Refrigerator one-push-two automatic door opening device

Abstract

The invention 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. Through 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] The invention belongs to the technical field of refrigerators, in particular to a one-push-two automatic door opening device for a refrigerator. Background Art

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

[0003] Existing refrigerators have some inconveniences in use. For example, because the refrigerator door is heavy, there is negative pressure inside, the door seal has suction force, and a locking structure is usually set at the hinge, it is more difficult to open the door. For users who hold items in both hands, it is very inconvenient to manually open the refrigerator door. At the same time, with the upgrading of consumption, people's expectations for refrigerator products are no longer limited to traditional functions such as simple storage and durability. Intelligent and convenient have become important needs. Therefore, it is necessary to achieve semi-automatic door opening of refrigerators by touch and press, and automatically open to the required angle to improve user experience.

[0004] To this end, the present invention provides a one-push-two automatic door opening device for a refrigerator. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve its technical problem is: the refrigerator one-push two automatic door opening device described in the present invention comprises a cross-door refrigerator, one side of the cross-door refrigerator is hinged with a symmetrically arranged right door and left door of the refrigerator chamber; the right door of the refrigerator chamber is provided with a right door opening switch, the left door of the refrigerator chamber is provided with a left door opening switch, and the top of the cross-door refrigerator is provided with an opening mechanism device for opening the right door of the refrigerator chamber and the left door of the refrigerator chamber; the door opening mechanism device comprises a lower cover fixedly installed on the cross-door refrigerator, the top of the lower cover is attached to the upper cover by screws, a motor is fixedly installed in the lower cover, a worm assembly is fixedly installed at the output end of the motor, and the lower cover A left microswitch and a right microswitch are fixedly installed inside; a rotating left speed change drive gear, a right speed change drive gear, a reversing gear, a secondary reduction gear, a primary reduction gear and a worm gear are installed in the lower cover through several shafts, the worm assembly and the turbine worm gear, the secondary reduction gear is meshed with the primary reduction gear and the reversing gear, a symmetrically arranged left speed change reversing push rod and a right speed change reversing push rod are slidably connected in the lower cover, the left speed change drive gear is meshed with the left speed change reversing push rod, the right speed change drive gear is meshed with the right speed change reversing push rod, a left push rod and a right push rod are slidably connected in the lower cover, the left speed change drive gear is meshed with the left push rod, and the right speed change drive gear is meshed with the right push rod.

[0007] Furthermore, the reversing gear is a double-layer gear, the top teeth are quarter teeth, and the middle teeth are standard gears. The middle teeth of the reversing gear are meshed with the secondary reduction gear, and the top teeth of the reversing gear are meshed with the left speed change reversing push rod and the right speed change reversing push rod.

[0008] Furthermore, the sides of the left speed change reversing push rod and the right speed change reversing push rod that are close to each other are standard spur teeth, and the sides of the left speed change reversing push rod and the right speed change reversing push rod that are away from each other are helical teeth.

[0009] Furthermore, the left speed change drive gear and the right speed change drive gear are double-layer structures, the top teeth of the left speed change drive gear and the right speed change drive gear are nautilus-type, the top teeth of the left speed change drive gear and the right speed change drive gear are reducing gears, and the bottom teeth of the left speed change drive gear and the right speed change drive gear are respectively meshed with the left speed change reversing push rod and the right speed change reversing push rod.

[0010] Furthermore, the sides of the left speed change reversing push rod and the right speed change reversing push rod that are close to each other are designed in a stepped manner, and the racks of the left speed change reversing push rod and the right speed change reversing push rod are designed in a half manner.

[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, a left rubber end cap and a right rubber end cap are respectively fixedly mounted on one end of the left push rod and the right push rod away from the lower cover.

[0013] The beneficial effects of the present invention are as follows:

[0014] 1. The one-push two-door automatic door opening device for refrigerators described in the present invention, by touching the left door opening switch on the cross-door refrigerator, the motor can rotate counterclockwise, passing through the worm assembly, worm wheel, primary reduction gear, secondary reduction gear, reversing gear and left speed change reversing push rod, the left speed change driving gear drives the left push rod to push forward a distance, and the left door of the refrigerator compartment is fully opened. Then touch the right door opening switch on the cross-door refrigerator to open the right door of the refrigerator compartment. Through the door opening mechanism device designed by the present application, users do not need to manually open the door with force, which is more convenient and quick to use. At the same time, a single motor drive is adopted, and the high integration of the left push rod and the right push rod to push the door and rotate the door is realized through linkage. Compared with the traditional structure, the integration is high and the layout occupies less space. In addition, the integrated design and the injection molding process of some parts can greatly reduce the cost while ensuring reliability, which is conducive to the promotion and popularization of the technology. In addition, the mechanism designed by the present application is compatible with traditional single-axis hinges, double-axis hinges and multi-link hinges, and can be widely used in various cross, French and double-door refrigerators. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 1 This is a schematic diagram of the main structure of the cross-door refrigerator of the present invention;

