JP2012135488A - Chair with backrest - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pull portion in a backrest in a state of preventing design unity from being damaged.SOLUTION: The backrest 3 is made up of principal elements including a backplate 10 and a back support 11. An overhanging portion 3a projecting rearward is formed in the upper portion of the backrest 3. The backplate 10 is split into a main member 14 and a top member 15 and the back support 11 is arranged behind the main member 14. A rearward overhanging portion 65 is formed in the upper end of the back support 11, and is provided with pull holes 68 opened downward. The overhanging portion 65 of the back support 11 is covered with the rear wall 80 of the top member 15.

Description

  The present invention relates to a chair provided with a handle function on a backrest.

  When a person pulls and moves a chair by hand, he or she pulls with his hand on the top of the backrest. In general, the upper end of the backrest is grasped by hand and pulled. However, if the skin material is stretched on the backrest, the skin material may become dirty while the hand is repeatedly applied to the upper end of the backrest.

  On the other hand, it has been proposed or proposed to provide a handle at the upper end of the backrest. As an example, Patent Document 1 discloses that a handle made of a horizontally long bar is attached to the back of a backrest. In addition, as disclosed in FIG. 8 of Patent Document 1, a handle hole having front and rear openings is formed at the upper end of the back plate.

JP 2006-136570 A

  The configuration of Patent Document 1 has no problem in terms of the pulling function, and is a separate member from the backrest. Therefore, there is no problem of contamination even if a skin material is stretched on the surface of the backrest. However, since the handle is attached in a state of protruding from the back of the backrest, there is a possibility that it may give a person a sense of incongruity, and it cannot always be said that the aesthetic sense is excellent.

  This invention makes it a subject to improve such a present condition.

  In order to solve the above-mentioned problem, the chair according to the first aspect of the present invention opens a pulling hole in the upper part of the back part of the backrest so that a person can insert a hand from below without opening in the front-rear direction and upward. Provided. In addition, in the structure of this Claim 1, the handle hole may open only below, and may open below and the left-right direction.

According to a second aspect of the present invention, in the first aspect of the present invention, an overhang portion protruding rearward is formed on the upper portion of the backrest so as to extend substantially over the entire length, and the handle hole is provided in the overhang portion. .
ing.

  According to a third aspect of the present invention, in the second aspect, the backrest includes a back plate and a back support to which the backrest is attached, and an overhang portion protruding rearward is formed on an upper end portion of the back support. A handle hole is provided, and an overhang portion of the back support is covered from behind by a rear wall portion provided on the back plate.

  Since the handle hole of the present invention opens downward and does not open in the front-rear direction and upward, the handle hole does not stand out and does not give the person a sense of incongruity. That is, the handle hole can be provided in a state of being melted into the design, and therefore, the backrest can be excellent in aesthetics. In addition, since the inner surface of the handle hole is not touched by human eyes, even if the handle hole becomes dirty, the aesthetics do not deteriorate. Therefore, it is suitable for the backrest with the skin material.

  It is preferable to form an overhang portion on the back surface of the backrest as in claim 2 and to provide a handle hole in the overhang portion because the entire backrest can be prevented from becoming thick. Further, when an overhang portion is formed in the back support and a handle hole is provided in the back support as in claim 3, the back support is a strength member and has a strong structure, and thus has excellent strength. Therefore, for example, it is possible to lift the chair by placing a hand on the handle hole.

  Further, in claim 3, since the overhang portion of the back support 11 is covered from behind by the rear wall portion of the back plate, the aesthetics deteriorate due to the formation of the overhang portion on the back support. No problem.

