JPS5852818Y2 - Assembly connection fittings for assembly type cable racks - 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 when cables are bundled and routed inside and outside of architectural structures such as buildings. It is possible to assemble it at the installation site, making it possible to install it even in cramped spaces, and it is suitable for assembling cable racks mainly used for branching cables and also for bending cables. This invention relates to an assembly connection fitting for an assembly type cable rack.

Traditionally, many of these types of cable racks were manufactured in factories.
It is shipped after being assembled and painted or treated with wood.

In this case, apart from the generally used linear ones, those used especially for branching have a T-shaped planar shape,
Because it is cross-shaped, it is inevitably large, and the painting and plating equipment involved in the final process is also large, the storage space for the case is also expanded, and there are various problems such as poor transportation efficiency. There is.

Therefore, this invention was devised in view of the above points, and is mainly suitable for connecting the main girder member and child girder member in a cable rack for branching, and is also suitable for connecting the main girder member and child girder member in a cable rack for branching. The present invention has been developed to be suitable for assembling and connecting cable racks, and an embodiment of this invention will be described below with reference to the drawings.

That is, in one embodiment, a fitting recess 1 having a substantially U-shaped cross section is bent and formed at the lower part of a main beam member 10 for a cable rack L.
1. The horizontal abutting piece 2 is a horizontal abutting piece that abuts on the outside, and the vertical abutting piece 3 has a cross-shaped front face. 12 A connecting tool 1 having a raised abutting ridge 4 that substantially matches the wall thickness, and a sub-girder member 20 having a substantially groove-shaped cross section for a cable rack L whose end portion is fitted and coupled into the fitting recess 11. A nut tool 6 having a substantially parallelogram-shaped plane whose both ends are locked to the inner surface of the side wall of the child spar member 20 by horizontal rotation inside the child spar member 20; The connecting bolt 8 is screwed into the nut fitting 6.

As shown in the figure, the connector 1 is obtained by bending a rectangular plate material with an appropriate thickness, and the length of the horizontal contact piece 2 is determined by the length of the lower horizontal wall of the fitting recess 11. The length of the vertical abutting piece 3 is longer than the length of the vertical abutting piece 12, and the length of the vertical abutting piece 3 is sufficient to firmly abut the outer surface of the back wall 13 of the fitting recess 11. It may also be bent into an L-shape so as to reach the outside.

The abutment ridge 4 provided on the horizontal abutment piece 2 is as shown in the figure.
The water contact piece 2 itself is not limited to being formed by curving it into an arcuate cross-section, but may also be formed by bending it into a V-shape cross-section, cutting a part of it, or protruding it. In this case, it is sufficient that the sub-girder member 20 fitted into the fitting recess 11 is brought into firm contact with the inner surface of the lower horizontal wall 12 without being tilted.

In the past, the nut tool 6 was designed to be larger than the opening width of the child girder member 20, regardless of whether the cross section was concave, concave, or concave. It has a narrow width and is inserted directly through the opening.

The nut tool 6 itself has a groove-shaped cross section in order to improve its 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 tool 6 has a maximum length that approximately matches the internal width of the child spar member 20 so that both ends thereof are locked to the inner surface of the side wall of the child spar member 20 by horizontal rotation within the child spar member 20. When the connecting bolt 8 is screwed in, the rotation is slightly dependent, for example, rotation within the V4 rotation width is allowed, but if it collides with the inner surface of the side wall of the child beam member 20, further rotation is not possible. make it impossible.

Therefore, as shown in the figure, both ends of the nut tool 6 are cut diagonally so as to have a large opening with respect to the screwing direction of rotation.

A connecting bolt 8 for screwing together the connecting tool 1 and the nut tool 6 is inserted into a through hole 5 drilled in the water contact piece 2 of the connecting tool 1.
and is screwed into a screw hole 7 formed at the bottom of the nut 6.

At this time, the child spar member 20 assembled and coupled to the parent spar member 10
However, as shown in FIG. 3, if the opening is a downward opening facing toward the side of the coupling 1, the coupling bolt 8 is screwed into the nut 6 using the opening; As shown in the figure, in the case of an upward opening, a connecting hole 21 bored in the inner wall of the child beam member 20 is used.

In addition, as shown in FIG. 2, 30 in the figure is a child spar member connection branch that orthogonally connects the child spar member 25 and child spar member 20 when the T-shaped cable rack L for branching is assembled. This is an assembly connection fitting for a cable rack L, which has a roughly grooved cross section with storage stand pieces 33 erected on both side edges of a horizontal mounting piece 32 in a facing manner, and has a cross section for a branched or curved cable rack L. Fitting portion 3 into which the substantially groove-shaped support girder member 25 is fitted
5, and a sub-girder having a generally groove-shaped cross section, which is placed within the supporting child spar member 25 and within the connecting device 31 with its end abutting against the outside of the side wall of the supporting child spar member 25. Member 20
The child beam members 25, 20 are respectively inserted into the
First and second nuts 38 and 40, each having a substantially parallelogram-shaped plane, whose both ends are locked to the inner surface of each side wall by horizontal rotation within the horizontal mounting piece 32, and a second nut 38, 40 which is inserted from the outside of the horizontal mounting piece 32. The first and second connecting bolts 42 and 43 are screwed into the first and second nut fittings 38 and 40, respectively.

This device is constructed as described above, and when in use, as shown in FIG. While placing the child spar member 20, the connecting tool 1 is set from the outside of the fitting recess 11, and the connecting bolt 8 is inserted from the outside of the connecting device 1 into the nut 6 inserted into the child spar member 20. It is something that is screwed in.

