Micro motor assembly and electronic device

Abstract

The embodiment of the present application provides a micro motor assembly and electronic equipment, which relates to the field of transmission technology and can effectively reduce the recoil effect on the micro motor and increase the service life of the micro motor. The micro motor assembly includes a micro motor and a transmission structure, the transmission structure includes a deformable elastic member, and the micro motor transmits torque through the elastic member to drive the driven component to move. The micro motor assembly provided in the embodiment of the present application can be used to provide power.

Description

Technical Field

[0001] The present application relates to the field of transmission technology, and in particular to a micro motor assembly and an electronic device. Background Art

[0002] A motor is an electromagnetic device that converts or transmits electrical energy according to the law of electromagnetic induction. The motor can convert electrical energy into mechanical energy. Its main function is to generate driving torque, and it serves as a power source for electrical appliances or various machines. A micromotor is a motor with a small size and capacity, an output power generally below a few hundred watts, and a motor with special requirements for use, performance, and environmental conditions. It is often used in control systems to realize functions such as detection, resolution, amplification, execution, or conversion of electromechanical signals or energy, or to transmit mechanical loads, and can also be used as an AC or DC power supply for equipment. For example, in some electronic devices today (such as mobile phones), when there is a need to drive components to move, due to internal space limitations, micromotors are used as power sources.

[0003] When a micro motor is used as a power source in an electronic device, a common transmission component (gear transmission or belt transmission, etc.) is provided between the output shaft of the micro motor and the component to be driven to realize the corresponding action of the component to be driven.

[0004] Since the transmission parts between conventional micro motors and the driven parts are in hard contact, when the movement of the driven parts is blocked, it will give the micro motor a large impact in the reverse direction, which may damage the internal components of the micro motor and reduce the service life of the micro motor. Summary of the invention

[0005] The embodiments of the present application provide a micro motor assembly and an electronic device, which can effectively reduce the recoil effect on the micro motor and increase the service life of the micro motor.

[0006] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions:

[0007] In the first aspect, the embodiment of the present application provides a micro motor assembly, including a micro motor and a transmission structure. Since the transmission structure includes a deformable elastic member, and the micro motor transmits torque through the elastic member to drive the driven component to move, thereby ensuring that the micro motor can normally drive the driven component to perform corresponding actions. When the movement of the driven component is blocked, the reverse impact on the micro motor will be absorbed by the deformable elastic member, thereby effectively reducing the recoil effect on the micro motor and increasing the service life of the micro motor.

[0008] Optionally, the transmission structure may further include a first transmission member, wherein the first end of the first transmission member is connected to the elastic member, the second end of the first transmission member is connected to the output shaft of the micromotor, and the torque is transmitted between the micromotor and the elastic member through the first transmission member. The torque is transmitted between the micromotor and the component to be driven through the elastic member, which may be directly connected to the output shaft of the micromotor through the elastic member to transmit the torque, or other structures may be added between the elastic member and the output shaft of the micromotor to indirectly transmit the torque. Since the output shaft of the micromotor is integrated with the micromotor, and the output shaft generally has a certain shape structure, the direct connection of the elastic member with the output shaft requires a significant improvement on the elastic member, or the installation operation is not easy. Therefore, an intermediate structure can be used to connect the two for easy installation. That is, a first transmission member is provided, the first end of the first transmission member is connected to the elastic member, and the second end of the first transmission member is connected to the output shaft, so that the torque is transmitted between the micromotor and the elastic member through the first transmission member.

[0009] Optionally, there are multiple connection modes between the first transmission member and the elastic member, such as clamping or welding, under the premise of ensuring that the torque can be transmitted.

[0010] Optionally, in order to facilitate installation and disassembly between the first transmission member and the output shaft of the micro motor, the first transmission member and the output shaft of the micro motor are detachably connected.

[0011] Optionally, the connection between the first transmission member and the output shaft of the micro motor can be: the end of the output shaft of the micro motor is a flat head structure, the first transmission member is provided with a groove corresponding to the flat head structure, the shape of the groove matches the cross-sectional outer contour of the flat head structure, and the flat head structure cooperates to extend into the groove. By setting the end of the output shaft of the micro motor to be a flat head structure, and setting a groove matching the cross-sectional outer contour of the flat head structure at a position corresponding to the flat head structure on the first transmission member, and the flat head structure cooperates to extend into the groove, the first transmission member and the output shaft of the micro motor can be detachably connected, and torque can be smoothly transmitted.

