Door lock and dishwasher

Abstract

The present invention relates to a door lock and a dishwasher, comprising a locking tongue, a linkage mechanism and a self-locking mechanism. The linkage mechanism includes a first trigger member and a second trigger member that are linked to each other. The first trigger member contacts the locking tongue and is controlled to drive the locking tongue to move back and forth between a locked position and an unlocked position. The self-locking mechanism cooperates with the locking tongue to prevent the locking tongue from moving to the unlocked position when the locking tongue moves to the locked position. The second trigger member is in alignment and cooperation with the self-locking mechanism and is controlled to drive the self-locking mechanism to release the locking of the locking tongue. When the locking tongue is in the locked position and one of the first trigger member and the second trigger member is triggered, the other of the first trigger member and the second trigger member is synchronously linked to jointly release the locking of the locking tongue. During the unlocking process, only by driving the first trigger member or the second trigger member to move, no matter which trigger member is driven, the other trigger member will be linked, so that the locking tongue can move to the unlocked position to complete the unlocking process, improving the convenience of operation.

Description

Technical Field

[0001] The present invention relates to the technical field of locks, and particularly to door locks and dishwashers. Background Art

[0002] Generally, a door lock is provided on the door body of cooking equipment such as dishwashers, steam ovens or ovens. After the lock tongue of the door lock extends into the inner container, the position of the lock tongue is locked. Without the lock tongue retracting from the inner container, relative movement cannot occur between the door body and the inner container, thereby locking the door body on the inner container. When the door needs to be opened, the locking of the lock tongue needs to be released first, and then the lock tongue is retracted from the inner container. After the lock tongue retracts from the inner container, the door body can rotate relative to the inner container to complete the door opening action. This makes the process of opening and closing the door less convenient and the operation complex. Summary of the Invention

[0003] In view of the problem that the process of opening and closing the door is not convenient enough, the present invention provides a door lock and a dishwasher to improve the convenience of operation.

[0004] A door lock includes a lock tongue, a linkage mechanism and a self-locking mechanism. The lock tongue can move back and forth between a locking position and an unlocking position. The linkage mechanism includes a first trigger member and a second trigger member that are linked to each other. The first trigger member contacts the lock tongue and is controlled to drive the lock tongue to move back and forth between the locking position and the unlocking position. The self-locking mechanism cooperates with the lock tongue to prevent the lock tongue from moving in the direction close to the unlocking position when the lock tongue moves to the locking position. The second trigger member is in alignment and cooperation with the self-locking mechanism and is controlled to drive the self-locking mechanism to release the locking of the lock tongue.

[0005] When the lock tongue is in the locking position and one of the first trigger member and the second trigger member is triggered, the other of the first trigger member and the second trigger member is synchronously linked to jointly release the locking of the lock tongue.

[0006] The above solution provides a door lock. Based on the linkage relationship between the first trigger member and the second trigger member, during the unlocking process, only by driving the first trigger member to drive the lock tongue to move from the locking position to the unlocking position, or only by driving the second trigger member to move so that the self-locking mechanism releases the locking of the lock tongue. No matter which trigger member is driven to move, the other trigger member will be linked, so that the lock tongue can move to the unlocking position to complete the unlocking process. During the unlocking process, it is not necessary to divide it into two steps: first release the locking of the lock tongue and then drive the lock tongue to move, but directly drive the first trigger member or the second trigger member to complete the unlocking process in one step, improving the convenience of operation.

[0007] In one of the embodiments, the movement mode of the lock tongue between the locked position and the unlocked position is movement, the first trigger member can move the lock tongue back and forth between the locked position and the unlocked position, the second trigger member is slidably arranged in a first direction relative to the self-locking mechanism, the first trigger member and the second trigger member are arranged at intervals, and the linkage mechanism also includes a transmission member, which connects the first trigger member and the second trigger member, and in the process of the first trigger member moving the lock tongue from the locked position to the unlocked position, the second trigger member is synchronously linked and moves in the first direction until it contacts the self-locking mechanism, triggering the self-locking mechanism to release the lock of the lock tongue.

[0008] In one embodiment, the door lock also includes a middle partition, the first trigger member and the second trigger member are both slidably arranged on the same side of the middle partition, and a guide limit unit is provided on the side of the middle partition facing the first trigger member and the second trigger member, and the transmission member includes a rope, and the rope is wound around the guide limit unit, and the end of the rope is connected to the end of the rope, and the part of the rope connected to the first trigger member is a first section of rope, and the first section of rope is arranged along the direction of movement of the lock tongue, and the part of the rope connected to the second trigger member is a second section of rope, and the second section of rope is arranged along the first direction.

[0009] In one embodiment, the lock tongue is stacked with the middle partition, the lock tongue is located on the side of the middle partition away from the first trigger member and the second trigger member, the position of the lock tongue in contact with the first trigger member is located on one side of the guide limit unit, and the position of the lock tongue that cooperates with the self-locking mechanism to lock is located on the other side of the guide limit unit, the first trigger member and the second trigger member are arranged on both sides of the guide limit unit with relative intervals, the moving direction of the lock tongue is parallel to the first direction, and the moving directions of the first trigger member and the second trigger member are opposite.

[0010] In one embodiment, the door lock further comprises an active hydraulic unit, a driven hydraulic unit and an oil pipe connecting the active hydraulic unit and the driven hydraulic unit, the extension direction of the hydraulic rod of the active hydraulic unit intersects with the moving direction of the lock tongue, the extension direction of the hydraulic rod of the driven hydraulic unit is consistent with the moving direction of the lock tongue when it moves from the unlocking position to the locking position, the hydraulic rod of the driven hydraulic unit is provided with a direction switching unit, and the direction switching unit is located between the first trigger member and the second trigger member;

[0011] When the locking tongue is located at the unlocking position, the direction switching unit switches to cooperate with the first trigger member, so that the first trigger member moves following the hydraulic rod of the driven hydraulic unit;

[0012] When the locking tongue is in the locked position, the direction switching unit switches to cooperate with the second trigger member, so that the second trigger member moves following the hydraulic rod of the driven hydraulic unit.

[0013] In one embodiment, the direction switching unit includes a slider and a guiding slide bar. The slider is connected to the hydraulic rod of the driven hydraulic unit. The slider is provided with a perforation which is arranged along the direction in which the first trigger member and the second trigger member are spaced apart. The guiding slide bar is inserted into the perforation. A first sliding groove is provided on the surface of the first trigger member facing the second trigger member, and a second sliding groove is provided on the surface of the second trigger member facing the first trigger member. The plane where the opening of the first sliding groove is located is the first plane, and the plane where the opening of the second sliding groove is located is the second plane. The length of the guiding slide bar is greater than the distance between the first plane and the second plane, the length of the guiding slide bar is not greater than the distance between the bottom wall of the first sliding groove and the second plane, and the length of the guiding slide bar is not greater than the distance between the bottom wall of the second sliding groove and the first plane;

[0014] When the locking tongue is in the unlocked position, one end of the guiding slide bar extends into the first sliding groove, and the other end of the guiding slide bar exits outside the second sliding groove;

[0015] When the locking tongue is in the locked position, one end of the guiding slide bar extends into the second sliding groove, and the other end of the guiding slide bar exits outside the first sliding groove.

