Door opening and closing device, kitchen electric equipment and steaming and baking all-in-one machine

Abstract

The utility model relates to a door opening and closing device, kitchen electric equipment and a steaming and baking all-in-one machine. The door opening and closing device comprises an elastic part and a driving assembly. The elastic piece is provided with a first connecting structure and a second connecting structure, the first connecting structure and the second connecting structure are spaced in the elastic deformation direction of the elastic piece, and the first connecting structure is used for being in transmission connection with the door body. The driving assembly is connected with the second connecting structure and is configured to drive the elastic piece to drive the door body to be closed. According to the door opening and closing device, due to the fact that closing of the door body is achieved under driving of the elastic piece, a user can also apply external force to the door body to overcome the elastic force, and manual door opening is achieved. Therefore, even if the driving assembly cannot work normally due to power failure, the door opening and closing device can enable the door body to be opened normally.

Description

Technical Field

[0001] The present application relates to the technical field of door opening and closing, and particularly to a door switch device, a kitchen electric appliance, and a steam cooking and baking integrated machine. Background Art

[0002] Many devices are equipped with openable and closable doors. For ease of use, many of these doors use hinge devices that can achieve automatic opening and closing, which can both open and close the door automatically.

[0003] However, such hinge devices for automatic opening and closing rely on electric drive, which means they have significant limitations in use. Once the device loses power, it is very difficult for users to manually open it, causing great inconvenience to users. Summary of the Utility Model

[0004] Based on this, it is necessary to provide a door switch device, a kitchen electric appliance, and a steam cooking and baking integrated machine that can be manually opened after automatic closing in view of the above problems.

[0005] A door switch device, the door switch device includes:

[0006] An elastic member having a first connection structure and a second connection structure, and the first connection structure and the second connection structure are spaced apart in the elastic deformation direction of the elastic member, and the first connection structure is used for transmission connection with the door body;

[0007] A drive assembly connected to the second connection structure and configured to be able to drive the elastic member to drive the door body to close.

[0008] In one embodiment, the door switch device further includes a rotating arm and a mounting base. The rotating arm is used to connect the door body and is rotatably connected to the mounting base around a first direction. The mounting base is used to connect to the main body, and the door body switches relative to the main body; the first connection structure is in transmission connection with the rotating arm, and the drive assembly is configured to be able to drive the elastic member to drive the rotating arm to rotate relative to the mounting base.

[0009] In one embodiment, the door switch device further includes a transmission mechanism. The first connection structure is in transmission connection with the rotating arm through the transmission mechanism; the transmission mechanism includes a connecting rod, and the connecting rod is respectively rotatably connected to the first connection structure and the rotating arm around the first direction, and the connection position is spaced apart from the position where the rotating arm is rotatably connected to the mounting base.

[0010] In one embodiment, the driving assembly includes a driving motor and a sliding bracket. The sliding bracket is disposed on the mounting base and at an end of the connecting rod away from the rotating arm, and is configured to be able to slide along the mounting base under the drive of the driving motor, and be able to abut against the connecting rod on its moving path, and push the connecting rod to drive the door body to open.

[0011] In one embodiment, the transmission mechanism further includes a swing rod. The swing rod is rotatably connected to the mounting base around the first direction at its first position, rotatably connected to the connecting rod around the first direction at its second position, and rotatably connected to the first connection structure around the first direction at its third position. The first position, the second position, and the third position are spaced from each other.

[0012] In one embodiment, the driving assembly includes a driving motor, a lead screw, and a driving nut. The driving motor is in transmission connection with the lead screw, and the driving nut is sleeved on the lead screw and connected to the second connection structure.

[0013] In one embodiment, the mounting base has a mounting groove and two end fixing brackets. The two end fixing brackets are spaced apart in the mounting groove, and both ends of the lead screw in the axial direction are rotatably passed through the two end fixing brackets respectively;

[0014] The driving assembly further includes a sliding bracket. The sliding bracket is non-rotatably disposed in the mounting groove around the axis of the lead screw, and is configured to be able to slide in the mounting groove along the axial direction of the lead screw. The driving nut is disposed on the sliding bracket.

[0015] In one embodiment, the door switch device further includes a limiting member. The limiting member is at least partially located between the lead screw and the bottom of the groove of the mounting base, and is parallel to the bottom of the groove and spaced to form a rolling space;

[0016] The sliding bracket includes a frame body and rollers. The driving nut is disposed on the frame body; the rollers are disposed at the bottom of the frame body and are located in the rolling space.

[0017] In one embodiment, the limiting member has a limiting portion and two flanges. The limiting portion is parallel to the bottom of the groove and spaced to form a rolling space. The two flanges are disposed at both ends of the limiting portion. The limiting member is respectively lapped on the two end fixing brackets through the two flanges, and the two flanges have through holes for the lead screw to pass through.

