EP4180608A1 - Ferme-porte - Google Patents

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Publication number
EP4180608A1
EP4180608A1 EP22205204.5A EP22205204A EP4180608A1 EP 4180608 A1 EP4180608 A1 EP 4180608A1 EP 22205204 A EP22205204 A EP 22205204A EP 4180608 A1 EP4180608 A1 EP 4180608A1
Authority
EP
European Patent Office
Prior art keywords
blocking body
valve
piston
receiving section
section
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.)
Granted
Application number
EP22205204.5A
Other languages
German (de)
English (en)
Other versions
EP4180608B1 (fr
Inventor
Vladimir Pugin
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.)
Gretsch Unitas GmbH Baubeschlaege
Original Assignee
Gretsch Unitas GmbH Baubeschlaege
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 Gretsch Unitas GmbH Baubeschlaege filed Critical Gretsch Unitas GmbH Baubeschlaege
Publication of EP4180608A1 publication Critical patent/EP4180608A1/fr
Application granted granted Critical
Publication of EP4180608B1 publication Critical patent/EP4180608B1/fr
Active legal-status Critical Current
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
    • E05F3/104—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
    • 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
    • E05F3/12—Special devices controlling the circulation of the liquid, e.g. valve arrangement
    • 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
    • E05Y2201/23—Actuation thereof
    • E05Y2201/232—Actuation thereof by automatically acting means
    • E05Y2201/236—Actuation thereof by automatically acting means using force or torque
    • 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
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/26—Form, shape
    • 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
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13—Application of doors, windows, wings or fittings thereof for buildings or parts thereof characterised by the type of wing
    • E05Y2900/132—Doors