[0016] In one embodiment, the locking tongue is of a plate-like structure, the moving direction of the locking tongue is its length direction, there are two active hydraulic units, the two active hydraulic units are arranged at intervals in the width direction of the locking tongue and are respectively located on both sides of the locking tongue, the telescopic direction of the hydraulic rod of the active hydraulic unit is perpendicular to the plane where the locking tongue is located, the oil pipe is divided into two sections, one section communicates with one of the active hydraulic units and the driven hydraulic unit, and the other section communicates with the other active hydraulic unit and the driven hydraulic unit.

[0017] In one embodiment, the guiding and limiting unit includes two first protrusions and two second protrusions. The two first protrusions are arranged at intervals in sequence along the moving direction of the locking tongue to form a first row of protrusions. The two second protrusions are arranged at intervals in sequence along the first direction to form a second row of protrusions. The first row of protrusions and the second row of protrusions are arranged at intervals. The two first protrusions and the two second protrusions form the four corners of a quadrilateral. The rope is wound around the two first protrusions and the two second protrusions. The first section of the rope is located between the two first protrusions, and the second section of the rope is located between the two second protrusions;

[0018] And / or, a first guiding protrusion is provided at a position on the middle partition facing the first trigger member, a bar-shaped first guiding groove or a first guiding hole is provided at a position on the first trigger member corresponding to the first guiding protrusion, the guiding direction of the first guiding groove or the first guiding hole is the moving direction of the lock tongue, the first guiding protrusion is located in the first guiding groove or the first guiding hole, a second guiding protrusion is provided at a position on the middle partition facing the second trigger member, a bar-shaped second guiding groove or a second guiding hole is provided at a position on the second trigger member corresponding to the second guiding protrusion, the guiding direction of the second guiding groove or the second guiding hole is the first direction, and the second guiding protrusion is located in the second guiding groove or the second guiding hole.

[0019] In one embodiment, the second trigger member can move back and forth in the first direction, the self-locking mechanism includes a first self-locking unit and a second self-locking unit. When the lock tongue is in the locking position, the first self-locking unit cooperates with the lock tongue to prevent the lock tongue from moving in the direction close to the unlocking position. When the lock tongue is in the unlocking position, the second self-locking unit cooperates with the lock tongue to prevent the lock tongue from moving in the direction close to the locking position;

[0020] The door lock further includes a first striker, a second striker and an elastic member connecting the first striker and the second striker. The telescopic direction of the elastic member is the moving direction of the lock tongue. A stop protrusion is provided on the lock tongue, and the stop protrusion is located between the first striker and the second striker. The direction when the lock tongue moves from the unlocking position to the locking position is the second direction. The first striker, the stop protrusion and the second striker are arranged in sequence in the second direction, and the first trigger member moves between the first striker and the second striker;

[0021] When the lock tongue is in the unlocking position, the second trigger member can move to contact the second self-locking unit and trigger the second self-locking unit to release the locking of the lock tongue, and the distance that the second trigger member needs to move is L1. The stop protrusion abuts against the first striker, and the distance between the second striker and the first trigger member in the second direction is H1, and H1 is less than L1;

[0022] When the lock tongue is in the locking position, the second trigger member can move to contact the first self-locking unit and trigger the first self-locking unit to release the locking of the lock tongue, and the distance that the second trigger member needs to move is L2. The stop protrusion abuts against the second striker, and the distance between the first striker and the first trigger member in the second direction is H2, and H2 is less than L2.

[0023] In one embodiment, the door lock further includes an outer frame and an outer cover. The intermediate partition, the lock tongue, the self-locking mechanism, the linkage mechanism, the first striker and the second striker are all disposed in the outer frame. The outer cover is disposed on the outer frame. The linkage mechanism is located between the intermediate partition and the outer cover. The lock tongue is stacked on one side of the intermediate partition facing away from the outer cover. The first striker and the second striker are located between the lock tongue and the outer cover. A limiting strip is provided on the inner side of the outer frame. The elastic member is located between the limiting strip and the intermediate partition. The intermediate partition is provided with a first guiding notch and a second guiding notch. The first striker moves in the first guiding notch, and the second striker moves in the second guiding notch.

[0024] In one embodiment, the length direction of the limiting strip is parallel to the moving direction of the lock tongue. One of the two opposite sides of the lock tongue abuts against the limiting strip, and the other side abuts against the outer frame. The outer frame is provided with an extending hole for the lock tongue to extend out. The surface of the limiting strip facing the elastic member is provided with a limiting groove, and the elastic member is located in the limiting groove.

[0025] In one embodiment, the self-locking mechanism includes a movable buckle A. The lock tongue is provided with a clamping groove. When the lock tongue moves to the locking position, the movable buckle A is clamped in the clamping groove and prevents the lock tongue from moving in the direction close to the unlocking position.

[0026] During the process that the first trigger member drives the lock tongue to move from the locking position in the direction close to the unlocking position, the second trigger member is synchronously linked to squeeze the movable buckle A out of the clamping groove.

[0027] In one embodiment, during the linkage process, the movement mode of the second trigger member is translation. The movable buckle A can rotate relative to the clamping groove along a first rotation direction and be clamped in the clamping groove. During the process that the first trigger member drives the lock tongue to move from the locking position in the direction close to the unlocking position, the second trigger member translates and pushes the movable buckle A to rotate in the opposite direction of the first rotation direction and withdraw from the clamping groove.

[0028] Alternatively, the movable buckle A can extend into the clamping groove along a first moving direction to prevent the lock tongue from moving in the direction close to the unlocking position. During the process that the first trigger member drives the lock tongue to move from the locking position in the direction close to the unlocking position, the second trigger member translates and pushes the movable buckle A to move in the opposite direction of the first moving direction and withdraw from the clamping groove.

[0029] A dishwasher, comprising a door body and an inner container, wherein one of the door body and the inner container is provided with the above-mentioned door lock, and the other is provided with a lock hole for inserting the lock tongue.

[0030] The above solution provides a dishwasher. By adopting the door lock described in any of the above embodiments, the door opening process can be completed in only one step during the door opening process, improving the convenience of operation.

[0031] In one embodiment, the door lock is arranged on the door body, the lock hole is arranged on the inner container, and a collision block is arranged on the inner container. When the door body is closed on the inner container, the collision block is arranged opposite to the door lock. When the door body moves in the closing direction, the door lock can hit the collision block to make the first trigger member move. When the lock tongue is located in the lock hole, the lock tongue and the side wall of the lock hole are spaced apart in the direction of the impact between the door lock and the collision block.

[0032] And / or, the moving direction of the lock tongue in the door lock is longitudinal. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0035] Figures 1 to 3 Structural schematic diagrams of the door lock in different states in this embodiment;

[0036] Figure 4 Exploded view of the door lock in this embodiment;

[0037] Figure 5 And Figure 6 Structural schematic diagrams of the lock tongue in the door lock in different states in this embodiment;

[0038] Figure 7 Structural schematic diagram of the dishwasher in this embodiment;

[0039] Figure 8 For Figure 7 Structural schematic diagram of the dishwasher shown when the door body is in the open state.

