CN100432364C - Rotary pawl latch - Google Patents
Rotary pawl latch Download PDFInfo
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- CN100432364C CN100432364C CNB2004800260361A CN200480026036A CN100432364C CN 100432364 C CN100432364 C CN 100432364C CN B2004800260361 A CNB2004800260361 A CN B2004800260361A CN 200480026036 A CN200480026036 A CN 200480026036A CN 100432364 C CN100432364 C CN 100432364C
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- ratchet
- trigger
- slide block
- screw rod
- housing
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Abstract
Latches including a housing, a rotary pawl, catch means for releasably holding the pawl in a closed configuration, and means for operating the catch means are disclosed. The pawl is pivotally attached to the housing and is rotationally movable between a closed or engaged configuration and an open or disengaged configuration. The pawl is provided with a torsion spring member that biases the pawl toward the open or disengaged configuration. In some embodiments the catch means includes a locking member. In other embodiments the catch means includes a pivotally movable trigger. The means for operating the catch means may be electrically powered.
Description
Technical field
The present invention relates to be used for latch system field that two parts are fixed together.
Background technology
In many application, rely on latch assembly that the article such as panel (panel), door and doorframe are fixed together.For example, counter, cabinet, closet, chamber and similar item can be used latch fixation.An important use of breech lock is at automotive field, in this field, requires and need enter the automobile chamber, such as, for example, the luggage case of vehicle or compartment, and such as the interior chamber of glove box.In addition, in many application,, require the breech lock of electricity operation owing to need long-range or button input, coding enter, do not have key and enter or enter monitoring.Used to be used for the various breech locks that panel is closed thing, wherein wanted fastened or be fixed to static panel, doorframe or chamber main body such as one of panel of swinging door or similar item.Though many latch assemblies known in the state of the art are not found a kind of teaching or have been proposed unique property of the present invention or realized advantage of the present invention.
Summary of the invention
The present invention includes housing, rotary pawl, be used for the device that releasedly this ratchet remained on the acquisition equipment of closing structure and be used to operate this acquisition equipment.Be attached to pawl pivot housing and can close or joint construction and open or disengaged configuration between rotatably the motion.Ratchet provides towards opening or the torsionspring member of disengaged configuration biasing ratchet.Acquisition equipment comprises and can move between extended position and retracted position and by the locking component towards extended position spring biasing.The action of device that can be by being used to the to operate acquisition equipment locking component of withdrawing, it is electric solenoid in the illustrated embodiment.When the down periods ratchet clashes into retainer, ratchet is moved to closes structure.In case ratchet is being closed structure, locking component engages the protrusion that protrudes from ratchet, closes structure so that ratchet remained on.Catch to a part of cooperation of ratchet and housing retainer at this moment so that latch fixation is arrived retainer.Excitation solenoid retraction locking component, it allows ratchet to rotate under the power effect of torsionspring and opens structure.Thereby, breech lock can from retainer break away from and for example the chamber can be opened.
Another embodiment of the present invention comprises housing, rotary pawl, be used for the drive unit that releasedly this ratchet remained on the acquisition equipment of closing structure and be used to operate this acquisition equipment.Be attached to pawl pivot housing and can close or joint construction and open or unlatching structure between motion rotatably.Ratchet provides towards opening or the torsionspring member of disengaged configuration biasing ratchet.Acquisition equipment comprise can be between bonding station and disengaging configuration pivotally motion and by trigger towards the biasing of bonding station spring.Can trigger movement be arrived disengaging configuration by the action of drive unit, it is motor driver in the example that illustrates.When at down periods ratchet bump rams (also being known as retainer), ratchet is moved to closes structure.In case ratchet is being closed structure, the recess in the trigger engagement pawl is closed structure so that ratchet remained on.The groove that this moment, ram was trapped in the ratchet is interior thus breech lock and ram are fixed together.Excitation driver pivotally arrives disengaging configuration with trigger movement, and it allows ratchet to rotate under the power effect of torsionspring and opens structure.Ram can be subsequently from breech lock break away from and for example the chamber can be opened.
An object of the present invention is to provide a kind of rotary pawl latch, it has and is used for keeping the locking component of rotary pawl at closing structure, and wherein said locking component is supported on the position near the joint between described ratchet and the described locking component.
Another object of the present invention provides a kind of rotary pawl latch, and it has and is used for keeping the locking component of rotary pawl at closing structure, and wherein said breech lock is designed for the frictional resistance that reduces the motion of locking component.Another bright purpose of this law provides a kind of rotary pawl latch, and it has and is used for keeping the locking component of rotary pawl at closing structure, and wherein said locking component supports at least one and is used for roller with described engaged pawl.
Another object of the present invention provides a kind of rotary pawl latch, and it has and is used for keeping the locking component of described rotary pawl at closing structure, and wherein this locking component is supported by at least one roller.
Another object of the present invention provides a kind of rotary pawl latch, and it has and is used for keeping the locking component of described rotary pawl at closing structure, and wherein this locking component is supported for pivoting action.
Another object of the present invention provides a kind of rotary pawl latch, and it has and is used for keeping the locking component of described rotary pawl at closing structure, and wherein this locking component is moved so that loosen described ratchet by the screw rod that is driven by motor.
Another object of the present invention provides a kind of rotary pawl latch, and it has and is used for keeping the locking component of described rotary pawl at closing structure, and wherein this locking component is with distance ratchet and the striker junction angle engagement pawl less than 180 degree.
These purposes and other purposes that this law is bright will be seen significantly from following manual and accompanying drawing.
Description of drawings
Fig. 1-18 is the view according to first embodiment of the latch assembly with two rollers of the present invention.
Figure 19-28 is the view according to second embodiment of the latch assembly with three rollers of the present invention.
Figure 29-48 is that this latch assembly has the solid support part according to the view of the 3rd embodiment of latch assembly of the present invention, and in the range of movement of locking component between withdrawal and extended position, locking component leans against on this solid support part always.
Figure 49 be illustrated in locking structure according to view around the 4th embodiment of latch assembly of the present invention.
Figure 50 be illustrated in unlatching structure according to view around the 4th embodiment of latch assembly of the present invention.
