Household appliance door lock

Abstract

The invention relates to the technical field of electronic door locks, and provides a household appliance door lock which comprises a packaging shell, a door hook rotationally installed on the packaging shell and a transmission module abutting against the rear end of the door hook, and the transmission module comprises an action sliding block, an elastic positioning element, a transmission assembly and a driving module; the driving module, the transmission assembly and the action sliding block which are linked in sequence are designed, the door hook is driven to rotate in the preset direction through bidirectional sliding control over the action sliding block, unlocking and unlocking are achieved, and the door lock has high durability and reliability and can stably work in various environments; meanwhile, an elastic positioning element which is in limited installation with the action sliding block is arranged, when the action sliding block reaches a specified unlocking position or a specified locking position, the sliding block is positioned by means of elastic potential energy of the elastic positioning element, and therefore the stability of the locking and unlocking states is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic door locks, and in particular to a door lock for household appliances. Background Art

[0002] An oven is a sealed appliance used to bake food or dry products. It is divided into household appliances and industrial ovens. Household ovens can be used to process some pasta. Industrial ovens are equipment used to dry products in industry. There are electric and gas ovens, also called ovens, drying boxes, etc.; they are usually divided into three-control automatic type (timing, temperature adjustment, power adjustment), temperature control timing type and ordinary simple type. For ordinary families, it is enough to choose a temperature control timing type, because this type has more complete functions and higher cost performance.

[0003] At present, some oven door locks on the market use a driver to push or pull the locking action slider in one direction, so that the door lock hook is fixed in a certain position by the locking action slider to lock or unlock the door. Due to the one-way push or pull, the mechanical emergency stop unlocking structure is a one-way reverse unlocking. Therefore, once the mechanical emergency stop unlocking structure is used, the locking action slider will be completely stuck from the other direction and cannot be automatically restored. The user or professional maintenance personnel are required to dismantle the household appliance or door lock for maintenance, which is difficult to operate and inconvenient.

[0004] At the same time, the door open and closed state determination, door locked and unlocked state determination, and circuit and electrical parts of the driving module of the common oven door lock are relatively independent, resulting in great manufacturing and cost waste.

[0005] Moreover, the lock hook of the traditional oven door is set on the side of the door. The single-sided lock hook will cause uneven force on the door body. When the oven is powered off, the door body cannot be opened. In addition, the existing door lock structure is complex and the cost is high. Summary of the invention

[0006] The present invention provides a household appliance door lock, which solves the technical problem that the existing door lock structure lacks an emergency unlocking function and the mechanical emergency stop unlocking structure cannot be automatically reset, resulting in a poor user experience of the device.

[0007] In order to solve the above technical problems, the present invention provides a household appliance door lock, comprising a packaging shell, a door hook rotatably mounted on the packaging shell, and a transmission module abutting against the rear end of the door hook, wherein the transmission module comprises an action slider, an elastic positioning element, a transmission assembly and a drive module; the front end of the action slider abuts against the rear end of the door hook, and the rear end thereof is connected to the transmission assembly, and the transmission assembly is mechanically connected to the drive module; the elastic positioning element is mounted on the packaging shell and is limitedly mounted with the action slider;

[0008] The driving module is started to drive the transmission module to work, pushing the action slider to slide to the front end, and the action slider lifts the rear end of the door hook. At this time, the elastic positioning element deforms to resist the action slider to move backward, so that the door hook rotates downward to buckle and complete the locking action;

[0009] The driving module is started to drive the transmission module to work, pushing the action slider to slide to the rear end, and the rear end of the door hook is lifted up after being separated from the support of the action slider. At this time, the elastic positioning element is deformed to resist the forward displacement of the action slider, so that the door hook rotates upward to unlock and maintain.

[0010] This basic solution designs a driving module, a transmission assembly, and an action slider that are linked in sequence. Through the bidirectional sliding control of the action slider, the door hook is driven to rotate in a preset direction to achieve unlocking and unlocking. The door lock has high durability and reliability and can work stably in various environments. At the same time, an elastic positioning element is provided with a limit installation on the action slider. When the action slider reaches a specified unlocking position or a specified locking position, the slider is positioned by relying on the elastic potential energy of the elastic positioning element, thereby ensuring the stability of the locked and unlocked states.

[0011] In a further embodiment, the action slider at least comprises a guide portion, a positioning portion and a connecting portion which are sequentially connected from front to back, the guide portion abuts against the rear end of the door hook, the elastic positioning element is movably mounted on the positioning portion, and the connecting portion is connected to the transmission assembly;

[0012] The front end of the guide portion is a horizontal unlocking surface, the middle portion is a sliding inclined surface formed by being raised backwards, and the rear end is a horizontal upper locking surface extending from the end of the sliding inclined surface, and the horizontal height of the upper locking surface is higher than the horizontal height of the unlocking surface;

[0013] When the action slider slides toward the front end, it pushes the door hook to rotate, so that the rear end of the door hook transitions from the unlocking surface along the sliding slope to the locking surface, so that the rear end of the door hook is lifted up and stuck on the locking surface. At this time, the front end of the door hook is buckled downward to complete the locking action.

