A clutch booster with long service life

Abstract

The present invention proposes a clutch booster with a long service life, which mainly includes a main cylinder body, a mounting plate body, a cylinder and a sub-cylinder body. A movable piston 1 is arranged in the main cylinder body, which is sealed with the inner wall, and its left end is connected with the piston 3 in the cylinder through the shaft rod 2. A mounting tube is arranged on the left side of the mounting plate body, and a sealing assembly is arranged inside the piston 3 which is sealed with the shaft rod 2. An oil passage is arranged inside the mounting plate body, which is connected with the specific space of the main cylinder body, and is connected with the oil inlet pipeline of the sub-cylinder body through the oil supply port. A sub-cylinder body is arranged at the left end of the cylinder, and the shaft rod 1 in the sub-cylinder body is sealed with the inner wall. The oil pressure, gas pressure and shaft rod thrust jointly drive the piston 1 to move to the right, and the piston 1 can drive the piston 2, and the direct drive of the piston 2 by the oil pressure is equivalent to four forces driving the piston 2. These forces enable the piston in the main cylinder body to obtain a sufficiently large driving force, which is easier to be pushed, can respond quickly and move efficiently, thereby improving the service life of the clutch booster.

Description

Technical Field

[0001] The invention relates to the technical field of automobile clutch boosters, and in particular to a clutch booster with a long service life. Background Art

[0002] The car clutch booster is an auxiliary device used to help the driver operate the clutch pedal more easily. It uses hydraulic or pneumatic pressure to amplify the force applied by the driver on the pedal, so that the clutch separation and engagement can be completed smoothly.

[0003] Without a clutch booster, the driver needs to use a lot of leg strength to step on the clutch pedal, especially when changing gears frequently or driving a large vehicle (such as a truck), which can easily cause leg fatigue. The clutch booster can amplify the pedal force, making it easier for the driver to step on the pedal.

[0004] Hydraulic clutch booster, basic principle: when the driver steps on the clutch pedal, the pedal force pushes the master cylinder piston, and the hydraulic oil in the master cylinder is pressed to the working cylinder of the booster through the pipeline. The piston in the working cylinder moves under the pressure of the hydraulic oil, and drives the clutch release bearing through the push rod and other transmission parts to disengage the clutch.

[0005] Pneumatic clutch booster, basic principle: Pneumatic clutch booster mainly uses the vehicle's air pressure system (usually provided by an air compressor driven by the engine). When the driver steps on the clutch pedal, the pedal mechanism controls an air valve to allow compressed air to enter the air chamber of the booster. The air pressure acts on the piston, pushing the piston to move, thereby driving the clutch release mechanism to work.

[0006] In the clutch booster, the working performance of the piston does have a crucial impact on its service life. The following is a detailed explanation of the two aspects of how the piston is driven by the internal pressure of the cylinder and how the piston is driven by the external force of the cylinder.

[0007] The pressure inside the cylinder mainly comes from oil pressure and air pressure. The greater the force applied to the piston, the easier it is to push the piston to move. This is because greater pressure can provide a stronger driving force, allowing the piston to respond quickly and move efficiently. This efficient piston action can not only improve the driver's operating experience, but more importantly, it can reduce the wear and fatigue of the piston during operation, thereby extending the service life of the clutch booster. Because when the piston can respond to the pedal action quickly and accurately, the separation and engagement process of the clutch will be smoother, reducing the impact and friction caused by slow or unsmooth movements.

[0008] The piston is pushed to move by the ball shaft outside the cylinder. However, since the ball shaft is not coaxial with the piston, the piston will be subjected to forces in various directions. This non-coaxial force situation will cause a series of problems in the movement of the piston, thus affecting the service life of the clutch booster.

[0009] First, forces in different directions will cause uneven pressure distribution on the inner wall of the cylinder. Under normal circumstances, the piston should move smoothly along the axis of the cylinder. But when subjected to non-coaxial forces, the piston will deviate to one side and produce greater friction with a certain part of the inner wall of the cylinder. This increase in friction will not only lead to increased wear of the piston and cylinder, but also consume more energy and reduce the working efficiency of the booster.

[0010] Secondly, the non-coaxial force will also cause vibration and unstable movement of the piston. When the direction of the force applied by the ball shaft changes continuously, the piston will rock back and forth in the cylinder and it will be difficult to maintain a stable state of movement. This unstable movement will not only affect the operating performance of the clutch, but also cause additional impact and stress to other parts of the booster, accelerating the damage of the parts.

[0011] In addition, the piston may be deformed if subjected to non-coaxial forces for a long time. Because the internal stress of the piston is unevenly distributed under the action of forces in different directions, it is easy to cause local deformation. Once the piston is deformed, it will further increase the friction with the inner wall of the cylinder, and may even cause damage to the seal, causing leakage in the hydraulic or pneumatic system, seriously affecting the normal operation of the clutch booster.

[0012] In summary, in order to increase the service life of the clutch booster, it is necessary to optimize the drive of the piston by the internal pressure of the cylinder to ensure that sufficient force is provided to achieve rapid and efficient movement of the piston; at the same time, it is also necessary to minimize the impact of the non-coaxial force outside the cylinder on the piston, so that the piston can move more smoothly in the cylinder. Summary of the invention

[0013] In view of the problems pointed out in the background technology, the present invention proposes a clutch booster with a long service life to solve the above technical problems.

