JP2012120771A - Chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chair which can carry out nesting not only from a cross direction but from a right and left direction in a chair in which nesting two or more chairs horizontally is possible, and to provide a chair in which time and effort which arrange legs in a direction of nesting at the time of nesting is saved, and nesting is possible from two or more directions.SOLUTION: The chair is a chair in which a back and a seat freely rotate, and the seat can concentrate freely up and down, wherein a leg part of the chair includes a pair of front legs of right and left, and a pair of back legs of right and left, respectively, in a front view of the chair, one pair of legs of right and left is located in medial to the other pair of legs of right and left, and in a side view of the chair, one pair of legs of back and forth is located in medial to the other pair of legs of back and forth.

Description

  The present invention relates to a chair having a back and a seat, which can be overlapped (nested) in a horizontal direction in a state where the seat is flipped upward.

  Conventionally, a chair that can be nested in the front-rear direction with the seat flipped upward is known. For example, the chair described in Patent Document 1 is a leg portion having a gate-shaped front and rear legs on the left and right sides in a side view, and a horizontal horizontal ridge constructed between the left and right legs. Further, it is configured to extend upward and attach a back, and to pivotally support the rear end of the seat so as to be rotatable. When the seat is used, the seat is horizontally rotated and the lower surface of the seat is received by the horizontal rod.

  In such a chair, the leg member has a side-view portal shape, and nesting is possible only in the front-rear direction. Therefore, when stacking a plurality of chairs, it takes time to align the legs in the front-rear direction. Become. Moreover, since the leg part of the chair hangs down from the left and right side surfaces of the seat, there is a problem that the leg part is exposed to a large amount, and an object is easily hit against the leg pad and easily damaged. Furthermore, since the difference in appearance from a normal pipe chair is small, there is a problem that it is difficult to feel a novel design, and it is particularly difficult for the user to recognize that the chair can be nested.

  On the other hand, a nestable chair composed of legs provided radially from the lower end of a vertical column is disclosed. For example, in the chair shown in Patent Document 2, five legs are evenly provided at equal angles radially from the lower end of a support column that is erected vertically from below the seat, and between the two rear legs, It is the structure which inserts the center front leg among the three front legs in the chair.

  In this case, an odd number of legs are provided at an equal angle, the positions of the legs are made different between the front and back of the chair, and one leg is inserted between a plurality of legs, and the legs are overlapped in the front-rear direction. . For this reason, this configuration has the disadvantage that the legs collide with each other and it is difficult to superimpose them. In addition, it is difficult to recognize that the chair can be nested, and even if the chairs are stacked in the front-rear direction, the legs are intertwined in a complex manner, so the chair can be pulled out sideways even a little. If they are displaced, there is a problem that the legs collide with each other and cannot be separated well.

  Furthermore, the configuration of Patent Document 3 includes a chair in the rear by having horizontal legs radially from the lower end of a vertical support column standing below the seat and changing the height of the front and rear legs. The front leg is stored below the rear leg of the front chair. In this case, the leg structure is provided horizontally and radially from the lower end of the support column. Furthermore, since the support column part is rotatable, it is necessary to return the leg to the normal position in order to overlap the front and rear chairs.

  Moreover, since the leg of the other chair is inserted into the gaps in the plurality of legs extending radially from the support column, there is a drawback that nesting is difficult. In addition, it is difficult to recognize that the chair can be nested by the appearance of the legs, especially when the chair legs are slightly displaced laterally with the front and back chairs overlapped, The legs collided and the front legs of the back chair got stuck under the back legs of the front chair, so it was necessary to lift the back chair to pull the chair apart. .

  In any case, the above document assumes nesting from one direction in the front-rear direction, and when nesting the chair, it is necessary to align the legs in one direction before and after nesting.

