Push type door lock and washing machine

Abstract

The present application provides a kind of press type door lock, including base, back cover, movement and cam assembly, wherein the movement and back cover are respectively clamped on the base, and the cam assembly is located between the back cover and base, and the cam assembly includes support, second pull rod and cam body;The base is provided with window, and the bayonet of cam body is towards the window;The cam body has a bayonet, and the sliding part is provided on the cam body, and the recessed block is provided on the sliding part, and the torsional spring is provided on the cam body and cooperates with the cam shaft.The press type door lock provided by the present application, when door cover is locked, the cam body is rotated on the cam shaft by door hook from the bayonet, so that the second pull rod slides along the arc surface of sliding part, and the second pull rod is clamped into the recessed block under the action of torsional spring after the end of thrust, so that the door cover is locked, and the safety and stability of operation are improved.

Description

Technical Field

[0001] This invention relates to the field of door lock technology, and more specifically to a push-button door lock and a washing machine. Background Technology

[0002] A washing machine is a cleaning appliance used to wash clothes. It is characterized by water conservation, low noise, and minimal wear and tear on clothes. A washing machine typically includes a cabinet and a clothes loading port on the cabinet. Clothes are put into the washing drum through the loading port, and the stains on the clothes are removed by mechanical force, detergent, and water, thus achieving the purpose of "cleaning clothes".

[0003] The push-button door lock is located on the door cover of the clothes compartment. It is usually achieved by pushing the cam with a door hook. Under the action of the torsion spring, the door hook is locked onto the cam. Then, the latch works with the cam to keep the door cover and the machine body in a locked state before starting the washing machine to clean the clothes.

[0004] For example, patent number CN109252765B, publication date: 2021-04-20, discloses a latch including a rotating member arranged rotatably in a plane of rotation between a closed rotational position and a released rotational position, and spring-biased in a direction toward the released rotational position. The rotating member holds a closed member in the closed rotational position and releases the closed member in the released rotational position. The latch also includes a movable latch for blocking engagement, which can be released by an upward limit rotational movement of the rotating member when the rotating member is in the closed rotational position. To lock the latch in the closed state, a locking assembly is provided, including a locking member arranged movable between an unlocked position and a locked position. The locking member forms a first blocking arrangement, which, in its locked position, prevents the rotating member from rotating from the closed rotational position to the released rotational position. In the unlocked position, the first blocking arrangement has moved out of the rotational path of the rotating member.

[0005] However, in the aforementioned patent, a biased spring is used to pull the latch on the side so that the latch can be engaged with the cam to lock the door. However, if too much force is used during the closing process, the door may collide with the washing machine and generate a rebound force, which may cause the latch to fail to reach the locking position or to disengage from the cam under the action of the rebound force, resulting in the door being loosely placed on the washing machine, which may easily cause safety hazards during washing. Summary of the Invention

[0006] The purpose of this invention is to address the aforementioned problems in existing technologies.

[0007] To solve the above problems, the present invention can be achieved through the following technical solution: a cam assembly for a push-button door lock, comprising:

[0008] A bracket, wherein a shaft hole is provided in the shaft hole;

[0009] The second pull rod is mounted on the bracket;

[0010] The cam body has a latch, the cam body is rotatably arranged around the cam shaft, the cam body has a sliding part, the sliding part is provided with a concave latch, and the cam body is provided with a torsion spring that cooperates with the cam shaft.

[0011] When the cam body's latch rotates under external force, the torsion spring is simultaneously subjected to force and is in a torsional state. At this time, the second pull rod slides forward along the arc surface of the sliding part. When the cam body stops under external force, the cam body rotates back under the action of the torsion spring, and finally the second pull rod stops in the concave block. At this time, the door lock is in the closed state.

[0012] When the cam body's latch is rotated by an external force again, the second pull rod overcomes the torsion of the torsion spring and moves away from the concave block. At this time, the second pull rod continues to slide forward along the arc surface on the other side of the sliding part. When the cam body stops under the external force, the cam body rotates back under the action of the torsion spring, and finally the second pull rod stops on the initial arc surface of the sliding part. At this time, the door lock is in the open state.

[0013] Preferably, the sliding part is provided with a first slide, a second slide, a third slide and a fourth slide that are interconnected, and the height of the arc surface of each of the first slide, the second slide, the third slide and the fourth slide from the axis of the shaft hole decreases in sequence. The fourth slide is connected to the first slide, and the concave block is located on the third slide.

