CN211503393U - Automatic door opening device for refrigerator and refrigerator - Google Patents

Abstract

The utility model relates to an automatic door opener for refrigerator, include: the electromagnetic induction module is fixed in the refrigerator body through a fixing structure and comprises a solenoid and an output top shaft, and the solenoid is connected with the output top shaft in a sliding manner; and the wireless receiving module is electrically connected with the electromagnetic induction module, so that the electromagnetic induction module starts to move to separate from the magnetic seal to eject out the refrigerator door body according to the movement of the output top shaft in the electromagnetic effect solenoid after being powered by the wireless receiving module. The utility model discloses still relate to the refrigerator that contains device. The utility model discloses set up automatic door opener in the box of refrigerator and adopt wireless power supply, solved among the prior art heat that automatic door opener produced can't in time discharge, the loaded down with trivial details problem of automatic door opener power supply.

Description

Automatic door opening device for refrigerator and refrigerator

Technical Field

The utility model belongs to the technical field of refrigeration plant, concretely relates to an automatic door opener, refrigerator for refrigerator.

Background

With the improvement of living standard, the intelligent refrigerator is increasingly popular and accepted in the market. At present, a user tends to a refrigerator with a large volume, but the suction force of a refrigerator door seal with the large volume is also large, and the use experience of the user is improved by an automatic door opening device.

However, the conventional electric door-opening refrigerator generally arranges the automatic door-opening device at the top outside the refrigerator body, and the automatic door-opening device can generate a large amount of heat after being frequently used and can influence the performance of the automatic door-opening device when being discharged in time. In addition to this, the present invention is,

so need improve automatic door opener, optimize its structural design, design a neotype automatic door opener, the refrigerator that is used for the refrigerator and solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the first object of the present invention is to provide an automatic door opening device for a refrigerator, comprising: the electromagnetic induction module is fixed in the refrigerator body through a fixing structure and is positioned on one side far away from a refrigerator door hinge, and comprises a solenoid and an output top shaft, and the solenoid is connected with the output top shaft in a sliding manner; the wireless receiving module is positioned on the electromagnetic induction module and is positioned on one side of the electromagnetic induction module, which is in contact with the refrigerator body; the wireless receiving module is electrically connected with the electromagnetic induction module, so that after the electromagnetic induction module is powered by the wireless receiving module, the solenoid is powered on, and the output top shaft in the solenoid starts to move according to the electromagnetic effect, so that the output top shaft ejects out the household appliance door body and is separated from the magnetic seal.

Preferably, the fixing structure comprises: the refrigerator comprises a base, a door opening and a door opening, wherein the base is a shell extending along one direction, and one side of the base is fixed in the refrigerator body; the electromagnetic induction module comprises a first shell buckled with the base, an installation space is formed between the base and the first shell, and the electromagnetic induction module is fixed in the installation space.

Preferably, one end of the output top shaft, which is far away from the door body, further comprises an elastic member, and the elastic member is sleeved on the periphery of the output top shaft, so that the elastic member drives the output top shaft to restore to an initial position after the solenoid is powered off.

Preferably, the base further comprises at least two mounting seats, and the mounting seats are used for providing support for the electromagnetic induction module.

Preferably, the household appliance door further comprises a buffer piece, wherein the buffer piece is positioned on one side far away from the household appliance door body, so that a buffer structure between the output top shaft and the base is formed after the solenoid is powered off.

Preferably, the base further comprises a fixing seat, and the fixing seat fixes the buffer member on the base from different sides of the buffer member.

Preferably, the buffer is a compression spring, and the compression spring is a conical coil spring.

Preferably, the fixing seat comprises an open slot for placing the buffer member, two sides of the open slot are respectively sunken inwards to form a first groove and a second groove, and different side surfaces of the buffer member are respectively abutted against the first groove and the second groove.

A second object of the present invention is to provide a refrigerator, which comprises a refrigerator body, a door body, a magnetic sealing gasket for keeping the door body in a closed state, and a wireless power supply module; the refrigerator body comprises the automatic door opener for the refrigerator, the automatic door opener is used for opening and closing the door body on the refrigerator body in an attracting mode, and the wireless receiving module provides electric energy for the automatic door opener for the refrigerator.

Preferably, the automatic door opening device for the refrigerator comprises two electromagnetic induction modules, and one end of an output top shaft of each electromagnetic induction module is used for abutting against and opening a door body sucked on the refrigerator body.

