Molded case circuit breaker

Abstract

The molded case circuit breaker comprises a molded case circuit breaker body, one corner, close to the back, of the top of the molded case circuit breaker body is detachably connected with a connecting plate, and the other corner, close to the back, of the top of the molded case circuit breaker body is fixedly connected with a first fixing column. A mounting groove is formed in the corner, close to the connecting plate, of the top of the molded case circuit breaker body, a second fixing column is slidably arranged in the mounting groove, and an elastic part is mounted between the second fixing column and the inner wall of the mounting groove. Through the arrangement of the connecting plate, the first fixing column and the second fixing column capable of sliding left and right on the top of the molded case circuit breaker body, two adjacent molded case circuit breaker bodies can be rapidly installed, the first fixing column can be clamped by the second clamping groove, the second fixing column can be clamped by the first clamping groove, and the molded case circuit breaker body can be rapidly installed. Therefore, the two molded case circuit breaker bodies can be stably connected in the left-right direction, and the two molded case circuit breaker bodies can be prevented from shifting and shaking in the front-back direction through the insertion plates and the insertion grooves.

Description

Technical Field

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

[0002] Molded case circuit breakers are devices used for long-time delay in overload and instantaneous short circuit, including the rated ultimate short circuit breaking capacity, current limiting breaking capacity and other characteristics. They are used in various circuit controls, and when a short circuit occurs in the circuit, power will be cut off to protect the circuit.

[0003] Most of the existing circuit breakers are installed on the mounting plate on the rear wall of the electrical box, and then multiple circuit breakers are fixed by bolts to ensure that the multiple circuit breakers are in close contact and remain fixed. However, this installation method requires four bolts to be twisted to install a circuit breaker. A large number of bolts need to be twisted to install multiple circuit breakers. If the circuit breaker fails and needs to be replaced, it is also necessary to find tools to twist the bolts for disassembly, which is relatively cumbersome. Utility Model Content

[0004] The purpose of the utility model is to provide a molded case circuit breaker to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a molded case circuit breaker, comprising a molded case circuit breaker body, a connecting plate is detachably connected to a corner of the top of the molded case circuit breaker body near the back, a first fixing column is fixedly connected to another corner of the top of the molded case circuit breaker body near the back, a mounting groove is provided at a corner of the top of the molded case circuit breaker body near the connecting plate, a second fixing column is slidably arranged inside the mounting groove, an elastic member is installed between the second fixing column and the inner wall of the mounting groove, and the connecting plate and the first fixing column and the second fixing column are used in conjunction with each other.

[0006] As a preferred solution of the utility model, a second card slot is provided at one end of the connecting plate, a first card slot is provided at the other end of the connecting plate, a slot is provided on the inner wall of the first card slot away from one side of the connecting plate, and the second fixing column is fixedly connected to a plug plate that cooperates with the slot on a side wall away from the connecting plate.

[0007] As a preferred solution of the utility model, sliding grooves are symmetrically provided on both sides of the inner wall of the installation groove, and sliding blocks are fixedly connected on both sides of the second fixing column and at positions corresponding to the sliding grooves, and the sliding blocks are slidably connected to the sliding grooves.

[0008] As a preferred solution of the utility model, a screw is threadedly connected to the top corner of the molded case circuit breaker body, and the connecting plate is threadedly connected to the screw.

[0009] As a preferred solution of the present invention, the top ends of the first fixing column and the second fixing column are both boss-shaped structures.

[0010] As a preferred solution of the utility model, two mounting holes are provided at the top and bottom ends of the molded case circuit breaker body.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model can quickly install two adjacent molded case circuit breaker bodies by providing a connecting plate, a first fixing column and a second fixing column that can slide left and right on the top of the molded case circuit breaker body, the second slot can clamp the first fixing column, and the first slot can clamp the second fixing column, so that the two molded case circuit breaker bodies can be stably connected in the left and right directions, and the plug plate and the slot can prevent the two molded case circuit breaker bodies from deviating and shaking in the front and back directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the connection structure of the molded case circuit breaker body of the utility model;

[0013] Figure 2 For the utility model Figure 1 The enlarged structural diagram at A in the middle;

[0014] Figure 3 This is a schematic diagram of the structure of the second fixing column of the utility model;

[0015] Figure 4 This is a schematic diagram of the connecting plate structure of the utility model.

[0016] In the figure: 1. Molded case circuit breaker body; 2. Connecting plate; 3. Screw; 4. First fixing column; 5. Second fixing column; 6. Mounting slot; 7. Slide slot; 8. Elastic member; 9. Slider; 10. Insert plate; 11. Slot; 12. First card slot; 13. Second card slot; 14. Mounting hole. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figures 1 to 4The utility model provides a technical solution: a molded case circuit breaker, including a molded case circuit breaker body 1, which is a device for long-time delay overload and instantaneous short-circuit. A corner of the top of the molded case circuit breaker body 1 near the back is detachably connected to a connecting plate 2, and another corner of the top of the molded case circuit breaker body 1 near the back is fixedly connected to a first fixing column 4. A mounting groove 6 is provided at the corner of the top of the molded case circuit breaker body 1 near the connecting plate 2. The left end of the mounting groove 6 is in a shape that fits the outer side of the second fixing column 5. A second fixing column 5 is slidingly arranged inside the mounting groove 6. An elastic member 8 is installed between the second fixing column 5 and the inner wall of the mounting groove 6. The elastic member 8 can be a spring. The elastic member 8 can always provide a rightward pulling force to the second fixing column 5, and the connecting plate 2 and the first fixing column 4 and the second fixing column 5 are used in conjunction with each other.

