CN214999041U

CN214999041U - Air spring sealing gasket and air spring with sealing gasket

Info

Publication number: CN214999041U
Application number: CN202120843328.5U
Authority: CN
Inventors: 陶声荣
Original assignee: Anhui Laite Gas Spring Co ltd
Current assignee: Anhui Laite Gas Spring Co ltd
Priority date: 2021-04-21
Filing date: 2021-04-21
Publication date: 2021-12-03
Anticipated expiration: 2031-04-21

Abstract

The utility model discloses an air spring seal gasket and have air spring of seal gasket belongs to the relevant technical field of air spring seal part. The sealing gasket comprises a base body, an inner ring body and an outer ring body, wherein the inner ring body, the base body and the outer ring body sequentially form a sealing gasket whole body, an inner annular bulge is arranged on the inner ring body, and an outer annular bulge is arranged on the outer ring body. Can realize the good sealing of air spring, long service life.

Description

Air spring sealing gasket and air spring with sealing gasket

Technical Field

The utility model belongs to the technical field of the air spring seal part is relevant, more specifically says, relates to an air spring seal gasket and have seal gasket's air spring.

Background

The gas spring is also called as a gas pressure rod, can realize mechanical parts with functions of supporting, buffering, braking, height and angle adjustment and the like, and is widely applied to industries such as medical treatment, automobile manufacturing, furniture production and the like; the prior mechanical part manufacturing industry. Because of its unique performance, widely use in each field in daily life, bring huge convenience for people's daily life activity, the basic requirement of air spring is must not attenuate in the use pressure, therefore one of its key accessory is exactly the seal gasket that is used for sealed, ordinary seal gasket often produces the seepage because sealed not in place after actual assembly, finally influences product quality and life, in order to improve the sealing performance of air spring, improve the life of air spring, need improve the structure of seal gasket.

The Chinese patent application numbers are: 201710464577.1, publication date is: 2017-11-21, which comprises a motor, a cylinder body, a piston rod, a threaded rod, a nut, an anti-rotation sleeve, a left guide spacer, a sealing element, a split retainer, a bearing seat, an anti-rotation retainer and a bearing. The right end of the threaded rod extends into the hollow section of the piston rod, and the right end of the nut is fixedly connected with the piston rod. The right side of the bearing seat is provided with a fixed retainer ring inclined plane, and the fixed retainer ring inclined plane strikes a plurality of points to fix the anti-rotation retainer ring in the bearing seat. The anti-rotation sleeve is provided with an anti-rotation protrusion and a groove, and the cylinder body and the nut are respectively provided with an anti-rotation groove and a protrusion. Threaded rod left end polished rod diameter is less than right-hand member threaded rod diameter, is equipped with bearing connection portion from the right side to the left side, and transition portion, motor connection portion are connected to retaining ring, sealing member and direction spacer installation department. The right end of the cylinder body is fixed with a guide sleeve, and the left side of the guide sleeve is provided with a sealing rubber piece. The left end of the cylinder body is provided with a rubber sealing gasket and a left plug. The right end of the hollow piston rod and the left plug are fixedly connected with a connector respectively, and the left side of the sealing rubber piece is fixedly provided with a right guide spacer bush. It carries out the sealed of air spring through the rubber spare, but its intensity of the sealing rubber spare of ordinary structure and sealing performance often can not satisfy the needs.

The Chinese patent application numbers are: 201220556544.2, the announcement date is: 2013-06-05, which comprises a framework, wherein a rubber body is arranged on the inner wall of the framework, a PTFE (Polytetrafluoroethylene) sealing body is arranged on the outer side of the rubber body, the framework is inserted into the PTFE sealing body, and a sealing lip is arranged on the inner side surface of the PTFE sealing body. The gas spring sealing ring effectively improves the supporting strength of the sealing ring, achieves a good sealing effect, avoids leakage caused by the fact that the piston rod is not in place due to friction with the sealing ring in the movement process, and is poor in bidirectional sealing capability in the using process.

