JP2014155256A - Wire protector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow for arbitrary adjustment of the axial length of a wire protector, depending on the axial length of a wire to be protected.SOLUTION: A wire protector attached to cover a wire when performing hot line work comprises a tube part telescopic in the axial direction of the wire and having both open ends. The tube part has a gap formed in the axial direction thereof, so that the wire is inserted to the inside of the tube part and held on the inside of the tube part.

Description

  The present invention relates to a wire armor.

  As a device for protecting an electric wire when performing a hot wire operation, for example, a protective tube attached to the electric wire is known (for example, Patent Documents 1 and 2).

JP 2000-188816 A JP 2003-289615 A

  Generally, the wire protective tube including the protective tube described in Patent Documents 1 and 2 has a certain length in the axial direction, and the length cannot be arbitrarily adjusted. Therefore, when the axial length of the protective tube is longer than the axial length of the electric wire to be protected, the protective tube cannot be attached to the electric wire. Any type of protective tube that can be cut with a scissors can be attached to the wire to be protected, but for example, indirect hot line work using a tool such as a yatco or an insulating rod, cut the protective tube. Is troublesome. Also, the method of cutting the protective tube is not suitable for repeated use of the protective tube.

  The main present invention for solving the above-mentioned problems is an electric wire protector that is mounted so as to cover an electric wire when performing a hot wire operation, and is a tube that can be expanded and contracted along the axial direction of the electric wire and is open at both ends. The tube portion has a gap portion formed along the axial direction of the tube portion so that the electric wire is inserted inside the tube portion and held inside the tube portion. .

  Other features of the present invention will become apparent from the accompanying drawings and the description of this specification.

  According to the present invention, the axial length of the wire protector can be arbitrarily adjusted according to the axial length of the electric wire to be protected.

It is a perspective view which shows the wire protector in 1st Embodiment of this invention. It is a side view which shows the state (a) extended in the longitudinal direction of the electric wire protector in 1st Embodiment of this invention, and the (b) contracted state. It is sectional drawing which cut the electric wire protector in 1st Embodiment of this invention by the AA line of FIG. It is sectional drawing which cut the electric wire protector in 1st Embodiment of this invention by the BB line of FIG. It is sectional drawing which cut the electric wire protector in 1st Embodiment of this invention by the AA line of FIG. 2 in the state which opened the clearance gap. It is sectional drawing which cut the electric wire protector in 1st Embodiment of this invention by the BB line of FIG. 2 in the state which opened the clearance gap. It is a perspective view which shows the electric wire protector in 2nd Embodiment of this invention. It is a side view which shows the state (a) extended in the longitudinal direction and (b) the contracted state of the wire protector in 2nd Embodiment of this invention. It is sectional drawing which cut the electric wire protector in 2nd Embodiment of this invention by CC line of FIG. It is sectional drawing which cut the electric wire protector in 2nd Embodiment of this invention by the DD line of FIG. It is a front view which shows (a) the closed state and (b) the open state of one opening-and-closing member of the wire protector in 1st and 2nd embodiment of this invention. It is a side view which shows another example of one opening / closing member of the wire protector in 1st and 2nd embodiment of this invention. It is a front view which shows another example of the ring member of the wire protector in 1st and 2nd embodiment of this invention. It is a figure which shows an example of the usage method of the wire protector in 1st Embodiment of this invention. It is a figure which shows an example of the usage method of the wire protector in 2nd Embodiment of this invention. It is a perspective view which shows the electric wire protector in 3rd Embodiment of this invention. It is a perspective view which shows the state which decomposed | disassembled the wire protector in 3rd Embodiment of this invention. It is sectional drawing of the electric wire protector in 3rd Embodiment of this invention.

  At least the following matters will become apparent from the description of this specification and the accompanying drawings.

[First embodiment]
=== Configuration ===
Hereinafter, with reference to FIG. 1 thru | or FIG. 6 and FIG. 11, the wire protector in this embodiment is demonstrated. In the present embodiment, as shown in FIG. 1, the longitudinal direction of the tube portion 2 is the y-axis direction, the vertical direction is the z-axis direction, and the direction perpendicular to the y-axis and the z-axis is the x-axis direction.