[0014] The present invention creatively arranges a guide part, a positioning part and a connecting part which are connected in sequence from front to back, and utilizes the connecting part to receive power transmission from the driving module, thereby driving the guide part to lift the door hook or release the door hook, and by switching the horizontal height of the connecting surface between the guide part and the door hook, the door hook is rotated to a predetermined position to complete locking or unlocking. At this time, the positioning part is in a stable state due to the elastic positioning of the elastic positioning element, thereby ensuring that the guide part and the door hook are in a relatively stable state, maintaining a locked or unlocked state, providing a stronger locking force, and increasing the safety of the household appliance.

[0015] In a further embodiment, the bottom of the positioning portion is a connecting plate, and both ends are respectively provided with arc walls arched toward the middle to form a double-moon arc groove structure; the two ends of the elastic positioning element are fixed to the packaging shell, and the middle part is transversely embedded in the arc groove structure and deforms under the guidance of the arc wall on one side to abut against the arc wall on the other side, so as to limit the sliding of the action slider and keep the door hook in an unlocked or locked state;

[0016] A through hole is provided in the middle of the connecting portion to place the transmission assembly, and protruding locking teeth and unlocking teeth are provided at the edge of the through hole. The locking teeth, unlocking teeth and the transmission assembly are spatially limited. When the transmission assembly rotates until it is limited by the locking teeth, the locking teeth are pushed by force to drive the action slider to move forward as a whole to perform unlocking; when the transmission assembly rotates until it is limited by the unlocking teeth, the unlocking teeth are pushed by force to drive the action slider to move backward as a whole to perform locking.

[0017] In this solution, a double-moon-shaped arc groove structure is provided as a positioning part to cooperate with an elastic positioning element, and the elastic positioning element is embedded and installed in a compressed state. When the action slider slides to a locked or unlocked state, the arc surface wall on one side of the positioning part guides the elastic positioning element to deform in a directional manner, so that the elastic positioning element deforms and squeezes the arc surface wall on the other side so that the positioning part and the entire action slider are in a resisted positioning state, thereby maintaining a locked or unlocked state. Due to the state switching of the linkage elastic element, locking and unlocking are easier;

[0018] A through hole is set in the middle of the connecting part to place the transmission component, and further, raised locking teeth and unlocking teeth are set on the edge of the through hole. When the transmission component is rotated to limit the locking tooth, the locking tooth and the entire action slider are pushed to move backward as a whole to perform locking; when the transmission component is rotated to limit the unlocking tooth, the unlocking tooth and the entire action slider are pushed to move forward as a whole to perform unlocking, which simplifies the triggering of the locking and unlocking actions, further reduces the power of the driving module during locking and unlocking, and achieves the effect of energy saving and emission reduction.

[0019] In a further embodiment, it also includes an emergency unlocking push rod connected to the action slider, one end of the emergency unlocking push rod protrudes forward from the packaging shell, and the other end is backward connected to the guide part; a first limit block is provided at the front end of the emergency unlocking push rod.

[0020] This solution adds an emergency unlocking push rod connected to the action slider, with one end of the emergency unlocking push rod protruding forward from the packaging shell for emergency operation by the user, and the other end pointing to the guide part of the action slider. The action slider is pushed forward by manually pushing the emergency unlocking push rod, so that the door hook slides from the locking surface to the unlocking surface to achieve emergency unlocking. The operation is convenient and the structure is simple, which greatly facilitates the emergency operation of users and professionals. When the door lock is powered on again, the system can be self-recovered through the coordinated work of the drive module and the connection part.

[0021] In a further embodiment, an action detection module is further included, wherein the action detection module includes a first micro switch, wherein an action reed of the first micro switch points to the action slider;

[0022] The action slider also includes a detection portion arranged between the guide portion and the positioning portion, wherein the front end of the detection portion is concave downward, the middle portion is inclined and raised backward, and the rear end extends horizontally;

[0023] The action slider moves forward, so that the action reed of the first micro switch is compressed by the rear end of the detection part, and the first micro switch feedback is that it is currently in the unlocked state; the action slider moves backward, so that the action reed of the first micro switch enters the front end along the inclined surface in the middle part of the detection part, and then the action reed of the first micro switch is released from the compression of the detection part, and the first micro switch feedback is that it is currently in the locked state.

[0024] This solution sets up an action detection module based on the first microswitch, and arranges the action reed of the first microswitch to point to the action slider. At the same time, the detection part that cooperates with the first microswitch is arranged. Because when the action slider is locked and unlocked, the relative states of the detection part and the action reed of the first microswitch are release and compression respectively. Therefore, the current door lock state can be directly judged by obtaining the output of the first microswitch, thereby realizing intelligent control.

[0025] In a further embodiment, a door detection module is further included, the door detection module comprising a sensing slider, a sensing elastic element and a second micro switch; one end of the sensing slider is placed outside the packaging shell corresponding to the door buckle, and the other end is sleeved with the sensing elastic element and points to the lower part of the second micro switch, and the action reed of the second micro switch points downward to the sensing slider; one end of the sensing elastic element is limited by the sensing slider, and the other end is limited by the packaging shell, so as to give the sensing slider a force to pop out through elastic deformation;

[0026] The door catch presses the sensing slider backwards to point to the second micro switch, the action reed of the second micro switch is compressed, and the second micro switch feedbacks that the door is currently in a closed state;

[0027] The door catch moves away from the sensing slider, and the sensing slider moves forward under the action of the sensing slider. The action reed of the second micro switch is separated from the pressure of the sensing slider, and the second micro switch feedbacks that the door is currently in the open state.

