Automobile vacuum booster convenient to disassemble

Abstract

The automobile vacuum booster convenient to disassemble comprises a push rod, a booster shell is installed on the outer wall of the push rod, when the automobile vacuum booster convenient to disassemble is used, a clamping rod is pressed, a clamping frame is clamped and fixed through the clamping rod, then a pedal is treaded, the pedal ejects an ejector rod out, atmospheric pressure enters from an inner hole position of a control valve block, and then the control valve block is opened; a distributor plunger abuts against a push rod, an atmospheric valve body closes a vacuum cavity connecting channel, meanwhile, a variable pressure cavity channel is opened, a vacuum cavity and a variable pressure cavity generate pressure difference, the pressure pushes a flexible diaphragm piece to move towards the vacuum cavity, the atmospheric valve body and the flexible diaphragm piece are driven to move together, the push rod moves, and force is transmitted to a main cylinder; and finally, the pedal is loosened, the air channel is closed by the atmospheric valve body, the variable pressure cavity becomes vacuum again by opening the vacuum channel, and the automobile vacuum booster convenient to disassemble is completed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile accessories, in particular to a convenient-to-disassemble automobile vacuum booster. BACKGROUND

[0002] As a key component of the braking system, the automobile vacuum booster plays an extremely important role in the vehicle braking process. Its core function is to significantly enhance the force exerted on the brake pedal by the driver with the help of vacuum negative pressure, thereby greatly reducing the driver's operating burden, making it easy and convenient to step on the brake pedal, and ensuring that the automobile can be safely, efficiently and quickly braked. It is an important part of ensuring the safety of vehicle travel. With the rapid development of the automobile industry and the continuous rise in the number of automobiles in use, the demand for automobile maintenance is growing. When the automobile braking system is repaired, maintained or parts are replaced, the vacuum booster often needs to be disassembled. The traditional automobile vacuum booster has many factors in design and structure that are not conducive to disassembly, which brings many challenges to maintenance work. Therefore, we need a convenient-to-disassemble automobile vacuum booster.

[0003] However, the current automobile vacuum booster has some screws with internal hexagonal or spline structure, which requires a special wrench. If the tools are not complete at the repair site, additional allocation is required, which prolongs the preparation time. Some screws are difficult to install due to narrow space, and the conventional wrench cannot fully fit, which is prone to "slip" or "break the nut". Repairing the slipped screw requires additional time, and a single screw needs to be rotated several times to completely detach. The angle of the booster needs to be adjusted manually to align the mounting hole, which not only wastes time but also easily causes misalignment, even damaging the mounting hole. There is no elastic self-releasing structure designed, and there is no anti-misoperation release structure when disassembling. SUMMARY

[0004] The purpose of the present application is to provide a convenient-to-disassemble automobile vacuum booster to solve the problems raised in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0006] The utility model provides a kind of automobile vacuum booster of convenient disassembly, including push rod, the outer wall of push rod is equipped with booster shell, the inner wall of booster shell is provided with vacuum cavity, the inner wall of booster shell is equipped with flexible diaphragm, one side of flexible diaphragm is equipped with metal support, one side of metal support is provided with variable pressure cavity, the inner wall of booster shell is equipped with first return spring, the inner wall of metal support is equipped with atmosphere valve body, the inner wall of atmosphere valve body is equipped with top rod, the outer wall of top rod is equipped with control valve piece, one side of control valve piece is equipped with second return spring, one end of top rod is equipped with distributor plunger, the outer wall of top rod is equipped with valve seat, the inner wall of top rod is uniformly bonded with first positioning magnetic ring, one side of first positioning magnetic ring is pasted with second positioning magnetic ring, the outer wall of second positioning magnetic ring is bonded with pedal, the inner wall of pedal is equipped with clamping rod, the outer wall of clamping rod is welded with third return spring, the inner wall of top rod is welded with fourth return spring, one end of fourth return spring is welded with clamping frame.

[0007] Preferably, the inner wall of the top rod is closely attached to the outer wall of the first positioning magnetic ring, and the diameter of the inner wall of the top rod is greater than the diameter of the outer wall of the first positioning magnetic ring.

[0008] Preferably, the outer wall of the second positioning magnetic ring is closely attached to the inner wall of the pedal, and the diameter of the outer wall of the second positioning magnetic ring is less than the diameter of the inner wall of the pedal.

[0009] Preferably, the clamping rod is movably connected to the top rod, and the inner wall of the top rod is designed as a hole type.

