EP0406706B1 - Sperrvorrichtung für Stühle, insbesondere Bürostühle - Google Patents
Sperrvorrichtung für Stühle, insbesondere Bürostühle Download PDFInfo
- Publication number
- EP0406706B1 EP0406706B1 EP90112383A EP90112383A EP0406706B1 EP 0406706 B1 EP0406706 B1 EP 0406706B1 EP 90112383 A EP90112383 A EP 90112383A EP 90112383 A EP90112383 A EP 90112383A EP 0406706 B1 EP0406706 B1 EP 0406706B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blocking
- locking
- bolt
- disposed
- members
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- 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
Definitions
- the invention relates to a locking device for chairs, in particular office chairs according to the preamble of the main claim, namely for chairs on which the seat and / or the backrest are cushioned adjustable with respect to the chair frame and can be locked in at least one position with a locking device on the frame.
- Tilt-adjustable work or office chairs are known in the most varied of shapes and equipped with a wide variety of adjustment mechanisms, and usually a suspension comfort is also provided, which is achieved by springs included in the adjustment mechanism. Such chairs must be lockable in the normal or rest position and, if desired, also in further intermediate positions, provided that the area outside the normal position is not intended to act as an elastically sprung area. Locking devices on such chairs are also known in the most varied of embodiments, as a rule in the respective adaptation and integration to the respective adjustment mechanism or the given structural design of the chairs.
- an incline-adjustable chair with a locking device in which two identical locking members, which are spaced apart from one another and are inclined in the same direction and are arranged at an inclination in the same direction and are fixedly inclined in the same direction, with their identical, s -shaped slots encompass a locking pin on the chair frame.
- a blocking of the locking position within the locking device is not possible and without additional locking means, but which could only be provided on the actuating lever, a securely blocked locking position is not guaranteed.
- this is intended at all, only a very limited number of engagement recesses for several locking positions could be accommodated in locking devices of this type, since the locking lugs between two recesses must have enough "meat" for reasons of stability.
- the locking device Due to the design of the locking device according to the invention, it is only loosely attached to the aforementioned axis or the axle piece and is only connected to the entire actuating mechanism at this point, assumes an exposed position to this extent and can therefore also be installed very easily.
- the locking device is preferably designed in such a way that one locking member is dimensioned a maximum of twice as wide as the other and is provided with a recess which forms a groove with the other locking member, in which a two-armed pivot lever is mounted on the wider locking member, the lower lever arm with a driving pin in a slot guide of the narrower locking member engages and on whose other lever arm the actuator attached to the wider locking member engages and between the and the wider locking member the spring is arranged clamped.
- the two-armed swivel lever can advantageously be integrated into the locking device, which facilitates the unlocking of the lock.
- the locking device is in principle very simple and in particular can only be coupled at one point to a part of the seat and / or the backrest that is inclined, i.e. does not require any specific adaptation to the adjustment mechanism, such a locking device can be largely independent of the specific design of the adjustment mechanisms of chairs of this type are used.
- the bearing eyes of the two locking members receiving the axis are advantageously closed with detachable bearing covers.
- the backrest 2 which is kinked under the seat 1, pivots about the joint I and the seat 1, in addition somewhat displaceably about the joint II, the seat 1 and the backrest 2 being articulated with one another in the axis 3 are coupled. If the backrest 2 is inclined in the direction of the arrow C, the seat 1 is accordingly taken along in the direction of the arrow D.
- the locking device is articulated on the axis 3 and, like a clamp, comprises the locking bolt 6 arranged stationary on the frame 7.
- the locking device can be pivoted from two relative to one another about the common axis 3, which belongs to the seat 1 and in this case also to the backrest 2 and can be moved therewith by means of an actuator 4, formed against each other with a spring 5 to the locking pin 6 of the frame 7 in the locking position and provided with mutually aligned locking slots 8, 9 locking members 10, 11.
- the locking slots 8, 9 are penetrated by the locking pin 6 and have a length L which corresponds to the predetermined maximum inclination setting of the seat and backrest.
- the outer contours of the two locking members 10 and 11 are concerned, they are identical, as can be seen from FIG. 6, which corresponds to the locking position of both locking members.
- the locking slot 8 in the locking member 10 according to FIG. 2 has the shape shown, it being essential that in the lower region a locking lug 14 projects into the slot. Notwithstanding this, the locking slot 9 is formed in the other locking member 11, which is a simple slot slot, at the lower end of which a cross section of the locking pin 6 adapted lateral recess 9 'is provided, through which the locking lug 15 is limited at the bottom. It is also essential that the locking lug 15 is arranged radially higher than the other locking lug 14 on the locking member 10 about the locking pin cross-section with respect to the common axis 3. If these locking members 10, 11 are placed immediately adjacent to one another on the axis 3, then they turn this in the sense of FIG. 6, which corresponds to the locked position.
- the locking pin is encompassed or clasped by the two locking lugs 14, 15, which means that the axis 3 can no longer move with respect to the locking pin 6, ie seat 1 and backrest 2 are also blocked in normal or rest position.
