WO2022171547A1 - Hinge device with shock absorber operated by a swinging element - Google Patents

Hinge device with shock absorber operated by a swinging element Download PDF

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Publication number
WO2022171547A1
WO2022171547A1 PCT/EP2022/052798 EP2022052798W WO2022171547A1 WO 2022171547 A1 WO2022171547 A1 WO 2022171547A1 EP 2022052798 W EP2022052798 W EP 2022052798W WO 2022171547 A1 WO2022171547 A1 WO 2022171547A1
Authority
WO
WIPO (PCT)
Prior art keywords
rocker arm
arm element
connection member
damper
housing
Prior art date
Application number
PCT/EP2022/052798
Other languages
French (fr)
Inventor
Terenzi EMANUELE
Original Assignee
C.M.I. Cerniere Meccaniche Industriali S.R.L.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by C.M.I. Cerniere Meccaniche Industriali S.R.L. filed Critical C.M.I. Cerniere Meccaniche Industriali S.R.L.
Publication of WO2022171547A1 publication Critical patent/WO2022171547A1/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D3/00—Hinges with pins
    • E05D3/02—Hinges with pins with one pin
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
    • E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
    • E05F1/10—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance
    • E05F1/12—Mechanisms in the shape of hinges or pivots, operated by springs
    • E05F1/1246—Mechanisms in the shape of hinges or pivots, operated by springs with a coil spring perpendicular to the pivot axis
    • E05F1/1253—Mechanisms in the shape of hinges or pivots, operated by springs with a coil spring perpendicular to the pivot axis with a compression spring
    • E05F1/1261—Mechanisms in the shape of hinges or pivots, operated by springs with a coil spring perpendicular to the pivot axis with a compression spring for counterbalancing
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F5/00—Braking devices, e.g. checks; Stops; Buffers
    • E05F5/02—Braking devices, e.g. checks; Stops; Buffers specially for preventing the slamming of swinging wings during final closing movement, e.g. jamb stops
    • E05F5/027—Braking devices, e.g. checks; Stops; Buffers specially for preventing the slamming of swinging wings during final closing movement, e.g. jamb stops with closing action
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D7/00—Hinges or pivots of special construction
    • E05D7/12—Hinges or pivots of special construction to allow easy detachment of the hinge from the wing or the frame
    • E05D2007/128—Hinges or pivots of special construction to allow easy detachment of the hinge from the wing or the frame in a radial direction
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2201/00—Constructional elements; Accessories therefore
    • E05Y2201/10—Covers; Housings
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2201/00—Constructional elements; Accessories therefore
    • E05Y2201/20—Brakes; Disengaging means, e.g. clutches; Holders, e.g. locks; Stops; Accessories therefore
    • E05Y2201/262—Brakes; Disengaging means, e.g. clutches; Holders, e.g. locks; Stops; Accessories therefore characterised by type of motion
    • E05Y2201/264—Brakes; Disengaging means, e.g. clutches; Holders, e.g. locks; Stops; Accessories therefore characterised by type of motion linear
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2201/00—Constructional elements; Accessories therefore
    • E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefore
    • E05Y2201/404—Motors; Magnets; Springs; Weights; Accessories therefore characterised by the function
    • E05Y2201/41—Motors; Magnets; Springs; Weights; Accessories therefore characterised by the function for closing
    • E05Y2201/412—Motors; Magnets; Springs; Weights; Accessories therefore characterised by the function for closing for the final closing movement
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2201/00—Constructional elements; Accessories therefore
    • E05Y2201/60—Suspension or transmission members; Accessories therefore
    • E05Y2201/622—Suspension or transmission members elements
    • E05Y2201/624—Arms
    • E05Y2201/626—Levers
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2201/00—Constructional elements; Accessories therefore
    • E05Y2201/60—Suspension or transmission members; Accessories therefore
    • E05Y2201/622—Suspension or transmission members elements
    • E05Y2201/638—Cams; Ramps
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2201/00—Constructional elements; Accessories therefore
    • E05Y2201/60—Suspension or transmission members; Accessories therefore
    • E05Y2201/622—Suspension or transmission members elements
    • E05Y2201/682—Pins
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2600/00—Mounting or coupling arrangements for elements provided for in this subclass
    • E05Y2600/50—Mounting methods; Positioning
    • E05Y2600/52—Toolless
    • E05Y2600/53—Snapping
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/40—Protection
    • E05Y2800/41—Protection against finger injury
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/30—Application of doors, windows, wings or fittings thereof for domestic appliances
    • E05Y2900/308—Application of doors, windows, wings or fittings thereof for domestic appliances for ovens