[0010] Preferably, the pedal is clampedly connected to the clamping rod, and the inner wall of the pedal is designed as a hole type.

[0011] Preferably, the third return spring is arranged in parallel with the clamping rod, and the inner wall of the clamping rod is designed as a slot type.

[0012] Preferably, the fourth return spring is arranged in parallel with the clamping frame, and the fourth return spring is symmetrically arranged about the central axis of the clamping frame.

[0013] Preferably, the clamping frame is movably connected to the top rod, and the clamping frame is symmetrically arranged about the central axis of the top rod.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] 1、Adopt the top rod, one end of the inner wall of which is fixed with a first positioning magnetic ring by bonding process, and a special industrial adhesive with high strength, high temperature resistance and anti-vibration characteristics is selected to ensure that the first positioning magnetic ring is stably connected to the inner wall of the top rod, and even under the complex working conditions of long-term driving of the vehicle, the position can remain stable, and positioning failure caused by loose magnetic ring can be avoided. Correspondingly, the pedal, as a direct component for the driver to operate the brake system, has a second positioning magnetic ring fixed to its inner wall by the same high-precision bonding process. The first and second positioning magnetic rings are strictly matched in magnetic polarity and calibrated in size, and the magnetic attraction force of the two is consistent with the assembly axis of the top rod and the pedal. The core function of the first positioning magnetic ring is to achieve rapid pre-positioning of the pedal. With the magnetic attraction force between the first positioning magnetic ring in the inner wall of the top rod and the second positioning magnetic ring in the inner wall of the pedal, the two can be automatically aligned in the magnetic attraction direction at the initial stage of assembly. The operator only needs to bring the assembly ends of the top rod and the pedal close, and the magnetic force of the first and second positioning magnetic rings will guide them to quickly find the correct relative position and complete pre-positioning. This process does not require complex measuring tools or fine manual adjustment, greatly shortening the assembly time. The precise size design of the first and second positioning magnetic rings ensures that the positional deviation after pre-positioning is controlled within a very small range, laying a good foundation for subsequent formal connection and effectively avoiding installation difficulties or component damage caused by pre-positioning deviation. When the top rod and the pedal are in alignment, the operator only needs to press the clamping rod in a specific direction. The pressing action should be applied to the operating end of the clamping rod, and the operator can quickly find the force point and efficiently exert force.With the press of the clamping rod, its end close to the inside of the top rod will gradually extend into the cavity of the top rod, and finally form a resistance with the preset clamping frame inside the top rod. It should be noted that the clamping frame can slide along a specific track inside the top rod, and one side of it is always in contact with the fourth return spring. When the clamping rod exerts a force on the clamping frame, the force will push the clamping frame to move in the direction of compressing the fourth return spring. At this time, the fourth return spring will generate an opposite elastic potential energy due to deformation. With the continuous advancement of the clamping rod, when the preset ring groove at one end of the clamping rod moves to the position aligned with the clamping end of the clamping frame, the elastic potential energy accumulated by the fourth return spring will be released instantly, pushing the clamping frame to reset quickly, so that its clamping end is accurately clamped into the ring groove of the clamping rod. The width and depth of the groove completely match the thickness and length of the clamping end of the clamping frame, ensuring that there is no radial looseness or axial movement after clamping. The edges of the ring groove are rounded, which not only facilitates the smooth clamping of the clamping frame, but also reduces mechanical wear during clamping, prolonging the service life of the component. The top rod and the pedal are stably connected through the clamping of the clamping rod and the clamping frame. The entire clamping process does not require the use of additional tools and can be completed through a single pressing action, greatly improving assembly efficiency. When the top rod and the pedal need to be disassembled and separated, the operator does not need to disassemble other auxiliary components. Only by directly pressing the clamping frame inside the top rod can the clamping end be pulled out of the ring groove of the clamping rod, that is, "decoupling" is achieved. At this time, the clamping rod loses the limiting constraint of the clamping frame and can be easily pulled out from the inside of the top rod. The connection state of the top rod and the pedal is released, completing the quick disassembly. The fourth return spring not only provides clamping power during the entire process, but also pushes the clamping frame to automatically reset to the initial position after disassembly, preparing for the next clamping assembly. At the same time, the elastic properties of the spring can buffer the impact force during the clamping of the clamping frame and the clamping rod, avoiding damage to the components caused by rigid collision, further ensuring the long-term use reliability of the connection structure.

