CN111968876A - Household high-voltage vacuum circuit breaker - Google Patents

Abstract

The invention discloses a household high-voltage vacuum circuit breaker, which relates to the technical field of high-voltage vacuum circuit breakers. The invention comprises a casing; a static contact and a movable contact are arranged in the casing; a first guide cylinder and a second guide cylinder are fixedly connected to the inner bottom surface of the casing; the static contact is fixed in a fixed frame; the fixed frame is a cylindrical structure , and a first cavity for accommodating the static contact is formed inside the fixed frame; the fixed frame is provided with an annular limit groove on the peripheral side to limit the movement of the movable frame; the movable contact is fixed in the movable frame; the movable frame is a cover body A second cavity for accommodating the movable contact is formed inside the movable frame; a support ring is formed at the opening of the movable frame; the inner wall of the support ring is slidably matched with the annular limit groove; the movable frame is connected with a drive assembly. The invention solves the problems of low assembly efficiency and poor stability of the action mechanism caused by many parts of the existing high-voltage vacuum circuit breaker through the functions of the fixed frame, the movable frame and the driving assembly.

Description

A household high-voltage vacuum circuit breaker

technical field

The invention belongs to the technical field of high-voltage vacuum circuit breakers, in particular to a household high-voltage vacuum circuit breaker.

Background technique

Circuit breaker is inseparable from the use of electricity. A circuit breaker refers to a device that can close, carry and break current under normal circuit conditions, and can close, carry and break current under abnormal circuit conditions within a specified time. switchgear. The vacuum circuit breaker is named because the arc extinguishing medium and the insulating medium of the contact gap after arc extinguishing are high vacuum. It has the advantages of small size, light weight, and suitable for frequent operation, so it has been widely used. The high-voltage vacuum circuit breaker is used to connect or break the load circuit, and is the core device in the high-voltage switchgear, ring main unit and substation. However, the existing high-voltage vacuum circuit breaker has many parts, low assembly efficiency, and troublesome operation and control, which makes it inconvenient for maintenance personnel to perform maintenance operations, and the stability of the action mechanism of the high-voltage vacuum circuit breaker is poor.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a household high-voltage vacuum circuit breaker, which solves the problem of low assembly efficiency and poor stability of the action mechanism caused by many parts of the existing high-voltage vacuum circuit breaker through the functions of the fixed frame, the movable frame and the driving assembly. The problem.

In order to solve the above-mentioned technical problems, the present invention is achieved through the following technical solutions:

The invention relates to a household high-voltage vacuum circuit breaker, comprising a casing; a static contact and a moving contact are arranged in the casing; a first guide cylinder and a second guide cylinder are fixedly connected to the inner bottom surface of the casing; The static contact is fixed in the fixing frame; the fixing frame is a cylindrical structure, and a first cavity for accommodating the static contact is formed inside the fixing frame; an annular limit groove; the movable contact is fixed in the movable frame; the movable frame is a cover structure, and a second cavity for accommodating the movable contact is formed inside the movable frame; the opening of the movable frame is formed There is a support ring; the inner wall of the support ring is slidably matched with the annular limit groove; the movable frame is connected with a drive assembly.

Further, the inner wall of the first guide cylinder is fitted with a first elastic member; the inner wall of the second guide cylinder is fitted with a second elastic member; both the first elastic member and the second elastic member are spring structures.

Further, a pair of guide holes are defined on the inner top wall of the annular limiting groove; a pair of guide posts are fixedly connected on the upper surface of the support ring; and the guide posts are slidably connected with the inner wall of the guide holes.

Further, a third elastic piece is sleeved on the peripheral side surface of the guide column, and the third elastic piece is matched with the inner top wall of the annular limiting groove; the third elastic piece is a compression spring.

Further, a horizontally arranged rectangular frame is fixedly connected to the lower surface of the movable frame; a first sliding rod is fixedly connected to the bottom of the rectangular frame; and the first sliding rod is slidably connected to the inner wall of the second guide cylinder.

