JP2011172689A - Chair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a chair for easily and comfortably taking baggages in and out while easily positioning the baggages near a sitting person. <P>SOLUTION: The chair includes a leg body 1, a support base part supported at the upper part of the leg body 1 and capable of being turned horizontally, a seat 3 disposed on the support base part, and a shelf plate 6 disposed on the support base part. Then, the chair is provided with a mounting surface operating mechanism 7 for operating a baggage mounting surface 6a on the shelf plate 6 between a housing position (X) positioned on the inner side relative to the occupancy range of the seat in the plan view and a projecting position (Y) projecting sideways from the occupancy range. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a chair that can be suitably used in a free address type office among chairs that are rotatably supported in a horizontal direction.

  A free address office (for example, see the following non-patent document) that employs a free address format office layout is said to have started in the late 1980s. In the free address office, a cafe-style floor will be constructed with desks and chairs that can be used freely by anyone, without fixing the seats of individual employees.

  In the case of such a free address office, the office worker takes out necessary documents, personal computers, etc. from a locker assigned to the worker in advance, brings them into the office, sits in a vacant seat and works. To do.

  On the other hand, some of the chairs used so far have been provided with necessary hangers, such as a hanger that can be used to hang the jacket on the upper end of the back, or the space under the armrest or below the seat. Various chairs are also proposed that are configured so as to be able to store the belongings of the seated person including the stool (see, for example, Patent Document 1).

Japanese Utility Model Publication No. 7-25855

Hitoshi Shimamura, Tetsuya Yamada, Takeshi Sugiyama, Minari Iwata, “Study on Free Addressing of Research Office Space Part 1: Analysis of Effects of Free Address Office Using Folding Mobile Desk by User Satisfaction Evaluation”, Architectural Institute of Japan Planning-related papers, Architectural Institute of Japan, July 30, 1998, No. 509, pp. 129-134 Kazuyuki Iwakiri, Ippei Mohri, Midori Toyama, Kaori Nose, Takanori Ochiai, Hiroshi Saito, Susumu Saito, “Attitudes and physical fatigue of VDT workers in free address office layouts”, Journal of Occupational Health, Japan Industrial Hygiene Society, January 20, 2006, Vol. 48, pp. 7-14

  Here, considering the actual work of the office worker in the free address office as described above, the chair is not limited to the necessary documents as described above, and various kinds of luggage can be positioned close to the chair. Among them, there is a demand for a chair that can be easily put in and out. That is, even a chair having a drawer that is pulled out and used in front of the seat as described in Patent Document 1 is required to have a chair that can satisfy the above-described requirements. However, in the case of the document cited, for example, when trying to take out the luggage in the drawer during the work of the seated person, the seated person either stands up once or retracts his / her own leg to the side once. Must be taken out. In addition, in the office, normally, when the chair is not used, the seat of the chair is accommodated in the lower limb space of the desk, but if you try to take out the luggage in the above drawer from such a state, The chair seat must be removed from the lower limb space of the desk.

  The present invention focuses on such points, and an object of the present invention is to provide a chair that can easily and suitably load and unload luggage while easily positioning the luggage near a seated person.

  In order to achieve such an object, the present invention takes the following measures. That is, the chair according to the present invention includes a leg, a support base rotatably supported by the leg, and a seat disposed on the support base, wherein the support base and the seat A luggage storage surface is provided between the luggage storage surface and the back surface of the seat, and a luggage storage space is formed between the luggage storage surface and the back surface of the seat so that the luggage can be inserted and removed freely. It is characterized by having a mounting surface operating mechanism that operates between a housing position positioned inside the range and a protruding position protruding sideward or rearward from the occupied range.

  Here, the load placement surface may be, for example, the upper surface of a shelf plate that can be accessed from the horizontal direction, or the upper surface of a bottom plate of a drawer that is configured to be inaccessible at the storage position. That is, various aspects are conceivable as long as luggage can be placed on the surface.

  If this is the case, it is possible to easily take in and out the luggage on the luggage placement surface even when the seated person is working or the chair seat part is stored in the lower limb space of the desk. it can. By doing so, in a free address office, a chair that can effectively contribute to a seated person's wasteless operation by smoothly handling the luggage during the seated person's work or at the time of sitting or leaving the seat Can do.

  And in order to be able to place the luggage stably in relation to the movement of the seat by the movement of the seated person, it is desirable that the luggage placing surface is supported by the support base.