Definitions

  • the present invention relates to the technical field concerning hinges for furniture and household appliances, such as ovens, dishwashers and the like, and refers to a hinge device with shock absorber operated by a swinging element.
  • hinges interconnected between a body, of a piece of furniture or household appliance, equipped with an opening and a door for closing the opening and provided with a shock absorber or damper, of the type provided with a cylindrical body and a rod axially and elastically pushed outward by a spring, where the cylindrical body and the respective fluid content act on a piston fixed to the internal end of the rod with a viscous force which opposes the translations of the rod.
  • Said known hinges can be equipped with a projecting arm element which is moved by the door in the last degrees of closure thereof and which transmits such motion to the damper by compressing it so as to slow down the final closing rotation speed of the door.
  • This protruding arm element can pose a risk to the hands and arms of a user intent on accessing the internal volume of the appliance, can damage objects entering or leaving the appliance and is itself subject to the risk of being damaged.
  • Some known hinges with damper are equipped with an arm element, protruding or not, of the translating type, sliding along guide elements and are subject to a greater risk of jamming, sliding irregularities or even blockages of the final closing rotation.
  • Prior document EP2284344 discloses a hinge in particular for electrical household appliances, comprising a first box-shaped body, a second box-shaped body, a connecting element between the box-shaped bodies and a damping cylinder for applying a damping effect on the second box-shaped body as the latter moves towards the first body.
  • Prior document WO2018041691 discloses a hinge device to damp the terminal portion of the closing stroke of a hatch or door of an appliance or piece of furniture.
  • Said device comprises at least: a first rack means; a motion damping means; a kinematic transmission mechanism kinematically connecting the first rack means to the damping means; a first pinion means and a second rack means equipped with a connection means engaged to a mobile portion of the damping means to move it in the end portion of the closing stroke.
  • Prior art document US2008289144 discloses a hinge for wings or doors, in particular of electrical appliances, comprising a first box-shaped body, a second box-shaped body, a connecting element between the first and second bodies, and a damper cylinder for applying on the second body an action damping its movement towards the first body.
  • Prior document WO2019066332 discloses a home appliance provided with a damping assembly including a first lever installed in the main body of the appliance, the first lever being configured to be movable when the door of the appliance is pressed, a second lever connected to the first lever, and a cylinder connected to the second lever, the cylinder being configured to be movable in a direction that is parallel to a movement path of the first lever.
  • a further disadvantage of these known hinges, provided with damper, consists in the fact that they can be difficult to separate into two parts and to re-join together, as can happen, for example, in case of maintenance or cleaning.
  • An object of the present invention is to propose a hinge device with shock absorber operated by a swinging element which does not have projections and which is practically free from the risk of causing or experience damage as a result of contacts or impacts with people or things. Another object is to propose a hinge device with fluid movement even in the event of dirt, particles, wear or severe conditions of use.
  • a further object is to propose a hinge device that allows to quickly and easily disassemble and assemble the door, even without the use of tools.
  • Another object is to propose a compact hinge device which does not impose dimensional, physical and even aesthetic limits on the respective household appliance or furniture.
  • FIGS. 1 and 2 show axonometric views of the hinge device with shock absorber operated by a swinging element object of the present invention in a partially open condition and respectively completely assembled and partially disassembled;
  • Figures 3-7 show, in different scales, the device of Figure 1 sectioned from a median plane and in a sequence of phases from complete opening to complete closure, where the device of Figure 4 is in a storage or transport condition;
  • FIG. 8-10 show views in three distinct orthogonal projections of a second member of the hinge of Figure 1;
  • Figures 12-14 show axonometric views of the second member of Figure 8 in which one of its rocker arm element is in conditions corresponding respectively to the separation of the hinge into two parts, to the assembled hinge open and closed;
  • FIG. 15 and 16 show axonometric and opposite sides views of a hinge second body acting as coupling member
  • FIG. 17 shows an exploded view of the coupling member of Figure 16
  • FIG. 18 shows an orthogonal projection view sectioned from a median plane of the coupling member of Figure 16;
  • numeral 1 indicates the hinge device with shock absorber or damper operated by a swinging element comprising a first member 3 and a second member 5 whose proximal ends are mutually connected in a rotatable manner by means of a single hinge pivot pin 7, where in an operative condition the first member 3 is assigned to be fixed to a respective door or leaf of an appliance and the second member 5 is assigned to be fixed to a structure or frame of the appliance, or vice versa, for the rotation of the door between the closing and the complete opening of the appliance.
  • proximal and distal will be used in relation to the hinge pivot pin 7 distance: the one of two elements closest to the hinge pivot pin 7 will be indicated as proximal and the farthest one as distal.
  • the first member 3 comprises at least a first body 9, for example made of pressed metal sheet, sheared and bent in a "U" shape, having a general shape of an elongated parallelepiped with three longitudinal lateral faces and having a respective longitudinal geometric axis.
  • the proximal portion of the first body carries a seat for the hinge pivot pin 7.
  • the second member 5 comprises a second body 11 and a connection member 13.
  • the second member constitutes a rigid element connected in a non-movable way to the second body and to the connection member which is preferably of the releasable type and separable from the rest of the second member only to allow assembly and disassembly of the door from the respective appliance.
  • the second body 11 can also be made of pressed metal sheet, sheared and bent in a "U" shape and has a general shape of an elongated parallelepiped with three longitudinal lateral faces and has a respective longitudinal geometric axis.
  • One end of the connection member 13 is connected to the second body 11 and its 13 opposite end is provided with a seat for the hinge pivot pin 7.
  • connection member 13 is rotatably connected by means of a swinging pin 15 to a median portion of a rocker arm element 17 having first 19 and second 21 ends assigned, at least in a final portion of about 5°-20° of the stroke of closure, to respectively match with a first matching member 23 fixed to the first body 9 and with a second matching member 25 movable along the second body 11 and in abutment with a damper 27 which is connected to the second body 11.
  • the damper 27 is of the elongated linear type with the respective longitudinal geometric axis parallel or almost parallel to the longitudinal axis of the second body 11.
  • the second end of the rocker arm element causes the translation of the second matching member and of the corresponding end of the damper which is compressed generating a reaction force that opposes the closure, slowing down its speed.
  • the rocker arm element 17 is shielded by the connection member 13 and does not protrude, or almost, from the latter and from the first and second bodies 9, 11, therefore the rocker arm element 17 remains protected and hidden and does not constitute a risk for things or people.
  • connection member 13 can be locked to the second body 11 or in a single body with it or, preferably and as shown in the figures, the connection member 13 is fixed to the second body 11 with a removable interlocking able to provide mutual locking without relative movements in the operating condition.
  • the device comprises a housing 29, for example made of plastic or other synthetic or metallic material, with an elongated internal seat assigned to accommodate, in a freely sliding manner, the damper 27, locking its distal end and allowing the proximal end to slide which abuts with a support 31 sliding with such end in the internal seat of the housing 29.
