JP6490378B2 - Chair - Google Patents

Description

  The present invention relates to a sofa-type (or bench-type) chair often installed in, for example, a lobby or a waiting room of various facilities, and more particularly to a sofa-type chair that can be easily assembled.

  In a sofa-type chair, Patent Document 1 filed by the applicant of the present application includes a backrest in a configuration in which a plate-shaped seat frame is supported by left and right leg members, and a seat body and a backrest are supported by the seat frame. After the seat is positioned behind the set position without attaching the seat body, the seat body is held in an immovable state by moving it forward and overlaid on the seat frame, and then the backrest is attached to the seat frame, The structure which hold | maintains a seat body so that it cannot move backward by the backrest is disclosed.

  In Patent Document 1, while a plurality of left and right rods project downward from the lower end surface of the backrest, the seat frame is provided with a plurality of left and right cylinders into which the rods are fitted. By holding the body, the backrest is held incapable of falling down.

JP-A-10-179321

  Although the thing of patent document 1 is excellent in the ease of an assembly, when this inventor researched, the room for improvement was still seen. For example, in Patent Document 1, since the moment (load) when leaning against the backrest acts on the rod body and the cylinder body in a concentrated manner, the support strength of the backrest is limited.

Further, in Patent Document 1, since the plurality of seats and the backrests are arranged with a slight interval, the upper surface of the seat frame is a solid that spreads between adjacent seats without the seats attached. On the other hand, the seat body is held immovably upward with respect to the seat frame by fitting a hook-shaped locking piece provided on the lower surface thereof into a hole provided in the seat frame. When attaching the seat to the seat frame, the locking piece and the hole are hidden behind the seat and cannot be seen. When attaching the backrest, the alignment of the rod and the cylinder was troublesome.

  The present invention has been made in view of such a situation, and while following the idea of Patent Document 1 that prevents the seat body from moving backward with a backrest, it is intended to improve the ease of assembly, increase the strength, and the like. It is aimed.

The chair of the present invention is
“It is equipped with a seat and a back, and a frame that supports them.
The underframe has a basic structure in which a horizontal posture base plate is supported by left and right leg plates in a vertical posture,
On the rear surface of the base plate, a rear frame plate in a substantially vertical posture extending over the entire length of the base plate is disposed,
The rear frame plate is fixed to the base plate or the leg plate or both, and the rear frame plate is provided with an upward standing portion that supports a backward load acting on the backrest,
The seat body has a structure in which a cushion is stretched on a seat plate that overlaps the base plate from above, and the backrest has a structure in which a cushion is stretched on the front surface of the back plate that overlaps the front surface of the upright portion,
When attaching the backrest to the base plate from the mounting said seat body to the upper surface of the base plate, the backrest seat body becomes stopper is held irremovably on the base plate "
This is the basic configuration.

In claim 1, in the basic configuration,
“ When the backrest is not attached to the seat plate and the base plate, the seat plate is placed on the base plate and shifted to the front, so that they fit together and hold the seat body in the set position so that it cannot move upward and forward. A first engagement means is provided,
The upright portion of the rear frame plate has a left and right width smaller than that of the back plate and a height lower than the height of the back plate, and the recess into which the upright portion fits into the back plate. Forming
Furthermore, when the back plate overlaps the front surface of the upright portion and moves downward in the recess of the back plate and the upright portion of the rear frame plate , the back plate fits to each other and holds the back plate immovable forward. Engagement means are provided, and therefore the upper end of the upright is higher than the second engagement means. ''
It is the composition.

The present invention can be developed in various ways. For example, in claim 2, in claim 1,
“A plurality of seats and a backrest are provided, and a partitioning part that can be used as a luggage storage part or an armrest is formed between adjacent seats so as to protrude from the base plate. The left or right position of the seat body is regulated by the body or the adjacent partition part. ''
It is the composition.

Moreover, in invention of Claim 3, in Claim 1 or 2,
“While the lower end of the backrest is composed of a lower surface plate, the rear portion of the seat plate has a rearward extension portion on which the backrest rests from above, and a rear surface plate on which the lower surface plate of the backrest abuts or approaches from the rear. Is provided. "
It is the composition.

In the present invention, since the backrest is supported from behind by the upright portion of the rear frame plate, the load when the user leans against the backrest is accurately supported by the upright portion. For this reason, the support strength of the backrest can be remarkably improved. Moreover, since the rear frame plate that forms the upright part has the same horizontal length as the base plate in a vertical posture, the underframe has a robust structure that exhibits high resistance to lateral force and torsion. Therefore, the chair as a whole has a sturdy structure.

