EP1133611A1 - Window lever with anti-jamming protection - Google Patents
Window lever with anti-jamming protectionInfo
- Publication number
- EP1133611A1 EP1133611A1 EP00958526A EP00958526A EP1133611A1 EP 1133611 A1 EP1133611 A1 EP 1133611A1 EP 00958526 A EP00958526 A EP 00958526A EP 00958526 A EP00958526 A EP 00958526A EP 1133611 A1 EP1133611 A1 EP 1133611A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spring
- drive
- window
- spring element
- cable
- 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
Links
- 230000000717 retained effect Effects 0.000 claims abstract description 4
- 210000000078 claw Anatomy 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000013016 damping Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 241001367035 Autographa nigrisigna Species 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 description 10
- 230000001105 regulatory effect Effects 0.000 description 10
- 230000035484 reaction time Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 230000036316 preload Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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
- E05F15/00—Power-operated mechanisms for wings
- E05F15/40—Safety devices, e.g. detection of obstructions or end positions
- E05F15/41—Detection by monitoring transmitted force or torque; Safety couplings with activation dependent upon torque or force, e.g. slip couplings
-
- 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
- E05F11/00—Man-operated mechanisms for operating wings, including those which also operate the fastening
- E05F11/38—Man-operated mechanisms for operating wings, including those which also operate the fastening for sliding windows, e.g. vehicle windows, to be opened or closed by vertical movement
- E05F11/44—Man-operated mechanisms for operating wings, including those which also operate the fastening for sliding windows, e.g. vehicle windows, to be opened or closed by vertical movement operated by one or more lifting arms
- E05F11/445—Man-operated mechanisms for operating wings, including those which also operate the fastening for sliding windows, e.g. vehicle windows, to be opened or closed by vertical movement operated by one or more lifting arms for vehicle windows
-
- 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
- E05F11/00—Man-operated mechanisms for operating wings, including those which also operate the fastening
- E05F11/38—Man-operated mechanisms for operating wings, including those which also operate the fastening for sliding windows, e.g. vehicle windows, to be opened or closed by vertical movement
- E05F11/48—Man-operated mechanisms for operating wings, including those which also operate the fastening for sliding windows, e.g. vehicle windows, to be opened or closed by vertical movement operated by cords or chains or other flexible elongated pulling elements, e.g. tapes
- E05F11/481—Man-operated mechanisms for operating wings, including those which also operate the fastening for sliding windows, e.g. vehicle windows, to be opened or closed by vertical movement operated by cords or chains or other flexible elongated pulling elements, e.g. tapes for vehicle windows
- E05F11/483—Man-operated mechanisms for operating wings, including those which also operate the fastening for sliding windows, e.g. vehicle windows, to be opened or closed by vertical movement operated by cords or chains or other flexible elongated pulling elements, e.g. tapes for vehicle windows by cables
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2201/00—Constructional elements; Accessories therefor
- E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefor
- E05Y2201/47—Springs
- E05Y2201/474—Compression springs
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2600/00—Mounting or coupling arrangements for elements provided for in this subclass
- E05Y2600/10—Adjustable
- E05Y2600/11—Adjustable by automatically acting means
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
- E05Y2900/53—Type of wing
- E05Y2900/55—Windows
Definitions
- the invention relates to a window lifter, in particular for motor vehicles, with a motor drive for lifting and lowering the window, which via gear components, such as. B. worm and worm wheel or gear, acts on a drive element and moves up and down interacting with the drive element interacting actuating means, and with a pinch protection for switching off and possibly reversing the drive when the disk hits an obstacle in the closing path .
- gear components such as. B. worm and worm wheel or gear
- window lifters for motor vehicles are known for example from DE 33 03 590 AI.
- the pinch protection serves to prevent dangerous situations, such as pinching a hand, a finger or the like body part between the window pane and the door frame of the motor vehicle.
- Window lifters with anti-trap protection must therefore meet strict test standards, which differ considerably, for example in Europe and the USA.
- a window lifter of the type mentioned is known from DE 196 18 853 Cl.
- the window lifter has at least one spring in the flow of force between the drive unit formed by the electric motor and gear and the window pane.
- the blocking force of the spring corresponds at most to the sum of the expected adjusting force and the permissible pinching force.
- the spring characteristic of the spring shows a degressive, in particular negative, course when the pretensioning force is exceeded, so that the spring allows a comparatively large travel of the drive unit when the pretensioning force is exceeded.
