JP2017196111A - Chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chair which is more easily folded than conventional.SOLUTION: A bathroom chair 100 is provided with: front leg frames 110L, 110R; rear leg frames 120L, 120R; and a seat part 140 which is pivotally supported by the rear leg frames 120L, 120R at a position 162 at the back of a first position while pivotally supported by the front leg frames 110L, 110R at the first position 161. A center of gravity of the seat part 140 is positioned at the back of the first position and, by the back of the seat part 140 rotating downward, the chair 100 is folded.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a technique of a chair that can be folded.

  Conventionally, various techniques related to chairs for elderly people and people with physical disabilities are known. For example, Japanese Unexamined Patent Application Publication No. 2011-67448 (Patent Document 1) discloses a bathroom chair. According to Patent Document 1, a leg portion, a seat portion, and a backrest portion are formed, and the seat portion can be freely pivoted between a horizontal state and a state in which the seat portion is pivoted upward and folded. It relates to an attached bathroom chair. A lock device is provided that engages the horizontally rotated seat portion with the leg portion and holds the seat portion in a horizontal state. Further, a release operation tool for performing an operation of releasing the engagement by the lock device is provided on the backrest portion. The release operation tool provided on the backrest portion at a high position of the chair can be operated in an easy standing posture without the need to bend down.

JP 2011-67448 A

  Caregivers who assist the elderly and people with physical disabilities try to fold the chair with the other hand while supporting the elderly or the physically challenged with one hand there is a possibility. Therefore, there is a demand for a chair that can be folded more easily than before. The present invention has been made to meet such demands, and an object of the present invention is to provide a chair that can be folded more easily than before.

  According to an aspect of the present invention, a front leg frame, a rear leg frame, and a seat pivotally supported by the front leg frame at a first position and pivotally supported by the rear leg frame behind the first position. A chair is provided. The center of gravity of the seat is positioned behind the first position, and the chair is folded when the back of the seat rotates downward.

  Preferably, the chair further includes a connection frame that connects the front leg frame and the rear leg frame. When the chair switches from the use state to the folded state, the connecting portion between the seat portion and the rear leg frame includes a connecting portion between the seat portion and the front leg frame, and a middle portion of the connecting frame. It is configured so that resistance is generated when it goes over the connecting straight line.

  Preferably, the connection frame is located directly below the seat portion. The connecting frame is configured to be able to be bent at the middle portion so as to protrude substantially downward so that the rear portion of the seat portion can rotate downward when folded.

  Preferably, in the folded state, the seat portion is maintained tilted forward rather than vertically.

  Preferably, the chair further includes a locking mechanism for locking in either the folded state or the used state.

  As described above, according to the present invention, a chair that can be folded more easily than conventional ones is provided.

It is a front perspective view which shows the use condition of the bathroom chair 100 whole concerning this Embodiment. It is a front view which shows the use condition of the bathroom chair 100 whole concerning this Embodiment. It is a side view which shows the use condition of the whole bathroom chair 100 concerning this Embodiment. It is a top view which shows the use condition of the bathroom chair 100 whole concerning this Embodiment. It is a bottom view which shows the use condition of the bathroom chair 100 whole concerning this Embodiment. It is an image which shows the gravity center position of the seat part concerning this Embodiment. It is a perspective view at the time of folding of the bathroom chair 100 concerning this Embodiment. It is a side view at the time of folding of the bathroom chair 100 concerning this Embodiment. It is an image figure which occupies the fulcrum overcoming at the time of changing from the use state of the bathroom chair 100 concerning this Embodiment to a folding state. It is the perspective view and enlarged view which show the surface of the seat part 140 concerning this Embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same parts are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.
<Overall configuration>

  First, an overall configuration of a bathroom chair 100 according to the present embodiment will be described with reference to FIGS. 1 to 5. 1 to 5 are a front perspective view, a front view, a side view, a plan view, and a bottom view showing the use state of the entire bathroom chair 100 according to the present embodiment.

  The bathroom chair 100 according to the present embodiment mainly includes a pair of front leg frames 110L and 110R on the front side, a pair of rear leg frames 120L and 120R on the rear side, a seat 140 supported by them, and a backrest 145. And a pair of armrests 130L and 130R.

