JPH10241448A - Up-down device for luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact up-down device constructed easily for a luminaire. SOLUTION: This up-down device for a luminaries comprises a drive section 15 having a winding dram 17 which winds roundly a wire in a lifting device main body fitted on an installed face and a pulley 25 and or a pulley 30 which winds the wire rope 2. A lifting section 35 fitted with the luminarire installed on the wire rope and the luminaire is moved up and down by winding up the winding drum 17 of the drive section 15 and rotating it top the unwinding direction. In this case, a height detector provided movably up and down between the winding drum 17 and the pulley 25 and/or 30 when the winding drum 17 rewinds the wire rope by a prescribed length, the wire rope operates the height detector downward to stop the drive section 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting apparatus for raising and lowering a lighting apparatus installed on a high ceiling or the like.

[0002]

2. Description of the Related Art Conventionally, a lighting apparatus mounted on a high ceiling uses a lifting device to raise and lower the lighting apparatus installed on the high ceiling in order to facilitate maintenance of the lighting apparatus.

In a lifting device used for a general lighting fixture 3a, usually, as shown in FIG.
When the vehicle arrives at the floor surface 6, the wire rope 2 suspending the lighting fixture is used to loosen, and the lifting device 1 is used.
It has an automatic stop function to stop the operation.

[0004] However, in the case where the lifting device is stopped by using the slack of the wire rope, FIG.
Is unsuitable for decorative lighting fixtures 3b such as a chandelier as shown in Fig. 5, and even if the tip of the chandelier reaches the floor 6, the wire rope 2 is not loosened.
The automatic stop device did not work, and there was a risk of breaking the lighting equipment.

[0005] Therefore, a lifting device 1a used for lowering a decorative lighting device 3b such as a chandelier is provided by:
Before the lighting fixture reached the floor, a function of stopping the elevation of the lighting fixture was required.

Heretofore, there has been the following elevating device 1b used for decorative lighting equipment such as a chandelier.

[0007] First, a lifting device having a function of setting a lifting height, such as Japanese Utility Model No. 3-30966.

[0008] Second, a lifting device in which the length of the wire rope is cut in advance to a specified size and adjusted so that the lighting fixture does not reach the floor.

Thirdly, there is an operation panel using an optional operation panel having a timer function.

[0010]

As described above, there are three methods for raising and lowering devices having a function of stopping the elevation of the lighting fixture before the lighting fixture reaches the floor surface.
In the first method, there is a problem that the elevating device is increased by the size of the motion transmitting means.

In the second method, since a special order is placed, there are problems in terms of delivery and a problem that fine adjustments cannot be made at a construction site.

In the third method, there is a problem in cost such as an expensive operation panel.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a compact and easy-to-install lighting device elevating device.

[0014]

In order to achieve the above-mentioned object, a lifting apparatus for a lighting apparatus according to the present invention comprises a winding drum on which a wire rope is wound inside a lifting apparatus main body attached to a surface to be mounted. And a pulley around which the wire rope is wound, wherein the wire rope includes
A lifting / lowering unit to which a lighting device is attached is mounted, and a winding drum for the driving unit is wound up and rewinded to raise and lower the lighting device. Is provided with a height detecting means movably mounted in a vertical direction, and when the wire rope wound around the winding drum is rewound by a predetermined length, the wire rope moves down the height detecting means. And the driving unit is stopped.

In the above configuration, when it is desired to stop the luminaire at an arbitrary height, the movable holder on which the microswitch as the height detecting means is mounted is adjusted to the position of the desired height.

Then, when a down button (not shown) is pressed, the driving motor rotates in the direction of unwinding the wire rope wound around the winding drum, and the lighting fixture gradually descends. As the luminaire descends, the angle A between the winding drum and the pulley gradually increases. Along with this, the wire rope gradually moves downward with the pulley as a fulcrum, and the inclined wire rope presses the micro switch, thereby turning off the micro switch and stopping the driving motor. This can prevent the lighting fixture from hitting the floor. Further, since the height detecting means is disposed between the winding drum and the pulley, the lifting device can be designed to be compact.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. Note that the same components as in the prior art will be described with the same reference numerals.

