EP2727496A1 - Ratchet device - Google Patents
Ratchet device Download PDFInfo
- Publication number
- EP2727496A1 EP2727496A1 EP13190438.5A EP13190438A EP2727496A1 EP 2727496 A1 EP2727496 A1 EP 2727496A1 EP 13190438 A EP13190438 A EP 13190438A EP 2727496 A1 EP2727496 A1 EP 2727496A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plate
- wings
- wing
- holes
- pin
- 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.)
- Withdrawn
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
- A47C1/022—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
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/50—Supports for the feet or the legs coupled to fixed parts of the chair
- A47C7/506—Supports for the feet or the legs coupled to fixed parts of the chair of adjustable type
- A47C7/5066—Supports for the feet or the legs coupled to fixed parts of the chair of adjustable type by rotation
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/36—Support for the head or the back
- A47C7/38—Support for the head or the back for the head
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/36—Support for the head or the back
- A47C7/40—Support for the head or the back for the back
- A47C7/402—Support for the head or the back for the back adjustable in height
Definitions
- the present invention relates to a ratchet device.
- invention in object is advantageously used in upholstered furniture field in order to allow the controlled movement of movable parts, such as headrests, footrests, armrests or equivalent elements furniture, sofas, armchairs or the like, to which the following description explicitly referes to without thereby losing in generality.
- movable parts such as headrests, footrests, armrests or equivalent elements furniture, sofas, armchairs or the like, to which the following description explicitly referes to without thereby losing in generality.
- One of the mentioned wings of the device is fixed on a portion or edge of the headrest , while the other wing is fixed to a portion or edge of a fixed part, the backrest of the sofa , thereby allowing to realize a relative movement of rotation and opening in the upright position of the headrest relative to the backrest in such a manner as to raise and support in an optimal way the head of the user sitting on the sofa.
- the structure of the ratchet devices of the known type described above is such as to allow a rotation of the opening of a wing with respect to the other wing of a limited angle with respect to the initial closed position, specifically not more than 90 degrees, or between a closed position in which the two wings are arranged orthogonal to each other, and a position of complete opening in which the two wings are arranged aligned with each other and from the side opposite the hinge.
- the scope of the present invention is to provide an improved device able to be applied to a sofa or armchair and allow to realize a lifting handling of the headrest relative to the backrest of the sofa or armchair with an angle even greater than 90 degrees.
- D globally indicates a ratchet device adapted to be used preferably but not limited in the upholstered furniture industry for the movement of movable parts, such as the headrest, or equivalent elements furniture, sofas, armchairs or similar ( known and not shown ).
- the device D includes an element 1 with two wings 2 and 3 hinged together in correspondence of a central portion 4 of the element 1 via a coupling ratachet mechanism 5.
- the wings 2 and 3 are therefore movable in rotation each other around a fixing pin 6 with a movement of opening / closing generated by the mechanism 5 from which the pin 6 is part of.
- the mechanism 5 also comprises the following elements, arranged in pairs opposite side with respect to the two wings 2 and 3 and fixed between them perfectly fitting into a single assembly by means of locking rivets 7 and 7a:
- the pawls 18 are adapted to engage in the teeth of a single sector S of the mechanism 5 defined by the alignment of the sectors 9 and 9' as a result of the coupling of the semi-circular plates 8 and 8' between the wings 2 and 3, so forming a two-way moving and locking ratchet system.
- the wing 2 has a longitudinal dimension greater than the wing 3, and it is provided with two quarries slits 26 identical to the aforementioned slits 16,16' described above, of a passage hole 27 for the pin 6, and of a pair of holes 28 for the passage of respective rivets 7 and which blocks the cited wing 2 between the plates 14,14'; the wing 3 has a pair of holes 29 for the passage of respective rivets 7a and which blocks the cited wing 3 between the plates 8,22, and 8',22'. Both the wing 2 and wing 3 also have a series of holes 30 for the attachment in known manner to fixed parts and / or furniture of sofas or armchairs.
