JPH0347207Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a connecting device for connecting a support such as a lamp to a hollow support such as a street light.

[Conventional technology]

Most conventional coupling devices of this type have the other end inserted into the hollow part of one pillar, the other end inserted into the hollow part of the other pillar, and each insertion point is welded or screwed. It was hot.

[Problem to be solved]

Conventional connections by welding or screwing are laborious and difficult to remove for maintenance.

Therefore, the object of this invention is to provide a connecting device for easily and reliably connecting columns.

[Means for solving problems]

In order to achieve the above-mentioned object, this invention has a fixing means for connecting to one of the columns at one end side, a body inserted into the hollow part of the other column, and at least one of the body A tapered guide groove that approaches the center of the body as it approaches the other end or one end is formed at two locations, a screw attachment part is formed at one end of the guide groove, and a threaded rod is rotated into this screw attachment part. A nut is screwed into this threaded rod, a locking member that is housed in the guide groove is attached to the nut, and as the threaded rod rotates, the nut and locking member move along the axial direction of the threaded rod, and the nut is screwed into the threaded rod. When the locking member moves toward the base or tip of the threaded rod, the outer surface of the locking member protrudes outward from the body and comes into pressure contact with the inner surface of the hollow part of the other support. .

[Effect]

According to this invention, by rotating the threaded rod in one direction, the nut and the locking member move along the axial direction of the threaded rod. Then, when the locking member moves closer to the base end or the tip of the threaded rod, the outer surface of the locking member projects outward from the body.
The outer surface of the locking member projecting outward comes into pressure contact with the inner surface of the hollow portion of the column, thereby connecting the column and the body.

〔Example〕

Preferred embodiments of this invention will be described below with reference to the drawings.

In FIG. 1, the entire coupling device is designated by the reference numeral 1.
Most of this coupling device 1 is inserted into a hollow support 2 such as a street light. One end of the coupling device 1 has a fixing means for coupling to one of the pillars 3, that is, in the illustrated embodiment, a hook portion 4 having a tapered inner circumferential surface is formed on the one end. In addition, the parts other than the hooking part 4 of the coupling device 1 are formed in the body part 5, and at least two parts of the body part 5 have tapers that approach the center of the body part 5 as it approaches the other end side or one end side. A guide groove 6 having a shape is formed. A screw attachment portion 7 is formed at one end of the guide groove 6, and a threaded rod 8 is rotatably inserted through the screw attachment portion 7. The screw attachment part 7 is located opposite to the hook part 4.
It is formed in several places. A nut 9 is screwed into the threaded portion of the threaded rod 8, and a locking member 10 that is accommodated in the guide groove 6 is attached to the nut 9. The locking member 10 is a member formed by bending a plate material into a channel shape, as shown in FIGS. 2 and 3, and holes 11 into which the nuts 9 are fitted are formed on both sides. Nut 9 in this hole 11
As a result, the nut 9 and the locking member 10 move up and down without rotating due to the rotation of the threaded rod 8. Inner surface 10 of this locking member 10
A is formed in a tapered shape in accordance with the tapered shape of the guide groove 6. The threaded rod 8 and nut 9 are formed as shown in FIG.

In the embodiment shown in FIG. 1, the upper end side of the connecting device 1 is used as a connecting means, and in addition to the hook portion 4, a joint fitting 12 is used. This joint fitting 12 is constructed as shown in FIGS. 5 and 6. That is, a ring-shaped main body 13 has a partition wall 14 inside, and a hook member 15 is set surrounded by the partition wall 14 at positions facing each other.
Attach the screws 16 to these hook members 15 on the main body 13.
It is screwed in from the outside side. Further, the pair of hook members 15, 15 are pulled toward each other by an elastic member 17 such as a rubber band. When the screw 16 is rotated in one direction, since the hook member 15 is restricted from rotating by the partition wall 14, the screw 16 resists the tensile force of the elastic member 17.
Move to the head side. The tip of the hook member 15 engages with the inner surface of the hook 4 on the upper end side of the coupling device 1, as shown in FIG. There is no problem even if the elastic member 17 deteriorates and loses its tensile force after engagement. Note that the fixing means on one end side of the coupling device 1 may be welding or the like as in the conventional case.

