CN209083886U - A kind of inverted hydraulic damping damper - Google Patents

Abstract

The utility model discloses a kind of inverted hydraulic damping dampers, the inverted hydraulic damping damper is related to power-equipment field, including outer sleeve, the inner sleeve being plugged in outer sleeve, the oil sealing being set between outer sleeve and inner sleeve, the piston tube being plugged in inner sleeve is provided in outer sleeve, one end of inner sleeve is provided with the damping head of the inner wall of the outer wall and outer sleeve that are connected to piston tube, one end of piston tube is provided with the seal assembly in inner sleeve, the inside of inner sleeve is divided into mutual disconnected damping cavity and telescopic cavity by seal assembly, deflector hole and several damping holes for being connected to damping cavity of the inside of several connection outer sleeves are provided in piston tube；By the triple seal for damping head, seal assembly and oil sealing, the leakage of limitation hydraulic oil guarantees the damping effect of damper to guarantee the pressure difference environment inside damper, reduce amplitude and energy that unsteadiness of wheels is transmitted to vehicle body, improves the stationarity and comfort of traveling.

Description

A kind of inverted hydraulic damping damper

Technical field

The utility model relates to power-equipment field, in particular to a kind of inverted hydraulic damping damper.

Background technique

Hydra-shock absorber is current motorcycle using most common damper, and the cylinder barrel upper end of hydraulic damper is closing , and there are apertures on valve, when the road surface that wheel encounters protrusion is impacted, cylinder barrel is moved up, and piston is in inner cylinder tube In opposite move down.At this point, piston valve is rushed to open upwards, the oil of the intracavitary piston underside of inner cylinder tube is not flowed by any resistance To piston on the side.Meanwhile this part oil flows into the oil pocket between inside and outside cylinder barrel also by the aperture on bottom valve, this Sample has just effectively decayed concave-convex road surface to the impact load of vehicle；And when wheel cross raised ground toward fall when, cylinder barrel It can and then move down, piston will be moved up relative to cylinder barrel.When piston moves up, oil washes the valve stream of bottom open Downside is flowed to through the aperture on piston valve to the oil of inner cylinder tube, while inner cylinder tube piston on the side.At this time when oil liquid flows through aperture In the process, it will receive very big resistance, this creates the terminal preferable damping actions, play the purpose of damping.

Authorization Notice No. is that the Chinese patent of CN202032034U discloses a kind of damping on motorcycle vibration absorber Device, including fuel tank, piston in combination, floating piston and hanging ring welding combination, the piston in combination and floating piston are fitted in In the fuel tank, gas vent is provided on the floating piston and is sealed by sealing screw, the floating piston with hang Boxing connects and is provided with repairing spring between combination.

It is in place of the deficiencies in the prior art, above-mentioned damper passes through reciprocating motion of the floating piston in fuel tank, from And thermal energy is converted vibrational energy into using damping force, reduce amplitude and energy that unsteadiness of wheels is transmitted to vehicle body；In the process, Hydraulic oil is easy to flow out between the floating piston cooperation gap combined with fuel tank and hanging ring welding, the sealing performance of damper It is bad, decline so as to cause the pressure difference of floating piston two sides, influences the damping effect of damper.

Utility model content

The purpose of the utility model is to provide a kind of inverted hydraulic damping dampers, and which solve existing damper appearances The problem of easy oil leakage, has the advantages that improve the sealing performance of damper.

The above-mentioned technical purpose of the utility model has the technical scheme that

A kind of inverted hydraulic damping damper, including outer sleeve, the inner sleeve being plugged in the outer sleeve, is set to Oil sealing between the outer sleeve and the inner sleeve is provided with the piston being plugged in the inner sleeve in the outer sleeve Pipe, one end of the inner sleeve is provided with the damping head of the inner wall of the outer wall for being connected to the piston tube and the outer sleeve, institute The one end for stating piston tube is provided with the seal assembly in the inner sleeve, and the seal assembly is by the inside of the inner sleeve It is divided into mutual disconnected damping cavity and telescopic cavity, the water conservancy diversion of the inside of several connection outer sleeves is provided in the piston tube Hole and several damping holes for being connected to the damping cavity.

