JP3048181U - Suspension bolt - Google Patents

Abstract

(57) [Summary] [Problem] To provide a suspension bolt that can be inserted and engaged directly with a groove of a rail at a predetermined suspension position of a rail, thereby improving workability of an operator and ensuring safety. thing. SOLUTION: A suspension bolt 1 comprises a bolt 2 and a bolt 2
And a connecting member 4 for connecting to a rail screwed to the lower end of the bolt 2, and a side end 9 of the connecting member 4 is provided. It has an inverted T-shape that can be inserted into and engaged with a groove of a rail having an inverted T-shaped cross section from above.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a suspension bolt. More particularly, the present invention relates to a suspension bolt for connecting a rail for hanging down a smoke-proof hanging wall to a beam member above the ceiling.

[0002]

[Prior art]

 Conventionally, as shown in FIG. 4, a partition wall 30 used as a smoke-proof hanging wall is inserted into an opening groove 32 formed in a rail 31, and is fixed integrally with the rail 31 by a caulking material or the like. A groove 33 having an inverted T-shaped cross section is formed on the upper surface of the rail 31 along the longitudinal direction. The rail 31 is connected to a beam member 35 installed behind the ceiling by a suspension bolt 34. At the upper end of the suspension bolt 34, two nuts 36, 36 for clamping the beam member 35 are screwed, and at the lower end, a square locking plate 38 having a screw hole 37 is provided. Is screwed.

When suspending the rail 31, first, the locking plate 38 of the suspension bolt 34 is inserted into the groove 33 from the end of the rail 31 and slid to a predetermined position. At that position, the nut 36 is brought into contact with the upper and lower surfaces of the notch 39 formed in the beam member 35. Next, the suspension bolts 34 are screwed in (the locking plate 38 is formed in a square shape so as not to rotate in the groove), and the locking plate 38 is locked to the ceiling of the groove 33 and the peripheral edge of the notch 39 is formed. Is suspended with a nut 36 to complete the suspension of the rail.

[0004]

[Problems to be solved by the invention]

 In the conventional suspension bolt, since the connecting member to the rail 31 is the square-shaped locking plate 38, it is necessary to insert the rail from the end of the rail 31 and move it to the suspension position. Since this moving work is performed manually by a worker on a stepladder or a ladder, workability is a problem. In addition, when the rails are long, it is necessary to build a scaffold, and the worker must move while moving on it little by little, thus further reducing workability and leaving a problem in safety. It will be.

Further, the locking plate 38 is temporarily fixed to the suspension bolt (a state in which the locking plate 38 is slightly screwed to the lower end of the bolt) so as to be able to slide in the groove 33 of the rail 31. It may come off from the suspension bolt during sliding. At that time, the worker searches for the locking plate by hand, or looks up from the top of the rail with the scaffold raised, searches for the locking plate, and then screws the locking plate to the suspension bolt again. It requires extremely troublesome work such as having to insert

Further, since the locking plate is square (or rectangular), the locking plate is often squeezed on the side wall of the groove when moving, which causes a problem that the movement is not smooth.

Accordingly, the present invention improves the connecting member screwed to the lower end of the suspension bolt in order to eliminate the above-mentioned problem, and directly inserts and engages with the rail groove at a predetermined suspension position of the rail. An object of the present invention is to provide a suspension bolt that can not only improve the workability of the worker but also ensure the safety.

[0008]

[Means for Solving the Problems]

 The hanging bolt of the present invention is a hanging bolt for connecting a rail for a smoke-proof hanging wall having a groove of an inverted T-shaped cross section along the longitudinal direction on the upper surface and a beam member installed behind the ceiling, A bolt, a connecting member for fastening to the beam member provided on the upper end side of the bolt, and a connecting member for connecting to the rail screwed to the lower end side of the bolt. The locking portion is inserted into the groove of the rail from above and is engageable with the groove.

In addition, the suspension bolt of the present invention is a suspension bolt for connecting a rail for a smoke-proof hanging wall having a groove of an inverted T-shaped cross section along the longitudinal direction on the upper surface and a beam member installed behind the ceiling. A bolt, a coupling member for fastening to the beam member provided on the upper end side of the bolt, and a connecting member for coupling to the rail screwed to the lower end side of the bolt. The connecting member comprises a base having a screw hole, and a side end extending downward from the base and having a lower end provided with a locking portion extending in both horizontal directions, wherein the locking portion of the connecting member is It is configured so that it can be inserted into the groove of the rail from above and that it can be contacted with the ceiling of the groove when it is rotated approximately 90 degrees, and that it can be pressed against the ceiling of the groove and strongly locked by screwing in the bolt. That Features.

[0010]

[Embodiment of the invention]

 According to the suspension bolt of the present invention, the connecting member can be inserted directly into the groove from above the predetermined position of the rail. Therefore, the troublesome work of sliding from the end of the rail to a predetermined position like the conventional suspension bolt is unnecessary.

Then, if the connecting member is rotated approximately 90 degrees and a bolt is subsequently screwed in, the locking portion of the connecting member is strongly locked to the ceiling of the groove, so that the suspension bolt can be fixed to the rail. it can.

[0012] The work consisting of the two operations of the insertion rotation and the screwing described above is possible in a very short time and without any difficulty, since it is possible to use a hand gesture without any need for visual recognition.

[0013] Therefore, unlike a conventional suspension bolt, there is no need to slide the rail from the end of the rail to a predetermined position at a high place or to check the screw connection by looking into the top from above. Workability is improved and safety is ensured.