  The pair of front leg frames 110L and 110R are each formed of a hollow pipe. Each of the pair of front leg frames 110L and 110R has a lower part forming a leg part 110A, and the upper part of the leg part 110A is a horizontal part 110B extending horizontally rearward, and the rear part of the horizontal part 110B. A column 110 </ b> C for the backrest 145 is formed by extending further upward from the end portion. The upper ends of the backrest columns 110C and 110C of the pair of front leg frames 110L and 110R are bent to the inside of the bathroom chair 100 and fixed to the back surface of the backrest 145.

  The horizontal portion 110B of the pair of front leg frames 110L and 110R is pivotally supported by a substantially central portion in the front and rear of the lower portion of the seat portion 140 at a portion slightly ahead of the central portion. In other words, the lower portion of the seat portion 140 is configured to be rotatable with respect to the horizontal portion 110B of the front leg frames 110L and 110R around the first shaft 161 spanning the front leg frames 110L and 110R. ing.

  More specifically, the seat 140 according to the present embodiment has a connecting plate 143 for pivotally supporting the first shaft 161 and the second shaft 162 at the lower portion thereof. The seat portion 140 may be integrally molded with the connection plate 143 included, or may be attached to the seat surface after the connection plate 143 is formed.

  Each of the pair of rear leg frames 120L and 120R is formed of a hollow pipe. Each of the pair of rear leg frames 120L and 120R is formed as a horizontal portion 120B whose lower portion forms a leg portion 120A and whose upper portion extends forward.

  The front end portions of the horizontal portions 120B of the rear leg frames 120L and 120R are pivotally supported by the lower portion of the seat portion 140 via the second shaft 162. That is, the rear leg frames 120 </ b> L and 120 </ b> R are configured to be rotatable with respect to the lower portion of the seat portion 140 around the front end portion.

  Pipe-shaped front telescopic legs and rear telescopic legs are slidably attached to the lower portions of the front leg frames 110L and 110R and the rear leg frames 120L and 120R. Accordingly, the lengths of the front leg frames 110L and 110R and the rear leg frames 120L and 120R can be adjusted (height adjustment).

  More specifically, the front leg frames 110L and 110R and the rear leg frames 120L and 120R have a large number of positioning holes at regular intervals, and the front and rear telescopic legs 111 and 121 are attached by springs. A locating pin is provided. That is, the front telescopic leg portion 111 and the rear telescopic leg portion 121 are configured to be fixed in a state of being stretched to an arbitrary length by fitting the positioning pin into an arbitrary positioning hole. Further, leg rubbers 101, 101,... For preventing the bathroom floor from being damaged or slipping are attached to the lower ends of the front elastic leg 111 and the rear elastic leg 121.

  The front leg frames 110L and 110R and the rear leg frames 120L and 120R are connected by a connection frame 150. More specifically, the connection frame 150 includes front links 151 and 151 and a rear link 152. The rear link 152 is formed in a substantially U shape in a bottom view, and the left and right rear end portions are welded to the front side of the upper portion of the leg portions 120A of the rear leg frames 120L and 120R. Front links 151 and 151 are rotatably connected to the left and right of the front portion of the rear link 152 via a connecting portion 153. The front links 151 and 151 are rotatably connected to a third shaft 163 that is pivotally supported in front of the first shaft 161 of the front leg frames 110L and 110R.

  In particular, as shown in FIG. 6, in the present embodiment, the seat 140 is configured such that the rear side of the first shaft 161 is heavier than the front side of the first shaft 161. . That is, the center of gravity of the seat portion 140 is configured to be located behind the first shaft 161. Thereby, when the bathroom chair 100 is lifted, the rear part of the seat part 140 is rotated downward by gravity.

  Below, with reference to FIGS. 1-8, the operation | movement at the time of folding of the chair 100 for bathrooms is demonstrated. FIG. 7 is a perspective view of the bathroom chair 100 according to the present embodiment when folded. FIG. 8 is a side view when the bathroom chair according to the present embodiment is folded.

  First, in the present embodiment, the front leg frames 110L and 110R and the rear leg frames 120L and 120R are opened in a “C” shape as shown in FIGS. 1 to 5 and shown in FIGS. The front leg frames 110L and 110R and the rear leg frames 120L and 120R are close to each other and close to each other through the seat part 140 so that the front leg frames 110L and 110R can be folded and opened and closed.

