing; 680. Coil; 690. Magnetic element; 700. Support plate; 80. Camera device. Detailed Implementation
[0025] 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.
[0026] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.
[0027] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "linked" 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0028] The following is combined with Figures 1 to 5 This application describes a motor assembly 10, a camera device 80, and an electronic device 1 according to embodiments thereof.
[0029] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a motor assembly 10 according to some embodiments of this application includes: a base 100; a mounting carrier 200 disposed within the base 100, the mounting carrier 200 being movable relative to the base 100, a plurality of tracks 300 being formed between the outer peripheral wall of the mounting carrier 200 and the inner peripheral wall of the base 100, the plurality of tracks 300 being arranged around the mounting carrier 200, the track walls of the tracks 300 including a first conductive wall 310 and a second conductive wall 320, the first conductive wall 310 and the second conductive wall 320 having a potential difference when energized; a plurality of ball bearing sets 400, each ball bearing set 400 being located within one track 300, the first conductive wall 310 and the second conductive wall 320 having a potential difference when energized; and a plurality of ball bearing sets 400, each ball bearing set 400 being located within one track 300, the first conductive wall 310 and the second conductive wall 320 having a potential difference when energized. The second conductive wall 320 is in contact with the ball assembly 400, which includes a plurality of controllable deformable balls 410 arranged along the height direction of the motor assembly 10; a lubricating medium 500 is located between the controllable deformable balls 410 and the track 300; the controllable deformable balls 410 deform and generate heat when the first conductive wall 310 and the second conductive wall 320 are energized, and recover their deformation and stop generating heat when the first conductive wall 310 and the second conductive wall 320 are de-energized; wherein, the outer diameter of the controllable deformable ball 410 when it deforms is larger than the outer diameter of the controllable deformable ball 410 when it recovers its deformation.
[0030] In this embodiment, the motor assembly 10 includes a base 100, a mounting carrier 200, and a plurality of ball bearing assemblies 400.
[0031] The mounting carrier 200 serves to mount and fix the camera of the camera device 80. The mounting carrier 200 is located inside the base 100 and can move relative to the base 100. When the mounting carrier 200 moves, it can drive the camera to move relative to the base 100 to ensure the performance of the camera device 80, including the motor assembly 10.
[0032] Multiple tracks 300 are formed between the outer peripheral wall of the mounting carrier 200 and the inner peripheral wall of the base 100. The multiple tracks 300 are arranged around the mounting carrier 200, that is, the multiple tracks 300 are located on the periphery of the mounting carrier 200 and are arranged at intervals.
[0033] There are multiple ball sets 400, and the number of ball sets 400 is equal to the number of tracks 300. Each ball set 400 is located within a track 300. Each ball set 400 includes multiple controllable deformable balls 410, which are arranged along the height direction of the motor assembly 10.
[0034] The track wall of track 300 includes a first conductive wall 310 and a second conductive wall 320. When energized, the first conductive wall 310 and the second conductive wall 320 have a potential difference, and an electric field can be formed between them. The first conductive wall 310 contacts the ball assembly 400; specifically, it contacts the controllable deformable ball 410 of the ball assembly 400. The second conductive wall 320 contacts the ball assembly 400; specifically, it contacts the controllable deformable ball 410 of the ball assembly 400.
[0035] When the first conductive wall 310 and the second conductive wall 320 are energized, they supply power to the controllable deformable ball bearing 410. The energized ball bearing 410 generates heat, which is conducted to the track wall and heats the lubricating medium 500 located between the ball bearing 410 and the track 300. This keeps the temperature of the lubricating medium 500 within a normal range and ensures that its viscosity is within a normal range. The ball bearing 410 can slide or roll freely within the track 300, ensuring the smoothness and reliability of the movement of the mounting carrier 200 relative to the seat 100.
[0036] When the first conductive wall 310 and the second conductive wall 320 are energized, they supply power to the controllable deformation ball 410, causing the ball 410 to deform. When the first conductive wall 310 and the second conductive wall 320 are de-energized, the controllable deformation ball 410 returns to its original shape. The outer diameter of the controllable deformation ball 410 during deformation is larger than the outer diameter during its return to its original shape. When the ambient temperature is below 10°C, temperature changes will cause the mounting carrier 200 and the base 100 to shrink, resulting in a smaller volume. Therefore, when the mounting carrier 200 and the base 100 shrink due to temperature changes, the first conductive wall 310 and the second conductive wall 320 supply power to the controllable deformation ball 410. The controllable deformation ball 410 deforms, and its outer diameter increases, thereby increasing the gap between the base 100 and the mounting carrier 200. This compensates for the dimensional changes caused by the shrinkage of the materials of the base 100 and the mounting carrier 200 when the ambient temperature is below 10°C, ensuring that the camera of the camera device 80 can work normally when the ambient temperature is below 10°C.
