CN101715310A - Chair with oscillating backrest - Google Patents

Chair with oscillating backrest Download PDF

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Publication number
CN101715310A
CN101715310A CN200880018772A CN200880018772A CN101715310A CN 101715310 A CN101715310 A CN 101715310A CN 200880018772 A CN200880018772 A CN 200880018772A CN 200880018772 A CN200880018772 A CN 200880018772A CN 101715310 A CN101715310 A CN 101715310A
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CN
China
Prior art keywords
aforesaid
chair
backrest
seat
articulated
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Pending
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CN200880018772A
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Chinese (zh)
Inventor
F·马莱诺蒂
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Malenotti SRL
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Malenotti SRL
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Publication date
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Publication of CN101715310A publication Critical patent/CN101715310A/en
Pending legal-status Critical Current

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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C1/00Chairs adapted for special purposes
    • A47C1/02Reclining or easy chairs
    • A47C1/031Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03255Reclining 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
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C1/00Chairs adapted for special purposes
    • A47C1/02Reclining or easy chairs
    • A47C1/031Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03261Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03272Reclining 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
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C1/00Chairs adapted for special purposes
    • A47C1/02Reclining or easy chairs
    • A47C1/031Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03294Reclining 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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  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs Characterized By Structure (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)

Abstract

A chair with backrest that can be inclined backwards has a seat carried by a support (2b), connected by means of an articulated-parallelogram system (11, 12) to the fixed supporting structure (4, 10) of the chair. The support (17) of the backrest is articulated to the support (2b) of the seat and is operatively connected to said articulated-parallelogram system so that any reclining backwards of the backrest causes a raising and a slight inclination backwards of the seat. The support of the backrest (17) is moreover connected by means of an articulated arm (23) to a sliding support (2a), on which the seat is mounted (2), and is in turn mounted so that it can slide in a longitudinal direction (A) on seat support (2b).