[0028] This solution sets up a second micro switch, a sensing slider, and a sensing elastic element to realize the door opening / closing detection mechanism. Through automatic monitoring, the switch status of the cabinet door can be monitored in real time, which can reduce the errors caused by human operation and ensure the accurate recording and management of the usage status of household appliances.

[0029] In a further embodiment, the front end of the sensing slider is bent downward to form a gear position that cooperates with the door buckle, the middle part is a mounting part that is slidably connected to the packaging shell, and the rear end is set to be a crossbar pointing to the second micro switch; the front end of the mounting part is first bent horizontally, the middle part extends backward, and the rear end extends upward to slide into the packaging shell;

[0030] The mounting portion slides along a predetermined track on the packaging shell, thereby driving the cross bar to press or move away from the action reed of the second micro switch.

[0031] The front end of the sensing middle slider of the present solution is bent downward and a gear is provided at the end to engage with the door buckle to accurately position the door buckle; at the same time, the front end of the mounting part is first bent horizontally to limit the horizontal position to prevent the sensing slider from escaping from the packaging shell, and the rear end of the mounting part extends upward and slides into the packaging shell to guide the sensing slider to slide along a predetermined trajectory, thereby improving the stability of the device.

[0032] In a further embodiment, the front end of the door hook is bent downward to form a buckle position, a rotating shaft extending to both sides is provided in the middle, and the rear end extends backward to be connected to the action slider, and the rotating shaft is rotatably installed on the packaging shell through a torsion spring.

[0033] The door hook in this solution rotates around the rotating shaft. The rotating door hook door lock is simple in design and easy to operate, and is suitable for occasions where the door needs to be opened and closed frequently.

[0034] In a further embodiment, the transmission assembly includes at least a transmission gear and an action gear. The transmission gear is rotatably connected to the drive module and meshes with the action gear. The action gear is located in the through hole of the connecting part, and a convex tooth protruding outward is provided at its lower part. The convex tooth is spatially limited by the locking tooth and the unlocking tooth.

[0035] This solution is based on the conventional gear transmission design. A convex tooth protruding outward is set on the action gear that cooperates with the connecting part. The convex tooth and the locking tooth and unlocking tooth are used to limit the space. The connecting part and the entire action slider are pushed forward and backward to achieve locking and unlocking. The structure is simple and the power consumption is low.

[0036] In a further embodiment, the packaging shell includes an upper cover and a lower cover covering each other;

[0037] The elastic positioning element is installed laterally on the shaft holes on both sides of the front end of the upper cover and the inner side of the middle part, and the rotating shaft of the door hook is rotatably installed in the shaft hole through a torsion spring; the top surface of the inner cavity of the upper cover is also provided with a horizontal slide groove that is concave upwards, and the sensing slider is embedded in the horizontal slide groove;

[0038] A support platform is provided at the opening of the bottom surface of the lower cover, and the sensing slider is carried on the support platform; an inwardly arched limiting wall is provided on one side of the lower cover, and the limiting wall is used to limit the inward sliding of the guide part and stop at an unlocked state.

[0039] The present invention provides a packaging shell with upper and lower covers for device assembly, so that the door lock is integrated and easy to install, and can effectively protect the internal parts of the door lock, thereby extending the service life of the door lock. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is an exploded view of a household appliance door lock provided by Embodiment 1 of the present invention;

[0041] Figure 2 The embodiment 1 of the present invention provides Figure 1 Assembly diagram of

[0042] Figure 3 The embodiment 1 of the present invention provides Figure 2 Rear view of

[0043] Figure 4 The embodiment 1 of the present invention provides Figure 1 A three-dimensional structural diagram of the action slider;

[0044] Figure 5 This is a schematic diagram of the unlocking state provided by Embodiment 1 of the present invention;

[0045] Figure 6 This is a schematic diagram of a locked state provided by Embodiment 1 of the present invention;

[0046] Figure 7 It is a partial structural schematic diagram provided by Example 1 of the present invention;

[0047] Figure 8 is a three-dimensional structural diagram of the connecting portion and the action gear provided in Example 1 of the present invention;

[0048] Fig. 9 The embodiment 1 of the present invention provides Figure 1 The three-dimensional structure diagram of the middle upper cover;

[0049] Fig.10It is a three-dimensional structural diagram of unlocking and locking a household appliance door lock provided by Embodiment 2 of the present invention;

[0050] Fig.11 Embodiment 2 of the present invention provides Fig.10 The three-dimensional structure diagram of the middle door hook and the sensing slider;

[0051] Fig.12 This is a schematic diagram of the unlocking state provided by Embodiment 2 of the present invention;

[0052] Fig.13 This is a schematic diagram of a locked state provided by Embodiment 2 of the present invention;

[0053] Fig.14 It is a schematic diagram of electrical connection of the driving module B, the first micro switch A1, and the second micro switch 63 in the integrated circuit board provided in embodiments 1 and 2 of the present invention;

