CN101166443B

CN101166443B - Seating, especially office chair

Info

Publication number: CN101166443B
Application number: CN2006800139802A
Authority: CN
Inventors: H·博克
Original assignee: Bock 1 GmbH and Co KG
Current assignee: Bock 1 GmbH and Co KG
Priority date: 2005-04-28
Filing date: 2006-04-27
Publication date: 2012-01-04
Anticipated expiration: 2026-04-27
Also published as: JP2008538950A; US20080100119A1; CN101166443A; EP1874160A1; EP1874160B1; WO2006114311A1; DE202005006980U1; DE102005020247B3

Abstract

The invention relates to a seating, especially an office chair. The aim of the invention is to provide, with relatively few constructive elements, an office chair that offers the comfort comparable to that obtainable by a synchronous mechanism. For this purpose, the seating comprises a seating element (1) having a seat (9), and a back element (2) articulated to the seat (1) and pivotable about a transversal axis (6). The seat (9) of the seating element (1) is configured in such a manner that, when the back element (2) is pivoted into a rearward position, the user is brought in a position simulating the movement of the back element (2), thereby allowing a movement of the body of the user in synchronicity with the movement of the back element, without the entire seating element carrying out such a synchronous movement.

Description

Chair, particularly office chair

Technical field

The present invention relates to a kind of chair, particularly a kind of office chair.

Background technology

So-called lazy-tongs are that prior art is known.Assembly in the minor structure of their formation office seat supports, said assembly helps the motion that is associated of seat and backrest.For this purpose, seat bracing or strutting arrangement and back rest supports device flexibly connect, thereby for example cause the antemarginal reduction at seat owing to the chair user leans to the receding of backrest of on said backrest, causing.This brings the comfort of significance degree to it, and is suitable for shaping.The shortcoming of this lazy-tongs is their suitable complex mechanical construction.This makes that the manufacturing of lazy-tongs is relatively costly.

Summary of the invention

The purpose of this invention is to provide a kind of scheme, this scheme provides such advantage with the effort and the cost of quite low structure aspects, promptly has the advantage of the comfort suitable with lazy-tongs.

This purpose realizes through the chair of claim 1.It is characterised in that: a kind of chair; Comprise only two primary structure assemblies, the just seat member of preferred immobilization and backrest element, thus seat member has seat surface; And the backrest element can pivot around axis of pitch, and is connected to seat member with hinged (jointed) mode.According to the present invention, seat surface designs in such a way, even when proper backrest pivots backward, for example when the user was leaning to it, the motion accompanying that the user carries out the motion of backrest element.In other words, because the design of seat surface, receding of backrest causes the user to be sunk towards the rear portion, and seat member itself can not move simultaneously.As a result, help user's body and be synchronized with the movement along with the motion of backrest element, whole seat member can not imitated said being synchronized with the movement simultaneously.As a result, user's center of gravity can be moved, and conversion takes place in motion, because the present invention allows the user to realize such motion, if this motion motion that the user will carry out when using suitable lazy-tongs to a great extent is similar.Through mode simple in structure and therefore equally very economic, the present invention helps to realize and the similar level of comfort that can realize through expensive significantly more lazy-tongs.Special advantage is to have prevented so-called " shirt disengaging effect (shirt stripping effect) ".

Advantageous embodiment of the present invention provides in the dependent claims.

In particularly advantageous embodiment of the present invention, seat surface comprises at least two different seating areas, and said seating area is arranged on back each other along the longitudinal direction of seat, and this seating area is installed additional on the mode of mat different at them.Term " mat " should be understood to the flexible design of any kind of expression seat surface, and is irrelevant with employed material.Except the shaping foam, any basically other elastomeric material can use, the for example combination of spring bag (spring packet) or material, and for example foam combines with the silicon pad.For example the use of dual area (dual zone) foam also is feasible.