[0037] Therefore, by reasonably setting the structure of the motor assembly 10, the use of the motor assembly 10 is not limited by the ambient temperature. When the motor assembly 10 works in an ambient temperature below 10°C, the controllable deformable ball 410 can deform and generate heat when the first conductive wall 310 and the second conductive wall 320 are energized. The heat generated by the controllable deformable ball 410 can be used to heat the lubricating medium 500 located between the controllable deformable ball 410 and the track 300, ensuring the lubrication characteristics of the lubricating medium 500. The controllable deformable ball 410 can slide or roll freely in the track 300, and the mounting carrier 200 can move smoothly relative to the seat 100. At the same time, the outer diameter of the controllable deformable ball 410 increases to compensate for the dimensional changes of the seat 100 and the mounting carrier 200 due to material shrinkage when the ambient temperature is below 10°C, ensuring that the camera of the camera device 80 can work normally.
[0038] When the motor assembly 10 operates at normal temperature, the temperature of the lubricating medium 500 is within the normal range, the first conductive wall 310 and the second conductive wall 320 are de-energized, the controllable deformation ball 410 will not deform, and the controllable deformation ball 410 will not generate heat.
[0039] The ball assembly 400 includes multiple controllable deformable balls 410. The first conductive wall 310 and the second conductive wall 320 are both in contact with the ball assembly 400. When the first conductive wall 310 and the second conductive wall 320 are energized, even if some of the controllable deformable balls 410 in the ball assembly 400 are not in contact with the first conductive wall 310 and / or the second conductive wall 320, they can still effectively contact the first conductive wall 310 and the second conductive wall 320 through the remaining controllable deformable balls 410. This ensures that at least some of the controllable deformable balls 410 in the ball assembly 400 will deform and generate heat, thus ensuring the effectiveness and reliability of the camera operation of the camera device 80. Furthermore, the multiple controllable deformable balls 410 are arranged along the height direction of the motor assembly 10, which enables uniform load distribution, reduces the load on individual controllable deformable balls 410, and helps to extend the service life of the ball assembly 400 and the track 300.
[0040] Multiple tracks 300 are located around the periphery of the mounting carrier 200 and are spaced apart. This increases the mating area and angle between the mounting carrier 200 and the base 100, providing a stable and symmetrical motion guide structure. This allows the mounting carrier 200 to move stably and reliably relative to the base 100, ensuring the smoothness and accuracy of the camera's movement. Furthermore, the multiple tracks 300 and multiple ball bearing assemblies 400 work together to achieve multi-point support, ensuring balanced force distribution and preventing the mounting carrier 200 from tilting.
[0041] Specifically, when the electronic device 1 is used in an environment where the temperature is below 10°C, the first conductive wall 310 and the second conductive wall 320 are energized to supply power to the controllable deformable ball 410 of the ball assembly 400. The energized controllable deformable ball 410 generates heat, which can be conducted to the track wall and heat the lubricating medium 500 located between the controllable deformable ball 410 and the track 300.
[0042] For example, the camera device 80, which includes the motor assembly 10, has at least a focusing function.
[0043] For example, the first conductive wall 310 is a positive electrode wall and the second conductive wall 320 is a negative electrode wall. Alternatively, the first conductive wall 310 is a negative electrode wall and the second conductive wall 320 is a positive electrode wall.
[0044] For example, the first conductive wall 310 is a negative electrode wall or a positive electrode wall, and the second conductive wall 320 is grounded.
[0045] For example, the first conductive wall 310 is grounded, and the second conductive wall 320 is a negative electrode wall or a positive electrode wall.
[0046] For example, the lubricating medium 500 is lubricating oil.
[0047] In some embodiments, the controllable deformation ball 410 includes a shape memory alloy ball 410a, the shape memory alloy ball 410a having a phase change operating temperature greater than or equal to -20°C and less than or equal to 70°C.
[0048] In this embodiment, the controllable deformation ball 410 includes a shape memory alloy ball 410a, that is, the ball is made of a conductive shape memory alloy. The phase transition operating temperature of the shape memory alloy ball 410a is greater than or equal to -20°C and less than or equal to 70°C, so that the outer surface of the shape memory alloy ball remains smooth when it deforms, ensuring that the controllable deformation ball 410 can roll effectively, and providing reliable structural support for ensuring the performance of the camera device 80.
[0049] For example, when the ambient temperature of the shape memory alloy ball 410a is below 10°C, the shape memory alloy ball 410a can generate heat when the first conductive wall 310 and the second conductive wall 320 are energized, and deform simultaneously. The outer diameter of the shape memory alloy ball 410a will increase, which can not only heat the lubricating medium 500 between the shape memory alloy ball 410a and the track 300, so that the viscosity of the lubricating medium 500 is within the normal range, but also compensate for the dimensional changes of the seat 100 and the mounting carrier 200 caused by low temperature shrinkage, and ensure that the controllable deformation ball 410 can roll and slide freely in the track 300.
[0050] For example, the phase transformation operating temperatures of the shape memory alloy ball 410a include -10℃, -5℃, 0℃, 5℃, 10℃, 12℃, 15℃, 18℃, 20℃, 25℃, 30℃, 32℃, 35℃, 38℃, 40℃, 45℃, 50℃, 55℃, 60℃, 65℃ and 68℃, etc., which will not be listed here one by one.
