CN1375252A

CN1375252A - Chair

Info

Publication number: CN1375252A
Application number: CN02104659A
Authority: CN
Inventors: E·汉森
Original assignee: INTELSCHTUR OFFICE FURNITURE GmbH
Current assignee: INTELSCHTUR OFFICE FURNITURE GmbH
Priority date: 2001-02-12
Filing date: 2002-02-10
Publication date: 2002-10-23
Also published as: EP1230876A1; US20020109384A1; DE10106792A1

Abstract

An article of furniture for sitting has a seat element, a back, a support frame having a support and a mechanical structure for transmitting a movement, which connects the support in a rear seat region with the seat element, at least one spring element displacing the seat element in an abutment or return position, the spring element being formed as a front mounting for the seat element and supported on the support which is stationary, the spring element in addition to known restoring function also determining a guidance of the seat element in its front region.

Description

Chair

Technical field

The present invention relates to a kind of by claim 1 chair as described in the preamble.

Background technology

DE 196 07 136 A1 have proposed a kind of seat with so-called lazy-tongs.When seat chair backward, except the backrest motion of toppling backward, these lazy-tongs cause that stand descends near the back seat district a backrest, and cause that in a front stall district away from backrest stand rises.This produces just for the seat person when leaning on backward and slips into the impression of seat, rather than is created in the sensation of the direction slip of seat.Make stand be positioned at original position by the flexible member on the suspension that affacts in the front stall district that is arranged in stand.In order to reach chair tilting or to change the angle position of stand, must be by the seat person towards backrest or apply a power towards flexible member and overcome this and make stand and backrest remain on the power of original position.Basically has only the motion that realizes stand by the load or unload of backrest.When backrest unloaded, the proparea of stand remained in the predetermined fixed position.The motion of stand is pre-determined by connecting rod and/or guide rail.Can further improve this known seat by the present invention.

Summary of the invention

The objective of the invention is to, develop a kind of like this chair: it also provides other comfortableness and has the lazy-tongs of simplification except having above-mentioned lazy-tongs comfortable in the scope of stand.

This purpose realizes by claim 1 feature as described in the preamble.Various favourable and suitable improvement in every dependent claims, have been provided.

Chair of the present invention has flexible member as the anterior fixture of stand, this flexible member is supported on the fixing support bracket, wherein, for well-known reset function, this flexible member plays the guide rail effect in the stand proparea to stand, thereby DE 196 07 136 A1 propose have the seat of lazy-tongs the time, cancelled the support of flexible member and the required parts that lead come the power of control spring and a part of motion process of stand.In addition, this difunctional or double acting of spring has also improved the comfort level or the well-formedness of seat to the seat person of any stature and any body weight.Because the mounting means of the subtended angle between stand and the backrest by flexible member of the present invention no longer only decided by the size to the power of backrest effect, thereby also just can determine the inclination angle of seat.The people of heavy body weight of imposing stature usually wishes to enlarge the subtended angle between stand and the backrest, can affact the expansion that the skew free degree that flexible member that bigger power on the flexible member and this flexible member propose than DE 196 07 136 A1 roughly has in vertical direction automatically realizes subtended angle by his big body weight and stature to a great extent now.Like this, stand turns forward or descends in the proparea, all can enlarge the subtended angle between backrest and the stand, and irrelevant with the position and the load of backrest.Except the people to big body weight and stature has this comfortableness, also the people who is sitting in the stand proparea had advantage.This seat usually is the work posture the people of the other work of computer, in this work posture, easily turns forward if sit face, and the people who is seated is felt comfortably cool.This orientation of seat also is that the additional free degree by flexible member of the present invention produces.The people who on this seat, stand is loaded, though the people of proper heavy and light, because this posture is roughly by being positioned at the downward compression elasticity element of stand gravity center of human body in front, so stand produces the inclination of requirement forward.According to the viewpoint of medical science, this position of stand helps a kind of favourable human posture, and promptly in this human posture, the people's who is seated pelvis turns forward.

According to a kind of favourable structure of the present invention, flexible member is designed to leaf spring, and this leaf spring is preferably in the direction of seat and extends and bending.A leaf spring is that an independent leaf spring or plate spring sheet satisfy the requirement to flexible member in an ideal way, because crooked leaf spring actuating pressure in two required directions.On the one hand, leaf spring is effect upwards, thereby stand is risen on the proparea or keeps; On the other hand, the leaf spring forward action is in the direction of sitting, thereby makes stand be subjected to power forward, and reacts on the decline in back seat district thus, so leaf spring makes stand and the backrest that directly or indirectly connects is with it remained in a preceding stop position or the home position.The seat chair is sat before causing and is distinguished rising or cause the preceding district that sits to remain on certain height except the decline of recoil district backward, decides on the shape or the bending of leaf spring.