- a disadvantage of this interpretation of the Preload force is that in certain cases in which a higher effort is required to close the window, for example due to weather conditions or when moving to the closed position or the like, incorrect pinch detection easily occurs and the window regulator control reverses without a pinching situation.
- a cable window regulator is known from DE 69 309 807 T2.
- This document discloses a window lifter with a pinch protection for switching off and, if necessary, reversing the drive when the pane hits an obstacle in the closing path.
- a helical spring is arranged coaxially with the cable of the window lifter, the helical spring being supported at one end on a fixed plate and at the opposite end on an element which is capable of being removed from the rope by friction against it against the restoring force of the spring to be moved.
- the element is a tubular part that has a side foot that cooperates with a contact of an electrical switch. The switch is attached to a fixed support.
- the frictional resistance between the friction element and the rope can change over the operating time of the window lifter, in particular taking into account the possibly rough operating conditions, so that the response time of the known window lifter, which is too high per se, is not even reproducible or largely constant is.
- the closing force of the window drive when the window hits an obstacle must not exceed 100 N.
- a test specimen is clamped between the upper pane edge and the door frame.
- the test specimen consists of a spring, the spring constant of which ranges between 10 N / mm and 20 N / mm according to European requirements.
- control and regulating electronics for driving the window lifter must detect the obstacle and, if necessary, reverse the drive within a reaction time in which the window lifter has traveled a distance of approximately 10 mm.
- the reaction distance is reduced to just 5 mm. Meanwhile, even stricter requirements apply, especially in the USA.
- test spring should have a spring constant of 65 N / mm and that the closing force should not exceed 100 N. Accordingly, the control and regulating electronics of the drive must respond within a reaction distance of less than 1.5 mm. In order to meet this test criterion, one possibility is to increase the sensitivity of the control and regulating electronics, since one armature revolution of the drive motor currently used already performs a disk stroke of 2 mm. Another possibility is the use of a different motor with a higher transmission gear, which may result in the use of new control and regulating electronics can pull. Both solutions therefore lead to a redesign of the drive and thus to considerable costs.
- the object of the invention is to further develop a cable window regulator of the type mentioned in such a way that, while maintaining the current drive, stricter requirements for anti-trapping protection, such as, for example, the standards applicable in the USA or Europe, are met.
- a window lifter of the type mentioned at the outset in that play and a spring element acting between the drive and the drive element and having a substantially linear spring characteristic are provided between the drive, preferably between a transmission component of the drive, and the drive element.
- the spring element generates a pretension and the spring constant of the spring element is dimensioned such that at least part of a spring travel reserve is retained when the disk closes without an obstacle, which is at least partially used up with the obstacle during the disk closing movement.
- the value of the extension of the reaction distance and reaction time is in accordance with the value of the existing spring travel reserve, which can be, for example, 10 mm.
- the normal closing movement of the disc without an obstacle remains essentially unaffected, since the spring element is practically not stressed.
- the two known window regulators with negative spring characteristics avoided by the invention Since the spring force continues to increase due to the linear characteristic in the event of a pinch, weather-related stiffness of the window lifter or moving to the closed position are not recognized as a case of pinching.
- the invention makes it possible to use simple means to adjust existing controls for window regulators to different regulations for pinching detection.
- the spring element has a spring force which is greater than the displacement force resulting from the weight of the disk and the frictional forces occurring when the disk is displaced, and is preferably less than the tensile force exerted by the drive when the disk is closed. This ensures that the spring element remains in a relaxed or almost relaxed position when closing the disc, in the event that there is no obstacle in the closing path, so that the full spring reserve is available for extending the reaction time in the event of danger. Only when the pane engages in the seal of the door frame and reaches the upper end position, in extreme cases the spring element is compressed to the block, which additionally dampens the position of the pane and closes without play. End position detection of the closed position of the disk is also made possible here, since, for example, a characteristic course of the motor current can be measured on the drive.
- the spring constant D F of the spring element can be derived from the equation:
- D norm is the spring constant of a test specimen known from a test standard for pinch protection
- D total indicates the resulting spring constant which results when the test spring and spring element are connected in series.
- This equation describes the series connection of two springs, namely the spring element and the test spring. This ensures that the resulting spring constant D total can be selected in a range that is controllable for the current drive and its control and regulating electronics, for example between 10 N / mm and 20 N / mm.
- the spring element according to the invention can be used not only in a special window regulator, but in all window motor systems driven by an electric motor, be it single or multi-strand cable systems, rack systems, scissor window regulators or the like.
