JPH074043B2 - Floor outlet - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor outlet which is stored in a floor surface when not in use and projects above the floor when in use.

[0002]

2. Description of the Related Art A conventional example (for example, JP-B-49-25036) is shown in FIGS. That is, this floor outlet is mounted on the bottom plate 81 disposed inside the floor hole 88, the compression coil spring 82 whose lower end is placed on the bottom plate 81, and the upper end of the compression coil spring 82. The outlet main body 84 having a lead wire 83 that passes through the compression coil spring 82 and projects from the floor hole 88, and the compression coil spring 82 is compressed so that the concentric main body 84 can be disengaged from the floor hole 88. Locking means (not shown) for locking. 80 is a lead wire insertion part, 85 is a floor, 86 is a box cover, and 87 is a box.

In the proposed example of FIG. 10, the terminal block 85 is fixed to the bottom plate 81, and the terminal block 85 and the outlet main body 84 are connected to the lead wire 8.
3, and the box 87 is wired from the terminal block 85 through the lead wire insertion portion 80.

[0004]

However, in the above-mentioned conventional example and the proposed example, when the outlet main body 84 is housed in the floor 85, the compression coil spring 82 contracts and the lead wire 83 flexes at the same time. As described above, the part 83a of the lead wire 83 is sandwiched between the compression coil springs 82, which may break the insulating coating of the lead wire 83 and cause an electric accident.

Therefore, an object of the present invention is to provide a floor outlet capable of preventing a lead wire from being caught in a compression coil spring.

[0006]

SUMMARY OF THE INVENTION A floor outlet according to the present invention comprises a bottom plate disposed inside a floor hole, a compression coil spring having a lower end portion mounted on the bottom plate, and an upper end of the compression coil spring. An outlet main body that is mounted on a portion and protrudes from the floor hole and has a lead wire that passes through the compression coil spring; a state in which the consen main body protrudes from the floor hole and resists the compression coil spring. Locking means for locking the state of being housed in the floor hole so that it can be engaged and disengaged respectively, and an inner portion of the lead wire inside the compression coil spring is formed into an expandable coil. To do.

[0007]

According to the structure of the present invention, when the locking means is released, the compression coil spring extends and the outlet body projects from the floor hole. The outlet body is pushed to compress the compression coil spring and engage the locking means. When stopped, the outlet body is stored in the floor hole. Further, when the outlet body projects from the floor hole, the coiled portion of the lead wire expands, and when the outlet body is housed in the floor hole, the coiled portion of the lead wire contracts. Therefore, the lead wire is not sandwiched between the compression coil springs, the insulation coating of the lead wire can be prevented from being damaged, and safety can be improved.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. That is, this floor outlet has the bottom plate 1, the compression coil spring 2, the outlet main body 3, and the locking means 4. The bottom plate 1 is arranged inside a floor hole (not shown). In the embodiment, it has a plate 7 arranged on the floor surface, and a cylindrical portion 11 protruding from the plate 7 and fitted into the floor hole. The plate 7 is provided with a plate fixing screw 9, and the plate fixing screw 9 is used to fix the floor. It is fixed. The bottom plate 1 has a substantially disc shape having a lead wire insertion portion 5 in the center, and is fixed to the lower end of the tubular portion 11 by a bottom plate fixing screw 10. Further, the terminal block 15 is attached to the lead wire insertion portion 5 of the bottom plate 1.
The mounting portion 17 penetrating through the terminal block 15 and projecting from the side of the terminal block 15 is fixed by the terminal block fixing screw 16. Further, as shown in FIG. 4, the cover 14 of the box 13 under the floor is fitted to the tubular portion 11.

The compression coil spring 2 is mounted on the bottom plate 1. In the embodiment, the terminal block 15 is fitted and supported.
The outlet main body 3 is mounted on the upper end of the compression coil spring 2 and projects from the floor hole.
Has a lead wire 6 passing therethrough, and the inner portion of the lead wire 6 inside the compression coil spring 2 is formed in a coil shape capable of expanding and contracting. That is, the outlet body 3 is the lead wire insertion portion 2
A main body portion 23 having a bottom portion 21 and a pair of side wall portions 22 which form 0, and is inserted between the side wall portions 22 of the main body portion 23 to connect the lead wire 6 to the lower end surface and to connect the plug insertion port 5
0 is provided on the side surface, and a cover set screw 25 is attached to the upper surface of the side wall portion 22 to fix the outlet section 24 and to fix the inner peripheral edge 8 of the plate 7.
It comprises a cover 26 that can be locked to. Then, the outlet main body 3 is slidably inserted into the tubular portion 11, a recess (not shown) on the lower surface of the main body portion 23 engages with the upper end portion of the compression coil spring 2, and the electrical outlet body 3 is pulled out of the tubular portion 11. In the projecting state, the peripheral edge of the bottom portion 21 is locked to the inner peripheral edge 8 of the plate 7 so as not to be pulled out.
Further, the lead wires 6 are wired in the box 13 via the terminal block 15 fixed to the bottom plate 1, and as shown in FIG. The lead wires 6 of a book are bundled and formed in a coil shape.

