Door opening device and electrical equipment

Abstract

The utility model discloses a door opening device and electrical equipment, and belongs to the technical field of electrical equipment. The door opening device comprises a driving piece and a first transmission piece in transmission connection with the driving piece. The first rotating piece is in transmission connection with the first transmission piece and the first door opening piece; the second rotating piece is in transmission connection with the first transmission piece and the second door opening piece; wherein the first transmission part is arranged between the first door opening part and the second door opening part, and the first transmission part is in transmission connection with the first rotating part and is separated from the second rotating part; or the first transmission part is in transmission connection with the second rotating part and is separated from the first rotating part. The door opening device can be suitable for electrical equipment with different widths, and the utilization rate of the door opening device can be increased.

Description

Technical Field

[0001] This application belongs to the field of electrical equipment technology, and in particular relates to a door opening device and electrical equipment. Background Technology

[0002] Refrigerators and other electrical appliances are widely used in daily life. In particular, large appliances like refrigerators have a certain door sealing force when the door is connected to the cabinet in order to preserve cold energy and prevent cold energy leakage. When opening the door, the user needs to open it manually. In order to break through the door seal, a certain amount of force is required to open the door, which results in a poor user experience.

[0003] A door opening device can be installed on the electrical equipment. This device, mounted within the enclosure, allows the door to open automatically via its opening mechanism. During opening, the mechanism protrudes from the enclosure, pushing the door open. Currently, to increase the internal capacity of electrical equipment, the width of the enclosure can be increased, leading to the installation of double doors. This means the electrical equipment includes an enclosure and at least two doors. If a single door opening device were used to open both doors, the width of the enclosure would limit its operation, making it impossible to open both doors with a single device. Related technologies typically use two separate door opening devices to drive each door. This approach requires two separate opening devices, increasing the overall cost of the equipment. Utility Model Content

[0004] This application aims to at least partially solve the technical problem that the door opening device is limited by the width of the cabinet and cannot open both doors. To this end, this application provides a door opening device and electrical equipment.

[0005] In a first aspect, an embodiment of this application provides a door opening device, comprising:

[0006] A driving component and a first transmission component that is driveably connected to the driving component;

[0007] A first rotating component and a first opening component, wherein the first rotating component is drivingly connected to the first driving component and the first opening component;

[0008] The second rotating component and the second opening component are connected by a transmission link between the first transmission component and the second opening component.

[0009] The first transmission component is disposed between the first door opening component and the second door opening component, and the first transmission component is connected to the first rotating component and is separate from the second rotating component.

[0010] Alternatively, the first transmission member is connected to the second rotating member in a transmission manner, but is also separate from the first rotating member.

[0011] Since the first and second doors are arranged side-by-side along the width of the enclosure, the distance between the first and second door opening components is half the width of the enclosure. The first door opening component is fixed in position relative to the first door in the width direction of the enclosure. The second rotating component is drivenly connected to the second door opening component, and the second door opening component is fixed in position relative to the second door in the width direction of the enclosure. The distance between the first and second rotating components is not limited; in other words, it is not limited by the width of the enclosure. This allows the door opening device to be used with electrical equipment of different widths, improving its utilization rate.

[0012] In an optional embodiment of this application, the length of the first transmission member is less than or equal to the distance between the rotation center of the first rotating member and the rotation center of the second rotating member.

[0013] In an optional embodiment of this application, the transmission length of the first transmission member is greater than the transmission lengths of the first rotating member and the second rotating member.

[0014] In an optional embodiment of this application, the first transmission member includes a first transmission rack, and the driving member, the first rotating member, and the second rotating member mesh with the first transmission rack.

[0015] In an optional embodiment of this application, the first transmission member includes a first transmission rack and a second transmission rack arranged opposite to each other, the first rotating member and the second rotating member are connected to the first transmission rack, and the driving member is connected to the second transmission rack.

[0016] In an optional embodiment of this application, the first transmission member has a first detection part and a second detection part that are spaced apart, the first detection part being disposed near the first door opening member, and the second detection part being disposed near the second door opening member;

[0017] The first detection element and the second detection element are both disposed between the first door opening element and the second door opening element, with the first detection element being disposed closer to the first door opening element and the second detection element being disposed closer to the second door opening element;

[0018] The driving member can drive the first transmission member to move closer to the first door opening member, so that the first rotating member drives the first door opening member to move. When the first detection member detects the arrival signal of the second detection part, the driving member drives the first transmission member to move closer to the second door opening member, so that the second rotating member drives the second door opening member to move.

[0019] When the second detection element detects the position signal of the first detection element, the driving element drives the first transmission element to move away from the second door opening element. When the first detection element detects the position signal of the first detection element and / or the second detection element detects the position signal of the second detection element, the driving element stops operating.

[0020] In an optional embodiment of this application, both the first detection unit and the second detection unit are disposed between the first door opening member and the second door opening member.

[0021] In an optional embodiment of this application, the first transmission member is capable of reciprocating between the first door opening member and the second door opening member under the drive of the driving member.

[0022] In an optional embodiment of this application, the drive member is disposed between the first door opening member and the second door opening member.

[0023] Secondly, embodiments of this application provide an electrical device, including a housing, a first door, a second door, and the door opening device described in the first aspect. The first door and the second door are both rotatably connected to the housing. The first door opening component is provided corresponding to the first door, and the second door opening component is provided corresponding to the second door.

[0024] The beneficial effects of the electrical equipment provided in the second aspect are the same as those of the door opening device provided in the first aspect, and will not be repeated here. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A schematic diagram of the structure of the electrical equipment provided in the embodiments of this application is shown.

[0027] Figure 2 The diagram shows the structure of the door opening device for removing the cover plate.

[0028] Figure 3 A schematic diagram of the structure of a door opening device provided in some other embodiments of this application is shown.

[0029] Figure 4 A schematic diagram of the door opening device installed in the box is shown.

[0030] Figure 5 A schematic diagram showing the structure of the first door being opened is shown.

[0031] Figure 6 A schematic diagram showing the structure of the second door being opened is shown.

[0032] Figure 7 A schematic diagram of the first transmission component resetting structure is shown.

[0033] Figure 8 It shows Figure 2 A structural schematic diagram of the provided door opening device from another perspective.

[0034] Figure 9 It shows Figure 2 Exploded view of the center-opening door device.

[0035] Figure 10 A schematic diagram of the door opening component provided in an embodiment of this application is shown.

[0036] Figure 11 It shows Figure 2 The provided door opening device has its base removed from the bottom view.

[0037] Figure 12 It shows Figure 11 A magnified view of a portion of point A in the middle.

