CN1298273C

CN1298273C - Supporting structure for table component

Info

Publication number: CN1298273C
Application number: CNB031094767A
Authority: CN
Inventors: 木村晃之
Original assignee: Kokuyo Co Ltd
Current assignee: Kokuyo Co Ltd
Priority date: 2002-06-14
Filing date: 2003-04-09
Publication date: 2007-02-07
Anticipated expiration: 2023-04-09
Also published as: HK1061629A1; JP2004016397A; JP4106973B2; CN1466924A

Abstract

To enable positioning of a table member according to the variation of respective members composing a chair to improve the versatility of the table member. The table member 24 is rotatably supported on a side member 20 of the chair 12. The table member 24 includes a table support 71 rotatably supported on the side member 20 and a table plate body 72 rotatably connected to the table support 71 and movably provided between a use position and a non-use position. The table support 71 has a changeable fixing position relative to the side member 20.

Description

The supporting construction of desk member

Technical field

The present invention relates to the supporting construction of desk member, in more detail, relate to and to be arranged on the chair side rotatably and can be when taking a seat in the supporting construction of the desk member of the enterprising running hand write operation of table body.

Background technology

Past, in arenas or meeting-place etc., adopt along up and down and left and right directions dispose the mobile seat of touring of a plurality of chairs arranged side by side.The mobile seat of touring like this, in use, on the estrade of stepped expansion, be provided with and can hold up to a plurality of chairs of use location and the formation folded state that when not using, can be fallen in the back of chair, by retract with each estrade overlapping after, be collected in the spatial accommodation of regulation.

As the chair that in the aforementioned mobile seat of touring, uses, be supported on the aforementioned estrade, and, constituting of adopting has: can and fall in set-up positions back that is provided with rotatably between the position and the side member that is positioned at this side, back, and be supported on the side member and can be along the seat portion of rotating between the position at back and the approximate horizontal position that can take a seat in the anterior position at back.The formation of side member comprises: the handrail that extends of direction and handrail rotatably is supported on the locational supporter of specified altitude forwards, backwards.Move in collection under the situation of the seat of touring, each member of formation of chair is horizontally placed on the estrade, that is, back, supporter and seat portion be to the direction rotation of falling, and, with handrail be folded into keep direction extension forwards, backwards towards.

And, be easy on books, write in order to make the people who is sitting on the chair, there is a kind of chair of being furnished with the desk member in the waist the place ahead that can be positioned at the person of taking a seat.This desk member is installed on the lateral surface of handrail, it constitutes is furnished with: can be rotatably set in the approximate vertical face and the pivot of its pivot and handrail and supporter is arranged on tabular desk supporter on the roughly same axis, and can be connected with this desk supporter with the relative rotation and be positioned over the tabular table body that can be used as the operating surface use on the approximate horizontal position of handrail upper surface.Table body when not using, is arranged on the position of slipping into seat subordinate side movably along the front end of supporter.And when chair was folded up, table body was configured in the gap between supporter and the estrade under the state that keeps with the relative position of the supporter of the posture that becomes to fall.

But, recently, when being covered up, can save the space for seeking to move the seat of touring, each chair trend of reducing of width up and down when folding that makes is arranged.Thereby, descend width on the whole corresponding to chair when folding, also there are a plurality of variations in the handrail when folding or the width up and down of supporter.

But, when on the handrail in aforementioned various variations general desk member being installed, for many different handrails, cause table body can not be positioned over handrail above be arranged on the use location, can not remain on the position of approximate horizontal, perhaps table body can not be arranged on along on the position of supporter, table body can not be between supporter and estrade etc. inappropriate problem.Like this, because the set positions of the pivot of desk supporter and handrail and supporter is on the same line roughly, so the member that causes the desk member not change corresponding to the relative position with this center.

Therefore, for fear of above-mentioned improper, need change the shape or the structure of desk member according to aforementioned various variations, but in this case, must make dissimilar desk members separately, causing can not be by the problem that the member generalization is reduced cost.

Summary of the invention

The present invention its objective is the supporting construction that a kind of desk member is provided in view of above problem proposes, and can determine the installation site of desk member according to the variation of the various members that constitute chair, can improve the versatility of desk member.

