JP4318103B2 - Support bracket for cable rack and support material expansion - Google Patents

Description

  The present invention relates to a cable rack and a support material expansion support bracket that are suitable for newly adding a cable rack or the like when an additional power cable is required due to, for example, renovation work in an apartment or factory.

  In recent years, communication devices have become widespread due to the development of information technology, and the number of low-current wires such as communication cables is increasing. In addition, with the increase in hospital medical facilities and production facilities such as factories, it is necessary to increase the number of power cables. For this reason, there is an increasing number of renovation works that newly add cable racks and the like.

  The following support brackets are mainly used when adding cable racks in conventional construction. The first is an intermediate support bracket used for construction of an additional cable rack on top of an existing cable rack. This intermediate support bracket is attached to the upper side surface of a suspension bolt that suspends an existing cable rack. A support material is installed on the intermediate support bracket, and the cable rack is placed and fixed on the support material. Is.

  Secondly, high nuts and window nuts that are used when additional cable racks are added under existing cable racks. These nuts are used when the existing suspension bolts penetrate the support material on which the existing cable rack is placed. At the lower end of the suspension bolt that penetrates the support material, there is a high nut or window. Cable nuts and support materials are added by screwing nuts and screwing additional suspension bolts to these nuts.

  Thirdly, an anchor bolt that is used when a cable rack is further added under an existing cable rack and the existing suspension bolt does not penetrate the support material. This anchor bolt is used when the high nut or the nut with window cannot be screwed to the lower end of the existing suspension bolt. Then, a cable rack or the like will be added. In actual expansion work, this anchor bolt is most frequently used.

On the other hand, as shown in Patent Document 1, the present applicant has previously proposed a hanging bracket for directly hanging a cable rack. This suspension fitting is configured to directly support the cable rack with suspension bolts without using a support material.
Japanese Utility Model Publication 2-46192

  Extension work using conventional support brackets has the following inconveniences. That is, in the expansion work using high nuts, the insertion state of the suspension bolts screwed into these nuts cannot be confirmed, so there is a problem in safety confirmation. In addition, when high nuts or nuts with windows are used, the load on the added cable rack, etc., is all fixed only by screwing into the high nuts or nuts with windows. There are also inconveniences such as an increase in Furthermore, even if the suspension bolt penetrates below the support material, the lower end portion of the existing suspension bolt is a portion where water droplets or the like are most easily attached, so that rust and the like are frequently generated. Therefore, there are many cases where high nuts and window nuts cannot be mounted due to this rust or the like.

  In addition, in the case of expansion work using anchor bolts, it is necessary to fix new anchor bolts on the ceiling slab. For this reason, many operations such as positioning of the anchor bolt, drilling operation, or driving operation of the anchor bolt are required, and a very long work time is required. In addition, with these operations, it takes time to prepare tools such as electric drills and hammers, and it has been a construction that requires a great deal of time to add a cable rack.

  On the other hand, in the hanging metal fitting of Patent Document 1, it is possible to connect the high nut and the window nut to the lower end of the suspension bolt that directly suspends the cable rack. The point cannot be eliminated.

  Therefore, the present invention was created to solve the above problems, and when adding a new cable rack below the existing cable rack, even if the suspension bolt does not penetrate below the support material, The purpose is to provide a cable rack and support material expansion support brackets that can add cable racks and support materials quickly and easily even when suspension bolts use support brackets that directly suspend the cable rack. It is.

In order to achieve the above object, the first means in the present invention is to attach the cable rack P or the support material Q on which the cable rack P is placed and fixed to the suspension bolt R, and the suspension bolt R. An extension support bracket for connecting and supporting an extension suspension bolt R1 below the sandwiching fixing member 10 provided with a pair of clamp brackets 12 for clamping and fixing the side surface of the existing suspension bolt R; The connecting support member 20 is extended from the pinching fixing member 10 below the suspension bolt R and connects and supports the additional suspension bolt R1. The connection support member 20 sandwiches the existing suspension bolt R. A connecting fitting 21 is formed extending below the fitting 12 so as not to hit the end of the support member Q or the support fitting S1 for directly attaching the cable rack P, and an extension is provided at the lower end of the connecting fitting 21. Hanging bol An insertion hole 22 for inserting the R1 and perforated in, fixes the hanger bolts R1 for expansion to the connecting support member 20 by a fixing nut 23 disposed above and below the insertion hole 22, is supported by the connecting support member 20 The purpose is to attach the extension cable rack P1 or the extension support material Q1 to the extension bolt R1.

