JP2020197228A - Bolt support unit and fastener - Google Patents

Abstract

To provide a bolt support unit which can improve workability related to the installation of a bolt, installation accuracy, and reliability by a simple constitution, and a fastener.SOLUTION: A bolt support unit 1 comprises a bolt 3 having a male screw part 3a, and a fastener 4 fixed to the bolt 3. The fastener 4 has: a main body 20 having a penetration hole 21 extending in an axial direction of the bolt 3; a first notched part 30 formed by notching a side wall 24 of the main body 20 forming the penetration hole 21 in an axial direction; a female screw part 40 formed at an internal peripheral face of the penetration hole 21; and a hanger 10 having a hook 50 extending in the axial direction from the main body 20, and hung down by a hang of a support object 2. By making the main body 20 incline in an orientation along the axial direction after making the bolt 3 penetrate the main body 20 from the first notched part 30 in a posture that the main body 20 is inclined in the axial direction, the female screw part 40 is engaged with the male screw part 3a from an intersecting direction intersecting with a screwing direction with respect to the male screw part 3a, and the hanger 10 is supported to the bolt 3 by maintaining the engagement state.SELECTED DRAWING: Figure 8

Description

The present invention relates to a bolt support unit and a fastener.

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, the hanger stopper for the hanging bolt is formed with a base portion having a screw groove and a clip portion for sandwiching the hanging bolt between the hanger.

Utility Model Registration No. 3084062

The bolt support unit of Patent Document 1 is composed of a hanging bolt (bolt), a hanger, a stopper having a clip portion, and a nut. The weight of the support object suspended on the hanger is applied to the engagement portion between the horizontal portion of the hanger and the clip portion of the stopper before being applied to the bolt. Since this engaging portion is formed by sandwiching the clip portion with respect to the horizontal portion, a large load capacity cannot be expected from the bolt support unit, and reliability may not be ensured with respect to the required load capacity.

In addition, the operator performs a two-action operation of holding the three parts of the hanger, the stopper, and the nut, sandwiching the suspended bolt between the hanger and the stopper, and then fastening the nut to the bolt. It will be. Also, although bolts are easy to screw into nuts, nuts must still be screwed into bolts. Therefore, there are still problems in improving workability related to the installation of the bolt support unit.
In addition, after positioning the bolt by sandwiching it between the hanger and the fastener, if the fastening condition or fastening position shifts when the nut is fastened to the bolt, the stopper and eventually the hanger will shift in position, and the bolt will be supported. The installation accuracy of the unit may decrease.

The present invention has been made in view of such a problem, and provides a bolt support unit and a stopper capable of improving workability, installation accuracy, and reliability related to bolt installation with a simple configuration. The purpose is to do.

In order to achieve the above object, the bolt support unit of the present invention includes a bolt having a male thread portion and a stopper fixed to the bolt, and the stopper is a through hole extending in the axial direction of the bolt. The main body having a through hole, the first notch portion in which the side wall of the main body forming the through hole is cut out in the axial direction, the female threaded portion formed on the inner peripheral surface of the through hole, and the supporting object extending axially from the main body. Has a hanger equipped with a hook that can be hooked and hung, and after inserting a bolt through the first notch in a posture in which the main body is tilted with respect to the axial direction, the main body is tilted in the axial direction. By doing so, the female threaded portion is engaged with the male threaded portion from the intersecting direction intersecting the screwing direction with respect to the male threaded portion, and by maintaining the engaged state, the hanger is supported by the bolt.
Further, the stopper of the present invention comprises a hanger used for the bolt support unit described above, and is fixed to the bolt described above.

According to the bolt support unit and the fastener of the present invention, it is possible to improve workability, installation accuracy, and reliability related to bolt installation with a simple configuration.

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 the hanger of FIG. It is a side view of the hanger seen from the A direction of FIG. It is a side view of the hanger seen from the B direction of FIG. It is a side view of the hanger seen from the C direction of FIG. It is a top view of the hanger seen from the D direction of FIG. It is a bottom view of the hanger seen from the E direction of FIG. (A) to (b): It is explanatory drawing which shows the construction procedure for 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 a bolt support unit 1 (hereinafter, also simply referred to as a support unit 1) suspends a ceiling frame (support object) 2. The ceiling frame 2 is provided below a building base such as a light sky (not shown), and a ceiling panel (not shown) is arranged. The ceiling frame 2 is supported by a plurality of support units 1 on the building base.

