Wiring terminal and circuit breaker

Abstract

The utility model relates to the technical field of low-voltage electric appliances, in particular to a wiring terminal and a circuit breaker, the wiring terminal comprises a terminal part and a fixing part, one end of the terminal part is of a tubular structure and allows an external connecting wire to be inserted into a tube hole of the terminal part, a through groove is formed in the circumferential wall of one end of the terminal part in the axial direction, and the through groove is communicated with the tube hole; the fixing part is used for being fixedly connected with the shell, and the other end of the terminal part is fixedly connected with the fixing part. The external connecting wire is inserted into the pipe hole, and then the terminal part is deformed through needle-nose pliers or special wiring pliers and the like, so that the external connecting wire is clamped by the terminal part, the fixation of the terminal part and the external connecting wire is realized, the looseness between the terminal part and the external connecting wire is avoided, and the frequent false tripping phenomenon caused by overheating is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage electrical appliances, in particular to a wiring terminal and a circuit breaker. Background Art

[0002] Miniature circuit breakers use an external handle to open and close the circuit, and use various unlocking methods to detect faults and disconnect the circuits affected by them. They usually have overcurrent protection. When an overcurrent occurs in the line, the operating structure is unlocked through instantaneous or overload devices to disconnect the circuit.

[0003] As the new energy industry continues to develop in a positive direction, the sales and usage of electric bicycles have shown a steady upward trend. Small circuit breakers serve as protection switches for current output during the operation of electric bicycles. They can cut off the output circuit of the battery to the motor when the electric bicycle is overloaded, protecting the motor from burning.

[0004] However, existing circuit breakers use threaded terminals, which are prone to loosening when electric vehicles are driving on bumpy roads. When the terminals are loose, the current will be overloaded. Because the current cannot pass through the circuit breaker normally, the thermal load of the equipment will be increased, causing unreliable connections and frequent false tripping due to overheating.

[0005] Therefore, there is an urgent need to improve the wiring terminals and circuit breakers to solve the above problems. Utility Model Content

[0006] The utility model aims to provide a wiring terminal and a circuit breaker to solve the problem that the connection between the wiring terminal and the external circuit is prone to loosening.

[0007] In one aspect, the utility model provides a wiring terminal, which comprises:

[0008] A terminal part, one end of which is in a tubular structure and allows an external connection line to be inserted into a tube hole of the terminal part, and a through groove is provided on a peripheral wall of one end of the terminal part along its axial direction, and the through groove is connected to the tube hole;

[0009] The fixing part is used to be fixedly connected to the housing, and the other end of the terminal part is fixedly connected to the fixing part.

[0010] As a preferred technical solution of the wiring terminal, the fixing portion includes a body, and clips are respectively provided on two opposite sides of the body, and the clips can be inserted into the clip holes provided in the shell.

[0011] As a preferred technical solution of the connecting terminal, a connecting plate is provided at the other end of the terminal portion, and the connecting plate is fixedly connected to the fixing portion.

[0012] As a preferred technical solution of the connecting terminal, the connecting plate and the terminal part are integrally formed.

[0013] As a preferred technical solution of the connecting terminal, the fixing portion is provided with a connecting plane, and the connecting plate is fitted and fixedly connected to the connecting plane of the fixing portion.

[0014] As a preferred technical solution of the connecting terminal, a plurality of anti-dropping protrusions are arranged on the wall of the tube hole.

[0015] As a preferred technical solution of the terminal block, the anti-slip protrusion is an annular protrusion arranged on the wall of the tube hole around the axis of the tube hole, and a plurality of the anti-slip protrusions are arranged at intervals along the axial direction of the tube hole.

[0016] As a preferred technical solution of the wiring terminal, the fixing portion is integrally formed.

[0017] On the other hand, the utility model provides a circuit breaker, comprising a shell and a terminal according to any of the above schemes, wherein the shell is provided with a accommodating cavity, one end of the terminal part is placed outside the shell, the fixing part is placed in the accommodating cavity, and a through hole is provided on the side wall of the accommodating cavity, and the other end of the terminal part passes through the through hole and is fixedly connected to the fixing part.

[0018] As a preferred technical solution for the circuit breaker, a clamping hole is provided on the cavity wall of the accommodating cavity, and the clamp on the fixing part is inserted into the clamping hole.

[0019] The beneficial effects of the utility model are:

[0020] The utility model provides a wiring terminal and a circuit breaker, the wiring terminal comprises a terminal part and a fixing part, one end of the terminal part is a tubular structure and allows an external connection line to be inserted into a tube hole of the terminal part, a through groove is arranged on the peripheral wall of one end of the terminal part along its axial direction, and the through groove is connected with the tube hole; the fixing part is used to be fixedly connected with a shell, and the other end of the terminal part is fixedly connected with the fixing part. The external connection line is inserted into the tube hole, and then the terminal part is deformed by needle-nosed pliers or special wiring pliers, so that the terminal part clamps the external connection line to achieve the fixation of the terminal part and the external connection line. This setting can prevent the circuit breaker from loosening between the terminal part and the external connection line in a vibration environment, and frequent false tripping caused by overheating.

