CN101502362A

CN101502362A - Assembly of chair seat

Info

Publication number: CN101502362A
Application number: CNA2008101097297A
Authority: CN
Inventors: 金炯得
Original assignee: Daiwei Shoko; Daeha Co Ltd
Current assignee: Daiwei Shoko
Priority date: 2007-06-22
Filing date: 2008-06-10
Publication date: 2009-08-12
Anticipated expiration: 2028-06-10
Also published as: CN101502362B; KR100791454B1

Abstract

The invention relates to an assembly pivot member for seat panel, back panel and chair feet of a back-rest chair, comprising a bending backwards limitation mechanism and a bending backwards locking mechanism of simple structure, capable of multi-segment bending backwards, free bending backwards and locked bending backwards. The member not only increases convenience and comfort for using, but also reduced cost for fabrication.

Description

Assembly of chair seat

Technical field

The present invention relates to a kind of assembling hinge spare of seat, backboard and chair pin of chair, have layback limiting structure simple in structure and layback locking mechanism, can realize multistage layback, the freely locking of swinging back and swing back, not only easy to use and can increase comfort.

Background technology

The general chair back of the body, seat and chair pin assembling hinge spare are to swing back by the height up and down of adjusting seat and backboard to realize easy to use and increase comfort.

General assembly of chair seat utilizes lifting handle control air pressure rod valve seat freely can be risen or descends, utilize layback handle transfer rec liner mechanisms that backboard is freely swung back.

Though can making backboard freely swing back, assembling hinge spare in the past reaches easy to use, freely swing back but be difficult to be implemented on the multistage layback angle of hope, using general assembling hinge spare to reach the precedent that once had chair to translate into when swinging back to greatest extent, so the points for attention of Yao Qiuing are a lot of in use, do not have the assembly of chair seat of multistage layback and layback lock function so far simultaneously.

Summary of the invention

First purpose of the present invention is for a kind of simple structure being provided, having layback limitation function or layback lock function, can reaching the assembly of chair seat of the multistage layback or the locking of freely swinging back and swing back.

Second purpose of the present invention, provide a kind of keep the layback function but also can the angle of hope lock or can multistage the assembly of chair seat of locking.

The 3rd purpose of the present invention provides a kind of assembly of chair seat that can have layback limitation function and layback lock function simultaneously.

The 4th purpose of the present invention, be with make the plane at the upper-lower position of a round iron bar front portion, two side positions are made 1-4 locating slot, can tangling fixture with this, to reach multistage layback be feature.

Assembly of chair seat of the present invention is by last, following enclosing cover and make the elevating mechanism of assembly of chair seat rise and fall, can transfer the rec liner mechanisms of backboard layback, the layback limiting mechanism of backboard layback degree segmentation restriction, arbitrarily lock the layback locking mechanism of layback angle, the flexible flexible adjustment of regulation and control layback mechanism, the lifting handle on enclosing cover both sides and lock handle, in order to regulate and control the multistage layback handle that is in the enclosing cover front end of multistage layback, the other flexible adjustment handle of lifting handle constitutes, outer postoperculum both sides have a pair of circular arc slotted hole, one is equipped with the spring back seat across the cross bar peripheral group of passing slotted hole, respectively there is the boss of an assembling spring at the two ends of spring back seat, there is a protuberance to be hinged with a longitudinal rod between two boss, longitudinal rod leading portion position up and down is the plane, the position, both sides is shaped on phase 1-4 locating slot across a certain distance, the longitudinal rod front end on the spring front supporting member, has the hole so that can pass freely through, enclosing cover is provided with lock handle and is fixed on the driving lever head that rotates simultaneously on the lock handle, and deciding the angle rotation along with driving lever is first can cooperate a locating slot in the longitudinal rod 1-4 locating slot locking to swing back, or along with despining unlock the layback the layback locked component.

Described layback locked component is by may be stuck in a locating slot in 1-4 the locating slot that longitudinal rod leading portion both sides parts form and preventing the locking circle that it comes off, the plane pad in both sides of locking circle, to lock circle, pad and groups of springs are dressed up the rotary body of one, for rotary body can rotate back and forth and the shell that is provided with in certain limit, in order to keep the bounce-back portion of rotary body rotation, enclosing cover of making for the rotary body shell can be fixed on the spring front supporting member and connecting screw constitute.

Shell one side is shaped on a slotted hole for driving lever can move, slotted hole one side forms bounce-back portion, the protuberance that the mediad of bounce-back portion locking circle direction the is protruded driving lever that can rebound is so driving lever can be in last hole or hole down in the shell slotted hole, the locking and the releasing of realization layback state.

