JP4844723B2 - Chair - Google Patents

Description

  The present invention relates to a chair suitably used in an office or home.

As this type of chair, for example, as shown in Patent Document 1, a shell is formed on a separate back seat so that the seat shell is supported by a seat support and the back shell is supported by a back support rod. As shown in Patent Document 2, a structure having a back seat integrated molding shell is a general structure.
JP-A-8-10084 JP-A-11-266957

By the way, the outline that partitions the chair space is generally easy to understand when viewed from the front, back, left, and right, and it is easy to devise the three-dimensional shape of the back and the seat. The depth is not visible. For this reason, there is no choice but to change the seating surface according to the color, material, design, etc. of the upholstery on the plane. In some chairs with fixed legs, the seat is made of a stretched area such as mesh, and the lower part of the seat is visible, but in this case, the floor is only seen through, and special design is taken into consideration. is not.

The present invention provides a novel chair that can be used in a swivel chair or the like, and that can make a fresh impression on the user, particularly when taking a seat, by using the function of the chair suitably. It is something to try. However, when realizing such an object, it should be considered that the symmetry of the design can be pursued without impairing an appropriate support function for loads and an effective mounting function of various mechanical components.

In order to achieve this object, the present invention takes the following measures.

  That is, the chair of the present invention comprises a transparent or translucent region provided in the seat, and a plurality of seat frames that extend radially from a substantially central portion below the seat and support the lower surface of the edge of the seat, The base end portions of the seat frame are not directly connected to each other, and a base portion having an outer shape that connects between the base end portions of the seat frame is arranged at a substantially central portion below the seat, and each seat support is provided at the base portion. A base end portion of the frame is connected, and the lower portion can be seen through between the seat frames around the base portion through the region.

When configured in this way, it is possible to project a large amount up to the lower state through the seat frame on the transparent seat surface, so when the floor design can be seen through, the unity with the living space can be obtained, Or, when the leg can be seen through without being blocked by anything other than the base and the seat frame, the leg that does not have a meaning in the form when viewed in plan can be assigned a design role. It is possible to construct a novel design on the seat surface while ensuring the function of the chair. In particular, the base end portions of the seat frame are not directly connected to each other, but the base portions arranged at the substantially central part below the seat are connected between the base end portions. It is easy to create isotropic properties that contribute to load distribution and design objectability by extending symmetrically, and the mounting location for mounting mechanical parts such as the operation unit can be easily secured at the base. . In this case, if it is attached in such a manner that it is externally attached to the outer wall of the base part, the attachment height can be easily selected along the outer wall of the base part.

As a preferred embodiment, the leg body is provided with a leg support at the center of the leg blade extending radially, and has a base at the upper end of the leg support, and the leg blade is visible between the seat frames around the base, These leg blades may be visually recognized as extending radially from the base together with the seat frame.

In order to further highlight the effect of the present invention, it is preferable that an operation portion for adjusting the function of the chair is drawn out from the base portion in the radial direction.

Alternatively, it is also effective that the chair body is rotatably supported by the leg column, and the phase relationship of the radial elements changes with the rotation of the chair body, and the woven form changes based on this. .

Apparently, in order to eliminate the function and enhance the design effect, it is desirable that the seat has a mesh ground stretched inside the seat frame.

Since the present invention has the configuration described above, even if it is adopted in a swivel chair or the like, the lower part can be seen with a depth from between the seat frames through the seat, and the floor and legs can also serve as design elements. Thus, it is possible to provide a useful chair that can give the user a novel and unprecedented impression when taking a seat.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 to 3, the chair according to this embodiment is configured such that a chair body A including a seat 1, a back 2 and an armrest 7 is supported by a seat receiving structure 4 raised from a leg B. It is.