The support unit 1 includes a long bolt 3 extending from the building base, for example, about 2 m, and a stopper 4 fixed to the bolt 3. A male screw portion 3a is formed on the bolt 3, and the stopper 4 is composed of a hanger 10. In this specification, in the installed state of the support unit 1, the axial direction of the bolt 3 is set to "axial direction", the radial direction of the bolt 3 is set to "diameter direction", and the circumferential direction of the bolt 3 is set to "circumferential direction". explain. Further, for convenience, the description will be given based on the vertical and horizontal directions shown in each figure, but these directions change depending on the actual installation situation of the support unit 1.

The hanger 10 is supported by engagement with the bolt 3, is fixed to the bolt 3 by maintaining this engaged state, and a support object such as a ceiling frame 2 is suspended on a hook 50 described later of the hanger 10. .. A tubular cover (not shown) may be placed on the hanger 10 and attached. In this case, the hanger 10 can be fixed even more firmly while effectively preventing the hanger 10 from tilting or falling off in the installed state of the stopper 4.

2 is a perspective view of the hanger 10, FIG. 3 is a side view of the hanger 10 seen from the A direction of FIG. 2, FIG. 4 is a side view of the hanger 10 seen from the B direction of FIG. 2, and FIG. 5 is C of FIG. A side view of the hanger 10 seen from the direction, FIG. 6 shows a top view of the hanger 10 seen from the D direction of FIG. 2, and FIG. 7 shows a bottom view of the hanger 10 seen from the E direction of FIG.

The hanger 10 includes a main body 20, a first notch portion 30, a female screw portion 40, a hook 50, a second notch portion 60, and a support portion 70. The main body 20 has, for example, a tubular shape and has a through hole 21 extending in the axial direction. The through hole 21 penetrates the upper wall 22 and the lower wall 23 facing in the axial direction, and is surrounded by a peripheral wall, in other words, a side wall 24. The first notch 30 is formed by notching the side wall 24 of the main body 20 from below in the axial direction.

The second notch 60 is formed by notching the side wall 24 of the main body 20 in a direction different from that of the first notch 30 in the axial direction, that is, from above in the axial direction, at a position where the side wall 24 of the main body 20 faces the first notch 30 in the radial direction. ing. The female thread portion 40 is formed on the inner peripheral surface of the through hole 21 on the side wall 24 and has the same thread pitch as the male thread portion 3a. The female screw portion 40 is formed at a position where the first notch portion 30 and the bolt 3 face each other in the radial direction and a position where the second notch portion 60 and the bolt 3 face each other in the radial direction.

By forming the first notch 30 and the second notch 60 in the main body 20, semicircular inner peripheral surfaces are formed on the upper wall 22 and the lower wall 23, respectively, and the through hole 21 and the female thread portion 40 are formed. Will be formed only on these inner peripheral surfaces. Not limited to this, the female thread portion 40 may be provided only at one opposite position of the first notch portion 30 and the second notch portion 60.

The hook 50 extends axially from the main body 20 and is hung by hooking a support object. Specifically, the hook 50 has an axial portion 51 extending downward along the axial direction from the lower wall 23 of the main body 20, and a bent portion 52 bent upward from the axial portion 51. It is possible to hook an object to be supported such as the ceiling frame 2 on the bent portion 52 to support it.

The support portion 70 projects in the axial direction from the upper wall 22 which is one end wall of the main body 20, and abuts on the bolt 3 in the radial direction when the hanger 10 is engaged with the bolt 3. Specifically, the support portion 70 has a broken annular shape having the abutment 71, and when the hanger 10 is tilted with respect to the bolt 3 along the axial direction, the bolt is radially inward from the abutment 71 to the support portion 70. 3 is positioned.

In this way, the first notch 30 and the second notch 60 are formed in the main body 20 in different directions in the axial direction and at opposite positions in the radial direction, so that the main body 20 has a side wall 24. A cavity 25 penetrating in the radial direction is formed. Then, female threaded portions 40 are formed on the inner peripheral surfaces of the through holes 21 located on the lower side and the upper side of the cavity 25, respectively.

Further, by forming the first notch portion 30 and the second notch portion 60 in the main body 20, the main body 20, that is, in the space from the first notch portion 30 and the second notch portion 60 to the cavity 25 and the through hole 21. While tilting the hanger 10 in the axial direction, the bolt 3 can be positioned in the through hole 21 and, by extension, can be engaged with each female screw portion 40 formed on the inner peripheral surfaces of the upper wall 22 and the lower wall 23.

