CN105386653A - Electromagnetic door lock, door lock assembly and electric appliance - Google Patents

Abstract

A door lock (100) comprises a door lock box (101). The door lock box (101) comprises a locking device (230), a magnet (235) arranged on the locking device (230) and a release hole (265) formed in the door lock box (101). The locking device (230) has a locking position and a releasing position, the door lock (100) is closed when the locking device (230) is at the locking position, and the door lock (100) is released when the locking device (230) is at the releasing position. The release hole (265) is used for allowing an unlocking magnet (254) to be inserted, and when the unlocking magnet (254) is inserted into the release hole (265), the magnet (235) on the locking device (230) is pushed, and the locking device (230) is moved to the releasing position. The door lock can be opened when an electric appliance is powered off.

Description

Electromagnetic door lock, door lock assembly and electrical equipment

Technical field

The present invention relates to a kind of door lock for commercial or home electric equipment, particularly a kind of electromagnetic door lock with energency-unlocking function.

Background technology

The door lock mechanism of normal use to equipment of electric equipment has certain requirement.Complete hermetically closing is needed until task could normally be opened after completing at the door of commercial or home electric equipment as washing machine, dish-washing machine etc.But after the such as power-off of some emergencies, the electromagnetic start mechanism of door lock runs out of steam, and gate stop can not discharge by door lock, and the goalkeeper of electrical equipment cannot open.Emergency release device is in such cases artificially by door-lock opening.

The urgent delivery system of prior art such as PTC or the urgent delivery system of rope also can open door lock in an emergency situation.The urgent delivery system of PTC is strained and is discharged unlocking feature realized fail safe by potsherd heating power, power-off cooling, complex structure, the parts of this system are huge, cost is high, and be energized when machine runs, thus go back wastes power resource; always The urgent delivery system of rope is that peripheral hardware stay cord is to pull open the stop pin of door lock in door lock, and this system needs on electric equipment, offer window and separately arrange stay cord, uses inconvenience.

Summary of the invention

In order to overcome weak point of the prior art, the invention provides a kind of structure simple and there is the electromagnetic door lock of energency-unlocking function, being specially:

A kind of electromagnetic door lock, comprise door lock box, door lock box comprises:

Locking device, locking device has latched position and off-position; Locking device, when latched position, pins door lock; Locking device, when off-position, discharges door lock;

Magnet is on the locking apparatus set;

Be arranged on the release aperture on door lock box, for inserting magnet of unblanking, when described magnet of unblanking inserts release aperture, promote the magnet on locking device, locking device is moved to off-position.

And a kind of door lock assembly, use aforesaid electromagnetic door lock, and key of unblanking.

And a kind of electrical equipment, use aforesaid electromagnetic door lock, and key of unblanking.

Electromagnetic door lock of the present invention adopts structure simply to unblank key as emergency release device, utilizes the magnetic force of magnet of unblanking to push stop pin (locking device) open to discharge locking sliding block and reaches the object of unblanking.

Emergency release device of the present invention only needs on appliance panel, separately open a duck eye and gets final product (even directly on panel, marking onlocking zone without the need to punching), and therefore without the need to too much transforming electrical equipment, applicability is strong.

Emergency release device of the present invention can be applied to the multiple stop pin (locking device) that utilizes and lock on the similar door lock of door lock, and its structure is simple, low to the improvement cost of the device using door lock.

Accompanying drawing explanation

Fig. 1 is the front perspective view of door lock 100 of the present invention;

Fig. 2 A is the internal construction schematic diagram after Fig. 1 opens door lock 100 lock box cover 125;

Fig. 2 B is the structural representation that stop pin 230 is not pushed locking locking sliding block 240 by the electromagnetic assembly 120 in Fig. 2 A;

Fig. 2 C is the structural representation that stop pin 230 is pushed locking locking sliding block 240 by the electromagnetic assembly 120 in Fig. 2 A;

Fig. 2 D is the reverse side perspective view of door lock 100 of the present invention;

Fig. 2 E is the perspective view be arranged on appliance panel of door lock 100 of the present invention;

Fig. 3 is all parts structural blast figure of Fig. 2 A;

Fig. 4 A is the Facad structure schematic diagram of cam 108;

Fig. 4 B is the side structure schematic diagram of cam 108;

Fig. 5 A is the Facad structure schematic diagram of mounting bracket 106;

Fig. 5 B is the inverse layer structure schematic diagram of mounting bracket 106;

Fig. 6 A is that mounting bracket 106 is by the structural representation of upspringing;

Fig. 6 B is that mounting bracket 106 is by the structural representation compressed;

Fig. 7 A is the structural representation that gate stop 270 is about to insert door lock hole 204;

Fig. 7 B is the structural representation that after gate stop 270 hangs up door lock hook 420, actuating cam 108 rotates;

Fig. 7 C is the structural representation that after gate stop 270 hangs up door lock hook 420, cam 108 moves up;

Fig. 7 D is the structural representation that gate stop 270 hangs up door lock hook 420 post-tensioning moving cam 108 and moves down;

Fig. 7 E is the structural representation that gate stop 270 is about to depart from door lock hook 420;

Fig. 7 F is the structural representation of key 250 when stop pin 230 being shifted onto off-position of unblanking in an emergency situation.

