Metal combine duct fixture for wiring box

Abstract

An invention regarding a metal flexible conduit fixing device for a wiring box is disclosed. The disclosed metal flexible conduit fixing device for a wiring box provides a fixing device body that forms an insertion fixing groove to guide and fix a metal flexible conduit into the wiring box, wherein the metal flexible conduit is formed as a hollow body with both ends open and having a diameter smaller than the inner diameter of a connection socket connected to the electrical or communication line inlet of the wiring box, positioned through the connection socket to the inside of the inlet, so as not to be caught by the elastic pieces of the connection socket and detached to the outside.

Description

Technology Field

[0001] The present invention relates to a metal joint duct fixing device for a wiring box, and more specifically, to a metal joint duct fixing device for a wiring box that allows anyone to easily fix a small-diameter metal joint duct to a wiring box embedded in the wall of a building without changing the shape or structure of the wiring box. Background Technology

[0002] Generally, in wiring boxes installed embedded in the walls of buildings such as detached or multi-unit houses, flexible conduits made of synthetic resin (combine duct, commonly referred to as CD in the field) are mainly used for wiring electrical or communication lines.

[0003] However, flexible conduits made of synthetic resin are prohibited from use because they are very vulnerable to fire damage when used to protect electrical or communication lines, and instead, metal flexible conduits (combine ducts) are required to be used.

[0004] However, unlike conventional plastic flexible conduits, metal flexible conduits are not made to fit the specifications for wiring boxes and have different diameters, so they cannot be used and fixed as they are in wiring boxes. Therefore, there is a difficulty in having to separately order and use metal flexible conduits that fit the wiring box.

[0005] Therefore, there is an urgent need for the development of a fixing device that can be easily fixed using existing metal flexible conduits without changing the shape or structure of the wiring box.

[0006] Meanwhile, the following patent documents exist as 'fixing fixtures for corrugated pipes for cable wiring.' Registration No. 10-0972372 is 'fixing fixture for corrugated pipes for streetlights for wiring,' Publication No. 10-2023-001613610 is 'fixing member for ring-shaped multiple corrugated pipes,' Publication No. 20-1988-0004154 is 'connecting fixture for conduit for wiring enclosures,' and Registration No. 20-0412753 is 'side corrugated pipe connector for formwork fixing.' Prior art literature

[0007] KR Registration No. 10-0972372 KR Publication No. 10-2023-001613610 KR Announcement No. 20-1988-0004154 KR Registration No. 20-0412753 The problem to be solved

[0008] The present invention was developed as a result of diligent research to solve the problems of the prior art as described above, and aims to provide a metal flexible conduit fixing device for a wiring box that offers convenience and cost-effectiveness by allowing a small-diameter metal flexible conduit sold on the market to be easily fixed to a wiring box without changing the shape or structure of the wiring box. means of solving the problem

[0009] The above objective is achieved by a metal flexible conduit fixing device for a wiring box provided according to the present invention.

[0010] A metal flexible conduit fixing device for a wiring box provided according to one aspect of the present invention comprises a fixing device body having connection sockets each fastened to an electrical or communication line inlet of the wiring box, and a hollow body with both ends open and a diameter smaller than the inner diameter of the connection socket, which is positioned inside the inlet through the connection socket so as not to be caught by the elastic pieces of the connection socket and guide the electrical or communication line to be wired into the wiring box, and an insertion fixing groove portion that allows the metal flexible conduit to be inserted and fixedly supported. The fixing device body comprises a main body portion having a conical shape in which the diameter gradually narrows toward the side positioned inside the inlet from the connection socket, and elastic catch pieces formed by cutting a portion in the longitudinal direction from both sides of the main body portion so that an elastic force acts inwardly on the main body portion to be elastically supported in the spiral groove portion of the metal flexible conduit positioned at the insertion fixing groove portion, and at a position adjacent to the elastic catch pieces It includes an annular jaw portion formed in an annular shape along the outer circumference of the body portion to elastically catch the elastic pieces, a catch flange portion formed on the periphery of the wide opening portion of the body portion to be supported by the connection socket so as to prevent the body portion from being pushed into the inlet side, and a stop jaw portion formed inwardly along the periphery of the narrow opening portion opposite the catch flange portion to indicate that the insertion of the metal flexible conduit inserted through the insertion fixing portion is complete.

