JPS6233207Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an improvement of a hook-type ceiling rosette, which consists of a ceiling body that houses a contact fitting and is attached to the ceiling surface, and a plug body that has a plug blade that engages with the contact fitting. .

Conventionally, this type of hook-type ceiling rosette has been constructed by connecting the plug blade of the plug body B attached to the hanging cord of the lighting fixture Y to the engagement groove hole of the ceiling body D attached to the ceiling surface X, as shown in Fig. 1. After passing through the sealing body B, by rotating the plug body B, the plug blade C engages with a contact fitting housed in the sealing body D, thereby mechanically holding the plug body B and establishing electrical continuity. Ta.

However, this has the disadvantage that when strong vibrations such as those caused by an earthquake are applied, the plug body (B) rotates in the detachment direction and comes off from the ceiling body (2), resulting in the lighting fixture Y falling from the ceiling surface (X). .

This invention was improved by focusing on the above circumstances, and its purpose is to ensure the engagement between the sealing body and the plug body to prevent the lighting equipment from falling, and to have a simple structure and easy manufacturing. To provide a hanging type ceiling rosette.

An embodiment of this invention will be described below with reference to FIGS. 2 to 4. 1 is the sealing body;
A contact fitting 3 is housed in the container body 2, and a groove 5 corresponding to the contact fitting 3 and a groove 5 are formed in the bottom wall 4 of the container.
A substantially L-shaped engagement groove 7 is formed by connecting wider insertion holes 6, and a screw 8 is attached to the ceiling surface X.
A through hole 9 is formed. Reference numeral 10 denotes an arc-shaped protrusion for preventing the plug blade from coming off by bending and climbing over when the plug blade engages with the contact fitting;
It is formed integrally with the side surface 11 of the inner end 5a of the groove 5 during plastic molding. Reference numeral 12 denotes a plug body, which has a plug blade 13 that is inserted through the insertion hole 6 of the engagement groove 7 and rotated to engage with the contact fitting 3. A lighting fixture Y is connected to the other end of the plug blade 13. A terminal 15 for connecting a hanging cord 14 is provided. Reference numeral 16 denotes a terminal for connecting a power line, and is made up of a terminal plate 17 formed integrally with the contact fitting 3 and a locking piece 18. 19 is a release button.

Then, the blades 13 of the plug body 12 are inserted into the insertion hole 6 of the sealing body 1 attached to the ceiling surface X. Next, the plug body 12 is rotated in the engagement direction _N1 , so that the blades 13 enter the groove 5 and are bent outward by the protrusions 10 formed on the side surface 11 of the inner end 5a of the groove 5. After that, the blades 13 overcome the protrusions 10 and are bent outward.
The plug body 12 is mechanically held to the sealing body 1 and electrically connected to the contact fitting 3 by its own elasticity.

In this state, even if a strong vibration such as an earthquake is applied, the protrusion 10 prevents the blade 13 from rotating in the detachment direction _N2 , and the blade 13 bends outward, causing the protrusion 10 to
The plug body 12 will not come off from the sealing body 1.

As mentioned above, the present invention stores the contact fitting in the container body, and also provides a groove corresponding to the contact fitting in the bottom wall of the container and an insertion hole wider than the groove to form a substantially L-shaped engagement. A sealing body having a mating groove formed therein and a through hole for a screw to be attached to the ceiling surface, and a plug blade that is rotated through the insertion hole of the engaging groove and engaged with the contact fitting. In a hook-type sealing rosette consisting of a plug body provided with a terminal for connecting a cord, when the plug blade engages with the contact fitting on the side surface of the inner end of the groove corresponding to the contact fitting of the engagement groove, the plug It has an integrally formed arc-shaped protrusion that prevents the blade from coming off when it bends and goes over.The plug blade can be inserted into the engagement groove and rotated along the groove corresponding to the contact fitting to remove the plug blade. When engaging the contact fitting, the plug blade bends over an arcuate protrusion formed on the side surface of the groove to prevent detachment, and engages with the contact fitting. Even if the plug body attempts to rotate in the detachment direction due to strong vibrations, the engagement of the plug blade and the arcuate protrusion prevents the plug body from rotating and the plug body is removed from the sealing body. It has the effect of not coming off. In other words, the plug body will not separate from the sealing body unless a large enough force is applied to the plug body in the detachment direction to bend the plug blade and make it ride over the arcuate protrusion, and the plug body will not separate from the sealing body and will not be able to escape from the lighting equipment etc. through the ceiling hook. This has the effect that there is no risk of falling due to an earthquake even if the structure is suspended. In addition, the arcuate protrusion for preventing detachment is integrally molded on the side surface of the groove during plastic molding of the container body, so there is no need to provide a special member for preventing detachment, and the number of parts can be reduced. This has the effect of making manufacturing easier and reducing costs.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a conventional example of this invention. 2 to 4 show an embodiment of this invention, with FIG. 2 being a top view, FIG. 3 being a bottom view of the sealing body, and FIG. 4 being a partially cutaway front view. DESCRIPTION OF SYMBOLS 1... Sealing body, 2... Apparatus body, 3... Contact fitting, 4... Bottom wall, 5... Groove, 5a... Inner end, 6... Insertion hole, 7... Engagement groove, 8 ……screw,
9...Through hole, 10...Protrusion, 11...Side surface, 1
2...Plug body, 13...Bung blade, 14...Hanging cord, 15, 16...Terminal, 17...Terminal board, 18...Lock piece, 19...Release button, 20
...Top surface, X...Ceiling surface, Y...Lighting equipment.

Claims (1)

[Scope of utility model registration request] A contact fitting is housed in the container body, and a groove corresponding to the contact fitting and an insertion hole wider than this groove are connected to each other in the bottom wall of the container to form a substantially L-shaped engagement groove. A sealing body having a through hole for a screw to be attached to the sealing body, a plug blade that is rotated through the insertion hole of the engagement groove and engaged with the contact fitting, and a terminal for connecting a cord to the plug blade is provided. In a hook-type sealing rosette consisting of a plug body, an arcuate projection is integrally formed with the container body on the side surface of the inner end of the groove corresponding to the contact fitting of the engagement groove, and the plug blade is caused by this arcuate projection. A hook-type ceiling rosette characterized in that the plug body is prevented from coming off by bending the plug blade and riding over it when engaging with a contact fitting.