Circuit breaker convenient for wiring

Abstract

The utility model relates to a circuit breaker convenient for wiring. The circuit breaker comprises a circuit breaker housing, a wiring seat, a wiring elastic sheet and a wiring push rod. The shell is provided with a wiring hole, a wiring seat is arranged in the shell, and a wiring elastic piece and a wiring push rod are arranged in the wiring seat. The outer side of the wiring push rod is provided with a limiting head, and the side wall of the wiring seat is provided with a corresponding side wall gap and a limiting gap on the inner side limiting convex ring. During wiring, a wire is placed between the wiring seat and the wiring elastic sheet, the limiting head and the side wall gap are aligned to push the push rod, and the elastic sheet is pressed to deform; after pushing, the wiring push rod is rotated to enable the limiting head and the side wall gap to be staggered and clamped into the limiting gap, and after loosening, the wiring elastic sheet rebounds, the electric wire is pressed, and the wiring push rod is locked. During disassembly, the wiring push rod is pushed inwards, so that the limiting head is separated from the limiting gap, and is pulled out after being reversely rotated to be aligned with the side wall gap. The structure is rapid in wiring and anti-loosening, reliable connection and locking are completed through two steps of pushing-in and rotating, and operation is simple and convenient.

Description

Technical Field

[0001] This utility model relates to the field of power equipment technology, and in particular to a circuit breaker that is easy to wire. Background Technology

[0002] A circuit breaker is an automatic switching device used to protect electrical circuits from damage caused by faults such as overloads and short circuits. It is widely used in power systems, industrial equipment, and household electricity, and its main function is to automatically cut off current in abnormal situations to prevent equipment damage or fire risks.

[0003] In existing technology, the wiring structure of most circuit breakers consists of fastening screws, a terminal block, and a terminal socket. Both the terminal block and the terminal socket are threaded onto the fastening screws. The wiring of the circuit breaker is achieved by rotating the fastening screws, which move the terminal block and terminal socket closer together. However, this wiring structure carries the risk of insecure connections and is inconvenient to install. Utility Model Content

[0004] This utility model provides a circuit breaker that is easy to wire, aiming to solve the problems of inconvenient installation and loose wiring in the wiring structure of existing circuit breakers.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This utility model embodiment provides a circuit breaker that is easy to wire, including:

[0007] The circuit breaker housing has mounting holes.

[0008] A wiring assembly, comprising a terminal block, a wiring spring, and a wiring push rod; the terminal block is disposed within the mounting hole, and the wiring spring is disposed within the terminal block;

[0009] One end of the terminal block is provided with a wiring hole, and a number of limiting heads are provided in the circumferential direction on the outer side wall of the wiring push rod. The side wall of the wiring hole is provided with a side wall notch that cooperates with the limiting heads.

[0010] In one embodiment, the sidewall of the wiring hole is provided with two sidewall notches, and the line connecting the two sidewall notches passes through the center of the wiring hole;

[0011] The outer wall of the wiring push rod is provided with two limiting heads that cooperate with the two side wall notches.

[0012] In one embodiment, a limiting protrusion is provided on the circumference of the wiring hole near the inner side of the terminal block, and the limiting protrusion is provided with two limiting notches, the line connecting the two limiting notches passing through the center of the wiring hole.

[0013] In one embodiment, the line connecting the two limiting notches is perpendicular to the line connecting the two sidewall notches.

[0014] In one embodiment, the wiring spring includes two parallel first pressure plates and a second pressure plate, one end of which is connected by a connecting plate;

[0015] The first pressure plate, the second pressure plate, and the connecting plate cooperate to form a spring clip opening;

[0016] The wiring push rod abuts against the first pressure plate.

[0017] In one embodiment, the opening of the spring tab is aligned with the opening direction of the mounting hole.

[0018] In one embodiment, the end of the first pressure plate away from the connecting plate is provided with a guide bevel facing the second pressure plate; the connection between the guide bevel and the second pressure plate is provided with a chamfered edge.

[0019] In one embodiment, the second pressure plate has a plurality of pressure line protrusions on the side end face away from the first pressure plate.