Hereinafter, the construction procedure for installing the support unit 1 will be described with reference to FIGS. 8A to 8B. 8 (a) to 8 (b) schematically show the hanger 10 as a partial vertical cross section in order to explain the construction process of the support unit 1.

As shown in FIG. 8A, first, the main body 20 is tilted in the axial direction, in other words, the hanger 10 is in a posture in which the side wall 24 of the main body 20 is tilted in the axial direction. 1 Insert the bolt 3 from the notch 30 into the main body 20. As a result, the bolt 3 can be projected from the second notch 60, and the bolt 3 is positioned in the cavity 25 of the main body 20. At this time, by adjusting the height position of the hanger 10 with respect to the bolt 3, the downward protrusion height of the bolt 3 from the main body 20 is determined. The bolt 3 may be inserted from the second notch 60 into the main body 20.

Next, as shown in FIG. 8B, the main body 20, that is, the hanger 10 is tilted in the direction of the arrow in the axial direction. As a result, each female threaded portion 40 is engaged with the male threaded portion 3a from the crossing direction (in other words, the radial direction) intersecting the screwing direction (in other words, the axial direction) of the bolt 3 with respect to the threaded portion 3a. The hanger 10 is supported by the bolt 3 by maintaining the engaged state (hereinafter, also referred to as the engaged state).

At the same time, since the support portion 70 is brought into contact with the bolt 3 from the radial direction, the rattling of the hanger 10 with respect to the bolt 3 is suppressed, and the hanger 10 barrel stopper 4 is firmly supported by the bolt 3 to support the support unit. Installation of 1 is completed. In the support unit 1 that has been installed, a support object such as a ceiling frame 2 is hooked on the bent portion 52 of the hook 50 and hung. The bolt 3 may be fixed to the building base after the support unit 1 is formed, or the support unit 1 may be formed by the procedure described above after fixing the bolt 3 to the building base.

Since the load of the support object suspended by the hook 50 is mainly applied vertically downward, the hanger 10 is maintained in a posture in which the axial portion 51 of the hook 50 is in the vertical direction, and the axial direction of the main body 20 is in the vertical direction. The main body 20 is basically not tilted with respect to the vertical direction. Further, in such a posture, the support portion 70 is brought into contact with the bolt 3 from the radial direction, so that the inclination of the main body 20 with respect to the vertical direction is restricted. Therefore, when the support unit 1 is used, the engaged state is not released and the hanger 10 does not fall off.

As described above, in the support unit 1 of the present embodiment, by engaging each female screw portion 40 with the screw portion 3a of the bolt 3 from the intersecting direction, the hanger 10 as the stopper 4 is positioned on the bolt 3 with one touch. can do. Therefore, it is possible to improve workability, installation accuracy, and reliability related to the installation of the bolt 3 with a simple configuration.

More specifically, by providing the first notch 30 in the main body 20 of the hanger 10, the bolt 3 is provided from the first notch 30 to the main body 20 only by inclining the main body 20 of one member in the axial direction. It is possible to insert it. Further, it is possible to engage each female threaded portion 40 of the hanger 10 with the threaded portion 3a of the bolt 3 from the crossing direction only by tilting the main body 20 in the axial direction.

That is, when positioning the hanger 10 with respect to the bolt 3, the operator does not have to repeatedly turn the nut with respect to the screw portion 3a of the bolt 3 to screw the hanger 10 while holding the plurality of parts as in the conventional case. .. As a result, the positioning work of the hanger 10 with respect to the bolt 3 can be greatly simplified and the working time can be significantly shortened only by using the hanger 10 composed of the main body 20 of one member. Therefore, the workability of the construction related to the installation of the support unit 1 is greatly improved.

Further, since the hanger 10 realizes the function as the stopper 4 by one member, the required load capacity is satisfied and the reliability of the support unit 1 is improved by increasing the rigidity according to the selection of the material. You can also do it. Further, by forming the engaged state, it is possible to adjust the height of the bolt 3 in advance.

Therefore, unlike the conventional case, the position of the stopper 4 and the hanger 10 does not shift due to the deviation of the fastening condition or the fastening position when the nut is fastened to the bolt 3, and the protruding height of the bolt 3 is unlikely to vary. , The installation accuracy of the bolt 3 is improved.

