JP2018102055A - Piping wire inserting auxiliary tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a piping wire inserting auxiliary tool capable of easily inserting an electric cable into a wire insertion pipe piercing to a ceiling slab of an architectural structure without using a portable type work bench or a temporary scaffolding which have the risk of falling, and reducing cost, time, and labor for a work.SOLUTION: Th present invention relates to a piping wire inserting auxiliary tool 1 for inserting an electric cable K into a wire insertion pipe P pierced to a ceiling slab S of an architectural structure. The piping wire inserting auxiliary tool 1 is constructed by: a long-sized cable insertion pipe 2; a flexible pipe 3 provided at one end side of a cable insertion pipe 2 through a joint part 5; and a socket part 4 provided on one end side of the flexible pipe 3.SELECTED DRAWING: Figure 1

Description

  TECHNICAL FIELD The present invention relates to a piping line auxiliary tool used for passing an electric cable through a piping line driven into a ceiling slab of a building.

  In general, as shown in FIG. 14, when the electric cable K is routed between the rooms partitioned by the concrete wall W of the construction, the ceiling slab S is flexible in advance, for example, synthetic A piping P for resin connection such as resin is buried.

  Next, as shown in FIG. 13, for example, a bowl-shaped portable work table 100 is installed just below the portion where the end of the passage pipe P projects obliquely from the ceiling slab S. The worker Q goes up to the portable work table 100, and first, in order to ensure the safety of the worker Q, the fall prevention device 101 attached to the body of the worker Q is attached to the ceiling.

  Then, in order to pass the electric cable K through the wiring pipe P, as shown in FIG. 14, for example, the tip of the pulling wire L made of steel or the like is inserted into the end of the wiring pipe P and passed through. The wires are sequentially introduced into the line pipe P by hand, and the tip of the pulling wire L is pulled out from the opposite end of the line pipe P.

  Next, the electric cable K is connected to the leading end of the drawn pulling wire L, and again, the pulling wire L is pulled back to the insertion end portion side of the pulling wire P, so An electric cable K is routed.

  However, in the conventional work, there is a risk that the worker Q may fall from the portable workbench 100 during the line work on the portable workbench 100.

  In addition, in the case of a high ceiling slab S such as a general building, the temporary scaffolding is assembled and the work is performed, but the assembly is expensive.

  Therefore, as a technique for performing piping wiring without using the portable workbench 100 or the like, for example, as shown in Patent Document 1, a technique of burying a wall-end end cover in a ceiling slab S and passing a cable is provided. Has been.

  That is, the wall crossing end cover has a hanging part on the inner surface, while the wire passing tool is composed of an expansion tube part, a hook part, and a guide part. Engage with the hanging part, insert the steel wire from the other end, pass through the guide part, put it out to the end cover across the wall on the opposite side, lower it to the floor, pull out the cable from the cable drum, and fix it to the steel wire Thus, a structure in which the steel wire on the opposite side is pulled and the cable is routed is disclosed.

  Further, as shown in Patent Document 2, the pipe end and the pole are integrally connected by fitting the end of the cut pipe into the pipe end fitting inner diameter in the socket provided at the tip of the pole. A structure is disclosed in which an electric wire is inserted from the lower end of the wire to pass through the pipe.

JP 2002-152938 A Japanese Patent No. 3344717

  However, in the case of the above-described Patent Document 1, the embedding of a wall-end end cover in the ceiling slab S itself already causes a large cost.

  In addition, the wiring tool of Patent Document 1 includes an expansion tube portion, a hook portion, and a guide portion. Of these, in order to engage the hook portion with the hanging portion of the end cover across the wall, the expansion tube portion is long. In some cases, it can be a very tedious task.

  In addition, the hook portion is composed of a suspension fitting, a suspension support member having a guide hole in the center, and a support member support, and the guide portion is engaged with the screw of the suspension fitting support member. Depending on the bent shape, it may be difficult to connect the guide pipe to the synthetic resin pipe attached to the wall-end cover.

  In the case of the above-mentioned Patent Document 2, since the socket part is provided integrally with the pole tip in a straight line, the work of fitting the end of the pipe into the socket part is troublesome. The time and effort spent on the implementation of this will be very large.

  Therefore, the present invention was created in view of the existing circumstances as described above, and was driven into a ceiling slab of a building without using a portable worktable or temporary scaffolding with a high risk of falling. An object of the present invention is to provide an auxiliary tool for pipe wiring that can easily pass an electric cable through the pipe for wiring, and that can reduce the cost, time, and labor required for work.