It is the external view of a chair, (A) is the perspective view seen from the front, (B) is the perspective view seen from back, (C) is a side view. It is a separation perspective view of a chair. It is the external view of the backrest in the state which abbreviate | omitted the cushion, (A) is the perspective view seen from the front, (B) is a side view, (C) is the perspective view seen from back. (A) is the perspective view which looked at the back part of the backrest from the lower part, (B) is the separation side view of the backrest. It is the isolation | separation perspective view which looked at the backrest from back. It is the isolation | separation perspective view which isolate | separated the component of the backrest and was seen from the back. It is a separation perspective view of a backrest. It is the front view which turned the main member over and arranged with the back support. (A) is a separated perspective view of the main member and the back support, (B) is a partial perspective view of the lower part of the back support, and (C) is a partial perspective view of the lower part of the main member. (A) is a partial rear view of the main member, (B) is a partial perspective view of the main member as seen from the rear, (C) is a partial front view of the end of the cushion, and (D) is a plan view showing how the cushion is attached. It is sectional drawing. (A) is a partial front view of the back support, (B) is a partial perspective view of the back support as seen from the front, (C) is a partial front view of the end portion of the back seat, and (D) is an attachment mode of the back seat. FIG. (A) (B) is the isolation | separation perspective view of the principal part. (A) is the isolation | separation figure which cut | disconnected the backrest in the left-right center part, (B) is a perspective view of a coupling. (A) is a sectional side view of the backrest at the left and right center, (B) is a perspective view of the side end of the top member, and (B) is a bottom view of the side end of the top member.

  Next, an embodiment of the present invention will be described with reference to the drawings. This embodiment is applied to a rotary rocking chair that is frequently used for office work. In this application, the words “front and rear” and “left and right” are used to specify the direction, which is based on the direction of a person seated in a normal posture. The front view is in the direction facing the seated person.

(1). Outline of Chair First, an outline of a chair will be described with reference mainly to FIGS. As shown in FIG. 1, the chair includes a leg 1, a seat 2, and a backrest 3 as major elements. Although the leg 1 has branch legs extending in the radial direction, the illustration is omitted, and only the leg support 4 made of a gas cylinder is shown. Although not shown, a caster is provided at the tip of each branch leg constituting the leg 1, so that the chair can be easily pushed and pulled. A base 5 is fixed to the upper end of the leg column 4, and a seat 2 is disposed above the base 5.

  As shown in FIG. 2, the seat 2 comprises a resin-made seat inner shell (seat plate) 6 and a seat cushion 7 stretched on the upper surface thereof, and the front and rear positions of the intermediate support 8 shown in FIG. 2 can be adjusted. Installed. The front portion of the intermediate support 8 is connected to the front portion of the base 5 via the front link 9, and the front link 9 rotates relative to both the base 5 and the intermediate support 8 in a side view. Therefore, when the front link 9 rotates, the intermediate support 8 and the seat 2 move back and forth while moving up and down.

  The backrest 3 has a shawl-like back plate (back inner shell) 10 to which the body pressure of the seated person is applied, and a shell-like back support (back outer shell) 11 to which the back is attached. The back cushion 12 is stretched. The back cushion 12 is covered with a skin material 13 such as a cloth from the front. As clearly shown in FIG. 2, the back plate 10 is composed of two members (parts) including a main member 14 disposed in front of the back support 11 and a top member 15 disposed thereon. . Both members 14 and 15 are injection molded products made of resin.

  An overhang portion 3a protruding rearward is formed at the upper end portion of the backrest 3 over the entire length of the left and right. For this reason, in the backrest 3, the portion of the overhang portion 3a is thicker than the portion below it. In the present embodiment, the main member 14 occupies most of the backrest 3, and the top member 15 constitutes the upper portion of the backrest 3.

  The front surface of the main member 14 and the front surface of the top member 15 are smoothly continuous. Accordingly, the seated person can hang on without feeling discomfort, like the backrest of the monolithic structure. The top member 15 of the present embodiment has a shape that bends backward and makes a U-turn downward, and thus has a side-view configuration that is approximately close to a downward opening U-shape.

  The upper end of the main member 14 and the upper end of the back support 11 in the back plate 10 are substantially the same height, and the top member 15 of the back plate 10 overlaps the upper surface of the back support 11. The top member 15 of the back plate 10 is overhanging so as to go around the upper back of the back support 11.

  As clearly shown in FIG. 3, a pair of left and right arms 16 extending forward are integrally formed at the lower end of the back support 11, and the left and right arms 16 are connected by a gate-shaped joint 17. The left and right arms 16 are connected to the base 5 so as to tilt backward about the front end thereof, and the left and right arms 16 are slightly exposed in the metal fitting 18 (FIG. 1B). ) To the rear part of the intermediate support 8. For this reason, when the backrest 3 is tilted backward, the intermediate support 8 (seat 2) is pulled by the metal fitting 18 and moves upward while retracting. An elastic body that provides resistance to rocking is disposed at the rear of the base 5.

