CN111884421A

CN111884421A - Wiring structure integrated in parking motor and wiring assembly method thereof

Info

Publication number: CN111884421A
Application number: CN202010832979.4A
Authority: CN
Inventors: 潘磊; 刘小兵; 李宇; 郑坚鹏; 孙国田; 李松; 胡小辉
Original assignee: Shenzhen Southern Dare Automotive Electronic Co Ltd
Current assignee: Shenzhen Southern Dare Automotive Electronic Co Ltd
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2020-11-03

Abstract

The invention discloses a wiring structure integrated in a parking motor, which comprises: the motor, the reducer and the sensor assembly; the worm of the motor is connected with the turbine of the speed reducer, and the sensor assembly is connected with the speed reducer; the motor is also internally provided with a control circuit board, the sensor component is also internally provided with a shaft head PCB, and the control circuit board is electrically connected with the shaft head PCB through a wire harness. Compared with the prior art, the wiring structure integrated in the parking motor and the wiring assembly method thereof have the advantages that the wiring harness penetrates through the motor, the speed reducer and the sensor assembly, the wiring harness body and the end part of the wiring harness are pressed and fixed or limited through the pressing block and the limiting protrusion, in order to save wiring space, the first end of the wiring harness is designed into double-row wire heads, the other end of the wiring harness is a single-piece cable, so that the limited space inside the motor and the sensor assembly is adapted, the application scene of large vibration is finally realized, and the reliability of electric connection of the wiring harness is ensured.

Description

Wiring structure integrated in parking motor and wiring assembly method thereof

Technical Field

The invention relates to the technical field of parking motors, in particular to a wiring structure integrated in a parking motor and a wiring assembly method thereof.

Background

Most PCBs in the market today are integrated in one mechanism, or two mechanisms but with the PCBs parallel to each other and connected by FFC (flexible flat cable) or pin grid. When the FFC is used for connection, the distance between the two PCB boards is required to be small or the vibration condition is not strict; this approach is not suitable for high intensity vibrations due to the material limitations of the FFC. Connecting two mechanisms with FFCs in different directions may require a large assembly space, which may be difficult to meet practical assembly requirements. In addition, the strength of the FFC connection is also insufficient and the pads are at risk of failure during vibration. If the pin header connection is applied to two PCBs in parallel, there will be stress during vibration due to assembly tolerances and vibration failure if in different directions. The PCB connecting mode is difficult to connect the PCBs in different directions in different mechanisms.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a wiring structure integrated in a parking motor and a wiring assembly method thereof, which are used for solving the problem of reliable electric connection between circuit boards which are distributed in two mechanisms and are not in parallel in the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme:

a wire routing structure integrated in a parking motor, comprising: the motor, the reducer and the sensor assembly; the worm of the motor is connected with the turbine of the speed reducer, and the sensor assembly is connected with the speed reducer; the electric motor is characterized in that a control circuit board is further arranged in the electric motor, a spindle nose PCB is further arranged in the sensor assembly, the control circuit board is electrically connected with the spindle nose PCB through a wire harness, the wire harness is provided with a wire harness body, a first end and a second end, the first end is electrically connected with the control circuit board, the second end is electrically connected with the spindle nose PCB, and the wire harness body penetrates through the speed reducer.

Wherein the sensor assembly comprises: the lower cover and the upper cover jointly enclose a cavity, and the spindle head PCB is arranged in the cavity; the lower cover is provided with a wire passing hole for the wiring harness to penetrate through, and the wire passing hole extends and is distributed along the bottom surface of the lower cover to form a strip-shaped hole.

The wire passing hole is further provided with a plurality of raised limiting bulges, and the limiting bulges are used for fixing the wire harness body.

The spindle nose PCB is further connected with a pressing block, and when the second end of the wire harness is connected to the spindle nose PCB, the pressing block presses the wire harness body.

Wherein, the motor includes: the worm gear comprises a motor shell, a stator arranged in the motor shell, a rotor penetrating through the stator and a worm connected to the rotor; the motor housing includes a housing body having an open end and a closed end, the control circuit board being connected to the open end.

Wherein, the reduction gear includes: the worm wheel is connected with the worm, and the spindle head magnet is arranged in the speed reducer shell; the reducer shell comprises a shell body and a connecting cover extending out of the shell body, and the connecting cover is connected to the opening end.

The first end of the wire harness is of a double-row wire head structure, and the first end is connected with the control circuit board in a welding mode.

The second end of the wire harness is of a single-row wire head structure, and the second end is connected with the shaft head PCB in a welding mode.

A method for assembling a wire harness integrated in a parking motor, the method being used for assembling the wire harness structure integrated in the parking motor, comprising the following steps:

soldering a first end of the wire harness to the control circuit board;

connecting a motor to a speed reducer, and enabling a second end of a wire harness to penetrate through a speed reducer shell of the speed reducer;

the second end of the wire harness penetrates through a wire passing hole in a lower cover of the sensor assembly, so that the wire harness body is limited in the limiting bulge, and the lower cover is locked on the speed reducer;

welding a second end of the wire harness to a welding spot on the shaft head PCB, and locking the shaft head PCB to the lower cover;

and locking the upper cover of the sensor assembly on the lower cover.