[0018] In one embodiment, the frame body includes a roller shaft, a mating shaft, and two structural pieces. The roller shaft and the mating shaft are disposed between the two structural pieces;

[0019] In the depth direction of the installation groove, the roller is arranged at the bottom of the two structural sheets and is used for installing the roller wheel, and the mating shaft is arranged at the top of the two structural sheets and is used for connecting the second connection structure; and / or, a part of the top of the two structural sheets is recessed to form an installation position for installing the drive nut.

[0020] In one embodiment, the elastic member is a tension spring, and the first connection structure and the second connection structure are respectively hooks located at two ends of the elastic member in the longitudinal direction.

[0021] A kitchen electric appliance includes the above-mentioned door switch device.

[0022] A steam and barbecue integrated machine includes the above-mentioned door switch device.

[0023] For the above-mentioned door switch device, since the closing of the door body is realized under the drive of the elastic member, therefore, the user can also apply an external force to the door body to overcome the elastic force to realize manual door opening. Therefore, even if a power failure occurs and the drive assembly cannot work normally, the door switch device can still enable the door body to be normally opened. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 It is a schematic structural diagram of the door switch device in an embodiment of the present application.

[0026] Figure 2 It is Figure 1 an exploded structural diagram of the door switch device shown.

[0027] Figure 3 It is Figure 1 an enlarged structural diagram of the door switch device shown at A.

[0028] Figure 4 It is Figure 1 an enlarged structural diagram of the door switch device shown at B.

[0029] Figure 5 It is Figure 1 a partial sectional structural diagram of the door switch device shown.

[0030] Figure 6 It is Figure 1Top view of the door switch device shown

[0031] Figure 7 is Figure 1 Schematic cross-sectional structure diagram of the door switch device shown

[0032] Figure 8 is Figure 7 Schematic cross-sectional structure diagram of the door switch device shown at C-C

[0033] Figure 9 is Figure 7 Schematic cross-sectional structure diagram of the door switch device shown at D

[0034] Figure 10 is Figure 1 Schematic partial sectional structure diagram of the door switch device during the process of automatically closing the door body

[0035] Figure 11 is Figure 1 Schematic partial sectional structure diagram of the door switch device when starting to automatically open the door body

[0036] Figure 12 is Figure 1 Schematic partial sectional structure diagram of the door switch device during the process of automatically opening the door body

[0037] Explanation of reference numerals: 100, door switch device; 10, elastic member; 11, first connection structure; 12, second connection structure; 20, drive assembly; 21, drive motor; 22, sliding bracket; 221, frame body; 2211, roller; 2212, mating shaft; 2213, structural piece; 2214, installation card position; 222, roller; 23, lead screw; 231, drive shaft sleeve; 24, drive nut; 30, rotating arm; 40, mounting base; 41, first rotating shaft; 42, second rotating shaft; 43, installation groove; 44, end fixing frame; 45, fixing ear; 46, screw; 47, bushing; 48, washer; 49, elastic snap ring; 50, transmission mechanism; 51, connecting rod; 52, swing rod; 521, third rotating shaft; 522, fourth rotating shaft; 60, limiting member; 61, rolling space; 62, limiting portion; 63, folded edge; 631, through hole; 201, door body; 202, main body Detailed implementation manners

[0038] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the specific embodiments of the present application in detail with reference to the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0039] In the description of the present application, it should be understood that if terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present application.

[0040] In addition, if the term "and / or" appears, "and / or" is merely a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after. If terms such as "first" and "second" appear, these terms are only for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present application, if the term "plural" appears, the meaning of "plural" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0041] In the present application, unless otherwise clearly defined and limited, if terms such as "install", "connect", "join", "fix", etc. appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0042] In this application, unless otherwise clearly defined and limited, if there is a description such as a first feature being "on" or "under" a second feature, its meaning can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

[0043] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0044] Please refer to Figures 1 to 2 , a door switch device 100 provided by an embodiment of the present application includes an elastic member 10 and a driving assembly 20. The elastic member 10 has a first connection structure 11 and a second connection structure 12, and the first connection structure 11 and the second connection structure 12 are spaced apart in the elastic deformation direction of the elastic member 10. The first connection structure 11 is used for driving connection with a door body 201. The driving assembly 20 is connected to the second connection structure 12 and is configured to be able to drive the elastic member 10 to drive the door body 201 to close.

[0045] The door switch device 100 is used to realize the opening and closing of the door body 201 relative to the main body 202. Specifically, the driving assembly 20 is used to connect to the main body 202 and can drive the elastic member 10 to move away from the door body 201 and towards the inside of the main body 202, so as to pull the door body 201 to close on the main body 202 and realize the automatic closing of the door body 201. On the other hand, in order to realize the automatic door opening and closing function, the driving assembly 20 can also drive to realize the automatic opening of the door body 201, which will not be elaborated here.

