CN105673767B - A kind of automatic compensation damping shock absorber - Google Patents
A kind of automatic compensation damping shock absorber Download PDFInfo
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- CN105673767B CN105673767B CN201610148097.XA CN201610148097A CN105673767B CN 105673767 B CN105673767 B CN 105673767B CN 201610148097 A CN201610148097 A CN 201610148097A CN 105673767 B CN105673767 B CN 105673767B
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- hole
- rotating pin
- piston
- fluid
- shock absorber
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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
- F16F9/32—Details
- F16F9/50—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
- F16F9/52—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics in case of change of temperature
- F16F9/523—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics in case of change of temperature with coil or spiral of bimetallic elements being used to change flow cross-section
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The present invention relates to a kind of damper of automatic compensation damping function, including guider, oil storage cylinder, working cylinder, piston rod, piston valve component and pedestal valve block component；Piston-rod lower end center has a long blind hole, on piston rod side wall there is a fluid through-hole to be connected with long blind hole；A rotating pin and a thermo bimetal are further included, the rotating pin is located in long blind hole, and the center of rotating pin has an oil passage, has a compensation hole to communicate therewith on side wall；The thermo bimetal is helical structure, and one end is fixed on rotating pin, and the other end is fixed on piston valve component.When oil liquid temperature changes, damping force can automatically derive adjusting according to the moving situation of piston, and the handling and comfort for making vehicle is more reasonable, and this is simple in structure, effect is good.
Description
Technical field
The invention belongs to auto parts fields, and in particular to a kind of damper of automatic compensation damping function.
Background technology
Vibration insulating system is often used in the overexercise prevented in mechanical system.Such vibration insulating system main element is subtracts
Shake device (or fluid shock absorber), and damper is the main damping element for forming vehicle suspension system, and the quality of performance is directly
Influence comfort, control stability and the safety of automobile.It generally includes two kinds of dampers, and one kind is to include piston and fill
It is marked with the cylinder of fluid.The damper includes guider 8, oil storage cylinder 9, working cylinder 10, piston rod 11,6 and of piston valve component
Pedestal valve block component 12；The piston valve component 6 is fixed on the lower end of piston rod 11, is nested in inside working cylinder 10, will
It is divided into epicoele and cavity of resorption；The working cylinder 10 is placed in oil storage cylinder 9, is shoe cream room between working cylinder 10 and oil storage cylinder 9, work
10 lower end of cylinder is equipped with pedestal valve block component 12；The guider 8 is installed on the upper end of working cylinder 10；Fluid in cylinder with
It offsets the relative motion between piston and cylinder around the aperture that piston is mobile or is moved through in piston.This type
Shock absorber mechanical energy and be converted into thermal energy and diffuse away.Also a kind of common vibration insulating system relies on elastomer
Element is by shearing deformation and propagation energy.Fluid shock absorber usually has higher damping property relative to elastomer damper
Can, but it is more sensitive to temperature.
The damper of existing market is mostly fluid shock absorber, it is impossible to is adjusted correspondingly according to the variation of environment, vibration damping
Fluid variation with temperature viscosity in device can generate larger variation, such as averagely have 35 DEG C in Guangzhou during Summer temperature, and breathe out
The temperature in winter of your shore is -25 DEG C, and damper damps force value caused by the variation of oil viscosity and larger change occurs, from
And influence the handling and comfort of vehicle.
Invention content
In view of the above-mentioned problems, offer is a kind of simple in structure, the damper with automatic compensation damping function utilizes the present invention
In temperature change, compression-expansion changes the circulation area of fluid, adjusts thermo bimetal so as to the principle that rotating pin is driven to rotate
Save damping force, and then compensate due to gradient of temperature cause absorber damping force change difference, improve vehicle it is handling with it is easypro
Adaptive.
To solve the above problems, the invention is realized by the following technical scheme：
A kind of automatic compensation damping shock absorber disclosed by the invention, piston-rod lower end center has a long blind hole, in piston
On bar side wall there is a fluid through-hole to be connected with long blind hole.
