Connecting Stucture For Metallic Flexible Tube Of Electric Distributing Box

Abstract

The present invention relates to a one-touch type connector used when connecting a flexible pipe to a wiring box fixedly installed on a wall of a building. The connector is cylindrical in shape and has a first socket connected to a wiring box on one side along the longitudinal direction and a second socket connected to a flexible pipe made of metal on the opposite side; the first socket has ring-shaped insertion grooves provided at regular intervals along the longitudinal direction; the second socket has slits provided along the longitudinal direction to allow it to contract elastically, and protrusions corresponding to the pitch of the flexible pipe are formed protruding from the outer surface.

Description

Technology Field

[0001] The present invention relates to a flexible conduit connection structure for a wiring box, and more specifically, to a one-touch connection structure used when connecting a flexible conduit to a wiring box fixedly installed on a wall of a building. Background Technology

[0002] Wiring boxes are widely used to supply electricity to residential spaces in buildings. While wiring boxes are typically installed embedded within building walls, they are sometimes installed to be exposed to the outside in temporary structures. Wires may be branched and electrical outlets installed within the wiring box. Conduit is essential for connecting to the wiring box. Wires extend along the conduit to reach the wiring box. The conduit serves as a guide for wire installation and also protects the wires. Conventional conduits were generally made of synthetic resin. However, this has the disadvantage of being vulnerable to fire. Therefore, in recent years, the use of fire-resistant metal conduits has been recommended or mandated.

[0003] Metal conduit is flexible and made in a spiral shape, and is a flexible pipe widely used to protect hoses.

[0004] In order to conveniently connect this metal flexible tube to a conventional wiring box, a specific new means, namely a connector or adapter, is required. Prior art literature

[0005] Republic of Korea Utility Model Registration No. 20-0443934 Republic of Korea Patent Registration No. 10-2321027 The problem to be solved

[0006] Regarding the above problem, the objective of the present invention is to provide a means for conveniently connecting a flexible pipe made of metal material to a wiring box, which is installed at the conduit connection portion of a wiring box fixedly installed on a building wall.

[0007] More specifically, the purpose is to provide a connector that can be joined with a one-touch method, can be disassembled when necessary, and prevents snagging when inserting wires. means of solving the problem

[0008] The above purpose comprises: a wiring box (100) provided with a conduit connector (101) having screw threads; a coupling (103) that is screw-coupled to the conduit connector (101) of the wiring box and has a wedge-shaped fastening pin (105) installed inside along the circumferential direction; a first socket (3) which is cylindrical in shape and connected to the coupling (103) of the wiring box on one side along the longitudinal direction; and a second socket (5) which is integral with the first socket (3) and connected to a flexible pipe (200) made of a metal material; wherein the first socket (3) is provided with ring-shaped insertion grooves (7) at regular intervals along the longitudinal direction; The second socket (5) is provided with a slit (9) along its length so as to be elastically retractable, and a projection (11) corresponding to the pitch of the flexible tube (200) is formed protrudingly on the outer surface of the second socket (5), so that the second socket (5) can be inserted and fixed inside the flexible tube (200) and the first socket (3) can be inserted and fixed inside the coupling (103); the fastening pin (105) is provided with a catch (107) that moves elastically and has a triangular cross-section at its end, so that the catch (107) is fastened to the insertion groove (7) of the first socket, and the catch (107) is coupled to the insertion groove (7) in a wedge shape so that it does not come out in the opposite direction of insertion due to the wedge action, characterized in that the connection structure between a wiring box and a metal flexible tube connector It is achieved by.

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[0012] delete Effects of the invention

[0013] According to the present invention, a one-touch connection structure is provided for conveniently connecting a flexible pipe made of metal material to a wiring box, which is installed at the conduit connection portion of a wiring box fixedly installed on a building wall.

[0014] More specifically, a connection structure is provided between a wiring box and a metal flexible tube that is joined by screws, allowing for disassembly when necessary and preventing jamming when inserting wires. Brief explanation of the drawing

[0015] FIG. 1 is a perspective view of a metal flexible tube connector for a wiring box according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of a metal flexible tube connector for a wiring box according to an embodiment of the present invention. FIG. 3 is a perspective view illustrating the connection structure of a metal flexible tube for a wiring box according to an embodiment of the present invention. FIG. 4 is a cross-sectional view showing the connection structure of a metal flexible tube connector for a wiring box according to an embodiment of the present invention. Specific details for implementing the invention

[0016] Hereinafter, the specific details of the present invention will be described in detail with simultaneous reference to the attached FIGS. 1 to 4.

[0017] The metal flexible tube connector used in the present invention (1. Hereinafter abbreviated as 'connector') is basically in the shape of a cylinder.

