WO2020233580A1

WO2020233580A1 - Micro-motor assembly and electronic apparatus

Info

Publication number: WO2020233580A1
Application number: PCT/CN2020/091174
Authority: WO
Inventors: 王升超; 邢冲; 王大为; 刘国庆
Original assignee: 华为技术有限公司
Priority date: 2019-05-23
Filing date: 2020-05-20
Publication date: 2020-11-26
Also published as: CN110266144A

Abstract

The present invention relates to the field of transmission techniques. Provided in embodiments of the present invention are a micro-motor assembly and an electronic apparatus capable of effectively mitigating a reverse impact on a micro-motor, thereby extending service life of the micro-motor. The micro-motor assembly comprises a micro-motor and a transmission structure. The transmission structure comprises a deformable elastic member. The micro-motor transfers a torque by means of the elastic member so as to drive a component to be driven to move. The micro-motor assembly provided in the embodiment of the present invention can supply power.

Description

Micro-motor assembly and electronic equipment

This application claims the priority of the Chinese patent application filed with the State Intellectual Property Office of China with the application number 201910435807.0, and the priority of the Chinese patent application with the title of "a kind of micro-motor assembly and electronic equipment" on May 23, 2019. The entire content is incorporated into this application by reference.

Technical field

This application relates to the field of transmission technology, and in particular to a micro-motor assembly and electronic equipment.

Background technique

Motor refers to an electromagnetic device that realizes the conversion or transmission of electric energy according to the law of electromagnetic induction. The motor can convert electrical energy into mechanical energy, and its main function is to generate driving torque as a power source for electrical appliances or various machinery. A micro motor is a motor with a small volume, a small capacity, and 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, calculation, amplification, execution or conversion of electromechanical signals or energy, or to drive mechanical loads. It can also be used as AC and DC power supplies for equipment. For example, in some electronic devices (mobile phones, etc.) nowadays, when there is a need to drive components to move, due to internal space constraints, micro motors are used as power sources.

When a micro motor is set as a power source in an electronic device, the general setting method is: a common transmission component (gear drive or belt transmission, etc.) is set 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 .

Since the transmission parts between the conventional micro motor and the component to be driven are in hard contact, when the movement of the component to be driven is blocked, it will reversely give the micro motor a larger impact, which may damage the internal components of the micro motor, resulting in micro The service life of the motor is reduced.

Summary of the invention

The embodiments of the present application provide a micro-motor assembly and electronic equipment, which can effectively reduce the recoil effect of the micro-motor and improve the service life of the micro-motor.

In order to achieve the foregoing objectives, the embodiments of the present application adopt the following technical solutions:

In the first aspect, the embodiments of the present application provide a micro-motor assembly, including 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 component to be driven to move. Ensure that the micro motor can normally drive the components to be driven to make corresponding actions. When the movement of the component to be driven is blocked, the reverse impact to the micro motor will be absorbed by the deformable elastic member, which can effectively reduce the recoil effect of the micro motor and increase the service life of the micro motor.

Optionally, the transmission structure may further include a first transmission member. 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 of the micro motor. Torque is transmitted through the first 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 output shaft of the micro motor through the elastic member to transmit the torque, or it can be indirect by adding other structures between the elastic member and the output shaft of the micro motor Transfer torque. Since the output shaft of the micro motor is integrated with the micro motor, and the output shaft generally has a definite shape and structure, the direct connection of the elastic member with the output shaft requires a major improvement on the elastic member, or the installation operation is not easy. Therefore, an intermediate structure can be used to connect the two to facilitate installation. That is, a first transmission member is provided, the first end of the first transmission member is connected with the elastic member, and the second end of the first transmission member is connected with the output shaft, so that the micromotor and the elastic member transmit torque through the first transmission member.

Optionally, on the premise that the torque can be transmitted between the first transmission member and the elastic member, there are multiple connection methods, such as clamping or welding.

Optionally, in order to facilitate the 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.

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

Optionally, the connection between the first transmission member and the output shaft of the micro motor may also be: the first transmission member is a sleeve structure, the output shaft of the micro motor extends into the sleeve structure, and the output shaft of the micro motor It is connected with the sleeve structure through a key, or the output shaft of the micro motor is connected with the sleeve structure through a pin. The first transmission member is a sleeve structure, and the output shaft of the micro motor extends into the sleeve structure, and can be detachably connected by a key or pin, and can transmit torque smoothly.

