Hinge and refrigeration device having the same

Abstract

The application discloses a hinge and a refrigeration device, which connect a door body to a box body; the hinge comprises a fixed seat fixed to the box body, the fixed seat being provided with a first sliding groove and a sliding block in sliding connection with the first sliding groove; a movable seat fixed to the door body, one end of the movable seat being connected with a hinge shaft; a linkage assembly arranged between the sliding block and the movable seat; wherein the movable seat has a linkage state in linkage with the linkage assembly and a disengagement state in disengagement with the linkage assembly; when the movable seat is in the linkage state, in the process of rotating the movable seat around the hinge shaft, the linkage assembly drives the movable seat to move synchronously with the sliding block; when the movable seat is in the disengagement state, the movable seat can rotate in place around the hinge shaft; the door body can rotate freely in place around the hinge shaft and is not limited by the linkage assembly, thereby facilitating user use.

Description

Technical Field

[0001] This invention relates to the field of home appliance technology, and more particularly to a hinge and a refrigeration device having the hinge. Background Technology

[0002] As society develops and people's quality of life gradually improves, the demand for built-in refrigerators that can fit into relatively deep and narrow spaces (such as cabinets) is becoming increasingly prominent. However, in actual use, due to the influence of the hinged structure between the refrigerator door and the refrigerator body in traditional refrigerators, when the refrigerator door is opened, the hinged side often protrudes from the side wall of the refrigerator body. When such a refrigerator is placed in a deep and narrow space, the refrigerator door will interfere with the deep and narrow space or other objects placed in the deep and narrow space. This not only affects the opening range of the refrigerator door, but also damages the surface of the refrigerator door, affecting its aesthetics.

[0003] To avoid interference when the door is opened, the structure of the hinge connecting the box and the door is usually improved so that the door can rotate while producing a certain displacement in a preset direction. However, the existing hinge structure is very complex, and the opening angle is limited by the hinge, resulting in a small opening degree, which is inconvenient for users.

[0004] In view of this, it is necessary to improve the existing hinges and the refrigeration devices with such hinges in order to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a hinge and a refrigeration device having the hinge.

[0006] To achieve one of the above-mentioned objectives, the present invention provides a hinge for connecting a door to a housing; the hinge includes:

[0007] A fixed base is fixed to the housing, and the fixed base has a first sliding groove and a slider that is slidably connected to the first sliding groove.

[0008] A movable seat is fixed to the door body, and one end of the movable seat is connected to a hinge shaft;

[0009] A linkage component is provided between the slider and the movable seat;

[0010] The movable seat has a linked state that is linked with the linkage component and a disengaged state that is disengaged from the linkage component. When the movable seat is in the linked state, during the process of the movable seat rotating around the hinge axis, the linkage component drives the movable seat to move synchronously with the slider. When the movable seat is in the disengaged state, the movable seat can rotate in place around the hinge axis.

[0011] As a further improvement of one embodiment of the present invention, the linkage component includes a linkage rod rotatably connected to the hinge shaft and a transmission structure that drives the linkage rod and the slider. When the linkage rod rotates around the hinge shaft, the transmission structure drives the linkage rod to move synchronously with the slider. When the movable seat is in the linkage state, the movable seat and the linkage rod are relatively fixed. When the movable seat is in the disengaged state, the movable seat can disengage from the linkage rod.

[0012] As a further improvement of one embodiment of the present invention, the linkage rod is provided with a second sliding groove extending along its length direction, the movable seat is provided with a third sliding groove extending along its length direction, and the transmission structure includes a first rotating shaft that cooperates with the second sliding groove. When the movable seat is in the linkage state, the second sliding groove and the third sliding groove are aligned, and the first rotating shaft is located in the second sliding groove and the third sliding groove; when the movable seat is in the disengaged state, the first rotating shaft disengages from the third sliding groove.

[0013] As a further improvement of one embodiment of the present invention, when the linkage rod rotates about the hinge axis away from the fixed seat, the first rotating shaft moves to the end of the second slide groove and the third slide groove near the hinge axis. The movable seat has a notch communicating with the third slide groove on the side facing the linkage rod. The notch is used to allow the first rotating shaft to disengage from or enter the third slide groove.

[0014] As a further improvement of one embodiment of the present invention, when the transmission structure drives the slider to move along a preset direction to one end of the first groove, the first rotating shaft is located at the notch.

