JP2022118190A - Backrest for chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To have a lead which allows safe approach to a chair for seating through a passage in a chair used in facilities such as a theater and an auditorium.

SOLUTION: A backrest for a chair includes a back-contact member 40 which is arranged on the front side of a chair 1 in a front-back direction X2 and makes contact with a back of a seated person and a back surface plate member 6 for supporting the back-contact member 40 from the back side in the front-back direction X2. The back surface plate member 6 includes: an upper side 63; a side 64 positioned outside the upper side 63 in a right-left direction X1; and a first connecting side 65 which connects an upper end part 64a of the side 64 and an outside end part 63a in the right-left direction X1 of the upper side 63 and forms a flat surface inclined downward to the outside at an outer peripheral edge part of the back surface plate member 6.

SELECTED DRAWING: Figure 2

COPYRIGHT: (C)2022,JPO&INPIT

Description

TECHNICAL FIELD The present invention relates to a chair backrest used for chairs installed in facilities such as theaters and auditoriums.

Conventionally, as a chair installed in a facility such as a theater or a lecture hall, for example, as shown in Patent Document 1, an elastic member such as urethane is positioned on the front side along the front-back direction of the facility and contacts the back of the seated person. and a back plate member as a strength member that supports the back support member and supports the load of the seated person input through the back support member. ing.
Since a plurality of such chairs are arranged side by side in the front and rear direction of the facility, the back plate member and The space in the front-rear direction is set large, and the dimension in the width direction of the back plate member is also large with respect to the back support member.

By the way, in facilities such as theaters and auditoriums, users of various genders and ages are expected to have many users with reduced muscle strength in the hands and feet. In addition, these facilities generally have a structure in which the frontmost stage can be visually recognized preferably by using a sloped floor facing forward or a stepped floor that lowers toward the front. For this reason, for users with weakened limbs, for example, a handhold member is provided on the outermost chair in the row of chairs adjacent in the width direction of the facility, in other words, on the chair facing the aisle between the row of chairs. It is desirable that the

Patent Documents 2 and 3 describe a configuration in which a protruding member that protrudes outward from the corner of the upper portion of the backrest of a chair is provided, and a grip that forms a ring shape to serve as a hand is provided. By adopting such a configuration, the user is assisted in walking on the aisle by grasping the handholds (the above-mentioned protruding members and grips) provided on a part of the backrest.

Japanese Patent No. 4636873 Japanese Patent No. 3601952 JP 2014-031052 A

However, conventional chairs have the following problems.
That is, in a chair provided with a handhold as described above, the user grips the handhold and momentarily puts his or her weight on the chair, resulting in a state in which a large load is applied. In such a case, there is a possibility that the user sitting on the chair may feel a sense of discomfort due to the movement of shaking the chair due to the load.
Further, in facilities such as theaters and auditoriums, there are many situations in which a user moves in the width direction in the space on the back side of a chair while avoiding other users. In particular, in the case of a configuration having a ring-shaped handhold portion as disclosed in Patent Document 3, the user's baggage is caught by the ring-shaped handhold portion when moving in the width direction as described above, and the user's luggage is moved. There was a problem that the

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and provides a chair backrest that enables a person to safely approach a chair to be seated through a passage in a chair used in facilities such as theaters and auditoriums. intended to provide

In order to achieve the above object, a chair backrest according to the present invention is arranged on the front side in the depth direction of a chair, and includes a back support member that is in contact with the back of a seated person, and a back support member that is attached from the back side in the depth direction. a back plate member for supporting the back plate member, the back plate member having an upper side and a side side located outside the upper side in a width direction that intersects the depth direction of the chair; The end portion is characterized in that the height from the installation surface of the chair is higher than the other portion of the upper side.

In the present invention, since the outer peripheral edge of the back plate member has the first connecting side forming the flat surface inclined downward toward the outside, it is particularly adopted for chairs installed in facilities such as theaters and auditoriums. In this case, the flat surface formed on the first connecting side of the back plate member can function as a portion for temporarily placing the user's hand. Therefore, the load input from the user's hand acts in a direction orthogonal to the flat surface of the first connecting side. That is, for example, when a ring-shaped handle member is formed on the back plate member of the backrest of a chair, it is difficult to generate a force to shake the back plate member in the thickness direction, and it is possible to prevent the luggage of the user from being caught. can be prevented.
In this case, the overall shape of the chair is such that the corners of the upper side of the back plate member are curved, and the first connecting side forming the flat surface located on the outer peripheral edge of the corners is visible. By providing the characteristic, for example, it becomes easier for a user passing through a passage provided in the width direction of the chair to visually recognize the chair.