  For example, the user lifts the backrest 145 by grasping the lower surface of the backrest 145 from the use state of the bathroom chair 100 as shown in FIGS. Then, as shown in FIGS. 7-8, the rear part of the seat part 140 falls below according to gravity. In other words, the seat 140 rotates about the first shaft 161 in the clockwise direction when viewed from the left side. That is, for example, even when the caregiver lifts the bathroom chair 100 with one hand, the bathroom chair 100 is automatically folded.

  In particular, in the present embodiment, when the bathroom chair 100 is lifted, the second shaft 162 is connected to the first shaft 161 and the connecting portion 153 (or the rear leg frames 120L and 120R of the connecting frame 150). Of the straight line connecting the welded portion 164) from the rear side to the front side. And it is preferable that the second shaft 162 is configured to generate a resistance when going over the straight line, especially when going over from the front to the back. For example, the resistance can be realized by adjusting the positional relationship and distance between the first shaft 161, the second shaft 162, the third shaft 163, the welded portion 164, and the connecting portion 153. it can. As a result, the seat 140 is folded upward due to the momentum at the time of folding, but it is possible to reduce the possibility of shifting to the use state at a timing not intended by the user.

  More specifically, as shown in FIG. 9, when the bathroom chair 100 is in use, the second shaft 162 is located behind the straight line. However, when the user lifts the backrest 145 upward in the folded state, the second shaft 162 is positioned in front of the straight line as shown in FIG.

  The resistance when the second shaft 162 crosses the straight line connecting the first shaft 161 and the connecting portion 153 from the rear to the front is such that the center of gravity of the seat portion 140 is behind the first shaft 161. It is preferable to be able to get over by the downward rotation of the rear part of the seat part 140 by being positioned. The resistance when the second shaft 162 crosses the straight line connecting the first shaft 161 and the connecting portion 153 from the front to the rear is such that the center of gravity of the seat portion 140 is located behind the first shaft 161. Thanks to this, it is impossible to get over only by leaning the bathroom chair 100 against a wall or by slowly placing it on the floor, and the user can get over by pushing the front part of the seat 140 downward lightly. It is preferable that it is a grade.

  With such a configuration, when the bathroom chair 100 according to the present embodiment is lifted, the rear of the seat 140 is naturally lowered with the first shaft 161 as an axis, and the rear leg frame 120 is moved forward. The bathroom chair 100 is shortened in the front-rear direction. That is, the bathroom chair 100 is folded compactly in the front-rear direction.

  And even if it does not have a lock mechanism with a resistance mentioned above, since resistance arises when changing from a folding state to a use state, the number of parts can be reduced by that much. As a result, the assembly of the bathroom chair 100 can be facilitated, and the possibility of mold occurring in the gap of the lock mechanism can be reduced.

  In the present embodiment, the seat 140 is maintained obliquely forward and upward during folding. That is, at the time of folding, the seat is maintained from the rear end of the seat 140 to the front upper side. As a result, the front surface of the seat 140 can be easily rotated downward, and as a result, the bathroom chair 100 can be easily changed to a use state. In other words, the bathroom chair 100 according to the present embodiment can be deformed from the folded state to the used state by simply pushing down the front surface of the seat 140.

  In the present embodiment, the connecting frame 150 is bent at the connecting portion 153 so as to protrude downward. As described above, the connection frame 150 includes the front links 151 and 151 and the rear link 152. When the bathroom chair 100 is in use, the rear link 152 extends horizontally, and the front link 151 extends obliquely upward from the front end of the rear link 152.

  With such a configuration, even if the bathroom chair 100 is lifted, the rear portion of the seat portion 140 can be lowered without being obstructed by the connecting frame 150. In other words, when the bathroom chair 100 is lifted, the rear portion of the seat portion 140 has the lower surface of the first shaft 161 and the welded portion 164 to the rear leg frames 120L and 120R of the connecting frame 150. It becomes possible to go down below the connecting straight line.

  Then, the user can shift the bathroom chair 100 to the use state by grasping the backrest 145 with one hand and pushing the front part of the seat part 140 forward and downward. In this embodiment, the seat portion 140 is formed so that the rear portion is heavier than the first shaft 161. However, as described above, the seat portion 140 is tilted and maintained when folded. Therefore, the caregiver and the user can easily switch the bathroom chair 100 to the use state against the gravity with respect to the seat 140 and the resistance when the second shaft 162 crosses the straight line. Become.

