CN208221458U - A kind of piston rod throttle type daming piston - Google Patents
A kind of piston rod throttle type daming piston Download PDFInfo
- Publication number
- CN208221458U CN208221458U CN201820626123.XU CN201820626123U CN208221458U CN 208221458 U CN208221458 U CN 208221458U CN 201820626123 U CN201820626123 U CN 201820626123U CN 208221458 U CN208221458 U CN 208221458U
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- CN
- China
- Prior art keywords
- piston
- valve block
- piston rod
- daming
- restriction portion
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Abstract
A kind of piston rod throttle type daming piston belongs to automobile hydraulic cushion technique field.Including piston cylinder (2), it is provided in piston cylinder (2) and drives mobile piston only (7) by piston rod (1), it is characterized by: the piston rod (1) passes through piston only (7) and fixes, at least two panels valve block (4) is set in piston rod (1) outer ring；Restriction portion (8) corresponding with valve block (4) is also provided on piston rod (1), valve block (4) cooperatively forms the circulation passage of hydraulic oil with the restriction portion of corresponding side (8) respectively, and the circulation area of circulation passage is sequentially reduced along valve block (4) by the direction of hydraulic sliding.In this piston rod throttle type daming piston, by setting valve block and restriction portion, the circulation area that circulation passage may be implemented after valve block is pressurized movement is gradually reduced, therefore is avoided piston only and instantaneously significantly moved, and plays limitation to damping effect.
Description
Technical field
A kind of piston rod throttle type daming piston belongs to automobile hydraulic cushion technique field.
Background technique
Hydraulic shock-absorption is a kind of common damping modes of automotive field.In the output end and ontology point of automobile hydraulic shock-damping device
It is not mounted on vehicle body and wheel set, shock absorber piston is typically provided in automobile absorber, when automobile is in driving process
In when there is vertical tremor, piston moves back and forth in piston cylinder, valve block mechanism is provided in piston, therefore work as piston reciprocating
When movement, the hydraulic oil positioned at piston two sides can back and forth flow through work by the flowing hole on piston with the direction opposite with piston
Plug, to play cushioning effect.
In the prior art, the movement speed of piston is directly proportional to the vibration amplitude degree of automobile in automobile absorber, i.e.,
The vibration amplitude of automobile is bigger, and the speed of reciprocating motion of the pistons is faster, and the speed for the piston that hydraulic oil flows through is also faster.However vapour
Vehicle will appear the case where vibration mutation in the process of moving, as wheel touches biggish barrier or wheel precepitates into hole
In, when above situation occurs, become larger rapidly in the spacing short time between vehicle body and wheel set, therefore in this case
Piston still carries out damping adjusting according to the shock conditions of vehicle body, then is easy to will appear the spacing between wheel set and vehicle body
Suddenly change and so that automobile is damaged, in the prior art, by electric-control system may be implemented the pressure short time variation very
The effect that the flow of hydraulic oil is controlled when big, but electric-control system price is costly and control process is complex.
Therefore designing one kind, flow will slowly increase after pressure increases to certain value or flow remains unchanged, the vapour even reduced
Vehicle hydraulic damper becomes current urgent problem to be solved.
Summary of the invention
Technical problem to be solved by the utility model is: overcoming the deficiencies of the prior art and provide a kind of by setting valve block
And restriction portion, the circulation area that circulation passage may be implemented after valve block is pressurized movement is gradually reduced, therefore avoids piston
Ontology instantaneously significantly moves, and the piston rod throttle type daming piston of limitation is played to damping effect.
The technical scheme adopted by the utility model to solve the technical problem is as follows: the piston rod throttle type daming piston, packet
The piston cylinder being full of by hydraulic oil is included, piston only is provided in piston cylinder, piston rod one end connects piston only, and the other end is certainly
Piston cylinder port is drawn, and piston rod drives piston only to move back and forth in piston cylinder, it is characterised in that: the piston rod is worn
Cross piston only and fixation, piston rod outer ring be set with by after hydraulic along piston rod at least a piece of valve block in axial sliding；
Be provided with restriction portion on the piston rod, restriction portion is arranged on the sliding trace of valve block, valve block respectively with corresponding side
Restriction portion cooperatively form the circulation passage of hydraulic oil, the perimeter of restriction portion outer ring is pressurized the direction moved along corresponding valve block successively
Increase, is additionally provided with the elastic component that driving valve block resets after by hydraulic moving in the lumen.
