JP2017086362A - Chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chair configured to be easily and accurately nested, while widening a breadth of a seat part.SOLUTION: A chair 1 includes: a seat part 3; a pair of frames 2 that include support parts 2D for rotatably and substantially horizontally supporting a rear part of the seat part 3, and crank parts 30 including first bent parts 30A bent in an inside direction on a lower side of the support parts 2D, and second bent parts 30B continued from the first bent parts 30A and bent obliquely forward and downward in a floor surface direction on the lower side of the edge of the seat part 3, where front leg parts 2C are continuously attached to the second bent parts 30B; a pair of rear leg parts 2B installed on the frames 2 at an interval apart from each other, the interval being wider than the width of the front leg parts 2C; and a backrest 2A supported by the frames 2.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a chair.

  A chair capable of nesting to stand up by flipping up the seat and stacking in the front-rear direction is attached to the frame, a backrest supported by the frame, front and rear legs that support the frame, and rotatably mounted on the frame And a seat.

  In order to perform nesting, it is necessary to make the distance between the front legs and the distance between the rear legs different. In order to ensure stability when sitting, it is desirable that the distance between the rear legs is wider than the distance between the front legs. From the viewpoint of manufacturing cost, it is desirable that the structure of each leg is as simple as possible.

  However, if the distance between the front legs is narrower than the distance between the rear legs, the lateral width of the seats that can be installed must be reduced. If the structure of each leg part is simplified, the seat part will be installed between the two front leg parts, so the lateral width of the seat part will be narrower than the distance between the front leg parts.

  In this regard, the distance between the front legs of the seat mounting portion is increased to the distance between the rear legs, the front legs are skewed, and the front legs that enter the rear legs of other chairs during nesting. A chair has been proposed in which the portion is narrower than the seat mounting portion (for example, Patent Document 1, particularly FIG. 3).

  However, if the front legs are skewed, it is difficult to nest at the correct position during nesting. When the back leg of the other chair is aligned with the front leg of one chair, it is difficult to know the straight position of the chair. May end up.

JP 2005-218535 A

  The problem to be solved by the present invention is to provide a chair that can easily perform accurate nesting while taking a wide width of the seat.

  In order to solve the above-mentioned problem, a chair according to the present invention is a chair that can be nested in the front-rear direction, and a support part that supports a seat part and a rear part of the seat part so as to be rotatable and substantially horizontal, and A first bent portion that bends inwardly below the support portion and further bends in the floor surface direction below the edge of the seat portion; and is further connected to the edge of the seat portion in succession to the first bent portion. A pair of frames each having a second bent portion that is bent downward and obliquely forward downward in the floor surface direction, the front leg portion having a crank portion that is continuously attached to the second bent portion, and wider than the width of the front leg portion on the frame A pair of rear legs installed at intervals, and a backrest supported by the frame.

  According to the present invention, there is an effect that it is possible to provide a chair that can easily perform accurate nesting while taking a wide width of the seat portion.

The front perspective view of a chair. The back perspective view of a chair. The bottom view of a chair. The front view of a chair. Rear view of the chair. The enlarged view of a crank part. The perspective view of a crank part. The figure which shows the state which flipped up the seat part of the chair. The side view at the time of nesting a chair.

  Hereinafter, an embodiment of a chair 1 according to the present invention will be described with reference to the drawings. In the present embodiment, a chair that can be nested and can be stowed up and stowed up and stored in the front-rear direction will be described as an example.

  1 is a front perspective view of the chair 1, FIG. 2 is a rear perspective view of the chair 1, and FIG. 3 is a bottom view of the chair 1. As shown in FIGS. 1 to 3, the chair 1 includes a backrest 2 </ b> A, a frame 2 that supports the backrest 2 </ b> A from both sides, a pair of front leg portions 2 </ b> C and a pair of rear leg portions that are attached to the frame 2, and a seat portion. 3.

  The backrest 2A is formed of resin and has a through hole whose size changes according to a certain rule. The frame 2 that supports the backrest 2A is supported by the front legs 2C and the rear legs 2B. A front caster 4C is attached to the tip of the front leg 2C on the ground contact part side, and a rear caster 4B is attached to the tip of the rear leg 2B on the ground contact part side.

  The seat 3 is rotatably supported by the frame 2 and substantially horizontally. The seat 3 rotates between a seating position and a nesting position that is flipped up in the direction of the backrest 2A. A support member 5 is bridged over the frame 2. The seat portion 3 includes a receiving portion 26 that comes into contact with the support member 5. When the seat portion 3 rotates and is positioned at the sitting position, the receiving portion 26 comes into contact with the support member 5, and the downward rotation from the seating position of the seat portion 3 is restricted.