[0014] Preferably, the first slide and the second slide are connected by a first inclined surface, the second slide and the third slide are connected by a second inclined surface, the third slide and the fourth slide are connected by a third inclined surface, and the fourth slide and the first slide are connected by a fourth inclined surface.

[0015] Preferably, the second pull rod is provided with a sliding rod, which slides sequentially along the first slide, the second slide and the third slide to the concave block. The cam body rotates to control the sliding rod to disengage from the concave block and slide along the fourth slide to the first slide.

[0016] Preferably, the second pull rod is provided with a first limiting hole, and the bracket is provided with a limiting block that cooperates with the first limiting hole, so that the second pull rod can move within the first limiting hole through the limiting block.

[0017] Preferably, the sidewall of the sliding part is provided with an arc-shaped part.

[0018] The present invention also provides a push-button door lock, including a base, a back cover, a mechanism, and a cam assembly of the push-button door lock according to any of the above embodiments, wherein the mechanism and the back cover are respectively snapped onto the base, and the cam assembly is located between the back cover and the base, and the cam assembly includes a bracket rotatably connected to the base.

[0019] The base has a window, and the bayonet of the cam body faces the window.

[0020] Preferably, the bracket further includes a second limiting hole, a guide post is provided on the base, the top of the guide post has a limiting cover, and a fifth spring is provided on the guide post. The bracket moves on the guide post under the limiting cover through the second limiting hole.

[0021] Preferably, the base is provided with a spring groove, a sixth spring that moves up and down is provided in the spring groove, and a spring seat that pushes against the second pull rod is provided above the sixth spring.

[0022] Preferably, the movement includes a housing, on which a first slider, a second slider, and a third slider are slidably disposed in sequence, and a first spring, a second spring, and a third spring are respectively disposed at one end of the first slider, the second slider, and the third slider.

[0023] Preferably, the third slider is provided with a fitting portion that cooperates with the second slider.

[0024] Preferably, the housing is provided with a coil, and the housing is provided with a first terminal, a second terminal and a third terminal, the second terminal and the third terminal being electrically connected to the coil;

[0025] The housing contains a movable piece that slidably engages with the first and second terminals.

[0026] Preferably, a fourth slider that cooperates with the coil is slidably connected inside the box, and the coil drives the fourth slider to cooperate with the third slider;

[0027] The fourth slider is slidably provided with a first pull rod and a fourth spring that pushes against the first pull rod. The fourth slider has a heart-shaped groove, and the first pull rod slides within the heart-shaped groove.

[0028] Preferably, a limiting member that cooperates with the fourth slider is slidably disposed inside the box, and the limiting member cooperates with the moving piece.

[0029] The present invention also provides a washing machine including a push-button door lock according to any of the above-described solutions.

[0030] Compared with the prior art, the advantages of this application are: when the door cover is locked, the cam body is pushed from the latch by the door hook to rotate on the camshaft, thereby causing the second pull rod to slide forward along the arc surface of the sliding part. After the thrust ends, the second pull rod is locked into the concave block under the action of the torsion spring, thereby locking the door cover and improving the safety and stability of operation. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure;

[0032] Figure 2 This is a plan view of the entire movement and back cover after they are hidden;

[0033] Figure 3 This is a schematic diagram of the overall structure of the cam assembly;

[0034] Figure 4 It is a 3D display and a 2D schematic diagram of the cam body;

[0035] Figure 5 This is a schematic diagram of the internal components of the bracket after partial cross-section.

[0036] Figure 6 This is a schematic diagram of the connection structure between the cam assembly and the door hook and the first slider, the second slider and the third slider;

[0037] Figure 7 This is a plan view of the movement and back cover in the locked state after they have been concealed.

[0038] Figure 8 This is an exploded structural diagram of the connecting components between the hidden cam assembly and the base in the rear cover.

[0039] Figure 9 This is a schematic diagram of the assembly structure in which the first slider pushes against the second slider and engages with the cam body in the locked state;

[0040] Figure 10 This is a schematic diagram of the engagement between the second and third sliders in the locked state;

[0041] Figure 11 This is a schematic diagram of the overall planar view of the second pull rod disengaging from the cam body in the locked state;

[0042] Figure 12 This is a schematic diagram of the internal structure of the movement and cam assembly;

[0043] Figure 13 This is a planar schematic diagram of the door hook and the cam body in the locked state;

[0044] Figure 14 This is a planar schematic diagram of the second pull rod gradually disengaging from the cam body;

[0045] Figure 15 This is a planar schematic diagram showing the separation of the door hook and the cam;

[0046] Figure 16 This is a half-section planar schematic diagram of some parts in their initial state;

[0047] Figure 17 This is a schematic diagram of the overall exploded and disassembled structure.

