CN114136040B - Refrigerator with a refrigerator body - Google Patents

Abstract

The invention discloses a refrigerator, comprising: a case; a first door body and a second door body; the turnover beam is rotationally arranged on the first door body, and the guide mechanism guides the turnover beam to rotate between an unfolding position and a folding position in the opening and closing process of the first door body; a locking mechanism, comprising: the locking part is fixedly arranged on the first door body; the linkage piece is movably arranged on the turnover beam, and is positioned at an unlocking position separated from the locking part in the opening and closing process of the first door body so as to allow the turnover beam to rotate; when the first door body is in an open state, the linkage piece is positioned at a locking position matched with the locking part so as to lock the turnover beam at the folding position; the driving assembly comprises a first driving part fixedly arranged on the turnover beam and a second driving part arranged on the linkage piece, and the first driving part and the second driving part interact to drive the linkage piece to move between the unlocking position and the locking position.

Description

Refrigerator with a refrigerator body

Technical Field

The invention relates to a refrigerator, in particular to a refrigerator with a turnover beam, and belongs to the technical field of household appliances.

Background

With the improvement of the living standard of people, the refrigerator becomes an indispensable household appliance in daily life of people. Especially in hot summer, in order to slow down the propagation of bacteria and fungi in food, and avoid the spoilage of food, the food is usually placed in a refrigerator for low-temperature storage.

In order to ensure that the cold energy loss occurs at the gap between two door bodies of the existing multi-door refrigerator, a common solution is to arrange a turnover beam on one of the door bodies, such as a turnover beam disclosed in CN202188717U chinese patent and a turnover vertical beam disclosed in CN101135531a chinese patent. In particular, such a roll-over beam is rotatably fitted inside one of two adjacent door bodies, and is rotatable between a deployed position and a stowed position as the door body is opened and closed: that is, when the door body is opened, the turnover beam rotates to the retracted position, so that the opening and closing of the door body are not affected; when the door body is closed, the turnover beam rotates to the unfolding position, so that a gap between the two door bodies is closed, and the leakage of cold in a compartment inside the refrigerator from the gap between the two door bodies is avoided.

However, in the use process of the existing turnover beam, when the door body loaded with the turnover beam is opened, rebound is often caused by too fast rotation or the door body is turned manually, so that the folding position of the turnover Liang Congben is erroneously turned to the unfolding position, and therefore the turnover beam collides with another door body or a box body when the door body is closed, and the problems of structural damage, door closing incapability and the like are caused.

Although some solutions are provided for the problems in the existing refrigerators, the solutions often cause new technical problems of overlarge resistance when the door body is closed, overlarge rotation resistance of the turnover beam when the door body is closed, cold leakage caused by the fact that the turnover beam is not turned in place, and the like.

Disclosure of Invention

The invention aims to provide a refrigerator with a turnover beam, which solves the problem that the turnover beam is easy to manually turn over when a door body is in an open state.

In order to achieve the above object, an embodiment provides a refrigerator including:

the box body comprises a main body defining a compartment and a first guide part arranged on the main body;

a first door body and a second door body for opening and closing the compartment;

the turnover beam is rotationally arranged on the first door body and comprises a second guide part, and the second guide part is matched with the first guide part to guide the turnover beam to rotate between an unfolding position and a folding position in the opening and closing process of the first door body; the refrigerator also includes a locking mechanism, the locking mechanism includes:

The locking part is fixedly arranged on the first door body;

the linkage piece is movably arranged on the turnover beam, and when the first guide part is movably matched with the second guide part, the linkage piece is positioned at an unlocking position separated from the locking part so as to allow the turnover beam to rotate; when the first guide part and the second guide part are separated, the linkage piece is positioned at a locking position matched with the locking part, so that the turnover beam is locked at the folding position;

the driving assembly comprises a first driving part fixedly arranged on the turnover beam and a second driving part arranged on the linkage piece, and the first driving part and the second driving part interact to drive the linkage piece to move between the unlocking position and the locking position.

As a further improvement of an embodiment of the present invention, one of the first driving part and the second driving part is provided as an electromagnet, and the other is provided as a ferromagnetic member that cooperates with the electromagnet; the electromagnet is controlled to be in a first mode or a second mode.

As a further improvement of an embodiment of the present invention, one of the first guide portion and the second guide portion is a guide groove and the other is a guide protrusion;

When the first door body is in a closed state, the initial part of the guide protrusion stops at the tail end of the guide groove;

the guide protrusion moves in the guide groove to guide the turnover beam to rotate when the first door body is in the opening and closing process;

when the first door body is in an open state, the starting part is separated from the opening end of the guide groove.

As a further improvement of an embodiment of the present invention, one of the first mode and the second mode is that the electromagnet is electrified and magnetized, and the other is that the electromagnet is powered off and demagnetized;

when the electromagnet is electrified and magnetized, the electromagnet is matched with the ferromagnetic piece through magnetic force so as to drive the linkage piece to move along a first direction;

when the electromagnet is powered off and demagnetized, the linkage piece moves along the opposite direction of the first direction under the action of gravity or the elastic restoring force of the elastic piece;

the elastic piece is arranged between the linkage piece and the turnover beam.

As a further improvement of an embodiment of the present invention, the linking member moves between the unlocking position and the locking position along the first direction, and the turnover beam extends lengthwise along the first direction and rotates around an axis along the first direction relative to the first door body;

One of the electromagnet and the ferromagnetic piece is fixedly arranged on the linkage piece, and the other one of the electromagnet and the ferromagnetic piece is arranged on the second guide part, and the electromagnet and the ferromagnetic piece are opposite to each other in the first direction.

As a further improvement of an embodiment of the present invention, the second guiding portion is the guiding protrusion fixedly arranged at one longitudinal end of the turnover beam, and the electromagnet is movably arranged in the hollow cavity of the starting portion and is shielded by the guiding protrusion; the ferromagnetic piece is fixedly arranged at the starting part.

As a further improvement of an embodiment of the present invention, one of the first mode and the second mode is that the electromagnet is electrified to generate magnetism under a forward current, and the other is that the electromagnet is electrified to generate magnetism under a reverse current;

when the electromagnet is electrified and magnetized under forward current, the electromagnet is matched with the ferromagnetic piece through a first magnetic force so as to drive the linkage piece to move forward;

when the electromagnet is electrified and magnetically generated under reverse current, the electromagnet is matched with the ferromagnetic piece through second magnetic force so as to drive the linkage piece to move reversely;

wherein one of the first magnetic force and the second magnetic force is a magnetic attractive force and the other is a magnetic repulsive force, the forward direction and the reverse direction being opposite.

As a further improvement of an embodiment of the present invention, the number of the ferromagnetic pieces is two and the two ferromagnetic pieces are homopolar and relatively fixed to the turnover beam; the electromagnet is fixedly arranged between the two ferromagnetic pieces and is respectively matched with the two ferromagnetic pieces by different magnetic forces when the electromagnet is electrified and magnetized.

