JPS6312500Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a power supply/reception device for an automatic telescopic pole device in which an electric component such as a lamp is provided at the tip of a multi-stage pole that expands and contracts when driven by an electric motor.

In the automatic telescoping pole device as described above, electrical parts such as lamps are connected to two sides (+) and (-).
Two independent power supply and reception wirings are required. Therefore,
Conventionally, one wiring, generally the (-) side wiring, uses a metal multi-stage pole, but when the other wiring is taken out from within the drive cord that drives the multi-stage pole, it is necessary to pass it through the drive part. There was a problem that it was difficult to take it out.

An object of the present invention is to solve the above-mentioned problems and provide a power supply/reception device for an automatic telescopic pole device that can be easily assembled at the site of use and can supply and receive power only when a multistage pole is extended.

To achieve this objective, the power supply/reception device according to the present invention is an automatic telescopic pole device in which an electric component is provided at the tip of a multi-stage pole that expands and contracts when driven by an electric motor. A toothed drive cord that transmits the driving force of the electric motor to the multi-stage pole is provided with a core wire connected to the electric component, and a substantially cylindrical conductive clip with a flange is fitted and fixed to the base end of the toothed drive cord, In addition to connecting the core wire to this conductive clip, a power supply or power receiving terminal is provided on the drive unit housing containing the feed gear, etc., and a toothed drive cord is connected to a multistage pole between this terminal and the collar of the conductive clip. An elastic conductive member biased in the shortening direction is provided so that the terminal and the conductive clip are electrically connected at the extension limit of the multistage pole.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a drive section of the automatic telescopic pole device. A feed gear 4 that meshes with the feed gear 4, a press roller 5 that faces the feed gear 4, and the like are built-in. Rack-shaped teeth 6b formed on the toothed drive cord 6 are engaged with the feed gear 4, and the toothed drive cord 6 is held between the feed gear 4 and the presser roller 5. Note that the above-mentioned rack-shaped teeth 6b are
It is formed in a length range commensurate with the expansion and contraction stroke of the multi-stage pole from the base end side of the toothed drive cord 6. The toothed drive cord 6 is flexible and has a core wire 6a, the tip of which is connected to the tip pole 8 of the multistage pole 7, and the core wire 6a is connected to the tip of the tip pole 8. It is connected to the (+) side of the lamp 9 mounted by appropriate means. The (-) side of this lamp 9 is connected to the tip pole 8, and is connected to a set screw 10 that fixes the multi-stage pole 7 to the drive unit housing 2 via other poles constituting the multi-stage pole 7. 10
is grounded.

A substantially cylindrical conductive clip 11 with a flange is fitted and fixed to the proximal end of the toothed drive cord 6 that loosely passes through the partition wall 2a of the housing 2. The conductive clip 11 is made of a conductive metal, as shown in FIGS. 2 to 4, and has a longitudinal cut 11a and a flange 11b at one end.
is formed, and an engaging part 11d that engages with the groove of the teeth 6b of the toothed drive cord 6 is formed in the cylindrical part 11c, a notch 11e (or hole) is formed in the collar 11b, and the other end is provided with a core wire holding piece 11f. and toothed drive code 6
The core wire 6a extending from the base end of the conductive clip 11 is folded back and runs along the inner peripheral surface of the cylindrical portion 11c of the conductive clip 11.
It is further folded back in the opposite direction from part 1b, inserted into the notch 11e, and held by the core holding piece 11f, and connected and fixed to the conductive clip 11 by caulking this holding piece 11f with a tool such as pliers. There is. Further, the conductive clip 11 has a cutout 11
By elastically deforming a to enlarge the diameter and fitting it into the base end of the toothed drive cord 6, the engaging part 11d is engaged with the groove of the tooth 6b, and the toothed part 11c is engaged with the groove of the tooth 6b. The drive cord 6 is tightened from the outer circumferential side, and the conductive clip 11 is fixed thereto. A plate-shaped power supply terminal 12 is fixed to the partition wall 2a of the housing 2 opposite to the conductive clip 11, and the terminal 12 is connected to a power source such as a battery. One end of an elastic conductive member 13 made of a coil spring is fixed to this power supply terminal 12, and this conductive member 13 is interposed between the power supply terminal 12 and the collar 11b of the conductive clip 11 together with a contact plate 14. ing.

