Molded case circuit breaker

Abstract

The utility model discloses a molded case circuit breaker, which comprises a molded case circuit breaker shell, a wiring pressing seat is rotatably arranged on the molded case circuit breaker shell, a fixing mechanism is arranged on the wiring pressing seat, and after the wiring pressing seat rotates to be closed with the molded case circuit breaker shell, the wiring pressing seat and the molded case circuit breaker shell can be fixed through the fixing mechanism. A wiring groove is formed in a shell of the molded case circuit breaker, a pressing plate is arranged on the wiring pressing seat, and after the wiring pressing seat is rotated to be closed, the pressing plate can be rotated into the wiring groove along with the wiring groove to press a wire end. When the molded case circuit breaker is installed, the wiring pressing seat is firstly rotated open, then the wiring board is pulled out, a plurality of wires needing to be installed are wound on the guide columns in a one-to-one correspondence mode, then the wiring pressing seat is rotated, the plurality of wires can be directly pressed through the pressing plate, and the installation efficiency between the plurality of wires and the molded case circuit breaker is improved.

Description

Technical Field

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

[0002] Molded case circuit breakers automatically interrupt current flow when the current exceeds the trip setting. The molded case refers to the plastic insulator used as the device's outer casing, which isolates the conductors from each other and grounded metal parts. Molded case circuit breakers typically include a thermal-magnetic trip unit, while larger models may be equipped with a solid-state trip sensor.

[0003] Existing molded case circuit breakers have wiring screws threadedly installed on their housings at the wiring positions. When wiring, the screws need to be loosened or unscrewed first, the wire ends to be wired are wrapped around the screws, and then the screws are tightened to complete the wiring. However, the molded case circuit breaker needs to connect multiple wires, and multiple wires need to be installed on the molded case circuit breaker by removing the screws one by one, which is very time-consuming. Utility Model Content

[0004] The purpose of the present 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 present invention provides the following technical solutions: a molded case circuit breaker, comprising a molded case circuit breaker shell, a wiring pressure seat rotatably provided on the molded case circuit breaker shell, a fixing mechanism provided on the wiring pressure seat, after the wiring pressure seat is rotated to close with the molded case circuit breaker shell, the fixing mechanism can be used to achieve fixation between the wiring pressure seat and the molded case circuit breaker shell, a wiring groove is provided on the molded case circuit breaker shell, a pressure plate is provided on the wiring pressure seat, after the wiring pressure seat is rotated and closed, the pressure plate will follow and rotate into the wiring groove to press the wiring head tightly.

[0006] As a preferred solution of the present invention, a wiring board is movably provided in the wiring slot, and a guide post for winding the copper wire of the wiring head is fixedly connected to the wiring board.

[0007] As a preferred solution of the present invention, a first guide groove is provided on the guide column, and a second guide groove is provided on the top of the guide column.

[0008] As a preferred solution of the present invention, the fixing mechanism includes an insertion rod, a sliding groove is provided inside the wiring pressure seat, a limit plate is slidingly provided inside the sliding groove, a plug rod is fixedly connected to one side of the limit plate, a spring is sleeved on the outer side of the plug rod, a fixing hole is provided on the housing of the molded case circuit breaker at a position corresponding to the plug rod, and the plug rod is movably connected to the fixing hole.

[0009] As a preferred solution of the present invention, the inner diameter of the pressing plate is larger than the outer diameter of the guide pillar.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention provides a rotary wiring pressure seat, which can be used to rotate the wiring pressure seat when connecting the wires to the molded case circuit breaker, and then the terminal board is pulled out, and the multiple wires to be installed are wound around the guide column one by one, and then the wiring pressure seat is rotated to directly press the multiple wires through the pressure plate, thereby improving the installation efficiency between the multiple wires and the molded case circuit breaker, and the first guide groove and the second guide groove provided can locate the position of the wiring head, so that the wiring head can be stably wound around the guide column. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional diagram of the utility model;

[0012] Figure 2 This is a structural diagram of the wiring pressure seat of the utility model after it is turned open;

[0013] Figure 3 This is a schematic diagram of the fixing mechanism structure of the utility model;

[0014] Figure 4 This is a schematic diagram of the guide column structure of the present utility model.