The Chinese patent application numbers are: 201922263168.2, the announcement date is: the plate type gas spring seal of 2020-09-18 comprises a seal body and a framework arranged in the seal body; the sealing body comprises an outer sealing lip, an inner sealing lip and a middle bridging part connected between the lower end part of the outer sealing lip and the lower end part of the inner sealing lip; the outer wall of the outer sealing lip is provided with at least one outer lip which protrudes outwards; the inner wall of the inner sealing lip is provided with at least one inner lip which protrudes inwards and is suitable for embracing the shaft; the framework part is arranged in the middle bridging part, and two ends of the framework respectively extend into the lower end part of the outer sealing lip part and the lower end part of the inner sealing lip part.

Disclosure of Invention

1. Problems to be solved

Aiming at the problem of poor sealing effect of the existing air spring sealing element, the utility model provides an air spring sealing gasket which can realize good sealing of an air spring and has long service life;

another object of the present invention is to provide an air spring with a sealing gasket, which has a good sealing effect.

2. Technical scheme

In order to solve the above problem, the utility model discloses the technical scheme who adopts as follows:

the utility model discloses an air spring seal gasket, seal gasket include base member, interior ring body and outer ring body, interior ring body, base member and outer ring body constitute seal gasket wholly according to the order, it is protruding to be provided with interior annular on the interior ring body, be provided with outer annular arch on the outer ring body. In the sealing process of the gas spring, the sealing of the inner side and the outer side needs to be considered, the inner side of the sealing gasket is connected with the piston rod, the outer side of the sealing gasket is connected with the wall of the gas spring, the distance between the piston rod of the gas spring and the wall of the gas spring is large, the sealing of the inner side and the outer side is difficult to realize simultaneously, the base body is utilized to provide strength support, the distances between the inner side and the outer side of the sealing gasket and the wall of the gas spring can be reduced, the deformation of the sealing gasket in the filling process can be reduced, the base body is utilized as the support, the inner ring body and the outer ring body are utilized to realize the sealing of the inner side and the outer side of the gas spring, and a good sealing effect can be achieved.

As a further explanation of the present invention, the inner ring body side is connected to the outer ring body side and covers the base body side. The inner ring body and the outer ring body are generally made of rubber, the elasticity of the rubber is utilized to seal the gas spring, one sides of the inner ring body and one side of the outer ring body are connected or integrated, then when the sealing gasket works, the inner side of the inner ring body and the outer side of the outer ring body are both subjected to tension, the inner ring body and the outer ring body are connected together, the tension of the inner ring body and the tension of the outer ring body can be balanced, and the inner ring body and the outer ring body can be used more stably.

As a further explanation of the present invention, an inner protrusion is provided on a side of the inner ring body where the outer ring body meets, and an outer protrusion is provided on a side of the outer ring body where the inner ring body meets. The setting of protruding portion increases the radial length of interior ring body and outer ring body on the one hand, increases the stability of interior ring body and outer ring body, and on the other hand increases the length that interior ring body and outer ring body and piston rod and air spring pipe wall contact, the sealed effect of assurance seal gasket in the use that can be better.

As a further explanation of the present invention, an inner annular protrusion is provided on the inner protruding portion, and an outer annular protrusion is provided on the outer protruding portion. Interior annular bulge and outer annular bulge's setting are at the sealed in-process that carries out seal gasket, only think the contact by interior annular bulge and piston rod, and outer annular bulge contacts with the air spring pipe wall, reduces the frictional force of filling the process, the packing of the seal gasket of being convenient for.

As a further explanation of the present invention, two inner annular protrusions are respectively disposed on the inner annular body at a position close to the base body and on the inner protruding portion; the outer annular bulge is two and is respectively arranged on the part of the outer annular body close to the base body and the outer protruding part. The arrangement of the inner annular bulges and the outer annular bulges can enhance the sealing performance of the sealing gasket and reduce the friction force in the filling process.