Optionally, the transmission structure further includes a second transmission member, the first end of the second transmission member is connected with the elastic member, and the second end of the second transmission member is connected with the member to be driven. The two transmission parts transmit torque. The torque between the micromotor and the component to be driven can be transmitted through the elastic member, which can be directly connected with the component to be driven through 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 a micro motor is generally a rotational torque with a certain speed and direction, and the final motion state required by the components to be driven is often different from the motion state output by the micro motor, which requires corresponding transmission components to transform the motion mode. If the elastic member is directly connected to the component to be driven, the movement 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 provided, and the first end of the second transmission member is connected to the elastic member. The second ends of the two transmission parts are connected with the part to be driven, and the second transmission part transmits torque between the elastic part and the part to be driven. The arrangement of the second transmission member facilitates the connection between the elastic member and the component to be driven.

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

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 component, or the transmission component (or part of it) can be directly used as The second transmission part is respectively connected with the elastic part and the part to be driven. For example, when the component to be driven is driven by a gear set, the second transmission member may be a gear.

Optionally, it also includes two guide stoppers fixedly arranged relative to the micro motor, the two guide stoppers are arranged at intervals, the gear is arranged between the two guide stoppers, and the distance between the two guide stoppers is equal to that of the gear Match the thickness. In this way, when the second transmission member is a gear, the two guide stoppers can prevent the gear from moving in the axial direction when the gear rotates.

Optionally, it also includes a substrate relatively fixed to the micromotor, and two guide stoppers are arranged on the substrate. In order to facilitate the relative fixation of the two guide stoppers and the micromotor, a substrate fixed relatively to the micromotor can be provided, and the two guide stoppers are arranged on the substrate.

Optionally, the transmission structure further 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 radial outer contour of the shaft matches, and the end of the guide shaft extends into the matching hole and can rotate in the matching hole. Torque is transmitted between the first transmission member and the second transmission member through the elastic member. Due to the characteristic that the elastic member can be deformed by force, the rotation centers of the first transmission member and the second transmission member may not be consistent during the torque transmission process. A certain offset occurs. Therefore, a guide shaft can be arranged 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. The other end 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 during the torque transmission The movement of the second transmission member avoids the inconsistency of the rotation centers of the first transmission member and the second transmission member, causing a certain offset problem, and makes the transmission more reliable. In addition, optionally, the axis of the guide shaft may coincide with the axis of the output shaft of the micro motor, which is convenient for torque transmission.

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

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

Optionally, the spring is formed by the spiral rotation of a metal wire, and the direction of the spiral rotation of the metal wire is the same as the rotation direction of the output shaft of the micro motor when outputting torque. In this way, when the output shaft outputs torque, the more the spring is tightened and the tighter it is, it is not easy to be damaged, and the torque transmission is used; when the spring is subjected to a reverse impact, the more the spring is twisted and the outward, the deformation space is large, and the impact absorption effect is good.

Optionally, the first end of the 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 end of the first transmission member corresponding to the spring wire is provided with a first clamping slot, and the spring The first end of the metal wire extends into the first slot; of course, if the line where the extension direction of the first 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 aligned with the first transmission member Only by fixing can the torque transmission efficiency be guaranteed. Therefore, it is also possible to set the straight line where the extension direction of the first end of the metal wire is located non-collinearly with the rotation axis of the output shaft of the micro motor, so that the first end of the metal wire only needs to extend into the first slot, without fixing The torque can be transmitted normally; of course, under the premise that the first end of the metal wire extends into the first slot, the first end of the metal wire can be further fixed (for example, welded) to the first slot to ensure Securely fixed.