[0040] Description of the reference numerals:

[0041] 10. Door lock; 11. Lock tongue; 111. Stop projection; 112. Card slot; 12. Linkage mechanism; 121. First trigger member; 1211. First guiding hole; 1212. First sliding groove; 122. Second trigger member; 1221. Second guiding hole; 1222. Second sliding groove; 123. Transmission member; 13. Self-locking mechanism; 131. Movable buckle A; 132. Movable buckle B; 14. Outer frame; 141. Limiting strip; 1411. Limiting groove; 142. First impact block; 143. Second impact block; 144. Elastic member; 15. Active hydraulic unit; 16. Driven hydraulic unit; 161. Oil pipe; 17. Direction switching unit; 171. Slide block; 172. Guiding slide bar; 18. Intermediate partition; 181. First guiding projection; 182. Second guiding projection; 183. First guiding notch; 184. Second guiding notch; 185. First projection; 186. Second projection; 19. Outer cover; 20. Dishwasher; 21. Door body; 22. Inner container; 221. Lock hole; 222. Collision block. Detailed implementation manners

[0042] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following will describe the detailed implementation manners of the present invention with reference to the accompanying drawings. Many specific details are set forth in the following description to facilitate a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0043] As Figures 1 to 4 shown, in one embodiment, a door lock 10 is provided, which includes a lock tongue 11, a linkage mechanism 12, and a self-locking mechanism 13. The lock tongue 11 can move back and forth between a locked position and an unlocked position.

[0044] The linkage mechanism 12 includes a first trigger member 121 and a second trigger member 122 that are linked to each other. When the first trigger member 121 moves, the second trigger member 122 will follow and make a corresponding movement process; when the second trigger member 122 moves, the first trigger member 121 will also follow and make a corresponding movement.

[0045] Specifically, the first trigger member 121 contacts the lock tongue 11 and is controlled to drive the lock tongue 11 to move back and forth between a locked position and an unlocked position. The contact between the first trigger member 121 and the lock tongue 11 can be direct contact or indirect contact. The so-called direct contact means that there is a connection method with direct contact between the first trigger member 121 and the lock tongue 11, such as concave-convex cooperation and limitation or bonding. The indirect contact means that an intermediate element is provided between the first trigger member 121 and the lock tongue 11, and the first trigger member 121 indirectly drives the lock tongue 11 to move through the intermediate element.

[0046] The self-locking mechanism 13 cooperates with the lock tongue 11 and is used to prevent the lock tongue 11 from moving in the direction close to the unlocked position when the lock tongue 11 moves to the locked position. Thus, when the self-locking mechanism 13 does not release the locking of the lock tongue 11, the lock tongue 11 cannot move following the first trigger member 121.

[0047] The second trigger member 122 is in alignment and cooperation with the self-locking mechanism 13 and is controlled to drive the self-locking mechanism 13 to release the locking of the lock tongue 11.

[0048] When the lock tongue 11 is in the locked position and one of the first trigger member 121 and the second trigger member 122 is triggered, the other of the first trigger member 121 and the second trigger member 122 is synchronously linked to jointly release the locking of the lock tongue 11.

[0049] Furthermore, during the unlocking process, only by driving the first trigger member 121 to drive the lock tongue 11 to move from the locked position to the unlocked position, or only by driving the second trigger member 122 to move so that the self-locking mechanism 13 releases the locking of the lock tongue 11, no matter which trigger member is driven to move, the other trigger member will be linked, so that the lock tongue 11 can move to the unlocked position to complete the unlocking process. During the unlocking process, it is not necessary to divide it into two steps: first release the locking of the lock tongue 11 and then drive the lock tongue 11 to move. Instead, directly drive the first trigger member 121 or the second trigger member to complete the unlocking process in one step, improving the convenience of operation.

[0050] Specifically, the movement mode of the lock tongue 11 between the locked position and the unlocked position can be movement or rotation, etc. Correspondingly, the movement mode of the first trigger member 121 can also be movement or rotation.

[0051] During the linkage process, the movement mode of the second trigger member 122 can also be movement or rotation.

[0052] The linkage relationship between the first trigger member 121 and the second trigger member 122 can be achieved by means of a transmission member 123 disposed therebetween. For example, the transmission member 123 can be formed by using one or a combination of various transmission modes such as a gear rack transmission mechanism, a worm gear transmission mechanism, a belt transmission mechanism or a rope connection.

[0053] Furthermore, if Figures 1 to 6 As shown, the self-locking mechanism 13 includes an active buckle A131, and the lock tongue 11 is provided with a slot 112. When the lock tongue 11 moves to the locking position, as shown in FIG. Figure 6 As shown, the movable buckle A131 is clamped in the clamping slot 112 and prevents the locking tongue 11 from moving toward the unlocking position;

[0054] When the first trigger member 121 moves with the locking tongue 11 from the locking position toward the unlocking position, the second trigger member 122 synchronizes with the first trigger member 121 to push the active buckle A131 out of the slot 112 .

[0055] When the lock tongue 11 moves to the point where the slot 112 is opposite to the active buckle A131, the active buckle A131 is inserted into the slot 112, so that the lock tongue 11 cannot move toward the unlocked position. When the second trigger 122 squeezes the active buckle A131 out of the slot 112, the lock tongue 11 moves from the locked position to the unlocked position. During this process, even if the second trigger 122 is disengaged from the active buckle A131, the active buckle A131 is not opposite to the slot 112, so that the active buckle A131 cannot cooperate with the lock tongue 11 to restrict the movement of the lock tongue 11.

[0056] Of course, further, when the lock tongue 11 moves to the unlocking position, if it is necessary to keep the lock tongue 11 stable in the unlocking position, such as Figure 5As shown, an active buckle B132 similar to the above-mentioned active buckle A131 can also be provided, so that the active buckle B132 corresponds to the card slot 112 on the locking tongue 11 in the unlocking position, thereby using the cooperation between the active buckle B132 and the card slot 112 to limit the locking tongue 11 and prevent the locking tongue 11 from moving in the direction close to the locking position. Similarly, when the locking tongue 11 is in the unlocking position, if it is necessary to drive the locking tongue 11 to the locking position, the locking relationship between the active buckle B132 and the card slot 112 at this time needs to be released. The second trigger 122 can be set to drive the second trigger 122 to move in a specific direction when the locking tongue 11 is in the unlocking position. The second trigger 122 can still move to contact the active buckle B132 and push the active buckle B132 out of the card slot 112. When the second trigger 122 moves to trigger the active buckle B132 to release the locking of the locking tongue 11, the first trigger 121 is linked to provide a force for the locking tongue 11 to move from the unlocking position to the locking position.

[0057] Specifically, in one embodiment, as Figure 5 and Figure 6 shown, the direction in which the second trigger 122 needs to move for the active buckle A131 to release the locking with the card slot 112 is the first direction, and the direction in which the second trigger 122 needs to move for the active buckle B132 to release the locking with the card slot 112 is the third direction, and the first direction is opposite to the third direction.