Detailed description of the invention

Below with reference to the accompanying drawing forming this manual part, various detailed description of the invention of the present invention is described.It should be understood that, although use the term representing direction in the present invention, such as "front", "rear", " on ", D score, "left", "right", " vertically " or " parallel " etc. describe various example features of the present invention and element, but use these terms just object for convenience of description at this, determine based on the example orientations shown in accompanying drawing.Because disclosed embodiment of this invention can be arranged according to different directions, so these represent that the term in direction just should not regard as restriction as explanation.In figures in the following, same component use same drawing number, and similar component use similar drawing number, to avoid repeated description.

For convenience of identification, each mark in figure is respectively:

Door lock 100

Door lock box 101

Cam 108

Bottom 109

Cam post 110

(cam post 110) two top 112,114

Electromagnetic assembly 120

Lock box cover 125

Door lock hole 204

Pen core lock 210

Pen core lock framework 212

Iron core 214

Pen core lock spring 216

Electromagnetic coil 220

Shell fragment 218

Stop pin (locking device) 230

Locking sliding block 240

To unblank key 250

The tooth wing 251

(in release aperture 265) groove 252

Guide pillar 255

Sideslip groove 256

Cell wall 258

Slide block lockhole 260

Release aperture 265

Gate stop 270

Mounting groove (301,302)

Camshaft (312,314)

Step 321

Upper contact surface 322

Lower contact surface 324

Cam bottom 330

(cam 108) surface of revolution 332

(locking sliding block 240) surface of revolution 334

Support spring (340,342)

Sliding block spring (360,362)

Support column (380,382)

Spring stack (384,386)

Hole (388,389)

Door lock hook 420

Chute (503,504)

Groove (508,509)

Fig. 1 is the front perspective view of door lock 100 of the present invention, electromagnetic door lock 100 as shown in Figure 1 comprises door lock box 101, door lock box 101 has bottom 109, electromagnetic assembly 120 (see Fig. 2 A) is accommodated in the left side of door lock box 101 inside, it there is lock box cover 125 cover, electromagnetic assembly 120 is for opening and closing door lock 100 (specifically seeing Fig. 2 B and Fig. 2 C), door lock hole 204 (specifically seeing Fig. 2 D) is provided with on the right side of door lock box 101 inside, the position in the corresponding door lock hole 204, top of door lock box 101 is as shown in the figure provided with mounting bracket 106, mounting bracket 106 inside is provided with cam 108, cam post 110 is provided with above cam 108.Mounting bracket 106 can do up and down (or reciprocal) motion relative to the bottom 109 of door lock box 101, drive inboard cam 108 to do up and down (or reciprocal) motion simultaneously, mounting bracket 106 has two relative tops (112 along its length, 114), two tops (112,114) are provided with relative mounting groove (301,302) (specifically seeing Fig. 3, Fig. 5 A and Fig. 5 B).

Fig. 2 A is the internal construction schematic diagram after Fig. 1 opens door lock lid 125; As shown in Figure 2 A, after lock box cover 125 is opened, can see that electromagnetic assembly 120 comprises electromagnetic coil 220, pen core lock 210, pen core lock framework 212 (interior band cored 214, pen core lock spring 216), shell fragment 218, is provided with the stop pin 230 etc. of (or being embedded with) magnet 235 towards one end of bottom 109.By making electromagnetic coil 220 produce magnetic force to electromagnetic coil 220 energising.When passing to the electric current of different directions to electromagnetic coil 220, the iron core 214 in attraction pen core lock 210 does back and forth in pen core lock 210 (or back and forth) motion (in the direction of arrow A with the direction being in reverse to arrow A).Iron core 214 (or back and forth) back and forth Sports band in pen core lock 210 core lock framework 212 of starting writing does back and forth (or back and forth) and moves on the direction identical with the direction of motion of iron core 214, thus shell fragment 218 moves up and down (in the direction of arrow C with direction that is reverse and arrow C), and then drive stop pin 230 to move up and down (in the direction of arrow C with direction that is reverse and arrow C), thus lock or loosen locking sliding block 240 (see Fig. 2 B and Fig. 2 C).

Fig. 2 B is that (namely stop pin (locking device) 230 does not push by the electromagnetic assembly 120 in Fig. 2 A, stop pin 230 is in off-position) structural representation (door lock box 101, the holder part such as lock box cover 125 are hidden) that locking sliding block 240 is locked; Electromagnetic assembly 120 also comprise pen core lock framework 212 on guide pillar 255 and L-type chute 256, illustrate electromagnetic door lock 100 of the present invention and be in initially/off-position (Men Weiguan).As shown in Figure 2 B, slide block 240 is positioned at free position, guide pillar 255 on pen core lock framework 212 is limited by the cell wall 258 of chute 256, even if therefore press the shift knob of door lock, electromagnetic coil 220 is energized and produces magnetic force, pen core lock framework 212 can not be mobile along arrow A direction (i.e. its axis direction).