Is the clamping fixing member 10 of the second means, the side surface substantially U-shaped locking bracket 11 for locking the threads of one side of the existing hanger bolts R, provided at the upper end of the connecting support member 20 And a pair of clamping fittings 12 that clamp the suspension bolt R from both side surfaces of the suspension bolt R. These clamping clamps 12 clamp the side surfaces of the suspension bolt R together with the locking fitting 11. It fixes with the fixing volt | bolt 13 which penetrates the fitting 12 and the latching metal 11. FIG.

  The clamping member 12 of the third means includes a locking portion 12A that overlaps with the locking bracket 11 of the suspension bolt R, and a contact portion 12B that faces the locking portion 12A. The fixing bolt 13 inserted into the contact portion 12B from the side is provided so as to be tightened on the contact portion 12B side.

  The connection support member 20 of the fourth means is formed to extend below the clamping fitting 12 that clamps the suspension bolt R, and the end of the support material Q or the support fitting S1 for directly attaching the cable rack P is hit. The connection metal 21 having a substantially looped side surface that is avoided so as to be avoided is formed, the insertion hole 22 for inserting the additional suspension bolt R1 is opened at the lower end of the connection metal 21, and the connection hole 21 is arranged above and below the insertion hole 22. The additional suspension bolt R <b> 1 is fixed to the connection support member 20 with the fixed nut 23.

  The connection support member 20 of the fifth means is formed to extend downward from the sandwiching metal fitting 12 and avoids contact with the end of the support member Q or the support fitting S1 for directly attaching the cable rack P. The formation of the L-shaped connection fitting 21 is a means for solving the problem.

According to the first aspect of the present invention, the clamping and fixing member 10 that clamps and fixes the side surface of the suspension bolt R, and extends from the clamping and fixing member 10 to the lower side of the lower end of the suspension bolt R, is suspended for expansion. By providing the connection support member 20 for connecting and supporting the bolt R1, a cable rack and support materials can be added quickly and easily. Further, the connection support member 20 is extended below the clamping fitting 12 that clamps the existing suspension bolt R so that the end of the support member Q or the support fitting S1 for directly attaching the cable rack P does not hit. The connecting fitting 21 is formed, an insertion hole 22 for inserting the additional suspension bolt R1 is opened at the lower end of the connecting fitting 21, and the additional suspension is provided by the fixing nuts 23 arranged above and below the insertion hole 22. The bolt R1 is fixed to the connection support member 20, and the additional cable rack P1 or the additional support material Q1 is attached to the additional suspension bolt R1 supported by the connection support member 20, thereby supporting the support material Q. Regardless of the presence or absence of the support bracket S for direct suspension, the cable rack and the support material can be added quickly and easily. In addition, since the additional cable rack P1 and the support material Q1 are supported by the suspension bolts R via the connection support member 20 and the clamping and fixing member 10, the support material Q is supported to support the cable rack P. Even when it is used, it is not necessary to consider the existing weight of the support material Q, and the labor of strength calculation can be saved .

  According to the second and third aspects, the fixing that penetrates the side-side substantially U-shaped locking metal fitting 11 that engages with the thread on one side of the suspension bolt R and the pair of clamping metal fittings 12 that sandwich the suspension bolt R. The clamping and fixing member 10 fixed with the bolt 13 fixes the clamping even when the existing suspension bolt does not penetrate below the support material or when the bottom end of the suspension bolt is rusted. The member 10 can be fixed quickly and easily.

  In claim 4, since the connection support member 20 is formed with the connection metal member 21 having a substantially side loop shape to avoid the end of the support material Q or the support metal attachment S1 for directly attaching the cable rack P from being hit, Regardless of the presence of the material Q or the support bracket S for direct suspension, the cable rack and the support material can be added quickly and easily. Moreover, since the additional cable rack P1 and the support material Q1 are supported by the suspension bolts R via the connection support member 20 and the clamping and fixing member 10, the support material Q is supported by the cable rack P. Even when it is used, it is not necessary to consider the existing weight of the support material Q, and the labor of strength calculation can be saved.

