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 part, a first transmission part, a second transmission part and a door opening part, the first transmission part is in transmission connection with the driving part, and the first transmission part is provided with a plurality of first transmission teeth; the second transmission part comprises a first transmission part and a second transmission part, and a plurality of second transmission teeth meshed with the first transmission teeth are arranged on the peripheral surface of the first transmission part; the door opening piece is in transmission connection with the second transmission part; wherein an avoiding groove is further formed in the peripheral surface of the first transmission part, the avoiding groove is arranged close to at least one second transmission tooth, the first transmission tooth can be arranged in the avoiding groove, and the situation that the first transmission tooth and the second transmission tooth break in the process of establishing transmission connection is reduced; therefore, the transmission stability of the first transmission gear and the second transmission gear can be improved, the transmission stability of the whole door opening device is improved, and the door opening effect can be improved.

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] To improve user experience and reduce the difficulty of opening the door, a door opening mechanism is installed in the appliance. This mechanism, mounted on the refrigerator body, automatically opens the door. During the opening process, a drive unit activates a transmission unit, which in turn moves the door opening mechanism, causing it to protrude from the refrigerator body and push the door open. In related technologies, gear meshing is used to improve the stability of the transmission between the transmission unit and the door opening mechanism. However, gear meshing can be unstable in the initial stages of engagement. Utility Model Content

[0004] This application aims to at least partially solve the technical problem of unstable meshing. To this end, this application provides a door opening device and an electrical appliance.

[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, wherein the first transmission component is connected to the driving component in a transmission manner, and the first transmission component has a plurality of first transmission teeth;

[0007] The second transmission component includes a first transmission part and a second transmission part, wherein the first transmission part has a plurality of second transmission teeth that mesh with the first transmission teeth.

[0008] The door opening component is connected to the second transmission unit in a transmission manner;

[0009] The second transmission part is further provided with a clearance groove, which is located near at least one of the second transmission teeth, and the first transmission tooth can be located in the clearance groove.

[0010] During the process of the driving component driving the first transmission component, after multiple first transmission teeth mesh with multiple second transmission teeth respectively and establish a transmission relationship, the transmission can be transmitted to the door opening component, causing the door opening component to move towards the door body. The clearance groove is set close to at least one second transmission tooth, so that the first transmission tooth can be set on one side of the second transmission tooth. During the meshing of the first and second transmission teeth, the tooth surface of the first transmission tooth can mesh with the tooth surface of the second transmission tooth, reducing the possibility of tooth knocking during the establishment of the transmission connection between the first and second transmission teeth. This improves the stability of the transmission between the first and second transmission teeth, enhances the stability of the entire door opening device, and thus improves the door opening effect.

[0011] In an optional embodiment of this application, a plurality of second transmission teeth are arranged sequentially along the outer peripheral surface of the first transmission part, and the clearance groove is arranged on the outer peripheral surface of the first transmission part and close to the outermost second transmission tooth among the plurality of second transmission teeth.

[0012] In an optional embodiment of this application, the tooth surface of the second transmission tooth is configured as the sidewall of the clearance groove.

[0013] In an optional embodiment of this application, the outer peripheral surface of the first transmission part is further provided with a stop part, and the clearance groove is disposed between the stop part and the outermost second transmission tooth among the plurality of second transmission teeth.

[0014] In an optional embodiment of this application, a plurality of the first transmission teeth are arranged along the extension direction of the first transmission member, and the most distal first transmission tooth may be disposed in the clearance groove.

[0015] In an optional embodiment of this application, there are two door opening components and two second transmission components, both of which are connected to the first transmission component, and one second transmission component is connected to one door opening component.

[0016] In an optional embodiment of this application, each of the first transmission parts of the second transmission member is provided with the clearance groove, and the two first transmission teeth at both ends of the first transmission member are respectively disposed in the clearance grooves of the two first transmission parts.

[0017] In an optional embodiment of this application, the first transmission member is disposed between the two door opening members and can reciprocate between the two door opening members.

[0018] In an optional embodiment of this application, a plurality of the first transmission teeth are disposed on the same side of the first transmission member, and two first transmission parts are disposed on the same side of the first transmission member.