Compared with the prior art, the beneficial effects of the utility model reside in that:

(1) the automatic door opener is arranged inside the refrigerator body, so that the problem that a large amount of heat is generated due to frequent use of the automatic door opener is solved.

(2) The elastic component is arranged at one end, far away from the refrigerator door body, of the output top shaft, so that the output top shaft can automatically rebound after the solenoid is powered off.

(3) Through set up the bolster in the base to make output apical axis is comparatively gentle when kick-backing.

(4) Through set up limit switch between output apical axis and base, when output apical axis surpassed the biggest predetermined movement length, wireless receiving module stops for the solenoid power supply prevents that output apical axis from extending forward all the time and causing the incident.

The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings. The detailed description of the present invention is given by the following examples and the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:

fig. 1 is a schematic structural view of a first casing for a refrigerator according to the present invention;

fig. 2 is a schematic view of the internal structure of an automatic door opener for a refrigerator according to the present invention;

fig. 3 is a schematic structural view of a base for a refrigerator according to the present invention;

fig. 4 is a schematic structural diagram of an electromagnetic induction module for a refrigerator according to the present invention;

fig. 5 is a partial structural schematic view of a base with a conical helical spring for a refrigerator according to the present invention;

fig. 6 is a schematic view of the overall structure of a refrigerator according to the present invention;

fig. 7 is a schematic structural diagram of a wireless transmitting module according to the present invention;

fig. 8 is a schematic structural diagram of a wireless transmitting module of the present invention;

fig. 9 is a schematic structural diagram of the wireless receiving module of the present invention.

Shown in the figure:

200. a refrigerator;

100. automatic door opening device for refrigerator: 11. the wireless power supply module comprises a first shell, 111, a through hole, 12, a base, 121, a fixed seat, 122, an open slot, 123, a first groove, 124, a second groove, 13, a wireless power supply module, 131, a wireless receiving module, 132, a wireless transmitting module, 1311, a coil, 1312, a printed circuit board, 1313, a magnetic core, 1314, rubber, 1315, a transparent piece, 1321, a coil, 1322, a printed circuit board, 1323 and a magnetic core; 1324. rubber, 14, elastic component, 15, buffer, 16, output top shaft, 17, electromagnetic induction module, 18, interference part, 19, second casing, 191, mount pad, 192, rubber pad, 193, extension, 194, mounting groove.

Detailed Description

The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the annexed drawings, discloses a more detailed description of the present invention, which will enable those skilled in the art to make and use the present invention. In the drawings, the shape and size may be exaggerated for clarity, and the same reference numerals will be used throughout the drawings to designate the same or similar components. In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, and the like are used based on the orientation or positional relationship shown in the drawings. In particular, "height" corresponds to the dimension from top to bottom, "width" corresponds to the dimension from left to right, and "depth" corresponds to the dimension from front to back. These relative terms are for convenience of description and are not generally intended to require a particular orientation. Terms concerning attachments, coupling and the like (e.g., "connected" and "attached") refer to a relationship wherein structures are secured or attached, either directly or indirectly, to one another through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the following embodiments or technical features can be used to form a new embodiment without conflict.

Example one

As shown in fig. 1 to 6, an automatic door opening device 100 for a refrigerator for automatically opening a door of the refrigerator. The automatic door opening device 100 for the refrigerator comprises an electromagnetic induction module 17, wherein the electromagnetic induction module 17 is fixed in the refrigerator body. The refrigerator body is internally provided with a refrigerator body inner surface or a refrigerator body foaming layer which is partially embedded in the refrigerator body, and the electromagnetic induction module 17 is fixed through a fixing structure. Electromagnetic induction module 17 sets up in the one side of keeping away from refrigerator door hinge, preferably, in order to minimize the shared volume of automatic door opener, automatic door opener is close to the refrigerator door setting to make the push rod only need move a segment distance and can open the refrigerator door. In one embodiment, the electromagnetic induction module 17 is disposed at the top of the inside of the refrigerator cabinet, i.e., the inside of the top of the cabinet; in another embodiment, the electromagnetic induction module 17 is disposed on a side wall inside the box body. The layout modes of the two automatic door opening devices in the refrigerator have small influence on the storage space of the refrigerator.