  According to claim 5, by using the connection support member 20 having a substantially L-shaped side surface that avoids the end of the support material Q or the support bracket S1 for directly attaching the cable rack P, the existing support is used. Expansion work can be done while avoiding material Q in all directions. As a result, for example, construction can be performed at a location where the wall surface and the end of the support material Q are in close contact. Further, even if a plurality of steady-state metal fittings T are mounted on the support material Q, it is possible to increase the number of the steady-state metal fittings T while avoiding these steady-state metal fittings T by the connecting support member 20 having a substantially L-shaped side surface. It is.

  Thus, according to the present invention, when a new cable rack is added below the existing cable rack, even if the suspension bolt does not penetrate below the support material, or the suspension bolt directly suspends the cable rack. Even when the support metal fitting is used, there are various effects such that a cable rack and support materials can be added quickly and easily.

  The best mode of the support device of the present invention is provided with a clamping and fixing member 10 that clamps and fixes the side surface of the suspension bolt R. The clamping and fixing member 10 is composed of a locking metal fitting 11 having a substantially U-shaped side surface and a pair of clamping metal fittings 12 that clamp the suspension bolt R from both side surfaces of the suspension bolt R. The side surface of the suspension bolt R is clamped together with the locking bracket 11 with the clamp bracket 12 and fixed with the fixing bolt 13. On the other hand, the connection support member 20 extended from the clamping fixing member 10 below the lower end part of the suspension bolt R is provided. The extension cable rack P1 or the extension support material Q1 is attached to the extension bolt R1 suspended from the connection support member 20. By providing the connection support member 20 with a connection bracket 21 having a substantially loop shape on the side surface so as not to hit the end of the support material Q or the support bracket S1 for directly attaching the cable rack P, the original purpose is achieved. Is.

  An embodiment of the present invention will be described below. The support bracket of the present invention is attached to the suspension bolt R that suspends the cable rack P or the support material Q on which the cable rack P is placed and fixed, so that an additional suspension bolt is attached to the lower end of the suspension bolt R. Used as an additional support bracket for connecting and supporting R1. The basic configuration of the present invention is composed of the pinching and fixing member 10 and the connection support member 20. Hereinafter, each member will be described in detail.

  The clamping and fixing member 10 is a member that clamps and fixes the side surface of the suspension bolt R located at the top of the cable rack P or the support material Q (see FIG. 1). This clamping and fixing member 10 is provided at the upper end of the substantially U-shaped locking metal fitting 11 that is engaged with the thread on one side of the suspension bolt R, and at the upper end of the connection support portion 20. And a pair of clamping fittings 12 for clamping the suspension bolt R from the bottom. Then, the clamping metal 12 is arranged so that the side surface of the suspension bolt R is clamped together with the locking metal 11, and is fixed by a pair of left and right fixing bolts 13 penetrating the clamping metal 12 and the locking metal 11.

  The sandwiching metal 12 has a planar substantially U-shaped locking part 12A that overlaps the locking metal 11 and crimps one side of the suspension bolt R on the side, and the suspension bolt R facing the locking part 12A. The other side surface is composed of an abutting portion 12B that abuts against the hook. Then, the fixing bolt 13 inserted into the contact portion 12B from the locking portion 12A side is provided so as to be tightened on the contact portion 12B side. The contact portion 12B shown in FIG. 1 is provided with a screw hole 12C in order to facilitate screwing of the fixing bolt 13.

  On the other hand, the shape of the locking metal fitting 11 superimposed on the inner side of the locking portion 12A is an independent metal fitting having a substantially U-shaped side surface (see FIG. 1). In the illustrated example, a pair of locking end portions 11B are bent at the top and bottom of the locking fitting 11, and a notch portion 11A is formed in the locking end portion 11B. By engaging the suspension bolt R in the notch 11A, the engagement force of the locking fitting 11 is increased. At this time, a notch is also provided in the locking portion 12A that overlaps with the upper locking end portion 11B, so that the side surface of the suspension bolt R can be surely fitted into the cutout portion 11A of the locking fitting 11. Furthermore, by providing the locking metal fitting 11 in accordance with the diameter of the suspension bolt R, it is possible to use it for the suspension bolt R having a different diameter without changing the clamping metal fitting 12.

