CN203548690U - Hydraulic damper - Google Patents
Hydraulic damper Download PDFInfo
- Publication number
- CN203548690U CN203548690U CN201320607402.9U CN201320607402U CN203548690U CN 203548690 U CN203548690 U CN 203548690U CN 201320607402 U CN201320607402 U CN 201320607402U CN 203548690 U CN203548690 U CN 203548690U
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- piston
- damping
- chute
- piston rod
- hydraulic damper
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Abstract
The utility model discloses a hydraulic damper which comprises a working cylinder, a piston and a slidable piston rod arranged in the working cylinder, wherein the working cylinder is divided into an upper chamber and a lower chamber by the working cylinder; the piston is provided with a damping passage; the working cylinder is internally provided with a feed screw nut which is matched with the piston rod to form internal circulation type ball helical gearing; the piston comprises a piston body and a sliding block; the sliding block is arranged in the piston body and can move linearly to regulate the opening size of the damping passage during rotation of the piston body. Compared with the prior art, the hydraulic damper has the advantages that the piston rod and the feed screw nut are matched to form internal circulation type ball helical gearing so as to drive the damping plunger sliding block in the piston body to move, the damping plunger sliding block moves along the radial direction of the piston body so as to regulate the clearance between the damping plunger sliding block and the inner wall of the working cylinder, so that the size of the damping channel is regulated, the damping force generated by the damper changes along with the changes of a borne external force, and the damping effect is good.
Description
Technical field
The utility model relates to damping device, and specifically, the utility model relates to a kind of hydraulic damper.
Background technique
The principal mode that the damper that automobile and civil engineering adopt mostly uses electric power to regulate as its damping, just can not obtain the damping demand of expection while producing fault for the occasion of some energy supply inconvenience and energy supply or produce great safe failure and complex structure is installed inconvenience.And the passive hydraulic damper of existing noenergy input in use tends to produce very large vibrations and impacts the damping demand that can not obtain expection, cause producing stable and desirable damping output.
Model utility content
Technical problem to be solved in the utility model is to provide a kind of hydraulic damper that can produce stable and desirable damping output.
In order to solve the problems of the technologies described above, the technological scheme that the utility model adopts is: a kind of hydraulic damper, comprise clutch release slave cylinder, piston and be located at slidable piston rod in clutch release slave cylinder, piston is divided into upper chamber and lower chambers by clutch release slave cylinder, piston is provided with damp channel, one end of piston rod is connected with piston, the other end stretches out in the outside of clutch release slave cylinder and is provided with connection set at this end, in described clutch release slave cylinder, being provided with matches with described piston rod forms the feed screw nut of inner circulation type ball helical gearing, the outer surface of piston rod is provided with screw thread, the end of piston rod and described connection set are for being rotationally connected, described piston comprises piston only and be located at the slide block of can the rectilinear movement described damp channel aperture size of adjusting in piston only when piston only rotates.
Described damp channel is located on the outer peripheral surface of described piston only, on piston only, on the outer side surface at damp channel place, be provided with radially towards the inner chute extending of piston only, in chute, be provided with the damping plunger slide that can move linearly, in chute, be provided with and make damping plunger slide be contracted to the resetting-mechanism in chute.
Described damp channel is along being circumferentially evenly equipped with four on described piston only, and described chute is also evenly equipped with four, is respectively provided with a described damping plunger slide in chute.
The exterior edge face of described damping plunger slide is arc surface.
Described resetting-mechanism comprises the Returnning spring being located in described chute, and Returnning spring one end is connected with described damping plunger slide, and the other end is connected with the inwall of chute.
Described connection set is suspension ring, and one end of suspension ring is provided with mounting hole, and the other end is connected with described piston rod by bearing.
The utility model adopts technique scheme, compared with prior art, this hydraulic damper forms inner circulation type ball helical gearing by adopting piston rod and feed screw nut to match, to drive the damping plunger slide in piston only to move, damping plunger slide moves radially to regulate gap between clutch release slave cylinder inwall along piston only, thereby aperture size that can damping adjusting passage, the damping force size that damper produces changes with the size variation of born extraneous power, damping is good, have simple in structure, reliable performance, the advantages such as cost of production is low.
Accompanying drawing explanation
Fig. 1 is the sectional view of hydraulic damper of the present utility model;
Fig. 2 is the sectional view of piston;
Fig. 3 is the structural representation of damping plunger slide while moving to chute port;
Fig. 4 is the structural representation of damping plunger slide while being contracted in chute;
Mark in above-mentioned figure is: 1, upper rings; 2, bearing; 3, piston rod; 4, feed screw nut; 5, upper end cap; 6, clutch release slave cylinder; 7, upper chamber; 8, piston; 81, piston only; 82, damping plunger slide; 83, Returnning spring; 9, lower chambers; 10, lower end cap; 11, lower lift ring; 12, damp channel.
