JP5292595B2 - Chair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a chair in which the same armoring material can be used in a backplate in both conditions of a condition where the headrest is attached and a condition where the headrest is not attached. <P>SOLUTION: The chair has the backplate 61, the armoring material 62 arranged in the front face of the backplate 61 by hooking the upper fringe attaching portion 62b to the upper fringe portion of the backplate 61, the headrest 8 detachably attached to the upper fringe portion of the back plate 61 from which the upper fringe attaching portion 62b of the armoring material 62 is detached, and a front pad member 63 arranged in the front face of the backplate 61 for fixing the headrest 8 to the backplate 61 and is constituted such that the upper fringe attaching portion 62b of the armoring material 62 detached from the upper fringe portion of the backplate 61 can be hooked to the front pad member 63 with the headrest 8 fixed to the backplate 61 using the front pad member 63. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a chair to which a headrest can be attached.

  Conventionally, in a chair that can be used as a chair even without a headrest attached, a concavity has been considered as an attachment part (insertion part) for attaching the headrest to the upper end of the back plate of the chair (for example, a patent) Reference 1). If it is such, it is possible to select and use either a specification that constitutes the backrest only with the back plate without attaching a headrest, or a specification that mounts the headrest on the upper edge of the back plate It becomes possible.

It is also conceivable to attach exterior materials to the chairs of each specification. For example, in the specification in which the backrest is configured only by the back plate without attaching the headrest, it is conceivable to fix the exterior material by turning it from the front surface to the back plate upper and lower end portions and the back surfaces of both side end portions. On the other hand, in the specification in which the headrest is mounted on the upper edge of the back plate, the recess provided in the upper end of the back plate is used as a hole for attaching the headrest. If it is to be attached, it is conceivable to provide a hole or slit in the exterior material so as to avoid the headrest attachment portion, or to attach an exterior material that covers the backrest to the headrest integrally.
Japanese Patent Laid-Open No. 2003-102585

  However, in such a case, it is necessary to prepare two types of exterior materials corresponding to the specifications with and without the headrest attached, and it is necessary to select the use depending on whether the headrest is attached or detached. In addition, storage methods for exterior materials that are not used must also be considered.

  Therefore, the present invention focuses on the above-described problems, and provides a chair that can use the same exterior material for the back plate in both the state where the headrest is attached and the state where the headrest is not attached. It is an object.

A chair according to the present invention made to solve the above-described problems includes a back plate and an exterior material disposed on the front surface of the back plate by hooking an upper edge mounting portion on the upper edge of the back plate. A headrest detachably mounted on the upper edge of the back plate from which the upper edge mounting portion of the exterior material has been removed, and a headrest attached to the front surface of the back plate to fix the headrest to the back plate. A front abutting member, and an upper edge mounting portion of the exterior material that is removed from an upper edge portion of the back plate in a state where the headrest is fixed to the back plate using the front abutting member. It is configured to be able to be hung on the front contact member.

  If this is the case, the exterior material that was used in the specifications without the headrest can be used in the specifications with the headrest attached, so it is necessary to prepare multiple exterior materials according to changes in the specifications. Disappears.

  The front abutting member is provided with a latching edge that has a shape imitating the upper edge of the back plate, and the front abutting member is attached to the front surface of the back plate, If the edge portion is configured to face the upper edge portion of the back plate via a gap, the shape of the exterior material used in the specification with no headrest attached can be used as it is. In addition, since the shape of the upper edge portion of the front contact member approximates the shape of the upper edge portion of the back plate, the appearance from the front and back of the chair does not change so much regardless of the presence or absence of the front contact member. it can.

  A specification that constitutes a backrest with only the back plate, a specification in which an exterior material is attached to the front surface of the back plate with its upper edge mounting portion hooked to the upper edge of the back plate, and an upper edge of the back plate If the headrest is attached to the front part and the exterior material is arranged on the front surface of the back plate, the upper edge attaching part is hooked on the front abutting member and arranged to be able to adopt any one of the specifications. It is possible to realize a plurality of specifications different in usage and appearance in one chair.