Further, each female threaded portion 40 of the hanger 10 has the same pitch as the threaded portion 3a of the bolt 3. As a result, the engaged state can be surely performed by matching the threads and valleys of the threads with each other. As a result, the hanger 10 can be fixed to the bolt 3 more firmly, the tilting of the bolt 3 can be prevented more effectively, and the vertical standing of the bolt 3 can be effectively maintained. Therefore, the installation accuracy of the bolt 3 is further improved, and the reliability of the support unit 1 is further improved.

Further, each female thread portion 40 is formed at a position where the first notch portion 30 and the second notch portion 60 face each other in the radial direction of the bolt 3. As a result, when the hanger 10 is inserted through the bolt 3 via the first notch 30 and the second notch 60 and the main body 20 is tilted in the axial direction, each female screw portion 40 of the hanger 10 Can be securely engaged with the threaded portion 3a of the bolt 3 from the crossing direction. Therefore, when the engaged state is maintained in the process of installing the support unit 1, the hanger 10 is unlikely to fall off, and the workability and reliability of the construction related to the installation of the support unit 1 are further improved.

Further, since the second notch 60 is formed in the main body 20, a wide cavity 25 can be secured in the main body 20, so that the hanger 10 is inserted through the bolt 3 and the main body 20 is tilted in the axial direction. The work of making the work can be performed more smoothly, and the workability of the construction related to the installation of the support unit 1 is further improved. Further, the weight of the hanger 10 can be reduced.

Further, since the hanger 10 has the support portion 70, the support portion 70 is brought into contact with the bolt 3 in the radial direction in the engaged state. As a result, when the engaged state is maintained, the hanger 10 is less likely to fall off, so that the workability of the construction related to the installation of the support unit 1 is 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, after inserting the bolt 3 from the first notch 30 into the main body 20 in a posture in which the main body 20 is tilted with respect to the axial direction, the main body 20 can be tilted in the axial direction, and thus the above-mentioned engagement. The second notch 60 does not necessarily have to be formed in the hanger 10 which is the stopper 4 as long as the state can be formed. The same applies to the support portion 70.

Further, the construction procedure relating to the installation of the support unit 1 described with reference to FIGS. 8A to 8B is not strictly limited to the described one. Further, the shapes of the above-mentioned members constituting the support unit 1 and the positions of the respective parts on the hanger 10 are not necessarily strictly limited to those described above as long as the above-mentioned functions can be achieved. ..

Further, the support unit 1 and the stopper 4 are not limited to the use of suspending the ceiling frame 2, and can be applied to a wide range of support objects such as the support of cables arranged behind the ceiling.

1 Bolt support unit 2 Ceiling frame (support object)
3 Bolt 3a Male thread 4 Stopper 10 Hanger 20 Main body 21 Through hole 23 Lower wall (one end wall)
24 Side wall 30 1st notch 40 Female thread 50 Hook 60 2nd notch 70 Support

Claims (7)

Bolts with male threads and
With a stopper fixed to the bolt
The stopper includes a main body having a through hole extending in the axial direction of the bolt, a first notch portion in which the side wall of the main body forming the through hole is cut out in the axial direction, and an inner circumference of the through hole. It has a female threaded portion formed on the surface, and a hanger having a hook extending from the main body in the axial direction and for hooking and suspending a support object.
The bolt is inserted into the main body from the first notch in a posture in which the main body is tilted with respect to the axial direction, and then the main body is tilted in a direction along the axial direction with respect to the male screw portion. A bolt support unit in which the female threaded portion is engaged with the male threaded portion from an intersecting direction intersecting the screwing direction, and the hanger is supported by the bolt by maintaining the engaged state. The bolt support unit according to claim 1, wherein the female thread portion has the same thread pitch as the male thread portion. The bolt support unit according to claim 2, wherein the female thread portion is formed at a position facing the first notch portion in the radial direction of the bolt. The hanger is a second notch in which the side wall of the main body forming the through hole is cut out from a direction different from that of the first notch in the axial direction at a position facing the first notch in the radial direction. The bolt support unit according to claim 3, which has a portion. The bolt support unit according to claim 4, wherein the female thread portion is formed at a position facing the second notch portion in the radial direction of the bolt. The hanger has a support portion that protrudes in the axial direction from one end wall of the main body.
The bolt support unit according to claim 5, wherein the support portion is brought into contact with the bolt from the radial direction in the engaged state. A stopper comprising the hanger according to any one of claims 1 to 6.

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