CN214803608U

CN214803608U - Dynamic sealing composite guide sleeve for seat air pressure rod

Info

Publication number: CN214803608U
Application number: CN202023027975.3U
Authority: CN
Inventors: 陈晨
Original assignee: Wuxi Weida Gas Spring Co ltd
Current assignee: Wuxi Weida Gas Spring Co ltd
Priority date: 2020-12-16
Filing date: 2020-12-16
Publication date: 2021-11-23
Anticipated expiration: 2030-12-16

Abstract

The utility model discloses a compound guide pin bushing of seat atmospheric pressure stick movive seal, including last interior axle guide pin bushing, accept the overcoat on, axle guide pin bushing, accept the overcoat down, its characterized in that: the lower extreme of accepting the overcoat on is provided with middle sleeve, the lower extreme of going up middle sleeve is provided with the butt joint dish, accept the overcoat, go up middle sleeve and go up the butt joint dish and be integrated into one piece structure, the upper end of accepting the overcoat down is provided with down middle sleeve, the upper end of middle sleeve is provided with down the bearing dish down, accept the overcoat down, down middle sleeve and down the bearing dish and be integrated into one piece structure. The utility model discloses a be provided with the tight ring of side in the skin of axle guide pin bushing in last axle guide pin bushing and lower axle guide pin bushing, go up the butt joint dish and pass through the screw thread butt joint with lower bearing dish, the bearing dish can carry out the bearing to the department in the middle of the sleeve pipe down, and the tight ring of side can assist the atress bearing to axle guide pin bushing in last and axle guide pin bushing down, and dispersible bearing pressure strengthens sleeve structure's stability.

Description

Dynamic sealing composite guide sleeve for seat air pressure rod

Technical Field

The utility model relates to a compound guide pin bushing technical field specifically is compound guide pin bushing of seat atmospheric pressure stick dynamic seal.

Background

At present, the seat air pressure bar product is characterized in that: the high pressure of the gas medium ration (which refers to the limited gas stored in the body) is different along with the different requirements of the lifting force, the gas pressure of the nitrogen filling pressure is often more than 4MPa, so the seat gas pressure rod has higher requirements on the safety and the air tightness of the composite guide sleeve.

The prior seat pneumatic rod dynamic sealing composite guide sleeve has the following defects: most of the conventional dynamic sealing composite guide sleeves of seat pneumatic rods are only provided with one main body sleeve for bearing, the structural stability is poor, and the stressed part is easy to deform after long-time use to influence the air tightness of the composite guide sleeve; in addition, the existing composite guide sleeve only performs one-way sealing, the sealing structure is few, and the integral air tightness of the composite guide sleeve is influenced after the sealing part is abraded.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a compound guide pin bushing of seat pneumatic rod dynamic seal to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the seat air pressure bar dynamic sealing composite guide sleeve comprises an upper inner shaft guide sleeve, an upper bearing outer sleeve, a lower inner shaft guide sleeve and a lower bearing outer sleeve, wherein an upper middle sleeve is arranged at the lower end of the upper bearing outer sleeve, an upper butt joint disc is arranged at the lower end of the upper middle sleeve, the bearing outer sleeve, the upper middle sleeve and the upper butt joint disc are of an integrally formed structure, a lower middle sleeve is arranged at the upper end of the lower bearing outer sleeve, a lower bearing disc is arranged at the upper end of the lower middle sleeve, the lower bearing outer sleeve, the lower middle sleeve and the lower bearing disc are of an integrally formed structure, the upper bearing outer sleeve and the lower bearing outer sleeve are conical, a plurality of clamping ring cavities are arranged inside the upper bearing outer sleeve and the lower bearing outer sleeve, side tight rings are arranged on the outer sides of the upper inner shaft guide sleeve and the lower inner shaft guide sleeve, and the upper inner shaft guide sleeve and the lower shaft guide sleeve are integrally formed with the side tight rings, the upper inner shaft guide sleeve is clamped in a clamping ring cavity of the upper bearing outer sleeve through a side tight ring, the lower inner shaft guide sleeve is clamped in a clamping ring cavity of the lower bearing outer sleeve through a side tight ring, a thread groove is formed in the inner side of the lower bearing plate, threads are arranged on the outer side wall of the upper butt joint plate, the upper butt joint plate is fixedly connected with the lower bearing plate through threads, the inner fixing sleeves of the upper middle sleeve and the lower middle sleeve are provided with the same middle sealing sleeve, an upper sealing rubber ring is sleeved on the inner side of the upper end of the upper middle sleeve, and a lower sealing rubber ring is sleeved on the inner side of the lower end of the lower middle sleeve.

Preferably, the side gripping rings are disposed at uniform intervals.

Preferably, the position of the clamping ring cavity corresponds to the position of the side tight ring.

Preferably, the length of the intermediate sealing sleeve is equal to the total length of the upper intermediate sleeve and the lower intermediate sleeve.

Preferably, the outer side wall of the lower bearing plate is provided with a wear-resistant coating.

