JPH0210733Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a lid opening/closing mechanism for a floor wiring box that houses an outlet etc. and is buried in the floor.

A floor wiring box is generally constructed by connecting a floor box that houses an outlet and the like and is buried in the floor, and a floor plate that is attached to the floor surface. A conduit outlet is formed in the floor plate, and a lid is attached to the conduit outlet so as to be openable and closable.

Conventional lids are made removable by screwing together the threaded part formed on the conduit outlet and the threaded part formed on the lid, or they can be raised and lowered by pivoting a part of the lid on the floor plate. It was. For this reason, when using the outlet, in the former case, the lid will be removed and there is a risk of losing the lid, and in the latter case, the lid will remain upright, so there is a risk of getting your foot caught, etc. It was hot.

This invention solves the problems of the conventional example described above, and provides an opening/closing mechanism for the floor plate lid that does not lose the lid even when using an outlet, and that reduces the risk of getting your foot caught. purpose.

The configuration will be described below with reference to the drawings showing one embodiment.

A floor plate 1 has a protrusion 3 formed inside the conduit outlet 2, and a through hole 4 formed in the protrusion 3. The cylindrical portion 6 of the upper part of the sleeve 5 is fitted into the through hole 4 from below the protrusion 3, and the collar 7 is fixed to the protrusion 3 with bolts. A pair of protruding pieces 8, 8 are formed at the lower part of the sleeve 5, and a notch 9 is formed between them.

The shaft 10 includes a cylindrical body 11 and a body 11.
It consists of a disk-shaped head 12 with a larger diameter, and a body 11.
The tip of the engaging portion 13 is made slightly smaller in diameter and chamfered.
is formed. A groove 14 is formed on the surface of the head 12.

A shaft insertion hole 16 with a T-shaped cross section is formed in the lid 15 at a position corresponding to the through hole 4 of the protrusion 3, and when the shaft 10 is inserted, the head 12 of the shaft comes into contact and prevents the shaft from coming out. At the same time, the head 12 is embedded within the lid 15.

The shaft 10 is inserted into the shaft insertion hole 1 of the lid body 15.
6, and a spring 17 is inserted into the body 11.
is inserted into the sleeve 5 while resisting the pressing force of the spring 17. An engaging portion 13 formed at the tip of the shaft 10 is fitted and fixed into a small hole 19 of a retaining ring 18, and serves to prevent the shaft 10 from coming off. A pair of protrusions 2 of this retaining ring 18
0 and 20 come into contact with the lower ends of the pair of protruding pieces 8 and 8 of the sleeve 5, as shown in FIG. 2a, or fit into the notch 9, as shown in FIG. 2b.

Next, the state of use of this lid opening/closing mechanism will be explained.

FIG. 2a shows a state in which the lid body 15 is closed. In this state, the pair of protrusions 20, 20 of the retaining ring 18 fixed to the tip of the shaft 10 are connected to the pair of protrusions 8, 8 of the sleeve 5. It is in contact with the lower end, and the spring 17 is compressed. In addition, the lid body 15
is fitted into the entrance of the conduit outlet 2. From this state, when a screwdriver or a coin is inserted into the groove 14 formed in the head 12 of the shaft 10 and rotated 90 degrees to the left or right, the protrusions 20, 20 of the retaining ring 18 are inserted into the protruding piece 8 of the sleeve 5. , 8 and fits into the notch 9. Then, spring 1
7, the lid body 15 and the shaft 10 are lifted upward to the state shown in FIG. 2b. Thereafter, when the lid body 15 is rotated 180 degrees around the shaft 10, the wire outlet 2 can be opened.

In addition, when closing the lid 15, the above-mentioned procedure is reversed, that is, after the lid 15 is moved above the conduit outlet 2, the shaft 10 is moved by the spring 17.
The shaft 10 is lowered against the pressing force of
The protrusions 20, 20 of the retaining ring 18 may be engaged with the lower ends of the protruding pieces 8, 8 of the sleeve 5 by rotating the retaining ring 18 by 90 degrees to the left or right.

FIG. 4 shows a second embodiment of this invention. In this embodiment, the means for linearly moving the shaft 10 up and down is constructed by screwing threaded portions 21 formed on the shaft 10 and the protrusion 3. That is, the shaft 10 inserted through the lid 15 has a retaining ring 22 fitted to the base of its body 11.
The lid body 15 is rotatably held between the head 12 of the shaft 10. A threaded portion 21 formed on the body portion 11 of the shaft 10 is threadedly engaged with a threaded portion 21 formed on the protruding portion 3 of the floor plate 1, and a retaining ring 23 is fitted to the tip of the shaft 10. It acts to prevent the shaft 10 from coming off.

In the case of this embodiment, the wire outlet 2 of the floor plate 1 can be opened and closed by rotating the shaft 10 and rotating the lid 15. That is, by rotating the shaft 10 up and rotating the cover body 15 by 180 degrees around the shaft 10, the wire outlet 2 can be opened. When the cover 10 is rotated and lowered, the lid body 15 can fit into the wire outlet 2 and close the wire outlet 2.

This invention has the above-mentioned configuration and has the following excellent practical effects.

First, when the shaft 10 is rotated, the lid 15 rises and separates from the wire outlet 2, and then the lid 15
Since the electric wire outlet 2 can be opened by rotating the electric wire outlet 2 around the shaft 10, the opening operation of the cover body 15 is very easy. Moreover, the lid 15 can be easily closed by following the procedure in reverse to the above.

The height of the lid 15 from the floor surface when the lid 15 is opened only needs to be large enough to allow the lid 15 to rotate around the shaft 10, so it is possible to reduce this height. can. Therefore, there is little risk of getting your foot caught.

Since the lid 15 remains connected to the floor plate 1 by the shaft 10 even when opened, there is no risk of losing the lid 15.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of this invention. FIG. 2a is a sectional view showing the lid of the first embodiment in a closed state. FIG. 2b is a sectional view showing the lid in an open state. FIG. 3 is an exploded perspective view of the linear vertical movement means of the first embodiment. FIG. 4 is a sectional view showing the second embodiment. 1...Floor plate, 2...Wire outlet, 3
...Protrusion, 5...Sleeve, 8...Protrusion piece, 9
... Notch, 10 ... Shaft, 15 ... Lid,
17...Spring, 18...Retaining ring, 20...
Projection, 21...screw part.

Claims (1)

[Scope of utility model registration request] A shaft 10 extending in the vertical direction is attached to the protrusion 3 formed in the wire outlet 2 of the floor plate 1, and the shaft 10 is configured to move up and down by rotation around its axis, and the shaft 10 A lid body 15 that fits into the wire outlet 2 is rotatably attached to the upper end of the shaft 10 so as to be substantially parallel to the floor plate 1, and the shaft 10 is rotated around its axis and raised. By raising the lid 15 in the parallel state and further rotating the lid 15 around the shaft 10, the lid 15 is opened, and the opened lid 15 is moved to the floor. A lid opening/closing mechanism for a floor plate, characterized in that it is placed close to a plate 1.