CN109556345B - A kind of refrigerator - Google Patents
A kind of refrigerator Download PDFInfo
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- CN109556345B CN109556345B CN201811457088.4A CN201811457088A CN109556345B CN 109556345 B CN109556345 B CN 109556345B CN 201811457088 A CN201811457088 A CN 201811457088A CN 109556345 B CN109556345 B CN 109556345B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/02—Doors; Covers
Abstract
The invention discloses a refrigerator, relates to the technical field of refrigeration equipment, and aims to solve the problems that an arc-shaped chain rod protrudes out of a refrigerator body when a door is closed after a large-angle automatic door of the refrigerator in the prior art is opened, so that the refrigerator is not attractive and safe. The refrigerator, the power distribution box comprises a box body, the opening part of box is equipped with a body, the door body with be connected with switching door subassembly between the box, switching door subassembly includes arc ejector pin and drive assembly, the outer end of arc ejector pin with a body sliding connection, the inner stretches into in the box, the axis of rotation of arc ejector pin with the articulated shaft of the door body is parallel and not collinear, drive assembly can drive the arc ejector pin rotates around its axis of rotation, and works as when the arc ejector pin rotates first angle, can drive the rotatory second angle of the door body, just the second angle is greater than first angle. The invention can be used for automatically opening and closing the door of the refrigerator with a larger angle.
Description
Technical Field
The invention relates to the technical field of refrigeration equipment, in particular to a refrigerator.
Background
With social progress and scientific and technological development, the requirements of people on the quality of life are higher and higher, and the requirements of people on the refrigerator are higher and higher when the refrigerator is used as a common household appliance in life. In order to prevent cold air from leaking, the refrigerator usually uses a door seal to achieve a good sealing effect, but because the door seal has a large suction force and the refrigerator can form a certain negative pressure in the refrigerator body during refrigeration, the problem that the refrigerator door is difficult to open by a user is caused.
Some refrigerators capable of automatically opening doors appear in the market, and after the refrigerator doors are ejected by an ejection mechanism by a small angle (less than 30 degrees), the ejection mechanism automatically resets to an initial state, a user needs to continue to manually open the doors to normally take and place articles, and the user needs to manually close the doors after the articles are taken and placed.
In order to solve the problem, a device that can realize refrigerator automatic switch door is provided in prior art CN107421222A, including arc chain pole, the driving gear, driven gear and motor, arc chain pole inboard is equipped with a plurality of internal teeth, arc chain pole one end is fixed on the door body, the other end extends to in the cavity that holds at box top, the driving gear, the internal tooth of driven gear and arc chain pole meshes in proper order mutually, the driving gear is installed on the output shaft of motor, it rotates to drive the driving gear through the motor, thereby it is rotatory to drive driven gear, it rotates to drive arc chain pole by driven gear, arc chain pole rotates the automatic door or the door that opens of the pulling door body realization door body. The device provided by the prior art can only open the refrigerator door to 90 degrees at most, and once the angle is exceeded, the arc-shaped chain rod can protrude out of the refrigerator body when the door is closed, so that the device is not attractive and safe. But can set up the supporter and can set up the drawer in the refrigerator door inboard of the refrigerator door body usually, even the refrigerator door is opened 90, get to the supporter and put article and push and pull the drawer still very inconvenient, so this kind of refrigerator can not satisfy user's daily demand yet.
Disclosure of Invention
The embodiment of the invention provides a refrigerator, and aims to solve the problems that an arc-shaped chain rod protrudes out of a refrigerator body when a door is closed after a large-angle automatic door is opened, so that the refrigerator is not attractive and safe.
In order to achieve the above purpose, an embodiment of the present invention provides a refrigerator, which includes a box body, wherein a door body is arranged at an opening of the box body, a door opening and closing assembly is connected between the door body and the box body, the door opening and closing assembly includes an arc-shaped ejector rod and a driving assembly, an outer end of the arc-shaped ejector rod is slidably connected with the door body, an inner end of the arc-shaped ejector rod extends into the box body, a rotation axis of the arc-shaped ejector rod is parallel to and not collinear with a hinge axis of the door body, the driving assembly can drive the arc-shaped ejector rod to rotate around the rotation axis of the arc-shaped ejector rod, and when the arc-shaped ejector rod rotates at a first angle, the door body.
