Washing machine door lock with door closing induction function

Abstract

The washing machine door lock with the door closing induction function comprises an outer shell, a cam is arranged in the outer shell, a first torsional spring is arranged between the cam and the outer shell, a first sliding block is further arranged in the outer shell, and a first supporting block is arranged in the first sliding block; a locking mechanism for limiting movement of the first sliding block is arranged above the outer shell and comprises a coil control assembly, a lifting sliding block, a locking sliding block, a first metal contact piece and a second metal contact piece. The coil control assembly comprises a coil body, the coil body generates an electric signal when the first sliding block drives the first supporting block to move, and the coil control assembly drives the locking sliding block to move up and down relative to the first sliding block when the coil body is powered on. The first metal contact piece and the second metal contact piece are electrically connected with the coil body. The coil control assembly is independently controlled to work through the first metal contact piece and the second metal contact piece, the speed of feeding back electric signals by the coil control assembly is higher, and the locking speed of the locking sliding block is higher and more reliable.

Description

Technical Field

[0001] The utility model belongs to the technical field of washing machine door locks, and in particular relates to a washing machine door lock with door closing induction. Background Art

[0002] The door lock of a washing machine is a commonly used accessory on a washing machine. In order to prevent the door of the washing machine from being opened at will, the door lock of the washing machine is often equipped with an induction locking device. Generally, the existing door lock of a washing machine usually includes a locking cam, a limit slider, a support slider, a lifting slider, a locking slider, a locking drive block and an electromagnetic coil drive device. The electromagnetic coil drive device includes a number of metal contacts connected to the main control circuit board; when the door of the washing machine is closed, the door hook on the door will push the locking cam to rotate, and when the locking cam rotates, the limit slider moves and clamps the locking cam; when the limit slider moves, it drives the support slider to move, and after the support slider moves, the bottom of the lifting slider supports it, so that the lifting slider moves downward, so that the contacts on the metal contacts fit each other, so that the electromagnetic coil drive device will be in a conducting state; when the electromagnetic coil drive device is powered on, it pulls the locking drive block to move, and when the locking drive block slides, it drives the locking slider to clamp into the hole of the limit slider, so that the limit slider completely clamps the locking cam, the locking cam cannot rotate, and the washing machine door is in a reliably closed state. However, the coil on the existing electromagnetic coil drive device is often connected to the main control circuit board on the washing machine. After the coil is energized, it is necessary to switch between strong and weak electrical signals on the main control circuit board. In this way, the main control circuit board recognizes the switch signal of the washing machine door closing slowly, and the speed at which the main control circuit board sends feedback electrical signals to the electromagnetic coil drive device is slow, which causes a certain delay in the electromagnetic coil drive device driving the locking slider to move, and the locking slider cannot immediately lock the limit slider. Since there is a certain delay in locking the locking slider, the reliability of the product's locking is affected. Therefore, it is necessary to design a washing machine door lock with door closing sensing to overcome the above difficulties. Summary of the invention

[0003] In view of the problems existing in the prior art, the utility model designs a washing machine door lock with door closing induction. The utility model arranges a locking mechanism in an outer shell, and controls the operation of a coil control component separately through a first metal contact piece and a second metal contact piece. The coil control component feeds back an electrical signal faster, and the locking slider locks faster and more reliably.

[0004] The invention objective of the utility model is achieved through the following technical solutions: a washing machine door lock with door closing induction, comprising an outer shell, a cam hinged thereto is arranged in the outer shell, a first torsion spring is arranged between the cam and the outer shell, a first slider for limiting the rotation of the cam is also arranged in the outer shell, a first support block slidably connected thereto is arranged in the first slider, the first slider and the first support block are both slidably connected to the bottom of the outer shell; a locking mechanism for limiting the movement of the first slider is arranged above the outer shell, the locking mechanism comprises a coil control assembly, a lifting slider, a locking slider, a first metal contact and a second metal contact; the coil control assembly comprises a coil body, the lifting slider is arranged directly above the first support block, the coil body generates an electrical signal when the first slider drives the first support block to move, and when the coil body is energized, the coil control assembly drives the locking slider to move up and down relative to the first slider; the first support block is arranged adjacent to the first metal contact, and the first metal contact and the second metal contact are both electrically connected to the coil body.

[0005] Preferably, a guiding inclined groove for installing the first slider is provided in the outer shell, and a mounting notch for placing the first support block is provided in the first slider; a horizontal guide rail for installing the first support block is provided in the outer shell, and the horizontal guide rail is arranged perpendicular to the first metal contact and the second metal contact; the end of the first support block is arranged adjacent to the end of the first metal contact, and the first metal contact and the second metal contact are arranged side by side and adjacent to each other; when the first support block moves to the right, the contact points on the first metal contact and the second metal contact fit into each other, and when the first metal contact and the second metal contact are turned on, the coil control component drives the locking slider to move.

