JPS6021850Y2 - conductive telescopic strut - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a conductive telescoping column that is used for, for example, a tabletop microphone, a desk lamp, etc., has a built-in power supply cord, etc., and expands and contracts so that its height can be adjusted.

Such conductive telescoping poles include one in which a soft cord such as a vinyl cord is inserted into a telescoping pole configured to fit in a telescoping manner, and when the pole is extended or contracted, the cord is stretched or sagged due to its flexibility. be.

However, since the cord is in a completely free state without any restrictions, especially when the pole is retracted, the slack cord that spreads laterally can get caught in the base end of the inner pole, impairing the expansion and contraction movement, or tearing the vinyl covering. Furthermore, if the poles are provided over a long distance, they may become entangled with each other or become twisted, making them unusable.

The present invention was developed in view of these points, and involves installing an insulating square guide rod inside the outer pole of a telescoping pole, and fitting the guide rod into the base end of the inner pole. Attach an insulating support and use these guide rods and supports to prevent rotation, and the contact spring attached to the support slides in contact with the conductor attached along the guide rod to prevent the electric connection structure and the waist cord from interfering with each other. To provide a conductive telescoping column in which a cord on the outside pole side that is likely to cause problems is removed to prevent problems such as jamming.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings. In the drawings, reference numeral 1 denotes a two-stage telescoping pole as a telescoping support column. are telescopically fitted to allow for expansion and contraction.

The proximal end of the outer pole 1a is fixed to a pedestal or the like and is erected vertically, and a microphone or the like is mounted on the tip of the inner pole 1b. The pole la, 1. b is preferably made of strong metal.

At the upper end of the outer pole 1a, there is a folded part 2 which is folded back inward for fixing the inner pole 1b, and a hollow base end fitting 3 is fixed to the base end by caulking.

A sliding spring 4 is attached to the outside of the base end of the inner pole 1b, and by inserting this sliding spring 4 between the outer pole 1a and the outer pole 1a, the poles 1a and lb can be smoothly slid. A tip metal fitting 6, which is fixedly held in an expanded and contracted state and has a screw 5 on the tip for screwing a microphone or the like, is similarly fixed by caulking.

Further, over approximately the entire length of the inner center of the outer pole 1a,
For example, a guide rod 7 cut out of a rectangular insulating molded body is installed with its lower end fixed to the base end fitting 3, and inside this guide rod 7, a reinforcing core bar 8 is attached to the lower end fixing part 8a of the guide rod 7. The guide rod 7 is screwed and embedded, and the conductor 9 is embedded in each of the two opposing sides of the guide rod 7 with its surface exposed.

By the way, the lower part of the guide rod 7 in the vicinity of the base end fitting 3 is widened toward the end to increase its strength, and as a result, the distance between the lower parts of the conductors 9 is also widened, and the end portion 9
a is exposed in the groove 10 at the lower end of the guide rod 7 and guided to the outside.

Next, an insulating support 12 having the same square hole 11 as the guide rod 7 is fixed to the inside of the base end of the inner pole 1b so as to be collinear with the sliding spring 4, and this support 12 The holes 11 of the guide rods 7 are fitted into the poles la and lb.
Mutual rotation is prevented.

A contact spring 13 is buried in this support 12, and one end of this contact spring 13 is in sliding contact with the conductor 9 of the guide rod 7, while a core wire is insulated and coated with vinyl or the like inside the inner pole 1b. A cord 14 is inserted, and one end of the cord 14 is soldered to the contact spring 13, and the other end is fixed to the tip fitting 6 with a fixture 15, thereby holding it in an extended state.

Since the present invention is constructed in this way, when the pole is extended or contracted, the support body 12 moves while fitting into the square guide rod 7 and stops rotating, so that the inner pole 1b straightly extends and contracts, and slides. The spring 4 fixes and holds it in any expanded or contracted state.

At this time, the contact spring 13 of the inner pole 1b moves while always contacting the conductors 9, and these conductors 9,
The electrical connection is maintained via the contact spring 13 and the cord 14.

As described above, according to the present invention, there is no cord on the side of the outer pole 1a, and the electrical connection is made by sliding contact between the contact spring 13 and the conductor 9, and the guide rod 7 holding the conductor 9 and the contact spring Since the positioning is performed by preventing the cord from rotating using the support member 12 that holds the cord, problems such as the cord sagging on the side of the outer pole 1a and getting caught in the base end of the inner pole are completely eliminated.

Since the sliding spring 4 on the side of the inner pole 1b is in elastic contact with the outer pole 1a, and the contact spring 13 is likewise in elastic contact with the guide rod 7 which is integral with the outer pole 1a, the Due to the cooperative movement, the sliding holding force of the inner pole 1b increases.

Due to the angular shape of the guide rod 7 and the support body 12 that fits therein, many circuits can be formed, which has a wide range of uses.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing an embodiment of the conductive telescoping column according to the present invention, and FIG. 2 is a cross-sectional view taken along the line -■ in FIG. 1...Telescopic pole, 1a...Outer pole, 1b...Inner pole, 7...Guide rod, 9...Conductor, 12 ...Support,
13... Contact spring, 14... Cord.

Claims (1)

[Scope of utility model registration request] An insulating rectangular guide rod is installed over approximately the entire length of the center of the outer pole of a telescoping pole formed by telescopically fitting an inner pole into an outer pole, and a conductor is attached to the surface of the guide rod. , an insulating support that fits with the guide rod is attached to the base end of the inner pole, a contact spring that comes into contact with the conductor is attached to the support, and a cord connected to the contact spring is attached to the inner pole. 1. A conductive telescoping pole, characterized in that the conductive telescoping pole is constructed such that when the pole is extended or contracted, the guide rod and the support body prevent the pole from rotating, and the electrical connection is maintained through sliding contact between the conductor and the contact spring.