In spring installation and breathing zone, spring front supporting member, pad and enclosing cover all have than the bigger through hole of longitudinal rod external diameter, longitudinal rod is passed freely through, have on the shell and cooperate rotatable axis hole with rotary body, for driving lever can mobile enclosing cover and shell one side have slotted hole, the latch that formation may be stuck in a longitudinal rod 1-4 locating slot will be protruded in the top and the bottom of locking ring through hole.

Rotary body has the polygon endoporus that pad and locking circle are installed, endoporus one side forms the hook portion of the insertion nest combination of pad and the formation of locking circle lengthening part, the rotary body outside is combined with spring and the hook portion that prevents that spring from ejecting is arranged, the both sides of spring are turned on protuberance and are kept flexible bounce-back portion, the combined hole that combines with driving lever and prevent that driving lever breaks away from spring one end bending.

Beneficial effect of the present invention: the present invention has layback limiting mechanism simple in structure and layback locking mechanism, can reach the variation of the multistage layback or the locking of freely swinging back and swing back, easy-to-use and increase comfort.

Other the present invention multistage simple in structure is swung back, the parts major part of the locking mechanism of freely swinging back and swing back can utilize mould to manufacture, and expense is much manufactured in minimizing also can make product that superior effect is arranged.

Description of drawings

The present invention is described in further detail below in conjunction with drawings and the specific embodiments.

Fig. 1: the horizontal cross-sectional schematic of the assembly of chair seat of the embodiment of the invention;

Fig. 2: the horizontal cross-sectional schematic under the spring confined state in Fig. 1 of the present invention;

Fig. 3: the sectional drawing that is locked in first locating slot at assembly of chair seat of the present invention;

Fig. 4: the bottom surface schematic perspective view of flexible adjustment mechanism of the present invention and layback locking mechanism part;

Fig. 5: the exploded perspective schematic diagram of Fig. 4 of the present invention;

Fig. 6: the part amplification stereogram of Fig. 5 of the present invention;

Fig. 7: rotary body stereogram of the present invention;

Fig. 8: rotary body of the present invention rotates the positive cross-sectional schematic of the state of unlocking in a clockwise direction;

Fig. 9: rotary body of the present invention rotates in a counter-clockwise direction the positive cross-sectional schematic of lock-out state;

Figure 10: the positive cross-sectional schematic of the active state of the resiliency supported portion of shell of the present invention;

Figure 11: the sectional schematic diagram of flexible adjustment of the present invention mechanism;

Figure 12: the horizontal sectional view of elevating mechanism of the present invention;

Figure 13: the present invention transfers the body drawing, and (first) is plane, and (second) is side view;

Figure 14: rotary body drawing of the present invention, (first) is sectional drawing, (second) is front elevation;

Figure 15: revolving body schematic perspective view of the present invention;

Figure 16: revolving body drawing of the present invention, (first) is plane, (second) is the A-A of (first) " the part sectional drawing, and (third) is front elevation, (fourth) is side view;

Figure 17: multistage layback handle drawing of the present invention, (first) is plane, (second) is side view;

Figure 18: resiliency supported sheet schematic perspective view of the present invention;

Figure 19: the sectional drawing that in the present invention, is locked in the assembly of chair seat of first locating slot;

Figure 20: the sectional drawing that in the present invention, is locked in the assembly of chair seat of the 3rd locating slot;

Figure 21: the sectional drawing that in the present invention, is locked in the assembly of chair seat of the 4th locating slot;

Figure 22: the assembly of chair seat sectional drawing of 1 section layback state in the present invention;

Figure 23: the assembly of chair seat sectional drawing of 2 sections layback states in the present invention;

Figure 24: the assembly of chair seat sectional drawing of 3 sections layback states in the present invention;

Figure 25: the present invention swings back in the locking mechanism part amplification profile diagram, (A) be the state that unlocks and freely swing back, (B) be the state that is locked in first locating slot, (C) be the state that is locked in second locating slot, (D) be the state that is locked in the 3rd locating slot, (E) being the state that is locked in the 4th locating slot, (F) is that the same longitudinal rod (19) that do not lock with (A) can free layback state;

Figure 26: user mode side view of the present invention;

Figure 27: the side status figure that in the present invention, freely swings back.

