JPH11221171A - Chair and chair type stool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chair type stool which allows a user to open and close a seat plate very simply when he uses the stool even if the seat plate is of high grade to result in heaviness, in which the seat plate 3 does not constitute an obstacle when he uses the stool, and which permits the user to take an easy attitude in leaning on the back support of chair. SOLUTION: On the seating surface of a chair body 1, a seat plate 3 is placed movably, and the left and right tails of the seat plate 3 are pivoted on the left and right tails of the chair body 1, respectively, and the seat plate 3 is made capable of rising and falling with respect to the seating surface. Guide grooves stretching in the direction to the front and rear are formed at the left and right sides of the seat plate 3 or the left and right sides of the chair body 1, and the pivot shafts furnished at the left and right tails of the chair body 1 or the left and right tails of the seat plate 3 are fitted in the guide groove 4 slidably, wherein the seat plate 3 is arranged slidably in the direction to the front and rear with respect to the seating surface. The chair body 1 is tilted back and dropped while the seat plate 3 is slided to the rear of the seating surface so that it is possible that the seat plate 3 is installed in the hung-down state behind the chair body 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a chair and a chair-type toilet.

[0002]

2. Description of the Related Art Recently,
A chair-type portable toilet exhibiting furniture has been commercialized, and this chair-type portable toilet has an interior style that you do not notice at first glance, so it is popular without damaging the appearance of the installation location .

[0003] Such a furniture-style chair-type portable toilet is generally provided with a toilet bowl on a seating surface, and a seat plate provided on the seating surface so as to be able to open and close like a lid of a style toilet. The seat plate can be used as a chair when the seat plate is lying down, and the seat plate can be used as a toilet by raising the seat plate and leaning against the backrest to expose the toilet.

[0004] Furniture-chair-type portable toilets of this type are products aimed at improving the appearance of interiors. Therefore, the most recent types have been upgraded to further improve quality. In addition, the seat plate has been designed to have a thick and comfortable cushion for the purpose of improving the use value as a chair.

[0005] Therefore, the weight of the seat plate is increased, and it is very troublesome to lift and operate the heavy seat plate upward.

[0006] As a result, the users of this kind of portable toilets are mainly those who are weak, such as the elderly and the sick, and many women and the elderly are the caregivers of the sick. Given this, this is an important issue to be solved.

Further, in the above-mentioned conventional portable toilet, there is a drawback that the seat plate cannot be leaned on the backrest when the toilet is used because the seat plate is leaned against the backrest when the toilet is used.

In view of the above situation, the present invention makes it possible to open and close the seat plate very easily when using the toilet even if the seat plate is upgraded, and the seat plate is obstructed when using the toilet. Another object of the present invention is to provide an innovative chair and a chair-type toilet that can lean on a backrest and take a comfortable posture.

[0009]

The gist of the present invention will be described with reference to the accompanying drawings.

A seat plate 3 is movably placed on a seat portion 2 of a seat 1, and the left and right portions of the seat plate 3 are pivotally attached to the left and right portions of the seat 1, and the seat plate 3 is moved relative to the seat surface 2. The seat plate 3 is configured to be able to be raised and lowered, and a slide mechanism 23 for sliding the seat plate 3 in the front-rear direction with respect to the seat surface 2 is provided on the seat surface 2 and the seat plate 3. The chair is characterized in that the seat plate 3 is tilted and dropped to the rear of the stool 1 while being slid to the rear of the seating surface portion 2 so that the seat plate 3 can be disposed in a suspended state behind the stool 1. It is related.

The slide mechanism 23 is provided with a guide groove 4 having a length in the front-rear direction on the left and right sides of the seat plate 3 or the left and right sides of the stool 1. Slidably engages the guide groove 4 with the pivot shaft 5 provided at the rear end portion or the front side portion of the left and right sides of the seat plate 3 to slide the seat plate 3 rearward of the seat surface 2. The chair according to claim 1, characterized in that the seat plate (3) can be disposed in a suspended state behind the seat (1) by tilting and falling to the rear of the seat (1) while moving. .

