JP4323264B2 - Chair with shelf - Google Patents

Description

  The present invention relates to a chair with a shelf having a shelf below a seat portion, and more particularly to a chair with a shelf that can be nested and stores a backrest in the front-rear direction.

Conventionally, as a chair provided with a shelf on which an article such as a small article can be placed below the seat, there is a chair that is rotatably attached to the front leg and the rear leg so as not to interfere when the chair is folded ( For example, see Patent Document 1).
In addition, there is a technique in which hook-shaped hooks are provided on both sides of a shelf so that the hooks are hooked on a horizontal arm between the rear legs of the chair (see, for example, Patent Document 2).

Japanese Patent Laid-Open No. 2002-223848 (FIG. 1, abstract) Japanese Utility Model Publication No. 57-99460 (FIG. 1, scope of claim for utility model registration)

  By the way, in an office or meeting place where a large number of chairs are used, when not in use, the chairs are stacked in the front-rear direction (this state is called nesting). When a shelf as shown in Patent Document 1 or 2 is attached to such a chair capable of nesting, there is a problem that nesting becomes impossible due to interference between the shelves of the front and rear chairs.

  The present invention has been made in view of the above-described problems to which the conventional technology belongs, and an object of the present invention is to provide a shelf chair in which the shelves do not interfere during nesting.

According to the present invention, the above problem is solved as follows.
(1) The shaft that supports the seat and the backrest is fixed to the upper ends of a pair of front legs facing diagonally forward and a pair of rear legs facing diagonally backward, and the pair of rear legs is attached to the pair of front legs. Extending outwards, the seat can be rotated to a substantially horizontal use position and a flip-up position facing upward, and the backrests are stacked back and forth with the seat in the flip-up position. In the chair with a shelf that enables nesting together , shelves are attached between the front legs and the rear legs, and the shelves are fixed to the receiving part inclined forward and the front part of the receiving part. The front frame is formed with a front rising frame in which the upper end is locked to the front leg, and is fixed to the rear part of the receiving part, and the upper end connects the upper ends of the front leg and the rear leg to both ends. Width dimension smaller than the front rising frame. And a rear frame in which a rear rising frame is formed, the rear rising frame of the front chair enters between the front rising frames of the rear chair during nesting, and the receiving portions of the front and rear chairs are partially Make sure they overlap.

  (2) In the above section (1), the receiving part, the front frame and the rear frame are made of wire, and the receiving part is made of a plurality of wire loop members formed by bending the wire into a rectangular shape. Are connected by the front frame and the rear frame facing in the left-right direction, and both ends of the front frame and the rear frame are bent to form a front rising frame and a rear rising frame, respectively.

  (3) In the above item (1) or (2), a locking piece is formed at each of the upper ends of the front rising frame and the rear rising frame of the shelf, and the engagement of the front rising frame in the locking hole provided at the rear part of the front leg. A stop piece is inserted and locked, and a lock piece of the rear rising frame is inserted and locked into a lock hole provided inside a connecting rod connecting the front leg and the rear leg.

  (4) In the above item (2) or (3), a rising portion bent upward is formed at one end of the wire loop member, and a rear frame is welded to the bent portion of the rising portion.

  (5) In any one of the above items (1) to (4), a caster is attached to the front leg and the rear leg, and the dimension between the inner surfaces of the rear leg casters is made larger than the dimension between the outer surfaces of the front leg casters.

(A) According to the first aspect of the present invention, the shelf is configured by the front frame and the rear frame fixed to the front and rear of the receiving portion that is inclined forward and is formed at both ends of the front frame and the rear frame. The front chair is supported below the seat through the rising frame and the rear rising frame, and the rear rising frame has a smaller width than the front rising frame, so the front chair is placed between the front rising frames of the rear chair during nesting. The rear rising frame is inserted, so that the front and rear shelves do not interfere with each other during nesting, and the nesting of the chairs can be surely performed without removing or folding the shelves.

(B) According to the invention described in claim 2, the front part and the rear part of the plurality of rectangular wire loop members obtained by bending the wire are connected by the front frame and the rear frame which are also made of the wire, and the shelves are connected. Since it is configured, a lightweight and space-saving shelf can be obtained, and the front rising frame and the rear rising frame can be easily processed by bending both ends of the wire.

(C) According to the invention described in claim 3, the connecting rod for inserting and locking the locking piece of the front rising frame into the locking hole provided in the rear part of the front leg and connecting the front leg and the rear leg. Because the locking piece of the rear rising frame is inserted and locked in the locking hole provided on the inside, it is easy to mount the shelf by manual locking operation without using tools. It can be easily removed at the time of replacement.

