JP2006141820A - Foldable chair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a foldable chair which can be folded into a small size in a chair of an L-shaped frame structure. <P>SOLUTION: The foldable chair is provided with: a vertical frame member 10 extending in a vertical direction; a seat plate 50 supported at the intermediate position of the vertical frame member 10; and a base frame member 30 whose front end is connected turnably to the lower end of the vertical frame member 10. The base frame member 30 selectively takes an opening state position extending on a floor surface with a prescribed angle to the vertical frame member 10 extending in the vertical direction or a folded state position extending along the vertical frame member 10 at a position in front of the vertical frame member 10. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a folding chair, and more particularly to a child chair with a small folding size.

A multifunctional chair with a table for infants is disclosed in Japanese Utility Model Registration No. 3090970 (Patent Document 1). The chair disclosed in this publication has a pair of left and right plate-like legs extending in the vertical direction, a leg base portion whose front end is fixed to the plate-like leg and extending rearward, and a pivotal upper portion of the plate-like leg. And a table coupled in a possible manner. When viewed from the side, the plate-like leg and the leg base form an L-shaped form. During normal use, the table extends forward from the plate-like legs, but can be rotated backward as needed.
Utility Model Registration No. 3090970

  In the chair having the L-shaped frame structure disclosed in Utility Model Registration No. 3090970, the plate-like leg and the leg base portion are fixed, and therefore cannot be folded small. In view of space for storage and transportation, it is desirable to allow the chair to be folded into a small size.

  An object of the present invention is to provide a folding chair that can be folded to a small size in a chair having an L-shaped frame structure.

  A folding chair according to the present invention has a vertical frame member extending in the vertical direction, a seat plate supported at an intermediate position of the vertical frame member, and a front end portion thereof rotatably connected to a lower end portion of the vertical frame member. A base frame member. The base frame member extends along the vertical frame member at an open state position extending on the floor surface at a predetermined angle with respect to the vertical frame member extending in the vertical direction and at a position in front of the vertical frame member. The folding state position to be taken can be selectively taken.

  According to the present invention configured as described above, since the base frame member can be folded along the vertical frame member at a position in front of the vertical frame member, the folding size of the chair can be reduced.

  The folding chair according to a preferred embodiment further includes a handrail member rotatably connected to the vertical frame member at a position above the seat plate. The handrail member can selectively take an open state position extending in the front-rear direction and a folded state position extending along the vertical frame member at a position behind the vertical frame member. . According to this embodiment, since the handrail member can be folded along the vertical frame member in addition to the base frame member, the folding size can be reduced. When the folding chair is a child chair, for example, a table is used as a handrail member.

  Preferably, the folding chair further includes a base frame fixing means for fixing the base frame member in the open state position and the folded state position. More preferably, the folding chair includes handrail fixing means for fixing the handrail member at the open state position and the folded state position.

  Preferably, a compressive load is generated between the base frame member and the vertical frame member in the open state. In one embodiment, the folding chair further includes a load support member that is positioned between the base frame member and the vertical frame member that are in the open state and supports a compressive load generated therebetween. Since the load support member supports the load in the compression direction, the load is supported by the rigidity of the member itself, and the load support structure is strengthened.

  In one embodiment, the load bearing member is fixed to the lower portion of the vertical frame member. More specifically, the vertical frame member includes a pair of vertical side plates located on both sides in the width direction, and the base frame member is a pair of base side plates located on the outer surface side of the pair of vertical side plates on both sides in the width direction. including. The load supporting member is fixed on the outer surface of each vertical side plate so as to be located in the same plane as each base side plate.

  As described above, according to the present invention, a chair with an L-shaped frame structure that can be folded into a small size can be obtained.

  1-6 has shown the folding chair for children based on one Embodiment of this invention. Although FIG. 1 shows a view from one side, it is substantially the same when viewed from the opposite side.

  The folding chair for children includes a vertical frame member 10 extending in the vertical direction, a seat plate 50 supported at an intermediate position of the vertical frame member 10, and legs supported by the vertical frame member 10 at a position below the seat plate 50. A plate 60, a handrail member 40 in the form of a table supported by the vertical frame member 10 at a position above the seat plate 50, and a front end portion thereof are rotatably connected to a lower end portion of the vertical frame member 10. A base frame member 30. When the child chair is viewed from the side, the vertical frame member 10 and the base frame member 30 form an L-shaped frame structure.

