CN203656031U - Shock absorber with defoaming bottom valve - Google Patents
Shock absorber with defoaming bottom valve Download PDFInfo
- Publication number
- CN203656031U CN203656031U CN201320714081.2U CN201320714081U CN203656031U CN 203656031 U CN203656031 U CN 203656031U CN 201320714081 U CN201320714081 U CN 201320714081U CN 203656031 U CN203656031 U CN 203656031U
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- China
- Prior art keywords
- bottom valve
- oil
- filter screen
- gas filter
- clutch release
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Abstract
The utility model relates to the technical field of a shock absorber, particularly to a shock absorber with a defoaming bottom valve. The shock absorber comprises an oil storage tank, a working cylinder, a connecting rod, an oil seal guider, a piston assembly, a cushion and a bottom valve assembly, wherein the working cylinder is sleeved in the oil storage tank, the bottom valve assembly is arranged at the bottom end of the working cylinder and is matched and mounted with a bottom cover of the oil storage tank, the oil seal guider is nested and matched at an upper end opening of the working cylinder and the oil storage tank, the piston assembly and the cushion are arranged in the working cylinder, and the inner end of the connecting rod passes through the oil seal guider to be successively connected with the cushion and the piston assembly; an oil gas filter screen is connected to the outer edge of the bottom valve main body. The shock absorber has the advantages that the structure is reasonable and compact, the assembly is fast, the response is sensitive and the reliability is good. Besides, the compensation of damping oil is controlled by the bottom valve through a double-valve sheet, air bubbles can be reduced and filtered by the oil gas filter screen, the oil gas filter screen is matched with the amplitude of a piston to pull the air in the damping oil to float upwards, the air bubbles are prevented from entering the working cylinder to reduce the performance of the damping oil, and the shock reducing performance is improved.
Description
Technical field
The utility model relates to vibration damper technical field, particularly a kind of vibration damper with froth breaking bottom valve.
Background technique
Vibration damper is a kind of device that reduces moving link jerk, the vibration damper using on Motor Vehicle is exactly the irregular vibrations that the injustice on road surface is caused vehicle body, by the damping function of vibration damper, make mechanical energy be converted into heat energy, thereby make vehicle keep under steam good stationarity and riding comfort.The principle of vibration damper and agent structure substantially do not have too large variation after coming out, the aspects such as its more improvement or reinforcement, the lifting of structural reliability and the increase in working life based on to damping effect.
Existing vibration damper generally comprises cylinder body, main piston, damper piston, total drainback passage, main drainback passage, secondary drainback passage, acceleration drainback passage, acceleration pressure release passage, main spring, auxiliary spring, main spring chamber, auxiliary spring chamber and shoe cream room and forms.In cylinder body, one end is provided with main piston, the other end is provided with damper piston, is provided with and accelerates pressure release passage, auxiliary spring and acceleration drainback passage in the main spring chamber between damper piston and main piston.In cylinder body, be provided with two parallel passages, a passage is wherein total drainback passage, and another uses as shoe cream room.In shoe cream room, series connection is provided with main piston and damper piston, and damper piston upper and lower surfaces are all provided with spring.The piston of vibration damper moves around in shoe cream room, produces surface friction drag with the damping oil in shoe cream room, reduces the vibration amplitude of shock-proof spring and car body.The structure relative complex of the main piston of current vibration damper, easily sucks bubble and causes damping force to decline, and then affect vibration damper performance in compression stroke; Therefore, can be by technological improvement to improve the usability of vibration damper.
Model utility content
The purpose of this utility model is for the defect of prior art and deficiency, a kind of compact structure is provided, uses vibration damper stable, that damping effect better has froth breaking bottom valve.