The second end of the 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 end of the second transmission member corresponding to the second end of the wire of the spring is provided with a second clamping slot. The two ends extend into the second card slot. Similarly, if the 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 micromotor, the metal wire needs to be fixed with the output shaft of the micromotor to ensure torque transmission efficiency. Therefore, it is also possible to set the straight line where the extension direction of the second end of the metal wire is located non-collinearly with the rotation axis of the output shaft of the micromotor. In this way, the second end of the metal wire only needs to extend into the second slot without being fixed. Torque can be transmitted normally; of course, on the premise that the second end of the wire extends into the second slot, the second end of the wire can be further fixed (for example, welded) to the second slot to ensure the fixation reliable. That is, the two ends of the spring are respectively connected with the first transmission member and the second transmission member, which may be clamped and/or welded. Generally, the two ends of the spring can be flat and welded to the first transmission part and the second transmission part respectively, or the two ends of the spring respectively extend toward the first transmission part and the second transmission part, and can be clamped. Or welding. Among them, the reliability of the transmission torque of the flat end welding solution is only guaranteed by the reliability of the welding, and the two ends of the spring are extended to be clamped or welded, the two ends of the spring and the corresponding slot can be matched to provide the transmission torque As long as the structure is matched, the torque can be transmitted without relying on the reliability of welding.

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

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

Optionally, the elastic member includes a plurality of elastic pieces made of elastic material, and the plurality of elastic pieces are arranged at even intervals in the circumferential direction of the rotation axis of the output shaft of the micro motor. The elastic member may also be an elastic sheet, such as a plurality of elastic sheets or rods made of metal materials.

In the second aspect, the embodiments of the present application provide an electronic device, including a housing, and a camera assembly arranged in the housing. The housing is provided with a micro-motor assembly according to any one of the above technical solutions, and the micro-motor assembly is drivingly connected to the camera assembly. The camera assembly moves relative to the housing.

In the electronic device provided by the embodiments of the present application, the housing is provided with a micro-motor assembly as in any of the above technical solutions, and the micro-motor assembly is in transmission connection with the camera assembly, so that the camera assembly can be driven to move relative to the housing. Since the housing is provided with the micro-motor assembly of any of the above technical solutions, the recoil effect of the micro-motor can be effectively reduced, and the service life of the micro-motor can be improved.

Description of the drawings

FIG. 1 is a schematic structural diagram of a micro motor assembly provided by an embodiment of the application;

2 is a schematic diagram of an exploded structure of a micro-motor assembly provided by an embodiment of the application;

FIG. 3 is an exploded structure diagram of the transmission structure in the micro motor assembly provided by the embodiment of the application.

Reference signs:

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 231-coating hole; 232-second card slot; 24-guide shaft; 3-guide stopper; 4-base plate; 5-driven gear.

Detailed ways

1, 2 and 3, the embodiment of the present application provides a micro motor assembly, including a micro motor 1 and a transmission structure 2, the transmission structure 2 includes a deformable elastic member 21, the micro motor 1 and the component to be driven ( (Not shown in the figure), the torque is transmitted between the elastic members 21.

The micro motor assembly provided by 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 component to be driven to move, This ensures that the micromotor 1 can normally drive the components to be driven to perform corresponding actions (such as rotation and translation, etc.). When the movement of the components to be driven is blocked, the reverse impact to the micromotor 1 will be absorbed by the deformable elastic member 21, which can effectively reduce the recoil effect of the micromotor 1 and increase the service life of the micromotor 1.

The torque is transmitted between the micro motor 1 and the component to be driven through the elastic member 21, which can be directly connected to the output shaft 11 of the micro motor 1 through the elastic member 21 to transmit the torque, or it can be between the elastic member 21 and the output shaft of the micro motor 1 Other structures are added between 11 to indirectly transmit 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 elastic member 21 is directly connected to the output shaft 11, and the elastic member 21 needs to be greatly improved or installed. Operation is not easy. Therefore, an intermediate structure can be used to connect the two to facilitate installation. 2 and 3, the transmission structure 2 further includes a first transmission member 22, the first end of the first transmission member 22 is connected with the elastic member 21, the second end of the first transmission member 22 and the output of the micro motor 1 The shaft 11 is connected, and the micro-motor 1 and the elastic member 21 transmit torque 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 with the elastic member 21, and the second end of the first transmission member 22 is connected with the output shaft 11, so that the micromotor 1 and the elastic member 21 Torque is transmitted by the first transmission member 22, and the structure of the first transmission member 22 can be set according to the needs of connection with the output shaft 11 of the micro motor 1, without too much influence on the original output shaft 11 and the shape and structure of the elastic member 21. It can also facilitate installation and operation.