[0014] The technical solution of the present invention is achieved in this way:

[0015] A clutch booster with a long service life comprises a tubular main cylinder body, wherein a mounting plate body is provided at the left end of the main cylinder body;

[0016] The left side of the mounting plate is connected to a cylinder, the left end of the cylinder is provided with an air inlet 2 connected to the inside thereof, and the right end of the cylinder is provided with an air outlet; a piston 3 movable left and right is provided in the cylinder, and a shaft 2 is connected to the piston 3;

[0017] A piston 1 which can move left and right is arranged in the main cylinder body, the piston 1 is sealed with the inner wall of the main cylinder body, and the right end of the shaft rod 2 is connected with the left end of the piston 1;

[0018] A mounting tube coaxially connected to the main cylinder body is provided on the left side of the mounting plate body, an annular sealing assembly is fixedly provided in the mounting tube, the sealing assembly forms a sliding sealing match with the second shaft rod, and the sealing assembly forms a sealing match with the inner wall of the mounting tube;

[0019] An oil passage is provided inside the mounting plate, and one end of the oil passage is connected to the space between the sealing assembly and the piston 1 in the main cylinder body;

[0020] The left end of the cylinder is provided with a tubular auxiliary cylinder body, the auxiliary cylinder body is connected with the cylinder, and a shaft rod 1 which can move left and right is provided in the auxiliary cylinder body, and the shaft rod 1 is sealed with the inner wall of the auxiliary cylinder body;

[0021] The left end of the auxiliary cylinder body forms an oil inlet;

[0022] The mounting plate body is provided with an oil supply port which is connected with the other end of the oil passage, and the oil supply port and the oil inlet are connected with each other through a pipeline.

[0023] By adopting the above technical solution: Piston 1 in the main cylinder body is driven by three forces, which are: (1) the gas pressure in the cylinder drives piston 1 to move rightward through piston 3 and shaft 2; (2) oil enters the oil inlet on the auxiliary cylinder body to form oil pressure, the oil pressure pushes shaft 1, shaft 1 pushes piston 3, and piston 3 drives piston 1 to move rightward through shaft 2; (3) oil enters the oil inlet on the auxiliary cylinder body to form oil pressure, the oil pressure enters the right side of piston 1 through the oil passage, and drives piston 1 to move rightward.

[0024] The present invention is further configured that a piston 2 which can move left and right is provided in the main cylinder body, the piston 2 is sealed with the inner wall of the main cylinder body, the piston 2 is located on the right side of the piston 1, and a spring 4 is provided between the piston 2 and the piston 1;

[0025] The left end of the piston 1 is provided with a connecting hole 1, the right end of the piston 1 is provided with a connecting hole 2, and the middle of the piston 1 is provided with a connecting hole 3 connecting the connecting hole 1 and the connecting hole 2, and the diameter of the connecting hole 3 is smaller than the diameters of the connecting hole 1 and the connecting hole 2; the left end of the piston 1 is provided with a slot that runs through both sides and the left side thereof along its radial direction, and the slot runs through the left ends of the connecting hole 1 and the connecting hole 3, and the right end of the shaft rod 2 is connected to the connecting hole 1;

[0026] A sealing seat and a spring seven are provided in the connection hole three. The diameter of the sealing seat is smaller than the diameter of the connection hole two. The spring seven is located on the right side of the sealing seat. The spring seven applies elastic force to the sealing seat so that the sealing seat is in a state of blocking the connection hole three.

[0027] The left end of the sealing seat is provided with a push rod, the push rod extends into the connecting hole three, and the diameter of the push rod is smaller than the diameter of the connecting hole three;

[0028] A U-shaped top opening piece is connected to the groove, the opening of the top opening piece is arranged to the left, and the left end of the top rod abuts against the middle part of the top opening; when the sealing seat is in a state of blocking the connecting hole three, the top rod pushes the top opening piece and makes the left end of the top opening piece protrude from the left end surface of the piston one.

[0029] By adopting the above technical solution: piston 2 is added to the right side of piston 1 in the main cylinder body, and spring 4 between piston 2 and piston 1 can transmit driving force; the oil pressure on the left side of piston 1 can be transmitted to piston 2 through the connecting hole in the center of piston 1 to drive piston 2 to move right; which is equivalent to driving piston 2 to move right through oil pressure and piston 1.

[0030] The present invention is further configured such that a gas valve body is provided on the mounting plate body, the gas valve body having a valve cavity, the left end of the valve cavity is connected to the oil passage, and the right end of the valve cavity is arranged through the outer wall of the gas valve body;

[0031] The valve cavity is composed of a first sealing section, a second sealing section, an air outlet section, and an air inlet section from left to right. An annular sealing ring is provided on the inner wall of the valve cavity. The sealing ring is located between the air outlet section and the air inlet section. The diameter of the second sealing section is greater than that of the first sealing section.

[0032] A movable valve core and a fixed seat are arranged in sequence from left to right in the air intake section. The movable valve core can move left and right. The fixed seat is sealed with the inner wall of the air intake section. A spring 1 is arranged between the movable valve core and the fixed seat. Under the elastic force of the spring 1, the movable valve core and the sealing ring are kept in a sealed state.

[0033] A shaft rod 3 that can move left and right is provided in the first sealing section, the second sealing section, and the air outlet section. The left end of the shaft rod 3 is sealed with the inner wall of the first sealing section, and the middle part of the shaft rod 3 is sealed with the inner wall of the second sealing section. The right end of the shaft rod 3 can pass through the sealing ring and abut against the left end of the movable valve core. A spring 2 is provided in the air outlet section, and the two ends of the spring 2 are respectively abutted against the sealing ring and the shaft rod 3;

[0034] The air valve body is provided with an air inlet 1 connected to the air inlet section, and the air valve body is provided with an air outlet 1 connected to the air outlet section, and the air outlet 1 and the air inlet 2 are connected through a pipeline;

[0035] An air passage 1 connecting the right end of the air cylinder and the second sealing section is arranged inside the mounting plate body and the air valve body, an air passage 2 penetrating the right end of the shaft rod 3 is arranged inside the shaft rod 3, and an air hole connecting the air passage 2 and the second sealing section is arranged on the shaft rod 3.

[0036] By adopting the above technical solution: the operation of the cylinder is controlled by the air valve, when oil enters the left end of the auxiliary cylinder body, oil pressure is formed, the air valve opens, and air is supplied to the cylinder, and the cylinder starts to work, thus achieving synchronous operation of hydraulic pressure and oil pressure.

[0037] The present invention is further configured as follows: a push block that can move left and right is provided in the main cylinder body, the push block is located on the right side of the piston 2, the push block is provided with a connecting hole that runs through the left and right sides thereof, a spring 5 is provided between the push block and the piston 2, a top column extending to the right is provided at the right end of the piston 2, a connecting groove 1 corresponding to the top column is provided at the left end of the push block, and a connecting groove 2 is provided at the right end of the push block.