Further, a second sliding rod is fixedly connected to the lower surface of the movable frame; the second sliding rod is slidably connected to the inner wall of the first guide cylinder.

Further, the drive assembly is a motor with a circular plate fixed at the output end; a limit column is fixedly connected to the edge of the circular plate; the limit column is matched with the inner wall of the rectangular frame.

The present invention has the following beneficial effects:

1. In the present invention, a third elastic member is sleeved on the peripheral side of the guide column, which is convenient for buffering and damping the movement of the movable frame; the sliding connection between the guide column and the inner wall of the guide hole is convenient for positioning and guiding the movement of the movable frame, so that the movement of the movable frame is slidably connected. The contacts can move up and down smoothly.

2. In the present invention, the second sliding rod is slidably connected to the inner wall of the first guide cylinder, which facilitates further guiding the movement of the movable frame and the moving contact, assists the separation and contact of the moving contact, and improves the stability of movement.

3. The present invention cooperates with the inner wall of the rectangular frame through the limit column, and drives the limit column to rotate through the operation of the driving component, thereby driving the rectangular frame and the movable frame to move up and down, so as to complete the separation and contact between the moving contact and the static contact, and the control is simple , less parts.

Of course, it is not necessary for any product embodying the present invention to achieve all of the above-described advantages simultaneously.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

1 is a schematic structural diagram of a household high-voltage vacuum circuit breaker according to the present invention;

In the accompanying drawings, the list of components represented by each number is as follows:

1-shell, 2-static contact, 3-fixed frame, 4-movable frame, 5-drive assembly, 6-moving contact, 101-first guide cylinder, 102-second guide cylinder, 103-first Elastic part, 104-Second elastic part, 301-Annular limit groove, 302-Guide hole, 401-Support ring, 402-Guide post, 403-Third elastic part, 404-Rectangular frame, 405-First sliding rod , 406-Second Slider, 501-Limiting Post.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Referring to FIG. 1 , the present invention is a household high-voltage vacuum circuit breaker, comprising a casing 1; a static contact 2 and a movable contact 6 are arranged in the casing 1; The guide cylinder 101 and the second guide cylinder 102; the static contact 2 is fixed in the fixing frame 3; the fixing frame 3 is a cylindrical structure, and a first cavity for accommodating the static contact 2 is formed inside the fixing frame 3; The frame 3 is provided with an annular limit groove 301 on the peripheral side that restricts the movement of the movable frame 4; the movable contact 6 is fixed in the movable frame 4; the movable frame 4 is a cover structure, and a movable contact is formed inside the movable frame 4 The second cavity of the head 6; a support ring 401 is formed at the opening of the movable frame 4; the inner wall of the support ring 401 is slidably matched with the annular limiting groove 301; the movable frame 4 is connected with the drive assembly 5.

Preferably, as shown in FIG. 1 , the inner wall of the first guide cylinder 101 is fitted with a first elastic member 103 ; the inner wall of the second guide cylinder 102 is fitted with a second elastic member 104 ; the first elastic member 103 and the second elastic member 104 are both spring structure.

Preferably, as shown in FIG. 1 , a pair of guide holes 302 are formed on the inner top wall of the annular limiting groove 301; a pair of guide posts 402 are fixedly connected to the upper surface of the support ring 401; The movement of the movable frame 4 is positioned and guided, so that the movable contact 6 can move up and down smoothly.

Preferably, as shown in FIG. 1 , a third elastic member 403 is sleeved on the peripheral side of the guide post 402, and the third elastic member 403 is matched with the inner top wall of the annular limiting groove 301; the third elastic member 403 is a compression spring, It is convenient to buffer and shock the movement of the movable frame 4 .

Preferably, as shown in FIG. 1 , a horizontally arranged rectangular frame 404 is fixedly connected to the lower surface of the movable frame 4 ; a first sliding rod 405 is fixedly connected to the bottom of the rectangular frame 404 ; Connection, the movement of the drive assembly 5 drives the limiting column 501 to move left and right in the rectangular frame 404, thereby driving the movable frame 4 to move up and down.

