Novel electric leakage protection socket

Abstract

The utility model relates to a novel leakage protection socket, comprising a pedestal and an upper cover, a circuit board in the pedestal is provided with a current transformer and a trip coil, the pedestal is also internally provided with a trip support and an assembly frame, the trip support is internally provided with a lifting seat and a swing seat, a locking plate is slidably arranged on a locking plate opening in the lifting seat, and the swing seat is provided with a swing rod. The upper cover is provided with a tripping button and a reset button, the lower side of the reset button is fixedly connected with a reset rod, the lower end of the reset rod is provided with a necking opening, the left side of the penetrating opening of the locking plate is used for allowing the reset rod to penetrate through, and the right side of the penetrating opening of the locking plate is used for allowing the necking opening to be clamped in. The circuit board is provided with a test reset switch on the lower side of the lifting seat, the lower end of the tripping button is fixedly connected with an abutting column, the lower end of the abutting column is provided with an inclined face used for abutting against the cambered surface notch of the swing seat, and a first spring is arranged between the lifting seat and the assembly frame.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit protection, in particular to a new type of leakage protection socket. Background Art

[0002] The leakage protection sockets in the prior art, such as a circuit protection device with the patent publication number CN222301406U and a leakage protection socket with the patent publication number CN217306891U, generally include key components such as an AC power channel, a ground fault circuit interruption unit, and a synchronous conversion unit. Among them, the ground fault circuit interruption unit further includes a reset operation mechanism and a tripping operation mechanism, which are used to automatically cut off the power supply when a ground fault current is detected, thereby protecting the safety of users.

[0003] In the traditional tripping operation mechanism, the design of a tripping slider is usually adopted. Specifically, when a tripping operation is required, an operator presses the tripping button, and the tripping slider is moved by the relative sliding of the inclined surface of the tripping push rod and the inclined surface of the tripping slider, and then the locking pin is pushed, so that the lifter moves downward, and finally the main power switch is disconnected. However, this design has some deficiencies: for example, since the contact area between the tripping slider and other components is large, it is easy to generate frictional resistance, resulting in unsmooth operation. Therefore, in view of this technical problem, this application makes improvements. Summary of the Utility Model

[0004] The utility model provides a new type of leakage protection socket, whose structural cooperation relationship is reasonable and reliable, and the operation is smooth, solving the above problems existing in the prior art during use.

[0005] The technical solution of the present utility model is realized as follows: A new type of leakage protection socket includes a base and an upper cover. A circuit board is provided inside the base. On the left and right sides of the upper end surface of the circuit board, a current transformer and a tripping coil are respectively installed. A tripping bracket is provided between the current transformer and the tripping coil. An assembly frame is installed on the upper side of the tripping bracket on the base. A lifting seat and a swinging seat are provided inside the tripping bracket. The lifting seat is close to one side of the tripping coil and is slidably arranged up and down on the tripping bracket. The swinging seat is located on the left side of the lifting seat and is rotatably connected to the tripping bracket. A locking piece opening is formed through the left and right inside the lifting seat. A locking piece is slidably arranged left and right on the locking piece opening. A through hole is formed on the locking piece. The left side of the locking piece abuts against the swinging seat. A tripping armature for driving the locking piece to slide left and right is provided on the tripping coil. A tripping button and a reset button are provided on the upper cover. A reset rod is fixedly connected to the lower side of the reset button. The reset rod passes through the assembly frame and the lifting seat. A necking opening is formed at the lower end of the reset rod. The left side of the through hole of the locking piece is for the reset rod to pass through, and the right side of the through hole of the locking piece is for the necking opening to be clamped therein. A test reset switch is provided on the circuit board under the lifting seat. A pressing column is fixedly connected to the lower end of the tripping button. An arc-shaped groove opening that is inclined in an arc shape from left to right and downward is formed on the upper side of the swinging seat. The lower end of the pressing column has an inclined surface for abutting against the arc-shaped groove opening. A first spring is provided between the lifting seat and the assembly frame.

[0006] Preferably, a second spring is provided between the reset button and the assembly frame. A third spring is provided between the tripping button and the upper cover. A fourth spring is provided between the right end of the tripping armature and the housing.

[0007] Preferably, power terminals are electrically connected to both the front and rear sides of the current transformer on the left side of the circuit board. Load terminals are electrically connected to both the front and rear sides of the tripping coil on the right side of the circuit board. A power pin is provided on the current transformer. A socket pin is provided on the assembly frame. A load pin is electrically connected to the circuit board. The socket pin and the load pin are located above the power pin.

