CN103096759B - Chair - Google Patents

Abstract

The backrest of chair is made to want to make sight line when front when raised state is toppled over a little, the headrest of chair rises relative to backrest, the sight line of seated person can be made in front, in addition, when wanting to take sleeping position when making backrest topple over significantly, because the headrest of chair is toppled over relative to backrest, so chair has the back frame (8) that can rise down, with the head frame (22) that can rise down relative to back frame (8), back frame (8) is more toppled over from its raised state, head frame (22) more rises relative to back frame (8), before head frame, after becoming the angle of regulation relative to the axle angle [alpha] of the above-below direction of above-mentioned back frame, back frame (8) is more toppled over further, head frame (22) is more toppled over relative to back frame (8), in addition, back frame (8) is more risen from its lodging state, head frame (22) more rises relative to back frame (8), become the angle of regulation in above-mentioned angle [alpha] after, back frame is made more to rise (8) further, head frame (22) is more toppled over relative to back frame (8).

Description

Chair

Technical field

The present invention relates to chair.

Background technology

In the past, there are known to following chair, namely, comprise the backrest that utilizes the bolster that is fixed on the rear portion of chair can arrange rotatably along the fore-and-aft direction of chair and the top at this backrest, the headrest that can arrange rotatably along the longitudinal direction, backrest is more rearward toppled over, and relative to backrest, headrest more little by little rises (with reference to patent document 1).

Patent document 1: No. 3618443rd, Japan Patent

For above-mentioned chair in the past, when seated person is by making the backrest of chair rearward topple over a little from its raised state and cosily watch TV etc., because the backrest of chair is more toppled over, the headrest of chair more little by little rises relative to backrest, even if so under the state of toppling over a little at the backrest of chair, seated person also can easily visual identity front, such as, easily watch TV etc.

But the situation at seated person by making the backrest of chair topple over larger as sleeping position is inferior, if the headrest of chair also rises further relative to backrest and rises to more than regulation, then the load caused the neck of seated person becomes large.In addition, when seated person is sleeping position, the headrest of chair does not preferably rise relative to backrest.Therefore, in the process manually making the headrest of chair topple over relative to backrest, there is its manual operation and bother such problem.

Summary of the invention

Therefore, the object of the invention is to, a kind of chair is provided, when making backrest topple over a little from raised state and want sight line to remain on front, the headrest of chair and the action of toppling over of backrest are risen relative to backrest in linkage, the sight line of seated person can be made in front, and when wanting to obtain sleeping position by making backrest topple over significantly, the headrest of chair and the action of toppling over of backrest are toppled in linkage relative to backrest.

In order to solve above-mentioned problem, the feature of chair of the present invention is, this chair has the back frame that can rise down and the head frame that can rise down relative to this back frame,

Above-mentioned back frame is more rearward toppled over from its raised state, above-mentioned head frame more rises relative to above-mentioned back frame, above-mentioned head frame, after the angle that becomes regulation relative to the angle of the axle of the above-below direction of above-mentioned back frame, back frame is more rearward toppled over further, above-mentioned head frame is more toppled over relative to above-mentioned back frame

Above-mentioned back frame is more risen from its lodging state, above-mentioned head frame more rises relative to above-mentioned back frame, above-mentioned head frame, after the angle that becomes regulation relative to the angle of the axle of the above-below direction of above-mentioned back frame, above-mentioned back frame is more risen further, and above-mentioned head frame is more toppled over relative to above-mentioned back frame.

In chair of the present invention, also can be, the guiding elements that this chair also has guiding groove and can be located at movably in this guiding groove,

The position of above-mentioned guiding elements in above-mentioned guiding groove changes according to above-mentioned back frame angle of inclination with respect to the horizontal plane,

By the change in location of above-mentioned guiding elements in above-mentioned guiding groove, above-mentioned head frame, change relative to the angle of the axle of the above-below direction of above-mentioned back frame.

In chair of the present invention, also can be, this chair also has sliding frame, and this sliding frame changes according to this back frame angle of inclination with respect to the horizontal plane relative to the position axial up and down of above-mentioned back frame,

Changed at relative position axially up and down by above-mentioned back frame and sliding frame, above-mentioned head frame, change relative to the angle of the axle of the above-below direction of above-mentioned back frame.

In chair of the present invention, also can be that above-mentioned back frame is more rearward toppled over, above-mentioned sliding frame more moves to seat direction relative to this back frame, above-mentioned back frame is more risen, and above-mentioned sliding frame more moves to direction, above-mentioned seat opposition side relative to this back frame.

In chair of the present invention, also above-mentioned guiding groove can be located at head frame.

The present invention in back frame from its raised state until before head frame, in during the angle that the angle of the axle of the above-below direction of back frame becomes regulation, back frame is more toppled over, head frame more rises relative to back frame, back frame is more risen, head frame is more toppled over relative to back frame, thus seated person is when watching the TV etc. in front when making back frame (backrest) topple over a little from its raised state, rise relative to back frame compared with during the erecting of head frame (headrest) and back frame, the sight line of seated person is made easily to remain on front.

In addition, in back frame from its lodging state until before head frame, during the angle that becomes regulation relative to the angle of the axle of back frame above-below direction in, back frame is more toppled over, head frame is more toppled over relative to back frame, back frame is more risen, and head frame more rises relative to back frame, thus when obtaining sleeping position etc. when making back frame (backrest) topple over significantly, the neck of seated person can not be tired, can obtain posture easily.

In addition, because chair of the present invention is toppled over without the need to manually making head frame as above-mentioned conventional art, with back frame play reverse motion in linkage, head frame rises down as described above relative to back frame, thus be do not worry the angle of headrest, the chair of processing ease.

Accompanying drawing explanation

Fig. 1 is the stereogram representing the state that the backrest of the chair of embodiments of the invention 1 is erected, in explanation, illustrate frame part, and pan member, skin members omit.

Fig. 2 is the right side view of Fig. 1.

Fig. 3 is the front view of Fig. 1.

Fig. 4 is the top view of Fig. 1.

Fig. 5 is that the E-E of Fig. 4 cuts open side view.

Fig. 6 is the sectional view of the state that back frame has been toppled over from the state of Fig. 5.

Fig. 7 is the sectional view of the state that back frame has been toppled over further from the state of Fig. 6.

Fig. 8 is the F-F sectional view of Fig. 5.

Fig. 9 represents in embodiments of the invention 1, the figure of the backrest of chair and the relation of seat, and the side view schematic being the state of Fig. 5.

Figure 10 is the side view schematic of the state of Fig. 6 that backrest has been toppled over from the state of Fig. 9.

Figure 11 is the side view schematic of the state of Fig. 7 that backrest has been toppled over further from the state of Figure 10.

Figure 12 is the side view representing the state that the backrest of the chair of embodiments of the invention 2 is erected, in explanation, illustrate frame part, and pan member, skin members omit.

Figure 13 is the side view of the state that backrest has been toppled over from the state of Figure 12.

Figure 14 is the side view of the state that backrest has been toppled over further from the state of Figure 13.

Figure 15 is the side view representing the state that the backrest of the chair of embodiments of the invention 3 is erected, in explanation, illustrate frame part, and pan member, skin members omit.

Figure 16 is the side view of the state that backrest has been toppled over from the state of Figure 15.

Figure 17 is the side view of the state that backrest has been toppled over further from the state of Figure 16.

Figure 18 is the side view representing the state that the backrest of the chair of embodiments of the invention 4 is erected, in explanation, illustrate frame part, and pan member, skin members omit.

Figure 19 is the side view of the state that backrest has been toppled over from the state of Figure 18.

Figure 20 is the side view of the state that backrest has been toppled over further from the state of Figure 19.

Figure 21 is the side view representing the state that the backrest of the chair of embodiments of the invention 5 is erected, in explanation, illustrate frame part, and pan member, skin members omit.

Figure 22 is the side view of the state that backrest has been toppled over from the state of Figure 21.

Figure 23 is the side view of the state that backrest has been toppled over further from the state of Figure 22.

Figure 24 is the side view representing the state that the backrest of the chair of embodiments of the invention 6 is erected, in explanation, illustrate frame part, and pan member, skin members omit.

Figure 25 is the side view of the state that backrest has been toppled over from the state of Figure 24.

Figure 26 is the side view of the state that backrest has been toppled over further from the state of Figure 25.

Figure 27 is the side view representing the state that the backrest of the chair of embodiments of the invention 9 is erected, in explanation, illustrate frame part, and pan member, skin members omit.

Figure 28 is the side view of the state that backrest has been toppled over from the state of Figure 27.

