A hinge mechanism and a case assembly

Abstract

The application relates to a hinge mechanism and a box assembly. The hinge mechanism comprises a supporting seat, a movable seat and a linkage assembly. The linkage assembly comprises a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod. One end of the first connecting rod and one end of the second connecting rod are rotatably connected to the supporting seat, one end of the third connecting rod and one end of the fourth connecting rod are rotatably connected to the movable seat, the other end of the first connecting rod is rotatably connected to the other end of the third connecting rod, the other end of the fourth connecting rod is rotatably connected to the first connecting rod, and the other end of the second connecting rod is rotatably connected to the fourth connecting rod. A limiting lug is arranged at the hinge joint of the first connecting rod and the third connecting rod, the fourth connecting rod is provided with a limiting groove matched with the limiting lug, and when the movable seat is opened to a predetermined angle relative to the supporting seat, the limiting lug is clamped in the limiting groove. The hinge mechanism can not only realize an ultra-large stroke, but also can realize the adjustment of the stroke of the hinge mechanism by using its own parts, so as to reduce the production cost.

Description

Technical Field

[0001] This application belongs to the field of hinge mechanism technology, specifically relating to a hinge mechanism and a housing assembly. Background Technology

[0002] Currently, home appliances are mostly presented as standalone products. However, as people's requirements for their home environment continue to increase, more and more home appliances are required to be integrated with home furnishings and decorations, leading to the emergence of more and more built-in home appliances. The key technology of built-in home appliances often lies in their hinges. However, existing hinges often require additional structural components to adjust the hinge travel, resulting in higher hinge production costs. Summary of the Invention

[0003] This application provides a hinge mechanism and a cooling device to solve the technical problem of high hinge production costs.

[0004] To solve the above-mentioned technical problems, this application adopts a technical solution as follows: a hinge mechanism, comprising: a support base; a movable base; and a linkage assembly. The linkage assembly pivotally connects the support base and the movable base. The linkage assembly includes a first link, a second link, a third link, and a fourth link. One end of the first link and one end of the second link are respectively rotatably connected to the support base. One end of the third link and one end of the fourth link are respectively rotatably connected to the movable base. The other end of the first link is rotatably connected to the other end of the third link, and the other end of the fourth link is rotatably connected to the first link. The other end of the second link is rotatably connected to the fourth link. A limiting protrusion is provided at the hinge joint of the first link and the third link. The fourth link has a limiting groove that matches the limiting protrusion. When the movable base is opened to a predetermined angle relative to the support base, the limiting protrusion is engaged in the limiting groove.

[0005] According to one embodiment of this application, a first fixing pin is provided at the hinge joint of the first connecting rod and the third connecting rod. The first fixing pin is fixed relative to the first connecting rod, and the third connecting rod is rotatably connected to the first fixing pin. The limiting protrusion is fixedly provided on the outer sleeve of the first fixing pin.

[0006] According to one embodiment of this application, the limiting protrusion has a cam structure, the end of the first fixing pin is provided with a serrated portion, the first connecting rod has a serrated groove corresponding to the serrated portion, and the first fixing pin is adjustablely fixed to the first connecting rod by cooperating with the serrated portion and the serrated groove.

[0007] According to one embodiment of this application, the linkage component further includes a self-locking part, which is disposed at the end of the second connecting rod that is hinged to the support seat. A locking block is formed on the side of the movable seat near the self-locking part. When the movable seat is closed relative to the support seat, the locking block and the self-locking part engage to lock the movable seat.

[0008] According to one embodiment of this application, the self-locking part includes: a main body rotatably disposed at one end of the second connecting rod that is hinged to the support seat; a latch disposed on the main body and located on the side of the main body near the movable seat, wherein the latch and the latch block engage when the movable seat is closed relative to the support seat; an elastic member disposed on the main body to drive the latch to rotate in a first direction to engage with the latch block; and an abutment block disposed on the main body and located on the side of the main body near the support seat, wherein the elastic member can drive the main body to rotate until the abutment block abuts against the second connecting rod.