As a further improvement of an embodiment of the present invention, the turnover beam extends lengthwise in a first direction and rotates around an axis along the first direction relative to the first door body, and the forward direction and the reverse direction are perpendicular to the first direction;

one of the ferromagnetic pieces, the electromagnet and the other ferromagnetic piece are sequentially arranged in the forward direction.

As a further improvement of an embodiment of the present invention, when the first door body is in the closed state, the interlocking member is located at a locking position matched with the locking portion, so that the turnover beam is locked at the unfolding position.

As a further improvement of an embodiment of the present invention, the refrigerator further includes:

a sensing device for sensing a status signal of the first door body;

the control device is connected with the sensing device and the driving component and controls the driving component to be in the first mode or the second mode according to the received state signal.

As a further improvement of an embodiment of the present invention, the sensing device is configured to: sensing a door closing state signal, a door opening action signal, a door closing action signal and a door opening state signal of the first door body;

the control device is configured to: controlling the driving assembly to be in a second mode according to the received door closing state signal; controlling the driving assembly to be in a first mode according to the received door opening action signal; controlling the driving assembly to be in a second mode according to the received door opening state signal; and controlling the driving assembly to be in a first mode according to the received door closing action signal.

As a further improvement of an embodiment of the present invention, the turnover beam is rotatably coupled to the first door body by a hinge mechanism around an axis in the first direction;

the hinge mechanism comprises a matching shaft fixedly connected with the first door body and a hinge shaft fixedly connected with the turnover beam, and the matching shaft and the hinge shaft are rotationally matched and connected around the axis;

the locking part is formed on the matching shaft and is arranged as a slot or a bulge which is arranged around the axis, and the linkage piece is provided with a plug-in part which is matched with the locking part;

When the turnover beam is in the folding position and the unfolding position, the inserting part and the locking part are in position correspondence on the circumference of the axis so as to be in inserting fit; when the turnover beam is positioned between the folding position and the unfolding position, the inserting part and the locking part are arranged in a staggered mode on the circumference of the axis.

As a further improvement of an embodiment of the present invention, the linkage member is provided in a rod structure, one end of the linkage member is assembled and connected with the second driving part or is integrally injection-molded with the second driving part, and the other end of the linkage member can be matched with or disengaged from the locking part;

the refrigerator further comprises a buffer pad, and the buffer pad is clamped between the rod structure and the turnover beam when the linkage piece moves to the locking position or the unlocking position.

Compared with the prior art, the invention has at least the following beneficial effects: on the one hand, when the first door body is in an open state, the turnover beam can be locked at the folding position, so that the turnover beam is prevented from being turned over to the unfolding position from the folding position accidentally, and further the abnormal problems that the turnover beam is collided, cannot be closed and the like in the closing process of the door body are avoided; on the other hand, the first drive part is arranged on the turnover beam, the second drive part is arranged on the linkage piece, and the linkage piece is driven to move at the unlocking position and the locking position by interaction of the first drive part and the second drive part, so that additional resistance is not generated between the turnover beam and the box body due to the locking and unlocking functions of the turnover beam, and the problems of cold leakage and the like caused by overlarge resistance when the door body is closed, overlarge rotation resistance of the turnover beam when the door body is closed and incapability of turning the turnover beam in place are avoided.

Drawings

Fig. 1 is a perspective view of a refrigerator according to embodiment 1 of the present invention, which illustrates a door body in an opened state and a turnover beam in a retracted position, respectively;

fig. 2 is a schematic cross-sectional view of the refrigerator according to embodiment 1 of the present invention, which illustrates a door body in a closed state and a turnover beam in a corresponding unfolded position;

FIG. 3 is a schematic view of the structure of the turnover beam and the box base according to embodiment 1 of the present invention;

FIG. 4 is an exploded view of the turnover beam and the box base of embodiment 1 of the present invention;

FIG. 5 is an enlarged view of a portion of area A of FIG. 4;

FIG. 6 is a schematic structural view of the linkage member and the second magnetic attraction member according to embodiment 1 of the present invention;

FIG. 7 is a partial cross-sectional view of the roll-over beam of embodiment 1 of the present invention, illustrating the linkage in the locked position;

FIG. 8 is a partial cross-sectional view of the roll-over beam of embodiment 1 of the present invention, illustrating the linkage in the unlocked position;

FIG. 9 is a control logic diagram of embodiment 1 of the present invention;

FIG. 10 is a partial cross-sectional view of the roll-over beam of embodiment 2 of the present invention, illustrating the linkage in the locked position;

FIG. 11 is a control logic diagram of embodiment 2 of the present invention;

FIG. 12 is a partial schematic view of the roll-over beam of embodiment 3 of the present invention illustrating the linkage in the locked position;

FIG. 13 is a partial schematic view of the roll-over beam of embodiment 4 of the present invention illustrating the linkage in the locked position;

FIG. 14 is a partial schematic view of the roll-over beam of embodiment 4 of the present invention illustrating the linkage in the unlocked position;

FIG. 15 is a control logic diagram of embodiment 4 of the present invention;

FIG. 16 is a partial schematic view of the roll-over beam of embodiment 5 of the present invention illustrating the linkage in the unlocked position;

fig. 17 is a partial schematic view of the roll-over beam of embodiment 6 of the present invention, illustrating the linkage in the unlocked position.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to specific examples shown in the drawings. The examples are not intended to limit the invention and structural, methodological, or functional modifications of the invention based on these embodiments are within the scope of the invention.

Example 1

Referring to fig. 1 to 9, the present embodiment provides a refrigerator 100, and specifically referring to fig. 1, the refrigerator 100 includes a cabinet 1, a plurality of door bodies, a turnover beam 4, and a locking mechanism.

The main body of the case 1 generally comprises a casing forming the external appearance of the refrigerator 100, a liner sleeved in the casing and a heat insulation layer filled between the casing and the liner, and the main body of the case 1 defines at least one storage compartment with a front side opening, specifically, the liner generally encloses the storage compartment. Each storage compartment may be configured as a freezer compartment corresponding to a freezing temperature zone, a refrigerator compartment corresponding to a refrigerating temperature zone, a variable temperature compartment adjusted as needed, or compartments corresponding to other temperature zones, depending on storage requirements.

The front part of each storage compartment is matched and connected with a corresponding door body. In this embodiment, the refrigerator 100 is configured as a side-by-side refrigerator, and the front portion of the storage compartment 10 is coupled to the first door 2 and the second door 3 that is opposite to the first door 2, and the first door 2 and the second door 3 are used to open and close the storage compartment 10. The first door body 2 has an open state and a closed state, wherein: when the first door body 2 is in the open state, the front side opening of the storage compartment 10 corresponding to the first door body 2 is opened, so that a user can conveniently take out and put in the storage compartment 10; in the closed state of the first door 2, the front opening of the storage compartment 10 corresponding to the first door 2 is closed. Similarly, the second door 3 can also open and close the storage compartment 10 by a user, and will not be described again.

