CN221176145U

CN221176145U - Combined switch with fuse

Info

Publication number: CN221176145U
Application number: CN202322759266.1U
Authority: CN
Inventors: 曹林; 崔华; 何春; 王靖
Original assignee: Shanghai Siyuan Low Voltage Switchgear Co ltd
Current assignee: Shanghai Siyuan Low Voltage Switchgear Co ltd
Priority date: 2023-10-13
Filing date: 2023-10-13
Publication date: 2024-06-18
Anticipated expiration: 2033-10-13

Abstract

A combination switch with a fuse, characterized in that: the novel high-voltage power supply comprises at least 2 pole isolating switches (m) and at least 1 pole fuses (n), wherein the at least 2 pole isolating switches (m) and the at least 1 pole fuses (n) are combined into a whole, the at least 1 pole fuses (n) comprise a shell (1), a fusing device (2) is arranged in an inner cavity of the shell (1), two ends of the fusing device (2) are respectively connected with corresponding wiring bars, one ends of the corresponding wiring bars are connected with corresponding one ends of two ends of the fusing device (2), and the other ends of the corresponding wiring bars extend out of the shell (1). Through fuse and wiring row direct connection, need not the switching and arrange the connection, practiced thrift the cost, fuse device and wiring row direct connection have reduced the changeover point simultaneously, have reduced the temperature rise, and the consumption is few, has practiced thrift the energy.

Description

Combined switch with fuse

Technical Field

The utility model belongs to the technical field of switches, and particularly relates to a combined switch with a fuse.

Background

The term switch is interpreted as on and off. It refers to an element that can open a circuit, interrupt a current, or cause it to flow to other circuits. The most common switch is a human operated electromechanical device in which there is one or several contacts. The "closed of the contacts means that the contacts are conductive, allowing current to flow; an "open" of the switch indicates that the contact is not conducting to form an open circuit and no current is allowed to flow. The development history of the switch is developed from the original knife switch needing manual operation to the current intelligent switch applied to various large-scale electrical control equipment, the functions of the switch are more and more, and the safety is higher and higher.

Along with the development of direct current power systems such as photovoltaic, energy storage, rail traffic, data centers and the like, the application of the switch in the direct current systems is becoming wider and wider. In order to improve the working voltage and breaking capacity of a switch in a direct current power system, in the prior art, a conventional isolating switch and a conventional fuse commonly used in an alternating current power system are commonly combined to control the switching function of the direct current power system. However, in the mode of combining the isolating switch and the fuse to control the switching function of the direct current power system, the working voltage and breaking capacity of the switch in the direct current power system can be improved, but in the prior art, the part of the isolating switch and the fuse, which is connected with the wiring board, is generally switched through the switching board so as to fulfill the aim of replacing the fuse from the front of the combined switch after the fuse is blown, but the mode of switching through the switching board is extremely high in cost.

Disclosure of utility model

The utility model aims at solving the defects that the fuse is replaced from the front side of the combined switch after being blown by the transfer row in the combined use of the existing isolating switch and the fuse, and the cost is high.

Technical proposal

In order to achieve the above object, the present utility model provides a combination switch with a fuse, characterized in that: the novel high-voltage power supply comprises at least 2-pole isolating switches and at least 1-pole fuses, wherein the at least 2-pole isolating switches and the at least 1-pole fuses are combined into a whole, the at least 1-pole fuses comprise a shell, a fusing device is arranged in an inner cavity of the shell, two ends of the fusing device are respectively connected with corresponding wiring rows, one ends of the corresponding wiring rows are connected with corresponding one of two ends of the fusing device, and the other ends of the corresponding wiring rows extend out of the shell.

In one embodiment, the upper end of the fusing device is connected with one end of an upper wiring row, and the other end of the upper wiring row extends out from the back of the inner cavity of the shell to the rear of the shell;

The lower extreme of fuse device connects the one end of lower wiring row, the other end of lower wiring row is followed shell inner chamber back stretches out to the casing rear.

In one embodiment, the housing includes a fuse base and a fuse upper cover that are assembled together, the fuse upper cover sealing an opening in the front of the fuse base to form the housing.