  In the illustrated embodiment, the vertical frame member 10 includes a pair of vertical side plates 11 located on both sides in the width direction. The base frame member 30 includes a pair of base side plates 31 positioned on the outer surface sides of the pair of vertical side plates 11 on both sides in the width direction. The distance between the pair of vertical side plates 11 is appropriately maintained by the width direction connecting member 12, the seat plate 50 and the foot plate 60 extending in the width direction in the upper portion. The interval between the pair of vertical side plates 11 is fixed by a width dimension regulating screw member 21 that connects the two.

  FIG. 5 is a cross-sectional view of a connecting portion between the pair of vertical side plates 11 and the seat plate 50 as viewed from the front side. As shown in the drawing, a plurality of grooves 23 extending in the front-rear direction are provided on the inner side surfaces of the pair of vertical plates 11 in the vertical direction. Both ends of the seat plate 50 in the width direction are fitted in the grooves 23. Although not shown, both ends of the foot plate 60 in the width direction are also fitted in the groove 23.

  When the fixing by the width dimension regulating screw member 21 is loosened, the interval between the pair of vertical plates 11 can be widened, so that the seat plate 50 and the foot plate 60 can be detached from the vertical plate 11. Since many grooves 23 are provided on the upper and lower sides, the height of the seat board 50 and the foot board 60 can be appropriately changed according to the growth of the child.

  The handrail member 40 in the form of a table has a rear end portion rotatably connected to the pair of vertical side plates 11 via a rotation shaft 42. The handrail member 40 has an open state position extending in the front-rear direction as shown in FIG. 1, and a folded state position extending along the vertical plate 11 at a position behind the vertical plate 11 as shown in FIG. And can be taken selectively. The illustrated children's chair includes handrail fixing means for fixing the handrail member 40 at the open position and the folded position.

  FIG. 2 is a diagram showing the vertical side plate 11 alone. FIG. 6 is a cross-sectional view showing a structure of a portion related to the upper lock member 41 that locks the handrail member 40 and the vertical side plate 11 in the open state position. Details of the handrail fixing means will be described with reference to FIGS. 1, 2, and 6. As shown in FIG. 2, an upper first lock hole 13 and an upper second lock hole 14 are provided on the outer side surface of each vertical plate 11 at a position equidistant from the upper rotation center hole 18 that receives the rotation shaft 42. It has been. The upper first lock hole 13 is positioned in front of the rotation center hole 18, and the upper second lock hole 14 is positioned below the rotation center hole 18.

  As shown in FIG. 6, an upper lock member 41 is attached to the handrail member 40. The upper lock member 41 includes a head knob portion 41 a that is exposed on the outer side surface of the handrail member 40, and a shaft portion 41 b that passes through the handrail member 40 and protrudes to the inner side surface of the handrail member 40. A spring receiving member 43 is fixed to the shaft portion 41 b of the upper lock member 40. A compression spring 44 is disposed in the handrail member 40 so as to surround the shaft portion 41 b of the upper lock member 41. The compression spring 44 presses the spring receiving member 43, thereby bringing the upper locking member 41 into the locked position.

  The open position of the handrail member 40 is locked when the shaft portion 41 b of the upper lock member 41 engages with the upper first lock hole 13 of the vertical side plate 11. This locked state is released by pulling out the head knob portion 41 a of the upper lock member 41 against the urging force of the compression spring 44. The folding position of the handrail member 40 shown in FIG. 4 is locked by the shaft portion 41 b of the upper lock member 41 engaging with the upper second lock hole 14 of the vertical plate 11.

  As shown in FIG. 6, in order to more firmly stabilize the open position of the handrail member 40, a protrusion 15 in the form of a screw, for example, is provided on the outer side surface of the vertical plate 11. The protrusion 15 contacts the lower surface of the handrail member 40 in the open position from below.

  As shown in FIG. 1 and FIG. 2, each base side plate 31 of the base frame member 30 has a front end portion rotatably connected to each vertical side plate 11 via a rotation shaft 32. The base frame member 30 extends along the vertical frame member 10 at an open state position extending on the floor surface as shown in FIG. 1 and at a front position of the vertical frame member 10 as shown in FIG. The folding state position can be selectively taken. The illustrated children's chair includes base frame fixing means for fixing the base frame member 30 in the open state position and the folded state position. In the illustrated embodiment, the base frame fixing means includes a lower lock member 33 having substantially the same structure as the upper lock member 41 shown in FIG.

  As shown in FIG. 2, each of the vertical side plates 11 of the vertical frame member 10 has a lower first lock hole 16 and a lower second lock hole 17 that are equidistant from the lower rotation center hole 19 that receives the rotation shaft 32. Is provided. The lower first lock hole 16 is located behind the rotation center hole 19, and the lower second lock hole 17 is located above the rotation center hole 19.

