JP3048070U - Floor outlet - Google Patents

Abstract

(57) [Summary] [Purpose] When storing the middle cylinder with an outlet,
Provided is a vertically movable floor outlet capable of preventing a cable from being caught between windings of a coil spring. [Structure] The winding diameter of a coil spring 11 arranged on the lower surface of a middle cylinder 4 is reduced. The upper end of the small-diameter coil spring 11 is fixed near the center of the lower surface of the middle cylinder 4. The cable 12 for supplying power to the outlet 9 provided in the middle cylinder 4 is connected to the coil spring 11.
Through the outside.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to the improvement of a vertically movable floor outlet that is stored in the floor when not in use and protrudes above the floor when in use.

[0002]

[Prior art]

 OA equipment such as personal computers, word processors, facsimile machines, and optical files is increasing in offices, and floor outlets for supplying power to these OA equipments are often installed on office floors. There are various types of floor outlets, and one of them is an up and down movement in which a middle cylinder with an outlet protrudes above the floor by the elastic force of a coil spring during use. There is a type floor outlet.

FIG. 3 shows an example of a conventional vertically movable floor outlet, in which 20 is a floor plate having a cylindrical portion 21 and a flange portion 22, and 23 is a cylindrical portion 21 of the floor plate 20. An inner cylinder 24 inserted into the inner cylinder, 24 is an outlet serving as a blade receiver set in the intermediate cylinder 23, 25 is a spring receiver fixed to the lower end of the floor plate 20, and 26 is a spring receiver 25 A large-diameter coil spring, which is elastically mounted between a spring receiving groove 27 provided on the lower surface side of the middle cylindrical body 23 and a spring, is a cable for supplying power to the outlet 24.

In the case of this vertically movable floor outlet, when not in use, the middle cylindrical body 23 is stored in the cylindrical portion 21 of the floor plate 20 against the elastic force of the coil spring 26, The stored state is maintained by a lock mechanism that does not perform the operation. When the outlet 24 is used, a lock mechanism is released when a coin or the like is inserted into a concave groove provided in the upper lid 29 of the middle cylinder 23 and turned in a certain direction, and at the same time, the coil is turned off. The middle cylinder 23 protrudes above the floor surface by the elastic force of the spring 26.

[0005]

[Problems to be solved by the invention]

 In the case of using the vertically movable floor outlet as described above, the middle cylindrical body 23 is stored in the cylindrical portion 21 of the floor plate 20 when not in use. It has many advantages such as not hindering walking.

[0006] However, while the vertically movable floor outlet has the above advantages, it has the following disadvantages. That is, the power supply cable 28 connected to the outlet 24 attached to the middle cylinder 23 is connected to the outlet 24 through the inside of the large-diameter coil spring 26 in the tubular portion 21 of the floor plate 20. When the middle cylindrical body 23 protruding on the floor is stored, the extra length of the cable 28 easily enters between the windings of the coil spring 26, and the cable 28 that has entered between the windings causes the contraction of the coil spring 26. At this time, the insulation coating of the cable 28 is gradually damaged due to the crimping, and in severe cases, there is a possibility of causing an electric leakage accident.

Therefore, the present invention solves the above-mentioned disadvantages of the conventional floor outlet, makes the winding diameter of the coil spring significantly smaller than the conventional one, and passes the power supply cable through the outside of the coil spring. In this way, when storing the middle cylinder having the outlet protruding above the floor, it is possible to provide a vertically movable floor outlet which can prevent the cable from being caught between the windings of the coil spring. It is intended for that purpose.

[0008]

[Means for Solving the Problems]

 The structure of the present invention for achieving the above object will be described in detail. According to the present invention, the middle cylinder having the outlet protrudes above the floor surface by the elastic force of the coil spring. In a floor outlet that can be moved up and down, the winding diameter of the coil spring disposed on the lower surface of the middle cylinder is made small, and the upper end of the coil spring having the small diameter is fixed near the center of the lower surface of the middle cylinder. This is a floor outlet characterized in that a cable for supplying power to a cylindrical outlet passes through the outside of the coil spring.

[0009] The invention according to claim 2 is directed to a floor receptacle capable of moving up and down, in which the middle cylinder having the outlet projects above the floor surface by the elastic force of the coil spring. The coil spring arranged on the lower surface of the coil spring has a small diameter and a tapered coil spring that gradually expands from one end to the other end, and the large diameter side or the small diameter side of the tapered coil spring is medium. A floor outlet characterized by being fixed near the center of the lower surface of the cylindrical body, and passing a cable for supplying power to the outlet of the middle cylindrical body through the outside of the tapered coil spring.

According to the present invention, the cable for supplying power to the outlet of the middle cylinder is passed through the outside of the small-diameter coil spring. This prevents the conventional problem from being pinched between the windings.

That is, in the case of the conventional coil spring having a large diameter, the opening length between the windings becomes large, so that the extra length of the cable easily enters between the windings. The winding diameter is significantly smaller than before, and the power supply cable is routed outside the coil spring without passing through the coil spring, so that the extra length of the cable does not easily enter between the windings. It is a structure that can solve the conventional problems.

When the small-diameter coil spring is a tapered coil spring that gradually expands from one end to the other end, when the coil spring is retracted, that is, when the coil spring contracts, the upper and lower portions of the coil spring are moved upward and downward. Since the windings do not overlap each other, it is possible to significantly reduce the vertical space of the entire floor outlet as compared with the conventional case, and it can sufficiently respond to the field of free access floor where low flooring is required. Things.

[0013]

[Embodiment of the invention]

 Hereinafter, the specific configuration of the floor outlet of the present invention will be described in detail based on the illustrated embodiment. FIG. 1 is an explanatory view showing one embodiment of the vertically movable floor outlet of the present invention, and FIG. 2 is an explanatory view showing another embodiment of the vertically movable floor outlet of the present invention.