According to the refrigerator provided by the embodiment of the invention, the door body is driven to rotate through the rotation of the arc-shaped ejector rod, the rotating shaft of the arc-shaped ejector rod and the hinge shaft of the door body are parallel and not collinear, namely the rotating track of the arc-shaped ejector rod is different from that of the door body; in order to coordinate the difference of the rotation tracks of the arc-shaped ejector rod and the door body, the outer end of the arc-shaped ejector rod is connected with the door body in a sliding mode, and when the arc-shaped ejector rod drives the door body to rotate by a large angle, the arc-shaped ejector rod rotates by a small angle.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention;
FIG. 2 is a top view of a refrigerator according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of the refrigerator door opening according to the embodiment of the invention;
FIG. 4 is a schematic structural diagram of an arc-shaped push rod in a refrigerator according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of an arc-shaped push rod in the refrigerator according to the embodiment of the present invention;
FIG. 6 is a sectional view of an arc-shaped push rod in the refrigerator according to the embodiment of the present invention;
fig. 7 is a schematic structural view of a door opening and closing assembly in a refrigerator according to an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention in an automatic door opening and closing scheme;
FIG. 9 is a schematic structural diagram of a refrigerator according to an embodiment of the present invention in a manual door opening and closing scheme;
FIG. 10 is a schematic structural view of a refrigerator according to an embodiment of the present invention when a door body is closed in a semi-automatic door opening and closing scheme;
FIG. 11 is a schematic structural view of the refrigerator according to the embodiment of the present invention when the door body is opened in the semi-automatic door opening and closing scheme;
FIG. 12 is a graph showing a process of calculating the axis of the rotating shaft of the arc-shaped push rod in the refrigerator according to the embodiment of the present invention;
fig. 13 is a schematic diagram of the movement tracks of the arc-shaped ejector rod and the door body in the refrigerator according to the embodiment of the 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 "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 2, an embodiment of the present invention provides a refrigerator, including a refrigerator body 100, a door body 200 is disposed at an opening of the refrigerator body 100, a door opening and closing assembly is connected between the door body 200 and the refrigerator body 100, the door opening and closing assembly includes an arc-shaped push rod 300 and a driving assembly 400, referring to fig. 7, an outer end 310 of the arc-shaped push rod is slidably connected to the door body 200, an inner end 320 of the arc-shaped push rod extends into the refrigerator body 100, a rotation axis 330 of the arc-shaped push rod is parallel to and non-collinear with a hinge axis 210 of the door body, the driving assembly 400 can drive the arc-shaped push rod 300 to rotate around the rotation axis 330 thereof, and when the arc-shaped push rod 300 rotates a first angle, the door body 200 can be driven to rotate a second.
According to the refrigerator provided by the embodiment of the invention, the door body 200 is driven to rotate by the rotation of the arc-shaped ejector rod 300, the rotating shaft 330 of the arc-shaped ejector rod and the hinge shaft 210 of the door body are parallel and not collinear, namely the rotating track of the arc-shaped ejector rod 300 is different from that of the door body 200; in order to coordinate the difference of the rotation tracks of the door body 200 and the arc push rod, the outer end 310 of the arc push rod is connected with the door body 200 in a sliding manner, and when the arc push rod 300 drives the door body 200 to rotate by a larger angle, the arc push rod 300 rotates by a smaller angle, so that the arc push rod 300 can be manufactured to have a shorter length than the prior art, and the arc push rod 300 does not extend out of the refrigerator body 100 after the door body 200 is closed and when the arc push rod 300 is completely retracted, thereby facilitating the user to take and place objects from the refrigerator and having the beauty and safety of the product.
