An automatic door opening refrigerator

Abstract

The present application relates to a kind of automatic door refrigerator, comprising: refrigerator body and two box doors, refrigerator body is connected with box door by adsorption force;The automatic door refrigerator further includes door opening device, it includes: push plate, push plate is slidably connected with the push part of pushing box door;And, power component of driving push plate;Wherein, push plate is connected with the push part with elastic unit, power component drives push plate to move relative to push part so that elastic unit deformation provides the push force of pushing box door;Two push parts overcome the adsorption force of respective corresponding box door as required door opening force is different, power component provides at least two different sizes of push force, to adapt to the different door opening force of two box doors;When power component provides small push force, wherein the door opening force of one box door is adapted to the push force, and the box door is pushed open;And the door opening force of another box door is greater than the push force, and the box door remains closed.

Description

[Technical Field]

[0001] This invention relates to the field of refrigerators, and more specifically to an automatic door-opening refrigerator. [Background Technology]

[0002] In the refrigerator industry, with technological advancements and increased automation, more and more refrigerators are focusing on improving their intelligence. Automatic door opening is a common function in intelligent control. Currently, automatic door opening is often achieved using a door opening device. However, the inventors discovered the following problems during use:

[0003] Firstly, for double-door refrigerators, the existing door opening mechanisms commonly use a single door opening device to control the opening of a single door or a single door opening device to control the opening of both doors simultaneously. However, the current control method of using a single door opening device to control a single door increases the use of drive equipment and increases the complexity of control logic. At the same time, the method of using a single door opening device to control the opening of both doors is often used in French door refrigerators, where both doors often contain the same storage box, and the user only needs to open one door, resulting in a poor user experience. There is a lack of research on achieving both single-door and double-door opening modes using a single door opening device.

[0004] In view of this, it is necessary to develop an automatic door refrigerator to solve the above problems. [Summary of the Invention]

[0005] To address the shortcomings of existing technologies, the present invention aims to provide an automatic door-opening refrigerator, comprising: a refrigerator body and two doors, wherein the refrigerator body and the doors are connected by an adhesive force; the automatic door-opening refrigerator further includes a door-opening device, which includes:

[0006] A push plate, on which a push-pull part for pushing the box door is slidably connected; and

[0007] The power component that drives the push plate;

[0008] Among them, there is an elastic unit connecting the push plate and the top push part. The power component drives the push plate to move relative to the top push part, so that the elastic unit deforms and provides the top push force for the top push box door.

[0009] The two pushing parts overcome the different adsorption forces on their respective corresponding doors that require the opening force, and the power component provides at least two different pushing forces to adapt to the different opening forces of the two doors;

[0010] When the power component provides a small jacking force, the opening force of one of the boxes matches the jacking force, and the box door is opened; while the opening force of the other box door is greater than the jacking force, and the box door remains closed.

[0011] Preferably, the power component and the push plate are connected by a gear and rack transmission. The power component has a toothed gear inside, and the toothed gear has at least two discontinuous toothed sections arranged circumferentially, with the two toothed sections having different numbers of teeth.

[0012] Preferably, a rack is installed on one side of the push plate, and the rack is engaged or disengaged from the toothed gear, thereby enabling intermittent transmission between the power component and the push plate.

[0013] Preferably, the pushers push against different positions of the corresponding boxes, so that the pushers overcome different suction forces on the boxes.

[0014] Preferably, the toothed portion includes a first missing tooth and a second missing tooth, wherein the number of teeth in the first missing tooth is greater than the number of teeth in the second missing tooth;

[0015] When the second missing tooth is engaged with the rack, the box door with the weaker suction force is pushed open by the corresponding push part.

[0016] When the first missing tooth is engaged with the rack, the two pushers will open their respective door openings.

[0017] Preferably, the door opening device also includes a base plate for supporting the components inside the door opening device;

[0018] The base plate is installed on the top of the refrigerator body, and the push-out part extends out of the base plate and abuts against the door.