Further, the slide mechanism 23 is provided with a guide groove 4 having a length in the front-rear direction in the left and right lower portions of the seat plate 3 or the left and right upper portions of the stool 1. A pivot shaft 5 provided at the front left and right lower parts of the seat plate 3 is slidably engaged with the guide groove 4, and the seat plate 3 is slid to the rear of the seat surface 2 while being seated. The chair according to claim 1, characterized in that the seat plate (3) is configured to be tilted and dropped to the rear of the body (1) so that the seat plate (3) can be disposed in a suspended state behind the seat (1).

Further, the slide mechanism 23 is provided with a guide groove 4 having a length in the front-rear direction on the left and right sides of the seat plate 3, and provided on the rear ends of the left and right sides of the seating body 1. A shaft 5 is slidably engaged with the guide groove 4, and the seat plate 3 is slid to the rear of the seat surface portion 2 while the seat plate 3 is slid.
The chair according to any one of claims 1 and 2, characterized in that the seat plate (3) can be disposed in a suspended state behind the seat (1) by tilting and falling backward. It is.

Further, a toilet bowl 6 is provided on the seat surface portion 2, and the toilet bowl 6 is concealed by placing the seat plate 3 on the seat surface portion 2. And a chair-type toilet comprising the chair described in (1).

In addition, the apparatus is configured so that it can be used as a chair by sitting on the seat plate body 3,
The chair according to claim 5, wherein the seat plate body (3) is arranged in a hung state behind the seat body (1) and can be used as a toilet by sitting on the seat surface part (2). It relates to a type toilet.

The seat plate 3 placed on the seat 2 at the rear end before and after the seat 3 or the guide groove 4 projects forward at least from the front end of the seat 2. In addition to the provision of a front slide preventing portion 19 for preventing the slide plate from sliding forward to the position, the seat plate 3 for tilting and dropping to the rear of the seat 1 at the front end of the seat plate 3 or the guide groove 4 is suspended. Rear slide blocker 20 to hold
The chair according to claim 1 or the chair-type toilet according to any one of claims 5 and 6, wherein

Further, a storage container 15 as the toilet bowl 6 is detachably provided in a mounting hole provided in the seat surface portion 2, and an upper opening 15A of the storage container 15 disposed on the seat surface portion 2 or an upper portion thereof. The chair-type toilet according to any one of claims 5 to 7, wherein a closing lid for closing the opening 15A is configured to be concealed by the seat plate 3.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention (how to implement the invention) will be briefly described with reference to the drawings, showing the operational effects thereof.

Since the seat plate 3 is configured to be able to move up and down with respect to the seat surface 2 and to be slidable in the front-rear direction,
May be lifted and slid rearward of the stool 1. For example, when the seat plate 3 is slid rearward via the slide mechanism 23 with the seat plate 3 placed on the seat surface 2, the seat plate 3 may be lifted. The rear end portion is pivoted downward by its own weight while sliding, and furthermore, is tilted and dropped to the rear of the stool 1 by its own weight to be disposed in a suspended state behind the stool 1, and the seat portion is provided. 2 is exposed.

Therefore, the upper portion of the seat surface 2 can be opened by a simple operation of simply pushing the seat plate 3 rearward. According to this operation method, the seat plate that can be opened and closed can be lifted upward. Such a strong force is not required, and the seat plate 3 can be moved rearward by a simple operation to expose the seat surface 2.

Therefore, even in a configuration in which a heavy and thick cushion having a good sitting comfort is provided on the seat plate 3, the moving operation of the seat plate 3 can be easily performed by the smooth pressing and sliding operation. It will be an excellent chair.

Further, the seat plate 3 held in a suspended state at the rear of the seat 1 can be returned to the original position by a simple operation of pulling the seat plate 3 forward.