Abstract
A ratchet device (D) comprising an element (1) with two wings (2,3) pivoted to each other at a central portion (4) of said element (1), and a coupling mechanism (5) for the movable coupling of said wings (2,3) at said central portion (4), and the movement of said wings (2,3) between two limit positions (A,B); said mechanism (5) comprises plate means (8,8',14,14',22,22') adapted to clamp to each other said wings (2,3), and provided with a single semicircular sector (S) and with toothed lock means (8) in two-way acting on said semicircular sector (S).
Description
- The present invention relates to a ratchet device.
- In particular, invention in object is advantageously used in upholstered furniture field in order to allow the controlled movement of movable parts, such as headrests, footrests, armrests or equivalent elements furniture, sofas, armchairs or the like, to which the following description explicitly referes to without thereby losing in generality.
- In the production of sofas or armchairs, in order to allow and facilitate the controlled movement of the moving parts as a headrest or footrest is known to use devices ratchet, in general defined by an element with two wings hinged together in correspondence of a portion central element and mobile in rotation between them with a movement of opening / closing by means of a toothed ratchet mechanism.
- One of the mentioned wings of the device is fixed on a portion or edge of the headrest , while the other wing is fixed to a portion or edge of a fixed part, the backrest of the sofa , thereby allowing to realize a relative movement of rotation and opening in the upright position of the headrest relative to the backrest in such a manner as to raise and support in an optimal way the head of the user sitting on the sofa. Currently , the structure of the ratchet devices of the known type described above is such as to allow a rotation of the opening of a wing with respect to the other wing of a limited angle with respect to the initial closed position, specifically not more than 90 degrees, or between a closed position in which the two wings are arranged orthogonal to each other, and a position of complete opening in which the two wings are arranged aligned with each other and from the side opposite the hinge.
- This does not allow to achieve an opening of the headrest, adequate to support the user's head, relative to the backrest of the sofa even when the backrest is reclined and is movable with respect to the traditional substantially vertical position.
- The scope of the present invention is therefore to solve the drawback of the prior art described above.
- In particular, the scope of the present invention is to provide an improved device able to be applied to a sofa or armchair and allow to realize a lifting handling of the headrest relative to the backrest of the sofa or armchair with an angle even greater than 90 degrees. The structural and functional characteristics of the invention in-suit and its advantages compared to the known art will be clearer and more evident by the claims below, and in particular from an examination of the following description, referring to the attached drawings, which show the schematic of a preferred but non-limiting embodiment of a ratchet device, wherein:
-
Figure 1 is an exploded view of the components of the ratchet device in object; -
Figure 2 is a front view of the device ofFigure 1 in a first operating position; -
Figure 3 is a perspective view of the device in the operative position illustrated inFigure 2 ; -
Figure 4 is a perspective view of the device ofFigure 1 in a second operating position, and -
Figure 5 represents the device offigure 1 in a third operating position. - With reference to the attached figures, D globally indicates a ratchet device adapted to be used preferably but not limited in the upholstered furniture industry for the movement of movable parts, such as the headrest, or equivalent elements furniture, sofas, armchairs or similar ( known and not shown ).
