CN219413363U - Guide sleeve and gas spring with same - Google Patents

Abstract

The utility model discloses a guide sleeve and a gas spring with the guide sleeve. The guide sleeve comprises a base and a body arranged on the base, wherein a plurality of guide ribs are uniformly arranged outside the body, the guide ribs are connected through connecting rings, an oil filling groove is formed in parallel with the guide ribs, at least one positioning groove is formed in the guide sleeve along the circumferential direction, and guide vanes are formed on the body of the guide sleeve; the inclination directions of the guide vanes are inconsistent, and the directions of two adjacent guide vanes are opposite. The guide vane can disperse and guide lubricating grease around the guide sleeve, and especially, the guide ribs are arranged on the guide sleeve, so that the lubricating grease can be uniformly dispersed and guided away, the lubricating grease is prevented from being concentrated at a certain position, the lubricating effect of the inner sleeve is improved, and the use smoothness is ensured.

Description

Guide sleeve and gas spring with same

Technical Field

The utility model belongs to the technical field of gas spring production equipment, and particularly relates to a guide sleeve and a gas spring with the guide sleeve.

Background

The air spring mainly plays a supporting role and is widely applied to industries such as automobiles, body-building appliances, textile machinery, printing equipment, office equipment, engineering machinery and the like. The existing gas spring mainly comprises an outer sleeve, a core rod and a guide sleeve, so that the guide sleeve is a relatively core component of the gas spring, and is particularly important.

Through retrieval, chinese patent application number CN201520155465.4 discloses a novel guide sleeve, which comprises a sleeve body, guide ribs are uniformly arranged in the sleeve body, an oil storage groove is formed between the guide ribs, the inner side surface of each guide rib is arc-shaped, and the sleeve body is made of polyformaldehyde. The novel guide sleeve reduces friction surface, reduces friction force, stores lubricating grease in the grooves, increases lubricating effect, can keep lubricating degree for a long time, enables the air pressure rod to lift smoothly and softly, improves comfort level, gives comfortable seat feeling to a user, and can be widely applied to office swivel chairs. However, the guide sleeve disclosed in the patent is extremely easy to cause lubricating grease concentration, so that the inner sleeve is not smooth in lubrication, and the inner sleeve is worn to be damaged.

Disclosure of Invention

1. Problems to be solved

Aiming at the problem that the lubrication of the inner sleeve is not smooth, the utility model aims to provide the guide sleeve and the gas spring with the guide sleeve, the guide sleeve can play a good role in guiding lubricating grease, and the lubrication of the inner sleeve is ensured to be smooth.

2. Technical proposal

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the guide sleeve comprises a base and a body arranged on the base, wherein a plurality of guide ribs are uniformly arranged outside the body, the guide ribs are connected through connecting rings, an oil filling groove is formed in parallel with the guide ribs, at least one positioning groove is formed in the guide sleeve along the circumferential direction, and guide vanes are formed on the body of the guide sleeve; the inclination directions of the guide vanes are inconsistent, and the directions of two adjacent guide vanes are opposite.

In one possible embodiment of the utility model, the guide vane is arranged obliquely on the guide rib.

In one possible embodiment of the utility model, the head of the guide rib is provided with a bevel.

In one possible implementation manner of the present utility model, a plurality of engaging grooves are formed on the outer side surface of the base along the circumferential direction.

In one possible implementation manner of the present utility model, the clamping groove is an arc groove and coincides with the circle center and the base.

Another object of the present utility model is to provide a gas spring comprising: an outer sleeve; the guide sleeve is arranged between the outer sleeve and the inner sleeve.

3. Advantageous effects

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

(1) According to the guide sleeve, the guide sheet is formed on the guide sleeve body, the guide sheet can disperse and guide lubricating grease around the guide sleeve, and particularly the guide ribs are arranged on the guide sleeve, so that the lubricating grease can be dispersed and guided away more uniformly, the lubricating grease is not concentrated at a certain position, the lubricating effect of the inner sleeve is improved, and the smooth use is ensured;

(2) The guide sleeve disclosed by the utility model is simple in structure and easy to manufacture.

Drawings

The technical solution of the present utility model will be described in further detail below with reference to the accompanying drawings and examples, but it should be understood that these drawings are designed for the purpose of illustration only and thus are not limiting the scope of the present utility model. Moreover, unless specifically indicated otherwise, the drawings are intended to conceptually illustrate the structural configurations described herein and are not necessarily drawn to scale.

FIG. 1 is a schematic perspective view of a guide sleeve according to the present utility model;

FIG. 2 is a front view of the guide sleeve of the present utility model;

FIG. 3 is a top view of the guide sleeve of the present utility model;

FIG. 4 is a bottom view of the guide sleeve of the present utility model;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 2;

fig. 6 is a schematic structural view of the gas spring of the present utility model.

