Bidirectional selective opening and closing mechanism and refrigerator

Abstract

The utility model discloses a kind of two-way selective opening and closing mechanism and double-door refrigerator, belong to the technical field of house car refrigerator, comprising: door seat, and two symmetrical settings and can be relative to the movement of lock seat, sliding limiting component and rotary limiting component are equipped between door seat and each lock seat;Sliding limiting component is used to guide door seat and lock seat to slide along predetermined path when relatively rotating, and have branch path for selectively sliding to different side of door seat;Rotary limiting component is used to limit its radial separation when door seat and lock seat relatively rotate to closed position, and allow its relatively separate along the branch path of sliding limiting component when rotating to open position;Lock seat is installed with the door opening mechanism for driving it swing relative to door seat.This two-way selective opening and closing mechanism, through the synergistic effect of sliding limiting component and rotary limiting component, creatively integrates path selection and rotation support function.

Description

Technical Field

[0001] This utility model relates to the field of RV refrigerator technology, specifically to a bidirectional selective opening and closing mechanism and a refrigerator. Background Technology

[0002] Traditional side-by-side refrigerators typically have two separate doors, each opening in one direction via hinges fixed to the left and right sides of the refrigerator body. This structure means each door can only rotate around a fixed hinge axis, and the opening direction is determined during installation and cannot be changed. While refrigerators are now also being used in motorhomes, the limited space in a motorhome means that the refrigerator's placement and surrounding space (such as walls and cabinets) may restrict the opening angle of one side of the door, making it inconvenient for users to access items. For example, when space is limited on the right side of the refrigerator, opening the right-side door can become very difficult.

[0003] To address the aforementioned issues, existing technologies have introduced refrigerator designs that allow a single door to open in both directions. These designs typically employ a complex hinge mechanism, enabling the door to rotate around both the left and right axes. Users can freely choose the opening direction based on available space, enhancing convenience and flexibility.

[0004] However, existing bidirectional opening and closing mechanisms still have some shortcomings. First, their structures are often complex, with numerous parts, leading to high manufacturing costs and inconvenient assembly. Second, the reliability and stability of the mechanism when switching opening directions are crucial; if the locking mechanism is poorly designed, the cabinet door may wobble or fail to seal properly when closed, or move unevenly or jam during opening. Furthermore, some designs fail to achieve simultaneous unlocking and locking on both sides, resulting in less smooth opening operations or the risk of damage to the mechanism due to misoperation.

[0005] Therefore, there is an urgent need in the field for a more rationally structured, reliable, and smooth-operating bidirectional selective opening and closing mechanism to overcome the aforementioned deficiencies in the prior art. Summary of the Invention

[0006] The purpose of this invention is to address the problems existing in the prior art by providing a bidirectional selective opening and closing mechanism and a double-door refrigerator.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is: a bidirectional selective opening and closing mechanism, comprising: a door seat, and two symmetrically arranged lock seats that can move relative to the door seat. A sliding limiting component and a rotation limiting component are provided between the door seat and each lock seat. The sliding limiting component is used to guide the door seat and the lock seat to slide along a predetermined path when they rotate relative to each other, and has branch paths for the door seat to selectively slide to different sides. The rotation limiting component is used to restrict the radial separation of the door seat and the lock seat when they rotate relative to each other to the closed position, and to allow them to separate relative to each other along the branch paths of the sliding limiting component when they rotate to the open position. An opening mechanism is installed on the lock seat to drive it to swing relative to the door seat.

[0008] Preferably, the sliding limiting assembly includes a door post fixed on the door seat and a switching groove formed in the lock seat for the door post to slide; the switching groove has a connecting end and a separating end for the door post to slide to different sides.

[0009] Preferably, the rotation limiting assembly includes an inner ring door hinge fixed on the door seat and an outer ring arc-shaped guide rail concentrically arranged with the inner ring door hinge, as well as an arc-shaped door hinge hole disposed on the lock seat and slidingly engaged with the inner ring door hinge;

[0010] In the closed position, the outer arc-shaped guide rail and the arc-shaped door hinge hole are directly opposite each other in the circumferential direction;

[0011] In the open position, the arc-shaped door hinge hole on the open side is separated from the outer arc-shaped guide rail, while the arc-shaped door hinge hole on the other side rotates relative to the outer arc-shaped guide rail, changing from being circumferentially opposite to partially overlapping circumferentially.

