JPH0542568Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to an elevating device for elevating and lowering lighting equipment and the like.

[Conventional technology]

A conventional lifting device is shown in FIGS. 8 and 9.
In the figure, 50 is a main body, and an elevating member 51 is suspended within the main body 50 by a wire rope so as to be movable up and down. Further, the main body 50 is fixed to a ceiling 53 via an arm 52. The arm 52 spans both sides of the main body 50 and is attached to the main body 5 with a bolt 54.
It is fixed at 0.

10 and 11 show a sloped ceiling 55
It is shown installed on. As shown in FIG. 10, when the ceiling 55 is inclined in a direction perpendicular to the axial direction of the bolt 54, the main body 50 can be rotated to a horizontal position using the bolt 54 as a fulcrum. However, as shown in FIG. 11, if the ceiling 55 is inclined in the axial direction of the bolt 54, the main body 50
is not in a horizontal position.

[The problem that the idea attempts to solve]

As described above, in the conventional lifting device, the main body 50 could only be kept in a horizontal position with respect to the slope of the ceiling 55 in one direction. For this reason, the main body 50
When trying to smoothly raise and lower the elevating member 51 with the arm 52 in a horizontal position, the main body 50 should be mounted so that the axial direction of the bolt 54 that attaches the arm 52 is perpendicular to the slope of the ceiling 55. Without it, it would be impossible to maintain the main body 50 in a horizontal position.

The purpose of this invention is to provide a lifting device that can always keep the main body in a horizontal position no matter which direction it is mounted with respect to the inclination of the mounting portion.

[Means to solve the problem]

The lifting device of this invention has arms spanning both sides of a main body, and a lifting member is suspended from the main body so as to be able to rise and fall freely. A pair of arc-shaped convex portions located on the same circumference and extending vertically is provided on both sides of the main body, and a pair of concave portions that can slide into contact with the convex portions are formed at both ends of the arm. The mounting screw is inserted into the vertically extending long hole formed in the recess and fastened to the protrusion.

[Effect]

According to the configuration of this invention, the main body is rotated with respect to the arm using the mounting screw as a fulcrum, and when the mounting part is inclined at right angles to the axial direction of the mounting screw, the main body is placed in a horizontal position. can be kept. Furthermore, by sliding the recessed portion of the arm in the vertical direction relative to the convex portion of the main body, the main body can be maintained in a horizontal position when the mounting portion is inclined in the axial direction of the mounting screw. In this way, the main body can be rotated in two mutually perpendicular directions with respect to the arm, and therefore the main body can always be kept in a horizontal position no matter which direction it is mounted relative to the inclination of the mounting part. .

〔Example〕

An embodiment of this invention will be described based on FIGS. 1 to 7.

First, the overall structure of the lifting device will be explained using FIGS. 1 to 3. In the figure, 10
is a main body, and on both sides of the main body 10 there are protrusions 11,
12 are formed. The convex portions 11 and 12 have spherical surfaces centered on the center P of the main body 10. Further, 13 is an arm extending over both sides of the main body 10. At both ends of the arm 13, there is a main body 1.
A pair of recesses 1 that can slide into both convex parts 11 and 12 of 0
4 and 15 are formed. Elongated holes 16 and 17 extending vertically are formed in the recesses 14 and 15.
Screw holes 20 are provided in the protrusions 11 and 12 of the main body 10 by inserting mounting screws 18 and 19 into the long holes 16 and 17.
(Figure 5). Furthermore, in the main body 10,
An elevating member 21 is provided which is movably suspended from a wire rope (not shown) or the like, and a lighting device (not shown) is attached to the elevating member 21.

Next, the installation of the lifting device will be explained. Connect the bolt 23 protruding from the lower surface of the ceiling 12 to the arm 13.
the nut 24 and the lock nut 25. The elevating device is maintained in a horizontal position so that the elevating member 21 can be smoothly moved up and down. That is, as shown in FIG.
is inclined in the axial direction of the mounting screws 18 and 19, the recesses 14 and 15 of the arm 13 slide in the vertical direction relative to the protrusions 11 and 12 of the main body 10. As shown in FIG.
The mounting screw 18 on the opposite side of the arm 13 is located at the upper part of the elongated hole 16, so that the main body 10 is in a horizontal position. Furthermore, as shown in FIG.
The main body 10 is rotated with respect to the arm 13 using fulcrums 8 and 19 to bring the main body 10 into a horizontal position.

According to the elevating device configured in this way, the main body 10 can be rotated with respect to the arm 13 in two directions orthogonal to each other. For this reason, the ceiling 22
The main body 10 can always be kept in a horizontal position no matter what direction it is attached to with respect to the inclination of the main body 10.

Furthermore, as shown in FIG. 7, by making the length of the arm 13 longer than half the width of the main body 10,
The arm 13 can be folded horizontally for compact packaging.

In the above embodiment, the convex portions 11 and 12 have a spherical shape, but they may have a circular arc shape that simply extends vertically.

[Effect of idea]

According to the lifting device of this invention, the main body is rotated relative to the arm using the mounting screw as a fulcrum, and when the mounting part is inclined at right angles to the axial direction of the mounting screw, the main body can be moved to a horizontal position. can be kept.
Furthermore, by sliding the recessed portion of the arm in the vertical direction relative to the convex portion of the main body, the main body can be maintained in a horizontal position when the mounting portion is inclined in the axial direction of the mounting screw. In this way, the main body can be rotated in two directions perpendicular to each other with respect to the arm, and therefore the main body can always be kept in a horizontal position no matter which direction it is mounted with respect to the inclination of the mounting part. This effect can be obtained.

[Brief explanation of drawings]

Fig. 1 is a front view of an embodiment of this invention, Fig. 2 is a front view of its installed state, Fig. 3 is a side view of its installed state, Fig. 4 is a front view of its inclined part mounted state, and Fig. 4 is a front view of its installed state. Figure 5 is a partial sectional view of the same, Figure 6 is a side view of the inclined part attached, Figure 7 is a side view of the same, and Figure 8 is a side view of the inclined part.
The figure is a side view of the conventional example, Figure 9 is its front view, and Figure 1
0 is a side view of the inclined portion attached, and FIG. 11 is a front view of the inclined portion attached. 10... Main body, 11, 12... Convex portion, 13...
Arm, 14, 15... recess, 16, 17... elongated hole, 18, 19... mounting screw, 21... lifting member.

Claims (1)

[Scope of utility model registration request] A main body having a pair of arc-shaped protrusions located on the same circumference on both sides and extending vertically, and a pair of recesses that extend over both sides of the main body and can slide into the protrusions at both ends. A lifting device comprising: an arm having a long hole extending vertically in the recess; a mounting screw inserted into the long hole and fastened to the protrusion; and a lifting member suspended from the main body so as to be movable up and down.