  (D) According to the invention described in claim 4, the rising portion bent upward is formed at one end of the wire loop member constituting the receiving portion, and the frame is welded to the bent portion of the rising portion. Therefore, the receiving portion is reinforced by bending, and the strength of welding can be increased.

  (E) According to the invention described in claim 5, since the casters are attached to the front legs and the rear legs that support the seat, and the dimension between the inner surfaces of the rear leg casters is larger than the dimension between the outer surfaces of the front leg casters, Nesting smoothly without interference between casters.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a side view of a shelf chair according to the present invention, and FIG. 2 is a front view of the same.
As shown in the figure, the chair (1) of the present invention has a pair of front legs (3) having a front caster (2) projecting diagonally forward and having a front caster (2) at the lower end and a connecting rod (4) at the upper end. A pair of rear legs (6) connected to (3), projecting obliquely rearward and having a rear caster (5) at the lower end, and fixed to the upper ends of the front leg (3) and rear leg (6) by welding It is provided with a pair of dorsal fins (8) that are pivotally supported by the shaft (7) and stand up from both sides. The armrest (10) is bent in a square shape when viewed from the side, with its upper end fixed to the upper part of the dorsal fin (8) and the lower end supported on the shaft (7). A seat portion (11) is provided inside the armrest (10), and a backrest (12) is provided inside the upper portion of the backrest (8). The backrest (12) and the armrest (10) swing back about the shaft (7) and have a reclining function.
Further, as shown in FIG. 1, the seat portion (11) can be rotated between a substantially horizontal use position and a flip-up position facing upward as shown in FIG.
The rear leg (6) projects outward from the front leg (2), and the dimension between the inner surfaces of the casters (5) of the rear leg (6) is larger than the dimension between the outer surfaces of the casters (2) of the front legs (3). It is enlarged. There is a slight gap G between the inner surface of the front caster (2) and the outer surface of the rear caster (5), and the caster (5) behind the chair located in front passes through the outside of the front caster (2). It can be done. A shelf (13) is provided below the seat (11).

3 is a side view of the shelf, FIG. 4 is a plan view, and FIG. 5 is a front view.
The shelf (13) is composed entirely of wires, and includes a receiving part (14), a front frame (15) provided at the front part of the receiving part (14), and a rear part provided at the rear part. It is composed of a frame (16).

  The receiving part (14) is formed by arranging a plurality of rectangular wire loop members (14a) formed of wires in the longitudinal direction and arranged in the lateral direction. A rising portion (14b) is bent at a substantially right angle at the rear portion of the wire loop member (14a). The front frame (15) facing in the left-right direction is fixed to the lower surface of the front end of the plurality of wire loop members (14a) by welding, and both ends are bent upward at a right angle in front view. In addition, a front rising frame (15a) inclined forward (leftward in FIG. 3) is formed. At the upper end of the front rising frame (15a), a locking piece (15b) is formed that is bent at a substantially right angle in the front lower direction.

  The rear frame (16) is fixed to the inside of the bent portion (14c), which is the base of the rising portion (14b) at the rear end portion of the wire loop member (14a) by welding, and both ends are provided with a front surface. A rear rising frame (16a) is formed that is bent at a right angle when viewed and inclined forward (leftward in FIG. 3). At the upper end of the rear rising frame (16a), a locking piece (16b) that is slightly inclined forward and bent outward is formed.

  As shown in FIGS. 4 and 5, the dimension W2 between the outer surfaces of the rear rising frame (16a) is made smaller than the dimension W1 between the inner surfaces of the front rising frame (15a). Thus, as will be described later, when nesting the chair (1), the left and right rear rising frames (16a) (16a) of the front chair (1) are placed between the left and right front rising frames (15a) (15a). Can pass through.

  As shown in FIGS. 1 and 6, the shelf (13) is attached below the seat (11) of the chair (1) as follows. That is, the locking piece (15b) at the upper end of the front rising frame (15a) of the shelf (13) is inserted into the locking hole (17) provided in the lower rear surface of the front leg (2) and locked, and The locking piece (16b) at the upper end of the rear rising frame (16a) is inserted into the locking hole (18) provided inside the connecting rod (4) and locked. Note that when the locking piece (16b) of the rear rising frame (16a) is locked to the locking hole (18), the upper part of the rear rising frame (16a) is inward of each other using the elasticity of the wire. If it is elastically bent, it can be easily locked.

