CN219910444U

CN219910444U - Household appliance

Info

Publication number: CN219910444U
Application number: CN202320927613.4U
Authority: CN
Inventors: 王仁华; 马斌; 刘文涛
Original assignee: Hisense Home Appliances Group Co Ltd
Current assignee: Hisense Home Appliances Group Co Ltd
Priority date: 2023-04-21
Filing date: 2023-04-21
Publication date: 2023-10-27
Anticipated expiration: 2033-04-21

Abstract

The present utility model relates to a household appliance comprising: a case; a door; the hinge assembly includes: the fixing piece is fixed on the front wall of the box body; the bottom end of the mounting seat is hinged to the bottom end of the fixing piece through a first shaft piece; one end of the connecting piece is rotationally connected with the fixing piece through the second shaft piece; the other end of the connecting piece is connected with the mounting seat in a sliding way through a third shaft piece; the first elastic piece is connected with the third shaft piece; when the door is closed, the third shaft piece can move in a direction away from the first shaft piece, so that the first elastic piece forms elastic force; when the door is kept in a closed state, the first elastic piece can keep elastic force; when the box door needs to be opened, the elastic force can drive the third shaft piece to move towards the direction close to the first shaft piece, so that the box door is automatically opened by a certain angle, and then the box door can be automatically opened by the gravity of the box door, so that the automatic door opening function of the household appliance is realized.

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 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.

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 and realize the automatic door opening function of the household appliance.

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 hinge subassembly is located the chamber door with between the box, the hinge subassembly includes: 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 a first shaft piece, and the mounting seat can open and close relative to the fixing piece by taking the first shaft piece as a shaft so as to open or close the box door; 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 arranged in the mounting seat and is connected with the third shaft piece; when the door is closed, the third shaft piece can move in a direction away from the first shaft piece, and the first elastic piece is deformed to form elastic force; the first elastic member is capable of maintaining the elastic force when the door is kept in a closed state; when the box door needs to be opened, the elastic force of the first elastic piece can drive the third shaft piece to move towards the direction close to the first shaft piece, so that the mounting seat takes the first shaft piece as a shaft to perform opening action relative to the fixing piece, and the box door is automatically opened.

In some embodiments of the present application, the first elastic member is a first spring, one end of the first spring abuts against the third shaft member, and the other end of the first spring abuts against the inside of the mounting seat; the third shaft member is capable of compressing the first spring when the door is closed, so that the first spring forms the elastic force.

In some embodiments of the application, the hinge assembly further comprises a drive rod and a second elastic member; the transmission rod extends into the mounting seat from the end part, far away from the first shaft piece, of the mounting seat to be connected with the third shaft piece, and the transmission rod is slidably arranged on the mounting seat along the length direction of the transmission rod; one end of the second elastic piece is connected with the mounting seat, and the other end of the second elastic piece is connected with the transmission rod; when the box door is opened, the third shaft piece can push the transmission rod to move in the direction away from the first shaft piece, and the second elastic piece is deformed to form buffering force so as to slow down the speed of opening the door.

In some embodiments of the present application, the second elastic member is a second spring, one end of the transmission rod extends out of the mounting seat and extends in a direction away from the first shaft member, and one end of the transmission rod away from the first shaft member is provided with a limiting member; the second spring is sleeved on the transmission rod extending out of the mounting seat, one end of the second spring abuts against the end face of the mounting seat, and the other end of the second spring abuts against the limiting piece.

In some embodiments of the present application, a guide hole is formed on an end surface of the mounting seat far away from the first shaft element, the transmission rod extends into the mounting seat from the guide hole to be connected with the third shaft element, and the transmission rod movably penetrates into the guide hole.

In some embodiments of the present application, a portion of the transmission rod extending into the mounting seat is formed with a first mounting groove, the first mounting groove extends along a length direction of the transmission rod, and an end wall of the mounting seat far from the third shaft member is an end wall of the first mounting groove; the first elastic piece is arranged in the first mounting groove, and the end part, far away from the third shaft piece, of the first elastic piece is abutted against the end wall, far away from the first shaft piece, of the mounting seat.

