JPS62101211A - Chair for extensible moving seat - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is capable of expanding and contracting to extend like a staircase when in use, and to contract and store a large number of connected decks (floor stands) like a shelf when not in use. This invention relates to foldable chairs installed on each deck of the movable bleachers.

[Prior art] Telescoping movable bleachers are made by connecting multiple bleachers at different heights on a deck equipped with wheels, and when not in use, a short bleacher seat can be moved to a taller one. The chairs installed on Deck I must be of a type that does not interfere with the deflation and storage of each individual unit, as the chairs will be stored under the deck and will ultimately be stored in the form of a shelf.

For this reason, the chairs installed in this type of movable bleachers are generally foldable and can be tipped over so that they can be accommodated in the narrow space between the decks in the retracted state.

The chair device disclosed in Japanese Utility Model Application Publication No. 58-121247 is an example of a conventionally known movable seat chair with a folding structure, and the chair shown here is a seat device.

+1. After the platform was manually folded along the backrest, the column was driven forward by a motor and flattened against the top of the deck, making it possible to retract and store the seats.

[ffi L! [Problems that TI is trying to solve] 1- As mentioned above, chairs for movable bleachers that can be moved are known from the past, but the chairs proposed so far are As for the arm rest and backrest, each chair is folded by hand, with the backrest being formed in advance parallel to the pillar, and the seat and armrest being folded manually, and then placed on the deck. All the chairs that had been used were knocked down in preparation for storage.

Therefore, it takes a lot of effort to store a movable seating area equipped with a large number of chairs, and if it is not folded properly, it will not be able to fall flat.
In view of these conventional problems, the present invention uses a motor to drive the chair support to push it forward and fold it onto the deck. At the same time, the arm rest installed horizontally at the top of the column is folded parallel to the column, and the backrest, which stands in a backwards position behind the column, is also aligned along the back of the column, so that the entire structure is centered around the column. It can be automatically folded onto the deck while being flattened, and when in use, the armrests and backrest can be returned to their original positions as the support is raised, allowing the mobile viewing area to be set up in a seated position. The purpose is to provide seating chairs.

[Means for Solving the Problem] That is, in order to solve the ha problem, the present invention provides a base frame at the rear of the deck of a single movable bleacher seat, and connects the lower end of the support to a pivot shaft installed horizontally on the base frame. 11 is pivotally supported, the support is rotated by the operation of a link that transmits the rotation of the drive motor, and the base and backrest can be folded in conjunction with this rotation. To describe it in terms of the frame, the left and right columns have their lower ends supported on pivot shafts provided in the base frame so as to be rotatable from an upright position to a forward-folded position, and also support a seat midway in their height; An armrest is rotatably supported around a support shaft at the upper end of each column, and the middle of the height of the side edge is rotatably connected to the rear of the armrest, and the lower end is connected via a connecting link. a backrest that is connected to the middle of the height of the support column and supported in an upright manner at the rear of the support support; A movable bleacher chair comprising a guided stage whose lower end is guided up and down along a support, and an interlocking member connected to the lower end of the interlocking link and whose other end is supported on a support shaft provided in a base frame, When the above-mentioned support is in the standing position, the interlocking rod is thrust up to raise the iJi link via the interlocking link from the pivot point 7') with the support, pushing up the backrest and simultaneously holding the arm rest in a horizontal position. When the support is tilted forward, the pivot shaft is used as a fulcrum, and as the forward tilt progresses, the interlocking rod is pulled to pull down the interlocking link along the guide means, and the connecting link is rotated to lower the backrest. To provide a telescopic movable bleacher chair which can be lowered and aligned along the back of a support and at the same time rotate an armrest to be folded parallel to the support.

[Function] When the movable bleacher chair according to the present invention is used, the support is erected above the pivot shaft, and in one method, this position is fixed to the drive rotation shaft that decelerates and transmits the rotation of the drive motor. It is held by a link member that is attached. In this standing posture, the interlocking rod, whose one end is pivoted to the support, pushes up and pushes the interlocking link, which rotates the link approximately 90 degrees and pushes up the lower end of the backrest, and at the same time, the elbow The rear end of the table is pushed up to return it to the horizontal position, and the rear end of the armrest is used to push the middle part of the height of the backrest backwards, converting it into a backward leaning position, making it possible to sit.

This raising of the support is performed simultaneously for all the chairs in a horizontal row supported through one pivot shaft, and the armrests and backs of all the chairs are Activate the seat and change it to a position where you can sit.

Next, when retracting, that is, in a forward-folding position, the column is tilted forward about the pivot shaft, so that the upper end of the interlocking rod is moved downward along the guide means due to the difference in the pivot points of the interlocking rod with respect to the column. Along with this, the backrest and arm rest are attached to the support via interlocking links and connecting links, and at the same time as the support falls, they are folded flat onto the top of the deck and converted into a usable state. - Hereinafter, embodiments of the present invention will be explained, and the features thereof will be explained in detail.