Description

Chair with oscillating backrest
[technical field]
The present invention relates to a kind of chair, the chair of the type comprises:
Supporting construction;
The seat, it has the seat support member, described seat support member is connected to described supporting construction by the articulated parallelogram based connector, described articulated parallelogram based connector comprises at least one the first arm and at least one second arm, in described at least one the first arm and at least one second arm each all is hinged to described seat support member and described supporting construction, thus described seat can dip and raised position between displacement;
Backrest, described backrest has back support, described back support is installed into can swing it between roughly vertical position and the position that leans to backward, described back support functionally is connected to described seat support member, so that described backrest has caused the displacement of described seat towards raised position towards the displacement of the position that leans to, vice versa, thereby described backrest is replied (recall) by a power towards described vertical position, and described power depends in part on the weight that is sitting in the people on the described seat at least; And
Elastic device, it is arranged between one of them or the described seat support member in described supporting construction and described first and second arms, and described elastic device trends towards making described seat to reply and described backrest is replied towards described vertical position towards described dipping.
[background technology]
Chair to above specified type in document number EP-A-0 249 584 is described and illustrates.Described known settling mode presents and guarantees to trending towards the power that backrest is replied towards vertical position to carry out a kind of self-regulating advantage according to the people who takes chair.In general, described characteristic is important demand in having the chair that can lean to backrest.The adjusting device of hand-guided is equipped with for many chairs of office's use, this makes the user to regulate and trends towards the power of backrest towards the vertical position answer, as saying, people's the weight of taking chair is big more, and generally speaking described power be certain to big more.Be used under the situation of " masses " at chair, such as, for example be designed for the chair of convention hall, auditorium, arenas etc., obviously can not consider the manual adjustment device, this is both because the demand of its cost and simplification and low production cost forms contrast (these demands are characteristics of the chair of this type), again can be according to his owing to each new user that can not expect chair or the operation regulated of his own wt.The chair of illustrating in EP-A-0 249 584 has solved aforesaid problem, as long as the power that each new user of chair comes automatic real estate life that backrest is replied towards vertical position, described power is the function of people's weight.
[summary of the invention]
The objective of the invention is further to improve aforesaid known chair, above-mentioned favourable characteristic has been increased from other favourable characteristics of angle of ergonomics and user's comfortableness.
In order to reach described purpose, theme of the present invention is the chair with complete characteristic of having pointed out at start-up portion, described in addition chair is characterised in that, the seat of described chair supports by sliding members, described sliding members is installed into can slide it in a longitudinal direction on the support member at described seat, and be characterised in that, the sliding members at described seat functionally is connected to described back support, thereby described backrest causes the rollback of the sliding members at the described seat of support with respect to described seat support member towards its motion that leans to the position.
Because described characteristic, when the people is sitting on the described chair when leaning on described backrest, it is leaned to backward, as under the situation of known settling mode, the power that generation makes backrest reply towards vertical position, described power depends on people's weight, but except this, the rollback at seat has also taken place, this makes when the gradient of backrest changes, the zone at occupant's the described seat of Body contact and the distance between the backrest can keep roughly constant, thereby prevent or reduced described backrest with respect to the motion at the people's who is seated back.Yet in described existing known chair, described distance trends towards increasing along with the increase of the gradient of backrest, and the result causes chair to make occupant's " (undresses) undresses ", and the meaning is to trend towards making in the back slide out its trousers of his shirt.
Other advantageous feature according to chair of the present invention specify in appended claims.
[description of drawings]
Present invention is described referring now to accompanying drawing, and described accompanying drawing provides with the form of limiting examples and wherein fully:
Fig. 1 is the side view according to the embodiment of chair of the present invention;
Fig. 2 is under two of chair different duties with Fig. 3, the view of the magnification ratio of the details of Fig. 1; And
Fig. 4 to Fig. 9 is under different duties, according to the schematic views of the magnification ratio of the details of chair of the present invention.
[specific embodiment]
In Fig. 1, Reference numeral 1 is expressed as whole chair, and it is designed to the chair as " masses " especially.Under any circumstance can also apply the present invention to the chair that designs for various objectives, such as, for example chair that uses for office or the chair that is used for dwelling house.
Chair 1 comprises seat 2 and the backrest 3 that is supported on the polycrystalline substance 4, and the mode of described support will be described in detail hereinafter.
Under the situation of example illustrated, the polycrystalline substance 4 of the type comprises vertically post 5 of single central authorities, the post 5 of the type comprises the pneumatic operation spring of the height that is used to regulate described seat, the lower end of post 5 is contained in the shell of the centre of being located at support member 6, and described support member 6 comprises a plurality of shanks 7 that stop with runner 8.Be installed in the pneumatic operation spring handle 9 the top be supporting case 10, described pneumatic operation spring is attached to post 5, supporting case 10 is for example made by metal material.