Therefore, for example, if a toilet 6 is provided on the seat portion 2 and the toilet 6 is concealed by placing the seat plate 3 on the seat portion 2 to form a chair type toilet, Even in the case of a heavy seat plate 3 configuration emphasizing interior characteristics, the opening and closing operation of the seat plate 3 can be performed very easily by the pressing slide as described above without requiring a strong force. Therefore, the chair-type toilet is extremely practical and highly productive, so that even people without sufficient power such as the elderly and the sick can easily open and close the seat plate 3 with sufficient interior characteristics. And, for example, the seat 2
To form a space 12 between the backrest 7 of the stool 1 and
If the seat plate 3 is configured to be tilted and dropped to the rear of the stool 1 via the space 12, the suspended and held seat plate 3 does not exist on the backrest side of the backrest portion 7.
The toilet can be configured as a chair-type toilet that can be used in a comfortable posture leaning on the backrest portion 7.

[0024]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described with reference to the drawings.

This embodiment is applied to a furniture-like chair-type toilet as shown in FIGS.

The stool 1 of this embodiment has a short front leg 9
The seat surface 2 is supported in a horizontally erected state between a pair of side frame members 14 each having a two-stage horizontal bar 11 erected between the rear frame member 10 and a long rear leg body 10. In the figure, reference numeral 11A denotes a horizontal rail erected in two stages between the left and right of the front and rear legs 9 and 10 between the pair of side frame members 14, below the lower horizontal rail 11A erected between the front legs 9. Is configured so that a gap is formed so that a person sitting on the stool 1 can pull his feet backward when performing a standing motion. Also, the lower horizontal rail 11A erected between the front legs 9 is inclined as shown in FIGS. 5 and 6, so that the foot can be easily pulled into the space below the lower horizontal rail 11A when standing up. .

More specifically, a plate-shaped seating surface portion 2 is provided between the upper horizontal rails 11 of the pair of side frames 14 in a state of being bridged.

A mounting hole is provided in the center of the seat 2,
The outer edge of the upper opening 15A of the storage container 15 (bucket) for storing the toilet as the toilet bowl 6 is detachably placed and locked on the opening edge of the mounting hole portion, and the storage container 15 is suspended from the seat surface portion 2. I have.

Further, the toilet seat plate 13 is removably mounted and locked on the seat surface portion 2 and the storage container 15 cannot be removed by simply mounting and locking the toilet seat plate 13 on the seat surface portion 2. It is configured as follows. In the figure, reference numeral 21 denotes a placement assisting member which can place and lock the toilet seat plate 13 in a slightly floating state from the seating surface portion 2, and escapes from the upper opening portion 15A of the storage container 15 by the placement assisting member. 13 can be stably placed and locked. Also,
A cushion member 18 is provided on the upper surface of the toilet seat plate 13 to ensure good sitting comfort.

Further, a backrest 7 is provided in an extended state between the pair of rear legs 10 and the seating surface 2 via a space 12, and an intermediate portion between the upper end of each front leg 9 and each rear leg 10. An armrest 8 is provided between the armrests.

In the present embodiment, the toilet 6
The seat plate 3 which can conceal the seat plate 3 is placed, and the left and right rear ends of the seat plate 3 are pivotally attached to the left and right rear ends of the seating body 1 so that the seat plate 3 And is configured to be undulating,
A slide mechanism 23 for sliding the seat plate 3 in the front-rear direction with respect to the seat surface 2 is provided on the seat surface 2 and the seat plate 3, and the seat plate 3 is slidable back and forth with respect to the seat surface 2. Make up.

The slide mechanism 23 will be described in detail. In the first embodiment shown in FIGS. 3 to 6, the left and right sides of the seat plate 3 mounted and locked on the seat surface 2 have a length in the front-rear direction. While the guide groove 4 is provided, a pivot shaft 5 is provided inside the middle portion of the left and right rear legs 10, and the pivot shaft 5 is connected to the guide groove 4.
3 shows a case where the slidable engagement is adopted. Therefore, the seat plate 3 can be moved up and down with respect to the seat surface portion 2 using the pivot shaft 5 as a support shaft, and the guide groove 4
The seat plate 3 can be moved rearward with respect to the seat surface portion 2 by the pivot shaft 5 slidably engaged with the seat surface portion 2.
And can be tilted and dropped to the rear of the stool 1 via the.

