JP2013236769A - Chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chair capable of disposing a handle in such a position as can be easily held while hardly affected by limitation on the design or structure.SOLUTION: A chair 1 includes: a backrest; and a chair body having a back supporting structure 23 for supporting the backrest in such a way that the backrest can be rocked. The backrest includes an exterior material and a back shape keeping structure 31 for holding the exterior material. The chair adopts a configuration wherein a handle 5 is provided in a part covered with the exterior material in the back supporting structure 23 in such a way as can be held.

Description

  The present invention relates to a chair having a handle.

  Conventionally, as this type of chair, a chair including a backrest and a chair body having a back support structure that supports the backrest so as to be able to perform a locking operation is known (for example, Patent Document 1). See).

  Conventionally, a back support structure such as a back support rod or a back frame exposed to the outside is provided with a connecting portion extending left and right that can be used as a handle. For this reason, if it is intended to be placed near the upper end of the backrest where it is easy to hold the handle, it is necessary to extend the back support structure to the top of the backrest, which is subject to design and structural restrictions. There is a problem.

Japanese Patent No. 4197045

  The present invention focuses on the above points, and an object thereof is to provide a chair that can be placed at a position where the handle can be easily held in a state that is not easily restricted by design or structural design.

  That is, the chair according to the present embodiment is a chair comprising a backrest and a chair body having a back support structure that supports the backrest so as to be able to perform a rocking operation. And a back support structure for holding the exterior material, and a handle is provided in a portion of the back support structure that is covered with the exterior material so that a handle can be gripped. Features.

  In such a case, by attaching a handle to a portion of the back support structure that is covered with the exterior material, the back support structure as described above is extended to the upper part of the backrest. Thus, compared with the case where a handle is attached to the upper end of the back support structure, the number of design changes can be reduced. In other words, it is possible to place the handle at a position where it is easy to hold the handle in a state where it is difficult to be restricted by design or structural design.

  In the present invention, the “back support structure” may be any structure as long as it supports the backrest so as to be able to perform a locking operation. For example, it is replaced with a back support rod or a back support rod. A rigid outer shell or the like is included. Further, the “back-holding structure” may be any member as long as the shape of the backrest is maintained within a certain range. For example, the back inner shell, the back frame, Includes a back frame for shape retention. Furthermore, the “exterior material” in the present invention includes a tension fabric, an outer shell, and the like.

  As an example of a specific configuration of a chair having such a handle, the handle has left and right attachment portions attached to a back support structure via a fastener, and the backrest is A back support structure, and an outer shell that is mounted on the back surface of the back support structure and exposes the portion other than the attachment portion of the handle, and constitutes the exterior material. The thing which coat | covers the said attaching part by is mentioned.

  Further, as a configuration for adjusting the appearance of such a chair, the handle is installed between the left and right attachment parts, the arm part extending rearward from both the attachment parts, and the tips of these arm parts. A holding member and a blindfold member installed between the arm portions, and the outer surface of the blindfold member is continuous with the outer surface of the outer shell.

  Furthermore, as an example of a mounting manner of a handle having such a handle, the back support structure includes a pair of back frames arranged on both sides of the support base, and an upper end portion of the pair of back frames. Each of which has a plate-like mounting bracket on the outer side of the connecting portion between the horizontal member and the back frame, and the mounting bracket and the mounting portion of the handle are overlapped. The handle is attached in a combined state, and the back support structure has a pair of back frames arranged on both sides of the support base, and the handle is inserted into the upper end of the back frame. In this state, the handle is attached to the back frame.

  On the other hand, as another example of a specific configuration of a chair having such a handle, the handle has left and right attachment portions attached to a back support structure via fastening devices, The backrest includes a back support structure, and a tension fabric that covers the back support structure and forms the exterior material in a state where a portion other than the attachment portion of the handle is exposed. The thing which coat | covers the said attaching part with a tension fabric is mentioned.

  According to the present invention, it is possible to place the handle at a position where it is easy to hold the handle in a state where it is difficult to be restricted in design or structural design.

