CN219479617U

CN219479617U - Elastic buffer air pressure rod

Info

Publication number: CN219479617U
Application number: CN202320317291.1U
Authority: CN
Inventors: 陶声荣
Original assignee: Anhui Laite Gas Spring Co ltd
Current assignee: Anhui Laite Gas Spring Co ltd
Priority date: 2023-02-22
Filing date: 2023-02-22
Publication date: 2023-08-08
Anticipated expiration: 2033-02-22

Abstract

The utility model discloses an elastic buffer air pressure rod, and belongs to the technical field of air pressure rods. The air pressure bar comprises: an outer sleeve; the support piece and the mounting seat are arranged in the outer sleeve, and one end of the mounting seat extends into the support piece; a spring is arranged between the support piece and the spring base; an inner sleeve is nested with the outer sleeve, one end of the inner sleeve is arranged in the mounting seat, and a guide sleeve is arranged between the outer sleeve and the inner sleeve; the guide sleeve is provided with at least one positioning groove along the circumferential direction, and the guide sleeve body is provided with a guide vane. 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

Elastic buffer air pressure rod

Technical Field

The utility model belongs to the technical field of gas spring production equipment, and particularly relates to an elastic buffer gas pressure rod.

Background

The pneumatic rod is an important component for realizing the function of lifting and adjusting the height of the lifting seat. The common pneumatic bar product is installed on the chair, and liftable seat is comparatively hard on the seat after fixing to certain position, and the comfort is relatively poor, and especially after the seat falls to the bottom, elasticity is nearly zero, and the comfort falls to minimum, produces the noise when receiving pressure in addition, and simultaneously, current liftable seat bearing capacity is weaker, is unsuitable for the great people of weight.

In order to ensure the smoothness of lifting of products in the current market, the surface of the bar core must be coated with lubricating grease, but in the continuous lifting process, the lubricating grease can be extruded to the upper end of the bar core, and after a certain amount of lubricating grease is reached, the lubricating grease can flow to the surface of the products and even to the ground, so that the environment is affected and the ground pollution is caused to users.

In order to solve the above-mentioned problem, chinese patent application number CN201420546233.7 discloses an elastic buffer type air pressure rod, which comprises an outer big tube, wherein a piston rod is installed at one end of the outer big tube, an outer tube is embedded at the other end of the outer big tube, an outer tube plastic sleeve is arranged at the embedded part, an inner tube is embedded in the outer tube, a ventilation layer is arranged between the outer tube and the inner tube, a piston mechanism is arranged at one end of the inner tube to connect the piston rod, a valve body sealing driving device is arranged at the other end of the inner tube, a spring which is adapted to the inner diameter of the outer big tube is arranged inside the outer big tube, and the spring is arranged between the top end of the outer big tube and the plastic sleeve and can extend and retract along the pipeline; the Chinese patent application No. CN202020360801.X discloses an elastic buffer type low-noise air pressure rod, which comprises an outer wall, an air cylinder, an adjusting rod, a bearing support and a piston connecting rod, wherein two groups of shaft rods which are symmetrically distributed are arranged on the inner side of the head of the outer wall, and the head of each shaft rod is rotationally connected with a telescopic rod; chinese patent application number CN201620197003.3 discloses an elastic buffer gas pressure rod comprising nested outer and inner sleeves, and a support and a spring base; one end of the inner sleeve is arranged in the spring base; the outer sleeve is internally provided with a supporting piece, and a spring is arranged between the supporting piece and the spring base; a guide sleeve is also arranged between the outer sleeve and the inner sleeve. Through the use, the problems that lubricating grease is not easy to leak but the lubrication of the inner sleeve is not smooth are found in the above patent, so that improvement and perfection are still needed.

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 an elastic buffer air pressure rod, so that the lubrication effect of the inner sleeve is improved, and the smooth use is ensured.

2. Technical proposal

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

the elastic buffer air pressure rod of the utility model comprises:

an outer sleeve;

the support piece and the mounting seat are arranged in the outer sleeve, and one end of the mounting seat extends into the support piece; a spring is arranged between the support piece and the spring base;

an inner sleeve is nested with the outer sleeve, one end of the inner sleeve is arranged in the mounting seat, and a guide sleeve is arranged between the outer sleeve and the inner sleeve;

the guide sleeve is provided with at least one positioning groove along the circumferential direction, and the guide sleeve body is provided with a guide vane.

