JP2013094195A - Liftable chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liftable chair which is simply configured, is thinly foldable and storable without taking a large space.SOLUTION: Guide grooves 4 are formed on side faces of columns 1 provided in an opposing state. A back frame 2 is vertically movably provided between the columns 1, and has a lower guide shaft 15 and an upper guide shaft 16 to be inserted to the guide grooves 4. The back frame 2 is provided with a seat stay 14, and a seat 3 is attached to the seat stay 14 so as to be turned to a sprung-up position and a horizontal position. When the back frame 2 is elevated, the upper guide shaft 16 enters a stopper groove 7 and the back frame 2 is held in an inclined state so as not to be lowered.

Description

  The present invention relates to a liftable chair that can be stored under a floor or under a tatami mat.

  2. Description of the Related Art Conventionally, liftable chairs that are stored under a passenger seat in a folded state or can be stored under a floor or the like are known (see, for example, Patent Documents 1 and 2). However, this type of conventional chair has a complicated folding structure for the seat and backrest, and since the thickness (width) in the folded state is large, it requires a large storage space and can be easily installed. Can not.

Japanese Utility Model Publication No. 59-1555 (column 6, lines 2 to 17, FIGS. 1 to 3) Japanese Examined Patent Publication No. 5-86205 (Claims, FIGS. 1 to 7)

  A problem to be solved by the present invention is a chair that can be stored under the floor or under a tatami mat, etc., which has a simple structure and can be folded thinly and can be stored without taking up a large space. Is to provide.

  According to the present invention, it has a cylindrical column having a guide groove standing upright and extending in the up-down direction, a side frame portion along the inner side surface of the column, and a back frame portion connecting the upper end of the side frame portion. A back frame; a seat stay fixed in the middle of the side frame portion of the back frame; and a seat provided on the seat stay so as to be rotatable to a flip-up position and a seating position. When a lower guide shaft inserted into the guide groove so as to be movable in the vertical direction and an upper guide shaft located above the lower guide shaft are provided, and when the back frame is moved above the support along the guide groove, There is provided an elevating chair characterized in that a stopper groove extending rearward from the upper end of the guide groove is provided so that the upper guide shaft is engaged, and the above-mentioned problem is solved.

  Further, according to the present invention, there is provided the elevating chair that supports the base so as to be able to turn and stand upright so that the support can be laid down and stand up, and supports the support so as to be able to move up and down. This solves the above problem. Furthermore, the above-described liftable chair provided with an upper surface plate is provided so as to close the upper surface of the storage portion when the support column is laid down or lowered.

  The present invention is configured as described above, and connects a cylindrical column having a guide groove standing upright and extending vertically, a side frame portion along the inner side surface of the column, and an upper end of the side frame portion. A back frame having a back frame part, a seat stay fixed in the middle of the side frame part of the back frame, and a seat provided on the seat stay so as to be rotatable to a flip-up position and a seating position, The side frame is provided with a lower guide shaft inserted into the guide groove so as to be movable in the vertical direction and an upper guide shaft positioned above the lower guide shaft, and the back frame is disposed above the support along the guide groove. Since the stopper groove extending backward from the upper end of the guide groove is provided so that the upper guide shaft engages when moved, the back frame is pulled up above the support column and the upper guide shaft is positioned at the upper end of the guide groove. When the upper guy When the shaft is engaged with a stopper groove that extends backward from the guide groove, the back frame is tilted backward and held in the raised position with the lower guide shaft in the guide groove and the upper guide shaft entering the stopper groove. In this state, if the seat is unfolded and rotated to a substantially horizontal seating position, the seat can be seated. Then, contrary to the above, if the seat is flipped up and the back frame is raised so that the upper guide shaft moves from the stopper groove to the guide groove, the upper guide shaft and the lower guide shaft can be lowered along the guide groove. The back frame and the seat can be stored between the columns, and a large storage space is not required.

  If the column is configured to be able to fall and stand, the column can be stored on the floor, under the tatami, etc. Can be used as a normal floor or tatami mat.

