CN114136040A - Refrigerator with a door - Google Patents

Abstract

The invention discloses a refrigerator, comprising: a box body; the first door body and the second door body; the turnover beam is rotatably 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 opening state, the linkage piece is located at a locking position matched with the locking part, so that the turnover beam is locked at the retracting 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 with each other to drive the linkage piece to move between the unlocking position and the locking position.

Description

Refrigerator with a door

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 essential 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 mostly stored in a refrigerator at low temperature.

In order to ensure that the cold loss occurs at the gap between two door bodies of the conventional multi-door refrigerator, a turning beam is arranged on one of the door bodies, such as a turning cross beam disclosed by the CN202188717U chinese patent and a turning vertical beam disclosed by the CN101135531A chinese patent. Specifically, such a turnover beam is rotatably fitted inside one of two adjacent door bodies, and along with the opening and closing of the door bodies, the turnover beam can rotate between an expanded position and a retracted position: that is, when the door body is opened, the turnover beam rotates to the folding position, so that the opening and closing of the door body are not influenced; when the door bodies are closed, the turnover beam rotates to the unfolding position, so that the gap between the two door bodies is closed, and the cold energy in the compartment inside the refrigerator is prevented from leaking from the gap between the two door bodies.

However, when the door body loaded with the turning beam is opened in the using process of the existing turning beam, the turning beam is mistakenly turned from the originally stored position to the unfolded position due to reasons of rebounding caused by too fast rotation or manual turning, and the like, so that the turning beam collides with another door body or a box body when the door body is closed, and the problems of structural damage, incapability of closing the door and the like are caused.

Although some solutions are provided for the problem of the existing refrigerator, the solutions often cause new technical problems of excessive resistance when the door body is closed, excessive rotation resistance of the turnover beam when the door body is closed, cold leakage caused by insufficient turnover of the turnover beam, and the like.

Disclosure of Invention

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

To achieve the above object, one embodiment provides a refrigerator including:

a case including a main body defining a compartment and a first guide portion provided to the main body;

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

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

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

the linkage piece is movably arranged on the overturning 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 overturning beam to rotate; when the first guide part is separated from the second guide part, the linkage piece is located at a locking position matched with the locking part, so that the overturning beam is locked at the retracting 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 with each other 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 portion and the second driving portion is provided as an electromagnet, and the other thereof is provided as a ferromagnetic member fitted 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 projection;

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

when the first door body is opened and closed, the guide bulge moves in the guide groove to guide the turnover beam to rotate;

when the first door body is in an opening 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 to energize the electromagnet to generate magnetism, and the other is to deenergize the electromagnet to demagnetize;

when the electromagnet is electrified to generate magnetism, the electromagnet is matched with the ferromagnetic part through magnetic force so as to drive the linkage part to move along a first direction;

when the electromagnet is powered off and demagnetized, the linkage piece moves in 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 linkage 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, 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 arranged in the first direction in a facing manner.

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

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

when the electromagnet is electrified under forward current to generate magnetism, the electromagnet is matched with the ferromagnetic part through first magnetic force to drive the linkage part to move forward;

when the electromagnet is electrified to generate magnetism under reverse current, the electromagnet is matched with the ferromagnetic part through second magnetic force to drive the linkage part 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, and the forward direction and the reverse direction are opposite.

As a further improvement of an embodiment of the present invention, the number of the ferromagnetic pieces is set to two and two of the ferromagnetic pieces are fixed to the turning beam in homopolar opposition; the electromagnet is fixedly arranged on the linkage piece, is positioned between the two ferromagnetic pieces and is respectively matched with the two ferromagnetic pieces with different magnetic forces when electrified to generate magnetism.

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

the ferromagnetic part, the electromagnet and the other ferromagnetic part are sequentially arranged in the forward direction.

As a further improvement of an embodiment of the present invention, when the first door is in a closed state, the linkage member is located at a locking position where the linkage member is engaged 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:

the sensing device senses a state signal of the first door body;

and 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 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 about an axis along 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 rotatably connected around the axis;

the locking part is formed on the matching shaft and is provided with a slot or a bulge arranged around the axis, and the linkage part is provided with an inserting part matched with the locking part;

when the turnover beam is in a retracted position and a deployed position, the insertion part and the locking part correspond to each other in position on the circumference of the axis so as to be capable of being matched in an insertion manner; when the turnover beam is located between the retracted position and the deployed position, the insertion part and the locking part are arranged on the circumference of the axis in a staggered mode.

