EP0723753B1 - Arretiermechanik für die neigbare Lehne eines Stuhles - Google Patents
Arretiermechanik für die neigbare Lehne eines Stuhles Download PDFInfo
- Publication number
- EP0723753B1 EP0723753B1 EP96100027A EP96100027A EP0723753B1 EP 0723753 B1 EP0723753 B1 EP 0723753B1 EP 96100027 A EP96100027 A EP 96100027A EP 96100027 A EP96100027 A EP 96100027A EP 0723753 B1 EP0723753 B1 EP 0723753B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- locking
- movable
- chair
- backrest
- spring
- 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
- 230000007246 mechanism Effects 0.000 title claims description 17
- 230000000903 blocking effect Effects 0.000 title 1
- 230000009471 action Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002996 emotional effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
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
- A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
- A47C1/024—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination
- A47C1/026—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination by means of peg-and-notch or pawl-and-ratchet mechanism
Definitions
- the invention relates to a locking mechanism according to the Preamble of claim 1.
- Locking mechanism includes one at the front end of the lower one Leg of the angular backrest support arranged Locking plate, which is in the swivel plane of the leg Recesses in the form of Has holes.
- the lower leg of the backrest support swings around a bearing in the area of the center of the seat fixed to the base of the chair resting base is, and the leg is locked by movable perpendicular to the swivel plane of the leg Indexing plungers that can be inserted into the holes in the indexing plate are.
- the bolts have retaining lugs that reach behind the holes in the locking plate so that they only then be moved out of the holes in the locking plate can if the user backrest against the restoring force the forward spring pushes back and thus the front one Part of the lower leg of the backrest support upwards emotional.
- the movement of the locking pin takes place via a Mechanism that holds the bolt in two stable positions can hold, namely in a front position in which the bolt is disengaged and in a rear position, in which the bolt in a recess of the locking plate intervenes.
- This known locking mechanism has the disadvantage that the Movement of the locking pin must take place under load. The requires an excessive interpretation of the elements of the Locking mechanism, what from production engineering and price reasons is undesirable in itself. It is also the noise development when actuating the mechanics still reducible.
- DE 36 29 882 C2 describes a locking mechanism described, in which one can be operated from the outside Lever 22 pressure can be exerted on a push rod 20.
- the other leg of the angle lever is designed as a locking part 12, which in the opposite locking part 11 can be locked.
- DE 43 03 324 A1 describes a locking device known, in which the backrest support 16 with support tubes 17, which is pivotable about an axis 12 by means of a toothing 40 and a spline 42 in different Inclination positions can be determined.
- This known device is also voluminous and complex.
- This known construction is relatively weak designed because they do not also affect the seat Has to absorb user forces.
- the essence of the invention is that in the locking mechanism according to the invention the switching process from Locking process is physically separate. So he can Locking hook optimally on its locking function be designed during the bistable switch that Shift rod and the inclined plane arranged at the end be dimensioned relatively weak and simple can because they only have one type of relay function on the Exercise the locking hook.
- the lower leg of the backrest support 2 is one Office swivel chair shown at its front end has a toothing with teeth and four tooth gaps 3, the runs in the pivoting plane of the backrest support 2.
- the "first bearing” which is attached to the support base 16.
- This carrier base 16 is in turn by means of the recording 15 by the (not stand) of the chair.
- the backrest support 2 is under the return force of one (also not shown) spring, which is the backrest pulls forward, and thus the front part of the shown backrest support 2 down.
- Locking hook 1 can be seen, which around the bearing 14, the "second Bearing ", is pivotable. It has a lower end Nose that engages in one of the tooth gaps 3 and thus can lock the backrest support 2. At its top the locking hook 1 is under the pressure of a spring 4, the "first feather” which the nose at the bottom of the Pull the locking hook 1 out of the tooth space 3 tries.
- the shift rod 6 is moved by actuating the bistable switch, the details of which are shown in FIG. 3:
- the guide body 8 can be seen there, in which the sliding body 7 can be moved in the direction of the arrows. It slides on the sliding pin 17 and has a running groove 10 in which the pin of the sliding block 9 runs.
- This sliding block 9 is movable in the guide body 8 perpendicular to the direction of movement of the sliding body 7.
