JPH10127402A - Movable armrest of connected chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure sufficient spaces in front of and behind a chair in its folded position by employing a retraction mechanism section that causes at least fore- end portions of armrests to retract to a position of the bottom of a seat section in its upright attitude or farther backward along with movement for bringing the seat section to the upright attitude. SOLUTION: A seat section 2 of a combination chair is pivoted with seat turning shafts 11 on support posts 3 and may be brought to upright or level position as it is turned about the shafts 11. Each of seat section support fittings attached to both sides of the seat section 2 is provided with a turning pin 9 projecting from the fitting for press-stopping a turning arm 5 for bringing an armrest end 4 to upright or level position along with movement of the seat section 2 to upright or level position so that the top surface of the armrest end 4 is flush with the armrest surface of the support post 3 when the seat section 2 is lowered. The arm 5 is urged upward with a spring 7. When the seat section 2 is swung up from that position, the pin 9 moves downward to turn the arm 5 in the direction of swinging up the armrest end 4, thus securing sufficient spaces in front of and behind the chair in its folded state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable armrest device provided on a connecting chair installed in a stadium, a theater or the like.

[0002]

2. Description of the Related Art When newly constructing a stadium or a theater, a folding chair is used to fold a seat in which a seat can be folded in order to increase the number of seats while ensuring a sufficient space between front and rear seats. Chairs in which the depth direction of the chair is reduced.

[0003] In such a connected chair, not only the seat but also the armrest, as the seat is folded,
The space before and after the chair must be sufficient.

[0004]

However, in the conventional connecting chair, in order to secure a space between the front and the back, the distal end of the armrest should not protrude forward from the bottom of the seat when the seat is folded. In addition, it was necessary to shorten the length of the armrest. For this reason, there has been a problem that a sufficient length for a seated person to put his / her arm on during use cannot be obtained, which causes discomfort.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has a sufficient space between the front and the back of the chair when folded, and a sufficient length for the occupant to put his / her arm in use. It is an object of the present invention to provide a movable armrest device provided on a connecting chair, which does not cause discomfort to a seated person.

A movable armrest device according to the present invention comprises: a seat;
A coupled chair comprising a backrest portion and a column supporting both of them with respect to the floor surface, wherein the seat portion is configured by connecting at least two of the chairs which are mounted on the column so as to be able to be raised and lowered in parallel. Armrests are arranged between the seats and outside the outermost seat, and at least a tip portion of each armrest is provided with the other armrests of both seats when the armrest is located between the seats. Is characterized in that a retreat mechanism is provided for retreating to a position on the bottom surface of the seat in the upright posture or a position behind the same in accordance with the upright operation of the related one seat.

In the movable armrest device according to the present invention,
The mechanism section may be a rotation movement mechanism or a translation movement mechanism.

In the movable armrest device according to the present invention, a mechanism may be provided for moving at least the distal end portion of each armrest to the operating position of the armrest as the seat portion falls down.

Further, in the movable armrest device according to the present invention, the backward displacement mechanism and the advance displacement mechanism may include a common member.

In a preferred embodiment of the movable armrest device according to the present invention, an intermediate portion of a swing arm having at least one end portion of the armrest attached to one end thereof is pivotally supported on the column, and the one end of the swing arm is provided. A spring means for urging the side in the retreating direction, contacting the other end of the swing arm urged by the spring means, and as the seat moves up and down, the one end of the swing arm is set to the retracted position. By forming a pivot pin for swinging between the advanced position on the seat portion,
It is characterized in that a common mechanism is configured.

In another embodiment of the movable armrest device according to the present invention, a tip portion is provided for performing translational movement in an advancing / retreating direction with respect to a main body portion of the armrest provided on the column, and the tip portion is moved in a retreating direction. Is provided on the seat portion, and a rotation pin is provided on the seat portion so as to rotate in accordance with the up-and-down operation, and a stopper which is displaced up and down by the rotation motion of the rotation pin is provided at a position below the distal end portion. The stopper is provided, and the stopper is constituted by rigid members located at both upper and lower ends and a spring member located therebetween, and is housed in a sliding guide.

