JP5288317B2 - Reinforcing bracket for hanging bracket - Google Patents

Description

  The present invention relates to a reinforcing metal fitting for a hanging metal fitting that can prevent the deformation of the hanging metal fitting even when subjected to repeated shaking during an earthquake.

  As described in Patent Document 1, the applicant of the present application has previously proposed a seismic auxiliary tool for a hanging metal fitting that is attached so that the hanging metal fitting attached to the shape steel is not detached even by vibration such as an earthquake. This auxiliary tool is attached to a hanging bracket for supporting a suspension bolt. The hanging metal fitting to which this auxiliary tool is attached has an approximately U-shaped opening that is engaged with the horizontal protrusion of the shape steel flange, and the inside of this opening. It is attached to a hanging metal fitting of a type having a fastening bolt for fastening the horizontal protrusion from below.

  The structure of the auxiliary tool of Patent Document 1 includes a locking housing that has a substantially U-shaped planar shape that is locked to the side surface of the hanging bracket and that extends in the opening direction of the hanging bracket, and a fixed plate body that is connected to the shape steel. It is provided. By attaching this auxiliary tool to the hanging bracket, even if the fastening bolt of the hanging bracket is loosened due to an earthquake or the like, the auxiliary bracket supports the hanging bracket, so that the hanging bracket can be prevented from falling off. .

  Further, Patent Document 2 describes an auxiliary tool that reinforces a hanging metal fitting having a blade type. A pair of the blades is provided on the left and right side surfaces of the suspension fitting, and has an effect of increasing the left and right support strength with respect to the suspension fitting by being brought into contact with the flange of the shape steel. In the auxiliary tool of Patent Document 2, a long bolt is used as a means for reinforcing the hanging metal fitting provided with such blades in place of the flat U-shaped locking housing used in Patent Document 1. Is.

Japanese Patent No. 2747667 JP 2011-163078 A

  According to the auxiliary metal fittings described in Patent Document 1 and Patent Document 2, it is possible to reinforce along the longitudinal direction of the locking housing and the long bolt, and in the direction in which the flange of the shape steel is removed from the opening of the hanging metal fitting. Can be prevented from moving. However, the Great East Japan Earthquake revealed that there were unexpected vulnerabilities in a direction contrary to these initial expectations.

  That is, among the hanging metal fittings, the type provided with the blades described in Patent Document 2 has blades that contact the flange of the shape steel on the left and right side surfaces, so that the support strength in the left-right direction is particularly reinforced. It was thought that it was durable enough without it. However, when the type of suspension fitting with this blade equipped with a conventional auxiliary fitting was confirmed after the earthquake, it was confirmed that the blade was deformed and there was a gap between the flange and the blade. ing. This is because the blades are deformed by receiving unexpected vibrations and loads in the left and right blade directions with respect to the type of suspension metal fitting provided with the blades. In this way, the suspension fittings in which the blades are deformed and a gap is generated on the contact surface with the flange have already completely lost the tightening holding force against the flange, and can easily be removed when an aftershock or the like is applied. There is a risk.

  Therefore, the present invention was created to solve the above-mentioned problems, and by attaching it to a type of suspension fitting having a blade, the durability of the suspension fitting against the load and vibration applied in the lateral direction of the suspension fitting is enhanced. An object of the present invention is to provide a reinforcing metal fitting for a suspension metal fitting that can be used in combination with a conventional reinforcing metal fitting that uses a long bolt.

In order to achieve the above-mentioned object, the first means in the present invention is attached to an existing hanging metal fitting 10 to be engaged with a horizontal projection P of a construction material using a shape steel, and the supporting strength of the hanging metal fitting 10 is increased. In the reinforcing bracket for suspension bracket to be strengthened,
The hanging metal fitting 10 includes a support portion 11 that vertically supports the suspension bolt Q, a locking portion 12 that extends horizontally from the upper portion of the support portion 11 and locks on the horizontal projection P of the construction material, and a support The side surface is substantially U-shaped with the crimping portion 13 that is horizontally extended from the lower portion of the portion 11 and is attached to the lower surface of the horizontal projection portion P with a fastening bolt 15 that is fastened from below. A hanging bracket 10 having a pair of left and right blades 14 to be brought into contact with a locking portion 12,
A front inverted U-shaped fitting body 1 that is mounted so as to surround the outer surface of the locking portion 12 of the hanging metal fitting 10 from above and is locked to the upper surface of the blade 14 and a fixing bolt that penetrates the fitting body 1 from the side surface. 2 and
A fixing bolt connecting hole 3 overlapping the connecting hole 16 opened in the locking portion 12 is formed on the side surface of the fitting body 1, and the fixing bolt 2 is inserted into the fixing bolt connecting hole 3 and the connecting hole 16 and suspended. That is, it is configured to be fixed to the metal fitting 10.