[0008] Preferably, a lifting rod is provided on the lifting seat, and the lifting rod extends to the lower side of the power pin.

[0009] Preferably, a grounding piece is provided between the base and the upper cover, and a grounding end is provided on the grounding piece.

[0010] Preferably, a rotation opening is formed on the tripping bracket. A rotating shaft for rotatably fitting in the rotation opening is provided on the swinging seat. Sliding groove openings are formed on both the front and rear sides of the lifting seat on the tripping bracket. The lifting seat is movably fitted up and down in the sliding groove openings.

[0011] Preferably, the trip button and the reset button are integrally formed with limit hook feet for limiting on the upper cover.

[0012] In summary, the beneficial effects of the present utility model are as follows:

[0013] 1. By changing the trip structure and introducing the swing seat structure, the present utility model improves the operation reliability and user experience. When the user presses the trip button, the inclined surface at the lower end of the abutting column presses on the arc-shaped notch of the swing seat, and the swing seat rotates around its rotating shaft, pushing the lock piece to slide to the right, so that the reset rod reaches the left side of the through hole of the lock piece. At this time, the first spring pushes the lifting seat to move downward, disconnecting the electrical connection between the power supply pin, the socket pin and the load pin, and pressing the test reset switch. Compared with the traditional slider design, this structure reduces the frictional resistance and makes the operation smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0015] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 is a top view of the present utility model;

[0017] Figure 3 is Figure 2 a schematic cross-sectional structure diagram in the direction of A-A;

[0018] Figure 4 is Figure 2 a schematic cross-sectional structure diagram in the direction of B-B;

[0019] Figure 5 is a schematic diagram of the structure of the present utility model with the base, the upper cover and the assembly frame removed;

[0020] Figure 6 is the present utility model on Figure 5 a schematic diagram of the structure with the socket pins further removed on the basis of;

[0021] Figure 7 is the present utility model on Figure 6 a schematic diagram of the structure with the trip bracket further removed on the basis of;

[0022] Figure 8 is the present utility model on Figure 7 a schematic diagram of the structure with the lifting seat further removed on the basis of;

[0023] Figure 9 This is a schematic structural view of the present utility model after removing the lifting seat and the swing rod on the basis of Figure 6 ;

[0024] Figure 10 This is a schematic view of the state of the present utility model after tripping.

[0025] In the figure: 11, base; 12, upper cover; 13, grounding piece; 131, grounding end; 21, circuit board; 22, current transformer; 23, tripping coil; 24, tripping armature; 25, fourth spring; 26, test reset switch; 31, power terminal; 32, load terminal; 311, power pin; 33, socket pin; 321, load pin; 40, tripping bracket; 41, rotating port; 42, sliding notch; 50, assembly frame; 60, lifting seat; 61, lock piece notch; 62, first spring; 63, lifting rod; 70, swing seat; 71, arc-shaped notch; 72, rotating shaft; 80, lock piece; 81, through hole; 91, tripping button; 92, abutting column; 921, inclined surface; 93, third spring; 94, reset button; 95, reset rod; 951, necking notch; 96, second spring; 97, limiting hook foot. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the attached Figure 1-10 drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts belong to the scope of protection of the present utility model.

[0027] Embodiment:

[0028] As Figures 1 to 10 shown, the present utility model discloses a new type of leakage protection socket, which includes a base 11 and an upper cover 12. A circuit board 21 is arranged inside the base 11. A current transformer 22 and a tripping coil 23 are respectively installed on the left and right sides of the upper end surface of the circuit board 21. In addition, a tripping bracket 40 is arranged between the current transformer 22 and the tripping coil 23. And the base 11 is also fixedly provided with an assembly frame 50 above the tripping bracket 40. A lifting seat 60 and a swing seat 70 are arranged inside the tripping bracket 40. The lifting seat 60 is close to one side of the tripping coil 23 and is slidably arranged up and down on the tripping bracket 40. The swing seat 70 is located on the left side of the lifting seat 60 and is rotatably connected to the tripping bracket 40. Among them, a lock piece notch 61 is formed through the left and right in the lifting seat 60. A lock piece 80 is slidably arranged left and right on the lock piece notch 61. A through hole 81 is formed on the lock piece 80. The specific structure of the through hole 81 is asFigure 8 As shown in 9 9 , the left side of the locking piece 80 abuts against the swing seat 70, and a tripping armature 24 for driving the locking piece 80 to slide left and right is provided on the tripping coil 23. It should be noted here that the locking piece 80 can move up and down relative to the tripping armature 24. In the present utility model, a tripping button 91 and a reset button 94 are provided on the upper cover 12. A reset rod 95 is fixedly connected to the lower side of the reset button 94. The reset rod 95 passes through the assembly frame 50 and the lifting seat 60, and a necking opening 951 is provided at the lower end of the reset rod 95. It should be noted that the left side of the through hole 81 of the locking piece 80 is for the reset rod 95 to pass through, and the right side of the through hole 81 of the locking piece 80 is for the necking opening 951 to be clamped therein. A test reset switch 26 is provided on the lower side of the circuit board 21 on the lifting seat 60. In addition, a pressing column 92 is fixedly connected to the lower end of the tripping button 91, and an arc-shaped notch 71 that is inclined in an arc shape from left to right and downward is provided on the upper side of the swing seat 70. The lower end of the pressing column 92 has an inclined surface 921 for abutting against the arc-shaped notch 71. A first spring 62 is provided between the lifting seat 60 and the assembly frame 50. The first spring 62 is used to push the lifting seat 60 downward. In the normal state, since the right side of the through hole 81 of the locking piece 80 is stuck on the necking opening 951 of the reset rod 95, the lifting seat 60 cannot move downward.

