JPS6312494Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a hanging lighting fixture that has a shade that is detachably hinged to the top plate and is used in a suspended state from the ceiling.

In a hanging lighting fixture that is used by hanging from a ceiling, and in which the shade hinged to the top plate can be attached and detached from the top plate, the shade is opened by releasing the engagement between the shade and the top plate while the fixture is still hanging from the ceiling when replacing the bulb or cleaning. Fig. 1 shows the hanging state of a conventional hanging lighting fixture in which the shade is attached and detached as described above. In the figure, 1 indicates the shade hinged to the top plate (not shown) by the hinge part 3, and 2 indicates the lighting fixture main body storage section protruding from the center of the top plate. This hanging lighting fixture is hung from a ceiling part 6 by two hanging fittings 4, one end of which is fixed to the top plate, and the lighting fixture main body storage section 2 is opened.
The electrical connection is established by hooking the ceiling hook connected to the extended cord 5 to the ceiling hook on the ceiling 6. The shade 1 is fixed to the top plate when in use.
When the shade 1 is released from the locking state between the top plate and the shade 1 while hanging from the ceiling 6 as described above, the shade 1 swings widely as shown by the two-dot chain line in Fig. 1 because it is supported by the hinge 3. This causes a risk of the swinging shade 1 colliding with people or objects around the lighting fixture, which is a safety problem. In addition, in order to prevent the shade 1 from swinging, the shade must be opened while holding it by hand, which is inconvenient to handle. Furthermore, if the interval between the two hanging brackets 4 is narrowed as shown in Fig. 2, the top plate itself tilts when the shade 1 is opened, causing a part of the top plate to hit the ceiling 6 and damage the lighting fixture. Therefore, when the interval between the hanging brackets 4 is narrowed, it is necessary to make the hanging brackets 4 sufficiently long so that the top plate does not hit the ceiling. This means that the interval and length of the hanging brackets 4 cannot be freely set, and the usable installation range is limited.

In view of the above-mentioned conventional drawbacks, this idea was developed to create a hanging lighting fixture that allows the shade to be safely and smoothly attached to and removed from the top plate, and also allows the installation interval and length of the hanging fittings to be freely set. The purpose is to provide.

Examples of this invention will be described below with reference to the drawings.

FIG. 3 is an external perspective view of a hanging lighting fixture that is an embodiment of this invention, and FIG. 4 is an exploded perspective view of the engaging piece and the surrounding area of the stopper.

The shade 10 is hinged to the top plate 11 at one side by a hinge 13, and a hook 15 attached to the side opposite to the hinge is attached to the top plate 11.
It is latched to the top plate 11 by hooking it on the protrusion 14 of 1. The shade 10 is assembled into a substantially rectangular parallelepiped with a wooden frame, has an opening at the top that fits into a substantially square top plate 11, and has through-holes 16 formed with a through-hole material on the side and bottom surfaces. . A lighting fixture housing part 12 is protruded from the center of the top plate 11, and a cord 18 connected to a hook ceiling is pulled out from a through hole of the lighting fixture housing part 12. Further, a set of hook holes 19 for hanging fittings 20 (described later) are bored in the upper surface of the lighting fixture main body storage section 12.

Protrusions 20 and 21 with small holes are protruded from the top plate 11 in the vicinity of the protrusion 14. One end of a string 22 is fixed to the protrusion 20 using the small hole. The string 22 is folded back twice and passes through the small hole of the protrusion 21, and its tip is tied to the stopper 25. One end of the tension spring 23 is hooked to the folding point of the string 22, and the other end of the tension spring 23 is hooked to the folding point of the string 22.
It is locked and fixed to a protrusion 24 formed on the top. The stopper 25 has a mushroom-like shape as a whole and is composed of a head 25a and body parts 25b and 25c each having a different diameter. Stoppa 2
5 is a support fitting 27 fixed to the top plate 11 via a sleeve 26 whose inner diameter is larger than the outer diameter of the body part 25c and smaller than the outer diameter of the body part 25b, and is pulled in the horizontal forward direction (direction A). The string 22, which is freely supported and has one end fixed to the stopper 25, passes through small holes 27a and 27b formed in the sleeve 26 and the support fitting 27. Further, a flange 26a is formed at the front end of the sleeve 26, and a stopper support spring 28 is provided between the flange 26a and the support fitting 27 to bias the stopper 25 in a direction opposite to the tensioning direction of the tension spring 23. It has been placed.