As a further improvement of an embodiment of the present invention, the linkage member is configured as a rod structure, one end of the linkage member is assembled and connected with the second driving portion or is integrated by insert molding, and the other end of the linkage member can be matched with or separated from the locking portion;

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

Compared with the prior art, the invention has at least the following beneficial effects: on one hand, when the first door body is in an opening state, the turnover beam can be locked at the retraction position so as to avoid the turnover beam from being accidentally turned from the retraction position to the unfolding position, and further avoid the abnormal problems that the turnover beam is collided and cannot be closed in the closing process of the door body; on the other hand, first drive division sets up in the upset roof beam, and the interlock piece is located to the second drive division, and the two interact is used for driving the interlock piece and moves at unblock position and locking position for the realization of the locking and the unblock function of upset roof beam can not lead to producing extra resistance between upset roof beam and the box, and the rotation resistance of upset roof beam is too big when avoiding arousing the door body to close, the upset of the door body is closed, upset roof beam upset is not in place and is caused the scheduling problem of leaking cold.

Drawings

Fig. 1 is a perspective structural view of a refrigerator according to embodiment 1 of the present invention, which illustrates that a door body is in an open state and a turnover beam is correspondingly located at a retracted position;

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

FIG. 3 is a schematic structural view of the overturning beam and the box base in embodiment 1 of the present invention;

FIG. 4 is an exploded view of the flip beam and cassette holder of embodiment 1 of the present invention;

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

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

fig. 7 is a partial sectional view of the turnover beam of embodiment 1 of the present invention, which illustrates the interlocking member in the locking position;

fig. 8 is a partial sectional view of the turnover beam of embodiment 1 of the present invention, which illustrates the linkage in the unlocking position;

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

fig. 10 is a partial sectional view of the turnover beam of embodiment 2 of the present invention, which illustrates the interlocking member in the locking position;

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

fig. 12 is a partial schematic view of the flip beam of embodiment 3 of the invention, illustrating the linkage in the locked position;

fig. 13 is a partial schematic view of the flip beam of embodiment 4 of the invention, illustrating the linkage in the locked position;

fig. 14 is a partial schematic view of the flip beam of embodiment 4 of the present invention, which illustrates the linkage in the unlocking position;

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

fig. 16 is a partial schematic view of the turning beam of embodiment 5 of the invention, which illustrates the linkage in the unlocking position;

fig. 17 is a partial schematic view of the flip beam according to embodiment 6 of the present invention, which illustrates the linkage in the unlocking position.

Detailed Description

The embodiments of the present invention will be described in detail below with reference to specific examples shown in the drawings. These examples are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to these embodiments are included in the scope of the present 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 refrigerator body 1, a plurality of door bodies, a turning beam 4, and a locking mechanism.

The main body of the refrigerator body 1 generally includes a housing forming the appearance of the refrigerator 100, an inner container sleeved in the housing, and an insulating layer filled between the housing and the inner container, and the main body of the refrigerator body 1 defines at least one storage compartment with a front opening, and in particular, the inner container generally encloses the storage compartment. Each storage compartment can be constructed into a freezing chamber corresponding to a freezing temperature zone, a refrigerating chamber corresponding to a refrigerating temperature zone, a temperature changing chamber adjusted according to needs, or compartments corresponding to other temperature zones according to storage requirements.

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

Referring to fig. 1 and 2, the turnover beam 4 is provided as a long member in the first direction L, preferably a long straight member in the first direction L, and is rotatably coupled to the inside 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 rotatably coupled to the first door body 2 around the axis T through the hinge mechanism 70, the hinge mechanism 70 includes a fitting shaft 72 fixedly connected to the first door body 2 and a hinge shaft 71 fixedly connected to the turnover beam 4, and the fitting shaft 72 and the hinge shaft 71 are rotatably coupled around the axis T to realize the relative rotation of the turnover beam 4 and the first door body 2.

In the rotation travel of the rocker beam 4, the rocker beam 4 has an extended position and a retracted position relative to the first door body 2, wherein: corresponding to the opening state of the first door body 2, the turnover beam 4 is located at the retraction position, the free side 402 rotates to the inside of the first door body 2 around the axis T, and the sealing surface 400 is approximately vertical to the first door body 2; corresponding to the closed state of the first door body 2, the turning beam 4 is located at the unfolding position, the free side 402 thereof rotates around the axis T to the outside of the first door body 2 (i.e. the first door body 2 protrudes laterally), and the sealing surface 400 thereof is substantially parallel to the first door body 2. That is, the angle of rotation of the turnover beam 4 between the deployed position and the stowed position is substantially 90 °, although in practice, the angle may be adjusted accordingly as required, and is not limited thereto.

