EP3029252A1 - Ferme-porte monté dans le sol - Google Patents

Ferme-porte monté dans le sol Download PDF

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Publication number
EP3029252A1
EP3029252A1 EP14196668.9A EP14196668A EP3029252A1 EP 3029252 A1 EP3029252 A1 EP 3029252A1 EP 14196668 A EP14196668 A EP 14196668A EP 3029252 A1 EP3029252 A1 EP 3029252A1
Authority
EP
European Patent Office
Prior art keywords
piston
spindle
housing
spring
fluid chamber
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.)
Withdrawn
Application number
EP14196668.9A
Other languages
German (de)
English (en)
Inventor
Jackson Leong
Kwan Mengsang
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.)
Dormakaba Deutschland GmbH
Original Assignee
Dorma Deutschland GmbH
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 Dorma Deutschland GmbH filed Critical Dorma Deutschland GmbH
Priority to EP14196668.9A priority Critical patent/EP3029252A1/fr
Priority to CN201510779366.8A priority patent/CN105672799A/zh
Publication of EP3029252A1 publication Critical patent/EP3029252A1/fr
Withdrawn legal-status Critical Current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
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/20—Combinations of elements
    • E05Y2800/22—Combinations of elements of not identical elements of the same category, e.g. combinations of not identical springs

