JP2872061B2 - Chair - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chair which can be horizontally stacked from the front or the rear along the floor.

[0002]

2. Description of the Related Art According to Japanese Utility Model Publication No. Sho 45-13080, Japanese Utility Model Publication No. Sho 47-36245, Japanese Utility Model Publication No. Hei 3-848, etc., the seat portion is rotated from behind along the floor with the seat being rotated. A chair that can be stacked sequentially from the front is disclosed. On the other hand, the present applicant has disclosed in Japanese Patent Application Laid-Open No. 2-191411.
According to the publication, the front cross-sectional shape is configured to be smaller than the rear cross-sectional shape so that the seat can be sequentially stacked along the floor surface without the need to rotate the seating portion, and the fixed shape Can be pivoted upward from the horizontal position with the front end of the seating part as a fulcrum, or automatically returned to the horizontal position by gravity due to seating from the position rotated upward with the front end of the fixed-shaped seating part as a fulcrum. So that it rotates
Various types of chairs are proposed, such as a chair that is supported by a spring or made flexible so that it can be displaced to a substantially horizontal position by being seated from a position inclined upward rearward in a compressed state where the seat is not seated. did.

[0003]

When the front end of the above-described fixed-shaped seating portion is hinged, the front end portion of the seating portion is formed in a curved shape so that the seating portion can be made flexible when it is overlapped. It is possible to push up the rear end of the front seating portion with a curved surface without having to lift it up in advance with a spring. However, pushing up on a steep curved surface at the front end requires a correspondingly large force. In addition, a stopper protruding laterally from the rear end of the seating portion is supported by the seating support frame, so that the overlapping pitch of the stopper is limited by interference of the stopper with the mating chair at the time of stacking, and the stopper or the seating portion and the seating portion are further limited. There was also room for improvement in terms of finger pinching between the bearing frames.

In view of the above, the present invention can automatically rotate the seating portion with a small force without rotating the seating portion at the time of stacking. An object of the present invention is to provide a horizontally stackable chair that does not have a risk of being pinched.

[0005]

SUMMARY OF THE INVENTION In order to achieve this object, the present invention has two sides extending upward to form a front leg, and further bent obliquely upward as an armrest bent toward a backrest position behind. A pair of first frames and a pair of first frames extend upward to form a rear leg, and are further bent obliquely forward so as to form a side frame with a slight upward gradient for mounting a seating portion. A pair of second frames fixed to the front legs, a third frame fixed to the rear end portions of the side frames on both sides and connecting the second frames, and the second frame is moved rearward. A vertical backrest is provided between the rear ends of the first frame to provide a gap for the seating portion, and the rear end of the seating portion formed corresponding to the side frame Sitting on the back of the department Is mounted on the third frame, and a stopper for supporting the back surface of the seating portion is mounted on the front surface of the side frame, and the thickness of the stopper is set between the side frame and the back surface of the seating portion. A vertical wall that extends upward along the side surface of the seating portion to prevent finger intrusion is formed outside the stopper, and the rear end portion of the seating portion is It is characterized in that the hinge bracket is gradually bent laterally upward from a laterally central portion where the hinge bracket is attached so as to form a gap to be prevented.

[0006]