FIG. 3 shows a lighting apparatus elevating device incorporating a height adjusting member, and FIG. 1 shows components of the lighting device elevating device.

As shown in FIG. 3, the lifting device for a lighting fixture comprises a housing-like lifting device main body 10 attached to a ceiling 5 as a surface to be mounted, and a lifting portion 35 suspended from the wire rope 2. ing.

The elevating device main body 10 is a housing 1 that is opened downward.
4 and a drive motor 15 that rotates forward and backward is placed in the housing 14 in a laterally laid state, and is fixed to the flat top surface portion 11 of the housing by a method not shown.

Further, a rotation stopper (not shown) is provided on the rotation shaft of the driving motor 15, and a winding drum 17 is fitted on the rotation shaft provided with the rotation prevention.
8a is attached to the winding drum 1 by the screw 18.
7 is screwed and fixed so as not to protrude from the rotating shaft.

The winding drum 17 is formed with a groove 19 having a substantially trapezoidal cross section around which the wire rope 2 is wound, and the end of the wire rope 2 is connected to the groove 19 of the winding drum.
The wire rope 2 is fixed on the bottom side and wound around the groove 19.

Further, on the top surface 11 of the lifting device main body,
A first pulley 25 that makes the wire rope 2 wound around the winding drum 17 make a U-turn is supported by a support shaft 26, and the first pulley 25 is placed on a horizontal plane around the support shaft 26. It is rotatably supported.

Between the winding drum 17 and the first pulley 25, a second pulley 30 for turning the U-turned wire rope 2a downward by approximately 90 degrees is provided with a lifting device main body 1.
0, the second pulley 30 is supported by the support shaft 26.
Are rotatably supported about a support shaft 26.

The lifting section 35 is suspended from the wire rope 2b hanging downward by the second pulley 30. A hook hole 8 is formed at the tip of the wire rope, and the hook hole 8 is
It is hooked and fixed by a method not shown.

The lighting equipment 3 is detachably mounted on the elevating part 35, and the lighting equipment 3 and the elevating part 35 are electrically connected. A switch (not shown) for turning on and off the lighting device 3 is built in the elevating unit 35. When the lighting device 3 is wound up by the winding drum 17 and installed on the ceiling, the switch (not shown) is used. ) Is turned on, and the lighting fixture 3 is turned on. When the lighting fixture 3 is lowered, a switch (not shown) is turned off, and the lighting fixture 3 is turned off.

A height adjusting member 40 shown in FIG. 2 is arranged between the winding drum 17 and the second pulley 30.

The height adjusting member 40 is composed of a detection base 45 and height detection means 55. The detection base 45 has a U-shaped cross section and a detection base 45 extending outward from the upper end of the detection base 46. A pair of elongated holes 49, 49 are vertically formed in the opposite side surface portions 48, 48 of the detection base main body 46 in the vertical direction. A scale 50 for indicating the length of the wire rope unwound from the winding drum, that is, the lighting fixture descending height, is provided on the side of the long hole 49.
Is engraved. The detection base 45 is welded and fixed to the mounting pieces 47 of the detection base and the top surface 11 of the housing by electric welding.

The height detecting means 55 comprises a micro switch 56 for stopping the rotation of the driving motor 15 and a movable holder 60 for moving the micro switch vertically.

The movable holder 60 is bent in a U-shape so as to be in sliding contact with the outer surfaces of both side surfaces 48 of the detection base, and is constituted by both side surfaces 61, 61 of a bottom surface 62.