The whole perspective view from the back of the chair of a 1st embodiment of the present invention. The rear view which omitted the leg of the chair of the embodiment. The top view which abbreviate | omitted the leg of the chair of the embodiment. The right view which omitted the leg of the chair of the embodiment. AA line sectional view in FIG. The upper expanded sectional view in FIG. The lower expanded sectional view in FIG. BB sectional drawing in FIG. The disassembled perspective view which shows the attachment aspect of the handle of the embodiment. The perspective view from the lower part which shows the principal part of the embodiment. Action | operation explanatory drawing shown in the center side cross section of the principal part of the embodiment. Action | operation explanatory drawing shown in the center side cross section of the principal part of the embodiment. Action | operation explanatory drawing shown in the side cross section of the principal part of the embodiment. Action | operation explanatory drawing shown in the side cross section of the principal part of the embodiment. Action | operation explanatory drawing shown in the side cross section of the principal part of the embodiment. DD sectional view taken on the line in FIG. The disassembled perspective view which shows the attachment aspect of the handle of other embodiment of this invention. The disassembled perspective view which shows the attachment aspect of the handle of other embodiment of this invention.

<First Embodiment>
Hereinafter, an embodiment in which the present invention is applied to a synchro tilt type office rotary chair 1 will be described with reference to FIGS.

  The chair 1 is movable with respect to the floor. As shown in FIGS. 1 to 16, the chair body 2, the backrest 3 and the seat 4 supported by the chair body 2, and the back And a handle 5 supported by the drool 3.

<Chair body>
As shown in FIGS. 1, 2, 4, 5, 7, and 10 to 16, the chair body 2 is supported by a leg base 21 and is supported by the support base 22. A back support structure 23 that can be tilted backward, a seat support structure 24 disposed above the support base 22, the support base 22, the back support structure 23, and the seat support structure And a synchro-rocking mechanism 25 having 24 as a link element 254. The chair body 2 is configured such that the seat 4 supported by the seat support structure 24 tilts synchronously when the backrest 3 supported by the back support structure 23 tilts backward. It has been done. That is, an operation in which the seat 4 sinks at a constant angle ratio with respect to the backward tilting operation of the backrest 3, in other words, a synchro tilting operation is realized. In association with the synchro-rocking mechanism 25, the reaction force mechanism 26 for self-returning the backrest 3 to the initial position, and the backrest 3 and the back support structure 23 are locked at a predetermined tilting position. The locking mechanism 27 is provided.

<Legs>
As shown in FIG. 1, the leg body 21 includes a leg blade type leg base 212 having casters 211, and leg struts 213 erected at the center of the leg base 212. The leg column 213 is a normal one mainly composed of a gas spring, and the support base 22 is attached to the upper end of the leg column 213.

<Support base>
As shown in FIGS. 2, 4, 5, 7, and 10 to 16, the support base 22 is supported by the leg body 21 so as to be horizontally pivotable and is attached to the leg support 213. A main housing 221 and a sub housing 222 rigidly connected to the main housing 221 are provided. The main housing 221 is made of metal, and includes a bottom wall 223 having a boss portion 228 into which the upper end of the leg support 213 is fitted, and left and right side walls 224 erected from the left and right side edges of the bottom wall 223. It is provided and is open front and rear and upward. The sub-housing 222 is made of metal and has a bottom wall 225 whose base end portion is disposed in the main housing 221 and has a distal end extending forward, and left and right edges raised from the left and right edges of the bottom wall 225. Side walls 226 and ridges 227 extending outward from the upper edges of the both side walls 226. The sub-housing 222 abuts the lower surfaces of the two flanges 227 against the upper edges of the left and right side walls 224 of the main housing 221, and makes the left and right side walls 226 closely contact the inner surfaces of the left and right side walls 224 of the main housing 221. In this state, it is integrated with the main housing 221 by welding or the like.

  The support base portion 22 thus configured supports the back support structure 23 via the main shaft 28 so as to be able to tilt backward, and can rotate the front side of the seat support structure 24 via the front connection shaft 29. And it is supported so that it can slide back and forth. Specifically, the back support structure 23 is connected to both ends of the main shaft 28 that is rotatably passed between the side walls 224 of the main housing 221. Long holes 220 extending in the front-rear direction are provided in the side walls 226 of the sub-housing 222, and the front side of the seat support structure 24 is connected to both ends of the front connecting shaft 29 inserted through the long holes 220. doing. Since the reaction force mechanism 26 and the locking mechanism 27 are provided outside the support base 22, no space for providing these mechanisms is provided in the support base 22. That is, the support base portion 22 of this embodiment is much smaller than the support base portion provided with a reaction force mechanism and the like in the second embodiment to be described later.

