EP3667007B1 - Damper, in particular for a hinge, hinge, in particular for a domestic appliance, and domestic appliance - Google Patents

Damper, in particular for a hinge, hinge, in particular for a domestic appliance, and domestic appliance Download PDF

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Publication number
EP3667007B1
EP3667007B1 EP18425099.1A EP18425099A EP3667007B1 EP 3667007 B1 EP3667007 B1 EP 3667007B1 EP 18425099 A EP18425099 A EP 18425099A EP 3667007 B1 EP3667007 B1 EP 3667007B1
Authority
EP
European Patent Office
Prior art keywords
piston
damper
valve element
hinge
disk
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.)
Active
Application number
EP18425099.1A
Other languages
German (de)
French (fr)
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EP3667007A1 (en
Inventor
Luca Stagnoli
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Apparatebau Gronbach Srl
Original Assignee
Apparatebau Gronbach Srl
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 Apparatebau Gronbach Srl filed Critical Apparatebau Gronbach Srl
Priority to EP18425099.1A priority Critical patent/EP3667007B1/en
Priority to SI201830999T priority patent/SI3667007T1/en
Publication of EP3667007A1 publication Critical patent/EP3667007A1/en
Application granted granted Critical
Publication of EP3667007B1 publication Critical patent/EP3667007B1/en
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Anticipated expiration legal-status Critical

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Classifications

    • 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
    • E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/04—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
    • E05F3/10—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction
    • E05F3/108—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction with piston rod protruding from the closer housing; Telescoping closers
    • 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
    • E05Y2201/21—Brakes
    • 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
    • E05Y2201/252—Brakes; Disengaging means, e.g. clutches; Holders, e.g. locks; Stops; Accessories therefore characterised by type of friction
    • E05Y2201/254—Fluid or viscous friction
    • E05Y2201/256—Fluid or viscous friction with pistons or vanes
    • 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
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/30—Application of doors, windows, wings or fittings thereof for domestic appliances