In the present embodiment, the first direction L is exemplified as being vertically upward, i.e., the turning beam 4 extends vertically to be configured as a vertical beam, the turning beam 4 is rotatably connected to the first door body 2 about the vertical axis T, and when the first door body 2 and the second door body 3 are both in the closed state, the turning beam 4 is located at the unfolded position and the free side 402 extends into the rear of the open side (e.g., the 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. Of course, in a modified embodiment, the first direction L may also be changed into a horizontal direction, that is, the turning beam 4 extends horizontally and is configured as a cross beam, such as the door body 2 'and the door body 3' for opening and closing the bottom freezer compartment illustrated in fig. 1, which are arranged as straight-opening drawer type door bodies (i.e., the door body 2 'and the door body 3' are respectively assembled and connected with the freezer compartment drawer and can open and close the corresponding freezer compartment drawer by pushing and pulling back and forth), the door body 2 'and the door body 3' are arranged side by side, and a turning beam is rotatably connected to one of the door body 2 'and the door body 3' around a horizontal axis, and is located at the unfolding position and is used for closing the gap between the door body 2 'and the door body 3' when the door body 2 'and the door body 3' are both in the closed state.

In order to realize the 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) of the turnover beam, the first guide part 51 and the second guide part 52 jointly form a guide mechanism, and the second guide part 52 can be movably matched with the first guide part 51 in the opening and closing process of the first door body 2, so that the turnover beam 4 rotates between the unfolding position and the folding position.

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

Referring to fig. 1 to 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 located at the unfolding position; when the first door body 2 changes from the closed state to the open state, namely in 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 body 2 gradually moves away from the cabinet 1, the corresponding guide protrusion and the guide groove are disengaged, that is, when the first door body 2 is in an open state, the starting portion 521 of the guide protrusion is separated from the open end of the guide groove; when the first door body 2 changes from the open state to the closed state, that is, during the closing process of the first door body 2, the starting part 521 of the guide protrusion enters the guide groove from the open end of the guide groove again, and moves along the guide groove until the starting part 521 reaches the tail end of the guide groove, so that the turnover beam 4 is guided to rotate from the retracted position to the extended position.

As background art proposes, in the prior art, when a door body loaded with a turnover beam is opened, due to the reason that the door opening speed is too fast or the door body is turned over artificially, the turnover beam is often turned over from the retracted position to the extended position by mistake, so that the door is closed abnormally, inconvenience is caused when a user uses the door, and the turnover beam is also damaged due to collision during the door closing.

In order to solve this problem, the locking mechanism of the present embodiment is used to lock the rocker beam 4 at the stowage position at least when the first door body 2 is in the open state.

Specifically, referring to fig. 3 to 8, the locking mechanism includes a linkage 63 movably mounted on the turning beam 4, a locking portion 64 fixedly mounted on the first door 2, and a driving component for driving the linkage 63 to move.

The linkage 63 has an unlocking position and a locking position relative to the flip beam 4, wherein: as shown in fig. 7, in said unlocking position, the linkage 63 disengages the locking portion 64 to allow the turning beam 4 to rotate about the axis T, i.e. to unlock the turning beam 4; in said locking position, the linkage 63 engages 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 and the guide protrusion is movably matched in the guide groove, the driving assembly enables the linkage part 63 to be located at the unlocking position, so that the turnover beam 4 can smoothly rotate along with the opening and closing of the first door body 2 under the action of the guide mechanism;

when the first door 2 is in the open state, the start portion 521 is separated from the opening end of the guide groove, at this time, the driving assembly makes the linkage 63 located at the locking position, and the linkage 63 is engaged with the locking portion 64 to prevent the turning beam 4 from rotating, so that the turning beam 4 is locked at the retracting position.

Therefore, compared with the prior art, when the first door body 2 is in an open state, the problem that the turnover beam 4 is accidentally turned to the unfolding position from the folding position due to human reasons or too high door opening speed can be avoided, and the abnormal problems that the turnover beam 4 is collided and cannot be closed in the closing process of the first door body 2 and the like are further 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 with each other to drive the linkage member 63 to move between the unlocking position and the locking position. From this for the realization of the locking of upset roof beam 4 and unblock function can not lead to producing extra resistance between upset roof beam 4 and the box 1, and the rotation resistance of upset roof beam 4 is too big, upset roof beam 4 upset when avoiding arousing when the first door body 2 closes, the upset of first door body 2 and not in place and cause the problem such as cold leakage.

Further, in this embodiment, when the first door body 2 is in a closed state, the start portion 521 of the guide protrusion stops at the tail end of the guide groove, and the driving assembly makes the linkage 63 be located at the locking position, so that the turnover beam 4 is locked at the unfolding position, thereby preventing the turnover beam 4 from accidentally rebounding due to the opening and closing of the second door body 3, and ensuring that the turnover beam 4 can effectively seal the gap between the first door body 2 and the second door body 3.