Figure 51-52 is for being illustrated in the view according to the 4th embodiment of latch assembly of the present invention of unlatching structure.
Figure 53-54 is for being illustrated in the view according to the 4th embodiment of latch assembly of the present invention of locking structure.
Figure 55 is the exploded view according to the 4th embodiment of latch assembly of the present invention.
Figure 56-60 is for being illustrated in the cross sectional view according to the 4th embodiment of latch assembly of the present invention in different operating stage of finishing with locking structure beginning and with the unlatching structure.
Figure 61-62 is the imperfect view according to the 4th embodiment of latch assembly of the present invention of the geometry that shows ratchet in locking structure and unlatching are constructed and trigger spring.
Figure 63-64 is the view according to the housing of the 4th embodiment of latch assembly of the present invention.
Figure 65-66 is the view according to the housing cover of the 4th embodiment of latch assembly of the present invention.
Figure 67-69 is the view of the ram that uses with latch assembly according to the present invention.
Figure 70-71 is the view according to the ratchet of the 4th embodiment of latch assembly of the present invention.
Figure 72-76 is the view according to the screw rod of the actuator assembly of the electricity operation of the 4th embodiment of latch assembly of the present invention.
Figure 77 is the isometric view according to the trigger pivot pin of the 4th embodiment of latch assembly of the present invention.
Figure 78-81 is the view according to the slide block of the actuator assembly of the electricity operation of the 4th embodiment of latch assembly of the present invention.
Figure 82-83 is the view according to the coupling bar of the mechanical replacement device of the 4th embodiment of latch assembly of the present invention.
Figure 84-85 is the view according to the pawl pivot pin of the 4th embodiment of latch assembly of the present invention.
Figure 86-87 is the view according to the bow tie coupling of the actuator assembly of the electricity operation of the 4th embodiment of latch assembly of the present invention.
Figure 88-90 is the view according to the ratchet torsionspring of the 4th embodiment of latch assembly of the present invention.
Figure 91-93 is the view according to the trigger torsionspring of the 4th embodiment of latch assembly of the present invention.
Figure 94-96 is the view according to the 4th half one of the trigger of the 4th embodiment of latch assembly of the present invention.
Figure 97-99 is the view according to second half one of the trigger of the 4th embodiment of latch assembly of the present invention.
Figure 100 be illustrated in locking structure according to view around the 4th embodiment of latch assembly of the present invention, wherein remove case lid to show microswitch.
Figure 101 be illustrated in unlatching structure according to view around the 4th embodiment of latch assembly of the present invention, wherein remove case lid to show microswitch.
Figure 102-103 is the view according to the microswitch housing of the 4th embodiment of latch assembly of the present invention.
The view of the microswitch that Figure 104-105 uses with the 4th embodiment according to latch assembly of the present invention.
Figure 106 is the cross sectional view according to the 5th embodiment of latch assembly of the present invention that is illustrated in locking structure.
Figure 107 is the cross sectional view according to the 5th embodiment of latch assembly of the present invention that is illustrated in unlatching structure.
Figure 108 is the exploded view according to the 5th embodiment of latch assembly of the present invention.
Figure 109 is the view according to another embodiment of latch assembly of the present invention, wherein removes housing cover to represent interior details.
Figure 110 to 111 is the view of Figure 109 illustrated embodiment, and its cover plate and ratchet are in the unlatching position.
Figure 112 to 113 is the view of Figure 109 illustrated embodiment, and its cover plate and ratchet are at locked position.
Figure 114 to 116 is the view of Figure 109 illustrated embodiment, wherein removes cover plate, microswitch, microswitch retainer and microswitch driver so that the locking order of latch operations to be shown.
Figure 117 to 118 is the view of Figure 109 illustrated embodiment, wherein removes cover plate, microswitch, microswitch retainer and microswitch driver so that the unlatching order of latch operations to be shown.
Figure 119 to 122 is the view of the slide block of Figure 109 illustrated embodiment.
Figure 123 to 124 is the view of the rotary pawl of Figure 109 illustrated embodiment.
Figure 125 to 126 is the view of the trigger of Figure 109 illustrated embodiment.
Figure 127 is used to reset the isometric view of compression spring of slide block of Figure 109 illustrated embodiment.
Figure 128 to 134 is the view of the microswitch driver of Figure 109 illustrated embodiment.
Figure 135 to 137 is the view of the microswitch retainer of Figure 109 illustrated embodiment.
Figure 138 to 139 is the view of the microswitch of Figure 109 illustrated embodiment.
The specific embodiment
With reference to figure 1-18, can see breech lock 100 according to the first embodiment of the present invention.Breech lock 100 comprises breech lock housing 102, ratchet 104, locking component 106 and is used for the selectively device of motion locking member and engaged pawl and disengaging.In the illustrated embodiment, solenoid component 108 usefulness act on the selectively device of motion locking member and engaged pawl and disengaging.
In the example that illustrates, breech lock 100 is depicted as and is used as with respect to retainer 208 fixed components 200.Breech lock 100 is closed the occasion that component of thing is fixed on certain position applicable to needs with one or more usually.In addition, member 200 can be movable or static.In addition, breech lock 100 can be according to specific application with any towards installation.
Preferably, housing 102 has the part of opening end when ratchet 104 sealing pawl slot 158 when closing structure.In addition, housing must be suitable for allowing when opening structure when ratchet 104 the expedite passage of pawl slot 158.In first embodiment, housing 102 has the top part 110 that provides as observed U-shaped breach of opening or recess 112 in section.Closing when structure when ratchet 104, locating from the lateral side of solenoid component 108 U-shaped breach farthest the end of opening as sealing pawl slot 158.When ratchet 104 is being opened when structure, U-shaped breach 112 open the expedite passage that end allows pawl slot 158.The U-shaped breach is of a size of and makes that when by contacting with retainer 208 ratchet 104 from opening tectonic movement to closing when constructing, housing 102 will can not be interfered the motion of retainer 208 with respect to housing 102.Housing 102 has the bottom part 114 with clam shell mode and top part 110 couplings.First groove 116 is provided in the part of the upper casing part 110 with U-shaped breach 112.When the part of ratchet 104 stretches into and during overlapping U-shaped breach 112, groove 116 receives the part of ratchets 104 and allows ratchet 104 to be supported rotatably by housing 102, does not interfere rotatablely moving of ratchet.Lower case part 114 has corresponding groove, and it provides the gap, is used for ratchet 104 and moves rotatably with respect to housing 102 in the opereating specification of its motion, and any parts that are not subjected to lower case part 114 are interfered.
