CN200983986Y

CN200983986Y - Supporting mechanism of lying type back rest chair

Info

Publication number: CN200983986Y
Application number: CN 200620124576
Authority: CN
Inventors: 卢国球; 卢俊华
Original assignee: JIANGSU YUHUI LIGHT INDUSTRY MACHINERY Co Ltd
Current assignee: JIANGSU YUHUI LIGHT INDUSTRY MACHINERY Co Ltd
Priority date: 2006-07-03
Filing date: 2006-07-03
Publication date: 2007-12-05
Anticipated expiration: 2016-07-03

Abstract

The utility model relates to a recliner, in particular to a mechanical support mechanism. The aim of the utility model is to provide a support mechanism of reliable operation, comfortable extension, and light contract for recliner. The support mechanism is of a left-right symmetric structure, a support foot is provided at each of the two sides of the support mechanism; a main execution device is connected to the top of each support foot; the chair back device connected at the back of the main execution device and the support device connected to the front of the main execution device can be opened out through the driving of the main execution devices; the two main execution devices are respectively connected to a self-lock device; the two self-lock devices can be controlled by a control device; the main execution device comprises a front support lever, a rear support lever, a front rocker, a rear rocker, a bearing support, a link lever, a pullback spring and an air spring; the normal-open pullback spring used as driving element is connected between the rear rocker and the front support lever, one end of the normal-open air spring used as buffering element is hinged at the middle of the front rocker, the other end of the air spring is arranged at the hinging part of the front support lever and the support foots.

Description

The supporting mechanism of chair capable of lying

Technical field

The utility model relates to a kind of rota-cline seat furniture, concrete its mechanical support mechanism that relates to.

Background technology

More and more be subjected to liking of consumer as a kind of top-grade furniture chair capable of lying, its major technique part supporting mechanism also experiences continuous improvement, to satisfy the requirement of user to comfort level.No. 7040692 files of U.S. Pat disclose a kind of mechanical support mechanism of chair capable of lying, this supporting mechanism is made up of multi-connecting-rod mechanism, has punctured position, the centre position, complete three different holding states of expanded position, but there are 2 deficiencies in above-mentioned supporting mechanism: the one, effectively be stretched over expanded position in order to guarantee supporting mechanism, the manufacturer usually adopts the dynamical element of big coefficient of elasticity, such design has brought two negative consequences, at first the speed of Dan Chuing is accelerated greatly, make the user who lies on the seat feel stressed suddenly, comfort level is affected, secondly shrink in the return process at supporting mechanism, need the user to increase greatly, make some user in return uses, seem difficult at the active force that applies by the foot device end; The 2nd, this supporting mechanism self-locking device has adopted the handle control structure, operating grip seems not too convenient when the consumer is in different gestures in seat, especially in the face of the user of the different stature bodily forms, the fixing lever operated mode of mechanical location has increased the inconvenience of using greatly.

The utility model content

The purpose of this utility model provides a kind of supporting mechanism of releiving, shrinking the light chair capable of lying of return process that operates reliably, stretches.

The technical scheme that realizes the utility model purpose is as follows:

A kind of supporting mechanism of chair capable of lying, be the left-right symmetry structure, both sides respectively have leg, each leg top is connected with main actuating unit, drive the back-rest means for chair that is connected its rear side and be connected launching of its front side by each main actuating unit by foot device, two main actuating units respectively are connected with self-locking device, and two self-locking devices are opened by control device control, and above-mentioned main actuating unit has front support rod, back support rod, preceding rocking bar, back rocking bar, bearing frame, connecting rod, extension spring and air spring; The back and front supporting bar is hinged on the leg front and rear portions respectively, forward and backward rocking bar is hinged with the back and front supporting bar respectively, and it is hinged between the forward and backward rocking bar, the rear portion of above-mentioned bearing frame is hinged with the back rocking bar, the middle part is hinged by connecting rod and preceding rocking bar, the above-mentioned extension spring of often opening as dynamical element is connected between back rocking bar and the front support rod, and above-mentioned air spring one end that often opens as buffer element is hingedly mounted on preceding rocking bar middle part, and the other end is installed on the hinged place of front support rod and leg.

