CN103799740B - Chair - Google Patents

Abstract

Present invention offer is a kind of can to suppress the chair that occupant offsets and improves cooperation sense when taking a seat forwards.Wherein：Possess with the seat support for being used to change the depth change unit for taking a seat depth size（3）, the seat support（3）Possesses hard part, the hard part, which has, to be born to come from the load bearing plane of the load of occupant（P3）, the load bearing plane（P3）It is with seat datum mark（S1）Centered on formed by, than the seat datum mark（S1）Possesses the sloping portion being gradually increasing forwards at forward side（P31）, the depth changes unit and is configured to, and can be not accompanied by the load bearing plane（P3）Linkage movably change the seat support（3）Take a seat depth size.

Description

Chair

Technical field

The present invention relates to the chair that can change seat support depth.

Background technology

In the past, for bearing to come from the flat chair of the load bearing plane of load of occupant, change in occupant Situation of sitting posture etc., produces the unfavorable condition that occupant offsets forwards.In order to suppress the unfavorable condition, and it have developed each Plant the chair that a part for sitting face is recessed downwards.

On the other hand, have also been developed various can change the chair of the size with regard to sitting face depth（For example, referring to patent text Offer 1）.But, conventional chair can also be moved if depth is changed along with the live load bearing plane, so in the presence of being difficult to To build, different everybody gives the problem of optimal cooperation is felt.

Patent document 1：Japanese Unexamined Patent Publication 2003-284619 publications

The content of the invention

It is an object of the invention to provide can suppress occupant offset forwards and improve when taking a seat cooperation sense Chair.

The present invention is in order to solve problem as the above, using following such structure.That is, chair involved in the present invention Son, it is characterised in that：Possesses seat support, it, which has, is used to change the depth change unit for taking a seat depth size；The seat support possesses Hard part, the hard part, which has, to be born to come from the load bearing plane of the load of occupant；The load bearing plane is Formed by centered on seat datum mark, possesses the rake being gradually increasing forwards at than the forward side of seat datum mark Point；The linkage that the depth change unit is configured to be not accompanied by the load bearing plane movably changes the seat support just Sit depth size.

Herein, so-called " seat datum mark " refers to what is set out in design as the center of the load of occupant Point.

In addition, so-called " depth change unit ", as long as changing load bearing plane when taking a seat depth size of seat support The state that the position for being maintained at original stops will not link and move, it is possible to be any unit, for example, also including：Inner casing It is downward relative to the leading section that can be deformed that slide back and forth formula, that shell can be obtained that shell is relatively moved in the longitudinal direction State that portion rear is involved in and the opposing party's of the leading section of shell reeling-in type, being arranged at a side of the state extended forwards The front prolonged type that shell phase is relatively moved in the longitudinal direction for the shell of a side.

If such unit, can forwards it be offset by the presence of sloping portion to suppress occupant, and i.e. Change is taken a seat depth size, load bearing plane will not also link and move, thus can everybody different to physique give just Cooperation sense during seat.

As a preferred mode, it can enumerate：The hard part is in upper surface side there is the load to bear The shell in face；The depth changes unit and is arranged to, and inner casing can in the longitudinal direction be slided into shifting on the housing Set dynamicly, the inner casing is moved to desired sliding position by slide locating mechanism and lock；The inner casing, with it is described The corresponding position of load bearing plane possesses the load biography for coming from the load of occupant for undertaking the load bearing plane Pass part.

It is preferred that, the load transmitting portion of the inner casing can bear to come from the load of occupant and in a thickness direction bullet Property deformation untill being connected to the load bearing plane, the lower surface in the load transmitting portion when non-loaded is carried with described Space is at least partially formed between lotus bearing plane.

As a preferred mode for the load transmitting portion, it can enumerate：Born in inner casing with the load The corresponding position in face, sets many grooves for alternately forming and extending in the longitudinal direction in the lateral direction.

As the other mode of the load transmitting portion of the inner casing, it can enumerate：By the material system of plastic deformation freely Make, independently can be substantially adjacent to the load bearing plane always with the slip movement of the inner casing.

As the load transmitting portion of the inner casing other other modes, it can enumerate：It will be born with the load The part for the window-like that the corresponding whole region in face is removed.

The present invention is structure as above, offsets and improves just forwards so can provide and can suppress occupant The chair of cooperation sense during seat.

Brief description of the drawings

Fig. 1 is the outside drawing for representing the chair that an embodiment of the invention is related to.

Fig. 2 is the rearview for the chair that the embodiment is related to.

Fig. 3 is the central sectional view for the chair that the embodiment is related to.

Fig. 4 is Fig. 3 amplification view for wanting portion.

Fig. 5 is Fig. 2 line A-A sectional view.

Fig. 6 is the exploded perspective view for the chair that the embodiment is related to.

Fig. 7 is the shell of the seat support of the embodiment and the exploded perspective view of inner casing.

Fig. 8 is the exploded perspective view viewed from above of the seat support of the embodiment.

Fig. 9 is the exploded perspective view observed from below that the seat support of the embodiment is set to center.

Figure 10 is the upward view for locally omitting the seat support of the embodiment and representing.

Figure 11 is Figure 10 line B-B sectional view.

Figure 12 is in the Action Specification figure with being represented on Figure 11 identicals section.

Figure 13 is the decomposing rearview that the seat support for being related to the embodiment is locally omitted and represented.

Figure 14 is the decomposition from forward observation that the backrest of the embodiment and cover aggregate are locally omitted and represented Stereogram.

Figure 15 is the exploded perspective view from rear that the backrest of the embodiment is set to center.

Figure 16 is the exploded perspective view from rear that the backrest of the embodiment is set to center.

Figure 17 is the front view for the backrest shell and backrest lower cover for representing the embodiment.

Figure 18 is the backrest shell of the embodiment and the exploded perspective view of waist support device.

Figure 19 is the rearview for wanting portion for the waist support device for representing the embodiment.

Figure 20 is that the depth of the embodiment changes the Action Specification figure of unit.

Figure 21 is that the depth of the embodiment changes the Action Specification figure of unit.

Figure 22 is that the depth of the embodiment changes the Action Specification figure of unit.

Figure 23 is that the depth of the embodiment changes the Action Specification figure of unit.

Figure 24 is the shell and the exploded perspective view of inner casing for the seat support that variation of the invention is related to.

Figure 25 is the Action Specification figure for schematically showing the seat support that other variations of the present invention are related to.

Figure 26 is the Action Specification figure for schematically showing the seat support that the variation is related to.

Symbol description

C：Chair；S1、YS1：Seat datum mark；3、X3、Y3：Seat support；

31、X31、Y31：Shell；31c：Upper surface；P3、XP3、YP3：Load bearing plane；

P31、XP31、YP31：Sloping portion；32、X32、Y32：Inner casing；

327d、X327d、Y327d：Load transmitting portion；X327e：Lower surface；

Y327f：Space；Y327g：Groove；34：Slide locating mechanism

Embodiment

Hereinafter, referring to the drawings to applying the present invention to the office of synchronous tilting with one of rotating chair C situation Embodiment.

Chair C possesses as shown in Fig. 1~Figure 23：Leg body 1；It is supported on the top of the leg body 1, can horizontally rotates Support base 2；It is configured at the seat support 3 on the support base 2；Hypsokinesis action it can be arranged at the support base 2 Carry on the back pole 4；With the backrest 5 for being installed on the back of the body pole 4.

<Leg body>

Leg body 1 possesses as shown in Fig. 1~Fig. 6：The leg pedestal 11 of leg types of springs with castor 13；Be erected on this The leg pillar 12 of the central part of leg pedestal 11.The leg pillar 12 is the common pillar that gas spring is configured to main body, The upper end of the leg pillar 12 is provided with the support base 2.

<Support base>

Support base 2 as shown in Fig. 1~Fig. 6, Fig. 9 and Figure 15, support to horizontally rotate by the leg body 1 and It can in the vertical direction lift, and possess：It is installed on the shell 20 of the leg pillar 12；The main shaft 21 of back rest supports, its Insertion is installed on the shell 20；With reaction force generation mechanism (not shown) of fascinating, its pay power to the main shaft 21 and relative to The hypsokinesis action of the backrest 5 produces elastic reactance.The reaction force generation mechanism of fascinating is configured to, and can use not Helical spring and/or gas spring of diagram etc. pay the elastic reactance of direction of rotation to the main shaft 21, but due to being Common mechanism, so omitting the description.