[0051] In some other embodiments, the controllable deformation ball 410 is made of a material with thermostrictive properties.
[0052] In some embodiments, when the first conductive wall 310 and the second conductive wall 320 are energized, the outer diameter of the controllable deformable ball 410 is d1, and when the first conductive wall 310 and the second conductive wall 320 are de-energized, the outer diameter of the controllable deformable ball 410 is d2, and (d1-d2) / d2≤2%.
[0053] In this embodiment, when the first conductive wall 310 and the second conductive wall 320 are energized, the outer diameter of the controllable deformable ball 410 is denoted as d1. When the first conductive wall 310 and the second conductive wall 320 are de-energized, the outer diameter of the controllable deformable ball 410 is denoted as d2.
[0054] By refining the value relationship between d1 and d2 to satisfy (d1-d2) / d2≤2%, that is, the deformation of the controllable deformation ball 410 can be controlled within 2%. In this way, not only can the dimensional changes of the seat 100 and the mounting carrier 200 caused by material shrinkage be compensated when the ambient temperature is below 10℃, but it can also avoid excessive movement resistance or even jamming of the mounting carrier 200 due to the excessive outer diameter of the controllable deformation ball 410 when the first conductive wall 310 and the second conductive wall 320 are in the energized state.
[0055] When the motor assembly 10 operates at an ambient temperature below 10°C, the controllable deformable ball bearing 410 deforms when the first conductive wall 310 and the second conductive wall 320 are energized. The outer diameter of the controllable deformable ball bearing 410 increases from d2 to d1. This deformation increases the gap between the base 100 and the mounting carrier 200, allowing the camera of the camera device 80 to function normally. When the first conductive wall 310 and the second conductive wall 320 are de-energized, the outer diameter of the controllable deformable ball bearing 410 returns to d2, thus ensuring the effectiveness and reliability of the motor assembly 10 operating at normal temperatures.
[0056] In some embodiments, such as Figure 4As shown, in the track wall of track 300, there are multiple first conductive walls 310 and second conductive walls 320. Each first conductive wall 310 is arranged opposite to a second conductive wall 320, and the controllable deformable ball 410 is located between the first conductive wall 310 and the second conductive wall 320.
[0057] In this embodiment, the track wall of track 300 has multiple first conductive walls 310 and multiple second conductive walls 320. That is, the track wall of track 300 includes multiple first conductive walls 310 and multiple second conductive walls 320, the number of first conductive walls 310 and second conductive walls 320 is equal, each first conductive wall 310 is opposite to one second conductive wall 320, and the controllable deformable ball 410 is located between the first conductive walls 310 and the second conductive walls 320.
[0058] The arrangement of the multiple first conductive walls 310 and multiple second conductive walls 320 is refined. Along the circumference of the controllable deformable ball 410, the multiple first conductive walls 310 are arranged sequentially, followed by the multiple second conductive walls 320. Alternatively, along the circumference of the controllable deformable ball 410, the multiple second conductive walls 320 are arranged sequentially, followed by the multiple first conductive walls 310. The first conductive walls 310 and second conductive walls 320 located on opposite sides of the controllable deformable ball 410 can be referred to as conductive wall groups, and each conductive wall group can independently power the controllable deformable ball 410. Multiple conductive wall assemblies enable multi-point clamping and power supply. Multiple conductive wall assemblies form a stable conductive circuit and disperse the current density. The controllable deformable ball 410 can obtain electrical energy and generate heat at multiple locations, obtain a more uniform current, improve the stability of power supply, and also keep the controllable deformable ball 410 in a proper position within the track 300, preventing the controllable deformable ball 410 from being misaligned and stuck.
[0059] In some embodiments, such as Figure 2 As shown, at least one of the base 100 and the mounting carrier 200 includes a first conductive structure 610, and at least one of the base 100 and the mounting carrier 200 includes a second conductive structure 620. A first conductive wall 310 is formed on one side end face of the first conductive structure 610, and a second conductive wall 320 is formed on one side end face of the second conductive structure 620.
[0060] In this embodiment, at least one of the base 100 and the mounting carrier 200 includes a first conductive structure 610. That is, the base 100 includes the first conductive structure 610, and one end face of the first conductive structure 610 forms a first conductive wall 310. Alternatively, the mounting carrier 200 includes the first conductive structure 610, and one end face of the first conductive structure 610 forms a first conductive wall 310. Alternatively, both the base 100 and the mounting carrier 200 include the first conductive structure 610, and one end face of the first conductive structure 610 forms a first conductive wall 310.
[0061] At least one of the base 100 and the mounting carrier 200 includes a second conductive structure 620. That is, the base 100 includes the second conductive structure 620, and one end face of the second conductive structure 620 forms a second conductive wall 320. Alternatively, the mounting carrier 200 includes the second conductive structure 620, and one end face of the second conductive structure 620 forms a second conductive wall 320. Alternatively, both the base 100 and the mounting carrier 200 include the second conductive structure 620, and one end face of the second conductive structure 620 forms a second conductive wall 320.