[0017] Figure 2 It is a side view structural schematic diagram of a cross-door refrigerator in the present invention;

[0018] Figure 3 It is a schematic diagram of the exploded structure of the door opening mechanism device in the present invention;

[0019] Figure 4 is a schematic diagram of the top view of the motor in the present invention;

[0020] Figure 5 It is a structural schematic diagram of the right door open state in the present invention;

[0021] Figure 6 It is a structural schematic diagram of the left door open state in the present invention;

[0022] Figure 7 It is a structural schematic diagram of the secondary reduction gear in the present invention;

[0023] Figure 8 It is a structural schematic diagram of the reversing gear in the present invention;

[0024] Fig. 9 It is a schematic structural diagram of the worm gear in the present invention rotating in the forward direction;

[0025] Fig.10 It is a schematic diagram of the structure of the worm gear rotating in the opposite direction in the present invention;

[0026] Fig.11 It is a speed curve diagram of the push rod in the present invention;

[0027] Fig.12 It is a thrust curve diagram of the push rod in the present invention.

[0028] In the figure: 1. cross-door refrigerator; 2. right door of refrigerator compartment; 3. left door of 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 speed-changing drive gear; 9b. right speed-changing drive gear; 10a. left speed-changing reversing push rod; 10b. right speed-changing reversing push rod; 11. reversing gear; 12. secondary reduction gear; 13. primary reduction gear; 14. worm gear; 15. worm assembly; 16. motor; 17. left micro switch; 18. right micro switch; 19. upper cover; 20. lower cover. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0030] like Figures 1 to 12As shown, the one-push-two automatic door opening device for a refrigerator according to an embodiment of the present invention comprises a cross-door refrigerator 1, one side of the cross-door refrigerator 1 is hinged with a symmetrically arranged right door 2 and left door 3 of a refrigerator compartment; a right door opening switch 4 is arranged on the right door 2 of the refrigerator compartment, and a left door opening switch 5 is arranged on the left door 3 of the refrigerator compartment, and a door opening mechanism device 6 for opening the right door 2 and the left door 3 of the refrigerator compartment is arranged on the top of the cross-door refrigerator 1; the door opening mechanism device 6 comprises a lower cover 20 fixedly mounted 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 mounted in the lower cover 20, a worm assembly 15 is fixedly mounted on the output end of the motor 16, and a left micro switch 17 and a right micro switch 18 are fixedly mounted in the lower cover 20; The lower cover 20 is provided with a rotating left speed change drive gear 9a, a right speed change drive gear 9b, a reversing gear 11, a secondary reduction gear 12, a primary reduction gear 13 and a worm gear 14 through a plurality of shafts, the worm assembly 15 and the turbine worm gear 14, the secondary reduction gear 12 is meshed with the primary reduction gear 13 and the reversing gear 11, the lower cover 20 is slidably connected with a symmetrically arranged left speed change reversing push rod 10a and a right speed change reversing push rod 10b, the left speed change drive gear 9a is meshed with the left speed change reversing push rod 10a, the right speed change drive gear 9b is meshed with the right speed change 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 speed change drive gear 9a is meshed with the left push rod 8a, and the right speed change drive gear 9b is meshed with the right push rod 8b.

[0031] Specifically, the reversing gear 11 is a double-layer gear, the top teeth are quarter teeth, and the middle teeth are standard gears. The middle teeth of the reversing gear 11 are meshed with the secondary reduction gear 12, and the top teeth of the reversing gear 11 are meshed with the left speed change reversing push rod 10a and the right speed change reversing push rod 10b. The side of the left speed change reversing push rod 10a and the right speed change reversing push rod 10b that are close to each other is a standard spur tooth, and the side of the left speed change reversing push rod 10a and the right speed change reversing push rod 10b that are away from each other is a helical tooth. The left speed change driving gear 9a and the right speed change driving gear 9b are of a double-layer structure, the top teeth of the left speed change driving gear 9a and the right speed change driving gear 9b are of a nautilus type, the top teeth of the left speed change driving gear 9a and the right speed change driving gear 9b are reducing gears, and the bottom teeth of the left speed change driving gear 9a and the right speed change driving gear 9b are respectively engaged with the left speed change reversing push rod 10a and the right speed change reversing push rod 10b.