U-shaped breach 112 is orientated and makes opening of U-shaped breach 112 hold the direction of pointing at the longitudinal axis of axle that is substantially perpendicular to solenoid 108 or plunger 120.In the illustrated embodiment, the longitudinal axis of the axle of solenoid 108 or plunger 120 is in the plane of ratchet 104 rotations basically.It is vertical and pass through the plane at the center of ratchet 104 that the plane of ratchet 104 rotation is defined as rotation with ratchet 104.
The afterbody 172,174 of torsionspring 162 is assembled to and puts along the step 182,184 of the wide portions formation by the groove 117 in the zone of pivot pin respectively.The afterbody 172,174 of torsionspring 162 is along step 182,184 location, and the cross bar 168 of torsionspring 162 applies power on the arm portion 160 of ratchet 104, and it is towards opening or unlatching structure biasing ratchet 104.
By excitation solenoid 108 drive bolt lock sets 100.Can use the switch (not shown) excitation solenoid 108 of long range positioning.When excitation solenoid 108, locking component 106 withdrawals make locking component 106 move to such an extent that do not engage with ridge or protrusion 156, discharge ratchet 104 thus to pivot.The biasing that ratchet torsionspring 162 provides is rotated towards it ratchet 104 at the locked position shown in Fig. 1-8 and 10 from it at the structure of opening shown in Figure 11-14, at locked position, the rod part 134 of retainer 208 by pawl slot 158 and 112 cooperations of U-shaped breach catch.The part of the opening of pawl slot 158 groove 116 in the lateral side that is formed on U-shaped breach 112 is taken in the rotation of ratchet 104 out of, make the opening of pawl slot 158 basically towards the pedestal 146 of retainer member 208, thereby allow retainer member 208 to break away from from ratchet 104.Can open panel 200 by panel 200 is moved to open position subsequently.
Provide the erecting device that is fit to so that latch assembly 100 is remained on panel or the installed surface.For example, can realize latch assembly 100 is installed to panel with nut 230 with by the bolt 232 of housing 102 and panel 200.In Fig. 5-8, breech lock 100 is attached to panel 200 towards the side away from retainer 208.In this configuration, the rod part 134 of retainer 208 is passed through groove 234 with engages receptacle 100.In Figure 15-18, breech lock 100 is attached to the side of panel 200 towards retainer 208.In this configuration, groove 234 is optional.
When panel 200 was being closed, the opening surface of pawl slot 158 was to retainer 208 and without hindrance by the lateral side of U-shaped breach 112.When panel 200 was firmly closed, retainer 208 was received in the groove 158 and impulse click 104, caused ratchet 104 to rotate towards the structure of closing shown in Fig. 1-8 and 10.At this moment, even without excitation solenoid 122, locking component 106 is partly withdrawn, and moves to the position of extending fully because protrusion 156 and/or ratchet body 154 prevent locking component 106.When ratchet 104 rotated to fastening position, protrusion 156 was skipped locking component 106, and permission locking component 106 extends under the biasing of spring 188 and moves in protrusion 156 back.In case locking component 106 is at extended position, its flat face side 180 of catching ridge 156 to be remaining on the fastening position shown in Fig. 1-8 and 10 with ratchet 104, thereby panel 200 is fixed on fastening position.
Tend to the strong load that impels panel 200 to open if exist, high lateral force can cause locking component 106 and solenoid shaft 120 owing to the bending of excessive frictional force and solenoid shaft 120 engages, thereby by preventing locking component 106 withdrawals from the power that solenoid 108 obtains.In order to alleviate this problem, provide the device that is used at the position support locking member 106 that engages with ratchet 104 near locking component 106.In addition, also provide the device that is used to reduce to the frictional resistance of the withdrawal of locking component 106.In Fig. 1-18 illustrated embodiment, roller 236 provides all these functions.Each roller 236 has major diameter part 238, and small diameter portion 240 is stretched out from every side of major diameter part 238.Lower case part 114 has two chambeies 242, the part that is shaped as the corresponding roller 236 of coupling ground reception of each.Upper casing part 110 also provides a pair of chamber 244.The part that is shaped as corresponding one the outside at least minor diameter roller part 240 that receives roller 236 in each chamber.When upper casing part 110 and lower case part 114 fitted together with the clam shell form, their cooperations ground support rollers 236 was with motion rotatably, and at least a portion of outer surface that keeps major diameter roller part 238 simultaneously is without hindrance.Roller 236 directly is positioned at below the locking component 106, and locking component 106 bears against on the outer surface of major diameter roller part 238.Thereby roller 236 reduces frictional force between them by rolling friction is provided between locking component 106 and housing 102.Same by near support locking member 106 load situation of locking component 106, they have reduced the moment of deflection on the solenoid shaft 120.
As replacement scheme to two rollers 236, can be with by such as Dupon ' s DELRIN
TM(acetal homopolymer) or acetal copolymer are (for example
) the pillar of low friction material manufacturing be placed on below the locking component 106 with the geometry similar to Figure 29-48 illustrated embodiment, rub and near support locking member 106 load situation of locking component 106 reducing.
Except solenoid 108, breech lock 100 can provide handle with in solenoid failure or there is not under the situation of power of operate solenoid manually operated latch lock.Scheme or replenishing as an alternative to handle, the locking plug that can in design, add the mechanical key operation, the spin locking plug for example uses the cam arrangement of certain form to promote locking component 106 and protrusion 156 disengagings thus, opens under the situation of power failure to allow panel 200 thus.