[0019] Among them, a second slot 13 is opened at one end of the connecting plate 2, and a corner of the second slot 13 close to the screw 3 is chamfered. A first slot 12 is opened at the other end of the connecting plate 2. The slot width of the first slot 12 is larger than the diameter of the second fixing column 5 plus the length of the plug-in plate 10. A slot 11 is opened on the inner wall of the first slot 12 away from the side of the connecting plate 2. A plug-in plate 10 matching the slot 11 is fixedly connected to a side wall of the second fixing column 5 away from the connecting plate 2. After the plug-in plate 10 is inserted into the slot 11, the rotation position of the connecting plate 2 can be fixed.

[0020] Among them, sliding grooves 7 are symmetrically opened on both sides of the inner wall of the installation groove 6, and sliding blocks 9 are fixedly connected on both sides of the second fixed column 5 and at positions corresponding to the sliding grooves 7. The sliding blocks 9 are slidably connected to the sliding grooves 7. When the second fixed column 5 moves, the sliding blocks 9 can improve the stability of the movement of the second fixed column 5 and prevent the second fixed column 5 from sliding out from the inside of the installation groove 6.

[0021] Among them, a screw 3 is threadedly connected at the top corner of the molded case circuit breaker body 1, and the connecting plate 2 and the screw 3 are threadedly connected. The connecting plate 2 can be disassembled by twisting the screw 3, so that the connecting plate 2 that is damaged in use can be replaced conveniently.

[0022] The top ends of the first fixing column 4 and the second fixing column 5 are both boss-shaped structures, and the boss shape can prevent the connecting plate 2 from sliding out from the tops of the first fixing column 4 and the second fixing column 5 .

[0023] There are two mounting holes 14 at the top and bottom of the molded case circuit breaker body 1 , and bolts can be inserted into the mounting holes 14 to fix the molded case circuit breaker body 1 on the wall.

[0024] Specifically, align the sides of the two molded case circuit breaker bodies 1 that need to be connected to each other, then pull the second fixing column 5 to the left to make the slider 9 slide inside the slide groove 7, and at the same time the elastic member 8 stretches, and then rotate the connecting plate 2 to make the second card groove 13 snap into the outer side of the first fixing column 4, and at the same time the first card groove 12 snap into the outer side of the second fixing column 5, and then release the second fixing column 5 so that the elastic member 8 drives the second fixing column 5 to reset, and at the same time the plug-in plate 10 is inserted into the slot 11, thereby completing the connection between the two molded case circuit breaker bodies 1.

[0025] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0027] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A molded case circuit breaker, comprising a molded case circuit breaker body (1), characterized in that: A connecting plate (2) is detachably connected to a corner of the top of the molded case circuit breaker body (1) near the back, and a first fixing column (4) is fixedly connected to another corner of the top of the molded case circuit breaker body (1) near the back. A mounting groove (6) is provided at a corner of the top of the molded case circuit breaker body (1) near the connecting plate (2), and a second fixing column (5) is slidably arranged inside the mounting groove (6). An elastic member (8) is installed between the second fixing column (5) and the inner wall of the mounting groove (6), and the connecting plate (2) is used in conjunction with the first fixing column (4) and the second fixing column (5).

2. A molded case circuit breaker according to claim 1, characterized in that: A second card slot (13) is provided at one end of the connecting plate (2), a first card slot (12) is provided at the other end of the connecting plate (2), a slot (11) is provided on the inner wall of the first card slot (12) away from the connecting plate (2), and a plug plate (10) matching the slot (11) is fixedly connected to a side wall of the second fixing column (5) away from the connecting plate (2).

3. A molded case circuit breaker according to claim 2, characterized in that: Slide grooves (7) are symmetrically provided on both sides of the inner wall of the installation groove (6), and sliding blocks (9) are fixedly connected on both sides of the second fixing column (5) and at positions corresponding to the slide grooves (7), and the sliding blocks (9) are slidably connected to the slide grooves (7).

4. A molded case circuit breaker according to claim 3, characterized in that: A screw (3) is threadedly connected to the top corner of the molded case circuit breaker body (1), and the connecting plate (2) and the screw (3) are threadedly connected.

5. A molded case circuit breaker according to claim 4, characterized in that: The top ends of the first fixing column (4) and the second fixing column (5) are both boss-shaped structures.

6. A molded case circuit breaker according to claim 4, characterized in that: Two mounting holes (14) are provided at the top and bottom of the molded case circuit breaker body (1).

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