[0062] Therefore, it can be seen that a portion of the structure of at least one of the base 100 and the mounting carrier 200 forms the first conductive wall 310 and the second conductive wall 320, so that the track wall of the track 300 not only has the function of supporting the ball assembly 400, but also has the function of electrical conduction. There is no need to invest in other components to form the first conductive wall 310 and the second conductive wall 320, which helps to simplify the assembly process of the motor assembly 10 and ensures the compactness of the product structure.
[0063] For example, the first conductive structure 610 included in the base 100 can be assembled by embedding.
[0064] For example, if the mounting carrier 200 includes a second conductive structure 620, the second conductive structure 620 can be assembled by embedding.
[0065] In some embodiments, such as Figure 2 As shown, there are multiple first conductive structures 610 and multiple second conductive structures 620, with each track 300 corresponding to one first conductive structure 610 and one second conductive structure 620. The first conductive structure 610 includes multiple spaced first conductive plates 612, and the second conductive structure 620 includes multiple spaced second conductive plates 622. One end face of the first conductive plate 612 forms a first conductive wall 310, and one end face of the second conductive plate 622 forms a second conductive wall 320.
[0066] In this embodiment, there are multiple first conductive structures 610, multiple second conductive structures 620, and multiple tracks 300. The number of first conductive structures 610, second conductive structures 620, and tracks 300 are equal, and each track 300 corresponds to one first conductive structure 610 and one second conductive structure 620.
[0067] The first conductive structure 610 includes a plurality of first conductive plates 612, which are all located on the periphery of the controllable deformable ball 410. The plurality of first conductive plates 612 are arranged at intervals, and a first conductive wall 310 is formed on one end face of the first conductive plate 612.
[0068] The second conductive structure 620 includes a plurality of second conductive plates 622, all of which are located on the periphery of the controllable deformable ball 410. The plurality of second conductive plates 622 are arranged at intervals, and a second conductive wall 320 is formed on one end face of the second conductive plate 622.
[0069] Multiple first conductive walls 310 are arranged at intervals, and multiple second conductive walls 320 are arranged at intervals. That is to say, the track walls of the track 300 are not entirely formed by multiple first conductive walls 310 and multiple second conductive walls 320. In this way, while meeting the requirements for energizing the controllable deformable ball 410, the material input of the first conductive structure 610 and the second conductive structure 620 can be reduced, which helps to reduce the processing difficulty of the track 300 and the production cost of the motor assembly 10.
[0070] The gaps between two adjacent first conductive walls 310 and between two adjacent second conductive walls 320 can also provide a flow channel for the lubricating medium 500, so that the lubricating medium 500 can be evenly distributed in the track 300, thus ensuring the lubrication effect.
[0071] For example, at least a portion of the first conductive wall 310 is a planar wall.
[0072] For example, at least a portion of the second conductive wall 320 is a planar wall.
[0073] For example, at least a portion of the first conductive wall 310 is a curved wall.
[0074] For example, at least a portion of the second conductive wall 320 is a curved wall.
[0075] In some embodiments, such as Figure 2As shown, the inner surface of the base 100 has a plurality of protrusions 110, and the outer surface of the mounting carrier 200 has a plurality of recesses 210, with each protrusion 110 being disposed opposite to a recess 210; when the base 100 includes a first conductive structure 610 and the mounting carrier 200 includes a second conductive structure 620, the first conductive structure 610 is disposed on the protrusion 110 and the second conductive structure 620 is disposed on the recess 210.
[0076] In this embodiment, the inner surface of the seat 100 has a plurality of protrusions 110, and the outer surface of the mounting carrier 200 has a plurality of recesses 210. The number of protrusions 110 and the number of recesses 210 are equal, and each protrusion 110 is disposed opposite to a recess 210.
[0077] When the base 100 includes a first conductive structure 610 and the mounting carrier 200 includes a second conductive structure 620, the first conductive structure 610 is located on the protruding structure 110 and the second conductive structure 620 is located in the recess 210. This ensures the matching dimensions of the first conductive structure 610 and the second conductive structure 620, guarantees the effectiveness and reliability of the track 300 forming, and also ensures the rigidity of the track 300, providing stable support for the controllable deformation ball 410.
[0078] In some embodiments, such as Figure 2 and Figure 3 As shown, the motor assembly 10 further includes: a flexible circuit board 630 disposed on one of the base 100 and the mounting carrier 200, wherein the first conductive wall 310 and the second conductive wall 320 are both electrically connected to the flexible circuit board 630; a temperature sensor 640 electrically connected to the flexible circuit board 630, the temperature sensor 640 being used to detect the internal temperature of the motor assembly 10, and the detection data of the temperature sensor 640 being used to control the operation of the first conductive wall 310 and the second conductive wall 320; and a detection element 650 electrically connected to the flexible circuit board 630, the detection element 650 being used to detect the displacement of the mounting carrier 200.