[0048] Figure 18 This is a planar schematic diagram of the first slider, second slider, and third slider in the unlocked state of the cam assembly.

[0049] Explanation of reference numerals in the attached figures:

[0050] 1. Base; 11. Window; 12. Guide post; 121. Limiting rod; 122. Limiting cover; 13. Sixth spring; 14. Spring seat; 141. Inclined block; 15. Fifth spring; 16. Spring groove; 161. Limiting groove;

[0051] 2. Mechanism; 21. First slider; 22. First spring; 23. Second slider; 24. Second spring; 25. Third slider; 251. Fitting part; 26. Third spring; 27. Box body; 270. Limiting component; 271. Fourth spring; 272. Fourth slider; 2721. Protrusion; 273. First pull rod; 274. Heart-shaped groove; 275. Coil; 276. Third terminal; 277. Second terminal; 278. First terminal; 279. Moving piece;

[0052] 3. Back cover;

[0053] 4. Cam assembly; 41. Second tie rod; 411. Sliding rod; 412. First limiting hole; 42. Bracket; 420. Second limiting hole; 421. Limiting block; 422. Camshaft; 43. Cam body; 431. Sliding part; 4311. First slide table; 4312. Second slide table; 4313. Third slide table; 4314. Fourth slide table; 4315. First inclined surface; 4316. Second inclined surface; 4317. Third inclined surface; 4318. Fourth inclined surface; 4319. Fifth inclined surface; 432. Arc-shaped part; 4321. First arc-shaped surface; 4322. Second arc-shaped surface; 433. Concave locking block; 434. Extension groove; 435. Bay opening; 436. Triangular groove; 437. Placement groove; 438. Rotating shaft; 44. Torsion spring;

[0054] 5. Door hook. Detailed Implementation

[0055] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described below. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of the invention. The terms "forward," "axial direction," "above," and "below" used below are for the purpose of clearly indicating structural positional relationships and are not intended to limit the invention. In this invention, "vertical," "horizontal," and "parallel" are defined as including cases within ±10% of the standard definition. For example, vertical usually refers to an angle of 90 degrees relative to a baseline, but in this invention, vertical refers to cases including those within 80 to 100 degrees.

[0056] The following are specific embodiments of the present invention, which, together with the accompanying drawings, will further describe the technical solution of the present invention.

[0057] like Figure 1-18 As shown, a cam assembly for a push-button door lock includes:

[0058] A bracket 42 has a shaft hole, and a camshaft 422 is disposed in the shaft hole;

[0059] The second pull rod 41 is mounted on the bracket 42;

[0060] The cam body 43 has a bayonet 435. The cam body 43 is rotatably arranged around the cam shaft 422. The cam body 43 has a sliding part 431. The sliding part 431 is provided with a concave block 433. The cam body 43 is provided with a torsion spring 44 that cooperates with the cam shaft 422.

[0061] When the latch 435 of the cam body 43 is rotated by an external force, the torsion spring 44 is simultaneously subjected to force and is in a torsional state. At this time, the second pull rod 41 slides forward along the arc surface of the sliding part 431. When the cam body 43 stops under the external force, the cam body 43 rotates back under the action of the torsion spring 44, and finally the second pull rod 41 stops in the concave latch 433. At this time, the door lock is in the closed state.

[0062] When the latch 435 of the cam body 43 is rotated by an external force again, the second pull rod 41 overcomes the torque of the torsion spring 44 and moves away from the concave latch 433. At this time, the second pull rod 41 continues to slide forward along the arc surface on the other side of the sliding part 431. When the cam body 43 stops under the action of the external force, the cam body 43 rotates under the action of the torsion spring 44, and finally the second pull rod 41 stops on the initial arc surface of the sliding part 431. At this time, the door lock is in the open state.

