CN111503981B

CN111503981B - Automatic door opening and closing device of refrigerator and refrigerator

Info

Publication number: CN111503981B
Application number: CN202010327693.0A
Authority: CN
Inventors: 张魁仓; 张卫卫; 李乾坤
Original assignee: Changhong Meiling Co Ltd
Current assignee: Changhong Meiling Co Ltd
Priority date: 2020-04-23
Filing date: 2020-04-23
Publication date: 2021-07-27
Anticipated expiration: 2040-04-23
Also published as: CN111503981A

Abstract

The invention discloses an automatic door opening and closing device of a refrigerator and the refrigerator, and relates to the technical field of refrigerators. The automatic door opening and closing device comprises a torsion module, a speed reducing module, an ejection module, a driving device, a spring and a push rod which are arranged in a gear box; a worm is arranged on an output shaft of the driving device, a worm wheel matched with the worm is further arranged in the gear box through a first mounting shaft, and the driving device is connected with the speed reduction module in a matched mode; the speed reducing module is connected with the ejection module in a matching way; the speed reducing module is connected with a twisting module. The invention integrates the door body ejection and torsion into one device, and can realize the automatic opening and closing of a single door body by using one motor.

Description

Automatic door opening and closing device of refrigerator and refrigerator

Technical Field

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

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 door strip of paper used for sealing suction need be overcome when the door body is opened, and the initial moment of torsion of needs is great, and single module initial moment of torsion is difficult to reach the initial moment of torsion of opening the door, and for the automatic switch who realizes the door body, current automatic switch door scheme, single door body switch are mostly for many motors multimode cooperation use, and the cost is comparatively expensive, is difficult to obtain wide application.

Disclosure of Invention

The invention aims to provide an automatic door opening and closing device of a refrigerator and the refrigerator, 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 torsion module, a speed reducing module, an ejection module and a driving device, wherein the torsion module, the speed reducing module, the ejection module and the driving device are arranged in a gear box; a worm is installed on an output shaft of the driving device, a worm wheel matched with the worm is further installed in the gear box through an installation shaft I, and the driving device is connected with the speed reduction module in a matched mode; the speed reducing module is connected with the ejection module in a matching way; and the speed reducing module is connected with a twisting module.

Further, the driving device is a motor.

Further, the bottom of the worm wheel is provided with a gear A; the speed reducing module comprises a lower gear which is matched and connected with the gear A, an upper gear is arranged on the lower gear, an arc-shaped through hole is formed in one side of the lower gear, clutch gear teeth are arranged on one side, away from the arc-shaped through hole, of the upper gear, and the clutch gear teeth and the upper gear form an incomplete gear; the lower gear and the upper gear are an integral component; the lower gear is installed in the gear box through a second installation shaft.

Furthermore, a torsion module is connected to the second mounting shaft and comprises a connecting rod a and a connecting rod b, one end of the connecting rod a is connected with the second mounting shaft, and the other end of the connecting rod a is connected with the connecting rod b; the connecting rod a is also provided with a convex column which is inserted into the arc-shaped through hole and moves along the arc-shaped through hole.

Furthermore, the ejection module comprises a push rod, and one side of the push rod is provided with a rack; a gear B meshed with the rack is arranged in the gear box, and the gear B is meshed with clutch gear teeth on the incomplete gear; one end of the push rod is connected with a return spring, and the end part of the return spring is fixed on the gear box.

Furthermore, a T-shaped sliding plate is arranged on the other side of the push rod; and a sliding groove matched with the T-shaped sliding plate to slide is arranged on the gear box.

Further, an electromagnetic clutch or an encoder is installed in the gear box.

Further, the automatic door opening and closing device is installed at the top and bottom of the refrigerator.

A refrigerator having an automatic door opening and closing apparatus, comprising the automatic door opening and closing apparatus as described above; the refrigerator also comprises a refrigerator body and a door body; the box body is connected with the door body through a hinge; and the door body is provided with an ejection bump matched with the ejection module.

Furthermore, the automatic door opening and closing device is fixed at the top of the box body; 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, and the door body is provided with a shaft hole matched with the rotating shaft.

