CN204083031U - Vehicle shock absorber, suspension fork mechanism and automobile - Google Patents
Vehicle shock absorber, suspension fork mechanism and automobile Download PDFInfo
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- CN204083031U CN204083031U CN201420517612.3U CN201420517612U CN204083031U CN 204083031 U CN204083031 U CN 204083031U CN 201420517612 U CN201420517612 U CN 201420517612U CN 204083031 U CN204083031 U CN 204083031U
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- tubular elements
- piston
- piston rod
- vibration damper
- shock absorber
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Abstract
A kind of vehicle shock absorber, suspension fork mechanism and automobile, wherein vehicle shock absorber comprises the first vibration damper; First vibration damper comprises: the first tubular elements, be arranged in the first piston of the first tubular elements; First piston bar and the second piston rod, stretch into the first tubular elements from the first tubular elements two ends respectively; Second piston rod is connected with first piston, and first piston bar and first piston are oppositely arranged and surround cavity; For being dynamically connected between first piston bar and the first tubular elements, the first tubular elements is by being dynamically connected and can relatively moving axially by first piston bar; One end that first tubular elements is positioned at the second piston rod is provided with limited part, and described limited part is axially relative and spacing to moving axially of first piston with first piston.First damper structure of this programme is simple, and cost is lower, and easy for installation, can realize the object of vehicles vibration damper integral damping parameter within the specific limits, to improve the smoothness of automobile running.
Description
Technical field
The utility model relates to automobile technical field, particularly a kind of vehicle shock absorber, suspension fork mechanism and and automobile.
Background technique
In existing automobile technical field, suspension fork mechanism has the elastic element connecting vehicle body and suspension, and this elastic element can filter the vibration of vehicle body and the vehicle bridge caused because of Uneven road.Elastic element is while filter vibration, self also can rebound and to-and-fro motion, therefore be provided with in suspension fork mechanism and connect vehicle body and suspension and the vibration damper arranged side by side with elastic element, concussion when this vibration damper rebounds after can suppressing spring shock-absorbing and the impact from road surface, to improve ride of vehicle.
Existing vehicle shock absorber generally adopts hydraulic shock absorber, and comprise cylinder body, be arranged in the piston of cylinder body, be connected with a piston rod in one end of piston, piston rod stretches out outside cylinder body.In cylinder body, hydraulic oil is housed, it is two chambers that cylinder body separates by piston, in piston, be provided with hydrovalve, and this hydrovalve is communicated with described two chambers.When the relative vehicle body of wheel being moved up and down when road injustice, hydraulic oil in cylinder body just flows into another chamber from a chamber by hydrovalve, friction between the valve opening of hydrovalve and fluid and the intermolecular interior friction of fluid just form the damping force to vibrating, the damped power of vibrational energy is absorbed into heat energy, is fallen apart in air by shock absorber casing.
Damping is the important parameter characterizing vibration damper attenuation vibration performance, and damping is larger, and vibration is eliminated faster, but the effect of elastic element can not be given full play to, and meanwhile, excessive damping also may cause the union piece of vibration damper and vehicle frame to damage.Damping is too small, concussion when can not effectively suppress elastic element to rebound.Therefore, prior art develops a kind of ride control shock absorber, but this ride control shock absorber complex structure and cost is higher, be difficult to popularize in general-utility car.
Model utility content
The problem that the utility model solves is, although existing ride control shock absorber can adjust its damping size, and complex structure and cost is higher.
For solving the problem, the utility model provides a kind of vehicle shock absorber, and this vehicle shock absorber comprises the first vibration damper;
Described first vibration damper comprises:
Two ends are provided with the first tubular elements of opening, are arranged in the first piston of described first tubular elements;
First piston bar and the second piston rod, stretch into the first tubular elements from described first tubular elements both ends open respectively;
Described second piston rod is connected with first piston, and described first piston bar and first piston are oppositely arranged and surround closed cavity, in described cavity, gas are housed;
For being dynamically connected between described first piston bar and the first tubular elements, described first tubular elements is by being dynamically connected and can relatively moving axially by first piston bar;
One end that described first tubular elements is positioned at the second piston rod is vertically provided with limited part at aperture position, and described limited part is axially relative and spacing to moving axially of first piston with first piston.
