A molded case circuit breaker mounting base

By designing a plug-in linkage structure for the molded case circuit breaker mounting base, the problem of difficult installation of traditional circuit breakers is solved, achieving convenient installation and stable disassembly, and is applicable to different models of circuit breakers.

CN224472418UActive Publication Date: 2026-07-07YUEQING LIANYU ELECTRIC CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
YUEQING LIANYU ELECTRIC CO LTD
Filing Date
2025-06-03
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

The installation process of traditional molded case circuit breakers is relatively troublesome, especially for circuit breakers of different models and sizes. They are also prone to getting caught on the base plate during disassembly, causing inconvenience.

Method used

A mounting base for a molded case circuit breaker was designed. The first and second insert plates are linked by a spring. Combined with a linkage component and a sliding rod structure, the insert plates can move in opposite directions. The spring and nut are used to lock the plates and ensure stable installation.

Benefits of technology

It facilitates the installation and disassembly of different types of circuit breakers, ensures installation stability, solves the problem of difficult installation of traditional circuit breakers, and has a novel structure that is easy to operate.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224472418U_ABST
    Figure CN224472418U_ABST
Patent Text Reader

Abstract

The utility model discloses a kind of molded case circuit breaker mounting seat, including bottom plate, the lower side of bottom plate is equipped with first plugboard, and the upper end of bottom plate is equipped with second plugboard;The upper side and the lower side of bottom plate are equipped with support part, support part is also equipped with sliding slot, and the first plugboard and the second plugboard are guided to slide by the sliding slot;The first plugboard and the second plugboard are moved away by the spring;The side of the first plugboard and the second plugboard is also equipped with linkage, and the first plugboard and the second plugboard are moved towards by linkage. Since the first plugboard and the second plugboard can be moved away under the action of spring, can be moved towards under the action of linkage, so that the equipment can use different size circuit breaker first;Second, pulling linkage can completely release circuit breaker;Third, after installation, spring can be used to promote two plugboards to be inserted into the slot of circuit breaker, to ensure the stability after circuit breaker installation.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of electrical switch technology, specifically to a mounting base for a molded case circuit breaker. Background Technology

[0002] Molded case circuit breakers (MCCBs) are widely used in electrical equipment due to their excellent performance. Traditional electronic MCCBs are primarily installed in electrical cabinets or boxes. However, the varying models and sizes of electronic MCCBs make installation cumbersome and difficult. Therefore, we propose a mounting bracket for MCCBs. Utility Model Content

[0003] The purpose of this utility model is to provide a mounting base for a molded case circuit breaker to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a molded case circuit breaker mounting base, comprising a base plate, a first insert plate on the lower side of the base plate, and a second insert plate on the upper end of the base plate; both the upper and lower sides of the base plate are provided with support portions, and the support portions are also provided with sliding grooves, which guide the first insert plate and the second insert plate to slide; a spring is also provided between the first insert plate and the second insert plate, which causes the first insert plate and the second insert plate to move in opposite directions; a linkage member is also provided on one side of the first insert plate and the second insert plate, which causes the first insert plate and the second insert plate to move towards each other.

[0005] As a preferred technical solution of this utility model: the linkage includes a crank arm, which slides in a guide groove provided on the base plate via a sliding rod.

[0006] As a preferred technical solution of this utility model: one end of the crank arm is connected to the second insert plate through a first connecting arm, and the other end of the crank arm is connected to the first insert plate through a second connecting part.

[0007] As a preferred technical solution of this utility model: the crank arm is also provided with a socket, and the sliding rod is adapted to the socket through a provided pin; wherein, the cross-section of the socket is rectangular.

[0008] As a preferred technical solution of this utility model: one end of the sliding rod passes through the guide groove and is threadedly engaged with the provided nut.

[0009] The beneficial effects of this utility model using the above technical solution are as follows: Firstly, because the first and second insert plates can move in opposite directions under the action of the spring and in opposite directions under the action of the linkage, the device can accommodate circuit breakers of different sizes. Secondly, pulling the linkage can completely release the circuit breaker, solving the problem of the circuit breaker being hooked on the base plate and causing inconvenience in disassembly. Thirdly, after installation, the spring can ensure that both insert plates are always inserted into the circuit breaker slots, thus guaranteeing the stability of the circuit breaker after installation. Therefore, this device facilitates the installation and disassembly of circuit breakers while also allowing the use of different models of circuit breakers. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0011] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle;

[0012] Figure 3 This is an exploded structural diagram of the linkage component of this utility model;

[0013] Figure 4 This is a schematic diagram showing the state of the circuit breaker after installation with the base plate.

[0014] In the diagram: 1. Base plate; 2. Guide groove; 3. Linkage component; 30. Crank arm; 31. First connecting arm; 32. Second connecting part; 33. Insertion hole; 34. Nut; 35. Pin; 36. Sliding rod; 4. Spring; 5. First insert plate; 6. Second insert plate; 7. Support part; 8. Slide groove. Detailed Implementation

[0015] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "upper surface," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this utility model.

