JP2006271020A - Corrugated tube mounting jig - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a corrugated tube mounting tube which enables the user to mount a corrugated tube surely and easily on a cable and can improve the workability in mounting. <P>SOLUTION: This corrugate tube mounting jig 10, which is used to mount a corrugated tube C having a slit C1 longitudinally onto a cable W, comprises a guide member 12 which has an intrusion part 13 whose tip for cleaving the slit C1 of the corrugate tube C is made hemispherical on the side of its front and guides the corrugated tube C, being inserted into the corrugated tube C, a supporting member 14 which consists of a handhold and a plate-shaped coupling which couples it with the guide member 12 and shifts the guide member 12 relatively in the longitudinal direction of the corrugated tube C, and a cable clamp 16 which is attached to the support member 14 and fixes a cable W, inserted from its rear side to the guide member 12. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a corrugated tube mounting jig for mounting a corrugated tube on an electric wire in order to protect a wire harness and other electric wires (including optical cables).

  When attaching a wire harness or other electric wires to a vehicle body, a floor of a building, a wall, or the like, a synthetic resin or metal corrugated tube may be attached to the electric wires in order to protect the electric wires. The corrugated tube has a slit in the longitudinal direction of the bellows-like tubular body, and the corrugated tube is attached to the electric wire by expanding the slit and inserting the electric wire into the tube. Conventionally, such work has been performed manually by an operator, but the work efficiency is poor, and if the work is continued for a long time, the hand is damaged.

  Therefore, recently, as shown in FIGS. 7 (a) and 7 (b), in order to attach the corrugated tube C having the slit C1 in the longitudinal direction to the electric wire W, the one plate material is formed into a substantially U shape. It has a curved shape, and the U-shaped bottom part 2 is used as a guide part for the electric wire W, and the upper sides of two substantially parallel side parts 3 and 3 sandwiching the U-shaped bottom part 2 are formed into the U-shaped bottom part 2. In contrast, the edges of the two sides are bent outward from each other to widen the slit C1 of the corrugated tube C, and the electric wire W guided by the U-shaped bottom 2 is inserted into the tube C. The corrugated tube mounting jig 1 having the flange edges 4 and 4 which are inserted and guided so as to mount the corrugated tube C on the electric wire W has come to be used. The corrugated tube mounting jig 1 is such that the end portions 4a, 4a of the flange edges 4, 4 on the tip 1a side of the jig 1 are positioned higher than the electric wire W guided by the U-shaped bottom portion 2. In addition, the flange edges 4 and 4 are formed in a cut shape.

  In order to attach the corrugated tube C to the electric wire W using this attachment jig 1, as shown in FIG. 7 (b), the electric wire W is first applied to the U-shaped bottom portion 2 as a guide portion, and the flange edge 4 and 4 are inserted into the corrugated tube C from the slit C1 of the corrugated tube C, and the flange edges 4 and 4 are engaged with both end faces (not shown) of the slit C1.

  Next, the corrugated tube C is fed in the direction of the electric wire W as shown by a black arrow in FIG. 7B while fixing the electric wire W and the mounting jig 1 so as not to shift. And while corrugated tube C is guided to the direction of the electric wire W by engagement with the end face of the slit C1 and the flange edges 4, 4, the slit edge C1 is expanded by the flange edges 4, 4, and the bottom of the U-shape After inserting the electric wire W guided by 2 into the tube C and covering the electric wire W with the corrugated tube C, the gap of the slit C1 is closed by the elastic contraction force of the tube itself, and the corrugated tube C is attached ( Patent Document 1).

Japanese Patent No. 3252589

  According to the conventional corrugated tube mounting jig 1, the corrugated tube C is moved to the side of the electric wire W guided by the U-shaped bottom 2 while expanding the slit C <b> 1 by the flange edges 4, 4 of the mounting jig 1. When the expanded slit C1 of the tube C is pushed into the electric wire W and the electric wire W is inserted into the tube C, the gaps of the slit C1 are the end portions 4a and 4a on the distal end 1a side of the jig 1. After passing through the tube, the tube contracts due to the elastic contraction force of the tube itself, and the electric wire W may not be smoothly inserted into the corrugated tube C. For this reason, there is a problem that the corrugated tube C cannot be reliably attached to the electric wire W, and the workability of the attachment is lowered.

