A leakage protector for safe electricity use which is convenient to install

Abstract

This invention relates to the field of residual current device (RCD) technology, specifically a safe RCD that is easy to install. The RCD includes a main body with multiple inlet holes for connecting wires on its top outer side. A restraining mechanism is fixed to the top and bottom of each inlet hole. The restraining mechanism includes a support plate with two rotatable connecting rods at one end. A rubber wheel rotates between the two connecting rods. In this invention, the two rubber wheels increase the pulling resistance of the wires, reducing the occurrence of wire pull-out. When the wire is pulled by a large force and moves, the copper wire moves into the elastic bag, preventing electric shock and improving the safety of the RCD. Simultaneously, the rubber wheels rotate and retract the traction belt as the wire moves. The traction belt pulls the elastic bag, causing the outer side of the elastic bag to tighten. The user can easily observe the tension of the elastic bag to check if the wire has pulled out of its installation position.

Description

Technical Field

[0001] This invention relates to the field of residual current device (RCD) technology, specifically to an RCD that is easy to install and ensures safe electricity use. Background Technology

[0002] A residual current device (RCD) is a safety protection device in a circuit. It detects the residual current in the circuit, which is the difference between the live wire current and the neutral wire current. When this difference exceeds a preset value, the RCD will quickly cut off the circuit to prevent the current from passing through the human body or other conductors and causing harm. During use, the live wire and neutral wire are fixed in the inlet at the top of the RCD by fixing bolts. The live wire is responsible for transmitting electrical energy from the power source to the load, and the neutral wire is responsible for the current flowing back from the load to the power source.

[0003] During wiring installation, when multiple wires need to be connected to the residual current device (RCD), the user holds multiple wires and distributes them to the corresponding inlets. However, the inlet lacks a structure to restrain the wires, causing the wires inserted into the inlet to shift or come out of the inlet. The user then has to repeatedly plug the wires into the inlet. During circuit construction or maintenance, workers may accidentally pull on the wires, especially in narrow or difficult-to-operate spaces. If the live wire is pulled out of the inlet, it will be exposed to the outside, which can easily lead to electric shock due to human contact, posing a safety hazard. Summary of the Invention

[0004] The purpose of this invention is to provide a safe and easy-to-install residual current device (RCD) for electrical use. Two rubber wheels increase the pulling resistance of the conductor, reducing the occurrence of conductor pull-out. When the conductor is pulled by a large force and moves, the copper wires of the conductor move into the elastic bag for protection, preventing electric shock accidents and improving the safety of the RCD. Simultaneously, the rubber wheels rotate and retract the traction belt as the conductor moves. The traction belt pulls the elastic bag, causing the outer side of the elastic bag to tighten. This tension serves as a warning to the user to check if the conductor has pulled out of the installation position, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A leakage current protection device that is easy to install and ensures safe electricity use includes:

[0007] The main body of the residual current device (RCD) has multiple inlet holes on its top.

[0008] Two binding mechanisms are provided, which are fixed at the top and bottom of the inlet hole respectively. Each binding mechanism includes a support plate, one end of which has two connecting rods that rotate, and a rubber wheel that rotates between the two connecting rods.

[0009] Elastic bag, one end is arranged in the wire inlet hole, is used for copper wire on the insulation protection wire, the open top and bottom of the elastic bag are fixed with two traction belts, the traction belts are fixed with rubber wheels;

[0010] T-shaped block, the number is two, can be detachably fixed in the wire inlet hole, is used for limiting and fixing the elastic bag;

[0011] Protective shell, fixed outside the wire inlet hole, is used for protecting the restraint mechanism.

[0012] Further, one end of the support plate is provided with a connecting shaft, a torsion spring is arranged between the connecting shaft and the support plate, and the two ends of the connecting shaft are fixedly connected with corresponding connecting rods.

[0013] Further, one end of the support plate is fixed with a limiting block, and one end of the connecting rod is rotationally abutted with the limiting block.

[0014] Further, a ring-shaped groove is formed in the middle of the rubber wheel, and the two ends of the rubber wheel are fixedly wound with multiple traction belts.

[0015] Further, the support plate is fixedly connected with the leakage protector body, and a slot-shaped hole is formed in the middle of the support plate.

[0016] Further, a circular hole is formed in one end of the elastic bag, the circular hole can be elastically deformed, and the elastic bag is made of insulating elastic material.

[0017] Further, the leakage protector body is rotatably connected with a fixing screw outside the wire inlet hole, and the leakage protector body is rotatably provided with a mechanical handle outside.