[0012]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

FIGS. 1 to 5 show a first embodiment of a chair provided with a movable armrest device according to the present invention. FIG.
As shown in FIG. 1, the present connecting chair comprises a backrest 1, a seat 2, a supporting column 3 for attaching them, an armrest tip 4, a rotating arm 5 integrally connected thereto, and a supporting arm 3. Arm pivot shaft 6 for rotatably supporting the armrest, and a spring 7 for allowing the armrest tip 4 to be raised and lowered.
The seat 2 is pivotally supported on the support column 3 by a seat rotating shaft 11,
By rotating around the seat part rotating shaft 11, it can be raised and lowered. It should be noted that the seat pivots by means of a spring or the like (not shown) so that the seat jumps up when the occupant leaves. Further, a seat support bracket 8 is attached to both sides of the seat 2 with fixing bolts 10, and the pivot arm 5 is mounted on the seat support bracket 8 so as to raise and lower the armrest tip 4 together with the up and down of the seat 2. A pivot pin 9 for pressing the protruding portion is provided (see FIG. 2). As shown in FIG. 1, the upper surface of the armrest tip 4 is flush with the armrest surface 3 b of the column 3 when the seat 2 is lowered. Although FIG. 1 shows a state in which two chairs are arranged, in a preferred embodiment of the present invention, one chair may be used, or at least two chairs may be arranged.

FIG. 2 is a view showing the armrest portion of the chair shown in FIG. 1 and its advance and retreat mechanism. In this example, the rotating arms 5 are arranged so as to sandwich the support 3 (not shown).
An arm turning shaft 6 is provided at a portion slightly below the bent portion so as to be capable of turning the arm 5 through an opening provided in the column 3. The upper end of the rotating arm 5 is connected so as to be integrated with the armrest tip 4. Further, one end of the spring 7 is attached to a spring attachment portion 5a provided between a portion of the rotating arm 5 connected to the armrest tip 4 and the bent portion. Note that the other end of the spring 7 is attached to the spring attachment portion 3a of the column 3 (see FIG. 1).

The lower portion of the rotating arm 5 (the portion below the rotating shaft 6) is always in contact with a rotating pin 9 projecting from the seat support 8. Hereinafter, the operation of the armrest tip in this example will be described. First, as shown in FIG. 3, when the seat portion 2 is down, that is, when there is a seated person, the rotating arm 5 is rotated about the rotating shaft 6 by the spring 7 and the armrest tip 4 is moved rearward. That is, while trying to raise in the direction of the backrest 1, the pivot pin 9 abuts on the lower part of the pivot arm 5 to suppress this. Here, when the seat portion 2 is flipped up, the seat portion 2 rotates rearward about the seat portion rotating shaft 11. At this time, the rotation pin 9
Moves downward, and the rotating arm 5 is rotated by the spring 7 in a direction in which the armrest tip 4 is flipped backward. However, since one of the lower portions of the rotating arm 5 is in contact with the rotating pin 9, the rotating arm 5 is suppressed from rotating too much (see FIG. 4).

As described above, in the present embodiment, when the seat portion of the chair is flipped up, the armrest tip portion 4 is flipped back in conjunction with this. However, it is not preferable that the armrest tip 4 jumps up when there is no other occupant in one or both chairs of the occupant or when another occupant stands. For this reason, in this example, two pivot arms 5 are provided for one armrest tip 4, and the two seats 2 are adjacent to each other.
Are abutted against the rotating pins 9 facing each other. In other words, when at least one of the seats of the two adjacent chairs is down, the armrest tip 4 on both sides of the seat is rotated forward so that the armrest tip 4 is always in an advanced state. The pin 9 holds down the rotating arm 5. At this time, regardless of the state of the seat, the pivot pin 9 on the side of the adjacent seat may be in contact with the arm 5 even if it is in contact with the arm 5.
(See FIGS. 2 to 4).

Although the spring 7 attached to the arm 5 is attached to only one arm in the illustrated example, it may be provided to each of the two arms as needed. Also,
In the example shown in the figure, the arm 5 is also shown for the chair in the middle where the chairs are also provided on both sides. Therefore, two arms are used. It may be a single arm bifurcated so as to abut on the pivot pin 9, and furthermore, a chair at the left and right ends, that is, one side is adjacent to the other chair, and the other side is a passage or wall. In the chair facing the like, only one arm 5 of the armrest tip 4 may be provided.