Japanese Patent Laid-Open No. 2001-128776 Japanese Patent No. 3482901 Japanese Patent No. 3730119

  An object of the present invention is to provide a chair capable of nesting not only in the front-rear direction but also in the left-right direction, in a chair capable of nesting a plurality of chairs in the horizontal direction. Furthermore, it is an object of the present invention to provide a chair that can be nested from a plurality of directions while eliminating the trouble of aligning the legs in the nesting direction during nesting.

  In order to solve the above-mentioned problems, the invention according to claim 1 of the present invention is a chair whose back and seat are rotatable and the seat is tiltable up and down, and the leg portion of the chair is a pair of left and right front legs. And a pair of left and right rear legs, and the pair of left and right legs are located inward of the other pair of left and right legs in the front view of the chair, and The chair is characterized in that the legs are located inside the other pair of front and rear legs.

  According to this configuration, in addition to nesting in the front-rear direction, nesting in the left-right direction that overlaps the front and back legs in the side view of the legs is possible, and multiple chairs can be nested from two directions. Is possible.

  According to a second aspect of the present invention, in the chair according to the first aspect, the leg portion extends radially and asymmetrically from a lower portion of the seat downward. According to this configuration, the legs of the legs are radially and asymmetrically extended so that nesting from a plurality of directions is possible, and even when the seat is flipped up in a vertical state, the legs Does not protrude greatly forward, and it is possible to achieve high designability and safety. In particular, even when nesting a plurality of chairs, the front legs and the rear legs are neatly aligned, so that the appearance is good, and the user can easily recognize the direction in which the chairs are closely overlapped in the front-rear direction.

  The invention according to claim 3 is the chair according to claim 1 or 2, wherein the tilt angle of the pair of left and right legs and the tilt angle of the other pair of left and right legs in the front view of the chair are as follows. Are different. According to this configuration, the pair of left and right legs can be connected to the inside or outside of the other pair of left and right legs in a front view of the chair by a simple configuration in which the front and rear legs have different inclination angles in the left and right directions. It is possible to overlap a plurality of chairs in the front-rear direction.

  The invention according to claim 4 is the chair according to any one of claims 1 to 3, wherein an inclination angle of the pair of front and rear legs and an inclination angle of the other pair of front and rear legs in a side view of the chair. Are different. According to this configuration, the side surface of the chair has a simple configuration in which the inclination angle in the left-right direction of the front and rear legs in front of the hand and the inclination angle in the left-right direction of the front and rear legs in the back are different. In view, it is possible to position a pair of front and rear legs inwardly or position another pair of front and rear legs and to superimpose a plurality of chairs in the left-right direction.

  As an example in which the chair 1 of the present invention is suitably used, as shown in FIG. 1, the chair 1 has a back 10 and a seat 30, and the back 10 and the seat 30 are rotatable in the left-right direction, Further, the chair 1 is a chair 1 that can freely flip the seat 30 up and down. And this chair 1 is the chair 1 which can be overlap | superposed (nesting) in a horizontal direction in the state which raised the seat 30 mentioned later upwards, and is especially the some direction of the front-back direction and the left-right direction. It is possible to nest chairs from.

Below, the structure of the chair 1 of this invention is explained in full detail.
First, as shown in FIG. 2, the leg 20 in the chair of the present invention includes a pair of left and right front legs 21 and 22 that extend radially downward from an elliptical cylindrical base 25 and a pair of left and right rear legs. The legs 23 and 24 have a total of four legs, and casters 28 are attached to the lower ends of the legs 21, 22, 23, and 24 via leg end tools 27.

  These legs are formed in an asymmetrical shape, which will be described later, and when viewed from the front, either the left or right pair of legs (21, 22 or 23, 24) is the other leg (23, 24 or 21, 22). The pair of left and right front and rear legs (21, 23 or 22, 24) are located inside the other legs (22, 24 or 21, 23) in a side view. Nesting from multiple directions is possible.

  A shaft hole 26 is formed substantially at the center of the leg base 25 in the leg 20, and a horizontal rod 32 that supports a back plate 11, an armrest 15 and a seat plate 35, which will be described later, is formed in the shaft hole 26. It is pivotally supported so as to be rotatable in the left-right direction.

