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
  • E05F5/00—Braking devices, e.g. checks; Stops; Buffers
  • E05F5/02—Braking devices, e.g. checks; Stops; Buffers specially for preventing the slamming of swinging wings during final closing movement, e.g. jamb stops
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
  • E05F5/00—Braking devices, e.g. checks; Stops; Buffers
  • E05F5/06—Buffers or stops limiting opening of swinging wings, e.g. floor or wall stops
  • E05F5/10—Buffers or stops limiting opening of swinging wings, e.g. floor or wall stops with piston brakes
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
  • E05Y2201/00—Constructional elements; Accessories therefor
  • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
  • E05Y2201/21—Brakes
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
  • E05Y2201/00—Constructional elements; Accessories therefor
  • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
  • E05Y2201/252—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 ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
  • E05Y2201/00—Constructional elements; Accessories therefor
  • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
  • E05Y2201/262—Type of motion, e.g. braking
  • E05Y2201/264—Type of motion, e.g. braking linear
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
  • E05Y2900/00—Application of doors, windows, wings or fittings thereof
  • E05Y2900/20—Application of doors, windows, wings or fittings thereof for furniture, e.g. cabinets

Definitions

• the present invention relates to a damper, in particular for fittings for furniture or household appliances, with a housing in which a piston connected to a piston rod is linearly displaceable in an interior space, with at least one flow channel being formed on or in the piston, which is flowed through when the piston is displaced, a volume compensation element arranged in the housing being provided which compensates for a volume which is displaced or released by inserting or pulling out a part of the piston rod into or out of the housing, slidably mounted in the housing is.
• EP 2 006 480 B1 discloses a damper in which a piston connected to a piston rod is slidably arranged in a cylindrical housing. The damping forces are generated by the flow resistance when the piston is displaced within the housing and a fluid flows through a flow channel on the piston.
• a displaceable volume compensation element is provided for compensation, which has an annular seal which is mounted on a retaining ring which is biased by a spring into the housing ,
• This structure of the damper is disadvantageous especially in the area of the volume compensation element, since the assembly and manufacture of the individual components is complex.
• a volume compensation element is seen before, which is slidably mounted in the housing by sliding or pulling out part of the piston in the housing or out of the housing, the volume compensation element being held on a cover of the damper that holds the housing closes at one end and forms a passage for the piston rod.
• This allows the volume menu compensation element can be mounted together with the cover, for example by pushing it into the housing.
• the volume compensation element is preferably formed integrally with the cover.
• a one-piece design leads to a reduction in the number of components, it being possible for at least one web to be arranged between the volume compensation element and the cover, which allows the volume compensation element to move in the axial direction of the housing, while the cover remains rigidly fixed to the housing.
• Such webs can be formed in a spiral, for example, to move the volume compensation element displaceably by a bending or torsion movement.
• the volume compensation element can optionally also be rotated during the sliding movement, in particular if the webs are arranged in a spiral.
• volume compensation element On the volume compensation element is preferably an annular you telement provided, which rests on an inside of the housing and / or on the piston rod.
• the annular sealing element can either be fixed as a special component on the volume compensation element, or it can also be formed integrally with the volume compensation element.
• the volume compensation element can be designed, for example, as an injection molded part, so that an elastic sealing element can be produced by using suitable thin-walled flexible plastics.
• a sleeve can be provided on the cover, which surrounds the piston rod.
• the sleeve can protrude axially from the Chen Chen disk-shaped cover, preferably outwardly away from the housing.
• the sleeve can also protrude inwards into the housing, especially if the damper is to be used in tight spaces.