- the fastening means are designed as arms which can be pivoted directly or indirectly against the window pane and pivot against one another.
- the drive element is designed as a rotatably mounted cable drum and the actuating means as two cable strands of a cable connected to the cable drum.
- the drive drives the cable drum via a worm and a worm wheel
- the spring element between the worm wheel in particular a spoke of the worm wheel and the rope drum, in particular a claw of the rope drum, acts or is supported or is clamped between these parts.
- the play between the cable drum and the drive or worm wheel is taken out in the normal case of the disk closing movement without obstacle by the spring preload of the spring element.
- an inner adjustment path between the drive and the window movement is provided, so to speak.
- the spring element is designed as a helical compression spring or as a torsion spring or the like.
- a damping element for. B. a damper arranged.
- the damper can optionally also have a receptacle in which the spring element is held or guided. In this respect, additional measures for fixing the spring element are advantageously unnecessary.
- the cable does not have an outer shell.
- Such an outer shell is unnecessary in such cables for window regulators run straight between the deflection points.
- An example of such a window regulator is described in German patent application P 199 43 338.0, which is incorporated into the disclosure content of the present application by express reference.
- German patent application P 199 43 338.0 which is incorporated into the disclosure content of the present application by express reference.
- German patent application 198 36 705 Another possibility to solve the present problem with cable window regulators, which have a cable with an outer cover, is described in German patent application 198 36 705, which is expressly incorporated into the disclosure content of the present application.
- the spring element is accommodated in a housing for the drive or the cable drum. This ensures protected accommodation of the spring element, with dirt or the like external influences in motor vehicle operation cannot impair the functionality of the spring element even over long periods of time.
- FIG. 1 shows an embodiment of a cable window regulator with a rope strand guided in an eight shape
- Fig. 2 shows a first embodiment of the training
- FIG. 3 shows a second embodiment of the design and arrangement of a spring element between the drive and the cable drum
- Fig. 4 shows a schematic sectional view of the arrangement of worm wheel, cable drum, cable drum claw and damper of an embodiment of the cable window regulator according to the invention
- FIG. 5 shows an embodiment of a scissor window lifter
- the cable winch window 1 shown in FIG. 1 with anti-trap protection for motor vehicles has a drive 2 which sets a cable drum 9 in rotation for closing and opening a pane.
- the cable is wound around the cable drum 9 and guided in a figure of eight, so that two essentially parallel cable strands of the cable are moved up or down depending on the direction of rotation of the drive 2.
- the window pane is connected to the parallel cable strands via drivers which are optionally guided in guide rails.
- the drive 2 drives a worm wheel 3, for example via a worm, the worm wheel 3 and the cable drum 9 being coupled to one another with play, ie the worm wheel 3 or another gear component executes a relative movement, preferably a relative rotational movement, with respect to the cable drum 9 can.
- Spring element 7 arranged or clamped.
- the spring element 7 generates a preload between the drive 2 and the cable drum 9 and thus builds up a spring travel reserve.
- the spring element 7 is arranged between the worm wheel 3, preferably a spoke 4 of the worm wheel 3 and the cable drum 9, preferably a claw 6 of the cable drum 9.
- the spring element has a linear spring characteristic.
- the spring element 7 can be designed as a helical compression spring, which is preferably arranged in a receptacle of the damper 5, which is connected to the cable drum 9 or the claw 6 of the cable drum 9.
- the spring element 7 is designed as a torsion spring, which wraps around the axis 8 of the worm wheel in an arc and is resiliently supported with two V-shaped, essentially radially projecting spring legs between the claw 6 and the spoke 4. It goes without saying that the spring element 7 can also be arranged between other components of the drive 2 and the cable drum 9 independently of the special design shown in FIGS. 3, 4.
- the spring constant of the spring element 7 is dimensioned such that when the disk is closed without an obstacle occurring, at least part of a spring travel reserve is retained which is at least partially used up with the disk closing movement with an obstacle.
- This spring travel reserve serves to extend the reaction distance and thus the reaction time for detecting an obstacle in the closing travel of the disk. This makes it possible to use the same window lifter to meet both the European test standard for pinch protection and the currently much stricter US standards.
- a test spring the spring constant of which can vary between the values 10 N / mm and 20 N / mm, is clamped between the upper window edge and the door frame of a motor vehicle, the closing force of the window and thus the tensile force of the Drive 2 on the rope strand must not exceed a value of 100 N.
- the spring travel reserve can be up to 10 mm, so that there is a sufficient reaction path for the current control and regulating electronics of the drive 2 and thus the stricter requirements of 65 N / mm for the spring test rate from the USA are met.