Further, one of the first driving portion 61 and the second driving portion 62 is provided as an electromagnet, and the other thereof is provided as a ferromagnetic member fitted with the electromagnet. In the present embodiment, the second driving portion 62 is provided as an electromagnet (for the sake of easy understanding, the electromagnet 62 is used for example below), that is, the electromagnet 62 is provided on the linking member 63; correspondingly, the first driving part 61 is provided as a ferromagnetic part (for ease of understanding, ferromagnetic part 61 is exemplified below), i.e. ferromagnetic part 61 is fixed to the flipping beam 4.

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

Further, the linkage 63 moves in the first direction L between the unlocking position and the locking position, and the moving direction thereof is parallel to the longitudinal extension direction of the turning beam 4, thereby facilitating the position design of the ferromagnetic member 61 and the electromagnet 62, which are arranged 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 turning beam 4 by changing the arrangement positions of the ferromagnetic member 61 and the electromagnet 62.

Specifically, in this embodiment, the starting portion 521 is provided with a hollow cavity 520, 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 cleanness and tidiness, and protect the electromagnet 62 from being contaminated, and the electromagnet 62 is always located below the guide protrusion and does not protrude from the guide protrusion, so as to avoid contact between the electromagnet 62 and the box body 1, and prevent the overturning beam 4 from being overturned in place due to too much resistance in the rotating process.

The ferromagnetic member 61 is disposed at the beginning 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 to the turnover beam 4, and may be fixed between an end surface of the second guide portion 52 and the hollow cavity 520 and shielded by the second guide portion 52.

Preferably, the turnover beam 4 includes a panel 41 configuring the sealing surface 400, a front cover 43 to which the panel 41 is fixedly mounted, a rear cover 45 to which the front cover 43 is snap-fitted, an anti-dew tube 42 provided between the front cover 43 and the panel 41, and an insulation layer 44 provided between the front cover 43 and the rear cover 45.

Wherein, the inner side of the back cover 45 is provided with a clip 451; the interlocking member 63 is provided as a lever structure which is assembled in the clip 451 so as to be movable up and down.

One end of the linkage 63 is provided with a T-shaped groove 631, and 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 and the linkage 63 are fixedly assembled and connected, in a modified embodiment, the electromagnet 62 and the linkage 63 may also be integrally molded by insert molding.

The other end of the interlocking member 63 engages or disengages the locking portion 64. Specifically, the locking portion 64 is formed on the fitting shaft 72, which is provided as a slot or a protrusion disposed around the axis T, and the linking lever 63 is provided with an insertion portion 632 adapted to the locking portion 64. In the present embodiment, the locking portion 64 is a protrusion protruding upward, and the insertion portion 632 is configured as a slot. When the turning beam 4 is at the retracting position and the unfolding position, the inserting part 632 corresponds to the locking part 64 on the circumference of the axis T to be inserted and matched, so that the turning beam can be limited to rotate around the axis T relative to each other, and the turning beam 4 is prevented from rotating relative to the first door body 2; when the turnover beam 4 is located between the retracted position and the extended position, that is, not located between the retracted position and the extended 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 linkage 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, and thus, the turnover beam 4 cannot be locked incorrectly.

Preferably, one of the rear cover 45 and the interlocking member 63 is further provided with a sliding groove, and the other is provided with a fitting portion inserted into the sliding groove to allow the interlocking member 63 to vertically move with respect to the turning beam 4 and prevent the interlocking member 63 from pivoting with respect to the turning beam 4 in the first direction L, whereby it is possible to prevent the locked state of the turning beam 4 from being unstable.

Further, the locking mechanism further includes a cushion pad 62. In this embodiment, the cushion pad 65 is sleeved on the periphery of the electromagnet 62, and may be specifically provided with a rubber gasket. 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 flip beam 4, thereby reducing collision, reducing noise and protecting products. In addition, the cushion pad 65 may also be configured to: when the interlocking member 63 moves in the direction opposite to the first direction L, the cushion pad 65 is sandwiched between the interlocking member 63 and the turning beam 4, thereby reducing collision, reducing noise, and protecting products.

Further, the electromagnet 62 is controlled to be in a first mode or a second mode, so that the linkage 63 moves between the unlocking position and the locking position. The first and second modes represent two different energization 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 device is used for sensing the state of the first door body 2 and transmitting the sensed result to the control device.