[0006] When the door of the washing machine is closed, the lock hook on the door will extend into the door lock and push the cam to rotate, so that the lock hook can be stuck in the notch of the cam; after the cam rotates, the first slider close to the end of the cam loses its limit, so that the first slider moves to the right under the action of the first spring, thereby blocking the cam and preventing the cam from rotating in the opposite direction. When the first slider moves to the right, the first slider will synchronously drive the first support block to move to the right; the first support block will approach the first metal contact, so that the contact points on the first metal contact and the second metal contact will fit each other; because the first metal contact and the second metal contact are connected to a separate weak current circuit board, the weak current circuit board can immediately send an electrical signal to the coil control component, so that the coil control component can drive the locking slider to move, and the movement of the first slider will be restricted after the locking slider moves; therefore, when the door of the washing machine is closed, the locking mechanism can quickly lock the first slider through the first metal contact and the second metal contact, so that it is stably stuck in the cam, and the locking mechanism has a fast and reliable locking speed.

[0007] Preferably, the first metal contact and the second metal contact are both provided with positioning slots, and the outer shell is provided with a positioning notch; when the first metal contact and the second metal contact are installed in the outer shell, the positioning slots are arranged in the positioning notch; a first spring is provided between the first slider and the guide bevel groove, and the first spring is arranged along the axial direction of the guide bevel groove; the first slider is provided with a placement through hole for placing the locking slider.

[0008] By setting a positioning notch and a positioning slot, the first metal contact and the second metal contact are limited in the outer shell to prevent the first metal contact and the second metal contact from moving relative to the outer shell; a placement through hole is provided on the first slider, so that when the first slider moves, the placement through hole will automatically align with the locking slider, and the locking slider moves downward and is stuck in the placement through hole, so that the first slider cannot slide further relative to the outer shell, and the locking effect is better and more reliable.

[0009] Preferably, a first groove is provided on the end of the outer shell close to the first support block, and a separation protrusion is provided between the first groove and the positioning notch; the end of the first metal contact piece passes through the first groove, and the end of the second metal contact piece extends to the first groove; the separation protrusion is arranged between the first metal contact piece and the second metal contact piece.

[0010] The first groove is provided to facilitate installation of the first metal contact and the second metal contact; the separation protrusion separates the first metal contact and the second metal contact to avoid accidental contact between the first metal contact and the second metal contact.

[0011] Preferably, the locking mechanism further comprises a locking shell, a second spring, a third metal contact, a fourth metal contact and a fifth metal contact; the locking shell is provided with a first slide groove for installing a lifting slider, and is also provided with a second slide groove for installing the locking slider, and the first slide groove and the second slide groove are both arranged perpendicular to the bottom of the outer shell; the locking shell is provided with a first channel at a position adjacent to the first slide groove, and a second spring is arranged in the first channel; a first protrusion is provided on the side of the lifting slider, and a placement groove is provided in the first protrusion; the pin of the third metal contact is arranged in the first channel and adjacent to the placement groove, and ... One end of the second spring rests on the pin of the coil body, and the other end of the second spring rests on the end face of the first protrusion; when the lifting slider drives the first protrusion to move downward, the second spring and the pin of the third metal contact are connected; the fourth metal contact is arranged between the coil body and the third metal contact, and the fourth metal contact is electrically connected to the coil body; the coil control component is arranged directly above the first slider, and when the first slider drives the first support block to move right, the lifting slider automatically falls, and after the lifting slider falls, the coil control component is automatically turned on; the third metal contact is a common end, and the third metal contact is electrically connected to the main control circuit board.

[0012] When the door of the washing machine is closed, the lock hole of the door pushes the cam, and after the cam rotates, the first slider moves rightward, and when the first slider moves rightward, it drives the first support block to move rightward along the horizontal guide rail; before the door is closed, the first support block fits with the bottom of the lifting slider; then after the door is closed, the first support block moves relative to the lifting slider, and the lifting slider moves downward; when the lifting slider moves downward, the second spring automatically extends axially, and the pin of the third metal contact piece rises relative to the placement groove, so that the end of the second spring will be in a conductive state with the pin of the third metal contact piece; because the top of the second spring is connected to the pin of the coil body, the third metal contact piece will be in a conductive state with the coil body The fourth metal contact piece is electrically connected to the coil body and the main control circuit board; since the third metal contact piece is connected to the main control circuit board, the main control circuit board receives the electrical signal, and then through the rotation of the strong electric signal and the weak electric signal, the main control circuit board will control the coil control component to be turned on, and finally the coil control component can drive the locking slider to move; here, the circuits where the third metal contact piece, the first metal contact piece and the second metal contact piece are located are independent of each other, and the coil control component can also be driven by the third metal contact piece and the fourth metal contact piece, but the circuits where the first metal contact piece and the second metal contact piece are located have a better priority, and the reaction time of driving the coil control component is faster.

