Clutch master cylinder with elastic structure

Abstract

The utility model provides a clutch master cylinder with an elastic structure, and relates to the technical field of clutches. The master pump comprises a master pump shell, one end of the master pump shell is in threaded connection with an oil outlet port, a return spring is arranged in the master pump shell, the end of the return spring is fixedly connected with a connecting elbow, a clamping mechanism is arranged in the oil outlet port, and the clamping mechanism comprises a driving sliding block which slides in the oil outlet port. Through the arrangement of the driving sliding block, the L-shaped transmission rod, the hinged transmission rod, the inserting sliding rod, the connecting elbow and other components, the driving sliding block can control the inserting sliding rod to limit the connecting elbow through the inserting relation between the inserting sliding rod and the connecting elbow, a worker can conveniently disassemble, overhaul and replace a return spring in the master cylinder shell, and the working efficiency is improved. The normal feedback effect of the clutch master cylinder is prevented from being affected by metal fatigue of the return spring after long-time use, and the use safety of the clutch is improved.

Description

Technical Field

[0001] The utility model relates to a master cylinder, in particular to a clutch master cylinder with an elastic structure, belonging to the technical field of clutches. Background Art

[0002] The clutch master cylinder refers to the part connected to the clutch pedal and connected to the clutch booster through an oil pipe. Its function is to collect the pedal stroke information and make the clutch disengage through the action of the booster, facilitating the driver to operate the vehicle.

[0003] According to the patent with the patent number CN204900596U, a clutch master cylinder with a sound insulation structure is disclosed, which includes a pump body, a return spring, a piston, an oil inlet joint, a dust cover, a push rod, a push rod fork and a retaining ring assembly; the return spring and the piston are arranged in the pump body, one end of the ball head of the push rod is connected to the pump body, and the other end of the push rod is connected to the push rod fork.

[0004] The above solution can eliminate the abnormal noise or noise generated by the clutch system during implementation, improving the comfort of the driver. However, during the implementation of the above solution, it is inconvenient to disassemble the return spring. After long-term use, the return spring will show metal fatigue, affecting the normal use of the clutch. It is necessary to regularly inspect and replace the return spring. Usually, the return spring is fixed inside the master cylinder, making it inconvenient to disassemble; for this reason, we provide a clutch master cylinder with an elastic structure to solve the above problems. Summary of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] The purpose of the present utility model is to provide a clutch master cylinder with an elastic structure to solve the problem that it is difficult to disassemble and replace the return spring inside the clutch master cylinder in the prior art.

[0007] (2) Technical Solutions

[0008] The present utility model is achieved through the following technical solutions: a clutch master cylinder with an elastic structure, including a master cylinder housing, one end of the master cylinder housing is threadedly connected with an oil outlet port, a return spring is arranged inside the master cylinder housing, the end of the return spring is fixedly connected with a connecting elbow, a clamping mechanism is arranged inside the oil outlet port, the clamping mechanism includes a driving slider sliding inside the oil outlet port, two L-shaped transmission rods are fixedly connected to the outer surface of the driving slider, one end of each L-shaped transmission rod is hinged with a hinged transmission rod through a pin shaft, and one end of each hinged transmission rod is hinged with a plugging slide rod through a pin shaft.

[0009] Preferably, two insertion holes are provided on the outer surface of the connecting elbow, and the two insertion slide rods are respectively inserted into the two insertion holes. The insertion slide rods play a role in limiting the connecting elbow.

[0010] Preferably, a slideway is provided inside the oil outlet port, and the insertion slide rod is slidably connected to the slideway. The slideway provides support for the sliding of the insertion slide rod.

[0011] Preferably, a return spring is fixedly connected to one end of the driving slider. The return spring is fixedly connected to the oil outlet port. A shift lever is fixedly connected to the other end of the driving slider. The return spring can push the driving slider to reset.

[0012] Preferably, a piston is slidably connected inside the master cylinder housing, and a connecting push rod is slidably connected to the end of the master cylinder housing. The piston plays a role in pushing the hydraulic oil for transportation.

[0013] Preferably, a push rod fork is fixedly connected to one end of the connecting push rod. The end of the piston is adapted to the return spring. The push rod fork is connected to the clutch pedal.