  FIGS. 3A and 3B and FIGS. 4A and 4B show another embodiment of the clamp fitting 12. In these embodiments, the hanging bolt R is clamped at the end of the clamping metal 12 bent in a substantially L-shaped side surface without using the locking metal fitting 11. In this case, the notch 12 </ b> D provided in the sandwiching fitting 12 is engaged with the side surface of the suspension bolt R. And the clamping metal fitting 12 is fixed with the fixing volt | bolt 13 which penetrates 12 A of latching parts. At this time, it is also possible to provide the notch 12D only on one side of the sandwiching metal 12, and form the other sandwiching metal 12 in a plate shape like the contact part 12B shown in FIG.

  The connection support member 20 is a member that extends from the clamping and fixing member 10 to the lower side of the lower end of the suspension bolt R and connects and supports the additional suspension bolt R1. Further, an insertion hole 22 for inserting the extension suspension bolt R1 is opened at the lower end of the connection fitting 21, and the extension suspension bolt R1 is attached to the connection support member 20 with fixing nuts 23 arranged above and below the insertion hole 22. Fix it. Then, the extension cable rack P1 and the extension support material Q1 are mounted on the suspension bolt R1 supported by the connection support member 20 (see FIG. 7).

  1 to 4 show an example in which a connection fitting 21 having a substantially loop-shaped side surface is provided on the connection support member 20. That is, the connection support member 20 is extended below the sandwiching metal fitting 12 that sandwiches both side surfaces of the suspension bolt R, and the end of the support member Q or the support fitting S1 for directly attaching the cable rack P is not hit. Thus, the side fitting substantially loop-shaped connection fitting 21 is formed. Then, an insertion hole 22 for inserting the additional suspension bolt R1 is opened at the lower end of the connection fitting 21, and the additional suspension bolt R1 is connected to the connection support member 20 by the fixing nuts 23 arranged above and below the insertion hole 22. To be fixed to. 1 and 3 and 4 show examples of mounting in which the support material Q is avoided. On the other hand, FIG. 2 shows an example in which the support bracket S1 for directly suspending the cable rack P is avoided and attached.

  At this time, the connection support member 20 shown in FIGS. 1 and 2 is provided with a reinforcing bead 24 that increases the strength of the connection fitting 21 and the sandwiching fitting 12 (see FIG. 1). This reinforcing bead 24 can also be provided at the bent portion of the connecting fitting 21 (see FIG. 2). In addition, the strength of the connection fitting 21 is enhanced by bending the reinforcing side edge 25 along the side edge of the connection fitting 21 that forms the loop shape. Further, the shape of the connection fitting 21 may be a loop shape. For example, as shown in FIG. 3, a simple and wide connection fitting 21 improves the workability and workability, or as shown in FIG. The shape of the connecting fitting 21, the reinforcing bead 24, the reinforcing side edge 25, and the like can be freely selected.

  FIG. 5 shows another embodiment of the connection support member 20. That is, the connection support member 20 extends downward from a pair of clamping metal fittings 12 that clamp the suspension bolt R from both side surfaces of the suspension bolt R, and supports the ends of the support material Q or the cable rack P directly. The side surface is substantially L-shaped to avoid the metal fitting S1 from hitting. In the illustrated example, a single metal plate is bent symmetrically to form a substantially U-shaped support fitting on the side surface, and a connection support member 20 having an approximately L-shaped side surface is continuously formed at the lower part of the clamping and fixing member 10. (See FIG. 5 (b)). The sandwiching fixing member 10 has a pair of sandwiching brackets 12 provided with notches 12D sandwiching a suspension bolt R, and screws the fixing bolts 13 through screw holes 12C opened in the sandwiching bracket 12. It is. Further, the suspension bolt R1 is inserted into the insertion hole 22 provided at the lower end of the connection fitting 21 and fixed with a pair of upper and lower fixing nuts 23 (see FIG. 5A).