- As illustrated in
Figures 1 to 5 , the device D includes anelement 1 with twowings central portion 4 of theelement 1 via acoupling ratachet mechanism 5. - The
wings fixing pin 6 with a movement of opening / closing generated by themechanism 5 from which thepin 6 is part of. - The
mechanism 5 also comprises the following elements, arranged in pairs opposite side with respect to the twowings rivets - a first and a
second plate 8 and 8 ' , each of which is provided with a cavesemicircular sector 9,9' provided with a singletoothed edge 10,10', ahole 11,11' suitable to accommodate thepin 6 , and twoadditional holes rivets 7a; - a third and a
fourth plate 14 and 14', each of which is arranged in contact with arelative plate 8,8', it is provided with apair 15,15' ofslits quarries 16,16' with various shape and oriented each other in the opposite way, and designed to accommodaterespective springs 17 acting on related blocks or pawls 18 (only onespring 17 and apawl 18 shown for simplicity inFigure 1 ); eachplate 14,14' also has ahole 19,19' adapted to receive thepin 6, and twoadditional holes rivets 7; - a fifth and a
sixth locking plate 22,22', each provided with twoholes respective rivets 7a. - In this way, the
pawls 18 are adapted to engage in the teeth of a single sector S of themechanism 5 defined by the alignment of thesectors 9 and 9' as a result of the coupling of thesemi-circular plates 8 and 8' between thewings - A pair of
washers 25 and 25', finally, completes themechanism 5. - As illustrated in
Figure 1 and inFigures 3 ,4 and5 , thewing 2 has a longitudinal dimension greater than thewing 3, and it is provided with two quarries slits 26 identical to theaforementioned slits 16,16' described above, of apassage hole 27 for thepin 6, and of a pair ofholes 28 for the passage ofrespective rivets 7 and which blocks the citedwing 2 between theplates 14,14'; thewing 3 has a pair ofholes 29 for the passage ofrespective rivets 7a and which blocks the citedwing 3 between theplates wing 2 andwing 3 also have a series ofholes 30 for the attachment in known manner to fixed parts and / or furniture of sofas or armchairs. - The mounting of the
wings mechanism 5, with thepawls 18 able to engage in the unique semicircular sector with toothed edge of thesame mechanism 5, therefore forms a two-way ratchet device able to allow the twowings pin 6, being moved between a closing position A (figures 2 and3 ), in correspondence of which thewings figure 5 ), in correspondence of which thewing 3 is able to achieve in respect of thewing 2 an limit angles β so as to define an opening movement with respect to the closed position of approximately 150 degrees, and then beyond the limit position of opening (figure 5 ) with two wings aligned as the traditional ratchet mechanisms.
Claims (4)
- Ratchet device (D) comprising an element (1) with two wings (2,3) pivoted to each other at a central portion (4) of said element (1), and a coupling mechanism (5) for the movable coupling of said wings (2,3) at said central portion (4), and the movement of said wings (2,3) between two limit positions (A, B), characterized by the fact that the said mechanism (5) comprises plate means (8,8',14,14',22,22') adapted to clamp to each other said wings (2,3), and provided with a single semicircular sector (S) and with toothed lock means (8) in two-way acting on said semicircular sector (S).
- Device according to claim 1, characterized in that a first wing (2) of said two wings (2,3) has a longitudinal dimension greater than the second wing (3), and is provided with slits (26), a hole (27) for passage of a pin (6), and holes (28) for the passage of the respective fixing means (7) adapted to lock said first wing (2) between said plate means (8,8',14,14'), said second wing (3) having holes (29) for the passage of the second fixing means (7a) acts to lock said second wing (3) between said plate means (8,8',22,22').
- Device according to claim 2, characterized in that said plate means (8,8',14,14',22,22') comprise a first plate and a second plate (8,8'), each of which is provided of a cave semicircular sector (9,9') provided with a single toothe edge (10,10'), with a passing hole (11,11') adapted to receive a pin (6), and holes (12, 12',13,13') for said second fixing means (7a); a third and a fourth plate ( 14,14'), each of which is arranged in contact with a relative said first, second plate (8,8')provided with a pair (15,15') of cave slots ( 16,16')suitable to accommodate respective springs (17 ) acting on said lock means (18 ), each said third and fourth plate (14,14') having a passing hole (19,19') adapted to receive said pin (6), and holes (20,20', 21,21') for said first fixing means (7); and a fifth and a sixth plate (22,22'), each provided with holes ( 23,23',24,24') for said second fixing means (7a).