The side surfaces 61, 61 are provided with a through hole 63 on one side and a screw hole 64 on the other side. In addition, the micro switch 5
6 is screwed and fixed with two micro setscrews 65. A push button (not shown) projecting upward from the upper surface and a pressing plate 57 made of an elastic plate for pressing the push button downward are fixed to one end of the upper surface of the microswitch 56. Installed. When the push button (not shown) is pressed, the micro switch is electrically disconnected and the drive motor 15 is stopped. When the push button is open, the microswitch is electrically connected, and the driving motor 15 is driven.

In order to attach the movable holder 60 to the detection base 45, the movable holder 60 with the microswitch is inserted into the detection base 45, and the long hole 49 of the detection base 45 and the through hole 63 of the movable holder are aligned. After that, the collar 70 is inserted into the long hole 49 from the through hole 63. The front end of the collar 70 inserted into the through hole 63 and the long hole 49 abuts on the side surface portion 61, and the rear end of the collar 70 is inserted into the through hole 6.
It is in a state where it has entered a little into 3.

Then, the tip of the holder set screw 66 with the washer 67 is inserted into the through hole 71 of the collar, and the holder set screw 66 is screwed into the screw hole 64 of the movable holder. 61, 61 are tightened by holder set screws 66, and the movable holder 60
Are fixed to the side surfaces 48 of the detection base 45 by pressure.

The dimensional relationship between the detection base and the movable holder is as follows. b is formed slightly longer than B, and d is formed slightly wider than D. The diameter e of the collar 70 is slightly smaller than the width E of the long hole 49.

When it is desired to move the micro switch 56 in the vertical direction, the holder set screw 66 is loosened, the micro switch 56 is moved along the elongated hole 49, and the holder set screw 66 is tightened again. .

An elevating mode of the elevating device using the height adjusting member will be described with reference to FIG.

FIG. 3A shows a state in which a lighting device is mounted on the elevating unit of the lifting device and the lighting device is installed on a high ceiling.
Is wound almost completely, and the wire rope 2 fed out of the winding drum is horizontally wound around a first pulley 25, and the wire rope 2 is U-turned by the first pulley 25.
a is wound around the groove of the second pulley 30 in a horizontal state,
The wire rope 2b is attached in a state where the lifting unit 35 is hung downward. In this state, the wire rope 2
Are separated from the microswitch 56.

FIG. 3B shows a state in which the lighting equipment is lowered. When the lighting equipment is to be lowered using a lifting device, a lowering button (not shown) is turned on. It rotates in the direction in which the wire rope wound around the winding drum 17 is unwound. When the drive motor of the winding drum 17 starts rotating in the direction in which the wire rope 2 is unwound, the layer 13 of the wire rope 2 wound around the winding drum 17 decreases, and the winding drum 17 and the first Pulley 25
Angle A of the wire rope 2a hooked on
Is getting bigger. That is, the wire rope 2a
With the first pulley 25 as a fulcrum, it gradually moves downward.

When the wire rope 2a gradually moves downward, the wire rope 2a comes into contact with the pressing piece 57 of the micro switch disposed between the winding drum 17 and the first pulley 25 (see FIG. 4). 3 (C)). Further, when the layer 13 of the wire rope decreases, the wire rope also moves downward, so that the pressing piece is pressed downward, and the push button (not shown) of the micro switch also moves downward to open the switch of the micro switch. State, and the drive motor 15 is stopped.

When it is desired to stop the lighting apparatus 3 at an arbitrary position, the holder fixing screw 66 inserted into the movable holder 60 is loosened, and the movable holder 60 is scaled to the desired height scale 50 stamped on the detection base. To match. Then, when the lighting apparatus 3 is lowered, the wire rope 2 wound around the winding drum 17 is gradually unwound, and the wire rope layer 13 is reduced.

When the lighting fixture 3 reaches an arbitrary position,
The wire rope 2 turns off the micro switch, stops the driving motor 15, and stops the lighting fixture attached to the elevating device halfway down.

The operation of the above embodiment will be described.

When it is desired to stop the luminaire at an arbitrary height so as not to hit the floor, loosen the holder set screw inserted through the movable holder and move the movable holder along the elongated hole formed in the detection base. And move the movable holder on which the microswitch is mounted to the scale at the desired height.