In the second embodiment shown in FIGS.
A guide groove 4 having a length in the front-rear direction is provided on the left and right bottom portions of the seat plate 3, and a pivot shaft 5 slidably engaged with the guide groove 4 is provided between the left and right rear leg bodies 10. Side beam 11
A case is shown in which it protrudes from the left and right upper portions of A. More specifically, a receiving frame 22 having a substantially C-shaped cross section and having a length as shown in FIGS. 7 and 8 is provided on the left and right bottoms of the seat plate 3 so that the narrow opening 22A faces downward of the seat plate 3. Buried in the guide groove 4
On the other hand, a pivot shaft member 24 as shown in FIGS. 8 and 9 is protruded rearward and obliquely upward from the left and right upper portions of the upper horizontal rail 11A provided between the left and right rear legs 10. . As shown in FIG. 8, the distal end of the pivot shaft member 24 has a cross-sectional shape capable of being undetachably engaged with the receiving frame 22, and is rotatably engaged with the receiving frame 22. The pivot shaft 5 is formed to have a longitudinal sectional shape which can be slidable, and the pivot shaft 5 is slidably engaged with the guide groove 4. Accordingly, also in the second embodiment, the seat plate 3 can be moved up and down with respect to the seat surface portion 2 using the pivot shaft 5 as a support shaft, and the guide groove 4 The seat plate 3 can be moved rearward with respect to the seat portion 2 by the pivot shaft 5 which is slidably engaged. Further, the seat plate 3 is slid back to the rear of the seat surface portion 2 through the space 12. Stool 1
It is configured so that it can be tilted and dropped backward.

The undulating slide structure of the seat plate 3 with respect to the seat surface 2 shown in the first and second embodiments has a configuration that can be simply designed and realized, and is excellent in mass productivity and can be provided at low cost. .

In this embodiment, the seat plate 3 placed on the seat 2 at the front and rear rear ends of the seat 3 protrudes forward from the front end of the seat 2. A front slide prevention portion 19 for preventing the slide plate 19 from sliding forward is provided, and a rear slide prevention portion for holding the seat plate 3 that is tilted and dropped to the rear of the seat 1 at the front end of the guide groove 4 in a suspended state. 20 are provided.

More specifically, a projection projecting downward is formed at the rear end of the bottom surface of the seat plate body 3 and is referred to as the front slide prevention portion 19, and the front slide prevention portion 19 is provided at the rear end. When the seat plate 3 is locked to the rear surface of the upper horizontal rail 11A erected between the legs 10, the forward sliding of the seat plate 3 is prevented. Is set to a position that satisfies. This configuration can be easily designed and realized, can be mass-produced, and can be provided at low cost.

The front end of the guide groove 4 is formed to be finite, and the front end of the guide groove 4 is used as the rear slide preventing portion 20. When the pivot shaft 5 is engaged with the rear slide preventing portion 20, the seat plate is formed. 3 is configured to prevent the rearward slide, and the formation position of the rearward slide prevention portion 20 is set to a position that satisfies the condition at the time of the rearward slide. This configuration can also be easily designed and realized.

Therefore, when the seat plate 3 is slid rearward while the seat plate 3 is placed on the seat surface portion 2, the protruding distal end side of the seat plate 3 projecting rearward from the seat 1 through the space 12 is formed. Since there is no support, the rear end portion pivots downward by its own weight while slidingly moving the seat plate 3, and furthermore, it tilts down to the rear of the stool 1 by its own weight and is substantially vertically below the backrest portion 7. It is configured to be held in an upright suspended state, and as a result, the seat surface 2 is exposed.