The adjustability of flexible member can be various requirement or the hope of the property regulation of stand to the person that satisfies the seat best.Particularly an individual light little people also can enlarge the subtended angle between stand and the backrest, and does not need to retreat.Certainly, the adjusting of the power by flexible member also can be controlled the obliquity of seat.

According to a kind of special structural shape of the present invention, the fulcrum by mobile spring and/or change the elastic force that distance between the single leaf spring can change leaf spring.This adjusting can realize by simple thereby inexpensive especially governor motion.

In addition, as the most handy helical spring of flexible member and/or rubber element and/or rubber metal element and/or hydraulic die cushion and/or air cushion or their combination.These flexible members can adapt to different requirements and possibility is installed.

It is particularly advantageous that the present invention is used for the seat that backrest is connected with motion transfering device by a back bracket.When this arrangement, the comfortable function of seat of the present invention has surpassed disclosed comfortableness in the prior art fully.

In addition, proposed a kind of seat with comfortable function of the present invention, the backrest of this seat directly is connected with stand.So just constituted a kind of machinery seat of simple thereby cheap high comfort especially.This seat is flexible in the transition region from the stand to the backrest, so although this chair is simple in structure, have the comfortableness that approaches aforementioned seat.

By using, can make seat adapt to the required bearing-surface of thigh that is sitting in the people on the chair best in the seat district by a block plate with by a stand of arranging that transportable supporting is formed on it.Thereby improved the well-formedness of chair more to the people of different statures and body weight.

Below in conjunction with enforcement shown in the drawings details of the present invention is described.

Description of drawings

Accompanying drawing is represented:

The side view of first kind of office seating of Fig. 1 the present invention in preceding stop position;

The side view of Fig. 2 office seating shown in Figure 1 in the stop position of back;

The vertical view of Fig. 3 office seating shown in Figure 1;

The side view of second kind of office seating of Fig. 4 the present invention in preceding stop position;

The side view of Fig. 5 office seating shown in Figure 4 in the stop position of back;

The vertical view of Fig. 6 office seating shown in Figure 4;

The side view of the third office seating of Fig. 7 the present invention in preceding stop position;

The side view of Fig. 8 office seating shown in Figure 7 in the stop position of back;

The vertical view of Fig. 9 office seating shown in Figure 7;

The side view of the 4th kind of office seating of Figure 10 the present invention in preceding stop position;

The side view of Figure 11 office seating shown in Figure 10 in the stop position of back;

The vertical view of Figure 12 office seating shown in Figure 10;

The 5th kind of office seating of Figure 13 the present invention is at the side view of preceding stop position;

The side view of Figure 14 office seating shown in Figure 13 in the stop position of back;

The vertical view of Figure 15 office seating shown in Figure 13;

The side view of the 6th kind of office seating of Figure 16 the present invention in preceding stop position;

The side view of Figure 17 office seating shown in Figure 16 in the stop position of back;

The vertical view of Figure 18 office seating shown in Figure 16.

The specific embodiment

Fig. 1 represents the side view as a kind of chair 1 of office seating 2.Office seating 2 mainly is made up of a bogie 3, a stand 7 and a backrest 9, and wherein this bogie has roller 4 and is connected and adjustment height and rotatable with a support bracket 6 by an axle 5; This stand is fixed on this support bracket 6; Backrest 9 then is connected with support bracket 6 by a back bracket 8.Support bracket 6 is made up of the buckstay 10 of a bolster 5, member 11 and a preceding fixture 14 that is designed to flexible member 15 of being used for transmitting motion of being designed to connecting rod 12.Stand 7 is made up of supporting 16 and one a block plate 17.Supporting 16 can be moved and locking between primary importance P and second place P ' along the direction A that sits with respect to seat board 17.By this bearing-surface that to regulate the thigh that is sitting in the people on the office chair 2 individually that moves.Preceding seat district 18 on stand 7 or seat board 17 is provided with forward flange spare 19,20, and rear flange spare 22,23 (referring to Fig. 3) then has been installed in recoil district 21.Forward flange spare 19,20 supports a flexible member 15 respectively, and this flexible member 15 is designed to leaf spring 24,25.

