Wiring protection member

Abstract

To provide a wiring protection member capable of easily avoiding a state in which cables to be isolated are close to each other, capable of setting an isolation space according to the amount of cables, and capable of more easily performing isolation work even after passing a wire, in the wiring protection member for preventing a cable outer skin from being damaged.SOLUTION: The wiring protection member 1 is attached to a wire passing hole penetrating a plate material, and includes an annular body part 10 formed so as to cover a hole edge of the part when attached to the hole part, a flexible band-like band part 30 provided on the annular body part 10 and having a plurality of engagement parts 31 arranged in a longitudinal direction at least on a tip side, and an engagement hole part formed on the annular body part 10 and having an engaged part capable of engaging with any one of the plurality of engagement parts 31 and capable of inserting the band part 30.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a wire protection member. [Background technology]

[0002] Conventionally, there has been known a wire protection member that is provided for a wire-passing hole formed in a beam or the like of a building, including a prefabricated house. This wire protection member is, for example, composed of a C-shaped member that is provided so as to cover the inside of the hole edge so that the outer sheath of the cable is not damaged by the hole edge of the wire-passing hole (for example, see FIG. 7 of Patent Document 1).

[0003] The wiring regulations stipulate that the high-voltage and low-voltage cables passing through the hole must not come into contact with each other, but it is difficult to prevent the two from coming into contact with each other using the above-mentioned wiring protection member.

[0004] Therefore, a wiring protection member has been proposed that separates the space within the hole into multiple sections (see Patent Document 2). This wiring protection member differs from the C-shaped wiring protection member described in Patent Document 1 in that it is equipped with a separator that separates the space within the hole into two sections. In this type of wiring protection member, one of the high-voltage cable and the low-voltage cable is inserted into one of the spaces separated by the separator, and the other of the high-voltage cable and the low-voltage cable is inserted into the other space, thereby preventing the two from coming into contact with each other. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 7-220547 [Patent Document 2] Japanese Patent Application Publication No. 11-150844 Summary of the Invention [Problem to be solved by the invention]

[0006] Fig. 9 is a perspective view showing how cables are inserted through a wiring protection member according to a first comparative example. As shown in Fig. 9, when the wiring protection member 101 described in Patent Document 2 is attached to the hole H in the correct orientation with the exposed portion of the hole edge HM facing upward, the high-voltage cable C1 and the low-voltage cable C2 are concentrated at the bottom and come into close proximity to each other. Therefore, although such a wiring protection member 101 can prevent contact between the cables C1 and C2 within the hole H, they are very likely to come into contact at a position some distance from the hole H, making it difficult to prevent contact outside the hole.

[0007] Therefore, the present inventors have been studying a wire protection member equipped with a separator band. Fig. 10 is a perspective view showing how cables C1 and C2 are inserted through a wire protection member according to a second comparative example. The wire protection member 102 shown in Fig. 10 has no restrictions on the installation direction. Furthermore, the separator band SB shown in Fig. 10 has a curved structure that convexly curves toward the inside of the hole. For example, by installing the separator band SB so that it is positioned above the hole H, the cables C1 and C2 are prevented from coming into close proximity within the hole H. This also makes it easier to prevent the cables C1 and C2 from contacting each other at a position some distance from the hole H.

[0008] However, because the space inside the separator band SB shown in Fig. 10 is a predetermined size, if there is a large amount of cable, it may be impossible to insert the cables C1 and C2 into the space inside the band, making it difficult to properly separate them. Furthermore, with the wire protection member 102 equipped with the separator band SB shown in Fig. 10, if you want to separate the cables C1 and C2 after they have been installed, you must first pull out either the high-voltage cable C1 or the low-voltage cable C2 and then install the cable again. Therefore, the separation process after installation is not easy.