Embodiment
Be illustrated in figure 1 a kind of hydraulic damper of the present utility model, comprise clutch release slave cylinder 6, piston rod 3 and be located at slidable piston rod 3 in clutch release slave cylinder 6.The lower end of piston rod 3 is inserted in clutch release slave cylinder 6 and is connected with piston 8, and upper end stretches out in the outside of clutch release slave cylinder 6 and is provided with connection set at this end.The two ends up and down of clutch release slave cylinder 6 are sealed by upper end cap 5 and lower end cap 10, and piston 8 and clutch release slave cylinder 6 inwall close contacts, be divided into upper chamber 7 and lower chambers 9 by clutch release slave cylinder 6, and piston 8 is provided with the damp channel 12 that is communicated with upper chamber 7 and lower chambers 9.Piston rod 3, through upper end cap 5, is provided with another connection set on lower end cap 10, and damper is installed fixing by the connection set of piston rod 3 upper ends and the connection set of clutch release slave cylinder 6 lower ends.
In the clutch release slave cylinder 6 of this damper, be provided with the feed screw nut 4 of the formation inner circulation type ball helical gearing matching with piston rod 3; feed screw nut 4 inside is provided with ball; the outer surface of piston rod 3 is provided with one section of outside thread; feed screw nut 4 is fixedly mounted in clutch release slave cylinder 6; the end of piston rod 3 and connection set are for being rotationally connected; guarantee piston rod 3 relatively connection set be rotated; when vibration damper bears external influence power; clutch release slave cylinder 6 drives feed screw nut 4 to move linearly, and feed screw nut 4 is by the motion of spinning of the outside thread piston rod 3 on piston rod 3 surfaces.For fear of power screw, can not produce self-locking stuck, what the externally threaded pitch of piston rod 3 outer surfaces need to be arranged is larger.
As Fig. 1, as 2, as shown in Fig. 3 and Fig. 4, the piston 8 in clutch release slave cylinder 6 comprises circular piston only 81 and be located at the slide block of the damping adjusting passage 12 aperture sizes that can move linearly in piston only 81 when piston only 81 rotates.Damp channel 12 is for extending to form on the outer peripheral surface of piston only 81 along the direction parallel with piston only 81 axis, be that the outer peripheral surface of piston only 81 and the inwall of clutch release slave cylinder 6 have gap in the position of damp channel 12, all the other positions are still close contact.On piston only 81, on the outer side surface at damp channel 12 places, be provided with radially towards the inner chute extending of piston only 81, in chute, be provided with the damping plunger slide 82 that can move linearly, in chute, be provided with and make damping plunger slide 82 be contracted to the resetting-mechanism in chute.
When damper is not worked, damping plunger slide 82 is contracted in chute, between the exterior edge face of damping plunger slide 82 and clutch release slave cylinder 6 inwalls, does not contact, and damp channel 12 is unimpeded.When damper is worked, damping plunger slide 82 moves towards the inwall direction of clutch release slave cylinder 6, from chute, stretches out, aperture size that can damping adjusting passage 12, thus can change the damping force size that damper produces.
The movement of the damping plunger slide 82 in chute is to realize by the rotation of piston 8, when damper bears extraneous axial force, piston 8 can move linearly and rotatablely move under the drive of piston rod 3, piston 8 rotates, thereby can produce a centrifugal force to damping plunger slide 82, damping plunger slide 82 under the effect of centrifugal force in chute towards moving away from the direction at piston 8 centers, from chute, stretch out, regulate the gap between clutch release slave cylinder 6 inwalls, thus size that can damping adjusting passage 12.Extraneous axial force is larger, piston 8 rotating speeds are faster, the centrifugal force producing also can be larger, make the distance between damping plunger slide 82 exterior edge faces and clutch release slave cylinder 6 inwalls also can be nearer, finally make damp channel 12 less, Figure 3 shows that the state of piston 8 when extraneous axial force is larger, state shown in Fig. 4 is the state of hour piston 8 of extraneous axial force.
In chute, be provided with and make damping plunger slide 82 be contracted to the resetting-mechanism in chute, this resetting-mechanism is the Returnning spring 83 being located in chute, and Returnning spring 83 one end are connected with damping plunger slide 82, and the other end is connected with the inwall of chute.When extraneous axial force disappears, damping plunger slide 82 returns to original state under the pulling force of Returnning spring 83, now damp channel 12 maximums, damping minimum.If be used on automobile and can greatly improve riding comfort at the good state of road conditions.
As preferably, damp channel 12 is along being circumferentially evenly equipped with four on piston only 81, and corresponding chute is also evenly equipped with four, is respectively provided with a damping plunger slide 82 in chute.
The exterior edge face of damping plunger slide 82 is arc surface, and when damping plunger slide 82 moves to the outward edge of piston only 81, the outer peripheral surface of the exterior edge face of damping plunger slide 82 and piston only 81 can form a complete circumferential surface.
Because piston rod 3 will rotate; clutch release slave cylinder 6 can only move linearly; the connection set of piston rod 3 upper ends is upper rings 1; the upper end of upper rings 1 is provided with mounting hole; lower end is connected with piston rod 3 by a bearing 2; upper rings 1 is fixedly mounted on the object of damper upper end, guarantees that piston rod 3 can rotate.The connection set of clutch release slave cylinder 6 lower ends is a lower lift ring 11, and the top and bottom lid 10 of upper rings 1 is fixedly connected with, and lower end is provided with a mounting hole, and lower lift ring 11 is fixedly mounted on the object of damper lower end by mounting hole.