A rotating pin and a thermo bimetal are further included, the rotating pin is located in long blind hole, the center of rotating pin
With an oil passage, there is a compensation hole to communicate therewith on side wall；The thermo bimetal is helical structure, and one end, which is fixed on, to be turned
On dynamic axis pin, the other end is fixed on piston valve component.
A kind of automatic compensation damping shock absorber as described above, illustrates further as the lower end of the rotating pin is opened
There is a groove, one end of thermo bimetal is secured to by being stuck in groove.
When oil liquid temperature changes, thermo bimetal can occur to deform accordingly, for example when oil liquid temperature increases, lead to oil
Fluid viscosity reduces, and so as to which damping force reduces, at this moment thermo bimetal rotates clockwise, and rotating pin is driven to rotate together, makes rotation
It compensates the oil intersection of fluid through-hole of hole and piston rod on axis pin to reduce, circulation area reduces, and damping force increases.
A kind of automatic compensation damping shock absorber as described above, illustrates further as between rotating pin and long blind hole
Gap be 0.1-1 ㎜.
A kind of automatic compensation damping shock absorber as described above, illustrates further as the diameter in the compensation hole 7 is less than
The diameter of fluid through-hole.
A kind of automatic compensation damping shock absorber as described above, illustrates further as thermo bimetal periphery is straight
Diameter is 15-25 ㎜, and thickness is 5-10 ㎜.
A kind of automatic compensation damping shock absorber as described above, illustrates further as the rotating pin is a diameter of
5-10 ㎜, length are 40-70 ㎜.
The beneficial effects of the present invention are：When damper is under the conditions of Different climate or different operating, vibration damping
Device damping force can change circulation area automatically by oil liquid temperature, reach automatic benefit with the different and different of oil liquid temperature
Repay the purpose of damping force.It avoids conventional damper damping force and is affected by temperature larger, cause the handling and comfort of vehicle
The unreasonable characteristic of large change is generated due to the variation of temperature.It can be seen that the present invention can be changed in existing damper
Into simple in structure, effect is good.
Description of the drawings
Fig. 1 is overall structure diagram of the present invention.
Fig. 2 is inventive piston bar lower end structure schematic diagram.
Fig. 3 is rotating pin structure diagram of the present invention.
Fig. 4 is inventive piston bar bottom view.
Fig. 5 is compensation hole and fluid through-hole structure schematic diagram in the present invention.
In figure, 1, long blind hole；2nd, oil passage；3rd, fluid through-hole；4th, rotating pin；5th, thermo bimetal；6th, piston valve
Component；7th, hole is compensated；8th, guider；9th, oil storage cylinder；10th, working cylinder；11st, piston rod；12nd, pedestal valve block component.
Specific embodiment
The specific embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings.
As shown in Figure 1, the automatic compensation damping shock absorber of one kind of the present invention, including guider 8, oil storage cylinder 9, working cylinder
10th, piston rod 11, piston valve component 6 and pedestal valve block component 12；The piston valve component 6 is fixed on piston rod 11
Lower end is nested in inside working cylinder 10, is divided into epicoele and cavity of resorption；The working cylinder 10 is placed in oil storage cylinder 9, working cylinder 10
It is shoe cream room between oil storage cylinder 9,10 lower end of working cylinder is equipped with pedestal valve block component 12；The guider 8 is installed on work
The upper end of cylinder 10.
When piston rod 11 moves downward, piston rod 11 is gradually stretched into working cylinder 10, and piston rod 11 is to pedestal valve block group
Part 12 moves, the increase of epicoele volume, cavity of resorption volume reducing, and the part fluid in cavity of resorption is forced to discharge.Fluid in cavity of resorption flows through
Piston valve component 6, flows in epicoele, due to stretching into for piston rod 11, increases its volume in working cylinder 10, makes cavity of resorption
The extra oil mass flowed into epicoele of oil mass of middle discharge, at this moment some fluid is flowed to through pedestal valve block component 12 in cavity of resorption
In oil storage cylinder 9；When piston rod 11 moves upwards, the oil flows through piston valve block component 6 in epicoele is flowed in cavity of resorption, oil storage
Fluid in cylinder 9 flows through pedestal valve block component 12, flows in cavity of resorption.