Further, in the chair backrest according to the present invention, it is preferable that the upper end of the side edge is arranged at a position lower than the outer edge of the upper edge.

Further, the chair backrest according to the present invention may be characterized in that the upper side is curved so as to be gradually upward from a horizontally extending horizontal portion toward the outer end portion.

Further, in the chair backrest according to the present invention, the upper side includes a horizontal side extending horizontally inside the outer end in the width direction, and an outer end of the horizontal side in the width direction. and a second connecting side that connects the upper side and the outer end of the upper side.

In this case, since the outer edge of the upper side is connected to the horizontal side through the second connecting side, it is possible to impart a greater visual feature to the outer peripheral edge of the back plate member. Therefore, there is an advantage that the first connecting side formed on the outer peripheral edge of the back plate member becomes more easily visible.

Further, in the chair backrest according to the present invention, it is preferable that the second connecting side is curved so as to protrude downward gradually from the outer end toward the horizontal side.

In this case, the second connecting side that connects the horizontal side of the upper side and the outer end portion has a curved shape, and the bent portion having a predetermined angle is not formed on the upper side. Therefore, especially when it is adopted as a chair installed in a theater or auditorium, after placing the hand on the first connecting side, when moving while moving the hand along the upper side, the impact applied to the hand should be reduced. can be used, and the movement of the user can be made more suitable.

Further, in the chair backrest according to the present invention, the back plate member has the upper side and the side side that protrude upward and to the side of the back support member, respectively, and the protruding upper side and the side side protrude upwardly and laterally. A corner portion may be provided with an outer edge portion of the upper side.

In this case, since the upper side and side sides of the back plate member protrude outward from the back support member, the back plate member can be easily visually recognized by the user, and the position of the outer edge of the upper side of the back plate member and It becomes possible to visually recognize the shape instantly.

Further, in the chair backrest according to the present invention, the upper surface of the backrest member is horizontal, and the outer edge of the upper side is positioned above the height of the upper surface of the backrest member. good.

Further, in the chair backrest according to the present invention, the chairs constitute a connected chair in which a plurality of chairs are arranged side by side in the width direction, and the outer ends of the upper sides are arranged on both sides of the connected chair in the width direction. It may be characterized by being arranged.

INDUSTRIAL APPLICABILITY According to the chair backrest of the present invention, a chair used in a facility such as a theater or a lecture hall can have a handle that enables a person to safely approach the chair to be seated through a passageway.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the whole structure of the connection chair which has several chairs by embodiment of this invention. It is the front view which looked at a part of connection chair shown in FIG. 1 from the front. It is the side view which cut|ruptured the part which looked at the connection chair arranged in the front-back direction from the left-right direction. FIG. 2 is a side cross-sectional view of the chair, omitting the upholstery of the seat and the backrest member. FIG. 4 is a vertical cross-sectional view showing the attachment structure of the leg and the side panel, showing a state in which the side panels are attached to both sides of the leg. FIG. 6 is a view showing a state before the side panel is attached to the leg in the longitudinal sectional view showing the attachment structure of the leg and the side panel shown in FIG. 5 ; FIG. 6 is a side view of the mounting structure of the leg portion and the side panel shown in FIG. 5 as viewed in the horizontal direction; FIG. 7 is a side view of the mounting structure of the leg portion and the side panel shown in FIG. 6 as viewed in the horizontal direction; FIG. 6 is an enlarged view of a main part of the mounting structure of the side panel shown in FIG. 5, where (a) is a diagram after mounting and (b) is a diagram before mounting; It is the side view which looked at the side panel from the inner surface side. FIG. 4 is a perspective view showing the configuration of an inclined member in the back plate member; It is a perspective view which shows the whole structure of the connection chair by a modification. Fig. 13 is a front view of a portion of the connecting chair shown in Fig. 12 as seen from the front;

BEST MODE FOR CARRYING OUT THE INVENTION A chair backrest according to an embodiment of the present invention will be described below with reference to the drawings.

