CN220106400U - Bus structure for drawer type circuit breaker - Google Patents

Abstract

A bus bar structure for a drawer-type circuit breaker, characterized by: the bus is of an integrated structure, and comprises an outer wiring part and an inner bus part, wherein the outer wiring part and the inner bus part are arranged on two sides of the connecting plate. The bus integrates the bus and the external bus into a whole, so that the material cost is saved, the installation difficulty is simplified, the contact area is reduced, the loop resistance and the temperature rise are reduced, and meanwhile, the horizontal or vertical outgoing line can be still maintained.

Description

Bus structure for drawer type circuit breaker

Technical Field

The utility model belongs to the technical field of circuit breakers, and particularly relates to a bus structure for a drawer type circuit breaker.

Background

The circuit breaker is an important part of a power distribution electrical appliance, and is mainly used for an industrial low-voltage power system, and is used for switching on and off current in a power grid circuit, protecting a circuit and power supply equipment from damage caused by faults such as overload, undervoltage, short circuit, single-phase grounding and the like. The circuit breaker is classified into a high voltage circuit breaker and a low voltage circuit breaker according to its range of use. The low-voltage circuit breaker is also called an automatic switch, commonly called an air switch, and also refers to a low-voltage circuit breaker, and is an electric appliance which has the function of manual switching and can automatically perform voltage loss, undervoltage, overload and short-circuit protection. It can be used to distribute electric energy, not frequently start asynchronous motor, protect power supply circuit and motor, when they are in serious overload or short circuit and under-voltage, it can automatically cut off circuit, its function is equivalent to the combination of fuse switch and over-under-heating relay, etc. and after breaking fault current it generally does not need to change parts, so that it has been widely used.

The circuit breaker is various according to its performance requirement structure, and wherein draw-out frame circuit breaker is comparatively popular structure of using of low voltage electricity trade, and it mainly comprises circuit breaker body and drawer seat. Drawer-type circuit breakers are increasingly used, and the bus bars of the drawer-type circuit breakers are key components for realizing the connection of electrical circuits. In the prior art, as shown in fig. 1, a bus is fixed on a chassis of a drawer base, a bus base is installed on the outer side of the bus through 4 screws, two groups of bridge contacts are fixed on a bus branch on the other side of the bus, and the structure has the advantages that the bus base can be horizontally outgoing lines or vertically outgoing lines and can be freely assembled according to requirements.

As shown in fig. 2, in another busbar structure in the prior art, the busbar seat is of a double-row structure, and is split into an upper part and a lower part or a left part and a right part, and is respectively connected and fixed with the busbar through screws.

The conventional bus bar in the prior art has the following two defects:

(1) More copper materials are used for fixing the bus and the bus seat, and screws and washers are also needed for fixing the bus and the bus seat, so that the cost is high.

(2) The bus and the bus seat are fixed through surface-to-surface lamination, so that loop resistance can be increased, and the temperature rise of the circuit breaker is increased.

Disclosure of Invention

The utility model aims at overcoming the defects of the prior bus structure of the drawer-type circuit breaker, and provides the bus structure for the drawer-type circuit breaker, which not only saves the material cost, simplifies the installation difficulty, but also reduces the loop resistance and the temperature rise by integrating the bus and the external bus into a whole.

Technical proposal

In order to achieve the technical purpose, the utility model provides a bus structure for a drawer-type circuit breaker, which is characterized in that: the bus is of an integrated structure, and comprises an outer wiring part and an inner bus part, wherein the outer wiring part and the inner bus part are arranged on two sides of the connecting plate.

In one embodiment, the outer wiring part, the inner confluence part and the connecting plate are formed into a whole by welding at two sides of the connecting plate.

In one embodiment, the inner bus portion includes at least two groups of bus branches, and the bus branches are fixedly connected with the bridge-type contacts to realize bus and electrical connection.

In one embodiment, the outer wire connection part is in a single-row or double-row or multi-row structure.

In one embodiment, the outer connection portion and the inner bus portion are parallel or perpendicular to each other.

Advantageous effects

The utility model provides a bus structure for a drawer-type circuit breaker, which is of an integrated structure. The bus integrates the bus and the external bus into a whole, so that the material cost is saved, the installation difficulty is simplified, the contact area is reduced, the loop resistance and the temperature rise are reduced, and meanwhile, the horizontal or vertical outgoing line can be still maintained.

