CN211693333U

CN211693333U - Automobile shock absorber ware with seal ring formula two-way valve

Info

Publication number: CN211693333U
Application number: CN202020140735.5U
Authority: CN
Inventors: 孙博坤; 钟文锋
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-01-21
Filing date: 2020-01-21
Publication date: 2020-10-16
Anticipated expiration: 2030-01-21

Abstract

The utility model relates to an automobile shock absorber with a seal ring type two-way valve, which comprises a cylinder barrel, wherein the cylinder barrel is provided with an inner cavity with an opening at one end, the other end of the inner cavity is provided with a mounting ring, a piston rod is arranged in the inner cavity, the bottom of the inner cavity is provided with a lower plug component, the joint of the piston rod and the cylinder barrel is provided with an upper plug component, the end part of the piston rod, which extends into one end of the inner cavity, is provided with a piston component which is linked with the piston rod, a float component which can move along the inner cavity is arranged in the inner cavity, an air cavity is formed between the float component and the lower plug, an inflation valve is arranged in the air cavity, a second oil cavity is formed between the piston component and the float component, a first oil cavity is formed between the upper plug component and the piston component, the first oil cavity and the second oil cavity are filled with, simple structure, the damping coefficient can be adjusted as required.

Description

Automobile shock absorber ware with seal ring formula two-way valve

Technical Field

The utility model relates to an automobile shock absorber ware field, concretely relates to automobile shock absorber ware with seal ring formula two-way valve.

Background

In order to quickly attenuate the vibration of a frame and a vehicle body and improve the running smoothness and comfort of an automobile, a shock absorber is generally arranged on an automobile suspension system, a bidirectional-action barrel type shock absorber is widely adopted on the automobile, and the barrel type automobile shock absorber is large in heating, large in noise, heavy in weight, short in service life and incapable of well meeting the use requirement of the automobile on the shock absorber.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to solve the above-mentioned deficiencies of the prior art,

the automobile shock absorber with the sealing ring type two-way valve is simple in structure, small in part number, light in weight, small in heat generation, low in noise, good in shock absorption effect, long in service life and capable of adjusting shock absorption coefficient according to needs.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides an automobile shock absorber ware with seal ring formula two-way valve, including the cylinder, the cylinder is equipped with one end open-ended inner chamber other end and is equipped with the collar, install the piston rod in the inner chamber, the end cap subassembly is installed down to the inner chamber bottom, and the end cap subassembly is installed to piston rod and cylinder junction, the piston rod stretches into the tip of inner chamber one end and installs the piston assembly who sets up with the piston rod linkage, install the float subassembly that can follow the inner chamber activity in the inner chamber, form the air cavity between float subassembly and the lower end cap subassembly, install the inflation valve in the air cavity, form the second oil pocket between piston assembly and the float subassembly, it forms first oil pocket to go up between end cap subassembly and the piston assembly, is filled with damping oil in first oil pocket and the second oil pocket, its characterized: the piston assembly is internally provided with a sealing ring type two-way valve structure, and the sealing ring type two-way valve comprises a first oil passing valve structure which enables damping oil to flow into the first cavity from the second cavity when the piston rod moves downwards and a second oil passing valve structure which enables the damping oil to flow into the second cavity from the first cavity when the piston rod moves upwards.

By adopting the technical scheme, the shock absorber can perform ascending shock absorption and descending shock absorption, when the shock absorber performs ascending shock absorption, shock absorption oil enters the second oil cavity from the first oil cavity of the seal ring type two-way valve arranged on the piston assembly through the first oil passing valve structure, at the moment, the second oil passing valve structure is automatically closed, the air cavity is automatically enlarged, the volume difference between the first oil cavity and the second oil cavity is compensated, when the shock absorber performs descending shock absorption, the oil enters the first oil cavity from the second oil cavity through the second oil passing valve structure, the first oil passing valve structure is automatically closed, the air cavity is automatically reduced, and the volume difference between the first oil cavity and the second oil cavity is compensated.