In order to accurately control the rotation angle of the door body 200, the rotation angle of the arc-shaped push rod 300 is controlled by adopting a gear transmission manner, that is, the driving assembly 400 comprises a motor 410 and a transmission gear 420, as shown in fig. 7, an output shaft, namely a motor shaft 411, of the motor 410 is connected with the transmission gear 420, and torque can be transmitted between the output shaft, namely the motor shaft 411, of the motor 410 and the transmission gear 420; correspondingly, the arc-shaped push rod 300 is distributed with transmission teeth 340 along the extending direction thereof, and the transmission teeth 340 of the arc-shaped push rod 300 are meshed with the transmission gear 420. Because the gear transmission has the advantages of high precision and high efficiency, the rotation angle of the arc-shaped ejector rod 300 can be accurately and efficiently controlled, and the rotation angle of the door body 200 can be accurately controlled; the gear transmission structure is compact, so that the space of the refrigerator with various parts can be saved; above all, the gear transmission works reliably and has long service life, and the failure rate of the refrigerator can be correspondingly reduced.
Preferably, as shown in fig. 7, in order to adjust the transmission ratio, the transmission gear 420 may be provided in plurality, a plurality of transmission gears 420 are sequentially engaged to form a gear set, the motor 410 is connected to the transmission gear 420 at the input end of the gear set, and the transmission gear 340 of the arc-shaped push rod 300 is engaged to the transmission gear 420 at the output end of the gear set. Because the radial dimension of motor shaft 411 is generally less to motor shaft 411's rotational speed is very fast, so can adjust the drive ratio through setting up the gear train, and then adjust motor shaft 411 and reach the slew velocity of arc ejector pin 300 through layer upon layer transmission gear 420 transmission, finally adjusted door body 200 rotational speed to this provides a suitable switch door speed for the user, improves user experience.
The working process of automatically opening and closing the door of the refrigerator provided by the embodiment of the invention specifically comprises the following steps: referring to fig. 1, when the refrigerator receives a door opening signal, the motor 410 drives the transmission gear 420 to rotate, the transmission gear 420 drives the arc push rod 300 to rotate around the rotation axis of the arc push rod 300, the arc push rod 300 gradually extends out of the refrigerator body 100, and the door body 200 rotates around the hinge shaft 210 under the acting force of the arc push rod 300 to gradually open; meanwhile, as the rotating shaft of the arc-shaped ejector rod 300 is parallel to and not collinear with the hinge shaft 210 of the door body 200, namely the moving tracks of the two are different, the arc-shaped ejector rod 300 slides on the door body 200 and leaves the initial position along with the change of the opening angle of the door body 200; after the door body 200 is opened to a set angle, referring to fig. 3, the motor 410 stops working, and then the transmission gear 420 and the arc-shaped push rod 300 stop moving, and at this time, a user accesses articles from the refrigerator; when the refrigerator receives a door closing signal, the motor 410 drives the transmission gear 420 to rotate in the reverse direction, the transmission gear 420 drives the arc-shaped push rod 300 to rotate around the rotating shaft 330 of the arc-shaped push rod, the arc-shaped push rod 300 retracts into the refrigerator body 100 gradually, the arc-shaped push rod 300 slides on the door body 200 and returns to the initial position, and the door body 200 rotates around the hinge shaft 210 to be completely closed under the acting force of the arc-shaped push rod 300.
In order to ensure that the arc-shaped push rod 300 rotates by the first angle, the door body 200 can be driven to rotate by a second angle, and the second angle is larger than the first angle, that is, the position of the rotating shaft 330 of the arc-shaped push rod is different from the position of the hinge shaft 210 of the door body. The position of the rotating shaft 330 of the arc-shaped push rod can be set in many ways, the outer end 310 of the arc-shaped push rod is taken as the reference point when the arc-shaped push rod 300 moves, and the initial contact point between the unopened door body 200 and the outer end 310 of the arc-shaped push rod is taken as the reference point when the door body 200 moves, as shown in fig. 13, where S is1Is a motion track curve, S, of the outer end 310 of the arc-shaped ejector rod2For the motion trajectory curve of the initial contact point, it can be seen that in the opening and closing process of the door body 200, the motion trajectories of the outer end 310 of the arc-shaped ejector rod and the initial contact point are different, when the door body 200 is closed, the outer end 310 of the arc-shaped ejector rod is overlapped with the initial contact point, and in the opening process of the door body 200, the