EP2924216B1 - Door closer - Google Patents

Door closer Download PDF

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Publication number
EP2924216B1
EP2924216B1 EP14161299.4A EP14161299A EP2924216B1 EP 2924216 B1 EP2924216 B1 EP 2924216B1 EP 14161299 A EP14161299 A EP 14161299A EP 2924216 B1 EP2924216 B1 EP 2924216B1
Authority
EP
European Patent Office
Prior art keywords
side end
closer
housing
end position
spring
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.)
Active
Application number
EP14161299.4A
Other languages
German (de)
French (fr)
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EP2924216A1 (en
Inventor
Lothar Singer
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 Baubeschlage GmbH
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Gretsch-Unitas Baubeschlage GmbH
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Application filed by Gretsch-Unitas Baubeschlage GmbH filed Critical Gretsch-Unitas Baubeschlage GmbH
Priority to EP14161299.4A priority Critical patent/EP2924216B1/en
Publication of EP2924216A1 publication Critical patent/EP2924216A1/en
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    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/04Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
    • E05F3/10Closers 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
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/04Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
    • E05F3/10Closers 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
    • E05F3/102Closers 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 rack-and-pinion transmission between driving shaft and piston within the closer housing
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/04Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
    • E05F3/10Closers 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
    • E05F3/104Closers 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
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING 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
    • E05Y2201/00Constructional elements; Accessories therefore
    • E05Y2201/40Motors; Magnets; Springs; Weights; Accessories therefore
    • E05Y2201/47Springs; Spring tensioners
    • E05Y2201/492Spring tensioners, tension sensors
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING 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
    • E05Y2201/00Constructional elements; Accessories therefore
    • E05Y2201/60Suspension or transmission members; Accessories therefore
    • E05Y2201/622Suspension or transmission members elements
    • E05Y2201/696Screw mechanisms
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING 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
    • E05Y2600/00Mounting or coupling arrangements for elements provided for in this subclass
    • E05Y2600/10Adjustable or movable
    • E05Y2600/20Adjustable or movable characterised by the movement transmission

Description

  • The invention relates to a door closer
    • with a door closer housing, which has a cylindrical interior, whose cylinder axis forms a housing axis of the door closer housing and which is delimited by an inner wall of the door closer housing running parallel to the cylinder axis,
    • with a closing piston, which is movably guided in the interior of the door closer housing along the housing axis,
    • with a designed as a helical spring with a spring axis closing spring, which is arranged in the interior of the door closer housing between the closing piston and along the housing axis spaced from the closing piston spring abutment extending along the housing axis spring axis and the spring piston side on the one hand and on the other hand under force of the spring abutment in the direction of the spring axis is supported directly on the spring abutment and
    • with a threaded actuator, by means of which the spring abutment can be adjusted relative to the closing piston by changing the bias of the closing spring along the housing axis and comprising an adjusting spindle, on which the spring abutment is seated and which has a spindle axis extending along the housing axis and provided with a setting external thread is that meshes with an adjusting internal thread of the spring abutment,
    • wherein the adjusting spindle is rotatably mounted on the door closer housing about the spindle axis and is rotatable relative to the spring abutment in a clamping direction of rotation and in a direction opposite to the clamping direction of rotation relaxation direction of rotation about the spindle axis and wherein the spring abutment executed due to a relative to the spring abutment rotation the adjusting spindle in the clamping direction of rotation along the spindle axis with a clamping feed movement in the direction of a Schließerkolbenseitige end position is movable and acted in the Schließerkolbenseitigen end position a Schließerkolbenseitigen stop in the direction of the clamping feed movement and wherein the spring abutment executed due to a relative to the spring abutment rotation the adjusting spindle in the relaxation direction of rotation along the spindle axis is displaceable in the direction of a housing-side end position with a counter to the clamping feed movement relaxation feed movement and applied in the housing-side end position spaced from the Schließerkolbenseitigen end stop along the housing axis housing-side end stop in the direction of the relaxation feed movement,
    • wherein the spring abutment (7) as with the spindle axis (3) and with the interior (21) of the door closer housing (13) concentric abutment circular disc is formed, the diameter of the maximum diameter of the interior (21) of the door closer housing (13) corresponds and
    • wherein due to the application of force to the spring abutment (7) by the closing spring (18) the adjusting spindle (2) relative to the spring abutment (7) in the clamping direction of rotation (16) and in the relaxation direction of rotation (17) about the spindle axis (3) is rotatable and thereby the spring abutment (7) with a clamping feed movement in the direction of the Schließerkolbenseitige end position and with a relaxation feed movement from Schließerkolbenseitigen end position in the direction of the housing-side end position and with a relaxation feed movement in the direction of the housing-side end position and a voltage feed movement from the housing-side end position in the direction of the Schließerkolbenseitige end position is movable.