Definitions

  • the invention relates to a damper, in particular for a hinge, according to the preamble of patent claim 1.
  • Dampers for damping relative movements between a hinge arm and a hinge housing of a hinge, in particular for a household appliance, are already well known from the general prior art.
  • the damper has a housing with a working space.
  • the damper has a piston which is accommodated in the working space and can be moved translationally relative to the housing, by means of which the working space is divided into two working chambers.
  • the damper comprises a piston rod which is connected to the piston and can be moved translationally with the piston.
  • the CN 201 381 732 A apparently a damper for a household appliance.
  • the EP 3 214 248 A1 a damping device and a furniture hinge with such a damping device can be seen as known.
  • the object of the present invention is to create a damper so that the damper can be manufactured in a particularly cost-effective manner.
  • a first aspect of the invention relates to a damper for damping relative movements between a hinge arm and a hinge housing of a hinge, in particular for a household appliance.
  • the damper is designed to damp relative movements between the hinge arm and the hinge housing.
  • the hinge arm In the fully manufactured state of the hinge, for example, the hinge arm is held pivotably at least indirectly, in particular directly, on the hinge housing and is pivotable about at least or exactly one pivot axis relative to the hinge housing.
  • the hinge comprises the hinge arm, the hinge housing and the damper, by means of which relative movements between the hinge arm and the hinge housing can be damped.
  • the damper dampens relative movements between the hinge arm and the hinge housing when the hinge arm is pivoted relative to the hinge housing.
  • the damper has a housing which has or delimits a working space.
  • the damper includes a piston which is accommodated in the working space and can be moved translationally relative to the housing, by means of which the working space is divided into two working chambers, in particular working chambers lying opposite one another.
  • the damper also includes a piston rod which is connected to the piston and can be moved translationally with the piston relative to the housing.
  • the damper has a plate formed in one piece with the piston rod, to which the piston formed separately from the plate and separate from the piston rod is fastened.
  • the plate is characterized in particular by the fact that it is designed, for example, in the shape of a plate or disk and has a first outer circumference, in particular a first outer diameter, which is larger than a second Outer circumference, in particular as a second outer diameter, which is the piston rod.
  • the largest external circumference, in particular the largest external diameter, of the plate is larger than the largest external circumference, in particular than the largest external diameter, of the piston rod.
  • the first outer circumference in particular the first outer diameter, is larger than the second outer circumference or the second outer diameter.
  • the first outer circumference or the first outer diameter is at least 1.5 times, in particular at least 2 times, larger than the second outer circumference or the second outer diameter.
  • the piston rod is preferably round on the outer circumference, so that the piston rod has the shape of a right circular cylinder on the outer circumference, for example.
  • the piston rod is preferably cylindrical on the outer circumference side, so that the piston rod has the second outer circumference, in particular the second outer diameter.
  • the outer circumference of the plate is designed to be round, so that the outer circumference of the plate preferably has the shape of a right circular cylinder.
  • the plate preferably has a cylindrical outer circumference, so that the plate has the first outer circumference, in particular the first outer diameter.
  • the plate is also characterized, for example, in that it has a first length running in the longitudinal direction or in the axial direction of the piston rod, while the piston rod has a second length running in its longitudinal direction or in its axial direction.
  • the first length is significantly shorter than the second length, with the second length preferably being at least five times, in particular at least ten times, greater than the first length.
  • the piston rod ends along its direction of longitudinal extent on the plate, in particular at the beginning thereof.
  • the piston rod and the head integral with the piston rod thus form a piston rod assembly which is separate from the piston, the piston being attached to the piston rod assembly via the head.
  • the plate In relation to the piston rod device, the plate thus forms an enlargement of the outer circumference, in particular an enlargement of the outer diameter, in relation to the piston rod.
  • the piston and the plate each have at least one throughflow opening through which a damping fluid accommodated in the working chamber and designed, for example, as a liquid can flow.
  • the through-flow opening of the piston is assigned a valve element which is designed separately from the piston and separately from the plate and separately from the piston rod and is held on the piston, by means of which the through-flow opening of the piston can be blocked in a first direction for the damping fluid and in one of the first directions opposite second direction for the damping fluid can be released.
  • the valve element is made of a metallic material.
  • the valve element is elastically deformable at least in a partial area of the valve element and is thereby movable, in particular relative to the piston, between a closed position and at least one open position, ie elastically deformable.
  • valve element In the open position, the valve element releases the through-flow opening of the piston, so that the damping fluid can flow through the through-flow opening of the piston in the second direction. In the closed position, the valve element blocks the through-flow opening of the piston, so that the fluid cannot flow through the through-flow opening of the piston in the first direction.
  • the plate is at least predominantly, in particular completely, arranged in the piston and is thus surrounded by the piston, for example.
  • the damper can be manufactured particularly simply and inexpensively in such a way that, for example, initially the plate is inserted into the piston, in particular in the longitudinal direction of extension of the piston rod.
  • the piston can be attached to the plate in a particularly simple manner.
  • the plate is formed onto the piston rod by a cold pressing process and is therefore formed in one piece with the piston rod.
  • a further embodiment is characterized in that the plate is upset onto the piston rod by means of an upsetting process and is therefore formed in one piece with the piston rod.
  • the piston rod device can be manufactured particularly inexpensively.
  • the poppet is a first component of the damper and the piston is a second component of the damper.
  • the plate is also referred to as the first component and the piston is also referred to as the second component.
  • one of the components has at least one recess into which the other component engages, as a result of which the components are positioned relative to one another, in particular in a form-fitting manner.
  • the piston is designed separately from the plate, this allows the piston to be positioned relative to the plate in a time-saving and cost-effective manner.
  • the components are arranged on one another in a simple manner in such a way that the other component engages in the recess.
  • the one component is preferably the plate, so that the plate has the recess.
  • the other component is the piston, so that the piston engages in the recess.
  • the piston has at least one deformed collar that engages behind or around an edge region of the plate, by means of which the piston is fastened to the plate.
  • the piston is fastened to the plate in such a way that the shaped collar of the piston engages behind or around the edge area of the plate.
  • the damper can be manufactured particularly quickly and inexpensively, for example, in that the components are first arranged next to one another, in particular in such a way that the plate is inserted into the piston. The collar of the piston is then deformed, in particular plastically, as a result of which the collar surrounds or engages behind the edge region.
  • the piston is made of a plastic, in particular a thermoplastic.
  • the collar can, for example, be reshaped in a simple manner, in particular plastically, in that the collar is heated, for example, and reshaped by means of a stamp and thereby folded over.
  • the piston In order to be able to keep the costs particularly low, provision is also preferably made for the piston to be designed in one piece.
  • valve element has at least one recess into which a fastening element of the piston engages.
  • the valve element is held on the piston by means of the recess of the valve element and by means of the fastening element of the piston engaging in the recess.
  • the valve element can be attached to the piston in a particularly time-saving and cost-effective manner, so that the costs of the damper can be kept within a particularly low framework.
  • the fastening element is made from a plastic or from the plastic from which the piston is formed.
  • the fastening element is deformed by melting.
  • the fastening element engages behind at least one wall region of the valve element that at least partially delimits the recess of the valve element, as a result of which the valve element is held on the piston, in particular in a form-fitting manner.
  • the valve element can be fastened to the piston in a particularly simple and therefore cost-effective manner such that, for example, the fastening element is first inserted through the recess or inserted into the recess.
  • the fastening element is then, for example, melted or melted, in particular by means of a hot or heated stamp melted and thereby deformed in such a way that the fastening element surrounds or engages behind the wall area.
  • the valve element can be attached to the piston in a particularly time-saving and cost-effective manner.
  • a further embodiment which is not part of the invention relates to a damper for damping relative movements between a hinge arm and a hinge housing of a hinge, in particular for a household appliance.
  • the damper has a housing which has a working space.
  • a damping fluid in the form of a liquid, for example, is accommodated in the working chamber for damping the relative movements.
  • the damper includes a piston which is accommodated in the working space and can be moved translationally relative to the housing, by means of which the working space is divided into two working chambers.
  • the damper comprises a piston rod which is connected to the piston and which can be moved translationally with the piston relative to the housing.
  • the piston has at least one through-flow opening through which the damping fluid can flow, which is assigned a valve element which is formed separately from the piston and has at least one recess, by means of which the Flow-through opening of the piston can be blocked in a first direction for the damping fluid and can be released in a second direction opposite to the first direction for the damping fluid.
  • a fastening element of the piston made of plastic engages in the recess of the valve element, the fastening element being deformed by melting of the fastening element.
  • the fastening element engages behind or encompasses at least one wall region that at least partially delimits the recess of the valve element, as a result of which the valve element is held on the piston, in particular in a form-fitting manner.
  • the fastener is integral with a Base body of the piston or the piston formed as a whole, so that the piston is preferably formed in one piece.
  • a hinge can be provided, in particular for a household appliance, the hinge having a hinge housing and a hinge arm which is pivotably held on the hinge housing.
  • the hinge can include a damper according to claim 1 and/or a damper according to the embodiment not according to the invention, so that relative movements between the hinge arm and the hinge housing are to be damped by means of the damper.
  • the hinge comprises a hinge housing and a pivot arm, which is held pivotably on the hinge housing and is therefore pivotable, for example, about at least or exactly one pivot axis relative to the hinge housing.
  • the household appliance also includes, for example, an appliance housing with an opening. The opening is, for example, an opening of a cooking space or a receiving space in which food or objects can be arranged.
  • the domestic appliance includes an appliance door which is pivotably held on the appliance housing via the hinge and can therefore be pivoted between a closed position and at least one open position relative to the appliance housing.
  • the appliance door In the closed position, the appliance door covers the opening at least partially, in particular at least predominantly or completely, as a result of which the opening is closed by means of the appliance door in the closed position.
  • the appliance door In the open position, the appliance door at least partially releases the opening.
  • the hinge arm is connected to the appliance door, while the hinge housing is attached to the appliance housing. If the appliance door is moved relative to the appliance housing, that is to say pivoted, this causes relative movements, in particular rotational relative movements, between the hinge arm and the hinge housing.
  • Relative movements, in particular rotational relative movements, between the hinge arm and the hinge housing can be damped by means of the damper 10, so that, for example, an undesirably rapid movement of the appliance door into the closed position and/or into the open position can be avoided by means of the damper 10.
  • the damper 10 has an in 1 shown transparent housing 12, which has a working space 14 or limited.
  • the damper 10 also includes a particularly good in combination with 4 recognizable piston 16, through which the working space 14 is divided into two working chambers 18 and 20.
  • the damper 10 comprises a piston rod 22 which is connected to the piston 16 and can therefore be moved translationally with the piston 16 relative to the housing 12 as a hydraulic fluid.
  • the damper 10 is designed, for example, as a hydraulic damper.
  • the relative movements between the hinge housing and the hinge arm can be damped by means of the damping fluid.
  • the damping fluid is, for example, an oil, in particular a silicone oil.
  • the piston rod 22 and with it the piston 16 are along an in 2 direction of movement illustrated by a double arrow 24 relative to the housing 12 translationally movable. If, for example, the piston rod 22 and with it the piston 16 are moved in a direction that coincides with the direction of movement and in 2 If the first direction illustrated by an arrow 26 is moved translationally relative to the housing 12, this causes a reduction in volume of the working chamber 20 and an increase in volume of the working chamber 18, with the working chambers 18 and 20 lying opposite one another along the direction of movement. In other words, the piston 16 is arranged between the working chambers 18 and 20 along the direction of movement.
  • a spring element 28 formed, for example, from a metallic material is arranged in the working chamber 20, which in the present case is designed as a spiral spring.
  • spring element 28 is thereby tensioned, in particular compressed.
  • spring element 28, for example is supported at least indirectly, in particular directly, along the direction of movement on a base 30 of housing 12, wherein base 30 at least partially, in particular at least predominantly or completely, delimits working chamber 20 in the first direction, for example.
  • the spring element 28 is supported at least indirectly, in particular directly, on the piston 16 along the direction of movement.
  • the spring element 28 By tensioning, in particular compressing, the spring element 28, the spring element 28 provides a spring force which, for example, can be translated into an in 2 illustrated by an arrow 32, coinciding with the direction of movement and the first direction opposite second direction acts.
  • the piston 16 and thus the piston rod 22 can be moved translationally in the second direction relative to the housing 12 . If the piston 16 and thus the piston rod 22 are moved in a translatory manner in the second direction relative to the housing 12 , this causes an increase in the volume of the working chamber 20 and a reduction in the volume of the working chamber 18 .
  • By moving the piston rod 22 in the first direction at least a partial area of the piston rod 22 is retracted into the housing 12, that is to say moved into it.
  • the piston rod 22 in the second direction the partial area is extended or moved out of the housing 12 .
  • the damper 10 also includes a head 34 which, for example, can be moved with the piston rod 22 in a translational manner relative to the housing 12 .
  • the head 34 is, for example, formed separately from the piston rod 22 and is connected to the piston rod 22 .
  • the damper 10 can be supported or is supported at least indirectly, in particular directly, for example via the housing 12 on a first component of the hinge.
  • the damper 10 can be supported or is supported at least indirectly, in particular directly, via the head 34 or via the piston rod 22 on a second component of the hinge.
  • the relative movements between the hinge arm and the hinge housing described above result, for example, in relative movements between the components of the hinge.
  • the damper 10 also has a cage 37 arranged in the working space 14 and a compensation foam 36 held on or in the cage 37 and thus arranged in the working space 14, which is held in the working space 14 by means of the cage 37, for example.
  • the housing 12 itself has an opening, which in the present case is at least closed by means of a closure 38 embodied, for example, as a sleeve.
  • the cage 37, the compensation foam 36 and the closure 38 each have flow openings through which the piston rod 22 passes.
  • a first end E1 of the piston rod 22 located outside the housing 12 can be located outside the housing 12, while a second end E2 of the piston rod 22 located opposite the first end E1 is located in the working chamber 14 and thus in the housing 12, with the piston rod 22 is connected to the piston 16 via its second end E2.
  • the damper 10 - how particularly good in combination with 3 can be seen - a one-piece design with the piston rod 22 plate 40 on which - how particularly good 4 is recognizable - the piston 16, which is designed separately from the plate 40 and separately from the piston rod 22, is fastened, in particular exclusively in a form-fitting manner.
  • the piston rod 22 and the plate 40 are formed from a metallic material. Out of 4 it can be seen that the plate 40 is at least predominantly arranged in the piston 16 and is therefore at least predominantly surrounded by the piston 16 .
  • the plate 40 is formed onto the piston rod by a cold pressing process, with the plate 40 preferably being upset on the piston rod 22 by an upsetting process.
  • the plate 40 has recesses 42 which are spaced apart from one another in the circumferential direction of the plate 40 and thus in the circumferential direction of the piston rod 22 .
  • the piston 16 which is preferably designed in one piece and is made of a plastic, has lugs 44 which correspond to the recesses 42 and which engage in the corresponding recesses 42 of the plate 40 . This engages the piston 16, in particular via the lugs 44, in the recesses 42, whereby the piston 16 interacts positively with the plate 40 and is positively positioned in the circumferential direction of the plate 40 relative to the plate 40.
  • the piston 16 can be fastened to the plate 40 in a particularly simple, time-saving and cost-effective manner in a desired position in relation to the direction of rotation of the plate 40 and relative to the plate 40, in particular in such a way that the plate 40 extends in the direction of longitudinal extension and thus in axial direction of the piston rod 22 in the piston 16 is inserted in such a way that the lugs 44 are inserted into the recess 42 and thus come to rest in the recesses 42 .
  • the piston 16 has at least one deformed collar 48 that engages behind or around an edge region 46 of the plate 40, by means of which the piston 16 is fastened to the plate 40, in particular in a form-fitting manner. This can look particularly good 4 be recognized.
  • the piston rod 22 and with it the plate 40 are moved in the axial direction of the piston rod 22 relative to the piston 16 in such a way that the plate 40 is inserted into the piston 16.
  • An in 4 A portion of the stamp 50 that can be seen is moved relative to the piston 16 in such a way that the stamp 50 first comes into support contact with the collar 48 that has not yet been formed.
  • the stamp 50 is - as in 4 illustrated by an arrow 52, is then moved further in the direction of the plate 40, as a result of which the collar 48 is folded over, i.e. plastically deformed and thus reshaped in such a way that the collar 48 encompasses or engages behind the edge region 46 and the piston 16 is thereby positively attached to the Plate 40 is attached.
  • the stamp 50 is or is preferably heated or heated, as a result of which the collar 48 is or can be heated by means of the stamp 50, in particular during its reshaping.
  • the collar 48 is formed, like the piston, from the above-mentioned plastic, which is formed, for example, as a thermoplastic, it can be deformed particularly quickly and inexpensively, in particular plastically.
  • both the piston 16 and the plate 40 each have at least one throughflow opening 54 or 56 through which the damping fluid can flow.
  • the previously described positioning of the piston 16 relative to the plate 40, in particular in the circumferential direction of the plate 40 allows the flow openings 54 and 56 to be positioned or aligned relative to one another, in particular in the circumferential direction of the plate 40 and thus in the circumferential direction of the piston 16, in such a way that the flow openings 54 and 56 overlap or cover each other at least partially.
  • This can ensure that the damping fluid can flow through both the flow opening 54 and the flow opening 56 when the piston rod 22 and the plate 40 and thus the piston 16 are translated relative to the housing 12 along the direction of movement.
  • the probability of incorrect assembly can be kept low, and a desired functionality of the damper 10 can be guaranteed.
  • the damper 10 has a valve element 58 which is formed separately from the piston 16 and separately from the plate 40 and separately from the piston rod 22 and is held on the piston 16 and is formed from a metallic material, for example.
  • the exemplary embodiment shown has the valve element 58 on what is known as a backflow valve flap 60 , also referred to simply as a valve flap. Out of 4 it can be seen that the return flow valve flap 60 is connected to a base body 62 of the valve element 58 , it being possible for the return flow valve flap 60 to be formed in one piece with the base body 62 .
  • the valve element 58 is elastically deformable in such a way that the return flow valve flap 60 and thus the valve element 58 between an in 8 recognizable closed position S and at least one in 9 recognizable open position O relative to the piston 16 is at least partially movable.
  • the valve element 58 is assigned to the through-flow opening 54 of the piston 16, so that the through-flow opening 54 can be diverted into an in 8 First flow direction for the damping fluid, illustrated by an arrow 64, can be blocked and in a direction opposite to the first flow direction and in 9 second flow direction for the damping fluid, illustrated by an arrow 66, can be released. Illustrated in 8 an arrow 66 a flow of the damping fluid from the working chamber 20 into the working chamber 18. In 9 Arrows 68 illustrate a flow of the damping fluid from the working chamber 18 into the working chamber 20.
  • valve element 58 recesses 70 shows how particularly well 7 can be seen - the valve element 58 recesses 70 on.
  • the respective recess 70 is, for example, as a Through hole formed.
  • the piston 16 has in particular the recess 70 at least or exactly one fastening element 72, which is formed in particular by the fact that the piston 16 is formed in one piece and is made of a plastic from the plastic from which the piston 16 is made.
  • the valve element 58 is held in a form-fitting manner on the piston 16 by means of the respective recess 70 and by means of the respective fastening element 72 in such a way that the respective fastening element 72 engages in the respective, corresponding recess 70 .
  • the respective fastening element 72 is deformed by melting the respective fastening element 72, as a result of which the fastening element 72 engages behind at least one wall region 74 of the valve element 58 that at least partially delimits the respective recess 70 of the valve element 58.
  • the valve element 58 is held in a form-fitting manner on the piston 16 and can therefore be moved with the piston, for example.
  • the return flow valve flap 60 can also be seen, which can be moved, in particular pivoted, by elastic deformation of the valve element 58 relative to the base body 62 and relative to the piston 16 between the closed position S and the open position O.
  • the respective fastening element 72 is formed as a so-called mushroom head by melting, which surrounds or engages behind the wall region 74 .
  • the function and thus a desired damping effect of the damper 10 can be particularly good 6 , 4 , 8th and 9 be recognized. If the piston rod 22 and thus the plate 40 and the piston 16 are moved translationally in the first direction relative to the housing 12, the valve element 58 is moved into the closed position S or held in the closed position S by means of the damping fluid. As in 8 illustrated by arrow 66, the damping fluid from working chamber 20 cannot flow through flow opening 54, but rather the damping fluid flows through channels 76, which are much narrower than flow opening 54 and are located in an edge region of piston 16.
  • the ducts 76 open into a narrow duct 78 which opens into a through-flow duct 80 of the piston 16 adjoining the through-flow opening 54 .
  • the damping fluid can flow into the channel 80 and flow through the channel 80 via the channel 78 or from the channel 78 , bypassing the flow opening 54 .
  • the damping fluid can then flow through the through-flow opening 56 of the plate 40, as a result of which the damping fluid can flow out of the working chamber 20 via the channels 76 and 78 and through the through-flow channel 80 and through the through-flow opening 56 into the working chamber 18.
  • the damper 10 provides a first damping force or a first damping performance.
  • the valve element 58 is moved into the open position O by means of the damping fluid. As a result, the valve element 58 releases the through-flow opening 54 so that the damping fluid can flow out of the working chamber 18 through the through-flow opening 54 and thus into the working chamber 20 .
  • the damper 10 provides, for example, a second damping force or a second damping capacity, which is lower than the first damping force or the first damping capacity.
  • the damping fluid flows on its way from the working chamber 18 into the working chamber 20 in comparison to the channels 76 and 78 at least predominantly through the through-flow opening 54, although part of the damping fluid also flows through the channels 76 and 78 and thus flows into the working chamber 20 via the channels 76 and 78 .
  • a particularly advantageous damping effect can be realized in this way.
  • the second damping force or the second damping power can be at least almost zero.

Description

Die Erfindung betrifft einen Dämpfer, insbesondere für ein Scharnier, gemäß dem Oberbegriff von Patentanspruch 1.The invention relates to a damper, in particular for a hinge, according to the preamble of patent claim 1.

Dämpfer zum Dämpfen von Relativbewegungen zwischen einem Scharnierarm und einem Scharniergehäuse eines Scharniers, insbesondere für ein Haushaltsgerät, sind aus dem allgemeinen Stand der Technik bereits hinlänglich bekannt. Der Dämpfer weist ein Gehäuse mit einem Arbeitsraum auf. Außerdem weist der Dämpfer einen in dem Arbeitsraum aufgenommenen und relativ zu dem Gehäuse translatorisch bewegbaren Kolben auf, durch welchen der Arbeitsraum in zwei Arbeitskammern unterteilt ist. Des Weiteren umfasst der Dämpfer eine mit dem Koben verbundene und mit dem Kolben translatorisch mitbewegbare Kolbenstange.Dampers for damping relative movements between a hinge arm and a hinge housing of a hinge, in particular for a household appliance, are already well known from the general prior art. The damper has a housing with a working space. In addition, the damper has a piston which is accommodated in the working space and can be moved translationally relative to the housing, by means of which the working space is divided into two working chambers. Furthermore, the damper comprises a piston rod which is connected to the piston and can be moved translationally with the piston.