[0063] Specifically, the door hook 5 cooperates with the cam body 43, such as Figure 4 , Figure 5 As shown, the second pull rod 41 moves along the arc-shaped surface. The second pull rod 41 slides forward from the arc-shaped surface at end F and engages within the concave block 433, locking the door. When the cam body 43 rotates again, the second pull rod 41 disengages from the concave block 433 and slides out from the arc-shaped surface at end E (the arc-shaped surface on the other side of the concave block 433). The bracket 42 supports the cam body 43, allowing it to rotate on the cam shaft 422. When the door hook 5 pushes against the cam body 43 from the latch 435 (i.e., when the user pushes the washing machine door cover and locks the washing machine door to achieve the locking state), the cam body 43 is positioned on the cam shaft 422. The cam body rotates, causing the second pull rod 41 to slide in the sliding part 431. The arc-shaped part 432 narrows the sliding part 431, allowing the second pull rod 41 to slide preferentially from the cam body 43 along the arc-shaped part 432 towards the channel X of the cam body 43. The arc-shaped part 432 significantly reduces the collision and friction between the second pull rod 41 and the cam body 43, improving the service life of the parts. When the door is no longer pressed, the torsion spring 44, in a torsional state, applies a certain rotational force to the cam body 43, causing the second pull rod 41 to fall back from the channel X and engage with the concave block 433, thus locking the cam body 43 and locking the door to the washing machine. The concave block 433 has raised sides relative to its center to prevent vibration during washing, causing the second pull rod 41 to disengage from the concave block 433, resulting in the rotation of the cam body 43 and placing the washing machine door lock in a semi-locked state. The second pull rod 41 and the bracket 42 are preferably made of metal, which improves service life and ensures that the washing machine operates safely. Moreover, the contact end face of the sliding rod 411 at the end of the second pull rod 41 is arc-shaped, which can effectively make point contact with the arc-shaped surface of the sliding part 431, preventing the sliding rod 411 from jamming the cam body 43.

[0064] In one embodiment of the present invention, a first slide 4311, a second slide 4312, a third slide 4313, and a fourth slide 4314 are sequentially arranged within the sliding part 431 and are interconnected. The height of the arcuate surface of each of the first slide 4311, second slide 4312, third slide 4313, and fourth slide 4314 from the axis of the shaft hole decreases sequentially. The fourth slide 4314 is connected to the first slide 4311, and a concave locking block 433 is located on the third slide 4313. The first slide 4311 and the second slide 4312 are connected by a first inclined surface 4315, the second slide 4312 and the third slide 4313 are connected by a second inclined surface 4316, the third slide 4313 and the fourth slide 4314 are connected by a third inclined surface 4317, and the fourth slide 4314 and the first slide 4311 are connected by a fourth inclined surface 4318. The aforementioned inclined plane prevents the second pull rod 41 from returning to the initial slide position after it moves from the initial slide position to the next slide position. At the same time, the second pull rod 41 can move along the inclined plane to the next position, thus having a limiting and guiding function.

[0065] Specifically, the first slide 4311 is the initial position of the second pull rod 41 when it is unlocked. When the cam body 43 rotates on the camshaft 422, the second pull rod 41 slides down from the first slide 4311 to the second slide 4312 along the arc 432. Under the torsion of the torsion spring 44, the cam body 43 rotates in the opposite direction, causing the second pull rod 41 to slide directly from the second slide 4312 to the concave block 433 of the third slide 4313 (or the second pull rod 41 slides from the second slide 4312 along the first inclined surface 4315 to the concave block 433 of the third slide 4313). Pressing the door cover again will cause the second pull rod 41 to disengage from the concave block 433 and enter the channel along the fifth inclined surface 4319. Y, the second pull rod 41 then slides down along the second inclined surface 4316 and the third inclined surface 4317 to the fourth slide table 4314 (the second inclined surface 4316 and the third inclined surface 4317 are two adjacent surfaces on the same plane). The second pull rod 41 slides down along the arc-shaped part 432 on the other side of the opposite concave block 433 from the fourth slide table 4314 to the first slide table 4311, thus returning to the initial unlocked position. An extension groove 434 is provided on the sliding part 431. The extension groove 434 includes a channel X and a channel Y. The extension groove 434 is connected to the second slide table 4312 and the fourth slide table 4314 respectively to prevent the sliding rod 411 of the second pull rod 41 from colliding with the inner wall of the sliding part 431 due to excessive force of the door cover.

[0066] As an embodiment of the present invention, the second pull rod 41 is located on the sliding part 431. A sliding rod 411 is provided on the second pull rod 41. The sliding rod 411 slides sequentially along the first slide 4311, the second slide 4312 and the third slide 4313 to the concave block 433. The cam body 43 rotates to control the sliding rod 411 to disengage from the concave block and slide along the fourth slide 4314 to the first slide 4311.

