Tuning of a kinematic relationship between members

[Related application]

This application has priority under New Zealand Patent Application No. 627630, which is incorporated herein by reference. A device with members of kinematic relationship is described herein, and this kinematic relationship is at least partially dominated by at least one magnetically induced force that introduces a force threshold. In effect, it can provide a threshold and a degree of hysteresis, blocking motion until a sufficiently large urging force is applied. This effect can be further altered by the use of additional magnetically induced force interactions with at least one additional member to urge or slow the motion once initiated and / or to a new position once. When it reaches, it blocks the movement.

Eddy current formation can be used in various ways to regulate the rotational speed of the member. Various devices exist, for example controlling the climber's descent in rappelling, or preventing injured falls, for example in personal protective equipment scenarios. Other uses of eddy current generation are in controlling the rope feeding of trains, cable cars, zipline devices and roller coasters.

One technical device is published as US2012 / 0055740. The device utilizes a rotor assembly with an arm that moves relative to the rotor. The arm itself may be conductive or magnetic, or it may have a conductive or magnetic member attached to the arm. When a rotational force is applied to the rotor, the arm moves outward from the central axis due to centrifugal force and enters the magnetic (or conduction) field. Eddy currents are generated as the arm moves through the field, and its strength depends on the rotational speed. When the rotational speed decreases, the arm is pulled back toward the axis of rotation by the spring and / or by reducing the centrifugal force acting on the arm. This device is widely used and provides an excellent means of changing the relative speed of parts.

One aspect of the device is that there is minimal hysteresis between the activation and non-activation of the braking effect. This can result in rapid on-off switching of braking effects called "chatters". Chatter is particularly undesirable in certain applications. For example, in a fall safety application, an automatic belay may be attached to a harness worn by a person who is in danger of falling. When a fall occurs, the device brakes and / or stops the fall, thereby preventing injury or loss of life. Chatter is an obstacle to fall safety applications. For example, when the user suddenly (but not falls) moves, an operation that does not require a braking effect may occur. Malfunctions can result in fatigue of the user, can cause the user to fall out of balance, or malfunctions are simply a generally annoying factor. In the worst case, chatter can discourage the use of fall safety devices, resulting in serious injury or loss of life.

Depending on the end use of the device, it may also be useful to urge or slow the movement of the arm once started in the device with additional inputs.

Both slowing and / or completely stopping relative motion between parts in means that can be recognizable to avoid unintended braking and induce an adjustable degree of hysteresis. Providing means can be useful, or at least give the public a choice.

Further aspects and advantages of the device will become apparent from the following description given for illustrative purposes only.

A device with members of kinematic relationship is described herein, and this kinematic relationship is at least partially dominated by at least one magnetically induced force that introduces a force threshold. In effect, it can provide a threshold and a degree of hysteresis, blocking motion until a sufficiently large urging force is applied. This effect can be further altered by the use of additional magnetically induced force interactions with at least one additional member to urge or slow the motion once initiated and / or to a new position once. When it reaches, it blocks the movement.

In a first aspect, a device comprising at least one first member or part thereof and at least one second member or part thereof, wherein the first and second members are substantially adjacent to each other and restricted from each other. In a kinematic relationship, the device has at least one magnetic attraction relationship between the members that forms a magnetic attraction between the at least one first and second member or parts thereof, and the magnetic attraction is Provides a force threshold that prevents movement between members and follows a kinematic relationship between at least one first member and at least one second member when this threshold is exceeded by the application of urging force. A device is provided in which a dynamic system produces relative motion.

In a second aspect, a device comprising at least one first member or portion thereof coupled to a second member and at least one third member or portion thereof, the first and third aspects. The members are approximately adjacent to each other and have a restricted kinematic relationship with each other, and the device forms at least one magnetic inductive force between the members, at least one first and third member or parts thereof. With an attractive relationship, the magnetically induced force provides a complementary force that overcomes at least a force threshold that resists motion between the first and third members, and as a result, when this threshold is exceeded by the application of urging force. (A) Relative motion is generated by a dynamic system that follows a kinematic relationship between at least one first and third member, and (b) the inductive force accelerates the motion of the first member with respect to the third member. , (C) Inducing forces provide a device that provides a holding force that resists the reversal of relative motion.