[0019] Preferably, a reset unit is connected between the base plate and the push plate;

[0020] When the toothed part and the rack are in a meshing state, the push plate moves to drive the reset unit to elastically deform.

[0021] When the toothed part is disengaged from the rack, the reset unit resumes operation to drive the push plate to reset.

[0022] Preferably, the push plate has two parallel sliding grooves, which extend to at least one end face of the push plate and form an opening at the end face of the push plate;

[0023] The pusher is located inside the slide and extends out from the opening, and the elastic unit is housed inside the slide.

[0024] Preferably, a baffle is provided inside the opening;

[0025] The pushing part includes a second limiting block and a first limiting rod extending outward from the side of the second limiting block, the second limiting block and the first limiting rod forming an L-shaped structure;

[0026] The second limiting block is located inside the slide groove, and the first limiting rod extends out from the opening, restricting the second limiting block from sliding out of the opening by a stop block.

[0027] Preferably, the elastic unit is connected to the stop block and the second limiting block respectively.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0029] The present invention provides an automatic door-opening refrigerator, which overcomes the different adsorption forces between the refrigerator body and the door by using two pushing parts, so that the pushing force provided by a single toothed part during the pushing operation can match the different adsorption forces, thereby realizing the switching between opening a single door or opening both doors.

[0030] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it according to the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Specific embodiments of the present invention are given in detail below with reference to the accompanying drawings. [Attached Image Description]

[0031] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0032] Figure 1 This is a partial structural diagram of the refrigerator in this invention;

[0033] Figure 2 This is a three-dimensional structural diagram of the refrigerator top door opening device of the present invention;

[0034] Figure 3 This is a partial structural diagram of the refrigerator door opening device in this invention;

[0035] Figure 4 This is an exploded view of part of the structure of the refrigerator door opening device in this invention;

[0036] Figure 5 This is a three-dimensional structural diagram of the power component inside the door opening device of the present invention.

[0037] Figure 6 This is a side view of the power component inside the door opening device in this invention;

[0038] Figure 7 This is a three-dimensional structural diagram of the tooth-deficient gear inside the power component in this invention;

[0039] Figure 8 This is a partial top view of the refrigerator door when it is closed.

[0040] Figure 9 This is a simplified diagram illustrating the force analysis during the opening of a refrigerator door, as per the present invention.

[0041] Explanation of reference numerals in the attached figures:

[0042] 1. Refrigerator;

[0043] 11. Refrigerator body; 12. Door;

[0044] 3. Door opening mechanism;

[0045] 31. Push plate;

[0046] 311. Slide groove; 312. Opening; 313. Stop block; 315. Rack;

[0047] 32. Elastic unit;

[0048] 33. Jacking section;

[0049] 331. First limiting rod; 332. Second limiting block; 333. Top rod; 334. Boss;

[0050] 34. Reset unit;

[0051] 35. Base plate;

[0052] 36. Dynamic components;

[0053] 361. Electric motor;

[0054] 362. Worm gear;

[0055] 363. Worm gear;

[0056] 364. First transmission gear;

[0057] 365. Second transmission gear;

[0058] 366. Transition gear;

[0059] 367. Gear with missing tooth; 3671. Base circle; 3672. Tooth profile; 36721. First missing tooth; 36722. Second missing tooth; 3673. Drive tooth.

Detailed Implementation Methods

[0060] The invention will now be described in further detail with reference to the accompanying drawings, which will make the foregoing and other objects, features, aspects, and advantages of the invention more apparent, enabling those skilled in the art to practice it upon referring to the text of the specification. In the drawings, shapes and dimensions are enlarged for clarity, and the same reference numerals are used throughout the figures to indicate the same or similar parts. In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, etc., are used based on the orientation or positional relationship shown in the drawings. In particular, “height” corresponds to the dimension from top to bottom, “width” corresponds to the dimension from left to right, and “depth” corresponds to the dimension from front to back. These relative terms are for ease of explanation and are not generally intended to require a specific orientation. Terms relating to attachment, connection, etc. (e.g., “connection” and “attachment”) refer to the relationship in which these structures are directly or indirectly fixed or attached to each other by an intermediate structure, and to movable or rigid attachments or relationships, unless otherwise explicitly stated.