FIGS. 5 to 7 show a second embodiment of a chair provided with a movable armrest device according to the present invention. As shown in the figure, in the present connection chair, the armrest device comprises a armrest tip 12, and a rotation plate comprising a linear flat plate connected to the armrest tip 12 by an armrest tip rotation shaft 13 in order to make the armrest tip 12 movable. The moving arm 14 includes an arm rotating shaft 15 that rotatably attaches the arm 14 to the column 3. Further, a turning arm stopper 16 is protruded from the side surface of the column 3. The stopper 16 comes into contact with the rotating arm 14 when the seat is folded, so that the armrest tip 12 does not retreat too much (see FIG. 7). Although FIG. 5 shows a state in which two chairs are arranged, as in the case of the above-described first embodiment, one or at least two or more chairs may be arranged.

FIG. 6 is a view showing the armrest portion of the chair shown in FIG. 5 and its advance and retreat mechanism. In this example, the rotating arms 14 are arranged so as to sandwich the support 3 (not shown).
An arm rotation shaft 15 is provided at the center of the plate, which is formed by a straight plate, and allows the arm 14 to rotate through an opening provided in the column 3. Further, at the upper end of the arm 14, the armrest tip 12 is rotatably connected to the armrest tip 12 by an armrest tip rotation shaft 13. Further, one end of the spring 7 is mounted on a spring mounting portion 14a provided between the mounting position of the armrest tip rotating shaft 13 and the mounting position of the arm rotating shaft 15. The other end of the spring 7 is attached to a spring attachment portion 3a of the support 3 (not shown). The rear end of the armrest tip 12 is open, and the armrest tip 12 is rotatable by the armrest tip rotation shaft 13. Therefore, the front end of the armrest 3b of the column 3 passes through the opening and the tip 12 The armrest tip 12 slides back and forth on the armrest 3b as a result.

As in the case of the first embodiment, the lower portion of the arm 14 (the portion below the arm rotation shaft 15) is
It is provided so as to always contact the pivot pin 9 provided on the seat support bracket 8. Also in this example, as in the case of the first embodiment, when the seat 2 is raised and lowered, the pivot pin 9 provided on the seat support metal fitting 8 causes the armrest tip 12 to retreat too far. The armrest tip 12 is advanced and retracted while suppressing the rotation of the rotating arm 14 so as not to cause the rotation (see FIG. 7).

As described above, in this embodiment, when the seat portion of the chair is flipped up, the armrest tip portion 12 is retracted to the rear, that is, the backrest side, in conjunction with this.
Also in this example, as in the case of the above-described first embodiment, even if there is no other occupant on either side of one of the chairs where there is a occupant or on one chair, there is a occupant, that is, on the side of the descending side Since the rotation pin 9 of the seat portion 2 suppresses the rotation of the arm 14, the armrest tip portions 12 on both sides of the occupant do not retreat.

As in the first embodiment, the spring 7 attached to the rotating arm 14 is attached to only one arm in the illustrated example, but may be attached to each of the two arms as necessary. At least one spring 7 may be attached to the armrest tip 4 side. In addition, the arm 14 also shows the chair in the middle where the chairs are also provided on both sides in the illustrated example,
Although the number of arms is two, the arm 14 may be, for example, a single arm that is bifurcated so that the lower portion abuts on the adjacent rotating pins 9 on both sides. In a chair where one side is adjacent to another chair and the other side faces a passage, wall, etc., only one arm 14 of the armrest tip 4 may be provided.

FIGS. 8 to 10 are views showing a third embodiment of a chair provided with a movable armrest device according to the present invention. As shown in the figure, in this example, the armrest device is
And the lower part is a bifurcated pivot arm 18 integrated therewith.
And an arm rotation shaft 19 for rotatably supporting the arm 18 through an opening provided in the column 3. Further, a turning arm stopper 20 is protruded from the side surface of the column 3. The stopper 20 comes into contact with the rotating arm 18 when the seat is folded, so that the armrest 17 does not retreat too much (see FIG. 10).