[0014] Preferably, a transmission connecting rod is fixedly connected to one end of the connecting push rod. The transmission connecting rod is fixedly connected to the piston. The transmission connecting rod plays a role in connecting and transmitting.

[0015] Preferably, two mounting plates are fixedly connected to the outer surface of the master cylinder housing, and an oil inlet pipe is fixedly communicated with the outside of the master cylinder housing. The oil inlet pipe plays a role in transporting the hydraulic oil.

[0016] The utility model provides a clutch master cylinder with an elastic structure, and the beneficial effects thereof are as follows:

[0017] 1. By arranging components such as a driving slider, an L-shaped transmission rod, a hinged transmission rod, an insertion slide rod and a connecting elbow, through the insertion relationship between the insertion slide rod and the connecting elbow, the driving slider can control the insertion slide rod to limit the connecting elbow, which is convenient for the staff to disassemble, repair and replace the return spring inside the master cylinder housing, and avoids the metal fatigue of the return spring during long-term use, which affects the normal feedback effect of the clutch master cylinder, and improves the use safety of the clutch.

[0018] 2. Through the setting of the return spring, the utility model can push the piston to reset, improve the feedback accuracy of the clutch master cylinder, enable the piston to smoothly contact the return spring during movement, and avoid the return spring from tilting when the piston presses it. Through the setting of the connecting push rod and the push rod fork, when the driver steps on the clutch, the clutch plate pushes the push rod fork to move, and the push rod fork drives the connecting push rod to slide inside the master cylinder housing, thereby pushing the hydraulic oil inside the master cylinder housing to the clutch slave cylinder through the oil outlet port, so that the clutch can transmit signals according to the degree of depression by the driver to achieve efficient control of the vehicle. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0020] Figure 2 It is a partial cross-sectional view of the master cylinder housing of the present utility model;

[0021] Figure 3 It is a partial cross-sectional view of the oil outlet port of the present utility model;

[0022] Figure 4 It is a schematic diagram of the structure of the clamping mechanism of the present utility model;

[0023] Figure 5 It is a partial schematic diagram of the structure of the clamping mechanism of the present utility model.

[0024]

Description of the Main Component Symbols

[0025] 1. Master cylinder housing; 2. Oil outlet port;

[0026] 3. Clamping mechanism; 301. Driving slider; 302. L-shaped transmission rod; 303. Hinged transmission rod; 304. Insertion slide rod; 305. Slideway; 306. Return spring; 307. Pushing rod;

[0027] 4. Return spring; 5. Connecting elbow; 6. Piston; 7. Connecting push rod; 8. Push rod fork; 9. Transmission connecting rod; 10. Mounting plate; 11. Inlet pipe. Detailed Embodiment

[0028] The embodiment of the present utility model provides a clutch master cylinder with an elastic structure.

[0029] Please refer to Figure 1 and Figure 2, including a master cylinder housing 1, two mounting plates 10 are fixedly connected to the outer surface of the master cylinder housing 1, an oil inlet pipe 11 is fixedly communicated with the outside of the master cylinder housing 1. The oil inlet pipe 11 is a prior art and will not be elaborated too much in this application. The oil inlet pipe 11 is externally connected to an oil kettle to provide sufficient hydraulic oil for the inside of the master cylinder housing 1. The mounting plates 10 facilitate the fixed installation of the device and improve the stability of the device during use.

[0030] A connecting push rod 7 is slidably connected to the end of the master cylinder housing 1. One end of the connecting push rod 7 is fixedly connected to a push rod fork 8. When the driver steps on the clutch, the clutch plate pushes the push rod fork 8 to move. The push rod fork 8 drives the connecting push rod 7 to slide inside the master cylinder housing 1, so as to push the hydraulic oil inside the master cylinder housing 1 to the clutch slave cylinder through the oil outlet port 2, so that the clutch can transmit signals according to the degree stepped on by the driver to achieve efficient control of the vehicle.

[0031] Please refer to Figure 2 and Figure 3 , a return spring 4 is arranged inside the master cylinder housing 1. One end of the return spring 4 is fixedly connected to a connecting elbow 5. The return spring 4 is a prior art and will not be elaborated too much in this application. Through the arrangement of the return spring 4, the piston 6 can be pushed to reset inside the master cylinder housing 1. There is no specific fixing method between the return spring 4 and the piston 6. When the piston 6 slides under force, the return spring 4 will be compressed. When the piston 6 is not under force, the return spring 4 will push the piston 6 to reset. Through the arrangement of the connecting elbow 5, it is convenient to fix the return spring 4 to the oil outlet port 2.

