CN109322959B - Shock absorber - Google Patents
Shock absorber Download PDFInfo
- Publication number
- CN109322959B CN109322959B CN201811337552.6A CN201811337552A CN109322959B CN 109322959 B CN109322959 B CN 109322959B CN 201811337552 A CN201811337552 A CN 201811337552A CN 109322959 B CN109322959 B CN 109322959B
- Authority
- CN
- China
- Prior art keywords
- piston
- inner cylinder
- assembly
- hole
- shock absorber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000035939 shock Effects 0.000 title claims abstract description 30
- 239000006096 absorbing agent Substances 0.000 title claims abstract description 27
- 238000013016 damping Methods 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 238000000926 separation method Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 8
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000004064 recycling Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/06—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
- F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3235—Constructional features of cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/36—Special sealings, including sealings or guides for piston-rods
- F16F9/362—Combination of sealing and guide arrangements for piston rods
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention provides a shock absorber, which comprises a shell, damping medium, a piston assembly, a interception device, an upper end cover and a sealing assembly, wherein the shell comprises an inner cylinder and an outer cylinder assembly, the damping medium is arranged in the inner cylinder, the piston assembly comprises a piston and a piston rod, the piston is arranged in the inner cylinder, the inner cylinder is divided into an upper cavity and a lower cavity by the piston, a first through hole is formed in the piston, a second through hole is formed in the interception device, a third through hole and a fourth through hole are formed between the second through hole and the upper cavity, the upper end cover is arranged at the upper end of the shell to seal an upper end opening of the outer cylinder assembly, and the sealing assembly comprises an oil seal and a guide. The invention provides a shock absorber which is simple in production process, convenient to detach, good in sealing performance, good in shock absorption effect and not easy to deform.
Description
Technical Field
The invention relates to the technical field of automobile parts, which is mainly used for damping an automobile.
Background
The shock absorber is generally used on the automobile to avoid too large vibration generated in the running process of the automobile, the shock absorber cylinder body in the related art is of an integral structure, parts cannot be detached or damaged after detachment, recycling value is avoided, the structure of the interception device is too complex, and durability is poor. In addition, the cylinder body deforms after welding the spring plate and other parts, so that the single-cylinder structure cannot be designed. With a single oil seal, leakage is likely to occur.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the shock absorber which is simple in production process, convenient to detach, good in sealing performance, good in shock absorption effect and not easy to deform.
In order to achieve the aim of the invention, the invention adopts the following technical scheme:
the utility model provides a bumper shock absorber, includes casing, damping medium, piston assembly, trapping device, upper end cover and seal assembly, its characterized in that: the shell comprises an inner cylinder and an outer cylinder assembly, openings are formed in two ends of the outer cylinder assembly, the outer cylinder assembly is sleeved on the outer portion of the inner cylinder, an opening is formed in the upper end of the inner cylinder assembly, damping media are arranged in the inner cylinder, the piston assembly comprises a piston and a piston rod, the piston is arranged in the inner cylinder, the inner cylinder is divided into an upper cavity and a lower cavity by the piston, a first through hole is formed in the piston, the first through hole is communicated with the upper cavity and the lower cavity, the piston rod is arranged at the upper end of the piston, a intercepting device is arranged between the piston rod and the piston, a second through hole is formed in the intercepting device, the second through hole is communicated with the upper cavity and the lower cavity, a third through hole and a fourth through hole are formed between the second through hole and the upper cavity, the upper end cover is arranged at the upper end of the shell so as to seal the upper end opening of the outer cylinder assembly, an avoidance hole is formed in the upper end cover so as to allow the piston rod to pass through, the sealing assembly comprises a guide and a guide, and the guide is arranged between the guide and the shell.
The beneficial effects of the invention are as follows:
The invention has simple integral structure, can prevent the cylinder body from deforming by separately manufacturing the inner cylinder and the outer cylinder assembly and then assembling, is beneficial to design and production of the single-cylinder shock absorber, is beneficial to recycling the shock absorber after being damaged by the detachable connection of the upper end cover and the shell, can enhance the sealing effect by the sealing assembly, ensures that the shock absorber is more reliable, and has simple and convenient processing, higher precision and better shock absorbing effect by the interception device.
As an improvement, the upper end cover is in threaded connection with the outer cylinder assembly, the spiral structure is simple in production process, low in production cost and stable in connection structure.
As an improvement, the outer cylinder assembly comprises an outer cylinder, a spring and a bracket, and the outer cylinder and the spring are connected with the bracket, so that the shock absorber is convenient to install in a working position.