<Seat support>

The seat support 3 possesses as shown in Fig. 1~Figure 13：Shell 31；Inner casing 32, it is with can be via sliding guide mechanism 33 slide mobile mode in the longitudinal direction is disposed on the shell 31；Slide locating mechanism 34, it is used to make the inner casing 32 Slide into desired sliding position and and be locked；Buffer part 35, it is configured on the inner casing 32；With seat support epidermis part 36, it surrounds the lower surface 326c of the peripheral part 326 of the buffer part 35 and the inner casing 32.

The shell 31 has in upper surface 31c sides and held as shown in Fig. 2~Fig. 9, Figure 11~Figure 13 and Figure 20~Figure 23 By the load bearing plane P3 for the load for coming from occupant.Shell 31 is in first half region 31a and later half region 31b by upper surface 31c form is set to different.Shell 31 possesses：Housing main body 311；Longitudinal rib 312, cross rib 313 and diagonal rib 314, it is protruded It is arranged at the upper surface 311a of the housing main body 311；With later half central portion 315, it is formed as making under the housing main body 311 The form of the neighbouring depression in the center of the later half region 31b on the 311b of surface, with to the upper of the housing main body 311 Encirclement wall 315a and the roof 315c by encirclement wall 315a jag 315b closings that surface 311a sides are protruded, shell master Body 311, longitudinal rib 312, cross rib 313 and diagonal rib 314 and later half central portion 315 are shaped to one using hard resin Body.The roof 315c of half central portion 315 lower surface 315e, has been provided projectingly downward longitudinal rib 315f and horizontal downwards in the rear Rib 315g.Protrusion end face 312a, 313a, 314a of the longitudinal rib 312, cross rib 313 and diagonal rib 314 and the later half central portion 315 roof 315c upper surface 315d is configured to, and belongs to the public curved surface P2 of 1 imagination.The imaginary public curved surface P2's belongs to The part of the first half region 31a, in the longitudinal direction each portion generally remain certain height, in the lateral direction with from center Portion's mode that both sides of the edge are gradually increasing to the left and right is bent.The imaginary public curved surface P2's belongs to the later half region 31b's Part, the mode that lateral front was gradually increasing in the past in the longitudinal direction is bent and other parts generally remain one with each portion The mode of fixed height is formed, and is bent in the lateral direction in the way of from central portion, both sides of the edge are gradually increasing to the left and right.Institute The region in addition to periphery that load bearing plane P3 is set in the later half region 31b is stated, is set as belonging to the imagination public Curved surface P2.Specifically, the load bearing plane P3 by the roof 315c upper surface 315d and be configured at upper surface 315d The longitudinal rib 312 of the left and right sides, protrusion end face 312a, 313a, 314a of cross rib 313 and diagonal rib 314 constitute.The load is born Face P3 is formed centered on being arranged at the seat datum mark S1 of the later half region 31b, more forward than seat datum mark S1 The position of side possesses the sloping portion P31 being gradually increasing forwards.By setting sloping portion P31, occupant can be suppressed Offset forwards, and cooperation sense when taking a seat can be improved.In addition, the 1st bar 23 being arranged under the shell 31 is anti-makees Firmly adjustment, adjustment is arranged at the spring pre- level pressure of the reaction force generation mechanism of fascinating in the support base 2 Power.2nd bar 24 is used for the height and position for adjusting seat support 3, and the line (not shown) for being connected to the bar 24 is being formed at the longitudinal rib 312 Recess 312b and housing main body 311 hole 311c in by and the upper end that is directed into the leg pillar 12 of the leg body 1 is attached Closely.3rd bar 25 is used for the angle for adjusting backrest 5, and the line (not shown) for being connected to the bar 25 is being formed at the recessed of the longitudinal rib 312 Portion 312c and it is formed in the roof 315c of later half central portion 315 groove 315h by and is directed into and is configured at shell 31 The gas spring of the backrest angle adjustment (not shown) of downside.The attachment structure of these lines is common structure, so omitting Explanation.

The inner casing 32 is as shown in Fig. 3~Figure 12 and Figure 20~Figure 23, corresponding with the load bearing plane P3 Position possesses for making the load bearing plane P3 bear to come from the load transmitting portion 327d of the load of occupant, possesses： Possesses the inner casing main body 321 in shelly for the stage portion 325 that the side of peripheral part 326 is uprised in adjacent peripheral edges portion；Be provided projectingly on The upper surface 326a of the peripheral part 326 of the inner casing main body 321 rib 326b, the inner casing main body 321 and rib 326b are by being capable of bullet Property deformation molding synthetic resin be integrated.The peripheral part 326 is surrounded by the outer ledge 364 of the seat support epidermis part 36, Its outermost edge possess extend upward to upper wall 326d.The region surrounded by stage portion 325 of the inner casing main body 321 327 are constituted based on following part：First half shell parts 327a, the first half region that it can slidably with the shell 31 Protrusion end face 312a, 313a, 314a of 31a longitudinal rib 312, cross rib 313 and diagonal rib 314 are adjacent to；Rear end shell parts 327b, its Protrusion end face that can slidably with the later half region 31b of the shell 31 longitudinal rib 312, cross rib 313 and diagonal rib 314 312a, 313a, 314a and the roof 315c upper surface 315d are adjacent to；With middle case part 327c, it makes the rear end housing Part 327b leading edge is smoothly connected to the back edge of the first half shell parts 327a.Moreover, in the middle case part 327c is provided with the load transmitting portion 327d.In the shell parts 327b of the rear end, in left and right on the middle case part 327c Side sets up many groove 327g for alternately forming and extending in the longitudinal direction, under no-load condition, is passed in the load Pass and be formed with space 327f between part 327d lower surface 327e and the load bearing plane P3.Load transmitting portion 327d Due to the groove 327g presence and can relatively easily elastic deformation in a thickness direction, be configured to come from receiving In the case of the load of occupant downwards elastic deformation and abutted with the load bearing plane P3 of the shell 31.That is, come from The load of occupant is finally born via the load transmitting portion 327d by the load bearing plane P3 of the shell 31.

Moreover, the inner casing 32 is configured to via sliding guide mechanism 33 in predetermined scope on the shell 31 Movement is inside slided in the longitudinal direction, and the linkage that can be not accompanied by the load bearing plane P3 movably changes the seat support 3 Take a seat depth size.That is, moved by making the inner casing 32 be slided relative to shell 31, can change seat support 3 takes a seat depth chi It is very little, but the load bearing plane P3 is arranged at shell 31, so will not link and move with the slip movement of the inner casing 32.

The sliding guide mechanism 33 possesses as shown in Fig. 6~Figure 13：Guide groove 322, it is formed at the inner casing 32 Multiple positions, extend in the longitudinal direction；Multiple sliding parts 331, sliding freely insertion is installed on these each guiding respectively for it Groove 322, has the anticreep head 332 with the upper surface 32a sliding contacts of the inner casing 32 in upper end；Installed with multiple sliding parts Portion 31e, it is used to fix the bottom 333 of these each sliding parts 331 and be arranged at the shell 31.If narration in detail, The guide groove 322 is respectively formed in four adjacent corners of the inner casing 32, is dashed forward respectively around these each guide grooves 322 Go out the head protection rib 323 for being provided with the anticreep head 332 for surrounding the sliding part 331.Each head protection rib 323 Protrusion end face 323a be set as belonging to the imaginary public curved surface P2.In addition, the anticreep head 332 of each sliding part 331 Upper surface 332a tilted by closing at each head protection in the way of in rib 323.Each sliding part 331 is in can be along The prism-shaped that the corresponding guide groove 322 is slided, has screwed hole (not shown) on lower surface 334.Each sliding part Installation portion 31e is respectively formed in four adjacent corners of the shell 31, in can be from the lower end of top and the sliding part 331 What portion 333 was fitted together to has basal edge tubular.Moreover, on these each sliding part installation portion 31e bottom 31f, being formed with can be from described The lower surface 31d sides of shell 31 make the Screw inserting hole (not shown) that Screw 31g is inserted, by by the Screw 31g It is screwed on the screwed hole 311c and each sliding part 331 is fixed on the shell 31.In addition, in Figure 11 and figure In 12, sliding part 331 is represented by double dot dash line.

The inner casing 32 for being oriented to and being slided in the longitudinal direction by the sliding guide mechanism 33 in said structure, can pass through institute Slide locating mechanism 34 is stated to position and be locked in desired sliding position.