Fig. 2 C is that (namely stop pin (locking device) 230 pushes by the electromagnetic assembly 120 in Fig. 2 A, stop pin 230 is in latched position) structural representation (door lock box 101, the holder part such as lock box cover 125 are hidden) that locking sliding block 240 is locked; Illustrate electromagnetic door lock 100 of the present invention and be in door lock fastening position.As shown in Figure 2 C, when door is shut, locking sliding block 240 is pulled to fastening position, and the slide block lockhole 260 on locking sliding block 240 aligns with stop pin 230; Guide pillar 255 simultaneously on pen core lock framework 212 aligns with the top vertical slot of chute 256.Now, as long as electromagnetic coil 220 is energized produce magnetic force, pen core lock framework 212 just can be dragged mobile along arrow A direction (i.e. its axis direction).After pen core lock framework 212 is removed, because the restriction of pen core lock framework 212 and locking sliding block 240 pairs of stop pins 230 is cancelled all, therefore stop pin 230 moves down (as shown by arrow C) and inserts the slide block lockhole 260 (latched position) of locking sliding block 240 under the elastic force effect of shell fragment 218.When guide pillar 255 aligns with the top vertical slot of chute 256, pen core lock framework 212 can reciprocate along arrow A direction and the direction being in reverse to arrow A, locking sliding block 240 can reciprocate along arrow B direction and the direction being in reverse to arrow B, stop pin 230 reciprocates along arrow C direction and the direction being in reverse to arrow C, and any two directions in the direction of arrow A, B, C indication are mutually orthogonal or different mutually.In fact, electromagnetic assembly 120 part shown in Fig. 2 B-Fig. 2 C describes more specifically sees that application number is the Chinese patent prospectus of 201210072421.6, and this patent application is all referred in the application, is wherein a kind of specific embodiment of the present invention.

Fig. 2 D is the reverse side perspective view of door lock 100 of the present invention; As shown in Figure 2 D, the back side of the bottom 109 of door lock 100 has door lock hole 204.When the door closes, the gate stop 270 on the door of electric equipment is aimed in door lock hole 204, thus gate stop 270 inserts in door lock hole 204, matches with the door lock hook 420 (see Fig. 4 A-Fig. 4 B) on the cam 108 in door lock 100.The back side of the bottom 109 of side, door lock hole 204 is also provided with urgent release aperture 265, and key 250 of unblanking can insert in urgent release aperture 265 from the outside.The insertion end of key of unblanking is provided with magnet 254 of unblanking, magnet 254 of unblanking is identical with the polarity on the relative side of the magnet 235 on stop pin 230, thus in case of emergency (as unexpected power-off etc.), urgent release aperture 265 can be inserted by key 250 of unblanking and shift alignment pin 230 onto off-position from latched position thus open door lock.The sidewall of the close insertion end of key 250 of unblanking has the tooth wing 251, and release aperture 265 inwall has groove 252, and the quantity of groove 252, shape and the tooth wing 251 match.Groove 252 and the shape of the tooth wing 251 and the suitability of quantity ensure to unblank the uniqueness of key 250, thus the safety (such as, the danger that children unblank to bring can not occur) that guarantee is unblanked.Release aperture 265 is not through hole.Although describe release aperture 265 herein and key 250 of unblanking has specific structure with the uniqueness of the key 250 that ensures to unblank, but, should be understood that, when not considering to unblank the uniqueness of key 250, can not require to unblank key 250 and release aperture 265 has specific structure, as long as and guarantee key 250 of unblanking to insert in release aperture 265.

Fig. 2 E is the perspective view be arranged on appliance panel of door lock 100 of the present invention; As shown in Figure 2 E, door lock 100 is arranged on the inboard of appliance panel 280 (locally), as optimum embodiment, appliance panel 280 is provided with opening in corresponding door lock hole 204 and release aperture 265 place, stretch out for door lock hole 204, and the key 250 that makes to unblank can insert in release aperture 265 to shift stop pin 230 onto off-position from latched position.Although, on door lock base 109, be provided with release aperture 265 shown in figure to insert key of unblanking.But in fact, the present invention can not be provided with release aperture 265 on door lock base 109, on panel 280, corresponding release aperture 265 place also can not be provided with opening, but on respective regions does zone marker, also can reach with the key 250 of unblanking with strong magnetic force magnet effect stop pin 230 being shifted onto off-position from latched position near this region.

