JPH05174609A - Motor-driven elevator device for luminaire - Google Patents

Abstract

PURPOSE:To house an elevator part reliably in a fixing part, and also carry out connection of a luminaire reliably and easily. CONSTITUTION:A movable contact point 9 is erected on an upper end wall body of a frame body 14, and a screw terminal plate 15 is arranged in the frame body 14, and a screw terminal 16 is arranged on the screw terminal plate 15, and the screw terminal 16 and the movable contact point 9 are connected beforehand to each other by means of a conductor. An ascending/ descending part 3 is constituted of a cylindrical frame member 14a and a movable contact point unit 18, and a pulley 7 is installed on the inner periphery of the frame member 14a so as to be mountable/demountable, and the movable contact point unit 18 is installed in the upper end part of the frame member 14a so as to be mountable/demountable. A lock case 11, is arranged inside of a fixing part 2, and a guide groove 19 is nicked on the peripheral wall of the lock case 11. A pair of suspending arms 20 are arranged on the peripheral wall of the ascending/descending part 3, and the ascending/descending part 3 is suspended by means of the respective tip parts of the suspending arms 20, and a distance between fulcrums of a wire of the fixing part 2 is also lengthened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric lifting device for a lighting fixture mounted on a high ceiling such as a gymnasium.

[0002]

2. Description of the Related Art Generally, a lighting fixture mounted on a high ceiling of a gymnasium or the like illuminates from a height in contact with the ceiling surface when used, but when performing maintenance such as replacement of a light bulb, the lighting fixture should be mounted on the floor surface. I need to take it down. For raising and lowering the lighting fixture, an electric lifting device including a fixed portion directly fixed to the ceiling and a lifting portion to which the lighting fixture is attached has been conventionally used. The fixed part of the electric lifting device of this lighting fixture incorporates a lifting motor, a wire, a wire drum, and a plurality of pulleys, and the lifting part is suspended by the wire of the fixed part.
It is lifted by operating the lift switch. A movable contact is provided on the upper surface of the elevating part, and when the elevating part is wound by a wire and stored inside the fixed part, the movable contact and the fixed contact provided inside the fixed part come into contact with each other, The lifting unit is energized. The lighting fixture is attached to the lower surface of the elevating part of the electric elevating device, and is in a state in which it can be turned on when the elevating part is fixed inside the fixing part.

[0003]

However, in the above-described conventional electric lifting device for lighting equipment, when the lifting part is lowered for maintenance, the lifting part rotates due to the twist of the wire with respect to the fixed part, and again. There is a problem in that, when the elevating part is raised, the elevating part cannot be stored in a predetermined portion of the fixed part. Further, in the conventional electric lifting device, it is necessary to directly connect the conducting wire of the lighting fixture and the movable contact of the lifting portion. For this reason, in the maintenance work of replacing the lighting fixture, it is necessary to connect the conductors in a narrow space inside the elevating part, and a connection mistake is likely to occur, which makes maintenance work difficult. Therefore, an object of the present invention is to ensure that the elevating part does not rotate with respect to the fixed part during elevating and that the elevating part can be reliably housed in the fixed part, and that the wiring of the lighting fixture can be reliably and easily performed. An object is to provide an electric lifting device for a lighting fixture.

[0004]

In order to achieve the above object, an electric lifting device for a lighting fixture according to the present invention has a frame body having a lower end open at the lower end, and the upper wall of the frame is The movable contact is pierced through and the screw terminal plate is installed horizontally inside the frame body.The screw terminal is passed through and fixed to this screw terminal plate according to the mounting position of the lighting equipment, and the upper end of this screw terminal And the lower end of the movable contact are connected in advance by a conductive wire.

Further, in the electric lifting device for the lighting equipment of the present invention, the lifting portion of the lifting device is constituted by the cylindrical frame member and the movable contact unit, and the pulley is detachably attached to the inner periphery of the frame member. A wire is wound around the movable member and the movable contact unit is detachably attached to the upper end of the frame member.

Further, the electric lifting device for a lighting fixture of the present invention is provided with a lock case for accommodating and fixing the lifting part inside the fixing part, and a guide groove for guiding the lifting wire is provided on a peripheral wall of the lock case. It is characterized by being engraved.

Further, in the electric lifting device for the lighting equipment of the present invention, a pair of suspending arms are provided on the peripheral wall of the lifting unit, and the lifting unit is suspended and fixed at the respective tip ends of the suspending arms. It is characterized in that the distance between the fulcrums of the wires of the section is increased.