Among the figure:

(1)-and assembly of chair seat, (2)-top enclosing cover,

(3)-the bottom enclosing cover, (3a)-the bar setting,

(4)-lifting handle, (4a), (77)-bar portion,

(5)-and lock handle, (6)-multistage layback handle,

(7)-and the elasticity joystick, (8), (9)-slotted hole,

(10)-and cross bar, (11)-spring back seat,

(12), (13)-spring, (14), (15)-spring positioning boss,

(16)-and protuberance, (17)-mating holes,

(18)-and primary screw, (19)-longitudinal rod,

(19a)-the longitudinal rod planar portions, (19b)-the longitudinal rod side surface part,

(20), (20a), (20b), (20c)-locating slot, (21)-spring front supporting member,

(22), (23)-support portion, (24)-locking thing assembly,

(25)-and rotary body, (26)-shell,

(27), (28), (42), (43)-inclined plane, (29), (30)-skewback,

(31), (32)-mating holes, (33), (34), (41)-slotted eye,

(35), (36)-threaded portion, (37)-double threaded screw,

(38), (39)-nut, (40)-spring front stall,

(44), (78)-through hole, (45), (46)-combination section,

(47)-and horizontal vertical pole, (48)-first gear,

(49)-second gear, (50)-3rd gear,

(51)-and handle, (52)-handle,

(53)-and air pressure rod, (54)-valve,

(55)-and swivel head, (56)-hole,

(57)-and transfer bar, (58)-zigzag part,

(59)-and the tail bend, (60)-transfer body,

(61)-and pressurization part, (the 63)-body that reverses,

(65)-and cylindrical portion, (66)-first stopper slot,

(67)-second stopper slot, (68)-3rd stopper slot,

(69)-the 4th stopper slot, (70)-resiliency supported sheet,

(71)-and fixture, (72)-4th gear,

(73)-and revolving body, (74)-5th gear,

(76)-and edge portion, (79)-first inclined plane,

(80)-second inclined plane, (81)-3rd inclined plane,

(82)-the 4th inclined plane, (83)-integral body,

(83a)-first protuberance, (83b)-second protuberance,

(84)-and backboard, (85)-seat,

(86)-and connection fittings, (87)-driving lever head,

(88)-and the locking circle, (89), (90)-pad,

(91)-and spring, (92)-enclosing cover,

(93)-and primary screw, (94)-resiliency supported portion,

(94a)-protuberance, (L1)-horizontal vertical pole moving interval,

(L2)-(L4)-spacing.

The specific embodiment

Describe in detail about superior point of the present invention below with reference to drawing.

When using example of the present invention in order to illustrate in drawing same composition accessory will adopt same symbol as far as possible, relevant open formation and function specify in order better to embody the main points of inventing and omit.

Fig. 1, Fig. 2 be expression with the plane of of the present invention assembly of chair seat 1 of layback limitation function with the layback lock function, the swingle rotation of regulating layback pressure that shown in Figure 2 is makes the spring compression, along with spring compression degree difference can be regulated and control layback pressure.

Assembly of chair seat 1 of the present invention is by the top and the bottom enclosing cover 2 that connects with connectors such as screw or primary screws, 3, top and the bottom enclosing cover 2, be provided with in 3 can the lifting assembly of chair seat lifting structure, transfer the rec liner mechanisms of backboard 84 layback, the layback limiting mechanism of backboard 84 multistage restriction on certain angle, the layback locking mechanism of locking layback on certain angle, rec liner mechanisms and the flexible elasticity controlling organization of control layback, at enclosing cover 2, the lifting handle 4 that 3 both sides are provided with, lock handle 5, control multistage layback and be arranged on the multistage layback handle 6 of enclosing cover front end and the elasticity joystick 7 that is arranged on the lifting handle 4 constitutes.

Rec liner mechanisms of the present invention is as described below:

Respectively have a circular arc slotted hole 8 in the both sides, rear portion of

bottom enclosing cover

3,9, one cross bar 10 and slotted

hole

8,9 cooperate and can moving interval L1, the cross bar 10 outer spring back seats 11 that are equipped with, respectively there is a spring 12 at spring back seat 11 two ends, 13

positioning boss

14,15, boss 14, one protuberance 16 is arranged between 15, one longitudinal rod 19 is inserted in the mating holes 77 of protuberance 16 and is hinged with screw 18, spring front supporting member 21 has the hole and makes things convenient for longitudinal rod 19 to pass, enclosing cover 3 inside in bottom have the support portion 23 of protrusion to cooperate support spring front supporting member 21 with the slotted eye 21b of spring front supporting member 21 bottoms, and being arranged on has the elasticity controlling organization that comprises elasticity joystick 7 in the spring front supporting member 21.