[0009] According to one embodiment of this application, the buckle has an arc-shaped surface on the side facing the buckle block, and the buckle block has a repulsion surface on the side facing the buckle. During the process of the movable seat rotating relative to the support seat to close, the repulsion surface contacts the arc-shaped surface and drives the buckle to rotate in a second direction opposite to the first direction.

[0010] According to one embodiment of this application, the support base includes two opposing support walls, the first connecting rod includes two opposing first side walls, the second connecting rod includes two opposing second side walls, the first side walls and the second side walls are respectively hinged to the support walls, one end of the fourth connecting rod is rotatably disposed between the two first side walls, and the other end is hinged to the movable seat, and one end of the third connecting rod is rotatably disposed between the two second side walls, and the other end is hinged to the movable seat.

[0011] According to one embodiment of this application, the movable seat includes two third sidewalls arranged opposite to each other. A first through hole and a second through hole are provided on the third sidewalls. The distance between the first through hole and the support seat is less than the distance between the second through hole and the support seat. The other end of the third connecting rod is hinged to the second through hole, and the other end of the fourth connecting rod is hinged to the first through hole.

[0012] According to one embodiment of this application, the first connecting rod includes a first connecting arm connecting two first sidewalls. The first connecting arm has a relief groove. The third connecting rod has a protrusion corresponding to the relief groove. When the movable seat is fully opened relative to the support seat, the protrusion is located in the relief groove.

[0013] To solve the above-mentioned technical problems, another technical solution adopted in this application is: a box assembly, such as the hinge mechanism described in any of the above claims; a box, wherein the support base is disposed in the box; and a door, wherein the movable seat is disposed in the door.

[0014] The beneficial effects of this application are as follows: The hinge mechanism in this application includes a support base, a movable base, and a linkage component. The linkage component pivotally connects the support base and the movable base. The linkage component includes a first link, a second link, a third link, and a fourth link. One end of the first link and one end of the second link are rotatably connected to the support base, one end of the third link and one end of the fourth link are rotatably connected to the movable base, the other end of the first link is rotatably connected to the other end of the third link, the other end of the fourth link is rotatably connected to the first link, and the other end of the second link is rotatably connected to the fourth link. A limiting protrusion is provided at the hinge joint of the first and third links, and the fourth link has a limiting groove that matches the limiting protrusion. When the movable base is opened to a predetermined angle relative to the support base, the limiting protrusion is engaged in the limiting groove. This hinge mechanism not only achieves an ultra-large stroke, enabling the box assembly to open and close the door even in a zero-embedded state, but also allows for adjustment of the hinge mechanism's stroke without adding parts, using its own components, thus effectively reducing the production cost of the hinge mechanism. Furthermore, since no additional parts are required, this hinge mechanism also has the advantages of higher integration and smaller size. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein: Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the hinge mechanism of this application in the closed state; Figure 2 This is a three-dimensional structural schematic diagram of an embodiment of the hinge mechanism of this application in the unfolded state; Figure 3 This is a three-dimensional structural diagram of an embodiment of the hinge mechanism of this application in a partially unfolded state. Figure 4 This is another three-dimensional structural schematic diagram of an embodiment of the hinge mechanism of this application in a partially unfolded state; Figure 5 yes Figure 4 A partial enlarged cross-sectional schematic diagram of section A; Figure 6 This is another three-dimensional structural schematic diagram of an embodiment of the hinge mechanism of this application in a partially unfolded state; Figure 7 yes Figure 6 A schematic diagram of a partial cross-sectional structure of section B; Figure 8 This is another three-dimensional structural schematic diagram of an embodiment of the hinge mechanism of this application in the fully extended state; Figure 9 yes Figure 8 A schematic diagram of a partial cross-sectional structure of section C; Figure 10 This is a structural schematic diagram of the first fixing pin of the hinge mechanism of this application; Figure 11 This is a schematic diagram of the third link of the hinge mechanism of this application; Figure 12 This is a three-dimensional structural diagram of an embodiment of the hinge mechanism of this application in a partially closed state; Figure 13 yes Figure 12 A schematic diagram of a partial cross-sectional structure of section D; Figure 14 This is another three-dimensional structural schematic diagram of an embodiment of the hinge mechanism of this application in a partially closed state; Figure 15 yes Figure 14 A schematic diagram of a partial cross-sectional structure of section E in the middle; Figure 16 This is a three-dimensional structural diagram of an embodiment of the hinge mechanism of this application in a fully closed state; Figure 17 yes Figure 15 A schematic diagram of a partial cross-sectional structure of section F in the middle. Detailed Implementation