Describedly comprise that by foot device link assembly and pushing away throws pushing away that link assembly launches and throw assembly, described pushing away thrown assembly and had lever, first connecting rod and second connecting rod, above-mentioned lever middle part is hinged with the bearing frame postmedian of main actuating unit, the first connecting rod two ends are hinged with an end of the middle part of the front support rod of main actuating unit and lever respectively, the second connecting rod two ends respectively with the other end of lever and the rear side rod hinge connection of link assembly.

The self-locking device of above-mentioned two main actuating units respectively has self-locking pipe, tapered end, locking bar and locking extension spring, the self-locking pipe passes across on the bearing frame of two main actuating units, one end of tapered end is fixedly connected on the self-locking pipe and exposes on the tube head of bearing frame, the other end is hinged on the end of locking bar, the other end of locking bar is hinged on and pushes away the second connecting rod front portion of throwing assembly, and the locking extension spring is connected to make between the bearing frame of main actuating unit and the locking bar and is an acute angle between tapered end and the locking bar and plays self-locking action.

Described control device is the drag-line control device, comprise traction cable, holder and dead bolt, the said fixing seat is fixed on the bearing frame of main actuating unit and is positioned at the tapered end top of self-locking device, and described holder and dead bolt are hinged, and the drag-line of traction cable is connected on the dead bolt; Described dead bolt be provided with the tapered end that can touch self-locking device and contact point near tapered end and locking bar hinged place by compression leg, on dead bolt, the tapered end of self-locking device is applied the elastic force that downward active force overcomes the locking extension spring by compression leg, impel the acute angle between tapered end, the locking bar to open, thereby self-locking device is released.

Above-mentioned back-rest means for chair has " L " shape support and backrest pole, and the back rocking bar of pole one end and main actuating unit is hinged, and the corner portion of the other end and support is hinged, and a wherein end of above-mentioned " L " shape support and the bearing frame of main actuating unit are hinged.

The good effect that the utlity model has is as follows: (1) main actuating unit of the present utility model and all adopted mechanical linkage by foot device, so operate reliably; (2) on the main actuating unit of the present utility model air spring has been installed, when main actuating unit will play drag effect during forward swing under the extension spring effect, thereby has been slowed down the forward swing speed of main actuating unit; And when main actuating unit from the forward swing position during to after-contraction air spring the air pressure pulling force is provided, help main actuating unit to reply, make the stretching, extension of supporting mechanism releive and reclaim light; (3) self-locking device of the present utility model adopts the control device control of stayed structure to open, and lies in the user in the chair no matter being in which position can both carry out switching manipulation very easily, and more laborsaving.

Description of drawings

Front schematic view when Fig. 1 is the utility model chair capable of lying supporting mechanism punctured bit.

Right side schematic diagram when Fig. 2 is the utility model punctured bit.

Fig. 3 be among Fig. 1 A-A to cutaway view.

Front schematic view when Fig. 4 launches the position for the utility model supporting mechanism.

Right side schematic diagram when Fig. 5 launches the position for the utility model.

Fig. 6 be among Fig. 4 B-B to cutaway view.

Fig. 7 is a self-locking device part schematic diagram in the utility model.

The specific embodiment

See Fig. 1-3, the supporting mechanism of the utility model chair capable of lying is the left-right symmetry structure, and bottom, left parts upright its leg 1 that is on the right side, each hinged main actuating unit 2 in leg top, and the rear side of each main actuating unit connects back-rest means for chair 3, the anterior connection by foot device 4; Each main actuating unit 2 is provided with self-locking device 6, master's actuating unit 2 forwards moves when self-locking device discharges, driving back-rest means for chair leans on backward, promote to lean on foot device to stretch out forward simultaneously and make whole supporting mechanism arrive expanded position from punctured position, the self-locking device 6 on the two main actuating units 2 is opened by a control device 8 controls.