The locking means 4 releasably locks the state in which the consen main body 3 is projected from the floor hole and the state in which it is housed in the floor hole against the compression coil spring 2. In the embodiment, the guide groove 28 and the stopper recesses 29 and 30 formed in the axial direction on the inner surface of the tubular portion 11 and the outlet main body 3 that is slidably engaged with the guide groove 28 and locked in the stopper recesses 29 and 30 are provided. The locking projection 52 and the operation portion 27, which is an example of a concave portion formed on the upper surface of the cover 26, are provided. That is, when the locking protrusion 52 is located in the guide groove 28, the outlet main body 3 can move in the axial direction, and the compression coil spring 2 causes the outlet main body 3 to protrude from the cylindrical portion 11 and the main body portion 23.
With the peripheral edge of the bottom portion 21 of the plate 7 locked to the inner peripheral edge 8 of the plate 7, the locking projection 52 comes to a position facing the stopper recess 29, and the operation portion 27 is rotated to move the locking projection 52 to the stopper recess 2.
9, the outlet body 3 is held in a state of protruding from the floor hole, and similarly, the outlet body 3 is pushed against the compression coil spring 2 and the cover 26 is retained on the inner peripheral edge 8 of the plate 7. The locking projection 52 is the stopper recess 30.
When the outlet main body 3 is rotated, the engaging projection 52 is engaged with the stopper recess 30 and the outlet main body 3 is held in the floor hole.

According to this embodiment, when the operating portion 27 is rotated to move the locking projection 52 of the locking means 4 from the stopper recess 30 to the guide groove 28, the compression coil spring 2 is extended and the outlet main body 3 is opened. When protruding from the floor hole and rotating the operating portion 27 to lock the locking projection 52 into the stopper recess 29, the outlet main body 3 is held in a projected state. In addition, the operation unit 27
Is rotated to move the locking projection 52 from the stopper recess 29 to the guide groove 28, press the outlet main body 3 to compress the compression coil spring 2 and lock the locking projection 52 in the stopper recess 30, so that the outlet main body 3 is in the floor hole. Is kept in the stored state.

When the outlet body 3 projects from the floor hole, the coiled portion of the lead wire 6 expands, and when the outlet body 3 is housed in the floor hole, the coiled portion of the lead wire 6 contracts. Therefore, the lead wire 6 is not sandwiched between the compression coil springs 2, the insulation coating of the lead wire 6 can be prevented from being damaged, and safety can be improved. The second embodiment of the present invention is shown in FIG. That is, this floor outlet is one in which the three lead wires 6 are alternately wound in a coil shape in the first embodiment.

The present invention can also be applied to those without the terminal block 15. Further, the locking means 4 is not limited to the above embodiment. Further, although the cover 26 is a disc, it may be a prism.

[0014]

In the floor outlet of the present invention, the outlet main body can be projected onto the floor by the compression coil spring, and the lead wire is passed through the compression coil spring. Since it is formed in a possible coil shape, the lead wire also expands and contracts as the compression coil spring expands and contracts, so the lead wire is not sandwiched between the compression coil springs, thus preventing damage to the insulation coating of the lead wire. There is an effect that can be achieved.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a first embodiment of the present invention.

FIG. 2 is a partially cutaway perspective view of a plate.

FIG. 3 is a partial perspective view showing a lead wire and a compression coil spring.

FIG. 4 is a side view of an assembled state.

FIG. 5 is a plan view thereof.

FIG. 6 is an exploded perspective view showing a state in which the tubular portion is separated from the box.

FIG. 7 is a partial perspective view showing a lead wire and a compression coil spring according to a second embodiment.

FIG. 8 is a sectional view of a conventional example.

FIG. 9 is a partial cross-sectional view of the outlet main body in a protruding state.

FIG. 10 is a partial perspective view showing a lead wire and a compression coil spring of a proposed example.

FIG. 11 is a partial perspective view of a state in which a lead wire is sandwiched by compression coil springs.

[Explanation of symbols]

 1 Bottom plate 2 Compression coil spring 3 Outlet body 4 Locking means 6 Lead wire

Claims (1)

[Claims] 1. A bottom plate disposed inside a floor hole, a compression coil spring having a lower end portion mounted on the bottom plate, and a compression coil spring mounted on an upper end portion of the compression coil spring and protruding from the floor hole. The outlet main body having a lead wire that passes through the compression coil spring, the state in which the consen main body is projected from the floor hole, and the state in which the main body is housed in the floor hole against the compression coil spring are respectively disengaged. An outlet for a floor, comprising an engaging means for enabling engagement, wherein an inner portion of the lead wire inside the compression coil spring is formed in an expandable coil shape.