CN220769152U - Household appliance - Google Patents

Abstract

The present utility model relates to a household appliance comprising: a case; a door; a door lock mechanism comprising: a telescopic rod; the driving unit drives the telescopic rod to extend up and down; the top surface of the sliding block is concavely provided with a locking groove; the sliding block is arranged at the telescopic opening in a sliding manner, and can retract into the telescopic opening under the action of external force; the reset spring drives the sliding block to slide to the outer side of the telescopic opening, so that the sliding block can extend out of the telescopic opening; when the box door is closed, the telescopic rod and the locking groove are vertically and oppositely arranged, and the driving unit can drive the telescopic rod to move downwards, so that the telescopic rod is clamped in the locking groove to lock the box door; and the driving unit can drive the telescopic rod to move upwards, so that the telescopic rod is separated from the locking groove to unlock the box door, and the automatic locking and automatic unlocking functions of the box door are realized. The proposal has compact structure, is beneficial to simplifying the structure of the door lock mechanism and reduces the production cost.

Description

Household appliance

Technical Field

The utility model relates to the technical field of electric appliances, in particular to a household appliance.

Background

With the development of technology, household appliances such as ovens and dish washers are becoming more popular. With the improvement of living standard, the performance requirements of people on household appliances such as ovens, dish washers and the like are also higher and higher.

Currently, in related household appliances, the household appliances generally include a box body and a door disposed at the front side of the box body, when the door of the household appliance is closed, a door locking mechanism is generally required to be used for locking the door, so as to prevent the door from being opened by misoperation in the cooking process, and the door is unlocked through the door locking mechanism after the cooking is finished. However, in the existing household appliances, the door locking mechanism mostly needs to manually lock or unlock the door, and some automatic door locking mechanisms are also available, but the structure is mostly complex and the cost is high.

Disclosure of Invention

The utility model aims to provide a household appliance, so as to optimize the door structure of the household appliance in the related technology, realize automatic locking or unlocking of the door and reduce the cost.

In order to solve the technical problems, the utility model adopts the following technical scheme:

according to one aspect of the present utility model, there is provided a home appliance including: a case forming a housing outside the home appliance; an inner cavity is formed in the box body, and an opening communicated with the inner cavity is formed in the front side of the box body; the box door is arranged at the front side of the box body and is used for opening and closing the opening; the top surface of the box door is provided with a telescopic opening; a door lock mechanism for locking or unlocking the door, the door lock mechanism comprising: the telescopic rod is movably arranged above the telescopic opening; the driving unit is arranged in the box body, is connected with the telescopic rod and is used for driving the telescopic rod to extend and retract up and down; the sliding block is slidably arranged at the telescopic opening, and a locking groove is concavely formed in the top surface of the sliding block; the sliding block can slide towards the inner side of the telescopic opening under the action of external force, so that the sliding block is retracted into the telescopic opening; the return spring is connected with the sliding block and can drive the sliding block to slide towards the outer side of the telescopic opening so that the sliding block protrudes out of the telescopic opening; when the opening is closed by the box door, the telescopic rod and the locking groove are vertically and oppositely arranged, and the driving unit can drive the telescopic rod to move downwards, so that the bottom end of the telescopic rod is clamped in the locking groove to lock the box door; and the driving unit can drive the telescopic rod to move upwards, so that the bottom end of the telescopic rod is separated from the locking groove, and the door is unlocked.

In some embodiments of the present application, a guiding inclined plane is disposed on a side of the top of the slider, which faces the box, and the guiding inclined plane extends obliquely upwards in a direction away from the box; in the process of closing the box door, the guide inclined plane can prop against the bottom end of the telescopic rod, so that the sliding block can slide towards the inner side of the telescopic opening under the extrusion action of the telescopic rod.

In some embodiments of the present application, a guiding post extending downward is protruding from the bottom of the sliding block, and the extending direction of the guiding post is consistent with the sliding direction of the sliding block; the box door is internally provided with a guide sliding hole which is arranged opposite to the guide column, and the lower end of the guide column is slidably inserted into the guide sliding hole.

In some embodiments of the present application, a limiting plate is disposed in the box door, the limiting plate is disposed below the telescopic opening at intervals, and the guiding slide Kong Kaishe is on the limiting plate; the lower end of the guide post movably penetrates through the guide sliding hole; the reset spring is sleeved on the periphery of the guide post, the top end of the reset spring is propped against the bottom of the sliding block, and the bottom end of the reset spring is propped against the limiting plate.

In some embodiments of the present application, a limiting rib disposed around the telescopic opening is disposed in the door, and the limiting rib is formed by extending downward from a peripheral edge of the telescopic opening; the limiting plate is detachably fixed on the bottom surface of the limiting rib, a limiting cavity is formed by enclosing between the limiting plate and the limiting rib, and the top of the limiting cavity is communicated with the telescopic opening; the sliding block is slidably arranged in the limiting cavity.

In some embodiments of the present application, a step portion is formed between the top of the limiting rib and the peripheral edge of the expansion opening; a limiting ring is convexly arranged on the peripheral side wall of the sliding block, the limiting ring is arranged in the limiting cavity, and the limiting ring can prop against the step part; when the limiting ring is propped against the step part, the top of the sliding block protrudes out of the telescopic opening.

In some embodiments of the present application, an operation panel is disposed on a front wall of the box, and a control board is disposed in the box, and the control board is respectively connected with the operation panel and the driving unit in a signal manner; the control panel can control the driving unit to work according to the door opening and closing signal generated by the operation panel so as to control the driving unit to drive the telescopic rod to move upwards or downwards.

In some embodiments of the present application, an interaction module is disposed on a front wall of the box, a control board is disposed in the box, and the control board is respectively connected with the interaction module and the driving unit through signals; the interaction module can collect door opening and closing signals, and the control board can control the driving unit to work according to the door opening and closing signals collected by the interaction module so as to control the driving unit to drive the telescopic rod to move upwards or downwards.

In some embodiments of the present application, the household appliance further comprises a hinge assembly, wherein the hinge assembly is arranged between the bottom of the door and the bottom of the front wall of the box body; the hinge assembly has a first shaft member and a first elastic member; the hinge assembly can perform opening and closing actions by taking the first shaft as an axis, so that the box door can be opened or closed relative to the box body by taking the first shaft as an axis; when the box door is in a closed state, the first elastic piece is deformed and forms elastic force; when the telescopic rod is clamped with the locking groove, the box door is in a locking state, and the first elastic piece can keep elastic force; when the telescopic rod is separated from the locking groove, the box door is in an unlocking state, and the elastic force of the first elastic piece can drive the box door to open relative to the box body by taking the first shaft piece as a shaft, so that the box door is automatically opened.

In some embodiments of the present application, the hinge assembly further comprises a fixing member, a mounting seat and a connecting member; the fixing piece is fixed on the front wall of the box body; the mounting seat is fixed in the box door, the bottom end of the mounting seat is hinged to the bottom end of the fixing piece through the first shaft piece, and the mounting seat can be opened and closed relative to the fixing piece by taking the first shaft piece as an axis; one end of the connecting piece is rotatably connected to the fixing piece through a second shaft piece, and the second shaft piece is arranged on the upper side of the first shaft piece at intervals; the other end of the connecting piece is slidably connected to the mounting seat through a third shaft piece; the first elastic piece is a first spring, the first elastic piece is arranged in the mounting seat, one end of the first spring abuts against the third shaft piece, and the other end of the first spring abuts against the inside of the mounting seat; when the door is closed, the third shaft member can move away from the first shaft member, and the first spring is compressed, so that the first spring forms the elastic force.

