Electric leakage overvoltage protector

Abstract

The utility model discloses an electric leakage overvoltage protector, which belongs to the technical field of electrical safety, and comprises a protector body, a plurality of wiring grooves are arranged on the protector body, partition plates are arranged among all the wiring grooves, the tops of the wiring grooves are in threaded connection with compression screws, and the compression screws are in threaded connection with the wiring grooves. The bottom of the wiring groove is elastically connected with a lower metal contact piece, an upper metal contact piece is fixed to the end, facing the wiring groove, of the pressing screw, and a wire clamping piece is slidably connected between the partition plates. According to the protector, the wire connection position is improved, the wire connection stability can be achieved, the loosening phenomenon cannot occur after long-time connection, and the service life is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical safety, and in particular relates to a leakage overvoltage protector. Background Art

[0002] The leakage protector, also known as the leakage switch or leakage circuit breaker, is mainly used to protect against leakage faults in the equipment and to protect people from fatal electric shock. It has overload and short-circuit protection functions. It can be used to protect the line or motor from overload and short circuit. It can also be used as an infrequent switching start of the line under normal circumstances.

[0003] When connecting the existing leakage protector, the wires connected are not only of different models and materials, but also some wires are composed of multiple strands of wire. For some conventional wires (single-strand copper, aluminum core, etc.), the wire pressing plate in the wiring hole can compress the wires well during wiring. However, for some wires that are entangled with multiple strands, as the wire pressing plate squeezes the wires, the wires will become loose, resulting in the wire pressing plate not being able to compress the wires well. Moreover, as the use time increases, the wire pressing plate may become loose, resulting in a virtual connection between the wire and the wire pressing plate, affecting the normal use of the leakage protector.

[0004] Therefore, it is necessary to invent a leakage overvoltage protector to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a leakage overvoltage protector, which improves the wire connection point, can achieve stable wire connection, and will not loosen after long-term connection, thereby extending the service life.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a leakage overvoltage protector, including a protector body, a plurality of wiring slots are provided on the protector body, partition plates are provided between all the wiring slots, a clamping screw is threadedly connected to the top of the wiring slot, a lower metal contact is elastically connected to the bottom of the wiring slot, an upper metal contact is fixed to the clamping screw toward the end of the wiring slot, and a wire clamp is slidably connected between the partition plates.

[0007] Furthermore, a groove is provided at the bottom of the wiring slot, a first spring is fixed inside the groove, and the first spring is fixed at the bottom of the lower metal contact sheet away from the end of the groove.

[0008] Furthermore, a conductive metal rod is fixed at the bottom of the lower metal contact piece, the conductive metal rod is electrically connected to the protector body, the conductive metal rod is located inside the first spring, and the conductive metal rod slides at the bottom of the groove.

[0009] Furthermore, the lower metal contact sheet is provided with a plurality of ridge grooves.

[0010] Furthermore, an insulating rubber plate is bonded to the end of the upper metal contact piece facing the lower metal contact piece, the insulating rubber plate is symmetrically arranged about the middle of the upper metal contact piece, and an elastic rubber block is fixed on the inner wall of the insulating rubber plate.

[0011] Furthermore, the wire clamp includes a support rod sliding on the partition plate, the partition plate is provided with a slide groove for the support rod to slide, an arc-shaped fixing rod is fixed on the support rod, the arc-shaped fixing rod is provided with an opening away from the end of the support rod, and opening and closing plates sliding outside the arc-shaped fixing rod are provided on both sides of the opening.

[0012] Furthermore, a sinking groove is provided on the outer wall of the arc-shaped fixing rod, a second spring is fixed to one end of the sinking groove, and the second spring is fixed to the inner wall of the opening and closing plate away from the end of the sinking groove.

[0013] Furthermore, a retractable rubber plate is bonded to the inner wall of the arc-shaped fixing rod.

[0014] The beneficial effects of the utility model are:

[0015] After the lower metal contact of the leakage overvoltage protector is screwed in with the clamping screw, the conductive metal rod is driven to move downward, and the external spring begins to be compressed. At this time, the spring has reset potential energy and resists the lower metal contact upward, thereby increasing the stability of the wire clamped between the upper metal contact and the lower metal contact. 2. A plurality of ridge grooves are provided on the lower metal contact, which make the wire clamped between the upper metal contact and the lower metal contact more stable and increase the friction force of the wire being clamped.

