Electric connection structure of motor and actuator

Abstract

The utility model relates to the technical field of automobile electronic equipment, and discloses an electric connection structure of a motor and an actuator. The electric connection structure of the motor comprises the motor and a circuit board. The motor comprises a shell, a stator arranged in the shell, a rotor rotationally connected with the shell and a base which is connected with the stator and penetrates out of the shell, the stator comprises a winding body connected with the shell and a coil wound on the winding body, the base is provided with a contact pin, and the end of the coil penetrates out of the shell and is wound on the contact pin. The circuit board is provided with a through hole, and the pin passes through the through hole and is welded on the circuit board together with the end part of the coil. According to the electric connection structure of the motor and the actuator provided by the invention, the reliability of the electric connection structure of the motor can be ensured.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to the technical field of automobile electronic equipment, in particular to an electric connection structure of a motor and an actuator. BACKGROUND

[0002] With the continuous development of automatic control technology, actuators are also applied to more and more various products. The actuator is an important part of the control system, which can receive a control signal and realize corresponding action output. The actuator can convert electrical energy into mechanical energy through a motor to drive an execution component to realize corresponding execution action.

[0003] The motor as a component for generating power output in the actuator affects the working performance of the actuator. Stable operation of the motor is a guarantee for ensuring that the actuator can realize corresponding control action. The electric connection structure of the motor controls the normal operation of the motor. Therefore, how to ensure the reliability of the electric connection structure of the motor is an important problem. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the embodiment of the present application is to provide an electric connection structure of a motor and an actuator, which can be beneficial to ensure the reliability of the electric connection structure of the motor.

[0005] To solve the above technical problem, the embodiment of the present application provides an electric connection structure of a motor. The electric connection structure of the motor comprises a motor and a circuit board. The motor comprises a shell, a stator arranged in the shell, a rotor rotationally connected with the shell, and a base connected with the stator and penetrating out of the shell, the stator comprises a winding body connected with the shell and a coil wound on the winding body, the base is provided with a pin, and the end portion of the coil penetrates out of the shell and is wound on the pin. The circuit board is provided with a through hole, and the pin penetrates through the through hole and is welded with the end portion of the coil on the circuit board.

[0006] The embodiment of the present application also provides an actuator, which comprises the above-mentioned electric connection structure of the motor.

[0007] The electric connection structure of the motor and the actuator provided by the embodiment of the present application are provided with a direct connection structure between the coil of the stator and the circuit board. The end portion of the coil is kept outside the shell and is wound on the pin of the base, and the pin can be directly welded on the circuit board. Thus, the coil and the circuit board are directly connected, and the electrical signal of the circuit board can be directly transmitted to the coil of the stator without the aid of a flying wire or a wire harness for signal transmission. The electric connection structure between the motor and the circuit board can be simplified, the connection stiffness is improved, and thus the reliability of the electric connection structure of the motor is ensured.

[0008] In some embodiments, the end portion of the coil is spirally wound on the pin. In this way, the consistency of the winding direction can be ensured by adopting a regular spiral winding form, and the wiring neatness is maintained.

[0009] In some embodiments, the end portion of the coil is wound around the portion of the pin penetrating through the circuit board. In this way, the electrical connection between the coil and the circuit board can be ensured by winding the coil around the portion of the pin penetrating through the circuit board.

[0010] In some embodiments, the base is provided with a recess, and the portion of the coil is embedded in the recess. In this way, the coil winding arrangement can be facilitated by the recess, and the position of the coil winding can be limited.

[0011] In some embodiments, the base is provided with a plurality of protrusions, the protrusions are arranged at intervals with the pin, and each protrusion abuts on the surface of the circuit board. In this way, the interference between the base and the circuit board can be avoided by arranging the protrusions to abut on the surface of the circuit board.

[0012] In some embodiments, the plurality of protrusions are arranged around the pin. In this way, the stability of the base and the circuit board can be ensured by arranging the protrusions around the pin.

[0013] In some embodiments, the base is integrally formed with the winding body. In this way, the manufacturing of the base can be simplified, and the overall structural strength of the base and the winding body can be ensured.

[0014] In some embodiments, the base is provided with a plurality of bases, and each base is provided with a pin corresponding to the end portion of the same coil. In this way, the accuracy of the wiring connection can be ensured by maintaining the correspondence between the base and the coil.

[0015] In some embodiments, the plurality of bases are arranged adjacent to each other, and the pins on the plurality of bases are arranged close to each other. In this way, the pins can be conveniently welded on the circuit board by being arranged in a concentrated manner. BRIEF DESCRIPTION OF DRAWINGS

[0016] One or more embodiments are illustrated by way of example in the figures that form a part of this patent document, these example are not intended to limit the embodiments, elements having the same reference numbers in the figures indicate like elements, unless otherwise expressly stated, the figures in the drawings do not constitute a proportional limitation.