As can be seen from the technical scheme, the embodiment of the utility model has at least the following advantages and positive effects:

In the household appliance, a door lock mechanism is arranged between the door and the box body so as to lock and unlock the door; the door lock mechanism comprises a telescopic rod arranged on the box body, a driving unit, a sliding block arranged on the box door and a reset spring. The driving unit is used for driving the telescopic rod to stretch and retract, and the telescopic rod is clamped with or separated from the locking groove of the sliding block, so that the automatic locking and automatic unlocking functions of the box door are realized; simultaneously utilize reset spring and slider cooperation, make the slider can slide the flexible mouthful department of locating the chamber door telescopically for the slider can be under external force effect down remove when closing the door, in the retractile mouth, accessible reset spring lifts up the reset after closing the door again, outside protruding retractile mouth, make the bottom and the locked groove joint of telescopic link, further optimized the automatic locking function that realizes the chamber door. In addition, the scheme has compact structure, is beneficial to simplifying the structure of the door lock mechanism and reduces the production cost.

Drawings

Fig. 1 is a schematic view of a structure of a home appliance according to an embodiment of the present utility model.

Fig. 2 is a schematic view of the structure of fig. 1 in another state.

Fig. 3 is a partial structural schematic view of the home appliance of fig. 1.

Fig. 4 is a schematic view of the structure of the door and hinge assembly of fig. 3.

Fig. 5 is an exploded view of fig. 4.

Fig. 6 is a schematic view of the hinge assembly of fig. 5.

Fig. 7 is a schematic view of the structure of fig. 6 at another view angle.

Fig. 8 is a schematic view of the structure of fig. 6 with the cover removed.

Fig. 9 is a cross-sectional view of fig. 8.

Fig. 10 is an exploded view of fig. 8.

Fig. 11 is a schematic view of the hinge assembly of fig. 3 in a state in which the door is closed.

Fig. 12 is a cross-sectional view of fig. 11.

Fig. 13 is a schematic view of the structure of fig. 11 in another state.

Fig. 14 is a cross-sectional view of fig. 13.

Fig. 15 is a schematic view of the structure of fig. 11 in yet another state.

Fig. 16 is a cross-sectional view of fig. 15.

Fig. 17 is an enlarged schematic view of the area a in fig. 3.

Fig. 18 is a schematic view of the structure of the driving unit and the telescopic link in fig. 17.

Fig. 19 is a schematic view of the door of fig. 4 in another view.

Fig. 20 is an exploded view of fig. 19.

Fig. 21 is a schematic view of the slider, return spring and stop plate of fig. 20.

Fig. 22 is an exploded view of fig. 21.

Fig. 23 is a schematic cross-sectional view of the area of fig. 17.

Fig. 24 is a schematic view of the structure of fig. 23 in another state.

The reference numerals are explained as follows: 1. a case; 10. an inner cavity; 11. an inner container; 12. a door frame; 131. a heat radiation fan; 132. a wind scooper; 14. a supporting top plate; 15. a support back plate; 16. a positioning piece; 161. a positioning port; 17. an operation panel; 18. a control board; 19. an interaction module; 2. a door; 21. a door panel; 22. an inner layer plate; 23. a cover; 231. a receiving groove; 24. an upper end cap; 241. a telescopic opening; 25. a limiting plate; 251. a guide slide hole; 26. a limit rib; 261. a step portion; 27. a spacing cavity; 3. a hinge assembly; 31. a mounting base; 310. a receiving chamber; 311. a fixed ear; 312. a guide groove; 3121. a clamping groove; 32. a fixing member; 321. a first shaft member; 322. a clamping part; 33. a connecting piece; 331. a second shaft member; 332. a third shaft member; 34. a first elastic member; 35. a transmission rod; 351. a limiting piece; 352. a limit part; 353. a limit protrusion; 354. a bayonet; 36. a second elastic member; 37. a buffer member; 371. a damping rod; 4. a door lock mechanism; 41. a driving unit; 42. a telescopic rod; 43. a slide block; 431. a locking groove; 432. a guide slope; 433. a guide post; 434. a limiting ring; 44. and a return spring.

Detailed Description

Exemplary embodiments that embody features and advantages of the present utility model will be described in detail in the following description. It will be understood that the utility model is capable of various modifications in various embodiments, all without departing from the scope of the utility model, and that the description and illustrations herein are intended to be by way of illustration only and not to be construed as limiting the utility model.

In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

Currently, in some related household appliances, the household appliance generally includes a box body and a box door disposed on the front side of the box body, and the box door adopts a hinge or other auxiliary door opening devices to open or close the box door, but does not realize a complete automatic door opening function, so that the user experience is poor. Some household appliances adopt an electric door opening structure to realize an automatic door opening function, but the structure is complex and the cost is high.

Fig. 1 is a schematic view of a structure of a home appliance according to an embodiment of the present utility model. Fig. 2 is a schematic view of the structure of fig. 1 in another state. Fig. 3 is a partial structural schematic view of the home appliance of fig. 1.

Referring to fig. 1 to 3, a household appliance according to an embodiment of the present utility model mainly includes a cabinet 1, a door 2, a hinge assembly 3, and a door lock mechanism 4. The respective structures of the home appliances will be described below using an oven as an example.

Wherein, the box body 1 is constructed as a shell of the household appliance, and the box body 1 is in a rectangular hollow structure. In other embodiments, the case 1 may also have a housing structure with other shapes, and the specific shape of the case 1 may be adjusted according to the need, which is not limited herein.

An inner cavity 10 is formed in the case 1, and the inner cavity 10 can be used for high-temperature cooking treatment such as steaming and baking of food. It should be noted that in other embodiments, the inner cavity 10 may be used as a functional cavity. For example, when the household appliance is a dishwasher, the interior chamber 10 may be used to perform a cleaning process on dishes, e.g., bowls, plates, etc. When the household appliance is a disinfection cabinet, the inner cavity 10 can be used for disinfecting tableware such as bowls, dishes and the like.

In some embodiments, the case 1 is provided with a liner 11, and the inner cavity 10 is formed in the liner 11. The front end of the inner container 11 is provided with an opening, and the front end opening of the inner container 11 is communicated with the inner cavity 10.

An opening is arranged on the front side wall of the box body 1, and the opening of the box body 1 is opposite to the front end opening of the inner cavity 10 of the liner 11. Therefore, the food material to be cooked can be put into the inner cavity 10 through the front opening of the case 1 for high temperature cooking treatment. Meanwhile, after cooking is finished, the food material can be taken out from the inner cavity 10 through the front opening of the case 1.

Referring to fig. 1 to 3, a door 2 is movably disposed on a front side wall of a case 1, and the door 2 can open and close a front opening of the case 1, thereby opening and closing an inner cavity 10.

In some embodiments, the front side wall of the case 1 is provided with a door frame 12, and the front opening of the case 1 is formed in the center of the door frame 12, and the front opening of the inner cavity 10 is right opposite to the center of the door frame 12. When the door 2 is closed, the peripheral edge of the door 2 is attached to the front side of the door frame 12, and the gap between the door 2 and the door frame 12 is sealed, so that the inner cavity 10 can be closed.

Referring to fig. 3, in some embodiments, a heat dissipation air duct (not shown) is disposed in the case 1, and the heat dissipation air duct is disposed outside the inner container 11. Specifically, the heat dissipation air duct may be disposed in a cavity formed between the inner container 11 and the case 1. The air inlet end of the heat dissipation air duct is communicated with the cavity, and the air outlet end of the heat dissipation air duct is communicated with the outside of the box body 1. Meanwhile, a heat radiation fan 131 is arranged in the heat radiation air duct, the heat radiation fan 131 is used for providing wind power, extracting air in the cavity, and discharging heat in the cavity to the outside of the box body 1 through the heat radiation air duct to realize the heat radiation function in the box body 1.