Described elasticity controlling organization such as Fig. 5 and shown in Figure 11, inclined plane 27,28 relative a pair of skewbacks 29,30, skewback 29, have screw rod 37 mating holes 31 on 30,32, with mating holes 31,32 rectangular directions have nut 38,39 mounting grooves 33,34, two has symmetrical screw thread 35,36 double threaded screw 37 passes mating holes 31,32 backs, one end stretches out from the side perforation of spring front supporting member 21, nut 38,39 mounting grooves 33 of packing into, 34 and with screw thread 35,36 cooperate separately, have on the spring front stall 40 and skewback 29,30 grooves 41 that cooperate, for skewback 29,30 inclined plane 27,28 can contact and form inclined plane 42 in groove 41 both sides, 43, central authorities for longitudinal rod 19 is passed freely through at spring front stall 40 have through hole 44, spring front stall 40 rear portions are protruding with a pair of spring 12,13 positioning boss 45,46, flexible adjustment handle 7 is arranged on lifting handle 4 bars, be fixed with first gear 48 on the drive link of elasticity joystick 7, be supported on the bottom enclosing cover 3 with second gear 49 of first gear, 48 engagements, screw rod 37 ends are fixed with the 3rd gear 50 with 49 engagements of second gear.

Nut the 38, the 39th, the not fixedly tetragonal nut that rotates with screw rod 37.Along with screw rod 37 rotation,

nut

38,39 near or away

from.Nut

38,39 near the time, under the inclined plane 42,43 of the inclined plane 27,28 of

skewback

29,30 and spring front stall 40 acted on, spring front stall 40

mobile spring

12,13 backward was compressed increase elastic force; Screw rod 37 opposite spins then

nut

38,39 away from, the effect lower spring front stall 40 on the inclined plane 42,43 of the inclined plane 27,28 of the

skewback

29,30 that is being in contact with one another and spring front stall 40 moves forward minimizing elasticity.

The flexible adjustment handle is to constitute by being arranged on the rotary handle 52 that is provided with on the drive link 47 on the lifting handle bar, the Rocker arm 51 that is arranged on drive link 47 ends and the Rocker arm 51.

Skewback

29,30 and spring front stall 40 can use metal or the rubber that can withstand shocks, plastics to make.

Rec liner mechanisms is to rely on

elastomeric spring

13,14 to keep elasticity.The spring front supporting member 21 of support elastic 13,14 front ends is to be supported on enclosing cover 2, the 3 inner support portions of protruding, the circular arc slotted

hole

8,9 that the cross bar 10 of the spring back seat 11 of

support spring

13,14 rear ends is with both sides, enclosing cover 3 rear portion form cooperates and a removable determining deviation L1, so keeps elasticity and support.

Longitudinal rod 19 can move along with slotted

hole

8,9 circular arcs at the layback state, its leading portion up and down the position be that plane, position, both sides 19b are shaped on mutually across a certain distance, an insertable 1-4

locating slot

20,20a, 20b, 20c.As shown in Figure 8, when the latch 88b of locking circle 88 is in upper-lower position plane 19a mobile do not had obstacle, longitudinal rod 19 can move freely; As shown in Figure 9, when be stuck in after the latch 88b of locking circle 88 rotation locating slot 1-4 20, during among 20a, 20b, the 20c one of them, so the longitudinal rod 19 mobile restricted layback states that stop to that is to say the locking layback.Described longitudinal rod 19 is arranged on as Fig. 1-shown in Figure 3 and can interact below the screw rod 37.

Lifting handle 4 is arranged on a side of enclosing

cover

2,3, and the valve 54 by control air pressure rod 53 makes the suitable lifting of assembly of chair seat 1.

Be provided with swivel head as shown in figure 12 on the drive link of lifting handle 4, having hole 56 in the top of swivel head 55 side cooperates with transfer bar 57 1 end curve parts 58, the pintle 59 of transferring the other end formation of bar 57 is hooked in the protuberance of the transfer body 60 of the axial region 3a that is arranged on bottom enclosing cover 3, forms pressurization and transfers the pressurization part that body 60 1 sides are transferred valve 54.

Then, it is to move right that the swivel head 55 of rotation and lifting handle 4 is then transferred bar in the direction of the clock, and pressurization part 61 declines rise chair or decline adjusting height as the air pressure valve 54 of Figure 19-transfer air pressure rod 53 shown in Figure 21.