After the first transmission member 22 is provided, there are multiple connection methods, such as clamping or welding, on the premise that torque can be transmitted between the first transmission member 22 and the elastic member 21.

The connection between the first transmission member 22 and the output shaft 11 of the micro motor 1 may be a non-detachable connection or a detachable connection. In comparison, the detachable connection is convenient for installation and disassembly, and facilitates 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 micromotor 1, the first transmission member 22 and the output shaft 11 of the micromotor 1 are detachably connected.

There are many ways to connect the first transmission member 22 to the output shaft 11 of the micromotor 1. In some embodiments, as shown in FIGS. 1 and 2, the end of the output shaft 11 of the micromotor 1 is a flat head. In structure 111, 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 outline of the flat head structure 111, and the flat head structure 111 fits into the groove 221. By setting the end of the output shaft 11 of the micro-motor 1 as a flat head structure 111, and at the position corresponding to the flat head structure 111 on the first transmission member 22, a groove 221 matching the cross-sectional outline of the flat head structure 111 is provided , The flat head structure 111 fits into the groove 221 so that the first transmission member 22 and the output shaft 11 of the micro motor 1 can be detachably connected, and the torque can be transmitted smoothly.

In some embodiments, the detachable connection between the first transmission member 22 and the output shaft 11 of the micro motor 1 may also be a key or pin connection. Specifically, the first transmission member 22 has a sleeve structure, and thus a micro The output shaft 11 of the motor 1 extends into the sleeve structure, the output shaft 11 of the micro motor 1 and the sleeve structure are connected by a key, or the output shaft 11 of the micro motor 1 and the sleeve structure are connected by a pin, which can smoothly transmit torque.

Torque is transmitted between the micromotor 1 and the component to be driven through the elastic member 21, which can be directly connected to the component to be driven through the elastic member 21 to transmit the torque, or other structures are added between the elastic member 21 and the component to be driven to indirectly Transfer 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 components to be driven is often different from the motion state output by the micro motor 1, which requires corresponding transmission components to transform the motion mode. If the elastic member 21 is directly connected to the component to be driven, the movement state of the component to be driven cannot be changed, and it is not easy to connect the corresponding transmission component. Therefore, as shown in FIGS. 2 and 3, the transmission structure 2 further includes a second transmission member 23 , The first end of the second transmission member 23 is connected with the elastic member 21, the second end of the second transmission member 23 is connected with the component to be driven, and the second transmission member 23 transmits torque between the elastic member 21 and the component to be driven. A second transmission member 23 is provided, the first end of the second transmission member 23 is connected with the elastic member 21, the second end of the second transmission member 23 is connected with the component to be driven, and the second transmission member passes between the elastic member and the component to be driven 23 transfer torque. In this way, the second transmission member 23 can be set to any structure that can change the movement state of the component to be driven to realize the pre-movement state of the component to be driven, and the second transmission component 23 can facilitate the connection between the elastic member 21 and the component to be driven.

Similar to the connection mode of the first transmission member 22 and the elastic member 21, the second transmission member 23 and the elastic member 21 can be clamped or welded to ensure torque transmission.

In order to facilitate driving the components to be driven, the corresponding transmission component for changing the movement mode, speed or direction can be directly arranged on the second transmission member 23, or the transmission component (or part of it) can be directly used as the second transmission The pieces 23 are respectively connected with the elastic piece 21 and the component to be driven. For example, as shown in FIGS. 1 and 2, when the component to be driven is driven by a gear set, the second transmission member 23 may be a gear.

It should be noted that there are multiple implementation modes for the transmission components that change the movement mode, speed or direction, such as multiple gear meshing transmission, rack and pinion transmission, and belt transmission. Correspondingly, these can be provided on the second transmission member 23. The transmission component, or the second transmission component 23 is one of these transmission components.