  The lower end portion of the back support 11 projects downward from the base of the arm 16. A lower cover 19 is attached to the lower back surface of the back support 11. The back support 11 is covered with a back sheet 20 from behind, and the lower cover 19 is also covered with the back sheet 11. The arm 16 can be configured as a separate member from the back support 11. As shown in FIG. 1 (A), the upper portion of the skin material 13 is pulled and held rearward by a horizontally-long horizontally drawn portion 21.

(2). Main member Details of the backrest 3 will be explained below. First, the main member 14 and the back support 11 will be described with reference to FIGS. As clearly shown in FIG. 8, the back support 11 and the main member 14 have a lower width at the lower end that is smaller than the width at the upper end. For example, as clearly shown in FIG. 7 (B), the back support 11 and the main member 14 are both curved with a gentle curvature in a forward-facing concave shape in plan view, and both of them are portions where the waist of the seated person hits. It is curved in a forward convex shape in a side view so as to be located at the forefront.

  For example, as shown in FIG. 2, square side ridges 23 projecting forward are formed on the left and right sides of the main member 14, and square bottom ridges 24 projecting forward are also formed on the lower end of the main member 14. Has been. Both protrusions 23 and 24 are continuous with each other. Both ridges 23 and 24 are opened rearward to form a channel shape.

  For example, as shown in FIG. 10 (D), the back cushion 12 is arranged inside the side ridge 23 and the bottom ridge 24 in the eye 4, so that the side ridge 23 and the bottom ridge 24 have a reinforcing function. And the positioning function of the back cushion 12. A skin material 13 covering the back cushion 12 is wound behind the main member 14, and an edge of the skin material 13 is hidden by the back support 11.

  A band plate-like edge plate 25 such as a resin plate is fixed to the edge of the skin material 13 by means such as sewing or adhesion, while the protrusions 23 and 24 of the back surface of the main member 14 are fixed. A number of catch projections 26 are formed at appropriate intervals on the part located slightly inside, and catch holes 27 formed in the edge plate 25 are fitted into the catch projections 26. Note that the edge plate 25 is sewn on the entire surface of the skin material 13 so that the skin material 13 is folded back at the sewing portion.

(3) Back support For example, as shown in FIGS. 7 and 8, the left and right side edges of the back support 11 are side walls 11 'projecting substantially forward, and the main member is located below the back support 11. The left and right horizontally-lowered lower ribs 30 located behind the bottom protrusion 24 in FIG. A number of reinforcing ribs are connected to the lower surface of the lower rib 30. As shown in FIG. 10D, the side wall 11 ′ of the back support 11 is located behind the side protrusion 23 in the main member 14.

  On the front surface of the back support 11, a pair of left and right inner vertical ribs 31 and outer vertical ribs 32 that are continuous with the arm 16 protrude forward, and the lower rib 30 is connected to the inner vertical rib 31. The upper ends of the left and right outer vertical ribs 32 are continuous via the upper horizontal rib 33, and the upper ends of the left and right inner vertical ribs 31 are continuous via the lower horizontal rib 34. The lower horizontal rib 34 is also continuous with the left and right outer vertical ribs 32.

  These ribs 30 to 34 have a reinforcing function and also serve as a stopper that regulates the deformation amount when the back plate 10 is deformed so as to be recessed backward by the body pressure of the seated person. The inner and outer vertical ribs 31 and 32 also function to attach the back plate 10 (this will be described later).

  As described above, the back support 11 is covered with the back sheet 20 from behind. As shown in FIGS. 11C and 11D, a band edge plate 35 such as a resin plate is also fixed to the periphery of the back sheet 20 by sewing or the like, and on the left and right sides of the front surface of the back support 11. Catch projections 36 are provided so as to project forward at appropriate intervals in the vertical direction, and catch holes 37 formed in the edge plate 35 are fitted into the catch projections 36. The catch projection 36 is formed with a bulging portion 36a for preventing the catch projection 36 from coming off.

(4). Means for attaching the back plate to the back support The back plate 10 can be easily attached to and detached from the back support 11. This point will be described mainly with reference to FIG. The main member 14 needs to be held by the back support 11 so that it cannot be displaced from side to side. Therefore, substantially square positioning projections 42 and 43 are provided to project rearward on both the left and right side portions and the lower portion of the main member 14, and the upper positioning projection 42 is interposed between a pair of left and right upper clamping bodies 44 provided on the back support 11. The lower positioning protrusion 43 is fitted between the inner and outer vertical ribs 31 and 32 in the back support 11.