In a third aspect, a brake comprising a device substantially as described above, wherein at least one first member or portion thereof is at least partially electrically conductive and an independent magnetic field. As a result, (a) at least one first member and at least one second member remain magnetically coupled before sufficient urging force. When a first no or low induction eddy current braking effect is produced and (b) sufficient urging force is applied to overcome the magnetic induction force, at least one first member moves into the magnetic field and It provides a brake that induces an eddy current braking effect on the motion of at least one first member or portion of the magnetic field.

In a fourth aspect, a line intersecting device is provided that incorporates at least one device substantially as described above.

In a fifth aspect, a passenger seat restraint device is provided that incorporates at least one device substantially as described above.

In a sixth aspect, there is provided a transmission drive that incorporates at least one device that substantially engages the rotary drive as described above.

In a seventh aspect, a linear guided lifeline is provided that incorporates at least one device substantially as described above.

Further, as outlined in the description below, many other device applications may also be possible.

One advantage of the above device is that it includes the ability to control the time point at which the movement defined by the kinematic relationship occurs. In addition, a further advantage of the device is that it affects the kinematic relationship even once the exercise has begun. The magnitude of the inertial effect can be adjusted between the two extremes, from high resistance to motion to low resistance to motion. In addition, the use of additional magnetic members can have a greater or lesser effect on the kinematic threshold and kinematic velocity. The adjustment in this way can have an effect of avoiding on / off chatter and can give a degree of hysteresis in the operation of the device. A third member can also be adjusted for inactivity, eg, to avoid accidental release from the latch. Another further advantage of the device is its extensive ability to control and alter motion by kinematic relationships, which allows the device to be used in a wide variety of different modes and applications. And it means that the possibility of malfunction can be minimized.

Further embodiments of the device will be apparent from the following description given for illustrative purposes only and with reference to the accompanying drawings.<figref num="1">A side view of one embodiment of a device having a magnetic attraction relationship is shown.</figref><figref num="2">The graph which showed the relationship between the magnetic attraction and the motion of a claw or a first member is shown.</figref><figref num="3">A side view of an alternative embodiment incorporating a rotating second member and a first member with two magnetic relationships is shown.</figref><figref num="4">A side view of an alternative embodiment incorporating a rotating second member and a first member with two magnetic relationships is shown.</figref><figref num="5">A graph showing the modified relationships that occur with the arrangements used in FIGS. 3 and 4 is shown.</figref><figref num="6">A side view of an alternative embodiment incorporating a rod-shaped first member is shown.</figref><figref num="7">A side view of an alternative embodiment incorporating a rotating third member, a fixed second member, and a relative moving first member is shown.</figref><figref num="8">A side view of an alternative embodiment with respect to FIG. 7 incorporating a rod-shaped first member is shown.</figref><figref num="9">A side view of an alternative embodiment incorporating claws of a sliding second member and a pivoting first member is shown.</figref><figref num="10">A side view of an alternative embodiment with respect to FIG. 9 incorporating a rod-shaped first member is shown.</figref><figref num="11">A side view of a further alternative with a fixed second member and a moving third member is shown.</figref><figref num="12">A side view of a further alternative to FIG. 11 using the rod-shaped first member is shown.</figref><figref num="13">A perspective view of a device having a further alternative shape is shown.</figref>

As mentioned above, the present specification describes a device with members in a kinematic relationship, which kinematic relationship is at least partially governed by at least one magnetically induced force that introduces a force threshold. This effectively provides a threshold and can provide a degree of hysteresis and blocks motion until a sufficiently large urging force is applied. This effect can be further altered by the use of additional magnetically induced force interactions with at least one additional member to urge or slow the motion once initiated and / or to a new position once. When it reaches, it blocks the movement.

For the purposes of this specification, the terms "about" or "almost" and their grammatical variations are to reference quantities, levels, degrees, values, numbers, frequencies, percentages, dimensions, sizes, quantities, weights or lengths. In contrast, quantities, levels, degrees, values, numbers, frequencies, percentages, dimensions that fluctuate by at most 30, 25, 20, 15, 10, 9, 8, 7, 6, 5, 4, 3, 2, or 1%. , Size, quantity, weight or length.

The term "substantially" or its grammatical variant refers to at least about 50%, such as 75%, 85%, 95% or 98%.

The term "contains, provides" and its grammatical variants shall have a comprehensive meaning, i.e. not only the listed components it directly refers to, but also other unspecified components or elements. Interpreted as meaning to include.