Die CN 201 381 732 A offenbar einen Dämpfer für ein Haushaltsgerät. Außerdem sind der EP 3 214 248 A1 eine Dämpfungseinrichtung und ein Möbelscharnier mit einer solchen Dämpfungseinrichtung als bekannt zu entnehmen.The CN 201 381 732 A apparently a damper for a household appliance. Besides are the EP 3 214 248 A1 a damping device and a furniture hinge with such a damping device can be seen as known.

Aufgabe der vorliegenden Erfindung ist es, einen Dämpfer zu schaffen, sodass der Dämpfer auf besonders kostengünstige Weise hergestellt werden kann.The object of the present invention is to create a damper so that the damper can be manufactured in a particularly cost-effective manner.

Diese Aufgabe wird erfindungsgemäß durch einen Dämpfer mit den Merkmalen des Patentanspruchs 1 gelöst. Vorteilhafte Ausgestaltungen mit zweckmäßigen Weiterbildungen der Erfindung sind in den übrigen Ansprüchen angegeben.According to the invention, this object is achieved by a damper having the features of patent claim 1 . Advantageous configurations with expedient developments of the invention are specified in the remaining claims.

Ein erster Aspekt der Erfindung betrifft einen Dämpfer zum Dämpfen von Relativbewegungen zwischen einem Scharnierarm und einem Scharniergehäuse eines Scharniers, insbesondere für ein Haushaltsgerät. Dies bedeutet, dass der Dämpfer dazu ausgebildet ist, Relativbewegungen zwischen dem Scharnierarm und dem Scharniergehäuse zu dämpfen. In vollständig hergestelltem Zustand des Scharniers ist beispielsweise der Scharnierarm zumindest mittelbar, insbesondere direkt, verschwenkbar an dem Scharniergehäuse gehalten und dabei um wenigstens oder genau eine Schwenkachse relativ zu dem Scharniergehäuse verschwenkbar. Dabei umfasst das Scharnier in seinem vollständig hergestellten Zustand den Scharnierarm, das Scharniergehäuse und den Dämpfer, mittels welchem Relativbewegungen zwischen dem Scharnierarm und dem Scharniergehäuse gedämpft werden können. Insbesondere dämpft der Dämpfer Relativbewegungen zwischen dem Scharnierarm und dem Scharniergehäuse, wenn der Scharnierarm relativ zu dem Scharniergehäuse verschwenkt wird.A first aspect of the invention relates to a damper for damping relative movements between a hinge arm and a hinge housing of a hinge, in particular for a household appliance. This means that the damper is designed to damp relative movements between the hinge arm and the hinge housing. In the fully manufactured state of the hinge, for example, the hinge arm is held pivotably at least indirectly, in particular directly, on the hinge housing and is pivotable about at least or exactly one pivot axis relative to the hinge housing. In its fully manufactured state, the hinge comprises the hinge arm, the hinge housing and the damper, by means of which relative movements between the hinge arm and the hinge housing can be damped. In particular, the damper dampens relative movements between the hinge arm and the hinge housing when the hinge arm is pivoted relative to the hinge housing.

Der Dämpfer weist ein Gehäuse auf, welches einen Arbeitsraum aufweist beziehungsweise begrenzt. Außerdem umfasst der Dämpfer einen in dem Arbeitsraum aufgenommen und relativ zu dem Gehäuse translatorisch bewegbaren Kolben, durch welchen der Arbeitsraum in zwei, insbesondere einander gegenüberliegende, Arbeitskammern unterteilt ist. Der Dämpfer umfasst auch eine mit dem Kolben verbundene und mit dem Kolben relativ zu dem Gehäuse translatorisch mitbewegbare Kolbenstange.The damper has a housing which has or delimits a working space. In addition, the damper includes a piston which is accommodated in the working space and can be moved translationally relative to the housing, by means of which the working space is divided into two working chambers, in particular working chambers lying opposite one another. The damper also includes a piston rod which is connected to the piston and can be moved translationally with the piston relative to the housing.

Um nun den Dämpfer und somit das Scharnier besonders einfach und kostengünstig herstellen zu können, ist es erfindungsgemäß vorgesehen, dass der Dämpfer einen einstückig mit der Kolbenstange ausgebildeten Teller aufweist, an welchem der separat von dem Teller und separat von der Kolbenstange ausgebildete Kolben befestigt ist. Der Teller zeichnet sich insbesondere dadurch aus, dass er beispielsweise platten- oder scheibenförmig ausgebildet ist und einen ersten Außenumfang, insbesondere einen ersten Außendurchmesser, aufweist, welcher größer als ein zweiter Außenumfang, insbesondere als ein zweiter Außendurchmesser, der Kolbenstange ist. Insbesondere ist der größte Außenumfang, insbesondere der größte Außendurchmesser, des Tellers größer als der größte Außenumfang, insbesondere als der größte Außendurchmesser, der Kolbenstange. Der erste Außenumfang, insbesondere der erste Außendurchmesser, ist dabei größer als der zweite Außenumfang beziehungsweise als der zweite Außendurchmesser. Insbesondere ist beispielsweise der erste Außenumfang beziehungsweise der erste Außendurchmesser mindestens 1,5 mal, insbesondere mindestens 2 mal, größer als der zweite Außenumfang beziehungsweise als der zweite Außendurchmesser.In order to be able to produce the damper and thus the hinge in a particularly simple and cost-effective manner, the invention provides that the damper has a plate formed in one piece with the piston rod, to which the piston formed separately from the plate and separate from the piston rod is fastened. The plate is characterized in particular by the fact that it is designed, for example, in the shape of a plate or disk and has a first outer circumference, in particular a first outer diameter, which is larger than a second Outer circumference, in particular as a second outer diameter, which is the piston rod. In particular, the largest external circumference, in particular the largest external diameter, of the plate is larger than the largest external circumference, in particular than the largest external diameter, of the piston rod. The first outer circumference, in particular the first outer diameter, is larger than the second outer circumference or the second outer diameter. In particular, for example, the first outer circumference or the first outer diameter is at least 1.5 times, in particular at least 2 times, larger than the second outer circumference or the second outer diameter.

Vorzugsweise ist die Kolbenstange außenumfangsseitig rund, sodass die Kolbenstange beispielsweise außenumfangsseitig die Form eines geraden Kreiszylinders aufweist. Somit ist die Kolbenstange außenumfangsseitig vorzugsweise zylindrisch ausgebildet, sodass die Kolbenstange den zweiten Außenumfang, insbesondere den zweiten Außendurchmesser, aufweist. Ferner ist es vorzugsweise vorgesehen, dass der Teller außenumfangsseitig rund ausgestaltet ist, sodass der Teller außenumfangsseitig vorzugsweise die Form eines geraden Kreiszylinders aufweist. Mit anderen Worten ist der Teller vorzugsweise außenumfangsseitig zylindrisch ausgebildet, sodass der Teller den ersten Außenumfang, insbesondere den ersten Außendurchmesser, aufweist. Ferner zeichnet sich der Teller beispielsweise dadurch aus, dass er eine in Längserstreckungsrichtung beziehungsweise in axialer Richtung der Kolbenstange verlaufende erste Länge aufweist, während die Kolbenstange eine entlang ihrer Längserstreckungsrichtung beziehungsweise entlang ihrer axialen Richtung verlaufende zweite Länge aufweist. Die erste Länge ist dabei wesentlich geringer als die zweite Länge, wobei die zweite Länge vorzugsweise mindestens fünfmal, insbesondere mindestens zehnmal, größer als die erste Länge ist.The piston rod is preferably round on the outer circumference, so that the piston rod has the shape of a right circular cylinder on the outer circumference, for example. Thus, the piston rod is preferably cylindrical on the outer circumference side, so that the piston rod has the second outer circumference, in particular the second outer diameter. Furthermore, it is preferably provided that the outer circumference of the plate is designed to be round, so that the outer circumference of the plate preferably has the shape of a right circular cylinder. In other words, the plate preferably has a cylindrical outer circumference, so that the plate has the first outer circumference, in particular the first outer diameter. The plate is also characterized, for example, in that it has a first length running in the longitudinal direction or in the axial direction of the piston rod, while the piston rod has a second length running in its longitudinal direction or in its axial direction. The first length is significantly shorter than the second length, with the second length preferably being at least five times, in particular at least ten times, greater than the first length.

Ferner kann es vorzugsweise vorgesehen sein, dass die Kolbenstange entlang ihrer Längserstreckungsrichtung an dem Teller, insbesondere an dessen Beginn, endet. Die Kolbenstange und der einstückig mit der Kolbenstange ausgebildete Teller bilden somit eine Kolbenstangeneinrichtung, welche separat von dem Kolben ausgebildet ist, wobei der Kolben an der Kolbenstangeneinrichtung über den Teller befestigt ist. Bezogen auf die Kolbenstangeneinrichtung bildet somit der Teller eine Außenumfangsvergrößerung, insbesondere eine Außendurchmesservergrößerung, gegenüber der Kolbenstange. Es wurde gefunden, dass eine besonders einfache und somit zeit- und kostengünstige Herstellung des Dämpfers realisiert werden kann, wenn - wie zuvor beschrieben - die Kolbenstange einstückig mit dem Teller ausgebildet und der Kolben separat von der Kolbenstange und separat von dem Teller hergestellt und mit dem Teller verbunden, das heißt an dem Teller befestigt wird.Furthermore, it can preferably be provided that the piston rod ends along its direction of longitudinal extent on the plate, in particular at the beginning thereof. The piston rod and the head integral with the piston rod thus form a piston rod assembly which is separate from the piston, the piston being attached to the piston rod assembly via the head. In relation to the piston rod device, the plate thus forms an enlargement of the outer circumference, in particular an enlargement of the outer diameter, in relation to the piston rod. It It was found that a particularly simple and thus time- and cost-effective production of the damper can be realized if - as described above - the piston rod is formed in one piece with the plate and the piston is produced separately from the piston rod and separately from the plate and with the plate connected, i.e. attached to the plate.

Erfindungsgemäß weisen der Kolben und der Teller jeweils wenigstens eine von einem in der Arbeitskammer aufgenommenen und beispielsweise als Flüssigkeit ausgebildeten Dämpfungsfluid durchströmbare Durchströmöffnung auf.According to the invention, the piston and the plate each have at least one throughflow opening through which a damping fluid accommodated in the working chamber and designed, for example, as a liquid can flow.

Dadurch kann auf kostengünstige Weise eine vorteilhafte Dämpfungswirkung beziehungsweise Dämpfungsfunktion des Dämpfers sichergestellt werden.As a result, an advantageous damping effect or damping function of the damper can be ensured in a cost-effective manner.

Dabei ist der Durchströmöffnung des Kolbens ein separat von dem Kolben und separat von dem Teller und separat von der Kolbenstange ausgebildetes und an dem Kolben gehaltenes Ventilelement zugeordnet, mittels welchem die Durchströmöffnung des Kolbens in eine erste Richtung für das Dämpfungsfluid versperrbar und in eine der ersten Richtung entgegengesetzte zweite Richtung für das Dämpfungsfluid freigebbar ist. Hierdurch kann auf einfache und kostengünstige Weise eine besonders vorteilhafte Dämpfungsfunktion des Dämpfers gewährleistet werden. Beispielsweise ist das Ventilelement aus einem metallischen Werkstoff gebildet. Alternativ oder zusätzlich ist das Ventilelement zumindest in einem Teilbereich des Ventilelements elastisch verformbar und dadurch, insbesondere relativ zu dem Kolben, zwischen einer Schließstellung und wenigstens einer Offenstellung bewegbar, das heißt elastisch verformbar. In der Offenstellung gibt das Ventilelement die Durchströmöffnung des Kolbens frei, sodass das Dämpfungsfluid in die zweite Richtung durch die Durchströmöffnung des Kolbens hindurchströmen kann. In der Schließstellung versperrt das Ventilelement die Durchströmöffnung des Kolbens, sodass dann das Fluid nicht in die erste Richtung durch die Durchströmöffnung des Kolbens hindurchströmen kann.The through-flow opening of the piston is assigned a valve element which is designed separately from the piston and separately from the plate and separately from the piston rod and is held on the piston, by means of which the through-flow opening of the piston can be blocked in a first direction for the damping fluid and in one of the first directions opposite second direction for the damping fluid can be released. In this way, a particularly advantageous damping function of the damper can be ensured in a simple and cost-effective manner. For example, the valve element is made of a metallic material. Alternatively or additionally, the valve element is elastically deformable at least in a partial area of the valve element and is thereby movable, in particular relative to the piston, between a closed position and at least one open position, ie elastically deformable. In the open position, the valve element releases the through-flow opening of the piston, so that the damping fluid can flow through the through-flow opening of the piston in the second direction. In the closed position, the valve element blocks the through-flow opening of the piston, so that the fluid cannot flow through the through-flow opening of the piston in the first direction.