[0054] Fig.15 This is a schematic diagram of electrical connection in which the first micro switch A1 and the second micro switch 63 provided in embodiments 1 and 2 of the present invention share a common live wire or neutral wire;

[0055] Among them: motion detection module A; drive module B; integrated circuit board C; torsion spring D;

[0056] Door hook 1, rotating shaft 11; action slider 2, guide part 21, detection part 22, positioning part 23, connecting part 24; transmission assembly 3, transmission gear 31, action gear 32; elastic positioning element 4; emergency unlocking push rod 5, first limit block 51; door detection module 6, sensing slider 61, sensing elastic element 62, second micro switch 63; upper cover 7, shaft hole 71, horizontal slide groove 72, first buckle 73, second buckle 74, third buckle 75; lower cover 8, support platform 81, limit wall 82, first clamping position 83, second clamping position 84, third clamping position 85;

[0057] Unlocking surface 211, sliding inclined surface 212, locking surface 213;

[0058] Connecting plate 231, arc wall 232;

[0059] Through hole 241, upper locking tooth 242, unlocking tooth 243;

[0060] protruding teeth 321;

[0061] Shift position 611, mounting portion 612, cross bar 613; first micro switch A1. DETAILED DESCRIPTION

[0062] The following specifically illustrates the implementation mode of the present invention in conjunction with the accompanying drawings. The embodiments are provided for illustrative purposes only and cannot be understood as limiting the present invention. The accompanying drawings are provided for reference and illustration only and do not constitute a limitation on the scope of patent protection of the present invention, because many changes can be made to the present invention without departing from the spirit and scope of the present invention.

[0063] Example 1

[0064] An embodiment of the present invention provides a household appliance door lock, such as Figures 1 to 9 As shown, in this embodiment, it includes a packaging shell, a door hook 1 rotatably mounted on the packaging shell, and a transmission module abutting against the rear end of the door hook 1, and the transmission module includes an action slider 2, an elastic positioning element 4, a transmission assembly 3 and a drive module B; the front end of the action slider 2 abuts against the rear end of the door hook 1, and its rear end is connected to the transmission assembly 3, and the transmission assembly 3 is mechanically connected to the drive module B; the elastic positioning element 4 is installed on the packaging shell and is limitedly installed with the action slider 2;

[0065] See also Figure 5 , Figure 6 , start the driving module B to drive the transmission module to work, push the action slider 2 to slide to the front end, and the action slider 2 lifts the rear end of the door hook 1. At this time, the elastic positioning element 4 deforms to resist the action slider 2 to move backward, so that the door hook 1 rotates downward to buckle and complete the locking action;

[0066] The driving module B is started to drive the transmission module to work, pushing the action slider 2 to slide to the rear end, and the rear end of the door hook 1 is lifted up after being separated from the support of the action slider 2. At this time, the elastic positioning element 4 is deformed to resist the forward displacement of the action slider 2, so that the door hook 1 rotates upward to unlock and maintain.

[0067] In this embodiment, an integrated circuit board C is also included, and the integrated circuit board C is electrically connected to the driving module B, the first micro switch A1, and the second micro switch 63, and is used to issue locking and unlocking instructions, and to collect the states of locking, unlocking, opening, and closing the door.

[0068] Wherein, the driving module B includes but is not limited to an electromagnetic coil and a wax motor.

[0069] In this embodiment, see Fig.14 According to the requirements, the second micro switch 63, the first micro switch A1 and the circuit part of the driving module B can be integrated on an integrated printed circuit board C to facilitate the circuit connection of the household appliance.

[0070] Preferably, the integrated circuit board C in this embodiment is configured to store a door lock safety mode. Specifically, when the second microswitch 63 is not triggered, that is, when the household appliance door is not closed, even if the first microswitch A1 is triggered by mistake or when it is triggered, human error occurs, causing the door lock to be in a locked state, the household appliance cannot start working, which is safer.

[0071] For further information, see Fig.15 Based on the low-cost setting, the first micro switch A1 and the second micro switch 63 share a common live wire or neutral wire, thereby greatly saving manufacturing and production costs.

[0072] In this embodiment, see Figure 4 The action slider 2 at least includes a guide portion 21, a positioning portion 23 and a connecting portion 24 connected in sequence from front to back, the guide portion 21 abuts against the rear end of the door hook 1, the elastic positioning element 4 is movably mounted on the positioning portion 23, and the connecting portion 24 is connected to the transmission assembly 3;

[0073] The front end of the guide portion 21 is a horizontal unlocking surface 211, the middle portion is a sliding inclined surface 212 raised backwards, and the rear end is a horizontal upper locking surface 213 extending from the end of the sliding inclined surface 212. The level of the upper locking surface 213 is higher than that of the unlocking surface 211.

[0074] When the action slider 2 slides toward the front end, it pushes the door hook 1 to rotate, so that the rear end of the door hook 1 transitions from the unlocking surface 211 along the sliding slope 212 to the locking surface 213, so that the rear end of the door hook 1 is lifted up and stuck on the locking surface 213. At this time, the front end of the door hook 1 is buckled downward to complete the locking action.

