Quick installation button with light guide function for circuit breaker

Abstract

The utility model discloses a quick installation button with a light guide function for a circuit breaker, which comprises a test button (2) buckled and connected on a circuit breaker shell (1), one side of the test button (2) is provided with a circuit board (3) detachably connected with the circuit breaker shell (1), the circuit board (3) is connected with an indication module (4), and the indication module (4) is connected with the test button (2). Light emitted by the indication module (4) is transmitted to the outside of the circuit breaker shell (1) through the test button (2) and a display function is realized; the test button (2) comprises a pressing part (201) and a sliding part (202) which are connected with each other, the middle part of the sliding part (202) is provided with a clamping block (203) which can deform inwards, and the lower end of the sliding part (202) extends to the inner side of the circuit breaker shell (1) and is buckled with the circuit breaker shell (1) through the clamping block (203). According to the utility model, the test button can be installed from the outside of the circuit breaker, so that the circuit complexity in the circuit breaker is reduced.

Description

Technical Field

[0001] The utility model relates to a circuit breaker, in particular to a quick installation button for the circuit breaker with a light guiding function. Background Art

[0002] In order to detect and protect against arc problems, circuit breakers are usually equipped with arc fault detection modules. When the arc fault detection module detects an arc signal, the circuit board controls the indicator light to flash as an alarm; when the arc signal reaches the threshold, the circuit board controls the circuit breaker to trip for protection, thereby preventing electrical fires caused by arc faults. On this basis, a test button needs to be installed on the outside of the circuit breaker, so that the operator can press the test button to trigger the circuit board to simulate an arc signal, thereby testing whether the circuit breaker can trip in time and achieve a protective effect.

[0003] In traditional circuit breakers, the indicator light for displaying arc faults and the test button for pressing the test are installed on the surface of the circuit breaker housing at the same time, but this layout will relatively increase the space occupied by the circuit breaker surface, thereby increasing the overall size of the circuit breaker. In response to the above problems, Patent 202220094249.3 discloses an arc test device with display, which sets the test button as a transparent material and installs the indicator light in the circuit breaker housing on one side of the test button, so that the light emitted by the indicator light can be displayed through the test button, so that the test button has both fault display and arc fault test functions, that is, avoiding the occupation of the surface space of the circuit breaker by the indicator light. However, since this structure and the traditional circuit breaker structure both need to set the indicator light at the edge position close to the circuit breaker housing during actual installation, the indicator light needs to lead out a power line from the circuit board in the middle of the circuit breaker and pass through various functional parts to connect the indicator light when wiring, thereby increasing the circuit complexity and wiring difficulty inside the circuit breaker. If the circuit board is directly extended to one side of the test button and an indicator light is integrated, it will increase the difficulty of installing the test button, that is, the test button cannot be installed from the inside of the circuit breaker after the circuit board is fixed.

[0004] Therefore, the existing circuit breaker arc test device has the problems of complex circuits and inconvenient installation of the test button. Utility Model Content

[0005] The purpose of the utility model is to provide a quick installation button for a circuit breaker with a light guiding function, which can install the test button from the outside of the circuit breaker, thereby reducing the complexity of the circuit inside the circuit breaker.

[0006] The technical solution of the utility model is as follows: a quick-install button for a circuit breaker with a light-guiding function, comprising a test button snap-fitted and connected to a circuit breaker housing, a circuit board detachably connected to the circuit breaker housing is provided on one side of the test button, an indication module is connected to the circuit board, light emitted by the indication module is transmitted to the outside of the circuit breaker housing via the test button and a display function is realized; the test button comprises a pressing portion and a sliding portion connected to each other, a snap-fit ​​block which can be deformed inwardly is provided in the middle of the sliding portion, and the lower end of the sliding portion extends to the inner side of the circuit breaker housing and is snap-fitted with the circuit breaker housing via the snap-fit ​​block.

[0007] In the aforementioned quick installation button for a circuit breaker with a light-guiding function, a through shrinkage groove is provided in the middle of the sliding portion, the locking block is arranged on the sliding portion on one side of the shrinkage groove, a pressing cavity slidably connected to the sliding portion is provided on the circuit breaker housing, and a locking plate is provided at the outer end of the pressing cavity for snap-fitting and connecting the locking block.

