CN100556339C - Backrest can move the chair of regulating automatically - Google Patents
Backrest can move the chair of regulating automatically Download PDFInfo
- Publication number
- CN100556339C CN100556339C CNB2004800141875A CN200480014187A CN100556339C CN 100556339 C CN100556339 C CN 100556339C CN B2004800141875 A CNB2004800141875 A CN B2004800141875A CN 200480014187 A CN200480014187 A CN 200480014187A CN 100556339 C CN100556339 C CN 100556339C
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- hydraulic
- backrest
- user
- chair
- cylinder
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
- A47C1/03272—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs
- A47C1/03274—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs of torsion type
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03255—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest with a central column, e.g. rocking office chairs
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03294—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest slidingly movable in the base frame, e.g. by rollers
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/02—Seat parts
- A47C7/35—Combinations of different types of springs; Adjustable springs; Attachment of springs to other springs or to the base frame ; Springs for seat parts not provided for in other groups of this subclass
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/62—Accessories for chairs
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- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Chairs Characterized By Structure (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
Abstract
The present invention relates to the technology that a kind of backrest can move the chair of regulating automatically.Chair of the present invention possesses cushion, backrest and supporting leg, by constituting as the lower part: upper plate, middle plate and lower plate, they are under the state that keeps being arranged between cushion and the supporting leg, according to the interval of setting, towards the above-below direction setting; The hydraulic booster spare that constitutes by the hydraulic booster cylinder, between plate and the lower plate, move at the stressed elastic buffer that carries out, promptly during wherein the hydraulic booster cylinder is set at from above-below direction, when the user is sitting on the cushion, based on user's body weight, middle plate is transported to the reciprocating action cylinder that is arranged between upper plate and middle plate by elastic compression with hydraulic pressure release, simultaneously, when the user when chair is stood, recover original state from compressive state, and absorb the hydraulic pressure that is transported in the said cylinder; The guiding case, it between upper plate and middle plate, towards fore-and-aft direction be fixed in plate above; The reciprocating action cylinder, it is horizontally placed on the inside of guiding case, when the hydraulic booster cylinder of hydraulic booster spare discharges hydraulic pressure, along with the inflow of hydraulic pressure, piston rod is advanced, when the time from hydraulic booster cylinder recovery hydraulic pressure, along with the release of hydraulic pressure, piston rod is retreated; The backrest moving member that constitutes by master lever, it is by the mobile slotted hole of the guiding case left and right sides, installed by level, connect with the direction of guiding case with square crossing, it is connected to the front end of reciprocating action cylinder piston rod again simultaneously, along with the front and back action of piston rod, in the moving range of the mobile slotted hole that guides case, advance or backward movement; Back rest, it is connected to the two ends of the master lever of backrest moving member, together advances or backward movement with master lever; Secondary control stick, it is arranged at the rear between upper plate and the middle plate movably, and advance or backward movement with back rest being connected under the state of back rest in its two ends.
Description
Technical field
The present invention relates to the technology that a kind of backrest can move the chair of regulating automatically; in more detail; even relating to a kind of user who is provided with the chair of the supporting leg that can move on ground, is installed in the various chairs such as cushion of automotive interior to removable adjusting is sitting on the cushion with the posture that oneself back does not lean against backrest; the backrest of chair moves automatically according to user's body weight; and then support user's back; the user is sitting on the chair with the posture of rectifying, effectively protects user's vertebra.
Background technology
On the office of school, continuation class, library or public institution, enterprise and meeting room and other places, utilize the people of study of desk or desk or work all can be sitting in study or work on the chair, and, all be provided with backrest on most of chair for the user is felt comfortably cool.
Generally speaking; the backrest of chair plays and supports the back be sitting in the user on the chair, makes the user be sitting in the effect of having a rest on the chair with comfortable posture, and backrest also has the function of the vertebra that supports the back that is sitting in the user on the chair, protection user simultaneously.Therefore, when being sitting on the chair, buttocks is placed on the rear side of cushion, and the posture that leans against on the backrest with the back takes a seat, and just can protect the correct body position of vertebra at last.
And, in order to protect user's vertebra safely, the backrest that needs to adopt the ergonomics structural design and make chair.
Conventional chair has the chair that utilizes elastic force backrest can be moved backward, and backrest itself is formed by two backrests separation, from the chair of the multiple structures such as two backrest structures at the supported on both sides back of vertebra.
Chair according to the routine techniques making, no matter the user is sitting in which position on the seat cushions, backrest is remaining fixing state, therefore the user will be sitting on the chair with the posture of rectifying, have only the dark recess in rear portion that buttocks is placed on cushion to sit down, could promptly can sit down leaning against on backrest with the posture of rectifying, if but the user sits down centre or front portion that buttocks is placed on cushion, just can't correctly the back be leaned against on the backrest.This shows,, will bring burden, make the user be easy to feel tired, cause that easily vertebra is unusual, that is, cause diseases such as spinal disc to vertebra if under the state that posture is not rectified, be sitting in study or work on the chair for a long time.
But, no matter be to be sitting in the student who learns on the chair, or the people of work, most people are placed on buttocks the rear side of cushion, but are placed on the mid portion of cushion.If be sitting on the chair for a long time with such posture and work, can't lean against on the backrest safely upper body is comfortable, thus feel tired easily, even, cause diseases such as the sharp dish of waist because of bring serious burden to vertebra.
Summary of the invention
As above problem proposes in order to solve just in the present invention, and its objective is provides a kind of chair that can make the user remain proper sitting posture.In detail; even buttocks is not placed on the rear side of cushion when the user takes a seat; the backrest of chair is not carrying out under the situation of any special operation; automatically move forward; be close to user's back; make the user keep to protect the sitting posture of rectifying of vertebra; and move forward at backrest; be close under user's the state at back; if the user moves body forward, backrest still can move forward automatically, even and the user be sitting on the chair health toward hypsokinesis; backrest can not move backward yet, but supports user's back safely.