[0015] As a further improvement of one embodiment of the present invention, an alignment structure is provided between the linkage rod and the movable seat. When the movable seat rotates in place toward the fixed seat about the hinge axis, the alignment structure is used to align the relative positions between the linkage rod and the movable seat.

[0016] As a further improvement of one embodiment of the present invention, the alignment structure includes an alignment post disposed on one of the movable seat and the linkage rod, and an alignment groove disposed on the other, wherein the alignment groove has an inlet and outlet for the alignment post to enter and exit.

[0017] As a further improvement to one embodiment of the present invention, the transmission structure includes:

[0018] A first connecting rod, one end of which is rotatably connected to the hinge shaft, and the other end of which is rotatably connected to the slider;

[0019] The second link has one end rotatably connected to the fixed base and the other end movably connected to the linkage rod.

[0020] The third link has one end rotatably connected to the slider and the other end rotatably connected to the second link.

[0021] As a further improvement of one embodiment of the present invention, one of the third link and the second link has a limiting groove, and the other has a limiting post that cooperates with the limiting groove, and the limiting post is always engaged in the limiting groove.

[0022] As a further improvement of one embodiment of the present invention, one of the movable seat and the linkage component is provided with a clearance groove, and the other is provided with a convex shaft that cooperates with the clearance groove. The clearance groove is an arc-shaped groove with the hinge shaft as the center. When the linkage component is in the folded state, the convex shaft is located in the clearance groove.

[0023] As a further improvement of one embodiment of the present invention, the first slide extends along the length direction of the fixed seat, and the first slide has an outer end close to the hinge axis and an inner end far from the hinge axis. When the movable seat is in the linkage state, during the process of the movable seat rotating around the hinge axis, the linkage component drives the slider to move from the outer end to the inner end, thereby driving the movable seat to move in the same direction.

[0024] To achieve the above-mentioned objectives, the present invention also provides a refrigeration device, including a housing, a door, and the aforementioned hinge.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows: the movable seat in the hinge of the present invention is configured to have a linkage state that is linked with the linkage component and a disengagement state that is disengaged from the linkage component. When the movable seat is in the disengagement state, the movable seat can rotate in place around the hinge axis, that is, the door can rotate freely in place around the hinge axis without being restricted by the linkage component, which is convenient for users. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the hinge structure in the first embodiment of the present invention;

[0027] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0028] Figure 3 yes Figure 1 Enlarged view of point B in the middle;

[0029] Figure 4 yes Figure 1 A schematic diagram of the linkage components in the folded state;

[0030] Figure 5 yes Figure 1 Schematic structural diagram after the movable seat in

[0031] Figure 6 is Figure 1 Schematic structural diagram after the movable seat in

[0032] Figure 7 Schematic structural diagram of the hinge in the second embodiment of the present invention (the linkage component is in the folded state);

[0033] Figure 8 is Figure 7 Schematic structural diagram after the movable seat in the hinge rotates a preset angle around the hinge axis in place;

[0034] Figure 9 is Figure 7 Schematic structural diagram after the movable seat in

[0035] Figure 10 is Figure 7 Schematic structural diagram after the movable seat in

[0036] Figure 11 Schematic structural diagram of the refrigeration device in the present invention. Specific embodiments

[0037] The following will Figure 1-11 be described in detail with reference to the specific embodiments shown in the attached drawings. However, these embodiments do not limit the present invention, and any structural, method, or functional transformation made by those of ordinary skill in the art based on these embodiments is included within the protection scope of the present invention.

[0038] The terms used herein to represent relative spatial positions are for the purpose of facilitating the description of the relationship between one unit or feature and another unit or feature as shown in the drawings. The terms of relative spatial positions may be intended to include different orientations of the device in use or operation other than the orientation shown in the figures. For example, if the device in the figure is flipped, the unit described as being "below" or "beneath" other units or features will be located "above" other units or features. Therefore, the exemplary term "below" can encompass both the upper and lower orientations. The device may be oriented in other ways (rotated 90 degrees or other orientations), and the spatially related descriptive terms used herein will be interpreted accordingly.

[0039] Refer Figures 1-6As shown, the hinge 10 in the first embodiment of the present invention is used to connect the door to the cabinet. In this embodiment, the hinge 10 is applied to a vertical refrigerator and the refrigerator door is a left-right opening door for specific explanation.