FIG. 8 shows an example in which the coupling device 1 and joint 12 of this invention are used on a street light pole. In the example shown in FIG. 9, when the upper end of the pillar 3 supporting the lamp body remains hollow, it will cause trouble.
A cover 18 is shown attached to the tip of this support 3, and this cover 18 is constructed as shown in FIGS. 10 and 11. That is, this cover 18
A screw 20 is rotatably inserted into both sides of the main body 19, a nut 21 is screwed into the screw 20, a locking plate 22 is fixed to the nut 21, and a locking plate 22 is inserted between the pair of locking plates 22, 22. An elastic ring 23 such as a rubber band is attached to constantly pull the locking plates 22, 22 toward each other. By rotating the screw 20, the nut 21 and the locking plate 22 move closer to the head of the screw 20, and the locking plate 22 moves closer to the head of the screw 20.
is adapted to be engaged with the inner circumferential surface of the upper end of the support column 3. The one shown in FIG. 12 shows an application for four lamps. What is shown in Fig. 13 is the lamp body 2.
4, the ballast 25 is housed inside the lamp main body 24. Conventionally, the ballast 25 was installed on the pillar side, but it has been compactly installed inside the lamp main body 24. Summarized.

The design shown in FIG. 13 does not require a space for a stabilizer such as a stepped pole or a tapered pole, or a space for mounting it at the location of the support column, resulting in a good appearance. Furthermore, during construction, there is no need to arrange for a ballast at the site, and the construction can be completed by simply wiring the power line, making it possible to reduce the cost of on-site construction.
Furthermore, since only the power supply wiring is required, there is no possibility of incorrect wiring.
Except for the power line, the wiring is inside the lamp, which improves the waterproof performance of the wiring. Furthermore, it can also be provided at low cost as a street light.

〔effect〕

As explained above, according to this invention, it has a fixing means for connecting to one of the pillars on one end side, a body part that is inserted into the hollow part of the other pillar, and at least one of the body parts. A tapered guide groove that approaches the center of the body as it approaches the other end or one end is formed at two locations, a screw attachment part is formed at one end of the guide groove, and a threaded rod is rotated into this screw attachment part. screw the nut into this threaded rod,
A locking member that is housed in the guide groove is attached to the nut, and as the threaded rod rotates, the nut and the locking member move along the axial direction of the threaded rod, and the locking member approaches the base end or tip of the threaded rod. Since the outer surface of the locking member protrudes outward from the body and comes into pressure contact with the inner surface of the hollow part of the other support when the locking member moves, the connection with the support is easy and reliable. . Also, compared to those using screws, the appearance is good because the screw heads and holes are not exposed.
Furthermore, compared to welding means, it can be easily removed during maintenance.

[Brief explanation of the drawing]

Fig. 1 is a half sectional view showing a preferred embodiment of this invention, Fig. 2 is a partially sectional plan view, Fig. 3 is a perspective view of the locking member, and Fig. 4 is a perspective view showing the threaded rod and nut. Fig. 5 is a plan view of the joint fitting, Fig. 6 is a sectional view taken along the line shown in Fig. 5, Fig. 7 is a sectional view for explaining the state of connection between the joint and the coupling device, and Fig. 8 is a street light. FIG. 9 is a front view showing an example of using a cover to cover the opening at the upper end of the column, FIG. 10 is a plan view of the cover, and FIG. FIG. 10 is a sectional view taken along the line XI-XI, FIG. 12 is a diagram showing an example applied to a four-lamp system, and FIG. 13 is a half sectional view schematically showing the internal structure of the head body. DESCRIPTION OF SYMBOLS 1... Connection device, 2, 3... Support column, 4... Hooking part (fixing means), 5... Body part, 6... Guide groove, 7... Screw attachment part, 8... Threaded rod, 9...nut, 10...locking member.

Claims (1)

[Scope of Claim for Utility Model Registration] A device for connecting a support such as a light fixture to a hollow support such as a street light, which has a fixing means for connecting to one support at one end side, and has a fixing means for connecting to the other support. It has a body part that is inserted into the hollow part, and a tapered guide groove is formed in at least two places on this body part, and the tapered guide groove approaches the center of the body part as it approaches the other end side or one end side, and one end of this guide groove. A threaded mounting portion is formed on the side, a threaded rod is rotatably inserted into the threaded mounting portion, a nut is screwed into the threaded rod, a locking member that is accommodated in the guide groove is attached to the nut, and by rotation of the threaded rod. When the nut and the locking member move along the axial direction of the threaded rod, and the locking member moves closer to the base end or tip of the threaded rod, the outer surface of the locking member protrudes outward from the body. A column connecting device characterized in that the column is pressed against the inner surface of a hollow part of the other column.