Particularly advantageous is if at least one pillion zone comprises one type mat, compares with the front seat zone, and said mat allows the user to be absorbed in more.Therefore, thus move and when doing on the Background Region that weight is placed on seat like this " surrender (yielding) " when having seat backward as the user.In other words, when seating area was designed so that proper pressure is applied on the backrest, user's pelvis slided in the mat with the form of rolling.The result is the sequence of motion of high level of synchronization between backrest element and the user.

In addition, particularly advantageous is when the backrest element links to each other with seat member through rotating shaft, observes along the longitudinal direction of chair, and said rotating shaft is arranged on the front of chair post to the connecting portion of seat member.The position of rotating shaft greatly helps lend some impetus to seat position useful on the ergonomics.

Can realize smooth especially design, wherein, the spring element that in seat member, is provided with the basic horizontal position is set for to the prestress of backrest element.Depend on Model Design, the spring of any kind, for example extension spring is perhaps compressed spring, can be used as said spring element.

Description of drawings

To describe favourable design of the present invention through exemplary embodiments below, and be described in detail with reference to the attached drawings.In the accompanying drawing:

Fig. 1 shows the perspective view (first spring position) of the seat member that does not have seat surface,

Fig. 2 shows the cutaway view (first spring position) that passes seat member,

Fig. 3 shows the cutaway view (second spring position) that passes seat member,

Fig. 4 shows the other cutaway view (first spring position) that passes seat member, wherein has seat cushion,

Fig. 5 shows the other cutaway view (second spring position) that passes seat member.

The specific embodiment

Office chair of the present invention comprises seat member (seating element) 1 and backrest element (back element) 2.As shown in Figure 2, the seat member 1 that is arranged on the basic horizontal position is put 3 places at bearing and is hinged to backrest element 2.In other words, backrest element 2 is hinged to the bottom side 4 of seat member 1, thereby if for example the user is leaning to backrest element 2, it carries out banking motion 5 around rotation 6, and said rotation 6 extends with the right angle with respect to the longitudinal direction 7 of chair.

In situation of the present invention, it is inessential using the backrest element 2 of which kind of type.Backrest element 2 for example can have shell or shape such as netted.

Backrest element 2 can move to the position after further leaning on from its common position shown in the drawings, and returns once more.In order to change the sweptback resistance of backrest element 2, spring tension adjusting device 8 is set up, and will describe its function accurately below.

Seat member 1 comprises actual seat bearing and spring tension adjusting device 8 on the one hand, and said seat bearing is connected with backrest element 2 hinges.Because the pivotal point of mechanism is oriented near below the seat surface 9, therefore the order of the motion relevant with receding of backrest element 2 is similar to that lazy-tongs promote.It has alleviated so-called " shirt disengaging effect " especially.In other words, rotation 6 is conclusive with respect to the level and the vertical position of seat member 1 and backrest element 2 for attainable sequence of motion respectively.

In addition, all other mechanical parts are integrated in the seat member 1, for example comprise the holder 10 that is used for the handrail (not shown).In other words, the functional part of seat bearing and mechanism forms the single structure unit.Integrated and the compact structure of seat member 1 is obviously visible according to Fig. 1.The concrete advantage of this design is low cost of manufacture.In addition, the number of needed separate part significantly reduces, and this has further reduced manufacturing cost, and has increased security and prevent to lose efficacy.

Seat member 1 is characterised in that the conical recess (socket) 11 of more or less interfix, the upper end that is used to admit chair post (chair post), for example gas spring (not shown).

The base component 12 of seat member 1 comprises plastic base basically, and said substrate has a plurality of wall elements 14, and said wall elements is along the longitudinal direction 7 and horizontal direction 13 of chair.Said wall elements 14 not only is used to provide the needed stability of seat member 1.Simultaneously, can realize the material savings of certain degree.In addition, some wall elements 14 have other function.Therefore, they for example provide guiding piece or holding element for release lever 15, and said release lever is used for the height of gas spring to be regulated, and release lever 15 can be through key 16 operations simultaneously, and key 16 is integrated in the base component 12 equally.Another function of wall elements 14 is guiding or the driving shaft 17 that keeps spring tension adjusting device 8, thereby for example the executive component of handwheel form is connected to the free end 18 of driving shaft 17, and said executive component is not shown in Fig. 1.

