JPH069538Y2 - Support structure for floor ducts, etc. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention is a floor duct disposed below a floor and used for accommodating various power lines and signal lines, or a floor to which the floor duct is connected. The present invention relates to a support structure for a box.

(Prior Art) Recently, not only in office buildings but also in houses for general residences, the amount of power lines, signal lines, etc. used has tended to increase dramatically.

For this reason, floor ducts have come to be used so that wirings such as the power lines and the signal lines can be efficiently arranged and the wirings can be easily connected to desired wirings from a desired position on the floor. . The floor duct is arranged below the floor (floor surface), and the wiring is housed inside the floor duct.
A floor box is used to connect a plurality of floor ducts extending in various directions. This floor duct or floor box has been conventionally supported via a mounting bracket at a predetermined height position with respect to a support bolt extending above the foundation floor of the floor. More specifically, two nuts, an upper nut and a lower nut, are screwed onto one support bolt, and the mounting bracket is sandwiched between the two nuts.
As a result, the height position of the mounting bracket can be changed by changing the height position of the two upper and lower nuts, and the height position adjustment using these two nuts enables horizontal positioning of the floor duct or floor box. It was designed to ensure proper mounting and to adjust the vertical spacing to the floor to the desired one.

That is, the position of the mounting bracket is raised by first rotating the upper nut to displace it higher and then rotating the lower nut to displace it to the upper position. Conversely, lowering the position of the mounting bracket is accomplished by first rotating the lower nut to displace it to the lower position and then rotating the upper nut to displace it to the lower position. . And, especially in the case of office buildings, after this adjustment, the floor duct and floor box are buried with concrete together with nuts and support bolts, and the concrete is subjected to astile treatment, etc. It is common to compose a surface.

(Problems to be solved by the invention) However, in the case of the conventional support structure described above,
The two upper and lower nuts had to be rotated in order to adjust the height positions of the one mounting bracket, which was troublesome for the work. The work of rotating this nut is performed by using a rotating tool such as a wrench from the upper side of the mounting bracket, but especially the work of rotating the lower nut below the mounting bracket is performed by the mounting bracket. It was difficult.

Therefore, it is an object of the present invention to provide a support structure for a floor duct or the like, which facilitates the work of adjusting the height position of a mounting bracket mounted on a floor duct or a floor box.

(Means and Actions for Solving Problems) In order to achieve the above-mentioned object, the present invention has the following configuration. That is, in a support structure for supporting a floor duct disposed below the floor or a floor box to which the floor duct is connected, a support bolt extending vertically in the lower floor, and the support A support nut screwed to the bolt and a mounting bracket that is attached to the floor duct or floor box and is supported by the support bolt through the support nut are provided. A neck portion is formed, and a portion above the neck portion serves as a rotary tool engaging portion with which a rotary tool is engaged, and a portion below the neck portion serves as a holding portion. An engagement groove is formed which is open to the end surface and has a width larger than the outer diameter of the neck portion and smaller than the outer diameters of the rotary tool engagement portion and the holding portion.
The engaging groove is laterally fitted to the neck portion.

In the present invention having such a configuration, the mounting bracket is supported by the support bolt only by fitting the engaging groove of the mounting bracket to the neck portion of the support nut. The directional movement is regulated by the rotary tool engaging portion, and the downward movement is regulated by the holding portion.

Then, by engaging the rotary tool with the rotary tool engaging portion on the upper portion of the neck and rotating the support nut,
The support nut, i.e. the mounting bracket fitted to its neck, will be displaced upwards or downwards.

(Effect of the Invention) As described above, according to the present invention, the mounting bracket is supported with respect to the support bolt only by fitting the engaging groove of the mounting bracket to the neck portion of the support nut. You will be able to make it easier.

Further, in order to adjust the height position of the mounting bracket, it suffices to apply a rotational force only to the rotary tool engaging portion that is located above the mounting bracket and can easily approach,
The lower part of the mounting bracket, which obstructs the mounting bracket, does not require any special work for imparting this rotational force, so that the work of adjusting the height position is extremely facilitated.

Further, since the neck portion is formed on the support nut and the engaging groove is formed on the mounting bracket, the structure is simple and can be easily implemented.

(Embodiment) An embodiment of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, reference numeral 1 denotes a floor (floor surface), and the floor 1 is set at a position higher than a base floor 2 therebelow by a predetermined height.

A floor duct 3 is arranged below the floor 1, that is, between the floor 1 and the foundation floor 2. The floor duct 3 is supported by the foundation floor 2 at least during the construction. Therefore, the foundation floor 2
A plurality of (two in the embodiment) support bolts 4 are extended upward and fixedly installed in the. These support bolts 4 have
A support nut 5 described later is screwed into each of them. The floor duct 3 is supported by the support bolt 4 via the mounting bracket 6 and the support nut 5.

As is well known, the mounting bracket 6 is composed of a pair of upper and lower mounting bands 7 and 8 each made of a narrow metal plate, and a plurality of (two in the embodiment) coupling bolts coupling the both bands 7 and 8. 9 and. That is, the coupling bolt 9 rotatably inserted into the upper mounting band 8
Are screwed into the screw holes 7a formed in the lower mounting band 7, so that the floor duct 3 can be installed in a pair of upper and lower mounting bands 7.
It is sandwiched between 8 and 8. Then, in the lower mounting band 7, a concave portion 7b is formed in the center thereof so that the floor duct 3 is accommodated in the lateral direction in the drawing without rattling so that the floor duct 3 is not displaced leftward in the drawing. Has been done. The lower mounting band 7 may not have the recess 7b.

