JP6258668B2 - Chair - Google Patents

Description

  The present invention relates to a chair having wooden legs and a seat, and more particularly to a chair having improved strength and appearance.

Chairs with a wooden seat mounted on top of three or four wooden legs are widely known.
Further, as described in Patent Document 1, for example, a circular seat plate is attached to the upper part of four leg portions made of metal pipes, and the leg portions are connected to each other by an annular footrest member. There is also a reinforced chair.

JP 9-313299 A

  When manufacturing a wooden chair as described above, it is important to ensure strength, so it has been difficult to manufacture a chair with high design using soft wood such as cedar. In recent years, from the viewpoint of environmental protection, the demand for furniture made from thinned wood has increased, but depending on the type of wood, such as the above cedar, the strength is insufficient, so a chair with a slender silhouette and high design. Could not be produced.

  To solve this problem, thicken the legs made of wood, or increase the thickness of the wooden seat, to compensate for the lack of strength of the wooden chair. When the thickness of the seat plate is increased, the appearance of the chair is deteriorated and the mass is also increased. In addition, if you try to use beautiful cedar wood or low-strength wood (such as thinned wood), you must increase the thickness of the legs and the thickness of the seat, which greatly limits the degree of freedom in the design of the chair. In addition, there is a problem that aesthetics are greatly impaired.

  The chair described in Patent Document 1 is made of metal pipes and is reinforced by connecting the legs to each other with an annular footrest member. Since the part and the annular footrest member are exposed, the appearance is bad.

  The present invention has been made in view of the above problems, and the leg and the seat can increase the strength while leaving the appearance of the tree, and the wooden leg and the seat can be used as a thin cosmetic material. Thus, an object of the present invention is to provide a chair that can improve the design and appearance.

According to the present invention, the above-mentioned problems are solved as follows.
(1) In a chair having at least three legs and a seat fixed to the upper end of the leg, the leg is attached to the metal leg and the metal leg so as to cover at least the outer surface thereof. The seat is composed of a metal seat plate attached to the upper end portion of the metal leg, and a wooden seat plate attached to the metal seat plate so as to cover at least the upper surface thereof. The said wooden leg has a pair of inward side pieces which cover both side surfaces which continue the outer surface in a metal leg in the both-sides edge of the base piece which covers the outer surface of a metal leg, planar view inward U-shape or U-shape It shall have a cross section, and this wooden leg is fitted and fixed to the metal leg from the outside .

According to this configuration, the wooden legs are attached to each metal leg to reinforce the wooden legs, and the wooden seat is attached to the metal seats to reinforce the wooden seats, so the legs and seats are the appearance of the wood. The strength of the chair is increased while leaving
In addition, since the strength of the wooden legs and wooden seats increases, it is possible to use soft and thin wood that cannot be used normally, and the wooden legs and wooden seats function as cosmetics. Since it can be held, it is possible to provide a chair with a slender silhouette and high design and good appearance.
Furthermore, since at least the outer surface of the metal leg is covered with the wooden leg and at least the upper surface of the metal seat plate is covered with the wooden seat plate, the metal leg and the metal seat plate are not conspicuous, and the appearance of the chair is improved.
Since both side surfaces of the metal legs are also covered with the inwardly facing pieces of the wooden legs, the metal legs are not greatly exposed to the outside, and the appearance of the chair is further improved.
Moreover, it can be easily attached by fitting a wooden leg to the metal leg from the outside.

( 2 ) In a chair having at least three legs and a seat fixed to the upper end of the leg, the leg is attached to the metal leg and the metal leg so as to cover at least the outer surface thereof. The seat is composed of a metal seat plate attached to the upper end portion of the metal leg, and a wooden seat plate attached to the metal seat plate so as to cover at least the upper surface thereof. The wooden seat plate has a downward U-shaped cross section having a downward piece covering the outer peripheral surface of the metal seat plate, and the wooden seat plate is fitted and fixed to the metal seat plate from above .

According to such a configuration, since the surface of the metal seat plate is covered with the wooden seat plate except for the lower surface, the metal seat plate is not greatly exposed, and the appearance of the chair is further improved. Moreover, a wooden seat can be easily fitted to the metal seat from above.

