Molded case circuit breaker base

Abstract

The utility model discloses a molded case circuit breaker base, which mainly comprises a circuit breaker and a base mechanism, the upper side and the lower side of the circuit breaker are fixedly connected with connecting plates, and the circuit breaker is connected with the base mechanism. The base mechanism comprises a shell clamped with the rear side of the circuit breaker, a fixing plate fixedly connected with the rear side of the shell, a supporting plate fixedly connected with the rear side of the fixing plate, a mounting plate fixedly connected with the rear end of the supporting plate, a connecting assembly used for connecting the supporting plate and a connecting plate together, and a limiting rod used for limiting the connecting assembly. The limiting rod is connected with the fixing plate, and the connecting plate is movably connected with the fixing plate. According to the utility model, the circuit breaker can be quickly mounted and dismounted, the mounting and dismounting efficiency is high, and the circuit breaker can be conveniently maintained or replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to a molded case circuit breaker base. Background Art

[0002] Circuit breakers are the main switching devices in low-voltage power supply and distribution systems. They can connect, carry and disconnect normal operating currents, as well as disconnect overcurrents and short-circuit fault currents. They can perform multiple protection functions, such as overload, short circuit, undervoltage, grounding and leakage.

[0003] In the prior art, the circuit breaker needs to be installed on the mounting surface when in use. When the circuit breaker is damaged, the circuit breaker needs to be removed from the mounting surface and replaced. However, most of the existing circuit breakers are fixed and installed by screws. When the circuit breaker needs to be removed for maintenance or replacement, the fixing screws need to be unscrewed one by one, which affects the installation and removal efficiency of the circuit breaker. Therefore, a molded case circuit breaker base is urgently needed to solve the above technical problems. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the above problems existing in the existing circuit breakers, the present utility model is proposed.

[0006] Therefore, the technical problem to be solved by the utility model is to provide a molded case circuit breaker base, the purpose of which is to solve the problem that the fixing screws of the existing circuit breaker need to be unscrewed one by one after being damaged, which affects the installation and disassembly efficiency of the circuit breaker.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a molded case circuit breaker base, which mainly includes a circuit breaker and a base mechanism, wherein the upper and lower sides of the circuit breaker are fixedly connected with connecting plates, and the circuit breaker is connected to the base mechanism, and the base mechanism includes a shell engaged with the rear side of the circuit breaker, a fixing plate fixedly connected to the rear side of the shell, a support plate fixedly connected to the rear side of the fixing plate, a mounting plate fixedly connected to the rear end of the support plate, a connecting assembly for connecting the support plate and the connecting plate together, and a limiting rod for limiting the connecting assembly, wherein the limiting rod is connected to the fixing plate, and the connecting plate is movably connected to the fixing plate.

[0008] As a preferred solution of the molded case circuit breaker base of the utility model, the connecting plate is an inverted "L"-shaped structure.

[0009] As a preferred solution of the molded case circuit breaker base of the utility model, wherein: the number of the support plates is consistent with that of the connecting plates, and the support plates correspond to the connecting plates one by one.

[0010] As a preferred solution of the molded case circuit breaker base of the utility model, wherein: the number of the connecting components is consistent with that of the supporting plates, the connecting component includes a movable plate movably arranged between the fixed plate and the mounting plate, a plug rod is fixedly connected to the movable plate, the plug rod movably penetrates the supporting plate and the connecting plate, a telescopic spring is connected between the movable plate and the fixed plate, and the telescopic spring is movably sleeved on the outside of the plug rod.

[0011] As a preferred solution of the molded case circuit breaker base of the utility model, wherein: the number of the limit rods is consistent with the number of the connecting plates, the limit rods are movably connected to the through slots provided on the fixed plate, and the through slots are located on the side of the movable plate away from the connecting plate.

[0012] As a preferred solution of the molded case circuit breaker base of the utility model, wherein: the corresponding positions of the mounting plate and the limiting rod are both provided with engaging grooves, and the engaging grooves are engaged with the limiting rod.

[0013] As a preferred solution of the molded case circuit breaker base of the utility model, wherein: an end of the limit rod away from the mounting plate is fixedly connected with an anti-slip protrusion.