A plurality of chairs 1 having a chair backrest according to the present embodiment shown in FIGS. Installed in an array. A plurality of chairs 1 (tripods in the figure) are arranged in the left-right direction X1, and these are integrally connected to form a connecting chair 1A, and the connecting chairs 1A are arranged side by side in the front-rear direction X2 and in the left-right direction X1. be done.

Here, the front-rear, left-right, and up-down directions in the following description are based on the seated person sitting on the seat body of the chair with his/her back facing the backrest. That is, the direction in which the seated person faces is "forward". Further, as described above, the left-right direction of the chair 1 (the width direction of the chair 1) is indicated by X1, and the front-rear direction (the depth direction of the chair 1) is indicated by X2.

Each chair 1 has a pair of legs 2 standing on a floor F spaced apart in the lateral direction X1 of the chair 1, a flip-up seat 3 arranged between the pair of legs 2, It is provided with a backrest part 4 which is a part on which a seated person leans on the seat part 3 with his/her back, and a pair of right and left armrest parts 5 for the seated person to put his/her elbows on. A plurality of chairs 1 arranged in the horizontal direction X1 are integrally fixed on the floor surface F by a pair of left and right legs 2,2.

As shown in FIG. 2, each leg 2 is made of a strength member such as a steel plate, and has a pair of side panels 20, 20 that stand perpendicular to the left-right direction X1 of the chair 1, spaced apart in the left-right direction X1. are arranged facing each other. That is, the leg portion 2 is combined with a side panel 20 having an armrest portion 5 on its upper portion.
Here, a floor fixing plate 21 is provided on the floor surface F at the lower end of the leg portion 2, and this floor fixing plate 21 is fixed to the floor surface F using, for example, anchor bolts (not shown). That is, the leg portion 2 is fixed to the floor surface F by penetrating the anchor bolts embedded in the floor surface F through the floor fixing plate 21 and screwing nuts onto the anchor bolts.

The seat portion 3 has a usage posture (indicated by reference numeral 3A in the figure) in which the seating surface 3a is substantially horizontal between the left and right leg portions 2 (side panels 20) adjacent to each other, and a seating surface 3a in which the front side thereof is displaced upward. , and is rotatable (can be flipped up) between the standing posture (indicated by the two-dot chain line symbol 3B in the figure), and is configured separately from the backrest portion 4 . The seat portion 3 has a seat cushion (not shown) forming a seating surface and a seat frame (not shown) supporting the seat cushion.

As shown in FIG. 2, the rear base end portion of the seat portion 3 in the use posture 3A is attached to a rotating shaft 31 fixed to the opposing surface of each of the left and right leg portions 2 (side panels 20). Supported.
The seat portion 3 rotates about the support shaft C1 of the rotation shaft 31 along the left-right direction X1 so as to vertically displace the tip portion on the front side in the usage posture 3A. For example, around the support shaft C1, an unillustrated biasing means (for example, an elastic member) is provided to bias the seat portion 3 so as to spring up from the usage posture 3A to the storage posture 3B.
Since the seat portion 3 is of a flip-up type (rotating type), as shown in FIGS. , the seat portion 3 is in any one or more of the usage posture 3A, the storage posture 3B, and an intermediate posture (posture during rotation) between the usage posture 3A and the storage posture 3B. , a gap S (see FIG. 1) is formed.

As shown in FIGS. 5 and 6, the leg portion 2 is formed by an upright plate 22 erected on the floor surface F and an upper flange 23 provided on the upper end 22b of the upright plate 22, as viewed in the front-rear direction X1. It is formed in a substantially T shape. As shown in FIGS. 7 and 8, the upright plate 22 has an inverted trapezoidal shape in a side view viewed from the left-right direction X2 at the upper part from the approximate center in the vertical direction, and side panels 20, 20 are attached on both left and right sides. It has a side plate attachment portion 2A that is attached. An armrest portion 5 made of wood or resin similar to the side panel 20 to be described later is fitted onto the upper flange 23 from above.

