JPS6120826Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an assembly connection fitting for an assembly-type cable rack, and is an improvement on the cable rack used to bundle and route cables inside and outside architectural structures such as buildings. An assembly type that enables assembly at the installation site, allowing installation even in narrow spaces, and is suitable for assembling cable racks for branching and bending, which are mainly used when branching cables. This invention relates to an assembly connection fitting for a cable rack.

Conventionally, most cable racks of this type have been manufactured, assembled, painted, plated, or otherwise treated at a factory before being shipped. At that time, apart from the generally used linear ones, the ones used especially for branching have a T-shaped or cross-shaped planar shape, so they are inevitably large, and the painting in the final process, The plating processing equipment has also become larger, storage space has also expanded, and there are various problems such as poor transportation efficiency. In particular, in order to connect the supporting child girder members in the conventional cable rack for branching and bending with the normal child girder members, as shown in FIG. A bolt or nut 40 is mounted on a supporting member 30 having a shape of a shape, and a supporting member 35 having a generally groove-shaped cross section is placed on the flange portion of the supporting member 35, and a through hole drilled in the corresponding portion thereof is inserted. I am now assembling it. Therefore, it is necessary to manufacture a special support member 30 having the above-mentioned cross-sectional structure each time, which has the disadvantage that it is not suitable for mass production. In addition, in the case of a wide cable rack, the strength of the parent girder member 20 is lower than that of the child girder member 3.
Since it is usually superior to that of 5,
The strength of the child beam member 35 is an important factor in determining the strength of the cable rack. However, if the number of child girder members 35 is increased in order to increase the strength of the entire cable rack, drilling of through holes in the support child girder members 30 will be required, which is troublesome and requires a lot of preparation. Although we tried to shorten the production period by drilling a damp hole, if the strength was insufficient,
In the end, it was difficult to expect to shorten the manufacturing period because the drilling work would have to be done again.

Therefore, this invention was devised in view of the above points, and was developed to be suitable for connecting supporting child girder members and child girder members in cable racks for branching or bending. This has succeeded in reducing production costs, transportation costs, increasing strength, and making it easier to handle at the installation site.

Hereinafter, an embodiment of this invention will be described with reference to the drawings.One embodiment has a generally groove-shaped cross section, in which storage leg pieces 3 are erected on both side edges of a horizontal placement piece 2 in a facing manner; Branch or bend cable rack LB,
A connector 1 having a fitting portion 5 into which a supporting child spar member 30 having a generally groove-shaped cross section for LC is fitted, and an end portion inside the supporting child spar member 30 and on the outside of the side wall of this supporting child spar member 30. They are respectively inserted into the sub-spar members 35 having a generally groove-shaped cross section which are placed in the connector 1 in abutment, and horizontal rotation within the respective sub-spar members 30 and 35 allows both ends to be inserted into the respective side walls. first and second nuts 8, 10 whose planes are substantially parallelogram-shaped and which are engaged with the side surfaces, and first and second nuts 8, 10 which are inserted through the horizontal mounting piece 2 from outside, respectively; The first and second connecting bolts 12 and 13 are screwed into the connecting bolt.

Therefore, as shown in the figure, the supporter girder member 30
The cross-sectional shape of each of the sub-spar members 35 and 35 is
They exhibit shapes such as 〓-shaped, 〓-shaped, and 〓-shaped, and those with the same shape and structure are usually used. As shown in the figure, the supporting girder members 30 are installed between the parent girder members 20 with their openings facing downward. 35 is combined, it is possible to correspond to that,
Further, it is convenient because there is no need to align the through holes for bolt insertion, and no special processing is required when adding the child beam member 35 after the connection and assembly.

In addition, the connector 1 is obtained by bending a rectangular sheet material with an appropriate thickness, and the length of the horizontal mounting piece 2 is larger than the width of the support girder member 30;
It is not smaller than the width of the child spar member 35, but has a length and width that are sufficient to allow the support child spar member 30 and the child spar member 35 to be placed and accommodated in a state where they intersect. It is.

The fitting portion 5 formed in the connector 1 has a width into which the side wall portion of the supporting member spar member 30 is fitted, and is arranged in a facing manner so that the supporting member spar member 30 having a downward opening can be tightly fitted therein. It is formed by cutting out a part of the upright leg storage piece 3 at four locations in total. At this time, it is preferable to improve the fitting stability of the supporter girder member 30 by erecting the standing leg abutment piece 4 that abuts the outer side wall of the supporter girder member 30 on the edge of the horizontal placement piece 2. Of course, if it is an upward opening supporter girder member 30,
Needless to say, the shape of the fitting portion 5 is formed by cutting out a part of the upright leg storage piece 3 at two locations in total by the width of the supporter girder member 30.

