CN204113992U - Automobile mazy type vibration damper - Google Patents
Automobile mazy type vibration damper Download PDFInfo
- Publication number
- CN204113992U CN204113992U CN201420520935.8U CN201420520935U CN204113992U CN 204113992 U CN204113992 U CN 204113992U CN 201420520935 U CN201420520935 U CN 201420520935U CN 204113992 U CN204113992 U CN 204113992U
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- piston
- cylinder barrel
- vibration damper
- mazy type
- automobile
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Abstract
The utility model discloses a kind of automobile mazy type vibration damper and comprise piston body, be fixedly connected on the piston rod of piston body, work cylinder barrel and oil storage cylinder barrel, it is inner that work cylinder barrel is located at oil storage cylinder barrel, oil storage cylinder barrel to be fixedly connected with and by black box I sealing with the lower end of work cylinder barrel, piston body and piston rod stretch in work cylinder barrel and work cylinder barrel upper end by black box II sealing from the upper end of work cylinder barrel, clutch release slave cylinder tube inner chamber is divided into recovery chamber and compression chamber by piston body up and down, the part that oil storage cylinder tube inner chamber is positioned at beyond work cylinder barrel forms shoe cream room, work cylinder barrel sidewall is provided with the return opening being communicated with compression chamber and shoe cream room, piston body comprises columned piston upper body and piston lower body, piston upper body inner cylindrical surface and piston lower body external cylindrical surface are slidably matched, piston cavity is formed between piston upper body and piston lower body, under piston, body sidewall is provided with the mazy type throttle orifice being communicated with compression chamber and piston cavity, piston upper body end face is provided with the filler opening being communicated with and restoring chamber and piston cavity, automobile mazy type vibration damper of the present utility model can make fluid realize step pressure reducing by during throttle orifice, avoid, in vibration damper, cavitation phenomenons occurs, long service life and noise is little.
Description
Technical field
The utility model relates to a kind of damper element, specifically a kind of automobile mazy type vibration damper.
Background technique
Vibration damper is the damper element extensively adopted in automobile suspension system, its principle is, when when vehicle frame and vehicle bridge do reciprocal relative movement, piston moves back and forth in the cylinder barrel of vibration damper, fluid in vibration damper housing just flows into recovery chamber from compression chamber by some narrow holes (i.e. throttle orifice) repeatedly, now, the friction of liquid and inwall and the interior friction of fluid molecule just form the damping force to vibrating.And existing vibration damper at work, fluid produces damping function by restriction, and existing throttle orifice is generally straight hole, when fluid flow to throttle orifice, the speed of fluid can increase sharply, and pressure can reduce rapidly, after fluid is lower than saturated vapor pressure, can vaporize, form bubble.After fluid flows through throttle orifice, pressure gos up, and the bubble just now formed will break, and produces extremely strong local compression; The huge energy produced during bubbles burst can produce serious destruction to the throttle element such as spool, valve seat instantaneously, forms so-called cavitation phenomenons.The damage of bumper assembly certainly will be caused like this, and serious noise can be produced and cause the vibrations of damper member,
Therefore, for overcoming the above problems, needing one that fluid can be made to realize step pressure reducing by during throttle orifice, avoiding cavitation phenomenons occurring in vibration damper, long service life and the little automobile mazy type vibration damper of noise.
Model utility content
In view of this, the purpose of this utility model overcomes defect of the prior art, provides one that fluid can be made to realize step pressure reducing by during throttle orifice, avoids cavitation phenomenons occurring in vibration damper, long service life and the little automobile mazy type vibration damper of noise.