[0016] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not the entire structure. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0017] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0018] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0019] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0020] Currently, home appliances are mostly presented as standalone products. However, as people's demands for their home environment continue to increase, more and more appliances are required to be integrated into home furnishings and decorations, leading to the emergence of more and more built-in appliances. The key technology of built-in appliances often lies in hinges. However, current hinge technology often lacks a large stroke and cannot achieve over-the-top door opening and closing. Furthermore, current hinges often require additional components to achieve self-locking characteristics, which increases the number of structural parts, resulting in a higher overall price for the appliance, while also reducing its integration level.

[0021] Please see Figures 1 to 9 , Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the hinge mechanism of this application in the closed state; Figure 2 This is a three-dimensional structural schematic diagram of an embodiment of the hinge mechanism of this application in the unfolded state; Figure 3 This is a three-dimensional structural diagram of an embodiment of the hinge mechanism of this application in a partially unfolded state. Figure 4 This is another three-dimensional structural schematic diagram of an embodiment of the hinge mechanism of this application in a partially unfolded state; Figure 5 yes Figure 4 A partial enlarged cross-sectional schematic diagram of section A; Figure 6 This is another three-dimensional structural schematic diagram of an embodiment of the hinge mechanism of this application in a partially unfolded state; Figure 7 yes Figure 6 A schematic diagram of a partial cross-sectional structure of section B; Figure 8 This is another three-dimensional structural schematic diagram of an embodiment of the hinge mechanism of this application in the fully extended state; Figure 9 yes Figure 8 A schematic diagram of a partial cross-sectional structure of C; Figure 10 This is a structural schematic diagram of the first fixing pin of the hinge mechanism of this application; Figure 11 This is a schematic diagram of the third link of the hinge mechanism of this application.

[0022] In view of the above, one embodiment of this application provides a housing assembly (not shown in the figure). The housing assembly includes a door (not shown in the figure), a housing (not shown in the figure), and a hinge mechanism 10. The hinge mechanism 10 in this application not only has a large stroke, enabling the housing assembly to open in the opposite direction, but also allows for adjustment of the stroke without adding any parts.

[0023] It should be noted that the cabinet component can be a refrigeration device, such as a refrigerator or freezer, or it can be a regular cabinet; there are no restrictions here.

[0024] Zero-embedding cabinet components refer to a design where cabinet components are completely integrated into the home environment to reduce space occupation. When cabinet components are zero-embedded, they often have advantages such as high aesthetics, high space utilization, strong adaptability, and ease of operation.

[0025] "Over-cabinet" means that when the door is open relative to the cabinet and the angle between the door and the cabinet is 90°, the distance between the inner edge of the door and the inner side wall of the cabinet is greater than or equal to 0. In this case, the door can not interfere with the internal space of the refrigerator.

[0026] Another embodiment of this application provides a hinge mechanism 10. The hinge mechanism 10 includes a support base 11, a movable base 12, and a linkage assembly 13. The support base 11 is disposed on a housing, and the movable base 12 is disposed on a door. The linkage assembly 13 pivotally connects the support base 11 and the movable base 12. The linkage assembly 13 includes a first link 131, a second link 132, a third link 133, and a fourth link 134. One end of the first link 131 and one end of the second link 132 are rotatably connected to the support base 11, respectively. One end of the third link 133 and one end of the fourth link 134 are rotatably connected to the movable base 12, respectively. The other end of the first link 131 is rotatably connected to the other end of the fourth link 134. The other end of the third link 133 is rotatably connected to the first link 131. The other end of the second link 132 is rotatably connected to the third link 133.