[0046] The first connection structure 11 and the second connection structure 12 are spaced apart in the elastic deformation direction of the elastic member 10, indicating that the two can move away from each other with the deformation of the elastic member 10 under the action of an external force. Therefore, the door body 201 connected to the first connection structure 11 can move away from the door body 201 provided with the driving assembly 20 under the action of an external force and be opened.

[0047] It can be understood that when the door body 201 is closed, the elastic force generated by the elastic member 10 is sufficient to maintain the door body 201 in a closed state in the absence of external force. On the other hand, the elastic force can also be overcome by the external force input by the user so that the door body 201 can be opened by the user.

[0048] In the above-mentioned door switch device 100, since the closing of the door body 201 is achieved under the drive of the elastic member 10, the user can also manually open the door by applying an external force to the door body 201 to overcome the elastic force. Therefore, even if a power failure occurs and the driving component 20 cannot work normally, the door switch device 100 can still enable the door body 201 to be opened normally.

[0049] In some embodiments, the elastic member 10 is a tension spring, and the first connection structure 11 and the second connection structure 12 are hooks located at two ends of the elastic member 10 in the longitudinal direction.

[0050] The tension spring is transmission-connected to the door body 201 via a hook at one end thereof, and cooperates with the driving component 20 via a hook at the other end thereof. When the driving component 20 drives one end of the tension spring away from the door body 201, the tension spring can generate a contraction elastic force between its two ends, and the elastic force is sufficient to drive the door body 201 to move in the closing direction. The driving component 20 can drive the tension spring until the door body 201 is completely closed.

[0051] In this way, the elastic member 10 has a simple structure, and the hooks at both ends thereof help to achieve quick assembly of the elastic member 10 .

[0052] Please also read Figures 5 to 6 In some embodiments, the door switch device 100 further includes a rotating arm 30 and a mounting base 40, wherein the rotating arm 30 is used to connect the door body 201 and rotate in a first direction (corresponding to Figure 5 The direction perpendicular to the paper and Figure 6 The first connection structure 11 of the elastic member 10 is connected to the rotating arm 30 in a transmission manner. The driving assembly 20 is configured to drive the elastic member 10 to drive the rotating arm 30 to rotate relative to the installation base 40, so as to drive the door body 201 to open and close relative to the main body 202 through the rotating arm 30.

[0053] The rotating arm 30 and the mounting base 40 can be rotatably connected by hinges, and are specifically hinged by a first rotating shaft 41. The rotating arm 30 and the mounting base 40 are correspondingly provided with shaft holes, and the rotating arm 30 can rotate around the rotating shaft in a plane perpendicular to the first direction. The door switch device 100 is an articulated device that can realize the hinge connection between the door body 201 and the main body 202. The rotating arm 30 is fixedly connected to the door body 201, and the mounting base 40 is fixedly connected to the main body 202. The driving component 20 drives the rotating arm 30 to rotate relative to the mounting base 40, that is, drives the door body 201 to open and close relative to the main body 202.

[0054] In addition, one end of the rotating arm 30 connected to the mounting base 40 can form a stop structure. When rotated to a certain angle, the stop structure can abut against the mounting base 40 to limit the rotation angle and meet the opening and closing angle requirements of the door body 201.

[0055] In this way, the door switch device 100 can act as a hinge between the door body 201 and the main body 202, and realize the opening and closing of the door body 201 by flipping. This switching method is simple and has a wide range of applicable scenarios.

[0056] Please also read Figure 7 In some embodiments, the door switch device 100 further includes a transmission mechanism 50, and the first connection structure 11 of the elastic member 10 is transmission-connected to the rotating arm 30 through the transmission mechanism 50. The transmission mechanism 50 includes a connecting rod 51, and the connecting rod 51 is respectively connected to the first connection structure 11 and the rotating arm 30 for rotation around the first direction, and the connection position is spaced from the position where the rotating arm 30 is rotationally connected to the mounting base 40.

[0057] In other words, the connecting rod 51 is connected to the first connecting structure 11 and the rotating arm 30 at different positions, respectively, and the rotating arm 30 is connected to the connecting rod 51 and the mounting base 40 at different positions, respectively, and the movement of the connecting rod 51 can be converted into the rotation of the rotating arm 30. Specifically, the rotating arm 30 is rotatably connected to the connecting rod 51 through the second rotating shaft 42, and the second rotating shaft 42 is configured to be arranged along the first direction and parallel to the first rotating shaft 41, and the rotating arm 30 and the connecting rod 51 are correspondingly provided with shaft holes.