FIG. 1 is a perspective view showing an electric wire protector according to the present embodiment, and shows a state in which an electric wire indicated by a broken line is held inside thereof.
The electric wire protector 1 is a device that protects an electric wire by covering the electric wire 5 when performing a hot wire operation, and includes a pipe portion 2 and a pair of opening and closing members 3.

<Composition of pipe part>
The tube portion 2 is for inserting the electric wire 5 inside the tube portion 2 and holding it inside the tube portion 2, and is formed of a soft sheet member 22.

  The soft sheet member 22 is, for example, a sheet-like member made of a synthetic resin such as polyethylene, such as a so-called blue sheet, and has poor elasticity, and the longitudinal direction and the radial direction of the tube portion 2 (X axis and Z axis). Due to the force acting in the direction of the surface formed by (1), it is easily deformed in the direction of the force. Further, as shown in FIG. 2, the soft sheet member 22 changes from the diameter φ2 to the diameter φ1 after the diameter in the direction orthogonal to the axial direction of the electric wire 5 changes from the diameter φ1 to the larger diameter φ2. This is repeated along the axial direction of the electric wire 5, and the bellows shape is exhibited. As will be described later, a hard ring member 23 is provided in a portion corresponding to the diameter φ2 of the soft sheet member 22. Therefore, the tube portion 2 is extendable along the axial direction of the electric wire 5.

  The soft sheet member 22 is further provided with a gap 21 along the longitudinal direction of the tube portion 2 while opening both ends thereof. As described above, the hard ring member 23 is provided in the portion corresponding to the diameter φ2 of the soft sheet member 22. The ring member 23 is an annular member that is elastically biased in the direction of closing the gap portion 21. It is a member. As shown in FIG. 4, the ring member 23 includes a cut opening 23 a for inserting and holding the electric wire 5 inside, and the width of the cut opening 23 a in the x-axis direction is the diameter of the electric wire 5. Although it is smaller, it elastically deforms and opens larger than the diameter of the electric wire 5. Therefore, the gap formed by the gap portion 21 widens or narrows with elastic deformation of the ring member 23 and opening / closing of a pair of opening / closing members 3 described later in the x-axis direction. Therefore, the gap portion 21 holds the electric wire inside the tube portion 2 while the electric wire is inserted inside the tube portion 2 via the gap portion 21.

It is not necessary for the tube portion 2 to be formed of an insulating material, but when the tube portion 2 is formed of an insulating material, the protective equipment can be used to prevent electric shock.
Further, as another configuration for giving a predetermined bias to the ring member 23, as shown in FIG. 13, the ring member 23 is composed of two arcuate members in which the end opposite to the cut 23a is rotatably coupled. It is also possible to attach a fire spring to the rotating shaft and bias it in the direction of closing the cut opening 23a.

<Configuration of opening / closing member>
The pair of opening / closing members 3 are members for opening / closing the gap portion 21 and holding the electric wire 5, and are attached to both ends of the tube portion 2 in the longitudinal direction.
As shown in FIG. 11, the opening / closing member 3 is configured by a pair of pinching pieces each having an arm portion 31 and a grip portion 32 being rotatably connected around a shaft 33. The pair of arm portions 31 is a portion for sandwiching the electric wire 5 and includes an arc-shaped portion 31a and a semicircular electric wire holding portion 31b. The electric wire holding part 31b is formed, for example with the foamable raw material, and is adhere | attached with the adhesive agent, for example inside the arc-shaped part 31a. The pair of electric wire holding portions 31b are opposed to each other with the substantially flat surface inside, and when the opening / closing member 3 holds the electric wires 5, the substantially flat surfaces of the pair of electric wire holding portions 31b are along the electric wires 5. The electric wire 5 is sandwiched while being deformed. Therefore, when the pair of electric wire holding portions 31b sandwich the electric wire 5, the positional relationship between the electric wire protector 1 and the electric wire 5 is maintained.

