JPH0537789Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a flip-up connected chair equipped with an armrest suitable for spectator seats in baseball stadiums, stadiums, etc. More specifically, as the seat lifts up, the backrest folds into a tangential shape, reducing the front and rear thickness, and at the same time, the armrest folds down in conjunction with the movement of the seat, increasing the width of the entire chair from front to back. This relates to a connected chair that can be narrowed.

[Prior Art and Problems] When the seat is lifted up, the backrest comes into contact with the upper surface of the seat, flattening both of them.
An articulated chair in which the armrests attached to the top of the support pillars supporting the backrest can be raised vertically and folded down in conjunction with the lifting of the seat, while when the seat is tilted horizontally, the armrests can be tilted horizontally in conjunction with the lifting of the backrest, as shown in, for example, Japanese Utility Model Publication No. 56-44424.
This is known in, for example, Japanese Utility Model Application Publication No. 61-196650.

In this known connected chair, the backrest is linked to the lifting of the seat, and when not in use, the armrests at the top of the support are pushed up and raised via a lever and a connecting rod. Attach it to the side of the backrest,
In addition, when in use, the backrest is pushed up and tilted backwards as the seat falls horizontally, and the armrests are folded down horizontally via the push-up lever and connecting rod so that the seat can be seated.

As is clear from the above, the feature of this connected chair is that the armrests move in conjunction with the rotation of the seat, stand up when not in use, and support horizontally when in use. Even if the user manipulates the shift of the seats located on the left and right sides across the support column, the armrest changes its posture horizontally in conjunction with this on the side where the seat is overturned for use. However, on the other hand, in order to link the armrests with the seat, it is necessary to interpose a push-up lever or a connecting rod, which complicates the structure and increases the number of parts of the device. There are problems such as the interlocking means being exposed and spoiling the appearance, and furthermore, the operation of the interlocking means poses a risk of pinching hands or clothing.

[Purpose of the invention] The present invention was devised to improve the above-mentioned problems with the conventional articulated chair with armrests. To propose a connected chair with armrests that eliminates interlocking means such as push-up levers and thereby avoids problems in appearance and at the same time prevents dangers such as getting caught.

[Means for solving the problem] That is, the present invention is an improvement on the conventional defects based on the above-mentioned purpose, and its feature is that the height of the pillars, which are erected at required intervals, is The support frame of the seat is rotatably supported on the shaft, and the middle of the height of the mounting frame fixed to the side of the backrest is pivotally connected to the rear end of this support frame, and the lower end of the mounting frame is connected to the support frame. The support frame is slidably fitted to an arc-shaped guiding means having a length in the vertical direction provided on the side surface of the support frame to hold the support frame in an upright position, and raised when the support frame falls to a horizontal position in accordance with the rotational movement of the support frame. Have them adopt a backward leaning posture,
In addition, when the column is jumped up to a standing position, it is lowered to take a vertical position, and at the upper end of the column, an armrest whose rear portion is biased to lower is pivotably supported, and an engagement portion provided at the rear end thereof. To provide a connected chair, which faces on the trajectory of a connecting part provided at the upper end of the mounting frame of the backrest, stands up by its own weight when the mounting frame is lowered, and converts to a horizontal position when it rises. There is a particular thing.

[Function] When the connected chair according to the present invention is lifted up from the usable state where the seat is horizontally supported as in the above-mentioned configuration to the upright position, the mounting frame of the backrest connected to the rear end of the support frame of the seat opens. It descends using the arc-shaped guide means and is folded into a tangential plane along the column along with the raised seat. Then, when the seat is tilted horizontally for use from this state, the mounting frame of the backrest is pushed up via the support frame and is guided by the arc-shaped guiding means to rise while adopting a backward tilted posture. As this rises, the engaging part facing the trajectory of the connecting part at the upper end of the mounting frame is pushed up by the connecting part, so the arm rest provided at the upper end of the column rotates and is converted to a horizontal position for use. becomes possible.

The armrest, which is pushed up and rotated to a horizontal position by the rise of the connecting part provided on the mounting frame of this backrest, must have the same relationship with the mounting frames of each chair provided on the left and right sides of the support. When one of the chairs is folded horizontally for use, the backrest rises in conjunction with this, changing its posture horizontally and making it ready for use, and when both chairs are folded, it returns to its original position. He returned to his standing position and rested on the support.

The rear end of the arm rest may be set so that it always descends due to its own weight, but a spring means may be further provided in the pivot portion of the support column to urge the rear end to descend.

Next, the features of the present invention will be explained in detail and clarified according to the illustrations.