[0016] 2、Adopt two symmetrical clamping frames arranged on the inner wall of the ejector rod, and the two clamping frames are matched with independent fourth return springs to form a double clamping and anti-misoperation protection mechanism. The two clamping frames are symmetrically arranged in the preset sliding track on the inner wall of the ejector rod with the axis of the clamping rod as the center, which can ensure that the clamping force of the two clamping frames on the clamping rod is evenly distributed, and avoid the clamping rod from tilting or unstable clamping due to unilateral force. One side of each clamping frame is connected with two fourth return springs, which can ensure that the two clamping frames can keep the initial extended state under the action of the spring elastic force, and make preparations for subsequent clamping. During the process of pressing the clamping rod after the ejector rod and the pedal are aligned, the end of the clamping rod inserted into the ejector rod will simultaneously form a resistance with the two symmetrical clamping frames. With the continuous advancement of the clamping rod, the two clamping frames will move in the direction of the corresponding fourth return spring under the action of the resistance, compress the spring and accumulate elastic potential energy. When the ring groove at one end of the clamping rod moves to the alignment position with the clamping end of the two clamping frames, the two fourth return springs will simultaneously release the elastic potential energy, push the two clamping frames to quickly reset, and make the clamping end of the two clamping frames clamp into the ring groove of the clamping rod at the same time. The double clamping structure not only greatly improves the connection strength of the clamping rod and the ejector rod, but also avoids the clamping failure caused by unilateral wear during long-term use through symmetrical force. In the disassembly process, since the two clamping frames are symmetrically distributed, and the position corresponding to each clamping frame on the side wall of the ejector rod is provided with a hole, the operator needs to simultaneously apply a pressing force with opposite directions to the force receiving ends of the two clamping frames, and the process needs to be operated by both hands to make the two clamping frames overcome the elastic force of the respective fourth return springs and move towards the inner wall of the ejector rod, so that the clamping ends of the two clamping frames are simultaneously taken out of the ring groove of the clamping rod, realizing "synchronous decamping" and eliminating the possibility of single clamping frame misoperation. If only one clamping frame is pressed, the clamping end of the clamping frame will be separated from the ring groove, but the other clamping frame is still in the clamped state, and the clamping rod will be limited by the clamping frame that is not taken out, and cannot be pulled out from the inside of the ejector rod. Even if foreign matter is caused by vibration during vehicle driving, it cannot make the two clamping frames decamp synchronously, effectively avoiding the brake system failure caused by accidental decamping, and further improving the use safety and stability of the entire vacuum booster structure. In the disassembly process of the ejector rod and the pedal, after the two clamping frames are pressed synchronously to realize decamping, the clamping rod is no longer limited by the clamping frame, but to realize the automatic withdrawal of the clamping rod from the inside of the ejector rod without manual pulling out again, the core relies on the potential energy release and reset action of the third return spring. The third return spring is sleeved outside the clamping rod, and the two ends are in contact with the inner wall of the ejector rod and the flange structure in the middle of the clamping rod. When the clamping rod is in the clamped state, the third return spring will be compressed due to the pushing of the clamping rod, and the elastic potential energy generated by the compression of the third return spring will be stored as a power source for subsequent reset of the clamping rod. The pre-compression design ensures that the spring can quickly release the potential energy at the moment of decamping of the clamping rod without additional power storage process.When the radial limit of the clamping rod is lost, the elastic potential energy stored by the third return spring is instantaneously converted into kinetic energy, generating a pushing force along the axial direction of the clamping rod. Under the action of this pushing force, the clamping rod quickly moves along the preset channel in the inner wall of the jacking rod until its one end reaches the parallel end of the inner wall of the jacking rod. After the third return spring pushes the clamping rod to reset to the parallel end of the inner wall of the jacking rod, the connection relationship between the clamping rod and the pedal is also released. Since the clamping rod has retreated to the safe limit position inside the jacking rod from the original state of penetrating the jacking rod and the pedal connection part, the pedal is no longer axially constrained by the clamping rod. The operator only needs to gently pull the pedal to smoothly remove it from the assembly end of the jacking rod. The entire process does not require manual pulling of the clamping rod, completely eliminating the additional step of "pulling the rod after decoupling" in traditional disassembly, greatly shortening the disassembly time, and avoiding component bumping or damage caused by improper manual pulling force control. The third return spring is made of a material with uniform elastic coefficient, ensuring stable pushing force output and avoiding clamping rod jamming or bouncing during resetting. Even under complex working conditions such as low temperature and vibration, the third return spring can still maintain stable elastic properties, ensuring the reliable automatic resetting function of the clamping rod after decoupling, further improving the stability and convenience of the entire vacuum booster disassembly process. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the vertical appearance structure of the automobile vacuum booster of the present application for convenient disassembly;

