Automatic door opening device and refrigerator

Abstract

The utility model discloses an automatic door opening device and a refrigerator, and relates to the technical field of door opening devices, the automatic door opening device comprises a door opener seat arranged on the top of a refrigerator body, an electric push rod arranged in the door opener seat, and a door opener cover detachably buckled on the door opener seat, the push rod can extend outwards to push the door body open, and a guide block for guiding the push rod is arranged on the door opener cover. When the refrigerator door is opened, the push rod extends out to push the door body open by a certain angle, then a user opens the door body completely, and the problem that the refrigerator door body is difficult to open due to negative pressure in the refrigerator body is solved. And the door opener base and the door opener cover are arranged, installation of the electric push rod is facilitated, the guide block guides extension of the push rod, and the door opening efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of door opening devices, in particular to an automatic door opening device and a refrigerator. Background Art

[0002] With the progress of society and the development of science and technology, people have higher and higher requirements for the quality of life. As a common household appliance in life, refrigerators also have higher and higher requirements. In order to prevent the leakage of cold air, refrigerators usually use door seals to achieve a good sealing effect. However, due to the large suction force of the door seal and the formation of a certain negative pressure in the refrigerator body during refrigeration, it is difficult for users to open the refrigerator door. Utility Model Content

[0003] The utility model aims to provide an automatic door opening device and a refrigerator, aiming to solve the technical problem that the refrigerator door is difficult to open in the prior art.

[0004] In order to solve the above technical problems, the technical solution of the utility model is:

[0005] An automatic door opening device includes a door opener seat installed on the top of a box body, an electric push rod installed in the door opener seat, and a door opener cover that is detachably snapped onto the door opener seat. The door opener seat is provided with an opening through which a push rod for the electric push rod extends. The push rod can extend outward to push the door body open, and the door opener cover is provided with a guide block for guiding the push rod.

[0006] With the above structure, when opening the door, the push rod extends to push the door open to a certain angle, and the user then fully opens the door, thereby avoiding the problem that the refrigerator door is difficult to open due to the negative pressure in the refrigerator body. The door opener seat and the door opener cover are provided to facilitate the installation of the electric push rod, and the guide block guides the extension of the push rod to improve the door opening efficiency.

[0007] Preferably, the door opener cover is buckled outside the door opener seat, the front end of the door opener seat is provided with a plurality of clamping blocks, the rear end of the clamping blocks is provided with a clamping groove, and the door opener cover is provided with a clamping protrusion that can be clamped into the clamping groove. The clamping protrusion cooperates with the clamping groove so that the door opener cover and the front end of the door opener seat are clamped.

[0008] Preferably, a plurality of mounting posts are fixedly connected to the door opener seat, threaded holes are provided on the mounting posts, mounting holes for screws to pass through are provided on the door opener cover, and the screws are screwed into the threaded holes. By screwing the screws into the mounting posts, the door opener cover is conveniently fixed to the door opener seat.

[0009] Preferably, a rubber pad is provided at the front end of the push rod, which can prevent the push rod from pushing the door body, causing wear of the door body, and improve the service life of the door body.

[0010] Preferably, a voice module is provided on the box body, and the voice module is electrically connected to the electric push rod. The provision of the voice module enables the user to control the start of the electric push rod by voice, thereby controlling the automatic opening of the door body.

[0011] A refrigerator is provided with an automatic door opening device. The automatic door opening device is provided on the refrigerator so that the refrigerator door can be opened automatically, thereby avoiding the problem that the user has difficulty in opening the refrigerator door due to the large suction force of the door seal and the negative pressure when the refrigerator is refrigerating.

[0012] Preferably, the door body is hinged on the box body, an upper resetter is installed at the lower end of the door body, a lower resetter is installed at the lower end of the box body and is located below the upper resetter and is arranged obliquely, the upper resetter and the lower resetter are hinged through a hinge shaft, an upper protrusion is provided on the upper resetter, and a lower recessed portion adapted to the upper protrusion is provided on the lower resetter. The lower resetter is arranged obliquely, so that when closing the door, the surface contact movement of the upper resetter and the lower resetter is changed into line contact, and the friction resistance is smaller. Under the action of gravity, the upper protrusion of the upper resetter slides down and swings along the inclined surface of the lower recessed portion of the lower resetter, and the door body is automatically closed, so that when the door body is accidentally opened or the door is forgotten to be closed manually, the door body will be automatically closed by gravity.