With reference to figure 19-28, can see having three rollers according to the second embodiment 100a of latch assembly of the present invention.In the operation, except the difference that indicates below, breech lock 100a is similar to breech lock 100.Breech lock 100a does not have the clam shell housing.Alternatively, the housing of breech lock 100a is the version dimerous of the housing of the breech lock of disclosure in the U.S. Provisional Patent Application 60/318,639, and operation is identical with this breech lock in fact.In breech lock 100a, with the U-shaped support 106a replacement locking component or the lockplate 106 of the outer end that is provided at solenoid shaft 120a.Support 106a supports three roller 236a, 236b and 236c rotatably.Roller 236a and 236c are that major diameter roller and roller 236b are the minor diameter roller.Roller 236b is positioned at the cylindrical shaft 236d that supports by support 106a and goes up between roller 236a and the 236c.Roller 236a and 236c branch are opened enough far away, make that the flat surperficial 180a of the protrusion 156a of ratchet 104a can bear against on the outer surface of roller 236b when closing structure.Roller 236a and 236c bear against on the part of the housing below the support 106a.When the protrusion 156a that encourages solenoid with withdraw support 106a and therefore withdraw roller 236b and ratchet 104a breaks away from, from locking structure release ratchet 104a.Thereby by provide rolling friction between locking component and housing and ratchet, roller 236a, 236b and 236c reduce the frictional force between locking component 106 and housing 102 and between locking component and ratchet.Equally, by supporting bracket 106a and axle 236d near the load situation of support 106a and axle 236d, they have reduced the moment of deflection on the solenoid shaft 120a.
With reference to figure 29-48, can see the 3rd embodiment 100b according to latch assembly of the present invention.In the operation, except the difference that indicates below, breech lock 100b is similar to breech lock 100.Breech lock 100b has the solid support part 241 that is used for locking component 106b thereon of breasting always in the range of movement of locking component between withdrawal and extended position.Solid support part 241 be positioned at locking component 106b with on the opposite side of the side of the surperficial 180b that closes when structure contact ratchet 104b.Thereby solid support part 241 is support locking member 106b near the load situation of locking component 106b, thereby and its reduced moment of deflection on the solenoid shaft 120b of solenoid 108b.Solid support part 241 can integrate with housing 102b or it can be for being attached to the independent part of housing 102b.Solid support part 241 can be by above-mentioned identical low-friction material manufacturing.
In addition, the geometry of Figure 29-48 illustrated embodiment is different with the embodiment of front.In breech lock 100b, ratchet has the protrusion 156b that pawl slot 158b and defining is used for the flat surperficial 180b that engages with locking component 106b.Pawl slot 156b has the imaginary center line 250 that extension is intersected with the angle θ less than 180 degree with the imaginary plane 252 that limits with flat surperficial 180b by protrusion 156b.Preferably, angle θ is smaller or equal to 120 degree, and more preferably, angle θ is smaller or equal to 90 degree.This ratchet geometry allow to change housing 102b U-shaped breach 112b towards, make the end of opening of U-shaped breach 112b point to is becoming basically less than 90 directions of spending with the axle of solenoid 108b or the longitudinal axis of plunger 120b.In Figure 29-48 illustrated embodiment, U-shaped breach 112b be orientated make U-shaped breach 112b open end point to basically with the axle of solenoid 108b or the identical direction of longitudinal axis of plunger 120b.
As another embodiment that substitutes or make up the feature that some disclose above, also can provide by protrusion 156 and rotatably support the roller that contacts with locking component 106.
With reference to figure 49-105, can see breech lock 400 according to the first embodiment of the present invention.Breech lock 400 comprises breech lock housing 402, ratchet 404, trigger 406 and is used for the drive unit that selectively motion trigger and ratchet break away from.In the illustrated embodiment, actuator assembly 408 usefulness of electricity operation act on the selectively drive unit of motion trigger and ratchet disengaging.
Preferably, the form of housing 402 is the box of the various parts of reception breech lock 400.Breech lock 400 also can provide dividing plate 411 and 413 and multicell pallet 415, and it helps suitably to support and locate the various parts of breech lock in housing 402, and the overall strength that increases breech lock 400.Pallet 415 has the passage 417 of guide shoe 418 linear movements and the chamber 419 that holds motor 410.The part of screw rod 416 is positioned in the passage 417 and another part is positioned in the chamber 419.Divide the open walk 417 and the spacer 421 of chamber 419 to have groove 423, the part 425 of screw rod 416 is extended by groove 423.Screw rod 416 is included in the annular collar 511 and 513 on every side of part 425.The axle collar 511 and 513 and spacer 421 cooperation to prevent that basically screw rod 416 is in its longitudinal axis linear axial displacement.
The actuator assembly 408 of electricity operation comprises motor 410, bow tie coupling 414, screw rod 416 and slide block 418.In the illustrated embodiment, motor 410 is direct current (DC) motor, and it has the output shaft 420 that is energized rotation usually in response to motor.The polarity that oppositely supplies to the electric current of d.c. motor 410 causes the direction of rotation of output shaft 420 reverse.Motor 410 is received in the housing 402, and is installed in fixing position wherein.Bow tie coupling 414 is attached to output shaft 420, makes that bow tie coupling 414 rotates as a unit with axle 420 during the normal running of breech lock 400.Bow tie coupling 414 is positioned near the end of output shaft 420.Screw rod 416 has threaded part 424 and coupling part 422.Coupling part 422 forms the end of the most close motor 410 of screw rod 416.Coupling part 422 comprises the central longitudinal axis skew of a pair of and screw rod 416 and the finger-like ridge 426 that extends towards motor 410 abreast with the central longitudinal axis of screw rod 416.Bow tie coupling 414 has hub 429.In the breech lock 400 that assembles, the hub 429 of bow tie coupling 414 is assemblied between the ridge 426, the central longitudinal axis coaxial line of the rotation of hub and screw rod 416.Bow tie coupling 414 also has the wing 427 that extends radially outwardly from hub 429.The wing 427 is being positioned between the ridge 426 around the rotation of the bow tie coupling 414 that overlaps and the central longitudinal axis of screw rod 416 aspect their angle position.Thereby the rotation of bow tie coupling 414 makes the wing 427 engage with ridge 426, to cause screw rod 416 around its longitudinal axis rotation thus.Because bow tie coupling 414 rotates as a unit with axle 420, the rotation of axle 420 is delivered to screw rod 416 by the joint between the coupling part 422 of bow tie coupling 414 and screw rod 416.Thereby axle 420 rotations cause screw rod 420 in the direction rotation identical with axle 420.In the illustrative embodiment by breech lock 400 expressions, the rotation of the longitudinal axis of motor 410, axle 420, longitudinal axis, the rotation of bow tie coupling 414, the rotation of screw rod 416 and the central longitudinal axis of screw rod 416 of axle 420 all overlap.