[0020] The beneficial effects of this utility model compared with the prior art are as follows: When using this application, the wire is placed between the terminal block and the connecting spring. Align the limiting head of the connecting push rod with the side wall notch, and push the connecting push rod into the wiring hole. The end of the connecting push rod presses against the connecting spring, causing the connecting spring to deform. After the limiting head is fully pushed into the terminal block, rotate the connecting push rod approximately ° to misalign the limiting head with the side wall notch and engage it in the limiting notch of the inner limiting protrusion ring. Then release the connecting push rod; the connecting spring springs back, pressing the wire firmly onto the terminal block and locking the connecting push rod to prevent it from coming out.

[0021] Therefore, this application requires only two actions—pushing in and rotating—to complete wiring and locking, significantly improving wiring efficiency. The wire is continuously pressed down by the wire spring, and the mechanical interlocking structure of the limit head and notch ensures a firm wire contact, preventing loosening due to vibration. It features easy installation and secure wiring.

[0022] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model, it can be implemented according to the contents of the specification. In order to make the above and other objects, features and advantages of this utility model more obvious and understandable, the following are preferred embodiments, which are described in detail below. Attached Figure Description

[0023] Figure 1 A three-dimensional structural diagram of a circuit breaker that facilitates wiring, provided for an embodiment of this utility model;

[0024] Figure 2 A partial structural diagram of a circuit breaker that facilitates wiring, provided for an embodiment of this utility model;

[0025] Figure 3 for Figure 2 A magnified view of a portion of the image;

[0026] Figure 4 An exploded view of the wiring assembly of a circuit breaker that facilitates wiring, provided for an embodiment of this utility model;

[0027] Figure 5 Another angle of explosion for a circuit breaker that facilitates wiring, provided by an embodiment of this utility model.

[0028] Figure label:

[0029] 1. Circuit breaker housing; 11. Mounting holes;

[0030] 2. Wiring components;

[0031] 3. Terminal block; 31. Wiring hole; 311. Side wall notch; 32. Limiting protrusion; 321. Limiting notch;

[0032] 4. Wiring spring, 41. First pressure plate, 42. Second pressure plate, 43. Connecting plate, 44. Guide edge, 45. Chamfered edge, 46. Wire pressing protrusion;

[0033] 5. Wiring push rod; 51. Limit head. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0035] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0036] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0037] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0038] Please see Figure 1-5 This utility model embodiment provides a circuit breaker that is easy to wire, comprising:

[0039] Circuit breaker housing 1, wherein mounting holes 11 are provided on the circuit breaker housing 1;

[0040] Wiring assembly 2, which includes a terminal block 3, a terminal spring 4, and a terminal push rod 5; the terminal block 3 is disposed in the mounting hole 11, and the terminal spring 4 is disposed in the terminal block 3;

[0041] One end of the terminal block 3 is provided with a wiring hole 31, and a plurality of limiting heads 51 are provided in the circumferential direction on the outer side wall of the wiring push rod 5. The side wall of the wiring hole 31 is provided with a side wall notch 311 that cooperates with the limiting head 51.

[0042] In use, the wire is first placed between the terminal block 3 and the connecting spring 4. Then, the limiting head 51 is aligned with the side wall notch 311, allowing the wire push rod 5 to pass through the wiring hole 31. As the wire push rod 5 enters the wiring hole 31, it acts on the connecting spring 4, causing it to deform. After the limiting head 51 passes through the side wall notch 311, it is positioned inside the terminal block 3. The wire push rod 5 is then rotated, causing the limiting head 51 and the side wall notch 311 to become misaligned. The wire push rod 5 is then released. Under the action of the connecting spring 4, the limiting head 51 is locked against the inner wall of the terminal block 3. Simultaneously, under the action of the connecting spring 4, the wire is pressed tightly between the terminal block 3 and the connecting spring 4. When the wire needs to be replaced, the above steps are repeated in reverse order: the wire push rod 5 is removed, and the wire is replaced. Therefore, this application eliminates the need for fastening screws, making it convenient to use and install, and maintaining a good wiring condition, thus reducing the likelihood of loose wiring.

[0043] In a further embodiment, the sidewall of the wiring hole 31 is provided with two sidewall notches 311, and the line connecting the two sidewall notches 311 passes through the center of the wiring hole 31.