Preferably, the lower middle sleeve and the upper middle sleeve are respectively provided with a clamping groove inside, the upper sealing rubber ring is clamped and sleeved in the upper middle sleeve through the clamping grooves, and the lower sealing rubber ring is clamped and sleeved in the lower middle sleeve through the clamping grooves.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a tight ring of side is provided with in the skin of upper inner shaft guide pin bushing and lower inner shaft guide pin bushing, and be provided with the snap-fit ring cavity in upper bearing overcoat and lower bearing overcoat, and be provided with upper butt-joint dish and lower bearing dish, upper butt-joint dish and lower bearing dish pass through the screw thread butt joint, and lower bearing dish can carry out the bearing to the sleeve pipe middle part, and the tight ring of side can carry out supplementary atress bearing to upper inner shaft guide pin bushing and lower inner shaft guide pin bushing, and dispersible bearing pressure strengthens the stability of sleeve pipe structure;

2. the utility model discloses still be provided with upper seal rubber circle, middle seal sleeve and lower seal rubber circle simultaneously, upper seal rubber circle can seal up interior axle guide pin bushing department in last, and lower seal rubber circle can seal up interior axle guide pin bushing department down, can further strengthen the leakproofness through the middle seal sleeve that sets up, can strengthen the holistic sealing stability of sleeve pipe, has simple structure, convenient to use, excellent in use effect's advantage.

Drawings

Fig. 1 is a schematic view of the internal cross-sectional structure of the dynamic sealing composite guide sleeve of the seat air pressure bar of the present invention;

fig. 2 is a schematic view of the outer side structure of the dynamic sealing composite guide sleeve of the seat air pressure bar of the present invention;

fig. 3 is an enlarged view of a portion a of fig. 1.

In the figure: 1. an upper inner shaft guide sleeve; 2. an upper bearing outer sleeve; 3. a lower intermediate sleeve; 4. a lower inner shaft guide sleeve; 5. an upper intermediate sleeve; 6. a lower receiving jacket; 7. a lower sealing rubber ring; 8. a lower bearing plate; 9. an upper docking tray; 10. a middle sealing sleeve; 11. a side gripping ring; 12. an upper sealing rubber ring; 13. the ring cavity is clamped.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a seat air pressure bar dynamic sealing composite guide sleeve comprises an upper inner shaft guide sleeve 1, an upper bearing outer sleeve 2, a lower inner shaft guide sleeve 4 and a lower bearing outer sleeve 6, wherein the lower end of the upper bearing outer sleeve 2 is provided with an upper middle sleeve 5, the lower end of the upper middle sleeve 5 is provided with an upper butt joint disc 9, the bearing outer sleeve, the upper middle sleeve 5 and the upper butt joint disc 9 are of an integrally formed structure, the upper end of the lower bearing outer sleeve 6 is provided with a lower middle sleeve 3, the upper end of the lower middle sleeve 3 is provided with a lower bearing disc 8, the lower bearing outer sleeve 6, the lower middle sleeve 3 and the lower bearing disc 8 are of an integrally formed structure, the upper bearing outer sleeve 2 and the lower bearing outer sleeve 6 are conical, a plurality of clamping ring cavities 13 are arranged inside the upper bearing outer sleeve 2 and the lower bearing outer sleeve 6, and lateral tight rings 11 are arranged outside the upper inner shaft guide sleeve 1 and the lower inner shaft guide sleeve 4, the upper inner shaft guide sleeve 1 and the lower inner shaft guide sleeve 4 are integrally formed with a side tight ring 11, the upper inner shaft guide sleeve 1 is clamped in a clamping ring cavity 13 of the upper bearing outer sleeve 2 through the side tight ring 11, the lower inner shaft guide sleeve 4 is clamped in a clamping ring cavity 13 of the lower bearing outer sleeve 6 through the side tight ring 11, a thread groove is formed in the inner side of the lower bearing plate 8, threads are arranged on the outer side wall of the upper bearing plate 9, the upper bearing plate 9 and the lower bearing plate 8 are fixedly connected through the threads, the same middle sealing sleeve 10 is fixedly sleeved in the upper middle sleeve 5 and the lower middle sleeve 3, an upper sealing rubber ring 12 is sleeved on the inner side of the upper end of the upper middle sleeve 5, and a lower sealing rubber ring 7 is sleeved on the inner side of the lower end of the lower middle sleeve 3.

The side tight rings 11 are arranged at even intervals, so that the side tight rings 11 can be uniformly stressed in a dispersing way, the stability in stress is enhanced, the clamping ring cavity 13 is arranged at a position corresponding to the side tight rings 11, the clamping ring cavity 13 and the side tight rings 11 can be ensured to be in butt joint and clamped, the length of the middle sealing sleeve 10 is equal to the total length of the upper middle sleeve 5 and the lower middle sleeve 3, the middle sealing sleeve 10 can be ensured to fully play a sealing function, the outer side wall of the lower bearing plate 8 is provided with a wear-resistant coating, and the wear-resistant coating can play a wear-resistant role,

the middle sleeve 3 in the lower extreme and the inside of last middle sleeve 5 all seted up the block groove, go up sealing rubber circle 12 and establish in last middle sleeve 5 through block groove block cover, lower sealing rubber circle 7 is established in middle sleeve 3 in the lower extreme through block groove block cover, can ensure the stable fixed of last sealing rubber circle 12 and lower sealing rubber circle 7.

