Direct-current circuit breaker

Abstract

The utility model discloses a DC circuit breaker comprising a first body and a second body. The first body and the second body are both provided with busbar connecting holes. The busbar connecting hole is connected with the first body and the second body through a protective cover so as to cover the busbar connecting hole; the protection cover is further provided with an insertion hole facilitating insertion of a busbar, and after the protection cover is connected with the first body and the second body, the protection cover is completely attached to the lower portion of the first body and the lower portion of the second body. When one end of the busbar passes through the protective cover and then is connected with the wiring terminal, the protective cover can be utilized to protect the busbar from external physical damage, such as collision, scraping and the like. Meanwhile, the electrical insulation performance is enhanced, and the risks of electric leakage and short circuit are reduced; in addition, dust, water and the like can be prevented from entering the busbar to affect normal work and service life of the busbar. Especially, the device has a safety isolation performance, can prevent people from directly contacting the busbar, reduces the risk of electric shock, and guarantees the personal safety.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical switches, in particular to a DC circuit breaker. Background Technique

[0002] Through retrieval, it is found that in the prior art, such as the prior art with the publication number of CN206116306U, although the protective cover is also covered under the circuit breaker body, when the protective cover is connected to the circuit breaker body, both sides of it need to protrude outside the circuit breaker body; however, for small circuit breakers, usually multiple groups of circuit breakers are connected together; if there are protruding parts, when two circuit breaker bodies are connected and then another circuit breaker body is assembled, it will inevitably cause gaps between the circuit breaker bodies (that is, there is no gap between 1P and 2P, when assembling 3P, there will surely be a gap between the opposite surfaces of 3P and 2P); based on this, due to the existence of the gap, on the one hand, it will cause the gap between the circuit breaker bodies to expand; on the other hand, due to the gap, dust is likely to enter the equipment interior from the gap. Content of the Utility Model

[0003] The purpose of the utility model is to provide a DC circuit breaker to solve the problems raised in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solution: a DC circuit breaker, including a first body and a second body; both the first body and the second body are provided with busbar connection holes, and are connected to the first body and the second body through a provided protective cover to cover the busbar connection holes; the protective cover is also provided with an insertion hole for the busbar to penetrate, and after the protective cover is connected to the first body and the second body, the protective cover completely fits under the first body and the second body.

[0005] As a preferred technical solution of the utility model: one side of the protective cover is provided with a first buckle that is adaptively connected to a first buckle hole provided on the first body, and the other side of the protective cover is also provided with a second buckle, and the second buckle is buckled into the busbar connection hole.

[0006] As a preferred technical solution of the utility model: the protective cover is also provided with a third buckle, and the third buckle is adaptively connected to a second buckle hole provided on the second body.

[0007] As a preferred technical solution of the utility model: the first body and the second body form an insertion hole on one side of the busbar connection hole, and are adaptively connected to the insertion hole through a plug provided on the protective cover.

[0008] As a preferred technical solution of the present utility model: The bolt is arranged exactly in the middle of the first buckle and the third buckle.

[0009] As a preferred technical solution of the present utility model: On the side of the first body and the second body facing the protective cover, there are also slots, and the protective cover is adaptively connected to the slots through the provided connecting pins.

[0010] As a preferred technical solution of the present utility model: The protective cover is in a plate shape and is attached directly below the first body and the second body.

[0011] By adopting the above technical solution, the beneficial effects of the present utility model are as follows: When one end of the busbar passes through the protective cover and is connected to the terminal block, the protective cover can be used to protect the busbar from external physical damage, such as collision, scratching, etc. At the same time, it enhances the electrical insulation performance and reduces the risk of electric leakage and short circuit; in addition, it can also prevent dust, moisture, etc. from entering the busbar, affecting its normal operation and service life, and also has a safety isolation performance, which can prevent personnel from directly contacting the busbar, reduce the risk of electric shock, and ensure personal safety; in particular, after the protective cover is connected to the two bodies, it is completely attached directly below the two bodies, so that there is no protruding part after the protective cover is installed, effectively solving the problem of gaps existing after the combination of multiple bodies. Description of the Drawings

[0012] Figure 1 is a schematic diagram of the main structure of the present utility model;

[0013] Figure 2 is Figure 1 a partial enlarged schematic diagram of part A in

[0014] Figure 3 is a schematic diagram of the main structure of the protective cover of the present utility model.

[0015] In the figure: 1, the first body; 2, the second body; 3, the protective cover; 31, the bolt; 32, the connecting pin; 33, the first buckle; 34, the second buckle; 35, the insertion hole; 36, the third buckle; 4, the first buckle hole; 5, the second buckle hole; 6, the busbar connection hole; 7, the jack; 8, the slot. Detailed Embodiments

[0016] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as limiting the present utility model. In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "front", "upper surface", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

[0017] Please refer to Figures 1 - 3 , an embodiment provided by the present utility model: a DC circuit breaker, including a first body 1 and a second body 2; busbar connection holes 6 are provided on both the first body 1 and the second body 2, and are connected to the first body 1 and the second body 2 through a provided protective cover 3 to cover the busbar connection holes 6; an insertion hole 35 for facilitating the insertion of the busbar is further provided on the protective cover 3, and after the protective cover 3 is connected to the first body 1 and the second body 2, the protective cover 3 is completely attached to the directly below of the first body 1 and the second body 2.