An engagement piece 29 that engages with the stopper 25 is attached to the wooden frame 10a of the shade 10. This engagement piece 29 as an engagement means is made by bending the upper part of a single plate outward, and has a notch 29a having a diameter larger than the diameter of the head 25a of the stopper 25 at approximately the center, and a notch 29a having a diameter larger than the diameter of the head 25a of the stopper 25. It has a cutout portion 29b smaller than the diameter of the body portion 25b and larger than the diameter of the body portion 25b. Further, the attachment position to the wooden frame 10a is such that the notch 29a faces the stopper 25.

Next, the functions of the stopper 25 and the engagement piece 29 of the hanging lighting fixture having the above structure will be explained.

5A to 5C are diagrams showing the effect when the hook 15 is removed from the state in which the shade 10 is locked to the top plate 11.

FIG. 5A shows a state in which the shade 10 is locked to the top plate 11. In this state, stopper 2
The head 25a of the engagement piece 29 is inserted through the notch 29a of the engagement piece 29, and maintains an engaged state.
From the state shown in FIG. 5A, attach the hook 15 to the protrusion 1.
4, the shade 10 rotates counterclockwise around the hinge 13 due to its own weight. Then, the body 25b of the stopper 25 engages the engagement piece 2.
9, the engagement piece 29 moves the stopper 25 to the position shown in FIG. 5B as the shade 10 rotates.
Pull it diagonally downward as shown. When the shade 10 further rotates, the head 2 of the stopper 25
5a engages with the notch 29b of the engagement piece 29, and the stopper 25 is held in a substantially horizontal state and is further pulled down. At this time, since the tension force of the spring 23 is acting on the string 22, the rapid rotation of the shade 10 is alleviated by the tension force, and the rotation force of the shade 10 itself and the elastic force of the spring 23 are combined. Figure 5A to Figure 5C by interaction
The process of transitioning to the state shown in Figure 1 proceeds slowly and smoothly. For this reason, Figures 1 to 2
Even if the top plate and the shade do not move due to the sudden reaction force as shown in the figure, and the hanging metal fittings are installed with narrow intervals as shown in No movement occurs. The movement of the shade 10 occurs when the elastic force of the spring 23 becomes equal to the rotating force of the shade 10, or when the string 22
To stop when is stretched to its maximum length,
The rotation angle of the shade 10 is always constant. Therefore, by setting the elastic modulus of the spring 23 and the length of the string 22 to appropriate values, work efficiency can be greatly improved.

In order to replace parts such as a fluorescent lamp or to clean the inside, the engagement between the stopper 25 and the engagement piece 29 is released in the state shown in FIG. 5C. This engagement state can be released by moving the stopper 25 further downward in the state shown in FIG.
9 slightly clockwise to move the head 25a of the stopper 25 to the position of the notch 29a, and in this state, pull out the stopper 25 from the engagement piece 29. In this case, the head 25 of the stopper 25
Since the diameter of a is larger than the diameter of the notch 29b of the engagement piece 29 and smaller than the diameter of the notch 29a, when the head 25a is engaged at the notch 29b, Although the engagement never comes off, it can be easily removed by bringing the head 25a to the position of the notch 29a. When the engaged state is released, the shade 10 can further rotate counterclockwise due to its own weight from the state shown in FIG. 5C, so if the shade 10 is supported by hand, the top plate 11 The shade 10 can be rotated until it becomes approximately perpendicular. At this time, the stopper 25 is pulled upward by the action of the tension spring 23 and returns to the original position shown in FIG. 5A.

Next, finish the work and shade 1 for the top plate 11.
The operation up to locking 0 will be explained.

FIGS. 7A to 7C are diagrams showing the actions of the stopper and the engagement piece until the shade 10 is locked to the top plate 11.