In some embodiments, the heat dissipation air duct is disposed above the top of the liner 11, and the air outlet end of the heat dissipation air duct faces the front side of the box 1 and is communicated with the front side space of the box 1. Therefore, the heat radiation duct can radiate air and heat from the front side of the case 1.

In some embodiments, the heat dissipation fan 131 is disposed at the air inlet end of the heat dissipation air channel. The heat dissipation fan 131 adopts a cross-flow fan so as to improve the wind power of the air inlet end of the heat dissipation air channel, improve the efficiency of extracting the air in the cavity and further improve the heat dissipation efficiency in the cavity.

Referring to fig. 3, in some embodiments, a supporting top plate 14 is disposed in the case 1, and the supporting top plate 14 is disposed above the liner 11 at intervals. The top surface of the supporting top plate 14 is provided with a wind scooper 132, and a heat dissipation air channel is formed by enclosing the wind scooper 132 and the supporting top plate 14. At this time, the rear end of the air guide cover 132 is used as the air inlet end of the heat dissipation air duct, and the heat dissipation fan 131 is disposed at the rear end of the air guide cover 132. The front end of the air guide cover 132 faces the front side of the box 1 and serves as an air outlet end of the heat dissipation air duct.

In some embodiments, the box 1 is further provided with a supporting backboard 15, the supporting backboard 15 is arranged on the back side of the liner 11, the bottom of the supporting backboard 15 is supported on the bottom plate of the box 1, the top of the supporting backboard 15 is connected with the rear end of the supporting top plate 14, and the front end of the supporting top plate 14 is fixed on the front wall of the box 1, so that the supporting top plate 14 can be stably fixed on the upper side of the liner 11.

Referring to fig. 2 and 3, the hinge assembly 3 is disposed between the door 2 and the case 1, the door 2 is hinged to the front side of the case 1 through the hinge assembly 3, and the door 2 can rotate about the axis of the hinge assembly 3, so that the door 2 can open and close the front opening of the case 1, thereby opening or closing the inner cavity 10.

In some embodiments, the hinge assembly 3 is disposed between a bottom region of the door 2 and a bottom region of the cabinet 1. Therefore, when the door 2 is opened or closed, the bottom area of the door 2 can be kept connected to the front side wall of the case 1, and the top area of the door 2 can be close to or far from the front opening of the case 1 along with the rotation of the door 2, so as to open or close the inner cavity 10.

Fig. 4 is a schematic view of the structure of the door 2 and the hinge assembly 3 of fig. 3. Fig. 5 is an exploded view of fig. 4. Fig. 6 is a schematic structural view of the hinge assembly 3 of fig. 5. Fig. 7 is a schematic view of the structure of fig. 6 at another view angle.

Referring to fig. 4 to 7, in some embodiments, the hinge assemblies 3 are provided with two sets, and the two sets of hinge assemblies 3 are disposed on the left and right sides of the bottom region of the door 2. The axes of the two groups of hinge assemblies 3 are coaxially arranged, and the door 2 can be rotated by the axes of the two groups of hinge assemblies 3 to realize the opening or closing of the door 2.

Referring to fig. 4-7, in some embodiments, the door 2 includes a door panel 21 and an inner layer panel 22. The door panel 21 is located on the front side of the door 2, and the inner layer plates 22 are provided at intervals on the back side of the door panel 21. The hinge assembly 3 is provided at a bottom region of the rear surface of the door panel 21, and the hinge assembly 3 is sandwiched and hidden between the door panel 21 and the inner panel 22.

In some embodiments, the inner layer panel 22 is provided in plurality, and the plurality of inner layer panels 22 are sequentially arranged in parallel at intervals on the back side of the door panel 21. It should be noted that, in other embodiments, only one inner layer plate 22 may be provided.

Referring to fig. 4 to 7, in some embodiments, a cover 23 is disposed in the door 2, the cover 23 is fixed on the back side of the door panel 21, and the inner layer plate 22 covers the back side of the cover 23. The hinge assembly 3 is mounted and fixed inside the cover 23, and then the hinge assembly 3 is hidden between the cover 23 and the door panel 21 through the cover 23, and the hinge assembly 3 is clamped between the door panel 21 and the inner plate 22.

In some embodiments, the cover 23 is elongated, and the cover 23 extends along the height direction of the door 2. The housing cover 23 is provided with a housing groove 231 therein, the housing groove 231 extends in a long shape, and the extending direction of the housing groove 231 coincides with the extending direction of the housing cover 23. The receiving groove 231 is used for providing an installation space for the hinge assembly 3, and the hinge assembly 3 is arranged at the bottom end area of the receiving groove 231.

In some embodiments, two covers 23 are provided, and two covers 23 are provided separately on the left and right sides of the back side of the door panel 21. The two cover covers 23 are arranged in one-to-one correspondence with the two sets of hinge assemblies 3, thereby fixing the hinge assemblies 3 in one-to-one correspondence to the back side of the door panel 21.

The number of the hinge assemblies 3 and the cover 23 may be adjusted as needed, and is not limited herein.

Referring to fig. 2-5, in some embodiments, the door 2 further includes an upper end cap 24, where the upper end cap 24 is disposed in a top region of the back side of the door panel 21. The top of the inner plate 22 and the cover 23 are connected to an upper cover 24, and the inner plate 22 and the cover 23 are fixed to the back of the door panel 21 through the upper cover 24.

Fig. 8 is a schematic view of the structure of fig. 6 with the cover 23 removed. Fig. 9 is a cross-sectional view of fig. 8. Fig. 10 is an exploded view of fig. 8.

Referring to fig. 3 to 10, in some embodiments, the hinge assembly 3 includes a mounting base 31, a fixing member 32, a connecting member 33, a first elastic member 34, a transmission rod 35, a second elastic member 36, and a buffer member 37.

The mounting base 31 is fixed to the housing groove 231 in the cover 23, and the mounting base 31 is fixed to the back surface of the door panel 21 via the cover 23, and the mounting base 31 is fixed to the inside of the door 2. The mounting seat 31 is used for providing a mounting space for the fixing member 32, the connecting member 33, the first elastic member 34, the transmission rod 35, the second elastic member 36, the buffer member 37 and other components.

In some embodiments, the mounting seat 31 is disposed at the bottom end of the receiving slot 231. The mounting seat 31 extends in a long strip shape, and the extending direction of the mounting seat 31 is identical to the extending direction of the accommodating groove 231.

In some embodiments, two sides of the bottom of the mounting seat 31 are respectively provided with a fixing lug 311, the fixing lug 311 is provided with a fixing hole (not labeled in the figure), and the bottom end surface of the cover 23 is provided with a screw hole (not shown in the figure) opposite to the fixing hole. The fixing lug 311 can be fixedly connected to the bottom end surface of the cover 23 by screws inserted into the fixing holes and screw holes, and the mount 31 can be fixed in the receiving groove 231 of the cover 23 and in the bottom end region of the receiving groove 231.