FIG. 9 is a view showing the armrest portion of the chair shown in FIG. 8 and its advance and retreat mechanism. In the present example, the rotating arm 18 has a plate-like part whose upper part is integrated with the armrest part 17 and a bifurcated part whose lower part is provided so as to straddle the column 3, and a connection (branch) part between the two. An arm rotation shaft 19 is provided directly below the arm 3, and the rotation arm 18 is rotatably supported by the column 3.
One end of the spring 7 is attached to the spring attachment portion 18a of the rotating arm 18. Note that the other end of the spring 7 is attached to the spring attachment portion 3a of the column 3 (see FIG. 8).

As in the first and second embodiments, the lower portion of the rotating arm 18 (the portion below the arm rotating shaft 19) is always provided on the seat support bracket 8. Pin 9
It is provided so that it may contact. Also in this example, as in the case of each of the above-described embodiments, when the seat 2 is raised and lowered, the pivot pin 9 provided on the seat support bracket 8 is moved by the armrest.
While suppressing the rotation of the arm 18 so that 17 does not retreat too much,
The armrest 17 is raised and lowered (see FIG. 10).

As described above, in the present embodiment, when the seat portion of the chair is flipped up, the armrest portion 17 is flipped back in conjunction with this. Also in this example, as in the case of the first and second embodiments described above, even if there is no occupant on either side of one of the chairs where there is a occupant or on one of the chairs, there is a occupant, that is, the down side The rotation pin 9 of the seat 2 prevents the arm 18 from rotating, so that the armrests 17 on both sides of the occupant do not jump back.

FIGS. 11 to 13 show a fourth embodiment of a chair provided with a movable armrest device according to the present invention. As shown in the figure, in this example, the armrest device, an armrest cover 21 formed integrally with the column, an armrest tip portion 22, and an integral swing arm 23 and the cover 21 penetrate the cover 21. And an arm swinging shaft 24 for rotatably supporting the arm 23. Further, a swing arm stopper 25 is provided inside the armrest cover 21. This stopper 25
Abuts against the swing arm 23 when the seat is folded, so that the armrest tip 22 does not retreat too far (FIG. 13).
reference).

FIG. 12 is a diagram showing the armrest tip of the chair shown in FIG. 11 and its advance and retreat mechanism. In this example, as in the case of the above-described third embodiment, the swing arm 23 has a single plate-shaped part whose upper part is integrated with the armrest tip part 22 and a lower part composed of a forked part, An arm swing shaft 24 is provided immediately below the connection (branch) between the two, and the swing arm 23 is rotatably supported by the support 3. Further, one end of the spring 7 is mounted on the spring mounting portion 23a of the swing arm 23. In addition,
The other end of the spring 7 is connected to an armrest cover 21 (not shown).
It is attached to a spring attachment portion 21a provided on the inner surface.

In this embodiment, the armrest cover 21 has an opening 21a at the front, and the armrest tip 22 projects or retracts through the opening 21a in accordance with the undulating movement of the seat 2. I have. That is, when the seat portion 2 is tilted down for seating, the swing arm 23 swings against the spring 7 with the rotation of the rotation pin 9 attached thereto, and the armrest tip portion 22 opens the opening portion 21a. Jump out of When the seat 2 is flipped up to leave the seat, the swing arm 23 swings in the direction opposite to the direction in which the seat 2 was tilted, and the armrest tip 22 is drawn into the armrest cover 21.

The oscillating arm 23 has a lower portion (a portion below the arm oscillating shaft 24) as in the above embodiments.
Are provided so as to always contact the pivot pin 9 provided on the seat support bracket 8. Also in this example, as in the case of each of the above-described embodiments, when the seat 2 is raised and lowered, the pivot pin 9 provided on the seat support bracket 8 prevents the armrest tip 22 from retreating too much. Thus, the armrest tip portion 22 is moved forward and backward while suppressing the swing of the arm 23 (see FIG. 13).