  Further, as a means for holding the main member 14 so as not to move forward, an upper engagement body 45 is provided on the outer side of the upper positioning projection 42 of the main member 14 so as to protrude rearward, and the top end of the upper engagement body 45 is viewed in plan view. An inclined upper engagement claw 46 is integrally provided, and an upper engagement receiving portion 47 having an L shape in plan view on which the upper engagement claw 46 is caught is formed on the front surface of the back support 11. The upper engagement receiving portion 47 is provided with a bottom plate 47a for reinforcement.

  The upper engaging claw 46 has a fin-like shape that is inclined in a plan view so that the upper engaging claw 46 is shifted to the left and right as it comes closer to the main member 14. Therefore, the tip of the upper engaging claw 46 can be bent and deformed so as to approach the upper engaging member 45. (It can constrict and deform against elasticity.) Then, the tip of the upper engaging claw 46 comes into contact with the upper engaging receiving portion 47 from the rear while the main member 14 is held so as not to move left and right.

  A lower engagement body 48 protrudes rearward from a lower end portion of the rear surface of the main member 14 below the lower positioning projection 43, and a pair of left and right lower engagements inclined in a plan view is provided on the lower engagement body 48. The claw 49 is provided integrally. The left and right lower engaging claws 49 are in the shape of fins (tongues), and both of them are inclined so that the distance between them increases toward the front. That is, the lower engagement body 48 and the left and right lower engagement claws 49 form an arrow shape. Similarly to the upper and lower engaging claws 46, the lower engaging claws 49 can be bent and deformed against elasticity so as to rotate around the base.

  The lower engagement body 48 of the main member 14 enters a groove between the inner and outer longitudinal ribs 31 and 32 in the back support 11. A pair of left and right lower engagement receiving portions 50 with which the lower engagement claws 49 abut on the rear side are formed on the inner and outer vertical ribs 31 and 32 so as to face each other.

  The upper and lower engaging claws 46 and 49 are basically engaged with the engagement receiving portions 47 and 50 by shifting the back plate 10 from above. However, depending on the case, there is a case where either one or both of the upper and lower engaging claws 46 and 49 do not fit into the engagement receiving portions 47 and 50 even if they are shifted from above. In this case, as shown by an arrow A in FIG. 10, the main member 14 can be engaged with the engagement receiving portions 47 and 50 by pressing backward against the back support 11. In this case, the engagement claws 46 and 49 are elastically deformed and hooked on the engagement receiving portions 47 and 50.

  The main member 14 is also held at the upper end of the main member 14 so that it cannot move left and right and cannot move downward relative to the back support 11. That is, a rear-facing upper-end protrusion 53 and an upper frame portion 54 of an upper and lower opening continuous with the upper-end protrusion 53 are provided to project rearward from the upper end of the main member 14 toward the left and right ends. The upper end recessed portion 55 into which the upper end protrusion 53 is fitted and the male receiving portion 58 to be fitted into the upper frame portion 54 from below are formed. The lower part of the male receiving part 58 is an inner frame part 56 opened in the front and rear direction.

  The upper surface of the upper end protrusion 53 is an upper flange 63, and the upper portion of the upper end recess 55 in the back support 11 is an upper step portion 55a where the upper flange 63 overlaps from the front. Further, the upper frame portion 54 of the main member 14 has left and right horizontally long front and rear bar portions 54a and 54b, and a male receiving portion 58 is positioned between them (see FIG. 17). The inner frame portion 56 has left and right side plates 57, an upper plate 58, and a lower surface 59, and has a rectangular shape that is long in the vertical direction.

  An upper engaging claw 60 as an example of an engaging means for holding the top member 15 so as not to move upward is formed in a portion of the main member 14 directly below the upper frame portion 54. The upper engaging claw 60 can be rotated back and forth around its lower end by being deformed against elasticity. On the other hand, a laterally long support shaft 61 is integrally formed in a part of the inner portion of the back support 11 that is slightly above the middle position in the vertical direction, and this support shaft 61 has, for example, FIG. Further, a lever 62 shown in FIG. 18 is rotatably attached.

