Summary of the invention
The present invention's attempt overcomes these problems of known mechanisms.
According to the present invention, provide a kind of mechanism that can utilize minimum energy operation.Further, in automobile was used, release movement can be by existing management system control in the vehicle.
According to one embodiment of the present of invention, a kind of releasable maintaining body is provided, it needn't need mechanical pallet just mechanism can be remained on latched position, but utilizes magnetic force that the holding device of mechanism is remained on stationary state.
Preferably, releasable maintaining body comprises permanent magnet, and described permanent magnet is provided for holding device is remained on first magnetic force of latched position.
As selection, releasable maintaining body preferably includes electromagnet and power supply, and described electromagnet and power supply are provided for holding device is retained in first magnetic force of latched position.
Releasable maintaining body preferably includes release gear, described release gear comprises second magnetic force that can be used for the antagonism of first magnetic force, and configuration like this, in use, the synthetic magnetic force of first magnetic force and second magnetic force is not enough to prevent that holding device from moving to the d/d lockset position of coupler of Connection Element from latched position.
Releasable maintaining body preferably includes and is used to provide the electromagnet and the power supply of second magnetic force and the control setup that is used to encourage electromagnet.
The present invention's attempt is by providing a kind of releasable maintaining body, overcome these problems of known mechanisms, it needn't need the movable actuator of magnet coil or other type to come the release function of starting mechanism, but utilize second magnetic force to reduce first magnetic force, make synthetic magnetic force be not enough to prevent the motion of holding device like this, thereby discharge Connection Element.
But holding device preferably includes at least one pivoting member, and configuration like this, and in latched position, but the first of pivoting member operationally engages Connection Element, but the second portion of pivoting member operationally links with first magnetic force and kept by first magnetic force.
In an embodiment of the present invention, preferably, releasable maintaining body comprises and is used for starting lever turns to lockset position of coupler from latched position auxiliary device with second magnetic force.Further preferably, the auxiliary device that is used to start the rotation of lever comprises and promotes the spring element of lever from latched position to lockset position of coupler.
Spring element preferably includes coil spring, and like this configuration, and in the latched position of maintaining body, coil spring puts on second far-end of lever with turning effort, and turning effort promotes lever and arrives lockset position of coupler.Preferably, putting on power on the lever by Connection Element is on the basic orientation away from second remote extension of lever.
In order to help to realize good contact the between lever and first magnetic field, preferably, lever comprises second pivotal area that is arranged between first pivot and second far-end, second far-end can pivot around second pivotal area, and configuration like this, in latched position, second pivotal area allows second far-end to align certainly with the magnetic force of the motion that prevents holding device.
Maintaining body can be arranged in unclean environment, preferably, releasable maintaining body comprise second far-end that holds lever containment shell, be used to prevent that lever is at first magnetic force of latched position motion with comprise the release gear of second magnetic force that can be used for resisting first magnetic force.Shell will be protected the mating surfaces of second far-end of magnet and lever, thereby improve two magnetic attractions between the element.
Preferably, second magnetic force is provided by electromagnet and power supply.Electromagnet is preferably incorporated in the Upon Flexible Adhesion thing on the containment shell, and configuration like this, and in latched position, the Upon Flexible Adhesion thing allows electromagnet to align certainly with second far-end.
Another that can improve magnetic attraction between second far-end and the magnet is characterised in that lever is preferably formed porose, and pivot runs through this hole and extends, and the diameter in this hole is enough bigger than the diameter of pivot, makes that second far-end can be from alignment under the effect of first magnetic force.
Permanent magnet preferably is attached on the shell still, and it is preferably the part of electromagnetic unit, and configuration like this, in use, second far-end and the permanent magnet of lever separate, when lever when latched position moves to lockset position of coupler, second far-end moves on away from the direction of permanent magnet.As selection, permanent magnet is attached to second far-end of lever or forms the part of second far-end, and configuration like this, in use, when lever when latched position moves to lockset position of coupler, second far-end of lever and permanent magnet move on the direction away from the point of action of second magnetic force.
Those skilled in the art will be appreciated that groundwork of the present invention can be widely used on the various releasable maintaining bodies.But, preferably, maintaining body comprises that being used to reduce the machinery that Connection Element puts on the power on the releasable maintaining body reduces configuration (mechanical reduction arrangement), can reduce to promote the turning effort of holding device like this, prevent that therefore the required magnetic force of holding device motion needn't be very big towards lockset position of coupler.