[0038] By adopting the above technical solution: the external ball head shaft pushes the piston in the main cylinder body through the push block, and the coaxial force on the piston is achieved through the push block, thus solving the problem caused by non-coaxial force.

[0039] The present invention is further configured such that the left end of the shaft rod one is sleeved with a spring six, and the spring six can apply a rightward elastic force to the shaft rod one.

[0040] The present invention is further configured such that the left end of the piston 1 is sleeved with a spring 8, and the spring 8 constrains the push-opening member in the slot.

[0041] The present invention is further configured such that a retaining ring is provided at the right end of the valve cavity to limit the rightward movement of the fixed seat.

[0042] The present invention is further configured such that a retaining ring is provided in the installation tube to limit the sealing assembly from moving leftward.

[0043] The present invention is further configured such that a spring three is provided inside the cylinder, and the spring is located on the right side of the piston three.

[0044] The present invention is further configured such that the left and right ends of the shaft rod 1 are respectively provided with sealing rings that seal with the inner wall of the auxiliary cylinder body, and the side wall of the auxiliary cylinder body is provided with an exhaust hole 1, which is located between the left and right ends of the shaft rod 1; the right end of the main cylinder body is provided with an exhaust hole 2 that is connected with its interior.

[0045] By adopting the above technical solution: the seal between shaft rod 1 and the cylinder may leak, and exhaust hole 1 is used to discharge the gas leaking from the cylinder to shaft rod 1; the movement of the piston in the main cylinder body may form gas pressure at the right end of the main cylinder body that cannot be discharged in time, and exhaust hole 2 can provide an additional exhaust path.

[0046] By adopting the above technical solution, the beneficial effects of the present invention are as follows:

[0047] Oil pressure, air pressure, and shaft thrust drive piston 1 to move right; piston 1 drives piston 2 to move right, and oil pressure drives piston 2 to move right, which is equivalent to four forces driving piston 2 to move right. This enables the piston in the master cylinder to obtain a sufficiently large driving force, making it easier to push the piston in the master cylinder, allowing the piston in the master cylinder to respond quickly and move efficiently, thereby increasing the service life of the clutch booster.

[0048] The ball head shaft outside the cylinder pushes the piston in the master cylinder body through the push block. With the help of the push block, the piston can be coaxially forceful so that the piston will not be subjected to forces in various directions, thereby increasing the service life of the clutch booster. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0050] Figure 1 It is a schematic structural diagram of the clutch booster of the present invention.

[0051] Figure 2 It is a schematic diagram of the internal structure of the clutch booster of the present invention.

[0052] Figure 3 It is a schematic diagram of the structure of the sealing assembly and piston 1 of the present invention.

[0053] Figure 4 It is a schematic structural diagram of the sealing assembly and piston 1 of the present invention.

[0054] Figure 5 It is a cross-sectional view of the sealing assembly and piston 1 of the present invention.

[0055] Figure 6 It is a schematic diagram of the exploded view of the sealing assembly and piston 1 of the present invention.

[0056] Figure 7 It is an exploded schematic diagram of the piston 1, the sealing seat and the top opening part of the present invention.

[0057] Figure 8 The cross-sectional view of the piston 1, the sealing seat and the top opening of the present invention is shown in FIG. Figure 1 .

[0058] Fig. 9 The cross-sectional view of the piston 1, the sealing seat and the top opening of the present invention is shown in FIG. Figure 2 .

[0059] Fig.10It is a schematic diagram of the structure inside the gas valve body of the present invention.

[0060] Fig.11 It is a structural schematic diagram of the movable valve core, the fixed seat and the shaft rod of the present invention.

[0061] Fig.12 It is a cross-sectional view of the movable valve core, the fixed seat and the shaft rod of the present invention.

[0062] Fig.13 It is an exploded schematic diagram of the movable valve core, the fixed seat and the shaft rod of the present invention.

[0063] Fig.14 The structure of the valve cavity of the present invention is schematically shown in FIG. Figure 1 .

[0064] Fig.15 The structure of the valve cavity of the present invention is schematically shown in FIG. Figure 2 .

[0065] Fig.16 It is a schematic diagram of the structure of the shaft rod 1 in the auxiliary cylinder body of the present invention.

[0066] Fig.17 It is a structural schematic diagram of the piston 2 and the push block in the main cylinder of the present invention.

[0067] Fig.18 It is a cross-sectional view of the piston 2 and the push block of the present invention.

[0068] Fig.19 It is an exploded schematic diagram of the piston 2 and the push block of the present invention. DETAILED DESCRIPTION

[0069] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0070] For reference Figure 1-Figure 19 The present invention is described:

[0071] Embodiment: A clutch booster with a long service life comprises a tubular main cylinder body 1, both ends of the main cylinder body 1 in the length direction are open (left and right ends are open), and a mounting plate body 2 is provided at the left end of the main cylinder body 1.

[0072] The left side of the mounting plate 2 is connected to a cylinder 3, which is open on the right side. The right end of the cylinder 3 is fixedly connected to the mounting plate 2. The left end of the cylinder 3 is provided with an air inlet 2 4 connected to the inside thereof, and the right end of the cylinder 3 is provided with an air outlet 5. A piston 3 6 that can move left and right is provided in the cylinder 3, and a shaft 2 7 is connected to the piston 3 6. The gas enters the cylinder 3 from the air inlet 2 4, pushing the piston 3 6 to move rightward, and at the same time, the air outlet 5 discharges the gas in the cylinder 3.

[0073] A piston 8 which can move left and right is provided in the main cylinder body 1. The piston 8 is sealed with the inner wall of the main cylinder body 1. The right end of the shaft rod 27 is connected to the left end of the piston 8. The movement of the shaft rod 27 can drive the piston 8 to move, which is equivalent to the shaft rod 27 applying a driving force to the piston 8 to move rightward.

