CN101546660B - Structure of operating part of explosion prevention button head - Google Patents

Abstract

The invention relates to a structure of an operating part of an explosion prevention button head, which comprises: a cover (10) and a body (20) connected with the cover (10); a cavity formed by the cover (10) and the body (20) and comprising an operating part (30) on the upper part and a baffle plate (91) on the lower part; a first spring (40), a clamp ring (60), a telescopic sealing ring (50), a sliding shaft (70) and a second spring (80) which are arranged below the operating part (30) in turn; and a fixing mechanism (90) which is arranged below the sliding shaft (70). Through the connection and the transition of the telescopic sealing ring (50), the body (20) and the cover (10) as well as the clamp ring (60) and the sliding shaft (70) are connected into a whole body, and gaps between the four components are shielded effectively to achieve good protecting performance.

Description

The operation part structure of explosion-proof button head

Technical field

The present invention relates to a kind of explosion-proof button head, relate in particular to the operation part structure of this explosion-proof button head.

Background technology

The explosion-proof button head is a kind of being used in the explosion-proof industry ex electrical product, is assemblied in a kind of press-button structure of the electric middle operation inner button of guidance panel or other light fixtures.

By Fig. 1, Fig. 2 as seen: (cover 1 by standing part as explosion-proof button is first, body 2) and activity operations part (movable axis 3,spring 4, sealing ring 5) form, standing part plays the effect that button is installed and protected, and operation part is the effect of button activity operation inner member.

Sealing ring is to contact with movable axis with body (or lid) by the tension force of self and the elastic force of spring in this structure, thus the protective action of playing, and the motion parts and the gap between the standing part of button head button head when being operated can not effectively prevent into water.

Summary of the invention

The technical issues that need to address of the present invention have provided a kind of operation part structure of explosion-proof button head, are intended to solve the above problems.

In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:

The present invention includes: a lid, a body that joins with lid; In the cavity that described lid and body are formed, also comprise one at an upper portion thereof functional unit, at the baffle plate of its underpart; Under functional unit, settle one first spring, compacting ring, flexible sealing ring, movable axis, second spring successively; Also comprise a fixed mechanism; Described fixed mechanism is placed under the movable axis, and connection and transition by flexible sealing ring fuse body and lid, compacting ring and movable axis.

Compared with prior art, the invention has the beneficial effects as follows: shielded the gap between them effectively, realized good barrier propterty.

Description of drawings

Fig. 1 is an explosion-proof button header structure schematic diagram in the prior art;

Fig. 2 is the structural representation after Fig. 1 button is pressed;

Fig. 3 is an exploded perspective view of the present invention.

Fig. 4 adopts the present invention and other industrial electrical equipments to be used schematic diagram, among the figure: operating point anddirection 100,pressure button cover 101, sealinggasket 102,locking nut 103, electricalequipment body wall 104.

Embodiment

Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail:

As seen from Figure 3: the present invention includes: 10, one on lid withcover 10 bodies that join 20; In the cavity that describedlid 10 andbody 20 formed, also comprise one at an upper portion thereoffunctional unit 30, at thebaffle plate 91 of its underpart; Settle onefirst spring 40, compactingring 60,flexible sealing ring 50,movable axis 70,second spring 80 for 30 times successively at functional unit; Also comprise afixed mechanism 90; Describedfixed mechanism 90 is placed inmovable axis 70 times, by the connection and the transition offlexible sealing ring 50,body 20 andlid 10, compactingring 60 is fused withmovable axis 70;

Describedfunctional unit 30 is forward type or tapered end type or mushroom head dummy or selection type;

Describedlid 10 adopts buckle structure with being connected ofbody 20.

Among the figure: sealinggasket 102,locking nut 103.

The present invention is between the buckle structure of body and lid, be equipped with flexible sealing ring between compacting ring and the movable axis, the buckle of body and lid is provided with the effect anchor point, behind the correct chucking of the buckle of body and lid, the edge of flexible sealing ring one end is tightened, and forms one with body and lid; Compacting ring and movable axis also are provided with effective anchor point, when the stressed operation of functional unit promotes compacting ring, compacting ring oppositely is designed to an end of the flexible sealing ring of arc transition and tightly embraces compacting ring, stressed tight more, it is good more to seal, because the opposite force of the contained spring another side of pushing down flexible sealing ring one end tightly; Because fixed mechanism is fixed together flexible sealing ring of movable axis and compacting ring tightly, make it form one, like this, connection and transition by flexible sealing ring, effectively body and lid, compacting ring and movable axis are fused, shield simultaneously the gap between them effectively, realized good barrier propterty.

The present invention partly is split up into movable axis and functional unit with button activity, and the new function of generation is, functional unit can have multiple pattern (as forward type, tapered end type, mushroom head dummy, selection type) and not influence the hermetically-sealed construction and the barrier propterty of button inside.

As seen from Figure 4: after whole pressure button cover assembles self, be used as an individual components and other industrial electrical equipments, by locking nut with firm being installed on the electric equipment products that are used with it of pressure button cover, tack by the control button cover outer surface, the spring stress that is connected with tack promotes compacting ring, thereby the drive baffle plate, the inner explosion-proof button fuse of baffle plate crawl control apparatus is realized the button command function.

Claims (3)

1. the operation part structure of an explosion-proof button head comprises: a lid (10), a body (20) that joins with lid (10); In the cavity that described lid (10) and body (20) are formed, also comprise one at an upper portion thereof functional unit (30), at the baffle plate (91) of its underpart; It is characterized in that: under functional unit (30), settle one first spring (40), a compacting ring (60), a flexible sealing ring (50), movable axis (70), second spring (80) successively; Also comprise a fixed mechanism (90); Described fixed mechanism (90) is placed under the movable axis (70), by the connection and the transition of flexible sealing ring (50), body (20) and lid (10), compacting ring (60) is fused with movable axis (70).

2. the operation part structure of explosion-proof button head according to claim 1 is characterized in that: described functional unit (30) is forward type or tapered end type or mushroom head dummy or selection type.

3. the operation part structure of explosion-proof button head according to claim 1 and 2 is characterized in that: described lid (10) adopts buckle structure with being connected of body (20).

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