  Further, since the recess of the back plate is fitted into the upright portion, when the back plate is attached to the upright portion, the upright portion itself becomes a guide, and the fitting of the second engagement means can be performed smoothly. Thereby, the assembly property of a chair can also be improved.

  If the structure of Claim 2 is employ | adopted, when attaching a seat to a base board, since a partition part functions as a guide body which regulates the right-and-left position of a seat, fitting of the 1st engagement means can be performed easily. Therefore, the assembly of the chair becomes even smoother.

If the structure of Claim 3 is employ | adopted, since the backrest has mounted in the backward extension part of a seat board, the integration of a seat body and a backrest increases and it can prevent the shift | offset | difference of a seat body exactly. That is, when the user leaning on the backrest, for backward extension of the seat plate is pushed downward in the backrest is in the stability of the seat plate is very high, Therefore, yet the chair can be easily assembled Therefore, it is possible to secure high quality by eliminating backlash and displacement of the seat.

  In addition, since the lower back plate of the backrest is located behind the rear plate of the seat body, the fall of the backrest is prevented by the rear face plate of the seat body hitting the lower back plate of the backrest. For this reason, it is possible to reliably prevent the backrest from falling backward and ensure high quality. Backward movement of the seat is also reliably prevented by the backrest. Accordingly, the position stability of the seat is excellent.

It is the external appearance perspective view of a chair, (A) is what was seen from the front, (B) was what was seen from the back, (C) was seen from the lower part. (A) is the isolation | separation perspective view seen from this side, (B) is the isolation | separation perspective view seen from back. (A) is a perspective view which shows the attachment state of a seat board, (B) is a separate perspective view which shows the attachment procedure of a seat body. It is an isolation | separation perspective view which shows the attachment procedure of a backrest. It is a vertical side view in the location of an engaging part.

(1). Basic Structure Next, an embodiment of the present invention will be described with reference to the drawings. This embodiment is applied to a chair for two people. Therefore, the chair includes two sets of the seat body 1 and the backrest 2, and the seat body 1 and the backrest 2 are supported by the frame 3.

  The chair of this embodiment is made of wood, and as can be understood from FIG. 2, the underframe 3 is based on a structure in which a horizontal base plate 5 is supported by a pair of left and right leg plates 4 standing in a vertical posture. On the back surface of the base plate 5, a rear frame plate 6 having the same left-right length as that of the base plate 5 and having a vertical posture is overlapped. The upper end surface of the leg plate 4 is higher than the seat surface and lower than the backrest 2. Therefore, the user can put an elbow on the leg plate 4.

  A front wall plate 7, a left and right side wall plate 8, and a rear wall plate 9 that protrude downward from the outer periphery of the base plate 5 are fixed to the base plate 5. For this reason, the base plate 5 and the wall plates 7, 8, 9 constitute a downwardly opened box. The left and right side wall plates 8 and the leg plates 4 are fixed with a plurality of dowels 10 (may be fixed with screws). A longitudinally long bar member 11 that supports the side wall plate 8 is fixed to the inner side surface of the leg plate 4, and the side wall plate 8 is formed with a notch recess 12 having a downward opening in which the bar member 11 is fitted. Yes.

  The rear frame plate 6 is fixed to the rear surface of the rear wall plate 9 provided on the base plate 5 with dowels or screws. Accordingly, the rear frame plate 6 is fixed to the base plate 5 via the rear wall plate 9. The rear frame plate 6 may be fixed to the left and right leg plates 4, or may be fixed to both the base plate 5 and the leg plates 4.

  As shown in FIG. 1C, a first reinforcing plate 13 that is horizontally long and vertically oriented and a second reinforcing plate 14 that is vertically long and longitudinally fixed are fixed to the lower surface of the base plate 5. The first reinforcing plate 13 is also fixed to the left and right side wall plates 8, and the second reinforcing plate 14 is fitted to the first reinforcing plate 13 from below. The second reinforcing plate 14 is also fixed to the front wall plate 7 and the rear wall plate 9. Due to the presence of the reinforcing plates 13 and 14, the frame body having the base plate 5 as a core has a robust structure.

  The side wall plate 8 and the rear wall plate 9 are in a vertical posture, but the front wall plate 7 is tilted forward so as to be lowered as it goes downward, and a frame cushion corresponding to the seat body 1 is disposed on the front surface thereof. 15 is stretched. The frame cushion 15 is provided so as to be substantially flush with the front edge of the seat body 1 in a state in which the seat body 1 is attached, and the frame cushion 15 softens the user's contact with the calf. It is like that.