In order to realize aforementioned purpose, the present invention, in the supporting construction of the desk member on a kind of side member that rotatably is supported on chair,

Aforementioned desk member comprises: rotatably is supported on desk supporter on the aforementioned side member, is connected on this desk supporter and can be at use location and the table body that does not move between the use location,

Between aforementioned desk supporter and side member, be provided with the adjustment member, can change the installation site of aforementioned desk supporter with respect to aforementioned side member by this adjustment member.Particularly, by comprise the seat portion that is arranged on the place ahead, back and be arranged on this side and be furnished with on top handrail side member chair and aforementioned chair is constituted from the use location to the estrade that use location is not supported it foldedly,

Comprise the desk member that is installed on the aforementioned side member,

Aforementioned desk member comprises: rotatably is supported on the desk supporter on the aforementioned side member and is connected on this desk supporter and can be at use location and the table body that does not move between the use location,

Aforementioned desk supporter adopts can change the structure of setting for the installation site of aforementioned side member.Adopt this structure,, also can correspondingly set the installation site of desk member even have under the situation of multiple variation in the shape of side member, can be easily with the use location of table body and not the use location remain on the best position.And, under situation about the desk member being arranged on the folding chair, the desk member can be installed in and not hinder on this folding position.Therefore, same desk member can be installed on the various forms of chairs, the kind of desk member can be controlled in the bottom line.

Description of drawings

Fig. 1 is the front view that adopts the supporting construction of desk member in the chair that moves the seat of touring according to first embodiment.

Fig. 2 is the plane of Fig. 1.

Fig. 3 is the schematic perspective view of aforementioned chair.

Fig. 4 is the left side view of Fig. 3.

Fig. 5 is the enlarged drawing of the major part of Fig. 4.

Fig. 6 is the amplification view along the A-A line of Fig. 5.

Fig. 7 is the exploded view of Fig. 6.

Fig. 8 is a side view of adjusting member.

Fig. 9 is the amplification right side view of the part of desk member.

Figure 10 is the side view identical with Fig. 9 that expression makes the state of table body rotation.

Figure 11 is the side view the same with Fig. 3 when table body is on use location not.

Figure 12 is the side view the same with Fig. 3 when chair is in folding posture.

Figure 13 is that expression is according to the second embodiment chair left side view.

Figure 14 is the enlarged drawing of the major part of Figure 13.

Figure 15 is the amplification view along the B-B line of Figure 14.

Figure 16 is the side view the same with Figure 13 when table body is in use location not.

Figure 17 is the side view the same with Figure 13 when chair is in folding posture.

Label declaration

12 chairs

20 side member

24 desk members

26 supporters

27 handrails

71 desk supporters

72 table bodies

73 adjust member

97 detent mechanisms

The specific embodiment

In the present invention, preferably adopt such structure: between aforementioned desk supporter and side member, be provided with the adjustment member, utilize this adjustment member, the installation site with respect to aforementioned side member is set variablely.Like this, can utilize simple structure to realize aforementioned purpose better.

And, aforementioned side member also can adopt such structure: comprise the supporter that is arranged on the locational handrail of specified altitude and can supports this handrail, aforementioned adjustment member can allow the desk supporter the face of table body above handrail the position and aforementioned between the position of the bearing of trend of supporter, rotate.Adopt this structure, can not be subjected to the restriction of the structure of handrail and supporter, can use table body swimmingly, and, when not using table body, it can be arranged on the position that does not hinder the user.

And adopt such structure: when aforementioned supporter was falling when rotating between position and the set-up positions, aforementioned adjustment member is kept the relative position of supporter and desk member.In this structure, for example,, still the face of table body can be remained on the position of the bearing of trend of supporter even under the situation of the folding rotation that is accompanied by chair and the supporter that fell, whereby, can make folding chair densification.

And then, preferably adopt such structure: at aforementioned desk member with adjust between the member, the detent mechanism that the rotation that can limit the desk supporter is moved is set.Adopt such structure, can utilize guiding mechanism to constitute detent mechanism, can reduce member number, reduce cost.

In addition, in this manual, except that situation about particularly pointing out, " on ", D score, " left side ", " right side " be that benchmark uses with Fig. 1.And " preceding " is meant that the place ahead that is sitting in the people on the chair is the below among Fig. 2, and " back " then refers to the top of this figure.

[embodiment]

Embodiments of the invention are described with reference to the accompanying drawings.

[first embodiment]

In Fig. 1 to Figure 12, be illustrated in first embodiment that adopts in the chair that constitutes the mobile seat of touring according to the supporting construction of desk member of the present invention.In these figure, under the state (with reference to Figure 12) of joint-stool, the width up and down of expression one-level is set at the mobile seat of touring of the type of about 200mm.Here, front view is summarized in the aforementioned part of moving the seat of touring of expression in Fig. 1.And, the plane of presentation graphs 1 in Fig. 2, the schematic perspective view of expression chair in Fig. 3.In these figure, move the seat 10 of touring and comprise: the estrade 11 that is arranged in the meeting-place etc. and extends along left and right directions, laterally be set up in parallel a plurality of chairs 12 on this estrade 11.Move the seat 10 of touring, be furnished with the roughly the same stair-stepping estrade 11 of formation structure under user mode, still, here, only expressed one-level estrade 11 among the figure, and omitted illustrating other estrade 11.

