Refrigerator one-push-two automatic door opening device

Abstract

The utility model belongs to the technical field of refrigerators, and particularly relates to a refrigerator one-push-two automatic door opening device which comprises a cross-shaped side-by-side combination refrigerator, and a refrigerating chamber right door and a refrigerating chamber left door which are symmetrically arranged are hinged to one face of the cross-shaped side-by-side combination refrigerator. A right door opening switch is arranged on the refrigerating chamber right door, a left door opening switch is arranged on the refrigerating chamber left door, and a door opening mechanism device for opening the refrigerating chamber right door and the refrigerating chamber left door is arranged at the top of the cross-shaped side-by-side combination refrigerator. By means of the designed door opening mechanism device, a user does not need to open a door with force manually, using is more convenient and faster, meanwhile, single motor driving is adopted, high integration of pushing the door through the left push rod and the right push rod and rotating door opening is achieved through linkage, and compared with a traditional structure, the integration degree is high, and the layout occupied space is small. Due to the integrated design and the injection molding process adopted by part of parts, the cost can be greatly reduced while the reliability is ensured, and the technology can be popularized and popularized easily.

Description

Technical Field

[0001] This utility model belongs to the field of refrigerator technology, specifically a refrigerator one-push-two-automatic-door-opening device. Background Technology

[0002] A refrigerator is a container with a certain volume that provides low-temperature conditions to preserve food. A household refrigerator is a refrigeration and freezing appliance designed for home use, with an appropriate volume and one or more compartments; it achieves low temperatures and provides storage space through changes in the physical state of the refrigerant; and it uses electrical energy to achieve continuous cooling.

[0003] Existing refrigerators have some inconveniences. For example, the heavy door, internal negative pressure, and the suction force of the door seal, along with the typically locking mechanism at the hinges, make opening the door quite difficult. This is especially inconvenient for users carrying items in both hands. Furthermore, with rising consumer expectations, people's expectations for refrigerators have moved beyond simple storage and durability; smart and convenient features have become crucial. Therefore, there is a need for refrigerators with semi-automatic door opening via touch or pressure, automatically opening to the desired angle to improve the user experience.

[0004] Therefore, this utility model provides a refrigerator door opening device with one push and two openings. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The refrigerator one-push-two-opening automatic door device of this utility model includes a cross-door refrigerator, one side of which is hinged with a symmetrically arranged right door and left door of the refrigerator compartment; a right door switch is provided on the right door of the refrigerator compartment, and a left door switch is provided on the left door of the refrigerator compartment; the top of the cross-door refrigerator is provided with an opening mechanism for opening the right door and the left door of the refrigerator compartment; the opening mechanism includes a lower cover fixedly installed on the cross-door refrigerator, the top of which is attached to an upper cover by screws, a motor fixedly installed inside the lower cover, and a worm gear assembly fixedly installed at the output end of the motor. A left microswitch and a right microswitch are fixedly installed inside the lower cover. Rotating left and right transmission drive gears, a reversing gear, a secondary reduction gear, a primary reduction gear, and a worm gear are mounted inside the lower cover via several shafts. The worm gear assembly and the worm wheel are also present. The secondary reduction gear meshes with the primary reduction gear and the reversing gear. A symmetrically arranged left and right transmission reversing push rod is slidably connected inside the lower cover. The left transmission drive gear meshes with the left transmission reversing push rod, and the right transmission drive gear meshes with the right transmission reversing push rod. A left and right push rod are slidably connected inside the lower cover. The left transmission drive gear meshes with the left push rod, and the right transmission drive gear meshes with the right push rod.

[0007] Furthermore, the reversing gear is a double-layer gear, with a quarter tooth as the top tooth and a standard tooth as the middle tooth. The middle tooth of the reversing gear meshes with the secondary reduction gear, and the top tooth of the reversing gear meshes with the left and right gear shifting push rods.

[0008] Furthermore, the sides of the left and right gear shift push rods that are close to each other are standard spur teeth, while the sides of the left and right gear shift push rods that are far from each other are helical teeth.

[0009] Furthermore, the left and right transmission drive gears have a double-layer structure, the top teeth of the left and right transmission drive gears are nautilus-shaped, the top teeth of the left and right transmission drive gears are variable-diameter gears, and the bottom teeth of the left and right transmission drive gears mesh with the left and right transmission reversing push rods, respectively.

[0010] Furthermore, the sides of the left and right gear shift push rods that are close to each other are designed in a stepped manner, and the racks of the left and right gear shift push rods are designed in a half-rack configuration.

[0011] Furthermore, the left push rod and the right push rod are respectively provided with bosses for pressing the left micro switch and the right micro switch.