For achieving the above object, the utility model is by the following technical solutions:
A kind of vibration damper with froth breaking bottom valve described in the utility model, comprises oil storage cylinder, clutch release slave cylinder, connecting rod, oil sealing guider, piston assembly, cushion pad and bottom valve assembly; Described clutch release slave cylinder is sheathed in oil storage cylinder, bottom valve assembly is located at clutch release slave cylinder bottom equipped with oil storage cylinder bottom, the nested upper end-hole that is fitted to clutch release slave cylinder and oil storage cylinder of oil sealing guider, piston assembly and cushion pad are located in clutch release slave cylinder, and connecting rod inner end is connected with cushion pad and piston assembly successively through oil sealing guider; Described bottom valve assembly comprises bottom valve body, bottom fastening bolt, T junction, upper valve block and lower valve, T junction is located at bottom valve body top, bottom fastening bolt is spirally connected through bottom valve body and T junction, lower valve is sheathed on the bottom fastening bolt post of bottom valve body below, upper valve block is sheathed on T junction, between upper valve block and T junction, is provided with volute spring; Described bottom valve body upper-end surface and upper valve block overlapping have annular groove one and annular groove two, annular groove one and annular groove two arrange centered by T junction, on the lower end surface of bottom valve body, have the through hole one and the through hole two that connect respectively annular groove one and annular groove two, port and the lower valve of through hole two are overlapping; In the outer rim of described bottom valve body, be connected with oil gas filter screen.
Further, described oil gas filter screen is embedded between clutch release slave cylinder and oil storage cylinder, and oil gas filter screen is provided with supported spring, in the outer rim of bottom valve body, is bolted with fastener, and the foundation ring of supported spring is buckled on fastener.
Further, described oil gas filter screen is formed by close the knitting of some wire cross, and the end face external diameter of oil gas filter screen mates with oil storage cylinder internal diameter, and the end face internal diameter of oil gas filter screen mates with the external diameter of clutch release slave cylinder.
Further, on described upper valve block, corresponding through hole two places have relief hole.
The utility model beneficial effect is: the utility model compactness rational in infrastructure, and bottom valve is by double valve sheet control and compensation damping oil, and the quick response of assembling is sensitive, good reliability; Can reduce and filter bubble by oil gas filter screen, coordinate the air floating pulling in damping oil with piston amplitude, avoid bubble to enter active chamber and reduce damping oil performance, promote damping performance.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
Fig. 2 is oil gas filter structure schematic diagram of the present utility model.
Fig. 3 is bottom valve assembly partial structurtes schematic diagram of the present utility model.
In figure:
10, oil storage cylinder; 11, bonnet; 20, clutch release slave cylinder; 30, connecting rod;
40, oil sealing guider; 50, piston assembly; 60, cushion pad; 70, bottom valve assembly;
71, bottom valve body; 71a, through hole one; 71b, through hole two; 71c, annular groove one;
71d, annular groove two; 72, bottom fastening bolt; 73, T junction; 74, upper valve block;
74a, relief hole; 75, lower valve; 76, tapering spring; 77, fastener;
78, oil gas filter screen; 79, supported spring.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
A kind of vibration damper with froth breaking bottom valve as described in the utility model in Fig. 1, comprises oil storage cylinder 10, clutch release slave cylinder 20, connecting rod 30, oil sealing guider 40, piston assembly 50, cushion pad 60 and bottom valve assembly 70; Described clutch release slave cylinder 20 is sheathed in oil storage cylinder 10, bottom valve assembly 70 is located at clutch release slave cylinder 20 bottoms equipped with oil storage cylinder 10 bottoms 11, the nested upper end-hole that is fitted to clutch release slave cylinder 20 and oil storage cylinder 10 of oil sealing guider 40, piston assembly 50 and cushion pad 60 are located in clutch release slave cylinder 20, and connecting rod 30 inner ends are connected with cushion pad 60 and piston assembly 50 successively through oil sealing guider 40; Clutch release slave cylinder 20 becomes active chamber by oil sealing guider 40 and bottom valve assembly 70 Hou Qi inner spaces, shutoff two ends, oil storage cylinder 10 spaces of clutch release slave cylinder 20 outsides with the relatively independent shoe cream room that becomes of active chamber, between shoe cream room and active chamber, be communicated with by the recuperation valve on bottom valve assembly 70 and oil sealing guider 40; Clutch release slave cylinder 20 is divided into upper and lower two pressure chambers by piston assembly 50, the impact that when cushion pad 60 end faces of oil sealing guider 40 1 sides are provided with spring with counteracting extension stroke, piston assembly 50 moves up.