[0067] As an embodiment of the present invention, the second pull rod 41 is provided with a first limiting hole 412, and the bracket 42 is provided with a limiting block 421 that cooperates with the first limiting hole 412. The second pull rod 41 moves within the first limiting hole 412 through the limiting block 421.

[0068] Specifically, the limiting block 421 is located on the side of the bracket 42 away from the sliding rod 411. The limiting block 421 is integrally fixed on the bracket 42 and plays a limiting role in the swing of the sliding rod 411. Under the push of the spring seat 14, the sliding rod 411 can always smoothly enter the second slide 4312 from the first slide 4311 with a small force, until it slides from the fourth slide 4314 back onto the first slide 4311.

[0069] As an embodiment of the present invention, an arc-shaped portion 432 is provided on the side wall of the sliding portion 431.

[0070] Specifically, the arc-shaped part 432 includes a first arc-shaped surface 4321 and a second arc-shaped surface 4322. When the second pull rod 41 enters along end F, it preferentially contacts the first arc-shaped surface 4321. Its arc-shaped structure can buffer the force of the second pull rod 41 acting on the sliding part 431 and can better slide from the first slide table 4311 into the second slide table 4312. When the door is opened, the second pull rod 41 will slide along the second arc-shaped surface 4322 from the fourth slide table 4314 onto the first slide table 4311.

[0071] As one embodiment of the present invention, a placement groove 437 is provided on the cam body 43, and the torsion spring 44 is located in the placement groove 437.

[0072] Specifically, the torsion spring 44 is disposed in the placement groove 437, and one end of the torsion spring 44 is engaged with the cylindrical part of the cam body 43 sleeved on the camshaft 422. This causes the torsion spring 44 to be in a torsional state when the cam body 43 rotates on the camshaft 422, and after the cam body 43 stops rotating, the torsion spring 44 causes the cam body 43 to fall back to the initial position through the released elastic force.

[0073] As one embodiment of the present invention, it includes a base 1, a back cover 3, a mechanism 2 and a cam assembly 4, wherein the mechanism 2 and the back cover 3 are respectively snapped onto the base 1, and the cam assembly 4 is located between the back cover 3 and the base 1. The cam assembly 4 includes a bracket 42 rotatably connected to the base 1. A window 11 is provided on the base 1, and the slot 435 of the cam body 43 faces the window 11.

[0074] Specifically, the base 1 supports and protects the various components. The mechanism 2 is snapped onto the base 1 and engages with the cam assembly 4. The rear cover 3 engages with the base 1 through a snap-fit, forming a receiving cavity between them. The cam assembly 4 is located inside the receiving cavity. When the door cover needs to be locked, its door hook 5 enters from the window 11 and engages with the cam body 43.

[0075] As an embodiment of the present invention, the movement 2 includes a housing 27, on which a first slider 21, a second slider 23 and a third slider 25 are slidably arranged in sequence. A first spring 22, a second spring 24 and a third spring 26 are respectively provided at one end of the first slider 21, the second slider 23 and the third slider 25. A triangular groove 436 is provided on the cam body 43, and a sixth inclined surface is provided on the triangular groove 436. The sixth inclined surface helps the second slider 23 to slide into the cam body 43.

[0076] Specifically, the first spring 22 cooperates with the first slider 21, the second spring 24 cooperates with the second slider 23, and the third spring 26 cooperates with the third slider 25. After the cam and the door hook 5 are engaged, the second spring 24 pushes the second slider 23 into the triangular groove 436 (when the cam body 43 is not locked, the second slider 23 will adhere to the outer wall of the cam body 43, and the second spring 24 will remain compressed). At this time, the third slider 25 cooperates with the second slider 23 through the contact part 251. The first slider 21 adheres to the door hook 5 under the action of the first spring 22, thereby restricting the door hook 5. Without the structure of the third slider 25, the locking relies on the limiting member 270 falling down and engaging the second slider 23, restricting the movement of the second slider 23. After the washing is finished, the door lock unlocks and the limiting member 270 lifts up. Under the action of the torsion spring 44, the second slider 23, which is no longer obstructed, will move away from the cam body 43. At this time, the cam body 43 flips, and the washing machine door will automatically open.

