Door lock mechanism and dishwasher using the same

Abstract

The application provides a door lock mechanism and a dishwasher adopting the same. The door lock mechanism comprises an execution mechanism and a trigger mechanism cooperating with the execution mechanism. The execution mechanism comprises a small load mechanism, a large load mechanism, a locking body and a switching device. The trigger mechanism comprises a driving mechanism, a push rod and a latch. The driving mechanism is connected to the push rod and can drive the push rod to move. The front end of the push rod is provided with the latch which cooperates with the locking body. The small load mechanism and the large load mechanism act on the locking body to provide the locking force of the latch. The switching device changes the acting mode of the small load mechanism and the large load mechanism on the locking body to realize the size switching of the locking force of the latch. The small load mechanism and the large load mechanism act on the locking body through the switching device, the opening and closing doors and the locking state have different load forces, the operation feeling is optimized, the fingers and other parts of the operator are prevented from being clamped when the door is automatically closed, the operator is protected, and the safety hazard is eliminated.

Description

[Technical Field]

[0001] This invention relates to door lock mechanisms, and more particularly to door lock mechanisms used in household appliances. [Background Technology]

[0002] Various household appliances, especially dishwashers, require opening and closing the door during use. To facilitate user operation, dishwashers are equipped with an automatic door locking function. For example, CN105220966B proposes an automatic door lock for a dishwasher. The automatic door lock is located on the dishwasher body, and the latch is located on the door. The automatic door lock employs a locking device and a pushing device. The locking device includes a power element, a rotating rod, a first push rod, and a second push rod. When locking, the latch pushes the first push rod through the second push rod, and the rotating rod locks the latch. When unlocking, the first push rod pushes the latch out through the second push rod, and simultaneously, the first push rod acts on the rotating rod to unlock.

[0003] While this automatic door lock enables automatic opening and closing, providing convenience for users, it still has the following problems:

[0004] 1. To achieve a good locking function, the locking force is set to be very large. This means that users need to use a lot of force to open the door cover, which results in a poor door opening experience. Moreover, it is difficult for different users to control the amount of force used, which may result in the door not being able to be opened with too little force or the door cover being damaged with too much force.

[0005] 2. When the door is closed, the push rod automatically closes the door. Due to the large force between the push rod and the door lock device, if a hand happens to be in the side gap of the door cover, the force of pinching is very large, which poses a great safety hazard. In particular, minors operating or playing with the dishwasher are prone to hand pinching accidents, which pose a major safety hazard. [Summary of the Invention]

[0006] The purpose of this invention is to solve the problems in the prior art and provide a door lock mechanism and a dishwasher using the door lock mechanism, which can ensure a sufficiently large locking force to securely lock the door cover, while also reducing the load force during opening and closing, facilitating operation, and eliminating safety hazards such as pinching fingers.

[0007] To achieve the above objectives, the present invention proposes a door lock mechanism, including an actuator and a triggering mechanism that cooperates with the actuator. The actuator includes a low-load mechanism, a high-load mechanism, a locking body, and a switching device. The low-load mechanism and the high-load mechanism are independently arranged. The triggering mechanism includes a drive mechanism, a push rod, and a latch. The drive mechanism is connected to the push rod and can drive the push rod to move. The front end of the push rod is provided with a latch that cooperates with the locking body. The low-load mechanism and the high-load mechanism act on the locking body to provide the locking force of the latch. The switching device achieves the switching of the latch locking force by changing the way the low-load mechanism and the high-load mechanism act on the locking body.

[0008] Preferably, the small load mechanism includes an upper locking plate and an auxiliary spring, and the large load mechanism includes a lower locking plate, a main spring and a spring base. The locking body can exert a force on the upper locking plate to drive the upper locking plate to move. The auxiliary spring is disposed between the upper locking plate and the lower locking plate, and the main spring is disposed between the lower locking plate and the spring base. The switching device can be locked between the upper locking plate and the lower locking plate.

[0009] Preferably, the switching device includes a closing connecting plate, a connecting plate, a stop block, a return spring, and a torsion spring. The closing connecting plate is movable by a latch. The closing connecting plate is connected to a connecting plate, and the connecting plate is connected to the stop block. Moving the closing connecting plate left and right can drive the connecting plate to move up and down. Moving the connecting plate up and down can drive the stop block to move left and right. The return spring abuts against the closing connecting plate to reset the closing connecting plate, and the torsion spring abuts against the stop block to reset the stop block.