The automobile shock absorber with the seal ring type two-way valve can be further configured as follows: the piston assembly comprises a piston body, the first oil passing valve structure comprises a first oil drainage straight hole arranged in the piston body, one end of the first oil drainage straight hole is communicated with the first oil cavity, one end of the piston body close to the first oil cavity is provided with a first limiting seat with the outer diameter smaller than the inner diameter of the piston body, a first V-shaped limiting ring groove is arranged between the piston body and the first limiting seat, the first V-shaped limiting ring groove is provided with at least one group of first oil drainage side holes communicated with the first oil drainage straight hole, a first sealing ring with the outer diameter smaller than the inner diameter of the piston body and the diameter larger than the first oil drainage side holes is arranged in the first V-shaped limiting ring groove, the second oil passing valve structure comprises a second oil drainage straight hole arranged in the piston body in parallel to the first oil drainage straight hole, one end of the second oil drainage straight hole is communicated with the second oil cavity, one end of the piston body close to the second oil cavity is provided with a second limiting seat with the outer diameter smaller than the inner diameter, a second V-shaped limiting ring groove is arranged between the piston body and the second limiting seat, at least one group of second oil drainage side holes communicated with the second oil drainage straight holes are formed in the second V-shaped limiting ring groove, and a second sealing ring with the outer diameter smaller than the inner diameter of the piston body and the diameter larger than the second oil drainage side holes is installed in the second V-shaped limiting ring groove.

By adopting the technical scheme, the first oil chamber and the second oil chamber are communicated through the piston body, fluid enters the piston body through the first oil drainage straight hole when flowing to the second oil chamber from the first oil chamber, the first sealing ring is jacked open through the first oil drainage side hole and flows into the second oil chamber from the first oil drainage side hole, the fluid enters the piston body through the second oil drainage straight hole when flowing to the first oil chamber from the second oil chamber, the second sealing ring is jacked open through the second oil drainage side hole and flows into the second oil chamber from the second oil drainage side hole, and because the sealing rings are arranged at both ends of the piston body, when the fluid in the first oil chamber enters the first oil drainage straight hole, the second sealing ring is pressed in the second V-shaped limiting ring groove by the fluid pressure in the first oil chamber, therefore, the fluid cannot pass through the second oil drainage straight hole and flow out from the second oil drainage side hole, otherwise, when the fluid enters the second oil chamber and flows out from the second oil drainage side hole through the second oil drainage straight hole, the fluid in the first oil chamber can not enter the second oil chamber from the first oil discharge side hole, and the fluid can flow in one direction at the same time.

The automobile shock absorber with the seal ring type two-way valve can be further configured as follows: and a sealing structure is arranged between the middle part of the piston body and the cylinder barrel, the sealing structure comprises an installation groove arranged in the middle part of the piston body, and a third sealing ring is installed in the installation groove.

Adopt above-mentioned technical scheme, it is sealed through the sealing washer between cylinder and piston body, thereby prevent that damping oil from passing through in the gap between the two from influencing the damping performance.

The automobile shock absorber with the seal ring type two-way valve can be further configured as follows: the lower plug assembly comprises a lower plug body, an air injection cavity is formed in one end of the lower plug body, an air injection channel is formed in the lower plug body, one end of the air injection channel is communicated with the air injection cavity, the other end of the air injection channel is communicated with the air cavity, and a one-way valve structure is arranged at one end of the air injection channel, which is communicated with the air cavity.

Adopt above-mentioned technical scheme, from the gas injection chamber toward the air cavity injection gas, different pressure can be selected as required to gas, generate different damping coefficient, produce different shock attenuation effects, it is sealed to the encapsulating of gas injection chamber after gas injection chamber toward the air cavity injection gas from the gas injection chamber, form first sealed to the air cavity, gaseous can not flow the gas injection chamber again through the check valve structure after getting into the air cavity through the check valve structure, the check valve structure forms the second to the air cavity and seals.

The automobile shock absorber with the seal ring type two-way valve can be further configured as follows: the check valve structure comprises a third limiting seat, wherein the diameter of one end of the bottom of the inner cavity of the cylinder barrel is far away from the lower plug body and is smaller than the lower plug body, a third V-shaped limiting ring groove is formed between the third limiting seat and the lower plug body, and a fourth sealing ring, the outer diameter of which is smaller than the inner diameter of the lower plug body and the diameter of which is larger than the inner diameter of the gas injection channel, is installed in the third V-shaped limiting ring groove.