Referring to fig. 3 to 10, in some embodiments, the fixing member 32 is fixed to the front wall of the case 1, and the fixing member 32 is fixed to the bottom region of the side edge of the door frame 12. The bottom of mounting 32 is equipped with first shaft member 321, and first shaft member 321 is as the axis of rotation, and the bottom of mount pad 31 links to each other with first shaft member 321, and the bottom of mount pad 31 is rotated with the bottom of mounting 32 through first shaft member 321 and is connected. Therefore, the mounting seat 31 in the hinge assembly 3 can perform an opening and closing operation with respect to the fixing member 32 by taking the first shaft member 321 as an axis, so that the door 2 can perform an opening and closing operation with respect to the front wall of the case 1 by taking the first shaft member 321 as an axis, and the door 2 can open or close the front opening of the case 1.

Fig. 11 is a schematic view of the hinge assembly 3 in fig. 3 in a state in which the door 2 is closed. Fig. 12 is a cross-sectional view of fig. 11. Fig. 13 is a schematic view of the structure of fig. 11 in another state. Fig. 14 is a cross-sectional view of fig. 13. Fig. 15 is a schematic view of the structure of fig. 11 in yet another state. Fig. 16 is a cross-sectional view of fig. 15.

Referring to fig. 3 to 16, in some embodiments, a positioning member 16 is provided at the door frame 12 at the front side of the case 1, and the positioning member 16 extends vertically and is fixed at a side edge of the door frame 12. The end of the fixing member 32 near the case 1 is fastened and fixed to the positioning member 16, so that the fixing member 32 can be fixed to the front wall of the case 1.

Referring to fig. 11 to 16, in some embodiments, the positioning member 16 is provided with a positioning opening 161, and an end portion of the fixing member 32 near the case 1 is provided with a clamping portion 322. The clamping portion 322 can extend into the positioning opening 161, and is clamped and fixed inside the positioning opening 161, so that the end portion of the fixing member 32, which is close to the case 1, is clamped and fixed on the positioning member 16.

Referring to fig. 11 to 16, in some embodiments, the clamping portion 322 is located at the top end of the fixing member 32, and the clamping portion 322 and the first shaft 321 are respectively disposed at the upper and lower ends of the fixing member 32. The first shaft 321 is located at the end of the fixing member 32 remote from the case 1.

When the door 2 is in the closed state, the first shaft 321 is located at the front lower end region of the hinge assembly 3, and the center of gravity of the door 2 and the hinge assembly 3 is located at the side of the first shaft 321 near the cabinet 1, as shown in fig. 11.

When the door 2 is opened at a certain angle about the first shaft 321, the center of gravity of the door 2 and the hinge assembly 3 may be located at a side of the first shaft 321 away from the cabinet 1. At this time, the gravity of the door 2 can automatically open the mount 31 of the hinge assembly 3 around the first shaft 321, and thus the door 2 can be automatically opened, as shown in fig. 13 and 15.

Referring to fig. 9 to 16, in some embodiments, a connecting member 33 is disposed between the fixing member 32 and the mounting seat 31, the connecting member 33 is used for connecting the fixing member 32 and the mounting seat 31, respectively, and the connecting member 33 can enable the fixing member 32 and the mounting seat 31 to be kept at a specific opening and closing angle, so that the door 2 can be at a specific opening and closing angle. Specifically, one end of the connecting member 33 is rotatably connected to the fixing member 32 through a second shaft member 331, the second shaft member 331 is disposed on the upper side of the first shaft member 321 at intervals, and the second shaft member 331 is located in an intermediate region between the engaging portion 322 and the first shaft member 321. The other end of the connecting member 33 is slidably connected to the mounting block 31 via a third shaft member 332. When the mounting seat 31 opens and closes relative to the fixing member 32 with the first shaft member 321 as the shaft, the connecting member 33 can rotate forward or backward relative to the fixing member 32 with the second shaft member 331 as the shaft, and meanwhile, the other end of the connecting member 33 moves forward or backward on the mounting seat 31 through the third shaft member 332, and a specific opening and closing angle can be kept between the fixing member 32 and the mounting seat 31 by fixing the third shaft member 332 at different positions of the mounting seat 31.

Referring to fig. 8 to 16, in some embodiments, a guide groove 312 extending away from the first shaft 321 is formed on a side wall of the mounting base 31, and the third shaft 332 is slidably disposed in the guide groove 312. When the door 2 is opened, the mount 31 is opened with respect to the mount 32 by using the first shaft 321 as an axis, and the third shaft 332 is movable in a direction approaching the first shaft 321 along the guide groove 312, so that the door opening angle gradually increases. When the door 2 is closed, the mount 31 is closed with respect to the mount 32 by the first shaft 321, and the third shaft 332 is movable in a direction away from the first shaft 321 along the guide groove 312, so that the door opening angle gradually decreases.

Referring to fig. 10 to 15, in some embodiments, a clamping groove 3121 is concavely formed at an end of the guide groove 312 near the first shaft 321 toward a side near the case 1. When the door 2 is opened, as the opening angle of the door 2 becomes larger, the third shaft member 332 can move to the position of the clamping groove 3121 along the guiding groove 312, so that the third shaft member 332 is clamped at the position of the clamping groove 3121, and at this time, the door 2 can be kept at the maximum opening angle, so that the food material can be conveniently put into the inner cavity 10 or taken out from the inner cavity 10.

In some embodiments, the groove depth of the latch groove 3121 is smaller than the radius of the third shaft 332, so that the third shaft 332 can be separated from the latch groove 3121 under a certain closing force, so that the third shaft 332 can move along the guide groove 312 in a direction away from the first shaft 321, and the door 2 can be normally closed.

In some embodiments, two guide grooves 312 are provided, the two guide grooves 312 are respectively disposed on two opposite sides of the mounting seat 31, and the two guide grooves 312 are opposite in parallel and spaced apart. Both ends of the third shaft 332 can be respectively connected in a guide groove 312, so that the third shaft 332 can stably slide in the guide groove 312 of the mounting seat 31.

In some embodiments, the mounting seat 31 is provided with a receiving cavity 310, and the receiving cavity 310 extends along the length direction of the mounting seat 31. The guide groove 312 is communicated with the accommodating cavity 310, and the third shaft member 332 and the end portion of the connecting member 33 connected with the third shaft member 332 are movably arranged in the accommodating cavity 310.

Referring to fig. 9 to 16, in some embodiments, a first elastic member 34 is disposed in the mounting seat 31, and the first elastic member 34 is connected to a third shaft member 332. When the door 2 is closed, the third shaft 332 can move in a direction away from the first shaft 321, and the third shaft 332 drives the first elastic member 34 to deform, so that the first elastic member 34 forms an elastic force. The elastic force acts as a door opening force, and can drive the third shaft member 332 to move in a direction approaching the first shaft member 321, so that the mounting seat 31 opens with respect to the fixing member 32 with the first shaft member 321 as an axis, and the door 2 can be automatically opened. In addition, after the door 2 is opened by a certain angle, the deformation of the first elastic member 34 is restored and the elastic force is lost. At this time, the center of gravity of the door 2 and the hinge assembly 3 is located at the side of the first shaft 321 away from the case 1, so that the gravity of the door 2 can make the mounting seat 31 continue to open with the first shaft 321 as the shaft, so that the door 2 can continue to open, as shown in fig. 13 and 15, and finally the automatic opening function of the door 2 is achieved.

Referring to fig. 9 to 16, in some embodiments, the first elastic member 34 is a first spring, which is a compression spring, and the first spring is disposed in the mounting seat 31 and is disposed in the accommodating cavity 310. One end of the first spring abuts against the third shaft member 332, and the other end of the first spring abuts against the end wall of the accommodating cavity 310 away from the first shaft member 321, that is, the other end of the first spring abuts against the inside of the mounting seat 31.