[0018] Further, the open end of the protective shell is detachably fixed with a transparent plate, and the outer side of the leakage protector body is fixed with a rectangular frame for mounting and fixing the protective shell.

[0019] Further, one end of the T-shaped block is fixedly connected with the elastic bag, and the other end of the T-shaped block is slidably connected with the wire inlet hole.

[0020] Further, the inner top and the inner bottom of the wire inlet hole are provided with sliding grooves, the sliding grooves are slidably connected with the T-shaped block, and the T-shaped block is detachably and rotatably fixed with one end of the sliding groove through screws.

[0021] Compared with the prior art, the beneficial effects of the present application are:

[0022] 1. Two support plates are symmetrically fixed on the outside of the inlet hole. The support plates have two connecting rods that rotate via a connecting shaft facing the opening of the inlet hole. Rubber wheels rotate between the two connecting rods. When the wire is installed and inserted into the inlet hole, the two rubber wheels can directionally transport the wire, so that the copper wire end of the wire can be accurately moved to the installation position. When the wire is pre-inserted into the inlet hole for installation, the elastic force of the torsion spring drives the connecting shaft to move the connecting rods away from the support plates, thereby causing the two rubber wheels to clamp and fix the wire to be installed, preventing the wire from falling out of the inlet hole.

[0023] 2. By fixing two T-shaped blocks inside the inlet hole, an elastic bag is fixed between the two T-shaped blocks and the rubber wheel. The elastic bag is placed on the exposed copper wire end of the conductor, which can protect the copper wire in the rest of the position except the installation position. When the conductor is accidentally pulled off and the copper wire leaves the installation position of the inlet hole, the exposed copper wire can move into the bag with the sealed end of the elastic bag. The inward flipping elastic bag completely protects the copper wire, preventing the copper wire from being exposed to the outside after the conductor is pulled off. In addition, the elastic bag is made of insulating material, which also helps to prevent electric shock caused by human contact.

[0024] 3. During accidental pulling of the conductor, the conductor will move away from the rubber wheel. During this movement, the conductor will provide friction to the rubber wheel, causing it to move outward. Under the action of friction, the two rubber wheels tend to move outward. Since the rubber wheels are supported on the outside of the conductor by the connecting rod, the tendency of the rubber wheels to move outward will make the two rubber wheels clamp and fix the conductor more firmly, thereby increasing the resistance to accidental pulling of the conductor and reducing the risk of the conductor being pulled off.

[0025] 4. When the conductor is pulled by an external force, the outward movement of the conductor will cause the rubber wheel in contact with it to rotate. The rotation of the rubber wheel will retract the traction belt, causing the traction belt to tension the elastic bag between the rubber wheel and the T-block. This will keep the elastic bag in a taut state. Users can observe whether the elastic bag is taut and taut through the protective shell and the slotted hole. If the elastic bag is taut and taut, it means that the conductor is being pulled by an external force, and it is necessary to check whether the conductor has been pulled out of the inlet hole installation position. If the elastic bag is slack, it means that the conductor is not being pulled by an external force, and it is not necessary to check whether the conductor has become loose due to pulling. This helps users to judge whether the conductor has been pulled by an external force from the appearance. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the invention. Figure 1 ;

[0027] Figure 2 This is a schematic diagram of the overall structure of the invention. Figure 2 ;

[0028] Figure 3 is the schematic diagram of the wire inlet hole outside structure in the application;

[0029] Figure 4 is the schematic diagram of the binding mechanism, elastic bag and T-shaped block structure in the application;

[0030] Figure 5 is the schematic diagram of the elastic bag internal structure in the application;

[0031] Figure 6 is the schematic diagram of the binding mechanism structure in the application;

[0032] Figure 7 is the schematic diagram of the elastic bag structure in the application;

[0033] Figure 8 is the schematic diagram of the copper wire main body pulled out to the elastic bag internal structure in the application.