Above-mentioned each main actuating unit has front support rod 21, back support rod 22, preceding rocking bar 23, back rocking bar 24, bearing frame 25, connecting rod 26 and dynamical element extension spring 27, front support rod 21 and back support rod 22 are hinged on leg 1 front and rear part respectively, preceding rocking bar 23 and back rocking bar 24 are respectively with preceding,

back support rod

21,22 is hinged, and it is preceding, back rocking bar 23, hinged between 24, the rear portion of bearing frame 25 is hinged with back rocking bar 24, the middle part is hinged by connecting rod 26 and preceding rocking bar 23, the dynamical element extension spring 27 of main actuating unit 2 is installed between back rocking bar 23 and the front support rod 21, and extension spring is in normal extended state, makes front support rod 21 have relative approaching trend with back rocking bar 24; Between preceding rocking bar 23 and front support rod 21, also be connected with an air spring 5 in addition, the hinged place 101 of rocking bar middle part 100 and front support rod and leg before its two ends are hinged on respectively; When supporting mechanism is in the recovery state (as Fig. 2, shown in 3), although the pulling force effect of dynamic element extension spring 27, self-locking device is had an effect and is made supporting mechanism be locked in punctured position, supporting mechanism is just moved to launching the position by contraction state under the effect of dynamical element extension spring 27 when self-locking device discharges, this moment, main actuating unit integral body was forwards moved, before it, back

support rod

21,22 respectively around swinging forward with the pin joint of leg,

front support rod

21 and 23 relative motions of preceding rocking bar, the air spring that is installed between front support rod 21 and the preceding rocking bar 23 is stressed, hinder the relative motion of front support rod 21 and preceding rocking bar 23, thereby slow down the swing forward of main actuating unit, further, back-rest means for chair 3 backs of above-mentioned supporting mechanism are all slowed down by motion and by protracting of foot device 4; On the contrary, when supporting mechanism is got back to contraction state by expanded position, need apply external force impels main actuating unit to swing backward, be installed in the air spring 5 between front support rod 21 and the preceding rocking bar 23 this moment owing to be in compressive state, possesses the trend that bullet is stretched, to impel front support rod 21 and preceding rocking bar 23 relative motions to open between the two distance, thereby help external force to make the supporting mechanism of above-mentioned chair capable of lying get back to punctured position, conspicuous, air spring 5 between above-mentioned front support rod and the preceding rocking bar is in the stretching, extension of supporting mechanism, reclaim in the motion process, played good buffering, laborsaving effect.

Above-mentioned comprise link assembly 41 and push away by foot device 4 throw assembly 7, push away and throw assembly 7 and have lever 71, first connecting rod 72 and second connecting rod 73, bearing frame 25 postmedians of above-mentioned lever 71 middle parts and main actuating unit 2 are hinged, first connecting rod 72 two ends are hinged with an end of the middle part of the front support rod 21 of main actuating unit 2 and lever 71 respectively, and second connecting rod 73 two ends are hinged with the rear side connecting rod 41-1 by the link assembly 41 of foot device 4 with the other end of lever 71 respectively; Push away and throw assembly 7 when main actuating unit is subjected to swing forward under the extension spring 27 pulling force effects, front support rod 21 and back rocking bar 24 relative motions and shorten its spacing from, corresponding motion will take place in the first connecting rod 72 and the lever 71 that are hinged between front support rod 21 and the back rocking bar 24, it is the upwards rotation of pin joint between first connecting rod 72 and the lever 71, under the interlock effect of lever 71, second connecting rod 73 will travel forward, because its front end is hinged on the rear side connecting rod 41-1 by foot device 4, the link assembly that promotes by foot device that travels forward of second connecting rod 73 stretches forward, stretch by the link assembly 41 of foot device 4 and to form a supporting plane, in chair capable of lying described in the utility model, become ejection by the pin support section.