[0019] Secondly, embodiments of this application provide an electrical device, including a housing, a door, and the door opening device described in the first aspect, wherein the door opening device is disposed in the housing.

[0020] 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

[0021] 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.

[0022] Figure 1 A schematic diagram of the structure of the electrical equipment provided in the embodiments of this application is shown.

[0023] Figure 2 An exploded view of the door opening device provided in an embodiment of this application is shown.

[0024] Figure 3 A schematic diagram of the door opening device provided in this application embodiment with the cover plate removed is shown.

[0025] Figure 4 It shows Figure 3 The provided door opening device has its base removed from the bottom view.

[0026] Figure 5 It shows Figure 4 A magnified view of a portion of point A in the middle.

[0027] Figure 6 A schematic diagram of the door opening component provided in an embodiment of this application is shown.

[0028] Figure 7 A schematic diagram of the opening device provided in some other embodiments is shown.

[0029] Figure 8 A schematic diagram of the door opening device installed in the box is shown.

[0030] Figure 9 A schematic diagram of the structure with the first door open is shown.

[0031] Figure 10 A schematic diagram of the structure with the second door open is shown.

[0032] Figure 11 A schematic diagram of the first transmission component resetting structure is shown.

[0033] Figure 12A schematic diagram of the structure of the electrical equipment provided in the embodiments of this application is shown.

[0034] Reference numerals: 100-Door opening device, 110-Driver, 112-Motor, 114-Transmission wheel, 120-Transmission assembly;

[0035] 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;

[0036] 140 - Second transmission component, 142 - First transmission part, 142a - Second transmission tooth, 142b - Clearance groove, 142c - Second connecting tooth, 142d - Stop part, 144 - Second transmission part, 140a - First rotating component, 140b - Second rotating component;

[0037] 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;

[0038] 160-Housing, 162-Mounting cavity, 164-Base, 164a-First stop, 164b-Second stop, 166-Cover plate;

[0039] 172 - Reset component, 174 - First inspection component, 176 - Second inspection component;

[0040] 10-Electrical equipment, 210-Box body, 220-Door body, 221-First door body, 223-Second door body, 230-Decorative cover. Detailed Implementation

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] To improve user experience and reduce the difficulty of opening the door, a door opening device is installed in the appliance. This device, mounted on the refrigerator body, automatically opens the door. During the opening process, a drive component moves a transmission component, which in turn moves the door opening component, causing it to protrude from the refrigerator body and push open the door. In related technologies, gear meshing is used to improve the stability of the transmission between the transmission component and the door opening component. However, gear meshing can be unstable in the initial stages of engagement. The door opening device provided in this application improves upon these issues, enhancing the stability of the door opening mechanism and improving the door opening efficiency.

[0047] This application is described below with reference to the accompanying drawings and specific embodiments:

[0048] Figure 1The 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 is applied to the electrical device 10. The electrical device 10 includes a housing 210 and a door 220 rotatably connected to the housing 210. The door opening device 100 can be installed on the housing 210 of the electrical device 10. The door opening device 100 provided in this embodiment of the application can improve the stability of the transmission of the door opening device 100 and improve the door opening effect.

[0049] 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, width, and thickness directions are defined. The height direction is the vertical direction of the refrigerator in use, the thickness direction is the direction from the refrigerator body 210 towards the door body 220, and the width direction is perpendicular to both the height and thickness directions.

[0050] Figure 2 An exploded view of the door opening device 100 provided in an embodiment of this application is shown. Figure 3 This paper shows a top view of the door opening device 100 provided in an embodiment of this application without the cover plate 166. Figure 4 The following is a bottom view of the door opening device 100 provided in an embodiment of this application without its base, as shown. Figure 2 , Figure 3 and Figure 4 In this embodiment, the door opening device 100 includes: a driving member 110, a first transmission member 130, a second transmission member 140, and a door opening member 150. The first transmission member 130 is connected to the driving member 110 and has a plurality of first transmission teeth 131a. The second transmission member 140 includes a first transmission part 142 and a second transmission part 144 coaxially arranged. The first transmission part 142 has a plurality of second transmission teeth 142a that mesh with the first transmission teeth 131a. The door opening member 150 is connected to the second transmission part 144.