[0017] Figure 1 is a perspective structural schematic diagram of an electrical connection structure of an electric machine provided by some embodiments of the present application;

[0018] Figure 2 is a side structural schematic diagram of an electrical connection structure of an electric machine provided by some embodiments of the present application;

[0019] Figure 3 is a perspective structural schematic diagram of an electrical connection structure of an electric machine after removing the shell provided by some embodiments of the present application;

[0020] Figure 4 Figure 1 is a structural schematic diagram of a motor without a shell provided by some embodiments of the present application. DETAILED DESCRIPTION

[0021] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described in detail below with reference to the drawings. However, those skilled in the art can understand that, in the embodiments of the present application, many technical details are presented in order to make the readers better understand the present application. However, the technical solutions claimed by the present application can be implemented even without these technical details and various changes and modifications based on the following embodiments. The division of the following embodiments is for the convenience of description, and should not constitute any limitation on the specific embodiments of the present application, and the embodiments can be combined and referenced with each other without contradiction.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application; the terms "include" and "have" and any variations thereof used in the specification and claims of this application and the above description of the drawings are intended to cover the non-exclusive inclusion.

[0023] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection" and the like should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0024] The action control of mechatronic products cannot be separated from actuators, and the actuators are important components of product control systems. In particular, complex products such as automobiles integrate many parts, and in many control scenarios, actuators are used to achieve corresponding action control. For example, the damper actuator of the automobile air conditioning system, the light adjustment actuator of the automobile light system, or the lifting actuator of the automobile window system. The actuator uses a motor to generate output power, and the motor can convert electrical energy into mechanical energy during operation, and then drive the execution component to achieve the corresponding action.

[0025] The proper operation of the motor affects the performance of the actuator, and proper motor operation requires reliable electrical connections. However, some actuators use flexible flat cables or flying leads to connect the motor to the circuit board, which can be unreliable and negatively impact the actuator's operational stability. Furthermore, this can be costly.

[0026] To improve the reliability of a motor's electrical connection structure, some embodiments of the present application provide a motor electrical connection structure. By employing direct pin connections between the motor and the circuit board, not only can the electrical connection structure be simplified and costs reduced, but the soldering between the pins and the circuit board can also increase connection rigidity and improve reliability.

[0027] The following combination Figures 1 to 4 The electrical connection structure of the motor provided in some embodiments of the present application is described.

[0028] like Figures 1 to 4 As shown, the electrical connection structure of the motor 11 provided in some embodiments of the present application includes the motor 11 and a circuit board 12. The motor 11 includes a housing 111, a stator 112 disposed within the housing 111, a rotor 113 rotatably connected to the housing 111, and a base 114 connected to the stator 112 and extending through the housing 111. The stator 112 includes a winding body 1121 connected to the housing 111 and a coil 1122 wound around the winding body 1121. The base 114 is provided with a pin 115, and the end of the coil 1122 extends from the housing 111 and is wound around the pin 115. The circuit board 12 is provided with a through hole, and the pin 115 passes through the through hole and is soldered to the end of the coil 1122 on the circuit board 12.

[0029] The housing 111 is the encapsulated portion of the motor 11, which can provide a mounting base for other parts of the motor 11 and protect the other parts. The stator 112 is connected to the housing 111 and is used to provide a changing magnetic field, which can cause the rotor 113 to rotate relative to the housing 111, thereby generating power to drive other components to move. The base 114 is a component on which the pins 115 are set, and the base 114 is penetrated on the side wall of the housing 111. The coil 1122 of the stator 112 can form a magnetic field during the power-on process, thereby interacting with the magnetic parts such as the magnet of the rotor 113, causing the output shaft of the rotor 113 to rotate. The motor 11 can be a stepper motor 11, in which the winding body 1121 of the stator 112 in the stepper motor 11 is axially arranged, and the rotor 113 is a cylindrical magnet with the output shaft installed in the center. In actual situations, the base 114 and the winding body 1121 can be integrally formed, that is, the base 114 and the winding body 1121 adopt an integrally formed structure, for example, they can be integrally formed by injection molding.