( 3 ) In a chair having at least three legs and a seat fixed to the upper end of the leg, the leg is attached to the metal leg and the metal leg so as to cover at least the outer surface thereof. The seat is composed of a metal seat plate attached to the upper end portion of the metal leg, and a wooden seat plate attached to the metal seat plate so as to cover at least the upper surface thereof. The metal seat plate and the wooden seat plate form a substantially equilateral triangle in plan view, and projecting downward projections are provided at the respective top end portions of the metal seat plate, and hollow metal legs are formed on the projecting portions. The upper end portion is fitted, and the protrusion and the metal leg are fixed with screws .

According to such a configuration, since the substantially equilateral triangular seat is supported by the three legs at the top end portion, the sense of stability of the chair is improved.
Further, the metal seat plate and the metal legs can be easily assembled, and they can be disassembled and packed or transported.

( 4 ) In a chair having at least three legs and a seat fixed to the upper end of the leg, the leg is attached to the metal leg and the metal leg so as to cover at least the outer surface thereof. The seat is composed of a metal seat plate attached to the upper end portion of the metal leg, and a wooden seat plate attached to the metal seat plate so as to cover at least the upper surface thereof. A base piece covering the outer surface of the metal leg in the wooden leg is provided with a female screw hole that opens inward, and a bolt inserted from the inner side of the metal leg is screwed into the female screw hole, so that Ru mounting legs.

According to such a configuration , the wooden leg mounting bolt and the female screw hole are not exposed on the outer surface of the wooden leg, so the appearance of the chair is improved.

( 5 ) In a chair having at least three legs and a seat fixed to the upper end of the leg, the leg is attached to the metal leg and the metal leg so as to cover at least the outer surface thereof. The seat is composed of a metal seat plate attached to the upper end portion of the metal leg, and a wooden seat plate attached to the metal seat plate so as to cover at least the upper surface thereof. The wooden leg and the wooden seat plate are connected to a dowel provided on either one of the opposing surfaces by fitting a receiving hole provided on the other opposing surface .

According to such a structure, a wooden leg and a wooden seat board can be connected without a gap, and there is no possibility that the metal part is exposed from the outside through the gap.

  According to the present invention, the strength of the legs and the seat can be enhanced while leaving the appearance of the wood, and the design and appearance can be improved by using the wooden legs and the seat as a thin cosmetic material. An improved chair can be provided.

It is a perspective view which shows one Embodiment which applied the chair of this invention to the stool. Similarly, it is an exploded front view. Similarly, it is the front view which fixed the metal seat board to the upper end part of a metal leg, and formed the reinforcement frame. FIG. 4 is a bottom view of FIG. 3. It is a perspective view of a wooden seat board. It is a bottom view of a wooden seat board. It is the enlarged view which looked at the wooden leg from the inside. FIG. 8 is an enlarged longitudinal sectional view taken along a VIII-VIII plane in FIG. 1. It is the IX-IX line expansion cross-sectional view in FIG. Similarly, it is an X-X line enlarged vertical sectional view.

Hereinafter, an embodiment in which the present invention is applied to a stool will be described with reference to the drawings. In the following description, the center direction of the chair is inward and the opposite direction is outward.
As shown in FIGS. 1 and 2, the chair according to the present invention includes three legs 1 and a seat 2 having a substantially equilateral triangle in plan view supported by the upper ends thereof.

  Each leg 1 includes a hollow metal leg 3 made of a square tube, and a wooden leg 4 having an inward cross-sectional shape covering the outer surface and both side surfaces thereof and slightly longer than the metal leg 3. The seat 2 is composed of a metal seat plate 5 having a substantially equilateral triangle in plan view and a wooden seat plate 6 covering the upper surface and the outer peripheral surface thereof. In this embodiment, the metal legs 3 are made of steel, the metal seat 5 is made of aluminum or an alloy thereof, and the wooden legs 4 and 6 are made of cedar. Other metals and wood may be used.

  As shown in FIG. 3 which is a front view, FIG. 4 which is a bottom view and FIG. 10 which is a longitudinal sectional view of a main part of the metal seat plate 5, the metal seat plate 5 is curved in an inward arc shape with a loose outer peripheral edge. The substrate 7 has a substantially equilateral triangle in plan view, the upright piece 8 that stands up from the outer peripheral edge of the substrate 7, and the downward projection 9 that protrudes from the lower surface of each top end portion of the substrate 7. The downward protrusion 9 is coupled to the upper end of the metal leg 3.

On the upper surface of the substrate 7, three ribs 10 extending from the respective top end portions toward the center of the substrate 7 are projected upward, and the stepped through holes 11 in the vertical direction are disposed near the top end portions of the respective ribs 10. A boss 12 is formed.
The upper part of each downward protrusion 9 is an inclined protrusion 9a that is slightly inclined outward, and the lower end of the inclined protrusion 9a has a substantially rectangular cross section that is fitted to the upper end of the metal leg 3. The fitting protrusion 9b is provided so as to protrude downward.

