Transmission input rotating speed sensor

Abstract

A transmission input rotating speed sensor belongs to the technical field of transmissions. Comprising a sensor assembly, a positioning pin and a bolt. The sensor assembly is fixed on the valve body through matching of a positioning pin and a bolt, and the sensor assembly corresponds to the signal strand; the sensor assembly comprises a sensor body and a support which are integrated together, and an interface of the sensor body is connected with the sensor connector. The sensor is high in part integration level, compact in structure, does not occupy extra cabin space, is simple and convenient to mount as an original sensor, and has the same data as the original sensor due to the borrowing of an internal chip.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of transmission, and particularly relates to a transmission input rotating speed sensor. BACKGROUND

[0002] The input rotating speed sensor is an important component in an automatic transmission (AT), which is responsible for detecting the rotating speed of the input shaft of the transmission. The input rotating speed sensor is usually installed inside the automatic transmission housing and connected to the transmission control solenoid assembly through a wire harness and a connector.

[0003] When the input shaft rotates, the sensor generates a signal frequency according to the teeth of the variable reluctance rotor, and the signal frequency is proportional to the rotating speed of the input shaft. The sensor transmits the signal to the transmission computer through the input rotating speed sensor signal circuit, and the computer adjusts the shift pattern and pipeline pressure of the transmission according to the signal to ensure that the transmission can work normally.

[0004] The existing input rotating speed sensor cannot be adapted to the newly developed rear-drive high-torque transmission. CONTENT OF THE UTILITY MODEL

[0005] The utility model discloses a transmission input rotating speed sensor to solve the above problems.

[0006] The technical scheme adopted by the utility model is:

[0007] A transmission input rotating speed sensor, comprising a sensor assembly, a positioning pin and a bolt, wherein the sensor assembly is fixed on the valve body through the positioning pin and the bolt, and the sensor assembly corresponds to a signal strand.

[0008] The sensor assembly comprises a sensor body and a bracket integrated together, and the interface of the sensor body is connected with a sensor connector.

[0009] Compared with the prior art, the utility model has the following beneficial effects:

[0010] The utility model has high part integration, compact structure, does not occupy additional cabin space, is installed in the same way as the original sensor, is simple and convenient, internally borrows a chip, and has the same data as the original sensor. DRAWING EXPLANATION

[0011] Figure 1 Is the structure schematic diagram of the utility model;

[0012] Figure 2 Is the sensor assembly structure schematic diagram of the utility model;

[0013] Figure 3 Is the sensor body and signal strand cooperation schematic diagram of the utility model;

[0014] Figure 4 This is a schematic diagram showing the dimensions of the sensor body and the bracket of this utility model;

[0015] Figure 5 This is a schematic diagram illustrating the calculation of the horizontal distance X from the sensing surface to the center of the signal strand axis in this utility model.

[0016] Figure 6 This is a schematic diagram illustrating the calculation of the vertical distance Y from the sensing surface to the center of the signal strand in this utility model.

[0017] The components are: 1. Sensor assembly; 2. Valve body; 3. Signal strand; 4. Sensor body; 5. Bracket; 6. Sensor connector; 7. Positioning pin; 8. Bolt; 9. Sensing surface; 10. Shaft; 11. Sensing gap; 12. Distance from housing mass point to signal strand shaft center; 13. Distance from housing mass point to sensor mounting point; 14. Distance from sensor mounting point to sensing center; 15. Distance from signal strand shaft center to valve body; 16. Vertical distance from valve body to sensing surface; 17. Sensing wheel radius; 18. Distance from sensing wheel shaft center to sensing surface. Detailed Implementation

[0018] To better understand the purpose, structure, and function of this utility model, a more detailed description of this utility model will be provided below with reference to the accompanying drawings.

[0019] The input speed sensor described in this invention is positioned the same as the original sensor, on the valve body. The sensor chip is borrowed from the original mass-produced sensor; however, to adapt to the new input sensor signal, an integrated bracket and modifications to the sensor housing dimensions are used.

[0020] Specifically:

[0021] This utility model provides a transmission input speed sensor, including a sensor assembly 1, a locating pin 7, and a bolt 8; as shown... Figure 1 As shown, the sensor assembly 1 is fixed to the valve body 2 by the cooperation of the positioning pin 7 and the bolt 8, and the sensor assembly 1 corresponds to the signal strand 3;

[0022] like Figure 2 As shown, the sensor assembly 1 includes a sensor body 4 and a bracket 5 integrated together. The interface of the sensor body 4 is connected to the sensor connector 6. The sensor connector 6 also uses the mass-produced sensor interface, which is convenient for procurement and has a lower cost.

[0023] like Figure 3 As shown, the sensing surface 9 of the sensor body 4 is tangentially engaged with the signal strand 3 and corresponds to the axis 10 of the signal strand 3.

[0024] The sensor body 4 and the positioning pin 7 are respectively arranged at both ends of the support 5, and the bolt 8 is arranged at the middle position of the support 5.

[0025] As shown in the figure, the sensor body 4 is integrated with the support 5 in size, and the size is determined according to the previous experience of the original batch production transmission and sensor supplier. Figure 4

[0026] As shown in the figure, the distance from the shell point to the signal stock axis center is 12, the distance from the shell point to the sensor mounting point is 13, the distance from the sensor mounting point to the induction center is 14, and the distance from the induction surface to the signal stock axis horizontal distance X is equal to the sum of the three distances. Figure 5

[0027] As shown in the figure, the distance from the signal stock axis center to the valve body is 15, the distance from the valve body to the induction surface is 16, and the distance from the induction surface to the signal stock axis vertical distance Y is equal to the sum of the two distances. Figure 6

[0028] According to the Pythagorean theorem, the distance from the induction wheel axis center to the induction surface is 18, the induction wheel radius is 17, and the induction gap 11 is equal to the difference between the two distances.

[0029] After evaluation, the induction gap can meet the use requirement.

[0030] In summary, the transmission input speed sensor structure and arrangement form provided by the utility model have the same chip data, connector and installation as the original batch production, the production line installation is more convenient, the same connector can reduce the development cost, the integrated support and the newly designed sensor are matched with the newly developed signal stock, and the rear drive large torque transmission new project is adapted.

[0031] It can be understood that the utility model is described through some embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to the features and embodiments without departing from the spirit and scope of the utility model. In addition, under the guidance of the utility model, the features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application belong to the scope protected by the utility model.​​​

Claims

1. A transmission input speed sensor, characterized in that: It includes a sensor assembly (1), a positioning pin (7), and a bolt (8); the sensor assembly (1) is fixed to the valve body (2) by the positioning pin (7) and the bolt (8), and the sensor assembly (1) corresponds to the signal strip (3); The sensor assembly (1) includes a sensor body (4) and a bracket (5) integrated together, and the interface of the sensor body (4) is connected to the sensor connector (6).

2. The transmission input speed sensor according to claim 1, characterized in that: The sensing surface (9) of the sensor body (4) is tangentially fitted to the signal strand (3) and corresponds to the axis (10) of the signal strand (3).

3. A transmission input speed sensor according to claim 1, characterized in that: The sensor body (4) and the positioning pin (7) are respectively set at both ends of the bracket (5), and the bolt (8) is set at the middle position of the bracket (5).

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