Aforementioned estrade 11, as shown in Figure 3 and Figure 4, comprise: be positioned at generally horizontal plane and can release and the following basic courses department 13 of setting along fore-and-aft direction with retracting via not shown slide mechanism, be arranged on than the fore-and-aft direction central portion of this time basic courses department 13 more by the last basic courses department 14 of the box-shaped above the zone at rear, be arranged on the interior and bearing components 15 that be provided with respectively corresponding to each chair 12 of basic courses department on this 14.Bearing components 15 comprises: that clamps the lower end side of the described side member in back from the left and right sides and be furnished with the hole 17A that runs through major axis 16 in front a pair ofly erects facially 17,17, and is arranged on the gusset member 18 that respectively erects the horizontal L font between facial 17,17.Major axis 16 forms and runs through respectively and extend the strip among facial 17 the hole 17A of erecting that supports each chair 12, plays the effect (with reference to Fig. 1) as the holding up of each chair 12 laterally arranged side by side, the common axis when falling.

Chair 12 comprises: via major axis 16 rotatably be supported on side member 20 on the aforementioned bearings member 15, be positioned at these side member 20 rear portions back 21, be positioned at the seat portion 22 in these 21 the place aheads, back and be arranged on a pair of

carriage

23,23 on the left and right sides at back 21.And, in the left side of side member 20, promptly, when the people is sitting in the portion 22 on this people's right side, rotatably the table support member 24.

Aforementioned side member 20 comprises: in Fig. 1 of seat portion 22 in the side of left side and can be at the handrail 27 on set-up positions shown in Figure 4 and the height and position that fell the supporter 26 that is provided with rotatably between the position and rotatably be supported on regulation by this supporter 26 shown in Figure 12.

Aforementioned supporter 26 comprises: be connected the supporter formation portion 28 between estrade 11 and the handrail 27 and be installed in cover member 29 on these supporter formation portion 28 left and right sides faces, be prismatic face shaping as a whole.Have no particular limits for supporter formation portion 28, but in the present embodiment, utilize the cast aluminium product composition.Supporter formation portion 28, extremely shown in Figure 6 as Fig. 4, comprise: the stepped portion 31 in the distolateral anterior folding corner region disposed thereon, be arranged on first retaining hole 32 on the rear side position adjacent with this stepped portion 31, be arranged on than the positive lower position of this first retaining hole 31 more by second retaining hole 33 on some the position, back, be arranged on than the central authorities of above-below direction and lean on the last position, and the 3rd retaining hole 35 that keeps the rotating shaft 34 of seat portion 22, be arranged on the incision-like portion 37 in the supporter formation portion 28 lower end side rear portion folding corner regions, be arranged on aforementioned incision-like portion 37 front side position adjacent on and keep the 4th retaining hole 38 of aforementioned major axis 16.Inner surface (right flank among Fig. 1) side in supporter formation portion 28 connects angular component 39 in the top position of basic courses department 14 on aforementioned, in the front face side of this angular component 39 magnet 40 is installed.

Aforementioned handrail 27 is made of erecting bed 42, the Armset member 43 that is installed on this erecting bed 42.Be not particularly limited for erecting bed 42, but in the present embodiment, by the cast aluminium product composition.This erecting bed 42, as shown in Figure 6 and Figure 7, by be divided into two-part interior plate 44 in the left and right sides and outer panel 45, and the upper plate 46 that is provided with in the mode of crossing between

plate

44,45 tops constitute, under assembled state, bottom and rear portion are open state.Interior plate 44 is positioned at the face of approximate vertical and extends along fore-and-aft direction, the upper plate supporting part 49 that have the plate main body 48 on inclined plane at front end, forms with the upper end of this plate main body 48 and be formed at the tubular supporter reach 50 of the substantial middle of above-below direction on than the more forward position of the fore-and-aft direction central portion of plate main body 48 with fusing.In aforementioned upper plate supporting part 49, on a plurality of positions of its fore-and-aft direction direction of paper quadrature (among the Fig. 6 with), form screwed hole 49A.And supporter reach 50 is inserted in aforementioned first retaining hole 32, whereby, and by supporter 26 supporting armrests 27 with the relative rotation on the axle center of supporter reach 50.In addition, aforementioned outer panel 45 forms the symmetric shape roughly the same with interior plate 44, thereby, in the structure division of outer panel 45, so that 44 target reference numbers of interior plate are represented, and omit explanation to it.

