Buffer structure of automobile shock absorber

Abstract

The invention discloses an automobile shock absorber buffering structure which comprises a buffering device body, an external buffering valve and a liquid storage cylinder, the buffering device body comprises a body cavity and a movable base body movably arranged at the top of the body cavity, the movable base body is connected with a shock absorber, and the body cavity is communicated with the liquid storage cylinder through the external buffering valve. The buffer structure of the automobile shock absorber is reasonable in design, compared with an existing traditional polyurethane buffer block, a force-displacement curve can be changed according to comfort, the existing problem that the requirement for comfort is not met is solved, and the comfort of an automobile can be effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile vibration reduction, in particular to a buffer structure of an automobile shock absorber. Background Art

[0002] The automobile shock absorber buffer block is a device that effectively reduces the vibration of the vehicle body during driving, making driving smoother and riding more comfortable. By buffering vibration, the buffer block can also significantly reduce noise during driving, improve driving comfort, absorb and disperse the external impact on the shock absorber, thereby reducing the burden on the shock absorber.

[0003] The existing buffer blocks are generally made of polyurethane foam. With the update of the automobile manufacturing industry, the existing traditional buffer blocks are increasingly difficult to meet the performance requirements of vehicle development, and the force-displacement curve of the traditional polyurethane buffer blocks cannot meet the current comfort requirements. Therefore, how to improve the durability and comfort of the buffer blocks while maintaining the existing shock absorption performance is a technical problem that we urgently need to solve.

[0004] For example, a shock absorber disclosed in patent CN205026003U includes: a buffer block, a dust cover, an upper spring disk and a piston rod, the upper spring disk is provided with a first groove, the dust cover is provided with a second groove, and the positions of the first groove and the second groove correspond to each other; the upper spring disk cover is provided on the dust cover, and the two are fixedly connected through the first groove and the second groove; a protrusion is formed on the reverse side of the second groove, and the protrusion is embedded in the upper part of the buffer block, and the piston rod passes through the upper spring disk and the dust cover and is nested in the buffer block; the buffer block adopts polyurethane, which cannot meet the higher requirements of automobile comfort. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a shock absorber buffer structure for an automobile, so as to achieve a better vibration reduction and buffering effect and effectively improve the comfort of the automobile.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] The automobile shock absorber buffer structure comprises a buffer device body, an external buffer valve and a liquid storage cylinder. The buffer device body comprises a main body cavity and a movable base movably arranged on the top of the main body cavity. The movable base is connected to the shock absorber. The main body cavity is connected to the liquid storage cylinder through the external buffer valve.

[0008] Further:

[0009] The buffer device body is a buffer block structure, which includes a buffer block lower substrate and a buffer block upper substrate. A main body cavity is formed in the buffer block lower substrate, and the buffer block upper substrate is arranged on the top of the buffer block lower substrate.

[0010] The external buffer valve is integrated on the cavity wall of the main cavity.

[0011] The liquid storage cylinder comprises an outer cylinder, an inner air cavity and an oil cavity are formed in the outer cylinder, and the oil cavity is communicated with an external buffer valve.

[0012] The top end of the lower base of the buffer block is opened, the upper base of the buffer block is arranged in the opening, and the external buffer valve is arranged on the outer side of the lower base of the buffer block.

[0013] A movable partition is arranged between the air cavity and the oil cavity in the outer cylinder.

[0014] The upper base of the buffer block is connected to the upper connecting plate of the shock absorber through a polyurethane buffer pad, and the lower base of the buffer block is connected to the end cover of the shock absorber.

[0015] A flow hole is arranged on the side of the lower base of the buffer block, and the external buffer valve is fixed on the outer side of the lower base of the buffer block corresponding to the flow hole.

[0016] The external buffer valve comprises a valve shell and a buffer valve system arranged in the valve shell, and the buffer valve system is arranged corresponding to the flow hole.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] The automobile shock absorber buffer structure is reasonably designed. Compared with the existing traditional polyurethane buffer block, the force-displacement curve can be changed according to comfort to solve the existing problem of not meeting the comfort requirements, and the automobile comfort can be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following is a brief description of the contents and symbols in the drawings of this specification:

[0020] Figure 1 It is a schematic diagram of the buffer block body of the present invention.

[0021] Figure 2 It is a schematic diagram of the external buffer valve of the present invention.

[0022] Figure 3 It is a schematic diagram of a liquid storage cylinder of the present invention.

[0023] In the figure:

[0024] 1: upper base of buffer block, 2: lower base of buffer block, 3: external buffer valve, 4: flow hole A, 5: valve housing, 6: buffer valve system, 7: flow path, 8: inner air cavity, 9: oil cavity, 10: flow hole B, 11: outer cylinder. DETAILED DESCRIPTION

[0025] The specific implementation modes of the present invention will be further explained in detail below through the description of embodiments with reference to the accompanying drawings.