As an improvement, the shock absorber further comprises an inflation valve, the inflation valve is arranged at the lower end of the inner cylinder, and the shock absorber can be pressurized and decompressed according to requirements through the inflation valve, so that the flexibility is high.
As an improvement, the inner cylinder and the outer cylinder assembly are welded, the welded connection mode is simple, and the connection stability of the inner cylinder and the outer cylinder assembly after welding is good.
As an improvement, the damping medium is at least one of pure oil, pure gas, oil-gas separation or oil-liquid mixture, and the pure oil, the pure gas, the oil-gas separation and the oil-liquid mixture can have better buffering effect in the inner cylinder, and the material is easy to obtain.
As an improvement, a sealing ring is arranged between the piston rod and the guide, so that the sealing effect in the shock absorber can be further ensured.
As an improvement, the lower end of the piston rod is provided with an external thread, the piston rod is fixed on the piston through a nut, namely, the piston is limited between the piston rod and the nut through the cooperation of the nut and the external thread, and the assembly and the disassembly are convenient.
Drawings
FIG. 1 is a schematic diagram of a piston of the present invention in a stretched configuration;
FIG. 2 is a schematic view of the piston of the present invention when depressed;
Fig. 3 is an enlarged view of the structure of the portion a in fig. 2;
FIG. 4 is a schematic view of the outer cylinder assembly of the present invention;
FIG. 5 is a schematic view of the structure of the inner cylinder of the present invention;
fig. 6 is an exploded view of the structure of the present invention.
Reference numeral control table:
1-shell, 11-inner cylinder, 111-upper cavity, 112-lower cavity, 12-outer cylinder assembly,
2-Piston assembly, 21-piston, 211, first through hole, 22-piston rod,
3-Entrapping device, 31-second through hole, 32-third through hole, 33-fourth through hole,
4-Upper end cover, 41-avoiding hole,
5-Seal assembly, 51-oil seal, 52-guide, 521-guide hole,
And 6, an inflation valve.
Detailed Description
Specific embodiments of the present invention will be further described below with reference to the accompanying drawings. Wherein like parts are designated by like reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.
In order to make the contents of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in fig. 1 to 6, a shock absorber includes a housing 1, a damping medium, a piston assembly 2, a retaining device 3, an upper end cap 4, and a seal assembly 5, wherein: the casing 1 comprises an inner cylinder 11 and an outer cylinder assembly 12, openings are formed in two ends of the outer cylinder assembly 12, the outer cylinder assembly 12 is sleeved outside the inner cylinder 11, an opening is formed in the upper end of the inner cylinder 11 assembly, damping medium is arranged in the inner cylinder 11, the piston assembly 2 comprises a piston 21 and a piston rod 22, the piston 21 is arranged inside the inner cylinder 11, the piston 21 divides the inner cylinder 11 into an upper cavity 111 and a lower cavity 112, a first through hole 211 is formed in the piston 21, the first through hole 211 is communicated with the upper cavity 111 and the lower cavity 112, the piston rod 22 is arranged at the upper end of the piston 21, a retaining device 3 is arranged between the piston rod 22 and the piston 21, a second through hole 31 is arranged in the retaining device 3, the second through hole 31 is communicated with the upper cavity 111 and the lower cavity 112, a third through hole 32 and a fourth through hole 33 are formed between the second through hole 31 and the upper cavity 111, an end cover 4 is arranged at least in the upper end cover 1 and is provided with a guide sleeve 52, and the guide sleeve 52 is arranged at the end cover 1 and the guide sleeve 52 is provided at the end of the guide sleeve 52, and the guide sleeve 52 is arranged at the end cover 52.
The upper end cover 4 is in threaded connection with the outer cylinder assembly 12.
The outer cylinder assembly 12 includes an outer cylinder, a spring, and a bracket.
And the device also comprises an air charging valve 6, wherein the air charging valve 6 is arranged at the lower end of the inner cylinder 11.
The inner cylinder 11 and the outer cylinder assembly 12 are welded.
The damping medium is at least one of pure oil, pure gas, oil-gas separation or oil-liquid mixture.
A sealing ring is arranged between the piston rod 22 and the guide 52.
The lower end of the piston rod 22 is provided with an external thread, and the piston rod 22 is fixed on the piston 21 through a nut.
