Leakage protector

Abstract

The utility model discloses a leakage protector which comprises a shell, a leakage protection tripping assembly is arranged in the shell, the leakage protection tripping assembly comprises a tripping support arranged in the shell, and the tripping support is provided with a fixed conducting strip, an elastic movable conducting strip and a support sliding groove which is vertically and obliquely arranged. A cross arm capable of sliding along the support sliding groove to drive the movable conducting strip to be connected or disconnected with the fixed conducting strip is arranged in the support sliding groove, a tripping relay assembly and a driving piece capable of rotating in the tripping support are arranged in the tripping support, and one end of the driving piece is connected with the cross arm to drive the cross arm to slide. A tripping iron core which is controlled by the tripping relay assembly to move transversely and is connected with the other end of the driving part to drive the driving part to rotate is arranged in the tripping relay assembly, and a vertical and inclined support sliding groove is formed in the tripping support, so that friction force between the cross arm and the tripping support is reduced in the tripping and resetting process of the leakage protector, and the leakage protector is prevented from being damaged. The energy loss is reduced, and the flexibility and reliability of the mechanism are improved.

Description

Technical Field

[0001] The utility model relates to the electrical field, in particular to a leakage protector. Background Art

[0002] With the widespread use of household appliances and the continuous improvement of people's awareness of electricity safety, the application of leakage protectors is becoming more and more popular. In the existing leakage protectors, there is such a problem: during the working process of the leakage protector, the tripping iron core pushes the tripping device, causing the tripping device to pivot around the fulcrum, driving the moving contact arm to move, and then the moving electric contact and the electrostatic contact are in contact or separated, so that the circuit is connected or disconnected. However, since a guide groove that cooperates with the tripping device is provided in the tripping bracket, and the angle of the guide groove of the existing leakage protector is usually set to be perpendicular to the horizontal plane, this also causes the tripping device to be subjected to a large friction force from the tripping bracket during the tripping or resetting process, which is easy to accelerate the wear of the tripping device, resulting in insufficient speed or sensitivity. When the tripping device needs to be attracted, due to the hindrance of friction, the actual required attraction force will increase, and the attraction time will be extended. This delay may cause the leakage current to continue to flow, increasing the risk of electrical accidents.

[0003] In addition, increased friction may also cause the release to generate more heat during operation. The accumulation of heat may cause aging, degradation of material properties and other problems, further affecting the performance and reliability of the leakage protector. In addition, greater friction may also cause additional mechanical stress to other components in the leakage protector, such as the trip bracket, increasing the risk of failure. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a leakage protector, which can reduce the friction between the crossarm and the tripping bracket during the tripping and resetting process, improve the flexibility of the mechanism, and require less suction force, so that the product can be attracted at a lower voltage.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A leakage protector, characterized in that it includes a shell, a leakage protection tripping assembly is arranged in the shell, the leakage protection tripping assembly includes a tripping bracket arranged in the shell, the tripping bracket is provided with a fixed conductive sheet, an elastic movable conductive sheet and a vertical and inclined bracket slide groove, the bracket slide groove is provided with a cross arm that can slide along the bracket slide groove to drive the movable conductive sheet to connect or disconnect with the fixed conductive sheet, the tripping bracket is provided with a tripping relay assembly and a driving member that can rotate in the tripping bracket and one end of which is connected to the cross arm to drive the cross arm to slide, and the tripping relay assembly is provided with a tripping iron core that is controlled by the tripping relay assembly to move laterally and is connected to the other end of the driving member to drive the driving member to rotate.

[0007] The leakage protector as described above is characterized in that the driving member is engaged with the tripping core, and a driving member slot engaged with the tripping core is provided on the driving member.

[0008] The leakage protector as described above is characterized in that a driving member is provided with a driving member protrusion, and a cross arm is provided with a cross arm groove that cooperates with the driving member protrusion to drive the cross arm to move when the driving member rotates.

[0009] The leakage protector as described above is characterized in that the driving member is provided with a driving member fulcrum which can rotate in the tripping bracket, and the tripping bracket is provided with a bracket limiting groove for the driving member fulcrum to be embedded and rotated.

[0010] The leakage protector as described above is characterized in that when the tripping core is not triggered to move by the tripping relay assembly, the length direction of the moving conductive sheet is perpendicular to the length direction of the bracket sliding slot.

