CN216158176U

CN216158176U - Shock absorber with compression frequency response valve

Info

Publication number: CN216158176U
Application number: CN202122244246.1U
Authority: CN
Inventors: 邵东; 廖勤广
Original assignee: Sichuan Ningjiang Shanchuan Machinery Co ltd
Current assignee: Sichuan Ningjiang Shanchuan Machinery Co ltd
Priority date: 2021-09-16
Filing date: 2021-09-16
Publication date: 2022-04-01
Anticipated expiration: 2031-09-16

Abstract

The utility model discloses a shock absorber with a compression frequency response valve, aiming at the problems that the shock absorber in the prior art has relatively weak vibration filtering to high frequency, when the vehicle travels on a rough road surface, a cobblestone road surface or the like which can cause high-frequency vibration of the entire vehicle, the vibration of the vehicle body is more obvious, the technical scheme of the utility model comprises an outer cavity, a valve cover is arranged through the outer cavity, a first flow passage is arranged in the valve cover, the valve cover is connected with a valve seat, a second flow passage is arranged on the valve seat, the valve seat is contacted with the valve core component, the valve core is positioned in the valve cavity, a third flow passage is arranged between the valve core component and the valve cavity, and a flow valve plate is arranged at the joint of the third flow channel and the valve core assembly, an O-shaped rubber ring is arranged at the bottom of the flow valve plate, and a valve plate group is arranged at the bottom of the O-shaped rubber ring.

Description

Shock absorber with compression frequency response valve

Technical Field

The utility model belongs to the technical field of automobile shock absorbers, and particularly relates to a shock absorber with a compression frequency response valve.

Background

With the development of automobiles and the pursuit of higher and higher automobile comfort of modern people, the position of the shock absorber as an important part of the automobile comfort is more and more prominent. When the vehicle passes through an uneven road surface, the shock absorber can always move the spring seat in a reciprocating mode, and the vehicle is kept stable.

The existing passive shock absorber can adapt to most of uneven road surfaces, and provides good stability and operability for vehicles.

The prior art at least has the following technical problems: the damping force of the existing passive shock absorber is only the relation between the force value and the speed in the working process, and the high-frequency vibration filtering is relatively weak, so that the vibration of a vehicle body is obvious when the vehicle runs on a rough road, a cobblestone road or the like which can cause the high-frequency vibration of the whole vehicle.

Disclosure of Invention

The utility model provides a shock absorber with a compression frequency response valve, aiming at the problem that the shock absorber in the prior art is relatively weak in filtering high-frequency vibration, so that the vibration of a vehicle body is obvious when the vehicle runs on a rough road, a cobblestone road or a similar road which can cause the high-frequency vibration of the whole vehicle, and the utility model provides the shock absorber with the compression frequency response valve, which aims to: a frequency response valve system is provided, and when the uneven road surface frequency is high, the valve system is opened, so that the damping force of a high-frequency shock absorber is reduced, and the vibration of a high-frequency whole vehicle is improved.

In order to achieve the purpose, the utility model adopts the technical scheme that: the shock absorber with the compression frequency response valve comprises an outer cavity, a valve cover penetrates through the inner part of the outer cavity, a first flow channel is arranged in the valve cover, the valve cover is connected with a valve seat, a second flow channel is arranged on the valve seat, the valve seat is in contact with a valve core assembly, the valve core is located in a valve cavity, a third flow channel is arranged between the valve core assembly and the valve cavity, a flow valve plate is arranged at the joint of the third flow channel and the valve core assembly, an O-shaped rubber ring is arranged at the bottom of the flow valve plate, and a valve plate group is arranged at the bottom of the O-shaped rubber ring.

Preferably, the outer cavity is connected with the shock absorber and is positioned in the inner cylinder of the shock absorber.

Preferably, the outer cavity is provided with a threaded hole and is connected with the shock absorber through a bolt.

Preferably, the first flow passage is located in the center of the valve cover.

Preferably, the number of the second flow passages is two, and the second flow passages are symmetrically distributed on two sides of the valve seat.