Preferably, as shown in FIG. 1 , a second sliding rod 406 is fixedly connected to the lower surface of the movable frame 4; The movement is guided to assist the separation and contact of the movable contact 6 and improve the stability of the movement.

Preferably, as shown in FIG. 1 , the driving assembly 5 is a motor with a circular plate fixed at the output end; a limit post 501 is fixedly connected to the edge of the circular plate; The limiting column 501 is driven to rotate, thereby driving the rectangular frame 404 and the movable frame 4 to move up and down, thereby completing the separation and contact of the movable contact 6 and the static contact 2, with simple control and few parts.

In the description of this specification, description with reference to the terms "one embodiment," "example," "specific example," etc. means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one aspect of the present invention. in one embodiment or example. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above-disclosed preferred embodiments of the present invention are provided only to help illustrate the present invention. The preferred embodiments do not exhaust all the details, nor do they limit the invention to only the described embodiments. Obviously, many modifications and variations are possible in light of the content of this specification. These embodiments are selected and described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art of high-voltage vacuum circuit breakers can better understand and utilize the present invention. The present invention is to be limited only by the claims and their full scope and equivalents.

Claims (7)

1. A household high-voltage vacuum circuit breaker, comprising a housing (1); a static contact (2) and a moving contact (6) are arranged in the housing (1); it is characterized in that: A first guide cylinder (101) and a second guide cylinder (102) are fixedly connected to the inner bottom surface of the casing (1); The static contact (2) is fixed in the fixing frame (3); the fixing frame (3) is a cylindrical structure, and a first accommodating static contact (2) is formed inside the fixing frame (3). a cavity; the fixed frame (3) is provided with an annular limit groove (301) on the peripheral side surface that restricts the movement of the movable frame (4); The movable contact (6) is fixed in the movable frame (4); the movable frame (4) is a cover structure, and a second housing for accommodating the movable contact (6) is formed inside the movable frame (4). a cavity; a support ring (401) is formed at the opening of the movable frame (4); The inner wall of the support ring (401) is in sliding fit with the annular limiting groove (301); The movable frame (4) is connected with a drive assembly (5). 2. The household high-voltage vacuum circuit breaker according to claim 1, wherein a first elastic member (103) is matched with the inner wall of the first guide cylinder (101); the second guide cylinder (102) ) the inner wall is matched with a second elastic member (104); The first elastic member (103) and the second elastic member (104) are both spring structures. 3. A household high-voltage vacuum circuit breaker according to claim 1 or 2, characterized in that a pair of guide holes (302) are provided on the inner top wall of the annular limiting groove (301); A pair of guide posts (402) are fixedly connected to the upper surface of the support ring (401); the guide posts (402) are slidably connected to the inner wall of the guide hole (302). 4. The household high-voltage vacuum circuit breaker according to claim 3, wherein a third elastic member (403) is sleeved on the peripheral side surface of the guide post (402), and the third elastic member (403) It is matched with the inner top wall of the annular limiting groove (301); the third elastic member (403) is a compression spring. 5. A household high-voltage vacuum circuit breaker according to claim 1 or 4, wherein a horizontally arranged rectangular frame (404) is fixedly connected to the lower surface of the movable frame (4); 404) The bottom is fixedly connected with a first sliding rod (405); The first sliding rod (405) is slidably connected with the inner wall of the second guide cylinder (102). 6. The household high-voltage vacuum circuit breaker according to claim 5, wherein a second sliding rod (406) is fixedly connected to the lower surface of the movable frame (4); the second sliding rod (406) ) is slidably connected with the inner wall of the first guide cylinder (101). 7 . The household high-voltage vacuum circuit breaker according to claim 6 , wherein the driving component ( 5 ) is a motor whose output end is fixed with a circular plate; the edge of the circular plate is fixedly connected with a limit position. 8 . A column (501); the limiting column (501) is matched with the inner wall of the rectangular frame (404).

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