CN220984916U

CN220984916U - Wire harness connecting device

Info

Publication number: CN220984916U
Application number: CN202322548156.0U
Authority: CN
Inventors: 张艳雪
Original assignee: Vitesco Automotive Wuhu Co Ltd
Current assignee: Vitesco Automotive Wuhu Co Ltd
Priority date: 2023-09-19
Filing date: 2023-09-19
Publication date: 2024-05-17
Anticipated expiration: 2033-09-19

Abstract

The present utility model relates to a wire harness connecting device, comprising: a base provided with a plurality of first through holes spaced apart from each other; and a plurality of wire harnesses penetrating the plurality of first through holes in a one-to-one correspondence, each wire harness including a first end protruding from the corresponding first through hole and a second end opposite to the first end; wherein the base comprises an annular wall extending away from the base from a first surface of the base, the annular wall defining a chamber in a circumferential direction, a bottom wall of the chamber being provided with the plurality of first through holes; a securing structure is disposed within the chamber to fixedly retain the plurality of wire harnesses within the chamber along a portion of a length thereof. The wire harness connecting device can allow an electric connecting assembly to be more compact, greatly saves the installation space of axial arrangement, and has more flexibility of a connecting structure.

Description

Wire harness connecting device

Technical Field

The utility model relates to the technical field of motors, in particular to a wire harness connecting device for a motor.

Background

Electric motors are often used extensively in various actuators to provide the power required to perform a corresponding function, the basic principle of which is to convert electrical energy into mechanical energy using the principle of electromagnetic induction. In existing motor designs, to achieve connection of the motor to the respective controller, one end of the motor is provided with an electrical interface, which typically includes a plastic connector and pins, one end of which is conductively connected to pin holes on a printed circuit board, and the other end of which is connected to a controller connector (typically the female end of the customer). Due to this connection of the pins, the overall axial height of the resulting assembly is high when the motor and the controller are connected to each other, which is very disadvantageous for application scenarios in which the layout space is limited.

Disclosure of utility model

The present utility model has been made in view of the above background, and an object of the present utility model is to provide an improved electrical connection device for an electric motor, which overcomes the above-mentioned and other drawbacks of the prior art.

According to the present utility model, there is provided a wire harness connecting device including: a base provided with a plurality of first through holes spaced apart from each other; and a plurality of wire harnesses penetrating the plurality of first through holes in a one-to-one correspondence, each wire harness including a first end protruding from the corresponding first through hole and a second end opposite to the first end; wherein the base comprises an annular wall extending away from the base from a first surface of the base, the annular wall defining a chamber in a circumferential direction, a bottom wall of the chamber being provided with the plurality of first through holes; a securing structure is disposed within the chamber to fixedly retain the plurality of wire harnesses within the chamber along a portion of a length thereof.

Advantageously, the fixing structure comprises a fixing glue poured into the chamber.

Advantageously, the base further comprises a stop rib projecting away from the base from a second surface of the base opposite the first surface.

Advantageously, the limit rib comprises at least one first limit rib extending in a first direction and at least one second limit rib extending in a second direction perpendicular to the first direction, the second limit rib intersecting the first limit rib, a plurality of mutually separated areas being defined by the first limit rib and the second limit rib, each area defining at least one first through hole.

Advantageously, an annular groove is provided on the first surface of the base around the annular wall, the annular groove being configured for receiving a sealing ring.

Advantageously, the plurality of wire harnesses comprises a plurality of groups of wire harnesses that are functionally distinct from each other.

Advantageously, each group of harnesses is bound by an insulated binding band or sleeve, respectively.

Advantageously, the plurality of wire harnesses includes a motor wire harness as a first set of wire harnesses for power and ground of the motor and a sensor wire harness as a second set of wire harnesses for power, ground and signal transmission of the sensor.

Compared with the prior art, the wire harness connecting device provided by the utility model can realize at least one of the following technical effects: since the plurality of wire harnesses included in the wire harness connecting device can be bent in a direction deviated from the axial direction of the motor, the motor controller can be made to be laterally arranged with respect to the motor main body by means of the bent portions of the plurality of wire harnesses, greatly saving the axial installation height of the entire assembly; this electrical connection is more flexible because the deformability and length of the harness are adjustable, which allows matching the corresponding connectors according to the needs of the customer.