outer end 31 of the arc-shaped ejector rod gradually slides towards the direction close to the hinge shaft 210, so that the motion trajectories of the outer end 310 of the arc-shaped ejector rod and the initial contact point are different; due to the difference of the movement trajectories, when the door body 200 is opened at a certain angle, the rotation angle of the arc-shaped top rod 300 is smaller, and the rotation angle of the door body 200 is larger, so that the arc-shaped top rod 300 is ensured not to extend out of the box body 100 when being retracted. In addition, an algorithm of the axis of the rotating shaft 330 of the arc-shaped push rod is provided in one implementation manner, and the specific calculation process is as follows: for convenience of calculation, the opening angle of the door 200 is 0 ° to 135 °. When the opening angle of the door body 200 is 0 degrees, a coordinate system is established when the outer end 310 of the arc-shaped ejector rod is positioned at the edge of the box body 100, referring to fig. 12, the inner edge of the door body 200 is set as an X axis, and the side edge of the box body 100 is set as a Y axis; the coordinates of the inner end 320 of the arc-shaped ejector rod are (0, y1), the coordinates of the outer end are (x1, 0), and the coordinates of the axis of the rotating shaft 330 are (x, y); when the opening angle of the door body 200 is 135 degrees, the inner end 320 of the arc-shaped ejector rod rotates to the edge of the box body 100, namely the limit position, the coordinates of the inner end 320 are (x1, 0), and the coordinates of the outer end 310 are (-27, -110). The following equations can be listed according to the trigonometric function relationship and the motion relationship of the arc-shaped mandril 300:
x2+(y1-y)2＝(x+27)2+(y+110)2
x2+(y1-y)2＝(x1-x)2+y2
x12+y12＝(x1+27)2+1102
the limit position of the axis of the rotating shaft 330 of the arc-shaped ejector rod can be obtained by the four quadric-quadratic equations, and a proper axis position is selected according to the limit position.
It can be known through calculation that when the door body 200 is opened to 135 degrees, the arc-shaped push rod 300 rotates by 109 degrees.
In fact, in the process of automatically opening and closing the door of the refrigerator, a user sometimes abandons the function of automatically opening and closing the door or encounters power failure, and at this time, the refrigerator is required to be switched between two schemes of automatically opening and closing the door and manually opening and closing the door so as to deal with different situations in the use process. Referring to fig. 8, in order to solve the above problem, a retractable transmission key 412 is arranged in the motor shaft 411, a key slot 422 is arranged in a central hole 421 of the transmission gear 420, the key slot 422 corresponds to the transmission key 412, the transmission key 412 is connected with a control device 600, and the control device 600 can drive the transmission key 412 to extend out of the motor shaft 411 or retract into the motor shaft 411 along the radial direction of the motor shaft 411. A user can realize the connection or disconnection of the motor 410 and the transmission gear 420 by controlling the matching or separation of the transmission key 412 and the key slot 422, specifically, when the transmission key 412 extends out, the transmission key 412 is matched with the key slot 422, the motor 410 is connected with the transmission gear 420, that is, the arc-shaped push rod 300 is indirectly controlled by the motor 410 to rotate, because the motor 410 and the transmission gear 420 are in a dead-locking state, the door body 200 cannot be opened or closed by manpower or the door body cannot be opened or closed in a reverse direction; referring to fig. 9, when the driving key 412 is retracted, the driving key 412 is separated from the key groove 422, the motor 410 is disconnected from the driving gear 420, that is, the driving gear 420 is not controlled by the motor 410, and accordingly, the arc-shaped push rod 300 is also in a free state, and the door body 200 can be opened and closed manually. Further, the control device 600 includes an electromagnet 610 and a spring 620, a mounting groove 413 is formed in the motor shaft 411, the transmission key 412 and the spring 620 are disposed in the mounting groove 413, the spring 620 is connected with the transmission key 412, when the electromagnet 610 is powered off, the transmission key 412 is pulled by the elastic force of the spring 620 to be retracted into the mounting groove 413 of the motor shaft 411, and when the electromagnet 610 is powered on, the magnetic force of the electromagnet 610 can overcome the elastic force of the spring 620 and drive the transmission key 412 to extend out of the motor shaft. In this way, in a normal state, the driving button 412 is retracted into the mounting groove 413, i.e. the default is to manually open and close the door; when the user controls the electromagnet 610, the electromagnet 610 causes the spring 620 to extend the drive key 412 into the keyway 422, which in turn switches to an automatic door opening and closing scheme.