[0018] Figure 2 It is a schematic diagram of the vertical appearance structure of the automobile vacuum booster of the present application for convenient disassembly;

[0019] Figure 3 It is a schematic diagram of the vertical appearance structure of the automobile vacuum booster of the present application for convenient disassembly;

[0020] Figure 4 It is a schematic diagram of the vertical appearance structure of the automobile vacuum booster of the present application for convenient disassembly

[0021] Figure 5 It is a schematic diagram of the vertical appearance structure of the automobile vacuum booster of the present application for convenient disassembly;

[0022] Figure 6 It is a schematic diagram of the vertical appearance structure of the automobile vacuum booster of the present application for convenient disassembly; Figure 4 It is a schematic diagram of the vertical appearance structure of the automobile vacuum booster of the present application for convenient disassembly;

[0023] Figure 7 It is a schematic diagram of the vertical appearance structure of the automobile vacuum booster of the present application for convenient disassembly; Figure 5 It is a schematic diagram of the vertical appearance structure of the automobile vacuum booster of the present application for convenient disassembly.

[0024] In the figure: 1, push rod; 2, booster shell; 3, vacuum cavity; 4, flexible diaphragm; 5, metal bracket; 6, variable pressure cavity; 7, first return spring; 8, atmospheric valve body; 9, top rod; 10, control valve piece; 11, second return spring; 12, distributor plunger; 13, valve seat; 14, first positioning magnetic ring; 15, second positioning magnetic ring; 16, pedal; 17, clamping rod; 18, third return spring; 19, fourth return spring; 20, clamping frame. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0026] Please refer to Figures 1-7 The present application provides a kind of convenient disassembly's automobile vacuum booster technical solutions:

[0027] A kind of convenient disassembly's automobile vacuum booster, including push rod 1, the outer wall of push rod 1 is equipped with booster shell 2, the inner wall of booster shell 2 is provided with vacuum cavity 3, the inner wall of booster shell 2 is equipped with flexible diaphragm 4, the side of flexible diaphragm 4 is equipped with metal bracket 5, the side of metal bracket 5 is provided with variable pressure cavity 6, the inner wall of booster shell 2 is equipped with first return spring 7, the inner wall of metal bracket 5 is equipped with atmospheric valve body 8, the inner wall of atmospheric valve body 8 is equipped with top rod 9, the outer wall of top rod 9 is equipped with control valve piece 10, the side of control valve piece 10 is equipped with second return spring 11, one end of top rod 9 is equipped with distributor plunger 12, the outer wall of top rod 9 is equipped with valve seat 13, the inner wall of top rod 9 is all bonded with first positioning magnetic ring 14, the side of first positioning magnetic ring 14 is pasted with second positioning magnetic ring 15, the outer wall of second positioning magnetic ring 15 is bonded with pedal 16, the inner wall of pedal 16 is equipped with clamping rod 17, the outer wall of clamping rod 17 is welded with third return spring 18, the inner wall of top rod 9 is all welded with fourth return spring 19, one end of fourth return spring 19 is welded with clamping frame 20.

[0028] The inner wall of top rod 9 is tightly pasted with the outer wall of first positioning magnetic ring 14, and the inner wall diameter of top rod 9 is greater than the outer wall diameter of first positioning magnetic ring 14.

[0029] The outer wall of second positioning magnetic ring 15 is tightly pasted with the inner wall of pedal 16, and the outer wall diameter of second positioning magnetic ring 15 is less than the inner wall diameter of pedal 16.

[0030] Clamping rod 17 is movably connected with top rod 9, and the inner wall of top rod 9 is designed as a hole type.

[0031] The pedal 16 is connected with the clamping rod 17 in a clamping manner, and the inner wall of the pedal 16 is designed in a hole type.

[0032] The third return spring 18 is arranged in parallel with the clamping rod 17, and the inner wall of the clamping rod 17 is designed in a slot type.

[0033] The fourth return spring 19 is arranged in parallel with the clamping frame 20, and the fourth return spring 19 is arranged in a symmetrical manner with the central axis of the clamping frame 20.

[0034] The clamping frame 20 is movably connected with the top rod 9, and the clamping frame 20 is arranged in a symmetrical manner with the central axis of the top rod 9.