<Back support structure>
As shown in FIGS. 5 to 7 and FIGS. 10 to 16, the back support structure 23 has a function as a so-called back support rod. For example, the back support structure 23 forms a pair arranged on both sides of the support base 22. A back frame 231 and a plurality of horizontal members 234, 235, 236 connecting the left and right back frames 231 are provided. The back frame 231 includes a lower frame element 232 that extends rearward with the base end portion 237 supported by the main shaft 28, and an upper frame element 233 that is bent upward from the rear end portion of the lower frame element 232 and extends. It has an L shape when viewed from the side. The lower frame element 232 and the upper frame element 233 are integrally formed by bending a pipe material. The lower frame element 232 is connected by a lower horizontal member 234, and the upper frame element 233 is connected by an intermediate horizontal member 235 and an upper horizontal member 236, respectively. The lower horizontal member 234 has a channel shape opened downward, and both side portions are coupled to the inner side of the lower frame element 234 via welding joints. The intermediate horizontal member 235 and the upper horizontal member 236 have a channel shape opened to the front, and are joined to the back side of the upper frame element 233 via welding joints. Plate-shaped mounting brackets 238 and 230 having bolt holes 238a and 230a are provided on the outer sides of the joint portions of the intermediate horizontal member 235 and the upper horizontal member 236.

<Seat support structure>
As shown in FIGS. 5, 7, and 10 to 15, the seat support structure 24 has a function as a so-called seat receiver and has a disk shape. The front end portion of the seat support structure 24 is provided with a pair of left and right front brackets 241 that hang downward. By attaching these front brackets 241 to both ends of the front connecting shaft 29, The seat support structure 24 is supported on the support base 22 so as to be rotatable and slidable. A rear bracket 242 is formed at the rear end of the seat support structure 24 so as to be paired left and right. The rear bracket 242 is connected to the back support structure 23 via the rear connecting shaft 20. The left and right back frames 231 are rotatably supported. On the lower surface of the seat support structure 24, an armrest attachment structure 243 is attached. Both ends of the armrest mounting structure 243 are extended outward from the left and right ends of the seat support structure 24 so that an armrest (not shown) can be detachably attached to the both ends. It is.

<Synchloro-packing mechanism>
As shown in FIGS. 5, 7, and 10 to 15, the synchro-rocking mechanism 25 includes the support base 22 and the back support that is supported by the support base 22 via a first shaft mounting portion 251. The structure 23 and the front side are supported by the support base 22 via the second pivoting portion 252 and the rear side is supported by the back support structure 23 via the third pivoting portion 253. The seat support structure 24 is provided. The first shaft attachment portion 251 is configured mainly with the main shaft 28, and is a portion on which the back support structure 23 is rotatably attached to the support base portion 22. The second shaft attachment portion 252 is configured mainly with the front connection shaft 29, and the seat support structure 24 is attached to the support base portion 22 so as to be able to rotate and slide back and forth. Part. The third shaft mounting portion 253 is configured mainly with the rear connecting shaft 20, and is a portion on which the seat support structure 24 is rotatably mounted with respect to the back support structure 23. It is. In other words, the synchro-rocking mechanism 25 includes three link elements 254 including the support base 22, the seat support structure 24, and the back support structure 23 in the first, second, and third shafts. It is configured by being axially attached via attachment portions 251, 252 and 253.

<Reaction mechanism>
As shown in FIGS. 1, 2, 4, 5, 7, and 10 to 15, the reaction force mechanism 26 self-returns the back support structure 23 to the initial position before the backward tilting operation. It is provided outside the support base 22. More specifically, the reaction force mechanism 26 is provided between the seat support structure 24 and a link element 254 other than the seat support structure 24 constituting the synchro-rocking mechanism 25. is there. In this embodiment, the reaction force mechanism 26 is provided between the seat support structure 24 and the back support structure 23, and supports the one end 264 on the seat support structure 24. A link element 254 other than the seat support structure 24, that is, a rod 261 that penetrates the back support structure 23 and extends the other end 265 to the outside, and a receiver provided on the other end 265 of the rod 261 A member 262 and an elastic body 263 provided between the receiving member 262 and the link element 254 other than the seat support structure 24, that is, the back support structure 23 are provided.

  As shown in FIGS. 5, 7, and 10 to 15, the rod 261 has an upper end on one end 264 side supported on the rear end of the seat support structure 24, and the other end 265 side has the other end 265 side. A male screw portion 266 is provided at a lower end portion. The rod 261 is inserted through a through-hole 239 provided in the lower horizontal member 234 of the back support structure 23, and the lower end protrudes below the lower horizontal member 234.