[0008]

In the lighting apparatus of the present invention, a screw terminal plate is provided in the frame of the elevating unit, the screw terminal is attached to the screw terminal plate according to the mounting position of the lighting apparatus, and the movable contact and the screw terminal are connected in advance. In the electric lifting device, since the movable contact and the screw terminal are connected in advance, the worker may connect the lead wire of the lighting fixture to the screw terminal during maintenance. As a result, it is not necessary to directly connect the movable contact and the lead wire of the lighting fixture in a narrow space inside the lifting unit, and the lighting fixture can be easily replaced. Further, since the screw terminal is provided according to the mounting position of the lighting fixture and is properly connected to the movable contact, it is possible to completely prevent a wiring mistake during maintenance.

Further, in the electric lifting device for a lighting apparatus according to the present invention in which the elevating part is composed of the cylindrical frame member and the movable contact unit, the pulley is detachably attached to the inner periphery of the frame member and the wire is attached to the pulley. Since the movable contact unit is removably attached to the upper end of the frame member after being wound, only the movable contact unit can be easily removed without removing the fixed portion during maintenance. As a result, the movable contact, which is a consumable component, can be easily replaced.

Further, a lock case is provided on the fixed portion,
In the electric lifting device for a lighting device according to the present invention, in which a wire guide groove is engraved on the peripheral wall of the lock case, a wire for suspending the elevating part when the elevating part is lowered is engaged with the guide groove provided in the lock case. Therefore, the elevating part can be always held in a predetermined direction. As a result, it is possible to prevent the elevating part from rotating relative to the fixed part when it is lowered and being unable to be stored in the fixed part.

Further, a pair of suspending arms are provided on the peripheral wall of the ascending / descending portion, and the suspending / descending portion is suspended at the respective tip ends of the suspending arms, and the distance between the fulcrums of the wires of the fixed portion is increased. Since the distance between the fulcrum of the wire of the fixed part and the distance between the hanging points of the lifting part are both large in the electric lifting device of the lighting fixture of the present invention, the lifting part is relatively moved with respect to the fixed part when descending. It is possible to prevent it from rotating to the end and being unable to be stored in the fixed portion.

[0012]

Embodiments of the present invention will be described below with reference to the accompanying drawings. The main part of the present invention is the structure of the components of the electric lifting device for lighting equipment, but prior to the description thereof, the entire electric lifting device will be described. FIG. 1 shows the entire electric lifting device for a lighting fixture. The electric lifting device 1 for a lighting fixture is composed of a fixed part 2 fixed to a ceiling or the like, and an elevating part 3 that is hung by a wire of the fixed part 2 and is moved up and down by operating an elevating switch. Lifting part 3
The lower surface of has a lighting fixture mounting portion 3a, to which a lighting fixture (not shown) is mounted. In use, the elevating part 3 is raised by winding up the wire, is housed and fixed inside the fixing part 2 as shown in the figure, and illuminates from a high position near the ceiling. Further, at the time of maintenance, the wire is paid out to lower only the elevating part 3 to a height close to the floor surface, and the lighting fixture is replaced.

FIG. 2 schematically shows the structure of the electric lifting device 1. The fixed portion 2 has a lifting motor 4, a wire drum 5, and a plurality of pulleys 6 inside. In FIG.
The elevating part 3 is housed inside the fixed part 2. A pair of pulleys 7 are attached inside the elevating part 3.
A wire 7 is wound around the wire drum 5, the pulley 6, and the pulley 7 to suspend the elevating part 3. A movable contact 9 is provided upright on the upper end surface of the elevating part 3. FIG. 2 shows an electric lifting device 1 for a lighting device with one lamp and two contacts.
And has a pair of movable contacts 9. The movable contact 9 has a structure in which the elevating part 3 is housed in the fixed part 2,
It is configured to contact a fixed contact 10 provided on the fixed portion 2 side. Inside the fixed part 2, a lock case 11 for housing and fixing the elevating part 3 is provided. The lock case 11 has a lock claw 12 on the inner peripheral surface thereof, and the lock claw 12 engages with a lock portion 13 formed on the outer peripheral surface of the elevating part 3 when the elevating part 3 is housed. By the engagement of the lock claw 12 and the lock portion 13, the elevating portion 3 is fixed inside the fixing portion 2.

FIG. 3 shows a cross section of the electric lifting device 1 as seen from the direction AA shown in FIG. As shown in FIG.
In the state where the elevating part 3 is housed inside the fixed part 2, its movable contact 9 comes into contact with the fixed contact 10 provided on the fixed part 2, and an electric current is supplied to the elevating part 3.

FIG. 4 shows a cross section of the elevating part 3. The elevating part 3 has a cylindrical frame body 14 having an open lower end. The lock portion 13 is provided on the outer peripheral surface of the frame body 14.
Are formed. On the upper end surface of the frame body 14, a pair of movable contacts 9 are provided upright through the wall body of the frame body 14 as shown in the figure. A screw terminal plate 15 is horizontally mounted inside the frame body 14. The screw terminal plate 15 is provided with a screw terminal 16 in accordance with a mounting position of a lighting device (not shown). The upper end of the screw terminal 16 and the movable contact 9
The lower ends of are connected by jumper wires 17.
By changing the arrangement of the screw terminals 16 according to the number of light bulbs of the lighting fixture, it is possible to prevent the lighting fixture from being attached incorrectly.