[0026] like Figures 1 to 3 As shown, the automobile shock absorber buffer structure includes a buffer device body, an external buffer valve 3 and a liquid storage cylinder; the buffer device body includes a main body cavity and a movable base movably arranged on the top of the main body cavity, the main body cavity stores buffer oil, the movable base is connected to the shock absorber, and the main body cavity is connected to the liquid storage cylinder through the external buffer valve.

[0027] The automobile shock absorber buffer structure of the present invention is reasonably designed, and the parameters of the external buffer valve can be adjusted to form a semi-active vibration reduction buffer mechanism, thereby improving the durability and comfort of the buffer block; compared with the existing traditional polyurethane buffer block, the force-displacement curve can be changed according to comfort to solve the existing problem of not meeting the comfort requirements, and the comfort of the automobile can be effectively improved.

[0028] The main body of the buffer device of the present invention is a buffer block structure, which is connected to the automobile shock absorber, effectively reducing the vibration of the vehicle body during driving, making driving more stable; by buffering vibration, the buffer structure of the present invention can also significantly reduce noise during driving, improve driving comfort, absorb and disperse the external impact on the shock absorber, thereby reducing the burden on the shock absorber, and operating stably and reliably; compared with the existing traditional polyurethane buffer block, it can change the force-displacement curve according to comfort, effectively improving the comfort performance of the automobile.

[0029] Preferably, the buffer block structure includes a buffer block lower substrate 1 and a buffer block upper substrate 2. A main cavity is formed in the buffer block lower substrate for storing buffer oil to achieve a buffering function; the buffer block upper substrate is arranged on the top of the buffer block lower substrate.

[0030] The external buffer valve is integrated on the cavity wall of the main cavity, and the liquid storage cylinder is arranged outside the buffer device body, and can also be integrated with the buffer device body to form a module assembly structure with a compact structure and easy layout and installation.

[0031] Furthermore, an opening is set at the top end of the lower base of the buffer block, the upper base of the buffer block is set in the opening, and the external buffer valve is set on the outer side of the lower base of the buffer block. The structure is simple and the cost is relatively low. The lower base of the buffer block is a cylindrical structure, and the bottom of the lower base of the buffer block is sealed by a head. The head can be adjusted to achieve the size of the main cavity in the main body of the buffer device to achieve different buffering effects.

[0032] A flow hole A4 is provided on the side of the lower base of the buffer block, and the external buffer valve is fixed on the outer side of the lower base of the buffer block corresponding to the flow hole A. Furthermore, a connecting groove is provided on the side of the lower base of the buffer block corresponding to the flow hole A, and the inner end of the external buffer valve is connected to the connecting groove through a threaded structure and a sealing ring, and the integrated arrangement has a compact structure.

[0033] like Figure 3As shown, the liquid storage cylinder includes an outer cylinder 11, and an inner air chamber 8 and an oil chamber 9 are formed in the outer cylinder, and the oil chamber is connected to the external buffer valve. Furthermore, a movable partition is provided between the air chamber and the oil chamber in the outer cylinder, and a flow hole B10 for connecting to the external buffer valve is provided in the oil chamber. When the shock absorber is compressed, the air chamber in the liquid storage cylinder is squeezed, and the oil chamber is filled with buffer to expand. After the vehicle passes the pit, the shock absorber is restored, and the liquid storage cylinder squeezes the oil chamber due to the air pressure in the air chamber, forcing the buffer in the oil chamber to return to the buffer valve through the flow hole B, thereby achieving a better buffering and vibration reduction effect.

[0034] The upper base of the buffer block is connected to the upper connecting plate of the shock absorber through a polyurethane buffer pad, and the lower base of the buffer block is connected to the shock absorber end cover. According to the height information given by the vehicle height sensor, the buffer valve system 6 changes the buffer diameter with the height. The lower the height, the greater the shock absorber compression, the greater the buffer valve damping, and the damping brought by squeezing the buffer simulates the traditional buffer block.

[0035] Preferably, the external buffer valve includes a valve housing 5 and a buffer valve system 6 arranged in the valve housing, the buffer valve system is arranged corresponding to the flow hole, and the buffer valve system includes a valve core and a spring structure; the valve housing is an openable component structure, and the spring structure can be adjusted to achieve buffer damping adjustment; or it can be achieved by using an existing electromagnetic regulating valve.

[0036] Preferred embodiments of the present invention are:

[0037] The automobile shock absorber buffer structure of the present invention is a semi-active buffer block, which mainly comprises a buffer device body, an external buffer valve body and a liquid storage cylinder.

[0038] The main body of the buffer device includes two coaxially arranged upper and lower parts, and the internal cavity stores buffer oil. Specifically, the main body of the buffer block includes an upper base connected to the upper connecting plate of the shock absorber; the upper connecting plate of the shock absorber is further connected to the upper base through a buffer limit pad made of polyurethane material; a lower base connected to the end cover of the shock absorber and moves according to the upper and lower compression and recovery of the shock absorber; and a buffer in the inner cavity of the upper and lower bases that plays a buffering role.