[0012] Preferably, the door opening mechanism includes two steering rudders and a door lock slidably connected to the lock seat. The steering rudders are driven to rotate by external means. The door lock is connected to the lock seat by a first spring. One end of the steering rudder is provided with a transmission component. The transmission component drives the lock seat to rotate by interacting with the doorpost. The other end of the steering rudder is provided with an unlocking mechanism that drives the door lock to open.

[0013] Preferably, the transmission assembly includes a push rod with one end connected to the steering rudder, and a push block with the other end oscillatingly connected to the lock seat. The push block drives the lock seat to rotate by interacting with the door post.

[0014] Preferably, the unlocking mechanism includes a first unlocking component and a second unlocking component disposed on the steering rudder. The first unlocking component is used to open the door lock on this side, and the second unlocking component is used to open the door lock on the opposite side. The door lock has guide ramps that cooperate with the first unlocking component and the second unlocking component respectively. The unlocking mechanism also includes a guide plate assembly disposed on the lock seat, which guides the first unlocking component and the second unlocking component.

[0015] Preferably, the first unlocking assembly includes a first push rod with one end mounted on the steering rudder, and a first push plate connected to the other end of the first push rod. The first push plate moves along the guide groove formed by the guide plate assembly on this side. When the first push rod moves, the first push plate slides along the guide ramp and lifts the door lock on this side.

[0016] Preferably, the second unlocking assembly includes a second push rod with one end mounted on the steering rudder, and a second push plate connected to the end of the second push rod away from the steering rudder. The second push plate moves along the guide groove formed by the guide plate assembly on the opposite side. When the second push rod moves, the second push plate slides along the guide ramp and lifts the door lock on the opposite side.

[0017] This utility model also provides a refrigerator, including a pair of bidirectional selective opening and closing mechanisms as described in the above scheme, a refrigerator cabinet and a cabinet door. The pair of bidirectional selective opening and closing mechanisms are respectively installed at the upper and lower ends of the refrigerator cabinet. Two door frames with openings on one side are symmetrically installed on the cabinet door. An unlocking push frame is slidably connected inside the door frame. The unlocking push frame is provided with an opening latch. The opening latch is connected to the steering rudder through a connecting rod. A door seal is installed on one side of the opening of the door frame. The door seal has an avoidance hole for the connecting rod to pass through.

[0018] Preferably, a second spring is provided between the door seal and the unlocking push frame.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. This bidirectional selective opening and closing mechanism creatively integrates path selection and rotational support functions through the synergistic action of the sliding limit component and the rotational limit component. In the closed state, the mechanism achieves stable locking and effective sealing through radial constraints; at the moment of opening, the gatepost slides into different branch paths in the switching groove, automatically completing the selection and disengagement on the opening side, and forming a stable rotational fulcrum on the non-opening side. The entire mechanism operates smoothly and logically, achieving complex bidirectional opening and closing functions with a simple structure, significantly reducing the complexity of parts and manufacturing costs.

[0021] 2. This bidirectional selective opening and closing mechanism transforms a user's single pushing action into three precisely coordinated mechanical actions through components such as the unlocking push frame and steering rudder: first, the first unlocking component lifts the lock on this side; second, the transmission component moves the door post, driving the lock seat to rotate and select the opening path; and third, the second unlocking component remotely lifts the lock on the opposite side. This integrated design of one-drive-three-action ensures synchronization of unlocking and direction switching during the door opening process, avoiding jamming or misoperation caused by uncoordinated actions, thus improving user experience and mechanism reliability.

[0022] 3. This bidirectional selective opening and closing mechanism efficiently converts the horizontal movement of the push rod into the vertical movement of the door lock through the cooperation of the push plate and the guide ramp on the door lock, achieving space saving and precise function triggering. Furthermore, by utilizing the flexibility of the push rod and its precise guidance within the guide plate assembly, remote, synchronous unlocking control from one operating side to the other is achieved. This design not only simplifies the mechanism and eliminates complex linkage systems but also ensures consistency in the locking state on both sides, enhancing the overall structural rigidity and operational stability of the machine. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0024] Figure 2 This utility model Figure 1 A magnified structural diagram of point A in the middle.

[0025] Figure 3 This is a schematic diagram of the cross-sectional structure of the door frame of this utility model.