In one embodiment, the upper end of the fusing device is connected with one end of an upper wiring row through a screw, and the other end of the upper wiring row extends out from the back of the inner cavity of the shell to the rear of the shell;

The lower extreme of fuse device passes through screw two and connects the one end of lower wiring row, the other end of lower wiring row follows the casing inner chamber back stretches out to the casing rear.

In one embodiment, the wiring is arranged in a straight line.

In one embodiment, an insulating partition is disposed in the inner cavity of the housing on a side of the fuse device facing the upper cover of the fuse.

In one embodiment, the fuse upper cover is mounted on the fuse base by three locks of screws.

In one embodiment, the screw III extends from the front surface of the upper cover of the fuse into the inner cavity of the shell so as to be locked on the base of the fuse.

Advantageous effects

The utility model provides a combined switch with a fuse, which is characterized in that: the novel high-voltage power supply comprises at least 2-pole isolating switches and at least 1-pole fuses, wherein the at least 2-pole isolating switches and the at least 1-pole fuses are combined into a whole, the at least 1-pole fuses comprise a shell, a fusing device is arranged in an inner cavity of the shell, two ends of the fusing device are respectively connected with corresponding wiring rows, one ends of the corresponding wiring rows are connected with corresponding one of two ends of the fusing device, and the other ends of the corresponding wiring rows extend out of the shell. Through fusing device and wiring row direct connection, need not the switching and arrange, practiced thrift product cost, fusing device and wiring row direct connection simultaneously have reduced the changeover point, have reduced the temperature rise, and the consumption is few, has practiced thrift the energy.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a fuse mounting in an embodiment of the present utility model;

FIG. 2 is an exploded view of a fuse mount in an embodiment of the present utility model;

FIG. 3 is an exploded front schematic view of a fuse in an embodiment of the present utility model;

Fig. 4 is a cross-sectional view taken along the direction a in fig. 3.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and the like are used in the description of the present application for the purpose of illustration only and do not represent the only embodiment.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" on a second feature may be that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through intermedial media. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely under the second feature, or simply indicating that the first feature is less level than the second feature.

Unless defined otherwise, all technical and scientific terms used in the specification of the present application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used in the description of the present application includes any and all combinations of one or more of the associated listed items.

Examples

In the combined use of the existing disconnecting switch and the fuse, the fuse device is switched through the switching row to meet the requirement that the fuse is replaced from the front side of the combined switch after being blown, so that the cost is high, in order to solve the problem, as shown in the accompanying drawings 1 and 2, the embodiment provides the combined switch with the fuse, which comprises at least 2 poles of disconnecting switches m and at least 1 pole of fuses n, the at least 2 poles of disconnecting switches m and the at least 1 pole of fuses n are combined into a whole, the at least 1 pole of fuses n comprise a shell 1, the fuse device 2 is arranged in an inner cavity of the shell 1, two ends of the fuse device 1 are respectively connected with corresponding wiring rows, one ends of the corresponding wiring rows are connected with corresponding one ends of two ends of the fuse device 1, and the other ends of the corresponding wiring rows extend out of the shell 1. In this embodiment, the number of the at least 2-pole isolating switches m is 2, the number of the at least 1-pole fuses n is 2, and the 2 fuses n are respectively installed on the left side and the right side of the whole body formed by the 2 isolating switches m. The wiring is arranged in a straight line. The wiring rows include an upper wiring row 3a and a lower wiring row 3b.

In this embodiment, as shown in fig. 2,3 and 4, the housing 1 includes a fuse base 1a and a fuse upper cover 1b, the fuse upper cover 1b and the fuse base 1a are assembled together, and the fuse upper cover 1b covers an opening portion on the front face of the fuse base 1a to form the housing 1. Further, the fuse upper cover 1b is locked to the fuse base 1a by screws three 4 c. The screw III 4c extends into the inner cavity of the shell 1 from the front surface of the upper fuse cover 1b so as to be locked on the fuse base 1 a.

