CN219350042U

CN219350042U - Explosion-proof cavity button

Info

Publication number: CN219350042U
Application number: CN202320664729.3U
Authority: CN
Inventors: 黄建海; 陈晓芳; 陈瑞力; 李少东; 张展鹏
Original assignee: Zhejiang Tormin Electrical Co ltd
Current assignee: Zhejiang Tormin Electrical Co ltd
Priority date: 2023-03-30
Filing date: 2023-03-30
Publication date: 2023-07-14
Anticipated expiration: 2033-03-30

Abstract

An explosion-proof chamber button, its characterized in that: the sealing element is in a tower-shaped structure, a first annular sealing part is formed at the lower end of the sealing element, and a second annular sealing part is formed at the upper end of the sealing element; the sealing piece is sleeved outside the button rod, the first annular sealing part of the sealing piece is embedded in an annular groove formed on the button seat and keeps fixed sealing with the button seat, and the second annular sealing part of the sealing piece keeps sealing contact with the button rod. By adopting the scheme, the first annular sealing part and the second annular sealing part are respectively fixed with the button seat and the button rod, the deformation of the sealing piece is adapted to the relative sliding between the button rod and the button seat during the action, the action is free from obstruction and abrasion, and the service life is long; and during the pressing operation, because the sealing element is tower type structure, when second annular sealing part moves down the deformation along with the button pole, can produce an inwards compressive force to further guarantee sealed effect.

Description

Explosion-proof cavity button

Technical Field

The utility model relates to the technical field of button devices, in particular to an explosion-proof cavity button.

Background

The explosion-proof cavity button is arranged on the explosion-proof cavity, and can be used for pressing a switch and the like in the explosion-proof cavity, so that the explosion-proof cavity button plays a role in explosion suppression and is commonly used in explosive environments such as coal mines.

The explosion-proof button device disclosed in Chinese patent (CN 203377121U) comprises a button main body, wherein the button main body comprises a button rod, a reset mechanism and a button seat, the button seat is fixedly arranged on the explosion-proof cavity and keeps sealing with the explosion-proof cavity, the button rod is movably arranged on the button seat, and one end of the button rod corresponds to a switch extending into the explosion-proof cavity, so that the switch in the explosion-proof cavity can be operated.

In order to ensure a reliable sealing and explosion-proof effect, a reliable seal is usually required between the button rod and the button seat, and most of conventional methods are as disclosed in patent CN203377121U, a sealing ring is sleeved outside the button rod, and the sealing ring is tightly contacted with the button seat, so that sealing is realized.

But adopt above-mentioned scheme, when the button pole acts, can drive the sealing washer synchronous motion, can produce relative slip between sealing washer and the button seat, nevertheless the close fit between sealing washer and the button seat can cause mutual friction, can not only hinder the button pole action, and the spring force is not enough to block in particular when reset, and the mutual friction leads to the fact the sealing washer wearing and tearing easily moreover, leads to sealed inefficacy, and life is low.

Disclosure of Invention

In order to overcome the defects of the background technology, the utility model provides an explosion-proof cavity button.

The utility model adopts the technical scheme that: the explosion-proof cavity button comprises a button seat, a button rod and a reset elastic piece, wherein the button rod penetrates through the button seat from top to bottom and can slide up and down along the button seat, the lower end of the button rod is provided with a button head corresponding to a switch, the upper end of the button rod is provided with an operation head for pressing operation, and the reset elastic piece is connected with the button rod and can provide an upward elastic reset force for the button rod; the sealing device also comprises a sealing piece in a tower-shaped structure, wherein a first annular sealing part is formed at the lower end of the sealing piece, and a second annular sealing part is formed at the upper end of the sealing piece; the sealing piece is sleeved outside the button rod, the first annular sealing part of the sealing piece is embedded in an annular groove formed on the button seat and keeps fixed sealing with the button seat, and the second annular sealing part of the sealing piece keeps sealing contact with the button rod.

The elastic reset piece is a spring, the spring is sleeved outside the sealing piece, the lower end of the spring is abutted against the button seat, and the upper end of the spring is abutted against the operating head of the button rod, so that an upward elastic reset force can be provided for the button rod.

The lower end of the spring is pressed against the first annular sealing part.

And a plurality of annular bulges are formed on the inner wall and the outer wall of the first annular sealing part, and the annular bulges are in sealing fit with the side wall of the annular groove.

The second annular sealing part is abutted with the operation head.

The button rod is clamped with a clamping ring, and the clamping ring is in limit fit with the lower end face of the button seat.

The beneficial effects of the utility model are as follows: the first annular sealing part and the second annular sealing part are respectively fixed with the button seat and the button rod, the deformation of the sealing piece is adapted to the relative sliding between the button rod and the button seat during the action, the action is free from obstruction and abrasion, and the service life is long; and during the pressing operation, because the sealing element is tower type structure, when second annular sealing part moves down the deformation along with the button pole, can produce an inwards compressive force to further guarantee sealed effect.

Drawings

Fig. 1 is a schematic structural diagram of an explosion-proof cavity button according to an embodiment of the present utility model.

Fig. 2 is a schematic cross-sectional view of an explosion-proof cavity button according to an embodiment of the present utility model.

Fig. 3 is an enlarged schematic view at a in fig. 2.

Detailed Description

Embodiments of the utility model are further described below with reference to the accompanying drawings:

as shown in the figure, the explosion-proof cavity button comprises a button seat 1, a button rod 2, a reset elastic piece 3 and a sealing piece 4.

