JP3926210B2 - Articulated chair - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a connected chair in which a plurality of chairs are connected in a line in the left-right direction.
[0002]
[Prior art]
A conventional foldable connecting chair for a moving bleacher seat has a support rod facing left and right at the upper end of a pair of left and right leg rods that can be turned to a standing position facing upward and a lying position facing forward. A plurality of supports are fixed to the support rod at equal intervals in the left-right direction, and a seat, a backrest, and an armrest constituting a chair of each unit are provided between the adjacent support members, The armrest is configured so that it can be pivoted between a use position where the armrests are oriented substantially in the front-rear direction and the backrest is slightly tilted backward, and a folding position where they are all directed upwards.
[0003]
[Problems to be solved by the invention]
In the conventional connecting chair as described above, the gap between each unit chair and the support adjacent thereto is set to be as small as possible. If optional members such as a foldable cup holder cannot be installed and you want to install them, the entire connecting chair must be redesigned to do so, and the work becomes large and requires excessive costs. .
[0004]
In view of the above problems of the prior art, the present invention is formed between the chairs of each unit and the support adjacent thereto by easily changing the distance between them. It is an object of the present invention to provide a connecting chair in which an optional member can be attached to a space as required, and each unit chair can be easily replaced with one having a different left and right width.
[0005]
[Means for Solving the Problems]
According to the present invention, the above problem is solved as follows.
(1) A shaft hole in which a pivot projecting from both sides of the rear part of the seat can be fitted to each of the opposing surfaces of the plurality of supports arranged side by side in the left-right direction, and a front of the pivot in the seat An arc-shaped elongated hole centered on the shaft hole is provided so that pins protruding from both side surfaces can be fitted, and the seat is used in a position facing the front centering on the pivot, In a connecting chair that can be turned to a folding position facing, between the opposing surfaces of any one of the supports and the seat, on the surface facing the support, at least both ends of the shaft hole and the long hole of the support A spacer having a projecting shaft and a projecting portion which are fitted to the portion, and having a shaft hole and a long hole which are the same as those in the support body on which the pivot and pin of the seat are fitted on the surface facing the seat By providing, the support and the seat can be separated from each other.
[0006]
(2) In the above item (1), axial holes and long holes are provided symmetrically on both sides of the support, and symmetrical positions about the line connecting the center of the axial hole and the center of the long hole. In addition, a pair of recesses having the same depth and different opening directions are provided, and the projecting shaft of the spacer and a portion facing the recess on the surface on which the projecting portion is provided Protrusions that fit in are provided.
[0007]
(3) In the above item (1) or (2), the tip of the protrusion fitted to the bottom of the recess is screwed.
[0008]
(4) In any one of the above items (1) to (3), the plurality of supports are attached to a support rod facing in the left-right direction so that the position can be adjusted in the left-right direction.
[0009]
(5) In any one of the above items (1) to (4), an intermediate portion of the armrest is pivotally attached to the upper end portion of each support, and the back end portion of the seat and the rear end portion of the armrest are By pivotally attaching the lower end and middle part of the saddle, the seat, the backrest and the armrest, the seat and the armrest are almost in the front-rear direction, and the use position where the backrest tilts slightly backward, All of them can be pivoted to a folding position facing almost upward.
[0010]
(6) In any one of the above items (1) to (5), in the space formed between the support and the seat by the spacer, the folding table is used in a substantially horizontal position above the seat; A folding table device is provided that is movable to a folding position accommodated below the seat.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.
1 to 5 show an embodiment in which the present invention is applied to a connecting chair for a moving bleacher seat, and FIG. 6 and subsequent figures show details of each part.
[0012]
The moving bleachers will pull out each stepped floor (1) in a staircase shape from the stowed state in which multiple steps (1) (only one step is shown) are stacked in the vertical direction at the required intervals. The connecting chair (2) provided on each step floor (1) is erected from the lying position shown by the imaginary line in FIG. 2 to the standing position shown by the solid line. The unit chair (3) can be deployed and used as shown in FIG.
Moreover, in a reverse order as described above, the connecting chair (2) can be laid down and each stepped floor (1) can be moved rearward to be in the stowed state.