In order to enable the arc-shaped ejector rod 300 to drive the door body 200 to rotate by the maximum angle at the minimum angle to the maximum degree, the door body 200 is provided with a sliding groove 220 along the width direction thereof, as shown in fig. 3, and the outer end 310 of the arc-shaped ejector rod can slide along a fixed track due to the arrangement of the sliding groove 220, so that the arc-shaped ejector rod 300 rotates stably, the outer end 310 of the arc-shaped ejector rod is further provided with a sliding block 500, and the sliding block 500 is in sliding fit with the sliding groove 220. In order to stabilize the rotation process of the arc-shaped push rod 300, a mounting seat 110 may be further provided in the box body 100 in a matching manner, as shown in fig. 7, the switching door assembly is fixed on the mounting seat 110; preferably, the door opening and closing assembly may further share the hinge cover 120 with the hinge shaft 210, as shown in fig. 2, the hinge cover 120 covers the hinge shaft 210 and the door opening and closing assembly, so that it does not leak, reduces dust falling or water inflow, improves product safety, and prolongs product service life.
In addition, in order to provide a force application point for the sliding block 500 when the door is closed, so that the sliding block 500 can pull the door body 200 to close, the notch of the sliding groove 220 is provided with a stop flange 221, referring to fig. 6, when the door body 200 is opened under the action of the door opening and closing assembly, actually, the outer end 310 of the arc-shaped ejector rod pushes the surface a in the sliding groove 220 to drive the door body 200 to rotate to open; when the door body 200 is closed under the effect of the door opening and closing assembly, actually, the outer end 310 of the arc-shaped push rod pulls the B surface in the stopping flange 221 at the notch of the sliding chute 220 to drive the door body 200 to rotate and close. The two ends of the notch of the sliding groove 220 can be provided with stopping parts, so that when the door body 200 is opened to the maximum angle or closed, the arc-shaped push rod 300 reaches the limit position, and the sliding block 500 cannot fall off from the sliding groove 220, thereby ensuring the reliability of the automatic door opening and closing device. Preferably, the sliding groove 220 may be a C-shaped groove, and the slider 500 may be a T-shaped slider.
It is understood that, in order to reduce friction, as shown in fig. 4 and 5, the slider 500 is provided with a rotatable roller 510, and the roller 510 is in rolling contact with the chute 220. For rolling contact, compared with sliding contact, friction is greatly reduced, product loss is reduced, and the service life of the product is further prolonged. More preferably, the roller 510 may be an I-shaped roller 510, i.e., the roller 510 has two ends that are larger and the middle that is smaller, so that the middle of the roller 510 can be fixed on the slider 500 by the fixing member 520 without increasing the width of the slider 500.
Referring to fig. 7, the driving gear 340 may be distributed on an outer side wall of the arc push rod 300, and accordingly, the motor 410 and the driving gear 420 are disposed on an outer side of the arc push rod 300. Thus, the opening and closing door assembly can be uniformly distributed on the box body 100, and a certain part of the box body 100 is not subjected to too heavy load.