[0077] As an embodiment of the present invention, a coil 275 is provided on the housing 27, and a first terminal 278, a second terminal 277 and a third terminal 276 are respectively provided on the housing 27. The second terminal 277 and the third terminal 276 are electrically connected to the coil 275. A movable piece 279 that cooperates with the first terminal 278 and the second terminal 277 is slidably provided inside the housing 27.

[0078] Specifically, when pulse signals are given to the second terminal 277 and the third terminal 276 of the mechanism 2, the coil 275 is energized and attracted. At this time, the first pull rod 273 disengages from the heart-shaped slide groove 274, and the fourth slider 272 slides upward axially under the action of the fourth spring 271. This causes the fourth slider 272 to drive the limiting member to fall under the elastic action of the moving piece 279, thus connecting the circuit of the first terminal 278 and the second terminal 277, thereby giving the washing machine a lock signal. At the same time, during the sliding process of the fourth slider 272, its protrusion... 2721 will drive the third slider 25 to slide against the third spring 26 (making the third spring 26 in a compressed state, and the elastic force of the fourth spring 271 is greater than the elastic force of the third spring 26. At this time, the fourth spring 271 is in an extended state, while the third spring 26 is in a compressed state). Then, the contact part 251 of the third slider 25 contacts the second slider 23, thereby blocking the second slider 23 and restricting its displacement. In turn, it restricts the rotation of the cam body 43, thus achieving locking.

[0079] As an embodiment of the present invention, a fourth slider 272 that cooperates with a coil 275 is slidably connected inside the box 27. The coil 275 drives the fourth slider 272 to cooperate with the third slider 25. A first pull rod 273 and a fourth spring 271 that pushes against the first pull rod 273 are slidably arranged inside the fourth slider 272. A heart-shaped groove 274 is opened inside the fourth slider 272, and the first pull rod 273 slides within the heart-shaped groove 274.

[0080] Specifically, the fourth slider 272 slides inside the housing 27. When the coil 275 is activated, it will drive the fourth slider 272 to move, thereby causing the fourth slider 272 to drive the third slider 25 to move, so that the third slider 25 restricts the second slider 23.

[0081] As an embodiment of the present invention, a limiting member 270 that cooperates with the fourth slider 272 is slidably disposed inside the box body 27, and the limiting member 270 cooperates with the moving piece 279.

[0082] Specifically, the fourth slider 272 has an inclined surface. When a locking signal is received, it will push the limiting member 270 to drop the moving piece 279, thus connecting the circuit of the first terminal 278 and the second terminal 277. When an unlocking signal is received, the inclined surface of the fourth slider 272 will cause the limiting member 270 to be lifted, that is, to lift the moving piece 279, thus disconnecting the circuit of the first terminal 278 and the second terminal 277.

[0083] As an embodiment of the present invention, the bracket 42 further includes a second limiting hole 420, a guide post 12 is provided on the base 1, the top of the guide post 12 has a limiting cover 122, and a fifth spring 15 is provided on the guide post 12. The bracket 42 moves on the guide post 12 under the limiting cover 122 through the second limiting hole 420.

[0084] Specifically, when the door hook 5 pulls the cam body 43, it causes the bracket 42 to tilt on the base 1 (e.g., Figure 13 , Figure 14 As shown, when the door hook 5 is completely disengaged, it is pushed by the fifth spring 13, causing the bracket 42 to return to a horizontal state. A limit rod 121 is provided below the limit cover 122. The limit cover 122 is connected to the guide seat 12 through the limit rod 121. Specifically, the bracket 42 rotates around the fulcrum of the rotating shaft 438 on the limit cover 122.

[0085] As an embodiment of the present invention, a spring groove 16 is provided on the base 1, a sixth spring 13 that moves up and down is provided in the spring groove 16, and a spring seat 14 that pushes against the second pull rod 41 is provided above the sixth spring 13.

[0086] Specifically, the elastic force of the sixth spring 15 is used to make the spring seat 14 slide along the spring groove 16 and push against the end of the second pull rod 41, so that the sliding rod 411 can always fit against the cam body 43. Furthermore, when the door lock is locked, the sliding rod 411 can better fit against the concave block 433. The spring seat 14 is provided with several inclined blocks 141, and the spring groove 16 is provided with a limiting groove 161 that cooperates with the inclined blocks 141. At the same time, the sixth spring 13 contacts the inclined surface of the inclined block 141, so that the sixth spring 13 pushes the spring seat 14 to slide along the limiting groove 161 through the elastic force.