When the second transmission member 23 is a gear, the common way of fixing the gear is to pass the shaft through the central connecting hole of the gear, and drive the gear to rotate through the rotation of the shaft. In this way, when the gear rotates, its axial direction is not positioned. , The gear is prone to displacement along its thickness direction, and may come off the shaft. Therefore, in some embodiments, a positioning structure for organizing the gear to move along the thickness direction is also provided at both ends of the gear in the thickness direction. For example, the shaft has a shoulder, and the shaft end can be provided with a circlip, or, as shown in Figures 1 and 2, it also includes two guide stoppers 3 fixedly arranged opposite to the micromotor 1, and the two guide stoppers 3 are arranged at intervals , The gear is arranged between the two guide stops 3, and the distance between the two guide stops 3 matches the thickness of the gear. This prevents the gear from moving in the axial direction when it rotates.

The two guide stoppers 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 setting of the two guide stoppers 3, as shown in Figures 1 and 2, they also include The micromotor 1 is relatively fixed to the base plate 4, and two guides 3 are arranged on the base plate 4. By providing the base plate 4, the two guide stoppers 3 are fixed on the base plate 4, or are integrally formed with the base plate 4, and then fixed to other positions by the base plate 4, so that the two guide stoppers 3 and the micromotor 1 can be relatively fixed.

As shown in Figures 2 and 3, in some embodiments, the transmission structure 2 further 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 micromotor 1 to guide The 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. The matching hole 231 matches the radial outer contour of the guide shaft 24, and the guide shaft The end of 24 extends into the fitting hole 231 and can rotate in the fitting hole 231. Torque is transmitted between the first transmission member 22 and the second transmission member 23 through the elastic member 21. Due to the characteristic that the elastic member 21 can be deformed by force, the first transmission member 22 and the second transmission member may be in the process of transmitting torque. The rotation center of 23 is inconsistent and a certain deviation occurs. Therefore, a guide shaft 24 can be provided between the first transmission member 22 and the second transmission member 23, and one end of the guide shaft 24 is fixed on the first transmission member 22 and guides The axis of the shaft 24 coincides with the axis of the output shaft 11 of the micromotor 1, and the other end of the guide shaft 24 extends into the matching hole 231 of the second transmission member 23, because the matching hole 231 matches the radial outer contour of the guide shaft 24 , And the guide shaft 24 can rotate in the mating hole 231, and in the process of torque transmission, the guide shaft 24 can guide the movement of the second transmission member 23 to avoid the inconsistent rotation center of the first transmission member 22 and the second transmission member 23 , A certain offset problem occurs, which makes the transmission more reliable.

The elastic member 21 can be implemented in multiple ways, such as springs, elastic pieces, and elastic posts. The material can be composed of elastic metal materials or rubber materials.

In some embodiments, the elastic member 21 is a spring, and the center axis of the spring is coaxially arranged with the rotation axis of the output shaft 11 of the micromotor 1.

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.

The spring can be any one of a coil spring, a torsion bar spring, a gas spring, and a rubber spring.

As shown in Figure 1, Figure 2 and Figure 3, the spring is formed by the spiral rotation of the metal wire. In this way, the spiral rotation of the metal wire of the spring has a certain direction. In the process of transmitting torque, according to the torque or impact of the spring The direction of the spring is different, the deformation of the spring is different. Optionally, as shown in FIG. 1, FIG. 2 and FIG. 3, the direction of the spiral rotation of the wire of the spring is consistent with the rotation direction of the output shaft 11 of the micromotor 1 when torque is output. In this way, when the output shaft 11 outputs torque, the more the spring is tightened and the tighter it is, it is not easy to be damaged, and the torque transmission is utilized; when the spring is subjected to a reverse impact, the spring is twisted outwards, the deformation space is large, and the impact absorption effect is good.