Using the above scheme, when inner sleeve is pressurized, shoe cream room volume reduces, while damping cavity volume increases to form part very Sky, the hydraulic oil in shoe cream room pass sequentially through deflector hole, piston tube cavity and damping hole, eventually enter under the action of pressure difference In damping cavity, to reduce amplitude and energy that unsteadiness of wheels is transmitted to vehicle body；In the process, by damping head and piston tube and Close abutting between the bearing surface of outer sleeve, the hydraulic oil limited between piston tube and outer sleeve flow to matching between bearing surface Between joint close gap, while damping cavity and telescopic cavity being kept apart using seal assembly, further prevents the leakage of hydraulic oil, pass through The triple seal for damping head, seal assembly and oil sealing, limits the leakage of hydraulic oil, to guarantee the pressure difference ring inside damper Border guarantees the damping effect of damper, reduces amplitude and energy that unsteadiness of wheels is transmitted to vehicle body, improves the stationarity of traveling and relaxes Adaptive.

Further preferably are as follows: one end of the inner sleeve is located at the outside of the outer sleeve and is closely embedded with front fork tube, The first elastic component is provided in the telescopic cavity, the end of the piston tube is provided with the baffle in the telescopic cavity, institute The axial end face of the baffle is fixed in the one end for stating the first elastic component, the other end be fixed on the front fork tube axial end face, The damping head is forced axially to slide along the piston tube.

Using the above scheme, when inner sleeve is pressurized, the first elastic component is compressed, and cushioned resistance is provided, and shoe cream room volume subtracts Small, chamber air is compressed, and intracavitary hydraulic oil enters piston tube cavity by deflector hole.Damping cavity volume increases simultaneously, shape Resistance to compression pression is generated by two damping hole oil suctions at parital vacuum；When recovery, under the restoring force effect of the first elastic component, resistance Buddhist nun's chamber volume is small, and intracavitary oil pressure increases, and can only pass sequentially through damping hole and piston tube cavity is expelled in shoe cream room, is formed and is restored Resistance.In the process, damper converts vibrational energy into thermal energy using damping force, reduces the vibration that unsteadiness of wheels is transmitted to vehicle body Width and energy improve the stationarity and comfort of traveling.

Further preferably are as follows: the seal assembly include the stationary ring for being fixed on the outer wall of the piston tube, be socketed on it is described Rubber standoff and the second elastic component outside piston tube, be fixed on the inner sleeve inner wall baffle ring, be set to the baffle ring The rotating ring of axial end face；The rubber standoff includes the neck along both head envelope portion, axis part and connection；The axis part it is interior Wall is provided with the mounting groove of annular indent, and the neck is provided with the recessing groove of the annular of the connection mounting groove, and described second Elastic component is embedded in the mounting groove, head envelope portion is forced to be connected to the axial end face of the rotating ring and the axis of the stationary ring To end face.

Using the above scheme, by the way that the second elastic component is arranged, so that between head envelope portion and the bearing surface of rotating ring and stationary ring Enough precompressions are kept, to form good seal combination；When inner sleeve axial movement, it is socketed in piston tube Rubber standoff is on the one hand since pre- deformation can provide compensation, and on the other hand the neck with recessing groove can be produced with opposing pistons pipe Raw to be parallel to the flexible of axial line, simultaneously because recessing groove is connected to mounting groove, neck can drive installation internal in moving process The change in space, so that the moveable space of rotating ring is supplied to, to can mend always to compensation between centers is generated between bearing surface It repays；In the process, the hydraulic oil in damping cavity is by stationary ring and the stationary plane of piston tube, the bearing surface, dynamic of stationary ring and head envelope portion The stationary plane of ring and the bearing surface in head envelope portion, baffle ring and inner sleeve intercepts layer by layer, thus guarantee the pressure difference environment inside damper, Guarantee the damping effect of damper, reduce unsteadiness of wheels and be transmitted to the amplitude and energy of vehicle body, improves the stationarity of traveling and comfortable Property.

Further preferably are as follows: second elastic component is irregular pitch helical spring, and the pitch of second elastic component First it is incremented by and successively decreases afterwards.