[0027] Specifically, the linkage component 13 is connected in series with the support base 11 and the movable base 12 via fixed pins to form a six-bar linkage. During the opening of the movable base 12 relative to the support base 11, the movable base 12, as the motion output end of the six-bar linkage, moves away from the door. This movement of the movable base 12 drives the third link 133, which in turn drives the first link 131. At this time, the first and third links 131, as the driving structures in the six-bar linkage, drive the second and fourth links 134. During the closing of the movable base 12 relative to the support base 11, the rotation of the movable base 12 drives the first and third links 131 to rotate. The rotation of the third and first links 133 then drives the second and fourth links 132 to move, thus causing the first, second, third, and fourth links 131 to move and compress between the support base 11 and the movable base 12.

[0028] The first link 131 includes a first end G and a second end H arranged opposite to each other; the second link 132 includes a third end I and a fourth end J arranged opposite to each other; the third link 133 includes a fifth end K and a sixth end L arranged opposite to each other; and the fourth link 134 includes a seventh end M and an eighth end N arranged opposite to each other. The first end G is hinged to the support base 11, the second end H is hinged to the fifth end K, the sixth end L is hinged to the movable base 12, the third end I is hinged to the support base 11, the fourth end J is hinged to the fourth link 134, the seventh end M is hinged to the first link 131, and the eighth end N is hinged to the movable base 12.

[0029] Specifically, the first link 131, the second link 132, the support seat 11, and the fourth link 134 are connected in series to form a four-bar linkage. The first link 131, the third link 133, the fourth link 134, and the movable seat 12 are connected in series to form another four-bar linkage. That is, the six-bar linkage is composed of two double crank screw mechanisms, which enables the hinge mechanism 10 to achieve a large stroke during the opening of the door relative to the cabinet, thereby enabling the cabinet door to be opened and closed in a zero-embedded state of the refrigeration equipment.

[0030] Furthermore, a limiting protrusion 1311 is provided at the hinge joint of the first link 131 and the third link 133. The fourth link 134 has a limiting groove 1341 that matches the limiting protrusion 1311. When the movable seat 12 opens to a predetermined angle relative to the support seat 11, the limiting protrusion 1311 is engaged in the limiting groove 1341. Specifically, during the opening process of the movable seat 12 relative to the support seat 11, the limiting protrusion 1311 rotates with the rotation of the movable seat 12. When the movable seat 12 opens to a predetermined angle relative to the support seat 11, the limiting protrusion 1311 is engaged in the limiting groove 1341 to adjust the stroke of the hinge mechanism 10. Moreover, since the limiting protrusion 1311 and the limiting groove 1341 are structural components of the linkage assembly 13 itself, this structure can achieve stroke adjustment of the hinge mechanism 10 without adding parts, thereby effectively reducing the production cost of the hinge structure. Therefore, the hinge mechanism 10 not only achieves an ultra-long stroke, enabling the cabinet assembly to open and close the door even in a zero-embedded state, but also allows for adjustment of the hinge mechanism 10's stroke without adding any parts, effectively reducing the production cost of the hinge mechanism 10. Furthermore, since no additional parts are required, the hinge mechanism 10 also has the advantages of higher integration and smaller size.

[0031] In one embodiment of this application, a first fixing pin 1331 is provided at the hinge joint of the first link 131 and the third link 133. The first fixing pin 1331 is fixed relative to the first link 131. The third link 133 is rotatably connected to the first fixing pin 1331. A limiting protrusion 1311 is fixedly provided on the outer sleeve of the first fixing pin 1331. Specifically, the hinge joint of the first link 131 and the third link 133 is hinged by the first fixing pin 1331. At this time, during the movement of the movable seat 12 relative to the support seat 11, the first link 131 and the third link 133 can rotate relative to each other. On the one hand, this can effectively increase the maximum stroke of the hinge mechanism 10. On the other hand, it can also reduce the volume of the hinge mechanism 10 when the movable seat 12 is retracted relative to the support seat 11, so that the hinge mechanism 10 can be miniaturized in the closed state. A limiting protrusion 1311 is provided on the outer sleeve of the first fixing pin 1331. On the one hand, the limiting protrusion 1311 can cooperate with the limiting groove 1341 to adjust the stroke of the hinge mechanism 10. On the other hand, the limiting protrusion 1311 can also adjust the stroke by utilizing the structure of the hinge mechanism 10 itself, without the need for additional structural components to adjust the stroke of the hinge mechanism 10, thereby significantly improving the production cost of the hinge mechanism 10 itself.