  The present invention was born in view of the above, and an object of the present invention is to provide a corrugated tube mounting jig that can securely and easily mount a corrugated tube on an electric wire and can further improve mounting workability. To do.

  In order to achieve the above object, a corrugated tube mounting jig according to claim 1 of the present invention is a corrugated tube mounting jig for mounting a corrugated tube having a slit in a longitudinal direction on an electric wire, the front side And a guide member that is inserted into the corrugated tube and guides the corrugated tube, and is provided in the guide member, which is relatively disposed along the longitudinal direction of the corrugated tube. A support member to be moved and an electric wire clamp for fixing an electric wire connected to the rear side of the guide member to the guide member.

  According to a second aspect of the present invention, there is provided a corrugated tube mounting jig according to the first aspect, wherein the guide member is formed of a cylindrical body.

  The corrugated tube mounting jig according to claim 3 of the present invention is the one according to claim 1 or 2, wherein an electric wire clamp is disposed behind the support member, and the front portion of the support member near the guide member. Is formed in a tapered shape.

  A corrugated tube mounting jig according to a fourth aspect of the present invention is the one according to the first, second or third aspect, wherein the electric wire clamp is provided so as to be able to advance and retract toward the guide member and is inserted into the guide member. A clamp shaft that holds the electric wire, an urging member that moves the clamp shaft forward to apply a pressing force to the electric wire, and a lever that moves the clamp shaft backward against the urging force of the urging member to release the electric wire clamp. It is characterized by comprising.

  According to the corrugated tube mounting jig according to claim 1 of the present invention, the guide member has an interrupting portion for expanding the slit of the corrugated tube on the front side, and is inserted into the corrugated tube to guide the corrugated tube; The support member provided in the guide member, and the electric wire clamp which fixes the electric wire connected to the rear part side of a guide member to a guide member are provided. Therefore, in order to attach the corrugated tube to the electric wire, the guide member is relatively moved along the longitudinal direction of the corrugated tube, the slit of the tube is expanded by the interrupting unit, and the support member is attached to the expanded slit. When the guide member is inserted into the corrugated tube while passing through the guide and the corrugated tube is guided by the guide member and the tube is moved relatively to the rear of the guide member, the wire connected to the rear side of the guide member is also guided. It moves with the member and is inserted into the corrugated tube. As a result, even when the gap of the slit of the corrugated tube that has passed through the guide member is narrowed by the elastic contraction force of the tube itself, the electric wire has already been inserted into the corrugated tube, so there is no failure in inserting the electric wire, The corrugated tube can be attached reliably and easily. Furthermore, the workability of mounting can be improved.

  According to the corrugated tube mounting jig according to claim 2 of the present invention, since the guide member is formed of a cylindrical body, it is possible to insert and fix an electric wire into the hole using the cylindrical hole of the guide member. become. Therefore, it is not necessary to separately form a wire insertion hole in the guide member, and the mounting jig can be easily manufactured and the cost can be reduced. Furthermore, the guide member becomes lighter and handling of the mounting jig becomes easier.

  According to the corrugated tube mounting jig according to claim 3 of the present invention, the electric wire clamp is disposed behind the support member, and the front portion of the support member near the guide member is formed in a tapered shape. The end face of the expanded slit does not come into contact with the support member and is not deformed or damaged, and the wire protection performance by the corrugated tube can be maintained well. In addition, since the frictional force between the end face of the slit and the support member is reduced, the guide member can be smoothly inserted into the corrugated tube, and the workability of mounting the corrugated tube can be further improved.

  According to the corrugated tube mounting jig of claim 4 of the present invention, the electric wire clamp clamps the electric wire, the urging member that advances the clamp shaft to apply the pressing force to the electric wire, and retracts the clamp shaft. Since it has a lever for releasing the clamp of the electric wire, the structure of the mounting jig is simplified, and it is easy to manufacture and maintain, can be obtained at low cost, and has excellent durability and can be used stably for a long time. it can.