- the sliding body 7 is pressed by the force of the spring 11, the "second" spring, in the direction of the "front” position defined above.
- the slider 7 can now by the user of the chair a preferably located under the seat (not button) towards the "rear" position be pressed. This causes the pin to snap onto the sliding block 9 from its first stable position in the running groove 10 and is by means of the special design of the groove 10 in his second stable position.
- the sliding body 9 can thus two in the direction of the shift rod 6 take stable positions one behind the other, and so that the inclined level 5 in the two desired positions for locking and unlocking the backrest support 2 spend.
- This switching principle basically corresponds the one used for the ballpoint pen.
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)
Description
- Fig.1
- die Seitenansicht des unteren Schenkels des Lehnenträgers mit Arretiermechanik,
- Fig.2
- die Draufsicht der in Figur 1 dargestellten Teile, und
- Fig.3
- die Einzelteile des bistabilen Schalters.
Dort ist der Führungskörper 8 zu sehen, in dem der Gleitkörper 7 in Richtung der Pfeile bewegbar ist. Er gleitet auf den Gleitzapfen 17, und weist eine Laufnut 10 auf, in welcher der Zapfen des Gleitsteines 9 läuft. Dieser Gleitstein 9 ist in dem Führungskörper 8 senkrecht zur Bewegungsrichtung des Gleitkörpers 7 beweglich. Der Gleitkörper 7 wird durch die Kraft der Feder 11, der "zweiten" Feder, in Richtung der weiter oben definierten "vorderen" Position gedrückt.
Selbstverständlich darf es nicht passieren, dass die Lehne beim Schalten vom arretierten in den nicht arretierten Zustand unkontrolliert nach vorne schnellt. Das wird in allen vier Arretierpositionen dadurch erreicht, dass - solange die Lehne nicht von einem Benutzer nach hinten gedrückt wird - der Arretierhaken 1 aufgrund des von der Lehnen-Rückholfeder verursachten Reibschlusses in der Zahnlücke 3 verbleibt, auch wenn die schiefe Ebene 5 den Arretierhaken 1 an sich frei gegeben hat. Der Reibschluss wird erst aufgehoben, wenn der Benutzer die Lehne zurückdrückt und dadurch die Wirkung der Lehnen-Rückholfeder aufhebt.
- 1
- Arretierhaken
- 2
- Lehnenträger
- 3
- Zahnlücken
- 4
- erste Feder
- 5
- schiefe Ebene
- 6
- Schaltstange
- 7
- Gleitkörper
- 8
- Führungskörper
- 9
- Gleitstein
- 10
- Laufnut
- 11
- zweite Feder
- 12
- erstes Lager
- 13
- Mechanikkasten
- 14
- zweites Lager
- 15
- Aufnahme für Standsäule
- 16
- Trägerbasis
- 17
- Gleitzapfen
Claims (4)
- Arretiermechanik für die neigbare Lehne eines Stuhles, wobei ein winkelförmiger Lehnenträger (2) mit einem unteren und einem oberen Schenkel vorgesehen ist, und der untere Schenkel des Lehnenträgers (2) an einem am Sitzunterteil angeordneten Lager (12) schwenkbar gelagert ist und an seinem vorderen Ende in Schwenkrichtung aufeinanderfolgende Ausnehmungen aufweist, in welche zwecks Arretierung der Lehne in einer bestimmten Position ein Arretierelement einrastbar ist, dadurch gekennzeichnet, dass die Ausnehmungen nach vorne offene Zahnlücken (3) sind, und das Arretierelement ein in diese Zahnlücken (3) ein- und ausrastbarer Arretierhaken (1) ist, welcher unter der Wirkung einer Feder (4) aus-, und unter der Wirkung einer senkrecht zur Schwenkebene des Arretierhakens (1) bewegbaren schiefen Ebene (5) einschwenkbar ist, und die schiefe Ebene (5) am Ende einer Schaltstange (6) angeordnet ist, die mittels eines bistabilen Schalters in die für die schiefe Ebene (5) erforderlichen Positionen bewegbar ist.