Dabei hat es sich als besonders vorteilhaft gezeigt, wenn der Teller zumindest überwiegend, insbesondere vollständig, in dem Kolben angeordnet und somit beispielsweise von dem Kolben umgeben ist. Hierdurch kann der Dämpfer derart Besonders einfach und kostengünstig hergestellt werden, dass beispielsweise zunächst der Teller, insbesondere in Längserstreckungsrichtung der Kolbenstange, in den Kolben eingesteckt wird. In der Folge kann der Kolben auf besonders einfache Weise an dem Teller befestigt werden.It has proven to be particularly advantageous if the plate is at least predominantly, in particular completely, arranged in the piston and is thus surrounded by the piston, for example. As a result, the damper can be manufactured particularly simply and inexpensively in such a way that, for example, initially the plate is inserted into the piston, in particular in the longitudinal direction of extension of the piston rod. As a result, the piston can be attached to the plate in a particularly simple manner.

Um den Dämpfer besonders kostengünstig herstellen zu können, ist es in weiterer Ausgestaltung der Erfindung vorgesehen, dass der Teller durch ein Kaltpressverfahren an die Kolbenstange angeformt und dadurch einstückig mit der Kolbenstange ausgebildet ist.In order to be able to produce the damper in a particularly cost-effective manner, it is provided in a further embodiment of the invention that the plate is formed onto the piston rod by a cold pressing process and is therefore formed in one piece with the piston rod.

Eine weitere Ausführungsform zeichnet sich dadurch aus, dass der Teller durch ein Stauchverfahren an die Kolbenstange angestaucht und dadurch einstückig mit der Kolbenstange ausgebildet ist. Dadurch kann die Kolbenstangeneinrichtung besonders kostengünstig hergestellt werden.A further embodiment is characterized in that the plate is upset onto the piston rod by means of an upsetting process and is therefore formed in one piece with the piston rod. As a result, the piston rod device can be manufactured particularly inexpensively.

Bei einer weiteren Ausführungsform der Erfindung ist der Teller ein erstes Bauelement des Dämpfers, und der Kolben ist ein zweites Bauelement des Dämpfers. Mit anderen Worten wird der Teller auch als erstes Bauelement und der Kolben auch als zweites Bauelement bezeichnet. Dabei ist es vorzugsweise vorgesehen, dass eines der Bauelemente wenigstens eine Ausnehmung aufweist, in welche das andere Bauelement eingreift, wodurch die Bauelemente relativ zueinander, insbesondere formschlüssig, positioniert sind. Dadurch kann im Lichte dessen, dass der Kolben separat von dem Teller ausgestaltet ist, eine zeit- und kostengünstige Positionierung des Kolbens relativ zu dem Teller realisiert werden. Hierzu werden die Bauelemente auf einfache Weise derart aneinander angeordnet, dass das andere Bauelement in die Ausnehmung eingreift. Hierdurch können eine fehlerfreie Montage und in der Folge eine gewünschte Funktionsfähigkeit des Dämpfers gewährleistet werden beziehungsweise Montagefehler beziehungsweise deren Wahrscheinlichkeit können gering gehalten werden.In another embodiment of the invention, the poppet is a first component of the damper and the piston is a second component of the damper. In other words, the plate is also referred to as the first component and the piston is also referred to as the second component. It is preferably provided that one of the components has at least one recess into which the other component engages, as a result of which the components are positioned relative to one another, in particular in a form-fitting manner. In view of the fact that the piston is designed separately from the plate, this allows the piston to be positioned relative to the plate in a time-saving and cost-effective manner. For this purpose, the components are arranged on one another in a simple manner in such a way that the other component engages in the recess. As a result, error-free assembly and, as a result, the desired functionality of the damper can be ensured, or assembly errors or their probability can be kept low.

Vorzugsweise ist das eine Bauelement der Teller, sodass der Teller die Ausnehmung aufweist. Somit ist das andere Bauelement der Kolben, sodass der Kolben in die Ausnehmung eingreift. Hierdurch können sowohl der Teller als auch der Kolben besonders kostengünstig hergestellt werden.The one component is preferably the plate, so that the plate has the recess. Thus, the other component is the piston, so that the piston engages in the recess. As a result, both the plate and the piston can be manufactured particularly inexpensively.

In weiterer Ausgestaltung der Erfindung weist der Kolben wenigstens einen umgeformten und dadurch einen Randbereich des Tellers hintergreifenden beziehungsweise umgreifenden Kragen auf, mittels welchem der Kolben an dem Teller befestigt ist. Mit anderen Worten ist der Kolben derart an dem Teller befestigt, dass der umgeformte Kragen des Kolbens den Randbereich des Tellers hintergreift beziehungsweise umgreift. Dadurch kann der Dämpfer beispielsweise derart besonders zeit- und kostengünstig hergestellt werden, dass die Bauelemente zunächst aneinander angeordnet werden, insbesondere derart, dass der Teller in den Kolben eingesteckt wird. Daraufhin wird der Kragen des Kolbens, insbesondere plastisch, umgeformt, wodurch der Kragen den Randbereich umgreift beziehungsweise hintergreift.In a further embodiment of the invention, the piston has at least one deformed collar that engages behind or around an edge region of the plate, by means of which the piston is fastened to the plate. In other words, the piston is fastened to the plate in such a way that the shaped collar of the piston engages behind or around the edge area of the plate. As a result, the damper can be manufactured particularly quickly and inexpensively, for example, in that the components are first arranged next to one another, in particular in such a way that the plate is inserted into the piston. The collar of the piston is then deformed, in particular plastically, as a result of which the collar surrounds or engages behind the edge region.

Um dabei den Dämpfer besonders zeit- und kostengünstig herstellen und insbesondere den Kolben auf einfache Weise an dem Teller befestigen zu können ist es in weiterer Ausgestaltung der Erfindung vorgesehen, dass der Kolben aus einem Kunststoff, insbesondere aus einem Thermoplasten, gebildet ist. Dadurch kann der Kragen beispielsweise derart auf einfache Weise, insbesondere plastisch, umgeformt werden, dass der Kragen beispielsweise erwärmt und mittels eines Stempels umgeformt und dadurch umgelegt wird.In order to be able to produce the damper particularly quickly and inexpensively and in particular to be able to fasten the piston to the plate in a simple manner, it is provided in a further embodiment of the invention that the piston is made of a plastic, in particular a thermoplastic. As a result, the collar can, for example, be reshaped in a simple manner, in particular plastically, in that the collar is heated, for example, and reshaped by means of a stamp and thereby folded over.

Um die Kosten besonders gering halten zu können, ist es ferner vorzugsweise vorgesehen, dass der Kolben einstückig ausgebildet ist.In order to be able to keep the costs particularly low, provision is also preferably made for the piston to be designed in one piece.

Weiterhin hat es sich als besonders vorteilhaft gezeigt, wenn das Ventilelement wenigstens eine Ausnehmung aufweist, in welche ein Befestigungselement des Kolbens eingreift. Dabei ist das Ventilelement mittels der Ausnehmung des Ventilelements und mittels des in die Ausnehmung eingreifenden Befestigungselements des Kolbens an dem Kolben gehalten. Auf diese Weise kann das Ventilelement besonders zeit- und kostengünstig an dem Kolben befestigt werden, sodass die Kosten des Dämpfers in einem besonders geringen Rahmen gehalten werden können.Furthermore, it has proven particularly advantageous if the valve element has at least one recess into which a fastening element of the piston engages. The valve element is held on the piston by means of the recess of the valve element and by means of the fastening element of the piston engaging in the recess. In this way, the valve element can be attached to the piston in a particularly time-saving and cost-effective manner, so that the costs of the damper can be kept within a particularly low framework.

Dabei hat es sich besonders vorteilhaft gezeigt, wenn das Befestigungselement aus einem Kunststoff beziehungsweise aus dem Kunststoff, aus welchem der Kolben gebildet ist, gebildet ist. Dabei ist das Befestigungselement durch Schmelzen verformt. Hierdurch hintergreift das Befestigungselement wenigstens einen die Ausnehmung des Ventilelements zumindest teilweise begrenzenden Wandungsbereich des Ventilelements, wodurch das Ventilelement, insbesondere formschlüssig, an dem Kolben gehalten ist. Hierdurch kann das Ventilelement auf besonders einfache und somit kostengünstige Weise derart an dem Kolben befestigt werden, dass beispielsweise das Befestigungselement zunächst durch die Ausnehmung hindurchgesteckt beziehungsweise in die Ausnehmung eingesteckt wird. Daraufhin wird beispielsweise das Befestigungselement, insbesondere mittels eines heißen beziehungsweise erwärmten Stempels, geschmolzen beziehungsweise angeschmolzen und dadurch verformt, derart, dass das Befestigungselement den Wandungsbereich umgreift beziehungsweise hintergreift. Auf diese Weise kann das Ventilelement besonders zeit- und kostengünstig an dem Kolben befestigt werden.It has proven to be particularly advantageous if the fastening element is made from a plastic or from the plastic from which the piston is formed. In this case, the fastening element is deformed by melting. As a result, the fastening element engages behind at least one wall region of the valve element that at least partially delimits the recess of the valve element, as a result of which the valve element is held on the piston, in particular in a form-fitting manner. As a result, the valve element can be fastened to the piston in a particularly simple and therefore cost-effective manner such that, for example, the fastening element is first inserted through the recess or inserted into the recess. The fastening element is then, for example, melted or melted, in particular by means of a hot or heated stamp melted and thereby deformed in such a way that the fastening element surrounds or engages behind the wall area. In this way, the valve element can be attached to the piston in a particularly time-saving and cost-effective manner.

Eine weitere Ausführungsform, die nicht Teil der Erfindung ist, betrifft einen Dämpfer zum Dämpfen von Relativbewegungen zwischen einem Scharnierarm und einem Scharniergehäuse eines Scharniers, insbesondere für ein Haushaltsgerät. Der Dämpfer weist ein Gehäuse auf, welches einen Arbeitsraum aufweist. In dem Arbeitsraum ist ein beispielsweise als Flüssigkeit ausgebildetes Dämpfungsfluid zum Dämpfen der Relativbewegungen aufgenommen. Außerdem umfasst der Dämpfer einen in dem Arbeitsraum aufgenommen und relativ zu dem Gehäuse translatorisch bewegbaren Kolben, durch welchen der Arbeitsraum in zwei Arbeitskammern unterteilt ist. Des Weiteren umfasst der Dämpfer eine mit dem Kolben verbundene und mit dem Kolben relativ zu dem Gehäuse translatorisch mitbewegbare Kolbenstange.A further embodiment which is not part of the invention relates to a damper for damping relative movements between a hinge arm and a hinge housing of a hinge, in particular for a household appliance. The damper has a housing which has a working space. A damping fluid in the form of a liquid, for example, is accommodated in the working chamber for damping the relative movements. In addition, the damper includes a piston which is accommodated in the working space and can be moved translationally relative to the housing, by means of which the working space is divided into two working chambers. Furthermore, the damper comprises a piston rod which is connected to the piston and which can be moved translationally with the piston relative to the housing.

