Wire terminal and circuit breaker

Abstract

A kind of terminal and circuit breaker, it includes terminal board, and first connecting mechanism and second connecting mechanism for fixing first external wire and second external wire respectively, first connecting mechanism and second connecting mechanism include first screw and second screw respectively, and first external wire and second external wire can be fixed on terminal board by rotating first screw and second screw respectively, the first screw and second screw are coaxially arranged, and second screw is arranged above first screw, the second screw is provided with avoiding passage, first screw can be rotated by avoiding passage, by avoiding screwdriver on second screw, screwdriver can be passed through avoiding passage to rotate first screw, so that first screw and second screw fix first external wire and second external wire respectively, first external wire and second external wire are more reliable in separate wiring, and the structural restriction to second external wire can be relaxed, to apply to various specifications and shapes of second external wire.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of low-voltage electrical apparatus, in particular to a terminal and a circuit breaker. BACKGROUND

[0002] Switching apparatus such as circuit breakers are usually provided with terminals, through which the circuit is connected to the line, so that the circuit can be controlled. For example, the circuit breaker can connect and cut off the load power of the electrical equipment when the circuit is running normally, and cut off the circuit when the circuit fails. However, the busbar of the existing circuit breaker needs to share a terminal screw with the external line wire for wiring, which not only limits the structure of the busbar, but also makes the wiring difficult, and it is necessary to ensure that the busbar and the external line wire are both inserted into place, and then the terminal screw is rotated to fix the busbar and the external line wire together. SUMMARY

[0003] The purpose of the present application is to overcome the defects of the prior art and provide a terminal in which the second external wire is connected separately from the first external wire.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0005] A terminal includes a terminal plate, and a first connecting mechanism and a second connecting mechanism for fixing a first external wire and a second external wire respectively, the first connecting mechanism and the second connecting mechanism respectively include a first screw and a second screw, and the first screw and the second screw can be rotated to fix the first external wire and the second external wire on the terminal plate respectively, the first screw and the second screw are coaxially arranged, and the second screw is arranged above the first screw, the second screw is provided with an avoiding passage, and the first screw can be rotated through the avoiding passage.

[0006] Preferably, the second connecting mechanism further includes a terminal nut, a second threaded hole is arranged on the terminal nut and threadedly matched with the second screw, the second screw is moved towards and away from the terminal plate along the direction of the second threaded hole when being rotated, and the second screw can press and fix the second external wire on the terminal plate when being moved towards the terminal plate.

[0007] Preferably, the second screw is in a cylindrical structure, the avoiding passage is arranged on the inner side of the second screw, and a thread is arranged on the outer side of the second screw.

[0008] Preferably, the top end of the second screw is in a circular ring shape, and at least one pair of second operation grooves is arranged on the end face of the top of the second screw for rotating the second screw.

[0009] Preferably, a thread is arranged around the bottom of the first screw, a first operation groove matched with a screwdriver is arranged on the top of the first screw, and the top of the first screw is inserted into the avoiding passage.

[0010] Preferably, the second screw is provided with a limiting boss protruding into the avoiding channel, and the limiting boss is used to block the first screw.

[0011] Preferably, the terminal block comprises a lower terminal segment matched with the first connecting mechanism, and an upper terminal segment matched with the second connecting mechanism and oppositely arranged above the lower terminal segment, one end of the lower terminal segment is provided with an external terminal segment, the external terminal segment is connected between the lower terminal segment and one end of the upper terminal segment, the other end of the lower terminal segment is provided with an internal terminal segment, the internal terminal segment is used to connect the switch electric appliance, and the upper terminal segment is provided with an avoiding hole corresponding to the first screw.