  Here, the “specification that constitutes the backrest with only the back plate” refers to an aspect of using as a chair without using any of the headrest, the front contact member, and the exterior material.

  As a structure of the back plate suitable for such a chair, it comprises a peripheral frame portion having no holes and an intermediate surface portion surrounded by the peripheral frame portions, and the intermediate surface portion has a plurality of holes. It is preferable that the resin mesh region and the resin shell region having no hole are provided, and the resin mesh region and the resin shell region are alternately arranged.

  According to the present invention, the same exterior material can be used for the back plate in both the state where the headrest is attached and the state where the headrest is not attached.

  Hereinafter, an embodiment in which the present invention is applied to a synchro tilt type office rotary chair 100 will be described with reference to the drawings.

  As shown in FIGS. 1 to 4, the chair 100 includes a leg 1, a support base 2 that is supported on an upper portion of the leg 1 and can be turned horizontally, and a seat 3 that is disposed on the support base 2. A seat 4 held by the seat receiver 3, an armrest 10 provided extending from the lower side of the seat receiver 3 to the left and right, and a back support body 5 provided on the support base 2 so as to be able to tilt backward. A backrest 6 attached to the back support 5 and a headrest 8 detachably provided at an upper end portion of the backrest 6 are provided.

  The leg 1 includes a leg base 11 and a leg support 12 provided at the center of the leg base 11. The leg base 11 is formed by radially projecting leg blades 11b from a hub 11a provided at the center, and a caster 11c is provided at the tip of the leg blade 11b. The leg struts 12 are mainly composed of gas springs, and are normal ones that can elastically extend in the vertical direction and can be locked at a desired position.

  The support base 2 includes a housing 21 attached to an upper end portion of the leg support 12, a main shaft 22 that is rigidly connected to the housing 21 and supports the back support 5 so as to be able to tilt backward, and the housing 21 A tilting reaction force generation mechanism (not shown) is provided that generates a repulsive force with respect to the backward tilting operation of the back support 5. Since the tilt reaction force generation mechanism is a normal one using a coil spring, a gas spring, or the like, description thereof is omitted.

  The seat receiver 3 is a shell-shaped member that holds the seat 4, and its front end side is attached to the support base 2 so as to be movable back and forth, and its rear end side is supported by the base end portion of the back support 5. Has been.

  The armrest 10 includes an elbow strut 101 attached to the seat support 3 and an elbow rest 102 provided on the upper end portion of the elbow strut 101. The left and right armrests 10 have a symmetrical shape.

  The back support 5 includes a back support rod 51 that is supported on the main shaft 22 of the support base 2 so as to be able to tilt backward, and an elastic horizontal flange 52 attached to the upper end portion of the back support rod 51. Become. The back support rod 51 includes a lower back frame 51b having a base end attached to the main shaft 22 of the support base 2, and an upper back frame 51a coupled to the tip of the lower back frame 51b. The lower back frame 51 b is made of metal, and the outside thereof is covered with a cover 53. The outer surface of the cover 53 is positioned so as to be continuous with the outer surface of the upper back frame 51a. The upper back frame 51a is integrally formed of synthetic resin, and its upper part is branched into two. The elastic recumbent 52 is a leaf spring having two intermediate portions supported by the upper end of the back support rod 51, and supports the backrest 6 at both ends thereof.

  The backrest 6 is mainly composed of a back plate 61, a front contact member 63 detachably attached to the front surface of the back plate 61, and the back plate 61 or the front surface of the front contact member 63. And an exterior material 62 detachably provided. The back plate 61 includes a back plate main body 61a, side end attachment portions 61c provided on both right and left sides of the back plate main body 61a, and a lower end attachment portion 61b provided on a lower end portion of the back plate main body 61a. Thus, the side end attaching portion 61 c is connected to both end portions of the elastic horizontal bar 52, and the lower end attaching portion 61 b is attached to the lower back frame 51 b of the back support rod 51.