  The opening / closing member 3 is biased to close the arm portion 31. Therefore, when the pair of gripping portions 32 is closed (that is, the end portions 32a of the pair of gripping portions 32 opposite to the shaft 33 approach each other), the pair of arm portions 31 opens, and the pair of gripping portions 32 opens. For example, the pair of arm portions 31 are closed. Further, the end portion 32a of the gripping portion 32 opposite to the shaft 33 is opened as shown in FIG. 1, and the tip of the arm portion of a working tool such as a yatco can be inserted. Therefore, if, for example, the tip of the arm portion of the yatco is inserted into the openings provided in the pair of gripping portions 32 of the opening / closing member 3, the opening / closing member 3 moves with the movement of the yatco, and in conjunction with the opening / closing of the yatco Close and open.

  As shown in FIG. 12, the gripping portion of the opening / closing member 3 is thick enough to reach half the length in the longitudinal direction of the tube portion 2 along the longitudinal direction (x-axis direction) of the tube portion 2. It may be formed. With such a configuration, the ring member 23 can be supported when the cut end 23a of the ring member 23 is opened against the elastic force of the ring member 23 for mounting to the electric wire 5 described later. It becomes easier to open the cut 23a.

=== Usage ===
Hereinafter, with reference to FIG. 14, the usage method of the wire protector in this embodiment is demonstrated. FIGS. 14A and 14B show an example of how to use the wire protector in the present embodiment.

  First, the wire protector 1 is brought into a state in which the tube portion 2 is contracted in the longitudinal direction as shown in FIG. And when the wire protector 1 is attached by indirect hot-wire work using a yatco, the tip of the arm part of the yatco is inserted into the open end of each gripping part of the pair of opening / closing members 3, respectively. Is closed and the arms 31 of the pair of opening and closing members 3 are opened. When the arm portion 31 of the pair of opening / closing members 3 is opened, a portion in the vicinity of the pair of opening / closing members 3 in the gap portion 21 of the pipe portion 2 is opened. With this state maintained, as shown in FIG. 14A, the wire protector 1 is brought close to the wire 5, and the wire 5 is inserted into the tube portion 2 through the gap portion 21. Specifically, for example, the electric wire 2 is pressed against the cut 23 a of the ring member 23, the cut 23 a is expanded from the diameter of the electric wire 5 against the elastic force of the ring member 23, and the electric wire 2 is placed inside the pipe portion 2. insert. At that time, the gap 21 (or cut 23a) can be uniformly pressed against the electric wire 5 so that the gap 21 is substantially parallel to the electric wire 5, and the electric wire 5 can be inserted into the tube portion 2 at once. Alternatively, after the electric wire 5 is first inserted into the gap portion 21 (or the cut 23a) in the sufficiently open portion near the one opening / closing member 3, the gap portion 21 in the portion that is not sufficiently opened You may make it open sequentially toward the opening-and-closing member 3.

  When the corresponding opening / closing member 3 a is closed at one end 5 a of the portion of the electric wire 5 to be protected, the corresponding opening / closing member 3 a is attached to the position 5 a of the electric wire 5. When one opening / closing member 3a is attached to the electric wire 5 in this way, for example, the one opening / closing member 3a is attached to the electric wire 5 that draws an arc like an edge line or a lead wire of a transformer. The position 5a of the electric wire 5 is maintained. In this state, as shown in FIG. 14B, when the other opening / closing member 3b is opened and moved in the direction away from the opening / closing member 3a along the axial direction of the electric wire 5, the bellows-shaped tube portion 2 expands. Thus, the wire protector 1 covers the wire 5 along its axial direction. The other opening / closing member 3b is moved to the other end 5b of the portion of the electric wire 5 to be protected, and the opening / closing member 3b is closed. Thus, the opening / closing member 3b is attached to the other end 5b of the portion of the electric wire 5 to be protected, and the pair of opening / closing members 3a and 3b are respectively maintained at both ends 5a and 5b of the portion of the electric wire to be protected. Even if the wire protector 1 does not reach the length of the portion of the wire 5 to be protected even if it is extended to the maximum in the longitudinal direction of the tube portion 2 (y-axis direction in FIG. 1), a plurality of wire protectors 1 are provided. By using it, the electric wire 5 to be protected can be protected without shortage.

