Electricity taking mechanism for anti-pressing circuit breaker

Abstract

The utility model discloses an electricity taking mechanism for an anti-pressure circuit breaker, which comprises an actuating mechanism (2) and a circuit board (3) which are arranged in a circuit breaker shell (1), the outside of the circuit board (3) is connected with an electricity taking lead (4), the electricity taking mechanism also comprises a contact piece (5) positioned in the circuit breaker shell (1), one side of the contact piece (5) forms a first electricity connecting end (501), and the other side of the contact piece (5) forms an extrusion part (502). One side of the extrusion part (502) is provided with a trigger part (6) connected with the execution mechanism (2), the other side of the extrusion part (502) is provided with an electricity taking shaft (7), the electricity taking shaft (7) is provided with a second electricity connecting end (701), and the exteriors of the first electricity connecting end (501) and the second electricity connecting end (701) are connected with an electricity taking lead (4) and a circuit board (3) respectively. The power-off device has the characteristic of good power-off effect.

Description

Technical Field

[0001] The utility model relates to a power taking mechanism for a circuit breaker, in particular to a power taking mechanism for a pressure-proof circuit breaker. Background Art

[0002] At present, the circuit board in the circuit breaker will be connected to the external wiring terminal through the power-taking mechanism when it is connected. The power-taking mechanism can be disconnected after the circuit breaker is opened, thereby preventing the circuit board from being damaged by continuous power-on after the circuit breaker is opened. As shown in patent 202110463458.0, the existing power-taking mechanism is provided by setting a split power-taking spring and a magnetic yoke on one side of the handle, and a push plate for squeezing the power-taking spring is provided on the handle, so that the push plate squeezes the power-taking spring to fit the magnetic yoke when the handle is closed to achieve power-on; when the handle is turned to open, the push plate disengages from the power-taking spring to make the power-taking spring rebound and disengage from the magnetic yoke to achieve the power-off function. However, the defect of the power-taking mechanism is that when the circuit breaker handle is obstructed by external obstacles or malicious human restrictions and cannot be rotated to open the gate, the power-taking mechanism will be hindered by the handle and cannot achieve power-off of the circuit board, and the power-off stability is poor.

[0003] Therefore, a circuit board power supply mechanism with good power-off effect is needed. Utility Model Content

[0004] The utility model aims to provide a power taking mechanism for a pressure-proof circuit breaker, which has the characteristic of good power-off effect.

[0005] The technical solution of the utility model is as follows: a power supply mechanism for a pressure-proof circuit breaker, comprising an actuator and a circuit board arranged in a circuit breaker housing, the outside of the circuit board being connected with a power supply lead, and also comprising a contact piece located in the circuit breaker housing, one side of the contact piece forming a first power connection end, the other side of the contact piece forming an extrusion portion, one side of the extrusion portion being provided with a trigger portion connected to the actuator, the other side of the extrusion portion being provided with a power supply shaft, a second power connection end being provided on the power supply shaft, the first power connection end and the second power connection end being connected to the power supply lead and the circuit board outside respectively;

[0006] When the circuit breaker is closed, the actuator squeezes and deforms the extrusion part through the trigger part, so that the extrusion part fits with the power-taking shaft after deformation, thereby electrically connecting the circuit board and the power-taking lead wire.

[0007] After the circuit breaker trips, the actuator operates to drive the trigger part to separate from the extrusion part, so that the extrusion part is separated from the power-taking shaft after losing the extrusion, thereby disconnecting the circuit board and the power-taking lead.

[0008] In the aforementioned power supply mechanism for a pressure-proof circuit breaker, the contact piece is a metal spring piece with a conductive function.

[0009] In the aforementioned power taking mechanism for a pressure-proof circuit breaker, a mounting groove for limiting the contact piece is provided in the circuit breaker housing, and the contact piece is buckled and connected to the circuit breaker housing through the mounting groove.

