Circuit breaker with disposable separator plate

Abstract

A circuit breaker with a disposable partition plate comprises a shell, the shell is provided with a wire inlet end and a wire outlet end, the wire inlet end is provided with a wiring port, and a busbar interface is arranged above the wiring port; and the partition plate is arranged to block the busbar interface, and the partition plate and the shell are connected through a thin plate which can be broken. The separator plates comprise a first separator plate which is arranged on the same plane with the wire inlet end and a second separator plate which is arranged vertical to the first separator plate. According to the application, the busbar interface is reserved, the partition plate capable of being broken is arranged in the busbar interface, when the busbar interface does not need to be used, the partition plate blocks the busbar interface to avoid insertion of foreign matters, when the busbar interface needs to be used, the partition plate is directly broken to expose the busbar interface, and compared with a mode of adopting a blocking piece, the busbar interface is not required to be used; and the cost is low.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical appliances, specifically to a circuit breaker with a disposable partition. Background Technology

[0002] A circuit breaker is a switching device capable of closing, carrying, and interrupting current under normal circuit conditions, and capable of closing, carrying, and interrupting current under abnormal circuit conditions (including short-circuit conditions) within a specified time. Circuit breakers are used to distribute electrical energy, infrequently start asynchronous motors, and protect power lines and motors. They automatically disconnect the circuit when serious overloads, short circuits, or undervoltage faults occur, functioning similarly to a combination of a fuse switch and over / under-temperature relays. Furthermore, generally no parts need to be replaced after interrupting a fault current.

[0003] As shown in Chinese Patent CN 221708647 U, a circuit breaker with a protective cover is disclosed. Some circuit breakers are equipped with additional busbar connection ports for connecting different busbars. However, most circuit breakers directly expose the busbar connection port. This exposed design leads to safety hazards. First, the exposed opening design allows foreign objects to enter through it, potentially causing dangerous accidents. Second, the electric arc generated during opening and closing may also be discharged through it, causing safety accidents.

[0004] Furthermore, for some circuit breakers that do not require busbar connection ports, the extra opening leads to a waste of that space. In order to block the busbar connection port, some circuit breakers need to install additional sealing parts, which increases costs. For some circuit breakers that do not have such busbar connection ports, when the busbar connection port is needed later, the product needs to be replaced, resulting in waste. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a circuit breaker with a disposable partition.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A circuit breaker with a disposable partition, comprising:

[0008] The housing has an inlet end and an outlet end. The inlet end has a wiring port, and a bus interface is provided above the wiring port.

[0009] A partition is provided to block the busbar interface, and the partition is connected to the housing by a breakable thin plate.

[0010] The partition includes a first partition disposed on the same plane as the incoming line end and a second partition disposed perpendicular to the first partition.

[0011] The partition is a flat plate, and the thin plate connects the flat plate and the shell, and the thickness of the thin plate is less than the thickness of the partition.

[0012] A breakage groove is provided on either side of the thin plate.

[0013] A gap is provided at the connection between the first partition and the second partition.

[0014] The housing is composed of a first housing and a second housing joined together. A terminal block is provided at the wiring port. The terminal block includes a wiring frame, a fixing screw, and a wiring plate disposed in the wiring frame. A protrusion is provided on the side of the first housing and the second housing that contacts the wiring frame. The protrusion contacts the outer wall of the wiring frame when the first housing and the second housing are joined together.

[0015] The wiring frame is provided with guide grooves on both sides.

[0016] The first housing and the second housing are respectively provided with guide blocks that are adapted to the guide groove.

[0017] The two ends of the terminal block protrude outward to form lugs, which are placed in the guide groove.

[0018] The front end of the wiring frame is bent downward to form a rib, and a protective sleeve is provided on the rib.

[0019] The beneficial effects of this utility model are as follows: This application reserves a bus interface and sets a breakable partition inside the bus interface. When the bus interface is not needed, the partition blocks the bus interface to prevent foreign objects from being inserted. When the bus interface needs to be used, the partition can be broken directly to expose the bus interface. Compared with the method of using a sealing component, it is low in cost. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is an enlarged schematic diagram of the busbar interface of this utility model.

[0022] Figure 3 This is a schematic diagram of the structure of the first housing of this utility model.

[0023] Figure 4 This is a cross-sectional view of the wiring terminal of this utility model.

