CN217362064U

CN217362064U - Leakage protection plug mechanism

Info

Publication number: CN217362064U
Application number: CN202221156940.6U
Authority: CN
Inventors: 徐利军; 刘重一
Original assignee: Changshu Sijiadeng Electric Appliance Co ltd
Current assignee: Changshu Sijiadeng Electric Appliance Co ltd
Priority date: 2022-05-13
Filing date: 2022-05-13
Publication date: 2022-09-02
Anticipated expiration: 2032-05-13

Abstract

A leakage protection plug mechanism belongs to the technical field of electrical safety protection. The method is characterized in that: the electric leakage protection plug mechanism comprises a tripping device, a pin assembly and a bottom plate, wherein the tripping device is used for quickly cutting off a power supply when an electric leakage condition occurs to an electric appliance, the pin assembly is used for being inserted into a socket so as to enable the electric appliance to be connected with a circuit, and the bottom plate is used for combining the tripping device and the pin assembly into a whole to form the electric leakage protection plug mechanism. The advantages are that: the leakage protector, i.e. the tripping device and the pins are combined into a whole to form a leakage protection plug mechanism which has compact structure, so that the whole leakage protection device is small and exquisite and is convenient to install.

Description

Leakage protection plug mechanism

Technical Field

The utility model belongs to the technical field of power consumption safety protection, concretely relates to earth leakage protection plug mechanism.

Background

The leakage protector is an indispensable matching device for protecting electric appliances, wherein the small leakage protector is particularly widely applied, and particularly can play a role in quickly cutting off a power supply when electric appliances have leakage in power circuits with small power and needing to perform terminal leakage protection, such as switches, sockets or power strips.

For example, the leakage protector disclosed in chinese patent application publication No. CN107818890A is installed on a multi-purpose socket or a power strip, and is connected to the socket through input and output terminals, and a plug is installed on the socket separately.

In view of the above-mentioned prior art, there is a need for a reasonable improvement of the structure of the earth leakage protection device. The applicant has therefore made an advantageous design, in the context of which the solution to be described below is made.

SUMMERY OF THE UTILITY MODEL

The task of the utility model is to provide an earth leakage protection plug mechanism, it combines earth leakage protector dropout device promptly and participates in and becomes an organic whole and constitutes an earth leakage protection plug mechanism, compact structure for whole earth leakage protection device is small and exquisite, simple to operate.

The utility model discloses a task is accomplished like this, a earth leakage protection plug mechanism, include trip gear, participate in subassembly, bottom plate, trip gear be used for playing the effect of quick turn-off when the electric leakage condition appears in the electrical apparatus, thereby participate in the subassembly and be used for inserting the socket and make electrical apparatus switch-on circuit, the bottom plate be used for uniting two into one with trip gear and participate in the subassembly and constitute earth leakage protection plug mechanism.

The utility model discloses a concrete embodiment, be equipped with stationary contact and movable contact on the trip gear, the switch-on and the disconnection of circuit are realized respectively in stationary contact and the separation of movable contact mutual contact, the trip gear include the base, the base on be fixed with the stationary contact, the trip coil subassembly has been inlayed to base length direction's one end, install the current transformer who is connected with the electroplax electricity on base length direction's the other end, it has the stationary contact board to surround on the ring on current transformer's a side end face, the one end of stationary contact board is buckled and is extended and is gone into the centre bore in the middle of the current transformer and be connected with the stationary contact electricity.

In another specific embodiment of the present invention, the pin assembly includes two pins and a ground pin, the ground pin is disposed between the two pins, two of the pins are symmetrically disposed with respect to the ground pin, two of the pins are inserted into the socket when using, and the other end of the pins is electrically connected to the other end of the stationary contact plate, one of the ground pins is inserted into the socket when using, and the other end of the ground pins is connected to one end of a connecting plate, which is connected to the ground wire.

In another specific embodiment of the present invention, the bottom plate is provided with two pin-inserting grooves, a ground pin-inserting groove, a connecting plate-stepping groove, and a connecting plate-locking groove, wherein the two pins are inserted into the connecting plate-stepping groove, and the connecting plate-locking groove is provided on a side of the bottom plate facing the pin-inserting assembly, and the bottom plate-locking groove is provided on a side of the bottom plate facing the tripping device.

In another specific embodiment of the present invention, the earth leakage protection plug mechanism is accommodated in a plug box formed by assembling an upper cover and a base.

In another specific embodiment of the present invention, the upper cover is connected to the base by a snap fit, and then connected to the upper cover through fixing screws from four corners of the base, and the pins and the ground pins are extended from the base.

In yet another specific embodiment of the present invention, the output wire of the earth leakage protection plug mechanism is pulled out from the side of the plug box formed by splicing the upper cover and the base.