[0030] The coil 1122 in the stator 112 receives an electrical signal to generate a magnetic field to drive the rotor 113 to move. The main part of the coil 1122 is wound on the bobbin 1121. The bobbin 1121 can be a hollow cylinder, and a protrusion is arranged at the end to limit the winding position of the coil 1122. The two ends of the coil 1122 are reserved a certain length, which are kept outside the shell 111 and wound on the pin 115, and can be stably fixed on the pin 115 to be electrically connected with the circuit board 12 to receive the electrical signal of the circuit board 12.

[0031] The circuit board 12 is a part that outputs a control signal to the motor 11. The pin 115 of the motor 11 passes through the through hole on the circuit board 12 and is welded on the circuit board 12 at the end of the coil 1122. Thus, a direct connection structure is formed between the motor 11 and the circuit board 12, avoiding the problem of poor reliability caused by the use of a flying wire or a flexible flat cable.

[0032] The electrical connection structure of the motor 11 provided by some embodiments of the present application provides a direct connection structure between the coil 1122 of the stator 112 and the circuit board 12. The end of the coil 1122 is kept outside the shell 111 and wound on the pin 115 of the base 114, and the pin 115 can be directly welded on the circuit board 12. Thus, a direct connection is formed between the coil 1122 and the circuit board 12, and the electrical signal of the circuit board 12 can be directly transmitted to the coil 1122 of the stator 112 without the aid of a flying wire or a flexible flat cable for signal transmission. The electrical connection structure between the motor 11 and the circuit board 12 can be simplified, the connection stiffness can be improved, and thus the reliability of the electrical connection structure of the motor 11 can be ensured.

[0033] In some embodiments, the end of the coil 1122 can be spirally wound on the pin 115.

[0034] The end of the coil 1122 has a certain length, and the winding form of the end of the coil 1122 on the pin 115 can be regular spiral. That is, the end of the coil 1122 forms a multi-turn winding form on the pin 115, and the end of the coil 1122 can be one turn after another or keep a certain gap between each other when wound on the pin 115. By spirally winding the end of the coil 1122 on the pin 115, the order of the end of the coil 1122 wound on the pin 115 can be ensured, and the whole formed by the end of the coil 1122 and the pin 115 can be conveniently welded through the circuit board 12. In actual situations, the end of the coil 1122 can also be fixed on the pin 115 in a random winding form, as long as a stable electrical connection with the circuit board 12 can be ensured.

[0035] In addition, the end of the coil 1122 can be wound around the pin 115 passing through the circuit board 12.

[0036] That is, the end of the coil 1122 is wound around the entire pin 115, and the end of the coil 1122 can also be wound multiple times at the portion of the pin 115 that passes through the circuit board 12. For example, the end of the coil 1122 can be wound two, three, or four times at the portion of the pin 115 that passes through the circuit board 12. In this way, the electrical connection between the end of the coil 1122 and the circuit board 12 can be ensured when the pin 115 is welded to the circuit board 12, and the reliability can be improved.

[0037] In some embodiments, the base 114 can be provided with a groove 1141, and a portion of the wire of the coil 1122 is embedded in the groove 1141.

[0038] The groove 1141 can be provided on the side or bottom surface of the base 114 that is exposed outside the shell 111, and the groove 1141 can guide the end of the coil 1122. When the end of the coil 1122 is wound around the pin 115, a portion of the wire of the coil 1122 can enter the groove 1141 and be arranged. In this way, the wire that passes through the shell 111 can be prevented from being easily displaced, and the stability of the wire during arrangement can be ensured. Figure 4 As shown in FIG. 7, the groove 1141 extends transversely and longitudinally on the side of the base 114, and the wire of the coil 1122 can be embedded in the groove 1141 and extend to the position of the pin 115. The position of the wire can be effectively limited by the side wall of the groove 1141, so that the wire can be prevented from being easily loose.

[0039] In addition, the base 114 can be provided with a plurality of protrusions 1142, and the protrusions 1142 are arranged at intervals with the pin 115, and each protrusion 1142 abuts against the surface of the circuit board 12.

[0040] The protrusion 1142 protrudes from the bottom surface of the base 114 that is close to the circuit board 12, and the protrusion 1142 can separate a certain space between the surface of the base 114 and the surface of the circuit board 12, so that interference between the base 114 and the circuit board 12 can be avoided. In addition, the relative position between the motor 11 and the circuit board 12 can be conveniently positioned. The number of protrusions 1142 can be two, three, or four, and the positions of the protrusions 1142 can be arranged at positions of the base 114 corresponding to the non-wiring area of the circuit board 12.

[0041] In some embodiments, the plurality of protrusions 1142 can be arranged around the pin 115.