[Example] Figure 1 is a partially sectional side view of the main parts in a seated and rotated standing position, Figure 2 is a partially cutaway front view of the main parts, and Figure 3 is the same as Figure 1. This is a side view showing an enlarged portion of
FIG. 4 is an enlarged front view of the portion shown in FIG. 3.

The reference numeral 1 in the drawing is a base frame provided on the rear upper surface of the single deck 2 of the spectator seats, 3 is a pivot shaft passed between the opposing base frames, and 4a is this pivot shaft. This is the lower half of the support column which is freely pivoted on the shaft.

A plurality of base frames 1 are arranged along the rear edge of the deck at intervals along the rear edge of the deck, and the lower half of the column 4a is attached to the pivot shaft 3, and the lower half of the column stands up from each base frame. A connecting rod 5 for horizontally connecting a plurality of seats is provided between the upper ends of the seats 4a.

4b is the upper half of the column which is fixed to the above-mentioned connecting rod 5 at a required interval in an upright manner, and 6 is rotatably supported on a bracket 7 provided halfway up the height of this upper half. Number 8 is the backrest, and number 9 is the armrest.

In this embodiment, in order to provide integrity to a plurality of seats that are connected horizontally and to simplify the structure, the lower half 4a is reduced relative to the upper half 4b of the column by interposing the connecting rod 5 as described above. However, the number of base frames is also reduced, but in reality the lower half 4a
The combination of the upper half portion 4b and the upper half portion 4b constitute one support.

Now, the elbow rest 9 is rotatably attached to the upper end of the upper half of the column via a support shaft 10, and the backrest 8 connects the rear end of the connecting fitting 11 extending from the rear part of the elbow rest 9 to the side edge. Shaft mounting 12 in the middle of the height of
At the same time, the lower end of this side edge portion is connected to the middle of the height of the upper half portion 4b of the column via a connecting link 13, so that it is supported.

The connecting link 13 has a dogleg shape and is pivoted at both ends 14 and 15 to the backrest and pillar, respectively, so that it can rotate, and an interlocking link 16 that restricts rotation is attached to the pivot in the middle of its bent length. 16
are connected to each other for free rotation via '.

Reference numeral 17 denotes a guide means provided vertically along the rear edge of the upper half portion 4b of the column, 18 denotes an interlocking rod that passes through the guide means provided on each column and extends in parallel to the connecting rod 5;
Reference numeral 9 designates an interlocking member whose lower end is freely rotatably attached to the base frame 1 via a support shaft 20, and whose upper end is welded and connected to the interlocking rod 18.

The support shaft 20 of the interlocking member 19 is located above and somewhat behind the pivot shaft 3 that supports the column, and when the column falls forward using the pivot shaft 3 as a fulcrum, it falls and interlocks using the support shaft 20 as a fulcrum. The rod 18 is drawn so that it can be moved to the lower end of the guide means.

The lower end of the interlocking link 16 is connected to an interlocking rod 18 that slides onto the guide means 17, and is configured to move up and down along the guide means as the interlocking rod moves.

In the figure, 21 is a drive rotation shaft rotated by a motor,
Reference numerals 22 and 23 are links that transmit the rotation of the rotating shaft 21 to the lower half portion 4a of the column.

When the two links 22 and 23 extend linearly around the connecting point 24, they push out the lower end of the lower half 4a of the support column to make it stand up, and when bent into a dogleg shape, the support supports the pivot shaft 3 as a fulcrum. This will cause it to rotate and fall forward.

'', when the rotating shaft 21 is rotated by the rotation of the motor, and the two links 22 and 23 extend linearly and the column supported by the pivot shaft 3 stands up, the interlocking rod 18 connected to the interlocking member 19 is pushed up and reaches the upper end of the guide means 17, and as a result of this pushing up, the interlocking link 16 rises, and the connecting link 13 jumps using the pivot point 15 as a fulcrum, and the back air 8
This will push up the As the armrest 9 is pushed up, the arm rest 9 connected via the connecting fitting 11 rotates about the support shaft 10 and assumes a substantially normal posture, and the protrusion of the rear part due to this rotation causes the back air to 8. This will push the body backwards and hold it in a backward tilted position (see Figure 1.3).

The seat 6 is rotatable about the support shaft 25 of the bracket 7, and is normally raised up by the bias of the coiled spring 2B. Note that the rear surface of the lower half 4a of the support in the upright position abuts against the stopper 27 to prevent it from falling backward.

