JPH053530Y2 - - Google Patents

Description

[Detailed explanation of the invention] a. Purpose of the invention (industrial field of application) The road studs according to this invention are installed, for example, along the center line of the road, and reflect car lights at night so that they can be seen by drivers. Used to clearly indicate the center line.

(Prior Art) It is widely practiced to install road studs equipped with glass bulbs called "cats'eyes" along the center line of paved roads.

9 and 10 show road studs that have been widely used in the past. Each of the front surface 3 and rear surface 4 of the bank-like portion 2 formed at the center of the upper surface of the substrate portion 1 has a plurality of pieces (four pieces in the illustrated example, a total of eight pieces),
It is equipped with glass bulbs 5, 5 called cat's eyes. On the other hand, a leg piece 7 having a circular cross section and having a constricted part 6 at the lower end is provided at the center of the lower surface of the base plate part 1 . The thus formed road stud is installed at the center line of the road so that the side edges 1a, 1a of the base plate 1 are parallel to the road. That is, the leg pieces 7 are inserted into holes drilled at regular intervals along the center line of the road.
is inserted into the hole, and mortar or adhesive is injected into the hole to prevent the leg piece 7 from slipping out of the hole.

(Problems to be Solved by the Invention) However, the conventional road studs constructed and installed as described above have the following disadvantages.

That is, since the cross-sectional shape of the leg piece 7 for installing and fixing the road stud on the road surface is circular, the road stud can rotate around this leg piece 7, and the tires of a car traveling on the road can be rotated on the road surface. If you run over a road stud, this road stud will rotate and the glass bulb 5,
5 changes direction, and the function of displaying the position of the center line at night becomes insufficient. In particular, when installing road studs on an existing road that has not been newly opened, the road cannot be closed to traffic for a long time, so vehicle traffic must be resumed before the mortar and adhesive harden. , the orientation of the glass bulb is easy to change.

Furthermore, in snowy regions, snowplows are used to remove snow from roads during the winter, but road studs protruding from the road surface become a hindrance to the snow removal work. However, since conventional road studs cannot be removed once they have been installed, the road studs are often damaged when snow removal operations are carried out with the road studs in place.

The road stud of the present invention solves the above-mentioned disadvantages.

b. Structure of the invention (Means for solving the problem) The road tack of the invention consists of a tack main body 8 as shown in Figs. 2 to 4 and a buried piece 9 as shown in Figs. 5 to 8. As shown in FIG. 1, they are connected by bolts 10.

The tack body 8 made of synthetic resin, aluminum, hard rubber, etc. has a bank-like part 2 in the center of the base plate 1, similar to the conventional road tack shown in FIGS. 9 and 10.
A plurality of glass bulbs 5, 5 are respectively mounted on at least one of the front surface 3 and rear surface 4 of this bank-shaped portion 2 as reflecting means. Substrate part 1
An engaging convex portion 11 having a non-circular (+-shaped in the illustrated example) cross-sectional shape is formed at the center of the lower surface of the connector. The lower end of the through hole 13, which vertically passes through the center of the stud body 8, opens at the lower surface of this engaging convex portion 11, and the upper end opens at the center of the bottom surface of the recess 12 formed at the center of the upper surface of the bank-shaped portion 2. ing.

On the other hand, the buried piece 9 made by casting aluminum or the like is provided with an engaging cylindrical part 14 on the upper part into which the engaging convex part on the lower surface of the rivet main body can be fitted without rattling.
The upper end of the screw hole 15 is opened at the center of the bottom surface of the engaging cylinder portion 14 . Of the outer peripheral surface of the buried piece 9,
The cross-sectional shape of at least the portion below the engaging cylinder portion 14 is non-circular, and a fin-like portion 16 that projects outward is formed at the lower end.

(Function) The rivet main body 8 and the buried piece 9 configured as described above are connected to the engaging protrusion 1 on the lower surface of the rivet main body as shown in FIG.
Bolt 1 is inserted into the engaging cylinder part 14 at the upper end of the buried piece and inserted through the through hole 13 in the center of the rivet body from above.
0 is screwed into the screw hole 15 of the embedded piece 9 and tightened, and both members 8 and 9 are integrally connected for use.