The utility model discloses owing to adopted above-mentioned structure, the beneficial effect who has: on will participating in the installation trip gear through the bottom plate among this technical scheme, form a collection trip gear and participate in the neotype earth leakage protection plug mechanism of foot, not only simple to operate has strengthened the degree of integrating moreover, makes this kind of novel plug compact structure small and exquisite, realizes the miniaturization.

Drawings

Fig. 1 is an explosion diagram of the earth leakage protection plug mechanism of the present invention.

Fig. 2 is another schematic diagram of the leakage protection plug mechanism according to the present invention.

Fig. 3 is an explosion diagram of the tripping device according to the present invention.

Fig. 4 is an exploded view of the pin assembly and base plate of the present invention.

Fig. 5 is a schematic view of the pin assembly and the base plate according to the present invention.

Fig. 6 is a cross-sectional view of the earth leakage protection plug mechanism of the present invention.

Fig. 7 is a schematic view of an application example of the leakage protection plug mechanism of the present invention.

In the figure: 1. trip unit, 11, electric plate, 111, reset button, 1111, reset key, 11111, long shaft, 111111, long groove, 11112, circular groove, 1112, reset spring, 112, coil joint, 113, moving contact plate joint, 12, base, 121, trip coil assembly, 1211, coil rack, 12111, coil fixing boss, 1212, coil, 1213, armature, 1214, armature spring, 122, latch, 123, long shaft mounting cavity, 124, moving contact trip spring seat, 1241, moving contact trip spring, 125, current transformer, 126, stationary contact plate, 1261, stationary contact, 127, moving contact assembly, 1271, moving contact plate 1272, moving contact, 13, cross arm, 131, stop, 1311, reset hole, 1312, sliding groove, 132, stop; 2. the pin assembly comprises a pin assembly, 21 pins, 22 ground pins and 23 connecting plates; 3. the circuit board comprises a bottom board, 31 pin clamping grooves, 32 ground pin clamping grooves, 33 connecting board abdicating grooves, 34 connecting board clamping pins and 35 bottom board clamping pins; 4. an upper cover 41, a waterproof rubber cap; 5. a base; 6. a set screw; 7. and (4) an output lead.

Detailed Description

The following detailed description of the embodiments of the present invention is provided in conjunction with the accompanying drawings, but the description of the embodiments is not intended to limit the technical solutions, and any changes made in the form of the present invention rather than the essential changes should be considered as the protection scope of the present invention.

In the following description, any concept relating to the directions or orientations of up, down, left, right, front, and rear is based on the position shown in the corresponding drawings, and thus should not be construed as particularly limiting the technical solution provided by the present invention.

Referring to fig. 1 and 2, the present invention relates to a leakage protection plug mechanism, which includes a release device 1, a pin assembly 2, and a bottom plate 3. The tripping device 1 is used for quickly cutting off a power supply when an electric leakage condition occurs to an electric appliance, the pin assembly 2 is used for being inserted into a socket so as to enable the electric appliance to be connected with a circuit, and the bottom plate 3 is used for combining the tripping device 1 and the pin assembly 2 into a whole to form an electric leakage protection plug mechanism. The trip device 1 is provided with a fixed contact 1261 and a movable contact 1272, and the fixed contact 1261 and the movable contact 1272 are contacted and separated with each other to respectively realize the connection and disconnection of a circuit.

As shown in fig. 1, 2, 3 and 6, the trip device 1 includes an electric board 11, a base 12, a cross arm 13 and electric parts installed among the three. A reset button 111 is installed above the electric plate 11, the reset button 111 includes a reset key 1111 and a reset spring 1112, the reset key 1111 has a cross section in a shape of a Chinese character shan, a middle long shaft 11111 extends into the base 12, and a long groove 111111 is formed on the long shaft 11111 at a position corresponding to a latch 122 mentioned later. The outer circle of the long shaft 11111 has a circular groove 11112, the return spring 1112 is arranged in the circular groove 11112, one end of the return spring 1112 abuts against the bottom of the circular groove 11112, the other end of the return spring 1112 abuts against the electric plate 11, and the return spring 1112 enables the return key 1111 to have a tendency of rising.