Preferably, the third flow channel of the present invention is communicated with the first flow channel.

Preferably, the cross-sectional area of the third flow passage is larger than that of the first flow passage.

Preferably, the first flow passage and the second flow passage are controlled to be communicated or not by the valve core assembly.

Preferably, the compression frequency response valve of the present invention is symmetrical about the axis.

Compared with the prior art, the technical scheme of the utility model has the following advantages/beneficial effects:

1. the utility model solves the problem that the damping force in the working process of the existing shock absorber is only the relation between the force value and the speed, and the high-frequency vibration is relatively weak to be filtered. A compression frequency response valve with gradually changed force values under different frequencies during compression is designed.

2. According to the utility model, oil flows into the compression frequency response valve through the second flow passage, so that the effects that the shock absorption valve system releases pressure when the frequency is high and the damping force is reduced to a comfortable area are achieved, the driving comfort of the vehicle is improved, and the controllability of the vehicle is ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic diagram of the construction of a shock absorber having a compression frequency response valve of the present invention.

Fig. 2 is a schematic view showing a direction of oil flow in a passage of the compression frequency response valve of fig. 1.

FIG. 3 is a graph comparing the effect of a frequency response valve installed with and without the frequency response valve installed at a vehicle speed of 0.1 m/s.

FIG. 4 is a graph comparing the effect of a frequency response valve installed with and without the frequency response valve installed at a vehicle speed of 0.3 m/s.

FIG. 5 is a graph comparing the effect of a frequency response valve installed with and without the frequency response valve installed at a vehicle speed of 0.6 m/s.

FIG. 6 is a graph comparing the effect of a frequency response valve installed with and without the frequency response valve installed at a vehicle speed of 1.0 m/s.

The labels in the figure are respectively: 1. an outer cavity; 2. a valve cover; 201. a first flow passage; 3. a valve seat; 301. a second flow passage; 4. a valve core assembly; 401. a third flow path; 5. a flow valve plate; 6. an O-shaped rubber ring; 7. a valve cavity; 8. a valve plate set; 9. and (4) bolts.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are a part of the embodiments of the present invention, not all of the embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the detailed description of the embodiments of the present invention provided below is not intended to limit the scope of the utility model as claimed, but is merely representative of selected embodiments of the utility model.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

Example 1:

as shown in the figure, the shock absorber with the compression frequency response valve comprises an outer cavity 1, a valve cover 2 is arranged through the inner part of the outer cavity 1, a first flow channel 201 is arranged in the valve cover 2, the valve cover 2 is connected with a valve seat 3, a second flow channel 301 is arranged on the valve seat 3, the valve seat 3 is in contact with a valve core assembly 4, the valve core is positioned in a valve cavity 7, a third flow channel 401 is arranged between the valve core assembly 4 and the valve cavity 7, a flow valve plate 5 is arranged at the joint of the third flow channel 401 and the valve core assembly 4, an O-shaped rubber ring 6 is arranged at the bottom of the flow valve plate 5, and a valve plate group 8 is arranged at the bottom of the O-shaped rubber ring 6. The first flow passage 201 according to the present invention is located at the center of the bonnet 2. The number of the second flow passages 301 is two, and the second flow passages are symmetrically distributed on two sides of the valve seat 3. The third flow channel 401 communicates with the first flow channel 201. The cross-sectional area of the third flow channel 401 is larger than the cross-sectional area of the first flow channel 201. The first flow passage 201 and the second flow passage 301 are controlled to be communicated or not through the valve core assembly 4.

The outer cavity 1 is connected with a shock absorber and is positioned in an inner cylinder of the shock absorber. The outer cavity 1 is provided with a threaded hole and is connected with a shock absorber through a bolt 9.