[0010] Preferably, the closing connecting plate is provided with a guide post, a lifting guide groove and a first inclined surface, and a second inclined surface and a locking part on the stop block. The guide post is installed in the lifting guide groove, which is a groove with varying height. The first inclined surface and the second inclined surface abut against each other. The locking part can be locked between the upper locking plate and the lower locking plate, so that the locking body loses its force on the auxiliary spring and generates a compressive force on the main spring.

[0011] Preferably, when the auxiliary spring is in its natural state, the distance between the lower end face of the upper locking plate and the upper end face of the lower locking plate is L1, and the height of the locking part is L2, where 0.8*L1<L2<L1.

[0012] Preferably, the system also includes a base and a housing, wherein the housing and the base are fitted together to form a cavity, and the locking body, upper locking plate, lower locking plate, and spring base are all installed in the cavity formed by the base and the housing.

[0013] Preferably, the push rod includes a first push rod and a second push rod. One end of the first push rod is provided with a rack that cooperates with the drive mechanism, and the other end is provided with a pin that cooperates with the door closing connecting plate. The outer end of the second push rod is provided with a latch. The first push rod and the second push rod are installed together.

[0014] Preferably, when the drive mechanism is retracted, a gap is formed between the first push rod and the second push rod. After the drive mechanism drives the first push rod to eliminate the gap, the first push rod and the second push rod move simultaneously. When there is no gap between the first push rod and the second push rod, the end of the pin is outside the latch.

[0015] To achieve the above objectives, the present invention also proposes a dishwasher, including a cabinet and a door cover. A triggering mechanism is installed on the cabinet, and an actuator that cooperates with the triggering mechanism is installed on the door cover. The actuator includes a low-load mechanism, a high-load mechanism, a locking body, and a switching device. The low-load mechanism and the high-load mechanism are independently arranged. The switching device can switch between two states: the low-load mechanism acting on the locking body and the high-load mechanism acting on the locking body. The triggering mechanism includes a driving mechanism, a push rod, and a latch. The driving mechanism is connected to the push rod and can drive the push rod to move. The front end of the push rod is provided with a latch that cooperates with the locking body.

[0016] To achieve the above objectives, the present invention also proposes a novel dishwasher, comprising a cabinet and a door cover. The cabinet is equipped with a triggering mechanism and an actuating mechanism, which are installed in conjunction with the actuating mechanism. The actuating mechanism includes a low-load mechanism, a high-load mechanism, a locking body, and a switching device. The low-load mechanism and the high-load mechanism are independently configured, and the switching device can switch between two states: the low-load mechanism acting on the locking body and the high-load mechanism acting on the locking body. The triggering mechanism includes a driving mechanism and a push rod. The driving mechanism is connected to the push rod and can drive the push rod to move. The door cover is provided with a latch that cooperates with the push rod.

[0017] The beneficial effects of this invention are as follows: This invention uses a switching device to switch between a small-load mechanism and a large-load mechanism acting on the locking body, achieving different load forces in the opening / closing and locking states. In the closing state, the large-load mechanism acts on the locking body, resulting in a large binding force between the locking body and the latch, making it difficult to open the door and achieving secure locking. During the opening process, the small-load mechanism acts on the locking body, resulting in a small binding force between the locking body and the latch. This not only reduces the opening force and optimizes the operating feel, but also reduces the closing force, preventing the operator's fingers or other parts from being pinched during automatic closing, thus providing good protection for the operator and eliminating safety hazards. It also balances locking force with convenient opening and closing operation.