  The frames 2 are respectively arranged outside the seat portion 3 in the width direction. Therefore, the frame 2 is disposed so as to sandwich the seat portion 3 from both sides in the width direction.

  FIG. 4 is a front view of the chair 1, and FIG. 5 is a rear view of the chair 1. As shown in FIGS. 4 and 5, the frame 2 is supported by two front leg portions 2C and two rear leg portions 2B. The rear leg portion 2B extends in a substantially straight line from the frame 2 obliquely in the rear direction and the floor surface direction of the chair 1. The rear leg 2B is attached to the frame 2 so that the interval gradually increases from the frame 2 toward the floor surface.

  The front leg portion 2C extends obliquely from the frame 2 toward the front of the chair 1 and toward the floor surface, and bends substantially perpendicularly to the floor surface before the floor surface.

  In the frame 2, the interval at the attachment portion of the seat portion 3 is substantially equal to the interval between the rear leg portions 2B. Therefore, it is possible to increase the width of the seat portion 3 to a width that does not interfere with the frame 2.

  The frame 2 bends substantially vertically inward at the portion past the mounting portion of the seat portion 3 toward the floor surface, and further laterally near the edge of the seat portion 3, that is, by the outer diameter of the rear leg portion 2B. After going straight in the direction, it bends substantially vertically and extends obliquely in the floor direction.

  Therefore, the frame 2 has a crank portion 30 that is bent inward by the outer diameter of the rear leg portion 2B immediately below the edge of the seat portion 3. The upper end portion of the front leg portion 2 </ b> C is attached to the lower end of the crank portion 30.

  The distance between the rear legs 2B gradually increases as the distance from the floor surface decreases so that the distance W1 between the outer ends of the front casters 4C of the front legs 2C is narrower than the distance W2 between the ends of the inner sides of the rear casters 4B.

  Therefore, the front leg 2C does not cause physical interference with the rear leg 2B of the other chair 1 when nesting is performed. In addition, since the crank portion 30 is provided, when the nesting is performed, the front leg portion 2C of one chair 1 and the rear leg portion 2B of the other chair 1 are not engaged with each other and cannot be removed.

  FIG. 6 is an enlarged view of the crank portion 30. As shown in FIG. 6, the crank portion 30 is bent at an angle substantially perpendicular to the inner side below the support portion 2 </ b> D that is supported by the frame 2 so that the rear portion of the seat portion 3 is rotatable and substantially horizontally. A first bent portion 30A, and a second bent portion 30B that is continuous with the first bent portion 30A, and further bends at a substantially vertical angle downward and obliquely forward downward in the vicinity of the edge of the seat portion 3 again. . Here, the rear when seated is simply referred to as the rear, and the front when seated is simply referred to as the front. Accordingly, the pair of front leg portions 2C below the crank portion 30 are parallel to each other. The frame 2 is sandwiched between the front leg portion 2C and the crank portion 30, and is continuous in a straight line in a side view. That is, the front leg portion 2C is formed so as to extend in the direction in which the second bent portion of the crank portion 30 extends.

  The crank part 30 can be provided with a bumper 31 at the part where the rear leg part 2B of the other chair 1 abuts during nesting. The crank portion 30 includes a bumper 31 at a portion facing the front side of the first bent portion 30A and a portion facing the outside of the second bent portion 30B.

  It is desirable that the bumper 31 is formed of a flexible resin because it can absorb an impact and it is difficult to make a sound when it comes into contact. The bumper 31 may further include a guide portion 32 that guides the rear leg portion 2B of the other chair 1 that abuts.

  When the bumper 31 has the guide part 32, the crank part 30 bends inward by the length obtained by adding the width of the guide part 32 to the outer diameter of the rear leg part 2B.

  FIG. 7 is a perspective view of the crank portion 30 portion. As shown in FIG. 7, the guide part 32 has an acute angle part with an angle θ at the front end in the floor surface direction. The angle θ is preferably 15 ° or more and 60 ° or less, and more preferably 30 °.

  In the frame 2, the tip portion of the crank portion 30 has a pipe shape. The front leg portion 2C has a pipe shape, and a pipe-shaped core member 42 is inserted therein. The tip of the core member 42 on the crank portion 30 side protrudes from the front leg portion 2 </ b> C, and this protruding portion is inserted into the tip of the crank portion 30.

  And in the connection part shown by the code | symbol 41, the predetermined part by the side of the bumper 31 of the flame | frame 2 and the front leg part 2C is notched, and the frame 2, the core material 42, and the front leg part 2C are fixed by welding.