  • Door closers of the above type are made DE 92 03 870 U1 and from US 2003/0093872 A1 known. A closer shaft is rotatably mounted on a door closer housing about a shaft axis and passes through a cylindrical interior of the door closer housing. A closing piston is arranged in the interior of the door closer housing on one side of the closer shaft and movably guided along a housing axis, which is formed by the cylinder axis of the cylindrical interior of the door closer housing. At the side remote from the closer shaft of the closer piston, a helical spring is arranged in the cylindrical interior of the door closer housing, which is supported on the one hand on the closing piston and on the other hand on a front-side housing cover of the door closer housing. About a toothing of the closer shaft and thus meshing counter-toothing on the closing piston or via a provided on the closer shaft cam, on which the closing piston is supported, rotational movements of the closer shaft are converted to the shaft axis in linear movements of the closing piston along the housing axis or linear movements of the closing piston along the housing axis in rotational movements of the closer shaft about the shaft axis. If the door leaf provided with the door closer is turned open, the closer shaft is rotated about the shaft axis. Due to the rotational movement, the closer shaft drives the closing piston under bias of the coil spring arranged between the closing piston and the front-side housing cover with a movement along the housing axis of the door closer housing. If the door leaf is released after the rotary opening, the previously preloaded coil spring lengthens and thereby drives the closing piston with a movement directed against the closer shaft along the housing axis of the door closer housing. As a result, the closer shaft is rotated about the shaft axis and the rotational movement of the closer shaft causes via the linkage an automatic closing movement of the door leaf. The bias of the coil spring and thus the force exerted to automatically close the open door leaf closing force and to be overcome when opening the door panel counterforce is adjustable. For this purpose, the coil spring is not supported on the side remote from the closing piston side directly on the front-side housing cover of the door closer housing but rather on a spring abutment which rests on an adjusting spindle. The adjusting spindle extends with a spindle axis along the housing axis of the door closer housing and is rotatably mounted on the front-side cover of the door closer housing about the spindle axis but in the direction of the spindle axis. An external thread of the adjusting spindle meshes with an internal thread of the spring abutment. By turning the adjusting spindle, the spring abutment is moved along the adjusting spindle in different positions and thereby varies the bias of the supported on the spring abutment coil spring. The displacement of the spring abutment is limited at the lying to the closing piston end of the adjusting spindle by a stop. In the opposite direction, the spring abutment can be moved until it abuts against the front-side housing cover of the door closer housing. In its end positions, the spring abutment bears against the respective end stop. If, after reaching the end position, the adjusting spindle continues to be acted upon in the relevant direction of rotation, the spring abutment is braced against the respective end stop. Should the bias the coil spring are changed starting from these ratios, the spring abutment is first to be released from the respective end stop. For this purpose, the adjusting spindle is to be rotated in a direction of rotation which is opposite to the direction of rotation of the adjusting spindle when approaching the end stop by the spring abutment. Prerequisite for both the movement of the spring abutment until reaching an end position and for releasing the spring abutment of the respective end stop is a rotational movement of the adjusting spindle relative to the spring abutment. For this purpose, a friction is generated between the spring abutment and the helical spring supported on the spring abutment, due to which the spring abutment together with the helical spring forms a non-rotatable unit and does not rotate with the rotationally actuated adjusting spindle.
  • In order to ensure a rotational movement of the adjusting spindle relative to the spring abutment and to avoid that the adjusting spindle entrains in its rotational movement seated on the adjusting spindle spring abutment in the direction of rotation, it is also common, the spring abutment on its outer circumference with radial projections and the door closer housing on his Inner wall to be provided with along the housing axis of the door closer housing extending guide grooves, in which engage the radial projections of the spring abutment.
  • The object of the present invention, starting from the generic prior art is to provide a door closer with an overload protection for the device for adjusting the bias of the closing spring.
  • This object is achieved according to the invention by the door closer according to claim 1.
  • According to the claim, the spring abutment is designed as an abutment circular disc concentric with the spindle axis of the screw drive and with the interior of the door closer housing, whose diameter corresponds at most to the diameter of the interior of the door closer housing. The abutment circular disc can be provided with a low production engineering and with a low financial cost. A constructively elaborate Longitudinal guide of the abutment circular disc along the spindle axis of the screw drive or the housing axis of the door closer housing is not provided. For the generation of a clamping feed movement and / or a relaxation feed movement of the spring abutment required relative movement between the adjusting spindle of the screw drive and the spring abutment provides the closing spring and thus an already existing door closer component. Due to the application of force by the closing spring, the spring abutment is prevented from being able to follow rotational movements of the adjusting spindle of the screw drive in the clamping direction of rotation and / or in the direction of unclamping. In particular, the application of force to the spring abutment by the closing spring ensures that after the movement of the spring abutment into the closing piston-side end position and / or into the housing-side end position and the associated "caking" of the spring abutment at the respective end stop, an action on the adjusting spindle in the corresponding direction of rotation Rotary movement of the adjusting spindle relative to the spring abutment has the consequence and thus the spring abutment is released from the previously approached end stop.