  As shown in FIGS. 1, 2, 4, 5, 7, and 10 to 15, the receiving member 262 can be screwed into and out of a male threaded portion 266 provided at the other end 265 of the rod 261. The cover member 262 is also provided with a cover 267 that also serves as a grip surrounding the elastic body 263. Specifically, the receiving member 262 includes a receiving tray 268 that receives the lower end portion of the elastic body 263, a nut 269 that is screwed to the male threaded portion 266 of the rod 261 so as to support the receiving tray 268 from the lower side, A stopper 260 provided at the lower end of the rod 261 to prevent the nut 269 from coming off from the male threaded portion 266, and a cover 267 that is fixed to the nut 269 and covers the outer periphery of the tray 268 and the elastic body 263. It becomes. The tray 268 is made of a sheet metal material, and the cover 267 is made of a synthetic resin.

  As shown in FIGS. 5, 7, and 10 to 15, the elastic body 263 is a plurality of compression coil springs 263 a and 263 b having different diameters and having an axial center aligned with the axial center of the rod 261. Specifically, the elastic body 263 is first wound between the receiving tray 268 of the receiving member 262 and the lower horizontal member 234 of the back support structure 23 while being wound around the rod 261. The compression coil spring 263a and the lower horizontal member of the back support structure 23 and the receiving plate 268 of the receiving member 262 are positioned in an annular space formed between the first compression coil spring 263a and the rod 261. 234 and a second compression coil spring 263b interposed therebetween. The first compression coil spring 263a and the second compression coil spring 263b are wound in different directions.

<Locking mechanism>
As shown in FIGS. 5, 7, and 10 to 16, the locking mechanism 27 is for locking the back support structure 23 at a predetermined tilting position, and is near the outside of the support base 22. And a connecting member 271 that rigidly couples the two back frames 231 and an engagement that is supported by the support base 22 so as to be pivotable in the front-rear direction via an operation shaft 272 and engageable with a predetermined portion of the connecting member 271. A member 273, and an operating means 274 for operating the engaging member 273 between an engaging position (B) for engaging the connecting member 271 and a retracted position (A) where the engaging member 271 cannot be engaged with the connecting member 271; A moderation mechanism 275 for selectively holding the engagement member 273 at either the engagement position (B) or the retracted position (A) is provided.

  As shown in FIGS. 7 and 10 to 15, the connecting member 271 has a metal plate shape. In the present embodiment, the connecting member 271 has a rectangular shape having a substantially horizontal upper edge 61 and lower edge 62. belongs to. The left and right ends of the connecting member 271 are rigidly connected to the inside of the back frame 231 via welding joints. An engagement hole 64 is formed in the intermediate portion 63 located between the upper edge 61 and the lower edge 62 of the connecting member 271.

  As shown in FIGS. 7 and 10 to 16, the engaging member 273 has a base end portion 237 fixed to the operation shaft 272 and is disposed at a rear opening end portion of the main housing 221 of the support base portion 22. The moving plate 65 and a claw 66 projecting rearward from the rotating end of the rotating plate 65 are provided. The engaging member 273 is made of metal, and the rotating plate 65 and the claw 66 are integrally formed.

  As shown in FIGS. 1, 2, 4, 10, and 16, the operating means 274 is for applying an operating force in the rotational direction to the operating shaft 272, and bends one end of the operating shaft 272. And a gripping portion (not shown) for placing the hand on the bent portion 67.

  As shown in FIGS. 7 and 10 to 16, the moderation mechanism 275 is provided on the inner surface of the support base 22 and engages with the outer edge of the rotating plate 65, and the moderation element 68 is elastically supported. The elastic support element 69 is provided. Specifically, the elastic support element 69 includes a mounting base 691 attached to the inner surface of the side wall 224 of the main housing 221 of the support base 22 and an elastic wall 692 supported by the mounting base 691 and elastically deformed in the thickness direction. Therefore, the moderating element 68 having a hemispherical shape is provided on the side opposite to the mounting base 691 of the elastic wall 692. The mounting base 691, the elastic wall 692, and the moderation element 68 are integrally formed of synthetic resin. When the engaging member 273 is in the retracted position (A), the moderation element 68 is engaged with the back surface 651 side of the rotating plate 65. When the rotating plate 65 is rotated backward to move the engaging member 273 to the engaging position (B) from this state, the rotating plate 65 is biased and elastically supported by the elastic wall 692. The moderation element 68 is temporarily retracted to the side, and when the engagement member 273 reaches the engagement position (B), the moderation element 68 is elastically restored and engaged with the front surface 652 side of the rotating plate 65. It is supposed to be.