[0016] Please see Figure 1-4This utility model provides an embodiment of a molded case circuit breaker mounting base, comprising a base plate 1, a first insert plate 5 on the lower side of the base plate 1, and a second insert plate 6 on the upper end of the base plate 1; both the upper and lower sides of the base plate 1 are provided with support portions 7, and the support portions 7 are also provided with sliding grooves 8, which guide the first insert plate 5 and the second insert plate 6 to slide; a spring 4 is also provided between the first insert plate 5 and the second insert plate 6, which causes the first insert plate 5 and the second insert plate 6 to move in opposite directions; a linkage member 3 is also provided on one side of the first insert plate 5 and the second insert plate 6, which causes the first insert plate 5 and the second insert plate 6 to move towards each other.

[0017] In summary, because the first insertion plate 5 and the second insertion plate 6 can move in opposite directions under the action of the spring 4 and in opposite directions under the action of the linkage 3, this device allows for the following advantages: firstly, it can use circuit breakers of different sizes; secondly, pulling the linkage 3 can completely release the circuit breaker, solving the problem of the circuit breaker being hooked on the base plate and causing inconvenience in disassembly; and thirdly, after installation, the spring 4 can ensure that both insertion plates are always inserted into the circuit breaker slots, thus guaranteeing the stability of the circuit breaker after installation. Based on this, the device facilitates the installation and disassembly of circuit breakers while also allowing the use of different models of circuit breakers. Furthermore, the device has a novel structure, requiring only the pushing of the linkage to complete the disassembly of the circuit breaker.

[0018] Furthermore, the linkage 3 includes a crank arm 30, which slides within a guide groove 2 on the base plate 1 via a sliding rod 36. Therefore, by guiding the sliding rod 36 through the guide groove 2, the sliding rod 36 can only slide in a specific direction, facilitating the linkage 3 to complete the opposing movement of the first insert plate 5 and the second insert plate 6.

[0019] Furthermore, the crank arm 30 is also provided with a socket 33, and the sliding rod 36 is adapted to be connected to the socket 33 via a pin 35; wherein, the cross-section of both the socket 33 and the pin 35 is rectangular. Based on this, while the sliding rod 36 slides directionally within the guide groove 2, the rectangular cross-section of the pin 35 and the rectangular cross-section of the socket 33 cooperate, which can prevent the crank arm 30 from rotating along the central axis of the sliding rod 36, thus further ensuring the directional sliding of the sliding rod 36.

[0020] Specifically, one end of the crank arm 30 is connected to the second insert plate 6 via a first connecting arm 31, and the other end of the crank arm 30 is connected to the first insert plate 5 via a second connecting part 32. The two connecting arms are connected to the crank arm 30 in the same way: a pin passes through the first connecting arm 31 and the second insert plate 6 to connect them via a pin; simultaneously, a pin passes through the other end of the first connecting arm 31 to connect the other side of the first connecting arm 31 to the crank arm 30 via a pin.

[0021] In addition, since one end of the sliding rod 36 passes through the guide groove 2 and is threaded into the nut 34, after the circuit breaker is installed, tightening the nut 34 can lock the sliding rod 36 onto the base plate 1. At this time, the circuit breaker can be reliably installed on the base plate 1, avoiding the phenomenon of the circuit breaker separating from the two plug plates due to accidental contact.

[0022] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A mounting base for a molded case circuit breaker, characterized in that: Includes a base plate (1), the lower side of which is provided with a first insert plate (5), and the upper end of which is provided with a second insert plate (6). The base plate (1) is provided with support parts (7) on both the upper and lower sides, and the support parts (7) are also provided with sliding grooves (8), and the first insert plate (5) and the second insert plate (6) are guided to slide through the sliding grooves (8); A spring (4) is also provided between the first insert plate (5) and the second insert plate (6), and the spring (4) causes the first insert plate (5) and the second insert plate (6) to move in opposite directions; The first insert plate (5) and the second insert plate (6) are also provided with a linkage member (3) on one side, and the first insert plate (5) and the second insert plate (6) are moved toward each other by the linkage member (3); The linkage (3) includes a crank arm (30), which slides in the guide groove (2) provided on the base plate (1) via a sliding rod (36).

2. The mounting base for a molded case circuit breaker according to claim 1, characterized in that: One end of the crank arm (30) is connected to the second insert plate (6) through a first connecting arm (31), and the other end of the crank arm (30) is connected to the first insert plate (5) through a second connecting part (32).

3. A molding case circuit breaker mounting base according to claim 2, characterized in that: The crank arm (30) is also provided with a socket (33), and the sliding rod (36) is adapted to the socket (33) through a provided pin (35); wherein the cross-section of the socket (33) is rectangular.

4. A molding case circuit breaker mounting base according to claim 3, characterized in that: One end of the sliding rod (36) passes through the guide groove (2) and is threaded into the nut (34).