The device can be with interior jar 11 and outer jar subassembly 12 separately production in the production process, then connects through welded mode, and the effectual of connection is difficult to take place to warp, and the upper and lower both ends with outer jar subassembly 12 are the opening here, make things convenient for interior jar 11 to insert in the outer jar subassembly 12. The upper end of the inner cylinder 11 is provided with an opening, so that the piston 21 and the piston rod 22 can be inserted into the inner cylinder 11 through the opening at the upper end of the inner cylinder 11, the inner part of the inner cylinder 11 is divided into an upper cavity 111 and a lower cavity 112, the upper cavity 111 and the lower cavity 112 are communicated through a first through hole 211 and a fourth through hole 33, when the piston 21 is pressed down, damping medium can enter the upper cavity 111 through the first through hole 211 and a second through hole 31, the movement speed of the piston 21 is slowed down, when the piston 21 returns to the restoring position, the damping medium in the upper cavity 111 closes the retaining device 3 through a third through hole 32 and the fourth through hole 33, so that the damping medium in the upper cavity 111 enters the lower cavity 112 through the first through hole 211, the movement speed of the piston 21 is slowed down again, the speed of the piston 21 is slowed down repeatedly, the purpose of damping is achieved, and the damping effect is good.
The upper end of the shell 1 is provided with an opening, the opening is closed by the upper end cover 4, the upper end cover 4 and the shell 1 can be connected in a threaded manner, or in a screwed or snap connection manner, the upper end cover 4 and the shell 1 can be disassembled and assembled, or in other connection manners, and the connection is not limited herein.
The air charging valve 6 is arranged at the lower end of the inner cylinder 11, so that the air pressure in the inner cylinder 11 can be conveniently pressurized or depressurized, and the air charging valve 6 can be separated from the inner cylinder 11 to be produced and then is connected through welding, thus the production process and the processing difficulty of the inner cylinder 11 can be reduced, and the production cost is saved. Of course, the air charge valve 6 may be provided at any position of the inner cylinder 11, for example, the outer side wall of the inner cylinder 11, or the upper end of the inner cylinder 11, without limitation.
The damping medium can be preferably pure gas, for example, compared with pure oil as the damping medium, four shock absorbers are arranged on one vehicle, and 350ml of oil is arranged in each shock absorber, so that about 25200 tons of oil can be saved for 1800 ten thousand trolleys, and oil resources are greatly saved.
When the damping medium is in an oil-gas separation state, three chambers need to be separated in the inner cylinder 11, so that oil and gas can be respectively arranged in one chamber, and then the oil and gas can be separated through the transition of the middle chamber. Of course, the inner cylinder 11 may also divide the inner cylinder 11 into different chambers according to the specific implementation or other reasons such as use condition, which is not limited herein.
The interception device 3 is arranged between the piston rod 22 and the piston 21, so that the processing technology can be simplified, the precision is easy to control, and the cost is saved.
The oil seal 51 is provided with at least two, that is, the oil seal 51 may be provided with two or more, thereby further enhancing the sealing effect and improving the sealing reliability of the shock absorber.
It can be appreciated that the damper according to the embodiment of the present invention is applicable to any cylinder type damper, and can achieve a good damping effect.
The above description is illustrative of the preferred embodiments of the present invention and is not intended to limit the scope of the present invention, but is to be accorded the full scope of the claims.
Claims (8)
1. The utility model provides a bumper shock absorber, includes casing (1), damping medium, piston assembly (2), trapping device (3), upper end cover (4) and seal assembly (5), its characterized in that: the shell (1) comprises an inner cylinder (11) and an outer cylinder assembly (12), openings are formed in two ends of the outer cylinder assembly (12), the outer cylinder assembly (12) is sleeved outside the inner cylinder (11), the upper end of the inner cylinder (11) is provided with an opening, damping medium is arranged in the inner cylinder (11), the piston assembly (2) comprises a piston (21) and a piston rod (22), the piston (21) is arranged inside the inner cylinder (11), the piston (21) divides the inner cylinder (11) into an upper cavity (111) and a lower cavity (112), a first through hole (211) is formed in the piston (21), the first through hole (211) is communicated with the upper cavity (111) and the lower cavity (112), the piston rod (22) is arranged at the upper end of the piston (21), a retaining device (3) is arranged between the piston (22) and the piston (21), a second through hole (31) is formed in the retaining device (3), a second through hole (31) is formed in the second through hole (31) and is communicated with the upper cavity (31) and the lower cavity (112), the upper end cover (4) is arranged at the upper end of the shell (1) to seal the upper end opening of the outer cylinder assembly (12), an avoidance hole (41) is formed in the upper end cover (4) to allow the piston rod (22) to pass through, the sealing assembly (5) comprises an oil seal (51) and a guide (52), the oil seal (51) is arranged between the shell (1) and the guide (52), at least two oil seals (51) are arranged, and guide holes (521) are formed in the guide (52).