Using the above scheme, it is small to be not only able to satisfy deflection hour rigidity simultaneously for irregular pitch helical spring, but also is able to satisfy change Rigidity big requirement when shape amount is big；In elastic component and rubber standoff simultaneous retractable, connection of the elastic component to neck and axis part The radial pressure at place reduces, to cut down the radial-deformation of rubber standoff, guarantees supporting for head envelope portion and rotating ring and stationary ring with this Compression effect between junction, to effectively avoid the leakage of hydraulic oil.

Further preferably are as follows: the axial end face of the stationary ring is provided with the first end sealing groove of annular indent, the rotating ring Axial end face is provided with the second end sealing groove of annular indent, and the both ends in head envelope portion are closely embedded at first end seal respectively In slot and the second end sealing groove.

Using the above scheme, by setting even end seal slot, directly increase the contact area in head envelope portion and stationary ring and rotating ring, On the basis of abutting sealing between original axial end face, increases the abutting between inner radial wall and radial outer wall, further mention Highly dense sealing mechanism effectively avoids the leakage of hydraulic oil to the sealing effect of hydraulic oil.

Further preferably are as follows: it is provided with and is tightly sleeved in the spring base outside the piston tube in the mounting groove, described The axial end face of the mounting groove is fixed in one end of two elastic components, the other end is fixed on the axial end face of the spring base, compels The axial end face of the spring base is set to be connected to the mounting groove close to the axial end face of the stationary ring side.

Using the above scheme, the second elastic component is directly anchored on spring base, it can be to avoid the abutting part of rubber standoff Interference of the deformation to the second elastic component, the second elastic component is effectively ensured to the precompression between each face of successively decreasing, further mentions Highly dense sealing mechanism effectively avoids the leakage of hydraulic oil to the sealing effect of hydraulic oil.

Further preferably are as follows: the axial end face of the stationary ring is fixed with retaining ring, and the axial end face of the retaining ring is fixed with set The first interstage sleeve being connected to outside the stationary ring and head envelope portion, the inner wall of the inner sleeve, which is fixed with, is socketed on the rotating ring and institute State the second interstage sleeve outside the first interstage sleeve；The end of second interstage sleeve is recessed limit terminal, the inner wall of the limit terminal It is connected to the outer wall of first interstage sleeve.

Using the above scheme, the first interstage sleeve and the second interstage sleeve are during mutual abut always to limit the inner wall of terminal Outer wall with the second interstage sleeve is abutment surface, so that can form good first resealing between two seal assemblies.

Further preferably are as follows: the end of first interstage sleeve is recessed mounting terminal, and the outer wall in head envelope portion is close It is connected to the inner wall of the mounting terminal.

Using the above scheme, the first interstage sleeve and head envelope portion during mutual abut always with the inner wall of mounting terminal and The outer wall in head envelope portion is abutment surface, so that can form good second resealing between seal assembly.

Further preferably are as follows: the junction of first interstage sleeve and the retaining ring is recessed positioning region, the positioning region Inner wall be connected to the outer wall of the stationary ring.

Using the above scheme, the Light deformation that stationary ring is born is compensated by positioning region, can directly be avoided between stationary ring and retaining ring Interference of the gap to sealing performance, to form good seal combination.

Further preferably are as follows: first interstage sleeve and the retaining ring are integrally formed, second interstage sleeve and the baffle ring one It is body formed；Washer is fixed between the baffle ring and the rotating ring, the inner wall of the washer is closely connected to the outer of the rotating ring Wall, the outer wall of the washer are connected to the outer wall of second interstage sleeve.

Using the above scheme, the movement routine for increasing rotating ring using washer keeps rotating ring and gear while abutting sealing Micro- deformability between circle, so that the sealing effect between rotating ring and rubber standoff and spring base is more preferable.