At this time, it is possible to arbitrarily select whether the opening of the child spar member 20 is directed upward or downward;
can be used for mounting and fixing the cable W using a known mounting bracket (not shown).

In addition, as shown in FIG. 5, in an L-shaped cable rack for guiding the cable W when bending, the child girder members 20 are arranged between the parent girder members 10 which are curved in a planar arc shape, thereby forming a planar L-shaped cable rack. Assemble to.

Furthermore, as shown in FIG. 2, in a T-shaped or cross-shaped (not shown) cable rack for branching and guiding the cable W, this devised metal fitting is used between the parent girder member 10 and the child girder member 20. By using the branching assembly connecting fittings 30 between the supporter girder member 25 and the childer girder member 20, they can be assembled into a T-shape or a cross-shape in plan view.

Therefore, the master girder member 10 and the child girder member 20 can be assembled and connected extremely easily and reliably in a crossed state at the installation site, and each member 10 and 20 can be carried in separately even in a narrow space. Since it can be assembled in a single frame, it can be installed without destroying the entrance even if the entrance is narrow, such as in an attic or in a culvert.

In addition, painting and plating treatments are performed on each member 10, 20 and each part 1.
. , 6. This eliminates the need for large-scale equipment. Even when transporting, it can be disassembled into the smallest modular pieces, which greatly reduces transportation costs. Each part 1, 6.8 can be mass-produced. It is possible, it is cheap, and
The shape of the child beam member 20 is the conventionally used concave shape, L shape,
It may be any square shape, and it is inexpensive in terms of cost, and it is also possible to shorten the manufacturing time.

Furthermore, it is not necessary to drill through holes for connecting and assembling the parent girder member 10, so there is no risk of weakening the strength thereof, and furthermore, the child girder members 20 can be assembled and connected at arbitrary intervals. Therefore, even if an increase in the number of sub-girder members 20 is required in the case of adding cables W after construction, this can be quickly dealt with.

In addition, by fitting and coupling the end portion of the sub-spar member 20 having a substantially groove-shaped cross section into the fitting recess 11 having a substantially U-shaped cross section bent and formed at the lower part of the main girder member 10, the main girder member 10 Prevents the movement of the child spar member 20 in the vertical direction, and also screws together the connecting tool 1 that abuts the outside of the fitting recess 11 and the nut tool 6 inserted into the child spar member 20 with the connecting bolt 8. Since it is stopped, it is extremely stable during assembly.

In addition, since the connector 1 has an L-shape when viewed from the front from the horizontal contact piece 2 and the vertical contact piece 3 that abut against the outside of the fitting recess 11, the contact state becomes solid and at the same time ,
The horizontal contact piece 2 at the inner position of the end of the lower horizontal wall 12 of the fitting recess 11 is provided with a raised contact ridge 4 that substantially matches the thickness of the lower horizontal wall 12, so that the fitting recess 11 The horizontally fitted state of the child spar member 20 fitted into the position 11 is maintained, and therefore the child spar member 2
This prevents wobbling and tilting of the wire and increases bonding stability.

The nut tool 6 inserted into the child spar member 20 is inserted into the child spar member 2
Since the flat surface of which both ends are locked to the inner surface of the child girder member 20 by horizontal rotation within 0 is a parallelogram-resistant shape, idling when the connecting bolt 8 is screwed in is prevented, and the screw tightening work can be performed quickly. ensure that

As explained above, according to this invention, it is possible to carry it in and lay it in a narrow place, and it is extremely suitable for assembling and connecting the main girder members and child girder members with each other in a cable rack for branching. In addition to reducing transportation costs and offering a low price, it also has a simple structure and is easy to handle at the installation site, which is extremely beneficial in practical terms.

[Brief explanation of drawings]

The drawings show one embodiment of this invention; Fig. 1 is an exploded perspective view, Fig. 2 is a plan view of an example of an assembled cable rack, and Fig. 3 is partially omitted from Fig. 2. 4 is a sectional view taken along the IV-rV line, with a portion omitted, and FIG. 5 is a plan view of the other side of the assembled cable rack. L...Cable rack, W...Cable, 1...
Connector, 2... Horizontal abutting piece, 3... Vertical abutting piece, 4
...Abutting ridge, 5...Through hole, 6...Nut tool,
7... Screw hole, 8... Connection bolt, 10... Main girder member, 11... Fitting recess, 12... Lower horizontal wall, 13
... Back side wall, 14... Upper horizontal wall, 20... Child spar member, 21... Connecting hole, 25... Support child spar member, 30
... Assembly connector for branching, 31... Connector, 32.
...Horizontal placement piece, 33...Storage stand piece, 35...Accommodating part, 38...First nut tool, 40...Second nut tool, 42...First nut tool Connection bolt, 43...2nd
connection bolt.

Claims (1)

[Scope of utility model registration request] A fitting recess with a roughly U-shaped cross section is bent at the bottom of the main girder member for cable racks.The front side is cross-shaped and consists of a horizontal abutting piece and a vertical abutting piece that abut on the outside. A connector for a cable rack in which the horizontal contact piece at the inner end position is provided with a contact ridge that substantially matches the thickness of the lower horizontal wall; a nut having a substantially parallelogram-shaped plane, which is inserted into a child spar member having a generally groove-shaped cross section, and whose both ends are engaged with the inner surface of the side wall of the child spar member by horizontal rotation within the child spar member; and an outer side of the horizontal contact piece. An assembly connection fitting for an assembly type cable rack, comprising a connection bolt that is inserted through and screwed into a nut fitting.