[0026] Figure 4 This utility model Figure 3 A magnified structural diagram at point B in the middle.

[0027] Figure 5 This is a schematic diagram of the sliding limit component of this utility model.

[0028] Figure 6 This is a schematic diagram of the rotation limiting component and door opening mechanism of this utility model.

[0029] Figure 7 This is a schematic diagram of the structure of this utility model when it is closed.

[0030] Figure 8 This is a schematic diagram illustrating the action of opening the door according to this utility model.

[0031] Figure 9 This is a schematic diagram of the unlocking push frame and its connection structure of this utility model.

[0032] Figure 10This is a schematic diagram of the structure of this utility model installed on a refrigerator.

[0033] In the diagram: 100, door seat; 200, lock seat; 310, door post; 320, switching slide; 321, connecting end; 322, separating end; 410, inner ring door hinge; 420, outer ring arc-shaped guide rail; 430, arc-shaped door hinge hole; 500, steering rudder; 610, door lock; 620, first spring; 710, push door rod; 720, push door lever; 810, first flat push rod; 811, first push plate; 820, second flat push rod; 821, second push plate; 900, guide plate assembly; 1000, refrigerator cabinet; 1100, cabinet door; 1200, door frame; 1300, unlocking push frame; 1400, door seal; 1410, clearance hole; 1500, door latch; 1600, second spring; 1700, rudder seat; 1800, connecting rod. Detailed Implementation

[0034] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0035] Please refer to Figures 1 to 8 A bidirectional selective opening and closing mechanism in this solution includes: a door seat 100, and two symmetrically arranged lock seats 200 that can move relative to the door seat 100. A sliding limit component and a rotation limit component are provided between the door seat 100 and each lock seat 200.

[0036] The sliding limit assembly is used to guide the door seat 100 and the lock seat 200 to slide along a predetermined path when they rotate relative to each other, and has branch paths for the door seat 100 to selectively slide to different sides;

[0037] The rotation limit assembly is used to limit the radial separation of the door seat 100 and the lock seat 200 when they are rotated relative to each other to the closed position, and to allow them to separate relative to each other along the branch path of the sliding limit assembly when they are rotated to the open position.

[0038] The lock base 200 is equipped with an opening mechanism for swinging it relative to the door seat 100.

[0039] In the above technical solution, by setting a sliding limit component and a rotation limit component, stable sliding and precise positioning of the door seat 100 and the lock seat 200 along a predetermined path are achieved during relative rotation. The branch path in the sliding limit component allows the door seat 100 to selectively separate from the lock seat 200 on different sides according to the operation, thereby realizing the bidirectional opening function of the mechanism. The rotation limit component restricts radial separation in the closed position, ensuring the connection rigidity and stability of the mechanism in the closed state; in the open position, it allows separation along the branch path, thus providing the necessary degrees of freedom of movement for the unidirectional opening of the door.

[0040] Please refer to Figure 5 , Figure 7 and Figure 8 Preferably, the sliding limit assembly includes a door post 310 fixed on the door seat 100 and a switching groove 320 opened in the lock seat 200 for the door post 310 to slide; the switching groove 320 has a connecting end 321 and a separating end 322 for the door post 310 to slide to different sides.

[0041] In the above technical solution, the cooperation between the door post 310 and the switching slide 320 provides a simple and reliable sliding limit implementation scheme. The design of the connecting end 321 and the separating end 322 of the switching slide 320 clearly defines the sliding trajectory of the door post 310, so that the relative movement between the door seat 100 and the lock seat 200 is precisely guided, thereby reliably realizing the bidirectional selection switching action.

[0042] Please refer to Figure 1 , Figure 2 and Figure 5 Preferably, the rotation limiting assembly includes an inner ring door hinge 410 fixed on the door seat 100 and an outer ring arc-shaped guide rail 420 concentrically arranged with the inner ring door hinge 410, as well as an arc-shaped door hinge hole 430 disposed on the lock seat 200 and slidingly engaged with the inner ring door hinge 410.

[0043] In the closed position, the outer arc-shaped guide rail 420 and the arc-shaped door hinge hole 430 are directly opposite each other in the circumferential direction;

[0044] In the open position, the arc-shaped door hinge hole 430 on the open side is separated from the outer arc-shaped guide rail 420, while the arc-shaped door hinge hole 430 on the other side rotates relative to the outer arc-shaped guide rail 420, changing from being circumferentially opposite to partially overlapping circumferentially.