[0051] The first transmission component 130 and the second transmission component 140 together form 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, which are not specifically limited in this application embodiment.

[0052] The coaxial arrangement of the first transmission part 142 and the second transmission part 144 means that the first transmission part 142 and the second transmission part 144 can be connected to the same transmission shaft. After the first transmission member 130 drives the first transmission part 142, the first transmission part 142 can drive to the second transmission part 144, and then drive to the door opening member 150 through the second transmission part 144.

[0053] 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 is connected to the first transmission part 142 to transmit power to the first transmission part 142. The first transmission part 142 is connected to the second transmission part 144 to transmit power to the second transmission part 144. The second transmission part 144 is connected to the door opening member 150 to transmit power to the door opening member 150, so that the door opening member 150 can open the door 220.

[0054] In some embodiments, both the first transmission part 142 and the second transmission part 144 can be transmission gears, which are driven by gear meshing. At least one of the first transmission part 142 and the second transmission part 144 is an incomplete gear. It can be that only the first transmission part 142 is an incomplete gear, or only the second transmission part 144 is an incomplete gear, or both the first transmission part 142 and the second transmission part 144 are incomplete gears.

[0055] Since at least one of the first transmission part 142 and the second transmission part 144 is an incomplete gear, for ease of description, taking the first transmission part 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 part 142 to rotate, since the first transmission part 142 is an incomplete gear, during the process of the first tooth 131 driving the first transmission part 142 to rotate, when the tooth surface of the first transmission part 142 rotates, the first transmission part 142 disengages from the first tooth 131, so that the first transmission member 130 can no longer drive the first transmission part 142 to rotate, and thus the second transmission part 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.

[0056] Similarly, if the second transmission part 144 is an incomplete gear, when the second transmission part 144 rotates under the drive of the first transmission part 142, if the tooth surface of the second transmission part 144 rotates to the point of disengaging from the second tooth part 152, the second transmission part 144 will be unable to transmit power to the door opening member 150, thereby causing the door opening member 150 to lose power and stop operating.

[0057] Of course, when both the first transmission part 142 and the second transmission part 144 are incomplete gears, the first transmission part 142 disengages from the first tooth 131 or the second transmission part 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.

[0058] The outer peripheral surface of the first transmission part 142 is also provided with a clearance groove 142b. The clearance groove 142b is located near at least one second transmission tooth 142a, and the first transmission tooth 131a can be located in the clearance groove 142b. The second transmission tooth 142a is located on the outer peripheral surface of the second transmission part 144, and the clearance groove 142b is also located on the outer peripheral surface of the second transmission part 144. That is, multiple second transmission teeth 142a and clearance grooves 142b are all located on the outer peripheral surface of the second transmission part 144. The clearance groove 142b is located near at least one second transmission tooth 142a. It can be located only near the outermost second transmission tooth 142a, or it can be located between two second transmission teeth 142a. The specific location can be determined according to the position of the first transmission tooth 131a of the first transmission member 130.

[0059] 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, or when the first transmission member 130 drives the first transmission part 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.

[0060] 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.

[0061] Figure 5 It shows Figure 4 A magnified view of a portion of point A, as shown below. Figure 5 As 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.

[0062] The first transmission member 130 is elongated and is arranged along the width direction 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 the first transmission part 142 is driven to rotate through the meshing of the first transmission teeth 131a and the second transmission teeth 142a.

[0063] 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.

[0064] In other words, the first connecting tooth 131c is along the extending direction of the first transmission member 130. Before the first transmission member 130 and the first transmission part 142 establish a transmission connection, the first connecting tooth 131c can be disposed in the clearance groove 142b.

[0065] When the drive unit 110 is in the working state, the first transmission tooth 131a and the second transmission tooth 142a are not engaged. After the drive unit 110 is started, the first transmission tooth 131a and the second transmission tooth 142a gradually engage and establish a transmission relationship. Since the first transmission unit 130 and the first transmission part 142 move in different directions, tooth knocking and interference are likely to occur during the process of establishing the transmission connection.