In FIG. 1, reference numeral 1 denotes a floor plate comprising an annular flange portion 2 which comes into contact with the floor surface and a vertical portion 3 which is continuously formed so as to be orthogonal to the inner peripheral edge of the flange portion 2. In addition, a step portion 7 for fitting a projecting portion 6 of a cover plate 5 attached to the upper portion of the later-described middle cylindrical body 4 is recessed in the inner peripheral edge of the flange portion 2.

The vertical portion 3 may be formed to have a complete cylindrical shape, or may have a structure in which four or more vertical pieces are suspended so as to form a cylindrical shape as a whole. In addition, a male screw 8 for screwing into a mounting opening of a floor box (not shown) is engraved on the outer peripheral surface of the vertical portion 3.

The middle cylindrical body 4 has an outer diameter that can be inserted into the cylindrical vertical portion 3 as a whole of the floor plate 1, and an outlet 9 as a blade receiving portion is attached to a side surface. Yes. Although the outlet 9 of the illustrated embodiment is provided with the blade receiving groove in a horizontal direction, it is a matter of course that the outlet 9 may be formed in a vertical shape.

Next, 10 is a bottom plate fixed to the lower end of the vertical portion 3 of the floor plate 1, and 11 is a coil spring elastically mounted between the bottom plate 10 and the middle cylinder 4. Since the bottom plate 10 side of the coil spring 11 is fixed, the middle cylinder 4 can move up and down under the influence of the elastic force of the coil spring 11. The lock mechanism and the release mechanism that can hold the stored state and the protruded state of the middle cylinder body 4 are the same as those of the conventional type floor outlet, and therefore the description is omitted.

The winding diameter of the coil spring 11 according to the present invention is extremely small as compared with the winding diameter of the coil spring 26 used in the conventional floor outlet shown in FIG. The upper end of the coil spring 11 is fixed near the center of the lower surface of the middle cylinder 4.

The cable 12 for supplying power to the outlet 9 attached to the middle cylinder 4 is connected to the outlet 9 through the outside separated from the coil spring 11 without passing through the winding diameter of the coil spring 11. I have to do it. In the illustrated embodiment, the cable 12 which is to be located in the vertical portion 3 of the floor plate 1 is curled. However, it is a matter of course that the cable 12 may be non-curled.

As shown in FIG. 1, the coil spring 11 may be a normal type coil spring in which the diameters of the windings are the same, but as shown in FIG. A tapered coil spring that gradually expands toward the other end is formed. The large-diameter portion or the small-diameter portion of the tapered coil spring 11 is fixed near the center of the lower surface of the middle cylinder 4, and the outlet of the middle cylinder 4 is connected. The cable 12 for supplying power to the coil 9 may be passed through the outside of the tapered coil spring 11, and a new advantage is obtained by using the tapered coil spring 11 in this manner.

That is, when the tapered coil spring 11 is used, when the use of the outlet 9 is completed and the middle cylinder 4 is stored in the floor plate 1, the coil spring 11 has a small diameter portion due to contraction. Since it is possible to enter the inside of the diameter portion, the windings do not overlap with each other, so that there is an advantage that the vertical space of the entire floor outlet can be significantly reduced as much as before.

In the field of free access floors, in which cables can be freely routed with a double floor, there is a concern that a double floor will lower the ceiling height. By adopting No. 11, it becomes possible to reduce the required height of the entire floor outlet, and it is possible to sufficiently meet the demand for lowering the floor.

[0023]

[Effect of the invention]

 As described above, the floor outlet of the present invention makes the winding diameter of the coil spring, which is the drive source for moving the middle cylinder up and down, much smaller than that of the conventional type, and supplies power to the outlet attached to the middle cylinder. The cable to be inserted is passed through the outside of the coil spring, so that when the protruding middle cylinder is pushed in, the cable is not pinched between the windings of the coil spring, and the insulation of the cable is damaged. Conventional problems such as scratches can be solved. .

When the coil spring having a small diameter is formed as a tapered coil spring that gradually expands from one end to the other end, when the coil spring contracts, the upper and lower windings of the coil spring are wound. Since they do not overlap each other, the height of the floor outlets as a whole can be reduced by that much, which can sufficiently meet the demands of the free access floor field.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing one embodiment of a vertically movable floor outlet of the present invention.

FIG. 2 is an explanatory view showing another embodiment of the vertically movable floor outlet of the present invention.

FIG. 3 is an explanatory diagram showing an example of a conventional floor outlet.

[Explanation of symbols]

 1: Floor plate 2: Flange part 3: Vertical part 4: Middle cylinder body 5: Lid plate 6: Projection part 7: Step part 8: Male screw 9: Outlet 10: Bottom plate 11: Coil spring 12: Cable

Claims (2)

[Utility model registration claims] An up-down movable floor outlet in which an intermediate cylinder body provided with an outlet projects above the floor surface by the resilience of a coil spring. The winding diameter is made small, the upper end of the small-diameter coil spring is fixed near the center of the lower surface of the middle cylinder, and a cable for supplying power to the outlet of the middle cylinder is passed through the outside of the coil spring. A floor outlet characterized by the following. 2. An up-down movable floor outlet in which a middle cylinder body provided with an outlet projects above the floor surface by the resilience of a coil spring, wherein a coil spring disposed on the lower surface of the middle cylinder body is provided. A tapered coil spring having a small diameter and gradually expanding from one end to the other end is formed, and the large diameter side or the small diameter side of the tapered coil spring is fixed near the center of the lower surface of the middle cylindrical body. A floor outlet, wherein a cable for supplying power to the outlet of the middle cylinder body passes through the outside of the tapered coil spring.