JPS6037773Y2 - conductive telescopic strut - Google Patents

Description

[Detailed explanation of the idea]

FIELD OF INDUSTRIAL APPLICATION The present invention relates to a conductive telescoping pole that is used for, for example, a tabletop microphone, a desk lamp, etc., and has a built-in power supply cord and expands and contracts so that its height can be adjusted.

[Conventional technology]

If a vinyl cord is simply inserted into the telescopic pole of the support column, the cord may become sagging and get caught in the base end of the inner pole, or it may rub against the inner wall of the inner pole, causing the vinyl coating to tear. Furthermore, various problems such as twisting of the cord occur.

[Problem that the invention attempts to solve]

To prevent this, some cords are wound spirally to give them elasticity, or a coil spring is inserted inside to constantly apply tension to prevent the cord from sagging.
In this case, the sliding force during stretching and the subsequent holding force increase, making it difficult to adjust the tension to prevent the fragile cord from stretching.

[Means to solve the problem]

The present invention was developed in view of the above circumstances, and is provided with a roll holder inside the outside pole of the telescoping pole so that the roll can be moved up and down so that it can be transferred, and a mechanism inside the inside pole for lifting the roll. A guide plate having a claw cord insertion hole is provided, the cord is placed along one side of the guide plate, and the cord is placed so as to pass through the cord insertion hole and hang on the roll.
When extending or contracting the pole, stretch the cord while pulling up the roll,
Alternatively, the present invention provides a conductive telescoping column in which the roll is pressed down and the cord is folded at the roll and the cord insertion hole so that the cord can be stretched without being pulled, and furthermore, can be contracted without sagging.

【Example】

Hereinafter, one embodiment of the present invention will be specifically described with reference to the drawings. In the figure, reference numeral 1 indicates a two-stage telescoping pole as a telescoping support column.A small-diameter inner pole 1b is placed inside and above a large-diameter outer pole 1a, and is configured to be extendable and retractable by fitting into the dog. paul la. The inner pole 1b is made of strong metal because it is repeatedly expanded and contracted, and a heavy object such as a microphone is attached to the upper end of the inner pole 1b. The upper end of the outer pole 1a is connected to the inner pole 1b by the aperture 3.
The proximal end fitting 4 is fixed to the proximal end by caulking. A sliding spring 5 is attached to the outside of the base end of the inner pole 1b, and by sandwiching this sliding spring 5 with the outer pole 1a, the inner pole 1b slides smoothly during expansion and contraction, and is held fixed in any expansion and contraction state. The tip metal fitting 6 is fixed to the tip by similar caulking. Then, such a telescopic pole 1 is erected vertically with the proximal end of the outer pole 1a fixed to a base, and the inner pole 1b
It is used by attaching a microphone or the like to the end fitting 6 of the holder. Further, a roll holder 8 having a roll 7 is installed vertically inside the outside pole 1a, and a guide plate 9 is installed close to the side of the roll 7 inside the inside pole 1b. As shown in FIG. 3, the roll holder 8 has two sets of bearing parts 10 made up of two leaf springs 10a and 10b, which are arranged side by side with their lower ends fixed to the outer pole proximal metal fitting 4. The bearing part 10 is configured to elastically hold the shaft part 7a of the shaft part 7a and move up and down in a removable manner, and a stopper part 10c having approximately the same diameter as the shaft part 7a is formed at the tip of the bearing part 10. The guide plate 9 has a fork-shaped roll pulling claw 11 at the lower end, and by inserting this claw 11 under the roll 7 inside the bearing part 10 of the roll holder 8, the roll 7 can be pulled when the pole is extended. The pawls 11 and the bearing 10 interfere with each other to prevent the poles la and lb from rotating. A cord insertion hole 12 is drilled in the guide plate 9 at a position slightly above the roll pulling claw 11, and a flexible cord 13 is inserted into the telescopic pole 1 with both ends fixed to the metal fittings 4.6 and inserted into the inner pole 1b. Now, insert the roll 7 along the side 9a of the guide plate 9 opposite to the roll 7, and pass it through the cord insertion hole 12.
It is installed over the Since the present invention has such a structure, when the pole is extended, the guide plate 9 and the roll pulling claw 11 move upward together with the inner pole 1b, and the roll 7 is pulled up by the claw 11. When the roll 7 is fully extended as shown in FIG. It bends into a crank shape and reaches its most extended state. Next, when the inner pole 1b is retracted, the roll pulling claw 11 separates from the roll 7 and descends in advance of it, as shown in FIG. On the other hand, since the position of the cord insertion hole 12 is lowered together with the guide plate 9, the cord 13 is wound above the roll 7.
Furthermore, the wound cord 13 pushes down the roll 7, and in this way, the cord 13 is folded into three and shortened at the roll 7 and the cord insertion hole 12 without sagging. . Note that the present invention is not limited to such an embodiment, and for example, the portion of the cord attached along the guide plate 9 may be printed and wired on the guide plate 9.

[Effect of the idea]

As described above, according to the present invention, when the cord 13 is inserted into the telescopic pole 1 when the pole is extended or contracted, the cord 13 is connected to the roll 7 that moves up and down.
and the guide plate 9, and as a result of their action, the cord stretches without excessive tension, and is folded and contracted without sagging, eliminating problems such as cord entanglement, jamming, and disconnection. In addition, the roll 7 acts like a pulley, and when the pole is contracted,
Since the cord 13 is smoothly bent to change direction, the expansion and contraction operation is smooth, and the cord 13 itself is less likely to be damaged.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view showing one embodiment of the conductive telescoping column according to the present invention, Fig. 2 is a cross-sectional view of the main parts showing its operating state, and Fig. 3
The figure is a divided perspective view of main parts. 1...Telescopic pole, 1a...Outer pole, 1b...Inner pole, 3...Aperture, 4...Base end fitting, 5...Sliding spring,
6...Tip metal fitting, 7...Roll, end...
... Mountain holder, 9 ... Guide plate, 10.
...Bearing part, 11...Tail pulling claw,
12...Cord insertion hole, 13...Cord.

Claims (1)

[Scope of utility model registration request] A retractable pole is formed by fitting an inner pole into an outer pole so that the inner pole can be expanded and contracted, and a mouth hole is provided inside the outer pole via a roll holder that can roll and move up and down. A guide plate is provided at the lower end with a roll-lifting claw for pulling up the roll when the pole is extended, and a cord insertion hole is drilled therein, and the cord inserted into the telescopic pole is inserted in the direction opposite to the roll of the guide plate. Install it along the side surface and hang it on the roll through the cord insertion hole, and when the pole expands and contracts, pull up the roll with the roll pulling claw, or push the roll down with the guide plate through the cord. A conductive telescoping column characterized in that it is configured to be stretched or folded.