CN217009031U - Explosion-proof isolating switch - Google Patents

Abstract

The utility model relates to an explosion-proof isolating switch which is characterized by comprising a first shell and a second shell which are mutually buckled, wherein an end cover is arranged above the first shell, the end cover penetrates through the first shell through a fastener to be connected with the second shell, a plurality of first gaps are formed in the end cover, a plurality of second gaps are formed in the first shell, and epoxy resin is filled in the first gaps and the second gaps. According to the utility model, the gap of the first shell and the gap of the end cover are filled through epoxy resin, so that the explosion-proof effect is improved, and the explosion-proof device can adapt to some severe occasions.

Description

Explosion-proof isolating switch

Technical Field

The utility model relates to the technical field of isolating switches, in particular to an explosion-proof isolating switch.

Background

The isolating switch is an electric appliance playing an isolating role in a circuit, the working principle and the structure of the isolating switch are simpler, but the requirement on the working reliability is high due to large using amount.

However, with the wider applicability of the disconnecting switch, especially in some severe environments, such as coal mines and other dangerous occasions, the high-temperature environment is likely to cause the disconnecting switch to be burnt or exploded, but most of the existing disconnecting switches do not have the explosion-proof performance, so that the improvement of the disconnecting switch is necessary.

Disclosure of Invention

The utility model aims to provide an explosion-proof isolating switch, which enhances the sealing and explosion-proof effects.

In order to achieve the purpose, the utility model provides the following technical scheme:

the explosion-proof isolating switch is characterized by comprising a first shell and a second shell which are mutually buckled, wherein an end cover is arranged above the first shell, the end cover penetrates through the first shell through a fastener to be connected with the second shell, a plurality of first gaps are formed in the end cover, a plurality of second gaps are formed in the first shell, and epoxy resin is filled in the first gaps and the second gaps.

The utility model further provides that a fixed contact and a movable contact are arranged in the second shell, the fixed contact is fixed in a clamping groove formed on two sides of the second shell, the fixed contact extends out of the second shell, the movable contact is arranged in a placement groove in the second shell, the movable contact comprises a contact block and a contact piece, the contact piece penetrates from one side of the contact block to the other side of the contact block, and the middle part of the movable contact is connected with a driving component for driving the movable contact to be connected with or disconnected from the fixed contact.

The utility model further provides that the driving component comprises a rotating part and a rotating shaft, wherein the rotating part and the rotating shaft synchronously rotate, the rotating shaft penetrates into the rotating part from the end cover, the rotating part is arranged in a rotating hole of the first shell, the rotating part extends towards the second shell to form a rotating column, a limiting column is arranged around the rotating column, a sliding groove is formed in the rotating column, the sliding groove is obliquely arranged downwards along the side surface of the rotating column from the upper part of the rotating column, a concave part is formed in the middle part of the corresponding contact block, sliding blocks are formed on two side walls of the concave part and are matched with the sliding groove, and when the rotating part is driven by the rotating shaft to rotate, the sliding blocks move along the sliding groove to drive the moving contact to move upwards and downwards.

The spring assembly comprises a spring and a spring sleeve, one end of the spring abuts against the inner wall of the spring sleeve, the other end of the spring abuts against the inner wall of the accommodating groove, and the outer wall of the spring sleeve abuts against the outer wall of the rotating part.

The utility model is further provided that the fastening piece is a screw, screw holes are formed in the end cover, the first shell and the second shell, and when the screw is installed in the screw hole, the screw hole passes through the screw hole of the end cover, the screw hole of the first shell and the screw hole in the second shell in sequence, so that the fixed connection of the end cover, the first shell and the second shell is realized.

The utility model has the beneficial effects; 1, filling the gap of the first shell and the gap of the end cover by epoxy resin, improving sealing and explosion-proof effects, and being suitable for explosion or high-temperature occasions; 2, the moving contact, the static contact and the driving component for driving the moving contact to move are used for realizing the breaking and the conduction of the moving contact and the static contact, and the breaking speed is high with simple operation; 3-the mode of the driving component realizes the linear movement of the moving contact in a rotating mode, the structure is simple, and the driving mode is reliable;

drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is an exploded view of an embodiment of the present invention.

Fig. 2 is a top view of the first housing according to the embodiment of the present invention.

FIG. 3 is an assembly view of an embodiment of the present invention.