[0015] In the figure: 1. Molded case circuit breaker housing; 2. Wiring pressure seat; 3. Fixing mechanism; 31. Insertion rod; 32. Slide groove; 33. Spring; 34. Limit plate; 4. Fixing hole; 5. Wiring groove; 6. Wiring board; 7. Guide column; 71. First guide groove; 72. Second guide groove; 8. Pressure plate. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] See also Figures 1 to 4The utility model provides a technical solution: a molded case circuit breaker, including a molded case circuit breaker housing 1, a wiring pressure seat 2 is rotatably provided on the molded case circuit breaker housing 1, and a fixing mechanism 3 is provided on the wiring pressure seat 2. After the wiring pressure seat 2 is rotated to close with the molded case circuit breaker housing 1, the fixing mechanism 3 can be used to achieve the fixation between the wiring pressure seat 2 and the molded case circuit breaker housing 1. A wiring groove 5 is provided on the molded case circuit breaker housing 1, and the wiring head can be inserted into the wiring groove 5. A pressure plate 8 is provided on the wiring pressure seat 2, and the inner side of the pressure plate 8 is an arc structure. After the wiring pressure seat 2 is rotated and closed, the pressure plate 8 will follow and rotate into the interior of the wiring groove 5 to press the wiring head, and the bottom of the pressure plate 8 will press the wire, and the inner side of the pressure plate 8 will press the wiring head, which is doubly pressed and fixed.

[0018] Among them, a terminal block 6 is movably provided in the terminal slot 5, so that the terminal block 6 can be pulled out from the terminal slot 5 to facilitate wiring. A guide post 7 is fixedly connected to the terminal block 6 for winding the copper wire of the terminal head. The inner diameter of the pressure plate 8 is larger than the outer diameter of the guide post 7. The gap reserved between the pressure plate 8 and the guide post 7 can facilitate winding of the copper wire.

[0019] Among them, a first guide groove 71 is provided on the guide column 7, which can facilitate the copper wire to be guided upward along the guide column 7. A second guide groove 72 is provided on the top of the guide column 7, which can guide the copper wire horizontally and then facilitate the copper wire to be wound around the guide column 7.

[0020] The cam 33 is pressed against the top of the cam 33 and the cam 33 is pressed against the top of the cam 33 to release the cam 33. When the cam 33 is pressed against the top of the cam 33, the cam 33 is pressed against the bottom of the cam 33 and the cam 33 is pressed against the top of the cam 33.

[0021] Specifically, when it is necessary to install the wires and the molded case circuit breaker, the terminal block 6 can be first pulled out of the wiring slot 5, and then the copper wire can be arranged along the first guide groove 71 and the second guide groove 72, and then the copper wire can be wound around the guide column 7, and then the terminal block 6 can be inserted back into the wiring slot 5, and then the insertion rod 31 can be pulled toward the outside of the wiring pressure seat 2, so that the limit plate 34 can squeeze the spring 33. When the wiring pressure seat 2 is rotated to close with the molded case circuit breaker housing 1, the insertion rod 31 is released, and the thrust of the spring 33 drives the insertion rod 31 to reset and insert into the fixing hole 4, thereby achieving fixation between the wiring pressure seat 2 and the molded case circuit breaker housing 1, thereby completing the installation between the wires and the molded case circuit breaker.

[0022] 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", "two ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship 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 cannot be understood as a limitation on the present invention.

[0023] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one such feature.

[0024] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like 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 present invention according to the specific circumstances.

[0025] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and 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 housing (1), characterized in that: A wiring press seat (2) is rotatably provided on the molded case circuit breaker housing (1), and a fixing mechanism (3) is provided on the wiring press seat (2). After the wiring press seat (2) is rotated to be closed with the molded case circuit breaker housing (1), the fixing mechanism (3) can realize the fixation between the wiring press seat (2) and the molded case circuit breaker housing (1). A wiring groove (5) is provided on the molded case circuit breaker housing (1), and a pressure plate (8) is provided on the wiring press seat (2). After the wiring press seat (2) is rotated and closed, the pressure plate (8) will follow and rotate into the wiring groove (5) to press the wiring head tightly.

2. The molded case circuit breaker according to claim 1, characterized in that: A wiring board (6) is movably provided in the wiring slot (5), and a guide post (7) for winding the copper wire of the wiring head is fixedly connected to the wiring board (6).

3. The molded case circuit breaker according to claim 2, characterized in that: A first guide groove (71) is provided on the guide column (7), and a second guide groove (72) is opened on the top of the guide column (7).

4. The molded case circuit breaker according to claim 3, characterized in that: The fixing mechanism (3) includes an insert rod (31), a sliding groove (32) is provided inside the wiring pressure seat (2), a limit plate (34) is slidably provided inside the sliding groove (32), one side of the limit plate (34) is fixedly connected to the insert rod (31), a spring (33) is sleeved on the outer side of the insert rod (31), a fixing hole (4) is provided on the housing (1) of the molded case circuit breaker at a position corresponding to the insert rod (31), and the insert rod (31) and the fixing hole (4) are movably connected.

5. The molded case circuit breaker according to claim 3, characterized in that: The inner diameter of the pressing plate (8) is greater than the outer diameter of the guide pillar (7).

Images