Definitions

  • the invention relates to a door closer with features of the preamble of claim 1.
  • Door closers of the type mentioned are known from the prior art, for example DE 20 2012 003 928 U1 . With such a door closer, it is possible to actuate a door leaf so that it can be transferred to the closed position starting from different opening angles.
  • the valves located in the damping piston and drive piston are important for the door closer's function of being able to reliably move a door leaf into the closed position and for safety (overload situations). These serve to regulate the flow of fluid between part of the with the fluid (eg. A hydraulic oil) filled interior and another part of the interior of the door closer.
  • the overload valves on the drive piston and damping piston are used to reduce or avoid overload situations, so that damage to the door closer can be prevented. With a structural simplification of the overload valves, there is regularly the risk of malfunctions, for example due to leaks.
  • the invention is based on the object of specifying a door closer with a structurally simple yet reliably operating overload valve.
  • the invention solves this problem with a door closer having the features of claim 1.
  • the door closer is set up and/or intended for actuating a wing of a door, a window or the like.
  • the door closer has a closer shaft and a cam disk non-rotatably connected to the closer shaft, the cam disk interacting, in particular via a drive contour, with a drive device comprising a drive piston and, in particular via a damping contour, with a damping device comprising a damping piston.
  • the drive piston and/or the damping piston each have an overload valve.
  • the overload valve has in each case a valve channel extending along a channel axis (in the relevant piston, ie in the drive piston or in the damping piston), a blocking body and a sealing seat.
  • the locking body is in received in a blocking body receiving section in the valve channel and, in the closed state of the overload valve, bears against the sealing seat, in particular in a sealing manner.
  • the valve channel has an n-cornered cross section (internal cross section) with n ⁇ 3 at least in the blocking body receiving section, preferably along the entire valve channel.
  • the locking body is spherical or cylindrical.
  • the blocking body can be designed as a ball or rotary part or as a cylinder, in particular as a vertical circular cylinder.
  • the proposed design allows the blocking body to be positioned precisely relative to the sealing seat or to the valve opening, with the fact that the cross sections of the blocking body (spherical or cylindrical) and the blocking body receiving section or the valve channel (n-sided with n ⁇ 3) are differ from each other, sufficient outflow openings remain in the corner areas of the n-sided cross section.
  • This is a structurally particularly simple design that even allows the use of standard bodies, for example a sphere.
  • the blocking body is in particular matched to the blocking body receiving section in such a way that the blocking body can move in the valve channel along the blocking body section, in particular can roll along the channel axis.
  • a The "halo" that occurs with barriers that cannot roll along the axis of the channel can be avoided.
  • the blocking body can bear against at least two inner surfaces of the n-cornered cross section of the blocking body receiving section or of the valve channel.
  • the blocking body can be dimensioned in such a way that the blocking body is guided in the blocking body receiving section orthogonally to the channel axis or laterally without play.
  • the blocking body is thus movable axially along the axis of the channel, for example by rolling, but does not experience any lateral play. Due to a lack of lateral play, the blocking body is always centered on the sealing seat. This contributes to reliable sealing when the overload valve is closed.
  • n ⁇ 3 and n ⁇ 8 can preferably contribute (3 ⁇ n ⁇ 8).
  • sufficient contact surfaces for the blocking body are available with the inner surfaces of the valve channel, sufficient outflow openings remaining in the corner regions.
  • valve channel can have a square cross section at least in the blocking body receiving section, preferably along the entire valve channel. This promotes flexibility with regard to the selection of blocking bodies, since both spherical and cylindrical blocking bodies can be guided by means of the square cross section.
  • the spherical blocking body (ball) can bear against the four inner surfaces of the blocking body receiving section or of the valve channel.
  • the cylindrical blocking body can bear against two opposite inner surfaces of the blocking body receiving section or of the valve channel.
  • optional roundings can be formed in the corner regions between adjacent inner surfaces. This reduces the notch effect occurring in the corner areas.
  • the production of the blocking body receiving section or the valve channel can be simplified, for example by using milling tools with a larger diameter.
  • the length of the blocking body receiving section along the channel axis can be dimensioned in such a way that the blocking body, starting from the sealing seat (closed state of the overload valve) in the blocking body receiving section, can be displaced by a distance of 0.6 mm to 1.3 mm (millimeters). can (open state of the overload valve). This frees up a sufficient opening cross-section between the sealing seat and the blocking body on the overload valve, so that the fluid (e.g. an oil) contained in the interior of the door closer can flow through the overload valve.
  • the fluid e.g. an oil
  • the sealing seat can be formed by a shoulder in the valve channel, through which the cross section of the valve channel is reduced in relation to the blocking body receiving section. This can be done with simple means Sealing seat are formed.
  • the internal dimensions or the internal diameter of the valve channel at the shoulder can be smaller than the external dimensions, for example the diameter, of the blocking body.
  • the side edges of the blocking body receiving section can be shaped, in particular embossed, at the end of the blocking body receiving section facing away from the sealing seat in such a way that the cross section of the valve channel is reduced at the side edges relative to the cross section of the blocking body receiving section.
  • a structurally simple stop can be formed, with which the displacement of the blocking body away from the sealing seat can be limited.
  • the cross section of the valve channel is reduced at the side edges in relation to the cross section of the blocking body receiving section, in particular such that the blocking body cannot get out of the blocking body receiving section at the end facing away from the sealing seat.