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 view of a prior art busbar assembly;

FIG. 2 is a schematic view of another prior art busbar assembly;

FIG. 3 is a schematic view of a bus bar assembly according to embodiment 1 of the present utility model;

FIG. 4 is a schematic view showing the structure of a bus bar in embodiment 1 of the present utility model;

FIG. 5 is a schematic view showing the structure of a bus bar in embodiment 2 of the present utility model;

FIG. 6 is a schematic view showing the structure of a bus bar in embodiment 3 of the present utility model;

FIG. 7 is a schematic view showing the structure of a bus bar in embodiment 4 of the present utility model;

Detailed Description

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

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 utility model 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 utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

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

Example 1

In the prior art, more copper materials are used for fixing the bus of the drawer-type circuit breaker, the cost is high, and the bus seat are fixed through surface-to-surface lamination, so that the loop resistance is increased, and the defect of temperature rise of the circuit breaker is accelerated. As shown in fig. 3, the present embodiment provides a busbar structure for a drawer-type circuit breaker, the busbar 1 is an integral structure, the busbar 1 includes an outer wiring portion 1a and an inner bus portion 1b, and the outer wiring portion 1a and the inner bus portion 1b are respectively located on two sides of a connecting plate 1 c. The inner bus part 1b at least comprises two groups of bus branches 1b01, and the bus branches 1b01 are fixedly connected with a plurality of groups of bridge type contacts 2 to realize bus and electric connection. The outer wiring part 1a is in a single-row or double-row or multi-row structure. In this embodiment, as shown in fig. 4, the bus bar 1 is a direct and integral structure. And the outer wiring portion 1a and the inner bus portion 1b are parallel to each other to constitute a horizontal wire outlet form. As shown in fig. 4, each group of busbar branches 1b01 may be fixedly connected to three groups of bridge contacts 2. Although only two sets of bridge contacts 2 are shown for ease of illustration of the bussing branch 1b01, as shown in figure 3, it will be appreciated that each set of bussing branches 1b01 may be fixedly connected to both sets of bridge contacts 2, reducing cost.

Example 2

In this embodiment, as shown in fig. 5, the bus bar 1 is a direct and integral structure. And the outer wiring part 1a and the inner confluence part 1b are mutually perpendicular to form a vertical outgoing line form. Other structures and operation principles are the same as those of embodiment 1.

Example 3

In this embodiment, as shown in fig. 6, the inner bus bar portion 1b and the connecting plate 1c are integrated, and the outer wiring portion 1a and the inner bus bar portion 1b are formed into an integral body on both sides of the connecting plate 1c by welding; and the outer wiring portion 1a and the inner bus portion 1b are parallel to each other to constitute a horizontal wire outlet form. Other structures and operation principles are the same as those of embodiment 1.

Example 4

As shown in fig. 7, in this embodiment, the inner bus bar portion 1b and the connecting plate 1c are integrated, and the outer wiring portion 1a and the inner bus bar portion 1b are formed into an integral body on both sides of the connecting plate 1c by welding; and the outer wiring part 1a and the inner confluence part 1b are mutually perpendicular to form a vertical outgoing line form. Other structures and operation principles are the same as those of embodiment 1.

In the embodiment of the utility model, the bus bar and the external bus bar are integrated into one part, so that the copper consumption can be reduced; after the bus is integrated into a whole, screws and washers for fixing can be simplified, assembly time can be saved, contact area is reduced, loop resistance and temperature rise are reduced, and the integrated bus can still be a horizontal outgoing line or a vertical outgoing line, so that the applicable scene is ensured.

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 utility model and are described in detail herein without thereby 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. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (5)

1. A bus bar structure for a drawer-type circuit breaker, characterized by: the bus bar (1) is of an integrated structure, the bus bar (1) comprises an outer wiring part (1 a) and an inner bus part (1 b), and the outer wiring part (1 a) and the inner bus part (1 b) are respectively arranged at two sides of the connecting plate (1 c).

2. The bus bar structure for a drawer-type circuit breaker of claim 1, wherein: the outer wiring part (1 a) and the inner converging part (1 b) are welded on two sides of the connecting plate (1 c) to form a whole.

3. The bus bar structure for a drawer-type circuit breaker of claim 1, wherein: the inner bus part (1 b) at least comprises two groups of bus branches (1 b 01), and the bus branches (1 b 01) are fixedly connected with the plurality of groups of bridge type contacts (2) to realize bus and electric connection.

4. The bus bar structure for a drawer-type circuit breaker of claim 1, wherein: the outer wiring part (1 a) is of a single-row or double-row or multi-row structure.

5. The bus bar structure for a drawer-type circuit breaker of claim 1, wherein: the outer connection part (1 a) and the inner confluence part (1 b) are parallel or perpendicular to each other.