[0018] In summary, the setting of the protective cover has the following functions, namely: protective function: protecting the busbar from external physical damage, such as collision, scratching, etc. Insulating function: enhancing the electrical insulation performance and reducing the risk of electric leakage and short circuit. Dust and moisture protection: preventing dust, moisture, etc. from entering the busbar and affecting its normal operation and service life. Anti-corrosion: resisting corrosive substances in the external environment and protecting the busbar from being corroded. Safety isolation: avoiding direct contact between personnel and the busbar, reducing the risk of electric shock, and ensuring personal safety. Reducing electromagnetic interference: reducing the impact of electromagnetic radiation generated by the busbar on the outside world to a certain extent, and at the same time reducing the impact of external electromagnetic interference on the busbar.

[0019] In particular: after the protective cover is connected to the two bodies, it is completely attached to the directly below of the two bodies, so that there is no protruding part after the protective cover is installed, effectively solving the problem of gaps existing after multiple bodies are combined.

[0020] In addition, the insertion hole 35 is set as a waist-shaped groove, so it provides enough space for the insertion of the busbar, and at the same time can avoid direct contact between the protective cover 3 and the busbar.

[0021] To improve the stability of the protective cover 3 after installation, a first buckle 33 is provided on one side of the protective cover 3 and is adaptively connected to a first buckle hole 4 provided on the first body 1. Further, a second buckle 34 is provided on the other side of the protective cover 3, and the second buckle 34 is buckled into the bus bar connection hole 6. Further, a third buckle 36 is also provided on the protective cover 3, and the third buckle 36 is adaptively connected to a second buckle hole 5 provided on the second body 2.

[0022] In summary, by using multiple buckles to buckle under the two bodies, on the one hand, the installation of the protective cover 3 is simple and convenient; on the other hand, the stability of the connection between the protective cover 3 and the two bodies is improved; in addition, after the protective cover 3 is connected to the two bodies, it can also play a role in positioning the two bodies and prevent the phenomenon of gaps between the two bodies.

[0023] To improve the convenience of assembling the protective cover 3, that is, to enable the protective cover 3 to be smoothly inserted onto the two bodies; a jack 7 is formed on one side of the bus bar connection hole 6 of the first body 1 and the second body 2, and the protective cover 3 is adaptively connected to the jack 7 through a plug pin 31 provided on the protective cover 3. Further, the plug pin 31 is provided exactly in the middle between the first buckle 33 and the third buckle 36.

[0024] In summary, when the plug pin 31 is aligned with the jack 7, the preliminary positioning of the protective cover 3 can be achieved. As the plug pin 31 continues to be inserted, the protective cover 3 can be smoothly connected to the two bodies.

[0025] On the basis of the above solution, since a slot 8 is further provided on the surfaces of the first body 1 and the second body 2 facing the protective cover 3, and the protective cover 3 is adaptively connected to the slot 8 through a connecting pin 32 provided thereon, therefore, by connecting the connecting pins 32 on both sides of the protective cover 3 to the slot 8, while improving the smooth assembly of the protective cover 3, the stability of the connection between the two bodies can be further improved.

[0026] In addition, since the protective cover 3 is in a plate shape and is attached directly below the first body 1 and the second body 2, therefore, while achieving the above effects, the space occupied by the protective cover 3 below the two bodies can be effectively reduced. Thus, after the protective cover 3 is installed, the bottom of the circuit breaker is relatively tidy, and the bottom will not extend downward excessively, resulting in insufficient installation space for the bus bar and inconvenient installation.

[0027] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, without departing from the principle and spirit of the present invention, various changes, modifications, substitutions, and variations to these embodiments still fall within the protection scope of the present invention.

Claims

1. A DC circuit breaker, characterized in that: The invention comprises a first body (1) and a second body (2); the first body (1) and the second body (2) are both provided with a busbar connection hole (6), and are connected to the first body (1) and the second body (2) via a protective cover (3) to cover the busbar connection hole (6); The protective cover (3) is also provided with an insertion hole (35) for facilitating the insertion of the busbar, and after the protective cover (3) is connected to the first body (1) and the second body (2), the protective cover (3) is completely fitted directly below the first body (1) and the second body (2).

2. A DC circuit breaker according to claim 1, characterized in that: A first buckle (33) is provided on one side of the protective cover (3) and is adapted to be connected with a first buckle hole (4) provided on the first body (1), and a second buckle (34) is provided on the other side of the protective cover (3) and is buckled into the bus connection hole (6) via the second buckle (34).

3. A DC circuit breaker according to claim 2, characterized in that: The protective cover (3) is also provided with a third buckle (36), and the third buckle (36) is adaptively connected to a second buckle hole (5) provided on the second body (2).

4. A DC circuit breaker according to claim 3, characterized in that: The first body (1) and the second body (2) are formed with a plug hole (7) on one side of the busbar connection hole (6), and are adaptively connected to the plug hole (7) via a plug pin (31) provided on the protective cover (3).

5. A DC circuit breaker according to claim 4, characterized in that: The latch pin (31) is arranged in the middle of the first buckle (33) and the third buckle (36).

6. A DC circuit breaker according to any one of claims 1 to 5, characterized in that: A slot (8) is also provided on one side of the first body (1) and the second body (2) facing the protective cover (3), and the protective cover (3) is adaptively connected to the slot (8) via a connecting pin (32).

7. A DC circuit breaker according to claim 6, characterized in that: The protective cover (3) is in the shape of a plate and is attached directly below the first body (1) and the second body (2).

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