[0011] A leakage protector as described above is characterized in that: the tripping relay assembly includes a relay coil, a magnetic conductive core, a magnetic conductive frame and a magnetic conductive plate, the magnetic conductive core is arranged at the end of the relay coil, the tripping core is arranged in the relay coil and extends from the front end of the relay coil, and the magnetic conductive frame and the magnetic conductive plate crimp the relay coil therebetween.

[0012] A leakage protector as described above is characterized in that: a fixed conductive sheet contact is provided on the fixed conductive sheet, and a moving conductive sheet contact is provided on the moving conductive sheet. When the fixed conductive sheet and the moving conductive sheet are in a connected state, the fixed conductive sheet contact is connected to the moving conductive sheet contact. The fixed conductive sheet includes L fixed conductive sheet and N fixed conductive sheet, and the moving conductive sheet includes L moving conductive sheet and N moving conductive sheet.

[0013] The leakage protector as described above is characterized in that a bracket positioning groove for inserting the movable conductive sheet is provided on the trip bracket.

[0014] The leakage protector as described above is characterized in that the leakage protection tripping assembly includes a leakage detection assembly, and the leakage detection assembly is provided with a wiring assembly with one end connected to the moving conductive sheet and the other end connected to the output wiring terminal of the leakage protector.

[0015] A leakage protector as described above is characterized in that: the leakage protection tripping component includes a control circuit board which is respectively connected to the leakage detection component and the tripping relay component, controls the tripping relay component to work after the leakage detection component detects a leakage signal, and has reset and test functions, and the control circuit board is connected to a reset button component and a test button component.

[0016] The beneficial effects of the utility model are:

[0017] The utility model is provided with a vertical and inclined bracket slide groove on the tripping bracket, and a cross arm which can slide along the bracket slide groove to drive the movable conductive sheet to connect or disconnect with the fixed conductive sheet is provided in the bracket slide groove, so that during the tripping and resetting process of the leakage protector, the friction between the cross arm and the tripping bracket is reduced, the energy loss is reduced, the flexibility and reliability of the mechanism are improved, unnecessary shaking or twisting is reduced, the demand for attraction force is reduced, and the product can be attracted at a lower voltage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the utility model;

[0019] Figure 2 This is one of the exploded views of the utility model;

[0020] Figure 3 This is the second exploded view of the utility model;

[0021] Figure 4 This is an exploded view of the trip bracket and leakage detection assembly of the utility model;

[0022] Figure 5 This is an exploded view of the trip bracket, cross arm, drive component and trip relay assembly of the utility model;

[0023] Figure 6 It is a cross-sectional view of the utility model. DETAILED DESCRIPTION

[0024] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the present invention are further described below in conjunction with the accompanying drawings and through specific implementation methods. It is understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for the convenience of description, only the parts related to the present invention are shown in the accompanying drawings, rather than all of them.

[0025] like Figure 1-6 As shown, a leakage protector comprises a shell 1, in which a leakage protection tripping assembly is arranged, the leakage protection tripping assembly comprises a tripping bracket 2 arranged in the shell 1, on which a fixed conductive sheet 3, an elastic movable conductive sheet 4 and a bracket slide groove 21 arranged vertically and obliquely are arranged, in which a cross arm 5 which can slide along the bracket slide groove 21 to drive the movable conductive sheet 4 to connect or disconnect with the fixed conductive sheet 3 is arranged, in which a tripping relay assembly 6 and a driving member 7 which can rotate in the tripping bracket 2 and one end of which is connected to the cross arm 5 to drive the cross arm 5 to slide are arranged, in which a tripping iron core 8 which is controlled by the tripping relay assembly 6 to move laterally and is connected to the other end of the driving member 7 to drive the driving member 7 to rotate is arranged.

[0026] When powered on, the trip relay assembly 6 is powered on to drive the trip core 8 to move backward, thereby pulling the driving member 7 to rotate in the trip bracket 2, thereby driving the cross arm 5 to slide downward along the bracket slide slot 21, so that the cross arm 5 pushes the moving conductive sheet 4 to move downward and connect with the fixed conductive sheet 3 to energize; when leakage occurs, the trip relay assembly 6 is controlled to cut off the power, at this time, the trip relay assembly 6 does not pull the trip core 8 to move backward, after the driving member 7 loses the force of being pulled backward by the trip core 8, the moving conductive sheet 4 drives the cross arm 5 to move upward and reset under its own elastic force, and separates from the fixed conductive sheet 3 to cut off the power. In this case, the bracket slide slot 21 is tilted, so that during the tripping and resetting process of the leakage protector, the friction between the cross arm 5 and the trip bracket 2 is reduced, the energy loss is reduced, the flexibility and reliability of the mechanism are improved, unnecessary shaking or distortion is reduced, the demand for suction force is reduced, so that the product can be sucked at a lower voltage, and it is also convenient to cut off the power through the self-elastic force of the moving conductive sheet 4 in the event of leakage.