When the work is completed, the shade 10 is rotated clockwise by hand. As shown in FIG. 7A, the stopper 25 is horizontally supported by the support fitting 27 via the sleeve 26, so when the shade 10 is further rotated clockwise, the stopper 25 is As shown, the bent portion of the engagement piece 29 pushes the stopper 25 backward against the stopper support spring 28. When the shade 10 is further pushed upward and lifted to the position where it is locked to the top plate, the head 25 of the stopper 25
a comes to face the notch 29a of the engagement piece 29, and at this time the stopper 25 moves forward (direction A) by the return force of the stopper support spring 28, as shown in FIG. 7C. Then, the stopper 25 and the engagement piece 29 engage with each other. Thereafter, by hooking the hook 15 onto the protrusion 14, the shade 10
can be locked to the top plate 11.

In this way, the shade 10 can be locked to the top plate 11 by simply lifting the shade 10 to a predetermined position after completing the work, and then hooking the metal fitting 15 onto the protrusion 14. , the stopper 25 and the engagement piece 29 can be automatically engaged. For this reason, after completing the work, shade 1
0 is also very easy to install, and since the stopper 25 and the engaging piece 29 are securely engaged when the shade 10 is attached, the 5th The effect shown in the figure will definitely occur. In other words, the engagement between the stopper 25 and the engagement piece 29 is performed automatically without the operator being aware of it, ensuring that the shade and top plate do not shake due to sudden reaction as shown in Figures 1 and 2. can be prevented. This has the advantage of very good workability and extremely high safety. In addition, since the stopper support spring 28 contributes only to the engagement action between the stopper 25 and the engagement piece 29, its elastic modulus should be selected by considering only the engagement action between the stopper 25 and the engagement piece 29. Therefore, even if the top plate 11 and the shade 10 are frequently removed, a reliable engagement action that does not cause malfunction can be achieved.

As described above, according to this invention, the sudden reaction force when the shade is removed from the top plate can be suppressed by the action of one string and the tension spring.
Furthermore, since the stopper and the engagement piece can be automatically engaged, damage to parts can be prevented, workability is very good, and safety is also very high. Furthermore, since the stopper and the engaging means are engaged by a stopper support spring provided separately from the tension spring, reliable engagement can always be achieved. Furthermore, since the string is folded at least twice, the rotation angle of the shade 10 can be increased even if the size of the top plate 11 is small. Work can be continued without releasing the engaged state. Therefore, there is an advantage that workability is further improved. Further, since it is possible to prevent the top plate and the shade 10 from swinging greatly, there is an advantage that the mounting position of the hanging metal fittings is not restricted.

[Brief explanation of the drawing]

FIGS. 1 and 2 are diagrams showing a state in which a shade of a conventional hanging lighting fixture is removed. Fig. 3 is an external perspective view of a hanging lighting fixture that is an embodiment of this invention, Fig. 4 is an exploded perspective view of the engaging piece and the surrounding area of the stopper, and Fig. 5 A to C are when the shade is removed. Figure 6 is a diagram showing the swinging state of the shade and top plate, and Figures 7A to C are diagrams showing the operation after the work is completed.
It is a figure which shows the effect|action until locking a shade. 10... shade, 11... top plate, 13... hinge, 22... string, 23... tension spring, 25...
Stopper, 26... Sleeve, 27... Stopper support metal fitting, 28... Stopper support spring, 29...
Engagement piece.

Claims (1)

[Scope of Claim for Utility Model Registration] A hanging lighting fixture that is used by hanging from a ceiling and has a shade that is hinged to a top plate at one side and is locked to the top plate when in use. a string fixed to the board and folded back at least twice; a tension spring having one end hooked to the folded part of the string and the other end fixed to a proper position on the top board; a stopper that is tied together and supported on the top plate so as to be able to be pulled in a horizontal forward direction against the tension spring; and a stopper support that biases the stopper in a direction opposite to the tensioning direction of the tension spring at its support portion. a spring, which is fixed approximately perpendicularly to the shade, and when lifting the shade from below upward, presses the stopper horizontally forward against the stopper support spring, and lifts the shade to a position where it is locked to the top plate. an engaging means that engages with the stopper by the restoring force of the stopper support spring when the stopper is turned.