2. The shock absorber according to claim 1, wherein: the upper end cover (4) is in threaded connection with the outer cylinder assembly (12).
3. The shock absorber according to claim 1, wherein the outer cylinder assembly (12) comprises an outer cylinder, a spring and a bracket.
4. The shock absorber according to claim 1, further comprising an air charge valve (6), said air charge valve (6) being provided at a lower end of said inner cylinder (11).
5. The shock absorber according to claim 1, wherein the inner cylinder (11) and the outer cylinder assembly (12) are welded.
6. The shock absorber of claim 1 wherein said damping medium is at least one of pure oil, pure gas, oil-gas separation, or oil-liquid mixing.
7. The shock absorber according to claim 1, wherein a sealing ring is provided between the piston rod (22) and the guide (52).
8. A shock absorber according to claim 1, wherein the lower end of the piston rod (22) is provided with an external thread, the piston rod (22) being secured to the piston (21) by means of a nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811337552.6A CN109322959B (en) | 2018-11-12 | 2018-11-12 | Shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811337552.6A CN109322959B (en) | 2018-11-12 | 2018-11-12 | Shock absorber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109322959A CN109322959A (en) | 2019-02-12 |
| CN109322959B true CN109322959B (en) | 2024-06-04 |
Family
ID=65261452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811337552.6A Active CN109322959B (en) | 2018-11-12 | 2018-11-12 | Shock absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109322959B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB458311A (en) * | 1935-06-21 | 1936-12-17 | Tecalemit Ltd | Improvements in or relating to shock absorbers or vibration dampers |
| DE3330205A1 (en) * | 1983-08-20 | 1985-03-07 | Günther 6940 Weinheim Obstfelder | Self-adjusting shock absorber, especially for motor vehicles |
| CN101178107A (en) * | 2007-12-05 | 2008-05-14 | 郭孔辉 | Load bearing type damping changing impact damper |
| CN201818696U (en) * | 2010-10-28 | 2011-05-04 | 广州大学 | Single piston rod viscous damper capable of setting initial stiffness |
| CN203488620U (en) * | 2013-08-06 | 2014-03-19 | 宁波金城减震器有限公司 | Automobile shock absorber for enhancing stability |
| CN105041944A (en) * | 2015-06-23 | 2015-11-11 | 李华良 | Automobile damper |
| CN106402241A (en) * | 2016-12-15 | 2017-02-15 | 付德海 | Air-pressure damping vibration absorber |
| CN107420473A (en) * | 2017-09-19 | 2017-12-01 | 丁蒙蒙 | A kind of automobile absorber |
| CN209100542U (en) * | 2018-11-12 | 2019-07-12 | 袁晓斌 | A kind of damper |
-
2018
- 2018-11-12 CN CN201811337552.6A patent/CN109322959B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB458311A (en) * | 1935-06-21 | 1936-12-17 | Tecalemit Ltd | Improvements in or relating to shock absorbers or vibration dampers |
| DE3330205A1 (en) * | 1983-08-20 | 1985-03-07 | Günther 6940 Weinheim Obstfelder | Self-adjusting shock absorber, especially for motor vehicles |
| CN101178107A (en) * | 2007-12-05 | 2008-05-14 | 郭孔辉 | Load bearing type damping changing impact damper |
| CN201818696U (en) * | 2010-10-28 | 2011-05-04 | 广州大学 | Single piston rod viscous damper capable of setting initial stiffness |
| CN203488620U (en) * | 2013-08-06 | 2014-03-19 | 宁波金城减震器有限公司 | Automobile shock absorber for enhancing stability |
| CN105041944A (en) * | 2015-06-23 | 2015-11-11 | 李华良 | Automobile damper |
| CN106402241A (en) * | 2016-12-15 | 2017-02-15 | 付德海 | Air-pressure damping vibration absorber |
| CN107420473A (en) * | 2017-09-19 | 2017-12-01 | 丁蒙蒙 | A kind of automobile absorber |
| CN209100542U (en) * | 2018-11-12 | 2019-07-12 | 袁晓斌 | A kind of damper |
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| Publication number | Publication date |
|---|---|
| CN109322959A (en) | 2019-02-12 |
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