Preferably, two panels valve block is provided on the piston rod, two panels valve block compression moving direction is opposite.
Preferably, the flow-conveying groove of connection piston only two sides is offered on the piston rod or piston only.
Preferably, the elastic component is set in the outer ring of piston rod.
Preferably, the elastic component is the tower spring of uniform external diameter variation；
Or the elastic component is that coefficient of elasticity is different and multiple springs of head and the tail connection, between adjacent springs by spring every
Plate is spaced；
Or the elastic component is multiple springs that coefficient of elasticity is different and height is different, multiple springs are successively arranged.
Preferably, the valve block is located at the two sides of piston only, and two groups of elastic components are located at corresponding side valve block
Between piston only, the valve block block limited to valve block is additionally provided on the outside of the valve block of two sides.
Preferably, the valve block is located at the ipsilateral of piston only, is fixed with spring stop, valve block difference on the piston rod
Positioned at the two sides of spring stop, two groups of elastic components are located between corresponding side valve block and spring stop, and in two sides, valve block is outer
Side is additionally provided with the valve block block limited to valve block.
Preferably, the valve block is located at the two sides or ipsilateral of piston only, is provided on the inside of the valve block of two sides
Valve block block；The elastic component is respectively provided at both sides the outside of valve block, is also respectively provided on the outside of two-side elastic part
The fixed spring stop with piston rod.
Preferably, the outer wall of the restriction portion is even surface, the perimeter even variation of restriction portion outer ring.
Preferably, the outer wall of the restriction portion is multisection type, and each section gradually changes, and in same section, restriction portion
Perimeter even variation.
Compared with prior art, beneficial effect possessed by the utility model is:
1, in this piston rod throttle type daming piston, through setting valve block and restriction portion, after valve block is pressurized movement
The circulation area that circulation passage may be implemented is gradually reduced, therefore is avoided piston only and instantaneously significantly moved, and is imitated to damping
Fruit plays limitation.
2, by setting flow-conveying groove, the connection of piston only two sides oil pocket is realized.
3, by setting tower spring, the reset of valve block can be realized after by hydraulic be subjected to displacement in valve block.
Detailed description of the invention
Fig. 1 is 1 structural schematic diagram of piston rod throttle type daming piston embodiment.
Fig. 2 is 2 structural schematic diagram of piston rod throttle type daming piston embodiment.
Fig. 3 is 3 structural schematic diagram of piston rod throttle type daming piston embodiment.
Fig. 4 is 4 structural schematic diagram of piston rod throttle type daming piston embodiment.
Fig. 5 is 5 structural schematic diagram of piston rod throttle type daming piston embodiment.
Fig. 6 is 6 structural schematic diagram of piston rod throttle type daming piston embodiment.
Fig. 7 is 7 structural schematic diagram of piston rod throttle type daming piston embodiment.
Wherein: 1, piston rod 2, piston cylinder 3, valve block block 4, valve block 5, tower spring 6, flow-conveying groove 7, piston only
8, restriction portion 9, the first spring 10, second spring 11, spring insert 12, spring stop.
Specific embodiment
Fig. 1 is the most preferred embodiment of the utility model, and 1 ~ 7 pair of the utility model is described further with reference to the accompanying drawing.
Embodiment 1:
As shown in Figure 1, a kind of piston rod throttle type daming piston, including piston cylinder 2, piston cylinder 2 are circle closed at both ends
Tubular is internally provided with the plunger shaft axially penetrated through in piston cylinder 2, is provided at the center of 2 inner cavity of piston cylinder circular
The inner wall of piston only 7, the outer wall and piston cylinder 2 of piston only 7 fits closely, and plunger shaft interval is formed two by piston only 7
A oil pocket.