  • the piston head of the drive piston can face a pressure chamber on the drive side and/or the damping piston can face a pressure chamber on the damping side with its piston head.
  • the opening direction of the overload valve of the drive piston faces the pressure chamber on the drive side (valve opens towards the pressure chamber on the drive side).
  • the opening direction of the overload valve of the damping piston faces the pressure chamber on the damping side (valve opens toward the pressure chamber on the damping side).
  • the closer shaft is arranged in particular between the drive piston and the damping piston (in a so-called “gear chamber”), with the piston head of the drive piston and the piston head of the damping piston each facing away from the closer shaft.
  • the overload valves can each open to the pressure chamber on the drive side or to the pressure chamber on the damping side. This allows the pressure in the gear compartment to be relieved.
  • the drive piston and/or the damping piston can each have a control valve that is prestressed, in particular spring-prestressed, in the closed position, with the control valve being arranged in a further valve channel (embodied in the relevant piston, i.e. in the drive piston or in the damping piston) and on Piston crown opens out, wherein the control valve has an opening direction which is remote from the piston crown.
  • the control valve or valves open away from the piston head and thus towards the transmission chamber.
  • the control valves each allow fluid (for example an oil) to flow back from the pressure chamber on the drive side or from the pressure chamber on the damping side into the gear chamber.
  • FIG 1 a door closer is shown, which is denoted by the reference numeral 10 in its entirety.
  • the door closer 10 is used to actuate, in particular to close, a wing of a door (not shown).
  • the door closer 10 has a door closer housing 12 which extends essentially along a door closer axis 14 .
  • the door closer housing 12 is closed at its lateral ends by means of closure covers 16, 18. Furthermore, the door closer housing 12 is filled with a fluid, for example a hydraulic oil (not shown in detail).
  • the door closer 10 has a closer shaft 20 which is arranged in a gear chamber 22 of the door closer 12 .
  • the shutter shaft 20 extends along a Closer shaft axis 24, which is preferably oriented orthogonally to the door closer axis 14.
  • the closer shaft 20 is rotatably mounted on the door closer housing 12 about the closer shaft axis 24 .
  • the closer shaft 20 has a cam disk 26 which is connected to the closer shaft 20 in a torque-proof manner.
  • the cam disk 26 in turn has a drive contour 28 and a damping contour 30 .
  • the closer shaft 20 has, at its output-side ends, engagement sections 36 that protrude out of the door closer housing 12 and are designed as a polygon, for example as a square.
  • the closer shaft 20 can be coupled to a leaf of a door (not shown) by means of a closer linkage via the engagement sections 36 .
  • the closer linkage can, for example, be guided in a slide rail on the wing side.
  • the door closer 10 also includes a drive device 38, which is arranged between the closer shaft 20 and a first (drive-side) closure cover 16 in the door closer housing 12 (in Fig.1 to the right).
  • the drive device 38 has a drive piston 40 (spring piston) which is guided displaceably along the door closer axis 14 along the double arrow 44 on the inner wall of the door closer housing 12 .
  • the drive piston 40 is arranged on the closer shaft side.
  • the drive piston 40 and the first closure cover 16 are spaced apart from one another along the door closer axis 14 arranged and define together with the door closer housing 12 a drive-side pressure chamber 46.
  • valve channels are formed, via which the drive-side pressure chamber 46 can be flow-connected to the gear chamber 22. This is described further below.
  • a spring 48 in particular a compression spring, is arranged in the pressure chamber 46 on the drive side.
  • a further spring 50 in particular a compression spring, can be arranged in the drive-side pressure chamber 46, which is connected in parallel to the spring 48.
  • the additional spring 50 is arranged radially inside the spring 48 .
  • the spring 48 is supported via a spring plate 52 and the further spring 50 via a threaded section 54 relative to the closure cover 16 on the drive side.
  • the drive piston 40 and its drive roller 56 (cf. Figures 3b, 3d ) is subjected to a force in the direction of the closer shaft 20, so that the drive roller 56 is always in contact with the drive contour 28.
  • the door closer 10 also includes a damping device 60 (cf. Fig.1 ), which is arranged between the closer shaft 20 and a second (damping side) closure cover 18 in the door closer housing 12 (in Fig.1 Left).
  • a damping device 60 cf. Fig.1
  • the door closer 10 also includes a damping device 60 (cf. Fig.1 ), which is arranged between the closer shaft 20 and a second (damping side) closure cover 18 in the door closer housing 12 (in Fig.1 Left).
  • the damping device 60 has a damping piston 62 which is guided in a displaceable manner on the inner wall of the door closer housing 12 along the door closer axis 14 along the double arrow 44 .
  • a damping-side pressure chamber 64 is arranged, which extends between the second closure cap 18 and the damping piston 62 .
  • Valve channels are formed in the damping piston 62 , via which the pressure chamber 64 on the damping side can be flow-connected to the gear chamber 22 . This is described further below.
  • the damping device 60 also has a tracking spring 66 .
  • the tracking spring 66 is preferably arranged on the second (damping-side) closure cap 18 and tensioned between the closure cap 18 and the damping piston 62 .
  • the damping piston 62 and its damping roller 68 (cf. Figures 2b, 2d ) is subjected to a force in the direction of the closer shaft 20, so that the damping roller 68 is always in contact with the damping contour 30.
  • the damping piston 62 is described in more detail below (cf. Figures 2a to 2d ).
  • the damping piston 62 has the damping roller 68 already mentioned above, which is arranged in a corresponding recess 69 on the damping piston 62 and arranged via axle sections 70 in axle receiving sections 72 and is mounted on the damping piston 62 so that it can rotate about a roller axis 74 .
  • the damping piston 62 On its circumference, the damping piston 62 has at least largely, preferably completely, circumferential slide or guide rings 76 .
  • the damping piston 62 has a sealing arrangement 78 on its circumference, which is formed, for example, from an internal O-ring 80 and an external sealing ring 82 .
  • the damping piston 62 also includes an overload valve 84 .
  • the overload valve 84 has a valve channel 88 formed in the damping piston 62 and extending along a channel axis 86 , a blocking body 90 and a sealing seat 91 .