  The back plate body 61a is made of a synthetic resin, and includes a peripheral frame portion 61a1 having no hole 61d and an intermediate surface portion 61a2 surrounded by the peripheral frame portion 61a1. The intermediate surface portion 61a2 includes a resin mesh region M having a plurality of holes 61d and a resin shell region S having no holes 61d, and the resin mesh regions M and the resin shell regions S are alternately arranged. doing. Specifically, the resin shell region S of the intermediate surface portion 61a2 has a horizontal belt shape and is arranged so as to connect the opposing portions of the peripheral frame portion 61a1. A plurality of the resin shell regions S having a belt shape are arranged in parallel in the vertical direction, and the resin mesh is formed between the resin shell regions S and between the resin shell region S and the peripheral frame portion 61a1. Regions M are formed respectively. The resin mesh region M is formed thinner than the resin shell region S, and has a plurality of circular holes 61d penetrating therethrough. That is, the front surface of the resin shell region S and the front surface of the resin mesh region M are formed flush with each other, while the back surface of the resin mesh region M is provided to be recessed from the back surface of the resin shell region S. ing.

  Hereinafter, a description will be given with reference to FIGS. Here, FIG. 5 is a perspective view of the chair 100 in a state where the exterior member 62 and the front contact member 63 provided on the front surface of the back plate main body 61a in FIG. 2 are removed. 6 is an enlarged cross-sectional view taken along the line AA in FIG. 4, specifically cut vertically so as to pass through the center of the rear leg portion 81c of the headrest 8 from the headrest 8 to the back plate body 61a. FIG. FIG. 7 is a cross-sectional view showing a state in which the exterior material 62 is attached when the headrest 8 and the front contact member 63 are not attached, and FIG. 8 shows the headrest 8, the front contact member 63, and the exterior material attached to the back plate 61. 62 is an exploded perspective view of 62. FIG.

  The front contact member 63 is integrally formed of the same synthetic resin as the back plate 61, and a member main body 63a connected to the rear leg portion 81c of the headrest 8 via the back plate 61, and the member main body 63a. It is provided with a latching edge portion 63b that is continuously provided above and for hanging the upper end of the exterior material 62. While the front surface of the front contact member 63 is flush with the back surface, the back surface of the member body 63a protrudes from the latching edge 63b, and the protruding portion has a shape along the front surface of the back plate 61. Therefore, the member main body 63a is attached to the front surface of the back plate 61 in a detachable manner. Further, the member main body 63a is provided with screw holes 63a1 penetrating in the front-rear direction at portions corresponding to two rear leg portions 81c of the headrest 8 to be described later, one on each of the left and right sides. The latching edge 63b faces the upper edge of the back plate 61 through a gap, and the upper edge and the upper left and right side edges have the same shape as the upper end and left and right side edges of the back plate 61. ing.

  The exterior material 62 is integrally formed by sewing a cushion, a tension fabric, and the like. The exterior material 62 is provided integrally with an exterior material body 62a that covers the front surface of the back plate 61 and the exterior material body 62a. An upper edge mounting portion 62b that is hung on the upper edge of the frame portion 61a1 or the latching edge portion 63b of the front contact member 63, and a lower edge of the peripheral frame portion 61a1 of the back plate 61 provided below the exterior material body 62a. The left and right corner attachment portions 62c are provided on the left and right corner portions.

  The exterior material main body 62 a has a shape along the outer peripheral edge of the peripheral frame portion 61 a 1 of the back plate 61. The upper edge attaching portion 62b is provided with a single stretch of fabric that has a shape corresponding to the upper portion of the exterior material main body 62a so as to overlap above the exterior material main body 62a, and the upper edge portions are sewn together. As a result, a bag shape having a downward opening is formed. The left and right corners 62c are respectively provided with two pairs of left and right tensions corresponding to the lower part of the exterior material main body 62a so as to overlap the lower left and right of the exterior material main body 62a, respectively. By stitching the parts, there are openings on the upper right and upper left, respectively. The corner attachment portion 62c is not bag-shaped, and a slit 62c1 is provided between the left and right corner attachment portions 62c at a portion corresponding to the lower end attachment portion 61b of the back plate 61. It has become. A band 62c2 for connecting the two lower end mounting portions 61b is provided above the slit 62c1, that is, at the upper end portions of the left and right corner mounting portions 62c. The band 62c2 has a hook-and-loop fastener and is detachably provided.