[0013] Preferably, the coil control assembly also includes an electric drive body, a pull rod, a return spring, a locking drive block and a second torsion spring; a vertical slide groove for installing the locking drive block is provided in the locking shell, and the locking drive block is connected to the pull rod; the coil body is arranged in the electric drive body, and the electric drive body controls the extension and retraction of the pull rod when the coil body is energized; a limiting protrusion is provided on the locking shell, one end of the return spring abuts against the limiting protrusion, and the other end abuts against the inner wall of the locking drive block; a sliding channel is provided at the bottom of the vertical slide groove, one end of the second torsion spring is arranged in the sliding channel, and the other end of the second torsion spring is installed in the hole of the locking drive block; the side of the locking drive block is slidably connected to the locking slider.

[0014] When the coil body in the coil control assembly is energized and receives an electrical signal, the electric drive main body working control rod automatically contracts once, so that the rod will drive the locking drive block to move relative to the vertical slide groove; since a reset spring is provided between the locking drive block and the limiting protrusion of the locking shell, the locking drive block will immediately reset and move under the action of the reset spring after contraction. A second torsion spring is provided between the locking drive block and the vertical slide groove, and when the locking drive block moves, it drives the end of the second torsion spring to move in the sliding channel; when the locking drive block moves, it simultaneously drives the locking slider to move up and down, so that the locking slider restricts the movement of the first slider.

[0015] Preferably, a guide structure is provided on the side of the locking drive block, and the guide structure includes a first rib and a second rib; a second protrusion is provided on the side of the locking slider, and the second protrusion is slidably connected to the guide structure; the second rib includes a first inclined surface and a first horizontal surface, and the first rib and the first inclined surface are arranged in parallel; the sliding channel includes a limit end and a disengagement end, and the disengagement end is arranged above the limit end, and the limit end and the disengagement end are connected to each other.

[0016] Before the door of the washing machine is closed, the end of the second torsion spring is stuck at the limit end, and the second protrusion of the locking slider is in contact with the first horizontal plane. At this time, the locking slider is above the first slider, and the first slider is not limited and can move along the guide chute. At this time, the end of the second torsion spring is stuck on the limit end. When the door of the washing machine is closed, the lock hook of the door will push the cam, and the first slider will move to the right; after the first slider moves, the lifting slider moves down and the coil body is turned on, so the coil control component will control the electric drive body to extend and retract, and the locking drive block will first move along the axial direction of the vertical slide groove close to the coil body, and then move away from the coil body under the action of the reset spring. During the movement of the locking drive block, the second torsion spring will first disengage from the limiting end and then move along the sliding channel and finally get stuck on the disengagement end; therefore, after the coil body receives a signal once, the locking drive block first moves downward toward the coil body and then moves upward away from the coil body; since the second protrusion is stuck in the guide structure and the second protrusion is finally stuck on the first inclined surface; when the locking drive block moves, it will drive the locking slider to move, and the locking slider will move downward relative to the second slide groove, so after the washing machine door is closed, the locking slider will automatically get stuck in the placement through hole of the first slider; since the locking drive block is limited by the second torsion spring at this time, the locking drive block will not move relative to the vertical slide groove without the action of external force, so the locking slider can reliably clamp the first slider. Similarly, when the washing machine door needs to be opened, an electrical signal is sent to the coil control component through the main control circuit board, so that the locking drive block moves down first and then up, and the second torsion spring will move from the disengagement end to the limit end again, and the end of the second protrusion will fit the first horizontal plane again, and the locking slider will move up relative to the first slider; the first slider will lose its limit, and the user can manually open the washing machine door.

[0017] Preferably, a horizontal slide groove is also provided on the outer shell, and a second slide block is provided on the horizontal slide groove, and the horizontal slide groove and the side wall of the cam are arranged perpendicular to each other; a third spring is provided between the second slide block and the inner wall of the horizontal slide groove, and the end of the second slide block abuts against the side wall of the cam; a third slide groove is also provided in the locking shell, and a limit slide block is provided in the third slide groove, and the bottom of the limit slide block is arranged in contact with the second slide block; the top of the limit slide block is arranged adjacent to the lower end surface of the third metal contact, and the contact of the fifth metal contact is arranged directly below the third metal contact, and when the limit slide block moves downward, the contacts on the fifth metal contact and the third metal contact are arranged in contact with each other.

