JPH0446328Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a lighting fixture in which a lighting section is rotatably provided with respect to a base section.

(Prior Art) As conventional lighting equipment, there are those shown in FIGS. 6 and 7. In Figure 6, 1 is the base, 2
1 is a stay erected on a base 1, and 3 is an umbrella rotatably attached to the stay via a bracket 4. A light bulb 5 is arranged inside the umbrella 3.
The brake mechanism that prohibits free rotation of the umbrella 3 is the 7th one.
The configuration is as shown in the figure.

In FIG. 7, the bracket 4 is the umbrella mounting part 4.
It has a substantially U-shape consisting of a and stay abutting portions 4b and 4c extending from both ends of the umbrella mounting portion 4a in the opposite direction of the umbrella. Further, holes 4d and 4e are bored in the stay contact portions 4b and 4c. On the other hand, holes 2a and 2b with internal threads are formed at the tips of side surfaces 2c and 2d of the stay 2. The tip of the stay 2 is inserted into the space formed by the umbrella attachment part 4a and the stay contact parts 4b, 4c, and the bracket 4 and stay 2 fit loosely into the holes 4d, 4e,
It is rotatably attached using screws 6 and 7 that are screwed into parts a and 2b. Further, 8 is a power cord that is inserted into the stay 2 and supplies electricity to the light bulb 5.

In such a configuration, since the umbrella 3 is rotatable relative to the stay 2, the umbrella 3 can be rotated to a desired angle. And 3 umbrellas
The free rotation of the bracket 4 is due to the stay abutment part 4 of the bracket 4.
This can be inhibited by the frictional force (braking force) generated between b, 4c and the side surfaces 2c, 2d of the stay 2. Also, the frictional force is caused by the stay 2 of screws 6 and 7.
It can be adjusted by the degree of screwing.

(Problem that the invention attempts to solve) However, when the angle of the umbrella 2 is adjusted repeatedly, the screws 6 and 7 become loose, the braking force generated between the bracket 4 and the stay 2 decreases, and the umbrella 2 becomes loose. 3
There is a problem that it becomes impossible to prohibit the free rotation of the
Another problem is that the power cord 8 is exposed to the outside, resulting in poor appearance.

This idea was created in view of the above problems.
The purpose is to provide a lighting fixture with constant braking force and good appearance. Another object of the invention is to provide a lighting fixture that is easy to assemble and has a simple structure.

(Means for Solving the Problems) The present invention for solving the above problems is a lighting fixture in which a lighting part is rotatably provided with respect to a base part, and an oval hole part provided in the lighting part and an oval hole part provided in the lighting part. , a round hole provided in the base part, an oval part that fits into the oval hole of the oval hole part, and an oval part that fits loosely in the round hole of the round hole part, and an anti-oval part side of the round hole part. a hinge pin that has a brim that comes in contact with the starting end of the lighting cord; a spring that presses the brim of the hinge pin toward the round hole; The device is characterized in that it has a spring contact which is in contact with the terminal end of the power supply side cord.

(Function) In the lighting fixture of the present invention, the oval part fits into the oval hole of the oval hole part of the base part and loosely fits into the round hole part of the round hole part, and the opposite oval hole part side of the round hole part of the lighting part. The hinge pin, to which the starting end of the lighting cord is connected, rotatably attaches the lighting part and the base part, and the flange part is pressed toward the round hole part by a spring. Furthermore, the end face of the oval part comes into contact with a spring contact provided on the base part side and to which the terminal end of the power supply side cord is connected.

(Example) Next, an example of the present invention will be described with reference to FIGS. 1 to 5.

First, in FIG. 4, 11 is a base, 12 is a stay erected on the base 11, and 13 is a stay 1.
This case is rotatably attached to 2. The case 13 is provided with a concave mirror 14 and a lamp 15 inside. 14a is an illumination window formed in the concave mirror 14, and the light of the lamp 15 is emitted from this illumination window 14a. 16 is a power supply side cord, and 17 is a lamp operation switch.

Next, in FIG. 3, a recess 13a is provided at the center of the lower bottom of the case 13, and the upper end of the stay 12 is pushed into the space formed by this recess 13a.
At the upper end of the side surfaces 12a and 12b of the stay 12,
Oval hole part 12 in which oval holes 12c and 12d are bored
e, 12f are formed.

Next, in FIG. 2, the oval part 12 of the stay 12
Round hole parts 13d and 13e in which round holes 13b and 13c are bored are provided on each surface of the recessed part 13a of the case 13, which faces the recessed parts 13a and 12f.

In addition, there are long grooves 13 near the round holes 13d and 13e.
Support portions 13f and 13g are provided with markings 13i and 13i. And case 13 and stay 1
2 means hinge pins 17, 18, washers 19,
20, springs 21 and 22, and rubber ring 2
3 and 24, it is rotatably mounted.

Next, using FIG. 1, the case 13 and stay 12 are
The installation will be explained in detail. The hinge pin 18 fits into the oval hole 12d of the oval hole part 12f of the stay 12, and fits into the round hole 13c of the round hole part 13e of the case 13.
an oval part 18a that fits loosely into the ring, a collar part 18b that comes into contact with the round hole part 13e through the rubber ring 24, and a spring that fits into the washer 20 and spring 22 and whose tip part engages with the long groove 13i of the support part 13g. It is composed of a guide section 18c. Both ends of the spring 22 are connected to the washer 20 and the support part 1.
3g, and applies an urging force to the flange portion 18b in the direction of the round hole portion 13e. Furthermore, the starting end of the lighting side cord 27 is connected to the washer 20. or,
Inside the stay 12, a spring contact 26 is provided which abuts the end of the hinge pin 18 on the oval part 18a side and to which the starting end of the power supply cord 16 is connected (see FIG. 2).