[0013]
The connecting chair (2) is a pair of left and right sides that can be raised to a standing position facing upward and a lying position facing forward by a tilting means (4) provided on the rear upper surface of the corrugated floor (1). Leg rods (5) and (5), a support rod (6) consisting of a square tube facing the left and right direction fixed to the upper ends of both leg rods (5) and (5), And a plurality of supports (7) having a substantially vertically long triangular shape as viewed from the side as shown in FIG.
[0014]
Each support body (7) has a rectangular recess (8) provided at the center of its lower end straddling the support rod (6) from above, and the central portion abuts the lower surface of the support rod (6). The bolt (10) penetrated from below to the front and rear ends of the fixed plate (9) facing in the front-rear direction is screwed to the front and rear ends of the lower end of the support body (7), so that the support rod (6) can be arbitrarily It can be fixed at the position.
[0015]
Each unit chair (3) is disposed between a pair of supports (7) and (7) adjacent to each other.
Each unit chair (3) has a seat (12) pivotally attached to the middle part of the left and right supports (7) and (7) with a pivot (11) whose rear end faces in the left-right direction, and a middle in the front-rear direction. A pair of left and right armrests (14) and (14) pivotally attached to the upper ends of the left and right supports (7) and (7) with mounting shafts (13) facing left and right, and the rear end of the seat (12) Shaft pins (16) (16) (15) (15) (15) and rear ends of the brackets (15) (15) projecting from both sides and the rear ends of the armrests (14) (14) 17) and a backrest (18) pivotally attached to each other. As shown in FIG. 1, the seat (12) and the armrest (14) are oriented almost in the front-rear direction, and the backrest (18) is slightly behind. As shown by the solid line in FIG. 2, the seat (12), the armrest (14), and the backrest (18) are all foldable into a folding position in which they are almost directed upward.
Since the structure of each unit chair (3) itself is not directly related to the present invention, further detailed description is omitted.
[0016]
As shown in FIG. 6, on both side surfaces of the middle portion of each support body (7), pivot shafts (19) projecting on both side surfaces of the rear portion of the seat (12) can be fitted. ) And a pin (20) projecting on both side surfaces in front of the pivot (11) of the seat (12), and a circular arc hole (21) centered on the shaft hole (19) ) Is provided symmetrically so that the rotation range of the seat (12) is restricted to the range from the use position to the folding position by the engagement of the pin (20) and the long hole (21). I have to.
[0017]
Further, a line (L) connecting the center of the shaft hole (19) and the center of the long hole (21) between the shaft hole (19) and the long hole (21) on both side surfaces of each support (7). ) Is provided at a symmetrical position with a pair of recesses (22) and (23) having the same depth and different opening directions to the left and right (see FIG. 8).
[0018]
Between the facing surfaces of any of the supports (7) and the seat (12), in this example, the left end face of the middle two supports (7) of the four supports (7) and the face A spacer (24) is provided between the right end surface of the seat (12) of the unit chair (3).
[0019]
The spacer (24) is formed on the surface facing the support (7) on at least both ends of the shaft hole (19) and the long hole (21) of the support (7) and the deep recess (22). It has a projecting shaft (25), a projecting portion (26) (27), and a projecting portion (28) to be fitted, and on the surface facing the seat (12), the pivot (11) and the seat (12) The pin (20) has the same shaft hole (29) and long hole (30) as those in the support (7) to which the pin (20) is fitted.
[0020]
As shown in FIG. 7, the protruding shaft (25), the protruding portions (26), (27), and the protruding portion (28) on the right side surface of the spacer (24) are connected to the shaft of the support (7) facing them. The hole (19) and the long hole (21) are fitted into both ends and the deeper recess (22), respectively, and the tips of the protrusions (26), (27), and (28) are attached to the set screw (31). Then, the spacer (24) is fixed to the support (7) by screwing to the bottom of the long hole (21) and the bottom of the recess (22), and further, the shaft hole (29) and the long hole on the left end surface By fitting the pivot (11) and the pin (20) of the opposing seat (12) into the (30), the support (7) and the seat (12) are separated from each other, and will be described below. A space (33) for providing the folding table device (32) can be secured.