For this reason, chair of the present invention possesses cushion, backrest and supporting leg, by constituting as the lower part: upper plate, middle plate and lower plate, they are under the state that keeps being arranged between cushion and the supporting leg, and the interval according to setting is provided with by the above-below direction shift intervals; The hydraulic booster spare that constitutes by the hydraulic booster cylinder, between plate and the lower plate, move at the stressed elastic buffer that carries out, promptly during wherein the hydraulic booster cylinder is set at from above-below direction, when the user is sitting on the cushion, based on user's body weight, middle plate is transported to the reciprocating action cylinder that is arranged between upper plate and middle plate by elastic compression with hydraulic pressure release, simultaneously, when the user when chair is stood, recover original state from compressive state, and absorb the hydraulic pressure that is transported in the said cylinder; The guiding case, it between upper plate and middle plate, towards fore-and-aft direction be fixed in plate above; The reciprocating action cylinder, it is horizontally placed on the inside of guiding case, when the hydraulic booster cylinder of hydraulic booster spare discharges hydraulic pressure, along with the inflow of hydraulic pressure, piston rod is advanced (appearance), when the time from hydraulic booster cylinder recovery hydraulic pressure, along with the release of hydraulic pressure, make piston rod retreat (submerging); The backrest moving member that constitutes by master lever, it is installed by level by the mobile slotted hole of the guiding case left and right sides, connect with the direction of guiding case with square crossing, it is connected to the front end of reciprocating action cylinder piston rod again simultaneously, along with the front and back action of piston rod, in the moving range of the mobile slotted hole that guides case, advance or backward movement; Back rest, it is connected to the two ends of the master lever of backrest moving member, together advances or backward movement with master lever; Secondary control stick, it is arranged at the rear between upper plate and the middle plate movably, and advance or backward movement with back rest being connected under the state of back rest in its two ends.
The feature of hydraulic booster spare is by constituting as the lower part: be marked with a kind of fluid in oil or the gas in the hydraulic booster cylinder, the hydraulic booster cylinder passes through hydraulic line, supply the hydraulic pressure to the reciprocating action cylinder of backrest moving member, or reclaim hydraulic pressure from the reciprocating action cylinder; Hydraulic line, hydraulic line are provided with the pressure-regulating valve of the discharge-amount that is used to regulate hydraulic pressure, and the hydraulic control valve that is used to open and close hydraulic line, control hydraulic flow.
The backrest moving member comprises following several sections: shaft support part, and it is a benchmark with the guiding case, is fixed on the both sides of the left and right sides of guiding case near mobile slotted hole; The action axle, it runs through the mobile slotted hole that guides case, and two ends rotatably are arranged on the shaft support part; Brake, it is set at the inside of guiding case with the state of penetrating action axle; The roller support component is fixed a pair of respectively in the both sides of master lever; Guide wheel, it rotatably is arranged on the roller support component, and supports parallel and the tab-like guide rail that is formed in the upper plate two bottom sides along with the action of master lever, move along guide rail simultaneously.
Backrest moving member brake comprises following several sections: roller, and it is set at roller and is provided with in the hole, can be under the state that keeps with the interlock of action axle, advance or retreat along the movable passageway of the lower central that is formed on the guiding case; Retreat braking with rotating tooth bar, it is formed at above the front side of brake and the rear side bottom surface with heeling condition, be used to stop the brake running.
In addition, the braking that retreats that is provided with respectively with brake of the inboard upper and lower surface of guiding case makes retreating and the braking stationary rack that advances of effect that brake shuts down with rotating the tooth bar interlock, playing.
In addition, by constituting as the lower part: rotating shaft, it is set at the end portion of back rest and a little more than the position of cushion, can rotates; The perception lower back, it is independent of backrest, be set on the rotating shaft, when the user is not sitting on the chair or user's buttocks and rear side when producing certain space, towards the cushion side, with outstanding state rotation, and when the user was sitting on the chair, back rest forwards moved, and this moment, it arrived at before user's the back at backrest, the leading buttocks that arrives the user, the driven rotary axle rotates thereupon when rearward retreating rotation; The brake control wire, it, is delivered to its revolving force on the brake when rotating shaft rotate with the form setting of action axle one end of the side end that connects rotating shaft and master lever, brake is braked or brake off moves.
In addition, by constituting as the lower part: rotating shaft, it is set at the end portion of back rest and a little more than the position of cushion, can rotates; The perception lower back, it is independent of backrest, be set on the rotating shaft, when the user is not sitting on the chair or user's buttocks and rear side when producing certain space, towards the cushion side, with outstanding state rotation, and when the user is sitting on the chair, back rest forwards moves, this moment, it arrived at backrest before user's the back, the leading buttocks that arrives the user, and the driven rotary axle rotates thereupon when rearward retreating rotation; Hydraulic control line, it is used to open and close hydraulic control valve by with the side end that connects rotating shaft and the state setting of the hydraulic control valve on the hydraulic line.
In sum, when using the present invention on the various chairs of band backrest, even the user is sitting in the mid portion of cushion, backrest also can move automatically and advance, and supports user's back, makes the user to be sitting on the chair rightly naturally.Therefore; no matter the user is sitting in which position of cushion; can make the user remain back and lean against the sitting posture of rectifying on the backrest; protect vertebra for being sitting in the people who learns on the chair or work for a long time; be of value to healthy; especially on the occasion of growing up budding children, and adult or all old persons use and be suitable for chair of the present invention, more can embody its effectively good result of protection vertebra.