The form of the threaded part 424 of screw rod 416 is to the threaded axle that extends away from the direction of motor 410 from coupling part 422.The spiral thread that the threaded part 424 of screw rod 416 provides pin thread, three times of pitch, has big relatively pitch.Slide block 418 has the boring 431 of passing through its length in the longitudinal axis extension of screw rod 416 at least in part.In the example that illustrates, boring 431 is fully by slide block 418.Boring 431 spiral threads that provide negative thread, three times of pitch, have relative coarse pitch, its screw thread with the threaded part 424 of screw rod 416 mates.Slide block 418 is installed in the housing 402, boring 431 and screw rod 416 coaxial lines.In the breech lock 400 that assembles, the threaded part of screw rod 416 424 is extended and is entered at least in part in the boring 431 of slide block 418, the screw thread of screw rod 416 always with the threads engage of boring 431.Thereby, screw rod 416 rotation cause slide block 418 with the direction linear displacement of the center longitudinal axis line parallel of screw rod 416.The spiral thread of coarse pitch is preferred, only makes the part with some rotations of screw rod 416 or rotation just can obtain the linear displacement of the requirement of slide block 418.
Because the arm 472 of torsionspring 462 engages with the wall 466 of housing 402, the arm 468 of torsionspring 462 applies on ratchet 404 towards opening or the power of unlatching location bias ratchet 404.
The form of trigger 406 is for pivotally being supported on the L shaped member in the housing 402.As limiting by trigger pivot pin 470, the pivotal axis of trigger 406 is parallel to the pivotal axis or the rotation of ratchet 404.In addition, as limiting by trigger pivot pin 470, the pivotal axis or the rotation of the pivotal axis of trigger 406 and ratchet 404 separate.Trigger 406 can pivotally move between bonding station and disengaging configuration, and is setovered towards the bonding station spring.Provide trigger spring 488 to be used for towards bonding station biasing trigger 406.Trigger spring 488 is torsionspring and part 474, the first arm 476 and second arm 478 with circumvolution.Trigger spring 488 is installed in the housing 402, and the part 474 of the circumvolution of torsionspring 488 is around trigger pivot pin 470.The groove 482 that the arm 476 of torsionspring 488 engages in the trigger 406.The wall 405 of second arm, 478 engage 402 of torsionspring 488.
Trigger 406 has with about right angle and connects together to form first lever arm 484 and second lever arm 486 of " L " shape.In the illustrated embodiment, second lever arm, 486 to the first lever arms 484 are long.Trigger pivot pin 470 is by the hole of the tie point between close second lever arm 486 and first lever arm 484 in the trigger 406.Second lever arm 486 is positioned in the middle of slide block 418 and the ratchet 404.First lever arm 484 has the far-end 490 of the far-end of the pivotal axis that is positioned at trigger 406 and/or second lever arm 486.Far-end 490 composition surfaces 454 of first lever arm 484 are to keep during at bonding station ratchet 404 at locked position at trigger 406.When slide block 418 moves to extended position from retracted position, slide block 418 engages second lever arms 486 and causes trigger 406 pivotally to move to the no longer disengaging configuration of engagement pawl 404 of trigger 406.When trigger 406 during at disengaging configuration, the far-end 490 of first lever arm 484 454 breaks away from from the surface, and ratchet 404 is free to rotate to the unlatching position under the spring biasing.Now can be from the rod part of pawl slot 458 withdrawal rams 508, and panel 500 can be moved to open position.When trigger 406 pivotally moved to disengaging configuration, the end of second lever arm 486 of the far-end of first lever arm 484 was towards ratchet 404 motions.
By excitation motor 410 drive bolt lock sets 400.Can use the switch (not shown) excitation motor 410 of long range positioning.When panel 500 was fixed on fastening position, slide block 418 was usually at retracted position.When excitation motor 410, screw rod 416 is rotated counterclockwise, and causes slide block 418 linear displacements to extended position.When slide block 418 moves to extended position, slide block impacts second lever arm 486 of trigger 406, and causes trigger 406 to move to disengaging configuration, discharges ratchet 404 thus to pivot.The biasing that ratchet torsionspring 462 provides is rotated from its locked position shown in Figure 56 ratchet 404 towards its unlatching position shown in Figure 60, at locked position, the rod part 434 of ram 508 is caught by pawl slot 458.The opening of the pawl slot 508 that rotatablely moves of ratchet 404 makes the opening of pawl slot 508 aim at the groove 412 of housing 402 basically, thereby allows ram 508 to break away from from ratchet 404.Can open panel 500 by panel 500 is moved to open position subsequently.
Can use various well-known securing members that latch assembly 400 is installed on panel or the installation surface, such as the frame of the opening that centers on chamber 509.For example, can latch assembly 400 be installed to stayed surface with finishing by the screw rod in the threaded hole in hole in the bottom of housing 402 and the joint stayed surface.In Figure 49-50, breech lock 400 is attached to around the chamber frame of 509 opening.In this configuration, ram 508 is installed to panel 500, makes when panel 500 is closed above the opening of chamber 509, and the rod part 434 of ram 508 is passed through groove 412 with engagement pawl groove 458.