[0075] The present embodiment creatively arranges a guide portion 21, a positioning portion 23 and a connecting portion 24 which are sequentially connected from front to back, and utilizes the connecting portion 24 to receive the power transmission of the driving module B, thereby driving the guide portion 21 to lift up the door hook 1 or release the door hook 1, and by switching the horizontal height of the connecting surface between the guide portion 21 and the door hook 1, the door hook 1 is rotated to a predetermined position to complete locking or unlocking. At this time, the positioning portion 23 is in a stable state under the elastic positioning of the elastic positioning element 4, thereby ensuring that the guide portion 21 and the door hook 1 are in a relatively stable state, maintaining the locked or unlocked state, providing a stronger locking force, and increasing the safety of the household appliance.

[0076] In this embodiment, the bottom of the positioning portion 23 is a connecting plate 231, and both ends are respectively provided with arc walls 232 arched toward the middle to form a double-moon arc groove structure; the two ends of the elastic positioning element 4 are fixed to the packaging shell, and the middle part is transversely embedded in the arc groove structure, and then deformed under the guidance of the arc wall 232 on one side to abut against the arc wall 232 on the other side, so as to limit the sliding of the action slider 2 and keep the door hook 1 in an unlocked or locked state;

[0077] A through hole 241 is provided in the middle of the connecting portion 24 to place the transmission component 3, and a protruding upper locking tooth 242 and an unlocking tooth 243 are provided on the edge of the through hole 241. The upper locking tooth 242 and the unlocking tooth 243 are spatially limited with the transmission component 3. The transmission component 3 rotates until it is limited by the upper locking tooth 242, and the upper locking tooth 242 is pushed by force to drive the action slider 2 to move forward as a whole to perform unlocking; the transmission component 3 rotates until it is limited by the unlocking tooth 243, and the unlocking tooth 243 is pushed by force to drive the action slider 2 to move backward as a whole to perform locking.

[0078] Specifically, the upper locking tooth 242 is located at the front end of the through hole 241, and its tooth surface points to the rear end of the through hole 241. When the transmission component 3 (i.e., the convex tooth 321 on the action gear 32) rotates to contact the tooth surface of the upper locking tooth 242, the action slider 2 will be pushed forward as a whole due to the limit. When the rear end of the door hook 1 is lifted up and stuck on the upper locking surface 213, the upper locking tooth 242 moves forward to disengage from the limit of the transmission component 3, and the action slider 2 stops sliding.

[0079] The unlocking tooth 243 is located at the rear end of the through hole 241, and its tooth surface points to the front end of the through hole 241. When the transmission component 3 (i.e. the convex tooth 321 on the action gear 32) rotates to contact the tooth surface of the unlocking tooth 243, the action slider 2 will be pushed to slide backward as a whole due to the limit. When the rear end of the door hook 1 is released to the unlocking surface 211, the unlocking tooth 243 retreats and disengages from the limit of the transmission component 3, and the action slider 2 stops sliding.

[0080] In this embodiment, a double-moon-shaped arc groove structure is provided as the positioning portion 23 to cooperate with the elastic positioning element 4, and the elastic positioning element 4 is embedded and installed in a compressed state. When the action slider 2 slides to the locked or unlocked state, the arc wall 232 on one side of the positioning portion 23 guides the elastic positioning element 4 to deform in a directional manner, so that the elastic positioning element 4 deforms and squeezes the arc wall 232 on the other side, so that the positioning portion 23 and the entire action slider 2 are in a resisted positioning state, thereby maintaining the locked or unlocked state. Due to the state switching of the linkage elastic element, locking and unlocking are easier;

[0081] A through hole 241 is provided in the middle of the connecting portion 24 to place the transmission component 3, and further, raised locking teeth 242 and unlocking teeth 243 are provided on the edges of the through hole 241. When the transmission component 3 is rotated to limit the locking tooth 242, the locking tooth 242 and the entire action slider 2 are pushed to move backward as a whole to perform locking; when the transmission component 3 is rotated to limit the unlocking tooth 243, the unlocking tooth 243 and the entire action slider 2 are pushed to move forward as a whole to perform unlocking, which simplifies the triggering of the locking and unlocking actions, further reduces the power of the driving module B during locking and unlocking, and achieves the effect of energy saving and emission reduction.

[0082] In this embodiment, an emergency unlocking push rod 5 connected to the action slider 2 is also included, one end of the emergency unlocking push rod 5 protrudes forward from the packaging shell, and the other end is connected backward to the guide part 21; a first limit block 51 is provided at the front end of the emergency unlocking push rod 5.

[0083] The first limit block 51 can not only be used to provide an operating position for the user, but also be used to prevent the emergency unlocking push rod 5 from sinking into the packaging shell.

[0084] Among them, the emergency unlocking push rod 5 can be set as a structure integrated with the action slider 2 according to needs, or set as a structure independent of the action slider 2, which is not limited in this embodiment.

[0085] The present embodiment adds an emergency unlocking push rod 5 connected to the action slider 2, and one end of the emergency unlocking push rod 5 is extended forward out of the packaging shell for emergency operation by the user, and the other end points to the guide portion 21 of the action slider 2. The action slider 2 is pushed forward by manually pushing the emergency unlocking push rod 5, so that the door hook 1 slides from the locking surface 213 to the unlocking surface 211, thereby realizing emergency unlocking. The operation is convenient and the structure is simple, which greatly facilitates the emergency operation of users and professionals. When the door lock is powered on again, the system self-recovery can be realized through the coordinated work of the driving module B and the connecting portion 24.