The upper end of the button seat 1 is provided with a containing cavity, the center of the containing cavity is provided with a center hole which penetrates up and down, and the bottom of the containing cavity is provided with a circle of annular grooves 11.

The button rod 2 penetrates through the central hole of the button seat 1 from top to bottom and can slide up and down along the central hole of the button seat 1, the lower end of the button rod 2 is provided with a button head 21 for operating a switch, the upper end of the button rod 2 is provided with an operation head 22 for manual pressing operation, and the operation head 22 is embedded in the accommodating cavity of the button seat 1.

The button head 21 is arranged at the lower end of the button rod 2 in a screw fixing mode, and the assembly is convenient. The operation head 22 is made of flexible materials and is fixed at the upper end of the button rod 2 in a clamping manner, so that the assembly is convenient, and the pressing operation hand feeling is good. In addition, the button rod 2 is provided with a clamping ring 23 in a clamping manner, and the clamping ring 23 is in limit fit with the lower end face of the button seat 1, so that the problem of looseness caused by contact between the button head and the button seat is avoided, and the structure is more stable and reliable.

The reset elastic piece 3 is a spring, the spring is sleeved outside the button rod 2, the lower end of the spring is abutted against the button seat 1, and the upper end of the spring is abutted against the operating head 22 of the button rod 2, so that an upward elastic reset force can be provided for the button rod 2.

The sealing element 4 is in a tower-shaped structure with a narrow upper part and a wide lower part, the sealing element 4 is sleeved outside the button rod 2 and is positioned at the inner ring of the spring, a first annular sealing part 41 extending outwards is formed at the lower end of the sealing element 4, and a second annular sealing part 42 extending inwards is formed at the upper end of the sealing element.

The first annular sealing part 41 is embedded in an annular groove 11 formed on the button seat 1, and keeps fixed sealing with the button seat 1. Wherein, all be formed with multichannel annular bulge 411 on the inner wall and the outer wall of first annular seal portion 41, through annular bulge 411 can further guarantee with the sealed cooperation of annular groove 11 lateral wall, simultaneously the spring lower extreme supports to press on first annular seal portion 41 to can guarantee that first annular seal portion 41 can inlay in annular groove 11 steadily, can not deviate from annular groove because of the deformation action of sealing member itself.

The second annular seal portion 42 is held in sealing contact with the push button stem 2, and the second annular seal portion 42 abuts against the operation head 22.

When the explosion-proof cavity button is used, the button seat 1 is fixedly clamped on the switch 5 in the explosion-proof cavity (not shown in the figure) through the connecting seat 6, and the explosion-proof cavity is kept sealed. When the operation head 22 is pressed, the button rod 2 can be pushed to act, so that the button head at the bottom of the button rod 2 is contacted with the switch 5 to realize switch control, and when the operation head 22 is loosened, the button rod 2 can be automatically reset under the action of the reset elastic piece.

By adopting the scheme, the first annular sealing part 41 and the second annular sealing part 42 are respectively kept fixed with the button seat 1 and the button rod 2, the deformation of the sealing piece is adapted to the relative sliding between the button rod and the button seat during the action, the action is free from obstruction and abrasion, and the service life is long; and when the pressing operation is performed, the second annular sealing part 42 generates an inward pressing force when deformed along with the downward action of the button rod 2 due to the tower-shaped structure of the sealing member, thereby further ensuring the sealing effect.

In the description of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. Furthermore, in the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

The skilled person will know: while the utility model has been described in terms of the foregoing embodiments, the inventive concepts are not limited to the utility model, and any modifications that use the inventive concepts are intended to be within the scope of the appended claims.

Claims

1. The utility model provides an explosion-proof chamber button, includes button seat (1), button pole (2), reset elastic component (3), button pole (2) run through button seat (1) from top to bottom to can slide along button seat (1) and set up from top to bottom, button pole (2) lower extreme is equipped with button head (21) corresponding with switch (5), and the upper end is equipped with and is used for operating head (22) of pressing operation, reset elastic component (3) connect button pole (2), can provide an ascending elasticity restoring force for button pole (2);

the method is characterized in that: the sealing device further comprises a sealing element (4) with a tower-shaped structure, wherein a first annular sealing part (41) is formed at the lower end of the sealing element (4), and a second annular sealing part (42) is formed at the upper end of the sealing element;

the sealing piece (4) is sleeved outside the button rod (2), a first annular sealing part (41) of the sealing piece is embedded in an annular groove (11) formed on the button seat (1) and keeps fixed sealing with the button seat (1), and a second annular sealing part (42) of the sealing piece keeps sealing contact with the button rod (2).

2. The explosion proof cavity button of claim 1, wherein: the reset elastic piece (3) is a spring, the spring is sleeved outside the sealing piece (4), the lower end of the spring is abutted against the button seat (1), and the upper end of the spring is abutted against the operating head (22) of the button rod (2), so that an upward elastic reset force can be provided for the button rod (2).

3. The explosion proof cavity button of claim 2, wherein: the lower end of the spring is pressed against the first annular sealing part (41).

4. The explosion proof cavity button of claim 1, wherein: a plurality of annular protrusions (411) are formed on the inner wall and the outer wall of the first annular sealing portion (41), and the annular protrusions (411) are in sealing fit with the side wall of the annular groove (11).

5. The explosion proof cavity button of claim 1, wherein: the second annular sealing part (42) is abutted against the operation head (22).

6. The explosion proof cavity button of claim 1, wherein: the button rod (2) is clamped with a clamping ring (23), and the clamping ring (23) is in limit fit with the lower end face of the button seat (1).