Wire harness fixing structure of sensor

Abstract

The utility model relates to an installation structure of a wire harness. A wire harness fixing structure of a sensor comprises a sensor shell, one end of the sensor shell is provided with a wire harness leading-out end, the wire harness leading-out end is provided with a pressing plate containing cavity, and two parallel cavity walls forming the pressing plate containing cavity are provided with a plurality of wire harness fixing grooves and a plurality of wire harness leading-out grooves respectively; a pressing plate is installed in the pressing plate containing cavity and comprises a cover plate body and a pressing plate body, a wire harness guide groove is formed in the pressing plate body, and a wire harness passes through the wire harness fixing groove and the wire harness guide groove and then is guided out through the wire harness guide-out groove. The wire harness fixing structure of the sensor provided by the utility model is simple in structure, can effectively prevent the wire harness from being pulled and broken, and ensures the stability of wire harness connection. The technical problem that in the prior art, when a wire harness of a sensor is transmitted out of a shell from a welding end of a PCB, the wire harness is prone to being pulled and broken, and therefore the sensor fails is solved.

Description

Technical Field

[0001] The utility model relates to an installation structure of a wire harness, in particular to a wire harness fixing structure of a sensor. Background Art

[0002] In the current automotive field, the application of sensors is already very common. According to the different functions of various automotive components, selecting different sensors is a very widely used structure. On the main drive motor of a vehicle, we generally install a motor angle sensor according to requirements. After the motor angle sensor collects data signals, the signals need to be transmitted to a controller outside the housing through a wire harness. One end of the wire harness is welded to a PCB board, and the other end of the wire harness extends out of the housing. In the current traditional solution, the sensor wire harness is loose. During use, due to vehicle driving conditions and other factors, the wire harness will continuously pull and break against the resin surface as the vehicle vibrates, resulting in sensor failure. Summary of the Invention

[0003] The utility model provides a wire harness fixing structure of a sensor with a simple structure, which can effectively prevent the wire harness from being pulled and broken and ensure the stability of the wire harness connection; it solves the technical problem in the prior art that the wire harness of the sensor is easily pulled and broken when transmitted from the welding end of the PCB board to the outside of the housing, resulting in sensor failure.

[0004] The above technical problem of the utility model is solved by the following technical solution: A wire harness fixing structure of a sensor includes a sensor housing. At one end of the sensor housing, there is a wire harness outlet end. One end of the wire harness is fixed to a PCB board inside the housing, and the other end of the wire harness is led out through the wire harness outlet end. The wire harness outlet end is provided with a pressing plate accommodating cavity. On two mutually parallel cavity walls forming the pressing plate accommodating cavity, a plurality of wire harness fixing grooves and a plurality of wire harness outlet grooves are respectively opened, and the wire harness fixing grooves and the wire harness outlet grooves correspond one by one. A pressing plate is installed in the pressing plate accommodating cavity. The pressing plate includes a cover plate main body and a pressing plate main body. A wire harness guiding groove is opened on the pressing plate main body, and the wire harness guiding groove corresponds to the wire harness fixing groove one by one. The wire harness is led out through the wire harness outlet groove after passing through the wire harness fixing groove and the wire harness guiding groove. One end of the wire harness is welded to the PCB board. The wire harness fixing groove first fixes the wire harness. When the wire harness continues to be led out, the wire harness is further pressed and fixed in the accommodating cavity by the pressing plate, and then the wire harness is separated and guided through the wire harness outlet groove without knotting, thereby ensuring the firmness of the wire harness connection, preventing pulling and breaking, and improving the stability of the sensor.

[0005] Preferably, the wire harness is in interference fit with the wire harness fixing groove. The wire harness is fixed in the wire harness fixing groove through interference fit, and the structure is simple.

[0006] Preferably, the wire harness is in clearance fit with the wire harness outlet groove.

[0007] Preferably, the bottom of the wire harness fixing groove is lower than the bottom of the wire harness guiding groove, and the wire harness forms a Z-shape when passing from the wire harness fixing groove to the wire harness guiding groove. This allows the wire harness to transition from low to high, forming a buffer and fixing section for the wire harness, providing space for the pressing plate to fix and compress the wire harness. At the same time, through a high-low zigzag change, it can further improve the tensile and anti-fracture performance of the wire harness.