Reference numerals illustrate:

10. an outer sleeve;

20. an inner sleeve;

30. a guide sleeve; 31. a base; 32. a body; 33. a guide rib; 34. a connecting ring; 35. a positioning groove; 36. a deflector; 37. a clamping groove; 38. and the oil filling groove.

Detailed Description

The following detailed description and example embodiments of the utility model may be better understood when read in conjunction with the accompanying drawings, in which elements and features of the utility model are identified by reference numerals.

As shown in fig. 1 to 6, the guide sleeve 30 of the present embodiment includes a base 31 and a body 32 disposed on the base 31, wherein a plurality of guide ribs 33 are uniformly disposed outside the body 32, the guide ribs 33 are connected by a connecting ring 34, as shown in fig. 3, the guide ribs 33 are radially outward with the center of the body 32, the guide ribs 33 are connected by the connecting ring 34, and the connecting ring 34 can enhance the strength of the guide ribs 33; an oil filling groove 38 is formed parallel to the guide rib 33, the guide sleeve 30 is provided with at least one positioning groove 35 along the circumferential direction, and a guide vane 36 is formed on the body 32 of the guide sleeve 30; the oblique directions of the guide vanes 36 are not consistent, and the directions of two adjacent guide vanes 36 are opposite.

Through the positioning groove 35, the guide sleeve 30 is effectively ensured to be fastened in the outer sleeve 10, and the guide sleeve 30 is prevented from rotating in the outer sleeve 10.

The guide vane 36 is arranged on the guide sleeve 30, the guide vane 36 can disperse and guide lubricating grease around the guide sleeve 30, and particularly, the guide rib 33 is arranged on the guide sleeve 30, so that the lubricating grease can be dispersed and guided uniformly, and the lubricating grease is not concentrated at a certain position; the problem that lubricating grease is concentrated to the position of the base 31 of the guide sleeve 30 along with the inner sleeve 20 when the inner sleeve 20 moves upwards is solved; when moving downwards, the lubricating grease can lubricate one side of the inner sleeve 20 at a certain position, so that the inner sleeve 20 is not lubricated smoothly.

The guide sleeve 30 can be obtained by integrally casting, the material of the guide sleeve is polyoxymethylene, and the guide sleeve 30 manufactured by Polyoxymethylene (POM) has the characteristics of high rigidity, good elasticity and good antifriction and wear resistance, and meets the use requirement.

Under the above design requirements, the guide vane 36 is obliquely arranged on the guide rib 33 and is located near the base 31. The oblique directions of the guide vanes 36 are inconsistent, as shown in fig. 5, preferably, the directions of two adjacent guide vanes 36 are opposite, that is, the heads of the two guide vanes 36 are opposite and face a certain guide rib 33, so that the dispersion guide effect of the lubricating grease can be effectively improved by the design.

In this embodiment, the head of the guide rib 33 is provided with an inclined plane, so that the guide sleeve 30 is convenient to install, in addition, a plurality of engaging grooves 37 are formed in the outer side surface of the base 31 along the circumferential direction, and the engaging grooves 37 are arc-shaped grooves and coincide with the circle center and the base 31. Through these block grooves 37, the outer sleeve 10 is matched with these block grooves 37 under the action of external force, so that the positioning is more stable.

As shown in fig. 6, this embodiment also provides a gas spring, including: an outer sleeve 10; an inner sleeve 20 is nested with the inner sleeve 10, and the guide sleeve 30 is arranged between the outer sleeve 10 and the inner sleeve 20.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (6)

1. The utility model provides a uide bushing (30), its includes base (31) and arranges body (32) on base (31), the outside of body (32) evenly is equipped with a plurality of guide bars (33), guide bar (33) are connected through go-between (34), with a oiling groove (38) has been seted up to guide bar (33) parallel, characterized in that, uide bushing (30) set up at least one constant head tank (35) along the circumferencial direction, and be formed with guide vane (36) on body (32) of uide bushing (30); the inclination directions of the guide vanes (36) are not consistent, and the directions of two adjacent guide vanes (36) are opposite.

2. The guide sleeve (30) according to claim 1, wherein the guide vane (36) is obliquely arranged on the guide rib (33).

3. The guide sleeve (30) according to claim 2, wherein the head of the guide rib (33) is provided with a bevel.

4. A guide sleeve (30) according to claim 3, wherein the outer side surface of the base (31) is provided with a plurality of engagement grooves (37) along the circumferential direction.

5. The guide sleeve (30) according to claim 4, wherein the engagement groove (37) is an arc-shaped groove and coincides with the center of a circle with the base (31).

6. A gas spring, comprising:

an outer sleeve (10);

an inner sleeve (20) nested with the outer sleeve (10), a guide sleeve (30) according to any one of claims 1-5 being arranged between the outer sleeve (10) and the inner sleeve (20).