As a further explanation of the present invention, the annular protrusion includes a first inclined surface and a second inclined surface. The ring body bulge is composed of two inclined planes, so that the inclined planes can play a certain role in guiding and smoothing in the filling process, and the filling of the sealing gasket is facilitated.

As a further explanation of the present invention, the inclination angle of the first inclined plane is 20 to 60 °, and the inclination angle of the second inclined plane is 20 to 60 °. The first inclined plane and the second inclined plane can reduce friction force in the filling process at a certain inclined angle, and meanwhile, good sealing performance can be shown.

As a further explanation of the present invention, a groove is provided on the base, positioning protrusions are provided on the inner ring and the outer ring, and the groove is engaged with the positioning protrusions. The arrangement of the groove and the positioning protrusion can stabilize the relative positions of the base body, the inner ring body and the outer ring body, and ensure the stable use of the inner ring body and the outer ring body.

The utility model discloses an air spring, including an air spring seal gasket of above-mentioned arbitrary item. By utilizing the sealing gasket, the air spring sealing gasket with good sealing performance can be obtained, and the service life of the sealing gasket is long.

3. Advantageous effects

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

(1) the utility model discloses an air spring sealing gasket, in the sealing process of air spring, need consider inboard and outside sealed, the sealing gasket inboard is connected with the piston rod, the outside is connected with the air spring pipe wall, because the distance between the piston rod of air spring and the air spring pipe wall is great, it is comparatively difficult to realize inboard and outside sealed simultaneously, utilize the base member to provide intensity support, make sealing gasket inboard and outside can reduce the distance with piston rod and air spring pipe wall, can reduce and load in-process, the deformation of sealing gasket, utilize the base member as the support, inner ring body and outer ring body, realize the sealed to the air spring inboard and outside, can have good sealed effect;

(2) the utility model discloses an air spring seal gasket, inner ring body and outer ring body, generally can adopt rubber to make, utilize the elasticity of rubber to carry out the sealing of air spring, meet one side of inner ring body and outer ring body or set up into the integral type, then when seal gasket during operation, the inboard of inner ring body and the outside of outer ring body all can receive tension, connect both to together, the tension of inner ring body and outer ring body can be balanced, inner ring body and outer ring body can both more stable use;

(3) the utility model discloses an air spring sealing gasket, the setting of protruding portion increases the radial length of inner ring body and outer ring body on the one hand, increases the stability of inner ring body and outer ring body, and on the other hand, increases the length that inner ring body and outer ring body and piston rod and air spring pipe wall contact, can be better the sealed effect of assurance sealing gasket in the use;

(4) the utility model discloses an air spring sealing gasket, the setting of interior annular bulge and outer annular bulge, in the sealing process of sealing gasket, only think to contact by interior annular bulge and piston stick, outer annular bulge and air spring pipe wall contact reduce the frictional force of filling process, be convenient for the filling of sealing gasket;

(5) the utility model discloses an air spring sealing gasket, the setting of a plurality of interior annular bulges and outer annular bulge can strengthen the sealing performance of sealing gasket, reduce the frictional force in the filling process;

(6) in the air spring sealing gasket of the utility model, the bulge of the ring body is composed of two inclined planes, so that the inclined planes can play a certain role in guiding and smoothing in the filling process, thereby facilitating the filling of the sealing gasket;

(7) according to the air spring sealing gasket, the first inclined plane and the second inclined plane can reduce the friction force in the filling process under a certain inclination angle, and meanwhile, good sealing performance can be shown;

(8) the arrangement of the groove and the positioning bulge of the air spring sealing gasket of the utility model can stabilize the relative position between the base body and the inner ring body and between the base body and the outer ring body, and ensure the stable use of the inner ring body and the outer ring body;

(9) the utility model discloses an air spring, on obtaining good sealing performance basis, seal gasket's long service life.

Drawings

The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and examples, but it should be understood that these drawings are designed for illustrative purposes only and thus are not intended to limit the scope of the present invention. Furthermore, unless otherwise indicated, the drawings are intended to be illustrative of the structural configurations described herein and are not necessarily drawn to scale.