As shown in fig. 2, the electromagnetic induction module 17 includes a solenoid, an output top shaft 16, and the solenoid is slidably connected to the output top shaft 16 so that the output top shaft 16 can slide in the solenoid. In one embodiment, the output top shaft 16 is a core; in another embodiment, the output top shaft 16 is composed of an iron core and a push rod, the solenoid drives the iron core to move after being electrified, and the iron core drives the push rod connected with the iron core to move towards the direction of the household appliance door body. The automatic door opening device for the refrigerator further comprises a wireless receiving module, wherein the wireless receiving module 131 is arranged on the electromagnetic induction module 17 and is positioned on one side, which is in contact with the refrigerator body, of the electromagnetic induction module 17; at this time, the wireless receiving module 131 can perform short-distance transmission with the wireless transmitting module 132 disposed in the refrigerator body. In one embodiment, when the electromagnetic induction module 17 is externally provided with an additional housing, for example, when the electromagnetic induction module 17 is fixed to the refrigerator body through the base 12, the wireless receiving module 131 is disposed on the electromagnetic induction module and is located at a side where the electromagnetic induction module contacts the base 12. The electromagnetic induction module 16 is electrically connected with the wireless receiving module 131, namely the wireless receiving module 131 supplies power to the electromagnetic induction module, so that the solenoid is electrified, and the output top shaft 16 in the solenoid moves towards the refrigerator door body according to the electromagnetic effect, so that the refrigerator door body is ejected out by separating from the magnetic sealing constraint. In one embodiment, the output top shaft 16 continues to move until the household appliance door body is opened to an angle to provide a space for a user to take and/or place articles, that is, an angle formed by a plane where the household appliance door body is located at present and a plane where the household appliance door body is located in an initial state is convenient for the user to take and/or place articles.

In one embodiment, the electromagnetic induction module 17 is fixed by a fixing structure. The fixing structure is an additional piece on the electromagnetic induction module, namely, the fastening structure, the fixing lugs and the like are directly attached to the electromagnetic induction module so as to fix the electromagnetic induction module in the refrigerator body. In another embodiment, the fixing structure can fix the electromagnetic induction module in the refrigerator body, and can provide a closed space for the electromagnetic induction module to prevent the electromagnetic induction module 17 from being damaged in a low-temperature environment for a long time or prevent the solenoid from being frozen to influence later use. In one embodiment, as shown in fig. 1, 3 and 4, the fixing structure includes a base 12, and the base 12 is fixed in the refrigerator 200, that is, the base 12 is fixed on the inner surface of the refrigerator or in a foaming layer in the refrigerator. The base 12 may be disposed at the top or at the side of the refrigerator cabinet. In one embodiment, when the refrigerator is a single-door refrigerator, the base 12 is arranged on one side of the refrigerator body far away from the hinge of the refrigerator door body; in one embodiment, when the refrigerator is a double-door refrigerator, the base 12 is disposed in the refrigerator body on a side away from each refrigerator door hinge. Be equipped with a plurality of installation department on base 12, base 12 passes through the installation department is fixed in the box of refrigerator.

In one embodiment, the base 12 further comprises at least two mounting seats 191 respectively disposed at two ends of the automatic door opener body to provide support for the automatic door opener body. In one embodiment, the automatic door opener is an electromagnetic induction module 17, and the mounting seats 191 are respectively disposed at two ends of the electromagnetic induction module 17. Preferably, the mounting seat 191 is provided along the moving direction of the output top shaft 16, and in this case, a shock-absorbing rubber pad may be provided on the mounting seat 191 to reduce the vibration of the output top shaft 16 during the movement.

As shown in fig. 1, the automatic door opening device 100 for a refrigerator further includes a first housing 11 fastened to a base 12. The first shell 11 may be provided with a gradient to form a wedge-shaped first shell. An installation space is formed between the base 12 and the first housing 11, and the electromagnetic induction module 17 is fixed in the installation space. The first housing 11 is further provided with a plurality of positioning holes for positioning and installation. A through hole 111 for the output top shaft 16 to move towards the refrigerator door body is formed in the first casing 11, and the size of the through hole 111 is similar to that of one end of the output top shaft close to the refrigerator door body, so that the output top shaft 16 can move freely. In one embodiment, the through hole 111 is disposed on the first housing 11, and in another embodiment, the base 12 and the first housing 11 together form the through hole 111.