In the left and right sides of aforementioned upper plate 46, as shown in Figure 7, form and be arranged on the corresponding a plurality of screw thread patchholes 52 of screwed hole 49A in the aforementioned upper plate supporting part 49, simultaneously, in the rear end side central portion, be formed for the screw thread patchhole 53 of fixed armrest member 43.Upper plate 46 is fixed by bolt 54 with the state of mounting on upper

plate supporting part

49,49, whereby, is formed centrally one in interior plate 44 and outer panel 45 with the upper end of supporter 26 being.

In the present embodiment, aforementioned Armset member 43 is made of timber.This Armset member 43, as shown in Figure 5, by the top that places aforementioned erecting bed 42, be upper plate 46 upper face side go up facial 55 and tilt from this front portion of going up face 55 and constitute downwards with the front face 56 that the mode of the front that covers aforementioned erecting bed 42 is provided with.As shown in Figure 7, the following side of portion 55 in the above is provided with and is located at the screw thread patchhole 53 corresponding to hole 55A of the rear portion central authorities of aforementioned upper plate 46 as required, and the screw threaded of inserting from the below of upper plate 46 is to the 55A of this hole.

As depicted in figs. 1 and 2, aforementioned back 21 comprises: be contained between the mutually

adjacent side member

20,20, with about be the backboard 59 of width ground setting and the back mount body 60 that is arranged on the front face side of this backboard 59 and has the member formation of resiliency.

Aforementioned seat portion 22 is configured between the adjacent mutually

supporter

26,26, and rotatably is supported on these

supporters

26,26 from the left and right sides via aforementioned rotating shaft 34,34.Seat portion 22 utilizes to be arranged on rotating shaft 34 not shown governor motions such as damper on every side, can be in the approximate horizontal position (with reference to Fig. 4) that can take one's seat with along being provided with rotatably between the position (with reference to Figure 11) at back.And, as shown in Figure 1, seat portion 22 and support between the right side supporter 26 of this one 22 and be provided with the gap, when making aforementioned desk member 24 rotations, this desk member 24 not can with the seat portion mutual interference mutually of adjacent chair 12.

Aforementioned bracket 23 is to be processed to form by the sheet metal that a metallic plate is stipulated.As shown in Figure 4, carriage 23 couples together the rear end side of estrade 11 and handrail 27, is provided with in the mode that supports this rear end side.More particularly, by the head 62 on the pin 61 that rotatably is connected the hole 48A that is positioned at the rear end side top that is formed at aforementioned panels main body 48, be connected on the lower end side of this head 62 via the neck 64 that is the necking down shape and along with the main part 65 that broadens downwards, be connected in the foot 66 on these main part 65 lower end side, be connected on the rear end side of this foot 66 and the foot 68 that is connected on the aforementioned gusset member 18 via axle 67 constitutes.And carriage 23 is furnished with curved tabs 70, this curved tabs 70 be connected on the rear end side of main body 65 and to the left and right direction extend, and be inserted between aforementioned backboard 59 and the back mount body 60.Therefore, carriage 23 keeps the posture that erects at back 21, simultaneously, makes back 21 rotations linkedly with side member 20 or seat portion 22.

Aforementioned desk member 24 comprises: can rotate the desk supporter 71 of twelve Earthly Branches supports and be rotatably connected to tabular table body 72 on this desk supporter 71 in the face of approximate vertical with respect to handrail 27.At this, desk supporter 71 and table body 72 are mainly made by the cast aluminium product in the present embodiment.

To shown in Figure 7, between desk supporter 71 and handrail 27, be provided with the tabular adjustment member 73 of the face that is positioned at approximate vertical as Fig. 5, desk member 24 rotatably be supported on the handrail 27 via this adjustment member 73.As shown in Figure 8, the mode of metallic plate partial cut-out such as discoid aluminium forms this adjustment member 73 will form roughly.In more detail, adjusting member 73 comprises: with the size in the face that is contained in desk supporter 71, thickness setting, the lower central portion of left and right directions forms the local major diameter half-round 75 of the roughly semicircular in shape of protuberance downwards among Fig. 8, the minor diameter half-round 76 that is connected the upper side of this major diameter half-round 75 and is arranged to the roughly semicircle of the diameter dimension littler than this major diameter half-round 75 and forms in the mode that the central portion of left and right directions swells upward.