[0018] When the door of the washing machine is closed, the lock hook on the door will push the end of the second slider to move, so that the second slider will move away from the side wall of the cam, and the third spring will be in a further compressed state; at this time, the second slider moves to the left, the end of the second slider and the limit slider will be misaligned, the bottom of the limit slider loses support, and the limit slider will move down relative to the third slider; before the door of the washing machine is closed, the end of the third metal contact is in an elastic deformation state, and the third metal contact and the fifth metal contact are separated from each other. When the limit slider is away from the third metal contact, the third metal contact will fit with the fifth metal contact, and the main control circuit board will receive the switch signal and then send a working instruction to the washing machine; therefore, only after the door of the washing machine is closed can the washing machine receive the working instruction and start working. When the door of the washing machine is opened, the cam will automatically reset, so that the second slider will approach the cam under the action of the third spring, then the second slider will push the limit slider up when it moves, and the limit slider will separate the third metal contact and the fifth metal contact after it rises, and the main control circuit board cannot send a working instruction to the washing machine, and the washing machine cannot be started at this time.

[0019] Preferably, a third protrusion is provided on the side surface of the limit slider, and a second inclined surface is provided on the upper end surface of the second slider; when the second slider moves to the left, the third protrusion of the limit slider moves along the second inclined surface.

[0020] Since the second slider is provided with a second inclined surface, and the third protrusion on the limit slider is arranged adjacent to the second inclined surface, the second sliding movement can drive the limit slider to move up and down relative to the third slide groove, thereby facilitating the control of the conduction state of the third metal contact and the fifth metal contact.

[0021] Compared with the prior art, the utility model has the following beneficial effects: the utility model adds a first metal contact and a second metal contact to the locking mechanism, and the first metal contact and the second metal contact control the coil control component through a separate weak current circuit board, so that after the first metal contact and the second metal contact are turned on, the control coil control component can directly control the movement of the locking slider, so that the locking slider limits the movement of the first slider. When the door of the washing machine is closed, the lock hook of the door pushes the cam to rotate, the rotation of the cam drives the first slider to move, and the movement of the first slider drives the first support block to move; then after the first support block moves, the first metal contact and the second metal contact can be turned on, so that the coil control component can quickly drive the locking slider to move, and the locking speed is fast and reliable. The coil control component can also generate electrical signals through the third metal contact and the fourth metal contact, so that the locking process of the locking mechanism is more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional diagram of the utility model;

[0023] Figure 2 It is a three-dimensional diagram of the hidden locking mechanism of the utility model;

[0024] Figure 3 An exploded view of the hidden locking mechanism of the utility model;

[0025] Figure 4 is a three-dimensional diagram of the locking mechanism;

[0026] Figure 5 An exploded view of the locking mechanism;

[0027] Figure 6 is the internal structure diagram of the locking mechanism;

[0028] Figure 7 This is a diagram of the internal structure of the locking mechanism from another perspective;

[0029] Figure 8 is a three-dimensional view of a locking housing;

[0030] Fig. 9 is a stereogram of the outer shell;

[0031] Fig.10 It is a three-dimensional diagram of the locking drive block.

[0032] Markings in the figure: 1, outer shell; 2, cam; 3, first torsion spring; 4, first slider; 41, installation notch; 5, first support block; 6, locking mechanism; 61, coil control component; 611, coil body; 612, locking slider; 613, electric drive body; 614, pull rod; 615, reset spring; 616, locking drive block; 617, second torsion spring; 618, guide structure; 619, first rib; 620, second rib; 623, second protrusion; 624, first inclined surface; 625, first horizontal surface; 62, lifting slider; 621, first protrusion; 622, placement groove; 63, first metal contact; 64, second metal contact; 65, Locking shell; 66, second spring; 67, third metal contact; 68, fourth metal contact; 69, fifth metal contact; 601, first slide groove; 602, second slide groove; 603, first channel; 604, vertical slide groove; 605, limiting protrusion; 606, sliding channel; 607, limiting end; 608, disengagement end; 7, guide inclined groove; 8, horizontal guide rail; 9, positioning slot; 10, positioning notch; 11, first spring; 12, placement through hole; 13, first groove; 14, partition protrusion; 15, horizontal slide groove; 16, second slider; 17, third spring; 18, third slide groove; 19, limiting slider; 20, third protrusion; 21, second inclined surface. DETAILED DESCRIPTION