In addition, since the suspension bolt is screwed into the base of the connecting member at a position far away from the bottom of the groove, even if the bolt is loosened, the lower end of the suspension bolt is inserted into the groove. Even if the connecting member attempts to rotate, the bolt hits the edge of the ceiling of the groove and cannot be rotated as long as the bolt is inside the groove, so that the connecting member is reliably prevented from falling out of the groove. You.

Hereinafter, the suspension bolt of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a perspective view showing an embodiment of the suspension bolt of the present invention, and FIGS. 2 and 3 are explanatory views showing how the suspension bolt of FIG. 1 is attached to a rail.

In FIG. 1, the suspension bolt 1 is connected to a bolt 2 having a head and a total screw, a coupling member 3 for fastening to a beam member (not shown) on the ceiling, and a rail 12 described later. And a connecting member 4.

The coupling member 3 is composed of two nuts 5 and two washers 6 screwed to the upper end of the bolt 2. On the other hand, the connecting member 4 is screwed to the lower end of the bolt 2.

As shown in FIGS. 1 and 2, the connecting member 4 includes a base 8 having a screw hole 7 and an inverted T-shaped side end 9 extending downward from the base 8. The side end portion 9 comprises a neck portion 10 which becomes narrower downward, and a locking portion 11 which extends from the lower portion of the neck portion 10 in both horizontal directions. The connecting member 4 can be easily manufactured from a steel plate by press working.

Next, a method of assembling the suspension bolts 1 will be described with reference to FIGS.

A groove 13 having an inverted T-shaped cross section is formed along the longitudinal direction on the upper surface of the rail 12 for the smokeproof hanging wall shown in FIGS. 2 and 3. Then, the side end 9 of the connecting member 4 is inserted from above in parallel with the groove 13 (FIG. 2). Next, by rotating the connecting member 4 by approximately 90 degrees, the locking portion 11 is locked to the so-called ceiling portion in the groove 13. Subsequently, when the bolt 2 is screwed in, the lower end of the bolt 2 abuts against the bottom surface of the groove 13, and conversely, the locking portion 11 abuts against the ceiling of the groove 13 and sticks to each other (FIG. 3). Thus, the connecting member 4 is firmly fixed to the rail 12. Thereafter, the suspension bolt 1 is fastened to a beam member (not shown) by the connecting member 3. The fastening of the connecting member 3 to the beam member is omitted since it is a method of fastening with the pair of nuts 5 as in the conventional case. As a result, the rail 12 is suspended from the beam member by the suspension bolt 1.

FIG. 3A is a diagram showing the fixed state of the connecting member 4 as viewed in the direction of the groove 13 of the rail 12, and FIG. 3B is a diagram showing a side surface (partially cut away). .

As shown in FIG. 3, the screwing portion between the bolt 2 and the connecting member 4 is located at a position considerably higher than the fixing portion to the groove 13 (it is considerably higher than the conventional suspension bolt), so that Very little risk of flicker. That is, even if the bolt is loosened, the lower end of the suspension bolt is present in the groove, so that even if the connecting member tries to rotate, the bolt hits the edge of the ceiling of the groove and cannot be rotated.

The connecting member is not limited to the one punched out of a steel plate as in the present embodiment (see FIGS. 1 to 3). For example, the side end portion 9 and the locking portion 11 may be formed as separate round bars, and these may be fixed to the base portion 8 by welding or the like in an inverted T shape.

Further, since the shape of the side end 9 may be the same as the shape of the groove 13 of the rail 12, the shape is not limited to the inverted T-shape in the present embodiment. It may be plate-shaped or the like.

Furthermore, the connecting member 3 is not limited to the combination of the nut 5 and the washer 6, but may employ any conventionally known connecting means that can be clamped to the beam member.

[0027]

[Effect of the invention]

 As described above, according to the present invention, at the predetermined suspension position of the rail, the rail is directly inserted into the groove from above and can be locked, so it is necessary to move the connecting member along the groove. There is no. Therefore, there is an excellent effect that the workability of the worker is improved and safety can be secured. Even if the bolt is loose, the connecting member cannot rotate, so that the connecting member does not fall out of the groove of the rail.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a suspension bolt of the present invention.

FIG. 2 is an explanatory view showing assembling of the suspension bolt of FIG. 1 to a rail.

FIG. 3 is an explanatory view showing assembling of the suspension bolt of FIG. 1 to a rail.

FIG. 4 is an explanatory view showing how a conventional suspension bolt is attached to a rail.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hanging bolt 2 Bolt 3 Connecting member 4 Connecting member 7 Screw hole 8 Base 9 Side end 10 Neck 11 Locking part 12 Rail 13 Groove

Claims (2)

[Utility model registration claims] 1. A hanging bolt for connecting a rail for a smoke-proof hanging wall having a groove having an inverted T-shaped cross section along the longitudinal direction on an upper surface thereof and a beam member installed behind a ceiling, comprising: A connecting member for fastening to the beam member provided on the upper end side of the bolt, and a connecting member for connecting to the rail screwed to the lower end side of the bolt, the locking of the connecting member A hanging bolt having a portion inserted into the groove of the rail from above and engageable with the groove. 2. A hanging bolt for connecting a rail for a smoke-proof hanging wall having a groove having an inverted T-shaped cross section along the longitudinal direction on an upper surface thereof and a beam member installed behind a ceiling, comprising: A connecting member for fastening to the beam member provided on the upper end side of the bolt, and a connecting member for connecting to the rail screwed to the lower end side of the bolt, wherein the connecting member has a screw hole. And a side end extending downward from the base and having a locking portion extending in both horizontal directions at the lower end. The locking portion of the connecting member can be inserted into the groove of the rail from above. A hanging bolt that is configured to be able to abut against the ceiling of the groove when it is rotated by approximately 90 degrees and that the screw is further screwed into the ceiling of the groove to be strongly locked.