JPH0116330Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a tight device for preventing the intrusion of water, dirt, etc. in a retractable type floor outlet in which the outlet is buried in the floor so that it can be retracted and retracted.

Conventionally, an outer cylinder with a flange-shaped floor plate is buried in the floor, and an inner cylinder with an outlet is slidably inserted into the outer cylinder, and the inner cylinder is always springed in the protruding direction by a coil spring, and the inner cylinder is closed when not in use. A retractable type floor outlet is generally used, in which the socket is stored and locked in the outer cylinder, and when used, the lock is released and the socket protrudes outside the outer cylinder. There were drawbacks such as dirt getting in and making it impossible to move in and out of the inner cylinder, and water intrusion causing electrical problems in the outlet inside the inner cylinder. In order to improve this, a structure was devised in which the upper end of the outer cylinder was made to protrude from the floor plate surface, and a cover plate fixed to the upper end of the inner cylinder in the form of a flange was fitted into the protruding end of the outer cylinder. However, the lid plate protruded considerably high from the floor surface, causing a new drawback that it became an obstacle for pedestrians.

The present invention provides a tight device for a retractable floor outlet that can prevent the intrusion of water, dirt, etc., and also allows the inner cylinder cover plate to be set at a lower position when the inner cylinder is stored. The details of the present invention will be explained below with reference to the drawings.

In Figures 1 and 2, a cylindrical outer cylinder 1 with an open top end is buried in the floor F, and an outlet 3 is provided on the outer surface.
The cylindrical inner tube 2 provided with the
The outer cylinder 1 has an annular floor plate 4 extending in the shape of an outer flange at its upper end, and the plate 4 is brought into contact with the floor F through a ring-shaped packing 5, and the inner periphery of the upper end of the outer cylinder 1 An annular inner flange 6 is provided protruding from the surface, and an annular spring receiver 7 is provided at the lower end.
is installed.

The inner cylinder 2 has a cylindrical inner cylinder main body 8 whose outer diameter is appropriately smaller than the inner diameter of the inner flange 6 of the outer cylinder, and a plurality of sliding protrusions 9 on the outer peripheral surface of the lower end of the main body 8. In the example, six pieces) are provided protrudingly spaced apart from each other, and the sliding protrusions 9 are slidably and rotatably abutted on the inner peripheral surface of the outer cylinder 1, thereby causing the outer periphery of the inner cylinder main body 8. An annular gap 10 between the surface and the inner peripheral surface of the outer cylinder 1
A circular cover plate 11 extending from the main body 8 in a flange shape is screwed onto the upper end of the main body 8, and the cover plate 11
can be fitted into and removed from the upper end of the outer cylinder 1,
In the gap 10 between the inner and outer cylinders 2 and 1, an annular tight material 12 made of an elastic material such as rubber or synthetic resin and having a substantially U-shaped cross section is inserted into the U-shaped groove to insert the inner flange 6. They are press-fitted so that they can slide between them.

In this example, the annular tight member 12 includes a cross-sectional web portion 13 and upper and lower flange portions 14 made of semi-hard rubber (JIS hardness: 70 degrees to 80 degrees, for example).
It is U-shaped and consists of 15 parts, and its web part 13
is the outer peripheral surface of the inner cylinder main body 8 and the inner flange 6 of the outer cylinder 1.
In relation to the inner flange 6, the inner cylinder 2 is raised and the tight member 12 is pushed up by its sliding protrusions 9, and the lower flange part is held. 15 is brought into contact with the inner flange 6, the upper surface of the upper flange portion 14 is flush with the floor plate 4, and when the inner cylinder 2 is further lowered, the cover plate 1
1 to push down the tight material 12 and remove the upper flange part 1.
4 is brought into contact with the inner flange 6, the cover plate 11 is fitted into the upper end of the outer cylinder 1, and its upper surface is flush with the floor plate 4. 1
Reference numeral 6 denotes a water return protrusion protruding from the inner peripheral edge of the upper surface of the upper flange portion 14, and a groove into which the protrusion fits is also formed on the cover plate 11.

Reference numeral 18 denotes a plurality of guide grooves provided on the inner circumferential surface of the outer cylinder 1, consisting of a longitudinal groove in the generatrix direction and a lateral groove extending horizontally at right angles from the upper and lower ends of the longitudinal groove. Then, the guide protrusions 19 protruding from the sliding protrusions 9 of the inner cylinder 2 are engaged with each other, and the rotation elastic force is applied to the lower end of the inner cylinder 2 and the spring receiver 7 of the outer cylinder 1 by twisting as appropriate. Both ends of the provided coil springs 17 were fixed respectively, and the springs 17 caused the inner cylinder 2 to constantly spring upward along the vertical groove of the guide groove 18 engaged with the guide protrusion 19, and the inner cylinder 2 rose and descended. The time guide protrusions 19 are adapted to be engaged with the lateral grooves of the guide grooves 18.