[0012] Preferably, the first connecting mechanism further comprises a terminal seat in a frame structure, the terminal seat is movably sleeved on the lower terminal segment of the terminal block, the top of the terminal seat is provided with a first threaded hole matched with the first screw in thread, the first screw is blocked by the top side of the lower terminal segment after passing through the first threaded hole, the first screw can drive the terminal seat to move when rotating, and the bottom of the terminal seat can press the first external wire to be fixed on the bottom side of the lower terminal segment when the bottom of the terminal seat is close to the terminal block.

[0013] A circuit breaker, and the outgoing line end and / or the incoming line end of the circuit breaker are provided with at least one set of the terminal.

[0014] Preferably, the housing of the circuit breaker is provided with a mounting groove for fixing the terminal nut of the terminal, the housing of the circuit breaker is provided with an operating hole for avoiding the screwdriver above the second screw, and the inner diameter of the operating hole is smaller than the outer diameter of the second screw.

[0015] The terminal of the present application, by arranging the avoiding channel for avoiding the screwdriver on the second screw, the screwdriver can rotate the first screw through the avoiding channel, the first screw and the second screw are used to fix the first external wire and the second external wire respectively, and the first external wire and the second external wire can be separately connected, which is not only beneficial to adjust the torque when rotating and tightening respectively, and can make the respective contact with the terminal block more reliable, but also can relax the structural restriction on the second external wire, so as to adapt to various specifications and shapes of the second external wire, and the second external wire can be used more flexibly. In addition, by arranging the first screw and the second screw coaxially, the space occupied by the terminal in the radial direction can be reduced, and the influence on the structure of the existing switch electric appliance can be further reduced, so that the present application can be popularized without changing the structure of the existing switch electric appliance.

[0016] In addition, the periphery of the top of the first screw is not provided with threads, the top of the first screw is inserted into the avoiding channel of the second screw, which can reduce the space occupied by the first screw and the second screw in the axial direction, further reduce the influence on the structure of the existing switch electric appliance, and be more convenient for popularization.

[0017] In addition, the top of the second screw is provided with a limiting boss that protrudes into the clearance channel. The limiting boss is used to block the first screw in the clearance channel and prevent the first screw from falling off after passing through the clearance channel. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the terminal block created in this invention;

[0019] Figure 2 This is a cross-sectional view of the terminal block created in this invention;

[0020] Figure 3 This is a schematic diagram of the structure of the second screw created in this invention;

[0021] Figure 4 This is a schematic diagram of the structure of the first screw created by this invention;

[0022] Figure 5 This is a schematic diagram of the structure of the present invention when the wiring terminal is not tightened;

[0023] Figure 6 This is a schematic diagram of the structure of the terminal block being tightened according to the present invention;

[0024] Figure 7 This is a schematic diagram of the structure of the shell created in this invention. Detailed Implementation

[0025] The following is in conjunction with the appendix Figures 1 to 7 The given embodiments further illustrate specific implementations of the terminal block created by the present invention. The terminal block created by the present invention is not limited to the descriptions of the following embodiments.

[0026] like Figures 1-4 As shown, the terminal block of the present invention includes a terminal block 300 for connecting the main circuit of a switching appliance, and a first connecting mechanism 100 and a second connecting mechanism 200 for fixing a first external wire 1 and a second external wire 2, respectively. The first connecting mechanism 100 and the second connecting mechanism 200 are driven by a first screw 110 and a second screw 210, respectively. Rotating the first screw 110 and the second screw 210 can fix the first external wire 1 and the second external wire 2 on the terminal block 300, respectively. The first screw 110 and the second screw 210 are coaxially arranged, and the second screw 210 is arranged above the first screw 110. The second screw 210 is provided with a clearance channel 211 for avoiding a screwdriver (not shown in the figure). The screwdriver can rotate the first screw 110 through the clearance channel 211.