[0040] Of course, it should be emphasized that the hinge 10 of this embodiment is not only applicable to refrigerators, but also to other scenarios, such as cabinets, wine cabinets, wardrobes, etc. This invention is illustrated by taking the application of the hinge 10 to a refrigerator as an example, but it is not limited thereto.

[0041] The hinge 10 includes a fixed base 1 for fixing to the housing, a movable base 2 for fixing to the door, and a linkage assembly 3. The fixed base 1 has a first sliding groove 11 and a slider 12 slidably connected to the first sliding groove 11. The movable base 2 has a hinge axis 21, and the movable base 2 can rotate around the hinge axis 21, so that the door fixed to the movable base 2 can rotate around the hinge axis 21 to open or close the housing. The linkage assembly 3 is disposed between the slider 12 and the movable base 2 to link the movable base 2 and the slider 12.

[0042] Specifically, the movable seat 2 has a linked state that is linked with the linkage component 3 and a disengaged state that is disengaged from the linkage component 3. When the movable seat 2 is in the linked state, during the rotation of the movable seat 2 around the hinge axis 21, the linkage component 3 drives the movable seat 2 to move synchronously with the slider 12 a preset distance. When the movable seat 2 is in the disengaged state, the movable seat 2 is not restricted by the linkage component 3, that is, the movable seat 2 can rotate freely in place around the hinge axis 21, and the movement trajectory of the door can be controlled.

[0043] It is understood that the direction and preset distance of movement of the movable seat 2 driven by the linkage component 3 are related to the direction and distance of movement of the slider 12. The extension direction of the first slide groove 11, the movement direction of the slider 12, and the length of the first slide groove 11 can be designed according to specific needs. For example, to prevent the door from colliding with the wall / cabinet on the opening side when it is opened, the extension direction of the first slide groove 11 can be designed to extend in a direction perpendicular to the wall / cabinet on the opening side (extending in the length direction of the fixed seat 1), and the movement direction of the slider 12 when the door is opened is to move along the first slide groove 11 in a direction away from the wall / cabinet on the opening side. If the door is to move outwards in a direction away from the opening side to increase the opening degree, the extension direction of the first slide groove 11 can be designed to extend in a direction perpendicular to the wall / cabinet on the opening side (extending in the length direction of the fixed seat 1), and the movement direction of the slider 12 when the door is opened is to move along the first slide groove 11 in a direction towards the wall / cabinet on the opening side.

[0044] In this embodiment, the first slide groove 11 extends along the length of the fixed base 1. The end of the first slide groove 11 near the hinge axis 21 is defined as the outer end, and the end away from the hinge axis 21 is defined as the inner end. The movable base 2 and the linkage component 3 are in a linked state. When the movable base 2 rotates open around the hinge axis 21 in a direction away from the fixed base 1, the slider 12 moves along the first slide groove 11 from the outer end to the inner end, causing the door to move inward. That is, the door moves inward a preset distance while rotating and opening, preventing collisions between the door and the wall or cabinet on the open side. Of course, this is not a limitation. In other embodiments, the movable base 2 and the linkage component 3 can also be configured to be in a linked state. When the movable base 2 rotates open around the hinge axis 21 in a direction away from the fixed base 1, the slider 12 moves along the first slide groove 11 from the inner end to the outer end, causing the door to move outward. That is, the door moves outward a preset distance while rotating and opening, increasing the opening angle of the door and making it easier for the user to view the items inside the refrigerator.

[0045] Specifically, the preset distance by which the linkage component 3 moves the movable seat 2 can be adjusted by adjusting the length of the first slide groove 11.

[0046] It should be noted that "outer" refers to the outside of the refrigerator, while "inner" is a direction defined relative to "outer".

[0047] It is understood that when the hinge 10 is applied to a refrigerator with left and right doors, the length direction of the aforementioned fixing base 1 is the left-right direction, and the aforementioned outer end refers to the end of the first slide groove 11 corresponding to the opening side of the door. When the hinge 10 is applied to a refrigerator with top and bottom doors, the length direction of the aforementioned fixing base 1 is the top-bottom direction, and the aforementioned outer end refers to the end of the first slide groove 11 corresponding to the opening side of the door.

[0048] Specifically, the fixing base 1 includes a first plate 13 for fixing to the box body, a connecting plate 14 vertically disposed on the first plate 13, and the first sliding groove 11 disposed on the connecting plate 14.

[0049] The first plate 13 is fixed to the side of the box body facing the door so that the connecting plate 14 protrudes towards the door body.