As shown in fig. 4, the base 12 further includes a second housing 19, the second housing 19 is a housing extending along a direction, the electromagnetic induction module 17 is disposed in the second housing 19, that is, the second housing 19 is wrapped around the electromagnetic induction module 17, and the second housing 19 is fixed to the base 12 through a mounting seat 191 on the base 12. The second housing 19 further includes at least one extension 193, the extension 193 extends along the moving direction of the output top shaft 16, and the extension 193 is integrally formed or assembled with the second housing 19. The solenoid of the electromagnetic induction module 17 is prevented from freezing due to the arrangement in a low temperature environment by the arrangement of the second housing 19. In one embodiment, when there are two extending portions 193, the two extending portions 193 are respectively disposed on two sides of the second housing 19, that is, the two extending portions 193 are respectively disposed on two sides of the electromagnetic induction module 17. As shown in fig. 4, the extension 193 further includes at least one mounting slot 194 thereon, and the mounting slot 194 is mounted on the mounting seat 191 to fix the second housing 19 to the base 12. In one embodiment, the refrigerator further comprises at least one shock-absorbing member fixed to the mounting seat 191 through the mounting groove 194 to reduce noise when the automatic door opening device for a refrigerator is actuated. In one embodiment, when the shock absorbing member is a rubber pad 192, the rubber pad 192 is a double-layer rubber pad, and the rubber pad 192 is sleeved on the mounting seat 191 through the mounting groove 194. When the rubber pad is circular, the mounting groove 194 is also approximately circular.

The output top shaft 16 further comprises an abutting portion 18, and the abutting portion 18 is an extending part arranged at the front end (the end close to the refrigerator door body) of the output top shaft 16 or an extending part arranged on one side face of the output top shaft 16. When the abutting portion 18 is an extension member provided at the front end of the output top shaft 16, the extension member is a boss, and the boss is rectangular, square, circular, or the like. When the interference part 18 is an extension part arranged on one side surface of the output top shaft 16, the length of the extension part is longer than that of the main body of the output top shaft 16, so that the refrigerator door body can be opened through the extension part in the refrigerator door opening process. In order to prevent the output top shaft 16 from damaging the refrigerator door 202, the front end of the interference portion 18 is preferably provided in an arc shape. In one embodiment, the interference portion 18 is a rubber cap. When the front end (the end close to the refrigerator door body) of the output top shaft 16 is provided with the collision part 18, the size of the through hole 111 formed on the first casing 11 for the output top shaft 16 to move towards the refrigerator door body is similar to that of the collision part 18, so that the collision part 18 can move freely in the through hole 111.

In one embodiment, as shown in fig. 2, an elastic member 15 is disposed between the output top shaft 16 and the base 12. The end, far away from the refrigerator door body, of the output top shaft 16 further comprises an elastic member 15, and the elastic member 15 is sleeved on the periphery of the output top shaft 16, so that the elastic member 15 drives the output top shaft 16 to restore to an initial position after the solenoid is powered off. The power-off time of the solenoid can be controlled by receiving an automatic door closing instruction, arranging a touch key on the refrigerator or arranging a timer on the refrigerator, and the wireless power supply module 13 is powered off after the refrigerator is opened for a period of time.

In one embodiment, as shown in fig. 2, the automatic door opening device 100 for a refrigerator further includes a buffer 14, and the buffer 14 may be a compression spring, a bump sponge, a buffer air cushion, or the like. The buffer part 14 is located and keeps away from one side of the refrigerator door body, the buffer part 14 with the one end that the refrigerator door body was kept away from to output apical axis 16 is just to setting up, forms the buffer structure between output apical axis and the base to cushion the impulsive impact force when the output apical axis kick-backs, simultaneously, reduce the noise when the output apical axis kick-backs. After the solenoid is powered off, the elastic member 15 drives the output top shaft 16 to rebound, and when the output top shaft 16 collides with the buffer 14, the buffer 14 smoothes the motion of the output top shaft 16.

In one embodiment, as shown in fig. 3, the base 12 further includes a fixing seat 121, and the fixing seat 121 fixes the buffer 14 on the base 12 from different sides of the buffer 14. The fixing seat 121 is integrally formed or assembled with the base 12. The assembly forming comprises screw connection, clamping connection, bonding and the like. In an embodiment, the fixing seat 121 includes an open slot 122 for the buffer member 14 to be inserted into, and the shape of the open slot 122 is almost the same as the shape and size of the buffer member 14, so that the buffer member 14 is stably arranged in the open slot 122. When the buffer 14 is a compression spring, the open slot 122 is a nearly arched open slot 122. Two sides of the fixing seat 121 are recessed inwards to form a first groove 123 and a second groove 124, and different sides of the buffer 14 are abutted against the first groove 123 and the second groove 124 respectively. In order to ensure that the buffer member 14 cannot be easily ejected from the fixing seat 121, in an embodiment, when the buffer member 14 is a compression spring, the buffer member 14 is a conical coil spring, and a diameter of the compression spring decreases progressively along a moving direction of the output top shaft 16, that is, a diameter of the buffer member 14 decreases progressively along a direction toward the refrigerator door.