[0012] Optionally, the connection between the first transmission member and the output shaft of the micromotor can also be: the first transmission member is a sleeve structure, the output shaft of the micromotor extends into the sleeve structure, and the output shaft of the micromotor and the sleeve structure are connected by a key, or the output shaft of the micromotor and the sleeve structure are connected by a pin. The first transmission member is a sleeve structure, and the output shaft of the micromotor extends into the sleeve structure, which can be detachably connected by a key or a pin, and the torque can be smoothly transmitted.

[0013] Optionally, the transmission structure further includes a second transmission member, the first end of the second transmission member is connected to the elastic member, the second end of the second transmission member is connected to the component to be driven, and the torque is transmitted between the elastic member and the component to be driven through the second transmission member. The torque is transmitted between the micro motor and the component to be driven through the elastic member, which can be directly connected to the component to be driven by the elastic member to transmit the torque, or other structures can be added between the elastic member and the component to be driven to indirectly transmit the torque. The power output by the micro motor is generally a rotational torque with a certain speed and direction, and the final motion state required by the component to be driven is often different from the motion state output by the micro motor, which requires a corresponding transmission member to convert the motion mode. If the elastic member is directly connected to the component to be driven, the motion state of the component to be driven cannot be changed, and it is not easy to connect the corresponding transmission member. Therefore, a second transmission member is set, the first end of the second transmission member is connected to the elastic member, the second end of the second transmission member is connected to the component to be driven, and the torque is transmitted between the elastic member and the component to be driven through the second transmission member. The setting of the second transmission member facilitates the connection between the elastic member and the component to be driven.

[0014] Optionally, the second transmission member is snap-connected to the elastic member or the second transmission member is welded to the elastic member.

[0015] Optionally, in order to facilitate driving the component to be driven, the corresponding transmission component for changing the motion mode, speed or direction can be directly arranged on the second transmission member, or the transmission component (or a part thereof) can be directly used as the second transmission member and connected to the elastic member and the component to be driven respectively. For example, when the component to be driven is driven by a gear set, the second transmission member can be a gear.

[0016] Optionally, two guide blocks are fixedly arranged relative to the micro motor, the two guide blocks are arranged at intervals, the gear is arranged between the two guide blocks, and the distance between the two guide blocks matches the thickness of the gear. In this way, when the second transmission member is a gear, the two guide blocks can prevent the gear from moving along the axial direction when rotating.

[0017] Optionally, it further comprises a substrate fixed relative to the micro motor, and two guide blocks are arranged on the substrate. In order to facilitate the two guide blocks to be fixed relative to the micro motor, a substrate fixed relative to the micro motor can be arranged, and two guide blocks are arranged on the substrate.

[0018] Optionally, the transmission structure also includes a guide shaft fixed to the first transmission member, the guide shaft is located on the side of the first transmission member facing the second transmission member, and the second transmission member is provided with a matching hole corresponding to the guide shaft, the matching hole matches the radial outer contour of the guide shaft, and the end of the guide shaft extends into the matching hole and can rotate in the matching hole. The first transmission member and the second transmission member transmit torque through an elastic member. Due to the characteristic that the elastic member can be deformed when subjected to force, the rotation centers of the first transmission member and the second transmission member may be inconsistent during the transmission of torque, and a certain offset may occur. Therefore, a guide shaft can be set between the first transmission member and the second transmission member, one end of the guide shaft is fixed on the first transmission member and coincides with the axis of the output shaft of the micro motor, and the other end of the guide shaft extends into the matching hole of the second transmission member. Since the matching hole matches the radial outer contour of the guide shaft, and the guide shaft can rotate in the matching hole, the guide shaft can guide the movement of the second transmission member during the torque transmission process, avoiding the problem that the rotation centers of the first transmission member and the second transmission member are inconsistent and a certain offset occurs, making the transmission more reliable. In addition, optionally, the axis of the guide shaft can coincide with the axis of the output shaft of the micro motor to facilitate the transmission of torque.

[0019] Optionally, the elastic member can be a spring. Of course, when a spring is provided and a guide shaft is provided, the spring can be sleeved on the guide shaft to facilitate the installation of the spring. In addition, to facilitate the transmission of torque, the central axis of the spring can be coaxially arranged with the rotation axis of the output shaft of the micro motor.

[0020] Optionally, the spring is any one of a coil spring, a torsion bar spring, a gas spring and a rubber spring.

