CN2529562Y - Chair with adjustable reclining angle - Google Patents

Abstract

A chair with adjustable sitting and leaning angles comprises a chair frame assembly with two left and right frame bodies, a chair back and a chair seat which are pivoted between the two frame bodies in an L-shaped connection mode, and an adjusting mechanism which can support the chair seat and change the angles of the chair back and the chair seat. The chair frame assembly also has a connecting piece which is fixedly connected between the two side frame bodies and is positioned below the chair seat. The adjusting mechanism comprises a hollow tube, a torsion spring, an inserting rod and a pulling component. The hollow pipe extends forwards and is fixedly connected to the connecting piece. The torsion spring is axially and limitedly arranged in the front end of the hollow tube, and two supporting sections which radially extend out of the hollow tube are arranged at the two tail ends of the torsion spring. The inserted rod is tightly inserted into the hollow tube by the torsion spring, and the front end of the inserted rod penetrates out of the hollow tube and is pivoted on the bottom surface of the chair seat. The pulling assembly can be operated to twist the two support sections to enable the torque spring to loosen the inserted rod, so that the chair seat can move forwards and backwards, and the sitting and leaning angle between the chair seat and the chair back can be changed.

Description

The chair tool of adjustable leaning angle

[technical field]

The utility model relates to a kind of chair tool, particularly relates to the chair tool that angle can adjust between a kind of seat support for the human body seating, the chair back.

[background technology]

General chair tool for the human body seating, often the difference with function has dissimilar designs, for example have with meet design that ergonomics is the requirement emphasis, have with light and handy easy for the design that requires, also have the design of attaching most importance to for the angle angle of human body seating between the seat support and the chair back adjusting.

Can adjust the chair tool structure of leaning angle between seat support, the chair back in the past, on the whole be to have seat support that a level sets up, to be installed in the chair back above the rearward end of this seat support with predetermined adjustable included angle wholely, and the two left and right sides that are installed in this seat support and the chair back respectively are used for standing in a ground bogie side frame, and each bogie side frame has a side that is installed in this seat support and is used for standing on a ground supporter, and an armrest body that is installed in a top of this supporter.And the seat support of this type of chair tool, the chair back have the whole structure design of adjustable included angle, nearly all be along its length direction locking one lengthy motion picture shape iron plate in addition for a long time in the bottom of each armrest body, be used for that top for supporter is pivoted and can before and after adjust displacement, seldom see breakthrough design.

[utility model content]

The purpose of this utility model is to provide a kind of adjustable leaning angle and the very special chair tool of adjustment mode.

The chair tool of the adjustable leaning angle of the utility model includes a chair frame group body, one in front and one in back is assembled in a chair back and a seat support on this chair frame group body with predetermined angle, and one is used for supporting the guiding mechanism that this seat support also can change the leaning angle between the chair back and seat support; This chair frame group body includes chair frame on, and chair frame has two side frame body that the first from left right septum is provided with on this, and a connector that is fixed between this two side frame body bottom; This chair back erectly is journaled between the rear, upper end of this two side frame body with the nearly middle part of its dual-side; This seat support flatly is journaled into a bottom of this chair back with the one rearward end; Be characterized in: this guiding mechanism is to be installed in this seat support below, includes a hollow tube, a torque spring, an inserted link and a drawing assembly.This hollow tube is to be fixed in this connector and to extend forward, has one and is positioned at the one leading section and runs through the perforation of its tube wall.This torque spring has the coiling section of a pre-fixing turn of coiling and radius, and two respectively by two terminal sections of supporting toward the outer radials extension of this coilings section, the perforation of this hollow tube of this coiling Duan Shenjing and the axle be contained in the hollow tube, this two section of supporting is that correspondence passes this perforation, and respectively by the front and back ends place of axial limiting in this perforation, when the simultaneously stressed past coiling direction in contrast to this coiling section of this two section of supporting reversed relatively, this coiling section was made radius enlarge by twisting; But this inserted link axial stretching is plugged in this hollow tube with displacement, and passes the coiling section of this torque spring and by tight Shu Dingwei, and a leading section of inserted link passes the leading section bottom surface that this hollow tube and pivot dress are supported on this seat support; This drawing assembly is used for this two section of supporting of operation driving toward reversing relatively in contrast to coiling direction.