[0016] 3. The insulated part of the wire can be snapped into the inside of the arc-shaped fixing rod, and the opening is retractable, which is suitable for the installation of wires of different sizes. At the same time, the metal contacts are all plate-shaped, which is suitable for the installation of wires of multiple strands of silk. A retractable rubber plate is arranged inside the arc-shaped fixing rod, and the retractable rubber plate contacts the outside of the wire to fix the wire, further increasing the stability of the wire installation. At the same time, the arc-shaped fixing rod can slide freely up and down along the slide groove with the support rod, which is convenient for adjusting the position of the wire after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the leakage overvoltage protector provided by the utility model;

[0018] Figure 2 The utility model provides Figure 1 Schematic diagram of the top view;

[0019] Figure 3 The utility model provides Figure 1 Schematic diagram of the front view;

[0020] Figure 4The utility model provides Figure 3 The enlarged schematic diagram at A in the middle;

[0021] Figure 5 The utility model provides Figure 2 AA line cross-sectional view;

[0022] Figure 6 The utility model provides Figure 2 Schematic diagram of the cross-section along the BB line;

[0023] Figure 7 It is an enlarged schematic diagram of the arc-shaped fixing rod provided by the utility model.

[0024] In the figure: 1. Protector body; 2. Wiring slot; 3. Partition plate; 4. Pressing screw; 5. Lower metal contact; 6. Upper metal contact; 7. Groove; 8. Telescopic rubber plate; 9. First spring; 10. Conductive metal rod; 11. Ridge; 12. Insulating rubber plate; 13. Elastic rubber block; 14. Support rod; 15. Slide groove; 16. Arc-shaped fixing rod; 17. Opening; 18. Opening and closing plate; 19. Sinking groove; 20. Second spring. DETAILED DESCRIPTION

[0025] In order to further understand the content, features and effects of the utility model, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0026] Please also refer to Figures 1 to 7 The leakage overvoltage protector of the utility model embodiment will be described in detail below with reference to the accompanying drawings.

[0027] like Figure 1 As shown, the leakage overvoltage protector includes a protector body 1, on which a plurality of wiring slots 2 are provided, and partition plates 3 are provided between all the wiring slots 2. A clamping screw 4 is threadedly connected to the top of the wiring slot 2, and a lower metal contact 5 is elastically connected to the bottom of the wiring slot 2. An upper metal contact 6 is fixed to the clamping screw 4 toward the end of the wiring slot 2, and a wire clamp is slidably connected between the partition plates 3.

[0028] In this embodiment, the external wire is placed inside the wiring slot 2 and between the upper metal contact sheet 6 and the lower metal contact sheet 5 for conductive installation.

[0029] A groove 7 is provided at the bottom of the wiring slot 2 , a first spring 9 is fixed inside the groove 7 , and the end of the first spring 9 away from the groove 7 is fixed to the bottom of the lower metal contact sheet 5 .

[0030] A conductive metal rod 10 is fixed to the bottom of the lower metal contact piece 5 . The conductive metal rod 10 is electrically connected to the protector body 1 . The conductive metal rod 10 is located inside the first spring 9 , and the conductive metal rod 10 slides at the bottom of the groove 7 .

[0031] Meanwhile, a plurality of ridge grooves 11 are provided on the lower metal contact sheet 5 , and the ridge grooves 11 make the wire clamped between the upper metal contact sheet 6 and the lower metal contact sheet 5 more stable, thereby increasing the friction force of the wire being clamped.

[0032] After the clamping screw 4 is screwed in, the lower metal contact 5 drives the conductive metal rod 10 to move downward, and at the same time the external spring begins to be compressed. At this time, the spring has reset potential energy and resists the lower metal contact 5 upward, thereby increasing the stability of the wire clamped between the upper metal contact 6 and the lower metal contact 5.

[0033] At the same time, an insulating rubber plate 12 is bonded to the end of the upper metal contact 6 facing the lower metal contact 5. The insulating rubber plate 12 is symmetrically arranged about the middle of the upper metal contact 6. An elastic rubber block 13 is fixed on the inner wall of the insulating rubber plate 12. After the clamping screw 4 is screwed in, the clamping screw 4 drives the upper metal contact 6 to move downward. After moving downward, the insulating rubber plate 12 on the side of the upper metal contact 6 is located on the side of the lower metal contact 5. At the same time, the elastic rubber block 13 on the inner wall of the insulating rubber plate 12 conflicts with the side of the lower metal contact 5, further increasing the installation stability of the wire.

[0034] The insulating rubber plate 12 and the elastic rubber block 13 are both made of insulating TPU material and have good elasticity.