When regulating the height of assembly of chair seat 1, with lifting handle 4 with opposite spin, swivel head 55 rotates in a counter-clockwise direction transfer bar 57 and is moved to the left, pressurization part 61 rises as shown in Figure 3, the air pressure valve 54 rising air pressure rods 53 of the air pressure rod 53 fixedly assembly of chair seat height that decommissions.

Though swivel head 55 is arranged on enclosing

cover

2,3 inside, elasticity joystick 7 is arranged on the lifting handle bar, controls respectively with lifting handle 4.Then, swivel head 55 is run through in the bar portion of elasticity joystick 7.

Layback limiting mechanism of the present invention is as described below:

As shown in figure 17, enclosing

cover

2,3 front ends are provided with multistage layback handle 6, cylindrical portion one side of multistage layback handle 6 has phase first locating slot 66 across a certain distance, second locating slot 67, the 3rd locating slot 68 and the 4th locating slot 69, the groove 3c of bottom enclosing cover 3 is provided with resiliency supported sheet 70, the pars intermedia triangle ridge 71 of elastic supporting member for supporting optical member 70 may be stuck in the 1-4 the locating slot, cylindrical portion 65 1 sides have the 4th gear of interlock, the bar 3b upper support that is arranged on bottom enclosing cover 3 has revolving body 73, revolving body 73 1 sides are provided with the 5th gear 74 that is meshed with the 4th gear 72, there is edge 76 both sides, subregion of revolving body 73,, longitudinal rod 19 on revolving body 73, has the through hole 78 that intersects with axis 77 for can passing freely through, between edge 76, be formed with the multistage inclined plane, along with the variation chair back of the front end relative position of multistage inclined plane and longitudinal rod 19 can freely be swung back or multistage restriction layback.

Multistage inclined plane such as Figure 15, shown in Figure 16, along with the difference that is stuck in first locating slot 66 on the ridge 71 or second locating slot 67, the 3rd locating slot 68, the 4th locating slot 69, contacted with the front end face of longitudinal rod 19 is first inclined plane 79 or second inclined plane 80, the 3rd inclined plane 81, the 4th inclined plane 82, it is the same that image pattern 22-Figure 24 represents, the spacing L2 between longitudinal rod 19 front end faces and the 1-3 inclined plane 79-81-L4 decision layback angle.

Like this, along with locating slot 66-69 is determined in the rotation of multistage layback handle 6, image pattern 22 is the same, when second locating slot 67 combines with resiliency supported sheet 70, first inclined plane 79 of revolving body 73 is relative with the front end face of longitudinal rod 19, and first inclined plane 79 determines 1 section layback of angle (about 3 °) with the spacing L2 of longitudinal rod 19.

As shown in figure 23, when the 3rd locating slot 68 combined with resiliency supported sheet 70, second inclined plane 80 of revolving body 73 was relative with the front end face of longitudinal rod 19, and second inclined plane 80 determines 2 sections layback of angle (about 7 °) with the spacing L3 of longitudinal rod 19.

As shown in figure 24, when the 4th locating slot 69 combined with spring support chip 70, the 3rd inclined plane 81 of revolving body 73 was relative with the front end face of longitudinal rod 19, the 3rd inclined plane 79 and longitudinal rod 19 spacing L4 decision 3 sections layback of angle (about 11 °).

Promptly along with the variation of spacing L2, the L3 on 79-the three inclined plane 81, first inclined plane of the front end face of longitudinal rod 19 and revolving body 73, L4 and limit layback.

Then, when first locating slot 66 of revolving body 73 combines with resiliency supported sheet 70, through hole 78 can be on same axis with longitudinal rod 19, and the layback restriction on

inclined plane

79,80,81 can be cancelled, and longitudinal rod 19 can pass through hole 78 can reach maximum freely degree of layback (predicting 0 °-27 °).

Figure 26, Figure 27 is the chair that expression is provided with assembly of chair seat 1 of the present invention, whole 83 tops are provided with backboard 84, whole 83 bottom is provided with cross bar 10, assembling assembly of chair seat 1 back segment top on the first protuberance 83b of whole 83 bottoms protrusion, the back segment of assembling seat 85 on the second protuberance 83a of whole 83 bottoms protrusion, connection fittings 86 tops that the front end both sides of assembly of chair seat 1 are provided with and the assembling of the front end of seat 85, during free layback state with reference to 0 °-27 ° of Figure 27 backboard 84 layback, slotted hole 8, cross bar 10 can freely be swung back in Space L 1 in 9.