Brief Description Of Drawings
Fig. 1 and Fig. 2 are front of the present invention and lateral plan,
Fig. 3 is the A-A line sectional view of Fig. 1,
Fig. 4 seizes the local detachment stereogram that major part shows for the present invention is described,
Fig. 5 is for the present invention is described, dismounting cushion and last grillage, and the plane of the configuration status of each member and the connection status between back rest in the grillage in the demonstration,
Fig. 6 is the B-B line sectional view of Fig. 3,
Fig. 7 to Fig. 9 is a backrest operating state sectional view of the present invention, and wherein: Fig. 7 is the state of user before sitting on the chair, when Fig. 8 is sitting on the chair for the user, the state that back rest moves, when Fig. 9 moves for back rest, the control operating state of bottom backrest, and
Figure 10 is the sectional view of another embodiment of the present invention.
Concrete embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described.
Fig. 1 and Fig. 2 are front of the present invention and lateral plan; Fig. 3 is the A-A line sectional view of Fig. 1; Fig. 4 seizes the local detachment stereogram that major part shows for the present invention is described; Fig. 5 is for the present invention is described, dismounting cushion and last grillage, the plane of the configuration status of each member and the connection status between back rest in the grillage in the demonstration; Fig. 6 is the B-B line sectional view of Fig. 3; Fig. 7 to Fig. 9 is a backrest operating state sectional view of the present invention; Figure 10 is the sectional view of another embodiment of the present invention.
Label 1 expression chair, chair 1 is made of the supporting leg 13 that the cushion 11 that is available for users to sit, the backrest 12 and being used to that supports user's back support cushion.And supporting leg 13 comprises the roller of highly regulating cylinder and supporting on the ground.In addition, as shown in Figure 2, the both sides of cushion 11 are provided with the handrail that is used to support arm.
The cushion 11 of chair 1 is the same with conventional chair, adopted the structure that can make the user be seated comfortably in top, the supporting leg 13 of the chair also chair with routine is the same, not only can regulate height, also have roller, the user is sitting on the chair moves freely.
Chair of the present invention, its structure is as follows: because possess under the state that utilize to keep being arranged between cushion 11 and the supporting leg 13 according to the septal surface of the setting upper plate 2a that is provided with of direction up and down, middle plate 2b and lower plate 2c are provided with the back rest 3 of backrest 12, when the user sits on the centre position of cushion 11 or front side under the back does not lean against state on the backrest, even do not operate especially, backrest 12 also will forwards move automatically and advance, back up to the contact user, and work as the user and do not operate especially, not mobile buttocks when keeping being sitting in the state on the cushion, backrest 12 does not move when just upper body being turned forward, when the user when cushion is stood up, backrest 12 moves automatically and retreats, and recovers original state.
Be described as follows by assembly:
At first, between middle plate 2b and lower plate 2c, hydraulic booster spare 4 is set, and hydraulic booster spare is made of the hydraulic booster cylinder 41 that the front end of the cylinder main body of plate 2b bottom in being set at and piston rod is set at above the lower plate 2c.And, hydraulic pressure has been filled in the inside of hydraulic booster cylinder, therefore when the user is sitting on the cushion 11, body weight (approximately more than the 15Kg) based on the user, carry out by the action of hydraulic line 42 hydraulic pressure compression and release, and when stand up when being increased to loading on the hydraulic booster cylinder originally and disappearing the hydraulic pressure that discharges in the time of will absorbing compression, the action that recovers original state from cushion 11 because of the user.At this moment, be filled into hydraulic pressure in the hydraulic booster cylinder 41 and can adopt a kind of fluid in oil or the gas, perhaps use oil and gas simultaneously.
In addition, the inside of cylinder block is provided with back-moving spring 43, makes hydraulic booster cylinder 41 more promptly realize compression and recover moving.And play that the hydraulic line 42 of effect that the hydraulic pressure that discharges when hydraulic booster cylinder 41 carried out compressed action is transported to the reciprocating action cylinder 52 of backrest moving member 5 is provided with the pressure-regulating valve 44 of the discharge-amount that is used to regulate hydraulic pressure and by opening and closing hydraulic line 42, the hydraulic control valve 45 of control hydraulic flow.
At this moment, as long as hydraulic control valve 45 adopt can realize opening and closing the valve of the purpose of hydraulic line 42, can select the valve of frame for movement such as ball valve for use, also can use the valve of electrical structure such as magnetic valve.
In addition, middle plate 2b and lower plate 2c are supported by interior a plurality of upper and lower part stay pipe 47a and the 47b that establishes spring 46, and the upper end of upper support pipe 47a is attached to the bottom of middle plate 2b, the lower end is wrapped in attached to the lower support pipe 47b above the lower plate 2c, based on spring 46 up and down direction carry out elastic buffer action.As above each upper and lower part stay pipe 47a that constitutes of structure and 47b and hydraulic booster cylinder 41 plate 2b in the resiliency supported together.
Secondly, between upper plate 2a and middle plate 2b, backrest moving member 5 is set.
In addition, the both sides of master lever 53, promptly approach when being benchmark to be respectively equipped with a pair of shaft support part 531 on the position of mobile slotted hole 511 both sides with guiding case 51, and apart from being respectively equipped with a pair roller support component 532 on the mobile slotted hole 511 of the both sides position far away.And the two ends of horizontally disposed, as to run through mobile slotted hole 511 action axle 54 are connected on the shaft support part 531 with fixers such as nuts.Simultaneously, paired roller support component 532 is provided with the guide wheel 55 that can rotate freely, and guide wheel 55 can roll by the parallel guide rail 21 that protrudes in upper plate 2a bottom.
In addition, the mid portion that is positioned at the action axle 54 of guiding case 51 inside is provided with moving a brake 56 of 54 rotations, be provided with rollers 562 that drive 54 rotations of action axle with the morphogenetic roller installing hole 561 that vertically runs through brake 56, and roller can move forward and backward along face forward, the movable passageway 512 that is formed on the bottom surface of guiding case 51 with long groove form.