The term "energizing force" and its grammatical variants refer to forces that act to give an object a speed of motion.

The term "dynamic" and its grammatical variants refer to forces induced by mechanical means in the context of the motion of a device or part of a device, and for the purposes herein, the forces that can arise from liquid fluid motion or pressure. exclude.

In a first aspect, a device comprising at least one first member or part thereof and at least one second member or part thereof, wherein the first and second members are substantially adjacent to each other and restricted from each other. In a kinematic relationship, the device comprises at least one magnetic attraction relationship between the members that forms a magnetic attraction between the at least one first and second member or parts thereof. It provides a force threshold that blocks movement between members, and when this threshold is exceeded by the application of urging force, it follows the kinematic relationship between at least one first member and at least one second member. A device is provided in which relative motion is generated by the target system.

Relative movement between at least one first member and at least one second member in the above embodiment can be prevented by the device in the initial state, and the device is a third member and at least one first member. It further comprises at least one additional magnetic attraction relationship with one member and / or at least one second member, with at least one third member or portion thereof and one or more first and / or A second magnetically induced force is formed between the second member or a portion thereof, and the second magnetically induced force provides a complementary force that overcomes the force threshold that resists the movement between the members, and as a result, the urging force. When this threshold is exceeded by the application of, (a) relative motion occurs due to the kinematic relationship between at least one first and second member, and (b) the second inductive force is one or more. Accelerates the movement of the first and / or second member with respect to the third member, and (c) the second inductive force provides a holding force that resists the reversal of relative motion.

The first and second members can be joined together. The connection can be direct or indirect, for example via a spring or other member.

In a second aspect, a device comprising at least one first member or portion thereof coupled to a second member and at least one third member or portion thereof, the first and third aspects. The members are approximately adjacent to each other and have a restricted kinematic relationship with each other, and the device forms at least one magnetic inductive force between the members, at least one first and third member or parts thereof. With an attractive relationship, the magnetically induced force provides a complementary force that overcomes at least a force threshold that resists motion between the first and third members, and as a result, when this threshold is exceeded by the application of urging force. (A) Relative motion is caused by the kinematic relationship between at least one first and third member, and (b) the inductive force accelerates the motion of the first member with respect to the third member, (c). A device is provided in which the inductive force provides a holding force that resists the reversal of relative motion.

The complementary force, along with the inertial force, can act on one or more first members to overcome the initial magnetic attraction relationship, thereby altering the kinetic properties of the device.

The magnetically induced forces described in the above aspects are at least one ferromagnetic element and / or region on and / or on at least one first member and at least one on and / or on at least one second member. It can be between two magnetic elements and / or regions.

Magnetic inducing forces are at least one ferromagnetic element and / or region on and / or at least one second member and at least one magnetic element and / or on at least one first member and / or. Or it can exist between the area.

The magnetic inducer is at least one magnetic element and / or region on and / or within at least one first member of the first polarity and at least one of the second polarities opposite to the first polarity. It can be present on and / or between at least one magnetic element and / or region within the second member.

As recognized from the above example, the method of generating the magnetic inductive force is not limited to the combination of adjacent magnets, or the order or arrangement of the ferromagnetic element and the magnetic element and each member, and can be changed. .. Moreover, the magnetic attraction material need not be limited to the paramagnetic material and can be extended to the paramagnetic material, thus the term "ferromagnetism" or its grammatical variants include but are not limited to paramagnetic materials. Please be aware that it also includes magnetically attractive materials.

The movement of the first member once the magnetic inductive force is overcome can be direct, that is, the movement of the first member is directly due to the urging force. The first member can instead move at least partially indirectly due to or on behalf of the urging force, which is at least one additional mechanical part or kinetic. The means causes the movement of the first member or the interaction with the first member, thereby subsequently causing the movement of the first member. The indirect means can be a centrifugal force exerted on the first member by dynamic force transmission through another part, such as a joint or a gear, or by a direct force against another part. Indirect or surrogate force transmission can have the advantage of being able to amplify the urging force.

The static or dynamic position and / or intensity adjustment of the point of action of the magnetically induced force is also (a) on at least one first member or portion thereof as the first member or second member moves. Adjusting the position of the magnetic element or conductive region and / or (b) the magnetic element or conductive region on at least one second member as the at least one first or second member moves. It can be completed by adjusting the position.