When the door 2 is closed, the third shaft 332 moves toward the end of the accommodating cavity 310 away from the first shaft 321, so that the third shaft 332 can compress the first spring, so that the first spring is compressed, and a compression elastic force is formed in the first spring. When the door 2 is unlocked, the compression elastic force can drive the third shaft member 332 to move toward one end of the accommodating cavity 310 near the first shaft member 321, so that the door 2 can be opened by taking the first shaft member 321 as an axis, and the door opening angle of the door 2 is gradually increased. When the door 2 is opened by a certain angle, the gravity centers of the door 2 and the hinge assembly 3 are located at the side of the first shaft 321 far away from the case 1, so that the gravity of the door 2 can enable the door 2 to be opened continuously, as shown in fig. 13 and 15, and finally the automatic opening function of the door 2 is realized.

It should be noted that, in other embodiments, the first spring may also be an extension spring, and the first spring is disposed in the mounting seat 31 and disposed in the accommodating cavity 310. One end of the first spring is connected to the first shaft 321, and the other end of the first spring is connected to the third shaft 332.

When the door 2 is closed, the third shaft 332 moves toward the end of the accommodating cavity 310 away from the first shaft 321, so that the third shaft 332 can stretch the first spring, so that the length and the side length of the first spring are long, and a stretching elastic force is formed in the first spring. When the door 2 is unlocked, the stretching elastic force can drive the third shaft member 332 to move toward one end of the accommodating cavity 310 near the first shaft member 321, so that the door 2 can be opened by taking the first shaft member 321 as an axis, and the door opening angle of the door 2 is gradually increased. When the door 2 is opened by a certain angle, the gravity centers of the door 2 and the hinge assembly 3 are located at the side of the first shaft 321 far away from the case 1, so that the gravity of the door 2 can enable the door 2 to be opened continuously, as shown in fig. 13 and 15, and finally the automatic opening function of the door 2 is realized.

Referring to fig. 8 to 16, in some embodiments, the fixing member 32 is a fixing plate, the connecting member 33 is a connecting plate, the fixing plate and the connecting plate are both plate-shaped structures, two connecting plates are provided, the two connecting plates are arranged in parallel at intervals, and the two connecting plates are respectively arranged on two opposite sides of the fixing plate. One ends of the two connecting plates are respectively sleeved at two ends of the second shaft member 331, and the other ends of the two connecting plates are respectively sleeved at two ends of the third shaft member 332. Therefore, the two connection plates are connected between the second shaft member 331 and the third shaft member 332, which can improve the connection stability between the fixing plate and the mount 31 and make the power transmission more stable.

Referring to fig. 8 to 16, in some embodiments, the transmission rod 35 extends into the accommodating cavity 310 of the mounting seat 31 from the end of the mounting seat 31 away from the first shaft 321, and the end of the transmission rod 35 extending into the mounting seat 31 is connected to the third shaft 332. The transmission rod 35 extends in a strip shape, the extending direction of the transmission rod 35 is consistent with the extending direction of the mounting seat 31, and the transmission rod 35 is slidably arranged on the mounting seat 31 along the length direction thereof. Meanwhile, the second elastic member 36 is disposed on the transmission rod 35 extending out of the mounting seat 31, one end of the second elastic member 36 is connected with the mounting seat 31, and the other end of the second elastic member 36 is connected with the transmission rod 35 far away from the mounting seat 31.

When the door 2 is opened, the third shaft member 332 can drive the transmission rod 35 to move in a direction close to the first shaft member 321, so that the length of the transmission rod 35 exposed out of the mounting seat 31 is shortened, the second elastic member 36 is compressed and deformed to form a compression buffer force, and the direction of the compression buffer force is opposite to the door opening direction, so that the door opening speed of the door 2 can be slowed down by using the compression buffer force of the second elastic member 36.

In some embodiments, the second resilient member 36 is a second spring, which is a compression spring. One end of the transmission rod 35, which is far away from the first shaft 321, is provided with a stopper 351. The end of the limiting piece 351 protrudes out of the outer peripheral wall of the transmission rod 35, the second spring is sleeved on the transmission rod 35 extending out of the mounting seat 31, one end of the second spring abuts against the end face of the mounting seat 31, and the other end of the second spring abuts against the limiting piece 351. Therefore, when the door 2 is opened, the third shaft 332 can drive the transmission rod 35 to move in a direction approaching to the first shaft 321, so that the length of the transmission rod 35 exposed to the mounting seat 31 is shortened, and the second spring is compressed and forms a compression buffer force. The direction of the compression buffer force is opposite to the door opening direction, so that the door opening speed can be slowed down. When the door 2 is closed, the length of the transmission rod 35 exposed to the mounting seat 31 is increased, the second spring is gradually reset, and the elastic force is gradually lost.

In other embodiments, the second spring may be an extension spring. The extension spring is arranged in the accommodating cavity 310 extending into the mounting seat 31, one end of the extension spring is connected with the end wall, far away from the first shaft element 321, of the mounting seat 31, and the other end of the extension spring is connected with the third shaft element 332. When the door 2 is opened, the third shaft 332 moves in a direction approaching the first shaft 321, so that the second spring is stretched and a tensile buffer force is formed. The direction of the stretching buffer force is opposite to the door opening direction, so that the door opening speed can be reduced.

Referring to fig. 8 to 16, in some embodiments, a guide hole (not shown) is formed on an end surface of the mounting base 31 away from the first shaft 321, the transmission rod 35 extends into the mounting base 31 from the guide hole to be connected with the third shaft 332, and the transmission rod 35 movably penetrates into the guide hole. When the third shaft member 332 moves along the guide groove 312, the transmission rod 35 may move in the guide hole, so that the extending direction of the transmission rod 35 is parallel or substantially parallel to the extending direction of the mounting seat 31.

In some embodiments, a guide hole extends through an end wall of the mounting block 31 along the length of the mounting block 31, so that the direction of extension of the drive rod 35 may be maintained parallel or substantially parallel to the direction of extension of the mounting block 31 as the drive rod 35 moves within the guide hole.

Referring to fig. 8 to 10, in some embodiments, a portion of the transmission rod 35 extending into the mounting seat 31 is formed with a first mounting groove (not labeled in the drawings), the first mounting groove extends along a length direction of the transmission rod 35, the first elastic member 34 is disposed in the first mounting groove, and an end wall of the end mounting seat 31 of the first elastic member 34, which is far from the third shaft member 332, is abutted against an end wall of the end mounting seat 31, which is far from the first shaft member 321. Therefore, when the door 2 is closed, the third shaft 332 moves along the guide groove 312 in a direction away from the first shaft 321 of the mounting seat 31, so that the first elastic member 34 is compressed to form an elastic force. After the door 2 is unlocked, the third shaft member 332 can be driven to move along the guide slot 312 toward the direction of the mounting seat 31 near the first shaft member 321 by using the elastic force, so that the door 2 is automatically opened by a certain angle.

In some embodiments, a limiting portion 352 is disposed at an end of the first mounting groove near the third shaft member 332, the limiting portion 352 extends from the transmission rod 35 into the first mounting groove, and an end of the first elastic member 34 near the third shaft member 332 abuts against the limiting portion 352. Therefore, when the door 2 is closed, the third shaft 332 moves along the guide slot 312 in a direction away from the first shaft 321 of the mounting seat 31, so that the third shaft 332 can drive the transmission rod 35 and the limiting portion 352 to compress the first elastic member 34, and the first elastic member 34 forms an elastic force. After the door 2 is unlocked, the third shaft member 332 can be driven to move along the guide slot 312 toward the direction of the mounting seat 31 near the first shaft member 321 by using the elastic force, so that the door 2 is automatically opened by a certain angle.