Fig. 3 is the door lock 100 all parts structural blast figure (in Fig. 2 A, electromagnetic assembly 120 part is hidden) of Fig. 2 A; As shown in Figure 3, electromagnetic door lock 100 comprises door lock box 101, mounting bracket 106, cam 108, cam post 110, lock slider 240, stop pin 230, support spring (340,342), key 250 etc. of unblanking; Door lock box 101 has bottom 109, bottom door lock box 101, top is provided with mounting bracket 106 on the right side of 109, mounting bracket 106 along its length (B-B axis) is provided with two relative tops (112,114), two tops (112,114) are provided with relative mounting groove (301,302); Mounting bracket 106 to be arranged on bottom door lock box 101 on 109 actively, and it can be done up and down relative to the bottom 109 of door lock box 101 or move back and forth.

Bottom 109 is provided with two support columns (380,382) raised up, two tops (112 of mounting bracket 106,114) be respectively equipped with chute (503,504) (see Fig. 5 B) that extend towards bottom 109, support column (380,382) inserts in chute (503,504) respectively to limit the rectilinear movement of mounting bracket 106.Bottom 109 is respectively equipped with in two support columns (380,382) outside the spring stack (384,386) projected upwards, mounting bracket 106 liang of tops (112,114) are respectively equipped with towards the groove (508,509) of bottom 109 extension to adapt to spring stack (384,386); Two support springs (340,342) are set on spring stack (384,386), are clipped between bottom 109 and mounting bracket 106.

Camshaft (312,314) extend from the both sides of cam 108, camshaft (312,314) be arranged in the mounting groove (301,302) on the top on mounting bracket 106 respectively, make cam 108 by camshaft (312,314) rotate around the axis B-B of the length direction of mounting bracket 106, the middle part of cam 108 is provided with door lock hook 420 (see Fig. 4 A-Fig. 4 B), for engaging gate stop 270 (see Fig. 7 A-Fig. 7 F), the top of cam 108 is provided with step 321, and step 321 has upper contact surface 322 and lower contact surface 324.

Support column (380,382) termination is respectively equipped with hole (388,389), and the two ends of cam post 110 are inserted in hole (388,389), withstand on (during initial position) on the upper contact surface 322 of cam 108.And the upper contact surface 322 of cam 108 is curved end, when cam 108 does not move, cam post 110 blocks curved end, makes cam (108) remain on initial position.It is in order to when cam 108 rotates that upper contact surface 322 is set to curved end, and cam 108 can slip over from cam post 110 soffit smoothly.When rotating around the axis (B-B) of the length direction of mounting bracket 106 along with cam 108, cam post 110 contacts (initial position) with the upper contact surface 322 of step 321 or lower contact surface 324 contacts (final position).

Locking sliding block 240 be arranged in parallel, along with cam 108 moves reciprocatingly with the bottom 109 of door lock box 101. when locking sliding block 240 move to fastening position pin motionless time, cam 108 is stuck and can not moves.Cam 108 is withstood on the right side of locking sliding block 240, side (namely near the side of the locking sliding block 240) edge of the bottom 330 of cam 108 is provided with surface of revolution 332, locking sliding block 240 is provided with a surface of revolution 334 near the edge on cam 108 side (i.e. right side), and the surface of revolution 334 of locking sliding block 240 matches with the surface of revolution 332 of cam 108 bottom 330; When inserting gate stop 270, cam 108 is promoted to be rotated counterclockwise by gate stop 270, then move up together in company with mounting bracket under the effect of support spring (340,342), the surface of revolution 332 of cam 108 bottom 330 is away from the surface of revolution 334 of locking sliding block 240, and locking sliding block 240 moves to cam 108 under sliding block spring (360,362) promotes; When extracting gate stop 270, cam 108 is pulled to move down by gate stop 270 and turns clockwise, and the surface of revolution 332 of cam 108 bottom 330 promotes locking sliding block 240 and gets back to initial position.

Locking sliding block 240 side is provided with slide block lockhole 260, when locking sliding block 240 moves to fastening position, locks locking sliding block 240 (latched position) to electromagnetic coil energising to drive stop pin 230 to insert slide block lockhole 260.Specifically, along with the closedown of machinery equipment door, gate stop 270 inserts in door lock hole 204, cause being rotated counterclockwise and moving upward of cam, thus locking sliding block 240 is moved to fastening position in the promotion of sliding block spring (360,362), after enabling gate lock-switch, electromagnetic assembly 120 drives stop pin 230 to move to latched position and locks locking sliding block 240.Sliding block spring (360,362) is all the time to the motive force that locking sliding block 240 applies to the right.