[0058] Further specifically, in one embodiment, as Figures 1 to 3 shown, the movement mode of the second trigger 122 when synchronously linked with the first trigger 121 is to move. As Figure 2 and Figure 3 shown, the active buckle A131 can rotate relative to the card slot 112 along a first rotation direction and be clamped in the card slot 112. During the process of the first trigger 121 driving the locking tongue 11 to move from the locking position in the direction close to the unlocking position, the second trigger 122 moves and pushes the active buckle A131 to rotate in the opposite direction of the first rotation direction and exit the card slot 112.

[0059] The active buckle A131 includes a clamping block and a torsion spring. The force applied by the torsion spring to the clamping block makes the clamping block always have a tendency to rotate into the card slot 112 along the first rotation direction, and when the second trigger 122 moves, it pushes the clamping block to overcome the elastic force of the torsion spring and finally exits the card slot 112. Specifically, in some embodiments, the moving direction of the second trigger 122 is tangent to the first rotation direction.

[0060] Optionally, in another embodiment, the movable buckle A131 can extend into the card slot 112 along the first moving direction to prevent the locking tongue 11 from moving towards the unlocking position. When the first trigger member 121 drives the locking tongue 11 to move from the locking position towards the unlocking position, the second trigger member 122 moves and pushes the movable buckle A131 to move in the opposite direction of the first moving direction and withdraw from the card slot 112.

[0061] At this time, the moving direction of the second trigger member 122 is parallel to the direction in which the movable buckle A131 extends into the card slot 112. The specific moving direction of the second trigger member 122 can be adjusted by the transmission member 123.

[0062] Further specifically, in one embodiment, as Figures 1 to 3 shown, the movement mode of the locking tongue 11 between the locking position and the unlocking position is moving, and the first trigger member 121 can drive the locking tongue 11 to move back and forth between the locking position and the unlocking position. The second trigger member 122 is slidably arranged relative to the self-locking mechanism 13 in the first direction. The first trigger member 121 and the second trigger member 122 are arranged at intervals. The linkage mechanism 12 further includes a transmission member 123, and the transmission member 123 connects the first trigger member 121 and the second trigger member 122. During the process that the first trigger member 121 drives the locking tongue 11 to move from the locking position to the unlocking position, the second trigger member 122 is synchronously linked to move in the first direction to contact the self-locking mechanism 13, triggering the self-locking mechanism 13 to release the lock on the locking tongue 11.

[0063] Specifically, in one embodiment, as Figure 4 shown, the door lock 10 further includes an intermediate partition 18, and both the first trigger member 121 and the second trigger member 122 are slidably arranged on the same side of the intermediate partition 18. A guiding and limiting unit is provided on one side of the intermediate partition 18 facing the first trigger member 121 and the second trigger member 122. The transmission member 123 includes a rope, the rope is wound on the guiding and limiting unit, and the head and tail of the rope are connected. The part of the rope connected to the first trigger member 121 is the first section of rope, the first section of rope is arranged along the moving direction of the locking tongue 11, and the part of the rope connected to the second trigger member 122 is the second section of rope, the second section of rope is arranged along the first direction.

[0064] Under the pulling action of the rope, the first trigger member 121 and the second trigger member 122 move synchronously. The process of the first trigger member 121 moving the lock tongue 11 from the locking position to the unlocking position is synchronized with the process of the second trigger member 122 moving along the first direction.

[0065] Specifically, the guiding and limiting unit can be a complete block structure. Or in another embodiment, as Figures 1 to 3 shown, the guiding and limiting unit includes two first protrusions 185 and two second protrusions 186. The two first protrusions 185 are arranged at intervals in sequence along the moving direction of the lock tongue 11 to form a first row of protrusions. The two second protrusions 186 are arranged at intervals in sequence along the first direction to form a second row of protrusions. The first row of protrusions and the second row of protrusions are arranged at intervals, and the two first protrusions 185 and the two second protrusions 186 form the four corners of a quadrilateral. The rope is wound around the two first protrusions 185 and the two second protrusions 186. The first section of the rope is located between the two first protrusions 185, and the second section of the rope is located between the two second protrusions 186.

[0066] The first trigger member 121 moves between the two first protrusions 185, and the second trigger member 122 moves between the two second protrusions 186. Moreover, the directions in which the first trigger member 121 and the second trigger member 122 can move are both bidirectional. For example, as described above, when it is required that the second trigger member 122 can trigger both the movable buckle A131 and the movable buckle B132, the moving process of the second trigger member 122 along the first direction can be utilized. When the second trigger member 122 moves along the first direction to a certain position, it contacts the movable buckle A131, causing the movable buckle A131 to disengage from the card slot 112; when the second trigger member 122 moves to a moving position along the third direction, it contacts the movable buckle B132, causing the movable buckle B132 to disengage from the card slot 112. The first direction is opposite to the third direction.

[0067] Furthermore, as Figure 1 and Figure 3As shown, in one embodiment, the bolt 11 and the intermediate partition 18 are arranged in a stacked manner, and the bolt 11 is located on one side of the intermediate partition 18 away from the first trigger member 121 and the second trigger member 122. The position on the bolt 11 in contact with the first trigger member 121 is located on one side of the guiding and limiting unit, and the position on the bolt 11 that cooperates with the self-locking mechanism 13 for locking is located on the other side of the guiding and limiting unit. The first trigger member 121 and the second trigger member 122 are arranged at intervals relatively on both sides of the guiding and limiting unit. The moving direction of the bolt 11 is parallel to the first direction, and the moving directions of the first trigger member 121 and the second trigger member 122 are opposite.

[0068] As Figures 1 to 3 shown, when the first trigger member 121 moves upward, the second trigger member 122 moves downward; when the second trigger member 122 moves upward, the first trigger member 121 moves downward.

[0069] Further, in one embodiment, as Figures 1 to 4 shown, the door lock 10 further includes an active hydraulic unit 15, a driven hydraulic unit 16, and an oil pipe 161 connecting the active hydraulic unit 15 and the driven hydraulic unit 16. The telescopic direction of the hydraulic rod of the active hydraulic unit 15 intersects with the moving direction of the bolt 11. The extending direction of the hydraulic rod of the driven hydraulic unit 16 is consistent with the moving direction of the bolt 11 when it moves from the unlocking position to the locking position. The hydraulic rod of the driven hydraulic unit 16 is provided with a direction switching unit 17, and the direction switching unit 17 is located between the first trigger member 121 and the second trigger member 122;

[0070] When the bolt 11 is in the unlocking position, the direction switching unit 17 switches to cooperate with the first trigger member 121, so that the first trigger member 121 moves following the hydraulic rod of the driven hydraulic unit 16;

[0071] When the bolt 11 is in the locking position, the direction switching unit 17 switches to cooperate with the second trigger member 122, so that the second trigger member 122 moves following the hydraulic rod of the driven hydraulic unit 16.