Fig. 1 is a schematic sectional view of a gas spring sealing gasket according to the present invention;

FIG. 2 is a schematic view of a side of the substrate of FIG. 1;

fig. 3 is a schematic structural diagram of the side far away from the substrate in fig. 1.

In the drawings: 1. a substrate; 11. a groove; 2. an inner ring body; 21. an inner annular protrusion; 22. an inner protrusion; 3. an outer ring body; 31. an outer annular projection; 32. an outer protrusion; 41. a first inclined plane; 42. a second inclined plane; 43. and a positioning projection.

Detailed Description

The following detailed description of exemplary embodiments of the invention refers to the accompanying drawings, which form a part hereof, and in which is shown by way of illustration exemplary embodiments in which the invention may be practiced. Although these exemplary embodiments are described in sufficient detail to enable those skilled in the art to practice the invention, it should be understood that other embodiments may be realized and that various changes to the invention may be made without departing from the spirit and scope of the present invention. The following more detailed description of the embodiments of the present invention is not intended to limit the scope of the invention, as claimed, but is presented for purposes of illustration only and not limitation to provide the best mode contemplated for carrying out the invention and to enable any person skilled in the art to practice the invention. Accordingly, the scope of the invention is to be limited only by the following claims.

The detailed description and exemplary embodiments of the invention may be better understood when read in conjunction with the following drawings, where the elements and features of the invention are identified by reference numerals.

Example 1

As shown in fig. 1-3, a gas spring seal gasket of this embodiment includes a base 1, an inner ring 2, and an outer ring 3. The substrate 1 can be an annular metal sheet, the inner ring body 2, the substrate 1 and the outer ring body 3 sequentially form a whole gasket seal, the inner ring body 2 is provided with an inner annular bulge 21, and the outer ring body 3 is provided with an outer annular bulge 31. In the sealing process of the gas spring, the sealing of the inner side and the outer side needs to be considered, the inner side of the sealing gasket is connected with the piston rod, the outer side of the sealing gasket is connected with the wall of the gas spring, the distance between the piston rod of the gas spring and the wall of the gas spring is large, the sealing of the inner side and the outer side is difficult to realize simultaneously, the base body 1 is utilized to provide strength support, the distance between the inner side and the outer side of the sealing gasket and the wall of the gas spring can be reduced, the deformation of the sealing gasket in the filling process can be reduced, the base body 1 is utilized as support, the inner ring body 2 and the outer ring body 3 are utilized to realize the sealing of the inner side and the outer side of the gas spring, and a good sealing effect can be achieved. The base body 1 is provided with a groove 11, the inner ring body 2 and the outer ring body 3 are provided with a positioning bulge 43, and the groove 11 is clamped and connected with the positioning bulge 43. The arrangement of the groove 11 and the positioning protrusion 43 can stabilize the relative position between the base 1 and the inner ring body 2 and the outer ring body 3, and ensure the stable use of the inner ring body 2 and the outer ring body 3.

One side of the inner ring body 2 is connected with one side of the outer ring body 3 and is coated on one side of the matrix 1. The inner ring body 2 and the outer ring body 3 are generally made of rubber, the sealing of the gas spring is performed by using the elasticity of the rubber, one sides of the inner ring body 2 and the outer ring body 3 are connected or integrated, when the sealing gasket works, the inner side of the inner ring body 2 and the outer side of the outer ring body 3 are both under tension and connected together, the tension of the inner ring body 2 and the tension of the outer ring body 3 can be balanced, and both the inner ring body 2 and the outer ring body 3 can be used more stably.

The inner ring body 2 is provided with an inner protrusion 22 on the side where the outer ring body 3 is connected, and the outer ring body 3 is provided with an outer protrusion 32 on the side where the inner ring body 2 is connected. The setting of protruding portion increases the radial length of interior ring body 2 and outer ring body 3 on the one hand, increases the stability of interior ring body 2 and outer ring body 3, and on the other hand increases the length that interior ring body 2 and outer ring body 3 and piston rod and air spring pipe wall contact, the sealed effect of assurance seal gasket in the use that can be better.