Referring to fig. 1 and 2, the turn beam 4 is provided as an elongated member in the first direction L, preferably an elongated straight member in the first direction L, which is rotatably coupled to the inner side of the first door body 2 about an axis T in the first direction L. Specifically, the pivoting side 401 of the turnover beam 4 is coupled to the first door body 2 by means of a hinge mechanism 70 rotatably about an axis T, the hinge mechanism 70 including a fitting shaft 72 fixedly connected to the first door body 2 and a hinge shaft 71 fixedly connected to the turnover beam 4, the fitting shaft 72 and the hinge shaft 71 being rotatably coupled about the axis T to achieve relative rotation of the turnover beam 4 and the first door body 2.

The roll-over beam 4 has a deployed position and a stowed position relative to the first door body 2 during the rotational travel of the roll-over beam 4, wherein: corresponding to the open condition of the first door 2, the flip-beam 4 is in said stowed position, with its free side 402 turned inside the first door 2 about the axis T, with its sealing face 400 substantially perpendicular to the first door 2; corresponding to the closed condition of the first door 2, the flip-beam 4 is in said extended position, with its free side 402 turned around the axis T to the outside of the first door 2 (i.e. protruding sideways out of the first door 2), with its sealing surface 400 substantially parallel to the first door 2. That is, the turning angle of the flip beam 4 between the extended position and the retracted position is substantially 90 °, and the angle can be adjusted as needed, but the present invention is not limited thereto.

In the present embodiment, the first direction L is illustrated as being vertically upward, i.e., the turn beam 4 extends vertically to be configured as a vertical beam, the turn beam 4 being rotatably connected to the first door body 2 about a vertical axis T, the turn beam 4 being located at the extended position and the free side 402 extending into the rear of the open side (e.g., left side in the drawing) of the second door body 3 for closing the gap between the first door body 2 and the second door body 3 when both the first door body 2 and the second door body 3 are in the closed state. Of course, in a variant embodiment, the first direction L may also be changed to a horizontal direction, that is, the turnover beam 4 extends horizontally to be configured as a cross beam, for example, the door body 2 'and the door body 3' for opening and closing the bottom freezing chamber illustrated in fig. 1 are provided as a vertically opened drawer type door body (that is, the door body 2 'and the door body 3' are assembled and connected with the freezing chamber drawer respectively, and the corresponding freezing chamber drawer can be opened and closed by pushing and pulling back and forth), the door body 2 'and the door body 3' are arranged side by side up and down, one turnover beam is rotatably connected to one of the door body 2 'and the door body 3' along a horizontal axis, and when both the door body 2 'and the door body 3' are in the closed state, the turnover beam is located in the opened position and is used for closing the gap between the door body 2 'and the door body 3'.

In order to realize corresponding rotation of the turnover beam 4 along with the opening and closing of the first door body 2, the box body 1 further comprises a first guide part 51 arranged on the main body of the box body 1, the turnover beam 4 further comprises a second guide part 52 arranged on one longitudinal end (the upper end in the embodiment), the first guide part 51 and the second guide part 52 together form a guide mechanism, and during the opening and closing process of the first door body 2, the second guide part 52 can be movably matched with the first guide part 51 so as to enable the turnover beam 4 to rotate between the unfolding position and the folding position.

One of the first guide part 51 and the second guide part 52 is a guide groove and the other is a guide protrusion. In this embodiment, the guiding mechanism is located at the upper end of the turnover beam 4, the main body of the box body 1 is fixedly provided with a box seat 50, the box seat 50 can be specifically and fixedly installed at the front edge of the liner, and the first guiding portion 51 is arranged to be concavely arranged in a guiding groove of the box seat 50 along the first direction L (i.e. upwards); correspondingly, the second guiding portion 52 is configured as a guiding protrusion protruding from the turnover beam 4 along the first direction L, and the guiding protrusion may be fixed to one longitudinal end of the turnover beam 4 (in this embodiment, the upper end of the turnover beam 4) by means of a screw, a buckle, or an integral molding. In a variant embodiment, the guiding mechanism can also be varied to the lower end of the turn beam 4; in addition, the first guide portion 51 may be provided as a guide projection, and the corresponding second guide portion 52 may be provided as a guide groove.

See fig. 1-4: when the first door body 2 is in a closed state, the starting part 521 of the guide projection stops at the tail end of the guide groove, and the turnover beam 4 is positioned at the unfolding position; when the first door body 2 is changed from the closed state to the open state, namely, during the opening process of the first door body 2, the guide protrusion is movably matched with the guide groove to guide the turnover beam 4 to rotate from the unfolding position to the folding position; as the first door 2 gradually moves away from the case 1, the corresponding guide projection and the guide groove are disengaged, that is, when the first door 2 is in the open state, the initial portion 521 of the guide projection is disengaged from the open end of the guide groove; when the first door body 2 is changed from the open state to the closed state, that is, during the closing process of the first door body 2, the starting portion 521 of the guide projection enters the guide groove again from the open end of the guide groove, and moves along the guide groove until the starting portion 521 reaches the tail end of the guide groove, so that the turning beam 4 is guided to rotate from the retracted position to the extended position.

As mentioned in the background art, in the prior art, when the door body loaded with the turnover beam is opened, due to the too high door opening speed or the manual turnover, the turnover beam frequently turns from the retracted position to the extended position by mistake, thereby causing abnormal door closing, causing inconvenience to the user in use, and the turnover beam is damaged due to collision in the door closing.

To solve this problem, the lock mechanism of the present embodiment is at least used to lock the roll-over beam 4 in the retracted position when the first door body 2 is in the open state.

Specifically, referring to fig. 3 to 8, the locking mechanism includes a linkage member 63 movably assembled to the turnover beam 4, a locking portion 64 fixedly disposed on the first door body 2, and a driving assembly for driving the linkage member 63 to move.

The interlocking piece 63 has an unlocking position and a locking position relative to the turnover beam 4, wherein: as shown in fig. 7, in the unlocking position, the interlocking piece 63 disengages the locking portion 64 to allow the turn beam 4 to rotate about the axis T, that is, unlock the turn beam 4; in the locking position, the interlocking member 63 cooperates with the locking portion 64 to prevent the turning beam 4 from rotating about the axis T, i.e., to lock the turning beam 4.

When the first door body 2 is in the opening and closing process, the guide protrusion is movably matched in the guide groove, the driving assembly enables the linkage piece 63 to be located at the unlocking position, so that the turnover beam 4 smoothly rotates along with the opening and closing of the first door body 2 under the action of the guide mechanism;

when the first door body 2 is in the open state, the starting portion 521 is separated from the open end of the guide groove, and at this time, the driving assembly makes the linkage member 63 be located at the locking position, and the linkage member 63 is matched with the locking portion 64 to prevent the rotation of the turnover beam 4, so that the turnover beam 4 is locked at the retracted position.