  The invention of claim 1 according to the present invention is a piping line auxiliary tool for connecting an electric cable to a line pipe driven into a ceiling slab of a building, the pipe line auxiliary. The tool is a long cable insertion pipe, a flexible pipe provided on one end side of the cable insertion pipe via a joint portion, and a wiring line provided on one end side of the flexible pipe and protruding from the ceiling slab A wrapper that is configured by a socket that can be connected to an end of a pipe, and that the socket is gradually expanded toward the opening edge of the tip on the opening side of the tip of the barrel formed in a cylindrical shape The peripheral wall of the trunk portion is provided with a plurality of hook portions for locking the inserted through-line piping on the inner side of the trunk portion, In the peripheral wall of the trunk portion, a substantially inverted U toward the introduction opening side. By providing the Jo cut portion is formed in a cantilever arm shape, it has solved the problems described above.

  According to the auxiliary instrument for pipe line connection according to claim 1, when the end part of the line pipe line protrudes obliquely from the ceiling slab, the socket part faces the end part of the line line pipe. After the flexible tube is bent, hold the cable insertion tube in your hand and push the lead-in opening through the line piping.

  By this operation, the end portion of the wiring line can be inserted into the socket part, and thus the electric cable can be easily passed through the wiring line.

  In addition, since the end of the wire for piping inserted in the socket portion is connected to the socket portion itself, the electric cable K can be reliably passed through the wire for piping through the socket portion.

  Furthermore, the end portion of the piping for wiring can be reliably introduced into the socket portion by the introduction opening formed in the trumpet shape.

  In addition, after the introduction, since the end of the passage line is firmly locked in the body A by the hook portion, the occurrence of a situation in which the socket part is unexpectedly detached from the end of the passage line. Therefore, it is possible to ensure the safety of the subsequent line work.

  Moreover, since the hook part is formed in a cantilevered arm shape, the hook part is easily bent in the expanding direction by pushing the end of the passage pipe from the introduction opening part side to the hook part, As a result, the end of the line-connecting pipe can be reliably locked in the body portion 4A of the socket portion 4.

  Furthermore, the invention of claim 2 according to the present invention is characterized in that the pipe for passage is formed by a corrugated pipe having flexibility, and the hook portion is a wave groove at a lowermost end of the corrugated pipe, or an outermost pipe. Similarly, the above-described problem has been solved by providing a triangular nail-like locking projection at the tip so as to engage with a wave groove positioned above the wave groove at the lower end.

  According to the pipe line auxiliary tool according to claim 2, since the wave groove of the corrugated pipe is used as an object to engage the locking projection of the hook portion, there is something in the line pipe. It is not necessary to add processing, and its end can be securely locked in the body of the socket.

  In addition, the invention of claim 3 according to the present invention is such that the locking projection has a gentle first inclined surface on the surface side that receives the end portion of the insertion pipe to be inserted, and is also drawn out. Similarly, the above-described problem has been solved by the fact that the surface side that receives the end of the line piping is a steep second inclined surface.

  According to the pipe line auxiliary tool according to claim 3, by inserting the end of the line pipe toward the first inclined surface of the locking protrusion, the line is inserted into the body part of the socket part. For example, the wave groove located at the lowermost end of the pipe can be smoothly locked.

  In addition, in order to remove the socket portion from the end of the line for piping, the end of the line for piping needs to get over the steep second inclined surface. Therefore, the socket portion does not easily come off with a slight pulling force, and the socket portion can be prevented from being unintentionally detached during the wiring operation.

  Further, according to a fourth aspect of the present invention, the cable insertion tube is provided with a tightening joint portion at a distal end and a trumpet-shaped guide portion that gradually expands outward at a proximal end portion. A base side pipe, and an extension side pipe inserted into the base side pipe from the fastening joint part, and the extension side pipe is drawn out from the base side pipe to an arbitrary length, and the fastening joint part Since the cable insertion tube itself can be expanded and contracted by tightening and fixing with the above, the above-described problem has been solved.

  According to the auxiliary tool 1 for piping connection according to the fourth aspect, the cable insertion tube itself is extendable and retractable so as to have a length corresponding to the height of the ceiling slab without depending on the height of the ceiling slab. Therefore, it can be used at various work sites, and the efficiency of the line work can be improved.

  In addition, the trumpet-shaped guide portion can smoothly pass through the base end portion of the base side pipe, thereby improving the efficiency of the wiring operation.