20 is an outlet box buried inside the floor, 21 is a buried pipe connected to the box 20, 22 is a lead wire, and 32 is the box 20.
The floor base 24 connected to the top is a horizontal adjustment ring fitted to the base 23, and the ring 2
The outer cylinder 1 is screwed onto the female thread on the inner surface of the outer cylinder 4.

The operation of this device will be explained next. Inner cylinder 2 in Fig. 1
When the inner cylinder 2 is rotated slightly against the spring 17 in the stored state to separate the guide protrusions 19 from the lateral grooves of the guide grooves 18, the inner cylinder 2 moves against the spring 1.
7 automatically protrudes upward from the inside of the outer cylinder 1.
At this time, the sliding protrusions 9 of the inner cylinder 2 push up the tight material 12 so that the upper surface of the tight material substantially coincides with the floor plate 4. In this state, while the plug of the required electric device is inserted into the outlet 3 of the inner cylinder 2 and used, the tight material 12 closes the gap between the outer cylinder 1 and the inner cylinder 2, and water accumulates on the tight material 12. prevent
This prevents water, dirt, etc. from entering the interior.

After use, when the inner cylinder 2 is pushed into the outer cylinder 1 against the spring 17, the inner cylinder 2 is automatically rotated by the spring 17 to lock the guide protrusions 19 in the horizontal grooves of the guide grooves 18. and locked in the retracted state. At that time, the lid plate 11 of the inner cylinder 2 presses down the tight material 12, and the lid plate 1
1 itself is fitted into the upper end of the outer cylinder 1, and the upper surface of the cover plate 11 is substantially aligned with the floor plate 4, thereby preventing water, dirt, etc. from entering as in use, and setting the cover plate low.

In the other embodiment shown in FIG.
a, and elastic fins 25a are provided on the inner peripheral edge.
This is an outstanding example.

According to the tight device for the retractable type floor outlet of this invention, the annular tight material closes the space between the inner cylinder and the outer cylinder to prevent the intrusion of water, dirt, etc., and also prevents the inner cylinder from protruding during use. In this case, the annular tight material makes its upper surface almost flush with the upper end of the outer cylinder, eliminating the accumulation of water. Also, when the inner cylinder is stored when not in use, the upper surface of the cover plate of the inner cylinder is exposed. It is set at a low level, almost flush with the top end of the cylinder, and is extremely effective as it allows residents to walk safely.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention; Fig. 1 is a partially cutaway longitudinal sectional view when it is stored, Fig. 2 is a longitudinal sectional view of a portion when it is extended, and Fig. 3 is a partial longitudinal sectional view of the tight material portion of Fig. 1. An enlarged view, FIG. 4 is an enlarged view of another embodiment. 1...outer cylinder, 2...inner cylinder, 3...outlet,
6...Inner flange, 8...Inner cylinder body, 9...Sliding protrusion, 10...Gap, 11...Lid plate, 12...
Tight material.

Claims (1)

[Claims for Utility Model Registration] An inner cylinder with an outlet is inserted into and out of an outer cylinder with an opening at the upper end, and the inner cylinder has an outer diameter smaller than the inner diameter of the outer cylinder. A removable flange-like cover plate is provided at the upper end of the outer cylinder, and a sliding protrusion that contacts the inner surface of the outer cylinder is provided at the lower end, and an annular gap is formed between the inner cylinder main body and the inner surface of the outer cylinder. The outer cylinder has an inner flange with an inner diameter slightly larger than the outer diameter of the inner cylinder body protruding from the inner peripheral surface of its upper end, and an annular tight material made of an elastic material and having a substantially U-shaped cross section is inserted into the U-shape. is slidably press-fitted into the gap between the inner and outer cylinders with the inner flange sandwiched between them, and when the inner cylinder protrudes, the sliding protrusion pushes up the tight material so that the upper surface of the tight material is The upper end of the outer cylinder is substantially flush with the upper end of the outer cylinder, and when the inner cylinder is retracted, the lid plate presses down the tight material and fits into the upper end of the outer cylinder, so that the upper end of the outer cylinder is approximately flush with the upper end of the outer cylinder. Tight device for exit type floor outlet.