[0079] In this embodiment, the motor assembly 10 also includes a flexible circuit board 630, a temperature sensor 640, and a detection element 650.
[0080] The flexible circuit board 630 is disposed in either the base 100 or the mounting carrier 200. That is, the flexible circuit board 630 is disposed in the base 100 or the mounting carrier 200. The base 100 and the mounting carrier 200 serve as the mounting structure for the flexible circuit board 630, and have the function of mounting and fixing the flexible circuit board 630.
[0081] The first conductive wall 310 is electrically connected to the flexible circuit board 630, and the second conductive wall 320 is electrically connected to the flexible circuit board 630.
[0082] Temperature sensor 640 is electrically connected to flexible circuit board 630 and is used to detect the internal temperature of motor assembly 10.
[0083] When the motor assembly 10 is working, the temperature sensor 640 is used to detect the internal temperature of the motor assembly 10. When the temperature detected by the temperature sensor 640 is lower than the preset temperature threshold (such as 10°C), the first conductive wall 310 and the second conductive wall 320 are powered through the flexible circuit board 630, and the controllable deformable ball 410 is also powered on. When powered on, the controllable deformable ball 410 can generate heat and deform. The heat is conducted to the lubricating medium 500 between the track 300 and the controllable deformable ball 410 and heats the lubricating medium 500, ensuring the lubrication characteristics of the lubricating medium 500 and ensuring the overall size of the motor assembly 10. This allows the motor assembly 10 to maintain the best working condition under different ambient temperatures, avoids jamming, and provides structural support for ensuring the performance of the camera device 80.
[0084] When the temperature detected by the temperature sensor 640 is greater than or equal to the preset temperature threshold (e.g., 10°C), it indicates that the internal temperature of the motor assembly 10 is within the normal operating range. The flexible circuit board 630 stops supplying power to the first conductive wall 310 and the second conductive wall 320, and the controllable deformable ball 410 stops generating heat and returns to its original shape, which can prevent increased power consumption and material aging due to overheating.
[0085] The detection element 650 is electrically connected to the flexible circuit board 630. The detection element 650 is used to detect the displacement of the mounting carrier 200 to determine the position of the mounting carrier 200 and provide data support to ensure the functionality of the camera device 80.
[0086] In some embodiments, such as Figure 2 As shown, when the flexible circuit board 630 is disposed on the base 100, the side wall of the base 100 has a notch 120, and the flexible circuit board 630 covers the notch 120; the motor assembly 10 also includes a reinforcing plate 660, which is stacked on one side of the flexible circuit board 630 and is connected to the base 100.
[0087] In this embodiment, when the flexible circuit board 630 is disposed on the base 100, the side wall of the base 100 has a notch 120, and the flexible circuit board 630 covers the notch 120. That is, the flexible circuit board 630 is located at the notch 120, and the notch 120 provides installation space for the flexible circuit board 630, so that the flexible circuit board 630 can be effectively electrically connected to the first conductive wall 310 and the second conductive wall 320.
[0088] The motor assembly 10 also includes a reinforcing plate 660, which is stacked on one side of the flexible circuit board 630 and connected to the base 100. The reinforcing plate 660 can reinforce the flexible circuit board 630 and prevent the flexible circuit board 630 from being damaged or failing due to suspension or stress at the notch 120. The reinforcing plate 660 can also improve the structural strength of the base 100 at the notch 120 and improve the overall structural reliability of the motor assembly 10.
[0089] For example, the reinforcing plate 660 includes stainless steel plates, plastic plates, etc., which will not be listed here.
[0090] In some embodiments, such as Figure 1 , Figure 2 and Figure 3 As shown, the motor assembly 10 also includes: a housing 670, which covers the base 100, and the mounting carrier 200 is located in the cavity enclosed by the housing 670 and the base 100; a coil 680; and a magnetic element 690, one of which is located on the mounting carrier 200 and the other on the base 100. When the coil 680 is energized, it cooperates with the magnetic element 690 to drive the mounting carrier 200 to move relative to the base 100.
[0091] In this embodiment, the motor assembly 10 also includes a housing 670, a coil 680, and a magnetic element 690.
[0092] The outer shell 670 is mounted on the base 100, and the mounting carrier 200 is located in the cavity enclosed by the outer shell 670 and the base 100. The outer shell 670 and the base 100 cooperate to protect the mounting carrier 200 located in the cavity.
[0093] One of the coil 680 and the magnetic component 690 is disposed on the mounting carrier 200, and the other is disposed on the base 100. The mounting carrier 200 serves as the mounting structure for one of the coil 680 and the magnetic component 690, and the base 100 serves as the mounting structure for the other of the coil 680 and the magnetic component 690, thus ensuring the mating dimensions of the coil 680 and the magnetic component 690.
[0094] When the coil 680 is mounted on the mounting carrier 200, the coil 680 can move relative to the base 100 along with the mounting carrier 200. Specifically, when the coil 680 is energized, a first magnetic field is generated around the coil 680, and a second magnetic field exists around the magnetic component 690. Under the interaction of the first and second magnetic fields, the coil 680 is driven by a thrust, thereby achieving the purpose of moving the mounting carrier 200 relative to the base 100.