[0021] Optionally, the spring is formed by a spiral rotation of a metal wire, and the direction of the spiral rotation of the metal wire is consistent with the rotation direction of the output shaft of the micro motor when outputting torque. In this way, when the output shaft outputs torque, the spring is tightened more and more by force, is not easy to be damaged, and utilizes the transmission of torque; when the spring is subjected to reverse impact, the spring is twisted more and more outward, has a large deformation space, and has a good impact absorption effect.

[0022] Optionally, the first end of the spring wire extends along the axial direction of the output shaft of the micromotor toward the first transmission member, and the first transmission member is provided with a first slot corresponding to the first end of the spring wire, and the first end of the spring wire extends into the first slot; of course, if the straight line where the extension direction of the first end of the wire is located is collinear with the rotation axis of the output shaft of the micromotor, the wire needs to be fixed to the first transmission member to ensure the transmission efficiency of the torque. Therefore, the straight line where the extension direction of the first end of the wire is located can also be set to be non-collinear with the rotation axis of the output shaft of the micromotor, so that the first end of the wire only needs to extend into the first slot and can transmit the torque normally without being fixed; of course, under the premise that the first end of the wire extends into the first slot, the first end of the wire can be further fixed to the first slot (for example, welded) to ensure a secure fixation.

[0023] The second end of the metal wire of the spring extends toward the second transmission member along the axial direction of the output shaft of the micro motor, and the second transmission member is provided with a second slot corresponding to the second end of the metal wire of the spring, and the second end of the metal wire of the spring extends into the second slot. Similarly, if the straight line where the extension direction of the second end of the metal wire is located is collinear with the rotation axis of the output shaft of the micro motor, the metal wire needs to be fixed to the output shaft of the micro motor to ensure the transmission efficiency of the torque. Therefore, it is also possible to set the straight line where the extension direction of the second end of the metal wire is located to be non-collinear with the rotation axis of the output shaft of the micro motor, so that the second end of the metal wire only needs to extend into the second slot, and the torque can be normally transmitted without being fixed; of course, under the premise that the second end of the metal wire extends into the second slot, the second end of the metal wire can be further fixed to the second slot (for example, welded) to ensure that it is firmly fixed. That is, the two ends of the spring are respectively connected to the first transmission member and the second transmission member, which can be clamped and / or welded. Generally, the two ends of the spring can be flat, respectively welded and fixed to the first transmission member and the second transmission member, or the two ends of the spring can be respectively extended toward the first transmission member and the second transmission member, which can be clamped or welded. Among them, the reliability of torque transmission in the solution of flat end face welding is only guaranteed by the reliability of welding, while in the solution where the two ends of the spring are extended for clamping or welding, the cooperation between the two ends of the spring and the corresponding clamping grooves can provide a force point for transmitting torque. As long as the structure is formed, the torque can be transmitted without relying on the reliability of welding.

[0024] Optionally, the straight line where the extension direction of the first end of the metal wire lies and the straight line where the extension direction of the second end lies are collinear. The two ends of the metal wire are collinear, so that the force and output force of the spring are collinear, which facilitates torque transmission.

[0025] Optionally, the elastic member is an elastic tube shaft made of elastic material. The elastic member can be an elastic tube shaft, such as a transmission shaft made of rubber material, etc. In addition, the central axis of the elastic tube shaft can be coaxially arranged with the rotation axis of the output shaft of the micro motor.

[0026] Optionally, the elastic member includes a plurality of spring sheets made of elastic material, and the plurality of spring sheets are evenly spaced in the circumferential direction of the rotation axis of the output shaft of the micro motor. The elastic member can also be a spring sheet, such as a plurality of elastic sheets or rods made of metal material.

[0027] In a second aspect, an embodiment of the present application provides an electronic device, including a shell, and a camera assembly arranged in the shell, wherein a micro motor assembly as described in any of the above technical solutions is arranged in the shell, and the micro motor assembly is transmission-connected to the camera assembly to drive the camera assembly to move relative to the shell.

[0028] The electronic device provided in the embodiment of the present application has a micro motor assembly according to any of the above technical solutions arranged in the housing, and the micro motor assembly is transmission-connected to the camera assembly, thereby driving the camera assembly to move relative to the housing. Since the micro motor assembly according to any of the above technical solutions is arranged in the housing, the recoil effect on the micro motor can be effectively reduced, and the service life of the micro motor can be increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of the structure of a micro motor assembly provided in an embodiment of the present application;

[0030] Figure 2 A schematic diagram of the exploded structure of a micro motor assembly provided in an embodiment of the present application;

[0031] Figure 3 A schematic diagram of the exploded structure of the transmission structure in the micro motor assembly provided in an embodiment of the present application.