When stacking horizontally, another chair is placed along the floor from the back of the front chair or from the front of the back chair. In the gap under the backrest of the front chair so that the back surface of the seating portion of the rear chair overlaps the surface of the seating portion of the rear chair. In the following, the frames are sequentially superimposed on each other in substantially contact with each other, and the back surface of the seating portion of the next chair having a thickness on the surface of the foremost non-rotating oblique seating portion is rotated slightly upward by contact. The subsequent seats are likewise stacked slightly pivoted upward.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A chair according to an embodiment of the present invention will be described with reference to FIGS. In FIG. 1, 1 is a chair 9 (FIG. 3)
The armrest 1b extends upward so as to form the front leg 1a of the armrest 1b, and is further bent rearward toward the position of the backrest 10.
It is a pair of pipe-shaped frames on both sides extending diagonally upward. 2 is bent so as to extend upward so as to form the rear leg 2a and to have a rising gradient of about 5 ° forward with respect to the horizontal direction so as to form the side frame 2b on which the seating portion 20 is placed. It is a pair of frames on both sides. 3
Is a pipe-shaped frame connecting the frames 2 on both sides. The front end of the side frame 2b is welded to the upper end of the front leg 1a to fix the frame 2 to the frame 1, and both ends of the frame 3 are welded to the rear end of the side frame 2b. It is conceivable to attach a caster, a glide, or the like to the lower ends of the front leg 1a and the rear leg 2a.

The frame 2 is formed in a C-shape toward the rear so that the chairs 9 can be sequentially superimposed along the floor, so that the distance between the front legs 1a is set wider than the distance between the rear legs 2a on both sides. The seat portion 20 is correspondingly formed narrower rearward. Backrest 10 is bracket 1
3 is screwed from behind, and the insertion portion 13a is fitted to the front end of the frame 1 and attached. Backrest 1
The vertical width of 0 is set so that the seating portions 20 of another plurality of chairs 9 rotated upward by about 15 ° are overlapped in the horizontal direction and form a gap S1 that can enter with a margin below. Is set.

Reference numeral 21 denotes a hinge bracket for rotatably supporting the seat portion 20 on the frame 3. This hinge bracket can be retrofitted to the frame 3 from below,
With the frame 3 held by the bearing groove 21a opened upward, the flange portions 2 on both sides formed at the upper end thereof.
At 1b, the seating portion 20 is screwed to the rear surface of the rear end portion. Further, a pin 2 screwed into the frame 3 is provided in the bearing groove 21a.
The guide groove 21c (FIG. 2)
A) is formed, and the seating portion 2 is formed at the rear end of the guide groove.
In addition to restricting the degree of opening upward from zero, the lateral displacement is also restricted.

Reference numeral 22 denotes a seating portion 2 for preventing finger pinching.
0 is a stopper screwed to the surface of the front portion of the side frame 2b so as to place the "0" on the side frame 2b with a gap S2. This stopper has a semi-cylindrical engaging groove 22a corresponding to the pipe-shaped side frame 2b formed on the bottom surface, and is formed in a block shape slightly thicker than a standard finger. A vertical wall 22b that extends upward along the side surface and that prevents the entry of a finger is formed. Correspondingly, both rear ends of the seating portion 20 are
The hinge bracket 21 is bent upward from the center in the horizontal direction to the side so as to form a gap S2 for preventing finger pinching, and its curvature gradually increases toward the rear. (See FIG. 2B).

FIG. 3 shows the chair 9 in which such components are assembled. A gap S2 is formed between the side frame 2b and the back surface of the seating portion 20 so as not to pinch a finger. Is protected by a vertical wall 22b so that a finger does not enter from the side. The surface of the seat 20 is inclined upward at an angle of about 5 °, and is particularly adapted for a conference or a venue.

In the case of stacking forward along the floor surface, as shown in FIG. 4, the chair 9 is moved forward, and the seating portion 20 is made to enter the gap S1 of the backrest 10 of the adjacent chair forward, and the frame 2 is moved. Is narrowed rearward, so that the rear frames 1 and 2 penetrate the outside of the front frame 2, and the front surface of the rear seating portion 20 abuts on the front surface of the front seating portion 20 and is overlapped. In the process of moving further forward, the frames 1 and 2 are superimposed on each other without interfering with the lateral width of the stopper 22 and are substantially in contact with each other.
, The backrest 10 is horizontally overlapped with a slight gap. The next chair 9 is moved forward, the frames 1 and 2 are further stacked outward, and the seating portion 20 contacts the already inclined seating portion 20 of the front chair 9 and is similarly stacked at about 15 °. Similarly, the front chair 9
A plurality of seating portions 20 are superimposed on the gap S1 of each other, and are further superimposed on each chair 9 in order.