In this manual, term " longitudinally " and " longitudinally " use with respect to the direction of the approximate horizontal of the vertical symmetrical plane that is parallel to chair, are represented by arrow A in Fig. 1.Similarly, term " horizontal " and " laterally " with respect to level and use perpendicular to the direction of the vertical symmetrical plane of chair, just, perpendicular to the direction on the plane of Fig. 1.
Under situation of the present invention, seat 2 is supported by slide construction 2a, and slide construction 2a is installed into can slide it along the direction that is roughly parallel to longitudinal direction A on seat support member 2b.Then, seat support member 2b is connected to supporting case 10 by articulated parallelogram based system, and under the situation of illustrated embodiment, described articulated parallelogram based system comprises two preceding articulated jibs 11 and single back articulated jib 12.Two preceding articulated jibs 11 are arranged in the both sides of box 10, and are articulated in seat support member 2b around lateral shaft 13, and are articulated in supporting case 10 around lateral shaft 14.Back articulated jib 12 is articulated in seat support member 2b and is articulated in supporting case 10 around lateral shaft 16 around lateral shaft 15.
Also with reference to Fig. 2 and Fig. 3, backrest 3 according to chair of the present invention is supported by back support 17, shown in example, back support 17 is made of arm, described arm at one end supports the panel of backrest 3 and is two 17a of branch (it is visible having only one of them in the drawings) at other end bifurcated, and the end of described two 17a of branch is hinged on the seat support member 2b around aforesaid lateral shaft 15.In two preceding articulated jibs 11 each all prolongs until hinged shackle 18 in the back of jointed shaft 14 in the side of supporting case 10.Shackle 18 is connected to the support arm 17 of backrest 3 in hinged mode around axle 19 (seeing Fig. 2 and Fig. 3), and is connected two rear ends of two articulated jibs 11 around axle 20.Two side arms 11 also interconnect by transverse bolt 21, and transverse bolt 21 engages with arcuate slots 22 in each sidewall that is formed on box 10.At last, elbow arm 23 has an end and opposite end, and a described end is articulated in shackle 18 around axle 20, and described opposite end is articulated on the sliding support 2a at seat around lateral shaft 24.
In this specification and accompanying drawing, the ad hoc structure of the panel of not shown each seat 2 and backrest 3, this is because it can obtain in any known mode, and in itself, it is not in protection scope of the present invention.
With reference to figure 4, the transverse bolt 21 that is connected to two articulated jibs 11 is supported with calotte 25, helical spring 26 rests on the top of calotte 25, and the axis of helical spring 26 represents by 27, and helical spring 26 is placed in the supporting case 10 and lean on the lower wall of described box with its lower end.Spring 26 trends towards replying pin 21 towards the position that maximum rises, under described maximum position of rising, pin 21 be formed on box 10 on a plurality of grooves 22 in each top contact.Because pin 21 is supported by two articulated jibs 11, the position that the maximum raised position of pin 21 rotates forward corresponding to articulated jib 11 maximums, thereby the maximum position of rotating forward corresponding to back articulated jib 12, back articulated jib 12 constitutes described articulated parallelogram based system with arm 11, and described articulated parallelogram based system is connected to supporting case 10 with seat support member 2b.Described state is shown in Figure 2, its corresponding to do not taken when chair or even it taken and when the people that take chair not under the situation of backrest applied thrust, the position that presents by described seat and backrest.Under static (rest) of chair state, as shown in Figure 2, thereby be used for the rear end of articulated jib 11 is connected to the axle 20 maximum raised positions at it of shackle 18, described maximum raised position has been determined the position that the maximum of the support arm 17 of backrest 3 is rotated forward by shackle 18.As seen, under described state, described layout makes backrest 3 roughly at vertical state.It shall yet further be noted that under described inactive state, sliding support 2a with respect to seat support member 2b and along the longitudinal direction A in position that maximum is advanced.
From inactive state illustrated in figures 1 and 2, if a people is sitting on the seat 2, his leaning on back backrest 3, bring pressure to bear on the backrest 3, this tends to make backrest 3 to swing backward, the swing backward of the support arm 17 of described backrest cause upwards swing of articulated jib 11,12 (along as Fig. 1 to 3 seen in counter clockwise direction), this is because support member 17 moves feasible jointed shaft 15 to it to top offset.Thereby the sweptback motion of backrest is risen seat 2.Described motion be compressed at the spring 26 after bottom offset of pin 21 in groove 22, and described motion is resisted on prevalence by spring 26 when the weight as the people is sitting on the chair by spring 26 less degree ground antagonism.In fact, people's weight trends towards making articulated jib 11,12 to rotate and (as shown in the figure, along clockwise direction), is accompanied by the upwards rotation (along clockwise direction) subsequently of described backrest.Therefore, the occupant runs into resistance applying when one thrust is on backrest backward, and this resistance trends towards replying backrest towards vertical position, and this resistance is the function of the people's that is seated weight.Therefore from this angle, chair according to the present invention is characterised in that, as conceive in 249 No. 584 documents of EP-A-0, according to the people's who is seated weight to carrying out a kind of automatic adjusting towards the power of vertical position answer backrest.In fact, the demand of comfortableness and ergonomics needs heavier people should run into the bigger reaction force of being bestowed by backrest when backrest moves backward.
Key property according to novelty of the present invention is that when backrest receded motion, arm 23 was subjected to displacement, and the sliding support 2a that makes the seat is with respect to seat support member 2b rollback.Therefore, in chair according to the present invention, when the occupant leans on described backrest and when it is leaned to backward, the rise and the rollback at seat has taken place, make the occupant the Body contact seat the zone and roughly remain unchanged with distance between the zone that contacts backrest.Described aspect constitutes the substantive difference that has the chair of type that can sweptback backrest with respect to known, in the chair of known type, as long as backrest rotates backward, simultaneously with the make progress motion of slip of backrest against occupant's back, backrest just can recede, thereby the jargon that uses industry to accept usually, as long as chair makes slide out his trousers of occupant's shirt at occupant's back, chair just makes the occupant " undress " so.In chair according to the present invention, because the motion that leans to backward of backrest is risen and rollback the people's who is seated health, roughly offset or at least greatly reduced aforesaid relative sliding motion between backrest and back, so the user is more comfortable.