[0061] Next, the present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. It should be understood that terms such as "having," "comprising," and "including" as used herein do not imply the presence or addition of one or more other elements or combinations thereof.

[0062] like Figure 1-3 As shown, the present invention relates to an automatic door refrigerator, comprising: a refrigerator body 11 and two doors 12, wherein the refrigerator body 11 and the doors 12 are connected by an adsorption force; the automatic door refrigerator also includes a door opening device 3, which includes: a push plate 31 on which a push part 33 for pushing the doors 12 is slidably connected; and a power component 36 for driving the push plate 31, which drives the push plate 31 to move along a straight line under the drive of the power component 36.

[0063] Among them, an elastic unit 32 is connected between the push plate 31 and the push part 33. The power component 36 drives the push plate 31 to move relative to the push part 33, causing the elastic unit 32 to deform to form a pushing force for the push box door 12.

[0064] The two push-out parts 33 each overcome different adsorption forces on the box door 12;

[0065] The power component 36 and the push plate 31 are driven by a gear and rack. The power component 36 has a toothed gear 367 inside. The toothed gear 367 has at least two discontinuous toothed portions 3672 arranged circumferentially, and the two toothed portions 3672 have different numbers of teeth.

[0066] When the toothed part 3672 with fewer teeth engages in transmission, the pushing force on the corresponding short-armed pushing part 33 is insufficient to overcome the adsorption force between the refrigerator body 11 and the door 12, and the door 12 remains closed. By overcoming the different adsorption forces between the refrigerator body 11 and the door 12 through the two pushing parts 33, the pushing force provided by a single toothed part 3672 during the pushing operation can be matched with different adsorption forces, so as to realize the switching between opening a single door 12 or opening both doors 12.

[0067] Specifically, refer to Figure 8 , 9 The diagram details how the two pushing parts 33 push the box door 12 at different positions, resulting in different lever arms. Specifically, the distances between the positions of the two pushing parts 33 abutting the box door 12 and the pivot axis of the box door 12 are L1 and L2, respectively, where L1 is greater than L2. The magnitude of the pushing force is related to the distance from the position of the pushing part 33 abutting the box door 12 to the pivot axis O of the box door 12. The pushing parts 33 push the box door 12 at positions p1 and p2, respectively. The pushing force required at p1 is less than that at p2, i.e., the required pushing force F1 is less than that at p2. The number of teeth is less than F2; when the toothed part 3672 with fewer teeth drives the push plate 31 to move so that the elastic unit 32 deforms and stores the pushing power, the pushing power stored by the elastic unit 32 is between F1 and F2, and the pushing part 33 abuts against the door 12 at position p1 and is pushed open; when the toothed part 3672 with more teeth drives the push plate 31 to move so that the elastic unit 32 deforms and stores the pushing power, the pushing power stored by the elastic unit 32 is not less than F2, so as to push open the two door 12.

[0068] In a preferred embodiment, a rack 315 is mounted on one side of the push plate 31. The rack 315 is engaged or disengaged from the toothed gear 367, thereby enabling the power component 36 to transmit power to the push plate 31 intermittently.

[0069] When the elastic force generated by the deformation of the elastic unit 32 is insufficient to overcome the adsorption force, the relative position between the push plate 31 and the push part 33 gradually increases, thereby increasing the degree of deformation of the elastic unit 32. When the elastic force accumulated by the elastic unit 32 is greater than the adsorption force, the push part 33 pushes open the door 12 and then the elastic unit 32 returns to its original position. Through the flexible characteristics provided by the elastic unit 32 to the push part 33, the degree of deformation of the elastic unit 32 gradually increases to increase the time for the elastic force to overcome the adsorption force, which is used as a delayed opening time to allow the user preparation time. At the same time, because the push force is provided by the deformation of the elastic unit 32, the elastic force formed by the deformation of the elastic unit 32 is equal to or slightly greater than the adsorption force (specifically, from equal to the adsorption force to greater than the adsorption force).