[0032] Specifically, the sides of the left speed shift reversing push rod 10a and the right speed shift reversing push rod 10b that are close to each other are of stepped design, the racks of the left speed shift reversing push rod 10a and the right speed shift reversing push rod 10b are of half-type design, 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, and the left push rod 8a and the right push rod 8b are respectively fixedly installed with the left rubber end 7a and the right rubber end 7b at the ends away from the lower cover 20.

[0033] When working, touch the left door switch 5 on the cross-door refrigerator 1, the motor 16 can rotate counterclockwise, pass through the worm assembly 15, worm wheel 14, primary reduction gear 13, secondary reduction gear 12, reversing gear 11 and left speed change reversing push rod 10a, the left speed change driving gear 9a drives the left push rod 8a to push forward a distance, the left door 3 of the refrigerator compartment is fully opened, the boss at the left push rod 8a presses the left micro switch 17, the device circuit is disconnected, and the operation stops. After a period of time, the motor 16 reverses, the left push rod 8a is retracted, and then the left door 3 of the refrigerator compartment of the cross-door refrigerator 1 is closed again. Touch the right door switch 4 on the cross-door refrigerator 1, the motor 16 can rotate clockwise, pass through the worm assembly 15, worm wheel 14 and other parts, the right speed change driving gear 9b drives the right push rod 8b to push forward a distance, the right door 2 of the refrigerator compartment is fully opened, the boss at the right push rod 8b presses the right micro switch 18, the device circuit is disconnected, and the operation stops. After a period of time, the motor 16 reverses, the right push rod 8b is retracted, and then the left door 3 of the refrigerator compartment of the cross-door refrigerator 1 is closed again. Due to the negative pressure inside the cross-door refrigerator 1, the door opening mechanism device 6 has the function of changing the thrust and speed during the door opening process.

[0034] It should be noted that the motor 16 is a rotary motor 16, and a DC brushed motor 16 is selected. By reversing the polarity of the voltage applied to the terminal, the rotation switching of the motor 16 in the forward direction and the reverse direction is satisfied. Figure 9 In FIG. 1 , the arrow indicates the positive rotation direction of the worm assembly 15 and the worm wheel 14. When viewed from the front end side of the worm assembly 15, if the motor 16 rotates clockwise, the rotation direction of the device is the positive rotation direction. Figure 10 In FIG. 1 , the arrow indicates that the worm assembly 15 is rotated in the opposite direction by reversing the polarity of the voltage applied to the motor 16 , and the rotation direction of this device is the reverse direction.

[0035] The door opening mechanism device 6 designed by the present application does not require the user to manually open the door, which is more convenient and quick to use. At the same time, a single motor 16 is used to drive the door, and the left push rod 8a and the right push rod 8b are linked to achieve a high degree of integration of opening the door and rotating the door. Compared with the traditional structure, the integration is high and the layout occupies less space. The integrated design and the injection molding process of some parts can greatly reduce the cost while ensuring reliability, which is conducive to the promotion and popularization of the technology. Moreover, the mechanism designed by the present application is compatible with traditional single-axis hinges, double-axis hinges and multi-link hinges, and can be widely used in various cross, French and double-door refrigerators.

[0036] Working principle: Touch the left door switch 5 on the cross-door refrigerator 1, the motor 16 can rotate counterclockwise, pass through the worm assembly 15, worm wheel 14, primary reduction gear 13, secondary reduction gear 12, reversing gear 11 and left speed change reversing push rod 10a, the left speed change driving gear 9a drives the left push rod 8a to push forward a distance, the left door 3 of the refrigerator compartment is fully opened, the boss at the left push rod 8a presses the left micro switch 17, the device circuit is disconnected, and the operation stops. After a period of time, the motor 16 reverses, the left push rod 8a is retracted, and then the left door 3 of the refrigerator compartment of the cross-door refrigerator 1 is closed again. Touch the right door switch 4 on the cross-door refrigerator 1, the motor 16 can rotate clockwise, pass through the worm assembly 15, worm wheel 14 and other parts, the right speed change driving gear 9b drives the right push rod 8b to push forward a distance, the right door 2 of the refrigerator compartment is fully opened, the boss at the right push rod 8b presses the right micro switch 18, the device circuit is disconnected, and the operation stops. After a period of time, the motor 16 rotates in the reverse direction, and the right push rod 8b is retracted, thereby reclosing the left door 3 of the refrigerator compartment of the cross-door refrigerator 1.