- the compression spring 5, which spreads itself on the locking members 10, 11, cannot have an effect on the locking members, since this is opposed by the locking bolt 6 passing through the locking members.
- the one locking member 11 is dimensioned approximately twice as wide as the other and provided with a recess 16 (FIG.
- an actuating lever arranged on the side of the chair is designed, for example, in the form of a construction train Actuator 4 actuated and compressed by the pivot lever 19, the compression spring. Since the pivot lever 18 is mounted on the wider locking member 11 with a bolt 24 and on the other hand engages with a driver pin 20 in the slot guide 21 of the narrower locking member 12, the locking members are pivoted relative to one another and with respect to the locking bolt so that the two locking lugs 14, 15th release the locking bolt, the two locking slots 8, 9 being assigned to each other in such a way that there is an elongated hole guide for the locking bolt, the flanks of which are formed on the one hand by the edge 8 'of the locking slot 8 and on the other hand by the edge 13' of the locking slot 9.
- This elongated hole defined by both locking slots has the total length L, as indicated in FIGS. 2, 4.
- a chair according to FIG. 1 with seat 1 and backrest 2 can be rocked to a certain extent, specifically in an inclination range which is predetermined by the length L of the slot.
- the backrest and seat follow the body movements by a corresponding cushioning of the adjustment mechanism, which requires no further explanation here.
- the tension cord 4 is relieved by releasing the control lever (not shown), the length of the rocking path is shortened by the cross section of the locking pin 6.
- the locking device can be further developed in such a way that in addition to the locking in the normal position, further locking positions can be assumed.
- the slot 9 there is in the flank 13 the slot 9 at least one further recess 22 and this opposite a locking bolt blocking extension 23 arranged on the slot 8 of the other locking member 10 on the opposite slot flank 12.
- the locking members 10, 11 shown in FIG. 9 and designed somewhat differently in their outer shape are in this case equipped with a compression spring 5 arranged below the locking slots.
- the locking members are of the same width, but have lateral and mutually directed extensions, between which the compression spring is arranged.
Landscapes
- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
- Chairs Characterized By Structure (AREA)
- Interface Circuits In Exchanges (AREA)
- Pens And Brushes (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT90112383T ATE83626T1 (de) | 1989-07-01 | 1990-06-29 | Sperrvorrichtung fuer stuehle, insbesondere buerostuehle. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3921757 | 1989-07-01 | ||
DE3921757A DE3921757A1 (de) | 1989-07-01 | 1989-07-01 | Stuhl, insbesondere buerostuhl |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0406706A1 EP0406706A1 (de) | 1991-01-09 |
EP0406706B1 true EP0406706B1 (de) | 1992-12-23 |
Family
ID=6384149
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90112383A Expired - Lifetime EP0406706B1 (de) | 1989-07-01 | 1990-06-29 | Sperrvorrichtung für Stühle, insbesondere Bürostühle |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0406706B1 (el) |
AT (1) | ATE83626T1 (el) |
DE (2) | DE3921757A1 (el) |
ES (1) | ES2037510T3 (el) |
GR (1) | GR3006657T3 (el) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9204874U1 (de) * | 1992-04-08 | 1992-06-17 | SIFA Sitzfabrik GmbH, 8458 Sulzbach-Rosenberg | Sitzträger für Stühle, insbesondere Drehstühle |
DE9211244U1 (de) * | 1992-08-21 | 1992-10-29 | Friedrich W. Dauphin GmbH & Co, Entwicklungs- und Beteiligungs-KG, 8561 Offenhausen | Stuhl |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3627252A (en) * | 1969-12-22 | 1971-12-14 | Yoshiomi Yamaguchi | Tilting chair |
DE3727784A1 (de) * | 1987-08-20 | 1989-03-02 | Kloeber Gmbh & Co | Arbeitsstuhl mit verschwenkbarer sitzschale |
-
1989
- 1989-07-01 DE DE3921757A patent/DE3921757A1/de not_active Ceased
-
1990
- 1990-06-29 AT AT90112383T patent/ATE83626T1/de not_active IP Right Cessation
- 1990-06-29 DE DE9090112383T patent/DE59000645D1/de not_active Expired - Fee Related
- 1990-06-29 ES ES199090112383T patent/ES2037510T3/es not_active Expired - Lifetime
- 1990-06-29 EP EP90112383A patent/EP0406706B1/de not_active Expired - Lifetime
-
1992
- 1992-12-24 GR GR920402750T patent/GR3006657T3/el unknown
Also Published As
Publication number | Publication date |
---|---|
DE59000645D1 (de) | 1993-02-04 |
ATE83626T1 (de) | 1993-01-15 |
GR3006657T3 (el) | 1993-06-30 |
ES2037510T3 (es) | 1993-06-16 |
DE3921757A1 (de) | 1991-01-10 |
EP0406706A1 (de) | 1991-01-09 |
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