  And as a structure for taking out the load easily, there can be mentioned an aspect in which the placement surface operating mechanism slides the load placement surface between the accommodation position and the protruding position.

  And in order to implement | achieve the mounting surface operation | movement mechanism which is easier to handle, it is desirable to provide a positioning means for positioning the luggage mounting surface at the storage position or the protruding position.

  As a specific configuration for realizing smooth operation of the mounting surface operating mechanism, a rail provided with the mounting surface operating mechanism on one of the support base and the shelf, a slider provided on the other, Preferably, the positioning means includes an opening provided in the rail and a rolling element provided in the slider and capable of fitting into the opening at the storage position or the protruding position.

  In particular, as a configuration for easily loading and unloading luggage while sitting or working by a seated person, the loading surface operating mechanism has a mode in which the luggage loading surface protrudes laterally from the occupation range of the plane view. Can be mentioned.

  On the other hand, the chair of the present invention further includes a backrest that is supported by a support base and supports the rear end portion of the seat, and interlocks the backward tilting operation of the backrest and the lowering operation of the rear end portion of the seat. Even if it is further provided with a synchro tilt mechanism for this purpose, it can be suitably applied.

  In a chair equipped with a synchro tilt mechanism, if the luggage placement space is formed so that the rear vertical dimension is larger than the front vertical dimension, the luggage is less likely to interfere with the seat. The operation of the surface operation mechanism is not impaired.

  In particular, as one of the preferred embodiments having both the synchro tilt mechanism and the placement surface operation mechanism, the backrest has a back frame supported so as to be tiltable with respect to the support base, and the luggage placement space. Is a space that is open to the left and right sides surrounded by the back frame, the support base, and the seat in a side view, and the placement surface operating mechanism is mounted on the load sideways from the occupation range of the plan view seat. The aspect which makes a mounting surface protrude can be mentioned.

  In order to make it possible to smoothly perform the sync tilt operation and the operation of the load placement surface without causing the back frame and the load placement surface to interfere with each other, the back frame is moved backward from the support base. An example is one having an extending front-rear direction part and an up-down direction part extending upward from the rear end of the front-rear direction part, and arranging the shelf plate above the front-rear direction part.

  In the case of such an aspect in which the load placement surface is moved sideways, the rear end of the shelf is positioned in front of the rear end of the front-rear direction portion, and the shelf rises upward at the rear end. If the section is provided, it is possible to effectively avoid unexpected dropping off of the luggage to the rear side.

  In addition, if the shelf plate is provided with a rising portion that rises from the left and right edge portions of the shelf plate, it is possible to suitably prevent the load from falling off during the operation of the luggage placement surface and the operation of the chair. Become.

  According to the present invention, it is possible to easily take in and out the luggage on the luggage placement surface even when the seated person is working or even when the seat portion of the chair is stored in the lower limb space of the desk. As a result, it is possible to provide a chair that can effectively contribute to a lean operation of a seated person in a free address office.

The external view of the chair which concerns on 1st Embodiment of this invention. FIG. The structure explanatory view of the chair concerning the embodiment. Another structure explanatory view of the chair concerning the embodiment. Explanatory drawing of the principal part which concerns on the same embodiment. Other principal part explanatory drawing which concerns on the same embodiment. FIG. 7 is an enlarged view illustrating FIG. 6. Sectional drawing of the principal part which concerns on the same embodiment. The top view which concerns on the modification 1 of the embodiment. The top view concerning the modification 2 of the embodiment. The side view of the chair which concerns on 2nd Embodiment of this invention. The rear view. The schematic diagram which concerns on the modification of the embodiment.

<First Embodiment>
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 to 7, the chair includes a leg 1, a support base 2 that is supported on the upper part of the leg 1 and can be turned horizontally, and a seat 3 disposed on the support base 2. , A backrest 4 provided integrally extending upward from the rear end of the seat 3, an armrest 5 provided extending laterally from the side of the backrest 4, and the support base 2. The shelf board 6 is provided. In the chair according to the present embodiment, a luggage placement surface 6a is provided between the support base 2 and the seat 3, and the luggage can be inserted and removed freely between the luggage placement surface 6a and the back surface of the seat 3. A luggage storage space S is formed. That is, the chair according to the present embodiment has a seat 3 supported by the support base 2, and has a space between the seat 3 and the seat 3 that is spaced upward from the support base 2. By providing the luggage placement surface 6a, the space can be effectively used as the luggage placement space S. Further, in the present embodiment, the armrest 5 is formed by taking it out almost horizontally forward from a predetermined location above the seat 3 in the backrest 4. In other words, in the present embodiment, as a configuration in which the armrest 5 does not interfere with the luggage storage space S, a configuration in which the armrest 5 does not disturb the loading / unloading of the luggage is applied.

