JPH0421193Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to the improvement of a device used for installing road traffic signals, particularly pedestrian signals.

[Conventional technology]

When installing conventional appliances of this type, commonly used bolts and nuts were used to connect and tighten the various parts.

Therefore, the fixing portion between the arm and the connecting fitting is particularly susceptible to loosening because the arm vibrates or swings, often making the installation of the traffic signal unstable.

[Problem that the invention attempts to solve]

Therefore, with this invention, the connection between the arm and the connecting metal fittings can be made strong, so that it will not come loose even during long-term use, and can be removed as necessary, so that road traffic signals can be installed in a stable state over a long period of time. The present invention aims to provide a traffic light mounting device that can be obtained.

[Means for solving problems]

Therefore, in this invention, the connecting fitting that connects the band attached to the pole and the arm supporting the traffic light has a rear part that serves as a connection part to the band, and a front part that serves as a holding part that holds the arm through it. , a cut is formed at the front end of the holding part, and a bolt is passed through the holding part approximately in the center, and a groove having a U-shaped cross section is formed inside the head of the bolt, and also on the inside of the nut to be screwed into the bolt. A groove with a U-shaped cross section is formed, and both grooves engage with a convex portion with a U-shaped cross section formed on the outer surface of the holding part when tightening bolts and nuts.

[Effect]

The connection part between the arm and the connecting fitting having the above-mentioned structure is tightened and fixed with bolts and nuts, but the groove formed inside the head of the bolt and the groove formed inside the nut are connected to the connecting fitting. Since the bolts and nuts lock onto the convex portion formed on the outer surface of the bolt, there is no risk of the bolts or nuts turning in the direction of loosening.
The tightened state of the nut does not loosen, and even after long-term use, the signal can be firmly and stably installed.

Furthermore, although these bolts and nuts do not come loose at all times, if necessary, if you turn the bolt or nut strongly in the direction of loosening, the groove and the convex part are both locked in a U-shaped cross section, so the bolt or nut will loosen. can be removed by climbing over the protrusion and turning in the direction of loosening.

〔Example〕

Reference numeral 1 denotes a post, which is mounted on a road or the like, and a traffic light 6 is attached to this post 1 via a band 2, a connecting fitting 3, an arm 4, and a hanging fitting 5.

The band 2 is formed into an arcuate shape corresponding to the peripheral shape of the support column 1.

The connecting fitting 3 connects the band 2 and the arm 4 supporting the traffic light 6, and has a rear portion as a connecting portion 7 to the band 2, and a front portion as a holding portion through which the arm 4 is inserted and held. It is set at 8.

That is, the rear end surface of the connecting metal fitting 3 is fixed to the connecting metal fitting 9 which is bent into a substantially dogleg shape, and the band 2 is inserted through the hole 10 formed in the connecting part 7, and the band 2 and the connecting metal fitting are connected by bolts 11 and nuts 12. 3 is tightened and fixed.

The holding portion 8 has a shape through which the arm 4 is inserted, and has a cut 13 formed at the front end.

A bolt 14 is passed through approximately the center of the holding portion 8, and a groove 16 is formed inside the head 15 of the bolt 14, and a groove 18 is also formed inside the nut 17 that is screwed into the bolt 14.

Furthermore, a convex portion 19 is formed on the outer surface of the holding portion 8, so that both grooves 16 and 18 are engaged with the convex portion 19 when the bolt 14 and nut 17 are tightened.

In order to attach and fix the arm 4 to the connecting fitting 3, the arm 4 is first inserted into the holding part 8. At this time, a horizontal hole (not shown) is provided in the arm 4, and a bolt 14 is passed through the horizontal hole so that the arm 4 maintains an appropriate height.

When the bolt 14 and nut 17 are further tightened, the groove 16 of the bolt 14 and the groove 18 of the nut 17 are tightened.
is engaged with a convex portion 19 on the outer surface of the holding portion 8. In order to obtain such a state of engagement with the convex portion 19, it is necessary to tighten the bolt 14 and nut 17 somewhat forcefully, but once the bolt 14 and nut 17 are engaged with a strong tightening force, the bolts 14 and nuts 17 must be strongly turned in the opening direction. There is no risk of it loosening unless force is applied.

In all of the illustrated embodiments, grooves 16 and 18 having a U-shaped cross section are formed inside the head 15 of the bolt 14 and the nut 17, and the grooves 16 are connected to the holding portion 8.
The structure is such that the grooves 16 and 18 lock onto a protrusion 19 with a U-shaped cross section provided on the outside of the holder, but when the bolt 14 and nut 17 are strongly turned, the grooves 16 and 18 will close to the protrusion in both the tightening and release directions. Get over 19. Therefore, all of the above-mentioned embodiments have the above-mentioned locking structure once the bolts 14 and nuts 17 are tightened, but when the bolts 14 and nuts 17 are strongly turned in the opening direction, the bolts 14 and nuts 17 snap into the convex portions. 1
9, the tightening condition loosens and disassembly becomes possible.

[Effect of idea]

This device has the above-mentioned configuration, and therefore, the connecting fitting 3 and the arm 4 can be tightened and fixed without the risk of loosening, and can also be disassembled if necessary. The use of a device allows the signal to be installed in a stable manner over a long period of time.

[Brief explanation of drawings]

FIG. 1 is a front view showing the state of the installed traffic light. FIG. 2 is a perspective view showing the state of the band and the connecting fittings. FIG. 3 is a perspective view of the holding section. FIG. 4 is a perspective view of the holding part from the other direction. 1... Prop, 2... Band, 3... Connecting metal fittings,
4... Arm, 5... Hanging bracket, 6... Traffic light,
7... Connection part, 8... Holding part, 13... Cut,
14...Bolt, 15...Head, 16...Groove, 1
7...Nut, 18...Groove, 19...Protrusion.

Claims (1)

[Scope of utility model registration request] It is a connecting fitting that connects the band attached to the pillar and the arm supporting the traffic light.The rear part serves as the connection part to the band, and the front part serves as the holding part through which the arm is inserted and held. A cut is formed at the front end, and a bolt is passed through the holding part approximately in the center, and a groove having a U-shaped cross section is formed inside the head of the bolt, and a U-shaped cross-section is also formed inside the nut that is screwed into the bolt. A device for mounting a traffic light, characterized in that a groove is formed therein, and both grooves are engaged with a convex portion having a U-shaped cross section formed on the outer surface of the holding portion when tightening a bolt or nut.