Then, when a down button (not shown) is turned on, the driving motor rotates in a direction to unwind the wire rope wound around the winding drum, and the lighting fixture gradually descends. As the luminaire descends, the wire rope wound around the winding drum is gradually unwound, and the layer of wire rope wound around the winding drum is gradually reduced. As the wire rope layer gradually decreases, the angle A between the winding drum and the first pulley gradually increases.
Along with this, the wire rope gradually moves downward with the first pulley as a fulcrum.

When the lighting apparatus approaches an arbitrary position, the inclined wire rope comes into contact with the pressing piece of the microswitch. Furthermore, as the layer of wire rope decreases,
When the pressing piece is pressed downward and the lighting fixture reaches an arbitrary position, the micro switch is turned off and the driving motor stops. The lighting fixture suspended from the lifting device stops halfway down and can prevent the lighting fixture from hitting the floor.

When the lighting apparatus is installed on a high ceiling, when a lift button (not shown) is turned on, the driving motor rotates in a direction for winding the wire rope, and the wire rope is wound around the winding drum. . When the lighting fixture rises to a predetermined position, a switch (not shown) built in the lifting unit
Is pressed, the switch is opened, and the drive motor stops.

As described above, since the height detecting means 55 is located between the winding drum 17 and the first pulley 25, it is possible to design the elevating device compactly.

The wire rope 2 is wound on the winding drum 1
Although the description has been made by winding between the pulley 7 and the first pulley 25 that makes a U-turn, as shown in FIGS. 4 and 5, the wire rope 2 is directly used without using the first pulley 25. The same operation and effect can be obtained even when the winding is performed between the second pulley 30 and the winding drum 17.

[0049]

As described above, according to the present invention, since the height detecting means is provided between the winding drum and the pulley so as to be movable in the vertical direction, the height can be detected in a small space. Means could be installed, and a compact lifting device was made possible.

Further, if the lighting fixture is stopped before the floor reaches the floor, the decorative fixture is not damaged.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a lifting device incorporating a height adjusting member according to a first embodiment of the present invention.

FIG. 2 shows a height adjusting member according to the embodiment, and FIG. 2 (A) is an exploded perspective view. (B) is a perspective view showing an assembled state.

FIG. 3 is a plan view showing an elevating device incorporating a height adjusting member according to the present invention, in which (A) shows a state in which a lighting fixture is installed on a high ceiling. (B) is a plan view showing a state where the lighting fixture is lowered. (C) is an enlarged plan view showing the relationship between the height detecting means and the wire rope.

FIG. 4 is a perspective view showing a lifting device incorporating a height adjusting member according to another embodiment.

FIG. 5 is a plan view showing a lifting device incorporating a height adjusting member according to another embodiment.

FIG. 6 shows a lighting device using a lifting device according to the related art.
(A) is a top view which shows a general lighting fixture. (B) is a top view which shows a chandelier type lighting fixture.

[Explanation of symbols]

2 ... wire rope, 3 ... lighting equipment, 5 ... ceiling (mounting surface), 10 ... elevator, 15 ... drive motor (drive unit), 17 ... winding drum, 25 ... first pulley (wire rope) , A winding drum and a pulley around which a wire rope is wound, 30... A second pulley (a winding drum and a pulley around which a wire rope is wound), 35.

Claims (1)

[Claims] 1. A lifting device main body attached to a surface to be attached includes a drive unit having a winding drum around which a wire rope is wound, and a pulley around which the wire rope is wound. A lifting / lowering unit to which a lighting device is attached; a winding / rewinding device for a lighting device for winding / rewinding a winding drum of the driving unit to raise / lower the lighting device; between the winding drum and the pulley; Is provided with a height detecting means which is attached so as to be movable in the vertical direction, and when the wire rope wound around the winding drum is rewound by a predetermined length, the wire rope moves down the height detecting means. The lighting device lifting and lowering device is operated to stop the driving unit.