JPH0317161B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for adjusting the inclination angle of a lamp shaft for a lighting device.

SUMMARY OF THE INVENTION An object of the present invention is to provide a lamp support shaft angle adjusting device that has the function of firmly holding the vertical portions of a pair of lamp support shafts so that they are parallel to each other.

The configuration of the present invention will be described in detail below based on embodiments shown in the accompanying drawings.

Reference numeral 2 denotes a workbench made of a drawing board, and a vise-type fixture 4 is fixed to one side of the workbench.
A pair of mutually parallel shaft holders 6 formed in a direction perpendicular to one side of the workbench 2 have a lower horizontal portion of a pair of pipe-shaped lamp support shafts 8 and 10 arranged parallel to each other. The outer peripheral surfaces of the parts are rotatably fitted together via a retaining mechanism. lamp shaft 8,
The curved portions of the plate members 12 and 14 are fixed to the outer peripheral surface of the vertical portion 10 by welding. Arcuate elongated holes 16 and 18 are transparently provided in the portions of the plate members 12 and 14 that overlap with each other. Long hole 16,1
The arcs M1 and M2 consisting of the respective central axes of 8 are points P1,
It is set on a circular line centered at P2. Said P1 passes through the middle part of the plate member 12, and the plate member 1 has a straight line L1 perpendicular to the support shaft 8 and a center line L2 of the support shaft 8.
P2 is the intersection point of the projected view on the plate member 14 surface of the straight line L3 passing through the middle part of the plate member 14 and perpendicular to the support shaft 10 and the center line L4 of the support shaft 10. be. 20 is the long hole 1
The roller 20 is formed to have a slightly smaller outer diameter than the width X of the rollers 6 and 18.
They are slidably inserted into the elongated holes 16 and 18 at an intersection point C where the entire widths of the widths in the X direction completely coincide with each other. Said roller 2
The width in the thickness direction of 0 is set to be slightly smaller than the thickness width Z of the overlapping portion of the plate members 12 and 14. A shaft body 22 is slidably inserted into the shaft hole of the roller 20, and a plate 22a is attached to one end of the shaft body 22.
is formed, and a threaded portion is formed on the other side of the shaft body 22. The plate 22 has a protrusion 26 for preventing rotation.
is formed. 28 is a washer, 30 is a shaft body 22
It is a molding that screws into the threaded part of the A lighting fixture 32 is attached to the upper horizontal portion of the lamp support shafts 8 and 10.

Next, the operation of this embodiment will be explained.

If you want to tilt the vertical parts 8a, 10a of the lamp shafts 8, 10 in the left-right direction in FIG.
The molding 30 is rotated on the shaft body 22 in a direction that loosens the screw relative to the threaded portion. Next, for example, when the support shafts 8, 10 are pressurized in the right direction in FIG. The vertical portions 8a, 10a of 10 are inclined to the right. As the support shafts 8 and 10 are tilted, the plate members 12 and 14 are displaced from each other. At this time, the roller 20 rises relative to the elongated hole 16 and descends relative to the elongated hole 18 as the intersection point C moves due to the shift in the positional relationship between the plate members 12 and 14. do. When the roller 20 is locked to the upper end of the elongated hole 16 or the lower end of the elongated hole 18, the support shafts 8, 10
In FIG. 2, tilting to the right is prevented. The vertical portions 8a, 10 of the support shafts 8, 10 are tilted in the horizontal direction in FIG. 2 within the tiltable range.
When a is set to the desired inclination angle, molding 3
0 into the threaded portion of the shaft body 22, and the overlapping portion of the plate members 12, 14 is pressed between the washer 28 and the plate 22a to fix the plate members 12, 14. Note that the roller 20 may not be provided and the shaft body 22 may be inserted into the elongated holes 16 and 18 as shown in FIG. teeth 36, 36a, 38, 38a are formed on the teeth 36, 36a, 38, 38a, and rollers 20 are formed on the teeth 36 and 38a or on the teeth 36a and
The teeth 40 formed in the above may be engaged with each other. Incidentally, when a load is applied to the vertical portions 8a, 10a of the support shafts in a direction in which they move toward and away from each other, the load is stopped by the roller 20 or the shaft body 22 and the wall surfaces of the elongated holes 16, 18.

As described above, in the present invention, the shafts are fitted into the arcuate long holes of the plate members fixed to the vertical parts of the pair of lamp support shafts, so that the load is applied in the direction in which the lamp support shafts 8 and 10 approach and separate. The wall of the arcuate long hole and the shaft act as a stopper to firmly hold the lamp shaft, and the clamping force of the molding screwed onto the shaft allows the lamp shaft to be held. It has the advantage of being able to be firmly fixed at any inclination angle.

[Brief explanation of the drawing]

The figure shows one preferred embodiment of the present invention.
The figure is an overall external view, Figure 2 is a rear view, Figure 3 is a side view, Figure 4 is a sectional view taken along line A-A, Figure 5 is a sectional view taken along line B-B, Figure 6 is a sectional view, and Figure 6 is a sectional view taken along line BB. FIG. 7 is a sectional view showing another embodiment, and FIG. 8 is an explanatory diagram showing another embodiment. 2...Workbench, 4...Vise type fixture, 6...Shaft holder, 8, 10...Lamp support shaft, 12, 14...
... Plate member, 16, 18 ... Long hole, 20 ... Roller, 22 ... Shaft body, 22a ... Board, 30 ... Mall, 32 ... Lighting equipment.

Claims (1)

[Claims] 1. Plate members 12,
14 is fixed, and arcuate elongated holes 16 and 18 are transparently provided in the mutually overlapping portions of the pair of plate members 12 and 14,
The center points of the arcs M1 and M2 of the long holes 16 and 18 are set on the center lines L2 and L4 of the lamp shaft vertical parts 8a and 10a fixed to the plate members 12 and 14 in which the long holes 16 and 18 are formed, respectively. The shaft body 22 is loosely fitted into the long holes 16 and 18, and the shaft body 22 is set at one point P1, P2 of
A lamp shaft angle adjusting device for a lighting device, characterized in that a plate 22a is provided at one end, a threaded portion is formed at the other end, and a molding 30 is screwed into the threaded portion.