[0008] In the aforementioned quick installation button for a circuit breaker with a light guiding function, a limiting groove for slidingly connecting the pressing part is provided on the circuit breaker housing outside the pressing cavity, and the engaging plate is located at the interval between the limiting groove and the pressing cavity.

[0009] In the aforementioned quick installation button for a circuit breaker with a light guiding function, a button spring is connected to the circuit breaker housing inside the test button, and the lower end of the sliding part and the button spring are in contact with each other.

[0010] In the aforementioned quick-install button for a circuit breaker with a light-guiding function, the test button and the circuit board are arranged side by side left and right along the thickness direction of the circuit breaker housing, and an opening for matching the indication module is provided on the circuit breaker housing. The light emitted by the indication module passes through the opening and shines on the test button, so that the test button realizes the fault display function.

[0011] Compared with the prior art, the utility model has the following characteristics:

[0012] (1) The utility model uses a test button composed of a pressing portion, a sliding portion and a locking block, so that the test button can be directly inserted from the outside of the circuit breaker housing and snap-fitted into the circuit breaker housing during installation; based on the above, the utility model does not need to install the test button from the inside of the circuit breaker, so that the circuit board can extend to one side of the test button and install the indication module, that is, the connection line between the indication module and the circuit board is omitted, reducing the complexity of the circuit inside the circuit breaker;

[0013] (2) By setting the contraction groove on the sliding part, the locking block can be deformed inward after being subjected to force, thereby achieving the locking effect of the test button; by setting the contraction groove, the pressing cavity and the locking plate on the circuit breaker housing, the test button can maintain a sliding connection state after being buckled, thereby realizing the press test function of the test button;

[0014] Therefore, the utility model can install the test button from the outside of the circuit breaker, thereby reducing the complexity of the circuit inside the circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a connection diagram of the test button on one side of the circuit breaker;

[0016] Figure 2 This is a connection diagram of the test button on the other side of the circuit breaker;

[0017] Figure 3 is a cross-sectional view of the test button at the connection;

[0018] Figure 4 It is an exploded view of the circuit breaker housing and test button.

[0019] The markings in the accompanying drawings are: 1-circuit breaker housing, 2-test button, 3-circuit board, 4-indicator module, 5-pressing cavity, 6-clamping plate, 7-limiting groove, 8-button spring, 9-opening, 10-power extraction shaft, 201-pressing part, 202-sliding part, 203-clamping block, 204-contraction groove. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0021] Embodiment. A quick installation button for a circuit breaker with a light guide function, comprising: Figure 1 As shown, it includes a test button 2 that is snap-fitted to a circuit breaker housing 1. The test button 2 is made of a transparent material. A circuit board 3 that is detachably connected to the circuit breaker housing 1 is provided on one side of the test button 2. An indication module 4 is connected to the circuit board 3. The light emitted by the indication module 4 is transmitted to the outside of the circuit breaker housing 1 through the test button 2 and realizes a display function. The indication module 4 can use an LED lamp. The outside of the LED lamp is connected to a fault indication unit integrated on the circuit board 3. The test button 2 includes a pressing portion 201 and a sliding portion 202 that are connected to each other. A snap-fit ​​block 203 that can be deformed inwards is provided in the middle of the sliding portion 202. The lower end of the sliding portion 202 extends to the inner side of the circuit breaker housing 1 and is snap-fitted to the circuit breaker housing 1 through the snap-fit ​​block 203.

[0022] A through contraction groove 204 is provided in the middle of the sliding part 202, the engaging block 203 is arranged on the sliding part 202 on one side of the contraction groove 204, a pressing cavity 5 slidably connected to the sliding part 202 is provided on the circuit breaker housing 1, and a snap plate 6 is provided at the outer end of the pressing cavity 5 to snap-fit ​​and connect the engaging block 203.

[0023] A limiting groove 7 slidably connected to the pressing part 201 is provided on the circuit breaker housing 1 outside the pressing cavity 5, and the locking plate 6 is located at the interval between the limiting groove 7 and the pressing cavity 5. A limiting step is formed between the pressing part 201 and the sliding part 202. When the test button 2 is fully buckled, the inner end of the pressing part 201 is attached to the bottom surface of the limiting groove 7 via the limiting step to form a limit.