[0074] The left side of the mounting plate 2 is provided with a mounting tube 9 which is coaxially connected with the main cylinder body 1. The mounting tube 9 is located inside the cylinder 3. An annular sealing assembly 10 is fixed inside the mounting tube 9. The right end of the sealing assembly 10 abuts against the main cylinder body 1. A retaining ring 49 is provided inside the mounting tube 9 to limit the leftward movement of the sealing assembly 10. The shaft rod 2 7 passes through the sealing assembly 10. The sealing assembly 10 forms a sliding seal with the shaft rod 2 7. The sealing assembly 10 forms a seal with the inner wall of the mounting tube 9. The role of the sealing assembly 10 is crucial. It ensures the sealing between the cylinder 3 and the main cylinder body 1, prevents gas or hydraulic oil leakage, and ensures the stability of the working pressure of the entire system, thereby improving the working stability and reliability of the piston 1 8.

[0075] An oil passage 11 is provided inside the mounting plate body 2 , and one end of the oil passage 11 is communicated with the space between the sealing assembly 10 and the piston 8 in the main cylinder body 1 .

[0076] A tubular sub-cylinder body 12 is provided at the left end of the cylinder 3. The sub-cylinder body 12, the cylinder 3 and the main cylinder body 1 are coaxially arranged. The left end of the sub-cylinder body 12 is closed, and the right end of the sub-cylinder body 12 is connected to the cylinder 3. A shaft rod 13 that can move left and right is provided in the sub-cylinder body 12, and the shaft rod 13 is sealed with the inner wall of the sub-cylinder body 12.

[0077] An oil inlet 14 is formed at the left end of the auxiliary cylinder body 12, and the hydraulic oil enters the auxiliary cylinder body 12 through the oil inlet 14, pushing the shaft rod 13 to move rightward, and the shaft rod 13 pushes the piston three 6 and the shaft rod two 7 to move rightward, and then pushes the piston one 8 to move rightward.

[0078] The mounting plate 2 is provided with an oil supply port 15 connected to the other end of the oil passage 11, and the oil supply port 15 is connected to the oil inlet 14 through a pipeline. The hydraulic oil enters the oil inlet 14 and enters the oil supply port 15 through the pipeline, enters the oil passage 11, and enters the space between the sealing assembly 10 and the piston 8, so that the oil pressure pushes the piston 8 to move to the right.

[0079] The clutch booster mainly includes main components such as a tubular main cylinder body 1, a mounting plate body 2, a cylinder 3, and a sub-cylinder body 12. The main cylinder body 1 is opened at both ends in the length direction, and a mounting plate body 2 is provided at the left end. The mounting plate body 2 plays a key role in connecting and supporting various components. The cylinder 3 is open on the right side and the right end is fixedly connected to the mounting plate body 2. An air inlet 4 is provided at the left end, and an air outlet 5 is provided at the right end (the air outlet 5 is provided on the mounting plate body 2). A piston 8 that can move left and right is provided in the main cylinder body 1, which is sealed with the inner wall of the main cylinder body 1 to ensure the sealing during operation. The sub-cylinder body 12, the cylinder 3, and the main cylinder body 1 are coaxially arranged. The left end of the sub-cylinder body 12 is closed, and the right end is connected to the cylinder 3. A shaft rod 13 that can move left and right is provided inside, which is also sealed with the inner wall of the sub-cylinder body 12.

[0080] The cylinder 3 is open on the right side, and is provided with a piston 3 6 that can move left and right inside, and a shaft 2 7 is connected to the piston 3 6. When gas enters the cylinder 3 from the air inlet 2 4, the strong air pressure will push the piston 3 6 to move to the right, and at the same time, the air outlet 5 will discharge the original gas in the cylinder 3 to maintain the air pressure balance. The right end of the shaft 2 7 is connected to the left end of the piston 1 8 in the main cylinder body 1. Therefore, the movement of the piston 3 6 will drive the piston 1 8 to move through the shaft 2 7, which is equivalent to the shaft 2 7 applying a driving force to the piston 1 8 to move to the right. This air pressure drive method has the characteristics of rapid response and can provide a large initial driving force for the piston 1 8 in a short time.

[0081] The left end of the auxiliary cylinder body 12 forms an oil inlet 14. When the hydraulic oil enters the auxiliary cylinder body 12 through the oil inlet 14, a strong oil pressure will be generated. This oil pressure will push the shaft 13 to move to the right, and the shaft 13 will then push the piston 3 6 and the shaft 2 7 to move to the right, and finally push the piston 18 to move to the right. This is the first way that the oil pressure drives the piston 18. At the same time, the mounting plate body 2 is provided with an oil supply port 15, and the oil supply port 15 and the oil inlet 14 are connected by a pipeline. When the hydraulic oil enters the oil inlet 14, it will also enter the oil supply port 15 through the pipeline, and then enter the oil channel 11 inside the mounting plate body 2, and finally enter the space between the sealing assembly 10 and the piston 18. At this time, the oil pressure will directly act on the right side of the piston 18, driving the piston 18 to move to the right. This is the second way that the oil pressure drives the piston 18.

[0082] Through the above structural design, the piston 8 in the main cylinder body 1 is driven by three forces. First, the gas pressure in the cylinder 3 drives the piston 8 to move to the right through the piston 3 6 and the shaft 2 7; second, the oil enters the oil inlet 14 on the auxiliary cylinder body 12 to form oil pressure, which pushes the shaft 13, and the shaft 13 pushes the piston 3 6, and the piston 3 6 then drives the piston 8 to move to the right through the shaft 2 7; third, the oil enters the oil inlet 14 on the auxiliary cylinder body 12 to form oil pressure, which enters the right side of the piston 8 through the oil passage 11 and directly drives the piston 8 to move to the right. This multi-force driving method enables the piston 8 in the main cylinder body 1 to obtain a sufficiently large driving force, making it easier to be pushed. The strong driving force enables the piston 8 to respond quickly to the driver's operation and efficiently complete the separation and combination of the clutch. In this way, not only the driving comfort and the convenience of operation are improved, but also the wear and fatigue of the piston 8 during the working process are reduced, thereby greatly improving the service life of the clutch booster.

[0083] In summary, this clutch booster with a long service life realizes the function of multi-force drive piston 8 through a unique structural design, providing the driver with a more reliable and efficient clutch operation experience, while also extending the service life of the clutch booster.