  More specifically, the leg B is formed by supporting the leg strut 3 rotatably at the center of five leg blades 5 extending radially from an equiangular position and having a caster 5a at the tip. The column 3 has an enlarged base 32 at the upper end of the column main body 31, and a gas spring type lifting mechanism 6 as shown in FIG. 4 is incorporated inside the column main body 31 from the diameter expanded base 32. As shown in FIGS. 4 and 5, the enlarged base 32 has a bowl-shaped cavity 32b opened with the cover 32a removed, and ribs 32d extending radially from the vicinity of the center of the bottom wall 32c. There is an inner space above the rib 32d so that a finger can be inserted into the cavity 32b. The central portion houses an operating portion 61 that locks / unlocks the lifting mechanism 6 by a projecting and retracting operation, and an operating lever 62 serving as an operating portion is provided at a part of the enlarged diameter base portion 32 at a position for opening and closing the operating portion 61. It is pulled out in the radial direction through the notch 32x, and is pivotally mounted around the support shaft m so that it can be turned up and down. The cover 32a covers the cavity 32b including the operating portion 61 without interfering with the operation lever 62. The operating lever 62 lifts the operating element 61 by lifting it up to make the lifting mechanism 6 free, and protrudes by releasing the lifting operation to lock the lifting mechanism 6.

Then, four seat receiving frames 41 constituting the seat receiving structure 4 are raised from the leg support 3 upward, and the seat 1 is supported at the tips of the seat receiving structures 41. The seat frame 41 includes a horizontal portion 41a and a vertical portion 41b that are continuously formed by integral molding. The horizontal portion 41a has a base end connected to the side surface of the enlarged diameter base portion 32, and is pulled out sideways from the base end. 3, it is taken out while gradually curving upward in a direction that is gradually separated from the central portion of FIG. 3, and in a plan view, it extends radially from the leg column 3 as shown in FIG. The upper load on the seat 1 is applied to the rear of the center, and the leg support 3 is positioned correspondingly to the load, so the front two seats of the seat frames 41 extending from the leg support 3 to the four corners of the seat 1 are placed. The receiving frame 41 (x) is set longer than the rear two seat receiving frames 41 (y). The vertical portion 41b is smoothly connected to the horizontal portion 41a as shown in FIG. 4, and supports the edge of the seat 1 at the tip, specifically the lower surfaces 1a and 1b at the four corners as shown in FIG. Yes. As shown in FIG. 8, the vertical portion 41b is internally provided with a screw insertion portion 41c along the extending direction. The screw insertion portion 41c opens downward at the intersection of the horizontal portion 41a and the vertical portion 41b. ing. As shown in FIGS. 2 to 4, etc., the cross section of the seat frame 41 has a flat oval shape that allows an adult with an average physique to be clamped at any position along the extending direction. Yes.

Since the seat frame 41 extends radially toward the four corners of the seat 1 in this way, a portion located between the seat frames 41, 41 below the seat 1 shown in FIG. Specifically, regions A1, A2, and A3 having a substantially triangular shape in the bottom view, which are respectively positioned in the front lower side, the left and right horizontal lower sides, and the rear lower side of the seat 1, are open spaces where no frame or the like exists. And this embodiment makes these function adjustment space which arranges an operation part (henceforth, it uses the same numerals A1, A2, and A3 as the above-mentioned field), and the operation is carried out in function adjustment space A2 located in the lower right side when viewed from the sitting position. A lever 62 is arranged.

On the other hand, the chair body A is composed of a seat 1, a back 2 and an armrest 7 as shown in FIGS. 1, 3 and 9, and is supported by the seat receiving structure 4 without using a back support rod. On the lower surface of the seat 1, screw fastening portions 11 formed by inserting nut members as shown in FIG. 7 and FIG. Then, the seat 1 is placed on the upper end of the seat receiving frame 41, and the screw V1 inserted from below into the screw insertion portion 41c of the seat receiving frame 41 is fastened to the screw fastening portion 11 provided in the seat 1, whereby the seat The seat 1 is attached to the receiving frame 41.

That is, this chair has a structure in which the front ends of the seat frames 41 constituting the seat structure 4 are firmly connected to each other on the sides of the seat frame 12 in a substantially straight line. 12 forms a three-dimensionally closed frame structure. As a result, even if each seat receiving frame 41 and seat frame 12 are formed relatively thin, the strength can be ensured as a whole, and each part will not be deformed by an impact or weight when seated.

