A type of automotive clutch tappet mechanism

Abstract

This invention relates to the field of clutch assembly technology, and discloses an automotive clutch tappet mechanism, including a clutch pedal. A hinge rod is hinged to one side of the bottom of the clutch pedal, and the end of the hinge rod away from the clutch pedal is connected to a clutch master pump. A hydraulic oil pipe is connected to the output end of the clutch master pump, and an oil supply mechanism is connected to the top of the clutch master pump. A clutch slave pump is connected to the end of the hydraulic oil pipe away from the clutch master pump, and a mounting bracket is fixedly connected to the side of the clutch slave pump. A rotating shaft is rotatably mounted on the mounting bracket, and a pusher head is movably engaged on the rotating shaft. Multiple pushers head are arranged in a ring shape, and the side of the upper pusher head abuts against a release bearing. Through the cooperation of an on / off valve, a flow sensor, a high-pressure pump, and branch pipelines, the output force of the clutch slave pump is increased, avoiding faults such as incomplete clutch disengagement and increased pedal resistance caused by insufficient pressure or abnormal flow, thereby improving the working stability of the clutch.

Description

Technical Field

[0001] This invention relates to the field of clutch assembly technology, specifically to an automotive clutch tappet mechanism. Background Technology

[0002] The clutch tappet mechanism is a core component of the clutch control system in a manual transmission vehicle. Its main function is to transmit the force exerted by the driver pressing the clutch pedal to the clutch release bearing, thereby enabling the clutch to disengage and engage, ensuring smooth gear shifting and driving safety. Existing automotive clutch tappet mechanisms mostly use a single hydraulic circuit for power supply. During long-term use, the hydraulic circuit is prone to impurities and blockages, leading to poor hydraulic oil flow and insufficient pressure. This results in insufficient output force from the clutch slave cylinder, unreliable pushing of the tappet against the release bearing, and malfunctions such as incomplete clutch disengagement, difficulty shifting gears, and abnormally increased pedal resistance, affecting normal vehicle operation. Furthermore, the tappets in existing tappet mechanisms are mostly fixed. Some models apply grease to the release bearing shaft to improve sliding performance. During long-term vehicle operation, grease can easily accumulate on the tappet, causing sluggish transmission of the release bearing. In addition, frequent pushing of the release bearing by the tappet can easily lead to wear and deformation, requiring disassembly of the entire tappet mechanism to replace the tappet. This operation is cumbersome, time-consuming, and labor-intensive, increasing maintenance costs, reducing maintenance efficiency, and shortening the overall service life of the mechanism. Therefore, we propose an automotive clutch tappet mechanism to solve the above-mentioned defects. Summary of the Invention

[0003] The purpose of this invention is to provide an automotive clutch tappet mechanism to solve the problems mentioned in the background art. To achieve the above objective, this invention provides the following technical solution: it includes a clutch pedal, a hinge rod is hinged to one side of the bottom of the clutch pedal, a clutch master pump is connected to the end of the hinge rod away from the clutch pedal, a hydraulic oil pipe is connected to the output end of the clutch master pump, and an oil supply mechanism is connected to the top of the clutch master pump. The hydraulic oil pipe is connected to a clutch slave pump at the end away from the clutch master pump. A mounting bracket is fixedly connected to the side of the clutch slave pump. A rotating shaft is rotatably mounted on the mounting bracket. A top head is movably engaged on the rotating shaft. Multiple top heads are arranged in a ring shape, and the side of the top head located at the top abuts against a release bearing. A rack is fixedly connected to the output shaft end of the clutch slave pump, and a gear meshes with the top of the rack. The gear is fixedly installed at the end of the rotating shaft. The mounting frame is equipped with a branching mechanism and a switching mechanism respectively; The branching mechanism includes an on / off valve located at the end of the hydraulic oil pipe near the clutch slave pump. A flow sensor is installed on the output shaft of the on / off valve. A high-pressure pump is connected to the output end of the on / off valve. A branch pipeline is connected to the output end of the high-pressure pump. The end of the branch pipeline away from the high-pressure pump is fed into the clutch slave pump.

[0004] Preferably, the head-changing mechanism includes a fixed ratchet fixed on the rotating shaft and symmetrical to both sides of the release bearing, a movable ratchet movably engaging with the side of the fixed ratchet, and the movable ratchet being movably connected to the rotating shaft.

[0005] Preferably, several of the top heads are respectively arranged around and fixedly mounted on the movable ratchet, and a spring is abutted at the end of the movable ratchet away from the fixed ratchet, and the spring is movably sleeved on the rotating shaft.