Referring to fig. 8 to 16, in some embodiments, a portion of the transmission rod 35 extending out of the mounting seat 31 is formed with a second mounting groove (not shown) extending along a length direction of the transmission rod 35, and the buffer member 37 is disposed in the second mounting groove. The length of the buffer 37 is smaller than the length of the second mounting groove.

The buffer 37 can be disposed at a distance from the mount 31 when the door 2 is closed, as shown in fig. 12.

When the door 2 is opened, the transmission rod 35 is driven by the third shaft member 332 to move in a direction approaching the first shaft member 321, so that the length of the transmission rod 35 exposed to the mounting seat 31 is gradually shortened, and the length of the second mounting groove is gradually shortened. Therefore, when the opening angle of the door 2 is smaller than the preset angle, the length of the second mounting groove is still longer than the length of the buffer member 37, so the buffer member 37 can be kept out of contact with the mount seat 31, as shown in fig. 14. Until the opening angle of the door 2 is greater than the preset angle, the length of the second mounting groove is smaller than the length of the buffer member 37, so that the buffer member 37 can abut against the end wall of the mounting seat 31, as shown in fig. 16, a buffer force is formed in the buffer member 37, and the direction of the buffer force is opposite to the opening direction, so that the door opening speed can be slowed down.

It should be noted that the door opening process of the door 2 may be roughly divided into three stages, namely, a first stage, a second stage and a third stage.

The first stage is a stage of transition of the door 2 from the state of fig. 12 to the state of fig. 14, in which the first elastic member 34 provides an elastic door opening force to drive the door 2 to automatically open at a first preset angle, i.e. the door 2 is transitioned from the closed state to the small-angle door opening state.

The second stage is a stage of transition of the door 2 from the state of fig. 14 to the state of fig. 16, in which in the second stage, the elastic opening force of the first elastic member 34 disappears, and the door 2 can be continuously opened to a second preset angle under the action of its own weight, that is, the door 2 can be transitioned from the small-angle opening state to the large-angle opening state, at this time, the second elastic member 36 provides a buffering force opposite to the opening force until the buffer member 37 abuts against the mounting seat 31, that is, the state shown in fig. 16.

The third stage is a stage in which the door 2 is shifted from the state of fig. 16 to a larger door opening angle state, and in the third stage, the door 2 can be continuously opened to a third preset angle under the action of self gravity, that is, the door 2 can be shifted from a large-angle door opening state to a maximum-angle door opening state. And in the third stage, the second elastic member 36 and the buffer member 37 together provide a buffer force, and the buffer forces of the second elastic member 36 and the buffer member 37 are gradually increased to continue to reduce the door opening speed until the door 2 is stopped or until the door 2 is opened to a maximum door opening angle.

It should be noted that the second elastic member 36 does not provide a damping force against the door opening force during the first stage of the door opening process. In the corresponding second and third phases of the closing process, the elastic force provided by the second elastic member 36 can form a closing force to assist the door 2 to close.

Referring to fig. 8 to 16, in some embodiments, two transmission rods 35 are provided, and the two transmission rods 35 are arranged at intervals. Meanwhile, two guide holes are formed in the end wall, far away from the first shaft element 321, of the mounting seat 31, the two guide holes are parallel and opposite to each other at intervals, and the two guide holes are arranged in one-to-one correspondence with the two transmission rods 35. The two transmission rods 35 may be disposed on the mount 31 in parallel at a spacing. The spacing area between the two transmission rods 35 extending into the mounting seat 31 forms a first mounting groove, and the spacing area between the two transmission rods 35 extending out of the mounting seat 31 forms a second mounting groove. When the door 2 is closed, the transmission rod 35 moves in a direction away from the first shaft 321, the length of the transmission rod 35 extending into the mount 31 becomes shorter, and the length of the transmission rod 35 extending out of the mount 31 becomes longer, so that the length of the first mounting groove becomes shorter, the length of the second mounting groove becomes longer, and the first elastic member 34 is compressed. When the door 2 is opened, the transmission rod 35 moves in a direction approaching the first shaft 321, the length of the transmission rod 35 extending into the mounting seat 31 is increased, the length of the transmission rod 35 extending out of the mounting seat 31 is decreased, the length of the first mounting groove is increased, the length of the second mounting groove is decreased, and the second elastic member 36 is compressed until the length of the second mounting groove is smaller than the length of the buffer member 37, and the buffer member 37 is compressed.

Referring to fig. 10, in some embodiments, one end of the two transmission rods 35 near the third shaft member 332 is respectively provided with a limiting portion 352, the two limiting portions 352 are disposed opposite to each other, and one end of the first elastic member 34 near the third shaft member 332 abuts against the two limiting portions 352.

Referring to fig. 10 to 16, in some embodiments, the limiting member 351 is disposed at an end of the transmission rod 35 away from the third shaft member 332, and the limiting member 351 is disposed between two transmission rods 35. The spacing member 351 is located at an end of the second mounting groove remote from the mounting seat 31. One end of the buffer 37 remote from the mount 31 can abut against the stopper 351. The groove side wall of the second mounting groove is convexly provided with a limiting protrusion 353, the limiting protrusion 353 extends from the inner wall of the transmission rod 35 to the second mounting groove in a protruding mode, the limiting protrusion 353 and the mounting seat 31 are arranged at intervals, one end, close to the mounting seat 31, of the buffer piece 37 can abut against the limiting protrusion 353, and then the buffer piece 37 is limited between the limiting protrusion 353 and the limiting piece 351. Therefore, when the door 2 is closed and when the door 2 is opened by an angle smaller than a preset angle, the buffer members 37 can be arranged at intervals with the mounting seat 31, the buffer members 37 do not contact with the mounting seat 31, and the buffer members 37 do not provide a buffering force.

Referring to fig. 10 to 16, in some embodiments, the buffer member 37 is a damper, the damper has a strip shape, and an extending direction of the damper is consistent with an extending direction of the second mounting groove. The damper is limited between the limiting protrusion 353 and the limiting member 351, one end of the damper facing the mounting seat 31 is provided with a damping rod 371, and the damping rod 371 exceeds the position of the limiting protrusion 353 and extends towards the mounting seat 31 continuously. When the opening angle of the door 2 is larger than the preset angle, the damping rod 371 is abutted against the end wall of the mounting seat 31, so that a buffering force is generated, and the door opening speed is slowed down.

Referring to fig. 10 to 16, in some embodiments, one end of each of the two transmission rods 35 away from the third shaft 332 is respectively provided with a bayonet 354, the two bayonets 354 are oppositely arranged at intervals, the limiting member 351 is a limiting pin, and two ends of the limiting pin are respectively clamped in one bayonet 354, so that the limiting pin can be fixed between the two transmission rods 35.

Fig. 17 is an enlarged schematic view of the area a in fig. 3. Fig. 18 is a schematic structural view of the driving unit 41 and the telescopic link 42 in fig. 17. Fig. 19 is a schematic view of the door 2 of fig. 4 in another view. Fig. 20 is an exploded view of fig. 19.

Referring to fig. 17-20, and in conjunction with fig. 1-3, in some embodiments, door latch mechanism 4 is disposed in cabinet 1 and door 2, respectively. The door lock mechanism 4 is used for being clamped with or separated from the top area of the door 2 when the door 2 is closed, so as to lock the door 2 or unlock the door 2.

When the door lock mechanism 4 is clamped with the door 2, the door 2 is in a locked state, the front opening of the inner cavity 10 is sealed by the door 2, and the first elastic member 34 can maintain the elastic force.