The slide locating mechanism 34 possesses as shown in Fig. 6~Figure 13：Functional unit 341, it can be from lower locking bit Put（D）To upper latched position（U）Between carry out lifting action；With the holding section 31r of multiple positioning, it is along with inner casing 32 Slide mobile and selectively corresponding with the functional unit 341.The slide locating mechanism 34, under the functional unit 341 Drop to the lower latched position（D）And in the state of being sticked in corresponding holding section 31r, forbid the slip of the inner casing 32 to move It is dynamic, rise to latched position on described in the functional unit 341（U）In the state of, by the engaging solution with the holding section 31r Remove and allow the slip of the inner casing 32 to move.Lower surface from the operating side 349 of the functional unit 341 to the shell 31 31d sides protrude, on the shell 31 be provided with by the rising of the functional unit 341 on described latched position（U）Locking Bearing surface 31m.The functional unit 341 is the independent part all set respectively with the shell 31 and the inner casing 32, By the downward latched position of elastic reactance for the buffer part 35 being disposed on the inner casing 32（D）Applied by elasticity in direction Power.

If narration in detail, the functional unit 341 possesses：Functional unit main body 343, it being capable of the peace of insertion up and down Maintaining part 324 loaded on the inner casing 32, lower end side by be arranged at the groove 31h extended forwards, backwards of the shell 31 and to this The lower surface 31d sides of shell 31 are protruded；Head 344, it is arranged at the upper end of the functional unit main body 343, splices in described slow Rush the lower surface 35b in portion 35 and in lamellar；Lock pawl 345, it is arranged at the center section of the functional unit main body 343, Selectively it is sticked in some of multiple holding section 31r for being arranged at the shell 31；Anticreep projection 346, it is arranged at institute The lower end of functional unit main body 343 is stated, the bearing surface 31m is connected to；With button 347, it to encase supports the anticreep to dash forward The mode for playing 346 is installed on the bottom of the functional unit main body 343 using Screw 348, constitutes the operating side 349. The openend of the groove 31h on lower surface 31d of the bearing surface 31m along the shell 31 and formed, be configured to The upward 346a of the anticreep projection 346 of the functional unit 341 and the upward 347a of button 347 is set to be connected to the abutting Face 31m and it is slid back and forth together with the inner casing 32.In other words, be arranged at can be by hand for the functional unit 341 Refer to and be hooked in the position that is operated in the state of the upper surface side of seat support 3, by maintaining state of the finger hook on seat support 3 while The button 347 of functional unit 341 is operated, the major part of the seat support 3 comprising the functional unit 341 can be made outer relative to described Shell 32 is moved, and change seat support 3 takes a seat depth size.That is, the action for being configured to press with finger the button 347 becomes as former state Acted for engaging releasing, can be under the engagement released state while making the upward 346a and button 347 of anticreep projection 346 Upward 347a with bearing surface 31m sliding contacts while sliding back and forth inner casing 32.Make the button 347 and bearing surface 31m Abutting is to prevent irrational stress in each portion in order to which the holding of the actuating range of functional unit 341 is certain and carry The thoughts and feelings of height operation；Make the button 347 with bearing surface 31m sliding contacts while sliding back and forth inner casing 32, be in order to Finger hook can be maintained in the state of the upper surface of seat support 3 while operating the button of functional unit 341 as described above 347 and change take a seat depth size.

In addition, on the outside of the outside of the maintaining part 324 and the leading section of the groove 31h, as shown in Fig. 7~Fig. 9, point It She You not be used to make breach 324a, 31k that the anticreep projection 346 passes through.It is arranged at the breach in the outside of the maintaining part 324 The 324a and breach 31k being arranged on the outside of the leading section of the groove 31h, with what is overlapped in the state of making inner casing 32 most advance Mode is positioned, only in this condition, the functional unit 341 can be installed on into the inner casing 32 and shell 31.Should The head protection rib 323 of guide groove 322 of the inner side of maintaining part 324 with being configured at the front left side of seat support 3 via linking rib 324b Integration.That is, described maintaining part 324 is adjacent in one of described guide groove 322.

The buffer part 35 is for example in the lower surface 35b of ingot shape polyurethane as shown in Fig. 3~Fig. 6 and Fig. 8~Figure 12 The part of non-woven fabrics is pasted with, by load located at the upper surface 32a of the inner casing 32, the peripheral part 326 with the inner casing 32 Surrounded together by the seat support epidermis part 36.

Seat support epidermis part 36 possesses as shown in Fig. 1~Fig. 5 and Figure 10~Figure 12：What is be open downwards is in flat bag-shaped Epidermis part main body 361；It is formed at the bagging portion 362 of the edge of opening of the epidermis part main body 361；Be inserted through the bagging portion 362 rope 362a.The epidermis part main body 361 is the ear 363 that is protruded via exterior surface by the different a variety of faces of stretch characteristics Material（Zhang）361a, 361b suture.Specifically, epidermis part main body 361 is will to compare thick via ear 363 and be difficult to stretch Exhibition the 1st fabric 361a and than it is relatively thin and be imbued with extensibility the 2nd fabric 361b suture.In addition, as with fabric The key element of the difference correlation of stretch characteristics, can be enumerated in the structures such as difference, the difference of material, yarn fabric and the braid of thickness It is not equal.The 1st fabric 361a is mainly arranged at the position constituted with regard to sitting face P1, is formed as covering the buffer part 35 Upper surface 35a and above 35c form.2nd fabric 361b is arranged at described with regard to the region beyond sitting face P1, is formed as covering Side 35d, the back side 35e of the buffer part 35 and the lower surface 326c of peripheral part 326 of inner casing 32 form.The bagging portion 362, spliced by being tied up by the rope 362a in the lower surface 326c sides of peripheral part 326 of the inner casing 32, in the inner casing 32 It has been installed in the state of shell 31, has been incorporated in the gap between the inner casing 32 and shell 31.In addition, described inner casing 32 by In the upper upright wall 325a upwardly extended for forming the stage portion 325 and be arranged at outermost edge and extend upward to upper wall 326d presence, and be formed as with the form gradually extended upward from center towards periphery.In other words, the inner casing 32 Overlook as square part, will act as be by rope the seat support epidermis part 36 and a seat support wrap set the peripheral part Shape near 326 is set to the interim continuous rising of outermost edge.Moreover, the edge of bagging portion 362 of the seat support epidermis part 36 The lower surface in the inner casing 32 is formed with the outside configuration of the stage portion 325 of step difference, prevents the bagging portion 362 from inner casing 32 lower surface protrudes and turns into the obstacle of the sliding action of the inner casing 32.That is, inside and outside the stage portion 325, in inner casing 32 lower surface, step difference is formed with the mode that outside is higher than inner side, so by configuring described in the outside of the step difference Bagging portion 362, can prevent the bagging portion 362 from facing out the side of shell 31 from the following table of inner casing 32 and protruding.In addition, Fig. 3~Fig. 5, In Figure 11 and Figure 12, seat support epidermis part 36 is represented by double dot dash line.

<Backrest pole>

Backrest pole 4 possesses as shown in Fig. 3, Fig. 4, Fig. 6, Fig. 9, Figure 15 and Figure 16：By a left side for the making such as thick steel sheet Right paired backrest pole main body 41；It is set up in the reaction force that fascinates between the base end part 41a of these backrest pole main bodys 41 The axle 42 of generation mechanism；The top connecting piece 43 that will rigidly link between the top of the backrest pole main body 41；From described The top ends 41c top edges of backrest pole main body 41 are to the paired installing plate 44 in the left and right that inner side extends；Be set up in described lean on Being used between the pars intermedia 41b top edges of back of the body pole main body 41 constitutes the rear axle 45 of genlocing mechanism 26, via being inserted through The main shaft 21 of base end part 41a axis hole can be rotatably mounted to the support base 2.In the backrest pole main body 41 Between portion 41b provided with cover installation hole 41d and cover positioning projection 41e.Multiple bolts are equipped with the installing plate 44 Inserting hole 44a, nut 44b is installed with the lower surface corresponding with these each bolt insertion hole 44a by welding etc. respectively.And And, the upper surface 44c of the installing plate 44 is formed as the mounting surface 44d for installing the backrest 5.The installing plate 44 it Between, it is formed with the gap 44e of the top ends of gas spring for configuring the backrest angle adjustment.