As shown in FIGS. 6, 8, and 9(a) and (b), a pair of rectangular first openings penetrating in the thickness direction are provided on the upper end side of the side plate mounting portion 2A of the leg portion 2. 24 (open recesses) are formed at intervals in the front-rear direction X2. Each of the first openings 24 has a recessed shape with an open upper end in the side plate mounting portion 2A.

As shown in FIGS. 9(a) and 9(b), the upper flange 23 has a shape projecting to both the left and right sides around the upper end 22b of the standing plate 22 when viewed in the front-rear direction X1. The portion of the upper flange 23 facing the first opening 24 of the upright plate 22 is opened toward the first opening 24 (downward) and extends in the longitudinal direction of the first opening 24 (front-rear direction). An opening groove 23a (opening) extending along X2) is formed. In this embodiment, the center of the opening groove 23a is aligned with the center of the standing plate 22, and the groove width D1 of the opening groove 23a is set smaller than the thickness dimension D2 of the standing plate 22. As shown in FIG.

As shown in FIGS. 8 and 10, the side panel 20 is made of, for example, a wooden (including veneer board or wood material) or resin decorative board, and has an inverted trapezoidal shape that is substantially the same as the side plate mounting portion 2A of the leg 2. , and is mounted so as to cover both the left and right sides of the side plate mounting portion 2A (see FIGS. 5 and 7). The side panel 20 is arranged so that the outer surface 20a is exposed to the outside and the inner surface 20b faces the outer peripheral surface of the side plate attachment portion 2A. At the upper end of the inner side surface 20b of the side panel 20, a flat plate-like engaging plate 25 (engaging protrusion ).

The engaging plate 25 is provided so that its upper portion protrudes above the upper end 22b of the side panel 20, and is fixed to the inner side surface 20b by a fixing means such as a screw with a steel member. As shown in FIG. 9B, the height dimension L1 of the engagement plate 25 corresponds to the dimension (reference symbol L2) obtained by combining the vertical dimension of the first opening 24 and the depth dimension of the opening groove 23a. do.
The thickness dimension of the engaging plate 25 is smaller than the groove width D1 of the opening groove 23a, and the engaging plates 25, 25 of the pair of left and right side panels 20, 20 are simultaneously fitted into the opening groove 23a. (that is, a dimension equal to or less than 1/2 of the groove width D1 of the opening groove 23a). Therefore, both of the engagement plates 25 provided on the pair of left and right side panels 20, 20 are fitted into the opening grooves 23a.

As shown in FIG. 9A, the engaging plate 25 is in a state in which the inner side surface 20b of the side panel 20 is in contact with the side plate mounting portion 2A of the standing plate 22, and the thickness direction of the first opening groove 23a ( It is formed at a position shifted outward in the thickness direction (corresponding to the left-right direction X1) of the standing plate 22 so as to restrict the fitting to the first opening groove 23a with respect to the opening edge 23b in the left-right direction X1. and in the state of fitting posture in which it is fitted in the first opening groove 23a, the inner surface of the first opening groove 23a is pressed by being biased in the direction away from the first opening groove 23a in the thickness direction. It's becoming That is, the engagement plate 25 is fitted into the first opening groove 23a with the inner side surface 20b of the side panel 20 in contact with the side plate mounting portion 2A, and the engagement plate 25 fitted into the first opening groove 23a is the second opening groove 23a. It is configured to be inserted inside one opening 24 and biased so as to press the inner surface of the first opening groove 23a.

As shown in FIGS. 8 and 10, the lower end portion of the side panel 20 is provided with a bolt insertion hole 20c penetrating in the thickness direction. is screwed into a female screw portion provided on the upright plate 22 by means of a screw.
At this time, the bolt is tightened in a direction opposite to the restoring direction of the engaging plate 25, and the side panel 20 is fixed to the standing plate 22. As shown in FIG.

The armrests 5 are installed on the outer side of the chair 1 as shown in FIG. As shown in FIG. 6, the armrest portion 5 has a shape elongated in the front-rear direction X2 and has a substantially rectangular shape when viewed from the front-rear direction X2. A recess 5a is formed. The armrest portion 5 is attached to the leg portion 2 by fitting the fitting recess 5a thereof to the upper flange 23 of the leg portion 2 from above. The depth dimension of the fitting recess 5a is set larger than the thickness dimension of the upper flange 23, so that the upper flange 23 is hidden from the outside when the armrest 5 is fitted to the upper flange 23. exposed.