- Arretiermechanik nach Anspruch 1, dadurch gekennzeichnet, dass der bistabile Schalter einen in einem Führungskörper (8) in Richtung der Schaltstange (6) bewegbaren und mit dieser verbundenen Gleitkörper (7) sowie einen senkrecht zur Bewegungsrichtung des Gleitkörpers (7) in dem Führungskörper (8) bewegbaren Gleitstein (9) umfasst, und in dem Gleitkörper (7) eine Laufnut (10) vorgesehen ist, in welcher der Gleitstein (9) mittels eines Zapfens geführt ist, und der Gleitkörper (7) in seiner Bewegungsrichtung unter der Kraft einer zweiten Feder (11) steht.
- Arretiermechanik nach Anspruch 2, dadurch gekennzeichnet, dass der Gleitkörper (7) mittels einer dem Benutzer des Stuhles zugänglichen Taste bewegbar ist.
- Arretiermechanik nach Anspruch 1, dadurch gekennzeichnet, dass der Arretierhaken (1) um das an der Trägerbasis (16) des Stuhles befestigte zweite Lager (14) schwenkbar ist, mit seiner Rückseite unterhalb des Lagers (14) auf der an der Schaltstange (6) befestigten schiefen Ebene (5) gleitet, und oberhalb des Lagers (14) unter der Druckkraft der ersten Feder (4) steht.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19502649 | 1995-01-28 | ||
DE19502649A DE19502649A1 (de) | 1995-01-28 | 1995-01-28 | Arretiermechanik für die neigbare Lehne eines Stuhles |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0723753A1 EP0723753A1 (de) | 1996-07-31 |
EP0723753B1 true EP0723753B1 (de) | 1999-04-21 |
Family
ID=7752519
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96100027A Expired - Lifetime EP0723753B1 (de) | 1995-01-28 | 1996-01-03 | Arretiermechanik für die neigbare Lehne eines Stuhles |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0723753B1 (de) |
AT (1) | ATE179055T1 (de) |
DE (2) | DE19502649A1 (de) |
ES (1) | ES2134517T3 (de) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE807314C (de) * | 1948-10-02 | 1951-06-28 | Pannes Patent Polstermoebel | Sessel mit verstellbarer Rueckenlehne |
DE2338142A1 (de) * | 1973-07-27 | 1975-03-13 | Wilde & Spieth | Vorrichtung zum feststellen eines schwenkbaren traegers der rueckenstuetze eines buerostuhles |
DE2931915A1 (de) * | 1979-08-07 | 1981-02-26 | Keiper Automobiltechnik Gmbh | Gelenkbeschlag fuer sitze mit verstellbarer rueckenlehne, insbesondere fuer kraftfahrzeugsitze |
CH652902A5 (de) * | 1980-11-21 | 1985-12-13 | Syntech Sa | Steuerkopf zur betaetigung der steuerstange der ventilanordnung einer gasfeder. |
GB2108575A (en) * | 1981-10-28 | 1983-05-18 | Pledge Office Chairs | Tilting mechanism for a chair |
EP0233974B1 (de) * | 1986-02-27 | 1989-10-11 | Christof Stoll GmbH & Co KG | Neigungsvorrichtung für Sitzmöbel |
DE3629882A1 (de) * | 1986-09-02 | 1988-03-10 | Girsberger Holding Ag | Sicherheitsverriegelung |
DE4303324A1 (de) * | 1993-02-05 | 1994-08-11 | Bock Martin Kunststoff | Sitzmöbel, insbesondere Bürostuhl |
-
1995
- 1995-01-28 DE DE19502649A patent/DE19502649A1/de not_active Withdrawn
-
1996
- 1996-01-03 DE DE59601686T patent/DE59601686D1/de not_active Expired - Fee Related
- 1996-01-03 ES ES96100027T patent/ES2134517T3/es not_active Expired - Lifetime
- 1996-01-03 EP EP96100027A patent/EP0723753B1/de not_active Expired - Lifetime
- 1996-01-03 AT AT96100027T patent/ATE179055T1/de not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE59601686D1 (de) | 1999-05-27 |
DE19502649A1 (de) | 1996-08-01 |
ES2134517T3 (es) | 1999-10-01 |
EP0723753A1 (de) | 1996-07-31 |
ATE179055T1 (de) | 1999-05-15 |
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