Each the semicircular center that forms aforementioned major diameter half-round 75 and minor diameter half-round 76 is arranged on roughly on the same position, and the female threaded hole 78 of the front end of flush bolt 77 (with reference to Fig. 7 etc.) is held in this center position setting.And the both sides, front and back in the lower position of female threaded hole 78 are provided with the pair of bolts patchhole 81 that is run through by bolt 80.To run through the bolt 80,80 that the mode of inserting each bolt-inserting hole 81,81 is installed, when after front end will be installed on the outer circumferential side as the nut 82 of distance piece, be screwed on two positions of the plate main body 48 in the outer panel 45, whereby, with the outer surface of handrail 27 adjustment member 73 is installed with a gap at interval, and, can not be supported with the relative rotation with respect to handrail 27.At this, be positioned at the position that screws togather that mode on the roughly same axis is set bolt 80 with the axle center of the center of female threaded hole 78 and supporter reach 50.And the position is provided with the cydariform hole 83 with pair of right and left vertical plane 83A, 83A by on some the position, the left side among Fig. 8 under than female threaded hole 78.In addition, the relative position relation in female threaded hole 78 and cydariform hole 83 is determined by the shape of the side member of described second embodiment in back.

Aforementioned desk supporter 71, as shown in Figure 5 and Figure 6, comprise: be provided with and form discoid 85 that to hold vertical dish of adjusting member 73 in the mode of seeing the peripheral shape that is roughly circular arc from the side, link to each other with this front of discoid 85 and forwards tapered arm 86 and be installed in the pushing member 87 of discoid 85 middle section.Comprise for discoid 85: the locational vertical surface part 89 that is arranged on the predetermined distance of being separated by with respect to the plate main body 48 of handrail 27, be connected on the outer circumferential side of this vertical surface part 89 and towards the outer wall face 90 of handrail 27 sides, be on the approximate centre position that tubular is formed at vertical surface part 89, have than little left and right sides width of outer wall facial 90 and the inwall face of on left and right directions, getting through 91.And pushing member 87 is furnished with the insertion section 93 that is inserted in the inwall facial 91 and links to each other with this insertion section 93 and be positioned at flange part 94 on the outside of vertical surface part 89, and the hole 95 that can insert aforementioned flush bolt 77 is set on their approximate centre position.After being inserted into aforementioned insertion section 93 in the inwall face 91, be screwed in the female threaded hole 78 of adjusting member 73 by flush bolt 77 being passed hole 95, the right part of inwall face 91 is pressed against on the adjustment member 73, by adjusting member 73 table support supporters 71.Therefore, desk supporter 71 can be center rotation with flush bolt 77, and, this pivot position be positioned on the roughly same axis with the relative pivot position of supporter 26 and handrail 27.At this, at discoid 85 with adjust between the member 73, as shown in Figure 5, the detent mechanism 97 that the rotation of restriction desk supporter 71 is moved is set.

Aforementioned detent mechanism 97 is made of rotation restriction portion 98 and the auxiliary restriction portion 99 of rotating.Rotation restriction portion 98 is can keep the mode of the anglec of rotation of desk supporter 71 to be provided with within the specific limits.This rotation restriction portion 98 comprises: the horizontal end 101 that is connected in desk supporter 71 is in Fig. 5 of use location between each leading section of major diameter half-round 75 and minor diameter half-round 76 and extends along general horizontal direction, connect each rearward end of major diameter half-round 75 and minor diameter half-round 76 and the inclined end portion 102 of extending, conjointly form and see from the side the roughly trapezoidal protrusion of formation 103 with the inner peripheral surface part of aforementioned outer wall face 90 in discoid 85 along the direction that forwards descends gradually.First hypotenuse end 103A that protrusion 103 is furnished with is side-prominent in discoid 85 radial direction, contact with inclined end portion 102 on position shown in Figure 5 and the second hypotenuse end 103B that extends in an approximate vertical direction.Therefore, rotation restriction portion 98, when inclined end portion 102 contacts with the first hypotenuse end 103A, the rotation that is rotated counterclockwise direction among Fig. 5 of restriction desk supporter 71, on the other hand, when horizontal end 101 contacts with the second hypotenuse end 103B, the rotation of restriction desk supporter 71 dextrorotation veer in the figure.