[0034] In the figure: 100, leakage protector main body; 110, wire inlet hole; 111, sliding groove; 120, rectangular frame; 130, fixed bolt; 140, mechanical handle; 150, experiment button; 160, closing button; 200, binding mechanism; 210, support plate; 211, connecting shaft; 212, limiting block; 213, slot-shaped hole; 220, connecting rod; 230, rubber wheel; 300, elastic bag; 310, traction belt; 320, round hole; 400, T-shaped block; 500, protective shell; 510, transparent plate; 600, wire main body; 610, copper wire main body. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0036] Embodiment one, please refer to Figure 1 - Figure 8The embodiment of the application discloses a safe electricity leakage protector convenient to install, which comprises a leakage protector main body 100, a plurality of wire inlet holes 110 for connecting wires are formed in the top outer side of the leakage protector main body 100, a binding mechanism 200 is fixed to the top and the bottom of the outer side of the wire inlet hole 110, the binding mechanism 200 comprises a support plate 210, two connecting rods 220 are rotatably arranged at one end of the support plate 210, a rubber wheel 230 is rotatably arranged between the two connecting rods 220, an elastic bag 300 is inserted into the wire inlet hole 110, the elastic bag 300 is used for insulating and protecting copper wires on the wire, two traction belts 310 are fixed to the top and the bottom of the open top of the elastic bag 300, the traction belts 310 are fixedly wound on the rubber wheel 230, a T-shaped block 400 is fixed to the top surface and the bottom surface of the middle part of the elastic bag 300, the T-shaped block 400 is detachably connected with the wire inlet hole 110, and a protective shell 500 for protecting the binding mechanism 200 is detachably fixed to the outer side of the leakage protector main body 100.

[0037] Specifically, the binding mechanism 200 is fixed to the outer side of the wire inlet hole 110, the connecting rod 220 on the binding mechanism 200 is inclined and holds the two rubber wheels 230 to clamp the wire, accidental pulling of the wire will make the wire move outward with the two rubber wheels 230, and then the connecting rod 220 will rotate outward, so that the two rubber wheels 230 will clamp the wire more firmly, the two rubber wheels 230 increase the pulling resistance of the wire, and to a certain extent, the occurrence of wire pulling off is reduced, when the wire is pulled with a large force and the rubber wheel 230 cannot hinder the movement of the wire, the copper wire at the wire pulling-off position moves to the inside of the elastic bag 300, the elastic bag 300 can insulate and protect the exposed copper wire, prevent electric shock accidents, improve the safety of the leakage protector, and the rubber wheel 230 will rotate and wind the traction belt 310 when the wire moves, the traction belt 310 pulls the elastic bag 300 to make the outer side of the elastic bag 300 tensioned, the user can observe the tensioning phenomenon of the elastic bag 300 to check whether the wire is pulled off from the installation position in time, so that the functions of preventing the wire from being pulled off, protecting the copper wire of the wire and assisting the user in judging whether the wire is pulled are combined, and the safe use of the leakage protector is achieved.

[0038] As Figure 3 , Figure 5 and Figure 6As shown, in this embodiment, a connecting shaft 211 is rotatably mounted on one end of the support plate 210. A torsion spring is sleeved between the connecting shaft 211 and the support plate 210. The two ends of the connecting shaft 211 are fixedly connected to the corresponding connecting rods 220. After the wire is inserted between the two rubber wheels 230, the elastic force of the torsion spring drives the connecting shaft 211 to rotate with the connecting rod 220 away from the support plate 210, so that the rubber wheel 230 at the bottom of the connecting rod 220 can abut against the wire, assisting the wire to move smoothly towards the inlet hole 110 and increasing the resistance to the wire moving away from the inlet hole 110.

[0039] In this embodiment, when it is necessary to remove the copper wire end of the conductor and the elastic bag 300 from the inlet hole 110, the rubber wheel 230 can be turned by hand to release the traction belt 310, thereby slackening the elastic bag 300. The screws on the two T-blocks 400 can be loosened and removed from the inlet hole 110. Then, the connecting rod 220 can be rotated towards the inlet hole 110 so that the rubber wheel 230 no longer clamps the conductor, and the conductor and the elastic bag 300 can be moved out of the inlet hole 110 together.

[0040] like Figure 6 As shown, in this embodiment, a limiting block 212 is fixed at one end of the support plate 210, and one end of the connecting rod 220 rotates against the limiting block 212. When no wire is installed between the two rubber wheels 230, the torsion spring will drive the connecting shaft 211 to rotate the connecting rod 220 toward the limiting block 212. The limiting block 212 can make the connecting rod 220 rotate and stay in the vertical direction.

[0041] like Figure 4 As shown, in this embodiment, the rubber wheel 230 has an annular groove in the middle. The annular groove can match the cylindrical shape of the wire, so that the two rubber wheels 230 firmly contact the wire. Both ends of the rubber wheel 230 are wrapped and fixed with multiple rolls of traction belt 310. In this way, the rubber wheel 230 can be manually rotated to release the longer traction belt 310, so that the elastic bag 300 can move out of the inlet hole 110 along with the wire.

