US3668737A - Automatic door closer - Google Patents

Automatic door closer Download PDF

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Publication number
US3668737A
US3668737A US874599A US3668737DA US3668737A US 3668737 A US3668737 A US 3668737A US 874599 A US874599 A US 874599A US 3668737D A US3668737D A US 3668737DA US 3668737 A US3668737 A US 3668737A
Authority
US
United States
Prior art keywords
carriage
cam
housing
closer
automatic door
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
US874599A
Other languages
English (en)
Inventor
Horst Tillmann
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.)
Doerken and Mankel KG
Original Assignee
Doerken and Mankel KG
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 Doerken and Mankel KG filed Critical Doerken and Mankel KG
Application granted granted Critical
Publication of US3668737A publication Critical patent/US3668737A/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
    • E05F3/10—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
    • E05F3/104—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 cam-and-slide transmission between driving shaft and piston within the closer housing
    • 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
    • E05Y2201/10—Covers; Housings
    • E05Y2201/11—Covers
    • 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
    • E05Y2600/00—Mounting or coupling arrangements for elements provided for in this subclass
    • E05Y2600/40—Mounting location; Visibility of the elements
    • E05Y2600/41—Concealed
    • 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
    • E05Y2600/00—Mounting or coupling arrangements for elements provided for in this subclass
    • E05Y2600/40—Mounting location; Visibility of the elements
    • E05Y2600/452—Mounting location; Visibility of the elements in or on the floor or wall
    • 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
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/10—Additional functions
    • E05Y2800/12—Sealing
    • 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
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/26—Form or shape
    • E05Y2800/28—Form or shape tubular, annular
    • 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