[0009] The present invention has been made to solve such problems, and its purpose is to provide a wiring protection member that prevents damage to the cable outer sheath, makes it easier to avoid cables that need to be isolated from being in close proximity to each other, and allows for the setting of an isolation space according to the amount of cable, making it easier to perform isolation work even after the cable has been laid. [Means for solving the problem]

[0010] The wiring protection member of the present invention is a wiring protection member that is attached to a hole for passing wires through a plate material, and comprises: a circular body portion formed to cover the edge of the hole when attached to the hole portion; a flexible string-like band portion provided on the circular body portion and having a plurality of engaging portions lined up in the longitudinal direction at least on the tip side; and an engaging hole portion formed on the circular body portion and having an engaged portion that can engage with any one of the plurality of engaging portions, allowing the band portion to be inserted therethrough. [Effects of the Invention]

[0011] According to the present invention, a wiring protection member that aims to prevent damage to the cable outer sheath makes it easier to avoid cables that need to be isolated from coming into close proximity to each other, and it is possible to set an isolation space according to the amount of cable, making it easier to perform isolation work even after the cable has been laid. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 2 is a perspective view showing a wiring protection member according to the embodiment. [Figure 2] FIG. 2 is a front view showing the wiring protection member according to the embodiment. [Figure 3] FIG. 3 is a partially enlarged view of FIG. 2. [Figure 4] FIG. 2 is a perspective view showing a cross section of the wiring protection member according to the embodiment. [Figure 5] FIG. 2 is a front view showing a cross section of the wiring protection member according to the embodiment. [Figure 6] FIG. 6 is a partially enlarged view of FIG. 5. [Figure 7] FIG. 10 is a front view showing the engaged state of the band portion. [Figure 8] FIG. 10 is a perspective view showing a cross section of the band portion in an engaged state. [Figure 9] FIG. 10 is a perspective view showing a state in which a cable is inserted through a wiring protection member according to a first comparative example. [Figure 10] FIG. 10 is a perspective view showing a state in which a cable is inserted through a wiring protection member according to a second comparative example. DETAILED DESCRIPTION OF THE INVENTION

[0013] The present invention will be described below in accordance with preferred embodiments. Note that the present invention is not limited to the embodiments shown below and can be modified as appropriate without departing from the spirit of the present invention. In addition, in the embodiments shown below, some components are omitted from illustration and description, but it goes without saying that publicly known or well-known technologies are applied as appropriate to the details of the omitted technologies within the scope of the content described below.

[0014] FIG. 1 is a perspective view showing a wire protection member according to this embodiment, and FIG. 2 is a front view showing the wire protection member according to this embodiment. As shown in FIGS. 1 and 2, the wire protection member 1 is installed in a wire-passing hole H (see FIGS. 9 and 10) formed in a building, including a prefabricated house. In a building, wire-passing holes H are formed in beams or the like for electrical wiring, and cables C1, C2 (see FIGS. 9 and 10) are sometimes passed through these wire-passing holes H. The wire protection member 1 is installed along the hole edge HM (see FIG. 9), which corresponds to the edge of the hole H, so that the cables C1, C2 thus passed through are not damaged by the hole edge HM.

[0015] Such a wire protection member 1 includes a body portion 10, a plurality of claw portions 20, and a band portion 30.

[0016] The body 10 is an annular (cylindrical) member formed to cover the hole edge HM of the hole H when the wire protection member 1 is attached to the hole H. The body 10 is provided so as to cover the hole edge HM from the inside of the hole edge HM, and functions as a protective member that protects the cables C1, C2 inserted into the hole H from being damaged by the hole edge HM. The body 10 also has a circular plate 11 on the side opposite to the insertion direction of the wire protection member 1 into the hole H. The plate 11 functions as a rib that allows the wire protection member 1 to maintain its annular shape.

[0017] The multiple claws 20 are provided on the body 10 and serve as mounting portions for mounting the wire protection member 1 to the hole H. The multiple claws 20 are members that extend in the insertion direction from notches 12 formed in the body 10 and are flexible in the radial direction of the annular body 10. Four notches 12 are formed in the body 10 at 90° intervals. The multiple claws 20 are formed extending in the insertion direction from these notches 12 spaced at 90° intervals.

[0018] Each claw portion 20 has an inclined portion 21 and a locking portion 22. Each claw portion 20 has a gap portion 20a and is U-shaped when viewed from the front as shown in FIG. 2. In the U-shaped claw portion 20, the inclined portion 21 is a surface facing the outside of the annular body portion 10. This inclined portion 21 has an inclined structure that slopes from the outside to the inside of the circle. The locking portion 22 is a step located on the rear end side of the inclined portion 21 (opposite the insertion direction).

