Circuit breaker opening and closing coil protection device

Abstract

The utility model discloses a breaker opening and closing coil protection device, which comprises a breaker box and a multi-coil protection assembly, the multi-coil protection assembly comprises brackets symmetrically arranged on two sides of the device, coils are wound on the surfaces of the brackets, one side of each coil is provided with an input end in a butt joint manner, and the other side of each coil is provided with an output end in a butt joint manner. One end of the coil on the other side is provided with an output end in a butt joint mode, the bottom of the coil is provided with a power connection ring, one side of the power connection ring is provided with a circuit board in a butt joint mode, the surface of the circuit board is communicated with the power connection ring and provided with a copper strip, the middle of the copper strip is provided with a notch, the outer side of the coil is covered with a protective cover, and the surface of the protective cover is evenly provided with heat dissipation holes. The inner side and the outer side of the coil of the multi-coil protection assembly enhance the protection effect of the coil, so that the problems of dust accumulation, overheating and the like of the coil in a physical state are avoided; the bracket inserted into the coil plays a role in supporting the coil and is relatively separated from the coil, so that the problem of local overheating caused by too tight winding of the coil is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to circuit breaker switching coil technical field especially relates to a circuit breaker switching coil protection device. BACKGROUND

[0002] Circuit breaker switching coil is the key component for controlling circuit opening and closing in circuit breaker. In actual application, in order to ensure the reliability and safety of circuit breaker, low voltage test is usually carried out on switching coil to verify whether the action characteristics thereof under different voltage conditions meet the requirements. These tests include recording ambient temperature, humidity, confirming the state of circuit breaker and correctly connecting test instruments and other steps. In addition, switching coil is usually designed for short-time power supply, and long-time power supply can cause coil overheating and even damage.

[0003] A circuit breaker switching coil protection device is disclosed in Chinese patent application No. CN204761020U. The patent belongs to the field of circuit breaker coil protection and is used for protecting the coil of circuit breaker switching. It includes circuit breaker operation circuit, closing circuit and circuit breaker signal circuit. The circuit breaker signal circuit includes control switch, contactor, fuse, anti-jumping relay, intermediate relay. The closing circuit includes end point +Won and end point-Won. Between the two end points, there are fuse 3FU, normally open contact 3-4 of contactor KMC and circuit breaker closing coil Yon in series. In view of the above technical solution, the utility model can reduce the burning of circuit breaker switching coil, the circuit structure is easy to maintain and replace, and can effectively reduce the burning of switching coil during switching.

[0004] The prior art uses control circuit to protect the coil from burning, but the coil of circuit breaker lacks corresponding protection device during physical installation. Even if the circuit control reduces the risk of coil burning, it cannot avoid the self-burning of coil due to overheating, dust accumulation and short circuit, so it needs to be improved. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the shortcomings in the prior art and provides a circuit breaker switching coil protection device.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A circuit breaker switching coil protection device includes a circuit breaker box and further includes:

[0008] The multiple coil protection assembly comprises brackets symmetrically arranged on both sides of the device, coils are arranged on the surfaces of the brackets, an input end is arranged on one side of the coil, an output end is arranged on one end of the other side of the coil, an electricity receiving ring is arranged at the bottom of the coil, a circuit board is arranged on one side of the electricity receiving ring, a copper strip is arranged on the surface of the circuit board and connected with the electricity receiving ring, a notch is arranged in the middle of the copper strip, a protective cover is arranged on the outer side of the coil, and heat dissipation holes are uniformly arranged on the surface of the protective cover.

[0009] Further technical solutions, the bottom of the bracket is fixedly provided with a tripod.

[0010] Further technical solutions, further comprising:

[0011] The opening and closing assembly comprises a rotating shaft rotatably arranged in the bracket, a pressing plate is arranged on one side of the rotating shaft, a movable part is arranged on one side of the pressing plate, a rod is arranged on one side of the pressing plate, and a copper sheet is arranged on one side of the rod.

[0012] Further technical solutions, the size of the copper sheet is consistent with the size of the notch in the middle of the copper strip.

[0013] Further technical solutions, a bearing is arranged at the position where the rotating shaft is arranged in the bracket, and a lubricating material is applied in the bearing.

[0014] Further technical solutions, further comprising:

[0015] The outer box assembly comprises a hole arranged on one side of the circuit breaker box, a cover plate is arranged on the top of the circuit breaker box, and the cover plate is inserted into the surface of the circuit breaker box.

[0016] Further technical solutions, the pressing plate and the movable part are inserted into the hole.

