US3467982A - Hydraulically damped actuator for self-closing doors - Google Patents

Hydraulically damped actuator for self-closing doors Download PDF

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Publication number
US3467982A
US3467982A US622134A US3467982DA US3467982A US 3467982 A US3467982 A US 3467982A US 622134 A US622134 A US 622134A US 3467982D A US3467982D A US 3467982DA US 3467982 A US3467982 A US 3467982A
Authority
US
United States
Prior art keywords
shaft
closing
actuator
housing
self
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US622134A
Other languages
English (en)
Inventor
Gunter Pracht
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.)
C EISEN GROSSMANN und STAHLWERK AG
Original Assignee
C EISEN GROSSMANN und STAHLWERK AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by C EISEN GROSSMANN und STAHLWERK AG filed Critical C EISEN GROSSMANN und STAHLWERK AG
Application granted granted Critical
Publication of US3467982A publication Critical patent/US3467982A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E05F3/06—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes in which a torsion spring rotates a member around an axis perpendicular to the axis of the piston
    • 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
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13—Type of wing
    • E05Y2900/132—Doors

Definitions

  • This invention provides a hydraulically damped actuator for self-closing doors.
  • the actuator includes a bearing means supporting' a rotatable shaft which projects from a housing.
  • a spring encircles the end of the shaft inside the housing to effect the closing of a door.
  • a damper means is located inside the said housing and includes a reciprocally movable piston located in a cylinder which is disposed perpendicularly to the shaft axis.
  • One end of the connecting rod is attached to the piston while the other end of the connecting rod has a large open circular end slidably mounted over an eccentric member.
  • a bearing means is provided to mount the eccentric member independently of the shaft.
  • a door-closing arm is coupled to the eccentric member for effectively utilizing the actuator.
  • the present invention consists in mounting the eccentric independently of the shaft and in directly coupling the same to the door-closing arm, the door-closing spring embracing the end of the shaft inside the actuator housing directly below the shaft bearing.
  • the proposed separation of the eccentric from the shaft permits the eccentric to be located highed up in the housing, thereby fundamentally altering the disposition of the components in the available space in favor of a more compact form of construction of the actuator housing.
  • the proposed removal of the eccentric into a higher position makes the free projecting end of the shaft inside the housing available for exclusive cooperation with the doorclosing spring, and consequently the height of the housing can be reduced.
  • the direct connection of the door-closing spring to the shaft eliminates the necessity of providing an entraining and pretensioning bush and of coupling the latter to the door-closing arm.
  • the proposed arrangement thus structurally substantially simplifies the self-closing door actuator.
  • the proposed arrangement permits the door-closing spring to be readily exchanged through the open bottom of the actuator housing without requiring the door-closing arm to be first detached from the shaft as was hitherto necessary.
  • the closing arm and the eccentric are coupled by a hub formed on the eccentric and adapted on its end projecting from the housing to receive the fitting head of the closing arm in a push-on fit, whereas the coupling connection between the door-closing arm and the rotatable shaft is established by a push-in coupling member which nonrotatably engages the end of the shaft which projects from the housing as well as the fitting head of the doorclosing arm.
  • FIG. 1 is a longitudinal section through a self-closing door actuator according to the invention
  • FIG. 2 is a section taken on the line II-II of FIG. 1;
  • FIG. 3 is a view of the eccentric and its hub
  • FIG. 4 is a section taken on line IV-IV of FIG. 1, and
  • FIG. 5 is a sectional bottom view of the actuator as shown in FIG. 1.
  • 1 is the actuator housing
  • 2 is the door-closing shaft which works in the actuator housing 1 in a journal bearing 3 formed by a steel bush
  • 4 is the door-closing arm
  • 5 is the closing spring
  • 6 is a preferably steel cylinder liner firmly fitted into the actuator housing 1 and together with a piston 7 forming the damping device.
  • the outer end of the cylinder liner 6 is sealed by a screw plug 8.
  • 9 is a cylinder core which axially traverses the piston 7 and which is secured therein by threads engaging the piston interior.
  • the projecting threaded end of the core 9 carries a counternut 10 which is tightened against the end face of the piston 7.
  • the eccentric 11 is an eccentric mounted on the journal bearing 3 and slidably supported by an intermediate platform (not numbered) inside the actuator housing.
  • the eccentric 11 cooperates with a connecting rod 12 of which the big end embraces the eccentric, whereas the other end works on a gudgeon pin 13 mounted on the periphery of the projecting end of the core 9 of the piston 7.
  • the eccentric 11 is formed with a collar or hub 14 which projects from the actuator housing 1 to the outside.
  • the hub 14 has an internal shoulder which bears on the end of the journal bearing 3, whereas the end of the hub projecting from the housing 1 embraces the shaft 2. Externally, the projecting end of the hub 14 has a square cross section embraced by the correspondingly shaped fitting head 15 of the doorclosing arm 4.
  • the shaft 2 which is encircled by a split ring 16 resting on the end of the hub 14 of the eccentric 11 is provided with a reduced section square end which passes through the fitting head 15 of the closing arm 4.
  • 17 is -a coupling member which fits over the reduced square end of the shaft 2 for common rotation therewith and which also engages and fits into the interior of the fitting head 15 of the closing arm 4, thereby rigidly coupling together the closing arm 4 and the shaft 2 and hence the eccentric 11.
  • the coupling member 17 is located on the reduced end of the shaft 2 by a split ring 18.
  • 19 is an assembly opening in the actuator housing 1 closable by a screw cover 20.
  • the bottom end of the shaft 2 projecting from the journal bearing 3 is formed with a circular enlargement 21 which is encircled by the closing spring 5 located in a spring housing 22.
  • the spring 5 may be mounted in the actuator housing 1 in any manner known in the prior art.
  • the inner claw end 25 of the spring 5 engages an axial slot 26 in the enlargement 21 of the shaft 2.
  • the outer spring end 23 engages a recess 24 located in the actuator housing l-in a manner well known in the prior art. In conventional manner the actuator housing 1 is enclosed by a cow] not shown in the drawing.
  • a hydraulically damped actuator for self-closing doors comprising, in combination,
  • a damper means including a reciprocally movable piston located in a cylinder which is disposed perpendicularly to the shaft axis,