  As shown in FIGS. 2 and 10, the fitting protrusion 9 b is provided with two internal and external female screw holes 13, 13, and the upper end of the outer surface plate 3 a of the metal leg 3 is provided at the upper end. Mounting holes 14 and 14 corresponding to the screw holes 13 and 13 are provided. The fitting protrusion 9b is fitted to the upper end of the metal leg 3, and the bolts 15 and 15 inserted into the upper and lower mounting holes 14 and 14 from the outside of the outer surface plate 3a of the metal leg 3 are connected to the fitting protrusion 9b. By screwing and tightening into the female screw holes 13, 13, a reinforcing frame F (FIG. 3) in which the metal seat plate 5 is fixed to the upper end portion of each metal leg 3 is formed.

  5, 6, and 10, the wooden seat plate 6 has an upper surface that is gently curved downward, and the planar shape is substantially an equilateral triangle similar to the metal seat plate 5, except for the top end portion. On the periphery, three downward pieces 6a are provided so as to be fitted from above so as to cover the standing pieces 8 excluding the top end portion of the metal seat plate 5. Each downward piece 6a is curved in an inward arc shape with the same curvature as the standing piece 8 of the metal seat plate 5 in plan view.

Near each top on the back surface of the wooden seat plate 6, an upwardly concave bottomed hole 16 that opens downward is formed. In this bottomed hole 16, an embedded nut 17 is inserted into each step of the metal seat plate 5. The holes 11 are fixed so as to correspond to the holes 11. In addition, two dowels 18, 18 project outward from each top end surface of the wooden seat plate 6.
After the wooden seat plate 6 is fitted to the metal seat plate 5 from above, bolts 15 inserted from below into the stepped through holes 11 of the metal seat plate 5 are inserted into the embedded nuts of the wooden seat plate 6 as shown in FIG. The wooden seat 6 is attached to the metal seat plate 5 by being screwed onto the metal seat plate 5, and the upper surface of the substrate 7 of the metal seat plate 5 and the outer surface of the upright piece 8 are covered with the wooden seat plate 6. At this time, since the lower surface of the wooden seat plate 6 comes into contact with the upper ends of the three ribs 10 of the substrate 7 in the metal seat plate 5, there is no possibility that the wooden seat plate 6 will dent downward.

  As shown in FIGS. 7 and 9, the wooden leg 4 is connected to the vertical base piece 4a covering the outer surface of the metal leg 3 and the inclined protrusion 9a and both side edges in the vertical direction. And a pair of inward side pieces 4b, 4b covering both side surfaces that are continuous with the outer surface of the inclined protrusion 9a, and has a substantially inwardly U-shaped transverse shape that opens inward. In addition, the cross-sectional shape of the wooden leg 4 may be inwardly U-shaped.

The wooden legs 4 are slightly tapered from the upper end to the lower end in a front view, and the thicknesses of both inward side pieces 4b are gradually reduced inwardly, so that the outer sides of both inward side pieces 4b are removed. The width dimension between the side surfaces is gradually reduced from the outside toward the inside. If it does in this way, the wooden leg 4 will come to exhibit a slim feeling and it will look good.
The upper end portion of the inner surface of the base piece 4a is an inclined surface 4c that can come into contact with the outer surface of the inclined protrusion 9a. The inclined surface 4c has a bottomed hole 19 that faces obliquely outward and opens inward. An embedded nut 20 is press-fitted into the bottomed hole 19 formed. The embedded nut 20 is press-fitted into the inner and outer through holes 21 formed on the inner surface of the lower end portion of the base piece 4a.

  Slightly below the inclined surface 4c, the heads of the upper and lower bolts 15 for fixing the upper ends of the metal legs 3 enter into the inner surface of the base piece 4a. , 22 are formed. Further, two receiving holes 23 and 23 corresponding to the dowels 18 and 18 of the wooden seat plate 6 are formed on the inner surface of the upper end portion of the wooden leg 4.