On the other hand, in the first and second nut tools 8 and 10, the supporting child spar member 30 and the child spar member 35 are
Regardless of the cross-sectional shape, whether it is a cross-sectional shape or a cross-sectional shape, it has a width that is not larger than the width of the opening, and is intended to be inserted directly through the opening. . Each nut tool 8, 10 itself has a groove-shaped cross section to ensure its own robustness, and both ends in the direction of the groove are cut obliquely so that the plane thereof has a substantially parallelogram shape. At this time, the nut tools 8 and 10 are horizontally rotated within the support child spar member 30 and child spar member 35 so that both edges of the nut tools 8 and 10 are
Its maximum length approximately matches the inner width of 30 and 35 so as to be locked to the inner surface of each side wall,
It is not smaller than that, and is slightly influenced by the rotation when the first and second connecting bolts 12 and 13 are screwed in, for example, rotation is allowed within a 1/4 turn width, but it collides with the inner surface of each side wall. Then, further rotation becomes impossible. Therefore, as shown,
Both ends of the nut tools 8 and 10 are cut diagonally so as to have a large opening relative to the direction of screw rotation.

Connecting tool 1 and first and second nut tools 8, 10
The first and second connecting bolts 12 and 13, which are screwed together, are inserted into at least two through-holes 6 and 7 drilled in the horizontal placement piece 2 of the connector 1, respectively, and The nuts 8 and 10 are adapted to be screwed into screw holes 9 and 11 formed at their inner depths, respectively. At this time, if the child spar member 35 to be assembled and coupled to the main spar member 20 has a downward opening facing toward the connector 1 as shown in FIG. Screwing into the second nut 10 is done by using the opening, and conversely, as shown in FIG. It is done.

In addition, 50 in the figure is used when assembling a T-shaped branch cable rack LB as shown in FIG. 2, or when assembling an L-shaped bent cable rack LC as shown in FIG. ,
This is an assembly connection fitting for connecting the child spar member 35 that cross-connects the parent spar member 20 and the child spar member 35, and its outline is as follows: A cross-sectional view of the lower part of the main spar member 20 for cable racks LB and LC is formed with a bend. U-shaped fitting recess 21
Horizontal contact piece 52 and vertical contact piece 53 that abut on the outside
The horizontal abutting piece 52 at the inner end of the lower horizontal wall 22 of the fitting recess 21 has a raised abutting ridge 54 that substantially matches the thickness of the lower horizontal wall 22. The connecting tool 51 is inserted into the sub-spar member 35 having a substantially groove-shaped cross section for the cable racks LB and LC whose ends are fitted into the fitting recesses 21, and horizontally rotates within the sub-spar member 35. Therefore, a nut 56 whose both ends are engaged with the inner surface of the side wall of the child beam member 35 and whose plane is substantially parallelogram-shaped, and a connecting bolt 58 which is inserted from the outside of the horizontal contact piece 52 and screwed into the nut 56. It consists in having the following.

This invention is constructed as described above, and when used, as shown in Figs. 2 and 5, it is installed between the main girder members 20 of the branch cable rack LB and the bent cable rack LC. A child spar member 35 whose one end is connected and fixed to the parent spar member 20 is arranged to intersect with the supporting child spar member 30 , while the supporting child spar member 30 is fitted into the fitting portion 5 . , and the connecting tool 1 is set from below so that the child beam member 35 is placed on the horizontal placement piece 2. Next, the first connecting bolt 12 is attached to the first nut 8 inserted into the support member 30, and the second nut 10 inserted into the support member 35 is attached. The second connecting bolts 13 are inserted and screwed in from the outside of the connecting tool 1, respectively. At this time, it is possible to arbitrarily select whether the opening of the child beam member 35 is directed upward or downward, and the child beam member 35 having the upper opening can be used for mounting and fixing the cable W using a known mounting fitting (not shown).

Therefore, the supporting child spar member 30 and the child spar member 35
This means that they can be assembled and connected extremely easily and reliably in a crossed state at the installation site, and
Since each member 20, 30, 35 can be brought in and assembled separately even in a narrow place, construction can be carried out without destroying the entrance even in a place where the entrance is narrow, such as an attic or a culvert.