In some embodiments of the present application, a limiting portion is disposed at an end of the first mounting groove near the third shaft, the limiting portion extends from the transmission rod into the first mounting groove and protrudes, and an end of the first elastic member near the third shaft abuts against the limiting portion.

In some embodiments of the present application, the hinge assembly further includes a buffer member, a second mounting groove is formed on a portion of the transmission rod extending out of the mounting seat, the second mounting groove extends along a length direction of the transmission rod, and the buffer member is disposed in the second mounting groove; when the box door is closed, the buffer piece and the mounting seat are arranged at intervals; when the opening angle of the box door is larger than a preset angle, the buffer piece can prop against the mounting seat and form buffer force so as to slow down the speed of opening the door.

In some embodiments of the present utility model, two transmission rods are provided, and the two transmission rods are arranged at intervals; the first mounting groove is formed in the interval area between the two transmission rods extending into the mounting seat, and the second mounting groove is formed in the interval area between the two transmission rods extending out of the mounting seat.

In some embodiments of the present utility model, a guide groove extending away from the first shaft member is formed on a side wall of the mounting seat, and the third shaft member is slidably disposed in the guide groove.

In some embodiments of the utility model, the household appliance further comprises a door lock mechanism, wherein the door lock mechanism is arranged in the box body; when the door is closed, the door lock mechanism can be clamped with the door so as to lock the door and keep the door in a closed state; and the door lock mechanism can be separated from the door so as to unlock the door, so that the door can be automatically opened under the action of the elastic force of the first elastic piece.

According to another aspect of the present utility model, there is also 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 hinge subassembly is located the chamber door with between the box, the hinge subassembly includes: 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 a first shaft piece, and the mounting seat can open and close relative to the fixing piece by taking the first shaft piece as a shaft so as to open or close the box door; the first elastic piece is arranged in the mounting seat and is used for providing door opening force so as to drive the mounting seat to open relative to the fixing piece; the second elastic piece is arranged in the mounting seat and is used for providing buffering force so as to prevent the mounting seat from opening relative to the fixing piece and slow down the door opening speed of the box door; the buffer piece is arranged in the mounting seat and is used for providing buffer force to prevent the mounting seat from opening relative to the fixing piece and reduce the door opening speed of the door to zero; when the door is closed, the first elastic piece is deformed and forms elastic force; and when the door is kept in a closed state, the first elastic member can maintain the elastic force; the opening process of the box door comprises a first stage, a second stage and a third stage; in the first stage, the elastic force of the first elastic piece can drive the mounting seat to perform an opening action relative to the fixing piece by taking the first shaft piece as a shaft, so that the box door is automatically opened to a first preset angle; and in the first step, the second elastic member does not provide a door opening force, and the cushioning member does not provide a cushioning force; in the second stage, the door can be continuously opened to a second preset angle under the action of self gravity; in the second stage, the elastic force provided by the first elastic piece disappears, and the buffer force provided by the second elastic piece gradually increases; in the third stage, the box door is continuously opened to a third preset angle under the action of gravity; and in the third stage, the buffer force provided by the second elastic piece and the buffer piece is gradually increased.

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 provided by the embodiment of the utility model, the hinge assembly is arranged between the box door and the box body so as to realize the opening or closing of the box door; the hinge assembly comprises a fixing piece, an installation seat, a connecting piece and a first elastic piece, wherein the fixing piece and the installation seat are respectively fixed on a box body and a box door, the first shaft piece is matched for hinging, the box door can be opened and closed, meanwhile, the connecting piece and the first elastic piece are used for matching, when the box door is closed, the third shaft piece can move towards the direction far away from the first shaft piece, the first elastic piece is deformed and forms elastic force, the box door is kept in a closed state, the elastic force of the first elastic piece is further kept, when the box door needs to be opened, the elastic force of the first elastic piece is used for driving the third shaft piece to move towards the direction close to the first shaft piece, so that the installation seat can be opened by a certain angle by taking the first shaft piece as a relatively fixed piece, the box door can be opened automatically, and then the box door can be opened automatically by utilizing the gravity of the box door, and the automatic door opening function of a household appliance can be realized.