[0012] Furthermore, the ends of the left push rod and the right push rod furthest from the lower cover are respectively fixedly equipped with a left rubber end and a right rubber end.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. The automatic door opening device for refrigerators described in this utility model allows users to open the left door of a French door refrigerator by touching the left door switch. The motor rotates counter-clockwise, passing through a worm gear assembly, worm wheel, first-stage reduction gear, second-stage reduction gear, reversing gear, and left-shifting reversing push rod. The left-shifting drive gear then drives the left push rod forward a certain distance, fully opening the left door of the refrigerator compartment. Touching the right door switch opens the right door of the refrigerator compartment. This door opening mechanism eliminates the need for manual force, making it more convenient and faster to use. It utilizes a single motor drive, achieving a high degree of integration between the left and right push rods for pushing and rotating the door. Compared to traditional structures, it boasts high integration and a smaller footprint. Furthermore, the integrated design and the use of injection molding for some parts ensure reliability while significantly reducing costs, facilitating the promotion and widespread adoption of this technology. Moreover, the mechanism is compatible with traditional single-axis hinges, double-axis hinges, and multi-link hinges, making it widely applicable to various French door, French door, and side-by-side refrigerators. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the main structure of the cross-door refrigerator of this utility model;

[0017] Figure 2 This is a side view of the cross-door refrigerator of this utility model;

[0018] Figure 3 This is an exploded structural diagram of the door opening mechanism device in this utility model;

[0019] Figure 4 This is a top view of the motor structure in this utility model;

[0020] Figure 5 This is a structural schematic diagram of the right-opening door configuration in this utility model;

[0021] Figure 6 This is a structural schematic diagram of the left-opening door configuration in this utility model;

[0022] Figure 7 This is a schematic diagram of the structure of the two-stage reduction gear in this utility model;

[0023] Figure 8 This is a schematic diagram of the reversing gear in this utility model;

[0024] Figure 9 This is a schematic diagram of the forward rotation of the worm gear in this utility model;

[0025] Figure 10 This is a schematic diagram of the reverse rotation of the worm gear in this utility model;

[0026] Figure 11 This is a speed curve diagram of the push rod in this utility model;

[0027] Figure 12 This is a thrust curve diagram of the push rod in this utility model.

[0028] In the diagram: 1. French door refrigerator; 2. Right door of the refrigerator compartment; 3. Left door of the refrigerator compartment; 4. Right door switch; 5. Left door switch; 6. Door opening mechanism; 7a. Left rubber end; 7b. Right rubber end; 8a. Left push rod; 8b. Right push rod; 9a. Left gear drive gear; 9b. Right gear drive gear; 10a. Left gear reversing push rod; 10b. Right gear reversing push rod; 11. Reversing gear; 12. Secondary reduction gear; 13. Primary reduction gear; 14. Worm gear; 15. Worm gear assembly; 16. Motor; 17. Left micro switch; 18. Right micro switch; 19. Top cover; 20. Bottom cover. Detailed Implementation

[0029] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0030] like Figures 1 to 12As shown in the embodiment of this utility model, the refrigerator one-push-two-open automatic door device includes a cross-door refrigerator 1. One side of the cross-door refrigerator 1 is hinged with a symmetrically arranged right refrigerator door 2 and left refrigerator door 3. A right-opening switch 4 is provided on the right refrigerator door 2, and a left-opening switch 5 is provided on the left refrigerator door 3. An opening mechanism 6 for opening the right refrigerator door 2 and the left refrigerator door 3 is provided on the top of the cross-door refrigerator 1. The opening mechanism 6 includes a lower cover 20 fixedly installed on the cross-door refrigerator 1. An upper cover 19 is attached to the top of the lower cover 20 by screws. A motor 16 is fixedly installed inside the lower cover 20. A worm gear assembly 15 is fixedly installed at the output end of the motor 16. A left micro switch 17 and a right micro switch 18 are fixedly installed inside the lower cover 20. The lower cover 20 contains a rotating left transmission drive gear 9a, a right transmission drive gear 9b, a reversing gear 11, a secondary reduction gear 12, a primary reduction gear 13, and a worm gear 14 mounted on several shafts. The worm assembly 15 and the worm wheel 14 are also present. The secondary reduction gear 12 meshes with the primary reduction gear 13 and the reversing gear 11. A left transmission reversing push rod 10a and a right transmission reversing push rod 10b are slidably connected within the lower cover 20. The left transmission drive gear 9a meshes with the left transmission reversing push rod 10a, and the right transmission drive gear 9b meshes with the right transmission reversing push rod 10b. A left push rod 8a and a right push rod 8b are slidably connected within the lower cover 20. The left transmission drive gear 9a meshes with the left push rod 8a, and the right transmission drive gear 9b meshes with the right push rod 8b.

