JP2547606Y2 - Safety device for electric underfloor storage - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device for an electric underfloor storage having a storage case which can be moved by a drive unit below a floor having an opening.

[0002]

2. Description of the Related Art Conventionally, there has been known an electric underfloor storage in which an opening is provided on a floor of a kitchen, a storage case is arranged below the opening, and the storage case can be moved up and down by a drive unit. (See Japanese Utility Model Application Laid-Open No. 61-184439).

[0003]

In this type of electric underfloor storage, since the storage case is displaced relative to the opening, if a hand or the like is accidentally put into the opening while the storage case is moving. The hand or the like may be pinched between the inner peripheral edge of the opening and the storage case, which may cause injury.

[0004] However, the conventional electric underfloor storage has no solution to this point, and there has been a problem that sufficient consideration has not been given to safety.

[0005] The present invention solves the above-mentioned problems in the prior art, and can greatly improve the safety of an electric underfloor storage and can operate the electric motor smoothly and reliably. The purpose is to provide a safety device for the underfloor storage.

[0006]

The present invention constitutes a safety device 1 in an electric underfloor storage M having a storage case 5 which can be moved by a drive unit 4 below a floor 3 having an opening 2. In particular, the inner peripheral edge 2 of the opening 2
e, the detection plate 7 along the inner peripheral edge 2e is displaceably supported via an elastic body, for example, a coil spring 6, and ON (or OFF) by the displacement of the detection plate 7 inside the detection plate 7. The emergency detection switch 8 is provided. In this case, the inner peripheral edge 2
e, a pair of spaced-apart support pins 10 and 10 protruding from the mount plate 9 and having stoppers 10s at the ends.
It is desirable to use a detection unit 12 that displaceably supports the detection plate 7 by using the coil springs 6 and 6 that are fitted into support pins 10 between the mounting plate 9 and the detection plate 7.

[0007]

According to the safety device 1 of the present invention, when the drive unit 4 is operated to move the storage case 5, if the hand H
If the hand or the like accidentally enters the opening 2, the hand H or the like is sandwiched between the detection plate 7 and the storage case 5.
Is pushed toward the inner peripheral edge 2e by the hand H or the like, so that the detection plate 7 is displaced against the elastic force of the coil springs 6. As a result, the emergency detection switch 8 is turned ON (or OFF) by the displacement action of the detection plate 7, and stops the operation of the drive unit 4 by, for example, causing an emergency stop circuit for the drive unit 4 to function.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments according to the present invention will now be described in detail with reference to the drawings.

First, in order to clarify the present invention, the overall schematic configuration of the electric underfloor storage M will be described with reference to FIG.

The electric underfloor storage M is installed under the floor of a kitchen in a house. The floor 3 is provided with a rectangular opening 2 provided with an openable lid 15.

An elevation drive unit 21 is provided below the opening 2 on the floor 3. The lifting drive unit 21 has the opening 2
Guide mechanisms 22 provided at four locations near the corners of
The guide mechanism 22 includes a vertical guide rail 23 in a vertical direction, and a slider 2 which is slidably mounted on the vertical guide rail 23 and has a support portion 24s.
4 is provided. On the other hand, a drive mechanism 25 is disposed below the guide mechanisms 22. The drive mechanism 25 is a drive motor 2
7, a drive unit 26 incorporating a reduction gear mechanism 28,
The geared wires 29 are moved forward and backward by the drive unit 26, and the leading ends of the geared wires 29 are connected to the sliders 24.

On the other hand, below the floor 3, the driving unit 4 serving as a horizontal movement driving unit is provided. The drive section 4 includes a guide mechanism section 31. The guide mechanism section 31 includes a pair of left and right parallel horizontal guide rails 32, and a two-way type that is connected back and forth freely along the horizontal guide rails 32. Case supporting frames 33x and 33y are provided. Further, a support tray 33xt guided along a vertical frame portion 33xv of the frame 33x is provided below the case support frame 33x (the same applies to the 33y side). The storage case 5 is supported by the support tray 33xt, and upward displacement of the case support frame 33x is allowed. on the other hand,
A drive mechanism 34 is disposed laterally of the guide mechanism 31. The drive mechanism section 34 includes a drive unit 35 having a built-in drive motor and a reduction gear mechanism, and geared wires 38 moved forward and backward by the drive unit 35. The tips of the geared wires 38 are connected to the case support frame 33x.

When the drive unit 35 is operated, the geared wires 38 move forward and backward, so that the case supporting frames 33x and 33y are displaced along the horizontal guide rails 32 and supported by the frames 33x and 33y, respectively. Storage cases 5, 5 below the opening 2, respectively.
Can be selectively located.

The storage case 5 located below the opening 2 is moved up and down by the other drive unit 26. That is,
By the operation of the drive unit 26, the geared wires 29 ...
Moves forward and backward, and the sliders 24 are vertical guide rails 23.
Go up and down along ... As a result, the support tray 33xt supported by the support portions 24s of the sliders 24 and the storage case 5 move up and down through the opening 2. In addition,
The lid 15 opens and closes in conjunction with the elevation of the storage case 5.