[0027] like Figure 5-6 As shown, the driving member 7 is engaged with the tripping core 8, and a driving member slot 72 engaged with the tripping core 8 is provided on the driving member 7. The structure is simple, and the tripping core 8 and the driving member 7 are tightly connected.

[0028] like Figure 5-6 As shown, the driving member 7 is provided with a driving member protrusion 73, and the cross arm 5 is provided with a cross arm groove 51 that cooperates with the driving member protrusion 73 so that the cross arm 5 is driven to move when the driving member 7 rotates. When the driving member 7 rotates, the driving member protrusion 73 rotates with the driving member 7, thereby cooperating with the cross arm groove 51 to drive the cross arm 5 to move downward along the bracket slide groove 21.

[0029] like Figure 4-6 As shown, the driving member 7 is provided with a driving member fulcrum 71 that can rotate in the trip bracket 2, and the trip bracket 2 is provided with a bracket limiting groove 22 for the driving member fulcrum 71 to be embedded and rotated. When the trip core 8 pulls the driving member 7 to move backward, the driving member 7 rotates in the trip bracket 2 under the cooperation of the driving member fulcrum 71 and the bracket limiting groove 22.

[0030] like Figure 2-4 As shown, when the trip core 8 is not triggered to move by the trip relay assembly 6, the length direction of the moving conductive sheet 4 is perpendicular to the length direction of the bracket slide slot 21, reducing the friction between the cross arm 5 and the trip bracket 2, reducing energy loss, improving the flexibility and reliability of the mechanism, and also facilitating power off through the elastic force of the moving conductive sheet 4 itself in the event of leakage.

[0031] like Figure 5-6As shown, the trip relay assembly 6 includes a relay coil 61, a magnetic conductive core 62, a magnetic conductive frame 63 and a magnetic conductive plate 64. The magnetic conductive core 62 is arranged at the end of the relay coil 61, and the trip core 8 is arranged in the relay coil 61 and extends from the front end of the relay coil 61. The magnetic conductive frame 63 and the magnetic conductive plate 64 press the relay coil 61 therebetween to improve the working efficiency of the magnetic field. After power is turned on, the relay coil 61 is energized to generate a magnetic field, so that the magnetic conductive core 62 attracts the trip core 8 and moves backward.

[0032] like Figure 2-6 As shown, a fixed conductive sheet contact 31 is provided on the fixed conductive sheet 3, and a moving conductive sheet contact 41 is provided on the moving conductive sheet 4. When the fixed conductive sheet 3 and the moving conductive sheet 4 are in a connected state, the fixed conductive sheet contact 31 is connected to the moving conductive sheet contact 41, so that the fixed conductive sheet 3 and the moving conductive sheet 4 are in contact and energized. The fixed conductive sheet 3 includes an L fixed conductive sheet and an N fixed conductive sheet, and the moving conductive sheet 4 includes an L moving conductive sheet and an N moving conductive sheet.

[0033] like Figure 2-5 As shown, the trip bracket 2 is provided with a bracket positioning groove 23 for the movable conductive sheet 4 to be inserted into, so that the movable conductive sheet 4 is positioned and installed on the trip bracket 2 .

[0034] like Figure 2-6 As shown, the leakage protection tripping assembly includes a leakage detection assembly 9, in which a wiring assembly 10 is provided at one end connected to the moving conductive sheet 4 and at the other end connected to the output wiring terminal 14 of the leakage protector; the leakage protection tripping assembly includes a control circuit board 11 which is respectively connected to the leakage detection assembly 9 and the tripping relay assembly 6, and controls the tripping relay assembly 6 to work after the leakage detection assembly 9 detects a leakage signal and has a reset and test function, and the control circuit board 11 is connected to a reset button assembly 12 and a test button assembly 13. When the leakage detection assembly 9 detects leakage, it sends a leakage signal to the control circuit board 11, and the control circuit board 11 controls the tripping relay assembly 6 to cut off power and not adsorb to drive the tripping iron core 8 to move backward; at the same time, the user can also reset the tripping relay assembly 6 and restore power through the reset button assembly 12, and can also perform a leakage test through the test button assembly 13.