[0031] Specifically, the reversing gear 11 is a double-layer gear with a quarter-tooth top tooth and a standard gear middle tooth. The middle tooth of the reversing gear 11 meshes with the secondary reduction gear 12, and the top tooth of the reversing gear 11 meshes with the left and right shift reversing push rods 10a and 10b. The sides of the left and right shift reversing push rods 10a and 10b that are close to each other are standard spur teeth, and the sides of the left and right shift reversing push rods 10a and 10b that are far from each other are helical teeth. The left transmission drive gear 9a and the right transmission drive gear 9b have a double-layer structure. The top teeth of the left transmission drive gear 9a and the right transmission drive gear 9b are nautilus-shaped, and the top teeth of the left transmission drive gear 9a and the right transmission drive gear 9b are variable diameter gears. The bottom teeth of the left transmission drive gear 9a and the right transmission drive gear 9b mesh with the left transmission reversing push rod 10a and the right transmission reversing push rod 10b, respectively.

[0032] Specifically, the left and right gear shifting push rods 10a and 10b have a stepped design on their sides that are close to each other. The racks of the left and right gear shifting push rods 10a and 10b are designed in a half-rack configuration. The left and right push rods 8a and 8b are respectively provided with protrusions that press against the left micro switch 17 and the right micro switch 18. The left and right push rods 8a and 8b are respectively fixedly mounted with a left rubber end 7a and a right rubber end 7b at the ends of the left and right push rods 8a and 8b away from the lower cover 20.

[0033] When in operation, touching the left door switch 5 on the French door refrigerator 1 causes the motor 16 to rotate counterclockwise. This rotation passes through the worm gear assembly 15, worm wheel 14, first-stage reduction gear 13, second-stage reduction gear 12, reversing gear 11, and left speed-changing push rod 10a. The left speed-changing drive gear 9a then drives the left push rod 8a forward a short distance, fully opening the left door 3 of the refrigerator compartment. The protrusion at the left push rod 8a presses the left micro switch 17, disconnecting the circuit and stopping operation. After a period of time, the motor 16 reverses direction, the left push rod 8a retracts, and the left door 3 of the refrigerator compartment 1 closes again. Touching the right door switch 4 on the French door refrigerator 1 causes the motor 16 to rotate clockwise. This rotation passes through the worm gear assembly 15, worm wheel 14, and other components. The right speed-changing drive gear 9b then drives the right push rod 8b forward a short distance, fully opening the right door 2 of the refrigerator compartment. The protrusion at the right push rod 8b presses the right micro switch 18, disconnecting the circuit and stopping operation. After a period of time, motor 16 reverses, right push rod 8b retracts, and then closes the left door 3 of the refrigerator compartment of the French door refrigerator 1 again. Due to the negative pressure inside the French door refrigerator 1, the door opening mechanism 6 has the function of changing the pushing force and speed during the opening process.

[0034] It should be noted that motor 16 is a rotary motor 16, specifically a DC brushed motor 16. The rotation direction switching of motor 16 between forward and reverse directions is achieved by reversing the polarity of the voltage applied to the terminals. Regarding the rotation direction of the worm gear assembly 15, in... Figure 9 In the diagram, the arrow indicates the forward rotation direction of the worm gear assembly 15 and the worm wheel 14. When viewed from the front end of the worm gear assembly 15, if the motor 16 rotates clockwise, the rotation direction of this device is the forward direction. Figure 10 In the diagram, the arrow indicates that the worm gear assembly 15 is rotated in the opposite direction by reversing the polarity of the voltage applied to the motor 16. The rotation direction of this device is the reverse direction.

[0035] The door opening mechanism 6 designed in this application eliminates the need for manual force to open the door, making it more convenient and faster to use. It utilizes a single motor 16 for drive, achieving a high degree of integration between the left push rod 8a and the right push rod 8b for pushing the door open and the rotating door opening mechanism. Compared to traditional structures, this design offers higher integration and a smaller footprint. Furthermore, the integrated design and the use of injection molding for some components ensure reliability while significantly reducing costs, facilitating the promotion and widespread adoption of this technology. Moreover, the mechanism designed in this application is compatible with traditional single-axis hinges, dual-axis hinges, and multi-link hinges, making it widely applicable to various French door, French door, and side-by-side refrigerators.