As described above, in the present embodiment, when the seat portion of the chair is raised and lowered, the armrest tip portion 22 jumps out of the interior of the armrest cover 21 or is pulled into the interior in conjunction with this. Also in this example, as in each of the above-described embodiments, even if there is no occupant on either side of one of the chairs where there is a occupant or on one of the chairs, there is a occupant, that is, the seat portion 2 on the down side. Since the rotation pin 9 suppresses the rotation of the arm 23, the armrest tip portions 22 on both sides of the occupant are not drawn into the cover.

FIGS. 14 to 18 are views showing a fifth embodiment of a chair provided with a movable armrest device according to the present invention. As shown in FIG. 14, in this example, the armrest device is
And the armrest tip which translates on the armrest surface 3b of the support 3
26, a pivot pin 9 provided on a side portion of the seat portion 2 for integrally rotating with the undulation of the seat portion 2, and an armrest attached to the column 3 so as to be located below the armrest tip portion 26. The stopper assembly 27 is provided. As shown in FIG. 15, the armrest stopper assembly 27 has two through holes 28 and 29 therein, and inside the armrest stopper pin 30,
31, rotating pin receivers 32, 33 and springs provided between them
Accommodates 34, 35. Further, a projection 36 is provided below the armrest surface 3b of the column 3. The projection 36 is provided at an armrest tip 26 to be described later.
Abuts against the inside of the rear surface 26b, and regulates the movement of the armrest tip portion 26 so as not to advance too much.

FIGS. 16 and 17 show the armrest portion 26 of the chair shown in FIG. 14 and its advance and retreat mechanism, as viewed from obliquely forward and obliquely rearward, respectively. The armrest tip 26 has an opening in the rear surface 26b, and the tip of the armrest 3b of the column 3 is inserted into the opening. Further, both ends of the spring 7 are mounted between the spring mounting portion 26a of the armrest tip portion 26 and the spring mounting portion 3a of the column 3, respectively. Thereby, the armrest tip 26 moves on the armrest surface 3b while sliding back and forth.

FIG. 18 shows the advance and retreat of the armrest tip 26 in this embodiment, and the action of the armrest stopper assembly 27 at that time. Hereinafter, this will be described.
First, in a state where the seat portion 2 is flipped up, the stopper pin 30 of the armrest stopper assembly 27 does not contact the armrest tip portion 26, and the pivot pin receiver 32 also contacts the pivot pin 9. Are not in contact (see FIG. 18 (a)). next,
When the seat 2 is tilted, the rotation pin 9 is rotated with the rotation of the seat 2.
Is rotated and comes into contact with the rotating pin receiver 32, and the pin receiver 32 is pushed upward by the rotating pin 9. As a result, the stopper pin 30 contacts the lower part of the armrest tip 26 (FIG. 18).
(b)). Further, when the armrest tip portion 26 is manually pulled out forward, the stopper pin 30 does not come into contact with the tip portion 26, and jumps upward due to the elastic force of the spring 34 which is being pushed up by the pivot pin and the pin receiver 32. . The pin 30 contacts the rear surface 26b of the armrest tip 26, preventing the armrest tip 26 from being pulled back by the spring 7 attached thereto (see FIG. 18 (c)). Finally, when the seat portion 2 is flipped up for leaving the seat, the rotating pin 9 rotates and separates from the pin receiver 32. Therefore, the pin receiver 32 descends,
At the same time, the stopper pin 30 moves down. As a result, when the stopper pin 30 moves away from the armrest tip 26, the tip 26 retreats (see FIG. 18D).

[0035]

The movable armrest device according to the present invention is designed so that a sufficient length can be secured when seated, and that the front and rear spaces of the chair can be sufficiently secured when the seat is folded. Or the entire armrest is advanced and retracted, or advanced and retracted. Therefore, there is an effect that a sufficient distance between the front and the back of the chair can be secured at the time of folding, and that the occupant does not feel uncomfortable when used.

[Brief description of the drawings]

FIG. 1 is a perspective view of a connecting chair according to a first embodiment of the present invention.

FIG. 2 is a perspective view of an armrest of the chair shown in FIG. 1;

FIG. 3 is a side view of the chair shown in FIG. 1;

FIG. 4 is a front view of the chair shown in FIG. 1;

FIG. 5 is a perspective view of a connection chair according to a second embodiment of the present invention.

