CN218177811U

CN218177811U - Combined oil seal structure of magnetorheological damper

Info

Publication number: CN218177811U
Application number: CN202222162644.3U
Authority: CN
Inventors: 杜杰; 苏超; 李玉胜
Original assignee: Yantai Runfuxiang Oil Seal Co ltd
Current assignee: Yantai Runfuxiang Oil Seal Co ltd
Priority date: 2022-08-17
Filing date: 2022-08-17
Publication date: 2022-12-30
Anticipated expiration: 2032-08-17

Abstract

The utility model relates to a magneto rheological damper combined oil seal structure, which relates to the technical field of seal rings and comprises a first seal ring and a second seal ring which are adjacently arranged, wherein the first seal ring comprises a first framework, a first rubber layer and at least one first holding spring, and the first seal ring is provided with at least one main seal lip; the second sealing ring comprises a second framework, a second rubber layer and a second holding spring, and is provided with an auxiliary sealing lip which is connected with a lip piece. A magnetorheological suspensions combination formula oil blanket structure, bearing capacity is big, can satisfy the sealed requirement to magnetorheological suspensions.

Description

Combined oil seal structure of magnetorheological damper

Technical Field

The utility model relates to an oil blanket structure especially relates to a combined oil blanket structure of magnetic current becomes shock absorber.

Background

The damper is an important part on the vehicle, is directly related to the riding comfort of the vehicle, and improves the performance of a suspension system of the automobile to a new height by the magnetorheological damper. The magneto-rheological damper replaces traditional liquid in the damper with controllable magneto-rheological fluid, monitors the running states of a road surface and an automobile through a sensor, and continuously changes the damping characteristic of the magneto-rheological fluid, so that the buffering effect of the damper is optimized, and the riding comfort and the operation stability of the automobile are improved.

The kinematic viscosity of the magnetorheological fluid is adjusted by the change of current and voltage, and the design should be noted that: (1) Although the fluid has too high or too low kinematic viscosity to facilitate sealing, the magnetorheological damper should consider the sealing requirement when the magnetorheological fluid has too high kinematic viscosity; (2) The magnetorheological fluid contains metal particles, and when the magnetorheological fluid is used, the metal particles are prevented from scratching a sealing lip to cause the sealing failure of the shock absorber; (3) The magneto-rheological damper belongs to a single-cylinder damper type, has high internal pressure, and can meet the pressure requirement of the magneto-rheological damper when an oil seal is designed.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: in order to overcome the not enough that exists among the prior art, satisfy the sealed demand of magnetic current damper, the utility model provides a magnetic current damper combined type oil blanket structure.

The technical scheme is as follows: in order to achieve the above object, the utility model discloses a magnetorheological damper combined oil seal structure, including the first sealing washer, the first sealing washer includes first skeleton, first rubber layer and at least one first enclasping spring; the first rubber layer is attached to the outer surface of the first framework, and the first holding spring is annular and is connected with the first rubber layer; at least one main sealing lip is arranged at the joint surface of the first rubber layer and the surface to be sealed;

the second sealing ring comprises a second framework, a second rubber layer and a second holding spring; the second rubber layer is attached to the outer surface of the second framework, the second holding spring is annular and is connected with the second rubber layer, an auxiliary sealing lip is arranged on the attachment surface of the second rubber layer and the surface to be sealed, and a lip sheet is bonded on the surface of the auxiliary sealing lip;

the first sealing ring and the second sealing ring are axially adjacent to each other.

Preferably, the first skeleton is in an inverted "L" shape.

Preferably, the first rubber layer is arranged to cover the first framework, the first rubber layer comprises an outer ring layer, an inner ring layer and a connecting bridge layer which are integrally formed, the inner ring layer is arranged on the inner side of the outer ring layer, and the connecting bridge layer is arranged at one end of the outer ring layer and one end of the inner ring layer; the main seal lip is arranged on the inner side of the inner ring layer, and the first holding spring is connected to the inner ring layer.

Preferably, the second framework is in an upright L shape.

Preferably, the second rubber layer is arranged to cover the second framework, the second rubber layer is provided with a turn of flanging, and the flanging is arranged below the second framework; the auxiliary sealing lip is arranged on the inner side face of the turned-over edge, and the second holding spring and the lip piece are connected to the turned-over edge.

Preferably, first skeleton includes integrated into one piece's interior ring portion, outer ring portion and supporting part, interior ring portion sets up in the inboard of outer ring portion and sets up in the top of outer ring portion, the supporting part extends respectively to be connected with interior ring portion and supporting part.

Preferably, the first rubber layer is provided with a first contact pin and a second contact pin along the axial direction respectively, the first contact pin and the second contact pin are respectively arranged on two sides of the inner ring portion, and the first contact pin and the second contact pin are connected with a first holding spring respectively.

Preferably, the second skeleton is flat.

Preferably, the second rubber layer is attached to the inner side of the second bobbin.

Preferably, the lip is made of PTFE.