[0066] 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 part 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, so that the first connecting tooth 131c is set close to the side of the second transmission tooth 142a near 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 realizing 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.

[0067] 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.

[0068] 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.

[0069] In some embodiments, a plurality of second transmission teeth 142a are arranged sequentially along the outer peripheral surface of the first transmission part 142, and a clearance groove 142b is provided on the outer peripheral surface of the first transmission part 142 and is located close to the outermost second transmission tooth 142a among the plurality of second transmission teeth 142a.

[0070] Since the second transmission tooth 142a is along part of the outer peripheral surface of the first transmission part 142, i.e., the first transmission part 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.

[0071] The clearance groove 142b is located near the second connecting tooth 142c, meaning that the clearance groove 142b is located outside the transmission teeth of the entire first transmission part 142. The first transmission tooth 131a (first connecting tooth 131c) can establish a transmission connection with the first transmission part 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. This allows the first transmission member 130 and the first transmission part 142 to mesh starting from the first transmission tooth, which can increase the length of the door opening member 150 extending to the box body 210, thereby ensuring the opening angle.

[0072] 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 disposed 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 part 142 to rotate, and enabling the second transmission part 144 to drive the door opening member 150 to move. This arrangement 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 the transmission process.

[0073] In some embodiments, the outer peripheral surface of the first transmission part 142 is further provided with a stop part 142d, and a clearance groove 142b is disposed between the stop part 142d and the outermost second transmission tooth 142a among the plurality of second transmission teeth 142a. That is, the clearance groove 142b is disposed between the stop part 142d and the second connecting tooth 142c, and the stop part 142d can limit the first connecting tooth 131c, in the case where the first connecting tooth 131c disengages from the clearance groove 142b.

[0074] 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.

[0075] In some embodiments, the first tooth 131 includes a first transmission rack 132 and a second transmission rack 134 disposed opposite to each other, the first transmission rack 131a meshes with the first transmission rack 132, and the drive member 110 meshes with the second transmission rack 134.

[0076] The first transmission gear 131a 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 transmission gear 131a. 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.

[0077] In addition, the first transmission rack 132 can also be arranged on the side of the first transmission member 130 away from the door 220. Since the drive member 110 may generate noise during operation, setting the drive member 110 on the side of the first transmission member 130 away from the door 220 allows the drive member 110 to be positioned away from the door 220. Since users will stand approximately at the door 220 when taking items out of the refrigerator, positioning the drive member 110 away from the door 220 can reduce the noise transmitted to the door 220, thereby reducing the impact of the drive member 110 on the user during operation and improving the user experience.

[0078] Figure 5 A top view of the door opening device 100 without the cover plate 166 is shown. Figure 6 A schematic diagram of the structure of the door opening component 150 provided in an embodiment of this application is shown below. Figure 5 and Figure 6 In some embodiments, the second transmission part 144 is eccentrically arranged, and the door opening part 150 includes a top door part 154 and a connecting part 156. The top door part 154 and the second tooth part 152 are both connected to the connecting part 156. The distance between the second tooth part 152 and the connecting part 156 gradually increases from the direction of the second tooth part 152 toward the top door part 154.

[0079] The connecting portion 156 is arranged along the thickness direction of the housing 210, and 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 towards the top door portion 154 is in the thickness direction, and the distance between the second tooth portion 152 and the connecting portion 156 gradually increases from the housing 210 towards the door body 220. 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 portion 144 are defined as the first transmission end and the second transmission end, respectively. Since the second transmission portion 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.

[0080] When the second transmission part 144 engages with the door opening member 150, the first transmission end engages with the first engagement end. Since the distance between the first transmission end and the transmission shaft is relatively close, the torque between the second transmission part 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 larger force and open the door body 220. During the rotation of the second transmission part 144, the distance between the transmission teeth of the second transmission part 144 and the transmission shaft gradually increases, which reduces the torque and increases the speed, thereby enabling the door opening member 150 to open the door body 220 at a larger speed.

[0081] In other words, in this embodiment, during the movement of the door opening member 150 driven by the second transmission part 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 part 144 and the second toothed part 152, the second transmission part 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.