[0021]
In this example, a spacer (24) is provided on the left side surface of two intermediate supports (7) of the four supports (7). However, the two supports (7 A spacer (24) can also be provided on the right side surface of). In this case, the spacer (24) itself is reversed in the left-right direction, and its projecting shaft (25) and projecting portion (28) are deeper than the shaft hole (19) on the right side surface of the support (7). It can be used as it is by adjusting the direction around the projecting shaft (25) so that it fits in the recess (23) on both sides, and it can be used as it is, only for the right side and left side of the support (7) There is no need to prepare two types of spacers.
[0022]
If the folding table device (32) or the like is not provided on the connecting chair (2), the spacer (24) is omitted, and the support (7) (7) between the adjacent supports (7) (7) is omitted by the thickness of the spacer (24). Each support (7) is fixed to the support rod (6) so as to reduce the distance between the seats (12) fitted in the shaft holes (29) and the long holes (30) of the spacer (24). The pivot shaft (11) and the pin (20) may be directly fitted into the shaft hole (19) and the long hole (21) of the support (7).
[0023]
As shown in FIGS. 5 and 11, an armrest support portion (34) is formed at the upper end portion of each support body (7). The middle part of the armrest (14) is fitted and pivotally attached with the mounting shaft (13).
[0024]
The left end of the shaft (fixed shaft) (13) is projected from the surface on the spacer (24) side of the support (7) to which the spacer (24) is attached.
The mounting shaft (13) includes an armrest support portion (34) and a small diameter portion (35) penetrating the armrest (14) of the support body (7), and a non-circular portion (36) having an oval cross section continuous to the left end thereof. The large-diameter portion (37) continuing to the left end and the angular shaft portion (38) continuing to the left end.
[0025]
A retaining plate (39) is fixed to the right end of the small-diameter portion (35) of the mounting shaft (13) by a set screw (40) and is prevented from coming off from the support (7). Further, the non-circular portion (36) is fitted into an oval non-circular hole (42) of the rotation stop plate (41) provided on the left side surface of the armrest support portion (34) of the support (7), The rotation is stopped by the support (7).
[0026]
A boss portion (44) provided at the rear portion of the bracket (43) in the folding table device (32) is rotatably attached to the large diameter portion (37) of the mounting shaft (13) via the bush (45). It is fitted.
[0027]
As shown in FIGS. 11 and 12, the bracket (43) has a raindrop-like shape in a side view with the tip portion facing forward, and the front portion of the boss portion (44) is centered on the boss portion (44). An arc-shaped long hole (46) is provided, and in this long hole (46), the armrest support part (34), the armrest (14), and the rotation stopper of the support body (7) in parallel with the shaft (13) By fitting the left end of the stopper pin (47) that passes through the plate (41), the bracket (43) rotates around the mounting shaft (13) from the position facing forward to the position facing downward. It is possible to move.
[0028]
At the upper edge of the bracket (43) when facing forward, a pair of front and rear supporting a protruding piece (48) facing leftward and a support shaft (49) facing upward and front-back in the upper end portion The bearing piece (50) is provided. On the support shaft (49), a bearing portion (52) provided at the rear left edge of the folding table (51) whose front half is widened to the right is externally fitted via a bush (53) and folded. As shown by the rightmost solid line in FIG. 3, the table (51) is placed on the armrest (14) and extends horizontally to the right, as shown by the imaginary line as well. It can be turned to a flip-up position facing upward.
[0029]
Further, the folding table (51) can be brought to the forward position as shown by the imaginary line in FIG. 1 by rotating the bracket (43) to the position facing downward in the state where the folding table (51) is in the raised position. Further, from this state, by rotating 90 degrees to the right about the support shaft (49), the widened portion is located below the seat (12) like the two on the left side in FIG. It can be located at the accommodation position facing the inner side of (3), that is, the right side in this example.
[0030]
One end of the spindle (49) is locked to the folding table (51), and the other end is locked to the bearing piece (50), and the folding table (51) is moved from the flip-up position side toward the use position. A torsion coil spring (biasing means) (54) that is constantly biased is provided. Therefore, even when the bracket (43) is directed downward, the folding table (51) is always urged toward the accommodation position.