It can be understood that the refrigerator can also have the scheme of semi-automatic switch door, and the concrete implementation mode is, arc ejector pin 300 includes first section 350 and second section 360, the lateral wall of first section 350 of arc ejector pin 300 is provided with driving tooth 340, the lateral wall of second section 360 of arc ejector pin 300 does not set up driving tooth 340, and the radius of the lateral wall of second section 360 of arc ejector pin 300 is less than or equal to the radius of the root circle of driving tooth 340, so, play the effect of dodging to drive gear 420, prevent with drive gear 420 contact friction. The working principle of the scheme of semi-automatic door opening and closing is as follows: referring to fig. 10, when the refrigerator receives a door opening signal, the motor 410 drives the transmission gear 420 to rotate, the transmission gear 420 is engaged with the transmission gear 340 of the arc push rod 300, the transmission gear 420 drives the arc push rod 300 to rotate around the rotation axis 330 of the arc push rod, the arc push rod 300 gradually extends out of the refrigerator body 100, and referring to fig. 11, the door body 200 is gradually opened by rotating around the hinge shaft 210 under the acting force of the arc push rod 300; the transmission gear 420 and the arc-shaped push rod 300 continue to rotate, and when the transmission gear 420 and the arc-shaped push rod 300 run through the outer side wall of the first section 350 of the arc-shaped push rod with the transmission teeth 340 in a matching manner, the door body 200 is opened to a certain angle, which is generally a small angle; and then reaches the outer side wall of the second section 360 of the arc-shaped ejector rod, and the outer side wall of the second section 360 of the arc-shaped ejector rod is not provided with the transmission gear 340, so that the arc-shaped ejector rod 300 is disengaged from the transmission gear 420, and at the moment, a user needs to manually open the arc-shaped ejector rod to a required angle. When a user finishes taking and placing articles in the refrigerator, the user is required to receive a small angle for closing the door body 200 to be opened initially, namely after the arc-shaped push rod 300 is meshed with the transmission gear 420, the refrigerator receives a door closing signal, the motor 410 drives the transmission gear 420 to rotate in the reverse direction, the transmission gear 420 drives the arc-shaped push rod 300 to rotate around the circle center of the arc-shaped push rod 300, the arc-shaped push rod 300 gradually retracts into the refrigerator body 100, and the door body 200 rotates around the hinge shaft 210 to be closed completely under the acting force of the arc-shaped push rod 300. The scheme solves the problems that the door is hard to open for the first time and the small-angle door is not tight due to the suction force of the door seal and the negative pressure in the refrigerator body 100.
The driving gear 340 may also be distributed on the inner sidewall of the arc-shaped push rod 300, and accordingly, the motor 410 and the driving gear 420 are both disposed on the inner side of the arc-shaped push rod 300.
In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (8)
1. A refrigerator is characterized by comprising a refrigerator body, wherein a door body is arranged at an opening of the refrigerator body, a switch door assembly is connected between the door body and the refrigerator body, the switch door assembly comprises an arc-shaped ejector rod and a driving assembly, the outer end of the arc-shaped ejector rod is connected with the door body in a sliding mode, the inner end of the arc-shaped ejector rod extends into the refrigerator body, a rotating shaft of the arc-shaped ejector rod is parallel to and not collinear with a hinged shaft of the door body, the driving assembly can drive the arc-shaped ejector rod to rotate around the rotating shaft of the arc-shaped ejector rod, and when the arc-shaped ejector rod rotates for a first angle, the door body can be driven to rotate for a;
the driving assembly comprises a motor and a transmission gear, a motor shaft of the motor is connected with the transmission gear, torque can be transmitted between the motor shaft of the motor and the transmission gear, and the transmission gear is meshed with the transmission gear of the arc ejector rod;
the motor shaft is internally provided with a telescopic transmission key, a key groove is arranged in a center hole of the transmission gear, the key groove corresponds to the transmission key in position, the transmission key is connected with a control device, the control device can drive the transmission key to radially extend out of the motor shaft or retract into the motor shaft, when the transmission key extends out, the transmission key is matched with the key groove, and when the transmission key retracts, the transmission key is separated from the key groove.
2. The refrigerator as claimed in claim 1, wherein the number of the transmission gears is plural, the plural transmission gears are sequentially engaged to form a gear set, the motor is connected to the transmission gear at the input end of the gear set, and the transmission gear of the arc-shaped push rod is engaged with the transmission gear at the output end of the gear set.
3. The refrigerator as claimed in claim 1, wherein the control device includes an electromagnet and a spring, a mounting groove is formed in the motor shaft, the transmission key and the spring are disposed in the mounting groove, the spring is connected to the transmission key, when the electromagnet is powered off, the transmission key is pulled by an elastic force of the spring to be retracted into the mounting groove, and when the electromagnet is powered on, a magnetic force of the electromagnet can overcome the elastic force of the spring and drive the transmission key to extend out of the motor shaft.
4. The refrigerator according to any one of claims 1 to 3, wherein the door body is provided with a sliding groove along a width direction thereof, and a sliding block is arranged at an outer end of the arc-shaped ejector rod and is in sliding fit with the sliding groove.