In addition, the upper and lower surface of guiding case 51 is respectively equipped with the braking that retreats of indention shape and brakes with stationary rack 514 with advancing with stationary rack 513, be provided with along the inclined plane above the front side of brake 56 and below the rear side and form, respectively with retreat braking and retreat braking with rotating tooth bar 563 and advancing to brake and use rotation tooth bar 564 with what stationary rack 514 kept interlocks or releasing orientation with the stationary rack 513 and the braking of advancing.These stationary racks and rotation tooth bar, keep levels and stop or when mobile when meeting brake 56, unclamp mutually, the permission brake moves forward and backward, on the contrary, when when brake 56 rotates according to clockwise direction, observing picture, the rotation tooth bar below above the place ahead and the rear and the stationary rack interlock mutually of the top and bottom that guide case 51.When the mutual interlock of stationary rack of the rotation tooth bar of brake 56 and guiding case, brake 56 direction forwards, backwards moves, and promptly becomes halted state.And the master lever 53 that possess the action axle 54 that is used to support brake 56 this moment also can't move towards fore-and-aft direction, becomes halted state.As mentioned above, when brake 56 and master lever 53 stopped, backrest moving member 5 itself also will be in halted state.
In addition, be provided with to the inner elastomeric of reciprocating action cylinder 52 and be used for back-moving spring 521 that piston is set back.
In addition, the rear side of above-mentioned master lever 53 is provided with the secondary control stick 6 that moves with master lever.
In addition, secondary control stick is arranged at than the slightly high position of height to guiding case 51, the rear of plate 2b therefrom according to the state parallel with master lever 53, and with fixed mount 61 rotatably mode be attached under the support of the supporting rail 63 above the rear of support wheel 62 plate 2b in being fixed on of two bottom sides of secondary control stick 6, direction is floated forwards, backwards.
In addition, upper plate 2a and middle plate 2b are according to the certain intervals secure bond, be provided with a plurality of column type linings 57 between upper plate 2a and the middle plate 2b for this reason, and be provided with the hold-down screw 58 that runs through its center in each lining 57, upper plate and middle plate just are being to use nut to fix these hold-down screws and are realizing combination.In addition, if the guiding case 51 in being set at above the plate 2b above setting be used for supporting the support component of upper plate 2a mid portion, just can prevent from upper plate 2a to be hung downwards because of user's body weight.
Below back rest 3 is described.
The upper part of back rest 3 is outstanding extends, so that support the back that is sitting in the user on the chair, and its end portion extends to the left and right sides of chair 1, and and be fixed to the two ends of master lever 53 and secondary control stick 6 simultaneously by fixed parts such as screws.
Therefore, back rest 3 move, and secondary control stick 6 is along with back rest 3 moves when the master lever 53 of backrest moving member 5 is mobile forwards, backwards thereupon.
In addition, the downside of the backrest 12 in the back rest 3 is provided with perception lower back 7, it is set on the rotating shaft 71, and rotating shaft rotatably is horizontally placed on the end portion of back rest 3, its position is a little more than above cushion 11 rears, and perception is connected on the rotating shaft 71 according to mode rotatably with lower back 7.
In addition, perception runs through the combinations of states of perception with rear end, lower back 7 bottom with lower back 7 with rotating shaft 71, its objective is, when the user does not use chair, forwards tilt, wait under the user is sitting in state on the chair to keep the state more outstanding than backrest 12, back rest moves when advancing, along with the buttocks of perception, prepare the state that rotation rearward retreats with lower back conflict user.Therefore, when the user was not sitting on the cushion 11, perception according to own wt, was a basic point with rotating shaft 71 with lower back 7, and rotation is forwards tilted with the outstanding state of the upper part face forward of lower back 7 with perception.
In addition, the one or both ends of rotating shaft 71 are provided with torque spring 72, so that when standing up after the user is sitting on the chair, help perception tiltedly to rotate with lower back 7 inclination forwards.
In addition, an end of rotating shaft 71 and be arranged at an end of the control wire 541 on the action axle 54 of backrest moving member 5 links to each other based on brake control wire 8a.These control wires 541 are rotatably twisted in a side of action axle 54, and the one end is connected on the brake control wire 8a, and the other end is through on the hole of brake 56 front.Therefore, when brake control wire 8a spurred an end of control wire 541, the other end made brake 56 according to the rotation of (when observing picture) clockwise direction.And the hydraulic control valve 45 of the other end of rotating shaft 71 and hydraulic booster spare 4 links to each other by hydraulic control line 8b.
Aforesaid brake control wire 8a and hydraulic control line 8b adopt and are easy to bending, difficult winding and strength transmission steel wire rope formation smoothly.The end of brake control wire 8a is connected in outstanding the 1st projection 711 that is formed on rotating shaft 71 1 ends, the other end is connected in an end that rotatably twists in the control wire 541 on the action axle 54, the end of hydraulic control line 8b is connected in the 2nd projection 712 of the other end that is formed on rotating shaft 71, and the other end is connected on the switching control stick of hydraulic control valve 45.
Aforesaid hydraulic control valve 45 is so long as it is promptly applicable the hydraulic pressure that produces from hydraulic booster cylinder 41 can be fed to the valve of reciprocating action cylinder 52 or cut-out supply.
In addition, one end of the rotating shaft 71 of brake control wire 8a on being arranged on back rest 3 passes the bullport on two guidance spheres 713714 that are positioned at above backrest moving member 5 master levers 53 1 sides, based on can be the as required crooked structure that is provided with, connecting rotating shaft 71 and control wire 541, and hydraulic control line 8b is being connected the switching control stick of rotating shaft 71 and hydraulic control valve 45 by with can be between the switching control stick of the end of rotating shaft 71 and hydraulic control valve 45 crooked structure setting.
