CN217761850U

CN217761850U - Nitrogen spring integral type dust cover

Info

Publication number: CN217761850U
Application number: CN202221953679.2U
Authority: CN
Inventors: 成扬; 张晓东; 龚仕华
Original assignee: Chongqing Telipuer Machinery Equipment Co ltd
Current assignee: Chongqing Telipuer Machinery Equipment Co ltd
Priority date: 2022-07-27
Filing date: 2022-07-27
Publication date: 2022-11-08
Anticipated expiration: 2032-07-27

Abstract

The utility model discloses a nitrogen spring integrated dust cover, wherein a bottle cap-shaped dust cover is connected to the front end of a cylinder body of a nitrogen spring and wraps a part of a piston rod; the upper surface of the dust cover is provided with a shaft passing hole, the upper edge of the shaft passing hole is provided with a lip edge deflected to the axis, the upper surface of the dust cover is provided with a V-shaped groove which is coaxially distributed with the shaft passing hole and has a circumferential track of 360 degrees, and the V-shaped groove is matched with the lip edge to form a Y-shaped structure; the lip is integral with the dust cap. The utility model can form secondary protection for the nitrogen spring, scrape the foreign matter on the piston rod, and avoid the foreign matter being brought into the interior by the piston rod and damaging the sealing performance; the lip edge and the dust cover are of an integral structure, so that the integral structure has better strength, various severe conditions under extreme working conditions can be better resisted, in addition, the production and the manufacture of the dust cover can be completed through integral injection molding, additional die sinking is not needed, and the cost is lower.

Description

Nitrogen spring integral type dust cover

Technical Field

The utility model belongs to the technical field of the dust cover, concretely relates to nitrogen gas spring integral type dust cover.

Background

The nitrogen spring special for mould (called die nitrogen spring or nitrogen cylinder for short) is a new type elastic component using high-pressure nitrogen as working medium, and its volume is small, elasticity is large, stroke is long, working is stable, manufacturing is accurate, service life is long (million times), elastic curve is smooth, and it has no need of pre-tightening, etc. it has the work which is difficult to implement by conventional elastic components of metal spring, rubber and air cushion, etc. and can simplify mould design and manufacture, and can conveniently implement mould installation and regulation, prolong the service life of mould and ensure stability of product quality.

As shown in fig. 2, nitrogen spring generally is equipped with the cylinder body D2 that is used for holding structures such as jump ring, piston cylinder, and a piston rod D1 that is located the axis, and in addition just there is a dust ring between piston rod D1 and the cylinder body D2 originally, and cylinder body D2's outer wall still is equipped with the recess of a ring-shaped distribution.

Under the general environment, a dust ring is enough to satisfy the protection demand, but under extreme operating mode, the environment is abominable, and iron fillings, cinder etc. are more, and the piston rod is polluted easily, and the foreign matter gets into the inside destruction of nitrogen spring along with the piston rod easily and seals, reduces nitrogen spring's life.

Consequently, provide a dust cover that plays secondary protection effect to nitrogen spring uses under extreme operating mode, improves nitrogen spring's life, and this kind of dust cover possesses the lip limit that is used for scraping the dirt of integral type, and overall structure intensity is higher, and part structure is more simple, once moulds plastics and can form whole product, and the cost is lower.

SUMMERY OF THE UTILITY MODEL

To the problem that the above-mentioned background art provided, the utility model aims at: aims to provide a nitrogen spring integrated dust cover.

In order to realize the technical purpose, the utility model discloses a technical scheme as follows:

a bottle cap-shaped dust cover is connected to the front end of a cylinder body of a nitrogen spring and wraps a part of a piston rod;

the upper surface of the dust cover is provided with a shaft passing hole, the upper edge of the shaft passing hole is provided with a lip edge deviated to the axis, the upper surface of the dust cover is provided with a V-shaped groove which is coaxially distributed with the shaft passing hole and has a circumferential track of 360 degrees, and the V-shaped groove is matched with the lip edge to form a Y-shaped structure;

the lip is integral with the dust cap.

Further inject, the inner wall lower part of dust cover is equipped with solid fixed ring, and such structural design accomplishes being connected of dust cover and nitrogen spring cylinder body through solid fixed ring, because nitrogen spring cylinder body front portion can be equipped with a recess, gu the fixed cooperation of fixed ring and recess, accomplished the fixed spacing of dust cover.

