JP3546269B2 - Child girder for receiving wiring and piping material - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sub-girder for a wiring / piping material receiver installed between parent girders in a wiring / piping material receiving device such as a cable rack for pulling in wiring such as a cable and a piping material. The present invention relates to a child girder for receiving a wiring and piping material, which reduces a pulling force when pulling in.
[0002]
[Prior art]
A technique disclosed in Japanese Utility Model Laid-Open No. 62-172210 is disclosed as a conventional child girder for this type of wiring and piping material receiver.
6 and 7, a wiring / piping material receiver 1 includes a parent girder 2 made of a plate material such as aluminum having a constant cross-sectional shape, a plurality of sub-girder 10 and a plurality of It is composed of an extension roller 11 and has a ladder shape as a whole. The sub girders 10 are provided at predetermined intervals in the length direction of the wiring / piping material receiver 1, and have a constant cross section made of aluminum or the like. Further, the extension roller 11 is disposed at an appropriate position between the sub-spar 10 and a roller shaft 12 spanned between the parent spars 2 and a disk rotatably mounted on the roller shaft 12. The roller shaft 12 is attached to the main girder 2 using attachment screws 8 on a lid 12a provided at an end thereof. W is a cable placed on the rotating roller 13.
[0003]
In this conventional wiring and piping material receiver 1, since the rotating roller 13 of the sub-spar 10 rotates about the roller shaft 12, the wiring or piping such as the cable W drawn into the rotating roller 13 during the wiring work is passed through. The pulling force for pulling the material is reduced, and the work can be performed easily. After the cable W has been pulled into the wiring / piping material receiver 1, the cable W is supported by the sub-spar 10. That is, the extension roller 11 functions to reduce the drawing force, and the sub-spar 10 functions to support the cable W after the drawing.
[0004]
[Problems to be solved by the invention]
By the way, in order to reduce the pulling force of the cable W, it is desirable that a large number of extension rollers 11 are provided between the sub-beams 10. However, arranging a large number of extension rollers 11 only for reducing the pulling force is wasteful as a member, resulting in a large economic burden. Therefore, it is conceivable to reduce the costs of the entire sub-beam 10 and the entire extension roller 11 by also using the extension roller 11 as the sub-spar 10 supporting the cable W.
[0005]
However, since the wiring / piping material receiver 1 is configured such that the roller shaft 12 inserted into the rotating roller 13 of the extension roller 11 is supported between the parent girders 2, the roller shaft 12 is Is formed of a small-diameter cylinder or a round bar in order to support. Therefore, when the extension roller 11 is used as the sub-girder 10, the mounting strength is low, so that the function as the sub-girder cannot be sufficiently exerted. The number of materials to be drawn in will be restricted.
[0006]
In view of the above, it is desired to provide a sub-girder that increases the mounting strength, reliably supports the cable W, and also functions as an extension roller that reduces the drawing force of the cable W.
[0007]
Accordingly, an object of the present invention is to provide a child girder for a wiring and piping material receiving member that can secure a required mounting strength and reduce the drawing force of the wiring and piping material.
[0008]
[Means for Solving the Problems]
Koketa for wiring and piping material bracket as according to the invention of claim 1 is extended between the parent digits of the wiring and piping material receiving fixture, a support that having a opening that communicates with the interior space at the top, the a plurality of rotary rollers arranged in the longitudinal direction to the support to reduce the attractive force of the wiring and piping material, together with being supported on said support, freely rotating the rotating roller above said support A plurality of holders for holding , wherein each of the holders has a base housed and supported in an internal space of the support, and a holder for holding the rotating roller is located above an opening of the support. It protrudes .
[0009]
According to a second aspect of the present invention, the base of the holder according to the first aspect projects upward from the opening by the flange provided at the upper opening of the support. Is prevented.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
In the figure, a wiring / piping material receiver 1 is composed of a main girder 2 made of a plate material such as aluminum having a constant cross-sectional shape, and a plurality of sub-girder 3 erected at predetermined intervals between the main girder 2. Have been. The sub-spar 3 has a plurality of cylindrical rotating rollers 5 arranged in a length direction on a support 4 formed in a substantially rectangular cylindrical shape having a constant cross-sectional shape and having a partially open upper surface. The cable W is drawn into the rotating roller 5 and is placed thereon.
