JPS591555Y2 - Chair - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a large number of chairs that are installed in succession as spectator seats in a relatively large space such as a gymnasium or a hall.

These days, they are often used for multiple purposes in sports, gymnasiums, halls, etc., and in order to accommodate this, there is an increasing need to use the limited space effectively without wasting it.

In order to accommodate this, in particular, the floor bases of the bleacher seats, which are structured in a tiered manner, are sequentially stored inside the floor bases at the rear, so as not to take up wasted space when the bleachers are not in use. A new one is being developed.

However, the seat part installed on this retractable floor base has conventionally had an extremely simple structure in the form of a so-called bench, which is simply a board horizontally straddled, as seen in the bleachers of outdoor sports fields, for example. The feeling could never be called good.

Nowadays, as sports and other various events are held frequently in various places, there is a need not only to accommodate a large number of spectators, but also to provide seating comfort.

This idea was devised in view of the above-mentioned circumstances, and is particularly designed to be installed on the retractable floor base, to be assembled together with the floor base so that it can be stored in the rear floor base, and to be comfortable to sit on. It is an object of the present invention to provide a chair that is easy to assemble and store.

Below, the chair of this invention will be explained based on the illustrated embodiment. The chair of this invention generally consists of a support 1, a seat plate 2, a backrest 3, an arm rest 4, and a memo stand 5. A required number of them are installed in continuous rows along the rear edge of the upper surface.

The floor stands A form tiered spectator seats, and the floor stands A on each tier can be stored inside the upper floor stand A when not in use.

The column 1 is made of a metal pipe, and its lower end is foldably attached to the floor stand A via a metal fitting 7.

Lock stopper shears 71 to 6 are horizontally protruding and fixed near the lower end of the column 1, passing through the column at right angles to the axial direction.

On the other hand, in the support post support, the hardware 7 is formed into a mountain shape, and the upper half of the front edge of the upright left and right side pieces 8.8 is tapered in the rear direction, and the upper part of the tapered part is In order to lock the lock stopper shaft 6, a locking notch 9 in a substantially triangular shape is provided at a corresponding position.

The required number of gold e17 support supports are installed at regular intervals according to the width of the chair, and the inner space 10 is installed along the rear edge of the upper surface of the floor stand A, and opens in the front, rear, and upward directions. ing.

The post supports installed at regular intervals are golden! At the widthwise center of the internal space 10 of the IJ7, the lower end of the support column 1 is disposed with a slight rearward inclination when assembled.

Adjacent chairs share a single support 1 placed in the middle.

The support column 1 is supported so as to be rotatable in the forward direction about a support pin 11 which is attached horizontally between the left and right side plates 8, 8 of the metal fitting 7.

This pin 11 is attached along the front edges of the left and right side plates 8, 8, passing through the left and right side plates 8, 8 at an intermediate portion below the locking notch 9.

Further, a spring mounting hole 1 is provided at the lower end of the column 1.
2 is drilled, and one end of a spring 13 facing backward and diagonally downward is fixed to this mounting hole 12, and the other end of this spring 13 is attached to the left and right side plates of the metal fitting 7. It is fixed by a spring hook shaft 14 that is installed horizontally across 8, 8.

And spring hook shafts 1 to 14 are left and right side plates 8
, 8, passing through the left and right side plates 8, 8 at the central portion in the width direction along the lower edges of the left and right side plates 8, 8.

Further, on the lower edge band of the left and right side plates 8, 8, there is a support pin 11 slightly below the locking notch 9, and a pillar support pin 11.
A lock shaft 15 is horizontally passed through between the left and right side plates at a location located above.
The support supports arranged in rows at regular intervals are rotatably arranged so as to pass through the entirety of the hardware 7, and one end of the supports protrudes outside the entire chair, and a cross-section shaped pedal 16 is attached to this protrusion. 16 has an upward slope in the front and is fixed at the rear end portion.

The lock shaft 15 secures a lock cam 17 between the left and right pieces 8, 8 of the metal fitting 7.

This lock cam 17 is fixed to the lock shaft 14 at its rear end, and has a locking notch 17 a that opens upward at its front end, and one end of a spring 18 is located at the rear end of the lock shirt 1 to 15 fixed part. The other end of this spring 18 is fixed to the spring hookshaft I.14, and two lock cams 17 are fixed in parallel with a gap between them, and the locking notch 17 is fixed to the spring 18.
The lock stopper shaft 6 of the support column 1 is installed at the time of assembly in a.

A lock stopper shaft 19 is further installed horizontally between the left and right pieces 8, 8 of the metal fitting 7 in the support post holder.

This lock stopper shaft 19 is provided above the lock cam 17 to prevent the lock cam 17 from springing upward when the chair is folded and not in use.

A seat plate 2 is attached to the middle part of the support column 1 via a seat support arm piece 20.
is attached so as to protrude toward the front.