  The headrest 8 includes a base 81 provided with a mounting portion detachably attached to the back plate 61, and a headrest body 82 supported by the base 81 and supporting a user's head.

  The base 81 is integrally formed of a synthetic resin, and includes a base body 81a attached to the headrest body 82, four front leg portions 81b extending downward from the base body 81a, and in parallel with the front leg portion 81b. And two rear leg portions 81c extending downward from the base body 81a. The two rear leg portions 81c are provided symmetrically, and have engaging portions 81c1 for engaging with the step portions 61a3 provided on the back plate 61, respectively. The rear surface of the rear leg portion 81c is formed flush with the front surface, and the front surface of the rear leg portion 81c is thicker than the upper portion of the rear leg portion 81c as the engaging portion 81c1, and supports the load applied to the headrest 8. Yes. Further, a concave portion 82b1 is provided at a position corresponding to the screw hole 63a1 provided in the front contact member 63 in the engaging portion 81c1, and a metal insert nut N is molded in the concave portion 82b1.

  The headrest body 82 is formed of a synthetic resin back plate 82a formed integrally with the base 81 and continuing from above the base body 81a, and an exterior material comprising a cushion and a tension fabric covering the front and back surfaces of the back plate 82a. And a main body 82b. The exterior material 62 is preferably made of the same material and color as the exterior material body 62 a used for the seat 4 and the backrest 6 of the chair 100.

  In this embodiment, the headrest 8 is attached by detachably engaging the base 81 of the headrest 8 with the back plate 61. Specifically, the rear leg portion 81c of the headrest 8 is detachably engaged with the step portion 61a3 provided on the back plate 61 by using elastic deformation, and the front contact member 63 and the rear leg portion 81c are further engaged. The back plate 61 is sandwiched back and forth using the mating portion 81c1 and is tightly coupled by a screw B penetrating from the front of the front contact member 63 to the rear leg portion 81c.

  Next, an operation and an operation of each part when the headrest 8 is attached to and detached from the back plate 61 will be described.

  That is, the attachment of the headrest 8 according to the present embodiment is such that the back plate 61 to which the headrest 8 is attached has a stepped portion 61a3 at the boundary between the peripheral frame portion 61a1 and the intermediate surface portion 61a2 surrounded by the peripheral frame portion 61a1. The intermediate surface portion 61a2 includes a resin mesh region M having a plurality of holes 61d and a resin shell region S not having the holes 61d, and the resin mesh region M and the resin shell region S of the intermediate surface portion 61a2 on the back surface of the back plate 61 First, the front leg portion 81b and the rear leg portion 81c of the headrest 8 are placed upward so as to sandwich the back plate 61 toward the upper edge portion of the back plate 61. Wear from.

  Next, the engaging portion 81c1 is engaged with the stepped portion 61a3 of the back plate 61 by using a temporary elastic deformation of a member constituting the base 81 or a member constituting the back plate 61. At that time, the engaging portion 81c1 has an upper end engaged with a boundary between the peripheral frame portion 61a1 and the resin mesh region M of the intermediate surface portion 61a2, and a lower end thereof at the boundary between the resin mesh region M and the resin shell region S. By engaging with each other, the headrest 8 can be prevented from coming off unless a certain force is applied in the vertical direction.

  Further, the front contact member 63, specifically, the member main body 63 a of the front contact member 63 is attached to the front surface of the back plate 61 on which the headrest 8 is mounted so that the back plate 61 is in contact with the back plate 61. The headrest 8 and the front contact member 63 are arranged. Thereafter, the screws B are inserted into the two screw holes 63a1 provided in the front contact member 63 from the front surface of the front contact member 63, and are provided in the rear leg portion 81c through the holes 61d provided in the resin mesh region M. Insert the nut until it reaches the insert nut N and screw it in. Thereby, the front contact member 63, the back plate 61, and the headrest 8 are tightly coupled.

