JP4070182B2 - Chair - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a chair capable of changing the height and depth of a seat plate and a back plate.
[0002]
[Prior art]
In order to be able to use one chair from adults to children, it is preferable to be able to change not only the height of the seat plate and the back plate, but also the depth from the front end of the seat plate to the back plate.
Most conventional structures of this type of chair have a structure in which a back plate and a seat plate are sandwiched between left and right side plates and fixed with screws from the outside. Many holes are drilled in the left and right side plates, and the height of the back plate and the seat plate and the depth from the front end of the seat plate to the back plate are changed by changing the position of the mounting holes fixed with screws. It has become.
[0003]
[Problems to be solved by the invention]
When these adjustable ranges are widened so that it can be used by adults and children, a large number of mounting holes are drilled in the side plate, and the mounting holes are positioned in a position that matches the physique of the seated person and fixed with a number of screws. However, if the number of mounting holes becomes large, it is difficult to select which mounting hole to select.
[0004]
In view of the above-mentioned problems of the prior art, the present invention enables the user to easily and easily adjust the height of the back plate and the seat plate, and further, from the front end of the seat plate to the back plate. It is an object of the present invention to provide a chair in which the depth is automatically adjusted appropriately in accordance with the height adjustment of the back plate and the seat plate.
[0005]
[Means for Solving the Problems]
According to the present invention, the above problem is solved as follows.
(1) The rear portions of a pair of left and right side plates having an acute angle L-shaped side ridge having an inclined flange whose front edge is inclined backward are connected to each other by an upper connecting rod and a lower connecting rod. Connected by a rear plate extending in the vertical direction to form a leg of the chair, forming a guide groove facing the longitudinal direction on the inner side surface of the left and right inclined rods, and a back plate and a seat receiving rod that supports the seat plate the left and right ends fitted freely respectively slide in the guide groove, a back plate, prior Ki傾 Hasu杆, with height repositionable attached along its longitudinal direction, wherein the seat plate It is attached to the inclined rod and the rear plate so that the height position can be changed.
[0006]
(2) In the above item (1), a guide groove facing in the longitudinal direction is formed on the inner surface of the inclined rod, and a plurality of mounting holes penetrating the inclined rod in the left-right direction are formed along the inclined rod. In addition, inclined projections corresponding to the guide grooves of the inclined rods are provided at both ends of the back plate, and the back plate in which the projections are slidably fitted into the guide grooves can be placed at any position. It bolts in the said attachment hole.
[0007]
(3) In the above item (1) or (2), a guide groove directed in the longitudinal direction is formed on the inner surface of the inclined rod, and a plurality of mounting holes penetrating the inclined rod in the left-right direction are formed in the inclined rod. A seat receiving rod for supporting the front portion of the seat plate provided at both ends with inclined projections corresponding to the guide groove of the inclined rod is slidably fitted into the guide groove. Bolts are fixed to the mounting holes at arbitrary positions, and the protrusions provided at the rear part of the seat plate are inserted into the corresponding ones of the plurality of engagement holes provided in the vertical direction on the rear panel. Engage with.
[0008]
(4) In the above item (3), the seat plate is coupled to the seat receiving rod so that the front-rear position can be adjusted.
[0009]
(5) In any one of the above items (1) to (4), the lower portion of the inclined plate of the side plate is connected by a connecting rod that faces in the left-right direction.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
1 to 5 show an embodiment of the present invention. FIG. 1 is a first stage of assembly, FIG. 2 is a second stage of assembly, FIG. 3 is a seat plate, and FIG. FIG. 5 shows a state assembled in a height position, and FIG. 5 shows a state assembled for a child.
The present invention will be described with reference to these drawings.
[0011]
As shown in FIG. 1, the chair includes a pair of left and right side plates (1) having an acute L-shaped side view whose front edge is inclined backward.
The side plate (1) is composed of leg rods (2) extending in the front-rear direction along the floor surface and inclined rods (3) extending so as to incline rearward from the front end of the leg rod (2). The upper end of the heel (3) and the rear end of the leg heel (2) are substantially on the vertical line.