[0013] Similarly, it is also possible to move backward and overlap, but in this case, the seating portion 20 of the chair 9 is sunk into the back of the seating portion 20 of the chair 9 behind. The sitting comfort is also improved by the upward bending of the rear end of the seating portion 20. The overlapping pitch is defined by the plane angle of the side frame 2b and the pipe diameter.

In the embodiment described above, the seat 20
Instead of gradually bending the rear end portion upward and laterally to prevent finger pinching, as shown in FIG. 5, the entire seating portion is formed substantially flat, and the hinge bracket 27 is provided with a guide groove 27d. Of the frame 3 of the frame 3, a screwing surface 27b to the back surface of the seating portion, and a spacer portion 27c having a thickness for forming a clearance for preventing finger pinching therebetween. It is also possible. As a result, the entire area of the seating portion rises from the side frame 2b, and the finger is similarly prevented from being pinched.

[0015]

According to the first aspect of the present invention, it is assembled inexpensively and rigidly with a small number of parts, and can be rotated by a small angle with a small force without the need to rotate the seating portion during stacking. Can be overlapped in the horizontal direction in order. The rear end of the seating portion is bent upward, a gap is formed between the rear surface of the seating portion and the frame at a position below the seating portion by a stopper, and a vertical wall is formed outside the stopper. The risk of pinching of the finger can be avoided even if is configured as a rotary type. According to the second aspect of the present invention, it is possible to prevent finger pinching during rotation of the seating portion without bending the rear end of the seating portion upward.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a chair according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a hinge portion of a seat portion, and FIG. 2B is a sectional view taken along line AA of FIG.

FIG. 3 is a perspective view showing an assembled state of the chair.

FIG. 4 is a perspective view showing a horizontal overlapping state of the chair.

FIG. 5 is a perspective view showing a hinge bracket of a seat according to another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 First frame 1a Front leg 1b Armrest 2 Second frame 2a Rear leg 2b Side frame 3 Third frame 10 Backrest 20 Seating part 21, 27 Hinge bracket 22 Stopper 22b Vertical wall of stopper

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) A47C 3/04 A47C 5/04 A47C 4/04 A47C 7/56

Claims (2)

(57) [Claims] 1. A pair of first frames extending upward to form a front leg, further bent toward a backrest position behind and extending diagonally upward as an armrest, and an upper portion to form a rear leg. And a pair of second frames on both sides which are bent obliquely forward and fixed to the front legs so as to constitute a side frame having a slight upward slope for mounting the seating portion. A third frame fixed to a rear end portion of the side frame and connecting the second frames to each other, wherein the second frame is formed to have a narrow width toward the rear; Attach a vertical backrest that places a gap to the seating portion between the rear end portions of the frame, and attach the seating portion to the rear end rear surface of the seating portion formed corresponding to the shape of the side frame. The third A hinge bracket rotatably supported on the side frame, a stopper for supporting the back surface of the seat portion is mounted on the front surface of the side frame, and the thickness of the stopper is set between the side frame and the back surface of the seat portion. It is set to the extent that a gap for preventing pinching can be formed, and a vertical wall is formed outside the stopper to extend upward along the side surface of the seating portion to prevent finger intrusion, and the seating portion rear end portion is So as to form a gap for preventing finger pinching, the hinge bracket is gradually bent laterally upward from a laterally central portion to which the hinge bracket is attached.
A chair characterized by that: 2. Instead of the rear ends of the seat being bent gradually upward from the lateral center where the hinge bracket is mounted, the rear end of the seat can be bent from the surface of the third frame of the hinge bracket. 2. The chair according to claim 1, wherein the thickness of the chair is set so as to form a gap for preventing finger pinching between both sides of the rear end portion and between the side frames.