CN220456333U - Automatic safety switch for distribution network - Google Patents

Abstract

The utility model provides an automatic safety switch for a distribution network, which comprises a box body, wherein openings at the left side and the right side of the middle part of the interior of the box body are respectively integrally connected with binding posts, and the interior of each binding post is respectively provided with a bolt hole, wherein the bolt holes are all positioned at the outer side of the box body; a push rod is longitudinally arranged at the upper opening in the box body in a sliding manner, and the upper end of the push rod is connected with a pressing plate through a bolt; the outer wall of the push rod is sleeved with a spring, and the spring is positioned between the pressing plate and the box body, and is characterized in that a T-shaped fixing frame is connected with the middle part of the bottom of the inner side of the box body through a screw; the lower extreme of push rod is connected with the face contact link plate structure. The insulating block, the limiting block, the elastic connecting plate, the contact head, the mounting seat, the bimetallic strip, the clamping block and the coil are arranged, so that the effect of surface contact conduction is realized, and the electric energy conducting capacity of the safety switch can be effectively improved.

Description

Automatic safety switch for distribution network

Technical Field

The utility model belongs to the technical field of distribution network safety switches, and particularly relates to an automatic distribution network safety switch.

Background

The distribution network automatic safety switch is a device which is arranged in a distribution network and used for automatically cutting off a circuit, can protect the circuit to a certain extent, and has the publication number of CN111508792B, and comprises a shell, a button, a limiting plate, a first spring, a second spring, a touch plate, a limiting block, a metal block, a third spring, an iron core, a coil, a saw tooth rod, a gear, a binding post, a supporting rod, a conductive post, a grounding post and a probe; the top sliding connection of casing has the button, the periphery fixed mounting of button has the limiting plate, the bottom fixedly connected with first spring of limiting plate, the bottom of button is through second spring fixedly connected with touch panel, the left and right sides sliding connection of inside button of casing has the stopper, and this safety switch still has some problems in the in-service use, like: the contact area between the contact plate and the conductive column is small, so that the problem of limited conductive electric energy can be caused.

Disclosure of Invention

In order to solve the technical problems, the utility model provides an automatic safety switch for a distribution network, which can realize the effect of surface contact conduction and can effectively improve the electric energy conducting capacity of the safety switch.

The technical scheme is as follows: the automatic safety switch for the distribution network comprises a box body, wherein the openings at the left side and the right side of the middle part in the box body are respectively and integrally connected with binding posts, and bolt holes are respectively formed in the binding posts, and the bolt holes are all positioned at the outer side of the box body; a push rod is longitudinally arranged at the upper opening in the box body in a sliding manner, and the upper end of the push rod is connected with a pressing plate through a bolt; the outer wall of the push rod is sleeved with a spring, and the spring is positioned between the pressing plate and the box body, and is characterized in that a T-shaped fixing frame is connected with the middle part of the bottom of the inner side of the box body through a screw; the lower extreme of push rod is connected with the face contact link plate structure.

Preferably, the surface contact adapter plate structure comprises an insulating block, and a limiting block is integrally connected to the middle part of the upper part of the insulating block; the left side and the right side of the inside of the insulating block are respectively and integrally connected with an elastic connecting plate, and the outer side of the lower part of the elastic connecting plate is respectively and integrally connected with a contact; the front side and the rear side of the middle part of the lower part of the insulating block are respectively and integrally connected with a mounting seat, and the lower side of the inside of the mounting seat is respectively and integrally connected with a bimetallic strip, wherein the lower part of the inside of the bimetallic strip is respectively and integrally connected with a clamping block; coils are respectively wound at the middle part of the outer wall of the bimetallic strip; the input of coil respectively with the right side elasticity linking board electric connection setting, the output of coil respectively with the left side elasticity linking board electric connection setting.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the insulation block, the limiting block, the elastic connecting plate, the contact head, the mounting seat, the bimetallic strip, the clamping block and the coil are arranged, so that the effect of surface contact conduction is realized, and the electric energy conducting capacity of the safety switch can be effectively improved.

Drawings

FIG. 1 is a schematic view of the external structure of the present utility model;

FIG. 2 is a schematic view of the internal structure of the present utility model;

fig. 3 is a schematic structural view of the surface contact adapter structure of the present utility model.

In the figure:

1. a case body; 2. binding posts; 3. bolt holes; 4. a T-shaped fixing frame; 5. a push rod; 6. pressing the plate; 7. a spring; 8. a surface contact engagement plate structure; 81. an insulating block; 82. a limiting block; 83. a flexible splice plate; 84. a contact; 85. a mounting base; 86. bimetallic strips; 87. a clamping block; 88. a coil.