[0027] The wire terminal of the present application can make the screwdriver rotate the first screw 110 by rotating through the avoiding channel 211, and fix the first external conductor 1 and the second external conductor 2 by the first screw 110 and the second screw 210 respectively, so that the first external conductor 1 and the second external conductor 2 can be connected separately, which is not only beneficial to adjust the torque when rotating and tightening respectively, and make the contact between each and the connection plate 300 more reliable, but also can relax the structure restriction of the second external conductor 2, so as to be suitable for various specifications and shapes of the second external conductor 2, and can be more flexible when using the second external conductor 2. In addition, by coaxially arranging the first screw 110 and the second screw 210, the space occupied by the wire terminal in the radial direction can be reduced, and the influence on the structure of the existing switch electric appliance can be reduced, so that the present application can be popularized without changing the structure of the existing switch electric appliance. In the embodiment, the first external conductor is an insulated conductor, and the second external conductor 2 is a busbar.

[0028] As shown in Figures 5-6 The switch electric appliance of the present application is a two-pole circuit breaker, which comprises two-pole circuit breaker units 3, each of which is provided with a wire terminal at both ends, and each of which comprises a shell 4 and a main circuit arranged in the shell 4. The main circuit of each pole circuit breaker unit 3 is connected with the first external conductor 1 and / or the second external conductor 2 through the wire terminals at both ends, and each pole circuit breaker unit 3 can control the on-off of the main circuit by opening and closing. The present application does not limit the number of poles of the circuit breaker, which can be single-pole or three-pole or four-pole, etc. The wire terminal of the present application can be arranged in only one of the pole circuit breaker units 3, or in all of the pole circuit breaker units 3. It can be understood that the wire terminal of the present application can be arranged at both ends of the circuit breaker, or only at one end of the circuit breaker, and the wire terminal of the prior art can be arranged at the other end of the circuit breaker, which all belong to the protection scope of the present application. In addition, the wire terminal of the present application can also be used in switch electric appliances other than circuit breakers, such as relays, contactors and auxiliary modules used in splicing, etc., which can all use the wire terminal of the present application.

[0029] As shown in Figures 1-2As shown, the wiring board 300 of the embodiment includes a lower wiring segment 330 matched with the first connecting mechanism 100, and an upper wiring segment 310 matched with the second connecting mechanism 200 and oppositely arranged above the lower wiring segment 330, one end of the lower wiring segment 330 is provided with an external wiring segment 320, the external wiring segment 320 is connected between the lower wiring segment 330 and one end of the upper wiring segment 310, the other end of the lower wiring segment 330 is provided with an internal wiring segment 340, the internal wiring segment 340 is used for connecting the main circuit of the switch electric appliance, the upper wiring segment 310 is provided with a avoiding hole 311 corresponding to the first screw 110, the first connecting mechanism 100 and the second connecting mechanism 200 can respectively press the first external wire 1 and the second external wire 2 on the lower wiring segment 330 and the upper wiring segment 310.

[0030] As shown in the figure, Figures 1-2 The first connecting mechanism 100 of the embodiment drives the wiring seat 120 through the first screw 110, and then fixes the first external wire 1 on the wiring board 300 through the wiring seat 120. Specifically, the first connecting mechanism 100 includes the first screw 110 and the wiring seat 120 in a frame structure, the wiring seat 120 is movably sleeved on the lower wiring segment 330 of the wiring board 300, the top of the wiring seat 120 is provided with the first threaded hole 121 matched with the first screw 110 in thread, the first screw 110 passes through the first threaded hole 121 and is matched with the top side of the lower wiring segment 330, the first screw 110 can be blocked by the lower wiring segment 330 when rotating, so that the first screw 110 drives the wiring seat 120 to move through the first threaded hole 121, when the bottom of the wiring seat 120 is away from the lower wiring segment 330, the first external wire 1 can be loosened. It can be understood that the first connecting mechanism 100 can also not be provided with the wiring seat 120, and the first external wire 1 can be fixed by moving the first screw 110, and the structure of the first connecting mechanism 100 is not limited here.