[0058] In this way, when the driving assembly 20 drives the elastic member 10 to move, the elastic member 10 can drive the rotating arm 30 to rotate through the connecting rod 51 .

[0059] Furthermore, the transmission mechanism 50 also includes a rocker rod 52, which is rotationally connected to the mounting base 40 around a first direction at its first position, rotationally connected to the connecting rod 51 around the first direction at its second position, and rotationally connected to the first connecting structure 11 around the first direction at its third position, and the first position, the second position and the third position are arranged at intervals from each other.

[0060] Specifically, the swing rod 52 is rotationally connected to the mounting base 40 through the third rotating shaft 521, and is rotationally connected to the connecting rod 51 through the fourth rotating shaft 522. Both the third rotating shaft 521 and the fourth rotating shaft 522 are arranged along the first direction and are parallel to the first rotating shaft 41. The swing rod 52, the mounting bracket, and the connecting rod 51 are respectively provided with shaft holes. In addition, a hanging hole is formed in the swing rod 52, and the hook of the elastic member 10 passes through the hook hole to form a rotational connection with the swing rod 52. The first position and the third position are located at both ends of the swing rod 52 in the longitudinal direction, and the second position is located between the first position and the second position.

[0061] In this way, through the connection of the connecting rod 51, the rotating arm 30 and the swing rod 52 form a linkage mechanism, so that when one of them rotates and swings, the other will also be driven to swing and rotate. The swing rod 52 can improve the angle of the transmission connection between the elastic member 10 and the connecting rod 51, and can use the first position as a fulcrum, the second position as a resistance input point, and the third position as a power input point, and improve the force application effect of the elastic member 10 on the rotating arm 30 through appropriate configuration. Taking the second position being located between the first position and the second position as an example, the power input by the elastic member 10 can be amplified by the swing rod 52 to better drive the door body 201 to close.

[0062] In some embodiments, the driving assembly 20 includes a driving motor 21 and a sliding bracket 22. The sliding bracket 22 is arranged on the mounting base 40 and is located at one end of the connecting rod 51 away from the rotating arm 30, and is configured to be able to slide along the mounting base 40 under the drive of the driving motor 21, and can abut against the connecting rod 51 on its moving path and push the connecting rod 51 to drive the door body 201 to open.

[0063] The driving motor 21 can generate power, and its power can be used to drive the sliding bracket 22 to move, and can also be used to drive the elastic member 10 to move. That is, the driving motor 21 can be used for both the opening and closing of the door body 201.

[0064] One end of the connecting rod 51 in the longitudinal direction is rotationally connected to the rotating arm 30 through the second rotating shaft 42, and at the other end in the longitudinal direction, it can abut against the sliding bracket 22 when the driving assembly 20 drives the door body 201 to open. When the driving assembly 20 drives the door body 201 to open, the driving motor 21 can drive the sliding bracket 22 to move towards the door body 201. When the sliding bracket 22 abuts against the connecting rod 51, continuing to move towards the door body 201 can generate a thrust to push the connecting rod 51 to push the door body 201 to flip outwards and open.

[0065] In this way, the driving assembly 20 can apply a thrust to the door body 201 through the rigid connecting rod 51 to push the door body 201 to open automatically.

[0066] In some other embodiments, the driving assembly 20 can also achieve automatic door opening through driving elasticity, which is not specifically limited herein. Taking the downward opening of the door body 201 as an example, the driving assembly 20 can move the driving elastic member 10 towards the door body 201 to release the pulling force on the door body 201, so that the door body 201 can achieve automatic door opening under the action of gravity.

[0067] Please refer to Figure 8 as well. In some embodiments, the driving assembly 20 further includes a lead screw 23 and a driving nut 24. The driving motor 21 is in transmission connection with the lead screw 23. The driving nut 24 is sleeved on the lead screw 23 and is connected to the second connection structure 12 of the elastic member 10.

[0068] The driving motor 21 is configured to be able to drive the lead screw 23 to rotate around its own axis. When the lead screw 23 rotates under the drive of the driving motor 21, the driving nut 24 connected to the elastic member 10 thereon can move along the axis of the lead screw 23. It can be understood that in order to realize the driving of the elastic member 10 by the driving motor 21 through the driving nut 24, the axis of the lead screw 23 intersects with the first direction. Preferably, the axis of the lead screw 23 is perpendicular to the first direction.

[0069] Specifically, one end of the lead screw 23 is configured to be flat and is in transmission connection with the output shaft of the driving motor 21 through a transmission shaft sleeve 231. In addition, the driving motor 21 is configured to be able to drive the lead screw 23 to rotate around its own axis along the first rotation direction. When the lead screw 23 rotates along the first rotation direction, the driving nut 24 moves in a direction away from the door body 201 (as Figure 10 shown, the arrow in the figure is the moving direction), that is, the elastic member 10 is pulled into the interior of the main body 202, and the elastic member 10 is stretched to drive the door body 201 to close.