[0033] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings:

[0034] like Figures 1 to 10 As shown, this embodiment discloses a washing machine door lock with door closing induction, comprising an outer shell 1, a cam 2 hinged thereto is arranged in the outer shell 1, a first torsion spring 3 is arranged between the cam 2 and the outer shell 1, a first slider 4 for limiting the rotation of the cam 2 is also arranged in the outer shell 1, a first support block 5 slidably connected thereto is arranged in the first slider 4, and the first slider 4 and the first support block 5 are both slidably connected to the bottom of the outer shell 1; a locking mechanism 6 for limiting the movement of the first slider 4 is arranged above the outer shell 1, and the locking mechanism 6 comprises a coil control component 61, a lift A lowering slider 62, a locking slider 612, a first metal contact piece 63 and a second metal contact piece 64; the coil control component 61 includes a coil body 611, and the lifting slider 62 is arranged directly above the first support block 5. When the first slider 4 drives the first support block 5 to move, the coil body 611 generates an electrical signal. When the coil body 611 is energized, the coil control component 61 drives the locking slider 612 to move up and down relative to the first slider 4; the first support block 5 is adjacent to the first metal contact piece 63, and the first metal contact piece 63 and the second metal contact piece 64 are both electrically connected to the coil body 611.

[0035] A guiding bevel 7 for installing the first slider 4 is provided in the outer shell 1, and a mounting notch 41 for placing the first support block 5 is provided in the first slider 4; a horizontal guide rail 8 for installing the first support block 5 is provided in the outer shell 1, and the horizontal guide rail 8 and the first metal contact 63 and the second metal contact 64 are arranged perpendicular to each other; the end of the first support block 5 is arranged adjacent to the end of the first metal contact 63, and the first metal contact 63 and the second metal contact 64 are arranged side by side and adjacent to each other; when the first support block 5 moves to the right, the contact points on the first metal contact 63 and the second metal contact 64 fit each other, and when the first metal contact 63 and the second metal contact 64 are turned on, the coil control component 61 drives the locking slider 612 to move. The first metal contact 63 and the second metal contact 64 are both provided with a positioning slot 9, and the outer shell 1 is provided with a positioning notch 10; when the first metal contact 63 and the second metal contact 64 are installed in the outer shell 1, the positioning slot 9 is arranged in the positioning notch 10; a first spring 11 is arranged between the first slider 4 and the guide slot 7, and the first spring 11 is arranged along the axial direction of the guide slot 7; the first slider 4 is provided with a placement through hole 12 for placing the locking slider 612. The end of the outer shell 1 close to the first support block 5 is provided with a first groove 13, and a separation protrusion 14 is also provided between the first groove 13 and the positioning notch 10; the end of the first metal contact 63 passes through the first groove 13, and the end of the second metal contact 64 extends to the first groove 13; the separation protrusion 14 is arranged between the first metal contact 63 and the second metal contact 64.

[0036] The locking mechanism 6 also includes a locking shell 65, a second spring 66, a third metal contact 67, a fourth metal contact 68 and a fifth metal contact 69; the locking shell 65 is provided with a first slide groove 601 for installing the lifting slider 62, and is also provided with a second slide groove 602 for installing the locking slider 612, and the first slide groove 601 and the second slide groove 602 are both arranged perpendicular to the bottom of the outer shell 1; the locking shell 65 is provided with a first channel 603 at a position adjacent to the first slide groove 601, and the second spring 66 is arranged in the first channel 603; the side of the lifting slider 62 is provided with a first protrusion 621, and the first protrusion 621 is provided with a placement groove 622; the pin of the third metal contact 67 is arranged in the first channel 603 and is aligned with the placement groove 622 The second spring 66 is arranged adjacent to each other, with one end of the second spring 66 resting on the pin of the coil body 611, and the other end of the second spring 66 resting on the end face of the first protrusion 621; when the lifting slider 62 drives the first protrusion 621 to move downward, the pin of the second spring 66 and the third metal contact 67 are connected; the fourth metal contact 68 is arranged between the coil body 611 and the third metal contact 67, and the fourth metal contact 68 is electrically connected to the coil body 611; the coil control component 61 is arranged directly above the first slider 4, and when the first slider 4 drives the first support block 5 to move right, the lifting slider 62 automatically falls, and after the lifting slider 62 falls, the coil control component 61 is automatically turned on; the third metal contact 67 is a common end, and the third metal contact 67 is electrically connected to the main control circuit board. The coil control assembly 61 also includes an electric drive body 613, a pull rod 614, a return spring 615, a locking drive block 616 and a second torsion spring 617; a vertical slide groove 604 for installing the locking drive block 616 is provided in the locking shell 65, and the locking drive block 616 is connected to the pull rod 614; the coil body 611 is arranged in the electric drive body 613, and the electric drive body 613 controls the extension and retraction of the pull rod 614 when the coil body 611 is energized; a limiting protrusion 605 is provided on the locking shell 65, one end of the return spring 615 abuts against the limiting protrusion 605, and the other end abuts against the inner wall of the locking drive block 616; a sliding channel 606 is provided at the bottom of the vertical slide groove 604, one end of the second torsion spring 617 is arranged in the sliding channel 606, and the other end of the second torsion spring 617 is installed in the hole of the locking drive block 616; the side of the locking drive block 616 is slidably connected with the locking slider 612.A guide structure 618 is provided on the side of the locking drive block 616, and the guide structure 618 includes a first rib 619 and a second rib 620; a second protrusion 623 is provided on the side of the locking slider 612, and the second protrusion 623 is slidably connected to the guide structure 618; the second rib 620 includes a first inclined surface 624 and a first horizontal surface 625, and the first rib 619 and the first inclined surface 624 are arranged in parallel; the sliding channel 606 includes a limit end 607 and a disengagement end 608, and the disengagement end 608 is arranged above the limit end 607, and the limit end 607 and the disengagement end 608 are connected to each other.