[0095] When the magnetic component 690 is disposed on the mounting carrier 200, the magnetic component 690 can move relative to the base 100 along with the mounting carrier 200. Specifically, when the coil 680 is energized, a first magnetic field is generated around the coil 680, and a second magnetic field exists around the magnetic component 690. Under the interaction of the first and second magnetic fields, the magnetic component 690 is driven by a thrust, thereby achieving the purpose of moving the mounting carrier 200 relative to the base 100.
[0096] The camera device 80 according to some embodiments of this application includes: the motor assembly 10 of any of the above embodiments.
[0097] The camera device 80 according to the embodiments of this application includes the motor assembly 10 of the above embodiments, and therefore has all the beneficial effects of the motor assembly 10, which will not be described in detail here.
[0098] For example, the camera device 80 includes a camera mounted on the mounting carrier 200. The camera is exposed on the outer surface of the housing 670 through an opening in the housing 670.
[0099] like Figure 5 As shown, the electronic device 1 according to some embodiments of this application includes: a motor assembly 10 of any of the above embodiments; or a camera device 80 of the above embodiments.
[0100] The electronic device 1 according to the embodiments of this application includes the motor assembly 10 or the camera device 80 of the above embodiments, and therefore has all the beneficial effects of the motor assembly 10 or the camera device 80, which will not be described in detail here.
[0101] For example, electronic device 1 may be a mobile terminal such as a mobile phone, a wearable device, a tablet computer, a laptop computer, a mobile computer, an augmented reality device (also known as an AR (Augmented Reality) device), a virtual reality device (also known as a VR (Virtual Reality) device), and a handheld game console, etc.
[0102] For example, temperature sensor 640 and coil 680 are located on the same side of flexible circuit board 630. When camera device 80 starts operating, temperature sensor 640 detects the internal temperature of motor assembly 10 in real time.
[0103] For example, the first conductive plate 612 includes a copper plate. The second conductive plate 622 includes a copper plate. The first conductive plate 612 is in constant contact with the controllable deformable ball 410, and the second conductive plate 622 is in constant contact with the controllable deformable ball 410, so that the controllable deformable ball 410 is energized in real time when the first conductive wall 310 and the second conductive wall 320 are energized.
[0104] For example, the number of ball bearing sets 400 may include 2, 3, and 4, etc., which will not be listed here.
[0105] For example, when the ambient temperature is below 10°C, the detection data from the temperature sensor 640 is fed back to the controller of the electronic device 1, causing the controllable deformation ball bearing 410 to heat up, thus raising the temperature of the lubricating medium 500 and ensuring that the lubricating medium 500 is within its normal operating temperature range (greater than or equal to 10°C). Simultaneously, the volume of the controllable deformation ball bearing 410 increases, compensating for the shrinkage changes of the mounting carrier 200 and the base 100 when the ambient temperature is below 10°C. This ensures the accuracy and stability of the motor assembly 10's focusing.
[0106] For example, at least a portion of the mounting carrier 200 is made of plastic. At least a portion of the base 100 is made of plastic.
[0107] For example, the controllable deformation ball 410 includes a shape memory alloy ball 410a. For instance, the controllable deformation ball 410 is made of a shape memory alloy material. The temperature of the track 300 of the motor assembly 10 is not lower than the normal operating temperature of the lubricating medium 500, so that even when the ambient temperature of the motor assembly 10 is below 10°C, it can still maintain normal focusing or image stabilization functions. The mounting carrier 200 is embedded with a first conductive plate 612, the base 100 is embedded with a second conductive plate 622, and a temperature sensor 640 is placed inside the motor assembly 10. When the camera device 80 of the electronic device 1 performs the photo-taking function, the motor assembly 10 of the camera device 80 works. The temperature sensor 640 detects the internal temperature of the motor assembly 10. When the detected temperature is lower than the normal operating temperature range of the lubricating medium 500, the controllable deformation ball 410 itself has resistance. When the controllable deformation ball 410 is energized, it can generate heat. The heat generated by the controllable deformation ball 410 is conducted to the interior of the track 300 through the first conductive plate 612 and the second conductive plate 622 of the metal, ensuring the lubrication characteristics of the lubricating medium 500, thereby enabling the motor assembly 10 to work normally.
[0108] For example, when the ambient temperature of the motor assembly 10 is below 10°C, the controllable deformation ball 410 is energized, and the controllable deformation ball 410 expands to compensate for the dimensional changes caused by the shrinkage of the material of the seat 100 and the mounting carrier 200 when the ambient temperature is below 10°C, so that the camera device 80 can work normally when the ambient temperature is below 10°C.