With continued reference to fig. 1, 2, 3 and 6, a base 12 is disposed below the electric board 11, and a trip coil assembly 121 is embedded at one end of the base 12 in the length direction. The trip coil assembly 121 includes a coil former 1211, a coil 1212 sleeved in the coil former 1211, an armature 1213 disposed in the coil former 1211, and an armature spring 1214 sleeved on one end of the armature 1213, wherein the other end of the armature 1213 is locked in a U-shaped slot at one end of a lock catch 122, and the other end of the lock catch 122 slides in a cross arm 13 mentioned below and is locked in a long slot 111111 on a reset key 1111. One end of the coil former 1211 is provided with a coil fixing boss 12111, and the coil fixing boss 12111 is inserted into a coil connector 112 formed on the electric board 11. The trip coil assembly 121 is electrically connected to the circuit on the electrical board 11. The base 12 is provided with a long shaft installation cavity 123 in the middle of the length direction, and the long shaft 11111 is arranged in the long shaft installation cavity 123 in a vertically sliding manner. The trip coil assembly 121 cooperates with the reset button 111, when the trip coil assembly 121 is energized, an electromagnetic force is generated, the electromagnetic force overcomes the spring force of the armature spring 1214, the lock catch 122 on the armature 1213 is disengaged from the long groove 111111 on the reset key 1111, and the reset button 111 can move upward under the spring force of the reset spring 1112. When the trip coil assembly 121 is de-energized, the electromagnetic force disappears, and the armature spring 1214 pushes the armature 1213, so that the latch 122 on the armature 1213 is inserted into the long slot 111111 on the reset button 1111, thereby preventing the reset button 111 from moving.

The other end of the length direction of the base 12 is provided with a current transformer 125 electrically connected with the electric board 11, a static contact plate 126 is arranged around a relative circular ring on the end surface of one side of the current transformer 125, and one end of the static contact plate 126 is bent, extended and extended to extend into a central hole in the middle of the current transformer 125 to be electrically connected with the static contact 1261 on the same side.

A pair of movable contact assemblies 127 are mounted on two sides of the width direction below the base 12, each movable contact assembly 127 includes a movable contact 1271 and a movable contact 1272 fixed on one end of the movable contact 1271, and the other end of the movable contact 1271 extends upwards and is inserted into the movable contact joint 113 on the electric board 11 to be electrically connected with a circuit on the electric board. The moving contact 1272 corresponds to the fixed contact 1261, and the on-off of the circuit is controlled by the combination of the moving contact and the fixed contact. A cross arm 13 is installed between a pair of the movable contact assemblies 127, and the cross arm 13 comprises a stop 131 in the middle and stop cross arms 132 on both sides of the stop 131. The stopper cross arm 132 is abutted against the pair of movable contact assemblies 127 from the lower side, a reset hole 1311 is opened in the middle of the stopper 131, a long shaft 11111 sequentially penetrating the electric plate 11 and the base 12 is inserted into the reset hole 1311, and a sliding groove 1312 for sliding the other end of the latch 122 is opened on the stopper 131.

A moving contact trip spring seat 124 is respectively installed on the base 12 corresponding to the pair of moving contact assemblies 127, a moving contact trip spring cavity with a downward opening is formed on the moving contact trip spring seat 124, and a moving contact trip spring 1241 with one end abutting against the bottom of the cavity and the other end abutting against the moving contact plate 1271 is respectively arranged in the moving contact trip spring cavity.

As shown in fig. 1, 2, 4 to 7, the pin assembly 2 includes two pins 21 and a grounding pin 22, the grounding pin 22 is disposed between the two pins 21, the two pins 21 are symmetrically disposed with respect to the grounding pin 22, one end of the two pins 21 is inserted into the socket during use, and the other end is electrically connected to the other end of the stationary contact plate 126, as shown in fig. 5. One end of the grounding pin 22 is inserted into a socket during use, the other end of the grounding pin is connected with one end of a connecting plate 23, and the other end of the connecting plate 23 is connected with a ground wire to play a role in safety protection.

As shown in fig. 1, 2, 4 to 7, a pin slot 31 for inserting two pins 21, a ground pin slot 32 for inserting a ground pin 22, a connection board relief slot 33 for receiving the connection board 23, and a connection board locking pin 34 for locking the connection board 23 are provided on a surface of the base board 3 facing the pin module 2. The surface of the bottom plate 3 facing the tripping device 1 is provided with a bottom plate clamping pin 35 clamped on the base 12 of the tripping device 1, so that the tripping device 1 and the pin assembly 2 are combined into a whole to form an electric leakage protection plug mechanism.

As shown in fig. 7, the earth leakage protection plug mechanism is accommodated in a plug box formed by splicing an upper cover 4 and a base 5, specifically, the upper cover 4 and the base 5 are connected by a buckle, and then are connected with the upper cover 4 through fixing screws 6 from four corners of the base 5. The end of the reset button 111 is exposed out of the upper cover 4 and is sleeved in the waterproof rubber cap 41 on the upper cover 4, and the pins 21 and the grounding pin 22 extend out of the base 5. The output lead 7 of the leakage protection plug mechanism is pulled out from the side surface of a plug box formed by splicing the upper cover 4 and the base 5.

