CN111042694A

CN111042694A - Automatic door opening and closing device for refrigerator and refrigerator based on same

Info

Publication number: CN111042694A
Application number: CN201911345463.0A
Authority: CN
Inventors: 张魁仓; 李乾坤; 张卫卫
Original assignee: Changhong Meiling Co Ltd
Current assignee: Changhong Meiling Co Ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-04-21

Abstract

The invention discloses an automatic door opening and closing device for a refrigerator and a refrigerator based thereon, and relates to the technical field of refrigerator devices. The invention includes a gear box, a push rod, a connecting rod, a drive device and a reducer device; the gear box includes a gear box box body and a gear box cover that are fixed by screws and cooperate with each other; the drive device, the reducer device and the connecting rod are mutually Fittedly installed in the gearbox casing; the push rod and the connecting rod are hinged. The automatic opening and closing door of the refrigerator designed by the invention is simple in structure, low in cost, simple in installation process and large in torque, and the automatic opening and closing of the refrigerator door body can be realized by using a single module.

Description

Automatic door opening and closing device for refrigerator and refrigerator based on same

Technical Field

The invention belongs to the technical field of refrigerator devices, and particularly relates to an automatic door opening and closing device of a refrigerator and the refrigerator based on the same.

Background

In the current market, most of refrigerators still open and close the door in a manual mode, and when a user holds articles by hands, the operation is very inconvenient. Some household electrical appliances manufacturers have released refrigerators that can be opened semi-automatically by touch, human body induction, voice, key and other modes, but the doors of these refrigerators cannot be opened to a required angle automatically, and have no automatic door closing function, so that the user experience is not good. The existing automatic door opening and closing scheme is mostly used in a multi-module matching mode, the cost is expensive, and the wide application is difficult to achieve.

Disclosure of Invention

The invention aims to provide an automatic door opening and closing device of a refrigerator and the refrigerator based on the same, and aims to overcome the defects in the prior art.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to an automatic door opening and closing device for a refrigerator, which comprises a gear box, a push rod, a connecting rod, a driving device and a speed reducer device, wherein the gear box is arranged on the gear box; the gearbox comprises a gearbox body and a gearbox cover which are fixed through screws and matched with each other; the driving device, the speed reducer device and the connecting rod are all arranged in the gearbox body in a mutually matched mode; the push rod is hinged with the connecting rod.

Further, the driving device is installed in a motor groove of the gearbox body; the end of the driving device is provided with a motor shaft, and a worm is sleeved on the motor shaft.

Further, the speed reducer device comprises a first gear and a second gear which are meshed with each other, the speed reducer device further comprises a worm wheel meshed with the second gear, and the worm wheel is in transmission connection with the worm; the first gear, the second gear and the worm gear are all arranged in the gearbox body through a gear shaft; and a shaft hole D for mounting a gear shaft is arranged in the gear box body.

Furthermore, a guide rail is arranged in the gearbox body and penetrates through the gearbox body and extends to the outside of the gearbox body; screw holes are respectively arranged at two ends of the guide rail; a rack structure is arranged on one side surface of the push rod, and a sliding block which can be in sliding fit along the guide rail is arranged on the bottom side surface of the push rod; the end part of the push rod is also provided with a shaft hole A, and the rack structure is meshed with the first gear.

Further, the both ends of connecting rod are equipped with a shaft hole B respectively and in shaft hole B cooperation is installed bearing B, the one end of connecting rod is articulated mutually with the one end that the push rod was equipped with shaft hole A.

Further, the driving device is a motor.

The refrigerator comprises the automatic opening and closing door device for the refrigerator, wherein the automatic opening and closing door device for the refrigerator is arranged at the top and/or the bottom of a refrigerator body.

Further, the refrigerator comprises a refrigerator body and a door body; the box body is connected with the door body through a hinge, and one end of the hinge is fixed at the top of the box body through a bolt; the other end of the hinge is provided with a rotating shaft, the top of the door body is provided with a shaft hole C matched with the rotating shaft, and a bearing C is installed between the shaft hole C and the rotating shaft in a matched mode.

Furthermore, the side of the gear box body is provided with a fixing block and bolt holes are formed in the fixing block, and the automatic refrigerator door opening and closing device is fixed on the box body through the bolt holes.