[0031] As shown in the figure, Figures 1-2 The second connecting mechanism 200 of the embodiment directly fixes the busbar on the wiring board 300 through the second screw 210. Specifically, the second connecting mechanism 200 includes the second screw 210 and the wiring nut 220, the wiring nut 220 is fixedly installed in the mounting groove 5 Figure 7 ) opened in the shell 4 of the circuit breaker, the wiring nut 220 is provided with the second threaded hole 221 matched with the second screw 210 in thread, the second screw 210 moves along the direction of the second threaded hole 221 when rotating, the second screw 210 can press the second external wire 2 on the upper wiring segment 310 when approaching the upper wiring segment 310, and the second screw 210 can loosen the second external wire 2 when moving away from the upper wiring segment 310.

[0032] It can be understood that the second connecting mechanism 200 can also not be provided with the wiring nut 220, and a second threaded hole 221 matched with the second screw 210 can be directly machined on the shell 4 of the switch device, so that the second screw 210 is directly matched with the shell 4 of the switch device. In addition, the wiring nut 220 can also be fixedly installed on the shell 4 of the switch device in other ways, and is not limited to the form of the installation groove 5, but can also be formed by integral injection molding, which is not specifically limited here.

[0033] As shown in Figure 3 , the second screw 210 of the embodiment is in a cylindrical structure, the avoidance passage 211 is arranged in the middle of the second screw 210, threads are arranged on the outer side of the second screw 210, the end face of the top of the second screw 210 is in a circular ring shape, at least one pair of second operation grooves 212 matched with a screwdriver is arranged on the end face of the top of the second screw 210, the center line of each pair of second operation grooves 212 passes through the axis of the avoidance passage 211, the shell 4 of the circuit breaker is provided with an operation hole 6 for avoiding the screwdriver above the second screw 210, and a “one”-shaped screwdriver head can be inserted into one pair of second operation grooves 212 on both sides after passing through the operation hole 6, and the “one”-shaped screwdriver can directly drive the second screw 210 to rotate, and the second screw 210 can be balanced through the symmetrical second operation grooves 212. The embodiment includes two pairs of second operation grooves 212, and a “cross”-shaped screwdriver can also be used for operation. Of course, the shape and number of the second operation grooves 212 can be adjusted to match screwdrivers of different shapes, which all belong to the protection range of the present application.

[0034] As shown in Figure 4 , the top side end face of the first screw 110 is provided with a first operation groove 112 in a “cross” structure, a “cross”-shaped screwdriver can be inserted into the first operation groove 112 to drive the first screw 110 to rotate, threads are arranged around the bottom of the first screw 110, but the threads are not arranged around the top of the first screw 110, the top of the first screw 110 is inserted into the avoidance passage 211 of the second screw 210, which not only can reduce the space occupied by the first screw 110 and the second screw 210 in the axial direction, further reduce the influence on the structure of the existing switch device, and is more convenient for promotion, but also can ensure that the first screw 110 and the second screw 210 have sufficient structural strength and are not easy to be damaged.

[0035] Further, the top of the second screw 210 is provided with a limiting boss 213 protruding to the inside of the avoiding channel 211, the limiting boss 213 can be one or more, the embodiment includes four limiting bosses 213 evenly distributed in the circumference, the limiting boss 213 is used to block the first screw 110 in the avoiding channel 211, to avoid the first screw 110 from falling off after passing through the avoiding channel 211. Of course, the first screw 110 can also not be inserted into the avoiding channel 211, the first screw 110 can be selected to be thicker in size, and at the same time, the limiting boss 213 does not need to be provided, and the avoiding channel 211 can pass the screwdriver used to rotate the first screw 110.

[0036] The above is a further detailed description of the present application in combination with specific preferred embodiments, and cannot be regarded as limiting the specific implementation of the present application. For ordinary skilled persons in the technical field to which the present application belongs, a number of simple deductions or substitutions can be made without departing from the concept of the present application, and all of them should be regarded as falling within the protection scope of the present application.