  • the housing 29 has a general shape of an approximately elongated parallelepiped and its internal hollow seat is longitudinally oriented and has a shape, for example cylindrical, complementary to that of the damper; the transversal dimensions of the internal hollow seat are slightly higher than the transversal dimensions of the damper to allow easy insertion and sliding of the latter.
  • the second body 11 has an opening 30 to accommodate the portion of the housing 29 which contains the hollow seat for the damper.
  • Such opening 30 is made through the longitudinal, lateral and mutually parallel faces of the second body and is sized to accommodate the housing which is provided with a flange with holes for rivets, nails or the like for fixing to the second body, alternatively the housing can be interlocked to the opening 30.
  • the distal end of the damper 27 is blocked by a terminal stop of the housing 29 or preferably as shown in figures 15 and 16 by interference with the edges of the opening 30 for the housing 29 which contains the hollow seat for the damper.
  • the portion of the support 31 opposite the damper 27 carries the second matching member 25 consisting of a pin or rolling means with an axis of rotation parallel to that of the swinging pin 15.
  • Such second matching member is assigned to meet with the second end 21 of the rocker arm element 17.
  • the second end 21 has a cam profile for the second matching member 25, this profile is shaped so that its contact points with the second matching member 25 are placed at a distance from the hinge pivot pin 7 increasing with the rotation of the rocker arm element 17 due to the terminal closing rotation of the first member 3 of the device.
  • the first matching member 23 consists of a pin or preferably and as illustrated in Figure 2, in a rolling means with an axis of rotation parallel to that of the swinging pin 15.
  • Such first matching member is fixed to the proximal portion of the first body 9.
  • the first end 19 of the rocker arm element 17 has a cam profile for the first matching member 23 which is shaped, preferably in a curvilinear way, so as to cause, during the terminal closing rotation of the first body 9 of the device, the swinging of the rocker arm element 17 in the direction of approach of its second end 21 towards the distal end of the damper 27.
  • the first and second matching members 23, 25 preferably consist of roller or bushing rolling means mounted on corresponding first and second axes.
  • the ends of the first axis of the first matching member are fixed to the sides of the first body 9 and have lateral spacers for adjusting the respective rolling means, the ends of the second axis of the second matching member are mounted on respective projections of a fork portion of the support 31.
  • the rocker arm element 17 for example in cut or sheared and perforated metal sheet, is shaped approximately as an open “L” or with the arms forming an interposed obtuse angle.
  • the longer arm of the "L" shaped rocker arm element carries the first end 19 and the shorter arm carries the second end 21.
  • the swinging pin 15 is placed in the long arm at an average distance from the first end 19 between one twentieth and a half of the average distance from the second end 21. Consequently, the rocker arm element, seen from the first matching member 23 which operates it, is an adverse lever and small movements of the first end correspond to proportionally greater movements of the second end.
  • connection member 13 includes two shaped plates, for example in cut and perforated metal sheet almost equal and facing each other and between which the rocker arm element 17 swings; furthermore, the shape and size of the two plates of the connection member 13 are such as to hide the portion of the rocker arm element 17 between the first and second bodies 9, 11. In this way the rocker arm element is almost totally inaccessible to things and to users of the appliance on which the device is installed. Furthermore, with the same weight, this solution provides greater rigidity than the construction of the connection member 13 from a single plate.
  • connection member 13 is preferably fixed in a removable interlocking manner to the second body 11 and, for this purpose, the invention provides that the two plates of the connection member comprise respective coupling portions 35 assigned to enter the second body 11 through a window 37 made in a median longitudinal face of the second body 11 and to match through respective hollow perimeter seats a suitable stop 12 consisting for example of a transverse pin whose ends are fixed to two parallel longitudinal faces of the second body.
  • connection member plates have respective housings 39, for example consisting of notches or recesses, for a hooking edge of the window 37; said portions 35 are also provided with a lock means 41, for example in the shape of a U-bolt or fork, pivotally and transversely pivoted to said plates.
  • the lock means 41 is assigned to meet a portion of the window opposite to said hooking edge thereof to rigidly and removably lock the connection member 13 to the second body 11 in the operative condition.
  • the lock means 41 is hinged to the two plates of the connection member 13 by means of the swinging pin 15 of the rocker arm element 17 and the ends of this pin 15 are engaged in respective seats of the plates and of the ends of the lock means.
  • the plates of the connection member 13 and the rocker arm element 17 are shaped in such a way that when the connection member 13 is positioned and oriented for approaching and coupling with the second body 11 and the first member is inclined with respect to the connection member 13 in a manner corresponding to an opening angle of the hinge greater than about 10° - 15°, the rocker arm element 17 is kept by gravity in a position in which its distal portion rests on a transversal stop of the plates and in which it protrudes from the profile of the plates only or almost only in proximity of the housings 39 for the hooking edge of the window, facilitating the assembly of the door having the first body 9 with the structure of the appliance having the second body 11.
  • the variant of the device comprising the housing 29 of figures 19-25 involves constructive and assembly simplifications.
  • the opening 30 is made through the longitudinal, lateral and mutually parallel faces of the second body 11 but its 30 longitudinal extension is sized at least to allow the housing 29 to slide along its longitudinal edges, allowing it an approximately equal stroke to the excursion of the movable rod of the damper 27, in this way the housing 29 is connected to the opening 30 in a freely sliding way in the longitudinal direction along the longitudinal sides of the opening 30.
  • the proximal end of the damper 27 meets with a terminal stop or the bottom of the proximal end of the internal seat of the housing 29.
  • the distal portion of the damper 27 protrudes from this seat and meets a transverse and distal edge of the opening 30 or a shoulder obtained in or fixed to the second body 11.
  • the proximal end of the housing 29 is fork-shaped or is shaped as a side arm for supporting the two ends, or one of them, of a pin consisting of or having the second matching member 25 of the rolling means type.
  • the axis of rotation of the second matching member 25 is parallel to that of the swinging pin 15. Obviously, in this variant too the second matching member 25 is assigned to meet with the second end 21 of the rocker arm element 17.
  • Each lateral face of the housing 29 has respective longitudinal and lateral fins 32, 34 assigned to constrain the housing 29 to slide along the longitudinal edges of the opening 30 without allowing the housing 29 to disengage from the opening 30.
  • the housing is subject to mainly longitudinal stresses and movements and this allows using or manufacturing fins with relatively small transverse dimensions.
  • the longitudinal fins 34 of one of the two lateral faces of the housing 29 are of the interlocking, hooking, harpoon or similar type, for the interlocking connection of the housing to the opening 30 and for free mutual sliding.
  • the second body 11 can be provided with a single window suitable for both of the shapes described above of the housing which can therefore be chosen from time to time according to the needs and requirements.
  • the device and its variant can be provided with elastic elements for balancing the weight of the door, with means for providing an elastic compression force of the sealing gaskets of the appliance, with brakes and sliding friction stops, etc.