Adopt such scheme, when this drawing assembly of operation drives this two section of supporting, this coiling section radius is enlarged and when removing tight bundle power to this inserted link, but the displacement before and after the inserted link bearing of trend of this this inserted link of seat support interlock, and change leaning angle between the seat support and the chair back.

[description of drawings]

Be elaborated below by preferred embodiment and accompanying drawing chair tool to the adjustable leaning angle of the utility model, in the accompanying drawing:

Fig. 1 is a face upwarding stereogram, and an embodiment of the utility model chair tool is described;

Fig. 2 is the lateral plan of this embodiment;

Fig. 3 is the sectional perspective enlarged drawing of a guiding mechanism among Fig. 1;

Fig. 4 is the side cutaway view of this guiding mechanism among Fig. 3;

Fig. 5 is the positive side cutaway view of this guiding mechanism among Fig. 3, illustrates that an inserted link is by the tight Shu Dingwei of a torque spring;

Fig. 6 one is similar to the view of Fig. 5, and the radius that this torque spring is described enlarges and unclamps this inserted link;

Fig. 7 is the face upwarding section of the drawing assembly among Fig. 1;

Fig. 8 one is similar to the view of Fig. 2, and the state after a seat support is passed forward is described.

[specific embodiment]

As shown in Figures 1 and 2, one embodiment of the utility model chair tool includes a chair frame group body 1, one in front and one in back is assembled in a chair back 4 and a seat support 5 on this chair frame group body 1 with predetermined angle, and one is used for supporting the guiding mechanism 6 that this seat support 5 also can change the leaning angle of 5 of the chair back 4 and seat supports.

This chair frame group body 1 has a following chair frame 2 that is used for standing on ground, and a last chair frame 3 that rotatably is built up on this time chair frame 2.The structure of whole chair frame group body 1 for example also can not established this time chair frame 2, and directly stand on the ground with chair frame 2 on this not as limit.This time chair frame 2 has a base 21 that stands on ground, and one uprightly is arranged on these base 21 central authorities and the axle sleeve 22 of projection up.

Should go up two upstanding side support bodys 31, that chair frame 3 has the first from left right septum setting and be fixed in the rectangular-shaped skeleton frame 33 that elongated rod shape connector 32, between a bottom of this two side frame body 31 is consolidated in a middle position rear side of this connector 32, and one be fixed in this skeleton frame 33 and the upright axostylus axostyle 34 of projection down, this axostylus axostyle 34 rotatably is inserted in the axle sleeve 22 of this time chair frame 2, and making on the whole, chair frame 3 rotatably is built up in down on the chair frame 2.The shape of this two lateral body 31 can have bigger variability, be not provided with at whole chair frame group body 1 under the situation of aforementioned chair frame 3 down, can be corresponding and stand on the ground by the variation that this two side frame body 31 is made suitable shape, each side frame body 31 in the present embodiment is to consist of example with the upper and lower hack lever 311,312 by affixed one to explain.This time hack lever 311 is slightly fixed with its bottom and this connector 32 obliquely forward, and hack lever 312 is to be fixed in this time hack lever 311 tops with the one leading section on this, and arcuation extends backward, can provide seating person's hand to support, help on it.

This chair back 4 is erectly with both sides, the nearly middle part of one, is journaled on the rearward end of last hack lever 312 of this two side frame body 31 by one first support body 41 respectively.

This seat support 5 borrows one second support body 51 to be journaled into a bottom of this chair back 4 respectively flatly with one rearward end both sides.

This guiding mechanism 6 is installed in this seat support 5 belows, includes a hollow tube 61, a torque spring 62, an inserted link 63 and a drawing assembly 64.

Cooperate shown in Fig. 3,4, this hollow tube 61 is connector 32 central authorities that are fixed in chair frame 3 on this toward the front upper place with extending, this hollow tube 61 has a tube body 611 and two fixed interval and is inserted into lining 612 in this tube body 611, this tube body 611 has one and is positioned at the one leading section and runs through the rectangle perforation 613 of its tube wall, and making this perforation 613 offer the position is between 612 of this two linings.

This torque spring 62 has the coiling section 621 of a pre-fixing turn of coiling and radius, and two respectively by two terminal sections of supporting 622 toward the outer radials extension of this coilings section 621,623, this coiling section 621 stretches into by the perforation 613 of this tube body 611 and axle is contained in the tube body 611, this two section of supporting 622,623 correspondences pass this perforation 613, and respectively by axial limiting in this perforation 613 before, rear end, before present embodiment makes aforementioned two linings 612 extend in this perforation 613 in the design, rear end makes this two section of supporting 622,623 stopped and axial limiting by this two lining 612.