[0012]
A long guide groove (4) facing the longitudinal direction is provided on the inner surface of the inclined rod (3), and the inclined rod (3) is provided on the center line within the guide groove (4). A plurality of mounting holes (5) (11 in the illustrated example) penetrating in the left-right direction are formed at equal intervals.
A mounting hole (5a) penetrating in the left-right direction is formed in the upper end and lower end of the inclined rod (3), and a similar mounting hole (5a) is formed in the rear end of the leg rod (2). ) Is drilled.
[0013]
Upper connecting rod facing the lateral direction for connecting the upper ends of the inclined lever of a pair of opposing (3) (6), Ashi杆 same length lower connecting rod that connects the rear end portions of (2) (7), further, the length connecting rod that connects the lower ends of a pair of inclined rods (3) (8) are prepared.
In the illustrated example, the connecting rods (6) and (7) are square members, and the connecting rods (8) are pipe members.
[0014]
A rear plate (9) that is slightly narrow in the left-right direction is provided at the center of the connecting rods (6), (7) arranged in a substantially vertical direction. A plurality of engagement holes (10) extending in the horizontal direction are formed at equal intervals in the vertical direction at the intermediate height position of the rear plate (9).
The rear plate (9) is fixed to the connecting rods (6) and (7) by screws, for example, at the factory or at the site.
[0015]
The back plate (11) shown in FIG. 1 has the same length as the above-mentioned connecting rods (6), (7) and (8), and has protrusions (12) at both ends thereof.
When the front surface of the back plate (11) is substantially vertical, the protrusion (12) has a shape having an inclination and a width that match the guide groove (4) on the inner surface of the inclined rod (3).
[0016]
The seat receiving rod (13) is also the same length as the connecting rods (6), (7) and (8) described above, and has protrusions (14) at both ends thereof.
The protrusion (14) has a shape having an inclination and a width matching the guide groove (4) on the inner surface of the inclined rod (3) when the upper surface of the seat rod (13) is substantially horizontal. .
[0017]
As shown in FIGS. 2 and 3, the seat plate (15) has a rear projecting piece (16) attached by a screw (17) to the rear part thereof, and the rear surface, that is, the front surface from the center on the lower surface. A plurality of screw holes (18) facing upward are provided side by side in the front-rear direction at both left and right ends of the part. The width in the left-right direction of the seat plate (15) is equal to or slightly shorter than the length of the connecting rods (6), (7) and (8).
[0018]
When assembling the chair, first, as shown in FIG. 1, an upper connecting rod (6), a lower connecting rod (7) and a connecting rod (8) are arranged between a pair of left and right side plates (1). Bolts (19) are inserted from the outside into the mounting holes (5a), and the side plates (1) are screwed to these connecting rods (6), (7), (8). This forms the leg.
[0019]
At this time, the back plate (11) and the seat support rod (13) are fitted into the guide grooves (4) with the projections (12) and (14) at both ends thereof, and the inclined plate (3) of the side plate (1). It is slidably attached to. The leg in this state is shown in FIG.
[0020]
The seat plate (15) is a seat in which a projecting piece (16) protruding from the rear end is inserted into an engagement hole (10) at an arbitrary desired height position of the rear surface plate (9) and screwed at the same height position. Place the lower surface of the seat plate (15) on the horizontal upper surface of the receiving rod (13), and insert bolts (21) into the mounting holes (20) drilled on both sides of the seat receiving rod (13). Then, the seat plate (15) is screwed into a suitable one of the plurality of screw holes (18) on both sides of the lower surface of the seat plate (15) and tightened.
[0021]
Thus, an example in which the back plate (11) and the seat plate (15) are fixed at a high position for adults is shown in FIG. 4, and an example in which the back plate is fixed at a low position for children is shown in FIG. is there.
[0022]
In the illustrated example, the present invention is shown as being applied to a wooden chair, but it is needless to say that the present invention can be applied not only to a wooden chair but also to a metal chair.