[0018] The features and advantages of the present invention will be described in detail through embodiments and in conjunction with the accompanying drawings. [Attached Image Description]

[0019] Figure 1 This is an exploded view of the door lock mechanism of the present invention;

[0020] Figure 2 This is an exploded view of the switching device in the door lock mechanism of the present invention;

[0021] Figure 3 This is a schematic diagram of the state of the switching device in the door lock mechanism of the present invention;

[0022] Figure 4 This is a schematic diagram of the second state of the switching device in the door lock mechanism of the present invention;

[0023] Figure 5 This is a schematic diagram of the locking body installed in the base and housing of the door lock mechanism of the present invention;

[0024] Figure 6 This is a schematic diagram of the door lock mechanism of the present invention in the initial closed state;

[0025] Figure 7 yes Figure 6 BB cross-sectional view;

[0026] Figure 8 This is a schematic diagram of the door lock mechanism's door closing action flip point state;

[0027] Figure 9 yes Figure 8 BB cross-sectional view;

[0028] Figure 10 This is a schematic diagram of the door lock mechanism of the present invention in the state of completing the door closing action;

[0029] Figure 11 yes Figure 10 BB cross-sectional view;

[0030] Figure 12 This is a schematic diagram of the initial state of the door lock mechanism of the present invention when the door is open;

[0031] Figure 13 yes Figure 12 BB cross-sectional view;

[0032] Figure 14 This is a schematic diagram of the second critical state of the door lock mechanism of the present invention;

[0033] Figure 15 This is a schematic diagram of the door lock mechanism of the present invention in three open states;

[0034] Figure 16 yes Figure 15 BB cross-sectional view;

[0035] Figure 17This is a schematic diagram of the push rod state in the door lock mechanism of the present invention;

[0036] Figure 18 This is a schematic diagram of the push rod in state two of the door lock mechanism of the present invention;

[0037] Figure 19 This is a schematic diagram of the dishwasher structure according to Embodiment 1 of the present invention;

[0038] Figure 20 This is a schematic diagram of the dishwasher state according to Embodiment 1 of the present invention;

[0039] Figure 21 This is a schematic diagram of the dishwasher in state two according to Embodiment 1 of the present invention;

[0040] Figure 22 This is a schematic diagram of the dishwasher in state three according to Embodiment 1 of the present invention;

[0041] Figure 23 This is a schematic diagram of the principle of the actuator method one in the door lock mechanism of the present invention;

[0042] Figure 24 This is a schematic diagram of the second type of actuator in the door lock mechanism of the present invention.

[0043] In the diagram: 1-Locking body; 2-Base; 3-Upper locking plate; 4-Auxiliary spring; 5-Lower locking plate; 6-Main spring; 7-Spring base; 8-Reset spring; 9-Torsion spring; 10-Stop block; 11-Door closing connecting plate; 12-Connecting plate; 13-Housing shell; 14-Drive mechanism; 15-First push rod; 16-Second push rod; 17-Gap; 18-Box body; 19-Door cover; 111-Guide post; 121-Lifting guide groove; 122-First inclined surface; 101-Second inclined surface; 102-Snap-fit ​​part; 151-Rack; 152-Pin; 161-Latch.

Detailed Implementation Methods

[0044] Example 1:

[0045] See Figure 1 , 2The door lock mechanism includes an actuator and a triggering mechanism that cooperates with the actuator. The actuator includes a low-load mechanism, a high-load mechanism, a locking body 1, and a switching device. The low-load mechanism and the high-load mechanism are set independently. The triggering mechanism includes a drive mechanism 14, a push rod, and a latch 161. The drive mechanism 14 is connected to the push rod and can drive the push rod to move. The front end of the push rod is provided with a latch 161 that cooperates with the locking body 1. The low-load mechanism and the high-load mechanism act on the locking body 1 to provide locking force for the latch 161. The switching device switches the locking force of the latch 161 by changing the way the low-load mechanism and the high-load mechanism act on the locking body 1. The small-load mechanism includes an upper locking plate 3 and an auxiliary spring 4, while the large-load mechanism includes a lower locking plate 5, a main spring 6, and a spring base 7. The locking body 1 can exert a force on the upper locking plate 3 to drive it to move. The auxiliary spring 4 is disposed between the upper locking plate 3 and the lower locking plate 5, and the main spring 6 is disposed between the lower locking plate 5 and the spring base 7. The switching device can be locked between the upper locking plate 3 and the lower locking plate 5. The system also includes a base 2 and a housing 13. The housing 13 and the base 2 are fitted together to form a cavity. The locking body 1, the upper locking plate 3, the lower locking plate 5, and the spring base 7 are all installed within the cavity formed by the base 2 and the housing 13.