[0010] In the aforementioned power supply mechanism for a pressure-proof circuit breaker, the contact piece and the circuit board are arranged side by side inside and outside along the thickness direction of the circuit breaker, and a protective cover is provided between the contact piece and the circuit board. The outside of the protective cover can be detachably connected to the circuit breaker housing or the circuit board.

[0011] In the aforementioned power taking mechanism for a pressure-proof circuit breaker, the contact piece and the end of the power taking shaft respectively form a first power connection end and a second power connection end after passing through the protective cover.

[0012] Compared with the prior art, the utility model has the following characteristics:

[0013] (1) The utility model uses the structural coordination between the contact piece and the trigger part provided on the actuator so that the actuator can squeeze the extrusion part through the trigger part in the closed state, so that the extrusion part is pressed against the power-taking shaft after being deformed by pressure, thereby realizing the electrical connection between the circuit board and the power-taking lead; when the actuator is triggered to open the switch, the trigger part is immediately separated from the contact piece, so that the contact piece rebounds to be separated from the power-taking shaft after losing the limit, that is, the circuit board and the power-taking lead are disconnected; and under the above coordination, the opening and closing of the circuit board connection circuit can be controlled by the actuator, so that when the circuit breaker handle is in a continuously closed state, the actuator can still open the switch in a conventional manner and realize the disconnection of the circuit board connection circuit;

[0014] (2) By utilizing the contact piece to fit the power-taking shaft under the extrusion of the trigger part to realize power supply, compared with the existing power supply method through the torsion spring, on the one hand, it can increase the pressure and contact area applied by the contact piece to the power-taking shaft after being compressed and deformed, thereby improving the fit stability of the contact piece and the power-taking shaft; on the other hand, by realizing power supply through the extrusion of the trigger part, it is possible to realize the hard limit of the contact piece when the circuit breaker is closed, thereby reducing the possibility of the contact piece loosening and separation, and further improving its power supply stability;

[0015] (3) By setting a protective cover between the contact piece and the circuit board, the protective cover can also intercept the arc generated when the contact piece and the power-taking shaft are separated, so as to prevent the arc from contacting the circuit board and causing damage; on this basis, the circuit board and the contact piece can be arranged side by side along the thickness direction of the circuit breaker and connected in a buckled manner during layout, which effectively shortens the wiring distance between the circuit board and the power-taking mechanism when connecting, and facilitates the wiring of the circuit breaker;

[0016] Therefore, the utility model has the characteristic of good power-off effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an exploded view of the utility model;

[0018] Figure 2 It is a schematic diagram of the distribution of the contact piece and the trigger part in the open state;

[0019] Figure 3 It is a schematic diagram of the distribution of the contact piece in the closed state and the trigger part;

[0020] Figure 4 It is a schematic diagram of the installation of the contact piece on the circuit breaker housing.

[0021] The markings in the accompanying drawings are: 1-circuit breaker housing, 2-actuator, 3-circuit board, 4-power lead, 5-contact piece, 6-trigger part, 7-power shaft, 8-installation slot, 9-protective cover, 501-first power connection terminal, 502-extrusion part, 701-second power connection terminal. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0023] Embodiment 1. A power supply mechanism for a pressure-proof circuit breaker, comprising: Figure 1 As shown, it includes an actuator 2 and a circuit board 3 arranged in a circuit breaker housing 1, the outside of the circuit board 3 is connected with a power lead 4, and the external connection terminal of the power lead 4, and also includes a contact piece 5 located in the circuit breaker housing 1, one side of the contact piece 5 forms a first power connection end 501, and the other side of the contact piece 5 forms an extrusion portion 502, one side of the extrusion portion 502 is provided with a trigger portion 6 connected to the actuator 2, and the other side of the extrusion portion 502 is provided with a power shaft 7, the extrusion portion 502 is separated from the power shaft 7 in a natural state, and the power shaft 7 forms a second power connection end 701 at the end away from the extrusion portion 502, and the first power connection end 501 and the second power connection end 701 are respectively connected to the power lead 4 and the circuit board 3 outside;

[0024] When the circuit breaker is closed, the actuator 2 squeezes and deforms the extrusion portion 502 through the trigger portion 6, so that the extrusion portion 502 fits with the power-taking shaft 7 after deformation, thereby electrically connecting the circuit board 3 and the power-taking lead 4 to each other;

[0025] After the circuit breaker trips, the actuator 2 operates to drive the trigger part 6 to separate from the squeezing part 502, so that the squeezing part 502 is separated from the power taking shaft 7 after losing the squeezing, thereby disconnecting the circuit board 3 and the power taking lead 4 from each other.