[0013] Preferably, a base plate is installed at the lower end of the box body, a hinge shaft and a positioning pin are installed on the base plate, a first through hole for the hinge shaft to pass through and a second through hole for the positioning pin to pass through are opened on the lower resetter, a first boss is provided on the outer wall of the hinge shaft, a second boss is provided on the outer wall of the positioning pin, and the height of the second boss is greater than the height of the first boss. By setting the positioning pin, the second boss and the first boss, the lower resetter and the base plate have a certain angle, so that the lower resetter is tilted and the door body is automatically closed.

[0014] Preferably, a first groove for accommodating the first boss and a second groove for accommodating the second boss are provided at the bottom of the lower resetter, and the first groove and the second groove have the same depth. The first groove and the second groove can accommodate the first boss and the second boss, so as to facilitate the lower resetter to be installed on the substrate at an angle.

[0015] After adopting the above technical solution, the beneficial effects of the utility model are:

[0016] 1. When opening the door, the push rod extends and pushes the door open to a certain angle, and then the user fully opens the door to avoid the problem that the refrigerator door is difficult to open due to the negative pressure inside the refrigerator. The door opener seat and door opener cover are set to facilitate the installation of the electric push rod, and the guide block guides the extension of the push rod to improve the door opening efficiency.

[0017] 2. The clamping protrusion and the clamping groove cooperate to make the front end of the door opener cover and the door opener seat clamped. By screwing the screws into the mounting column, it is convenient to fix the door opener cover on the door opener seat. The setting of the rubber pad can prevent the push rod from pushing the door body, causing wear of the door body, and prolong the service life of the door body.

[0018] 3. The lower resetter is tilted so that when closing the door, the surface contact movement between the upper resetter and the lower resetter becomes line contact, with smaller friction resistance. Under the action of gravity, the upper protrusion of the upper resetter slides down and swings along the inclined surface of the lower recessed part of the lower resetter to automatically close the door body, so that when the door body is accidentally opened or forgotten to be closed manually, the door body will automatically close under the action of gravity. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the top view of the structure of an automatic door opening device of the utility model;

[0020] Figure 2 This is a schematic diagram of the exploded structure of an automatic door opening device of the utility model;

[0021] Figure 3 It is a schematic diagram of the structure of the refrigerator (the door is automatically opened);

[0022] Figure 4 It is a three-dimensional structural schematic diagram of the upper resetter and the lower resetter (door body fully opened state);

[0023] Figure 5 It is a schematic diagram of the cross-sectional structure of the lower resetter and the hinge plate.

[0024] In the figure, the door opener seat 1, the opening 10, the clamping block 11, the clamping groove 12, the mounting column 13, the threaded hole 14, the screw 15, the electric push rod 2, the push rod 20, the rubber pad 21, the door opener cover 3, the guide block 30, the clamping protrusion 31, the mounting hole 32, the door body 4, the box body 5, the upper resetter 6, the hinge shaft 60, the upper protrusion 61, the first boss 62, the lower resetter 7, the lower recessed portion 70, the first through hole 71, the second through hole 72, the first groove 73, the second groove 74, the base plate 8, the positioning pin 9, the second boss 90, DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings.

[0026] The positions mentioned in this specification are based on the positions of the automatic door opening device and the refrigerator of the utility model when they are working normally. They do not limit the positions during storage and transportation. They only represent relative position relationships, not absolute position relationships.