[0006] Preferably, a retaining ring is abutted against one end of the spring relative to the movable ratchet, and the retaining ring is fixedly connected to the rotating shaft.

[0007] Preferably, a first ratchet ring is fixedly installed on the outer side wall of the movable ratchet, and two double-headed electric cylinders are fixedly connected to the mounting bracket. The double-headed electric cylinders are respectively located at the upper and lower parts of the rotating shaft, and the ends of the output shafts of the double-headed electric cylinders abut against the side wall of the movable ratchet.

[0008] Preferably, a second docking ratchet ring is rotatably mounted on the mounting bracket. The second docking ratchet ring engages with the first docking ratchet ring. A drive motor is mounted on the bottom of the outer side wall of the second docking ratchet ring. A meshing component is rotatably mounted on the output end of the drive motor for meshing with the second docking ratchet ring and transmitting power.

[0009] Compared with the prior art, the beneficial effects of the present invention are as follows: In this invention, the hydraulic circuit switching, flow monitoring, and pressure compensation are achieved through the combination of a circuit switching mechanism, a flow sensor, a high-pressure pump, and branch pipelines. The flow sensor can monitor the hydraulic oil flow rate in real time and promptly detect problems such as oil circuit blockage or insufficient pressure. After the circuit is switched by the circuit switching valve, the high-pressure pump supplies oil to the clutch slave pump through the branch pipeline, effectively increasing the output force of the clutch slave pump, ensuring reliable pushing of the push head against the release bearing, avoiding faults such as incomplete clutch disengagement and increased pedal resistance caused by insufficient pressure or abnormal flow, and improving the working stability of the clutch. In this invention, the automatic switching and replacement of the mandrel is achieved through a mandrel-changing mechanism without disassembling the entire push rod mechanism. A double-headed electric cylinder drives the movable ratchet to move axially, disengaging it from the fixed ratchet. Then, through the meshing transmission of the drive motor, the first and second engagement ratchet rings, the movable ratchet rotates, switching the intact mandrel to the working position. After the switching is completed, a spring re-engages and locks the movable and fixed ratchet. The operation is convenient and the switching is efficient, effectively solving the problem of lag in the existing mandrel transmission separation bearing, reducing maintenance costs, and improving the performance. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a side view of the structure of the present invention; Figure 3 This is a schematic diagram of the shunting mechanism of the present invention; Figure 4 This is a schematic diagram of the head-changing mechanism of the present invention; Figure 5 This is a schematic diagram of the fixed ratchet and the movable ratchet of the present invention.

[0011] In the diagram: 1. Clutch pedal; 2. Hinge rod; 3. Clutch main pump; 4. Hydraulic oil pipe; 5. Oil supply mechanism; 6. Clutch slave pump; 7. Mounting bracket; 8. Rotary shaft; 9. Top head; 10. Release bearing; 11. Rack; 12. Gear; 13. Branching mechanism; 1301. On / off valve; 1302. Flow sensor; 1303. High-pressure pump; 1304. Branch pipeline; 14. Head changing mechanism; 1401. Fixed ratchet; 1402. Movable ratchet; 1403. Spring; 1404. Retaining ring; 1405. Dating ratchet ring one; 1406. Double-headed electric cylinder; 1407. Dating ratchet ring two; 1408. Drive motor. Detailed Implementation

[0012] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0013] Please see Figures 1 to 5 The present invention provides a technical solution: Example 1:

[0014] As shown in the figure, an automotive clutch tappet mechanism includes a clutch pedal 1. A hinge 2 is hinged to one side of the bottom of the clutch pedal 1. The end of the hinge 2 away from the clutch pedal 1 is connected to the clutch master pump 3. The output end of the clutch master pump 3 is connected to the hydraulic oil pipe 4, and the top is connected to the oil supply mechanism 5 to realize the supply and replenishment of hydraulic oil. The end of the hydraulic oil pipe 4 away from the clutch master pump 3 is connected to the clutch slave pump 6. The side of the clutch slave pump 6 is fixed with a mounting bracket 7. A rotating shaft 8 is rotatably mounted on the mounting bracket 7. Multiple circumferentially arranged top heads 9 are movably engaged on the rotating shaft 8. The side of the upper top head 9 abuts against the release bearing 10. A rack 11 is fixed to the output shaft end of the clutch slave pump 6. The top of the rack 11 meshes with a gear 12. The gear 12 is fixedly mounted on the end of the rotating shaft 8. When the clutch pedal 1 is depressed, the hinge 2 pushes the clutch master pump 3 to work. Hydraulic oil enters the clutch slave pump 6 through the hydraulic oil pipe 4, pushing the output shaft of the clutch slave pump 6 to extend, driving the rack 11 to move linearly, and then driving the gear 12 and the rotating shaft 8 to rotate, causing the top head 9 to swing and push the release bearing 10, thus completing the clutch disengagement action. The mounting frame 7 is equipped with a branching mechanism 13 and a head-changing mechanism 14. The branching mechanism 13 includes an on / off valve 1301 located at one end of the hydraulic oil pipe 4 near the clutch slave pump 6. A flow sensor 1302 is located on the output shaft of the on / off valve 1301. The output end of the on / off valve 1301 is connected to a high-pressure pump 1303. The output end of the high-pressure pump 1303 is connected to a branch pipe 1304. The other end of the branch pipe 1304 is connected to the clutch slave pump 6. During the clutch operation, the flow sensor 1302 monitors the oil flow in real time. When the system needs to increase the output thrust or compensate the pressure, the on / off valve 1301 is activated, the high-pressure pump 1303 is started, and the high-pressure pump 1303 is pressurized and supplied to the clutch slave pump 6 through the branch pipe 1304 to increase the output force of the clutch slave pump 6, ensuring that the push of the top head 9 against the release bearing 10 is reliable and avoiding incomplete separation due to insufficient pressure. Example 2:

[0015] This embodiment further describes the head-changing mechanism 14 based on embodiment 1: The head-changing mechanism 14 includes a fixed ratchet 1401 fixed on the rotating shaft 8 and symmetrically distributed on both sides of the release bearing 10. The fixed ratchet 1401 engages with a movable ratchet 1402 on its side. The movable ratchet 1402 is movably connected to the rotating shaft 8. Multiple tops 9 are fixedly arranged around the movable ratchet 1402. The end of the movable ratchet 1402 away from the fixed ratchet 1401 abuts against a spring 1403. The spring 1403 is movably sleeved on the rotating shaft 8. The end of the spring 1403 opposite to the movable ratchet 1402 abuts against a retaining ring 1404. The retaining ring 1404 is fixedly connected to the rotating shaft 8 and provides support for the spring 1403. A first docking ratchet ring 1405 is fixedly installed on the outer wall of the movable ratchet 1402. Two double-headed electric cylinders 1406 are fixed on the mounting frame 7, located at the upper and lower parts of the rotating shaft 8 respectively. The output shaft end of the double-headed electric cylinder 1406 abuts against the side wall of the movable ratchet 1402. A second docking ratchet ring 1407 is also rotatably installed on the mounting frame 7. The second docking ratchet ring 1407 is movably engaged with the first docking ratchet ring 1405. A drive motor 1408 is installed at the bottom of its outer wall. The output end of the drive motor 1408 is engaged with the second docking ratchet ring 1407 through a meshing part for transmission. When the mandrel 9 becomes worn, deformed, or needs to be switched, the double-headed electric cylinder 1406 extends, pushing the movable ratchet 1402 to move axially along the rotating shaft 8, compressing the spring 1403, causing the movable ratchet 1402 to disengage from the fixed ratchet 1401. Then, the drive motor 1408 starts, driving the docking ratchet ring 1407 to rotate. Through engagement with the docking ratchet ring 1405, the movable ratchet 1402 is driven to rotate around the rotating shaft 8, switching the intact mandrel 9 to the working position corresponding to the release bearing 10. After the switching is completed, the double-headed electric cylinder 1406 retracts, the spring 1403 resets, pushing the movable ratchet 1402 back to its original position, re-engaging and locking with the fixed ratchet 1401, ensuring that the mandrel 9 is stable and reliable during operation. Automatic replacement and switching of the mandrel can be achieved without disassembly, extending the service life of the mechanism. All other undescribed structures are the same as in Example 1.

