WO2011130762A1

WO2011130762A1 - Device for connecting two parts in a pivotable manner

Info

Publication number: WO2011130762A1
Application number: PCT/AT2011/000196
Authority: WO
Inventors: Moritz Muhrhofer
Original assignee: Moritz Muhrhofer
Priority date: 2010-04-21
Filing date: 2011-04-20
Publication date: 2011-10-27
Also published as: AT509601B1; AT509601A4

Abstract

Device (1) for connecting two parts in a pivotable manner, having a connecting element (2), which can be fastened on the one part and can be connected to a further connecting element (3), which can be fastened on the other part, wherein the connecting elements (2, 3), in the connected state, are arranged such that they can be pivoted in relation to one another about a common pivot axis running along their connecting region (5), and at least one magnet (6, 7, 9, 10) is provided on the connecting element (2), in the connecting region, for the purpose of releasable connection to a corresponding magnet (6, 7, 9, 10) on the further connecting element (3).

Description

Device for the pivotable connection of two parts

The present invention relates to a device for the pivotable connection of two parts, with a fastened to one part connecting element, which is connectable with a fastened to the other part further connection element, wherein the connection elements in the connected state about a common, in their connection area extending pivot axis are arranged mutually pivotable.

Such devices are known in the art in various designs. For the movable connection of two components on a common edge hinges are usually used; These may consist of two mutually pivotable about a common pivot axis tabs, which are each attached to one of the components. The pivot axis is formed by a hinge pin which is inserted into corresponding sockets of the hinge plates; i.e. Bolt and socket are positively connected to form the hinge joint.

Known devices with which two components can be connected to one another in an articulated manner have the disadvantage that they are dependent on mechanically heavily stressed rotary axes whose susceptibility to wear impairs a permanently reliable function. In addition, these devices can be disassembled only with considerable effort, what the assembly or a

Reuse made difficult.

The aim of the present invention is in contrast to provide a structurally simple, wear-free as possible and low-maintenance device of the type mentioned, which is quickly and easily dismantled.

This is achieved in the device of the initially mentioned type in that at least one magnet is provided on the connection element in the connection region, which is provided for a releasable connection with a corresponding magnet of the further connection element.

According to the invention, therefore, cooperating magnets are provided in the connection area in order to release the connection elements. to fix with each other bar; that is, in the connected state, the connection elements are non-positively connected to each other via the magnetic force. The magnetic connection is characterized by low wear, whereby the life of the connecting elements can be significantly increased. By making the movable connection via the non-contact magnetic force between magnets on the connecting elements, the device can, if necessary, be disassembled quickly and easily, preferably without tools. The force required to release the connection can be adjusted via the field strength of the magnets used. With the device according to the invention, therefore, in particular, the formation of a predetermined breaking point between two parts is possible, wherein the release force required for the separation of the parts is adjustable by selecting suitable magnets. To connect the connection elements can be used on the one hand rigid, axis-shaped magnets; In some cases, however, it may be beneficial if deformable or flexible magnetic inserts are provided. Depending on the field of application, a combination of rigid and / or flexible magnets may also be provided on one connecting part with rigid and / or flexible magnets on the other connecting part. The magnets can be elongated or curved.

With regard to an expedient embodiment, it is advantageous if at least one magnet polarized along a plane extending essentially in the direction of the pivot axis is connected to the further connection at one connecting element and at least one further magnet which is polarized along a plane extending essentially in the direction of the pivot axis Element is provided, wherein opposite poles of the magnets are facing each other. Accordingly, axially polarized magnets are arranged in the connection region. To obtain an attractive force between the magnets, opposite poles of the magnets are aligned with each other. Preferably, a plurality of such magnets may be arranged in the manner of a zipper in the connecting region, wherein the axis of rotation corresponds in particular to an axis of symmetry of the magnets in the connected state. With regard to a low-wear embodiment, it is advantageous if at least one magnet is non-rotatably connected to the one connecting element and at least one further magnet rotatably connected to the further connecting element.