[0072] When the door lock 10 is set on the door body 21 or the inner liner 22, in order to enable the door body 21 to be locked on the inner liner 22, the extension direction of the lock tongue 11 needs to at least intersect with the direction of movement of the door body 21 relative to the inner liner 22, preferably perpendicular. Based on this, the active hydraulic unit 15 and the driven hydraulic unit 16 are set in the above embodiment. In the process of opening and closing the door, the user can push or pull the door body 21 relative to the inner liner 22, and in this process, the hydraulic rod of the active hydraulic unit 15 is squeezed, and then the hydraulic oil in the active hydraulic unit 15 is squeezed out of the active hydraulic unit 15, and flows from the oil pipe 161 into the driven hydraulic unit 16, so that the hydraulic rod of the driven hydraulic unit 16 is extended.

[0073] Furthermore, the hydraulic rod of the driven hydraulic unit 16 can move with different triggering members at different positions by means of the direction switching unit 17. Since the first triggering member 121 and the second triggering member 122 move in opposite directions, the first triggering member 121 and the second triggering member 122 can both move in two directions.

[0074] Specifically, when the lock tongue 11 is in the unlocked position, the hydraulic rod of the driven hydraulic unit 16 extends to push the first trigger member 121 upward, and the second trigger member 122 moves downward in conjunction, and the second trigger member 122 contacts the active buckle B132 when it moves downward to a certain position. Figure 1 As shown, the movable buckle B132 is disengaged from the locking slot 112, and the locking tongue 11 can be extended and moved to the locking position.

[0075] When the locking tongue 11 is in the locking position, Figure 3 As shown, the hydraulic rod of the driven hydraulic unit 16 extends out to push the second trigger member 122 upward to contact the active buckle A131, thereby releasing the lock between the active buckle A131 and the slot 112, and the first trigger member 121 moves the lock tongue 11 downward to the unlocked position.

[0076] When closing the door, when the hydraulic rod of the active hydraulic unit 15 is squeezed so that the hydraulic rod of the driven hydraulic unit 16 extends. After the external thrust is withdrawn, the hydraulic oil squeezed into the driven hydraulic unit 16 returns to the active hydraulic unit 15 along the oil pipe 161. During this process, the hydraulic rod of the driven hydraulic unit 16 automatically resets and retracts, and the direction switching unit 17 moves down accordingly. When the door body 21 is in the closed state and the door is pushed again to squeeze the hydraulic rod of the active hydraulic unit 15, the hydraulic rod of the driven hydraulic unit 16 can extend again. And so on, every time when opening or closing the door, as long as the door body 21 is pushed so that the hydraulic rod of the active hydraulic unit 15 is squeezed, the unlocking or locking process can be completed. Moreover, during the process of opening and closing the door, directly utilize the flow of the hydraulic oil in the active hydraulic unit 15 and the driven hydraulic unit 16, without the need to rely on electrical components such as motors, eliminating the dependence on electric energy during the process of opening and closing the door. Even in the case of power failure, the process of opening and closing the door can still be carried out normally.

[0077] Further specifically, in one embodiment, as Figures 1 to 4 shown, the direction switching unit 17 includes a slider 171 and a guiding slide bar 172. The slider 171 is connected to the hydraulic rod of the driven hydraulic unit 16. The slider 171 is provided with a perforation, and the perforation is arranged along the direction in which the first trigger member 121 and the second trigger member 122 are spaced apart. The guiding slide bar 172 is inserted into the perforation. The surface of the first trigger member 121 facing the second trigger member 122 is provided with a first chute 1212, and the surface of the second trigger member 122 facing the first trigger member 121 is provided with a second chute 1222. The plane where the opening of the first chute 1212 is located is the first plane, and the plane where the opening of the second chute 1222 is located is the second plane. The length of the guiding slide bar 172 is greater than the distance between the first plane and the second plane, the length of the guiding slide bar 172 is not greater than the distance between the bottom wall of the first chute 1212 and the second plane, and the length of the guiding slide bar 172 is not greater than the distance between the bottom wall of the second chute 1222 and the first plane.

[0078] Thus, when the guiding slide bar 172 contacts the part of the first trigger member 121 that is flush with the first plane or closer to the second trigger member 122 relative to the first plane, the guiding slide bar 172 can be pushed by the first trigger member 121 and extend into the second chute 1222. In this case, if the hydraulic rod of the driven hydraulic unit 16 extends, the guiding slide bar 172 will abut against the side wall of the second chute 1222 and push the second trigger member 122.

[0079] Similarly, when the guide slide bar 172 contacts a portion of the second trigger member 122 that is flush with the second plane or closer to the first trigger member 121 relative to the second plane, the guide slide bar 172 can be pushed by the second trigger member 122 to extend into the first slide groove 1212. In this case, if the hydraulic rod of the driven hydraulic unit 16 is extended, the guide slide bar 172 will abut against the side wall of the first slide groove 1212, thereby pushing the first trigger member 121.

[0080] Furthermore, if Figure 1 As shown, when the locking tongue 11 is located in the unlocking position, one end of the guide slide rod 172 extends into the first slide groove 1212, and the other end of the guide slide rod 172 withdraws from the second slide groove 1222; at this time, when the guide slide rod 172 moves up with the hydraulic rod of the driven hydraulic unit 16, it will move up with the first trigger member 121, and the second trigger member 121 will move down in conjunction.

[0081] When the force of pushing the door body 21 is removed, the hydraulic rod of the driven hydraulic unit 16 moves downward, and the guide slide bar 172 moves downward. When the guide slide bar 172 moves downward a certain distance and contacts with the first trigger member 121, the first trigger member 121 pushes the guide slide bar 172 into the second slide groove 1222 to prepare for the next door opening.

[0082] like Figure 3 When the locking tongue 11 is in the locking position, one end of the guide slide bar 172 extends into the second slide slot 1222, and the other end of the guide slide bar 172 exits the first slide slot 1212. At this time, when the guide slide bar 172 moves upward with the hydraulic rod of the driven hydraulic unit 16, the second trigger member 122 moves upward, and the first trigger member 121 moves downward in conjunction.

[0083] When the force of the door pusher 21 is removed, the hydraulic rod of the driven hydraulic unit 16 moves downward, and the guide slide bar 172 moves downward. When the guide slide bar 172 moves downward for a certain distance and contacts the second trigger member 122, as shown in FIG. Figure 2 As shown, the second trigger member 122 pushes the guide slide bar 172 into the first slide groove 1212 to prepare for the next door closing.

[0084] In order to ensure that the guide slide rod 172 can be smoothly pushed into the corresponding slide groove by the first trigger member 121 or the second trigger member 122 when the guide slide rod 172 moves downward and resets, as shown in FIG. Figures 1 to 3As shown, inclined guiding slopes are provided at the corners of the bottom surface and the end surface at both ends of the guiding sliding rod. Further, the lower side wall among the two side walls of the first sliding groove 1212 is an inclined surface, and gradually slopes downward in the direction away from its bottom wall. The lower side wall among the two side walls of the second sliding groove 1222 is an inclined surface, and gradually slopes downward in the direction away from its bottom wall.

[0085] It should be noted that Figure 1 As shown, it is the state of the door lock 10 when the guiding sliding rod 172 pushes the first triggering member 121 upward until the locking tongue 11 has been unlocked and the locking tongue 11 is about to extend. Figure 3 As shown, it is the state of the door lock 10 when the guiding sliding rod 172 pushes the second triggering member 122 upward until the locking tongue 11 has been unlocked and the locking tongue 11 is about to retract. Figure 2 As shown, on the Figure 3 basis, when the guiding sliding rod 172 automatically resets along with the hydraulic rod of the driven hydraulic unit 16, it is the state of the door lock 10. The guiding sliding rod 172 has been pushed into the first sliding groove 1212 by the second triggering member 122.