In downside, bottom 109, (Fig. 3 is not shown, sees Fig. 7 A-7F) is provided with release aperture 265.Release aperture 265 is not through hole, and bottom 109 is not run through.Release aperture 265 is just to stop pin 230.When stop pin 230 is in the latched position inserting slide block lockhole 260, release aperture 265 also aims at slide block lockhole 260.Stop pin 230 is provided with (or being embedded with) magnet 235 towards one end of bottom, the insertion end inserting the key 250 (as shown in Figure 7 F) of unblanking of release aperture 265 is provided with magnet 254 of unblanking, to unblank magnet 254 identical with the polarity of the relative end of magnet 235 (homopolarity is relative), thus the insertion end of key 250 of unblanking and the end towards bottom of stop pin 230 close to each other time, unblank to produce repulsive force between key 250 and stop pin 230.Therefore, when stop pin 230 is in the latched position inserting slide block lockhole 260, if will unblank, key 250 inserts release aperture 265, the repulsive force of unblanking between key 250 and stop pin 230 can promote stop pin 230 and leave slide block lockhole 260 (now such as emergency appliance cut-off, electromagnetic assembly 120 loses electric power), with loosening locking sliding block 240.

Fig. 4 A is the Facad structure schematic diagram of cam 108; As shown in Figure 4 A, camshaft (312 is extended from the both sides of cam 108,314), make cam 108 by camshaft (312,314) rotate around the axis B-B (see Fig. 3) of the length direction of mounting bracket 106, the middle part of cam 108 is provided with door lock hook 420, for engaging gate stop 270 (see Fig. 7 A-Fig. 7 F), the top of cam 108 is provided with step 321, and step 321 has upper contact surface 322 and lower contact surface 324.

Fig. 4 B is the side structure schematic diagram of cam 108; As shown in Figure 4 B, upper contact surface 322 is curved end, when cam 108 is at initial position, upper contact surface 322 withstands in cam post 110, because upper contact surface 322 is curved end, when cam 108 rotates, cam 108 can slip over from the downside of cam post 110 more smoothly.The edge, side, bottom 330 of cam 108 is provided with surface of revolution 332, and surface of revolution 332 mutually mates with the surface of revolution 334 of close locking sliding block 240.

Fig. 5 A is the Facad structure schematic diagram of mounting bracket 106; As shown in Figure 5A, mounting bracket 106 is the hollow out design at the bottom of slotless, and mounting bracket 106 is relatively provided with two tops (112,114) along its length, two tops (112,114) are provided with relative mounting groove (301,302).The camshaft (312 extended from the both sides of cam 108,314) be arranged in mounting groove (301,302) respectively, cam 108 is rotated by the axis B-B (see Fig. 3) of camshaft (312,314) around the length direction of mounting bracket 106.Mounting bracket 106 is also provided with chute (503,504), bottom 109 is provided with two support columns (380,382) raised up, and support column (380,382) inserts in chute (503,504) respectively to support mounting bracket 106 and to limit the rectilinear movement of mounting bracket 106.

Fig. 5 B is the inverse layer structure schematic diagram of mounting bracket 106; As shown in Figure 5 B, the hole 510 that mounting bracket 106 comprises two tops (112,114), inside arranges cam 108, chute (503,504), groove (508,509) etc.Chute (503,504) runs through up and down, groove (508,509) is with bottom land, and groove (508,509) is for holding two spring stacks (384,386) that bottom 109 is established and two support springs (340,342) be enclosed within spring stack (384,386).Support spring (340,342) is for providing thrust upwards to mounting bracket 106 and cam 108.

Fig. 6 A is that mounting bracket 106 is by the structural representation pushed open away from bottom 109.As shown in Figure 6, for cam 108 (not shown) is backed down by gate stop 270 (not shown), after the upper contact surface 322 of cam 108 slips over from the soffit of cam post 110, mounting bracket 106 is pushed open away from bottom 109 by support spring 340 and support spring 342, cam 108 moves up, until the lower contact surface of cam 108 is in conjunction with cam post 110 together along with mounting bracket 106.

Fig. 6 B is the structural representation that mounting bracket 106 is pressed towards bottom 109; As shown in Figure 6B, when gate stop 270 is pulled out, moving cam 108 can be with moves downward and turns clockwise again.Moving downward of cam 108 can drive mounting bracket 106 to move downward together, make mounting bracket 106 be pressed towards bottom 109, and support spring 340 and support spring 342 is compressed.Along with turning clockwise of cam 108, the soffit of upper contact surface 322 engagement cam post 110, thus cam post 100 pairs of cams 108 apply towards the pressure of bottom 109, make support spring 340 and support spring 342 keep compressive state, thus mounting bracket 106 presses to bottom 109.As can be seen from Figure 6B, chute 503 and chute 504 run through, and support column 380 and support column 382 can pass mounting bracket 106.

Fig. 7 A-7E is the door lock course of work in normal state, and Fig. 7 F is the door lock course of work in emergency situations.