Here, control wire 541 is a metal wire, is arranged on the action axle 54 according to rotatable mode.
In addition, the effect of each wire rod is when rotating shaft 71 rotations, to rely on its revolving force, rotation control wire 541 and hydraulic control valve 45.Promptly, to rotate rearward in picture with lower back 7 be when rotating according to clockwise direction along with perception at rotating shaft 71, if is benchmark with picture with reference to figure 9, under the situation of brake control wire 8a, the control wire 541 of backrest moving member 5 makes brake 56 rotate to clockwise direction, and then make the braking that retreats, advances of brake 56 brake usefulness stationary rack 513 and 514 interlocks with retreating, advance with rotating tooth bar 563 and 564, under the situation of hydraulic control line 8b, make the switching control stick of hydraulic control valve 45 carry out closing motion.
Simultaneously; the protected box in four sides that supports upper plate 2a, the middle plate 2b of chair 1 cushion 11 and lower plate 2c round; and the protection box has adopted the structure that supports upper and lower plates when allowing upper plate and middle plate to move up and down; so when the user sits on the chair or when chair is stood up; even upper plate and middle plate elastic compression or recovery, the protection box is in the state that covers upper plate, middle plate and lower plate all the time.
When using chair 1 of the present invention, backrest moves the effect of regulating automatically and describes below.
At first, Fig. 3 to Fig. 7 is the sectional view when not using chair 1.The perception that is set at backrest 7 downsides uses lower back 7 according to own wt, with rotating shaft 71 is basic point, and rotation forwards makes perception tilt with the outstanding state of the upper part face forward of lower back, and its lower end keeping some spaces, to avoid contacting cushion 11.For this reason, the bottom of back rest 3 is provided with rotation Control Shaft 73, and Control Shaft 73 is used to control the angle that perception is forwards rotated with lower back 7.Therefore, when back rest 3 advanced or retreats, perception was keeping not moving with cushion 11 state of contact with lower back 7.
Secondly, the operating state sectional view when Fig. 8 uses chair 1 for the user.Generally speaking, when the user of chair takes a seat, be not buttocks to be placed on the rear side of cushion 11, but be placed on the mid portion of cushion.At this moment, after the user is sitting on the cushion 11, user's body weight will act on the cushion 11, and fixed by lining 57 and hold-down screw 58 because of upper plate 2a and middle plate 2b, even the user is sitting on the cushion 11, the interval of upper plate 2a and middle plate 2b can not change yet, on the contrary, in plate 2b because of by can to lower plate 2c carry out elastic compression hydraulic booster cylinder 41 and a plurality of on, lower support pipe 47a and 47b support, based on the body weight that is sitting in the user on the cushion 11, make the hydraulic booster cylinder 41 of plate 2b in supporting and the state that a plurality of upper support pipe 47a is elastic compression, and when hydraulic booster cylinder 41 elastic compression of hydraulic booster spare 4, the hydraulic pressure that is filled in cylinder internal is released to the reciprocating action cylinder 52 of backrest moving member 5 by hydraulic line 42.The hydraulic coupling that so is transported to reciprocating action cylinder 52 is greater than the elastic force of the back-moving spring 521 of portion's resiliency supported piston head within it, the piston rod of reciprocating action cylinder 52 carries out forward motion towards the place ahead of chair, master lever 53 is forwards moved, and along with the forward motion of master lever 53, the brake 56 that is arranged at guiding case 51 inside movably also forwards moves thereupon.
As mentioned above, if the master lever 53 of backrest moving member 5 forwards moves, back rest 3 also will move thereupon, backrest 12 and perception is moved towards the back that is sitting in the user on the cushion 11 with lower back 7 advance.At this moment, perception is outstanding because of the state that tilts towards the place ahead with lower back 7, advances when back rest 3 moves, after backrest 12 arrives at user's back, and perception is with lower back 7 leading arrival users' buttocks.The buttocks that arrives at the user with the ledge of lower back 7 from perception in a flash, up to till the release of rear rotation, back rest 3 does not shut down, and advances but continue to move.When the state that is in back portion that backrest 12 arrives at the user, can't moves on, perception will be in end with lower back 7 and be the state of clockwise direction spinning movement backward in picture, simultaneously rotating shaft 71 also become towards with the state of perception with the identical direction rotation of lower back 7.
As mentioned above, when rotating shaft 71 rotations, will start the brake control wire 8a and the hydraulic control line 8b that are connected in its two ends, back rest 3 is shut down.Utilize Fig. 9 below, the operating state of this moment is described.
Fig. 9 represent backrest 12 move advance, when stopping until being attached to the back that is sitting in the user on the cushion, perception is the state that basic point rearward rotates with lower back 7 with rotating shaft 71.When perception rotates backward with lower back 7, rotating shaft 71 also can rotate thereupon, based on this revolving force, be formed on the 1st projection 711 pulling brake control wire 8a of rotating shaft 71 1 ends, the control wire 541 on the action axle 54 that is arranged on backrest moving member 5 is rotated by the clockwise direction in the picture.At this moment, brake 56 also can be according to the rotation of identical direction, and based on this, each above the front side of brake and below the rear side retreats braking with rotating tooth bar 563 and guiding retreating and advancing to brake and use stationary rack 513 and 514 interlock mutually of case 51 top and bottom.So, when the both sides, front and back of brake 56 are rotated tooth bar and are guided the upper and lower sides stationary rack interlock of case 51, the state that the direction forwards, backwards of will being in back rest 3 moves, and the backrest 12 of this moment is in the state that relies on user's back, perception is in thoroughly the state of sideway swivel backward with lower back 7, therefore the back of being close to the user along with backrest 12, perception also can be close to user's buttocks with lower back 7, and the user is sitting on the chair 1 with the state that the sitting posture of rectifying leans against backrest 12.