In one embodiment, the base includes a position sensor (not shown), and the output top shaft 16 is provided with a stop. The position sensor is positioned at a preset position of the base, and the preset position is used for indicating that the household appliance door body is opened by the output top shaft 16 when the stop piece on the output top shaft 16 reaches the preset position; when the baffle plate on the output top shaft 16 does not reach the preset position, it indicates that the household appliance door body is not opened.

The output top shaft 16 includes a pressure sensor (not shown), and the pressure sensor may be disposed at one end of the output top shaft 16, that is, at one end close to the household appliance door body. In one embodiment, the current pressure of the pressure sensor is obtained, when the pressure is 0, it indicates that the household appliance door body is opened, and if the pressure is not 0, that is, the household appliance door body is not opened. In another embodiment, the initial pressure of the pressure sensor is obtained, and when the output top shaft does not contact the household appliance door body, the pressure is 0. In a preferred embodiment, in the initial state, the output top shaft 16 contacts the household appliance door body but the contact force is small, so that the household appliance door body cannot be separated from the magnetic seal, and the initial pressure is not 0 but is small, and the value is between about 0N and 10N. The main control board 13 obtains the current pressure value of the pressure sensor after receiving the instruction to execute the automatic door opening action, if the current pressure is 0, the household appliance door body is opened, and the pressure is not 0 and is not opened. At this time, the obtained initial pressure value may be used to verify whether the initial position of the output jack shaft is proper, and if the initial pressure applied to the output jack shaft 16 reaches a value, it is prompted that the position of the output jack shaft 16 needs to be adjusted. The value specifically refers to the force with which the household appliance door body can be disengaged from the magnetic seal.

The main control board 13 provides a current with a specific value for the solenoid, and the household appliance door body is ejected out by the output top shaft 16 in the solenoid according to the electromagnetic effect. A thrust of a certain strength is generated in view of the current of a certain value. In one embodiment, when the output top shaft 16 includes a pressure sensor (not shown), after the electromagnetic induction module is triggered to start by acquiring the automatic door opening signal, the pressure sensor can sense the door opening force of the output top shaft 16 so as to know the magnitude of the door opening force of the automatic door opener, and when the door opening force is greater than 65N, the magnitude of the current is prompted to change; or the automatic door opening device is prompted to be out of order and needs to be detected and maintained. And when the door opening force is less than or equal to 65N, the automatic door opening device normally operates. In a preferred embodiment, the opening force is preferably 50N to ensure that the automatic door opener will not damage the equipment when a hard object is in front of the door during the activation process. The magnitude of the door opening force can be realized by controlling the magnitude of the current.

In one embodiment, a position sensor and a pressure sensor are included. A position sensor is arranged on the base, and a blocking piece matched with the position sensor is arranged on the output top shaft 16; the one end of output apical axis 16 is close to the end of the household electrical appliances door body promptly and still includes pressure sensor, pressure sensor is used for instructing the initial pressure that the output apical axis received, and when initial pressure surpassed a numerical value after, the suggestion user in time maintains or adjusts the initial position of output apical axis. The numerical value specifically refers to the force that the household appliance door body cannot be separated from the magnetic seal. The position sensor is used for indicating whether the blocking piece of the output top shaft reaches a specified position. The indicating position is used for indicating whether the household appliance door body is opened or not, namely the household appliance door body is opened by the output top shaft 16 when the output top shaft 16 reaches the indicating position.

Example two

As shown in fig. 1 to 6, a refrigerator, in one embodiment, a refrigerator 200, the refrigerator 200 includes a cabinet for forming a closed space in the refrigerator, a door body disposed at a front side of the refrigerator, and a magnetic gasket for maintaining the door body in a closed state. In addition, the refrigerator further comprises a wireless power supply module 13, and the wireless power supply module 13 is used for supplying power to the solenoid. The upper end of the refrigerator body is the top of the refrigerator, and the refrigerator body is provided with a door body which is arranged on the front side of the refrigerator body and is opened or closed, namely a refrigerator door body. The automatic door opening device 100 for the refrigerator is arranged in the refrigerator body and used for opening and closing the door body on the refrigerator body.