The utility model has the advantages that:

1. the secondary protection can be formed on the nitrogen spring, foreign matters on the piston rod are scraped, and the foreign matters are prevented from being brought into the piston rod to damage the sealing property;

2. the lip edge and the dust cover are of an integral structure, so that the integral structure has better strength, various severe conditions under extreme working conditions can be more resisted, in addition, the production and the manufacture of the dust cover can be completed through integral injection molding, additional die sinking is not needed, and the cost is lower.

Drawings

The present invention can be further illustrated by the non-limiting examples given in the accompanying drawings;

FIG. 1 is a schematic structural view of an embodiment of a nitrogen-spring integrated dust cover of the present invention;

FIG. 2 is a schematic structural view of an embodiment of the nitrogen spring integrated dust cover of the present invention when being engaged with a nitrogen spring;

the main component symbols are as follows:

a through shaft hole 11, a V-shaped groove 12, a lip 13 and a fixing ring 14.

Detailed Description

In order to make the present invention better understood by those skilled in the art, the technical solutions of the present invention are further described below with reference to the accompanying drawings and examples.

As shown in the figures 1-2, the integral dust cover for the nitrogen spring of the utility model is characterized in that a bottle cap-shaped dust cover is connected to the front end of the cylinder body of the nitrogen spring and wraps a part of the piston rod;

the upper surface of the dust cover is provided with a shaft passing hole 11, a lip edge 13 which is deviated to an axial line is arranged at the upper edge of the shaft passing hole 11, the upper surface of the dust cover is provided with a V-shaped groove 12 which is coaxially distributed with the shaft passing hole 11 and has a circumferential track of 360 degrees, and the V-shaped groove 12 is matched with the lip edge 13 to form a Y-shaped structure;

the lip 13 is integral with the dust cap.

Preferably, the inner wall lower part of dust cover is equipped with solid fixed ring 14, and such structural design accomplishes being connected of dust cover and nitrogen gas spring cylinder body through solid fixed ring 14, because nitrogen gas spring cylinder body front portion can be equipped with a recess, gu fixed ring 14 and the cooperation of recess, accomplished the fixed spacing of dust cover. In fact, other connection structures between the fixed ring 14 and the nitrogen spring cylinder may be specifically considered according to the specific situation.

In the embodiment, the dust cover is mounted on a groove of a nitrogen spring cylinder body D2 through a fixing ring 14, the dust cover wraps the front end of the nitrogen spring to form secondary protection, the lip edge 13 is matched with the piston rod D1, when the piston rod D1 moves, the lip edge 13 scrapes off foreign matters on the wall of the lip edge 13 to prevent the foreign matters from being brought into the interior and damaging sealing, the lip edge 13 deflects towards the piston rod D1, the piston rod D1 is extruded to a certain extent to form effective sealing, the sealing effect is determined by extrusion force, and the extrusion force of the lip edge 13 is determined by the thickness of the lip edge 13 and the size of the V-shaped groove 12;

in addition, the V-shaped groove 12 provides a certain space for the backward deformation of the lip edge 13, so that the dust cover can adapt to piston rods D1 with different diameters in a small range, and the lip edge 13 is ensured to have certain extrusion force;

because lip 13 and dust cover structure as an organic whole, therefore its overall structure intensity is better, more can resist various abominable conditions under the extreme operating mode, in addition through integrative injection moulding, can accomplish the manufacturing of dust cover, need not additionally die sinking, the cost is lower.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. The utility model provides a nitrogen gas spring integral type dust cover which characterized in that: the bottle cap-shaped dust cover is connected to the front end of the cylinder body of the nitrogen spring and wraps a part of the piston rod;

the upper surface of the dust cover is provided with a shaft passing hole (11), a lip edge (13) deviated to an axis is arranged on the upper edge of the shaft passing hole (11), the upper surface of the dust cover is provided with a V-shaped groove (12) which is coaxially distributed with the shaft passing hole (11) and has a circumferential track of 360 degrees, and the V-shaped groove (12) is matched with the lip edge (13) to form a Y-shaped structure;

the lip (13) is integral with the dust cap.

2. The nitrogen-spring integrated dust cover as claimed in claim 1, wherein: and a fixing ring (14) is arranged at the lower part of the inner wall of the dust cover.