The genlocing mechanism 26 is as shown in Fig. 3~Fig. 5, and for making seat support 3, ratio is entered at an angle with backrest 5 Capable action of fascinating, the support can be supported in movably forward and backward via front axle 27 by the front of the shell 31 of the seat support 3 The leading section of base portion 2, and the rear end side of the shell 31 is supported in via rear axle 45 the pars intermedia 41b of backrest pole 4.Before Axle 27 can be arranged in the elongated hole 22 of the leading section setting of the support base 2 slidingly back and forth, and its both ends is kept The front axle maintaining part 31n set in the front lower surface in the shell 31.Rear axle 45 is set up in described as described above The pars intermedia 41b of backrest pole 4, its both ends are held in the rear axle holding in the rear end side lower surface setting of the shell 31 Portion 31p.

<Backrest>

The backrest 5 possesses as shown in Fig. 1~Fig. 6 and Figure 14~Figure 18：Backboard 51, the buffering for surrounding the backboard 51 Portion 52 and be covered in the buffer part 52 outside backrest epidermis part 53.

The backboard 51 possesses as shown in Fig. 3~Fig. 5 and Figure 14~Figure 18：Backrest shell 54 with flexibility；Install There is the rigid backrest connector 55 in the backrest shell 54；With backrest lower cover 56, it is installed on the backrest shell 54 Bottom 54a, with the relative antethecas 562 of 54e before the bottom 54a with the backrest shell 54, before the backrest lower cover 56 Before the bottom 54a of the back side 564 of wall 562 and the backrest shell 54 between 54e, incorporating section open downwards is formed with 57。

Backrest shell 54 is formed as the waist corresponding with the waist of occupant as shown in Fig. 3~Fig. 5 and Figure 14~Figure 18 54c significantly bends and, close to the 3-dimensional shape of flat board, possessed with advancing upward：It is capable of the plate-like of elastic deformation Shell main body 541；From multiple longitudinal ribs 542 that 541f is integratedly provided projectingly before the shell main body 541, cross rib 543 and tiltedly Rib 544；With connection installation portion 545, it is in form of the back side recess for the central lower for making the shell main body 541, with to What 541f sides were protruded before the shell main body 541 surrounds wall 546 and the antetheca for closing the jag of the encirclement wall 546 547.Moreover, the projecting height of the longitudinal rib 542, cross rib 543 and diagonal rib 544 to be dimensioned so as to the waist of the backrest shell 54 54c centers in portion are higher nearby and gradually continuously reduced to the periphery of the backrest shell 54, each longitudinal rib 542, cross rib 543 And protrusion end face 542a, 543a, 544a of diagonal rib 544 are configured to belong to the public curved surface P4 of 1 imagination.The connection installation portion The forwardly 547a of 545 antetheca 547 is configured to be located at the same face with the imaginary public curved surface P4.In addition, in shell main body 541 Before 541f, be integrally formed with the bag installation of air bag 71 for keeping lumbar support described later nut portions 541a and The nut portions 541c, the nut portions 541a of the bag installation of the backrest lower cover installation top end face 541b belong to described The public curved surface P4 of imagination.The shell main body 541, the longitudinal rib 542, the cross rib 543, the diagonal rib 544, the connection are installed The nut portions 541c in portion 545, the nut portions 541a of bag installation and backrest lower cover installation, is molded using synthetic resin It is integrated.

The shell main body 541 is the tabular for being capable of elastic deformation accordingly smoothly bent with the 3-dimensional shape Part, possesses the perisporium 541a protruded forwards with certain altitude in both sides of the edge and top edge.The longitudinal rib 542 is mutual The interval of left and right directions and the interval of the mutual above-below direction of the cross rib 543, be set as waist 54c center nearby compared with Narrow, periphery is wider.On the cross rib 543 and diagonal rib 544 of the backrest shell 54, local dent is provided with for linking Guide part 543b, 544b that the air bag 71 and the tracheae 76 of the pump unit 73 are oriented to.

Connecting installation portion 545 is made from the central lower i.e. lower edge middle body of shell main body 541 of shell main body 541 to waist The area depression of the rectangular shape of backsight of portion's 54c middle bodies, by the encirclement wall 546 in shaped door and it is described before Wall 547 forms the installing space 548 for surface side opening of supporting or opposing.Encirclement wall 546 and the longitudinal rib 542, cross rib 543 and tiltedly Rib 544 is connected as one, in addition, the rear side in the antetheca 547 is provided with ribs 547b.And then, set in the antetheca 547 There are multiple bolt insertion hole 547c, in bolt insertion hole 547c front face side, be formed with for storing the head 549a of bolt 549 Spot-facing portion 547d.

Backrest connector 55 is to possess to be flush-mounted in the connection installation portion as shown in Fig. 3~Fig. 6 and Figure 14~Figure 16 The side of 545 connector main body 551 and the installation arm 552 extended forwards from the bottom of the connector main body 551 Depending on the part in L-shaped, the installation arm 552 is installed on to the mounting surface 44d of the backrest pole 4.Connector main body 551 To be tightly embedded in the part for the flat box-shaped that the front face side of the installing space 548 is opened, possesses ribs 551a inside it. The back side 54d of the back side 551b of the connector main body 551 and the backrest shell 54 is continuously same surface.In addition, the connection Part main body 551 possesses nut in the corresponding parts of the bolt insertion hole 547c of the connection installation portion 545 with the backrest shell 54 Portion 551c, by being embedded in the installing space 548 in connector main body 551 in the state of, by from 54e before backrest shell 54 The bolt 549 that side is inserted by the bolt insertion hole 547c is threadedly engaged with the nut portions 551c, by backrest connector 55 It is installed on the backrest shell 54.It is multiple to dewclaw 551d in being previously formed for the bottom of the connector main body 551.

Arm 552 is installed from the bottom of the connector main body 551 integrally to extend, possessed：Splice in the backrest branch The paired assembly wall 553 in the mounting surface 44d of bar 4 left and right；By this two assembly wall 553 median wall 554 connected to each other being integrated； With the sagging hanging wall 555 downwards of the outer ledge from two assembly wall 553, two assembly wall 553 with it is described The position that the nut 44b of backrest pole 4 is corresponding is formed with bolt insertion hole 553a, and in the front end of these assembly walls 553 Neighbouring portion is provided with the square hole 553b of cover installation.The upper surface 554a of the median wall 554 is located at than two assembly wall 553 The positions of upper surface 553c by the top.The installation arm 552 is installed on the backrest by the bolt 556 being installed on from upside The mounting surface 44d of pole 4.Specifically, by the way that the installation arm 552 is placed on the mounting surface 44d of the backrest pole 4 So as to the top ends 4a of backrest pole 4 is stored between the hanging wall 555 of the installation arm 552, will be from the installation arm 552 upper surface 552a sides insertion bolt insertion hole 553a bolt 556 is threadedly engaged the nut 44b with the backrest pole 4, Thus arm 552 is installed and is fixed on the backrest pole 4.So, the backrest shell 54 is installed via the backrest connector 55 In backrest pole 4.

The backrest lower cover 56 possesses as shown in Fig. 3~Fig. 6 and Figure 14~Figure 17：It is installed on the backrest shell 54 54b roof 561 before the 54a of bottom；The antetheca 562 extended downwards with the leading edge from the roof 561, described Incorporating section open downwards is formed with before the bottom 54a of the back side 564 of antetheca 562 and the backrest shell 54 between 54b 57.Then, the incorporating section 57 is split due to the presence of the installation arm 552 of the back of the body connector 55 by left and right.The top Edge possesses the mounting protrusion 563 with Screw hole 563a to wall 561 behind, by will be inserted through Screw hole 563a's Screw 567 and the nut portions 541c of the backrest lower cover installation of the backrest shell 54 are threadedly engaged, so that the backrest lower cover 56 It is installed on the backrest shell 54.The antetheca 562 possesses：Overleaf side have it is multiple bend downwards into lower claw 565a Entreat front wall section 565；With with the continuous both sides front wall section 566 in the both sides of the central front wall section 565, in the both sides antetheca The medial extremity of part 566, the side provided with the installation arm 552 with the backrest connector 55 is abutted against or close positioning Wall 566a.On before the backrest shell 54 corresponding with the both sides front wall section 566, it is formed with multiple to dewclaw 54f。

The lower end for storing the backrest epidermis part 53 is played as shown in Fig. 5 and Figure 15, as described later in the incorporating section 57 Opening edge portion 531a effect, it is described to be used to keep the backrest epidermis part 53 to lower claw 565a and to dewclaw 54f, 551d Lower ending opening edge part 531a.In addition, in a side of the incorporating section 57 split by left and right, being accommodated with conduct as described later The pump unit 73 of the air feed mechanism 72 of the major part of operating mechanism.