Alternatively, being describedly dynamically connected as being threaded, the first tubular elements can being made to move vertically relative to first piston bar by screwing the first tubular elements.
Alternatively, described first piston and the second piston rod are for being threaded.
Alternatively, described limited part is the loop configuration around the second piston rod; Or the quantity of described limited part is multiple, spaced apart around the second piston rod.
Alternatively, also comprise the second vibration damper, the other end that described second piston rod is axially relative with the first tubular elements and the second vibration damper connect;
Described second vibration damper drives first piston to move axially by the second piston rod.
Alternatively, also comprise:
3rd tubular elements, be connected with the first tubular elements between described second vibration damper and the first tubular elements and by described limited part, described second piston rod passes the 3rd tubular elements and is connected with first piston in the first tubular elements, and the internal diameter of described 3rd tubular elements is less than the internal diameter of the first tubular elements.
Alternatively, be transition fit or Spielpassung between described second piston rod and the 3rd tubular elements.
Alternatively, also comprise:
Around and connect the base of described second vibration damper;
Around and connect the footstock of the second piston rod between described second vibration damper and the first tubular elements;
Between described footstock and base and around the elastic component of the second piston rod medial axis, described elastic component is axially compressed along the second vibration damper.
The utility model also provides a kind of suspension fork mechanism, and this suspension fork mechanism comprises crossbeam, is positioned at the above-mentioned vehicle shock absorber at described crossbeam two ends;
Described second vibration damper vertically dorsad one end of the first tubular elements be connected with crossbeam by pillar.
Alternatively, also comprise: be arranged on the elastic component on crossbeam side by side with each described vehicle shock absorber.
Alternatively, also comprise:
Around the base of described second vibration damper;
Around and around the footstock of the second piston rod between described second vibration damper and the first tubular elements;
Between described footstock and base and around the elastic component of the second piston rod medial axis, described elastic component is axially compressed along the second vibration damper.
The utility model also provides a kind of automobile, and this automobile comprises above-mentioned suspension fork mechanism; Described first piston bar is connected with automotive body.
Compared with prior art, the technical solution of the utility model has the following advantages:
Gas in cavity plays damping function.First tubular elements by can be dynamically connected can relative to first piston bar vertically two opposite directions move, to change the axial spacing between limited part and first piston bar, and then change the maximum displacement of first piston movement in the first tubular elements, realize the maximum volume of change cavity with the object of adjustments of gas damping.Such as, when the first tubular elements moves along the second piston rod sensing first piston bar direction, axial spacing between limited part and first piston bar reduces, the maximum volume of cavity reduces, when wheel runs into protruding road surface, second piston rod promotes first piston and moves towards first piston bar, minimum volume is compressed to the gas in cavity, the maximum displacement of first piston movement is less, air damping in cavity increases, can attenuate vibration within a short period of time, the damping behavior of vehicle shock absorber is harder; On the contrary, when the second vibration damper moves the first tubular elements dorsad, axial spacing between limited part and first piston bar increases, the maximum volume of cavity increases, when wheel runs into protruding road surface, the maximum displacement of first piston movement is less, and the air damping in cavity is less, and the damping behavior of vehicle shock absorber is softer.Therefore, by regulating the damping of the first vibration damper, the damping of whole vehicle shock absorber can be regulated, with the Parameters variation making the damping size of vehicle shock absorber adapt to road conditions, automobile load or suspension fork mechanism.The vehicle shock absorber structure of this programme is simple, and cost is lower, and easy for installation, can realize the object of vehicles vibration damper integral damping parameter within the specific limits, to improve the smoothness of automobile running.
Accompanying drawing explanation
Fig. 1 is the perspective view of the vehicle shock absorber of the utility model specific embodiment;
Fig. 2 is the cross-sectional view of Fig. 1 along AA direction.