  Hereinafter, the structure of the chair which concerns on this embodiment is demonstrated.

  As shown in FIG. 1, the leg 1 includes a leg blade type leg base 12 having casters 11, and a leg column 13 erected at the center of the leg base 12. The leg support 13 is a normal one mainly composed of a gas spring, and the support base 2 is attached to the upper end of the leg support 13.

  As shown in the figure, the support base 2 is supported by the leg 1 so as to be able to turn horizontally, and an operation for operating a gas spring provided on the leg column 13 to adjust the vertical position of the seat 3. The lever 24 includes an upper surface 25 having a flat upper side, and an outer peripheral surface 26 which is a standing surface provided from the upper side to the rear side. In the present embodiment, the seat 3 is fixed to the front side of the support base 2, but the backrest provided integrally with the seat 3 and the seat 3 using a means such as a torsion bar at a place where the seat 3 is supported. 4 may be configured to be lockable. In the present embodiment, the operation lever 24 is provided so as to protrude forward or frontward in plan view from the upper surface 25, so that the left and right sides of the luggage placement space S are not blocked, and the luggage is not obstructed. Yes.

  As shown in FIG. 1, the seat 3 is formed by tensioning a seating ground 36 between a pair of seat frames 35. In the present embodiment, a front transverse beam 34 having a U-shape in front view is provided at the front end of the seat 3, and a mode in which the seat frame 35 is supported by the front transverse beam 34 in a tensioned state is applied. In this embodiment, the seat frame 35 constitutes a frame F by being provided integrally with the back frame 45 of the backrest 4. In addition, the seating fabric 36 is formed integrally with the backresting fabric 46 of the backrest and constitutes the fabric M.

  As shown in the figure, the backrest 4 is obtained by stretching a backrest ground 46 constituting the front face of the backrest 4 on the front face of a pair of back frames 45. The back frame 45 imparts an appropriate tension to the back ground 46 by interposing a lower horizontal beam 47 at the lower end side and an upper horizontal beam 48 at the upper end. Further, the lower horizontal beam 47 is provided with the armrest 5 integrally by bringing the elbow strut 51 forward from both sides and forming an elbow rest 52 on the distal end side of the elbow strut 51. On the other hand, the upper horizontal beam 48 is integrally formed with a hanger 48a that hangs downward.

  The shelf board 6 is supported by the support base 2 via a placement surface operating mechanism 7 described later, and the top surface is a load placement surface 6a on which a load or the like can be placed. In the present embodiment, slider attachment portions 65 for fixing a slider 73 described later are provided at four positions on the front and rear sides of the shelf board 6. Ribbings 66 for reinforcing the shelf board 6 are provided in front and rear positions avoiding the rails 72 in the left-right direction of the lower surface of the shelf board 6. The height of the rib 66 is set lower than that of the rail 72. By doing so, the rib 66 makes the shelf plate 6 itself difficult to bend, and prevents the rib 66 from interfering with the upper surface of the mounting portion 71 when the shelf plate 6 slides.

  Therefore, the chair according to the present embodiment has a storage position (X) between the support base 2 and the shelf board 6 in which the luggage placement surface 6a is positioned inside the occupation range of the plane view seat, and the occupation range. It is assumed that a mounting surface operating mechanism 7 that operates between the protruding position (Y) protruding sideward is provided.

  The mounting surface operation mechanism 7 includes a rail attachment portion 71 for attaching the rail 72 to the support base 2, a rail 72 for sliding the shelf plate 6, and a sliding movement of the shelf plate 6 along the rail 72. The slider 73 has a stay 74 provided so as to connect the lower surface of the rail 72 and the side surface of the mounting portion 71. The rail support 71 is fixed to the support base 2 by being fitted to a rail mounting claw 71 a that protrudes from the upper surface side and engages and fixes to the rail 72, and the upper surface 25 and the outer peripheral surface 26 of the support base 2. Mounting portion 71b.