Although FIG. 1 shows one side 12b side of the stay 12, the other side 12a side has the same configuration, so a description thereof will be omitted.

Next, the operation of the above configuration will be explained. Hinge pin 1
7 and 18 are loosely fitted into the round holes 13b and 13c of the case 13, so that the case 13 can be rotated to a desired angle. Also, hinge pin 1
As for the hinge pins 7 and 18, the oval parts 17a and 18a are fitted into the oval holes 12c and 12d of the stay 12, so that the hinge pins 17 and 18 themselves are prohibited from rotating and can only move in the axial direction. and,
The round holes 13d and 1 are formed by the springs 21 and 22.
Since it is receiving the urging force in the direction 3e, the flange 17
b, 18b press the rubber rings 23, 24, and further press the round holes 13d, 13e of the case 13. Therefore, the natural rotation of the case 13 is prohibited due to the frictional force generated between the round holes 13d, 13e and the rubber rings 23, 24 and between the rubber rings 23, 24 and the collars 17b, 18b. .

According to the above configuration, even if the angle of the case 13 is repeatedly adjusted, the pressing forces of the springs 21 and 22 do not change, so that the pressure between the round holes 13d and 13e and the rubber rings 23 and 24 and between the rubber rings 23 and 24
The frictional force generated between the flange portions 17b and 18b also does not change, and a constant braking force can always be obtained. And this structure is very simple.

Also, this braking force is generated by the springs 21 and 20.
It can be adjusted by changing the spring constant, spring length, and the material and thickness of the rubber rings 23 and 24.

Also, as shown in Fig. 5a, for assembly, first assemble the hinge pins 18, 17, washers 20, 19, springs 22, 21, and rubber rings 24, 23 to the supports 13g, 13f. . Next, the hinge pins 18, 17 are moved to the support parts 13g, 13f, and the stay 12 is inserted into the recess 13a of the cover 13 until the oval holes 12d, 12c are opposed to the round holes 13c, 13b. And Figure 5b
As shown in FIG.
When the force that caused the hinge pins 18 and 17 to move toward the g and 13f sides is released, the hinge pins 18 and 17 move toward the stay 12 due to the urging force of the springs 22 and 21. Case 1
3, the oval parts 18a, 17a of the hinge pins 18, 17 and the oval holes 12d of the stay 12,
12c are fitted together, and the oval parts 18a, 17a side end surfaces of the hinge pins 18, 17 are connected to the spring contacts 26,
25, and the assembly is completed. Therefore, the assembly workability is very good. At this time, if both the oval parts 18a, 17a of the hinge pins 18, 17 and the oval holes 12d, 12c of the stay 12 are tapered, the fitting will be smoother. or,
Since the power supply side cord 16 and the lighting side cord 27 are connected via the hinge pins 18 and 17, the cords are not exposed to the outside and the appearance is good.

Note that the present invention is not limited to the above embodiments.
For example, although conical coil springs are illustrated in the drawings as the spring contacts 25 and 26, leaf spring type spring contacts may also be used. Also, stay 1
The oval holes 12e and 12f of No. 2 are made into tapered surfaces in which the distance between the two becomes narrower toward the tip, and when assembling, the hinge pins 17, 18, etc. are assembled into the case 13 first, and the stay 12 is finally attached. It may be inserted into the recess 13a of the case 13.

(Effects of the Invention) As explained above, according to the present invention, it is possible to provide a lighting fixture with a constant braking force, good appearance, good assembly workability, and a simple structure.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of essential parts showing an embodiment of the present invention;
Fig. 2 is a sectional view taken along line A-A in Fig. 4, Fig. 3 is a sectional view taken along line B-B in Fig. 4, Fig. 4 is an external perspective view showing one embodiment of the present invention, and Fig. 5 is FIG. 6 is a side view showing a conventional example, and FIG. 7 is a sectional view of a main part in FIG. 6. 1,11...Base, 2,12...Stay, 3
... Umbrella, 4... Bracket, 6, 7... Screw,
12c, 12d...Oval hole, 12e, 12f...
Oval hole part, 13... Case, 13b, 13c...
Round hole, 13d, 13e...Round hole part, 14...Concave mirror, 15...Lamp, 16...Power side cord, 1
7, 18...Hinge pin, 17a, 18a...Oval part, 17b, 18b...Brim part, 19,20...
Washer, 21, 22...Spring, 23, 2
4...Rubber ring, 25, 26...Spring contact, 27...Lighting side cord.

Claims (1)

[Scope of Utility Model Registration Claim] A lighting device in which a lighting section is rotatably provided with respect to a base section, comprising: an oval hole section provided in the lighting section; a round hole section provided in the base section; , having an oval part that fits into the oval hole of the oval hole part and loosely fits into the round hole of the circular hole part, and a collar part that abuts on the opposite oval part side of the round hole part, and the starting end of the lighting side cord. a hinge pin to which is connected, a spring that presses the flange of the hinge pin toward the round hole, and a spring provided on the base side that abuts the end surface of the oval part of the hinge pin and to which the terminal end of the power supply cord is connected. A lighting device characterized by having a contact point.