[0084] A piston 2 16 which can move left and right is provided in the main cylinder body 1. The piston 2 16 is sealed with the inner wall of the main cylinder body 1. The piston 2 16 is located on the right side of the piston 1 8. A spring 4 17 is provided between the piston 2 16 and the piston 1 8. The piston 2 16 and the piston 1 8 can transmit force through the spring 4 17. For example, the piston 1 8 can push the piston 2 16 to move right through the spring 4 17. This design adds a way to transmit force, so that the piston 2 16 can move more stably under the action of various forces.

[0085] The left end of the piston 1 8 is provided with a connecting hole 18, the right end of the piston 1 8 is provided with a connecting hole 2 19, and the middle of the piston 1 8 is provided with a connecting hole 3 20 connecting the connecting hole 18 and the connecting hole 2 19. The diameter of the connecting hole 3 20 is smaller than the diameter of the connecting hole 18 and the connecting hole 2 19.

[0086] The left end of the piston 8 is provided with a groove 21 running through both sides and the left side thereof in a radial direction. The groove 21 runs through the left end of the connecting hole 18 and the connecting hole 3 20, providing a channel for the flow of hydraulic oil and the transmission of force.

[0087] The right end of the shaft rod 2 7 is connected to the connecting hole 18, and also includes a pin hole that passes through the shaft rod 2 7 and the piston 1 8, and a pin is connected in the pin hole.

[0088] A sealing seat 22 and a spring 23 are provided in the connecting hole three 20. The diameter of the sealing seat 22 is smaller than the diameter of the connecting hole two 19. The spring 23 is located on the right side of the sealing seat 22. The spring 23 applies elastic force to the sealing seat 22 so that the sealing seat 22 is in a state of blocking the connecting hole three 20. A retaining ring is connected to the connecting hole three 20. The retaining ring is located on the right side of the spring 23. The left end of the spring 23 is against the sealing seat 22, and the right end of the spring 23 is against the retaining ring.

[0089] A push rod 24 is provided at the left end of the sealing seat 22 . The push rod 24 extends into the connecting hole 3 20 . The diameter of the push rod 24 is smaller than the diameter of the connecting hole 3 20 .

[0090] A U-shaped push-opening member 25 is connected to the slot 21, and the opening of the push-opening member 25 is arranged to face leftward, and the left end of the push rod 24 abuts against the middle of the push-opening. When the sealing seat 22 is in a state of blocking the connection hole 3 20, the push rod 24 pushes the push-opening member 25 to move leftward and makes the left end of the push-opening member 25 protrude from the left end surface of the piston 1 8.

[0091] When the hydraulic oil enters the right side of piston 1 8, it will enter connecting hole 3 20 through slot 21. At this time, the pressure of the hydraulic oil will push the sealing seat 22 to move to the right, opening the sealing seat 22 to block the connecting hole 3 20. The hydraulic oil is able to enter between piston 1 8 and piston 2 16, pushing piston 2 16 to move to the right. In this way, in addition to the previous three forces driving piston 1 8 to move to the right, the direct driving effect of hydraulic oil on piston 2 16 is now added, which is equivalent to four forces jointly driving piston 2 16 to move to the right. This multi-force driving method enables the piston in the main cylinder to obtain a sufficiently large driving force and is easier to be pushed, thereby achieving rapid response and efficient action.

[0092] When the piston 16 moves to the left to reset, it pushes the piston 18 to move to the left as well. At this time, the sealing seat 22 is in a state of blocking the connecting hole 3 20. When the piston 18 moves close to the sealing assembly 10, the push-opening member 25 collides with the right end of the sealing assembly 10. The collision causes the push-opening member 25 to move to the right, and the push rod 24 pushes the sealing seat 22 to move to the right and open, thereby releasing the liquid pressure between the piston 18 and the piston 2 16. This process ensures that the liquid pressure can be safely released when the piston is reset, avoiding damage to the system due to the failure to release the liquid pressure in time, and further improving the reliability and service life of the clutch booster.

[0093] In summary, this clutch booster achieves multi-force driving of piston 2 to the right through ingenious structural design, improves the driving force and response speed of the piston, and can safely release force when the piston is reset, greatly improving the service life and performance of the clutch booster.

[0094] The air valve body arranged on the right side of the mounting plate plays a key role in controlling the air path. The air valve body has a valve cavity, which is divided into different functional sections from left to right. The first sealing section, the second sealing section, the air outlet section and the air inlet section are arranged in sequence, and the annular sealing ring on the inner wall is located between the air outlet section and the air inlet section, and the diameter of the second sealing section is larger than that of the first sealing section. This design of diameter difference provides a specific space for the installation and sealing of different components.

[0095] An air valve body 26 is disposed on the right side of the mounting plate body 2 . The air valve body 26 has a valve cavity. The left end of the valve cavity is communicated with the oil passage 11 , and the right end of the valve cavity penetrates the outer side wall of the air valve body 26 .

[0096] The valve cavity comprises, from left to right, a first sealing section 27, a second sealing section 28, an air outlet section 29, and an air inlet section 30. An inner wall of the valve cavity is provided with an annular sealing ring 31, which is located between the air outlet section 29 and the air inlet section 30. The diameter of the second sealing section 28 is greater than that of the first sealing section 27.

[0097] The air inlet section 30 is provided with a movable valve core 32, a fixed seat 33, and a retaining ring 49 from left to right. The retaining ring 49 limits the rightward movement of the fixed seat 33. The movable valve core 32 can move left and right. The fixed seat 33 is sealed with the inner wall of the air inlet section 30. A spring 1 34 is provided between the movable valve core 32 and the fixed seat 33. Under the elastic force of the spring 1 34, the movable valve core 32 and the sealing ring 31 are kept in a sealed state. The air inlet section is provided with a movable valve core, a fixed seat, and a retaining ring from left to right. The function of the retaining ring is to limit the rightward movement of the fixed seat and ensure that the fixed seat works stably within a certain range. The movable valve core can move left and right. The fixed seat is sealed with the inner wall of the air inlet section to ensure that the gas will not leak from the fixed seat and the inner wall of the air inlet section. A spring 1 is provided between the movable valve core and the fixed seat. Under the elastic force of the spring 1, the movable valve core and the sealing ring are kept in a sealed state, thereby preventing the gas from entering the air outlet section from the air inlet section under normal conditions.