[0070] In this way, the driving nut 24 can drive the elastic member 10 to move through the second connection structure 12 under the drive of the driving motor 21 and the lead screw 23.

[0071] Please refer to Figure 3 and Figure 9 as well. In some embodiments, the mounting base 40 has a mounting groove 43 and two end fixing brackets 44. The two end fixing brackets 44 are spaced apart in the mounting groove 43. The two axial ends of the lead screw 23 are respectively rotatably inserted through the two end fixing brackets 44. The sliding bracket 22 is non-rotatably arranged in the mounting groove 43 around the axis of the lead screw 23 and is configured to be able to slide in the mounting groove 43 along the axis of the lead screw 23. The driving nut 24 is arranged on the sliding bracket 22, and the second connection structure 12 is connected to the sliding bracket 22.

[0072] The lead screw 23 can be rotatably arranged on the mounting base 40 through two end fixing brackets 44. One end of the mounting base 40 has a fixing ear 45, and the driving motor 21 can be fixed to one end of the mounting base 40 through screws 46 and the fixing ear 45. Specifically, the end fixing bracket 44 has an assembly hole. Bushings 47 or bearings are sleeved on both ends of the lead screw 23, and the lead screw 23 passes through the assembly hole through the bushings 47 or bearings. In addition, a washer 48 is sleeved on the outer end of the lead screw 23 passing through the end fixing bracket 44, and an elastic snap ring 49 is used to fix the washer 48 on the outside to prevent the lead screw 23 from axially moving.

[0073] The driving nut 24 is arranged on the sliding bracket 22. The sliding bracket 22 can prevent the driving nut 24 from rotating in the axial direction around the lead screw 23, so that when the lead screw 23 rotates, the driving nut 24 can efficiently move along the axial direction of the lead screw 23. At the same time, when the driving nut 24 moves along the lead screw 23, it can drive the sliding bracket 22 to slide along the axial direction of the lead screw 23.

[0074] The driving motor 21 is further configured to be able to drive the lead screw 23 to rotate around its own axis in the second rotation direction. When the lead screw 23 rotates in the second direction, the driving nut 24 moves in the direction close to the door body 201, that is, pushes the elastic member 10 towards the door body 201, so that the elastic member 10 contracts and the elastic force decreases. At the same time, the driving nut 24 also drives the sliding bracket 22 to move towards the door body 201, and after moving a certain distance, it abuts against one end of the connecting rod 51 (as Figure 11 and Figure 12 shown, the arrow in the figure indicates the moving direction). At this time, continuing to move can push the connecting rod 51 to drive the door body 201 to open.

[0075] In this way, the sliding bracket 22 that is non-rotatably arranged in the installation groove 43 can prevent the driving nut 24 from rolling around the axial direction of the lead screw 23 on the lead screw 23. At the same time, the driving nut 24 can drive the sliding bracket 22 to slide under the drive of the lead screw 23, and drive the door body 201 to open and close through the elastic member 10 and the transmission mechanism 50 through the sliding bracket 22.

[0076] Specifically, the width direction, height direction of the sliding bracket 22 and the axial direction of the lead screw 23 are perpendicular to each other in pairs. The height direction of the sliding bracket 22 is consistent with the groove depth direction of the installation groove 43. The width of the sliding bracket 22 is slightly smaller than the groove width of the installation groove 43, and the height of the sliding bracket 22 is greater than the groove width of the installation groove 43.

[0077] Please refer to Figure 4, in some embodiments, the door switch device 100 further includes a limiting member 60. The limiting member 60 is at least partially located between the lead screw 23 and the bottom of the groove of the mounting base 40, and is parallel to the bottom of the groove and spaced apart to form a rolling space 61. The sliding bracket 22 includes a bracket body 221 and rollers 222. The drive nut 24 is provided on the bracket body 221, and the second connection structure 12 connects the bracket body 221. The rollers 222 are provided at the bottom of the bracket body 221 and are located within the rolling space 61.

[0078] Understandably, the rollers 222 can roll along the axial direction of the lead screw 23, and the sliding bracket 22 slides within the mounting groove 43 along the axial direction of the lead screw 23 through its rollers 222.

[0079] In this way, the limiting member 60 can separate the rollers 222 from the lead screw 23, so that the rolling of the rollers 222 and the rotation of the lead screw 23 do not affect each other.

[0080] Further, the limiting member 60 has a limiting portion 62 and two flanges 63. The limiting portion 62 is parallel to the bottom of the mounting groove 43 and spaced apart to form a rolling space 61. The two flanges 63 are provided at both ends of the limiting portion 62. The limiting member 60 is respectively mounted on the two end fixing frames 44 through the two flanges 63, and the two flanges 63 have through holes 631 for the lead screw 23 to pass through.