[0050] It is understood that the position of the first slide groove 11 is set according to the relative positional relationship between the connecting plate 14 and the door body; that is, the first slide groove 11 is set on the side of the first plate 13 corresponding to the door body. For example, when the hinge 10 is installed at the bottom of the upright refrigerator and the door body is a left-right opening door, the door body is located above the hinge 10, therefore, the first slide groove 11 is set on the upper surface of the connecting plate 14.

[0051] Furthermore, the linkage component 3 has a folded state and an open state. When the movable seat 2 and the linkage component 3 are in the linkage state, during the process of the movable seat 2 rotating and opening around the hinge axis 21 in a direction away from the fixed seat 1, the linkage component 3 switches from the folded state to the open state, driving the slider 12 to move along the slide groove, and at the same time driving the movable seat 2 to move with the slider 12.

[0052] In this embodiment, when the linkage component 3 is in the folded state, the door is in the closed state. At this time, the movable seat 2 and the linkage component 3 are in a linkage state. When the door is opened, the movable seat 2 rotates around the hinge axis 21 in a direction away from the fixed seat 1. At the same time, the linkage component 3 switches from the folded state to the open state under the drive of the movable seat 2. That is, when the door is opened, the door rotates around the hinge axis 21 and moves inward synchronously with the slider 12 to prevent the door from colliding with the wall / cabinet on the open side during the opening process.

[0053] In one specific embodiment, the linkage component 3 includes a linkage rod 34 rotatably connected to the hinge shaft 21 and a transmission structure that drives the linkage rod 34 and the slider 12. When the linkage rod 34 rotates around the hinge shaft 21, the transmission structure can drive the slider 12 to move along the first slide groove 11, causing the linkage rod 34 to move in the same direction as the hinge shaft 21 during rotation. The movable seat 2, which is in a linkage state with the linkage rod 34, moves synchronously with the linkage rod 34.

[0054] When the movable seat 2 is in the linkage state, the movable seat 2 is fixed relative to the linkage rod 34, thereby the movable seat 2 can move synchronously with the linkage rod 34. When the movable seat 2 is in the disengaged state, the movable seat 2 is disengaged from the linkage rod 34, thereby the movable seat 2 can rotate freely around the hinge axis 21 without being restricted by the linkage component 3.

[0055] In one specific embodiment, the transmission structure includes a first connecting rod 31, a second connecting rod 32, and a third connecting rod 33. The first connecting rod 31, the second connecting rod 32, the third connecting rod 33, and the linkage rod 34 form a four-bar linkage structure to realize the linkage between the slider 12 and the linkage rod 34. Of course, this is not a limitation.

[0056] Specifically, one end of the first connecting rod 31 is rotatably connected to the hinge shaft 21, and the other end is rotatably connected to the slider 12. One end of the second connecting rod 32 is rotatably connected to the end of the fixed seat 1 corresponding to the inner end, and the other end is movably connected to the linkage rod 34. One end of the third connecting rod 33 is rotatably connected to the slider 12, and the other end is rotatably connected to the second connecting rod 32. When the linkage assembly 3 is in the folded state, the first connecting rod 31, the second connecting rod 32, the third connecting rod 33, and the linkage rod 34 are stacked to reduce the distance between the door and the box, so that the door is in the closed state.

[0057] During the opening process, when the door body drives the movable seat 2 to rotate around the hinge axis 21, the linkage component 3 drives the slider 12 to move inward, causing the movable seat 2 to move inward, so that the door body moves inward to avoid the door body colliding with the wall or cabinet on the open side when the door is opened.

[0058] In one specific embodiment, the first connecting rod 31 and the third connecting rod 33 are rotatably connected to the slider 12 via the same pivot. Of course, this is not a limitation.

[0059] In one specific embodiment, the linkage rod 34 is provided with a second sliding groove 341 extending along its length direction, and the second connecting rod 32 has a first rotating shaft 321 that cooperates with the second sliding groove 341. The cooperation between the first rotating shaft 321 and the second sliding groove 341 allows the second connecting rod 32 to be movably connected to the linkage rod 34. During the process of the linkage rod 34 rotating and opening around the hinge axis 21 in a direction away from the fixed base 1, while driving the slider 12 to move inward, the first rotating shaft 321 moves along the second sliding groove 341 towards the end of the second sliding groove 341 closer to the hinge axis 21. This reduces the rotation angle of the door body during the inward movement of the slider 12, enhancing the stability of the door body's movement. Of course, this is not a limitation; in other embodiments, the first rotating shaft 321 may also be configured to be rotatably connected only to the linkage rod 34.