[0024] Figure 5 This is a schematic diagram of the internal structure of this utility model.

[0025] Figure 6 This is a partial schematic diagram of the first housing of this utility model.

[0026] Figure 7 This is a schematic diagram of the structure of the wiring terminal of this utility model. Detailed Implementation

[0027] 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, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0029] As shown in the figure, this utility model provides a circuit breaker with a disposable partition. The circuit breaker has two interfaces at the inlet end: a conventional wiring port 130 and a busbar interface 140. In order to meet the needs of users who do not need to use the busbar interface, a disposable partition is set at the busbar interface 140. The partition itself is easily connected to the housing, that is, the connection between the partition and the housing can be broken by prying or bending, thereby exposing the busbar interface. When the busbar interface is not needed, the partition ensures that the busbar interface is not easily operated by mistake.

[0030] The housing 100 includes a first housing and a second housing arranged on the left and right sides, which cooperate with each other to form a complete housing. The housing has an inlet terminal 120 and an outlet terminal 110. The inlet terminal 120 has a wiring port 130, which is the same as the wiring port of a conventional circuit breaker, including a wiring frame and a fixing screw that cooperates with the wiring frame. The wiring frame has a wiring plate, which is C-shaped. One end of the wiring plate is placed inside the wiring frame, and the other end is located above the wiring frame and is linked with the fixing screw, so that the upper end of the wiring plate is located at the busbar interface. Above the wiring port 130, there is a busbar interface 140, which is used for the busbar to be inserted and connected to the wiring plate.

[0031] A partition 200 is provided to block the busbar interface 140, and the partition 200 is connected to the housing 100 by a breakable thin plate 230. The thickness of the thin plate is less than the thickness of the partition, and its thickness is such that the user can use tools or manually bend it to break it, thereby detaching the connection between the partition and the housing.

[0032] The preferred thin plate should be small in size to minimize the distance between the partition and the shell, and its thickness should also be as thin as possible to make it easier to break.

[0033] The partition 200 includes a first partition 220 disposed on the same plane as the inlet end 120 and a second partition 210 disposed perpendicular to the first partition 220. In this embodiment, a three-sided sealing method is adopted, which can meet the installation requirements of different busbars. By breaking the middle first partition, only the busbar interface on the surface of the inlet end is exposed, or by breaking the second partitions located on both sides of the inlet end, the side busbar interfaces are exposed, or all three are broken to expose a larger busbar interface. It can realize the selection of busbar interfaces of different positions and sizes according to different busbars.

[0034] The partition 200 is a flat plate, and the thin plate 230 connects the flat plate and the housing 100. The thickness of the thin plate 230 is less than the thickness of the partition 200. The thickness of the thin plate is half the thickness of the partition, which reduces the thickness of the connection between the two as much as possible. This makes the thin plate easy to break when under force, and when not under force, it can maintain the connection between the partition and the housing, thus playing the role of sealing the busbar interface.

[0035] The thin plate 230 is provided with a breakable groove 240 on any side. The design of the breakable groove reduces the thickness of the thin plate, making it easier to break under force. In some embodiments, a V-shaped groove can be used to make the size of the connection between the two smaller. In this embodiment, a flat-bottomed groove is used to make the connection more reliable. The connection between the two can be damaged and broken only when prying with a tool, thus making the sealing effect of the partition reliable. The size of the thin plate is limited by the amount of force required to break it, so its size can be changed according to the needs.

[0036] The breaking grooves 240 are symmetrically arranged on both sides of the thin plate 230. The arrangement on both sides makes the thin plate thinner and easier to break.

[0037] A gap 250 is provided at the connection between the first partition 220 and the second partition 210. The gap is designed to separate the first partition and the second partition into two parts. By breaking or prying off either partition, the busbar interface at different positions can be exposed. The gap is also designed to facilitate the insertion of a tool into the gap to break the connection between the partition and the housing.