[0031]
On the left side surface of each bracket (43), the cylindrical body (55) can rotate with a required resistance against the case (56), and the above-mentioned in the known rotary damper (57). The case (56) is fixed with an appropriate spacer (58) and a set screw (59), and the square hole (60) provided in the center of the cylindrical body (55) has a square axis in the mounting shaft (13). It is fitted to the part (38). A disc-shaped presser plate (61) is fixed to the left end of the square shaft portion (38) passing through the cylindrical body (55) with a set screw (62).
[0032]
As such a rotary damper (57), for example, a “disk damper” manufactured by Fuji Seiki Co., Ltd. can be suitably used.
[0033]
By providing such a rotary damper (57), the bracket (43) is prevented from inadvertently moving and the operability of the folding table (51) is improved.
[0034]
As shown in FIGS. 1, 3, and 5, a holding means for holding the folding table (51) in the storage position is provided on the lower front surface of the support (7) provided with the folding table device (32). As shown, a known magnet catch (63) that can be attracted to a magnetic part of the folding table (51), such as a steel plate part, is attached, so that the folding table (51) is strongly held in the storage position. It has become.
[0035]
As shown in FIGS. 11 to 13, on the left side surface of the bracket (43), a cover that covers the left side surface of the bracket (43), the rotary damper (57), the left end of the mounting shaft (13), and the like. (64) is detachably mounted by screwing a pair of front and rear bosses (65) provided therein to the bracket (43). The cover (64) has a shallow dish shape having a side shape substantially the same as the side shape of the bracket (43), and at the upper end thereof, the outer surface of the connecting portion between the bracket (43) and the folding table (51). An upward protrusion (66) is provided to cover the surface.
[0036]
By this cover (64), the safety of the seated person and the passerby can be ensured and the appearance can be improved. Further, since the outer surface of the connecting portion between the bracket (43) and the folding table (51) is covered by the upward protrusion (66) of the cover (64), clothes of the next-seat occupant are sandwiched between the connecting portions. Can be prevented.
[0037]
A folding table device (32) is formed by the mounting shaft (13), bracket (43), folding table (51), rotary damper (57), magnet catch (63), cover (64), etc. With this folding table device (32), when the folding table (51) is in the use position, it is placed on the armrest (14) and can be stably used as a memo stand, etc. By raising the bracket (43) downward as it is, it can be easily and compactly accommodated in a non-intrusive place below the seat (12), and has many restrictions on movement. An effect such as being able to be suitably incorporated in a folding chair for a bleacher can be obtained.
[0038]
【The invention's effect】
According to the first aspect of the present invention, by providing the spacer between the opposing surfaces of the support and the seat, the distance between the support and the chair can be easily changed, and the space formed between them can be changed. If necessary, it is possible to easily attach optional members or replace the chairs of each unit with ones having different left and right widths.
[0039]
According to the second aspect of the present invention, the same spacer can be attached to both sides of the support by changing the direction thereof, and two types of dedicated right side and left side of the support are provided. There is no need to prepare spacers.
[0040]
According to the third aspect of the present invention, the spacer can be attached in advance to one side surface of the support, and the assembling work becomes easy.
[0041]
According to the invention described in claim 4, in parallel with the provision of the spacer, the plurality of supports are moved in the left-right direction along the support rod so that the interval between them becomes large. A space for mounting the optional member can be easily secured without changing the width in the left-right direction of the chair.
[0042]
According to the invention of claim 5, the chair of each unit is a folding chair, the interval between the chair and the support that supports it is changed as necessary, and an optional member is attached thereto, or the chair of each unit is mounted. It can be exchanged for one with different left and right widths.
[0043]
According to the sixth aspect of the present invention, a space can be formed between the support and the seat using the spacer, and the folding table device can be easily provided there.
[Brief description of the drawings]
FIG. 1 is a side view showing a state in use of an embodiment when the present invention is applied to a connecting chair for a moving bleacher seat.
FIG. 2 is a side view showing a folded state with a solid line and a state in which it is further folded forward with an imaginary line.
3 is a front view of the state shown in FIG.
4 is a plan view of the state shown in FIG.