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

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

for the door-closing state signal, the sensing device may include a sensing element disposed between the cabinet 1 and the first door 2, so that when the first door 2 and the cabinet 1 are sensed to be in sealing contact, the door-closing state signal is obtained; alternatively, a sensing element disposed at the tail end of the guide slot may be further included, so that the door-closing state signal is obtained when the start portion 521 is sensed to be located at the tail end of the guide slot;

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

for the door opening action signal, the sensing device may include a sensing element disposed between the cabinet 1 and the first door 2, so that the door opening action signal is obtained when the first door 2 and the cabinet 1 are sensed to be released from sealing contact; or, a sensing element arranged at the tail end of the guide slot can be further included, so that the door opening action signal is obtained when the starting part 521 is sensed to be separated from the tail end of the guide slot; or, a sensing element arranged at the door handle of the first door body 2 may be further included, so that when the motion of the user gripping the door handle is sensed, the door opening motion signal is obtained; or, the door opening device can further comprise a sensing element arranged outside the first door body 2, so that when an opening action command meeting a preset condition is sensed, the door opening action signal is obtained;

for the door closing action signal, the sensing device may include a sensing element disposed between the cabinet 1 and the first door 2, so that when the first door 2 and the cabinet 1 are sensed to return to the target position, the door closing state signal is obtained; a sensing element disposed at the open end of the guide slot may be further included so that the door closing motion signal is obtained when the start 521 is sensed to enter the open end of the guide slot.

Each of the sensing elements may be specifically configured to be, 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 applied to sensing the state of the first door 2.

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

The control device is connected to 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 apparatus 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 further include a memory, a timer, and the like. The processor is used for executing arithmetic or logic operation on the acquired data according to the program stored in the memory, for example, controlling the timer to start a timing function according to the related 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, and for example, the processor and the memory and the timer may be implemented in different chips or may also be implemented as a single chip as necessary.

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 closing 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 opening state, the electromagnet 62 is controlled to be in the second mode; the electromagnet 62 is controlled to assume the first mode according 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 energized to generate magnetism, and the other of the first mode and the second mode is a state in which the electromagnet 62 is de-energized to demagnetize. In the embodiment, when the electromagnet 62 is energized to generate magnetism, the electromagnet 62 is coupled to the ferromagnetic member 61 by magnetic attraction to drive the linking member 63 to move along the first direction L; when the electromagnet 62 is de-energized and demagnetized, the linkage 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 opening and closing process and the turning beam 4 is guided to turn over by the guide mechanism, the electromagnet 62 is electrified and generates magnetism, and is matched with the ferromagnetic part 61 through magnetic attraction force, and in view of the matching of the magnetic attraction force, the electromagnet 62 moves towards the ferromagnetic part 61 along a first direction L to drive the linkage part 63 to move along the first direction L, wherein the first direction L is vertical upward, so that the lower end of the linkage part 63 is vertically upward separated from the locking part 64, so that the turning beam 4 can normally rotate;

when the first door body 2 is in a closed state and an open state, the electromagnet 62 is powered off and demagnetized, the magnetic attraction force between the electromagnet 62 and the ferromagnetic part 61 disappears, the electromagnet 62 drives the linkage part 63 to automatically fall under the action of gravity, and the lower end of the linkage part 63 is vertically downwards matched with the locking part 64 so as to lock 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 the retraction position, so that the turnover beam 4 is prevented from being accidentally turned from the retraction position to the expansion position, and 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 further avoided;

(2) the first driving part 61 is arranged on the turnover beam 4, the second driving part 62 is arranged on the linkage part 63, the first driving part 61 and the second driving part 62 interact with each other to drive the linkage part 63 to move between the unlocking position and the locking position, so that the locking and unlocking functions of the turnover beam 4 cannot 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 incomplete turnover of the turnover beam 4 are avoided;

(3) when the first door body 2 is in a closed state, the turnover beam 4 can be locked at an unfolding position, so that the turnover beam 4 is prevented from accidentally rebounding due to the opening and closing of the second door body 3, and the turnover beam 4 can effectively seal a gap between the first door body 2 and the second door body 3;

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

(5) only in the process of turning over the turning beam 4 in the door opening process and the door closing process, the electromagnet 62 is electrified, and the rest of time (the door opening state and the door closing state) is powered off, so that the power consumption is low.

Example 2

Referring to fig. 10 to 11, the present embodiment provides a refrigerator, which is different 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 engages with the lock portion 64 when the interlocking member 63 moves in the direction opposite to the first direction L (for example, vertically downward), whereas disengages from the lock portion 64 when the interlocking member 63 moves in the first direction L; unlike embodiment 2, in this embodiment, the lower end of the linkage 63 is located below the hinge mechanism 70, and engages with the locking portion 64 when the linkage 63 moves in the first direction L (vertically upward for example), whereas disengages from the locking portion 64 when the linkage 63 moves in the direction opposite to the first direction L. That is, the relative positions of the locking part 64 and the interlocking member 63 in this embodiment are different from those in embodiment 1.