[0038] Figure 13 A schematic diagram of the structure of the electrical equipment provided in the embodiments of this application is shown.

[0039] Reference numerals: 100-Door opening device, 110-Driver, 112-Motor, 114-Transmission wheel, 120-Transmission assembly;

[0040] 130-First transmission component, 131-First tooth, 131a-First transmission tooth, 131c-First connecting tooth, 132-First transmission rack, 134-Second transmission rack, 135-First detection part, 136-Second detection part;

[0041] 140 - Second transmission component, 142 - First transmission gear, 142a - Second transmission tooth, 142b - Clearance groove, 142c - Second connecting tooth, 142d - Stop, 144 - Second transmission gear, 140a - First rotating component, 140b - Second rotating component;

[0042] 150-Door opening component, 152-Second tooth, 154-Top door component, 156-Connecting part, 157-First limiting part, 158-Second limiting part, 150a-First door opening component, 150b-Second door opening component;

[0043] 160-Housing, 162-Mounting cavity, 164-Base, 164a-First stop, 164b-Second stop, 166-Cover plate;

[0044] 172 - Reset component, 174 - First inspection component, 176 - Second inspection component;

[0045] 10-Electrical equipment; 210-Box body; 220-Door body; 221-First door body; 223-Second door body; 230-Decorative cover;

[0046] Z - Height direction, X - Width direction, Y - Thickness direction. Detailed Implementation

[0047] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0048] It should be noted that all directional indications in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0049] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0050] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0051] Refrigerators and other electrical appliances are widely used in daily life. In particular, large appliances like refrigerators have a certain door sealing force when the door is connected to the cabinet in order to preserve cold energy and prevent cold energy leakage. When opening the door, the user needs to open it manually. In order to break through the door seal, a certain amount of force is required to open the door, which results in a poor user experience.

[0052] A door opening device can be installed on the appliance, mounted on the cabinet. The door can be automatically opened by the opening mechanism of the device, which protrudes from the cabinet and pushes the door open. Currently, to increase the internal capacity of the appliance, the width of the cabinet can be increased, resulting in double doors. That is, the appliance includes a cabinet and at least two doors. If the same door opening device is used to open both doors, the width of the cabinet limits the ability to open both doors with a single device. Related technologies use two separate door opening devices to drive the two doors, which requires two devices and increases the overall cost. The door opening device provided in this application improves the above problems. The door opening device and appliance provided in this application can drive the opening of both doors with a single device, making it suitable for refrigerators of different widths and improving the utilization rate of the door opening device.

[0053] This application is described below with reference to the accompanying drawings and specific embodiments:

[0054] Figure 1 The diagram shows a structural schematic of an electrical device 10 provided in an embodiment of this application. This embodiment of the application provides a door opening device 100, which can be applied to electrical devices 10 of different widths and sizes, thereby improving the utilization rate of the door opening device 100.

[0055] The door opening device 100 can be positioned close to or away from the rotational connection point between the refrigerator body 210 and the door body 220. The location of the door opening device 100 is not limited, as long as it can open the door body 220. The refrigerator body 210 is roughly rectangular. For ease of description, the height direction Z, width direction X, and thickness direction Y are defined. The height direction Z is the vertical direction of the refrigerator in its operating state, the thickness direction Y is the direction from which the refrigerator body 210 faces the door body 220, and the width direction X is perpendicular to both the height direction Z and the thickness direction Y.

[0056] Figure 2The diagram shows a schematic of the door opening device 100 without the cover plate 166. In this embodiment, the door opening device 100 includes: a driving member 110, a first transmission member 130, a first rotating member 140a, a first door opening member 150a, a second rotating member 140b, a second door opening member 150b, a first detection member 174, and a second detection member 176. The driving member 110 is connected to the first transmission member 130; the first rotating member 140a is connected to the first transmission member 130 and the first door opening member 150a; and the second rotating member 140b is connected to the first transmission member 130 and the second door opening member 150b.

[0057] The first transmission component 130 is connected to the first rotating component 140a. The first transmission component 130 can be always connected to the first rotating component 140a, or the first door 221 can be connected when it is necessary to open the door. This allows the driving component 110 to drive the first door opening component 150a to push open the first door 221 through the first transmission component 130 and the first rotating component 140a.

[0058] Similarly, the second transmission member 140 is connected to the second rotating member 140b. This can be either the first transmission member 130 is always rotatably connected to the first rotating member 140a, or the first transmission member 130 is connected to the first rotating member 140a only when the second door 223 needs to be opened. This allows the driving member 110 to drive the second door opening member 150b to push open the second door 223 through the first transmission member 130 and the second rotating member 140b.

[0059] The first transmission member 130 is disposed between the first door opening member 150a and the second door opening member 150b. The first transmission member 130 is connected to the first rotating member 140a and is separated from the second rotating member 140b; or, the first transmission member 130 is connected to the second rotating member 140b and is separated from the first rotating member 140a.

[0060] The first transmission member 130 is disposed between the first door opening member 150a and the second door opening member 150b, so that the first transmission member 130 can drive the first door opening member 150a to move through the first rotating member 140a, and can also drive the second door opening member 150b to move through the second rotating member 140b. The first door opening member 150a and the second door opening member 150b can be driven by the same driving member 110, so that the first door opening member 150a can open the first door body 221 and the second door opening member 150b can open the second door body 223. This reduces the number of driving members 110 and reduces the cost of the door opening device 100.

[0061] Since the first transmission member 130 is in transmission engagement with the first rotating member 140a, it is disengaged from the second rotating member 140b. Conversely, if the first transmission member 130 is in transmission engagement with the second rotating member 140b, it is disengaged from the first rotating member 140a. That is, when the driving member 110 is in transmission connection with the first transmission member 130 and the first rotating member 140a, driving the first door opening member 150a to open the first door body 221, the first transmission member 130 is disengaged from the second rotating member 140b, causing the second door opening member 150b to not operate. Similarly, if the driving member 110 is connected to the first transmission member 130 and the second rotating member 140b, and drives the second door opening member 150b to open the second door body 223, the first transmission member 130 is separated from the first rotating member 140a, so that the first transmission member 130 is only connected to one of the first rotating member 140a and the second rotating member 140b. Since the first transmission member 130 is only connected to one of the first rotating member 140a and the second rotating member 140b, this arrangement is not limited by the distance between the first rotating member 140a and the second rotating member 140b, compared with the door opening device 100 in which the first transmission member 130 is simultaneously connected to the first rotating member 140a and the second rotating member 140b. It can ensure that the first transmission member 130 can be connected to one of the first rotating member 140a and the second rotating member 140b.