As shown in Fig. 1, the road tack of the present invention, which is made up of a tack body 8 and a buried piece 9, can be dug into the road in the same way as the conventional road tack shown in Figs. 9 and 10. The buried piece 9 is inserted into the hole, and mortar or adhesive is injected into the hole to install and fix it on the road surface. Since the cross-sectional shape of the outer periphery of the buried piece 9 is non-circular, after the mortar and adhesive have hardened, the buried piece 9 is engaged with the buried piece 9 by the non-circular engagement protrusion 11 without rotating. The mated stud body 8 also does not rotate. In addition, when installing road studs on an existing road, first insert only the buried piece 9 into a hole dug in the road, inject mortar or adhesive into this hole,
After this mortar etc. hardens, the stud body 8 is attached to this buried piece 9.
Work to fix it. Therefore, there is no part protruding from the road surface before the mortar or the like hardens, and even if the vehicle's tongue passes over the buried piece 9, the buried piece 9 will not rotate.

In winter, the rivet body 8 can be removed from the buried piece 9 by loosening the bolt 10 fixing the rivet body 8 to the buried piece 9. In addition, although 17 is a spacer in FIG. 1, such a spacer may be omitted.

In addition, in a structure like the conventional example shown in FIG. 10, providing a flat part on the side surface of the leg piece 7 to prevent the leg piece 7 from rotating when the stud is installed on the road surface is as follows.
In Japanese Patent Application Laid-open No. 52-138328, a road tack with separate tack body and buried piece is described in the microfilm of Utility Model Application No. 57-61579 (Utility Model Application No. 58-165015). However, in the former, the leg piece and the stud body are integrated, and in the latter, the leg piece has a structure in which two leg rods are connected by a connecting piece, and these are different from the road stud of the present invention. It is.

c. Effects of the invention The road studs of the invention are constructed and function as described above, but they do not rotate even if a vehicle tire runs over them, and in winter, the main body of the studs that protrudes from the road surface can be removed. Because it can be placed in the snow, it will not get in the way of snow removal work or be damaged during snow removal work.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional view of the road stud of the present invention, Fig. 2 is a plan view of the tack body, Fig. 3 is a front view thereof, Fig. 4 is a sectional view taken along line A-A in Fig. 3, and Fig. 5. is a side view of the buried piece, FIG. 6 is a sectional view taken along the line B-B in FIG. 5, FIG. 7 is a sectional view taken along the line C-C, FIG. A plan view of the rivet, and FIG. 10 is a front view thereof. DESCRIPTION OF SYMBOLS 1... Substrate part, 1a... Side edge, 2... Bank-shaped part, 3... Front surface, 4... Rear surface, 5... Glass bulb,
6... Constriction, 7... Leg piece, 8... Stud body, 9
... Buried piece, 10 ... Bolt, 11 ... Engagement convex part, 12 ... Recessed part, 13 ... Through hole, 14 ... Engagement cylinder part, 15 ... Screw hole, 16 ... Fin-shaped part, 1
7...Spacer.

Claims (1)

[Scope of utility model registration request] A separate stud body 8 and a short rod-shaped buried piece 9
and a single bolt 10, the stud body 8 is provided with a reflecting means on at least one of the front and rear surfaces of the bank-shaped part 2 provided at the center of the upper surface of the base plate part 1, A vertical through hole 13 is formed through one engaging protrusion 11 having a non-circular cross section provided at the center of the lower surface, and the buried piece 9 has a vertical through hole 13 that passes through the engaging protrusion 11 at the upper end. It has an engaging cylindrical portion 14 that is fitted inside the engaging cylindrical portion 14, and a screw hole 15 with an open upper end is provided in the center of the bottom inside the engaging cylindrical portion. The cross-sectional shape is non-circular, and a fin-like part 16 is provided at the lower end to protrude outward.The bolt 10 is inserted from above into a through hole 13 in the center of the rivet body, and is inserted into a screw hole 15 in the buried piece. A road tack that connects a tack body 8 and a buried piece 9 by screwing together.