[0045] In the above technical solution, a compact rotation limiting scheme is provided by the concentric cooperation of the inner ring door hinge 410, the outer ring arc-shaped guide rail 420, and the arc-shaped door hinge hole 430. In the closed position, the outer ring arc-shaped guide rail 420 and the arc-shaped door hinge hole 430 are circumferentially aligned, forming a radial constraint, effectively preventing the door seat 100 and the lock seat 200 from separating in the closed state, and enhancing the connection strength and sealing performance. In the open position, the separation on the opening side provides a channel for the door to disengage, while the partial overlap on the other side restricts the lock seat 200 on that side between the inner ring door hinge 410 and the outer ring arc-shaped guide rail 420, thus forming a stable rotation fulcrum and ensuring smooth rotation of the door during the opening process.

[0046] Please refer to Figure 1 , Figure 5 and Figure 6 Preferably, the door opening mechanism includes two steering rudders 500 and a door lock 610 slidably connected to the lock seat 200. The steering rudders 500 are driven to rotate by external means. The door lock 610 is connected to the lock seat 200 by a first spring 620. One end of the steering rudder 500 is provided with a transmission component. The transmission component drives the lock seat 200 to rotate by interacting with the door post 310. The other end of the steering rudder 500 is provided with an unlocking mechanism that drives the door lock 610 to open the door.

[0047] In the above technical solution, a complete drive and execution mechanism is integrated by setting up a steering rudder 500, a door lock 610, and transmission and unlocking components. This achieves the linkage function of simultaneously triggering the rotation of the lock seat 200 and the unlocking of the door lock 610 through a single operation. The first spring 620 provides an automatic reset force for the door lock 610, ensuring that the door lock 610 remains in the locked position when not in operation, thus improving the reliability and security of the mechanism. The setting of the first and second unlocking components allows the steering rudder 500 on one side to simultaneously control the door lock 610 on both sides, providing the necessary unlocking guarantee for achieving bidirectional selective opening and closing.

[0048] Please refer to Figure 6 , Figure 7 and Figure 8 Preferably, the transmission assembly includes a push rod 710 connected at one end to the steering rudder 500, and a push block 720 oscillatingly connected to the lock seat 200 at the other end of the push rod 710. The push block 720 drives the lock seat 200 to rotate by interacting with the door post 310.

[0049] In the above technical solution, the transmission structure of the push door rod 710 and the push door lever 720 effectively converts the rotational motion of the steering rudder 500 into a force on the door post 310, thereby driving the lock seat 200 to rotate.

[0050] Please refer to Figure 3 , Figure 4 and Figure 5 Preferably, the unlocking mechanism includes a first unlocking component and a second unlocking component disposed on the steering rudder 500. The first unlocking component is used to open the door lock 610 on this side, and the second unlocking component is used to open the door lock 610 on the opposite side. The door lock 610 has guide ramps that cooperate with the first unlocking component and the second unlocking component respectively. The unlocking mechanism also includes a guide plate assembly 900 disposed on the lock seat 200, which is used to guide the first unlocking component and the second unlocking component.

[0051] In the above technical solution, the guide ramp allows the horizontally moving push plate to generate a vertical component force, thereby converting the linear motion of the push rod into the lifting motion of the door lock 610, realizing the conversion and transmission of motion. The symmetrically arranged guide plate group 900 provides a precise moving track for the push plates of the first and second unlocking components, ensuring that they can accurately cooperate with the guide ramps of the corresponding door lock 610, improving the accuracy and reliability of the action.

[0052] Please refer to Figure 5 , Figure 7 and Figure 8 Preferably, the first unlocking assembly includes a first push rod 810 with one end mounted on the steering rudder 500, and a first push plate 811 connected to the other end of the first push rod 810. The first push plate 811 moves along the guide groove formed by the guide plate assembly 900 on this side. When the first push rod 810 moves, the first push plate 811 slides along the guide slope and lifts the door lock 610 on this side.

[0053] In the above technical solution, the cooperation of the first push rod 810, the first push plate 811, the guide slope, and the guide plate group 900 constitutes a specific and effective lifting mechanism for the lock 610 on this side, realizing the synchronous unlocking of the lock 610 on this side during operation.