In addition, painting and plating processing are performed on each member 20, 3.
0, 35, and each part 1, 8, and 10, there is no need for large equipment, and since it can be disassembled into the smallest modules during transportation, transportation costs can be greatly reduced, and each part 1,
8, 10, 12, and 13 are inexpensive because they can be mass-produced.
5 Each shape is the conventionally used 〓 shape, 〓
It may be in either the shape or the square shape, is inexpensive in terms of cost, and can shorten the manufacturing time. This is because the cross-sectional shape of the conventional support girder member 30 is square, so it is possible to eliminate the need to specially manufacture it. This is also because the connecting bolts 12 and 13 can be used in common.

Furthermore, it is not necessary to drill through holes for connecting and assembling the supporting child girder members 30, so there is no risk of weakening the strength thereof, and furthermore, the child girder members 35 can be assembled at arbitrary intervals. They can be combined, and even if the number of sub-girder members 35 is required to be increased when additional cables W are installed after construction, this can be quickly dealt with.

In addition, the fitting portion 5 formed on the connector 1 having a substantially groove-shaped cross section prevents looseness with the supporting member 30 fitted into the fitting portion 5, especially in the longitudinal direction of the connector 1. The end of the child spar member 35 placed in the connector 1 is brought into contact with the outside of the side wall of the support child spar member 30, and at the same time, the horizontal mounting piece in the connector 1 is By being narrowed by the standing leg storage pieces 3 erected facing each other on both side edges, the child spar member 35 is also prevented from wobbling.

Moreover, the first part inserted into the support member 30
The second nut tool 8 inserted into the child member 35
Each of the nut tools 10 has child member members 30, 35.
The first and second connecting bolts 1 each have a substantially parallelogram-shaped plane whose both ends are locked to the inner surface of each side wall by horizontal rotation inside each bolt.
2 and 13 are prevented from idling when screwed in, ensuring speedy screw fastening work.

As explained above, according to this invention, it is possible to carry in and install in narrow places, especially for branching,
It is extremely suitable for assembling and connecting supporting child spar members and child spar members in a bent cable rack, and
By making it possible to use the same shape and structure for these sub-girder members, we are able to further reduce manufacturing costs, and by being able to transport each member and each part disassembled into their minimum modules, transportation costs are reduced. In addition, it has a simple structure and is easy to handle at the installation site, which is extremely beneficial in practical terms.

[Brief explanation of the drawing]

Figures 1 to 5 show an embodiment of this invention; Figure 1 is an exploded perspective view, Figure 2 is a plan view of an example of an assembled cable rack, and Figure 3 is an example of the cable rack shown in Figure 2. Parts omitted - sectional view taken along the line, Fig. 4 is also partially omitted - sectional view taken along the line shown in Fig. 5
The figure is a plan view of another example of the assembled cable rack, and FIG. 6 is a perspective view of a conventional cable rack for branching. LB... Branch cable rack, LC... Bent cable rack, W... Cable, 1... Connector,
2... Horizontal placement piece, 3... Storage leg piece, 4... Standing leg contact piece, 5... Fitting part, 6, 7... Penetration hole, 8
...First nut, 9...Screw hole, 10...Second nut, 11...Screw hole, 12...First connection bolt, 13...Second connection bolt, 20...
...Main girder member, 21... Fitting recess, 22... Lower horizontal wall, 30... Support child girder member, 35... Child girder member,
36... Connection hole, 40... Bolt, nut, 50
. . . Assembly connection fitting for connecting child girder members, 51 . . . Connecting tool, 52 . . . Horizontal contact piece, 53 .
...Connection bolt.

Claims (1)

[Scope of utility model registration request] A housing having a generally groove-shaped cross section formed by standing storage stand pieces erected on both side edges of the horizontal placement piece in a facing manner, into which a support girder member having a generally groove-shaped cross section for a branched or bent cable rack is received. a connecting tool having a section, a supporting child spar member, and a child spar member having a generally groove-shaped cross section that is placed in the connecting tool with an end abutting the outer side wall of the supporting child spar member. first and second nuts whose planes are substantially parallelogram-shaped and which are inserted and whose ends are locked to the inner surface of the respective side walls by horizontal rotation within the respective child beam members; and from the outside of the horizontal mounting piece. An assembly connection fitting for an assembly type cable rack, comprising first and second connection bolts which are inserted through and screwed into the first and second nut fittings, respectively.