[0086] Further specifically, in one embodiment, as Figures 1 to 6 shown, the locking tongue 11 is of a plate-like structure, the moving direction of the locking tongue 11 is its length direction, there are two active hydraulic units 15, and the two active hydraulic units 15 are arranged at intervals in the width direction of the locking tongue 11 and are respectively located on both sides of the locking tongue 11. The telescopic direction of the hydraulic rod of the active hydraulic unit 15 is perpendicular to the plane where the locking tongue 11 is located. The oil pipe 161 is divided into two sections, one section connecting one of the active hydraulic units 15 and the driven hydraulic unit 16, and the other section connecting the other active hydraulic unit 15 and the driven hydraulic unit 16.

[0087] Thus, when the user pushes the door body 21, the hydraulic rods of the two active hydraulic units 15 can both be squeezed, improving the sensitivity of opening and closing the door.

[0088] Further, to make the moving process of the first triggering member 121 and the second triggering member 122 smoother, as Figures 1 to 4As shown, a first guiding protrusion 181 is provided at a position on the upper surface of the intermediate partition plate 18 facing the first trigger member 121. A strip-shaped first guiding groove or first guiding hole 1211 is provided at a position on the first trigger member 121 corresponding to the first guiding protrusion 181. The guiding direction of the first guiding groove or the first guiding hole 1211 is the moving direction of the lock tongue 11, and the first guiding protrusion 181 is located in the first guiding groove or the first guiding hole 1211. A second guiding protrusion 182 is provided at a position on the upper surface of the intermediate partition plate 18 facing the second trigger member 122. A strip-shaped second guiding groove or second guiding hole 1221 is provided at a position on the second trigger member 122 corresponding to the second guiding protrusion 182. The guiding direction of the second guiding groove or the second guiding hole 1221 is the first direction, and the second guiding protrusion 182 is located in the second guiding groove or the second guiding hole 1221.

[0089] Further, in one embodiment, as Figure 5 and Figure 6 shown, the second trigger member 122 can move back and forth in the first direction. The self-locking mechanism 13 includes a first self-locking unit and a second self-locking unit. When the lock tongue 11 is in the locked position, the first self-locking unit cooperates with the lock tongue 11 to prevent the lock tongue 11 from moving in the direction close to the unlocking position. When the lock tongue 11 is in the unlocking position, the second self-locking unit cooperates with the lock tongue 11 to prevent the lock tongue 11 from moving in the direction close to the locked position.

[0090] Specifically, the first self-locking unit can be the movable buckle A131 described above; the second self-locking unit can be the movable buckle B132 described above.

[0091] As Figure 5 and Figure 6 shown, the door lock 10 further includes a first striker 142, a second striker 143, and an elastic member 144 connecting the first striker 142 and the second striker 143. The telescopic direction of the elastic member 144 is the moving direction of the lock tongue 11. A stop protrusion 111 is provided on the lock tongue 11, and the stop protrusion 111 is located between the first striker 142 and the second striker 143. The direction of the lock tongue 11 moving from the unlocking position to the locking position is the second direction, and the first striker 142, the stop protrusion 111, and the second striker 143 are arranged in sequence in the second direction. As Figures 1 to 3 shown, the first trigger member 121 moves between the first striker 142 and the second striker 143.

[0092] When the latch 11 is in the unlocking position, initially the second self-locking unit cooperates with the latch 11 to prevent the latch 11 from moving in the direction close to the locking position. At this time, the stop projection 111 abuts against the first striker 142, and the distance between the second striker 143 and the first trigger member 121 in the second direction is H1. And the second trigger member 122 can move to contact the second self-locking unit and trigger the second self-locking unit to release the locking of the latch 11. And the distance that the second trigger member 122 needs to move is L1, and H1 is less than L1.

[0093] At this time, if locking is required, the second trigger member 122 needs to move to release the locking between the second self-locking unit and the latch 11, and the first trigger member 121 is linked during this process. And based on H1 being less than L1, so during the movement of the first trigger member 121 and the second trigger member 122, as Figure 1 shown, the first trigger member 121 first contacts the second striker 143 and pushes the second striker 143 to continue moving in the direction away from the first striker 142, and the elastic member 144 is stretched. Until the moving distance of the second trigger member 122 reaches L1, the latch 11 is unlocked, and under the action of the elastic member 144 and the first striker 142, the latch 11 extends and moves to the locking position.

[0094] When the latch 11 is in the locking position, initially the first self-locking unit locks the latch 11 to prevent the latch 11 from moving in the direction close to the unlocking position. At this time, the stop projection 111 abuts against the second striker 143, and the distance between the first striker 142 and the first trigger member 121 in the second direction is H2. And the second trigger member 122 can move to contact the first self-locking unit and trigger the first self-locking unit to release the locking of the latch 11, and the distance that the second trigger member 122 needs to move is L2, and H2 is less than L2.

[0095] At this time, if unlocking is required, the second trigger member 122 needs to move a distance of L2. During this process, the first trigger member 121 is linked, and when the first trigger member 121 moves a distance of H2, the first trigger member 121 contacts the first striker 142, based on H2 being less than L2. After the first trigger member 121 contacts the first striker 142 and continues to move, it pushes the first striker 142 in the direction away from the second striker 143, and the elastic member 144 is stretched. Until the moving distance of the second trigger member 122 reaches L2, the first self-locking unit releases the locking of the latch 11, and under the action of the elastic member 144 and the second striker 143, the latch 11 retracts and moves to the unlocking position.

[0096] The above-mentioned first trigger 121 and the second trigger 122 can be driven by the guiding slide bar 172 described in the foregoing text.

[0097] Further, in one embodiment, as Figure 4 shown, the door lock 10 further includes an outer frame 14 and an outer cover 19. The intermediate partition 18, the locking tongue 11, the self-locking mechanism 13, the linkage mechanism 12, the first striker 142, and the second striker 143 are all disposed in the outer frame 14. The outer cover 19 is disposed on the outer frame 14, and the linkage mechanism 12 is located between the intermediate partition 18 and the outer cover 19. The locking tongue 11 is stacked on one side of the intermediate partition 18 away from the outer cover 19, and the first striker 142 and the second striker 143 are located between the locking tongue 11 and the outer cover 19. A limiting strip 141 is provided on the inner side of the outer frame 14, and the elastic member 144 is located between the limiting strip 141 and the intermediate partition 18. The limiting strip 141 and the intermediate partition 18 sandwich the elastic member 144 therebetween. The intermediate partition 18 is provided with a first guiding notch 183 and a second guiding notch 184. The first striker 142 moves in the first guiding notch 183, and the second striker 143 moves in the second guiding notch 184.

[0098] The first guiding notch 183 and the second guiding notch 184 respectively play a role of limiting and guiding for the first striker 142 and the second striker 143. When the self-locking mechanism 13 includes the movable buckle A131 and the movable buckle B132, the latches of the movable buckle A131 and the movable buckle B132 are hinged to the outer frame 14, and the torsion spring provides an elastic force for the corresponding movable buckle.