[0017] Compared with the prior art, the circuit breaker opening and closing coil protection device has the following advantages:

[0018] The multiple coil protection assembly is arranged on the inner and outer sides of the coil, the protection effect of the coil is improved, and the problems of dust accumulation and overheating of the coil in the physical state are avoided; the bracket inserted into the coil has the effect of supporting the coil, and is relatively separated from the coil, so that the problem of local overheating caused by too tight winding of the coil is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1A structure schematic view of a circuit breaker opening and closing coil protection device is provided in the utility model.

[0020] Figure 2 An explosion view structure schematic view of a circuit breaker opening and closing coil protection device is provided in the utility model.

[0021] Figure 3 A longitudinal section structure schematic view of a circuit breaker opening and closing coil protection device is provided in the utility model.

[0022] Figure 4 A second section structure schematic view of a circuit breaker opening and closing coil protection device is provided in the utility model.

[0023] In the figure: 1, circuit breaker box; 2, multiple coil protection assembly; 3, opening and closing assembly; 4, bracket; 5, input end; 6, coil; 7, output end; 8, power connection ring; 9, circuit board; 10, copper strip; 11, rotating shaft; 12, pressing plate; 13, movable part; 14, rod; 15, copper sheet; 16, protective cover; 17, heat dissipation hole; 18, tripod; 19, hole site; 20, cover plate. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0025] Embodiment one: refer to Figure 1 - Figure 4 A circuit breaker opening and closing coil protection device, comprising a circuit breaker box 1, the circuit breaker box 1 is the external sleeve structure of the device, further comprising:

[0026] The multiple coil protection assembly 2 is provided with multiple protection devices, so that the coil 6 is maximally protected from damage. The multiple coil protection assembly 2 comprises a bracket 4 symmetrically arranged on both sides of the device, and the bracket 4 is a basic part for mounting the coil 6. The coil 6 is mounted on the surface of the bracket 4, and the coil 6 is a part for current flow. One side of the coil 6 is connected to an input end 5, and the input end 5 and an output end 7 are respectively parts for line access and output. The other end of the coil 6 is connected to the output end 7, and the bottom of the coil 6 is provided with an electrical connection ring 8, which is used to introduce the current in the coil 6 into the inside of a circuit board 9. One side of the electrical connection ring 8 is connected to the circuit board 9, and the surface of the circuit board 9 is connected to a copper strip 10. The copper strip 10 and the notch in the copper strip 10 are used for subsequent on-off circuit connection. The middle part of the copper strip 10 is provided with a notch, and the outside of the coil 6 is covered with a protective cover 16, which has a rigid protection effect. The surface of the protective cover 16 is uniformly provided with heat dissipation holes 17 for dissipating heat generated on the surface of the coil 6, thereby avoiding overheating.

[0027] The circuit breaker opening and closing coil protection device further comprises a bracket 4, and the bracket 4 is a supporting component of the device.

[0028] The circuit breaker opening and closing coil protection device further comprises:

[0029] The opening and closing assembly 3 is a component for realizing on-off of the circuit. The opening and closing assembly 3 comprises a rotating shaft 11 rotatably mounted in the bracket 4, and the rotating shaft 11 can rotate in the bracket 4. One side of the rotating shaft 11 is connected to a pressing plate 12, and the pressing plate 12 and an interactive part 13 are components for pressing and controlling the pressing plate 12. One side of the pressing plate 12 is provided with the interactive part 13, one side of the pressing plate 12 is provided with a rod 14, and a copper sheet 15 provided on the rod 14 can realize the effect of power-on once connected to the notch part of the copper strip 10. One side of the rod 14 is provided with the copper sheet 15.

[0030] The circuit breaker opening and closing coil protection device, the size of the notch in the copper strip 10 is consistent with the size of the copper sheet 15, so that the copper sheet 15 can be easily connected to the notch in the copper strip 10 during connection.

[0031] The circuit breaker opening and closing coil protection device, the rotating shaft 11 is connected to the bracket 4, and the bracket 4 is a supporting component of the device.

[0032] The circuit breaker opening and closing coil protection device further comprises:

[0033] The outer box assembly comprises a hole position 19 arranged at one side of the circuit breaker box 1, and the hole position 19 is a mounting position of the pressing component. A cover plate 20 is mounted on the top of the circuit breaker box 1, and the cover plate 20 is interactively inserted into the surface of the circuit breaker box 1.

[0034] The circuit breaker on-off coil protection device is provided with a pressing plate 12 and a movable part 13 which are inserted into the hole position 19 and used for realizing pressing and dialing of the switch.