  • a flow connection between the recess 69 and an area on the piston head 93 of the damping piston 62 can be produced via the valve channel 88 - if the blocking body 90 does not rest on the sealing seat 91 .
  • the blocking body 90 is accommodated in a blocking body receiving section 92 in the valve channel 88 and in the closed state of the overload valve 84 bears sealingly against the sealing seat 91 .
  • the valve channel 88 has an n-cornered cross section (internal cross section) in the blocking body receiving section 92 .
  • n 4
  • the blocking body receiving section 92 has a square cross section.
  • optional roundings 99 (“grooves”) are formed in the blocking body receiving section 92, for example.
  • the blocking body 90 is spherical, ie it is designed as a sphere.
  • the blocking body 90 is dimensioned in such a way that the blocking body 90 is guided without play in the blocking body receiving section 92 orthogonally or laterally to the channel axis 86 .
  • the spherical pawl 90 abuts the four inner surfaces of the pawl receiving portion 92 at respective contact points 97 .
  • the length of the blocking body receiving section 92 along the channel axis 86 is dimensioned such that the blocking body 90 can be displaced by a distance of 0.6 mm to 1.3 mm starting from the sealing seat 91 (closed state of the overload valve 84) in the blocking body receiving section 92 (open state of the overload valve 84).
  • the sealing seat 91 is formed by a shoulder 94 in the valve channel 88, through which the cross section of the valve channel 88 is reduced in relation to the blocking body receiving section 92.
  • Blocking body receiving section 92 are shaped or embossed in such a way that the cross section of the valve channel 88 is reduced at the side edges 95 in relation to the cross section of the blocking body receiving section 92 . As a result, displacement of the locking body 90 away from the sealing seat 91 is limited in the locking body receiving section 92 .
  • the damping piston 62 faces the damping-side pressure chamber 64 with its piston head 93 (cf. Fig.1 ), wherein the opening direction of the overload valve 84 of the damping piston 62 faces the pressure chamber 64 on the damping side.
  • the overload valve 84 opens towards the pressure chamber 64 on the damping side when the pressure is correspondingly applied.
  • the damping piston 62 also has a control valve 96 that is prestressed in the closed position, in the example spring prestressed (cf. Fig.2b ).
  • the control valve 96 is arranged in a further valve channel 98 and opens out at the piston head 93, the control valve 96 having an opening direction has, which faces away from the piston crown 93. In other words, the control valve 96 opens towards the gear chamber 22 when it is acted upon appropriately.
  • the drive piston 40 is described in more detail below (cf. 3a to 3d ), which is designed largely analogously to the damping piston 62.
  • the drive piston 40 has the drive roller 56 already mentioned above, which is arranged in a corresponding recess 100 on the drive piston 40 and arranged via axle sections 102 in axle receiving sections 104 and is mounted on the drive piston 40 so as to be rotatable about a roller axis 106 .
  • the drive piston 40 On its circumference, the drive piston 40 has at least largely, preferably completely, circumferential slide or guide rings 108 .
  • the drive piston 40 has a sealing arrangement 110 on its circumference, which is formed, for example, from an internal O-ring 112 and an external sealing ring 114 .
  • the drive piston 40 also includes an overload valve 116.
  • the overload valve 116 has a valve channel 120 formed in the drive piston 40 and extending along a channel axis 118, a blocking body 122 and a sealing seat 124.
  • a flow connection between the recess 100 and an area on the piston head 126 of the drive piston 40 can be produced via the valve channel 120 - if the blocking body 122 does not rest on the sealing seat 124 .
  • the blocking body 122 is accommodated in a blocking body receiving section 128 in the valve channel 120 and is in sealing contact with the sealing seat 124 when the overload valve 116 is in the closed state.
  • the valve channel 120 has in the example in
  • the blocking body 122 is spherical, ie it is designed as a sphere.
  • the blocking body 122 is dimensioned in such a way that the blocking body 122 is guided without play in the blocking body receiving section 128 orthogonally or laterally to the channel axis 118 .
  • the spherical pawl 122 abuts the four inner surfaces of the pawl receiving portion 128 at respective contact points 129 .
  • blocking body receiving section 128 along channel axis 188 is dimensioned such that blocking body 122 can be displaced by a distance of 0.6 mm to 1.3 mm starting from sealing seat 124 (closed state of overload valve 116) in blocking body receiving section 128 (open state of overload valve 116). overload valve 116).
  • the sealing seat 124 is formed by a shoulder 131 in the valve channel 120, through which the cross section of the valve channel 120 is reduced in relation to the blocking body receiving section 128.
  • the side edges 132 of the locking body receiving section 128 at the end facing away from the sealing seat 124 of the Blocking body receiving section 128 are formed or embossed in such a way that the cross section of the valve channel 120 is reduced at the side edges 132 in relation to the cross section of the blocking body receiving section 128 .
  • displacement of the locking body 122 away from the sealing seat 124 is limited in the locking body receiving section 128 .
  • the drive piston 40 faces the drive-side pressure chamber 46 with its piston head 126 (cf. Fig.1 ), wherein the opening direction of the overload valve 116 of the drive piston 40 faces the pressure chamber 46 on the drive side.
  • the overload valve 116 opens towards the pressure chamber 46 on the drive side when there is a corresponding load.
  • the drive piston 40 also has a control valve 134 that is prestressed in the closed position, in the example spring prestressed (cf. Fig.3b ).
  • the control valve 134 is in each case arranged in a further valve channel 136 and opens out at the piston head 126 , the control valve 134 having an opening direction which is remote from the piston head 126 . In other words, the control valve 134 opens towards the gear chamber 22 when it is acted upon appropriately.
  • the square cross section of the blocking body receiving section 92, 128 and the blocking body 90, 122 which is spherical in the example, enables precise positioning of the blocking body 90, 122 relative to the sealing seat 91, 124 or to the valve opening, with sufficiently large outflow openings 89, 138 (space between Outer contour of the blocking body and the inner contour of the blocking body receiving section) remain for the fluid.
EP22205204.5A 2021-11-15 2022-11-03 Ferme-porte Active EP4180608B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102021129628.5A DE102021129628A1 (de) 2021-11-15 2021-11-15 Türschließer

