CN213981785U

CN213981785U - Return flow type guider for shock absorber

Info

Publication number: CN213981785U
Application number: CN202022335394.XU
Authority: CN
Inventors: 邬赛尧
Original assignee: Ningbo Junma New Material Technology Co ltd
Current assignee: Ningbo Junma New Material Technology Co ltd
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2021-08-17
Anticipated expiration: 2030-10-20

Abstract

The utility model discloses a backward flow formula director for bumper shock absorber, including body (1), body (1) center is equipped with through-hole (1.1), be equipped with scraper ring (2) between through-hole (1.1) and the piston rod, body (1) terminal surface is equipped with first boss (1.2), be equipped with second boss (1.3) on first boss (1.2), the cooperation is equipped with first steel bushing (3) on first boss (1.2), the cooperation is equipped with piston barrel (4) on second boss (1.3), constitute return oil path (5) between first steel bushing (3) and piston barrel (4), be equipped with oil gallery (1.4) of intercommunication through-hole (1.1) and return oil path (5) on body (1). The utility model provides a can carry out the multistage damping shock absorber piston of the settlement of the damping force value of difference to the damping hole of the inner circle of piston and the damping hole of outer lane.

Description

Return flow type guider for shock absorber

Technical Field

The utility model relates to a vehicle bumper shock absorber technical field, in particular to backward flow formula director for bumper shock absorber.

Background

When the automobile passes through the uneven road surface, although the shock absorption spring in the shock absorption system can filter the shock of the road surface, the spring can still do reciprocating motion, and the shock absorber is used for inhibiting the spring from jumping back and forth. The structure of the shock absorber is that a piston rod with a piston is inserted into a cylinder, and the cylinder is filled with oil. The piston is provided with a throttling hole, so that the oil in the two parts of space separated by the piston can be supplemented with each other. The working principle of the shock absorber is that when the frame and the axle or the vehicle body and the axle are vibrated to move relatively, the piston in the shock absorber moves up and down, oil in the cavity of the shock absorber repeatedly flows into the other cavity from one cavity through different pores, and at the moment, the friction between the hole wall and the oil and the internal friction between oil molecules form damping force on the vibration, so that the vibration energy of the vehicle is converted into oil heat energy, and then the oil heat energy is absorbed by the shock absorber and dissipated into the atmosphere.

The guider is a part which is arranged in the cylinder and used for guiding the piston rod, the center of the guider is provided with a through hole for the piston rod to pass through, oil is attached to the surface of the piston rod, and when the piston rod moves in a reciprocating mode, the oil is easily driven to overflow through the through hole, so that the oil pressure in the cylinder is reduced, and the normal work of the shock absorber is influenced.

Disclosure of Invention

The utility model discloses the technical problem that will solve is: provided is a backflow type guide for a shock absorber, which can backflow oil to prevent a reduction in oil pressure in a piston cylinder.

The utility model provides a technical scheme that above-mentioned problem adopted does: the utility model provides a backward flow formula director for bumper shock absorber, includes the body, the body center is equipped with the through-hole, be equipped with the scraper ring between through-hole and the piston rod, the body terminal surface is equipped with first boss, be equipped with the second boss on the first boss, the cooperation is equipped with first steel bushing on the first boss, the cooperation is equipped with the piston barrel on the second boss, constitute oil return passage between first steel bushing and the piston barrel, be equipped with the oil gallery of intercommunication through-hole and oil return passage on the body.

Compared with the prior art, the technical scheme has the advantages that: the oil is attached to the piston rod, and when the piston rod passes through the through hole, the piston rod is scraped off by an oil scraper ring in the through hole, enters the oil return channel through the oil return hole, and finally flows back to the interior of the piston cylinder body, so that the reduction of the oil is avoided.

Preferably, the oil return hole is obliquely arranged towards the oil return passage.

Preferably, the outer wall of the oil scraper ring is provided with an oil return groove, and the oil return groove is communicated with the oil return hole.