The two ends of the spring are respectively connected with the first transmission member 22 and the second transmission member 23, which can be clamped or welded. Generally, the two ends of the spring can be flat and welded and fixed to the first transmission member 22 and the second transmission member 23 respectively, or the two ends of the spring respectively extend toward the first transmission member 22 and the second transmission member 23 , Can be snapped or welded. Among them, the reliability of the transmission torque of the flat end welding solution is only guaranteed by the reliability of the welding, and the two ends of the spring are extended to be clamped or welded, the two ends of the spring and the corresponding slot can be matched to provide the transmission torque As long as the structure is matched, the torque can be transmitted without relying on the reliability of welding. Therefore, as shown in FIGS. 2 and 3, the first end of the wire of the spring extends along the axial direction of the output shaft 11 of the micromotor 1 toward the first transmission member 22, and the extension direction of the first end of the wire is on the straight line It is arranged non-collinearly 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 wire of the spring, and the first end of the wire of the spring extends into the first end of the wire. In the slot 222; the second end of the wire of the spring extends toward the second transmission member 23 along the axial direction of the output shaft 11 of the micromotor 1, and the extension direction of the second end of the wire is in line with the output shaft of the micromotor 1 The rotation axes of 11 are arranged non-collinearly. The second transmission member 23 is provided with a second slot 232 corresponding to the second end of the wire of the spring, and the second end of the wire of the spring extends into the second slot 232. In this way, as long as the first end of the metal wire correspondingly extends into the first slot 222 and the second end of the metal wire correspondingly extends into the second slot 232, the torque can be transmitted without relying on the reliability of welding. In addition, since the first transmission member 22 and the second transmission member 23 both rely on rotation to transmit torque, if the first end of the wire is arranged collinearly with the rotation axis of the output shaft 11 of the micromotor 1, the rotation axis is basically If the rotation displacement in the circumferential direction does not occur, the rotation torque of the first transmission member 22 may not be correctly transmitted to the spring; similarly, if the second end of the spring and the rotation axis of the output shaft 11 of the micromotor 1 are arranged collinearly, it may As a result, the rotational torque of the spring cannot be correctly transmitted to the second transmission member 23, so that the second transmission member 23 cannot rotate or rotate eccentrically. Therefore, the straight line in which the first end of the metal wire and the extension direction of the second end of the metal wire are both set non-collinearly with the rotation axis of the output shaft 11 of the micromotor 1 to ensure that the spring can rotate correctly to transmit torque.

The straight line in the extending direction of the first end of the metal wire and the extending direction in the extending direction of the second end of the metal wire may be collinear or non-collinear. The collinear setting is convenient for production and installation. And the force point and output force point of the spring are on the same straight line, which is conducive to the transmission of torque. Therefore, as shown in Figures 2 and 3, the extension of the first end of the wire and the extension of the second end The straight line of the direction is collinear.

In some embodiments, the elastic member 21 is an elastic tube shaft made of elastic material, and the center axis of the elastic tube shaft is coaxially arranged with the rotation axis of the output shaft 11 of the micromotor 1. The elastic member 21 may be a tube shaft with elasticity, such as a transmission shaft made of rubber material.

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

In some embodiments, the elastic member 21 includes a plurality of elastic pieces made of elastic material, and the plurality of elastic pieces are evenly spaced in the circumferential direction of the rotation axis of the output shaft 11 of the micromotor 1. The elastic member 21 may also be an elastic sheet, such as a plurality of elastic sheets or rods made of metal material.

In addition, an embodiment of the present application provides an electronic device, including a housing, and a camera assembly arranged in the housing. The housing is provided with a micro-motor assembly according to any of the above technical solutions, and the micro-motor assembly is connected to the camera assembly in transmission to drive the camera. The component moves relative to the housing.

It should be noted that an embodiment of the present application provides an electronic device, in which the micro motor assembly of any one of the above technical solutions is provided in the housing. The camera assembly may be the aforementioned component to be driven. The micro motor 1 of the micro motor assembly is connected to each other through the transmission structure 2 Drive the camera assembly to connect to drive the camera assembly to move. Specifically, electronic devices can be mobile phones, tablets, laptops, e-readers, etc. The scheme of micro-motor components driving camera components movement is common in mobile phones. Some mobile phones ensure that the front full screen has a high screen-to-body ratio and improve aesthetics. , Choose to cancel the front camera from the front, set the camera assembly in the phone shell, when needed, extend the camera assembly from the side of the phone through the micro motor assembly, and retract the camera assembly into the phone shell when the camera is not used. . 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 electronic equipment. When needed, the micro-motor assembly can be used in any system that needs to provide power, for example, to drive the housing to flip , Or drive the heat exchange fan in the device to rotate, etc. In an embodiment, the housing and the heat exchange fan may be components to be driven. Specifically, the micromotor 1 is connected to the housing to be turned over through the transmission structure 2 to drive the housing to reverse, or the micromotor 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 the normal driving demand, the recoil effect of the micro motor can be effectively reduced, and the service life of the micro motor can be improved.