[0032] Reference numerals:

[0033] 1-micro motor; 11-output shaft; 111-flat head structure; 2-transmission structure; 21-elastic member; 22-first transmission member; 221-groove; 222-first card slot; 23-second transmission member; 231-matching hole; 232-second card slot; 24-guide shaft; 3-guide stopper; 4-base plate; 5-driven gear. DETAILED DESCRIPTION

[0034] Reference Figure 1 , Figure 2 and Figure 3An embodiment of the present application provides a micro motor assembly, including a micro motor 1 and a transmission structure 2, wherein the transmission structure 2 includes a deformable elastic member 21, and torque is transmitted between the micro motor 1 and a component to be driven (not shown in the figure) through the elastic member 21.

[0035] The micro motor assembly provided in the embodiment of the present application includes a micro motor 1 and a transmission structure 2. Since the transmission structure 2 includes a deformable elastic member 21, and the micro motor 1 transmits torque through the elastic member 21 to drive the driven component to move, it is ensured that the micro motor 1 can normally drive the driven component to perform corresponding actions (such as rotation and translation, etc.). When the movement of the driven component is blocked, the reverse impact on the micro motor 1 will be absorbed by the deformable elastic member 21, thereby effectively reducing the recoil effect on the micro motor 1 and improving the service life of the micro motor 1.

[0036] The torque is transmitted between the micro motor 1 and the driven component through the elastic member 21. The torque can be transmitted by directly connecting the elastic member 21 to the output shaft 11 of the micro motor 1, or other structures can be added between the elastic member 21 and the output shaft 11 of the micro motor 1 to indirectly transmit the torque. The output shaft 11 of the micro motor 1 can be integrated with the micro motor 1, and the output shaft 11 generally has a certain shape and structure. The direct connection between the elastic member 21 and the output shaft 11 requires a significant improvement on the elastic member 21, or the installation operation is not easy. Therefore, an intermediate structure can be used to connect the two for easy installation. Figure 2 and Figure 3 As shown, the transmission structure 2 also includes a first transmission member 22, a first end of the first transmission member 22 is connected to the elastic member 21, a second end of the first transmission member 22 is connected to the output shaft 11 of the micro motor 1, and the torque is transmitted between the micro motor 1 and the elastic member 21 through the first transmission member 22. In this way, the first transmission member 22 is provided, the first end of the first transmission member 22 is connected to the elastic member 21, and the second end of the first transmission member 22 is connected to the output shaft 11, so that the torque is transmitted between the micro motor 1 and the elastic member 21 through the first transmission member 22. The structure of the first transmission member 22 can be set according to the need to connect with the output shaft 11 of the micro motor 1, which will not affect the shape and structure of the original output shaft 11 and the elastic member 21, and can also facilitate installation and operation.

[0037] After the first transmission member 22 is provided, there are a variety of connection methods between the first transmission member 22 and the elastic member 21, such as clamping or welding, on the premise of ensuring that torque can be transmitted.

[0038] The connection between the first transmission member 22 and the output shaft 11 of the micro motor 1 can be a non-detachable connection or a detachable connection. In comparison, the detachable connection method is convenient for installation and disassembly, which is beneficial to the replacement and maintenance of components. Therefore, in order to facilitate the installation and disassembly between the first transmission member 22 and the output shaft 11 of the micro motor 1, the first transmission member 22 and the output shaft 11 of the micro motor 1 are detachably connected.

[0039] There are many ways to connect the first transmission member 22 to the output shaft 11 of the micro motor 1. In some embodiments, for example Figure 1 and Figure 2 As shown, the end of the output shaft 11 of the micro motor 1 is a flat head structure 111, and the first transmission member 22 is provided with a groove 221 corresponding to the flat head structure. The shape of the groove 221 matches the cross-sectional outer contour of the flat head structure 111, and the flat head structure 111 cooperates to extend into the groove 221. By setting the end of the output shaft 11 of the micro motor 1 to be the flat head structure 111, and setting the groove 221 matching the cross-sectional outer contour of the flat head structure 111 at a position corresponding to the flat head structure 111 on the first transmission member 22, and the flat head structure 111 cooperates to extend into the groove 221, the first transmission member 22 and the output shaft 11 of the micro motor 1 can be detachably connected, and the torque can be smoothly transmitted.