Correspondingly, when the first door body 2 is in the opening and closing process and the turning beam 4 is guided by the guide mechanism, the electromagnet 62 is powered off and demagnetized, no magnetic force exists between the electromagnet 62 and the ferromagnetic part 61, the electromagnet 62 drives the linkage 63 to automatically fall under the action of gravity, and the lower end of the linkage 63 vertically falls off the locking part 64, so that the turning beam 4 is unlocked;

when the first door body 2 is in the closed state, the electromagnet 62 is electrified to generate magnetism, and is matched with the ferromagnetic part 61 through magnetic attraction, and in view of the matching of the magnetic attraction, the electromagnet 62 moves towards the ferromagnetic part 61 along the first direction L to drive the linkage 63 to move along the first direction L, wherein the first direction L is vertically upward, so that the lower end of the linkage 63 is vertically upward 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 energized to generate magnetism, and at this time, like the closed state, the lower end of the linkage 63 is vertically matched with the locking part 64 upwards, so that the turnover beam 4 is correspondingly locked at the folding position.

Except for the above, the other technical solutions in this embodiment and the beneficial effects compared to the prior art are the same as those in embodiment 1, and are not described again.

Example 3

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

in the foregoing embodiment 2, when the first door body 2 is in the opening and closing process and the turning beam 4 is guided by the guide mechanism, the electromagnet 62 is powered off and demagnetized, and the linkage 63 automatically falls to the unlocking position under the action of gravity, so as to unlock the turning beam 4; when the first door body 2 is in a closed state and an open state, the electromagnet 62 is electrified to generate magnetism, the electromagnet is matched with the ferromagnetic part 61 through magnetic attraction, and the linkage part 63 vertically moves upwards to a locking position so as to lock the turnover beam 4.

In contrast, in the present embodiment, the locking mechanism includes an additional elastic member 66, and the elastic member 66 may be specifically disposed between the linkage member 63 and the turning beam 4 or between the electromagnet 62 and the turning beam 4, and may be specifically any one of springs or elastic sheets such as a tension spring, a compression spring, and a torsion spring.

Further, when the first door body 2 is in the opening and closing process and the turning beam 4 is guided by the guiding mechanism, the electromagnet 62 is energized to generate magnetism, and is matched with the ferromagnetic part 61 (which is provided as a permanent magnet opposite to the electromagnet 62 in the same polarity) through a magnetic repulsive force, and in view of the matching of the magnetic repulsive force, the electromagnet 62 moves away from the ferromagnetic part 61 in the opposite direction of the first direction L to drive the linkage 63 to also move in the opposite direction of the first direction L, and the first direction L is vertically upward, so that the lower end of the linkage 63 is vertically downward separated from the locking part 64, so that the turning 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 62 and the ferromagnetic member 61 disappears, the linkage member 63 moves along the first direction L under the action of the elastic restoring force of the elastic member 66, and the lower end of the linkage member 63 is upwardly matched with the locking portion 64, so that the turning beam 4 is locked.

To summarize, this embodiment differs from the foregoing embodiment 2 in that: the magnetic force between the electromagnet 62 and the ferromagnetic part 61 is different when the electromagnet is electrified and magnetized, and the reset acting force of the linkage part 63 is different when the electromagnet is cut off and demagnetized. Besides, the remaining technical solutions of the two embodiments are basically the same, so it can be understood that the present embodiment can also achieve the beneficial effects of embodiment 2, and details are not described again.

Example 4

Referring to fig. 13 to 15, the present embodiment provides a refrigerator, which is different from the foregoing embodiment 1 in that: the relative positions and modes of the electromagnet 62 and the ferromagnetic piece 61. Only this difference will be described below, and the rest of the technical contents that are the same as those of the foregoing embodiment 1 will not be described again.

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

Further, in the foregoing embodiment 1, the interlocking member 63 reciprocates between the unlocking position and the locking position along the first direction L, and the turning beam 4 extends along the first direction L and rotates around the axis T along the first direction L; in contrast, in the present embodiment, the turning beam 4 extends in the first direction L and rotates about the axis T in the first direction L, and the interlocking member 63 reciprocates between the unlocking position and the locking position in the direction perpendicular to the first direction L.

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

Specifically, in this embodiment, the locking portion is a jack formed in the matching shaft 72, the linking member 63 is configured as a rod structure, and one end of the linking member 63 can be inserted into the jack to realize the matching between the linking member 63 and the locking portion; of course, in the implementation of the change, 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 unlocking position and the locking position along a horizontal direction, the interlocking member 63 is slidably coupled in the turning beam 4, and an anti-friction surface made of POM (polyoxymethylene) material is preferably disposed at a portion of the interlocking member that is in contact with the turning beam 4 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 de-energized to demagnetize; in contrast, in the present embodiment, one of the first mode and the second mode is that electromagnet 62 is energized to generate magnetism by a reverse current, and the other is that electromagnet 62 is energized to generate magnetism by a forward current.