Adopt above-mentioned technical scheme, the external diameter of the spacing seat of third is less than down the external diameter of end cap body and therefore and form the clearance between the cylinder, can fully let during gas flows to the air cavity from the gas injection chamber, when aerifing the air cavity from the gas injection chamber, gas rushes open the fourth sealing washer through the gas injection passageway, in the flow direction air cavity, when stopping aerifing, the atmospheric pressure extrusion fourth sealing washer of air cavity for the fourth sealing washer plugs up the inflation passageway, forms sealedly.

The automobile shock absorber with the seal ring type two-way valve can be further configured as follows: and a closing groove is formed in the middle of the lower plug body and communicated with the gas injection channel.

The automobile shock absorber with the seal ring type two-way valve can be further configured as follows: and a second sealing structure is arranged between the lower plug body and the cylinder barrel, the second sealing structure comprises at least two second mounting grooves which are arranged at the middle part of the lower plug body at intervals, and a fifth sealing ring is mounted in each second mounting groove.

By adopting the technical scheme, the fifth sealing ring is arranged on the floater body, so that air leakage between the floater body and the cylinder barrel is prevented.

The automobile shock absorber with the seal ring type two-way valve can be further configured as follows: the cross sectional areas of the first oil drainage straight hole and the second oil drainage straight hole are different, and the cross sectional areas of the second oil drainage side hole and the second oil drainage side hole are different.

By adopting the technical scheme, the cross sectional areas of the first oil drainage straight hole and the second oil drainage straight hole are different, so that the flow of fluid passing through the first oil drainage straight hole and the second oil drainage straight hole in unit time in two directions is different, the force during uplink shock absorption and downlink shock absorption is different in magnitude, and the shock absorption effect is different.

The utility model has the advantages that: 1. the oil cavity and the compensation air cavity of the shock absorber are separated from each other, oil and gas are not mixed any more, and idle stroke caused by oil and gas mixing is avoided; 2. the oil cavity and the compensation air cavity of the shock absorber are separated, oil and gas are not mixed, bubbles are not generated, and the heating phenomenon caused by the bubbles is avoided; 3. the oil cavity and the compensation air cavity of the shock absorber are separated, oil and gas are not mixed, bubbles are not generated any more, and noise caused by the bubbles is avoided; 4. the flow direction of the damping oil entering the second oil chamber from the first oil chamber is opposite to that of the damping oil entering the first oil chamber from the second oil chamber, and the damping oil independently work without interference; 5. the structure is simple: the original spring piece working mode between the two cavities is changed into a two-way valve mode, so that the number of parts and the weight of a product are reduced; 6. the working mode of the spring piece formed by a plurality of parts is cancelled, the problem that the spring piece is damaged by punching is avoided, and the service life of the shock absorber is prolonged; 7. the pressure of the air cavity is filled after the assembly is finished, and the air cavity can be filled with air with different pressures according to the requirements of products, so that different damping coefficients are generated, and different damping effects are formed.

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Drawings

Fig. 1 is a schematic cross-sectional structure diagram of an embodiment of the present invention.

Fig. 2 is an enlarged schematic structural view of a seal ring type two-way valve according to an embodiment of the present invention.

Fig. 3 is an enlarged schematic structural view of an inflation valve according to an embodiment of the present invention.