As an example, the first member can be provided with a slot, and a portion of the first member with a magnetic element or conductive region is said to move as the first member moves as a whole when an urging force is applied. Move in the slot. This additional means of regulating motion can be useful in further altering the dynamics of force, and thus the way the components interact, thus further changing the force threshold.

The relative motion between the first member and one or more additional members can be friction-free motion. Any magnetic force, such as the inductive force described above, followed by any force acting on the first member, can avoid frictional contact. This can be useful in minimizing mechanical wear on the part.

In one embodiment, the motion between the parts is dominated by dynamic forces. The device can be free of liquid fluids and all movement between parts is due to dynamic forces. Alternatively, the device can have some liquid fluid present, but the main urging force on the device member is a dynamic force. Although there are liquid-based systems that utilize magnetism to change kinematic relationships, these devices are often bistable, that is, the parts are stable in only two positions, as described herein. It is different from the device that does. In addition, motion relies primarily or entirely on the force or pressure accumulated from the liquid fluid, as opposed to dynamic force. Liquid-based equipment also has inherent drawbacks associated with liquid encapsulation and requires more regular maintenance to ensure reliable operation.

The kinematic relationship can be rotational or linear.

Regarding rotational relationships: At least one first member can be one or more claw-shaped or arm-shaped members, which can be a rotor that rotates when an urging force is applied. Can be mechanically connected to the members of. And / or-At least one first member can be placed adjacent to the rotor and part of at least one first member is subjected to a sufficiently large urging force to overcome the magnetic inductive force. And can move out of the area defined by the rotor. And / or At least one first member can be pivotally attached to the rotor around a pivot shaft offset from the rotor shaft.

With respect to the linear relationship: At least one first member can be one or more claw-shaped or arm-shaped members, which can be a carriage that translates when an urging force is applied. Can be mechanically connected to the members of. And / or At least one first member may be mounted linearly on the carriage around a pivot axis offset from the direction of motion of the carriage.

At least one first member or portion thereof is arranged so as to engage at least one latch member when at least one first member and at least one second member move when an urging force is applied. can do. As a result of the engagement of the at least one first member with the at least one latch member, relative movement can be prevented between the at least one second member and the at least one latch member.

The third member may be at least one latch member arranged to engage with at least one first member when at least one first member moves when an urging force is applied. it can.

At least one first member or portion thereof can be electrically conductive, and relative motion after overcoming a threshold causes at least one first member to move into a magnetic field, where at least one. When one of the first members moves, an eddy current induced drag effect occurs.

The device can include a magnetic field that interacts with the motion of the first member, which induces eddy current drag on the first member, tilted or offset from the line of action of the eddy current induced drag, respectively. Or cause linear and / or rotational translation of at least one first member around a point.

At least one first member can, when an urging force is applied, move at least partially orthogonally to the direction of movement of the second member as defined by the kinematic relationship, and / Or it can be pivoted to a magnetic field.

Kinematic relationships can be limited by the use of openings within at least one first member that define the range of motion, and stops that define one or more distal points of the opening. The magnetic attraction relationship can be near each distal point of the opening.

The magnetic field can be stationary or move at different relative velocities with respect to at least one first member.

The rate at which at least one first and second member moves relative to each other is (a) magnetic surface area, (b) magnetic force strength, (c) at least one magnetic element and / or region is at least one magnetic or strong Proximity adjacent to the magnetic element and / or region, (d) geometric shape and / or magnetic properties of at least one magnetic element, (e) ferromagnetic content of at least one ferromagnetic element and / or region, (f) It can be further adjusted by changing at least one of the magnetization rates of the ferromagnetic material.

As recognized from the above, the members can take on various shapes or weights that are factors affecting the operation and / or speed of movement of one or more members once the movement has been initiated. The magnetic interaction can be, for example, continuous or spaced or dimensionally varying over the length of the first member, thereby regulating the generation of magnetic flux. The magnetic interaction portion of the first or other member may be the entire member or only a portion thereof. If only a portion of the member magnetically interacts, the position of the interacting portion, either outside, inside or on the member, can be changed.