  • As such, the rotational movement of the adjusting spindle should end in the clamping direction of rotation and in the direction of relaxation as soon as the spring abutment has reached the closing piston-side end position or the housing-side end position. In practice, however, can not be ruled out that the adjusting spindle after reaching the Schließerkolbenseitigen end position by the spring abutment further in the clamping direction of rotation or after reaching the housing-side end position by the spring abutment further in the relaxation direction of rotation is subjected to force. In such cases, according to the invention supported on the spring abutment closing spring allows that the adjusting spindle is jointly rotated with the spring abutment acting on the respective end stop in the clamping direction of rotation or in the relaxation direction of rotation. The support of the closing spring on the spring abutment assumes the function of a slip clutch. As a result, an overload protection is provided for the device for adjusting the bias of the closing spring. The entrained by the adjusting spindle in the respective direction of rotation spring abutment can due to its geometry and its with the housing axis of the door closer Concentric arrangement the rotation of the adjusting spindle mitvollziehen without colliding with the inner wall of the door closer housing.
  • Particular embodiments of the door closer according to the independent claim 1 emerge from the dependent claims 2 to 11.
  • As shown in claim 2, a stop plate is provided as Schließerkolbenseitiger end stop and / or as a housing-side end stop for the spring abutment in a preferred embodiment of the invention. The plate-like end stop provides a relatively large-scale system for moving in the respective end position spring abutment and ensures in this way for defined conditions at the respective end stop. As a result, it is possible to make the loading of the spring abutment by the closing spring in such a way and generally the parameters that are decisive for a functionally reliable operation of the screw drive, to define such that a functionally reliable adjustment of the bias of the shutter spring is ensured.
  • In the interest of the simplest possible and cost-effective production of Schließerkolbenseitigen end stop and / or the housing-side end stop for the spring abutment is shown in claim 3 as a stop plate concentric with the adjusting stop disk provided.
  • The claims 4 to 11 relate to the invention preferred measures to ensure a functionally reliable adjustment of the bias of the shutter spring. The claimed measures may be provided individually or in combination with each other.
  • According to claim 4, the amount of force with which the closing spring acts on the spring abutment, selected appropriately.
  • According to claim 5, the radial distance from the spindle axis, with which the closing spring is supported on the spring abutment, taken into account as the decisive criterion. As shown in claim 6 is placed on the radial distance from the spindle axis, with which the spring abutment in the Schließerkolbenseitigen End position the closing piston-side end stop and / or applied in the housing-side end position of the housing-side end stop.
  • In particular, it is provided that the radial distance from the spindle axis, with which the spring abutment in the Schließerkolbenseitigen end position and / or in the housing-side end position acts on the respective end stop and the radial distance from the spindle axis, with which the closing spring is supported on the spring abutment, each other are coordinated.
  • At the door closer according to claim 7, the radial distance from the spindle axis, with which the adjusting external thread of the adjusting spindle and the adjusting internal thread of the spring abutment are supported along the spindle axis to each other, chosen such that the adjusting spindle for adjusting the bias of the closing spring required rotational movements relative to the spring abutment can perform.
  • As shown in claim 8, the thread pitch of the threaded actuator according to the invention is such that for adjusting the bias of the closing spring, the adjusting spindle can be rotated relative to the spring abutment and that at the same time excluded from the application of force to the spring abutment by the closing spring rotational movement of the spring abutment relative to the adjusting spindle is.
  • In the case of Erfindungsbauart according to claims 9 to 11, the friction coefficients between different door closer components are chosen appropriately. In this case, claim 9, the coefficient of friction between the spring abutment and supported on the spring abutment closing spring, claim 10 the coefficient of friction between the adjusting outer thread of the adjusting spindle and the adjusting internal thread of the spring abutment and claim 11 the coefficient of friction between the Schließerkolbenseitigen stop and / or the housing-side end stop on the one hand and in the Schließerkolbenseitigen end position or the housing-side end position supported on the respective end stop spring abutment on the other. An influence on the relevant coefficients of friction is possible in particular by an appropriate choice of material. About for those with the Stell-externally threaded adjusting spindle and provided with the adjusting internal thread spring abutment steel is preferred as a material according to the invention.
  • The invention will be explained in more detail below with reference to exemplary schematic illustrations. Show it:
  • FIG. 1
    a threaded actuator for adjusting the bias of a closing spring of a door closer,
    FIG. 2
    the threaded actuator according to FIG. 1 in installation position on a door closer housing and
    FIGS. 3 and 4
    the arrangement according to FIG. 2 With FIG. 2 deviating functional states of the threaded actuator.
