Circuit breaker and isolating switch

Abstract

The utility model discloses a circuit breaker, which is characterized in that a wire inlet plate and a wire outlet plate are directly welded with a wiring plate in a circuit breaker shell, and one end of the wire inlet plate and one end of the wire outlet plate extend out of the shell of the circuit breaker to be conveniently connected with other components without locking wires through screws in the shell of the circuit breaker. And the wire inlet plate and the wire outlet plate are conveniently connected to other parts, so that the wiring efficiency is improved. The utility model further discloses an isolating switch, the wiring board provided with the static contact is welded on the wire outlet plate to replace a conventional wiring frame and wiring screws, a wire does not need to be externally connected in the isolating switch in a screw locking mode, and the wire outlet plate extends out of the shell and is conveniently connected with other components to improve the wiring efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of electric appliance switch, concretely relates to circuit breaker and disconnecting switch. BACKGROUND

[0002] The electrical switch, such as circuit breaker and disconnecting switch, is internally provided with a wiring frame and a wiring screw for external wiring, and this wiring mode is low in efficiency, and with the miniaturization of products, the operation space is small, and wiring is difficult.

[0003] The circuit breaker usually comprises a contact system, an arc extinguishing system, an operating mechanism, a release, a housing and the like. The existing small circuit breaker, with reference to the small circuit breaker disclosed in patents CN211555805U and CN214505414U, is provided with one wiring frame at each length end in the housing interior for external wiring, and the wiring is locked in the wiring frame by a locking screw mode. The external wiring is inserted into the wiring frame, and the wiring frame and the wiring plate are clamped to the wiring in the wiring frame by rotating the screw with a cross screwdriver, so that the wiring efficiency is low, and when the size of the small circuit breaker is small, the wiring space is small, so that the wiring becomes difficult.

[0004] Similarly, the existing disconnecting switch, with reference to the disconnecting switch disclosed in patents CN204558338U and CN203351439U, is provided with a static contact on the wiring plate, and the disconnecting switch is internally provided with a wiring frame and a wiring screw for external wiring of the wiring plate provided with the static contact, and the wiring plate provided with the static contact is inserted into the wiring frame, and the wiring is locked in the wiring frame in contact with the wiring plate by a locking screw mode, so that the wiring efficiency is low, and when the size of the disconnecting switch is small, the wiring operation space is small, and the wiring is difficult. SUMMARY

[0005] In view of the deficiencies of the prior art, the utility model provides a circuit breaker, which mainly solves the problems of low wiring efficiency, large space occupied by the wiring frame and being not conducive to miniaturization of the existing circuit breaker. To achieve the above object, the utility model is realized by the following technical scheme:

[0006] A circuit breaker comprises a housing, and the housing is internally provided with an operating mechanism, an electromagnetic release mechanism, an arc extinguishing mechanism, a thermal release mechanism, a moving contact, a static contact and two wiring plates, the two wiring plates are electrically connected with the moving contact and the static contact respectively, the wiring plate electrically connected with the static contact is defined as a first wiring plate, the wiring plate electrically connected with the moving contact is defined as a second wiring plate, the circuit breaker further comprises an incoming line plate and an outgoing line plate, the incoming line plate and the outgoing line plate have electrical conductivity, the incoming line plate is inserted into the housing and welded with the first wiring plate, the other end of the incoming line plate extends out of the housing, one end of the outgoing line plate is inserted into the housing and welded with the second wiring plate, and the other end of the outgoing line plate extends out of the housing.

[0007] Further, the incoming line plate and the outgoing line plate are both made of copper material.

[0008] Further, the incoming line plate is provided with a fixing hole at a position outside the shell, and the outgoing line plate is provided with a fixing hole at a position outside the shell, and the fixing hole is a threaded hole.

[0009] Further, the incoming line plate and the outgoing line plate are both provided with a horizontal section at a position outside the shell, and the fixing hole is arranged on the horizontal section outside the shell.