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 door lock mechanism of fig. 17.

Fig. 19 is an exploded view of fig. 18.

Fig. 20 is a schematic cross-sectional view of the area of fig. 17.

Fig. 21 is a schematic view of the structure of fig. 20 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; 2. a door; 21. a door panel; 22. an inner layer plate; 23. a cover; 231. a receiving groove; 24. a locking groove; 3. a hinge assembly; 231. 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 fixing frame; 411. a rotating groove; 412. a movable cavity; 413. a guide sleeve; 4131. a chute; 42. a lock lever; 421. a hook part; 422. a rotating part; 423. a linkage shaft; 43. a slide block; 431. a guide post; 432. a clamping groove; 433. a linkage groove; 434. a limit sleeve; 44. a driving unit; 441. an output shaft; 45. a return spring; 46. and (3) a torsion 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 utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element 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 utility model.

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 utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present utility model, 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 above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

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.

In some embodiments, a cover 23 is provided in the door 2, the cover 23 is fixed to the back side of the door panel 21, and the inner layer plate 22 is covered on 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.

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 can be used as a door opening force to drive the third shaft member 332 to move towards the direction close to the first shaft member 321, so that the mounting seat 31 can be opened relative to the fixing member 32 by taking 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 stages of the door closing process, the elastic force provided by the second elastic member 36 may form a door closing force to assist the door closing.

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 door lock mechanism 4 in fig. 17. Fig. 19 is an exploded view of fig. 18.

Referring to fig. 17 to 19, and referring to fig. 1 to 3, in some embodiments, the door lock mechanism 4 is disposed in the case 1 and above the top of the inner container 11, that is, the door lock mechanism 4 is located above the top of the inner cavity 10, and the door lock mechanism 4 is used to be engaged with or disengaged 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.

In other embodiments, the door lock mechanism 4 may be disposed in other areas outside the inner cavity 10, where the door lock mechanism 4 is used to lock or unlock the door 2 by being engaged with or disengaged from other side areas of the door 2.

In some embodiments, the top surface of the door 2 is recessed with a locking groove 24. When the door lock mechanism 4 is engaged with the lock groove 24, the door 2 is locked. When the door lock mechanism 4 is separated from the lock groove 24, the door 2 is in an unlocked state.

In other embodiments, the locking groove 24 may be provided on other side walls of the door 2 facing the front opening of the case 1, for example, the locking groove 24 may be provided on left and right side walls of the door 2.

Referring to fig. 17 to 19, in some embodiments, the door lock mechanism 4 includes a fixing frame 41, a lock lever 42, a slider 43, and a driving unit 44.

The fixing frame 41 is disposed in the case 1 and above the liner 11. The fixing frame 41 is used to provide installation space for the lock lever 42, the slider 43, the driving unit 44, the return spring 45, the torsion spring 46, and the like.

In some embodiments, the fixing frame 41 is disposed above the supporting top plate 14, and the bottom surface of the fixing frame 41 is fixedly connected to the top surface of the supporting top plate 14 and disposed on a side of the supporting top plate 14 closer to the door 2, so that the fixing frame 41 can be fixed in the case 1, disposed on the back side of the door 2, and disposed close to the door 2.

Fig. 20 is a schematic cross-sectional view of the area of fig. 17. Fig. 21 is a schematic view of the structure of fig. 20 in another state.