Definitions

  • the present invention regards a floor spring.
  • Such floor springs are provided in the floor and function as a door hinge. The door can then be operated by the floor spring directly at the hinge such that no further door operator needs to be mounted on the door itself.
  • FIG. 1 A floor spring commonly known from the prior art is shown in figure 1 .
  • the floor spring 100 has a piston 101 which is guided in a housing 103.
  • Two connecting lugs 104 are connected to the piston 101 such that a movement of the connecting lugs 104 is transferred to piston 101 along the housing 103.
  • the floor spring 100 comprises a closer spring 102, which is sandwiched between the piston 101 and the housing 103 around the connecting lugs 104. Therefore, the piston 101 is always subjected to the spring force that changes with the position of the piston 101 that is in turn followed the movement of the connecting lugs 104.
  • the floor spring 100 has a spindle 107 which is provided within the housing 103 in perpendicular to the closer spring 102 and the piston 101.
  • the spindle 107 has a spindle head 108 protruding outside the housing 103 and functioning as a connecting interface between the floor spring and the door wing. This allows coupling of a door rotation with the spindle 107 via the spindle head 108.
  • the spindle 107 comprises a cam surface 106.
  • the two connecting lugs 104 are connected via two rollers 105 rolling on the cam surface 106 of the spindle 107.
  • both rollers will be in contact with the cam surface 106. Only one roller will be in contact with the cam surface 106 when the spindle 107 is rotating away from the null position.
  • the 3 rd roller 105 (close to the spring 102) acts as a safety counter roller.
  • the objective of the invention is to provide a floor spring which is easy to assemble, cheap to manufacture and save in operations.
  • a floor spring comprising a housing, a first piston, a second piston, and a spindle.
  • the spindle extends through an opening of the housing. Further, the spindle is connected to the first piston and the second piston such that a transformation of a longitudinal movement of the first piston and/or second piston into a rotational movement of the spindle is allowed.
  • the first piston and the second piston are formed integrally as a hybrid piston, such that both, the first piston and the second piston, are parts of the hybrid piston.
  • the first piston and the second piston are assembled within the housing along the same axis.
  • the first piston and the second piston are provided along a longitudinal axis of the housing.
  • the longitudinal axis intersects with an axis of the spindle.
  • the spindle comprises a cam surface to establish a cam drive.
  • the spindle is connected to the hybrid piston via said cam drive. Hence, a transformation of the rotation of the spindle into a longitudinal movement of the hybrid piston is provided.
  • the first piston has to be pressed against the cam surface of the spindle at all time.
  • This assurance is provided by a closer spring sandwiched between an inner wall of the housing and the first piston.
  • This design also allows the compression of the closer spring as soon as the spindle is rotated (in the direction of the opening of the door wing) that translates into the linear movement of the first piston.
  • this act of compressing of the closer spring presses the first piston via a main roller against the cam surface of the spindle, such that the spindle can be rotated (in the direction of the closing of the door wing) under the force of the loaded closer spring.
  • the closer spring is first loaded by manual opening of a door that is connected to the spindle and after which, the closer spring forces the closing of the door by pressing the first piston onto the cam surface of the spindle via the main roller that translates into a turning moment on the spindle.
  • the first piston particularly comprises a main roller that rolls on the cam surface of the spindle.
  • the second piston comprises the second roller (smaller) that always maintains a very small clearance with the cam surface of the spindle.
  • This second roller on the second piston is known as counter roller.
  • the second piston may comprise a rolling bolt. The rolling bolt requires less installation space compared with the second counter roller.
  • the second piston preferably separates a first fluid chamber from a second fluid chamber within the housing.
  • the housing comprises a fluid passage connecting the first fluid chamber and the second fluid chamber.
  • a damping system is installed.
  • the second piston damps the rotation by the spindle.
  • the damping is achieved by the fluid passage, which allows a regulated flow of fluid from the first fluid chamber to the second fluid chamber. Therefore, the speed of the movement of the second piston is strongly determined by the fluid flowing from the first fluid chamber to the second fluid chamber.
  • the fluid passage comprises a valve for setting said flow. In case the above mentioned damping system is provided, any rotation of the spindle is damped.
  • the second piston preferably comprises a check valve allowing flow of the fluid from the second fluid chamber to the first fluid chamber. Therefore, the door can be opened without damping force, such that the damping system is only active when closing the door.
  • the second piston preferably comprises a pressure relief system.
  • the pressure relief system is a spring valve. The pressure relief system allows flow of the fluid from the first fluid chamber to the second fluid chamber when a predetermined pressure within the first fluid chamber is exceeded.
  • the hybrid piston comprises at least one sealing on the outer surface.
  • the sealing seals the hybrid piston against an inner wall of the housing.
  • such a sealing is provided in case the housing is made of a less rigid material as plastic.
  • the sealing preferably allows an enhanced separation of the first fluid chamber and second fluid chamber.
  • the second piston comprises a seal ring and/or the first piston comprises a wear ring.
  • the seal ring of the second piston preferably is a combination of a rubber o-ring and polyurethane seal. Therefore, a tight sealing is established.
  • a diameter of the spindle and a length of the housing are set at an approximate ratio of 1:8. Additionally or alternatively, the diameter of the spindle and a width of the housing are set at an approximate ratio of 1:3. Yet additionally or alternatively, the diameter of the spindle and a height of the housing are set at an approximate ratio of 1:2.
  • the floor spring can supply the same amount of torque provided on the spindle as in the prior art, e.g. for rotating a door. This means that the same door weights as in the prior art can be moved with the inventive floor spring according to the preferred embodiment, while the dimensions of the floor spring are reduced.