In one possible implementation manner of the utility model, 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, and the guide ribs are connected through a connecting ring.

In one possible embodiment of the present utility model, an oil tank is provided in parallel with the guide rib.

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 direction of inclination of the guide vane is not uniform.

In one possible embodiment of the present utility model, the directions of two adjacent guide vanes are opposite to each other.

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.

In one possible embodiment of the utility model, a top bushing is arranged between the mounting seat and the guide bushing.

3. Advantageous effects

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

(1) According to the elastic buffer air pressure rod, the guide sleeve is provided with at least one positioning groove along the circumferential direction, the guide sleeve body is provided with the guide sheet, the guide sheet can disperse and guide lubricating grease around the guide sleeve, and particularly the guide sleeve is provided with the guide ribs, so that the lubricating grease can be dispersed and guided 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 elastic buffer air pressure rod 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 view of an elastic buffer air pressure rod according to the present utility model;

FIG. 2 is a schematic diagram of the structure of a guide sleeve of an elastic buffer air pressure rod according to the present utility model;

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a bottom view of FIG. 2;

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

Reference numerals illustrate:

11. an outer sleeve; 12. a support; 13. a mounting base; 14. a spring; 15. an inner sleeve; 16. a guide sleeve; 161. a base; 162. a body; 163. a guide rib; 164. a positioning groove; 165. a deflector; 166. a clamping groove; 167. a connecting ring; 17. a fuel tank; 18. and (5) a top shaft sleeve.

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 5, the elastic buffer gas pressure rod of the present embodiment includes: an outer sleeve 11; a supporting member 12 and a mounting seat 13 which are arranged in the outer sleeve 11, wherein one end of the mounting seat 13 extends into the supporting member 12; a spring 14 is arranged between the support 12 and the base 161 of the spring 14; the inner sleeve 15 is nested with the outer sleeve 11, one end of the inner sleeve 15 is arranged in the mounting seat 13, and a guide sleeve 16 is arranged between the outer sleeve 11 and the inner sleeve 15.

In this embodiment, the guide sleeve 16 includes a base 161 and a body 162 disposed on the base 161, where a plurality of guide ribs 163 are uniformly disposed outside the body 162, and the guide ribs 163 are disposed parallel to the axis of the body 162, as shown in fig. 3, the guide ribs 163 are radially outward with the center of the body 162, and the guide ribs 163 are connected by a connection ring 167, and the connection ring 167 can enhance the strength of the guide ribs 163; the guide sleeve 16 is provided with at least one positioning groove 164 along the circumferential direction, and a deflector 165 is formed on the body 162 of the guide sleeve 16. Through the positioning groove 164, the guide sleeve 16 is effectively ensured to be fastened in the outer sleeve 11, and the guide sleeve 16 is prevented from rotating in the outer sleeve 11.

In this embodiment, taking a pneumatic rod of the company as an example, the outer sleeve 11 is made of 50 steel pipes, the supporting member 12 and the mounting seat 13 are made of alloy steel, one end of the outer sleeve 11 is closed, the spring 14 is added into the mounting seat 13 and the supporting member 12, and the elastic buffering is increased and the comfort is greatly improved by utilizing the compressible and resilient performance of the spring 14. By fixing the guide sleeve 16 at the front end of the inner sleeve 15, the inner sleeve 11 with a smooth inner diameter is lifted, and lubricating grease is coated in the gap between the outer sleeve 11 and the guide sleeve 16, so that the lifting smoothness is ensured, and the lubricating grease cannot flow out.

When the air pressure rod is used, lubricating grease and the like are added into the outer sleeve 11 along the oiling grooves 17 which are formed in parallel with the guide ribs 163, but during the use process, the inner sleeve 15 can rotate along the circumferential direction and move up and down, particularly, when the inner sleeve moves up and down, the phenomenon that part of the lubricating grease is concentrated is caused, and through tracking analysis on the lubricating grease, the lubricating grease can be concentrated to the position of the base 161 of the guide sleeve 16 along with the inner sleeve 15 when the inner sleeve 15 moves up; when moving downwards, lubricating grease can lubricate one side of the inner sleeve 15 at a certain position, so that the inner sleeve 15 is not lubricated smoothly.