[0014] Beneficial effects of the utility model:

[0015] When the utility model is used, when installing the circuit breaker, the rear end of the circuit breaker can be engaged in the shell through the cooperation of the connecting plate, the shell, the fixing plate, etc., so as to realize the preliminary installation of the circuit breaker. Afterwards, the inserting rod can be engaged with the connecting plate through the cooperation of the supporting plate, the inserting rod, the telescopic spring movable plate, etc., so as to limit the connecting plate so that it is not easy to move, and then the circuit breaker is not easy to fall out of the shell. The mounting plate is fixedly connected to the mounting surface by screws, and the screws do not need to be removed when the circuit breaker is assembled and disassembled. The operation is simple, the circuit breaker can be quickly installed and disassembled, the installation and disassembly efficiency is high, and the circuit breaker is convenient to repair or replace. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0017] Figure 1This is a first-view structural diagram of the molded case circuit breaker base of the utility model.

[0018] Figure 2 This is a schematic structural diagram of the molded case circuit breaker base from a second viewing angle of the present invention.

[0019] Figure 3 It is a structural schematic diagram of the base mechanism of the molded case circuit breaker base of the utility model.

[0020] Figure 4 It is a rear structural schematic diagram of the fixing plate of the base of the molded case circuit breaker of the present invention.

[0021] Figure 5 The figure is a schematic diagram of the structure of the fixing plate of the base of the molded case circuit breaker of the present invention.

[0022] Figure 6 It is a structural schematic diagram of the mounting plate of the molded case circuit breaker base of the utility model.

[0023] Figure 7 The utility model is a schematic diagram of the connection structure of the connection assembly and the support plate of the molded case circuit breaker base.

[0024] Figure 8 It is a structural schematic diagram of the limit rod of the base of the molded case circuit breaker of the utility model.

[0025] Fig. 9 The schematic diagram is a structural diagram of the molded case circuit breaker base of the utility model when the circuit breaker is disassembled.

[0026] In the figure: 100, circuit breaker; 101, connecting plate; 200, base mechanism; 201, housing; 202, fixing plate; 203, supporting plate; 204, mounting plate; 205, connecting assembly; 2051, movable plate; 2052, plug rod; 2053, telescopic spring; 206, limiting rod; 207, through groove; 208, engaging groove; 209, anti-slip bump. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0030] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included. Example 1

[0031] Reference Figure 1-8 The utility model provides a molded case circuit breaker base, which mainly includes:

[0032] Circuit breaker 100, such as Figure 1 The circuit breaker 100 is connected to the base mechanism 200. The upper and lower sides of the circuit breaker 100 are fixedly connected with connecting plates 101. The connecting plates 101 are in an inverted "L"-shaped structure. There are two pairs of connecting plates 101. The two pairs of connecting plates 101 are symmetrically arranged on the upper and lower sides of the circuit breaker 100.

[0033] Base mechanism 200, such as Figure 2-4 The base mechanism 200 includes a housing 201 engaged with the rear side of the circuit breaker 100, a fixing plate 202 fixedly connected to the rear side of the housing 201, a support plate 203 fixedly connected to the rear side of the fixing plate 202, a mounting plate 204 fixedly connected to the rear end of the support plate 203, a connecting assembly 205 for connecting the support plate 203 with the connecting plate 101, and a limiting rod 206 for limiting the connecting assembly 205. An insertion groove is provided at a position corresponding to the horizontal plate of the connecting plate 101 on the fixing plate 202, and the insertion groove is adapted to the horizontal plate of the connecting plate 101. When installing the circuit breaker 100, the mounting plate 204 is fixedly installed to the mounting surface by a plurality of screws. After that, the rear end of the circuit breaker 100 is engaged in the housing 201, and the horizontal plate of the connecting plate 101 is inserted into the space between the fixing plate 202 and the mounting plate 204 through the insertion groove, so that the circuit breaker 100 can be preliminarily installed;

[0034] like Figure 7, the number of connecting components 205 is consistent with that of the supporting plate 203, and the connecting component 205 includes a movable plate 2051 movably arranged between the fixed plate 202 and the mounting plate 204, and a plug rod 2052 is fixedly connected to the movable plate 2051, and the plug rod 2052 slides through the supporting plate 203 and the connecting plate 101, and a telescopic spring 2053 is connected between the movable plate 2051 and the fixed plate 202, and the telescopic spring 2053 is movably sleeved on the outside of the plug rod 2052. After the circuit breaker 100 is engaged in the housing 201, the plug rod 2052 is engaged with the supporting plate 203 and the connecting plate 101, so that the connecting plate 101 can be limited to prevent it from moving, thereby preventing the circuit breaker 100 from falling out of the housing 201, thereby improving the stability of the circuit breaker 100, and the operation is simple. When disassembling and assembling the circuit breaker 100, there is no need to remove the screws one by one, the disassembly and assembly efficiency is fast, and the circuit breaker 100 is convenient to replace;