[0099] Further, in one embodiment, the length direction of the limiting strip 141 is parallel to the moving direction of the locking tongue 11. One side of the two opposite sides of the locking tongue 11 abuts against the limiting strip 141, and the other side abuts against the outer frame 14. The outer frame 14 is provided with an extending hole for the locking tongue 11 to extend out. When the locking tongue 11 moves, the limiting strip 141 and the outer frame 14 guide it, so that the movement of the locking tongue 11 is more stable. The surface of the limiting strip 141 facing the elastic member 144 is provided with a limiting groove 1411, and the elastic member 144 is located in the limiting groove 1411. The positions of the first striker 142 and the second striker 143 facing the limiting groove 1411 can also protrude into the limiting groove 1411, so that the limiting groove 1411 can also guide the first striker 142 and the second striker 143 during the sliding process.

[0100] Further, in another embodiment, as Figure 7 and Figure 8 shown, a dishwasher 20 is provided, including a door body 21 and an inner container 22. Among the door body 21 and the inner container 22, one of them is provided with the door lock 10 described in any one of the above, and the other is provided with a lock hole 221 for the lock tongue 11 to insert.

[0101] The above solution provides a dishwasher 20. By adopting the door lock 10 described in any one of the above embodiments, the door opening process can be completed in only one step during the door opening process, improving the convenience of operation.

[0102] Specifically, in one embodiment, as Figure 7 shown, the door lock 10 is arranged on the door body 21. As Figure 8 shown, the lock hole 221 is provided on the inner container 22. A collision block 222 is provided on the inner container 22. When the door body 21 is closed on the inner container 22, the collision block 222 is arranged opposite to the door lock 10. When the door body 21 moves in the closing direction, the door lock 10 can hit the collision block 222 to make the first trigger member 121 move.

[0103] Specifically, in one embodiment, the collision block 222 is opposite to the hydraulic rod of the active hydraulic unit 15. When the door body 21 moves in the closing direction, the collision block 222 pushes the hydraulic rod of the active hydraulic unit 15 into the hydraulic cylinder of the active hydraulic unit 15.

[0104] Further, when the lock tongue 11 is located in the lock hole 221, the lock tongue 11 is spaced from the side wall of the lock hole 221 in the direction of the impact between the door lock 10 and the collision block 222. Thus, during the process of opening and closing the door, the lock tongue 11 can move a little position in the lock hole 221, so that the hydraulic rod of the active hydraulic unit 15 can hit the collision block 222.

[0105] Further, as Figure 7 shown, the moving direction of the lock tongue 11 in the door lock 10 is longitudinal.

[0106] Thus, when the external force for pushing the door is removed, under the action of gravity, the hydraulic rod of the driven hydraulic unit 16 and the direction switching unit 17 can move downward to reset, preparing for the next door opening and closing process.

[0107] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0108] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0109] In the present invention, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0110] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0111] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0112] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0113] The above-described embodiments merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the invention patent should be subject to the appended claims.

Claims

1. A door lock, characterized in that, The invention comprises a lock tongue, a linkage mechanism and a self-locking mechanism, wherein the lock tongue can move back and forth between a locked position and an unlocked position, the linkage mechanism comprises a first triggering member and a second triggering member which are linked to each other, the first triggering member contacts the lock tongue and is controlled to drive the lock tongue to move back and forth between the locked position and the unlocked position, the self-locking mechanism cooperates with the lock tongue, and is used to prevent the lock tongue from moving in a direction close to the unlocked position when the lock tongue moves to the locked position, and the second triggering member cooperates with the self-locking mechanism in a positional manner and is controlled to drive the self-locking mechanism to release the lock of the lock tongue; When the lock tongue is located at the locking position and one of the first trigger member and the second trigger member is triggered, the first trigger member and the other of the second trigger member are synchronously linked to jointly release the lock of the lock tongue; The movement mode of the lock tongue between the locking position and the unlocking position is movement, the first trigger member can move the lock tongue back and forth between the locking position and the unlocking position, and the second trigger member is slidably arranged in a first direction relative to the self-locking mechanism. The moving direction of the lock tongue is parallel to the first direction, the first trigger member and the second trigger member are arranged at intervals, and the linkage mechanism further includes a transmission member, the transmission member connects the first trigger member and the second trigger member, and in the process that the first trigger member moves the lock tongue from the locked position to the unlocked position, the second trigger member synchronously links and moves in the first direction to contact with the self-locking mechanism, triggering the self-locking mechanism to release the lock of the lock tongue; The door lock also includes a middle partition, the first trigger member and the second trigger member are both slidably arranged on the same side of the middle partition, and a guide limit unit is provided on the side of the middle partition facing the first trigger member and the second trigger member. The transmission member includes a rope, and the rope is wound around the guide limit unit. The end of the rope is connected to the end of the rope. The part of the rope connected to the first trigger member is a first section of rope, and the first section of rope is arranged along the direction of movement of the lock tongue. The part of the rope connected to the second trigger member is a second section of rope, and the second section of rope is arranged along the first direction.

2. The door lock according to claim 1, wherein The lock tongue is stacked with the middle partition, the lock tongue is located on the side of the middle partition away from the first trigger member and the second trigger member, the position of the lock tongue in contact with the first trigger member is located on one side of the guide limiting unit, and the position of the lock tongue that cooperates with the self-locking mechanism to lock is located on the other side of the guide limiting unit, the first trigger member and the second trigger member are arranged on both sides of the guide limiting unit with relative spacing, the moving direction of the lock tongue is parallel to the first direction, and the first trigger member and the second trigger member move in opposite directions.

3. The door lock according to claim 2, characterized in that, The door lock further includes an active hydraulic unit, a driven hydraulic unit, and an oil pipe connecting the active hydraulic unit and the driven hydraulic unit. The telescopic direction of the hydraulic rod of the active hydraulic unit intersects with the moving direction of the lock tongue. The extending direction of the hydraulic rod of the driven hydraulic unit is the same as the moving direction of the lock tongue when the lock tongue moves from the unlocking position to the locking position. The hydraulic rod of the driven hydraulic unit is provided with a direction switching unit, and the direction switching unit is located between the first trigger member and the second trigger member; When the lock tongue is in the unlocking position, the direction switching unit switches to cooperate with the first trigger member, so that the first trigger member moves along with the hydraulic rod of the driven hydraulic unit; When the lock tongue is in the locking position, the direction switching unit switches to cooperate with the second trigger member, so that the second trigger member moves along with the hydraulic rod of the driven hydraulic unit.