[0029] In addition, a second spring 96 is provided between the reset button 94 and the assembly frame 50. The second spring 96 is used to push the reset button 94 upward. A third spring 93 is provided between the tripping button 91 and the upper cover 12. The third spring 93 is used to push the tripping button 91 upward so that it can be reset after being pressed. A fourth spring 25 is provided between the right end of the tripping armature 24 and the housing. The fourth spring 25 is used to push the tripping armature 24 to the left.

[0030] In the present utility model, power supply terminals 31 are electrically connected to both the front and rear sides of the current transformer 22 on the left side of the circuit board 21, and load terminals 32 are electrically connected to both the front and rear sides of the tripping coil 23 on the right side of the circuit board 21. A power supply pin 311 is provided on the current transformer 22. The power supply pin 311 is electrically connected to the power supply terminal 31 and is used to connect to an AC power supply. A socket pin 33 is provided on the assembly frame 50. The circuit board 21 has a load pin 321 electrically connected to the load terminal 32. The socket pin 33 and the load pin 321 are located above the power supply pin 311. The load terminal 3248 and the socket terminal 49 are used to connect to a load. A lifting rod 63 is provided on the lifting seat 60. The lifting rod 63 extends to the lower side of the power supply pin 311.

[0031] In the present utility model, a grounding piece 13 is provided between the base 11 and the upper cover 12. A grounding end 131 is provided on the grounding piece 13 for connecting a grounding protection wire.

[0032] The specific structure of the swing seat 70 rotatably connected to the release bracket 40 is as follows: a rotation port 41 is provided on the release bracket 40, and a rotating shaft 72 for rotatably mating with the rotation port 41 is provided on the swing seat 70; the specific structure of the lifting seat 60 movably cooperating up and down with the release bracket 40 is as follows: sliding slots 42 are provided on both the front and rear sides of the lifting seat 60 on the release bracket 40, and the lifting seat 60 movably cooperates up and down within the sliding slots 42.

[0033] In order to limit the upward positions of the release button 91 and the reset button 94, limiting hook feet 97 for limiting the upper cover 12 are integrally formed on both the release button 91 and the reset button 94.

[0034] The working principle of the present utility model:

[0035] Normal state:

[0036] When no ground fault is detected, the locking piece 80 and the release armature 24 are in the left-leaning position. The reset rod 95 passes through the through-hole 81 of the locking piece 80, and the necking port 951 of the reset rod 95 is located on the right side of the through-hole 81. At this time, the lifting seat 60 is held at a high position due to the locking piece 80, and the lifting rod 63 on the lifting seat 60 conducts between the power supply pin 311, the socket pin 33, and the load pin 321.

[0037] When a ground fault occurs:

[0038] The release coil 23 senses the ground fault current, drives the release armature 24 to move, pushes the locking piece 80 to slide to the right, disengages from the connection with the reset rod 95, and the locking piece 80 no longer restricts the position of the lifting seat 60. At this time, the lifting seat 60 moves downward under the action of the first spring 62. Since the power supply pin 311 is kept in the conducting position through the lifting rod 63 on the lifting seat 60, when the lifting seat 60 moves downward, the electrical connection between the power supply pin 311, the socket pin 33, and the load pin 321 is disconnected.