Fig. 7 A is the structural representation that gate stop 270 is about to insert door lock hole 204; As shown in Figure 7 A, locking sliding block 240 and bottom 109 be arranged in parallel, and locking sliding block 240 can move reciprocatingly towards with away from cam 108.Locking sliding block 240 is provided with slide block lockhole 260.In figure, stop pin 230 is in off-position.And when slide block lockhole arrives below stop pin 230, stop pin 230 can be aimed at slide block lockhole 260 and insert in slide block lockhole 260 downwards, reaches latched position.In figure, locking sliding block 240 is in original position, withstands cam 108 on the right side of it, and the surface of revolution 334 had on the right side of the locking sliding block 240 of the radian of coupling engages with the surface of revolution 332 of the side, bottom 330 of cam 108; As shown in the figure, gate stop 270 moves along direction A and is about to insert in door lock hole 204, does not also engage with the door lock hook 420 of cam 108.The upper contact surface 322 of cam 108 is also bonded in cam post 110.The outside of bottom 109 is provided with release aperture 265, and release aperture 265 aims at stop pin 230.

Fig. 7 B is the structural representation that after gate stop 270 hangs up door lock hook 420, actuating cam 108 rotates; Gate stop 270 moves upward to along direction A and engages with door lock hook 420, and actuating cam 108 rotates along B direction (counterclockwise), and upper contact surface 322 and the cam post 110 of cam 108 depart from; The surface of revolution 332 of cam 108 bottom 330 leaves the surface of revolution 334 of locking sliding block 240, under the motive force effect that two sliding block spring (360,362) (not shown)s being arranged on the left side away from cam 108 of locking sliding block 240 provide, locking sliding block 240 is right side slip in figure along D direction, when slide block lockhole 260 moves to stop pin 230 correspondence position, electromagnetic assembly 120 promotes stop pin 230 and is about to move downward along E direction and be inserted in slide block lockhole 260, and namely stop pin 230 is in latched position.

Fig. 7 C is the structural representation that after gate stop 270 hangs up door lock hook 420, cam 108 moves up; As shown in the figure, gate stop 270 continues to move upward along direction A, and simultaneously support spring 340 and support spring 342 promote mounting bracket 106 and be with moving cam 108 together to move upward along C direction, and cam 108 moves upward along C direction arrival latched position.Being in final position when the lower contact surface 324 of the step 321 on cam 108 contacts with cam post 110, is also the limit " latched position ".The surface of revolution top of locking sliding block 240 is planes, and this planar range Here it is its compensatory zone, in this compensatory zone, gate stop 270 can be pinned by door lock hook 420 by gate stop 270.In fact, the electric door such as dish-washing machine needs complete hermetically closing normally could open operation, on door, generally also installs packing ring additional to strengthen sealing performance.But packing ring is generally made by rubber or plastics, the Different factor that the production technology of different manufacturers is different, elastic properties of materials performance is different, expanded by heating amplitude is different, degree of aging length etc. that is different and gate stop affects gate stop change all causes the difference of the sealing performance of packing ring, all can affect the sealing performance of door lock.But in this compensatory zone, cam 108 can move upward, and is strained by gate stop 270, the sealing problem that the inconsistency of shim thickness, gate stop length is brought.During arrival fastening position, stop pin 230 also moves downward along E direction and is inserted in slide block lockhole 260.Now locking sliding block 240 is locked can not move, and be also locked slide block 240 and cam post 110 of cam 108 is fixed on fastening position and can not moves.Gate stop 270 is engaged cannot extract out by door lock hook 420, and door lock 100 is lockable.

Fig. 7 D is the structural representation that gate stop 270 hangs up that door lock hook 420 post-tensioning moving cam 108 moves down unblock; When door lock needs to open, press door interlock switch, electromagnetic assembly 120 can be pulled upwardly stop pin 230 along E ' direction and reach off-position, thus namely locking sliding block 240 can move freely; Then, gate stop 270 moves downward along A ' direction, direction.The band moving cam 108 that moves downward of gate stop 270 moves downward, and after cam 108 to move downward bottom contact door lock box 109, the band moving cam that moves downward of gate stop 270 rotates along B ' direction (clockwise direction).Cam 108 moves downward along C ' direction and drives mounting bracket 106 also to move downward along C ' direction.When cam 108 rotationally moves, the surface of revolution 334 of surface of revolution 332 pairs of locking sliding blocks 240 of cam 108 bottom 330 applies motive force to the left, promotes locking sliding block 240 and gets back to original position to moving to the left along D ' direction.

Fig. 7 E is the structural representation that gate stop 270 is about to depart from door lock hook 420; As seen in figure 7e, cam 108 gets back to original position, and gate stop 270 departs from door lock hook 420, and the door of electrical equipment is opened.After cam 108 gets back to original position, upper contact surface 322 is bonded in cam post 110, locking sliding block 240 gets back to original position, withstand cam 108 on the right side of locking sliding block 240, the surface of revolution 334 on the right side of the locking sliding block 240 with the radian matched engages with the surface of revolution 332 of the side, bottom 330 of cam 108.