[0032] Specifically, the limiting protrusion 1311 is a cam structure. Therefore, different positions of the limiting protrusion 1311 and its engagement with the limiting groove 1341 can change the depth to which the limiting protrusion 1311 engages within the limiting groove 1341. The deeper the limiting protrusion 1311 engages within the limiting groove 1341, the greater the angle of contact between the first connecting rod 131 and the third connecting rod 133, and consequently, the greater the stroke of the hinge mechanism 10. Therefore, by configuring the limiting protrusion 1311 as a cam structure, the maximum stroke of the hinge mechanism 10 can be effectively adjusted according to the depth of engagement of the limiting protrusion 1311 within the limiting groove 1341. Furthermore, due to the simplicity and ease of production of the cam structure, the labor costs of the hinge mechanism 10 can be significantly reduced.

[0033] Furthermore, the end of the first fixing pin 1331 is provided with a serrated portion 1332, and the first connecting rod 131 has a serrated groove 1334 corresponding to the serrated portion 1332. The first fixing pin 1331 is adjustablely fixed to the first connecting rod 131 by the engagement of the serrated portion 1332 and the serrated groove 1334. By providing the engagement of the serrated portion 1332 and the serrated groove 1334, when the movable seat 12 moves relative to the support seat 11, the first fixing pin 1331 can remain relatively stationary with the first connecting rod 131, while the limiting protrusion 1311 can move relative to the first fixing pin 1331. Therefore, the engagement of the serrated portion 1332 and the serrated groove 1334 allows the relative angle between the limiting protrusion 1311 and the first connecting rod 131 to be changed by the relative fixation of the first fixing pin 1331 and the first connecting rod 131, thereby adjusting the maximum stroke of the hinge mechanism 10. The structure of the serrated part 1332 and the serrated groove 1334 is simple in one aspect, and therefore the manufacturing process is also relatively simple. On the other hand, the meshing structure of the two can make the relative fixation between the first fixing pin 1331 and the first connecting rod 131 more stable, thus ensuring their relative stability.

[0034] Please continue reading. Figures 1 to 17 , Figure 12 This is a three-dimensional structural diagram of an embodiment of the hinge mechanism of this application in a partially closed state; Figure 13 yes Figure 12 A schematic diagram of a partial cross-sectional structure of section D; Figure 14 This is another three-dimensional structural schematic diagram of an embodiment of the hinge mechanism of this application in a partially closed state; Figure 15 yes Figure 14 A schematic diagram of a partial cross-sectional structure of section E in the middle; Figure 16 This is a three-dimensional structural diagram of an embodiment of the hinge mechanism of this application in a fully closed state; Figure 17 yes Figure 15 A schematic diagram of a partial cross-sectional structure of section F in the middle.

[0035] In one embodiment of this application, the linkage component 13 further includes a self-locking part 14. The self-locking part 14 is located at the end where the second link 132 and the support base 11 are hinged. A locking block 121 is formed on the side of the movable base 12 near the self-locking part 14. When the movable base 12 is closed relative to the support base 11, the locking block 121 and the self-locking part 14 engage to lock the movable base 12. Specifically, the engagement of the movable base 12 with the self-locking part 14 via the locking block 121 enables the hinge mechanism 10 to achieve self-locking in the closed state when the movable base 12 is closed relative to the support base 11. This structure allows for self-locking through the hinge mechanism 10 itself, eliminating the need for additional external structures to achieve the self-locking function, thus significantly reducing the production cost of the housing component. Simultaneously, it also makes closing the housing component easier for the user, improving the user's operational experience.