[0011] delete

[0012] It is characterized by configuring the lengths of the elastic catch pieces to be different from each other so that they are positioned along the spiral groove of the metal flexible conduit. Effects of the invention

[0013] According to the following embodiment of the present invention, a small-diameter metal flexible conduit can be easily connected to a wiring box by anyone without changing the shape or structure of the wiring box, thereby providing an effect of improving workability that enables rapid connection of the metal flexible conduit to the wiring box. Brief explanation of the drawing

[0014] FIG. 1 is a perspective view showing the external appearance of a metal flexible conduit fixing device for a wiring box according to the present invention, and FIG. 2 is an exploded view showing an example of using a metal flexible conduit fixing device for a wiring box according to the present invention in a wiring box, viewed from the bottom side of the wiring box. FIG. 3 is a cross-sectional view along the direction of line II of FIG. 2, and Figure 4 is an enlarged view of part A of Figure 3. Specific details for implementing the invention

[0015] The embodiments of the present invention are exemplified for the purpose of explaining the technical concept of the present invention.

[0016] The scope of rights according to the present invention is not limited to the embodiments presented below or the specific description thereof.

[0017] All technical and scientific terms used in this invention, unless otherwise defined, have the meaning generally understood by those skilled in the art to which this invention pertains. All terms used in this invention are selected for the purpose of further clarifying the following description of the invention and are not selected to limit the scope of rights according to this invention.

[0018] Expressions such as 'comprising,' 'having,' and 'having' used in the present invention should be understood as open-ended terms implying the possibility of including other embodiments, unless otherwise stated in the phrase or sentence containing such expressions.

[0019] Unless otherwise stated, singular expressions described in the present invention may include the meaning of the plural form, and this applies likewise to singular expressions described in the claims.

[0020] In addition, in the present invention, where it is mentioned that a certain component is 'connected' to another component, it should be understood that the certain component can be directly connected to or joined to the other component, or can be connected or joined through a new other component.

[0021] Hereinafter, an embodiment of a metal flexible conduit fixing device for a wiring box according to the present invention will be described with reference to the attached drawings.

[0022] FIG. 1 is a perspective view showing the external appearance of a metal flexible conduit fixing device for a wiring box according to the present invention, and FIG. 2 is an exploded view showing an example of using the metal flexible conduit fixing device for a wiring box according to the present invention in a wiring box, viewed from the bottom side of the wiring box.

[0023] As shown in the drawing, the metal flexible conduit fixing device (100) for a wiring box according to the present invention comprises a fixing device body (110) that provides an insertion fixing groove (111) for inserting and fixing a metal flexible conduit (30) that guides electrical or communication lines to be wired into the wiring box (10). The metal flexible conduit fixing device (100) is formed as a hollow circular body with both ends open and has a diameter smaller than the inner diameter of the connecting socket (20), and is inserted through the connecting socket (20) to a predetermined position inside the wiring box inlet (12) so as not to be detached to the outside by being caught by the elastic pieces (22) provided in the connecting socket (20). The metal flexible conduit fixing device (100) is molded from plastic so that it can be supplied in large quantities at a low price.

[0024] The detailed configuration of the above-mentioned fixing body (110) is explained with reference to FIGS. 3 and FIGS. 4. FIGS. 3 is a cross-sectional view along line II of FIGS. 2, and FIGS. 4 is an enlarged view of part A of FIGS. 3.

[0025] As shown in the drawing, the fixing body (110) comprises a body portion (112) of a predetermined length that forms a conical shape with a gradually decreasing diameter toward the direction from the connection socket (20) toward the inside of the wiring box inlet (12), and elastic catch pieces (113a, 113b) formed by cutting a portion in the longitudinal direction from both sides of the body portion (112) to allow elastic force to act inwardly on the body portion (112) so as to be elastically caught and supported by the spiral groove portion (32) of the metal flexible conduit (30) that is inserted into the insertion fixing groove portion (111). At an adjacent position to the elastic catch pieces (113a, 113b), the elastic pieces (22) are formed protruding in an annular shape along the outer circumference of the body portion (112) so as to be elastically caught, thereby preventing the body portion (112) from being ejected from the outside of the wiring box (10). It includes an annular jaw portion (114) that exerts fixing force, a locking flange portion (115) formed with a predetermined width along the periphery of the wide opening portion of the body portion (112) and supported in a locked state by being seated on the connecting socket (20), thereby preventing the body portion (112) from entering the interior of the inlet (12), and a stopping jaw portion (116) formed to form a jaw along the periphery of the narrow opening portion opposite to the locking flange portion (115), which indicates that the metal flexible conduit (30) inserted through the insertion fixing groove portion (111) has been inserted to the end of the body portion (112), thereby preventing unnecessary waste of force during insertion.