Specifically, when the first door body 2 is in the process of opening and closing and the turning beam 4 is guided by the guide mechanism, the electromagnet 62 is energized to generate magnetism under reverse current, and is matched with the ferromagnetic piece 61 through magnetic attraction force, and in view of the matching of the magnetic attraction force, the electromagnet 62 moves close to the ferromagnetic piece 61 to drive the linkage piece 63 to separate from the locking part 64, so that the turning beam 4 can normally rotate;

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

Otherwise, the remaining technical solutions of this embodiment are substantially the same as those of embodiment 1, and thus it can be understood that this embodiment can also achieve the beneficial effects of embodiment 1, and will not be described again.

Example 5

Referring to fig. 16, the present embodiment provides a refrigerator, and the embodiment is different 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 the magnetic forces between the two ferromagnetic members and the electromagnet 62 are different in the first mode and in the second mode. Only this difference will be described below, and the rest of the technical contents that are the same as those of the foregoing embodiment 4 will not be described again.

Specifically, in the foregoing embodiment 4, a ferromagnetic member 61 configured as a permanent magnet is provided; in contrast, 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 a permanent magnet and arranged with their homopolar polarities facing each other, the electromagnet 62 is disposed between the two ferromagnetic members 61-1 and 61-2, and the magnetic pole of the electromagnet 62 is 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 order in a direction perpendicular to the first direction L. The electromagnet 62 is also attached to the interlocking member 63 as in embodiment 4, and reciprocates in the direction perpendicular to the first direction L.

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

Specifically, when the first door body 2 is in the opening and closing process and the turning beam 4 is guided by the guide mechanism, the electromagnet 62 is energized and magnetized under the reverse current, and is matched with the ferromagnetic part 61-1 through the magnetic attraction force, meanwhile, the magnetic repulsion force is matched with the ferromagnetic part 61-2, the electromagnet 62 moves towards the right side in the drawing 18 to drive the linkage 63 to separate from the locking part 64, so that the turning beam 4 can normally rotate;

when the first door body 2 is in the closed state and the open state, the electromagnet 62 is energized under a forward current to generate magnetism, and is matched with the ferromagnetic part 61-1 through a magnetic repulsive force, and is matched with the ferromagnetic part 61-2 through a magnetic attractive force, the electromagnet 62 moves towards the left side in the drawing 18 to drive the linkage 63 to approach and be in plug-in fit with the locking part 64, so that the turning beam 4 is locked.

That is, the fundamental difference between the present embodiment and embodiment 4 is that a ferromagnetic member 61-2 is added on the basis of embodiment 4, and the ferromagnetic member 61-2 and the ferromagnetic member 61-1 are in homopolar opposition, thereby facilitating smoother movement of the driving linkage member 63. It can be understood that the present embodiment can also achieve the beneficial effects of embodiment 4, and the description is omitted.

Example 6

Referring to fig. 17, the present embodiment provides a refrigerator, and the embodiment is different from the foregoing embodiment 4 only in that: the specific configuration of the ferromagnetic pieces 61 may vary; an elastic part 66 is additionally arranged; 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 rest of the technical contents that are the same as those of the foregoing embodiment 4 will not be described again.

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

In embodiment 4, the electromagnet 62 is energized and magnetized by a reverse current in the first mode, and energized and magnetized by a forward current in the second mode; in contrast, in the present embodiment, one of the first mode and the second mode is to energize and demagnetize the electromagnet 62, that is, the same as in embodiment 1.

Specifically, compared 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 engaged with the ferromagnetic member 61 through magnetic force to drive the linking 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 disappears, and the linkage 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 to generate magnetism may be specifically set to be a magnetic attraction force, or may be a magnetic repulsion force, and for example, the linkage member 63 when the electromagnet 62 is energized to generate magnetism may be set to move from the locking position to the unlocking position, or may be set to move from the unlocking position to the locking position, and for example, the elastic member 66 may be set to be any one of a tension spring, a compression spring, a torsion spring, or a spring plate. These variations are all variations of the embodiments without departing from the spirit of the present invention.

In the embodiment of the drawings, when the first door body 2 is in the opening and closing process and the guide mechanism guides the turning beam 4, the electromagnet 62 is powered off and demagnetized, and under the action of the elastic restoring force of the elastic member 66, the linkage member 63 moves along the right direction in the drawing, and the linkage member 63 is separated from the locking part 64, so as to unlock the turning beam 4;

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

It can be understood that the present embodiment can also achieve the beneficial effects of embodiment 4, and the description is omitted.