But these inserted link 63 axial stretchings are plugged in the tube body 611 of this hollow tube 61 with displacement, and pass described lining 612 and this torque spring 62, and by the coiling section 621 tight Shu Dingwei of torque spring 62, and a leading section of inserted link 63 is to pass this hollow tube 61 and with dashed forward 52 in a pair of pivot ear established of the leading section bottom surface that one the 3rd support body 631 is journaled into this seat support 5, and can provide seat support 5 support forces.

As seen from Figure 5, in inserted link 63 is plugged in the coiling section 621 of this torque spring 62, and two sections of supporting 622,623 are during driver under stress, and this coiling section 621 is tightly restrainted in inserted link 63, make the inserted link 63 can't be with respect to hollow tube 61 axial stretching displacements.And when these two sections of supporting, 622,623 stressed past coiling directions in contrast to this coiling section 621 reverse relatively, to twist this coiling section 621 enlarges its radius, become state as shown in Figure 6, the internal diameter of the section 621 of reeling this moment is obviously greater than inserted link 63 external diameters, but in these state lower plunger 63 axial displacement starts, as for the running of reversing of this two section of supporting 622,623, be to realize by the driving of aforementioned drawing assembly 64.

This drawing assembly 64 mainly is to drive two sections of supporting 622,623 of this torque spring 62 toward reversing relatively in contrast to coiling direction in order to be used for, the structure design that can realize this effect is a lot of, general seeing as bicycle, locomotive, perambulator, wheelchair ... in brake assemblies with brake gear.

As shown in Figure 1, the drawing assembly 64 of present embodiment has: a holder 65, a sleeve pipe 66, leader 67, and a drag-line 68.

Cooperate shown in Fig. 6,7, this holder 65 is to be packed in aforementioned seat support 5 bottoms.One inner end 661 of this sleeve pipe 66 is to be cemented in this holder 65 edges, one outer end 662 (being found in Fig. 1 and Fig. 6) is resisted against the section of supporting 623 of aforementioned torsion spring 62, that is to say the inside and outside end the 661, the 662nd of sleeve pipe 66, is resisted against 623 of the holder 65 and the sections of supporting respectively limitedly.

This handle 67 is to be fixed on fastenedly on this holder 65 with one the 4th support body 671, and installing the time is to make an outer end of handle 67 protrude seat support 5 outsides, pulls to make things convenient for seating person to operate floppily with hand.

This drag-line 68 is that two ends are located in this sleeve pipe 66 highlightedly, after one inner end 681 passes the inner end 661 of sleeve pipe 66, is fixed on a proximal edge position of this handle 67 with can being subjected to drawing.After one outer end 682 of this drag-line 68 passes the outer end 662 of sleeve pipe 66, can draw two sections of supporting 622,623 that are bound up on this torque spring 62 with holding, the bind mode of this outer end 682 and two sections of supporting 622,623, be by curved respectively coiled one spacing collar 624,625 of an end of this two section of supporting 622,623, make this outer end 682 successively pass spacing collar 625,624, and then in terminal locking one nut body 683 of this outer end 682, and these nut body 683 volumes can't pass through spacing collar 624 greatly.

Like this, when driving this drag-line 68 of drawing when the handle 67 of operating this drawing assembly 64, to be shown in Figure 6 as described above, produce to be equal to by the outer end 662 of this nut body 683 and this sleeve pipe 66 and push this two section of supporting 622 in opposite directions, 623 effect, make this two section of supporting 623,624 produce the running of reversing relatively toward in contrast to this coilings section 621 coiling directions because of stressed, radius of section 621 will enlarge and removed tight Shu Li to this inserted link 63 so should reel, be sitting in the seating person on the chair tool this moment, pass the seat support 5 that supported by this inserted link 63 before and after can taking advantage of a situation, seat support 5 just can be along displacement before and after the bearing of trend of this inserted link 63, during seat support 5 front and back displacements, the bottom that will drive the chair back 4 forward, back displacement, making the whole chair back 4 serves as that axle is made pivot pendulum with first support body 41, thereby changes the leaning angle of 5 of the chair back 4 and seat supports.Be the state after seat support 5 displacement forward as shown in Figure 8, and be provided with because the hollow tube 61 of this guiding mechanism 6 is to be fixed in obliquely up on this connector 32, therefore when the leading section of seat support 5 is passed forward, with respect to the chair back 4 is slightly toward upwarping, and the interlock chair back 4 makes the one upper end swing toward the back lower place, therefore whole seat support 5 and the leaning angle that the chair back 4 is constituted more can possess to have and can allow the comfortable backward special-effect of lying of facing upward of seating person.