[0039] Furthermore, a buffer flow hole is provided on the lower base of the buffer device, and the hole is matched with an external buffer valve. Specifically, the buffer valve is assembled on the buffer block body through the buffer flow hole, and the buffer flow path starts from the inner cavity of the body, enters the buffer valve through the flow hole after being compressed, flows into the liquid storage cylinder after passing through the one-way flow limiting valve system with large damping, and then flows into the liquid storage cylinder through the valve body flow system; or starts from the liquid storage cylinder, flows into the buffer valve when recovering, and returns to the buffer device body after passing through the one-way flow limiting valve without damping.

[0040] Specifically, the flow limiting valve system inside the external buffer valve is a one-way limiting valve. The buffer flows through the main body to the valve system, showing a large damping flow limiting state; and flows through the liquid storage cylinder to the valve system, showing an undamped flow state. Furthermore, the external buffer valve is sealed and connected to the liquid storage cylinder to collect the buffer flowing through the buffer valve.

[0041] like Figure 1 As shown, the semi-active buffer block working body mainly includes the buffer block upper base 1, the buffer block lower base 2 and the flow hole A for connecting the external buffer valve. When the vehicle moves, the shock absorber is restored or compressed. The shock absorber end cover compresses and contacts the lower base to apply load force. After squeezing the buffer block, the oil in the oil cavity of the upper base and the lower base enters the buffer valve through the flow hole.

[0042] like Figure 2 As shown, the external buffer valve assembly according to the present invention comprises a flow hole A, a housing, a buffer valve system, and a flow path 7. According to the height information provided by the vehicle height sensor, the buffer valve system 6 changes the buffer flow path with the height. The lower the height, the greater the shock absorber compression, the greater the buffer valve damping, and the damping brought by squeezing the buffer simulates the traditional buffer block.

[0043] like Figure 3 As shown, after the buffer flows through the buffer valve, it enters the reservoir cylinder through the flow hole B. When the shock absorber is compressed, the air chamber 8 in the reservoir cylinder is squeezed, and the oil chamber 9 is filled with buffer to expand. After the vehicle passes the pit, the shock absorber recovers, and the reservoir cylinder squeezes the oil chamber due to the air pressure in the air chamber, forcing the buffer in the oil chamber to return to the buffer valve through the flow hole B. Compared with the existing traditional polyurethane buffer block, the force-displacement curve can be changed according to comfort to solve the existing problem of not meeting the comfort requirements.

[0044] The above is only an explanation of the preferred embodiments of the present invention, and the above technical features can be arbitrarily combined to form multiple embodiments of the present invention.

[0045] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A shock absorber structure for an automobile, characterized in that: The invention comprises a buffer device body, an external buffer valve and a liquid storage cylinder. The buffer device body comprises a main body cavity and a movable base movably arranged on the top of the main body cavity. The movable base is connected to the shock absorber. The main body cavity is connected to the liquid storage cylinder through the external buffer valve.

2. The automobile shock absorber buffer structure according to claim 1, characterized in that: The buffer device body is a buffer block structure, which includes a buffer block lower substrate and a buffer block upper substrate. A main body cavity is formed in the buffer block lower substrate, and the buffer block upper substrate is arranged on the top of the buffer block lower substrate.

3. The automobile shock absorber buffer structure according to claim 1, characterized in that: The external buffer valve is integrated on the cavity wall of the main cavity.

4. The automobile shock absorber buffer structure according to claim 1, characterized in that: The liquid storage cylinder comprises an outer cylinder, an inner air cavity and an oil cavity are formed in the outer cylinder, and the oil cavity is communicated with an external buffer valve.

5. The automobile shock absorber buffer structure as claimed in claim 2, characterized in that: The top end of the lower base of the buffer block is opened, the upper base of the buffer block is arranged in the opening, and the external buffer valve is arranged on the outer side of the lower base of the buffer block.

6. The automobile shock absorber buffer structure as claimed in claim 4, characterized in that: A movable partition is arranged between the air cavity and the oil cavity in the outer cylinder.

7. The automobile shock absorber buffer structure as claimed in claim 5, characterized in that: The upper base of the buffer block is connected to the upper connecting plate of the shock absorber through a polyurethane buffer pad, and the lower base of the buffer block is connected to the end cover of the shock absorber.

8. The automobile shock absorber buffer structure as claimed in claim 5, characterized in that: A flow hole is arranged on the side of the lower base of the buffer block, and the external buffer valve is fixed on the outer side of the lower base of the buffer block corresponding to the flow hole.

9. The automobile shock absorber buffer structure as claimed in claim 8, characterized in that: The external buffer valve comprises a valve shell and a buffer valve system arranged in the valve shell, and the buffer valve system is arranged corresponding to the flow hole.

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