[0035] As an implementation mode of this embodiment, after the wire is installed, the insulating layer outside the wire is further clamped and fixed, and a wire clamp is set to clamp it, wherein the wire clamp includes a support rod 14 sliding on the partition plate 3, and the partition plate 3 is provided with a slide groove 15 for the support rod 14 to slide, and an arc-shaped fixing rod 16 is fixed on the support rod 14, and an opening 17 is provided at the end of the arc-shaped fixing rod 16 away from the support rod 14, and opening and closing plates 18 sliding on the outside of the arc-shaped fixing rod 16 are provided on both sides of the opening 17.

[0036] A sinking groove 19 is provided on the outer wall of the arc-shaped fixing rod 16 , a second spring 20 is fixed to one end of the sinking groove 19 , and the end of the second spring 20 away from the sinking groove 19 is fixed to the inner wall of the opening and closing plate 18 .

[0037] At the same time, a retractable rubber plate 8 is bonded to the inner wall of the arc-shaped fixing rod 16 .

[0038] Then, the wire can be directly pressed to be clamped into the inside of the arc-shaped fixing rod 16. When clamped, the two opening and closing plates 18 at the upper end of the arc-shaped fixing rod 16 slide along the outer wall of the arc-shaped fixing rod 16. After the wire enters the inside of the arc-shaped fixing rod 16, the opening and closing plates 18 cover the opening 17 under the rebound effect of the second spring 20, and a telescopic rubber plate 8 is provided inside the arc-shaped fixing rod 16. The telescopic rubber plate 8 is made of the same material as the aforementioned insulating rubber plate 12. The telescopic rubber plate 8 contacts the outside of the wire to fix the wire. At the same time, the arc-shaped fixing rod 16 can slide freely up and down along the slide groove 15 with the support rod 14, so as to facilitate the position adjustment of the wire after installation.

[0039] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A leakage overvoltage protector, comprising a protector body (1), characterized in that: The protector body (1) is provided with a plurality of wiring slots (2), and partition plates (3) are provided between all the wiring slots (2). The top of the wiring slot (2) is threadedly connected with a clamping screw (4), and the bottom of the wiring slot (2) is elastically connected with a lower metal contact (5). The clamping screw (4) is fixed with an upper metal contact (6) toward the end of the wiring slot (2), and a wire clamp is slidably connected between the partition plates (3).

2. The leakage overvoltage protector according to claim 1, characterized in that: The bottom of the wiring slot (2) is provided with a groove (7), a first spring (9) is fixed inside the groove (7), and the end of the first spring (9) away from the groove (7) is fixed to the bottom of the lower metal contact sheet (5).

3. The leakage overvoltage protector according to claim 2, characterized in that: A conductive metal rod (10) is fixed at the bottom of the lower metal contact sheet (5), the conductive metal rod (10) is electrically connected to the protector body (1), the conductive metal rod (10) is located inside the first spring (9), and the conductive metal rod (10) slides at the bottom of the groove (7).

4. The leakage overvoltage protector according to claim 2, characterized in that: The lower metal contact sheet (5) is provided with a plurality of ridge grooves (11).

5. The leakage overvoltage protector according to claim 1, characterized in that: An insulating rubber plate (12) is bonded to the end of the upper metal contact (6) facing the lower metal contact (5), the insulating rubber plate (12) is symmetrically arranged about the middle of the upper metal contact (6), and an elastic rubber block (13) is fixed on the inner wall of the insulating rubber plate (12).

6. The leakage overvoltage protector according to claim 1, characterized in that: The wire clamping part comprises a support rod (14) sliding on the partition plate (3), a slide groove (15) for the support rod (14) to slide is provided on the partition plate (3), an arc-shaped fixing rod (16) is fixed on the support rod (14), an opening (17) is provided at the end of the arc-shaped fixing rod (16) away from the support rod (14), and opening and closing plates (18) sliding outside the arc-shaped fixing rod (16) are provided on both sides of the opening (17).

7. The leakage overvoltage protector according to claim 6, characterized in that: A sinking groove (19) is provided on the outer wall of the arc-shaped fixing rod (16), a second spring (20) is fixed to one end of the sinking groove (19), and the end of the second spring (20) away from the sinking groove (19) is fixed to the inner wall of the opening and closing plate (18).

8. The leakage overvoltage protector according to claim 6, characterized in that: A telescopic rubber plate (8) is bonded to the inner wall of the arc-shaped fixing rod (16).

Images