  In order to attach the wooden leg 4 to the metal leg 3, as shown in FIG. 8, the metal leg 3 and the inclined protrusions are fitted to the dowels 18 of the wooden seat plate 6 so that the receiving holes 23 of the wooden leg 4 are fitted. The wooden legs 4 are fitted into 9a from the outside. At this time, since the heads of the upper and lower bolts 15 are fitted into the bottomed holes 22, the inner surface of the base piece 4 a does not interfere with the heads of the bolts 15. In addition, when the receiving hole 23 of the wooden leg 4 is fitted to the dowel 18 provided in the wooden seat plate 6 and the wooden seat plate 6 and the wooden leg 4 are connected, they can be connected without a gap and through the gap. The possibility that the metal part is exposed from the outside is eliminated.

  Next, a bolt 25 inserted from the inside into a stepped through-hole 24 provided on the inclined protrusion 9a facing obliquely outward is screwed into the embedded nut 20 at the upper end of the wooden leg 4 and tightened. A bolt 25 inserted from the inside into a through hole 26 formed at the lower end of the wooden leg 4 is screwed into the embedded nut 20 at the lower end of the wooden leg 4 and tightened. As a result, the upper and lower ends of the wooden leg 4 are substantially aligned with the upper surface of the top end portion of the wooden seat 6 so that the metal leg 3 and the inclined protrusion 9a cover the outer surface and both side surfaces thereof. To be fixed. The embedded nut 20 at the lower end portion of the wooden leg 4 and the tip of the bolt 25 screwed to the embedded nut are blindfolded by a cap 27 fitted into the enlarged diameter hole on the outer surface side of the through hole 21.

  After attaching the wooden legs 4 in this way, the floor portion 28 made of synthetic resin having a wide flange portion 28a at the lower portion is press-fitted to the lower end portion of the metal legs 3, and the floor surface is damaged. Can be prevented.

  As described above, in the chair of the above embodiment, the metal frame 5 is fixed to the upper ends of the three metal legs 3 to form the reinforcing frame F, and the wooden legs 4 are attached to the metal legs 3. While reinforcing the wooden legs 4 and attaching the wooden seat board 6 to the metal seat board 5, the wooden seat board 6 is reinforced, so that the chairs with high strength can be obtained while the legs 1 and the seat 2 leave the appearance of the wood. can get.

  In addition, since the strength of the wooden legs 4 and the wooden seats 6 is increased, it is possible to use thinned wood or soft and thin wood that cannot be used normally, for example, cedar wood with a low strength but beautiful grain. In addition, since the wooden legs 4 and the wooden seat board 6 can be provided with a function as a decorative material, it is possible to provide a chair with a slim silhouette, high design, and good appearance.

  Since the metal leg 3 is covered with wooden legs 4 on the outer surface and both side surfaces, and the metal seat plate 5 is covered with the wooden seat plate 6 on its upper surface and outer peripheral surface, the metal portion is greatly exposed. Rather, the appearance of the chair is improved. In addition, if the inner surface of the metal leg 3 exposed to the outside and the lower surface of the metal seat plate 5 are painted in the same color as the wooden legs 4 and the wooden seat plate 6, the metal parts exposed to the outside are made inconspicuous. Can do.

As mentioned above, although this invention was demonstrated about embodiment, this invention can perform the following deformation | transformation and a change within the range which does not deviate from the summary.
In the above embodiment, the three legs 1 are provided. However, the present invention can be applied to a chair having three or more legs 1. At this time, the planar shape of the seat 2 can be a circle, an ellipse, a polygon more than a triangle, and the like.

In the above embodiment, the metal leg 3 is made of a square tube, and the outer surface and both side surfaces thereof are covered with the wooden legs 4. However, only the outer surface of the metal leg 3 or the outer surface and one outside the both side surfaces. The part may be covered with a wooden leg 4. The metal legs 3 may be made of a circular or non-circular pipe.
Further, the metal seat plate 5 may be covered with the wooden seat plate 6 only on the upper surface or on the upper surface and a part on the upper side of the upright piece 8.

  In the above embodiment, the through hole 21 for press-fitting the embedded nut 20 is provided at the lower end portion of the base piece 4 a of the wooden leg 4, and the blind cap 27 is attached to the enlarged diameter hole on the outer surface side of the through hole 21. Although it is inserted, if the thickness of the lower base piece 4a is increased, a bottomed hole that opens inward is provided instead of the through hole 21, and the embedded nut 20 is press-fitted into the bottomed hole. It may be. In this way, not only the cap 27 can be omitted at the lower part of the wooden leg 4, but also the appearance of the leg 1 is improved because the cap 27 is not exposed on the outer surface of the lower part of the wooden leg 4.