[0098] A shaft rod 35 which can move leftward and rightward is arranged in the first sealing section 27, the second sealing section 28 and the air outlet section 29.

[0099] The left end of the shaft rod 35 is sealed with the inner wall of the first sealing section 27 to ensure that the hydraulic oil will not leak from these parts. The middle part of the shaft rod 35 is sealed with the inner wall of the second sealing section 28. The right end of the shaft rod 35 can pass through the sealing ring 31 and abut against the left end of the movable valve core 32.

[0100] When the hydraulic oil enters the oil passage, the oil pressure causes the shaft rod 3 to move to the right. The movement of the shaft rod 3 pushes the moving valve core to move to the right, thereby breaking the sealing state between the moving valve core and the sealing ring. At this time, the air inlet starts to supply air normally, and the gas in the air inlet section enters the air outlet section, and then enters the air inlet 2 through the air outlet 1, and finally enters the cylinder, pushing the piston 3 to move to the right. This design allows the air intake to start at the same time as the oil intake, realizing the coordinated operation of the hydraulic and pneumatic systems, and improving the response speed and working efficiency of the clutch booster.

[0101] A second spring 36 is disposed in the air outlet section 29 , and two ends of the second spring 36 are respectively against the sealing ring 31 and the third shaft 35 .

[0102] The air valve body 26 is provided with an air inlet 37 connected to the air inlet section 30, and the air valve body 26 is provided with an air outlet 38 connected to the air outlet section 29. The air outlet 38 and the air inlet 4 are connected through a pipeline.

[0103] An air passage 1 39 connecting the right end of the air cylinder 3 and the second sealing section 28 is provided inside the mounting plate body 2 and the air valve body 26, an air passage 2 40 penetrating the right end of the shaft rod 3 35 is provided inside the shaft rod 3 35, and an air hole 401 connecting the air passage 2 40 and the second sealing section 28 is provided on the shaft rod 3 35.

[0104] When the oil pressure acting on the left end of the shaft rod 35 disappears, the shaft rod 35 moves to the left under the action of the spring 2 36, and the movable valve core 32 moves to the left, and seals with the sealing ring 31 again to close the air intake. At this time, the piston 3 6 in the cylinder 3 also moves to the left, and the gas in the cylinder 3 can enter the outlet 1 38, the outlet section 29, the air passage 2 40, the air hole 401, the air passage 1 39, and the cylinder 3 through the pipeline in sequence. When the piston 3 6 moves to the left, the outside air also enters the cylinder 3 through the outlet hole 5.

[0105] The leftward movement of the shaft rod 3 drives the movable valve core to move to the left, and re-seals with the sealing ring to close the air intake. At this time, the piston 3 in the cylinder is also moving to the left. When the piston 3 moves to the left, the gas in the cylinder can enter the outlet 1, the outlet section, the air channel 2, the air hole, the air channel 1 in sequence through a specific pipeline, and finally return to the cylinder. At the same time, the outside air also enters the cylinder through the air outlet hole to ensure the balance of the air pressure in the cylinder and prepare for the next work.

[0106] In summary, this clutch booster achieves linkage control of hydraulic oil and air pressure through the ingenious design of the air valve body, making the clutch booster more stable and efficient during operation, further improving its service life and performance.

[0107] A push block 41 which can move left and right is provided in the main cylinder body 1. The push block 41 is located on the right side of the piston 16. A connecting hole 42 is provided on the push block 41 which runs through the left and right sides thereof. The connecting hole 42 is used for ventilation on both sides of the push block 41. A spring 5 43 is provided between the push block 41 and the piston 16. A top column 44 extending to the right is provided at the right end of the piston 16. A connecting groove 1 45 corresponding to the top column 44 is provided at the left end of the push block 41. A connecting groove 2 46 is provided at the right end of the push block 41.

[0108] The push block 41 that can move left and right is arranged in the main cylinder body 1 and is located on the right side of the piston 2 16. The connecting hole 42 that runs through the left and right sides of the push block 41 plays an important role. It can ensure that the air pressure on both sides of the push block 41 is balanced to avoid affecting the normal movement of the push block due to the pressure difference on both sides. The spring 5 43 arranged between the push block 41 and the piston 2 16 plays a buffering role in the interaction between the push block 41 and the piston 2 16. When the push block 41 is pushed to the left by an external force, the spring 5 43 can reduce the impact force of the push block 41 on the piston 2 16, protecting the piston 2 16 and the stability of the entire system.

[0109] The right end of the piston 2 16 is provided with a top column 44 extending to the right, and the left end of the push block 41 is provided with a connecting groove 1 45 corresponding to the top column 44. In the initial state, the top column 44 and the push block 41 are in a separated state. This separation state provides a certain flexibility for the normal operation of the system. When the external ball head shaft pushes the push block 41 to move to the left, the push block 41 will gradually approach the piston 2 16 until it contacts and collides with the top column 44. At this time, the push block 41 can effectively transmit the external thrust to the piston 2 16, pushing the piston 2 16 to move to the left.

[0110] The ball shaft outside the cylinder is connected to the right end connecting groove 46 of the push block 41. Through this connection method, the ball shaft pushes the push block 41 to move to the left, and then pushes the piston 16 to move to the left. Unlike the traditional method of directly pushing the piston through the ball shaft, the push block can be used to achieve coaxial force on the piston. In previous designs, since the ball shaft does not maintain coaxial force with the piston, the piston will be subjected to forces in various directions, which will increase the friction between the piston and the inner wall of the cylinder body and affect the service life of the clutch booster. Now, through the intervention of the push block, the thrust of the ball shaft can act on the piston more evenly, so that the piston will not be affected by non-coaxial forces during movement, thereby reducing the friction between the piston and the inner wall of the cylinder body, greatly improving the service life of the clutch booster.