  • FIG. 2 is a schematic overview of the floor spring 1 according to a first embodiment of the invention.
  • the floor spring 1 comprises a housing 2, which is formed to have an at least partly cylindrical inner surface. Therefore, an inner wall 11 of the housing 2 is at least partly formed cylindrically.
  • a first piston 3 and a second piston 4 are guided.
  • the first piston 3 is a closing piston while the second piston 4 is a damping piston.
  • the first piston 3 and the second piston 4 are formed integrally to build a hybrid piston 9.
  • the first piston 3 and the second piston 4 are single areas of the hybrid piston 9.
  • the hybrid piston 9 as well as the first piston 3 and the second piston 4 are provided along the longitudinal axis 10 of the housing 2.
  • the closer spring 8 preferably is a coil spring. In the same way as the hybrid piston 9, the closer spring 8 is orientated along the longitudinal axis 10 of the housing 2.
  • the closer spring 8 can be compressed by the movement of the hybrid piston 9.
  • the hybrid piston 9 moves to compress the closer spring 8 when a door connected to the floor spring 1 is opened. Thereafter, the energy stored in the closer spring 8 can be used to move the hybrid piston such that the door can be moved back to a closed state.
  • the hybrid piston 9 mounted within the housing 2 via an opening of the housing which is closed by an end cap 12.
  • the opening also allows mounting of the closer spring 8 within the housing 2.
  • the end cap 12 has a thread which is screwed into the housing 2.
  • the floor spring 1 In order to connect a door to the floor spring 1, the floor spring 1 comprises a spindle 5 extending through the housing 2.
  • the spindle 5 has a spindle head 20 on an area outside the housing 2 such that a door can be connected to that spindle head 20. Since the floor spring 1 is to be provided in a floor of a room, the cam 20 is supposed to function as a lower hinge of the door. In this way, the door can be directly operated without any door operators visible on the door.
  • the spindle 5 further has a cam surface 6 which is employed to set up a cam drive between the spindle 5 and the hybrid piston.
  • the cam surface 6 is placed between the first piston 3 and the second piston 4. Tight contact of the cam surface 6 and the first piston 3 via the roller 17 is assured under the force of the closer spring 8. Therefore, the hybrid piston 9 can be moved by rotating the spindle 5 and thus the cam surface 6. Accordingly, the cam surface 6 and thus the spindle 5 can be rotated by moving the hybrid piston 9 due to the energy stored by the closer spring 8.
  • the second piston 4 functions to damp the movement of the spindle 5. Therefore, the second piston 4 separates a first fluid chamber 14 from a second fluid chamber 15.
  • the first fluid chamber 14 is provided between the hybrid piston 9 and the end cap 12.
  • a not shown fluid passage within the housing 2 connects the first fluid chamber 14 and the second fluid chamber 15.
  • the fluid passage has a regulatory valve to set the flow through the fluid passage.
  • the second piston 4 further has a one-way valve 22 (cf. figure 3 ) allowing a fluid provided within the second fluid chamber 15 to flow into the first fluid chamber 14.
  • the second piston 4 moves such that the first fluid chamber 14 is enlarged and the second fluid chamber 15 is reduced. This means that fluid flows from the second fluid chamber 15 to the first fluid chamber 14 via the fluid passage of the housing 2 and/or the one-way valve 22 of the second piston 4. In particular, no damping force is generated.
  • the hybrid piston 9 and thus the second piston 4 are moved by the cam surface 6 such that the first fluid chamber 14 is reduced and the second fluid chamber 15 is enlarged.
  • first piston 3 has a main roller 17 rolling on the cam surface 6.
  • the second piston has a second roller 18, the counter roller that under normal operation maintains a small clearance between the counter roller 18 and the cam surface 6. Details of the connection between first piston 3, second piston 4 and cam surface 6 are shown in figure 3 . Due to the main roller 17, the friction generated of the cam surface 6 sliding on the first piston 3 is reduced. Therefore, the floor spring 1 allows opening the door without increased force.
  • Figure 4 is a schematic view of a part of the floor spring 1 according to a second embodiment of the invention.
  • the second piston 4 does not comprise a second roller 18 but a rolling bolt 19.
  • the rolling bolt 19 requires less space within the second piston 4 such that the overall dimensions of the hybrid piston 9 und thus the floor spring 1 can be reduced. Therefore, the second embodiment allows a compact design with a reduced number of components of the floor spring 1.
  • figure 5 is a schematic view of a part of the floor spring 1 according to a third embodiment of the invention.
  • Figure 5 shows the hybrid piston 9 having provision for additional sealing system.
  • Such a sealing system is preferably installed in case the housing 3 is made of less rigid material as plastics.
  • the first piston 3 comprises a wear ring 13.
  • the second piston 4 comprises a seal ring 21.
  • the seal ring 21 is preferably a combination of a rubber o-ring and polyurethane seal. The seal ring 21 assures that the second piston 4 strictly separates the first fluid chamber 14 from the second fluid chamber 15 such that no flow of fluid between the inner wall 11 of the housing 2 and the hybrid piston 9, in particular the second piston 4, is possible.
  • the floor spring 1 can comprise a pressure relief system 16.
  • the second piston 4 comprises the pressure relief system 16.
  • the pressure relief system 16 preferably is a spring valve allowing flow of the fluid from the first fluid chamber 14 to the second fluid chamber 15 when a predetermined fluid pressure within the first fluid chamber 14 is exceeded. Since the second piston 4 does not comprise the second counter roller 18
  • the pressure relief system 16 might also be provided with the floor spring 1 according to the second embodiment.
  • the overall number of parts is very small compared with the prior art floor spring 100 shown in figure 1 . Therefore, the manufacturing costs and assembly time can be reduced. Additionally, the overall dimensions of the floor spring 1 are reduced compared with the prior art floor spring 100. In particular, the dimension of the cam surface 6 provided on the spindle 5 is reduced. In particular, a diameter of the spindle 5 and a length of the housing 2 are set at an approximate ratio of 1:8. Further, the diameter of the spindle 5 and a width of the housing 2 are set at an approximate ratio of 1:3. Finally, the diameter of the spindle 5 and a height of the housing 2 are set at an approximate ratio of 1:2. Therefore, the floor spring 1 has a very compact design such that less mounting space for the floor spring 1 is required. Nevertheless, the same door weights as in the prior art can be handled by the floor spring 1.