[0011]
The support 4 is provided with screw mounting portions 4a on both side surfaces, has an internal space 4b, and has a plurality of holders 6 made of a plate material formed in a convex shape as a whole on a bottom surface at predetermined intervals. I have. The holder 6 has a base 6a housed in the internal space 4b of the support 4 and a holder 6b protruding upward from an upper surface opening of the support 4, and a through hole 6c is formed in the holder 6b. Is formed. The upper end of the base 6a of the holder 6 is prevented from jumping upward by the flanges 4c on both sides of the upper surface opening of the support 4. Each of the rotary rollers 5 is rotatably held via a shaft 7 made of a round bar or the like penetrating the shaft core, and is disposed between the holders 6 in the length direction. That is, since the shaft 7 is attached to the through hole 6c of the holding portion 6b of the holder 6 projecting upward from the upper surface of the support 4, the rotating roller 5 is held above the support 4. ing.
[0012]
Here, the support 4 has a constant cross-sectional shape and can be easily formed by extrusion of synthetic resin, aluminum, or the like. Although the support 4 is formed in a substantially rectangular cylindrical shape, the shape is not limited to this. For example, a support such as a support having a H-shaped cross section or a plate reinforced with ribs may be used. Any shape having strength can be used. Further, the screw mounting portion 4a can also be provided in the internal space 4b of the support 4.
The rotating roller 5 can be formed by using a synthetic resin or the like. However, when the rotating roller 5 is formed in a thin cylindrical shape, a lightweight metal such as aluminum can be used. Then, as shown in FIG. 3, a cavity 5b may be appropriately formed for weight reduction. In short, any material and shape may be used as long as the rotating roller 5 rotates smoothly, has a predetermined mounting strength with respect to the cable W, and is lightweight.
[0013]
With such a structure, the rotating roller 5 is held by sequentially inserting the holder 6 from the left and right opening surfaces of the support 4 and passing the shaft 7 through the rotating roller 5 and the holder 6.
[0014]
The sub-spar 3 configured as described above is mounted on a screw mounting portion 4 a formed on both side surfaces of the support 4, and a mounting screw 8 that penetrates the main girder 2 is screwed from the side. Attached to
[0015]
Next, the operation of the child girder of the present embodiment configured as described above will be described.
When the cable W is pulled into the wiring / piping material receiver 1, the rotating roller 5 of the sub-spar 3 rotates while being held by the holder 6, so that the sliding resistance between the cable W and the sub-spar 3 is small. And the retraction force is reduced. Here, the rotating roller 5 is held by a plurality of holders 6 and a shaft 7, and the holder 6 is supported by a support 4. Therefore, the load of the cable W applied to the rotating roller 5 is applied to the shaft 7, and the load applied to the shaft 7 is supported by being shared by the plurality of holders 6, and finally by the support 4. Supported. For this reason, in the conventional example, since the roller shaft 12 for rotating the rotating roller 13 is supported only at both ends, the roller shaft 12 made of a member such as a small-diameter cylinder or a round bar having a small mounting strength is used. In this embodiment, an excessive load is applied to the supporting member 6 and the supporting member 4 is supported by the plurality of holding members 6 and the supporting member 4 formed in a substantially rectangular cylindrical shape or the like and having a large mounting strength. Since the shape of the body 4 can be arbitrarily set and the strength can be increased as appropriate, the mounting strength of the whole child girder 3 is extremely large.
[0016]
From the above, according to the child girder for the wiring and piping material receiver of the present embodiment, the child girder 3 supports the cable W and reduces the drawing force. It is possible to reduce the pull-in force of the cable W with a small number of attachments without providing a large number, and thus it is possible to reduce the cost of the wiring and piping material receiver 1. Further, since the rotating roller 5 is held above the support 4, the cable W can be reliably brought into contact with the rotating roller 5 and placed.
[0017]
Next, another embodiment of the present invention is shown in FIG.
In the figure, a holder 6 made of a plurality of plate members is inserted into a support 4 from a side opening, and is placed on the bottom surface of the support 4 at a predetermined interval. A cylindrical shaft portion 6d protruding outward is integrally provided at the center of both sides of the holding body 6. On the other hand, the rotary roller 5 has a columnar shape, and a shaft hole 5a rotatably engaged with the shaft portion 6d of the holder 6 is formed in the center of both side surfaces. Is formed. Therefore, the rotating roller 5 is pivotally supported by the shaft portion 6d of the holding body 6 and can rotate smoothly.
The child girder of this embodiment can also expect the same operation and effect as the embodiment having the shaft member 7 described above, and in particular, can eliminate the need for the shaft member 7.