[0046] See Figure 2 The switching device includes a closing connecting plate 11, a connecting plate 12, a stop block 10, a return spring 8, and a torsion spring 9. The closing connecting plate 11 is movable under the drive of the latch 161. The closing connecting plate 11 is connected to the connecting plate 12, and the connecting plate 12 is connected to the stop block 10. The left and right movement of the closing connecting plate 11 can drive the connecting plate 12 to move up and down. The up and down movement of the connecting plate 12 can drive the stop block 10 to move left and right. The return spring 8 abuts against the closing connecting plate 11 to reset the closing connecting plate 11. The torsion spring 9 abuts against the stop block 10 to reset the stop block 10. The closing connecting plate 11 is provided with a guide post 111, the connecting plate 12 is provided with a lifting guide groove 121 and a first inclined surface 122, the stop block 10 is provided with a second inclined surface 101 and a locking part 102, the guide post 111 is installed in the lifting guide groove 121, the lifting guide groove 121 is a groove with varying height, the first inclined surface 122 abuts against the second inclined surface 101, and the locking part 102 can be locked between the upper locking plate 3 and the lower locking plate 5, so that the locking body 1 loses the force on the auxiliary spring 4, and generates a compressive force on the main spring 6.

[0047] See Figure 3When the closing connecting plate 11 is triggered, it is pushed and moved. The guide post 111 moves from a lower position to a higher position within the lifting guide groove 121 of the connecting plate 12, driving the connecting plate 12 to move downward. The first inclined surface 122 of the driving connecting plate 12 abuts against the second inclined surface 101 of the stop block 10. The stop block 10 moves to the right under the action of the connecting plate 12. The locking part 102 of the stop block 10 is no longer between the upper locking plate 3 and the lower locking plate 5. At this time, the auxiliary spring 4 acts on the locking body 1, and the load force is small. Referring to Figure 4, when the closing connecting plate 11 is not triggered...

[0048] When the connecting plate 12 and the stop block 10 are in their natural state, the guide post 111 of the closing connecting plate 11 is located at the lower position of the lifting guide groove 121 of the connecting plate 12. At this time, the connecting plate 12 is located at the top and does not drive the stop block 10. The stop block 10 moves to the left under the action of the torsion spring 9. The locking part 102 on the stop block 10 is locked between the upper locking plate 3 and the lower locking plate 5. At this time, the auxiliary spring 4 loses its function, and the main spring 6 acts on the locking body 1, resulting in a large load force. When the auxiliary spring 4 is in its natural state, the distance between the lower end face of the upper locking plate 3 and the upper end face of the lower locking plate 5 is L1, and the height of the locking part 102 is L2, where 0.8*L1<L2<L1.

[0049] See Figure 5 The locking body 1 is located between the base 2 and the housing 13 and is rotatable. Under the action of external force, the locking body 1 rotates and the bottom of the locking body 1 abuts against the locking plate 3, which needs to overcome the load force of the auxiliary spring 4 or the main spring 6.

[0050] See Figure 6 , 8 10. During the closing action: The push rod moves to the left, causing the locking body 1 to rotate counterclockwise. Initially, the locking body 1 and the upper locking plate 3 are in contact on the equal arc surface, and only the friction generated by the auxiliary spring 4 needs to be overcome, with a closing force of less than 20N. After passing the equal arc surface, i.e., after passing the flip point, the auxiliary spring 4 drives the upper locking plate 3 to move upward, and the locking body 1 can rotate counterclockwise under the action of the upper locking plate 3, automatically driving the door hook to move to the left, and there is a sucking sensation when closing the door.

[0051] See Figure 7 , 9 11. During the closing process: Initially, under the action of the torsion spring 9, the stop block 10 is constantly subjected to a force that moves to the left, but because the upper locking plate 3 has not reached the designated position, the stop block 10 cannot enter. When the closing action is completed, the upper locking plate 3 reaches its highest position, and the stop block 10, under the action of the torsion spring 9, moves to the left and extends between the upper locking plate 3 and the lower locking plate 5, automatically completing the locking.

[0052] See Figure 12 , 13The initial operation of the door lock mechanism in state 1 (opening state): The push rod drives the latch 161 to move to the right in state 1. At this time, the stop block 10 acts as a latch, which is equivalent to a fixed connection between the upper locking plate 3 and the lower locking plate 5. At this time, the auxiliary spring 4 is ineffective, and the main spring 6 acts to prevent the door from opening. This is the automatic opening process of the dishwasher, which does not require manual intervention from the user. If the user intervenes manually at this time, the door can be forcibly pulled open. The locking body 1 rotates clockwise under the action of the latch 161, and the upper locking plate 3 and the lower locking plate 5 move downward together. The auxiliary spring 4 is not compressed, while the main spring 6 is compressed. The locking force is above 40N, and the maximum opening force is 60N.