[0038] The housing 100 is constructed by splicing a first housing and a second housing. A terminal block 300 is provided at the wiring port 130. The terminal block 300 includes a wiring frame 320, a fixing screw 310, and a wiring plate 330 disposed within the wiring frame 320. A protrusion 150 is provided on the side of the first and second housings that contacts the wiring frame 320. The protrusion 150 contacts the outer wall of the wiring frame 320 when the first and second housings are spliced. During assembly, the protrusion 150, due to the cooperation of the two housings and its contact with the outer wall of the wiring frame, effectively restricts the wiring frame. During transportation, normal vibrations will not cause the fixing screw to move the wiring frame up and down, ensuring the wiring frame remains aligned with the wiring port for easy subsequent wiring. Furthermore, the friction between the protrusion and the wiring frame is less than the force exerted directly on the fixing screw; that is, tightening the fixing screw will cause the wiring frame to move upwards against friction, thus securing the incoming wire.

[0039] The protrusions are set on the reinforcing ribs formed on the inner wall of the housing, thereby increasing its strength and allowing it to be closer to the wiring frame. There are two protrusions on the first housing or the second housing, which are symmetrically arranged, so that the force on both sides of the wiring frame is even.

[0040] The wiring frame 320 has guide grooves 321 on both sides. The design of the guide grooves reduces the cost of the wiring frame.

[0041] Meanwhile, the first housing and the second housing are respectively provided with guide blocks 160 that are adapted to the guide groove 321. The guide blocks cooperate with the guide groove to restrict the wiring frame, thereby enabling it to move better along a straight line and ensuring the reliability of the wiring.

[0042] The two ends of the terminal block 330 protrude outward to form lugs 331. The lugs 331 are placed in the guide groove 321. The design of the lugs on the terminal block makes the terminal block move in a straight line relative to the terminal frame, and there will be no shaking.

[0043] The front end of the wiring frame 320 is bent downwards to form a rib, and a protective sleeve 340 is provided over the rib. When the wiring frame is raised by the fixing screw, the protective sleeve is moved upwards synchronously by the wiring frame, thereby sealing the wiring port and ensuring that no foreign objects will enter the housing. At the same time, in order to avoid the protective sleeve, a groove is preferably provided in the housing below the wiring terminal. When the wiring frame is aligned with the wiring port, the protective sleeve is housed in the groove and will not affect the normal use of the entire wiring terminal.

[0044] The embodiments should not be regarded 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 circuit breaker with a disposable partition, characterized in that: It includes: The housing (100) is provided with an inlet end (120) and an outlet end (110). The inlet end (120) is provided with a wiring port (130), and a bus interface (140) is provided above the wiring port (130). A partition (200) is provided to block the busbar interface (140), and the partition (200) is connected to the housing (100) by a breakable thin plate (230).

2. A circuit breaker with a disposable partition according to claim 1, characterized in that: The partition (200) includes a first partition (220) disposed on the same plane as the inlet end (120) and a second partition (210) disposed perpendicular to the first partition (220).

3. A circuit breaker with a disposable partition according to claim 1 or 2, characterized in that: The partition (200) is a flat plate, and the thin plate (230) connects the flat plate and the housing (100), and the thickness of the thin plate (230) is less than the thickness of the partition (200).

4. A circuit breaker with a disposable partition according to claim 3, characterized in that: A breakage groove (240) is provided on either side of the thin plate (230).

5. A circuit breaker with a disposable partition according to claim 2, characterized in that: A gap (250) is provided at the connection between the first partition (220) and the second partition (210).

6. A circuit breaker with a disposable partition according to claim 1, characterized in that: The housing (100) is formed by splicing a first housing and a second housing. A terminal block (300) is provided at the wiring port (130). The terminal block (300) includes a wiring frame (320), a fixing screw (310), and a wiring plate (330) disposed in the wiring frame (320). A protrusion (150) is provided on the side of the first housing and the second housing that contacts the wiring frame (320). The protrusion (150) contacts the outer wall of the wiring frame (320) when the first housing and the second housing are spliced.

7. A circuit breaker with a disposable partition according to claim 6, characterized in that: The wiring frame (320) is provided with guide grooves (321) on both sides.

8. A circuit breaker with a disposable partition according to claim 7, characterized in that: The first housing and the second housing are respectively provided with guide blocks (160) that are adapted to the guide groove (321).

9. A circuit breaker with a disposable partition according to claim 7, characterized in that: The two ends of the terminal block (330) protrude outward to form lugs (331), and the lugs (331) are placed in the guide groove (321).

10. A circuit breaker with a disposable partition according to claim 6, characterized in that: The front end of the wiring frame (320) is bent downward to form a rib, and a protective sleeve (340) is provided on the outer sleeve of the rib.

Images