  • According to FIG. 1 a threaded actuator 1 for a door closer comprises an adjusting spindle 2 with a spindle axis 3. On a shaft 4, the adjusting spindle 2 is provided with an adjusting external thread 5. At the adjusting external thread 5, the adjusting spindle 2 meshes with an adjusting internal thread 6 on a spring abutment 7 designed as spring plate. Both the adjusting spindle 2 and the spring plate 7 are made of steel.
  • As Schließerkolbenseitiger end stop for the spring plate 7 is connected to the in FIG. 1 left longitudinal end of the adjusting spindle 2, a circular stop disc 8 is provided, which is riveted to the shaft 4 of the adjusting spindle 2.
  • A likewise disc-like housing-side end stop for the spring plate 7 is formed in the form of an outer collar 9 at a distance from the stop disc 8 to the shaft 4 of the adjusting spindle 2. At the side remote from the spring plate 7 side of the outer collar 9, the adjusting spindle 2 has a sealing groove 10 and an actuating end 11 with a hexagon socket 12 ( FIG. 2 ).
  • FIG. 1 shows the screw drive 1 in a functional state in which the spring plate 7 rests against the stop plate 8. With this functional status, the screw drive is 1 in FIG. 2 shown in installation position on a door closer housing 13. In this case, the adjusting spindle 2 is rotatably mounted on a front-side housing cover 14 of the door closer housing 13 about a housing axis 15 and fixed in the direction of the spindle axis 3. The housing axis 15 of the door closer housing 13 coincides with the spindle axis 3. The spring plate 7 is designed as a concentric with the spindle axis 3 of the adjusting spindle 2 and the housing axis 15 of the door closer housing 13 abutment circular disc. To the spindle axis 3 and the housing axis 15, the adjusting spindle 2 by means of an inserted into the hexagon socket 12 hexagon in a clamping direction of rotation (arrow 16 in FIG. 2 ) and in a relaxation direction of rotation (arrow 17 in FIG FIG. 2 ) to be turned around.
  • The spring plate 7 is acted upon on the side remote from the housing cover 14 side by a closing spring designed as a helical spring 18. In this case, the closing spring 18 is supported directly on the spring plate 7.
  • The closing spring 18 has a coincident with the spindle axis 3 of the adjusting spindle 2 and the housing axis 15 of the door closer housing 13 spring axis 19 and is biased along the spring axis 19 between the spring plate 7 and a conventional closer piston not shown in the figures of the door closer. Due to its bias, the closing spring 18 acts on the spring plate 7 along the spring axis 19 with an in FIG. 2 rightward force. Under the action of this force, the adjusting spindle 2 is supported with the rear side of the outer collar 9 via a sliding ring on the housing cover 14. An inserted into the seal groove 10 of the adjusting spindle 2 sealing ring 20th seals a cylindrical interior 21 of the door closer housing 13 from the environment. The cylinder axis of the cylindrical interior 21 forms the housing axis 15 of the door closer housing 13. The diameter of the cylindrical interior 21 is greater than the diameter of the concentric with the interior 21 spring plate. 7
  • In FIG. 2 illustrated are radial distances r 1 , r 2 and r 3 . When r 1 is the radial distance from the spindle axis 3, with which the closing spring 18 is supported on the spring plate 7. With r 2 , the radial distance from the spindle axis 3 is designated, with which the spring plate 7 in the position according to the Figures 1 and 2 the stopper disc 8 and in the position according to FIG. 4 the outer collar 9 is acted upon along the spindle axis 3. r 3 is the radial distance from the spindle axis 3, with which the adjusting external thread 5 of the adjusting spindle 2 and the adjusting internal thread 6 of the spring plate 7 supported along the spindle axis 3 to each other.
  • In the functional state according to FIG. 2 the closer spring 18 is biased by means of the screw drive maximum 1. The spring plate 7 is in its Schließerkolbenseitigen end position. In this position, the spring plate 7 has been moved by a rotational actuation of the adjusting spindle 2 in the clamping direction of rotation 16. Due to the rotational actuation of the adjusting spindle 2 in the clamping direction of rotation 16, the spring plate 7 has performed a clamping feed movement in the direction of an arrow 22. In the course of the clamping feed movement of the spring plate 7 came to the stop plate 8 to the plant. As a result of a corresponding rotational actuation of the adjusting spindle 2, the spring plate 7 was braced axially against the stop plate 8 to a small extent. Accordingly, in the functional state according to FIG. 2 the stopper plate 8 by the spring plate 7 in the direction 22 of the clamping feed movement of the spring plate 7 subjected to force.
  • Is in accordance with the conditions FIG. 2 the adjusting spindle 2 is acted upon by a sufficiently large force in the clamping direction of rotation 16, the adjusting spindle 2 rotates together with the spring plate 7 sitting thereon relative to the closing spring 18 in the clamping direction of rotation 16. The friction resistance is thereby to overcome, which is opposed due to the application of the spring plate 7 by the closing spring 18 of the rotational movement of the spring plate 7 in the clamping direction of rotation. Due to a corresponding dimensioning of the force exerted by the closing spring 18 along the housing axis 15 on the spring plate 7 force the spring plate 7 non-destructive slip on him acting on the end face of the closing spring 18 along.