  Further, when removing the wire protector 1 from the wire 5, the following procedure is used. That is, one open / close member 3b holding the electric wire 5 is opened, and the open / close member 3b is moved close to the other open / close member 3a along the axial direction of the electric wire 5 with the wire open. And after making the electric wire protector 1 into the contracted state like FIG.2 (b), the opening-and-closing member 3a is also opened. By opening the pair of opening / closing members 3a and 3b, the portion in the vicinity of the pair of opening / closing members 3a and 3b in the gap portion 21 of the pipe portion 2 expands the gap formed by the gap portion 21 (x in FIG. 1). Axial direction), whereby the electric wire 5 can be removed from the gap portion 21 and the pair of opening / closing members 3a and 3b. When removing the electric wire 5 to the outside of the tube portion 2 through a portion where the gap formed by the gap portion 21 is not sufficiently open to pass the electric wire 5, for example, the pair of opening and closing members 3a and 3b are After the electric wire 5 is uniformly in contact with the gap portion 21 and the inside of the cut 23a of the ring member 23, the ring member 23 is further elastically deformed by the electric wire 5 to open the cut 23a (for example, In FIG. 1, it may be moved in the negative z-axis direction). Alternatively, the electric wire 5 is removed from the gap portion 21 of the sufficiently opened portion in the vicinity of one opening / closing member (for example, 3a), and the gap portion 21 is sequentially expanded toward the other opening / closing member (for example, 3b). It is also possible to remove 5.

[Second Embodiment]
=== Configuration ===
Hereinafter, with reference to FIG. 7 thru | or FIG. 11, the structure of the wire armor in this embodiment is demonstrated. The wire protector 1 according to the second embodiment is provided with a pair of pins 41 provided on one opening / closing member 3 and an insertion hole 42 corresponding to the pin 41 provided on the outside of each ring member 23. Except for this, the configuration is the same as that of the wire protector in the first embodiment. Therefore, the same reference numerals are given to the same components as those in the explanatory diagrams (FIGS. 1 to 6) of the first embodiment, and the description thereof is omitted.

As shown in FIG. 7, the pair of pins 41 described above are provided in a pair of arm portions 31 of one opening / closing member 3 (here, 3 a), and the outside of the tube portion 2 is opposite to the tube portion 2. It extends toward the opening on the side (that is, the other opening / closing member 3b). By inserting the pin 41 into the insertion hole 42, the pair of opening / closing members 3, the gap portion 21 of the pipe portion 2, and the cut opening 23 a of the ring member 23 can be opened and closed in conjunction with each other.
As shown in FIG. 10, two insertion holes 42 are provided in one ring member 23 corresponding to the pair of pins 41. In the present embodiment, the two insertion holes 42 are provided symmetrically from the portion located in the middle of the z-axis direction of the ring member 23 toward the outside, but the positions of the insertion holes 42 are the same. It is not limited, and it is not necessary to provide it symmetrically. However, in consideration of the attachment of the wire protector 1 to the electric wire 5 by the indirect hot wire operation, it is possible to provide the insertion hole 42 in the range from the position of the insertion hole 42 shown in the present embodiment to the cut 23a. This is preferable in terms of an increase in the moment of force about the rotation shaft 33 and the labor saving of the accompanying mounting work.

=== Usage ===
Hereinafter, with reference to FIG. 15, the usage method of the wire protector in this embodiment is demonstrated. FIGS. 15A and 15B show an example of a method of using the wire protector in the present embodiment.

The method of using the wire protector in the present embodiment is basically the same as the method of using the wire protector in the first embodiment, and the main difference is in the operation when opening the gap 21.
That is, when the wire protector in this embodiment is attached to and detached from the wire 5, the tube portion 2 is contracted in the longitudinal direction, and the pair of pins 41 of the opening / closing member 3 a are inserted into the insertion holes 42 of the ring members 23. When the pair of opening / closing members 3a and 3b are opened in this state, all the ring members 23 are opened as a unit, and accordingly, the gap portion 21 of the pipe portion 2 is also opened. Therefore, the wire protector 1 can be easily attached to and detached from the wire 5 even in indirect hot wire work performed using a working tool such as a Yatco.