The perspective view of the use condition which shows one Example of this invention. The perspective view seen from the bottom face. The perspective view of the state which accommodated the back frame. The side view which shows the relationship between a support | pillar and a back frame. Explanatory drawing which shows the relationship between a seat and a back frame. The perspective view which shows the relationship between a seat bracket and a seat stay. The explanatory view of the state which showed the example which made the support and can stand and stand up, and covered the upper part with the upper plate after lying the support. Explanatory drawing which shows the state in the middle of opening a top plate from the state shown in FIG. 7, and raising a support | pillar. Explanatory drawing of the state which fully stood the support | pillar from the state shown in FIG. 8, and folded the upper surface board. Explanatory drawing which shows the state which pulled up the back frame from the state shown in FIG. Explanatory drawing which shows the state which inclined the back frame back from the state shown in FIG. 10, and was hold | maintained in the raise position. Explanatory drawing which shows the state which turned the seat to the seating position from the state shown in FIG. 11, and was able to sit down.

  The elevating chair of the present invention can be used in a sports facility, a seat in a theater, or any other appropriate place. Hereinafter, an embodiment that can be suitably used in a temple or the like will be described. With reference to FIGS. 1 to 3, the liftable chair of the present invention includes a cylindrical column 1 standing upright, a back frame 2 positioned between the inner surfaces of the column 1, and a back frame 2. It has a seat 3 located.

  A guide groove 4 extending in the vertical direction is formed on the inner side surface of the column 1, and an inner square pipe 5 is inserted and fixed so as to be inscribed on the rear side of the inner surface of the square columnar column 1. A guide space 6 opening in the guide groove 4 is formed on the front side. A stopper groove 7 extending rearward is formed at the upper end of the guide groove 4, and the stopper groove 7 is bent in a substantially inverted L shape as shown in FIG. A receiving portion 8 is formed by providing an arc-shaped receiving piece at the upper end of the pipe 5. The upper end of the column 1 is closed with a lid piece 9.

  The support column 1 can be configured to be able to fall down and stand up, or can be configured to rise and fall vertically. In the embodiment shown in the figure, the lower end of each column is connected to a rectangular tube-shaped drive shaft 10, and the drive shaft 10 is rotated by a manual operation or an electric operation such as a motor to raise or lower the column 1. It can be done. In order to be able to move up and down, it may be moved up and down by manual operation or moved up and down by an appropriate cylinder mechanism. In any case, it is preferable to provide an appropriate holding mechanism (not shown) so that the column 1 can be held upright.

  The back frame 2 has a side frame portion 11 along the inner surface of the support column 1 and a back frame portion 12 that connects the upper ends of the side frame portions 11 so that the back frame portion 12 follows the back portion of the body. It is curved. The lower side of the side frame portion 11 is connected by a lower stay 13, and a seat stay 14 is fixed to an intermediate portion. The side frame portion 11 is provided with a lower guide shaft 15 that is inserted in the guide groove 4 of the support column 1 so as to be movable in the vertical direction, and an upper guide shaft 16 positioned above the lower guide shaft 15. A roller 17 is provided at the tip of each guide shaft 15, 16 so as to roll in contact with the guide space 6 of the column. The lower guide shaft 15 moves only in the guide groove 4 and the guide space 6, but the upper guide shaft 16 can enter the stopper groove 7 when the back frame 2 is raised, The roller 17 of the upper guide shaft 16 that has entered the stopper groove 7 is supported by the receiving portion 8. Thereby, there is no possibility that the back frame 2 descends, and the back frame 2 can be reliably held at the raised position and can support the load.

  The seat 3 is attached to a seat stay 14, and is rotatably held by an appropriate attachment structure so that the seat 3 can be moved to a seating position substantially horizontal to the flip-up position. In the illustrated embodiment, a seat bracket 20 having a substantially U-shaped cross section having a seat receiving portion 18 and a side surface portion 19 is rotatably attached to the seat stay 14, and the seat receiving portion 18 of the seat receiving bracket 20 is seated on the seat receiving portion 18. 3 is fixed. A cover 21 covering the back surface is attached to the back surface side of the seat 3, and a handle recess 22 is provided in the cover 21.

  A receiving groove 23 that fits into the seat stay 14 is formed in the side surface portion 19 of the seat bracket 20, and the receiving groove 24 enters the space between the side surface portions 19 of the seat bracket 20 from the back surface side of the seat stay 14. A rotation receiving bracket 25 having the structure is attached to the seat 3. When the seat 3 rotates to a substantially horizontal position, the seat stay 14 contacts the back surface of the seat receiving portion 18 of the seat bracket 20 so that the rotation of the seat 3 can be stopped and held at that position. The stopper 26 is fixed. With this configuration, the seat 3 can be stopped and seated at a substantially horizontal position. Further, if the front portion of the seat 3 is flipped up, the seat 3 rotates and the upper end moves in the direction of the back frame portion 12 of the back frame 2, and is aligned substantially along the side frame portion 11. At this time, if an appropriate fastener (not shown) fitted to the lower stay 13 is provided at the rear end or the like of the cover 21, the seat 3 can be held in a raised state.