Layback locking mechanism of the present invention is as follows:

By being arranged on enclosing cover 2 up and down, 3 outer layback lock handles 5 and be connected with it pass enclosing cover 2, the 3 drive link 5a that put in to inside, driving lever head 87 along with drive link 5a rotation, anterior upper-lower position is position, plane 19a, two side position 19b are phase the 1-4 locating slot 20 across a certain distance, 20a, 20b, the longitudinal rod 19 of 20c, deciding the angle rotation can be stuck in one of them locating slot locking layback state in the 1-4 locating slot or decide the locked component formation that the layback lock-out state is removed in the angle reverse rotation along with little along with driving lever head 87 is little;

One side of described driving lever head 87 will form the slotted eye 87a that cooperates with drive link 5a, the side extension bar is driving lever 87c, have and 26 planar portions 87b that contact of shell, the protuberance 87d that forms in driving lever 87c outer end for the spring that prevents combination comes off driving lever than the little driving lever 87c front portion of spring 91 internal diameters of assembling, drive link 5a and slotted eye 87a are polygonals, and mode is that quadrangle or hexagon cooperate rotation together preferably.

Locking thing assembly 24 is by locking circle 88 that is arranged on spring front supporting member 21 fronts and

pad

89,90, the rotary body 25 that has spring 91 overlapping outward, install and make rotary body 25 decide the shell 26 that angle is rotated little, the enclosing cover 92 and the screw 93 that shell 26 are fixed on spring front supporting member 21 fronts constitute, spring 91 combines with the driving lever of driving lever head 87, spring front supporting member 21 and

pad

89,90, have the through hole 21a bigger in the enclosing cover 92 than longitudinal rod 19 external diameters, 89a, 90a, 92a, longitudinal rod 19 is run through, in shell 26, have hole 26b, the slotted hole 92a of enclosing cover 92 and shell 26 1 sides for rotary body 25 is installed by rotation, 26b is in order to allow driving lever head 87 driving levers pass.

Locking circle 88 between the

pad

89,90 also will form for longitudinal rod 19 passes than the bigger through hole 88a of longitudinal rod 19 external diameters, but through hole 88a is projecting inward latch 88b in little some of the external diameter that may be stuck in top and the bottom the 1-4

locating slot

20,20a, 20b, 20c, the left and right sides portion of through hole 88a is connected longitudinal rod 19 front portions can be connected.

As shown in Figure 8, rotation along with rotary body 25, the latch 88b state that unlocks when being positioned at upper-lower position, so longitudinal rod 19 front ends can pass locked component 24 and move freely outside enclosing cover 92, reverse rotation along with rotary body 25, can be stuck in the 1-4

locating slot

20,20a, 20b, 20c one when latch 88b is arranged in position, the left and right sides, longitudinal rod 19 moves restricted, and the state of also promptly swinging back is locked.

Rotary body 25 has polygonal endoporus, and the

pad

89,90 and the locking circle 88 that are located at polygon endoporus 25a have polygon profile.Endoporus 25a has fin, cooperates with locating slot 89b, 90b, the 88c of

pad

89,90 and locking circle 88 marginal portions to prevent that

pad

89,90 and locking circle 88 from moving and rotation in rotary body 25, and rotary body 25 outsides are with spring 91.

Rotary body 25 1 sides are shaped on for the spring support portion 25d that prevents that hook portion 25c that spring 91 breaks away from and two terminal 91a, the 91b that makes things convenient for spring 91 from twining, and the driving lever 87c of driving lever head 87 passes combined hole 91c, and crooked spring terminal 91a prevents that driving lever breaks away from.

Spring support portion 25d can move along with the driving lever 87c of driving lever head 87, the result drives combining of spring support portion 25d, spring 91 and rotary body 25 and decide angle (or little determining deviation) rotation little, and driving lever 87c also can keep the elasticity of some when rotary body 25 rotated along with

spring terminal

91a, 91b driving lever 87c.

Slotted hole 26a one side that shell 26 forms is shaped on resiliency supported portion 94, and it has the function that makes driving lever head 87 be in upper hole 26c or the bottom hole 26d of slotted hole 26a to the protuberance 94a that locking circle 88 directions are circular arc.

In other words, as shown in figure 10, because the middle protuberance 94a of slotted hole 26a is narrower than the external diameter of driving lever 87c, when not regulating lock handle 5, the driving lever 87c of driving lever head 87 rests on upper hole 26c or bottom hole 26d, keeps the lock-out state or the unlocked state of longitudinal rod 19.