Fig. 7 F is the structural representation that stop pin 230 pushes open by key 250 of unblanking in an emergency situation.Situation is as shown in Figure 7 F that door lock 100 as seen in figure 7 c pins, and stop pin 230 is in latched position, and now occur the situations such as the such as unexpected power-off of electrical equipment, electromagnetic assembly 120 loses electric power.Stop pin 230 cannot be pulled upwardly along E ' direction by electromagnetic assembly 120 and remain in latched position, locking sliding block 240 is locked in fastening position, cam 108 be locked slide block 240 engaging cannot rotate, gate stop 270 is hooked by door lock hook 420, thus cannot open door lock 100.Now emergency release device of the present invention just can play a role and to be opened by door lock 100, particularly, key 250 of unblanking inserts in release aperture 265, during insertion, to unblank the magnet 235 of magnet 254 towards stop pin 230 lower end of unblanking of (or embedded) in key 250, because unblanking the magnet 254 of unblanking of (or embedded) identical with the polarity of the relative end of the magnet 235 of stop pin 230 lower end (be all N pole or be all S pole) in key 250, unblank to produce repulsion between key 250 and stop pin, stop pin 230 upwards boosts along E ' direction and reaches off-position by this repulsion, locking sliding block 240 thus can move freely.Along with gate stop 270 moves downward along A ' direction, direction, band moving cam 108 moves downward along C ' direction.After cam 108 to move downward bottom contact door lock box 109, the band moving cam that moves downward of gate stop 270 rotates along B ' direction (clockwise direction).Moving downward of cam 108 drives mounting bracket 106 also to move downward (as illustrated in fig. 7d) along C ' direction.When cam 108 rotationally moves, the surface of revolution 334 of surface of revolution 332 pairs of locking sliding blocks 240 of cam 108 bottom 330 applies motive force to the left, and promotion locking sliding block 240 moves to the left along D ' direction and gets back to original position.Gate stop 270 moves downward along A ' direction always and departs from door lock hook 420, and now the door of electrical equipment is opened (as Fig. 7 E so).

Although with reference to the detailed description of the invention shown in accompanying drawing, present invention is described, should be appreciated that door lock base of the present invention, door lock and emergency release device can have many versions under the spirit and scope not deviating from the present invention's instruction and background.Art technology those of ordinary skill also has different modes to change the parameter in disclosed embodiment of this invention by recognizing, the such as type of size, shape or element or material, all falls in the spirit and scope of the present invention and claim.

Also should be noted that the present invention in conjunction with washing machine to describe door lock mechanism of the present invention, but door lock mechanism of the present invention can be applied on any other electric equipments having identical (or similar) to require by those skilled in the art expediently.

Claims (21)

1. an electromagnetic door lock (100), comprises door lock box (101), it is characterized in that door lock box (101) comprising:

Locking device (230), locking device (230) has latched position and off-position; Locking device (230), when latched position, pins door lock (100); Locking device (230), when off-position, discharges door lock (100);

Be arranged on the magnet (235) on locking device (230);

Be arranged on the release aperture (265) on door lock box (101), for receiving magnet (254) of unblanking, when release aperture (265) receive described in unblank magnet (254) time, the magnet (235) of unblanking on magnet (254) promotion locking device (230), moves to off-position by locking device (230).

2. electromagnetic door lock (100) as claimed in claim 1, characterized by further comprising:

Cam (108), above the plane being arranged on the bottom (109) of described door lock box (101), described cam (108) is provided with door lock hook (420), for receiving and locking gate stop (270);

Locking sliding block (240), be arranged in parallel with the bottom (109) of described door lock box (101), the sliding block spring (360,362) that locking sliding block (240) is provided with by side promotes near described cam (108), when locking sliding block (240) is lockable motionless, cam (108) can not move;

Be inserted in electromagnetic door lock (100) at gate stop (270), when locking sliding block (240) moves to fastening position, locking device (230) is moved to latched position by driving and locks locking sliding block (240).

3. electromagnetic door lock (100) as claimed in claim 1, is characterized in that:

Described magnet of unblanking (254) is arranged on one end of key of unblanking (250).

4. electromagnetic door lock (100) as claimed in claim 1, is characterized in that:

Described magnet (235) is arranged on described locking device (230) one end near the bottom (109) of described door lock box (101).

5. electromagnetic door lock (100) as claimed in claim 3, is characterized in that:

Described release aperture (265) is arranged on the position corresponding with locking device (230), outside, bottom (109) of described door lock box (101), described in unblank key (250) can from door lock (100) the described release aperture of outside insertion (265).

6. electromagnetic door lock (100) as claimed in claim 5, is characterized in that:

Described magnet of unblanking (254) is relative with magnet (235) homopolarity.

7. electromagnetic door lock (100) as claimed in claim 3, is characterized in that:

Described key of unblanking (250) inserts end and is provided with some tooth wings (251).

8. electromagnetic door lock (100) as claimed in claim 7, is characterized in that:

Described release aperture (265) is provided with the suitable groove (252) of the some and described tooth wing (251) shape.