Abstract

A hinge device with shock absorber or damper operated by a swinging element comprises a first member (3) and a second member (5) whose proximal ends are mutually connected in a rotatable way by means of a single hinge pivot pin (7), where in an operating condition the first member (3) is assigned to be fixed to a respective door or shutter of an appliance and the second member (5) is assigned to be fixed to a structure or frame of the appliance, or vice versa, for the door rotation between the complete closing and opening of the appliance; the first member (3) comprises at least a first elongated body (9) whose proximal portion carries a seat for the single hinge pivot pin (7). The second member (5) comprises a second body (11) and a connection member (13) one end of which is connected in a non-movably way to the second body (11) and the opposite end of which is provided with a seat for the single hinge pivot pin (7) and in that the connection member (13) is rotatably connected by means of a swinging pin (15) to a median portion of a rocker arm element (17) having first (19) and second (21) ends assigned, at least in a final closing stroke, to abut respectively with a first abutment (23) fixed to the first body (9) and with a second abutment (25) movable along the second body (11) to compress a damper (27) connected to the second body (11) so as to dampen the speed of the final closing rotation of the door; where the shapes of the rocker arm element (17) and of the connection member (13) are such that the rocker arm element (17) does not protrude or almost protrude from the connection member (13) between the first (9) and second (11) bodies.