Aforementioned auxiliary rotation restriction portion 99, as shown in Figure 5 and Figure 6, comprise: be arranged on along discoid 85 radial direction and run through disc spring 106 in the hole 105 of circumferential direction central portion of protrusion 103, be arranged on disc spring 106 lower end side, and by these disc spring 106 pushings spherical component 107 downwards, be installed in the lid 108 of opening part to be used to prevent that disc spring 106 from coming off in these 105 outsides, hole, with the neighboring that is formed at minor diameter half-round 76, and first to the 3rd recess 110～112 (with reference to Fig. 8) that can partly hold spherical component 107, when spherical component 107 was contained in each recess 110～112, this auxiliary restriction portion 99 of rotating can apply rotational resistance to desk supporter 71.In first to the 3rd recess 110～112, the formation position of first recess 110 of inclined end portion 102 sides when inclined end portion 102 contacts with the first hypotenuse end 103A, is set on the position that holds spherical component 107.And, the formation position of second recess 111 of horizontal end 101 sides, when the second hypotenuse end 103B contacts with horizontal end 101, be set on the position that can hold spherical component 107, be arranged on the 3rd recess 112 between first and second recesses 110,111, be provided with in the mode that on horizontal end 101 and position nearby that the second end 103B contacts, can hold spherical component 107.Aforementioned first recess 110, than the degree of depth of second and third recess 111,112 be provided with shallow, therefore, auxiliary rotation restriction portion 99 in the time of when spherical component 107 is contained in first recess 110 in, utilizes the deadweight of desk member 24 to apply to allow the rotational resistance of the degree that desk supporter 71 rotates, on the other hand, in the time of in spherical component is contained in the second and the 3rd recess 111,112, only otherwise have a mind to apply rotary manipulation power, just produce the rotational resistance that makes the degree that desk supporter 71 can not rotate.

Aforementioned arm 86, as shown in Figure 9, end face upper edge fore-and-aft direction is provided with two bearing portions 114,114 thereon, and the inner face side between this bearing portion 114,114 forms sinking portion 115.In sinking portion 115, be provided with the disc spring 116 that extends along fore-and-aft direction, utilize in the sinking portion 115 outstanding pins 117 keep these disc springs 116 one distolateral, be rear end side.

Aforementioned table body 72, via desk supporter 71 can and above the handrail 27 almost parallel use location (with reference to Fig. 3 and Fig. 4) and and the not use location (with reference to Figure 11 and Figure 12) of the bearing of trend almost parallel of supporter 26 between move.Extremely shown in Figure 5 as Fig. 3, table body 72 comprises: each the bearing portion 114 that is positioned at arm 86, between 114, and be penetrated with the axle maintaining part 120 of the axle 119 that between them, extends, link to each other with this maintaining part 120 and extend along fore-and-aft direction, and Background Region places the back plane portion 121 of the upper face side of handrail 27, link to each other with the front portion of aforementioned back plane portion 121 and be positioned at a portion 22 tops, and along the flat shape that left and right directions is certain-length is the frontal plane portion 122 that essentially rectangular ground is provided with, can be from roughly rotating to this outer surface roughly to become on the approximate vertical position on a plane in the approximate horizontal position of quadrature with the outer surface of desk supporter 71 shown in Figure 3.The left and right sides width of back plane portion 121 is set than the left and right sides width little (with reference to Fig. 2) of handrail 27, and when 71 rotations of desk supporter, back plane portion 121 can not disturb a portion 22.And, the front and back width of frontal plane portion 122, the mode that can slip into the downside that is in the seat portion 22 that generally horizontal position puts when being on the not use location shown in Figure 11 at table body 72 is provided with.

Side below aforementioned frontal plane portion 122, being provided with plan view in the substantial middle portion in this face is oblong magnet 124.When table body 72 is in not the use location, this magnet 124 be installed in magnet 40 magnetic on the aforementioned angular component 39 and inhale and connect, prevent that table body 72 from rocking.And, between axle maintaining part 120 and back plane portion 121 below side, as shown in Figure 9, be provided with the other end that keeps aforementioned disc spring 116, be the pin 125 of front.Therefore, disc spring 116 as shown in figure 10, when the direction towards approximate vertical of table body 72 is rotated, applies tensile force, the power that effect sets back table body 72 between desk supporter 71 and table body 72.

In addition, major axis 16 and gusset member 18 are connected on the not shown drive unit, utilize each member of formation that this drive unit can rotating chair 12.

Below, the using method of desk member 24 and the method for folding of chair 12 are described.

State before use under the situation of desk member 24, as shown in Figure 3 and Figure 4, table body 72 is positioned at the use location, be that the back plane portion 121 of table body 72 places on the top approximate horizontal position of handrail 27.Therefore, frontal plane portion 122 is positioned at waist the place ahead of the people who occupies in the portion 22, utilizes this frontal plane portion 122 that books etc. are placed on the upper face side, operation such as can write.

