CN222233524U - High voltage switch - Google Patents

Abstract

The utility model relates to a high-voltage switch, including a shell and a switch assembly, the switch assembly including a shell, a thimble, a top cap, a spring, an adjusting screw and a micro switch, one end of the shell is threadedly connected with an adjusting screw, the top cap is slidably connected to the inner cavity of the shell, one end of the top cap is elastically connected to the adjusting screw through a spring, the micro switch is fixed to one side of the shell, the contact of the micro switch is against the end of the top cap in the inner cavity of the shell, one end of the shell is fixed with a cover shell, the thimble is slidably connected to the inner cavity of the cover shell, one end of the thimble is against the other end of the top cap away from the adjusting screw, and one end of the cover shell is provided with a through hole connected to its inner cavity. The high-voltage switch can realize high-pressure switching action, up to 20MPa, to meet the needs of high-pressure control fields such as agricultural machinery, traffic engineering machinery and heavy construction machinery, compressors, pneumatic tools, etc., the mechanical structure has high reliability, the stainless steel material is compatible with various acid and alkali media, and the fully sealed structure has excellent external protection capabilities.

Description

High-voltage switch

Technical Field

The utility model relates to the technical field of pressure switches, in particular to a high-voltage switch.

Background

In the high-voltage control field of agricultural machinery, traffic engineering machinery, heavy construction machinery, compressors, pneumatic tools and the like, the conventional pressure switch cannot be suitable for the high-voltage working condition by using a stainless steel disc as a pressure sensing element.

Disclosure of utility model

Aiming at the defects in the prior art, the utility model provides the high-voltage switch which has the advantages of simple structure, convenience in assembly, good sealing performance and long service life.

The utility model is realized by the following technical scheme:

The utility model provides a high-voltage switch, is including being hollow shell and setting up the switch module in the shell, the switch module includes casing, thimble, hood, spring, adjusting screw and micro-gap switch, the casing is fixed in the shell, and the casing is one end has open-ended hollow structure, and the casing other end threaded connection has the adjusting screw, adjusting screw one end extends to the casing inner chamber, hood sliding connection is in the casing inner chamber, and hood one end passes through spring and adjusting screw elastic connection, and the hood other end extends outward to the opening of casing, micro-gap switch is fixed in casing one side, and micro-gap switch's contact leans on with the hood tip of casing inner chamber, the one end of shell is fixed with the housing, thimble sliding connection is in the housing inner chamber, and the other end that adjusting screw was kept away from to thimble one end leans on with the hood, and the through-hole of its inner chamber of intercommunication is seted up to housing one end.

In order to facilitate the disassembly and assembly of the switch assembly, the housing and the shell are in threaded connection, one end of the housing, far away from the shell, is provided with a guide part capable of allowing the thimble to slide, one end of the guide part is provided with a through hole communicated with the inner cavity of the guide part, and the diameter of the through hole is smaller than that of the thimble.

In order to limit the top cap, a retainer ring is arranged in the housing, one end of the top cap abuts against the retainer ring, and the thimble penetrates through the retainer ring and abuts against the top cap.

In order to ensure the insulativity, an insulating gasket is arranged between the retainer ring and the end face of the shell.

In order to guide the thimble and ensure the tightness and the insulativity, an O-shaped ring and a nylon pad are arranged between the thimble and the inner cavity of the housing.

In order to avoid exposing the internal components, the gap in the shell is filled with epoxy resin.

The high-voltage switch has the beneficial effects that the high-voltage switch can realize high-voltage switch action, the highest pressure can reach 20MPa, the requirements of high-voltage control fields such as agricultural machinery, traffic engineering machinery, heavy construction machinery, compressors, pneumatic tools and the like are met, the reliability of a mechanical structure is high, the stainless steel material can be compatible with various acid-base media, and the fully-sealed structure has excellent external protection capability.

Drawings

Fig. 1 is a schematic perspective view of a high voltage switch according to the present utility model;

fig. 2 is a cross-sectional view of the high voltage switch of the present utility model.

Detailed Description

The preferred embodiments of the present utility model will be described in detail below with reference to the attached drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present utility model. The directional terms referred to in the present utility model, such as "up", "down", "front", "back", "left", "right", "top", "bottom", etc., refer only to the directions of the attached drawings. Accordingly, directional terminology is used to describe and understand the utility model and is not limiting of the utility model.

The high-voltage switch shown in fig. 1 comprises a hollow shell 1 and a switch assembly arranged in the shell 1, wherein the shell 1 is of a cylindrical structure, two ends of the shell are both provided with openings, one end of the shell is detachably provided with a housing 2, and the shell 1 and the housing 2 are both made of stainless steel materials.