  In the second means, the fitting body 1 is composed of a top plate 1A that overlaps the upper surface of the locking portion 12, and a pair of side plates 1B that are bent downward from the left and right side edges of the top plate 1A. The fixing bolt connecting hole 3 is formed with an insertion hole 3A that is opened in one side plate 1B and through which the fixing bolt 2 is inserted, and a tap hole 3B that is provided in the other side plate 1B and is screwed to the fixing bolt 2. The fitting body 1 is configured to crimp the inner locking portion 12 by tightening the fixing bolt 2.

  In the third means, the fitting body 1 includes a reinforcing piece 1C that is bent outward from the front and rear side edges of the side plate 1B, and the lower end portion of the reinforcing piece 1C is engaged with the upper surface of the blade 14. It is configured to stop.

  As in claim 1 of the present invention, a fitting body 1 having a front-side inverted U-shape that is mounted so as to surround the outer surface of the locking portion 12 of the hanging bracket 10 and is locked to the upper surface of the blade 14, and the fitting body The fixing bolt connecting hole 3 is formed on the side surface of the fitting body 1 and overlaps with the connecting hole 16 opened in the locking portion 12. The fixing bolt connecting hole 3 and the connecting hole 16, the fixing bolt 2 is inserted into the suspension fitting 10 and fixed to the suspension fitting 10, thereby enhancing the durability against the load and vibration applied to the suspension fitting 10 of the type including the blades 14 in the left-right direction. Is now possible. As a result, it is possible to prevent the suspension fitting from being deformed even if it is repeatedly shaken during an earthquake.

  Further, when the reinforcing metal fitting of the present invention is mounted, it can be directly mounted on the locking portion 12, so that the conventional reinforcing metal fitting 20 of the type that is mounted from the crimping portion 13 to the support portion 11 when the reinforcing metal fitting of the present invention is used. Can be used in combination with it, and it also has the ability to prevent detachment in the direction perpendicular to the construction material.

  As in claim 2, the fitting body 1 includes a top plate 1 </ b> A that overlaps the upper surface of the locking portion 12, and a pair of side plates 1 </ b> B that are bent downward from the left and right side edges of the top plate 1 </ b> A. The bolt connecting hole 3 is formed with an insertion hole 3A that is opened in one side plate 1B and allows the fixing bolt 2 to pass therethrough, and a tap hole 3B that is provided in the other side plate 1B and that fixes the fixing bolt 2 with screws. It is possible to reinforce the structure of the locking portion 12 of the hanging metal fitting 10 by configuring the fitting body 1 to crimp the inner locking portion 12 by tightening. As a result, the strength of the hanging metal fitting 10 can be increased and the effect of preventing deformation of the blades 14 can be further enhanced.

  According to a third aspect of the present invention, the fitting body 1 includes a reinforcing piece 1C that is bent outward from the front and rear side edges of the side plate 1B, and is configured to lock the lower end portion of the reinforcing piece 1C to the upper surface of the blade 14. Therefore, the structure of the side plate 1B can be strengthened, and the strength of the blades 14 in contact with the side plate 1B and the reinforcing piece 1C can be increased.

It is a perspective view of the use condition which shows one Example of this invention. It is a side view of the use condition which shows one Example of this invention. It is sectional drawing which shows one Example of the fixed volt | bolt connection hole of this invention. It is a perspective view which shows one Example of the conventional reinforcement metal fitting used together in this invention. It is a perspective view which shows the other Example of the conventional type reinforcement metal fitting used together by this invention.

  According to the present invention, by attaching to a suspension bracket of a type having blades, the durability against load and vibration applied in the left-right direction of the suspension bracket is strengthened to prevent deformation of the blades, and a long bolt is used conventionally. The initial objectives such as being able to be used together with the mold reinforcement brackets were achieved.