Further, the front end of the seat plate 3 can be lifted and slid rearward of the seat 1.

When the seat plate 3 held behind the stool 1 is pulled forward, the seat plate 3
Can be returned to the original position, and the toilet 6 can be concealed.

In this embodiment, a gripping ring 16 made of a flexible material such as cloth is provided at the front end of the seat plate 3, and the gripping ring 16 is gripped by hand to move the seat plate 3 backward. It is configured to be able to push and pull the seat plate body 3 held in a suspended state behind the stool 1 toward the near side. Therefore,
The gripping ring 16 allows the seat plate 3 to be pushed and pulled very easily, and the seat plate 3 can be easily opened and closed. Further, since the gripping ring 16 is flexible, it does not become a hindrance even when it is used as a chair while sitting on the seat plate 3, making it very practical.

In this embodiment, a cushion member 17 is provided on the upper surface of the seat plate 3 to ensure good sitting comfort.

Next, a method of using the present embodiment will be described with reference to the operation.

When used as a chair, the toilet plate 9 is concealed by placing the seat plate 3 on the seat surface 2. Therefore, in the chair-type toilet according to the present embodiment, the toilet 6 has two horizontal rails 11 on all sides.
With the help of being surrounded by 11A, at first glance, the appearance of the portable toilet is not noticeable, and the seat plate 3
Can be used sitting on top.

When the seat plate 3 is used as a toilet, when the grip ring 16 is grasped and the seat plate 3 is pushed backward, the seat plate 3 is tilted and dropped to the rear of the seat 1 through the space 12, and The seat plate 3 is disposed in a suspended state in which the seat plate 3 stands vertically at the rear. The seat plate 3 is seated on the toilet seat plate 13 (cushion material 18) which is exposed by disposing the seat plate body 3 behind the seat body 1, and the toilet is used. At this time, the seat plate 3 is tilted down from the space 12 below the backrest 7 to the rear of the stool 1 and is suspended and held almost directly below the backrest 7, so that the backrest of the backrest 7 is provided. It is also possible to use the toilet with a comfortable posture leaning on the surface. After using the toilet, the toilet seat plate 13 is removed to take out the storage container 15. In addition, when the toilet user stands up, the foot can be pulled into the gap below the horizontal rail 11A and the armrest 8 can be shackled, so that even the elderly or sick can easily stand up. Will be.

The slide mechanism 23 is not limited to the first and second embodiments described above.
A guide groove 4 having a length in the front-rear direction is provided on the inner surface of the upper horizontal rail 11 of each of the left and right side frame members 14, while the seat plate member 3 is provided.
A pivot shaft 5 which can be slidably engaged with the guide groove 4 may be provided on the front side of the left and right side portions of the upper side cross bar 11 of each of the left and right side frame bodies 14 of the stool 1. A guide groove 4 having the same structure as that of the second embodiment having a length in the front-rear direction is provided. (It is necessary to secure a location where the guide groove 4 is formed on the upper surface of the seat plate 3).

When such a slide mechanism 23 is employed, the seat plate 3 is placed on the seat surface 2 when the seat plate 3 is placed on the seat surface 2.
Cannot be lifted by raising the front end of the seat plate (the rear end of the seat plate 3 can be lifted).
Is slid rearward as it is (in a substantially horizontal state), it projects rearward from the seat 1 through the space 12, and the pivot shaft 5 engaged with the guide groove 4 is moved to the rear end of the seat surface 2. The rear end of the seat plate 3 is tilted downward by its own weight and pivots downward by its own weight because there is no support at the projecting front end side of the seat plate 3 when it reaches the rearward position. , And the seating surface 2 is exposed. In addition, if the seat plate 3 held behind the stool 1 is rotated in a substantially horizontal state and pulled forward, the seat plate 3 can be returned to the original position, and the toilet bowl can be returned. 6 can be hidden.