Detailed Description

Referring to fig. 1-3: an automobile shock absorber with a sealing ring type two-way valve comprises a cylinder barrel 6, wherein the cylinder barrel 6 is provided with an inner cavity with an opening at one end, the other end of the inner cavity is provided with a mounting ring 16, a piston rod 7 is arranged in the inner cavity, the bottom of the inner cavity is provided with a lower plug component, the joint of the piston rod 7 and the cylinder barrel 6 is provided with an upper plug component, the upper plug component comprises an upper plug 3 and an oil-containing bearing 4, the upper plug 3 is limited at the other end of the cylinder barrel 6 through a gasket 2 at one end and is limited in the cylinder barrel 6 through an oil seal 5, the end part of one end, extending into the inner cavity, of the piston rod 7 is provided with a piston component which is in linkage with the piston rod 7, the other end is provided with a locking nut 1, the piston component is fixed on the piston rod 7 through a nut, a floater component which can, an inflation valve is arranged in the air cavity C, a second oil cavity B is formed between the piston assembly and the floater assembly, a first oil cavity A is formed between the upper plug assembly and the piston assembly, the first oil cavity A and the second oil cavity B are filled with damping oil, a sealing ring type two-way valve structure is arranged in the piston assembly, the sealing ring type two-way valve comprises a first oil passing valve structure which enables the damping oil to flow into the first cavity A from the second cavity B when the piston rod 7 descends and a second oil passing valve structure which enables the damping oil to flow into the second cavity B from the first cavity A when the piston rod 7 ascends, the piston assembly comprises a piston body 10, the first oil passing valve structure comprises a first oil discharge straight hole 25 arranged in the piston body 10, one end of the first oil discharge straight hole 25 is communicated with the first oil cavity A, a first limiting seat 31 with the outer diameter smaller than the inner diameter of the piston body 10 is arranged at one end of the piston body 10 close to the first oil cavity A, a first V-shaped limiting ring groove 32 is arranged between the piston body 10 and the first limiting seat 31, the first V-shaped limiting ring groove 32 is provided with a group of first oil drainage side holes 22 communicated with the first oil drainage straight holes 25, a first sealing ring 9 with the outer diameter smaller than the inner diameter of the piston body 10 and the diameter larger than the first oil drainage side holes 22 is arranged in the first V-shaped limiting ring groove 32, a second oil passing valve structure comprises second oil drainage straight holes 11 arranged in the piston body 10 in parallel with the first oil drainage straight holes 25, one end of each second oil drainage straight hole 11 is communicated with a second oil cavity B, one end of the piston body 10 close to the second oil cavity B is provided with a second limiting seat 33 with the outer diameter smaller than the inner diameter of the piston body 10, a second V-shaped limiting ring groove 34 is arranged between the piston body 10 and the second limiting seat 33, the second V-shaped limiting ring groove 34 is provided with a group of second oil drainage side holes 8 communicated with the second oil drainage straight holes 11, the outer diameter of the piston body 10 is arranged in the second V-shaped limiting ring, A second sealing ring 23 with the diameter larger than that of the second oil drain side hole 8, an upper step 26 arranged on the piston rod 7 for preventing the first oil drain straight hole 25 from being blocked, a lower step 12 arranged on the piston body 10, a second oil drain straight hole 11 for preventing the piston body 10 from being blocked, a sealing structure arranged between the middle part of the piston body 10 and the cylinder 6, the sealing structure comprising a mounting groove arranged at the middle part of the piston body 10, a third sealing ring 24 arranged in the mounting groove, a lower plug assembly comprising a lower plug body 14, an air injection cavity D arranged at one end of the lower plug body 14, an air injection channel 19 with one end communicated with the air injection cavity D and the other end communicated with the air cavity C arranged in the lower plug body 14, a steel ball 17 arranged at one end of the air injection channel 19 and the end communicated with the air cavity D, a check valve structure comprising a third limiting seat 41 with the lower plug body 14, the diameter of which is smaller than that of the lower plug body, a third V-shaped limiting ring groove 42 is arranged between the third limiting seat 41 and the lower plug body 14, a fourth sealing ring 18 with the outer diameter smaller than the inner diameter of the lower plug body 14 and the diameter larger than the inner diameter of the gas injection channel 19 is installed in the third V-shaped limiting ring groove 42, a closing groove is formed in the middle of the lower plug body 14 and communicated with the gas injection channel 19, a second sealing structure is arranged between the lower plug body 14 and the cylinder barrel 6 and comprises two second mounting grooves which are arranged in the middle of the lower plug body 14 at intervals, a fifth sealing ring 20 is installed in each second mounting groove, the cross sections of the first oil drain straight hole 25 and the second oil drain straight hole 11 are different, and the cross sections of the second oil drain side hole 8 and the second oil drain side hole 22 are different.

