A residual current circuit breaker with a self-locking indication button

Abstract

The utility model provides an electric leakage circuit breaker with self-locking indicating button. Mainly solve the problem that indicating button of circuit breaker is not easy to process and is easy to damage. Its characterized in be: the circumferential outer wall of button is smooth plane still, elastic member (13) is located in the shell, is used for providing the elastic force that button at least part extends the shell outside, first limit board (121) is located on the linkage lever, second limit board (21) is located in the inner wall of upper cover, when closing, button is limited by first limit board and makes it be in first position, when opening, button is limited by second limit board and makes it be in second position. The utility model provides an electric leakage circuit breaker with self-locking indicating button, and the button itself is not provided with barb, and the limiting when opening is realized through second limit board after the installation of upper cover, is convenient for processing and has long service life.

Description

Technical Field

[0001] This utility model relates to the field of switchgear, specifically to a residual current circuit breaker with a self-locking indicator button. Background Technology

[0002] Circuit breakers are characterized by advanced structure, reliable performance, strong breaking capacity, and a compact and aesthetically pleasing design. They are used for overload and short-circuit protection of lighting, power distribution lines, and equipment in office buildings, residences, and similar structures. They can also be used for infrequent switching and transfer of circuits. They are mainly used in various locations including industrial, commercial, high-rise, and residential buildings.

[0003] A residual current circuit breaker is a type of circuit breaker. Circuit breakers are generally equipped with indicator buttons. Conventional indicator buttons use a flexible arm with barbs to prevent them from coming off. On the one hand, this is not easy to manufacture, and on the other hand, the barbs themselves are not very strong and are easily damaged. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides a residual current circuit breaker with a self-locking indicator button, which mainly solves the problem that the indicator button of the circuit breaker is not easy to process and is easily damaged.

[0005] The specific proposal of this application is as follows:

[0006] A residual current circuit breaker with a self-locking indicator button includes a detachably connected base and a top cover. The base has a trip unit and a linkage rod opposite to the trip unit. The base has an opening slot and a button that movably engages with the opening slot. The button's circumferential outer wall is a smooth plane. An elastic element is disposed within the base to provide an elastic force that allows the button to extend at least partially beyond the base. A first limiting plate is disposed on the linkage rod.

[0007] The second limiting plate is located on the inner wall of the upper cover; when the circuit is closed, the button is limited by the first limiting plate to be in the first position; when the circuit is opened, the button is limited by the second limiting plate to be in the second position.

[0008] The elastic element is a spring.

[0009] The base is provided with a support plate, one end of the elastic element is in contact with the button, and the other end is in contact with the support plate.

[0010] The front end face of the second limiting plate is disposed opposite to the side wall of the support plate.

[0011] The base is provided with two guide plates, and a guide groove is formed between the guide plates to cooperate with the movement of the button.

[0012] The button includes an extension rod, on which a crossbar is provided. The crossbar cooperates with the first limiting plate and with the second limiting plate.

[0013] The base includes a middle shell and a side seat detachably connected to the middle shell, and a wiring assembly is mounted on the side seat.

[0014] The side seat is connected to the middle shell by rivets.

[0015] The side seat is provided with a first retaining plate, and the middle shell is provided with a second retaining plate that cooperates with the first retaining plate.

[0016] This application provides a residual current circuit breaker with a self-locking indicator button. The button itself does not have a barb, and the limit is achieved by the second limit plate after the top cover is installed. It is easy to manufacture and has a long service life. Attached Figure Description

[0017] Figure 1 This is an internal perspective view of one embodiment of the present utility model.

[0018] Figure 2 for Figure 1 Enlarged diagram of point A in the middle.

[0019] Figure 3 This is a partial perspective view of one embodiment of the present invention.

[0020] Figure 4 This is a partial cross-sectional view of one embodiment of the present invention.

[0021] Figure 5 This is a partial perspective view of one embodiment of the present invention. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings. A residual current circuit breaker with a self-locking indicator button includes a detachably connected base 1 and a top cover 2. The base is provided with a trip unit 11 and a linkage rod 12 opposite to the trip unit. The base is provided with an opening groove 111 and a button 3 that movably engages with the opening groove. The button's circumferential outer wall is a smooth plane. An elastic element is provided in the base to provide elastic force for the button to extend at least partially out of the base. A first limiting plate 121 is provided on the linkage rod. A second limiting plate 21 is provided on the inner wall of the top cover. When the circuit is closed, the button is limited by the first limiting plate to a first position. When the circuit is opened, the button is limited by the second limiting plate to a second position. The base and top cover can be disassembled and assembled using screws, which is existing technology and will not be described in detail. During installation, the button can be inserted into the opening slot from top to bottom. After installation, the top cover can be installed. In the closed state, the button is limited by the linkage rod, which is the same as existing technology. In the open state, the trip unit actuates, driving the linkage rod to rotate and disengage it from the button. The button rises under the action of the elastic element and is limited by the second limit plate to prevent it from falling out. The top cover must be opened to remove the button. The linkage rod is used to actuate the tripping of the circuit breaker, which is existing technology.