Reference numeral, 10, a first housing; 20. a second housing; 30. an end cap; 40. a first gap; 50. a second gap; 60. a screw hole; 70. static contact; 80. a moving contact; 90. a card slot; 100. a contact block; 110. a contact piece; 120. a rotating member; 130. a rotating shaft; 140. rotating the hole; 150. rotating the column; 160. a limiting column; 170. a sliding groove; 180. a recessed portion; 190. a slider; 200. accommodating grooves; 210. a spring; 220. a spring housing;

Detailed Description

Embodiments of the present application will be described in detail with reference to the drawings and examples, so that how to implement technical means to solve technical problems and achieve technical effects of the present application can be fully understood and implemented.

As shown in fig. 1 to 3, the present invention is an explosion-proof isolating switch, including a first housing 10 and a second housing 20 that are fastened to each other, an end cover 30 is disposed above the first housing 10, the end cover 30 is connected to the second housing 20 by a fastening member passing through the first housing 10, wherein the fastening member is a screw, specifically, screw holes 60 are formed in the end cover 30, the first housing 10, and the second housing 20, and when a screw is installed in the screw hole 60, the screw holes 60 pass through the screw hole 60 of the end cover 30, the screw hole 60 of the first housing 10, and the screw hole 60 in the second housing 20 in sequence, so as to achieve the fixed connection of the three.

In addition, the end cap 30 is opened with a plurality of first gaps 40, and the first housing 10 is formed with a plurality of second gaps 50, and in order to improve a sealing effect, the first gaps 40 and the second gaps 50 are filled with epoxy resin.

A fixed contact 70 and a movable contact 80 are arranged in the second housing 20, the fixed contact 70 is fixed in a clamping groove 90 formed at two sides of the second housing 20, and the fixed contact 70 extends out of the second housing 20, and here, when the fixed contact 70 extends out of the second housing 20, a corresponding external terminal row can be arranged for switching, so that the connection is safer and more reliable; in addition, the moving contact 80 is arranged in a placement groove in the second housing 20, the moving contact 80 includes a contact block 100 and a contact piece 110, the contact piece 110 penetrates from one side of the contact block 100 to the other side of the contact block 100, and the middle part of the moving contact 80 is connected with a driving component for driving the moving contact 80 to be connected with or disconnected from the static contact 70, that is, the moving contact 80 moves up and down along the placement groove under the action of the driving component and is disconnected from the static contact 70 when moving down; when moving upward, the contact is conducted with the stationary contact 70.

The driving assembly for realizing the above functions comprises a rotating member 120 and a rotating shaft 130 which rotate synchronously, the rotating shaft 130 penetrates into the rotating member 120 from an end cover 30, the rotating member 120 is arranged in a rotating hole 140 of a first shell 10, the rotating member 120 extends towards a second shell 20 to form a rotating column 150, a limiting column 160 is arranged around the rotating column 150, a sliding groove 170 is formed on the rotating column 150, the sliding groove 170 is inclined downwards from the upper part of the rotating column 150 along the side surface of the rotating column 150, a concave part 180 is formed in the middle part of a corresponding contact block 100, sliding blocks 190 are formed on two side walls of the concave part 180, the sliding blocks 190 are matched with the sliding groove 170, when the rotating shaft 130 drives the rotating member 120 to rotate, the sliding blocks 190 move along the sliding groove 170 to drive the moving contact 80 to move upwards and downwards, and accommodating grooves 200 are further formed on two sides of the rotating hole 140, a spring assembly is arranged in the accommodating groove 200 and comprises a spring 210 and a spring 210 sleeve, one end of the spring 210 is abutted to the inner wall of the spring 210 sleeve, the other end of the spring is abutted to the inner wall of the accommodating groove 200, and the outer wall of the spring 210 sleeve is abutted to the outer wall of the rotating part 120.

Specifically, the operation is described as follows, taking an initial state as a conducting state, in the initial state, the contact block 100 is separated from the placing groove at a certain interval, at this time, the sliding block 190 is located at the top end (starting point) of the sliding groove 170, the rotating element 120 is limited in the rotating hole 140 by the spring assembly, when the rotating shaft 130 is given a rotating force by the outside to rotate counterclockwise, the rotating element 120 rotates along with the rotating shaft 130, at this time, the rotating element 120 presses the spring assembly, the axial force of the rotating force must be greater than the pressing force of the spring 210 on the rotating element 120, so that the rotating element 120 can rotate, the angle of one rotation is 90 °, that is, the rotating element 120 rotates 90 ° counterclockwise, in this process, the sliding block 190 moves from the top end of the sliding groove 170 to the end of the sliding groove 170, so as to realize the descending of the contact block 100, and realize the breaking; in the same way, the breaking state is restored to be conducted (the initial state), and only one reverse rotation is needed.