Description

HINGE DEVICE WITH SHOCK ABSORBER OPERATED BY A SWINGING ELEMENT
DESCRIPTION
TECHNICAL FIELD
The present invention relates to the technical field concerning hinges for furniture and household appliances, such as ovens, dishwashers and the like, and refers to a hinge device with shock absorber operated by a swinging element.
PRIOR ART
There are known hinges interconnected between a body, of a piece of furniture or household appliance, equipped with an opening and a door for closing the opening and provided with a shock absorber or damper, of the type provided with a cylindrical body and a rod axially and elastically pushed outward by a spring, where the cylindrical body and the respective fluid content act on a piston fixed to the internal end of the rod with a viscous force which opposes the translations of the rod. Said known hinges can be equipped with a projecting arm element which is moved by the door in the last degrees of closure thereof and which transmits such motion to the damper by compressing it so as to slow down the final closing rotation speed of the door. This protruding arm element can pose a risk to the hands and arms of a user intent on accessing the internal volume of the appliance, can damage objects entering or leaving the appliance and is itself subject to the risk of being damaged.
Some known hinges with damper are equipped with an arm element, protruding or not, of the translating type, sliding along guide elements and are subject to a greater risk of jamming, sliding irregularities or even blockages of the final closing rotation.
Prior document EP2284344 discloses a hinge in particular for electrical household appliances, comprising a first box-shaped body, a second box-shaped body, a connecting element between the box-shaped bodies and a damping cylinder for applying a damping effect on the second box-shaped body as the latter moves towards the first body.
Prior document WO2018041691 discloses a hinge device to damp the terminal portion of the closing stroke of a hatch or door of an appliance or piece of furniture. Said device comprises at least: a first rack means; a motion damping means; a kinematic transmission mechanism kinematically connecting the first rack means to the damping means; a first pinion means and a second rack means equipped with a connection means engaged to a mobile portion of the damping means to move it in the end portion of the closing stroke.
Prior art document US2008289144 discloses a hinge for wings or doors, in particular of electrical appliances, comprising a first box-shaped body, a second box-shaped body, a connecting element between the first and second bodies, and a damper cylinder for applying on the second body an action damping its movement towards the first body.
Prior document WO2019066332 discloses a home appliance provided with a damping assembly including a first lever installed in the main body of the appliance, the first lever being configured to be movable when the door of the appliance is pressed, a second lever connected to the first lever, and a cylinder connected to the second lever, the cylinder being configured to be movable in a direction that is parallel to a movement path of the first lever.
A further disadvantage of these known hinges, provided with damper, consists in the fact that they can be difficult to separate into two parts and to re-join together, as can happen, for example, in case of maintenance or cleaning.
DISCLOSURE OF THE INVENTION
An object of the present invention is to propose a hinge device with shock absorber operated by a swinging element which does not have projections and which is practically free from the risk of causing or experience damage as a result of contacts or impacts with people or things. Another object is to propose a hinge device with fluid movement even in the event of dirt, particles, wear or severe conditions of use.
A further object is to propose a hinge device that allows to quickly and easily disassemble and assemble the door, even without the use of tools.
Another object is to propose a compact hinge device which does not impose dimensional, physical and even aesthetic limits on the respective household appliance or furniture.
BEIEF DESCRIPTION OF THE DRAWINGS
The characteristics of the invention are highlighted below with particular reference to the accompanying drawings in which:
- Figures 1 and 2 show axonometric views of the hinge device with shock absorber operated by a swinging element object of the present invention in a partially open condition and respectively completely assembled and partially disassembled;
- Figures 3-7 show, in different scales, the device of Figure 1 sectioned from a median plane and in a sequence of phases from complete opening to complete closure, where the device of Figure 4 is in a storage or transport condition;
- Figures 8-10 show views in three distinct orthogonal projections of a second member of the hinge of Figure 1;
- Figure 11 shows an axonometric and exploded view of the second member of Figure
8;
Figures 12-14 show axonometric views of the second member of Figure 8 in which one of its rocker arm element is in conditions corresponding respectively to the separation of the hinge into two parts, to the assembled hinge open and closed;
- Figures 15 and 16 show axonometric and opposite sides views of a hinge second body acting as coupling member;
- Figure 17 shows an exploded view of the coupling member of Figure 16;
- Figure 18 shows an orthogonal projection view sectioned from a median plane of the coupling member of Figure 16;
- Figures 19-25 show a variant which refers to a housing different from that of the previous figures, clearly evident in those of 15-18.
BEST MODE TO CARRY OUT THE INVENTION
With reference to Figures 1-18, numeral 1 indicates the hinge device with shock absorber or damper operated by a swinging element comprising a first member 3 and a second member 5 whose proximal ends are mutually connected in a rotatable manner by means of a single hinge pivot pin 7, where in an operative condition the first member 3 is assigned to be fixed to a respective door or leaf of an appliance and the second member 5 is assigned to be fixed to a structure or frame of the appliance, or vice versa, for the rotation of the door between the closing and the complete opening of the appliance.