The working principle is as follows: the utility model is provided with a side tight ring 11 on the outer layer of an upper inner shaft guide sleeve 1 and a lower inner shaft guide sleeve 4, a clamping ring cavity 13 is arranged in the upper receiving outer sleeve 2 and the lower receiving outer sleeve 6, an upper butt joint disc 9 and a lower bearing disc 8 are arranged, the upper butt joint disc 9 and the lower bearing disc 8 are butted through screw threads, the lower bearing disc 8 can bear the middle part of the sleeve, the side tight ring 11 can bear the auxiliary stress bearing of the upper inner shaft guide sleeve 1 and the lower inner shaft guide sleeve 4, the bearing pressure can be dispersed, the stability of the sleeve structure is enhanced, and simultaneously, an upper sealing rubber ring 12, a middle sealing sleeve 10 and a lower sealing rubber ring 7 are also arranged, the upper sealing rubber ring 12 can seal the upper inner shaft guide sleeve 1, the lower sealing rubber ring 7 can seal the lower inner shaft guide sleeve 4, the sealing performance can be further enhanced through the middle sealing sleeve 10, the whole sealing stability of the sleeve can be enhanced, has the advantages of simple structure, convenient use and good use effect.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Seat pneumatic rod movive seal compound guide pin bushing including last interior axle guide pin bushing (1), accept overcoat (2), interior axle guide pin bushing (4) down, accept overcoat (6) down, its characterized in that: an upper middle sleeve (5) is arranged at the lower end of the upper bearing outer sleeve (2), an upper butt joint disc (9) is arranged at the lower end of the upper middle sleeve (5), the bearing outer sleeve, the upper middle sleeve (5) and the upper butt joint disc (9) are of an integrally formed structure, a lower middle sleeve (3) is arranged at the upper end of the lower bearing outer sleeve (6), a lower bearing disc (8) is arranged at the upper end of the lower middle sleeve (3), the lower bearing outer sleeve (6), the lower middle sleeve (3) and the lower bearing disc (8) are of an integrally formed structure, the upper bearing outer sleeve (2) and the lower bearing outer sleeve (6) are conical, a plurality of clamping ring cavities (13) are arranged inside the upper bearing outer sleeve (2) and the lower bearing outer sleeve (6), and lateral tight rings (11) are arranged on the outer sides of the upper inner shaft guide sleeve (1) and the lower inner shaft guide sleeve (4), the upper inner shaft guide sleeve (1) and the lower inner shaft guide sleeve (4) are integrally formed with the side tight ring (11), the upper inner shaft guide sleeve (1) is clamped in a clamping ring cavity (13) of the upper bearing outer sleeve (2) through a side tight ring (11), the lower inner shaft guide sleeve (4) is clamped in a clamping ring cavity (13) of the lower bearing outer sleeve (6) through a side tight ring (11), the inner side of the lower bearing plate (8) is provided with a thread groove, the outer side wall of the upper butt joint plate (9) is provided with threads, the upper butt joint plate (9) is fixedly connected with the lower bearing plate (8) through threads, the inner parts of the upper middle sleeve (5) and the lower middle sleeve (3) are fixedly sleeved with the same middle sealing sleeve (10), an upper sealing rubber ring (12) is sleeved on the inner side of the upper end of the upper middle sleeve (5), the lower end inner side of the lower middle sleeve (3) is sleeved with a lower sealing rubber ring (7).

2. The composite guide sleeve for the dynamic seal of the seat pneumatic rod according to claim 1, is characterized in that: the side tight rings (11) are arranged at even intervals.

3. The composite guide sleeve for the dynamic seal of the seat pneumatic rod according to claim 1, is characterized in that: the position of the clamping ring cavity (13) corresponds to the position of the side tight ring (11).

4. The composite guide sleeve for the dynamic seal of the seat pneumatic rod according to claim 1, is characterized in that: the length of the middle sealing sleeve (10) is equal to the total length of the upper middle sleeve (5) and the lower middle sleeve (3).

5. The composite guide sleeve for the dynamic seal of the seat pneumatic rod according to claim 1, is characterized in that: and the outer side wall of the lower bearing plate (8) is provided with a wear-resistant coating.

6. The composite guide sleeve for the dynamic seal of the seat pneumatic rod according to claim 1, is characterized in that: clamping grooves are formed in the lower middle sleeve (3) and the upper middle sleeve (5), the upper sealing rubber ring (12) is sleeved in the upper middle sleeve (5) in a clamping mode through the clamping grooves, and the lower sealing rubber ring (7) is sleeved in the lower middle sleeve (3) in a clamping mode through the clamping grooves.