4. The door lock according to claim 3, characterized in that The direction switching unit includes a slider and a guiding slide rod. The slider is connected to the hydraulic rod of the driven hydraulic unit. The slider is provided with a perforation, and the perforation is arranged along the direction in which the first trigger member and the second trigger member are spaced apart. The guiding slide rod is inserted into the perforation. The surface of the first trigger member facing the second trigger member is provided with a first chute, and the surface of the second trigger member facing the first trigger member is provided with a second chute. The plane where the opening of the first chute is located is the first plane, and the plane where the opening of the second chute is located is the second plane. The length of the guiding slide rod is greater than the distance between the first plane and the second plane, the length of the guiding slide rod is not greater than the distance between the bottom wall of the first chute and the second plane, and the length of the guiding slide rod is not greater than the distance between the bottom wall of the second chute and the first plane; When the lock tongue is in the unlocking position, one end of the guiding slide rod extends into the first chute, and the other end of the guiding slide rod exits outside the second chute; When the lock tongue is in the locking position, one end of the guiding slide rod extends into the second chute, and the other end of the guiding slide rod exits outside the first chute.

5. The door lock according to claim 3, characterized in that, The lock tongue is of a plate-like structure, and the moving direction of the lock tongue is its length direction. There are two active hydraulic units, and the two active hydraulic units are arranged at intervals in the width direction of the lock tongue and are respectively located on both sides of the lock tongue. The telescopic direction of the hydraulic rod of the active hydraulic unit is perpendicular to the plane where the lock tongue is located. The oil pipe is divided into two sections, one section connecting one of the active hydraulic units and the driven hydraulic unit, and the other section connecting the other active hydraulic unit and the driven hydraulic unit.

6. The door lock according to claim 1, characterized in that, The guiding and limiting unit includes two first protrusions and two second protrusions. The two first protrusions are arranged at intervals in sequence along the moving direction of the lock tongue to form a first row of protrusions. The two second protrusions are arranged at intervals in sequence along the first direction to form a second row of protrusions. The first row of protrusions and the second row of protrusions are arranged at intervals. The two first protrusions and the two second protrusions form the four corners of a quadrilateral. The rope is wound around the two first protrusions and the two second protrusions. The first section of the rope is located between the two first protrusions, and the second section of the rope is located between the two second protrusions; And / or, a first guiding protrusion is provided at a position on the intermediate partition facing the first trigger member. A strip-shaped first guiding groove or a first guiding hole is provided at a position on the first trigger member corresponding to the first guiding protrusion. The guiding direction of the first guiding groove or the first guiding hole is the moving direction of the lock tongue. The first guiding protrusion is located in the first guiding groove or the first guiding hole. A second guiding protrusion is provided at a position on the intermediate partition facing the second trigger member. A strip-shaped second guiding groove or a second guiding hole is provided at a position on the second trigger member corresponding to the second guiding protrusion. The guiding direction of the second guiding groove or the second guiding hole is the first direction. The second guiding protrusion is located in the second guiding groove or the second guiding hole.

7. The door lock according to claim 1, characterized in that, The second trigger member can move back and forth in the first direction. The self-locking mechanism includes a first self-locking unit and a second self-locking unit. When the lock tongue is in the locking position, the first self-locking unit cooperates with the lock tongue to prevent the lock tongue from moving in the direction close to the unlocking position. When the lock tongue is in the unlocking position, the second self-locking unit cooperates with the lock tongue to prevent the lock tongue from moving in the direction close to the locking position; The door lock further includes a first striker, a second striker, and an elastic member connecting the first striker and the second striker. The telescopic direction of the elastic member is the moving direction of the lock tongue. A stop protrusion is provided on the lock tongue. The stop protrusion is located between the first striker and the second striker. The direction when the lock tongue moves from the unlocking position to the locking position is the second direction. The first striker, the stop protrusion, and the second striker are arranged in sequence in the second direction. The first trigger member moves between the first striker and the second striker; When the lock tongue is in the unlocking position, the second trigger member can move to contact the second self-locking unit and trigger the second self-locking unit to release the locking of the lock tongue, and the distance that the second trigger member needs to move is L1. The stop protrusion abuts against the first striker. The distance between the second striker and the first trigger member in the second direction is H1, and H1 is less than L1; When the latch tongue is in the locked position, the second trigger member can move into contact with the first self-locking unit and trigger the first self-locking unit to release the locking of the latch tongue, and the distance that the second trigger member needs to move is L2. The stop protrusion abuts against the second striker, and the distance between the first striker and the first trigger member in the second direction is H2, and H2 is less than L2.

8. The door lock according to claim 7, characterized in that, The door lock further includes an outer frame and an outer cover. The intermediate partition, the latch tongue, the self-locking mechanism, the linkage mechanism, the first striker, and the second striker are all arranged in the outer frame. The outer cover is arranged on the outer frame. The linkage mechanism is located between the intermediate partition and the outer cover. The latch tongue is stacked on one side of the intermediate partition facing away from the outer cover. The first striker and the second striker are located between the latch tongue and the outer cover. A limiting strip is provided on the inner side of the outer frame. The elastic member is located between the limiting strip and the intermediate partition. The intermediate partition is provided with a first guiding notch and a second guiding notch. The first striker moves in the first guiding notch, and the second striker moves in the second guiding notch.

9. The door lock according to claim 8, characterized in that, The length direction of the limiting strip is parallel to the moving direction of the latch tongue. One of the two opposite sides of the latch tongue abuts against the limiting strip, and the other side abuts against the outer frame. The outer frame is provided with an extending hole for the latch tongue to extend out. The surface of the limiting strip facing the elastic member is provided with a limiting groove, and the elastic member is located in the limiting groove.

10. The door lock according to any one of claims 1 to 9, characterized in that, The self-locking mechanism includes a movable buckle A. The latch tongue is provided with a card slot. When the latch tongue moves to the locked position, the movable buckle A is clamped in the card slot and prevents the latch tongue from moving in the direction close to the unlocking position. During the process that the first trigger member drives the latch tongue to move from the locked position in the direction close to the unlocking position, the second trigger member is synchronously linked to squeeze the movable buckle A out of the card slot.

11. The door lock according to claim 10, characterized in that, During the linkage process, the movement mode of the second trigger member is movement. The movable buckle A can rotate relative to the card slot along a first rotation direction and be clamped in the card slot. During the process that the first trigger member drives the latch tongue to move from the locked position in the direction close to the unlocking position, the second trigger member moves and pushes the movable buckle A to rotate in the opposite direction of the first rotation direction and exit the card slot. Alternatively, the movable buckle A can extend into the card slot along a first moving direction to prevent the latch tongue from moving in the direction close to the unlocking position. During the process that the first trigger member drives the latch tongue to move from the locked position in the direction close to the unlocking position, the second trigger member moves and pushes the movable buckle A to move in the opposite direction of the first moving direction and exit the card slot.

12. A dishwasher, characterized in that, It includes a door body and an inner container. Among the door body and the inner container, one of them is provided with the door lock according to any one of claims 1 to 11, and the other is provided with a keyhole for the latch tongue to insert.

13. The dishwasher according to claim 12, characterized in that, The door lock is arranged on the door body, the lock hole is arranged on the inner container, and a collision block is arranged on the inner container. When the door body is closed on the inner container, the collision block is arranged opposite to the door lock. When the door body moves in the closing direction, the door lock can strike the collision block to make the first trigger member move. When the lock tongue is located in the lock hole, the lock tongue and the side wall of the lock hole are arranged at intervals in the direction of the impact between the door lock and the collision block; And / or, the moving direction of the lock tongue in the door lock is longitudinal.

Images