Wherein, the step of locking the upper cover of the sensor assembly on the lower cover further comprises: and dispensing on the lower cover or the upper cover so that the upper cover and the lower cover are connected in a sealing manner.

Compared with the prior art, the wiring structure integrated in the parking motor and the wiring assembly method thereof have the advantages that the wiring harness penetrates through the motor, the speed reducer and the sensor assembly, the wiring harness body and the end part of the wiring harness are pressed and fixed or limited through the pressing block and the limiting protrusion, in order to save wiring space, the first end of the wiring harness is designed into double-row wire heads, the other end of the wiring harness is a single-piece cable, so that the limited space inside the motor and the sensor assembly is adapted, the application scene of large vibration is finally realized, and the reliability of electric connection of the wiring harness is ensured.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more apparent, the following detailed description will be given of preferred embodiments.

Drawings

Fig. 1 is a schematic view of an overall structure of a wiring structure integrated in a parking motor according to the present invention.

Fig. 2 is a cross-sectional view of a wiring structure integrated in a parking motor according to the present invention.

Fig. 3 is a schematic structural diagram of a lower cover portion of the wiring structure integrated in the parking motor according to the present invention.

Fig. 4 is another angle structure diagram of the lower cover portion of the wiring structure integrated in the parking motor according to the present invention.

Fig. 5 is a schematic diagram of a wiring harness portion of the wiring structure integrated in the parking motor according to the present invention.

Fig. 6 to 12 are process schematic views illustrating a wiring assembly method of a wiring structure integrated in a parking motor according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be connected or detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above should not be understood to necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by one skilled in the art.

Referring to fig. 1 to 5, the present embodiment provides a wiring structure integrated in a parking motor, including: motor 1, reduction gear 2 and sensor assembly 3. The worm of the motor 1 is connected to the worm wheel of the speed reducer 2 to form a worm wheel and worm linkage mechanism, and the sensor assembly 3 is connected to the speed reducer 2. The motor 1 controls the speed reducer 2, and then the speed reducer 2 controls a gear of a gearbox of the automobile, so that electronic parking braking is realized.

The electric motor is characterized in that a control circuit board 4 is further arranged in the motor 1, a spindle nose PCB 6 is further arranged in the sensor assembly 3, the control circuit board 4 is electrically connected with the spindle nose PCB 6 through a wire harness 5, the wire harness 5 is provided with a wire harness body 51, a first end 52 and a second end 53, the first end 52 is electrically connected with the control circuit board 4, the second end 53 is electrically connected with the spindle nose PCB 6, and the wire harness body 51 penetrates through the speed reducer 2.

Referring again to fig. 2 to 4, the sensor assembly 3 includes: the lower cover 7, the upper cover 9 and the spindle nose PCB 6, the lower cover 7 and the upper cover 9 enclose a cavity, and the spindle nose PCB 6 is arranged in the cavity. The lower cover 7 is provided with a wire passing hole 71 for the wire harness 5 to pass through, the wire passing hole 71 extends along the bottom surface of the lower cover 7 to form a strip-shaped hole, the main body of the lower cover 7 is a circular bottom plate, and a plurality of connecting lugs 73 extend outwards from the periphery of the circular bottom plate.

Referring to fig. 3 again, a plurality of protruding limiting protrusions 72 are further disposed on the wire passing hole 71, and the limiting protrusions 72 are used for fixing the wire harness body 51. Specifically, the limiting projection 72 is an upward protruding portion straddling the wire passing hole 71, and a plurality of limiting projections 72 are provided, and the wire harness body 51 is limited on the limiting projection 72, thereby preventing the wire harness from loosening in the event of large vibration.

Referring to fig. 4 again, the stub PCB 6 is further connected with a pressing block 8, and when the second end 53 of the wire harness 5 is connected to the stub PCB 6, the pressing block 8 presses the wire harness body 51, thereby preventing the end of the wire harness 5 from being loosened in a vibration environment.

Wherein the motor 1 includes: the motor comprises a motor shell 12, a stator arranged in the motor shell 12, a rotor penetrating the stator and a worm connected to the rotor, wherein the stator, the rotor and the worm are all conventional structures of the existing motor; the motor housing 12 includes a housing main body (i.e., a cylindrical body) having an open end to which the control circuit board 4 is connected and a closed end. The control circuit board 4 is used for receiving signals detected by the sensor assembly 3 and controlling the motor to rotate, so that parking is achieved. The control circuit board 4 is connected to the opening end of the motor housing 12, and is convenient to assemble and maintain. The motor housing 12 is further connected with a plug-in unit 11, and the plug-in unit 11 is used for being electrically connected with an external power supply and a controller.

The speed reducer 2 includes: the reducer housing 21, a worm gear (not shown) connected to the worm, and a spindle head magnet (not shown) disposed in the reducer housing 21, and the structure of the reducer 2 is also a conventional reducer, which will not be described herein. The reducer casing 21 includes a casing body 211, and a connection cover 212 extending from the casing body 211, wherein the connection cover 212 is connected to the opening end.