Figure 29 is the side view of the state that backrest has been toppled over further from the state of Figure 28.

Detailed description of the invention

Based on illustrated embodiment, illustrate for implementing mode of the present invention.

Embodiment 1

Fig. 1 to Figure 11 represents embodiment 1.

As shown in Figure 1 to 4, the chair 1 of embodiments of the invention 1 has pedestal 2.On this pedestal 2, have with above-below direction (vertical) for rotating shaft, relative to the turntable 3 that this pedestal 2 can rotate.This turntable 3 is fixedly installed chair frame 4.Below, by the side of taking one's seat of chair 1, that is, with the back frame 8(backrest 28 of Fig. 5) opposition side as front A, using back frame 8 side as rear B, using the left side of Fig. 3 as left C, right side is illustrated as right D.

As shown in Figure 1 to 4, above-mentioned chair frame 4 have two side frame 4a, 4b and be set up in this two side frame 4a, 4b lower end between lower frame 4c, two side frame 4a, 4b and lower frame 4c form.In the lower central of above-mentioned lower frame 4c, be fixedly installed above-mentioned turntable 3, as shown in Figure 2, this turntable 3 is formed as, and more goes towards rear B from front A and tilts downwards.At the rear portion of this turntable 3, be provided with along the vertical direction the base portion 3a of the cylindrical shape that (vertical) erects.This base portion 3a can link rotatably relative to above-mentioned pedestal 2.

In the upper end of two side frame 4a, 4b, front and back (A-B) direction along chair 1 is fixedly installed the component forming ancon, is the elbow framework 5,5 of tabular in the present embodiment.

As shown in Fig. 5 ~ Fig. 7, at the upper back of above-mentioned two side frame 4a, 4b, be fixedly installed from its inner surface to inward side to along the outstanding bolster 7,7 of level (C-D direction).On this bolster 7, be provided with axle centered by this bolster 7, the back frame 8 that can rotate along front and back.

As shown in Figure 1, Figure 3, this back frame 8 has a pair side frame (side frame hereinafter referred to as back) 8a, 8b in left and right, in the present embodiment 1, by cylinder and the metal pipe of hollow form forms side frame 8a, the 8b at this back.Side frame 8a, the 8b at this two back are configured to, and it is axially orthogonal relative to left and right (C-D) direction of chair 1.In addition, at the axial pars intermedia of side frame 8a, the 8b at above-mentioned each back, inserted above-mentioned bolster 7,7, centered by this bolster 7,7, side frame 8a, the 8b at back can be arranged rotatably along front and back.Between the top of side frame 8a, the 8b at above-mentioned two backs, erection has connecting rod 8c.

As shown in Figure 1, seat frame frame 10 can be linked to the bottom of side frame 8a, the 8b at above-mentioned two backs rotatably along front and back (A-B) direction.This seat frame frame 10 has a pair side frame (side frame hereinafter referred to as seat) 10a, 10b in left and right, in the present embodiment 1, by cylinder and the metal pipe of hollow form forms this side frame 10a, 10b.This side frame 10a, 10b are configured to, and it is axially positioned at front and back (A-B) direction of chair 1.Frame 10c before a leading section structure of an essay of side frame 10a, 10b of above-mentioned two is provided with seat, is provided with an after-frame 10d at a rearward end structure of an essay of side frame 10a, 10b of two.As shown in Figure 1, in the both sides of this after-frame 10d, be provided with from seat after-frame 10d B direction is outstanding backward connecting piece 10e, 10e, the bottom of side frame 8a, the 8b at above-mentioned two backs, centered by the connection shaft 10f flatly arranged along left and right (C-D) direction, can be linked to this respective connecting piece 10e, 10e rotatably along front and back.

As shown in Fig. 1, Fig. 5 ~ Fig. 7, at the inner surface of two side frame 4a, 4b of above-mentioned chair frame 4, be provided with a guiding elements 11,11, as shown in Fig. 5 ~ Fig. 7, this guiding elements 11 is formed as A side more in the past and goes towards rear B direction and the bending declined more lentamente.On this guiding elements 11,11, being provided with can the directed component 12,12 of movement along this guiding elements 11,11.In the inner side of this directed component 12,12, the axial pars intermedia of side frame 10a, 10b of above-mentioned two is linked by the seat axle 12a flatly arranged along left and right (C-D) direction, centered by this axle 12a, side frame 10a, 10b of seat can be arranged rotatably along front and back.Thus, seat frame frame 10 can rotate centered by seat axle 12a, and can move forward and backward along guiding elements 11.

In the upper end of side frame 8a, the 8b at above-mentioned two backs, be respectively equipped with head guiding elements 14,14.This each head guiding elements 14,14 has tabular component 14a, 14a, one end (bottom) of the length direction of this tabular component 14a, 14a is fixedly installed on side frame 8a, the 8b at two backs, in the other end (upper end) of the length direction of above-mentioned tabular component 14a, 14a, be provided with pin 14b, 14b.As shown in Figure 3,4, this pin 14b is configured to, protruding outside from the outer surface of tabular component 14a (C-D) direction to the left and right.

At side frame 8a, the 8b at above-mentioned two backs, sliding frame 15, along the axis of side frame 8a, the 8b at back, can be arranged slidably.As shown in Fig. 1, Fig. 5 Fig. 7, above-mentioned sliding frame 15 configures with being positioned at the position of A side more forward than above-mentioned back frame 8.As shown in Figure 1, Figure 3, above-mentioned sliding frame 15 has right slip side frame 15a, the 15b in left and right 1 and coupling member 20.In the present embodiment 1, by cylinder and the metal pipe of hollow form forms above-mentioned slip side frame 15a, 15b.This slip side frame 15a, 15b are configured to, and it is axially almost parallel with side frame 8a, the 8b at above-mentioned back.

Be provided with connecting rod 17 at the rear side structure of an essay on the top of above-mentioned two slip side frame 15a, 15b, be provided with connecting rod 18 at a rear side structure of an essay for the bottom of two slip side frame 15a, 15b.In addition, as shown in Fig. 5 ~ Fig. 7, in the rear B side (back frame 8 side) of the upper and lower of right slip side frame 15a, coupling member 20,20 utilizes fixed component 20a to be fixed setting.In addition, as shown in Fig. 5 ~ Fig. 7, in the rear B side (back frame 8 side) of the upper and lower of left slip side frame 15b, coupling member 20,20 also utilizes fixed component 20a to be fixed setting.On the right side of this, coupling member 20,20 is relative to the side frame 8a at right back, can along it axially, that is, the matched in clearance axially slidably up and down of back frame 8.In addition, left side coupling member 20,20, can along its matched in clearance axially slidably also relative to the side frame 8b at left back, and sliding frame 15, along the axis of side frame 8a, the 8b at above-mentioned two backs, can be arranged slidably.That is, sliding frame 15 can move along the axis of side frame 8a, the 8b at back.

As above-mentioned coupling member 20, as long as the material that can be shaped by solid shapes such as plastics, metal, timber, arbitrary material can be used, in the present embodiment, employ polyacetals (POM).

As shown in Fig. 5 ~ Fig. 8, in the rear B side of above-mentioned coupling member 20, be fixedly installed back back panel 21, sliding frame 15 and back back panel 21 are as one, and the axis along side frame 8a, the 8b at back can move.

Above-mentioned back back panel 21 is made up of back plate 21a and biside plate 21b, 21b of the both sides being located at this back plate 21a.Its right plate 21b is located between right slip side frame 15a and the right frame 4a of chair frame 4, and left plate 21b is located between left slip side frame 15b and the left frame 4b of chair frame 4.At above-mentioned biside plate 21b, 21b, the elongated hole 21c running through its table back of the body is formed, and its length direction becomes the axis of side frame 8a, the 8b at back, and running through in above-mentioned elongated hole 21c has above-mentioned bolster 7.

As shown in Fig. 5 ~ Fig. 7, in the upper end of above-mentioned two slip side frame 15a, 15b, be provided with head frame 22.This head frame 22 has a pair head cam 22a, 22a in left and right, by be located at the bottom of above-mentioned a pair head cam 22a, 22a, the upper end that can be linked to above-mentioned slip side frame 15a, 15b along head axle 22b, 22b of left and right (C-D) direction level rotatably, head frame 22 can be arranged rotationally along front and back.This head cam 22a is formed as tabular, is at least formed with the guiding groove 23 of surface opening within it within it.This guiding groove 23 both can be formed by the through hole of the lateral surface extending through head cam 22a, also can be formed by the kerve that has of the not opening of the lateral surface at head cam 22a.At the rear portion of above-mentioned head cam 22a, be provided with head back panel 25.