[0019] Since the wire protection member 1 has multiple claw portions 20, it is inserted into the hole H from the tip side (insertion direction side) of the claw portions 20. During insertion, the inclined portions 21 come into contact with the hole edge HM. The wire protection member 1 is inserted into the hole H while the multiple claw portions 20 bend due to contact with the hole edge HM. Then, when insertion of the wire protection member 1 is completed, the locking portions 22 catch on the hole edge HM to prevent it from coming out.

[0020] The band portion 30 is a flexible string-like member attached to the annular body portion 10. The band portion 30 is inserted into and engaged with an engagement hole portion 40 (see FIGS. 4 to 6) described below, and is arranged in an arc shape by the inner surface of the body portion 10 when not engaged with the engagement hole portion 40.

[0021] Fig. 3 is a partial enlarged view of Fig. 2. As shown in Fig. 3, the band portion 30 has a plurality of engagement portions 31 aligned in the longitudinal direction at least on the tip side 30a thereof. The plurality of engagement portions 31 are members that are sawtooth-shaped when viewed from the front, and each of the sawtooth functions as an engagement portion 31. Note that, in this embodiment, the band portion 30 has a plurality of engagement portions 31 only on the tip side 30a, but the engagement portions 31 may also be formed on the base side 30b (see Fig. 4) as well as on the tip side 30a.

[0022] Fig. 4 is a perspective view showing a cross section of the wire protection member 1 according to this embodiment, and Fig. 5 is a front view showing a cross section of the wire protection member 1 according to this embodiment. As shown in Fig. 4 and Fig. 5, the wire protection member 1 has an engagement hole portion 40. The engagement hole portion 40 is a portion formed in the annular body portion 10, and is formed with a through hole 41 through which the band portion 30 can be inserted.

[0023] Fig. 6 is a partial enlarged view of Fig. 5. As shown in Fig. 6, the engagement hole portion 40 has a lock arm (engaged portion) 42 inside a through hole 41. The lock arm 42 is capable of engaging with any one of the plurality of engagement portions 31 of the band portion 30. Like the claw portion 20, this lock arm 42 also has an inclined portion 42a and a stepped portion 42b.

[0024] The locking arm 42 is flexible in the direction of arrow A shown in FIG. 6. The band portion 30 is flexible and can be bent in the direction of arrow B (see FIG. 5). When the band portion 30 is inserted into the engagement hole portion 40, the sawtooth engaging portion 31 comes into contact with the inclined portion 42a. As a result, the band portion 30 bends the locking arm 42 in the direction of arrow A, and the sawtooth engaging portion 31 climbs over the inclined portion 42a. In this climbed-over state, the engaging portion 31 is caught on the step portion 42b and is prevented from coming off.

[0025] Furthermore, sawtooth engagement portions 31 are formed continuously in the longitudinal direction of the band portion 30. Therefore, any engagement portion 31 can be engaged with the lock arm 42, and the size of the space within the band portion 30 can be set as desired.

[0026] Fig. 7 is a front view showing the engaged state of the band portion 30, and Fig. 8 is a perspective view showing a cross section of the engaged state of the band portion 30. When a specific engaging portion 31 and the lock arm 42 are engaged, an internal space IA is formed by the band portion 30 and the body portion 10, as shown in Fig. 7. This internal space is isolated from the outside by the band portion 30, and it is possible to insert, for example, a high-voltage cable C1 and a low-voltage cable C2 (see Figs. 9 and 10) into the separate spaces.

[0027] Next, a method for installing the wire protection member 1 according to this embodiment will be described. First, an operator prepares the wire protection member 1 and inserts it into the hole H from the tip end side of the multiple claws 20. As a result, the wire protection member 1 is inserted while the inclined portions 21 of the multiple claws 20 come into contact with the hole edge HM and bend. Then, when the wire protection member 1 is inserted to a certain extent, the insertion is completed and the locking portion 22 is hooked onto the hole edge HM to prevent it from coming out.

[0028] Next, the worker folds back the band portion 30 and inserts the tip end 30a of the band portion 30 into the engagement hole 40. This causes one of the engagement portions 31 to engage with the lock arm 42, forming an internal space IA between the band portion 30 and the body portion 10, as shown in FIG.

[0029] Thereafter, the worker inserts, for example, one of the high-voltage cable C1 and the low-voltage cable C2 into the internal space IA, and the other of the high-voltage cable C1 and the low-voltage cable C2 outside the space. In particular, the wiring protection member 1 is not limited in its installation orientation, and by, for example, orienting the internal space IA upward, it is possible to prevent damage to the cable outer sheaths and also to prevent the cables C1 and C2 from being placed close to each other.