Preferably, the configuration of the effective magnetic force that is used to reduce to prevent that the holding device motion is required comprises that ratio is that 5: 1 or above machinery reduce configuration.
The present invention is used for keeping the roll bar with lifting overturning protection system.Roll bar is made by the part of the seat structure of vehicle usually, is perhaps made by the part of vehicle chassis.Releasable maintaining body is fastened on roll bar framework, seat mount or the chassis of vehicle rigidly or slightly loosely.Between roll bar and releasable maintaining body, be provided with the Connection Element that rigidly or slightly loosely is anchored on roll bar.The allowance error that is used for towards the roll bar positional actuator is depended in Connection Element rigidity or lax slightly fastening configuration.Connection Element is by releasable maintaining body locking or release.When downward promotion roll bar, releasable maintaining body is locked/engages, force Connection Element to enter releasable maintaining body thus.When the releasing member to maintaining body sent signal, releasable maintaining body discharged Connection Element.
According to the present invention, realized a kind of under than the situation of low energy demand the releasable maintaining body of rapid release.Release movement is by the motion-activated of a lever, for example the pivot rotaring lever of the locking of fixed connecting element on a far-end.The motion of lever averages out between the static confining force that is for example provided by the permanent magnet that produces hold torque and the relative release force that is for example provided less than the reloading spring of the moment of unblanking of described hold torque by generation.In release movement, an electromagnet can utilize the auxiliary moment excitation of unblanking that overcomes described hold torque with reloading spring, so that lever is worked.If Connection Element by prestension, if perhaps it has otherwise influenced the moment balance of lever, then can consider to introduce the off-centre configuration of the pivot axis of lever in its release direction.
These reach further improvement and advantage can realize by the present invention who limits in subsidiary claims.
The specific embodiment
With reference to Fig. 1-3, shown first embodiment that is used to lock and discharge the releasable maintaining body 302 of Connection Element 304.But releasable maintaining body 302 comprise be used for Connection Element 304 remain on latched position projection P form holding device and have the pivot rotaring lever 306 of at least one notch portion 310, be used to prevent that lever 306 moves to lockset position of coupler (as shown in Figure 2) from latched position (as shown in figs. 1 and 3) another device is by for example being provided by the magnetic attraction of permanent magnet.Lever 306 can bear the influence of the magnetic force of described permanent magnet; This magnetic force remains on latched position with lever 306.The axis of pivot 326 preferably is arranged on same base member or the shell with projection P.Releasable maintaining body 302 comprises combination magnet unit 308, and it comprises permanent magnet and electromagnet.Electromagnet can be wired on power supply (power source) (not shown) via one or more, and is encouraged by the control unit (not shown).In the above-described embodiments, maintaining body can be provided with the spring 342 that acts on lever 306.Spring promotes lever and rotates on the direction away from magnet around pivot 326, thereby serves as auxiliary force when magnet is energized the execution release movement.Must be by the power that spring showed, act on lever 306 less than the performed maintenance effect of magnet, but being enough to (common with the power that electromagnet produces) truck live lever 306 makes its notch portion 309 act on Connection Element 304, so that Connection Element 304 shifts out from the position of projection P below, thereby allow to discharge Connection Element.Connection Element should be allowed to along its horizontal direction mobile slightly.
As shown in Figure 1, between the interior leg (notch portion 309) of " U " of lever 306 shape extension and Connection Element 304, there is the gap.This gap is preferably designed to and allows lever 306 to obtain a certain speed before butt Connection Element 304.Thereby, being connected on the Connection Element and making it before transversely direction moves at lever 306, lever 306 is loaded momentum and kinetic energy by means of spring and synthetic magnetic force.
Preferably, projection P can be provided with the insert p (Fig. 3) of one or more shapes and Connection Element 304 complementations, and described insert p is made by low-friction material, to obtain suitable maintenance and level and smooth release movement.
In addition, a plate 360 (Fig. 2) is attached on the lower part of lever 306.Plate should be attached on the lever in the bevelled mode, to guarantee to realize the plane contact with magnet unit 308.As selection, magnet unit 308 can be fixed in the mode of flexibility in the shell, to guarantee described plane contact.
In another alternative embodiment (not shown) of the present invention, second far-end 312 of lever comprises permanent magnet.In this configuration, when the excitation electromagnet, permanent magnet will rotate with lever.