This erecting operation of the support column is performed by extending the movable seats and pulling out each seat unit from under the rear unit, and then operating all the motors described in iii'iii. in this case,
The chairs installed on each single deck will be operated individually. In actual use, the seat 6 that has been raised can be tilted horizontally to allow the seated person to sit, and when the seated person leaves the seat, the seat will be raised by the paneka.

Next, when retracting from this state, the motor is reversed before the seats are retracted.

That is, when the drive motor is reversed and the drive rotation shaft 21 in FIG. 1.3 is rotated clockwise, the two links 22 and 23 are bent in a dogleg shape and pivot to pull down the lower half of the column 4a. It will fall forward using the mounting shaft 3 as a fulcrum.

As the support column falls, the interlocking member 19 also falls forward using the shaft 2o as a fulcrum, but since the support shaft 2o is located behind the pivot shaft 3, the upper end moves backward as it falls, and the interlocking member 19 slides onto the kite means 17. The rod 18 is pulled down and the interlocking link 16 is pulled down.

As a result, the connecting link 13 is approximately 90 degrees from the pivot point 15.
``While rotating and lowering the back air 8, the arm rest 9 is also rotated about the support shaft 10, and both are aligned so that the top of the support is parallel to the part 4b.

The two-dot chain line in Figure 1.3 shows the overturning posture of the support column caused by the above-mentioned drive motor.As the seat jumps up, the support support falls over, and the elbow rest and back air are aligned parallel to this support support. It will become flat and you will have to lie down on deck 2.

In addition, back air due to the ups and downs of the support 8. The operation of the armrest 9 is achieved by means of an interlocking rod 1 passing through guide means 17 provided on each support.
The vertical movement of 8 will simultaneously perform the process for a plurality of seats that are connected laterally.

[Effects of the Invention] As clarified in the description of the embodiments described in section 2, the present invention is characterized in that the upper end of the interlocking member is moved as the support rotates between the upright position and the falling position with the pivot shaft as the fulcrum. 42 downwards along the length of the support along the kite means via the interlocking rod;
The structure is such that this vertical movement is transmitted to the back air and the elbow rest via two links, and the elbow rest and the back air are pivoted so that they can rotate, and by connecting them, the elbow rest is held horizontally when the support is erected. This allows the user to sit with the back tilted slightly backwards, and by tilting this support forward using the pivot shaft as a fulcrum,
Since the above-mentioned elbow rests and backrests are aligned parallel to the pillars and can be folded flat, when the movable seats are extended and put into use, all the chairs for each individual seat must be erected as one. The seats can be set up for immediate use, and when the seats are to be stored, they can be folded flat onto the top of the deck using the drive of a motor, allowing for quick work.

Furthermore, when the two legs are stored, the back and elbow rests are reliably aligned along the support, and each arbitrary movement is regulated.
This has the advantage that when a single bleacher seat is retracted, it can be handled safely without colliding with the single deck at the rear.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and Fig. 1 is a side view of the main part, partially cut away, in a standing position in which the seat can be used, and Fig. 2 is a side view of the main part, with a part cut away. Front view, Figure 3 is the 1st
FIG. 4 is a side view showing an enlarged portion of the figure, and FIG. 4 is a front view showing an enlarged portion of FIG. 3. l... Base frame, 3... Pivot shaft, 4a, 4b... Lower half and upper half forming the support column, 6... Seat, 8... Back air. 9... Elbow rest, 10... Support shaft, 13... Connecting link, 16... Interlocking link, 17... Guide means, 18
... Interlocking rod, 19... Interlocking member, 20... Support shaft

Claims (1)

[Scope of Claims] Left and right columns that have their lower ends supported on a pivot shaft provided in the base frame so as to be rotatable from an upright position to a forward-folded position, and that support the seat midway in their height, and each of the pillars. An armrest is rotatably supported at the upper end with a support shaft as a fulcrum, and the middle of the height of the side edge is rotatably connected to the rear of the armrest, and the lower end is connected to the support via a connecting link. The backrest is connected to the middle of the height of the column and is supported in an upright manner at the rear of the column, the upper end is pivoted to the middle of the length of the link and the interlocking link hangs down, and the lower end of the interlocking link is It consists of a guide means that guides up and down along the column, and an interlocking member that is connected to the lower end of the interlocking link and whose other end is supported on a support shaft provided in the base frame. Through the interlocking link, the connecting link is raised from the pivot end with the support to push up the backrest, and at the same time, the armrest is held in a horizontal position to enable seating, and when the support is in the forward position, the Using the pivot as a fulcrum, as the forward tilt progresses, the interlocking link is pulled down along the guide means by pulling the interlocking rod, and the connecting link is rotated to pull down the backrest along the back of the support and align it, at the same time rotating the arm rest. A telescoping movable bleacher chair that can be folded parallel to the pillar.