[0044] The outer side wall of the wiring push rod 5 is provided with two limiting heads 51 that cooperate with the two side wall notches 311.

[0045] In this embodiment, two sidewall notches 311 are provided, and the line connecting the two sidewall notches 311 passes through the center of the wiring hole 31. Two limiting heads 51 are also provided accordingly, so that the limiting heads 51 can cooperate with the sidewall notches 311.

[0046] In a further embodiment, a limiting protrusion 32 is provided on the circumferential direction of the wiring hole 31 near the inner side of the terminal block 3. The limiting protrusion 32 is provided with two limiting notches 321, and the line connecting the two limiting notches 321 passes through the center of the wiring hole 31.

[0047] In this embodiment, two limiting notches 321 are provided so that when the limiting head 51 is stuck inside the terminal block 3, the limiting head 51 can be just stuck in the limiting notch 321 to prevent the wiring push rod 5 from rotating, thereby preventing the wiring push rod 5 from coming out of the wiring hole 31.

[0048] In a further embodiment, the line connecting the two limiting notches 321 is perpendicular to the line connecting the two sidewall notches 311.

[0049] In this embodiment, the lines connecting the two limiting notches 321 and the two side wall notches 311 are perpendicular, so that when the limiting head 51 is located inside the terminal block 3, the wiring push rod 590 degrees can be rotated so that the limiting head 51 corresponds exactly to the limiting notch 321. When it is necessary to remove the wiring push rod 5 from the wiring hole 31, first push the wiring push rod 5 into the terminal block 3 so that the limiting head 51 disengages from the limiting notch 321, then rotate the wiring push rod 590 degrees so that the limiting head 51 corresponds to the side wall notch 311, and the wiring push rod 5 can be withdrawn from the wiring hole 31.

[0050] In a further embodiment, the wiring spring 4 includes two parallel first pressure plates 41 and second pressure plates 42, one end of the first pressure plates 41 and the second pressure plates 42 being connected by a connecting plate 43.

[0051] The first pressure plate 41, the second pressure plate 42, and the connecting plate 43 cooperate to form a spring clip opening;

[0052] The wiring push rod 5 abuts against the first pressure plate 41.

[0053] In this embodiment, the connecting plate 43, the first pressure plate 41, and the second pressure plate 42 cooperate to form an elastic wire spring 4, which can generate a certain elastic deformation in the thickness direction of the first pressure plate 41 and the second pressure plate 42, so that the wire spring 4 is elastic.

[0054] In a further embodiment, the opening of the spring piece is aligned with the opening direction of the mounting hole 11.

[0055] The first pressure plate 41 has a guide edge 44 facing the second pressure plate 42 at one end away from the connecting plate 43; the guide edge 44 and the second pressure plate 42 are provided with a chamfered edge 45 at the connection point.

[0056] In this embodiment, the chamfered edge 45 at the connection position between the guide edge 44 and the second pressure plate 42 facilitates the insertion of the wire into the space between the second pressure plate 42 and the terminal block 3.

[0057] In a further embodiment, the second pressure plate 42 has a plurality of pressure line protrusions 46 on the side end face away from the first pressure plate 41.

[0058] In this embodiment, a wire pressing protrusion 46 is provided, which can better press the wire into the second pressure plate 42 and the terminal block 3, so that the wire can maintain good contact with the terminal block 3.

[0059] In this embodiment, the pressure ridge 46 is configured as several concentric arcs.

[0060] The working principle of this application is as follows: A wiring hole 31 is provided on the circuit breaker housing 1, and a terminal block 3, a wiring spring 4 (with a flexible double pressure plate structure) and a wiring push rod 5 are arranged inside. A limiting head 51 is provided on the outer side of the wiring push rod 5, and a side wall notch 311 that matches it is provided on the side wall of the terminal block 3. Specifically, it includes the following process:

[0061] (1) Wiring process: Place the wire between the terminal block 3 and the wire spring 4.

[0062] Align the limiting head 51 of the wiring push rod 5 with the side wall notch 311, push the wiring push rod 5 into the wiring hole 31, and the end of the wiring push rod 5 presses the wiring spring 4, causing the wiring spring 4 to deform.