  The chair unit 27 composed of the support column, the back frame, the seat and the like can be provided in parallel. In the embodiment shown in the figure, the above-mentioned chair units 27 are arranged side by side in the horizontal direction and arranged in the same manner in the front and rear, and the chair units 27 are fixed to the drive shaft 10 for each of the front row and the rear row. The chair unit can be stored almost in a tatami mat in a lying state. Then, the support column 1 of the chair unit on one side is rotated counterclockwise from the lying state to stand upright, and the other support column 1 is rotated clockwise to control the rotation direction of each drive shaft. The drive shaft is provided under the floor such as under the tatami mat. An upper surface plate 29 is provided on the floor surface and the tatami surface so as to cover the upper surface of the storage unit 28 in which the chair unit 27 is accommodated. The top plate 29 is composed of two members connected so as to be able to be folded in two via a hinge 30, and the base end is connected to a ballet 32 provided on the side of the storage portion 28 via a hinge 31. Appropriate spacers 33 are provided on the back surface of the upper surface plate 29 and the side surfaces of the support column 1 so that the upper surface plate 29 does not bend when the upper surface plate 29 is unfolded.

  When not in use, the chair unit 27 configured as described above is stored under the floor as shown in FIG. 7, and the upper surface of the storage unit 28 is closed by an upper surface plate 29 having a tatami mat or the like formed on the surface. In use, when the upper plate 29 is lifted by hand and the drive shaft 10 is rotated by manual operation or electric operation, the column 1 rotates and gradually rises as shown in FIG.

  When the support column 1 stands up completely, as shown in FIG. 9, the upper surface plate 29 is folded and positioned along the front surface or the rear surface of the support column 1. Then, as shown in FIG. 10, when the back frame 2 is pulled up and the upper guide shaft 16 is engaged with the stopper groove 7, the upper end of the back frame 2 is inclined rearward and held in the raised position ( FIG. 11). Finally, when the seat 3 is expanded to a substantially horizontal seating state, the chair is completed as shown in FIG. To store, the seat 3 is flipped up in the reverse procedure, the back frame 2 is lowered along the support column 1, the support column 1 is laid down and stored in the storage unit 28, and the upper surface is covered with the upper surface plate. Cover it.

1 support 2 back frame 3 seat 4 guide groove 5 inward corner pipe 6 guide space 7 stopper groove 10 drive shaft 11 side frame portion 12 back frame portion 13 lower stay 14 seat stay 15 lower guide shaft 16 upper guide shaft 17 roller 20 seat support Bracket 25 Rotating bracket 26 Stopper 27 Chair unit 28 Storage section 29 Top plate

Claims (5)

  A cylindrical column having a guide groove standing upright and extending in the vertical direction; a back frame having a side frame portion along the inner surface of the column; and a back frame portion connecting the upper ends of the side frame portions; A seat stay fixed in the middle of the side frame portion of the frame, and a seat provided on the seat stay so as to be pivotable between a flip-up position and a seating position; A lower guide shaft that is movably inserted and an upper guide shaft that is positioned above the lower guide shaft are provided, and the upper guide shaft is engaged when the back frame is moved above the column along the guide groove. A liftable chair characterized by having a stopper groove extending rearward from the upper end of the guide groove.   The elevating chair according to claim 1, wherein a base end of the support column is rotatably supported so that the support column can fall down and stand up.   The elevating chair according to claim 1, wherein the column is supported so as to be movable up and down so that the column can be raised and lowered.   The elevating chair according to claim 2 or 3, wherein an upper surface plate is provided so as to close the upper surface of the storage portion when the support column is laid down or stored while being lowered.   The support column is formed in a rectangular tube shape, and an inward square pipe is inserted into the support column to form a guide space that opens into a guide groove, and the lower guide shaft and the upper guide shaft are rolled in the guide space. The liftable chair according to any one of claims 1 to 4, wherein a roller is provided, and a receiving portion for supporting the roller of the upper guide shaft when the upper guide shaft enters the stopper groove is provided at an upper end of the inward square pipe.

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