[0035] Working principle:

[0036] In the actual creation process of the utility model, in order to avoid the following defects existing in the prior art: the prior art adopts the mode of a control circuit to protect the coil from burning, but the coil of the circuit breaker lacks a corresponding protection device in the process of physical installation, even if the circuit control reduces the burning risk of the line coil, the self-burning phenomenon of the coil caused by physical reasons such as overheating, dust accumulation and short circuit cannot be avoided, and therefore the utility model needs to be improved. The on-off assembly 3 and the multiple coil protection assembly 2 are specifically proposed.

[0037] Firstly, how the on-off assembly realizes the on-off of the circuit is introduced, the coils 6 wound on the brackets 4 on both sides are connected to the input end 5 and the output end 7 of the circuit respectively, and the other ends of the coils 6 are connected to the surface of the circuit board 9 through wires; the end of the circuit is connected by the copper strip 10, and a circuit breaking space is opened in the middle part of the copper strip 10, thereby providing a premise for the subsequent on-off. When the circuit needs to be connected, the movable part 13 is dialled, so that the copper sheet 15 at the end of the rod 14 is connected to the circuit breaking part of the copper strip 10. The copper strip 10 realizes the connection of the input end 5 and the output end 7 in the connected state. Therefore, the device indirectly realizes the on-off effect of the circuit.

[0038] In order to protect the coil 6, firstly, the bracket 4 is arranged at the positioning and mounting position of the coil 6, the bracket 4 is used for simulating the winding path of the coil 6 and supporting the coil 6, so as to avoid overheating of the coil 6 in the process of power transmission. Secondly, the protective cover 16 is sleeved and mounted on the surface of the coil 6, the protective cover 16 can directly protect the internal coil 6 from impact, and the uniformly arranged heat dissipation holes 17 on the surface of the protective cover 16 can increase the heat dissipation effect of the coil 6.

[0039] It is to be noted that, in the present text, the relative terms such as first and second, and the like are used only to distinguish one entity or operation from another entity or operation without necessarily requiring or implying any such actual relationship or order between such entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. The above description is only the preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art, according to the technical solution and the inventive concept of the present application, can make equivalent replacements or changes within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A circuit breaker opening and closing coil protection device, comprising a circuit breaker box (1), characterized in that: Also includes: A multiple coil protection assembly (2) includes brackets (4) symmetrically arranged on both sides of the device, a coil (6) is wound and installed on the surface of the bracket (4), an input end (5) is docked and installed on one side of the coil (6), and an output end (7) is docked and installed on one end of the coil (6) on the other side, a power ring (8) is provided at the bottom of the coil (6), a circuit board (9) is docked and installed on one side of the power ring (8), a copper strip (10) is installed on the surface of the circuit board (9) in contact with the power ring (8), a notch is provided in the middle of the copper strip (10), a protective cover (16) is installed on the outside of the coil (6), and heat dissipation holes (17) are evenly provided on the surface of the protective cover (16).

2. A circuit breaker opening and closing coil protection device according to claim 1, characterized in that: A tripod (18) is fixedly mounted on the bottom of the bracket (4).

3. A circuit breaker opening and closing coil protection device according to claim 1, characterized in that: Also includes: A switch-on / off assembly (3) is provided, wherein the switch-on / off assembly (3) comprises a rotating shaft (11) rotatably mounted inside a bracket (4), a pressing plate (12) is butt-jointedly mounted on one side of the rotating shaft (11), a movable portion (13) is provided on one side of the pressing plate (12), a rod (14) is provided on one side of the pressing plate (12), and a copper sheet (15) is provided on one side of the rod (14).

4. A circuit breaker opening and closing coil protection device according to claim 3, characterized in that: The sizes of the gaps in the middle of the copper sheet (15) and the copper strip (10) are consistent.

5. A circuit breaker opening and closing coil protection device according to claim 3, characterized in that: A bearing is installed at the portion where the rotating shaft (11) and the bracket (4) are docked and installed, and a lubricating material is applied inside the bearing, and the lubricating material is a non-conductive material.

6. A circuit breaker opening and closing coil protection device according to claim 3, characterized in that: Also includes: An outer box assembly comprises a hole (19) arranged on one side of a circuit breaker box (1); a cover plate (20) is installed on the top of the circuit breaker box (1); and the cover plate (20) is interactively plugged into the surface of the circuit breaker box (1).

7. A circuit breaker opening and closing coil protection device according to claim 6, characterized in that: The pressing plate (12) and the movable part (13) are plugged into the interior of the hole (19).

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