As shown in FIG. 1 and FIG. 9 and the like, the seat 1 is configured by stretching a mesh ground 13 in an opening 12 a inside the seat frame 12, and the back 2 has a mesh ground 23 in the opening 22 a inside the back frame 22. A vertical rib provided at a position where the space between the seat frame 12 and the back frame 22 is reinforced is greatly pushed out so that it can be used as the elbow frame 71 to form an armrest 7. The back frame 22 and the elbow frame 71 are integrally molded with resin in a three-dimensionally connected state.

Specifically, as shown in FIGS. 1 and 2, the seat frame 12 has substantially the same width as the effective support portion 22 b and the seat frame 12 that warps upward from the lumbar corresponding portion 22 a that protrudes most forward in the back frame 22. The width of the back seat boundary portion X is set so that the buttock-corresponding portion 22c located in the deeper part of the back frame 22 is gradually narrowed downward as it goes downward from the lumbar-corresponding portion 22a of the back frame 22. Is set to be narrower than the effective support portion 22 b of the back frame 22 and the seat frame 12. Then, the rear end 71a of the elbow frame 71 is taken out from the back frame 22 to the front side, the front end 71b of the elbow frame 71 is taken out from the seat frame 12 to the upper side, and formed by the elbow frame 71, the seat frame 12 and the back frame 22. The resin is integrally molded so that the peripheral edge of the opening 7a is not within the two-dimensional plane and is curved three-dimensionally. That is, the opening 7a is visible not only from the side surface of FIG. 3, but also from the front surface of FIG. 2, and from the plane of FIG. 6 and the bottom surface of FIG. As shown in FIG. 8, the back seat boundary portion X has a U-shape that is forward-facing in the longitudinal section, and is continuous so as to form a three-dimensional shape while gently curving so that the longitudinal section is concave in a plan view along the buttock. is doing. A front hanging portion 15 is provided at the front end of the seat 1. The front hanging portion 15 is connected to the seat 1 so as to form an approximately inverted L-shape in the longitudinal sectional view shown in FIG. 4, and the longitudinal section thereof is along the front edge of the seat 1 as shown in FIG. It is continuous so as to form a three-dimensional shape while gently curving so as to have a forward protruding shape in a bottom view.

As shown in FIGS. 1 and 2, the rear end 71a of the elbow frame 71 is drawn from substantially the same height position as the lumbar corresponding portion 22a so that the fore edge is continuous with the fore edge of the back frame 22, and the back 2 is viewed in plan view. Since it is curved in a concave shape facing forward and the fore end of the back frame 22 faces the front side, the rear end 71a of the elbow frame 71 also moves forward while gently curving after being pulled out from the back frame 22 to the front side. It has a form to put out. Further, the front end 71b of the elbow frame 71 is pulled out so that the fore edge is continuous with the fore edge of the seat frame 12, and the seat frame 12 has a slightly upward concave shape when viewed from the front, and the fore edge is slightly above the horizontal. Therefore, the front end 71b of the elbow frame 71 also rises upward while being gently bent after being pulled out from the seat frame 12 slightly above the horizontal. The portion protruding from the back frame 22 and the portion rising from the seat frame 12 are both continuous to the upper end extending horizontally in the front-rear direction of the elbow frame 71. When viewed as ribs, these elbow frames 71 are longitudinal ribs with respect to the seat frame 12 and the back frame 22. The horizontal portion 71c is smoothly bent and connected to the upper end of the elbow frame 71.

The splitting direction of the mother die at the time of molding the chair body A is set to a direction of 45 degrees (see arrow Z in FIG. 3) that is substantially between the front-rear direction and the up-down direction.

Then, as shown in FIGS. 1 and 9, mesh grounds 13 and 23, which are separate members for forming a seating surface, are formed in the openings 12 a and 22 a existing inside the seat frame 12 and inside the back frame 22, respectively. It is fitted through the materials 14 and 24.