  Next, embodiments of the present invention will be described in detail with reference to the drawings. 1 is a perspective view showing a preferred embodiment of a corrugated tube mounting jig according to the present invention, FIG. 2 is a cross-sectional view showing an electric wire clamp thereof, and FIG. 3 is an enlarged cross-sectional view of the guide member shown in FIG. FIG. In addition, the same code | symbol is attached | subjected to the thing of the same structure as what was described in the prior art.

  As shown in FIGS. 1 to 3, the corrugated tube mounting jig 10 of the present embodiment mounts a corrugated tube C having a slit C <b> 1 in the longitudinal direction of a bellows-like synthetic resin or metal tube on an electric wire W. Used for. This mounting jig 10 has an interrupting section 13 for expanding the slit C1 of the corrugated tube C on the front side (the side where insertion starts relative to the corrugated tube C), and is inserted into the corrugated tube C. A guide member 12 that guides the corrugated tube C, a support member 14 that is provided on the guide member 12 and relatively moves along the longitudinal direction of the corrugated tube C, and an electric wire connected to the rear side of the guide member 12 And an electric wire clamp 16 for fixing W to the guide member 12.

  In the illustrated example, the guide member 12 is formed of a cylindrical body made of a synthetic resin or a metal and having a circular cross section, and is sealed with a bottom so that the interrupting portion 13 is formed on the front side, and the rear side is opened. Thus, the end of the electric wire W can be inserted therein. The guide member 12 is not a cylindrical body but a solid rod-like body, an interrupting portion 13 is formed on the front side, and an electric wire insertion hole (not shown) for inserting the electric wire W is formed on the rear side. You may do it.

  When the guide member 12 is formed of a cylindrical body, the electric wire W can be inserted into the hole and fixed using the cylindrical hole of the guide member 12. Therefore, it is not necessary to separately form a wire insertion hole in the guide member 12, and the mounting jig 10 can be easily manufactured and the cost can be reduced. Furthermore, since the guide member 12 becomes lightweight and handling of the mounting jig 10 becomes easy, it is preferable.

  In the illustrated example, the interrupting portion 13 is formed by chamfering the tip in a hemispherical shape so that the slit C1 of the corrugated tube C can be smoothly expanded as shown in FIG. Although not shown, the interruption unit 13 may be formed in a conical shape (a bullet head shape) so as to taper toward the tip, and may be formed in a wedge shape with a rounded tip.

  The support member 14 is made of synthetic resin or metal, and includes a rectangular plate-shaped handle 18 and a rectangular plate-shaped connecting portion 20 that connects this to the outer surface of an intermediate portion (in the illustrated example, a substantially central portion) of the guide member 12. Has been. Further, the handle 18 and the connecting portion 20 constituting the support member 14 are provided on the guide member 12 by fastening members such as molding, welding, bolts, and screws. Further, the front surface portion of the support member 14 near the guide member 12 is tapered. 1 shows that the front part 20a of the connecting part 20 is chamfered into an inclined surface shape in the same inclination direction, and that shown in FIG. 4A is that the front part 20b is V-shaped, and FIG. As shown, the front surface portion 20c is chamfered into an arc shape, for example, an arc shape, and is tapered.

  If the front surface portion of the support member 14 near the guide member 12 is formed in a tapered shape, the end surfaces C2 and C2 (see FIG. 3) of the slit C1 expanded in the corrugated tube C are in contact with the support member 14 and deformed. Therefore, the wire protection performance by the corrugated tube C can be maintained well. Further, since the frictional force between the end surfaces C2 and C2 of the slit C1 and the support member 4 is reduced, the guide member 12 can be smoothly inserted into the corrugated tube C, and the workability of mounting the corrugated tube C is further improved. This is preferable.

  The electric wire clamp 16 is disposed behind the support member 14, is provided so as to be able to advance and retract toward the guide member 12, and is inserted from the rear side of the guide member 12 to clamp the electric wire W connected to the rear side. And an urging member 24 that advances the clamp shaft 22 to apply a pressing force to the electric wire W, and is provided on the rear side of the clamp shaft 22, and retracts the clamp shaft 22 against the urging force of the urging member 24. And a lever 26 for releasing the clamp of the electric wire W.