In a preferred embodiment of the invention it is provided that the magnets to achieve a resilient arrangement of the connecting elements are pivotable about the pivot axis from an unloaded position to a loaded position in which a magnetic force acts as a restoring force. At a relative pivoting of the magnets from their unloaded

Rest position, a magnetic restoring or torsional torque is built up, which counteracts the pivoting. Accordingly, a resilient mounting around the rest position without mechanical means, such as springs or the like. , be achieved.

A resilient arrangement around the unloaded rest position can be achieved in a structurally simple manner if a magnet polarized along a plane extending substantially perpendicular to the pivot axis is magnetized on one connecting element and another magnet polarized along a plane extending substantially perpendicular to the pivot axis is on the other connecting element. Element is provided, wherein in the unloaded position opposite poles of the magnets are facing. The along a substantially perpendicular to the pivot axis extending plane or diametrically polarized magnets are arranged in the connecting region along the pivot axis, wherein faces of cooperating magnets facing each other. In the unloaded position, segments of the end faces meet each other with opposite poles. In a position pivoted relative to the unloaded position, mutually facing segments of the magnetic end faces overlap with poles of the same name, whereby a repulsive magnetic force is created which causes a return torque. Advantageously, the along a plane extending substantially perpendicular to the pivot axis plane or diametrically polarized magnets are each rotatably mounted on their connection elements.

An advantageous combination of a releasable connection with a resilient mounting of the connection elements relative to loaded rest position is enabled if to achieve a. ner releasable and resilient arrangement of the connecting elements about the pivot axis of the connecting elements on the one hand cooperating along a substantially in the direction of the pivot axis extending plane polarized magnets and on the other hand cooperating along a substantially perpendicular to the pivot axis extending plane polarized magnets are provided.

A mechanically particularly simple embodiment can be achieved if the pivot axis extends in the connected state of the magnets in a contact surface of the connecting elements. Accordingly, the connection elements can around the pivot axis extending at their connection or contact surface

be pivoted, depending on the design of the magnets an attractive and possibly resilient arrangement is achieved by its unloaded position. The magnets can be included in recordings of separate connection elements. In many cases, however, it is favorable if the magnets meet directly. When using rod-shaped magnets, the magnets roll off each other when they are pivoted about the pivot axis extending at their connection or contact surface. For attachment to the parts to be joined separate connection elements may be provided, which may alternatively be formed by the magnets themselves, which are attached via an adhesive bond, etc. to the individual parts.

With regard to a convenient attachment of the connecting device to any parts or components, it is advantageous if hinge tabs are provided as connecting elements, wherein the magnets are accommodated in corresponding, arranged substantially along the pivot axis of the connecting elements , On the one hand, rigid plates can be provided as hinge straps; For some applications, for example in sports technology, flexible tabs can be provided, which is particularly useful for a pivotable connection of non-planar mounting surfaces.

In terms of a durable, structurally simple connection Of parts, it is advantageous if, for forming a hinge in the manner of a door hinge, a connecting element, which preferably has a along a perpendicular to the pivot axis duri fenden plane polarized magnet, a central, extending in the direction of the pivot axis recess for receiving the other connection -Elements, which preferably has a along a plane perpendicular to the pivot axis Ebe ne polarized magnet. Preferably, the Aufnah me a connecting element is designed as an inner cavity of a particular diametrically polarized magnet, in which a corresponding magnet of the other connecting element is inserted.

With regard to a cost-effective production using commercially available components, it is advantageous if at least one permanent magnet, in particular Stabmägnet, is provided. Depending on the desired function, on the one hand bar magnets can be used, which are substantially axially polarized, i. are polarisier in the connected state of the device along a plane extending substantially in the direction of the pivot axis. On the other hand diametrically polarized magnets can be used to achieve a resilient arrangement to an unloaded te rest position on the other hand, magnets which are polarized along a plane extending substantially perpendicular to the pivot axis. These consist of two halves each having a semicircular cross section with unlike poles. In an expedient embodiment, at least two, preferably at least four, cylindrical bar magnets are arranged along the pivot axis in the connection region. There are also other designs of permanent magnets conceivable, beispielswei se cuboid or spherical magnets or bar magnets with hemispherical finishes.

In some cases, in particular if the field strength of the magnets is to be selectively adjustable, it may be advantageous if at least one electromagnet is provided.