As shown in Figure 8, state is realized locking from unlocking, see Fig. 2, lock handle 5 pressed that driving lever head 87 is center decline rotation with drive link 5a, as shown in Figure 9, rotary body 25 rotates in a counter-clockwise direction, and the latch 88b of locking circle 88 will be stuck in the locating slot among the 1-4

locating slot

20,20a, 20b, the 20c, and longitudinal rod 19 front ends are fixed, thereby the cross bar 10 of spring back seat 11 is along with mobile the stopping of slotted

hole

8,9, the locking of layback state.

When a locating slot blocks fixedly among the 1-4

locating slot

20,20a, 20b, the 20c, when the chair user down sits seat 85 with backboard with the angle layback of hope by following layback lock handle 5, the latch 88b of locking circle 88 will be on the angle of backboard 84 layback with the 1-4

locating slot

20,20a, 20b, 20c in a locating slot combine the locking layback.

Along with protuberance 94a driving lever head 87 is locked in the bottom hole 26d maintenance lock-out state of slotted hole 26a when at this moment not transferring layback lock handle 5.

Situation about unlocking under the lock-out state as shown in Figure 9, the same with Fig. 2, when the lock handle 5 of will swinging back lifts, driving lever head 87 is to rise rotation on the center with drive link 5a, as shown in Figure 8, rotary body 25 rotates in a clockwise direction, will be combined among the 1-4

locating slot

20,20a, 20b, the 20c locking on the locating slot and enclose 88 latch 88b and go to and be positioned at the upper-lower position engagement release, the longitudinal rod 10 of spring front supporting member 11 can move freely along with slotted

hole

8,9, and state also promptly unlocks.Equally, when do not regulate layback during lock handle 5 along with protuberance 94a keeps the state that unlocks with the upper hole 26c that driving lever head 87 is locked in slotted hole 26a.

When above lock-out state, when the chair user down sits seat 85 with backboard slightly layback locating slot is easily separated with latch 88b, because of user back and backboard 84 contact conditions along with

spring

12,13 or other resiliency supported functions (spring etc.), do not hit back of the body phenomenon and occur so do not have.Safer in the use by user's back strength state that unlocks in other words.

Figure 25 is layback locking thing assembly 24 part sectional drawings, (A) be that the driving lever 87c of the same driving lever head 87 with Fig. 9 is positioned at upper hole 26c, the latch 88b of locking circle 88 is positioned at or does not have during lower position the sectional drawing of lock-out state, (B) be that the driving lever 87c of the same driving lever head 87 with Figure 10 is positioned at bottom hole 26d, when being positioned at a left side or right two side positions, the latch 88b of locking circle 88 combines the sectional drawing of locking backboard 84 layback with first locating slot 20, (C) be that backboard 84 locks sectional drawings with 7 ° of layback states when combining with the second locating slot 20a, (D) be that backboard 84 locks sectional drawings with 18 ° of layback states when combining with the 3rd locating slot 20b, (E) be that backboard 84 locks sectional drawings with 27 ° of layback states when combining with the 4th locating slot 20c, (F) be that the same backboard 84 with Figure 27 of sectional drawing of the same state of freely swinging back that longitudinal rod 19 moves freely under the state of unlocking with (A) can be swung back to greatest extent, at slotted hole 8, cross bars 10 can mobile space L1 in 9, the maximum angle of can swinging back in other words (general 0 °-27 °).

Undeclared symbol 98 is longitudinal rod holes on the drawing, the 99th, and on connecting, the screw hole of following enclosing cover.

As above Shuo Ming the present invention is not only and is limited to embodiment and drawing for reference, on technical foundation of the present invention, can multiplely replace, and distortion and change, technical scope of the present invention is the general knowledge, and the person is understandable.

Claims

1, the assembling hinge spare of a kind of seat of chair, backboard and chair pin is characterized in that: comprise enclosing cover, and realize the multistage layback handle of backboard multistage layback function, the lock handle of layback locking mechanism and the flexible adjustment handle of flexible adjustment mechanism; Described layback locking mechanism by: enclosing cover, lock handle (5), with the drive link (5a) that puts in the lock handle (5) of enclosing cover inside connect the driving lever head (87) of rotation, the last lower plane (19a) that is arranged on longitudinal rod (19) leading portion in the flexible adjustment mechanism, both sides (19b) closely spaced 1-4 locating slots (20) (20a) (20b) (20c), and one decide (20a) (20b) (20c) combination or the locked component that separates formation of angle rotation and 1-4 locating slot (20) along with driving lever head (87) is little.