When the door lock mechanism 4 is separated from the door 2, the door 2 is in an unlocked state, and the elastic force of the first elastic member 34 can drive the third shaft member 332 to move in a direction approaching the first shaft member 321, so that the mounting seat 31 opens relative to the fixing member 32 with the first shaft member 321 as an axis, and further the door 2 opens relative to the box 1 with the first shaft member 321 as an axis, so that the door 2 is automatically opened. After the door 2 is automatically opened by a certain angle, the door 2 can be automatically opened by utilizing the gravity of the door 2, so that the automatic door opening function of the household appliance is realized.

It should be noted that, in other embodiments, the door lock mechanism 4 may be disposed in other areas outside the inner cavity 10, for example, the door lock mechanism 4 may be engaged with or disengaged from the left or right outer wall of the door 2, so as to lock or unlock the door 2.

Fig. 21 is a schematic view of the structure of the slider 43, the return spring 44 and the stopper plate 25 in fig. 20. Fig. 22 is an exploded view of fig. 21. Fig. 23 is a schematic cross-sectional view of the area of fig. 17. Fig. 24 is a schematic view of the structure of fig. 23 in another state.

Referring to fig. 17 to 24, in some embodiments, the door lock mechanism 4 includes a driving unit 41, a telescopic rod 42, a slider 43, and a return spring 44.

Wherein the driving unit 41 is provided in the case 1. When the door 2 is closed, the driving unit 41 approaches the top area of the door 2. The telescopic rod 42 is provided in the driving unit 41, and when the door 2 is closed, the telescopic rod 42 is provided above the door 2.

In some embodiments, the driving unit 41 adopts an electromagnetic lock, the telescopic rod 42 is arranged in the electromagnetic lock, and the telescopic rod 42 is controlled to move up and down along the axial direction of the telescopic rod 42 through the electromagnetic lock, so that the lower end of the telescopic rod 42 can be close to or far away from the door 2.

In other embodiments, the driving unit 41 may be a motor, a cylinder, or the like.

Referring to fig. 17 to 24, the slider 43 is protruded on the top of the door 2, specifically, the slider 43 is protruded on the top surface of the upper end cover 24, and a locking groove 431 is concavely formed on the top surface of the slider 43. When the door 2 is closed, the telescopic rod 42 and the locking groove 431 of the sliding block 43 are arranged in a vertically opposite mode. At this time, the driving unit 41 can drive the telescopic rod 42 to move downward, so that the lower end of the telescopic rod 42 is clamped in the locking groove 431, and the door 2 is locked. Meanwhile, the driving unit 41 can drive the telescopic rod 42 to move upwards, so that the lower end of the telescopic rod 42 exits the locking groove 431 and is separated from the locking groove 431, and then the door 2 is unlocked, and at this time, the door 2 can be automatically opened under the action of the elastic door opening force of the first elastic piece 34 of the hinge assembly 3.

In some embodiments, the top surface of the upper end cover 24 of the door 2 is provided with a telescopic opening 241, the sliding block 43 is slidably disposed at the telescopic opening 241, and the sliding block 43 can slide towards the inner side of the telescopic opening 241 under the action of external force, so that the sliding block 43 is retracted into the telescopic opening 241. The return spring 44 is disposed inside the door 2, the return spring 44 is connected to the slider 43, and the return spring 44 can drive the slider 43 to slide outside the expansion opening 241, so that the slider 43 protrudes out of the expansion opening 241. Therefore, when no external force acts, the return spring 44 urges the slider 43 to protrude out of the extension port 241, and when external force acts, the slider 43 can retract into the extension port 241. When the door 2 is abnormally closed, as shown in fig. 24, the sliding block 43 can prop against the bottom end of the telescopic rod 42, the bottom end of the telescopic rod 42 can squeeze the sliding block 43, so that the sliding block 43 is retracted into the telescopic opening 241 until the bottom end of the telescopic rod 42 and the locking groove 431 are vertically opposite to each other, and after the sliding block 43 can slide upwards and protrude out of the telescopic opening 241 under the action of the reset spring 44, so that the bottom end of the telescopic rod 42 and the locking groove 431 are clamped, and the function of locking the door 2 is realized.

In some embodiments, a guide slope 432 is provided on the top of the slider 43 on the side facing the case 1, the guide slope 432 has a smooth or even slope structure, and the guide slope 432 extends obliquely upward in a direction away from the case 1. In the process of closing the door 2, the guiding inclined plane 432 can abut against the bottom end of the telescopic rod 42, so that the sliding block 43 can slide towards the inner side of the telescopic opening 241 under the extrusion action of the telescopic rod 42, that is, the sliding block 43 can slide downwards under the extrusion action of the telescopic rod 42, and retract into the telescopic opening 241, as shown in fig. 24.

Referring to fig. 21 to 24, in some embodiments, a guide pillar 433 extending downward is protruding from a bottom of the slider 43, and an extending direction of the guide pillar 433 is consistent with a sliding direction of the slider 43. Meanwhile, a limiting plate 25 is arranged in the box door 2, the limiting plate 25 and the telescopic opening 241 are arranged at intervals up and down, and the sliding block 43 is arranged above the limiting plate 25. The limiting plate 25 is provided with a guide sliding hole 251 which is arranged opposite to the guide post 433, and the lower end of the guide post 433 is slidably inserted into the guide sliding hole 251. Therefore, when the slider 43 slides up and down at the expansion/contraction port 241, the guide post 433 can be inserted into the guide slide hole 251 and move up and down along the guide slide hole 251.

In some embodiments, a return spring 44 is sleeved on the periphery of the guide post 433, the top end of the return spring 44 abuts against the bottom of the slider 43, and the bottom end of the return spring 44 abuts against the limiting plate 25. When the slider 43 moves downward by an external force, the return spring 44 is compressed. When the external force is removed, the slider 43 can move upward along the guide post 433 and the guide sliding hole 251 under the action of the return spring 44, so that the top of the slider 43 protrudes out of the telescopic opening 241.

Referring to fig. 23 to 24, in some embodiments, the door 2 is provided with a limiting rib 26 disposed around the telescopic opening 241, the limiting rib 26 is annular, and the limiting rib 26 is formed by extending downward from the peripheral edge of the telescopic opening 241. The limiting plate 25 is arranged on the bottom surface of the limiting rib 26, a limiting cavity 27 is formed by enclosing between the limiting plate 25 and the limiting rib 26, and the sliding block 43 is slidably arranged in the limiting cavity 27. The top of the limiting cavity 27 is communicated with the telescopic opening 241, so that when the sliding block 43 moves upwards along the limiting cavity 27, the top of the sliding block 43 can protrude out of the telescopic opening 241.

In some embodiments, the limiting plate 25 is detachably fixed on the bottom surface of the limiting rib 26, so that the sliding block 43 and the return spring 44 can be installed in the limiting cavity 27 from the top opening of the limiting cavity 27.

Referring to fig. 21 to 24, in some embodiments, a limiting ring 434 is protruding from a peripheral wall of the slider 43, the limiting ring 434 is disposed in the limiting cavity 27, and the size of the limiting ring 434 is larger than that of the telescopic opening 241. Meanwhile, a step 261 is formed between the top of the limiting rib 26 and the peripheral edge of the telescopic opening 241, and the limiting ring 434 can abut against the step 261, so that the sliding block 43 is limited to move in the limiting cavity 27. When the limiting ring 434 abuts against the step 261, the top of the slider 43 can protrude out of the telescopic opening 241, and then the locking groove 431 of the slider 43 is engaged with the bottom end of the telescopic rod 42.

