Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
  • H01F7/00—Magnets
  • H01F7/02—Permanent magnets [PM]
  • H01F7/0231—Magnetic circuits with PM for power or force generation
  • H01F7/0252—PM holding devices
  • H01F7/0263—Closures, bags, bands, engagement devices with male and female parts
• • A—HUMAN NECESSITIES
  • A45—HAND OR TRAVELLING ARTICLES
  • A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
  • A45C13/00—Details; Accessories
  • A45C13/10—Arrangement of fasteners
  • A45C13/1069—Arrangement of fasteners magnetic
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T24/00—Buckles, buttons, clasps, etc.
  • Y10T24/32—Buckles, buttons, clasps, etc. having magnetic fastener
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T292/00—Closure fasteners
  • Y10T292/11—Magnetic
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T70/00—Locks
  • Y10T70/50—Special application
  • Y10T70/5093—For closures
  • Y10T70/554—Cover, lid, cap, encasing shield
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T70/00—Locks
  • Y10T70/50—Special application
  • Y10T70/5093—For closures
  • Y10T70/554—Cover, lid, cap, encasing shield
  • Y10T70/5544—Pivoted
  • Y10T70/5549—Cover-carried lock

Definitions

• the invention relates to a mechanical-magnetic connection construction, d. H. a mechanical lock that closes by means of magnetic force support and is used in particular as a closure on bags, rucksacks and similar items, this list is not intended to limit the scope of the invention.
• a connection construction is described in the document WO 2008/006357.
• This magnetic closure consists of a two-part magnet system, so that the two closure halves tighten and mechanically lock each other from a predetermined minimum distance.
• the magnetic force presses a locking piece against a resilient and thus evasive locking element.
• the locking piece and the resilient locking element overlap or undercut in the latched state.
• the locking piece is moved relative to the locking element until a disengaged position is reached, in which the two elements are no longer engaged, d. H. the mechanical lock releases.
• the magnet system is simultaneously brought into a position in which the magnetic attraction force is either considerably weakened, or a repulsive force is applied, which opens the closure.
• the magnetic system contributes only insignificantly to the stability and strength of the closure, but only serves to make the closure close and open haptically.
• the load capacity of the closure is determined by the mechanical interlock and depends essentially on how large the overlap area or the undercut surface of the interlock is. The larger the overlapping area or the undercut area, the greater the mechanical stability of the locking mechanism. when all components of the closure are adequately constructed. For several reasons, the possibilities of making the overlapping area or the undercut area as large as possible are limited, which is explained below:
• a closure with a larger diameter can, for. B. be undesirable on a handbag.
• the magnetic force in the close range ie in the snapped state is higher than needed. This in turn requires a higher force when opening, but what z. B. is undesirable in handbags, as these closures should have a pleasantly soft feel. It is the object of the invention to improve a generic mechanical-magnetic connection construction for releasably connecting a first element to a second element so that its clamping force is increased without increasing the mechanical locking elements and the magnets.
• connection structure comprising a module A fixedly connected to said first element or rotatably arranged in said first element and comprising a module B fixedly connected to said second element. is arranged rotatably or in the second element.
• the module A is rotatably guided in module B.
• module A at least one magnet and in module B at least one armature or second magnet is arranged.
• the shape, location and polarity of the magnets or magnet and armature are such that upon rotation of module A 51 relative to module B 52, the magnets or magnet and armature will move from a maximum magnetic attraction closed position can reach an open position with weakened magnetic attraction.
• a magnetic repulsion between module A and module B is formed. Furthermore, a positive locking is provided which exists between two engagement sections on the module A and module B, d. H. When the modules are pulled together by the magnetic force, the two engagement portions come into operative connection and lock.
• the engagement portion which is arranged on the module B on a Federver- locking element, formed helically and the mating engagement portion on the module A is also formed helical.
• Module A and module B close without rotation in such a way that the screw-shaped engagement section is positively locked by means of the magnetic attraction with the helical engagement section.
• Module A and module B are to be opened such that upon rotation of the modules and the concomitant rotation of the magnets from the closed position into the open position, the helical engagement sections are screwed out of engagement.
• the use of helical engagement portions allows for a significant increase in the undercut or overlap area of the engaged elements.