Um nun den Dämpfer besonders kostengünstig herstellen zu können, ist es bei dieser nicht erfindungsgemäßen Ausführungsform vorgesehen, dass der Kolben wenigstens eine von dem Dämpfungsfluid durchströmbare Durchströmöffnung aufweist, welcher ein separat von dem Kolben ausgebildetes und wenigstens eine Ausnehmung aufweisendes Ventilelement zugeordnet ist, mittels welchem die Durchströmöffnung des Kolbens in eine erste Richtung für das Dämpfungsfluid versperrbar und in eine der ersten Richtung entgegengesetzte zweite Richtung für das Dämpfungsfluid freigebbar ist. Dabei greift ein aus einem Kunststoff gebildetes Befestigungselement des Kolbens in die Ausnehmung des Ventilelements ein, wobei das Befestigungselement durch Schmelzen des Befestigungselements verformt ist. Dadurch hintergreift beziehungsweise umgreift das Befestigungselement wenigstens einen die Ausnehmung des Ventilelements zumindest teilweise begrenzenden Wandungsbereich, wodurch das Ventilelement, insbesondere formschlüssig, an dem Kolben gehalten ist. Vorzugsweise ist das Befestigungselement einstückig mit einem Grundkörper des Kolbens beziehungsweise dem Kolben insgesamt ausgebildet, sodass der Kolben vorzugsweise einstückig ausgebildet ist.In order to be able to produce the damper particularly cost-effectively, it is provided in this embodiment, which is not according to the invention, that the piston has at least one through-flow opening through which the damping fluid can flow, which is assigned a valve element which is formed separately from the piston and has at least one recess, by means of which the Flow-through opening of the piston can be blocked in a first direction for the damping fluid and can be released in a second direction opposite to the first direction for the damping fluid. A fastening element of the piston made of plastic engages in the recess of the valve element, the fastening element being deformed by melting of the fastening element. As a result, the fastening element engages behind or encompasses at least one wall region that at least partially delimits the recess of the valve element, as a result of which the valve element is held on the piston, in particular in a form-fitting manner. Preferably, the fastener is integral with a Base body of the piston or the piston formed as a whole, so that the piston is preferably formed in one piece.

Es kann ein Scharnier vorgesehen sein, insbesondere für ein Haushaltsgerät, wobei das Scharnier ein Scharniergehäuse und einen Scharnierarm aufweist, welcher verschwenkbar an dem Scharniergehäuse gehalten ist. Das Scharnier kann dabei einen Dämpfer gemäß Anspruch 1 und/oder einen Dämpfer gemäß der nicht erfindungsgemäßen Ausführungsform umfassen, sodass mittels des Dämpfers Relativbewegungen zwischen dem Scharnierarm und dem Scharniergehäuse zu dämpfen sind.A hinge can be provided, in particular for a household appliance, the hinge having a hinge housing and a hinge arm which is pivotably held on the hinge housing. The hinge can include a damper according to claim 1 and/or a damper according to the embodiment not according to the invention, so that relative movements between the hinge arm and the hinge housing are to be damped by means of the damper.

Es kann ein Haushaltsgerät vorgesehen sein, welches vorzugsweise als ein elektrisches oder elektronisches Haushaltsgerät ausgebildet ist. Dabei weist das Haushaltsgerät ein Scharnier wie oben beschrieben auf, sodass das Haushaltsgerät vorzugsweise wenigstens einen Dämpfer gemäß Anspruch 1 und/oder wenigstens einen Dämpfer gemäß der nicht erfindungsgemäßen Ausführungsform aufweist.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines bevorzugten Ausführungsbeispiels sowie anhand der Zeichnung. Die vorstehend in der Beschreibung genannten Merkmale und Merkmalskombinationen sowie die nachfolgend in der Figurenbeschreibung genannten und/oder in den Figuren alleine gezeigten Merkmale und Merkmalskombinationen sind nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar, ohne den in den Ansprüchen definierten Rahmen der Erfindung zu verlassen. Die Zeichnung zeigt in:

Fig. 1
eine schematische Perspektivansicht eines erfindungsgemäßen Dämpfers für ein Scharnier eines Haushaltsgerät;
Fig. 2
eine schematische Längsschnittansicht des Dämpfers;
Fig. 3
ausschnittsweise eine schematische Perspektivansicht einer Kolbenstangeneinrichtung des Dämpfers;
Fig. 4
ausschnittsweise eine weitere schematische Längsschnittansicht des Dämpfers;
Fig. 5
ausschnittsweise eine schematische Perspektivansicht einer Befestigungsanordnung eines Kolbens an der Kolbenstangeneinrichtung;
Fig. 6
eine schematische und perspektivische Unteransicht des Kolbens;
Fig. 7
eine weitere schematische und perspektivische Unteransicht des Kolbens;
Fig. 8
eine schematische und geschnittene Perspektivansicht des Kolbens; und
Fig. 9
eine weitere schematische und geschnittene Perspektivansicht des Kolbens.
A household appliance can be provided, which is preferably designed as an electrical or electronic household appliance. The household appliance has a hinge as described above, so that the household appliance preferably has at least one damper according to claim 1 and/or at least one damper according to the embodiment not according to the invention.
Further advantages, features and details of the invention result from the following description of a preferred exemplary embodiment and from the drawing. The features and combinations of features mentioned above in the description and the features and combinations of features mentioned below in the description of the figures and/or shown alone in the figures are not only in the combination specified in each case, but also in others Combinations or alone can be used without departing from the scope of the invention defined in the claims. The drawing shows in:
1
a schematic perspective view of a damper according to the invention for a hinge of a household appliance;
2
a schematic longitudinal sectional view of the damper;
3
a fragmentary schematic perspective view of a piston rod device of the damper;
4
a detail of a further schematic longitudinal sectional view of the damper;
figure 5
a detail of a schematic perspective view of a fastening arrangement of a piston on the piston rod device;
6
a schematic and perspective bottom view of the piston;
7
another schematic and perspective bottom view of the piston;
8
a schematic and sectional perspective view of the piston; and
9
another schematic and sectional perspective view of the piston.

In den Fig. sind gleiche oder funktionsgleiche Elemente mit gleichen Bezugszeichen versehenElements that are the same or have the same function are provided with the same reference symbols in the figures

Fig. 1 zeigt in einer schematischen Perspektivansicht einen Dämpfer 10 für ein Scharnier eines elektrischen Haushaltsgeräts. Dies bedeutet, dass das elektrische Haushaltsgerät in seinem vollständig hergestellten Zustand das Scharnier und dem Dämpfer 10 aufweist. Das Scharnier umfasst ein Scharniergehäuse und einen Schwenkarm, welcher verschwenkbar an dem Scharniergehäuse gehalten und dadurch beispielsweise um wenigstens oder genau eine Schwenkachse relativ zu dem Scharniergehäuse verschwenkbar ist. Außerdem umfasst das Haushaltsgerät beispielsweise ein Gerätegehäuse mit einer Öffnung. Die Öffnung ist beispielsweise eine Öffnung eines Garraums oder eines Aufnahmeraums, in welchem Lebensmittel oder Gegenstände angeordnet werden können. Außerdem umfasst das Haushaltsgerät eine Gerätetür, welche über das Scharnier verschwenkbar an dem Gerätegehäuse gehalten und somit zwischen einer Schließstellung und wenigstens einer Offenstellung relativ zu dem Gerätegehäuse verschwenkbar ist. In der Schließstellung überdeckt die Gerätetür die Öffnung zumindest teilweise, insbesondere zumindest überwiegend oder vollständig, wodurch die Öffnung in der Schließstellung mittels der Gerätetür verschlossen ist. In der Offenstellung gibt die Gerätetür die Öffnung zumindest teilweise frei. Dabei ist beispielsweise der Scharnierarm an die Gerätetür angebunden, während das Scharniergehäuse an dem Gerätegehäuse befestigt ist. Wird die Gerätetür relativ zu dem Gerätegehäuse bewegt, das heißt verschwenkt, so werden dadurch Relativbewegungen, insbesondere rotatorische Relativbewegungen, zwischen dem Scharnierarm und dem Scharniergehäuse bewirkt. Mittels des Dämpfers 10 können dabei Relativbewegungen, insbesondere rotatorische Relativbewegungen, zwischen dem Scharnierarm und dem Scharniergehäuse gedämpft werden, sodass beispielsweise eine unerwünscht schnelle Bewegung der Gerätetür in die Schließstellung und/oder in die Offenstellung mittels des Dämpfers 10 vermieden werden kann. 1 shows a damper 10 for a hinge of an electrical household appliance in a schematic perspective view. This means that the household electrical appliance has the hinge and the damper 10 in its fully manufactured state. The hinge comprises a hinge housing and a pivot arm, which is held pivotably on the hinge housing and is therefore pivotable, for example, about at least or exactly one pivot axis relative to the hinge housing. The household appliance also includes, for example, an appliance housing with an opening. The opening is, for example, an opening of a cooking space or a receiving space in which food or objects can be arranged. In addition, the domestic appliance includes an appliance door which is pivotably held on the appliance housing via the hinge and can therefore be pivoted between a closed position and at least one open position relative to the appliance housing. In the closed position, the appliance door covers the opening at least partially, in particular at least predominantly or completely, as a result of which the opening is closed by means of the appliance door in the closed position. In the open position, the appliance door at least partially releases the opening. In this case, for example, the hinge arm is connected to the appliance door, while the hinge housing is attached to the appliance housing. If the appliance door is moved relative to the appliance housing, that is to say pivoted, this causes relative movements, in particular rotational relative movements, between the hinge arm and the hinge housing. Relative movements, in particular rotational relative movements, between the hinge arm and the hinge housing can be damped by means of the damper 10, so that, for example, an undesirably rapid movement of the appliance door into the closed position and/or into the open position can be avoided by means of the damper 10.

Wie besonders gut in Zusammenschau mit Fig. 2 erkennbar ist, weist der Dämpfer 10 ein in Fig. 1 transparent dargestelltes Gehäuse 12 auf, welches einen Arbeitsraum 14 aufweist beziehungsweise begrenzt. Der Dämpfer 10 umfasst darüber hinaus einen besonders gut in Zusammenschau mit Fig. 4 erkennbaren Kolben 16, durch welchen der Arbeitsraum 14 in zwei Arbeitskammern 18 und 20 unterteilt ist. Außerdem umfasst der Dämpfer 10 eine mit dem Kolben 16 verbundene und dadurch mit dem Kolben 16 relativ zu dem Gehäuse 12 translatorisch mit bewegbare Kolbenstange 22. Der Dämpfer 10 weist darüber hinaus ein in dem Arbeitsraum 14 aufgenommenes Dämpfungsfluid auf, welches vorzugsweise als Flüssigkeit, das heißt als Hydraulikflüssigkeit, ausgebildet ist. somit ist der Dämpfer 10 beispielsweise als hydraulischer Dämpfer ausgebildet. Mittels des Dämpfungsfluids können die Relativbewegungen zwischen dem Scharniergehäuse und dem Scharnierarm gedämpft werden. Das Dämpfungsfluid ist beispielsweise ein Öl, insbesondere ein Silikonöl.How particularly good in combination with 2 can be seen, the damper 10 has an in 1 shown transparent housing 12, which has a working space 14 or limited. The damper 10 also includes a particularly good in combination with 4 recognizable piston 16, through which the working space 14 is divided into two working chambers 18 and 20. In addition, the damper 10 comprises a piston rod 22 which is connected to the piston 16 and can therefore be moved translationally with the piston 16 relative to the housing 12 as a hydraulic fluid. thus, the damper 10 is designed, for example, as a hydraulic damper. The relative movements between the hinge housing and the hinge arm can be damped by means of the damping fluid. The damping fluid is, for example, an oil, in particular a silicone oil.