[0037] The outer shell 1 is also provided with a horizontal slide groove 15, and the horizontal slide groove 15 is provided with a second slider 16, and the horizontal slide groove 15 and the side wall of the cam 2 are arranged perpendicular to each other; a third spring 17 is provided between the second slider 16 and the inner wall of the horizontal slide groove 15, and the end of the second slider 16 abuts against the side wall of the cam 2; a third slide groove 18 is also provided in the locking shell 65, and a limiting slider 19 is provided in the third slide groove 18, and the bottom of the limiting slider 19 is arranged to fit the second slider 16; the top of the limiting slider 19 is arranged adjacent to the lower end surface of the third metal contact 67, and the contact of the fifth metal contact 69 is arranged directly below the third metal contact 67, and when the limiting slider 19 moves downward, the contacts on the fifth metal contact 69 and the third metal contact 67 are arranged to fit each other. The side surface of the limit slider 19 is provided with a third protrusion 20 , and the upper end surface of the second slider 16 is provided with a second inclined surface 21 ; when the second slider 16 moves to the left, the third protrusion 20 of the limit slider 19 moves along the second inclined surface 21 .

[0038] The specific operation process of this embodiment is as follows: when the door of the washing machine is closed, the lock hook on the door will extend into the door lock and push the cam 2 to rotate, so that the lock hook can be stuck in the notch of the cam 2; after the cam 2 rotates, the first slider 4 loses its limit position near the end of the cam 2, so that the first slider 4 moves to the right under the action of the first spring 11, thereby blocking the cam 2 and preventing the cam 2 from rotating in the opposite direction. When the first slider 4 moves to the right, the first slider 4 will synchronously drive the first support block 5 to move to the right; the first support block 5 will approach the first metal contact 63, so that the contact points on the first metal contact 63 and the second metal contact 64 will fit each other; since the first metal contact and the second metal contact are connected to separate weak-current circuit boards, the weak-current circuit board can immediately send an electrical signal to the coil control component 61, so that the coil control component 61 can drive the locking slider 612 to move, and the locking slider 612 will limit the movement of the first slider 4 after moving; therefore, when the washing machine door is closed, the locking mechanism 6 can quickly lock the first slider 4 through the first metal contact 63 and the second metal contact 64, so that it is stably stuck in the cam 2, and the locking mechanism 6 has a fast and reliable locking speed.

