JPS6158923B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for disconnecting a connection between a rectangular sealing body fitted with a contact fitting and attached to a ceiling surface, and a rectangular plug body fitted with a hook blade that engages with the contact fitting. This invention relates to a detachment prevention device for a rectangular hanging ceiling rosette.

Conventionally, with hanging ceiling rosettes, the hook blade of the plug body attached to the hanging cord of the lighting fixture is inserted into the ceiling body attached to the ceiling surface, and then the hook blade is inserted into the ceiling body by rotating the plug body. It was designed to engage with the contact fittings of the device to mechanically hold it and to provide electrical continuity.

For such conventional hanging ceiling rosettes, when a strong vibration such as an earthquake is applied to the hanging ceiling rosette, the plug body rotates in the detachment direction and comes off from the ceiling body, and as a result, the lighting fixture is lifted from the ceiling. It had the drawback of falling.

To prevent this plug body from detaching,
For example, there is Special Publication No. 50-23236, which is the first
As shown in the figure, when the hook blade B attached to the plug body A is engaged with the contact fitting N attached to the sealing body C, the tip a of the stopper rod, which is biased by the compression spring, is attached to the plug body. It fits into the recess h provided on the top surface and prevents the plug body A from rotating in the detachment direction with respect to the ceiling body C, thereby preventing the lighting fixtures suspended by the cord from falling from the ceiling surface N. It prevents you from doing so. In addition, when removing the plug body, push the handle and pull up the stopper rod so that the plug body can be removed.

However, this type of detachment prevention device has a complicated structure and is difficult to assemble, and requires a large storage space, so it is difficult to install it in a small rectangular hanging ceiling rosette because it is attached to the edge of a ceiling pole. When attempting to provide a detachment prevention device to a rectangular hanging ceiling rosette used in a lighting fixture, it was inconvenient because the rectangular hanging ceiling rosette had to be replaced.

This invention has been made with the above-mentioned in mind, and its purpose is to provide a detachment prevention device for rectangular hanging ceiling rosettes, and also to provide a detachable device for rectangular hanging ceiling rosettes used in existing lighting equipment. To provide a detachment prevention device for a rectangular hanging ceiling rosette that can be freely attached.

Hereinafter, this invention will be explained based on FIG. 2, which is shown as an embodiment.

Reference numeral 1 denotes a rectangular ceiling body, which is attached to the ceiling surface X with contact fittings (not shown) attached thereto. Reference numeral 2 denotes a rectangular plug body, which has a hook blade 3 that engages with the contact fitting, and a hanging cord 4 to which a lighting fixture Y is connected to the other end is connected to the hook blade 3. Reference numeral 5 denotes a cover, which has almost the same external shape as the rectangular hanging ceiling rosette Z in which the rectangular sealing body 1 and the rectangular plug body 2 are engaged, and the joint Za between the rectangular sealing body 1 and the rectangular plug body 2 is depressed. A recessed chamber 5a is provided with a depth equal to that of the rectangle, and a notch is formed by dividing the recessed chamber into two, leaving a hinge portion 5c on the long side of the rectangle.
A claw 5b that engages the hanging cord 4 is provided at the bottom of the recessed portion of this notch.

Therefore, in order to attach the cover 5, which is a detachment prevention device, to the existing hanging ceiling rosette Z,
After the claws 5b are spread by the hinge part 5c and the hanging cord 4 is inserted, the cover 5 is moved upward and fitted into the rectangular hanging ceiling rosette Z. The arc-shaped claw 5b provided on the cover 5 has a smaller diameter than the hanging cord 4, but since the hanging cord 4 has elasticity, the cover 5 can be moved by sliding the claw 5b onto the hanging cord 4. , the cover 5 is fitted with the rectangular hanging ceiling rosette Z when the claw 5b is engaged.
is pressed against and held by the hanging cord 4. In this state, if a strong vibration such as an earthquake is applied to the rectangular hook ceiling rosette Z, the rectangular plug main body 2 tends to rotate in the detachment direction due to the vibration. However, the rotation of the rectangular plug body 2 is prevented by the inner wall of the recessed chamber 5a fitted into the rectangular sealing body 1 attached to the ceiling surface X.

As described above, in this invention, the cover 5 is provided with a concave chamber 5a which has almost the same external shape as the rectangular hanging ceiling rosette Z and has a depth such that the joint Za between the rectangular sealing body 1 and the rectangular plug body 2 is depressed. , and a hinge part 5 is provided on the long side of the rectangle.
A notch is formed by dividing the concave chamber 5a into two, leaving a portion c, and a claw 5b that engages the hanging cord 4 is provided at the bottom of the concave chamber in this notch, and the cover 5 is hooked to the ceiling rosette Z. Even if vibrations such as those caused by an earthquake are applied to the sealing rosette Z, the cover 5 prevents the rectangular plug body 2 from rotating in the detachment direction and maintains the engaged state of the sealing rosette Z. Since the cover 5 fits into the outer shape of the rectangular hanging ceiling rosette Z, the claw 5b is also used for the rectangular hanging ceiling rosette Z used in existing lighting equipment.
A detachment prevention device for a rectangular hanging ceiling rosette that can be detachably attached is obtained by simply spreading the cord by the hinge part 5c and inserting the hanging cord 4.

[Brief explanation of the drawing]

FIG. 1 is a side view showing a conventional example, with main parts taken in section. FIG. 2 is a perspective view showing an embodiment of the present invention. 1... Rectangular ceiling body, 2... Rectangular plug body, 3... Hooking plug blade, 4... Hanging cord, 5... Cover, 5a... Concave chamber, 5b... Claw, X... Ceiling surface, Z
...Rectangular hanging ceiling rosette.

Claims (1)

[Claims] 1. A rectangular ceiling body that is attached to the ceiling and has a contact fitting, a rectangular plug body that has a hook blade that engages with the contact fitting, and a hanging cord connected to the hook blade, and a rectangular ceiling body that has a rectangular plug body that has a hanging cord connected to the hook blade. A recessed chamber is provided which is approximately the same as the outer shape of the rectangular hanging ceiling rosette that engages the plug body, and has a depth that allows the joint between the rectangular sealing body and the rectangular plug body to sink, and the long side of the rectangle. The recessed chamber is divided into two parts, leaving a hinge part, to form a cutout part, and a rectangular hanging ceiling rose comprising a cover with a claw that engages with the hanging cord is provided at the bottom of the recessed part of the cutout part. Tsuto separation prevention device.