Referring to fig. 17 to 21, in some embodiments, the lock lever 42 is rotatably disposed on the fixing frame 41, the front end of the lock lever 42 is a first end, the first end of the lock lever 42 extends into the top edge of the front opening of the case 1, the first end of the lock lever 42 is provided with a hook 421, and the hook 421 is bent downward from the first end of the lock lever 42. When the door 2 is in the closed state, the hook 421 and the locking groove 24 are disposed vertically. Accordingly, the lock lever 42 can be rotated forward with respect to the fixing frame 41, so that the hook 421 moves downward to be engaged with the lock groove 24, thereby locking the door 2, and the first elastic member 34 of the hinge assembly 3 can be kept in an elastic force when the door 2 is locked. Meanwhile, the lock lever 42 can rotate reversely relative to the fixing frame 41, so that the hook portion 421 moves upwards to be separated from the locking groove 24, and then the door 2 is unlocked, and when the door 2 is unlocked, the elastic force of the first elastic member 34 can provide a door opening force, and the door 2 can be driven to open relative to the box 1 by the elastic force by taking the first shaft member 321 as a shaft, so that the door 2 is automatically opened.

In other embodiments, when the locking groove 24 is formed on the left side wall or the right side wall of the door 2, the fixing frame 41 and the locking bar 42 are formed in the box 1 at a region near the locking groove 24, the first end of the locking bar 42 extends into the left edge or the right edge of the front opening, and the hook 421 extends from the first end of the locking bar 42 toward the opening center, so that the hook 421 can be disposed opposite to the locking groove 24, and the hook 421 is engaged with or separated from the locking groove 24.

In some embodiments, the fixing frame 41 is provided with a rotating slot 411, the lock lever 42 is rotatably disposed in the rotating slot 411, and the front end of the lock lever 42 extends out of the rotating slot 411 and into the side edge of the front opening of the case 1, so that the hook 421 is disposed opposite to the lock slot 24.

In some embodiments, the middle portion of the lock lever 42 is provided with a rotating portion 422, a first end of the lock lever 42 is located at a front side of the rotating portion 422, the hook portion 421 is located at a front side of the rotating portion 422 at intervals, and a second end of the lock lever 42 is located at a rear side of the rotating portion 422. The rotating portion 422 is rotatably provided on a side wall of the rotating slot 411, and thus the lock lever 42 can be rotatably connected to the fixing frame 41 through the rotating portion 422 and rotated in the forward or reverse direction in the rotating slot 411.

Referring to fig. 17-21, in some embodiments, a slider 43 is slidably disposed within the holder 41, the slider 43 being coupled to the second end of the locking lever 42. The slider 43 can slide up and down in the fixing frame 41, and then the first end of the lock lever 42 is driven by the slider 43 to rotate downward or upward, so that the hook 421 moves downward to be clamped with the locking groove 24 or moves upward to be separated from the locking groove 24, and the door 2 is locked or unlocked.

It should be noted that, in other embodiments, when the latch slot 24 and the door lock assembly are disposed on other side walls of the door 2, the slider 43 can also move in other directions in a forward or reverse direction, and the slider 43 drives the lock lever 42 to rotate in a forward or reverse direction, so that the hook 421 is engaged with or separated from the latch slot 24, and the door 2 is locked or unlocked.

In some embodiments, a movable cavity 412 is disposed in the fixed frame 41, the movable cavity 412 is in communication with the rotating slot 411, and the slider 43 is slidably disposed in the movable cavity 412. When the lock lever 42 is rotatably connected in the rotation slot 411, the second end of the lock lever 42 can extend into the movable cavity 412 to be connected with the slider 43. Therefore, when the sliding block 43 slides up or down in the movable cavity 412, the sliding block 43 can drive the lock lever 42 to rotate forward or backward in the rotating slot 411, so that the hook 421 is engaged with or separated from the locking slot 24.