In addition when the drawing gravitation removed drag-line 68, whole torque spring 62 can be borrowed the reverse elastic force of being put aside by twisting, and returns back to the state of tight bundle inserted link 63 location, and while handle 67 also can be resetted by interlock.

Take a broad view of above-mentioned, because present embodiment is adjusted the function mode and structure design of leaning angle about guiding mechanism 6, be to provide the function that grasps the location by its torque spring 62, and guide the direction of displacement of the seat support 5 and the chair back 4 by hollow tube 61 and inserted link 63, in addition, slightly upwarped by guiding, and seating person can be provided the comfortable backward special-effect of lying of facing upward.

Claims (6)

1. A chair with an adjustable sitting angle, comprising a chair frame assembly, a chair back and a seat seat assembled on the chair frame assembly at a predetermined angle one after the other, and a seat for supporting The chair seat can also change the adjustment mechanism of the sitting angle between the chair back and the seat seat; the chair frame assembly includes an upper chair frame, and the upper chair frame has two side frames arranged at intervals from left to right, and a The connecting piece fixedly connected between the lower ends of the two side frames; the back of the chair is upright and pivotally mounted between the upper ends of the two side frames near the middle of the two sides; The rear end is pivotally mounted on the lower end of the chair back, and is characterized in that: The adjustment mechanism, installed under the seat, includes a hollow tube, a torsion spring, an insertion rod and a pulling component; The hollow tube, which is fixedly connected to the connecting piece and extends forward, has a perforation located at a front end thereof and passing through the tube wall; The torsion spring has a winding section with a predetermined number of turns and a radius, and two supporting sections extending radially outward from the two ends of the winding section respectively, and the winding section extends through the perforation of the hollow tube While the shaft is installed in the hollow tube, the two supporting sections pass through the perforation correspondingly, and are respectively axially limited at the front and rear ends of the perforating hole. When the winding direction is relatively reversed, the winding section is twisted to expand the radius; The insertion rod is axially telescopically displaceable and inserted into the hollow tube, and passes through the winding section of the torsion spring to be tightened and positioned, and a front end of the insertion rod passes through the hollow tube and is pivotally supported on the underside of a front end of the seat; The pulling assembly is used to drive the two supporting segments to twist relative to the winding direction. 2. The chair with adjustable sitting angle as claimed in claim 1, characterized in that: the hollow tube has a tube body and two bushes fixedly inserted in the tube body at intervals, and the perforation is opened in the tube body. On the body and between the two bushes. 3. The chair with adjustable sitting angle as claimed in claim 2, wherein the two supporting sections of the torsion spring are axially blocked and limited by the two bushings respectively. 4. The chair with adjustable sitting angle as claimed in claim 1, characterized in that: the chair frame assembly also includes a lower chair frame, and the lower chair frame has a base for standing on the ground and a stand A shaft sleeve arranged in the center of the base and protruding upward; the upper chair frame of the chair frame assembly also has an upright shaft fixed in the center of the connecting piece, and the shaft is rotatably inserted in the lower chair in the bushing of the rack. 5. The chair with adjustable sitting angle according to claim 1, characterized in that the pulling assembly has: A fixed seat, fixed on the bottom of the seat; a sleeve, the inner and outer ends of which are respectively limited between the fixing seat and one of the supporting sections of the torsion spring; A handle is rotatably fixed on the fixing seat; A cable is threaded in the casing, an inner end of the cable passes through the casing and can be pulled and fixed on the handle, and an outer end of the cable passes through the casing and is pulled When pulling, the two supporting sections of the torsion spring are twisted in opposite directions to enlarge the radius of the winding section. 6. The chair with adjustable sitting angle as claimed in claim 1, characterized in that: the hollow tube of the adjustment mechanism is fixedly connected to the connecting piece in an upwardly inclined manner.

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