So described backboard 51 is based on the backrest shell 54, the backrest connector 55 and the backrest lower cover 56 Constitute, the backboard 51 is except the adjacent open end for installing arm 552 and the incorporating section 57 of the backrest connector 55 Substantially the entirety of position is surrounded by bolster 52.

The bolster 52 is to make splicing 54e before the backrest shell 54 as shown in Fig. 3~Fig. 6 and Figure 15 Ingot shape polyurethane 521 and splice the sheet polyurethane 522 in the back side 54d of the backrest shell 54 in the both sides of the edge of backrest shell 54 Engagement nearby, as described above in the form for packaging the whole backboard 51.That is, the bolster 52 is by the backrest shell 54 The connector main body 551 of the backrest connector 55 with being installed on the backrest shell 54 is all wrapped.The ingot shape polyurethane 521 Make polyurethane foam in mould and manufacture, adding at its back side has non-woven fabrics.The back shot of the ingot shape polyurethane 521 To be corresponding with the imaginary public curved surface P2 of the backrest shell 54, be set as with the longitudinal rib 542, the cross rib 543, it is described tiltedly The forwardly 547a of protrusion end face 542a, 543a, 544a of rib 544 and the connection installation portion 545 is abutted.In addition, at this Adjacent peripheral edges portion on the back side of ingot shape polyurethane 521, is formed with the groove 521a for the perisporium 541e for receiving the backrest shell 54.Institute State sheet（slab）Polyurethane 522 be by advance comprising be certain thickness foamed polyurethane raw material be cut to required for shape and Into, in Figure 15 and Figure 16, the diagram of the sheet polyurethane 522 is omitted.The outer surface of the bolster 52 so constituted by The backrest epidermis part 53 is surrounded.

The backrest epidermis part 53 possesses as shown in Fig. 1~Fig. 5 and Figure 15：There is the lower ending opening side in lower end The epidermis part main body 531 of edge 531a banding；Before being sutured on the lower ending opening edge part 531a of the epidermis part main body 531 The plastic central locking member 532 of side middle body；It is sutured in the front side on the lower ending opening edge part 531a The paired plastic two pendants stop part 533 in the left and right of two side portions；Be held in the lower ending opening edge part The metal extension of rear side on 531a stops wire rod 534.In addition, in Fig. 3~Fig. 5, backrest epidermis is represented by double dot dash line Part 53.

Specifically, the epidermis part main body 531 be will be relatively thicker and be difficult to the He of the 1st fabric 535 stretched via ear 537 Than the 2nd fabric 536 suture that is relatively thin and being imbued with extensibility.1st fabric 535 is formed as mainly continuously covering institute State the top half 52d of 52a, upper surface 52b and back side 52c before bolster 52 form.2nd fabric 536 is formed as covering Cover the side 52f and back side 52c of the bolster 52 the latter half 52e form.Positioned at the 1st fabric 535 and institute The ear 537 for stating the border of the 2nd fabric 536 is formed as the ridge form of exterior surface side protrusion, is covered by the back of the body epidermis part 53 When the bolster 52, the part of ear 537 stretching can be pinched.The center, which hangs stop part 532, has the sight on cross section The top ends 532a for being bent into U-shaped is examined, the i.e. described backrest lower casing of the lower edge that top ends 532a is hung over into the backboard 51 The lower edge of 56 central front wall section 565.The top ends 532a that the center hangs stop part 532 is clamped in the case where extension determines state And be held between the back side 565b of the central front wall section 565 and the 565a to lower claw.The two pendants stop part 533 With on cross section observation be bent into the top ends 533a of U-shaped, top ends 533a is hung over into the following of the backboard 51 Edge is the lower edge of the both sides front wall section 566 of the backrest lower cover 56.The only wire rod 534 of hanging is pacified in the way of locally exposing Lower edge portion loaded on the epidermis part main body 531, hangs the lower edge for terminating in the backboard 51.That is, the extension stop wire rod 534 with The lower edge portion of the epidermis part main body 531 together into the state in the incorporating section 57, hang terminate in it is described to dewclaw 54f, 551d。

The backrest 5 formed as described above is installed on the upward peace of the backrest pole 4 without upper vertical part Dress face 44d, the mounting portion is overall to be blocked by the covering of cover aggregate 6.Moreover, being assembled into lumbar support dress in the backrest 5 Put 7 all structural elements and blocking.

<Cover aggregate>

The cover aggregate 6 possesses as shown in Fig. 1~Fig. 6, Figure 14~Figure 16：Cover the downside of the backrest pole 4 Lower backrest pole cover 61；With the 1st, the 2nd of the upside for covering the backrest pole 4 the on backrest pole cover the 62,63, the described 1st Backrest pole cover 62 can be loaded and unloaded independently of each other with backrest pole cover 63 on the described 2nd.

The lower backrest pole cover 61 possesses as shown in Fig. 1~Fig. 6 and Figure 14~Figure 16：Cover main body 611, it is covered The downside of the backrest pole 4；With backboard closure 612, it is integrally formed at the cover main body 611, by the receipts of the backboard 51 Receive portion 57 and close and the epidermis part main body 531 of the backrest epidermis part 53 is held in the incorporating section 57.The cover main body 611 possess：Bottom plate 613；The side plate 614 for the left and right stood from the left and right sides edge of the bottom plate 613；Be arranged at this biside plate 614 medial surface, the rib 614b with the lower surface 4b and lateral surface 4c of the backrest pole 4 the lid positioning abutted, by closing Resin is molded as one.On the inner surface of the biside plate 614, the cover for being sticked in the backrest pole 4 is provided projectingly The projection 614a of the hole 41d of the installation cover installation in cross ribbed.So as to integrally be set in the rear end of the cover main body 611 There is the backboard closure 612.The backboard closure 612 possesses：Central portion leading edge and the bottom plate of the cover main body 611 The cover plate 615 of 613 continuous shapes of growing crosswise；With from the both ends leading edge of the cover plate 615 stand left and right foreboard 616, with The cover main body 611 is integrated by molding synthetic resin together.The cover plate 615 is in the institute with the lower ending opening to the backrest The corresponding form of the opening shape of incorporating section 57 is stated, there is the two ends installation base 615a that left and right is paired at both ends, and Possesses the paired middle installation base 615b in left and right in pars intermedia.The two ends installation base 615a and the middle installation are convex Platform 615b is respectively formed as the shape that can be inserted Screw (not shown) upward from lower face side, is inserted into described two End installation base 615a Screw threadingly engages in the nut portions 568 for being arranged at the backrest lower cover 56, and is inserted into The Screw of the middle installation base 615b threadingly engages in the lower backrest pole cover installation use for being arranged at the backrest shell 54 Nut portions 541g.So as to, under the installment state, the incorporating section 57 by the backboard closure 612 the envelope of cover plate 615 Close.The foreboard 616 of the left and right and the rear end of the side plate 614 of the cover main body 611 are continuous, are positioned as folder in the mounted state The antetheca 562 that gap with the backrest lower cover 56 is overlapped.That is, described back of the body epidermis part 53 is provided with the two pendants stop part 533 lower ending opening edge part 531a front part is covered by the foreboard 616.In addition, under in the backrest epidermis part 53 End opening edge part 531a rear side, is contained and keeps in the case where being pressed against the back edge state of the backboard closure 612 In in the incorporating section 57.

Backrest pole cover 62 covers the relative with mounting surface 44d of the back of the body pole 4 as shown in Fig. 3~Fig. 6 on described 1st The part answered, is installed on the installation arm 552 of the backrest 5 of the mounting surface 44d and is fixed on the installation arm 552 described The head 556a of the bolt 556 of backrest pole 4 backrest pole covers 62 on this are covered.In other words, can be only by by this Backrest pole cover 62 unloads and exposes the head 556a of the installation arm 552 and the bolt 556, can be leaned on from described Back of the body pole 4 unloads backrest 5.Backrest pole cover 62 has on upward in rear end and stood to be flat to lower channel shape on 1st Flange part 621, and there is the mounting jaw 622 that lower end is bent forwards in front end lower surface, the mounting jaw 622 engaged It will be pressed side thereafter in the square hole 553b for being arranged at the installation arm 552, thus as installment state.In installment state Under, the center of the lower ending opening edge part 531a in the backrest epidermis part 53 hangs the backrest pole on the 1st of stop part 532 and covered 62 flange part 621 is covered.