  On the other hand, when removing the headrest 8 from the back plate 61, the screw is released, the front contact member 63 is removed, and the engaging portion 81c1 of the headrest 8 is separated from the back plate 61 so as to be separated from the back leg portion. A force is applied to 81c to release the engagement between the engaging portion 81c1 and the stepped portion 61a3. Then, the removal operation is performed by moving the headrest 8 upward in this state.

  By performing the operation of attaching and removing the headrest 8 to / from the back plate 61 as described above, the following three specifications can be considered as the specification of the chair 100 according to the present embodiment.

  In the first specification (hereinafter referred to as “first specification X”), the backrest 6 is constituted only by the back plate 61 as shown in FIG. That is, the backrest 6 is configured only by the back plate 61 without mounting any of the exterior material 62, the headrest 8, and the front contact member 63. Therefore, in the first specification X, the pattern formed by the resin shell region S and the resin mesh region M of the back plate 61 and the recesses 82b1 and the holes 61d provided in these regions can be seen.

  The second specification (hereinafter referred to as “second specification Y”) is a state in which an exterior material 62 is attached to the front surface of the back plate 61 as shown in FIG. The upper edge attaching portion 62b is hooked on the upper edge portion of the back plate 61. The second specification Y is obtained by attaching the exterior material 62 that covers the front surface of the back plate 61 to the first specification X. By attaching the exterior material 62, the second specification Y can be more fitted to the back of the user. Depending on the color and pattern of the exterior material 62, an impression different from the appearance of the first specification X can be given. That is, the pattern formed by the resin shell region S and the resin mesh region M that can be visually recognized with the first specification X becomes invisible.

  As shown in FIG. 2, the third specification (hereinafter referred to as “third specification Z”) is that the headrest 8 is attached to the upper edge of the back plate 61 and the front surface of the back plate 61 is attached. The exterior material 62 is configured by hooking the upper edge mounting portion 62b to the front contact member 63. In the third specification Z, the headrest 8 and the front contact member 63 are attached to the first specification X by the mounting method described above, and then the exterior material 62 is applied from the lower end portion of the back plate 61 to the latching edge 63b of the front contact member 63. The upper end mounting portion of the exterior material 62 that is attached to the upper edge portion of the back plate 61 in the second specification Y is applied to the latching edge portion 63b of the front contact member 63 as it is.

  With the configuration as described above, the chair 100 according to the present embodiment has the back plate 61 and the upper edge attaching portion 62b hooked on the upper edge portion of the back plate 61 so that the chair 100 is attached to the front surface of the back plate 61. The exterior material 62 arranged, the headrest 8 that is detachably attached to the upper edge portion of the back plate 61 from which the upper edge attaching portion 62b of the exterior material 62 is removed, and the headrest 8 is fixed to the back plate 61 For this purpose, a front abutting member 63 attached to the front surface of the back plate 61 is provided, and the headrest 8 is fixed to the back plate 61 using the front abutting member 63, and the back plate 61 Since the upper edge attaching portion 62b of the exterior material 62 removed from the upper edge portion of the exterior material 62 can be hung on the front contact member 63, the exterior material 62 used in the specification in which the headrest 8 is not attached is used. Even in the specification with the headrest 8 attached It is possible to use, it is not necessary to prepare a plurality of the outer package 62 in response to changes in specifications.

  Further, the front contact member 63 is provided with a latching edge portion 63b simulating the upper edge portion of the back plate 61, and this front contact member 63 is attached to the front surface of the back plate 61. Since the latching edge 63b faces the upper edge of the back plate 61 through a gap in the state, the shape of the exterior material 62 used in the specification without the headrest 8 is utilized. Since there is a gap provided between the front contact member 63 and the back plate 61, the upper edge mounting portion 62b of the bag-shaped exterior member 62 is hung on the front contact member 63. Can be attached. In addition, since the shape of the upper edge portion of the front contact member 63 approximates the shape of the upper edge portion of the back plate 61, the appearance from the front and back of the chair 100 changes so much regardless of the presence or absence of the front contact member 63. Can be configured not to.