  • If the bias of the closing spring 18, starting from the conditions according to FIG. 2 can be reduced, the adjusting spindle 2 is in the relaxation direction of rotation 17 to rotate about the spindle axis 13. For a corresponding rotational actuation of the adjusting spindle 2, an axial displacement of the spring plate 7 from the position according to FIG. 2 can cause to the right, the adjusting spindle 2 must rotate in the relaxation direction of rotation 17 relative to the spring plate 7. This is in the case of the arrangement according to FIG. 2 This ensures that the spring plate 7 due to the application of force by the closing spring 18 regardless of the rotational actuation of the adjusting spindle 2 in the relaxation direction of rotation 17 retains its rotational position relative to the door closer housing 13. The rotation of the adjusting spindle 2 in the relaxation direction of rotation 17 rotationally fixed arrangement of the spring plate 7 is achieved by the interaction of various factors.
  • Purposefully chosen are in detail
    • the amount of force exerted by the closing spring 18 along the spring axis 19 on the spring plate 7,
    • the radial distances r 1 , r 2 , r 3 ,
    • the friction coefficient between the closing spring 18 and the spring plate 7,
    • the friction coefficient between the spring plate 7 and the stop plate 8,
    • the friction coefficient between the adjusting external thread 5 of the adjusting spindle 2 and the adjusting internal thread 6 of the spring plate 7 and
    • the thread pitch of the adjusting external thread 5 of the adjusting spindle 2 and the adjusting internal thread 6 of the spring plate. 7
  • The friction torque between the closer spring 18 and the spring plate 7 is greater than the sum of the friction torque between the adjusting external thread 5 and the adjusting internal thread 6 and the "Anbackmoment" between the spring plate 7 and the stop plate 8. To the "starting torque" small to hold, the thread pitch of the threaded actuator 1 is relatively large. When selecting the thread pitch, it was noted that the threaded actuator 1 must be self-locking and the thread pitch of the threaded actuator 1 must therefore not exceed a certain upper limit. The upper limit of the thread pitch of the screw drive 1 in turn depends on the coefficient of friction between the adjusting external thread 5 on the adjusting spindle 2 and the adjusting internal thread 6 on the spring plate. 7
  • Due to the measures taken in the illustrated example case retains the spring plate 7 at a rotation of the adjusting spindle 2 in the relaxation direction of rotation 17 its rotational position about the spindle axis 3 both at the beginning and in the further course of the rotational operation of the adjusting spindle 2 maintains. At the beginning of the rotary actuation of the adjusting spindle 2, the "starting torque" is overcome, which is effective due to the static friction between the spring plate 7 on the Anschiagscheibe 8. In the further course of the rotational actuation of the adjusting spindle 2, the sliding friction occurring between the adjusting spindle 2 and the spring plate 7 is compensated for maintaining the rotational position of the spring plate 7.
  • All in all, due to the action of the closing spring 18 relative to the door closer housing 13 rotatable spring plate 7 moves due to the rotation of the adjusting spindle 2 in the relaxation direction of rotation 17 with a relaxation feed movement in the direction of an arrow 23 from the Schließerkolbenseitigen end position FIG. 2 in the housing-side end position according to FIG. 4 , In FIG. 3 is the spring plate 7 in an intermediate position between the Schließerkolbenseitigen end position and the housing-side end position.
  • In the housing-side end position according to FIG. 4 applied to the spring plate 7 provided on the adjusting spindle 2 and acting as a housing-side end stop outer collar 9 in the direction 23 of the relaxation feed movement. In addition, the spring plate 7 is supported along the housing axis 15 on the housing cover 14 of the door closer housing 13. The bias of the shutter spring 18 has in the in FIG. 4 illustrated functional state of the screw drive 1 the lowest possible value.
  • Is in accordance with the conditions FIG. 4 the adjusting spindle 2 is acted upon by a large force in the relaxation direction of rotation 17, then the adjusting spindle 2 rotates in the relaxation direction of rotation 17 and takes the spring plate 7 in the direction of rotation. The turntable 7 slips non-destructive at the end face of the closing spring 18 acting on it and also on the housing cover 14 acted upon by it.
  • If the spring plate 7 from the housing-side end position according to FIG. 4 in the direction of the closing piston side end position according to FIG. 2 be moved back, so the adjusting spindle 2 is to be actuated by means of the actuating tool in the clamping direction of rotation 16. As a result of the application of force by the closing spring 18, the spring plate 7 retains due to the above FIG. 2 explained measures regardless of the rotation of the adjusting spindle 2 in the relaxation direction of rotation 17 its rotational position about the spindle axis 3 at. As a result, the spring plate 7 can be released from the outer collar 9 of the adjusting spindle 2 and then perform a clamping feed movement in the direction of the arrow 22.