[0070] In actual use, the adsorption force between the appliance's upper door 12 and the cabinet will change with the usage time. Generally speaking, the longer the usage time, the weaker the adsorption force. In order to ensure that the opening action is normal, the existing fixed pushing force door opening device is often designed to exceed its predetermined adsorption force. Compared with the fixed pushing force, the elastic force formed in the pushing mechanism can adapt to the adsorption force to improve the safety during the opening process.

[0071] This opening and closing mechanism is also applicable to scenarios where there are obstacles in front of the appliance that restrict the opening of the door 12. Since the push part 33 is flexible, the elastic unit 32 can drive the toothed gear 367 through continuous deformation. When the toothed gear 367 and the rack 315 switch from the meshing state to the disengaged state, the elastic unit 32 recovers, thereby ensuring that the internal components of the opening and closing device are not damaged, thus playing the role of overload protection.

[0072] Furthermore, such as Figure 7 As shown, the toothed portion 3672 includes a first missing tooth 36721 and a second missing tooth 36722, wherein the number of teeth on the first missing tooth 36721 is greater than the number of teeth on the second missing tooth 36722.

[0073] Specifically, when the second missing tooth 36722 is engaged with the rack 315, the corresponding pushing part 33 with the lever arm length pushes open the box door 12;

[0074] When the first missing tooth 36721 is engaged with the rack 315, the two push parts 33 push open their respective corresponding door 12.

[0075] In a preferred embodiment, the door opening device 3 further includes a base plate 35 for receiving components inside the door opening device. The base plate 35 is installed on the top of the refrigerator body 11, and the push part 33 extends out of the base plate 35 and abuts against the door 12.

[0076] Furthermore, a reset unit 34 is connected between the base plate 35 and the push plate 31;

[0077] When the toothed portion 3672 and the rack 315 are engaged, the push plate 31 moves to cause the reset unit 34 to elastically deform; when the toothed portion 3672 and the rack 315 are disengaged, the reset unit 34 returns to its original state to cause the push plate 31 to reset.

[0078] The same surface of the base plate 35 is provided with mounting positions for the push plate 31 and the power component 36. A reset unit 34 is connected between a fixed base surface of the base plate 35 and the push plate 31. When the toothed part 3672 and the rack 315 are in the meshing state, the push plate 31 moves to make the reset unit 34 elastically deform. When the toothed part 3672 and the rack 315 are in the disengaged state, the reset unit 34 recovers from the deformed state, thereby driving the push plate 31 back to the initial position.

[0079] In a preferred embodiment, such as Figure 4 As shown, the pusher 33 includes a limiting module located in the slide groove. One end of the limiting module is equipped with a push rod 333, which extends out of the push plate 31. The limiting module includes a first limiting rod 331 and a second limiting block 332. The first limiting rod 331 and the second limiting block 332 are integrally formed to form an L-shaped limiting module.

[0080] A stop 313 is provided inside the opening 312 to partially cover the opening 312, thereby forming a first slide groove and a second slide groove in the slide groove 311. A second limiting block 332 is received in the first slide groove 311, and the corresponding two sides of the second limiting block 332 abut against the inner wall of the first slide groove 311. The push rod 333 extends out from the second slide groove 312. Specifically, the stop 313 is provided inside the opening, so that the width of the first slide groove is greater than the width of the second slide groove. When the push part 33 moves relative to the push plate 31, the second limiting block 332 is restricted by the stop 313. When the slider 322 moves relative to the stop 313, the push part 33 and the push plate 31 remain relatively stationary. In this state, when the push plate 31 drives the push part 33 to move in the opposite direction, the push end of the push part 33 extends out from the second slide groove.