<Backrest>
As shown in FIGS. 1 to 8, the backrest 3 is supported by the back support structure 23 of the chair body 2, and includes an exterior material 32 and a back support structure that holds the exterior material 32. And a body 31.

  As shown in FIGS. 5 to 8, the back support structure 31 has a form called a so-called inner shell, and is integrally formed of a synthetic resin such as nylon. The back support structure 31 includes a shell body 33 that defines the overall shape of the backrest 3, a rib 34 that reinforces the back surface of the shell body 33, and a back frame for mounting the back support structure 23. And an attachment portion 35. The back frame attachment portion 35 is formed by forming a boss portion (not shown) having a female screw hole (not shown) at a portion corresponding to the bolt hole 238a provided in each bracket 238 of the intermediate horizontal member 235, and the upper horizontal member. A boss portion 361 having a female screw hole 362 is also formed in a portion corresponding to the bolt hole 230 a provided in the mounting bracket 230 of 236.

  As shown in FIGS. 1 to 8, the exterior material 32 covers a cushion 37 attached to the front surface of the back support structure 31 and the periphery of the cushion 37 and the back support structure 31. A tension fabric 38 and an outer shell 39 provided on the back surface of the back support structure 31 so as to hide the edge 381 of the tension fabric 38 are provided. The edge portion 381 of the upholstery 38 is turned to the back side of the back support structure 31 and is fixed to the back support structure 31 using a tacker (not shown) or the like. The outer shell 39 is made of synthetic resin, and includes an engaging claw 391 in the vicinity of the peripheral edge portion of the front surface portion. The outer shell 39 is attached to the back support structure 31 by elastically engaging the engaging claws 391 with the outer shell attachment portion 30 provided in the vicinity of the peripheral edge 381 of the back support structure 31. It has been. A handle attachment hole 392 for allowing the handle 5 to pass therethrough is provided in the upper half of the outer shell 39 so as to avoid interference with the handle 5.

<Za>
As shown in FIGS. 1 to 5 and 7, the seat 4 is supported by the seat support structure 24 of the chair body 2, and includes an exterior material 42 and a seat-holding shape that holds the exterior material 42. Structure 41 for use. The structure 41 for the seat shape is a so-called inner shell, and is integrally formed of a synthetic resin such as nylon. The exterior material 42 includes a cushion 43 attached to the upper surface of the seat retaining structure 41, and a tension fabric 44 that covers the cushion 43 and the periphery of the seat retaining structure 41.

<Hands>
As shown in FIGS. 1 to 6, 8, and 9, the handle 5 is provided at a portion of the back support structure 23 that is covered with the exterior material 32, and has left and right attachment portions. 51, an arm portion 52 extending rearward from both mounting portions 51, a gripping member 53 laid between the distal ends of these arm portions 52, and a blindfold member laid between the base ends of the arm portions 52 54, and is integrally formed of synthetic resin.

  The handle 5 does not protrude upward from the upper edge of the backrest 3 of the chair body 2. In other words, the upper edge of the handle 5 is set below the upper edge of the backrest 3.

  As shown in FIG. 9, each mounting portion 51 has a bolt hole 511 that forms a pair in the vertical direction at the lower end portion, and extends in the vertical direction along the back surface of the back support structure 31 that is the inner shell. It is a plate. Then, bolts 512 as fastening members inserted through the bolt holes 511 of the mounting portions 51 are inserted into the bolt holes 230a of the upper horizontal member 236 of the back support structure 23 and overlap the upper horizontal member 236. The handle 5 is attached to the back support structure 23 by being screwed into the female screw holes 362 of the boss portions 361 of the back frame attachment portion 35. In other words, the chair 1 includes the outer shell 39 attached to the back surface of the inner shell in a state where the portion other than the attachment portion 51 of the handle 5 is exposed.

  As shown in FIGS. 1 to 3, 8, and 9, each arm portion 52 passes through left and right end portions of a handle mounting hole 393 provided in the outer shell 39, and both left and right ends of the handle mounting hole 393. The handle 5 and the outer shell 39 can be positioned by engaging with each other.