As shown in FIGS. 1 and 3, the backrest portion 4 is arranged on the front side in the front-rear direction X2, and the back support member 40 that contacts the back of the seated person and the back support member 40 are positioned from the rear side in the front-rear direction X2. and a back plate member 6 as a supporting strength member.

The back support member 40 is detachably attached to the front surface 6a of the back plate member 6, as shown in FIGS. The backrest member 40 includes a backrest member 41 that forms a support surface (backrest surface 4a) for supporting the seating load of the seated person, and an outer peripheral member 42 that supports the backrest member 41 from behind. The backrest member 41 has a top portion that is convex forward at a position below the upper and lower intermediate portions of the backrest surface 4a so as to easily support the waist of the seated person from behind.

As shown in FIG. 4, the outer peripheral structural member 42 includes a pair of upholstery support portions (not shown) formed of plywood, pipes, wooden frames, or the like and supporting the outer peripheral edge of the backing material 41, and a pair of upholstery members. A connection opening (not shown) that connects the material supporting portion on the rear side along the input direction (front-rear direction X2) of the seating load relative to the backing material 41 and is movably supported by the back plate member 6. is doing. The backing material 41 is stretched between a pair of facing upholstery material support portions of the outer peripheral structural member 42 .
A plurality of hook-shaped connectors 43 are provided for one back support member 40 on the upper side of the front surface 6 a of the back plate member 6 . The back support member 40 is supported on the front surface 6 a of the back plate member 6 by hooking the connecting opening of the outer peripheral component member 42 to the connecting member 43 .

As shown in FIGS. 1 and 3, the back plate member 6 has the shape of a wooden flat plate along a plane inclined backward with respect to a vertical plane perpendicular to the front-rear direction X2, and has a rectangular shape elongated in the left-right direction X1 when viewed from the front. provided in The back plate member 6 is bolted to the leg 2 via a bracket (not shown) so as to shield the space between the pair of left and right legs 2 in the front-rear direction X2 of the chair 1. there is

The back plate member 6 is integrally provided so as to shield all of the plurality (three) of chairs 1 constituting the connecting chair 1A from the rear, and is provided between the chairs 1, 1, and each chair 1 The side panel 20 and the rear surface of the armrest 5 are arranged in an extended state until they are hidden (see FIG. 2). A lower end 61a of the back plate member 6 is separated from the floor surface F. As shown in FIG.

Further, as shown in FIG. 2, the back plate member 6 has an upper side 63 extending along the left-right direction X1, a side side 64 positioned outside the upper side 63 in the left-right direction X1, and a side side 64. A first connecting side 65 connecting the upper end 64a and the outer end 63a along the left-right direction X1 of the upper side 63 and forming a flat surface inclined downward toward the outer side on the outer peripheral edge of the back plate member 6; , is equipped with
Here, the upper edge 63 and the side edge 64 of the back plate member 6 protrude above and to the side of the back support member 40, respectively. The first connecting side 65 is provided at the corner between the upper side 63 and the side side 64 that protrudes from the back support member 40 .

The outer end portion 63a of the upper side 63 is higher than the other portion of the upper side 63 (the portion closer to the central portion in the left-right direction X1 than the outer end portion 63a of the upper side 63) from the floor surface F on which the chair 1 is installed. It is also highly positioned. In other words, the upper edge 63 of the connecting chair 1A as a whole consists of a horizontal edge 63A extending horizontally inside the lateral direction X1 from the outer edge 63a, an outer edge of the horizontal edge 63A in the lateral direction X2, and the upper edge 63. and a second connecting side 63B that connects the outer end 63a of the . The second connecting side 63B is gradually curved downward from the outer end 63a toward the horizontal side 63A. Therefore, in the present embodiment, the upper side 63 of the back plate member 6 is designed such that the entire connecting chair 1A curves upward from the center in the left-right direction X1 to both outer ends 63a, 63a (see FIG. 1). .