  • ABSTRACT An automatic door in which a closer shaft is connected at one end thereof to a door for turning movement therewith and carries in a housing in which-the closer shaft is turnably mounted a cam fixed to the closer shaft.
  • a pair of followers carried by a carriage are arranged to opposite sides of the shaft and cooperate with the cam to move the carriage in a first direction during turning of the shaft and cam to either side of a rest position in which the door is closed, and spring means cooperate with the' carriage to be stressed to an increasing degree during movement of said carriage in this first direction, while damping means cooperate with the carriage to dampen the movement of said carriage in a direction opposite to said first direction.
  • the present invention relates to an automatic door closer having a closer shaft projecting from a housing and adapted to be at the projecting portion connected to a door so as to be moved with the latter from a rest position in which the door is closed to turned positions to opposite sides of the rest position in which the door is opened.
  • a cam is fixedly connected in the interior of the housing to the closer shaft for turning movement therewith and this cam engages a pair of followers carried by a longitudinally movable carriage to which a spring arrangement acting as energy storage as well as the movable member of damping means are connected.
  • the automatic door closer mainly comprises a housing, a closer shaft turnably mounted in said housing and having an end portion projecting beyond said housing and adapted to be connected to a door for turning movement therewith between a rest position in which the door is closed and turned positions in which the door is opened, a cam fixed in the housing to the shaft for turning movement therewith between the aforementioned rest and turned positions, carriage means arranged in the housing for reciprocating movement in a direction substantially normal to the shaft, and a pair of followers carried by the carriage for cooperation with the cam, the followers are respectively arranged on opposite sides of the shaft and substantially in a plane extending in the direction of movement of the carriage, one of said followers cooperating with the cam for moving the carriage in a first direction during turning of the cam to either side from the rest position.
  • the closer includes further spring means in the housing operatively connected to the carriage and biased to press the driving follower against the cam and at least the driving follower is in the form of a roller.
  • the spring means are stressed to an increasing degree during movement of the carriage in the first direction, and damping means are connected to the carriage for damping the movement of the latter in a direction opposite to the first direction under the influence of the stressed spring means.
  • the cam has two mirror symmetrical halves forming at one end of the cam in indentation, in which in the rest position of the cam, the one follower is located while engaging the cam in two symmetrically opposite zones.
  • Such a construction of the cam will positively determine the rest position of the latter as well as the rest position of the closer shaft of the door connected thereto, whereby the form of the indentation can be chosen in such a manner that the rest position will be reached and maintained with the necessary closing moments.
  • the outline of each cam half outside the indentation preferably follows substantially the shape of an involute.
  • FIG. 1 is a longitudinal cross section through a door closer, according to the present invention, the cross section being taken along the line 1-1 of FIG. 2;
  • FIG. 2 is a horizontal cross section of the door closer in which the cross section is taken along the line II-II of FIG. 1.
  • the door closer shown in the drawing mainly comprises an elongated substantially prismatic housing 10 formed at one of the ends thereof with a cylinder bore 11 in which a damping piston 12 is reciprocably arranged.
  • the damping piston is provided with the usual oneway valves and adjusting means for adjusting the degree of damping obtainable, and the valves and adjusting means are of standard construction well known in the art, and therefore, for simplification reason, not shown in the drawing.
  • the cylinder bore 11 is at the outer end closed by a plug.
  • a compression coil spring 13 abuts with one end on the inner face of the damping piston 12, whereas the opposite end of the spring 13 abuts against an abutment formed in the interior of the housing.
  • the closer shaft 18 is turnably mounted at its lower end in a bearing 19 mounted in the bottom of the housing 10, whereas an upper portion of the shaft is sealed in a cup-shaped cover 20 removably fixed in a corresponding opening of the top wall of the housing, by being for instance threadingly connected thereto, and this upper portion of the shaft is turnably mounted in a bearing 21 lodged in the cup-shaped cover.
  • the closer shaft 18 projects with a portion in form of a trunnion 22 beyond the housing and the trunnion 22 serves for coupling a door directly or indirectly to the closer shaft.
  • the connecting member 14 is connected at one end thereof to the damping piston 12 by means of a pin 23, whereas the other end of the member 14 is connected by a pair of pins 24 to laterally displaced portions of the carriage 15.
  • the pins 24 are accessible from the outside after removal'of the cover 22 to facilitate assembly of the elements.
  • the carriage 15 comprises a pair of vertically-spaced substantially parallel plates connected by a pair of pins 25 and 26 which respectively form shafts on which the follower rollers 27, respectively 28, are turnably arranged.
  • the axes of the pins 25 and 26 which carry the rollers 27 and 28 in the space between the plates forming the carriage 15, are located in the longitudinal plane of symmetry of the carriage l and to opposite sides of the closer shaft 18.
  • a cam 29 is located between the follower rollers 27 and 28 and engages the outer surfaces of the same. This cam, which is arranged between the plates of the carriage 15, is fixedly connected to the closer shaft 18 for turning therewith.
  • the cam 29 has in plan view two mirror symmetrical halves forming at one end of the cam an indentation 30 which has a radius of curvature smaller than that of the roller 28 lodged therein, so that in the rest position of the cam, shown in the drawing, in which the door con nected to the closer shaft 18 is in the closed position, the cam engages the roller 28 in two with respect of the longitudinal plane of symmetry of the carriage oppositely located zones. In this way, the rest position of the cam 29 will be positively determined.
  • the outline of each cam half, outside the indentation 30, follows substantially the shape of an involute.
  • the door is turnable through an angle of 180, while the automatic door closer of the present invention will assure properretum of the door to the closed position'
  • the compressed spring 13 drives through the piston 12, the connecting member 14, the carriage 15, the roller 28 and the cam 19, the closer shaft 18 and the door connected thereto in the direction for closing the door after the latter is released in a turned open position. If an outer force for instance the push of a hand, or air pressure, should act in closing direction on the door, a sudden closing of the same will still be prevented, since in such a case, the cam 29 will abut with a side face thereof on the roller follower 27, which therefore constitutes a check follower preventing sudden closing of the door.
  • An automatic door closer comprising, in combination, a housing; a closer shaft turnably mounted in said housing and having an end portion projecting beyond said housing and adapted to be connected to a door for turning movement therewith between a rest position in which the door is closed and turned positions in which the door is opened; a cam fixed in said housing to said shaft for turning movement therewith between said rest and said turned positions, said cam having two mirror-symmetrical halves forming at one end of said cam an indentation; an elongated carriage arranged in said housing for reciprocating movement substantially in direction of its elongation; only two followers carried by said carriage for cooperation with said cam, said two followers being respectively arranged on opposite sides of said shaft and substantially in a plane extending in the direction of movement of said carriage, one of said followers cooperating with said cam for moving said carriage in a first direction during turning of said cam to either side from said rest position; spring means in said housing operatively connected to said carriage and being biased to press said one follower against said cam, at least said one follower being a roller having an axi
  • An automatic door closer as defined in claim 4, wherein said carriage comprises a pair of substantially parallel plates connected by a pair of pins to each other, said pins respectively forming shafts on which said follower rollers aremounted between said plates.
  • each of said plates is formed with an elongated slot having a pair of substantially parallel spaced-side faces, said closer shaft extending through the slots in said plates for guiding said carriage for reciprocating movement.
  • damping means comprises a cylinder bore in said housing and a piston reciprocable in said cylinder bore, said spring means comprising a compression spring engaging at opposite ends thereof said piston and a portion of said housing between said piston and said carriage.
  • An automatic door closer as defined in claim 7, and including a connecting member connected at one end thereof to said piston and connected at the other end to a pair of laterally spaced portions of said carriage.