[0060] Furthermore, the movable seat 2 is provided with a third sliding groove 22 extending along its length. When the movable seat 2 and the linkage rod 34 are in a linked state, the third sliding groove 22 is aligned with the second sliding groove 341, and the first rotating shaft 321 simultaneously cooperates with the second sliding groove 341 and the third sliding groove 22. When the first rotating shaft 321 disengages from the third sliding groove 22, the movable seat 2 and the linkage rod 34 are in a disengaged state.

[0061] That is, the movable seat 2 and the linkage rod 34 can switch between the linkage state and the disengagement state through the cooperation between the first rotating shaft 321 and the third sliding groove 22. The structure is simple, easy to set up, and low in cost.

[0062] It is understandable that during the door opening process, when the movable seat 2 and the linkage rod 34 are in a linked state, as the movable seat 2 continues to rotate around the hinge axis 21 to further open the door body 30, the linkage component 3 drives the slider 12 to move inward, while the first rotating shaft 321 moves along the second slide groove 341 and the third slide groove 22 towards the end of the second slide groove 341 and the third slide groove 22 closer to the hinge axis 21.

[0063] Furthermore, the movable seat 2 is provided with a notch 23 communicating with the third slide groove 22 on the side facing the linkage rod 34. The notch 23 is used to allow the first rotating shaft 321 to disengage from or enter the third slide groove 22. When the first rotating shaft 321 moves along the third slide groove 22 to disengage from the third slide groove 22 through the notch 23, the movable seat 2 and the linkage rod 34 are in a disengaged state. The movable seat 2 can rotate in place around the hinge axis 21, that is, the door body 30 can rotate freely in place around the hinge axis 21, increasing the opening degree of the door body.

[0064] Specifically, when the linkage component 3 drives the slider 12 to move along the preset direction to one end of the first slide groove 11, the first rotating shaft 321 is located at the notch 23. That is, in this embodiment, when the linkage component 3 drives the slider 12 to move along the first slide groove 11 to the inner end, the first rotating shaft 321 is located at the notch 23. That is, after the door 30 completes the inward movement during the opening process, the first rotating shaft 321 is located at the notch 23. At this time, if the door continues to open, the first rotating shaft 321 will disengage from the third slide groove 22 from the notch 23, causing the movable seat 2 to switch to the disengaged state. Thus, the door 30 can enter a state of free rotation around the hinge axis 21, which is convenient for the user to take out items.

[0065] Furthermore, the movable seat 2 has an inclined surface 24 on the side facing the linkage rod 34, which extends from the end of the third slide groove 22 away from the hinge shaft 21 toward the hinge shaft 21 and in a direction away from the linkage rod 34. The inclined surface 24 extends to the position of the notch 23, so that the first rotating shaft 321 can enter and exit the third slide groove 22 through the notch 23.

[0066] Furthermore, an alignment structure 4 is provided between the movable seat 2 and the linkage rod 34. When the movable seat 2 rotates around the hinge axis 21 in place toward the fixed seat 1, the alignment structure 4 is used to align the relative position between the linkage rod 34 and the movable seat 2, thereby enhancing the stability of the hinge 10 during operation.

[0067] In one specific embodiment, the alignment structure 4 includes an alignment post 41 disposed on one of the movable seat 2 and the linkage rod 34, and an alignment groove 42 disposed on the other. The alignment groove 42 has an inlet and outlet for the alignment post 41 to enter and exit. In this embodiment, after the movable seat 2 rotates in place toward the fixed seat 1 about the hinge axis 21 until the alignment post 41 abuts against the groove wall of the alignment groove 42, the second slide groove 341 and the third slide groove 22 are aligned.

[0068] Furthermore, one of the third link 33 and the second link 32 is provided with a limiting groove 321, and the other is provided with a limiting block 331 that cooperates with the limiting groove 321. When the linkage component 2 switches between the open state and the folded state, the limiting block 331 is always engaged in the limiting groove 321, which can enhance the stability of the relative movement between the first rotating shaft 321 and the second sliding groove 341, and enhance the stability of the hinge 10.