[Example] Figure 1 is a side view of the seat in a seatable state, Figure 2 is a side view of the seat with the seat flipped up and folded, and Figure 3 is a front view of the seat in a seatable state. be. FIG. 4 is a front view of a plurality of chairs connected together, and FIG. 5 is an explanatory diagram showing each part disassembled.

In the drawing, 1 is a support that is fixed to the floor and erected at predetermined intervals, 2 is a seat that is placed between the supports, 3 is a backrest, 4 is a support frame for attaching the seat 2 to the support 1, 5 is a mounting frame for mounting the backrest 3 to a support post.

The support column 1 has a shaft bearing part 6 in the middle of its height, and supports the support frame 4 from the left and right sides freely through a shaft 7 passing through the shaft bearing part 6.

The support frame 4 is made by bending a metal plate into an L-shaped cross section.A shaft hole 8 for passing the shaft 7 is provided at approximately the center of the length of one standing piece, and a shaft hole 8 is provided on the outer surface so as to surround this shaft hole. is integrally provided with a cup 9 that covers the shaft bearing part 6. The rear end of this upright piece is provided with a pivoting piece 10 that projects upward so that a mounting frame 5, which will be described later, can be connected thereto. Incidentally, screw holes 11 for fixing the seat 3 are provided at both front and rear ends of the other horizontal piece.

Like the support frame, the mounting frame 5 is made of a metal plate bent into an L-shaped cross section, and a projecting piece 12 is provided midway along the height of one piece to connect with the pivot piece 10 of the support frame 4. . And through holes 13, 1 provided in both pieces
By passing a pin 15 through 4, both frames can be connected freely.

The lower end of the mounting frame 5 is provided with a protrusion 17 that slides onto the guide means 16 provided on the side surface of the support column 1, and the upper end is provided with a connecting portion 19 that connects with an elbow rest 18, which will be described later.

In this embodiment, the guide means 16 is formed into a groove by cutting the side surface of the support column 1 in an arc shape in the longitudinal direction, and the protrusion 17 is slidably fitted into this groove.

The guide means 16 formed in this arcuate groove holds the mounting frame 5 in an upright position at all times, guides it up and down while maintaining the upright position when the support frame 4 rotates, and guides the mounting frame 5 up and down when it is lowered. It is a means for controlling the posture of the frame 5 so that it is in a vertical posture and in a backward tilted posture when raised, and is formed on both surfaces to which the mounting frame is attached.

The elbow rest 18 has a groove-shaped lower surface cut from the approximate center toward the rear end, and is provided with a hollow part 20 for receiving the upper end of the pillar. A pin 21, which is inserted through the upper end and passed from the side surface, is passed through a through hole 22 of the pillar, so that it can be freely rotated. A hook-shaped engaging portion 23 is protruded from the rear end of the armrest, and this is connected to a connecting portion 19 provided at the upper end of the mounting frame.
It is arranged so that it faces on the movement trajectory line.

Here, the elbow rest 18 is set so that its center of gravity is located behind the pivot point of the pin 21, and its rear end is always lowered by its own weight.

The present invention is constructed as described above, and the pins 15 are passed through the through holes 13 and 14 provided in the pivoting piece 10 and the protruding piece 12 of the support frame 4 and the mounting frame 5, and the two are rotatably connected. After that, both frames are placed along the sides of the support column 1, and the protrusion 17 is first inserted into the groove 1 serving as the guiding means.
6, and then the cup 9 is placed over the shaft bearing part 6, and the shaft 7 is passed through the shaft hole 8 into the shaft bearing part 6 and rotatably supported on the column for assembly. Of course, this work is performed at the same time for the supporting frame and mounting frame provided on the left and right sides of the support column disposed in the middle of the connected chair, so that the assembly of the left and right chairs proceeds at the same time.

Next, place the seat 2 on a horizontal piece of the support frame 4 and fix it with screws, then put the backrest 3 on the other side of the mounting frame 5 from the front and fix it with the same screws to attach the seat and backrest. Complete it, and then attach the pin 21 to the top of the support.
The assembly is completed by pivoting the elbow rest 18 through the .

When the seat of the assembled chair is laid down horizontally and ready for use, the mounting frame 5 is pushed up via the connection at the rear end of the support frame 4, and the protrusion 17 at the lower end of the mounting frame is inserted into the groove 1.
By sliding the seat back 3 onto the upper end of the backrest 6, the backrest 3 is kept pushed up and held in a somewhat backward tilted position. As the backrest rises, the connecting part 19 rises and the engaging part 23 facing the movement trajectory of the connecting part 19 is pushed up. The seat rotates until it touches the seat and is held in a horizontal position, allowing you to take a seat.