[0111] In summary, this design improves the way the ball head shaft applies force to the piston through the clever use of the push block, thereby increasing the working stability and service life of the clutch booster.

[0112] The left end of the shaft rod 13 is sleeved with a spring 6 47, and the right end of the spring 6 47 is fixedly connected to the shaft rod 13. The spring 6 47 can exert a rightward elastic force on the shaft rod 13. The elastic force of the spring 6 plays a certain role in resetting the system. When the pressure in the system gradually decreases and the shaft rod 1, piston and other components need to move to the left to reset, the elastic force of the spring 6 can help slow down the leftward movement speed of the shaft rod 1, avoid its rapid leftward movement to produce impact, and protect the various components in the system from damage.

[0113] The left end of the piston 8 is sleeved with a spring 848, which constrains the push-up member 25 in the slot 21. The existence of the spring 848 is mainly to constrain the U-shaped push-up member 25 in the slot 21. During the operation of the clutch booster, due to the action of various forces and the movement of components, the push-up member 25 may be disturbed by external forces and tend to escape from the slot 21. The spring 848 exerts a force on the push-up member 25 toward the slot 21 through its own elastic force, so that the push-up member 25 can be stably maintained in the correct position in the slot 21.

[0114] A spring 3 50 is provided inside the cylinder 3, and the spring 3 50 is located on the right side of the piston 3 6. When the piston 3 6 moves to the right, whether due to gas pressure (propelled by gas entering from the air inlet 2 4) or thrust transmitted from the auxiliary cylinder body 12 through the shaft 13, the spring 3 50 can play a buffering role. When the piston 3 6 moves to the right quickly, it will compress the spring 3 50, and the elastic potential energy of the spring 3 50 will gradually increase, thereby slowing down the movement speed of the piston 3 6, and preventing the piston 3 6 from violently colliding with the right end of the cylinder 3 or other related parts. This buffer can reduce the impact force between parts, reduce the risk of damage to parts that may be caused by collision, and extend the service life of parts.

[0115] The left and right ends of the shaft rod 13 are respectively provided with sealing rings that seal with the inner wall of the auxiliary cylinder body 12, and the side wall of the auxiliary cylinder body 12 is provided with an exhaust hole 51, which is located between the left and right end sealing rings of the shaft rod 13. The right end of the main cylinder body 1 is provided with an exhaust hole 2 52 that communicates with the interior thereof.

[0116] The left and right ends of the shaft rod 13 are respectively provided with sealing rings that seal with the inner wall of the auxiliary cylinder body 12. This design is intended to ensure that the shaft rod 1 can maintain good sealing when moving inside the auxiliary cylinder body to prevent leakage of hydraulic oil or gas. However, despite the existence of the sealing ring, in actual use, due to the influence of various factors, the seal may leak.

[0117] When the seal between the shaft rod 1 and the cylinder leaks, gas may leak from the cylinder to the shaft rod 1. At this time, the exhaust hole 1 51 on the side wall of the auxiliary cylinder body 12 plays an important role. The exhaust hole 1 is located between the sealing rings at the left and right ends of the shaft rod 1, and can timely discharge the gas leaking into this area. This can prevent the leaked gas from accumulating inside the auxiliary cylinder body, thereby affecting the normal movement of the shaft rod 1 and the performance of the entire clutch booster.

[0118] During the movement of the piston in the master cylinder 1, air pressure that cannot be discharged in time may be formed at the right end of the master cylinder. For example, when the piston moves to the right, the space at the right end of the master cylinder may be compressed, thereby generating a certain amount of air pressure. If this air pressure cannot be discharged in time, it will hinder the movement of the piston and affect the working efficiency and stability of the clutch booster.

[0119] The second exhaust hole 52 at the right end of the main cylinder body provides an additional exhaust path for this situation. When there is air pressure in the main cylinder body that cannot be discharged in time, the second exhaust hole can discharge the gas out of the main cylinder body, thereby maintaining the air pressure balance in the main cylinder body and ensuring that the piston can move smoothly. This can improve the response speed and working reliability of the clutch booster and extend its service life.

[0120] In summary, the sealing ring of the shaft rod 1 and the exhaust hole 1 as well as the exhaust hole 2 of the main cylinder body work together to ensure the sealing and air pressure balance of the clutch booster during operation, thereby improving its performance and reliability.