The flat surface portion of the first connecting side 65 may be provided with a thin plate-like non-slip member (not shown) made of, for example, rubber, plastic, or an elastically deformable plate material (elastic member). good. In this case, the flat portion of the first connecting side 65 of the back plate member 6 is provided with a non-slip member such as rubber that elastically deforms in the thickness direction, so that the user placed on the flat portion may It is possible to prevent the hand from slipping off the first connecting side 65 and losing the balance of the body, for example.

As shown in FIGS. 3 and 4, the back plate member 6 has a downwardly inclined surface 62b that is downwardly inclined toward the near side in a region between the facing surfaces of the pair of leg portions 2, 2 below the seat portion 3. A ramp member 62 is provided having a The inclined member 62 is made of, for example, a metal material or a resin material, is arranged in a region on the front side in the front-rear direction X2 with respect to the rear plate member 6, and is located in front of the lower end 61a of the rear plate member 6 in the front-rear direction X2. It slopes gradually towards and continuously downwards.

In addition, the inclined member 62 is configured as a separate part independent of the rear plate member 6, and has a connected portion 62d that can be connected to the rear plate member 6 at the upper end of the lower inclined surface 62b of the rear end portion in the front-rear direction X2. The connected portion 62d is detachably fixed to the front surface 6a of the back plate member 6 from the front side with a bolt or the like. Further, the inclined member 62 has free ends 62e (see FIGS. 2 and 11) that are not connected to the leg portion 2 at both ends thereof in the left-right direction X1. In the present embodiment, a gap extending along the front-rear direction X2 is formed between the inner surface of each of the pair of legs 2, 2 and both free ends 62e (both edges) of the inclined member 62. there is
The inclined member 62 is arranged so as to form a space R between the lower surface 62a and the floor surface F. As shown in FIG.

The inclination angle of the lower inclined surface 62b of the inclined member 62 is, for example, about 30° to 80° with respect to the floor surface. That is, as shown in FIG. 4, the downwardly inclined surface 62b forms a uniform inclined surface from the back plate member 6 to the front end portion 62c without a step. The downward inclined surface 62b is located below the gap S formed between the seat portion 3 and the backrest portion 4. As shown in FIG.

The front end portion 62c of the inclined member 62 is separated from the floor surface F by, for example, several mm to 20 mm.
In addition, the closed space R formed on the side of the lower surface 62a of the inclined member 62 is a triangular space in a side view that gradually increases toward the rear between the closed space R and the floor surface F. As shown in FIG.

Next, the operation of the chair 1 described above will be described in detail based on the drawings.
As shown in FIG. 1, in the present embodiment, the outer peripheral edge portion of the back plate member 6 of the backrest portion 4 has a first connecting side 65 forming a flat surface inclined downward toward the outside. In particular, when the chair 1 is installed in a facility such as a theater or auditorium, the user's hand (symbol H shown in FIG. ) can be made to function as a site for temporarily placing.
Therefore, the load input from the user's hand H acts in the direction (arrow P) perpendicular to the flat surface of the first connecting side 65 . That is, for example, when a ring-shaped handle member is formed on the back plate member of the backrest of a chair, the back plate member is less likely to be shaken in the thickness direction, and the user's luggage is not caught. can be prevented.

In the present embodiment, the outer edge 63a of the upper side 63 of the back plate member 6 is positioned higher than the other portion (horizontal side 63A) of the upper side 63 from the floor surface F on which the chair 1 is installed. Therefore, the overall shape of the chair 1 is such that the corners of the upper side 63 of the back plate member 6 are curved upward. In other words, by giving a visual characteristic to the first connecting side 65 forming a flat surface positioned at the outer peripheral edge portion of the corner, for example, a user passing through a passage provided in the left-right direction X1 of the chair can see the first connecting side 65. becomes easier.

Furthermore, in the present embodiment, the outer edge 63a of the upper side 63 is connected to the horizontal side 63A via the second connecting side 63B, so that the outer peripheral edge of the back plate member 6 has a greater visual feature. be able to. Therefore, there is an advantage that the first connecting side 65 formed on the outer peripheral edge of the back plate member 6 becomes easier to visually recognize.
Moreover, the second connecting side 63B that connects the horizontal side 63A of the upper side 63 and the outer end 63a is curved, and the upper side 63 is not bent at a predetermined angle. Therefore, especially when the chair 1 is installed in a theater or auditorium, after the hand H is placed on the first connecting side 65, when the hand H is moved along the upper side, the chair is attached to the hand H. The impact can be reduced, and the movement of the user can be made more suitable.

