Gear shifting trend sensor

Abstract

The utility model relates to a gear shifting trend sensor, which comprises a shell, a tension-compression conversion assembly, a tail cover screwed at one end of the shell, a wiring harness pressing sleeve sleeved at the other end of the shell, a PCBA circuit board arranged between the shell and the wiring harness pressing sleeve, and a PCB bracket with a C-shaped structure, a mounting groove for mounting the PCB bracket is formed in the shell in the wire harness pressing sleeve, an open groove is formed in the middle of the PCB bracket, positioning columns are arranged on the PCB bracket on two sides of the open groove and on the PCB bracket on one side of the tail cover, and positioning holes matched with the positioning columns are formed in the PCB bracket. The PCB support of the C-shaped structure, the positioning columns on the PCB support and the positioning holes in the PCBA circuit board are used in a matched mode, the displacement or loosening phenomenon possibly occurring in the installation process of the PCBA circuit board is effectively avoided, the fixing performance of the PCBA circuit board in the sensor is ensured, and therefore the reliability of the whole device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, and particularly relates to a shift trend sensor for a motorcycle. Background Art

[0002] With the development of the automotive industry, the degree of automation of vehicles has been continuously improved, especially the application of automatic transmissions is becoming more and more widespread. In order to improve the driving experience and vehicle performance, the gear sensor, as an important part of the automatic transmission control system, plays an important role. Traditional gear sensors mostly adopt mechanical designs, but with the progress of electronic technology, more and more electronic gear sensors have been developed, which not only improve the accuracy but also enhance the reliability of the system.

[0003] Most of the existing gear sensors are composed of a housing, a tension-compression conversion component, a tail cover, a wire harness bushing, and a PCBA circuit board. Among them, the PCBA circuit board, as the core part of the sensor, is responsible for converting physical signals into electrical signals, and after corresponding signal processing, it is transmitted to the vehicle control system. However, in actual applications, it is found that due to the lack of an effective positioning and installation mechanism, the PCBA circuit board is prone to instability during the installation process, which not only affects the reliability of the sensor operation but also may cause signal transmission errors, thus affecting the operation performance of the entire vehicle.

[0004] In order to overcome the deficiencies in the prior art, this application proposes a new design scheme for a shift trend sensor. This scheme aims to solve the problem of unstable installation of the PCBA circuit board in traditional sensors. Content of the Utility Model

[0005] In view of the deficiencies in the background art, the utility model provides a shift trend sensor.

[0006] The technical solution adopted by the utility model is: a shift trend sensor, including a housing, a tension-compression conversion component, a tail cover screwed onto one end of the housing, a wire harness bushing sleeved on the other end of the housing, and a PCBA circuit board arranged between the housing and the wire harness bushing. It further includes a PCB bracket with a "C" shape. An installation groove for installing the PCB bracket is provided on the housing located inside the wire harness bushing. A slot is provided in the middle of the PCB bracket. Positioning posts are provided on the PCB bracket on both sides of the slot and on the PCB bracket on one side of the tail cover. Positioning holes adapted to the positioning posts are provided on the PCB bracket.

[0007] Furthermore, hook steps are provided on the inner walls on both sides of the PCB bracket, and fixed steps for connecting with the above hook steps are provided on the side walls on both sides of the installation groove.

[0008] Further, a wire harness groove for the wire harness of the PCBA circuit board to pass through extends from one end of the installation groove away from the end cap.

[0009] Further, annular grooves are provided at both ends of the installation groove, and first "O" - shaped sealing rings are installed in the annular grooves.

[0010] Further, the tension - compression conversion assembly includes a tension - compression rod, a spring sleeve, a spring, a spring cover, a circlip, and a magnet. After the spring sleeve, the spring, and the spring cover are sleeved on the tension - compression rod, they are positioned by the circlip. The top of the tension - compression rod extends into the acting hole in the installation groove, and the tail of the tension - compression rod with external threads extends outside the end cap. The magnet is installed in the installation hole at the top of the tension - compression rod.

[0011] Further, a second "O" - shaped sealing ring is sleeved between the end cap and the housing.

[0012] Further, fixing screw holes are provided at one end of the housing away from the end cap.