Die Kolbenstange 22 und mit dieser der Kolben 16 sind entlang einer in Fig. 2 durch einen Doppelpfeil 24 veranschaulichten Bewegungsrichtung relativ zu dem Gehäuse 12 translatorisch bewegbar. Werden beispielsweise die Kolbenstange 22 und mit dieser der Kolben 16 in eine mit der Bewegungsrichtung zusammenfallende und in Fig. 2 durch einen Pfeil 26 veranschaulichte erste Richtung relativ zu dem Gehäuse 12 translatorisch bewegt, so wird dadurch eine Volumenverkleinerung der Arbeitskammer 20 und eine Volumenvergrößerung der Arbeitskammer 18 bewirkt, wobei die Arbeitskammern 18 und 20 entlang der Bewegungsrichtung einander gegenüberliegen. Mit anderen Worten ist der Kolben 16 entlang der Bewegungsrichtung zwischen den Arbeitskammern 18 und 20 angeordnet. Dabei ist in der Arbeitskammer 20 ein beispielsweise aus einem metallischen Werkstoff gebildetes Federelement 28 angeordnet, welches vorliegend als Spiralfeder ausgebildet ist. Werden die Kolbenstange 22 und somit der Kolben 16 in die erste Richtung relativ zu dem Gehäuse 12 translatorisch bewegt, so wird dadurch das Federelement 28 gespannt, insbesondere komprimiert. Hierzu ist beispielsweise das Federelement 28 entlang der Bewegungsrichtung einerseits zumindest mittelbar, insbesondere direkt, an einem Boden 30 des Gehäuses 12 abgestützt, wobei der Boden 30 beispielsweise die Arbeitskammer 20 in die erste Richtung zumindest teilweise, insbesondere zumindest überwiegend oder vollständig, begrenzt. Andererseits ist das Federelement 28 entlang der Bewegungsrichtung zumindest mittelbar, insbesondere direkt, an dem Kolben 16 abgestützt.The piston rod 22 and with it the piston 16 are along an in 2 direction of movement illustrated by a double arrow 24 relative to the housing 12 translationally movable. If, for example, the piston rod 22 and with it the piston 16 are moved in a direction that coincides with the direction of movement and in 2 If the first direction illustrated by an arrow 26 is moved translationally relative to the housing 12, this causes a reduction in volume of the working chamber 20 and an increase in volume of the working chamber 18, with the working chambers 18 and 20 lying opposite one another along the direction of movement. In other words, the piston 16 is arranged between the working chambers 18 and 20 along the direction of movement. In this case, a spring element 28 formed, for example, from a metallic material is arranged in the working chamber 20, which in the present case is designed as a spiral spring. If the piston rod 22 and thus the piston 16 are moved in a translatory manner in the first direction relative to the housing 12, the spring element 28 is thereby tensioned, in particular compressed. For this purpose, spring element 28, for example, is supported at least indirectly, in particular directly, along the direction of movement on a base 30 of housing 12, wherein base 30 at least partially, in particular at least predominantly or completely, delimits working chamber 20 in the first direction, for example. On the other hand, the spring element 28 is supported at least indirectly, in particular directly, on the piston 16 along the direction of movement.

Durch Spannen, insbesondere Komprimieren, des Federelements 28 stellt das Federelement 28 eine Federkraft bereit, welche beispielsweise in eine in Fig. 2 durch einen Pfeil 32 veranschaulichte, mit der Bewegungsrichtung zusammenfallende und der ersten Richtung entgegengesetzte zweite Richtung wirkt. Beispielsweise mittels der Federkraft können der Kolben 16 und somit die Kolbenstange 22 in die zweite Richtung relativ zu dem Gehäuse 12 translatorisch bewegt werden. Werden der Kolben 16 und somit die Kolbenstange 22 in die zweite Richtung relativ zu dem Gehäuse 12 translatorisch bewegt, so werden dadurch eine Volumenvergrößerung der Arbeitskammer 20 und eine Volumenverkleinerung der Arbeitskammer 18 bewirkt. Durch Bewegen der Kolbenstange 22 in die erste Richtung wird zumindest ein Teilbereich der Kolbenstange 22 in das Gehäuse 12 eingefahren, das heißt hinein bewegt. Durch Bewegen der Kolbenstange 22 in die zweite Richtung wird der Teilbereich aus dem Gehäuse 12 ausgefahren beziehungsweise heraus bewegt.By tensioning, in particular compressing, the spring element 28, the spring element 28 provides a spring force which, for example, can be translated into an in 2 illustrated by an arrow 32, coinciding with the direction of movement and the first direction opposite second direction acts. For example, by means of the spring force, the piston 16 and thus the piston rod 22 can be moved translationally in the second direction relative to the housing 12 . If the piston 16 and thus the piston rod 22 are moved in a translatory manner in the second direction relative to the housing 12 , this causes an increase in the volume of the working chamber 20 and a reduction in the volume of the working chamber 18 . By moving the piston rod 22 in the first direction, at least a partial area of the piston rod 22 is retracted into the housing 12, that is to say moved into it. By moving the piston rod 22 in the second direction, the partial area is extended or moved out of the housing 12 .

Der Dämpfer 10 umfasst darüber hinaus einen Kopf 34, welcher beispielsweise mit der Kolbenstange 22 translatorisch relativ zu dem Gehäuse 12 mit bewegbar ist. Der Kopf 34 ist beispielsweise separat von der Kolbenstange 22 ausgebildet und mit der Kolbenstange 22 verbunden. Der Dämpfer 10 ist beispielsweise über das Gehäuse 12 an einem ersten Bauteil des Scharniers zumindest mittelbar, insbesondere direkt, abstützbar oder abgestützt. Über den Kopf 34 beziehungsweise über die Kolbenstange 22 ist der Dämpfer 10 an einem zweiten Bauteil des Scharniers zumindest mittelbar, insbesondere direkt, abstützbar oder abgestützt. Durch die zuvor beschriebenen Relativbewegungen zwischen dem Scharnierarm und dem Scharniergehäuse kommt es beispielsweise zu Relativbewegungen zwischen den Bauteilen des Scharniers. Durch diese Relativbewegungen zwischen den Bauteilen des Scharniers werden die Kolbenstange 22 und der Kolben 16 relativ zu dem Gehäuse 12 translatorisch bewegt, wodurch die Relativbewegungen zwischen den Bauteilen und in der Folge die Relativbewegungen zwischen dem Scharnierarm und dem Scharniergehäuse mittels des Dämpfers 10 und dabei insbesondere mittels des Dämpfungsfluids gedämpft werden. Aus Fig. 2 ist erkennbar, dass der Dämpfer 10 auch einen in dem Arbeitsraum 14 angeordneten Käfig 37 und ein an beziehungsweise in dem Käfig 37 gehaltenen und somit in dem Arbeitsraum 14 angeordneten Kompensationsschaum 36 aufweist, welcher beispielsweise mittels des Käfig 37 in dem Arbeitsraum 14 gehalten ist. Das Gehäuse 12 an sich weist eine Öffnung auf, welche vorliegend mittels eines beispielsweise als Hülse ausgebildeten Verschlusses 38 zumindest verschlossen ist.The damper 10 also includes a head 34 which, for example, can be moved with the piston rod 22 in a translational manner relative to the housing 12 . The head 34 is, for example, formed separately from the piston rod 22 and is connected to the piston rod 22 . The damper 10 can be supported or is supported at least indirectly, in particular directly, for example via the housing 12 on a first component of the hinge. The damper 10 can be supported or is supported at least indirectly, in particular directly, via the head 34 or via the piston rod 22 on a second component of the hinge. The relative movements between the hinge arm and the hinge housing described above result, for example, in relative movements between the components of the hinge. Due to these relative movements between the components of the hinge, the piston rod 22 and the piston 16 are moved in a translatory manner relative to the housing 12, whereby the relative movements between the components and subsequently the relative movements between the hinge arm and the hinge housing are suppressed by means of the damper 10 and in particular by means of of the damping fluid are damped. Out of 2 it can be seen that the damper 10 also has a cage 37 arranged in the working space 14 and a compensation foam 36 held on or in the cage 37 and thus arranged in the working space 14, which is held in the working space 14 by means of the cage 37, for example. The housing 12 itself has an opening, which in the present case is at least closed by means of a closure 38 embodied, for example, as a sleeve.

Der Käfig 37, der Kompensationsschaum 36 und der Verschluss 38 weisen jeweilige Durchströmöffnungen auf, welche von der Kolbenstange 22 durchdrungen sind. Dadurch kann ein außerhalb des Gehäuses 12 angeordnetes erstes Ende E1 der Kolbenstange 22 außerhalb des Gehäuses 12 angeordnet sein, während ein dem ersten Ende E1 gegenüberliegendes zweites Ende E2 der Kolbenstange 22 in dem Arbeitsraum 14 und somit in dem Gehäuse 12 angeordnet ist, wobei die Kolbenstange 22 über ihr zweites Ende E2 mit dem Kolben 16 verbunden ist.The cage 37, the compensation foam 36 and the closure 38 each have flow openings through which the piston rod 22 passes. As a result, a first end E1 of the piston rod 22 located outside the housing 12 can be located outside the housing 12, while a second end E2 of the piston rod 22 located opposite the first end E1 is located in the working chamber 14 and thus in the housing 12, with the piston rod 22 is connected to the piston 16 via its second end E2.

Bei einer Volumenverkleinerung der Arbeitskammer 18 und bei einer damit einhergehenden Volumenvergrößerung der Arbeitskammer 20 strömt zumindest ein Teil des Dämpfungsfluids aus der Arbeitskammer 18 über in die Arbeitskammer 20. Umgekehrt strömt zumindest ein Teil des Dämpfungsfluids aus der Arbeitskammer 20 in die Arbeitskammer 18 über, wenn es zu einer Volumenverkleinerung der Arbeitskammer 20 und einer damit einhergehenden Volumenvergrößerung der Arbeitskammer 18 kommt. Beispielsweise dann, wenn zumindest ein Teil des Dämpfungsfluids aus der Arbeitskammer 20 in die Arbeitskammer 18 strömt, wird der Kompensationsschaum 36 mittels des Dämpfungsfluids komprimiert, um in der Arbeitskammer 18 das von der Arbeitskammer 20 in die Arbeitskammer 18 einströmende Dämpfungsfluid aufnehmen zu können.When the volume of working chamber 18 decreases and the volume of working chamber 20 increases as a result, at least part of the damping fluid flows out of working chamber 18 into working chamber 20. Conversely, at least part of the damping fluid flows out of working chamber 20 into the working chamber 18 when there is a reduction in the volume of the working chamber 20 and an associated increase in the volume of the working chamber 18 . For example, when at least part of the damping fluid flows from working chamber 20 into working chamber 18, the compensation foam 36 is compressed by means of the damping fluid in order to be able to absorb the damping fluid flowing from working chamber 20 into working chamber 18 in working chamber 18.

Um nun den Dämpfer 10 und somit das Scharnier sowie das Haushaltsgerät insgesamt besonders kostengünstig herstellen zu können, weist der Dämpfer 10 - wie besonders gut in Zusammenschau mit Fig. 3 erkennbar ist - einen einstückig mit der Kolbenstange 22 ausgebildeten Teller 40 auf, an welchem - wie besonders gut aus Fig. 4 erkennbar ist - der separat von dem Teller 40 und separat von der Kolbenstange 22 ausgebildete Kolben 16, insbesondere ausschließlich formschlüssig, befestigt ist. Die Kolbenstange 22 und der Teller 40 sind dabei aus einem metallischen Werkstoff gebildet. Aus Fig. 4 ist erkennbar, dass der Teller 40 zumindest überwiegend in dem Kolben 16 angeordnet und dadurch zumindest überwiegend von dem Kolben 16 umgeben ist. Der Teller 40 ist dabei durch ein Kaltpressverfahren an die Kolbenstange angeformt, wobei der Teller 40 vorzugsweise durch ein Stauchverfahren an die Kolbenstange 22 angestaucht ist.In order to be able to produce the damper 10 and thus the hinge and the household appliance as a whole in a particularly cost-effective manner, the damper 10 - how particularly good in combination with 3 can be seen - a one-piece design with the piston rod 22 plate 40 on which - how particularly good 4 is recognizable - the piston 16, which is designed separately from the plate 40 and separately from the piston rod 22, is fastened, in particular exclusively in a form-fitting manner. The piston rod 22 and the plate 40 are formed from a metallic material. Out of 4 it can be seen that the plate 40 is at least predominantly arranged in the piston 16 and is therefore at least predominantly surrounded by the piston 16 . The plate 40 is formed onto the piston rod by a cold pressing process, with the plate 40 preferably being upset on the piston rod 22 by an upsetting process.