[0109] For example, such as Figure 2As shown, the motor assembly 10 includes components such as a housing 670, a mounting carrier 200, a controllable deformable ball bearing 410, a first conductive plate 612, a second conductive plate 622, a magnet, a coil 680, a detection element 650, a temperature sensor 640, a reinforcing plate 660, a base 100, a support plate 700, and a flexible circuit board. The housing 670 is an iron shell. The magnet is a magnetic component 690. The detection element 650 includes a Hall sensor. The reinforcing plate 660 is a steel plate. The support plate 700 is a steel plate and is used to fix the coil 680. The flexible circuit board includes a flexible circuit board 630.
[0110] For example, the housing 670 serves to protect the components within the housing 670.
[0111] For example, the mounting carrier 200 serves to mount and fix the camera, and the mounting carrier 200 also serves to form part of the track wall of the track 300.
[0112] For example, the ball assembly 400 includes at least two controllable deformable balls 410. The number of ball assemblies 400 is at least two. Power is supplied to the first conductive plate 612 and the second conductive plate 622. When the controllable deformable balls 410 are energized, they provide heat to the track 300. The controllable deformable balls 410 deform when energized to compensate for dimensional changes caused by the shrinkage of the materials of the seat 100 and the mounting carrier 200 when the ambient temperature is below 10°C.
[0113] For example, the first conductive plate 612 has electrical and thermal conductivity properties. The first conductive plate 612 is injection molded into the recess 210 of the mounting carrier 200. The first conductive plate 612 supplies power to the controllable deformation ball 410. The first conductive plate 612 can also conduct heat to different positions of the track 300 to ensure the uniformity of heat distribution at the track 300.
[0114] For example, the first conductive plate 612 has electrical and thermal conductivity. The second conductive plate 622 is injection molded at the protrusion 110 of the base 100. The first conductive plate 612 supplies power to the controllable deformation ball 410, and the second conductive plate 622 can also conduct heat to different positions of the track 300 to ensure the uniformity of heat distribution at the track 300.
[0115] For example, the magnet is connected to the mounting carrier 200, and the electromagnetic force generated when the coil 680 is energized provides power for the movement of the mounting carrier 200.
[0116] For example, when the coil 680 is energized, the coil 680 interacts with the magnet to generate an electromagnetic force.
[0117] For example, the Hall sensor provides positioning data for the precise focusing of the motor assembly 10.
[0118] For example, temperature sensor 640 is used to sense the ambient temperature at the camera location.
[0119] For example, the support plate 700 is used to fix the coil 680.
[0120] For example, the seat 100 forms part of the track wall of the track 300, and the seat 100 also serves to protect the various components inside the seat 100.
[0121] For example, the reinforcing plate 660 is used to protect the flexible board.
[0122] For example, the flexible printed circuit board (FPCB) provides power to the motor assembly 10 and also serves to fix the Hall sensor and temperature sensor 640.
[0123] For example, the housing 670 and the base 100 are fixed together by adhesive, the reinforcing plate 660 is fixed to the flexible plate, the flexible plate is fixed at the notch 120 on the side of the base 100, the coil 680 is welded to the side of the flexible plate, the support plate 700 is glued to the coil 680, the Hall sensor and the temperature sensor 640 are welded to one side of the flexible plate, the magnet is fixed in the groove on the side of the mounting carrier 200, the magnet is facing the coil 680, the controllable deformable ball 410 is located in the track 300, the first conductive plate 612 of the mounting carrier 200 can support the movement of the controllable deformable ball 410, and the second conductive plate 622 of the base 100 can support the movement of the controllable deformable ball 410.
[0124] For example, the motor assembly 10 has two tracks 300 arranged symmetrically, and each track 300 contains a ball bearing assembly 400 that supports the movement of the mounting carrier 200. When the first conductive plate 612 and the second conductive plate 622 are energized, the controllable deformable ball bearing 410 provides heat to the track 300. The deformation of the controllable deformable ball bearing 410 when energized can compensate for the dimensional changes caused by the shrinkage of plastic parts such as the seat 100 and the mounting carrier 200 when the ambient temperature is below 10°C. The second conductive plate 622 is placed inside the seat 100, close to the protruding structure 110, and provides power to the controllable deformable ball bearing 410 and conducts heat. When the camera device 80 of the electronic device 1 performs the photo-taking function, the motor assembly 10 works, and the temperature sensor 640 detects the internal temperature of the motor assembly 10. When the temperature detected by the temperature sensor 640 is lower than the normal operating temperature range (greater than or equal to 10°C), in order to ensure the good lubrication characteristics of the lubricating medium 500, the first conductive plate 612 and the second conductive plate 622 on both sides of the track 300 are energized to supply power to the controllable deformation ball 410. The heat generated by the energized controllable deformation ball 410 is conducted to the vicinity of the track 300 through the second conductive plate 622 or the first conductive plate 612, so that the temperature of the lubricating medium 500 in the track 300 is uniform, ensuring that the lubricating medium 500 is always within the normal operating temperature range, ensuring the lubrication characteristics of the lubricating medium 500, so that the motor assembly 10 can still work normally even when the ambient temperature is lower than 10°C.