6 is a perspective view of an armrest of the chair shown in FIG. 5;

FIG. 7 is a side view of the chair shown in FIG. 5;

FIG. 8 is a perspective view of a chair according to a third embodiment of the present invention.

FIG. 9 is a perspective view of an armrest of the chair shown in FIG. 8;

FIG. 10 is a side view of the chair shown in FIG. 8;

FIG. 11 is a perspective view of a chair according to a fourth embodiment of the present invention.

FIG. 12 is a perspective view of an armrest of the chair shown in FIG. 11;

FIG. 13 is a side view of the chair shown in FIG. 11;

FIG. 14 is a perspective view of a chair according to a fifth embodiment of the present invention.

FIG. 15 is a cross-sectional view of the armrest stopper assembly of the chair shown in FIG. 14;

FIG. 16 is a perspective view of the armrest of the chair shown in FIG. 14 as viewed obliquely from the front.

FIG. 17 is a perspective view of the armrest of the chair shown in FIG. 14 as viewed obliquely from behind.

FIG. 18 is a view showing a mechanism for advancing and retracting an armrest of the chair shown in FIG. 14;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Chair backrest part 2 Chair seat part 3 Support pillar 4,12,22,26 Armrest tip part 5,14,18 Rotation arm 6,15,19 Arm rotation axis 7 Spring 8 Seat support bracket 9 Rotation pin 10 Seat support bracket fixing bolt 11 Seat rotation shaft 13 Armrest tip rotation shaft 16, 20 Rotation arm stopper 17 Armrest 21 Armrest cover 23 Swing arm 24 Arm swing shaft 25 Swing arm stopper 27 Armrest stopper Assemblies 28, 29 Through holes of armrest stopper assembly 30, 31 Armrest tip stopper pin 32, 33 Rotating pin receiver 34, 35 Spring 36 Projection

Claims (7)

[Claims] 1. A chair comprising a seat portion, a backrest portion, and a support column for supporting both of them on a floor surface, and at least two of a chair having the seat portion mounted on the support column so as to be able to undulate. The armchair is arranged between the seats and outside the outermost seat, and at least a tip portion of each armrest is attached to the armrest located between the seats. For the other armrests of both seats, a retreat mechanism is provided for retreating to the bottom position of the seat in the upright posture or to a position rearward with the upright operation of the related one seat. A movable armrest device for connecting chairs. 2. The movable armrest device for a linked chair according to claim 1, wherein said retreating mechanism is a rotating mechanism or a translation mechanism. 3. The movable armrest device for a connected chair according to claim 1, further comprising an extension mechanism for causing at least a tip portion of each armrest to advance and displace to an operation position of the armrest as the seat portion falls down. 4. The movable armrest device for a connected chair according to claim 1, wherein the retreat mechanism and the advancement mechanism are used as a common mechanism. 5. A stopper for using the retreating mechanism as a translation mechanism and for restraining a distal end portion of an armrest, which is advanced and displaced to an operating position by manual operation, to an operating position by a push-up operation associated with a seating operation. Is provided,
The movable armrest device of the connecting chair according to claim 1. 6. A spring means is provided for pivotally supporting an intermediate portion of a swing arm having at least one end portion of an armrest attached to one end thereof to the column, and for urging the one end side of the swing arm in a retreating direction. Contact the other end of the swing arm urged by the spring means, and as the seat moves up and down,
The connecting chair according to claim 4, wherein a common mechanism is configured by forming a pivot pin on the seat for swinging the one end of the swing arm between a retracted position and an advanced position. Movable armrest device. 7. A front end portion for performing a translational movement in an advancing and retreating direction with respect to a main body portion of an armrest provided on the column, and a spring means for urging the front end portion in a retreating direction is provided. A pivot pin that is pivotally moved along with the up / down operation is provided, and a stopper that is displaced up and down by the pivotal movement of the pivot pin is disposed at a position below the distal end portion,
6. The movable armrest device for a connection chair according to claim 5, wherein the stopper is constituted by rigid members located at both upper and lower ends and a spring member located therebetween, and is housed in a sliding guide.