  Further, the invention of claim 5 according to the present invention solves the above-described problem by allowing the plurality of insertion tubes to be connected to each other through the plurality of tightening joint portions. .

  According to the auxiliary tool for piping connection according to the fifth aspect, even when the position of the ceiling slab is high, the cable insertion pipe can be easily lengthened and used, and the efficiency of the wiring operation can be improved.

  According to the piping line auxiliary tool according to the present invention, an electric cable is connected to a piping line driven into a ceiling slab of a building without using a portable work table or a temporary scaffold with high risk of falling. It can be connected easily, and the cost, time and labor required for the work can be greatly reduced.

  In addition, when the end of the line for piping protrudes in an oblique direction from the ceiling slab, the flexible tube is bent so that the socket part faces the end of the line for piping, and then the cable insertion tube Hold in the hand and push the lead-in opening through the piping for wiring. With this operation, the end of the line piping can be inserted into the socket part, whereby the electric cable can be easily passed through the line piping.

  Furthermore, by securely locking the socket part to the end of the piping for wiring, and preventing the socket part from being inadvertently removed during the wiring work, safety of the wiring work is ensured, Streamline work can be made more efficient.

It is a perspective view which shows the structure of the auxiliary tool for piping connection. The structure of the auxiliary tool for piping connection is shown, (a) is a side view, (b) is a top view. It is a side view which shows the use condition of the auxiliary tool for piping connection. It shows the usage state of the auxiliary tool for piping, (a) is a side view showing a state immediately before mounting the socket part on the protruding end of the piping for wiring, and (b) is the piping for wiring. It is a side view which shows the state which attached the socket part to the edge part which protrudes. It is a disassembled perspective view which shows the structure of the auxiliary tool for piping connection. It is a perspective view which shows the structure of the cable penetration pipe, a joint part, a flexible pipe, and a socket part in the front-end | tip part of the auxiliary tool for piping connection. It is a disassembled perspective view which shows the structure of a cable penetration pipe, a joint part, a flexible pipe, and a socket part in the front-end | tip part of the auxiliary tool for piping connection. It is sectional drawing which shows the structure of the cable penetration pipe, a joint part, a flexible pipe, and a socket part in the front-end | tip part of the auxiliary tool for piping connection. It is sectional drawing which shows the state which inserts the edge part of piping for wiring into a socket part. It is sectional drawing which shows the connection state of a cable penetration pipe. It is sectional drawing which shows the state which inserts the tow wire in a cable penetration pipe | tube. It is a perspective view which shows the state which inserts the tow wire in a cable penetration tube. It is a perspective view which shows the conventional wiring work state of the tow wire. It is a side view which shows the outline of the wiring work state of the electric cable in the past.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

<Embodiment>
The piping line auxiliary tool 1 according to the present invention is flexible, for example, made of synthetic resin or the like, which is driven into a ceiling slab S between rooms partitioned by a concrete wall W of a construction. It is used for passing the electric cable K through the pulling wire L for drawing the electric cable K into the pipe P.

  As shown in FIG. 1 and FIGS. 2 (a) to 5, the piping line auxiliary tool 1 is connected to one end of the long tubular cable insertion tube 2 and the cable insertion tube 2 via a joint portion 5. For example, the flexible pipe 3 formed by the corrugated pipe P1 having flexibility, and the wiring pipe P provided on one end side of the flexible pipe 3 and protruding from the ceiling slab S in an oblique direction, for example. And a socket portion 4 that can be connected to the end portion.

  In addition, the raw material of the piping P for driving through that is driven into the ceiling slab S is formed by the corrugated pipe P1 having the same flexibility as the flexible pipe 3.

  Further, as shown in FIGS. 6 to 8, the joint portion 5 has a central portion on the inner peripheral surface in order to make it easy to operate the flexible tube 3 and to use the wave shape of the corrugated tube P1. A cylindrical main body 20 having a ring-shaped stopper 20A for locking the end of the cable insertion tube 2 at the end and having male screw portions on the outer periphery of both ends, and an outer fitting set to the end of the main body 20 And a cylindrical chuck ring 21 which is locked by both vertically long stopper protrusions 21B and 20B.

  On the upper opening side of the chuck ring 21, a large number of L-shaped inward claw pieces 21A having flexibility in the inner and outer circumferential directions are provided at predetermined intervals in the circumferential direction. Then, by inserting the flexible tube 3 into the upper opening side of the joint portion 5, the inward claw piece 21A is engaged with an appropriate wave groove P2 located above the lowermost end portion of the flexible tube 3 (corrugated tube P1). Match.