Through a great number of experiments and field analysis, the inventor of the present utility model sets the guide vane 165 on the guide sleeve 16, and the guide vane 165 can disperse and guide the lubricating grease around the guide sleeve 16, especially sets the guide rib 163 on the guide sleeve 16, so that the lubricating grease can be dispersed and guided uniformly, and the lubricating grease is not concentrated at a certain place.

It should be noted that, the guide sleeve 16 may be integrally cast, and is made of polyoxymethylene, and the guide sleeve 16 made of 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 deflector 165 is disposed obliquely on the guide rib 163 and is located near the base 161. The inclined directions of the guide vanes 165 are not consistent, as shown in fig. 5, preferably, the directions of two adjacent guide vanes 165 are opposite, that is, the heads of the two guide vanes 165 are opposite and face a certain guide rib 163, 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 163 is provided with an inclined plane, so that the guide sleeve 16 is convenient to install, in addition, a plurality of engaging grooves 166 are formed in the outer side surface of the base 161 along the circumferential direction, and the engaging grooves 166 are arc-shaped grooves and coincide with the circle center and the base 161. Through these block grooves 166, the outer sleeve 11 is matched with these block grooves 166 under the action of external force, so that the positioning is more stable.

In addition, the spring 14 is generally made of spring 14 steel, the hardness of the spring 14 steel is high, the mounting seat 13 is made of alloy steel, such as 45# steel, and the guide sleeve 16 is made of polyoxymethylene, the hardness is far smaller than that of the spring 14 and the mounting seat 13, so that the top shaft sleeve 18 is arranged between the mounting seat 13 and the guide sleeve 16, the top shaft sleeve 18 can buffer the impact force of the spring 14 and the mounting seat 13, damage to the guide sleeve 16 is effectively reduced, and preferably, the top shaft sleeve 18 is made of rubber or the like.

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

1. An elastic buffer gas pressure rod comprising:

an outer sleeve (11);

a supporting piece (12) and a mounting seat (13) which are arranged in the outer sleeve (11), wherein one end of the mounting seat (13) extends into the supporting piece (12); a spring (14) is arranged between the support piece (12) and a base (161) of the spring (14);

an inner sleeve (15) is nested in the outer sleeve (11), one end of the inner sleeve (15) is arranged in the mounting seat (13), and a guide sleeve (16) is arranged between the outer sleeve (11) and the inner sleeve (15);

the guide sleeve (16) is characterized in that at least one positioning groove (164) is formed in the circumferential direction, and a guide vane (165) is formed on a body (162) of the guide sleeve (16).

2. The elastic buffer pneumatic rod according to claim 1, wherein the guide sleeve (16) comprises a base (161) and a body (162) arranged on the base (161), a plurality of guide ribs (163) are uniformly arranged outside the body (162), and the guide ribs (163) are connected through a connecting ring (167).

3. The elastic buffer pneumatic rod according to claim 2, characterized in that an oil tank (17) is provided in parallel with the guide rib (163).

4. A flexible buffer pneumatic rod according to any of claims 2-3, characterized in that the deflector (165) is arranged obliquely to the guide rib (163).

5. The spring buffer gas pressure bar according to claim 4, wherein the direction of inclination of the deflector (165) is non-uniform.

6. The elastic buffer gas rod according to claim 5, characterized in that the directions of two adjacent guide vanes (165) are opposite.

7. The elastic buffer pneumatic rod according to claim 6, characterized in that the head of the guide rib (163) is provided with a bevel.

8. The elastic buffer pneumatic rod according to claim 7, wherein the outer side surface of the base (161) is provided with a plurality of clamping grooves (166) along the circumferential direction.

9. The elastic buffer pneumatic rod according to claim 8, wherein the clamping groove (166) is an arc-shaped groove and coincides with the circle center with the base (161).

10. Elastic buffer gas rod according to claim 1, characterized in that a top bushing (18) is arranged between the mounting seat (13) and the guide sleeve (16).