[0008] Preferably, the bottom of the wire harness guiding groove is an inclined arc surface. It slopes upward from the wire harness fixing groove, conforming to the wire harness's running direction. At the same time, the arc transition has a good effect, enabling the wire harness to be smoothly guided out.

[0009] Preferably, both ends of the accommodation cavity are provided with a pressing plate guiding groove and a pressing plate positioning card slot. At both ends of the pressing plate, there are a guiding post and a positioning post. The guiding post is located in the pressing plate guiding groove, and the positioning post is in interference fit with the positioning card slot. The pressing plate is fixed in the pressing plate accommodation cavity through interference fit, with a simple structure and convenient installation.

[0010] Preferably, the wire harness guiding groove on the lower surface of the pressing plate body is arc-shaped, and the bottom of the wire harness guiding groove is pressed against the upper surface of the wire harness. The wire harness guiding groove on the lower surface of the pressing plate can organize the wire harness for convenient guiding out. At the same time, the bottom of the groove presses down on the wire harness, which can fix the wire harness and prevent it from loosening.

[0011] Preferably, the cover plate body abuts against the cavity wall where the wire harness guiding groove starts. This positions the pressing plate, facilitating installation.

[0012] Preferably, a support platform is provided on one side of the accommodation cavity close to the wire harness fixing groove, and the height of the support platform is flush with the bottom of the wire harness fixing groove. This facilitates the fixing of the wire harness and the pressing of the pressing plate.

[0013] Preferably, the wire harness uses twisted pair wires and is provided with a sleeve outside the wire harness. This restricts the wire harness and prevents crosstalk between wire harnesses.

[0014] Therefore, a wire harness fixing structure of a sensor according to the present utility model has the following advantages: By setting the current fixing groove with interference fit, the wire harness led out from the PCB board is first fixed on the housing, and then the wire harness is further pressed firmly by the pressing plate and effectively prevented from loosening. The wire harness on the pressing plate is guided to the wire harness guiding groove on the housing through the wire harness guiding groove on the pressing plate and led out through the wire harness guiding groove. Through the connection and cooperation of each groove, the independence of each wire harness is good, and the wire harness is locked, effectively preventing the problem of wire harness pulling and breaking, and improving the stability and anti-electromagnetic interference ability of the sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional installation view of a wire harness fixing structure of a sensor.

[0016] Figure 2 is Figure 1 The three-dimensional enlarged view of the housing at location A.

[0017] Figure 3 is Figure 2 The view from another perspective.

[0018] Figure 4 is the three-dimensional view of the pressure block.

[0019] Figure 5 is Figure 1 The sectional view at location A. Detailed implementation manners

[0020] The technical solution of the utility model will be further specifically described below through embodiments in conjunction with the accompanying drawings.

[0021] Embodiment:

[0022] As Figure 1 shown, a wire harness fixing structure of a sensor includes a sensor housing 1, a PCB board 2 is installed in the sensor housing 1, and the pins of the PCB board 2 are welded to the wire harness 5. The wire harness 5 extends from the PCB board 2 and is led out from the wire harness outlet end 4 of the housing. The wire harness 5 uses twisted pairs and a sleeve 6 is provided outside the wire harness. After being led out from the outlet end, the wire harness is connected to a connector 7.

[0023] As Figure 2 and 3 shown, a pressure plate accommodating cavity 10 is formed at the wire harness outlet end 4. The two cavity walls of the pressure plate accommodating cavity 10 have different heights. A plurality of wire harness fixing grooves 8 are formed on the cavity wall close to the PCB board 2, and a plurality of wire harness outlet grooves 9 are formed on the other parallel cavity wall. The number of the wire harness fixing grooves 8 and the wire harness outlet grooves 9 is the same, and the wire harness fixing grooves 8 and the wire harness outlet grooves 9 are in one-to-one correspondence and located on the same straight line. The bottom of the wire harness fixing groove 8 is lower than the bottom of the wire harness outlet groove 9, and the bottom of the wire harness outlet groove 9 is an inclined arc surface. The wire harness forms a Z shape when passing from the wire harness fixing groove 8 to the wire harness outlet groove 9. A support platform 13 is provided on the side of the pressure plate accommodating cavity 10 close to the wire harness fixing groove 8, and the height of the support platform 13 is flush with the bottom of the wire harness fixing groove 8. Pressure plate guiding grooves 12 and pressure plate positioning grooves 11 are provided at both ends of the pressure plate accommodating cavity 10, and the pressure plate guiding grooves 12 and the pressure plate positioning grooves 11 are connected to form a T shape after connection.