In addition, in this embodiment, the upper edge 63 and the side edge 64 of the back plate member 6 protrude outward from the back support member 40, so that the back plate member 6 can be easily seen by the user. It is possible to instantly visually recognize the position and shape of the first connecting side 65 formed on the outer peripheral edge.

As described above, the chair backrest according to the present embodiment has a clue that enables a person to safely approach the chair 1 to be seated through the passage in the chair 1 used in facilities such as theaters and auditoriums. be able to.

Although the embodiments of the furniture according to the present invention have been described above, the present invention is not limited to the above embodiments, and can be appropriately modified without departing from the scope of the invention.

For example, in a connecting chair 1B according to a modified example shown in FIGS. 1 to the side edge 64 side has a projecting portion 64A. In the connecting chair 1B in this case, the configuration of each chair 1 described above, that is, the shape of the back plate member 6 of the backrest portion 4 can also be configured in the same manner. That is, by arranging the connecting chair 1A of the embodiment described above and the connecting chair 1B according to the modification in the front-rear direction X2, the chairs 1 are arranged alternately in the left-right direction X1 between the front and back connecting chairs 1A and 1B. Because it is located in the position, it can be arranged so that the front is not hidden by the head of the seated person in front. By providing the large overhanging portion 64A on the back plate member 6 of the connecting chair 1B, the positions of the sides 64 of the connecting chair 1A without the large overhanging portion 64A arranged in the front and rear can be aligned, and the connecting chair 1A can be arranged. , 1B can be constant.

Moreover, in the present embodiment, the back plate member 6 is used as a strength member because a load is input to the connecting surface, but the present invention is not limited to this. For example, in the case of a structure in which there is a highly rigid inner shell in front, the rear plate member may be a simple cover.

In addition, it is possible to appropriately replace the components in the above-described embodiments with well-known components without departing from the scope of the present invention.

1 Chair 2 Leg 3 Seat 3A Use posture 3B Storage posture 4 Backrest 5 Armrest 6 Rear plate member 20 Side panel 22 Standing plate 63 Upper side 63a Outer end 63A Horizontal side 63B Second connecting side 64 Side 65 Second One connecting side 66 Upper back surface F Floor surface (installation surface)
R Closed space X1 Left-right direction (width direction)
X2 Front-back direction (depth direction)

Claims (8)

a backrest member disposed on the front side of the chair in the depth direction and in contact with the back of the seated person;
a back plate member that supports the back support member from the back side in the depth direction,
The back plate member is
top and
a side edge located outside the upper edge in the width direction that intersects the depth direction of the chair;
A chair backrest, wherein the outer edge of the upper side is positioned higher than the rest of the upper side from the installation surface of the chair. 2. The chair backrest according to claim 1, wherein the upper edges of said side edges are positioned lower than the outer edges of said upper edges. 3. The chair backrest according to claim 1 or 2, wherein the upper side is curved so as to be gradually upward from a horizontally extending horizontal portion toward the outer end portion. The upper side is
a horizontal side extending horizontally inside the outer end in the width direction;
a second connecting side connecting the outer end of the horizontal side in the width direction and the outer end of the upper side;
4. A chair backrest according to any one of claims 1 to 3, characterized in that it comprises: 5. The chair backrest according to claim 4, wherein the second connecting side is gradually curved downward from the outer end toward the horizontal side. the back plate member has the upper edge and the side edge that protrude upward and laterally from the back support member, respectively;
6. The chair backrest according to any one of claims 1 to 5, wherein an outer edge of the upper side is provided at a corner between the protruding upper side and side side. The upper surface of the back support member is horizontal,
The chair backrest according to any one of claims 1 to 6, wherein the outer edge of the upper side is located above the height of the upper surface of the backrest member. The chair constitutes a connected chair in which a plurality of chairs are connected side by side in the width direction,
The chair backrest according to any one of claims 1 to 7, wherein the outer ends of the upper side are arranged on both sides of the connecting chair in the width direction.

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