  A portion of the clamp shaft 22 near the rear end is loosely inserted in a vertical direction into a support arm 28 protruding from the guide member 12 at a distance from the guide member 12 on the rear wall portion of the connecting portion 20. It is supported to move forward and backward. Then, the front end portion is inserted into the guide member 12 through the through hole 30 formed in the side wall on the rear side of the guide member 12, thereby being supported by the guide member 12 and inserted into the guide member 12 by the biasing member 24. The end of the electric wire W is clamped and fixed. Further, a lever 26 made of a rectangular plate-like piece is fixed to the rear end portion of the clamp shaft 22 by a tightening screw 32 so as to protrude horizontally toward the front side of FIGS.

  The urging member 24 is made of, for example, a compression coil spring, and is disposed between the support arm 28 and the guide member 12. The urging member 24 includes a lower surface of the support arm 28 and a circular flange 34 protruding from the clamp shaft 22. Is interposed so as to surround the clamp shaft 22. A biasing force that moves the clamp shaft 22 forward toward the guide member 12 is normally applied.

  The electric wire clamp 16 presses the electric wire W, the clamp shaft 22, the urging member 24 that moves the clamp shaft 22 forward to apply a pressing force to the electric wire W, and the lever 26 that moves the clamp shaft 22 backward to release the clamp of the electric wire W. The mounting jig 10 has a simple structure, is easy to manufacture and maintain, can be obtained at a low cost, is excellent in durability, and can be used stably for a long period of time. .

  Next, a method for mounting the corrugated tube C to the electric wire W using the corrugated tube mounting jig 10 of the present invention will be described.

  First, as shown in FIG. 5, the lever 26 of the wire clamp 16 of the mounting jig 10 is lifted upward by hand, and the clamp shaft 22 is retracted against the biasing force of the biasing member 24. Next, while maintaining such a state, the electric wire W is inserted into the guide member 12 from the rear side of the guide member 12 for a predetermined length, the lever 26 is released from the hand, and the clamp shaft 22 is advanced by the urging member 24. Let As a result, the tip of the clamp shaft 22 is pressed against the electric wire W by the urging force of the urging member 24, the electric wire W is fixed to the guide member 12, and the electric wire W is connected to the rear side of the guide member 12.

  Next, the handle 18 of the support member 14 of the mounting jig 10 is grasped with the right hand, and the corrugated tube C is grasped with the left hand, and the tube C is moved in the direction of arrow P toward the interrupting portion 13 of the guide member 13. Then, the open end of the corrugated tube C is pushed into the interrupting section 13, that is, the interrupting section 13 is pushed into the open end of the corrugated tube C.

  Next, as shown in FIG. 6, the corrugated tube C is moved in the direction of arrow P, and the interrupting section 13 expands the slit C1 of the corrugated tube C into a V shape, and the end surface C2 of the expanded slit C1 , The guide member 12 and the electric wire W connected to the rear side thereof are relatively moved and inserted into the corrugated tube C while the connecting portion 20 of the support member 14 and the clamp shaft 22 of the electric wire clamp 16 are passed between C2 and C2. While guiding the corrugated tube C with the guide member 12, the tube C is moved to the rear of the guide member 12.

  In this manner, the corrugated tube C is put on the outer periphery of the electric wire W connected to the rear side of the guide member 12, and the gap of the slit C1 passes through the rear side of the guide member 12, so that it is closed by the elastic contraction force of the tube itself. As a result, the corrugated tube C is sequentially attached to the electric wire W over a predetermined section.

  Next, the corrugated tube mounting jig 10 is pulled out from the corrugated tube C, and the mounting jig 10 is removed from the electric wire W by lifting the lever 26 of the electric wire clamp 16 to release the clamp of the electric wire W. Finish the installation work.