  The rail 72 is provided with slits 72a for fixing to the rail support portion 71, positioning holes 72b which are opened at four positions on the bottom surface of the rail 72, and both ends folded back from above to inward. And a folded portion 72c. Specifically, the rail 72 is mainly composed of a resin extruded material having a C-shaped cross section as shown in a partially enlarged view in FIG. In one rail 72, positioning holes 72b are provided at positions where the steel balls 6 are fitted in a total of four positions, that is, the positions where the storage positions of the left and right ends and the shelf 6 are determined. At both left and right end portions of the rail, both ends of the portion constituting the bottom surface are cut out and formed to extend to the left and right with dimensions larger than the height of the rail, and a folded portion is formed by this cut out resin portion. . That is, the resin part extending in the left-right direction is folded back so as to be pushed into the C-shaped cross section, and fitted to a pair of cuts 72d provided at opposite edges of the C-shaped cross section in the vicinity of the left and right ends of the rail. As shown, the folded portion 72c is formed. When the shelf 6 is slid to the left and right ends by the folded portion 72 c, the folded portion 72 c serves as a lid so that the slider 73 hits and stops, and the shelf 6 cannot come out from the rail 72 to the left and right outwards. It is like that. Moreover, the positioning hole 72b in which the steel ball 73b fits is provided in the position, and can maintain the state which stopped the shelf 6 temporarily at the protrusion position (Y) which pulled out the shelf 6 to both right and left ends. .

  The slider 73 includes a slider main body 73a that is screwed to the slider mounting portion 65 of the shelf plate 6 described above, and a steel ball 73b that is a rolling element that is housed so as to be able to roll with the lower end exposed from the slider main body 73a. Have.

  The stay 74 is provided so as to connect the lower surface of the rail 73 and the side surface of the mounting portion 71. The stay 74 has a structure that can sufficiently withstand the uneven load applied to the rail when the shelf board 6 slides left and right. And this stay 74 is formed so that the right and left of the rail 72 may be lifted up in the front view and the back view to raise the left and right. Specifically, as shown in FIG. 8, the rail 72 is lifted from below at both ends of the stay 74, and the middle portion of the rail is fixed to the mounting portion 71 with a screw or the like and pulled downward. Since the rail 72 uses an extruded material, the rail 72 is straight without any inclination as it is. However, the rail 72 is curved by elastic deformation so that the rail 72 is not greatly distorted.

  Thus, in this embodiment, the baggage is stored at the storage position (X) and the protruding position (Y) by the positioning hole 72b that is an opening provided in the rail 72 and the steel ball 73b that is a rolling element that can be fitted into the positioning hole 72b. The positioning means 70 for positioning the mounting surface 6a is configured.

  As shown in FIG. 8, when the shelf board 6 is moved sideways along the rail 72, the steel ball 73b rolls in the rail 72, so that the shelf board 6, that is, the luggage placement surface 6a smoothly slides. can do. In the storage position (X) and the protruding position (Y), the lower end of the steel ball 73b is fitted into the positioning hole 72b, so that the steel ball 73b is preferably positioned in the storage position (X) and the protruding position (Y). In particular, at the protruding position (Y), the slider 73 is positioned in a state where the folded portion 72 c of the rail 72 is pressed. That is, when the shelf board 6 is slid left or right and the slider 73 is positioned at the end of the rail 72, the shelf board 6 is moved to the left or right by the dimension up to either the left or right edge of the slider 73 and the shelf board 6. At this time, the shelf board 6 protrudes to the left or right of the plane-view seating surface. Therefore, for example, the user simply presses the side edge of the shelf 6 to release the steel ball 73b from the state in which the steel ball 73b is fitted in the positioning hole 72b, and the steel ball 73b is coupled to the rail 72 by the elastic repulsive force of the folded portion 72c. It is designed to roll smoothly inside. As a result, the shelf board 6, that is, the luggage placement surface 6a, smoothly slides toward the storage position (X) and automatically moves to the storage position (X). Naturally, the shelf board 6 may be slid to the storage position (X) by pushing it inward by hand. As described above, the rail 72 is provided with a slight inclination so that the center portion is the lowest and the left and right end portions are higher. As a result, the shelf board 6 is operated by hand from the positioning hole holes 72b on the left and right ends. When the steel ball 73b is removed, the steel ball 73b slides smoothly, and the steel ball 73b is fitted into the positioning hole 72b at the storage position (X) and stopped at the storage position (X).