Before panel 500 can be fixed on fastening position once more, slide block 418 must return its retracted position, make when the impact of the rod part 434 by ram 508 is driven into locked position with ratchet, trigger 406 can be freely engagement pawl 404 and ratchet 404 remained on locked position again.In order finishing slide block 418 to be reset to retracted position, the electronic control circuit (not shown) must to be provided, the switch of its response long range positioning is pressed and controls the electric current that supplies to motor 410.For the control circuit programming continues first predetermined lasting time with the electric current supply with first polarity to motor 410, and will continue second predetermined lasting time to motor 410 with the electric current supply of first opposite polarity second polarity subsequently.First polarity can be chosen as rotary screw 416 in the counterclockwise direction, thus slide block 418 is moved to extended position from retracted position, and second polarity can be chosen as rotary screw 416 in the clockwise direction, so that slide block 418 is moved to retracted position from extended position, thus and replacement slide block 418.When panel 500 was closed, the opening substantial registration groove 412 of the pawl slot 458 and side by housing 402 is without hindrance basically made pawl slot 458 can receive the rod part 434 of rams 508 by groove 412.When panel 500 was firmly closed, the rod part 434 of ram 508 was received in the groove 458 and impulse click 404, causes ratchet 404 to rotate towards locked position shown in Figure 56,61 and 100.When breech lock 404 rotates to locked position, the far-end 490 of first lever arm 484 of trigger 406 will move to bonding station and again the surface 454 of engagement recesses 456 ratchet 404 being remained on locked position shown in Figure 56,61 and 100, thereby panel 500 is fixed on fastening position.Recess 456 prevents trigger 406 excessive rotations and surpasses surface 454.
If strong load tends to impel panel 500 to open, high torque will be applied to ratchet 404.This causes again between the far-end 490 of the power of big surface 454 normal directions and first lever arm 484 that frictional force is applied to surface 454 and trigger 406 successively.Yet because the mechanical dominance that second lever arm 486 by trigger 406 provides, the energy consumption of the size of motor 410 and motor 410 can remain in the rational limit, keeps under the situation of heavy load and can operate applying as breech lock 400.
As the replacement scheme of the polarity of the electric current that oppositely supplies to motor 410, breech lock 400 can provide the mechanical device of the slide block 418 that is used to reset.The reset mechanical device of slide block of such being used to can be seen in the illustrated embodiment, and comprise pusher (kicker) lever 492 that pivotally is connected to slide block 418.Pusher lever 492 provides pivot 494, and it is by the hole in the pusher lever 492, and this hole is near the end (being also referred to as the near-end of pusher lever here) of the pusher lever 492 of the most close slide block 418.Pivot 494 is supported in the bearing 496 of a part that is provided as slide block 418 with being rotated.Around and the material that limits bearing 496 be resilient and by radial gap 499 crosscuts, make pivot 494 can snap in the bearing 496.Greatly about trigger 406 when ratchet 404 breaks away from, that is, a period of time that began soon and finished soon at that after before trigger breaks away from, slide block 418 is in or near its extended position, and ratchet 404 is in or close its locked position.Equally, at this moment between during some positions, be provided at cam face 498 on the ratchet 404 from the contact of the end (being also referred to as the far-end of pusher here) of slide block 418 pusher lever 492 farthest.When ratchet 404 during towards the rotation of its unlatching position, ratchet 404 promote pusher levers 492 and thus driving sliding block 418 get back to its retracted position.When ratchet 404 during, increase along the distance of measuring along the line of the longitudinal axis orientation of screw rod 416 between the position of pusher lever 492 contact cam faces 498 and the rotation of ratchet 404 towards the rotation of its unlatching position.Because the rotation of ratchet 404 is fixed on the position with respect to housing 402, pusher lever 492 and slide block 418 move backward towards the retracted position of slide block 418.Thereby, realize that driving sliding block 418 gets back to its retracted position when ratchet 404 during towards the rotation of its unlatching position.
The mechanical device of slide block 418 of being used to reset has been simplified the design of the electronic circuit of control breech lock 400 greatly.Use so mechanical reset apparatus, electronic control circuit only needs the electric current supply of first polarity is continued first predetermined lasting time to motor 410, to realize the breech lock unlatching.Again, select first polarity with rotary screw 416 in the counterclockwise direction thus slide block 418 is moved to extended position from retracted position.
In the illustrated embodiment, trigger 406 is made of two L shaped half ones 510 and 512, two L shaped half ones 510 and 512 stacks and contact with each other to form trigger 406.In the arm 514 of first L shaped half one 510 of the part of second lever arm 486 of formation trigger 406 and the arm 516 of second L shaped half one 512 each all has bandy part, the outwardly-bent central plane that leaves the trigger 406 that limits by the interface between two L shaped half ones 510 and 512 of this part.Opening 518 in second lever arm 486 of bandy part formation trigger 406, pusher lever 492 is by opening 518 location.Opening 518 allows pusher lever 492 by second lever arm 486 of trigger 406 and the cam face 498 of contact ratchet 404.The arm 516 that the arm 514 of described first L shaped half one 510 has groove 520, the second L shaped half ones 512 has groove 522.Described groove 520 and 522 defines the groove 482 of second lever arm 486 of device spring 488 joints that are triggered.In addition, each bandy part of arm 514,516 has ridge 524,526 respectively.When first L shaped half one 50 and the assembling of second L shaped half one 512 when forming trigger 406, ridge 524 and 526 contacts with each other.The scope of the position, angle that the part of the trigger spring 488 by groove 520,522 and ridge 524,526 restriction pusher levers 492 can present with respect to slide block 418.Therefore, the part of the trigger spring 488 by groove 520,522 and ridge 524,526 guiding pusher levers 492 are always suitably located with respect to slide block 418 and ratchet 404 to guarantee pusher lever 492, when rotating to its unlatching position, provide replacement slide block 418 to get back to its retracted position when ratchet 404.
The end of second lever arm 486 of first lever arm, 484 far-ends provides the groove 528 that engages coupling bar 530.Connecting rod 530 leads to housing 402 outsides and extends away from motor 410 and slide block 418 in the direction of the longitudinal axis that is parallel to screw rod 416.Be pulled outwardly coupling bar 530 from housing 402 trigger 406 is moved to disengaging configuration, discharging ratchet 404 from locked position thus, and realize breech lock 400 unlatchings.Coupling bar 530 can be connected to the pulley of long range positioning by cable.Can be set to rotation by cylinder lock control pulley.This provides the positive mechanical replacement device, and it allows operation breech lock 400 under the situation of motor or power failure.