[0035] like Figure 3-7 The number of limit rods 206 is consistent with that of the connecting plate 101, and the limit rods 206 are movably connected to the through slots 207 opened on the fixed plate 202, and the through slots 207 are located on the side of the movable plate 2051 away from the connecting plate 101. When the circuit breaker 100 needs to be disassembled, the plug rod 2052 is driven to separate from the connecting plate 101 through the movable plate 2051, and then the limit rod 206 is pushed to abut against the side of the movable plate 2051 toward the support plate 203, so as to prevent the movable plate 2051 from driving the plug rod 2052 to move under the elastic force of the telescopic spring 2053, and it is not easy to hinder the movement of the connecting plate 101, so that the circuit breaker 100 can be quickly pulled out of the shell 201.

[0036] In this embodiment, if Figure 3 The number of the support plates 203 is the same as that of the connecting plates 101 , and the support plates 203 correspond to the connecting plates 101 one by one. A connecting component 205 is provided on each support plate 203 , and the connecting plate 101 can be limited by the connecting component 205 .

[0037] In this embodiment, a snap-fit ​​groove 208 is provided at the corresponding positions of the mounting plate 204 and the limiting rod 206 , and the snap-fit ​​groove 208 is engaged with the limiting rod 206 to improve the stability of the limiting rod 206 so that it is not easy to move when limiting the movable plate 2051 .

[0038] In this embodiment, if Figure 7 An anti-skid protrusion 209 is fixedly connected to one end of the limiting rod 206 away from the mounting plate 204. The purpose of this arrangement is to facilitate the movement of the limiting rod 206.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A molded case circuit breaker base, characterized in that: include: A circuit breaker (100), wherein the upper and lower sides of the circuit breaker (100) are both fixedly connected with connection plates (101); A base mechanism (200), the circuit breaker (100) being connected to the base mechanism (200), the base mechanism (200) comprising a housing (201) engaged with the rear side of the circuit breaker (100), a fixing plate (202) fixedly connected to the rear side of the housing (201), a support plate (203) fixedly connected to the rear side of the fixing plate (202), a mounting plate (204) fixedly connected to the rear end of the support plate (203), a connecting assembly (205) for connecting the supporting plate (203) and the connecting plate (101), and a limiting rod (206) for limiting the position of the connecting assembly (205), the limiting rod (206) being connected to the fixing plate (202), and the connecting plate (101) being movably connected to the fixing plate (202); The number of the connecting components (205) is the same as that of the supporting plates (203), and the connecting components (205) include a movable plate (2051) movably arranged between the fixed plate (202) and the mounting plate (204), an insertion rod (2052) being fixedly connected to the movable plate (2051), the insertion rod (2052) slidingly passing through the supporting plate (203) and the connecting plate (101), a telescopic spring (2053) being connected between the movable plate (2051) and the fixed plate (202), and the telescopic spring (2053) being movably sleeved on the outside of the insertion rod (2052).

2. The molded case circuit breaker base according to claim 1, characterized in that: The connecting plate (101) is in an inverted "L"-shaped structure.

3. The molded case circuit breaker base according to claim 1, characterized in that: The number of the support plates (203) and the connection plates (101) is the same, and the support plates (203) and the connection plates (101) correspond one to one.

4. The molded case circuit breaker base according to claim 1, characterized in that: The number of the limiting rods (206) is the same as that of the connecting plates (101); the limiting rods (206) are movably connected to a through slot (207) provided on the fixed plate (202); and the through slot (207) is located on a side of the movable plate (2051) away from the connecting plate (101).

5. The molded case circuit breaker base according to claim 1, characterized in that: The mounting plate (204) and the limiting rod (206) are both provided with engaging grooves (208) at corresponding locations, and the engaging grooves (208) are engaged with the limiting rod (206).

6. The molded case circuit breaker base according to claim 1, characterized in that: An end of the limiting rod (206) away from the mounting plate (204) is fixedly connected with an anti-slip protrusion (209).

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