  As shown in FIGS. 2B and 6 to 9, the socket portion 4 is gradually expanded toward the opening edge of the tip end of the barrel portion 4A formed in a cylindrical shape toward the opening edge of the tip end. It has an introduction opening 6 formed in a trumpet shape that opens, and the opening on the base end side has inner and outer peripheries for engaging, for example, a wave groove P2 located at the uppermost end of the corrugated pipe P1. A cylindrical chuck ring 31 having a large number of inward claw pieces 31A having flexibility in the direction at a predetermined interval in the circumferential direction and the inward claw pieces 31A in the inner circumferential direction by being screwed into the outer periphery of the body portion 4A. And a tightening ring 32 for tightening (see FIG. 8).

  Further, as shown in FIGS. 6 to 9, a substantially inverted U-shaped slit-shaped cut portion 7A is provided on the peripheral wall of the body portion 4A toward the introduction opening portion 6 side to form a cantilevered arm shape. A plurality of hook portions 7 having flexibility in the inner and outer peripheral directions are provided.

  The hook portion 7 is inserted into the trunk portion 4A through the introduction opening 6 by the operation of pushing the introduction opening 6 through the introduction piping 6 and pushes it into the trunk 4A. ), For example, is engaged with the wave groove P2 located at the lowermost end.

  The hook portion 7 is not limited to the hook portion 7 that is engaged with the wave groove P2 located at the lowermost end portion of the line P (corrugated pipe P1). It may be engaged with any one of the wave grooves P located at the position.

  In addition, although the four hook portions 7 are provided on the peripheral wall of the trunk portion 4A, the present invention is not limited to this. For example, two or three hook portions 7 may be provided, or five pieces. The hook portion 7 described above may be provided.

  At the tip of the hook portion 7, for example, a wave groove P <b> 2 located at the lowermost end portion of the passage pipe P (corrugated pipe P <b> 1) formed by the corrugated pipe P <b> 1 having flexibility is engaged. A triangular claw-shaped locking projection 8 comprising a first inclined surface 8A and a steep second inclined surface 8B is provided so as to face the inner circumferential direction.

  The gentle first inclined surface 8A of the locking projection 8 is connected to the introduction opening 6 by passing through the introduction opening 6 and pushed into the trunk 4A. Receiving the end of P1), the locking projection 8 is pushed in the outer circumferential direction and engaged with the wave groove P2 by its own elastic recovery.

  The steep second inclined surface 8B of the locking projection 8 needs to get over the end of the drawn-out piping P (corrugated pipe P1). Therefore, the in-line piping P is prevented from being inadvertently detached from the socket portion 4 during the in-line operation.

  As shown in FIG. 10, the cable insertion tube 2 can be connected to a plurality of insertion tubes 2A, 2B,... It can be adapted to.

  That is, the tightening joint portion 13 has a ring-shaped stopper 13C for locking both ends of the insertion tubes 2A and 2B at the central portion of the inner peripheral surface of the cylinder, and both end openings through the stopper 13C. The insertion tubes 2A and 2B are fitted on the inner circumferences on the 13A and 13B sides.

  Further, as another connection form by the tightening joint portion 13, a large number of inward claw pieces (not shown) having flexibility in the inner and outer peripheral directions are arranged at predetermined intervals in the circumferential direction at the distal end of the base side pipe 11. A tightening joint portion 13 having a cylindrical chuck ring (not shown) and a fastening ring (not shown) for fastening the inward claw pieces in the inner circumferential direction is provided.

  And it has the extension side pipe 12 inserted in the inside of the base side pipe 11 from the fastening joint part 13 side, pulls out the extension side pipe 12 to arbitrary length from the base side pipe 11, and the said fastening joint part 13 The cable insertion tube 2 itself can be expanded and contracted by being fastened and fixed by a fastening ring (not shown).

  As shown in FIGS. 11 and 12, a trumpet-shaped guide portion 14 that gradually expands outward is formed at the base end portion of the base side pipe 11, and the base end of the base side pipe 11 is formed. The towing wire L can be smoothly routed from the section.

  Below, the piping wiring process using the auxiliary tool 1 for piping wiring is demonstrated in detail.

  First, in the case where the end portion of the line piping P protrudes from the ceiling slab S in an oblique direction, the flexible tube 3 is bent so that the socket portion 4 faces the end portion of the line piping P.