  The top member 15 is held so as not to move upward by the upper engagement claw 60, and the lever 62 can be turned to release the engagement of the upper engagement claw 60 with the top member 15. Since this point is not directly related to the present invention, a description thereof will be omitted.

  For example, as shown in FIG. 14, a bowl-shaped upper flange 63 protruding rearward is formed at the upper end of the main member 14. The upper frame portion 54 is formed to be continuous with the upper flange 63. On the other hand, for example, as shown in FIG. 10A, an upper flange 64 is also formed at the upper end of the back support 11, and the upper end of the inner frame portion 56 slightly protrudes from the upper flange 64.

  For example, as shown in FIG. 6, a rearward projecting portion 65 is formed between the left and right inner frame portions 56 in the upper portion of the back support 11. The rearward protrusion 65 has a back plate 66 continuous with the upper flange 64 and a bottom plate 67 continuous with the back plate 66 and the substrate of the back support 11, and as shown in FIG. Is provided with a handle hole 68 through which a person can insert his / her hand.

  For this reason, the person can put the hand on the rearward projecting portion 65 of the back support 11 and move the chair by pulling it or pulling it. Since the back support 11 is a strong member having a robust structure, for example, even if a person inserts a hand into the handle hole 68 and lifts the chair, there is no problem in strength. When the chair is moved, the upper surface portion of the backrest is often grasped by hand. In this case, there is a problem that the upper surface of the backrest is soiled if repeated. On the other hand, if the handle hole 68 is provided as in this embodiment, the upper surface of the backrest can be prevented from being stained.

(5) Top Member Structure and Relationship with Main Member Next, the top member 15 and its mounting structure will be briefly described with reference to FIGS. 13 and 14 in addition to the previous drawings. For example, as can be understood from FIG. 12, the back support 11 has an overlapping surface 71 that opposes the upper flange 63 of the main member 14 and the upper flange 64 of the back support 11. A first downward projection 72 is provided at both ends, and the first downward projection 72 is fitted into a positioning hole 73 formed in the upper flange 63 of the main member 14.

  In the present embodiment, the upper surface of the main member 14 and the upper surface of the back support 11 are substantially the same height, and the top member 15 overlaps both. Although the top members 15 having different heights can be connected to one main member 14, the top member 15 overlaps the back support 11 regardless of the height, so that the backrest 3 is secured while ensuring design uniformity. The height of the can be changed.

  For example, as shown in FIGS. 12 and 13, a guide rib 74 is provided in a portion of the top member 15 that is slightly inside the first downward projection 72. The front surface of the guide rib 74 is inclined so as to be shifted toward the front as it goes upward. When the back plate 10 is attached, the guide rib 74 contacts the male receiving portion 58 of the back support 7 from above, so that the back plate 10 is Backward movement is guided so as to overlap the back support 7.

  As shown in FIG. 12, a top ridge 75 that is continuous with the side ridge 23 of the main member 14 is formed on the left and right sides of the top member 15, and a second downward projection 76 is formed at the lower end of the top ridge 75. Is provided. On the other hand, the upper end portion of the side protrusion 23 in the main member 14 is a cylindrical portion 77 that opens upward, and a second downward projection 76 is fitted into the cylindrical portion 77. It should be noted that the relationship between the protrusion and the cylindrical portion may be reversed, or may be connected by a joint of another member.

  The left and right ends of the overlapping surface 71 of the top member 15 are notched. Therefore, lateral side recesses 78 extending to near the upper end are opened on the left and right sides of the top member 15. Then, vertically elongated plugs 79 inserted and attached to the left and right ends of the back support 11 are fitted in the side recesses 78 of the top member 15.

  For example, as shown in FIG. 10A, groove-shaped ear portions 11a that open forward are formed at the left and right ends of the back support 11, and the dovetail groove 11b formed in the ear portion 11a has a plug 79. A foot 79a (see FIG. 13B) is fitted. A rear-facing claw 79b is formed at the lower end of the foot 79a of the plug 79. On the other hand, the claw 79b of the plug 79 is hooked from below on the ear portion of the back support 11, as shown in FIG. A matching claw catch 11c is projected forward.