[0040] In some embodiments, the detachable connection between the first transmission member 22 and the output shaft 11 of the micro motor 1 can also be achieved by a key or pin connection. Specifically, the first transmission member 22 is a sleeve structure, and the output shaft 11 of the micro motor 1 extends into the sleeve structure. The output shaft 11 of the micro motor 1 is connected to the sleeve structure by a key, or the output shaft 11 of the micro motor 1 is connected to the sleeve structure by a pin, so that the torque can be smoothly transmitted.

[0041] The torque is transmitted between the micro motor 1 and the component to be driven through the elastic member 21. The torque can be transmitted by directly connecting the elastic member 21 to the component to be driven, or other structures can be added between the elastic member 21 and the component to be driven to indirectly transmit the torque. The power output by the micro motor 1 is generally a rotational torque with a certain speed and direction, and the final motion state required by the component to be driven is often different from the motion state output by the micro motor 1, which requires corresponding transmission components to convert the motion mode. If the elastic member 21 is directly connected to the component to be driven, the motion state of the component to be driven cannot be changed, and it is not easy to connect with the corresponding transmission component. Therefore, if Figure 2 and Figure 3As shown, the transmission structure 2 further includes a second transmission member 23, a first end of the second transmission member 23 is connected to the elastic member 21, a second end of the second transmission member 23 is connected to the component to be driven, and torque is transmitted between the elastic member 21 and the component to be driven through the second transmission member 23. The second transmission member 23 is provided, a first end of the second transmission member 23 is connected to the elastic member 21, a second end of the second transmission member 23 is connected to the component to be driven, and torque is transmitted between the elastic member and the component to be driven through the second transmission member 23. In this way, the second transmission member 23 can be set to any structure that can change the motion state of the component to be driven, realize the pre-motion state of the component to be driven, and the second transmission member 23 can facilitate the connection between the elastic member 21 and the component to be driven.

[0042] Similar to the connection method between the first transmission member 22 and the elastic member 21 , the second transmission member 23 and the elastic member 21 can be connected by clamping or welding to ensure the transmission of torque.

[0043] In order to facilitate driving the driven component, the corresponding transmission component for changing the motion mode, speed or direction can be directly arranged on the second transmission member 23, or the transmission component (or a part thereof) can be directly used as the second transmission member 23 and connected to the elastic member 21 and the driven component respectively. Figure 1 and Figure 2 As shown, when the component to be driven is driven by a gear set, the second transmission member 23 can be a gear.

[0044] It should be noted that there are many ways to implement transmission components that change the movement mode, speed or direction, such as multiple gear meshing transmission, gear rack transmission and belt transmission, etc. Correspondingly, these transmission components can be set on the second transmission member 23, or the second transmission member 23 is one of these transmission components.

[0045] When the second transmission member 23 is a gear, a common way to fix the gear is to insert a shaft through the central connecting hole of the gear, and drive the gear to rotate by rotating the shaft. In this way, when the gear rotates, its axial direction is not positioned, and the gear is prone to displacement along its thickness direction, and may then fall off the shaft. Therefore, in some embodiments, positioning structures are provided at both ends of the gear in the thickness direction to prevent the gear from moving in the thickness direction. For example, the shaft has a shoulder, and a retaining spring may be provided at the shaft end, or, as Figure 1 and Figure 2 As shown, it also includes two guide blocks 3 fixedly arranged relative to the micro motor 1, the two guide blocks 3 are arranged at intervals, the gear is arranged between the two guide blocks 3, and the distance between the two guide blocks 3 matches the thickness of the gear. This can prevent the gear from moving along the axial direction when rotating.

[0046] The two guide blocks 3 located on both sides of the gear axial direction need to be fixed relative to the micro motor 1 and not fixed to the gear. In order to facilitate the arrangement of the two guide blocks 3, as shown in FIG. Figure 1 and Figure 2 As shown, it also includes a substrate 4 fixed relatively to the micro motor 1, and two guide stops 3 are arranged on the substrate 4. By setting the substrate 4, the two guide stops 3 are fixed on the substrate 4, or are integrally formed with the substrate 4, and then fixed to other positions through the substrate 4, so that the two guide stops 3 are relatively fixed to the micro motor 1.