[0086] In this embodiment, an action detection module A is further included. The action detection module A includes a first micro switch A1. The action reed of the first micro switch A1 points to the action slider 2.

[0087] The action slider 2 also includes a detection portion 22 disposed between the guide portion 21 and the positioning portion 23, wherein the front end of the detection portion 22 is concave downward, the middle portion is inclined and raised backward, and the rear end extends horizontally;

[0088] The action slider 2 moves forward, so that the action reed of the first microswitch A1 is pressed by the rear end of the detection part 22, and the first microswitch A1 feedbacks that it is currently in the unlocked state; the action slider 2 moves backward, so that the action reed of the first microswitch A1 enters the front end along the inclined surface in the middle part of the detection part 22, and then the action reed of the first microswitch A1 is released from the pressure of the detection part 22, and the first microswitch A1 feedbacks that it is currently in the locked state.

[0089] In this embodiment, an action detection module A based on the first microswitch A1 is arranged, and the action reed of the first microswitch A1 is arranged to point to the action slider 2. At the same time, the detection part 22 that cooperates with the first microswitch A1 is arranged. Because when the action slider 2 is in the locked and unlocked states, the relative states of the detection part 22 and the action reed of the first microswitch A1 are release and compression respectively, the current door lock state can be directly determined by obtaining the output of the first microswitch A1, thereby realizing intelligent control.

[0090] In this embodiment, a door detection module 6 is also included, and the door detection module 6 includes a sensing slider 61, a sensing elastic element 62 and a second micro switch 63; one end of the sensing slider 61 is placed outside the packaging shell and corresponds to the door buckle, and the other end is sleeved with the sensing elastic element 62 and points to the lower part of the second micro switch 63, and the action reed of the second micro switch 63 points downward to the sensing slider 61; one end of the sensing elastic element 62 is limited by the sensing slider 61, and the other end is limited by the packaging shell, so as to give the sensing slider 61 a force to pop out through elastic deformation;

[0091] The door catch presses the sensing slider 61 backwards to point to the second micro switch 63, the action reed of the second micro switch 63 is compressed, and the second micro switch 63 feedbacks that it is currently in the closed state;

[0092] The door catch moves away from the sensing slider 61, and the sensing slider 61 moves forward under the action of the sensing slider 61, the action reed of the second micro switch 63 is separated from the pressure of the sensing slider 61, and the second micro switch 63 feedbacks that it is currently in the door opening state.

[0093] In this embodiment, a second micro switch 63, a sensing slider 61, and a sensing elastic element 62 are provided to realize a door opening / closing detection mechanism. Through automatic monitoring, the switch status of the cabinet door can be monitored in real time, which can reduce errors caused by human operation and ensure accurate recording and management of the use status of household appliances.

[0094] Among them, the elastic positioning element 4 and the sensing elastic element 62 are preferably springs.

[0095] In this embodiment, the front end of the sensing slider 61 is bent downward to form a stop 611 that matches the door catch, the middle part is a mounting part 612 that is slidably connected to the packaging shell, and the rear end is set as a crossbar 613 pointing to the second micro switch 63; the front end of the mounting part 612 is first bent horizontally, the middle part extends backward, and the rear end extends upward to slide into the packaging shell;

[0096] The mounting portion 612 slides along a predetermined track on the packaging shell, thereby driving the cross bar 613 to press or move away from the action reed of the second micro switch 63 .

[0097] See also Figure 1 For example, the gear position 611 is a concave structure.

[0098] In the present embodiment, the front end of the sensing middle slider is bent downward and a stop 611 is provided at the end to engage with the door buckle to accurately position the door buckle; at the same time, the front end of the mounting portion 612 is first bent horizontally to limit the horizontal position to prevent the sensing slider 61 from escaping from the packaging shell, and the rear end of the mounting portion 612 extends upward and slides into the packaging shell to guide the sensing slider 61 to slide along a predetermined trajectory, thereby improving the stability of the device.

[0099] In this embodiment, the front end of the door hook 1 is bent downward to form a buckle position, and a rotating shaft 11 extending to both sides is provided in the middle, and the rear end extends backward to be connected to the action slider 2. The rotating shaft 11 is rotatably installed on the packaging shell through a torsion spring D.

[0100] The door hook 1 in this embodiment rotates around the rotating shaft 11. The rotating door hook 1 door lock has a simple design and is easy to operate, and is suitable for occasions where the door needs to be opened and closed frequently.

[0101] In this embodiment, see Figure 8 The transmission assembly 3 at least includes a transmission gear 31 and an action gear 32. The transmission gear 31 is rotationally connected to the driving module B and meshes with the action gear 32. The action gear 32 is located in the through hole 241 of the connecting portion 24, and a convex tooth 321 protruding outward is provided at its lower portion. The convex tooth 321 is spatially limited by the upper locking tooth 242 and the unlocking tooth 243.