As shown in FIG. 1 and FIG. 3, in a state where the shelf (13) is attached, the receiving portion (14) is at a predetermined angle (horizontal line (L) (a line parallel to the ground contact surface of the caster)). It is attached to the front lower side so as to have θ).
FIG. 7 shows the backrest (12) with the two chairs (1 (F)) (1 (R)) attached to the shelf (13) in the raised position. (12) It is a side view which shows the state which overlap | superposed each other and nested.

  When nesting the rear chair (1 (R)) on the front chair (1 (F)), first the rear chair between the rear legs (6 (F)) of the front chair (1 (F)) (1 (R)) front leg (3 (F)) enters, and then the front leg (3 (R)) passes outside the rear rising frame (16a (F)) of the front shelf (13 (F)). The front rising frame (15a (R)) passes outside the rear rising frame (16a (F)), and finally, as shown in FIG. 7, the receiving portion (14 ( F)), the receiving part (14 (R)) of the rear shelf (13 (R)) is arranged in parallel at the same angle (θ) with respect to the horizontal line (L). Become.

  As described above, when nesting the chair (1), the front and rear shelves (13 (F)) (13 (R)) do not interfere with each other, and the front shelf (13 (F)) receiving part (14 (F )), The receiving part (14 (R)) of the rear shelf (13 (R)) is arranged in parallel to each other, so that the chair can be nested while the shelf is still attached. .

It is a side view of one embodiment of the present invention. Similarly, it is a front view. Similarly, it is a side view of a shelf. Similarly, it is a top view of a shelf. Similarly, it is a front view of a shelf. Similarly, it is a side view which shows the attachment state of a shelf. Similarly, it is a side view showing a state at the time of nesting of two chairs.

Explanation of symbols

(1) Chair
(2) Casters
(3) Front legs
(4) Linkage
(5) Casters
(6) Rear legs
(7) Axis
(8) Backpack
(10) Armrest
(11) Seat
(12) Backrest
(13) Shelf
(14) Receiving part
(14a) Wire loop member
(14b) Rise
(14c) Bending part
(15) Front frame
(15a) Front rising frame
(15b) Locking piece
(16) Rear frame
(16a) Rear rising frame
(16b) Locking piece
(17) Locking hole
(18) Locking hole

Claims (5)

The shafts that support the seat and the backrest are fixed to the upper ends of a pair of front legs facing diagonally forward and a pair of rear legs facing diagonally rearward, and the pair of rear legs are outward from the pair of front legs. Nesting with the backrest overlapped back and forth with the seat part being pivoted to a nearly horizontal use position and a flip-up position facing upward, with the seat part in the flip-up position. in the possible and the shelf with a chair,
A shelf is attached between the front legs and between the rear legs, and the shelf is fixed to the front part of the receiving part inclined to the front and the receiving part, and the upper end is locked to the front leg at both ends. A front frame on which a front rising frame is formed, fixed to the rear portion of the receiving portion, and an upper end is fixed to both ends of the front frame and a connecting rod connecting the upper ends of the front leg and the rear leg. A rear frame in which a rear rising frame having a width smaller than the frame is formed, and the rear rising frame of the front chair enters between the front rising frames of the rear chair during nesting, and the receiving portions of the front and rear chairs A chair with shelves, characterized in that the parts overlap. The front part in which the receiving part, the front frame, and the rear frame are made of wire, and the receiving part is formed by bending the wires into a rectangular shape, and the front parts and the rear parts of the plurality of wire loop members are directed in the left-right direction. The chair with a shelf according to claim 1, wherein the chair is configured to be connected by a frame and a rear frame, and a front rising frame and a rear rising frame are formed by bending both ends of the front frame and the rear frame, respectively. A locking piece is formed at each of the upper ends of the front rising frame and the rear rising frame of the shelf, the locking piece of the front rising frame is inserted into a locking hole provided at the rear part of the front leg and locked, and the front leg The chair with a shelf according to claim 1 or 2, wherein a locking piece of the rear rising frame is inserted and locked into a locking hole provided inside a connecting rod for connecting the rear leg and the rear leg. The chair with a shelf according to claim 2 or 3, wherein a rising portion bent upward is formed at one end of the wire loop member, and a rear frame is welded to the bent portion of the rising portion. The caster is attached to the front leg and the rear leg, and the dimension between the inner surfaces of the casters of the rear leg is made larger than the dimension between the outer surfaces of the casters of the front leg.

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