The inner protrusion 22 is provided with an inner annular protrusion 21 and the outer protrusion 32 is provided with an outer annular protrusion 31. The setting of interior annular bulge 21 and outer annular bulge 31 is in the sealed in-process that carries out seal gasket, only thinks the contact by interior annular bulge 21 and piston rod, and outer annular bulge 31 and gas spring pipe wall contact reduce the frictional force of filling the process, the packing of the seal gasket of being convenient for. Two inner annular bulges 21 are respectively arranged at the part of the inner annular body close to the base body 1 and on the inner protruding part 22; two outer annular projections 31 are provided, respectively, on the outer annular body in the vicinity of the base body 1 and on the outer projection 32. The provision of a plurality of inner 21 and outer 31 annular projections enhances the sealing properties of the gasket and reduces friction during filling.

The annular protrusion comprises a first inclined surface 41 and a second inclined surface 42, and the annular protrusion is composed of the two inclined surfaces, so that the inclined surfaces can play a certain guiding and smoothing role in the filling process, and the filling of the sealing gasket is facilitated. The inclination angle of the first inclined surface 41 is 20-60 °, specifically 20 °, 30 °, 40 °, 45 °, 50 °, 60 °, etc., and the inclination angle of the second inclined surface 42 is 20-60 °, specifically 20 °, 30 °, 40 °, 45 °, 50 °, 60 °, etc. The first inclined surface 41 and the second inclined surface 42 can reduce friction force during the filling process at a certain inclination angle, and can show good sealing performance.

Example 2

The utility model discloses an air spring, including embodiment 1's an air spring seal gasket. The basic structure of the gasket is referred to CN203796836U, wherein the gasket in the present application corresponds to the bowl-shaped gasket in the patent, and with the gasket of example 1, a gas spring gasket with good sealing performance can be obtained, and the service life of the gasket is long.

Claims

1. A gas spring sealing gasket characterized by: the sealing gasket comprises a base body (1), an inner ring body (2) and an outer ring body (3), wherein the inner ring body (2), the base body (1) and the outer ring body (3) sequentially form a sealing gasket whole body, an inner annular bulge (21) is arranged on the inner ring body (2), and an outer annular bulge (31) is arranged on the outer ring body (3).

2. A gas spring seal gasket according to claim 1, wherein: one side of the inner ring body (2) is connected with one side of the outer ring body (3) and is coated on one side of the matrix (1).

3. A gas spring seal gasket according to claim 2, wherein: an inner protruding part (22) is arranged on one side, connected with the outer ring body (3), of the inner ring body (2), and an outer protruding part (32) is arranged on one side, connected with the inner ring body (2), of the outer ring body (3).

4. A gas spring seal gasket according to claim 2, wherein: an inner annular protrusion (21) is arranged on the inner protruding portion (22), and an outer annular protrusion (31) is arranged on the outer protruding portion (32).

5. A gas spring seal gasket according to claim 4, wherein: the two inner annular bulges (21) are respectively arranged at the part of the inner annular body close to the base body (1) and on the inner protruding part (22); the two outer annular protrusions (31) are respectively arranged on the part, close to the base body (1), of the outer annular body and the outer protruding part (32).

6. A gas spring seal gasket according to claim 5, wherein: the annular projection includes a first ramp (41) and a second ramp (42).

7. A gas spring seal gasket according to claim 6, wherein: the inclination angle of the first inclined plane (41) is 20-60 degrees, and the inclination angle of the second inclined plane (42) is 20-60 degrees.

8. A gas spring sealing gasket according to any one of claims 1 to 7, wherein: the base body (1) is provided with a groove (11), the inner ring body (2) and the outer ring body (3) are provided with positioning protrusions (43), and the groove (11) is connected with the positioning protrusions (43) in a clamping mode.

9. A gas spring, characterized in that: a gas spring sealing gasket comprising a gas spring sealing gasket according to any one of claims 1 to 8.