[0063] After the limiting head 51 is fully pushed into the terminal block 3, rotate the terminal push rod 5 by about 90° to make the limiting head 51 misalign with the side wall notch 311 and get stuck in the limiting notch 321 of the inner limiting protrusion ring 32.

[0064] Then release the connector push rod 5, and the connector spring 4 will spring back, pressing the wire firmly onto the connector 3 on one hand, and locking the connector push rod 5 on the other hand to prevent it from coming out.

[0065] (2) Disassembly process: Push the wiring push rod 5 towards the inside of the terminal block 3 so that the limit head 51 is disengaged from the limit notch 321.

[0066] Then rotate the wiring push rod 5 in the opposite direction by about 90° so that the limit head 51 is realigned with the side wall notch 311.

[0067] Pull out connector push rod 5 to remove or replace the wire.

[0068] Compared with the prior art, this application has the following advantages:

[0069] (1) Fast wiring and easy operation: Wiring and locking can be completed with just two actions: pushing in and rotating, which greatly improves wiring efficiency.

[0070] (2) Reliable connection and anti-loosening: The wire is continuously pressed by the wire spring 4, and the mechanical interlocking structure of the limit head 51 and the notch ensures that the wire is firmly in contact and avoids loosening due to vibration.

[0071] (3) Compact structure and reasonable design: The double limit head 51 and the double side wall notch 311 are symmetrically arranged, the force is balanced, and the connection push rod 5 moves stably.

[0072] The limiting notch 321 and the side wall notch 311 are offset at 90°, forming a clear three-step operation of "push-turn-lock", which is logically clear and not easy to misoperate.

[0073] (4) Optimization of wire guidance and clamping: The wiring spring 4 is provided with a guide edge 44 and a chamfered edge 45 to facilitate wire insertion.

[0074] The second pressure plate 42 is provided with multiple arc-shaped pressure line protrusions 46, which increase the contact pressure and friction, and improve the conductivity reliability and pull-out resistance.

[0075] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A circuit breaker with convenient wiring, characterized by, The utility model relates to a circuit breaker, including: The circuit breaker shell is provided with mounting hole on; The wiring assembly includes wiring seat, wiring spring and wiring push rod, the wiring seat is arranged in the mounting hole, and the wiring spring is arranged in the wiring seat; One end of the wiring seat is provided with wiring hole, the outer side wall of the wiring push rod is provided with a plurality of limiting heads in the circumferential direction, and the side wall of the wiring hole is provided with a side wall notch matched with the limiting head.

2. The easy wiring circuit breaker of claim 1, wherein, The side wall of the wiring hole is provided with two side wall notches, and the line of the two side wall notches passes through the center of the wiring hole; The outer side wall of the wiring push rod is provided with two limiting heads matched with the two side wall notches.

3. The easy wiring circuit breaker of claim 2, wherein, The limiting convex ring is arranged in the circumferential direction close to the inner side of the wiring seat, and the limiting convex ring is provided with two limiting notches, and the line of the two limiting notches passes through the center of the wiring hole.

4. The easy wiring circuit breaker of claim 3, wherein, The line of the two limiting notches is perpendicular to the line of the two side wall notches.

5. The easy wiring circuit breaker according to any one of claims 1 to 4, characterized in that, The wiring spring includes two parallelly arranged first pressing plates and second pressing plates, and one end of the first pressing plate and the second pressing plate is connected through a connecting plate; The first pressing plate, the second pressing plate and the connecting plate cooperate to form a spring opening; The wiring push rod is in abutment with the first pressing plate.

6. The easy wiring circuit breaker of claim 5, wherein, The spring opening is consistent with the opening direction of the mounting hole.

7. The easy wiring circuit breaker of claim 6 wherein, The first pressing plate is provided with a guide flange towards the second pressing plate at one end away from the connecting plate, and a chamfered edge is arranged at the connecting portion of the guide flange and the second pressing plate.

8. The easy wiring circuit breaker of claim 5 wherein, The second pressing plate is provided with a plurality of pressing line convex ribs away from the one end surface of the first pressing plate.

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