• the helical spring engaging portion consists of separate segments. Since the resilient elements are each individually smaller than comparable constructions of the prior art, they can also be structurally designed differently than large spring elements. In particular, it is possible to use elastic materials. In addition, the use of multiple independent segments provides high reliability, even if one segment should fail.
• the helical engaging portion of spaced, resilient pins which are arranged on a helical line side by side and having similar advantages as those mentioned for claim 3.
• FIGS. 1a-c show a comparative example from the prior art with the aid of which the invention is explained.
• Figs. 2a-d show the invention in different views.
• Fig. 3a, 3b show a comparison of the invention with the prior art.
• Figures 4a, 4b show a comparison of the invention with the prior art.
• FIGS 5a-5c show the functional details of the opening process.
• FIGS. 6a-6b show a further embodiment of the invention.
• Fig. 6c shows a specific application of the invention.
• Fig. 1 shows the essential functional elements of a magnetic closure according to the prior art according to the document WO 2008/006357, which is hereby incorporated into the present application.
• An operating part 70 equipped with magnets is inserted into the lower part 71 in the direction of the arrow.
• a spring locking element 9 with spring locking pieces 9a, 9a 'is arranged in the lower part 71.
• the actuating part 70 has locking pieces 5 and 5' and release gaps 6 and 6 ', on, wherein 6' is not visible in this figure.
• the actuating member 70 rotates by magnetic force in the position shown in which attract the recognizable in Fig. 1b magnets.
• the two locking pieces press 5 and 5 'on the spring locking pieces 9a, 9a' until the shutter snaps.
• the actuating member 70 is rotated in the direction of the arrow to the left or right until the spring locking pieces 9a, 9a 'in the Freigabelü- bridges 6 and 6' are.
• a rotation of the magnets takes place at the same time to each other, which then get into a repulsion position, so that the shutter pops up by itself.
• Fig. 1b shows the closure according to the prior art in the moment in which the spring locking pieces 9a, 9a 'with the locking pieces 5 and 5' have contact.
• the spring locking pieces 9a, 9a ' are not yet pushed aside in the radial direction Y by a predetermined distance, and the magnets face each other at a distance X.
• 1c shows in plan view the spring locking pieces 9a, 9a ', which are locked behind the locking pieces 5 and 5'.
• the hatched undercut surfaces 50, 51 can be seen. It can be seen that in this prior art, the width of the spring locking pieces 9a, 9a 'can not be widened, if it should be ensured that the closure at a rotation between 100 -130 ° is at least partially poled to repulsion. Thus, the undercut area can not be increased.
• FIGS. 2a-d show a closure according to the invention according to PA1.
• the module A (51) are magnets 4a, b, which can be rotated to the magnets 8a, b in the module B (52) from a closed position with maximum magnetic attraction in an open position with magnetic repulsion.
• Fig. 2a, b are the helically rising locking pieces with 5, 5 ', 5 "and the spring locking pieces with 9a, 9a', 9a" designated.
• the locking pieces and the spring locking elements are bevelled on the sides that meet on closing, so that when closing the spring locking element is pushed aside. After locking, the closure can be released by unscrewing module A and module B.
• FIG. 2 d shows a plan view of the closure with contour lines of the hidden lines.
• the undercut surface 50, 50 ', 50 is hatched It can be seen that each spring locking element can be approximately 120 ° angular width and thus cover the three spring locking elements approximately 360 °, whereby the undercut surface can be made substantially larger, which is explained below:
• Fig 3a the invention is compared with the prior art 3b. It will be appreciated that the undercut area resulting from the three surfaces 50, 50 'and 50 "is evidently already significantly larger than the undercut area in Figure 3b resulting from the surfaces 50 and 50'.
• FIGS. 4a, 4b The distances X of the magnets in the prior art 4b and the closure 4a according to the invention are now compared in FIGS. 4a, 4b. It can be seen that in the invention, the distance X between the magnets 4a, b and 8a, b is substantially smaller than in the prior art of Fig. 4b. The cause is the low undercut depth 60.
• FIGS. 5a to 5c show the functional details of the opening process:
• 5a shows the technical non-real representation, in which it can be seen that when opening the tapered sides of the locking piece and spring locking element collide.
• this collision can produce two different effects:
• Fig 5b is shown how open at a relatively hard elasticity and / or a weak magnet upper and lower part of the closure following the thread.
• Fig. 5c it is shown how with relatively soft spring locking elements and / or strong magnets, the spring locking elements are pushed aside during opening and so the positive connection is canceled prematurely.
• the module A is firmly connected to a first element and at the same time the module B is firmly connected to a second element and to open the first and second elements are rotated against each other.