Embodiment
For enabling above-mentioned purpose of the present utility model, feature and advantage more become apparent, and are described in detail specific embodiment of the utility model below in conjunction with accompanying drawing.
In conjunction with reference Fig. 1, Fig. 2, the vehicle shock absorber of the present embodiment comprises the first vibration damper 1;
First vibration damper 1 comprises:
First tubular elements 10, first piston 13, first tubular elements 10 being arranged in the first tubular elements 10 have both ends open;
First piston bar 11 and the second piston rod 12, stretch into the first tubular elements 10 from the first tubular elements 10 both ends open respectively;
Second piston rod 12 is connected with first piston 13, first piston bar 11 and first piston 13 are oppositely arranged and surround closed cavity 14, in this cavity 14, pressurized gas are housed, to do damping;
For being dynamically connected between first piston bar 11 and the first tubular elements 10, the first tubular elements 10 is by being dynamically connected and can relatively moving axially by first piston bar 11;
One end that first tubular elements 10 is positioned at the second piston rod 12 is vertically provided with limited part 15 at aperture position, this limited part 15 and first piston 13 axially relative and to first piston 13 move axially carry out spacing.
Use the vehicle shock absorber of the present embodiment, first piston bar 11 is connected with vehicle body, and the second piston rod 12 directly bears the vibration from wheel, and this vehicle shock absorber can regulate self integral damping parameter by the first vibration damper 1.When wheel meets with projection in the process of moving, wheel upwards takeoffs and causes automobile vibration, second piston rod 12 directly bears the vibration from wheel, promote first piston 13 to move towards first piston bar 11, gas in cavity 14 is compressed, and mobile formation of first piston 13 is hindered, to play the effect of attenuation vibration.On the contrary, when first piston bar 11 drives the first tubular elements 10 to move towards the second piston rod 12, the gas in first piston bar 11 meeting compaction cavum 12, the mobile formation to first piston bar 11 hinders gas.According to different road conditions, the first tubular elements 10 is moved axially by the described relative first piston bar 11 that is dynamically connected, the spacing between limited part 15 with axially relative first piston bar 11 end face can be changed, and then change the maximum displacement of first piston 13 movement in the first tubular elements 10, to realize the change maximum volume of cavity 14 and the object of adjustments of gas damping.
Particularly, be the direction that the second piston rod 12 points to first piston bar 11 vertically with reference to Fig. 2, direction B, direction C is the opposite direction of direction B;
When moving the first tubular elements 10 from initial position along direction B relative to first piston bar 11, compared to initial position, the maximum displacement of first piston 13 movement reduces, the maximum volume of cavity 14 reduces, when wheel runs into protruding road surface, wheel orders about the second piston rod 12 and promotes first piston 13 and move towards first piston bar 11, minimum volume is compressed to the gas in cavity 14, spended time is shorter, attenuate the vibration between wheel and vehicle body within a short period of time, air damping in cavity 14 increases, and the damping behavior of vehicle shock absorber is harder;
When moving the first tubular elements 10 from initial position along direction C, compared to initial position, the maximum displacement of first piston 13 movement is comparatively large, and the maximum volume of cavity 14 increases, when wheel runs into protruding road surface, wheel orders about the second piston rod 12 and promotes first piston 13 and move towards first piston bar 11, be compressed to minimum volume to the gas in cavity 14, institute's spended time is longer, attenuates vibration in a long time, air damping in cavity 14 is less, and the damping behavior of vehicle shock absorber is softer.
Thus, by the first vibration damper 1, can the integral damping size of vehicles vibration damper within the specific limits, with the Parameters variation making the damping parameter of vehicle shock absorber adapt to road conditions, automobile load or suspension fork mechanism, improve the smoothness of automobile running.And, the vehicle shock absorber of the present embodiment realize damping adjustable while, structure is simple, and manufacture cost is lower.