Claims

1. A wiring terminal characterized by: The utility model provides a connecting device for external wires, which comprises a terminal block (300), and a first connecting mechanism (100) and a second connecting mechanism (200) for fixing a first external wire (1) and a second external wire (2) respectively, the first connecting mechanism (100) and the second connecting mechanism (200) comprise a first screw (110) and a second screw (210) respectively, and the first external wire (1) and the second external wire (2) can be fixed on the terminal block (300) by rotating the first screw (110) and the second screw (210) respectively, the first screw (110) and the second screw (210) are coaxially arranged, and the second screw (210) is arranged above the first screw (110), the second screw (210) is provided with an avoiding channel (211), and the first screw (110) can be rotated through the avoiding channel (211). The second connecting mechanism (200) further comprises a terminal nut (220), the terminal nut (220) is provided with a second threaded hole (221) matched with the second screw (210) in a threaded mode, the second screw (210) approaches and moves away from the terminal block (300) along the direction of the second threaded hole (221) when being rotated, and the second external wire (2) can be fixed on the terminal block (300) by being pressed tightly by the second screw (210) when the second screw (210) approaches the terminal block (300). The first connecting mechanism (100) further comprises a terminal seat (120) in a frame structure, and the top of the terminal seat (120) is provided with a first threaded hole (121) matched with the first screw (110) in a threaded mode.

2. The terminal of claim 1, wherein: The second screw (210) is in a cylindrical structure, the avoiding channel (211) is arranged on the inner side of the second screw (210), and the outer side of the second screw (210) is provided with threads.

3. The terminal of claim 1 wherein: The top end of the second screw (210) is in a circular ring shape, and at least one pair of second operation grooves (212) are arranged on the end face of the top of the second screw (210) and used for rotating the second screw (210).

4. The terminal of claim 1, wherein: The bottom of the first screw (110) is provided with threads around, the top of the first screw (110) is provided with a first operation groove (112) matched with a screwdriver, and the top of the first screw (110) is inserted into the avoiding channel (211).

5. The terminal of claim 4 wherein: The second screw (210) is provided with a limiting boss (213) protruding into the avoiding channel (211), and the limiting boss (213) is used for blocking the first screw (110).

6. The wiring terminal of claim 1, wherein: The terminal block (300) comprises a lower terminal segment (330) matched with the first connecting mechanism (100), and an upper terminal segment (310) matched with the second connecting mechanism (200) and oppositely arranged above the lower terminal segment (330), one end of the lower terminal segment (330) is provided with an external terminal segment (320), the external terminal segment (320) is connected between the lower terminal segment (330) and one end of the upper terminal segment (310), the other end of the lower terminal segment (330) is provided with an internal terminal segment (340) used for connecting a switch electric appliance, and the upper terminal segment (310) is provided with an avoiding hole (311) corresponding to the first screw (110).

7. The wiring terminal according to claim 6, characterized by: The terminal block (120) is movably sleeved on the lower terminal segment (330) of the terminal board (300), the first screw (110) is blocked by the top side of the lower terminal segment (330) after passing through the first threaded hole (121), the first screw (110) can drive the terminal block (120) to move when rotating, and the first external wire (1) can be pressed and fixed on the bottom side of the lower terminal segment (330) when the bottom of the terminal block (120) is close to the terminal board (300).

8. A circuit breaker characterized by: The outgoing line end and / or the incoming line end of the circuit breaker is provided with at least one set of the terminal as claimed in any one of claims 1-7.

9. The circuit breaker of claim 8, wherein: The housing (4) of the circuit breaker is provided with a mounting groove (5) for fixing and mounting the terminal block (220), the housing (4) of the circuit breaker is correspondingly provided with an operating hole (6) for avoiding screwdriver above the second screw (210), and the inner diameter of the operating hole (6) is smaller than the outer diameter of the second screw (210).

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