As shown in Fig. 2, 11 lower end center of piston rod has a long blind hole 1, on 11 side wall of piston rod there is a fluid to lead to
Hole 3 is connected with long blind hole 1.The position of fluid through-hole 3 be located at 1 top of long blind hole slightly under position, preferred embodiment is, positioned at top
Lower 5 ㎜.It is fixed that the quantity of long blind hole 1 is not limited, and preferred embodiment is 1.
As shown in Figure 1, further including a rotating pin 4 and a thermo bimetal 5, the rotating pin 4 is located in long blind hole 1,
The length of long blind hole is 40-70 ㎜, and preferred embodiment is 50 ㎜.Rotating pin 4 can be revolved as the deformation of thermo bimetal 5 rotates
Turn；Gap between rotating pin 4 and long blind hole 1 is 0.1-1 ㎜, and preferred embodiment is 0.5 ㎜.4 a diameter of 5-10 of rotating pin
㎜, length are 40-70 ㎜, and preferred embodiment is 6 ㎜ of diameter, and length is 50 ㎜.
As shown in figure 3, the center of rotating pin 4 has an oil passage 2, there is a compensation hole 7 to communicate therewith on side wall, mend
The position for repaying hole 7 is located at the top of oil passage 2, and the diameter in compensation hole 7 is less than the diameter of fluid through-hole 3, in normal temperature
(both oil liquid temperature be 25 ° when), compensates hole 7 and fluid through-hole 3 partially overlaps part；It is recessed that the lower end of rotating pin 4 is provided with one
Slot, the width of groove are equal to the thickness of thermo bimetal, and the height of groove is equal to the height of thermo bimetal 5, and when installation will the double gold of heat
One end of category, inserts in groove, is allowed to be fixedly connected, and can also by welding fix in a groove.
As shown in figure 4, thermo bimetal 5 is helical structure, one end is fixed on rotating pin 4, and the other end is fixed on piston
On valve block component 15.5 peripheral diameter of thermo bimetal be 15-25 ㎜, thickness be 5-10 ㎜, preferred embodiment be 20 ㎜ of diameter, thickness
For 8 ㎜.One end of thermo bimetal 5 is secured to by being stuck in groove, and the other end is fixed on piston valve component 6, preferably
Scheme is is welded to connect.The metal or alloy that the material of thermo bimetal 5 has different heat expansion coefficient by two layers is combined into.Heat
A constituent element layer in bimetallic 5 has low coefficient of thermal expansion, is passive layer；Another constituent element layer has high coefficient of thermal expansion,
For active layers.Passive layer is used containing Ni34~50% because of tile-type alloy；Active layers are then using brass, nickel, Fe-Ni-Cr, Fe-
One kind in Ni-Mn and Mn-Ni-Cu alloys.For example model is using 5J1380, since thermo bimetal can allow the direct basis of producer
Damper use is different and customized, so not limiting here.
Under room temperature working environment, both oil temperature is 25 °, and when thermo bimetal 5 is normal condition, when installation adjusts good position,
Rotating pin 4 is made to be located in long blind hole 1, the fluid through-hole 3 on compensation hole 7 and piston rod 11 on rotating pin 4 has part weight
Part is closed, as shown in figure 5, intersection is fluid circulation area.At this moment piston is when moving up and down, the oil in working cylinder 10
Liquid not only adjusts the fluid in epicoele and cavity of resorption by piston valve component 6, has part fluid also can be by rotating pin 4
Oil passage 2, make fluid flow through compensation hole 7 and fluid through-hole 3 intersection.At this moment circulation area be intermediate value, damping force
It is identical with standard value.
Can be that environment temperature leads to oil liquid temperature raising can also to be that run duration is long lead when oil liquid temperature increases
Temperature raising is caused, because oil liquid temperature increases, oil viscosity reduces, and damping force is caused to reduce, at this moment piston rod is moving up and down
When, damping force is less than standard value, and the handling and comfort for causing vehicle is unreasonable, since present invention employs hot double gold
Belong to, when oil temperature increases, as shown in figure 4, thermo bimetal 5 can rotate clockwise, rotating pin 4 is driven to rotate together, makes compensation
The intersection area of hole 7 and fluid through-hole 3 reduces, and at this moment can increase the damping force of damper, make what is reduced by high oil temperature
Part damping force is compensated, and makes damping force identical with mark value.