Backrest pole cover 63 covers exposing beyond the mounting surface 44d of the back of the body pole 4 as shown in Fig. 3~Fig. 6 on 2nd Backrest pole cover 62 is independent on part, with the described 1st.

In addition, the backboard closure 612 of the lower backrest pole cover 61 in the cover aggregate 6 being described above, shape Into the window 617 having for inserting the action bars 74 of the waist support device 7.

<Waist support device>

The waist support device possesses as shown in Fig. 2~Fig. 6 and Figure 14~Figure 19：The air bag 71 of lumbar support, It is configured between the backrest shell 54 of the backrest 5 and the bolster 52；With the air feed mechanism 72, its via Tracheae 76 is connected to the air bag 71, and air is supplied or discharge relative to the air bag 71.

The air bag 71 is the common gas for receiving the supply of air and expanding diminution as shown in Fig. 3~Fig. 5 and Figure 18 Capsule, 54e before the backrest shell 54 is held in via the bag 77 for being capable of plastic deformation.The bag 77 at least right and left To a side open, by the way that the Screw 78 to the left and right sides part insertion of upper end is threadingly engaged in into the backrest The nut portions 541a of the bag installation of shell 54, so as to be installed in 54e before the backrest shell 54.Moreover, in the bag The air bag 71 is accommodated with 77.That is, the longitudinal rib 542, cross rib 543 near the waist 54c of the backrest shell 54 and Protrusion end face 542a, 543a, 544a addition of diagonal rib 544 are provided with the bag 77 that can be deformed, can be swollen in the bag 77 Breathing maintains the air bag 71 smallly.

The air feed mechanism 72 possesses as shown in Fig. 2, Fig. 6 and Figure 14~Figure 19：Sky is supplied to the air bag 71 The pump unit 73 of gas；Action bars 74 with for driving the pump unit 73, constitutes the major part of the air feed mechanism 72 The pump unit 73 is incorporated in the incorporating section 57 for the bottom for being formed at the backrest 5.In other words, air supply machine Structure 72 possesses：The action bars 74, it can clip reference position S2 and be operated to its both sides；Pump 731, it is by relative to institute The action bars 74 that reference position S2 operated to a side side i.e. upper side is stated to exert a force and supply air to the air bag 71；Release Put valve 732, its from relative to the reference position S2 to the opposing party side be the action bars 74 that lower side is operated exert a force and Air in the air bag 71 is discharged to outside；Suppress unit 733 with opposite work, it prevents or suppressed the action bars 74 are crossed the reference position S2 and are operated to the opposing party side due to the opposite driving force from the pump 731.

The pump unit 73 is can be in above-below direction by the action bars 74 as shown in Figure 16, Figure 18 and Figure 19 On pump 731, the relief valve 732, the opposite work described in the over-assemble of bar support member 79 that rotationally supports suppress unit 733 and blocking, be incorporated in the incorporating section 57 so that the action bars 74 from the lower end of the backrest 5 laterally It is prominent.The bar support member 79 be possess by Screw be fixed on the incorporating section 57 courtyard part top plate 791 and from The metal part of the front and rear two edges of the top plate 791 sagging bar installing arm 792 downwards, in the bar installing arm 792 On the base end part 74a of the action bars 74 can rotationally be supported by axle.The pump 731 is that possess with the special list of inflow To the air inflow aperture 731a of valve and the pump of the rubber system ball-type of the outlet 731b with discharge special single-way valve, receiving to press Reduced in the case of pressure and discharge internal air from the outlet 731b, in the case where the pressing force is eliminated one While it is original shape to obtain air one side ego resilience from the air inflow aperture 731a.The relief valve 732 directly links In the outlet 731b of the pump 731, outlet 731b is made in the state of air inflow aperture 731a is not pressed via described Tracheae 76 is connected with the air bag 71, by the air in the air bag 71 only during the air inflow aperture 731a is pressed Discharged into air.In addition, the pump 731 and the relief valve 732 are common parts, so detailed structure explanation is saved Slightly.The opposite work suppresses unit 733, possesses bar main body 74b in the action bars 74 from the reference position S2 to another The region that one side side is rotated is to the reference position S2 directions spring 733a elastic force-applying to bar main body 74b.

The action bars 74 is as shown in Figure 1, Figure 2, shown in Fig. 4~6 and Figure 14~Figure 19, possess：The bar main body 74b, its It can rotate and be supported by the bar support member 79；Pump press section 74c, it is arranged at bar main body 74b, in bar main body 74b It is rotated exerting a force to the pump 731 in the case of operating from the reference position S2 to a side side；With valve press section 74d, its The relief valve 732 is applied in the case where the bar main body 74b is rotated operation from the reference position S2 to the opposing party side Reinforcing, the pump press section 74c and valve press section 74d set with the bar main body 74b and are integrated in this embodiment.Institute State action bars 74, its tip side be configured to towards tiltedly lower outside, by by the top operation part 74f of the action bars 74 from base Level puts S2 and pulls up and the pump press section 74c is pressed the pump 731 and exert a force, by by the action bars 74 from benchmark Position S2 is pressed down on and the valve press section 74d is pressed the operation button 732a of the relief valve 732 and exert a force.The operation Bar 74, be the base end part 74e, the pump press section 74c and the valve press section 74d of the bar main body 74b are accommodated in it is described In incorporating section 57, the tip side for constituting the top operation part 74f of the action bars 74 action bars 74 is being set In lower backrest pole cover 61 backboard closure 612 window 617 by and extend outward.

In addition, the air discharged from the pump 731 of the pump unit 73 via relief valve 732 via the tracheae 76 to described Air bag 71 is directed.The tracheae 76 extends from the pump unit 73 for the side side for being accommodated in the incorporating section 57, in the backrest branch The opposing party side between bar 4 and lower backrest pole cover 61 by and to incorporating section 57 is directed, from the incorporating section 57 in backrest shell Before 54 54e by and reach the back side 77a sides of the bag 77, be connected to the air bag exposed in back side 77a sides 71 air (not shown) export entrance.

Below, seat support 3 is described in detail.

The seat support 3 of present embodiment possesses：The shell 31；It is outer that this can be slidably and movingly disposed in the longitudinal direction The inner casing 32 on shell 31；It is configured at the buffer part 35 of the top of the inner casing 32；Be configured at the outer of the buffer part 35 The seat support epidermis part 36 of side, be by the rope 362a of the outer ledge 364 by the seat support epidermis part 36 is arranged at fasten and from The so-called part with seat support type of inner casing 32 described in outer side covers and buffer part 35.In addition, the seat support 3 of present embodiment has The depth that depth size is taken a seat for changing changes unit, and the depth changes unit and is configured to be not accompanied by the load to hold Interlocked by face P3 change the seat support 3 with dividing a word with a hyphen at the end of a line take a seat depth size.

The shell 31 and the inner casing 32 are respectively formed as the shape of bending below mediad, and then, shell 31 Load bearing plane P3 bend so that forward portion position than rear portion by the top, the load transmitting portion 327d of inner casing 32 bending So that forward portion position is than rear portion by the top.

The bending of the load bearing plane P3 of the shell 31 curved shape and the load transmitting portion 327d of the inner casing 32 Shape is different.That is, compared with the load bearing plane P3 of shell 31 sloping portion P31, the inclination of inner casing 32 is set to Relatively delay.Therefore, inner casing 32 turns into the state floated in fore-and-aft direction middle body while being supported front and rear by shell 31, The center of inner casing 32 is drawn downwards during imposed load, is easily demonstrated flexibility.In addition, with the load bearing plane P3's of shell 31 Sloping portion P31 is compared, and the load transmitting portion 327d of the inner casing 32 corresponding with sloping portion P31 inclination is set to Relatively delay, so being formed with the space 327f between load bearing plane P3 and load transmitting portion 327d lower surface 327e. Space 327f is set to, and is become maximum when making inner casing 32 be slidably moved to rearmost relative to shell 31, now upper Lower size is about 10mm~20mm.

In addition, on shell 31, the rake is formed with along the load bearing plane P3 of the shell 31 curved shape Divide P31.Due to sloping portion P31 presence, occupant can be suppressed and offset forwards, and improve cooperation when taking a seat Sense.Load bearing plane P3 is during the seat datum mark S1 that will in design be set out as the center of the load of occupant is set to Formed by the heart, in the case of 1 leg as the present embodiment, the load of occupant puts on pillar in axial direction 12, thus by the pillar 12 just on be set to seat datum mark S1, the sloping portion P31 is configured to than seat datum mark S1 Forward side.