Leaf spring

24,25 plays elastic cantilever, and stand 7 is hinged on by forward flange spare 19,20 on the free end of this cantilever and is rotatable.Fig. 1 represents that office seating 2 is positioned at a upright or preceding stop position I, and in this position, seat is in the unmanned state that loads, and does not promptly have imposed load.In this preceding stop position I, flexible member 15 rises to a height H to stand 7 by the power FZ of a vertical effect along direction of arrow z.In addition, the horizontal force FX of flexible member 15 draws in position I shown in Figure 1 to stand 7 along direction of arrow x.This pulling force also affacts on the connecting rod 12 by rear flange spare 22,23 and on the back bracket 8.They are hinged on the beam 10 and can be around 26 rotations of an axle.Circuit orbit K defines by connecting rod 12, and axle 27 can move on this circuit orbit, and rear flange spare 22,23 is connected with connecting rod 12 or back bracket 8 by this axle.By a power F of human who is sitting on the office chair 2 _SAffact on the chair 2, stand 7 is just by sitting the power F in district before affacting _SComponent roughly around fulcrum 27 along counter rotation, until the reaction force F by flexible member 15 _ZEquilibrant force F _SThis component till.Power F in the effect of recoil district _SComponent transmit by connecting rod 12, support bracket 10, axle 5 and bogie 3 or on flexible member 15, produce a pulling force by connecting rod 12, this pulling force passes through its component F _XOffset.Like this, according to the power F that acts on _SAnd F _ZAnd make stand 7 produce an obliquity that for example is shown in broken lines 28, thereby the subtended angle α between backrest 9 and the stand 7 is expanded to subtended angle α '.The decline of stand 7 both can realize by its back of the body contact backrest 9 of human, and sit district 18 before also can only being sitting in by the people and realize.Certainly, if sit before the people only is sitting in the district 18, then same individual causes that stand 7 produces bigger obliquity, because the major part of body weight acts on the flexible member 15 at this moment.

Fig. 2 represent office seating 2 shown in Figure 1 be positioned at one after stop position II.Office seating 2 affacts power F on the backrest 9 by a people who is seated _RRemain on this position.This power F _RPower F by flexible member 15 _XBalance.So the motion of backrest 9 and stand 7 is subjected to the restriction of flexible member 15.Power F _RBe delivered on the flexible member 15 as pulling force by back bracket 8 and stand 7, wherein, axle 27 rotates to position shown in Figure 2 from position shown in Figure 1 at circuit orbit K.So power F _RBy lazy-tongs is that the special of backrest 9 and stand 7 is connected except causing that backrest 9 is rotated in a clockwise direction, cause that also axle 27 moves clockwise in circuit orbit K upper edge, this motion is to produce around axle 27 rotation along clockwise direction with stand 7.Like this, produce typical case's decline of stand 7 by transmission mechanism in

recoil district

21, and 18 risings that produce stands 7 in preceding seat district.These superpose with the another kind of motion that is produced by the flexible member that does not lead by the motion that lazy-tongs produce.Another moves by the people who sits down with a power F _SAffact on the seat face 7 and produce, sit part in the district 18 before this masterpiece is used in by the F of flexible member 15 _ZAbsorb.Draw one thus with respect to the altered subtended angle of subtended angle α shown in Figure 2, regard the power F of usefulness as _SAnd F _ZSize and decide.So this subtended angle singly is not to be determined by lazy-tongs, is to be mainly F _SAnd F _ZFunction.

Fig. 3 represents the vertical view of office seating 2 shown in Figure 1.Here cancel the diagram of bogie and roller, but shown the element that is positioned at stand 7 belows.In the scope of backrest 9, this diagram is simplified equally.Beam 10 makes U-shaped and flexible member 15 is bearing in respectively on the free arm 29,30.In the scope of rear flange spare 22,23, back bracket 8 and connecting rod 12 make fork 31.

Fig. 4 to 6 represents second kind of office seating 32.Be that with the difference of the office seating 2 shown in Fig. 1 to 3 this seat has the adjusting device 33 of the elastic force of flexible member 15.As elastic force adjusting device 33 are the tensioning apparatus 34 with handwheel 35, can operate a unshowned fishbolt by this handwheel, can change the distance between the single leaf spring 36 of spring element 15 by this fishbolt.Less distance between these leaf springs 36 causes the bigger clamping force of flexible member 15.In addition, the office seating shown in Fig. 4 to 6 32 is that with the difference of the office seating 2 shown in Fig. 1 to 3 spring damping of stand 7 is only used a spring element 15.Can produce the elongated especially structure of office seating 32 thus.

Fig. 7 to 9 represents the third office seating 37.Different with the second kind of office seating 32 shown in Fig. 4 to 6 is that the flexible member 15 here is rubber element 38 or rubber-metal elastic component 39.So-called rubber-metal elastic component is one and is placed on two working of plastics between the metallic plate, particularly rubber parts.Flexible member 15 has effective elasticity at x and z direction.By connecting rod 12 stand 7 mechanical connections on beam 10, avoided the spring in horizontal y.Stop position II after if office seating shown in Figure 8 37 is positioned at, then flexible member 15 is subjected to the effect of shear loads; As long as when office seating 37 residing positions make backrest 9 with respect to inclined position shown in Figure 7, all can produce this situation.