Publications (2)

Publication Number Publication Date
EP4180608A1 true EP4180608A1 (fr) 2023-05-17
EP4180608B1 EP4180608B1 (fr) 2024-03-13

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ID=84329915

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Application Number Title Priority Date Filing Date
EP22205204.5A Active EP4180608B1 (fr) 2021-11-15 2022-11-03 Ferme-porte

Country Status (3)

Country Link
EP (1) EP4180608B1 (fr)
DE (1) DE102021129628A1 (fr)
FI (1) FI4180608T3 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1497220A (en) * 1976-05-19 1978-01-05 Wherton I Door closer
DE2816806A1 (de) * 1978-04-18 1979-10-31 Teves Gmbh Alfred Ventil
US4999872A (en) * 1987-12-12 1991-03-19 Dorma Gmbh & Co. Kg Door closer
DE202012003928U1 (de) 2012-04-18 2013-07-22 Gretsch-Unitas Gmbh Türschließer
WO2019076746A1 (fr) * 2017-10-16 2019-04-25 Gretsch-Unitas Gmbh Baubeschlaege Dispositif de fermeture pour fermer un battant de porte ou de fenêtre

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020108623A1 (de) 2020-03-27 2021-09-30 Gretsch-Unitas GmbH Baubeschläge Schließvorrichtung zum Schließen eines Tür- oder Fensterflügels

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1497220A (en) * 1976-05-19 1978-01-05 Wherton I Door closer
DE2816806A1 (de) * 1978-04-18 1979-10-31 Teves Gmbh Alfred Ventil
US4999872A (en) * 1987-12-12 1991-03-19 Dorma Gmbh & Co. Kg Door closer
DE202012003928U1 (de) 2012-04-18 2013-07-22 Gretsch-Unitas Gmbh Türschließer
WO2019076746A1 (fr) * 2017-10-16 2019-04-25 Gretsch-Unitas Gmbh Baubeschlaege Dispositif de fermeture pour fermer un battant de porte ou de fenêtre

Also Published As

Publication number Publication date
DE102021129628A1 (de) 2023-05-17
EP4180608B1 (fr) 2024-03-13
FI4180608T3 (fi) 2024-04-04

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