Next, the operation of the embodiment configured as described above will be explained. When the electric motor is driven forward or backward, the drive gear 3 drives the feed gear 4 forward or backward, and the toothed drive cord 6 that meshes with the gear is pushed out of the housing 2 or drawn into the housing 2, resulting in a multi-stage transmission. Pole 7 is expanded and contracted. As the multistage pole 7 extends, the conductive clip 11 fixed to the base end of the toothed drive cord 6 approaches the partition wall 2a of the housing 2, and at the extension limit of the multistage pole 7, the collar 1 of the conductive clip 11 approaches the partition wall 2a of the housing 2.
1b compresses the elastic conductive member. Therefore, the (+) side of the lamp 9 is electrically connected to the power source through the circuit including the core wire 6a of the toothed drive cord 6, the conductive clip 11, the contact plate 14, the conductive member 13, and the power supply terminal 12, and the (-) side of the lamp 9 Since the side is always grounded via the multistage pole 7, the lamp 9 is lit. When the multistage pole 7 is shortened from this extension limit, the toothed drive cord 6 is drawn into the housing 2 in a dripping manner, and the conductive clip 11 is inserted into the partition wall 2a.
Since the conductive clip 11 and the elastic conductive member 13 are separated from each other, the lamp 9 is turned off.

The device of this embodiment has a cutting 11 as described above.
a, the conductive clip 11 having the collar 11b and the engaging part 11d is attached to the core wire 6 of the toothed drive cord 6.
Connect to a and cut into toothed drive cord 6 1
Since 1a is opened and fitted and fixed, even if the drive unit 1 and multistage pole 7 are integrated or separate, they can be easily assembled at the site of use using common tools such as pliers or radio pliers. be able to. And in this case, toothed drive cord 6
After meshing with the feed gear 4 and passing between this and the presser roller 5, the conductive clip 11 can be easily attached to the base end of the toothed drive cord 6 extending from the partition wall 2a. Therefore, when the drive unit 1 and the multistage pole 7 are separate, if the conductive clip 11 is fixed to the toothed drive cord 6 in advance, the feed gear 4 and presser roller 5 will be damaged unless the conductive clip 11 is made smaller. If the conductive clip 11 is small, it is difficult to connect it to the power supply terminal 12, and poor contact occurs due to rattling. It can be reliably connected to the power supply terminal 12 via the elastic conductive member 13, and this power supply terminal 1
2 can be connected to the power supply.

In the present invention, in the above-mentioned embodiment, the conductive clip 11 is connected to the power supply terminal 12, but the power supply terminal 12 is grounded instead of the power reception terminal, and the multistage pole 7 side is connected to the power supply terminal. May be connected to. Furthermore, the present invention can also be applied to an automatic telescopic pole device in which a microphone, heat-sensitive, and other various sensors are installed at the tips of the multi-stage poles 7 as electrical components instead of lamps.

As explained above, in the power supply/reception device of the automatic telescopic pole device according to the present invention, the conductive clip 11 having a substantially cylindrical shape with a flange is fitted and fixed to the base end of the toothed drive cord, and the toothed drive cord is inserted into the conductive clip. Since the core wire of the cord is connected and an elastic conductive member is provided between the conductive clip and the terminal provided on the drive unit housing, it can be easily assembled at the site of use.
This has the effect that it can be easily and reliably connected to the outside, and that the elastic conductive member can supply or receive power to the conductive clip only within the extension limit of the multistage pole.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side sectional view showing an embodiment of the present invention, Fig. 2 is a perspective view showing the proximal end of the toothed drive cord and the conductive clip, and Fig. 3 is a sectional view of the same side. , FIG. 4 is an end view of the same. DESCRIPTION OF SYMBOLS 1... Drive part, 2... Drive part housing, 2a... Partition wall, 3... Drive gear, 4... Feed gear, 5...
Presser roller, 6...Toothed drive cord, 6a
...Core wire, 6b...Teeth, 7...Multi-stage pole, 8...
... Tip pole, 9 ... Lamp, 10 ... Set screw, 11 ... Conductive clip, 11a ... Cut,
11b... collar, 11c... cylindrical part, 11d... engaging part, 11e... hole, 11f... core wire holding piece, 1
2...Power supply terminal, 13...Elastic conductive member, 14
...Contact board.

Claims (1)

[Scope of utility model registration request] In an automatic telescopic pole device, an electric component is installed at the tip of a multistage pole that expands and contracts by the drive of an electric motor.
A toothed drive cord that meshes with the feed gear driven by the electric motor and transmits the driving force of the electric motor to the multi-stage pole is provided with a core wire connected to the electric component, and a flange is provided at the base end of the toothed drive cord. A cylindrical conductive clip is fitted and fixed, the core wire is connected to this conductive clip, and a terminal for feeding or receiving power is provided on the drive unit housing housing the feed gear etc., and this terminal is connected to the conductive clip. An automatic telescopic pole device characterized in that an elastic conductive member is provided between the collar and the toothed drive cord to urge the toothed drive cord in the direction of shortening the multistage pole, and the terminal and the conductive clip are electrically conductive at the extension limit of the multistage pole. power supply/reception device.