Shift trend sensor

Abstract

The utility model discloses a gear shifting trend sensor which comprises a shell, two annular pressing sleeves are fixedly connected in the shell, a transmission shaft capable of moving in the length direction of the transmission shaft is arranged on the pressing sleeves in a penetrating mode, the end, located in the shell, of the transmission shaft is fixedly connected with a magnet, and the side face of the shell is fixedly connected with a rubber sleeve. A circuit board is arranged on the side, close to the shell, of the rubber sleeve, a linear displacement sensor is arranged on the circuit board, and the transmission shaft is sleeved with a compression spring with the two ends connected with the pressing sleeves. The utility model has the advantages that signals are induced by linear displacement of a magnetic field, mechanical contact is avoided, the structure is simple, and the service life is longer.

Description

Technical Field

[0001] This utility model relates to the field of sensors, specifically a shift trend sensor. Background Technology

[0002] The sensor is installed between the shift pedal and the shift lever connector of the transmission. It serves as a mechanical connection between the shift pedal and the shift lever. Simultaneously, when powered on, it senses the driver's shifting intention. When the driver makes a shifting action, such as pressing or releasing the shift pedal, it converts the shifting action into a voltage change signal that the vehicle's ECU can recognize. The ECU can then determine whether the driver intends to upshift or downshift based on the signal, thereby adjusting the vehicle's operating conditions to allow the transmission to shift into the new gear more quickly and smoothly, thus improving the smoothness and speed of gear shifts.

[0003] The existing sensor on the market (CN216555306 U) has the following problem: changing the signal relies on the switching of a mechanical switch to change the node voltage in the circuit. The mechanical switching has a limited lifespan, so it needs to be improved. Utility Model Content

[0004] The purpose of this invention is to provide a shift trend sensor to solve the problems mentioned in the background art. It has the advantages of relying on magnetic field linear displacement sensing for signal, having no mechanical contact, simple structure, and longer life.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a shift trend sensor, comprising a housing, with two annular clamping sleeves fixedly connected inside the housing, a drive shaft that can move along its own length passing through the clamping sleeves, a magnet fixedly connected to one end of the drive shaft inside the housing, a rubber sleeve fixedly connected to the side of the housing, a circuit board disposed on the side of the rubber sleeve near the housing, a linear displacement sensor disposed on the circuit board, and a compression spring connected to both ends of the drive shaft.

[0006] By adopting the above technical solution, when the driver presses or engages the shift pedal, the drive shaft connected to the pedal will move. The movement of the drive shaft will drive the magnet to move, which will cause the magnet to move linearly relative to the linear displacement sensor. The linear displacement sensor will convert the magnetic field displacement caused by the movement of the magnet into a signal output required by the whole vehicle. During this process, the drive shaft will drive the spring guide sleeve to move, thereby compressing the spring. When there is no external force, the compressed spring will return the spring guide sleeve to its original position, which will in turn return the drive shaft to its original position. When the driver releases the shift pedal, the compressed spring inside the sensor will cause the drive shaft, along with the clamping sleeve and the magnet and other movable parts, to return to their original positions, thus preparing the trigger conditions for the next shift.

[0007] Preferably, one side of the rubber sleeve is provided with resin.

[0008] As a further embodiment of this utility model: one end of the outer shell is threadedly connected to an external threaded end cap sleeved on the outside of the transmission shaft, and the external threaded end cap is located at one end of the compression sleeve.

[0009] By adopting the above technical solution, the external thread end cap at one end of the compression sleeve plays a limiting role, thereby restricting the range of motion of the compression sleeve to a certain range.

[0010] As a further improvement of this utility model, an external sealing ring is provided between the external threaded end cap and the outer shell.

[0011] By adopting the above technical solution, the outer sealing ring increases the sealing performance.

[0012] As a further improvement of this utility model: a movable groove is provided between the drive shaft and the external threaded end cap, and a movable block is integrally connected to the side of the drive shaft.

[0013] By adopting the above technical solution, the moving slot provides space for the moving block to move.

[0014] As a further improvement of this utility model: one end of the drive shaft is fitted with a limiting block located inside the external thread end cap.

[0015] By adopting the above technical solution, the setting of the limit block increases the stability of the drive shaft during movement.

[0016] As a further improvement of this utility model: the transmission shaft is sleeved with a limiting ring located on one side of the limiting block.

[0017] By adopting the above technical solution, the setting of the limit ring plays a limiting role.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] When the driver presses or engages the shift pedal, the drive shaft connected to the pedal moves. This movement of the drive shaft causes the magnet to move, resulting in a linear displacement sensor. The linear displacement sensor converts this magnetic field displacement into a signal output required by the vehicle. During this process, the drive shaft moves the spring guide sleeve, compressing the spring. When there is no external force, the compressed spring returns the spring guide sleeve to its original position, which in turn returns the drive shaft to its original position. When the driver releases the shift pedal, the compressed spring inside the sensor causes the drive shaft, along with the compression sleeve and magnet, to return to their original positions, thus preparing the trigger conditions for the next shift. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of an embodiment;

[0021] Figure 2 This is a top view of an embodiment;

[0022] Figure 3 for Figure 2 A cross-sectional view along the AA direction.