[0026] The contact piece 5 is a metal spring with a conductive function.

[0027] The circuit breaker housing 1 is provided with a mounting groove 8 for limiting the contact piece 5 , and the contact piece 5 is buckled and connected to the circuit breaker housing 1 through the mounting groove 8 .

[0028] The contact piece 5 and the circuit board 3 are arranged side by side inside and outside along the thickness direction of the circuit breaker. A protective cover 9 is arranged between the contact piece 5 and the circuit board 3. The outside of the protective cover 9 can be detachably connected to the circuit breaker housing 1 or the circuit board 3.

[0029] The ends of the contact piece 5 and the power taking shaft 7 respectively form a first power connection terminal 501 and a second power connection terminal 701 after passing through the protective cover 9 .

[0030] The working principle of the utility model is as follows: when the circuit breaker is in the closed state, the trigger part 6 on the actuator 2 squeezes the extrusion part 502 of the contact piece 5, so that the extrusion part 502 fits with the power-taking shaft 7 after being deformed by pressure, so that the circuit board 3 can take power from the power-taking lead 4. When the circuit breaker is opened, the electromagnetic mechanism applies a triggering action to the actuator 2, and then the actuator 2 performs an opening action after being triggered and drives the trigger part 6 to move away from the extrusion part 502, thereby releasing the extrusion limit on the extrusion part 502. After the limit is released, the extrusion part 502 rebounds to the natural state, and then separates from the power-taking shaft 7, so that the circuit board and the power-taking lead 4 are disconnected from each other.

[0031] Embodiment 2. A power supply mechanism for a pressure-proof circuit breaker, comprising an actuator 2 and a circuit board 3 arranged in a circuit breaker housing 1, the circuit board 3 is externally connected with a power supply lead 4, the power supply lead 4 is externally connected to a wiring terminal, and also comprises a contact piece 5 located in the circuit breaker housing 1, one side of the contact piece 5 forms a first power connection terminal 501, the other side of the contact piece 5 forms an extrusion portion 502, one side of the extrusion portion 502 is provided with a trigger portion 6 connected to the actuator 2, the other side of the extrusion portion 502 is provided with a power supply shaft 7, the extrusion portion 502 is separated from the power supply shaft 7 in a natural state, the power supply shaft 7 forms a second power supply terminal 701 at the end away from the extrusion portion 502, the first power supply terminal 501 and the second power supply terminal 701 are externally connected to the power supply lead 4 and the circuit board 3 respectively;

[0032] When the circuit breaker is closed, the actuator 2 squeezes and deforms the extrusion portion 502 through the trigger portion 6, so that the extrusion portion 502 fits with the power-taking shaft 7 after deformation, thereby electrically connecting the circuit board 3 and the power-taking lead 4 to each other;

[0033] After the circuit breaker trips, the actuator 2 operates to drive the trigger part 6 to separate from the squeezing part 502, so that the squeezing part 502 is separated from the power taking shaft 7 after losing the squeezing, thereby disconnecting the circuit board 3 and the power taking lead 4 from each other.

[0034] The contact piece 5 is a metal spring with a conductive function.

[0035] The circuit breaker housing 1 is provided with a mounting groove 8 for limiting the contact piece 5 , and the contact piece 5 is buckled and connected to the circuit breaker housing 1 through the mounting groove 8 .