Above-mentioned guiding groove 23 is in the present embodiment 1, as shown in Fig. 5 ~ Fig. 7, more to go upward from the bottom of head cam 22a and B rolls the 1st oblique guiding groove 23a, is formed in the arc groove 23b on the top of the 1st guiding groove 23a and the top at this arc groove 23b in arc-shaped more backward, more to go upward from the below of head cam 22a and A rolls the 2nd oblique guiding groove 23c and is formed as continuous print " く " shape more forward.

In above-mentioned guiding groove 23, the pin 14b of above-mentioned back frame 8 can matched in clearance movably along guiding groove 23.

In the bottom of above-mentioned two slip side frame 15a, 15b, as shown in Fig. 1, Fig. 5 ~ Fig. 7, one end (bottom) of connecting rod 27 utilizes the rotating shaft 27a flatly arranged along left and right (C-D) direction, and centered by this rotating shaft 27a, front and back can link rotatably.The other end (upper end) of above-mentioned connecting rod 27, utilizes the rotating shaft 27b flatly arranged along left and right (C-D) direction, and centered by this rotating shaft 27b, front and back can be linked to the inner surface of B side behind the top of two side frame 4a, 4b of chair frame 4 rotatably.The other end sidespin rotating shaft 27b of connecting rod 27 as shown in Figure 5, Figure 9, under the state that back frame 8 erects, is configured to be positioned at the position than the end side rotating shaft 27a top of A on the front.

Above-mentioned connecting rod 27 is formed as tabular, and is configured to, and its side view is formed as arc, and the central side of this arc is positioned at front side A.In addition, the side view of above-mentioned connecting rod 27 also can be formed as the arbitrary shapes such as linearity except arc as described above.

Between above-mentioned two slip side frame 15a, 15b and between two head cam 22a, 22a, be provided with the 1st stretch fabric (fabricspring; Cloth バ ネ) (not shown), its both sides, by force application part (not shown), are installed in slip side frame 15a, 15b and head cam 22a, 22a.The upper end of the 1st stretch fabric is fixed in the connecting rod (not shown) between the upper end being located at above-mentioned head cam 22a, 22a, and the lower end of the 1st stretch fabric is fixed in the lower connecting rod 18 of sliding frame 15.The both sides of above-mentioned 1st stretch fabric, utilize above-mentioned force application part, to slip side frame 15a(15b) direction is biased.As this force application part, employ spring in the present embodiment.

Be located at the front surface of above-mentioned the 1st stretch fabric between slip side frame 15a, 15b, back polyurethane member utilizes bonding agent etc. to be fixed setting, be located at the front surface of the 1st stretch fabric between head cam 22a, 22a, head polyurethane member utilizes bonding agent etc. to be fixed setting.

1st skin members (not shown) is arranged in the mode of the peripheral part entirety covering above-mentioned sliding frame 15, back frame 8, the 1st stretch fabric, back polyurethane member, head polyurethane member, back back panel 21 and head back panel 25.1st skin members both can be fixed on sliding frame 15, back frame 8, the 1st stretch fabric, back polyurethane member, head polyurethane member, back back panel 21, any one in head back panel 25, also sliding frame 15, back frame 8, the 1st stretch fabric, back polyurethane member, head polyurethane member, back back panel 21 can not be fixed on, any one in head back panel 25.

By being located at above-mentioned the 1st stretch fabric between slip side frame 15a, 15b and back polyurethane member forms back pan member, but as this back pan member, except stretch fabric, polyurethane member, also can use arbitrary pan member.In addition, by sliding frame 15, back frame 8, back pan member, back back panel 21 and the 1st skin members, backrest 28 is formed.

By being located at above-mentioned the 1st stretch fabric between head cam 22a, 22a and head polyurethane member forms head pan member, but as this head pan member, except stretch fabric, polyurethane member, also can use arbitrary pan member.In addition, by head frame 22, head pan member, head back panel 25 and the 1st skin members, headrest 30 is formed.

In addition, present framework 10 is provided with the 2nd stretch fabric (not shown), and its both sides are fixed in side frame 10a, 10b of seat respectively, and the front end of the 2nd stretch fabric is fixed in frame 10c before seat.In addition, the rearward end of the 2nd stretch fabric is fixed in an after-frame 10d by force application part (not shown), and the rearward end of above-mentioned 2nd stretch fabric utilizes above-mentioned force application part to be biased to the rear direction of seat frame frame 10.As this force application part, employ spring in the present embodiment.

On the top of above-mentioned 2nd stretch fabric, seat polyurethane member utilizes bonding agent etc. to be fixed setting.Form seat pan member by the 2nd stretch fabric and seat polyurethane member, but as seat pan member, except stretch fabric, polyurethane, also can use arbitrary pan member.

2nd skin members (not shown) is arranged in the mode of the peripheral part entirety covering above-mentioned seat frame frame 10 and seat pan member.2nd skin members both can be fixed on any one in seat frame frame 10, the 2nd stretch fabric, seat polyurethane, also can not be fixed on any one in seat frame frame 10, the 2nd stretch fabric, seat polyurethane.By above-mentioned seat frame frame 10, seat pan member and the 2nd skin members, form seat 29.

Then, the action of chair 1 is described.

As shown in Figure 5, Figure 9, back frame 8(backrest 28 from chair 1) state that erects, when by back frame 8, centered by bolster 7, rearward B topples over gradually, as shown in Fig. 6, Figure 10, connecting rod 27 is centered by the rotating shaft 27b of chair frame 4 side, this sliding frame 15 side direction front is rotated, and is linked to sliding frame 15 side frame 8a, 8b along back of rotating shaft 27a, mobile to lower side to (seat 29 direction).Thus, back pan member and the 1st skin members of being located at sliding frame 15 also move to seat 29 direction gradually.That is, sliding frame 15 relative to the position of back frame 8 according to axial (axis of side frame 8a, the 8b at back) inclination angle beta with respect to the horizontal plane and changing up and down of above-mentioned back frame 8.

In addition, seat frame frame 10 is little by little toppled over along with back frame 8, by the bottom of back frame 8 forwards A press, along seat guiding elements 11, anteriorly top is mobile gradually.

In addition, because head frame 22 can be linked to the upper end of sliding frame 15 rotationally, so as shown in Fig. 6, Figure 10, head frame 22 is together with sliding frame 15, mobile to downside (seat 29 direction).Now, head guiding elements 14 is relative to head cam 22a(guiding groove 23) (with direction, seat 29 opposition side) movement relatively upward.That is, sell in 14b the 1st guiding groove 23a that more rearward B tilts more going from bottom towards top and move gradually upward.Thus, the axle (axle of the above-below direction of back frame 8) of side frame 8a, the 8b at back and head frame 22(head cam 22a) the angle [alpha] of front surface become large gradually, headrest 30(head frame 22) relative to backrest 28(back frame 8) rise gradually.

Further, when pin 14b is positioned at arc groove 23b central, head frame 22(head cam 22a) front surface, become maximum (setting) relative to the angle [alpha] of the axle (axle of side frame 8a, the 8b at back) of the above-below direction of back frame 8.

As shown in Fig. 7, Figure 11, when making back frame 8 topple over gradually further, by the rotation of connecting rod 27, sliding frame 15 moves to downside (seat 29) direction further, and sell 14b head cam 22a, more go from bottom towards top and more forwards A tilt the 2nd guiding groove 23c in move gradually upward.Thus, the angle [alpha] of the axle of side frame 8a, the 8b at back and the front surface of head cam 22a diminishes gradually, and head frame 22(rests the head on 30) relative to back frame 8(backrest 28) rearward topple over gradually.

In addition, with above-mentioned action on the contrary, as shown in Fig. 7, Figure 11, backrest 28(back frame 8 from chair 1) state of toppling over, when back frame 8 is risen gradually, by the rotation in the direction contrary to the above of connecting rod 27, sliding frame 15 upwards moves to (with direction, seat 29 opposition side) side along side frame 8a, the 8b at back.Thereupon, back frame 8 is more made to rise, head frame 22 more little by little rises relative to back frame 8, head frame 22 front surface, become setting relative to the angle [alpha] of the axle of the above-below direction of back frame 8 after, when making back frame 8 rise further, back frame 8 more rises, and head frame 22 is more rearward toppled over relative to back frame 8, becomes the state shown in Fig. 5, Fig. 9.

Namely, back frame 8 is from the state erected as shown in Figure 5, until the front surface of head frame 22, become maximum relative to the angle [alpha] of the axle of the above-below direction of back frame 8, back frame 8 is more made to topple over, head frame 22 more rises relative to back frame 8, more make back frame 8 rise, head frame 22 is more toppled over relative to back frame 8.