[0023] In the diagram: 1. Outer shell; 2. Pressing sleeve; 3. Drive shaft; 4. Magnet; 5. Rubber sleeve; 6. Circuit board; 7. Linear displacement sensor; 8. Compression spring; 9. Resin; 10. External threaded end cap; 11. External sealing ring; 12. Moving groove; 13. Moving block; 14. Limiting block; 15. Limiting ring. Detailed Implementation

[0024] The technical solutions in the embodiments of this utility model are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] In this embodiment of the utility model,

[0026] A shift trend sensor, such as Figure 1-3 As shown, the device includes a housing 1, inside which two annular clamping sleeves 2 are fixedly connected. A drive shaft 3 that can move along its own length is passed through the clamping sleeve 2. A magnet 4 is fixedly connected to one end of the drive shaft 3 inside the housing 1. A rubber sleeve 5 is fixedly connected to the side of the housing 1. A circuit board 6 is provided on the side of the rubber sleeve 5 near the housing 1. A linear displacement sensor 7 is provided on the circuit board 6. A compression spring 8 connected to the clamping sleeve 2 at both ends is sleeved on the drive shaft 3.

[0027] The adhesive sleeve 5 has a resin 9 on one side.

[0028] One end of the outer casing 1 is threadedly connected to an external threaded end cap 10 sleeved on the outside of the drive shaft 3, and the external threaded end cap 10 is located at one end of the clamping sleeve 2.

[0029] An external sealing ring 11 is provided between the external threaded end cap 10 and the outer shell 1.

[0030] A movable groove 12 is provided between the drive shaft 3 and the external threaded end cap 10, and a movable block 13 is integrally connected to the side of the drive shaft 3.

[0031] One end of the drive shaft 3 is fitted with a limiting block 14 located inside the external thread end cap 10.

[0032] The drive shaft 3 is sleeved with a limiting ring 15 located on one side of the limiting block 14.

[0033] Working principle:

[0034] When the driver presses or engages the shift pedal, the drive shaft 3 connected to the pedal moves. The movement of the drive shaft 3 drives the magnet 4 to move, causing the magnet 4 to move linearly relative to the linear displacement sensor 7. The linear displacement sensor 7 converts the magnetic field displacement caused by the movement of the magnet 4 into a signal output required by the vehicle. During this process, the drive shaft 3 drives the spring guide sleeve to move, thereby compressing the compression spring 8. When there is no external force, the compression spring 8 returns the spring guide sleeve to its original position, which in turn returns the drive shaft 3 to its original position. When the driver releases the shift pedal, the compression spring 8 inside the sensor causes the drive shaft 3, along with the clamping sleeve 2 and the magnet 4, and other movable parts, to return to their original positions, thus preparing the trigger conditions for the next shift.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A shift trend sensor, comprising a housing (1), characterized in that: The housing (1) has two annular compression sleeves (2) fixedly connected inside. The compression sleeves (2) are fitted with a drive shaft (3) that can move along its own length. The drive shaft (3) is fixedly connected to a magnet (4) at one end inside the housing (1). The housing (1) has a rubber sleeve (5) fixedly connected to the side. The rubber sleeve (5) is provided with a circuit board (6) on the side near the housing (1). The circuit board (6) is provided with a linear displacement sensor (7). The drive shaft (3) is fitted with compression springs (8) whose two ends are connected to the compression sleeves (2).

2. The shift trend sensor according to claim 1, characterized in that: The sleeve (5) is provided with resin (9) on one side.

3. The shift trend sensor according to claim 1, characterized in that: One end of the outer casing (1) is threadedly connected to an external threaded end cap (10) sleeved on the outside of the drive shaft (3), and the external threaded end cap (10) is located at one end of the clamping sleeve (2).

4. The shift trend sensor according to claim 3, characterized in that: An external sealing ring (11) is provided between the external thread end cap (10) and the outer shell (1).

5. The shift trend sensor according to claim 3, characterized in that: A movable groove (12) is provided between the drive shaft (3) and the external threaded end cap (10), and a movable block (13) is integrally connected to the side of the drive shaft (3).

6. The shift trend sensor according to claim 1, characterized in that: One end of the drive shaft (3) is fitted with a limiting block (14) located inside the external thread end cap (10).

7. The shift trend sensor according to claim 6, characterized in that: The drive shaft (3) is sleeved with a limiting ring (15) located on one side of the limiting block (14).

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