Therefore, compared with the prior art, when the first door body 2 is in an open state, the turnover beam 4 can be prevented from being accidentally turned from the corresponding storage position to the unfolding position due to artificial reasons or too high door opening speed, and further the abnormal problems that the turnover beam 4 is collided, cannot be closed and the like in the closing process of the first door body 2 are avoided.

The driving assembly comprises a first driving part 61 fixedly arranged on the turnover beam 4 and a second driving part 62 arranged on the linkage member 63, and the first driving part 61 and the second driving part 62 interact to drive the linkage member 63 to move between the unlocking position and the locking position. Therefore, the realization of the locking and unlocking functions of the turnover beam 4 can not cause extra resistance between the turnover beam 4 and the box body 1, and the problems of cold leakage and the like caused by overlarge resistance when the first door body 2 is closed, overlarge rotation resistance of the turnover beam 4 when the first door body 2 is closed and incapability of turning the turnover beam 4 in place are avoided.

Further, in this embodiment, when the first door 2 is in the closed state, the start portion 521 of the guide projection is stopped at the tail end of the guide groove, and the driving assembly makes the linkage member 63 be located at the locking position, so that the turnover beam 4 is locked at the unfolding position, thereby avoiding the accidental rebound of the turnover beam 4 caused by the opening and closing of the second door 3, and ensuring that the turnover beam 4 can effectively close the gap between the first door 2 and the second door 3.

Further, one of the first driving portion 61 and the second driving portion 62 is provided as an electromagnet, and the other is provided as a ferromagnetic member that cooperates with the electromagnet. In the present embodiment, the second driving portion 62 is provided as an electromagnet (for convenience of understanding, the following is exemplified by the electromagnet 62), that is, the electromagnet 62 is provided to the interlocking member 63; correspondingly, the first driving portion 61 is configured as a ferromagnetic member (for convenience of understanding, the ferromagnetic member 61 is used as an example below), that is, the ferromagnetic member 61 is fixedly disposed on the flipping beam 4.

The ferromagnetic member 61 may be a permanent magnet member, or may be a metal block of iron, cobalt, nickel, gadolinium, or other ferromagnetic alloy, preferably soft iron and silicon steel which are not magnetized.

Further, the interlocking member 63 moves between the unlocking position and the locking position along the first direction L, and the moving direction thereof is parallel to the lengthwise extending direction of the turnover beam 4, thereby facilitating the position design of the ferromagnetic member 61 and the electromagnet 62, which are aligned opposite to each other in the first direction L. Of course, in the modified embodiment, the moving direction of the interlocking member 63 is made different from the longitudinal direction of the turnover beam 4 by changing the arrangement positions of the ferromagnetic member 61 and the electromagnet 62.

In this embodiment, the starting portion 521 is provided with a hollow cavity 520, and the electromagnet 62 is movably disposed in the hollow cavity 520 along the first direction L and is shielded by the guide protrusion from above, so as to enhance the appearance, ensure clean and tidy, and protect the electromagnet 62 from being stained, and the electromagnet 62 is always located below the guide protrusion and not protruding out of the guide protrusion, so as to avoid contact between the electromagnet 62 and the box 1, and avoid the situation that the turnover beam 4 is excessively stressed in the rotation process to cause incomplete turnover.

The ferromagnetic member 61 is disposed at the initial portion 521 of the second guiding portion 52 and may be opposite to the hollow cavity 520 along the first direction L; the ferromagnetic member 61 may be configured as an upper end surface of the second guide portion 52 and exposed at the turnover beam 4, or may be fixed between an end surface of the second guide portion 52 and the hollow chamber 520 and shielded by the second guide portion 52.

Preferably, the roll-over beam 4 includes a panel 41 configured to form a sealing surface 400, a front cover 43 fixedly mounting the panel 41, a rear cover 45 snap-fitted with the front cover 43, an anti-dew tube 42 disposed between the front cover 43 and the panel 41, and a heat insulating layer 44 disposed between the front cover 43 and the rear cover 45.

Wherein, the inner side of the rear cover 45 is provided with a clip 451; the interlocking member 63 is provided as a rod structure movably assembled in the clip 451 up and down.

One end of the linkage member 63 is provided with a T-shaped groove 631, one end of the electromagnet 62 is provided with a T-shaped portion 621 to be adapted to the T-shaped groove 631, so that the electromagnet 62 is fixedly assembled and connected with the linkage member 63, and in a variant embodiment, the electromagnet 62 and the linkage member 63 may be integrally injection-molded through an insert.

The other end of the interlocking member 63 is engaged with or disengaged from the locking portion 64. Specifically, the locking portion 64 is formed on the mating shaft 72, which is provided as a slot or a projection provided around the axis T, and the link 63 is provided with a socket portion 632 that is fitted with the locking portion 64. In this embodiment, the locking portion 64 is a protrusion protruding upward, and the inserting portion 632 is configured as a slot. When the turnover beam 4 is in the retracted position and the extended position, the plugging portion 632 and the locking portion 64 are correspondingly positioned on the circumference of the axis T to be in plugging fit, so that the turnover beam 4 can be limited to rotate around the axis T relative to each other, and further the turnover beam 4 is prevented from rotating relative to the first door body 2; when the turnover beam 4 is located between the stowed position and the deployed position, that is, when the turnover beam is not located at the stowed position or the deployed position, the insertion portion 632 and the locking portion 64 are arranged in a staggered manner on the circumference of the axis T, and even if the interlocking member 63 moves in the opposite direction of the first direction L, the insertion portion 632 and the locking portion 64 cannot be inserted into each other, so that incorrect locking of the turnover beam 4 is not achieved.

Preferably, one of the rear cover 45 and the interlocking member 63 is further provided with a slide groove, and the other one thereof is provided with a fitting portion inserted into the slide groove to allow the interlocking member 63 to vertically move with respect to the turnover beam 4 while preventing the interlocking member 63 from pivoting with respect to the turnover beam 4 in the first direction L, whereby unstable locking state of the turnover beam 4 can be avoided.

Further, the locking mechanism also includes a cushion 62. In this embodiment, the cushion pad 65 is sleeved on the periphery of the electromagnet 62, and a rubber gasket may be specifically disposed. When the electromagnet 62 is attracted by the ferromagnetic member 61 to move in the first direction L, the cushion pad 65 is sandwiched between the interlocking member 63 and the turnover beam 4, thereby reducing collision, noise, and protecting the product. In addition, the cushion pad 65 may also be configured to: when the interlocking member 63 moves in the opposite direction of the first direction L, the cushion pad 65 is clamped between the interlocking member 63 and the turnover beam 4, thereby reducing collision, noise, and protecting a product.