[0036] The contact piece 5 and the circuit board 3 are arranged side by side inside and outside along the thickness direction of the circuit breaker. A protective cover 9 is arranged between the contact piece 5 and the circuit board 3. The outside of the protective cover 9 can be detachably connected to the circuit breaker housing 1 or the circuit board 3.

[0037] The ends of the contact piece 5 and the power taking shaft 7 respectively form a first power connection terminal 501 and a second power connection terminal 701 after passing through the protective cover 9 .

[0038] The circuit board 3 is provided with buckle grooves for buckling and connecting the first power connection terminal 501 and the second power connection terminal 701, respectively. One end of the power lead 4 is fixed on the circuit board 3 and extends to the buckle groove position of the first power connection terminal 501. During installation, the contact piece 5 and the power connection shaft 7 are first installed on the circuit breaker housing 1 and fixed through the protective cover 9, and then the circuit board 3 is installed so that the first power connection terminal 501 and the second power connection terminal 701 pass through the circuit board 3 and form a buckle. Finally, the first power connection terminal 501 and the power connection lead 4 fixed on the circuit board are welded to each other to form an electrical connection, and the second power connection terminal 701 and the circuit board are welded to each other to form an electrical connection, so as to realize the power supply function.

[0039] This embodiment can effectively eliminate the connection line between the circuit board 3, the contact piece 5 and the power taking shaft 7 by interlocking and fixing the circuit board 3, the power taking lead 4, the first power taking end 501 and the second power taking end 701, and enable the welding device to complete the welding from the front side of the circuit board 3 after the circuit board 3 is installed, thereby effectively eliminating the operation of manual wiring, reducing the difficulty of wiring inside the circuit breaker and improving the assembly efficiency of the circuit breaker.

Claims

1. A power supply mechanism for a pressure-proof circuit breaker, comprising an actuator (2) and a circuit board (3) arranged in a circuit breaker housing (1), wherein the circuit board (3) is externally connected with a power supply lead (4), characterized in that: It also includes a contact piece (5) located in the circuit breaker housing (1), one side of the contact piece (5) forming a first power connection end (501), the other side of the contact piece (5) forming an extrusion portion (502), one side of the extrusion portion (502) being provided with a trigger portion (6) connected to the actuator (2), the other side of the extrusion portion (502) being provided with a power supply shaft (7), the power supply shaft (7) being provided with a second power connection end (701), the outsides of the first power connection end (501) and the second power connection end (701) being respectively connected to a power supply lead (4) and a circuit board (3); When the circuit breaker is closed, the actuator (2) squeezes and deforms the extrusion portion (502) via the trigger portion (6), so that the extrusion portion (502) fits with the power-taking shaft (7) after deformation, thereby electrically connecting the circuit board (3) and the power-taking lead (4). After the circuit breaker trips, the actuator (2) operates to drive the trigger part (6) to separate from the extrusion part (502), so that the extrusion part (502) is separated from the power-taking shaft (7) after losing the extrusion, thereby disconnecting the circuit board (3) and the power-taking lead (4).

2. The power taking mechanism for a pressure-proof circuit breaker according to claim 1, characterized in that: The contact piece (5) is a metal spring piece with a conductive function.

3. The power taking mechanism for a pressure-proof circuit breaker according to claim 1, characterized in that: The circuit breaker housing (1) is provided with a mounting groove (8) for limiting the position of the contact piece (5), and the contact piece (5) is buckled and connected to the circuit breaker housing (1) through the mounting groove (8).

4. The power taking mechanism for a pressure-proof circuit breaker according to claim 1, characterized in that: The contact piece (5) and the circuit board (3) are arranged side by side inside and outside along the thickness direction of the circuit breaker, a protective cover (9) is provided between the contact piece (5) and the circuit board (3), and the outside of the protective cover (9) can be detachably connected to the circuit breaker housing (1) or the circuit board (3).

5. The power taking mechanism for a pressure-proof circuit breaker according to claim 4, characterized in that: The ends of the contact piece (5) and the power extraction shaft (7) respectively form a first power connection end (501) and a second power connection end (701) after passing through the protective cover (9).

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