With reference to figure 4-9, accessory part 28 is installed on the transverse bolt 21 again, and accessory part 28 comprises and being installed on the pin 21 and the main body 29 fixing with respect to handle 30, and the cylinder 31 with end head 32 is installed on handle 30 slidably.Helical spring 33 axially is located between the support member 34 of the head 32 of cylinder 31 and main body 29.Should note, comprise main body 29, spring 33 and slidably the accessory part 28 of cylinder 31 be set in the plane, this plane transversely sell 21 axle with spools 27 of spring 26 is established within it the plane at intervals, thereby prevent any interference between spring 26 and the spring 33.
Accessory part 28 can rotate around the axle of pin 21, thereby presents respectively in three different operating positions shown in Fig. 4, Fig. 6 and Fig. 8.The operating position that is used for accessory part 28 is selected by selector member 35, selector member 35 is installed as it and can rotates around the axle 36 of the front portion of supporting case 10, and can rotate around described axle 36 by the actuator lever (not shown) on box 10 1 sides that are arranged on the below, seat.
Axle 36 overlaps with axle 14.The actuator lever of selector member 35 is in a side of chair, and its position is corresponding to the position of axle 14/36, and what be positioned at opposite side is traditional actuator lever of pneumatic operation spring 9.
Selector member 35 has nose 37, be designed to flexibly be coupling in any one among three bearing 38a, 38b, the 38c, described three bearings are limited by the flexible member that the bar of the one-tenth definite shape of making by plastic material constitutes, and described flexible member has the cross section of the ring of shape picture closure.After rotating selector member 35 by above-mentioned bar, nose 37 can be bonded among among three bearing 38a, 38b, the 38c one.The rotation of selector member 35 can be passed to accessory part 28 by the wire 39 that is definite shape, and an end of wire 39 is anchored into the radial attachment 40 of selector member 35, and the other end is anchored into the main body 29 of accessory part 28.Wire 39 moulding by this way, thus can compensate two variable in distance between the point, be used to select the end of wire 39 of the different operating position of accessory part to be anchored into described two points., described layout taken and thereby backrest leans to backward and sells 21 and be positioned in each slit 22 when dipping and also can regulate selector member 35 when chair even also making.When pin 21 is dipping, do under the situation of selection, connect wire 39 and selecting the operation back that strain takes place and just automatically accessory part 28 is being reorientated when getting back to raised position in case sell 21.
When the nose 37 of selector member 35 was arranged in the bearing 38a of spring element 38, accessory part 28 was in position shown in Figure 4.Under described state, spring 33 is not carried out any function, and backrest recedes and makes the effect of pin 21 antagonistic springs 26, and as seen, opposing is owing to the people's of riding seat the active force (see figure 5) that weight caused reduces.
When selector member 35 during in position shown in Figure 6, wherein nose 37 is bonded among the bearing 38b of spring element 38, selector member 35 is in such position, make the brake apparatus 41 of support structure of supporting case 10 contact with the surface of main body 28 immediately, thereby anti-shotpin 21 is to bottom offset.Therefore, under described state, thereby the backrest of described chair locked it can not recede.Brake apparatus 41 it should be noted that under state as shown in Figure 4, instead, is inserted in the cavity that forms in the main body 29 (invisible in the drawings), so can not interfered with the main body 29 of accessory part 28 owing to brake apparatus 41.As has been described, under state shown in Figure 6, therefore the (see figure 7) backrest can not recede after contacting with brake apparatus 41.
If selector member 35 is brought in the position shown in Figure 8, the head 32 of cylinder 31 rests on the bearing 42 that forms on the bottom of supporting case 10, thereby when backrest recedes, pin 21 decreases spring 26 compressions and main body 29 is reduced, and handle 30 is slided in cylinder 31, and helical spring 33 compresses thereupon.Therefore, under this state, spring 33 is added on the spring 26 active force with the backrest displacement backward that creates antagonism.This selection can be selected the counteragent that the user needs spring 26 not guarantee individually by the very heavy user of body weight.
Therefore, can see,, in the motion process that leans to backward at backrest, guarantee to select a series of different operating states, to satisfy user's different demands outside the proper exercise of rider's body according to chair of the present invention.
Can also see that in the accompanying drawings the motion that backrest leans to backward also makes the seat rise, yet this is accompanied by also that the seat recedes (tilting with respect to the less degree of the rotation of backrest ground) a little thereby user's comfortableness can be maximized.
Another advantageous feature according to chair of the present invention is such fact: the mechanism of the part of the supporting construction of formation seat and backrest is included in the supporting case, comprising, accessory part 28 with secondary spring 33 can be attached to main spring 26 to produce the reaction force of backrest with secondary spring 33 under the situation of needs.
The relative positioning of each jointed shaft of articulated jib of supporting construction that constitutes described seat and backrest is also selected, so that to user's comfortableness that offers the best.In addition, the use of the connecting rod element of similar shackle 18 or back articulated jib 12 has replaced more traditional pin-groove connector, makes it possible to improve to some extent from the aspect of reducing friction.
Certainly, under the situation of principle of the present invention, can be with respect to only the details and the embodiment of structure being carried out wide in range change herein by case description and the content illustrated, and can not depart from scope of the present invention.