Drawings

The above and other features and advantages of the present utility model will become more readily appreciated from the following description with reference to the accompanying drawings, in which:

Fig. 1a and 1b show a prior art motor structure in perspective and top view, respectively;

Fig. 2a and 2b show a wire harness connection device according to the present utility model in perspective views at different angles, respectively;

fig. 3 shows an assembly of the wire harness connection device according to the present utility model with a joint of a motor body and a motor controller in a perspective view;

FIG. 4 shows a cross-sectional view of the assembly of FIG. 3 taken in a longitudinal direction; and

Fig. 5 shows a cross-sectional view of the assembly of fig. 3 taken in a transverse direction, showing a printed circuit board disposed within the motor cavity.

All the figures are schematic and not necessarily to scale, and they show only those parts which are necessary in order to elucidate the utility model, the other parts being omitted or merely mentioned. That is, the present utility model may include other components in addition to those shown in the drawings.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model to those skilled in the art. It will be apparent, however, to one skilled in the art that the present utility model may be practiced without some of these specific details. The various aspects, features, embodiments and advantages below are for illustration only and should not be considered as elements or limitations of the claims unless explicitly set forth in the claims. Terms such as "first," "second," and the like are used hereinafter to describe elements of the present utility model, and these terms are used solely to distinguish between the individual elements and are not intended to limit the nature, sequence, order, or number of such elements. In addition, it should be noted that in the present specification, the same and/or functionally identical technical features are provided with the same or similar reference signs.

As mentioned in the background, in prior art motor designs, in order to achieve a connection of the motor to the motor controller, one end of the motor is provided with an electrical interface 10', which electrical interface 10' typically comprises a pin 11 'and a plastic connector 12'. As shown in fig. 1a and 1b, the pins 11' extend in a vertical direction, and have one end inserted into corresponding slots in the printed circuit board and the other end protruding out of the motor end cap to connect with the female end connector of the customer. As shown in fig. 1a, the plastic connector 12' protrudes in the axial direction through the opening of the motor end cap. If the female end connector of the customer is electrically connected to the motor by the pin, the axial height of the overall structure will be high. This is very disadvantageous for application to motorcycles which are compact in construction.

To this end, the utility model proposes an improved solution which makes it possible to save as much space as possible for the axial installation of the motor assembly and which also enables flexible adaptation to the respective connectors according to the customer requirements.

Specifically, the present utility model proposes a wire harness connecting device 10 that is advantageously applied to the motor 1. Of course, the harness connection device 10 may be used in other situations where it is desirable to make an electrical connection between two components. Hereinafter, the present utility model will specifically explain a specific structure of a motor and a wire harness connecting device applied in the motor, taking the motor application as an example.

With reference to fig. 3, an assembly comprising an electric motor is shown, which, thanks to its small axial height, can be used in particular in clutch shift actuators, for example in motorcycles. The assembly comprises a motor 1 and a joint 2, the joint 2 being connected to a motor controller. The motor 1 comprises a motor body 20, said motor body 20 comprising a housing 21, an end cap 22 and a printed circuit board 23 (see fig. 4), wherein the end cap 22 is connected to the housing 21 to jointly define a motor cavity, the printed circuit board 23 being enclosed within the motor cavity by said end cap 22.

Unlike the electrical interface 10' of the prior art, the present utility model employs a wire harness connection device 10 to electrically connect the motor to the controller, wherein the wire harness connection device 10 may include a plurality of wire harnesses 11 (e.g., flexible wire harnesses having good deformability), each of the wire harnesses 11 having a first end 11a for electrical connection with the printed circuit board 23 and a second end 11b opposite the first end 11a for electrical connection with the connector 2, thereby electrically connecting the motor 1 to the motor controller (or female end of the customer, not specifically shown).