  On the other hand, the bumper 31 has an L-shaped locking in cross section on the surface that contacts the tip of the crank portion 30 of the frame 2 and the arrow-shaped key 33 having a thin tip and the surface that contacts the upper end of the front leg 2C. Part 34. On the other hand, an insertion hole is provided in a portion corresponding to the key portion 33 at the tip of the crank portion 30 and a portion corresponding to the locking portion 34 of the front leg portion 2C.

  The bumper 31 is fixed so that it does not come off when the locking portion 34 is first inserted into the insertion hole of the front leg portion 2 </ b> C, and then the key portion 33 is elastically deformed and inserted into the insertion hole of the frame 2. In addition, the bumper 31 can cover and hide the welding marks generated by the above welding.

  When nesting the chair 1, the rear leg portion 2 </ b> B of the other chair 1 first comes into contact with the guide portion 32. Since the guide portion 32 has an angle θ, the rear leg portion 2B of the other chair 1 that has come into contact moves along the edge of the guide portion 32 so as to slide, and comes into contact with the laterally extending portion of the crank portion 30. . Therefore, the nesting can be smoothly performed by the guide unit 32.

  In addition, the bumper 31 can reduce noise generated by the rear legs 2B of the other chairs 1 and the frame 2 colliding with each other during nesting, thereby avoiding deformation due to contact and paint wear.

  FIG. 8 is a diagram illustrating a state in which the seat portion 3 of the chair 1 is flipped up. As shown in FIG. 8, the seat portion 3 is supported by the support portion 2 </ b> D so as to be rotatable and substantially horizontal behind the seat portion 3, so that it springs when rotated in the direction of the backrest 2 </ b> A. Raised.

  When the seat portion 3 is flipped up, the seat portion 3 and the backrest 2A of the other chair 1 do not cause physical interference, so that nesting is possible.

  FIG. 9 is a side view when the chair 1 is nested. As shown in FIG. 9, the front leg 2 </ b> C of the chair 1 at the right end in FIG. 9 enters between the rear legs 2 </ b> B of the chair 1 adjacent to the left side thereof. At this time, the rear legs 2B of the adjacent chairs 1 are guided to the guide part 32 of the bumper 31 even if the angle is slightly shifted in the initial stage of nesting, and are densely nested at an appropriate position.

  As described above, the chair 1 of the present embodiment includes the backrest 2A, the frame 2 having the crank portion 30 that supports the rear portion of the backrest 2A in a rotatable and substantially horizontal manner and bends at a substantially right angle in the inner direction. A pair of front legs 2C attached to the frame 2 and a pair of rear legs installed at a wider interval than the width of the front legs 2C, and a seat 3 supported rotatably on the frame 2 are provided.

  Therefore, it is possible to provide a chair that can easily perform accurate nesting while keeping the width of the seat portion wide and preventing the front leg portion 2C of the chair 1 and the rear leg portion 2B of the other chair 1 from engaging with each other. There is an effect that can be.

DESCRIPTION OF SYMBOLS 1 Chair 2 Frame 2A Backrest part 2B Rear leg part 2C Front leg part 2D Support part 3 Seat part 4B Rear caster 4C Front caster 5 Support member 26 Receiving part 30 Crank part 31 Bumper 32 Guide part 33 Key part 34 Locking part 42 Core material

Claims (8)

A chair that can be nested in the front-rear direction,
A seat,
A support portion that supports the rear portion of the seat portion so as to be rotatable and substantially horizontal; and a first bent portion that is bent inward in the lower portion of the support portion, and is further continuous with the first bent portion. A pair of frames having a second bent portion bent downward in the floor surface direction and obliquely downward downward below the edge of the seat portion, and having a crank portion with a front leg portion attached continuously to the second bent portion;
A pair of rear legs installed on the frame at a wider interval than the width of the front legs,
A backrest supported by the frame;
A chair equipped with. The frame is
The chair according to claim 1, wherein the front leg portion and the crank portion are sandwiched between the chairs and are linearly continuous in a side view. The crank portion is
The chair according to claim 1, further comprising a bumper at a portion where the rear leg portion of another chair abuts during nesting. The crank portion is
The chair according to claim 1, further comprising a bumper at a portion facing the front side of the first bent portion and a portion facing the outside of the second bent portion. The bumper is
The chair according to claim 3, further comprising a guide portion that guides the rear leg portion of another chair to the abutting portion during nesting. The guide part is
The chair according to claim 5, comprising an acute angle portion having an angle of 15 ° or more and 60 ° or less at a front end in the floor surface direction. The crank portion is
The chair according to claim 5, wherein the chair is bent inward by a length obtained by adding the width of the guide portion to the outer diameter of the rear leg portion. The bumper is
The chair according to any one of claims 3 to 7, wherein a welding mark between the frame and the front leg portion is covered.

Images