[0023]
【The invention's effect】
According to the first aspect of the present invention, the back plate is attached to the inclined ridges forming the side plates along the inclined ridges, and the seat plate is attached to the inclined ridges and the rear surface plate. The height adjustment of the plate can be easily performed using a relatively small number of mounting holes, and the depth from the front end of the seat plate to be mounted to the back plate is set to the height of the back plate and the seat plate. It is convenient because it is automatically adjusted along with the adjustment.
[0024]
According to the invention described in claim 2, the back plate and the seat plate can be positioned by sliding in the guide groove, and can be fixed on the back plate and the seat plate. It is possible to easily adjust the height without searching for the position. Further, since the back plate can be set by sitting the seated person and adjusting the position of the back as it is, it can be easily set to an appropriate position in an easy-to-understand manner. Further, the engagement between the inclined protrusion corresponding to the guide groove of the inclined rod and the guide groove is an effective detent.
[0025]
According to the third aspect of the present invention, the seat plate to which the weight of the seated person is added can be easily and firmly prevented from being rotated.
[0026]
According to the fourth aspect of the present invention, it is possible to absorb the displacement of the seat plate with the change in the mounting position of the seat plate and to firmly bond the seat plate and the seat plate.
[0027]
According to the fifth aspect of the present invention, a leg having a strong frame structure can be formed.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of the present invention in a state in which its legs are disassembled.
FIG. 2 is a perspective view showing a situation in which a seat plate is attached to the assembled leg body.
FIG. 3 is an exploded perspective view of the seat plate as seen from below.
FIG. 4 is also a perspective view of a chair assembled at a height position for adults.
FIG. 5 is a perspective view of a chair assembled at a height position for a child.
[Explanation of symbols]
(1) Side plate
(2) Legs
(3) Inclined bowl
(4) Guide groove
(5) (5a) Mounting hole
(6) Upper connection rod
(7) Lower connection rod
(8) Linkage
(9) Rear plate
(10) Engagement hole
(11) Back plate
(12) Projection
(13) Seat holder
(14) Projection
(15) Seat plate
(16) Projection
(17) Screw
(18) Screw hole
(19) Bolt
(20) Mounting hole
(21) Bolt

Claims (5)

The rear portions of a pair of left and right side plates having an acute angle L-shaped side view having an inclined flange whose front edge is inclined backward are connected to each other by an upper connecting rod and a lower connecting rod. The legs of the chair are connected by extending the rear plate, and a guide groove facing in the longitudinal direction is formed on the inner surface of the left and right inclined rods , and the left and right of the back plate and the seat receiving rod that supports the seat plate the end fitted freely respectively slide in the guide groove, a back plate, prior Ki傾 Hasu杆, with height repositionable attached along its longitudinal direction, and the inclined rod the seat plate A chair mounted on the rear plate so as to be capable of changing a height position.   A guide groove facing in the longitudinal direction is formed on the inner surface of the inclined ridge, and a plurality of mounting holes penetrating the inclined ridge in the left-right direction are formed along the inclined ridge, at both ends of the back plate, An inclined protrusion corresponding to the guide groove of the inclined rod is provided, and the back plate in which the protrusion is slidably fitted into the guide groove is bolted to the mounting hole at an arbitrary position. The chair according to claim 1.   A guide groove facing in the longitudinal direction is formed on the inner surface of the inclined rod, and a plurality of mounting holes penetrating the inclined rod in the left-right direction are formed along the inclined rod to correspond to the guide groove of the inclined rod. A seat receiving rod for supporting the front portion of the seat plate having inclined projections at both ends is slidably fitted into the guide groove, and is bolted in a mounting hole at an arbitrary position. The chair according to claim 1 or 2, wherein a projecting piece provided at a rear portion is inserted into and engaged with a corresponding one of the plurality of engaging holes provided in the vertical direction on the rear plate.   The chair according to claim 3, wherein the seat plate is coupled to the seat receiving rod so that the front-rear position can be adjusted.   The chair according to any one of claims 1 to 4, wherein a lower portion of the inclined heel of the side plate is connected by a connecting heel facing in the left-right direction.

Images