[0102] This embodiment is based on a conventional gear transmission design. A convex tooth 321 protruding outward is provided on the action gear 32 that cooperates with the connecting part 24. The convex tooth 321 is spatially limited by the locking tooth 242 and the unlocking tooth 243. The connecting part 24 and the entire action slider 2 are pushed forward and backward to achieve locking and unlocking. The structure is simple and the power consumption is low.

[0103] In this embodiment, the packaging shell includes an upper cover 7 and a lower cover 8 that cover each other;

[0104] The elastic positioning element 4 is installed laterally on the shaft holes 71 on both sides of the front end of the upper cover 7 and the inner side of the middle part, and the rotating shaft 11 of the door hook 1 is rotatably installed in the shaft hole 71 through the torsion spring D; the top surface of the inner cavity of the upper cover 7 is also provided with a horizontal slide groove 72 that is concave upwards, and the sensing slider 61 is embedded in the horizontal slide groove 72;

[0105] A support platform 81 is provided at the bottom opening of the lower cover 8, and the sensing slider 61 is carried on the support platform 81; an inwardly arched limiting wall 82 is provided on one side of the lower cover 8, and the limiting wall 82 is used to limit the inward sliding of the guide part 21 and stop at the unlocked state.

[0106] In this embodiment, a packaging shell with upper and lower covers 8 is provided for device assembly, so that the door lock is integrated and easy to install, and the internal parts of the door lock can be effectively protected, thereby extending the service life of the door lock.

[0107] See also Fig. 9 The upper cover 7 is provided with first buckles 73 on both sides of the front end, a second buckle 74 on the inner side of the middle part, and a third buckle 75 on the outer side wall of the rear end; the first buckle 73 is a vertical plate extending downward, and a buckle position protruding outward is provided at the bottom of the outer side wall of the vertical plate; the second buckle 74 and the third buckle 75 are both U-shaped buckles extending downward;

[0108] The front end top surface of the lower cover 8 opens downward to form a first latching position 83 that engages with the first buckle 73, the middle inner wall horizontally protrudes to form a second latching position 84 that engages with the second buckle 74, and the rear end outer wall is provided with a buckle position protruding outward to form a third latching position 85 that engages with the third buckle 75.

[0109] Among them, the first buckle 73 and the first clamping position 83, the second buckle 74 and the second clamping position 84, and the third buckle 75 and the third clamping position 85 are divided into three different buckling forms. Through multiple internal and external buckling, the installation stability of the upper cover 7 and the lower cover 8 can be improved.

[0110] The embodiment of the present invention is designed to sequentially link a driving module B, a transmission assembly 3, and an action slider 2. By controlling the bidirectional sliding of the action slider 2, the door hook 1 is driven to rotate in a preset direction to achieve unlocking and unlocking. The door lock has high durability and reliability and can work stably in various environments. At the same time, an elastic positioning element 4 is provided which is limitedly installed with the action slider 2. When the action slider 2 reaches a specified unlocking position or a specified locking position, the slider is positioned by relying on the elastic potential energy of the elastic positioning element 4, thereby ensuring the stability of the locked and unlocked states.

[0111] Example 2

[0112] An embodiment of the present invention provides a household appliance door lock, such as Figure 10 to Figure 13As shown, in this embodiment, the difference between this embodiment and embodiment 1 lies in the structures of the door hook 1 and the sensing slider 61.

[0113] See also Fig.11 One end of the door hook 1 is a plate surface with a bent hook, and the other end is a supporting block connected to the action slider 2; the gear position 611 is a bent plate surface.

[0114] In this embodiment, the corresponding door hook 1 and sensing slider 61 can be set according to the actual locking structure of the door lock and the door, and this embodiment does not impose any limitation.

[0115] in, Fig.10 Figure I and Figure II in the figure are door locks in unlocked and locked states respectively.

[0116] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A household appliance door lock, characterized in that: It comprises a packaging shell, a door hook rotatably mounted on the packaging shell, and a transmission module abutting against the rear end of the door hook, wherein the transmission module comprises an action slider, an elastic positioning element, a transmission assembly and a drive module; the front end of the action slider abuts against the rear end of the door hook, and the rear end thereof is connected to the transmission assembly, and the transmission assembly is mechanically connected to the drive module; the elastic positioning element is mounted on the packaging shell and is limitedly mounted with the action slider; The driving module is started to drive the transmission module to work, pushing the action slider to slide to the front end, and the action slider lifts the rear end of the door hook. At this time, the elastic positioning element deforms to resist the action slider to move backward, so that the door hook rotates downward to buckle and complete the locking action; The driving module is started to drive the transmission module to work, pushing the action slider to slide to the rear end, and the rear end of the door hook is lifted up after being separated from the support of the action slider. At this time, the elastic positioning element is deformed to resist the forward displacement of the action slider, so that the door hook rotates upward to unlock and maintain.

2. A household appliance door lock as claimed in claim 1, characterized in that: The action slider at least comprises a guide portion, a positioning portion and a connecting portion which are sequentially connected from front to back, the guide portion abuts against the rear end of the door hook, the elastic positioning element is movably mounted on the positioning portion, and the connecting portion is connected to the transmission assembly; The front end of the guide portion is a horizontal unlocking surface, the middle portion is a sliding inclined surface formed by being raised backwards, and the rear end is a horizontal upper locking surface extending from the end of the sliding inclined surface, and the horizontal height of the upper locking surface is higher than the horizontal height of the unlocking surface; When the action slider slides toward the front end, it pushes the door hook to rotate, so that the rear end of the door hook transitions from the unlocking surface along the sliding slope to the locking surface, so that the rear end of the door hook is lifted up and stuck on the locking surface. At this time, the front end of the door hook is buckled downward to complete the locking action.