[0026] The above-mentioned body portion (112) is formed to form a conical shape that gradually narrows toward the right side, that is, the end where the stop portion (116) is formed, as seen in FIG. 1. This is so that the metal flexible conduit (30) inserted into the insertion fixing groove (111) of the body portion (112) is positioned in a state where it is in close contact with the inner wall of the body portion (112), thereby allowing the elastic catch pieces (113a, 113b), which are formed to apply elastic force from the body portion (112) toward the insertion fixing portion (111), to apply elastic force more strongly to the metal flexible conduit (30) and maintain a solid fixing force.

[0027] In addition, the elastic catch pieces (113a, 113b) described above are configured to have different lengths. The reason for this is to position them precisely in the spiral groove (32) of the metal flexible conduit (30) so as to firmly support the metal flexible conduit (30).

[0028] An example of the operation of a metal flexible conduit fixing device (100) for a wiring box with the configuration as described above will be explained again with reference to FIGS. 3 and 4.

[0029] As shown in the drawing, a metal flexible conduit fixing device (100) for a wiring box provided according to one aspect of the present invention is positioned so that it is directly coupled into the interior of a connection socket (20) coupled to the inlet (12) of a wiring box (10), and the body portion (112) is supported by the elastic pieces (22) of the connection socket (20) so that the annular jaw portion (114) of the body portion (112) is supported by the elastic pieces (22) of the connection socket (20), thereby preventing it from detaching from the connection socket (20) of the wiring box (10) even when a physical external force is applied, and the locking flange portion (115) of the body portion (112) is supported in a state of being caught on the connection socket (20), thereby maintaining a fixed state so that the body portion (112) itself cannot enter the interior of the connection socket (20), thereby allowing existing commercially available metal to be inserted into the insertion fixing groove portion (111) of the body portion (112) without changing the shape or structure of the wiring box (10). This allows the flexible conduit (30) to be inserted as is and fixed stably.

[0030] The metal flexible conduit (30) inserted into the interior of the body portion (112) allows the worker to immediately feel that the end of the metal flexible conduit (30) is caught by touching the stop portion (116) of the body portion (112), thereby preventing the worker from wasting unnecessary force when inserting the flexible conduit (30). Additionally, elastic catch pieces (113a, 113b) are positioned in the spiral groove portion (32) of the metal flexible conduit (30) that has been inserted into the interior of the body portion (112), thereby creating a state of elastic catch, so that the metal flexible conduit (30) can maintain a solid fixed state in which it cannot be easily separated from the outside of the body portion (112).

[0031] As such, the metal flexible conduit fixing device (100) for a wiring box according to the present invention provides convenience and economic benefits by allowing a metal flexible conduit (30) with a small diameter to be securely connected to the inlet (12) of the wiring box (10) without changing the shape or structure of the wiring box (10). Industrial applicability

[0032] The present invention provides the convenience of being able to fix existing metal flexible conduits using them as they are without changing the shape or structure of the wiring box. Explanation of the symbols

[0033] 10: Wiring box 12: Entrance 20: Connection socket 30: Flexible metal conduit 32: Spiral groove 100: Metal flexible conduit fastener 110 : Fixture body 111: Insertion fixing groove 112 : Torso 113a, 113b: Elastic catch 114 : Circular jaw 115 : Caught flange 116 : Stop jaw

Claims

Claim 1 A fixing body (Body) is provided for fixing and supporting an insertion fixing groove portion for guiding an electrical or communication line into the wiring box, wherein the body is formed as a hollow tube with both ends open and a diameter smaller than the inner diameter of the connecting socket, positioned through the connecting socket to the interior of the inlet, and prevented from being caught by the elastic pieces of the connecting socket and detached to the outside; wherein the fixing body comprises a main body portion forming a conical shape with a diameter that gradually narrows toward the side located inside the wiring box inlet from the connecting socket, an elastic catch piece formed by cutting a portion in the longitudinal direction from both sides of the main body portion to allow elastic force to act inwardly on the main body portion, positioned in the spiral groove portion of the metal flexible conduit located at the insertion fixing groove portion, and supported in a state of being elastically caught in the spiral groove portion, and an annular jaw portion formed along the outer circumference of the main body portion at a position adjacent to the elastic catch piece, which causes the elastic pieces to be elastically caught. A metal flexible conduit fixing device for a wiring box, characterized by including a locking flange portion formed on the periphery of the wide opening of the body portion and supported by the connection socket to prevent the body portion from being pushed into the wiring box inlet side, and a stopper portion formed as a ledge on the inner side of the narrow opening opposite the locking flange portion to indicate that the insertion of the metal flexible conduit inserted through the insertion fixing groove portion is completed. Claim 2 delete Claim 3 A metal flexible conduit fixing device for a wiring box according to claim 1, characterized in that the lengths of the elastic catch pieces are configured to be different from each other and positioned along the spiral groove of the metal flexible conduit.

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