JP6868653B2 - Bolt support unit - Google Patents

Description

The present invention relates to a bolt support unit, particularly to a bolt support unit having a stopper fixed to a bolt.

For example, in order to attach a field edge to an indoor building base such as a light sky, it is necessary to provide a hanger to support the ceiling frame. For that purpose, a hanging bolt equipped with a hanger is fixed to the ceiling. However, the hanging bolt may be as long as 2 m, for example. Therefore, the operator must repeatedly turn the nut for fixing the hanger to the hanging bolt and screw it to the fixed position of the hanger, which deteriorates the workability of the construction.

Therefore, in Patent Document 1, the tip of the hanging bolt is formed into a cone shape so that the hanging bolt can be easily screwed into the nut. Further, as a hanger stopper for the hanging bolt, a mode in which the hanging bolt is sandwiched between a base portion having a screw groove and a clip portion is disclosed.

Utility Model Registration No. 3084062

In Patent Document 1, the weight of the object suspended on the hanger is applied to the engaging portion between the base portion and the clip portion before being applied to the hanging bolt. Therefore, the engaging portion of the stopper is required to have a load capacity that can withstand the weight of the object suspended on the hanger. However, since the engaging portion is formed by sandwiching the clip portion with respect to the base portion, a large load capacity cannot be expected from the bolt support unit.

Therefore, it is conceivable to increase the load capacity of the bolt support unit by using a so-called double nut as a stopper. In this case, the support member such as a hanger is sandwiched between the two nuts and fixed to the bolt. Further, by adjusting the fastening position of each nut, it is possible to adjust the position of the support member with respect to the bolt, the protruding height of the bolt from the support member, and the centering.

However, since the operator has to repeatedly rotate the two nuts to the fixing position of the bolt with respect to the support member, the workability related to the installation of the bolt still deteriorates.

In addition, the support member must be fixed to the bolt or the bolt must be fixed to the support member by the simultaneous work of tightening the support member by sandwiching the support member with the double nut while adjusting the height of the bolt by screwing the double nut. .. Therefore, the burden on the operator increases, and the position of the support member with respect to the bolt, the protruding height of the bolt from the support member, and the centering tend to vary, and the installation accuracy of the bolt support unit may decrease.

The present invention has been made in view of such problems, and an object of the present invention is to provide a bolt support unit capable of improving installation workability of fasteners for bolts, improving installation accuracy, and increasing load capacity. To do.

In order to achieve the above object, the bolt support unit of the present invention includes a bolt having a first male thread portion and a stopper fixed to the bolt, and the fastener is a pair that can be separated in the radial direction of the bolt. A main body made of a half-split body, a first female threaded portion formed on the inner peripheral surface of the main body, a sleeve having a second male threaded portion formed on the outer peripheral surface of the main body, and a second female threaded portion were formed. By having a fixing member having a fixed inner peripheral surface and connecting a pair of halves so as to sandwich a bolt, the first female threaded portion is first from the intersecting direction intersecting the screwing direction with respect to the first male threaded portion. While maintaining the engaged state in which the 1st male threaded portion is engaged with the 1st male threaded portion and the 1st female threaded portion is engaged with the 1st male threaded portion, the fixing member is inserted from the tip of the bolt into the 2nd male threaded portion. 2 female thread portion Ri Na sleeve is supported on the bolt by screwing the sleeve is radially a pair of half bodies with extending in the axial direction of each of a pair of halves bolt It has a hook composed of a pair of separable hook halves, and it is possible to suspend an object to be supported on the hook while the sleeve is supported by a bolt .

According to the bolt support unit of the present invention, it is possible to improve the installation workability of the fastener on the bolt, improve the installation accuracy, and increase the load capacity.

It is a perspective view which shows the state which the bolt support unit which concerns on one Embodiment of this invention suspended a ceiling frame. It is a perspective view of a bolt support unit. It is a perspective view of one half body of a sleeve body. It is a perspective view of the other half of the body of the sleeve. It is a perspective view of a fixing member. (A) to (c): It is explanatory drawing of the procedure of installing a bolt support unit.