In addition, back frame 8 becomes the state of maximum until the state of back frame 8 lodging shown in Fig. 7 from above-mentioned angle [alpha], and more make back frame 8 topple over, head frame 22 is more toppled over relative to back frame 8, more make back frame 8 rise, head frame 22 more rises relative to back frame 8.

According to above structure, the chair 1 of embodiments of the invention 1 plays effect as following, effect.

For the present invention, more make back frame 8(backrest 28) topple over, sliding frame 15, the back pan member being located at sliding frame, back back panel 21 more move to seat 29 direction together with the 1st skin members, more make back frame 8(backrest 28) rise, sliding frame 15, back pan member more move to direction, seat 29 opposition side together with the 1st skin members.Thus, the lodging state of the backrest 28 shown in the raised state of the backrest 28 shown in Fig. 9 and Figure 11 backrest 28 rise in reverse motion, as shown in Fig. 9 ~ Figure 11, the variable quantity of the distance of the seat upper surface rear portion 29a of the 29 and front surface bottom 28a of backrest 28, by linking with rising of backrest 28, with back pan member relative to back frame 8 not movement chair compared with, considerably less.

Thus, user is on the chair 1 being seated at the state making backrest 28 rise, and under the state resting against backrest 28, backrest 28 no matter is made to topple over or rise, all can prevent the clothes worn from having been dragged upward by backrest 28 and having moved, even if when making 28, backrest fall, also without the need to arranging the clothes of dress or again taking a seat, can cosily use chair 1.

In addition, when making 28, backrest fall, the skin friction etc. of user and backrest 28 can be reduced, the wearing and tearing of the epidermis of backrest 28 can be reduced.

In addition, back frame 8 is toppled over gradually from the state erected, until the front surface of head frame 22, become setting relative to the angle [alpha] of the axle of the above-below direction of back frame 8, more make back frame 8(backrest 28) topple over gradually, head frame 22(rests the head on 30) relative to back frame 8(backrest 28) rise more gradually, thus when seated person makes the backrest 28 of chair 1 watch the TV etc. in front with toppling over a little, risen relative to backrest 28 by headrest compared with the state shown in Fig. 5, Fig. 9 30, easily the sight line of seated person is remained on front.

In addition, head frame 22 front surface, become setting relative to the angle [alpha] of the axle of the above-below direction of back frame 8 after, more make back frame 8(backrest 28) topple over, head frame 22(rests the head on 30) relative to back frame 8(backrest 28) more little by little topple over, thus when seated person makes the backrest 28 of chair 1 topple over significantly and obtains sleeping position etc., the neck of seated person can not be tired, can obtain posture easily.

In addition, connecting rod 27 is arranged to, other end sidespin rotating shaft 27b as shown in Figure 5, Figure 9, under the state that back frame 8 erects, be positioned at the top than end side rotating shaft 27a A on the front, if but utilize connecting rod 27, back frame 8 can be more made rearward to topple over, sliding frame 15 is more mobile to lower side to (seat 29 direction), back frame 8 is more made forwards to rise, sliding frame 15 more upwards side is mobile to (with direction, seat 29 opposition side), and shape, the connecting rod 27 of connecting rod 27 can at random set with the position relationship of other components.

Embodiment 2

Figure 12 to Figure 14 represents embodiment 2.

The present embodiment 2 is identically with above-described embodiment 1, in axle (axle of side frame 8a, the 8b at the back) inclination angle beta with respect to the horizontal plane of the above-below direction according to above-mentioned back frame 8, make sliding frame 15 along in the structure moved axially of side frame 8a, the 8b at back, according to the inclination angle beta of above-mentioned back frame 8, the embodiment that method that make the front surface of head frame 22, that change relative to the angle [alpha] of the axle of side frame 8a, the 8b at above-mentioned back is different from above-described embodiment 1.

In the present embodiment 2, as shown in Figure 12 ~ Figure 14, by head frame 35 centered by the head axle 35c flatly arranged along left and right (C-D) direction, the upper end of slip side frame 15a, 15b can be located at rotatably along front and back.The rear B side of above-mentioned head frame 35, as shown in Figure 12 ~ Figure 14, will from its bottom to central portion, be formed as going more upward and B rolls the 1st oblique taper surface 35a more backward, by the upper end from the upper end of the 1st taper surface 35a to head frame 35, be formed as going more upward and A rolls the 2nd oblique taper surface 35b more forward.

As shown in figure 12, back frame 8 has side frame 8a, the 8a at 1 pair of back in left and right, under the state that back frame 8 erects, the upper end of side frame 8a, the 8a at above-mentioned back is positioned at the rear portion, bottom of above-mentioned 1st taper surface 35a, so textural, different from the back frame 8 of above-described embodiment 1, but other structure is identical with the back frame 8 of above-described embodiment 1.

Link one end (upper end) of connecting rod 37 centered by the rotating shaft 37a flatly arranged along left and right (C-D) direction, the central part of above-mentioned head frame 35 can be linked to rotatably along front and back, the other end (lower end) linking connecting rod 37, centered by the rotating shaft 37b flatly arranged along left and right (C-D) direction, can be linked to the upper end of side frame 8a, the 8a at above-mentioned back rotatably along front and back.As shown in figure 12, above-mentioned link connecting rod 37 is configured to, and under the state that back frame 8 erects, end side rotating shaft 37a is positioned at than other end sidespin rotating shaft 37b on the front and the position of top.

Because other structure, structure are identical with above-described embodiment 1, the description thereof will be omitted.

Then, the action of the chair 1 of this 2nd embodiment is described.

Identically with above-described embodiment 1, making back frame 8 from the state erected as shown in figure 12, centered by bolster 7, when rearward toppling over gradually, utilize connecting rod 27, as shown in Figure 13, Figure 14, sliding frame 15, along side frame 8a, the 8a at back, moves to downside (seat 29) direction.In addition, when making back frame 8 rise gradually from the state lodged as shown in figure 14, sliding frame 15, along side frame 8a, the 8a at back, moves to upside (with opposition side, seat 29 direction) direction.

In addition, back frame 8 is toppled over gradually from the raised state shown in Figure 12, and as shown in figure 13, when sliding frame 15 is moved to downside (seat 29) direction gradually relative to back frame 8, link connecting rod 37 centered by rotating shaft 37b, before its upper lateral, A side rotates.Thus, be linked to the head frame 35 of the rotating shaft 37a linking connecting rod 37, centered by head axle 35c, its top forward A side is rotated.Rotated centered by rotating shaft 37b by this link connecting rod 37, become large gradually from the hang down distance L1 of vertical line of axle of side frame 8a at back of the rotating shaft 37a of head frame 35.

Thus, when back frame 8 is rearward toppled over gradually from the state erected as shown in figure 12, head frame 35 rises gradually relative to back frame 8.That is, head frame 35 front surface, become large gradually relative to the angle [alpha] of the axle of the above-below direction of back frame 8.

Further, when making back frame 8 be poured into the position of regulation, become maximum from linking the hang down distance L1 of vertical line of axle of side frame 8a at back of the rotating shaft 37a of connecting rod 37, above-mentioned angle [alpha] also becomes maximum (setting).

Afterwards, when making back frame 8 rearward topple over further, sliding frame 15 moves to downside (seat 29) direction further relative to back frame 8, links connecting rod 37 and rotates downwards centered by rotating shaft 37b further, above-mentioned distance L1 diminishes gradually, and above-mentioned angle [alpha] also diminishes gradually.Thus, head frame 35 is rearward toppled over gradually relative to back frame 8, becomes the state shown in Figure 14.

In addition, with above-mentioned action on the contrary, when back frame 8 is risen gradually from the state lodged as shown in figure 14, back frame 8 more rises, and head frame 35 rises more gradually relative to back frame 8, after above-mentioned angle [alpha] becomes maximum (setting), when back frame 8 is risen further, back frame 8 more rises, and head frame 35 is more rearward toppled over relative to back frame 8, becomes the state shown in Figure 12.

Like this, in the present embodiment 2, also identically with above-described embodiment 1, according to the relative position change axial up and down of back frame 8 and sliding frame 15, the front surface of head frame 35, change relative to the angle [alpha] of the axle (axle of the side frame 8a at back) of the above-below direction of back frame 8.

Also the effect same with above-described embodiment 1, effect can be played in the present embodiment 2.

Embodiment 3

Figure 15 to Figure 17 represents embodiment 3.