  In the above embodiment, the embedded nut 20 is press-fitted into the upper bottomed hole 19 and the lower through-hole 21 of the wooden leg 4. Instead of the embedded nut 20, a female screw hole into which a bolt 25 is screwed is provided. It may be provided. The wooden seat plate 6 may also be provided with a female screw hole instead of the embedded nut 17.

  In the above embodiment, the dowel 18 is provided on the wooden seat 6 side and the receiving hole 23 is provided on the wooden leg 4 side, but they may be provided in reverse.

  The upper surface and the outer peripheral surface of the wooden seat plate 6 may be covered with a skin material such as leather, cloth, felt, or a cushion material may be inserted between the upper surface of the wooden seat plate 6 and the skin material.

  The present invention can also be applied to, for example, a chair having a backrest attached to the rear portion of the seat 2.

DESCRIPTION OF SYMBOLS 1 Leg 2 Seat 3 Metal leg 4 Wooden leg 4a Base piece 4b Inward side piece 4c Inclined surface 5 Metal seat plate 6 Wooden seat plate 6a Downward piece 7 Substrate 8 Standing piece 9 Downward protrusion 9a Inclined protrusion 9b Fitting protrusion Portion 10 Rib 11 Stepped through hole 12 Boss 13 Female threaded hole 14 Mounting hole 15 Bolt 16 Bottomed hole 17 Embedded nut 18 Dowel 19 Bottomed hole 20 Embedded nut 21 Through hole 22 Bottomed hole 23 Receiving hole 24 Stepped through hole 25 Bolt 26 Through-hole 27 Cap 28 Floor contact member 28a ridge F Reinforcement frame

Claims (5)

In a chair having at least three legs and a seat fixed to the upper end of the legs,
The leg comprises a metal leg and a wooden leg attached to the metal leg so as to cover at least the outer surface thereof.
The seat is composed of a metal seat plate attached to the upper end of the metal leg, and a wooden seat plate attached to the metal seat plate so as to cover at least the upper surface thereof ,
A plan view inwardly U-shaped or U-shaped cross section having a pair of inward side pieces covering the wooden legs on both side edges of the base piece covering the outer surface of the metal legs and covering both side faces continuous with the outer surface of the metal legs. The chair is characterized in that the wooden leg is fitted and fixed to the metal leg from the outside . In a chair having at least three legs and a seat fixed to the upper end of the legs,
The leg comprises a metal leg and a wooden leg attached to the metal leg so as to cover at least the outer surface thereof.
The seat is composed of a metal seat plate attached to the upper end of the metal leg, and a wooden seat plate attached to the metal seat plate so as to cover at least the upper surface thereof ,
The wooden seat plate has a downward U-shaped cross section having a downward piece covering the outer peripheral surface of the metal seat plate, and the wooden seat plate is fixed by being fitted into the metal seat plate from above. And a chair. In a chair having at least three legs and a seat fixed to the upper end of the legs,
The leg comprises a metal leg and a wooden leg attached to the metal leg so as to cover at least the outer surface thereof.
The seat is composed of a metal seat plate attached to the upper end of the metal leg, and a wooden seat plate attached to the metal seat plate so as to cover at least the upper surface thereof ,
The metal seat plate and the wooden seat plate form a substantially equilateral triangle in plan view, and a downward projection is provided on each top end portion of the metal seat plate, and an upper end of a hollow metal leg is formed on the projection. A chair characterized in that the projections and metal legs are fixed with screws . In a chair having at least three legs and a seat fixed to the upper end of the legs,
The leg comprises a metal leg and a wooden leg attached to the metal leg so as to cover at least the outer surface thereof.
The seat is composed of a metal seat plate attached to the upper end of the metal leg, and a wooden seat plate attached to the metal seat plate so as to cover at least the upper surface thereof ,
A base piece covering the outer surface of the metal leg in the wooden leg is provided with a female screw hole that opens inward, and a bolt inserted from the inside of the metal leg is screwed into the female screw hole, whereby the wooden leg is attached to the metal leg. A chair characterized by mounting . In a chair having at least three legs and a seat fixed to the upper end of the legs,
The leg comprises a metal leg and a wooden leg attached to the metal leg so as to cover at least the outer surface thereof.
The seat is composed of a metal seat plate attached to the upper end of the metal leg, and a wooden seat plate attached to the metal seat plate so as to cover at least the upper surface thereof ,
A chair characterized in that the wooden leg and the wooden seat plate are connected to a dowel provided on one of the opposing surfaces by fitting a receiving hole provided on the other opposing surface .

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