The working principle is as follows:

when the product runs at a low frequency, namely when a vehicle runs on a normal road surface, the flow rate of liquid in unit time is low, and the third flow channel 401 of the liquid is unblocked, so that the pressure of the first flow channel 201 is equal to the pressure of the third flow channel 401, and the area of the third flow channel 401 area is larger than that of the first flow channel 201 area, so that the force F applied to the valve core assembly 4 is downward (taking figure 1 as an example), the valve core assembly 4 can cling to the valve seat 3, the valve cannot be opened, the compression frequency response valve is ensured not to work in the state, and the original performance of the product is maintained.

When a product runs at a high frequency, namely when a vehicle runs on a rough road surface, the flow rate of liquid in unit time is large and the liquid is reversed back and forth, the third flow channel 401 of the liquid reaches a small hole blocking condition, so that the pressure of the first flow channel 201 is greater than that of the third flow channel 401, and after a certain pressure difference is reached, the force F borne by the valve core assembly 4 is upward (taking fig. 1 as an example), so that the valve core assembly 4 cannot be tightly attached to the valve seat 3, and the valve is opened, thereby ensuring that the compression frequency response valve starts to work in the state, and fluid flows along the first flow channel 201 and the second flow channel 301 (as shown in fig. 2), and the second flow channel 301 is added, so that the damping force of the product is reduced, the original performance of the product is changed, and the comfort of the whole vehicle is improved. After the vehicle returns to the whole vehicle road surface, the flow valve plate 5 can quickly enable the valve core assembly 4 to be tightly attached to the valve seat 3, so that the product is ensured to return to the original product performance, and the normal running of the vehicle is ensured.

FIG. 3 is a graph showing the effect of a frequency response valve installed versus an uninstalled compression frequency response valve at a vehicle speed of 0.1 m/s.

FIG. 4 is a graph showing the effect of a frequency response valve installed versus an uninstalled compression frequency response valve at a vehicle speed of 0.3 m/s.

FIG. 5 is a graph showing the effect of a frequency response valve installed versus an uninstalled compression frequency response valve at a vehicle speed of 0.6 m/s.

FIG. 6 is a graph showing the effect of a frequency response valve installed versus a compression frequency response valve not installed at a vehicle speed of 1.0 m/s.

The comparison shows that the compression frequency response valve can release pressure when the automobile reaches high frequency, the damping force is reduced to a comfortable area, the driving comfort of the automobile is improved, and the controllability of the automobile is ensured.

The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the utility model, and these modifications and adaptations should be considered within the scope of the utility model.

Claims

1. The utility model provides a bumper shock absorber with compression frequency response valve, its characterized in that includes the exocoel, passes the exocoel inside and is provided with the valve gap, be provided with first runner in the valve gap, valve gap connection has the disk seat, be provided with the second runner on the disk seat, the disk seat contacts with the case subassembly, the case is located the valve pocket inside, be provided with the third runner between case subassembly and the valve pocket, the third runner with case subassembly junction is provided with the circulation valve block, the bottom of circulation valve block is provided with O type rubber circle, the bottom of O type rubber circle is provided with the valve piece group.

2. A shock absorber having a compression frequency response valve as set forth in claim 1, wherein said outer chamber is disposed in connection with the shock absorber within the inner tube of the shock absorber.

3. A shock absorber having a compression frequency response valve as set forth in claim 2 wherein said outer chamber is provided with a threaded bore for connection to the shock absorber by a bolt.

4. A shock absorber having a compression frequency response valve as set forth in claim 1, wherein said first flow passage is located in the center of the valve cover.

5. The shock absorber having a compression frequency response valve according to claim 1, wherein the number of the second flow passages is two and the second flow passages are symmetrically distributed on both sides of the valve seat.

6. A shock absorber having a compression frequency response valve according to claim 1, wherein said third flow passage communicates with said first flow passage.

7. A shock absorber having a compression frequency response valve according to claim 1, wherein the cross-sectional area of the third flow passage is greater than the cross-sectional area of the first flow passage.

8. The shock absorber having a compression frequency response valve according to claim 1, wherein the first and second flow passages are controlled to communicate by a spool assembly.

9. A shock absorber having a compression frequency response valve as set forth in claim 1, wherein the compression frequency response valve is of symmetrical construction about the shaft axis.