Der Teller 40 weist Ausnehmungen 42 auf, welche in Umfangsrichtung des Tellers 40 und somit in Umfangsrichtung der Kolbenstange 22 voneinander beabstandet sind. Besonders gut in Zusammenschau mit Fig. 5 ist erkennbar, dass der vorzugsweise einstückig ausgebildete und aus einem Kunststoff hergestellte Kolben 16 mit den Ausnehmungen 42 korrespondierende Nasen 44 aufweist, welche in die korrespondierenden Ausnehmungen 42 des Tellers 40 eingreifen. Hierdurch greift der Kolben 16, insbesondere über die Nasen 44, in die Ausnehmungen 42 ein, wodurch der Kolben 16 formschlüssig mit dem Teller 40 zusammenwirkt und in Umfangsrichtung des Tellers 40 relativ zu dem Teller 40 formschlüssig positioniert ist. Dadurch kann der Kolben 16 auf besonders einfache, zeit- und kostengünstige Weise in einer gewünschten Position bezogen auf die Umlaufrichtung des Tellers 40 und relativ zu dem Teller 40 an dem Teller 40 befestigt werden, insbesondere derart, dass der Teller 40 in Längserstreckungsrichtung und somit in axialer Richtung der Kolbenstange 22 in den Kolben 16 eingesteckt wird, derart, dass die Nasen 44 in die Ausnehmung 42 eingesteckt werden und somit in den Ausnehmungen 42 zum Liegen kommen.The plate 40 has recesses 42 which are spaced apart from one another in the circumferential direction of the plate 40 and thus in the circumferential direction of the piston rod 22 . Especially good in combination with figure 5 It can be seen that the piston 16 , which is preferably designed in one piece and is made of a plastic, has lugs 44 which correspond to the recesses 42 and which engage in the corresponding recesses 42 of the plate 40 . This engages the piston 16, in particular via the lugs 44, in the recesses 42, whereby the piston 16 interacts positively with the plate 40 and is positively positioned in the circumferential direction of the plate 40 relative to the plate 40. As a result, the piston 16 can be fastened to the plate 40 in a particularly simple, time-saving and cost-effective manner in a desired position in relation to the direction of rotation of the plate 40 and relative to the plate 40, in particular in such a way that the plate 40 extends in the direction of longitudinal extension and thus in axial direction of the piston rod 22 in the piston 16 is inserted in such a way that the lugs 44 are inserted into the recess 42 and thus come to rest in the recesses 42 .

Dabei weist der Kolben 16 wenigstens einen umgeformten und dadurch einen Randbereich 46 des Tellers 40 hintergreifenden beziehungsweise umgreifenden Kragen 48 auf, mittels welchem der Kolben 16, insbesondere formschlüssig, an dem Teller 40 befestigt ist. Dies kann besonders gut aus Fig. 4 erkannt werden. Bei einem Verfahren zum Herstellen des Dämpfers 10 werden beispielsweise die Kolbenstange 22 und mit dieser der Teller 40 in axialer Richtung der Kolbenstange 22 derart relativ zu dem Kolben 16 bewegt, dass der Teller 40 in den Kolben 16 eingesteckt wird. Daraufhin wird ein in Fig. 4 ausschnittsweise erkennbarer Stempel 50 derart relativ zu dem Kolben 16 bewegt, dass der Stempel 50 zunächst in Stützanlage mit dem noch nicht umgeformten Kragen 48 kommt. Der Stempel 50 wird - wie in Fig. 4 durch einen Pfeil 52 veranschaulicht ist, dann weiter in Richtung des Tellers 40 bewegt, wodurch der Kragen 48 umgelegt, das heißt plastisch verformt und somit derart umgeformt wird, dass der Kragen 48 den Randbereich 46 umgreift beziehungsweise hintergreift und der Kolben 16 dadurch formschlüssig an dem Teller 40 befestigt wird.The piston 16 has at least one deformed collar 48 that engages behind or around an edge region 46 of the plate 40, by means of which the piston 16 is fastened to the plate 40, in particular in a form-fitting manner. This can look particularly good 4 be recognized. In a method for producing the damper 10, for example, the piston rod 22 and with it the plate 40 are moved in the axial direction of the piston rod 22 relative to the piston 16 in such a way that the plate 40 is inserted into the piston 16. An in 4 A portion of the stamp 50 that can be seen is moved relative to the piston 16 in such a way that the stamp 50 first comes into support contact with the collar 48 that has not yet been formed. The stamp 50 is - as in 4 illustrated by an arrow 52, is then moved further in the direction of the plate 40, as a result of which the collar 48 is folded over, i.e. plastically deformed and thus reshaped in such a way that the collar 48 encompasses or engages behind the edge region 46 and the piston 16 is thereby positively attached to the Plate 40 is attached.

Vorzugsweise ist beziehungsweise wird der Stempel 50 erwärmt beziehungsweise beheizt, wodurch mittels des Stempels 50 der Kragen 48, insbesondere bei dessen Umformung, erwärmt wird beziehungsweise werden kann. Hierdurch kann insbesondere dann, wenn der Kragen 48 wie der Kolben insgesamt aus dem zuvor genannten und beispielsweise als Thermoplast ausgebildeten Kunststoff gebildet ist, besonders zeit- und kostengünstig, insbesondere plastische, umgeformt werden.The stamp 50 is or is preferably heated or heated, as a result of which the collar 48 is or can be heated by means of the stamp 50, in particular during its reshaping. In this way, especially if the collar 48 is formed, like the piston, from the above-mentioned plastic, which is formed, for example, as a thermoplastic, it can be deformed particularly quickly and inexpensively, in particular plastically.

Besonders gut aus Fig. 4 ist auch erkennbar, dass sowohl der Kolben 16 als auch der Teller 40 jeweils wenigstens eine von dem Dämpfungsfluid durchströmbare Durchströmöffnung 54 beziehungsweise 56 aufweisen. Durch die zuvor beschriebene Positionierung des Kolbens 16 relativ zu dem Teller 40 insbesondere im Umfangsrichtung des Tellers 40 können die Durchströmöffnungen 54 und 56 insbesondere in Umfangsrichtung des Tellers 40 und somit in Umfangsrichtung des Kolbens 16 derart relativ zueinander positioniert beziehungsweise ausgerichtet werden, dass sich die Durchströmöffnungen 54 und 56 gegenseitig zumindest teilweise überlappen beziehungsweise überdecken. Dadurch kann sichergestellt werden, dass das Dämpfungsfluid sowohl durch die Durchströmöffnung 54 als auch durch die Durchströmöffnung 56 hindurchströmen kann, wenn die Kolbenstange 22 und der Teller 40 und somit der Kolben 16 relativ zu dem Gehäuse 12 entlang der Bewegungsrichtung translatorisch bewegt werden. In der Folge kann die Wahrscheinlichkeit von Fehlmontagen gering gehalten werden, und eine gewünschte Funktionsfähigkeit des Dämpfers 10 kann gewährleistet werden.Particularly good looking 4 It can also be seen that both the piston 16 and the plate 40 each have at least one throughflow opening 54 or 56 through which the damping fluid can flow. The previously described positioning of the piston 16 relative to the plate 40, in particular in the circumferential direction of the plate 40, allows the flow openings 54 and 56 to be positioned or aligned relative to one another, in particular in the circumferential direction of the plate 40 and thus in the circumferential direction of the piston 16, in such a way that the flow openings 54 and 56 overlap or cover each other at least partially. This can ensure that the damping fluid can flow through both the flow opening 54 and the flow opening 56 when the piston rod 22 and the plate 40 and thus the piston 16 are translated relative to the housing 12 along the direction of movement. As a result, the probability of incorrect assembly can be kept low, and a desired functionality of the damper 10 can be guaranteed.

Der Dämpfer 10 weist dabei ein separat von dem Kolben 16 und separat von dem Teller 40 und separat von der Kolbenstange 22 ausgebildetes und an dem Kolben 16 gehaltenes Ventilelement 58 auf, welches beispielsweise aus einem metallischen Werkstoff gebildet ist. Bei dem in Fig. 4 gezeigten Ausführungsbeispiel weist das Ventilelement 58 eine so genannte, einfach auch als Ventilklappe bezeichnete Rückstromventilklappe 60 auf. Aus Fig. 4 ist erkennbar, dass die Rückstromventilklappe 60 mit einem Grundkörper 62 des Ventilelements 58 verbunden ist, wobei die Rückstromventilklappe 60 einstückig mit dem Grundkörper 62 ausgebildet sein kann. Das Ventilelement 58 ist dabei derart elastisch verformbar, dass die Rückstromventilklappe 60 und somit das Ventilelement 58 zwischen einer in Fig. 8 erkennbaren Schließstellung S und wenigstens einer in Fig. 9 erkennbaren Offenstellung O relativ zu dem Kolben 16 zumindest teilweise bewegbar ist. Dabei ist das Ventilelement 58 der Durchströmöffnung 54 des Kolbens 16 zugeordnet, sodass mittels des Ventilelements 58, insbesondere mittels der Rückstromventilklappe 60, die Durchströmöffnung 54 in eine in Fig. 8 durch einen Pfeil 64 veranschaulichte erste Strömungsrichtung für das Dämpfungsfluid versperrbar und in eine der ersten Strömungsrichtung entgegengesetzte und in Fig. 9 durch einen Pfeil 66 veranschaulichte zweite Strömungsrichtung für das Dämpfungsfluid freigebbar ist. Dabei veranschaulicht in Fig. 8 ein Pfeil 66 eine Strömung des Dämpfungsfluids aus der Arbeitskammer 20 in die Arbeitskammer 18. In Fig. 9 veranschaulichen Pfeile 68 eine Strömung des Dämpfungsfluids aus der Arbeitskammer 18 in die Arbeitskammer 20.The damper 10 has a valve element 58 which is formed separately from the piston 16 and separately from the plate 40 and separately from the piston rod 22 and is held on the piston 16 and is formed from a metallic material, for example. At the in 4 The exemplary embodiment shown has the valve element 58 on what is known as a backflow valve flap 60 , also referred to simply as a valve flap. Out of 4 it can be seen that the return flow valve flap 60 is connected to a base body 62 of the valve element 58 , it being possible for the return flow valve flap 60 to be formed in one piece with the base body 62 . The valve element 58 is elastically deformable in such a way that the return flow valve flap 60 and thus the valve element 58 between an in 8 recognizable closed position S and at least one in 9 recognizable open position O relative to the piston 16 is at least partially movable. The valve element 58 is assigned to the through-flow opening 54 of the piston 16, so that the through-flow opening 54 can be diverted into an in 8 First flow direction for the damping fluid, illustrated by an arrow 64, can be blocked and in a direction opposite to the first flow direction and in 9 second flow direction for the damping fluid, illustrated by an arrow 66, can be released. Illustrated in 8 an arrow 66 a flow of the damping fluid from the working chamber 20 into the working chamber 18. In 9 Arrows 68 illustrate a flow of the damping fluid from the working chamber 18 into the working chamber 20.

Um nun das Ventilelement 58 auf besonders kostengünstige Weise an dem Kolben 16 befestigen und somit den Dämpfer 10 auf besonders kostengünstige Weise herstellen zu können, weist - wie besonders gut aus Fig. 7 erkennbar ist - das Ventilelement 58 Ausnehmungen 70 auf. Die jeweilige Ausnehmung 70 ist beispielsweise als eine Durchgangsöffnung ausgebildet. Außerdem weist der Kolben 16 insbesondere die Ausnehmung 70 wenigstens oder genau ein Befestigungselement 72 auf, welche insbesondere dadurch, dass der Kolben 16 einstückig ausgebildet und aus einem Kunststoff gebildet ist, aus dem Kunststoff gebildet ist, aus welchem der Kolben 16 hergestellt ist. Dabei ist das Ventilelement 58 mittels der jeweiligen Ausnehmung 70 und mittels des jeweiligen Befestigungselements 72 an dem Kolben 16 formschlüssig gehalten, derart, dass das jeweilige Befestigungselement 72 in die jeweilige, korrespondierende Ausnehmung 70 eingreift. Hierzu ist das jeweilige Befestigungselement 72 durch Schmelzen des jeweiligen Befestigungselements 72 verformt, wodurch das Befestigungselement 72 wenigstens einen die jeweilige Ausnehmung 70 des Ventilelements 58 zumindest teilweise begrenzenden Wandungsbereich 74 des Ventilelements 58 hintergreift. Dadurch ist das Ventilelement 58 formschlüssig an dem Kolben 16 gehalten und somit beispielsweise mit dem Kolben mit bewegbar.In order to be able to fasten the valve element 58 to the piston 16 in a particularly cost-effective manner and thus to be able to produce the damper 10 in a particularly cost-effective manner, shows how particularly well 7 can be seen - the valve element 58 recesses 70 on. The respective recess 70 is, for example, as a Through hole formed. In addition, the piston 16 has in particular the recess 70 at least or exactly one fastening element 72, which is formed in particular by the fact that the piston 16 is formed in one piece and is made of a plastic from the plastic from which the piston 16 is made. The valve element 58 is held in a form-fitting manner on the piston 16 by means of the respective recess 70 and by means of the respective fastening element 72 in such a way that the respective fastening element 72 engages in the respective, corresponding recess 70 . For this purpose, the respective fastening element 72 is deformed by melting the respective fastening element 72, as a result of which the fastening element 72 engages behind at least one wall region 74 of the valve element 58 that at least partially delimits the respective recess 70 of the valve element 58. As a result, the valve element 58 is held in a form-fitting manner on the piston 16 and can therefore be moved with the piston, for example.