Figure 106-108 shows another embodiment 300 of breech lock of the present invention, and it is designed to utilize ready-made Linear actuator 308.In breech lock 300, rotary pawl of the present invention mechanism uses with the Linear actuator 308 of the type that substitutes.The main distinction between breech lock 300 and the breech lock 400 is that the major part of Linear actuator 308 is in breech lock housing 302 outsides.Like this, can use different ready-made Linear actuators under the situation of breech lock 300 not needing to revise.The design that the manufacturer that the modularized design of breech lock 300 also adapts to ready-made Linear actuator carried out their design along with the past of time changes, and does not need to revise breech lock 300.Housing 302 is two and half ones 301 and 303 that join with the clam shell form.The part of bearing surface that is used for the pivot of trigger and ratchet is manufactured in the first half housings 301, and the rest parts of bearing surface that is used for the pivot of trigger and ratchet is manufactured in the second half housings 303.Linear actuator 308 has the plunger opening in its housing, the plunger 318 that promotes trigger 306 stretches out by this plunger opening.Flanged axle collar 305 is around the plunger opening.The first and second half housings 301 and 303 are joined round the axle collar 305 around the plunger opening of Linear actuator 308.The first half housings 301 have groove 309, and groove 309 is aimed at the axle collar 305 in flange 313 back of the axle collar 305.Place C clamps 315 by groove 309, C clamp 315 on the flange 313 aft section ground of the axle collar 305 around the axle collar 305.This prevents that Linear actuator 308 from being pulled out from housing 302.
The plunger 318 of Linear actuator 308 is used in slide block 418 motion trigger 406 identical modes trigger 306 being moved to disengaging configuration.In the structure of locking shown in Figure 106, ratchet 304 constructs and catches the rod part 434 of ram 508 at locking.Trigger 306 remains on locked position at bonding station and with ratchet 304.Excitation linear driver 308 moves to extended position shown in Figure 77 with plunger 318, and it causes trigger 306 to be moved to disengaging configuration, equally shown in Figure 107.In case trigger 306 is moved to disengaging configuration, ratchet 304 is released and rotates to the position of unlatching shown in Figure 107 under the spring biasing.Ram 508 is released and can opens subsequently any thing of cutting out of fixing by breech lock 300 now.
With reference to Figure 109 to 139, can see another embodiment 400a of breech lock constructed in accordance.Except the difference that indicates below, breech lock 400a is similar basically to breech lock 400.For briefly, the feature that those that do not describe breech lock 400a once more and breech lock 400 are identical will be because such description will only be duplicating the material that proposed for breech lock 400.
The same with breech lock 400, breech lock 400a has motor 410, bow tie coupling 414, screw rod 416 and slide block 418a.Slide block 418a is different on following this aspect with slide block 418, and slide block 418a is not inclined to pusher lever 492 and uses, and does not therefore provide bearing 496 usually.In breech lock 400a, pusher lever 492 is compressed spring 493 and replaces.Compression spring 493 is provided between slide block 418a and the trigger 406a.Slide block 418a also provides conduct for the spring retainer of spring 493 and the cross ridge 497 of guiding device.The end of each arm of cross ridge 497 be the overhanging surface 548 of catching, it suitably is positioned in the middle of slide block 418a and the trigger 406a so that guarantee spring 493 at the end place joint winding near the spring 493 that contact with slide block 418a.Trigger 406a is monomer structure and the opening 518 that is not used in pusher lever 492, and it is no longer necessary.The strength deficiency of spring 493 is to overcome trigger spring 488 and to drive trigger 406a, even when the slide block 418a that relies on its complete extended position at utmost compresses spring 493.Therefore, trigger 406a will not be driven, and impact the long arm 486a of trigger 406a up to the ridge 495 of slide block 418a.Yet in case no longer encourage motor, spring 493 driving sliding block 418a get back to its retracted position.Alternatively, compression spring 493 can be provided at slide block 418a and housing 402a a part, insert 415a a part or be fixed between some other structures with respect to the position of housing 402a.Also can use torsionspring to substitute compression spring 493.
In breech lock 400a, compare with the microswitch 532 in the breech lock 400, reorientate microswitch 532a, make the position of microswitch 532a response ratchet 404a rather than response ram 508a be driven.Breech lock 400a has the microswitch driver 540 that is installed on the pivotal axis identical with ratchet 404a.Microswitch driver 540 provides the side 544 of engagement pawl 404a and the fin 542 of 498a, makes microswitch driver 540 and ratchet 404a pivot together around same rotation as a unit.Microswitch driver 540 also provides the ridge 546 that is used to engage microswitch lever 536a.Breech lock 400a also provides the microswitch retainer 534a of redesign, and it reorientates microswitch 532a, makes that microswitch lever 536a can be depressed by ridge 546 as ratchet 404a during at locked position.In addition, housing insert 415a and housing 402a redesign a little differently to determine the route of breech lock distribution, to alleviate some strains on motor and the microswitch distribution thus.The ratchet 404a that uses with breech lock 400a shows the pawl slot 458a with more not serious concave side.
In unlatching operating period, excitation motor 410 causes 414 rotations of bow tie coupling.The bow tie coupling is rotary screw 416 again, and is as above described about breech lock 400.When screw rod 416 rotation, to go up and the screw thread of three times of pitch of slide block 418a inside by the axle of screw rod 416, it causes slide block 418a to move towards trigger 406a in the mode of straight line.Slide block 418a is towards the arm 486a of trigger 406a motion and pusher arm 486a, and it causes trigger 406a rotation, breaks away from from the recess 456 of rotary pawl 404a up to the arm 484a of trigger.Trigger 406a allows ratchet to rotate to the unlatching position under the biasing of ratchet spring 462 from the disengaging of ratchet 404a, to discharge ram 508a thus.Slide block 418a and screw rod 416 turn back to their starting position by compression spring 493.Also can come mechanically unlatching breech lock 400a by drawing coupling bar 530a.Coupling bar 530a only the L shaped end of coupling bar with respect to the ring of the other end towards different with coupling bar 530.In coupling bar 530, extend in identical plane, the plane that the mid portion of L shaped end by coupling bar and elongation limits at the ring of coupling bar one end, and in coupling bar 530a, extend in the plane on the plane that the mid portion perpendicular to L shaped end by coupling bar and elongation limits at the ring of coupling bar one end.