Further, the electromagnet 62 is controlled to be in the first mode or the second mode, so that the linkage 63 moves between the unlocking position and the locking position. The first mode and the second mode represent two different energized states of the electromagnet 62, respectively.

Further, referring to fig. 9, the refrigerator 100 further includes a sensing device and a control device.

The sensing means is for sensing the state of the first door body 2, and may transmit the sensed result to the control means.

In this embodiment, the sensing device is configured to: sensing a door-closed state signal corresponding to a closed state of the first door body 2, a door-open state signal corresponding to an open state of the first door body 2; and sensing a door opening operation signal and a door closing operation signal of the first door body 2.

The sensing device may be implemented in any available manner capable of sensing the door body state, for example:

for the door-closed state signal, the sensing means may include a sensing element disposed between the case 1 and the first door 2, such that the door-closed state signal is obtained when the first door 2 and the case 1 are sensed to be in sealing contact; alternatively, the door closing state signal may be obtained when the start portion 521 is sensed to be located at the rear end of the guide groove;

for the door-open state signal, the sensing device may include a sensing element disposed between the case 1 and the first door 2, such that the door-open state signal is obtained when the first door 2 and the case 1 are sensed to be far away from a target position; alternatively, a sensing element provided at the open end of the guide groove may be further included so that the door open state signal is obtained when the start 521 is sensed to be separated from the open end of the guide groove;

For the door opening operation signal, the sensing device may include a sensing element disposed between the case 1 and the first door 2, such that the door opening operation signal is obtained when the first door 2 and the case 1 are sensed to be released from sealing contact; alternatively, the door opening device may further include a sensing element disposed at a rear end of the guide groove such that the door opening signal is obtained when the start 521 is sensed to be separated from the rear end of the guide groove; or, it may further include a sensing element provided at the door handle of the first door body 2 such that the door opening motion signal is obtained when a motion of a user gripping the door handle is sensed; or, the door opening device may further include a sensing element disposed outside the first door body 2, so that the door opening signal is obtained when an opening motion command satisfying a preset condition is sensed;

for the door closing action signal, the sensing device may include a sensing element disposed between the case 1 and the first door 2, such that the door closing state signal is obtained when the first door 2 and the case 1 are sensed to be restored to the target position; a sensing element provided at the open end of the guide groove may be further included so that the door closing action signal is obtained when the entrance of the starting part 521 into the open end of the guide groove is sensed.

The foregoing sensing elements may be specifically configured as, for example, a micro-switch module, or a sensor such as a voltage sensor, a capacitance sensor, an infrared sensor, a laser sensor, or an image collector, which may be used to sense the state of the first door body 2.

Although the above embodiments have exemplarily disclosed various embodiments of the sensing device in sensing various signals, and specific embodiments of various structures of the respective sensing elements, these embodiments are merely examples of the sensing device and are not limited thereto.

The control device is connected with the sensing device and the driving assembly and controls the driving assembly to be in the first mode or the second mode according to the sensing of the sensing device.

Embodiments of the control device may be various types of processors including at least one chip on which an integrated circuit is formed, the number of the processors may be set to one or more, and may also include a memory, a timer, and the like. A processor to perform arithmetic or logical operations on the acquired data according to a program stored in the memory, for example, to control a timer to start a timing function according to the relevant program; although the processor and the memory and the timer are functionally distinguished from each other for convenience of description, it should be noted that the processor and the memory and the timer are not always physically distinguished from each other, for example, the processor and the memory and the timer may be implemented with different chips or may be implemented as a single chip as desired.

Preferably, the control device is configured to:

controlling the electromagnet 62 to be in the second mode according to the received door closing state signal, that is, controlling the electromagnet 62 to be in the second mode when the first door body 2 is in the closed state; controlling the electromagnet 62 to be in the first mode according to the received door opening action signal until the door opening state signal is received, that is, when the first door body 2 is opened and the guide protrusion is not separated from the guide groove, controlling the electromagnet 62 to be in the first mode; the received door opening state signal controls the electromagnet 62 to be in the second mode, that is, when the first door body 2 is in the open state, the electromagnet 62 is controlled to be in the second mode; the electromagnet 62 is controlled to assume a first mode in response to the received door closing motion signal.

Specifically, one of the first mode and the second mode is a state in which the electromagnet 62 is electrified and magnetized, and the other is a state in which the electromagnet 62 is deenergized and demagnetized. In this embodiment, when the electromagnet 62 is energized to generate magnetism, the electromagnet 62 is matched with the ferromagnetic member 61 through magnetic attraction force to drive the linkage member 63 to move along the first direction L; when the electromagnet 62 is de-energized and demagnetized, the linkage member 63 moves in the opposite direction of the first direction L under the action of gravity.

In detail, when the first door body 2 is in the process of opening and closing and the guiding mechanism guides the turnover beam 4 to turn over, the electromagnet 62 is electrified to generate magnetism, and is matched with the ferromagnetic member 61 through magnetic attraction force, in view of the matching of the magnetic attraction force, the electromagnet 62 moves along the first direction L towards the ferromagnetic member 61 to drive the linkage member 63 to also move along the first direction L, and the first direction L is vertical upwards, so that the lower end of the linkage member 63 is vertically upwards separated from the unlocking stop 64, so that the turnover beam 4 can normally rotate;

when the first door body 2 is in the closed state and the open state, the electromagnet 62 is de-energized and demagnetized, the magnetic attraction between the electromagnet 62 and the ferromagnetic member 61 disappears, the electromagnet 62 drives the linkage member 63 to automatically fall under the action of gravity, and the lower end of the linkage member 63 is vertically and downwardly matched with the locking portion 64, so as to realize the locking of the turnover beam 4.

Compared with the prior art, the embodiment has the following beneficial effects:

(1) When the first door body 2 is in an open state, the turnover beam 4 can be locked at a folding position, so that the turnover beam 4 is prevented from being turned over from the folding position to the unfolding position accidentally, and further, the abnormal problems that the turnover beam 4 is collided, cannot be closed and the like in the closing process of the first door body 2 are avoided;

(2) The first driving part 61 is arranged on the turnover beam 4, the second driving part 62 is arranged on the linkage member 63, and the first driving part 61 and the second driving part 62 interact to drive the linkage member 63 to move between the unlocking position and the locking position, so that the realization of the locking and unlocking functions of the turnover beam 4 can not cause extra resistance between the turnover beam 4 and the box body 1, and the problems of cold leakage and the like caused by overlarge resistance when the first door body 2 is closed, overlarge rotation resistance of the turnover beam 4 when the first door body 2 is closed, incapability of turning over the turnover beam 4 in place and the like are avoided;

(3) When the first door body 2 is in a closed state, the turnover beam 4 can be locked at the unfolding position, so that accidental rebound of the turnover beam 4 due to opening and closing of the second door body 3 is avoided, and the turnover beam 4 can effectively close a gap between the first door body 2 and the second door body 3;

(4) By arranging the electromagnet 62, the magnetic strength of the electromagnet 62 can be adjusted by the number of turns of the coil and the current, so that the locking and the rotation of the turnover beam 4 can be smoothly realized according to actual needs;

(5) The electromagnet 62 is energized only during the process of turning over the turnover beam 4 during the door opening and closing process, and the rest of the time (the door opening state and the door closing state) is deenergized, so that the power consumption is small.