[0069] Specifically, the limiting groove 321 is an arc-shaped groove with the rotation center between the third link 33 and the second link 32 as the center. When the linkage assembly 3 switches from the folded state to the open state, the limiting block 331 moves relative to the limiting groove 321.

[0070] Furthermore, the fixed base 1 is also provided with a protrusion 15, which is located on the same side of the connecting plate 14 as the first sliding groove 11. After the linkage component 3 drives the slider 12 to move to the inner end, the first connecting rod 31 abuts against the protrusion 15 to restrict the rotation of the first connecting rod 31, thereby enhancing the stability of the door body 30 to rotate freely in place around the hinge axis 21.

[0071] Furthermore, the hinge 10 also includes a docking post 5 disposed on the movable seat 2 for fixing the movable seat 2 relative to the door body, so as to realize docking with the corresponding structure on the door body and fix the movable seat 2 to the door body.

[0072] Further, please refer to Figure 11 As shown, the present invention also provides a refrigeration device 100, the refrigeration device 100 including a housing 20, a door 30 for opening and closing the housing 20, and a hinge 10 for connecting the housing 20 and the door 30.

[0073] The hinge 10 is the same as described above, and will not be repeated here.

[0074] In this embodiment, the refrigeration device 100 is a vertical refrigerator with left and right doors. Of course, it should be emphasized that the refrigeration device 100 can also be a vertical refrigerator with top and bottom doors or a horizontal freezer, etc.

[0075] The opening and closing process of the refrigeration device 100 with the hinge 10 is described below:

[0076] In the first stage of opening the door 30 which is in the closed state, the door 30 rotates around the hinge axis 21 in a direction away from the box 20, while moving inward a preset distance with the slider 12 under the action of the linkage component 3;

[0077] After the door body 30 has moved inward, the movable seat 2 is in a disengaged state, and the door body 30 can rotate freely around the hinge axis 21 in place;

[0078] When the door 30 is closed from the open state, the door 30 first rotates around the hinge axis 21 in place toward the direction of the box 20 until the movable seat 2 is in the linkage state;

[0079] After the door is closed until the movable seat 2 is in the linkage state, the door body 30 rotates around the hinge axis 21 in the direction closer to the box body 20. At the same time, under the action of the linkage component 3, the door body 30 moves outward by a preset distance with the slider 12 and then the door body 30 is in the closed state.

[0080] It is understood that the preset distance for the door body 30 to move inward and the preset distance for it to move outward can both be preset by adjusting the length of the first slide groove 11.

[0081] The aforementioned door body 30 has moved inward, meaning that the slider 12 has moved to the inner end. At this time, the first rotating shaft 321 is located at the notch 23, which facilitates the first rotating shaft 321 to disengage from the third sliding groove 22 through the notch 23.

[0082] The aforementioned closing of the door to the state where the movable seat 2 is in linkage means that the door is closed until the first rotating shaft 321 enters the third sliding groove 22 through the notch 23. It can be understood that after the alignment post 41 abuts against the groove wall of the alignment groove 42, the third sliding groove 22 aligns with the second sliding groove 341, facilitating the entry of the first rotating shaft 321 into the third sliding groove 22.

[0083] Please refer to Figures 7-10 As shown, the hinge 10a is shown in the second embodiment of the present invention. For ease of explanation, the structures in the second embodiment that are similar or the same as those in the first embodiment are given the same or similar numbers, and the structures in the second embodiment that are the same as those in the first embodiment will not be described again here.

[0084] The difference between the hinge 10a in the second embodiment of the present invention and the hinge 10 in the first embodiment is that: one of the movable seat 2a and the linkage rod 34 is provided with a clearance groove 25, and the other is provided with a convex shaft that cooperates with the clearance groove 25. The clearance groove 5 is an arc-shaped groove with the hinge shaft 21 as the center. The convex shaft cooperates with the clearance groove 25, so that the movable seat 2 can rotate independently around the hinge shaft 21 relative to the linkage rod 34.

[0085] In one specific embodiment, when the door 30 is in the closed state, the convex shaft engages with the recessed groove 25. That is, when the movable seat 2a rotates around the hinge axis 21 in a direction away from the fixed seat 1, with the engagement of the convex shaft and the recessed groove 25, the movable seat 2a first rotates around the hinge axis 21 in place by a preset angle, and then the movable seat 2a enters a linkage state with the linkage rod 34. Thus, when opening the door, the door 30 can first rotate around the hinge axis 21 in a direction away from the housing 20 by a preset angle, and in the final stage of closing the door, the door 30 can rotate around the hinge axis 21 in a direction closer to the housing 20 by a preset angle. This is suitable for doors 30 with a flip beam and makes it easier to open and close the door 30.