As shown in fig. 3, the plurality of wire harnesses 11 included in the wire harness connection device 10 can be bent in a direction deviated from the axial direction of the motor 1, so that the motor controller can be laterally arranged with respect to the motor main body 20 by means of the bent portions of the plurality of wire harnesses 11. It is apparent that with such a harness connection device 10, the axial installation height of the whole assembly can be greatly saved, and in addition, since the deformability and length of the harness 11 are adjustable, this allows matching the corresponding connectors according to the needs of the customer, and thus, such an electrical connection manner employing the harness connection device 10 is more flexible and requires less space for arrangement, which is advantageous for applications in a limited space scenario (e.g., motorcycle construction).

Next, a specific structure of the wire harness connecting apparatus 10 of the present utility model will be described in detail with reference to fig. 2a and 2 b. As shown in fig. 2a and 2b, the wire harness connection device 10 includes a base 12 and a plurality of wire harnesses 11 inserted through the base 12. Specifically, the base 12 is provided with a plurality of first through holes (not specifically shown in the drawings) spaced apart from each other, and the plurality of wire harnesses 11 can be inserted into the plurality of first through holes in a one-to-one correspondence, and each wire harness 11 includes a first end 11a protruding from the corresponding first through hole and a second end 11b opposite to the first end.

Referring particularly to fig. 2b, the base 12 includes an annular wall 121 extending away from the base 12 from a first surface of the base 12 (corresponding to a surface remote from the printed circuit board 23), the annular wall 121 defining a chamber in a circumferential direction, the plurality of first through holes being provided on a bottom wall of the chamber, the bottom wall being formed as part of the base 12 such that the plurality of wire harnesses 11 extend through the chamber via the plurality of first through holes.

Advantageously, a fixing glue is poured into the chamber so that the plurality of wire harnesses 11 are fixedly held within the chamber along part of their length. It will be appreciated that, due to the long length and flexibility of the harness 11, the harness is extremely prone to rattle without any fixing measures being applied, which easily results in loosening or disengagement of the electrical connection points when the harness has been connected, e.g. soldered, to the printed circuit board of the motor, resulting in failure of the motor. However, by pouring the fixing glue in the chamber shown in fig. 2b, it is possible to keep at least a part of the length of the wire harness located in the chamber fixed, and thus not follow the movement due to bending or deformation of the free end (i.e., the second end 11 b) of the wire harness, thereby effectively avoiding loosening of the electrical connection point and improving stability and reliability of the product.

In applying the wire harness connection device to the field of motors, for example, using the wire harness connection device as an electrical interface for a motor to connect a motor body with a motor controller, in order to determine the length of a wire harness protruding from a first through hole of the base 12 for connection with a printed circuit board, the base 12 further includes a stopper rib or a stopper rib 122 protruding from a second surface of the base 12 opposite to the first surface (corresponding to a surface facing the printed circuit board) away from the base 12 (i.e., in a direction toward the printed circuit board 23 of the motor), which serves as an axial stopper structure of the wire harness connection device in a motor cavity. Since this stopper rib will directly abut on the surface of the printed circuit board 23 when the harness connecting device is assembled in the motor main body (see fig. 4), the protruding length of the stopper rib 122 will determine the protruding length of the harness 11 from the first through hole.

As a specific example, as shown in fig. 2a and 5, the limiting rib 122 includes a first limiting rib 122a extending in a first direction and three second limiting ribs 122b extending in a second direction perpendicular to the first direction, the second limiting ribs intersecting the first limiting ribs, eight areas separated from each other being defined by the first and second limiting ribs, each area defining a first through hole. Of course, other numbers of stop ribs and corresponding numbers of discrete areas and first through holes are possible depending on the particular structural arrangement.

For example, in an embodiment of the present utility model, the sensors are provided on the printed circuit board 23, and thus the plurality of wire harnesses may include a motor wire harness for power and ground of the motor and a sensor wire harness for power, ground and signal transmission of the sensors. For example, as shown in fig. 2a and 2b, the motor harness includes three wires for powering three phase (U, V, W) windings of the motor and one wire for grounding the motor. The sensor harness includes two wires for powering the sensor, one wire for grounding the sensor, and one wire for the output signal of the sensor. Thus, a total of eight harnesses are provided (as shown in fig. 2 b). With the first and second spacing ribs 122a, 122b described above, each wire harness will extend a corresponding length from the first through hole.