[0039] Manual release:

[0040] When the user presses the release button 91, the inclined surface 921 at the lower end of the abutting post 92 presses on the arc-shaped slot 71 of the swing seat 70. The swing seat 70 rotates around its rotating shaft 72, pushes the locking piece 80 to slide to the right, so that the reset rod 95 reaches the left side of the through-hole 81 of the locking piece 80. At this time, the first spring 62 pushes the lifting seat 60 to move downward, disconnects the electrical connection between the power supply pin 311, the socket pin 33, and the load pin 321, and presses the test reset switch 26. After the test is completed, the locking piece 80 and the release armature 24 reset to the left-leaning position, but at this time the reset rod 95 is located above the locking piece 80.

[0041] Reset operation:

[0042] When the user presses the reset button 94, the reset rod 95 moves downward through the through hole 81 of the lock piece 80. Since the lower end of the reset rod 95 has an inclined surface and the right end of the release armature 24 is the fourth spring 25, the reset rod 95 can push the lock piece 80 into the through hole 81. Then, under the push of the fourth spring 25, the necking opening 951 of the reset rod 95 is caught on the right side of the through hole 81 of the lock piece 80. When the user releases the reset button 94, the second spring 96 pushes the reset button 94 upward to complete the reset operation and restore the circuit connection.

[0043] It should be noted that: for the functions to be realized by each hardware and circuit in the present invention, there are a large number of mature technologies for support. The essence of the present invention lies in changing the structure of the release slider in the existing release operating mechanism for a specific application occasion, and does not involve changes in other hardware, internal circuits and functions.

[0044] At the same time, it should be pointed out that the terms used in the present invention, such as "front", "rear", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention 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. Therefore, it should not be construed as a limitation on the protection scope of the present invention.

[0045] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A new type of leakage protection socket, comprising a base and an upper cover, wherein a circuit board is arranged inside the base, and a current transformer and a tripping coil are respectively installed on the left and right sides of the upper end surface of the circuit board, characterized in that: A trip bracket is provided between the current transformer and the trip coil, an assembly frame is installed on the upper side of the trip bracket on the base, a lifting seat and a swing seat are provided in the trip bracket, the lifting seat is close to one side of the trip coil and is slidably arranged on the trip bracket up and down, the swing seat is located on the left side of the lifting seat and is rotatably connected to the trip bracket, a locking piece opening is provided in the lifting seat in a left-right through-hole manner, a locking piece is slidably arranged on the locking piece opening, a through opening is provided on the locking piece, the left side of the locking piece is against the swing seat, a trip armature for driving the locking piece to slide left and right is provided on the trip coil, and a trip armature for driving the locking piece to slide left and right is provided on the upper cover A trip button and a reset button are provided, a reset rod is fixedly connected to the lower side of the reset button, the reset rod passes through the assembly frame and the lifting seat, a necking opening is provided at the lower end of the reset rod, the left side of the through-opening of the locking plate is used for the reset rod to pass through, and the right side of the through-opening of the locking plate is used for the necking opening to be clamped therein, a test reset switch is provided at the lower side of the lifting seat for the circuit board, a resist column is fixedly connected to the lower end of the trip button, an arcuate notch inclined downward from left to right is provided on the upper side of the swing seat, the lower end of the resist column has an inclined surface for resisting on the arcuate notch, and a first spring is provided between the lifting seat and the assembly frame.

2. A new type of leakage protection socket according to claim 1, characterized in that: A second spring is arranged between the reset button and the assembly frame, a third spring is arranged between the release button and the upper cover, and a fourth spring is arranged between the right end of the release armature and the housing.

3. A new type of leakage protection socket according to claim 2, characterized in that: The left side of the circuit board is electrically connected to power terminals on both sides of the front and rear of the current transformer, and the right side of the circuit board is electrically connected to load terminals on both sides of the front and rear of the trip coil. The current transformer is provided with power pins, the assembly frame is provided with socket pins, and the circuit board is electrically connected to load pins, and the socket pins and the load pins are located on the upper side of the power pins.

4. A new type of leakage protection socket according to claim 3, characterized in that: The lifting seat is provided with a lifting rod, and the lifting rod extends to the lower side of the power pin.

5. A new type of leakage protection socket according to claim 1, characterized in that: A grounding plate is provided between the base and the upper cover, and a grounding terminal is provided on the grounding plate.

6. A new type of leakage protection socket according to claim 1, characterized in that: The release bracket is provided with a rotating opening, the swing seat is provided with a rotating shaft for rotatingly fitting on the rotating opening, the release bracket is provided with sliding slots on both the front and rear sides of the lifting seat, and the lifting seat is movably fitted in the sliding slots.

7. A new type of leakage protection socket according to claim 1, characterized in that: The trip button and the reset button are both integrally formed with limiting hooks for limiting the position of the upper cover.

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