[0039] The specific working principle of the locking mechanism 6 is as follows: before the door of the washing machine is closed, the end of the second torsion spring 617 is stuck on the limit end 607, and the second protrusion 623 of the locking slider 612 is in contact with the first horizontal surface 625. At this time, the locking slider 612 is above the first slider 4, and the first slider 4 is not limited and can move along the guide chute 7. At this time, the end of the second torsion spring 617 is stuck on the limit end 607. When the door of the washing machine is closed, the lock hook of the door will push the cam 2, and the first slider 4 will move to the right; after the first slider 4 moves, the first support block 5 turns on the coil body 611, and then the coil control assembly 61 will control the electric drive body 613 to extend and retract, and then the locking drive block 616 will first move along the axial direction of the vertical slide groove 604 close to the coil body 611, and then move away from the coil body 611 under the action of the reset spring 615. When the locking drive block 616 moves, the second torsion spring 617 will first disengage from the limiting end 607 and then move along the sliding channel 606, and finally get stuck on the disengagement end 608; therefore, after the coil body 611 receives a signal, the locking drive block 616 first moves downward close to the coil body 611, and then moves upward away from the coil body 611; since the second protrusion 623 is stuck in the guide structure 618 and the second protrusion 623 is finally stuck on the first inclined surface 624; when the locking drive block 616 moves, it will drive the locking slider 612 to move, and the locking slider 612 moves downward relative to the second slide groove 602. Then, after the washing machine door is closed, the locking slider 612 will automatically get stuck in the placement through hole 12 of the first slider 4; since the locking drive block 616 is limited by the second torsion spring 617 at this time, the locking drive block 616 will not move relative to the vertical slide groove 604 without the action of external force, so the locking slider 612 can reliably get stuck in the first slider 4. Similarly, when it is necessary to open the door of the washing machine, an electrical signal is sent to the coil control component 61 through the main control circuit board, so that the locking drive block 616 moves down first and then up, and then the second torsion spring 617 will move from the disengagement end 608 back to the limit end 607, and the end of the second protrusion 623 will be re-fitted with the first horizontal plane 625, and the locking slider 612 will move up relative to the first slider 4; the first slider 4 will lose its limit, and the user can manually open the door of the washing machine.

[0040] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A washing machine door lock with door closing induction, comprising an outer shell (1), a cam (2) hingedly connected to the outer shell (1) is provided inside the outer shell (1), a first torsion spring (3) is provided between the cam (2) and the outer shell (1), and the characteristics are: The outer shell (1) is further provided with a first slider (4) for limiting the rotation of the cam (2); the first slider (4) is provided with a first support block (5) slidably connected thereto; the first slider (4) and the first support block (5) are both slidably connected to the bottom of the outer shell (1); a locking mechanism (6) for limiting the movement of the first slider (4) is provided above the outer shell (1); the locking mechanism (6) comprises a coil control component (61), a lifting slider (62), a locking slider (612), a first metal contact sheet (63) and a second metal contact sheet (64); The coil control component (61) comprises a coil body (611); a lifting slider (62) is arranged directly above the first support block (5); when the first slider (4) drives the first support block (5) to move, the coil body (611) generates an electrical signal; when the coil body (611) is energized, the coil control component (61) drives the locking slider (612) to move up and down relative to the first slider (4); the first support block (5) is arranged adjacent to the first metal contact sheet (63); and the first metal contact sheet (63) and the second metal contact sheet (64) are both electrically connected to the coil body (611).

2. The washing machine door lock with door closing induction according to claim 1, characterized in that: The outer shell (1) is provided with a guide inclined groove (7) for mounting a first slider (4), and the first slider (4) is provided with a mounting notch (41) for placing a first support block (5); the outer shell (1) is provided with a horizontal guide rail (8) for mounting the first support block (5), and the horizontal guide rail (8) and the first metal contact (63) and the second metal contact (64) are arranged perpendicular to each other; the end of the first support block (5) is arranged adjacent to the end of the first metal contact (63), and the first metal contact (63) and the second metal contact (64) are arranged side by side and adjacent to each other; when the first support block (5) moves to the right, the contact points on the first metal contact (63) and the second metal contact (64) are in contact with each other, and when the first metal contact (63) and the second metal contact (64) are turned on, the coil control component (61) drives the locking slider (612) to move.

3. The washing machine door lock with door closing induction according to claim 2, characterized in that: The first metal contact piece (63) and the second metal contact piece (64) are both provided with a positioning slot (9), and the outer shell (1) is provided with a positioning notch (10); when the first metal contact piece (63) and the second metal contact piece (64) are installed in the outer shell (1), the positioning slot (9) is arranged in the positioning notch (10); a first spring (11) is provided between the first slider (4) and the guide inclined groove (7), and the first spring (11) is arranged along the axial direction of the guide inclined groove (7); and the first slider (4) is provided with a placement through hole (12) for placing a locking slider (612).

4. The washing machine door lock with door closing induction according to claim 3, characterized in that: A first groove (13) is provided on the end of the outer shell (1) close to the first support block (5), and a separation protrusion (14) is provided between the first groove (13) and the positioning notch (10); the end of the first metal contact (63) passes through the first groove (13), and the end of the second metal contact (64) extends to the first groove (13); the separation protrusion (14) is arranged between the first metal contact (63) and the second metal contact (64).