Description of the embodiments

The utility model is specifically described below with reference to the accompanying drawings, as shown in fig. 1 and fig. 2, the distribution network automatic safety switch comprises a box body 1, wherein the openings at the left side and the right side of the middle part inside the box body 1 are respectively and integrally connected with a binding post 2, the inside of the binding post 2 is respectively provided with a bolt hole 3, and the bolt holes 3 are all positioned at the outer side of the box body 1; a push rod 5 is longitudinally arranged at the upper side opening in the box body 1 in a sliding manner, and the upper end of the push rod 5 is connected with a pressing plate 6 through a bolt; the outer wall of the push rod 5 is sleeved with a spring 7, and the spring 7 is positioned between the pressing plate 6 and the box body 1; the middle part of the bottom inside the box body 1 is connected with a T-shaped fixing frame 4 by a screw.

The automatic safety switch of the distribution network further comprises a surface contact adapter plate structure 8, the surface contact adapter plate structure 8 is connected with the push rod 5, the effect of surface contact conduction is achieved, and the electric energy conducting capacity of the safety switch can be effectively improved.

In this embodiment, referring to fig. 3, the surface contact adapter plate structure 8 includes an insulating block 81, and a limiting block 82 is integrally connected to the middle part of the upper part of the insulating block 81; the left side and the right side of the inside of the insulating block 81 are respectively and integrally connected with an elastic joint plate 83, and the outer side of the lower part of the elastic joint plate 83 is respectively and integrally connected with a contact head 84; the front side and the rear side of the middle part of the lower part of the insulating block 81 are respectively and integrally connected with a mounting seat 85, and the lower side of the inner part of the mounting seat 85 is respectively and integrally connected with a bimetallic strip 86, wherein the lower part of the inner side of the bimetallic strip 86 is respectively and integrally connected with a clamping block 87; coils 88 are respectively wound on the middle parts of the outer walls of the bimetallic strips 86; when the T-shaped fixing frame 4 is used, firstly, the safety switch is connected in series to a power distribution network through the binding post 2, then an operator can downwards press the push rod 5 through the pressing plate 6 and compress the spring 7, the push rod 5 drives the bimetallic strip 86 to downwards move through the limiting block 82, when the bimetallic strip 86 moves to the outer side of the T-shaped fixing frame 4, the horizontal section of the T-shaped fixing frame 4 pushes the bimetallic strip 86 to the outer side through the clamping block 87, the bimetallic strip 86 bends, and as the bimetallic strip 86 moves downwards continuously, the bimetallic strip 86 resets due to elasticity of the operator after the clamping block 87 passes through the horizontal section of the T-shaped fixing frame 4, and at the moment, the bimetallic strip 86 is clamped with the horizontal section of the T-shaped fixing frame 4 through the clamping block 87; in the process of moving down the insulating block 81, the elastic connecting plate 83 is driven to move down, the elastic connecting plate 83 drives the contact head 84 to move down, when the contact head 84 is abutted against the upper part of the binding post 2, the bimetallic strip 86 is just clamped with the horizontal section of the T-shaped fixing frame 4 through the clamping block 87, and compared with the prior art, the contact head and the binding post are in surface-to-surface contact, the contact area is large, and therefore the electric energy conducting capacity can be effectively enhanced, and the surface contact conducting effect is realized.

In this embodiment, specifically, the upper side of the inner portion of the stopper 82 is integrally connected with the lower end of the push rod 5.

In this embodiment, specifically, the bimetal 86 is respectively clamped to the lower part of the horizontal section of the T-shaped fixing frame 4 through a clamping block 87.

In this embodiment, specifically, the lower portions of the contacts 84 abut against the upper inner sides of the posts 2, respectively.

In this embodiment, specifically, the clamping block 87 is a right triangle clamping block, and the inclined surface of the clamping block 87 is downward.

In this embodiment, specifically, the insulating block 81 is a nylon plastic block with a rectangular cross section.

In this embodiment, specifically, the limiting block 82 is a nylon plastic block with a circular cross section.

In this embodiment, specifically, the elastic joint plate 83 is an elastic copper plate.

In this embodiment, the contact 84 is a rectangular copper contact.

In this embodiment, specifically, the mounting seat 85 is a rectangular nylon plastic seat.

In this embodiment, specifically, the bimetal 86 adopts the bimetal with different thermal expansion coefficients, plays the role of being heated and bent, when the power distribution network breaks down and leads to the current rising, the bimetal 86 heats and bends outwards, at this time, the bimetal 86 drives the clamping block 87 to move outwards and separate from the horizontal section of the T-shaped fixing frame 4, and the spring 7 which stores energy is arranged between the box body 1 and the pressing plate 6, so that the spring 7 pushes the pressing plate 6 to move upwards, the pressing plate 6 drives the bimetal 86 to move upwards through the push rod 5, the limiting block 82, the insulating block 81 and the mounting seat 85, and meanwhile, the insulating block 81 drives the contact head 84 to separate from the binding post 2 through the elastic connecting plate 83, thereby cutting off the circuit and realizing the effect of protecting the circuit.