  With the configuration as described above, the chair according to the present embodiment can be used even when the seated person is working, or even when the chair seat 3 is housed in the lower limb space of the desk. The above luggage can be easily put in and out. As a result, in the free address office, a chair that can effectively contribute to a seatless person's wasteful operation is realized by smoothly handling the luggage during the seated person's work or at the time of sitting or leaving.

  And in this embodiment, in order to be able to place luggage stably in relation to the movement of the seat 3 by the movement of the seated person, a rail support part 71 for attaching the shelf 6 to the support base 2 is provided, A mode in which the load placing surface 6a is supported by the support base 2 is applied.

  Further, in this embodiment, in order to easily take out the luggage, the rail 72 is employed in the placement surface operating mechanism 7 so that the luggage placement surface 6a is placed between the accommodation position (X) and the protruding position (Y). It is assumed to reciprocate.

  In the present embodiment, positioning means 70 is further provided for positioning the luggage placement surface 6a at the storage position (X) and the protruding position (Y) so that the placement surface operation mechanism 7 is easier to handle. It is said.

  Then, the positioning of the load placement surface 6a and the smooth operation of the load placement surface 6a are achieved by a simple configuration in which the steel ball 73b, which is a rolling element rolling in the rail 72, is fitted into the opening positioning hole 72b. So it is realized. Of course, in order to realize a smooth operation of the load placement surface 6a, the structure is not limited to the structure using the steel balls 73b and the holes 72b, and may be configured only with a slider having a slippery structure. .

  In the present embodiment, as a result of paying particular attention to easy loading / unloading of the luggage during the sitting / working of the seated person, the loading surface operating mechanism 7 can be placed on either side of the plane seat 3 from the occupied range. The mounting surface 6a protrudes. By doing so, it is possible for the seated person to easily take out the luggage from either the left or the right during work.

<Modification 1>
Subsequently, each modified example of the present embodiment will be described. In the modified example, the same components as those of the above-described embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

  The placement surface operating mechanism of the present invention is not limited to a mode in which the load placement surface 6a is slid. That is, as shown in FIG. 9, the storage position in which the luggage placement surface 6 a is positioned inside the occupation range of the planar view seat 3 also by configuring the front end portion of the shelf plate 6 to be rotatable with respect to the support base 2. The mounting surface operating mechanism 7a can be configured to operate between (X) and the protruding position (Y) that protrudes to the side of the occupied range.

<Modification 2>
Moreover, in the said embodiment, it was set as the aspect which can position the operation | movement end of the shelf board 6 by setting it as the structure which provided the stopper 72c in the right-and-left both ends of the rail 72. FIG. However, when the width dimension of the rail 72 is set narrower than the width dimension of the shelf board 6, the shelf board 6 is moved left and right on the lower surface side of the shelf board 6 as shown in FIG. You may provide the slide stopper 67 which contact | abuts to the right and left both ends of a rail when it slides to an end. The slide stopper 67 may be attached with screws or the like from the upper surface of the shelf board 6, for example. In this modified example, by providing such a slider stopper 67, the slide stopper 67 and the rail 72, more specifically, the contact position between the slide stopper 67 and the side end of the rail 72, that is, the slide stopper 67. Thus, a positioning means 70 similar to that of the present embodiment is configured.

Second Embodiment
Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. Also in this embodiment, like the above modification, the same components as those in the above embodiment are denoted by the same reference numerals and detailed description thereof is omitted.

  As shown in FIGS. 11 to 12, the chair according to the embodiment is supported by the support base 2 and supports the rear end portion of the seat 3 so that the backrest 4 is tilted backward and the rear end portion of the seat 3 is lowered. The mounting surface movement mechanism 7 similar to that of the above embodiment is applied to a chair provided with a synchro tilt mechanism for interlocking with.

  As shown in FIGS. 11 to 12, the chair includes a leg 1, a support base 2 that is supported on the upper part of the leg 1 and can be turned horizontally, and a seat 3 disposed on the support base 2. An armrest 5 provided extending from the side of the seat 3 to the left and right, a backrest 4 having a back frame 40 provided on the support base 2 so as to be able to tilt backward, and a shelf board 6 described in detail later. It comprises. With this configuration, the chair performs a synchro tilt operation in which the seat 3 sinks backward when the back frame 40 is tilted backward.