Example 2

Referring to fig. 10 to 11, this embodiment provides a refrigerator, which differs from the foregoing embodiment 1 only in the following points:

in the foregoing embodiment 2, the lower end of the interlocking member 63 is located above the hinge mechanism 70, and is engaged with the locking portion 64 when the interlocking member 63 moves in the opposite direction (illustratively, vertically downward) of the first direction L, whereas the locking portion 64 is disengaged when the interlocking member 63 moves in the first direction L; unlike embodiment 2, the lower end of the linking member 63 is located below the hinge mechanism 70, and engages with the locking portion 64 when the linking member 63 moves in the first direction L (in the example, vertically upward), whereas the locking portion 64 is disengaged when the linking member 63 moves in the opposite direction of the first direction L. That is, the relative positions of the lock portion 64 and the interlocking piece 63 in this embodiment are different from embodiment 1.

Correspondingly, when the first door body 2 is in the opening and closing process and the guide mechanism guides the turnover beam 4, the electromagnet 62 is powered off and demagnetized, no magnetic force exists between the electromagnet 62 and the ferromagnetic piece 61, the electromagnet 62 drives the linkage piece 63 to automatically fall under the action of gravity, and the lower end of the linkage piece 63 vertically and downwards breaks away from the unlocking stop part 64 so as to unlock the turnover beam 4;

When the first door body 2 is in a closed state, the electromagnet 62 is electrified to generate magnetism, and is matched with the ferromagnetic piece 61 through magnetic attraction force, in view of the matching of the magnetic attraction force, the electromagnet 62 moves towards the ferromagnetic piece 61 along the first direction L so as to drive the linkage piece 63 to move along the first direction L, and the first direction L is vertical upwards, so that the lower end of the linkage piece 63 is vertically upwards matched with the locking part 64, and the turnover beam 4 is locked at the unfolding position;

when the first door body 2 is in the open state, the electromagnet 62 is electrified to generate magnetism, and at the same time, as in the closed state, the lower end of the linkage member 63 is vertically matched with the locking part 64 upwards, so that the turnover beam 4 is correspondingly locked in the retracted position.

Except for the above, the other technical solutions in this embodiment and the advantages compared with the prior art are the same as those in the foregoing embodiment 1, and will not be described again.

Example 3

Referring to fig. 12, the present embodiment provides a refrigerator, which differs from the foregoing embodiment 2 only in the following points:

in the foregoing embodiment 2, when the first door body 2 is in the process of opening and closing and the guide mechanism guides the turnover beam 4, the electromagnet 62 is de-energized and demagnetized, and the linkage member 63 automatically falls to the unlocking position under the action of gravity, so as to unlock the turnover beam 4; when the first door body 2 is in the closed state or the open state, the electromagnet 62 is electrified to generate magnetism, and is matched with the ferromagnetic piece 61 through magnetic attraction, and the linkage piece 63 vertically moves upwards to a locking position so as to realize locking of the turnover beam 4.

In contrast, in this embodiment, the locking mechanism includes an additional elastic member 66, where the elastic member 66 may be specifically disposed between the linkage member 63 and the turnover beam 4 or between the electromagnet 62 and the turnover beam 4, and may be specifically any spring or shrapnel such as a tension spring, a compression spring, a torsion spring, or the like.

Further, when the first door body 2 is in the process of opening and closing and the guiding mechanism guides the turnover beam 4, the electromagnet 62 is electrified to generate magnetism, and is matched with the ferromagnetic piece 61 (which is a permanent magnet disposed in homopolar opposition to the electromagnet 62) through magnetic repulsive force, in view of the matching of the magnetic repulsive force, the electromagnet 62 moves away from the ferromagnetic piece 61 in the opposite direction of the first direction L so as to drive the linkage piece 63 to also move in the opposite direction of the first direction L, the first direction L is vertically upward, and thus, the lower end of the linkage piece 63 is vertically separated from the unlocking stop 64 downward, so that the turnover beam 4 can normally rotate;

when the first door body 2 is in the closed state or the open state, the electromagnet 62 is de-energized and demagnetized, the magnetic repulsive force between the electromagnet and the ferromagnetic member 61 disappears, the linking member 63 moves along the first direction L under the elastic restoring force of the elastic member 66, and the lower end of the linking member 63 is matched with the locking portion 64 upwards, so as to lock the turnover beam 4.

In summary, this embodiment is different from the foregoing embodiment 2 in that: the electromagnet 62 and the ferromagnetic member 61 have different magnetic forces when energized and demagnetized, and the interlocking member 63 has different reset forces when deenergized. In addition, the other technical solutions of the two embodiments are basically the same, so it can be understood that the present embodiment can also obtain the beneficial effects of embodiment 2, and will not be described again.

Example 4

Referring to fig. 13 to 15, this embodiment provides a refrigerator, which is different from the foregoing embodiment 1 in that: the relative positions of the electromagnet 62 and the ferromagnetic member 61 and mode control. Only this difference will be described below, and the remaining technical matters identical to those of the foregoing embodiment 1 will not be repeated.

Specifically, in the foregoing embodiment 1, the ferromagnetic member 61 may be provided as a permanent magnet or as a metal block of iron, cobalt, nickel, gadolinium, or the like or other ferromagnetic alloy; unlike this, in the present embodiment, the ferromagnetic member 61 is provided as a permanent magnet.

Further, in the foregoing embodiment 1, the linking member 63 reciprocates in the first direction L between the unlock position and the lock position, and the turnover beam 4 extends in the first direction L and rotates about the axis T in the first direction L; unlike this, in the present embodiment, the flipping beam 4 extends in the first direction L and rotates about the axis T in the first direction L, and the interlocking piece 63 reciprocates between the unlock position and the lock position in the perpendicular direction to the first direction L.

Correspondingly, when the linkage member 63 moves from the unlocking position to the locking position, one end of the linkage member 63 is inserted into the locking part along the radial direction of the axis T, so as to realize locking of the turnover beam 4; on the contrary, when the interlocking member 63 moves from the locking position to the unlocking position, one end of the interlocking member 63 is separated from the locking portion along the radial direction of the axis T, so as to unlock the turnover beam 4.