[Third embodiment]
=== Configuration ===
Hereinafter, with reference to FIG. 16 thru | or FIG. 18, the structure of the wire armor in this embodiment is demonstrated. FIG. 16 is a perspective view showing the wire protector according to the present embodiment, FIG. 17 is an exploded perspective view of the wire protector according to the present embodiment, and FIG. 18 shows the protruding piece and the wire protector according to the present embodiment. It is sectional drawing cut by the surface which crosses a guide groove.

  In this embodiment, the pipe part 2 is provided with the 1st thru | or 3rd pipe parts 2a-2c which are three cylindrical members. Each of the first to third pipe portions 2a to 2c has both open ends, and has first to third gap portions 21a to 21c formed along the respective axial directions (the direction of the one-dot chain line in FIG. 17). Have. The 1st thru | or 3rd clearance gap parts 21a-21c each insert the electric wire 5 inside the 1st thru | or 3rd pipe parts 2a-2c, and hold | maintain inside the 1st thru | or 3rd pipe parts 2a-2c. Part. The gap portions 21a to 21c of the first to third tube portions 2a to 2c are formed as follows, taking the gap portion 21a of the first tube portion 2a as an example. That is, as shown in FIG. 16, the gap portion 21a of the first tube portion 2a includes a pair of inclined surfaces that are directed inward from the outer peripheral surface of the first tube portion 2a and a pair of inclined surfaces that are directed outward from the inner peripheral surface. Are formed along the axial direction of the first tube portion 2a.

  The first to third pipe portions 2a to 2c are elastically biased so as to close the first to third gap portions 21a to 21c, respectively. Such elastic urging causes the first to third gap portions 21a to 21c to open when the first to third tube portions 2a to 2c insert the electric wire 5 inside (and remove from the inside to the outside). When the electric wire 5 can be passed through and the electric wire 5 is held inside, the first to third gap portions 21a to 21c can be closed so as not to drop the electric wire 5.

In addition, the inner diameter of the third tube portion 2c in the direction orthogonal to the axial direction is longer than the outer diameter of the second tube portion 2b, and the inner diameter of the second tube portion 2b is longer than the outer diameter of the first tube portion 2a.
The 1st pipe part 2a is provided with a pair of protrusion piece 25a which protruded from the outer peripheral surface and was formed along the axial direction of the 1st pipe part 2a. The second pipe portion 2b includes a pair of guide grooves 27b corresponding to the pair of protruding pieces 25a formed on the inner peripheral surface along the axial direction of the second pipe portion 2b, and the outer periphery thereof. The surface is provided with a pair of projecting pieces 25b projecting along the axial direction of the second tube portion 2b. Moreover, the 3rd pipe part 2c is equipped with a pair of guide groove 27c corresponding to the said pair of protrusion piece 25b formed along the axial direction of the 3rd pipe part 2c in the internal peripheral surface.
As shown in FIG. 17, one end in the axial direction of the pair of projecting pieces 25a provided on the first pipe portion 2a further projects to form a locking piece 26a. Similarly, a locking piece 26b is formed at one end in the axial direction of the pair of protruding pieces 25b provided on the second pipe portion 2b. On the other hand, as shown in FIG. 18, both end portions 28b of the pair of guide grooves 27b provided in the second pipe portion 2b are brought into contact with the locking pieces 26a of the pair of protruding pieces 25a of the corresponding first pipe portion 2a. For this reason, the locking piece 26a of the first tube portion 2a cannot pass over both end portions 28b of the guide groove of the second tube portion 2b. Therefore, the axial movement of the first tube portion 2a with respect to the second tube portion 2b is restricted. Further, both end portions 28c of the pair of guide grooves 27c provided in the third tube portion 2c also come into contact with the locking pieces 26b of the pair of protruding pieces 25b of the corresponding second tube portion 2b. The axial movement of the portion 2b relative to the third tube portion 2c is restricted.
Therefore, the first tube portion 2a is guided by the guide groove 27b of the second tube portion 2b, and the second tube portion 2b is guided by the guide groove 27c of the third tube portion 2c, respectively. It slides without dropping along the axial direction of the three pipe portions 2c. That is, the 1st thru | or 3rd pipe parts 2a-2c are couple | bonded so that a slide along the axial direction of the electric wire 5 is possible.