The invention has the following beneficial effects:

the invention integrates the door body ejection and torsion into one device, and can realize the automatic opening and closing of a single door body by using one motor.

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 an automatic door opening and closing device according to the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is a schematic view of the door closing of the present invention;

FIG. 4 is a schematic view of the door of the present invention;

FIG. 5 is a schematic view of the automatic door opening of the present invention;

fig. 6 is a schematic view of the automatic door closing apparatus 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 to 6, the present invention is an automatic door opening and closing device for a refrigerator, which includes a torsion module, a deceleration module, an ejection module, and a driving device 31 installed in a gear box 3; a worm 32 is installed on an output shaft of the driving device 31, a worm wheel 33 matched with the worm 32 is also installed in the gear box 3 through an installation shaft I, and the driving device 31 is matched and connected with the speed reduction module; the speed reducing module is connected with the ejection module in a matching way; the speed reducing module is connected with a twisting module.

Wherein, the driving device 31 is a motor, the motor is installed in a motor groove in the gear box 3, and the worm 32 is fixed on the motor shaft.

Wherein, the bottom of the worm wheel 33 is provided with a gear A331; the speed reducing module comprises a lower gear 34 which is matched and connected with a gear A331, an upper gear 341 is arranged on the lower gear 34, an arc-shaped through hole 343 is arranged on one side of the lower gear 34, clutch gear teeth 342 are arranged on one side of the upper gear 341 far away from the arc-shaped through hole 343, and the clutch gear teeth 342 and the upper gear 341 form an incomplete gear; the lower gear 34 and the upper gear 341 are an integral member; the lower gear 34 is mounted in the gear housing 3 by a mounting shaft two.

The second mounting shaft is also connected with a torsion module, the torsion module comprises a connecting rod a36 and a connecting rod b39, one end of the connecting rod a36 is connected with the second mounting shaft, and the other end of the connecting rod a36 is connected with the connecting rod b 39; the connecting rod a36 is further provided with a convex column 361 inserted into the arc-shaped through hole 343 and moving along the arc-shaped through hole 343.

Wherein, the ejection module comprises a push rod 37, and one side of the push rod 37 is provided with a rack 371; a gear B35 meshed with the rack 371 is arranged in the gear box 3, and a gear B35 is meshed with a clutch gear tooth 342 on the incomplete gear; one end of the push rod 37 is connected with a return spring 372, and the end part of the return spring 372 is fixed on the gear box 3.

Wherein, the other side of the push rod 37 is provided with a T-shaped sliding plate 373; the gear box 3 is provided with a sliding groove 38 which is matched with the T-shaped sliding plate 373 to slide.

Wherein, an electromagnetic clutch or an encoder is arranged in the gear box 3.

The automatic door opening and closing device is arranged at the top and the bottom of the refrigerator.

A refrigerator with an automatic door opening and closing device comprises the above automatic door opening and closing device; the refrigerator also comprises a refrigerator body 1 and a door body 2; the box body 1 is connected with the door body 2 through a hinge 4; the door body 2 is provided with an ejection convex block 21 matched with the ejection module.

Wherein, the automatic door opening and closing device is fixed on the top of the box body 1; one end of the hinge 4 is fixed at the top of the box body 1 through a bolt, the other end of the hinge is provided with a rotating shaft, and the door body 2 is provided with a shaft hole matched with the rotating shaft.

Wherein, the rotating shaft is matched with the shaft hole, so that the door body 2 can rotate around the rotating shaft on the hinge 4.

When the gearbox is installed, the gearbox 3 is installed at the top of the box body 1, the other end of the connecting rod b39 is hinged with the door body 2, and the connecting rod a36 and the connecting rod b39 can rotate around the hinged position respectively.