  The horizontal rod 32 has a support shaft 31 that is pivotally supported by the shaft hole 26 of the leg base 25, and further, a left and right rod 33 extending from the left and right of the horizontal rod 32 toward the rear, And a plate-like mounting plate 34 erected from the end portion of the left and right rods 33. The mounting plate 34 is formed with a shaft hole 39 for pivotally supporting the seat plate 35 in a tiltable manner in the vertical direction and a plurality of screw holes for mounting the back plate 11 and the armrest 15.

  In order to pivotally support the seat 30 to be tilted in the vertical direction, which will be described later, it is formed at the left and right rear ends of the seat plate 35 to shaft holes 39 formed in the left and right mounting plates 34 of the horizontal rod 32. The shaft hole 36 is pivotally supported so as to be rotatable in the vertical direction. A seat surface 37 having cushioning properties is fixed to the upper surface of the seat plate 35.

  On the other hand, the concave portion 13 of the plate-like attachment portion 12 extending below the back plate 11 is engaged with the attachment plate 34 of the horizontal rod 32, and the outer surface of the attachment portion 12 of the back plate 11 is further engaged. After engaging the convex portion 16 formed on the inner surface of the armrest 15 with the concave portion 14 formed on the inner surface of the armrest 15, the back plate 11 and the armrest 15 are integrally fixed to the mounting plate 34 of the horizontal rod 32 with screws or the like. The cover member 18 is attached to the recess 17 formed on the outer surface of the armrest 15 so as to cover the parts such as screws.

  Thereby, as shown in FIG. 3, the back plate 11, the armrest 15, and the seat plate 35 can be rotated in the left-right direction together with the horizontal rod 32 above the leg portion 20 (arrow a in the figure). is there. Further, the seat plate between the vertical state in which the seat plate 35 and the back plate 11 face each other and the horizontal state in which the seat receiver 38 formed of a depression provided on the back surface of the seat plate 35 is placed on the horizontal rod 32. 35 can be tilted up and down (arrow b in the figure).

  In particular, in the chair 1 of the present invention, the leg portion 20 extends radially and asymmetrically from the leg base portion 25 located at the lower portion of the seat 30, and the seat plate 35 is erected in a vertical state, so that FIG. As shown in FIG. 2, it is possible to overlap a plurality of chairs 1 in the front-rear direction or the left-right direction.

  That is, as shown in FIG. 5, the leg 20 is inclined from the leg base 25 in the plan view, and linear legs 21, 22, 23, and 24 are formed asymmetrically. 21 and 22 are positioned inside the rear legs 23 and 24, and the front and rear right legs 22 and 24 are positioned inside the front and rear left legs 21 and 23.

  Thereby, nesting from two directions, which is described later, when the leg portions 20 are overlapped in the front-rear direction (X direction in the drawing) and in the left-right direction (Y direction in the drawing), is possible. . At this time, needless to say, it is necessary to rotate the spine 10 and the seat 30 (not shown) in a predetermined nesting direction (dotted line a in the figure).

  For example, when nesting the chair 1 of the present invention in the front-rear direction (X direction), as shown in FIG. 6A, the inclination angle α of the front legs 21, 22 with respect to the leg base 25 in the front view of the leg portion 20 is Since the inclination angle β of the rear legs 23 and 24 is larger (α> β) and the substantially lower half of the front legs 21 and 22 is positioned inside the rear legs 23 and 24 (x <x ′), FIG. As shown in b), in the plan view of the leg 20, the lower halves of the front legs 21 and 22 of the plurality of chairs can be inserted between the rear legs 23 and 24 of the plurality of chairs and sequentially nested. is there. Therefore, as shown in FIG. 7, it is possible to nest a plurality of chairs 1 in the front-rear direction (X direction).

