Internal power-taking feedback device of small reclosing circuit breaker

Abstract

The utility model relates to the technical field of small reclosing circuit breakers, in particular to an internal electricity-taking feedback device of a small reclosing circuit breaker, which comprises a main body, an adjusting assembly arranged in the main body, a tower-type spring connected with the adjusting assembly, a connecting plate arranged at one end of the tower-type spring, a pin connected with the connecting plate, and a mounting groove arranged in the main body. The bottom end of the connecting plate is provided with a hinge seat, the hinge seat is internally provided with a pressing plate, the bottom surface of one end of the pressing plate is provided with a pressure spring, the top end of the pressing plate is provided with an electric telescopic rod, the pressing plate is connected with a pressurizing plate, and the top end of the electric telescopic rod is provided with a sliding block; by utilizing the structure of the connecting plate, the through pipe, the hinge seat, the pressing plate, the pressurizing plate, the electric telescopic rod and the pressure spring, the problem that the pin in the structure directly penetrates through the through hole without additional fixing measures, so that the pin may loosen or fall off when being subjected to external force or vibration, and the stability of power taking is influenced is solved by utilizing the structure of the connecting plate, the through pipe, the hinge seat, the pressing plate, the pressurizing plate, the electric telescopic rod and the pressure spring.

Description

Technical Field

[0001] The utility model relates to the technical field of small reclosing circuit breakers, in particular to an internal power taking feedback device of a small reclosing circuit breaker. Background Art

[0002] According to the demand for intelligent power supply network in my country, State Grid Corporation requires intelligent power supply network. Therefore, the terminal actuator of the power supply network, the small circuit breaker (or miniature circuit breaker), needs to execute the upper end signal with tripping and closing functions. Therefore, the current development trend of small circuit breakers is that in addition to the traditional manual opening and closing and overcurrent and overload automatic tripping functions, they also need to have automatic opening and closing and reclosing functions to achieve remote control; especially in combination with smart meters, the functions of automatic tripping and power-off for arrears and automatic closing and power supply for charging can be realized. At present, the circuit board of the reclosing circuit breaker draws power from the circuit breaker body by connecting wires from the control circuit board or plugging in the power circuit board, etc. The overall assembly is relatively troublesome and costly.

[0003] And in the document with publication number CN219658641 U, a feedback power supply structure of a reclosing circuit breaker is mentioned, the structure includes a shell, the shell includes a first chamber and a second chamber, the first chamber is provided with a contact mechanism and an operating mechanism, the second chamber is provided with a reclosing mechanism and a circuit board, the first chamber is provided with a bimetallic strip, one end of the bimetallic strip is provided with an adjusting piece, and the other end is provided with an elastic reset piece, the reset piece is made of a conductive material, and a pin is integrally provided on the reset piece, one end of the pin extends into the second chamber for electrical connection with the circuit board, and the pin of the elastic piece is directly extended into the second chamber to be electrically connected to the circuit board for power supply, the structure is simple and easy to install, but there are still certain defects that need to be optimized. The specific defects are as follows: in this structure, the pin directly passes through the through hole, and there is no additional fixing measure. Therefore, when subjected to external force or vibration, the pin may loosen or fall off, affecting the stability of power supply.

[0004] Therefore, it is particularly important to design an internal power feedback device for a small reclosing circuit breaker to change the above technical defects and improve the overall practicality. Utility Model Content

[0005] The utility model aims to provide an internal power taking feedback device for a small reclosing circuit breaker to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A small reclosing circuit breaker internal power feedback device comprises a main body, an adjusting component is arranged inside the main body, the adjusting component is connected to a tower spring, one end of the tower spring is provided with a connecting plate, the connecting plate is connected to a pin, a mounting groove is arranged inside the main body, a through pipe is arranged inside the mounting groove, the top and bottom ends of the through pipe are provided with sliding grooves, the bottom end of the connecting plate is provided with a hinge seat, the inside of the hinge seat is provided with a pressure plate, the bottom surface of one end of the pressure plate is provided with a compression spring, the top end of the pressure plate is provided with an electric telescopic rod, the pressure plate is connected to a pressure plate, and the top end of the electric telescopic rod is provided with a slider.

[0008] As a preferred solution of the utility model, the adjustment assembly includes an adjustment screw and a bimetallic strip, one end of the tower spring is in contact with the bimetallic strip, and the contraction and extension of the tower spring is controlled by adjusting the bimetallic strip through the adjustment screw.

[0009] As a preferred solution of the utility model, a contact mechanism, an operating mechanism, a reclosing mechanism and a circuit board are provided inside the main body, the contact mechanism includes a moving contact and a static contact, the operating mechanism includes a handle, the reclosing mechanism includes a motor and a gear transmission mechanism, and the mounting groove is arranged on the circuit board.