[0086] It is understood that the aforementioned preset angle is determined by the length of the clearance groove 25.

[0087] In one specific embodiment, the clearance groove 25 is provided on the movable seat 2a, and the convex shaft is the first rotating shaft 321, which simplifies the structure of the hinge 10a.

[0088] In the embodiment where the clearance groove 25 is provided on the movable seat 2a and the movable seat 2a is provided with the third sliding groove 22, the clearance groove 25 is provided at one end of the third sliding groove 22 away from the hinge shaft 21, and the clearance groove 25 is connected to the third sliding groove 22.

[0089] It is understood that in this embodiment, the alignment structure 4 is achieved after the movable seat 2a rotates around the hinge axis 21 toward the fixed seat 1 until the first rotating shaft 321 enters the clearance groove 25 from the third sliding groove 22, thus aligning the movable seat 2a with the linkage rod 34.

[0090] The hinge 10a in the second embodiment of the present invention is the same as the hinge 10 in the first embodiment except for the differences mentioned above, and will not be described again here.

[0091] Further, please refer to Figure 11 As shown, the present invention also provides a refrigeration device 100, the refrigeration device 100 including a housing 20, a door 30 for opening and closing the housing 20, and a hinge 10a for connecting the housing 20 and the door 30.

[0092] The hinge 10a is the hinge 10a in the second embodiment of the present invention described above, and will not be described again here.

[0093] In this embodiment, the refrigeration device 100 is a vertical refrigerator with left and right doors. Of course, it should be emphasized that the refrigeration device 100 can also be a vertical refrigerator with top and bottom doors or a horizontal freezer, etc.

[0094] The opening and closing process of the refrigeration device 100 with the hinge 10a is described below:

[0095] When the door 30, which is in a closed state, is opened, the door 30 first rotates around the hinge axis 21 by a preset angle until the movable seat 2a is in a linked state;

[0096] After the movable seat 2a is in the linkage state, the door body 30 continues to rotate around the hinge axis 21 in a direction away from the box body 20, while moving inward a preset distance with the slider 12 under the action of the linkage component 3;

[0097] After the door body 30 has moved inward, the movable seat 2a is in a detachable state, and the door body 30 can rotate freely around the hinge axis 21 in place;

[0098] When the door 30 is closed from the open state, the door 30 first rotates around the hinge axis 21 in place toward the direction of the box 20 until the movable seat 2a and the linkage rod 34 are in a linkage state;

[0099] After the door is closed until the movable seat 2a and the linkage rod 34 are in a linked state, the door body 30 rotates around the hinge axis 21 in a direction closer to the box body 20. At the same time, under the action of the linkage component 3, it moves outward a preset distance with the slider 12 until the movable seat 2a and the linkage rod 34 are in a non-linked state.

[0100] After the movable seat 2a and the linkage rod 34 are in a non-linkage state, the door 30 rotates in place around the hinge axis 21 toward the box 20 by a preset angle and then the door 30 is in a closed state.

[0101] It is understandable that during the opening process, the door body 30 mentioned above first rotates around the hinge axis 21 at a preset angle until the movable seat 2a and the linkage rod 34 are in a linked state. That is, the door body 30 rotates around the hinge axis 21 until the first rotating shaft 321 enters the third sliding groove 22 from the clearance groove 25. At this time, the third sliding groove 22 is aligned with the second sliding groove 341.

[0102] The preset distances for the inward and outward movement of the door 30 can be preset by adjusting the length of the first slide groove 11.

[0103] The completion of the inward movement of the aforementioned door body 30 means that the slider 12 moves to the inner end, and the first rotating shaft 321 is located at the notch 23.

[0104] The aforementioned closing of the door to the point where the movable seat 2a and the linkage rod 34 are in a linked state means that the door is closed to the point where the first rotating shaft 321 enters the third sliding groove 22 through the notch 23. At this time, the third sliding groove 22 is aligned with the second sliding groove 341.

[0105] The aforementioned movable seat 2a and the linkage rod 34 are in a non-linkage state, that is, during the closing process, the first rotating shaft 321 enters the clearance groove 25 from the third sliding groove 22.