When oil liquid temperature reduces, because oil liquid temperature reduces, oil viscosity increase causes damping force to increase, at this moment lives
For stopper rod when moving up and down, damping force is greater than standard value, the thermo bimetal used by the present invention, when oil temperature reduces, such as
Shown in Fig. 4, thermo bimetal 5 can rotate counterclockwise, and rotating pin 4 is driven to rotate together, makes the weight of compensation hole 7 and fluid through-hole 3
Area increase is closed, at this moment can reduce the damping force of damper, makes to reduce because of the too low increased part damping force of oil temperature, make
Damping force is identical with mark value.Enhance the handling and comfort of vehicle, it is simple in structure, effect is good.
It should be noted that embodiment of the present invention is only its preferred embodiment, to belonging to the entirety of the present invention
Design, and be only obvious change, be within the scope of protection of the invention within.
Claims (4)
1. a kind of automatic compensation damping shock absorber, it is characterised in that：Piston rod (11) lower end center has a long blind hole (1),
On piston rod side wall there is a fluid through-hole (3) to be connected with long blind hole (1)；
A rotating pin (4) and a thermo bimetal (5) are further included, the rotating pin (4) is in long blind hole (1), rotational pin
The center of axis has an oil passage (2), has a compensation hole (7) to communicate therewith on side wall；The thermo bimetal (5) is spiral
Structure, one end are fixed on rotating pin (4), and the other end is fixed on piston valve component (6), the rotating pin (4)
Lower end is provided with a groove, and one end of thermo bimetal (5) is secured to by being stuck in groove, and the diameter of compensation hole (7) is small
Diameter in fluid through-hole (3).
2. a kind of automatic compensation damping shock absorber according to claim 1, it is characterised in that：Rotating pin (4) and length are blind
Gap between hole (1) is 0.1-1 ㎜.
3. a kind of automatic compensation damping shock absorber according to claim 1, it is characterised in that：The thermo bimetal (5)
Peripheral diameter is 15-25 ㎜, and thickness is 5-10 ㎜.
4. a kind of automatic compensation damping shock absorber according to claim 1, it is characterised in that：The rotating pin diameter
For 5-10 ㎜, length is 40-70 ㎜.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2015108236568 | 2015-11-23 | ||
| CN201510823656 | 2015-11-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105673767A CN105673767A (en) | 2016-06-15 |
| CN105673767B true CN105673767B (en) | 2018-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610148097.XA Active CN105673767B (en) | 2015-11-23 | 2016-03-15 | A kind of automatic compensation damping shock absorber |
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| Country | Link |
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| CN (1) | CN105673767B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2723765Y (en) * | 2004-09-09 | 2005-09-07 | 陆杰 | Double oil cylinder variable damping rear damper |
| CN104632979A (en) * | 2015-02-02 | 2015-05-20 | 江苏大学 | Adjustable damping shock absorber |
| CN205533980U (en) * | 2016-01-13 | 2016-08-31 | 成都九鼎科技(集团)有限公司 | Automatic compensation damping shock absorber |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS608538A (en) * | 1983-06-25 | 1985-01-17 | Atsugi Motor Parts Co Ltd | Hydraulic draft gear with oil temperature compensating mechanism |
-
2016
- 2016-03-15 CN CN201610148097.XA patent/CN105673767B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2723765Y (en) * | 2004-09-09 | 2005-09-07 | 陆杰 | Double oil cylinder variable damping rear damper |
| CN104632979A (en) * | 2015-02-02 | 2015-05-20 | 江苏大学 | Adjustable damping shock absorber |
| CN205533980U (en) * | 2016-01-13 | 2016-08-31 | 成都九鼎科技(集团)有限公司 | Automatic compensation damping shock absorber |
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| Publication number | Publication date |
|---|---|
| CN105673767A (en) | 2016-06-15 |
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