[0081] Specifically, in the height direction of the sliding bracket 22, the limiting portion 62 is located between the lead screw 23 and the bottom of the mounting base 40. In the axial direction of the lead screw 23, the limiting portion 62 is located between the two end fixing frames 44. The through holes 631 on the flanges 63 extend to the top, and the top of the end fixing frame 44 is provided with a convex mating structure, and the convex mating structure can be in positioning cooperation with the through holes 631 extending to the top of the flanges 63.

[0082] In this way, the limiting member 60 is mounted on the two end fixing frames 44 through its flanges 63, so that its limiting portion 62 is parallel to and spaced apart from the bottom of the mounting groove 43.

[0083] In some embodiments, the bracket body 221 includes a roller shaft 2211, a mating shaft 2212, and two structural pieces 2213. The roller shaft 2211 and the mating shaft 2212 are provided between the two structural pieces 2213. In the depth direction of the mounting groove 43, the roller shaft 2211 is provided at the bottom of the two structural pieces 2213 and is used for mounting the rollers 222, and the mating shaft 2212 is provided at the top of the two structural pieces 2213 and is used for connecting the second connection structure 12 of the elastic member 10.

[0084] The rollers 222 located at the bottom can roll through the roller shaft 2211, and the elastic member 10 can be hung on the mating shaft 2212 through the second connection structure 12 serving as a hook.

[0085] In addition, the top parts of the two structural pieces 2213 are recessed to form mounting positions 2214 (as Figure 4 shown), the drive nut 24 is convex and is clamped in the mounting position 2214. In the width direction of the frame body 221, the lead screw 23 is located between the two structural pieces 2213, and in the depth direction of the mounting groove 43, the lead screw 23 is located between the roller 2211 and the mating shaft 2212. In other words, the two structural pieces 2213 pass through both sides of the lead screw 23 and the limiting member 60 in the width direction of the frame body 221. The tops of the two structural pieces 2213 cooperate with the drive nut 24 and the second connection structure 12, and the bottoms cooperate with the rollers 222.

[0086] In this way, the frame body 221 can be assembled with the roller 222 located below the limiting member 60, the drive nut 24 located above the limiting member 60, and the elastic member 10 at the same time.

[0087] It can be understood that in some other embodiments, the opening and closing of the door body 201 relative to the main body 202 can also be in forms such as sliding opening and closing, lifting up and down, etc. The door opening and closing device 100 only needs to be able to drive the door body 201 in the corresponding form, and no specific limitation is made here.

[0088] For the above-mentioned door opening and closing device 100, the rotating arm 30 is rotatably connected to the mounting base 40 through the first rotating shaft 41, and the rotating arm 30 can rotate around the rotating shaft in a plane perpendicular to the first direction. The connecting rod 51 is rotatably connected to the rotating arm 30 at another position through the second rotating shaft 42. At the same time, the connecting rod 51 is also rotatably connected to the swing rod 52 through the fourth rotating shaft 522, and the connection position is between the two ends of the connecting rod 51 and between the two ends of the swing rod 52. One end of the swing rod 52 is connected to the mounting base 40 through the lower third rotating shaft 521, and the swing rod 52 can rotate in a plane perpendicular to the first direction around the third rotating shaft 521. In this way, through the connection of the connecting rod 51, the rotating arm 30 and the swing rod 52 form a linkage mechanism, so that when one of them rotates and swings, the other will also be driven to swing and rotate. The door body 201 is fixedly connected to the rotating arm 30, and the mounting base 40 is fixed on the main body 202. When the rotating arm 30 rotates, the door body 201 is correspondingly driven to open or close.

[0089] The limiting member 60 is installed in the mounting groove 43 of the mounting base 40 and is fixed in the middle of the two end fixing frames 44. The folded edges 63 on both sides are placed on the two end fixing frames 44, and the convex mating structure can be positioned and mated with the through hole 631 extending to the top of the folded edge 63. The two ends of the lead screw 23 in the axial direction respectively pass through the through hole 631 and are rotatably arranged in the two end fixing frames 44. Bushings 47 are provided in the assembly holes of the two end fixing frames 44. The ends of the lead screw 23 are arranged in the bushings 47, and the exposed parts at both ends are sleeved with washers 48, and are fixed with elastic circlips 49 on the outer sides of the washers 48 to prevent the lead screw 23 from axially moving or disengaging.

[0090] The roller 222 is installed below the sliding bracket 22 and is located between the bottom surface of the limiting member 60 and the bottom of the installation groove 43. The lower end of the sliding bracket 22 is configured with a shaft hole, and a roller shaft 2211 that cooperates with the roller 222 is passed through. The roller 222 rotates with the roller shaft 2211 as the rotation axis. A mating shaft 2212 is installed on the upper part of the sliding bracket 22 as the anchor point of the second connection structure 12 of the elastic member 10.