[0106] In summary, in the hinge 10 of the present invention, by setting the movable seat 2 to a disengaged state that can be detached from the linkage component 2, the movable seat 2 can rotate in place around the hinge axis 21 after the movable seat 2 is in the disengaged state; this reduces the restriction on the opening degree of the door 30 and makes it easier for users to use.

[0107] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, for example, if the technologies in different embodiments can be used in combination to achieve the corresponding effects simultaneously, the solutions are also within the protection scope of the present invention. Those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A hinge for connecting a door to a housing; characterized in that, The hinge includes: A fixed base is fixed to the housing, and the fixed base has a first sliding groove and a slider that is slidably connected to the first sliding groove. A movable seat is fixed to the door body, and one end of the movable seat is connected to a hinge shaft; A linkage component is provided between the slider and the movable seat; The movable seat has a linkage state that is linked with the linkage component and a disengagement state that is disengaged from the linkage component. When the movable seat is in the linkage state, during the process of the movable seat rotating around the hinge axis, the linkage component drives the movable seat to move synchronously with the slider. When the movable seat is in the disengagement state, the movable seat can rotate in place around the hinge axis. The linkage assembly includes a linkage rod rotatably connected to the hinge shaft and a transmission structure that drives the linkage rod and the slider. When the linkage rod rotates around the hinge shaft, the transmission structure drives the linkage rod to move synchronously with the slider. When the movable seat is in the linkage state, the movable seat and the linkage rod are relatively fixed. When the movable seat is in the disengaged state, the movable seat can disengage from the linkage rod.

2. The hinge according to claim 1, characterized in that, The linkage rod is provided with a second slide groove extending along its length, and the movable seat is provided with a third slide groove extending along its length. The transmission structure includes a first rotating shaft that cooperates with the second slide groove. When the movable seat is in the linkage state, the second slide groove and the third slide groove are aligned, and the first rotating shaft is located in the second slide groove and the third slide groove. When the movable seat is in the disengaged state, the first rotating shaft disengages from the third slide groove.

3. The hinge according to claim 2, characterized in that, When the linkage rod rotates about the hinge axis away from the fixed seat, the first rotating shaft moves to the end of the second and third sliding grooves near the hinge axis. The movable seat has a notch on the side facing the linkage rod that communicates with the third sliding groove. The notch is used to allow the first rotating shaft to disengage from or enter the third sliding groove.

4. The hinge according to claim 3, characterized in that, When the transmission structure drives the slider to move along a preset direction to one end of the first groove, the first rotating shaft is located at the notch.

5. The hinge according to claim 3, characterized in that, An alignment structure is provided between the linkage rod and the movable seat. When the movable seat rotates around the hinge axis toward the fixed seat, the alignment structure is used to align the relative positions between the linkage rod and the movable seat.

6. The hinge according to claim 5, characterized in that, The alignment structure includes an alignment post disposed on one of the movable seat and the linkage rod, and an alignment groove disposed on the other, wherein the alignment groove has an inlet and outlet for the alignment post to enter and exit.

7. The hinge according to claim 1, characterized in that, The transmission structure includes: A first connecting rod, one end of which is rotatably connected to the hinge shaft, and the other end of which is rotatably connected to the slider; The second link has one end rotatably connected to the fixed base and the other end movably connected to the linkage rod. The third link has one end rotatably connected to the slider and the other end rotatably connected to the second link.

8. The hinge according to claim 7, characterized in that, One of the third link and the second link has a limiting groove, and the other has a limiting post that cooperates with the limiting groove. The limiting post is always engaged in the limiting groove.

9. The hinge according to claim 1, characterized in that, One of the movable seat and the linkage assembly is provided with a clearance groove, and the other is provided with a convex shaft that cooperates with the clearance groove. The clearance groove is an arc-shaped groove with the hinge shaft as the center. When the linkage assembly is in the folded state, the convex shaft is located in the clearance groove.

10. The hinge according to claim 1, characterized in that, The first slide extends along the length of the fixed seat. The first slide has an outer end close to the hinge axis and an inner end away from the hinge axis. When the movable seat is in the linkage state, during the process of the movable seat rotating around the hinge axis, the linkage component drives the slider to move from the outer end to the inner end, thereby driving the movable seat to move in the same direction.

11. A refrigeration device, comprising a housing and a door, characterized in that, The refrigeration device further includes the hinge as described in any one of claims 1-10.

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