[0087] First, the initial state:

[0088] Unlocked initial state (e.g.) Figure 2 As shown): the second pull rod 41 is located on the first slide 4311, and the bayonet 435 of the cam body 43 faces the window 11 of the base 1, while the second slider 23 is attached to the outer wall of the cam body 43, and the second spring 24 is in a compressed state.

[0089] Second, locked state:

[0090] When the cam assembly 4 is locked, the door hook 5 enters through the window 11 and pushes the cam body 43 on the camshaft 422 through the latch 435, causing the second pull rod 41 to slide along the sliding part 431. When the door hook 5 no longer applies force to the cam body 43, the cam body 43 rotates in the opposite direction on the camshaft 422 under the elastic action of the torsion spring 44, locking the sliding rod 411 of the second pull rod 41 into the concave latch block 433. At this time, the second slider 23 will be pushed into the triangular groove 436 by the pushing effect of the second spring 24, and the third slider 25 will restrict the movement of the second slider 23, thereby locking the cam.

[0091] When the washing machine is locked, a pulse signal is sent to the second terminal 277 and the third terminal 276 of the washing machine, which energizes the coil 275 and causes it to engage. At this time, the first pull rod 273 disengages from the heart-shaped slide groove 274, and the fourth slider 272 slides upward axially under the action of the fourth spring 271. This causes the fourth slider 272 to drive the limiting member to fall under the elastic action of the moving piece 279, thus connecting the circuit of the first terminal 278 and the second terminal 277, thereby giving the washing machine a lock signal. At the same time, during the sliding process of the fourth slider 272, its protrusion 2721 will drive the third slider 25 to slide against the third spring 26 (so that the third spring 26 is in a compressed state, and the elastic force of the fourth spring 271 is greater than that of the third spring 26). The force of the action (at this time, the fourth spring 271 is in an uncompressed state, while the third spring 26 is in a compressed state) is applied, and then the contact part 251 of the third slider 25 contacts the second slider 23, thereby blocking the second slider 23 and restricting its displacement. In contrast, this restricts the rotation of the cam body 43, thus locking it. In the locked state, if the user presses the door hook 5 again, the second pull rod 41 will disengage from the concave block 433. Under the action of the torsion spring 44, the cam body 43 rotates towards the door opening position. However, since the mechanism 2 is still in the locked state, the rotation of the cam body 43 is restricted by the second slider 23, which is in turn restricted by the third slider 25. Therefore, the washing machine door remains closed.

[0092] Third, unlocked status:

[0093] After cleaning, pulse signals are given to the second terminal 277 and the third terminal 276. The coil 275 moves once, causing the fourth slider 272 to slide inside the housing 27, compressing the fourth spring 271. The first pull rod 273 disengages from the heart-shaped slide groove 274. At this time, the limiting member 270 is lifted by the pushing force of the fourth slider 272, and the moving plate 279 is also lifted, disconnecting the circuit between the first terminal 278 and the second terminal 277. The locking signal disappears. At this time, the limiting member 270 of the mechanism 2 is lifted, but due to the action of the torsion spring 44, the cam body 43 will... The slight resistance of the second slider 23 causes it to press against the third slider 25. Since the elastic force of the third spring 26 is insufficient to reset the third slider 25, all components remain stationary and the door remains locked. When the door is pressed again, the cam body 43 rotates under pressure, thereby eliminating the pressure of the second slider 23. Under the pushing action of the third spring 26, the third slider 25 returns to its initial state, while the second slider 23 returns to the state of adhering to the side wall of the cam. The cam body 43 can then be flipped, and the door is opened naturally.

[0094] The technical solutions of the present invention described above provide solutions that are significantly different from those of the prior art, addressing the problem that existing technical solutions are too simplistic. The parts not covered in this application are the same as or can be implemented using existing technologies, and will not be described in detail here.

[0095] The technical solutions in the above embodiments have clearly and completely described the content of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