The gap between the first shell 10 and the gap between the end covers 30 are filled with epoxy resin, so that the sealing and explosion-proof effects are improved, and the sealing device can be suitable for being used in some explosion or high-temperature occasions; in addition, the first shell can be also filled with epoxy resin properly, and partial gaps, such as the part A in fig. 1, can be filled under the condition of ensuring the normal operation of the driving assembly, so that the explosion-proof effect can be further improved; secondly, by the moving contact 80, the fixed contact 70 and the driving component for driving the moving contact 80 to move, the disconnection and conduction of the moving contact and the fixed contact 70 are realized, the driving component realizes the linear movement of the moving contact 80 in a rotating manner, the structure is simple, and the driving mode is reliable.

Certain terms are used throughout the description and claims to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, that a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect.

More uses such as 10, first housing; 20. a second housing; 30. an end cap; 40. a first gap; 50. a second gap; 60. a screw hole; 70. static contact; 80. a moving contact; 90. a card slot; 100. a contact block; 110. a contact piece; 120. a rotating member; 130. a rotating shaft; 140. rotating the hole; 150. rotating the column; 160. a limiting column; 170. a sliding groove; 180. a recessed portion; 190. a slider; 200. accommodating grooves; 210. a spring; 220. it should be noted that terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.

While the foregoing description shows and describes several preferred embodiments of the utility model, it is to be understood, as noted above, that the utility model is not limited to the forms disclosed herein, but is not intended to be exhaustive of other embodiments, and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims (5)

1. The explosion-proof isolating switch is characterized by comprising a first shell and a second shell which are mutually buckled, wherein an end cover is arranged above the first shell, the end cover penetrates through the first shell through a fastener to be connected with the second shell, a plurality of first gaps are formed in the end cover, a plurality of second gaps are formed in the first shell, and epoxy resin is filled in the first gaps and the second gaps.

2. The explosion-proof isolating switch of claim 1, wherein a fixed contact and a movable contact are disposed in the second housing, the fixed contact is fixed in a slot formed on two sides of the second housing, the fixed contact extends out of the second housing, the movable contact is disposed in a mounting slot in the second housing, the movable contact includes a contact block and a contact piece, the contact piece penetrates from one side of the contact block to the other side of the contact block, and a driving component for driving the movable contact to be connected with or disconnected from the fixed contact is connected to a middle portion of the movable contact.

3. The explosion-proof isolating switch as claimed in claim 2, wherein the driving assembly includes a rotating member and a rotating shaft, the rotating shaft is inserted into the rotating member from an end cap, the rotating member is disposed in the rotating hole of the first housing, the rotating member extends toward the second housing to form a rotating post, a limiting post is disposed around the rotating post, the rotating post is formed with a sliding groove, the sliding groove is disposed obliquely downward from the top of the rotating post along the side surface of the rotating post, a recess is formed in the middle of the corresponding contact block, sliding blocks are formed on two side walls of the recess, the sliding blocks are adapted to the sliding groove, and when the rotating shaft drives the rotating member to rotate, the sliding blocks move along the sliding groove to drive the moving contact to move up and down.

4. An explosion-proof isolating switch according to claim 3, wherein accommodating grooves are further provided on both sides of the rotating hole, a spring assembly is provided in the accommodating groove, the spring assembly includes a spring and a spring sleeve, one end of the spring abuts against an inner wall of the spring sleeve, the other end abuts against an inner wall of the accommodating groove, and an outer wall of the spring sleeve abuts against an outer wall of the rotating member.

5. The explosion-proof isolating switch of claim 4, characterized in that the fastening member is a screw, screw holes are formed in the end cover, the first housing and the second housing, and when a screw is installed in the screw hole, the screw hole of the end cover, the screw hole of the first housing and the screw hole in the second housing are sequentially penetrated through to realize the fixed connection of the three.

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