[0125] For example, the mounting carrier 200 is embedded with a first conductive plate 612, the base 100 is embedded with a second conductive plate 622, the controllable deformation ball 410 is made of shape memory alloy, the controllable deformation ball 410 is conductive, and the size of the controllable deformation ball 410 changes with temperature.
[0126] For example, the controllable deformable ball 410 remains smooth when energized, effectively supporting the mounting carrier 200.
[0127] For example, both the first conductive plate 612 and the second conductive plate 622 are in contact with the controllable deformable ball 410. When the first conductive plate 612 and the second conductive plate 622 are energized, the controllable deformable ball 410 generates heat, which is then rapidly diffused through the first conductive plate 612 and the second conductive plate 622 to the entire track wall of the track 300, ensuring that the lubricating medium 500 within the track 300 remains within its normal operating temperature range.
[0128] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., 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, the 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.
[0129] 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 motor assembly, characterized in that, include: seat body; An installation carrier is disposed within the base body. The installation carrier is movable relative to the base body. Multiple tracks are formed between the outer peripheral wall of the installation carrier and the inner peripheral wall of the base body. The multiple tracks are arranged around the installation carrier. The track wall includes a first conductive wall and a second conductive wall. The first conductive wall and the second conductive wall have a potential difference when energized. Multiple ball sets, each ball set located within one of the tracks, with the first conductive wall and the second conductive wall both in contact with the ball set, the ball set comprising multiple controllable deformable balls arranged along the height direction of the motor assembly; A lubricating medium is located between the controllable deformable ball and the track; The controllable deformable ball deforms and generates heat when the first conductive wall and the second conductive wall are energized, and recovers its deformation and stops generating heat when the first conductive wall and the second conductive wall are de-energized; wherein, the outer diameter of the controllable deformable ball when it deforms is larger than the outer diameter of the controllable deformable ball when it recovers its deformation.
2. The motor assembly according to claim 1, characterized in that, The controllable deformation ball includes shape memory alloy balls, wherein the phase transformation operating temperature of the shape memory alloy balls is greater than or equal to -20℃ and less than or equal to 70℃; and / or When the first conductive wall and the second conductive wall are energized, the outer diameter of the controllable deformation ball is d1; when the first conductive wall and the second conductive wall are de-energized, the outer diameter of the controllable deformation ball is d2, and (d1-d2) / d2≤2%.
3. The motor assembly according to claim 1 or 2, characterized in that, The track wall has multiple first conductive walls and multiple second conductive walls, with each first conductive wall opposite to one second conductive wall, and the controllable deformation ball located between the first conductive wall and the second conductive wall.
4. The motor assembly according to claim 1 or 2, characterized in that, At least one of the base and the mounting carrier includes a first conductive structure, and at least one of the base and the mounting carrier includes a second conductive structure, wherein a first conductive wall is formed on one end face of the first conductive structure, and a second conductive wall is formed on one end face of the second conductive structure.
5. The motor assembly according to claim 4, characterized in that, There are multiple first conductive structures and multiple second conductive structures, and each track corresponds to one first conductive structure and one second conductive structure; The first conductive structure includes a plurality of spaced first conductive plates, and the second conductive structure includes a plurality of spaced second conductive plates. One end face of the first conductive plate forms the first conductive wall, and one end face of the second conductive plate forms the second conductive wall.
6. The motor assembly according to claim 4, characterized in that, The inner surface of the base has multiple protrusions, and the outer surface of the mounting carrier has multiple recesses, with each protrusion opposite to one recess. When the base includes the first conductive structure and the mounting carrier includes the second conductive structure, the first conductive structure is disposed on the protruding structure and the second conductive structure is disposed on the recess.
7. The motor assembly according to claim 1 or 2, characterized in that, Also includes: A flexible circuit board is disposed on one of the base and the mounting carrier, wherein the first conductive wall and the second conductive wall are both electrically connected to the flexible circuit board. A temperature sensor is electrically connected to the flexible circuit board. The temperature sensor is used to detect the internal temperature of the motor assembly. The detection data of the temperature sensor is used to control the operation of the first conductive wall and the second conductive wall. A detection element, electrically connected to the flexible circuit board, is used to detect the displacement of the mounting carrier.
8. The motor assembly according to claim 7, characterized in that, When the flexible circuit board is disposed on the base, the side wall of the base has a notch, and the flexible circuit board covers the notch; The motor assembly also includes a reinforcing plate, which is stacked on one side of the flexible circuit board and connected to the base.
9. The motor assembly according to claim 1 or 2, characterized in that, Also includes: The outer shell covers the base, and the mounting carrier is located within the cavity enclosed by the outer shell and the base; coil; A magnetic component, wherein one of the coil and the magnetic component is disposed on the mounting carrier and the other is disposed on the base, wherein when the coil is energized, it cooperates with the magnetic component to drive the mounting carrier to move relative to the base.
10. A camera device, characterized in that, include: The motor assembly as described in any one of claims 1 to 9.
11. An electronic device, characterized in that, include: The motor assembly as described in any one of claims 1 to 9; or The camera device as described in claim 10.