Owing to being full of damp liquid in clutch release slave cylinder 6; therefore to guarantee will there is good sealing effect between piston rod 3 and feed screw nut 4; piston rod 3 forms a kind of inner circulation type sealing ball helical gearing with feed screw nut 4, and feed screw nut 4 can be directly installed on upper end cap 5 like this.
In addition, also can between clutch release slave cylinder 6 and the polished rod section of piston rod 3, seal arrangement be set, 3, piston rod arranges outside thread in an outer surface part, and seal arrangement can be located at the top of feed screw nut 4, so also can realize sealing.
By reference to the accompanying drawings the utility model is exemplarily described above; obviously the utility model specific implementation is not subject to the restrictions described above; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technological scheme carry out; or without improving, design of the present utility model and technological scheme are directly applied to other occasion, all within protection domain of the present utility model.
Claims (6)
1. a hydraulic damper, comprise clutch release slave cylinder, piston and be located at slidable piston rod in clutch release slave cylinder, piston is divided into upper chamber and lower chambers by clutch release slave cylinder, piston is provided with damp channel, one end of piston rod is connected with piston, the other end stretches out in the outside of clutch release slave cylinder and is provided with connection set at this end, it is characterized in that: in described clutch release slave cylinder, being provided with matches with described piston rod forms the feed screw nut of inner circulation type ball helical gearing, the outer surface of piston rod is provided with screw thread, the end of piston rod and described connection set are for being rotationally connected, described piston comprises piston only and be located at the slide block of can the rectilinear movement described damp channel aperture size of adjusting in piston only when piston only rotates.
2. hydraulic damper according to claim 1, it is characterized in that: described damp channel is located on the outer peripheral surface of described piston only, on piston only, on the outer side surface at damp channel place, be provided with radially towards the inner chute extending of piston only, in chute, be provided with the damping plunger slide that can move linearly, in chute, be provided with and make damping plunger slide be contracted to the resetting-mechanism in chute.
3. hydraulic damper according to claim 2, is characterized in that: described damp channel is along being circumferentially evenly equipped with four on described piston only, and described chute is also evenly equipped with four, is respectively provided with a described damping plunger slide in chute.
4. according to the hydraulic damper described in claim 2 or 3, it is characterized in that: the exterior edge face of described damping plunger slide is arc surface.
5. hydraulic damper according to claim 4, is characterized in that: described resetting-mechanism comprises the Returnning spring being located in described chute, and Returnning spring one end is connected with described damping plunger slide, and the other end is connected with the inwall of chute.
6. hydraulic damper according to claim 5, is characterized in that: described connection set is suspension ring, and one end of suspension ring is provided with mounting hole, and the other end is connected with described piston rod by bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320607402.9U CN203548690U (en) | 2013-09-29 | 2013-09-29 | Hydraulic damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320607402.9U CN203548690U (en) | 2013-09-29 | 2013-09-29 | Hydraulic damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203548690U true CN203548690U (en) | 2014-04-16 |
Family
ID=50466811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320607402.9U Expired - Fee Related CN203548690U (en) | 2013-09-29 | 2013-09-29 | Hydraulic damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203548690U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122348A (en) * | 2016-06-30 | 2016-11-16 | 安徽工程大学 | Be suitable to the damping adjustment device of hydraulic damper |
| CN108825707A (en) * | 2018-07-05 | 2018-11-16 | 潍坊学院 | A kind of vibration absorber of automotive suspension |
| CN111336207A (en) * | 2020-03-12 | 2020-06-26 | 重庆工程职业技术学院 | Damping adjustable shock absorber for automobile |
| CN113790241A (en) * | 2021-10-20 | 2021-12-14 | 湖南科技大学 | Variable-damping rotary damper |
-
2013
- 2013-09-29 CN CN201320607402.9U patent/CN203548690U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122348A (en) * | 2016-06-30 | 2016-11-16 | 安徽工程大学 | Be suitable to the damping adjustment device of hydraulic damper |
| CN106122348B (en) * | 2016-06-30 | 2017-11-21 | 安徽工程大学 | Damping adjustment device suitable for hydraulic damper |
| CN108825707A (en) * | 2018-07-05 | 2018-11-16 | 潍坊学院 | A kind of vibration absorber of automotive suspension |
| CN111336207A (en) * | 2020-03-12 | 2020-06-26 | 重庆工程职业技术学院 | Damping adjustable shock absorber for automobile |
| CN111336207B (en) * | 2020-03-12 | 2022-08-05 | 重庆工程职业技术学院 | Damping adjustable shock absorber for automobile |
| CN113790241A (en) * | 2021-10-20 | 2021-12-14 | 湖南科技大学 | Variable-damping rotary damper |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 Termination date: 20140929 |
|
| EXPY | Termination of patent right or utility model |