Claims (11)

  1. Door closer
    • having a door closer housing (13) which has a cylindrical inner space (21), whose cylinder axis forms a housing axis (15) of the door closer housing (13) and which is delimited by means of an inner wall of the door closer housing (13), which wall extends parallel with the cylinder axis,
    • having a closer piston which is movably guided in the inner space (21) of the door closer housing (13) along the housing axis (15),
    • having a closer spring (18) which is constructed as a helical spring with a spring axis (19), which closer spring (18) is arranged in the inner space (21) of the door closer housing (13) between the closer piston and a spring abutment (7) which is spaced apart from the closer piston along the housing axis (15) with the spring axis (19) extending along the housing axis (15) and which closer spring (18)is supported, on the one hand, at the closer piston side and, on the other hand, directly on the spring abutment (7), with the spring abutment (7) being acted on by the closer spring (18) with force in the direction of the spring axis (19), and
    • having a threaded positioning drive (1) by means of which the spring abutment (7), with the pretensioning of the closer spring (18) being changed, can be positioned along the housing axis (15) relative to the closer piston and which comprises an actuation spindle (2) on which the spring abutment (7) is seated and which has a spindle axis (3) which extends along the housing axis (15) and which actuation spindle (2)is provided with an outer actuation thread (5) which meshes with an inner actuation thread (6) of the spring abutment (7),
    • wherein the actuation spindle (2) is supported on the door closer housing (13) in such a manner that it is rotatable about the spindle axis (3) and can be rotated about the spindle axis (3) relative to the spring abutment (7) in a tensioning rotation direction (16) and in a relaxation rotation direction counter to the tensioning rotation direction (16), and wherein the spring abutment (7), as a result of a rotation of the actuation spindle (2) which is carried out relative to the spring abutment (7) in the tensioning rotation direction (16) can be moved along the spindle axis (3) with a tensioning advance movement in the direction towards a closer-piston-side end position and in the closer-piston-side end position acts on a closer-piston-side end stop (8) in the direction (22) of the tensioning advance movement, and wherein the spring abutment (7), as a result of a rotation of the actuation spindle (2) which is carried out relative to the spring abutment (7) in the relaxation rotation direction (17), can be moved along the spindle axis (3) with a relaxation advance movement counter to the tensioning advance movement in the direction towards a housing-side end position and in the housing-side end position acts on a housing-side end stop (9), which is spaced apart from the closer-piston-side end stop (8) along the housing axis (15), in the direction (23) of the relaxation advance movement,
    • wherein the spring abutment (7) is constructed as a circular abutment disc which is concentric relative to the spindle axis (3) and the inner space (21) of the door closer housing (13) and whose diameter corresponds at a maximum to the diameter of the inner space (21) of the door closer housing (13), and
    • wherein, as a result of the application of force to the spring abutment (7) by the closer spring (18), the actuation spindle (2) can be rotated about the spindle axis (3) relative to the spring abutment (7) in the tensioning rotation direction (16) and in the relaxation rotation direction (17) and the spring abutment (7) can thereby be moved with a tensioning advance movement in the direction towards the closer-piston-side end position and with a relaxation advance movement out of the closer-piston-side end position in the direction towards the housing-side end position and with a relaxation advance movement in the direction towards the housing-side end position and with a tensioning advance movement out of the housing-side end position in the direction towards the closer-piston-side end position,
    characterised in that
    the actuation spindle (2) being rotated in the tensioning rotation direction (16) carries the spring abutment (7), which in the closer-piston-side end position acts on the closer-piston-side end stop (8) in the direction (22) of the tensioning advance movement, with a rotation movement which is carried out in the tensioning rotation direction (16) about the spindle axis (3) and in this instance relative to the inner wall of the door closer housing (13) and/or in that the actuation spindle (2) being rotated in the relaxation rotation direction (17) carries the spring abutment (7), which in the housing-side end position acts on the housing-side end stop (9) in the direction (23) of the relaxation advance movement, with a rotation movement which is carried out in the relaxation rotation direction (17) about the spindle axis (3) and in this instance relative to the inner wall of the door closer housing (13).
  2. Door closer according to the preceding claim, characterised in that the closer-piston-side end stop (8) and/or the housing-side end stop (9) is/are constructed as a stop plate.
  3. Door closer according to claim 2, characterised in that a circular stop disc which is concentric relative to the actuation spindle (2) is provided as a stop plate.