[0081] The main structure of the push part 33 is limited in sliding direction by the second slide groove. The other end of the push part 33 extends outward relative to the push end to form a second limiting block 332. The first slide groove 311 restricts the sliding direction of the second limiting block 332. The first limiting rod 331 extends out from the opening, and the push rod 333 is provided on the first limiting rod 331.

[0082] The stop block 313 corresponds to the second limiting block 332. When the push part 33 slides relative to the push plate 31, the stop block 313 is located on the movement path of the second limiting block 332.

[0083] The elastic unit 32 is housed in the slide groove 311. The elastic unit 32 is connected to the stop block 313 and the second limiting block 332 respectively. Specifically, the stop block 313 and the second limiting block 332 are provided with mounting ports for the elastic unit 32. The elastic unit 32 is fixedly installed in the mounting port, so that the push plate 31 is connected to the push part 33.

[0084] Furthermore, the positional relationship between the pusher 33 and the slide 311 is limited by a positioning block;

[0085] The positioning block is installed on the push part 33 and / or the slide 311. The width of the positioning block decreases from the installation side to the other side and a limiting edge is formed at its end. The limiting edge abuts against the inner wall of the slide 311 and / or the side wall of the push part 33. By reducing the contact area, the sliding friction is reduced.

[0086] One end of the push rod 333 extends outward to form a boss 334, which fits against the door 12. By increasing the contact area between the push part 33 and the door 12, the pressure is reduced to protect the door 12. Due to the large suction force, the push rod 333 requires a large pushing force when pushing the door 12. When the contact area of ​​the push rod 333 is small, the door 12 is easily damaged.

[0087] In a preferred embodiment, such as Figure 5 , 6 As shown, the power component 36 includes a motor 361 and a power transmission assembly disposed on the power output end of the motor 361; specifically, the power transmission assembly includes several transmission parts and a toothed gear 367, which is connected to the transmission parts in a transmission manner.

[0088] The transmission unit includes two gears arranged vertically with different numbers of teeth. The gears of the transmission unit are arranged in any two of the three layers in a three-layer structure. The three-layer structure is divided into three layers A, B, and C from top to bottom. The gears of the two transmission units that need to mesh are arranged in the same layer, while the gears that do not need to mesh are arranged in two separate layers to form a staggered structure, so as to avoid interference between the gears. At the same time, the staggered arrangement can reduce the footprint of the drive component, thereby reducing the volume of the door opening device.

[0089] The toothed gear 367 is provided with a drive tooth 3673, which meshes with the gear in the transmission part. The motor 361 drives the toothed gear 367. The pusher 315 is provided with a rack 315 that meshes with the toothed gear 367. The motor 361 drives the toothed gear 367 to rotate. The rack and the toothed gear 367 are in a meshing or disengaging state, thereby causing the push plate 31 to move intermittently, so that the drive assembly can automatically drive the push plate 31 to push the pusher 33 to push the box door 12.

[0090] In a preferred embodiment, the motor 361 and the transmission unit are connected by a worm gear transmission. A worm 362 is installed on the power output end of the motor 361, and the worm wheel 363 meshes with the worm 362.

[0091] The transmission unit includes a first transmission gear 364 and a second gear 365. A first output gear is provided on the worm gear 363. The first output gear meshes with the first transmission gear 364. The worm gear 363 and the first output gear are integrated into one piece.

[0092] Furthermore, the first transmission gear 364 includes a first gear and a second output gear that mesh with the first output gear. The first gear and the second output gear are integrally formed, so that the first gear and the second output gear in the first transmission gear 364 rotate together.

[0093] Furthermore, the second gear 365 includes a second gear that is meshed with the second output gear.

[0094] Specifically, the first output gear and the first gear are located in layer C; the worm gear 363 is located in layer B; and the second gear and the second output gear are located in layer A.

[0095] The transmission unit also includes a transition gear 366, and the second gear 365 also includes a third output gear disposed on the second gear, through which the drive gear 3673 is connected to the third output gear.