Subsequently, the first end 11a of the wire harness protruding from the first through hole may be electrically connected, for example by soldering, to a corresponding tin plated hole on the printed circuit board 23 as a second through hole, while the second end 11b of the wire harness opposite to the first end is intended to be electrically connected to the socket of the joint 2. The motor controller aims to power the motor via the connector 2 and is able to determine the rotational position of the rotor etc. based on the output signals of the sensors on the printed circuit board 23.

Advantageously, to avoid derailing of the wiring harnesses 11, the motor harness acts as a first set of harnesses and the sensor harness acts as a second set of harnesses, each of which may be bound by an insulated binding band 111 or sleeve.

With continued reference to fig. 4, a schematic cross-sectional view is shown in a state in which the wire harness connection device 10 is assembled in the motor main body 20 and connected to the motor main body 20 and the joint 2. An accommodation space is defined between the end cap 22 and the printed circuit board 23 of the motor 1 for partially receiving the base 12 of the wire harness connection device, in particular the wire harness connection device 10, an annular groove 123 being provided on the base 12 around the annular wall 121 (see fig. 2 b); wherein a sealing ring 30, such as an O-ring, is abutted with a pre-tension between the annular groove 123 and a corresponding receiving portion of the end cap 22 to seal the motor cavity from the external environment. The end cap 22 is provided with an opening so that the annular wall 121 of the harness connecting device 10 and the harness enclosed in the annular wall 121 can be projected from the opening to be connected with the joint 2.

The wire harness connecting device can allow an electric connection assembly (such as a motor assembly) to be more compact, greatly saves arrangement and installation space, and solves the problem of space arrangement constraint; the flexible and length-adjustable wire harness is used for replacing the rigid contact pin commonly used in the prior art, so that the connecting structure is more flexible, and therefore, different connectors or joints can be more adapted or matched.

It should be noted that the above-described embodiments should be regarded as illustrative only, and the present utility model is not limited to these embodiments. Many changes and modifications may be made by one skilled in the art without departing from the scope or spirit of the utility model, by considering the contents of this specification. The true scope of the utility model is defined by the following claims and their equivalents.

Claims

1. A wire harness connecting device, characterized in that the wire harness connecting device (10) includes:

A base (12), wherein a plurality of first through holes which are spaced apart from each other are arranged on the base (12); and

A plurality of wire harnesses (11) penetrating in the plurality of first through holes in a one-to-one correspondence, each wire harness including a first end (11 a) protruding from the corresponding first through hole and a second end (11 b) opposite to the first end;

Wherein the base (12) comprises an annular wall (121) extending away from the base from a first surface of the base, the annular wall defining a chamber in a circumferential direction, a bottom wall of the chamber being provided with the plurality of first through holes; a securing structure is provided within the chamber to fixedly retain the plurality of wire harnesses (11) within the chamber along a portion of the length thereof.

2. The wire harness attachment device of claim 1 wherein the securing structure comprises a securing glue poured into the cavity.

3. The wire harness connection device of claim 1, wherein the base (12) further comprises a spacing rib (122) projecting away from the base from a second surface of the base opposite the first surface.

4. A wire harness connecting apparatus as claimed in claim 3, wherein the limiting rib (122) comprises at least one first limiting rib (122 a) extending in a first direction and at least one second limiting rib (122 b) extending in a second direction perpendicular to the first direction, the second limiting rib intersecting the first limiting rib, a plurality of mutually separated areas being defined by the first and second limiting ribs, each area defining at least one first through hole.

5. The wire harness connection device according to claim 1, wherein an annular groove (123) is provided on the first surface of the base (12) around the annular wall (121), the annular groove being configured for receiving a sealing ring (30).

6. The wire harness connecting apparatus according to any one of claims 1 to 5, wherein the plurality of wire harnesses includes a plurality of groups of wire harnesses that are functionally different from each other.

7. The harness connection device according to claim 6, wherein each group of harnesses is bound by an insulated binding band (111) or sleeve, respectively.

8. The wire harness connection device according to claim 6, wherein the plurality of wire harnesses (11) includes a motor wire harness for power supply and grounding of the motor as a first group of wire harnesses and a sensor wire harness for power supply, grounding and signal transmission of the sensor as a second group of wire harnesses.