In conclusion the utility model has the following beneficial effects:

1. the leakage of hydraulic oil is limited, to guarantee damper by the triple seal of damping head, seal assembly and oil sealing Internal pressure difference environment, guarantees the damping effect of damper；

2. by the bearing surface of the first interstage sleeve and the second interstage sleeve, the bearing surface of the first interstage sleeve and head envelope portion, axis part and moving The bearing surface of ring and stationary ring forms triple seal, limits the leakage of hydraulic oil at sealing mechanism, guarantees the damping effect of damper.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the hydraulic damping damper of embodiment；

Fig. 2 is the enlarged drawing in the portion A of Fig. 1, for showing the connection relationship between sealing mechanism, piston tube and inner sleeve.

In figure, 1, outer sleeve；2, inner sleeve；21, telescopic cavity；22, baffle；23, the first elastic component；24, front fork tube；3, living Plug pipe；4, oil sealing；5, sealing mechanism；51, retaining ring；52, stationary ring；521, first end sealing groove；53, rubber standoff；531, axis part； 532, head envelope portion；533, neck；534, mounting groove；535, recessing groove；54, the second elastic component；541, spring base；55, baffle ring； 56, washer；57, rotating ring；571, second end sealing groove；58, the first interstage sleeve；581, mounting terminal；582, positioning region；59, second gear Set；591, terminal is limited；6, head is damped；7, damp channel；71, shoe cream room；72, damping cavity；73, deflector hole；74, damping hole.

Specific embodiment

The utility model is described in further detail below in conjunction with attached drawing.

A kind of inverted hydraulic damping damper, as shown in Figure 1, being mounted on vehicle frame including what is set gradually from outside to inside Outer sleeve 1, be mounted in vehicle bridge inner sleeve 2, be fixed in outer sleeve 1 piston tube 3, be set to 1 lower end of outer sleeve Oil sealing 4, be set to piston tube 3 lower end sealing mechanism 5.Inner sleeve 2 can be moved axially relative to outer sleeve 1 and piston tube 3, The upper end of inner sleeve 2 is provided with the damping head 6 of the inner wall of the inner wall for being connected to outer sleeve 1 and piston tube 3, is arranged in piston tube 3 There is the damp channel 7 that the oil for damping 6 two sides of head mutually circulates.

Damping head 6 and sealing mechanism 5 will be divided into from top to down between piston tube 3 and inner sleeve 2 and outer sleeve 1 and be located at Shoe cream room 71 between piston tube 3 and outer sleeve 1, is located at inner sleeve 2 at the damping cavity 72 between piston tube 3 and inner sleeve 2 Interior telescopic cavity 21.Piston tube 3 is fixedly connected by stud with outer sleeve 1, and there are two the top settings of piston tube 3 and shoe cream room The deflector hole 73 of 71 connections, the damping hole 74 that there are two the lower part settings of piston tube 3 is connected to damping cavity 72, damp channel 7 In shoe cream room 71, the inside of piston tube 3 and damping cavity 72.

The upper end of inner sleeve 2 is located at the outside of outer sleeve 1 and is closely embedded with the front fork tube 24 being installed in vehicle bridge.It stretches The first elastic component 23 is provided in contracting chamber 21, the lower end of piston tube 3 is provided with the baffle 22 in telescopic cavity 21, the first elasticity The axial end face of baffle 22 is fixed in one end of part 23, the other end is fixed on the axial end face of front fork tube 24, forces damping 6 edge of head The axial sliding of piston tube 3.Wherein, the first elastic component 23 is spring.

When inner sleeve 2 is pressurized, the first elastic component 23 is compressed, and provides cushioned resistance, and 71 volume of shoe cream room reduces, intracavitary sky Gas is compressed, and intracavitary hydraulic oil enters 3 inner cavity of piston tube by deflector hole 73.72 volume of damping cavity increases simultaneously, formation office Portion's vacuum generates resistance to compression pression by two damping holes, 74 oil suction.When damper restores, in the reply masterpiece of the first elastic component 23 Under, 72 volume of damping cavity is small, and intracavitary oil pressure increases, and can only pass sequentially through damping hole 74 and 3 inner cavity of piston tube is expelled to oil storage In chamber 71, is formed and restore resistance.In the process, damper converts vibrational energy into thermal energy using damping force, reduces wheel Vibration is transmitted to the amplitude and energy of vehicle body, improves the stationarity and comfort of traveling.