In order to determine the instantaneous relative position of the connecting elements to each other, it is advantageous if the electromagnet is connected to a rotary position sensor. The rotary position In conjunction with the electromagnets, the encoder can determine the instantaneous angular position of the connection elements from a measured restoring torque or an associated variable.

In order to limit the pivot angle at a pivoting of the connecting elements to a maximum value, it is advantageous if a stop is provided.

The device according to the invention can be used in very different fields. In particular, a structurally simple, easy to disassemble tool for

Will be provided. For this purpose, it is advantageous if cooperating tool parts, in particular gripper elements, are provided as connectable parts, which have impact sites facing one another at their one end regions. Depending on the desired function cutting surfaces, structured gripping surfaces, etc. may be provided as facing active sites. The cohesion of the tool parts or gripping elements is accomplished by the arranged in their connection area magnets. For uncomplicated loosening of the tool parts, for example, for cleaning purposes, it is particularly advantageous if the particular rod-shaped magnets themselves are formed as connecting elements, at the contact surface in the connected state of the magnets, the pivot axis extends, about which the gripping elements are arranged pivotably.

To achieve a cost-effective, convenient gripper, it is advantageous if mussel half-shells or legs are provided in the manner of a pair of pliers as cooperating gripping elements. Accordingly, on the one hand a collapsible mussel gripper can be made available by having two shell shells at facing points interconnected magnets. In particular, a resilient arrangement of the magnets is favorable to an unloaded position, with which it is ensured that the shell shells are normally spaced apart on the opposite side of the connection region. In use, the clam shells may be approximated by the user for grasping an item (eg, the contents of a fresh clam freshly opened for consumption) by the user. The same applies to one Training of the tool parts as a pliers, in which the cooperating magnets of the manual force of a user can counteract a spring action to one of conventional

Allow tools with spring elements known handling.

The invention will be explained below with reference to preferred embodiments shown in the drawings, to which, however, it should not be limited. In detail, in the drawing:

1a is a perspective view of a device for the pivotable connection of two parts according to a first embodiment of the invention, being provided to achieve a releasable connection cooperating axially polarized bar magnets in the connection region of two connecting elements shown in the non-assembled state;

Fig. Lb is an enlarged view of the bar magnets of Fig. La;

Fig. 2a is a perspective view of an alternative embodiment of the invention, in which the connection elements shown in the non-connected state are arranged resiliently about an unloaded rest position.

FIG. 2b shows a perspective view of the bar magnets for the device according to FIG. 2a; FIG.

FIG. 2c shows a view of an alternative arrangement of the magnets in the connection area; FIG.

FIG. 2d is a view of a modification modified from FIG. 2c; FIG.

FIG. 2e or FIG. 2f shows a view of the magnet arrangement according to FIG. 2c in an unloaded or in a loaded position; FIG.

2g and 2h each show a view of an alternative arrangement of magnets in the connection area; Fig. 3 is a perspective view of an embodiment of the invention providing a hinge in the manner of a door hinge;

FIG. 4 is a perspective view of a gripper formed by clam shells; FIG. and

Fig. 5 is a perspective view of a grasping forceps whose legs are connected to the magnetic connection according to the invention.

Fig. La shows a device 1 for pivotal connection of two (not shown in the figures) parts, such as in particular doors, windows, (valve) flaps, closures, panels or the like. For this purpose, the device 1 at one Part attachable connection element 2, which can be connected to a fastenable to the other part further connection element 3. The attachment of the connecting elements 2, 3 to the parts can be done via any (not shown) fastening means, such as screws, dowels, adhesive compounds, etc. The connecting elements 2, 3 are formed in the embodiment shown as a plate-shaped hinge tabs 4, but depending on the field of use may also have a strongly deviating shape. In the assembled state, the connection elements 2, 3 are arranged so as to be pivotable relative to one another about a common pivot axis extending in their connection region 5.