One end of the output top shaft 16 of the automatic door opening device 100 for a refrigerator corresponds to a door body of one side of the refrigerator. When the refrigerator is a single-door refrigerator, one end of the output top shaft 16 of the automatic door opener 100 is used for abutting against and opening a door body sucked on the refrigerator body, namely, the tail end of the output top shaft 16 corresponds to the door body of the refrigerator to open the door body under the action of electromagnetic induction. When the refrigerator is a double-door refrigerator, the automatic door opening device comprises two output top shafts 16, one end of each output top shaft 16 is used for abutting against and opening a door body sucked on the refrigerator body, namely, the tail ends of the output top shafts 16 respectively correspond to the door bodies on two sides of the refrigerator so as to open the door bodies on two sides of the refrigerator respectively under the action of electromagnetic induction.

The automatic door opening device 100 for the refrigerator is disposed at one side of the refrigerator body away from the door hinge of the refrigerator to abut against the side edge of the door body through the output top shaft 16. The automatic door opener can be arranged at the top of the refrigerator body or at the side of the refrigerator body.

As shown in fig. 1 to 6, in one embodiment, the automatic door opening device 100 for a refrigerator includes an electromagnetic induction module 17, wherein the electromagnetic induction module 17 is fixed in a refrigerator body; in one embodiment, the electromagnetic induction module 17 is partially embedded in a foaming layer in the refrigerator body, so that the volume occupied by the automatic door opener in the refrigerator body is reduced, and the electromagnetic induction module is not influenced to trigger the columnar push rod to move towards the refrigerator door body. The electromagnetic induction module 17 includes a solenoid, an output top shaft 16, and the solenoid is slidably connected to the output top shaft 16 so that the output top shaft 16 can slide in the solenoid. The wireless power supply module 13 supplies power to the solenoid, and the output top shaft 16 in the solenoid moves towards the refrigerator door body according to the electromagnetic effect so that the refrigerator door body is separated from magnetic sealing. In an embodiment, the automatic door opener for household appliances comprises two electromagnetic induction modules 17, wherein one end of an output top shaft 16 of each electromagnetic induction module 17 is respectively used for abutting against and opening a suction door on the box body, and the two electromagnetic induction modules are arranged to open the door bodies on two sides of the household appliances. In this case, the automatic door opener is applicable to the refrigerator that an area of two refrigerators that open door is the monofunctional, is about to automatic door opener sets up in the fresh-keeping district that opens door.

The wireless power supply module 13 is used for providing electric energy for the electromagnetic induction module, and compared with wired power supply, the wireless power supply module does not need to arrange cables, so that the refrigerator circuit is simplified, and meanwhile, the space of the refrigerator body is saved. As shown in fig. 6-8, the wireless power supply device includes a wireless transmitting module 132 and a wireless receiving module 131, the wireless transmitting module 132 is disposed outside the box body and can be connected to an external power source, and the wireless receiving module 131 is electrically connected to the electromagnetic induction module 17, so that the wireless receiving module 131 can rapidly supply power to the solenoid according to the signal of the wireless transmitting module. The outside of the wireless receiving module 131 is made of a flexible material, which is plastic. The wireless receiving module 131 and the wireless transmitting module 132 are plural. The wireless power supply module 13 supplies power to the electromagnetic induction module 17 according to the instruction received by the printed circuit board, and the wireless power supply module 13 powers off the electromagnetic induction module 17 according to the instruction received by the printed circuit board.