In a third aspect, a brake comprising a device substantially as described above, wherein at least one first member or portion thereof is at least partially electrically conductive and an independent magnetic field. As a result, (a) the at least one first member and the at least one second member remain magnetically coupled before the urging force is sufficient. , The first induced vortex current braking effect does not occur, or the first low induced eddy current braking effect occurs, and (b) at least one first when sufficient urging force is applied to overcome the magnetically induced force. A brake is provided in which one member moves into a magnetic field, thereby inducing a vortex current braking effect on the movement of at least one first member or portion thereof with respect to the magnetic field.

In a fourth aspect, a rope feeding device is provided that incorporates at least one device substantially as described above. Rope feeding devices, such as automatic belay devices, are widely used to prevent falls in both recreational and industrial applications. In some cases, the magnetic attraction relationship can be useful in adjusting the characteristics of the automatic belay device.

In a fifth aspect, a passenger seat restraint device incorporating a stretched and retracted strap is provided, the strap being operably coupled to at least one device as described above. .. An example of a passenger seat restraint device can be a seat belt used in a vehicle such as an automobile. Seat belts are a crucial safety feature, and the devices described above can provide a useful alternative to existing designs, especially given the ability to adjust the response in the various manners described above.

In a sixth embodiment, there is provided a transmission drive that incorporates at least one device that substantially engages the rotary drive as described above.

In a seventh embodiment, a linear guided lifeline is provided that incorporates at least one device substantially as described above.

The above examples should not be considered limiting, as the equipment described can be used in a variety of other applications, and non-limiting examples include: -Rotary turbine rotors-Exercise equipment such as rowing machines. , Epicyclic trainer Roller coaster and other play equipment vehicles Elevator and escalator system Evacuation descent device and fire evacuation device Conveyor system Rotary drive device in factory production equipment Material transfer device such as conveyor belt or in chute Braking devices-Dynamic display signs that control the rate of change of rotary signs-Roadside safety systems, such as eddy current brakes, can be connected to the system to provide collision attenuation by energy dissipation from the brakes. -In-vehicle seat belts-Includes speed control of braking mechanisms for trolleys and carriages.

As mentioned above, one advantage of the device includes the ability to control the time point at which the movement defined by the kinematic relationship occurs. In addition, a further advantage of the device is that it affects the kinematic relationship even once the exercise has begun. The magnitude of the inertial effect can be adjusted between the two extremes, from high resistance to motion to low resistance to motion. In addition, the use of additional magnetic members can have a greater or lesser effect on the kinematic threshold and kinematic velocity. The adjustment in this way can have an effect of avoiding on / off chatter and can give a degree of hysteresis in the operation of the device. A third member can also be adjusted for inactivity, eg, to avoid accidental release from the latch. Another further advantage of the device is its extensive ability to control and alter motion by kinematic relationships, which allows the device to be used in a wide variety of different modes and applications. And it means to minimize the possibility of malfunction.

Broadly speaking, the embodiments described above are, broadly speaking, the parts, elements and features individually or collectively referred to or indicated in the specification of the present application, and any or more of the two or more said parts, elements or features. It can be said that it exists in all combinations, and when a specific integer having a known equal range in the technical field to which the embodiment relates is referred to herein, such known equal range is as if individual. It is deemed to be incorporated herein as described in.

Where a particular integer having a known equivalence in the art to which the invention relates is referred to herein, such known equivalence is incorporated herein as if it were stated individually. Is considered to be.

