JPS6217928Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a device for fixing a lamp and an arm, and more specifically, mounting screws 2 are protruded from both outer surfaces of the lamp body 1, and an approximately inverted U-shaped arm 3 is mounted on both sides of the lamp body 1. Notch groove 4 opening at the front edge of the lower end of the piece
The mounting screw 2 is inserted into the notch groove 4, and the spacer 10 is inserted between the outer periphery of the mounting screw 2 between both outer surfaces of the lamp body 1 and the lower ends of both sides of the arm 3. A retaining washer 6 having a retaining piece 5 that forms a gap between the outer surface and both sides of the arm 3 and protruding toward the lamp body 1 side is inserted into the mounting screw 2 from the outside of both sides of the arm 3. This is a device for fixing a lamp and an arm, in which a tightening nut 7 is screwed together, and the retaining pieces 5 of the retaining washer 6 are positioned at the rear end edges of both sides of the arm 3.

In conventional illumination direction adjustable lighting equipment, the first
As shown in the figure, the mounting screws 2 protruding from both outer surfaces of the lamp body 1 were inserted into the mounting holes 8 of the arm 3' and the tightening nuts 7 were screwed on. In order to pass the mounting screw through the mounting hole, the arm must be widened and installed, and the arm is difficult to flex, especially when the height H of the arm is reduced, making it difficult to install the arm. In addition, as shown in Fig. 2, a notch groove 4 is provided at the lower end of both sides of the arm 3, and a tightening nut 7 is screwed onto the mounting screw 2 inserted into the notch groove 4, although assembly is easy. If the tightening nut loosens inside and an external force is applied to the lamp, there is a risk that the arm will separate from the lamp body and the lamp will fall.

The present invention was made in view of the above-mentioned drawbacks of the conventional devices, and its purpose is to provide a lamp and an arm that allow the arm to be easily attached to the lamp body, and that prevent the lamp body from falling from the arm. to provide fixation devices.

The present invention will be explained in detail below with reference to the accompanying drawings. Reference numeral 9 denotes a hanging shaft, which is suspended from the ceiling, for example. Hanging shaft 9
The center of a substantially inverted U-shaped arm 3 is rotatably attached to the lower end of the arm 3, and the arm 3 can rotate 360 degrees around a hanging shaft 9. The lower ends of both sides of the arm 3 are cut out with grooves 4 that open at the front edges thereof, and a mounting screw 2, which will be described later, can be introduced into the grooves 4 from the opening side. The cutout groove 4 may be cut out diagonally upward from the bottom side toward the opening side. Reference numeral 1 denotes a lamp body with an open front, and a lighting fixture such as a light bulb is installed inside the lamp body 1. Mounting screws 2 are inserted into the side walls of the lamp body 1 from the inside toward the outside, and are projected from both outer surfaces of the lamp body 1 on the same axis. This mounting screw 2 includes, in order from the inside, a spacer 10 for improving the slippage between the lamp body 1 and the arm 3 and making it easier to turn the lamp body 1 up and down, a notch groove 4 in the arm 3, and the lamp body. A pair of side pieces 6a toward the 1 side,
A U-shaped retaining washer 6 with a protruding portion 6b and a screw-type tightening nut 7 are inserted, and the arm 3 is thereby attached to the lamp body 1 so as to straddle the top of the lamp body 1. As shown in FIG. 4, the lamp body 1 is designed to swing up and down about the mounting screw 2. As shown in FIG. 6, the retaining washer 6 is curved outward in a slightly convex shape, and when the tightening nut 7 is tightened, the retaining washer 6
is slightly bent and prevents the tightening nut 7 from loosening due to the reaction force, and both sides 6 of the retaining washer 6
a and 6b are in contact with the front and rear edges of the lower end of the arm 3 to prevent the arm 3 from moving back and forth with respect to the lamp body 1, and in particular, the rear side piece 6b is used as a retaining piece 5. Even if the tightening nut 7 becomes loose, the arm 3 is prevented from coming off backward from the mounting screw 2.

Also, when assembling, use the mounting screws 2 as described above.
There is no need to sequentially insert parts from the inside.
For example, the spacer 10, retaining washer 6, and tightening nut 7 are loosely inserted into the mounting screw 2 of the lamp body 1 in advance, and the lower ends of both sides of the arm 3 are inserted into the spacer without expanding the arm 3. 10 and the retaining washer 6, insert the mounting screw 2 into the notch groove 4 of the arm 3, tighten the tightening nut 7, and fit the retaining washer 6 to the lower end of both sides of the arm 3. Assembly is easy, and the lamp body 1 and arm 3 will not come off even if the tightening nut 7 is loosened because of the rear side piece 6b which is the retaining piece 5.

As described above, the present invention has mounting screws protruding from both outer surfaces of the lamp body, and cutout grooves that open at the front edge of the lower ends of both sides of the approximately inverted U-shaped arm that straddles the lamp body. Insert the screw into the notch groove, and insert a spacer around the outer periphery of the mounting screw between both outer surfaces of the lamp body and the lower ends of both sides of the arm to create a gap between both outer surfaces of the lamp body and the lower ends of both sides of the arm. form,
Insert the retaining washer, which has a retaining piece that protrudes toward the lamp body, into the mounting screw from the outside of both sides of the arm, and screw on the tightening nut. Because it is located on the rear edge, the mounting screw can be inserted into the notched groove from the opening side without having to widen the arm, even though the retaining washer that prevents the arm from coming off is inserted into the mounting screw. Although the arm can be easily attached to the lamp body, and the mounting screws are inserted into the notched grooves on the front edge of both sides of the arm, there are holes located on the rear edges of both sides of the arm. The retaining piece of the retaining washer prevents the arm from coming off backwards, and there is an advantage that the lamp body will not fall even if the mounting screw becomes loose. Furthermore, since there is no need to expand the arm during assembly, the height H of the arm can be lowered, making the lamp more compact and inexpensive.Furthermore, the retaining washer also serves as a washer, so flat washers, spring washers, etc. can be omitted. There are advantages that can be achieved.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway exploded perspective view showing a conventional example, Fig. 2 is a partially cutaway exploded perspective view showing another conventional example, and Fig. 3 is a partially cutaway front view showing an embodiment of the present invention. 4 is a side view of the same as above, FIG. 5 is a partially cut away exploded perspective view of same as above, and FIG. 6 is an enlarged sectional view taken along line A--A of FIG. 4. 1... Lamp body, 2... Mounting screw, 3... Arm, 4... Notch groove, 5... Retaining piece, 6... Retaining washer, 7... Tightening nut.

Claims (1)

[Scope of utility model registration request] Mounting screws protrude from both outer surfaces of the light fixture body, cut out grooves that open at the front edges of the lower ends of both sides of the roughly inverted U-shaped arms that straddle the light fixture body, and insert the mounting screws into the notch grooves. Then, a spacer is provided between the outer periphery of the mounting screw between both outer surfaces of the lamp body and the lower ends of both side pieces of the arm to form a gap between both outer surfaces of the lamp body and the lower ends of both side pieces of the arm. Insert a retaining washer with a retaining piece protruding to the side from the outside of both sides of the arm into the mounting screw, screw the tightening nut, and insert the retaining piece of the retaining washer into the rear end of both sides of the arm. A fixing device for the lamp and arm located at the edge.