Referring to Fig. 2, seal assembly includes being fixed on the retaining ring 51 of the outer wall of piston tube 3 and stationary ring 52, being socketed on piston tube 3 Outer rubber standoff 53 and the second elastic component 54, be fixed on inner sleeve 2 inner wall baffle ring 55, be fixed on the axial end of baffle ring 55 The washer 56 in face, be fixed on retaining ring 51 axial end face rotating ring 57.Wherein, rubber standoff 53 includes connecing along head envelope portion 532, axis The neck 533 in portion 531 and connection the two.

The axial end face of retaining ring 51 is fixed with the first interstage sleeve 58 being socketed on outside stationary ring 52 and rubber standoff 53, inner sleeve 2 Inner wall be fixed with and be tightly sleeved in the second interstage sleeve 59 outside retaining ring 51 and the first interstage sleeve 58；Wherein the first interstage sleeve 58 and retaining ring 51 It is integrally formed, the second interstage sleeve 59 is integrally formed with baffle ring 55.The end of first interstage sleeve 58 is recessed mounting terminal 581, head envelope The outer wall in portion 532 is closely connected to the inner wall of mounting terminal 581, to form second layer sealing.First interstage sleeve 58 and retaining ring 51 Junction be recessed positioning region 582, the inner wall of positioning region 582 is connected to the outer wall of stationary ring 52.The end of second interstage sleeve 59 Be recessed limit terminal 591, limit terminal 591 inner wall be connected to the first interstage sleeve 58 be located at mounting terminal 581 and positioning Outer wall between portion 582, to form first layer sealing.Washer 56 is L-shaped along the section for crossing axle center, and the inner wall of washer 56 is tight The close outer wall for being connected to rotating ring 57, washer 56 outer wall be closely connected to the inner wall of the second interstage sleeve 59, it is dynamic using the increase of washer 56 The movement routine of ring 57 keeps micro- deformability between rotating ring 57 and retaining ring 56 while abutting sealing.

The axial end face of stationary ring 52 is provided with the first end sealing groove 521 of annular indent, and the axial end face of rotating ring 57 is provided with The both ends of the second end sealing groove 571 of annular indent, head envelope portion 532 are closely embedded at first end sealing groove 521 and the second end seal respectively In slot 571, to form third layer sealing.The inner wall of axis part 531 is provided with the mounting groove 534 of annular indent, mounting groove 534 It is inside provided with and is tightly sleeved in the spring base 541 outside piston tube 3, the axis of mounting groove 534 is fixed in one end of the second elastic component 54 The axial end face of spring base 541 is fixed on to end face, the other end, the axial end face of spring base 541 is forced to be connected to mounting groove 534 Axial end face close to 52 side of stationary ring.Neck 533 is provided with the recessing groove 535 of the annular of connection mounting groove 534, the second elasticity Part 54 is irregular pitch helical spring, and the pitch of the second elastic component 54 is first incremented by and successively decreases afterwards.Pass through the second elastic component 54 and rubber Glue bracket 53 cooperates, so that the enough precompressions of holding between head envelope portion 532 and rotating ring 57 and the bearing surface of stationary ring 52, from And form good seal combination.

This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but As long as within the protection scope of the present utility model all by the protection of Patent Law.

Claims (10)

1. a kind of inverted hydraulic damping damper, including outer sleeve (1), the inner sleeve being plugged in the outer sleeve (1) (2), the oil sealing (4) being set between the outer sleeve (1) and the inner sleeve (2), it is characterized in that: in the outer sleeve (1) It is provided with the piston tube (3) being plugged in the inner sleeve (2), one end of the inner sleeve (2), which is provided with, is connected to the work The damping head (6) of the inner wall of the outer wall and outer sleeve (1) of plug pipe (3), one end of the piston tube (3) is provided with positioned at institute The seal assembly in inner sleeve (2) is stated, the inside of the inner sleeve (2) is divided into mutual disconnected damping cavity by the seal assembly (72) and telescopic cavity (21) deflector hole (73) of the inside of several connection outer sleeves (1), is provided on the piston tube (3) With several damping holes (74) for being connected to the damping cavity (72).