  The leg 1 includes a caster 11, a leg base 12, and a leg support 13, as in the above embodiment, and a support base 2 is attached to the upper end of the leg support 13.

  As shown in the figure, the support base 2 is supported by the leg 1 so as to be horizontally pivotable. The support base 2 is protruded from the front and rear intermediate portion of the housing 21 to both sides. And a supporting shaft 22 as an extending shaft supporting portion for supporting the backrest 4 provided. In the present embodiment, the support base 2 itself is made more compact by causing the support shaft 22 to act as a torsion bar and to play a role as a tilt reaction force generation mechanism. The other support base 2 supports the front end 31 of the seat 3 via the vertical link 23 at the front end. Thereby, the height dimension of the front side portion of the luggage placement space S can be effectively secured. Of course, the configuration is not limited to the vertical link 23 shown in the figure, and the front end of the support base 2 may be raised so as to stand up and slide back and forth between its upper end and the front lower surface of the seat 3. Furthermore, although the support base 2 has a shape extending obliquely upward from the leg support 13 in the drawing, it may of course be extended horizontally forward. If it does so, the below-mentioned shelf board can be ensured substantially horizontally from the front to the back, and the larger luggage storage space S can be ensured.

  As shown in FIG. 11, the seat 3 is formed by mounting a cushion body constituting a seat surface on a seat receiver. In the present embodiment, the front end portion 31 of the seat 3 is operatively supported by the support base 2 via the vertical link 23, and the rear end portion 32 of the seat 3 is a seat support portion in the back frame 40. 44 is slidable back and forth. Further, the seat 3 includes a lumbar support portion 33 for supporting a lower portion of a tension ground 41 (described later) and supporting a waist of a seated person above the rear end portion 32. However, the present invention is not limited to this mode, and other configurations such as those provided on the back frame 40 may be applied.

  As shown in the figure, the backrest 4 is obtained by stretching a tension fabric 41 that constitutes the front surface of the backrest 4 on the front surface of the back frame 40. The back frame 40 is generally L-shaped in a side view, and a front-rear direction portion 42 that forms a left-right pair with a base end attached to the support shaft 22 of the support base 2 so as to be able to tilt backward, and this front-rear direction. A vertical portion 43 extending upward from the front end of the portion 42, that is, a rear end, and is formed to project forward from the vertical portion 43, and supports the rear end portion 32 of the seat 3. A seat support portion 44 is provided to support the rear end portion 32 so as to be slidable back and forth as the vehicle 40 is tilted backward. In this embodiment, the seat support portion 44 is provided on the vertical direction portion 43 side so that the vertical size on the rear side of the luggage placement space S described later can be set large. It may be provided by a configuration configured by taking out or other configurations. Further, in the present embodiment, the pair of front and rear direction portions 42 are attached so as to be fitted from the support shaft 22, thereby ensuring a sufficient separation distance between the pair of front and rear direction portions 42.

  As described above, the chair of this embodiment can perform a synchro-rocking operation in which the seat 3 and the backrest 4 are tilted in conjunction with each other. That is, in the synchro-rocking operation, the backrest 4 tilts back and forth as the entire back frame 40 rotates around the support shaft 22. At the same time, the rear end 32 of the seat 3 slides back and forth while swinging up and down in conjunction with the back frame 40, and the front end 31 of the seat 3 moves back and forth.

  The armrest 5 adopts a so-called T-shaped elbow shape having a symmetrical shape, and an elbow strut 50 having a base end attached to the seat 3 and an elbow supported by the elbow strut 50. And a pad 51. The armrest 5 according to the present embodiment is a T-shaped elbow that is fixed to the seat 3 and is integrally formed. For example, the length of the elbow support 51 can be changed by appropriately changing the length of the elbow support 50. You may employ | adopt the aspect of the movable elbow which can change a length dimension. Of course, an aspect in which the elbow rest 51 is configured to be turnable in the horizontal direction may be applied. Furthermore, the armrest 5 may be configured to be taken forward from the vertical direction portion 43 of the back frame 40 in addition to the illustrated embodiment. In the present embodiment, by attaching the elbow support 50 to the seat 3, it is effective that the armrest 5 interferes with loading / unloading of the luggage by being located on the side of the luggage placement space S, as in the first embodiment. To avoid.