3. A household appliance door lock as claimed in claim 2, characterized in that: The bottom of the positioning part is a connecting plate, and both ends are respectively provided with arc walls arched toward the middle to form a double-moon arc groove structure; the two ends of the elastic positioning element are fixed to the packaging shell, and the middle part is transversely embedded in the arc groove structure, and then deformed under the guidance of the arc wall on one side to abut against the arc wall on the other side, so as to limit the sliding of the action slider and keep the door hook in an unlocked or locked state; A through hole is provided in the middle of the connecting portion to place the transmission assembly, and protruding locking teeth and unlocking teeth are provided at the edge of the through hole. The locking teeth, unlocking teeth and the transmission assembly are spatially limited. When the transmission assembly rotates until it is limited by the locking teeth, the locking teeth are pushed by force to drive the action slider to move forward as a whole to perform unlocking; when the transmission assembly rotates until it is limited by the unlocking teeth, the unlocking teeth are pushed by force to drive the action slider to move backward as a whole to perform locking.

4. A household appliance door lock as claimed in claim 3, characterized in that: It also includes an emergency unlocking push rod connected to the action slider, one end of the emergency unlocking push rod protrudes forward from the packaging shell, and the other end is connected to the guide part backward; a first limit block is provided at the front end of the emergency unlocking push rod.

5. A household appliance door lock as claimed in claim 4, characterized in that: It also includes an action detection module, the action detection module includes a first micro switch, and the action reed of the first micro switch points to the action slider; The action slider also includes a detection portion arranged between the guide portion and the positioning portion, wherein the front end of the detection portion is concave downward, the middle portion is inclined and raised backward, and the rear end extends horizontally; The action slider moves forward, so that the action reed of the first micro switch is compressed by the rear end of the detection part, and the first micro switch feedback is that it is currently in the unlocked state; the action slider moves backward, so that the action reed of the first micro switch enters the front end along the inclined surface in the middle part of the detection part, and then the action reed of the first micro switch is released from the compression of the detection part, and the first micro switch feedback is that it is currently in the locked state.

6. A household appliance door lock as claimed in claim 5, characterized in that: The door detection module further includes a sensing slider, a sensing elastic element, and a second micro switch; one end of the sensing slider is placed outside the packaging shell and corresponds to the door catch, and the other end is sleeved with the sensing elastic element and points to the lower part of the second micro switch, and the action reed of the second micro switch points downward to the sensing slider; one end of the sensing elastic element is limited by the sensing slider, and the other end is limited by the packaging shell, so as to give the sensing slider a force to pop out through elastic deformation; The door catch presses the sensing slider backwards to point to the second micro switch, the action reed of the second micro switch is compressed, and the second micro switch feedbacks that the door is currently in a closed state; The door catch moves away from the sensing slider, and the sensing slider moves forward under the action of the sensing slider. The action reed of the second micro switch is separated from the pressure of the sensing slider, and the second micro switch feedbacks that the door is currently in the open state.

7. A household appliance door lock as claimed in claim 6, characterized in that: The front end of the sensing slider is bent downward to form a gear position that matches the door buckle, the middle part is a mounting part that is slidably connected to the packaging shell, and the rear end is set to be a crossbar pointing to the second micro switch; the front end of the mounting part is first bent horizontally, the middle part extends backward, and the rear end extends upward to slide and insert into the packaging shell; The mounting portion slides along a predetermined track on the packaging shell, thereby driving the cross bar to press or move away from the action reed of the second micro switch.

8. A household appliance door lock as claimed in claim 7, characterized in that: The front end of the door hook is bent downward to form a buckle position, a rotating shaft extending to both sides is provided in the middle, and the rear end extends backward to be connected with the action slider, and the rotating shaft is rotatably installed on the packaging shell through a torsion spring.

9. A household appliance door lock as claimed in claim 3, characterized in that: The transmission assembly at least includes a transmission gear and an action gear. The transmission gear is rotationally connected to the driving module and meshes with the action gear. The action gear is located in the through hole of the connecting portion, and a convex tooth protruding outward is provided at its lower portion. The convex tooth is spatially limited by the locking tooth and the unlocking tooth.

10. A household appliance door lock as claimed in claim 8, characterized in that: The packaging shell comprises an upper cover and a lower cover that cover each other; The elastic positioning element is installed transversely on the shaft holes on both sides of the front end of the upper cover and the inner side of the middle part, and the rotating shaft of the door hook is rotatably installed in the shaft hole through a torsion spring; the top surface of the inner cavity of the upper cover is also provided with a horizontal slide groove that is concave upwards, and the sensing slider is embedded in the horizontal slide groove; A support platform is provided at the opening of the bottom surface of the lower cover, and the sensing slider is carried on the support platform; an inwardly arched limiting wall is provided on one side of the lower cover, and the limiting wall is used to limit the inward sliding of the guide part and stop at an unlocked state.

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