The present embodiment 3 is and above-described embodiment 1,2 identical, in the axle inclination angle beta with respect to the horizontal plane of the above-below direction according to above-mentioned back frame 8, make sliding frame 15 along in the structure moved axially of side frame 8a, the 8b at back, according to the inclination angle beta of above-mentioned back frame 8, method that make the front surface of head frame 45, that change relative to the angle [alpha] of the axle of side frame 8a, the 8b at above-mentioned back and above-described embodiment 1,2 different embodiments.

In the present embodiment 3, the fixing head component 42 being fixedly installed on the upper end of slip side frame 15a is formed as tabular, and fixing head component 42 is formed the curved guide groove 43 running through its table back of the body.This curved guide groove 43 is formed as the outer openings of at least fixing head component 42, and curved guide groove 43 both can be formed by the through hole running through its table back of the body, also can be formed by the kerve that has of the not opening of the inner side at fixing head component 42.This curved guide groove 43 as seen in figs. 15-17, more to go from the bottom of fixing head component 42 towards top and A rolls the 1st oblique guiding groove 43a and the top at the 1st guiding groove 43a more forward, more to go from the downside of fixing head component 42 towards upside and B rolls the 2nd oblique guiding groove 43b and is formed as continuous print " く " shape deviously more backward.

Head frame 45 has a pair head cam 45a, 45a in left and right, this each head cam 45a, centered by the head axle 45d flatly arranged along left and right (C-D) direction, can be located at the lower outside of above-mentioned each fixing head component 42 rotatably along front and back.At the medial surface of each head cam 45a, the bottom of head cam 45a is located in one end (lower end) of its length direction of elongated hole-shape guiding groove 45b, the other end (upper end) is located near the central upper of head cam 45a, is formed as going towards top more from below and more towards the linearity that rear B side goes.

In addition, under the state that back frame 8 as shown in Figure 15 erects, above-mentioned elongated hole-shape guiding groove 45b is arranged to obliquely, and its length direction is relative to the axis of side frame 8a, the 8b at above-mentioned back, and the upper end more by elongated hole-shape guiding groove 45b is located front.

As shown in Figure 15 ~ Figure 17, guiding elements 46 runs through both sides in above-mentioned elongated hole-shape guiding groove 45b and curved guide groove 43 and matched in clearance, and this guiding elements 46 can be located in elongated hole-shape guiding groove 45b and curved guide groove 43 movably.In the present embodiment, by above-mentioned guiding elements 46 with guiding groove 45b, 43 engaging portion be formed as pin shape.

Because this elongated hole-shape guiding groove 45b is different as described above from the shape of curved guide groove 43, so guiding elements 46 moves along the vertical direction in curved guide groove 43 and elongated hole-shape guiding groove 45b, the change in location of above-mentioned guiding elements 46, thus the front surface of head frame 45, change relative to the angle [alpha] of the axle of side frame 8a, the 8b at above-mentioned back.In addition, guiding elements 46 is in the 2nd guiding groove 43b and elongated hole-shape guiding groove 45b, more move downwards gradually from the position of its top, head frame 45 rises more gradually relative to back frame 8, namely head frame 45 front surface, become large more gradually relative to the angle [alpha] of the axle of the above-below direction of back frame 8.In addition, after this angle [alpha] reaches maximum (setting), guiding elements 46 is in the 1st guiding groove 43a and elongated hole-shape guiding groove 45b, and move downwards, head frame 45 is toppled over more gradually relative to back frame 8, that is, above-mentioned angle [alpha] diminishes more gradually.

On the top of above-mentioned each head cam 45a, be provided with from its medial surface to inward side to outstanding pin 45c.As shown in Figure 15 ~ Figure 17, this pin 45c is positioned at the front face side than above-mentioned elongated hole-shape guiding groove 45b something or somebody to fall back on portion cam 45, and with seat 29 opposition side.

As shown in Figure 15 ~ Figure 17,1st mobile member 48 is configured to, its one end is being fixed relative to bolster 7, intermediate portion can be hooked in slidably sliding frame 15 side of connecting rod 27 and the outside of rotating shaft 27a turning back, and under the state other end being fixed on guiding elements 46, do not relax between bolster 7 and guiding elements 46, metal silk thread, plastic rope etc. that the 1st mobile member 48 can bend by rope form and at arbitrary position are formed, and guiding elements 46 is moved.In the present embodiment, as the 1st mobile member 48, metal silk thread is employed.

In addition, as shown in Figure 15 ~ Figure 17,2nd mobile member 49 is configured to, its one end is being fixed relative to bolster 7, intermediate portion can be hooked in slidably the outside of the pin 45c of head cam 45a and turn back, and by under state fixing relative to guiding elements 46 for the other end, not relaxing between bolster 7 and guiding elements 46, metal silk thread, plastic rope etc. that 2nd mobile member 49 can bend by rope form and at arbitrary position are formed, and guiding elements 46 is moved.In the present embodiment, as the 2nd mobile member 49, metal silk thread is employed.

Because other structure, structure are identical with above-described embodiment 1, the description thereof will be omitted.

Then, the action of the chair 1 of this 3rd embodiment is described.

With above-described embodiment 1,2 identical, when making back frame 8 rearward topple over gradually from the state erected as shown in figure 15, sliding frame 15 along side frame 8a, the 8b at back on the downside of seat 29() direction moves.In addition, when making back frame 8 rise gradually from the state lodged as shown in figure 17, sliding frame 15, along side frame 8a, the 8b at back, moves to seat 29 opposition side (upside) direction.

As mentioned above, rearward topple over gradually from the state erected as shown in figure 15 along with making back frame 8, when sliding frame 15 moves to downside (seat 29) direction gradually relative to back frame 8, as shown in figure 16, distance between the rotating shaft 27a of slip side frame 15a and bolster 7 expands gradually, 1st mobile member 48 by downside (seat 29) direction pull, guiding elements 46 in the 2nd guiding groove 43b and elongated hole-shape guiding groove 45b to lower side to moving gradually.Meanwhile, head frame 45 also together with sliding frame 15 to lower side to movement, the 2nd mobile member 49, bolster 7 and pin 45c between distance shorten, thus, guiding elements 46 can to lower side to movement in guiding groove 43b, 45b.

Along with the movement of above-mentioned guiding elements 46, head frame 45 rises gradually relative to back frame 8, that is, head frame 45 front surface, become large gradually relative to the angle [alpha] of the axle of side frame 8a, the 8b at above-mentioned back.Further, when guiding elements 46 is positioned at the lower end of the 2nd guiding groove 43b, above-mentioned angle [alpha] reaches maximum (setting).

Then, when making back frame 8 topple over gradually further, by guiding elements 46 in the 1st guiding groove 43a and elongated hole-shape guiding groove 45b to lower side to moving gradually, head frame 45 is rearward toppled over gradually relative to back frame 8, namely, above-mentioned angle [alpha] diminishes gradually, and as shown in figure 17, back frame 8 becomes the state of lodging.

In addition, with above-mentioned action on the contrary, when making back frame 8 rise gradually from the state lodged as shown in figure 17, guiding elements 46 utilizes mobile member 49 to be moved upward from below gradually in guiding groove 43b, 45b, and back frame 8 more rises, and head frame 45 rises more gradually relative to back frame 8, after above-mentioned angle [alpha] becomes setting, when making back frame 8 rise further, back frame 8 more rises, and head frame 45 is toppled over more gradually relative to back frame 8.

Like this, in the present embodiment 3 also with above-described embodiment 1,2 identical, changed by back frame 8 relative position axial up and down with sliding frame 15, the front surface of head frame 45, change relative to the angle [alpha] of the axle (axle of side frame 8a, the 8b at back) of the above-below direction of back frame 8.In addition, identically with above-described embodiment 1, by the guiding groove 43 of guiding elements 46, the change in location of 45b, head frame 45 front surface, change relative to the angle [alpha] of the axle of the above-below direction of above-mentioned back frame 8.

Also can play in the present embodiment 3 and above-described embodiment 1,2 same effects, effect.

In addition, in the present embodiment 3, rising according to back frame 8, utilize mobile member 48,49, guiding elements 46 moves in guiding groove 43,45b, but, as long as this mobile member 48,49 is rising according to back frame, makes guiding elements 46 move to the component of the position of the regulation in guiding groove 43,45b, just can use arbitrary component, such as, also the one of mobile member 48,49 can be replaced into the force application parts such as helical spring.

Embodiment 4

Figure 18 to Figure 20 represents an example of embodiment 4.