[0042] like Figure 4 As shown, in this embodiment, the support plate 210 is fixedly connected to the main body 100 of the leakage current protection device. A slotted hole 213 is provided through the middle of the support plate 210. The user can observe whether the elastic bag 300 is in a taut state through the slotted hole 213 to determine whether the wire is being pulled by an external force.

[0043] In the embodiment, after the user opens the transparent plate 510 of the protective shell 500, the user can use an electric pen or other rod-shaped tool to test whether the outside of the elastic bag 300 is always in a tension state by poking through the slot-shaped hole 213. If the outside of the elastic bag 300 is always in a tension state, it indicates that the wire is too tight during installation, and the connecting wire needs to be re-loosened.

[0044] As shown in Figure 7 , in the embodiment, one end of the elastic bag 300 is provided with a circular hole 320. The circular hole 320 can be elastically deformed. When the wire is inserted into the installation position inside the wire inlet hole 110 through the elastic bag 300, the deformed circular hole 320 can meet the requirement of the arc-shaped twisted copper wire passing through, so that the copper wire passes through the elastic bag 300. When the copper wire is pulled out and moves in the direction of the elastic bag 300, the twisted copper wire cannot enter the inside of the elastic bag 300 from the position of the circular hole 320, and the elastic bag 300 will be turned from the bottom to the inside to make the copper wire position of the wire enter the elastic bag 300. The elastic bag 300 is made of an insulating elastic material, and the specific material can be polyurethane material in the prior art. The selection of the specific material is not described in detail.

[0045] In the embodiment, when the wire has been pulled out, the wire can be manually pushed in the direction of the wire inlet hole 110, so that the copper wire position of the wire stored in the inside of the elastic bag 300 is re-transferred to the installation position of the wire inlet hole 110.

[0046] As shown in Figure 1 and Figure 2 , in the embodiment, the leakage protector body 100 is screw-connected with a fixing bolt 130 for fixing the wire outside the wire inlet hole 110. After the copper wire end of the wire is inserted into the inside of the wire inlet hole 110, the fixing bolt 130 can be rotated by using an external screwdriver to make the fixing bolt 130 screw down and fix the copper wire inside the leakage protector. The outside of the leakage protector body 100 is rotatably provided with a mechanical handle 140. After the leakage protector automatically trips, the mechanical handle 140 can be manually rotated to open the contactor. The working principle of the leakage protector automatic tripping protection circuit is the existing public technology, which is not described in detail here.

[0047] As shown in Figure 1 and Figure 2 , in the embodiment, the open end of the protective shell 500 is detachably fixed with a transparent plate 510. The transparent plate 510 can be made of acrylic plastic material, which facilitates the user to directly observe whether the elastic bag 300 is tensioned through the transparent plate 510. The outside of the leakage protector body 100 is fixed with a rectangular frame 120 for mounting and fixing the protective shell 500. The rectangular frame 120 and the protective shell 500 are detachably mounted and fixed.

[0048] In the embodiment, the protective shell 500 is mainly composed of two rectangular boxes which can be combined with each other. When the wires are installed or removed, the rectangular box with the transparent plate 510 can be disassembled, thereby facilitating the user to operate the wires.

[0049] As shown in the drawings, Figure 2 In the embodiment, the experiment button 150 and the closing button 160 are arranged on the leakage protector body 100. The experiment button 150 is generally pressed once a month to detect whether the automatic tripping function of the leakage protector is intact. After the leakage protector trips, the closing button 160 is pressed first, and then the mechanical handle 140 is moved to manually close.

[0050] As shown in the drawings, Figure 3 In the embodiment, the restraint mechanism 200 and the elastic bag 300 are arranged at the open position of the incoming wire hole 110 of the live wire and the zero wire, so that the live wire and the zero wire are simultaneously protected. Of course, the same structure can be arranged at the remaining wire connection positions of the leakage protector to achieve protection. If the leakage protector is exposed to the outdoor environment, the protective shell 500 can be installed. If the leakage protector is installed in a space with good protection measures such as a power distribution cabinet, the protective shell 500 can not be installed. Whether the protective shell 500 needs to be installed depends on the working environment of the leakage protector.

[0051] In the second embodiment, on the basis of the first embodiment, the position of the copper wire of the pulled-out and moved wire can be smoothly moved into the protective elastic bag 300.