[0053] See Figure 14 , 15 16, Figure 14 and Figure 12 The difference is that, Figure 14 It is the state where the ejector pin 152 extends and presses against the door closing connecting plate 11, and Figure 12 The state is that the ejector pin 152 retracts, and instead of pressing against the closing connecting plate 11, the latch 161 presses against the closing connecting plate 11. The opening state two and three operation process: The ejector pin 152 triggers the door lock's closing connecting plate 11, connecting plate 12, and stop block 10. At this time, the stop block 10 does not act as a latch under the action of the connecting plate 12 of the switching mechanism. The auxiliary spring 4 then acts as an obstacle to opening the door, allowing for easy opening. The locking body 1 rotates clockwise under the action of the door hook, causing the upper locking plate 3 to move downwards, simultaneously preventing the stop block 10 from entering between the upper locking plate 3 and the lower locking plate 5. The auxiliary spring 4 is compressed, while the main spring 6 is not compressed, resulting in a maximum opening force of 20N.

[0054] See Figure 17 , 18 The push rod includes a first push rod 15 and a second push rod 16. One end of the first push rod 15 is provided with a rack 151 that is installed in conjunction with the drive mechanism 14, and the other end is provided with a pin 152 that is installed in conjunction with the door closing connecting plate 11. The outer end of the second push rod 16 is provided with a latch 161. The first push rod 15 and the second push rod 16 are installed in conjunction with each other.

[0055] In the retracted state of the drive mechanism 14 (push rod state one), a gap 17 is formed between the first push rod 15 and the second push rod 16. After the drive mechanism 14 drives the first push rod 15 to move a certain distance, the gap between the first push rod 15 and the second push rod 16 is eliminated. At this time, the drive mechanism 14 further pushes the first push rod 15 and the second push rod 16 to move simultaneously (push rod state two). In the state where there is no gap between the first push rod 15 and the second push rod 16, the end of the ejector pin 152 is on the outside of the latch 161, contacting the closing connecting plate 11, and the door is closed. The guide post 111 of the connecting plate 11 moves within the lifting guide groove 121 of the connecting plate 12. Because the lifting guide groove 121 is a groove with varying height, it drives the connecting plate 12 to move downward as a whole. The first inclined surface 122 of the connecting plate 12 abuts against the second inclined surface 101 of the stop block 10, pushing the stop block 10 to move horizontally. The stop block 10 moves to the right, and the locking part 102 of the stop block 10 is not between the upper locking plate 3 and the lower locking plate 5. At this time, the auxiliary spring 4 acts on the locking body 1, and the load force is small, realizing the switching from large force to small force.

[0056] See Figure 19 A dishwasher includes a cabinet 18 and a door cover 19. A triggering mechanism is installed on the cabinet 18, and an actuator that cooperates with the triggering mechanism is installed on the door cover 19. The actuator includes a small load mechanism, a large load mechanism, a locking body 1, and a switching device. The small load mechanism and the large load mechanism are independently arranged. The triggering mechanism includes a drive mechanism 14, a push rod, and a latch 161. The drive mechanism 14 is connected to the push rod and can drive the push rod to move. The front end of the push rod is provided with a latch 161 that cooperates with the locking body 1. The small load mechanism and the large load mechanism act on the locking body 1 to provide locking force for the latch 161. The switching device switches the locking force of the latch 161 by changing the way the small load mechanism and the large load mechanism act on the locking body 1.

[0057] See Figure 20 , 21 22. When closing the door, the push rod retracts, and the load on the door lock mechanism shifts to a high load. At this point, the locking force is large after closing the door. After automatically opening the door to a certain distance, the load on the door lock switches from a high load to a low load, and the opening force is small. After automatically opening the door, the lever is pulled back, and the load is still small. When a hand is placed on the side of the door cover 19, the clamping force is relatively small.