As shown in Figure 3, bottom valve assembly 70 comprises bottom valve body 71, bottom fastening bolt 72, T junction 73, upper valve block 74 and lower valve 75, T junction 73 is located at bottom valve body 71 tops, bottom fastening bolt 72 is spirally connected through bottom valve body 71 and T junction 73, lower valve 75 is sheathed on bottom fastening bolt 72 posts of bottom valve body 71 belows, upper valve block 74 is sheathed on T junction 73, between upper valve block 74 and T junction 73, is provided with volute spring 76; Described bottom valve body 71 upper-end surfaces and upper valve block 74 overlappings have annular groove one 71c and annular groove two 71d, and annular groove one 71c and annular groove two 71d arrange centered by T junction 73, and on upper valve block 74, corresponding through hole two 71b places have relief hole 74a; On the lower end surface of bottom valve body 71, have through hole one 71a and through hole two 71b that connect respectively annular groove one 71c and annular groove two 71d, port and the lower valve 75 of through hole two 71b are overlapping; Bottom valve assembly is left in vibration damper piston assembly 50 in the time of compression stroke, downforce cavity space increases generation and vacuumizes effect, damping oil in shoe cream room is washed upper valve block 74 open by through hole one 71a, down pressure chamber supplements damping oil, and in extension stroke, downforce cavity space reduces, and the damping oil in chamber is washed lower valve 75 open by through hole two 71b and discharged to shoe cream room, and then makes damping oil produce surface friction drag to piston.
In the outer rim of above-mentioned bottom valve body 71, be connected with oil gas filter screen 78, be bolted with fastener 77 in the outer rim of bottom valve body 71, the foundation ring of supported spring 79 is buckled on fastener 77; Oil gas filter screen 78 is embedded between clutch release slave cylinder 20 and oil storage cylinder 10, oil gas filter screen 78 is provided with supported spring 79, oil gas filter screen 78 is formed by close the knitting of some wire cross, the end face external diameter of oil gas filter screen 78 mates with oil storage cylinder 10 internal diameters, and the end face internal diameter of oil gas filter screen 78 mates with the external diameter of clutch release slave cylinder 20; As shown in Figure 2 and Figure 3, in clutch release slave cylinder 20 outer rims, be arranged with oil gas filter screen 78, oil gas filter screen 78 is provided with supported spring 79, supported spring 79 lower ends are connected with oil storage cylinder 10, oil gas filter screen 78 is formed by close the knitting of some wire cross, the end face external diameter of oil gas filter screen 78 mates with oil storage cylinder 10 internal diameters, and the end face internal diameter of oil gas filter screen 78 mates with the external diameter of clutch release slave cylinder 20, and described oil gas filter screen 78 is highly 1/3rd of oil storage cylinder 10; Oil gas filter screen 78 shrinks with the descending of damping oil in the time that the recuperation valve of bottom valve assembly 70 is opened oil suction, supported spring 79 makes the shrinkage of oil gas filter screen 78 be less than the lower line amplitude of damping oil, damping oil during through oil gas filter screen 78 air by its absorption and then prevent that bubble from entering clutch release slave cylinder 20, recuperation valve cuts out rear support spring 79 and drives oil gas filter screen 78 to stretch, and then the damping oil in oil storage cylinder 10 is carried out to a combing again and filter, drive bubble upwards to float; Supported spring 79 drives the vibration of oil gas filter screen 78 synchronously to carry out with the lifting of piston assembly 50, can effectively reduce the problem that bubble causes damping force to decline.
The above is only preferred embodiments of the present utility model, and the equivalence of doing according to structure, feature and principle described in the utility model patent claim therefore all changes or modifies, and is included in the utility model patent claim.