The utility model discloses a combined oil blanket mechanism of magneto rheological damper has following technological effect at least:

(1) The lip piece on the second sealing lip can shear viscous magnetorheological fluid, so that the amount of the magnetorheological fluid reaching the first sealing ring is reduced, and the combination of the first sealing ring and the second sealing ring obtains high sealing performance;

(2) The lip piece on the second sealing lip has better wear resistance, and can prevent or scrape the quantity of metal particles in the magnetorheological fluid from reaching the main sealing lip, so that the damage to the main sealing lip is reduced;

(3) The auxiliary sealing lip that the second sealing washer set up, lip thickness is big, can improve seal structure's bearing capacity.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;

fig. 2 is a schematic structural diagram of a second embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of a first seal ring according to a first embodiment of the present invention;

fig. 4 is a schematic cross-sectional view of a second seal ring according to a first embodiment of the present invention;

fig. 5 is a schematic cross-sectional view of a first seal ring according to a second embodiment of the present invention;

fig. 6 is a schematic cross-sectional view of a second seal ring according to a second embodiment of the present invention.

In the figure, 1, a first seal ring; 2. a second seal ring; 3. a first skeleton; 4. a first rubber layer; 5. a first clasping spring; 6. a primary seal lip; 7. a second skeleton; 8. a second rubber layer; 9. a second clasping spring; 10. an auxiliary sealing lip; 11. a lip piece; 12. an outer ring layer; 13. an inner ring layer; 14. connecting the bridge layer; 15. flanging; 16. an inner ring portion; 17. an outer ring portion; 18. a support portion; 19. a first contact pin; 20. and a second contact pin.

Detailed Description

The principles and features of the present invention are described below with reference to fig. 1-6, which are provided for illustration only and are not intended to limit the scope of the present invention.

The first embodiment is shown in the attached figures 1, 3 and 4 in the specification.

The utility model provides a magnetorheological damper combination formula oil blanket structure, includes first sealing washer 1 and second sealing washer 2, first sealing washer 1 and second sealing washer 2 combination accomplish the sealed function of magnetorheological damper.

Wherein, first sealing washer 1 includes first skeleton 3, first rubber layer 4 and the first spring 5 of holding tightly, the quantity of the first spring 5 of holding tightly is one. The first frame 3 is in an inverted L shape. The first rubber layer 4 is covered and connected to the surface of the first framework 3, the first rubber layer 4 can be sequentially divided into an outer ring layer 12, a connecting bridge layer 14 and an inner ring layer 13 along the radial direction of the first rubber layer, and the outer ring layer 12, the connecting bridge layer 14 and the inner ring layer 13 are integrally formed in a vulcanization mode. The inner race layer 13 is disposed radially inward of the outer race layer 12. As shown in fig. 3, the outer ring layer 12, the connecting bridge layer 14 and the inner ring layer 13 form an approximate "U" shaped structure. The inner side surface of the inner ring layer 13 is provided with a main sealing lip 6, and the main sealing lip 6 is abutted to the surface of a piston rod of the magnetorheological damper. The first holding spring 5 is connected to the outer surface of the inner ring layer 13, and under the action of the first holding spring 5, the main sealing lip 6 can be tightly attached to the outer surface of the piston rod of the magnetorheological damper.

The second sealing ring 2 comprises a second framework 7, a second rubber layer 8 and a second holding spring 9. The second framework 7 is in an upright L shape. The second rubber layer 8 is wrapped on the second framework 7, the second rubber layer 8 is provided with a circle of flanging 15, and the flanging 15 is arranged below the second framework 7. The inner side surface of the flange 15 is provided with an auxiliary sealing lip 10, and the auxiliary sealing lip 10 can improve the bearing capacity of the whole oil seal structure. The second holding spring 9 is connected to the outer side face of the flange 15, and the second holding spring 9 can ensure the surfaces of the auxiliary sealing lip 10 and the piston rod of the magnetorheological damper. A lip 11 is vulcanized and fixed on the auxiliary sealing lip 10. The lip 11 can cut viscous magnetorheological fluid, and can also block or scrape metal particles in the magnetorheological fluid, so that the metal particles are prevented from moving upwards to the main sealing lip 6, damage is caused to the main sealing lip 6, and the sealing structure is damaged.

The second embodiment is as shown in the accompanying figures 2, 5 and 6 of the specification.

Wherein, first sealing washer 1 includes first skeleton 3, first rubber layer 4 and the first spring 5 of holding tightly, the quantity of the first spring 5 of holding tightly is two. The first framework 3 comprises an inner ring portion 16, an outer ring portion 17 and a supporting portion 18 which are integrally formed, the inner ring portion 16 is arranged above the outer ring portion 17 in parallel, the inner ring portion 16, the outer ring portion 17 and the supporting portion 18 form an approximate Z shape, the first rubber layer 4 covers the surface of the first framework 3, and one end, close to the piston rod of the magnetorheological damper, of the first rubber layer 4 extends towards two axial directions to form a first contact pin 19 and a second contact pin 20. The inner side surfaces of the first contact pin 19 and the second contact pin 20 are provided with a main sealing lip 6, and the two first holding springs 5 are connected to the outer side surfaces of the first contact pin 19 and the second contact pin 20 respectively. Under the action of the first holding spring 5, the main seal lips 6 on the first contact pin 19 and the second contact pin 20 can be tightly attached to a piston rod of the magnetorheological damper.