  Further, an interval of, for example, about 20 cm is provided between the left and right seats 1, and a partition portion 16 made of a plate material is provided at a position of this interval. Accordingly, luggage such as a bag or a paper bag can be placed in the partition portion 16. The partition part 16 can also be used for an elbow rest by making it higher than a seat surface. If the partition 16 is also cushioned, it will look good.

(2). Seat body and backrest Next, the seat body 1 and the backrest 2 will be described. As clearly shown in FIG. 5, the seat body 1 has a basic structure in which a seat cushion 20 is stretched on the upper surface of a wooden seat plate 19, and the seat plate 19 has a rearward extending portion 19 a that enters below the backrest 2. ing. In addition, the seat body 1 includes left and right side plates 21 and a rear plate 22 in order to maintain the shape of the seat cushion 20. For example, as shown in FIG. 3, the seat plate 19 and the base plate 5 are provided with two front and rear ventilation holes 23 (one or three or more may be provided).

  As clearly shown in FIGS. 3 and 5, the front and rear longitudinal first engagement holes 24 are formed in the left and right two portions of the front portion of the seat plate 19, while the upper surface of the base plate 5 is A first engagement hook 25 that is hooked in the rear side view and that holds the rear end edge of the first engagement hole 25 out of the seat plate 19 from above is fixed to the first engagement hole 25 from below. The first engagement hook 25 can be made of resin, but is preferably made of a metal plate.

The first engagement hole 24 and the first engagement hook 25 are examples of the first engagement means described in the claims. First, the seat plate 19 is overlapped on the base plate 5 in a state shifted from the set position. Thus, the first engagement hook 25 is engaged with the rear end edge of the first engagement hole 24 by fitting the first engagement hook 25 into the first engagement hole 24 and then shifting the seat 1 forward. Can be combined. As a result, the seat body 1 is held immovable upward and immovable forward.

  And since the left-right position of the seat body 1 is regulated by the leg plate 4 and the partition portion 16, the seat body 1 is fitted between the leg plate 4 and the partition portion 16 from above and is shifted to the front. The one engagement hook 25 can be accurately fitted into the first engagement hole 24. Therefore, the seat body 1 can be attached with a single touch very easily.

  As shown in FIG. 5, the backrest 2 has a basic structure in which a back cushion 27 is stretched on the front surface of the back plate 26, and side plates 28 for holding the shape are fixed to the left and right sides of the back plate 26, A lower surface plate 29 that is in contact with or close to the rearward extension 19a of the seat plate 19 is fixed to the lower end.

Back plate 26 of the backrest 2, overlaps the front surface of the standing portion 30 of the rectangle that upwardly projecting behind frame plate 6, standing portion 30 is smaller the lateral width and height than the back plate 26. Therefore, the back plate 26, from the particular to fix the auxiliary plate 31 of U-shaped downward opening surrounding the standing portion 30, (or on the back of the backrest 2) to the back plate 26, standing portion 30 fits in the downward opening A recess 32 is formed. The clearance between the recess 32 and the upright portion 30 is slight, and therefore, the backrest 2 can be moved downward by the guide action of the upright portion 30. The standing portion 30 rises from the upper surface of the base plate 5.

  In the embodiment, the rear surface of the standing portion 30 and the rear surface of the auxiliary plate 31 are substantially the same surface. Although the back cushion 27 is covered with a skin material 33, the skin material 33 also covers the auxiliary plate 31 and the left and right side plates 28.

  For example, as shown in FIGS. 4 and 5, the upper and lower longitudinal second engagement holes 34 are formed in the left and right two positions of the back plate 26 located inside the recess 32, while On the upper front surface, a second engagement hook 35 that is hooked upward in a side view and fixed to the second engagement hole 34 from behind and pressing the upper edge of the second engagement hole 34 of the back plate 26 from the front is fixed. doing.

  The second engagement hole 34 and the second engagement hook 35 are an example of the second engagement means described in the claims, and a series of operations in which the back plate 26 is overlapped on the front surface of the upright portion 30 and then shifted downward. The second engagement hook 35 is fitted into the second engagement hole 34 and the second engagement hook 35 is engaged with the back plate 26. Thereby, the backrest 2 is set at a predetermined position in a state in which it cannot move forward.

  Since the backrest 2 is restricted in its left and right positions by the inner periphery of the recess 32 and the outer periphery of the upright portion 30, the second engagement hook with respect to the second engagement hole 34 can be obtained by simply shifting the backrest 2 downward. 35 is accurately engaged. In FIG. 4, the back plate 26 is displayed on the right seat, and the upright portion 30 is hidden behind.