Besonders gut aus Fig. 7 erkennbar ist auch die Rückstromventilklappe 60, welche durch elastisches Verformen des Ventilelements 58 relativ zu dem Grundkörper 62 und relativ zu dem Kolben 16 zwischen der Schließstellung S und der Offenstellung O bewegbar, insbesondere verschwenkbar, ist. Aus Fig. 4 ist erkennbar, dass das jeweilige Befestigungselement 72 durch das Schmelzen als ein so genannter Pilzkopf ausgebildet ist, welcher den Wandungsbereich 74 umgreift beziehungsweise hintergreift.Particularly good looking 7 The return flow valve flap 60 can also be seen, which can be moved, in particular pivoted, by elastic deformation of the valve element 58 relative to the base body 62 and relative to the piston 16 between the closed position S and the open position O. Out of 4 it can be seen that the respective fastening element 72 is formed as a so-called mushroom head by melting, which surrounds or engages behind the wall region 74 .

Die Funktion und somit eine gewünschte Dämpfungswirkung des Dämpfers 10 können besonders gut aus Fig. 6, 4, 8 und 9 erkannt werden. Werden die Kolbenstange 22 und somit der Teller 40 und der Kolben 16 in die erste Richtung relativ zu dem Gehäuse 12 translatorisch bewegt, so wird das Ventilelement 58 mittels des Dämpfungsfluids in die Schließstellung S bewegt beziehungsweise in der Schließstellung S gehalten. Wie in Fig. 8 durch den Pfeil 66 veranschaulicht ist, kann dann das Dämpfungsfluid aus der Arbeitskammer 20 nicht durch die Durchströmöffnung 54 hindurchströmen, sondern das Dämpfungsfluid strömt durch gegenüber der Durchströmöffnung 54 wesentlich schmalere Kanäle 76, welche sich in einem Randbereich des Kolbens 16 befinden. Die Kanäle 76 münden in einen schmalen Kanal 78, welcher in eine, sich an die Durchströmöffnung 54 anschließenden Durchströmkanal 80 des Kolbens 16 mündet.The function and thus a desired damping effect of the damper 10 can be particularly good 6 , 4 , 8th and 9 be recognized. If the piston rod 22 and thus the plate 40 and the piston 16 are moved translationally in the first direction relative to the housing 12, the valve element 58 is moved into the closed position S or held in the closed position S by means of the damping fluid. As in 8 illustrated by arrow 66, the damping fluid from working chamber 20 cannot flow through flow opening 54, but rather the damping fluid flows through channels 76, which are much narrower than flow opening 54 and are located in an edge region of piston 16. The ducts 76 open into a narrow duct 78 which opens into a through-flow duct 80 of the piston 16 adjoining the through-flow opening 54 .

Über den Kanal 78 beziehungsweise von dem Kanal 78 kann das Dämpfungsfluid unter Umgehung der Durchströmöffnung 54 in den Kanal 80 einströmen und den Kanal 80 durchströmen. Daran anschließend kann das Dämpfungsfluid durch die Durchströmöffnung 56 des Tellers 40 strömen, wodurch das Dämpfungsfluid aus der Arbeitskammer 20 über die Kanäle 76 und 78 und über den Durchströmkanal 80 und über die Durchströmöffnung 56 in die Arbeitskammer 18 strömen kann. Hierdurch stellt beispielsweise der Dämpfer 10 eine erste Dämpfungskraft oder eine erste Dämpfungsleistung bereit.The damping fluid can flow into the channel 80 and flow through the channel 80 via the channel 78 or from the channel 78 , bypassing the flow opening 54 . The damping fluid can then flow through the through-flow opening 56 of the plate 40, as a result of which the damping fluid can flow out of the working chamber 20 via the channels 76 and 78 and through the through-flow channel 80 and through the through-flow opening 56 into the working chamber 18. In this way, for example, the damper 10 provides a first damping force or a first damping performance.

Werden hingegen die Kolbenstange 22 und mit dieser der Teller 40 und der Kolben 16 und somit das Ventilelement 58 in die zweite Richtung relativ zu dem Gehäuse 12 translatorisch bewegt, so wird das Ventilelement 58 mittels des Dämpfungsfluids in die Offenstellung O bewegt. Hierdurch gibt das Ventilelement 58 die Durchströmöffnung 54 frei, sodass das Dämpfungsfluid aus der Arbeitskammer 18 durch die Durchströmöffnung 54 hindurch und somit in die Arbeitskammer 20 strömen kann. Hierdurch stellt der Dämpfer 10 beispielsweise eine zweite Dämpfungskraft oder eine zweite Dämpfungsleistung bereit, welche geringer als die erste Dämpfungskraft beziehungsweise als die erste Dämpfungsleistung ist.If, on the other hand, the piston rod 22 and with it the plate 40 and the piston 16 and thus the valve element 58 are moved translationally in the second direction relative to the housing 12, the valve element 58 is moved into the open position O by means of the damping fluid. As a result, the valve element 58 releases the through-flow opening 54 so that the damping fluid can flow out of the working chamber 18 through the through-flow opening 54 and thus into the working chamber 20 . As a result, the damper 10 provides, for example, a second damping force or a second damping capacity, which is lower than the first damping force or the first damping capacity.

Wie aus Fig. 9 anhand der Pfeile 68 erkennbar ist, strömt das Dämpfungsfluid auf seinem Weg von der Arbeitskammer 18 in die Arbeitskammer 20 im Vergleich zu den Kanälen 76 und 78 zumindest überwiegend durch die Durchströmöffnung 54, wobei jedoch auch ein Teil des Dämpfungsfluids durch die Kanäle 76 und 78 strömt und somit über die Kanäle 76 und 78 in die Arbeitskammer 20 strömt. Hierdurch kann eine besonders vorteilhafte Dämpfungswirkung realisiert werden. Insbesondere kann die zweite Dämpfungskraft beziehungsweise die zweite Dämpfungsleistung zumindest nahezu null sein.How out 9 As can be seen from the arrows 68, the damping fluid flows on its way from the working chamber 18 into the working chamber 20 in comparison to the channels 76 and 78 at least predominantly through the through-flow opening 54, although part of the damping fluid also flows through the channels 76 and 78 and thus flows into the working chamber 20 via the channels 76 and 78 . A particularly advantageous damping effect can be realized in this way. In particular, the second damping force or the second damping power can be at least almost zero.

BEZUGSZEICHENLISTE:REFERENCE LIST:

1010
Dämpfermute
1212
GehäuseHousing
1414
Arbeitsraumworking space
1616
KolbenPistons
1818
Arbeitskammernworking chambers
2020
Arbeitskammernworking chambers
2222
Kolbenstangepiston rod
2424
Doppelpfeildouble arrow
2626
PfeilArrow
2828
Federelementspring element
3030
BodenFloor
3232
PfeilArrow
3434
KopfHead
3636
Kompensationsschaumcompensation foam
3737
KäfigCage
3838
Verschlussclosure
4040
TellerPlate
4242
Ausnehmungrecess
4444
Nasennoses
4646
Randbereichedge area
4848
Kragencollar
5050
StempelRubber stamp
5252
PfeilArrow
5454
Durchströmöffnungflow opening
5656
Durchströmöffnungflow opening
5858
Ventilelementvalve element
6060
Rückstromventilklappebackflow valve flap
6262
Grundkörperbody
6464
PfeilArrow
6666
PfeilArrow
6868
PfeilArrow
7070
Ausnehmungrecess
7272
Befestigungselementfastener
7474
Wandungsbereichwall area
7676
Kanalchannel
7878
Kanalchannel
8080
Durchströmkanalflow channel
E1E1
EndeEnd
E2E2
EndeEnd

Claims (9)

  1. A damper (10) for damping relative movements between a hinge arm and a hinge housing of a hinge, with a housing (12), which comprises a working space (14), with a piston (16) received in the working space (14) and translationally movable in relation to the housing (12), by which piston the working space (14) is divided into two working chambers (18, 20), with a piston rod (22) connected to the piston (16) and translationally movable together with the piston (16) in relation to the housing (12), and with a disk (40) formed integrally with the piston rod (22), to which disk the piston (16) formed separately from the disk (40) is fixed,
    characterized in that
    the piston (16) and the disk (40) each comprise at least one passage opening (54, 56) capable of being passed by a damping fluid received in the working chamber (14), wherein a valve element (58) formed separately from the piston (16) and separately from the disk (40) and retained on the piston (16) is associated with the passage opening (54) of the piston (16), by means of which valve element the passage opening (54) of the piston (16) can be blocked for the damping fluid in a first direction (64) and can be unblocked for the damping fluid in a second direction (66) opposite to the first direction (64).
  2. The damper (10) according to claim 1,
    characterized in that
    the disk (40) is at least predominantly arranged in the piston (16).
  3. The damper (10) according to claim 1 or 2,
    characterized in that
    the disk (40) is molded onto the piston rod (22) by a cold pressing method.
  4. The damper (10) according to claim 1 or 2,
    characterized in that
    the disk (40) is swaged onto the piston rod (22) by a swaging method.
  5. The damper (10) according to any one of the preceding claims,
    characterized in that
    the disk (40) is a first component and the piston (16) is a second component of the damper (10), wherein one of the components comprises at least one recess (42), with which the other component engages, whereby the components are positioned in relation to each other.
  6. The damper (10) according to any one of the preceding claims,
    characterized in that
    the piston (16) comprises at least one collar (48) reshaped and thereby engaging behind an edge area (46) of the disk (40), by means of which collar the piston (16) is fixed to the disk (40).
  7. The damper (10) according to any one of the preceding claims,
    characterized in that
    the piston (16) is formed of a plastic, in particular of a thermoplastic.
  8. The damper (10) according to any one of the preceding claims,
    characterized in that
    the valve element (58) comprises at least one recess (70), with which a fixing element (72) of the piston engages, wherein the valve element (58) is retained on the piston (16) by means of the recess (70) of the valve element (58) and by means of the fixing element (72) of the piston (16) engaging with the recess (70).
  9. The damper (10) according to claim 8,
    characterized in that
    the fixing element (72) is formed of a plastic and is deformed by melting and thereby engages behind at least one wall area (74) of the valve element (58) at least partially delimiting the recess (72) of the valve element (58), whereby the valve element (58) is retained on the piston (16).
EP18425099.1A 2018-12-13 2018-12-13 Damper, in particular for a hinge, hinge, in particular for a domestic appliance, and domestic appliance Active EP3667007B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP18425099.1A EP3667007B1 (en) 2018-12-13 2018-12-13 Damper, in particular for a hinge, hinge, in particular for a domestic appliance, and domestic appliance
SI201830999T SI3667007T1 (en) 2018-12-13 2018-12-13 Damper, in particular for a hinge, hinge, in particular for a domestic appliance, and domestic appliance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18425099.1A EP3667007B1 (en) 2018-12-13 2018-12-13 Damper, in particular for a hinge, hinge, in particular for a domestic appliance, and domestic appliance

Publications (2)

Publication Number Publication Date
EP3667007A1 EP3667007A1 (en) 2020-06-17
EP3667007B1 true EP3667007B1 (en) 2023-08-02

Family

ID=65275912

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18425099.1A Active EP3667007B1 (en) 2018-12-13 2018-12-13 Damper, in particular for a hinge, hinge, in particular for a domestic appliance, and domestic appliance

Country Status (2)

Country Link
EP (1) EP3667007B1 (en)
SI (1) SI3667007T1 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201381732Y (en) * 2009-04-10 2010-01-13 伍志勇 Domestic damper
US10145162B2 (en) * 2016-03-02 2018-12-04 King Slide Works Co., Ltd. Damping device and furniture hinge comprising the same

Also Published As

Publication number Publication date
EP3667007A1 (en) 2020-06-17
SI3667007T1 (en) 2023-12-29

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