At a connection element 2, three magnets 6 are provided in the connection region 5, which are detachably connectable with corresponding magnets 7 of the further connection element 3. The magnets 6 of the one connecting element 2 are in along the

Pivot axis arranged recordings (not shown in the figures) added, the interstices release, in which the corresponding receptacles of the further connection element 3 are inserted during assembly. In the connected state, a flush alignment of mutually facing edges of the hinge lugs 4. In order to prevent pivoting beyond a certain maximum pivot angle, the connection elements may be equipped with a stop. The magnets 6, 7, which are shown in enlarged scale in FIG. 1 b, are respectively polarized along a plane extending essentially in the direction of the pivot axis or axially polarized. In the connected state of the connecting elements 2, 3 are mutually unlike poles of the magnets 6, 7 facing, so that an attractive magnetic force occurs, with which a releasable connection of the connecting elements 2, 3 is produced. A separation of the connecting elements 2, 3 can be done without tools by pulling the hinge straps 4; the strength of the connection can be easily adjusted by the number and field strength of the magnets 6, 7. As magnets 6, 7 commercially available bar magnets can be used, which preferably have a cylindrical shape. In FIGS. 1a and 1b, the poles of the magnets 6, 7 are indicated schematically by + and - respectively.

The device 1 shown in Fig. La 2a was in the embodiment of Fig. Extended such that in addition to the releasable connection, a spring arrangement of the connection Ele ^¬ elements 2, is achieved about the pivot axis 3 by upon a pivotal movement from an unloaded position in a loaded position, a magnetic force or a magnetic restoring or torsional moment acts as a restoring force or restoring moment.

For this purpose, two are along a perpendicular to the

Swivel axis extending plane or diametrically polarized magnets 9 rotatably disposed in recordings of a connecting element 2. The magnets 7 cooperate with corresponding, likewise diametrically polarized magnets 10 which are provided in the complementarily arranged receptacles of the other connecting element 3. In the unloaded position, which in the embodiment shown a coplanar position of the

Hinge tabs 4 corresponds, are facing each other portions of end faces 11 of the magnets 9, 10 with opposite poles. The illustrated diametrically polarized magnets 9, 10 (see also the lower view in Fig. 2b, which a diametrically polarized magnet in Fig. 2a enlarged Dar ^¬ position can be removed) are formed as cylindrical bar magnets, consisting of two in each case a semi-circular cross-section having longitudinal halves of opposite poles hen. The end faces 11 of the bar magnets accordingly each have two semicircular segments with unlike poles. In the unloaded position, the cooperating magnets 9, 10 arranged mirror-inverted with respect to their longitudinal axis, so that always meet segments of unlike poles. A pivoting from the unloaded position causes an overlap of segments with poles of the same name, whereby a magnetic force perpendicular to the pivot axis occurs, which causes a pivoting counteracting restoring moment. The relative angular position between the connecting elements, at which the restoring moment disappears, can be adjusted via the position of the diametrically polarized magnets 9, 10 in their receptacles, in which the magnets 9, 10 are fixed by friction or with an adhesive bond.

In the embodiment shown in Fig. 2a, the releasable connection of the connecting elements 2, 3 is accomplished analogously to the device of FIG. La by axially polarized magnets 6, 7; the diametrically polarized magnets 9, 10 are arranged between the axi ^¬ al polarized magnets 6, 7. Of course, the arrangement shown could be changed or expanded in many ways; In particular, the strength of the detachable connection or the "spring constant", that is to say the strength of the pretension relative to pivoting out of the unloaded position, can be set via the number of field strengths of the individual magnets 6, 7, 9, 10. With regard to the magnets used 6, 7, 9, 10 can be used on the one hand on inexpensive permanent magnets in various designs, for example. Cylindrical or cuboid bar magnets; In many cases, it may also be favorable to use electromagnets whose field strength can be adjusted via the supply current or the supply voltage. To determine the current position of the Ver ^¬ binding elements can the magnets 6, 7, 9, 10, a Drehlagen- encoder (not shown in the drawing) is assigned.