[0082] In addition, different driving methods (variable power 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.

[0083] In some embodiments, the second tooth 152 is disposed on one side of the connecting portion 156, and the second transmission portion 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.

[0084] 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 of the housing 210. The connecting part 156 and the second transmission part 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.

[0085] Figure 7 It shows Figure 3 Another top view of the provided door opening device 100, such as Figure 7As 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 part 144, thereby reducing the possibility of misalignment, ensuring the extension length of the door opening member 150, and thus ensuring the opening angle.

[0086] 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.

[0087] In some embodiments, there are two door opening components 150 and two second transmission components 140. Both second transmission components 140 are connected to the first transmission component 130, and one second transmission component 140 is connected to one door opening component 150.

[0088] Electrical appliance 10 may have a double-door configuration, such as double-door refrigerators which are widely used. Two door opening components 150 and two second transmission components 140 are provided. The two second transmission components 140 are driven by the same drive component 110 and the first transmission component 130, which in turn drives the two door opening components 150 to move, thereby opening the two doors 220. This configuration allows the same door opening device 100 to open the two doors 220, increasing the application scenarios of the door opening device 100.

[0089] In addition, two doors 220 can be opened by one door opening device 100, and two second transmission components 140 can be driven by one drive component 110, which can reduce the number of parts, making the door opening device 100 compact and reducing manufacturing costs.

[0090] In some embodiments, each of the first transmission portions 142 of the second transmission member 140 is provided with a clearance groove 142b, and the two first transmission teeth 131a at both ends of the first transmission member 130 are respectively disposed in the clearance grooves 142b of the two first transmission portions 142.

[0091] The first transmission component 130 is elongated, with the first transmission teeth 131a at both ends being first connecting teeth 131c, which cooperate with the corresponding clearance grooves 142b. This arrangement can improve the stability of the transmission cooperation between the first transmission component 130 and the two second transmission components 140.

[0092] In some embodiments, the first transmission member 130 is disposed between the two door opening members 150 and can reciprocate between the two door opening members 150. The first transmission member 130 is elongated and can reciprocate between the two door opening members 150 under the drive of the drive member 110. The same first transmission member 130 can drive two second transmission members 140 respectively, and the linear reciprocating motion path is small, which can save power and cost.

[0093] 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.

[0094] In some embodiments, a plurality of first transmission teeth 131a are disposed on the same side of the first transmission member 130, and two first transmission parts 142 are disposed on the same side of the first transmission member 130. This arrangement facilitates the transmission of the first transmission member 130 with the two first transmission parts 142.

[0095] In some embodiments, there are two door opening components 150 and two transmission components 140. Both second transmission components 140 are connected to the first transmission component 130, and each second transmission component 140 is connected to one door opening component 150. For ease of description, the two second transmission components 140 are defined as a first rotating component 140a and a second rotating component 140b, and the two door opening components 150 are defined as a first door opening component 150a and a second door opening component 150b. It should be noted that the first rotating component 140a and the second rotating component 140b have the same structure as the second transmission component 140 described above, and will not be repeated here. Similarly, the first door opening component 150a and the second door opening component 150b also have the same structure as the door opening component 150 described above.

[0096] Figure 8The diagram shows a door body 220, an opening member 150 including a first opening member 150a and a second opening member 150b, a second transmission member 140 including a first rotating member 140a and a second rotating member 140b, and an opening device 100 including a first detection member 174 and a second detection member 176. Both the first detection member 174 and the second detection member 176 are disposed between the first opening member 150a and the second opening member 150b, with the first detection member 174 positioned closer to the first opening member 150a and the second detection member 176 positioned closer to the second opening member 150b. The first transmission member 130 has a first detection part 135 and a second detection part 136 spaced apart, with the first detection part 135 positioned closer to the first opening member 150a and the second detection part 136 positioned closer to the second opening member 150b.

[0097] 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.

[0098] 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.

[0099] The first detection element 174 and the second detection element 176 are both disposed between the first door opening element 150a and the second door opening element 150b, with the first detection element 174 disposed closer to the first door opening element 150a and the second detection element 176 disposed closer to the second door opening element 150b; the first transmission element 130 has a first detection part 135 and a second detection part 136 disposed at intervals, with the first detection part 135 disposed closer to the first door opening element 150a and the second detection part 136 disposed closer to the second door opening element 150b.