[0036] In one embodiment of this application, the self-locking part 14 includes a main body 141, a latch 142, an elastic member 143, and an abutment block 144. The main body 141 is rotatably disposed at the end of the second connecting rod 132 that is hinged to the support base 11. The latch 142 is disposed on the main body 141 and located on the side of the main body 141 near the movable seat 12. When the movable seat 12 is closed relative to the support base 11, the latch 142 and the latch block 121 engage. The elastic member 143 is disposed on the main body 141 to drive the latch 142 to rotate in a first direction X until it engages with the latch block 121. The abutment block 144 is disposed on the main body 141 and located on the side of the main body 141 near the support base 11. The elastic member 143 can drive the main body 141 to rotate until the abutment block 144 abuts against the second connecting rod 132.

[0037] Specifically, when the movable seat 12 is closed relative to the support seat 11, the latch 142 and the latch block 121 engage to lock the movable seat 12. The main body 141 is rotatably mounted at the end of the second connecting rod 132 that is hinged to the support seat 11. During the process of the movable seat 12 closing or opening relative to the support seat 11, the main body 141 can rotate as the linkage assembly 13 retracts or expands. When the door is closing relative to the box, the main body 141 rotates until the latch 142 engages with the latch block 121. When the latch block 121 and the latch 142 engage, the movable seat 12 is closed relative to the support seat 11, and the movable seat 12 and the support seat 11 are self-locked by the engagement of the latch 142 and the latch block 121. This structure utilizes the structure of the hinge mechanism 10 itself to achieve the self-locking function, thereby better saving the production cost of the hinge mechanism 10.

[0038] Preferably, the buckle 142 and the main body 141 can be integrally formed, which results in high connection strength and good structural stability. Of course, in some other embodiments, the buckle 142 and the main body 141 can be fixed by welding, gluing, fastener connection, etc., which is not limited here.

[0039] Furthermore, during the engagement of the latch 142 and the locking block 121, the movable seat 12 moves, thereby pushing the main body 141 to rotate in the opposite direction to the first direction X. At this time, the latch 142 moves with the movement of the main body 141 to make way for the locking block 121. Meanwhile, the elastic element 143 undergoes elastic deformation under the movement of the main body 141. When the movable seat 12 moves to the point where it is completely closed relative to the support seat 11, the main body 141 is no longer subjected to the thrust of the movable seat 12, and the elastic element 143 also recovers its elastic deformation. During the recovery of its elastic deformation, the elastic element 143 rotates in the first direction X to drive the latch 142 to rotate in the first direction X until it engages with the locking block 121. At this time, the abutment block 144 abuts against the second connecting rod 132, thus effectively limiting the movement of the main body 141. By incorporating an elastic element 143, the elastic potential energy of the element 143 drives the latch 142 and the locking block 121 to engage. This eliminates the need for an additional driving component, making the elastic element 143 less expensive and simpler in structure compared to a driving component. Furthermore, the elasticity of the element 143 facilitates door closure; that is, when the door's opening angle relative to the cabinet is close to 0 degrees, the door can automatically close, requiring less effort from the user and improving the user experience. The abutment block 144 effectively limits the movement of the main body 141, preventing excessive rotation of the main body 141 during the closing process of the movable seat 12 relative to the support seat 11. Therefore, the abutment block 144 effectively limits the movement of the movable seat 12, preventing excessive contact between the movable seat 12 and the support seat 11, which could damage both and affect their service life. Therefore, the abutment block 144 can indirectly limit the movable position of the movable seat 12 by limiting the main body 141, thereby improving the service life of the hinge mechanism 10.

[0040] Preferably, the elastic element 143 is a torsion spring. In this case, the main body end of the torsion spring is disposed within the main body portion 141, and the extension end of the torsion spring abuts against the connection between the buckle 142 and the main body portion 141. When the elastic element 143 is a torsion spring, the load-bearing capacity of the self-locking portion 14 can be increased, and the structural strength of the self-locking portion 14 is also improved accordingly. Of course, in some other embodiments, ordinary springs or other structures with elastic potential energy can also be used, which are not limited here.