[0032] Two insertion holes are formed on the outer surface of the connecting elbow 5. Two insertion sliding rods 304 are respectively inserted into the two insertion holes. When the insertion sliding rods 304 are inserted into the insertion holes, the insertion sliding rods 304 can limit the connecting elbow 5 to keep the connecting elbow 5 in a stable connection state with the oil outlet port 2. When the insertion sliding rods 304 are removed from the insertion holes, the connecting elbow 5 can be detached from the oil outlet port 2, which is convenient for the maintenance and replacement of the return spring 4.

[0033] Please refer to Figure 2 , a piston 6 is slidably connected inside the master cylinder housing 1. The end of the piston 6 is adapted to the return spring 4. The end of the piston 6 has a certain protrusion, and the diameter of the protrusion is slightly smaller than the inner diameter of the return spring 4. This structure facilitates the piston 6 to contact the return spring 4 smoothly during movement, avoiding the return spring 4 from tilting when the piston 6 compresses the return spring 4.

[0034] One end of the connecting push rod 7 is fixedly connected to a transmission connecting rod 9, and the transmission connecting rod 9 is fixedly connected to the piston 6. When the push rod fork 8 is forced to push the connecting push rod 7 to move, when the connecting push rod 7 slides inside the master cylinder housing 1, it can drive the piston 6 to move through the transmission connecting rod 9, so as to push the hydraulic oil inside the master cylinder housing 1 to the clutch slave cylinder through the oil outlet port 2. Both the piston 6 and the inner wall of the master cylinder housing 1 have good sealing performance.

[0035] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , one end of the master cylinder housing 1 is threadedly connected to an oil outlet port 2. The oil outlet port 2 is externally connected to an oil outlet pipe, and the oil outlet pipe is connected to the clutch slave cylinder and the booster. A sealing ring is installed at the threaded connection between the oil outlet port 2 and the master cylinder housing 1 to ensure good tightness of the connection between the master cylinder housing 1 and the oil outlet port 2, preventing the hydraulic oil from flowing out through the gap between the master cylinder housing 1 and the oil outlet port 2. The staff can rotate and remove the oil outlet port 2 from the master cylinder housing 1 to facilitate subsequent maintenance and replacement of the return spring 4. The connection between the oil outlet port 2 and the master cylinder housing 1 is stable enough.

[0036] Please refer to Figure 3 and Figure 4 , a clamping mechanism 3 is arranged inside the oil outlet port 2. The clamping mechanism 3 includes a driving slider 301 sliding inside the oil outlet port 2. The other end of the driving slider 301 is fixedly connected to a lever 307. The lever 307 has a certain depression, which is convenient for the staff to drag the lever 307. When the lever 307 is dragged, the lever 307 drives the driving slider 301 to slide out of the oil outlet port 2, so as to provide power for subsequent disconnection of the plugging rod 304 from the connecting elbow 5.

[0037] Please refer to Figure 3 , Figure 4 and Figure 5 , two L-shaped transmission rods 302 are fixedly connected to the outer surface of the driving slider 301. The end of each L-shaped transmission rod 302 is hinged to a hinged transmission rod 303 through a pin shaft. One end of each hinged transmission rod 303 is hinged to a plugging rod 304 through a pin shaft. When the driving slider 301 slides, it can drive the L-shaped transmission rod 302 to move. The movement of the L-shaped transmission rod 302 will drive the hinged transmission rod 303 to move. The hinged transmission rod 303 can drive the plugging rod 304 to slide inside the slideway 305, so as to cancel the state of the plugging rod 304 being inserted into the insertion hole on the surface of the connecting elbow 5, which is convenient for the staff to remove the return spring 4 from the oil outlet port 2 for replacement. The L-shaped transmission rod 302, the hinged transmission rod 303 and the plugging rod 304 are all slidably connected to the cavity opened inside the oil outlet port 2.