[0100] 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.

[0101] Regarding the positions of the first detection element 174 and the second detection element 176, they can be set along the width direction 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.

[0102] Figure 9 A schematic diagram showing the structure of the first door 221 being opened is shown, as follows. Figure 9 As shown, 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. 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 towards the second door opening member 150b, so that the second rotating member 140b drives the second door opening member 150b to move.

[0103] 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.

[0104] 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.

[0105] 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.

[0106] 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.

[0107] 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.

[0108] 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.

[0109] Figure 10 A schematic diagram showing the structure of the second door 223 being opened is shown, as follows. Figure 10 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.

[0110] 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.

[0111] 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.

[0112] Figure 11 A schematic diagram of the resetting structure of the first transmission component 130 is shown, as follows: Figure 11As 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.

[0113] 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.

[0114] If at least one of the following two conditions is met, it can be concluded that the first transmission member 130 has been reset.

[0115] 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.

[0116] Figure 12 A schematic diagram of the structure of the electrical device 10 provided in an embodiment of this application is shown, as follows: Figure 12 As shown, based on the same inventive concept, this application provides an electrical appliance 10, including a housing 210, a door 220, and the aforementioned door opening device 100, wherein the door opening device 100 is disposed on the housing 210. The electrical appliance 10 may be an appliance such as a refrigerator or a commercial freezer.

[0117] 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.

[0118] 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.

[0119] 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.

[0120] 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 in that, include: A driving member (110) and a first transmission member (130), wherein the first transmission member (130) is connected to the driving member (110) in a transmission manner, and the first transmission member (130) has a plurality of first transmission teeth (131a); The second transmission member (140) includes a first transmission part (142) and a second transmission part (144). The outer peripheral surface of the first transmission part (142) has a plurality of second transmission teeth (142a) that mesh with the first transmission teeth (131a). The door opening component (150) has a transmission connection with the second transmission part (144); The outer peripheral surface of the first transmission part (142) is also provided with a clearance groove (142b), which is located close to at least one of the second transmission teeth (142a), and the first transmission tooth (131a) can be disposed in the clearance groove (142b).

2. The door opening device according to claim 1, characterized in that, Multiple second transmission teeth (142a) are arranged sequentially along the outer peripheral surface of the first transmission part (142), and are arranged close to the outermost second transmission tooth (142a) among the multiple second transmission teeth (142a).

3. The door opening device according to claim 2, characterized in that, The tooth surface of the second transmission tooth (142a) is configured as the sidewall of the clearance groove (142b).

4. The door opening device according to claim 2, characterized in that, The outer peripheral surface of the first transmission part (142) is also provided with a stop part (142d), and the clearance groove (142b) is disposed between the stop part (142d) and the outermost second transmission tooth (142a) among the plurality of second transmission teeth (142a).

5. The door opening device according to claim 1, characterized in that, Multiple 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).

6. The door opening device according to any one of claims 1-5, characterized in that, There are two door opening components (150) and two second transmission components (140). Both second transmission components (140) are connected to the first transmission component (130), and one second transmission component (140) is connected to one door opening component (150).

7. The door opening device according to claim 6, characterized in that, Each of the first transmission parts (142) of the second transmission member (140) is provided with the clearance groove (142b), and the two first transmission teeth (131a) at both ends of the first transmission member (130) are respectively disposed in the clearance grooves (142b) of the two first transmission parts (142).

8. The door opening device according to claim 6, characterized in that, The first transmission member (130) is disposed between the two door opening members (150) and can reciprocate between the two door opening members (150).

9. The door opening device according to claim 6, characterized in that, Multiple first transmission teeth (131a) are disposed on the same side of the first transmission member (130), and two first transmission parts (142) are disposed on the same side of the first transmission member (130).

10. An electrical appliance, characterized in that, It includes a housing (210), a door (220), and an opening device (100) as described in any one of claims 1-9, wherein the opening device (100) is disposed on the housing (210).

Images