See Fig. 7, above-mentioned self-locking device has tapered end 62, locking bar 63, locking extension spring 64, two self-locking devices 6 have a shared self-locking pipe 61, self-locking pipe 61 passes across the bearing frame 25 of supporting mechanism left and right sides master's actuating unit 2 and exposes in the bearing frame outside, tapered end 62 1 ends expose bearing frame 25 outer tube heads with self-locking pipe 61 fixedlys connected, the other end and locking bar 63 1 ends are hinged, the other end of locking bar 63 and the above-mentioned second connecting rod 73 that leans on pushing away of foot device 4 to throw assembly 7 are anterior hinged, locking extension spring 64 is connected between the bearing frame 25 and locking bar 63 of main actuating unit, guarantee the acute angle state between tapered end 62 and the locking bar 63, control device 8 is installed on the bearing frame 25 of main actuating unit, is used for to tapered end 62, locking bar 63 hinge point produce active force and discharge self-locking device.

Above-mentioned two self-locking devices are by a control device 8 controls, control device 8 is drag-line control device, only need a wherein side self-locking device of control two self-locking devices to get final product, this control device 8 has stayed structure 81, holder 82 and dead bolt 83, said fixing seat 82 is fixedly mounted on the bearing frame 25 of main actuating unit and is positioned at the tapered end 62 of self-locking device 6, locking bar 63 hinge point top, dead bolt 83 and holder 82 are hinged, dead bolt 83 is provided with by compression leg 83-1 and drag-line hole 83-2, drag-line 81-1 is connected on the drag-line hole of dead bolt 83, press that compression leg 83-1 contacts with the tapered end 62 of self-locking device 6 and this contact point near tapered end and locking bar articulated section.When the pulling drag-line, dead bolt 83 rotates around the pin joint with holder 82 under the pulling of drag-line, by compression leg 83-1 tapered end 62, locking bar 63 articulated sections of self-locking device are applied downward active force on the dead bolt, the pulling force that tapered end 62 will overcome self-locking spring 64 rotates around self-locking pipe 61 place axial lines, acute angle between tapered end and the locking bar is progressively opened, thereby self-locking device is released, and main actuating unit is able to smooth forward swing under dynamical element extension spring 27 effects.

When the control device of supporting mechanism one side is had an effect, when impelling this side chain head, locking bar articulated section to move downward and launch therebetween acute angle, the rotation of this side chain head will drive the corresponding rotation of self-locking pipe, thereby impel the tapered end of opposite side to rotate, and then allow the self-locking structure of opposite side discharge.

See Fig. 2, the back-rest means for chair of the supporting mechanism of the utility model chair capable of lying has " L " shape support 31 and backrest pole 32, the back rocking bar 24 of pole one end and main actuating unit is hinged, the corner portion of the other end and support is hinged, and a wherein end of above-mentioned " L " shape support and the bearing frame of main actuating unit are hinged; When supporting mechanism from punctured position when expanded position moves, corresponding sports will take place with the pole of handing-over on the rocking bar 24 of back in " L " shape support that is hinged on the bearing frame 25 of main actuating unit 2, promptly lean on backward.

Fig. 4-Fig. 6 is the schematic diagram of the utility model supporting mechanism expanded position, and this moment, back-rest means for chair 3 was in by the position, back, stretched out forward by foot device 3, and a supporting plane is provided.The dynamical element extension spring 27 that is installed in the main actuating unit 2 between back rocking bar 24 and the front support rod 21 is in relative contraction state, and the air spring 5 before being installed between rocking bar 23 and the front support rod 21 is in compressive state; Impel external force that above-mentioned supporting mechanism is returned to punctured position to provide by the consumer who is sitting on the chair capable of lying that this supporting mechanism forms, applying downward active force by the foot device end, will be by foot device to after-contraction, be hinged on by the second connecting rod 73 of throwing assembly 7 that pushes away on the foot device and be subjected to backward thrust, push away the relative motion and both are moved downward the articulated section under the interlock effect of the lever 71 of throwing assembly and first connecting rod 72, thereby impel the bearing frame 25 that is hinged on the main actuating unit 2 on the lever to move backward, and then drive main actuating unit and swing backward, back-rest means for chair also leaned on forward under the interlock effect when main actuating unit was swung backward.

The utility model relates generally to the aggregate motion of multi-connecting-rod mechanism, in the contraction of whole chair capable of lying supporting mechanism, extension movements, a lot of relevant structures obtain open in the documents that the background technology of present specification partly provides, and this paper repeats no more this part.