  As shown in FIGS. 1 to 6, 8, and 9, the gripping member 53 is a belt-like member whose center portion curves in a direction protruding backward, and the curvature in the plan view is the backrest 3 in the plan view. It is larger than the curvature of the upper edge, and has a shape in which the vertical dimension is gradually increased from the center toward the outside in the rear view.

  As shown in FIGS. 1, 3, 5, 6, 8, and 9, the blindfold member 54 has a shape corresponding to the opening shape of the handle mounting hole 392 of the outer shell 39. In a state where the 52 and the outer shell 39 are positioned, the back surface 541 of the blindfold member 54 and the back surface 394 of the outer shell 39 are set to be flush with each other. A cavity 7 is provided between the blindfold member 54 and the gripping member 53 so as to communicate vertically.

<Operation description>
Next, the operation of the chair 1 will be described with reference to FIGS.

  When a rearward load is applied to the backrest 3 from the initial state shown in FIGS. 11, 13, and 16, the back support structure 23 is formed with the first shaft attachment portion 251 configured by the main shaft 28 of the support base 22. Tilt back around. When the back support structure 23 is tilted backward, the rear end side of the seat support structure 24 pivotally attached to the lower frame element 232 of the back support structure 23 via the third shaft mounting portion 253 is It moves downward while moving backward. At that time, the front end side of the seat support structure 24 supported by the support base portion 22 via the second shaft mounting portion 252 rotates slightly while moving backward. As a result, as shown in FIG. 12 and FIG. 15, the backrest 3 is synchronized to rotate backward so that the seat 4 sinks backward while tilting backward. At that time, the distance between the rear end portion of the seat support structure 24 and the lower frame element 232 of the back support structure 23 is increased, and the elastic body 263 of the reaction force mechanism 26 is compressed to accumulate the repulsive force. It will be. That is, when the distance between the rear end portion of the seat support structure 24 and the lower frame element 232 of the back support structure 23 is increased, the seat support structure 24 is supported via the rod 261. The distance between the receiving member 262 and the lower horizontal member 234 provided on the lower frame element 232 of the back support structure 23 is reduced, and the elastic body 263 is compressed.

  When the rearward load acting on the backrest 3 is released or reduced, the repulsive force of the elastic body 263 performs an operation opposite to the above-described operation, and the backrest 3 rotates and returns to the front. At the same time, the seat 4 returns to the initial position. The repulsive force can be adjusted by changing the preload of the elastic body 263 by operating the cover 267 also serving as a grip and adjusting the position of the receiving member 262.

  If the engaging member 273 of the locking mechanism 27 is held at the retracted position (A) by the moderation mechanism 275, the above-described synchronization operation can be performed freely.

  If it is desired to stop the synchro operation halfway, the operation member 274 may be operated at the desired tilt position to rotate the engagement member 273 to the engagement position (B). That is, as shown in FIG. 16, when the operating member 274 is operated at the initial position to operate the engaging member 273 from the retracted position (A) to the engaging position (B), the pawl 66 of the engaging member 273 is moved. The backrest 3 is engaged with the lower edge 62 of the connecting member 271 provided at the base end of the back support structure 23, and the backrest 3 is locked at the initial position as shown in FIGS. Thereby, the seated person can take a working posture. Further, when the operating member 274 is operated from the retracted position (A) to the engaged position (B) by operating the operating means 274 at an intermediate tilt position between an initial position and a final tilt position described later, the engagement member As shown in FIG. 14, the backrest 3 is locked in the intermediate rearward tilted position as the claw 66 of the 273 engages with the engagement hole 64 of the connecting member 271 provided at the proximal end of the back support structure 23. Is done. Thereby, the seated person can take an intermediate posture. Further, when the operating member 273 is operated from the retracted position (A) to the engaged position (B) by operating the operating means 274 at the last tilted position, the pawl 66 of the engaging member 273 is moved to the back support structure 23. 13 and FIG. 16, the backrest 3 is locked at the last tilted position. Thereby, the seated person can take an easy posture.

<Effect of this embodiment>
As described above, the chair 1 according to the present embodiment has the back support structure 23 placed on the back by attaching the handle 5 to a portion of the back support structure 23 covered with the exterior material 32. As compared with the case where a handle is attached to the upper end of the back support structure 23 by extending to the top of the back support structure 23, the number of design changes can be reduced. In other words, the handle 5 can be placed at a position where it is easy to hold in a state where it is difficult to be restricted by design or structural design. Moreover, since the attachment part 51 of the handle 5 is coat | covered with the exterior | packing material 32, it can also arrange | position appearance without making the attachment part 51 of the handle 5 conspicuous.