[0035] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention specification and drawings under the utility model concept, or directly or indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A leakage protector, characterized in that: The invention comprises a housing (1), wherein a leakage protection tripping assembly is arranged in the housing (1), wherein the leakage protection tripping assembly comprises a tripping bracket (2) arranged in the housing (1), wherein a fixed conductive sheet (3), a movable conductive sheet (4) having elasticity, and a bracket slide groove (21) arranged vertically and obliquely are arranged on the tripping bracket (2), wherein a cross arm (5) which can slide along the bracket slide groove (21) to drive the movable conductive sheet (4) to connect or disconnect with the fixed conductive sheet (3) is arranged in the bracket slide groove (21), wherein a tripping relay assembly (6) and a driving member (7) which can rotate in the tripping bracket (2) and one end of which is connected to the cross arm (5) to drive the cross arm (5) to slide are arranged in the tripping bracket (2), and wherein a tripping iron core (8) which is controlled by the tripping relay assembly (6) to move horizontally and is connected to the other end of the driving member (7) to drive the driving member (7) to rotate is arranged in the tripping relay assembly (6).

2. A leakage protector according to claim 1, characterized in that: The driving member (7) is engaged with the release iron core (8), and a driving member engaging groove (72) engaged with the release iron core (8) is provided on the driving member (7).

3. A leakage protector according to claim 1 or 2, characterized in that: The driving member (7) is provided with a driving member protrusion (73), and the cross arm (5) is provided with a cross arm groove (51) which cooperates with the driving member protrusion (73) so that when the driving member (7) rotates, the cross arm (5) is driven to move.

4. A leakage protector according to claim 1, characterized in that: The driving member (7) is provided with a driving member fulcrum (71) which can rotate in the tripping bracket (2), and the tripping bracket (2) is provided with a bracket limiting groove (22) for the driving member fulcrum (71) to be embedded and rotated.

5. The leakage protector according to claim 1, characterized in that: When the tripping iron core (8) is not triggered to move by the tripping relay assembly (6), the length direction of the movable conductive sheet (4) is perpendicular to the length direction of the bracket sliding slot (21).

6. A leakage protector according to claim 1, characterized in that: The tripping relay assembly (6) comprises a relay coil (61), a magnetic conductive core (62), a magnetic conductive frame (63) and a magnetic conductive plate (64); the magnetic conductive core (62) is arranged at the end of the relay coil (61); the tripping iron core (8) is arranged in the relay coil (61) and extends from the front end of the relay coil (61); the magnetic conductive frame (63) and the magnetic conductive plate (64) press the relay coil (61) therebetween.

7. A leakage protector according to claim 1, characterized in that: The fixed conductive sheet (3) is provided with a fixed conductive sheet contact (31), and the movable conductive sheet (4) is provided with a movable conductive sheet contact (41). When the fixed conductive sheet (3) and the movable conductive sheet (4) are in a connected state, the fixed conductive sheet contact (31) is connected to the movable conductive sheet contact (41). The fixed conductive sheet (3) includes an L fixed conductive sheet and an N fixed conductive sheet, and the movable conductive sheet (4) includes an L movable conductive sheet and an N movable conductive sheet.

8. The leakage protector according to claim 1, characterized in that: The trip bracket (2) is provided with a bracket positioning groove (23) for inserting the movable conductive sheet (4).

9. The leakage protector according to claim 1, characterized in that: The leakage protection tripping assembly comprises a leakage detection assembly (9), wherein a wiring assembly (10) is provided in the leakage detection assembly (9), one end of which is connected to a moving conductive sheet (4) and the other end of which is connected to an output wiring terminal (14) of a leakage protector.

10. A leakage protector according to claim 9, characterized in that: The leakage protection tripping component comprises a control circuit board (11) which is respectively connected to a leakage detection component (9) and a tripping relay component (6) and controls the tripping relay component (6) to work after the leakage detection component (9) detects a leakage signal and has a reset and test function. The control circuit board (11) is connected to a reset button component (12) and a test button component (13).

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