[0021] Furthermore, since the fixing portion and the housing are relatively fixed, and the terminal portion is fixedly connected to the fixing portion, pulling of the terminal portion by the external connecting wire will not cause unstable connection between the terminal portion and the internal electrical components, thereby improving the working stability of the circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of a circuit breaker in an embodiment of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the first side shell in the embodiment of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the terminal part and the connecting plate in the embodiment of the utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the wiring terminal in the embodiment of the utility model;

[0026] Figure 5 It is a schematic diagram of the structure of the wiring terminal in the embodiment of the utility model.

[0027] In the figure:

[0028] 1. Terminal part; 11. Pipe hole; 12. Through slot;

[0029] 2. fixing part; 21. body; 22. clip;

[0030] 3. Connecting plate;

[0031] 41. first side shell; 42. clamping hole; 43. through hole; 44. accommodating cavity;

[0032] 5. Electromagnetic release. DETAILED DESCRIPTION

[0033] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", 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 therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0037] This embodiment provides a wiring terminal, such as Figures 1 to 5 As shown, the terminal comprises a terminal part 1 and a fixing part 2. One end of the terminal part 1 is in a tubular structure and allows an external connection line to be inserted into a tube hole 11 of the terminal part 1. A through groove 12 is provided on the peripheral wall of one end of the terminal part 1 along its axial direction, and the through groove 12 is connected with the tube hole 11. The fixing part 2 is used to be fixed to the housing, and the other end of the terminal part 1 is fixed to the fixing part 2. The external connection line is inserted into the tube hole 11, and then the terminal part 1 is deformed by a crimping tool such as a needle-nosed pliers or a special wiring pliers, so that the terminal part 1 clamps the external connection line to achieve the fixation of the terminal part 1 and the external connection line. This setting can prevent the terminal part 1 and the external connection line from loosening in a vibration environment, and prevent frequent false tripping caused by overheating.

[0038] Furthermore, since the fixing portion 2 is relatively fixed to the housing, and the terminal portion 1 is fixedly connected to the fixing portion 2, the pulling of the terminal portion 1 by the external connecting wire will not cause the unstable connection between the terminal portion 1 and the internal electrical components, thereby improving the working stability of the circuit breaker.

[0039] In order to further improve the stability of the connection between the terminal part 1 and the external connection line and prevent it from being loosened, a plurality of anti-slip protrusions are optionally provided on the wall of the tube hole 11. In this embodiment, the above arrangement can further improve the clamping force of the terminal part 1 on the external connection line, thereby preventing the external connection line from slipping out of the tube hole 11.

[0040] Specifically, the anti-slip protrusion is an annular protrusion arranged on the wall of the tube hole 11 around the axis of the tube hole 11 , and a plurality of anti-slip protrusions are arranged at intervals along the axial direction of the tube hole 11 .

[0041] Optionally, the housing is provided with two opposite clamping holes 42; the fixing portion 2 comprises a body 21 and two clamps 22, the two clamps 22 are respectively provided on opposite sides of the body 21, the body 21 is provided between the two clamping holes 42, and the two clamps 22 can be inserted into the corresponding two clamping holes 42 one by one. In this embodiment, the two clamps 22 are provided on the two opposite side walls of the body 21, and the two clamps 22 can be inserted into the corresponding two clamping holes 42 one by one, and this arrangement can ensure the relative fixation of the fixing portion 2 and the housing. In other embodiments, the fixing portion 2 and the housing can also be relatively fixed by means of adhesive or screw connection.

[0042] Optionally, the fixing portion 2 is arranged in the housing; the other end of the terminal portion 1 is provided with a connecting plate 3, one end of the connecting plate 3 is fixedly connected to the terminal portion 1 outside the housing, and the other end of the connecting plate 3 extends into the housing and is fixedly connected to the fixing portion 2. In this embodiment, the connecting plate 3 enables the fixing portion 2 in the housing and the terminal portion 1 outside the housing to be electrically connected.

[0043] Optionally, the connection plate 3 is integrally formed with the terminal portion 1. In this embodiment, this arrangement can improve the connection strength between the connection plate 3 and the terminal portion 1 on the one hand, and can reduce the manufacturing cost of the terminal block and improve the production efficiency of the terminal block on the other hand.