In addition, when the 1st projection 711 of rotating shaft 71 1 ends spurs brake control wire 8a, the 2nd projection 712 of rotating shaft 71 other ends also spurs hydraulic control line 8b thereupon, and based on the pulling action of the 2nd projection 712, hydraulic control line 8b makes hydraulic control valve 45 become closed condition from open state.And, if hydraulic control valve 45 becomes closed condition, and then close hydraulic line 42, action to hydraulic booster cylinder 41 and reciprocating action cylinder 52 delivery hydraulic pressure or recovery stops, cause the hydraulic pressure that are transported to originally in the reciprocating action cylinder 52 can't be to hydraulic booster cylinder 41 side flow, master lever 53 will stop after advancing to certain distance.
As mentioned above, close the action of hydraulic control valve 45 by hydraulic control line 8b, the master lever 53 of backrest moving member 5 is stopped, so back rest 3 will stop under the state of backrest 12 being close to the back that is sitting in the user on the cushion 11 under the mobile state that advances.
Here, adopted at rotating shaft 71 two ends connection two brake control wire 8as and the hydraulic control line 8b of perception with lower back 7, brake 56 and hydraulic control valve 45 simultaneously turn round, the structure that backrest 12 is stopped under the state of the back of being close to the user, even but only select one among above-mentioned two wire rod 8a8b to be arranged on the rotating shaft 71, backrest 12 is moved advance, under the state of being close to the back that is sitting in the user on the cushion 11, stop.So the user can be with the sitting posture of rectifying, oneself back is leaned against under the state of backrest 12 and be sitting on the chair.
Therefore, when the user is sitting on the chair, if moving, backrest 12 advances, stop after being close to user's back, the user will naturally and understandably take correct sitting posture, and the user is sitting on the chair with correct sitting posture and leans against under the state of backrest 12 upper body toward hypsokinesis, the phenomenon that back rest 3 is postponed also can not occur, and makes the user to lean against relievedly on the backrest 12.In addition, even the user does not move the buttocks of oneself, just with the past top rake of upper body, back rest 3 can not advance yet, so the user can be in the posture that keeps being sitting in rightly on the cushion 11, upper body is turned forward, and if upper body moved back original position, still can keep correct sitting posture to lean against on the backrest 12.
In addition, when the user when the cushion 11 of chair 1 is stood up, along with the user's who acts on cushion 11 body weight disappears, supporting perception and also can disappear with the strength of lower back 7, backrest 12 will recover original state,, recovers not user mode that is.Below, be explained.At first, perception under the effect of the elastic recovering force of torque spring 72 and own wt, is a basic point with rotating shaft 71 with lower back 7, forwards is rotated in the picture to counterclockwise.But if perception lower back 7 rotary reference Fig. 3 forwards, rotating shaft 71 also can rotate simultaneously, and the brake control wire 8a and the hydraulic control line 8b that are connected in rotating shaft 71 two ends are opposite with above stated specification, will start control wire 541 and hydraulic control valve 45.In other words, brake control wire 8a can make control wire 541 rotate towards the counter clockwise direction in the picture, the rotation tooth bar 563 and 564 that makes brake 56 both sides is from the upper and lower sides stationary racks 513 and 514 of guiding case 51 when unclamping, hydraulic control line 8b makes hydraulic control valve 45 become open state from closed condition, and the hydraulic line 42 that connects hydraulic booster cylinder 41 and reciprocating action cylinder 52 is because become open state, and the hydraulic pressure that was transported to 52 li in reciprocating action cylinder originally is recycled to hydraulic booster cylinder 41.
When the user when chair is stood up, by the hydraulic booster cylinder 41 of elastic compression and a plurality of upper support pipe 47a elastic recovering force based on spring, plate 2b and upper plate 2a recover original state rapidly in making under the effect of user's body weight.At this moment, generated attraction based on inside by the hydraulic booster cylinder internal that the elastic recovering force of the back-moving spring 43 of elastic compression recovers original state at hydraulic booster cylinder 41, will absorb by hydraulic line 42 and be transported to hydraulic pressure in the reciprocating action cylinder 52, and based in reciprocating action cylinder 52 inside by the elastic recovering force of the back-moving spring 43 of elastic compression, piston rod will turn back to cylinder internal, release the hydraulic pressure of cylinder internal, and master lever 53 will move to the rear of chair, back rest 3 also can move and retreat thereupon, backrest 12 is fully moved to the rear of cushion 11, prepare mobile advancing next time.
Figure 10 is the sectional view of another embodiment of the present invention.The piston rod that this embodiment increase is provided with the hydraulic booster cylinder 41 that makes in the hydraulic booster spare 4 carries out the auxiliary hydraulic pressure supercharging part 9 that supercharging is moved, its objective is in order to sit on the chair 1 as the user, if sit on the front side of cushion 11, backrest 12 is forwards moved to greatest extent, support user's back.
Above-mentioned auxiliary hydraulic pressure supercharging part 9 by the supplemental support axle 91 that is fixedly installed on front side above the lower plate 2c and rotatably be arranged at its upper end rocking bar 92 constitute, and the front end in the end picture of rocking bar is connected to middle plate 2b bottom surface, and the rear end in the other end picture is connected on the piston rod of hydraulic booster cylinder 41.
And in the above-described embodiments, the piston rod of hydraulic booster cylinder 41 can not be fixed on the lower plate 2c, but can be provided with movably towards cylinder block.