  The open position of the base frame member 30 is locked when the lower lock member 33 engages with the lower first lock hole 16 of the vertical plate 11. Further, the folded position of the base frame member 30 is locked when the lower lock member 33 engages with the lower second lock hole 17 of the vertical side plate 11.

  The width direction connecting member 22 is passed between the pair of base side plates 31, and the position of the width direction connecting member 22 is located on the foot plate 60 and the seat plate 50 when the base frame member 30 is in the folded state position. It is chosen not to interfere.

  In the illustrated embodiment, a load in the compression direction is generated between the base frame member 30 and the vertical frame member 10 in the open state. Specifically, the chair includes a load support member 20 that is positioned between the base frame member 30 and the vertical frame member 10 in the open state and supports a load in the compression direction generated between the two. The load supporting member 20 is fixed to a lower portion of each vertical side plate 11. Each load supporting member 20 and each base side plate 31 are located on the same plane.

  As described above, if a configuration in which a compressive load is generated between the vertical frame member 10 and the base frame member 30 is used, the load is supported by the rigidity of the member itself, so that the load support structure is strengthened. Become.

  1 shows the form of the chair in use, FIG. 3 shows the form in the middle of folding, and FIG. 4 shows the form in the folded state. In the folded state of the chair, the base frame member 30 extends along the vertical frame member 10 at the front position of the vertical frame member 10, and the handrail member 40 extends to the vertical frame member 10 at the rear position of the vertical frame member 10. Since it is extended along, the bulkiness of a folded state becomes small. In order to make a small folded chair self-supporting, the shape of the base frame member or the vertical frame member may be devised.

  Although the embodiment shown in FIGS. 1 to 6 is a child chair provided with a table, the present invention is also applicable to an adult chair not provided with a table or a handrail.

  As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to the thing of embodiment shown in figure. Various modifications and variations can be made to the illustrated embodiment within the same range or equivalent range as the present invention.

  The present invention can be advantageously used as a chair capable of reducing the folding size.

It is a side view which shows the folding chair which concerns on one Embodiment of this invention. It is a side view which shows the vertical side board of a vertical frame member. It is a side view which shows the state in the middle of folding of a chair. It is a side view which shows the folding state of a chair. It is sectional drawing which looked at the connection part part of a pair of vertical side board and a seat board from the front side. It is sectional drawing which shows the structure of the part relevant to an upper locking member.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 Vertical frame member, 11 Vertical side plate, 12 Width direction connection member, 13 Upper first lock hole, 14 Upper second lock hole, 15 Protrusion part, 16 Lower first lock hole, 17 Lower second lock hole, 18 Upper turn Movement center hole, 19 Lower rotation center hole, 20 Load support member, 21 Width regulation screw member, 22 Width direction connecting member, 23 Groove, 30 Base frame member, 31 Base side plate, 32 Rotation shaft, 33 Lower lock member , 40 Handrail member, 41 Upper lock member, 41a Head knob portion, 41b Shaft portion, 42 Rotating shaft, 43 Spring receiving member, 44 Spring, 50 Seat plate, 60 Foot plate.

Claims (8)

A vertical frame member extending in the vertical direction;
A seat plate supported at an intermediate position of the vertical frame member;
The front end portion includes a base frame member rotatably connected to the lower end portion of the vertical frame member,
The base frame member extends along the vertical frame member at an open state position extending on the floor surface at a predetermined angle with respect to the vertical frame member extending in the vertical direction and a position in front of the vertical frame member. The folding chair is adapted to be able to selectively take a folded state position extending to the. A handrail member rotatably connected to the vertical frame member at a position above the seat plate;
The handrail member can selectively take an open state position extending in the front-rear direction and a folded state position extending along the vertical frame member at a position behind the vertical frame member. The folding chair according to claim 1. The folding chair according to claim 1 or 2, further comprising base frame fixing means for fixing the base frame member in an open state position and a folded state position. The folding chair according to any one of claims 1 to 3, further comprising handrail fixing means for fixing the handrail member at an open state position and a folded state position. The folding chair according to any one of claims 1 to 4, wherein a compressive load is generated between the base frame member and the vertical frame member in an open state. The folding chair according to claim 5, further comprising a load support member that is positioned between the base frame member and the vertical frame member in an open state and supports a compressive load generated therebetween. The folding chair according to claim 6, wherein the load supporting member is fixed to a lower portion of the vertical frame member. The vertical frame member includes a pair of vertical side plates located on both sides in the width direction,
The base frame member includes a pair of base side plates positioned on the outer surface side of the pair of vertical side plates on both sides in the width direction,
The folding chair according to claim 7, wherein the load supporting member is fixed on an outer surface of each of the vertical side plates so as to be located in the same plane as each of the base side plates.

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