  4. Door closer according to any one of the preceding claims, characterised in that the value of the application of force to the spring abutment (7) by the closer spring (18) is selected in such a manner that as a result of the application of force to the spring abutment (7) by the closer spring (18), the actuation spindle (2) can be rotated about the spindle axis (3) relative to the spring abutment (7) in the tensioning rotation direction (16) and in the relaxation rotation direction (17) and the spring abutment (7) can thereby be moved with a tensioning advance movement in the direction towards the closer-piston-side end position and with a relaxation advance movement out of the closer-piston-side end position in the direction towards the housing-side end position as well as with a relaxation advance movement in the direction towards the housing-side end position and with a tensioning advance movement out of the housing-side end position in the direction towards the closer-piston-side end position.
  5. Door closer according to any one of the preceding claims, characterised in that the radial distance (r1) from the spindle axis (3) with which the closer spring (18) is supported on the spring abutment (7) is selected in such a manner that, as a result of the application of force to the spring abutment (7) by the closer spring (18), the actuation spindle (2) can be rotated about the spindle axis (3) relative to the spring abutment (7) in the tensioning rotation direction (16) and in the relaxation rotation direction (17) and the spring abutment (7) can thereby be moved with a tensioning advance movement in the direction towards the closer-piston-side end position and with a relaxation advance movement out of the closer-piston-side end position in the direction towards the housing-side end position as well as with a relaxation advance movement in the direction towards the housing-side end position and with a tensioning advance movement out of the housing-side end position in the direction towards the closer-piston-side end position.
  6. Door closer according to any one of the preceding claims, characterised in that the radial distance (r2) from the spindle axis (3) with which the spring abutment (7) in the closer-piston-side end position acts on the closer-piston-side end stop (8) in the direction (22) of the tensioning advance movement and/or the radial distance (r2) from the spindle axis (3) with which the spring abutment (7) in the housing-side end position acts on the housing-side end stop (9) in the direction (23) of the relaxation advance movement is selected in such a manner that, as a result of the application of force to the spring abutment (7) by the closer spring (18), the actuation spindle (2) can be rotated about the spindle axis (3) relative to the spring abutment (7) in the tensioning rotation direction (16) and in the relaxation rotation direction (17) and the spring abutment (7) can thereby be moved with a tensioning advance movement in the direction towards the closer-piston-side end position and with a relaxation advance movement out of the closer-piston-side end position in the direction towards the housing-side end position as well as with a relaxation advance movement in the direction towards the housing-side end position and with a tensioning advance movement out of the housing-side end position in the direction towards the closer-piston-side end position.
  7. Door closer according to any one of the preceding claims, characterised in that the radial distance (r3) from the spindle axis (3) with which the outer actuation thread (5) of the actuation spindle (2) and the inner actuation thread (6) of the spring abutment (7) are supported one on the other along the spindle axis (3) is selected in such a manner that, as a result of the application of force to the spring abutment (7) by the closer spring (18), the actuation spindle (2) can be rotated about the spindle axis (3) relative to the spring abutment (7) in the tensioning rotation direction (16) and in the relaxation rotation direction (17) and the spring abutment (7) can thereby be moved with a tensioning advance movement in the direction towards the closer-piston-side end position and with a relaxation advance movement out of the closer-piston-side end position in the direction towards the housing-side end position as well as with a relaxation advance movement in the direction towards the housing-side end position and with a tensioning advance movement out of the housing-side end-position in the direction towards the closer-piston-side end position.
  8. Door closer according to any one of the preceding claims, characterised in that the outer actuation thread (5) of the actuation spindle (2) and the inner actuation thread (6) of the spring abutment (7) have a thread pitch due to which the threaded positioning drive (1) is self-locking and which is further selected in such a manner that, as a result of the application of force to the spring abutment (7) by the closer spring (18), the actuation spindle (2) can be rotated about the spindle axis (3) relative to the spring abutment (7) in the tensioning rotation direction (16) and in the relaxation rotation direction (17) and the spring abutment (7) can thereby be moved with a tensioning advance movement in the direction towards the closer-piston-side end position and with a relaxation advance movement out of the closer-piston-side end position in the direction towards the housing-side end position as well as with a relaxation advance movement in the direction towards the housing-side end position and with a tensioning advance movement out of the housing-side end position in the direction towards the closer-piston-side end position.
  9. Door closer according to any one of the preceding claims, characterised in that the friction coefficient between the spring abutment (7) and the closer spring (18) which is supported on the spring abutment (7) is selected in such a manner that, as a result of the application of force to the spring abutment (7) by the closer spring (18), the actuation spindle (2) can be rotated about the spindle axis (3) relative to the spring abutment (7) in the tensioning rotation direction (16) and in the relaxation rotation direction (17) and the spring abutment (7) can thereby be moved with a tensioning advance movement in the direction towards the closer-piston-side end position and with a relaxation advance movement out of the closer-piston-side end position in the direction towards the housing-side end position as well as with a relaxation advance movement in the direction towards the housing-side end position and with a tensioning advance movement out of the housing-side end position in the direction towards the closer-piston-side end position.