Be provided with piston rod 1 at the center of piston only 7, one end of piston rod 1 from one end port of piston cylinder 2 into
Enter to pass through after plunger shaft piston only 7 and fixed with piston only 7, the junction of piston rod 1 and piston only 7 offer to
A few flow-conveying groove 6, the connection of flow-conveying groove 6 are located at two oil pockets of 7 two sides of piston only, and flow-conveying groove 6 can also be provided with piston
On ontology 7.
It is separately installed with a tower spring 5 in the two sides of piston only 7, the outside of tower spring 5 is also respectively provided with one in two sides
A valve block 4, the tower spring 5 and valve block 4 of 7 two sides of piston only are set in the outer ring of piston rod 1, two sides valve block 4 and piston cylinder 2
There are gaps for inner surface.It is also respectively provided with a valve block block 3 in the outside of two panels valve block 4, by the way that valve block block 3 is arranged
Valve block 4 can be limited, valve block 4 is avoided to be ejected under the elastic force of corresponding column spring 5.Valve block block 3 can be with piston rod 1
It is wholely set the surface that piston rod 1 can also be fixed on by conventional means.
Two sections of restriction portions 8 are provided on piston rod 1, two sections of restriction portions 8 are corresponding with a piece of valve block 4 respectively, in this implementation
In example, the cross sectional shape and 4 internal via shape of valve block of restriction portion 8 are circle, and each end restriction portion 8 is arranged in corresponding valve block 4
On the track to reciprocatingly slide.The outer diameter (outer circumference) of restriction portion 8 is sequentially increased, valve block 4 along the direction that the compression of valve block 4 is moved
The circulation passage that hydraulic oil stream flows through valve block 4 is cooperatively formed with restriction portion 8.The surface of restriction portion 8 is even surface.
Specific work process and working principle are as follows:
This piston rod throttle type daming piston when in use, piston rod 1 and piston cylinder 2 be separately mounted to automobile vehicle body and
At wheel set, when automobile shakes, vehicle body and wheel set are relatively moved, corresponding that piston rod 1 is made to drive work
Plug body 7 moves back and forth in plunger shaft.When shaking more slight, movement of the piston only 7 in plunger shaft is more
Slowly and mobile range is smaller, and oil liquid can pass through the gap between restriction portion 8 and valve block 4 at this time and flow-conveying groove 6 realizes flowing.
When automobile will appear the case where vibration is mutated in the process of moving, as wheel touches biggish barrier or wheel
When precepitating into hole, piston rod 1 will drive piston only 7 and is largely displaced in a short time, be now placed in valve
The hydraulic oil of 4 corresponding side of piece can cause biggish extruding to the surface of valve block 4, when the pressure of hydraulic oil is enough to overcome limit tower spring
When 5 elastic force, valve block 4 can be pressed towards the side of piston only 7, since 5 even thickness of tower spring changes, the elastic force of tower spring 5
It gradually changes, therefore the contraction state of tower spring 5 can be gradually tapered up with the variation of hydraulic fluid pressure, at this time valve block 4 and throttling
The circulation area for the pressure oil that section 8 cooperatively forms is gradually reduced, to slow down the degree of displacement of piston only 7.If hydraulic oil
Excessive to the extruding force of valve block 4, then valve block 4 can be moved to the inner end of restriction portion 8, and the circulation area of hydraulic oil is minimized,
To realize limitation to damping effect, when the pressure of hydraulic oil is gradually reduced, valve block 4 can under the action of tower spring 5 by
Gradually reset.
Embodiment 2:
As shown in Fig. 2, the present embodiment the difference from embodiment 1 is that: in the present embodiment, omit tower spring 5 and pass through bullet
The first different spring 9 of property coefficient and second spring 10 are replaced.Spring insert 11, the first bullet are set on piston rod 1
Spring 9 and second spring 10 are located at the two sides of spring insert 11 and are sleeved on the outer ring of piston rod 1 simultaneously, and spring insert 11 can
It slides axially along piston rod 1.When valve block 4 is pressurized it is mobile when, the small spring of elasticity of compression coefficient first, when hydraulic oil pressure by
Continue elasticity of compression coefficient big spring when cumulative big, realizes valve block 4 and gradually tapered up by the variation with hydraulic fluid pressure
Effect.