The seat-feeding arm piece 20 is formed in a cross-sectional shape, and its rear end is rotatably attached to the support column 1 with a pin 21. piece 20
A seat plate 2 is formed to be placed on top a, and a seat stopper metal fitting 22 is fixed to the column 1 to support the lower part of the seat plate 2 during assembly.

A backrest 3 is provided slightly above the dust attachment position of the pillar 1 via a side-supporting metal fitting 23 so as to straddle between the pillars 1 and 1.

The side supporting hardware 23 is made of a metal plate with a cross-section having a cross section, and one side piece thereof is fixed to the outer surface of the support column 1, and the other side piece is arranged so as to face inward and fixes the lower half of the backrest 3. It is configured to do this.

Pin 2 is placed near the rear of the upper end of this side feeder 9123.
At 4, a material receiver 4 is rotatably attached together with a memo stand 5.

The material receiver 4 has a structure in which a material receiver main body 4b is mounted on the upper part of a material receiver pipe 4a.

The tip of the pipe 4a is the arm piece 20 for supporting the material.
It is rotatably connected by a pin 26 to the upper end of a one-shaped support pipe 25 which passes through the tip of the seat plate 2 and is arranged parallel to the width direction at the lower part of the seat plate 2.

The memo stand 5 is formed to be placed on the upper surface of the elbow rest 4.

That is, the memo stand 5 is rotatably attached to the chair body via a memo stand attachment pipe, and the memo stand attachment pipe consists of an inner bite tube 27 and an outer pipe 28, and the rear part of the inner pipe 27 is It is bent downward at a required slope, and a guide pin 29 is attached near the tip end that penetrates horizontally and projects to the left and right.

The outer pipe 28 is shorter and straighter than the inner pipe 27, and the inner pipe 27 is rotatably inserted into the outer pipe 28. A guide pin 29 of the inner pipe 27 is inserted near the tip of the outer pipe 28. , and in order to allow the guide pin 29 to move from vertical to horizontal during assembly, a slit 30 perpendicular to the axial direction is bored in the circumferential surface, and this slit 30
As shown in the figure, there are two holes perforated on the circumferential side.

The outer pipe 28 has a metal memo stand plate 3.
1 is fixed along the axial direction, and this memo stand holder has a memo stand 5 placed on the upper surface of a plate 31.

A connecting support piece 31 is fixed to the rear end of the inner pipe 27 at a right angle downwardly, and the connecting support piece 31 is rotated by a pin 24 near the rear of the upper end of the side supporting hardware 23. A connecting rod 33 having a built-in compression coil spring 32 is rotatably attached to the end of the connecting support piece 31, and the other end of this connecting rod 33 is connected to a pin 21 to which the seat plate 2 is pivoted. It is rotatably pivoted by.

As shown in FIG. 10, this connecting rod 33 has a compression coil spring 32 built into the inside of a pipe 34, and one end that is pivotally connected to the pin 21 is threaded on the inner circumference of the pipe 34, and the head Bolt 3 with pin insertion hole 35a drilled in
5 is screwed in so that fine adjustment can be made by adjusting the bolt 35. On the end side connected to the connecting branch 31, a rib 34a is attached to the tip of the pipe 34 so that the length and diameter are reduced by a certain amount. A compression coil spring 32 is provided protruding from the inner circumferential surface, inserted into the pipe 33, and partially protruding from the tip of the vibrator 34 so that the base part of the connecting piece 36 can be locked by the rib 34a. is locked at a required length, which is a length that will keep the memo stand 5 horizontal during assembly, and the connecting branch 31 of the inner pipe 27 is slanted so that its lower end faces forward. Fixed.

A required number of chairs constructed as described above are arranged in a continuous row in a row.

Next, to explain how this invention is used, when assembling it, first the floor stand A is pulled out from inside the rear floor stand A and fixed.

In the stored state, the chair supports 1 are tilted forward, and the seat plate 2 and armrests 4 are arranged so as to be folded over the backrest 3.

Further, the axis of the memo stand mounting pipe is oriented in the same direction as the support column 1, and the memo stand 5 is disposed within the support support posts 1,1.

When assembling the chair, the lock cam 17 is released from the lock stopper shaft 19 by stepping on the pedal 16.
After that, if you stand up the pillar 1, the wax l of the pillar 1 will be removed.
- The shaft 6 is locked in the locking notch 9 of the hardware 7, and when the lock pedal 16 is released, the lock cam 17
rotates upward about the lock shaft 15, locks the lock stopper shaft 6 at the locking notch 17a, and the support column 1 is fixed.

Furthermore, when the front part of the seat plate 2 is held and the seat plate 2 is pushed down, the seat plate 2 rotates downward using the pin 21 as a fulcrum, and at the same time, the seat plate 2 and the elbow rest rotatably connected by the support pipe 25 4 also rotates downward using the pin 24 as a fulcrum and is fixed in a predetermined position.