Claims

1. The utility model provides an automobile shock absorber ware with seal ring formula two-way valve, including the cylinder, the cylinder is equipped with one end open-ended inner chamber other end and is equipped with the collar, install the piston rod in the inner chamber, the end cap subassembly is installed down to the inner chamber bottom, and the end cap subassembly is installed to piston rod and cylinder junction, the piston rod stretches into the tip of inner chamber one end and installs the piston assembly who sets up with the piston rod linkage, install the float subassembly that can follow the inner chamber activity in the inner chamber, form the air cavity between float subassembly and the lower end cap subassembly, install the inflation valve in the air cavity, form the second oil pocket between piston assembly and the float subassembly, it forms first oil pocket to go up between end cap subassembly and the piston assembly, is filled with damping oil in first oil pocket and the second oil pocket, its characterized: the piston assembly is internally provided with a sealing ring type two-way valve structure, and the sealing ring type two-way valve comprises a first oil passing valve structure which enables damping oil to flow into the first cavity from the second cavity when the piston rod moves downwards and a second oil passing valve structure which enables the damping oil to flow into the second cavity from the first cavity when the piston rod moves upwards.

2. The shock absorber for an automobile having a seal ring type bi-directional valve as set forth in claim 1, wherein: the piston assembly comprises a piston body, the first oil passing valve structure comprises a first oil drainage straight hole arranged in the piston body, one end of the first oil drainage straight hole is communicated with the first oil cavity, one end of the piston body close to the first oil cavity is provided with a first limiting seat with the outer diameter smaller than the inner diameter of the piston body, a first V-shaped limiting ring groove is arranged between the piston body and the first limiting seat, the first V-shaped limiting ring groove is provided with at least one group of first oil drainage side holes communicated with the first oil drainage straight hole, a first sealing ring with the outer diameter smaller than the inner diameter of the piston body and the diameter larger than the first oil drainage side holes is arranged in the first V-shaped limiting ring groove, the second oil passing valve structure comprises a second oil drainage straight hole arranged in the piston body in parallel to the first oil drainage straight hole, one end of the second oil drainage straight hole is communicated with the second oil cavity, one end of the piston body close to the second oil cavity is provided with a second limiting seat with the outer diameter smaller than the inner diameter, a second V-shaped limiting ring groove is arranged between the piston body and the second limiting seat, at least one group of second oil drainage side holes communicated with the second oil drainage straight holes are formed in the second V-shaped limiting ring groove, and a second sealing ring with the outer diameter smaller than the inner diameter of the piston body and the diameter larger than the second oil drainage side holes is installed in the second V-shaped limiting ring groove.

3. The shock absorber for vehicle having a seal ring type two-way valve according to claim 2, wherein: and a sealing structure is arranged between the middle part of the piston body and the cylinder barrel, the sealing structure comprises an installation groove arranged in the middle part of the piston body, and a third sealing ring is installed in the installation groove.

4. The shock absorber for an automobile having a seal ring type two-way valve according to claim 1 or 2, wherein: the lower plug assembly comprises a lower plug body, an air injection cavity is formed in one end of the lower plug body, an air injection channel is formed in the lower plug body, one end of the air injection channel is communicated with the air injection cavity, the other end of the air injection channel is communicated with the air cavity, and a one-way valve structure is arranged at one end of the air injection channel, which is communicated with the air cavity.

5. The shock absorber with a seal ring type two-way valve for an automobile according to claim 4, wherein: the check valve structure comprises a third limiting seat, wherein the diameter of one end of the bottom of the inner cavity of the cylinder barrel is far away from the lower plug body and is smaller than the lower plug body, a third V-shaped limiting ring groove is formed between the third limiting seat and the lower plug body, and a fourth sealing ring, the outer diameter of which is smaller than the inner diameter of the lower plug body and the diameter of which is larger than the inner diameter of the gas injection channel, is installed in the third V-shaped limiting ring groove.

6. The shock absorber with a seal ring type two-way valve for an automobile according to claim 5, wherein: and a closing groove is formed in the middle of the lower plug body and communicated with the gas injection channel.

7. The shock absorber for vehicle having a seal ring type two-way valve according to claim 6, wherein: and a second sealing structure is arranged between the lower plug body and the cylinder barrel, the second sealing structure comprises at least two second mounting grooves which are arranged at the middle part of the lower plug body at intervals, and a fifth sealing ring is mounted in each second mounting groove.

8. The shock absorber for vehicle having a seal ring type two-way valve according to claim 2, wherein: the cross sectional areas of the first oil drainage straight hole and the second oil drainage straight hole are different, and the cross sectional areas of the second oil drainage side hole and the second oil drainage side hole are different.