• FIGS 1 A and 1 B two views of the damper according to the invention with the piston rod extended;
• FIGS 2A and 2B two views of the damper of Figure 1 with a retracted piston rod
• Figure 3 is an exploded perspective view of the damper of Figure 1.
• a damper 1 comprises a housing 2 and a piston rod 5 protruding from the housing 2.
• the housing 2 has a cylindrical section 4 in an interior 20, on which a piston 10 is displaceably guided.
• an expansion 11 or taper may optionally be provided to change the damping forces at different areas of the housing 2.
• an expansion 11 is provided adjacent to the base 3, so that the piston 10 in the region adjacent to the base 3 can be moved more smoothly than on the cylindrical section 4 on the other side of the expansion 1 1 it is also possible to dispense with such an expansion 1 1 and to form the cylindrical section 4 essentially continuously with the same inner diameter.
• the piston 10 is held on the piston rod 5, which can be connected at one end 6 outside the housing 2 to an actuating part.
• the end 6 is designed as a ball head and can also have other mechanical connec tion means.
• An opposite end 7 is arranged in the housing 2 and can be inserted in an end position in a receptacle 8 on the bottom 3.
• On the bottom 3 is also formed from the housing 2 outwardly projecting sleeve 9, which is used to attach the housing 2 to a component, such as a fitting for furniture or household.
• the housing 2 is closed on the side opposite the bottom 3 by an annular cover 13, which is held stationary on the housing 2 and can optionally also be glued or welded to it.
• a bushing for the piston rod 5 is formed on the cover 13, a sleeve 12 projecting outward from the essentially disk-shaped cover 13 for guiding the piston rod 5.
• a volume compensation element 14 is also held on the cover 13 and is displaceable in the housing 2. As FIGS. 1B and 2B show, by pushing the piston rod 5 into the housing 2, the fluid can flow through the piston 10 to generate the damping forces, the pushing in of the piston rod 5 partially displacing the fluid volume, which is compensated for by a displacement of the volume compensation element 14 becomes.
• the Volume compensation element 14 is held on the cover 13 via struts or webs 15, the webs 15 being bendable.
• a seal 19 is also arranged or integrally formed, which ensures a seal between the volume compensation element 14 and an inner wall of the housing 2.
• the seal 19 can also provide a seal with respect to the piston rod 5.
• the damper 1 according to the invention is shown in an exploded view.
• the piston 10 On the piston rod 5, the piston 10 is held non-displaceably in the axial direction, wherein the piston rod 5 can be designed stepped for this.
• the piston can also be formed in one piece with the piston rod.
• One or more flow channels 16 are formed on the piston 10 and can be closed at the ends by an annular throttle element 17.
• the throttle element 17 can be formed from an elastic ring which has a passage opening 18 for the piston rod 5. This allows the throttle element 17 to stand out when the piston rod 5 is pulled out of the flow channels 16, so that the rod 5 is pulled out smoothly. In the opposite direction when pushing the piston rod 5, however, the throttle element 17 is pressed onto the flow channels 16 and thus ensures a flow resistance that generates the damping forces.
• the volume compensation element 14 is connected to the cover 13 via webs 15, which are arranged in a spiral. Instead of two webs 15, only one web or more than two webs 15 can be provided.
• the volume compensation element 14 can optionally be formed in one piece with the webs 15 and the cover 13, for example as an injection molded part.
• the seal 19 can also be produced by integrally formed sealing lips, wherein the seal can optionally also be designed as a separate component. LIST OF REFERENCE NUMBERS

Landscapes

• Fluid-Damping Devices (AREA)

Priority Applications (6)

Applications Claiming Priority (2)

Publications (1)

Family

ID=66826952

Family Applications (1)

Country Status (8)

Families Citing this family (2)

Citations (6)

Family Cites Families (14)

• 2018
  • 2018-06-26 DE DE202018103637.8U patent/DE202018103637U1/de active Active
• 2019
  • 2019-06-04 WO PCT/EP2019/064488 patent/WO2020001936A1/de not_active Ceased
  • 2019-06-04 CN CN201980042112.4A patent/CN112513397B/zh active Active
  • 2019-06-04 EP EP19730121.1A patent/EP3814595B1/de active Active
  • 2019-06-04 US US16/973,942 patent/US11866986B2/en active Active
  • 2019-06-04 JP JP2020571645A patent/JP7325456B2/ja active Active
  • 2019-06-04 PL PL19730121.1T patent/PL3814595T3/pl unknown
  • 2019-06-04 SI SI201930418T patent/SI3814595T1/sl unknown

Patent Citations (6)

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