As shown in FIGS. 9 and 10, the opening edge of the back frame 22 is provided with a frame material attachment portion 122 having a frame material attachment surface 122a on the front surface and a groove 122b in which a plate-like body is fitted on the back surface. The mounting frame 120 including the mesh base 23 is fitted on the front surface of the frame material mounting portion 122, and the screw V2 inserted through the frame material mounting portion 122 of the back frame 22 from the back surface is fastened to the mounting frame 120, and the screw The decorative frame 121 is fitted into a position covering V2. The attachment frame 120 is formed with a fixed support surface 120a that is curved while gradually narrowing the opening width in a direction in which the mesh base 23 receives a load and bends.

Further, as shown in FIGS. 9 and 11, a frame material mounting portion 112 having a frame material mounting surface 112 a on the upper surface is provided at the opening edge of the seat frame 12, and a mesh is formed on the upper surface of the frame material mounting portion 112. The mounting frame 110 including the ground 13 is fitted, and the screw V3 inserted through the seat frame 12 from the lower surface is fastened to the mounting frame 110. The mounting frame 110 is formed with a fixed support surface 110a that is curved while gradually narrowing the opening width in a direction in which the mesh base 13 receives a load and bends.

The present embodiment forms the body of the chair shown in FIG. 1 as described above, and is screwed down from the vertical portion 41b of the seat frame 41 and the seat frame 12 shown in FIGS. The dimension d including the attachment portion 11 forms at least a three-dimensional space S between the upper end of the leg support 3 and the seat 1, and the seat 1 is bent as shown by a broken line in FIG. This can sink into the space S. At the same time, the space S is sized so that an operator can insert his / her fingers and attach and detach the cover 32a using a tool or the like as required, at least when no person is seated. In combination with the frame structure including the seat frame 41, the user can access the space S from any of the front, rear, left, and right directions to attach and detach the cover 32a, and perform maintenance of the internal operation unit 61 and the like. It can be done.

Further, in this chair, the seat receiving structure 4 positioned below the seat 1 has a plurality of seat receiving frames 41, and an operating portion 61 is arranged at the center thereof. Is only fixed to the seat receiving frame 41 by the screw V1, and if necessary, the screw V1 is removed to separate the seat 1 from the seat receiving structure 4 as shown in FIG. Further, if the cover 32a is removed, the operation unit 61 can be exposed to perform maintenance. Alternatively, since the seat 1 is fixed to each seat receiving frame 41 with screws V1 at four points as shown in FIG. 7, if only one screw V1 is left and the other screws V1 are removed, FIG. As shown in FIG. 8, the front ends of the seat receiving frames 41 are located at substantially the same height, and the seat 1 can be horizontally rotated with respect to the seat receiving structure 4. Can be issued. In this case, since the seat 1 is horizontally supported by the appropriate seat receiving frame 41 of the seat receiving structure 4 at the horizontally swiveled position, it is possible to perform maintenance work on the operating portion 61 and the like without being supported by hand. is there.

When such a chair is viewed from a visual point of view, the mesh base 13 stretched on the inside of the seat frame 12 forms a semi-transparent region, and is provided with a block-shaped seat, a shell, and the like below. Instead, as shown in FIG. 12, the seat frame 41 and the leg blades 5 constituting the seat structure 4 extend radially from the base portion as shown in a silhouette on the seat surface.

Thus, when the inside of the seat frame 12 is a semi-transparent region, when the operation unit is arranged in the function adjustment spaces A1 to A3 in FIG. It becomes visible with an overview of functions as well as numbers. In this embodiment, since the operating lever 62 of the lifting mechanism is only arranged in the function adjustment space A2 located in the lower right position in the seated state, the operating lever 62 is only one place at the time of taking off and seating. As described above, it is easy to be positioned in the lower right position in the seated state and to operate the gas spring type lifting mechanism 6 with the operation lever 62 extending radially from the upper end of the leg column 31. Is inferred. Also, if there are operation units in the other function adjustment spaces A1 and A3 shown in FIG. 7, they can be simultaneously recognized from the upper part of FIG. 12, so how many operation units are present, where they are located, It is possible to easily infer through the silhouette whether it is a function operation unit or what its operation method is.