The magnetic connection according to the invention can be extended with particular advantage to a pivoting characteristic in which the magnets 9, 10 are arranged resiliently about the pivot axis that the restoring moment in more than a relative angular position of the connection elements 2, 3 to each other disappears. This can be accomplished in a structurally simple manner by about ^¬ sammenarbeitende magnetic multipoles example. Quadrupoles or octupoles. In this case, when the magnets 9, 10 are pivoted, the magnetic restoring torque disappears against each other, depending on the multipole order, in two or more unloaded positions. Such an arrangement would hardly be achievable with conventional mechanical spring means, or only with a great deal of ^effort .

As can be seen schematically from FIGS. 2c to 2h, instead of a zipper-like arrangement of the magnets 6, 7, 9, 10, a rotation axis extending along a connecting or contacting surface of the magnets 6, 7, 9, 10 may be provided. In the simplest case, two magnets 9, 10 polarized perpendicularly to the axis of rotation can be provided (see FIG. 2c). The rod-shaped design of the magnets 9, 10 thereby allows a rolling of the magnets 9, 10 at a pivoting about the axis of rotation. The parts to be joined are not shown for the sake of clarity in Figs. 2c to 2h.

Figures 2d and 2g and 2h respectively show extended arrangements of magnets 6, 7, 9, 10 in the connection region 5, with which a more complicated spring characteristic can be achieved, for example, has several unloaded rest positions at certain angular intervals. Fig. 2e shows the unloaded rest position of the magnets 9, 10. When pivoting from this unloaded position, as indicated in Fig. 2f with arrows, the magnetic force acts as a restoring force.

Fig. 3 shows an alternative embodiment of the device 1 for the pivotable connection of parts, which is designed as a hinge in the manner of a door hinge. In plate-shaped fastening tabs 12 mounting holes 13 for (not shown in the figures) fastening means such as screws or the like. Provided with which the joint to the (also not shown) parts, in particular on a door or a door frame, are attached can. At a connecting element 2, a central, in the direction of the pivot axis extending recess 14 for receiving the other connecting element 3 is provided in the connection region. The central recess 14 of the a connection element 2 is formed as the inner cavity of a along a direction perpendicular to the pivot axis plane polari ^¬ overbased magnets 15, in which a corresponding, likewise diametrically polarized magnet 16 can be pushed further connection element. 3 With the help of cooperating diametrically polarized magnets 15, 16 a resilient arrangement is achieved around the unloaded rest position. The device 1 shown can be used in a wide variety of areas. In a preferred application, a self-closing door can be provided, wherein the fastening tab 12 of one connecting element 2 is connected to the door and the fastening tab 12 of the further connecting element 3 is connected to the door frame, and the magnets 15, 16 so are aligned so that they are pivoted upon opening the door from its unloaded position to a position in which a magnetic restoring moment acts.

The device 1 according to the invention can be used for pivotable connection of a variety of other parts, including in addition to doors, windows and flaps include furniture such as boxes. Likewise, an application in medical technology, for example for artificial (ball) joints, conceivable.

In particular, an application can take place where rapid and uncomplicated solubility is required; This is in addition to tools such as kitchen utensils or utensils of the case where for hygiene reasons a regular cleaning is required.

FIGS. 4 and 5 each show an embodiment in which tool parts 17 that work together as connectable parts are provided in the manner of gripper elements 17 'that have active sites 18 facing one another.

FIG. 4 shows a shell gripper which can be disassembled without tools and has diametrically polarized magnets 9, 10 on mutually facing edges 19 'of two shell half shells 19. In the connected state of the magnets 9, 10 are opposite poles of the magnets 9, 10 under the action of the magnetic force to each other. The magnets 9, 10 are attached to the shell shells 19 in such a way assumes that in the unloaded position of the magnets 9, 10, the shell shells 19 are opened to an object on the opposite side of the connecting region 5. to be able to record. The shell shells 17 can thus be operated as known grippers with spring elements.

Fig. 5 shows a further embodiment of the invention, in which as connecting parts two gripping elements 17 'are provided in the manner of legs 20 which are connected in their central connection region 5 via diametrically polarized magnets 9, 10. At the front end of the pincers

Gripping elements 17 'structurally effective sites 18 are provided which form clamping areas for objects to be recorded, etc. At the other end of the legs 20 grip parts 21 are formed, as for example, scissors or the like. are known. In addition, a clamping or pressure force on the magnetic field strength of the magnets 9, 10 can be adjusted, which in particular also has advantages in medical surgical instruments.