[0047] like Figure 2 and Figure 3 As shown, in some embodiments, the transmission structure 2 also includes a guide shaft 24 fixed to the first transmission member 22, the axis of the guide shaft 24 coincides with the axis of the output shaft 11 of the micro motor 1, and the guide shaft 24 is located on the side of the first transmission member 22 facing the second transmission member 23. The second transmission member 23 is provided with a matching hole 231 corresponding to the guide shaft 24, and the matching hole 231 matches the radial outer contour of the guide shaft 24. The end of the guide shaft 24 extends into the matching hole 231 and can rotate in the matching hole 231. The torque is transmitted between the first transmission member 22 and the second transmission member 23 through the elastic member 21. Since the elastic member 21 can be deformed when subjected to force, the rotation centers of the first transmission member 22 and the second transmission member 23 may be inconsistent and offset in the process of transmitting the torque. Therefore, a guide shaft 24 can be set between the first transmission member 22 and the second transmission member 23. One end of the guide shaft 24 is fixed on the first transmission member 22, and the axis of the guide shaft 24 coincides with the axis of the output shaft 11 of the micro motor 1. The other end of the guide shaft 24 extends into the matching hole 231 of the second transmission member 23. Since the matching hole 231 matches the radial outer contour of the guide shaft 24, and the guide shaft 24 can rotate in the matching hole 231, during the torque transmission process, the guide shaft 24 can guide the movement of the second transmission member 23, avoiding the problem of inconsistent rotation centers of the first transmission member 22 and the second transmission member 23 and offset, making the transmission more reliable.

[0048] The elastic member 21 can be realized in various ways, such as a spring, a spring sheet, an elastic column, etc., and its material can be a metal material or a rubber material with elasticity, etc.

[0049] In some embodiments, the elastic member 21 is a spring, and the central axis of the spring is coaxially arranged with the rotation axis of the output shaft 11 of the micro motor 1 .

[0050] It should be noted that, when the elastic member 21 is a spring and the transmission structure 2 has a guide shaft 24, the spring can be sleeved on the guide shaft 24 to facilitate the installation of the spring.

[0051] The spring may be any one of a coil spring, a torsion bar spring, a gas spring and a rubber spring.

[0052] like Figure 1 , Figure 2 and Figure 3 As shown, the spring is formed by spiral rotation of a metal wire, so that the spiral rotation of the metal wire of the spring has a certain direction. In the process of transmitting torque, the deformation of the spring is different according to the direction of the torque or impact received by the spring. Figure 1 , Figure 2 and Figure 3 As shown, the direction of the spiral rotation of the metal wire of the spring is consistent with the direction of rotation when the output shaft 11 of the micro motor 1 outputs torque. In this way, when the output shaft 11 outputs torque, the spring is tightened more and more by force, not easy to be damaged, and the torque transmission is utilized; when the spring is subjected to reverse impact, the spring is twisted more and more outward, the deformation space is large, and the impact absorption effect is good.

[0053] The two ends of the spring are respectively connected to the first transmission member 22 and the second transmission member 23, and can be clamped or welded. Generally, the two ends of the spring can be flat and respectively welded to the first transmission member 22 and the second transmission member 23, or the two ends of the spring can be extended toward the first transmission member 22 and the second transmission member 23, respectively, and can be clamped or welded. Among them, the reliability of torque transmission in the flat end face welding scheme is only guaranteed by the reliability of welding, while in the scheme where the two ends of the spring are extended to be clamped or welded, the cooperation between the two ends of the spring and the corresponding slots can provide a force point for transmitting torque. As long as the structure is formed, the torque can be transmitted without relying on the reliability of welding. Therefore, if Figure 2 and Figure 3As shown, the first end of the metal wire of the spring extends toward the first transmission member 22 along the axial direction of the output shaft 11 of the micro motor 1, and the straight line where the first end of the metal wire extends is non-collinear with the rotation axis of the output shaft 11 of the micro motor 1. The first transmission member 22 is provided with a first slot 222 corresponding to the first end of the metal wire of the spring, and the first end of the metal wire of the spring extends into the first slot 222; the second end of the metal wire of the spring extends toward the second transmission member 23 along the axial direction of the output shaft 11 of the micro motor 1, and the straight line where the second end of the metal wire extends is non-collinear with the rotation axis of the output shaft 11 of the micro motor 1. The second transmission member 23 is provided with a second slot 232 corresponding to the second end of the metal wire of the spring, and the second end of the metal wire of the spring extends into the second slot 232. In this way, as long as the first end of the metal wire extends into the first slot 222 and the second end of the metal wire extends into the second slot 232, the torque can be transmitted without relying on the reliability of welding. In addition, since both the first transmission member 22 and the second transmission member 23 rely on rotation to transmit torque, if the first end of the metal wire is arranged in a colinear manner with the rotation axis of the output shaft 11 of the micro motor 1, there is basically no rotational displacement in the circumferential direction at the rotation axis, which may cause the rotational torque of the first transmission member 22 to be unable to be correctly transmitted to the spring; similarly, if the second end of the spring is arranged in a colinear manner with the rotation axis of the output shaft 11 of the micro motor 1, the rotational torque of the spring may be unable to be correctly transmitted to the second transmission member 23, causing the second transmission member 23 to be unable to rotate or to rotate eccentrically. Therefore, the straight lines where the first end of the metal wire and the second end of the metal wire extend are arranged non-colinearly with the rotation axis of the output shaft 11 of the micro motor 1 to ensure that the spring can rotate correctly to transmit torque.