[0062] It is easy to understand that during the process of the first door opening component 150a opening the first door component, when the first door opening component 150a extends to the same length, the closer the contact point between the first door opening component 150a and the first door body 221 is to the rotational connection point between the first door opening component 150a and the box body 210, the greater the force required for the first door opening component 150a to break through the first door body 221, and the larger the opening angle. The farther the contact point between the first door opening component 150a and the first door body 221 is from the rotational connection point between the first door opening component 150a and the box body 210, the smaller the force required for the first door opening component 150a to break through the first door body 221, but the smaller the opening angle. In order to achieve a smaller force and a larger opening angle during the opening process, the position of the first door opening component 150a is roughly set at the middle position of the first door body 221 along the width direction X of the box body 210. The process of the second door opening component 150b opening the second door body 223 is the same as above, and will not be described again.

[0063] Since the first door body 221 and the second door body 223 are arranged side by side along the width direction X of the housing 210, the distance between the first door opening member 150a and the second door opening member 150b is half the width of the housing 210. The position of the first door opening member 150a relative to the first door body 221 in the width direction X of the housing 210 is fixed. The second rotating member 140b is connected to the second door opening member 150b in a transmission manner. The position of the second door opening member 150b relative to the second door body 223 in the width direction X of the housing 210 is fixed. The distance between the first rotating member 140a and the second rotating member 140b is not limited. In other words, the distance between the first door opening member 150a and the second door opening member 150b is not limited. That is, it is not limited by the width of the housing 210, so the door opening device 100 can be used for electrical equipment 10 with different widths and sizes, which can improve the utilization rate of the door opening device 100.

[0064] If different widths of electrical appliances are to be applied, the distance between the first door opening member 150a and the second door opening member 150b can be changed, and the length of the first transmission member 130 can be adjusted accordingly. In some embodiments, the electrical appliances 10 applicable to different widths can be achieved without changing the length of the first transmission member 130.

[0065] The driving component 110 may include a motor 112 and a transmission wheel 114. The motor 112 is connected to the transmission wheel 114, and the transmission wheel 114 is connected to the first transmission component 130. The transmission wheel 114 may be multiple gears.

[0066] In addition, since the first transmission component 130 is only connected to one of the first rotating component 140a and the second rotating component 140b, the first door body 221 and the second door body 223 can be controlled to open independently, which reduces the interference between the first door body 221 and the second door body 223 during the opening process and improves the stability of the opening.

[0067] In some embodiments, the length of the first transmission member 130 is less than or equal to the distance between the rotation center of the first rotating member 140a and the rotation center of the second rotating member 140b.

[0068] The first door opening component 150a and the second door opening component 150b are spaced apart along the width direction X of the housing 210. The first transmission component 130 is arranged along the width direction X of the housing 210. The distance between the rotation center of the first rotating component 140a and the rotation center of the second rotating component 140b refers to the distance between the rotation center of the first transmission component 130 and the rotation center of the second rotating component 140b in the width direction X of the housing 210.

[0069] It is easy to understand that the first door 221 and the second door 223 are rotatably connected to both sides of the housing 210 along the width direction X. If the opening of the first door 221 is taken as the reference for forward rotation, then the opening of the second door 223 is the reverse rotation. The first transmission component 130 can only move in a certain direction (taking the direction of opening the first door 221 as an example). If it drives the two rotating components to move at the same time, it will cause the first door 221 to rotate outward from the housing 210 and the second door 223 to rotate inward from the housing 210, which may easily lead to the deformation of the second door 223.

[0070] The length of the first transmission member 130 is less than or equal to the distance between the rotation center of the first rotating member 140a and the rotation center of the second rotating member 140b, so that the first transmission member 130 can only be connected to one of the first rotating member 140a and the second rotating member 140b. This reduces the possibility of the first transmission member 130 being connected to both the first rotating member 140a and the second rotating member 140b at the same time, and also reduces the risk of damage to the door body 220.

[0071] The first transmission member 130 has a first transmission rack 132 and a second transmission rack 134 arranged opposite to each other. The first rotating member 140a and the second rotating member 140b are both connected to the first transmission rack 132. The second transmission rack 134 is connected to the driving member 110. The second transmission rack 134, the first detection part 135 and the second detection part 136 are arranged on the same side of the first transmission member 130.

[0072] The first transmission gear 142 and the driving member 110 respectively cooperate with different sides of the first transmission member 130, so that when the driving member 110 drives the first transmission member 130 to move, the two sides of the first transmission member 130 are respectively subjected to the forces of the driving member 110 and the first rotating member 140a and the second rotating member 140b. The forces on both sides of the first transmission member 130 can be balanced as much as possible, thereby improving the stability of the movement of the first transmission member 130.

[0073] Figure 3 The following are schematic diagrams illustrating the structure of the door opening device 100 provided in other embodiments of this application, such as... Figure 3 As shown, in some embodiments, the first transmission member 130 has only a first transmission rack 132, and the driving member 110, the first rotating member 140a and the second rotating member 140b are all connected to the first transmission rack 132 in a transmission connection.

[0074] Since the first transmission rack 132 is connected to the drive member 110, the first rotating member 140a, and the second rotating member 140b, and is positioned on the side where the first transmission member 130 rotates the first transmission rack 132, the risk of interference between the first transmission member 130 and the drive member 110, the first rotating member 140a, and the second rotating member 140b during movement can be reduced, thereby improving the stability of the door opening device 100.

[0075] In some embodiments, the drive member 110 is disposed between the first door opening member 150a and the second door opening member 150b. Since the first door opening member 150a drives the first door body 221 and the second door opening member 150b drives the second door body 223, there is a certain width between the first door opening member 150a and the second door opening member 150b. By disposing the drive member 110 between the first door opening member 150a and the second door opening member 150b, the gap between the first door opening member 150a and the second door opening member 150b can be used to arrange the drive member 110, which can reduce the width of the door opening device 100, making the entire door opening device 100 more compact and reducing the space occupied.

[0076] In some embodiments, the first transmission member 130 can reciprocate linearly between the first door opening member 150a and the second door opening member 150b under the drive of the drive member 110. The first transmission member 130 is elongated and can reciprocate between the first door opening member 150a and the second door opening member 150b under the drive of the drive member 110. The same first transmission member 130 can drive the first rotating member 140a and the second rotating member 140b respectively, and the linear reciprocating motion path is small, which can save power and cost.

[0077] To ensure that the first transmission component 130 can move linearly, a guide rail can be provided on the base 164. The guide rail is located between the first door opening component 150a and the second door opening component 150b. A sliding groove is provided on the first transmission component 130. The first transmission component 130 can move linearly back and forth between the first door opening component 150a and the second door opening component 150b through the cooperation of the guide rail and the sliding groove.

[0078] Figure 4 A schematic diagram of the door opening device 100 installed on the housing 210 is shown. In some embodiments, the door opening device 100 further includes a first detection element 174 and a second detection element 176. The first transmission element 130 has a first detection part 135 and a second detection part 136 arranged at intervals. The first detection part 135 is arranged close to the first door opening element 150a, and the second detection part 136 is arranged close to the second door opening element 150b.

[0079] Since the same driving component 110 drives the first door opening component 150a and the second door opening component 150b to move through the first transmission component 130, the first transmission component 130 needs to be connected to the first rotating component 140a and the second rotating component 140b respectively. That is, the first transmission component 130 moves between the first door opening component 150a and the second door opening component 150b. By setting the first detection component 174 and the second detection component 176 between the first door opening component 150a and the second door opening component 150b, the movement path and current position of the first transmission component 130 can be detected.

[0080] Regarding the positions of the first detection element 174 and the second detection element 176, they can be set along the width direction X of the housing 210. The distances between the first detection element 174 and the second detection element 176 and the opening of the housing 210 can be the same or different, and no specific limitation is made in this application.

[0081] Specifically, the driving member 110 can drive the first transmission member 130 to move closer to the first door opening member 150a, causing the first rotating member 140a to drive the first door opening member 150a to move. When the first detection member 174 detects the arrival signal of the second detection unit 136, the driving member 110 drives the first transmission member 130 to move closer to the second door opening member 150b, causing the second rotating member 140b to drive the second door opening member 150b to move.

[0082] With both the first door 221 and the second door 223 closed within the housing 210, of the two detection elements 174 and 176, the first detection element 135 is positioned closer to the first detection element 174 than the second detection element 176. Similarly, the second detection element 136 is positioned closer to the second detection element 176 than the first detection element 174.

[0083] Figure 5 A schematic diagram showing the structure of the first door 221 being opened is shown, as follows. Figure 5 As shown, the driving member 110 can drive the first transmission member 130 to move towards the first door opening member 150a, or it can drive the first transmission member 130 to move towards the second door opening member 150b. For ease of description, the rotation of the first transmission member 130 driven by the driving member 110 towards the first door opening member 150a is defined as forward rotation, and the rotation of the first transmission member 130 driven by the driving member 110 towards the second door opening member 150b is defined as reverse rotation.

[0084] The driving member 110 first drives the first transmission member 130 to move closer to the first door opening member 150a, and the second detection member 136 moves closer to the first detection member 174. The driving member 110 drives the first door opening member 150a to move through the first transmission member 130 and the first rotating member 140a, so that the first door opening member 150a pushes open the first door 221. When the first detection member 174 detects the arrival signal of the second detection member 136, it means that the first door opening member 150a extends a first predetermined distance, so that the first door 221 reaches a first predetermined angle. In this case, it means that the first door 221 has been opened.

[0085] In other words, when the first detection element 174 detects the arrival signal of the second detection element 136, it indicates that the first door 221 has been opened, and the arrival signal of the second detection element 136 detected by the first detection element 174 can also be regarded as the opening signal of the first door 221.

[0086] In other words, when the first detection element 174 detects the arrival signal of the second detection element 136, it indicates that the first door 221 is open, and controls the drive element 110 to drive the first transmission element 130 to move closer to the second rotating element 140b, so as to push open the second door 223. That is, the arrival signal of the second detection element 136 detected by the first detection element 174 is both the opening signal of the first door 221 and the control signal for the reverse rotation of the drive element 110.

[0087] After the first door 221 is opened, the drive member 110 reverses and drives the first transmission member 130 to move toward the second door opening member 150b. The first transmission member 130 can be connected to the second rotating member 140b, so that the first transmission member 130 drives the second door opening member 150b to move through the second rotating member 140b to push open the second door 223.

[0088] Figure 6 A schematic diagram showing the structure of the second door 223 being opened is shown, as follows. Figure 6 As shown, when the second detection element 176 detects the arrival signal of the first detection element 135, the drive element 110 drives the first transmission element 130 to move away from the second door opening element 150b. When the first detection element 174 detects the arrival signal of the first detection element 135 and / or the second detection element 176 detects the arrival signal of the second detection element 136, the drive element 110 stops operating.

[0089] The drive member 110 drives the first transmission member 130 to move closer to the second door opening member 150b. When the second detection member 176 detects the arrival signal of the first detection part 135, it indicates that the second door opening member 150b extends a second set distance, so that the second door body 223 has reached the second set angle. In this case, it indicates that the second door body 223 has been opened.

[0090] In other words, when the second detection element 176 detects the arrival signal of the first detection part 135, it indicates that the second door 223 has been opened. The arrival signal of the first detection part 135 detected by the second detection element 176 can also be regarded as the opening signal of the second door 223. At this time, the drive element 110 can be controlled to rotate forward, so that the first transmission element 130 moves towards the first door opening element 150a. That is, the arrival signal of the first detection part 135 detected by the second detection element 176 is also the control signal for the forward transmission of the drive element 110.

[0091] Figure 7 A schematic diagram of the resetting structure of the first transmission component 130 is shown, as follows: Figure 7 As shown, after the second detection element 176 detects the arrival signal of the first detection element 135, it indicates that the second door 223 is also opened. That is, the driving element 110 drives the first rotating element 140a to move away from the second door opening element 150b, so that the first transmission element 130 can be reset to prepare for the next door opening.

[0092] If the first detection element 174 detects the arrival signal of the first detection unit 135 and / or the second detection element 176 detects the arrival signal of the second detection unit 136, it indicates that the first transmission element 130 has been reset and returned to its initial position, and the drive element 110 stops operating to prepare for the next door opening.

[0093] If at least one of the following two conditions is met, it can be concluded that the first transmission member 130 has been reset.

[0094] In this embodiment of the application, by cooperating with the first detection element 174 and the second detection element 176, it is possible to detect whether the first door 221 is opened, whether the second door 223 is opened, and whether the first transmission element 130 has returned to the initial position. The detection elements can detect three position states, eliminating the need for three detection elements. This reduces the number of electronic components and the cost of the door opening device 100.

[0095] In some embodiments, the first transmission member 130 can reciprocate between the first door opening member 150a and the second door opening member 150b under the drive of the drive member 110. The first transmission member 130 is elongated and can drive the first rotating member 140a and the second rotating member 140b respectively under the drive of the drive member 110. The linear reciprocating motion path is small, which can save power and cost.

[0096] In some embodiments, the first detection unit 135 and the second detection unit 136 are both disposed between the first door opening member 150a and the second door opening member 150b.

[0097] Since the first transmission member 130 needs to drive the first rotating member 140a and the second rotating member 140b to move respectively, the movement path of the first transmission member 130 is at least between the first door opening member 150a and the second door opening member 150b. By setting the first detection part 135 and the second detection part 136 between the first door opening member 150a and the second door opening member 150b, the situation where the first detection member 174 and the second detection member 176 cannot detect the first detection part 135 and the second detection part 136 can be reduced, thereby improving the control accuracy of the door opening device 100 and improving the door opening effect.

[0098] By positioning the first detection unit 135 and the second detection unit 136 between the first door opening member 150a and the second door opening member 150b, the space occupied on the outside of the first door opening member 150a and the second door opening member 150b can be reduced, thereby reducing the overall volume of the door opening device 100.

[0099] It should be noted that in the embodiments of this application, the first rotating member 140a and the second rotating member 140b have the same structure. For the convenience of describing the structure of the first rotating member 140a and the second rotating member 140b, the first rotating member 140a and the second rotating member 140b are defined as the second transmission member 140. The structure of the first rotating member 140a and the second rotating member 140b is the same as the structure of the second rotating member 140b mentioned below and the way it cooperates with the first transmission member 130. This can be taken as the standard. Similarly, for the convenience of description, the first door opening member 150a and the second door opening member 150b are defined as door opening member 150. The structure of the first door opening member 150a and the second door opening member 150b is the same as the door opening member 150 mentioned below. This can be taken as the standard.

[0100] Figure 8 It shows Figure 2 A structural schematic diagram of the provided door opening device 100 from another perspective. Please refer to... Figure 8The first transmission member 130 is connected to the drive member 110, and the first transmission member 130 has a first tooth 131; the second transmission member 140 includes a first transmission gear 142 and a second transmission gear 144, and the first transmission gear 142 meshes with the first tooth 131; the door opening member 150 has a second tooth 152 that meshes with the second transmission gear 144; wherein, at least one of the first transmission gear 142 and the second transmission gear 144 is an incomplete gear.

[0101] The first transmission component 130 and the second transmission component 140 constitute the transmission assembly 120 of the entire door opening device 100. The transmission assembly 120 includes the first transmission component 130 and the second transmission component 140. In addition, it may include other structures. This application embodiment does not make specific limitations. The first tooth 131 includes the first transmission rack 132 and the second transmission rack 134 mentioned above.

[0102] The engagement of the first tooth 131 of the first transmission member 130 with the first transmission gear 142 means that the first tooth 131 and the first transmission gear 142 achieve transmission through engagement. When not in operation, the first tooth 131 and the first transmission gear 142 may or may not be in an engaged state, as long as the first tooth 131 and the first transmission gear 142 can engage and transmit power.

[0103] Similarly, the meshing of the second transmission gear 144 and the second tooth 152 means that the second tooth 152 and the second transmission gear 144 achieve transmission through meshing. When not transmitting, the second tooth 152 and the second transmission gear 144 can be in a meshing state or not in a meshing state, as long as the meshing transmission of the second tooth 152 and the second transmission gear 144 can be guaranteed.

[0104] The coaxial arrangement of the first transmission gear 142 and the second transmission gear 144 means that the first transmission gear 142 and the second transmission gear 144 can be connected to the same transmission shaft. After the first transmission member 130 drives the first transmission gear 142, the first transmission gear 142 can drive to the second transmission gear 144, and then drive to the door opening member 150 through the second transmission gear 144.

[0105] During the process of the drive member 110 transmitting power to the door opening member 150, the drive member 110 drives the first transmission member 130 to move. The first transmission member 130 meshes with the first transmission gear 142, transmitting power to the first transmission gear 142. The first transmission gear 142 and the second transmission gear 144 are coaxially arranged, transmitting power to the second transmission gear 144. The second transmission gear 144 meshes with the second tooth 152 of the door opening member 150, thereby transmitting power to the door opening member 150, enabling the door opening member 150 to open the door body 220.

[0106] Among them, at least one of the first transmission gear 142 and the second transmission gear 144 is an incomplete gear. It can be that only the first transmission gear 142 is an incomplete gear, or only the second transmission gear 144 is an incomplete gear, or both the first transmission gear 142 and the second transmission gear 144 are incomplete gears.

[0107] Since at least one of the first transmission gear 142 and the second transmission gear 144 is an incomplete gear, for ease of description, taking the first transmission gear 142 as an example of an incomplete gear, the transmission process is briefly described as follows: During the process of the first transmission member 130 driving the first transmission gear 142 to rotate, since the first transmission gear 142 is an incomplete gear, during the process of the first tooth 131 driving the first transmission gear 142 to rotate, when the tooth surface of the first transmission gear 142 rotates, the first transmission gear 142 disengages from the first tooth 131, so that the first transmission member 130 can no longer drive the first transmission gear 142 to rotate, and thus the second transmission gear 144 cannot drive the door opening member 150 to move, so that the door opening member 150 will no longer move. In this way, the stroke of the door opening member 150 extending out of the box 210 can be controlled.

[0108] Similarly, if the second transmission gear 144 is an incomplete gear, when the second transmission gear 144 rotates under the drive of the first transmission gear 142, if the tooth surface of the second transmission gear 144 rotates to the point that it disengages from the second tooth 152, the second transmission gear 144 will be unable to drive the door opening member 150, thereby causing the door opening member 150 to lose power and stop operating.

[0109] Of course, when both the first transmission gear 142 and the second transmission gear 144 are incomplete gears, the first transmission gear 142 disengages from the first tooth 131 or the second transmission gear 144 disengages from the second tooth 152, thus breaking the transmission relationship between the drive member 110 and the door opening member 150. The drive member 110 cannot drive the door opening member 150 to move. After the door opening member 150 moves a certain distance, it stops moving. The stroke of the door opening member 150 can be controlled, and thus the opening angle of the door 220 can be controlled, improving the user experience.

[0110] Figure 9 It shows Figure 2 Exploded view of the center-opening door device 100, as shown Figure 9As shown, in some embodiments, the door opening device 100 may include a housing 160, which may serve as the mounting base for the entire door opening device 100. The housing 160 has a mounting cavity 162, in which the drive member 110, the first transmission member 130, the second transmission member 140, and the door opening member 150 are all mounted, making the door opening device 100 a single unit. During the assembly of the door opening device 100 to the housing 210, the housing 160 can be directly assembled onto the housing 210.

[0111] Specifically, the housing 160 may include a base 164 and a cover plate 166, which are connected to form a mounting cavity 162. The drive member 110, the first transmission member 130, the second transmission member 140, and the door opening member 150 can be mounted on the base 164. During assembly, the drive member 110, the first transmission member 130, the second transmission member 140, and the door opening member 150 can be mounted on the base 164 first, and then the cover plate 166 can be placed on the base 164 to form the mounting cavity 162.

[0112] Combination Figure 6 and Figure 7 In some embodiments, the first transmission gear 142 is disposed below the second transmission gear 144. Both the first transmission gear 142 and the second transmission gear 144 are mounted on the housing 160. The first transmission gear 142 being disposed below the second transmission gear 144 means that the first transmission gear 142 is disposed between the base 164 and the second transmission gear 144, and the second transmission gear 144 is disposed above the first transmission gear 142.

[0113] Since the second transmission gear 144 meshes with the door opening member 150, the distances between the second transmission gear 144, the door opening member 150, and the base 164 are basically the same. The door opening member 150 moves relative to the base 164. In order to reduce the friction between the door opening member 150 and the base 164, the door opening member 150 and the base 164 can have a certain distance. The second transmission gear 144 is located above the first transmission gear 142, so that the second transmission gear 144 and the base 164 have a certain distance, and the distances between the second transmission gear 144 and the door opening member 150 and the base 164 are approximately the same. This allows the second transmission gear 144 and the door opening member 150 to mesh stably, thereby improving the stability of the transmission between the second transmission gear 144 and the door opening member 150.

[0114] Figure 10 A schematic diagram of the structure of the door opening component 150 provided in an embodiment of this application is shown, as follows: Figure 8 and Figure 10As shown, in some embodiments, the second transmission gear 144 is eccentrically arranged, and the door opening member 150 includes a top door portion 154 and a connecting portion 156. The top door portion 154 and the second tooth portion 152 are both connected to the connecting portion 156. From the direction of the second tooth portion 152 toward the top door portion 154, the distance between the second tooth portion 152 and the connecting portion 156 gradually increases.

[0115] The connecting portion 156 is arranged along the thickness direction Y of the housing 210. The top door portion 154 is located at the end of the connecting portion 156 near the door body 220. The top door portion 154 can be located outside the mounting cavity 162. The direction of the second tooth portion 152 toward the top door portion 154 is in the thickness direction Y. From the housing 210 toward the door body 220, the distance between the second tooth portion 152 and the connecting portion 156 gradually increases. For ease of description, the end of the first tooth pitch near the top door portion 154 is defined as the first meshing end, and the end away from the top door portion 154 is defined as the second meshing end. The distance between the first meshing end and the connecting portion 156 is greater than the distance between the second meshing end and the connecting portion 156. Similarly, for ease of description, the two ends of the tooth surface of the second transmission gear 144 are defined as the first transmission end and the second transmission end, respectively. Since the second transmission gear 144 is eccentrically arranged, the distance between the first transmission end and the transmission shaft is defined as less than the distance between the second transmission end and the transmission shaft.

[0116] When the second transmission gear 144 meshes with the door opening member 150, the first transmission end meshes with the first meshing end. Since the distance between the first transmission end and the transmission shaft is relatively close, the torque between the second transmission gear 144 and the door opening member 150 is relatively large, which allows the door opening member 150 to break through the door sealing force with a large force and open the door body 220. During the rotation of the second transmission gear 144, the distance between the transmission teeth of the second transmission gear 144 and the transmission shaft gradually increases, which makes the torque smaller and the speed larger, thereby enabling the door opening member 150 to open the door body 220 at a larger speed.

[0117] In other words, in this embodiment, during the movement of the door opening member 150 driven by the second transmission gear 144, the force of the door opening member 150 changes from large to small, while the moving speed of the door opening member 150 changes from small to large. This arrangement allows the door opening member 150 to break through the door seal with greater force in the initial stage of opening and to push open the door body 220 at a faster speed in the later stage. Therefore, by changing the engagement method of the second transmission gear 144 and the second tooth 152, the second transmission gear 144 can achieve variable speed and force during the driving of the door opening member 150, enabling the door body 220 to be opened quickly and increasing the opening speed.

[0118] In addition, different driving methods (variable force and variable speed) can be achieved through the same drive structure, which can reduce the number of parts in the entire door opening device 100 and make the layout of the entire door opening device 100 more compact.

[0119] In some embodiments, the second tooth 152 is disposed on one side of the connecting portion 156, and the second transmission gear 144, the first transmission member 130 and the driving member 110 are all disposed on the side of the second tooth 152 away from the connecting portion 156.

[0120] The second tooth 152 being disposed on one side of the connecting part 156 means that the second tooth 152 is disposed on one side of the connecting part 156 along the width direction X of the housing 210. The connecting part 156 and the second transmission gear 144 are disposed on different sides of the second tooth 152, which can reduce the risk of interference between the top door part 154 and other components such as the drive member 110 during the process of the connecting part 156 driving the top door part 154 to move, and can improve the stability of the entire door opening device 100.

[0121] In some embodiments, the first transmission member 130 is arranged along a set direction, and under the drive of the driving member 110, the first transmission member 130 moves along the set direction, wherein the set direction is set at an angle to the opening direction of the door opening member 150.

[0122] The set direction is the width direction X of the housing 210, the opening direction refers to the movement of the top door 154, and the opening direction is the thickness direction Y of the housing 210. The first transmission member 130 moves along the set direction (width direction X of the housing 210). The set direction and the opening direction are set at an angle so that the first transmission member 130 and the top door 154 can move in different directions, so that the movement directions of the top door 154 and the first transmission member 130 can be independent of each other, so that the housing 160 can be subjected to forces in different directions, thereby improving the strength of the housing 160.

[0123] In addition, since the first transmission member 130 moves along the width direction X of the housing 210, the first transmission member 130 can drive multiple different first transmission gears 142, thereby driving the opening of multiple doors 220. Multiple doors 220 can be opened by one first transmission member 130, which can reduce the number of parts of the door opening device 100.

[0124] Figure 11 It shows Figure 2 The provided door opening device 100 is shown in a bottom view without the base 164. (Example) Figure 10As shown, in some embodiments, the first tooth portion 131 includes a plurality of first transmission teeth 131a, and the outer peripheral surface of the first transmission gear 142 has second transmission teeth 142a and is also provided with a clearance groove 142b. The clearance groove 142b is disposed near at least one second transmission tooth 142a, and the first transmission teeth 131a may be disposed in the clearance groove 142b. The second transmission teeth 142a are disposed on the outer peripheral surface of the second transmission gear 144, and the clearance groove 142b is also disposed on the outer peripheral surface of the second transmission gear 144. That is, the plurality of second transmission teeth 142a and the clearance groove 142b are all disposed on the outer peripheral surface of the second transmission gear 144, and the clearance groove 142b is disposed near at least one second transmission tooth 142a. The clearance groove 142b may be disposed only near the outermost second transmission tooth 142a, or it may be disposed between two second transmission teeth 142a. The specific placement position can be determined according to the position of the first transmission teeth 131a of the first transmission member 130.

[0125] The first transmission tooth 131a can be disposed in the clearance groove 142b. This can be either when the first transmission member 130 is not in operation, in which case the first transmission tooth 131a is disposed in the clearance groove 142b, or when the first transmission member 130 drives the first transmission gear 142 to move, in which case the first transmission tooth 131a is disposed in the clearance groove 142b. It should be noted that since there are multiple first transmission teeth 131a, any one of the first transmission teeth 131a disposed in the clearance groove 142b can be used.

[0126] During the process of the driving component 110 driving the first transmission component 130 to move, after the multiple first transmission teeth 131a mesh with the multiple second transmission teeth 142a respectively and establish a transmission relationship, they can be transmitted to the door opening component 150, causing the door opening component 150 to move towards the door body 220. The clearance groove 142b is set close to at least one second transmission tooth 142a, so that the first transmission tooth 131a can be set on one side of the second transmission tooth 142a. During the meshing of the first transmission tooth 131a and the second transmission tooth 142a, the tooth surface of the first transmission tooth 131a can mesh with the tooth surface of the second transmission tooth 142a, reducing the occurrence of tooth breakage between the first transmission tooth 131a and the second transmission tooth 142a during the establishment of the transmission connection, thereby improving the transmission stability of the first transmission tooth 131a and the second transmission tooth 142a, improving the transmission stability of the entire door opening device 100, and thus improving the door opening effect.

[0127] Figure 12 It shows Figure 11 A magnified view of a portion of point A, as shown below. Figure 11 and Figure 12As shown, in some embodiments, a plurality of first transmission teeth 131a are arranged along the extension direction of the first transmission member 130, and the most end first transmission tooth 131a may be disposed in the clearance groove 142b.

[0128] The first transmission member 130 is elongated and is arranged along the width direction X of the housing 210. Multiple first transmission teeth 131a are also arranged along the extension direction of the first transmission member 130. The multiple first transmission teeth 131a can be considered as a transmission rack (the multiple first transmission teeth 131a are elongated). The first transmission member 130 moves approximately in a straight line, and drives the first transmission gear 142 to rotate through the meshing of the first transmission teeth 131a and the second transmission teeth 142a.

[0129] Since the multiple first transmission teeth 131a are elongated, the outermost first transmission tooth 131a refers to the outermost first transmission tooth 131a. It can be the outermost first transmission tooth 131a, the outermost two first transmission teeth 131a, or the outermost three first transmission teeth 131a. In the embodiments of this application, the outermost first transmission tooth 131a is used as the outermost side transmission tooth for the description. For ease of description, the outermost first transmission tooth 131a is defined as the first connecting tooth 131c.

[0130] In other words, the first connecting tooth 131c is along the extending direction of the first transmission member 130. The first first transmission tooth 131a or the last first transmission tooth 131a may be located in the clearance groove 142b before the first transmission member 130 and the first transmission gear 142 establish a transmission connection.

[0131] When the drive unit 110 is in the working state, the first transmission gear 131a and the second transmission gear 142a are not meshed. After the drive unit 110 is started, the first transmission gear 131a and the second transmission gear 142a gradually mesh and establish a transmission relationship. Since the first transmission unit 130 and the first transmission gear 142 move in different directions, tooth knocking and tooth collision interference are likely to occur during the process of establishing the transmission connection.

[0132] During the process of establishing a transmission connection between the first transmission tooth 131a and the second transmission tooth 142a, the first connecting tooth 131c first contacts the second transmission tooth 142a of the first transmission gear 142. Before the multiple first transmission teeth 131a and multiple second transmission teeth 142a establish a transmission connection, the first connecting tooth 131c is set in the clearance groove 142b, which allows the first connecting tooth 131c to be positioned close to the side of the second transmission tooth 142a in the clearance groove 142b. When the driving member 110 drives the first transmission member 130 to move, the first connecting tooth 131c contacts the tooth surface of the adjacent second transmission tooth 142a, thereby enabling transmission. This configuration allows the first connecting tooth 131c to directly contact the tooth surface of the second transmission tooth 142a, reducing the likelihood of tooth collisions between the first transmission tooth 131a and the second transmission tooth 142a during the establishment of the transmission connection. This improves the transmission stability of the first transmission tooth 131a and the second transmission tooth 142a, enhances the overall transmission stability of the door opening device 100, and thus improves the door opening effect.

[0133] The first connecting tooth 131c is disposed in the clearance groove 142b, so that the first tooth of the plurality of first transmission teeth 131a can be connected to the plurality of second transmission teeth 142a, so that the plurality of first transmission teeth 131a on the entire first transmission member 130 can be connected to the second transmission teeth 142a, thereby increasing the distance that the door member 150 extends out of the box 210 and increasing the opening angle of the door 220.

[0134] In addition, the first connecting tooth 131c is set in the clearance groove 142b, so that when the door body 220 is opened at the same angle, the length of the first transmission member 130 can be minimized, and the volume occupied by the first transmission member 130 can also be reduced, so that the entire door opening device 100 can be miniaturized.

[0135] In some embodiments, a plurality of second transmission teeth 142a are arranged sequentially along the outer peripheral surface of the first transmission gear 142, and a clearance groove 142b is provided on the outer peripheral surface of the first transmission gear 142 and is located close to the outermost second transmission tooth 142a among the plurality of second transmission teeth 142a.

[0136] Since the second transmission tooth 142a is along part of the outer circumference of the first transmission gear 142, i.e. the first transmission gear 142 is an incomplete gear, the outermost second transmission tooth 142a of the plurality of second transmission teeth 142a refers to the transmission tooth at the very end of the plurality of second transmission teeth 142a. For ease of description, the transmission tooth at the very end of the plurality of second transmission teeth 142a is defined as the second connecting tooth 142c.

[0137] The clearance groove 142b is located close to the second connecting tooth 142c, that is, the clearance groove 142b is located outside the transmission teeth of the entire first transmission gear 142. The first transmission tooth 131a (first connecting tooth 131c) can establish a transmission connection with the first transmission gear 142 starting from the second connecting tooth 142c, so that multiple first transmission teeth 131a and multiple second transmission teeth 142a can mesh and rotate, so that the first transmission member 130 and the first transmission gear 142 can mesh starting from the first transmission tooth, which can increase the length of the door opening member 150 extending to the box 210, thereby ensuring the opening angle.

[0138] In some embodiments, the tooth surface of the second transmission tooth 142a is configured as the sidewall of the clearance groove 142b. When the first connecting tooth 131c is positioned within the clearance groove 142b, the tooth surface of the first connecting tooth 131c can directly contact the tooth surface of the second transmission tooth 142a (second connecting tooth 142c), thereby driving the first transmission gear 142 to rotate. This allows the second transmission gear 144 to drive the door opening member 150 to move. This configuration reduces the engagement resistance between the first transmission tooth 131a (first connecting tooth 131c) and the second transmission tooth 142a (second connecting tooth 142c), thus simplifying transmission.

[0139] In some embodiments, the outer peripheral surface of the first transmission gear 142 is further provided with a stop portion 142d, and a clearance groove 142b is disposed between the stop portion 142d and the outermost second transmission tooth 142a among a plurality of second transmission teeth 142a. That is, the clearance groove 142b is disposed between the stop portion 142d and the second connecting tooth 142c, and the stop portion 142d can limit the first connecting tooth 131c, in the case where the first connecting tooth 131c disengages from the clearance groove 142b.

[0140] In some embodiments, the stop portion 142d may also be a transmission tooth, and the clearance groove 142b may be a groove formed after removing the transmission tooth between the stop portion 142d and the first connecting tooth 131c.

[0141] like Figure 11 As shown, in some embodiments, the door opening device 100 further includes a reset member 172. One end of the reset member 172 is connected to the door opening member 150, and the other end is connected to the housing 160. The reset member 172 can provide a restoring force for the door opening member 150 to reset. This allows the first tooth of the door opening member 150 to mesh with the first tooth of the second transmission gear 144, thereby reducing the possibility of misalignment, ensuring the extension length of the door opening member 150, and thus ensuring the opening angle.

[0142] Specifically, a first limiting part 157 and a second limiting part 158 ​​can be provided on the door opening member 150, and a first stop part 164a and a second stop part 164b can be provided on the base 164. When the door opening member 150 opens the door body 220, the first limiting part 157 and the first stop part 164a abut against each other, thereby limiting the maximum distance of the door opening member 150 extending. When the door opening member 150 retracts into the base 164, the second limiting part 158 ​​and the second stop part 164b abut against each other, thereby limiting the distance of the door opening member 150 resetting.

[0143] Figure 13 Based on the same inventive concept, this application provides an electrical device 10, including a housing 210, a first door 221, a second door 223 and the aforementioned door opening device 100, wherein the door opening device 100 is disposed in the housing 210.

[0144] This application provides an electrical appliance 10, including a housing 210, a first door 221, a second door 223, and the aforementioned door opening device 100, wherein the door opening device 100 is disposed in the housing 210. The electrical appliance 10 may be an appliance such as a refrigerator or a commercial freezer.

[0145] In some embodiments, the electrical appliance 10 further includes a decorative cover 230, which is connected to the housing 210 and forms a fixed cavity with the housing 210. The door opening device 100 is disposed in the fixed cavity. The decorative cover 230 can protect the door opening device 100.

[0146] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0147] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0148] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A door opening device characterized by comprising: The application relates to a door opening and closing device. The device comprises a driving member (110), a first transmission member (130) in transmission connection with the driving member (110), a first rotating member (140a) in transmission connection with the first transmission member (130) and a first door opening member (150a), a second rotating member (140b) in transmission connection with the first transmission member (130) and a second door opening member (150b). The first transmission member (130) is arranged between the first door opening member (150a) and the second door opening member (150b), and is in transmission connection with the first rotating member (140a) and separated from the second rotating member (140b). Alternatively, the first transmission member (130) is in transmission connection with the second rotating member (140b) and separated from the first rotating member (140a). The length of the first transmission member (130) is less than or equal to the distance between the rotating center of the first rotating member (140a) and the rotating center of the second rotating member (140b). The transmission length of the first transmission member (130) is greater than the transmission length of the first rotating member (140a) and the second rotating member (140b).

2. The door opening device according to claim 1, characterized in that The first transmission member (130) comprises a first transmission rack (132), and the driving member (110), the first rotating member (140a) and the second rotating member (140b) are in meshing connection with the first transmission rack (132).

3. The door opening device according to claim 2, characterized in that The first transmission member (130) comprises a first transmission rack (132) and a second transmission rack (134) arranged oppositely, the first rotating member (140a) and the second rotating member (140b) are in transmission connection with the first transmission rack (132), and the driving member (110) is in transmission connection with the second transmission rack (134).

4. The door opening device according to claim 2, characterized in that The first transmission member (130) has a first detection part (135) and a second detection part (136) arranged at intervals, the first detection part (135) is arranged close to the first door opening member (150a), and the second detection part (136) is arranged close to the second door opening member (150b).

5. The door opening device according to claim 2, characterized in that The first detection part (135) and the second detection part (136) are arranged between the first door opening member (150a) and the second door opening member (150b), the first detection part (135) is arranged close to the first door opening member (150a), and the second detection part (136) is arranged close to the second door opening member (150b).

6. The door opening device according to any one of claims 1 to 5, characterized in that The first detection part (135) and the second detection part (136) are arranged between the first door opening member (150a) and the second door opening member (150b), the first detection part (135) is arranged close to the first door opening member (150a), and the second detection part (136) is arranged close to the second door opening member (150b). ​ The driving member (110) can drive the first transmission member (130) to move towards the first door opening member (150a) so that the first rotating member (140a) drives the first door opening member (150a) to move, and in the case that the second detection member (176) detects the arrival signal of the first detection part (135), the driving member (110) drives the first transmission member (130) to move away from the second door opening member (150b), and in the case that the first detection member (174) detects the arrival signal of the first detection part (135) and / or the second detection member (176) detects the arrival signal of the second detection part (136), the driving member (110) stops working. The first detection part (135) and the second detection part (136) are arranged between the first door opening member (150a) and the second door opening member (150b).

7. The door opening device according to claim 6, characterized in that The first transmission member (130) can reciprocate linearly between the first door opening member (150a) and the second door opening member (150b) under the driving of the driving member (110).

8. The door opening device according to any one of claims 1 to 5, characterized in that The driving member (110) is arranged between the first door opening member (150a) and the second door opening member (150b).

9. The door opening device according to any one of claims 1 to 5, characterized in that The door opening device (100) comprises a box body (210), a first door body (221), a second door body (223), and the door opening device (100) according to any one of claims 1-9, the first door body (221) and the second door body (223) are rotationally connected with the box body (210), the first door opening member (150a) is arranged corresponding to the first door body (221), and the second door opening member (150b) is arranged corresponding to the second door body (223).

10. An electrical appliance characterized by ​

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