[0096] Transition gear 366 includes a fourth output gear and a third gear arranged vertically, with the fourth output gear and the third gear being integrated into one piece;

[0097] The third gear meshes with the third output gear, and the fourth output gear meshes with the drive gear 3673. Through the meshing of gears in the drive assembly, and the different number of teeth between the meshing gears, the rotational speed output by the motor 361 is greater than the rotational speed of the toothless gear 367, thereby increasing the torque.

[0098] The third output gear and the third gear are located in level C; the fourth output gear and drive gear 3673 are located in level B; the toothless gear 367 is located in level A.

[0099] A connecting part is provided between the first transmission gear 364 and the second gear 365, and this connecting part is located within layer B.

[0100] The gears on the first transmission gear 364 and the second gear 365 are located within layers A and C, respectively. A connecting block is provided between the two gears, and the two gears are integrated to form the first transmission gear 364 and the second gear 365 through the connecting block.

[0101] It should be understood that the above embodiments are merely illustrative examples of this application and are not intended to limit the scope of this application.

[0102] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

Claims

1. An automatic door refrigerator, comprising: The refrigerator body and two doors are connected by an adhesive force; characterized in that it further includes a door opening device, which includes: A push plate, on which a push-pull part for pushing the box door is slidably connected; and The power component that drives the push plate; The push plate and the push part are connected by an elastic unit. The power component drives the push plate to move relative to the push part, so that the elastic unit deforms and provides a pushing force to push the box door. The two pushing parts overcome different adsorption forces on their respective corresponding cabinet doors as the required opening force, and the power component provides at least two different pushing forces to adapt to the different opening forces of the two cabinet doors; When the power component provides a small pushing force, the opening force of one of the boxes matches the pushing force, and the box door is pushed open; while the opening force of the other box door is greater than the pushing force, and the box door remains closed; the power component and the push plate are connected by a gear and rack transmission, the power component has a toothed gear built in, the toothed gear has at least two discontinuous toothed sections arranged circumferentially, and the two toothed sections have different numbers of teeth; a rack is installed on one side of the push plate, the rack is in a meshing or disengaging state with the toothed gear, thereby enabling intermittent transmission between the power component and the push plate; The pushers push against different positions of the box door, so that the pushers overcome different suction forces on the box door. The toothed portion includes a first missing tooth and a second missing tooth, wherein the number of teeth in the first missing tooth is greater than the number of teeth in the second missing tooth; When the second missing tooth is engaged with the rack, the box door with a smaller suction force is pushed open by the corresponding push part. When the first missing tooth is engaged with the rack, the two pushing parts will open their respective door openings; The push plate has two parallel sliding grooves, which extend to at least one end face of the push plate and form an opening at the end face of the push plate; The pusher is located in the groove and extends out from the opening, and the elastic unit is housed in the groove.

2. The automatic door refrigerator as described in claim 1, characterized in that, The door opening device also includes a base plate, which is used to support the components inside the door opening device; The base plate is installed on the top of the refrigerator body, and the push-out part extends out of the base plate and abuts against the door.

3. The automatic door refrigerator as described in claim 2, characterized in that, A reset unit is connected between the base plate and the push plate; When the toothed part and the rack are in a meshing state, the push plate moves to drive the reset unit to elastically deform; When the toothed portion is disengaged from the rack, the reset unit resumes operation to reset the push plate.

4. The automatic door refrigerator as described in claim 3, characterized in that, A stop is provided inside the opening; The pushing part includes a second limiting block and a first limiting rod extending outward from the side of the second limiting block, the second limiting block and the first limiting rod forming an L-shaped structure; The second limiting block is located in the groove, and the first limiting rod extends out from the opening, restricting the second limiting block from sliding out of the opening by the stop block.

5. The automatic door refrigerator as described in claim 4, characterized in that, The elastic unit is connected to the stop block and the second limiting block respectively.

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