In this embodiment, specifically, the box body 1 is a nylon plastic box, which plays an insulating role.

Principle of operation

When the safety switch is used, the safety switch is connected in series to a power distribution network through the binding post 2, then an operator can downwards press the push rod 5 through the pressing plate 6 and compress the spring 7, so that the push rod 5 drives the bimetallic strip 86 to downwards move through the limiting block 82, the insulating block 81 and the mounting seat 85, when the bimetallic strip 86 moves to the outer side of the T-shaped fixing frame 4, the bimetallic strip 86 is pushed to the outer side through the clamping block 87 by the horizontal section of the T-shaped fixing frame 4, the bimetallic strip 86 is bent, and as the bimetallic strip 86 continues to downwards move, after the clamping block 87 passes through the horizontal section of the T-shaped fixing frame 4, the bimetallic strip 86 can reset due to self elasticity, and at the moment, the bimetallic strip 86 is clamped with the horizontal section of the T-shaped fixing frame 4 through the clamping block 87; in the process of moving down the insulating block 81, the elastic connecting plate 83 is driven to move down, the elastic connecting plate 83 drives the contact head 84 to move down, when the contact head 84 is abutted against the upper part of the binding post 2, the bimetallic strip 86 is just clamped with the horizontal section of the T-shaped fixing frame 4 through the clamping block 87, and compared with the prior art, the contact head and the binding post are in surface-to-surface contact, the contact area is large, and therefore the electric energy conducting capacity can be effectively enhanced, and the surface contact conducting effect is realized.

By using the technical scheme of the utility model or under the inspired by the technical scheme of the utility model, a similar technical scheme is designed by a person skilled in the art, so that the technical effects are achieved, and the technical effects fall into the protection scope of the utility model.

Claims (6)

1. The utility model provides an automatic safety switch of distribution network, includes box body (1), and box body (1) inside middle part left and right sides opening part is connected with terminal (2) in an organic whole respectively, and has seted up bolt hole (3) respectively in terminal (2) inside, and wherein bolt hole (3) all are located the outside of box body (1); a push rod (5) is longitudinally arranged at the opening at the upper middle side in the box body (1) in a sliding manner, and a pressing plate (6) is connected to the upper end of the push rod (5) through a bolt; the outer wall of the push rod (5) is sleeved with a spring (7), and the spring (7) is positioned between the pressing plate (6) and the box body (1), and is characterized in that a T-shaped fixing frame (4) is connected with the middle part of the bottom of the inner side of the box body (1) through a screw; the lower end of the push rod (5) is connected with a surface contact adapter plate structure (8).

2. The distribution network automatic safety switch according to claim 1, wherein the surface contact adapter plate structure (8) comprises an insulating block (81), and a limiting block (82) is integrally connected to the middle part of the upper part of the insulating block (81); the left side and the right side of the inside of the insulating block (81) are respectively and integrally connected with an elastic joint plate (83), and the outer side of the lower part of the elastic joint plate (83) is respectively and integrally connected with a contact head (84); the front side and the rear side of the middle part of the lower part of the insulating block (81) are respectively and integrally connected with a mounting seat (85), and the lower sides of the inner parts of the mounting seats (85) are respectively and integrally connected with bimetallic strips (86), wherein clamping blocks (87) are respectively and integrally connected with the lower parts of the inner sides of the bimetallic strips (86); coils (88) are respectively wound at the middle parts of the outer walls of the bimetallic strips (86); the input ends of the coils (88) are respectively and electrically connected with the elastic connecting plates (83) on the right side, and the output ends of the coils (88) are respectively and electrically connected with the elastic connecting plates (83) on the left side.

3. The automatic safety switch for distribution network according to claim 2, wherein the upper side of the inside of the limiting block (82) is integrally connected with the lower end of the push rod (5).

4. The automatic safety switch of distribution network according to claim 2, wherein the bimetallic strip (86) is respectively clamped with the lower part of the horizontal section of the T-shaped fixing frame (4) through a clamping block (87).

5. A distribution network automatic safety switch according to claim 2, characterized in that the lower parts of said contacts (84) are respectively abutted against the inner sides of the upper parts of the binding posts (2).

6. The automatic safety switch for distribution network according to claim 2, wherein the clamping block (87) is a right triangle clamping block, and the inclined surface of the clamping block (87) is downward.