  Further, since it has the above-described structure, the first specification X that constitutes the backrest 6 only by the back plate 61, the exterior material 62 on the front surface of the back plate 61, and the upper edge attaching portion 62b thereof are connected to the back plate 61. A second specification Y that is hooked on the upper edge of the plate 61, the headrest 8 is mounted on the upper edge of the back plate 61, and an exterior material 62 is attached to the front surface of the back plate 61 with the upper edge It is possible to realize three different specifications for the use method and the appearance impression in one chair 100, that is, a third specification Z in which the portion 62b is hooked on the front contact member 63.

  Further, the back plate 61 includes a peripheral frame portion 61a1 not having a hole 61d and an intermediate surface portion 61a2 surrounded by the peripheral frame portion 61a1, and the intermediate surface portion 61a2 has a plurality of holes 61d. Since the resin mesh region M and the resin shell region S are alternately arranged, the resin mesh region M and the resin shell region S are arranged alternately. The headrest 8 and the front contact member 63 can be easily attached and detached using the boundary and the hole 61d.

  The present invention is not limited to the embodiment described above, and various modifications can be made.

  Although the present embodiment has been described in detail above, the present invention is not limited to the above-described embodiment, and the specific configurations of other parts can be variously modified without departing from the spirit of the present invention.

The rear perspective view showing the chair concerning the embodiment of the present invention. The front perspective view of the embodiment. The side view of the embodiment. The rear view of the embodiment. The disassembled perspective view which shows the state which removed the exterior | packing material and the front contact member in embodiment of this invention. AA sectional view showing the chair concerning the embodiment. Sectional drawing corresponding to FIG. 6 in the 2nd specification of the chair which concerns on the embodiment. The disassembled perspective view which shows the state which removed the exterior | packing material, the front contact member, and the headrest in embodiment of this invention. The perspective view which shows the chair of the 1st specification which concerns on the embodiment. The perspective view which shows the chair of the 2nd specification which concerns on the embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Chair 61 ... Back board 61a1 ... Peripheral frame part 61a2 ... Middle surface part 61d ... Hole M ... Resin mesh area | region S ... Resin shell area | region 62 ... Exterior material 62b ... Upper edge attaching part 63 ... Front contact member 63b ... Latching edge part 8 ... Headrest

Claims (4)

A back plate, an exterior material disposed on the front surface of the back plate by hooking an upper edge attachment portion on the upper edge portion of the back plate, and an upper edge of the back plate from which the upper edge attachment portion of the exterior material is removed A headrest that is detachably attached to the head portion, and a front contact member that is attached to the front surface of the back plate to fix the headrest to the back plate, and the headrest is formed using the front contact member. A chair configured to be able to hang the upper edge mounting portion of the exterior material, which is removed from the upper edge portion of the back plate, on the front abutting member in a state where is fixed to the back plate.   The front abutting member is provided with a latching edge that has a shape imitating the upper edge of the back plate, and the front abutting member is attached to the front surface of the back plate, The chair according to claim 1, wherein the edge portion is configured to face the upper edge portion of the back plate through a gap.   A specification that constitutes a backrest with only the back plate, a specification in which an exterior material is attached to the front surface of the back plate with its upper edge mounting portion hooked to the upper edge of the back plate, and an upper edge of the back plate 2. The headrest is mounted on a portion, and an exterior material is mounted on the front surface of the back plate, and an upper edge mounting portion is hooked on the front abutting member. Or the chair of 2.   The back plate includes a peripheral frame portion having no holes and an intermediate surface portion surrounded by the peripheral frame portions, and the intermediate surface portion does not have a resin mesh region provided with a plurality of holes and holes. The chair according to claim 3, further comprising a resin shell region, wherein the resin mesh region and the resin shell region are alternately arranged.

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