[0018] Along the longitudinal direction of the connector (1), a first socket (3) connected to a wiring box (100) is provided on one side, and a second socket (5) connected to a flexible tube (200) made of metal material is provided on the opposite side. The lengths of the first socket (3) and the second socket (5) are equal.

[0019] The first socket (3) has ring-shaped insertion grooves (7) provided at regular intervals along the longitudinal direction on its outer surface. The outer surface of the first socket (3) is corrugated in a wavy shape. The width and depth of the insertion grooves (7) are designed according to the shape of the coupling (103) that is screw-coupled to the conduit connector (101) of the wiring box.

[0020] The coupling (103) is a component that is screw-coupled to the conduit connector (101) of the wiring box. Inside the coupling (103), a wedge-shaped fastening pin (105) is installed along the circumferential direction. The fastening pin (105) moves elastically, and a catch (107) with a triangular cross-section is provided at its end. This catch (107) is coupled to the insertion groove (7) of the first socket. The catch (107) is coupled to the insertion groove (7) in a wedge shape, and is designed not to come off in the opposite direction of insertion due to the wedge action.

[0021] The insertion groove (7) is provided along the entire section along the circumferential direction so that it can be coupled with the coupling (103) in any direction.

[0022] The second socket (5) is formed integrally with the first socket (3).

[0023] The second socket (5) is provided with a slit (9) along its length so that it can elastically contract. Two to four slits (9) are provided along the entire length of the second socket (5).

[0024] On the outer surface of the second socket (5), protrusions (11) are formed at intervals corresponding to the pitch of the flexible tube (200). According to an embodiment of the present invention, these protrusions (11) are screw-type and are configured to be screw-coupled with a spiral groove (201) provided on the inner surface of the flexible tube (200).

[0025] According to this configuration, the second socket (5) can be inserted and fixed inside the flexible tube (200), and the first socket (3) can be inserted and fixed inside the coupling.

[0026] The second socket (5) is inserted into the interior of the flexible tube (200) by press-fitting. When press-fitted, the second socket (5) elastically contracts, and the projection (11) is attached to the spiral groove inside the flexible tube (200). Therefore, it is not separated by normal force, and can be separated by rotating it in the same way as loosening a screw.

[0027] The end of the second socket (5) may be inclined so that the wire does not get caught when inserting the wire.

[0028] The first socket (3) and the coupling are also not separated in the reverse direction (i.e., the direction to be separated). Only by pushing further in the coupling direction can the first socket (3) be separated from the coupling (103).

[0029] The configurations described and illustrated above are merely preferred embodiments based on the technical concept of the present invention. Those skilled in the art may make various modifications based on ordinary technical common sense, but should be aware that such modifications may be included within the scope of protection of the present invention. Various combinations of the embodiments disclosed above are possible, and all possible combinations fall within the scope of rights of the present invention. Explanation of the symbols

[0030] 1 : Metal flexible tube connector for wiring boxes 3 : 1st socket 5 : 2nd socket 7 : Insertion groove 9 : Slit 11 : protrusion 100 : Wiring box 101 : Conduit connector 103 : Coupling 105 : Connecting pin 107 : Hinder 200 : Flexible tube 201 : Spiral groove

Claims

Claim 1 A wiring box (100) provided with a conduit connector (101) having screw threads; a coupling (103) that screw-couples to the conduit connector (101) of the wiring box and has a wedge-shaped fastening pin (105) installed inside along the circumferential direction; a first socket (3) that is cylindrical and is connected to the coupling (103) of the wiring box on one side along the longitudinal direction; and a second socket (5) that is integral with the first socket (3) and is connected to a flexible pipe (200) made of a metal material; wherein the first socket (3) is provided with ring-shaped insertion grooves (7) at regular intervals along the longitudinal direction; The second socket (5) is provided with a slit (9) along its length so as to be elastically retractable, and the end of the second socket (5) is formed as an inclined surface so as not to catch the wire when inserting the wire, and a projection (11) corresponding to the pitch of the flexible tube (200) is formed protrudingly on the outer surface of the second socket (5), so that the second socket (5) can be inserted and fixed inside the flexible tube (200), and the first socket (3) can be inserted and fixed inside the coupling (103); the fastening pin (105) is provided with a catch (107) that moves elastically and has a triangular cross-section at its end, so that the catch (107) is fastened to the insertion groove (7) of the first socket, and the catch (107) is coupled to the insertion groove (7) in a wedge shape, so that in the opposite direction of the insertion direction A connection structure between a wiring box and a metal flexible tube connector, characterized in that it is prevented from coming loose by a wedge action, and the outer diameter of the second socket is formed smaller than the outer diameter of the first socket, so that the first socket can be separated from the coupling by pushing the first socket further in the insertion direction. Claim 2 delete Claim 3 A connection structure between a wiring box and a metal flexible tube connector, characterized in that, in claim 1, the projection (11) is formed spirally to enable screw coupling to the flexible tube (200).

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