  Examples of the present invention will be described below. The reinforcing metal fitting of the present invention is attached to an existing hanging metal fitting 10 that is engaged with a horizontal projection P of a construction material using a shape steel to prevent deformation of the blade.

  The hanging metal fitting 10 to which the reinforcing metal fitting of the present invention is attached is particularly a hanging metal fitting 10 provided with blades 14 (see FIG. 1). That is, the hanging metal fitting 10 has a substantially U-shaped side surface at the support portion 11, the locking portion 12, and the crimping portion 13 (see FIG. 2). That is, the support portion 11 is a member that vertically supports the suspension bolt Q, and is provided with a locking portion 12 that extends horizontally from the upper portion and locks on the horizontal projection P of the construction material. Furthermore, the crimping part 13 is a member that extends horizontally from the lower part of the support part 11, and a fastening bolt 15 that is fastened and fixed from below is attached to the lower surface of the horizontal protrusion P. Then, a pair of left and right blades 14 are provided on the locking portion 12, and the blades 14 are brought into contact with the upper surface of the horizontal protrusion P. In addition, a connecting hole 16 is formed in the support portion 11 and the crimping portion 13 in advance, and is configured so that other instruments according to the installation state of the hanging bracket 10 can be connected.

  The reinforcing metal fitting of the present invention includes a fitting body 1 and a fixing bolt 2 (see FIG. 1). The fitting body 1 has a front-side inverted U-shape that is mounted so as to surround the outer surface of the locking portion 12 of the hanging metal fitting 10 from above (see FIG. 3). And the lower end part of the fitting body 1 is provided so that it may latch on the upper surface of the blade | wing 14 at the time of mounting | wearing (refer FIG. 1). Further, a fixing bolt connecting hole 3 is opened on the side surface of the fitting body 1 (see FIG. 2). The fixing bolt connecting hole 3 is formed in accordance with a position where it overlaps with the connecting hole 16 opened in the locking portion 12, and the fixing bolt 2 is inserted therethrough.

  The illustrated fitting body 1 includes a top plate 1A that overlaps the upper surface of the locking portion 12, and a pair of side plates 1B that are bent downward from the left and right side edges of the top plate 1A (see FIG. 3). ). Further, the reinforcing piece 1C is bent from the front and rear side edges of the side plate 1B to the left and right. The reinforcing piece 1C is provided so as to increase the strength of the fitting body 1 and to be engaged with the upper surface of the blade 14 together with the side plate 1B at the lower end portion of the reinforcing piece 1C.

  The fixing bolt connecting hole 3 through which the fixing bolt 2 is inserted is composed of an insertion hole 3A opened in one side plate 1B and a tap hole 3B provided in the other side plate 1B (see FIG. 3). When the fixing bolt 2 inserted through the insertion hole 3A is screwed into the tap hole 3B and tightened, the fitting body 1 is configured to crimp the inner locking portion 12. That is, these fixing bolt connection holes 3 are provided in accordance with the positions of the connection holes 16 formed in advance in the locking portions 12 of the suspension fitting 10 (see FIG. 2). Therefore, when the fixing bolt 2 screwed to the tap hole 3B from the insertion hole 3A is tightened, the side plates 1B are tightened with each other. Therefore, the locking portion 12 to which the side plate 1B is attached is simultaneously tightened. Increases strength. As another embodiment of the fixing bolt connecting hole 3, a fixing nut can be used instead of the tap hole 3B (not shown).

  The reinforcing metal fitting of the present invention can be used alone or in combination with the conventional reinforcing metal fitting 20. In the auxiliary metal fitting according to the present invention, the conventional reinforcing metal fitting 20 is a reinforcing metal fitting 20 of a type using a long bolt 23, a locking metal fitting 21 connected from the crimping part 13 to the support part 11 of the hanging metal fitting 10, It is the reinforcement metal fitting 20 which connects the locking plate 22 locked to the construction material of this with the long volt | bolt 23 (refer FIG. 4, 5). In this reinforcing metal fitting 20, the shape of the locking plate 22 is changed depending on the type of construction material.