[0044] Optionally, the fixing portion 2 is provided with a connection plane, and the connection plate 3 is fitted and fixedly connected to the connection plane of the fixing portion 2. In this embodiment, this arrangement can increase the connection area between the fixing portion 2 and the connection plate 3, which can not only ensure the connection strength between the connection plate 3 and the fixing portion 2, but also reduce the resistance between the connection plate 3 and the fixing portion 2.

[0045] Optionally, the fixing portion 2 is used to electrically connect the terminal portion 1 to the electromagnetic release 5 in the housing. In this embodiment, the fixing portion 2 can not only play a role in relatively fixing the terminal portion 1 to the housing, but also play a role in electrically connecting the terminal portion 1 to the electromagnetic release 5 in the housing. This arrangement further reduces the production cost of the terminal block and improves the assembly efficiency of the terminal block.

[0046] Optionally, the fixing part 2 is integrally formed. In this embodiment, this arrangement can enhance the assembly accuracy of the two clips 22 and the body 21 and the overall strength of the fixing part 2.

[0047] like Figure 1 and 2 As shown, this embodiment also provides a circuit breaker, including a housing and the wiring terminal in the above scheme, the housing is provided with a housing cavity 44, one end of the terminal part 1 is placed outside the housing, the fixing part 2 is placed in the housing cavity 44, the side wall of the housing cavity 44 is provided with a through hole 43, the other end of the terminal part 1 is provided with a connecting plate 3, the connecting plate 3 passes through the through hole 43, and the connecting plate 3 is fixedly connected to the fixing part 2. In this embodiment, two connecting terminal structures are provided, and two opposite side surfaces of the housing are respectively provided with through holes 43, and the two connecting plates 3 of the two connecting terminal structures are respectively passed through the through holes 43. This setting arranges the terminal parts 1 of the two connecting terminal structures on two opposite side surfaces of the housing, thereby preventing mutual interference of external connecting wires.

[0048] Optionally, the housing includes a first side shell 41 and a second side shell, the first side shell 41 and the second side shell are fixedly connected to each other to enclose a receiving cavity 44, the two clamping holes 42 are both located in the receiving cavity 44 and are respectively arranged on the first side shell 41 and the second side shell; the two clamps 22 of the fixing part 2 are inserted into the two clamping holes 42 in a one-to-one correspondence. In this embodiment, the two clamping holes 42 are respectively arranged on the first side shell 41 and the second side shell, and the first side shell 41 and the second side shell are detachably connected, and this arrangement can facilitate the installation and removal of the two clamps 22 in a one-to-one correspondence with the two clamping holes 42.

[0049] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A terminal block, characterized in that: include: A terminal part (1), one end of the terminal part (1) is in a tubular structure and allows an external connection line to be inserted into a tube hole (11) of the terminal part (1), a through groove (12) is provided on a peripheral wall of one end of the terminal part (1) along its axial direction, and the through groove (12) is connected to the tube hole (11); A fixing part (2), the fixing part (2) being used for being fixedly connected to the housing, and the other end of the terminal part (1) being fixedly connected to the fixing part (2).

2. The connection terminal according to claim 1, characterized in that: The fixing portion (2) comprises a body (21), and two opposite sides of the body (21) are respectively provided with clips (22), and the clips (22) can be inserted into the clip holes (42) provided in the shell.

3. The connection terminal according to claim 1, characterized in that: The other end of the terminal portion (1) is provided with a connecting plate (3), and the connecting plate (3) is fixedly connected to the fixing portion (2).

4. The connection terminal according to claim 3, characterized in that: The connecting plate (3) and the terminal portion (1) are integrally formed.

5. The connection terminal according to claim 3, characterized in that: The fixing portion (2) is provided with a connecting plane, and the connecting plate (3) is fitted with and fixedly connected to the connecting plane of the fixing portion (2).

6. The connection terminal according to claim 1, characterized in that: A plurality of anti-slip protrusions are arranged on the wall of the tube hole (11).

7. The connection terminal according to claim 6, characterized in that: The anti-slip protrusion is an annular protrusion arranged on the wall of the tube hole (11) around the axis of the tube hole (11), and a plurality of the anti-slip protrusions are arranged at intervals along the axial direction of the tube hole (11).

8. The connection terminal according to any one of claims 1 to 7, characterized in that: The fixing portion (2) is integrally formed.

9. A circuit breaker, characterized in that The invention comprises the shell and the terminal block according to any one of claims 1 to 8, wherein the shell is provided with a receiving cavity (44), one end of the terminal part (1) is placed outside the shell, the fixing part (2) is placed in the receiving cavity (44), a side wall of the receiving cavity (44) is provided with a through hole (43), and the other end of the terminal part (1) passes through the through hole (43) and is fixedly connected to the fixing part (2).

10. The circuit breaker according to claim 9, characterized in that A clamping hole (42) is provided on the cavity wall of the accommodating cavity (44), and the clamp (22) on the fixing portion (2) is inserted into the clamping hole (42).

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