Referring to fig. 17 to 21, in some embodiments, a guide post 431 extending downward is protruding from the bottom of the slider 43, a guide sleeve 413 is disposed in the fixing frame 41, the guide sleeve 413 is formed by extending upward from the bottom surface of the movable cavity 412, and a vertically extending chute 4131 is disposed in the guide sleeve 413. The lower end of the guide post 431 is slidably inserted into the sliding groove 4131, and the guide post 431 can slide up and down along the sliding groove 4131, so that the sliding block 43 can slide up and down in the movable cavity 412 along the extending direction of the sliding groove 4131.

In some embodiments, the guide posts 431 are provided in plurality, and the plurality of guide posts 431 are disposed at intervals at the bottom of the slider 43. Meanwhile, a plurality of guide sleeves 413 are arranged, the plurality of guide sleeves 413 are arranged under the plurality of guide posts 431 in a one-to-one correspondence manner, the guide posts 431 are inserted into the sliding grooves 4131 of the guide sleeves 413 in a one-to-one correspondence manner, and then the sliding blocks 43 can stably slide upwards or downwards along the sliding grooves 4131 in the movable cavity 412.

Referring to fig. 17 to 21, in some embodiments, a driving unit 44 is disposed on the fixing frame 41, and an output end of the driving unit 44 is connected to the slider 43. When the door 2 is in a closed state, the hook 421 is arranged opposite to the locking groove 24; the driving unit 44 can drive the sliding block 43 to slide forward or backward on the fixing frame 41 through the output end thereof, so as to drive the locking rod 42 to rotate forward or backward, and the hook 421 is clamped with or separated from the locking groove 24. Therefore, the hook 421 and the locking groove 24 can be controlled to be separated by the driving unit 44, so as to unlock the door 2, and the door 2 is driven to be opened automatically by the elastic force of the first elastic member 34, so that the door 2 can be opened automatically by matching with the gravity of the door 2.

In some embodiments, the drive unit 44 is a drive motor that is disposed above the top of the movable chamber 412. The bottom of the driving motor is provided with a downwardly extending output shaft 441, and the output shaft 441 of the driving motor extends into the movable cavity 412 and is connected with the sliding block 43. The output shaft 441 of the driving motor can extend up and down in the movable cavity 412, so that the driving slider 43 moves up and down in the movable cavity 412 along the extending direction of the sliding groove 4131, and drives the lock lever 42 to rotate forward or backward, so that the hook 421 is clamped with or separated from the locking groove 24, and the door 2 is locked or unlocked.

It should be noted that, in other embodiments, the driving motor may be disposed at the bottom area of the movable cavity 412 and below the top of the slider 43. In other embodiments, the drive unit 44 may also employ a drive element such as a telescoping cylinder.

In some embodiments, the top of the sliding block 43 is provided with a clamping groove 432, and the bottom end of the output shaft 441 of the driving motor is clamped in the clamping groove 432, so that when the output shaft 441 of the driving motor stretches up and down in the movable cavity 412, the output shaft 441 of the driving motor can drive the sliding block 43 to move up and down along the sliding groove 4131 in the movable cavity 412.

Referring to fig. 17 to 21, in some embodiments, a laterally extending linkage groove 433 is formed on the slider 43, a linkage shaft 423 is convexly formed on one side of the second end of the lock lever 42, and the linkage shaft 423 is disposed at a distance from the rear side of the rotating portion 422, that is, the linkage shaft 423 and the hook portion 421 are disposed on opposite sides of the rotating portion 422. The linkage shaft 423 is slidably inserted into the linkage groove 433.

When the driving unit 44 drives the slider 43 to slide up and down along the sliding groove 4131, the slider 43 can drive the linkage shaft 423 to move up or down through the linkage groove 433, so that the linkage shaft 423 moves laterally in the linkage groove 433, and the linkage shaft 423 drives the lock lever 42 to rotate forward or backward, so that the hook 421 can move down or up to be clamped with or separated from the locking groove 24, thereby locking or unlocking the door 2.