  In the present embodiment, the wire protector 1 does not include the pair of opening / closing members 3, but even if the pair of opening / closing members 3 are attached to both ends in the longitudinal direction of the tube portion 2 as in the first embodiment. Good.

=== Usage ===
Hereinafter, the usage method of the wire protector in this embodiment is demonstrated.
Attachment of the wire protector 1 to the wire 5 in the present embodiment is performed as follows, for example.
In order to shrink the tube portion 2 in the longitudinal direction, the first tube portion 2a is slid with respect to the second tube portion 2b, and the second tube portion 2b is slid with respect to the third tube portion 2c. The portion 2a is accommodated inside the second tube portion 2b, and the second tube portion 2b is accommodated inside the third tube portion 2c. Then, against the elastic force applied to the first to third tube portions 2a to 2c, the respective gap portions 21a to 21c are expanded, and the electric wire 5 is connected to the third tube portion 2c from the formed gap. To the inside of the second tube portion 2b and the first tube portion 2a.
After inserting the electric wire 5, the first to third gaps are closed, the first tube portion 2a is slid with respect to the second tube portion 2b, and the second tube portion 2b is slid with respect to the third tube portion 2c. The part 2 is stretched along its longitudinal direction until a desired length is reached. In addition, when the pipe part 2 is shorter than the part of the electric wire 5 which should be protected, the part which should be protected is covered using the electric wire protector 1 in multiple numbers.

  Further, in order to remove the wire protector 1 from the wire 5, the first tube portion 2a is accommodated inside the second tube portion 2b, and the second tube portion 2b is accommodated inside the third tube portion 2c. The first to third tube portions 2a to 2c are contracted along the respective longitudinal directions. And after expanding each gap | interval part 21a-21c against the elastic force given to the 1st thru | or 3rd pipe parts 2a-2c, the electric wire 5 is made into 1st from the clearance gap formed by it. The tube portion 2a is removed to the outside of the second tube portion 2b and the third tube portion 2c.

  In addition, when the wire protector 1 in this embodiment is provided with a pair of opening and closing members 3, it is possible to widen the gap portions 21a to 21c by opening the pair of opening and closing members 3, and the electric wires It is possible to maintain the protective device 1 at a desired position of the electric wire 5.

  As described above, the wire protector 1 includes the pipe portion 2 that is open at both ends. The tube portion 2 can be expanded and contracted along the axial direction of the electric wire 5. Moreover, the pipe part 2 has a gap part 21, and the gap part 21 extends along the axial direction of the pipe part 2 so that the electric wire 5 is inserted inside the pipe part 2 and held inside the pipe part 2. Is formed. With such a configuration, the wire protector 1 can arbitrarily adjust the length of the tube portion 2 in the longitudinal direction according to the length of the portion of the wire 5 to be protected.

  Further, the pipe portion 2 indicates that the diameter in the direction perpendicular to the axial direction of the electric wire 5 changes from the diameter φ1 to the diameter φ2 larger than the diameter φ1 and then changes from the diameter φ2 to the diameter φ1 in the axial direction of the electric wire 5. Repeatedly, it has a bellows shape. With such a configuration, the wire protector 1 allows the wire 5 to be protected in the axial direction even when the portion of the wire 5 to be protected draws an arc shape, for example, an edge line or a lead wire of a transformer. It is possible to cover along.

  In addition, the tube portion 2 is formed of a soft sheet member 22, and a ring member 23 that is elastically biased in a direction of closing the gap portion 21 is provided in a portion of the tube portion 2 having a diameter φ2. With such a configuration, in the wire protector 1, the wire 5 is not easily detached from the inside of the tube portion 2 or the ring member.

  A pair of opening / closing members 3 are attached to the openings at both ends of the tube portion 2. The pair of opening / closing members 3 opens the gap 21 when the electric wire 5 is inserted inside the tube 2, and closes the gap 21 and holds the electric wire 5 when holding the electric wire 5 inside the tube 2. . Therefore, the wire protector 1 can maintain the position of the electric wire 5 on which the pair of opening / closing members 3 sandwich the electric wire 5.