In the description of this specification, specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the application, not to limit them; although the application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions recorded in the foregoing embodiments are modified, or some of the technical features are equivalently replaced; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

A micro-motor assembly is characterized by comprising a micro-motor and a transmission structure. The transmission structure includes a deformable elastic member. The micro-motor transmits torque through the elastic member to drive a component to be driven to move.
The micro-motor assembly according to claim 1, wherein the transmission structure further comprises a first transmission member, a first end of the first transmission member is connected to the elastic member, and the first transmission member The second end is connected with the output shaft of the micro motor, and the first transmission member transmits torque between the micro motor and the elastic member.
The micro motor assembly according to claim 2, wherein the first transmission member is connected to the elastic member in a snap connection or the first transmission member is connected to the elastic member by welding.
The micro motor assembly according to claim 2 or 3, wherein the first transmission member is detachably connected to the output shaft of the micro motor.
The micro-motor assembly according to any one of claims 2 to 4, wherein the end of the output shaft of the micro-motor has a flat-head structure, and the first transmission member is provided with a corresponding flat-head structure. A groove, 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.
The micro motor assembly according to any one of claims 2 to 4, wherein the first transmission member is a sleeve structure, the output shaft of the micro motor extends into the sleeve structure, and the The output shaft of the micro motor and the sleeve structure are connected by a key, or the output shaft of the micro motor and the sleeve structure are connected by a pin.
The micro motor assembly according to any one of claims 2 to 6, wherein the transmission structure further comprises a second transmission member, the first end of the second transmission member is connected to the elastic member, and The second end of the second transmission member is connected with the component to be driven, and torque is transmitted between the elastic member and the component to be driven through the second transmission member.
8. The micro motor assembly according to claim 7, wherein the second transmission member is connected to the elastic member in a snap connection or the second transmission member is connected to the elastic member by welding.
The micro-motor assembly of claim 7 or 8, wherein the second transmission member is a gear.
The micro-motor assembly according to claim 9, further comprising two guide stoppers fixedly arranged opposite to the micro-motor, the two guide stoppers are arranged at intervals, and the gears are arranged in two Between the guide stoppers, the distance between the two guide stoppers matches the thickness of the gear.
The micro motor assembly according to any one of claims 7 to 10, wherein the transmission structure further comprises a guide shaft fixed to the first transmission member, and the guide shaft is located in the first transmission member To the side of 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 The part extends into the matching hole.
The micro motor assembly according to any one of claims 7 to 11, wherein the elastic member is a spring.
The micro-motor assembly according to claim 12, wherein the spring is formed by the 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.
The micro-motor assembly according to claim 12 or 13, wherein the first end of the 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 A transmission member corresponding to the first end of the wire of the spring is provided with a first slot, and the first end of the wire of the spring extends into the first slot;

The second end of the wire of the spring extends toward the second transmission member along the axial direction of the output shaft of the micromotor, and the second transmission member corresponds to the second end of the spring wire. Two clamping grooves, the second end of the wire of the spring extends into the second clamping groove.
The micro-motor assembly according to claim 14, wherein the straight line where the extension direction of the first end of the metal wire is located is collinear with the line where the extension direction of the second end of the metal wire is located.
The micro-motor assembly according to any one of claims 1 to 11, wherein the elastic member is an elastic tube shaft made of an elastic material.
The micro motor assembly according to any one of claims 1 to 11, wherein the elastic member comprises a plurality of elastic pieces made of elastic material, and the plurality of elastic pieces rotate on the output shaft of the micro motor The axis is arranged at even intervals in the circumferential direction.
An electronic device, comprising a housing, and a camera assembly arranged in the housing, wherein the housing is provided with the micro-motor assembly according to any one of claims 1 to 17, the micro-motor The component is in transmission connection with the camera assembly to drive the camera assembly to move relative to the housing.