Referring to fig. 1 to 3, in some embodiments, an operation panel 17 is provided on a front wall of the case 1. A control board 18 is provided in the case 1, and the control board 18 may be provided on the back surface of the operation panel 17. The control board 18 is in signal connection with the operation panel 17, while the control board 18 is in signal connection with the driving unit 41. The door opening signal for controlling the unlocking of the door 2 or the door closing signal for controlling the opening and locking of the door 2 can be formed through the operation panel 17, the operation panel 17 transmits the door opening and closing signal to the control panel 18, and the control panel 18 can control the driving unit 41 to work according to the door opening and closing signal generated by the operation panel 17, so that the driving unit 41 is controlled to drive the telescopic rod 42 to move downwards to lock the door 2 or move upwards to unlock the door 2.

The operation panel 17 may be a touch panel or a key panel, and the corresponding door opening signal for controlling the door 2 to be unlocked or the corresponding door closing signal for controlling the door 2 to be opened and locked may be formed by touching the operation panel 17 or pressing the operation panel 17.

Referring to fig. 1 to 3, in some embodiments, an interactive module 19 is disposed on a front wall of the case 1, and a control board 18 is disposed in the case 1, where the control board 18 is in signal connection with the interactive module 19 and the driving unit 41. The interaction module 19 may adopt a camera interaction module 19 or a voice interaction module 19, the interaction module 19 may be capable of generating a door opening signal for controlling the unlocking of the door 2 or a door closing signal for controlling the opening and locking of the door 2 by collecting signals such as images, gestures or voices, and the interaction module 19 may be capable of transmitting the door opening and closing signal to the control board 18. The control board 18 can control the driving unit 41 to work according to the door opening signal collected by the interaction module 19, so as to control the driving unit 41 to drive the telescopic rod 42 to move downwards to lock the door 2 or move upwards to unlock the door 2.

While the utility model has been described with reference to several exemplary embodiments, it is to be understood that the terminology used is intended to be in the nature of words of description and of limitation. As the present utility model may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims (10)

1. A household appliance, comprising:

a case forming a housing outside the home appliance; an inner cavity is formed in the box body, and an opening communicated with the inner cavity is formed in the front side of the box body;

the box door is arranged at the front side of the box body and is used for opening and closing the opening; the top surface of the box door is provided with a telescopic opening;

a door lock mechanism for locking or unlocking the door, the door lock mechanism comprising:

the telescopic rod is movably arranged above the telescopic opening;

the driving unit is arranged in the box body, is connected with the telescopic rod and is used for driving the telescopic rod to extend and retract up and down;

the sliding block is slidably arranged at the telescopic opening, and a locking groove is concavely formed in the top surface of the sliding block; the sliding block can slide towards the inner side of the telescopic opening under the action of external force, so that the sliding block is retracted into the telescopic opening;

the return spring is connected with the sliding block and can drive the sliding block to slide towards the outer side of the telescopic opening so that the sliding block protrudes out of the telescopic opening;

when the opening is closed by the box door, the telescopic rod and the locking groove are vertically and oppositely arranged, and the driving unit can drive the telescopic rod to move downwards, so that the bottom end of the telescopic rod is clamped in the locking groove to lock the box door; and the driving unit can drive the telescopic rod to move upwards, so that the bottom end of the telescopic rod is separated from the locking groove, and the door is unlocked.

2. The household appliance according to claim 1, wherein a guide slope is provided on a side of the top of the slider facing the case, the guide slope extending obliquely upward in a direction away from the case;

in the process of closing the box door, the guide inclined plane can prop against the bottom end of the telescopic rod, so that the sliding block can slide towards the inner side of the telescopic opening under the extrusion action of the telescopic rod.

3. The household appliance according to claim 1, wherein the bottom of the slider is convexly provided with a guide post extending downwards, and the extending direction of the guide post is consistent with the sliding direction of the slider;

the box door is internally provided with a guide sliding hole which is arranged opposite to the guide column, and the lower end of the guide column is slidably inserted into the guide sliding hole.

4. A household appliance as claimed in claim 3, wherein a limiting plate is arranged in the box door, the limiting plate is arranged below the telescopic opening at intervals, and the guide slide Kong Kaishe is arranged on the limiting plate;

the lower end of the guide post movably penetrates through the guide sliding hole;

the reset spring is sleeved on the periphery of the guide post, the top end of the reset spring is propped against the bottom of the sliding block, and the bottom end of the reset spring is propped against the limiting plate.

5. The household appliance according to claim 4, wherein a limit rib arranged around the telescopic opening is arranged in the box door, and the limit rib is formed by extending downwards along the peripheral edge of the telescopic opening;

the limiting plate is detachably fixed on the bottom surface of the limiting rib, a limiting cavity is formed by enclosing between the limiting plate and the limiting rib, and the top of the limiting cavity is communicated with the telescopic opening;

the sliding block is slidably arranged in the limiting cavity.

6. The household appliance according to claim 5, wherein a step part is formed between the top of the limit rib and the peripheral edge of the telescopic opening;

a limiting ring is convexly arranged on the peripheral side wall of the sliding block, the limiting ring is arranged in the limiting cavity, and the limiting ring can prop against the step part;

when the limiting ring is propped against the step part, the top of the sliding block protrudes out of the telescopic opening.

7. The household appliance according to claim 1, wherein an operation panel is provided on a front wall of the case, a control board is provided in the case, and the control board is respectively connected with the operation panel and the driving unit in a signal manner;

The control panel can control the driving unit to work according to the door opening and closing signal generated by the operation panel so as to control the driving unit to drive the telescopic rod to move upwards or downwards.

8. The household appliance according to claim 1, wherein an interactive module is arranged on the front wall of the box body, and a control board is arranged in the box body and is respectively connected with the interactive module and the driving unit in a signal manner;

the interaction module can collect door opening and closing signals, and the control board can control the driving unit to work according to the door opening and closing signals collected by the interaction module so as to control the driving unit to drive the telescopic rod to move upwards or downwards.

9. The household appliance of claim 1, further comprising a hinge assembly disposed between a bottom of the door and a bottom of the front wall of the cabinet;

the hinge assembly has a first shaft member and a first elastic member; the hinge assembly can perform opening and closing actions by taking the first shaft as an axis, so that the box door can be opened or closed relative to the box body by taking the first shaft as an axis;

When the box door is in a closed state, the first elastic piece is deformed and forms elastic force;

when the telescopic rod is clamped with the locking groove, the box door is in a locking state, and the first elastic piece can keep elastic force;

when the telescopic rod is separated from the locking groove, the box door is in an unlocking state, and the elastic force of the first elastic piece can drive the box door to open relative to the box body by taking the first shaft piece as a shaft, so that the box door is automatically opened.

10. The household appliance of claim 9, wherein the hinge assembly further comprises a fixture, a mount, and a connector;

the fixing piece is fixed on the front wall of the box body;

the mounting seat is fixed in the box door, the bottom end of the mounting seat is hinged to the bottom end of the fixing piece through the first shaft piece, and the mounting seat can be opened and closed relative to the fixing piece by taking the first shaft piece as an axis;

one end of the connecting piece is rotatably connected to the fixing piece through a second shaft piece, and the second shaft piece is arranged on the upper side of the first shaft piece at intervals; the other end of the connecting piece is slidably connected to the mounting seat through a third shaft piece;

The first elastic piece is a first spring, the first elastic piece is arranged in the mounting seat, one end of the first spring abuts against the third shaft piece, and the other end of the first spring abuts against the inside of the mounting seat;

when the door is closed, the third shaft member can move away from the first shaft member, and the first spring is compressed, so that the first spring forms the elastic force.