• a permanently connected to a mobile phone module A can be removed by turning the phone from a holder rotate, the module B is firmly connected to the holder.
• the module A is rotatably arranged in a second element and the module B is fixedly connected to a second element.
• the module A can be rotatably arranged in the pocket cover via a hand rotary handle and the module B be firmly connected to the lower part of the bag.
• Figure 6c wherein the reference numeral 103, the first element, 106, the module A, 104, the second element and 105, the module B).
• module A and module B both rotatably in each case in a first and a second module. Then module A and module B are rotated by one operating handle against each other. This is particularly useful if the position of the operating handles should not be determined from the outset for an object accessible from all sides.
• the closure has a tendency to unscrew under load. Therefore, magnet systems must be used which cause a return torque in the closed position at maximum attraction, such. As a rectangular magnet and a rectangular armature or a second magnet. Furthermore, the thread geometry and the friction between the locking piece and the spring locking element must be taken into account.
• An advantageous development according to claim 5 benefits precisely this tendency that the screw has the effort to unscrew under load by itself for an automatic emergency release from a certain load.
• the helical engagement sections have such a strong thread pitch that opens when automatically exceeding a certain load, the shutter.
• FIGS. 13-15 show an exemplary embodiment of such a development of the invention according to PA5, in each case in side view and sectional view in three different movement phases.
• the thread pitch of the helical engaging portions (5, 5 ', 9a, 9a') and the shape, position, polarity and strength of the magnets (4a, 4b, 8a, 8b) in module A (51) and module B ( 52) is selected so that when exceeding a predetermined load FL, the shutter opens.
• FIGS. 13-15 show a closure consisting of plug 51 with eyelet 51b to which, for example, a cable is fastened.
• An application of the invention to PA5 is an emergency release between a kite and a harness strapped to a person surfing on a surfboard, where an emergency release is required above a certain tensile load of approximately 80kg, In case of a fall the dragons can not pull the person underwater and the person drowns.
• FIG. 13 shows the closing phase in which, by means of the magnetic force of the opposing magnets 4a, 4b and 8a, 8b, the helical engagement sections 5, 5 'and 9a, 9a' engage on plug 51 and spring ring 9.
• FIG. 14 shows the lock after locking.
• FIG. 15 shows how the plug 51 was turned out of the housing 52 a little way by the acting load FL.
• the spring ring must be held against rotation by a suitable design measure, z. B. a projection on the housing 52 which engages in the opening slot in the spring ring 9
• the emergency unlocking function will be explained in more detail below with reference to FIGS. 16 and 17.
• magnets or magnet and armature are arranged in module A and module B such that, when module A is rotated relative to module B, they are weakened or counterpoled in their reciprocal attraction.
• a force dependent on the shape, position, polarity and magnetic force of the magnets is necessary. This force can change depending on the shape, location, polarity of the magnets with increasing rotation. It is assumed for the sake of simplification of the consideration that in the initial range of rotation approximately a constant initial torque FM TO is overcome.
• the initial torque in a magnet system is shown by four magnets 4a, 4b and 8a, 8b which are rotated from a mutual attraction position to a position of at least partial repulsion.
• Decisive for the operation of the emergency unlocking is mainly this initial torque, since after a partial successful screwing opening so the magnets are separated a piece and lose both in their attractive effect as fasting effect quickly losing strength.
• FIG. 17 shows the embodiment in the rest position (right) and partially screwed open position (left). If no magnets were arranged in the plug 51 and housing 52, a loading force F L would unscrew the plug screw, if one neglects a friction between the plug and spring ring in the threads.
• the load FL causes a torque F 0 . The steeper the thread, the greater is this torque, ie the easier it is for the plug to turn out of the housing in a screwing manner under load.
• the initial magnetic torque F M equal to the resulting torque FD be selected when exceeding the load FL, ie the thread pitch and shape, position, polarity and strength of the magnets must be selected according to the application.
• FIG. 6a shows a locking device in a perspective view, wherein only the rotary member and the spring locking element are shown.
• the ring-shaped spring locking element 9 is further developed in this case such that the helical spring locking piece 9a is split by interruptions into a plurality of segments 9ai... 9a ⁇ .
• the advantages of this development are the combination of the high undercut surface with a very soft spring constant of the spring locking element, which allows a very easy snapping, but the latch remains stable.