  Next, by holding the cable insertion pipe 2 in the hand and pushing the insertion opening 6 of the socket portion 4 through the insertion pipe 6, the insertion pipe 6 is inserted into the insertion opening 6. Insert the end.

  And the hook part 7 of the socket part 4 is latched by the wave groove P2 located in the lowest end part of the piping P (corrugated pipe P1) for wiring, for example.

  Next, a pulling wire L made of, for example, steel is inserted from the guide portion 14 (the other end opening portion) at the proximal end portion of the cable insertion tube 2, and the pulling wire L is continuously pushed in. Then, the towing wire L is fed into the through-pipe P through the flexible pipe 3 and the socket portion 4 of the through-pipe auxiliary tool 1, and the tow wire is connected from the opposite end of the through-pipe P. Pull out L.

  Next, the electrical cable K is connected to the leading end of the drawn pulling wire L, and then the pulling wire L is pulled back to the original insertion end side of the passing wire P, thereby passing through the piping P. The electric cable K is routed inside.

  After the wiring, the pulling wire L is removed from the electric cable K, and the electric cable K is connected to an electric device (not shown).

  In addition, although not illustrated one by one, the present invention is implemented with various modifications within the scope not departing from the gist thereof.

  The piping line auxiliary tool according to the present invention can be used for various operations as an auxiliary tool that allows an electric cable to be easily passed through a piping for driving into a high ceiling slab of a construction. It is widely used in the field.

S ... Ceiling slab K ... Electric cable P ... Pipe for connection P1 ... Wave pipe P2 ... Wave groove L ... Tug wire Q ... Worker W ... Concrete wall 1 ... Auxiliary tool for pipe connection 2 ... Cable insertion pipe 2A ... insertion tube 2B ... insertion tube 3 ... flexible tube 4 ... socket part 4A ... body part 5 ... joint part 6 ... introduction opening 7 ... hook part 7A ... notch part 8 ... locking projection 8A ... first inclined surface 8B ... first 2 Inclined surface 11 ... Base side pipe 12 ... Extension side pipe 13 ... Tightening joint part 14 ... Guide part 20 ... Cylindrical body 20A ... Stopper 20B ... Stopper projection 21 ... Chuck ring 21A ... Inward claw piece 21B ... Stopper projection 31 ... Chuck ring 31A ... Inward claw piece 32 ... Fastening ring 100 ... Portable worktable 101 ... Fall prevention tool

Claims (5)

  A piping line auxiliary tool for passing an electric cable through a piping line driven into a ceiling slab of a building, the pipe line auxiliary tool is a long cable insertion pipe, A flexible pipe 3 provided on one end side of the cable insertion pipe via a joint part, and a socket that is provided on one end side of the flexible pipe and that can be connected to an end part of a pipe for wiring passing through the ceiling slab The socket portion has an introduction opening formed in a trumpet shape that gradually expands toward the opening edge of the tip on the opening side of the tip of the barrel formed in a cylindrical shape. And a peripheral wall of the trunk portion is provided with a plurality of hook portions for locking the inserted piping for passage inside the trunk portion, and the hook portion is provided in the peripheral wall of the trunk portion with the introduction opening. Cantilever with a substantially inverted U-shaped notch toward the side Pipe communication lines for aid, characterized in that it is formed in the arm-shaped.   The pipe for passing line is formed of a corrugated pipe having flexibility, and the hook portion is positioned above the wave groove at the lowermost end of the corrugated pipe or the wave groove at the lowermost end. The auxiliary tool for pipe passage according to claim 1, further comprising a triangular claw-like locking projection at a tip so as to be engaged with the wave groove.   The locking projection has a gentle first inclined surface on the surface side that receives the end portion of the inserted through-line pipe, and a second surface side that receives the end portion of the drawn-out line piping that is steep. The auxiliary tool for piping passage according to claim 2, wherein the auxiliary tool is a sloping surface.   The cable insertion tube includes a base side pipe in which a tightening joint portion is provided at a distal end and a trumpet-shaped guide portion that is gradually expanded outward is formed at a base end portion, and a tightening joint portion. An extension-side pipe inserted into the base-side pipe, the extension-side pipe is pulled out from the base-side pipe to an arbitrary length, and is tightened and fixed by the tightening joint portion, whereby the cable insertion tube itself is The auxiliary tool for piping passage according to claim 1, which is extendable and contractible.   The said cable insertion pipe | tube 2 is an auxiliary tool for piping connection of Claim 4 which has connected the some penetration pipe | tube via several fastening joint parts.

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