[0054] Preferably, the second unlocking assembly includes a second push rod 820 with one end mounted on the steering rudder 500. The end of the second push rod 820 away from the steering rudder 500 is connected to a second push plate 821. The second push plate 821 moves along the guide groove formed by the opposite guide plate assembly 900. When the second push rod 820 moves, the second push plate 821 slides along the guide slope and lifts up the door lock 610 on the opposite side.

[0055] In the above technical solution, the cooperation of the second push rod 820, the second push plate 821, the opposite guide plate group 900, and the guide slope constitutes a cross-type linkage unlocking mechanism, which enables remote driving and unlocking of the opposite door lock 610 when operating one side, ensuring the synchronization of the states of the two door locks 610 during the opening process.

[0056] It should be noted that, since the first push rod 810, the second push rod 820, and the connecting rod 1800 all have sufficient length and flexibility, and in conjunction with the limiting effect of the guide plate assembly 900, the first push plate 811 and the second push plate 821 can move stably along the guide groove formed by the guide plate assembly 900 when the steering rudder 500 rotates.

[0057] Please refer to Figures 9 to 10 This utility model also provides a refrigerator, including a pair of bidirectional selective opening and closing mechanisms as described above, a refrigerator cabinet 1000 and a cabinet door 1100. The pair of bidirectional selective opening and closing mechanisms are respectively installed at the upper and lower ends of the refrigerator cabinet 1000. Two door sleeves 1200 with openings on one side are symmetrically installed on the cabinet door 1100. An unlocking push frame 1300 is slidably connected inside the door sleeve 1200. An opening latch 1500 is provided on the unlocking push frame 1300. The opening latch 1500 is connected to the steering rudder 500 through a connecting rod 1800. A door seal 1400 is installed on one side of the opening of the door sleeve 1200. An avoidance hole 1410 is provided on the door seal 1400 for the connecting rod 1800 to pass through. A rudder seat 1700 is installed on the door seal 1400. The steering rudder 500 is rotatably connected to the rudder seat 1700.

[0058] In the above technical solution, the bidirectional selective opening and closing mechanism is applied to a refrigerator, and by being arranged in pairs, it provides a stable and reliable bidirectional opening and closing function for the refrigerator door 1100. The door frame 1200, unlocking push frame 1300, door seal 1400, connecting rod 1800, and clearance hole 1410 effectively combine the opening and closing mechanism with the structure of the refrigerator door 1100, so that the action of the internal mechanism can be triggered by pushing the unlocking push frame 1300, providing an intuitive user experience and a reasonable structural layout.

[0059] Preferably, a second spring 1600 is provided between the door seal 1400 and the unlocking push frame 1300.

[0060] In the above technical solution, the second spring 1600 provides an automatic reset force for the unlocking push frame 1300, ensuring that after the operator releases their hand, the unlocking push frame 1300 and the transmission mechanism connected thereto can automatically return to the initial position, preparing for the next operation, thus improving the convenience of use and the integrity of the mechanism.

[0061] Work style:

[0062] The refrigerator door 1100 has a set of bidirectional selective opening and closing mechanisms at both its upper and lower ends. These two mechanisms are rigidly connected via the door 1100 and operate synchronously. When the refrigerator door is closed, the two door posts 310 on the door seat 100 are positioned at the connecting end 321 of the switching groove 320 within the lock seat 200. Simultaneously, the door lock 610, slidably connected to the lock seat 200, is in the lowered position under the force of the first spring 620, thus blocking the movement of the door posts 310. At this time, the outer arc-shaped guide rail 420 on the door seat 100 and the arc-shaped door hinge hole 430 on the lock seat 200 are circumferentially aligned. Because the door 1100 is blocked by the door posts 310, it cannot move or rotate, thereby closing the door 1100. The entire drive transmission mechanism is in the reset state: the unlocking push frame 1300 is located on the outermost side inside the door frame 1200 under the action of the second spring 1600; the connecting rod 1800, steering rudder 500, push door rod 710 and push door lever 720 all remain stationary.