[0010] The circuit breaker provided by the utility model has the following beneficial effects:

[0011] The incoming line plate and the outgoing line plate are used to replace the wiring frame and the wiring screw, the incoming line plate and the outgoing line plate are positioned by welding, the wiring efficiency is improved by conveniently connecting the incoming line plate and the outgoing line plate to other components, and the incoming line plate and the outgoing line plate can be designed into different structures according to requirements, thereby improving the space utilization.

[0012] The embodiment also provides an isolating switch, and solves the problems of low wiring efficiency of the incoming line plate of the static contact of the existing isolating switch and large space occupied by the wiring frame. The specific technical scheme is as follows:

[0013] An isolating switch comprises a shell, an operating mechanism, a moving contact system and a static contact system are arranged in the shell, the static contact system comprises an incoming line plate and a static contact arranged on the incoming line plate, and the isolating switch further comprises an outgoing line plate, the outgoing line plate has conductivity, one end of the outgoing line plate is inserted into the shell and is welded to the incoming line plate, and the other end of the outgoing line plate extends out of the shell.

[0014] Further, the outgoing line plate is made of copper.

[0015] Further, the outgoing line plate is provided with a fixing hole at a position outside the shell, and the fixing hole is a threaded hole.

[0016] Further, the outgoing line plate is provided with a horizontal section at a position outside the shell, and the fixing hole is arranged on the horizontal section of the outgoing line plate outside the shell.

[0017] The isolating switch provided by the utility model has the following beneficial effects:

[0018] The outgoing line plate of the isolating switch is directly welded to the incoming line plate on which the static contact is arranged, the outgoing line plate does not need to be externally connected to a wire by screw locking in the isolating switch, the part of the outgoing line plate extending out of the shell is used for conveniently connecting the outgoing line plate to other components, and the wiring efficiency is improved. Since the outgoing line plate is used to replace the wiring frame and the wiring screw, the outgoing line plate occupies a small space in the shell, and the isolating switch is miniaturized. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structure schematic view of the circuit breaker of the utility model embodiment one without a front cover.

[0020] Figure 2 is Figure 1 the front cover installed circuit breaker top view;

[0021] Figure 3 is Figure 1 the front cover installed circuit breaker left view;

[0022] Figure 4 is Figure 1 the front cover installed circuit breaker left view;

[0023] Figure 5 is the structure diagram of the disconnector of example two without the front cover;

[0024] Figure 6 is Figure 5 the front cover installed disconnector top view;

[0025] Figure 7 is Figure 5 the front cover installed disconnector left view. DETAILED DESCRIPTION

[0026] The utility model will be further described below in combination with the drawings and examples.

[0027] In the description of the utility model, it is understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "horizontal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0028] Example One

[0029] As Figures 1 to 4 a kind of circuit breaker, including shell, shell includes front cover 1 and rear seat 2, the front cover 1 is connected with rear seat 2 and encloses inner cavity, operating mechanism 3, electromagnetic tripping mechanism 4, arc extinguishing mechanism 6, thermal release mechanism, moving contact, static contact and two terminal blocks are installed in the inner cavity of shell, two terminal blocks are electrically connected with moving contact and static contact respectively, and the terminal block electrically connected with static contact is defined as first terminal block 8, and the terminal block electrically connected with moving contact is defined as second terminal block 9, further include incoming line plate 10 and outgoing line plate 11, incoming line plate 10 and outgoing line plate 11 have conductivity (manufactured with copper, aluminum and other metals or alloys), incoming line plate 10 is inserted into shell and is welded with first terminal block 8, another end of incoming line plate 10 extends outside shell, one end of outgoing line plate 11 is inserted into shell and is welded with second terminal block 9, another end of outgoing line plate 11 extends outside shell.

[0030] Since the incoming line plate 10 and the outgoing line plate 11 both have a part extending outside the shell, the incoming line plate 10 and the outgoing line plate 11 can be conveniently connected with other components outside the shell, for example, the incoming line plate 10 and the outgoing line plate 11 are inserted on other components, or the incoming line plate 10 and the outgoing line plate 11 are welded on other components. In the embodiment, preferably, the part of the incoming line plate 10 extending outside the shell is provided with a fixing hole 5, and the part of the outgoing line plate 11 extending outside the shell is provided with a fixing hole 5, the fixing hole 5 is a threaded hole, and the incoming line plate 10 and the outgoing line plate 11 can be conveniently connected with other components by cooperating the fixing hole 5 with a screw.