  On the other hand, as shown in FIG. 8A, in the side view of the leg 20, the inclination angle α ′ of the right legs 22 and 24 with respect to the leg base 25 is larger than the inclination angle β ′ of the left legs 21 and 23 (α ′). > Β ′), and the substantially lower halves of the right legs 22 and 24 are positioned inside the left legs 21 and 23 (y <y ′), so that as shown in FIG. In plan view, the lower halves 22 and 24 of the plurality of chairs can be nested between the left legs 21 and 23 of the plurality of chairs. Therefore, as shown in FIG. 9, a plurality of chairs 1 can be nested in the left-right direction.

  Thus, the chair 1 of the present invention can be nested not only in the front-rear direction but also in the left-right direction. Therefore, it is possible to provide a highly usable chair capable of nesting from a plurality of directions while eliminating the trouble of aligning the legs in the nesting direction during nesting.

  The above example shows an example in which the front leg x is smaller than the rear leg x ′ in the front-rear direction nesting (x <x ′), but the front leg x is larger than the rear leg. (X> x ′) may be configured such that a plurality of chairs 1 are nested in the front-rear direction. Similarly, in the left-right nesting, the above example shows an example in which the right leg interval y is smaller than the left leg interval y ′ (y <y ′). A configuration may be adopted in which a plurality of chairs are nested in the left-right direction as being larger than the left leg y ′ (y> y ′).

  Further, the distance between the front leg x and the right leg y is made equal (x = y), and the distance between the rear leg x ′ and the left leg y ′ is made equal. Are equal (x ′ = y ′), the front-rear direction X and the left-right direction Y can be nested without distinction. Thereby, it is possible to further save the trouble of aligning the legs in the nesting direction during nesting, and it is possible to provide a chair that can be nested from a plurality of directions.

  In any case, the leg arrangement of the legs in the chair of the present invention is asymmetrical, and in the front view of the chair, either of the front and rear, the pair of left and right legs are located inside the other pair of left and right legs, and In the side view of the chair, either the left or right pair of front and rear legs is positioned inward of the other pair of front and rear legs so that the legs can be nested from each other in a plurality of directions. The shape and arrangement are not particularly limited.

It is a perspective view which shows the chair of this invention. It is an exploded view of a chair. It is a perspective view which shows an example of the usage type of a chair. It is a perspective view which shows an example of the usage type of a chair. It is a top view which shows a leg part. It is (a) front view (b) top view which shows the leg part at the time of the nesting in the front-back direction. It is a figure which shows the chair of this invention at the time of front-back direction nesting. It is (a) front view (b) top view which shows the leg part at the time of the nesting in the left-right direction. It is a figure which shows the chair of this invention at the time of left-right direction nesting.

DESCRIPTION OF SYMBOLS 1 Chair 10 Back 11 Back board 12 Attachment part 13 Concave part 14 Concave part 15 Armrest 16 Convex part 17 Concave part 18 Cover member 20 Leg part 21 Front leg (left)
22 Front leg (right)
23 Rear legs (left)
24 Rear legs (right)
25 Leg base portion 26 Shaft hole 27 Leg end tool 28 Caster 30 Seat 31 Support shaft 32 Horizontal rod 33 Left and right rod 34 Mounting plate 35 Seat plate 36 Shaft hole 37 Seat surface 38 Seat receiver 39 Shaft hole

Claims (4)

A chair whose back and seat are rotatable and the seat is tiltable up and down,
The leg portion of the chair has a pair of left and right front legs and a pair of left and right rear legs,
In the front view of the chair, the pair of left and right legs are located inside the other pair of left and right legs, and
In the side view of the chair, the pair of front and rear legs are positioned inside the other pair of front and rear legs. The chair according to claim 1, wherein the leg portion extends radially and asymmetrically from a lower portion of the seat downward. 3. The chair according to claim 1, wherein an inclination angle of the pair of left and right legs in the front view of the chair is different from an inclination angle of the other pair of left and right legs. 4. The chair according to claim 1, wherein an inclination angle of the pair of front and rear legs in a side view of the chair is different from an inclination angle of the other pair of front and rear legs.

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