Hereinafter, the bolt support unit according to the embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a perspective view of a state in which the bolt support unit 1 suspends the ceiling frame (support object) 2. The ceiling frame 2 is provided below a building base such as an eaves ceiling (not shown), and a ceiling panel (not shown) is arranged. The ceiling frame 2 is supported by a plurality of bolt support units 1 on the building base.

FIG. 2 shows a perspective view of the bolt support unit 1. The bolt support unit 1 includes, for example, a long bolt 3 extending from the building base, for example, about 2 m, and a stopper 4 fixed to the bolt 3. A first male threaded portion 3a is formed on the bolt 3, and the stopper 4 is composed of a fixing member 10 and a sleeve 20.

The sleeve 20 has a main body 21 fixed to the bolt 3 and a hook 22 extending downward from the main body 21 along the axial direction of the bolt 3 and then bent upward. The ceiling frame 2 is suspended on the hook 22. The main body 21 is composed of a pair of halves 21a and 21b that can be separated in the radial direction of the bolt 3, and the pair of halves 21a and 21b are connected in the radial direction of the bolt 3 so as to sandwich the bolt 3.

FIG. 3 shows a perspective view of one half-split body 21a of the main body 21 of the sleeve 20, and FIG. 4 shows a perspective view of the other half-split body 21b of the main body 21 of the sleeve 20. On the inner peripheral surface of the pair of half-split bodies 21a and 21b constituting the main body 21, in other words, on the inner peripheral surface of the tubular portion of the main body 21 formed when the pair of half-split bodies 21a and 21b are connected. Is formed with a first female threaded portion 23. The first male threaded portion 3a of the bolt 3 has the same thread pitch as the first female threaded portion 23.

A second male thread portion 24 is formed on the outer peripheral surfaces of the pair of half-split bodies 21a and 21b, in other words, the outer peripheral surfaces of the main body 21. The hook 22 formed on the sleeve 20 is composed of a pair of hook halves 22a and 22b. The pair of hook half-split bodies 22a and 22b extend downward along the axial direction of the bolt 3 from the pair of half-split bodies 21a and 21b, respectively, and then bend upward and are connected in the radial direction of the bolt 3. By doing so, the hook 22 is formed.

The pair of hook halves 22a and 22b can be separated in the radial direction together with the pair of halves 21a and 21b. In the hook 22, the pair of half-split bodies 21a and 21b are connected in the radial direction so as to sandwich the bolt 3, so that the pair of hook half-split bodies 22a and 22b are also connected in the radial direction, and the sleeve 20 is supported by the bolt 3. In this state, a support object such as the ceiling frame 2 can be suspended from the hook 22.

Specifically, the hook half-split body 22a has an axial portion 25a extending downward along the axial direction from the half-split body 21a, and a bent portion 26b bent upward from the axial portion 25a. The hook half-split body 22b also has a similar axial portion 25b and a bent portion 26b. Further, the hook 22 includes a connecting portion 27 for connecting the pair of hook halves 22a and 22b. The pair of hook halves 22a and 22b have a symmetrical shape in the width direction (the radial direction of the bolt 3; the same applies hereinafter) except for the connecting portion 27.

The connecting portion 27 has fitting holes 28a, 28b, 28c penetrating in the width direction of the hook half split body 22a, and a protruding portion 29a protruding toward the hook half split body 22a in the width direction of the hook half split body 22b. , 29b, 29c. By fitting the protrusions 29a, 29b, 29c into the fitting holes 28a, 28b, 28c, the pair of hook halves 22a, 22b, and eventually the pair of halves 21a, 21b are connected in the radial direction. ..

Specifically, the fitting of the protruding portions 29a, 29b, 29c to be fitted to the fitting holes 28a, 28b, 28c, respectively, may be about a clearance fit. This facilitates the work of connecting the pair of hook halves 22a and 22b. In this case, by applying an adhesive to the protruding portions 29a, 29b, and 29c, it is possible to form a strong connecting portion 27 while improving workability.