[0121] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A clutch booster with a long service life, comprising a tubular main cylinder body (1), wherein a mounting plate body (2) is provided at the left end of the main cylinder body (1); The left side of the mounting plate (2) is connected to a cylinder (3); the left end of the cylinder (3) is provided with an air inlet port 2 (4) communicating with the inside thereof; the right end of the cylinder (3) is provided with an air outlet hole (5); a piston 3 (6) movable leftward and rightward is provided in the cylinder (3); a shaft rod 2 (7) is connected to the piston 3 (6); A piston (8) which can move leftward and rightward is provided in the main cylinder body (1). The piston (8) is sealed with the inner wall of the main cylinder body (1). The right end of the shaft rod (7) is connected to the left end of the piston (8). A mounting tube (9) coaxially connected to the main cylinder body (1) is provided on the left side of the mounting plate body (2), an annular sealing assembly (10) is fixedly provided inside the mounting tube (9), the sealing assembly (10) forms a sliding seal with the second shaft rod (7), and the sealing assembly (10) forms a seal with the inner wall of the mounting tube (9); the characteristics are: An oil passage (11) is provided inside the mounting plate (2), and one end of the oil passage (11) is connected to the space between the sealing assembly (10) and the piston 1 (8) in the main cylinder (1); A tubular auxiliary cylinder body (12) is provided at the left end of the cylinder (3), the auxiliary cylinder body (12) is connected to the cylinder (3), a shaft rod (13) movable leftward and rightward is provided in the auxiliary cylinder body (12), and the shaft rod (13) is in sealing cooperation with the inner wall of the auxiliary cylinder body (12); The left end of the auxiliary cylinder body (12) forms an oil inlet (14); The mounting plate body (2) is provided with an oil supply port (15) which is in communication with the other end of the oil passage (11); the oil supply port (15) and the oil inlet port (14) are in communication with each other through a pipeline; The main cylinder body (1) is provided with a second piston (16) which can move leftward and rightward. The second piston (16) is in sealing cooperation with the inner wall of the main cylinder body (1). The second piston (16) is located on the right side of the first piston (8). A fourth spring (17) is provided between the second piston (16) and the first piston (8). The left end of the piston one (8) is provided with a connecting hole one (18), the right end of the piston one (8) is provided with a connecting hole two (19), and the middle of the piston one (8) is provided with a connecting hole three (20) which connects the connecting hole one (18) and the connecting hole two (19), and the diameter of the connecting hole three (20) is smaller than the diameters of the connecting hole one (18) and the connecting hole two (19); the left end of the piston one (8) is provided with a groove (21) which passes through both sides and the left side thereof along its radial direction, and the groove (21) passes through the connecting hole one (18) and the left end of the connecting hole three (20), and the right end of the shaft rod two (7) is connected to the connecting hole one (18); A sealing seat (22) and a spring (23) are provided in the connection hole (20). The diameter of the sealing seat (22) is smaller than the diameter of the connection hole (19). The spring (23) is located on the right side of the sealing seat (22). The spring (23) applies elastic force to the sealing seat (22) so that the sealing seat (22) is in a state of blocking the connection hole (20). A push rod (24) is provided at the left end of the sealing seat (22), the push rod (24) extends into the third connecting hole (20), and the diameter of the push rod (24) is smaller than the diameter of the third connecting hole (20); A U-shaped push-opening member (25) is connected to the groove (21), the push-opening member (25) is opened to the left, and the left end of the push rod (24) abuts against the middle part of the push-opening member; when the sealing seat (22) is in a state of blocking the connecting hole three (20), the push rod (24) pushes the push-opening member (25) and makes the left end of the push-opening member (25) protrude from the left end surface of the piston one (8).

2. A clutch booster with a long service life according to claim 1, characterized in that: The mounting plate (2) is provided with a gas valve body (26), the gas valve body (26) having a valve cavity, the left end of the valve cavity being in communication with the oil passage (11), and the right end of the valve cavity penetrating the outer wall of the gas valve body (26); The valve cavity comprises, from left to right, a first sealing section (27), a second sealing section (28), an air outlet section (29), and an air inlet section (30); an inner wall of the valve cavity is provided with an annular sealing ring (31); the sealing ring (31) is located between the air outlet section (29) and the air inlet section (30); and the diameter of the second sealing section (28) is greater than the diameter of the first sealing section (27); A movable valve core (32) and a fixed seat (33) are provided in the air intake section (30) from left to right. The movable valve core (32) can move left and right. The fixed seat (33) is in sealing cooperation with the inner wall of the air intake section (30). A spring (34) is provided between the movable valve core (32) and the fixed seat (33). Under the elastic force of the spring (34), the movable valve core (32) and the sealing ring (31) are kept in a sealed cooperation state. A shaft rod three (35) movable leftward and rightward is provided in the first sealing section (27), the second sealing section (28) and the air outlet section (29); the left end of the shaft rod three (35) is in sealing cooperation with the inner wall of the first sealing section (27); the middle part of the shaft rod three (35) is in sealing cooperation with the inner wall of the second sealing section (28); the right end of the shaft rod three (35) can pass through the sealing ring (31) and abut against the left end of the movable valve core (32); a spring two (36) is provided in the air outlet section (29); the two ends of the spring two (36) are respectively abutted against the sealing ring (31) and the shaft rod three (35); The air valve body (26) is provided with an air inlet port 1 (37) communicating with the air inlet section (30), and the air valve body (26) is provided with an air outlet port 1 (38) communicating with the air outlet section (29), and the air outlet port 1 (38) and the air inlet port 2 (4) are connected via a pipeline; An air passage 1 (39) communicating with the right end of the air cylinder (3) and the second sealing section (28) is provided inside the mounting plate (2) and the air valve body (26); an air passage 2 (40) penetrating the right end of the shaft rod (35) is provided inside the shaft rod (35); and an air hole (401) communicating with the air passage 2 (40) and the second sealing section (28) is provided on the shaft rod (35).

3. A clutch booster with a long service life according to claim 2, characterized in that: A push block (41) movable leftward and rightward is provided in the main cylinder body (1). The push block (41) is located on the right side of the second piston (16). A connecting hole (42) penetrating the left and right sides of the push block (41) is provided. A spring (43) is provided between the push block (41) and the second piston (16). A top column (44) extending rightward is provided at the right end of the second piston (16). A connecting groove (45) corresponding to the top column (44) is provided at the left end of the push block (41). A connecting groove (46) is provided at the right end of the push block (41).

4. A clutch booster with a long service life according to claim 3, characterized in that: The left end of the shaft rod one (13) is sleeved with a spring six (47), and the spring six (47) can exert a rightward elastic force on the shaft rod one (13).

5. A clutch booster with a long service life according to claim 3, characterized in that: The left end of the piston 1 (8) is sleeved with a spring 8 (48), and the spring 8 (48) constrains the push-opening member (25) in the slot (21).

6. A clutch booster with a long service life according to claim 3, characterized in that: A retaining ring (49) is provided at the right end of the valve cavity for limiting the rightward movement of the fixing seat (33).

7. A clutch booster with a long service life according to claim 3, characterized in that: A retaining ring (49) is provided in the installation tube (9) for limiting the sealing assembly (10) from moving leftward.

8. The clutch booster with a long service life according to claim 3, characterized in that: A spring three (50) is provided inside the cylinder (3), and the spring three (50) is located on the right side of the piston three (6).

9. A clutch booster with a long service life according to claim 3, characterized in that: The left and right ends of the shaft rod 1 (13) are respectively provided with sealing rings that are sealed with the inner wall of the auxiliary cylinder body (12); the side wall of the auxiliary cylinder body (12) is provided with an exhaust hole 1 (51), and the exhaust hole 1 (51) is located between the left and right end sealing rings of the shaft rod 1 (13); the right end of the main cylinder body (1) is provided with an exhaust hole 2 (52) that is connected with the interior thereof.

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