  Thus, the chair according to the present embodiment has the above-described configuration, and the luggage placement space S is surrounded by the back frame 40, the support base 2 and the seat 3 in a side view and opened to the left and right sides. In the luggage placement space S, a shelf board 6 described below is arranged. Specifically, the shelf board 6 is disposed from the support base 2 via the placement surface operation mechanism 7.

  In this embodiment, the shelf board 6 can constitute all of the luggage placement surface 6a by covering substantially the entire upper surface of the support base 2, and includes a front part 61 positioned above the support base 2, A rear part 62 that protrudes rearward from the rear end of the support base 2, a left and right rising part 63 that rises upward on both sides, and a rear end that rises with a larger dimension than the left and right rising part 63 It mainly has an edge rising portion 64. In the present embodiment, the shelf plate 6 is disposed above the front-rear direction portion 42 of the back frame 40, so that a wider luggage placement space S can be secured in plan view.

  Specifically, the shelf 6 secures the left and right edges wider than the outside of the front-rear direction portion 42. Further, the left and right edge portions are positioned on the inner side in front view or plan view than the left and right edge portions of the seat 3. As shown in the figure, the left and right rising portions 63 are positioned above the front-rear direction portion 42 of the back frame 40 and are inclined to the outside in both the left and right directions. The back frame 40 is not caught when the luggage is taken in and out, and a suitable comfort is realized. The baggage placement space S is a limited space sandwiched between the seat 3 and the shelf board 6, and when placing a document or the like on the shelf board 6, the shelf board 6 is slid all the way to the seat 3 By positioning the rising portion 63 outward from the left and right edges of the document, when the edge of the document is placed on the shelf 6, the rising portion 63 causes the entire document to slide toward the center of the shelf 6. To fit in.

  Furthermore, as shown in FIG. 11, the chair according to the present embodiment positions the rear end of the shelf board 6 in front of the rear end of the front-rear direction portion 42 when the backrest 4 is in the upright state. With such a configuration, the up-down direction portion 43 of the back frame 40 and the shelf board 6 do not interfere with each other when the backrest 4 is in an upright state. With such a configuration, even if the rear end portion 32 of the seat 3 sinks, the luggage placement space S is formed so that the rear vertical dimension S1 is larger than the front vertical dimension S2. This effectively avoids the problem that the seat 3 interferes with the load placed on 6a.

  And the mounting surface operation mechanism 7 is attached to the rail support part 71 attached to the support base 2, the rail 72 fixed to the rail support part 71 at three places in the front-rear direction, and the shelf board 6 as in the above embodiment. And a slider 73 that can move in the rail 72. Since the specific configurations of the rail support portion 71, the rail 72, and the slider 73 are the same as those in the above embodiment, a specific description thereof will be omitted.

  As shown in FIG. 12, this placement surface operation mechanism allows the shelf board 6 to slide favorably to the side, so that the storage position (X) and the protruding position (Y) can be suitably taken. Yes.

  As described above, if the present invention is applied to a chair having a backsynchronous tilt mechanism that is preferably used in an office, the luggage placement surface 6a can be preferably operated.

  In particular, in the present embodiment, the luggage placement space S is formed so that the rear vertical dimension S1 is larger than the front vertical dimension S2, so that the luggage 3 is lowered by the lowering of the seat 3 with the backrest 4 tilting backward. Is less likely to interfere with the seat 3, so that the operation of the load placing surface 6a on which the items are placed can be stably performed.

  In particular, in the present embodiment, as an example of a suitable mode for providing both the synchro tilt mechanism and the placement surface operation mechanism 7, a luggage placement space that is surrounded by the support base 2 and the seat 3 and opened to the left and right sides. By adopting a mode in which the load placement surface 6a is positioned in S and the load placement surface operating mechanism 7 projects the load placement surface 6a laterally from the occupation range of the plane view seat 3, the load placement space The sufficient securing of S and the stable operation of the placement surface operating mechanism 7, that is, the ease of loading and unloading, are both effectively achieved.

  In the present embodiment, the shelf plate 6 is disposed above the front-rear direction portion 42 with the above-described configuration, thereby ensuring a larger load placement surface 6a and stable operation regardless of the operation of the backrest 4. The operation of the package placement surface 6a is realized.