[0031] The circuit breaker does not need to lock the wires inside the shell of the circuit breaker with screws, but improves the wiring efficiency by conveniently connecting the incoming line plate 10 and the outgoing line plate 11 with other components. Since the two wiring frames and the two wiring screws inside the shell of the circuit breaker are removed, the installation space of the two wiring frames and the two wiring screws inside the shell is saved, which is beneficial to miniaturization of the circuit breaker, and more space is saved for installation of other parts inside the shell.

[0032] The incoming line plate 10 and the outgoing line plate 11 are both copper bars, which are made of copper material and are preferably integrally formed. The incoming line plate 10 of the embodiment is formed by bending into a first horizontal section, a first vertical section and a second horizontal section, the first horizontal section is welded with the first wiring plate 8, one end of the first horizontal section extends outside the shell and is connected with the second vertical section, the first vertical section is located at one side in the width direction of the shell, the end of the first vertical section away from the operating mechanism 3 is connected with the second horizontal section, the second horizontal section is located at a lower level than the bottom surface of the shell, and the second horizontal section is provided with a fixing hole 5. The outgoing line plate 11 of the embodiment is provided with at least two horizontal sections, one of which is welded with the second wiring plate 9, and at least one of which is located outside the shell and provided with a fixing hole 5. The shape and size of the incoming line plate 10 and the outgoing line plate 11 (including the size and position of the fixing hole 5) can be designed according to the installation space of the customer, and are not limited to the structure described above, so as to improve the space utilization and fully ensure the feasibility of installation. A press-in nut can be provided on the incoming line plate and the outgoing line plate instead of the fixing hole.

[0033] The operating mechanism 3, the electromagnetic tripping mechanism 4, the arc extinguishing mechanism 6, the thermal tripping mechanism, the movable contact, the static contact and the two terminal blocks are all common components of the circuit breaker. The circuit breaker described in the embodiment is based on the structure of the conventional circuit breaker, and uses the incoming terminal block 10 and the outgoing terminal block 11 to replace the two terminal blocks and the two terminal screws inside the shell. The components not introduced inside the circuit breaker and the use principle can be referred to the prior art. The circuit breaker is portable according to the two fixing holes 5, reduces the two terminal blocks and the two terminal screws, improves the installation efficiency of the terminal, and is also beneficial to miniaturization. The incoming terminal block 10 is welded to the first terminal block 8 connected to one end of the coil of the electromagnetic tripping mechanism 4, and the outgoing terminal block 11 is welded to the second terminal block 9 connected to the bimetallic strip 7, without changing the internal design of the existing circuit breaker, thereby saving cost.

[0034] Embodiment two

[0035] As Figures 5 to 7 A disconnector includes a shell, an operating mechanism 13, a movable contact system and a static contact system are installed inside the shell, the static contact system includes a terminal block 14 and a static contact 15 installed on the terminal block 14, and an outgoing terminal block 16 is provided, the outgoing terminal block 16 has electrical conductivity (made of copper, aluminum or other metals or alloys), one end of the outgoing terminal block 16 is inserted into the shell and welded to the terminal block 14, and the other end of the outgoing terminal block 16 extends outside the shell. The shell includes a front cover and a rear seat, and the front cover is connected to the rear seat and surrounds an inner cavity for installing the operating mechanism 13, the movable contact system and the static contact system.

[0036] Since the outgoing terminal block 16 has a part extending outside the shell, the outgoing terminal block 16 can be conveniently connected with other components outside the shell, for example, the outgoing terminal block 16 is inserted into other components, or the outgoing terminal block 16 is welded to other components. In the embodiment, preferably, the outgoing terminal block 16 is provided with a fixing hole 12 at the part outside the shell, the outgoing terminal block 11 is provided with a fixing hole 12 at the part outside the shell, the fixing hole 12 is a threaded hole, and the outgoing terminal block 16 can be conveniently connected with other components by cooperating the fixing hole 12 with a screw. A press-in nut can be provided on the incoming terminal block instead of the fixing hole.