And, under the state of taking one's seat, do not use under the situation of desk member 24, table body 72 can be arranged on the not use location shown in Figure 11.The tensile force of the aforementioned disc spring 116 of this operation resistance lifts inner end (right-hand member) side of frontal plane portion 122, and with desk supporter 71 roughly the mode on a face rotate, afterwards, while lifting the direction rotation desk supporter 71 that table body 72 descends to arm 86 front ends.At this moment, in case desk member 24 tongs, the spherical component 107 that aided location is limited portion 99 is contained in the 3rd recess 112 for the power of arousing attention, and sends " click clatter " sound and is locked in the state of arm 86 towards oblique below quickly.Afterwards, by applying enforceable rotary manipulation power, making further rotation downwards of desk supporter 71, being accompanied by " click clatter " sound is contained in spherical component 107 in second recess 111, simultaneously, the second hypotenuse end 103B of rotation restriction portion 98 contacts with horizontal end 101, and arm 86 is in the rotation of restriction desk supporter 71 under the state of approximate vertical direction.At last, be positioned at the locational mode that slips into a portion 22 downsides by the frontal plane portion 122 with table body 72 and be rotated, as shown in figure 11, each magnet 40,124 magnetic is inhaled and is connect, and table body 72 remains on the position of the front of supporter 20.

In this state, under situation about table body 72 being arranged on the use location, carry out according to the order opposite with aforementioned operation.At this, when desk supporter 71 rotates on the position shown in Figure 4, be accompanied by " click clatter " sound, spherical component 107 is contained in first recess 110, simultaneously, the first hypotenuse end 103A of rotation restriction portion 98 contacts with inclined end portion 102, the back plane portion 121 of table body 72 can place handrail 27 above.

Forming from posture shown in Figure 4 under the situation of the posture that chair 12 is folded up, at first, shown in the solid line among Figure 11, towards 21 direction rotating seat portion 22 along the back, and, desk member 24 is arranged on the aforementioned not use location, afterwards, makes supporter 26 towards the direction rotation of falling towards the place ahead.Along with the rotation of this supporter 26 is moved, as shown in figure 12, also fallen in following basic courses department 13 in back 21 via handrail 27 and carriage 23.When back 21 and supporter 26 fell in basic courses department 13 down in the mode that is in the approximate horizontal position, seat portion 22 also formed the approximate horizontal position, and between back 21 and following basic courses department 13.And, because handrail 27 is connected on the carriage 23, thus with the position of the axle of supporter reach 50 be the center with respect to supporter 26 rotations, keep the orientation of extending along fore-and-aft direction.And then, can not be supported on the relative rotation on the handrail 27 owing to adjust member 73, so keep adjusting the orientation of member 73.At this moment, because the pivot position of desk supporter 71 is roughly consistent with the relative pivot position of supporter 26 and handrail 27, so the rotation of handrail 27 is moved the relative position of desk member 24 and supporter 26 is changed, therefore, desk member 24 is put into supporter 26, and between this supporter 26 and following basic courses department 13.And, owing to table body 72 is limited to move via each magnet 40,124, so when supporter 26 rotations were mobile, table body 72 can not rock.In addition, though the chair 12 in the present embodiment is to be undertaken the use location of desk member 24 and moving between the use location not by the human hand, also can automatically carry out mobile between use location and folding position via not shown drive unit to back 21, seat portion 22, supporter 26 and handrail 27.

Thereby, adopt the first such embodiment, utilize to adjust member 73 with the relative pivot set positions of the pivot position of desk supporter 71 and supporter 26 and handrail 27 on same axis roughly, thereby, even desk member 24 is not connected with supporter 26, the relative position that when supporter 26 rotation, also can keep desk member 24 and supporter 26, and, can keep the use location of table body 72 and use location not well.

[second embodiment]

Below, the second embodiment of the present invention is described.In addition, in the following description, adopt identical label as required, and omit or simplify explanation it for the structure division identical or suitable with aforementioned first embodiment.

In Figure 13 to Figure 17, second embodiment of the chair 12 of desk member 24 of the present invention is adopted in expression.This second embodiment is the type that the width up and down that moves the one-level of the seat 10 of touring is set at about 250mm, and desk member 24 that will be identical with first embodiment is installed on the side member 20.

Handrail 127 among second embodiment, as Figure 14 and shown in Figure 15, width is set greatlyyer than the handrail 27 shown in first embodiment up and down, and supporter reach 129 is formed at the downside of table body 48.Thereby the top spacing distance with supporter reach 50 in the handrail 27 of previous embodiment is relative elongated.And the supporter reach 129,129 of each

plate

44,45 is inserted in aforementioned second retaining hole 33 of aforementioned supporter 26, forms the relative pivot position of supporter 26 and handrail 127 at this place.And the axle center of the supporter reach 129 of outer panel 45 sides forms through hole 130.