[0030] Here, the band part 30 has a plurality of engagement parts 31 arranged in the longitudinal direction. Therefore, the worker can engage the appropriate one of the plurality of engagement parts 31 with the lock arm 42 depending on the amount of cable to be inserted into the internal space IA. This makes it possible to set an isolated space according to the amount of cable.

[0031] Furthermore, if the worker wishes to place the high-voltage cable C1 and the low-voltage cable C2 in separate spaces after they have been inserted into one trunk portion 10, the worker first separates one of the high-voltage cable C1 and the low-voltage cable C2 within hole H. Then, while holding one of the separated cables C1 (C2), the worker inserts the separated cable C1 (C2) into engagement hole 40 so that band portion 30 is wrapped around the separated cable C1 (C2). This allows the worker to more easily perform the separation work without having to pull out the separated cables C1, C2 after the wiring has been completed.

[0032] In this manner, the wiring protection member 1 according to this embodiment includes an annular body portion 10 formed to cover the hole edge HM of the hole H, thereby preventing damage to the cable sheath. Furthermore, the wiring protection member 1 includes a string-like band portion 30 and an engagement hole portion 40 through which the band portion 30 can be inserted. By engaging the band portion 30 and the engagement hole portion 40 to form an internal space IA, the cables C1 and C2 to be isolated can be easily prevented from being in close proximity to each other. Furthermore, since the band portion 30 and the engagement hole portion 40 are engaged after wiring, the wiring protection member 1 eliminates the need to pull out some of the cables C1 and C2 after wiring, making it easier to isolate the cables after wiring. Furthermore, since the band portion 30 has multiple engagement portions 31 aligned along its length, the length of the band portion 30 in the engaged state can be set relatively freely, allowing the isolation space to be set according to the amount of cables. Therefore, in the wiring protection member 1, which aims to prevent damage to the cable outer sheath, it is possible to prevent the cables C1 and C2 to be isolated from being in close proximity to each other, and to set an isolation space according to the amount of cable, making it easier to perform isolation work even after the wiring has been installed.

[0033] Furthermore, since the band portion 30 is arranged along the inside of the body portion 10 when in a non-engaged state, the band portion 30 is less likely to get in the way when there is no need to isolate the space inside the hole with the band portion 30.

[0034] The engagement hole 40 is formed at a position where the tip side 30a of the band part 30 is folded back to the base side 30b. Therefore, when the band part 30, which is arranged along the inside of the body part 10, is engaged with the engagement hole 40, the band part 30 has a curved structure that convexly faces the inside of the hole H, making it possible to form a shape that makes it easy to insert the cables C1 and C2.

[0035] Although the present invention has been described above based on the embodiments, the present invention is not limited to the above embodiments, and modifications may be made without departing from the spirit of the present invention, and other techniques may be appropriately combined to the extent possible. Furthermore, publicly known or well-known techniques may be combined to the extent possible.

[0036] For example, in the above embodiment, the band portion 30 is inserted into the engagement hole portion 40, but this is not limited to this, and the wiring protection member 1 may be one in which only the high-voltage cable C1 or only the low-voltage cable C2 is inserted without the band portion 30 being inserted into the engagement hole portion 40. [Explanation of symbols]

[0037] 1: Wiring protection material 10: Torso 30: Band 30a: Tip side 30b: Root side 31: Multiple engagement portions 40: Engagement hole portion 42: Lock arm (engaged part) H: Hole HM: hole edge

Claims

1. A wiring protection member attached to a hole for passing wires through a plate material, a ring-shaped body portion formed to cover an edge of the hole portion when attached to the hole portion; a flexible string-like band portion provided on the annular trunk portion and having a plurality of engagement portions aligned in a longitudinal direction at least on a tip side thereof; an engagement hole formed in the annular body portion, the engagement hole having an engaged portion engageable with any one of the plurality of engagement portions and through which the band portion can be inserted; A wiring protection member comprising:

2. The band portion is disposed along the inside of the annular body portion when not engaged with the engagement hole portion. The wiring protection member according to claim 1 .

3. The engagement hole is formed at a position where the tip side of the band portion, which is disposed along the inside of the annular body portion, is folded back toward the base side. The wire protection member according to claim 2 .

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