2. a kind of inverted hydraulic damping damper according to claim 1, it is characterized in that: the one of the inner sleeve (2) End is located at the outside of the outer sleeve (1) and is closely embedded with front fork tube (24), is provided with the first bullet in the telescopic cavity (21) Property part (23), the end of the piston tube (3) is provided with the baffle (22) in the telescopic cavity (21), first elasticity The axial end face of the baffle (22) is fixed in one end of part (23), the other end is fixed on the axial ends of the front fork tube (24) Face forces the damping head (6) axially to slide along the piston tube (3).

3. a kind of inverted hydraulic damping damper according to claim 2, it is characterized in that: the seal assembly includes solid Due to the outer wall of the piston tube (3) retaining ring (51) and stationary ring (52), be socketed on the rubber standoff of the piston tube (3) outside (53) and the second elastic component (54), be fixed on the inner sleeve (2) inner wall baffle ring (55), be set to the baffle ring (55) The rotating ring (57) of axial end face；The rubber standoff (53) includes along head envelope portion (532), axis part (531) and connection the two Neck (533)；The inner wall of the axis part (531) is provided with the mounting groove (534) of annular indent, neck (533) setting There is the recessing groove (535) of the annular of the connection mounting groove (534), second elastic component (54) is embedded at the mounting groove (534) in, head envelope portion (532) is forced to be connected to the axial end face of the rotating ring (57) and the axial end of the stationary ring (52) Face.

4. a kind of inverted hydraulic damping damper according to claim 3, it is characterized in that: second elastic component (54) First it is incremented by and successively decreases afterwards for the pitch of irregular pitch helical spring, and second elastic component (54).

5. a kind of inverted hydraulic damping damper according to claim 3, it is characterized in that: the axial direction of the stationary ring (52) End face is provided with the first end sealing groove (521) of annular indent, and the axial end face of the rotating ring (57) is provided with the of annular indent Two end seal slots (571), the both ends in head envelope portion (532) are closely embedded at the first end sealing groove (521) and described respectively In two end seal slots (571).

6. a kind of inverted hydraulic damping damper according to claim 3, it is characterized in that: in the mounting groove (534) It is provided with the spring base (541) being tightly sleeved in the piston tube (3) outside, institute is fixed in one end of second elastic component (54) State the axial end face of mounting groove (534), the other end is fixed on the axial end face of the spring base (541), forces the spring base (541) axial end face is connected to the axial end face of the mounting groove (534) close to the stationary ring (52) side.

7. a kind of inverted hydraulic damping damper according to claim 3, it is characterized in that: the axial direction of the stationary ring (52) End face is fixed with retaining ring (51), and the axial end face of the retaining ring (51), which is fixed with, is socketed on the stationary ring (52) and head envelope portion (532) the first interstage sleeve (58) outside, the inner wall of the inner sleeve (2), which is fixed with, is socketed on the rotating ring (57) and the first gear Cover second interstage sleeve (59) of (58) outside；The end of second interstage sleeve (59) is recessed limit terminal (591), the positive stop end The inner wall of sub (591) is connected to the outer wall of first interstage sleeve (58).

8. a kind of inverted hydraulic damping damper according to claim 7, it is characterized in that: first interstage sleeve (58) End is recessed mounting terminal (581), and the outer wall in head envelope portion (532) is closely connected to the mounting terminal (581) Inner wall.

9. a kind of inverted hydraulic damping damper according to claim 7, it is characterized in that: first interstage sleeve (58) with The junction of the retaining ring (51) is recessed positioning region (582), and the inner wall of the positioning region (582) is connected to the stationary ring (52) outer wall.

10. a kind of inverted hydraulic damping damper according to claim 7, it is characterized in that: first interstage sleeve (58) It is integrally formed with the retaining ring (51), second interstage sleeve (59) and the baffle ring (55) are integrally formed；The baffle ring (55) and It is fixed with washer (56) between the rotating ring (57), the inner wall of the washer (56) is closely connected to the outer of the rotating ring (57) Wall, the outer wall of the washer (56) are connected to the outer wall of second interstage sleeve (59).