Next, the configuration of the safety device 1 according to the present invention will be described with reference to FIGS.

Reference numeral 12 denotes a detection unit. The detection unit 12 includes an elongated mounting plate 9 to be mounted on the inner peripheral edge 2 e of the opening 2, and a pair of spaced-apart support pins 10 projecting perpendicularly from the surface of the mounting plate 9 and having a large-diameter stopper portion 10 s at the end. 10, a detection plate 7 having a hole inserted through the support pins 10 and supported by the support pins 10 so as to be displaceable, a detection plate 7 and a mounting plate 9.
Coil springs 6, 6 which are fitted into the support pins 10 between them and urge the detection plate 7 in a direction away from the mounting plate 9, and are provided on the mounting plate 9 at a central position between the respective support pins 10. Emergency detection switch 8
Having. A micro switch or the like can be used as the emergency detection switch 8. Further, the detection plate 7 is selected to have substantially the same length as one side of the opening 2. The upper end of the detection plate 7 above the support pins 10 is bent at a right angle toward the mounting plate 9 to form an L-shaped cross section.

Such a detection unit 12 is previously prepared by assembling integrally. Thereby, as shown in FIG. 1, it can be attached to the floor surface component F or the like on the inner peripheral surface 2 e of the opening 2 by screwing, and the retrofitting becomes easy. In addition, since it is configured as an integrated unit, it is unlikely to cause a failure and functions smoothly and reliably. In addition, a pair of the detection units 12 are prepared and attached to the inner peripheral edges 2 e on both front and rear sides facing the moving direction of the storage case 5.

Next, the function of the safety device 1 will be described.

First, in the natural state, the detection plate 7 is urged in the direction away from the mounting plate 9 by the elastic force of the coil springs 6, and is regulated by the stoppers 10s. Therefore, the emergency detection switch 8 is
It becomes FF. Therefore, for example, the emergency stop circuit connected to the emergency detection switch 8 does not function, and the drive unit 4 performs a normal operation.

On the other hand, as shown in FIG. 1, while the storage case 5 is moving in the
When it is put inside, the hand H is
Sandwiched between. However, at this time, the detection plate 7 is
, And is displaced toward the mounting plate 9 against the elastic force of the coil springs 6..., And the emergency detection switch 8 is turned on.
Let it. Therefore, an emergency stop circuit or the like functions to stop the driving unit 4. 3 to 5 show a state where the detection plate 7 is displaced.

The embodiment has been described in detail above.
The present invention is not limited to such an embodiment.
For example, the detection unit may be mounted downward on the lower surface of the floor component, thereby forming a safety device when the storage case is raised and lowered. In addition, details, configurations, shapes, and the like can be arbitrarily changed without departing from the gist of the present invention.

[0022]

As described above, the safety device for the electric underfloor storage according to the present invention supports the detection plate along the inner peripheral edge via the elastic body at the inner peripheral edge of the opening so as to be displaceable. Since the emergency detection switch which is turned ON (or OFF) by the displacement of the detection plate is provided inside the detection plate, the following remarkable effects are obtained.

[0023] The safety of the electric underfloor storage can be dramatically improved.

It is easy to retrofit the existing electric underfloor storage, and the adoption of the detection unit hardly causes a failure or the like, so that smooth and reliable operation is guaranteed.

[Brief description of the drawings]

FIG. 1 is a partial sectional front view of a safety device according to the present invention,

FIG. 2 is a partial side view of the safety device,

FIG. 3 is a partial cross-sectional plan view of the safety device,

FIG. 4 is a partial cross-sectional view taken along line CC in FIG. 3;

FIG. 5 is a partial cross-sectional view taken along line DD in FIG. 3;

FIG. 6 is a schematic configuration diagram of an electric underfloor storage,

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Safety device 2 Opening 2e Inner peripheral edge 3 Floor surface 4 Drive part 5 Storage case 6 Coil spring 7 Detection plate 8 Emergency detection switch 9 Mounting plate 10 Support pin 12 Detection unit M Electric underfloor storage

Claims (3)

(57) [Scope of request for utility model registration] 1. A safety device for an electric underfloor storage provided with a storage case that can be moved by a drive unit below a floor surface having an opening, wherein an inner peripheral edge of the opening is provided with an elastic body. A safety device for an electric underfloor storage, characterized in that the detection plate along the periphery is displaceably supported, and an emergency detection switch that is turned on (or off) by the displacement of the detection plate is disposed inside the detection plate. . 2. A mounting plate, which is mounted on an inner peripheral edge, and a pair of spaced-apart support pins projecting from the mounting plate and having a stopper at a distal end, the detection pins being displaceably supported by the support pins, and mounted. 2. The safety device for an electric underfloor storage according to claim 1, further comprising a detection unit having a coil spring fitted into a support pin between the plate and the detection plate. 3. The safety device for an electric underfloor storage according to claim 2, wherein an emergency detection switch is provided at an intermediate position between the support pins.