Claims (4)
1. there is a vibration damper for froth breaking bottom valve, comprise oil storage cylinder (10), clutch release slave cylinder (20), connecting rod (30), oil sealing guider (40), piston assembly (50), cushion pad (60) and bottom valve assembly (70); Described clutch release slave cylinder (20) is sheathed in oil storage cylinder (10), bottom valve assembly (70) is located at clutch release slave cylinder (20) bottom equipped with oil storage cylinder (10) bottom (11), the nested upper end-hole that is fitted to clutch release slave cylinder (20) and oil storage cylinder (10) of oil sealing guider (40), piston assembly (50) and cushion pad (60) are located in clutch release slave cylinder (20), and connecting rod (30) inner end is connected with cushion pad (60) and piston assembly (50) successively through oil sealing guider (40); It is characterized in that: described bottom valve assembly (70) comprises bottom valve body (71), bottom fastening bolt (72), T junction (73), upper valve block (74) and lower valve (75), T junction (73) is located at bottom valve body (71) top, bottom fastening bolt (72) is spirally connected through bottom valve body (71) and T junction (73), lower valve (75) is sheathed on bottom fastening bolt (72) post of bottom valve body (71) below, it is upper that upper valve block (74) is sheathed on T junction (73), between upper valve block (74) and T junction (73), is provided with volute spring (76); Described bottom valve body (71) upper-end surface and upper valve block (74) overlapping have annular groove one (71c) and annular groove two (71d), annular groove one (71c) and annular groove two (71d) arrange centered by T junction (73), on the lower end surface of bottom valve body (71), have the through hole one (71a) and the through hole two (71b) that connect respectively annular groove one (71c) and annular groove two (71d), the port of through hole two (71b) and lower valve (75) are overlapping; In the outer rim of described bottom valve body (71), be connected with oil gas filter screen (78).
2. the vibration damper with froth breaking bottom valve according to claim 1, it is characterized in that: described oil gas filter screen (78) is embedded between clutch release slave cylinder (20) and oil storage cylinder (10), oil gas filter screen (78) is provided with supported spring (79), in the outer rim of bottom valve body (71), be bolted with fastener (77), the foundation ring of supported spring (79) is buckled on fastener (77).
3. the vibration damper with froth breaking bottom valve according to claim 2, it is characterized in that: described oil gas filter screen (78) is formed by close the knitting of some wire cross, the end face external diameter of oil gas filter screen (78) mates with oil storage cylinder (10) internal diameter, and the end face internal diameter of oil gas filter screen (78) mates with the external diameter of clutch release slave cylinder (20).
4. the vibration damper with froth breaking bottom valve according to claim 1, is characterized in that: the upper corresponding through hole two (71b) of described upper valve block (74) locates to have relief hole (74a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320714081.2U CN203656031U (en) | 2013-11-14 | 2013-11-14 | Shock absorber with defoaming bottom valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320714081.2U CN203656031U (en) | 2013-11-14 | 2013-11-14 | Shock absorber with defoaming bottom valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203656031U true CN203656031U (en) | 2014-06-18 |
Family
ID=50922422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320714081.2U Expired - Lifetime CN203656031U (en) | 2013-11-14 | 2013-11-14 | Shock absorber with defoaming bottom valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203656031U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106499767A (en) * | 2016-12-30 | 2017-03-15 | 珠海市业成轨道交通设备科技有限公司 | A kind of bottom valve system of high speed motor car with one-way circulation oil-pressure damper |
| CN117261515A (en) * | 2023-11-22 | 2023-12-22 | 山西佳诚液压有限公司 | Front hydro-pneumatic suspension cylinder of off-highway mining dumper |
-
2013
- 2013-11-14 CN CN201320714081.2U patent/CN203656031U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106499767A (en) * | 2016-12-30 | 2017-03-15 | 珠海市业成轨道交通设备科技有限公司 | A kind of bottom valve system of high speed motor car with one-way circulation oil-pressure damper |
| CN117261515A (en) * | 2023-11-22 | 2023-12-22 | 山西佳诚液压有限公司 | Front hydro-pneumatic suspension cylinder of off-highway mining dumper |
| CN117261515B (en) * | 2023-11-22 | 2024-02-02 | 山西佳诚液压有限公司 | Front hydro-pneumatic suspension cylinder of off-highway mining dumper |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |