CN217760576U - Door body opening and closing device and electric appliance - Google Patents

Abstract

The utility model belongs to the technical field of electrical apparatus, concretely relates to door body device and electrical apparatus that opens and shuts aims at improving the problem that occupies too much storage space when the door body of electrical apparatus is opened to at least a certain extent. This door body device that opens and shuts is applicable to opening and shutting of the door body, the door body device that opens and shuts includes the assembly part, first pivot and second pivot, the assembly part is provided with the slide, the slide includes sharp slide and communicates the arc slide at the side of sharp slide, first pivot and second pivot are all connected on the door body, first pivot can reciprocating motion in sharp slide, the second pivot can reciprocating motion in sharp slide and arc slide, when first pivot slides to the tip of sharp slide, the second pivot can wind first pivot, slide to the arc slide in the follow sharp slide. The application provides a door body device that opens and shuts, the reducible storage space who occupies a body linear motion direction, and simple structure is compact, has fine practicality.

Description

Door body opening and closing device and electric appliance

Technical Field

The application belongs to the technical field of electrical apparatus, concretely relates to door body device and electrical apparatus that opens and shuts.

Background

Some electric appliances are provided with an openable door body, such as coffee makers, ovens, food processors, refrigerators and the like, and the door body needs to be operated to open the door body. However, the door body of the electric appliance in the prior art can occupy too much storage space when opened, so that the space for improvement is provided.

Disclosure of Invention

In order to solve the technical problem, the application provides a door body device and electrical apparatus that opens and shuts, aims at improving the problem that occupies too much storage space when the door body of electrical apparatus opens to at least a certain extent.

The technical scheme of the application is as follows:

firstly, this application provides a door body device that opens and shuts, its special character lies in, the door body device that opens and shuts is applicable to opening and shutting of the door body, the door body device that opens and shuts includes:

the assembly part is provided with a slide way, and the slide way comprises a linear slide way and an arc-shaped slide way communicated with the side edge of the linear slide way;

the first rotating shaft and the second rotating shaft are connected to the door body, the first rotating shaft can reciprocate in the linear slideway, and the second rotating shaft can reciprocate in the linear slideway and the arc slideway;

when the first rotating shaft slides to the end part of the linear slideway, the second rotating shaft can rotate around the first rotating shaft and slide to the arc slideway from the linear slideway.

According to the door body opening and closing device provided by the application, the slide way of the assembly part of the opening and closing device comprises a linear slide way and an arc slide way communicated with the side edge of the linear slide way, the first rotating shaft connected to the door body can reciprocate in the linear slide way, the second rotating shaft connected to the door body can reciprocate in the linear slide way and the arc slide way, when the first rotating shaft slides to the end part of the linear slide way, the second rotating shaft can rotate around the first rotating shaft and slide from the linear slide way to the arc slide way, namely after the first rotating shaft drives the door body to do linear movement, the door body and the second rotating shaft rotate around the first rotating shaft, meanwhile, the second rotating shaft slides from the linear slide way to the arc slide way, when the second rotating shaft rotates to the end part of the arc slide way at the arc slide way, the door body stops rotating, and at the moment, the door body keeps an opening state; when the door body needs to be closed, the door body is operated reversely, namely the door body is operated firstly to rotate around the first rotating shaft, when the second rotating shaft rotates to the linear slide way from the arc-shaped slide way, the door body cannot continue to rotate due to the fact that the linear slide way is limited to the rotation of the second rotating shaft, then the door body is pushed, the door body moves and resets in the linear slide way at the second rotating shaft and the first rotating shaft, and the door body can be closed conveniently and quickly.

The application provides a door body device that opens and shuts adopts linear motion and pivoted combination reciprocating motion to realize opening and shutting of a body, and the reducible storage space that occupies a body linear motion direction, simple structure is compact, has fine practicality.

In some embodiments, the side of the linear slide is provided with a notch, and the arc-shaped slide is communicated with the side of the linear slide through the notch.

In some embodiments, the arc chute has a central angle between 90 and 135 ° to limit the angle of rotation of the door body.

In some embodiments, the assembly is provided with a first side portion and a second side portion which are opposite to each other, the first side portion and the second side portion are both provided with the slide ways, and two ends of the first rotating shaft and the second rotating shaft are respectively connected in the slide ways on two sides in a sliding manner.

In some embodiments, the linear slides on the first side or/and the second side are hole-shaped, such that the first and second shafts can be fitted between the two slides by the hole-shaped linear slides;

and, the arc slide is the slot-like to improve the gliding reliability of first pivot and second pivot in the slide.

In some embodiments, the first side portion is located above the second side portion, the linear slideway on the first side portion is in a hole shape, the linear slideway on the second side portion is in a groove shape, the hole-shaped linear slideway is used for assembling the first rotating shaft and the second rotating shaft, and the groove-shaped linear slideway is used for supporting the first rotating shaft and the second rotating shaft so as to ensure the reliability of the sliding of the first rotating shaft and the second rotating shaft in the slideway.

In some embodiments, the door body opening and closing device further includes a connecting member, the first rotating shaft and the second rotating shaft are connected to the door body through the connecting member, and the connecting member can enter between the first side portion and the second side portion from the slide way on the first side portion.

In some embodiments, the assembly further includes a third side portion and a fourth side portion, the third side portion and the fourth side portion are disposed between the first side portion and the second side portion, the third side portion is provided with an operation hole, the fourth side portion is provided with an opening for passing the connecting piece, the door body is disposed on a side of the fourth side portion opposite to the third side portion, and the operation hole can be used for operating a bolt for connecting the door body and the connecting piece.

On the other hand, this application still provides an electrical apparatus, and its special character lies in, electrical apparatus includes the body and the door body, the body is provided with and is used for holding the holding chamber of the door body, the holding chamber is provided with the gate, the door body can open and shut through above-mentioned door body opening and closing device and connect on the gate in holding chamber.

When the door body of the electric appliance with the door body opening and closing device is opened, the accommodating space occupying the linear motion direction of the door body can be reduced, and the electric appliance has good practicability.

In some embodiments, the accommodating cavity is provided with a first side wall and a second side wall which are opposite to each other, the assembly part is connected to the first side wall, and the second side wall is provided with a sliding groove for the linear reciprocating movement of the door body.

In some embodiments, the appliance is a coffee maker, an oven, a food processor, or a refrigerator.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

In the drawings:

FIG. 1 is a schematic diagram of an electrical appliance;

FIG. 2 isbase:Sub>A schematic sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic view of the fitting of FIG. 1;

FIG. 4 is a schematic view of the connector of FIG. 1;

FIG. 5 is a schematic view of an initial state of rotation of the door body;

FIG. 6 is a schematic cross-sectional view taken along line B-B of FIG. 5;

FIG. 7 is a schematic view showing an opened state of the door body;

FIG. 8 is a schematic cross-sectional view taken along line C-C of FIG. 7;

FIG. 9 is a schematic view of the structure of the body in FIG. 1;

fig. 10 is a schematic structural view of the door body in fig. 1.

Reference numerals:

a door body opening and closing device-100, an assembly part-110, a linear slideway-111, an arc slideway-112, a notch-113, a first side part-114, a second side part-115, a third side part-116, a fourth side part-117, an operation hole-118, a first rotating shaft-120, a second rotating shaft-130, a connecting piece-140,

the door body-200, the door plate-210 and the funnel-220;

a body-300, a containing cavity-310, a first side wall-311, a second side wall-312 and a fixing groove-313.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that all the directional indications in the embodiments of the present application are only used to explain the relative position relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.

The following disclosure provides many different embodiments, or examples, for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Further, the present application may repeat reference numerals and/or reference letters in the various examples for simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or arrangements discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

The application is described below with reference to specific embodiments in conjunction with the following drawings:

some electric appliances, such as coffee makers, ovens, food processors, refrigerators and the like, are provided with an openable door body, and the door body needs to be operated to open the door body.

Among the prior art, the door body open and shut the mode and generally realize the door that opens and shuts through pull (drawer) mode, and the door body of this mode of opening and shutting can bulge the electrical apparatus completely when opening, occupies too much storage space, is unfavorable for user's use and has improved the space.

In order to solve the technical problem, an embodiment of the application provides a door body opening and closing device and an electric appliance, and aims to improve the problem that a door body of the electric appliance occupies too much storage space after being opened at least to a certain extent, so that the use of a user is facilitated.

Fig. 1 isbase:Sub>A schematic structural view of an electric appliance, and fig. 2 isbase:Sub>A schematic sectional view taken along linebase:Sub>A-base:Sub>A of fig. 1. Referring to fig. 1 and 2, a door body opening and closing device 100 according to an embodiment of the present disclosure is suitable for opening and closing a door body 200 on an electrical appliance, where the electrical appliance may be an electrical appliance having an openable door body 200, such as a coffee machine, an oven, a food processor, or a refrigerator, the door body opening and closing device 100 includes a mounting member 110, a first rotating shaft 120, and a second rotating shaft 130, the mounting member 110 is provided with a slide way, the slide way includes a linear slide way 111 and an arc-shaped slide way 112 communicated with a side of the linear slide way 111, the first rotating shaft 120 and the second rotating shaft 130 are both connected to the door body 200, the first rotating shaft 120 is capable of reciprocating in the linear slide way 111, the second rotating shaft 130 is capable of reciprocating in the linear slide way 111 and the arc-shaped slide way 112, and when the first rotating shaft 120 slides to an end of the linear slide way 111, the second rotating shaft 130 is capable of sliding from the linear slide way 111 to the arc-shaped slide way 112 around the first rotating shaft 120.

According to the door body opening and closing device 100 provided by the embodiment of the present application, since the slide of the assembly 110 of the opening and closing device includes the linear slide 111 and the arc slide 112 communicated with the side of the linear slide 111, the first rotating shaft 120 connected to the door body 200 can reciprocate in the linear slide 111, and the second rotating shaft 130 connected to the door body 200 can reciprocate in the linear slide 111 and the arc slide 112, when the first rotating shaft 120 slides to the end of the linear slide 111, the second rotating shaft 130 can slide from the linear slide 111 to the arc slide 112 around the first rotating shaft 120, that is, after the first rotating shaft 120 drives the door body 200 to do linear movement, the door body 200 and the second rotating shaft 130 rotate around the first rotating shaft 120, and at the same time, the second rotating shaft 130 slides from the linear slide 111 to the arc slide 112, that is an initial state of the door body rotation described in fig. 6 and fig. 7 is formed, when the second rotating shaft 130 rotates to the end of the arc slide 112 at the arc slide 112, the door body 200 stops rotating, and the door body opening state described in fig. 8 and fig. 9 is formed; when the door body 200 needs to be closed, the door body 200 is operated in a reverse direction, that is, the door body 200 is operated to rotate around the first rotating shaft 120, and when the second rotating shaft 130 rotates from the arc-shaped slide rail 112 to the linear slide rail 111, because the linear slide rail 111 limits the rotation of the second rotating shaft 130, the door body 200 cannot continue to rotate, and then the door body 200 is pushed, and the door body 200 moves in the second rotating shaft 130 and the first rotating shaft 120 in the linear slide rail 111 to reset, so that the door body 200 can be closed conveniently and quickly.

The door body device that opens and shuts that this application embodiment provided adopts linear motion and pivoted combination reciprocating motion to realize opening and shutting of a body, and the reducible accommodation space that occupies door body linear motion direction, and simple structure is compact, has fine practicality.

Fig. 3 is a schematic structural diagram of the assembly shown in fig. 1, and in combination with fig. 2 and 3, the linear slideway 111 according to the embodiment of the present invention may have a kidney-shaped overall shape, the width dimension of the kidney-shaped shape may be matched with the diameters of the first rotating shaft 120 and the second rotating shaft 130, and since the two ends of the kidney-shaped shape are semicircular, the first rotating shaft 120 and the second rotating shaft 130 may be conveniently accommodated, and the first rotating shaft 120 may be conveniently rotated.

With reference to fig. 2 and fig. 3, a notch 113 is disposed on a side edge of the linear slideway 111 according to the embodiment of the present disclosure, the arc-shaped slideway 112 is communicated with the side edge of the linear slideway 111 through the notch 113, and the second rotating shaft 130 can enter the arc-shaped slideway 112 from the notch 113 and rotate in the arc-shaped slideway 112 around the first rotating shaft 120.

The notch 113 of the embodiment of the present application is preferably disposed at the end of the side of the linear slideway 111, and when the first rotating shaft 120 slides to the end of the linear slideway 111, the second rotating shaft 130 can enter the arc slideway 112 from the notch 113 and rotate around the first rotating shaft 120 in the arc slideway 112. Of course, in other embodiments, the notch 113 may also be disposed at the middle of the side of the linear slideway 111, and the like, and is not limited herein.

Further, the central angle of the arc chute 112 of the embodiment of the present application may be between 90 ° and 135 ° to limit the rotation angle of the door 200, so that the door 200 has openings of 90 ° and 135 °. The central angle of the arc-shaped sliding way 112 can be set according to actual requirements, and is not described herein.

Referring to fig. 3, the assembly 110 of the embodiment of the present disclosure may be a block shape as a whole, the assembly 110 is provided with a first side portion 114 and a first side portion 115 opposite to each other, the first side portion 114 and the first side portion 115 are provided with slideways, and two ends of the first rotating shaft 120 and the second rotating shaft 130 are slidably connected in the slideways on the two sides, respectively. The sliding of the first rotating shaft 120 and the second rotating shaft 130 can be more smooth by the sliding ways of the first side portion 114 and the first side portion 115.

It should be noted that the linear sliding ways 111 on the first side portion 114 or/and the first side portion 115 of the embodiment of the present application are hole-shaped, that is, at least one of the linear sliding ways 111 on the two side portions is hole-shaped, so that the first rotating shaft 120 and the second rotating shaft 130 can be assembled between the two sliding ways through the linear sliding ways 111 with hole-shaped.

With reference to fig. 2 and 3, the first side portion 114 of the assembly member 110 of the embodiment of the present application is located above the first side portion 115, the linear slideway 111 on the first side portion 114 is hole-shaped, and the linear slideway 111 on the first side portion 115 is groove-shaped, so that when the rotating shaft is assembled to the assembly member 110, the first rotating shaft 120 and the second rotating shaft 130 can be assembled from top to bottom through the hole-shaped linear slideway 111 on the first side portion 114, and the groove-shaped linear slideway 111 on the first side portion 115 can be used for supporting the first rotating shaft 120 and the second rotating shaft 130, so that the sliding of the first rotating shaft 120 and the second rotating shaft 130 in the slideways is reliable.

In the embodiment of the present application, the distance between the opposite sides of the first side portion 114 and the first side portion 115 may be consistent with the lengths of the first rotating shaft 120 and the second rotating shaft 130, and when the first rotating shaft 120 and the second rotating shaft 130 are assembled to the assembly member 110, the slide ways on the first side portion 114 and the first side portion 115 may limit the positions of the first rotating shaft 120 and the second rotating shaft 130, so that the first rotating shaft 120 and the second rotating shaft 130 can only slide in the corresponding slide ways.

The first side portion 114 and the first side portion 115 may be both sides in the horizontal direction, so that the door body 200 can be turned upside down.

Further, referring to fig. 2 and 3, the arc-shaped sliding ways 112 of the present embodiment may be groove-shaped, and the reliability of the sliding of the first rotating shaft 120 and the second rotating shaft 130 in the sliding ways may also be improved. Of course, the upper arc chute 112 may be hole-shaped, and the lower arc chute 112 is preferably slot-shaped.

Referring to fig. 2, the door body opening and closing device 100 according to the embodiment of the present disclosure further includes a connecting member 140. Fig. 4 is a schematic structural view of the connector of fig. 1. Referring to fig. 2 and 4, the connecting member 140 may be a block, the first rotating shaft 120 and the second rotating shaft 130 are connected to the door body 200 through the connecting member 140, and the connecting member 140 may enter between the first side portion 114 and the first side portion 115 from the linear slideway 111 on the first side portion 114.

The connecting piece 140 of the embodiment of the application can be integrally formed with the first rotating shaft 120 and the second rotating shaft 130, and the thickness of the connecting piece 140 can be consistent with the width of the slide way, so that when the assembly is carried out, the integrally formed first rotating shaft 120, the integrally formed second rotating shaft 130 and the connecting piece 140 can fall into the assembly piece 110 from the hole-shaped linear slide way 111 on the first side portion 114, and the assembly is convenient and fast.

With reference to fig. 2 and 3, the assembly 110 of the embodiment of the present application is further provided with a third side 116 and a fourth side 117, the third side 116 and the fourth side 117 are oppositely disposed between the first side 114 and the first side 115, the third side 116 is provided with an operation hole 118, the fourth side 117 is provided with an opening for passing the connector 140, the door body 200 is disposed inside the fourth side 117, and the operation hole 118 can be used to operate a bolt for connecting the door body 200 and the connector 140. When the assembly is implemented, the assembly part 110 is placed at a proper position of the side part of the door body 200, the connecting piece 140 is placed into the assembly part 110 from the linear slide rail 111 on the first side part 114, the connecting piece 140 is supported through the linear slide rail 111 on the first side part 115, then bolts used for connecting the door body 200 and the connecting piece 140 are placed into the operation holes 118, and finally the connecting piece 140 is fixedly connected with the door body 200 through the bolts, so that the assembly of the door body opening and closing device 100 and the door body 200 can be realized, and the assembly is convenient and rapid.

With reference to fig. 1 and fig. 2, the electric appliance according to the embodiment of the present application includes a body 300 and a door 200, wherein the body 300 is provided with a receiving chamber 310, the receiving chamber 310 is provided with a door, and the door 200 is openably and closably connected to the door of the receiving chamber 330 through the door opening and closing device 100. When the door 200 of the electric appliance having the door opening and closing device 100 is opened, the storage space occupying the linear motion direction of the door 200 can be reduced, so that the operation of a user is facilitated, and the electric appliance has good practicability.

Fig. 9 is a structural schematic view of the body in fig. 1, and fig. 10 is a structural schematic view of the door body in fig. 1. With reference to fig. 2, 9 and 10, the accommodating cavity 310 of the body 300 of the embodiment of the present application is provided with a first sidewall 311 and a second sidewall 312, which are opposite to each other, wherein the assembly member 110 is connected to the first sidewall 311, and the second sidewall 320 is provided with a sliding slot for the sidewalls of the door body 200 to linearly reciprocate.

Referring to fig. 9, the first sidewall 311 of the body 300 according to the embodiment of the present disclosure may be provided with a fixing groove 313, and the fitting 110 may be fixed in the fixing groove 313 by a screw or a snap. Of course, the first sidewall 311 of the body 300 may also be a plane, and the assembly 110 is directly fixed to the inner side of the first sidewall 311 of the body 300 by a screw or the like, which is not limited herein.

Referring to fig. 10, the door body 200 of the embodiment of the present application is a funnel door, and includes a door panel 210 and a funnel 220, where the funnel 220 is disposed on one side of the door panel 210, two sides of the funnel 220 have planar portions, the connecting member 140 of the door body opening and closing device 100 is fixedly connected to the planar portion on one side of the funnel 220, and the planar portion on the other side of the funnel 220 is slidably connected to the sliding groove on the second side wall 320 of the body 300, so as to implement assembly of the door body 200 on the body 300.

The door body 200 of the embodiment of the application can realize linear and rotary combined motion on the body 300 through the door body opening and closing device 100, can reciprocate, can solve the problem of single opening and closing mode of the door body, has the characteristics of compact structure and convenience in disassembly of the door body, and has good applicability.

In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and thus, for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In the description of the present application, it is to 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," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application.

In addition, descriptions in this application as to "first", "second", etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.

In the description of the present application, unless otherwise expressly specified or limited, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims (12)

1. The utility model provides a door body device that opens and shuts, its characterized in that, door body device that opens and shuts is applicable to opening and shutting of the door body, door body device that opens and shuts includes:

the assembly part is provided with a slide way, and the slide way comprises a linear slide way and an arc-shaped slide way communicated with the side edge of the linear slide way;

the first rotating shaft and the second rotating shaft are connected to the door body, the first rotating shaft can reciprocate in the linear slideway, and the second rotating shaft can reciprocate in the linear slideway and the arc slideway;

when the first rotating shaft slides to the end part of the linear slideway, the second rotating shaft can rotate around the first rotating shaft and slide to the arc slideway from the linear slideway.

2. The door body opening and closing device according to claim 1, wherein a notch is formed in the side edge of the linear slideway, and the arc-shaped slideway is communicated with the side edge of the linear slideway through the notch.

3. The door opening and closing device according to claim 1 or 2, wherein the central angle of the arc-shaped slideway is between 90 ° and 135 °.

4. The door body opening and closing device according to claim 1 or 2, wherein the assembly part is provided with a first side part and a second side part which are opposite to each other, the first side part and the second side part are provided with the slide ways, and two ends of the first rotating shaft and the second rotating shaft are respectively connected in the slide ways on two sides in a sliding manner.

5. The door opening and closing device according to claim 4, wherein the linear slideway on the first side part or/and the second side part is hole-shaped; and the number of the first and second groups is,

the arc-shaped slide way is groove-shaped.

6. The door opening and closing device according to claim 4, wherein the first side portion is located above the second side portion, the linear slideway on the first side portion is hole-shaped, and the linear slideway on the second side portion is groove-shaped.

7. The door body opening and closing device according to claim 6, further comprising a connecting member, wherein the first rotating shaft and the second rotating shaft are connected to the door body through the connecting member, and the connecting member can enter between the first side portion and the second side portion from a slide way on the first side portion.

8. The door opening and closing device according to claim 7, wherein the assembly further comprises a third side portion and a fourth side portion oppositely disposed between the first side portion and the second side portion, the third side portion is provided with an operation hole, and the fourth side portion is provided with an opening for the connection member to pass through.

9. An electric appliance, characterized in that the electric appliance comprises a body and a door body, the body is provided with a containing cavity for containing the door body, the containing cavity is provided with a door opening, and the door body is connected to the door opening of the containing cavity in an openable and closable manner through the door body opening and closing device according to any one of claims 1 to 8.

10. The electric appliance according to claim 9, wherein the accommodating cavity comprises a first side wall and a second side wall which are opposite, the assembly member is connected to the first side wall, and the second side wall is provided with a sliding groove for the linear reciprocating movement of the door body.

11. The electrical appliance according to claim 10, wherein the distances from the first rotating shaft and the second rotating shaft to the door body are sequentially increased.

12. The appliance according to claim 9, characterized in that the appliance is a coffee maker, an oven, a food processor or a refrigerator.

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