Load bearing plane P3 will not be moved along with inner casing 32 and the load transmitting portion 327d of the inner casing 32 slip Move and move.That is, the load bearing plane P3 is moved horizontally by castor 13, or is fascinated by genlocing mechanism 26, but It will not be moved because changing the taking a seat depth size of seat support 3.The load of later half central portion 315 will be arranged at therefore, it is possible to one side Bearing plane P3 remains certain position while making the depth change in size of seat support 3.

In addition, the rib protruded upward and/or projection etc. are not formed on the load bearing plane P3 of shell 31, in addition, The groove 327g extended in the longitudinal direction is only formed with the load transmitting portion 327d of inner casing 32, therefore is not formed downwards The prominent rib in side and/or projection etc..Therefore, when making inner casing 32 slide back and forth mobile relative to shell 31, easily skid.

Shell 31 possesses：In the housing main body 311 of shelly, it is formed as, except near later half region 31b center Later half central portion 315 outside, be gradually increasing and bend to periphery；With longitudinal rib 312, cross rib 313 and diagonal rib 314, it integrally sets The position in addition to later half central portion 315 being placed on the upper surface 311a of the housing main body 311.The shell 31 possesses：4 institutes Sliding part installation portion 31e is stated, it is arranged at four angles portion nearby；The holding section 31r, it is arranged at these sliding part installation portions It is located at the left front sliding part installation portion 31e of seat support 3 outside in 31e；The groove 31h, it is arranged at the outer of holding section 31r Side, in the vertical direction insertion；With the bearing surface 31m, it is arranged near groove 31h lower surface open end.

The i.e. described operating side 349 of the operating portion of the seat support sliding equipment slid back and forth is configured at the lower section of the shell 31, The operating side 349 be arranged to than the left side of seat support 3 side edge more in the inner part.The functional unit 341 is push button, is set Into can in the vertical direction be acted relative to regard to sitting face P1.In other words, the bottom of the functional unit 341 is from seat support 3 The lower surface 31d of shell 31 is protruded downwards, is set as that the action pressed upward from the finger of occupant is changed into described as former state Holding section 31r engaging releasing action.I.e., in the present embodiment, the button 347 is formed as one with the holding section 31r Body, the action of the above-below direction of operating side 349 is transmitted and turns into the action of holding section 31r above-below direction as former state.So, this reality The functional unit 341 for applying mode is slided in the vertical direction relative to mobile inner casing 32 is slided in the longitudinal direction, Neng Gouyou Alternatively choose fastening state and non-engagement state.In addition, the upper surface on the head 344 of functional unit 341 is flat, by following table Add the bolster 35 for having non-woven fabrics (not shown) and press downwards in face 35b sides.

The part corresponding with the peripheral part 326 of inner casing 32, in the lower surface 326c and shell 31 of inner casing 32 upper surface Gap is formed between 32a.On the other hand, the part corresponding with the region 327 that inner casing 32 is surrounded by stage portion 325, i.e. The part corresponding with the upper upright wall 325a of the stage portion 325 inner side, in the upper table of the lower surface and shell 31 of inner casing 32 Gap is not formed between the 32a of face.So as in the scope near the center of the seat support 3 very close to each other, be configured with slip and lead To mechanism 33 and slide locating mechanism 34, it is set as in sliding action producing and clatters.

In addition, the upper surface on the anticreep head 332 of the sliding part 331 configured in the guide groove 322 of inner casing 32 332a, is set as turning into the same face with the protrusion end face 323a of rib 323 with the head protection of the inner casing 32.So as to buffer part The 35 lower surface 35b part corresponding with the sliding guide mechanism 33, with jag of the head protection with rib 323 The upper surface 332a of face 323a and sliding part 331 is corresponding and tilts.So, by the way that the sliding part 331 is set to and chair The corresponding shape of bending of seat 3, it is not necessary to the incision of useless buffer part 35, it is possible to increase take a seat sense.

Next, one side 20~Figure 23 of reference picture to the change for taking a seat depth size while illustrate.In addition, in Figure 20 In~Figure 23, the end face after the position cut-out misplaced slightly near left and right directions center by shell 31 and inner casing 32 is represented, To having paid pattern on the load transmitting portion 327d provided with groove 327g of inner casing 32.

First, in Figure 20 and Figure 21, represent that inner casing 32 is located relatively at state, the i.e. inner casing at rear relative to shell 31 32 are configured at the state of rear slide position.As shown in figure 20, in the state of without the load for applying occupant, described outer It is formed between the load bearing plane P3 of shell 31 and the load transmitting portion 327d of inner casing 32 lower surface 327e than larger sky Between 327f.If from the state, applying the load come from above of occupant, then as shown in figure 21, having for inner casing 32 is soft Soft load transmitting portion 327d deflection deformations downwards, load bearing plane P3 and load transmitting portion 327d lower surface 327e is abutted against, and the space 327f disappears.

Next, in Figure 22 and Figure 23, show that inner casing 32 is located relatively at the state, i.e. interior in front relative to shell 31 Shell 32 is configured at the state of front sliding position.As shown in figure 22, in the state of without the load for applying occupant, described It is formed between the load bearing plane P3 of shell 31 and the load transmitting portion 327d of inner casing 32 lower surface 327e smaller Space 327f.If applying the load come from above of occupant from the state, as shown in figure 23, having for inner casing 32 is soft Property load transmitting portion 327d deflection deformations downwards, load bearing plane P3 and load transmitting portion 327d lower surface 327e Abut against, the space 327f disappears.

So, according to the sliding position, the scope that can be bent of the inner casing 32 of seat support 3 can change.

In addition, the situation that inner casing 32 is configured at rear slide position by the smaller occupant of physique is more, in no-load The space 327f, which is formed, under state, so also being bent even if the lighter inner casing 32 of body weight, can easily be shown than larger Effect as resiliency.On the other hand, inner casing 32 is configured at the situation of front sliding position than larger occupant by physique More, the space 327f forms smaller under no load state, so heavier-weight can be obtained also by the jail of shell 31 Admittedly bear such effect.

In addition, backrest 5 is unrelated with physique with the distance with regard to sitting face P1, substantially certain, with load bearing plane P3 along with The change for taking a seat depth size of seat support 3 and the conventional chair that moves are compared, the load bearing plane of the seat support 3 of present embodiment P3 will not be mobile along with the slip and moved, so numerous people that can be different to physique give most suitable cooperation sense. In other words, the seat support 3 of present embodiment can change seat support 3 just by making inner casing 32 slide mobile relative to shell 31 Depth size is sat, but the load bearing plane P3 will not link and move with the slip movement of inner casing 32.That is, seat support is being changed Load bearing plane P3 is provided with 3 shell 31 that will not be moved when taking a seat depth size along with the change.It is additionally, since The sloping portion P31 set in the shell 31 presence, can suppress occupant and offset forwards as described above, and occupant Power downwards it is uniformly applied, so can improve cooperation sense.

In addition, by the structure, can also obtain making inner casing 32 relative to the action that shell 31 rearward slides movement hold Easily carry out such effect.That is, especially in the chair C provided with mobile units such as castors 13, inner casing 32 is made relative to shell In the case that 31 move relatively forward, occupant can lean against on backrest 5 and the backrest 5 is used as scaffold, while to Front is straightened one's back while carrying out slide, so can relatively easily carry out, but is not had in the case of relative be moved rearwards by The thing that can be used as scaffold, thus be difficult to simply to be seated with occupant just carry out as slide this Problem.But, if structure as the present embodiment, then the load transmitting portion 327d for being arranged at inner casing 32 is being born In the case of load from occupant, elastic deformation downwards, the load transmitting portion 327d and load bearing plane P3 Abut against, thus make inner casing 32 relative to shell 31 it is relative be moved rearwards by the case of, occupant is to the sloping portion P31 Inclined upper end move about load, as long as making the position of waist move so that body weight puts on sloping portion P31, just can Enough inner casing 32 is set rearward to move by main points as sliding stand using the body weight of occupant.So, by by occupant's Load puts on sloping portion P31, produces the power for rearward sliding decline, cunning rearward can be more simply carried out than ever Action.