<p> The above-mentioned apparatus will be described here with reference to a specific example.</p><p> It should be noted that although only a single first member is typically shown for ease of explanation in the examples, multiple first members can be used.</p><p> The magnetic field through which the first member moves and the third member or latch member are shown schematically as continuous regions as they are redundant. The magnetic field (if any) can be, for example, a series of discrete magnets, or just one magnet. Similarly, the third member (if present) can exhibit a variety of shapes or surface contours, and only a limited number of examples are given for clarity.</p><p> In the example, for example, it may indicate a specific motion of the first member, but the magnetic field when present, the second member and / or the third member may also move, or other It should be recognized that while the member moves, the first member may remain fixed.</p><p> Example 1 As shown in the schematic diagram of FIG. 1, the apparatus 1 of the illustrated embodiment moves relative to the second member 5 which is a rotor rotating in the direction A around the rotation axis 6 in this illustrated example. The first member 2 is provided. The third member 4 is also shown.</p><p> The illustrated first member 2 is attached to the second member 5, and is a portion limited by the pivot shaft 7 of the first member, the position of the third member 4, and the rotation speed of the second member 5. There is a kinematic relationship between them.</p><p> At a predetermined position between the first member 2 and the second member 5, there is a magnetic inductive force by one or more magnets 8 connected to the second member 5 and shown as a block shape in this figure. The first member 2 includes a portion 9 that is magnetically attracted to the magnet 8 or is attracted as a whole. The magnetic inductive force blocks the relative movement between the first member 2 and the second member 5 until the urging force E exceeds the threshold force F. In the embodiment of FIG. 1, the urging force is generated by the sufficiently fast rotation of the second member 5, the centrifugal force and the inertial action overcome the threshold force F, and the first member 2 rotates around the pivot axis 7.</p><p> FIG. 2 shows this action by comparing the motion of the first member 2 (referred to as a claw in FIG. 2) with respect to the applied force F. No or minimal movement occurs until the urging force is reached (indicated as F trigger in FIG. 2), after which as the first member 2 moves away from the second member 5. The magnetic induction force dissipates rapidly. As is recognized, the introduction of the threshold force input slows the operation of the first member 2 and thus adjusts the timing of any subsequent events caused by the movement of the first member 2.</p><p> The kinematic relationship between the members 2 and 5 can be changed in various ways, for example by changing the conductivity of the first member 2 or by changing the dimensions and / or position of the magnet 8 ( For example, the threshold force is changed by denting it in the second member 5.</p><p> Example 2 Figure 3 shows an addition to the device of Example 1. In this example, a third member 4 is added, which applies a magnetic inductive force to the first member 2, thereby kinematics between the various members 2, 4, and 5. Further change the relationship. In the illustrated embodiment, the magnet is placed on the third member 4, which attracts part 9 or the whole of the first member 2. The inductive force on the third member 4 is with the first member 2 until sufficient urging force is applied to overcome the threshold force (eg, due to the rotation of the second member 5 around the axis 6). Not strong enough to overcome the inductive force with the second member 5. When the movement of the first member 2 begins to occur, the magnet on the third member 4 urges the movement of the first member 2 with respect to the third member 4. The magnet 8 on the third member 4 can also provide sufficient force to hold the first member 2 against the third member 4. The magnetic field 3 can be located adjacent to the first member 2 and can also apply a braking force against the motion of the first member 2 due to the magnetically induced eddy current effect.</p><p> FIG. 4 shows alternative embodiments that can be used to achieve the above interactions. In this case, the first member 2 is shaped to have a jaw and the stop connected to the second member 5 is located in the jaw region. The first member 2 has a kinematic relationship with the second member 5, and when the second member 5 rotates, a centrifugal force is generated on the first member 2 to cause the first member to have its pivot axis. Move outward around the axis of rotation of the second member 5. The jaw of the first member 2 acts to determine the maximum motion. The stop can be a magnet 8, which magnetically attracts the side 9 or all of the jaws of the first member 2. This embodiment has the same effect as the embodiment of FIG. 3 even though the jaws of the first member act as separate points on which the magnetic inductive force acts.</p><p> FIG. 5 shows a graph of how the force interacts with the movement of the first member 2 in either embodiment of FIG. 3 or FIG. The magnetic induction force is high at both extremes and low in the middle of the motion of the first member 2. Once the urging force overcomes the threshold forces indicated by the words "trigger" and "hold" on the graph, it overcomes the magnetic induction force.