Landscapes

  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
  • Hydraulic Turbines (AREA)
US622134A 1966-09-21 1967-03-10 Hydraulically damped actuator for self-closing doors Expired - Lifetime US3467982A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG0047953 1966-09-21

Publications (1)

Publication Number Publication Date
US3467982A true US3467982A (en) 1969-09-23

Family

ID=7128511

Family Applications (1)

Application Number Title Priority Date Filing Date
US622134A Expired - Lifetime US3467982A (en) 1966-09-21 1967-03-10 Hydraulically damped actuator for self-closing doors

Country Status (6)

Country Link
US (1) US3467982A (es)
DE (1) DE1584099B1 (es)
ES (1) ES340313A1 (es)
FI (1) FI41809B (es)
NL (1) NL6704750A (es)
NO (1) NO124325B (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4550470A (en) * 1983-06-01 1985-11-05 Nifco Inc. Combined rotary damper device including a stored energy mechanism and braking mechanism

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3210797A (en) * 1962-08-06 1965-10-12 Yale & Towne Inc Door closer

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1140105B (de) * 1959-10-16 1962-11-22 Doerken & Mankel K G Schliesser fuer die Fluegel von Tueren
US3188683A (en) * 1961-08-30 1965-06-15 Yale & Towne Inc Spiral spring door closer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3210797A (en) * 1962-08-06 1965-10-12 Yale & Towne Inc Door closer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4550470A (en) * 1983-06-01 1985-11-05 Nifco Inc. Combined rotary damper device including a stored energy mechanism and braking mechanism

Also Published As

Publication number Publication date
NO124325B (es) 1972-04-04
DE1584099B1 (de) 1970-05-21
FI41809B (es) 1969-10-31
NL6704750A (es) 1968-03-22
ES340313A1 (es) 1968-06-01

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