[0027] Embodiment 1:

[0028] like Figure 1, Figure 2 and Figure 3 As shown, an automatic door opening device includes a door opener seat 1 installed on the top of a box body 5, an electric push rod 2 installed in the door opener seat 1, and a door opener cover 3 detachably buckled on the door opener seat 1. The door opener seat 1 is provided with an opening 10 for extending a push rod 20 of the electric push rod 2. The push rod 20 can extend outward to push the door body 4 open. The door opener cover 3 is provided with a guide block 30 for guiding the push rod 20. The inner wall of the guide block 30 is arranged in an arc shape, and the opening 10 is arranged in an arc shape.

[0029] When opening the door, the push rod 20 of the electric push rod 2 extends to push the door body 4 to a certain angle, and then the push rod 20 of the electric push rod 2 automatically retracts after being extended, and the door body 4 is still in a state of being opened at a small angle. The user then fully opens the door body 4, thereby avoiding the problem that the refrigerator door body 4 is difficult to open due to the negative pressure in the refrigerator body 5. The arrangement of the door opener seat 1 and the door opener cover 3 facilitates the installation of the electric push rod 2, and the guide block 30 guides the extension of the push rod 20 to improve the door opening efficiency.

[0030] As a preferred example of this embodiment, the door opener cover 3 is buckled on the outside of the door opener seat 1, a plurality of snap-in blocks 11 are provided at the front end of the door opener seat 1, a snap-in groove 12 is provided at the rear end of the snap-in blocks 11, and a snap-in protrusion 31 that can be snapped into the snap-in groove 12 is provided on the door opener cover 3. In this embodiment, two snap-in blocks 11 are provided. The snap-in blocks 11 and the door opener seat 1 are integrally formed, and the snap-in protrusion 31 is integrally formed with the door opener cover 3. The snap-in protrusion 31 cooperates with the snap-in groove 12, so that the door opener cover 3 and the front end of the door opener seat 1 are snap-in.

[0031] As a preferred example of this embodiment, a plurality of mounting columns 13 are fixedly connected to the door opener seat 1. The mounting columns 13 and the door opener seat 1 are integrally cast and formed. The mounting columns 13 are provided with mounting holes 32 for screws 15 to pass through. The screws 15 are screwed into the threaded holes 14. In this embodiment, four mounting columns 13 are provided. By screwing the screws 15 into the mounting columns 13, the door opener cover 3 is conveniently fixed to the door opener seat 1.

[0032] As a preferred example of this embodiment, a rubber pad 21 is sleeved on the front end of the push rod 20. The provision of the rubber pad 21 can prevent the push rod 20 from pushing the door body 4, causing wear of the door body 4, and improve the service life of the door body 4.

[0033] As a preferred example of this embodiment, a voice module is provided on the box 5, and the voice module is electrically connected to the electric push rod 2. Specifically, the voice module includes a controller, and the electric push rod 2 is electrically connected to the controller. The setting of the voice module enables the user to control the start of the electric push rod 2 by voice, thereby controlling the automatic opening of the door body 4.

[0034] Embodiment 2:

[0035] like Figures 1 to 5 As shown, a refrigerator is equipped with an automatic door opening device in an embodiment. The full opening angle of the refrigerator is 90 degrees. The automatic door opening device is installed on the refrigerator so that the refrigerator door can be opened automatically, avoiding the problem that the user is difficult to open the refrigerator door due to the large suction force of the door seal and the negative pressure when the refrigerator is refrigerating.

[0036] As a preferred case of this embodiment, the door body 4 is hinged on the box body 5, and an upper resetter 6 is installed at the lower end of the door body 4. A lower resetter 7 located below the upper resetter 6 and tilted is installed at the lower end of the box body 5. The upper resetter 6 and the lower resetter 7 are hinged by a hinge shaft 60, and an upper protrusion 61 is provided on the upper resetter 6, and a lower recessed portion 70 adapted to the upper protrusion 61 is provided on the lower resetter 7. The upper resetter 6 is fixed to the door body 4 by bolts. The lower resetter 7 is tilted, so that when closing the door, the surface contact movement of the upper resetter 6 and the lower resetter 7 is changed into line contact, and the friction resistance is smaller. Under the action of gravity, the upper protrusion 61 of the upper resetter 6 slides and swings along the inclined surface of the lower recessed portion 70 of the lower resetter 7, and the door body 4 swings with the upper resetter 6, and the door body 4 is automatically closed, so that when the door body 4 accidentally touches the door or forgets to close the door manually, the door body 4 will be automatically closed by gravity.