2, chair according to claim 1 assembling hinge spare is characterized in that: described locked component is to be gone up the rotary body (25) that is provided with, locking circle (88) and pad (89) (90) in the polygon endoporus (25a) that is installed in rotary body (25), be enclosed within the spring (91) of rotary body (25) outer surface and (91b) combine driving lever head (87) formation that can make the little determining deviation rotation of rotary body (25) with the terminal (91a) of spring (91) by the fixed housing (26) of spring front supporting member (21) front that is arranged on flexible adjustment mechanism, shell (26).

3, chair assembling hinge spare according to claim 2, it is characterized in that: described locking circle (88), pad (89) (90) and shell (26) all have through hole for longitudinal rod (19) can be passed freely through, the top of locking circle (88) or bottom for combination or separate described 1-4 locating slot (20) (20a) (20b) locating slot in (20c) form latch (88b), shell (26) one sides have slotted hole (26b).

4, chair assembling hinge spare according to claim 1 and 2, it is characterized in that: described driving lever head (87) one sides have the keyhole (87a) that combines with the drive link (5a) of lock handle (5), the front portion of driving lever (87c) (91b) combines with the spring terminal (91a) of spring (91), planar portions (87b) is made in the anterior side of driving lever (87c), and driving lever (87c) end is shaped on protuberance (87d).

5, chair assembling hinge spare according to claim 2, it is characterized in that: a side of described shell (26) has slotted hole (26b), slotted hole (26b) side is shaped on a resiliency supported portion (94), resiliency supported portion (94) central authorities form protuberance (94a) that locking circle (88) bearing circle arc protrudes with slotted hole (26b) upper and lower be distinguished into hole (26c) and under hole (26d).

6, chair assembling hinge spare according to claim 2, it is characterized in that: described rotary body (25) has and prevents that hook (25c) that spring (91) comes off and two terminals (91a) that make things convenient for spring (91) from (91b) twining the spring support portion of supporting (25d), spring terminal (91a) forms the combined hole (91c) combine with the driving lever (87c) of driving lever head (87), driving lever (87c) disengaging of spring terminal (91a) bending to prevent driving lever head (87) between (91b).

7, chair assembling hinge spare according to claim 1 and 2, it is characterized in that: described flexible adjustment mechanism is: have a pair of circular arc slotted hole (8) (9) in the both sides, rear end of bottom enclosing cover (3), one cooperate with slotted hole (8) (9) can moving interval (L1) cross bar (10), the outer spring back seat (11) that is equipped with of cross bar (10), spring (12) (13) is installed on the spring positioning boss (14) (15) of spring back seat (11), and enclosing cover (2) inside has a barrier portion (22) (23) and hindering spring front supporting member (21); Lay nut (38) (39) in the relative a pair of skewback (29) (30) in inclined plane (27) (28), one double end screw rod (37) connects skewback (29) (30) and cooperates with nut (38) (39), with spring front stall (40) that skewback (29) (30) cooperates on have the inclined plane (42) (43) that contacts with inclined plane (27) (28) cooperation of skewback (29) (30), spring front stall (40) back is protruding with the positioning boss (45) (46) of spring (12) (13), the 1st gear (48) and the 2nd gear (49) engagement, the 3rd gear of fixedlying connected and the 2nd gear (49) engagement along with elasticity joystick (7) rotation with double threaded screw.

8, chair assembling hinge spare according to claim 1 and 2, it is characterized in that: described layback limiting mechanism is: bottom enclosing cover (3) leading section is provided with multistage layback handle (6), cylindrical portion (65) one sides of multistage layback handle (6) have 1-4 stopper slot (66) (67) (68) (69), bottom enclosing cover (3) groove (3c) is provided with the resiliency supported sheet (70) that cooperates with stopper slot, cylindrical portion (65) one sides are fixed with the 4th gear (72) of interlock rotation, be arranged on bottom enclosing cover (3) revolving body (73) is arranged, one side of revolving body (73) is the 5th gear (74) that meshes with the 4th gear (72), for make longitudinal rod (19) freely come in and go out with the crisscross through hole (78) that has of the axis (77) of revolving body (73), be formed with the multistage rake between revolving body (73) the edge portion (76).

9, chair according to claim 8 assembling hinge spare is characterized in that: the multistage rake is by relative with the front end of longitudinal rod (19) respectively the 1st inclined plane (79) and the 2nd inclined plane (80) and the 3rd inclined plane (81) and the 4th inclined plane (82) constitute along with the diverse location of the 1st stopper slot (66) on the triangle ridge (71) that is stuck in the resiliency supported sheet or the 2nd stopper slot (67), the 3rd stopper slot (68), the 4th stopper slot (69).