Claims (14)

1. a chair (1), it comprises:
-supporting construction (4);
-seat (2), it has seat support member (2b), described seat support member (2b) is connected to described supporting construction (4,10) by articulated parallelogram based connector (11,12), described articulated parallelogram based connector (11,12) comprises at least one the first arm (11) and at least one second arm (12), in described at least one the first arm (11) and at least one second arm (12) each all is hinged to described seat support member (2b) and described supporting construction (10), thus described seat can dip and raised position between displacement;
-have a backrest (3) of back support (17), described backrest (3) is installed into can slide it between roughly vertical position and the position that leans to backward, described back support (17) functionally is connected to described seat support member (2b), make described backrest (3) cause the displacement of described seat (2) in this way towards raised position towards the displacement of the position that leans to backward, and vice versa, thereby described backrest is replied towards its vertical position by the power effect, and described power depends on the weight that is sitting in the people on the described seat (2) at least in part; And
-elastic device (26), it functionally is located between described supporting construction (10) and described first articulated jib (11) or described second articulated jib (12) or the described back support (17), described elastic device (26) trends towards making described seat (2) towards the described answer that dips, and described backrest (3) is replied towards described vertical position
Described chair is characterised in that, described seat (2) is supported by sliding support (2a), described sliding support (2a) is installed into makes it go up slip at described seat support member (2b) in a longitudinal direction, and be characterised in that, described sliding support (2a) functionally is connected to described back support (17), thereby receding of described back support (17) causes the rollback of described sliding support (2a), described seat is installed on the described sliding support (2a) with respect to described seat support member (2b), and described seat support member (2b) is connected to fixed support structure (10) by articulated parallelogram based system.
2. chair according to claim 1, it is characterized in that, in described fixed support structure (10) top, described first articulated jib (11) is termination in the prolongation of the back of its jointed shaft (14) and with the rear end, described rear end is connected to described back support (17) in hinged mode around lateral shaft (19,20), and described back support (17) also is connected to aforesaid seat support member (2b) in hinged mode around lateral shaft (15).
3. chair according to claim 2, it is characterized in that, the part of aforesaid first articulated jib (11) supports transverse bolt (21), described part further prolongs the jointed shaft (14) that surpasses at described first articulated jib (11) of described fixed support structure (10) top, described transverse bolt (21) is guided in the groove (22) in the described fixed support structure (10), and described part is pressed on the described back-moving spring (26), and described back-moving spring (26) is arranged between described transverse bolt (21) and the aforesaid fixed support structure (10).
4. chair according to claim 2 is characterized in that, described back support (17) also is connected to aforesaid sliding support (2a) by articulated jib (23).
5. chair according to claim 2, it is characterized in that, the rear end of aforesaid first articulated jib (11) is hinged to shackle element (18) around lateral shaft (20), and the opposite end of described shackle element (18) is hinged on the top of described back support (17) around lateral shaft (19).
6. chair according to claim 3, it is characterized in that, the rear end of aforesaid first articulated jib (11) is hinged to shackle element (18) around lateral shaft (20), the opposite end of described shackle element (18) is hinged on the top of described back support (17) around lateral shaft (19), and be characterised in that, aforesaid articulated jib (23) is connected on the aforesaid shackle element (18) around aforesaid lateral shaft (20) in hinged mode, and described articulated jib (23) is connected to described sliding support (2a) with described back support (17).
7. according to each described chair in the aforesaid claim, it is characterized in that aforesaid first and second articulated jibs (11,12) are by moulding and layout, thereby make its rotation that makes progress cause slightly receding of described seat (2).
8. according to each described chair in the aforesaid claim, it is characterized in that, the part that described first and second articulated jibs (11,12) are hinged to the described fixed support structure on it is the form of box, in described box, be formed at least one guiding groove (22) of aforesaid transverse bolt (21), described transverse bolt (21) is supported by aforesaid first articulated jib (11), and described box comprises the aforesaid spring (26) that is arranged between described fixed structure and the aforesaid transverse bolt (21).
9. chair according to claim 8, it is characterized in that, be provided with two first articulated jibs (11,12), it is mounted to the both sides that are hinged to aforesaid supporting case (10) and connects by aforesaid transverse bolt (21), described transverse bolt (21) engages two guiding grooves (22), and described two guiding grooves (22) are formed in the both sides of described box (10).
10. according to each described chair in the aforesaid claim, it is characterized in that, described back support (17) is to be made of arm, it is the opposite end of two arms (17a) that described arm has the end and the bifurcated that are connected in described backrest (3), and the end of described two arms (17a) is hinged to aforesaid seat support member (2b) around public lateral shaft (15).
11. according to each described chair in the aforesaid claim, it is characterized in that, accessory part (28) is associated to described fixed support structure (10), and described accessory part (28) can optionally be arranged in the primary importance, and described primary importance is used for the normal location of described chair; Perhaps be arranged in the second place, it prevents that described backrest from receding in the described second place; Perhaps be arranged in the 3rd position, in described the 3rd position, the assistant spring device (33) that forms the part of described accessory part (28) is determined the counteractive additional force that leans to motion backward of the described backrest of antagonism.
12. chair according to claim 11, it is characterized in that, described accessory part is installed into can rotate it around the axis of transverse bolt (21), described transverse bolt (21) is connected to described first articulated jib rigidly, this causes the distortion of first elastic device (26) after described backrest leans to backward, described first elastic device (26) is associated to the described fixed support structure of described chair.
13. chair according to claim 12, it is characterized in that, described accessory part (28) has different operating positions around the axis of described transverse bolt (21), and be characterised in that, the described operating position of described accessory part (28) can be selected by selector member (35), and described selector member (35) is installed into can rotate it around lateral shaft (36) on the described fixed support structure of described chair.
14. according to each described chair in the aforesaid claim, it is characterized in that, aforesaid assistant spring device is to be made of helical spring (33), described helical spring (33) can be with the axis orientation of described accessory part (28) around described transverse bolt (21), and be characterised in that, therein in operating position, described spring (33) is arranged between the described fixed support structure and aforesaid transverse bolt (21) of described chair, thereby the motion that recedes of described backrest is made a response.
CN200880018772A 2007-06-06 2008-06-05 Chair with oscillating backrest Pending CN101715310A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT000398A ITTO20070398A1 (en) 2007-06-06 2007-06-06 "CHAIR WITH OSCILLATING BACKREST"
ITTO2007A000398 2007-06-06
PCT/IB2008/001487 WO2008149224A1 (en) 2007-06-06 2008-06-05 Chair with oscillating backrest