[0042] As shown in FIG. 8, the plurality of protrusions 1142 are arranged around the pin 115, and the protrusions 1142 are arranged at intervals with the pin 115. Figure 3 and Figure 4As shown, the protrusions 1142 can be arranged at the edge of the base 114, and the plurality of pins 115 corresponding to the plurality of coils 1122 can be arranged on the base 114 in a concentrated manner, facilitating the connection between the pins 115 and the circuit board 12. By arranging the plurality of protrusions 1142 around the pins 115, the stability between the base 114 and the circuit board 12 can be ensured, and the position matching relationship between the motor 11 and the circuit board 12 can be effectively limited.

[0043] In some embodiments, the circuit board 12 is parallel to the rotation axis of the rotor 113.

[0044] As shown in Figure 1 and Figure 2 , the base 114 is arranged at the side wall of the housing 111 in the circumferential direction of the axis, and the circuit board 12 is parallel to the rotation axis of the rotor 113, i.e., the axis direction of the motor 11. In this way, the lateral space of the motor 11 can be fully utilized, and when the motor 11 and the circuit board 12 are arranged in the actuator, the space can be saved, which is beneficial to reduce the volume of the actuator.

[0045] In some embodiments, there are a plurality of bases 114, and each base 114 is provided with a pin 115 corresponding to an end of the same coil 1122.

[0046] The number of bases 114 corresponds to the number of coils 1122, and each base 114 can be arranged adjacent to the corresponding coil 1122. The base 114 can be fixedly connected with the protrusion on the winding body 1121. The pin 115 arranged on each base 114 corresponds to the same coil 1122, i.e., the two ends of the same coil 1122 can be wound on the pin 115 arranged on the same base 114. In this way, the length of the coil 1122 winding can be reduced, and the winding disorder can be avoided.

[0047] In addition, the plurality of bases 114 can be arranged adjacent to each other, and the pins 115 on the plurality of bases 114 can be arranged close to each other.

[0048] That is, the pins 115 on different bases 114 can be arranged at a relatively concentrated position, which is beneficial to the welding of the pins 115 on the circuit board 12. As shown in Figure 4 , the four pins 115 corresponding to the two coils 1122 are close to each other, forming a relatively regular quadrilateral structure.

[0049] Some embodiments of the present application also provide an actuator comprising the electrical connection structure of the motor 11 described above.

[0050] The actuator generates power output through the motor 11, and finally drives the execution component to realize the corresponding execution action. By adopting the electric connection structure of the direct connection form of the pin 115 and the circuit board 12, the structure can be simplified, and the connection strength can be improved, thereby improving the reliability of the electric connection structure of the motor 11, and ensuring the normal work of the actuator.

[0051] The actuator can be an actuator applied in various different control scenes of products, for example, a damper actuator for controlling air conditioning in a car. The power generated by the motor 11 can be transmitted through a transmission mechanism to output appropriate motion forms outwardly, so as to control the execution component to realize the corresponding action.

[0052] Those skilled in the art can understand that the above-mentioned embodiments are specific examples for realizing the present application, and in actual application, various changes can be made in form and details without departing from the spirit and scope of the present application.

Claims

1. An electrical connection structure of a motor, characterized in that: The motor comprises a housing, a stator arranged in the housing, a rotor rotatably connected to the housing, and a base connected to the stator and extending out of the housing, the stator comprising a winding body connected to the housing and a coil wound on the winding body, the base being provided with a pin, and the end of the coil extending out of the housing and being wound on the pin. The circuit board is provided with a through hole, and the pin extends through the through hole and is welded to the end of the coil on the circuit board.

2. The motor electrical connection structure according to claim 1, wherein the end of the coil is spirally wound on the pin.

3. The motor electrical connection structure according to claim 1, wherein the end of the coil is wound on the pin in multiple turns.

4. The motor electrical connection structure according to claim 1, wherein the base is provided with a groove, and part of the coil is embedded in the groove.

5. The motor electrical connection structure according to claim 1, wherein the base is provided with multiple protrusions, the protrusions are arranged at intervals with the pin, and each of the protrusions abuts against the surface of the circuit board.

6. The motor electrical connection structure according to claim 5, wherein multiple protrusions are arranged around the pin.

7. The motor electrical connection structure according to claim 1, wherein the base is integrally formed with the winding body.

8. The motor electrical connection structure according to claim 1, wherein the base is provided in multiple, and each of the bases is provided with the pin corresponding to the end of the same coil.

9. The motor electrical connection structure according to claim 8, wherein multiple bases are adjacently arranged, and the pins on multiple bases are arranged close to each other. The motor comprises the electrical connection structure according to any one of claims 1 to 9. ​ ​ ​ ​ ​ ​ ​ ​ 10. An actuator, characterized by ​

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