Specifically, as shown in fig. 4, the upper end of the fusing device 2 is connected to one end of the upper wiring line 3a, and the other end of the upper wiring line 3a extends out from the back of the inner cavity of the housing 1 to the rear of the housing 1; the lower end of the fusing device 2 is connected with one end of a lower wiring row 3b, and the other end of the lower wiring row 3b extends out from the back of the inner cavity of the shell 1 to the rear of the shell 1. In this embodiment, the upper end of the fusing device 2 is connected to one end of the upper wiring row 3a through a screw 4a, and the other end of the upper wiring row 3a extends out from the back of the inner cavity of the housing 1 to the rear of the housing 1; the lower end of the fusing device 2 is connected with one end of a lower wiring row 3b through a second screw 4b, and the other end of the lower wiring row 3b extends out from the back of the inner cavity of the shell 1 to the rear of the shell 1.

Meanwhile, an insulating partition plate is arranged on one side, facing the upper cover 1b of the fuse, of the fuse device 2 in the inner cavity of the shell 1, so that damage of short-circuit current to the shell 1 is effectively prevented.

According to the combined switch with the fuse, the fuse device is directly connected with the wiring bars without connecting the wiring bars, so that the product cost is saved, meanwhile, the fuse device is directly connected with the wiring bars, the switching point is reduced, the temperature rise is reduced, the power consumption is low, and the energy is saved. And after the fuse is burned off, the fuse is taken down and replaced integrally.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples illustrate only a few embodiments of the application and are described in detail herein without thereby limiting the scope of the application. 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 application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims

1. A combination switch with a fuse, characterized in that: the novel high-voltage power supply comprises at least 2 pole isolating switches (m) and at least 1 pole fuses (n), wherein the at least 2 pole isolating switches (m) and the at least 1 pole fuses (n) are combined into a whole, the at least 1 pole fuses (n) comprise a shell (1), a fusing device (2) is arranged in an inner cavity of the shell (1), two ends of the fusing device (2) are respectively connected with corresponding wiring bars, one ends of the corresponding wiring bars are connected with corresponding one ends of two ends of the fusing device (2), and the other ends of the corresponding wiring bars extend out of the shell (1).

2. A fused combination switch as defined in claim 1 wherein: the upper end of the fusing device (2) is connected with one end of an upper wiring row (3 a), and the other end of the upper wiring row (3 a) extends out from the back of the inner cavity of the shell (1) to the rear of the shell (1);

The lower end of the fusing device (2) is connected with one end of a lower wiring row (3 b), and the other end of the lower wiring row (3 b) extends out from the back of the inner cavity of the shell (1) to the rear of the shell (1).

3. A fused combination switch as defined in claim 1 wherein: the shell (1) comprises a fuse base (1 a) and a fuse upper cover (1 b), wherein the fuse upper cover (1 b) and the fuse base (1 a) are assembled together, and the fuse upper cover (1 b) covers the opening part of the front face of the fuse base (1 a) to form the shell (1).

4. A fused combination switch as defined in claim 2 wherein: the upper end of the fusing device (2) is connected with one end of an upper wiring row (3 a) through a first screw (4 a), and the other end of the upper wiring row (3 a) extends out from the back of an inner cavity of the shell (1) to the rear of the shell (1);

The lower end of the fusing device (2) is connected with one end of a lower wiring row (3 b) through a second screw (4 b), and the other end of the lower wiring row (3 b) extends out from the back of an inner cavity of the shell (1) to the rear of the shell (1).

5. A fused combination switch as defined in claim 1 wherein: the wiring is arranged in a straight line.

6. A fused combination switch as defined in claim 1 wherein: an insulating partition plate is arranged in the inner cavity of the shell (1) and positioned on one side, facing the upper cover (1 b) of the fuse, of the fusing device (2).

7. A fused combination switch as defined in claim 3 wherein: the upper fuse cover (1 b) is locked on the fuse base (1 a) through a screw III (4 c).

8. A fused combination switch as defined in claim 7 wherein: the screw III (4 c) extends into the inner cavity of the shell (1) from the front surface of the upper cover (1 b) of the fuse so as to be locked on the base (1 a) of the fuse.