Referring to fig. 18 to 21, in some embodiments, the door lock mechanism 4 further includes a return spring 45, where the return spring 45 is sleeved on the outer periphery of the guide sleeve 413 and the guide post 431, the top end of the return spring 45 abuts against the bottom of the slider 43, and the bottom end of the return spring 45 abuts against the bottom of the movable cavity 412, that is, the bottom end of the return spring 45 abuts against the bottom area of the fixing frame 41. When the driving unit 44 drives the slider 43 to move downward along the chute 4131, the return spring 45 is compressed, and the return spring 45 forms an elastic restoring force. When the driving unit 44 drives the slider 43 to move upward along the sliding groove 4131, the elastic restoring force of the restoring spring 45 can assist in driving the slider 43 to move upward, improving the smoothness of the movement of the slider 43.

In some embodiments, the bottom of the slider 43 is convexly provided with a downward extending stop collar 434, and the stop collar 434 is annular and coaxially disposed around the circumference of the guide post 431. When the return spring 45 is sleeved on the peripheries of the guide post 431 and the guide sleeve 413, the top end of the return spring 45 can be limited inside the limit sleeve 434. And when the sliding block 43 slides downwards along the sliding groove 4131, the top end of the guide sleeve 413 can extend into the limit sleeve 434, so that the reset spring 45 is compressed and limited between the outside of the guide sleeve 413 and the inside of the limit sleeve 434, and the structural stability of the reset spring 45 is improved.

In some embodiments, the plurality of return springs 45 are provided, and the plurality of return springs 45 are sleeved on the outer circumference of the plurality of guide sleeves 413 in a one-to-one correspondence.

Referring to fig. 18 to 21, in some embodiments, the door lock mechanism 4 further includes a torsion spring 46, the torsion spring 46 is sleeved on the rotating portion 422, one end of the torsion spring 46 is connected to the lock lever 42, and the other end of the torsion spring 46 abuts against the fixing frame 41. The torsion spring 46 is used for providing torsion force, and the torsion force of the torsion spring 46 can drive the hook 421 to move downwards so as to drive the hook 421 to be clamped with the locking groove 24, thereby keeping the locking state of 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

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 hinge subassembly is located the chamber door with between the box, the hinge subassembly includes:

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 a first shaft piece, and the mounting seat can open and close relative to the fixing piece by taking the first shaft piece as a shaft so as to open or close the box door;

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 arranged in the mounting seat and is connected with the third shaft piece;

when the door is closed, the third shaft piece can move in a direction away from the first shaft piece, and the first elastic piece is deformed to form elastic force;

The first elastic member is capable of maintaining the elastic force when the door is kept in a closed state;

when the box door needs to be opened, the elastic force of the first elastic piece can drive the third shaft piece to move towards the direction close to the first shaft piece, so that the mounting seat takes the first shaft piece as a shaft to perform opening action relative to the fixing piece, and the box door is automatically opened.

2. The household appliance according to claim 1, wherein the first elastic member is a first spring, one end of the first spring abuts against the third shaft member, and the other end of the first spring abuts against the inside of the mounting seat;

the third shaft member is capable of compressing the first spring when the door is closed, so that the first spring forms the elastic force.

3. The household appliance of claim 1, wherein the hinge assembly further comprises a drive rod and a second elastic member;

the transmission rod extends into the mounting seat from the end part, far away from the first shaft piece, of the mounting seat to be connected with the third shaft piece, and the transmission rod is slidably arranged on the mounting seat along the length direction of the transmission rod;

one end of the second elastic piece is connected with the mounting seat, and the other end of the second elastic piece is connected with the transmission rod;

When the box door is opened, the third shaft piece can push the transmission rod to move in the direction away from the first shaft piece, and the second elastic piece is deformed to form buffering force so as to slow down the speed of opening the door.