For realizing better damping, the vehicle shock absorber of the present embodiment also comprises the second vibration damper 2, the other end that second piston rod 12 is relative with the first tubular elements 10 and the second vibration damper 2 connect, namely the first vibration damper 1 and the second vibration damper 2 share the second piston rod 12, second piston rod 12 also belongs to the parts of the second vibration damper 2, and the second vibration damper 2 drives first piston 13 to move axially by the second piston rod 12.The type of the second vibration damper 2 can with reference to existing vehicle shock absorber, as hydraulic shock absorber, air-supported shock absorber etc.In the present embodiment, second vibration damper 2 is hydraulic shock absorber, comprise: the second tubular elements 20, be arranged in the second piston (not shown) of the second tubular elements 20, second tubular elements 20 has both ends open, the not complete complete structure that second vibration damper 2 is shown in fig. 1 and 2, the structure of the second vibration damper 2 can with reference to existing hydraulic shock absorber.Wherein, the other end that the second piston rod 12 is relative with the first tubular elements 10 stretches in the second tubular elements 20, and is connected with the second piston.Like this, when applying the vehicle shock absorber of the present embodiment, the second tubular elements 20 is connected with the crossbeam of suspension by a pillar.Second vibration damper 2 plays the damping function vibrated between main decay wheel and vehicle body.
Except the damping of vehicles vibration damper, first vibration damper 1 of the present embodiment and the second vibration damper 2 also can cooperatively interact, and jointly play damping effect, have better effectiveness in vibration suppression to make vehicle shock absorber.Particularly, pop up after wheel is subject to the excitation of bump, first vibration passing to the second vibration damper 2, second tubular elements 20 moves upward, second piston rod 12, second tubular elements 20 relative to the second piston moves down, the movement of the second piston can be hindered, and then reaches the object of attenuation vibration.Simultaneously, in this process, the second piston rod 12 has because of the resistance be subject to upwards the trend moved upward, by the pressurized gas in first piston 13 compaction cavum 14, gas produces the motion that pressure hinders first piston 13 and the second piston rod 12, and then reaches the object of attenuation vibration.
As variation, when the second vibration damper selects other structural vibration reduction devices, the second piston rod is the corresponding rod-like structure on selected vibration damper, and the first vibration damper is linked together by the second piston rod and the second vibration damper.
In the vehicle shock absorber installation process of the present embodiment, first the first tubular elements 10 is set on the second piston rod 12, and moves the first tubular elements 10 towards the second tubular elements 20, stretch out outside the first tubular elements 10 to the second piston rod 12;
Then, one end that first piston 13 and the second piston rod 12 stretch out the first tubular elements 10 is connected, and promotes the second piston rod 12 by first piston 13 along direction C, be arranged in the first tubular elements 10 completely to first piston 13;
Afterwards, first piston bar 11 is stretched into the first tubular elements 10 from the one end open of the first tubular elements 10 second tubular elements 20 dorsad, and can be dynamically connected with the first tubular elements 10, the length that first piston bar 11 stretches into the first tubular elements 10 determines the size of air damping in cavity 14.Before first piston bar 11 and the first tubular elements 10 being installed, pressurized gas can be filled with in cavity 14, using as damping medium.
In the present embodiment, being dynamically connected as being threaded of the first tubular elements 10 and first piston bar 11.Particularly, end, one end outer circumferential face be connected with the first tubular elements 10 at first piston bar 11 is provided with the outside thread of axial screw, and correspondingly, be provided with internal thread at the inner peripheral surface of the first tubular elements 10, internal thread and outside thread can realize screw-thread fit.On the one hand, screw-thread fit can realize the first tubular elements 10 and fixes with first piston bar 11.On the other hand, when needs vehicles resistance of shock absorber, by screwing the first tubular elements 10, relatively the first tubular elements 10 can be moved axially by first piston bar 11.Except being threaded, as variation, also can be other between the first tubular elements and first piston bar can be dynamically connected, and both can realize retention effect, also the moving axially of adjustable first tubular elements.
In addition, the second piston rod 12 and first piston 13 are for being threaded, fixing to realize both, and can meet assembling needs.Except being threaded, as variation, the second piston rod and first piston also can be pin and are connected or other Placements.Consider that cavity 14 needs to keep airtight again, good assembly precision must be had between first piston 13 and the first tubular elements 10, assembling demand can not only be met, can also ensure, between first piston 13 and the first tubular elements 10, there is excellent sealing.