Specifically, referring to fig. 2, the switch assembly includes a housing 3, a thimble 5, a top cap 4, a spring 6, an adjusting screw 7, and a micro switch 8, where the housing 3 is fixed in the housing 1, a clearance fit is adopted between the housing 3 and the housing 1, the housing 3 is a hollow structure with an opening at one end (bottom in the drawing), the adjusting screw 7 is screwed on the other end (top in the drawing) of the housing 3, one end (bottom in the drawing) of the adjusting screw 7 extends to the inner cavity of the housing 3, the top cap 4 is slidably connected to the inner cavity of the housing 3, one end (top in the drawing) of the top cap 4 is elastically connected with the bottom end of the adjusting screw 7 through the spring 6, the top end of the top cap 4 has a positioning slot into which the elastic 6 can be inserted, and the shrinkage force of the spring 6 can be adjusted by rotating the adjusting screw 7, the other end (bottom in the drawing) of the top cap 4 extends to the outside of the opening of the shell 3, the micro switch 8 is fixed on one side of the shell 3, one side of the shell 3 is provided with a notch communicated with the inner cavity of the micro switch 8, a contact point of the micro switch 8 is abutted against the top end part of the top cap 4 in the inner cavity of the shell 3, a lead 9 of the micro switch 8 extends to the outside of the shell 1, the bottom end of the shell 3 is connected with the shell 2 in a threaded manner, a guide part 10 capable of enabling the thimble 5 to slide is arranged at the center position of one end (bottom in the drawing) of the shell 2 far away from the shell 3, the thimble 5 is connected with the inner cavity of the guide part 10 in a sliding manner, the thimble 5 is coaxially arranged with the spring 6, one end (top in the drawing) of the thimble 5 is abutted against the bottom end of the top cap 4, a through hole 11 communicated with the inner cavity of the thimble is formed at the bottom end of the guide part 10, the diameter of the through hole 11 is smaller than the diameter of the thimble 5, a retainer 12 is arranged in the shell 2, the retaining ring 12 adopts aluminium system, top cap 4 bottom and retaining ring 12 are supported against, thimble 5 runs through retaining ring 12 and supports against with top cap 4 bottom, in addition, be provided with insulating washer 13 between retaining ring 12 and the casing 3 terminal surface, insulating washer 13 adopts nylon materials to make, is provided with O type circle 14 and nylon pad 15 between thimble 5 and the direction portion 10 inner chamber to guarantee insulativity and leakproofness, after the switch module assembly is accomplished, the filling epoxy 16 in the shell 1 guarantees its insulativity.

When the thimble 5 is stressed, the thimble 5 pushes the top cap 4 to move upwards along the shell 3, the spring 6 contracts, the top cap 4 triggers the micro switch 8 to send a signal, and when the thimble 5 is not stressed, the spring 6 pushes the top cap 4 to return to the original position.

It should be noted that, the present utility model is not related to the part that is the same as or can be implemented by the prior art.

In addition, in the description of the embodiments of the present utility model, unless explicitly stated or limited otherwise, the terms "mounted," "connected," "configured," and "provided" are to be construed broadly, and may, for example, be fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intermediate medium, or communicate 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.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model.

Claims (6)

1. The high-voltage switch comprises a hollow shell and a switch component arranged in the shell, and is characterized in that the switch component comprises a shell, a thimble, a top cap, a spring, an adjusting screw and a micro switch, wherein the shell is fixed in the shell, one end of the shell is of an open hollow structure, the other end of the shell is in threaded connection with the adjusting screw, one end of the adjusting screw extends to an inner cavity of the shell, the top cap is slidably connected to the inner cavity of the shell, one end of the top cap is elastically connected with the adjusting screw through the spring, the other end of the top cap extends out of the opening of the shell, the micro switch is fixed on one side of the shell, a contact of the micro switch abuts against the end of the top cap of the inner cavity of the shell, one end of the thimble abuts against the other end of the top cap, which is far away from the adjusting screw, and one end of the shell is provided with a through hole which is communicated with the inner cavity of the top cap.

2. The high-voltage switch of claim 1, wherein the housing is in threaded connection with the shell, a guide part capable of sliding the thimble is arranged at one end of the housing far away from the shell, a through hole communicated with the inner cavity of the guide part is formed at one end of the guide part, and the diameter of the through hole is smaller than that of the thimble.

3. The high-voltage switch of claim 2, wherein a retainer ring is disposed in the housing, one end of the top cap abuts against the retainer ring, and the ejector pin penetrates the retainer ring and abuts against the top cap.

4. The high-voltage switch of claim 3, wherein an insulating washer is disposed between the retainer ring and the end face of the housing.

5. The high-voltage switch of claim 3, wherein an O-ring and a nylon pad are arranged between the ejector pin and the inner cavity of the housing.

6. The high-voltage switch of claim 1, wherein the gap in the housing is filled with epoxy resin.