Landscapes

  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
EP14196668.9A 2014-12-05 2014-12-05 Ferme-porte monté dans le sol Withdrawn EP3029252A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP14196668.9A EP3029252A1 (fr) 2014-12-05 2014-12-05 Ferme-porte monté dans le sol
CN201510779366.8A CN105672799A (zh) 2014-12-05 2015-11-13 地弹簧

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14196668.9A EP3029252A1 (fr) 2014-12-05 2014-12-05 Ferme-porte monté dans le sol

Publications (1)

Publication Number Publication Date
EP3029252A1 true EP3029252A1 (fr) 2016-06-08

Family

ID=52011072

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14196668.9A Withdrawn EP3029252A1 (fr) 2014-12-05 2014-12-05 Ferme-porte monté dans le sol

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EP (1) EP3029252A1 (fr)
CN (1) CN105672799A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106978951B (zh) * 2016-09-19 2019-05-10 上海品贵国际贸易有限公司 具有减速或控速功能的机轴自动归位装置
CN106761106A (zh) * 2016-12-27 2017-05-31 佛山市奥达金属制品有限公司 可配置分头式凸轮装置
EP3401485B1 (fr) * 2017-05-12 2020-07-01 dormakaba Deutschland GmbH Actionneur de porte

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5901412A (en) * 1996-01-30 1999-05-11 Dorma Gmbh + Co. Kg Top-mounted door closer
EP2138662A2 (fr) * 2008-06-27 2009-12-30 Taiwan Fu Hsing Industrial Co. Ltd. Ferme-porte automatique

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT251019Y1 (it) * 2000-03-13 2003-11-04 Fev Italia Archal S R L Chiudiporta aereo provvisto di mezzi perfezionati di rotazione.
CN101135219B (zh) * 2006-09-01 2012-11-14 多玛两合有限公司 闭门器
KR101061898B1 (ko) * 2009-03-05 2011-09-05 박형태 플로어 힌지 어셈블리
DE102011055974A1 (de) * 2011-12-02 2013-06-06 Dorma Gmbh + Co. Kg Türbetätiger
CN202645244U (zh) * 2012-04-16 2013-01-02 肇庆市志盛门控五金有限公司 一种隐藏式闭门器

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5901412A (en) * 1996-01-30 1999-05-11 Dorma Gmbh + Co. Kg Top-mounted door closer
EP2138662A2 (fr) * 2008-06-27 2009-12-30 Taiwan Fu Hsing Industrial Co. Ltd. Ferme-porte automatique

Also Published As

Publication number Publication date
CN105672799A (zh) 2016-06-15

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