Specifically, in the present embodiment, the locking portion is an insertion hole formed on the mating shaft 72, the interlocking member 63 is provided in a rod structure, and one end thereof may be inserted into the insertion hole to achieve the mating of the interlocking member 63 and the locking portion; of course, in a variant implementation, the locking portion may be deformed into a protrusion, and one end of the linking member 63 is provided with a hole structure adapted to the protrusion.

Preferably, the first direction L is a vertical direction, that is, the interlocking member 63 reciprocates between the unlock position and the lock position in the horizontal direction, and the interlocking member 63 is slidably coupled in the turnover beam 4, and a part thereof contacting the turnover beam 4 is preferably provided with an anti-friction surface composed of POM (polyoxymethylene) material to reduce a movement resistance.

Further, in the foregoing embodiment 1, one of the first mode and the second mode is a state in which the electromagnet 62 is energized to generate magnetism, and the other is a state in which the electromagnet 62 is deenergized to demagnetize; unlike this, in the present embodiment, one of the first mode and the second mode is that the electromagnet 62 is energized to generate magnetism under a reverse current, and the other is that the electromagnet 62 is energized to generate magnetism under a forward current.

Specifically, when the first door body 2 is in the process of opening and closing and the guide mechanism guides the turnover beam 4, the electromagnet 62 is electrified and magnetically generated under the reverse current, and is matched with the ferromagnetic piece 61 through the magnetic attraction force, and in view of the matching of the magnetic attraction force, the electromagnet 62 approaches to the ferromagnetic piece 61 to move so as to drive the linkage piece 63 to be separated from the unlocking stop portion 64, so that the turnover beam 4 can normally rotate;

when the first door body 2 is in the closed state and the open state, the electromagnet 62 is electrified and magnetically generates under forward current, and is matched with the ferromagnetic member 61 through magnetic repulsive force, and in view of the matching of the magnetic attractive force, the electromagnet 62 moves away from the ferromagnetic member 61 to drive the linkage member 63 to approach and be in plug-in fit with the locking part 64, so that the locking of the turnover beam 4 is realized.

Otherwise, the other technical solutions of this embodiment are basically the same as those of embodiment 1, so it can be understood that the present embodiment can also obtain the beneficial effects of embodiment 1, and will not be described again.

Example 5

Referring to fig. 16, this embodiment provides a refrigerator, which differs from the foregoing embodiment 4 only in that: the drive assembly comprises two ferromagnetic members 61-1 and 61-2 cooperating with an electromagnet 62, and in a first mode and a second mode the magnetic forces between the two ferromagnetic members and the electromagnet 62 are different. Only this difference will be described below, and the remaining technical matters identical to those of the foregoing embodiment 4 will not be repeated.

Specifically, one ferromagnetic piece 61 configured as a permanent magnet is provided in the foregoing embodiment 4; unlike this, in the present embodiment, the driving assembly includes two ferromagnetic members 61-1 and 61-2 cooperating with an electromagnet 62, the ferromagnetic members 61-1 and 61-2 are each configured as permanent magnets and are disposed with their same poles facing each other, the electromagnet 62 is disposed between the two ferromagnetic members 61-1 and 61-2, and the magnetic poles of the electromagnet 62 are disposed opposite to the two ferromagnetic members 61-1 and 61-2, respectively.

As shown, the ferromagnetic member 61-1, the electromagnet 62, and the ferromagnetic member 61-2 are arranged in this order in the perpendicular direction to the first direction L. The electromagnet 62 is also coupled to the interlocking member 63 as in embodiment 4 and reciprocates in a direction perpendicular to the first direction L.

As in the previous embodiment 4, the electromagnet 62 is energized and magnetized in the reverse current, and the electromagnet is energized and magnetized in the forward current. The difference is that in the first mode and the second mode, the ferromagnetic member 61-1 and the ferromagnetic member 61-2 can be magnetically force-fitted to the electromagnet 62, and the magnetic force between the ferromagnetic member 61-1 and the electromagnet 62 is different from the magnetic force between the ferromagnetic member 61-2 and the electromagnet 62.

Specifically, when the first door body 2 is in the process of opening and closing and the guide mechanism guides the turnover beam 4, the electromagnet 62 is electrified to generate magnetism under the reverse current, and is matched with the ferromagnetic piece 61-1 through the magnetic attraction force, and is matched with the ferromagnetic piece 61-2 through the magnetic repulsive force, and the electromagnet 62 moves to the right side in the diagram 18 to drive the linkage piece 63 to be separated from the unlocking part 64, so that the turnover beam 4 can normally rotate;

When the first door body 2 is in the closed state and the open state, the electromagnet 62 is electrified and magnetically generates forward current, and is matched with the ferromagnetic piece 61-1 through magnetic repulsive force and is matched with the ferromagnetic piece 61-2 through magnetic attractive force, and the electromagnet 62 moves to the left side in the diagram 18 so as to drive the linkage piece 63 to approach and be in plug-in fit with the locking part 64, so that locking of the turnover beam 4 is realized.

That is, the present embodiment is fundamentally different from embodiment 4 in that one ferromagnetic member 61-2 is added on the basis of embodiment 4, and the ferromagnetic member 61-2 is homopolar-opposed to the ferromagnetic member 61-1, thereby facilitating a smoother movement of the driving linkage member 63. It can be appreciated that the beneficial effects of embodiment 4 can be obtained in the same manner in this embodiment, and will not be described again.

Example 6

Referring to fig. 17, this embodiment provides a refrigerator, which differs from the foregoing embodiment 4 only in that: the specific configuration of the ferromagnetic member 61 may be different; an elastic member 66 is added; the state of the electromagnet 62 is different in the first mode and the second mode. Only this difference will be described below, and the remaining technical matters identical to those of the foregoing embodiment 4 will not be repeated.

Specifically, the ferromagnetic piece 61 configured as a permanent magnet is provided in the foregoing embodiment 4; unlike this, in the present embodiment, the ferromagnetic member 61 may be provided as a permanent magnet or may be provided as a metal block of iron, cobalt, nickel, gadolinium, or the like or other ferromagnetic alloy.

In embodiment 4, the electromagnet 62 is energized and magnetized in the reverse current, and the electromagnet is energized and magnetized in the forward current; unlike this, in the present embodiment, one of the first mode and the second mode is that the electromagnet 62 is electrified to generate magnetism, and the other is that the electromagnet 62 is powered off to demagnetize, that is, the same as embodiment 1.