5. The washing machine door lock with door closing induction according to claim 1, characterized in that: The locking mechanism (6) further comprises a locking shell (65), a second spring (66), a third metal contact piece (67), a fourth metal contact piece (68) and a fifth metal contact piece (69); the locking shell (65) is provided with a first slide groove (601) for installing the lifting slider (62), and is also provided with a second slide groove (602) for installing the locking slider (612), the first slide groove (601) and the second slide groove (602) being arranged perpendicular to the bottom of the outer shell (1); the locking shell (65) is provided with a first channel (603) at a position adjacent to the first slide groove (601), and the first channel (603) is provided with a second spring (66); the side surface of the lifting slider (62) is provided with a first protrusion (621), and the first protrusion (621) is provided with a placement groove (622); the pin of the third metal contact piece (67) is arranged in the first channel (603) and is in contact with the placement groove (612); The first protrusion (621) and the second protrusion (622) are arranged adjacent to each other, one end of the second spring (66) abuts against the pin of the coil body (611), and the other end of the second spring (66) abuts against the end surface of the first protrusion (621); when the lifting slider (62) drives the first protrusion (621) to move downward, the second spring (66) and the pin of the third metal contact piece (67) are connected; the fourth metal contact piece (68) is arranged between the coil body (611) and the third metal contact piece (67), and the fourth metal contact piece (68) is electrically connected to the coil body (611); the coil control component (61) is arranged directly above the first slider (4), and when the first slider (4) drives the first support block (5) to move right, the lifting slider (62) automatically falls, and after the lifting slider (62) falls, the coil control component (61) is automatically connected; the third metal contact piece (67) is a common terminal, and the third metal contact piece (67) is electrically connected to the main control circuit board.

6. The washing machine door lock with door closing induction according to claim 5, characterized in that: The coil control assembly (61) further comprises an electric drive body (613), a pull rod (614), a return spring (615), a locking drive block (616) and a second torsion spring (617); a vertical slide groove (604) for installing the locking drive block (616) is provided in the locking shell (65), and the locking drive block (616) is connected to the pull rod (614); the coil body (611) is arranged in the electric drive body (613), and when the coil body (611) is energized, the electric drive body (613) controls the pull rod (614) to extend and retract; A limiting protrusion (605) is provided on the locking shell (65), one end of the return spring (615) abuts against the limiting protrusion (605), and the other end abuts against the inner wall of the locking drive block (616); a sliding channel (606) is provided at the bottom of the vertical slide groove (604), one end of the second torsion spring (617) is arranged in the sliding channel (606), and the other end of the second torsion spring (617) is installed in the hole of the locking drive block (616); the side surface of the locking drive block (616) is slidably connected to the locking slider (612).

7. The washing machine door lock with door closing induction according to claim 6, characterized in that: A guide structure (618) is provided on the side of the locking drive block (616), and the guide structure (618) includes a first rib (619) and a second rib (620); a second protrusion (623) is provided on the side of the locking slider (612), and the second protrusion (623) is slidably connected to the guide structure (618); the second rib (620) includes a first inclined surface (624) and a first horizontal surface (625), and the first rib (619) and the first inclined surface (624) are arranged in parallel; the sliding channel (606) includes a limit end (607) and a disengagement end (608) provided therein, and the disengagement end (608) is arranged above the limit end (607), and the limit end (607) and the disengagement end (608) are connected to each other.

8. The washing machine door lock with door closing sensor according to claim 5, characterized in that: The outer shell (1) is also provided with a horizontal slide groove (15), and the horizontal slide groove (15) is provided with a second slider (16), and the horizontal slide groove (15) and the side wall of the cam (2) are arranged perpendicular to each other; a third spring (17) is provided between the second slider (16) and the inner wall of the horizontal slide groove (15), and the end of the second slider (16) abuts against the side wall of the cam (2); a third slide groove (18) is also provided in the locking shell (65), and a limiting slider (19) is provided in the third slide groove (18), and the bottom of the limiting slider (19) and the second slider (16) are arranged to fit each other; the top of the limiting slider (19) is arranged adjacent to the lower end surface of the third metal contact (67), and the contact of the fifth metal contact (69) is arranged directly below the third metal contact (67), and when the limiting slider (19) moves downward, the contact points on the fifth metal contact (69) and the third metal contact (67) are arranged to fit each other.

9. The washing machine door lock with door closing induction according to claim 8, characterized in that: A third protrusion (20) is provided on the side surface of the limiting slider (19), and a second inclined surface (21) is provided on the upper end surface of the second slider (16); when the second slider (16) moves leftward, the third protrusion (20) of the limiting slider (19) moves along the second inclined surface (21).

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