JPH10986A - Electric telescopic corner pole - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure the specified contact pressure, thereby supplying a a feeding voltage with certainly. SOLUTION: A switch means 33 is installed in the point midway in a drive cord 3 making a pole expand or contract. This switch means 33 is composed of a fixed contact member 50 connected to a battery via an outside cord 56, a movable contact member 51 being fitted in a core wire of the drive cord 3 free of movement and contacting to or separating from this fixed contact member 50, and a compression coil spring 52 pressing the movable contact member 51 to the fixed contact member 50. When the drive cord 3 is drawn out by drive of a driving motor 34 and thereby the pole 2 is expanded longer, the movable contact member 51 comes into contact with the fixed contact member 50, having the compression coil spring 52 compressed. With this, the switch means 33 comes to a state of being turned on, whereby electric power is fed to an illuminant in the pole 2 via the drive cord 3. Supposing the drive cord 3 is retracted and the pole 2 is shortened, the movable contact member 5 separates from the fixed contact member 50, so that the switch means 33 comes to a state of being turned off, and thus any feeding to the illuminant is stopped.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric telescopic corner pole mounted on a corner of an automobile.

[0002]

2. Description of the Related Art In a motor vehicle, a corner pole having a structure projecting upward from a bumper is sometimes mounted so that a driver can easily see a corner of a vehicle body when entering a garage. This kind of corner pole is composed of a telescopic pole consisting of a plurality of pipes with different diameters. When not in use, it is shortened by a driving device to avoid breakage etc. and can be stored in the bumper There is something. In addition, this type of corner pole incorporates a light source inside the pole and turns on the light source so that the pole can be easily visually recognized even at night.

[0003] Such an electric telescopic corner pole is disclosed, for example, in Japanese Utility Model Laid-Open Publication No. 60-193612 (hereinafter referred to as prior art). The corner pole disclosed in the prior art has a structure in which a drive device pushes or pulls a drive cord in a length direction to expand and contract the pole.

[0004] The drive cord is an electric wire whose core wire is insulated and covered with a synthetic resin, and teeth are engraved in a rack shape on the surface of the covering material, and a pinion is meshed with the teeth. Therefore, when the pinion is rotated by the drive motor, the drive cord can move in the length direction to extend or shorten the pole. Power supply to the light source
Connect the core wire of the drive cord to the anode terminal of the light source, connect a connection member made of conductive material to the power supply, and provide a connection terminal at the end of the core wire (the end opposite to the light source) corresponding to this connection member. This is performed by bringing the connection terminal into contact with a connection member when the pole is extended.

[0005]

However, in the above-mentioned electric telescopic corner pole according to the prior art described above, it is necessary to accurately attach the connection terminal to the optimum position of the core wire in order to secure a constant contact pressure. There was a problem that installation work was troublesome. That is, when the connection terminal is attached to the core wire, and the connection terminal is displaced toward the connection member due to variations in the length of the pole and the length of the drive cord, the connection terminal quickly contacts the connection member when the pole is extended. Although there is no problem with the contact pressure due to contact, the pole cannot be completely extended to prevent the movement of the drive cord, and if it is shifted to the opposite side from the connecting member, the pole will be fully extended. Even if the connection terminal does not contact the connection member at a predetermined contact pressure, conduction to the drive cord becomes uncertain.

As another method of supplying power to the drive cord, a method using a sliding contact is known. In this method, a movable pole plate is provided on one side surface of a pulley in a corner pole in which a drive cord is wound up or pulled out by a pulley, and a core wire of the drive cord is connected to the movable contact plate. Further, a fixed contact plate is provided in a case for accommodating the contact plate in a case for accommodating the pulley, the fixed contact plate is connected to a power source, and the elastic sliding contact plate integrally provided on the movable contact plate is provided. It is in contact with the fixed contact plate.

However, in such a power supply structure using the sliding contacts, since the sliding contact plate slides in a state of being constantly in contact with the fixed contact plate, the light source blinks while the pole is rising due to a change in contact pressure. There was a problem that flickering occurred. In order to eliminate the flicker of the light source, it is necessary to increase the contact pressure by increasing the elasticity of the sliding contact plate.However, the greater the contact pressure, the greater the load on the drive motor. And Further, even after the pole is extended and the light source is normally turned on, the contact pressure changes when vibrations, impacts, and the like are applied, so that the light source flickers.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide a motor-operated type capable of securing a predetermined contact pressure and reliably supplying power. The object is to provide telescopic corner poles.