Moreover when first piston 13 and the second piston rod 12 assemble, the second piston rod 12 is through limited part 15.Coordinate for movable between limited part 15 with the second piston rod 12, limited part 15 can not cause stop to the second moving axially of piston rod 12.Therefore, the second piston rod 12 is connected by transition fit or Spielpassung with limited part 15, and avoids relative first tubular elements 10 of the second piston rod 12 when automobile running to rock.Namely, limited part 15 can not only limit the axial displacement of first piston 13, also can carry out radial direction to the second piston rod 12 spacing.Wherein Spielpassung is that small―gap suture coordinates, and avoids the radial clearance between limited part 15 and the second piston rod 12 to affect comparatively greatly the stability of the second piston rod 12.In the present embodiment, limited part 15 is the loop configuration around the second piston rod 12, loop configuration can make limited part 15 all directions radially carry out spacing to the second piston rod 12, can prevent relatively rocking between the second piston rod 12 and the first tubular elements 10 preferably.Except the present embodiment scheme, as variation, limited part also: the quantity of limited part is multiple, spaced apart around the second piston rod.
In the present embodiment, be formed in one between limited part 15 and the first tubular elements 10 or be welded to connect.
For the position realized between the second piston rod 12 and the first tubular elements 10 is more firm, in axial direction, vehicle shock absorber is also comprised the 3rd tubular elements the 30, three tubular elements 30 between the second tubular elements 20 and the first tubular elements 10 and is fixedly connected with the first tubular elements 10 by limited part 15.Second piston rod 12 passes the 3rd tubular elements 30 and is connected with first piston 13 in the first tubular elements 10, and wherein the internal diameter of the 3rd tubular elements 30 is less than the internal diameter of the first tubular elements 10.3rd tubular elements 30 has larger axis to size, can carry out radial spacing well to the second piston rod 12.In addition, be movable cooperation between 3rd tubular elements 30 and the second piston rod 12, drive fit can not be formed between the two, to avoid the 3rd tubular elements 30, stop is caused to the second moving axially of piston rod 12, therefore, be connected by transition fit or Spielpassung between 3rd tubular elements 30 with the second piston rod 12, wherein reduce to coordinate for comparatively small―gap suture coordinates, avoid causing rocking of the second piston rod 12 compared with wide arc gap.
The utility model also provides a kind of suspension fork mechanism, and this suspension fork mechanism comprises crossbeam, is positioned at the above-mentioned vehicle shock absorber at crossbeam two ends.This vehicle shock absorber also comprises: around and connect the base of the second tubular elements; Around and connect the footstock of the first piston bar part between the second tubular elements and the first tubular elements; Between footstock and base and around the elastic component of the second piston rod medial axis, this elastic component leans with footstock and base vertically respectively, and axially compressed along the second tubular elements.This elastic component mainly plays the effect of the Relative Vibration between decay vehicle body and wheel, and concussion when vehicle shock absorber rebounds after can suppressing elastic component shock-absorbing, to improve ride of vehicle.Wherein elastic component can be helical spring, steel sheet spring or other feasible elastic components.
Except such scheme, can also be: be arranged on the elastic component on crossbeam side by side with each vehicle shock absorber.Particularly, be respectively equipped with two vehicle shock absorbers at crossbeam two ends, corresponding each vehicle shock absorber is provided with an elastic component.
The utility model also provides a kind of automobile, and this automobile comprises above-mentioned suspension fork mechanism, and wherein the second vibration damper is fixedly connected with automotive body by first piston bar.
Although the utility model discloses as above, the utility model is not defined in this.Any those skilled in the art, not departing from spirit and scope of the present utility model, all can make various changes or modifications, and therefore protection domain of the present utility model should be as the criterion with claim limited range.