Spring assembly is used to make the position of backrest element 2 after further lean on to turn back to its common position.Said spring assembly comprises the compression spring 19 of two annular cross sections, and said compression spring 19 is placed in the corresponding spring retainer 20, and said retainer is arranged in the base component 12.

Except when spring tension adjusting device 8 during by operation the spring angle can pass through the reformed fact of motion of spring hinge (spring hinge), compression spring 19 is arranged on the position of the basic horizontal in the seat member 1, the design that this permission is quite smooth.Shallow structure height helps visually attracting especially chair designs on the one hand.In addition, its allow to use various chair posts or gas spring, thereby even can satisfy abnormal requirement of height of seat aspect.

The position of said two compression springs 19 changes through U-shaped round iron 21, and the handle 22 of the U-shaped of round iron inserts in said two pole shape helical springs 19.Through with " base portion of U-shaped " 23 of said round iron 21 transversely yawing moment 24 move; Compression spring 19 is elevated on a side or reduces; Because the end 25 of round iron 21 is fixed to base component 12, the end opposite of compression spring 19 remains on their initial positions simultaneously.For this purpose, circular end 25 is arranged in one type the spherical groove (cup) 26 in the base component 12.

When pressure is applied to 2 last times of backrest element; Promptly when it tilts to the position after further leaning on; Nose hinged (nozzle) 28 is pressed against on the compression spring 19; Thereby and between compression spring 19 and backrest element 2, set up effectively connection, said nose 28 is coupled to axle 27, and passes base component 12 from following arrival round iron 21.In the form that is fit to, hinged nose 28 is designed to the U-shaped guiding piece, with the handle 22 of the U-shaped of admitting round iron 21.

Spring tension adjusting device a kind of changes the rotation that causes the coupled worm gear that connects 29 through the rotation of driving shaft 17, and this causes the rotation of cogwheel (cogwheel) 30 successively, and said cogwheel is bonded in the said worm gear 29.Cogwheel 30 is installed on the thread spindle 31, and said thread spindle transversely yawing moment 24 is provided with, and promptly vertically be provided with, and cantilever 32 is coupled to said thread spindle through screw thread (coil).Cantilever 32 characteristics are U-shaped cams 33, and said cam depends on the direction of rotation of driving shaft 17 with round iron 21 up or down.Therefore, the position of compression spring 19 from first spring position (Fig. 1,2,4) of bottom be adjusted to top second spring position (Fig. 3, Fig. 5).In other words, in this way, it is feasible that " unable (forceless) " spring tension is regulated.Only compress the position of spring 19 and therefore hinge angle be changed.In other words, spring tension is regulated through combining lever principle to realize, because compression spring 19 is bonded in hinged nose 28 diverse location.Through moving pivotal point along outside horizontal direction 24, lever arm is lengthened out respectively or shortens, thus big perhaps being compressed of less degree of pole shape helical spring 19.

As shown in Figure 4, the mat of seating area 9 (upholstery) 34 comprises the shaping foam, and is connected to seat substrate 39, and said substrate may be fitted to the holder 40 that is fit on the base component 12.Because the concrete design of mat 34, when backrest element 2 is moved, user's rolling downwards more or less towards the rear portion.He slides in the foam.Therefore foam should be freely towards seat surface end 35, thereby can stretch backward.In order to achieve this end, the open design that does not have the mat 34 of any limiting element (borderingelement) at the place, rear portion is preferred.