[0013] The beneficial effects of the present utility model are as follows:

[0014] 1. Improve installation stability: By using the "C" - shaped PCB bracket and the positioning posts thereon in cooperation with the positioning holes on the PCBA circuit board, the displacement or loosening phenomenon that may occur during the installation of the PCBA circuit board is effectively avoided, ensuring the fixation of the PCBA circuit board inside the sensor, thereby improving the reliability of the overall device.

[0015] 2. Enhance the accuracy of signal transmission: The stable installation reduces the signal transmission error caused by the vibration or movement of the PCBA circuit board, enabling the sensor to transmit the gear position change information to the vehicle control system more accurately, improving the smoothness and response speed of the shifting process.

[0016] 3. Simplify the assembly process: By adopting the design of positioning posts and positioning holes, the installation steps of the PCBA circuit board are simplified, making the assembly process more convenient and efficient, reducing production costs, and improving production efficiency.

[0017] In addition to the purposes, features, and advantages described above, the present utility model has other purposes, features, and advantages.

[0018] Next, the present utility model will be described in further detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the present utility model.

[0020] Figure 2 is an exploded schematic diagram of the present utility model.

[0021] Figure 3 This is a schematic cross-sectional view of the present utility model.

[0022] Figures 1 - 3 Wherein: 1. Outer shell; 3. Tail cover; 4. Wiring harness bushing; 5. PCBA circuit board; 6. PCB bracket; 7. Installation groove; 8. Slotted opening; 9. Positioning post; 10. Positioning hole; 11. Hook step; 12. Fixed step; 13. Wiring harness; 14. Wiring harness groove; 15. Annular groove; 16. First "O" - shaped sealing ring; 17. Pull - and - press rod; 18. Spring sleeve; 19. Spring; 20. Spring cover; 21. Snap ring; 22. Magnet; 23. Acting hole; 24. External thread; 25. Installation hole; 26. Second "O" - shaped sealing ring; 27. Fixed screw hole. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0024] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0025] The present utility model provides a shift trend sensor.

[0026] In this embodiment, referring to Figures 1 - 3 , the shift trend sensor includes an outer shell 1, a pull - and - press conversion assembly, a tail cover 3 screwed onto one end of the outer shell 1, a wiring harness bushing 4 sleeved on the other end of the outer shell 1, and a PCBA circuit board 5 disposed between the outer shell 1 and the wiring harness bushing. It further includes a "C" - shaped PCB bracket 6. An installation groove 7 for installing the PCB bracket is provided on the outer shell within the wiring harness bushing. A slotted opening 8 is provided in the middle of the PCB bracket 6. Positioning posts 9 are provided on both sides of the slotted opening 8 on the PCB bracket and on the PCB bracket on one side of the tail cover. Positioning holes 10 adapted to the positioning posts are provided on the PCB bracket.

[0027] In the above technical solution, by adding the design of the PCB bracket with a "C" shape, its positioning posts and positioning holes, the problem of unstable installation of the PCBA circuit board is effectively solved. This design ensures the stable installation of the PCBA circuit board inside the sensor, reduces signal distortion caused by vibration or mechanical stress, and improves the reliability and accuracy of the sensor.

[0028] Adopting the structure of positioning posts and positioning holes to limit the PCBA circuit board, without using fasteners such as bolts for fixation, not only can ensure its stable installation, but also is convenient for installing the PCBA circuit board and reduces costs.

[0029] In addition, the positioning posts and positioning holes are distributed in a triangular pattern to ensure the stability of positioning.

[0030] Specifically, hook steps 11 are provided on the inner walls of both sides of the PCB bracket, and fixing steps 12 for connecting with the above hook steps are provided on the side walls of both sides of the installation groove.

[0031] In the above technical solution, hook steps are provided on the inner walls of both sides of the PCB bracket, and corresponding fixing steps are provided on the side walls of both sides of the installation groove, so that a firm mechanical connection is formed between the PCB bracket and the housing. This design further enhances the fixity of the PCB bracket and is also convenient for disassembling and assembling the PCB bracket and the housing.

[0032] Specifically, a wire harness groove 14 for the wire harness 13 of the PCBA circuit board to pass through extends from one end of the installation groove away from the end cover.

[0033] In the above technical solution, the wire harness groove extended from the installation groove provides a clear path for the wire harness, avoids the chaotic winding of the wire harness inside the sensor, is also convenient for the installation and maintenance of the wire harness, and improves the assembly efficiency of the sensor and the convenience of later maintenance.