FIG. 5 is an enlarged front view of the main part, similarly.
FIG. 6 is also a side view of one support body.
7 is an enlarged cross-sectional view taken along the line VII-VII in FIG.
FIG. 8 is an enlarged cross-sectional view taken along the line VIII-VIII in FIG.
FIG. 9 is a perspective view of the spacer as seen from the right front side.
FIG. 10 is a perspective view of the spacer as seen from the left front side.
11 is an enlarged cross-sectional view taken along the line XI-XI in FIG.
FIG. 12 is an exploded perspective view of the folding table device.
FIG. 13 is a perspective view of the cover as seen from the rear side.
[Explanation of symbols]
(1) Corrugated floor
(2) Connecting chair
(3) Unit chair
(4) Tilting means
(5) Legs
(6) Support rod
(7) Support
(8) Concave
(9) Fixed plate
(10) Bolt
(11) Axis
(12) Seat
(13) Mounting shaft (fixed shaft)
(14) Armrest
(15) Bracket
(16) (17) Axis pin
(18) Backrest
(19) Shaft hole
(20) Pin
(21) Long hole
(22) (23) Recess
(24) Spacer
(25) Projection shaft
(26) (27) Projection
(28) Projection
(29) Shaft hole
(30) Long hole
(31) Set screw
(32) Folding table device
(33) Space
(34) Armrest support
(35) Small diameter part
(36) Non-circular part
(37) Large diameter part
(38) Square shaft
(39) Retaining plate
(40) Set screw
(41) Detent plate
(42) Non-circular hole
(43) Bracket
(44) Boss
(45) Bush
(46) Long hole
(47) Stopper pin
(48) Projection
(49) Spindle
(50) Bearing piece
(51) Folding table
(52) Bearing
(53) Bush
(54) Torsion coil spring (biasing means)
(55) Cylinder
(56) Case
(57) Rotating damper
(58) Spacer
(59) Set screw
(60) Square hole
(61) Presser plate
(62) Set screw
(63) Magnet catch (holding means)
(64) Cover
(65) Boss
(66) Upward projection

Claims (6)

A shaft hole in which a pivot projecting on both sides of the rear portion of the seat can be fitted to each of the opposing surfaces of the plurality of supports arranged side by side in the left-right direction, and on both sides of the seat in front of the pivot An arc-shaped long hole centered on the shaft hole is provided so that a projecting pin can be fitted, and the seat has a use position facing the front centered on the pivot and a folding position facing the upper side. In the connecting chair that can be rotated in the direction between the support surface of any support and the seat, on the surface facing the support, on the shaft hole of the support and at least both ends of the long hole A spacer having a projecting shaft and a projecting portion to be fitted and having a shaft hole and a long hole identical to those in the support body to which the pivot and pin of the seat are fitted is provided on the surface facing the seat. The connecting chair, wherein the support and the seat can be separated from each other . The shaft hole and the long hole are respectively provided symmetrically on both side surfaces of the support, and the same depth is opened at a symmetrical position around the line connecting the center of the shaft hole and the center of the long hole. A pair of recesses whose directions are different from each other are provided, and a protrusion that fits into the recess is provided on a protruding shaft of the spacer and a portion of the surface on which the protrusion is provided facing the recess. Item 1. A connecting chair according to item 1. The connecting chair according to claim 2, wherein a tip portion of a protrusion fitted to the bottom of the recess is screwed. The connecting chair according to any one of claims 1 to 3, wherein a plurality of supports are attached to a support rod facing in the left-right direction so that the position can be adjusted in the left-right direction. By pivotally attaching the middle part of the armrest to the upper end part of each support and pivoting the lower end part and the middle part of the backrest to the rear end part of the seat and the rear end part of the armrest, respectively. 2. The seat back and the armrest can be rotated to a use position where the seat and the armrest are substantially directed in the front-rear direction and the backrest is slightly inclined backward, and a folding position in which they are all directed upward. The connection chair in any one of -4. A folding table that allows the folding table to be moved between a use position that is substantially horizontal above the seat and a folding position that is accommodated below the seat by a spacer in a space formed between the support and the seat. The connection chair according to any one of claims 1 to 5, wherein a device is provided.

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