  Moreover, since the upper edge of the handle 5 is set below the upper edge of the backrest 3, the handle 5 can be easily held and strong. For example, when the handle 5 is compared with a hanger that can be attached to the backrest, the hanger can be placed on the floor even when the clothes are tilted backwards while hanging relatively long clothes such as a half coat. It must be installed in a relatively high position so that it does not stick. Therefore, in the conventional hanger, the base end portion of a relatively long arm is attached to the backrest, and the hanger body is positioned at the distal end portion of the arm at a position away from the top after the backrest. Therefore, it is usual to provide only the minimum strength capable of holding clothing. On the other hand, it is necessary for the handle 5 to have both the arrangement at a position where it is easy to hold and the strength with which the handle 1 can be moved by holding the handle 5. That is, the handle 5 of this embodiment is set above the back of the backrest 3 to ensure ease of holding, and the arm portion 52 is set shorter than the arm of the hanger to ensure strength. Yes. If the arm portion 52 of the handle 5 is relatively short, it is positioned near the backrest 3. If the upper edge of the handle 5 is set higher than the upper edge of the backrest 3, the backrest There is a possibility that the handle 5 hits the seated person's shoulder or head when the head 3 is tilted backward. Therefore, the handle 5 of the present embodiment is positioned at a position lower than the upper limit of the height of the backrest 3. In other words, the upper edge of the handle 5 is set below the upper edge of the backrest 3.

  Further, the handle 5 has left and right attachment portions 51 attached to the back support structure 23 via fasteners, and the backrest 3 includes a cushion 37 and the cushion 37 from the back side. A back-supporting structure 31 to be held and an outer shell which is mounted on the back surface of the back-supporting structure 31 and exposes the portion other than the attachment portion 51 of the handle 5 and constitutes the exterior material 32 39, and the outer shell 39 covers the mounting portion 51. Therefore, the backrest 3 of the widely adopted aspect including the back support structure 31, the cushion 37, and the outer shell 39 is provided. In the chair 1 having, the handle 5 described above can be realized.

  In addition, the handle 5 includes left and right attachment portions 51, arm portions 52 extending rearward from both attachment portions 51, a gripping member 53 erected between the tips of the arm portions 52, The blindfold member 54 is provided between the arm portions 52, and the blindfold member 54 has an outer surface continuous with the outer surface 394 of the outer shell 39. The attachment site for the back support structure 23 can be covered, and the outer surface of the blind member 54 is continuous with the outer surface 394 of the outer shell 39, so that the appearance can be adjusted.

  The present invention is not limited to the embodiment described above.

  For example, in the embodiment described above, the backrest exterior material includes a cushion attached to the front surface of the back support structure, a tension covering the periphery of the cushion and the back support structure, An outer shell provided on the back surface of the back support structure so as to hide the edge of the upholstery, and the attachment portion of the handle is covered by the outer shell. For example, FIG. The embodiment shown is also conceivable. In the following description, the same names and symbols are assigned to the portions corresponding to those in the first embodiment described above. In this embodiment, the backrest 32 is attached to the front surface of the back support structure (not shown), and the stretch covering the cushion and the periphery and back of the back support structure (not shown). 8 and a configuration in which the outer shell is not provided, a configuration in which the attachment portion 51 of the handle 5 is covered with the tension material 8 is conceivable. The handle 5 of this mode has the same configuration as the handle 5 of the first embodiment described above except that the handle 5 is not provided. In addition, on the back surface of the upholstery 8, a handle passage hole 81 for allowing the arm portion 52 of the handle 5 to pass therethrough, and an attachment to the back support structure provided between the handle passage holes 81 are provided. And a slit 82 through which the gripping member 53 can pass. And the site | part of the up-and-down both sides of the said slit 82 coat | covers the said back support structure in the state attached to the back support structure. And the site | part under the slit 82 of this tension | tensile_strength 8 covers the attaching part 51 of the handle 5 in the state attached to the structure for back support shape. In this aspect, other parts have the same configuration as the chair of the first embodiment described above.