In above-described embodiment 1 to 3, relative to sliding frame 15, back pan member is installed, back pan member is moved together with sliding frame 15, but in the present embodiment 4, back pan member is located at back frame 8, although along with back frame 8 rise fall, back pan member does not move relative to back frame 8, but identically with above-described embodiment 1 to 3, according to the inclination angle beta of back frame 8, make the front surface of head frame, change relative to the angle [alpha] of the axle of the side frame at above-mentioned back.

In above-described embodiment 1 to 3, head frame 22,35,45 can be provided with rotatably along front and back in the upper end of sliding frame 15, but in the present embodiment 4, in the upper end of back frame, centered by the head axle flatly arranged along left and right (C-D) direction, can be provided with head frame rotatably along front and back, this point is different.But, in the present embodiment 4 also identically with above-described embodiment 1 to 3, changed by the relative position of sliding frame relative to back frame, the front surface of head frame, change relative to the angle [alpha] of the axle (axle of the side frame at back) of back frame above-below direction, identically with above-described embodiment 1 to 3, rearward topple over gradually from raised state along with making back frame, head frame rises gradually relative to back frame, after above-mentioned angle [alpha] becomes the angle of regulation, when making back frame topple over further, rearward topple over gradually along with making back frame, head frame is rearward toppled over gradually relative to back frame.

Figure 18 ~ Figure 20 represents example embodiment 4 being applied to above-described embodiment 1, based on Figure 18 ~ Figure 20, the present embodiment 4 is described.

As shown in Figure 18 ~ Figure 20, on the top of back frame 8, centered by the head axle 51b flatly arranged along left and right (C-D) direction, head frame 51 can be provided with rotatably along front and back.This head frame 51 has a pair head cam 51a, 51a in left and right, at the inner surface of this each head cam 51a, be only provided with the guiding groove 52 of opening to the inside.This guiding groove 52 is as shown in Figure 18 ~ Figure 20, more go from the bottom of head cam 51a towards top that B more backward rolls the 1st oblique guiding groove 52a, arc-shaped is formed in the arc groove 52b on the top of the 1st guiding groove 52a and the top at this arc groove 52b, from the bottom of head cam 51a, linearly the 2nd guiding groove 52c being located at top forms continuous print " く " shape.In addition, as shown in figure 18, under the state that back frame 8 erects, it is, relative to the axis of side frame 8a, the 8b at back, be positioned at front on the upside of it that the length direction of the 2nd guiding groove 52c tilts.

Be fixedly installed back pan member in above-mentioned back frame 8, skin members and above-described embodiment 1 are uniformly set.

Sliding frame 53 is provided with at the rear portion of above-mentioned back frame 8.Before the upper and lower of the slip side frame of the left and right of this sliding frame 53 A side (back frame 8 side), as shown in Figure 18 ~ Figure 20, the coupling member 20,20 same with above-described embodiment 1 to 3 utilizes fixed component to be fixed and arranges.In addition, coupling member 20 along back frame 8 up and down axially can matched in clearance slidably, identically with above-described embodiment 1 to 3, the axis along back frame 8 can be arranged sliding frame 53 slidably.

Above-mentioned sliding frame 53 has pair of sliding side frame 53a, 53a in left and right, in the bottom of this two slips side frame 53a, 53a, as shown in Figure 18 ~ Figure 20, one end (bottom) of connecting rod 54, centered by the rotating shaft 54a flatly arranged along left and right (C-D) direction, can link rotatably along front and back.The other end (upper end) of above-mentioned connecting rod 54, centered by the rotating shaft 54b flatly arranged along left and right (C-D) direction, can be linked to the inner surface of B side behind the top of two side frame 4a, 4b of chair frame 4 rotatably along front and back.Be configured to the rotating shaft 54b of above-mentioned chair frame 4, be positioned at than the rotating shaft 54a with above-mentioned sliding frame 53 by front upper.

From the bottom of above-mentioned slip side frame 53a, 53a until pars intermedia, as shown in Figure 18 ~ Figure 20, formed substantially in parallel with side frame 8a, the 8b at back, the upper bend of slip side frame 53a, 53a is formed as, go more upward and be located front, being formed obliquely relative to back frame 8.In addition, above-mentioned slip side frame 53a, 53a upper-end part of driving in side frame 8a, the 8b than back axle extended line on the front.

Thus, when back frame 8 is rearward toppled over centered by bolster 7, utilize connecting rod 54, sliding frame 53 is on the downside of seat 29() direction moves, and when back frame 8 is risen, sliding frame 53 moves to seat 29 opposition side (upside) direction.

In the upper end of above-mentioned two slip side frame 53a, 53a, guiding elements 55 being fixedly installed from the outer surface of slip side frame 53a, 53a towards left and right (C-D) direction, this guiding elements 55 can matched in clearance movably in above-mentioned guiding groove 52 protruding outsidely.Guiding elements 55, as shown in Figure 18 ~ Figure 20, is positioned at the axle extended line A on the front of side frame 8a, the 8b than back.In the present embodiment, pin is employed as above-mentioned guiding elements 55.

Because other structure, structure are identical with above-described embodiment 1, the description thereof will be omitted.

Then, the action of the chair 1 of this 4th embodiment is described.

Identically with above-described embodiment 1 to 3, when the back frame 8 of chair 1 is rearward toppled over gradually from the state erected as shown in figure 18, sliding frame 53 as shown in Figure 19, Figure 20, along side frame 8a, the 8b at back on the downside of seat 29() direction moves.In addition, when making back frame 8 rise gradually from the state lodged as shown in figure 20, sliding frame 53, along side frame 8a, the 8b at back, moves to seat 29 opposition side (upside) direction.

Back frame 8 is rearward toppled over gradually from the state erected as shown in figure 18, when sliding frame 53 moves to downside (seat 29) direction gradually relative to back frame 8, as shown in Figure 18 ~ Figure 20, guiding elements 55 moves abreast with the axle of side frame 8a, the 8b at back.Now, guiding elements 55 is positioned at side frame 8a, 8b A on the front than back, 2nd guiding groove 52c tilts relative to the axle of side frame 8a, the 8b at back, thus guiding elements 55 is when in the 2nd guiding groove 52c, (seat 29 direction) is mobile gradually downwards, the front surface of head frame 51, become large gradually relative to the angle [alpha] of the axle of side frame 8a, the 8b at above-mentioned back, head frame 51 rises gradually relative to back frame 8.

Further, when guiding elements 55 is positioned at arc groove 52b central, the front surface of head frame 51, become maximum (setting) relative to the angle [alpha] of the axle of the above-below direction of back frame 8.

When making back frame 8 rearward topple over gradually further, moved gradually downward more going A more forward to roll in the 1st oblique guiding groove 52a from upside towards downside by guiding elements 55, above-mentioned angle [alpha] diminishes gradually, head frame 51 is toppled over gradually relative to back frame 8, as shown in figure 20, the state that back frame 8 lodges is become.

In addition, with above-mentioned action on the contrary, when making back frame 8 rise gradually from the state lodged as shown in figure 20, back frame 8 more rises, head frame 51 rises more gradually relative to back frame 8, after above-mentioned angle [alpha] becomes setting, when making back frame 8 rise further, back frame 8 more rises, and head frame 51 is toppled over more gradually relative to back frame 8.

, changed by back frame 8 relative position axial up and down with sliding frame 53 like this, in the present embodiment 4 also identically with above-described embodiment 1 to 3, the front surface of head frame 51, change relative to the angle [alpha] of the axle of the above-below direction of back frame 8.In addition, with above-described embodiment 1,3 identical, by the change in location of the guiding groove 52 of guiding elements 55, the front surface of head frame 51, change relative to the angle [alpha] of the axle of the above-below direction of above-mentioned back frame 8.

In the present embodiment 4, about the action of head frame 51, also the effect same with above-described embodiment 1 to 3, effect can be played.

Embodiment 5

Figure 21 to Figure 23 represents an example of embodiment 5.

In above-described embodiment 1 to 4, linked slip side frame 15a(15b with 1 connecting rod 27,54), the bottom of 53a and two side frame 4a(4b of chair frame 4), but in the present embodiment 5, link slip side frame 15a(15b with the connecting rod 61 be made up of many connecting rods), the axial pars intermedia of 53a and two side frame 4a(4b of chair frame 4), back frame 8 is more rearward toppled over, sliding frame 15 more moves to seat 29 direction, back frame 8 is more risen, and sliding frame 15 more moves to direction, seat 29 opposition side.

Figure 21 ~ Figure 23 represents example embodiment 5 being applied to above-described embodiment 1, is described based on Figure 21 ~ Figure 23.