  In the top member 15 above the overlapping surface 71, a number of vacant spaces for the forward opening and a vacant space for the rear opening are formed in order to reduce the weight and reduce the amount of resin used. A considerable portion of the top member 15 is overhanging behind the back support 11, and a rear wall 80 is formed at the rear end of the top member 15 to cover the rearward protruding portion 65 of the back support 11 from behind. .

  Accordingly, the overhang portion 3 a of the top member 15 (or the back plate 10) is formed with the rear wall 80 as a main element, and the overhang portion 3 a of the backrest 3 is constituted by the top member 15. The top ridge 75 extends to the lower end of the rear wall 80, and a back ridge 81 continuous with the top ridge 75 is formed at the lower end of the rear wall 80.

  The back cushion 12 extends upward from the main member 14 and also covers the top member 15. Accordingly, as shown in FIG. 14A, the back cushion 12 extends to the back protrusion 81 of the top member 15. The skin material 13 is wound up to the inner surface of the rear wall 80, and the edge plate 25 is fitted to the catch protrusion 26. As can be understood from FIGS. 14B and 14C, the skin material 13 also enters the inside of the side recess 78 of the top member 15, and the edge plate is attached to the catch projection 26 provided on the inner wall 78 a of the side recess 78. 25 is fitted. For this reason, the skin material 13 is held in a stretched state on the outer side of the recess 78.

  As shown in FIGS. 13 (A) and 14 (A), the first downward projection 72 has a tapered shape that is tapered in a side view, while the positioning hole 73 of the main member 14 is upward in a side view. Thus, the first downward projection 72 is smoothly drawn into the positioning hole 73. The first downward projection 72 forms an engagement claw 82, and an auxiliary engagement hole 83 is formed on the back surface of the positioning hole 73. The engagement claw 82 protrudes backward in the first downward projection 72 at the left and right intermediate portions, and the engagement claw 82 protrudes forward in the first downward projection 72 on the left and right sides.

  Since these engagement claws 82 are fitted in the auxiliary engagement holes 83, the top member 15 is held so as not to be separated upward with respect to the main member 14. The engagement claw 82 can be released from the engagement with the auxiliary engagement hole 83 by pushing the engagement claw 82 with a minus driver or the like.

(6). Others The present invention can be embodied in various ways other than the above embodiment. For example, the application target is not limited to a swivel chair, and can be applied to various chairs such as a pipe chair. Moreover, it cannot be overemphasized that it is applicable also to the chair whose backrest does not rock. In the embodiment, the back plate is separated from the main member and the top member, but it goes without saying that the back plate may have an integral structure.

  When the back support is provided on the back support as in the embodiment, the back support protrusion of the back support can be formed so as to extend over substantially the entire length on the left and right. It is also possible to form the back plate so as to overlap only the front surface of the back support, and cover the front surface of the back plate and the rearward protruding portion (overhang portion) of the back support in series with the skin material. Furthermore, it is possible to make the back plate function as a strength member without using a back support (in this case, an overhang portion may be formed on the upper end portion of the back plate and a handle hole may be provided on the lower surface thereof. .)

  Moreover, the handle hole may be opened in both the downward direction and the left-right direction. In other words, it is also possible to provide an overhang portion protruding downward on the upper portion of the backrest, and to use this overhang portion as a handle.

  The present invention is useful when applied to a chair. Therefore, it can be used industrially.

2 seats 3 backrest 3a backrest overhang portion 10 back plate 11 back support 12 back cushion 13 skin material 14 main member constituting back plate 15 top member constituting back plate 65 rearward projecting portion of back support 66 back support rearward direction Back plate constituting the projecting portion 67 Bottom plate constituting the rearward projecting portion of the back support 68 Handle hole 80 Rear wall constituting the overhang portion of the top member

Claims (3)

In the upper part of the back part of the backrest, a pulling hole through which a person can insert a hand from below is provided so as to open downward without opening in the front-rear direction and upward,
Chair with backrest. The upper part of the backrest is formed so that an overhang portion protruding backward extends substantially over the entire length, and the handle hole is provided in the overhang portion.
A chair with a backrest according to claim 1. The backrest has a back plate and a back support to which the back plate is attached, an overhang portion protruding backward is formed at an upper end portion of the back support, the handle hole is provided in the overhang portion, and the back support is overloaded The hang part is covered from behind by the rear wall part provided on the back plate,
A chair with a backrest according to claim 2.

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