[0037] As a preferred example of this embodiment, a base plate 8 is installed at the lower end of the box body 5, a hinge shaft 60 and a positioning pin 9 are installed on the base plate 8, a first through hole 71 for the hinge shaft 60 to pass through and a second through hole 72 for the positioning pin 9 to pass through are provided on the lower resetter 7, a first boss 62 is provided on the outer wall of the hinge shaft 60, and a second boss 90 is provided on the outer wall of the positioning pin 9, and the height of the second boss 90 is greater than the height of the first boss 62. A jack for inserting the hinge shaft 60 and the positioning pin 9 is provided on the base plate 8. By setting the positioning pin 9, and setting the second boss 90 and the first boss 62, the lower resetter 7 and the base plate 8 have a certain angle, so that the lower resetter 7 is tilted, and the door body 4 is automatically closed.

[0038] As a preferred example of this embodiment, the bottom of the lower resetter 7 is provided with a first groove 73 for accommodating the first boss 62 and a second groove 74 for accommodating the second boss 90, and the first groove 73 and the second groove 74 have the same depth. The first groove 73 and the second groove 74 are provided to accommodate the first boss 62 and the second boss 90, so as to facilitate the lower resetter 7 to be installed on the substrate 8 at an angle.

[0039] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. An automatic door opening device, It is characterized in that The invention comprises a door opener seat installed on the top of a box body, an electric push rod installed in the door opener seat, and a door opener cover which is detachably buckled on the door opener seat. The door opener seat is provided with an opening through which a push rod for the electric push rod extends. The push rod can extend outward to push the door body open, and the door opener cover is provided with a guide block for guiding the push rod.

2. An automatic door opening device as claimed in claim 1, It is characterized in that The door opener cover is buckled on the outside of the door opener seat, a plurality of clamping blocks are arranged at the front end of the door opener seat, a clamping groove is arranged at the rear end of the clamping block, and a clamping protrusion which can be clamped into the clamping groove is arranged on the door opener cover.

3. An automatic door opening device as claimed in claim 2, It is characterized in that A plurality of mounting columns are fixedly connected to the door opener seat, threaded holes are provided on the mounting columns, and mounting holes for screws to pass through are provided on the door opener cover, and the screws are threadedly installed in the threaded holes.

4. An automatic door opening device as claimed in claim 1, It is characterized in that The front end of the push rod is sleeved with a rubber pad.

5. An automatic door opening device as claimed in claim 1, It is characterized in that The box body is provided with a voice module, and the voice module is electrically connected to the electric push rod.

6. A refrigerator, It is characterized in that An automatic door opening device as claimed in any one of claims 1 to 5 is installed on the refrigerator.

7. A refrigerator as claimed in claim 6, It is characterized in that The door body is hinged on the box body, an upper resetter is installed at the lower end of the door body, and a lower resetter is installed at the lower end of the box body, which is located below the upper resetter and is inclined. The upper resetter and the lower resetter are hinged through a hinge axis, an upper protrusion is provided on the upper resetter, and a lower recessed portion matched with the upper protrusion is provided on the lower resetter.

8. A refrigerator as claimed in claim 7, It is characterized in that A base plate is installed at the lower end of the box body, a hinge shaft and a positioning pin are installed on the base plate, a first through hole for the hinge shaft to pass through and a second through hole for the positioning pin to pass through are opened on the lower resetter, a first boss is provided on the outer wall of the hinge shaft, and a second boss is provided on the outer wall of the positioning pin, and the height of the second boss is greater than the height of the first boss.

9. A refrigerator as claimed in claim 8, It is characterized in that A first groove for accommodating the first boss and a second groove for accommodating the second boss are formed at the bottom of the lower resetter, and the depths of the first groove and the second groove are the same.

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