Of course, the connection support member 20 having a substantially L-shaped side surface can be avoided so that the end of the support material Q or the support bracket S1 for direct attachment of the cable rack P does not hit. Construction is possible even at locations where the wall surface and the end of the support material Q are in close contact. In addition, as shown in FIG. 6, even if a plurality of steady brackets T are attached to the support material Q, it is possible to increase the number while avoiding these steady brackets T.
In FIG. 6 (a), the anti-rest fittings T are connected to the support material Q from three directions. However, with this connection support member 20, the anti-rest fittings T can be avoided and mounted.

  Note that the present invention is not limited to the illustrated example, and it is possible to arbitrarily change the design and dimensions of each component such as the clamping and fixing member 10, the connection support member 20, and the connection fitting 21, and change the material. The present invention can be freely changed without departing from the scope of the present invention.

It is a use perspective view which shows one Example of this invention. It is a perspective view which shows the other use condition of this invention. The other Example of this invention is shown, (a) is a use side view, (b) is a perspective view. The other Example of this invention is shown, (a) is a use side view, (b) is a perspective view. The other Example of this invention is shown, (a) is a use side view, (b) is a perspective view. FIG. 5A is a plan view of the actual command shown in FIG. 5, and FIG. 5B is a side view thereof. It is a front view which shows the construction example using this invention.

Explanation of symbols

P cable rack P1 cable rack (for expansion)
Q Support material Q1 Support material (for expansion)
R suspension bolt R1 suspension bolt (for expansion)
S Support bracket
S1 Support bracket (for direct suspension)
T Stabilizing bracket 10 Clamping fixing member 11 Locking bracket 11A Notch 11B Locking end
12 Clamping metal 12A Locking part 12B Abutting part 12C Screw hole 12D Notch 13 Fixing bolt 20 Connecting support member 21 Connecting metal 22 Insertion hole 23 Fixing nut 24 Reinforcement bead 25 Reinforcement side edge

Claims (5)

In the extension support bracket that attaches the cable rack or the support material on which the cable rack is placed and fixed to the suspension bolt and suspends the extension suspension bolt below the suspension bolt, A clamping / fixing member having a pair of clamping metal fittings that clamp and fix the side surfaces of the bolts, and a connection support member that extends from the clamping / fixing member below the suspension bolt and supports the additional suspension bolt The coupling support member is extended below the clamping bracket for clamping the existing suspension bolt so as to avoid the end of the support material or the support bracket for directly attaching the cable rack from being hit. An insertion hole for inserting an additional suspension bolt at the lower end of the connection fitting, and fixing the additional suspension bolt to the connection support member with fixing nuts arranged above and below the insertion hole. The Cable racks and support material for expansion supporting bracket, characterized in that attaching the cable rack or support material for expansion for additional hanging bolts for additional supported by a sintered support. The clamping fixing member includes a side surface substantially U-shaped locking bracket for locking the threads of one side of the existing hanger bolts, provided at the upper end of the connecting support member, hanging from both sides of the hanger rod It is composed of a pair of clamping fittings that clamp the bolts, and is fixed with fixing bolts that pass through the clamping brackets and the locking brackets so that the side surfaces of the suspension bolts are clamped together with the locking brackets. The cable rack and the support bracket for supporting material expansion according to claim 1.   The clamp fitting is composed of a locking portion that overlaps the locking bracket of the suspension bolt and a contact portion that faces the locking portion, and the fixing bolt inserted into the contact portion from the locking portion side. The cable rack and the support bracket for supporting material expansion according to claim 2, wherein the cable rack and the support material expansion support bracket are provided so as to be tightened on the contact portion side.   The connection support member is formed to extend below the clamping bracket for clamping the suspension bolt, and is connected in a substantially loop shape on the side surface so as not to hit the end of the support member or the support bracket for directly attaching the cable rack. A metal fitting is formed, an insertion hole for inserting the additional suspension bolt is opened at the lower end of the connection metal fitting, and the additional suspension bolt is fixed to the connection support member with fixing nuts arranged above and below the insertion hole. The cable rack and the support bracket for supporting material expansion according to any one of claims 1 to 3. The connection support member is formed to extend downward from the sandwiching metal fitting, and is formed with a substantially L-shaped connection metal fitting that avoids an end of a support member or a support fitting for directly attaching a cable rack. Item 5. A cable rack and a support bracket for supporting material expansion according to item 1 or 4.

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