Specifically, with respect to embodiment 4, the locking mechanism of this embodiment includes an elastic member 66, when the electromagnet 62 is energized to generate magnetism, the electromagnet 62 is magnetically engaged with the ferromagnetic member 61 to drive the linkage member 63 to move; when the electromagnet 62 is de-energized and demagnetized, the magnetic force between the electromagnet 62 and the ferromagnetic member 61 is eliminated, and the interlocking member 63 is reversely reset under the elastic restoring force of the elastic member 66. Of course, there are a variety of specific implementation directions: for example, the magnetic force between the electromagnet 62 and the ferromagnetic member 61 when the electromagnet 62 is energized and magnetized may be specifically set to be a magnetic attractive force or a magnetic repulsive force, and for example, the interlocking member 63 may be set to move from the lock position to the unlock position or from the unlock position to the lock position when the electromagnet 62 is energized and magnetized, and for example, the elastic member 66 may be set to be any one of a tension spring, a compression spring, a torsion spring, and a spring plate. These modifications are all modifications without departing from the gist of the present invention.

In the embodiment of the drawings, when the first door body 2 is in the process of opening and closing and the guide mechanism guides the turnover beam 4, the electromagnet 62 is de-energized and demagnetized, the linkage member 63 moves along the right direction in the drawing under the elastic restoring force of the elastic member 66, and the linkage member 63 is separated from the unlocking stop portion 64, so as to unlock the turnover beam 4;

when the first door body 2 is in the closed state and the open state, the electromagnet 62 is electrified to generate magnetism, and is matched with the ferromagnetic piece 61 through magnetic repulsive force, the magnetic repulsive force overcomes the elastic piece 66 and drives the linkage piece 63 to approach and be in plug-in fit with the locking part 64, so that the locking of the turnover beam 4 is realized.

It can be appreciated that the beneficial effects of embodiment 4 can be obtained in the same manner in this embodiment, and will not be described again.

Although the present disclosure describes embodiments, not every embodiment contains only one independent technical solution, and those skilled in the art should understand that the disclosure may also combine technical solutions in each embodiment as a whole to form other embodiments that can be understood by those skilled in the art.

The above detailed description is merely illustrative of possible embodiments of the present invention, which should not be construed as limiting the scope of the invention, and all equivalent embodiments or modifications that do not depart from the spirit of the invention are intended to be included in the scope of the invention.

Claims (8)

1. A refrigerator, comprising:

the box body comprises a main body defining a compartment and a first guide part arranged on the main body;

a first door body and a second door body for opening and closing the compartment;

the turnover beam is rotationally arranged on the first door body and comprises a second guide part, and the second guide part is matched with the first guide part to guide the turnover beam to rotate between an unfolding position and a folding position in the opening and closing process of the first door body; the refrigerator is characterized by further comprising a locking mechanism, wherein the locking mechanism comprises:

the locking part is fixedly arranged on the first door body;

the linkage piece is movably arranged on the turnover beam, and when the first guide part is movably matched with the second guide part, the linkage piece is positioned at an unlocking position separated from the locking part so as to allow the turnover beam to rotate; when the first guide part and the second guide part are separated, the linkage piece is positioned at a locking position matched with the locking part, so that the turnover beam is locked at the folding position;

the driving assembly comprises a first driving part fixedly arranged on the turnover beam and a second driving part arranged on the linkage piece, and the first driving part and the second driving part interact to drive the linkage piece to move between the unlocking position and the locking position;

One of the first driving part and the second driving part is provided as an electromagnet, and the other one is provided as a ferromagnetic piece matched with the electromagnet; the electromagnet is controlled to be in a first mode or a second mode;

one of the first mode and the second mode is that the electromagnet is electrified and magnetized under the forward current, and the other one is that the electromagnet is electrified and magnetized under the reverse current;

when the electromagnet is electrified and magnetized under forward current, the electromagnet is matched with the ferromagnetic piece through a first magnetic force so as to drive the linkage piece to move forward;

when the electromagnet is electrified and magnetically generated under reverse current, the electromagnet is matched with the ferromagnetic piece through second magnetic force so as to drive the linkage piece to move reversely;

wherein one of the first magnetic force and the second magnetic force is a magnetic attractive force and the other is a magnetic repulsive force, the forward direction and the reverse direction being opposite;

the number of the ferromagnetic pieces is two, and the two ferromagnetic pieces are homopolar and oppositely fixed on the turnover beam; the electromagnet is fixedly arranged between the two ferromagnetic pieces and is respectively matched with the two ferromagnetic pieces by different magnetic forces when the electromagnet is electrified and magnetized.

2. The refrigerator of claim 1, wherein one of the first guide portion and the second guide portion is a guide groove and the other is a guide protrusion;

when the first door body is in a closed state, the initial part of the guide protrusion stops at the tail end of the guide groove;

the guide protrusion moves in the guide groove to guide the turnover beam to rotate when the first door body is in the opening and closing process;

when the first door body is in an open state, the starting part is separated from the opening end of the guide groove.

3. The refrigerator of claim 1, wherein the turn beam extends lengthwise in a first direction and rotates about an axis in the first direction relative to the first door, the forward direction and the reverse direction being perpendicular to the first direction;

one of the ferromagnetic pieces, the electromagnet and the other ferromagnetic piece are sequentially arranged in the forward direction.

4. The refrigerator of claim 2, wherein the interlocking member is located at a locking position cooperating with the locking part when the first door body is in a closed state, so that the turnover beam is locked at the unfolded position.

5. The refrigerator of claim 4, further comprising:

a sensing device for sensing a status signal of the first door body;

the control device is connected with the sensing device and the driving component and controls the driving component to be in the first mode or the second mode according to the received state signal.

6. The refrigerator of claim 5, wherein the sensing device is configured to: sensing a door closing state signal, a door opening action signal, a door closing action signal and a door opening state signal of the first door body;

the control device is configured to: controlling the driving assembly to be in a second mode according to the received door closing state signal; controlling the driving assembly to be in a first mode according to the received door opening action signal; controlling the driving assembly to be in a second mode according to the received door opening state signal; and controlling the driving assembly to be in a first mode according to the received door closing action signal.

7. The refrigerator of claim 4, wherein the turn beam is rotatably coupled to the first door body about an axis in a first direction by a hinge mechanism;

the hinge mechanism comprises a matching shaft fixedly connected with the first door body and a hinge shaft fixedly connected with the turnover beam, and the matching shaft and the hinge shaft are rotationally matched and connected around the axis;

The locking part is formed on the matching shaft and is arranged as a slot or a bulge which is arranged around the axis, and the linkage piece is provided with a plug-in part which is matched with the locking part;

when the turnover beam is in the folding position and the unfolding position, the inserting part and the locking part are in position correspondence on the circumference of the axis so as to be in inserting fit; when the turnover beam is positioned between the folding position and the unfolding position, the inserting part and the locking part are arranged in a staggered mode on the circumference of the axis.

8. The refrigerator of claim 1, wherein the interlocking member is provided in a lever structure, one end of which is assembled with the second driving part or insert-molded as one body, and the other end of which is engaged with or disengaged from the locking part;

the refrigerator further comprises a buffer pad, and the buffer pad is clamped between the rod structure and the turnover beam when the linkage piece moves to the locking position or the unlocking position.