[0054] The straight line where the extension direction of the first end of the metal wire is located and the straight line where the extension direction of the second end of the metal wire is located can be collinear or non-collinear. The collinear setting is convenient for manufacturing and installation, and the force point and the output force point of the spring are located on the same straight line, which is conducive to the transmission of torque. Therefore, if Figure 2 and Figure 3 As shown, the straight line where the extension direction of the first end of the metal wire is located and the straight line where the extension direction of the second end of the metal wire is located are collinear.

[0055] In some embodiments, the elastic member 21 is an elastic tube shaft made of elastic material, and the central axis of the elastic tube shaft is coaxially arranged with the rotation axis of the output shaft 11 of the micro motor 1. The elastic member 21 can be an elastic tube shaft, such as a transmission shaft made of rubber material.

[0056] It should be noted that the elastic tubular shaft made of rubber material has a deformability and a certain rigidity strength, which can meet the requirements of torque transmission and reverse impact absorption. Its deformability and rigidity strength are also optional, for example, the selection of elastic properties of specific materials or the setting of shape and structure. Regarding the shape and structure, for example, if better rigidity strength is required, it can be a solid elastic shaft, and if better deformability is required, it can be a hollow elastic shaft.

[0057] In some embodiments, the elastic member 21 includes a plurality of springs made of elastic material, and the plurality of springs are evenly spaced in the circumferential direction of the rotation axis of the output shaft 11 of the micro motor 1. The elastic member 21 may also be springs, such as a plurality of elastic sheets or rods made of metal material.

[0058] In addition, an embodiment of the present application provides an electronic device, including a shell, and a camera assembly arranged in the shell, wherein a micro motor assembly as described in any of the above technical solutions is provided in the shell, and the micro motor assembly is transmission-connected to the camera assembly to drive the camera assembly to move relative to the shell.

[0059] The electronic device provided in the embodiment of the present application has a micro motor assembly according to any of the above technical solutions arranged in the housing, and the micro motor assembly is transmission-connected to the camera assembly, thereby driving the camera assembly to move relative to the housing. Since the micro motor assembly according to any of the above technical solutions is arranged in the housing, the recoil effect on the micro motor can be effectively reduced, and the service life of the micro motor can be increased.

[0060] It should be noted that the embodiment of the present application provides an electronic device, in which a micro-motor assembly as any of the above technical solutions is provided in the shell, and the camera assembly can be the aforementioned component to be driven, and the micro-motor 1 of the micro-motor assembly is connected to the driving camera assembly through the transmission structure 2 to drive the camera assembly to move. Specifically, the electronic device can be a mobile phone, a tablet, a laptop computer, an e-reader, etc. The solution of the micro-motor assembly driving the camera assembly to move is common in mobile phones. In order to ensure that the screen ratio of the front full screen is high enough and improve the aesthetics, some mobile phones choose to cancel the front camera from the front, and the camera assembly is arranged in the mobile phone shell. When necessary, the camera assembly is extended from the side of the mobile phone through the micro-motor assembly. When the camera is not used, the camera assembly is retracted into the mobile phone shell. In addition, the above micro-motor assembly drives the camera assembly to move, which is only an example of the application of the micro-motor assembly in the electronic device. When necessary, the micro-motor assembly can be applied to any system that needs to provide power, for example, to drive the shell to flip, or to drive the heat exchange fan in the device to rotate. In one embodiment, the shell and the heat exchange fan can be components to be driven. Specifically, the micro motor 1 is connected to the housing to be flipped through the transmission structure 2 to drive the housing to flip, or the micro motor 1 is connected to the heat exchange fan through the transmission structure 2 to drive the heat exchange fan to rotate. In this way, while ensuring normal driving requirements, the recoil effect on the micro motor can also be effectively reduced, thereby increasing the service life of the micro motor.