Landscapes

  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
US874599A 1968-11-07 1969-11-06 Automatic door closer Expired - Lifetime US3668737A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681807399 DE1807399A1 (de) 1968-11-07 1968-11-07 Selbsttaetiger Tuerschliesser

Publications (1)

Publication Number Publication Date
US3668737A true US3668737A (en) 1972-06-13

Family

ID=5712555

Family Applications (1)

Application Number Title Priority Date Filing Date
US874599A Expired - Lifetime US3668737A (en) 1968-11-07 1969-11-06 Automatic door closer

Country Status (4)

Country Link
US (1) US3668737A (enrdf_load_stackoverflow)
DE (1) DE1807399A1 (enrdf_load_stackoverflow)
FR (1) FR2022737A1 (enrdf_load_stackoverflow)
GB (1) GB1259030A (enrdf_load_stackoverflow)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6336294B1 (en) 1999-02-04 2002-01-08 The Stanley Works Automatic door assembly and door operator therefor
US6481160B1 (en) 1999-02-04 2002-11-19 The Stanley Works Axial door operator
US20040034964A1 (en) * 2002-08-20 2004-02-26 Jorg Loggen Drive for a movable element
US6840592B2 (en) * 2003-01-16 2005-01-11 Leo A. Kalieta Drinking glass display and storage cabinet
US20110219584A1 (en) * 2010-03-10 2011-09-15 Guangdong Kin Long Hardware Products Co., Ltd. Floor spring and assembly method thereof
US20120117755A1 (en) * 2009-07-24 2012-05-17 Dorma Gmbh + Co. Kg Door Closer
US8225458B1 (en) 2001-07-13 2012-07-24 Hoffberg Steven M Intelligent door restraint
CN101501289B (zh) * 2006-08-14 2012-11-14 多玛两合有限公司 闭门器
CN103827430A (zh) * 2011-09-27 2014-05-28 多玛两合有限公司 门致动装置以及用于制造用于门致动装置的盖的方法
US20150128379A1 (en) * 2013-11-13 2015-05-14 Dorma Deutschland Gmbh Overhead door closer
US20160177610A1 (en) * 2014-12-17 2016-06-23 Dorma Deutschland Gmbh Door operator
US9903146B2 (en) * 2014-02-13 2018-02-27 Hettich-Oni Gmbh & Co. Kg Bearing arrangement for a door

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2161293A1 (de) * 1971-12-10 1973-06-14 Dorma Baubeschlag Selbsttaetiger tuerschliesser
DE2218498C3 (de) * 1972-04-17 1986-05-07 Dorma-Baubeschlag Gmbh & Co Kg, 5828 Ennepetal Selbsttätiger Bodentürschließer
US4064589A (en) * 1976-03-18 1977-12-27 Builders Brass Works Door closer
DE4038720C2 (de) * 1990-12-05 1995-05-18 Dorma Gmbh & Co Kg Obertürschließer mit Gleitschienengestänge
US6260236B1 (en) 1998-10-30 2001-07-17 Jackson Corp. Door closer with hydraulic back checking

