JPH078554Y2 - Lifting device for lighting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention mainly relates to an elevating device for electrically setting a lighting fixture or the like on a ceiling.

(Prior Art) Recently, an elevating type lighting fixture is being used for a high ceiling such as a blow-out of a house.

Conventionally, as this type of lifting device, a winding device that winds a wire around the lifting device body mounted in the ceiling, and a lifting body that is attached to the lower side of the lifting device body, such as a lighting fixture that is raised and lowered by the wire In the lifting device having the above, when the lifting body is suspended by two or more wires, if the wires are lifted while being entangled with each other, the wires may be cut or the lifting body may be damaged, which is dangerous.

When such wire entanglement occurs, conventionally as a lifting device for safety, a means for detecting wire entanglement,
This means is provided with control means for temporarily stopping, stopping, or reversing the ascending operation (see, for example, Japanese Utility Model Publication No. 60-6970). (Problems to be solved by the invention) In the configuration, when there is entanglement between the rising wires, the switch is operated to stop the motor and stop the motor until the entanglement is released.Therefore, it takes a little time for the wires to return to normal. There was a problem that it took.

The present invention solves the above-mentioned problems, and an object thereof is to provide an elevating device in which the rotation itself of an elevating body that causes entanglement is initially controlled or converged at an early stage to maintain its safety. It is to be.

(Means for Solving the Problems) In order to achieve the above object, a lifting device such as a lighting device according to the present invention includes a winding device that winds a wire around a lifting / lowering device body mounted on a ceiling, and a lower part of the lifting / lowering device body. In an elevating device having an elevating body to which a lighting fixture or the like that moves up and down by the wire is attached, a center of a substantially I-shaped balancer is rotatably supported on a vertical support shaft provided in the center of the elevating body. Horizontally, on the other hand, a plurality of collision surfaces with both ends of the balancer are projected inward from the inner wall of the lifting body, and the collision of the balancer and the lifting body is caused by the rotation of the lifting body due to the wire entanglement. This is repeated so as to damp the rotation of the lifting body.

(Operation) This elevating device utilizes the inertia of the balancer, and even if the elevating body rotates in one direction due to the wire entanglement, etc., it is rotatably supported by the vertical support shaft provided in the center of the elevating body. Since the substantially I-shaped balancer that is horizontally arranged does not rotate due to inertia, a plurality of collision surfaces projecting inward from the inner wall of the lifting body collide with both ends of the balancer and the lifting body moves. Rotation in the one direction is blocked. Next, the lifting and lowering body which has begun to rotate in the opposite direction is prevented from rotating due to the collision between the collision surface and the balancer again. By repeating such a collision, the rotation of the lifting body is rapidly attenuated.

(Embodiment) An embodiment of the present invention is shown in FIG. 1 and FIG. As shown in the figure, the lifting / lowering device body 1 is horizontally attached to a building structure, for example, a ceiling by a holt or the like, and is provided with a winding device such as a motor or a wire winding drum (not shown). . Reference numeral 2 is an elevating body, and a wire 3 is provided at the lower center of the elevating device body 1.
The wire 3 is suspended by a winding device in the main body 1 and its end is fixed to the main body 1 via two rollers 3a and 3b attached to the lifting body 2, and the wire 3 is wound. The lifting / lowering body 2 is moved up and down depending on whether it is taken or rewound. A hanging metal fitting 4 is attached to a lower portion of the lifting body 2, and a cover 5 for covering an opening opened in the ceiling is hung on the hanging metal fitting 4 by a rotary support shaft. Further, a lighting device (not shown) is attached to the cover 5. Then, the elevating body 2 is raised and the lock bar 6 provided on the elevating body 2 is held by the stopper 7 provided in the main body 1.

In such a structure, a vertical support shaft 8 is provided in the center of the lifting body 2, and a substantially I-shaped balancer 9 is rotatably supported by the support shaft 8 at the center thereof and arranged horizontally. ,
A plurality of collision surfaces 10 that collide with both ends of the balancer 9 are provided inward from the inner wall of the lifting body 2. That is,
The well-known balancer inertia is utilized, and when the lifting / lowering body 2 rotates due to the twist of the wire 3, the balancer 9 supported by the support shaft 8 does not rotate due to the inertia. Therefore, the rotation of the lifting body 2 causes the collision surface 10 to move.
And the balancer 9 collide with each other to prevent the elevation body 2 from rotating. After that, the lifting body 2 reverses and collides with the balancer 9 again.
In this case, the balancer 9 rotates in the direction opposite to the lifting body 2. While repeating such a collision, the rotation of the lifting / lowering body 2 is rapidly attenuated. Incidentally, such a damping means may be filled with an appropriate amount of liquid such as water in a container instead of the balancer, or may be filled with granules such as steel balls. The same applies when a magnet is used instead of the balancer and the attractive force of the magnetic force is used.

(Effect of the Invention) Since the present invention is configured as described above, when the lifting body suspended by a plurality of wires rotates and the wire is entangled, the balancer provided in the lifting body Repeated collisions with the lifting body. Therefore, since the rotation of the lifting body is rapidly attenuated, there is an effect that safety can be secured.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the lifting device of the present invention, and FIG. 2 is a sectional view taken along line AA of FIG. 1 ... Lifting device main body, 2 ... Lifting body, 3 ... Wire, 3a, 3b ...
Roller, 4 ... Hanging fitting, 5 ... Cover, 6 ... Lock rod, 7 ...
Stopper, 8 ... Support shaft, 9 ... Balancer, 10 ... Collision surface

Claims (1)

[Scope of utility model registration request] 1. A lifting device comprising: a winding device for winding a wire around a lifting / lowering device main body mounted on a ceiling; and a lifting / lowering body having a lighting fixture or the like attached to the lower part of the lifting / lowering device main body for lifting / lowering with the wire, A vertical support shaft provided in the center of the lifting body rotatably supports the central portion of the substantially I-shaped balancer and arranges the balancer horizontally, while the inner wall of the lifting body collides inward with both ends of the balancer. Raising and lowering of lighting equipment, etc., in which a plurality of surfaces are projected and the collision of the lifting and lowering body due to the wire entanglement causes the collision surface of the balancer and the lifting and lowering body to repeatedly collide to attenuate the rotation of the lifting and lowering body. apparatus.