[0036] Working principle: Touching the left door switch 5 on the top of the French door refrigerator 1 causes the motor 16 to rotate counterclockwise. This rotation passes through the worm gear assembly 15, worm wheel 14, first-stage reduction gear 13, second-stage reduction gear 12, reversing gear 11, and left speed-changing push rod 10a. The left speed-changing drive gear 9a drives the left push rod 8a forward a short distance, fully opening the left door 3 of the refrigerator compartment. The protrusion at the left push rod 8a presses the left micro switch 17, disconnecting the circuit and stopping operation. After a period of time, the motor 16 reverses direction, the left push rod 8a retracts, and the left door 3 of the refrigerator compartment 1 closes again. Touching the right door switch 4 on the top of the French door refrigerator 1 causes the motor 16 to rotate clockwise. This rotation passes through the worm gear assembly 15, worm wheel 14, and other components. The right speed-changing drive gear 9b drives the right push rod 8b forward a short distance, fully opening the right door 2 of the refrigerator compartment. The protrusion at the right push rod 8b presses the right micro switch 18, disconnecting the circuit and stopping operation. After a period of time, motor 16 reverses, right push rod 8b retracts, and then closes the left door 3 of the refrigerator compartment of the French door refrigerator 1 again.

[0037] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0038] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A refrigerator push-to-open automatic door opening device, comprising a cross-opening door refrigerator (1), one side of the cross-opening door refrigerator (1) being hingedly connected with symmetrically arranged refrigeration chamber right door (2) and refrigeration chamber left door (3); characterized in that: The right door (2) of the refrigerator is provided with a right door opening switch (4), the left door (3) of the refrigerator is provided with a left door opening switch (5), and the top of the cross-opening door refrigerator (1) is provided with a door opening mechanism device (6) for opening the right door (2) and the left door (3) of the refrigerator. The door opening mechanism device (6) comprises a lower cover (20) fixedly installed on the cross-opening door refrigerator (1), the top of the lower cover (20) is locked with an upper cover (19) through a screw, a motor (16) is fixedly installed in the lower cover (20), the output end of the motor (16) is fixedly installed with a worm assembly (15), and the lower cover (20) is fixedly installed with a left micro switch (17) and a right micro switch (18). The lower cover (20) is installed with rotating left variable speed drive gears (9a), right variable speed drive gears (9b), reversing gears (11), secondary reduction gears (12), primary reduction gears (13) and worm gears (14) through a plurality of shafts, the worm assembly (15) and the turbine worm gear (14), the secondary reduction gear (12) is engaged with the primary reduction gear (13) and the reversing gear (11), the lower cover (20) is slidably connected with symmetrically arranged left variable speed reversing push rods (10a) and right variable speed reversing push rods (10b), the left variable speed drive gear (9a) is engaged with the left variable speed reversing push rod (10a), the right variable speed drive gear (9b) is engaged with the right variable speed reversing push rod (10b), the lower cover (20) is slidably connected with a left push rod (8a) and a right push rod (8b), the left variable speed drive gear (9a) is engaged with the left push rod (8a), and the right variable speed drive gear (9b) is engaged with the right push rod (8b).

2. The automatic door opening device of claim 1, wherein: The reversing gear (11) is a double-layer gear, the top teeth are one-fourth teeth, and the middle teeth are standard gears, the middle teeth of the reversing gear (11) are engaged with the secondary reduction gear (12), and the top teeth of the reversing gear (11) are engaged with the left variable speed reversing push rod (10a) and the right variable speed reversing push rod (10b).

3. The automatic door opening device of claim 1, wherein: The left variable speed reversing push rod (10a) and the right variable speed reversing push rod (10b) are standard spur gears on the side close to each other, and are helical gears on the side away from each other.

4. The automatic door opening device of claim 1, wherein: The left variable speed drive gear (9a) and the right variable speed drive gear (9b) are double-layer structures, the top teeth of the left variable speed drive gear (9a) and the right variable speed drive gear (9b) are nautiluses, the top teeth of the left variable speed drive gear (9a) and the right variable speed drive gear (9b) are variable-diameter gears, and the bottom teeth of the left variable speed drive gear (9a) and the right variable speed drive gear (9b) are engaged with the left variable speed reversing push rod (10a) and the right variable speed reversing push rod (10b) respectively.

5. The automatic door opening device of claim 1, wherein: The left variable speed reversing push rod (10a) and the right variable speed reversing push rod (10b) are designed in a stepped manner on the side close to each other, and the rack of the left variable speed reversing push rod (10a) and the right variable speed reversing push rod (10b) is designed in a one-half manner.

6. The automatic door opening device of claim 1, wherein: The left push rod (8a) and the right push rod (8b) are respectively provided with bosses for pressing the left micro switch (17) and the right micro switch (18).

7. The automatic door opening device of claim 1, wherein: The left push rod (8a) and the right push rod (8b) are respectively provided with bosses for pressing the left micro switch (17) and the right micro switch (18).

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