[0038] The interior of the oil outlet port 2 is provided with a slideway 305, and the plugging slide rod 304 is slidably connected to the slideway 305. Through the setting of the slideway 305, space is provided for the sliding of the plugging slide rod 304. The position where the slideway 305 intersects with the cavity has a certain angle, which facilitates the rotation of the articulated transmission rod 303 as the L-shaped transmission rod 302 slides.

[0039] One end of the driving slider 301 is fixedly connected with a return spring 306, and the return spring 306 is fixedly connected with the oil outlet port 2. When the lever 307 is pulled, the return spring 306 will elongate following the sliding of the driving slider 301. When the lever 307 is not subject to external force, the return spring 306 will rebound under the action of the elastic force of deformation, thereby driving the driving slider 301 to reset, so that the plugging slide rod 304 maintains a stable plugging state with the connecting elbow 5. The elastic coefficient of the return spring 306 is sufficient to keep the plugging slide rod 304 stable during plugging. Since the vibration generated by the spring itself is within the acceptable range of this device.

[0040] Working principle: When the staff wants to remove and replace the return spring 4, first use tools such as a wrench to rotate the oil outlet port 2 and screw the oil outlet port 2 off the master cylinder housing 1. Then pull the lever 307. The lever 307 drives the driving slider 301 to slide when it is stressed. The sliding of the driving slider 301 drives the L-shaped transmission rod 302 to move. Under the transmission action of the articulated transmission rod 303, the plugging slide rod 304 will be stressed and slide into the interior of the slideway 305, so as to disengage from the plugging hole opened on the surface of the connecting elbow 5. At this time, the return spring 4 can be removed from the oil outlet port 2 for replacement. After the replacement is completed, releasing the lever 307 can make the plugging slide rod 304 plug into the plugging hole on the surface of the connecting elbow 5 again, thereby fixing the return spring 4 to the oil outlet port 2, effectively reducing the working intensity of the staff for disassembling and replacing the return spring 4.

[0041] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A master cylinder of a clutch with an elastic structure, comprising a master cylinder housing (1), characterized in that: One end of the master cylinder housing (1) is threadedly connected to an oil outlet port (2). A return spring (4) is arranged inside the master cylinder housing (1). The end of the return spring (4) is fixedly connected to a connecting elbow (5). A clamping mechanism (3) is arranged inside the oil outlet port (2). The clamping mechanism (3) includes a driving slider (301) sliding inside the oil outlet port (2). Two L-shaped transmission rods (302) are fixedly connected to the outer surface of the driving slider (301). One end of each L-shaped transmission rod (302) is hinged to a hinged transmission rod (303) through a pin shaft. One end of each hinged transmission rod (303) is hinged to a plugging slide rod (304) through a pin shaft.

2. The master cylinder of a clutch with an elastic structure according to claim 1, characterized in that: Two plugging holes are formed in the outer surface of the connecting elbow (5). The two plugging slide rods (304) are respectively plugged into the two plugging holes.

3. The master cylinder of a clutch with an elastic structure according to claim 1, characterized in that: A slideway (305) is formed inside the oil outlet port (2). The plugging slide rod (304) is slidably connected to the slideway (305).

4. The master cylinder of a clutch with an elastic structure according to claim 1, characterized in that: One end of the driving slider (301) is fixedly connected to a return spring (306). The return spring (306) is fixedly connected to the oil outlet port (2). The other end of the driving slider (301) is fixedly connected to a lever (307).

5. A master cylinder of a clutch with an elastic structure according to claim 1, characterized in that: A piston (6) is slidably connected inside the master cylinder housing (1). A connecting push rod (7) is slidably connected to the end of the master cylinder housing (1).

6. The master cylinder of a clutch with an elastic structure according to claim 5, characterized in that: One end of the connecting push rod (7) is fixedly connected to a push rod fork (8). The end of the piston (6) is adapted to the return spring (4).

7. The master cylinder of a clutch with an elastic structure according to claim 6, characterized in that: One end of the connecting push rod (7) is fixedly connected to a transmission connecting rod (9). The transmission connecting rod (9) is fixedly connected to the piston (6).

8. A master cylinder of a clutch with an elastic structure according to claim 1, characterized in that: Two mounting plates (10) are fixedly connected to the outer surface of the master cylinder housing (1). An oil inlet pipe (11) is fixedly communicated with the outside of the master cylinder housing (1).

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