The second sealing ring 2 comprises a second framework 7, a second rubber layer 8 and a second holding spring 9. The cross section of the second framework 7 is square, and the second rubber layer 8 is connected to the inner side face of the second framework 7. And an auxiliary sealing lip 10 is arranged on the inner side surface of the second rubber layer 8, and the auxiliary sealing lip 10 can improve the pressure bearing capacity of the whole oil seal structure. The second holding spring 9 is connected to the outer side surface of the auxiliary sealing lip 10. Under the action of the second holding spring 9, the auxiliary sealing lip 10 can tightly abut against the surface of the piston rod of the magnetorheological damper. Meanwhile, a lip 11 is vulcanized and fixed to the auxiliary seal lip 10. The lip 11 is made of PTFE and has good wear-resisting property. The lip 11 can cut viscous magnetorheological fluid, and can also block or scrape metal particles in the magnetorheological fluid, so that the metal particles are prevented from moving upwards to the main sealing lip 6, damage is caused to the main sealing lip 6, and the sealing structure is damaged.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides a combined oil blanket structure of magnetic current becomes shock absorber which characterized in that includes:

the first sealing ring (1), the first sealing ring (1) comprises a first framework (3), a first rubber layer (4) and at least one first holding spring (5); the first rubber layer (4) is attached to the outer surface of the first framework (3), and the first holding spring (5) is annular and is connected with the first rubber layer (4); at least one main sealing lip (6) is arranged on the joint surface of the first rubber layer (4) and the surface to be sealed;

the second sealing ring (2), the second sealing ring (2) comprises a second framework (7), a second rubber layer (8) and a second holding spring (9); the second rubber layer (8) is attached to the outer surface of the second framework (7), the second holding spring (9) is annular and is connected with the second rubber layer (8), an auxiliary sealing lip (10) is arranged on the attachment surface of the second rubber layer (8) and a surface to be sealed, and a lip sheet (11) is bonded on the surface of the auxiliary sealing lip (10);

the first sealing ring (1) and the second sealing ring (2) are arranged in an axially adjacent mode.

2. The magnetorheological damper combined oil seal structure according to claim 1, wherein: the first framework (3) is in an inverted L shape.

3. The combined oil seal structure of magnetorheological shock absorbers according to claim 2, wherein: the first rubber layer (4) is arranged to cover the first framework (3), the first rubber layer (4) comprises an outer ring layer (12), an inner ring layer (13) and a connecting bridge layer (14) which are integrally formed, the inner ring layer (13) is arranged on the inner side of the outer ring layer (12), and the connecting bridge layer (14) is arranged at one end of the outer ring layer (12) and one end of the inner ring layer (13); the main seal lip (6) is arranged on the inner side of the inner ring layer (13), and the first holding spring (5) is connected to the inner ring layer (13).

4. The combined oil seal structure of magnetorheological shock absorbers according to claim 3, wherein: the second framework (7) is in an upright L shape.

5. The combined oil seal structure of magnetorheological shock absorbers according to claim 4, wherein: the second rubber layer (8) is arranged to cover the second framework (7), the second rubber layer (8) is provided with a turn-up edge (15), and the turn-up edge (15) is arranged below the second framework (7); the auxiliary sealing lip (10) is arranged on the inner side face of the flanging (15), and the second holding spring (9) and the lip piece (11) are connected to the flanging (15).

6. The combined oil seal structure of magnetorheological shock absorbers according to claim 1, wherein: first skeleton (3) are including integrated into one piece's interior ring portion (16), outer ring portion (17) and supporting part (18), interior ring portion (16) set up in the inboard of outer ring portion (17) and set up in the top of outer ring portion (17), supporting part (18) extend to respectively and are connected with interior ring portion (16) and supporting part (18).

7. The magnetorheological damper combined oil seal structure according to claim 6, wherein: the first rubber layer (4) is provided with a first contact pin (19) and a second contact pin (20) along the axial direction respectively, the first contact pin (19) and the second contact pin (20) are respectively arranged on two sides of the inner ring part (16), and the first contact pin (19) and the second contact pin (20) are connected with a first enclasping spring (5) respectively.

8. The combined oil seal structure of magnetorheological shock absorbers according to claim 7, wherein: the second framework (7) is flat.

9. The combined oil seal structure of magnetorheological shock absorbers according to claim 8, wherein: the second rubber layer (8) is connected to the inner side of the second framework (7).

10. The combined oil seal structure of magnetorheological shock absorbers according to claim 1, wherein: the lip (11) is PTFE.