  In addition, one of the pair of opening / closing members 3 has a pair of pins 41 that extend outside the tube portion 2 toward the opening on the opposite side of the tube portion 2. An insertion hole 42 is provided outside the tube portion 2. The gap 21 can be opened and closed by opening and closing the pair of opening and closing members 3 in a state where the tube part 2 is contracted in the longitudinal direction and the pin 41 is inserted into the insertion hole 42. Such a configuration is suitable for attachment of the wire protector 1 by indirect hot wire work performed using a work tool such as a Yatco.

  The insertion hole 42 is provided in the ring member 23. In a state where the pin 41 is inserted into the insertion hole 42, the integrity of the pair of opening / closing members 3 and the tube portion 2 is increased, and the pair of opening / closing members 3 can more easily open and close the gap portion 21 of the tube portion 2.

  The pipe part 2 is made of a material having an insulating property. With this configuration, the wire protector 1 can be used not only to protect the wire 5 but also to prevent electric shock.

  In addition, the said 1st thru | or 3rd embodiment is for making an understanding of this invention easy, and is not for limiting and interpreting this invention. The present invention can be changed and improved without departing from the gist thereof, and the present invention includes equivalents thereof.

For example, the gap formed by the gap portion 21 may be such that the electric wire 5 is not detached from the tube portion 2 while the electric wire 5 is held.
Further, the interval between adjacent ring members 23 does not need to be the same for each pair of ring members 23 and may be different. One ring member 23 may be provided. The ring member 23 may be annular or substantially polygonal.

1 Electric wire protector 2 Pipe part 21 Crevice part

The main present invention for solving the above-mentioned problems is an electric wire protector that is mounted so as to cover an electric wire when performing a hot wire operation, and is a tube that can be expanded and contracted along the axial direction of the electric wire and is open at both ends. The tube portion has a gap portion formed along the axial direction of the tube portion so that the electric wire is inserted inside the tube portion and held inside the tube portion. Then, along the axial direction of the electric wire, the diameter in the direction orthogonal to the axial direction of the electric wire changes from the first diameter to the second diameter different from the first diameter, and then from the second diameter to the first diameter. It has a bellows shape that changes .

Claims (8)

An electric wire protector that is attached to cover an electric wire when performing live wire work,
It can be expanded and contracted along the axial direction of the electric wire, and includes a tube portion that opens at both ends.
The tube portion has a gap portion formed along the axial direction of the tube portion so that the electric wire is inserted inside the tube portion and held inside the tube portion. Electric wire protective equipment.   The tube portion extends from the second diameter after the diameter in the direction orthogonal to the axial direction of the electric wire changes from the first diameter to a second diameter different from the first diameter along the axial direction of the electric wire. The wire protector according to claim 1, wherein the wire protector has a bellows shape that changes to a first diameter. The tube portion is formed of a soft sheet member,
The annular member that is elastically biased in the direction of closing the gap is provided in a portion of the pipe portion that has a larger diameter between the first diameter and the second diameter. Wire protector. The tube portion includes a first tube portion having an inner diameter and an outer diameter in a direction orthogonal to the axial direction of the electric wire, and an inner diameter and an outer diameter in a direction orthogonal to the axial direction of the electric wire, respectively. Each of the second inner diameter and the second outer diameter of the second pipe portion longer than the first outer diameter,
The power supply protective device according to claim 1, wherein the first tube portion and the second tube portion are slidably coupled along an axial direction of the electric wire. Attached to the openings at both ends of the tube portion, the gap portion is opened when the electric wire is inserted inside the tube portion, and the gap portion is closed when the electric wire is held inside the tube portion. The wire protector according to claim 3, further comprising a pair of opening and closing members that sandwich the wire. At least one of the pair of opening and closing members has a pin that extends outside the pipe part toward an opening on the opposite side of the pipe part,
The tube portion has an insertion hole on the outside of the tube portion,
The wire protector according to claim 5, wherein the pair of opening and closing members open and close the gap portion in a state where the pin is inserted into the insertion hole. The wire protector according to claim 6, wherein the insertion hole is provided in the annular member. The wire protector according to any one of claims 1 to 7, wherein the tube portion is made of an insulating material.

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