</p><p> Example 3 FIG. 6 shows a further embodiment in which the first member 2 takes the form of a rod, where the rod 2 translates along the translation line indicated by XX and is an opening in the second member 5. Go in and out (not shown). The rotation of the second member 5 around the axis A induces an urging force, which translates the rod 2 into the opening once it overcomes the magnetic inductive force between the magnet 8 and the second member 5. One end of the rod 2 can interact with the third member 4 via an additional magnet (not shown). This example shows how the first member 2 can exhibit different shapes and forms, and the movement of the first member 2 is due to the axis of rotation as in the previous example. Illustrate that it can be translated as in this example.</p><p> Example 4 FIG. 7 shows a further embodiment of the latch device 1. In this embodiment, the second member 5 and the first member 2 are placed on the outer periphery of the rotating magnetic field 3 and the third member 4 whose axis of rotation is item 6 and whose direction of motion is clockwise. .. When an urging force is applied, the first member 2 overcomes the magnetic inductive force between the magnet 8 connected to the second member 5 and the first member 2, and then moves around the axis of rotation 7. Then, at least a part of the first member 2 moves into the magnetic field 3. In the illustrated embodiment, the eddy current drag (not shown) is induced until the first member 2 engages with the third member 4 to stop the relative rotation of the third member 4 and the magnetic field 3. Encourage the rotation of member 2 of 1. The third member 4 does not necessarily have to be present, or instead, the third member 4 can merely act as a stop rather than a latch for further rotation of the first member 2. ..</p><p> Example 5 As shown in FIG. 8, the same principle as shown in FIG. 7 can be applied using the rod-shaped first member 2 first discussed in FIG. 3 above. In this example, the second member 5 and the first member rod 2 are fixed in place on a portion of the periphery of the device 1, and the magnetic field 3 and the third member 4 are oriented around the axis 6. Rotate to A. The first member rod 2 is offset in a tilted direction with respect to the direction of rotation, allowing the rod 2 to translate and exit (and return to) the second member 5 under the influence of inertial effects. Please note that it is.</p><p> Example 6 Reference to FIG. 9 shows an alternative embodiment in which linear motion is used in contrast to the rotational motion illustrated in the above embodiment.</p><p> The second member 5 moves along a plane in the direction YY. The first member 2 is shown as a claw in this case, one end attached to the pivot shaft 7 fixed to the second member 5. The magnet 8 is placed on the second member 5, which together with the first member 2 creates a magnetic inductive force. When the second member 5 moves in the linear direction YY, the first member 2 overcomes the threshold force, then moves into the magnetic field 3 and is urged by the eddy current drag and the inertial force, and the first member 2 or It rotates around the shaft 7 until a part of it contacts and engages with the third member 4.</p><p> Example 7 FIG. 10 shows an embodiment similar to that of FIG. 6, this time using a rod as the first member 2, which translates along line XX instead of rotating around an axis. The rod 2 interacts with a magnet 8 arranged on the second member 5. When the second member 5 moves in the linear direction YY, the first member rod 2 has a second member rod 2 due to eddy current induced drag and inertial force due to the movement of the rod 2 in the magnetic field 3. It is pulled out from member 5.</p><p> Example 8 FIG. 11 shows an embodiment similar to the embodiment described in Example 6, but in FIG. 11, the magnetic field 3 and the third member 4 move in the linear direction YY, and the claw-shaped first member 2 And the second member 5 remains stationary with respect to the movement in direction YY. The motion of the magnetic field 3 overcomes the magnetic inductive force between the magnet 8 and the side or all of the first member 2, thereby causing the first member 2 of conductivity around the axis 7 to move first. The member 2 is urged until it engages with the third member 4, at which point the relative movement is stopped.</p><p> Example 9 FIG. 12 shows an embodiment of Example 8, but this time, the rod-shaped first member 2 described in the previous embodiment is used. As will be appreciated, the shape of the first member 2 can also be modified in this scenario of the fixed second member 5 as well as the moving magnetic field 3 and the latch member 4.</p><p> Example 10 FIG. 13 shows a further modification of the device 1. In this embodiment, the first member 2 is formed as a tube. The first member tube 2 can rotate around the direction B and can be translated in the linear direction A along the axis of rotation. The first member tube 2 can be moved in translational direction A into the second member, which can be a magnet or a magnetized cylinder 3. Translational motion can be suppressed by the use of a magnet 8 connected to the axis of rotation. The magnet 8 forms a magnetic inductive force between the magnet 8 and the first member 2 until a sufficient threshold force is reached by the urging force. When the threshold is reached, the first member 2 translates into the second member 3. The relative variation in motion between the first member 2 and the second member 3 induces eddy current drag, which slows the rotation of tube 2 with respect to the magnetizing cylinder 3. Optionally, the claw 20 can engage the third member, in this case the latch 4, where in this example the latch 4 can be a fitting recess inside the second member 3. , The claw 20 meshes there. Additional magnets (not shown) can be incorporated on or in the third member 4 to create magnetic inductive forces between the parts. The translational motion of the tube 2 can be urged by a drive mechanism such as a threaded shaft 30.</p><p> Although aspects of the device have been described for illustrative purposes only, it should be appreciated that modifications and additions can be made without departing from the scope of the claims herein.</p>