  In this embodiment, the rear end rising portion 64 and the left and right rising portions 63 are provided on the shelf board 6 in order to effectively suppress the unexpected dropout of the luggage by the operation of the chair itself or the operation of the luggage placement surface 6a itself. It is assumed that it was provided.

  Although the embodiment of the present invention has been described above, the specific configuration of each unit is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

<Modification>
For example, as shown in FIG. 13, the arrangement of the slider 73 and the rail 72 is reversed from the above embodiment, that is, the rail 72 is attached to the lower surface of the shelf 6 or the rail 72 and the shelf 6 are integrated. It may be molded and a mounting portion 71 provided with a slider 73 may be mounted on the upper surface of the support base 2.

  Moreover, although the aspect which made the luggage | load mounting surface part of the shelf board was disclosed in the said embodiment, of course, the aspect whose bottom plate of a drawer is a luggage | load mounting surface may be sufficient. In addition, specific aspects such as an aspect in which the luggage placement surface itself expands and contracts and an aspect in which the luggage placement surface can be moved from the storage position to the protruding position by a link mechanism or the like are not limited to those in the above embodiment. The present invention can be applied in various forms including existing ones. Further, the positioning of the slider is not limited to the hole, but may be a method using attraction by a concave portion or a magnet, or an uneven elastic fitting between the rail and the slider.

  In addition, the specific configuration of each part is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Leg 2 ... Support base 3 ... Seat 4 ... Backrest 40 ... Back frame 42 ... Front-rear direction part 43 ... Vertical direction part 6 ... Shelf board 6a ... Luggage mounting surface 63 ... Rise part (right-and-left rise part)
64 ... Rising part (rear end rising part)
7 ... Placement surface operation mechanism 70 ... Positioning means 72 ... Rail 72b ... Opening (positioning hole)
73 ... Slider 73b ... Rolling element (steel ball)
S ... Luggage storage space X ... Storage position Y ... Projection position

Claims (12)

In a chair comprising a leg, a support base rotatably supported by the leg, and a seat disposed on the support base, a load placement surface between the support base and the seat Is formed, and a luggage storage space is formed between the luggage placement surface and the back surface of the seat so that the luggage can be taken in and out freely,
A placement surface operating mechanism that operates between a storage position in which the load placement surface is positioned on the inner side of the occupation range of the plane seat and a protruding position that protrudes to the side or rear of the occupation range; A chair characterized by being. The chair according to claim 1, wherein the luggage placement surface is supported by the support base.   The chair according to claim 1 or 2, wherein the placement surface operating mechanism is configured to slide the luggage placement surface between the storage position and the protruding position. The chair according to claim 1, 2, 3, or 4, wherein the placement surface operating mechanism has positioning means for positioning the luggage placement surface at the storage position or the protruding position. The placement surface operation mechanism includes a rail provided on one of the support base and the shelf, and a slider provided on the other.
The chair according to claim 4, wherein the positioning means includes an opening provided in the rail, and a rolling element provided in the slider and capable of fitting into the opening at the storage position or the protruding position.   The chair according to claim 1, 2, 3, 4, or 5, wherein the placement surface operating mechanism projects the luggage placement surface laterally from an occupation range of the planar seat. And further comprising a backrest that is supported by the support base and supports the rear end portion of the seat, and further includes a synchro tilt mechanism for interlocking the back tilting operation of the backrest and the lowering operation of the rear end portion of the seat. The chair according to claim 1, 2, 3, 4, 5 or 6.   The chair according to claim 7, wherein the luggage placement space has a rear vertical dimension larger than a front vertical dimension. The backrest has a back frame supported to be tiltable with respect to the support base;
The luggage placement space is a space opened to the left and right sides surrounded by the back frame, the support base and the seat in a side view,
The chair according to claim 7 or 8, wherein the placement surface operation mechanism projects a shelf board having the luggage placement surface laterally from an occupation range of the plane view seat. The back frame has a front-rear direction portion extending rearward from the support base, and a vertical direction portion extending upward from a rear end of the front-rear direction portion,
The chair according to claim 9, wherein the shelf board is disposed above the front-rear direction portion. Position the rear end of the shelf board in front of the rear end of the front-rear direction part,
The chair according to claim 10, wherein the shelf board has a rising portion that rises upward at the rear end.   The chair according to claim 7, 8, 9, 10, or 11, wherein the shelf board has a rising part that rises from the left and right edge parts of the shelf board.

Images