[0037] The disconnector uses the outgoing terminal block 16 to replace the terminal block and the terminal screw, the outgoing terminal block 16 is directly welded to the terminal block 14 on which the static contact 15 is installed, and the outgoing terminal block 16 extends outside the shell and is conveniently connected with other components to improve the terminal efficiency. Since the outgoing terminal block 16 is used to replace the terminal block and the terminal screw, the outgoing terminal block 16 occupies a small space inside the shell, which is beneficial to miniaturization of the disconnector.

[0038] The outgoing line plate 16 is made of copper and is preferably integrally formed. The outgoing line plate 16 of the embodiment has at least two horizontal sections, one of which is welded to the second connecting plate 149, and at least one of which is located outside the housing and has the fixing hole 12 formed thereon. The shape and size of the outgoing line plate 16 (including the size and position of the fixing hole 12) can be designed according to the installation space of the customer, and are not limited to the structure described above, thereby fully improving the space utilization and ensuring the feasibility of installation.

[0039] The operating mechanism 13, the movable contact system and the stationary contact system are common components of the disconnector, and the disconnector described in the embodiment is based on the structure of the conventional disconnector, and the outgoing line plate 16 is used to replace the connecting frame and the connecting screw for supplying power to the stationary contact 15. The structure and principle of the operating mechanism 13, the movable contact system and the stationary contact system inside the disconnector are not described again, and the prior art can be referred to.

[0040] The structure and principle of the movable contact system and the stationary contact system are not described again, and the prior art can be referred to.

[0041] The above description is only used to illustrate the technical solutions of the present application, but not to limit the same. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features thereof can be replaced by equivalents. These modifications or replacements do not cause the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and therefore all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

Claims

1. A circuit breaker, comprising a housing, wherein an operating mechanism, an electromagnetic tripping mechanism, an arc-extinguishing mechanism, a thermal tripping mechanism, a moving contact, a stationary contact, and two terminal blocks are installed inside the housing, the two terminal blocks being electrically connected to the moving contact and the stationary contact respectively, the terminal block electrically connected to the stationary contact being defined as the first terminal block, and the terminal block electrically connected to the moving contact being defined as the second terminal block, characterized in that: It also includes an inlet plate and an outlet plate, which are conductive. The inlet plate is inserted into the housing and welded to the first terminal block, with the other end of the inlet plate extending out of the housing. One end of the outlet plate is inserted into the housing and welded to the second terminal block, with the other end of the outlet plate extending out of the housing.

2. The circuit breaker according to claim 1, characterized in that: Both the inlet board and the outlet board are made of copper.

3. The circuit breaker according to claim 1, characterized in that: The inlet plate has a fixing hole on the part of the housing that is located outside the housing, and the outlet plate has a fixing hole on the part of the housing that is located outside the housing. The fixing holes are threaded holes.

4. The circuit breaker according to claim 3, characterized in that: Both the inlet and outlet plates have horizontal sections located outside the housing, and the fixing holes are located on the horizontal sections outside the housing.

5. A disconnecting switch, comprising a housing, wherein an operating mechanism, a moving contact system, and a stationary contact system are installed inside the housing, the stationary contact system comprising a terminal block and stationary contacts mounted on the terminal block, characterized in that: It also includes a cable outlet plate, which is conductive. One end of the cable outlet plate is inserted into the housing and welded to the terminal block, while the other end of the cable outlet plate extends out of the housing.

6. The disconnecting switch according to claim 5, characterized in that: The outgoing plate is made of copper.

7. The disconnecting switch according to claim 5, characterized in that: The cable outlet plate has a fixing hole on the part located outside the housing. The fixing hole is a threaded hole.

8. The disconnecting switch according to claim 7, characterized in that: The cable outlet plate has a horizontal section located outside the housing, and the fixing hole is located on the horizontal section of the cable outlet plate located outside the housing.

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