- Device according to claim 2 and 3, characterized in that said slits (26) of said first wing (2) and said slits (16,16') of said third and fourth plate (14,14') present the same shape and are arranged on the opposite side with respect to the respective holes (27,11,11') for accommodating said pin (6).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000390U ITMI20120390U1 (en) | 2012-10-31 | 2012-10-31 | RATCHET HANDLING DEVICE |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2727496A1 true EP2727496A1 (en) | 2014-05-07 |
Family
ID=48046920
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13190438.5A Withdrawn EP2727496A1 (en) | 2012-10-31 | 2013-10-28 | Ratchet device |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2727496A1 (en) |
IT (1) | ITMI20120390U1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111491860A (en) * | 2017-12-22 | 2020-08-04 | 弗得哥航空有限公司 | Aircraft wing and rotor vector system |
CN111938357A (en) * | 2019-05-16 | 2020-11-17 | 李万山 | Waist movement health care chair |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4875735A (en) * | 1984-03-30 | 1989-10-24 | Moyer George A | Seatback recliner mechanism |
US20090288270A1 (en) * | 2008-05-23 | 2009-11-26 | Tadanobu Yamashita | Angle-adjustable hinge |
EP2198749A1 (en) * | 2008-12-18 | 2010-06-23 | Ferdinand Lusch Gmbh & Co. Kg. | Detent fitting |
US20100293748A1 (en) * | 2009-05-22 | 2010-11-25 | Koyo Giken Kabushiki Kaisya | Angle-adjustable hinge |
-
2012
- 2012-10-31 IT IT000390U patent/ITMI20120390U1/en unknown
-
2013
- 2013-10-28 EP EP13190438.5A patent/EP2727496A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4875735A (en) * | 1984-03-30 | 1989-10-24 | Moyer George A | Seatback recliner mechanism |
US20090288270A1 (en) * | 2008-05-23 | 2009-11-26 | Tadanobu Yamashita | Angle-adjustable hinge |
EP2198749A1 (en) * | 2008-12-18 | 2010-06-23 | Ferdinand Lusch Gmbh & Co. Kg. | Detent fitting |
US20100293748A1 (en) * | 2009-05-22 | 2010-11-25 | Koyo Giken Kabushiki Kaisya | Angle-adjustable hinge |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111491860A (en) * | 2017-12-22 | 2020-08-04 | 弗得哥航空有限公司 | Aircraft wing and rotor vector system |
CN111938357A (en) * | 2019-05-16 | 2020-11-17 | 李万山 | Waist movement health care chair |
Also Published As
Publication number | Publication date |
---|---|
ITMI20120390U1 (en) | 2014-05-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9730522B2 (en) | Headrest tilt mechanism | |
US8069645B2 (en) | Link chain | |
KR101593116B1 (en) | Device for tilting the seat back of chair | |
KR20130103988A (en) | A chair | |
EP2727496A1 (en) | Ratchet device | |
KR101490435B1 (en) | The chair with adjustable backrest angle | |
KR200485004Y1 (en) | assembly type sofa using head restraint | |
KR102232995B1 (en) | Apparatus for Turning of Sofa Armrest | |
KR20150046490A (en) | Folding chairs | |
US10188206B2 (en) | Convertible furniture unit, slat for use in forming a furniture unit and method of using a convertible furniture unit | |
RU2739022C1 (en) | Seat module | |
EP3430947B1 (en) | A folding chair | |
US9173499B2 (en) | Adjustable armrest apparatus | |
CN204444916U (en) | A kind of seat | |
KR101461809B1 (en) | A chair | |
EP2430949A1 (en) | Safety barrier for beds, particularly of the fold-down type | |
KR20160112419A (en) | Tilting Devicd Head Board For Bed | |
US822163A (en) | Reversible reclining railroad-coach chair. | |
CN219166014U (en) | Angle adjusting device | |
KR101784152B1 (en) | Folding apparatus of seat | |
JP7266276B2 (en) | folding chair | |
CA2744763A1 (en) | Two-tooth hinge | |
WO2009127863A3 (en) | Tilt limit and locking mechanism for a chair | |
JP3198273U (en) | Support structure | |
EP2454972B1 (en) | Tip-up seat |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20131028 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20141108 |