Aforementioned adjustment member 73 is installed on the supporter 26 via the axle shape connecting elements 132 that inserts aforementioned through hole 130.Connecting elements 132 has the shape of cross section that conforms to the inner peripheral surface shape in the cydariform hole 83 of adjusting member 73.And the left end side among Figure 15 of connecting elements 132 is fixed in the cydariform hole 83 by fusion etc.On the other hand, connecting elements 132 right-hand member side in the figure under the state in being inserted into through hole 130, utilizes the stay bolt 133 that screws togather from the rear end side of supporter 26 to be fixed in second retaining hole 33.Therefore, between the end face that crashes of each supporter reach 129,129, form otch 129A,, make connecting elements 132 and supporter 26 form one with supporter reach 129 and stay bolt 133 hands-off modes when handrail 127 rotates.Thereby, can not support adjustment member 73 with respect to supporter 26 with relatively moving.

At this, the cydariform hole 83 and the relative position of female threaded hole 78 set for the desk member 24 identical with first embodiment can be installed.Promptly, be arranged at table body 72 under the situation on the use location shown in the solid line of Figure 13, the back plane portion 121 of table body 72 crosses on handrail 27, under table body 72 is positioned at situation on the not use location shown in Figure 16, to set with the mode of the bearing of trend almost parallel of supporter 26.

In said structure,, can fold with first embodiment forming under the situation of the shape that chair 12 is folded up from posture shown in Figure 13 the samely.At this moment, do not supported revolvably with respect to supporter 26 owing to adjust member 73, so the relative position of desk member 24 and supporter 26 can not change, desk member 24 was fallen with supporter 26.

Thereby, adopt second such embodiment, because via adjusting member 73 table support members 24, even so exist under the situation about changing in the shape of handrail 27, also can make table body 72 and the roughly the same use location of first embodiment and not moving between the use location, and, can chair 12 be folded up without any obstacle ground.

In addition, in aforementioned each embodiment, although clear situation about desk member 24 being installed on the chair 12 that moves seat 10 usefulness of touring, but the present invention is not limited to this, for example, also can be installed on the known chair of being furnished with side member 20 or the chair that can fold separately.

And the formation position in each

hole

78,81,83 of aforementioned adjustment member 73 or formation number are not limited to the example shown in the figure, can carry out suitable change according to the shape of side member 20 or the installation site of desk member 24 etc.

As mentioned above, adopt the present invention, the desk supporter of formation desk member can change the relative installation with side member, more particularly, owing to utilize adjustment member between desk supporter and the side member can change the installation site of desk supporter, so can set the pivot position of desk member according to the shape of side member and motion track etc., can easily utilize table body to carry out the position adjustment.Therefore, even have under the multiple multi-form situation, also can same desk member be installed easily according to these forms in the shape of side member.

And, since adjust member allow face at table body above handrail the position and along rotation desk supporter between the position of the bearing of trend of supporter, so when using the desk supporter, can utilize this table body desired location easily, and, when not using, can be set on the position that does not hinder the user.

And then, when supporter rotates, can keep the relative position of supporter and desk member owing to adjust member, so, also can not increase the volume of desk member even under the situation on the chair that the desk member is installed in Foldable type.

And, at the desk member with adjust under the situation that is provided with the detent mechanism that the rotation that can limit the desk supporter moves between the member, adjust member by utilizing, can reduce number of components to reduce cost.

Claims

1, a kind of supporting construction of desk member, it rotatably is supported on the side member of chair, it is characterized in that,

Between aforementioned desk supporter and side member, be provided with the adjustment member, can change the installation site of aforementioned desk supporter with respect to aforementioned side member by this adjustment member.

2, a kind of supporting construction of desk member, it is characterized in that, by comprising the seat portion that is arranged on the place ahead, back and being arranged on this side and having the chair of side member of handrail on top and the estrade that can be from the use location supports aforementioned chair foldedly to use location not constitutes

Comprise the desk member that is installed on the aforementioned side member,

3, the supporting construction of desk member as claimed in claim 1, it is characterized in that, aforementioned side member comprises: be set in the handrail on the height and position of regulation, with the supporter that can support this handrail, aforementioned adjustment member allow face at table body above handrail the position and aforementioned along rotation desk supporter between the position of the bearing of trend of supporter.

4, the supporting construction of desk member as claimed in claim 3 is characterized in that, when aforementioned supporter was falling when rotating between position and the set-up positions, aforementioned adjustment member is kept the relative position of supporter and desk member.

5, as the supporting construction of claim 2,3 or 4 described desk members, it is characterized in that, at aforementioned desk member with adjust between the member, be provided with the detent mechanism that the rotation that can limit the desk supporter is moved.