FIG. 5 shows the elevating part 3 as seen from below. FIG. 5A shows an arrangement of screw terminals 16 for a two-lamp type lighting fixture, in which two pairs of screw terminals 16 are attached to a screw terminal plate 15, and each screw terminal pair 16 is attached so as to be separated from each other. ing. FIG. 5B shows the arrangement of the screw terminals 16 for the one-lamp type lighting fixture, and a pair of screw terminals 16 is attached to the screw terminal plate 15. FIG. 5C shows 3
The arrangement | positioning of the screw terminal 16 for a light type lighting fixture is shown, and three pairs of screw terminals 16 are attached to the screw terminal plate 15. As shown in FIG.
Since the elevating part 3 has the above-described configuration, when the lighting equipment is replaced, the worker simply connects the lead wire of the lighting equipment to the screw terminal 15 of the screw terminal plate 15 to move the lighting equipment to the movable contact 9. They can be connected, and there is no need to directly connect the movable contact 9 and the lead wire of the lighting fixture in a narrow space inside the elevating part 3 as in the conventional case. This makes it extremely easy to replace the lighting fixture and prevent wiring mistakes. Further, since the screw terminals 16 are provided in advance according to the number of light bulbs of the lighting fixture, it is possible to prevent the lighting fixture from being attached incorrectly.

FIG. 6 shows an elevating part 3 according to the present invention which is constructed so as to be disassembled. Since the frame is integrally formed in the elevating part of the conventional electric elevating device, the wire cannot be removed from the elevating part, and the movable contact cannot be easily replaced. On the other hand, the lifting unit 3 of the present invention
As shown in the figure, is composed of a cylindrical frame member 14 a and a movable contact unit 18. The movable contact unit 18 includes a part 14b of the frame member and the movable contact 9
And a screw terminal 16 and a conductive wire. A pair of pulleys 7 is detachably attached to the inner peripheral surface of the cylindrical frame member 14a, and a movable contact unit 18 is detachably attached to the upper end of the frame member 14a. By removing the movable contact unit 18, the elevating part 3 can be disassembled as shown in the figure, and the movable contact unit 18 can be easily replaced as a unit.

FIG. 7 shows the lock case 11 and the elevating part 3. The electric lifting device 1 of the present invention, as shown in the figure, prevents rotation of the lifting part 3 when moving up and down.
A guide groove 19 is provided on the peripheral wall 11 a of the lock case 11. When the elevating part 3 is moved up and down, the wire 8 is guided by the guide groove 19 of the lock case 11 as shown in the figure.
To prevent the lifting unit 3 from rotating. As a result, when the wire 8 is wound up, the elevating part 3 is maintained in a predetermined direction and guided inside the lock case 11, and the lock claw 12 is fixed by engaging with the lock part 13 of the elevating part 3. ..

FIG. 8 shows an electric lifting device in which a lifting arm is provided in the lifting part. Lifting part 3 of this electric lifting device 1
Has a pair of hanging arms 20 on the peripheral wall. The hanging arm 20 is provided parallel to the long side of the bottom surface of the fixed portion 2. The elevating part 3 has a wire 8 at the tip of each hanging arm 20.
Suspended by. The lock part 13 is provided on the outer peripheral surface of the elevating part 3 in a direction orthogonal to the hanging arm 20. The hanging points of the wires 8 on the fixed portion 2 side are arranged apart from each other. This allows the wires 8,8
The distance between them becomes large, and the rotation of the elevating part 3 can be prevented.

[0020]

As is apparent from the above description, the screw terminal plate is provided in the frame of the elevating part, the screw terminal is attached to the screw terminal plate according to the mounting position of the lighting fixture, and the movable contact and the screw terminal are connected. According to the electrically-powered lifting / lowering device for a lighting fixture of the present invention, which is pre-connected, since the movable contact and the screw terminal are pre-connected, it is sufficient to connect the lead wire of the lighting fixture to the screw terminal when replacing the lighting fixture. It is possible to obtain an electric lifting device that can prevent wiring mistakes and can easily replace a lighting fixture.

According to the electric lifting device for the lighting apparatus of the present invention, in which the elevating part is composed of the cylindrical frame member and the movable contact unit, the pulley is detachably attached to the inner periphery of the frame member and the wire is attached to the pulley. Since the movable contact unit is removably attached to the upper end of the frame member after being wound, only the movable contact unit can be easily removed without removing the fixed portion during maintenance.