Note that such a mounting bracket 6 may be capable of supporting a plurality of floor ducts 3 in the left-right direction in the drawing. The support bolts 4 (support nuts 5) are provided together with the mounting bracket 6 at predetermined intervals in the longitudinal direction of the floor duct 3.

As shown in FIGS. 2 to 4, the support nut 5 has a neck portion 5a having a circular cross section with a small diameter at its axially intermediate portion. The upper portion of the neck portion 5a is the rotary tool engaging portion 5b, and the lower portion of the neck portion 5a is the holding portion 5c. The rotary tool engaging portion 5b is engaged with a rotary tool such as a spanner (not shown) such that the rotary tool cannot rotate relative to the rotary tool engaging portion 5b, and has an irregular shape such as a hexagon. Further, in the embodiment, the holding portion 5c has a hexagonal shape like the rotary tool engaging portion 5b, but the mounting bracket 6 (lower mounting band 7) described later is seated and drops downward. The shape thereof is not particularly limited as long as it can prevent the above. However, according to the embodiment, it can be easily obtained by cutting the neck portion 5a with respect to an existing slightly elongated nut. In addition, 5d in FIGS. 2-4 is a screw part with respect to the support bolt 4. As shown in FIG.

The mounting bracket 6 is engaged and supported by the left and right support nuts 5 at the left and right ends of the lower mounting band 7. That is, focusing on the left end side of the lower mounting band 7 in FIG. 1 (the same applies to the right end side), the engagement groove 7c is formed so as to open to the left end surface thereof. The width of the engagement groove 7c is formed to be slightly larger than the outer diameter of the neck portion 5a of the support nut 5, while being smaller than the rotation tool engagement portion 5b and the holding portion 5c of the support nut 5. ing. The thickness of at least the engaging groove 7c of the lower mounting band 7 is slightly smaller than the length of the neck portion 5a.

As shown in FIG. 4, the engaging groove 7c is provided in the support nut 5
Is fitted from the lateral direction to the neck portion 5a. Then, in this fitted state, the mounting bracket 6 is seated on the upper surface of the holding portion 5c of the support nut 5, and further downward displacement is restricted. The upward movement of the lower mounting band 7 is restricted by the rotary tool engaging portion 5b of the support nut 5. The work of fitting the engagement groove 7c into the neck portion 5a may be performed before the support nut 5 is screwed into the support bolt 4.

In the above-described configuration, before the floor 1 is actually laid, the rotary tool is engaged with the rotary tool engaging portion 5b of the support nut 5 to rotate the support nut 5, whereby the floor duct 3 of the floor duct 3 is rotated. The height positional relationship with respect to the floor 1 and horizontal adjustment are performed. Then, in a general house, the floor 1 is laid on the foundation floor 2 via an abutment (not shown). Further, in the case of a large building such as an office building, concrete is poured onto the foundation floor 2 to a position slightly lower than the floor 1. Then, after the concrete hardens, the floor 1 is laid on it. It should be noted that the height can be adjusted by using the nut 5 while the concrete is not sufficiently solidified after pouring.

FIG. 5 shows an example in the case of supporting a floor box 11 to which a plurality of floor ducts 3 are connected. The same components as those in the above-mentioned embodiment are designated by the same reference numerals, and the description thereof will be omitted.
In the present embodiment, the mounting bracket 6'is fixed to the lower surface of the floor box 11 by welding or another method. The engagement between the mounting bracket 6'and the support nut 5 is the same as the engagement between the lower mounting band 7 and the support nut 5 in the above embodiment. The floor box 11 has a wiring outlet 11a opened on the upper surface thereof. The outlet 11a is covered by a blind lid when not in use, and when the wiring is pulled out from the floor box 11, the wiring is slightly above the floor 1. The protruding connector is connected.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention. FIG. 2 is a view on arrow A in FIG. FIG. 3 is a sectional view taken along line III-III in FIG. FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3, in which the mounting bracket before fitting is shown by a solid line, and the mounting bracket after fitting is shown by a chain line. FIG. 5 is a sectional view showing another embodiment of the present invention. 1: Floor 2: Foundation floor 3: Floor duct 4: Support bolt 5: Support nut 5a: Neck part 5b: Rotating tool engagement part 5c: Holding part 6,6 ': Mounting bracket 7: Lower mounting band 7c: Engagement groove 11: Floor box

Claims (1)

[Scope of utility model registration request] 1. A support structure for supporting a floor duct disposed below a floor or a floor box to which the floor duct is connected, comprising: support bolts extending vertically below the floor. A support nut screwed to the support bolt, and a mounting bracket mounted on the floor duct or floor box and supported by the support bolt via the support nut, A neck portion having a small diameter is formed in the portion, a portion above the neck portion is a rotary tool engaging portion with which a rotary tool is engaged, and a portion below the neck portion is a holding portion, and the mounting bracket is Has an engaging groove formed in its end face and having a width larger than the outer diameter of the neck portion and smaller than the outer diameters of the rotary tool engaging portion and the holding portion. ,
A support structure for a floor duct or the like, wherein the engagement groove is laterally fitted to the neck portion.