Furthermore, the end part of a connecting rod of the automatic door opening and closing device of the refrigerator is hinged on the door body; the door body is provided with a hinged shaft matched with the bearing B.

The invention has the following beneficial effects:

the automatic opening and closing door of the refrigerator designed by the invention has the advantages of simple structure, low cost, simple installation process and large torque, and the automatic opening and closing of the refrigerator door body can be realized by using a single module.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of a refrigerator according to the present invention in a closed state;

FIG. 2 is a schematic view illustrating an opened state of a refrigerator according to the present invention;

FIG. 3 is a schematic view of the internal mounting of the gearbox of the present invention;

FIG. 4 is an exploded view of an automatic door opening and closing apparatus according to the present invention;

fig. 5 is a schematic view of the structure of the push rod of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.

Referring to fig. 1-5, the present invention relates to an automatic door opening and closing device for a refrigerator, which comprises a gear box 41, a push rod 42, a connecting rod 43, a driving device 44 and a decelerator device; the gear box 41 comprises a gear box body 411 and a gear box cover 412 which are fixed through screws and matched with each other; the driving device 44, the speed reducer device and the connecting rod 43 are all arranged in the gear box body 411 in a matched mode; the push rod 42 is hinged to the link 43.

Wherein, the driving device 44 is arranged in a motor groove of the gearbox body 411; the end of the driving device 44 is provided with a motor shaft 441, and the motor shaft 441 is sleeved with a worm 451.

The reducer device comprises a first gear 453 and a second gear 454 which are meshed with each other, the reducer device further comprises a worm wheel 452 meshed with the second gear 454, and the worm wheel 452 is in transmission connection with the worm 451; the first gear 453, the second gear 454 and the worm gear 452 are all mounted in the gear case 411 through a gear shaft 46; a shaft hole D4113 for mounting the gear shaft 46 is formed in the gear box body 411.

A guide rail 4111 is arranged in the gear box body 411, and the guide rail 4111 penetrates through the gear box body 411 and extends to the outside of the gear box body 411; screw holes 4112 are respectively arranged at two ends of the guide rail 4111; a rack structure 421 is arranged on one side surface of the push rod 42, and a sliding block 422 which can be in sliding fit along the guide rail 4111 is arranged on the bottom side surface of the push rod 42; the end of the push rod 42 is further provided with a shaft hole a423, and the rack gear 421 is engaged with the first gear 453.

Wherein, both ends of the connecting rod 43 are respectively provided with a shaft hole B and are provided with a bearing B431 in the shaft hole B in a matching way, and one end of the connecting rod 43 is hinged with one end of the push rod 42 provided with the shaft hole a 423.

The driving device 44 is a motor.

The refrigerator comprises the automatic opening and closing door device for the refrigerator, and the automatic opening and closing door device for the refrigerator is arranged at the top and/or the bottom of a refrigerator body.

The refrigerator comprises a refrigerator body 1 and a door body 2; the refrigerator body 1 is connected with the door body 2 through a hinge 3, and one end of the hinge 3 is fixed at the top of the refrigerator body 1 through a bolt; the other end of the hinge 3 is provided with a rotating shaft, the top of the door body 2 is provided with a shaft hole C matched with the rotating shaft, and a bearing C31 is arranged between the shaft hole C and the rotating shaft in a matching manner.

Wherein, the week side of gear box 411 sets up the fixed block and sets up bolt hole 4114 on the fixed block, and refrigerator automatic door opening and closing device passes through bolt hole 4114 to be fixed on box 1.

The end part of a connecting rod of the automatic door opening and closing device of the refrigerator is hinged on the door body 2; the door body 2 is provided with a hinge shaft 21 engaged with the bearing B431.

A crank sliding block mechanism is formed among the push rod 42, the connecting rod 43, the box body 1 and the door body 2, wherein the push rod 42 serves as a sliding block, the door body 2 serves as a crank, the box body 1 serves as a rack, and the sliding block is connected with the crank through the connecting rod 43.