Change as described above, the chair C involved by present embodiment possesses with the depth that depth size is taken a seat for changing Become the seat support 3 of unit, the seat support 3 possesses with the load bearing plane P3 for bearing the load from occupant as hard portion The shell 31 of part, the load bearing plane P3 is formed centered on seat datum mark S1, on front side of than seat datum mark S1 Place possesses the sloping portion P31 being gradually increasing forwards, and the depth changes unit and is configured to be not accompanied by the load What bearing plane P3 linkage movably changed the seat support 3 takes a seat depth size, can suppress occupant and offset forwards, and Take a seat depth size load bearing plane P3 even if changing and will not also link movement, so numerous people that can be different to physique give just Cooperation sense during seat.

In the present embodiment, the hard part is the shell in upper surface 31c sides with the load bearing plane P3 31, the depth changes unit and is configured to, and can slidably and movingly set inner casing 32 in the longitudinal direction on the shell 31 Put, the inner casing 32 can be made to be moved to desired sliding position and lock by slide locating mechanism 34, the inner casing 32, with Position corresponding the load bearing plane P3 possesses for bearing to come from the load of occupant by the load bearing plane P3 The load transmitting portion 327d of lotus, so numerous people that can be different to physique give cooperation sense when taking a seat.And, it may have no Shape by shell 31 or so ground is easily adjusted with regard to effect as sitting face P1 shapes.If narration, can be formed in detail Possess be applied with take a seat load when and occupant buttocks and huckle coordinate sloping portion P31 load bearing plane P3, and formation can be set to relatively flat shape with regard to the upper surface 35a of sitting face P1 buffer part 35 shape.In this implementation In mode, it is not only able to the upper surface 35a of buffer part 35 being set to relatively flat shape and improves outward appearance, also can be easily Seat support epidermis part 36 is deployed.Moreover, the upper surface 35a of the buffer part 35 corresponding with load bearing plane P3 when taking a seat is downward Side's depression, offsets while giving cooperation sense when taking a seat forwards so can suppress occupant.

In addition, the load transmitting portion 327d of the inner casing 32 can bear the load from occupant and in thickness direction On obtain elastic deformation untill being connected to the load bearing plane P3, load transmitting portion 327d's when non-loaded Space 327f is formed between lower surface 327e and the load bearing plane P3, is taken a seat so can be relaxed by space 327f When impact, it is possible to increase take a seat sense.

The load transmitting portion 327d is the position corresponding with the load bearing plane P3 in inner casing 32 in left and right Side sets up the part for alternately forming many groove 327g extended in the longitudinal direction, so easily by inner casing 32 Moved in the longitudinal direction on shell 31, and then can be in the state of the load of occupant is not applied in adjacent groove 327g Between the appropriate lower surface 35b sides for supporting buffer part 35.

In addition, the present invention is not limited to the embodiment described above.

The chair of the present invention can also not have backrest.

Depth changes unit, before integrally being relatively moved in the longitudinal direction relative to shell except inner casing as described above Slidingtype afterwards, it is also contemplated that for example can obtain state that the leading section that can be deformed of shell is involved in bottom rear with to The reeling-in type of the state of front extension, i.e., reduce taking a seat for seat support by being set to the indrawn state in leading section of the shell Depth size, by be set to state that the leading section of the shell extends forwards and increase seat support take a seat depth size.Enter And, it is also contemplated that being arranged at the shell phase in the longitudinal direction of the shell phase of the opposing party of the leading section of the shell of a side for a side To mobile local sliding back and forth formula, in other words, can obtain can protrude what be submerged from the leading section of the shell of a side The front prolonged type of state that the shell of the opposing party submerges the shell of a side and the state extended forwards, i.e., by be set to it is described separately What the shell of one side submerged the state of the shell of a side and reduced seat support takes a seat depth size, by being set to the shell of described the opposing party from one The state that extends forwards of shell of side and increase seat support take a seat depth size.

Hard part is not limited to shell or inner casing and/or other shells.

Load transmitting portion, as long as in order that load bearing plane bears to be arranged at and the load from the load of occupant The part at the corresponding position of lotus bearing plane, it is possible to be any part, for example, as shown in figure 24, including can also being formed The window of shell X32 above-below direction insertion.That is, inner casing X32 load transmitting portion X327d can also will be born with the load The part for the window-like that whole region corresponding face XP3 is removed.In addition, for Figure 24 each several part, in the embodiment party " X " is paid on the corresponding symbol of formula and detailed description is omitted.

Alternatively, it is also possible to which as shown in Figure 25 and Figure 26 signals, inner casing Y32 load transmitting portion Y327d is become by flexibility Shape material freely makes, the slip movement with the inner casing Y32 independently can always with the load bearing plane YP3 substantially It is adjacent to.That is, the seat support Y3 involved by the present embodiment, which possesses to have, to be born to come from the load bearing plane YP3's of the load of occupant Shell Y31, the load bearing plane YP3 is that seat datum mark YS1 is set to formed by center, than the seat datum mark Possesses the sloping portion YP31 being gradually increasing forwards at the forward sides of YS1, the depth change unit can be not accompanied by described What load bearing plane YP3 linkage movably changed the seat support Y3 takes a seat depth size, the inner casing Y32 with the load Position corresponding bearing plane YP3 possesses the load transmitting portion for making load bearing plane YP3 bear the load from occupant Divide Y327d.Inner casing Y32 load transmitting portion Y327d is made by the material of plastic deformation freely, so as shown in figure 25 Such inner casing Y32 be located relatively at rear relative to shell Y31 in the case of, be substantially adjacent to the load bearing plane YP3, and In the case where inner casing Y32 like that as shown in figure 26 is located relatively at front relative to shell Y31, also change the load transmitting portion Y327d shape and be substantially adjacent to the load bearing plane YP3.In addition, it is not shown, even if being between Figure 25 and Figure 26 State, the load transmitting portion Y327d is also substantially adjacent to load bearing plane YP3.Even such variation also can Obtain and above-mentioned embodiment identical effect.

In addition, provided with the groove extended in the longitudinal direction on inner casing, if but in addition made in the longitudinal direction The rib and/or jog of extension grade, then when being moved in the longitudinal direction relative to the shell, and inner casing can be by these ribs And/or jog grade guiding and make it easier to slide.

In addition, various changes can also be carried out in the range of lossless spirit of the invention.

Claims (6)

1. a kind of chair, it is characterised in that：

Possess with the seat support for being used to change the depth change unit for taking a seat depth size；

The seat support possesses hard part, and the hard part, which has, to be born to come from the load bearing plane of the load of occupant；

The load bearing plane be formed by centered on seat datum mark possess at than the forward side of seat datum mark to The sloping portion that front is gradually increasing；

The depth changes unit and is configured to, and the linkage that can be not accompanied by the load bearing plane movably changes the seat support Take a seat depth size, and

The depth changes unit and is configured to, and can slidably and movingly be provided with interior with load transmitting portion in the longitudinal direction Shell, and the inner casing can be made to move integrally desired sliding position and lock, the load transmission by slide locating mechanism Part be in the case where receiving the load for coming from occupant downwards elastic deformation and abutted with the load bearing plane Load transmitting portion.

2. chair according to claim 1, wherein：

The hard part is the shell in upper surface side with the load bearing plane；

The depth changes unit and is configured to, and can slidably and movingly be provided with described in the longitudinal direction on the housing Inner casing, makes the inner casing be moved to desired sliding position and locks by slide locating mechanism；

The inner casing, at the position corresponding with the load bearing plane, possesses the load transmitting portion, for making the load Lotus bearing plane undertakes the load for coming from occupant,

Compared with the inclination of the sloping portion of the load bearing plane of the shell, by the load transmitting portion of the inner casing The inclination divided is set to relatively delay.

3. chair according to claim 2, wherein：

The load transmitting portion of the inner casing can bear to come from the load of occupant and elasticity becomes in a thickness direction Shape is untill being connected to the load bearing plane, and lower surface and the load when non-loaded in the load transmitting portion Space is at least partially formed between bearing plane.

4. chair according to claim 3, wherein：

The load transmitting portion is between being set in the lateral direction at the position corresponding with the load bearing plane of inner casing Many grooves extending in the longitudinal direction are formed with every ground.

5. chair according to claim 2, wherein：

The load transmitting portion of the inner casing is made by the material of plastic deformation freely, and the slip movement with the inner casing is independently Can substantially it be adjacent to the load bearing plane always.

6. chair according to claim 2, wherein：

The load transmitting portion of the inner casing is by the window-like of the whole region removing corresponding with the load bearing plane Part.