Automobile mazy type vibration damper of the present utility model comprises piston body, be fixedly connected on the piston rod of piston body, work cylinder barrel and oil storage cylinder barrel, it is inner that work cylinder barrel is located at oil storage cylinder barrel, oil storage cylinder barrel to be fixedly connected with and by black box I sealing with the lower end of work cylinder barrel, piston body and piston rod stretch in work cylinder barrel and work cylinder barrel upper end by black box II sealing from the upper end of work cylinder barrel, clutch release slave cylinder tube inner chamber is divided into recovery chamber and compression chamber by piston body up and down, the part that oil storage cylinder tube inner chamber is positioned at beyond work cylinder barrel forms shoe cream room, work cylinder barrel sidewall is provided with the return opening being communicated with compression chamber and shoe cream room, piston body comprises columned piston upper body and piston lower body, piston upper body inner cylindrical surface and piston lower body external cylindrical surface are slidably matched, piston cavity is formed between piston upper body and piston lower body, under piston, body sidewall is provided with the mazy type throttle orifice being communicated with compression chamber and piston cavity, piston upper body end face is provided with the filler opening being communicated with and restoring chamber and piston cavity,
Further, described mazy type throttle orifice multiple runners of comprising sprue and being connected with described sprue outer end;
Further, described sprue the inner is connected to piston cavity, and runner outer end is connected to pressure chamber;
Further, described mazy type throttle orifice is axially uniformly distributed multiple along piston lower body;
Further, described piston rod comprises hollow rod body and is arranged at the push rod that is slidably matched with hollow rod body in hollow rod body and push rod stretches out hollow rod body lower end, and hollow rod body lower end is fixed in piston upper body, and piston lower body is fixed on push rod lower end;
Further, to stretch out hollow rod body outer and be threaded connection adjusting knob in described push rod upper end;
Further, described mazy type throttle orifice is evenly distributed with multiple along piston upper body circumference;
Further, be provided with guide assemblies in described work cylinder barrel, guide assemblies comprises with the work guide holder housing that is fixedly connected with of cylinder barrel and is arranged at the rubber be slidably matched with piston rod in guide holder housing;
Further, described oil storage cylinder barrel overcoat is provided with and is slidably matched and the protection cylinder barrel sealed with oil storage cylinder barrel external cylindrical surface; Described protection cylinder barrel upper end is fixedly connected with hollow rod body upper end;
Further, described piston rod is positioned at the surface of restoring chamber and is provided with positioning ring, is provided with return spring between positioning ring and work cylinder barrel upper end;
The beneficial effects of the utility model are: automobile mazy type vibration damper of the present utility model, when wheel is subject to impacting, promotion piston body moves reciprocatingly by piston rod in active chamber, the throttle orifice of fluid in vibration damper repeatedly on piston body and filler opening flow back and forth at compression chamber and restoring between chamber, mazy type throttle orifice of the present utility model has multiple right angles bend, when fluid flows through mazy type throttle orifice, flow through a series of right angle bend by forcing fluid and produce damping force, reach the object of step pressure reducing simultaneously, the resistance of these bends makes the pressure of fluid maintain on the pressure for vaporization of medium all the time, thus avoid cavitation phenomenons, reduce the vibrations of vibration damper simultaneously.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is A place partial enlarged drawing in Fig. 1;
Fig. 3 is the sectional view of piston lower body.
Embodiment
Fig. 1 is structural representation of the present utility model, and Fig. 2 is A place partial enlarged drawing in Fig. 1, and Fig. 3 is the sectional view of piston lower body 6.As shown in the figure, in the present embodiment, automobile mazy type vibration damper comprises piston body, be fixedly connected on the piston rod of piston body, work cylinder barrel 4 and oil storage cylinder barrel 3, it is inner that work cylinder barrel 4 is located at oil storage cylinder barrel 3, oil storage cylinder barrel 3 is fixedly connected with the lower end of work cylinder barrel 4 and is sealed by a black box I 1, piston body and piston rod are stretched in work cylinder barrel 4 and work cylinder barrel 4 upper end and are sealed by a black box II 11 from the upper end of work cylinder barrel 4, work cylinder barrel 4 inner chamber is divided into recovery chamber 18 and compression chamber 5 by piston body up and down, the part that oil storage cylinder barrel 3 inner chamber is positioned at beyond work cylinder barrel 4 forms shoe cream room, work cylinder barrel 4 sidewall is provided with the return opening 2 being communicated with compression chamber 5 and shoe cream room, piston body comprises columned piston upper body 7 and piston lower body 6, piston upper body 7 inner cylindrical surface and piston lower body 6 external cylindrical surface are slidably matched, piston cavity 16 is formed between piston upper body 7 and piston lower body 6, piston lower body 6 sidewall is provided with the mazy type throttle orifice 19 being communicated with compression chamber 5 and piston cavity 16, piston upper body 7 end face is provided with the filler opening 17 being communicated with and restoring chamber 18 and piston cavity 16, piston upper body 7 is by having the labyrinth disc 22 of mazy type groove and replacing stacking forming for the sealing plate of sealing labyrinth dish 22, fixed by vacuum diffusion welding or brazing between labyrinth disc 22 and sealing plate, " upper end " as herein described is for pointing to one end of B in Fig. 1, " lower end " is for pointing to the one end of " C " in figure, when wheel is subject to impacting, promotion piston body moves reciprocatingly by piston rod in active chamber, the throttle orifice 19 of fluid in vibration damper repeatedly on piston body and filler opening 17 flow back and forth at compression chamber 5 and restoring between chamber 18, mazy type throttle orifice 19 of the present utility model has multiple right angles bend, when fluid flows through mazy type throttle orifice 19, flow through a series of right angle bend by forcing fluid and produce damping force, reach the object of step pressure reducing simultaneously, the resistance of these bends makes the pressure of fluid maintain on the pressure for vaporization of medium all the time, thus avoid cavitation phenomenons, reduce the vibrations of vibration damper simultaneously.