[0034] Specifically, annular grooves 15 are provided at both ends of the installation groove, and a first "O" - shaped sealing ring 16 is installed in the annular grooves 15.

[0035] In the above technical solution, annular grooves are provided at both ends of the installation groove and a first "O" - shaped sealing ring is installed, which enhances the waterproof and dust - proof performance of the sensor, protects the internal electronic components from the influence of external environmental factors, and extends the service life of the sensor.

[0036] Specifically, the tension - compression conversion component includes a tension - compression rod 17, a spring sleeve 18, a spring 19, a spring cover 20, a snap ring 21, and a magnet 22. After the spring sleeve, the spring and the spring cover are sleeved on the tension - compression rod, they are positioned by the snap ring. The top of the tension - compression rod extends into the acting hole 23 inside the installation groove, and the tail of the tension - compression rod with an external thread 24 extends outside the end cover. The magnet is installed in the installation hole 25 at the top of the tension - compression rod.

[0037] In the above technical solution, the design of the tension-compression conversion component includes a tension-compression rod, a spring sleeve, a spring, a spring cover, a circlip, and a magnet. When the tension-compression rod moves, through the interaction between the magnet at the top of the tension-compression rod and the PCBA circuit board, the sensor can accurately convert the mechanical displacement of the magnet into an electrical signal.

[0038] Specifically, a second "O" - ring seal 26 is sleeved between the end cap and the housing.

[0039] In the above technical solution, a second "O" - ring seal is provided between the end cap and the housing, which further enhances the sealing performance of the sensor, prevents moisture and dust from entering the interior of the sensor, ensures the normal operation of the sensor in a harsh environment, and improves the durability of the product.

[0040] Specifically, a fixing screw hole 27 is provided at one end of the housing away from the end cap.

[0041] In the above technical solution, a fixing screw hole is provided at one end of the housing away from the end cap, which facilitates the installation and positioning of the sensor on the vehicle, simplifies the installation process, and at the same time ensures the stability of the sensor after installation, reducing the risk of failure caused by improper installation.

[0042] All technicians should note that although the present utility model has been described according to the above - mentioned specific embodiments, the idea of the present utility model is not limited to this utility model alone. Any modification using the idea of the present utility model will be included in the scope of protection of this patent right.

Claims

1. A shift trend sensor, comprising a housing, a tension-compression conversion assembly, a tail cover screwed on one end of the housing, a harness compression sleeve sleeved on the other end of the housing, and a PCBA circuit board disposed between the housing and the harness compression sleeve, characterized in that: It also includes a PCB bracket with a "C"-shaped structure, a mounting groove for mounting the PCB bracket is provided on the outer shell located in the wiring harness compression sleeve, a slot is provided in the middle of the PCB bracket, positioning columns are provided on the PCB brackets on both sides of the slot and on the PCB bracket on one side of the tail cover, and a positioning hole adapted to the positioning column is provided on the PCB bracket.

2. The gear shift trend sensor according to claim 1, characterized in that: Hooking steps are arranged on the inner walls on both sides of the PCB bracket, and fixing steps connected with the hooking steps are arranged on the side walls on both sides of the mounting groove.

3. The gear shift trend sensor according to claim 1, characterized in that: A harness groove for passing the harness of the PCBA circuit board extends from one end of the mounting groove away from the tail cover.

4. The gear shift trend sensor according to claim 1, characterized in that: Annular grooves are provided on both ends of the installation groove, and a first "O"-shaped sealing ring is installed in the annular groove.

5. The gear shift trend sensor according to claim 1, characterized in that: The tension-compression conversion assembly includes a tension-compression rod, a spring sleeve, a spring, a spring cover, a retaining spring and a magnet. The spring sleeve, the spring and the spring cover are mounted on the tension-compression rod and positioned by the retaining spring. The top of the tension-compression rod extends into the working hole in the mounting groove, and the tail of the tension-compression rod with an external thread extends out of the tail cover. The magnet is installed in the mounting hole at the top of the tension-compression rod.

6. The gear shift trend sensor according to claim 5, characterized in that: A second "O"-shaped sealing ring is sleeved between the tail cover and the shell.

7. The gear shift trend sensor according to claim 1, characterized in that: A fixing screw hole is arranged on one end of the shell away from the tail cover.

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