[0041] In one embodiment of this application, the latch 142 has an arcuate surface 1421 on the side facing the latch block 121, and the latch block 121 has a repulsion surface 1211 on the side facing the latch 142. During the process of the movable seat 12 rotating relative to the support seat 11 to close, the repulsion surface 1211 contacts the arcuate surface 1421 and drives the latch 142 to rotate in the second direction Y, which is opposite to the first direction X. Specifically, during the process of the movable seat 12 rotating relative to the support seat 11 to close, the repulsion surface 1211 of the locking block 121 contacts the arc-shaped surface 1421 of the buckle 142, and the repulsion surface 1211 drives the main body 141 and the buckle 142 to rotate in the first direction X to make way for the locking block 121. At this time, the elastic element 143 also undergoes elastic deformation under the drive of the repulsion surface 1211. When the movable seat 12 is completely closed relative to the support seat 11, the driving force of the repulsion surface 1211 disappears, and the elastic element 143 recovers its elastic deformation under its own elastic force. The elastic element 143 drives the main body 141 to rotate in the second direction Y. At this time, the buckle 142 also rotates in the second direction Y until the buckle 142 engages with the locking block 121. By setting the repulsion surface 1211 and the arc-shaped surface 1421, on the one hand, the movable seat 12 can make way for the locking block 121 during the process of retracting relative to the support seat 11, so that the locking block 121 and the buckle 142 can be smoothly engaged. On the other hand, it can also increase the contact area between the locking block 121 and the buckle 142, so that it is easier to make the buckle 142 make way for the locking block 121.

[0042] In one embodiment of this application, the support base 11 includes two opposing support walls 111, the first connecting rod 131 includes two opposing first side walls 1313, and the second connecting rod 132 includes two opposing second side walls 1321. The first side walls 1313 and the second side walls 1321 are respectively hinged to the support walls 111. One end of the fourth connecting rod 134 is rotatably disposed between the two first side walls 1313, and the other end is hinged to the movable base 12. One end of the third connecting rod 133 is rotatably disposed between the two second side walls 1321, and the other end is hinged to the movable base 12. With one end of the third link 133 rotatably disposed between the two second side walls 1321 and the fourth link 134 rotatably disposed between the two first side walls 1313, this spatial arrangement not only allows the hinge mechanism 10 to have a larger stroke, enabling the box assembly to open beyond the box; it also allows the movable seat 12 to fold and retract when closed relative to the support seat 11, so that the hinge mechanism 10 has a smaller volume while maintaining high structural strength in the closed state.

[0043] Furthermore, the movable seat 12 includes two opposing third sidewalls 122, each with a first through hole 1221 and a second through hole 1222. The distance from the first through hole 1221 to the support seat 11 is less than the distance from the second through hole 1222 to the support seat 11. The other end of the third connecting rod 133 is hinged to the first through hole 1221, and the other end of the fourth connecting rod 134 is hinged to the second through hole 1222. With the first through hole 1221 and the second through hole 1222 set at different heights, the angle between the third link 133 and the first link 131 is smaller than the angle between the fourth link 134 and the second link 132. Therefore, during the closing process of the movable seat 12 relative to the support seat 11, since the angle between the third link 133 and the first link 131 is smaller than the angle between the fourth link 134 and the second link 132, the hinge mechanism 10 can be folded and retracted during the closing process of the movable seat 12 relative to the support seat 11, thereby effectively reducing the overall volume of the hinge mechanism 10.

[0044] In one embodiment of this application, the first connecting rod 131 includes a first connecting arm 1314 connecting two first sidewalls 1313, and the first connecting arm 1314 has a clearance groove 1315. A protrusion 1333 is formed on the second connecting rod 132 corresponding to the clearance groove 1315. When the movable seat 12 is fully opened relative to the support seat 11, the protrusion 1333 is located within the clearance groove 1315. The structure of the clearance groove 1315 can provide some clearance for the protrusion 1333, preventing the second connecting rod 132 from abutting against the first connecting rod 131 during movement, thus preventing the hinge mechanism 10 from continuing to move and affecting its travel. Therefore, the arrangement of the clearance groove 1315 and the protrusion 1333 allows the protrusion 1333 to move into the clearance groove 1315 when the movable seat 12 is opened relative to the support seat 11, thereby enabling the hinge mechanism 10 to move to a greater range of motion.