In the present embodiment, multiple runners 20 that described mazy type throttle orifice 19 comprises sprue 21 and is connected with described sprue 21 outer end, fluid flows through sprue 21 again after runner 20 crosses, when fluid crosses, fierce collision will be there is in multiply fluid, the flow velocity of fluid is significantly reduced, thus generation damping force, when vehicle suspension is subject to larger impact (as vehicle is being crossed at a high speed in curved process), piston body is larger relative to the speed of working cylinder, oil liquid pressure moment in active chamber significantly rises, the oil flow now flowing through throttle orifice 19 is very fast, when multiply fluid crosses and clashes into, the kinetic energy loss of fluid is larger, namely the damping force of vibration damper generation is larger, vibration damper is made to become " firmly ", ensure that suspension is to the secure support of vehicle body, improve the stability of vehicle body, when the impact that vehicle suspension is subject to is less, after fluid crosses and clashes into, kinetic energy loss is little, the damping force of vibration damper is also corresponding less, vibration damper is made to become " soft ", ensure the riding comfort of vehicle.
In the present embodiment, described sprue 21 the inner is connected to piston cavity 16, and runner 20 outer end is connected to pressure chamber, make the piston body of vibration damper when descending, fluid can be introduced into runner 20, cross laggard enter sprue 21, make fluid cross clash into formed damping.
In the present embodiment, described mazy type throttle orifice 19 is axially uniformly distributed multiple along piston lower body 6, when piston lower body 6 is relative to piston upper body 7 upward sliding, the inner cylindrical surface of piston upper body 7 will block a part of throttle orifice 19, thus reduce the useful area that fluid flows through throttle orifice 19, increase the damping force of vibration damper, therefore, relative position between adjustment piston lower body 6 and piston upper body 7, can regulate the damping force of the vibration damper in the present embodiment.
In the present embodiment, described piston rod comprises hollow rod body 8 and is arranged at the push rod 9 that is slidably matched with hollow rod body 8 in hollow rod body 8 and push rod 9 stretches out hollow rod body 8 lower end, hollow rod body 8 lower end is fixed in piston upper body 7, piston lower body 6 is fixed on push rod 9 lower end, push rod 9 can promote piston lower body 6 and move relative to piston upper body 7, thus damping adjusting power.
In the present embodiment, it is outer and be threaded connection adjusting knob 15 that hollow rod body 8 is stretched out in described push rod 9 upper end, rotation of adjustment knob 15 can make push rod 9 slide relative to hollow rod body 8 vertically, and then the relative position between regulating piston lower body 6 and piston upper body 7, to regulate damping force of vibration damper size.
In the present embodiment, described mazy type throttle orifice 19 is evenly distributed with multiple along piston upper body 7 circumference, the throttle orifice 19 of this setting type can improve piston body stress operationally, make piston body operationally its radial force compare balance, the wearing and tearing of Long-Time Service back piston surface are also relatively more even, extend its working life.
In the present embodiment, guide assemblies 10 is provided with in described work cylinder barrel 4, guide assemblies 10 comprises with the work guide holder housing that is fixedly connected with of cylinder barrel 4 and is arranged at the rubber be slidably matched with piston rod in guide holder housing, when piston body and piston rod are when working to-and-fro motion in cylinder barrel 4, when piston rod being subject to flexural load to a certain extent, the stressed of piston body surface will be extremely uneven, after Long-Time Service, the working life of piston body will shorten greatly, and in the recovery chamber 18 of working cylinder, near working cylinder upper end, one guide assemblies 10 is set, when piston body is in reciprocatory movement, guide assemblies 10 can overcome the flexural load of piston rod, ensure that piston body can accurately along working cylinder axial-movement, rubber in guide holder housing can reduce the wearing and tearing of itself and piston rod surface, avoid causing damage to piston rod surface in the course of the work simultaneously.
In the present embodiment; be arranged with outside described oil storage cylinder barrel 3 and be slidably matched and the protection cylinder barrel 13 sealed with oil storage cylinder barrel 3 external cylindrical surface; protection cylinder barrel 13 upper end is fixedly connected with hollow rod body 8 upper end; protection cylinder barrel 13 can avoid piston rod to stretch out oil storage cylinder barrel 3 rear surface impaired; on the other hand; vibration damper is after long-time running; fluid can leak out unavoidably from the black box of oil storage cylinder barrel 3 upper end; and protect cylinder barrel 13 can avoid oozing out vibration damper from the fluid of oil storage cylinder barrel 3 leak, avoid its environment to external world.