As can see from Figure 3, Connection Element 304 can form the bar that has straight line portion, and described straight line portion has arm or column 352 (only having shown one) in its end.These columns can be rotatably fixed on the moving part, on the releasable roll bar of the overturning protection system during for example automobile is used.Preferably, the center of column axis and straight line portion 354 can have little deviation, to produce along the directive effect relative with the release direction of relevant projection P in the power effect of Connection Element.
In this embodiment, Connection Element is shown as " standing " configuration, and straight line portion shows as a top of element here, and column 352 (only being shown as) shows as the lower part of element.But a kind of alternative of this configuration is to arrange Connection Element in the mode of " suspension ", and wherein Connection Element is with respect to the axis Rotate 180 degree of straight line portion, and column extends upward.
Fig. 4 has disclosed the details of relevant maintenance/release function in Fig. 1 enlarged section.A part that has only shown lever 306 has wherein shown two fovea superior oral areas 309,310.Between notch portion, shown Connection Element 304, it is kept by projection P by insert p.Preferably, between the edge of the center of Connection Element and projection/insert P/p, there is a departure distance " A ", to guarantee suitable maintenance function.Between notch portion 309 and Connection Element, clearly illustrate a play, thereby guarantee that lever 306 is enough to be energized when its release movement.
After a release movement, in the slit " S " that Connection Element 304 is pushed the base member (see figure 1), system can obtain to recover again.Lever 306 anticlockwise directions rotation then, up to its plate 360 (Fig. 2) butt magnet unit 308, and by the maintenance of described unit.
Releasable maintaining body 302 can also have the manual releasing function.If have power-fail or fault, this manual function needs.Preferably, a far-end of lever 306 can be arrived by instrument, and described instrument rotates to lockset position of coupler with lever 306 from latched position, and discharges Connection Element 404.Releasable maintaining body 302 can also provide to shell 328 in-to-ins inlets, makes far-end 312 to be arrived by instrument, and described instrument rotates to lockset position of coupler with lever 306 from latched position, and discharges Connection Element 404.
Fig. 5 is the lateral plan of releasable maintaining body and the partial cross-section of the embodiment of the further replacement of the Connection Element that is positioned at latched position.Fig. 6 is the lateral plan of releasable maintaining body shown in Fig. 5 and the partial cross-section of Connection Element when lockset position of coupler.Fig. 7 be among Fig. 5 releasable maintaining body and the partial cross-section of Connection Element when lockset position of coupler etc. the axle transparent view.
With reference to these accompanying drawings 5-7, shown that another is used to lock and discharge the releasable maintaining body 402 of Connection Element 404.But releasable maintaining body 402 comprises the holding device that is used for Connection Element 404 is remained on the projection or notch portion 410 forms of far-end on the latched position, that be positioned at pivot rotaring lever 406.Lever 406 has and is used to prevent that described lever 406 from moving to the lockset position of coupler device of (as shown in Figure 6) from latched position (as shown in Figure 5), and its magnetic attraction by for example permanent magnet provides.
Lever 406 can bear the influence of the magnetic force of described permanent magnet; This magnetic force remains on latched position with lever 406.The axis of described pivot 426 preferably with magnet arrangement on same base member or shell.Releasable maintaining body 402 comprises the combination magnet unit 408 that has permanent magnet and electromagnet.Electromagnet can be wired on the power supply (not shown) via one or more, and is encouraged by the control unit (not shown).
The same with the foregoing description, maintaining body can be provided with the spring 442 that acts on lever 406.Spring promotes lever and rotates on the direction away from magnet around pivot 426, thereby serves as auxiliary force when magnet is energized the execution release movement.Must be by the moment that spring showed, act on lever 406 less than magnet performed hold torque or effect, but being enough to (common with the moment that electromagnet produces) truck live lever 406 makes it to withdraw and keeps the notch portion 410 of Connection Element 404, thereby allow the upwards directional slits " S " of Connection Element 404 in the base member, shift out from the latched position of notch portion 410 belows.When promoting Connection Element 404 downwards in slit " S ", second notch portion 409 that is positioned at the Connection Element below will be assisted the recovery again of maintenance effect, thereby cause lever 406 to be similar to the anticlockwise direction rotation of previous embodiment ground.