[0009]

According to the present invention, there is provided a telescopic pole having a light source therein, a drive cord made of a conductive material having one end connected to the pole. In a motorized telescopic corner pole that extends and contracts the pole by moving the cord in the length direction by a driving device and supplies power to the drive cord during extension to turn on a light source, a core wire made of a conductive material and A switch for connecting the core to a power source when the pole is extended; a fixed contact member electrically connected to a power source; and A movable contact member movably fitted to an uncovered portion of the core wire corresponding to a member, and a movement of the drive cord attached to the uncovered portion of the core wire With pole, characterized in that the movable contact member and extending constituted by a spring which presses the fixed contact member. Further, in the present invention, the fixed contact member is formed in a cylindrical body, and the drive cord is inserted therethrough.

In the present invention, the drive cord extends and retracts the pole. The switch means is held in an OFF state because the movable contact member fitted to the uncovered portion of the core wire constituting the drive cord is normally separated from the fixed contact member. When the member is pressed against the fixed contact member by a spring, the member is turned on.
Thereby, power is supplied to the core wire, and the light source is turned on. At this time,
The spring absorbs variations in drive cord length and pole length by being compressed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an electric telescopic corner pole according to the present invention will be described below in detail with reference to the drawings. 1 is a plan view showing a part of a motorized telescopic corner pole according to the present invention, FIG. 2 is a sectional view taken along line II-II of FIG. 1, FIG. 3 is an enlarged sectional view of the pole, and FIG. FIG. In these figures, an electric telescopic corner pole 1 includes a pole 2 configured by telescopically inserting a plurality of pipes 2a to 2n having different diameters,
A flexible and conductive drive cord 3 having one end connected to the smallest diameter tube 2a constituting the pole 2.
And a drive device 4 for extending and retracting the pole 2 by moving the drive cord 3 in the length direction.

The pole 2 includes a plurality of pipes 2a to 2n.
Among them, the smallest diameter tube 2a is provided with a light-transmitting illumination pole 12 in which the light source 5 is housed. The structure of the tubular body 2a will be described in detail with reference to FIG. 3. The tubular body 10 made of a conductive material and the illumination pole 12 fitted into the opening at the upper end side of the tubular body 10 via a seal member 11 are shown. It is composed of The illumination pole 12 is formed in a cylindrical body with a light-transmitting synthetic resin or the like, and the upper end opening is closed by a cap 13, and the illumination pole 12 is prevented from coming off by a caulking portion 14 provided in the cylindrical body 10.

In the interior of the cylindrical body 10, two insulating spacers 15, each formed in a cylindrical body and in close contact with each other,
16 and the illumination pole 1
The movement in the vertical direction is restricted by the lower surface of 2 and a caulking portion 17 provided near the lower end of the cylindrical body 10. The lower insulating spacer 15 accommodates a compression coil spring 18 made of a conductive material and has a terminal member 19 provided at one end of the drive cord 3.
It is connected to the. The upper insulating spacer 16 houses the light source holder 20, the resistor 21, the conductive plates 22, 23, and the like.

The light source holder 20 is formed of an insulating material, and is fitted into the upper end opening of the insulating spacer 16 and the upper end protrudes above the insulating spacer 16 and fits into the lower opening of the illumination pole 12. , The light source 5 is supported by the upper surface. For this reason, the light source 5 is housed at a position lower inside the illumination pole 12. The light source 5 is a light emitting diode in this embodiment, but may be an incandescent bulb. Light source 5
The anode terminal 25 and the cathode terminal 26 of the light source holder 20
And is connected to each of the conductive plates 22 and 23 by soldering. The lower conductive plate 22 is fixed to the lower surface of the light source holder 20, and the anode terminal 25 is electrically connected to the drive cord 3 via the resistor 21 and the compression coil spring 18. Therefore, the resistor 21 is connected to the lower surface of the conductive plate 22 via the lead 27. The compression coil spring 18 is connected to the terminal member 19 provided on the drive cord 3.
And the terminal member 2 provided in the opening at the lower end of the insulating spacer 16.
8 to electrically connect the terminal members 19 and 28 to each other. The terminal member 28 is electrically connected to the resistor 21 via a lead terminal 29.

The upper conductive plate 23 is electrically connected to the cylindrical body 10 by being interposed and held between the illumination pole 12 and the insulating spacer 16. The tubular body 10 includes a lower tubular body 2b to 2n for retractably storing the tubular body 2a and an external cord 31.
(See FIGS. 1 and 2) and is grounded to the vehicle body.

