JPS632487Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a mounting device for mounting road sign boards, etc. to pillars.

(Prior Art) Conventionally, as a device to be attached to a support such as a road sign board, for example, Japanese Utility Model Publication No. 42626/1983, Publication of Utility Model Publication No. 55-
There is something like Publication No. 12219.

(Problem to be Solved by the Invention) However, in all of the above-mentioned conventional sign attachment devices, the protrusions provided facing each other on the inside of each tip of the pair of semicircular strut tightening bands are simply arranged in a substantially horizontal position. Since the protrusions were only formed to protrude inward, the tips of the protrusions abutted against each other when tightening the bolt, and when the tightening force was increased in the final stage of the tightening work, the strut tightening band The bolt head and nut abutment surface are curved, making it unstable to tighten the bolts and nuts.As a result, the bolts and nuts cannot be tightened firmly, and the bolts naturally loosen and fall off after tightening. In addition, there was a problem in that bolts and nuts could not be securely tightened with the most appropriate tightening pressure in each case depending on the change in the diameter of the support.

The present invention solves the above problem, and in the final stage of the tightening work, the tips of each tightening pressure adjusting protrusion collide with each other, and when the tightening force increases, the component force induced in the tightening pressure adjusting protrusion is applied. Each of the tightening pressure adjusting protrusions buckles and is adjusted to a constant tightening pressure by plasticity, so that bolts and nuts can be tightened stably and firmly,
For use on supports such as road sign boards, which prevents bolts from falling off after tightening and allows bolts and nuts to be securely tightened with the most appropriate tightening pressure in each case according to changes in the diameter of the support. The object is to provide a mounting device.

(Means for Solving the Problems) In order to solve the above problems, the present invention attaches each proximal hook portion of a pair of semicircular strut tightening bands to the protruding surface portion of a mounting plate fixed to the back surface of a road sign board, etc. At the same time, the tightening band is clamped and fixed to the column tightened by the bolt whose head lower edge and side edge are fitted into the bolt head fitting groove formed on the outer surface of each tip of the column tightening band. In the mounting device, buckleable tightening pressure adjusting protrusions are formed on the inner side of the distal end of each of the strut tightening bands and projecting from the base end to the distal end, with the inner surface facing at a predetermined angle. It is composed of

(Function) When installing the sign board 2, attach it to the support post 1.
As shown in FIG.
e and bolt insertion holes 4 of the tightening parts 4a, 5a.
Insert the bolt 6 through the bolts 6 and 5b, and insert the head 7 of the bolt 6 into the bolt head fitting groove 4 on the outer surface of the tightening part.
It is installed by tightening the nut 8 in a state where it is fitted to either one of c and 5c.

(Example) In Figs. 1 to 6, 1 is a post, 2 is a road sign plate made of light metal such as aluminum, and a mounting plate 3 made of extruded light metal such as aluminum is fixed to the back side of the plate. Several sets of square holes 3b are bored at predetermined intervals. As shown in FIG.
In addition, a protrusion 3'' may be provided on the inner surface of the bottom plate. In this case, the square hole 3b will be in the shape of a notch. 4 and 5 are semicircular strut tightening bands made of extruded light metal such as aluminum. Bolt insertion holes 4b, 5b are provided in each tip tightening part 4a, 5a, and bolt head fitting grooves 4c, 5 are provided on the outer surface thereof.
c, and furthermore, buckleable tightening pressure adjustment protrusions 4d, 5d are provided on the inner side of each tip of the tightening portions 4a, 5a, and have tapered buckleable tightening pressure adjusting protrusions 4d, 5d whose inner surfaces are inclined at a predetermined angle from the inner end toward the tip. Each is formed with opposing protrusions.
Reference numerals 4e and 5e denote hooks at the proximal ends of the strut tightening bands 4 and 5. Insert the hooks 4e and 5e into the back surface of the opposite edge of the square hole 3b so that their tips are in contact with the back surface, and then The upper end of the opposite edge of the square hole 3b that is engaged with is the hook part 4e, 5e of the strut tightening band 4, 5.
It is locked to locking protrusions 4f and 5f provided on the upper inner surface.
6 is a bolt, 7 is its head, 8 is a nut, and 9 is a washer.

(Effects) As explained above, according to the present invention, each base end hook of a pair of semicircular strut tightening bands is engaged with the protruding surface of a mounting plate fixed to the back surface of a road sign board, etc. In a mounting device in which a tightening band is clamped and fixed to a column tightened with bolts whose head lower edges and side edges are fitted into bolt head fitting grooves formed on the outer surface of each tip of the column tightening band, Each of the above-mentioned strut tightening bands has buckling tightening pressure adjusting protrusions facing each other and protrudes from the base end to the distal end, with the inner surface facing at a predetermined angle. When tightening a tightening band to a column with bolts or nuts, the tips of the tapered buckling pressure adjustment protrusions collide with each other at the final stage of the tightening process, and the tightening force increases. When the force increases, each tightening pressure adjusting protrusion causes buckling due to the component force induced in each of the tightening pressure adjusting protrusions, and the tightening pressure is adjusted to a constant level due to plasticity, and the tightening force is not tightened like a conventional simple protrusion. When the force increases, the bolt head and nut contacting surface of the strut tightening band do not curve and the tightening of the bolts and nuts becomes unstable, and as a result, the bolts and nuts can be tightened firmly. It is possible to reliably prevent bolts from loosening and falling off after tightening, and it is also possible to tighten bolts and nuts with the most appropriate tightening pressure in each case according to changes in the diameter of the support. This has the effect of making it possible to tighten firmly.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which Fig. 1 is a side view showing the installed state, Fig. 2 is a perspective view of the mounting member, Fig. 3 is a sectional view showing the mounted state, and Fig. 4 is a support column. FIG. 5 is a cross-sectional view showing the state in which the tightening band is locked to the mounting plate; FIG. 5 is a perspective view of another embodiment of the mounting plate; FIG.
The figure is a perspective view of another embodiment of the strut tightening band. 1... Support column, 2... Road sign board made of light metal such as aluminum,
3...Mounting plate, 3a...Protruding surface portion, 3b...Square hole,
3'... Cut groove, 3''... Protruding part, 4, 5... Semicircular strut tightening band, 4a, 5a... Tip tightening part, 4b, 5
b... Bolt insertion hole, 4c, 5c... Bolt head fitting groove, 4d, 5d... Tightening pressure adjustment protrusion, 4e, 5
e... Base end hook portion, 4f, 5f... Locking protrusion, 6... Bolt, 7... Head, 8... Nut, 9... Washer.

Claims (1)

[Scope of utility model registration request] The proximal end hooks of a pair of semicircular strut tightening bands are engaged with the protruding surface of a mounting plate fixed to the back side of a road sign board, etc., and the bolt heads formed on the outer surface of each tip of the strut tightening bands are engaged. In a mounting device that clamps and fixes a tightening band to a column that is tightened with a bolt whose lower edge and side edge of the head are fitted into a groove for fitting the column, a bolt is attached to the inner side of the tip of each column tightening band from the base end to the tip. A mounting device for mounting on a support such as a road sign board, which has tapered buckleable tightening pressure adjustment protrusions facing each other and having an inclined surface at a predetermined angle on the inner surface.