- the spring constant for the spring element 7 the following equation is used for two springs connected in series:
- D total is the spring constant resulting from the series connection of two springs, D standard the test spring constant and D F the spring constant of the spring element 7.
- the lower permissible value for the spring constant D F of the spring element 7 is obtained by using the upper, manageable limit value of 20 N / mm for the current electronics for D total . This means that even the window lifter with control electronics for pinch protection designed according to the European test standards can meet the stricter requirements from the USA if the spring constant of the spring element has a value range between approximately 12 N / mm and 33 N / mm.
- the spring force of the spring element 7 should be such that it is greater than the displacement force resulting from the weight of the disk and the reaction forces occurring when the disk is displaced and less than the tensile force exerted by the drive 2 when the disk is closed. This ensures that the spring element 7 when closing the window without any obstacle in the closing path, apart from the area in which the window enters the seal of the door frame, is not or almost not compressed. Only when the window engages in the area of the seal of the door frame and reaches the upper end position, the spring element 7 is subjected to pressure by the drive-side tensile force and may change into the block position, so that a stop damping is also achieved.
- a characteristic curve of the motor current can be measured, so that end position detection of the closed position of the disk is made possible.
- the spring force of the spring element 7 is greater than the counterforce resulting from the disc and the frictional forces during an upward movement, the spring element 7 also causes the disc to close without play. After reaching the upper end position and a decay of the tensile force on the disc, the spring element 7 relaxes until the disc is pushed back into its starting position, ie into its closed position, by the then predominant spring force of the spring element 7.
- FIG. 5 shows a so-called scissor window lifter with two legs 10, 11 which can be pivoted relative to one another in the manner of a pair of scissors, the free ends of which act on the pane.
- a gear wheel 12 is provided as the drive element for initiating the pivoting movement, on which the drive of the window regulator acts.
Landscapes
- Power-Operated Mechanisms For Wings (AREA)
- Window Of Vehicle (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19945515 | 1999-09-23 | ||
DE19945515 | 1999-09-23 | ||
PCT/EP2000/008737 WO2001021919A1 (en) | 1999-09-23 | 2000-09-07 | Window lever with anti-jamming protection |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1133611A1 true EP1133611A1 (en) | 2001-09-19 |
EP1133611B1 EP1133611B1 (en) | 2003-04-09 |
Family
ID=7922965
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00958526A Expired - Lifetime EP1133611B1 (en) | 1999-09-23 | 2000-09-07 | Window lever with anti-jamming protection |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1133611B1 (en) |
DE (1) | DE50001697D1 (en) |
ES (1) | ES2194769T3 (en) |
WO (1) | WO2001021919A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020206542A1 (en) * | 2019-04-10 | 2020-10-15 | Magna Closures Inc. | Direct drive cable-operated actuation system for closure panel |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111535697A (en) * | 2020-05-11 | 2020-08-14 | 朱凤梅 | Motor protection device based on electromagnetic attraction and suspension limitation |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3303590A1 (en) | 1983-02-03 | 1984-08-09 | Küster & Co GmbH, 6332 Ehringshausen | Electromotively driven window lifter having a safety circuit |
FR2693568B1 (en) * | 1992-07-10 | 1994-09-30 | Rockwell Abs France | Safety device for electric vehicle openings, in particular window regulators and opening roofs, and an opening incorporating this device. |
DE19618853C1 (en) | 1996-05-10 | 1997-08-14 | Brose Fahrzeugteile | Motorised window drive with electronic anti-jamming protection e.g. for motor vehicles |
-
2000
- 2000-09-07 ES ES00958526T patent/ES2194769T3/en not_active Expired - Lifetime
- 2000-09-07 DE DE50001697T patent/DE50001697D1/en not_active Expired - Lifetime
- 2000-09-07 EP EP00958526A patent/EP1133611B1/en not_active Expired - Lifetime
- 2000-09-07 WO PCT/EP2000/008737 patent/WO2001021919A1/en active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO0121919A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020206542A1 (en) * | 2019-04-10 | 2020-10-15 | Magna Closures Inc. | Direct drive cable-operated actuation system for closure panel |
Also Published As
Publication number | Publication date |
---|---|
ES2194769T3 (en) | 2003-12-01 |
DE50001697D1 (en) | 2003-05-15 |
EP1133611B1 (en) | 2003-04-09 |
WO2001021919A1 (en) | 2001-03-29 |
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