Embodiments not shown in the figures, in which the advantages of the present invention can be exploited, include jewelry, sports technology (cross-country bindings,

Boat tops, tent walls, etc.) or vehicle construction (ashtray closures, etc.). Finally, an embodiment of the device according to the invention is conceivable, are provided in which self-closing membrane.

Claims

Claims:

1. Device (1) for the pivotable connection of two Tei ^¬ len, with a fastened to a part connection element

(2), which is connectable with a fastened to the other part further connecting element (3), wherein the connecting elements (2, 3) in the connected state about a common, in its connection region (5) extending pivot axis against ^¬ are arranged pivotably , characterized in that on the connection element (2) in the connection region at least one magnet (6, 7, 9, 10) is provided, which is for a lös ^¬ bare connection with a corresponding magnet (6, 7, 9, 10) the further connection element (3) is provided.

2. Apparatus according to claim 1, characterized in that at least one along a substantially in the direction of the pivot axis extending plane polarized magnet (6) on a connecting element (2) and at least one further along a plane extending substantially in the direction of the pivot axis polarized magnet (7) on the further connection element

(3) is provided, wherein opposite poles of the magnets (6, 7) facing each other.

3. Apparatus according to claim 1 or 2, characterized in that at least one magnet (6, 9) rotatably connected to the one connection element (2) and at least one further magnet (7, 10) rotatably connected to the further connection element (3 ) connected is.

4. Device according to one of claims 1 to 3, characterized ge ^¬ indicates that the magnets (9, 10) to achieve a resilient arrangement of the connecting elements (2, 3) to the

Pivot axis are pivotable from an unloaded position to a loaded position in which a magnetic force acts as a restoring force.

5. Device according to claim 4, characterized in that a magnet (9) polarized along a plane extending substantially perpendicular to the pivot axis is connected to one connecting element (2) and another plane polarized along a plane extending substantially perpendicular to the pivot axis. gnet (10) is provided on the other connection element (3), where ^¬ in the unloaded position mutually opposite poles of the magnets (9, 10) are facing.

6. Device according to claim 4 or 5, characterized in that for achieving a detachable and resilient arrangement of the connecting elements (2, 3) about the pivot axis to the Verbin ^¬ manure elements (2, 3) on the one hand co-operating along a substantially in the direction of the pivot axis extending plane polarized magnets (6, 7) and on the other zusammenar ^¬ beitende along a plane substantially perpendicular to the pivot axis extending plane polarized magnets (9, 10) are provided.

7. Device according to one of claims 1 to 6, characterized in that the pivot axis in the connected state of the magnets (6, 7, 9, 10) in a contact surface of the connecting elements (2, 3).

8. Device according to one of claims 1 to 7, characterized in that as connecting elements (2, 3) hinge lugs (4) are provided, wherein the magnets (6, 7, 9, 10) in corresponding, substantially along the pivot axis arranged recordings of the connecting elements (2, 3) are added.

9. Device according to one of claims 1 to 7, characterized in that for forming a hinge in the manner of a door hinge, a connecting element (2), which preferably has a polarized along a plane perpendicular to the pivot axis extending plane (15), a central, in the direction of the pivot axis extending recess (14) for receiving the other connecting element (3), which preferably has a polarized along a plane perpendicular to the pivot axis plane magnet (16).

10. Device according to one of claims 1 to 9, characterized ge ^¬ indicates that at least one permanent magnet, in particular bar magnet, is provided.

11. Device according to one of claims 1 to 10, characterized in that at least one electromagnet is provided.

12. The device according to claim 11, characterized in that the electromagnet is connected to a rotary position sensor.

13. Device according to one of claims 1 to 12, characterized in that for limiting the pivoting a Anschla is provided.

14. The device according to one of claims 1 to 13, characterized in that as connectable parts cooperating tool parts (17), in particular gripping elements (17 '), are provided, which have mutually facing active sites (18).

15. The apparatus of claim 14 / characterized in that as co-operating gripping elements (17 ') shell shells (19) or legs (20) are provided in the manner of a pair of pliers.