The drive cord 3 is composed of two insulated cords 3A and 3B as shown in FIG. The drive cord 3 will be described in further detail. One of the insulating cords 3A is composed of a core wire 3a-1 made of a conductive material and the core wire 3a-1.
a-1 covering synthetic resin 3a-2.
The terminal member 19 is caulked to one end of the core wire 3a-1 and fixed by soldering or the like, and the other end is guided to the drive device 4 through the inside of the pole 2. Further, a switch means 33 described later is provided on the other end side of the insulating cord 3A. Similarly, the other insulation cord 3B is composed of a core wire 3b-1 made of a conductive material and a covering material 3b-2 made of synthetic resin covering the core wire 3b-1.
The teeth of the drive cord 3 are formed by being spirally wound around the outer periphery of A. The teeth formed by the insulating cord 3B need only be formed to have a length sufficient to expand and contract the pole 2, and therefore need not be formed over the entire length of the one insulating cord 3A. The drive cord 3 having such teeth can be easily manufactured by spirally winding and welding the insulating cord 3B around the insulating cord 3A. The drive mechanism of the drive cord 3 is disclosed in Japanese Patent Application No. Hei 8-9906 filed by the present applicant.
It is described in detail in the issue.

In FIG. 1 and FIG.
Are integrated by a case 35 accommodating a drive motor 34 and the like. A gear transmission mechanism 36 for transmitting the rotation of the drive motor 34 to the drive cord 3 and a plurality of guide rollers 37 are disposed inside the case 35. The gear transmission mechanism 36 includes a worm 38 fixed to an output shaft of the drive motor 34, a worm wheel 39 meshing with the worm 38, and a worm wheel 3
9, a gear 40 that meshes with the teeth of the drive cord 3, and a gear 40 that meshes with the teeth of the drive cord 3. The guide roller 37 is connected to the cord driving gear 4.
The drive cord 3 is arranged to face the gear 41 in the horizontal plane by approximately 90 °. On one side of the case 35, a cylindrical body 42 for accommodating the pawl 2 is integrally provided so as to protrude upward, and a decorative cap 43 is screwed into an opening on the upper end side. An arcuately curved code guide portion 42a is integrally provided at the lower end portion of the cylindrical body 42, and the drive code 3 in the cylindrical body 42 is horizontally inserted into the code guide portion 42a by approximately 90 degrees.
A plurality of guide rollers 44 for turning the direction and guiding the inside of the case 35 are provided. Further, the case 35
On the other side, a tubular body 45 for housing the other end of the drive cord 3 is provided so as to protrude horizontally.

The switch means 33 is shown in FIGS.
As shown in FIG. 7, a fixed contact member 50 fitted to the case 35 side end of the cylindrical body 45 and a movable contact fitted to the other end of the insulating cord 3A corresponding to the fixed contact member 50. The movable contact member 51 includes a compression coil spring 52 for urging the movable contact member 51 toward the fixed contact member 50. The fixed contact member 50 is formed of a conductive material into a tubular body, the other end of the insulating cord 3A is inserted therethrough, and a contact piece 54 is fixed to the outer peripheral surface by a set screw 55 (see FIG. 2). The contact piece 54 is connected to a power supply (battery) (not shown) via an external cord 56 (see FIG. 1).
Is electrically connected to the anode side terminal of The other end of the core wire 3a-1 of the insulating cord 3A forms an uncovered portion H by removing the covering material 3a-2, and the movable contact member 51 is movable on the uncovered portion H. It is attached to. The movable contact member 51 is formed of a conductive material into a cylindrical body, and the inner diameter is set smaller than the outer diameter of the covering material 3a-2. For this reason, the movable contact member 51
A does not move to the portion covered by the coating material 3a-2 of A. A ring 57 made of a conductive material is fixed to the other end of the core wire 3a-1 by caulking or brazing. The compression coil spring 52 is formed of a conductive material and is elastically mounted between the movable contact member 51 and the ring 57. The open end of the fixed contact member 50 on the movable contact member 51 side is formed in a tapered hole, and the fixed contact member 50 of the movable contact member 51 is closely contacted with the tapered hole.
The side end is also formed in a conical shape.

In the electric telescopic corner pole 1 having such a structure, the pole 2 is usually housed in the cylindrical body 42. In this state, the switch means 33
As shown in FIG. 1, the movable contact member 51 is a fixed contact member 50.
Is held in the OFF state by being spaced apart behind. Therefore, power is not supplied to the core wire 3a-1, and the light source 5 is turned off.