4. A household appliance as claimed in claim 3, wherein the second elastic member is a second spring, one end of the transmission rod extends out of the mounting seat and extends in a direction away from the first shaft member, and one end of the transmission rod away from the first shaft member is provided with a limiting member;

the second spring is sleeved on the transmission rod extending out of the mounting seat, one end of the second spring abuts against the end face of the mounting seat, and the other end of the second spring abuts against the limiting piece.

5. A household appliance as claimed in claim 3, wherein a guide hole is formed in an end face of the mounting base far away from the first shaft member, the transmission rod extends into the mounting base from the guide hole to be connected with the third shaft member, and the transmission rod movably penetrates into the guide hole.

6. A household appliance as claimed in claim 3, wherein the portion of the transmission rod extending into the mounting seat is formed with a first mounting groove extending in a length direction of the transmission rod, and an end wall of the mounting seat remote from the third shaft member is an end wall of the first mounting groove;

The first elastic piece is arranged in the first mounting groove, and the end part, far away from the third shaft piece, of the first elastic piece is abutted against the end wall, far away from the first shaft piece, of the mounting seat.

7. The household appliance according to claim 6, wherein a limiting portion is arranged at one end of the first mounting groove, which is close to the third shaft, and the limiting portion extends from the transmission rod into the first mounting groove to protrude, and one end of the first elastic piece, which is close to the third shaft, abuts against the limiting portion.

8. The home appliance of claim 6, wherein the hinge assembly further comprises a buffer member, a portion of the driving lever extending out of the mounting seat is formed with a second mounting groove extending in a length direction of the driving lever, and the buffer member is provided in the second mounting groove;

when the box door is closed, the buffer piece and the mounting seat are arranged at intervals;

when the opening angle of the box door is larger than a preset angle, the buffer piece can prop against the mounting seat and form buffer force so as to slow down the speed of opening the door.

9. The household appliance according to claim 8, wherein two transmission rods are arranged at intervals;

The first mounting groove is formed in the interval area between the two transmission rods extending into the mounting seat, and the second mounting groove is formed in the interval area between the two transmission rods extending out of the mounting seat.

10. The household appliance according to claim 1, wherein a guide groove extending away from the first shaft member is formed in a side wall of the mounting seat, and the third shaft member is slidably disposed in the guide groove.

11. The household appliance of claim 1, further comprising a door lock mechanism disposed within the housing;

when the door is closed, the door lock mechanism can be clamped with the door so as to lock the door and keep the door in a closed state; and the door lock mechanism can be separated from the door so as to unlock the door, so that the door can be automatically opened under the action of the elastic force of the first elastic piece.

12. A household appliance, comprising:

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

the first elastic piece is arranged in the mounting seat and is used for providing door opening force so as to drive the mounting seat to open relative to the fixing piece;

the second elastic piece is arranged in the mounting seat and is used for providing buffering force so as to prevent the mounting seat from opening relative to the fixing piece and slow down the door opening speed of the box door;

the buffer piece is arranged in the mounting seat and is used for providing buffer force to prevent the mounting seat from opening relative to the fixing piece and reduce the door opening speed of the door to zero;

when the door is closed, the first elastic piece is deformed and forms elastic force; and when the door is kept in a closed state, the first elastic member can maintain the elastic force;

The opening process of the box door comprises a first stage, a second stage and a third stage;

in the first stage, the elastic force of the first elastic piece can drive the mounting seat to perform an opening action relative to the fixing piece by taking the first shaft piece as a shaft, so that the box door is automatically opened to a first preset angle; and in the first step, the second elastic member does not provide a door opening force, and the cushioning member does not provide a cushioning force;

in the second stage, the door can be continuously opened to a second preset angle under the action of self gravity; in the second stage, the elastic force provided by the first elastic piece disappears, and the buffer force provided by the second elastic piece gradually increases;

in the third stage, the box door is continuously opened to a third preset angle under the action of gravity; and is also provided with

In the third stage, the buffering force provided by the second elastic piece and the buffering piece is gradually increased.