  10. Door closer according to any one of the preceding claims, characterised in that the friction coefficient between the outer actuation thread (5) of the actuation spindle (2) and the inner actuation thread (6) of the spring abutment (7) is selected in such a manner that, as a result of the application of force to the spring abutment (7) by the closer spring (18), the actuation spindle (2) can be rotated about the spindle axis (3) relative to the spring abutment (7) in the tensioning rotation direction (16) and in the relaxation rotation direction (17) and the spring abutment (7) can thereby be moved with a tensioning advance movement in the direction towards the closer-piston-side end position and with a relaxation advance movement out of the closer-piston-side end position in the direction towards the housing-side end position as well as with a relaxation advance movement in the direction towards the housing-side end position and with a tensioning advance movement out of the housing-side end position in the direction towards the closer-piston-side end position.
  11. Door closer according to any one of the preceding claims, characterised in that the friction coefficient between the closer-piston-side end stop (8) and the spring abutment (7) which acts on the closer-piston-side end stop (8) in the direction (22) of the tensioning advance movement and/or the friction coefficient between the housing-side end stop (9) and the spring abutment (7) which acts on the housing-side end stop (9) in the direction (23) of the relaxation advance movement is selected in such a manner that, as a result of the application of force to the spring abutment (7) by the closer spring (18), the actuation spindle (2) can be rotated about the spindle axis (3) relative to the spring abutment (7) in the tensioning rotation direction (16) and in the relaxation rotation direction (17) and the spring abutment (7) can thereby be moved with a tensioning advance movement in the direction towards the closer-piston-side end position and with a relaxation advance movement out of the closer-piston-side end position in the direction towards the housing-side end position as well as with a relaxation advance movement in the direction towards the housing-side end position and with a tensioning advance movement out of the housing-side end position in the direction towards the closer-piston-side end position.
EP14161299.4A 2014-03-24 2014-03-24 Door closer Active EP2924216B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14161299.4A EP2924216B1 (en) 2014-03-24 2014-03-24 Door closer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14161299.4A EP2924216B1 (en) 2014-03-24 2014-03-24 Door closer

Publications (2)

Publication Number Publication Date
EP2924216A1 EP2924216A1 (en) 2015-09-30
EP2924216B1 true EP2924216B1 (en) 2017-05-03

Family

ID=50343689

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3224300A1 (en) 1982-06-29 1983-12-29 Geze Gmbh Door closers with adjustable closing
DE2535244C3 (en) 1975-08-07 1985-01-24 Geze Gmbh, 7250 Leonberg, De
EP0328917B1 (en) 1988-02-13 1990-11-28 Gretsch Unitas GmbH Baubeschläge Door closer
DE19513433A1 (en) 1995-04-08 1996-10-10 Geze Gmbh & Co Door closer for preferably revolving door, with energy accumulator
DE19524777B4 (en) 1995-07-07 2004-04-15 Geze Gmbh Door closer with adjustable preload of a closer spring
CA2320662C (en) 1999-10-15 2007-03-13 Schlage Lock Company Power adjustment size indicator for a door closer
DE102010030914A1 (en) 2010-07-05 2012-01-05 Geze Gmbh Drive for use in closure in leaf of door or window, has pin arranged at periphery of spring plate and displaced into receiving bore for intervention into groove of housing, and spring plate adjusted along setting spindle
DE102010017787A1 (en) 2010-07-07 2012-01-12 Dorma Gmbh + Co. Kg Door closer or door drive

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9203870U1 (en) * 1992-03-23 1992-09-10 Schmid, Paul, Rothrist, Ch
GB0124376D0 (en) * 2001-10-11 2001-11-28 Jebron Ltd Door Closer
DE102004061629A1 (en) * 2004-12-17 2006-07-06 Dorma Gmbh + Co. Kg Swing door drive

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2535244C3 (en) 1975-08-07 1985-01-24 Geze Gmbh, 7250 Leonberg, De
DE3224300A1 (en) 1982-06-29 1983-12-29 Geze Gmbh Door closers with adjustable closing
EP0328917B1 (en) 1988-02-13 1990-11-28 Gretsch Unitas GmbH Baubeschläge Door closer
DE19513433A1 (en) 1995-04-08 1996-10-10 Geze Gmbh & Co Door closer for preferably revolving door, with energy accumulator
DE19524777B4 (en) 1995-07-07 2004-04-15 Geze Gmbh Door closer with adjustable preload of a closer spring
CA2320662C (en) 1999-10-15 2007-03-13 Schlage Lock Company Power adjustment size indicator for a door closer
DE102010030914A1 (en) 2010-07-05 2012-01-05 Geze Gmbh Drive for use in closure in leaf of door or window, has pin arranged at periphery of spring plate and displaced into receiving bore for intervention into groove of housing, and spring plate adjusted along setting spindle
DE102010017787A1 (en) 2010-07-07 2012-01-12 Dorma Gmbh + Co. Kg Door closer or door drive

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