Can also further improve the release movement of Connection Element 404 by on notch portion 410 surfaces that contact with Connection Element, forming slope or chamfering.In this embodiment of the present invention, the vertical cross-section thickness of notch portion 410 is reducing on the direction of the end of notch portion 410.Utilize slope or chamfer surface, help to reduce the contact friction force between Connection Element and the notch portion.Those skilled in the art will be appreciated that the weight/HP ratio (specific load) that utilizes Connection Element 404 to put on notch portion and the surface characteristics of contact member, can calculate the best angle of chamfering.
In order to discharge Connection Element 404,, can reduce the magnetic attraction of permanent magnet by the phase anti-magnetic that utilizes electromagnet to form.Connect electromagnet, the magnetic field that produces opposing and weaken magnetic field of permanent magnet is so that the summation of the side-friction force between the attractive force of permanent magnet and lever 406 and the Connection Element 404 is overcome by the turning effort that spring force and Connection Element 404 produce.Lever to lockset position of coupler, and discharges Connection Element 404 (shown in Fig. 6 and 7) with right-hand revolution then.Spring 442 remains on lockset position of coupler away from permanent magnet with second far-end 412 of lever 406.
Under the situation that Connection Element is not stretched in advance by the object that will lock, second notch portion can assist Connection Element to discharge when lever 406 is rotated.As shown in Figure 5, between second notch portion 409 of the extension of lever 406 and Connection Element 404, there is the gap.This gap is preferably designed to and allows lever 406 to obtain a certain speed before butt Connection Element 404.Thereby, be connected on the Connection Element and because its cantilever shape and before the mobile Connection Element, lever 406 is loaded momentum and kinetic energy by means of spring and synthetic magnetic force at lever 406.
Be understood that, in releasable maintaining body, in its assembling latched position, the contact point of Connection Element on lever may depart from the central axis of lever pivot, like this, Connection Element applies turning effort around pivot center axes to lever, and this turning effort promotes lever and arrives lockset position of coupler from latched position, perhaps, turning effort also can be designed to assist lock function.
With reference to Fig. 8 and 9, shown the releasable maintaining body 60 that is used to lock and discharge Connection Element 4, described Connection Element 4 engages an adapter bar 61.Releasable maintaining body 60 comprises the holding device that is used for Connection Element 4 is remained on tiltable roll bar adapter 62 forms of latched position; be used to prevent that roll bar adapter 62 moves to lockset position of coupler from latched position device from being provided by the magnetic attraction of permanent magnet; and configuration like this; in latched position, roll bar adapter 62 is promoted towards lockset position of coupler by adapter bar 61 and Connection Element 4.Roll bar adapter 62 can bear the influence of the magnetic force of permanent magnet; This magnetic force remains on latched position with roll bar adapter 62.Releasable maintaining body 60 comprises combination magnet unit 8, and it comprises permanent magnet and electromagnet.Electromagnet is connected on the power supply (not shown) via electric wire 11, and is encouraged by the control unit (not shown).
Releasable maintaining body 60 comprises shell 64, and shell 64 is formed with inclined-plane extension 66 on inwall.Following far-end at adapter bar 61 is formed with footing part 68.Footing part 68 is suitable for moving contact inclined-plane extension 66.
In latched position, the footing part 68 of adapter bar 61 is locked between inclined-plane extension 66 and the wheel 69, a described part of taking turns 69 formation roll bar adapters 62.Roll bar adapter 62 is remained on latched position by permanent magnet.
In order to discharge Connection Element 4, electromagnet is energized, and produces the magnetic field opposite with magnetic field of permanent magnet, and the resultant magnetic field is not strong enough to and maintains roll bar adapter 62.So roll bar adapter 62 will be away from 61 rotations of adapter bar.Adapter bar 61 slides along inclined-plane extension 66, manifests inclined-plane extension 66 up to adapter bar 61, and Connection Element 4 and adapter bar 61 just are released.Can use spring roll bar adapter 62 to be remained on the lockset position of coupler of opening.At the lockset position of coupler of opening, adapter bar 61 can turn back in the shell 64, and bar adapter 61 will contact roll bar adapter 62, and latched position is got back in 62 rotations of roll bar adapter.