[0016] The method of use and advantages of this invention: The working process of this automotive clutch tappet mechanism is as follows: like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown: S1: In the initial working state, the clutch main pump 3 supplies hydraulic oil to the clutch slave pump 6 through the hydraulic oil pipe 4. The output shaft of the clutch slave pump 6 extends, driving the rack 11 to move linearly. The rack 11 meshes with the gear 12 to drive the rotating shaft 8 to rotate. The rotating shaft 8 drives the movable ratchet 1402 and the top head 9 to swing synchronously. The top head 9 pushes against the release bearing 10 to realize the clutch disengagement action. S2: When the clutch is engaged, the operator depresses the tower rod. When the tower rod resistance increases, the flow sensor monitors the flow rate of the hydraulic oil and determines the blockage status of the clutch slave pump based on the flow rate. At this time, the controller controls the on / off valve 1301 to switch the oil circuit. The high-pressure pump 1303 outputs hydraulic oil to the clutch slave pump 6 through the branch pipe 1304 and pressurizes it to achieve hydraulic output pressure increase and flow monitoring, ensuring the stability of the thrust of the mandrel 9. S3: When the mandrel 9 is worn or needs to be switched, the double-headed electric cylinder 1406 pushes the movable ratchet 1402 to move axially along the rotating shaft 8, compressing the spring 1403, causing the fixed ratchet 1401 to disengage from the movable ratchet 1402. Then, the drive motor 1408 drives the docking ratchet ring 1407 to rotate through the meshing parts. The docking ratchet ring 1407 engages with the docking ratchet ring 1405, driving the movable ratchet 1402 to rotate around the rotating shaft 8, switching the intact mandrel 9 to the working position. After the switching is completed, the double-headed electric cylinder 1406 resets, and the spring 1403 pushes the movable ratchet 1402 back to its original position, re-engaging and locking with the fixed ratchet 1401 to ensure the stable operation of the mandrel 9.

[0017] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A car clutch tappet mechanism, characterized in that, Includes a clutch pedal (1), a hinge rod (2) is hinged to one side of the bottom of the clutch pedal (1), a clutch master pump (3) is connected to the end of the hinge rod (2) away from the clutch pedal (1), a hydraulic oil pipe (4) is connected to the output end of the clutch master pump (3), and an oil supply mechanism (5) is connected to the top of the clutch master pump (3). The hydraulic oil pipe (4) is connected to a clutch slave pump (6) at one end away from the clutch master pump (3). A mounting bracket (7) is fixedly connected to the side of the clutch slave pump (6). A rotating shaft (8) is rotatably mounted on the mounting bracket (7). A top head (9) is movably engaged on the rotating shaft (8). Multiple top heads (9) are arranged in a ring shape, and the side of the top head (9) located at the top abuts against a release bearing (10). A rack (11) is fixedly connected to the output shaft end of the clutch slave pump (6), and a gear (12) meshes with the top of the rack (11). The gear (12) is fixedly installed at the end of the rotating shaft (8). The mounting frame (7) is respectively provided with a branching mechanism (13) and a head-changing mechanism (14). The branching mechanism (13) includes an on / off valve (1301) located at one end of the hydraulic oil pipe (4) near the clutch slave pump (6). A flow sensor (1302) is installed on the output shaft of the on / off valve (1301). A high-pressure pump (1303) is connected to the output end of the on / off valve (1301). A branch pipeline (1304) is connected to the output end of the high-pressure pump (1303). The end of the branch pipeline (1304) away from the high-pressure pump (1303) is fed into the clutch slave pump (6).

2. The automotive clutch tappet mechanism according to claim 1, characterized in that: The head-changing mechanism (14) includes a fixed ratchet (1401) fixed on the rotating shaft (8) and symmetrical to both sides of the release bearing (10). The fixed ratchet (1401) has a movable ratchet (1402) movably engaged on its side. The movable ratchet (1402) is movably connected to the rotating shaft (8).

3. The automotive clutch tappet mechanism according to claim 1, characterized in that: Several of the top heads (9) are respectively arranged around and fixed on the movable ratchet (1402). The end of the movable ratchet (1402) away from the fixed ratchet (1401) is abutted against a spring (1403). The spring (1403) is movably sleeved on the rotating shaft (8).

4. The automotive clutch tappet mechanism according to claim 3, characterized in that: The spring (1403) abuts against a retaining ring (1404) at one end relative to the movable ratchet (1402), and the retaining ring (1404) is fixedly connected to the rotating shaft (8).

5. The automotive clutch tappet mechanism according to claim 4, characterized in that: A first ratchet ring (1405) is fixedly installed on the outer side wall of the movable ratchet (1402). Two double-headed electric cylinders (1406) are fixedly connected on the mounting bracket (7). The double-headed electric cylinders (1406) are respectively located at the upper and lower parts of the rotating shaft (8). The ends of the output shafts of the double-headed electric cylinders (1406) abut against the side wall of the movable ratchet (1402).

6. The automotive clutch tappet mechanism according to claim 1, characterized in that: The mounting bracket (7) is rotatably provided with a second docking ratchet ring (1407), which is movably engaged with the first docking ratchet ring (1405). A drive motor (1408) is provided at the bottom of the outer side wall of the second docking ratchet ring (1407), and a meshing part is rotatably provided at the output end of the drive motor (1408) for meshing and transmission with the second docking ratchet ring (1407).

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