The 4th kind of office seating 40 shown in Figure 10 to 12 is similar to the third office seating 37 shown in Fig. 7 to 9.Here flexible member 15 is a helical spring 41.Can be as for operation principle with reference to the explanation of figure 7 to 9, because the effect of helical spring 41 and rubber element 38 or rubber-metal elastic component 39 is suitable.

Figure 13 to 15 represents the 5th kind of office seating 42.Different with office seating shown in Fig. 1 to 12 is that office seating 42 has a seat carrier 43.Seat carrier 43 connects into whole backrest 9 by one with stand 7 and forms.Seat carrier 43 constitutes an elasticity transition region 44.When office seating 42, the partial function of lazy-tongs promptly enlarge subtended angle α between backrest 9 and the stand 7 by this flexible or flexible transition region 44 carry out, this transition region affacts power F on the backrest 9 according to being sitting in people on the seat 42 _RCause the backrest resilience.As the described seat of Fig. 1 to 12, depend on the counter-force F that produces by flexible member 15 _XPower F _RThe same rising that causes the decline of seat carrier 43 in recoil district 21 and cause seat carrier 43 in preceding seat district 18.The people's who sits down gravity F _SOr its component that act in the preceding seat district 18 cause stand 7 to descend along counter-clockwise direction.When office seating 42, this can cause that backrest descends together at least to such degree, and promptly the subtended angle α of seat carrier 43 does not affact power F on the backrest 9 because of an increase _RAnd enlarge.

Figure 16 to 18 represents the 6th kind of office seating 45.As the 5th kind of office seating 42 shown in Figure 13 to 15, this office seating 45 also has a seat carrier 43 of being made up of a stand 7 and backrest 9, and their elasticity in transition region connects.Different with the office seating shown in Fig. 1 to 15 is when office seating 45, to be replaced by guide rail 13 as the hinged bar of rotation that transmits sporting 11.Guide rail 13 is to realize as the slotted hole 46 that constitutes on cantilever 47.Cantilever 47 is fixedlyed connected with beam 10.The rear flange spare 22,23 of fixedlying connected with seat carrier 43 is bearing in the slotted hole 46 by a continuous axle 27.

The present invention is not restricted to the described embodiments.Exactly, the present invention includes the interior of the present invention many improvement of protection domain.Particularly, flexible member also can be arranged on the chair that does not have bogie, and promptly this chair has supporting leg or leg and/or fixedly mounts.

Claims

1. the chair (1 that has a stand (7), a backrest (9) and a support bracket (6); 2,32,37,40,42,45), wherein support bracket (6) comprises that a beam (10) and one are used for transmitting for example connecting rod (12) of motion and/or the mechanical device (11) of guide rail (13,46), this mechanical device links together beam (10) and stand (7) in recoil district (21), wherein is provided with at least one flexible member (15; 24,25,38,39,41), this flexible member can move into a stop position or home position (I) to stand (7), it is characterized by, and is provided with spring element (15 as the preceding fixture (14) of stand (7); 24,25,38,39,41), this flexible member is bearing on the fixing beam (10), and wherein flexible member (15; 24,25,38,39,41) except well-known reset function, also determine the guiding of stand (7) in its proparea (18).

2. by the chair of claim 1, it is characterized by, flexible member (15) constitutes as leaf spring (24,25), this leaf spring be preferably in extend in the direction (A) of seat and particularly an end clamp.

3. by one chair of aforementioned claim, it is characterized by spring element (15; 24,25,38,39,41) elastic force is adjustable.

4. by one chair of aforementioned claim, it is characterized by, the elastic force of leaf spring (24,25) is adjustable by the mobile of fulcrum of spring.

5. by one chair of aforementioned claim, it is characterized by, the elastic force of leaf spring (24,25) can change by the distance that changes between the single leaf spring (36).

6. by one chair of aforementioned claim, it is characterized by, flexible member (15) is helical spring (41) and/or rubber element (38) and/or rubber-metal elastic component (39) and/or hydraulic die cushion and/or air cushion.

7. by one chair of aforementioned claim, it is characterized by, backrest (9) is fixed on the back bracket (8), and this support is connected with the device (11) that transmits motion.

8. press one chair of aforementioned claim, it is characterized by, backrest (9) is fixed on the stand (7), and wherein backrest (9) and stand (7) preferably constitute a seat carrier (43), and this seat carrier has a transition region spring and/or flexible (44) especially.

9. by one chair of aforementioned claim, it is characterized by, stand (7) comprises a supporting (16) and a block plate (17), and they can relatively move.