To extend the pole 2, the drive motor 3
By driving the gear 4, the gear 41 is rotated clockwise in FIG. As a result, the drive cord 3 is sent from the case 35 toward the cylinder 42 to push up the pawl 2. Therefore, the pole 2 extends and projects above the bumper B. When the drive cord 3 moves, the movable contact member 51
Also move integrally with the drive cord 3, so that the pole 2
Immediately before the protrusion of the compression coil spring 52 almost immediately comes into contact with the fixed contact member 50, the compression coil spring 52 is compressed. Therefore, the switch means 33 switches to the ON state. FIG. 4 shows this state. As a result, the current from the battery
6-fixed contact member 50-movable contact member 51-compression coil spring 52-ring 57-core wire 3a-1-terminal member 19-
Compression coil spring 18-terminal member 28-lead terminal 29-
Anode terminal 2 via resistor 21-lead 27-conductive plate 22
5 to turn on the light source 5.

In this case, the switch means 33 is connected to the core 3a.
-1, the movable contact member 51 movably mounted on the fixed contact member 50 is pressed by the compression coil spring 52, so that the compression coil spring 52 reduces the variation in the length of the pole 2 and the length of the drive cord 3. The movable contact member 51 can be reliably brought into contact with the fixed contact member 50 by absorption. Therefore, a constant contact pressure can be secured, and power supply to the core wire 3a-1 is ensured. Further, since no sliding contact is used, the flicker of the light source 5 can be prevented, and the load on the drive motor 34 is small, so that a small drive motor can be used.

In order to shorten the pole 2 and store it in the bumper B, the drive motor 34 may be driven in the opposite direction to retract the drive cord 3 into the cylinder 45. As a result, the pole 2 is shortened and stored in the cylinder 42.
When the movable contact member 51 is separated from the fixed contact member 50, the switch means 51 is turned off, and the light source 5 is turned off.

In the above-described embodiment, the example in which the teeth are formed by the insulating cord 3B is shown. However, the present invention is not limited to this. May be formed. Also,
In the above-described embodiment, the spring 52 is formed of a conductive material. However, the conductive material is not necessarily required as long as the electrical contact between the core wire 3a-1 and the movable contact member 51 is ensured.

[0024]

As described above, the electric telescopic corner pole according to the present invention includes a telescopic pole having a built-in light source and a drive cord made of a conductive material having one end connected to the pole. An electric telescopic corner pole that expands and contracts the pole by moving a drive cord in a length direction by a driving device and supplies power to the drive cord when extended to turn on a light source. A switch for connecting the core to a power source when the pole is extended; a switch for connecting the switch to a fixed contact member electrically connected to a power source; A movable contact member movably fitted to an uncovered portion of the core wire corresponding to a contact member; and a drive core attached to the uncovered portion of the core wire. Since the pole with the movement of the de-configured with a spring which presses the fixed contact member the movable contact member and extending, it may be satisfactorily absorb variations of the length of the length and the drive cord pole by a spring. Therefore, the movable contact member can be reliably brought into contact with the fixed contact member, and power supply to the light source is ensured. Further, since no sliding contact is used, flicker of the light source can be prevented, and the load on the drive motor is small, so that a small drive motor can be used.

[Brief description of the drawings]

FIG. 1 is a partially cutaway plan view showing an electric telescopic corner pole according to the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is an enlarged sectional view of a pole.

FIG. 4 is a sectional view of the switch means.

[Explanation of symbols]

2 ... Pole, 2a-2n ... Tube, 3 ... Drive cord,
3A, 3B ... insulation cord, 3a-1, 3b-1 ... core wire,
3a-2, 3b-2: coating material, 4: drive device, 5: light source, 33: switch means, 34: drive motor, 35: case, 42, 45 ... cylindrical body, 50: fixed contact member, 51 ...
Movable contact member, 52: compression coil spring, 57: ring.

Claims (2)

[Claims] 1. A telescopic pole having a built-in light source and a drive cord made of a conductive material having one end connected to the pole, and the drive cord is moved in a length direction by a driving device, so that the pole is moved. In a motorized telescopic corner pole that supplies power to the drive cord and turns on a light source when extended, the drive cord comprises a conductive core wire and a coating material that insulates the core wire. A switch means for connecting the core wire to a power supply at the time of extension is provided, and the switch means is movably connected to a fixed contact member electrically connected to a power supply and an uncovered portion of the core wire corresponding to the fixed contact member. The movable contact member fitted, and the movable contact member is fixed to the uncovered portion of the core wire when the pole is extended with the movement of the drive cord. An electric telescopic corner pole, comprising a spring which is pressed against a contact member. 2. The electric telescopic corner pole according to claim 1, wherein the fixed contact member is formed in a tubular body and a drive cord is inserted therethrough.