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1666903A (en) * 1926-06-30 1928-04-24 Shelby Spring Hinge Company Double-acting hinge and check
US2838939A (en) * 1954-06-15 1958-06-17 Schlegel Kurt Adjusting stroke mechanism
US3137888A (en) * 1962-01-11 1964-06-23 Bommer Spring Hinge Co Inc Concealed overhead door closer
US3474485A (en) * 1966-09-24 1969-10-28 Zavody Umelecke Kovovyroby Np Automatic universal door closer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1666903A (en) * 1926-06-30 1928-04-24 Shelby Spring Hinge Company Double-acting hinge and check
US2838939A (en) * 1954-06-15 1958-06-17 Schlegel Kurt Adjusting stroke mechanism
US3137888A (en) * 1962-01-11 1964-06-23 Bommer Spring Hinge Co Inc Concealed overhead door closer
US3474485A (en) * 1966-09-24 1969-10-28 Zavody Umelecke Kovovyroby Np Automatic universal door closer

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6336294B1 (en) 1999-02-04 2002-01-08 The Stanley Works Automatic door assembly and door operator therefor
US6481160B1 (en) 1999-02-04 2002-11-19 The Stanley Works Axial door operator
US6530178B1 (en) 1999-02-04 2003-03-11 The Stanley Works Automatic door assembly and door operator therefor
US6786006B2 (en) 1999-02-04 2004-09-07 The Stanley Works Automatic door assembly and door operator therefor
US9045927B1 (en) 2001-07-13 2015-06-02 Steven M. Hoffberg Intelligent door restraint
US9121217B1 (en) 2001-07-13 2015-09-01 Steven M. Hoffberg Intelligent door restraint
US11187022B1 (en) 2001-07-13 2021-11-30 Steven M. Hoffberg Intelligent door restraint
US9995076B1 (en) 2001-07-13 2018-06-12 Steven M. Hoffberg Intelligent door restraint
US8225458B1 (en) 2001-07-13 2012-07-24 Hoffberg Steven M Intelligent door restraint
US20040034964A1 (en) * 2002-08-20 2004-02-26 Jorg Loggen Drive for a movable element
US6840592B2 (en) * 2003-01-16 2005-01-11 Leo A. Kalieta Drinking glass display and storage cabinet
CN101501289B (zh) * 2006-08-14 2012-11-14 多玛两合有限公司 闭门器
US20120117755A1 (en) * 2009-07-24 2012-05-17 Dorma Gmbh + Co. Kg Door Closer
US8499415B2 (en) * 2010-03-10 2013-08-06 Guangdong Kin Long Hardware Products Co., Ltd. Floor spring and assembly method thereof
US20110219584A1 (en) * 2010-03-10 2011-09-15 Guangdong Kin Long Hardware Products Co., Ltd. Floor spring and assembly method thereof
CN103827430A (zh) * 2011-09-27 2014-05-28 多玛两合有限公司 门致动装置以及用于制造用于门致动装置的盖的方法
US20150128379A1 (en) * 2013-11-13 2015-05-14 Dorma Deutschland Gmbh Overhead door closer
US9903146B2 (en) * 2014-02-13 2018-02-27 Hettich-Oni Gmbh & Co. Kg Bearing arrangement for a door
US20160177610A1 (en) * 2014-12-17 2016-06-23 Dorma Deutschland Gmbh Door operator
US9790723B2 (en) * 2014-12-17 2017-10-17 Dorma Deutschland Gmbh Door operator

Also Published As

Publication number Publication date
DE1807399A1 (de) 1970-05-27
FR2022737A1 (enrdf_load_stackoverflow) 1970-08-07
GB1259030A (enrdf_load_stackoverflow) 1972-01-05

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