Although the present description is described in terms of embodiments, not every embodiment includes only a single technical solution, and those skilled in the art should take the description as a whole, and the technical solutions in the embodiments may be appropriately combined to form other embodiments that can be understood by those skilled in the art.

The detailed description set forth above is merely a specific description of possible embodiments of the present invention and is not intended to limit the scope of the invention, which is intended to include within the scope of the invention equivalent embodiments or modifications that do not depart from the technical spirit of the present invention.

Claims (14)

1. A refrigerator, comprising:

a case including a main body defining a compartment and a first guide portion provided to the main body;

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

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

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

the linkage piece is movably arranged on the overturning 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 overturning beam to rotate; when the first guide part is separated from the second guide part, the linkage piece is located at a locking position matched with the locking part, so that the overturning beam is locked at the retracting 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 with each other to drive the linkage piece to move between the unlocking position and the locking position.

2. The refrigerator according to claim 1, wherein 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 cooperating with the electromagnet; the electromagnet is controlled to be in a first mode or a second mode.

3. The refrigerator of claim 2, 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 starting part of the guide bulge stops at the tail end of the guide groove;

when the first door body is opened and closed, the guide bulge moves in the guide groove to guide the turnover beam to rotate;

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

4. The refrigerator according to claim 3, wherein one of the first mode and the second mode is to energize the electromagnet to generate magnetism, and the other is to de-energize the electromagnet to de-magnetize;

when the electromagnet is electrified to generate magnetism, the electromagnet is matched with the ferromagnetic part through magnetic force so as to drive the linkage part to move along a first direction;

when the electromagnet is powered off and demagnetized, the linkage piece moves in 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.

5. The refrigerator as claimed in claim 4, wherein the linkage moves between the unlock position and the lock position along the first direction, and the turnover beam extends lengthwise along the first direction and rotates relative to the first door body around an axis along the first direction;

one of the electromagnet and the ferromagnetic piece is fixedly arranged on the linkage piece, 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 arranged in the first direction in a facing manner.

6. The refrigerator as claimed in claim 5, wherein the second guide part is the guide protrusion fixedly disposed at one end of the turning beam in a lengthwise direction, and the electromagnet is movably disposed in the hollow cavity of the start part and shielded by the guide protrusion; the ferromagnetic part is fixedly arranged on the starting part.

7. The refrigerator of claim 3, wherein one of the first mode and the second mode is that the electromagnet is energized to generate magnetism by a forward current, and the other is that the electromagnet is energized to generate magnetism by a reverse current;

when the electromagnet is electrified under forward current to generate magnetism, the electromagnet is matched with the ferromagnetic part through first magnetic force to drive the linkage part to move forward;

when the electromagnet is electrified to generate magnetism under reverse current, the electromagnet is matched with the ferromagnetic part through second magnetic force to drive the linkage part 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, and the forward direction and the reverse direction are opposite.

8. The refrigerator of claim 7, wherein the number of the ferromagnetic pieces is set to two and two of the ferromagnetic pieces are fixed to the turning beam in homopolar opposition; the electromagnet is fixedly arranged on the linkage piece, is positioned between the two ferromagnetic pieces and is respectively matched with the two ferromagnetic pieces with different magnetic forces when electrified to generate magnetism.

9. The refrigerator of claim 8, wherein the flip beam extends lengthwise in a first direction and rotates about an axis in the first direction relative to the first door body, the forward direction and the reverse direction both being perpendicular to the first direction;

the ferromagnetic part, the electromagnet and the other ferromagnetic part are sequentially arranged in the forward direction.

10. The refrigerator as claimed in claim 3, wherein when the first door is in a closed state, the linkage is located at a locking position cooperating with the locking portion, so that the turnover beam is locked at the unfolding position.

11. The refrigerator according to claim 10, further comprising:

the sensing device senses a state signal of the first door body;

and 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 received state signal.

12. The refrigerator of claim 11, 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.

13. The refrigerator of claim 10, wherein the flip 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 rotatably connected around the axis;

the locking part is formed on the matching shaft and is provided with a slot or a bulge arranged around the axis, and the linkage part is provided with an inserting part matched with the locking part;

when the turnover beam is in a retracted position and a deployed position, the insertion part and the locking part correspond to each other in position on the circumference of the axis so as to be capable of being matched in an insertion manner; when the turnover beam is located between the retracted position and the deployed position, the insertion part and the locking part are arranged on the circumference of the axis in a staggered mode.

14. The refrigerator as claimed in claim 1, wherein the linkage member is configured as a rod structure, one end of the linkage member is assembled with the second driving portion or is integrally insert-molded, and the other end of the linkage member is engaged with or disengaged from the locking portion;

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

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