In the following the terms proximal and distal will be used in relation to the hinge pivot pin 7 distance: the one of two elements closest to the hinge pivot pin 7 will be indicated as proximal and the farthest one as distal.
The first member 3 comprises at least a first body 9, for example made of pressed metal sheet, sheared and bent in a "U" shape, having a general shape of an elongated parallelepiped with three longitudinal lateral faces and having a respective longitudinal geometric axis.
The proximal portion of the first body carries a seat for the hinge pivot pin 7.
The second member 5 comprises a second body 11 and a connection member 13. In said operating condition, in which the hinge device allows the opening and closing rotation of a door, the second member constitutes a rigid element connected in a non-movable way to the second body and to the connection member which is preferably of the releasable type and separable from the rest of the second member only to allow assembly and disassembly of the door from the respective appliance. The second body 11 can also be made of pressed metal sheet, sheared and bent in a "U" shape and has a general shape of an elongated parallelepiped with three longitudinal lateral faces and has a respective longitudinal geometric axis. One end of the connection member 13 is connected to the second body 11 and its 13 opposite end is provided with a seat for the hinge pivot pin 7.
The connection member 13 is rotatably connected by means of a swinging pin 15 to a median portion of a rocker arm element 17 having first 19 and second 21 ends assigned, at least in a final portion of about 5°-20° of the stroke of closure, to respectively match with a first matching member 23 fixed to the first body 9 and with a second matching member 25 movable along the second body 11 and in abutment with a damper 27 which is connected to the second body 11.
Preferably the damper 27 is of the elongated linear type with the respective longitudinal geometric axis parallel or almost parallel to the longitudinal axis of the second body 11.
During the rotation of the door in the final closing portion, the second end of the rocker arm element causes the translation of the second matching member and of the corresponding end of the damper which is compressed generating a reaction force that opposes the closure, slowing down its speed.
The rocker arm element 17 is shielded by the connection member 13 and does not protrude, or almost, from the latter and from the first and second bodies 9, 11, therefore the rocker arm element 17 remains protected and hidden and does not constitute a risk for things or people.
The invention provides that the connection member 13 can be locked to the second body 11 or in a single body with it or, preferably and as shown in the figures, the connection member 13 is fixed to the second body 11 with a removable interlocking able to provide mutual locking without relative movements in the operating condition.
The device comprises a housing 29, for example made of plastic or other synthetic or metallic material, with an elongated internal seat assigned to accommodate, in a freely sliding manner, the damper 27, locking its distal end and allowing the proximal end to slide which abuts with a support 31 sliding with such end in the internal seat of the housing 29.
The housing 29 has a general shape of an approximately elongated parallelepiped and its internal hollow seat is longitudinally oriented and has a shape, for example cylindrical, complementary to that of the damper; the transversal dimensions of the internal hollow seat are slightly higher than the transversal dimensions of the damper to allow easy insertion and sliding of the latter.
The second body 11 has an opening 30 to accommodate the portion of the housing 29 which contains the hollow seat for the damper.
Such opening 30 is made through the longitudinal, lateral and mutually parallel faces of the second body and is sized to accommodate the housing which is provided with a flange with holes for rivets, nails or the like for fixing to the second body, alternatively the housing can be interlocked to the opening 30.
The distal end of the damper 27 is blocked by a terminal stop of the housing 29 or preferably as shown in figures 15 and 16 by interference with the edges of the opening 30 for the housing 29 which contains the hollow seat for the damper.
The portion of the support 31 opposite the damper 27 carries the second matching member 25 consisting of a pin or rolling means with an axis of rotation parallel to that of the swinging pin 15. Such second matching member is assigned to meet with the second end 21 of the rocker arm element 17.
The second end 21 has a cam profile for the second matching member 25, this profile is shaped so that its contact points with the second matching member 25 are placed at a distance from the hinge pivot pin 7 increasing with the rotation of the rocker arm element 17 due to the terminal closing rotation of the first member 3 of the device.
The first matching member 23 consists of a pin or preferably and as illustrated in Figure 2, in a rolling means with an axis of rotation parallel to that of the swinging pin 15.
Such first matching member is fixed to the proximal portion of the first body 9.
The first end 19 of the rocker arm element 17 has a cam profile for the first matching member 23 which is shaped, preferably in a curvilinear way, so as to cause, during the terminal closing rotation of the first body 9 of the device, the swinging of the rocker arm element 17 in the direction of approach of its second end 21 towards the distal end of the damper 27.
The first and second matching members 23, 25 preferably consist of roller or bushing rolling means mounted on corresponding first and second axes.
The ends of the first axis of the first matching member are fixed to the sides of the first body 9 and have lateral spacers for adjusting the respective rolling means, the ends of the second axis of the second matching member are mounted on respective projections of a fork portion of the support 31.
The rocker arm element 17, for example in cut or sheared and perforated metal sheet, is shaped approximately as an open "L" or with the arms forming an interposed obtuse angle.