[0045] It should be noted that the terms "horizontal" and "vertical" do not imply that the components must be absolutely horizontal or vertical, but rather that they can be slightly tilted. Similarly, the terms "parallel" and "perpendicular" do not imply that the components are absolutely parallel or perpendicular, but rather that they can have a certain angular deviation. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but rather that it can be slightly tilted. Furthermore, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0046] It is understood that the term "multiple" in this document means at least two, such as two, three, etc., unless otherwise specified. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices. The term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0047] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A hinge mechanism, characterized in that, include: Support base; Activity seats; A linkage assembly is pivotally connected to the support base and the movable base. The linkage assembly includes a first link, a second link, a third link, and a fourth link. One end of the first link and one end of the second link are rotatably connected to the support base, one end of the third link and one end of the fourth link are rotatably connected to the movable base, the other end of the first link is rotatably connected to the other end of the third link, the other end of the fourth link is rotatably connected to the first link, and the other end of the second link is rotatably connected to the fourth link. Wherein, a limiting protrusion is provided at the hinge of the first link and the third link, and a limiting groove matching the limiting protrusion is provided on the fourth link. When the movable seat is opened to a predetermined angle relative to the support seat, the limiting protrusion is engaged in the limiting groove. Wherein, a first fixing pin is provided at the hinge joint of the first connecting rod and the third connecting rod, the first fixing pin is fixed relative to the first connecting rod, the third connecting rod is rotatably connected to the first fixing pin, and the limiting protrusion is fixedly provided on the outer sleeve of the first fixing pin; The limiting protrusion has a cam structure; the end of the first fixing pin is provided with a serrated part, and the first connecting rod has a serrated groove corresponding to the serrated part. The first fixing pin is adjustablely fixed to the first connecting rod by cooperating with the serrated part and the serrated groove.

2. The hinge mechanism according to claim 1, characterized in that, The linkage component also includes a self-locking part, which is disposed at the end of the second connecting rod that is hinged to the support seat. A locking block is formed on the side of the movable seat near the self-locking part. When the movable seat is closed relative to the support seat, the locking block and the self-locking part engage to lock the movable seat.

3. The hinge mechanism according to claim 2, characterized in that, The self-locking part includes: The main body is rotatably mounted at the end of the second connecting rod that is hinged to the support base; A latch is provided on the main body and located on the side of the main body near the movable seat. When the movable seat is closed relative to the support seat, the latch and the latch block engage. An elastic element is provided on the main body to drive the buckle to rotate in the first direction until it engages with the buckle block; An abutment block is disposed on the main body and located on the side of the main body near the support seat. The elastic element can drive the main body to rotate until the abutment block abuts against the second connecting rod.

4. The hinge mechanism according to claim 3, characterized in that, The buckle has an arc-shaped surface on the side facing the buckle block, and the buckle block has a repulsion surface on the side facing the buckle. During the process of the movable seat rotating relative to the support seat to close, the repulsion surface contacts the arc-shaped surface and drives the buckle to rotate in a second direction opposite to the first direction.

5. The hinge mechanism according to claim 1, characterized in that, The support base includes two opposing support walls, the first connecting rod includes two opposing first side walls, the second connecting rod includes two opposing second side walls, the first side walls and the second side walls are respectively hinged to the support walls, one end of the fourth connecting rod is rotatably disposed between the two first side walls, and the other end is hinged to the movable seat, and one end of the third connecting rod is rotatably disposed between the two second side walls, and the other end is hinged to the movable seat.

6. The hinge mechanism according to claim 1, characterized in that, The movable seat includes two opposing third sidewalls, on which a first through hole and a second through hole are provided. The distance between the first through hole and the support seat is less than the distance between the second through hole and the support seat. The other end of the third connecting rod is hinged to the second through hole, and the other end of the fourth connecting rod is hinged to the first through hole.

7. The hinge mechanism according to claim 5, characterized in that, The first connecting rod includes a first connecting arm that connects two first sidewalls. The first connecting arm has a relief groove. The third connecting rod has a protrusion corresponding to the relief groove. When the movable seat is fully opened relative to the support seat, the protrusion is located in the relief groove.

8. A housing assembly, characterized in that, include: The hinge mechanism as described in any one of claims 1-7; The housing, wherein the support base is disposed on the housing; The door body, and the movable seat is disposed on the door body.

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