[0091] The drive nut 24 is sleeved on the lead screw 23 and is stuck in the installation position 2214 on the sliding bracket 22. The drive motor 21 is fixed to one end of the installation base 40 by screws 46 and is connected to the tail end of the lead screw 23 by a transmission shaft sleeve 231.

[0092] When the drive motor 21 operates and the lead screw 23 is driven to rotate by the transmission shaft sleeve 231, the drive nut 24 sleeved on the lead screw 23 is stuck in the installation position 2214 of the sliding bracket 22 and cannot rotate, so it is axially pushed by the thread to move translationally, driving the sliding bracket 22 to move simultaneously, and moving forward or backward according to the forward and reverse operation of the drive motor 21.

[0093] The front end of the elastic member 10 hooks the hook hole at the upper end of the swing rod 52, and the rear end hooks the mating shaft 2212 installed at the upper end of the sliding bracket 22, and is stretched and elongated, giving the swing rod 52 a force towards the inside of the main body 202. Thus, through the connecting rod 51, the rotating arm 30 has a tendency to close the door body 201 on the main body 202 backward, forming the effect of closing and locking the door.

[0094] When the door body 201 is in the open or not fully closed state, when the drive motor 21 rotates the lead screw 23 to rotate in the first direction, the drive nut 24 and the sliding bracket 22 move away from the door body 201. The distance between the upper end of the swing rod 52 and the upper end of the sliding bracket 22 becomes larger, and the pulling force of the elastic member 10 also becomes larger, making the door body 201 have a tendency to close. Until after overcoming the gravity of the door body 201, the door body 201 is turned upward to be fully closed. Then, at the rear end, the sliding bracket 22 generates a pulling force through the elastic member 10 to tightly close the door body 201 on the main body 202.

[0095] When the door body 201 is in a closed or not fully opened state, when the driving motor 21 rotates the lead screw 23 in the second rotation direction, the driving nut 24 and the sliding bracket 22 move towards the direction close to the door body 201. The distance between the upper end of the swing rod 52 and the upper end of the sliding bracket 22 becomes smaller, and the tensile force of the elastic member 10 also becomes smaller, so that the force for locking the door body 201 when closing the door becomes smaller. When the front end of the sliding bracket 22 abuts against the rear end of the connecting rod 51, under the drive of the driving motor 21, the sliding bracket 22 applies a forward force to the connecting rod 51, thereby causing the rotating arm 30 to flip downward, opening the door body 201 until it is fully opened. During the movement of the sliding bracket 22, its roller 222 and the limiting member 60 can roll smoothly in the middle of the bottom of the installation groove 43. Among them, the driving motor 21 performs corresponding actions according to the commands of the relevant controller to complete the function of automatically opening and closing the door.

[0096] In this way, the door switch device 100 can realize the automatic opening and closing of the door body 201 relative to the main body 202. Even when the door body 201 is automatically closed by the door switch device 100 and a power failure or other faults occur, making the driving motor 21 unable to operate normally, the user can also manually overcome the elastic force exerted on the door body 201 by the elastic member 10 through the swing rod 52, the connecting rod 51 and the rotating arm 30 to realize manually opening the door body 201.

[0097] This application also provides a kitchen electric appliance, including the above-mentioned door switch device 100. In addition, the kitchen electric appliance further includes a door body 201 and a main body 202, and the door body 201 is switched relative to the main body 202 through the door switch device 100.

[0098] The kitchen electric appliance can be, but is not limited to, a microwave oven, a steam box, an oven, a dishwasher, etc., and no specific limitation is made here.

[0099] This application also provides a steam and grill integrated machine, including the above-mentioned door switch device 100.

[0100] The technical features of the above-mentioned embodiments can be combined arbitrarily. For the sake of brief description, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as these combinations of technical features do not conflict, they should be considered as the scope recorded in this specification.

[0101] The above-mentioned embodiments only express several implementation manners of this application. The description is relatively specific and detailed, but it cannot be understood as a limitation to the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of this application, several deformations and improvements can still be made, and these all belong to the protection scope of this application. Therefore, the protection scope of the patent of this application should be subject to the appended claims.

Claims

1. A door switch device, characterized in that, The door switch device includes: An elastic member (10) having a first connection structure (11) and a second connection structure (12), and the first connection structure (11) and the second connection structure (12) are spaced apart in the elastic deformation direction of the elastic member (10), and the first connection structure (11) is used for driving connection with a door body (201); A drive assembly (20) connected to the second connection structure (12) and configured to be able to drive the elastic member (10) to drive the door body (201) to close.