[0010] As a preferred solution of the utility model, the slider is slidably connected to the slide groove, and a plurality of balls are provided inside the slide groove at the bottom end to assist the displacement of the connecting plate, and an electric push rod is provided on one side of the slider.

[0011] As a preferred solution of the utility model, the pressure plate is in a U-shape, and a fixing block is provided on the inner side of the pressure plate for fixing the position of the pin.

[0012] As a preferred solution of the utility model, the connecting plate and the hinge seat are rotatably connected, a telescopic rod is provided inside the compression spring, the telescopic rod includes a large sleeve and a small sleeve, the large sleeve and the small sleeve are slidably connected, and a limit plate is provided at one end of the small sleeve to prevent the large sleeve from detaching from the small sleeve.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In the utility model, a small reclosing circuit breaker internal power feedback device is set up, and the structure of the connecting plate, through-tube, hinged seat, pressure plate, pressure plate, electric telescopic rod, and compression spring is used. The electric push rod and the electric telescopic rod work together, and the slider slides in the slide slot to adjust the pin position. When the electric telescopic rod is extended, the pressure plate presses down to make the pressure plate lift the pin. After contact, the electric telescopic rod contracts and the compression spring extends. The pin position is fixed by the pressure plate and the pressure plate, which solves the problem that the pin in the structure directly passes through the through hole without additional fixing measures. Therefore, when subjected to external force or vibration, the pin may loosen or fall off, affecting the stability of power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the entire utility model;

[0016] Figure 2 It is a schematic diagram of the pressure plate assembly of the utility model;

[0017] Figure 3 It is a schematic diagram of the planar structure of the adjusting assembly and the pressure plate assembly of the utility model.

[0018] In the figure: 1. main body; 101. adjustment component; 102. tower spring; 103. connecting plate; 104. pin; 2. mounting groove; 201. through pipe; 202. slide groove; 203. hinge seat; 204. pressure plate; 205. electric telescopic rod; 206. pressure plate; 207. slider; 208. compression spring. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively with reference to the relevant drawings below. Several embodiments of the utility model are given. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0023] For examples, see Figure 1-3 , the utility model provides a technical solution:

[0024] A small reclosing circuit breaker internal power feedback device comprises a main body 1, wherein an adjusting component 101 is arranged inside the main body 1, wherein the adjusting component 101 is connected to a tower spring 102, wherein one end of the tower spring 102 is provided with a connecting plate 103, wherein the connecting plate 103 is connected to a pin 104, wherein an installation slot 2 is arranged inside the main body 1, wherein a through pipe 201 is arranged inside the installation slot 2, wherein the top and bottom of the through pipe 201 are both provided with a slide slot 202, wherein an articulated seat 203 is arranged at the bottom end of the connecting plate 103, wherein a pressing plate 204 is arranged inside the articulated seat 203, wherein a compression spring 208 is arranged on the bottom surface of one end of the pressing plate 204, wherein an electric telescopic rod 205 is arranged at the top end of the pressing plate 204, wherein the pressing plate 204 is connected to a pressurizing plate 206, wherein a slider 207 is arranged at the top end of the electric telescopic rod 205, wherein when the circuit breaker is in a normally closed state, the adjusting component 101 controls the extension of the tower spring 102 by adjusting a screw and a bimetallic strip so that the extension of the tower spring 102 on the connecting plate 103 is The pin 104 contacts the corresponding contact point on the circuit board, thereby ensuring the normal transmission of electric energy and the reception of feedback signals. When the circuit breaker needs to be disconnected or closed, the operating mechanism such as the handle will start the reclosing mechanism, which includes a motor and a gear transmission mechanism. These mechanisms will drive the movement between the moving contact and the static contact, and will also affect the working state of the contact mechanism and the circuit board inside the main body 1, wherein the electric push rod extends, and as the slider 207 slides to a suitable position inside the slide groove 202, the electric telescopic rod 205 is started at the same time. At this time, the electric telescopic rod 205 extends downward, driving the pressure plate 204 to press the compression spring 208 downward, so that the pressure plate 206 rotates around the hinge seat 203 as the center, and lifts the pressure plate 206. After the pin 104 contacts the contact point, the electric telescopic rod 205 contracts, and the compression spring 208 extends to lift the pressure plate 204. At this time, the pressure plate 206 squeezes the pin 104 to fix the position of the pin 104;