[0063] When the user needs to open the left cabinet door 1100, the left unlocking push frame 1300 is pushed inward, which compresses the second spring 1600 and slides within the door frame 1200, causing the door latch 1500 and connecting rod 1800 to move inward. The connecting rod 1800 drives the steering rudder 500 to rotate, and the steering rudder 500 simultaneously triggers three linked mechanical actions: First, the steering rudder 500 drives the first horizontal push rod 810 to translate, and the first horizontal push rod 810 drives the first push plate 811 to contact the guide slope on the door lock 610 on this side and slide along it, converting the horizontal thrust into a vertical upward component force, driving the door lock 610 to overcome the elastic force of the first spring 620 and slide upward, so that the door lock 610 no longer forms an obstruction in the movement path of the door post 310; Second, the steering rudder 500 drives the push door rod 710 to swing, and the push door rod 710 in turn drives the push door lever 720 to move, causing it to swing within the connecting end 321 of the switching slide groove 320. During the swinging process, the push-door lever 720 is blocked by the left doorpost 310, causing the left lock seat 200 to rotate relative to the door seat 100. Simultaneously, the doorpost 310 slides from the connecting end 321 into the track of the left separating end 322. Thirdly, the steering rudder 500 drives the second flat push rod 820 to move. The second flat push rod 820 drives the second push plate 821 to slide along the guide groove of the guide plate assembly 900. The second push plate 821 lifts the right door lock 610, thereby unlocking the right doorpost 310. During the rotation of the left lock seat 200, the cabinet door 1100 will rotate, and the rotation of the cabinet door 1100 will in turn drive the right lock seat 200 to rotate. When the right lock seat 200 rotates, the right doorpost 310 slides relative to the switch slide groove 320, entering the left separating end 322 from the connecting end 321.

[0064] During this process, the left-side arc-shaped door hinge hole 430 and the outer arc-shaped guide rail 420 change from being directly opposite each other to being separated, while the right-side arc-shaped door hinge hole 430 rotates relative to the outer arc-shaped guide rail 420, changing from being circumferentially opposite to partially overlapping circumferentially. The radial movement of the right-side arc-shaped door hinge hole 430 is constrained between the inner ring door hinge 410 and the outer arc-shaped guide rail 420, thus allowing it to rotate only around the inner ring door hinge 410. At this point, the left cabinet door 1100 is unlocked and forms an effective rotation fulcrum at the right-side inner ring door hinge 410, allowing the user to rotate it outwards to open.

[0065] When the cabinet door 1100 is closed, the user pushes the door back to the closed position and then releases the unlocking push frame 1300. Under the reset action of the second spring 1600, the unlocking push frame 1300 moves outward, causing the connecting rod 1800 to reset. The reset of the connecting rod 1800 causes the steering rudder 500 to rotate. The steering rudder 500, on the one hand, causes the first flat push rod 810 to move, causing the first push plate 811 to disengage from the guide slope of the door lock 610. The door lock 610 falls under the action of the first spring 620, blocking the path of the left door pillar 310 again. On the other hand, the steering rudder 500 causes the push door rod 710 to swing, and then the push door lever 720 swings back to its initial position through the push door rod 710. At the same time, the steering rudder 500 causes the second flat push rod 820 and the second push plate 821 to reset, so that the right door lock 610 can be reset under the action of the first spring 620, thus blocking the right door pillar 310. Finally, all components were returned to the off state, ready for the next operation.

[0066] The opening and closing mechanism of the right cabinet door 1100 is symmetrical, and is achieved by pushing the unlocking push frame 1300 on the right side.

[0067] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bidirectional selective opening and closing mechanism, characterized in that, include: A door seat (100) and two symmetrically arranged lock seats (200) that can move relative to the door seat (100), wherein a sliding limit component and a rotation limit component are provided between the door seat (100) and each lock seat (200); The sliding limit assembly is used to guide the door seat (100) and the lock seat (200) to slide along a predetermined path when they rotate relative to each other, and has branch paths for the door seat (100) to selectively slide to different sides; The rotation limiting assembly is used to restrict radial separation of the door seat (100) and the lock seat (200) when they are rotated relative to each other to the closed position, and to allow them to separate relative to each other along the branch path of the sliding limiting assembly when they are rotated to the open position. The lock seat (200) is equipped with an opening mechanism for swinging it relative to the door seat (100).