9. electromagnetic door lock (100) as claimed in claim 2, is characterized in that:

Described door lock box (101) is provided with mounting bracket (106), described mounting bracket (106) can do up and down (or reciprocal) motion relative to the bottom (109) of door lock box (101), described mounting bracket (106) is provided with two relative tops (112 along its length, 114), described two tops (112,114) are provided with relative mounting groove (301,302);

Camshaft (312 is extended from the both sides of described cam (108), 314), described camshaft (312, 314) mounting groove (301 on the top on described mounting bracket (106) is arranged on respectively, 302) in, make described cam (108) by described camshaft (312, 314) axis (B-B) around the length direction of mounting bracket (106) rotates, the middle part of described cam (108) is provided with door lock hook (420), for receiving gate stop (270), the top of described cam (108) is provided with step (321), described step (321) has upper contact surface (322) and lower contact surface (324),

Cam post (110), it is mounted to along with described cam (108) contacts with upper contact surface (322) or lower contact surface (324) around axis (B-B) rotation of the length direction of mounting bracket (106).

10. electromagnetic door lock (100) as claimed in claim 9, is characterized in that:

When rotating around the axis (B-B) of the length direction of mounting bracket (106) along with described cam (108), upper contact surface (322) or the lower contact surface (324) of cam post (110) and described step (321) contact.

11. electromagnetic door locks (100) as claimed in claim 9, is characterized in that:

Described locking sliding block (240) moves around along with cam (108) rotates; But when locking sliding block (240) is pinned motionless by described locking device (230), cam (108) can not move.

12. electromagnetic door locks (100) as claimed in claim 9, is characterized in that:

The upper contact surface (322) of described cam (108) is curved end, when cam (108) does not move, cam post (110) compresses curved end (322), makes cam (108) remain on initial position.

13. electromagnetic door locks (100) as claimed in claim 2, characterized by further comprising:

At least one sliding block spring (360,362), be arranged on the side of locking sliding block (240) away from cam (108), sliding block spring (360,362) applies motive force to locking sliding block (240) all the time.

14. electromagnetic door locks (100) as claimed in claim 9, is characterized in that:

Bottom (330) edge, side of described cam (108) is provided with surface of revolution (332), locking sliding block (240) is provided with a surface of revolution (334) near the edge of cam (108) side, and the surface of revolution 334 of locking sliding block (240) matches with the surface of revolution (332) of cam bottom;

When inserting gate stop (270), cam (108) is promoted to be rotated counterclockwise to move up by gate stop (270) again, the surface of revolution (332) of cam (108) bottom (330) is away from the surface of revolution (334) of locking sliding block (240), and locking sliding block (240) is mobile to cam (108) under sliding block spring (360,362) promotes;

When extracting gate stop (270), cam (108) is pulled to move down by gate stop (270) and turns clockwise, and the surface of revolution (332) of cam (108) bottom (330) promotes locking sliding block (240) and gets back to initial position.

15. electromagnetic door locks (100) as claimed in claim 9, is characterized in that:

Described bottom (109) is provided with two support columns (380,382) raised up, two tops (112 of described mounting bracket (106), 114) inside is provided with two chutes towards bottom (109) (503,504), and described support column (380,382) inserts the rectilinear movement limiting mounting bracket (106) in chute (503,504) respectively.

16. electromagnetic door locks (100) as claimed in claim 15, is characterized in that:

Described bottom (109) is respectively equipped with two spring stacks projected upwards (384,386) in two support columns (380,382) outside, described mounting bracket (106) two top (112,114) inside is provided with the groove (508,509) of two adaptation spring stacks towards bottom (109) (384,386);

Two support springs (340,342), be set on described spring stack (384,386), be clipped between described bottom (109) and mounting bracket (106), when gate stop (270) inserts door lock hole (204), first actuating cam (108) is rotated counterclockwise, after the upper contact surface (322) rotating to cam (108) leaves cam post (110), support spring (340,342) promotes mounting bracket (106) and cam (108) upwards moves linearly.

17. electromagnetic door locks (100) as claimed in claim 16, is characterized in that:

Described support column (380,382) termination is provided with hole (388,389), and the two ends of described cam post (110) are inserted in described hole (388,389) through described mounting bracket (106).

18. electromagnetic door locks (100) as claimed in claim 11, is characterized in that:

Locking sliding block (240) is provided with slide block lockhole (260), when locking sliding block (240) moves to fastening position, described locking device (230) inserts slide block lockhole (260) locking locking sliding block (240).

19. electromagnetic door locks (100) according to claim 9, characterized by further comprising:

Electromagnetic assembly (120), for releasing and locking device of retracting (230) after machinery equipment energising, in order to locking and open locking slide block (240).

20. 1 kinds of door lock assemblies, is characterized in that:

Use the electromagnetic door lock (100) described in claim 1-19, and key of unblanking (250).

21. 1 kinds of electrical equipment, is characterized in that:

Use the electromagnetic door lock (100) described in claim 1-19, and key of unblanking (250).