Publications (1)

Publication Number Publication Date
CN101715310A true CN101715310A (en) 2010-05-26

Family

ID=39717799

Family Applications (1)

Application Number Title Priority Date Filing Date
CN200880018772A Pending CN101715310A (en) 2007-06-06 2008-06-05 Chair with oscillating backrest

Country Status (10)

Country Link
US (1) US20100164263A1 (en)
EP (1) EP2139365B1 (en)
JP (1) JP2010528749A (en)
CN (1) CN101715310A (en)
AT (1) ATE493048T1 (en)
BR (1) BRPI0812312A2 (en)
DE (1) DE602008004231D1 (en)
IT (1) ITTO20070398A1 (en)
RU (1) RU2437605C2 (en)
WO (1) WO2008149224A1 (en)

Cited By (21)

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CN103889273A (en) * 2011-06-08 2014-06-25 霍沃思公司 Seat, in particular an office chair
US9486081B2 (en) 2011-05-06 2016-11-08 Haworth, Inc. Item of seating furniture, in particular office chair
USD779250S1 (en) 2016-02-12 2017-02-21 Haworth, Inc. Portion of a back support for a chair
USD779252S1 (en) 2016-02-12 2017-02-21 Haworth, Inc. Back support for a chair
USD779254S1 (en) 2016-02-12 2017-02-21 Haworth, Inc. Armrests for a chair
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EP2139365A1 (en) 2010-01-06
RU2009149691A (en) 2011-07-20
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RU2437605C2 (en) 2011-12-27
US20100164263A1 (en) 2010-07-01

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