  Further, in the above-described embodiment, the attachment portion of the handle is attached in a state of being superimposed on the upper horizontal member of the back support structure, but as described below, the lower end portion of the handle is attached. You may employ | adopt the thing of the aspect inserted and attached to the upper end of the back frame of the said structure for back support. In the following description, parts corresponding to those in the first embodiment described above are assigned the same name and reference numeral. As shown in FIG. 18, the handle 5 of this aspect is installed between the left and right attachment portions 51, the arm portion 52 extending rearward from both the attachment portions 51, and the tips of these arm portions 52. A holding member 53 and a blindfold member 54 provided between the base ends of the arm portion 52 are provided, and the whole is integrally formed. The arm 52, the gripping member 53, and the blindfold member 54 have the same configuration as that of the handle 5 according to the first embodiment described above. The mounting portion 51 can be inserted into the upper end of the back frame 231 of the back support structure 23, and has an insertion portion 55 having a female screw hole 55a, and a plate-like connecting portion formed by fixing the insertion portion 55 to the lower surface. 56 and an upright portion 57 extending upward from the connection portion 56 and connected to the arm portion 52 at the upper end. On the other hand, a screw insertion hole 233a capable of overlapping with the female screw hole 55a is provided at the upper end of the back frame 231. Then, in a state where the screw insertion hole 233a of the back frame 231 and the female screw hole 55a of the mounting portion 51 are overlapped, a male screw member, which is a fastening tool (not shown), is screwed to the female screw hole 55a. The frame 231 and the handle 5 are connected. And the attachment part 51 of a handle is coat | covered with the outer shell 39 similarly to 1st Embodiment mentioned above. In this aspect, other parts have the same configuration as the chair of the first embodiment described above.

  Also in these aspects, since the attachment portion 51 of the handle 5 is covered with the exterior material 32, the appearance can be adjusted without making the attachment portion 51 of the handle 5 conspicuous, and the structure for supporting the back is also provided. Compared with the case where the handle 23 is extended to the top of the backrest 3 and a handle is attached to the upper end of the back support structure 23, the number of design changes can be reduced. In other words, the handle 5 can be placed at a position where it is easy to hold in a state where it is difficult to be restricted by design or structural design.

  Further, in the first embodiment described above, the outer surface of the blindfold member is flush with the outer surface of the outer shell, but the shape of the outer surface of the blindfold member protruding outward from the outer surface of the outer shell, etc. The shape may be adopted.

  In addition, various modifications may be made without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Chair 2 ... Chair main body 23 ... Back support structure 231 ... Back frame 236 ... Horizontal member 230 ... Mounting bracket 3 ... Backrest 31 ... Back support structure 32 ... Exterior material 39 ... Outer shell 5 ... Holding Hand 51 ... Mounting part 52 ... Arm part 53 ... Gripping member 54 ... Blindfold member

Claims (6)

A chair comprising a backrest and a chair body having a back support structure that supports the backrest so that the backrest can be rocked.
The backrest includes an exterior material and a back support structure that holds the exterior material, and grips a handle at a portion of the back support structure that is covered with the exterior material. A chair characterized by being provided. The handle is one in which left and right attachment portions are attached to the back support structure via fastening devices,
The backrest is a back support structure, and an outer shell that is attached to the back surface of the back support structure and exposes the portion other than the attachment portion of the handle and constitutes the exterior material. The chair according to claim 1, wherein the mounting portion is covered with the outer shell. The handle includes left and right attachment portions, arm portions extending rearward from both attachment portions, a gripping member laid between the tips of these arm portions, and a blindfold member laid between the arm portions. The chair according to claim 2, wherein an outer surface of the blindfold member is continuous with an outer surface of the outer shell. The back support structure includes a pair of back frames disposed on both sides of a support base, and a horizontal member that connects upper ends of the pair of back frames, and the horizontal member and the back A plate-like mounting bracket is provided outside the coupling portion with the frame, and the handle is attached in a state where the mounting bracket and the mounting portion of the handle are overlapped. 3. The chair according to 3. The back support structure includes a pair of back frames disposed on both sides of a support base, and the handle is attached to the back frame with the handle inserted into the upper end of the back frame. Item 1, 2 or 3 chair. The handle is one in which left and right attachment portions are attached to the back support structure via fastening devices,
The backrest includes a back support structure, and a tension fabric that covers the back support structure and exposes the portion other than the attachment portion of the handle and constitutes the exterior material, The chair according to claim 1, wherein the attachment portion is covered with the upholstery.

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