When ram 508a rotates to locked position with ratchet 404a, microswitch driver 540 rotates to its locked position with ratchet 404a, in this position, microswitch driver 540 is depressed microswitch lever 536a, and its signaling ratchet 404a is at locked position.
The pure mechanical version of breech lock 400 and 400a also is envisioned for a part of the present invention.Motor 410, bow tie coupling 414, screw rod 416, slide block 418a and spring 493 are removed from the pure mechanical version of breech lock.Pure mechanical version has the housing of shortening, and it holds trigger and ratchet and their relevant springs, and supports coupling bar 530a.As under the situation of housing 402,402a, the housing of shortening has the opening that permission engages between ram 508a and ratchet 404a.In the version of pure machinery, mainly be by drawing coupling bar 530a that trigger is rotated to disengaging configuration.Any one that should also be noted that in the microswitch structure of disclosure any can be in breech lock 400 and 400a used.In addition, microswitch also can add the pure mechanical version of breech lock, with the situation of remote monitoring breech lock.
Those skilled in the art are appreciated that, can under the situation that does not depart from scope and spirit of the present invention, make various modifications, and the present invention's attempt is included in the modification and the variant of the breech lock in accompanying Claim book and their the equivalent scope to breech lock of the present invention.
Claims (5)
1. latch assembly, it is used for releasedly first member being fixed on the fastening position with respect to second member, and one in described first member and described second member has and the fixing retainer of its position relation, and this latch assembly comprises:
Housing;
Pivotally support and can be by the ratchet that moves between locked position and unlatching position around pawl pivot axis pivoting action by described housing, described ratchet provides the torsionspring towards the described ratchet of unlatching location bias; And
By the trigger that described housing pivotally supports, described trigger can move between bonding station and disengaging configuration,
Described latch assembly is characterised in that, described trigger have be suitable for when described ratchet at described locked position and described trigger during at described bonding station, engage described ratchet and described ratchet is maintained first lever arm of described locked position, described trigger has second lever arm and can be engaged by described drive unit, and described latch assembly also comprises:
Screw rod;
Slide block, engage with described screw rod and to make the rotation of described screw rod cause described slide block between withdrawal and extended position, to move, when described slide block described slide block when retracted position moves to described extended position moves to described disengaged position with described trigger from described bonding station; With
Motor has the output shaft that is connected with described screw rod, makes described screw rod rotate according to the rotation of the output shaft of described motor;
Described second lever arm can engage with described slide block, described slide block selectively engages described second lever arm so that described trigger movement is arrived described disengaging configuration, allow described ratchet to move to described unlatching position thus, when described trigger when described bonding station moves to described disengaging configuration, described second lever arm pivots towards described ratchet, and described trigger can be around being parallel to described pawl pivot axis and pivotally moving from the trigger pivotal axis that described pawl pivot axis separates.
2. latch assembly according to claim 1, wherein, each has longitudinal axis described screw rod, described slide block and described motor, and wherein, the described longitudinal axis of described screw rod, described slide block and described motor all each other point-blank.
3. latch assembly according to claim 2, wherein, described screw rod has a pair of finger-like ridge that protrudes from the one end, and latch assembly also comprises:
The described output shaft that is attached to described motor is so that Xuan Zhuan bow tie coupling therewith, described bow tie coupling has the wing, the wing is positioned at around the angle position of the described longitudinal axis of described motor, it is in the middle of described finger-like ridge, thus the described output shaft of described motor is connected to described screw rod rotatably.
4. according to each described latch assembly among the claim 1-3, also comprise the compression spring that is arranged between described slide block and the described trigger, described slide block turns back to its enable position by described compression spring.
5. according to each described latch assembly among the claim 1-3, also comprise the pusher lever, its pivot is connected on the described slide block, and when described ratchet during towards the rotation of its unlatching position, the described slide block of described pusher lever actuated turns back to its retracted position.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US48704203P | 2003-07-10 | 2003-07-10 | |
| US60/487,042 | 2003-07-10 | ||
| US60/562,808 | 2004-04-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1849435A CN1849435A (en) | 2006-10-18 |
| CN100432364C true CN100432364C (en) | 2008-11-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800260361A Active CN100432364C (en) | 2003-07-10 | 2004-07-09 | Rotary pawl latch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100432364C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TR202021105A1 (en) * | 2020-12-21 | 2022-07-21 | Mesan Kilit Anonim Sirketi | Electronic lock with hook with an improved trigger assembly. |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3386761A (en) * | 1965-11-22 | 1968-06-04 | Gen Motors Corp | Vehicle body door latch and locking system |
| US4135377A (en) * | 1975-12-01 | 1979-01-23 | Arn. Kiekert Sohne | Central locking equipment for vehicle doors |
| US6139073A (en) * | 1998-08-31 | 2000-10-31 | Westinghouse Air Brake Company | Lock assembly |
| CN1058068C (en) * | 1994-11-10 | 2000-11-01 | 三井金属矿业株式会社 | Vehicle door lock device |
| CN1422357A (en) * | 2000-02-14 | 2003-06-04 | 索斯科公司 | Heavy-duty slam-to-close rotary ratchet pull latch |
-
2004
- 2004-07-09 CN CNB2004800260361A patent/CN100432364C/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3386761A (en) * | 1965-11-22 | 1968-06-04 | Gen Motors Corp | Vehicle body door latch and locking system |
| US4135377A (en) * | 1975-12-01 | 1979-01-23 | Arn. Kiekert Sohne | Central locking equipment for vehicle doors |
| CN1058068C (en) * | 1994-11-10 | 2000-11-01 | 三井金属矿业株式会社 | Vehicle door lock device |
| US6139073A (en) * | 1998-08-31 | 2000-10-31 | Westinghouse Air Brake Company | Lock assembly |
| CN1422357A (en) * | 2000-02-14 | 2003-06-04 | 索斯科公司 | Heavy-duty slam-to-close rotary ratchet pull latch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1849435A (en) | 2006-10-18 |
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