[0037] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, 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 the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A refrigerator one-push two-door automatic opening device, comprising a cross-door refrigerator (1), wherein one side of the cross-door refrigerator (1) is hinged with a symmetrically arranged right door (2) and left door (3) of the refrigerator; characterized in that: The right door (2) of the refrigerating chamber is provided with a right door opening switch (4), the left door (3) of the refrigerating chamber is provided with a left door opening switch (5), and the top of the cross-door refrigerator (1) is provided with a door opening mechanism device (6) for opening the right door (2) of the refrigerating chamber and the left door (3) of the refrigerating chamber; The door opening mechanism device (6) comprises a lower cover (20) fixedly mounted on the cross-door refrigerator (1); the top of the lower cover (20) is attached to an upper cover (19) by screws; a motor (16) is fixedly mounted inside the lower cover (20); a worm assembly (15) is fixedly mounted at the output end of the motor (16); and a left micro switch (17) and a right micro switch (18) are fixedly mounted inside the lower cover (20); The lower cover (20) is provided with a left speed change driving gear (9a), a right speed change driving gear (9b), a reversing gear (11), a secondary reduction gear (12), a primary reduction gear (13) and a worm gear (14) through a plurality of shafts, the worm assembly (15) and the turbine worm gear (14), the secondary reduction gear (12) meshing with the primary reduction gear (13) and the reversing gear (11), and the lower cover (20) is slidably connected with a symmetrically arranged left speed change driving gear (9a), a right speed change driving gear (9b), a reversing gear (11), a secondary reduction gear (12), a primary reduction gear (13) and a worm gear (14) in a rotatable manner. The left speed change push rod (10a) and the right speed change push rod (10b) are respectively provided on the lower cover (20); the left speed change driving gear (9a) is meshed with the left speed change reversing push rod (10a); the right speed change driving gear (9b) is meshed with the right speed change reversing push rod (10b); a left push rod (8a) and a right push rod (8b) are slidably connected in the lower cover (20); the left speed change driving gear (9a) is meshed with the left push rod (8a); and the right speed change driving gear (9b) is meshed with the right push rod (8b).

2. The refrigerator one-push two-door automatic opening device according to claim 1, characterized in that: The reversing gear (11) is a double-layer gear, the top teeth are quarter teeth, and the middle teeth are standard gears. The middle teeth of the reversing gear (11) are meshed with the secondary reduction gear (12), and the top teeth of the reversing gear (11) are meshed with the left speed change reversing push rod (10a) and the right speed change reversing push rod (10b).

3. The one-push-two-door automatic opening device for refrigerator according to claim 1, characterized in that: The sides of the left speed change reversing push rod (10a) and the right speed change reversing push rod (10b) that are close to each other are standard spur teeth, and the sides of the left speed change reversing push rod (10a) and the right speed change reversing push rod (10b) that are away from each other are helical teeth.

4. The refrigerator one-push two-door automatic opening device according to claim 1, characterized in that: The left speed change driving gear (9a) and the right speed change driving gear (9b) are double-layer structures, the top teeth of the left speed change driving gear (9a) and the right speed change driving gear (9b) are nautilus-type, the top teeth of the left speed change driving gear (9a) and the right speed change driving gear (9b) are variable diameter gears, and the bottom teeth of the left speed change driving gear (9a) and the right speed change driving gear (9b) are respectively meshed with the left speed change reversing push rod (10a) and the right speed change reversing push rod (10b).

5. The one-push-two-door automatic opening device for refrigerator according to claim 1, characterized in that: The sides of the left speed change reversing push rod (10a) and the right speed change reversing push rod (10b) that are close to each other are designed in a stepped manner, and the racks of the left speed change reversing push rod (10a) and the right speed change reversing push rod (10b) are designed in a half-type manner.

6. The refrigerator one-push two-door automatic opening device according to claim 1, characterized in that: 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 refrigerator one-push two-door automatic opening device according to claim 1, characterized in that: A left rubber end head (7a) and a right rubber end head (7b) are respectively fixedly mounted on the ends of the left push rod (8a) and the right push rod (8b) away from the lower cover (20).

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