Claims

1. A push-button door lock, characterized in that, The device includes a base (1), a rear cover (3), a movement (2), and a cam assembly (4). The movement (2) and the rear cover (3) are respectively snapped onto the base (1), and the cam assembly (4) is located between the rear cover (3) and the base (1). The cam assembly (4) includes a bracket (42) rotatably connected to the base (1), a second pull rod (41) disposed on the bracket (42), and a cam body (43) rotating around a cam shaft (422). One end of the second pull rod (41) is provided with a sliding rod (411). When the cam body (43) rotates, the sliding rod (411) abuts against and slides along the arc surface of the sliding part (431). A window (11) is provided on the base (1), and the bayonet (435) of the cam body (43) faces the window (11). The cam body (43) has a bayonet (435), a sliding part (431) is provided on the cam body (43), a concave block (433) is provided on the sliding part (431), and a torsion spring (44) that cooperates with the cam shaft (422) is provided on the cam body (43). The sliding part (431) is provided with a first slide (4311), a second slide (4312), a third slide (4313), and a fourth slide (4314) that are interconnected. The height of the arc surface of the first slide (4311), the second slide (4312), the third slide (4313), and the fourth slide (4314) to the axis of the shaft hole decreases in sequence. The fourth slide (4314) is connected to the first slide (4311). The concave block (433) is located on the third slide (4313). The sliding rod (411) slides along the first slide (4311), the second slide (4312), and the third slide (4313) to the concave block (433). The cam body (43) rotates to control the sliding rod (411) to disengage from the concave block and slide along the fourth slide (4314) to the first slide (4311). When the latch (435) of the cam body (43) rotates under external force, the torsion spring (44) is simultaneously subjected to force and is in a torsional state. At this time, the second pull rod (41) slides forward along the arc surface of the sliding part (431). When the cam body (43) stops under external force, the cam body (43) rotates under the action of the torsion spring (44), and finally the second pull rod (41) stays in the concave latch (433). At this time, the door lock is in the closed state. When the latch (435) of the cam body (43) rotates under external force, the second pull rod (41) stops in the concave latch (433). 435) When the second lever (41) is rotated by external force again, it overcomes the torque of the torsion spring (44) and moves away from the concave block (433). At this time, the second lever (41) continues to slide forward along the arc surface on the other side of the sliding part (431). When the cam body (43) stops under the action of external force, the cam body (43) rotates under the action of the torsion spring (44), and finally the second lever (41) stops on the initial arc surface of the sliding part (431). At this time, the door lock is in the open state.

2. A push-button door lock according to claim 1, characterized in that, The bracket (42) includes a second limiting hole (420), and a guide post (12) is provided on the base (1). The top of the guide post (12) has a limiting cover (122), and a fifth spring (15) is provided on the guide post (12). The bracket (42) moves on the guide post (12) under the limiting cover (122) through the second limiting hole (420).

3. A push-button door lock according to claim 1, characterized in that, The other end of the second pull rod (41) is provided with a first limiting hole (412), and the bracket (42) is provided with a limiting block (421) that cooperates with the first limiting hole (412). The second pull rod (41) moves within the first limiting hole (412) through the limiting block (421).

4. A push-button door lock according to claim 3, characterized in that, A spring groove (16) is provided on the base (1), and a sixth spring (13) that moves up and down is provided in the spring groove (16). A spring seat (14) that pushes against the second pull rod (41) is provided above the sixth spring (13).

5. A push-button door lock according to claim 1, characterized in that, The mechanism (2) includes a housing (27), on which a first slider (21), a second slider (23) and a third slider (25) are slidably arranged in sequence. A first spring (22), a second spring (24) and a third spring (26) are respectively arranged at one end of the first slider (21), the second slider (23) and the third slider (25).

6. A push-button door lock according to claim 5, characterized in that, The third slider (25) is provided with a fitting part (251) that cooperates with the second slider (23).

7. A push-button door lock according to claim 5, characterized in that, A coil (275) is provided on the box (27), and a first terminal (278), a second terminal (277) and a third terminal (276) are respectively provided on the box (27), and the second terminal (277) and the third terminal (276) are electrically connected to the coil (275); The housing (27) has a movable piece (279) that cooperates with the first terminal (278) and the second terminal (277).

8. A push-button door lock according to claim 7, characterized in that, The box (27) is slidably connected to a fourth slider (272) that cooperates with the coil (275). The coil (275) drives the fourth slider (272) to cooperate with the third slider (25). The fourth slider (272) is slidably provided with a first pull rod (273) and a fourth spring (271) that pushes against the first pull rod (273). The fourth slider (272) is provided with a heart-shaped groove (274), and the first pull rod (273) slides within the heart-shaped groove (274).

9. A push-button door lock according to claim 8, characterized in that, The box (27) is slidably provided with a limiting member (270) that cooperates with the fourth slider (272), and the limiting member (270) cooperates with the moving piece (279).

10. A washing machine, characterized in that, Includes the push-button door lock as described in any one of claims 1 to 9.

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