  The locking metal fitting 21 in the illustrated example has a substantially U-shaped flat surface, and is provided with a screw hole 21 </ b> B for screwing the long bolt 23 in the bent portion, and a locking portion for locking to the rear end portion of the support portion 11. 21A is provided at the open end (see FIGS. 4 and 5). On the other hand, the locking plate 22 includes a locking plate 22 that is locked to the L-shaped steel construction material and a locking plate 22 that is locked to the H-shaped steel construction material.

  The locking plate 22 shown in FIG. 4 is a type of locking plate 22 that is locked to the horizontal protrusion P when L-shaped steel is used as a construction material. The locking plate 22 is formed by bending a locking piece 22 </ b> C that locks to the upper end of the L-shaped steel on the locking plate 22. In the illustrated example, a through hole 22B having a changed height is formed on the plate surface of the locking plate 22, and the height of the locking piece 22C can be changed. The long bolt 23 inserted through the through hole 22B is fixed by a fixing nut 23A.

  The type of locking plate 22 shown in FIG. 5 is a type of locking plate 22 that locks to the horizontal protrusion P when H-shaped steel is used as a construction material. This locking plate 22 is formed with a U-shaped locking piece 22 </ b> C that sandwiches the horizontal protrusion P vertically. In the illustrated example, a through hole 22B is formed in the plate surface of the locking plate 22, and the long bolt 23 inserted through the through hole 22B is fixed by a fixing nut 23A. Further, the upper and lower surfaces of the horizontal protrusion P are held by a pair of upper and lower locking pieces 22C. Note that the conventional reinforcing metal fitting 20 is not limited to the illustrated example, and other conventional reinforcing metal fittings 20 using the locking metal fitting 21 can be used in combination.

  In the present invention reinforcing metal fitting, it is described as being mainly attached to the hanging metal fitting 10 fixed to the horizontal projection P of the construction material, but the mounting position of the present invention reinforcing metal fitting is not limited to this example, Any location may be used as long as the hanging bracket 10 can be fixed, and the usage location of the present invention is not limited to this example. Further, the present invention is not limited to the illustrated examples, and the design can be freely changed without changing the gist of the present invention.

P Horizontal protrusion Q Suspension bolt 1 Fitting body 1A Top plate 1B Side plate 1C Reinforcement piece 2 Fixing bolt 3 Fixing bolt connecting hole 3A Insertion hole 3B Tap hole 10 Suspension fitting 11 Support part 12 Locking part 13 Crimp part 14 Blade 15 Tightening Bolt 16 Connecting hole 20 Reinforcing bracket 21 Locking bracket 21A Locking portion 21B Screw hole 22 Locking plate 22A Locking plate 22B Through hole 22C Locking piece 23 Long bolt 23A Fixing nut

Claims (3)

Attach to the existing hanging brackets that are locked to the horizontal projections of the construction material using the shape steel,
The hanging bracket includes a supporting portion that vertically supports the suspension bolt, a locking portion that extends horizontally from the upper portion of the supporting portion and that locks on the horizontal projection of the construction material, and that extends horizontally from the lower portion of the supporting portion. A pair of left and right blades that make contact with the horizontal protrusions are used as locking parts. The hanging bracket provided,
A front inverted U-shaped fitting body that is mounted so as to surround the outer surface of the latching portion of the hanging bracket from above and is latched to the upper surface of the blade, and a fixing bolt that penetrates the fitting body from the side surface,
A fixing bolt connecting hole that overlaps with the connecting hole opened in the locking portion is formed on the side surface of the fitting body, and the fixing bolt is inserted into the fixing bolt connecting hole and the connecting hole and fixed to the hanging bracket. Reinforcing metal fittings for hanging metal fittings.   The fitting body is composed of a top plate overlaid on the upper surface of the locking portion, and a pair of side plates bent downward from left and right side edges of the top plate, and the fixing bolt connecting hole is one side plate. An insertion hole through which the fixing bolt is inserted and a tap hole provided in the other side plate for screwing the fixing bolt is formed, and the fitting body presses the internal locking portion by tightening the fixing bolt. The reinforcing metal fitting for a hanging metal fitting according to claim 1 configured as described above. The fitting member from each longitudinal side edge of the side plate comprises a reinforcing piece which is bent toward the outside, reinforcing piece according to claim 2, wherein the lower portion is configured to engage the upper surface of the vane of Reinforcing bracket for hanging bracket.

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