The longer arm of the "L" shaped rocker arm element carries the first end 19 and the shorter arm carries the second end 21. The swinging pin 15 is placed in the long arm at an average distance from the first end 19 between one twentieth and a half of the average distance from the second end 21. Consequently, the rocker arm element, seen from the first matching member 23 which operates it, is an adverse lever and small movements of the first end correspond to proportionally greater movements of the second end. It is therefore possible, by acting on the shape of the cam profiles and on the position of the swinging pin 15 in the rocker arm element 17, to adjust the law of motion of the support 31 as a function of the opening angle of the device and in particular it is possible to adjust the device so that to a few degrees of the terminal portion of the closing stroke correspond a translation of the support 31 equal or almost equal to the entire useful stroke of the damper rod.
The connection member 13 includes two shaped plates, for example in cut and perforated metal sheet almost equal and facing each other and between which the rocker arm element 17 swings; furthermore, the shape and size of the two plates of the connection member 13 are such as to hide the portion of the rocker arm element 17 between the first and second bodies 9, 11. In this way the rocker arm element is almost totally inaccessible to things and to users of the appliance on which the device is installed. Furthermore, with the same weight, this solution provides greater rigidity than the construction of the connection member 13 from a single plate.
As seen, the connection member 13 is preferably fixed in a removable interlocking manner to the second body 11 and, for this purpose, the invention provides that the two plates of the connection member comprise respective coupling portions 35 assigned to enter the second body 11 through a window 37 made in a median longitudinal face of the second body 11 and to match through respective hollow perimeter seats a suitable stop 12 consisting for example of a transverse pin whose ends are fixed to two parallel longitudinal faces of the second body.
These portions 35 of the connection member plates have respective housings 39, for example consisting of notches or recesses, for a hooking edge of the window 37; said portions 35 are also provided with a lock means 41, for example in the shape of a U-bolt or fork, pivotally and transversely pivoted to said plates.
The lock means 41 is assigned to meet a portion of the window opposite to said hooking edge thereof to rigidly and removably lock the connection member 13 to the second body 11 in the operative condition.
Preferably and as illustrated in the accompanying figures, the lock means 41 is hinged to the two plates of the connection member 13 by means of the swinging pin 15 of the rocker arm element 17 and the ends of this pin 15 are engaged in respective seats of the plates and of the ends of the lock means. Referring now in particular to Figures 2 and 12, the plates of the connection member 13 and the rocker arm element 17 are shaped in such a way that when the connection member 13 is positioned and oriented for approaching and coupling with the second body 11 and the first member is inclined with respect to the connection member 13 in a manner corresponding to an opening angle of the hinge greater than about 10° - 15°, the rocker arm element 17 is kept by gravity in a position in which its distal portion rests on a transversal stop of the plates and in which it protrudes from the profile of the plates only or almost only in proximity of the housings 39 for the hooking edge of the window, facilitating the assembly of the door having the first body 9 with the structure of the appliance having the second body 11.
The variant of the device comprising the housing 29 of figures 19-25 involves constructive and assembly simplifications.
In this variant too the opening 30 is made through the longitudinal, lateral and mutually parallel faces of the second body 11 but its 30 longitudinal extension is sized at least to allow the housing 29 to slide along its longitudinal edges, allowing it an approximately equal stroke to the excursion of the movable rod of the damper 27, in this way the housing 29 is connected to the opening 30 in a freely sliding way in the longitudinal direction along the longitudinal sides of the opening 30.
The proximal end of the damper 27 meets with a terminal stop or the bottom of the proximal end of the internal seat of the housing 29. The distal portion of the damper 27 protrudes from this seat and meets a transverse and distal edge of the opening 30 or a shoulder obtained in or fixed to the second body 11. The proximal end of the housing 29 is fork-shaped or is shaped as a side arm for supporting the two ends, or one of them, of a pin consisting of or having the second matching member 25 of the rolling means type. The axis of rotation of the second matching member 25 is parallel to that of the swinging pin 15. Obviously, in this variant too the second matching member 25 is assigned to meet with the second end 21 of the rocker arm element 17. Each lateral face of the housing 29 has respective longitudinal and lateral fins 32, 34 assigned to constrain the housing 29 to slide along the longitudinal edges of the opening 30 without allowing the housing 29 to disengage from the opening 30. The housing is subject to mainly longitudinal stresses and movements and this allows using or manufacturing fins with relatively small transverse dimensions.
The longitudinal fins 34 of one of the two lateral faces of the housing 29 are of the interlocking, hooking, harpoon or similar type, for the interlocking connection of the housing to the opening 30 and for free mutual sliding.
This variant does not require the use of the sliding support 31 and rivets, nails or the like for fixing the housing to the second body but the operation is almost the same as the previous embodiment. It should be noted that the second body 11 can be provided with a single window suitable for both of the shapes described above of the housing which can therefore be chosen from time to time according to the needs and requirements.
Obviously, and as shown in the figures, the device and its variant can be provided with elastic elements for balancing the weight of the door, with means for providing an elastic compression force of the sealing gaskets of the appliance, with brakes and sliding friction stops, etc.