Therefore, in the above-described embodiments, if the user is sitting in the front side of cushion 11, body weight will be concentrated the front side that acts on chair.At this moment, because under the state that upper plate 2a and middle plate 2b are supported by a plurality of linings 57, utilize hold-down screw 58 fixing, and because of in plate 2b and the lower plate 2c upper and lower part stay pipe 47a47b that is provided with spring 46 support, plate 2b is not compressed by level in might occurring, but the compressed phenomenon of state that maintenance turns forward, and this moment, rocking bar 92 will be the rotation basic point with the upper end of supplemental support axle 91, the front end of the rocking bar 92 bottom plate 2b in being connected in descends, the action that its rear end brings the piston rod of hydraulic booster cylinder 41 to rise.Finally, rocking bar 92 rises, the piston rod of compression hydraulic booster cylinder 41, and because its bounce, the front portion of plate 2b in will resiliency supported, plate 2b too turns forward in preventing, and is in rocking bar 92 and makes piston rod more effectively compress the state of the hydraulic pressure of hydraulic booster cylinder 41 inside.The hydraulic pressure of hydraulic booster cylinder 41 occurs simultaneously because of the body weight that is sitting in the user on the cushion and the compressed action of rocking bar 91, the hydraulic pressure that is transported to reciprocating action cylinder 52 is increased, impel back rest 3 to move to greatest extent and advance, support the user's who is sitting in the cushion front side back.
In addition, auxiliary hydraulic pressure supercharging part 9 rocking bars 92 are front end open symmetrical structures in both sides to the left and right, plate 2b two bottom sides in can stably supporting.
Claims (8)
1. a chair that possesses cushion, backrest and supporting leg has self-adjustable backrest to prevent the various diseases relevant with vertebra, and this chair comprises:
Upper plate, middle plate and lower plate, they are arranged between cushion and the supporting leg, according to the interval of setting, are provided with along the vertical direction;
Hydraulic booster spare, this hydraulic booster spare is arranged between middle plate and the lower plate in the mode that realizes knee springing along the vertical direction, this hydraulic booster spare comprises a hydraulic booster cylinder, this hydraulic booster cylinder is worked in such a way, promptly, when the user is sitting on the chair, body weight based on the user, middle plate presses down described hydraulic booster cylinder, makes described hydraulic booster cylinder generation elastic compression, hydraulic pressure is discharged be transported to the reciprocating action cylinder that is arranged between upper plate and middle plate, simultaneously, when the user when chair is stood, therefore middle plate is recovered the hydraulic pressure that is transported in the above-mentioned reciprocating action cylinder from being recovered original state by pressure condition;
The guiding case between upper plate and middle plate, is installed in along fore-and-aft direction on the upper surface of middle plate;
One backrest moving member comprises:
The reciprocating action cylinder, it is horizontally placed on the inside of guiding case, when the hydraulic booster cylinder of hydraulic booster spare discharges hydraulic pressure, along with the inflow of hydraulic pressure, piston rod is advanced, when the time from hydraulic booster cylinder recovery hydraulic pressure, along with the release of hydraulic pressure, piston rod is retreated;
Master lever, it is installed by level by the mobile slotted hole of the guiding case left and right sides, and mobile slotted hole is passed in the edge direction perforation vertical with the guiding case, it is connected to the front end of reciprocating action cylinder piston rod again simultaneously, along with the front and back action of piston rod, in the moving range of the mobile slotted hole that guides case, advance or backward movement;
Brake, it is set up the inside that hand guides case with the state of penetrating action axle, is used to make described master lever to be in halted state;
Back rest, it is connected to the two ends of the master lever of backrest moving member, together advances or backward movement with master lever;
Secondary control stick, it is arranged at the rear between upper plate and the middle plate movably, is being connected at its two ends under the state of back rest, advances or backward movement with back rest;
Rotating shaft is set at the end portion of back rest and a little more than the position of cushion, the two ends of rotating shaft can rotate with respect to back rest; And
The perception lower back, described perception is independent of backrest with lower back, be set on the rotating shaft, when the user is not sitting on the chair or user's buttocks and backrest when producing certain space, rotate into outstanding state towards the cushion side, and when the user is sitting on the chair, back rest forwards moves, perception this moment before backrest contact user's back, contacts user's buttocks with lower back earlier, and the driven rotary axle rotates thereupon when rearward retreating rotation.
2. chair according to claim 1 is characterized in that:
In described hydraulic booster spare, be marked with a kind of fluid in oil or the gas in the hydraulic booster cylinder, the hydraulic booster cylinder supplies the hydraulic pressure to the reciprocating action cylinder of backrest moving member by hydraulic line, or reclaims hydraulic pressure from the reciprocating action cylinder; Hydraulic line is provided with the pressure-regulating valve of the discharge-amount that is used to regulate hydraulic pressure, and the hydraulic control valve that is used to open and close hydraulic line, control hydraulic flow.
3. chair according to claim 1 is characterized in that:
The backrest moving member also comprises: shaft support part, and it is a benchmark with the guiding case, is fixed on the both sides of the left and right sides of guiding case near mobile slotted hole; The action axle, it runs through the mobile slotted hole that guides case, and two ends are passed the mobile slotted hole of guiding case and rotatably are arranged on the shaft support part; The roller support component is fixed a pair of respectively in the both sides of master lever; Guide wheel, it rotatably is arranged on the roller support component, and supports parallel and the tab-like guide rail that is formed in the upper plate two bottom sides along with the action of master lever, move along guide rail simultaneously.
4. chair according to claim 3 is characterized in that:
The brake of backrest moving member comprises: roller, and it is arranged on roller rotationally and is provided with in the hole, can be under the state that keeps with the interlock of action axle, advance or retreat along the movable passageway of the lower central that is formed on the guiding case; Retreat and the braking of advancing with rotating tooth bar, it is formed at above the front side of brake and the rear side bottom surface with heeling condition, be used to stop the brake running.
5. according to claim 1,3 or 4 described chairs, it is characterized in that:
The inboard upper and lower surface of guiding case be provided with respectively with brake retreat and the braking of advancing with rotating the tooth bar interlock, playing and make retreating and advancing to brake and use stationary rack of effect that brake shuts down.