Claims (12)
1. a vehicle shock absorber, is characterized in that, comprises the first vibration damper;
Described first vibration damper comprises:
Two ends are provided with the first tubular elements of opening, are arranged in the first piston of described first tubular elements;
First piston bar and the second piston rod, stretch into the first tubular elements from described first tubular elements both ends open respectively;
Described second piston rod is connected with first piston, and described first piston bar and first piston are oppositely arranged and surround closed cavity, in described cavity, gas are housed;
For being dynamically connected between described first piston bar and the first tubular elements, described first tubular elements is by being dynamically connected and can relatively moving axially by first piston bar;
One end that described first tubular elements is positioned at the second piston rod is vertically provided with limited part at aperture position, and described limited part is axially relative and spacing to moving axially of first piston with first piston.
2. vehicle shock absorber as claimed in claim 1, is characterized in that, is describedly dynamically connected as being threaded, and the first tubular elements can be made to move vertically relative to first piston bar by screwing the first tubular elements.
3. vehicle shock absorber as claimed in claim 1, it is characterized in that, described first piston and the second piston rod are for being threaded.
4. vehicle shock absorber as claimed in claim 1, it is characterized in that, described limited part is the loop configuration around the second piston rod; Or the quantity of described limited part is multiple, spaced apart around the second piston rod.
5. the vehicle shock absorber as described in any one of Claims 1 to 4, is characterized in that, also comprises the second vibration damper, and the other end that described second piston rod is axially relative with the first tubular elements and the second vibration damper connect;
Described second vibration damper drives first piston to move axially by the second piston rod.
6. vehicle shock absorber as claimed in claim 5, is characterized in that, also comprise:
3rd tubular elements, be connected with the first tubular elements between described second vibration damper and the first tubular elements and by described limited part, described second piston rod passes the 3rd tubular elements and is connected with first piston in the first tubular elements, and the internal diameter of described 3rd tubular elements is less than the internal diameter of the first tubular elements.
7. vehicle shock absorber as claimed in claim 6, it is characterized in that, be transition fit or Spielpassung between described second piston rod and the 3rd tubular elements.
8. vehicle shock absorber as claimed in claim 5, is characterized in that, also comprise:
Around and connect the base of described second vibration damper;
Around and connect the footstock of the second piston rod between described second vibration damper and the first tubular elements;
Between described footstock and base and around the elastic component of the second piston rod medial axis, described elastic component is axially compressed along the second vibration damper.
9. a suspension fork mechanism, is characterized in that, comprises crossbeam, is positioned at the vehicle shock absorber described in any one of claim 5 ~ 7 at described crossbeam two ends;
Described second vibration damper vertically dorsad one end of the first tubular elements be connected with crossbeam by pillar.
10. suspension fork mechanism as claimed in claim 9, is characterized in that, also comprise: be arranged on the elastic component on crossbeam with each described vehicle shock absorber side by side.
11. suspension fork mechanisms as claimed in claim 9, is characterized in that, also comprise:
Around the base of described second vibration damper;
Around and around the footstock of the second piston rod between described second vibration damper and the first tubular elements;
Between described footstock and base and around the elastic component of the second piston rod medial axis, described elastic component is axially compressed along the second vibration damper.
12. 1 kinds of automobiles, is characterized in that, comprise the suspension fork mechanism described in any one of claim 9 ~ 11;
Described first piston bar is connected with automotive body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420517612.3U CN204083031U (en) | 2014-09-10 | 2014-09-10 | Vehicle shock absorber, suspension fork mechanism and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420517612.3U CN204083031U (en) | 2014-09-10 | 2014-09-10 | Vehicle shock absorber, suspension fork mechanism and automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204083031U true CN204083031U (en) | 2015-01-07 |
Family
ID=52175754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420517612.3U Expired - Fee Related CN204083031U (en) | 2014-09-10 | 2014-09-10 | Vehicle shock absorber, suspension fork mechanism and automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204083031U (en) |
-
2014
- 2014-09-10 CN CN201420517612.3U patent/CN204083031U/en not_active Expired - Fee Related
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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: 20150107 Termination date: 20210910 |
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| CF01 | Termination of patent right due to non-payment of annual fee |