Preferably, the oil scraper ring includes linkage segment, elastic segment and the frizing section that sets gradually, the linkage segment and this body coupling, the inner wall of frizing section cooperates with the outer wall of piston rod in order to scrape away fluid, the elastic segment sets up provides elastic restoring force between linkage segment and frizing section.

Drawings

Fig. 1 is a schematic view of the overall structure section of the present invention.

1. A body; 1.1, a through hole; 1.2, a first boss; 1.3, a second boss; 1.4, an oil return hole; 2. an oil scraper ring; 2.1, an oil return groove; 2.2, connecting sections; 2.3, an elastic section; 2.4, an oil scraping section; 3. a first steel jacket; 4. a piston cylinder; 5. an oil return passage.

Detailed Description

As shown in fig. 1, a backward flow formula director for bumper shock absorber, includes body 1, body 1 center is equipped with through-hole 1.1, be equipped with scraper ring 2 between through-hole 1.1 and the piston rod, body 1 terminal surface is equipped with first boss 1.2, be equipped with second boss 1.3 on the first boss 1.2, the cooperation is equipped with first steel bushing 3 on the first boss 1.2, the cooperation is equipped with piston barrel 4 on the second boss 1.3, constitute oil return channel 5 between first steel bushing 3 and the piston barrel 4, be equipped with the oil return hole 1.4 of intercommunication through-hole 1.1 and oil return channel 5 on the body 1.

The oil return hole 1.4 is obliquely arranged towards the oil return passage 5, and the obliquely arranged oil return hole 1.4 can facilitate oil to flow from the oil scraper ring 2 into the oil return passage 5.

The outer wall of the oil scraper ring 2 is provided with an oil return groove 2.1, the oil return groove 2.1 is communicated with an oil return hole 1.4, and the oil return groove 2.1 is used for accommodating oil scraped off by the oil scraper ring 2 from the piston rod and finally enters the oil return hole 1.4.

Wherein, oil scraper ring 2 includes linkage segment 2.2, elastic component 2.3 and the oil scraping section 2.4 that sets gradually, linkage segment 2.2 is connected with body 1, the inner wall of oil scraping section 2.4 cooperates with the outer wall of piston rod in order to scrape away fluid, elastic component 2.3 sets up and provides the elastic restoring force between linkage segment 2.2 and oil scraping section 2.4, and oil scraper ring 2 offsets with body 1 through linkage segment 2.2, makes oil scraping section 2.4 can follow piston rod axial elastic movement through elastic component 2.3, and oil scraping section 2.4 is used for scraping out fluid.

The foregoing is illustrative of the preferred embodiments of the present invention only, and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to be changed. All changes which come within the scope of the independent claims of the invention are to be embraced within their scope.

Claims

1. The utility model provides a backward flow formula director for bumper shock absorber, includes body (1), body (1) center is equipped with through-hole (1.1), its characterized in that: be equipped with scraper ring (2) between through-hole (1.1) and the piston rod, body (1) terminal surface is equipped with first boss (1.2), be equipped with second boss (1.3) on first boss (1.2), the cooperation is equipped with first steel bushing (3) on first boss (1.2), the cooperation is equipped with piston barrel (4) on second boss (1.3), constitute return oil passageway (5) between first steel bushing (3) and piston barrel (4), be equipped with oil gallery (1.4) of intercommunication through-hole (1.1) and return oil passageway (5) on body (1).

2. The return-flow guide for a shock absorber according to claim 1, wherein: the oil return hole (1.4) is obliquely arranged towards the oil return channel (5).

3. The return-flow guide for a shock absorber according to claim 1, wherein: the outer wall of the oil scraper ring (2) is provided with an oil return groove (2.1), and the oil return groove (2.1) is communicated with an oil return hole (1.4).

4. The return-flow guide for a shock absorber according to claim 1, wherein: scraper ring (2) are including linkage segment (2.2), elastic component (2.3) and the frizing section (2.4) that set gradually, linkage segment (2.2) are connected with body (1), the inner wall of frizing section (2.4) and the outer wall cooperation of piston rod are in order to scrape away fluid, elastic component (2.3) set up and provide the elastic restoring force between linkage segment (2.2) and frizing section (2.4).