[0061] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A micro motor assembly, characterized in that: It comprises a micro motor and a transmission structure, wherein the transmission structure comprises a deformable elastic member, and the micro motor transmits torque through the elastic member to drive the driven component to move; The transmission structure further includes a first transmission member, a first end of the first transmission member is connected to the elastic member, a second end of the first transmission member is connected to the output shaft of the micro motor, the output shaft and the micro motor are integrated, and torque is transmitted between the micro motor and the elastic member through the first transmission member; The transmission structure further includes a second transmission member, a first end of the second transmission member is connected to the elastic member, a second end of the second transmission member is connected to the component to be driven, and torque is transmitted between the elastic member and the component to be driven via the second transmission member; The second transmission member is a gear; It also includes two guide blocks fixedly arranged relative to the micro motor, the two guide blocks are arranged at intervals, the gear is arranged between the two guide blocks, and the distance between the two guide blocks matches the thickness of the gear; The guide stopper is not fixed to the gear.

2. The micro motor assembly according to claim 1, characterized in that: The first transmission member is connected to the elastic member by snapping or welding.

3. The micro motor assembly according to claim 1 or 2, characterized in that: The first transmission member is detachably connected to the output shaft of the micro motor.

4. The micro motor assembly according to claim 1, characterized in that: The end of the output shaft of the micro motor is a flat head structure, and the first transmission member is provided with a groove corresponding to the flat head structure. The shape of the groove matches the cross-sectional outer contour of the flat head structure, and the flat head structure fits into the groove.

5. The micro motor assembly according to claim 1, characterized in that: The first transmission member is a sleeve structure, the output shaft of the micro motor extends into the sleeve structure, the output shaft of the micro motor is connected to the sleeve structure via a key, or the output shaft of the micro motor is connected to the sleeve structure via a pin.

6. The micro motor assembly according to claim 1, characterized in that: The second transmission member is connected to the elastic member by snapping or welding.

7. The micro motor assembly according to claim 1 or 6, characterized in that: The transmission structure also includes a guide shaft fixed to the first transmission member, the guide shaft is located on the side of the first transmission member facing the second transmission member, the second transmission member is provided with a matching hole corresponding to the guide shaft, the matching hole matches the radial outer contour of the guide shaft, and the end of the guide shaft extends into the matching hole.

8. The micro motor assembly according to claim 1, characterized in that: The elastic member is a spring.

9. The micro motor assembly according to claim 8, characterized in that: The spring is formed by a spiral rotation of a metal wire, and the direction of the spiral rotation of the metal wire is consistent with the rotation direction of the output shaft of the micro motor when outputting torque.

10. The micro motor assembly according to claim 8, characterized in that: The first end of the metal wire of the spring extends toward the first transmission member along the axial direction of the output shaft of the micro motor, and the first transmission member is provided with a first slot corresponding to the first end of the metal wire of the spring, and the first end of the metal wire of the spring extends into the first slot; The second end of the spring wire extends toward the second transmission member along the axial direction of the output shaft of the micromotor. The second transmission member is provided with a second slot corresponding to the second end of the spring wire. The second end of the spring wire extends into the second slot.

11. The micro motor assembly according to claim 10, characterized in that: The straight line where the first end of the metal wire extends and the straight line where the second end of the metal wire extends are collinear.

12. The micro motor assembly according to claim 1 or 2, characterized in that: The elastic member is an elastic tube shaft made of elastic material.

13. The micro motor assembly according to claim 1 or 2, characterized in that: The elastic member comprises a plurality of spring sheets made of elastic material, and the plurality of spring sheets are evenly spaced and arranged in a circumferential direction of the rotation axis of the output shaft of the micro motor.

14. An electronic device, comprising a housing, and a camera assembly disposed in the housing, characterized in that: The housing is provided with a micro motor assembly according to any one of claims 1 to 13, and the micro motor assembly is transmission-connected to the camera assembly to drive the camera assembly to move relative to the housing.

Images