Further, as shown in FIGS. 3 and 4, the fitting holes 28b and 28c of the fitting holes 28a, 28b and 28c may be cut out in the width direction to form slits 30b and 30c, respectively. By forming the slits 30b and 30c and using an adhesive, the workability when connecting the pair of hook halves 22a and 22b and the rigidity of the hook 22, the main body 21 and the sleeve 20 after the connection are enhanced. Is possible.

FIG. 5 shows a perspective view of the fixing member 10. The fixing member 10 is a so-called nut and has a fixed inner peripheral surface 12 on which the second female thread portion 11 is formed. The second female thread portion 11 has the same screw pitch as the second male thread portion 24 on the outer peripheral surface of the main body 21. Further, a large number of grooves 13 are formed on the outer peripheral surface of the fixing member 10 in the axial direction, which facilitates screwing of the fixing member 10 into the main body 21.

Hereinafter, the construction procedure for installing the bolt support unit 1 will be described with reference to FIGS. 6A to 6C. First, as shown in FIG. 6A, a pair of half-split bodies 21a and 21b are arranged at positions where the sleeve 20 is to be fixed in the axial direction of the bolt 3, and the bolt 3 is attached by the pair of half-split bodies 21a and 21b. Insert from the direction of the arrow. That is, from the state in which the main body 21 is separated, in other words, the pair of half-split bodies 21a and 21b, the pair of half-split bodies 21a and 21b are connected so as to sandwich the bolt 3.

Next, as shown in FIG. 6B, from the crossing direction X (that is, the radial direction of the bolt 3) that intersects the screwing direction Y (that is, the axial direction of the bolt 3) with respect to the first male threaded portion 3a of the bolt 3. The first female threaded portion 23 of the main body 21 is engaged with the first male threaded portion 3a of the bolt 3. This engagement is possible because the first male threaded portion 3a of the bolt 3 has the same thread pitch as the first female threaded portion 23 of the main body 21. In FIG. 6B, only the half-split body 21a side of the main body 21 and the fixing member 10 is shown in cross section.

Next, while maintaining this engaged state, the fixing member 10 is inserted upward from the lower end (tip) of the bolt 3 as indicated by an arrow, and the second male screw portion 24 of the main body 21 is inserted into the second male screw portion 24 of the fixing member 10. 2 Screw the female screw portion 11. This screwing is possible because the second male threaded portion 24 of the main body 21 has the same thread pitch as the second female threaded portion 11. Further, the fixing member 10 can be inserted into the bolt 3 before screwing because the fixed inner peripheral surface 12 of the fixing member 10 has a diameter larger than that of the bolt 3.

Then, as shown in FIG. 6C, the pair of half-split bodies 21a and 21b and the pair of hook half-split bodies 22a and 22b are connected to form an integrated main body 21, hook 22, and eventually sleeve 20. The sleeve 20 is supported by the bolt 3 in this state. Further, by fitting the protruding portions 29a, 29b, 29c into the fitting holes 28a, 28b, 28c in the above-described manner, the pair of half-split bodies 21a, 21b and the pair of hook half-split bodies 22a, respectively. The connection of 22b is easily and firmly performed.

As described above, in the bolt support unit 1 of the present embodiment, the first female threaded portion 23 of the pair of half split bodies 21a and 21b is engaged with the first male threaded portion 3a of the bolt 3 from the crossing direction X, and one-touch. The sleeve 20 can be installed on the bolt 3 with. That is, it is not necessary to screw the first female screw portion 23 of the sleeve 20 in the screwing direction Y while repeatedly turning the first female screw portion 23 of the long bolt 3 with respect to the first male screw portion 3a. Therefore, the workability of the construction related to the installation of the bolt support unit 1 is improved. Specifically, the work can be greatly simplified and the work time can be significantly shortened.

Further, while maintaining the engaged state of the first female threaded portion 23 of the pair of half-split bodies 21a and 21b with respect to the first male threaded portion 3a of the bolt 3, the fixing member 10 is inserted from the lower end of the bolt 3 to form the main body. The second female threaded portion 11 of the fixing member 10 is screwed into the second male threaded portion 24 of 21. As a result, the sleeve 20 becomes the bolt 3 in a state where the pair of half-split bodies 21a and 21b and the pair of hook half-split bodies 22a and 22b are connected to form the integrated main body 21, hook 22, and eventually the sleeve 20. Be supported.