[0058] See Figure 23 Schematic diagram of actuator mode 1: When the stop block 10 does not move to the left, the auxiliary spring 4 plays a major role, and the opening force is small at this time. When the stop block 10 moves to the left and enters the upper locking plate 3 and lower locking plate 5, the auxiliary spring 4 fails, the main spring 6 takes effect, and the opening force is large.

[0059] See Figure 24The schematic diagram of the second actuator mechanism is as follows: When the stop block 10 is not moving to the left, the auxiliary spring 4 plays a major role, and the opening force is small. When the stop block 10 moves to the left and enters the upper locking plate 3 and lower locking plate 5, the auxiliary spring 4 and the main spring 6 work together (i.e., both the main spring 6 and the auxiliary spring 4 are active). In this scheme, the elastic force of the auxiliary spring 4 is much smaller than that of the main spring 6, and the elastic force of the main spring 6 is dominant, resulting in a large opening force. To more intuitively understand the actuator principle, Figure 23 , 24 All of them are labeled with Chinese names in the principle box, so that the public can more accurately understand the working principle of the switching between the main spring 6 and the auxiliary spring 4.

[0060] Example 2:

[0061] A new type of dishwasher includes a cabinet 18 and a door cover 19. The cabinet 18 is equipped with a triggering mechanism and an actuating mechanism. The triggering mechanism and the actuating mechanism are installed together. The actuating mechanism includes a low-load mechanism, a high-load mechanism, a locking body 1, and a switching device. The low-load mechanism and the high-load mechanism are set independently. The triggering mechanism includes a drive mechanism 14, a push rod, and a latch 161. The low-load mechanism and the high-load mechanism act on the locking body 1 to provide locking force to the latch 161. The switching device switches the locking force of the latch 161 by changing the way the low-load mechanism and the high-load mechanism act on the locking body 1.

[0062] In this embodiment, only the latch 161 is set on the door cover 19, while other components are set on the housing 18, which can also achieve the purpose of the present invention.

[0063] It should be noted that the door lock mechanism of this patent is not only applicable to dishwashers, but also to other appliances that require door opening and closing operations, such as washing machines and disinfection cabinets. The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the scope of protection of the present invention.

Claims

1. A door lock mechanism, including an actuator, characterized in that: It also includes a triggering mechanism that cooperates with the actuator. The actuator includes a small load mechanism, a large load mechanism, a locking body (1), and a switching device. The small load mechanism and the large load mechanism are set independently. The triggering mechanism includes a drive mechanism (14), a push rod, and a latch (161). The drive mechanism (14) is connected to the push rod and can drive the push rod to move. The front end of the push rod is provided with a latch (161) that cooperates with the locking body (1). The small load mechanism and the large load mechanism act on the locking body (1) to provide the locking force of the latch (161). The switching device changes the small load mechanism and the large load mechanism by changing the locking force of the large load mechanism. The mechanism acts on the locking body (1) to switch the locking force of the latch (161); the small load mechanism includes an upper locking plate (3) and an auxiliary spring (4), and the large load mechanism includes a lower locking plate (5), a main spring (6) and a spring base (7). The locking body (1) can exert a force on the upper locking plate (3) to drive the upper locking plate (3) to move. The auxiliary spring (4) is set between the upper locking plate (3) and the lower locking plate (5), and the main spring (6) is set between the lower locking plate (5) and the spring base (7). The switching device can be locked between the upper locking plate (3) and the lower locking plate (5).

2. The door lock mechanism as described in claim 1, characterized in that: The switching device includes a closing connecting plate (11), a connecting plate (12), a stop block (10), a reset spring (8), and a torsion spring (9). The closing connecting plate (11) is driven to move by the latch (161). The closing connecting plate (11) is connected to the connecting plate (12), and the connecting plate (12) is connected to the stop block (10). The left and right movement of the closing connecting plate (11) can drive the connecting plate (12) to move up and down. The up and down movement of the connecting plate (12) can drive the stop block (10) to move left and right. The reset spring (8) abuts against the closing connecting plate (11) to reset the closing connecting plate (11). The torsion spring (9) abuts against the stop block (10) to reset the stop block (10).