6. chair according to claim 1 is characterized in that:
The brake control wire, it, is delivered to its revolving force on the brake when rotating shaft rotate with the form setting of action axle one end of the side end that connects rotating shaft and master lever, brake is braked or brake off moves.
7. chair according to claim 2 is characterized in that:
Hydraulic control line, it is used to open and close hydraulic control valve with a side end of connection rotating shaft and the state setting of the hydraulic control valve on the hydraulic line.
8. chair according to claim 1, it is characterized in that: also comprise: the supplemental support axle that vertically is fixedly set in the lower plate upper surface, and the auxiliary hydraulic pressure supercharging part between plate and the lower plate in being arranged on, this auxiliary hydraulic pressure supercharging part comprises the rocking bar that is arranged at supplemental support axle upper end rotationally, the front side of plate bottom surface during the front end of rocking bar is connected in, and its rear end is connected in the piston rod of hydraulic booster cylinder.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020030032799 | 2003-05-23 | ||
| KR10-2003-0032799A KR100510099B1 (en) | 2003-05-23 | 2003-05-23 | Chair enabling to control back side of chair |
| KR1020040033481 | 2004-05-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1794932A CN1794932A (en) | 2006-06-28 |
| CN100556339C true CN100556339C (en) | 2009-11-04 |
Family
ID=36806104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800141875A Expired - Fee Related CN100556339C (en) | 2003-05-23 | 2004-05-20 | Backrest can move the chair of regulating automatically |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100510099B1 (en) |
| CN (1) | CN100556339C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012000199A1 (en) * | 2010-07-02 | 2012-01-05 | Tai Chun-Chang | Buffer structure |
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| KR100614842B1 (en) | 2004-05-12 | 2006-08-22 | 주식회사 맨플러스 | Chair enabling to control back side of chair |
| KR100675715B1 (en) | 2006-06-22 | 2007-01-30 | 주식회사 맨플러스 | Chain having automatically adjustable backrest |
| KR100760543B1 (en) * | 2007-02-06 | 2007-09-20 | 주식회사 재영엠엔씨 | Clean chair having an automatic closing fuction of a seatback |
| KR100893156B1 (en) | 2007-06-20 | 2009-04-16 | (주) 에이포 | Chair with a movable back support |
| KR200448295Y1 (en) | 2007-08-30 | 2010-03-30 | 주식회사 바우코리아 | The back of a chair move to the front and back |
| KR100919418B1 (en) * | 2009-04-15 | 2009-09-29 | (주) 에이포 | Chair with a movable back support |
| CN101874688A (en) * | 2009-04-30 | 2010-11-03 | 杨诚 | Seating device |
| JP5589798B2 (en) * | 2010-11-25 | 2014-09-17 | トヨタ紡織株式会社 | Cushion length variable seat |
| CN103211432A (en) * | 2012-01-19 | 2013-07-24 | 潘峻青 | Chair and chair control system |
| CN102726973B (en) * | 2012-06-26 | 2017-02-08 | 叶金芝 | Chair structure capable of assisting waist to share body weight |
| CN102887084B (en) * | 2012-09-25 | 2015-10-28 | 浙江理工大学 | A kind of seat for pneumatic type car |
| KR101348803B1 (en) * | 2013-08-14 | 2014-01-10 | 문재현 | The chair for protect a backbone and a waist |
| KR101606755B1 (en) | 2014-12-04 | 2016-03-28 | 정상진 | The back of chair that have a front and the rear moving tool |
| CN105029945A (en) * | 2015-07-31 | 2015-11-11 | 无锡市日升化工有限公司 | Novel multifunctional office chair |
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| US10021985B2 (en) * | 2016-04-28 | 2018-07-17 | James E. Grove | Adjustable back support assembly for the back of a chair |
| DE102017208151A1 (en) * | 2016-10-24 | 2018-04-26 | Stabilus Gmbh | Adjustment device for actuating a brake and mobile unit, in particular chair |
| US20180118060A1 (en) * | 2016-10-28 | 2018-05-03 | Lear Corporation | Incrementally adjustable seat assembly |
| CN106510262A (en) * | 2016-10-31 | 2017-03-22 | 冀帆 | Adjustable multifunctional student chair |
| CN107518666B (en) * | 2017-10-19 | 2023-08-22 | 芜湖琅格信息技术有限公司 | Intelligent audio-visual sofa |
| CN108577289B (en) * | 2018-04-19 | 2022-08-19 | 湖南工程学院 | Multifunctional telescopic conversion furniture |
| CN108835986A (en) * | 2018-07-04 | 2018-11-20 | 合肥欧语自动化有限公司 | A kind of chair that intelligence can be adjusted by gravity |
| CN108773302A (en) * | 2018-07-11 | 2018-11-09 | 深圳达芬奇创新科技有限公司 | A kind of buffer unit of automotive seat |
| CN109043918A (en) * | 2018-07-20 | 2018-12-21 | 泉州医学高等专科学校 | It is a kind of can self-return mechanical bed by chair |
| CN110575017B (en) * | 2019-10-11 | 2023-04-07 | 杭州友邦演艺设备有限公司 | Adjustable theater seat back |
| CN114053066A (en) * | 2021-11-19 | 2022-02-18 | 珠海市华特雅工业气体有限公司 | Domestic high-pressure health-care oxygen cabin |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012000199A1 (en) * | 2010-07-02 | 2012-01-05 | Tai Chun-Chang | Buffer structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1794932A (en) | 2006-06-28 |
| KR20040100433A (en) | 2004-12-02 |
| KR100510099B1 (en) | 2005-08-23 |
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Granted publication date: 20091104 Termination date: 20100520 |