[0024] A button spring 8 is connected to the circuit breaker housing 1 inside the test button 2, the lower end of the sliding part 202 and the button spring 8 are in contact with each other, the outside of the button spring 8 is electrically connected to the circuit board 3, one end of the button spring 8 is in contact with the circuit breaker housing 1 and forms a limit for the rotation position of the button spring 8, and an electric power taking shaft 10 is provided on the outside of the other end of the button spring 8, the outside of the electric power taking shaft 10 is electrically connected to the circuit board 3, and the button spring 8 and the electric power taking shaft 10 are separated from each other in a normal state.

[0025] The test button 2 and the circuit board 3 are arranged side by side in the thickness direction of the circuit breaker housing 1. The circuit breaker housing 1 is provided with an opening 9 that cooperates with the indication module 4. The light emitted by the indication module 4 passes through the opening 9 and shines on the test button 2, so that the test button 2 realizes the fault display function after emitting light.

[0026] Working principle of the utility model: when installing, the test button 2 can be directly inserted into the pressing cavity 5 from the outside of the circuit breaker housing 1, and the engaging block 203 is blocked by the engaging plate 6 during the insertion process and shrinks inwards and then engages with the inner side of the engaging plate 6, so that the test button 2 is limited by the cooperation of the engaging plate 6 and the engaging block 203 to prevent the test button 2 from being released. After being buckled in, the test button 2 is attached to the button spring 8 below through the sliding part 202, and can slide downward along the pressing cavity 5 under the action of pressing and drive the button spring 8 to bend and deform, thereby realizing the press test function.

[0027] During the test, the operator presses the test button 2, so that the test button 2 slides downward after being pressed and drives the button spring 8 to deform until it contacts the power-taking shaft 10 to achieve line conduction. After the line is connected, the circuit board 3 triggers and simulates an arc signal, thereby driving the circuit breaker to trip and achieve the test effect. After the test is completed, the button spring 8 rebounds and drives the test button 2 to rise, completing the reset. When the fault indication unit detects an arc fault, it controls the indication module 4 to emit light, and the light generated by the indication module 4 passes through the opening 9 to irradiate the test button 2, and is transmitted to the outside through the transparent test button 2, so that outsiders can observe the arc fault situation through the light and dark of the test button 2, thereby realizing the fault display function.

Claims

1. A quick installation button for a circuit breaker with a light-guiding function, characterized in that: The invention comprises a test button (2) which is snap-fitted to a circuit breaker housing (1); a circuit board (3) which is detachably connected to the circuit breaker housing (1) is provided on one side of the test button (2); an indication module (4) is connected to the circuit board (3); light emitted by the indication module (4) is transmitted to the outside of the circuit breaker housing (1) via the test button (2) and realizes a display function; the test button (2) comprises a pressing portion (201) and a sliding portion (202) which are connected to each other; a snap-fit ​​block (203) which can be deformed inwards is provided in the middle of the sliding portion (202); the lower end of the sliding portion (202) extends to the inside of the circuit breaker housing (1) and is snap-fitted to the circuit breaker housing (1) via the snap-fit ​​block (203).

2. The quick installation button for a circuit breaker with a light guiding function according to claim 1, characterized in that: A through contraction groove (204) is provided in the middle of the sliding part (202); the engaging block (203) is arranged on the sliding part (202) on one side of the contraction groove (204); a pressing cavity (5) slidably connected to the sliding part (202) is provided on the circuit breaker housing (1); and an engaging plate (6) is provided at the outer end of the pressing cavity (5) for buckling and connecting to the engaging block (203).

3. The quick installation button for a circuit breaker with a light guiding function according to claim 2, characterized in that: A limiting groove (7) slidably connected to the pressing portion (201) is provided on the circuit breaker housing (1) outside the pressing cavity (5), and the clamping plate (6) is located at the interval between the limiting groove (7) and the pressing cavity (5).

4. The quick installation button for a circuit breaker with a light guiding function according to claim 1, characterized in that: A button spring (8) is connected to the circuit breaker housing (1) inside the test button (2), and the lower end of the sliding part (202) and the button spring (8) are in contact with each other.

5. The quick installation button for a circuit breaker with a light guiding function according to claim 1, characterized in that: The test button (2) and the circuit board (3) are arranged side by side in the thickness direction of the circuit breaker housing (1). The circuit breaker housing (1) is provided with an opening (9) for matching with the indication module (4). The light emitted by the indication module (4) passes through the opening (9) and irradiates the test button (2), so that the test button (2) realizes a display function.

Images