[0018]
In this embodiment, a cylindrical shaft portion 6d is integrally provided at the center of both sides of the holding body 6, and the shaft 6d of the holding body 6 is rotatably engaged with the center of both sides of the rotating roller 5. Although the shaft hole 5a is formed, the shaft hole may be provided on the holding body 6 side, and the shaft portion protruding to both outer sides may be provided on the rotating roller 5 side to pivotally support the rotating roller 5. Good.
[0019]
Further, in each of the above embodiments, the holding body 6 is provided upright between the respective rotating rollers 5. However, for example, as shown in FIG. The holding member 6 can be provided at an arbitrary position between the rotating member 5 and the holding member 6 as long as the mounting strength of the whole child beam 3 is obtained.
[0020]
In the present invention, the “upward” of the “hold rotatably above the support” described in the claims refers to a horizontal line H passing through the rotation center C of the rotation roller 5 as shown in FIG. The case where the rotating roller 5 is higher than the upper surface of the supporting member 4, that is, the case where the upper half of the rotating roller 5 is in a positional relationship protruding upward from the supporting member 4. Means all the positional relationships held.
[0021]
By the way, when implementing the present invention, it is not necessary that all the rotating rollers 5 have the same length, and the length of each rotating roller 5 differs depending on the state of the cable W being pulled in or the like. You may.
[0022]
Further, in each of the above embodiments, the sub-spars constituting the wiring / piping material receiver 1 are all constituted by the sub-spars 3 provided with the rotating rollers 5 according to the present embodiment. A part or a considerable number thereof may be replaced with a normal child girder without the rotating roller 5, and both may be used in combination.
[0023]
Further, in each of the above embodiments, the holding member 6 for holding the rotating roller 5 is inserted from the left and right opening surfaces of the support member 4 and attached to the inside of the support member 4, but is not limited thereto. For example, it may be inserted into the upper surface opening from above the support 4 and fitted into the support 4.
[0024]
In addition, in each of the above embodiments, the case where the cable W is drawn in is shown. However, the present invention is not limited to this, and the present invention is similarly applied to the case where other wiring and piping materials are drawn. You.
[0025]
【The invention's effect】
As described above, Koketa for wiring and piping material receiving fixture of the present invention is extended between the parent digits of the wiring and piping material receiving fixture, a plurality in the support that having a opening that communicates with the interior space at the top supporting the holding member of the state, and are a plurality of rotary rollers in the holder as was held rotatably above the said support and each holding body, into the interior space of the base portion is the support while being supported by being accommodated, Ru der those holding portion protruding upward from the opening of the support that holds the rotary roller. Therefore, the placement strength of the sub-spar is higher than that of the conventional wire drawing roller. As a result, with a small number of attachments, it is possible to reduce the drawing force of the wiring and piping material, and thus reduce the cost of the wiring and piping material receiving device. In addition, since the rotating roller is held above the support, the wiring and piping material can be reliably brought into contact with the rotating roller and placed. Then, since each base is accommodated in the internal space of the support, a plurality of the supports are supported by the support with a simple structure, and the plurality of rotating rollers are supported by the support. It can be held rotatably above the body.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a child girder for receiving a wiring and piping material according to an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view of FIG.
FIG. 3 is a longitudinal sectional view showing a child girder for receiving a wiring and piping material according to another embodiment of the present invention.
FIG. 4 is a longitudinal sectional view showing a child girder for receiving a wiring and piping material according to still another embodiment of the present invention.
FIG. 5 is a side view showing a mounting position of a rotating roller in the embodiment of the present invention.
FIG. 6 is a perspective view showing a conventional wiring and piping material receiver.
FIG. 7 is a front view of a main part showing a drawing roller of FIG. 6;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Wiring and piping material receiver 2 Main girder 3 Child girder 4 Support 4b Internal space 5 Rotary roller 6 Holder 6a Base 6b Holder 7 Shaft

Claims (2)

Bridges the parent digits of the wiring and piping material receiving fixture, a support that having a opening that communicates with the interior space at the top,
A plurality of rotating rollers disposed on the support, to reduce the drawing force of the wiring and piping material,
A plurality of holders supported by the supporter and rotatably holding the rotating roller above the supporter ,
Each of the holders has a base accommodated and supported in an internal space of the support, and a holder for holding the rotary roller protrudes above an opening of the support. Child girder for piping material receiver. The support is provided with a flange at an upper opening,
The child girder for a wiring and piping material receiving device according to claim 1, wherein the holding body is prevented by a flange of the supporting body from projecting a base portion upward from an opening of the supporting body. .

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