In the present embodiment, described piston rod is positioned at the surface of restoring chamber 18 and is provided with positioning ring 14, return spring 12 is provided with between positioning ring 4 and work cylinder barrel 4 upper end, when car body suspension is impacted, after the descending end of piston body, it is up that return spring 12 will promote piston rod, make piston body return to initial position.
Claims (10)
1. an automobile mazy type vibration damper, is characterized in that: comprise piston body, be fixedly connected on the piston rod of piston body, work cylinder barrel and oil storage cylinder barrel; It is inner that described work cylinder barrel is located at oil storage cylinder barrel; Oil storage cylinder barrel to be fixedly connected with and by black box I sealing with the lower end of work cylinder barrel, described piston body and piston rod stretch in work cylinder barrel and work cylinder barrel upper end by black box II sealing from the upper end of work cylinder barrel, clutch release slave cylinder tube inner chamber is divided into recovery chamber and compression chamber by described piston body up and down; The part that oil storage cylinder tube inner chamber is positioned at beyond work cylinder barrel forms shoe cream room; Described work cylinder barrel sidewall is provided with the return opening being communicated with compression chamber and shoe cream room;
Described piston body comprises columned piston upper body and piston lower body, piston upper body inner cylindrical surface and piston lower body external cylindrical surface are slidably matched, piston cavity is formed between piston upper body and piston lower body, under piston, body sidewall is provided with the mazy type throttle orifice being communicated with compression chamber and piston cavity, and piston upper body end face is provided with the filler opening being communicated with and restoring chamber and piston cavity.
2. automobile mazy type vibration damper according to claim 1, is characterized in that: multiple runners that described mazy type throttle orifice comprises sprue and is connected with described sprue outer end.
3. automobile mazy type vibration damper according to claim 2, is characterized in that: described sprue the inner is connected to piston cavity, and runner outer end is connected to pressure chamber.
4. automobile mazy type vibration damper according to claim 3, is characterized in that: described mazy type throttle orifice is axially uniformly distributed multiple along piston lower body.
5. automobile mazy type vibration damper according to claim 4, is characterized in that: described piston rod comprises hollow rod body and is arranged at the push rod that is slidably matched with hollow rod body in hollow rod body and push rod stretches out hollow rod body lower end; Hollow rod body lower end is fixed in described piston upper body, and piston lower body is fixed on push rod lower end.
6. automobile mazy type vibration damper according to claim 5, is characterized in that: it is outer and be threaded connection adjusting knob that hollow rod body is stretched out in described push rod upper end.
7. automobile mazy type vibration damper according to claim 6, is characterized in that: described mazy type throttle orifice is evenly distributed with multiple along piston upper body circumference.
8. automobile mazy type vibration damper according to claim 7, is characterized in that: be provided with guide assemblies in described work cylinder barrel; Described guide assemblies comprises with the work guide holder housing that is fixedly connected with of cylinder barrel and is arranged at the rubber be slidably matched with piston rod in guide holder housing.
9. automobile mazy type vibration damper according to claim 8, is characterized in that: described oil storage cylinder barrel overcoat is provided with and is slidably matched and the protection cylinder barrel sealed with oil storage cylinder barrel external cylindrical surface; Described protection cylinder barrel upper end is fixedly connected with hollow rod body upper end.
10. automobile mazy type vibration damper according to claim 9, is characterized in that: described piston rod is positioned at the surface of restoring chamber and is provided with positioning ring, is provided with return spring between positioning ring and work cylinder barrel upper end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420520935.8U CN204113992U (en) | 2014-09-11 | 2014-09-11 | Automobile mazy type vibration damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420520935.8U CN204113992U (en) | 2014-09-11 | 2014-09-11 | Automobile mazy type vibration damper |
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| Publication Number | Publication Date |
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| CN204113992U true CN204113992U (en) | 2015-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420520935.8U Active CN204113992U (en) | 2014-09-11 | 2014-09-11 | Automobile mazy type vibration damper |
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| CN (1) | CN204113992U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107975563A (en) * | 2017-11-27 | 2018-05-01 | 常州大学 | A kind of viscous damper based on fluid momentum principle of reflection |
-
2014
- 2014-09-11 CN CN201420520935.8U patent/CN204113992U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107975563A (en) * | 2017-11-27 | 2018-05-01 | 常州大学 | A kind of viscous damper based on fluid momentum principle of reflection |
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