As described above, the present embodiment includes a translucent region provided in the seat 1 and a plurality of seat receiving frames 41 that extend radially from a substantially central portion below the seat 1 and support the lower surface of the edge of the seat 1. The base end portions of the seat receiving frame 41 are not directly connected to each other, and the base portion 32 having an outer shape that connects between the base end portions of the seat receiving frame 41 is arranged at a substantially central portion below the seat. The base end portion of each seat frame 41 is connected to the base portion 32, and the lower portion can be seen through between the seat frames 41, 41 around the base portion 32 through the region.

In other words, the outline that partitions the chair space is relatively easy to understand when viewed from front, back, left, and right, and it is easy to devise a three-dimensional shape, but when viewed in plan, the seat is covered with a shell, etc. It is not easy to attach, and it was customary to change the color, material, design, etc. On the other hand, this embodiment can project the state of the lower part through the space between the seat receiving frames 41 and 41 on a transparent seating surface, so that the living room can be seen when the floor design can be seen through. Designed with leg 3 that has no meaning in the form of plan view when the leg 3 can be seen through without any obstruction except the base 32 and the seat frame 41. It is possible to pursue a novel design on the seating surface while ensuring the function of the chair as a structure. In particular, since the base end portions of the seat receiving frame 41 are not directly connected to each other, but the base end portion disposed at the substantially central portion below the seat 1 is connected between the base end portions. Adopting a structure in which 41 is extended substantially symmetrically, the load is appropriately distributed and the appearance is calm, and the mounting position of the operating lever 62 can be easily secured at the base 32. It is what. In this case, since it is also possible to attach another operation part to the outer wall of the base 32 as needed, it is possible to easily select the mounting height along the outer wall of the base.

Specifically, the leg 3 is provided with a leg support 31 at the center of the leg blade 5 extending radially, and has a base 32 at the upper end of the leg support 31, and the seat frames 41, 41 around the base 32. The leg blades 5 can be seen from the gap, and the leg blades 5 are apparently seen to extend radially from the base 32 together with the seat frame 41, so that the seat frame 41 and radial from the periphery of the base 32 A large number of radial elements composed of the leg blades 5 extend, and when viewed roughly, a radial design melted integrally with the seat frame 41 and the leg blades 5 is reflected on the seat surface.

Further, an operation part for adjusting the function of the chair is drawn out from the base part 32, and the operation lever 62, the seat receiving frame 41 and the leg blades 5 all extend in the radial direction. Even if the operation lever 62 is arranged at a position where it is easy to operate, the presence of the operation lever 62 can be dissolved in the periphery to eliminate the uncomfortable feeling.

Furthermore, the chair body A is rotatably supported by the leg column 31, and the phase relationship of the seat frame 41 and the operation lever 62 with respect to the radial elements, that is, the leg blades 5, changes with the rotation of the chair body A, and based on this. Since the weaving form changes at substantially equal pitches, it is possible to make the impression reflected on the seating surface rhythmically and richly varied when the chair is rotated or when the chair is moved.

And the seat 1 of this embodiment has the mesh base 13 stretched inside the seat frame 12, and the floor and legs that can be seen between the seat receiving frame 41 below the seat 1 and the seat receiving frames 41, 41. Since the body 3 and the like are projected in a silhouette, the design effect can be effectively enhanced by discarding the function.

The specific configuration of each unit is not limited to the above-described embodiment.

For example, as shown in FIGS. 13 to 16, three seat frames 41, 41, 141 are drawn out in a Y shape from the leg column 3, and a plurality of operation levers 162, 262 are drawn out radially to constitute a chair. You can also

The chair includes two front receiving frames 41 (x) extending radially forward in a plan view (or bottom view) and a lower surface of a central portion in the width direction behind the seat frame 12 extending radially rearward. And a seat receiving frame 141 to be supported, and the seat receiving frame 141 also serves as a locking reaction force mechanism.

In other words, the seat 1 of this chair is pivotally attached to the front two seat receiving frames 41 (x) via the front support shafts p at the front two corners, and the rear lower surface via the rear support shaft q. The seat 1 is pivotally attached to the seat frame 141. When the seated person falls on the back 2, the seat 1 rotates around the front support shaft p and the rear sinks.