[0024] As Figure 4 and 5As shown in the figure, a pressure plate 3 is installed in the pressure plate accommodation cavity. The pressure plate includes a pressure plate main body 17 and a cover plate main body 16. Positioning columns 15 and guiding columns 14 are provided at both ends of the pressure plate main body 17. The positioning column 15 is located in the pressure plate positioning card slot 11 of the pressure plate accommodation cavity, and the guiding column 14 is located in the pressure plate guiding slot 12 of the pressure plate accommodation cavity. The cover plate main body 16 is a flat plate, and the cover plate main body 16 abuts against the cavity wall on the side of the accommodation cavity where the wire harness lead-out groove 9 is provided. The lower end surface of the pressure plate main body 17 is arc-shaped, and an arc-shaped wire harness guiding groove 18 is formed on the pressure plate main body 17, and the groove bottom 19 of the pressure plate main body abuts against the wire harness 5.

[0025] The wire harness is first fixed in the wire harness fixing groove through interference fit, and then passes through the pressure plate accommodation cavity. The wire harness is pressed against the wire harness fixing groove by the pressure plate. At the same time, the wire harness is separated by the wire harness guiding groove on the pressure plate, and then the wire harness is led out through the wire harness lead-out groove through clearance fit.

[0026] The specific embodiments described herein are merely illustrative of the concept of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A wire harness fixing structure for a sensor, comprising a sensor housing, with a wire harness lead-out end provided at one end of the sensor housing, one end of the wire harness being fixed to a PCB board inside the housing, and the other end of the wire harness being led out through the wire harness lead-out end, characterized in that: The wire harness leading end is provided with a pressing plate accommodating cavity. On two mutually parallel cavity walls forming the pressing plate accommodating cavity, a plurality of wire harness fixing grooves and a plurality of wire harness leading grooves are respectively formed, and the wire harness fixing grooves and the wire harness leading grooves are in one-to-one correspondence; a pressing plate is installed in the pressing plate accommodating cavity. The pressing plate includes a cover plate main body and a pressing plate main body. A wire harness guiding groove is formed on the pressing plate main body, and the wire harness guiding grooves are in one-to-one correspondence with the wire harness fixing grooves. The wire harness is led out through the wire harness fixing grooves and the wire harness guiding grooves and then through the wire harness leading grooves.

2. The wire harness fixing structure of a sensor according to claim 1, characterized in that: The wire harness is in interference fit with the wire harness fixing groove.

3. The wire harness fixing structure of a sensor according to claim 1, characterized in that: The wire harness is in clearance fit with the wire harness leading groove.

4. A wire harness fixing structure of a sensor according to claim 1 or 2 or 3, characterized in that: The bottom of the wire harness fixing groove is lower than the bottom of the wire harness leading groove, and the wire harness forms a Z shape when going from the wire harness fixing groove to the wire harness leading groove.

5. The wire harness fixing structure of a sensor according to claim 1 or 2 or 3, characterized in that: The bottom of the wire harness leading groove is an inclined arc surface.

6. The wire harness fixing structure of a sensor according to claim 1 or 2 or 3, characterized in that: Both ends of the accommodating cavity are provided with a pressing plate guiding groove and a pressing plate positioning clamping groove. At both ends of the pressing plate, a guiding column and a positioning column are provided. The guiding column is located in the pressing plate guiding groove, and the positioning column is in interference fit with the positioning clamping groove.

7. A wiring harness fixing structure of a sensor according to claim 1 or 2 or 3, characterized in that: The wire harness guiding groove on the lower surface of the pressing plate main body is arc-shaped, and the bottom of the wire harness guiding groove is pressed against the upper surface of the wire harness.

8. The wire harness fixing structure of a sensor according to claim 1 or 2 or 3, characterized in that: The cover plate main body abuts against the cavity wall provided with the wire harness leading groove.

9. A wire harness fixing structure of a sensor according to claim 1 or 2 or 3, characterized in that: A support platform is provided on one side of the accommodating cavity close to the wire harness fixing groove, and the height of the support platform is flush with the bottom of the wire harness fixing groove.

10. A wire harness fixing structure for a sensor according to claim 1 or 2 or 3, characterized in that: The wire harness adopts twisted pair wires and a sleeve is provided outside the wire harness.

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