[0023] In this embodiment, as shown in the figure, the elastic element is a spring. The button has an internal cavity for one end of the spring to extend into; because the button is positioned, the spring will not fall out.

[0024] In this embodiment, as shown in the figure, a support plate 14 is provided inside the base. One end of the elastic element contacts the button, and the other end contacts the support plate. The support plate is used to support the other end of the spring.

[0025] In this embodiment, as shown in the figure, the front end face of the second limiting plate is disposed opposite to the side wall of the support plate. The two can be in contact or have a gap.

[0026] In this embodiment, as shown in the figure, the base is provided with two guide plates, and a guide groove 151 is formed between the guide plates to cooperate with the button. This serves to guide the button.

[0027] In this embodiment, as shown in the figure, the button includes an extension rod 33, on which a crossbar 331 is provided. The crossbar cooperates with the first limiting plate and the crossbar cooperates with the second limiting plate.

[0028] In this embodiment, as shown in the figure, the base includes a middle shell 101 and a side seat 102 detachably connected to the middle shell, and a wiring assembly is installed on the side seat.

[0029] In this embodiment, as shown in the figure, the side seat and the middle shell are connected by rivets.

[0030] In this embodiment, as shown in the figure, the side seat is provided with a first clamping plate 1021, and the middle shell is provided with a second clamping plate 1011 that cooperates with the first clamping plate. The side seat and the middle shell are finally connected by rivets, which are provided with rivet holes 103. However, in conventional technology, there is no positioning before riveting, which makes the operation more troublesome and is not conducive to subsequent automated assembly. This application adds a first clamping plate and a second clamping plate to achieve pre-positioning and facilitate riveting.

[0031] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] The embodiments described with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. The embodiments should not be considered as limitations on the present invention, but any improvements made based on the spirit of the present invention should be within the protection scope of the present invention.

Claims

1. A residual current circuit breaker with a self-locking indicator button, comprising a detachably connected base (1) and a top cover (2), wherein the base is provided with a trip unit (11) and a linkage rod (12) opposite to the trip unit, and the base is provided with an opening slot (111) and a button (3) that movably engages with the opening slot, characterized in that: Also includes The outer circumferential wall of the button is a smooth plane; An elastic element, disposed within the base, is used to provide an elastic force for the button to extend at least partially out of the base; The first limiting plate (121) is provided on the linkage rod; The second limiting plate (21) is provided on the inner wall of the upper cover; When the circuit is closed, the button is limited to the first position by the first limiting plate; When the circuit breaker is tripped, the button is limited by the second limiting plate to be in the second position.

2. A residual current circuit breaker with a self-locking indicator button according to claim 1, characterized in that: The elastic element is a spring.

3. A residual current circuit breaker with a self-locking indicator button according to claim 2, characterized in that: The base is provided with a support plate (14), one end of the elastic element is in contact with the button, and the other end is in contact with the support plate.

4. A residual current circuit breaker with a self-locking indicator button according to claim 3, characterized in that: The front end face of the second limiting plate is disposed opposite to the side wall of the support plate.

5. A residual current circuit breaker with a self-locking indicator button according to claim 4, characterized in that: The base is provided with two guide plates, and a guide groove (151) is formed between the guide plates to cooperate with the button.

6. A residual current circuit breaker with a self-locking indicator button according to claim 5, characterized in that: The button includes an extension rod (33), on which a crossbar (331) is provided. The crossbar cooperates with the first limiting plate and with the second limiting plate.

7. A residual current circuit breaker with a self-locking indicator button according to claim 6, characterized in that: The base includes a middle shell (101) and a side seat (102) detachably connected to the middle shell, on which a wiring assembly is mounted.

8. A residual current circuit breaker with a self-locking indicator button according to claim 7, characterized in that: The side seat is connected to the middle shell by rivets.

9. A residual current circuit breaker with a self-locking indicator button according to claim 8, characterized in that: The side seat is provided with a first locking plate (1021), and the middle shell is provided with a second locking plate (1011) that cooperates with the first locking plate.

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