• the soft spring constant of the spring locking element 9 designed as a ring is formed by the interruptions between the segments 9a1... 9a8, since in each case a slight deformation in the desired direction is possible there.
• a juxtaposition of resilient pins in the form of a helical line according to claim 4 is functionally the same effect.
• 6c shows a magnetic-mechanical connection device, in which the coupling element 106, depending on the rotation, either comes into attraction to the lower part 102 or in attraction to the upper part 105, wherein it is rotated by means of a winch 101.
• the dividing line 107 separates the parts of the upper assembly from those of the lower assembly.
• This application of the invention may, for. B. as a coupling device between a trolley and a bag standing thereon be used, it is important that when putting the bag on the trolley, the coupling elements find themselves safe by the magnetic attraction and engage and after removing the bag, the coupling elements are withdrawn, so they see when depositing the bag on the floor not be damaged.
• the present invention is especially stable connection of the two assemblies is determined by the form-fit connection of the spring the locking member 9 described above with the manner of segments divided, coil-Federverriege- lung pieces 9 ai ... 9a 8 and reaches the rotary member 106 with the helically rising locking pieces 5, 5 '.
• FIGS. 7 and 8 show an embodiment according to the invention as claimed in claim 1.
• the spring locking element is designed as a spring ring 9 with the helical engagement portions 9a and 9a '.
• the spring ring is held in the housing 52.
• the plug 51 with attachment eye 51b can be plugged into the housing and rotated in the housing.
• two rectangular magnets 4 and 8 are arranged.
• the rectangles In the closed state according to FIG. 7, the rectangles completely overlap, there is maximum attraction. After an actuation, a rotation by 90 °, according to FIG. 8, the rectangles only partially overlap. The magnetic attraction has thus been weakened and this required a force that has overcome the magnetic return torque FD.
• the actuated state according to FIG.
• the thread has been disengaged by a rotation through 90 °.
• the skilled person will appreciate that the magnet system and the number and angular width of the threads must be coordinated. In the present example, 4 threads a 90 ° angular width would be structurally possible for a maximum tumbler. Drawn, however, are only two threads a 90 °. Here then the undercut area is correspondingly smaller.
• the spring ring must be held against rotation by a suitable design measure, z. B. a projection on the housing 52 which engages in the opening slot in the spring ring 9
• FIG. 12 shows a perspective exploded view of the most important individual parts.
• the housing 52 two magnets 4a and 4b are arranged.
• the plug 51 two magnets 8a and 8b are arranged.
• the spring locking element 9 is mounted.
• the plug helical engaging portions 9a, 9a 'and 5,5' on the conical surfaces 161, 162 are arranged.
• FIG. 9 shows a sectional view of the closure in the closed state, in which the helical engagement sections 9a, 9a 'and 5, 5' are locked into one another and offer maximum undercut area and thus maximum closure load capacity.
• FIG. 10 shows a sectional view of the point at which the plug and the housing are spaced apart by the distance x and the helical engagement sections have first contact.
• the magnetic force must now be greater than the spring force of the spring locking element 9, which is now pushed aside laterally by the chamfers on the engaging portions.
• the present embodiment offers the advantage that a plurality of engagement portions can latch over each other and thus provide a large undercut surface, although the distance x is minimally small.
• this embodiment has a particularly good ratio of mechanical strength and magnet size and can be made particularly inexpensive.
• FIG. 11 shows the position of the section A-A in FIG. 9 and FIG. 10.

Landscapes

• Physics & Mathematics (AREA)
• Electromagnetism (AREA)
• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Buckles (AREA)
• Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
• Connector Housings Or Holding Contact Members (AREA)
• Pivots And Pivotal Connections (AREA)
• Details Of Connecting Devices For Male And Female Coupling (AREA)
• Hard Magnetic Materials (AREA)
• Iron Core Of Rotating Electric Machines (AREA)
• Lock And Its Accessories (AREA)

Applications Claiming Priority (2)

Publications (3)

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Cited By (1)

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• 2008
  • 2008-04-15 DE DE102008019063A patent/DE102008019063B4/de not_active Expired - Fee Related
• 2009
  • 2009-04-15 EP EP09733323A patent/EP2271233B8/fr active Active
  • 2009-04-15 US US12/936,772 patent/US8495803B2/en active Active
  • 2009-04-15 AT AT09733323T patent/ATE552745T1/de active
  • 2009-04-15 CN CN2009801133277A patent/CN102036578B/zh active Active
  • 2009-04-15 WO PCT/DE2009/000483 patent/WO2009127196A2/fr not_active Ceased

Non-Patent Citations (1)

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