3. The door lock mechanism as described in claim 2, characterized in that: The closing connecting plate (11) is provided with a guide post (111), the connecting plate (12) is provided with a lifting guide groove (121) and a first inclined surface (122), the stop block (10) is provided with a second inclined surface (101) and a locking part (102), the guide post (111) is installed in the lifting guide groove (121), the lifting guide groove (121) is a groove with varying height, the first inclined surface (122) abuts against the second inclined surface (101), the locking part (102) can be locked between the upper locking plate (3) and the lower locking plate (5), so that the locking body (1) loses the force on the auxiliary spring (4) and generates a compressive force on the main spring (6).

4. The door lock mechanism as described in claim 3, characterized in that: When the auxiliary spring (4) is in its natural state, the distance between the lower end face of the upper locking plate (3) and the upper end face of the lower locking plate (5) is L1, and the height of the snap-fit ​​part (102) is L2, 0.8*L1<L2<L1.

5. The door lock mechanism as described in claim 4, characterized in that: It also includes a base (2) and a shell (13), the shell (13) and the base (2) are fitted together to form a cavity, and the locking body (1), the upper locking plate (3), the lower locking plate (5) and the spring base (7) are all installed in the cavity formed by the base (2) and the shell (13).

6. The door lock mechanism as described in claim 5, characterized in that: The push rod includes a first push rod (15) and a second push rod (16). One end of the first push rod (15) is provided with a rack (151) that is installed in conjunction with the drive mechanism (14), and the other end is provided with a pin (152) that is installed in conjunction with the door closing connecting plate (11). The outer end of the second push rod (16) is provided with a latch (161). The first push rod (15) and the second push rod (16) are installed in conjunction.

7. The door lock mechanism as described in claim 6, characterized in that: When the drive mechanism (14) is retracted, a gap (17) is formed between the first push rod (15) and the second push rod (16). After the drive mechanism (14) drives the first push rod (15) to eliminate the gap, the first push rod (15) and the second push rod (16) move simultaneously. When the first push rod (15) and the second push rod (16) are in a gapless state, the end of the ejector pin (152) is outside the latch (161).

8. A dishwasher, comprising a cabinet (18) and a door (19), characterized in that: A triggering mechanism is installed on the housing (18), and an actuator that cooperates with the triggering mechanism is installed on the door cover (19). The actuator includes a small load mechanism, a large load mechanism, a locking body (1), and a switching device. The small load mechanism and the large load mechanism are set independently. The triggering mechanism includes a drive mechanism (14), a push rod, and a latch (161). The drive mechanism (14) is connected to the push rod and can drive the push rod to move. The front end of the push rod is provided with a latch (161) that cooperates with the locking body (1). The small load mechanism and the large load mechanism act on the locking body (1) to provide the locking force of the latch (161). The switching device The locking force of the latch (161) is switched by changing the action of the small load mechanism and the large load mechanism on the locking body (1). The small load mechanism includes an upper locking plate (3) and an auxiliary spring (4), and the large load mechanism includes a lower locking plate (5), a main spring (6) and a spring base (7). The locking body (1) can exert a force on the upper locking plate (3) to drive the upper locking plate (3) to move. The auxiliary spring (4) is set between the upper locking plate (3) and the lower locking plate (5), and the main spring (6) is set between the lower locking plate (5) and the spring base (7). The switching device can be locked between the upper locking plate (3) and the lower locking plate (5).

9. A dishwasher, comprising a cabinet (18) and a door (19), characterized in that: The housing (18) is equipped with a triggering mechanism and an actuating mechanism. The triggering mechanism and the actuating mechanism are installed together. The actuating mechanism includes a small load mechanism, a large load mechanism, a locking body (1), and a switching device. The small load mechanism and the large load mechanism are set independently. The triggering mechanism includes a driving mechanism (14), a push rod, and a latch (161). The small load mechanism and the large load mechanism act on the locking body (1) to provide the locking force of the latch (161). The switching device achieves this by changing the way the small load mechanism and the large load mechanism act on the locking body (1). The locking force of the latch (161) can be switched; the small load mechanism includes an upper locking plate (3) and an auxiliary spring (4), and the large load mechanism includes a lower locking plate (5), a main spring (6) and a spring base (7). The locking body (1) can exert a force on the upper locking plate (3) to drive the upper locking plate (3) to move. The auxiliary spring (4) is set between the upper locking plate (3) and the lower locking plate (5), and the main spring (6) is set between the lower locking plate (5) and the spring base (7). The switching device can be locked between the upper locking plate (3) and the lower locking plate (5).

Images