2. The door switch device according to claim 1, wherein, The door switch device further includes a rotating arm (30) and a mounting base (40). The rotating arm (30) is used for connecting the door body (201) and is rotatably connected to the mounting base (40) around a first direction. The mounting base (40) is used for connecting a main body (202), and the door body (201) switches relative to the main body (202); the first connection structure (11) is in driving connection with the rotating arm (30), and the drive assembly (20) is configured to be able to drive the elastic member (10) to drive the rotating arm (30) to rotate relative to the mounting base (40).

3. The door switch device according to claim 2, wherein The door switch device further includes a transmission mechanism (50). The first connection structure (11) is in driving connection with the rotating arm (30) through the transmission mechanism (50); the transmission mechanism (50) includes a connecting rod (51), and the connecting rod (51) is rotatably connected to the first connection structure (11) and the rotating arm (30) around the first direction respectively, and the connection positions are spaced apart from the position where the rotating arm (30) is rotatably connected to the mounting base (40).

4. The door switch device according to claim 3, characterized in that The drive assembly (20) includes a drive motor (21) and a sliding bracket (22). The sliding bracket (22) is arranged on the mounting base (40) and is located at one end of the connecting rod (51) away from the rotating arm (30), and is configured to be able to slide along the mounting base (40) under the drive of the drive motor (21), and be able to abut against the connecting rod (51) on its moving path and push the connecting rod (51) to drive the door body (201) to open.

5. The door switch device according to claim 3, characterized in that, The transmission mechanism (50) further includes a swing rod (52). The swing rod (52) is rotatably connected to the mounting base (40) around the first direction at its first position, rotatably connected to the connecting rod (51) around the first direction at its second position, and rotatably connected to the first connection structure (11) around the first direction at its third position. The first position, the second position, and the third position are spaced apart from each other.

6. The door switch device according to any one of claims 2-5, characterized in that, The drive assembly (20) includes a drive motor (21), a lead screw (23), and a drive nut (24). The drive motor (21) is in transmission connection with the lead screw (23), and the drive nut (24) is sleeved on the lead screw (23) and connected to the second connection structure (12).

7. The door switch device according to claim 6, characterized in that, The installation base body (40) has an installation groove (43) and two end fixing brackets (44). The two end fixing brackets (44) are arranged at intervals in the installation groove (43). The two ends of the lead screw (23) in the axial direction are respectively rotatably passed through the two end fixing brackets (44). The drive assembly (20) further includes a sliding bracket (22). The sliding bracket (22) is non-rotatably arranged in the installation groove (43) in the axial direction around the lead screw (23) and is configured to be able to slide in the installation groove (43) along the axial direction of the lead screw (23). The drive nut (24) is arranged on the sliding bracket (22).

8. The door switch device according to claim 7, characterized in that, The door switch device further includes a limiting member (60). The limiting member (60) is at least partially located between the lead screw (23) and the bottom of the installation groove of the installation base body (40), and is parallel to the bottom of the groove and spaced to form a rolling space (61). The sliding bracket (22) includes a bracket body (221) and rollers (222). The drive nut (24) is arranged on the bracket body (221). The rollers (222) are arranged at the bottom of the bracket body (221) and are located in the rolling space (61).

9. The door switch device according to claim 8, characterized in that, The limiting member (60) has a limiting portion (62) and two folded edges (63). The limiting portion (62) is parallel to the bottom of the groove and spaced to form a rolling space (61). The two folded edges (63) are arranged at both ends of the limiting portion (62). The limiting member (60) is respectively placed on the two end fixing brackets (44) through the two folded edges (63), and the two folded edges (63) have through holes (631) for the lead screw (23) to pass through.

10. The door switch device according to claim 8, characterized in that, The bracket body (221) includes a roller shaft (2211), a mating shaft (2212) and two structural sheets (2213). The roller shaft (2211) and the mating shaft (2212) are arranged between the two structural sheets (2213). In the depth direction of the installation groove (43), the roller shaft (2211) is arranged at the bottom of the two structural sheets (2213) and is used for installing the rollers (222). The mating shaft (2212) is arranged at the top of the two structural sheets (2213) and is used for connecting the second connection structure (12); and / or, the top parts of the two structural sheets (2213) are recessed inward to form an installation clamping position (2214), and the installation clamping position (2214) is used for installing the drive nut (24).

11. The door switch device according to claim 1, characterized in that, The elastic member (10) is a tension spring. The first connection structure (11) and the second connection structure (12) are respectively hooks located at both ends of the elastic member (10) in the longitudinal direction.

12. A kitchen electric appliance, characterized in that, It includes the door switch device according to any one of claims 1-11.

13. A steam and convection oven, characterized in that, It includes the door switch device according to any one of claims 1-11.

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