  In addition, when it is desired to be firmly fixed in the used state or the folded state, a locking mechanism for locking in the used state and / or a locking mechanism for locking in the folded state is provided on the front leg frames 110L, 110R and the rear leg frames 120L, 120R It may be attached. As a result, the second shaft 162 described above climbs forward from the back to the front to connect the first shaft 161 and the connecting portion 153, thereby maintaining the folded state, that is, the use state. More secure locking may be performed by a lock mechanism while having a temporary lock state for preventing the shift to. Alternatively, when the bathroom chair 100 is used in a state where it is not folded, it is also useful to have a lock mechanism for locking the bathroom chair 100 to the use state.

  In the present embodiment, the left and right armrests 130L and 130R are rotatably supported on the upper portions of the front leg frames 110L and 110R. Each of the armrests 130L and 130R is formed with a step so that the front part is higher than the rear part.

  Next, the configuration of the seat 140 will be described with reference to FIG. FIG. 10 is a perspective view and an enlarged view showing the surface of the seat 140 according to the present embodiment.

The seat 140 according to the present embodiment is formed by attaching a seat cushion 142 made of a soft foam resin to the upper surface of a seat body 141 made of a hard synthetic resin. The seat cushion 142 has a plurality of grooves 142X, 142X,. As a result, water accumulated in the seat cushion 142 can be reduced. That is, the water attached to the seat cushion 142 flows down quickly. As a result, mold or the like is unlikely to grow on the seat 140.
<Summary>

  As described above, the bathroom chair 100 according to the present embodiment is pivotally supported at the first position 161 by the front leg frames 110L and 110R, the rear leg frames 120L and 120R, and the front leg frames 110L and 110R. There is provided a chair 100 comprising: a seat part 140 pivotally supported by the rear leg frames 120L and 120R at a position 162 rearward of the first position. The center of gravity of the seat part 140 is located rearward of the first position, and the chair 100 is folded when the rear part of the seat part 140 rotates downward.

  Preferably, the chair 100 further includes a connecting frame 150 that connects the front leg frames 110L and 110R and the rear leg frames 120L and 120R. When the chair 100 is switched from the use state to the folded state, the connecting portion 162 between the seat portion 140 and the rear leg frames 120L and 120R is connected to the connecting portion 161 between the seat portion 140 and the front leg frames 110L and 110R. And, it is configured such that a resistance is generated when a straight line connecting the middle part 153 of the connecting frame 150 is overcome.

  Preferably, the connection frame 150 is located directly below the seat 140. The connecting frame 150 is configured to be able to be bent at the middle portion 153 so as to protrude substantially downward so that the rear portion of the seat portion 140 can be rotated downward when folded.

  Preferably, in the folded state, the seat 140 is maintained tilted forward rather than vertically.

  Preferably, chair 100 further includes a locking mechanism for locking to either the folded state or the used state.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

DESCRIPTION OF SYMBOLS 100: Bathroom chair 101: Leg rubber | gum 110A: Leg part 110B: Horizontal part 110C: Backrest support | pillar 110L: Front leg frame 110R: Front leg frame 111: Front telescopic leg part 120A: Leg part 120B: Horizontal part 120L: Rear leg frame 120R: Rear leg frame 121: Rear telescopic leg 130L: Armrest 130R: Armrest 140: Seat 141: Seat body 142: Seat cushion 142X: Groove 143: Connection plate 145: Backrest 150: Connection frame 151L: Front link 151R: Front Link 152: Rear link 153: Connection portion 161: First position (connection portion)
162: Second shaft (connecting portion)
163: Third shaft (connecting portion)
164: welded portion (connecting portion)

Claims (4)

The front leg frame,
The rear leg frame,
A seat part pivotally supported by the front leg frame at a first position and pivotally supported by the rear leg frame behind the first position;
The seat is foldable when the center of gravity of the seat is positioned behind the first position and the back of the seat is rotated downward. A connection frame that connects the front leg frame and the rear leg frame;
When the chair switches from the use state to the folded state,
The connecting portion between the seat and the rear leg frame is
The chair according to claim 1, wherein resistance is generated when a straight line connecting a connecting portion between the seat portion and the front leg frame and a middle portion of the connecting frame is overcome. The connecting frame is located directly below the seat;
The chair according to claim 2, wherein the chair is configured to be bent at the middle portion so that the connection frame is convex downward so that the rear portion of the seat portion can rotate downward when folded.   The chair according to any one of claims 1 to 3, wherein in a folded state, the seat portion is maintained tilted forward from the vertical.

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