The axial pars intermedia of slip side frame 15a, 15b and two side frame 4a, 4b of chair frame 4 are linked with connecting rod 61.This connecting rod 61, as shown in Figure 21 ~ Figure 23, is made up of these 3 connecting rods of the 1st connecting rod 62, the 2nd connecting rod 63 and the 3rd connecting rod 64.One end (upper end) of above-mentioned 1st connecting rod 62 is centered by the rotating shaft 62a flatly arranged along left and right (C-D) direction, the pars intermedia of the axis of slip side frame 15a, 15b can be linked to rotatably along front and back, the other end (lower end) of the 1st connecting rod 62, centered by the rotating shaft 62b flatly arranged along left and right (C-D) direction, can be linked to one end (upper end) of the 2nd connecting rod 63 rotatably along front and back.

The pars intermedia of the axis of the 2nd connecting rod 63 centered by the connection shaft 63a flatly arranged along left and right (C-D) direction, can be linked to side frame 8a, the 8b at back near other end sidepiece rotatably along front and back.This connection shaft 63a is configured to, near the rear portion being positioned at bolster 7.The other end (lower end) of above-mentioned 2nd connecting rod 63, centered by the rotating shaft 63b flatly arranged along left and right (C-D) direction, can be linked to one end (rear end) of the 3rd connecting rod 64 rotatably along front and back.The other end (front end) of the 3rd connecting rod 64, centered by the rotating shaft 64a flatly arranged along left and right (C-D) direction, can be linked to the rear upper of two side frame 4a, 4b of chair frame 4 rotatably along front and back (A-B) direction.

Because other structure, structure are identical with above-described embodiment 1, the description thereof will be omitted.

Then, the action of the chair 1 of this 5th embodiment is described.

Identically with above-described embodiment 1 to 4, when back frame 8 is rearward toppled over centered by bolster 7 gradually from the state erected as shown in figure 21,2nd connecting rod 63 is as shown in Figure 21,22, and centered by the connection shaft 63a near bolster 7, its 3rd connecting rod 64 side direction upper back rotates.In addition, by the rotation of the 2nd connecting rod 63, the other end rotating shaft 62b of the 1st connecting rod 62 moves downwards.Thus, as shown in Figure 21 ~ Figure 23, be linked to slip side frame 15a, 15b side frame 8a, 8b along back of the end side rotating shaft 62a of the 1st connecting rod 62, move to downside (seat 29) direction.

In addition, contrary to the abovely, when the state making back frame 8 from the lodging shown in Figure 23 rises gradually, utilize action contrary to the above, sliding frame 15, along side frame 8a, the 8b at back, moves to seat 29 opposition side (upside) direction.

In addition, along with the movement of sliding frame 15, head frame 22 also carries out the action identical with above-described embodiment 1 to 4.

In the present embodiment 5, also can play the effect same with above-described embodiment 1 to 4, effect.

Embodiment 6

Figure 24 to Figure 26 represents an example of embodiment 6.

In above-described embodiment 1 to 5, linked slip side frame 15a(15b with connecting rod 27,54,61), the bottom of 53a and two side frame 4a(4b of chair frame 4), but in the present embodiment 6, side frame 10a, 10b of the axial pars intermedia of slip side frame 15a, 15b and the seat of seat frame frame 10 is linked with connecting rod 71, back frame 8 is more toppled over, sliding frame 15 more moves to seat 29 direction, and back frame 8 is more risen, and sliding frame 15 more moves to direction, seat 29 opposition side.

Figure 24 ~ Figure 26 represents example embodiment 6 being applied to above-described embodiment 1, is described based on Figure 24 ~ Figure 26.

As shown in Figure 24 ~ Figure 26, above-mentioned connecting rod 71 is formed by 1 connecting rod.In addition, this connecting rod 71 is formed as tabular, and its side view is formed as arc, and the central side being configured to this arc is positioned at front side A.One end (upper end) of this connecting rod 71 is centered by the rotating shaft 71a flatly arranged along left and right (C-D) direction, the pars intermedia of the axis of slip side frame 15a, 15b can be linked to rotatably along front and back, the other end (lower end) of connecting rod 71, centered by the rotating shaft 71b flatly arranged along left and right (C-D) direction, can be linked to the pars intermedia of side frame 10a, 10b of seat rotatably along front and back.

In addition, above-mentioned connecting rod 71, except shape as described above, can also be the arbitrary shapes such as linearity.In addition, as long as its one end of connecting rod 71 can be linked to slip side frame 15a, 15b rotatably, and its other end can be linked to side frame 10a, 10b of seat rotatably, and respective bond sites at random sets.

Because other structure, structure are identical with above-described embodiment 1, the description thereof will be omitted.

Then, the action of the chair 1 of this 6th embodiment is described.

Identically with above-described embodiment 1 to 5, make back frame 8 from the state erected as shown in figure 24, when rearward toppling over gradually centered by bolster 7, as shown in Figure 25,26, anteriorly top is mobile gradually along seat guiding elements 11 for seat frame frame 10.Thereupon, the rotating shaft 71b linked with seat frame frame 10 forwards moves on top, and while connecting rod 71 rotates centered by its both sides rotating shaft 71a, 71b, this rotating shaft 71a moves to downside (seat 29) direction.The sliding frame 15 being linked to the rotating shaft 71a of connecting rod 71, together with this rotating shaft 71a, along side frame 8a, the 8b at back, moves to seat 29 direction.

In addition, contrary to the abovely, when back frame 8 is risen gradually from the state lodged as shown in figure 26, sliding frame 15, along side frame 8a, the 8b at back, moves to seat 29 opposition side (upside) direction.

In addition, along with the movement of sliding frame 15, head frame 22 also carries out the action same with above-described embodiment 1 to 5.

In the present embodiment 6, also can play the effect same with above-described embodiment 1 to 5, effect.

Embodiment 7

In above-described embodiment 1 to 6, back frame 8 is rotated centered by bolster 7, utilize connecting rod 27,54,61,71, sliding frame 15,53 is made to swing to moving axially of back frame 8 according to rising of back frame 8, but also axle 7 can be located at sliding frame 15,53, utilize connecting rod that back frame 8 is moved as follows, namely, sliding frame 15,53 is more rearward toppled over, back frame 8 more upward (with direction, seat 29 opposition side) is mobile, sliding frame 15,53 more erects, and back frame 8 downwards (with direction, seat 29 opposition side) is mobile.

The bolster 7 being fixed on chair frame 4 is linked to the pars intermedia of sliding frame 15,53, centered by this bolster 7, sliding frame 15,53 can be set rotatably along front and back.In addition, sliding frame 15,53, links via coupling member 20 identically with above-described embodiment 1 to 7 with back frame 8, and back frame 8 can be arranged slidably along the axis of slip side frame 15a, 53a.

And, sliding frame 15,53 is more rearward toppled over centered by bolster 7, utilize connecting rod, back frame 8 is along axis (with direction, seat 29 opposition side) movement more upward of slip side frame 15a, 53a, seat frame frame 10 also rearward moves relative to the lower end of sliding frame 15,53 thereupon, and the rear end of seat frame frame 10 and the lower end of sliding frame 15,53 relatively move closer to.

In addition, sliding frame 15,53 more forwards rises centered by bolster 7, utilize connecting rod, back frame 8 is along axis (seat 29 direction) movement downwards of slip side frame 15a, 53a, seat frame frame 10 also more forwards moves relative to the lower end of sliding frame 15,53 thereupon, the rear end of seat frame frame 10 and the lower end of sliding frame 15,53 relatively gradually away from.

That is, back frame 8 is more toppled over, and sliding frame 15,53 more moves to seat 29 direction relative to back frame 8.In addition, back frame 8 more rises, and sliding frame 15,53 more moves to direction, seat 29 opposition side relative to back frame 8.

Because other structure, structure are identical with above-described embodiment 1 to 6, the description thereof will be omitted.

In the present embodiment 7, also can play the effect same with above-described embodiment 1 to 6, effect.

Embodiment 8

Also can make in above-described embodiment 1 to 7, sliding frame 15,53 is contrary with above-described embodiment 1 to 7 with the position relationship of the front and back of back frame 8.

Because other structure, structure and above-described embodiment 1 to 7 are equal, so the description thereof will be omitted.

In the present embodiment 8, also can play the effect same with above-described embodiment 1 to 7, effect.

Embodiment 9

Figure 27 to Figure 29 represents embodiment 9.