When such a slide mechanism 23 is employed, the more the pivot shaft 5 is provided on the front end side of the seat plate 3, the more the horizontal posture is maintained when the seat plate 3 is slid backward. Therefore, it must be installed in a state where a large space is required behind the stool 1, which causes problems such as a limited installation place. It is better that the formation position is not so close to the front end of the seat plate 3.

Further, a lock mechanism for locking the seat plate 3 in a state where the seat plate 3 conceals the toilet bowl 6 of the seat surface portion 2 is provided, and the seat plate 3 is moved rearward by releasing the lock mechanism. The configuration may be such that it can be slid, and with such a configuration, the seat plate body 3 does not move without permission and becomes practical.

Further, the seat surface 2 and the seat plate 3 may be configured to be adjustable in height. With such a configuration, the user can adjust and change the seat height to a desired one, and use the seat. Be practical.

[0051]

Since the present invention is constructed as described above, it is possible to open the upper part of the seating surface by a simple operation of simply pushing the seat plate backward, whereby the seating comfort is good, heavy and thick, for example. Even if the seat plate becomes heavy due to the provision of the cushion on the seat plate, a strong force is not required unlike the configuration in which the seat plate that can be opened and closed is lifted upward, and the seat plate is moved by the smooth pressing and sliding operation. An extremely practical chair that can be easily operated.

Therefore, for example, a seat plate which can be opened and closed is provided above the seat surface, and a chair or the like having a storage box or a toilet provided on the seat surface below the seat plate has an optimum configuration.

According to the second aspect of the present invention, in addition to the effect of the first aspect of the present invention, the slide mechanism can be easily designed and realized, and an inexpensive product excellent in mass productivity can be provided, which is more practical.

According to the third aspect of the present invention, in addition to the effect of the first aspect of the present invention, the slide mechanism can be easily designed and realized, and an inexpensive product excellent in mass productivity can be provided, which is more practical.

According to the fourth aspect of the present invention, in addition to the effects of the first aspect, the seat plate can be smoothly raised and lowered with a very simple structure, for example, as in the first embodiment described in the embodiment. An operation and a slide mechanism having a slide operation structure can be realized, which is more practical.

According to the fifth aspect of the present invention, even when the present invention is applied to a chair-type toilet having a heavy seat plate structure with an emphasis on interior characteristics, the opening and closing operation of the seat plate is pressed without requiring a strong force. Alternatively, since it can be performed very easily by a pulling slide operation, even a person without sufficient power such as an elderly person or a sick person can easily open and close the seat plate body with sufficient interior characteristics. It can also be configured as a chair-type toilet excellent in practicality and commerciality, and furthermore, as in the structure of the embodiment, for example, a space is formed between the seat surface and the backrest of the stool, and through this space It is also possible to easily design and realize a configuration in which the seat plate is tilted and dropped to the rear of the seating body. With this configuration, the suspended and held seat plate is present on the backrest side of the backrest portion. I don't A it can be configured to also become su practicality chair toilets be toilet in a comfortable position leaning against this backrest.

According to the invention of claim 6, in addition to the effect of the invention of claim 5, it has a function as a chair, so that a more practical chair type toilet can be obtained.

In the invention of claim 7, claims 5 and 6
In addition to the effects of the invention of the present invention, since the seat plate body is slid forward from the seat surface portion, and the seat plate body is securely prevented from dropping on the installation surface behind the stool, it is more practical. Become a target.

In the invention of claim 8, claims 5 to 7
In addition to the effects of the invention, when the toilet is used, the storage container as the toilet can be easily removed from the seating surface to discard the stool or wash the storage container. The design is feasible, mass production is excellent, and it can be provided at low cost, which makes it more practical.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a use state as a chair of the present embodiment.

FIG. 2 is a perspective view showing a use state of the toilet as the embodiment.

FIG. 3 is a partially exploded perspective view showing a sliding structure of a seat plate body with respect to a seat surface of the first embodiment.

FIG. 4 is a partial cross-sectional view showing a sliding structure of a seat plate body with respect to a seat surface according to the first embodiment.