[0035] It should be noted that the present application is a kind of convenient disassembly's automobile vacuum booster, when using, the top rod 9 is bonded to the first positioning magnetic ring 14 and fixed, then the second positioning magnetic ring 15 is bonded to the pedal 16 and fixed, then the clamping rod 17 is pressed, the clamping rod 17 is inserted through the pedal 16, the clamping rod 17 is clamped to the clamping frame 20, then the pedal 16 is stepped on, the pedal 16 is pushed out of the top rod 9, the atmospheric pressure is entered from the inner hole of the control valve piece 10, the distributor plunger 12 is pushed against the push rod 1, the atmospheric valve body 8 is closed to the vacuum cavity 3 connection channel, and the variable pressure cavity 6 channel is opened, the atmosphere enters the rear part of the atmospheric valve body 8, reaches the specified limit, the vacuum cavity 3 and the variable pressure cavity 6 generate a pressure difference, the pressure drives the flexible diaphragm 4 to move to the vacuum cavity 3, drives the atmospheric valve body 8 and the flexible diaphragm 4 to move together, makes the push rod 1 move, transmits the force to the master cylinder, finally the pedal 16 is released, the atmospheric valve body 8 is closed to the air passage, the vacuum passage is opened, the variable pressure cavity 6 is vacuumed again, the first return spring 7 is pressed against the flexible diaphragm 4, and returns to the prohibited position, so a kind of convenient disassembly's automobile vacuum booster is completed.

[0036] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A car vacuum booster that is easy to disassemble, characterized in that: The device includes a push rod (1), an booster housing (2) mounted on the outer wall of the push rod (1), a vacuum chamber (3) provided on the inner wall of the booster housing (2), a flexible diaphragm (4) mounted on the inner wall of the booster housing (2), a metal bracket (5) mounted on one side of the flexible diaphragm (4), a variable pressure chamber (6) provided on one side of the metal bracket (5), a first return spring (7) mounted on the inner wall of the booster housing (2), an atmospheric valve body (8) mounted on the inner wall of the metal bracket (5), a push rod (9) mounted on the inner wall of the atmospheric valve body (8), a control valve plate (10) mounted on the outer wall of the push rod (9), and a control valve plate (10) on one side of the control valve plate (10). A second return spring (11) is installed, a distributor plunger (12) is installed at one end of the push rod (9), a valve seat (13) is installed on the outer wall of the push rod (9), a first positioning magnetic ring (14) is bonded to the inner wall of the push rod (9), a second positioning magnetic ring (15) is attached to one side of the first positioning magnetic ring (14), a pedal (16) is bonded to the outer wall of the second positioning magnetic ring (15), a locking rod (17) is installed on the inner wall of the pedal (16), a third return spring (18) is welded to the outer wall of the locking rod (17), a fourth return spring (19) is welded to the inner wall of the push rod (9), and a locking bracket (20) is welded to one end of the fourth return spring (19).

2. The easily disassembled automotive vacuum booster according to claim 1, characterized in that: The inner wall of the top rod (9) is in close contact with the outer wall of the first positioning magnetic ring (14), and the inner diameter of the top rod (9) is larger than the outer diameter of the first positioning magnetic ring (14).

3. The easily disassembled automotive vacuum booster according to claim 1, characterized in that: The outer wall of the second positioning magnetic ring (15) is in close contact with the inner wall of the pedal (16), and the outer diameter of the second positioning magnetic ring (15) is smaller than the inner diameter of the pedal (16).

4. The easily disassembled automotive vacuum booster according to claim 1, characterized in that: The clamp (17) is movably connected to the top rod (9), and the inner wall of the top rod (9) is designed with an opening.

5. The easily disassembled automotive vacuum booster according to claim 1, characterized in that: The pedal (16) is engaged with the lever (17), and the inner wall of the pedal (16) is designed with openings.

6. The easily disassembled automotive vacuum booster according to claim 1, characterized in that: The third return spring (18) is arranged parallel to the locking rod (17), and the inner wall of the locking rod (17) is designed with a slot.

7. A car vacuum booster that is easy to disassemble according to claim 1, characterized in that: The fourth return spring (19) is arranged parallel to the card holder (20), and the fourth return spring (19) is arranged symmetrically about the central axis of the card holder (20).

8. The easily disassembled automotive vacuum booster according to claim 1, characterized in that: The card holder (20) is movably connected to the top rod (9), and the card holder (20) is symmetrically arranged about the central axis of the top rod (9).

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