The present embodiment can also carry out head and the tail connection using the different spring of more coefficient of elasticity when implementing and successively install.
Embodiment 3:
As shown in figure 3, the present embodiment the difference from embodiment 1 is that: in the present embodiment, omit tower spring 5 and pass through bullet
The first different spring 9 of property coefficient and second spring 10 are replaced.First spring 9 is different with 10 coefficient of elasticity of second spring,
Diameter is different and height is different, and the small spring of diameter is mounted on to the inner ring of the big spring of diameter, the first spring 9 and second spring
10 are sleeved on the outer ring of piston rod 1 simultaneously.When valve block 4 is pressurized movement, a wherein spring is compressed first, when the pressure of hydraulic oil
Contacted after valve block 4 continues to move to when power is gradually increased with other spring and continue to compress other spring, realize valve block 4 by
The effect gradually tapered up with the variation of hydraulic fluid pressure.First spring 9 can also be identical with diameter with second spring 10, cross cap
Dress.
The present embodiment can also be using more coefficient of elasticity are different, diameter is identical or different and height is different when implementing
Spring is set with.
Embodiment 4:
As shown in figure 4, the present embodiment the difference from embodiment 1 is that: in the present embodiment, restriction portion 8 is along piston rod 1
It is divided axially into multistage, each section of diameter ecto-entad is sequentially increased, and in each section, and the uniform external diameter of restriction portion 8 increases.
Embodiment 5:
As shown in figure 5, the present embodiment the difference from embodiment 1 is that: in the present embodiment, two panels valve block 4 is located at piston
The same side of ontology 7, piston only 7 are preferably placed at one end that piston rod 1 stretches out piston cylinder 2.It is fixed at least on piston rod 1
A piece of spring stop 12 obstructs two tower springs 5 using spring stop 12.
Embodiment 6:
As shown in fig. 6, the present embodiment the difference from embodiment 1 is that: in the present embodiment, valve block 4 is located at piston only 7
Two sides and tower spring 5 be located at the outside of valve block 4, specifically:
It is respectively arranged with a piece of spring stop 12 in the two sides of piston only 7, spring stop 12 is fixed on outside piston rod 1
Circle, in two sides, a tower spring 5 is respectively set in the inside of spring stop 12, and in two sides, the inside of tower spring 5 is also respectively provided with a piece of
Valve block 4, tower spring 5 and valve block 4 are set in the outer ring of piston rod 1.A valve block is also respectively provided in the inside of two panels valve block 4
Block 3 can limit valve block 4 by the way that valve block block 3 is arranged, avoid valve block 4 under the elastic force of corresponding column spring 5 by bullet
Out, while by valve block block 3 valve block 4 can be made to be arranged in the two sides of piston only 7 and the interval of piston only 7.
In the present embodiment, along the direction that the compression of valve block 4 is moved, the outer diameter of restriction portion 8 is sequentially increased from inside to outside.
Embodiment 7:
As shown in fig. 7, the present embodiment and the difference of embodiment 6 are: in the present embodiment, two panels valve block 4 is located at piston
The same side of ontology 7, piston only 7 are preferably placed at one end that piston rod 1 stretches out piston cylinder 2.
Embodiment 8:
The present embodiment the difference from embodiment 1 is that: in the present embodiment, be only provided with a piece of valve block 4, therefore in this reality
It applies in example, flow control effect can be only realized when movement of the piston only 7 in a certain determining direction.
Embodiment 9:
The present embodiment the difference from embodiment 1 is that: in the present embodiment, the outer ring of restriction portion and the inner hole of valve block 4
Shape may be designed as other shapes, such as triangle, rectangle, be also designed to other irregular side shapes.
The specific embodiment of the application can be any combination of the above various embodiments.
The above descriptions are merely preferred embodiments of the present invention, is not to make other forms to the utility model
Limitation, any person skilled in the art is changed or is modified as possibly also with the technology contents of the disclosure above equivalent
The equivalent embodiment of variation.But it is all without departing from the content of the technical scheme of the utility model, the technology according to the utility model is real
Matter any simple modification, equivalent variations and remodeling to the above embodiments, still fall within the guarantor of technical solutions of the utility model
Protect range.