According to the electric lifting device of the lighting apparatus of the present invention in which the lock case is provided on the fixed portion and the guide groove of the wire is formed on the peripheral wall of the lock case, the lifting portion is lowered when the lifting portion is lowered. Since the hanging wire engages with the guide groove provided in the lock case, it is possible to obtain an electric lifting device that prevents the lifting unit from rotating with respect to the fixed unit when it is lowered and does not interfere with the fixed unit during storage.

According to the present invention, a pair of suspending arms are provided on the peripheral wall of the ascending / descending portion, and the ascending / descending portion is suspended at the respective tip ends of the suspending arms, and the distance between the fulcrums of the wires of the fixed portion is increased. According to the electric lifting device of the lighting fixture, the distance between the wires for suspending the lifting unit is increased, the rotation of the lifting unit is prevented, and the lifting unit does not interfere with the fixed unit during storage can be obtained. ..

[Brief description of drawings]

FIG. 1 is a perspective view showing an entire electric lifting device for a lighting device of the present invention.

FIG. 2 is a sectional view schematically showing the structure of an electric lifting device for a lighting fixture of the present invention.

FIG. 3 is a sectional view schematically showing the structure of an electric lifting device for a lighting fixture of the present invention.

FIG. 4 is a cross-sectional view schematically showing the structure of a lifting unit of the electric lifting device.

FIG. 5 is a bottom view of the elevating part showing an arrangement of screw terminals.

FIG. 6 is an exploded perspective view of an elevating part configured to be disassembled.

FIG. 7 is a perspective view showing a lock case having guide grooves and an elevating part.

FIG. 8 is a perspective view showing an electric lifting device in which a hanging arm is provided on an outer peripheral surface of a lifting unit.

[Explanation of symbols]

 1 Electric Lifting Device 2 Fixed Part 3 Lifting Part 4 Lifting Motor 5 Wire Drum 6 Pulley 7 Pulley 8 Wire 9 Moving Contact 10 Fixed Contact 11 Lock Case 14 Frame 15 Screw Terminal Plate 16 Screw Terminal 18 Moving Contact Unit 19 Guide Groove 20 Arms for hanging

Claims (4)

[Claims] 1. A fixing part having a lifting motor, a wire, a wire drum, and a plurality of pulleys, and a lighting fixture mounting part for mounting a lighting fixture on a lower surface thereof. And a movable contact provided on the upper surface of the elevating part and a fixed part provided on the fixed part. In an electric lifting device for a lighting device configured to be energized by contact with a contact and to draw down a wire, the lifting unit is configured to hang down below a fixed unit, wherein the lifting unit includes a frame body whose lower end is open. The movable contact is erected through the upper end wall of the frame body, and a screw terminal plate is horizontally provided inside the frame body. The screw terminal plate is provided with a screw terminal according to the mounting position of the lighting fixture. Penetrated Fixed Te, electric lifting device of the luminaire, characterized in that previously connected the lower end of the upper end and the movable contact of the screw terminals through the conductive wires. 2. A fixing part provided with a lifting motor, a wire, a wire drum, and a plurality of pulleys, and a lighting fixture mounting part for mounting a lighting fixture on a lower surface, which is suspended by the wire and is used for a lifting switch. And a movable contact provided on the upper surface of the elevating part and a fixed part provided on the fixed part. In the electric lifting device for a lighting device configured to be energized by contact with a contact and to be drawn down by a wire, the lifting unit is configured to hang down the lifting unit by a cylindrical frame member and a movable contact unit. A pulley is detachably attached to the inner periphery of the frame member, the wire is wound around the pulley, and a movable contact unit is detachably attached to the upper end of the frame member. Electric lifting device of the luminaire, wherein the door. 3. A lifting part, a fixing part having a lifting motor, a wire, a wire drum, and a plurality of pulleys, and a lighting fixture mounting part for mounting a lighting fixture on a lower surface of the lifting switch. And a movable contact provided on the upper surface of the elevating part and a fixed part provided on the fixed part. An electric lifting device for a lighting device configured to be energized by contact with a contact and to be drawn out of a wire so that the elevating part hangs down below a fixing part, and the elevating part is housed and fixed inside the fixing part. A lock case is provided, and a guide groove for guiding the wire is engraved on a peripheral wall of the lock case. 4. A lifting part, a fixing part including a lifting motor, a wire, a wire drum, and a plurality of pulleys, and a lighting fixture mounting part for mounting a lighting fixture on a lower surface thereof. And a movable contact provided on the upper surface of the elevating part and a fixed part provided on the fixed part. An electric lifting device for a lighting device configured to be energized by contact with a contact point and to draw down a wire to cause the lifting unit to hang down below a fixed unit, wherein a pair of suspending arms are provided on a peripheral wall of the lifting unit. An electric hoisting device for a lighting fixture, wherein the hoisting part is hoisted at each tip of the hoisting arm and a distance between fulcrums of wires of a fixing part is increased.