Referring to fig. 1 and fig. 3 in combination with fig. 6, when the earth leakage protection plug mechanism is inserted into the receptacle and the reset button 111 is pressed, the lower reset button 1111 displaces downward and compresses the reset spring 1112 to store energy, and when the lower end of the long shaft 11111 pushes the latch 122 away and the long groove 111111 and the latch 122 are engaged with each other, the latch 122 slides into the sliding groove 1312 of the cross arm 13. Therefore, when the reset button 111 is released to make the reset spring 1112 rebound, the long shaft 11111 drives the latch 122 and the cross arm 13 to move upwards together, the block cross arm 132 of the cross arm 13 overcomes the acting force of the moving contact tripping spring 1241 to move the moving contact 1272 on the moving contact assembly 127 upwards during the lifting process, and the moving contact 1272 is contacted with the fixed contact 1261 to make the circuit.

When the circuit leaks, the current transformer 125 generates an induced current and outputs the induced current to the electric board 11, the circuit on the electric board 11 is connected to electrify the trip coil assembly 121 to generate a magnetic field, and the armature 1213 moves away from the long axis 11111 after overcoming the elastic force of the armature spring 1214, the armature 1213 drives the latch 122 to slide away from the long axis 11111, so that the latch 122 is tripped from the long axis 111111, because the movable contact assembly 127 makes the movable contact 1272 contact with the fixed contact 1261 under the action of the upward push-pull of the long axis 11111, when the latch 122 is tripped, the latch 122 moves out of the sliding groove 1312, the movable contact 1271 pushes the cross arm 13 to move downward under the action force of the movable contact trip spring 1241, and the movable contact 1272 is separated from the fixed contact 1261, thereby cutting off the power supply and realizing the leakage protection of the electric appliance.

Claims

1. An earth leakage protection plug mechanism, its characterized in that: the novel electric leakage protection plug mechanism comprises a tripping device (1), a pin assembly (2) and a bottom plate (3), wherein the tripping device (1) is used for quickly cutting off a power supply when an electric leakage condition occurs to an electric appliance, the pin assembly (2) is used for being inserted into a socket to enable the electric appliance to be switched on, and the bottom plate (3) is used for combining the tripping device (1) and the pin assembly (2) into a whole to form the electric leakage protection plug mechanism.

2. A residual current protection plug mechanism according to claim 1, characterized in that: the trip device (1) is provided with a fixed contact (1261) and a movable contact (1272), the fixed contact (1261) and the movable contact (1272) are in contact with and separated from each other to respectively realize the connection and disconnection of a circuit, the trip device (1) comprises a base (12), the fixed contact (1261) is fixed on the base (12), a trip coil assembly (121) is embedded at one end of the base (12) in the length direction, a current transformer (125) electrically connected with an electric plate (11) is installed at the other end of the base (12) in the length direction, a fixed contact plate (126) is wound on a circular ring on the end surface of one side of the current transformer (125), and one end of the fixed contact plate (126) is bent, extends and extends into a central hole in the middle of the current transformer (125) and is electrically connected with the fixed contact (1261).

3. A residual current protection plug mechanism according to claim 2, characterized in that: the pin assembly (2) comprises two pins (21) and a grounding pin (22), the grounding pin (22) is arranged between the two pins (21), the two pins (21) are symmetrically arranged relative to the grounding pin (22), one end of each of the two pins (21) is inserted into a socket when in use, the other end of each of the two pins is electrically connected with the other end of the static contact plate (126), one end of the grounding pin (22) is inserted into the socket when in use, the other end of the grounding pin is connected with one end of a connecting plate (23), and the other end of the connecting plate (23) is connected with a ground wire.

4. A residual current device as claimed in claim 3, wherein: the base plate is characterized in that a pin clamping groove (31) for inserting two pins (21), a grounding pin clamping groove (32) for inserting a grounding pin (22), a connecting plate abdicating groove (33) for placing a connecting plate (23) and a connecting plate clamping pin (34) for clamping the connecting plate (23) are arranged on one surface of the base plate (3) facing the pin assembly (2), and a base plate clamping pin (35) clamped on a base (12) of the tripping device (1) is arranged on one surface of the base plate (3) facing the tripping device (1).

5. A residual current device according to claim 4, wherein: the leakage protection plug mechanism is accommodated in a plug box formed by splicing an upper cover (4) and a base (5).

6. A residual current protection plug mechanism according to claim 5, characterized in that: the upper cover (4) is connected with the base (5) in a buckling mode, the four corners of the base (5) are connected with the upper cover (4) through fixing screws (6), and the pins (21) and the grounding pins (22) extend out of the base (5).

7. A residual current device according to claim 5, wherein: and an output lead (7) of the leakage protection plug mechanism is pulled out from the side surface of a plug box formed by splicing the upper cover (4) and the base (5).