In above-described embodiment 1 to 8, sliding frame 15,53 is set, by making this sliding frame 15,53 moving axially to side frame 8a, the 8b at back, make the front surface of head frame 22,35,45,51, change relative to the angle [alpha] of the axle of side frame 8a, the 8b at above-mentioned back, but the present embodiment 9 is following embodiments, namely, sliding frame is not set, by making back frame 81 topple over, make the front surface of head frame 82, change according to the inclination angle beta of above-mentioned back frame 81 relative to the angle [alpha] of the axle of side frame 81a, the 81a at above-mentioned back.

Back frame 81 has side frame 81a, the 81a at a pair back in left and right, be fixedly installed fixing head component 84 on the top of the side frame 81a at this back.

Above-mentioned fixing head component 84 is formed as tabular, and is formed with the arc-shaped guiding groove 84a running through its table back of the body.As shown in Figure 27 ~ Figure 29, this arc-shaped guiding groove 84a is formed as arc-shaped, and be formed as arc be centrally located at rear B.

Head frame 82 has a pair head cam 82a, 82a, and this each head cam 82a, centered by the head axle 82d flatly arranged along left and right (C-D) direction, can be arranged at the lower outside of above-mentioned each fixing head component 84 rotatably along front and back.Elongated hole-shape guiding groove 82b makes one end of its length direction be positioned at the bottom of head cam 82a, and the neighbouring ground of central upper making the other end be positioned at head cam 82a is linearly arranged at each head cam 82a.

As shown in Figure 27 ~ Figure 29, guiding elements 83 run through above-mentioned elongated hole-shape guiding groove 82b and arc-shaped guiding groove 84a both sides and matched in clearance arrange, this guiding elements 83 can move along elongated hole-shape guiding groove 82b and arc-shaped guiding groove 84a both sides.In the present embodiment, pin shape is formed as by above-mentioned guiding elements 83 with the engaging portion of guiding groove 82b, 84a.

Because the shape of this elongated hole-shape guiding groove 82b and arc-shaped guiding groove 84a is formed as described above, so when above-mentioned guiding elements 83 moves along the vertical direction in two guiding groove 82b, 84a, along with the change of the position of guiding elements 83, the front surface of head frame 82, change relative to the angle [alpha] of the axle of side frame 81a, the 81a at above-mentioned back.Namely, guiding elements 83 is more moved upward gradually from its position bottom in guiding groove 82b, 84a, head frame 82 rises more gradually relative to back frame 81, namely above-mentioned angle [alpha] becomes large more gradually, after angle [alpha] reaches maximum (setting), guiding elements 83 is moved upward more gradually, and head frame 82 is toppled over more gradually relative to back frame 81, that is, above-mentioned angle [alpha] diminishes more gradually.

As shown in Figure 27 ~ Figure 29, the 1st links one end (rear end) of connecting rod 87a centered by the rotating shaft 87c flatly arranged along left and right (C-D) direction, can be linked to the bottom of back frame 81 along front and back rotationally.In addition, the 1st links the other end (front end) of connecting rod 87a centered by the rotating shaft 87d flatly arranged along left and right (C-D) direction, can be linked to one end (upper end) that the 2nd links connecting rod 87b along front and back rotationally.Above-mentioned 2nd links the other end (lower end) of connecting rod 87b centered by the rotating shaft 87e flatly arranged along left and right (C-D) direction, can be linked to side frame 10a, 10b of seat along front and back rotationally.

Be provided with on the top of above-mentioned each head cam 82a from the outstanding pin 82c in the inner side in its medial surface (C-D) direction to the left and right.Be provided with force application component 85 at above-mentioned guiding elements 83 with a pin 82c structure of an essay, utilize this force application component 85, guiding elements 83 is all the time by the upside of pin 82c() direction force.As long as the component that above-mentioned force application component 85 can exert a force to guiding elements 83 to pin 82c direction, arbitrary component can be used, in the present embodiment, employ helical spring.

Mobile member 86 is configured to, fix at the link rotating shaft 87d its one end being linked connecting rod 87a and the 2nd link connecting rod 87b relative to the above-mentioned 1st, intermediate portion can be hooked in slidably the outside of back seat connection shaft 10f and turn back, and under the state other end being fixed on guiding elements 83, do not relax between above-mentioned link rotating shaft 87d and guiding elements 83, metal silk thread, plastic rope etc. that this mobile member 86 can bend by rope form and at arbitrary position are formed, and guiding elements 83 is moved.In the present embodiment, as the 1st mobile member 86, metal silk thread is employed.

Because other structure, structure are identical with above-described embodiment 1 to 8, the description thereof will be omitted.

Then, the action of the chair 1 of this 9th embodiment is described.

When making rearward to topple over gradually from the state erected shown in Figure 27 as back frame 81, the distance L2 of rotating shaft 87d and back seat connection shaft 10f shortens gradually.Thus, as shown in figure 28, guiding elements 83 utilizes force application component 85 upward direction in guiding groove 82b, 84a to move, and head frame 82 rises gradually relative to back frame 81, that is, head frame 82 front surface, become large gradually relative to the angle [alpha] of the axle of the side frame 81a at above-mentioned back.Further, above-mentioned angle [alpha] reaches maximum (setting).

And, when making back frame 81 rearward topple over gradually further, its guiding elements 83 is moved upward gradually in guiding groove 82b, 84a, head frame 82 is rearward toppled over gradually relative to back frame 81, namely, above-mentioned angle [alpha] diminishes gradually, becomes the state that back frame 81 lodges as shown in figure 29.

In addition, with above-mentioned action on the contrary, when making back frame 81 rise gradually from the state lodged as shown in figure 29, back frame 81 more rises, head frame 82 rises more gradually relative to back frame 81, after above-mentioned angle [alpha] becomes setting, when making back frame 81 rise further, back frame 81 more rises, and head frame 82 is toppled over more gradually relative to back frame 81.

Like this, with above-described embodiment 1,3 to 6 identical in the present embodiment 9, according to the change in location of guiding elements 83 in guiding groove 82b, 84a, the front surface of head frame 82, change relative to the angle [alpha] of the axle of the above-below direction of above-mentioned back frame 81.

In addition, in the present embodiment 9, also carry out the action of the head frame 82 identical with above-described embodiment 1 to 8, about the action of head frame 82, the effect same with above-described embodiment 1 to 8, effect can be played.

The explanation of Reference numeral

1 chair

7 bolsters

8,81 back frame

14,46,55,83 guiding elements

15,53 sliding frames

22,35,45,51,82 head frames

23,43,45b, 52,82b, 84a guiding groove

α head frame, relative to the angle of the axle of the above-below direction of back frame

β back frame angle of inclination with respect to the horizontal plane

Claims (3)

1. a chair, is characterized in that,

This chair has seat frame frame, can be connected rotationally with this seat frame frame and the back frame that can rise down, the head frame that can rise down relative to this back frame, the sliding frame changed according to this back frame angle of inclination with respect to the horizontal plane relative to the position axial up and down of above-mentioned back frame, be located at the seat pan member of above-mentioned seat frame frame and be located at the back pan member of above-mentioned sliding frame

Above-mentioned back frame is more rearward toppled over, and above-mentioned sliding frame more moves to seat direction relative to this back frame, and above-mentioned back frame is more risen, and above-mentioned sliding frame more moves to direction, above-mentioned seat opposition side relative to this back frame,

Changed at relative position axially up and down by above-mentioned back frame and sliding frame, above-mentioned head frame, change relative to the angle of the axle of the above-below direction of above-mentioned back frame,

Above-mentioned back frame is more rearward toppled over from its raised state, above-mentioned head frame more rises relative to above-mentioned back frame, above-mentioned head frame, after the angle that becomes regulation relative to the angle of the axle of the above-below direction of above-mentioned back frame, back frame is more rearward toppled over further, above-mentioned head frame is more toppled over relative to above-mentioned back frame

Above-mentioned back frame is more risen from its lodging state, above-mentioned head frame more rises relative to above-mentioned back frame, above-mentioned head frame, after the angle that becomes regulation relative to the angle of the axle of the above-below direction of above-mentioned back frame, above-mentioned back frame is more risen further, and above-mentioned head frame is more toppled over relative to above-mentioned back frame.

2. chair according to claim 1, is characterized in that,

The guiding elements that this chair has guiding groove and can be located at movably in this guiding groove,

The position of above-mentioned guiding elements in above-mentioned guiding groove changes according to above-mentioned back frame angle of inclination with respect to the horizontal plane,

By the change in location of above-mentioned guiding elements in above-mentioned guiding groove, above-mentioned head frame, change relative to the angle of the axle of the above-below direction of above-mentioned back frame.

3. chair according to claim 2, is characterized in that,

Above-mentioned guiding groove is located at head frame.