The rotation of the arm rest 18 as the backrest rises is
This can be done using any chair between them. That is,
Since the engaging part 23 of the arm rest faces on the trajectory of the connecting part 19 of the left and right mounting frames that sandwich the column, the arm rest can be rotated horizontally even when either of the left or right seats 2 is tilted down. Moreover, when one seat is reclined to sit, the arm rest can be held horizontally even if the other seat is lifted up.

By the way, in FIG. 6, instead of the groove 16 formed on the side surface of the support column to support and guide the lower end of the mounting frame 5,
This shows another embodiment in which a swinging piece 25 is used.

The swinging piece 25 has one end pivotally attached to the side surface of the column corresponding to the center position of the arc of the groove 16 formed in an arc shape with a pin 26, and the other end is provided with a protrusion 17 at the lower end of the mounting frame 5. It is pivoted at the position with a pin 27 to connect the support and the mounting frame. When the support frame 4 is rotated by pushing down the seat 2 as explained in the above embodiment, this swinging piece follows the mounting frame 5 which rises, using the pin 26 as a fulcrum. It swings and guides the lower end of the mounting frame 5 in an arc shape, and when the mounting frame is lowered as in the previous embodiment, the backrest 3
This will lead the person to a nearly vertical position, and the backrest to a backwards position when ascending.

As described above in detail with respect to the embodiments, the present invention
The backrest 3 lowers in conjunction with the lifting of the backrest, changes from a backward leaning position to a vertical position, and folds into a state facing the seat. The armrest 18, which is released from the push-up of the armrest 19, lowers its rear end by its own weight or by the bias of a spring, stands vertically, and folds to the side of the seat.
When the seat is tilted forward in use, the backrest is pushed up and guided in an arc by the groove 16 or the swinging piece 25, which is the guiding means, and when the seat takes a horizontal position, it tilts back. Be prepared to be seated. In conjunction with this movement, the connecting portion 19 of the mounting frame 5 collides with the engaging portion 23 of the armrest and is pushed up, so that the armrest is pushed up by the pin 2.
1 as a fulcrum, and the bottom surface 24 is brought into contact with the upper end of the support column to be held horizontally.

[Effect of the invention] As is clear from the above explanation, the backrest moves up and down in conjunction with the rotation of the seat, and when not in use, it can be folded flat so that it stands up along the support. At the same time as the seat is folded down, the armrests stand up, and when in use, the seat is tilted forward, the backrest is raised and tilted backwards to prepare for seating, and the armrests rotate horizontally. In this way, everything can be changed into a state of use or non-use by rotating the seat, while the elbow rest in the present invention is independent from the seat and backrest, and in between, the push-up lever, etc. Since no means are required and the structure is extremely simple, assembly is easy and it is advantageous in manufacturing. Further, the danger of being caught or the like due to the operation of these interlocking means can be avoided, so there is an advantage that it can be used safely.

[Brief explanation of the drawing]

Fig. 1 is a side view of the connected chair according to the present invention in a used state, Fig. 2 is a side view of the chair in a folded and unused state, Fig. 3 is a front view of the connected chair in a used state, and Fig. 4 is a linked chair in a used state. FIG. 5 is an exploded perspective view of the main parts, and FIG. 6 is an exploded perspective view of the main parts of another embodiment. 1... Support column, 2... Seat, 3... Backrest, 4... Support frame, 5... Mounting frame, 6... Shaft bearing part, 7... Shaft,
8... Shaft hole, 16... Arc-shaped groove serving as guiding means, 1
7...Protrusion, 18...Elbow rest, 19...Connection part, 2
3...Engagement part.

Claims (1)

[Scope of utility model registration request] The support frame of the seat is rotatably supported midway along the height of the pillars that are set up at the required intervals, and the rear end of this support frame is mounted midway along the height of the mounting frame that is fixed to the side of the backrest. At the same time, the mounting frame is held in an upright position by having its lower end slidably fitted to an arc-shaped guiding means having a length in the vertical direction provided on the side surface of the support column, and the rotational movement of the support frame is Accordingly, when this support frame falls to a horizontal position, it is raised to take a backward leaning position, and when it jumps up to a standing position, it is lowered to take a vertical position. The armrest, which is biased so as to rotate freely, is pivoted so that the engaging part provided at the rear end faces the trajectory of the connecting part provided at the upper end of the mounting frame of the backrest, and when the mounting frame is lowered, A connected chair that stands up by its own weight and converts to a horizontal position when rising.