With reference to Figure 10 and 11, shown the releasable maintaining body 110 that is used to lock and discharge Connection Element 4.Releasable maintaining body 110 comprises the holding device that is used for Connection Element 4 is remained on two pivot rotaring lever 112,114 forms of latched position, be used to prevent that two pivot rotaring levers 112,114 move to lockset position of coupler (as shown in figure 11) from latched position (as shown in figure 10) device from being provided by the magnetic attraction of permanent magnet, and configuration like this, in latched position, two pivot rotaring levers 112,114 are connected element 4 and promote towards lockset position of coupler.Pivot rotaring lever 112 can bear the influence of the magnetic force of permanent magnet; This magnetic force remains on latched position with two pivot rotaring levers 112,114.Releasable maintaining body 110 comprises combination magnet unit 8, and it comprises permanent magnet and electromagnet.Electromagnet is connected on the power supply (not shown) via electric wire 11, and is encouraged by the control unit (not shown).
Releasable maintaining body 110 comprises shell 116, and shell 116 is formed with and enters slit (access slot) 117.Pivot rotaring lever 112 pivots around the pivotal axis 118 that is not fixed on the shell 116, and an end of pivot rotaring lever 114 pivots around pivotal axis 118, and the other end of pivot rotaring lever 114 pivots around the pivotal axis 113 that is fixed on the shell 116.This mechanism 110 comprises that also 119,121, two guide members 119,121 of two guide members are arranged on the both sides of lever 112, and contacts slidably with lever 112.
In order to discharge Connection Element 4, electromagnet is energized, and produces the magnetic field opposite with magnetic field of permanent magnet, and the resultant magnetic field is not strong enough to and can maintains two pivot rotaring levers 112,114.So pivot rotaring lever 112,114 will be away from 8 rotations of adapter bar magnet unit, Connection Element 4 is released, and moves along direction 52.Can use spring that these pivot rotaring levers 112,114 are remained on the lockset position of coupler of opening.At the lockset position of coupler of opening, Connection Element 4 can turn back to entering in the slit 117 of shell 116, and Connection Element 4 can rotate 112, two pivot rotaring levers of engagement lever 112,114 gets back to latched position.
With reference to Figure 12-14, shown the releasable maintaining body 120 that is used to lock and discharge Connection Element 4.Releasable maintaining body 120 comprise be used for Connection Element 4 remain on latched position two pivot rotaring lever 122,124 forms holding device and stop element 126, be used to prevent that two pivot rotaring levers 122,124 move to lockset position of coupler (as shown in figure 14) from latched position (as shown in figure 12) device from being provided by the magnetic attraction of permanent magnet, and configuration like this, in latched position, two pivot rotaring levers 122,124 are connected element 4 and promote towards lockset position of coupler.Pivot rotaring lever 124 can bear the influence of the magnetic force of permanent magnet; This magnetic force remains on latched position with two pivot rotaring levers 122,124.Releasable maintaining body 120 comprises combination magnet unit 8, and it comprises permanent magnet and electromagnet.Electromagnet is connected on the power supply (not shown) via electric wire 11, and is encouraged by the control unit (not shown).
Releasable maintaining body 120 comprises shell 128, and shell 128 is formed with and enters slit 127.Pivot rotaring lever 122,124 pivots around the pivotal axis 130 that is not fixed on the shell 128.One end of pivot rotaring lever 124 pivots around pivotal axis 130, and the other end of pivot rotaring lever 124 pivots around the pivotal axis 132 that is fixed on the shell 128.This mechanism 120 also comprises and stops element 126, describedly stops the end that element 126 is arranged on lever 122, and contacts slidably with lever 122.
In order to discharge Connection Element 4, electromagnet is energized, and produces the magnetic field opposite with magnetic field of permanent magnet, and the resultant magnetic field is not strong enough to and can maintains two pivot rotaring levers 122,124.So pivot rotaring lever 122,124 will be away from 8 rotations of adapter bar magnet unit, Connection Element 4 is released, and moves along direction 52.Can use spring that these pivot rotaring levers 122,124 are remained on the lockset position of coupler of opening.At the lockset position of coupler of opening, Connection Element 4 can turn back to entering in the slit 127 of shell 128, and Connection Element 4 can rotate 122, two pivot rotaring levers of engagement lever 122,124 gets back to latched position.