Claims

1) Hinge device with shock absorber or damper operated by a swinging element comprising a first member (3) and a second member (5) whose proximal ends are mutually connected in a rotatable way by means of a single hinge pivot pin (7), where in an operating condition the first member (3) is assigned to be fixed to a respective door or shutter of an appliance and the second member (5) is assigned to be fixed to a structure or frame of the appliance, or vice versa, for the door rotation between the complete closing and opening of the appliance; the first member (3) comprises at least a first elongated body (9) whose proximal portion carries a seat for the single hinge pivot pin (7); said device being characterized in that the second member (5) comprises a second body (11) and a connection member (13) one end of which is connected in a non-movably way to the second body (11) and the opposite end of which is provided with a seat for the single hinge pivot pin (7) and in that the connection member (13) is rotatably connected by means of a swinging pin (15) to a median portion of a rocker arm element (17) having first (19) and second (21) ends assigned, at least in a final closing stroke, to abut respectively with a first abutment (23) fixed to the first body (9) and with a second abutment (25) movable along the second body (11) to compress a damper (27) connected to the second body (11) so as to dampen the speed of the final closing rotation of the door; where the shapes of the rocker arm element (17) and of the connection member (13) are such that the rocker arm element (17) does not protrude or almost protrude from the connection member (13) between the first (9) and second (11) bodies.
2) Device according to claim 1 characterized in that the connection member (13) is non- movably locked to the second body (11) being removably jointed or irremovably fixed to it (11) or being made in a single body with it (11), where the first (9) and second (11) bodies have respective general elongated parallelepiped shapes with at least three longitudinal lateral faces and have respective longitudinal geometric axes and in that the damper (27) is of the elongated linear type with the respective longitudinal geometric axis parallel or almost parallel to the longitudinal axis of the second body (11). 3) Device according to claim 2 characterized in that it comprises a housing (29) with an elongated internal seat to for slidingly accommodating the damper (27) having one of its ends locked to or from the second body (11), this housing (29) is assigned to be connected to an opening (30) obtained through the lateral longitudinal and mutually parallel faces of the second body (11) where the second end (21) of the rocker arm element (17) acts on the opposite end of the damper (27) at least by means of the second match (25).
4) Device according to claim 3 characterized in that the housing (29) is rigidly locked to the opening (30) and the proximal end of the damper (27) abuts with a support (31) slidable together with said end in the internal seat of the housing (29); the portion opposite to the damper (27) of such support (31) carries the second abutment (25) consisting of a pin or a rolling means with a rotation axis parallel to that of the swinging pin (15) and assigned to abut with the second end (21) of the rocker arm element (17).
5) Device according to claim 3 characterized in that the housing (29) is connected to the opening (30) in a freely sliding way in the longitudinal direction along the longitudinal sides of the opening (30), the proximal end of the damper (27) abuts with a terminal stop of the proximal end of the internal seat of the housing (29) and the distal portion of the damper protrudes from such seat and abuts a transverse and distal edge of the opening (30) or a shoulder obtained in or fixed to the second body (11), the proximal end of the housing (29) carries the second abutment (25) consisting of a pin or rolling means with a rotation axis parallel to that of the swinging pin (15) and assigned to abut with the second end (21) of the rocker arm element (17).
6) Device according to claim 5 characterized in that each lateral face of the housing (29) has respective longitudinal and lateral fins (32, 34) assigned to constrain the housing (29) to slide along the longitudinal edges of the opening (30) without allowing mutual disengagement, where the longitudinal fins (34) of a lateral face of the housing (29) are of the interlocking, hooking, harpoon or similar type, for the interlocking connection of the housing to the opening (30).
7) Device according to any one of claims 4-6 characterized in that said second end (21) has a cam profile for the second abutment (25) shaped so that its contact points with the second abutment (25) are placed at distances from the single hinge pivot pin (7) increasing with the rotation of the rocker arm element (17) due to the terminal closing rotation of the first member (3) of the device.
8) Device according to any one of claims 2-7, characterized in that the first abutment (23) consists of a pin or rolling means with a rotation axis parallel to that of the swinging pin (15) and is fixed to the proximal portion of the first body (9); the first end (19) of the rocker arm element (17) has a shaped cam profile for the first abutment (23) so as to cause, during the terminal closing rotation of the first member (3) of the device, the swinging of the rocker arm element (17) in the approaching direction of its second end (21) towards the distal end of the damper (27).
9) Device according to any one of the preceding claims characterized in that the first (23) and second (25) abutments consist of roller or bushing rolling means mounted on corresponding first and second axes, the ends of the first axis are fixed to the sides of the first body (9) and have lateral spacers for centering the respective rolling means, the ends of the second axis are mounted on respective protrusions of a fork portion of the support or housing.
10) Device according to any one of the preceding claims characterized in that the rocker arm element (17) is shaped approximately as an open "L" that is with an obtuse angle between the arms, where the longer arm of the "L" rocker arm element carries the first end (19) and the shorter arm carries the second end (21); the swinging pin (15) is placed in the long arm at an average distance from the first end (19) between one twentieth and a half of the average distance from the second end (21).
11) Device according to any one of the preceding claims characterized in that the connection member (13) comprises two almost identical and facing plates and between which the rocker arm element (17) swings.
12) Device according to claim 11 characterized in that the shape and the dimensions of the two plates of the connection member (13) are such as to hide the portion of the rocker arm element (17) between the first (9) and second (11) bodies.
13) Device according to claim 2 and at least one of claims 11 and 12, characterized in that in the case of a connection member (13) removably fixed by interlocking to the second body (11), the two plates of such member comprise respective coupling portions (35) assigned to enter the second body (11), and to abut its (11) proper stop (12), through a window (37) made in a median longitudinal face of the second body (11), these portions (35) of the connection member plates have respective housings (39) for a hooking edge of the window (37) and said plates of the connection member are provided with a lock means (41) rotatably and transversely pivoted to them and it (41) is assigned to abut a portion of the window opposite to said its hooking edge to removably lock the connection member (13) to the second body (11); the lock means (41) is pivoted to the two plates of the connection member (13) by means of the swinging pin (15) of the rocker arm element (17) where the ends of this pin (15) are engaged in respective seats of the plates and ends of the lock means.
14) Device according to claim 13 characterized in that the plates of the connection member (13) and the plate of the rocker arm element (17) are shaped so that when the connection member (13) is positioned and oriented for the approach and coupling with the second body (11) and the first member is inclined with respect to the connection member (13) in a way corresponding to an opening angle of the hinge greater than about 10°-15°, the rocker arm element (17) is hold by gravity in a position where it protrudes from the plates profile only or almost only in proximity of the housings (39) for the hooking edge of the window, facilitating the assembly of the door carrying the first body (9) with the structure of the apparatus carrying the second body (11).
PCT/EP2022/052798 2021-02-10 2022-02-06 Hinge device with shock absorber operated by a swinging element WO2022171547A1 (en)

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IT102021000002864A IT202100002864A1 (en) 2021-02-10 2021-02-10 HINGE DEVICE WITH DAMPER ACTIVATED BY AN OSCILLATING ELEMENT
IT102021000002864 2021-02-10

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US20080289144A1 (en) 2007-05-23 2008-11-27 Nuovo Star S.P.A. Hinge for wings or doors
EP2284344A2 (en) 2009-07-30 2011-02-16 NUOVA STAR S.p.A. Improved hinge for wings or doors
WO2018041691A1 (en) 2016-08-31 2018-03-08 C.M.I. Cerniere Meccaniche Industriali S.R.L. Hinge device with damping of the terminal portion of the closing stroke
WO2019066332A1 (en) 2017-09-29 2019-04-04 Samsung Electronics Co., Ltd. Washing machine

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AT506756B1 (en) * 2008-04-16 2013-03-15 Grass Gmbh & Co Kg FURNITURE HINGE
WO2010102445A1 (en) * 2009-03-10 2010-09-16 Wu Zhixiang A damping hinge

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080289144A1 (en) 2007-05-23 2008-11-27 Nuovo Star S.P.A. Hinge for wings or doors
EP2284344A2 (en) 2009-07-30 2011-02-16 NUOVA STAR S.p.A. Improved hinge for wings or doors
WO2018041691A1 (en) 2016-08-31 2018-03-08 C.M.I. Cerniere Meccaniche Industriali S.R.L. Hinge device with damping of the terminal portion of the closing stroke
WO2019066332A1 (en) 2017-09-29 2019-04-04 Samsung Electronics Co., Ltd. Washing machine

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