2. The bidirectional selective opening and closing mechanism according to claim 1, characterized in that, The sliding limit assembly includes a door post (310) fixed on the door seat (100) and a switching groove (320) opened in the lock seat (200) for the door post (310) to slide; the switching groove (320) has a connecting end (321) and a separating end (322) for the door post (310) to slide to different sides.

3. The bidirectional selective opening and closing mechanism according to claim 1, characterized in that, The rotation limiting assembly includes an inner ring door hinge (410) fixed on the door seat (100) and an outer ring arc-shaped guide rail (420) concentrically arranged with the inner ring door hinge (410), as well as an arc-shaped door hinge hole (430) disposed on the lock seat (200) and slidingly engaged with the inner ring door hinge (410). In the closed position, the outer arc-shaped guide rail (420) and the arc-shaped door hinge hole (430) are directly opposite each other in the circumferential direction; In the open position, the arc-shaped door hinge hole (430) on the open side is separated from the outer arc-shaped guide rail (420), while the arc-shaped door hinge hole (430) on the other side rotates relative to the outer arc-shaped guide rail (420), changing from being directly opposite each other in the circumferential direction to partially overlapping in the circumferential direction.

4. The bidirectional selective opening and closing mechanism according to claim 1, characterized in that, The door opening mechanism includes two steering rudders (500) and a door lock (610) slidably connected to the lock seat (200). The steering rudders (500) are driven to rotate by external means. The door lock (610) is connected to the lock seat (200) by a first spring (620). One end of the steering rudder (500) is provided with a transmission component. The transmission component drives the lock seat (200) to rotate by interacting with the door post (310). The other end of the steering rudder (500) is provided with an unlocking mechanism that drives the door lock (610) to open the door.

5. The bidirectional selective opening and closing mechanism according to claim 4, characterized in that, The transmission assembly includes a push rod (710) with one end connected to the steering rudder (500), and the other end of the push rod (710) is provided with a push block (720) that is oscillatingly connected in the lock seat (200). The push block (720) drives the lock seat (200) to rotate by interacting with the door post (310).

6. The bidirectional selective opening and closing mechanism according to claim 4, characterized in that, The unlocking mechanism includes a first unlocking component and a second unlocking component disposed on the steering rudder (500). The first unlocking component is used to open the door lock (610) on this side, and the second unlocking component is used to open the door lock (610) on the opposite side. The door lock (610) has guide ramps that cooperate with the first unlocking component and the second unlocking component respectively. The unlocking mechanism also includes a guide plate assembly (900) disposed on the lock seat (200). The guide plate assembly (900) is used to guide the first unlocking component and the second unlocking component.

7. The bidirectional selective opening and closing mechanism according to claim 6, characterized in that, The first unlocking assembly includes a first push rod (810) with one end mounted on the steering rudder (500), and a first push plate (811) connected to the other end of the first push rod (810). The first push plate (811) moves along the guide groove formed by the guide plate group (900) on this side. When the first push rod (810) moves, the first push plate (811) slides along the guide slope and lifts the door lock (610) on this side.

8. The bidirectional selective opening and closing mechanism according to claim 6, characterized in that, The second unlocking assembly includes a second push rod (820) with one end mounted on the steering rudder (500). The end of the second push rod (820) away from the steering rudder (500) is connected to a second push plate (821). The second push plate (821) moves along the guide groove formed by the guide plate group (900) on the opposite side. When the second push rod (820) moves, the second push plate (821) slides along the guide ramp and lifts the door lock (610) on the opposite side.

9. A refrigerator, characterized in that, The refrigerator includes a pair of bidirectional selective opening and closing mechanisms as described in any one of claims 4-8, a refrigerator cabinet (1000), and a cabinet door (1100). The pair of bidirectional selective opening and closing mechanisms are respectively installed at the upper and lower ends of the refrigerator cabinet (1000). Two door frames (1200) with openings on one side are symmetrically installed on the cabinet door (1100). An unlocking push frame (1300) is slidably connected inside the door frame (1200). An opening latch (1500) is provided on the unlocking push frame (1300). The opening latch (1500) is connected to the steering rudder (500) through a connecting rod (1800). A door seal (1400) is installed on one side of the opening of the door frame (1200). An avoidance hole (1410) is provided on the door seal (1400) for the connecting rod (1800) to pass through.

10. The refrigerator according to claim 9, characterized in that, A second spring (1600) is provided between the door seal (1400) and the unlocking push frame (1300).

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