With reference to Figure 15 and 16, shown the releasable maintaining body 140 that is used to lock and discharge Connection Element 4.Releasable maintaining body 140 comprises the holding device that is used for Connection Element 4 is remained on three pivot rotaring lever 142,144,146 forms of latched position, be used to prevent that pivot rotaring lever 142,144,146 moves to lockset position of coupler (as shown in figure 16) from latched position (as shown in figure 15) device from being provided by the magnetic attraction of permanent magnet, and configuration like this, in latched position, pivot rotaring lever 142,144,146 is connected element 4 and promotes towards lockset position of coupler.Pivot rotaring lever 146 can bear the influence of the magnetic force of permanent magnet; This magnetic force remains on latched position with described pivot rotaring lever 142,144,146.Releasable maintaining body 140 comprises combination magnet unit 8, and it comprises permanent magnet and electromagnet.Electromagnet is connected on the power supply (not shown) via electric wire 11, and is encouraged by the control unit (not shown).
Releasable maintaining body 140 comprises shell 148, and shell 148 is formed with and enters slit 147.Pivot rotaring lever 142 pivots around the pivotal axis 150 that is fixed on the shell 148.One end of pivot rotaring lever 144 pivots around the pivotal axis 152 that is fixed on the shell 148, the other end of pivot rotaring lever 144 around not being fixed on the shell 148 but the pivotal axis 154 that is connected in the interlude of lever 146 pivot.One end of lever 146 is connected in lever 142 by pivot 156.Pivot 156 is not connected on the shell 148.
In order to discharge Connection Element 4, electromagnet is energized, and produces the magnetic field opposite with magnetic field of permanent magnet, and the resultant magnetic field is not strong enough to and can maintains three pivot rotaring levers 142,144,146.So described pivot rotaring lever 142,144,146 will be around pivot rotation separately, Connection Element 4 is released, and moves along direction 52.Can use spring that these pivot rotaring levers 142,144,146 are remained on the lockset position of coupler of opening.At the lockset position of coupler of opening, Connection Element 4 can turn back to entering in the slit 147 of shell 148, and Connection Element 4 can rotate 142, three pivot rotaring levers of engagement lever 142,144,146 gets back to latched position.
With reference to Figure 17-20, shown the releasable maintaining body 170 that is used to lock and discharge Connection Element 4.Releasable maintaining body 170 comprises holding device and the sliding members 174 that is used for Connection Element 4 is remained on pivot rotaring lever 172 forms of latched position, be used to prevent that pivot rotaring lever 172 and sliding members 174 move to lockset position of coupler (as shown in figure 19) from latched position (as shown in figure 17) device from being provided by the magnetic attraction of permanent magnet, and configuration like this, in latched position, pivot rotaring lever 172 and sliding members 174 are connected element 4 and spring element 176 promotes towards lockset position of coupler.Sliding members 174 can bear the influence of the magnetic force of permanent magnet; This magnetic force remains on latched position with pivot rotaring lever 172 and sliding members 174.Releasable maintaining body 170 comprises combination magnet unit 8, and it comprises permanent magnet and electromagnet.Electromagnet is connected on the power supply (not shown) via electric wire 11, and is encouraged by the control unit (not shown).
Releasable maintaining body 170 comprises shell 178, and described shell 178 is formed with the vertical substantially lower channel 182 that enters slit 177 and extend perpendicular to this slit 177 substantially that is positioned at top.Lower channel 182 is along the only about half of step 184 that is formed with of the length of this passage 182, and like this, passage 182 has from step 184 towards the upwardly extending narrow section in the side of shell 178 ends.Sliding members 174 is accommodated in the wider portion of lower channel 182.Sliding members 174 is formed with beveled distal end 190.Pivot rotaring lever 172 pivots around the pivotal axis 180 that is attached to shell 178.Spring 176 is arranged between magnet unit 8 and the beveled distal end 190, and in latched position, compression spring 176 promotes sliding members 174 on away from the direction of magnet unit 8.In latched position, the following end in contact step 184 of lever 172.
In order to discharge Connection Element 4, electromagnet is energized, and produces the magnetic field opposite with magnetic field of permanent magnet, and the resultant magnetic field is not strong enough to the resistance that can overcome spring 176 and maintains sliding members 174.Sliding members 1 74 moves on away from the direction of magnet unit 8, and by step 184 lifting pivot rotaring levers 172, so lever 172 rotates away from adapter bar magnet unit 8 along direction 186, Connection Element 4 is released, and moves along direction 52.