Claims

1, a kind of supporting mechanism of chair capable of lying, be the left-right symmetry structure, both sides respectively have leg (1), each leg top is connected with main actuating unit (2), be connected the back-rest means for chair (3) of its rear side and be connected launching of its front side by each main actuating unit drive by foot device (4), two main actuating units (2) respectively are connected with self-locking device (6), two self-locking devices (6) are opened by a control device (8) control, and it is characterized in that: above-mentioned main actuating unit (2) has front support rod (21), back support rod (22), preceding rocking bar (23), back rocking bar (24), bearing frame (25), connecting rod (26), extension spring (27) and air spring (5); Before, back support rod (21,22) it is preceding to be hinged on leg (1) respectively, the rear portion, before, back rocking bar (23,24) respectively with preceding, back support rod (21,22) hinged, and it is preceding, back rocking bar (23,24) hinged between, the rear portion of above-mentioned bearing frame (25) is hinged with back rocking bar (24), the middle part is hinged by connecting rod (26) and preceding rocking bar (23), the above-mentioned extension spring (27) of often opening as dynamical element is connected between back rocking bar (23) and the front support rod (21), above-mentioned air spring (5) one ends that often open as buffer element are hingedly mounted on preceding rocking bar middle part (100), and the other end is installed on the hinged place (101) of front support rod (21) and leg (1).

2, the supporting mechanism of chair capable of lying according to claim 1, it is characterized in that: described comprise link assembly (41) and push away by foot device (4) throw pushing away of link assembly expansion and throw assembly (7), described pushing away thrown assembly (7) and had lever (71), first connecting rod (72) and second connecting rod (73), above-mentioned lever (71) middle part is hinged with bearing frame (25) postmedian of main actuating unit (2), first connecting rod (72) two ends are hinged with an end of the middle part of the front support rod (21) of main actuating unit (2) and lever (71) respectively, second connecting rod (72) two ends respectively and the rear side connecting rod (41-1) of the other end of lever (71) and link assembly (41) hinged.

3, the supporting mechanism of chair capable of lying according to claim 1, it is characterized in that: the self-locking device of above-mentioned two main actuating units (2) respectively has tapered end (62), locking bar (63) and locking extension spring (64), two self-locking devices have a shared self-locking pipe (61), self-locking pipe (61) passes across the bearing frame (25) of two main actuating units (2), one end of tapered end (62) is fixedly connected on self-locking pipe (61) and exposes on the tube head of bearing frame (25), the other end is hinged on the end of locking bar (63), the other end of locking bar (63) is hinged on and pushes away second connecting rod (73) front portion of throwing assembly (7), and locking extension spring (64) is connected to make between the bearing frame (25) of main actuating unit and the locking bar (62) and is an acute angle between tapered end (62) and the locking bar (63) and plays self-locking action.

4, the supporting mechanism of chair capable of lying according to claim 1, it is characterized in that: described control device (8) is the drag-line control device, comprise traction cable (81), holder (82) and dead bolt (83), tapered end (62) top of self-locking device (6) is gone up and be positioned to the bearing frame (25) that said fixing seat (82) is fixed on main actuating unit, described holder (82) and dead bolt (83) are hinged, and the drag-line (81-1) of traction cable (81) is connected on the dead bolt (83); Described dead bolt (83) is provided with the tapered end (62) that can touch self-locking device (6) and contact point and presses compression leg (83-1) near tapered end (62) and locking bar (63) hinged place, on dead bolt, the tapered end (62) of self-locking device is applied the elastic force that downward active force overcomes locking extension spring (64) by compression leg (83-1), impel the acute angle between tapered end, the locking bar to open, thereby self-locking device is released.

5, the supporting mechanism of chair capable of lying according to claim 1, it is characterized in that: above-mentioned back-rest means for chair (3) has " L " shape support (31) and backrest pole (32), the back rocking bar (24) of pole one end and main actuating unit is hinged, the corner portion of the other end and support is hinged, and a wherein end of above-mentioned " L " shape support and the bearing frame of main actuating unit are hinged.