[0052] As shown in the drawings, Figure 3 - Figure 5 In the embodiment, one end of the T-shaped block 400 is fixedly connected with the elastic bag 300, and the other end of the T-shaped block 400 is slidably connected with the incoming wire hole 110. The inner top and the inner bottom of the incoming wire hole 110 are provided with sliding grooves 111, the sliding grooves 111 are slidably connected with the T-shaped block 400, and the T-shaped block 400 is detachably and rotatably fixed with one end of the sliding groove 111 through a screw.

[0053] Specifically, the two T-shaped blocks 400 are respectively supported and fixed in the incoming wire hole 110 from the top and the bottom of the elastic bag 300, so that the position of the elastic bag 300 at the left end of the T-shaped block 400 is in a relaxed state, and the copper wire in the pulled state can be moved into the elastic bag 300. The position of the elastic bag 300 at the right end of the T-shaped block 400 can be kept in a tension state under the traction of the traction belt 310, so as to warn the user to check whether the wire is in the pulled state.

[0054] In the embodiment, during the installation of the T-shaped blocks 400, the two T-shaped blocks 400 are respectively slid and clamped to the inner part of the sliding grooves 111 along the corresponding sliding grooves 111, and then the screws are screwed to the inner wall of the wire inlet hole 110 from the end of the T-shaped blocks 400 away from the elastic bag 300, so as to realize the installation and fixation of the two T-shaped blocks 400 at the position of the wire inlet hole 110.

[0055] It is obvious for those skilled in the art that the present application is not limited to the details of the above-mentioned exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0056] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be properly combined to form other embodiments which can be understood by those skilled in the art.

Claims

1. A leakage protector for safe electricity use which is easy to install, characterized in that, The utility model relates to a leakage protector, including: Leakage protector body (100), the top of leakage protector body (100) is provided with a plurality of incoming line hole (110); Binding mechanism (200), two, respectively fixed at the top and bottom of incoming line hole (110), binding mechanism (200) includes support plate (210), one end of support plate (210) is rotatably provided with two connecting rods (220), rotatably provided with rubber wheel (230) between two connecting rods (220), one end of support plate (210) is rotatably provided with connecting shaft (211), torsion spring is sleeved between connecting shaft (211) and support plate (210), both ends of connecting shaft (211) are fixedly connected with corresponding position connecting rod (220) respectively; Elastic bag (300), one end is arranged in the incoming line hole (110), is used for insulating protection copper wire on wire, the open top and bottom of elastic bag (300) are fixedly provided with two traction belts (310), traction belt (310) is fixedly wrapped with rubber wheel (230); T-shaped block (400), two, can be detachably fixed in the incoming line hole, is used for limiting and fixing elastic bag (300), one end of T-shaped block (400) is fixedly connected with elastic bag (300), the other end of T-shaped block (400) is slidably connected with incoming line hole (110), the inner top and inner bottom of incoming line hole (110) are provided with sliding slot (111), sliding slot (111) is slidably connected with T-shaped block (400), T-shaped block (400) is detachably rotatably fixed with one end of sliding slot (111) by screw; Protective shell (500), fixed on the outside of incoming line hole (110), is used for protecting binding mechanism (200).

2. The easily installed, safe-to-apply, ground fault circuit interrupter of claim 1, wherein, One end of support plate (210) is fixedly provided with limiting block (212), one end of connecting rod (220) is rotatably attached to limiting block (212).

3. The easily installed, safe-to-apply, ground fault circuit interrupter of claim 1, wherein, The middle part of rubber wheel (230) is provided with annular groove, both ends of rubber wheel (230) are fixedly wrapped with multiple traction belts (310).

4. The easily installed, safe-to-apply, ground fault circuit interrupter of claim 1, wherein, Support plate (210) is fixedly connected with leakage protector body (100), and the middle part of support plate (210) is throughly provided with slot-shaped hole (213).

5. The easily installed, safe-to-apply, ground fault circuit interrupter of claim 1, wherein, One end of elastic bag (300) is throughly provided with round hole (320), and the round hole (320) can be elastically deformed, and the elastic bag (300) is made of insulating elastic material.

6. The easily installed, safe-to-apply, ground fault circuit interrupter of claim 1, wherein, The outer side of leakage protector body (100) is rotatably connected with fixing bolt for fixing wire corresponding to incoming line hole (110), and the outer side of leakage protector body (100) is rotatably provided with mechanical handle (140).

7. The easily installed, safe-to-apply, ground fault circuit interrupter of claim 1, wherein, The open end of protective shell (500) is detachably fixed with transparent plate (510), and the outer side of leakage protector body (100) is fixedly provided with rectangular frame (120) for mounting and fixing protective shell (500).

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