At the lockset position of coupler of opening, Connection Element 4 can turn back to entering in the slit 177 of shell 178, and Connection Element 4 is engagement lever 172, and latched position is got back in pivot rotaring lever 172 rotations, thus butt step 184.Lever 172 is formed with substantially ' C ' shape end 173, and when element 4 was inserted back in the slit 177, element 4 touched ' lower part of C ' shape end.Should be understood that described most of embodiment comprises similarly ' C ' shape end, utilize to be somebody's turn to do ' C ' shape end can move to latched position from lockset position of coupler with mechanism.
With reference to Figure 21-23, shown the releasable maintaining body 190 that is used to lock and discharge Connection Element 4.Releasable maintaining body 190 comprises the holding device that is used for Connection Element 4 is remained on two pivot rotaring lever 192,194 forms of latched position, be used to prevent that two pivot rotaring levers 192,194 move to lockset position of coupler (as shown in figure 23) from latched position (as shown in figure 21) device from being provided by the magnetic attraction of permanent magnet, and configuration like this, in latched position, two pivot rotaring levers 192,194 are connected element 4 and promote towards lockset position of coupler.Pivot rotaring lever 192 can bear the influence of the magnetic force of permanent magnet; This magnetic force remains on latched position with two pivot rotaring levers 192,194.Releasable maintaining body 190 comprises combination magnet unit 8, and it comprises permanent magnet and electromagnet.Electromagnet is connected on the power supply (not shown) via electric wire 11, and is encouraged by the control unit (not shown).
Releasable maintaining body 190 comprises shell 196, and shell 196 is formed with and enters slit 197.Two pivot rotaring levers 192,194 pivot around the pivotal axis 198,200 that is connected on the shell 196 separately.
In order to discharge Connection Element 4, electromagnet is energized, and produces the magnetic field opposite with magnetic field of permanent magnet, and the resultant magnetic field enough can not keep two pivot rotaring levers 192,194 by force.So pivot rotaring lever 192 is in the counterclockwise direction 202 away from adapter bar magnet unit 8 rotation, pivot rotaring lever 194 is discharged by lever 192.So lever 194 is 204 rotations along clockwise direction, Connection Element 4 is released, and moves along direction 52.Can use respective springs that two pivot rotaring levers 192,194 are remained on the lockset position of coupler of opening.
At the lockset position of coupler of opening, Connection Element 4 can turn back to entering in the slit 197 of shell 196, and Connection Element 4 can rotate 194, two pivot rotaring levers of engagement lever 192,194 gets back to latched position.
Figure 24 has disclosed the major part in the releasable maintaining body, for example lever 306 and Connection Element 304.Here, lever 306 is maintained at latched position by means of permanent magnet.In addition, shown and be used for by encourage the configuration of releasable maintaining body by means of electric pulse excitation electromagnet coils.Pulse can be provided by air bag electronic controller unit (ECU).Major part in an illustrated embodiment is an electronic controller unit 212, and it provides power by voltage source 210.Free (freewheeling) type diode 211 is parallel to two lead-in wires of magnet unit 308 coils in interconnection ECU and the low-yield actuator (LEA) 213 to be arranged, and links to each other with them.
Coil and the ferromagnetic material that links with it have intrinsic resistance and inductance.Be lost in the whirlpool inducing current in the coil ferromagnetic material from the part energy that narrow momentary impulse applied of air bag ECU, part energy is lost into heat, and remaining contribute energy is given the electromagnetic field around the coil.When triggering, ECU manages to provide at LEA coil two ends the electric current (or voltage) of qualification owing to sensor input (charging zone) as air bag ECU.
Electric current increases towards target current, finally is stabilized in this electric current, thus make electromagnet set up can be completely or partially in and the magnetic field of the magnetic field of permanent magnet among the LEA.
When energizing signal was exported from air bag ECU end (region of discharge), inductance energy stored in the LEA electromagnet was owing to diode keeps an electric current.Although because electromagnetic field its weaken along with reducing of electric current, it is extended in time, so this has prolonged the time length of the release signal of LEA effectively.
Should be understood that the control unit in the foregoing description that in suitable place, LEA also can be by other control unit excitation.
In addition, should be appreciated that the confining force in the foregoing description preferably kept by permanent magnet.But this confining force can also produce by means of the securing device of recovery again of snap fasteners or quick-attachable coupling, " Velcro " lock, non-hardening glue or other any appropriate.