To assemble the memo stand 5, first open the memo stand 5 outward so that it is approximately parallel to the side edge of the seat plate 2, then push up the memo stand 5 upwards using the pin 24 as a fulcrum. In this case, the pushing force of the compression coil spring 31 rotates smoothly, and the memo stand mounting pipe becomes horizontal due to the locking of the compression coil spring 31, the memo stand 5 stands upright, and the memo stand 5 further rotates inward. It's external vibrator 2
8 is a guide pin 2 that rotates and moves within the slit l-30.
By locking 9, the memo table 5 is fixed horizontally.

When folding the chair, first open the memo table 5 outward and stand it upright, and then push it down further to compress the connecting branch 31 that connects to the compression coil spring 32 from the point where its tip is tilted toward the rear. The repulsive force of the coil spring 32 acts to move the memo stand 5 toward the support 1, ensuring that the memo stand 5 is brought into close contact with the support 1, and then rotates the memo stand 5 inward. located at the bottom of the

After that, by pushing up the seat plate 2, the arm rests 4 can be folded in the direction of the support column 1 at the same time.

After that, by stepping on the pedal 16 and removing the lock cam 17 from the lock stopper shaft 6, and further pushing the support column 1 forward, the entire chair will be folded so as to be stacked on the top surface of the floor stand A, and this folded height will be adjusted to accommodate the storage height. As much as possible, it will be lower than the internal height of the rear floor stand A.

The floor stand A is then stored inside the rear floor stand A.

This invention consists of the above-mentioned structure, and by simply stepping on the pedal provided on the outermost chair among a large number of chairs arranged in a row, all the chairs simultaneously fall forward, and the seat plate The receiver or memo stand can be easily folded, so the entire chair can be folded efficiently in a short time, and the floor stand can be stored sequentially in the rear floor stand together with the chair. Since it is difficult to develop a folding mechanism for the chair part, it is possible to provide a chair that is more comfortable to sit on than this type of chair, which is simply made by straddling a board.

[Brief explanation of drawings]

The drawings show an embodiment of this invention; Fig. 1 is a side view of the chair installed on the floor stand, Fig. 2 is a plan view thereof, Fig. 3 is a side view showing the state of storage, and Fig. 4 is a side view of the chair installed on the floor stand. Figure 5 is a front view of the chair, Figure 6 is a partial plan view thereof, Figure 7 is a partial side view showing the support folding mechanism, and Figure 8 is a side view showing the chair in its folded state. FIG. 9 is a partial side view showing the memo stand, FIG. 10 is a vertical sectional view showing the connecting rod of the memo stand, and FIG. 11 is a cross sectional view of the outer pipe of the memo stand. A... Floor stand, 1... Pillar, 2...
... Seat board, 3 ... Backrest, 4 ... Elbow rest, 5 ... Memo stand, 6 ... Lock stopper shaft, 7 ...・・The post support is hardware, 8・
...Left and right side pieces, 9...Locking notch, 1
0...Inner space, 11...Pin, 12
...Mounting hole, 13...Spring,
14...Spring hook shaft, 15...
...Rock shaft, 16...Pedal, 1
7... Lock cam, 18... Spring, 19... Lock stopper shaft, 20
・・・・・・Arm piece for feeding the seat, 21・・・・・・Pin,
22... Seat stopper metal fittings, 23...
Side carrying hardware, 24...Pin, 25...
・Support vibrator, 26...Pin, 27...
・Inner bite tube, 28...Outer pipe, 29...
...Guide pin, 30...Slit, 31.
...Connection support piece, 32 ...Compression coil spring, 33 ...Connection rod, 34 ...Pipe, 35 ...Bolt, 36. ...Connection support piece.

Claims (1)

[Scope of utility model registration request] For chairs that are installed in rows with multiple consecutive legs on the floor stand of the bleachers, the supports of each chair that support the seat plate, armrests, backrest, memo stand, etc. are supported by support supports fixed at regular intervals to the floor stand. is pivotally attached via a metal fitting so that it can rotate freely in the front and rear directions, and a lock stopper shaft is provided protruding from the circumferential side near the bottom end of this support.On the other hand, the support post is shaped like a metal piece. A pillar is placed between the left and right sides, and the left,
A locking notch for locking the lock stopper shaft is provided on the front edge of the right side piece, and at the rear and lower part of the locking notch, the strut holder of each column rotatably connects the lock shaft that communicates with the hardware. Installation: This lock shaft secures a lock cam between the left and right pieces, and this lock cam has a locking notch facing upward for locking the lock stopper shaft of the column at its front end, and a locking notch facing upward for locking the lock stopper shaft of the column at its rear end. is connected to a spring disposed from below, and a pedal is fixed to the lock shaft, and by stepping on this pedal, the lock shaft rotates, the lock cam is released from the lock stopper shaft, and the column is moved forward. A chair characterized by being configured to collapse.