Seat surface 9 is divided into two

different seating areas

36,37, and said two seating areas are arranged on back each other along the longitudinal direction 7 of seat, and they installed additional mat aspect different.Form for the seat surface 9 of this instance; About 30% to 40% the front seat of the total length zone 36 that constitutes mat 34 has " standard " mat thickness; And rear portion seating area 37 (length overall 70% to 60% between) be equipped with different mat 34, it allows user to sink towards the rear portion.Shown in instance in, the mat thickness in pillion zone 37 is than at least 20 millimeters of the mat thickness height of front seat regional 36.Zone 37 transition is preferably very soft and level and smooth from anterior seating area 36 to pillion, has no projection.Specifically, the transitional region 38 of horizontal S form through elongation has realized good effect.The transition in zone 37 is configured such that the user who is in common (" usually ") seated position will mainly be placed on his weight on the front seat zone from anterior seating area 36 to pillion.When pressure was placed on the backrest, user's pelvis was rolled in the pillion zone on the S of level.Therefore the user follows the motion of backrest and moves backwards downwards.

Reference numerals list:

1 seat member

2 backrest elements

3 bearings point

The bottom side of 4 seat member

5 tilt

6 rotations

The longitudinal direction of 7 chairs

8 spring tension adjusting devices

9 seat surface

10 handrail holders

11 conical recess

12 base component

The horizontal direction of 13 chairs

14 wall elements

15 release levers

16 release keies

17 driving shafts

The free end of 18 driving shafts

19 compression springs

20 spring retainers

21 round iron

22 U-shaped handles

23 U-shaped base portions

24 lateral deflection directions

The end of 25 round iron

26 spherical grooves

27

28 pivot nose

29 worm gears

30 cogwheels

31 thread spindles

32 cantilevers

33 cams

34 mats

35 seat surface ends

36 front seat zone

37 pillions zone

38 transitional regions

39 seat substrates

40 holders

Claims

1. chair; Comprise the have seat surface fixed seating element (1) and the backrest element (2) of (9), said backrest element (2) can center on axis of pitch (6) and pivot, and is connected to seat member (1) in hinged way; Thereby the seat surface (9) of seat member (1) designs in such a way; Even proper backrest element (2) is when being pivoted to rear positions, the motion accompanying that the user carries out the motion of backrest element (2)

Seat surface (9) comprises at least two seating areas (36; 37); That is, at least one pillion zone (37) and front seat zone (36), said at least one pillion zone (37) and said front seat zone (36) are provided with before and after the longitudinal direction (7) of seat; Said at least one pillion zone (37) and said front seat zone (36) are different aspect the type of employed mat (34)

Said at least one pillion zone (37) comprises mat (34); Compare with front seat zone (36); Said mat allows the user to be absorbed in more, thereby is applied to said backrest element (2) last time by the user when pressure, and user's pelvis slides in the mat with the form of rolling; Cause the user following the motion motion backwards downwards of backrest

The mat in said at least one pillion zone (37) and said front seat zone (36) comprises elastomeric material; And be designed to do not have any limiting element at the place, rear portion; Thereby said elastomeric material is freely towards the rear end of seat surface (9), thereby can stretch backward

The transition in zone is soft and level and smooth from anterior seating area to pillion, does not have any projection,

Transitional region has the form of the level " S " of elongation,

Front seat zone constitutes the 30%-40% of mat total length, and the pillion zone constitute the mat total length 70-60% and

High at least 20 millimeters of the mat thickness in the pillion zone mat thickness more regional than front seat.

2. chair as claimed in claim 1 is characterized in that, observes along the longitudinal direction (7) of seat, and said axis of pitch (6) is arranged on the front of the jockey (11) of chair post.

3. chair as claimed in claim 1 is characterized in that, comprises spring element (19), and said spring element (19) is arranged on the basic horizontal position in seat member (1), is used for to backrest element (2) prestress.

4. chair as claimed in claim 1 is characterized in that, said chair is an office chair.

5. chair as claimed in claim 1 is characterized in that, the mat in said at least one pillion zone (37) and said front seat zone (36) comprises contoured foam.