Therefore, since the sleeve 20 can be firmly supported at the desired position of the bolt 3, the downward protrusion length of the bolt 3 is less likely to vary in the installation work of the bolt support unit 1, and the bolt support unit 1 Installation accuracy can be improved. Further, since the hook 22 is integrated with the sleeve 20, the load capacity of the bolt support unit 1 can be increased as compared with the case where the engaging portion such as a clip provided on the stopper is only engaged with the bolt 3. Can be planned.

Further, the hook 22 has a connecting portion 27 for connecting the pair of hook halves 22a and 22b. As a result, the rigidity of the bolt support unit 1 can be increased by the engaging force of the sleeve 20 with respect to the bolt 3, the fastening force of the fixing member 10 with respect to the sleeve 20, and the connecting force of the pair of hook halves 22a and 22b. Therefore, the load capacity of the bolt support unit 1 can be further increased.

Further, since the first male threaded portion 3a of the bolt 3 has the same thread pitch as the first female threaded portion 23 formed on the inner peripheral surface of the main body 21, the first female threaded portion 23 of the sleeve 20 intersects the first female threaded portion 23 in the intersecting direction. It can be fitted and engaged with the first male thread portion 3a of the bolt 3 from X without deviation. Therefore, the sleeve 20 can be firmly fixed by the bolt 3, and the load capacity of the bolt support unit 1 can be further increased.

Further, since the fixed inner peripheral surface 12 of the fixing member 10 has a diameter larger than that of the bolt 3, the fixing member 10 can be inserted into the bolt 3 in a short time before the fixing member 10 is screwed into the main body 21. it can. Therefore, the workability of the construction related to the installation of the bolt support unit 1 can be further improved.

Although the description of the embodiment of the present invention is completed above, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, the bolt support unit 1 described in the above embodiment is applicable to various applications other than those described above as long as the object to be supported is supported by the bolt 3 or the object to be supported supports the bolt 3. It is possible.

1 bolt support unit
2 Ceiling frame (support object)
3 bolt
3a 1st male thread part
4 Stopper
10 Fixing member
11 2nd female thread
12 Fixed inner peripheral surface
20 sleeve
21 Main body 21a, 21b Half-split body
22 Hooks 22a, 22b Hook halves
23 1st female thread
24 2nd male thread
27 Connection

Claims (4)

Bolts with a first male thread and
With a stopper fixed to the bolt
The stopper is
It has a main body made of a pair of half-split bodies that can be separated in the radial direction of the bolt, a first female threaded portion formed on the inner peripheral surface of the main body, and a second male threaded portion formed on the outer peripheral surface of the main body. With a sleeve
It has a fixing member having a fixed inner peripheral surface on which a second female thread portion is formed, and has a fixing member.
By connecting the pair of halves so as to sandwich the bolt, the first female threaded portion is engaged with the first male threaded portion from an intersecting direction intersecting the screwing direction with respect to the first male threaded portion. While maintaining the engaged state in which the first female threaded portion is engaged with the first male threaded portion , the fixing member is inserted from the tip of the bolt and the second female threaded portion is inserted into the second male threaded portion. Ri said sleeve by screwing the threaded portion Na is supported by the bolt,
The sleeve has a hook composed of a pair of hook halves that extend from the pair of halves along the axial direction of the bolt and that can be separated in the radial direction together with the pair of halves. ,
A bolt support unit capable of suspending a support object on the hook while the sleeve is supported by the bolt. The bolt support unit according to claim 1 , wherein the hook has a connecting portion for connecting the pair of hook halves. The bolt support unit according to claim 1 or 2 , wherein the first male threaded portion has the same thread pitch as the first female threaded portion. The bolt support unit according to any one of claims 1 to 3 , wherein the fixed inner peripheral surface has a diameter larger than that of the bolt.

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