The seat receiving frame 141 that receives the gas spring 141a includes a gas spring 141a and a locking spring 141b that is arranged around the axis of the gas spring 141a and is compressed in conjunction with the compression operation of the gas spring 141a. As shown in FIG. 15, one end of the gas spring 141a is inserted into the enlarged diameter base 32 and supported by the retainer 141c together with the locking spring 141b. The operating portion 140x of the gas spring 141a is disposed at a position penetrating the retainer 141c, and in a normal state, the pressing element 162a provided at the inner end of the operation lever 162 is at a position where the operating element 140x can be pressed from the position of FIG. And the gas spring 141a is kept open. Then, by rotating the operation lever 162, the pressing element 162a can be moved away from the operating element 140x as shown in FIG. 15 and fixed at a required locking position. Of course, like the operation lever 62 of the above-described embodiment, the operation lever 162 is pulled up to immerse the operating element 61 to make the lifting mechanism 6 free, and by releasing the lifting operation, the operation lever 162 protrudes and is locked at the lifting position at that time. It also serves as a role.

  This chair is also provided with a locking reaction force adjusting mechanism. An operation rod 262 shown in FIGS. 13 and 14 is an operation portion for adjusting the reaction force by a rotating operation. A wedge member (not shown) provided in the enlarged diameter base portion 32 by rotating the operation rod 262 in FIG. By screw feeding in the direction perpendicular to the paper surface, the retainer 141c is moved in the compression direction or extension direction of the spring 141b, so that the reaction force can be increased or decreased.

  With this configuration, the leg blades 5, the seat receiving frames 41, 41, 141, the operating lever 61, and the operating rod 162 extend radially below the seat 1 when viewed in plan as shown in FIG. The appearance is different from the form, and a new design based on a different function can be formed on the seating surface.

Other configurations can be variously modified without departing from the spirit of the present invention.

For example, even if a transparent or translucent bearing surface is formed of acrylic or the like in place of the mesh ground, the same effects as described above are produced visually.

The perspective view which shows the chair which concerns on one Embodiment of this invention. The front view. The left side view. FIG. The perspective view which shows the internal structure of the enlarged diameter base part of the embodiment. The top view of the state which abbreviate | omitted the mesh ground of the chair which concerns on the embodiment, and removed the upper end cover of the leg support | pillar. The bottom view of the chair which concerns on the same embodiment. The exploded view of FIG. The disassembled perspective view of the chair main body which concerns on the same embodiment. Sectional drawing which shows the state by which the mesh place is engage | inserted by opening of a back frame. Sectional drawing which shows the state by which the mesh ground is engage | inserted by opening of the seat frame. The top view of the chair which concerns on the same embodiment. The bottom view which shows other embodiment of this invention. The right side view. FIG. The left side view. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Seat 3 ... Leg body 5 ... Leg feather 12 ... Seat frame 13 ... Mesh ground 31 ... Leg support 32 ... Base (expansion base)
41, 141 ... seat frame 62 ... operation part (operation lever)
162 .. operation unit (operation rod)

Claims (5)

A transparent or semi-transparent region provided on the seat, and a plurality of seat receiving frames that extend radially from a substantially central lower portion of the seat and support the lower surface of the edge of the seat; Are not directly connected, but a base portion having an external shape is arranged at the center of the lower part of the seat so as to connect the base end portions of the seat frames, and the base ends of the seat frames are connected to the base portions. The chair is configured such that the lower part can be seen through between the seat frames around the base through the region. The leg is provided with a leg support in the center of the leg wing extending radially, and has a base at the upper end of the leg support, and the leg wing can be seen between the seat frames around the base, and these leg wings seem to be The chair according to claim 1, which is visually recognized as extending radially from the base together with the seat frame. The chair according to claim 2, wherein an operation unit for adjusting the function of the chair is pulled out from the base in a radial direction. The chair according to claim 2 or 3, wherein the chair body is rotatably supported by the leg column, and the phase relationship of the radial elements is changed with the rotation of the chair body, and the woven form is changed based on this. . The chair according to any one of claims 1 to 4, wherein the seat has a mesh ground stretched inside the seat frame.

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