FIG. 5 is a schematic explanatory view showing an operating positional relationship between a guide groove and a pivot shaft when the chair of the first embodiment is used.

FIG. 6 is a schematic explanatory view showing an operating positional relationship between a guide groove and a pivot shaft when the toilet of the first embodiment is used.

FIG. 7 is a perspective view of a seat plate for explaining a guide groove according to a second embodiment.

FIG. 8 is a partial sectional view showing a sliding structure of a seat plate body with respect to a seat surface according to a second embodiment.

FIG. 9 is a schematic explanatory view showing an operating positional relationship between a guide groove and a pivot shaft when the chair of the second embodiment is used.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Seat 2 Seat 3 Seat plate 4 Guide groove 5 Pivot shaft 6 Toilet bowl 15 Storage container 15A Top opening 19 Front slide prevention part 20 Rear slide prevention part 23 Slide mechanism

Claims (8)

[Claims] A seat plate is movably mounted on a seat portion of a seat, and left and right portions of the seat plate are pivotally attached to left and right portions of the seat, and the seat plate is positioned relative to the seat portion. The seat plate and the seat plate are provided with a slide mechanism for sliding the seat plate in the front-rear direction with respect to the seat surface, and the seat plate is slid to the rear of the seat surface. A chair characterized in that it can be tilted down to the rear of the stool and the seat plate can be disposed in a suspended state behind the stool. 2. The sliding mechanism according to claim 1, wherein a guide groove having a length in the front-rear direction is provided on a left and right side of the seat plate or a left and right side of the seat. A pivot shaft provided on the front side portion of the left and right side portions of the seat plate is slidably engaged with the guide groove, and the seat plate is slid to the rear of the seating portion while being slid to the rear of the seat surface and tilted and dropped to the rear of the seat. 2. The chair according to claim 1, wherein the seat plate is arranged in a hung state behind the seat. 3. The slide mechanism is provided with a guide groove having a length in the front-rear direction at a lower left and right portion of the seat plate or an upper left and right portion of the seat, and a rear end or a seat plate at the upper left and right of the seat. The pivot shafts provided on the front sides of the lower left and right sides of the seat are slidably engaged with the guide grooves, and the seat plate is slid rearward while the seat plate is slid rearward and tilted down to the rear of the seat. 2. The chair according to claim 1, wherein the seat plate is arranged in a suspended state. 4. The slide mechanism is provided with a guide groove having a length in the front-rear direction on left and right sides of the seat plate body, and a pivot shaft provided on a rear end of the left and right sides of the seating body is provided with the guide shaft. The seat plate is slidably engaged with the groove, and the seat plate is slid to the rear of the seat surface portion while being tilted and dropped to the rear of the seat, so that the seat plate can be suspended from the seat. The chair according to claim 1, wherein the chair is configured. 5. The chair according to claim 1, wherein a toilet is provided on the seat portion, and the toilet is concealed by placing the seat plate on the seat portion. A chair-type toilet characterized by comprising. 6. A seat is constructed so that it can be used as a chair by being seated on the seat plate, and the seat plate is arranged in a suspended state behind the seat to be seated on the seat surface. The chair-type toilet according to claim 5, wherein the chair-type toilet is configured to be used as a toilet. 7. A seat plate mounted on the seat surface at front and rear rear ends of the seat plate or the guide groove is slid forward at least to a position protruding forward from a front end of the seat surface. And a rear slide preventing portion for holding a seat plate that is tilted and dropped to the rear of the stool in a suspended state at the front end of the seat plate or the guide groove. The chair according to claim 1, or the chair-type toilet according to claim 5. 8. A storage container as the toilet, which is removably disposed in a mounting hole provided in the seat surface, and an upper opening of the storage container disposed on the seat surface or a closure for closing the upper opening. The chair-type toilet according to any one of claims 5 to 7, wherein a lid is configured to be hidden by the seat plate body.