5. The refrigerator as claimed in claim 4, wherein a stopping flange is provided at the notch of the sliding groove, and the stopping flange can prevent the sliding block from sliding out of the notch.
6. The refrigerator as claimed in claim 4, wherein the slider is provided with a rotatable roller, and the roller is in rolling contact with the chute.
7. The refrigerator as claimed in any one of claims 1 to 3, wherein the driving teeth are distributed on an outer side wall of the arc-shaped push rod.
8. The refrigerator according to claim 7, wherein the arc push rod comprises a first section and a second section, the outer sidewall of the first section of the arc push rod is provided with the transmission gear, the outer sidewall of the second section of the arc push rod is not provided with the transmission gear, and the radius of the outer sidewall of the second section of the arc push rod is smaller than or equal to the radius of the root circle of the transmission gear.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811457088.4A CN109556345B (en) | 2018-11-30 | 2018-11-30 | A kind of refrigerator |
| PCT/CN2019/113862 WO2020108205A1 (en) | 2018-11-30 | 2019-10-29 | Refrigerator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811457088.4A CN109556345B (en) | 2018-11-30 | 2018-11-30 | A kind of refrigerator |
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| Publication Number | Publication Date |
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| CN109556345A CN109556345A (en) | 2019-04-02 |
| CN109556345B true CN109556345B (en) | 2020-08-11 |
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| CN201811457088.4A Active CN109556345B (en) | 2018-11-30 | 2018-11-30 | A kind of refrigerator |
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| WO (1) | WO2020108205A1 (en) |
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| CN109556345B (en) * | 2018-11-30 | 2020-08-11 | 海信（山东）冰箱有限公司 | A kind of refrigerator |
| CN112212595B (en) * | 2019-07-12 | 2022-02-01 | 海信（山东）冰箱有限公司 | A kind of refrigerator |
| CN116624051A (en) * | 2022-02-14 | 2023-08-22 | 合肥美的电冰箱有限公司 | Door opening and closing device and electrical equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100675795B1 (en) * | 2004-11-05 | 2007-02-02 | 삼성전자주식회사 | A side-by-side type refrigerator and door opening method for the side-by-side type refrigerator |
| JP4249199B2 (en) * | 2006-03-23 | 2009-04-02 | シャープ株式会社 | Door self-closing device |
| KR101443639B1 (en) * | 2008-08-20 | 2014-09-23 | 엘지전자 주식회사 | Dispenser of refrigerator and refrigerator having the same |
| CN103470132A (en) * | 2013-10-10 | 2013-12-25 | 新疆农业科学院农业机械化研究所 | Greenhouse with windows opened electrically |
| CN203640480U (en) * | 2013-12-06 | 2014-06-11 | 镇江市高等专科学校 | Remote control automobile trunk door opening and closing device |
| CN203669599U (en) * | 2013-12-25 | 2014-06-25 | 宁波海韦斯智能技术有限公司 | Electric window opener used for side-hung door window |
| EP4083549A1 (en) * | 2015-04-27 | 2022-11-02 | LG Electronics Inc. | Refrigerator and method for opening a refrigerator door |
| CN107421222A (en) * | 2017-06-08 | 2017-12-01 | 合肥美菱股份有限公司 | A kind of device that can realize refrigerator automatic opening and closing door |
| CN206771864U (en) * | 2017-06-08 | 2017-12-19 | 合肥美菱股份有限公司 | A kind of device that can realize refrigerator automatic opening and closing door |
| CN107367117A (en) * | 2017-06-08 | 2017-11-21 | 合肥美菱股份有限公司 | A kind of device that can realize refrigerator automatic opening and closing door |
| CN109556345B (en) * | 2018-11-30 | 2020-08-11 | 海信（山东）冰箱有限公司 | A kind of refrigerator |
| CN109373689B (en) * | 2018-11-30 | 2021-02-02 | 海信（山东）冰箱有限公司 | Refrigerator capable of automatically opening and closing door |
-
2018
- 2018-11-30 CN CN201811457088.4A patent/CN109556345B/en active Active
-
2019
- 2019-10-29 WO PCT/CN2019/113862 patent/WO2020108205A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CN109556345A (en) | 2019-04-02 |
| WO2020108205A1 (en) | 2020-06-04 |
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