As described above, the backrest 2 is supported from the back by the standing portion 30, and the standing portion 30 is formed on the rear frame plate 6, so that the chair user leans against the backrest 2 and acts backward. Even if the backrest load is large , this can be supported accurately. That is, the load support strength of the backrest 2 is high. Moreover, since the rear frame plate 6 having the upright portions 30 is fixed to the base plate 5, the entire chair has a very robust structure.

Further, when the user leans against the backrest 2, the backward extension 19 a of the seat plate 19 is pushed downward by the backrest 2, so that the stability of the seat plate 19 becomes very high. For this reason, although it is a chair that can be easily assembled, there is no backlash or displacement of the seat body 1, and the same high quality as that with screws can be secured.

  Further, since the lower surface plate 29 of the backrest 2 is located behind the rear surface plate 22 of the seat body 1, the fall of the backrest 2 is also prevented by the rear surface plate 22 of the seat body 1 hitting the lower surface plate 29 of the backrest 2. Is done. For this reason, it is possible to reliably prevent the backrest 2 from falling backward and ensure high quality. The backward displacement of the seat body 1 can also be prevented. When the rear surface plate 22 of the seat body 1 hits the lower surface plate 29 of the backrest 2, it is preferable to ensure the softness of the hit. In this embodiment, for example, as shown in FIG. 2B, an elastic sheet 36 is provided on the rear plate 22 of the seat body 1 as an example of a buffer unit.

  For example, as shown in FIG. 4, a downward projection 26 a is provided at the left and right intermediate portion of the back plate 26, and a notch 5 a into which the downward projection 26 a is fitted is formed at the rear end of the base plate 5. Also with this configuration, the back tilt of the backrest 2 is accurately prevented.

  In the above embodiment, the engagement hooks 25 and 35 are provided on the seat plate 19 and the back plate 26, but the arrangement relationship between the engagement holes 24 and 34 and the engagement hooks 25 and 35 may be reversed. Further, as the engaging means, various structures such as a set of engaging claws that mesh with each other can be adopted.

  Furthermore, the present invention can be applied to a chair for one person or a chair for three or more persons. For example, an intermediate leg may be provided in the case of a multiple chair such as four or more seats.

  The present invention can be embodied by actually applying to a chair. Therefore, it can be used industrially.

DESCRIPTION OF SYMBOLS 1 Seat body 2 Backrest 3 Base frame 4 Leg board 5 Base board 6 Back frame board 19 Seat board 19a Backward extension part 20 Seat cushion 24 1st 1st engagement hole 25 which comprises 1st engagement means 25 1st engagement means 1st engaging hook 26 to constitute 26 Back plate 27 Back cushion 29 Lower surface plate 30 Standing portion 31 Auxiliary plate 32 Recess 34 Second engaging hole constituting second engaging means 35 Second making up second engaging means Engagement hook

Claims (3)

It has a seat and a backrest, and a frame that supports them,
The underframe has a basic structure in which a horizontal base plate is supported by left and right leg plates in a vertical posture, and a rear frame plate in a substantially vertical posture extending over the entire length of the base plate is disposed on the rear surface of the base plate. And
The rear frame plate is fixed to the base plate or the leg plate or both, and the rear frame plate is provided with an upward standing portion that supports a backward load acting on the backrest,
The seat body has a structure in which a cushion is stretched on a seat plate that overlaps the base plate from above, and the backrest has a structure in which a cushion is stretched on the front surface of the back plate that overlaps the front surface of the upright portion,
When mounting the seat body to the base plate back from attached to an upper surface of the base plate, the seat support back is turned stopper be configured to be held irremovably on the base plate,
When the backrest is not attached to the seat plate and the base plate, when the seat plate is overlapped with the base plate and shifted to the front, the seat plate fits into each other and holds the seat body in the set position so that it cannot move upward and forward. While the first engagement means is provided,
The upright portion of the rear frame plate has a left and right width smaller than that of the back plate and a height lower than the height of the back plate, and the recess into which the upright portion fits into the back plate. Forming
Furthermore, when the back plate overlaps the front surface of the upright portion and moves downward in the recess of the back plate and the upright portion of the rear frame plate, the back plate fits to each other and holds the back plate immovable forward. Engagement means are provided, and therefore the upper end of the upright portion is higher than the second engagement means,
Chair. A plurality of seats and a backrest are provided, and between the adjacent seats, a partition part that can be used as a luggage storage part or an armrest protrudes from the base plate, and the partition part and the leg body Or, the left and right positions of the seat body are regulated by adjacent partition portions,
The chair according to claim 1. The lower end of the backrest is composed of a lower surface plate, while the rear portion of the seat plate has a rearward extension portion on which the backrest rests from above and a rear surface plate on which the lower surface plate of the backrest abuts or approaches from behind. Provided,
The chair according to claim 1 or 2.

Images