Referring to fig. 5 again, the first end 52 of the wire harness 5 is a double-row terminal structure, and the first end 52 is connected to the control circuit board 4 by welding.

The second end 53 of the wire harness 5 is of a single-row wire head structure, and the second end 53 is connected with the shaft head PCB 6 in a welding mode. The two ends of the wire harness 5 are designed to have different wire end arrangements in order to effectively utilize the limited space in the motor and sensor assembly.

In this embodiment, the harness is a 6PIN harness. The working principle is as follows: the controller module senses a shaft head magnet on the speed reducing mechanism through the shaft head plate, and a feedback signal is transmitted to the control plate. The control panel controls the rotation of the motor through current according to the signal fed back by the shaft head plate. The motor pushes the gear of the speed reducing mechanism to rotate through the worm to achieve the function of controlling the parking angle.

Referring to fig. 6 to 12 again, an embodiment of the present invention further discloses a method for assembling a wire integrated in a parking motor, where the method is used to assemble the above-mentioned wire structure integrated in a parking motor, and includes the following steps:

soldering a first end of the wire harness to the control circuit board;

welding a second end of the wire harness to a welding point on the shaft head PCB, and locking the shaft head PCB in the lower cover;

and locking the upper cover of the sensor assembly on the lower cover.

Compared with the prior art, the wiring structure integrated in the parking motor and the wiring assembly method thereof have the advantages that the wiring harness penetrates through the motor, the speed reducer and the sensor assembly, the wiring harness body and the end portion of the wiring harness are pressed and fixed or limited through the pressing block and the limiting protrusion, in order to save wiring space, the first end of the wiring harness is designed into a double-row wire head, the other end of the wiring harness is a single-piece cable, so that the limited space inside the motor and the sensor assembly is adapted, the application scene of large vibration is finally realized, and the reliability of electric connection of the wiring harness is guaranteed.

The technical contents of the present invention are further illustrated by the examples only for the convenience of the reader, but the embodiments of the present invention are not limited thereto, and any technical extension or re-creation based on the present invention is protected by the present invention. The protection scope of the invention is subject to the claims.

Claims

1. A wire routing structure integrated in a parking motor, comprising: the motor, the reducer and the sensor assembly; the worm of the motor is connected with the turbine of the speed reducer, and the sensor assembly is connected with the speed reducer; the electric motor is characterized in that a control circuit board is further arranged in the electric motor, a spindle nose PCB is further arranged in the sensor assembly, the control circuit board is electrically connected with the spindle nose PCB through a wire harness, the wire harness is provided with a wire harness body, and a first end and a second end which are arranged at two ends of the wire harness body, the first end is electrically connected with the control circuit board, the second end is electrically connected with the spindle nose PCB, and the wire harness body penetrates through the speed reducer.

2. The routing structure integrated in a parking motor according to claim 1, wherein the sensor assembly comprises: the lower cover and the upper cover jointly enclose a cavity, and the spindle head PCB is arranged in the cavity; the lower cover is provided with a wire passing hole for the wiring harness to penetrate through, and the wire passing hole extends and is distributed along the bottom surface of the lower cover to form a strip-shaped hole.

3. The routing structure integrated in the parking motor according to claim 2, wherein a plurality of protruding limiting protrusions are further disposed on the wire passing hole, and the limiting protrusions are used for fixing the wire harness body.

4. The routing structure integrated in the parking motor according to claim 2, wherein a pressing block is further connected to the spindle nose PCB, and when the second end of the wire harness is connected to the spindle nose PCB, the pressing block presses the wire harness body.

5. The routing structure integrated in a parking motor according to claim 1, wherein the motor comprises: the worm gear comprises a motor shell, a stator arranged in the motor shell, a rotor penetrating through the stator and a worm connected to the rotor; the motor housing includes a housing body having an open end and a closed end, the control circuit board being connected to the open end.

6. The routing structure integrated in a parking motor according to claim 5, wherein the speed reducer includes: the worm wheel is connected with the worm, and the spindle head magnet is arranged in the speed reducer shell; the reducer shell comprises a shell body and a connecting cover extending out of the shell body, and the connecting cover is connected to the opening end.

7. The routing structure integrated in a parking motor according to claim 1, wherein the first end of the wire harness is a double-row wire head structure, and the first end is connected to the control circuit board by welding.

8. The routing structure integrated in the parking motor according to claim 7, wherein the second end of the wire harness is of a single-row wire head structure, and the second end is connected with the spindle head PCB board by welding.

9. A method for assembling a wire routing structure integrated in a parking motor according to any one of claims 1 to 8, comprising the steps of:

soldering a first end of the wire harness to the control circuit board;

and locking the upper cover of the sensor assembly on the lower cover.

10. The method for assembling the wire harness integrated in the parking motor according to claim 9, wherein the step of "locking the upper cover of the sensor assembly on the lower cover" further comprises: and dispensing on the lower cover or the upper cover so that the upper cover and the lower cover are connected in a sealing manner.