As shown in fig. 7-9, in one embodiment, wireless receiving module 132 and wireless transmitting module 131 are disposed adjacent to each other to ensure the efficiency of electromagnetic energy transmission. The distance between the wireless receiving module 132 and the wireless transmitting module 131 is 1-20 mm. The wireless transmitting module 131 comprises a transmitting coil 1323 and a printed circuit board 1322, and the plane of the wireless transmitting module transmitting coil 1323 is encapsulated by rubber 1324. The printed circuit board 1322 includes a power supply circuit, a high-frequency oscillation circuit, and a high-frequency power amplification circuit. The external power supply provides voltage, a high-frequency oscillation circuit in the printed circuit generates high-frequency alternating current, a high-frequency power amplification circuit amplifies the high-frequency current generated by the high-frequency oscillation circuit, and then the high-frequency current is sent out in the form of electromagnetic energy by the transmitting coil 1323. The wireless receiving module 131 includes a receiving coil 1313 and a printed circuit board 1312. The plane of the wireless receiving module receiving coil 1313 is encapsulated by rubber 1314, and the opposite surface of the receiving coil 1312 is encapsulated by a flexible material which is GPPS transparent plastic, namely a transparent piece 1315. The wireless transmitter module 131 and the wireless receiver module 132 are each provided with a magnetic core, preferably a pot-shaped magnetic core, and the magnetic core is preferably provided at the center of the coil. When a high frequency alternating current flows in the transmitter coil, an induced current is generated in the receiver coil 1313 by electromagnetic induction, thereby powering the solenoid.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way; the utility model can be smoothly implemented by the ordinary technicians in the industry according to the drawings and the above description; however, those skilled in the art should understand that changes, modifications and variations made by the above-described technology can be made without departing from the scope of the present invention, and all such changes, modifications and variations are equivalent embodiments of the present invention; meanwhile, any changes, modifications, evolutions, etc. of the above embodiments, which are equivalent to the actual techniques of the present invention, still belong to the protection scope of the technical solution of the present invention.

Claims (10)

1. An automatic door opening device for a refrigerator, comprising:

the electromagnetic induction module is fixed in the refrigerator body through a fixing structure and is positioned on one side far away from a refrigerator door hinge, and comprises a solenoid and an output top shaft, and the solenoid is connected with the output top shaft in a sliding manner;

the wireless receiving module is positioned on the electromagnetic induction module and is positioned on one side of the electromagnetic induction module, which is in contact with the refrigerator body;

the wireless receiving module is electrically connected with the electromagnetic induction module, so that after the electromagnetic induction module is powered by the wireless receiving module, the solenoid is powered on, and the output top shaft in the solenoid starts to move according to the electromagnetic effect, so that the output top shaft ejects out the household appliance door body and is separated from the magnetic seal.

2. The automatic door opening device for a refrigerator of claim 1, wherein the fixing structure comprises:

the refrigerator comprises a base, a door opening and a door opening, wherein the base is a shell extending along one direction, and one side of the base is fixed in the refrigerator body;

the electromagnetic induction module comprises a first shell buckled with the base, an installation space is formed between the base and the first shell, and the electromagnetic induction module is fixed in the installation space.

3. The automatic door opener according to claim 2, wherein the end of the output top shaft away from the door body further comprises an elastic member, and the elastic member is sleeved on the periphery of the output top shaft, so that the elastic member drives the output top shaft to return to an initial position after the solenoid is de-energized.

4. The automatic door opening device for a refrigerator as claimed in claim 2, further comprising at least two mounting seats on the base for providing support for the electromagnetic induction module.

5. The automatic door opener according to claim 3, further comprising a buffer member located at a side away from the household appliance door body to form a buffer structure between the output top shaft and the base after the solenoid is de-energized.

6. The automatic door opening device for a refrigerator as claimed in claim 5, further comprising fixing seats on the base, the fixing seats fixing the buffer to the base from different sides of the buffer.

7. The automatic door opening device for a refrigerator as claimed in claim 6, wherein the buffer is a compression spring, and the compression spring is a conical coil spring.

8. The automatic door opener according to claim 7, wherein the fixing base includes an open slot into which the buffer member is inserted, both sides of the open slot are recessed inward to form a first groove and a second groove, respectively, and different sides of the buffer member abut against the first groove and the second groove, respectively.

9. A refrigerator comprises a refrigerator body, a door body, a magnetic sealing gasket and a wireless power supply module, wherein the magnetic sealing gasket and the wireless power supply module are used for keeping the door body in a closed state; the refrigerator door opener is characterized in that the refrigerator body comprises the automatic door opener for the refrigerator according to any one of claims 1 to 8 and used for opening the door body sucked on the refrigerator body, and the wireless receiving module provides electric energy for the automatic door opener for the refrigerator.

10. The refrigerator according to claim 9, wherein the automatic door opener for a refrigerator comprises two electromagnetic induction modules, and one end of an output top shaft of each of the electromagnetic induction modules is respectively used for abutting against and opening a door body sucked on the refrigerator body.

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