Claims (10)
1. a kind of piston rod throttle type daming piston, including full of the piston cylinder (2) by hydraulic oil, piston cylinder (2) is interior to be provided with
Piston only (7), piston rod (1) one end connect piston only (7), and the other end is drawn from piston cylinder (2) port, piston rod (1)
Piston only (7) are driven to move back and forth in piston cylinder (2), it is characterised in that: the piston rod (1) passes through piston only
(7) and it is fixed, piston rod (1) outer ring be set with by after hydraulic along piston rod (1) at least a piece of valve block (4) in axial sliding；
It is provided on piston rod (1) restriction portion (8), restriction portion (8) is arranged on the sliding trace of valve block (4), valve block (4) point
The circulation passage of hydraulic oil is not cooperatively formed with the restriction portion of corresponding side (8), the perimeter of restriction portion (8) outer ring is along corresponding valve block
(4) the mobile direction of compression is sequentially increased, and is additionally provided with the elasticity that driving valve block (4) resets after by hydraulic moving in the lumen
Part.
2. piston rod throttle type daming piston according to claim 1, it is characterised in that: on the piston rod (1)
It is provided with two panels valve block (4), two panels valve block (4) compression moving direction is opposite.
3. piston rod throttle type daming piston according to claim 1, it is characterised in that: in the piston rod (1) or
The flow-conveying groove (6) of connection piston only (7) two sides is offered on piston only (7).
4. piston rod throttle type daming piston according to claim 1, it is characterised in that: the elastic component is set in work
The outer ring of stopper rod (1).
5. piston rod throttle type daming piston according to claim 1, it is characterised in that: the elastic component is that outer diameter is equal
The tower spring (5) of even variation；
Or the elastic component is that coefficient of elasticity is different and multiple springs of head and the tail connection, by spring insert between adjacent springs
(11) it is spaced；
Or the elastic component is multiple springs that coefficient of elasticity is different and height is different, multiple springs are successively arranged.
6. piston rod throttle type daming piston according to claim 2, it is characterised in that: valve block (4) the difference position
In the two sides of piston only (7), two groups of elastic components are located between corresponding side valve block (4) and piston only (7), in two side valves
The valve block block (3) limited to valve block (4) is additionally provided on the outside of piece (4).
7. piston rod throttle type daming piston according to claim 2, it is characterised in that: the valve block (4), which is located at, lives
Plug body (7) it is ipsilateral, be fixed on piston rod (1) spring stop (12), valve block (4) is located at spring stop (12)
Two sides, two groups of elastic components are located between corresponding side valve block (4) and spring stop (12), and in two sides, the outside of valve block (4) is also
It is provided with the valve block block (3) limited to valve block (4).
8. piston rod throttle type daming piston according to claim 2, it is characterised in that: valve block (4) the difference position
In the two sides of piston only (7) or ipsilateral, valve block block (3) are provided on the inside of two sides valve block (4)；The elastic component point
The spring fixed with piston rod (1) She Zhi not be also respectively provided on the outside of two-side elastic part in the outside of two sides valve block (4)
Baffle (12).
9. piston rod throttle type daming piston according to claim 1, it is characterised in that: the outer wall of the restriction portion (8)
For even surface, the perimeter even variation of restriction portion (8) outer ring.
10. piston rod throttle type daming piston according to claim 1, it is characterised in that: the outer wall of the restriction portion (8)
For multisection type, each section is gradually changed, and in same section, the perimeter even variation of restriction portion (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820626123.XU CN208221458U (en) | 2018-04-28 | 2018-04-28 | A kind of piston rod throttle type daming piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820626123.XU CN208221458U (en) | 2018-04-28 | 2018-04-28 | A kind of piston rod throttle type daming piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208221458U true CN208221458U (en) | 2018-12-11 |
Family
ID=64513161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820626123.XU Expired - Fee Related CN208221458U (en) | 2018-04-28 | 2018-04-28 | A kind of piston rod throttle type daming piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208221458U (en) |
-
2018
- 2018-04-28 CN CN201820626123.XU patent/CN208221458U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181211 Termination date: 20210428 |