JPS6011233Y2 - Joist support fittings - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a joist support metal fitting for installing a joist used for receiving floorboards of a building on a concrete floor surface.

A foundation plate fixed to the concrete floor as a conventional joist support metal fitting, a pair of bolts installed at both ends on the longitudinal center line of this foundation plate, and a pair of bolts installed at both ends corresponding to the erected positions of the bolts. It consists of a joist receiving plate having a bolt insertion hole and a U-shaped metal fitting fixed to the center of the joist receiving plate, and the joist receiving plate is attached by inserting the bolt into the bolt insertion hole and screwing the nut onto the bolt. At the same time, a joist is fitted inside the U-shaped fitting, a pin is connected to a through hole drilled in the center of the upper end of both side walls, and the tip of the pin protrudes from the side wall is screwed into place. There was one in which the joist was fixed by tightening the nuts.

However, in the above-mentioned conventional joist support fittings, the extension line of the pin axis coincides with the bolt axis, so if the pin position is lower than the top of the bolt, the bolt will get in the way when tightening the nut. Therefore, the normally used tightening tools could not sufficiently tighten, and the tightening work required time and effort.

The present invention was developed in view of the above points, and by installing bolts upright at positions offset to the other side from the longitudinal center line of the foundation board, it is possible to use a tightening tool for nuts when fixing joists. To provide a joist support fitting that can prevent the joists from being obstructed by bolts and efficiently perform the above work.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below based on embodiments of a joist support fitting shown in the accompanying drawings.

As shown in FIG. 1, the base plate 1 of the joist support metal plate is made of a rectangular metal plate, and a pair of nail holes 3 for driving concrete nails 2 are provided at both ends of the metal plate in the longitudinal direction.
are drilled in each.

A pair of bolts 4 and 4' are erected on the inside of the nail hole 3 at positions offset to the other side from the longitudinal centerline of the base plate 1.

The degree to which these bolts 4 and 4' are biased is 4.4'
The head of each base plate 1 does not touch the longitudinal center line of the base plate 1.

The bolts 4.4' are fixed to the base plate 1 by welding or the like at the upper surface thereof, but may be erected on the base plate 1 by other suitable means.

Above the foundation plate 1, there is a joist 5 shown in FIG.
A joist receiving plate 6 for receiving the joist is provided so as to be movable up and down.

This joist receiving plate 6 is made of a metal plate with a concave bottom surface 7 formed in the center and having a sloping protrusion that is approximately the same as that of the base plate 1, and has two ends at both ends corresponding to the upright positions of the bolts 4 and 4'. A bolt insertion hole 8°8' is bored.

It is particularly desirable that the bolt insertion holes 8° 8' be formed in the shape of an elongated hole, and by forming them in the shape of an elongated hole, the base plate 1 can be fixed on the locally uneven surface of the concrete floor surface 16. The joist receiving plate 6 can be held horizontally even when

The joist receiving plate 6 is fixed by tightening two upper and lower nuts 9, 9' screwed onto bolts 4, 4' with the joist receiving plate 6 in between.

In addition, the concave bottom surface 7 formed in the center of the joist receiving plate 6 has a joist 5
The bottom surface of the 0-shaped metal fitting 10 for fixing is fixed by means such as welding.

The width of the side walls 11, 11' of this O-shaped fitting 10 is approximately the same as the slope of the joist receiving plate 6.

Further, the width between the side walls 11 and 11' is formed to be slightly wider than the width of the joists 5, and the inner and bottom surfaces of the side walls 11 and 11' are covered with an elastic material 12 such as rubber.

Furthermore, through holes 13, 13' are bored at the center of the upper ends of both side walls 11, 11' of the 0-shaped metal fitting 10, and the through holes 13, 13' are provided with holes 13, 13' in which the one side wall 11 of the 0-shaped metal fitting 10 is inserted. A pin 14 having a head is communicated from the outside, and a nut 15 is screwed onto the tip of the pin 14 which projects outward from the other side wall 11' of the U-shaped metal fitting.

In order to fix the joist 5 using the joist support metal fittings having the above configuration, as shown in FIG. Insert and secure.

Next, the joist receiving plate 6 is moved up and down to set the approximate height position and level, and the joist receiving plate 6 is fixed with the upper and lower nuts 9 and 9' screwed into the bolts 4 and 4'.

Next, with the pin 14 removed, the joist 5 is inserted into the O-shaped fitting 10 and brought into contact with the elastic material 12 inside the O-shaped fitting 10.

Next, insert the pin 14 into the through hole 13 provided in the O-shaped fitting 10.
The joist 5 is fixed by tightening the upper portions of both side walls of the O-shaped fitting 10 by means of nuts 15 which communicate with the bolt 13' and are screwed onto the tips of the pins 14.

During this tightening, the tightening tool is not obstructed by the bolt 4', so the tightening work can be carried out smoothly.

Furthermore, the height position of the joist receiving plate is finely adjusted as necessary.

Since the present invention is configured as described above, the nut tightening tool is not obstructed by the bolt when fixing the joist to the joist support fitting, and the work of fixing the joist can be carried out efficiently. Since the nuts can be sufficiently tightened, there is no risk of the joists coming loose after construction.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of a joist support fitting according to the present invention;
FIG. 2 is a perspective view showing a state in which a joist is supported by a joist support fitting according to the present invention that is installed and fixed on a concrete floor surface. 1...Foundation plate, 4,4'...Bolt,
5...joist, 6...joist receiving plate, 8,8
'... Bolt insertion hole, 10... U-shaped fitting, 14... Pin, 16... Curved concrete floor surface.

Claims (1)

[Scope of utility model registration request] A foundation plate 1 fixed to a concrete floor surface 16, a pair of bolts 4 erected at both longitudinal ends of this foundation plate 1,
4', and a joist receiving plate 6 having bolt insertion holes 8, 8' at both ends corresponding to the upright positions of the bolts 4, 4', and formed so that the joist 5 can be supported at the center. It consists of
Insert the bolts 4 and 4' into the bolt insertion holes 8 and 8 of the joist receiving plate 6.
The joist 5 fixed on the joist receiving plate 6 is held at an appropriate height by inserting it into the joist receiving plate 6 and holding the joist receiving plate 6 by the upper and lower nuts 9.9' which are inserted into the holes 4.4' and screwed into the above-mentioned poles 4.4'. In the joist support metal fittings that are supported by the above pair of poles) 4, 4
A joist support metal fitting characterized in that the metal joists are erected at positions offset to the other side from the longitudinal center line of the base plate 1.