  When the corrugated tube C is mounted on the electric wire W, the corrugated tube C may be moved in the longitudinal direction of the corrugated tube C instead of the corrugated tube C. Moreover, although the electric wire clamp 16 is disposed on both the support member 14 and the guide member 12, it may be disposed on either the support member 14 or the guide member 12. Further, the electric wire clamp 16 may use air such as an air chuck or a hydraulic chuck, a hydraulic cylinder mechanism, an electromagnetic magnet, a screw tightening mechanism, or the like.

  The corrugated tube mounting jig 10 of the present invention has an interrupting portion 13 for expanding the slit C1 of the corrugated tube C on the front side, and is inserted into the corrugated tube C to guide the corrugated tube C; The support member 14 provided on the guide member 12 and the electric wire clamp 16 for fixing the electric wire W connected to the rear side of the guide member 12 to the guide member 12 are provided.

  Therefore, in order to attach the corrugated tube C to the electric wire W, the guide member 12 is moved relatively along the longitudinal direction of the corrugated tube C, and the slit C1 of the tube C is expanded by the interrupting unit 13 to expand. The guide member 12 is inserted into the corrugated tube C while the support member 14 is passed through the slit C 1, and the tube C is relatively moved rearward of the guide member 12 while the corrugated tube C is guided by the guide member 12. Then, the electric wire W connected to the rear side of the guide member 12 also moves with the guide member 12 and is inserted into the corrugated tube C. As a result, even if the gap of the slit C1 of the corrugated tube C that has passed through the guide member 12 is narrowed by the elastic contraction force of the tube itself, the electric wire W has already been inserted into the corrugated tube C. The failure is eliminated, and the corrugated tube C can be reliably and easily attached to the electric wire W. Furthermore, the workability of mounting can be improved.

It is a perspective view which shows preferable embodiment of the corrugated tube mounting jig which concerns on this invention. It is sectional drawing which shows the electric wire clamp of embodiment of FIG. It is the expanded sectional view which cut | disconnected the guide member of embodiment of FIG. 1 by XX. In the connection part which comprises the support member of embodiment of FIG. 1, the modification of the shape of a front part is shown, (a) is V-shaped, (b) is an enlarged view of arc shape. It is a perspective view which shows the state which connects an electric wire to the guide member of the mounting jig of embodiment of FIG. 1, and starts the mounting | wearing operation | work of a corrugated tube. It is a perspective view which shows the state which has mounted | worn the corrugated tube to the electric wire using the mounting jig of embodiment of FIG. The conventional corrugated tube mounting jig | tool is shown, (a) is the perspective view, (b) is a perspective view which shows the state which has mounted | worn the corrugated tube to the electric wire using the mounting jig.

Explanation of symbols

W Electric wire C Corrugated tube C1 Slit C2 End face 10 Corrugated tube mounting jig 12 Guide member 13 Interrupting part 14 Supporting member 16 Electric wire clamp 18 Handle 20 Connecting part 20a, 20b, 20c Front part 22 Clamp shaft 24 Biasing member 26 Lever 28 Support Arm 30 Through hole 32 Tightening screw 34 Butt

Claims (4)

  A corrugated tube mounting jig for mounting a corrugated tube having a slit in the longitudinal direction on an electric wire, having an interrupting portion for expanding the slit of the corrugated tube on the front side, and being inserted into the corrugated tube A guide member for guiding, a support member provided on the guide member for relatively moving the corrugated tube along the longitudinal direction of the corrugated tube, and an electric wire clamp for fixing an electric wire connected to the rear side of the guide member to the guide member A corrugated tube mounting jig characterized by comprising:   The corrugated tube mounting jig according to claim 1, wherein the guide member is formed of a cylindrical body.   The corrugated tube mounting jig according to claim 1, wherein an electric wire clamp is disposed behind the support member, and a front surface portion of the support member near the guide member is formed in a tapered shape.   The electric wire clamp is provided so as to be movable forward and backward toward the guide member, and includes a clamp shaft that presses the electric wire inserted into the guide member, an urging member that advances the clamp shaft and applies a pressing force to the electric wire, and a clamp shaft. The corrugated tube mounting jig according to claim 1, 2 or 3, further comprising a lever that retracts against a biasing force of the biasing member and releases a clamp of the electric wire.

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