When the door is opened, the motor rotates forwards, the speed is reduced by the speed reduction module, the clutch gear teeth 342 on the incomplete gear are meshed with the gear B35, and the convex column 361 is matched with the arc-shaped through hole 343 and generates relative displacement; at the moment, the motor driving force acts on the ejection module, the torsion module is not driven by the motor, and the circular motion of the motor is converted into the linear motion of the push rod 37 through the rack 371; the push rod 37 pushes the refrigerator door body 2 away by a certain angle until the clutch gear 342 on the incomplete gear is separated from the gear B35, the push rod 37 resets under the action of the reset spring 372, the arc-shaped through hole 343 on the incomplete gear is abutted against the convex column 361, and the torsion module pushes the door body 2 to automatically open the door under the driving force of the motor;

when the door is closed, the motor rotates reversely, the gear A331 is meshed with the lower gear 34 after the speed reduction of the speed reduction module, the convex column 361 on the connecting rod a36 of the torsion module is abutted to one side surface of the arc-shaped through hole 343, and the door body 2 is driven to be automatically closed through the torsion module under the rotation action of the lower gear 34.

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 comprises a torsion module, a speed reducing module, an ejection module and a driving device (31), wherein the torsion module, the speed reducing module, the ejection module and the driving device are arranged in a gear box (3);

a worm (32) is arranged on an output shaft of the driving device (31), a worm wheel (33) matched with the worm (32) is also arranged in the gear box (3) through a first mounting shaft,

the driving device (31) is connected with the speed reducing module in a matching way; the speed reducing module is connected with the ejection module in a matching way; the speed reduction module is connected with a torsion module; it is characterized in that;

the bottom of the worm wheel (33) is provided with a gear A (331);

the speed reducing module comprises a lower gear (34) which is matched and connected with a gear A (331), an upper gear (341) is arranged on the lower gear (34),

an arc-shaped through hole (343) is formed in one side of the lower gear (34), clutch gear teeth (342) are arranged on one side, far away from the arc-shaped through hole (343), of the upper gear (341), and the clutch gear teeth (342) and the upper gear (341) form an incomplete gear;

the lower gear (34) and the upper gear (341) are an integral component;

the lower gear (34) is arranged in the gear box (3) through a second mounting shaft;

a torsion module is further connected to the second mounting shaft and comprises a connecting rod a (36) and a connecting rod b (39), one end of the connecting rod a (36) is connected with the second mounting shaft, and the other end of the connecting rod a (36) is connected with the connecting rod b (39); the connecting rod a (36) is also provided with a convex column (361) which is inserted into the arc-shaped through hole (343) and moves along the arc-shaped through hole (343);

the ejection module comprises a push rod (37), and one side of the push rod (37) is provided with a rack (371);

a gear B (35) meshed with the rack (371) is arranged in the gear box (3), and the gear B (35) is meshed with a clutch gear tooth (342) on the incomplete gear;

one end of the push rod (37) is connected with a return spring (372), and the end part of the return spring (372) is fixed on the gear box (3).

2. An automatic door opening and closing device for a refrigerator according to claim 1, wherein said driving means (31) is a motor.

3. An automatic door opening and closing device for a refrigerator as claimed in claim 1, wherein a T-shaped sliding plate (373) is provided at the other side of said push rod (37); and a sliding groove (38) which is matched with the T-shaped sliding plate (373) to slide is arranged on the gear box (3).

4. An automatic door opening and closing device for a refrigerator according to claim 1, wherein an electromagnetic clutch or an encoder is installed in the gear box (3).

5. The automatic door opening and closing device for a refrigerator as claimed in claim 1, wherein the automatic door opening and closing device is installed at a top and a bottom position of the refrigerator.

6. A refrigerator with an automatic door opening and closing device is characterized in that: comprises the automatic door opening and closing device as claimed in any one of claims 1 to 5; the refrigerator also comprises a refrigerator body (1) and a door body (2);

the box body (1) is connected with the door body (2) through a hinge (4);

the door body (2) is provided with an ejection bump (21) matched with the ejection module.

7. The refrigerator with an automatic door opening and closing device as claimed in claim 6, wherein the automatic door opening and closing device is fixed to the top of the cabinet (1);

one end of the hinge (4) is fixed at the top of the box body (1) through a bolt, the other end of the hinge is provided with a rotating shaft, and the door body (2) is provided with a shaft hole matched with the rotating shaft.