JPS624084Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is mainly for fixing metal or wooden rafters to the main building material, which are arranged perpendicularly to the main building material in advance, when horizontally roofing the roof surface with metal roofing sheets. This relates to bolts used in rafter bands.

Conventionally, this type of bolt B has been used to secure the rafter band F, which is used to fix the rafter R to the purlin material P, to the purlin material P, as shown in Fig. 1. . In this case, the roofing board N etc. is connected to the rafter band F through the bolt B.
Therefore, between the rafters R, which are fixed perpendicularly to the main building material P, they are laid from the lower end of the rafter R toward the ridge of the roof, with the center position of the longitudinal direction of the main building material P as a reference.

However, after several years have passed since the roofing boards N, etc. have been laid, they may become deformed by bending or partially shrinking due to the heat received from metal roofs such as galvanized iron, or may become deformed by a few millimeters from when they were first laid. Due to misalignment, the rafters R may shift from the across position, or the main building material P
There were defects such as the product slipping off the top. Particularly on the roofs of large buildings with large roof areas, gymnasiums, etc., the number of sheathing boards N used is very large, so the deviation of one shedding board N will cause the misalignment of other shedding boards N. In addition to the thermal insulation effect of metal roofs, there are also major problems in terms of durability, and this problem is particularly severe when the roof is steeply sloped. That's where it was.

The present invention eliminates the above-mentioned drawbacks and maintains the function of the bolt body for fixing the rafters to the main building material by fixing the rafter band to the main building material in the conventional manner, while also making it suitable for attaching roofing boards, etc. It is an object of the present invention to provide a bolt for rafter bands that can be installed accurately at a low cost.

That is, in the present invention, the roofing board 10 is attached to the bolt head 2.
This is a bolt for a rafter band that has a protruding pointed part 3 having a required height for locking.

Hereinafter, the present invention will be described in detail based on Examples.

2 and 3 are a front view and a plan view of the first embodiment. In the figure, 1 is a bolt made of iron or other metal, and 2 is the head of the bolt 1. The bolt head 2 is provided with a conical pointed portion 3 protruding from the bolt head 2, and this pointed portion is formed at a required height on the inner periphery at a small distance S from the bolt head outer periphery 4 as shown in FIG. It may be provided in a protruding manner while maintaining the length H, or it may be provided in a protruding manner directly from the outer periphery 4 of the bolt head without separating a small distance S from the outer circumference 4 of the bolt head, as shown in FIG. Further, the tip 5 of the sharpened portion 3
may be formed sharply as shown in FIG. 2, or may be slightly rounded as shown in FIG. 4 in order to maintain safety during operation. 6 is a threaded portion of the bolt 1.

5 and 6 are a partial perspective view and an A-A sectional view thereof showing the installation state of the first embodiment, in which a metal The rafters 8 are fixed to the purlin material 7 by attaching the rafter band 9 so as to be positioned on the longitudinal center line of the purlin material 7 and tightening the bolts 1 to the purlin material 7.

The sharpened portion 3 of the rafter band bolt 1 is formed for the purpose of being inserted into a shedding board 10, etc., which will be described later, and its height H can be arbitrarily changed depending on the type of shedding board 10, etc. It is also possible. Moreover, the length and thickness of the rafter band bolt 1 itself also depend on the type of the purlin material 7 and the rafter 8.
It is also possible to change it appropriately.

FIGS. 7 and 8 are a front view and a plan view of a second embodiment of the present invention, in which the locking sharp part 3 based on the bolt head 2 is formed into a quadrangular pyramid shape. It is something. The locking sharp portion 3 is not limited to the shape of a quadrangular pyramid, but may be, for example, a triangular pyramid, a pentagonal pyramid, or a hexagonal pyramid.

9 and 10 are a front view and a plan view of a third embodiment of the present invention, in which the locking sharp portion 3
is formed to have an approximately nail tip shape. This is also intended to be used when the material of the roofing board 10, etc. to be locked is hard, and if the locking point 3 has a conical or pyramidal shape, it is difficult to insert it into the roofing board 10, etc. It was formed.

FIG. 11 is a perspective view showing another installation state of the first embodiment, in which the rafter 8 is mounted on the main building material 7, and a rafter band 9 and a total of four rafter band bolts 1 are attached.
It was fixed by This is for the purpose of arranging one sheathing board 10 etc. so that the joint with the other shedding board 10' etc. is properly located at the center position in the longitudinal direction of the band 9. First, Align one sheath board 10 with the center position of the rafter band 9 and insert it into the upper locking sharp part 3, then align the other sheath board 10' with the center position of the rafter band 9 and insert it into the lower locking point. It is designed so that it can be inserted into the sharpened portion 3.

FIG. 12 is a partial perspective view showing the state of use of the first embodiment, in which the shedding boards 10 are stretched between rafters 88 fixed on the main building material 7 with rafter bands 9 at required intervals. However, at this time, the field board 10
The locking sharp part 3 can be stuck into the roofing board 10 etc. by hitting it from above.

The present invention has the above-mentioned configuration, and by protruding the locking sharpened part 3 of the required height H from the head 2 of the bolt 1, in addition to the original fastening function of the bolt, It is now possible to accurately pierce or lock the material with the sharp point 3, and the base material such as the sheathing board 10 on the roof etc. will not slip off even after a long period of time, which often occurs in the past. This made it possible to completely prevent the underlying material from shifting.

Moreover, even if there is a slight deviation in the dimensions of the base material, each piece can be fixed securely, so there is no need to ensure strict dimensional accuracy of the base material when passing the base material as in the past, making work easier. It can also promote simplification and efficiency.

In addition, by giving the tip 5 of the locking sharp part 3 a slight roundness, it is possible to prevent damage to fingers and palms and damage to clothes during work, and to ensure safety in handling. , can be provided at low cost, and has many excellent effects such as not using other parts for preventing displacement such as roofing boards.

[Brief explanation of the drawing]

Fig. 1 is a partial perspective view showing the installation state of a rafter band bolt in the prior art, Fig. 2 is a front view of a first embodiment of the rafter band bolt according to the present invention, and Fig. 3 is a plan view of the same. , FIG. 4 is a plan view of a modification of the first embodiment, FIG. 5 is a partial perspective view showing the installed state of the first embodiment, FIG. 6 is a sectional view taken along line A-A of the same, and FIG. 8 is a front view of the second embodiment, FIG. 9 is a front view of the third embodiment, and FIG.
Fig. 0 is a plan view of the same as above, Fig. 11 is a partial perspective view showing another installation state of the first embodiment, and Fig. 12 is a plan view of the first embodiment.
FIG. 3 is a partial perspective view showing the usage state of the embodiment. DESCRIPTION OF SYMBOLS 1... Bolt for rafter band, 2... Bolt head, 3... Pointed part for locking, 4... Outer circumference of bolt head, 5... Tip of sharp part for locking, 6... Bolt screw part, 7 ...Main building materials, 8...Rafters, 9...Rafter bands, 10,10'...Shell boards.

Claims (1)

[Claims for Utility Model Registration] (1) A bolt for a rafter band, characterized in that a bolt head 2 is provided with a protruding pointed portion 3 having a required height for locking roofing boards 10, etc. (2) The bolt for a rafter band according to claim 1, in which the pointed portion 3 has a conical shape. (3) The rafter band bolt according to claim 1, in which the sharpened portion 3 has a conical shape. (4) The rafter band bolt according to claim 1, wherein the sharpened portion 3 has a pyramidal shape. (5) The rafter band bolt according to claim 1, in which the pointed portion 3 has a nail tip shape.