When the door is opened, the driving device 44 rotates forwards, the speed is reduced by the speed reducer, the circular motion of the motor is converted into the linear motion of the push rod 42 through the gear rack, the push rod 42 moves forwards, the thrust of the push rod 42 is transmitted to the door body 2 through the connecting rod 43 and is converted into the circular motion of the door body 2, and the door body 2 is driven to be opened automatically.

When the door is closed, the driving device 44 rotates reversely, the speed is reduced by the speed reducer, the circular motion of the motor is converted into the linear motion of the push rod 42 through the gear rack, the push rod 42 moves backwards, the pulling force of the push rod 42 is transmitted to the door body 2 through the connecting rod 43, the circular motion of the door body 2 is converted, and the door body 2 is driven to be closed automatically.

The invention realizes the automatic opening and closing of the door body 2 by utilizing the principle of a crank slider mechanism.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An automatic door opening and closing device for a refrigerator, characterized in that: it comprises a gear box (41), a push rod (42), a connecting rod (43), a drive device (44) and a reducer device;

The gear box (41) comprises a gear box box body (411) and a gear box box cover (412) fixed by screws and cooperating with each other;

The drive device (44), the speed reducer device and the connecting rod (43) are installed in the gearbox casing (411) in cooperation with each other; the push rod (42) is hinged with the connecting rod (43).

2. An automatic door opening and closing device for a refrigerator according to claim 1, characterized in that, the driving device (44) is installed in the motor slot of the gear box body (411); the driving device (44) ) is provided with a motor shaft (441), and a worm (451) is sleeved on the motor shaft (441).

3. An automatic door opening and closing device for a refrigerator according to claim 2, characterized in that the speed reducer device comprises a first gear (453) and a second gear (454) that mesh with each other, and the speed reducer device furthermore comprising a worm gear (452) meshing with the second gear (454), the worm gear (452) being drive-connected with the worm (451);

The first gear (453), the second gear (454) and the worm gear (452) are all installed in the gearbox casing (411) through a gear shaft (46);

A shaft hole D (4113) for installing the gear shaft (46) is provided in the gear box case (411).

4. An automatic door opening and closing device for a refrigerator according to claim 3, characterized in that a guide rail (4111) is provided in the gear box case (411), and the guide rail (4111) runs through the gear box case body (411) and extend to the outside of the gearbox casing (411); screw holes (4112) are respectively provided at both ends of the guide rail (4111);

One side of the push rod (42) is provided with a rack structure (421), and a bottom side of the push rod (42) is provided with a slider (422) that can be slidably fitted along the guide rail (4111); the push rod (4111) 42) is also provided with a shaft hole A (423),

The rack structure (421) meshes with the first gear (453).

5 . The automatic door opening and closing device for a refrigerator according to claim 1 , wherein two ends of the connecting rod ( 43 ) are respectively provided with a shaft hole B, and a bearing is installed in the shaft hole B in cooperation with the shaft hole B. 6 . B (431), one end of the connecting rod (43) is hinged with the end of the push rod (42) provided with the shaft hole A (423).

6 . The automatic door opening and closing device for a refrigerator according to claim 1 , wherein the driving device ( 44 ) is a motor. 7 .

7. A refrigerator, characterized in that it comprises an automatic door opening and closing device for a refrigerator according to any one of claims 1-6;

The refrigerator automatic door opening and closing device is installed on the top and/or bottom of the box body.

8. A refrigerator according to claim 7, characterized in that it comprises a box body (1) and a door body (2); the box body (1) and the door body (2) are connected by a hinge (3) , one end of the hinge (3) is fixed on the top of the box (1) by bolts;

The other end of the hinge (3) is provided with a rotating shaft, the top of the door body (2) is provided with a shaft hole C matched with the rotating shaft, and a bearing C (31) is fitted between the shaft hole C and the rotating shaft.

9 . The refrigerator according to claim 7 , wherein a fixing block is arranged on the peripheral side of the gear box body ( 411 ) and a bolt hole ( 4114 ) is arranged on the fixing block, and the refrigerator The automatic door opening and closing device is fixed on the box body (1) through the bolt holes (4114).

10 . The refrigerator according to claim 7 , wherein the end of the connecting rod of the automatic door opening and closing device of the refrigerator is hinged on the door body ( 2 ); the door body ( 2 ) is provided with a The hinge shaft (21) is matched with the bearing B (431).