[0025] The adjusting assembly 101 includes an adjusting screw and a bimetallic strip. One end of the tower spring 102 contacts the bimetallic strip, and the tower spring 102 is controlled to contract and extend by adjusting the bimetallic strip by adjusting the screw, so as to adjust the position of the pin. A contact mechanism, an operating mechanism, a reclosing mechanism and a circuit board are arranged inside the main body 1. The contact mechanism includes a moving contact and a static contact. The operating mechanism includes a handle. The reclosing mechanism includes a motor and a gear transmission mechanism. The mounting groove 2 is arranged on the circuit board to facilitate the normal operation of the small reclosing circuit breaker. The slider 207 is slidably connected to the slide groove 202, and the slide at the bottom is A plurality of ball bearings are arranged inside the groove 202 to assist the displacement of the connecting plate 103. An electric push rod is arranged on one side of the slider 207 to facilitate the displacement of the electric telescopic rod. The pressure plate 206 is U-shaped. A fixing block is arranged on the inner side of the pressure plate 206 to fix the position of the pin 104. The connecting plate 103 and the hinge seat 203 are rotatably connected. A telescopic rod is arranged inside the compression spring 208. The telescopic rod includes a large sleeve and a small sleeve. The large sleeve and the small sleeve are slidably connected. A limiting plate is arranged at one end of the small sleeve to prevent the large sleeve from being separated from the small sleeve, so as to facilitate the directional extension and contraction of the compression spring.

[0026] The working process of the utility model is as follows: when using the internal power feedback device of the small reclosing circuit breaker, first, when the circuit breaker is in a normal closed state, the adjustment component 101 controls the extension of the tower spring 102 by adjusting the screw and the bimetallic strip, so that the pin 104 on the connecting plate 103 contacts the corresponding contact point on the circuit board, thereby ensuring the normal transmission of electric energy and the reception of feedback signals. When the circuit breaker needs to be opened or closed, the operating mechanism such as the handle will start the reclosing mechanism, which includes a motor and a gear transmission mechanism, which will drive the action between the moving contact and the static contact, and will also affect the The working state of the contact mechanism and the circuit board inside the main body 1 is affected, wherein the electric push rod extends, and as the slider 207 slides to a suitable position inside the slide groove 202, the electric telescopic rod 205 is started at the same time. At this time, the electric telescopic rod 205 extends downward, driving the pressure plate 204 to squeeze the compression spring 208 downward, so that the pressure plate 206 rotates around the hinge seat 203 as the center, and the pressure plate 206 is lifted. When the pin 104 contacts the contact point, the electric telescopic rod 205 contracts, and the compression spring 208 extends to lift the pressure plate 204. At this time, the pressure plate 206 squeezes the pin 104 to fix the position of the pin 104.

[0027] Although the 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 small reclosing circuit breaker internal power feedback device, comprising a main body (1), characterized in that: An adjusting component (101) is provided inside the main body (1), the adjusting component (101) is connected to a tower spring (102), one end of the tower spring (102) is provided with a connecting plate (103), the connecting plate (103) is connected to a pin (104), a mounting groove (2) is provided inside the main body (1), a through pipe (201) is provided inside the mounting groove (2), the top and bottom of the through pipe (201) are both provided with a slide groove (202), a hinge seat (203) is provided at the bottom end of the connecting plate (103), a pressing plate (204) is provided inside the hinge seat (203), a compression spring (208) is provided on the bottom surface of one end of the pressing plate (204), an electric telescopic rod (205) is provided at the top end of the pressing plate (204), the pressing plate (204) is connected to a pressure plate (206), and a slider (207) is provided at the top end of the electric telescopic rod (205).

2. The internal power feedback device of a small reclosing circuit breaker according to claim 1 is characterized in that: The adjustment component (101) comprises an adjustment screw and a bimetallic strip, one end of the tower spring (102) is in contact with the bimetallic strip, and the bimetallic strip is adjusted by the adjustment screw to control the contraction and extension of the tower spring (102).

3. The internal power feedback device of a small reclosing circuit breaker according to claim 1 is characterized in that: The main body (1) is provided with a contact mechanism, an operating mechanism, a reclosing mechanism and a circuit board inside, the contact mechanism comprising a moving contact and a stationary contact, the operating mechanism comprising a handle, the reclosing mechanism comprising a motor and a gear transmission mechanism, and the mounting slot (2) is provided on the circuit board.

4. The internal power feedback device of a small reclosing circuit breaker according to claim 1 is characterized in that: The slider (207) is slidably connected to the slide groove (202), and a plurality of balls are arranged inside the slide groove (202) at the bottom end for assisting the displacement of the connecting plate (103). An electric push rod is arranged on one side of the slider (207).

5. The internal power feedback device of a small reclosing circuit breaker according to claim 1, characterized in that: The pressure plate (206) is in a U shape, and a fixing block is provided on the inner side of the pressure plate (206) for fixing the position of the pin (104).

6. The internal power feedback device of a small reclosing circuit breaker according to claim 1, characterized in that: The connecting plate (103) and the hinge seat (203) are rotatably connected, a telescopic rod is provided inside the compression spring (208), the telescopic rod comprises a large sleeve and a small sleeve, the large sleeve and the small sleeve are slidably connected, and a limit plate is provided at one end of the small sleeve to prevent the large sleeve from being separated from the small sleeve.

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