Hinge mechanism for automatically and synchronously opening and closing door and cabinet box
By designing a hinge mechanism for automatically synchronous door opening and closing, combined with a beveled boss and linear damper, the problem of lack of buffering mechanism during the opening and closing of existing cabinet doors is solved, and the automatic synchronous opening and closing and buffering functions are realized, improving user experience and service life.
Patent Information
- Application Number
- CN202421379108.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-17
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-06-17
AI Technical Summary
The lack of buffering mechanism during the opening and closing of existing cabinet doors leads to high impact noise when closing, affecting service life and user experience.
A hinge mechanism for automatically synchronizing door opening and closing is designed, including a drive assembly, a sliding lever and an elastic assembly, enabling automatic door opening and closing and buffering functions through bevel bosses and linear dampers.
It realizes automatic synchronous opening and closing of cabinet doors, reduces noise when opening and closing doors, extends the service life of cabinet doors, and improves user experience.
Smart Images
Figure CN222667988U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of hinges, in particular to a hinge mechanism for automatically and synchronously opening and closing a door and a cabinet box using the hinge mechanism. Background Art
[0002] The existing cabinet body and cabinet door are installed by pivoting, and the cabinet door can be opened at any time as needed. However, when the cabinet door becomes heavy and needs to be opened and closed at the same time, it takes a lot of effort and time. When closing, magnets are usually required to ensure that the cabinet door is completely closed. In the process of opening and closing the existing cabinet door, there is no buffer mechanism, which causes a lot of impact noise when closing the door, which affects the service life of the cabinet door and also causes a poor user experience. Utility Model Content
[0003] In view of the above problems, the utility model provides a hinge mechanism for automatically and synchronously opening and closing doors, which is applied to cabinet doors and cabinet bodies. When the cabinet doors are opened or closed to a certain angle, the cabinet doors can be automatically opened or closed, thereby saving effort, being simple and convenient to open and close the doors.
[0004] The technical solution adopted by the utility model is:
[0005] A hinge mechanism for automatically and synchronously opening and closing a door comprises a driving component that rotates synchronously with a cabinet door, a sliding rod connected to the driving component, and an elastic component. The sliding rod and the driving component drive each other. The sliding rod is connected to an inclined boss that cooperates with the elastic component to squeeze the elastic component to deform so as to drive the cabinet door to open and close automatically. A force dividing point is formed on the inclined boss. The driving component drives the sliding rod to move until the elastic component is at the force dividing point. When the elastic component passes the force dividing point, the elastic component cooperates with the inclined boss to drive the sliding rod to move, and the sliding rod drives the driving component to rotate.
[0006] Preferably, the elastic component comprises an elastic reset member, one end of which is provided with a movable seat for squeezing the elastic reset member, and a roller rolling along the inclined boss is mounted on the movable seat via a pin.
[0007] More preferably, one side of the force dividing point on the inclined boss forms a first inclined side surface, the other side of the force dividing point on the inclined boss forms a second inclined side surface, the top of the inclined boss forms a boss arc surface connecting the first inclined side surface and the second inclined side surface, and the force dividing point is at the top of the boss arc surface.
[0008] More preferably, the second oblique side surface is connected to a connecting surface.
[0009] More preferably, the driving assembly includes a driving gear that rotates synchronously with the cabinet door, the driving gear is meshed with a gear transmission group, the sliding rod is connected to a rack, and the gear transmission group is meshed with a rack on the sliding rod.
[0010] More preferably, the rack and the inclined boss are respectively arranged on both sides of the sliding rod.
[0011] Preferably, the end of the sliding rod is also equipped with a linear damper, the cylinder of the linear damper is equipped with a piston rod, the end of the piston rod is provided with a first wedge surface, and the end of the sliding rod is provided with a second wedge surface matching the first wedge surface.
[0012] More preferably, a movable head is installed at the end of the piston rod, a first wedge surface is provided on one side of the movable head, and the top of the movable head forms a pressing plane pressed on the sliding rod.
[0013] More preferably, the driving assembly, the elastic assembly and the linear damper are all installed in a mounting box, and a slideway for the sliding seat to slide is provided in the mounting box.
[0014] The utility model also provides a cabinet box using a hinge mechanism, including a cabinet body, two cabinet doors are installed on the cabinet body through a pivot, two hinge mechanisms are installed on the top of the cabinet body, driving components in the two hinge mechanisms rotate synchronously with the corresponding cabinet doors, a connector is provided between the two hinge mechanisms, a connecting gear set is provided in the connector, the connecting gear set is meshed with two connecting racks at the same time, and the two connecting racks are connected to sliding rods in the two hinge mechanisms through connecting rods respectively.
[0015] Compared with the prior art, the beneficial effects of the utility model are: the utility model provides a hinge mechanism for automatic synchronous opening and closing of doors, which can be applied to cabinet doors and cabinet bodies. The rotation of the cabinet door drives the sliding rod to move linearly, and the inclined boss on the sliding rod squeezes the elastic component. When the cabinet door is opened or closed to a certain angle, the elastic component cooperates with the inclined boss to drive the sliding rod to move, and the sliding rod drives the cabinet door to rotate through the driving component to realize automatic synchronous opening and closing of the cabinet door; and in the process of closing the door, a linear damper is used in conjunction with the end of the sliding rod, and the cabinet door has a built-in slow closing function to reduce noise. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 , is a schematic diagram of a hinge mechanism for automatically and synchronously opening and closing a door provided by the utility model;
[0017] Figure 2 , which is an exploded view of a hinge mechanism for automatically and synchronously opening and closing a door provided by the utility model;
[0018] Figure 3 , which is a schematic diagram of a sliding rod in a hinge mechanism for automatically and synchronously opening and closing a door provided by the utility model;
[0019] Figure 4 , which is a schematic diagram of the movement of a sliding rod in a hinge mechanism for automatically and synchronously opening and closing a door provided by the utility model Figure 1 ;
[0020] Figure 5 , which is a schematic diagram of the movement of a sliding rod in a hinge mechanism for automatically and synchronously opening and closing a door provided by the utility model Figure 2 ;
[0021] Figure 6 , which is a schematic diagram of the movement of a sliding rod in a hinge mechanism for automatically and synchronously opening and closing a door provided by the utility model Figure 3 ;
[0022] Figure 7 , which is a schematic diagram of the movement of a sliding rod in a hinge mechanism for automatically and synchronously opening and closing a door provided by the utility model Figure 4 ;
[0023] Figure 8 , which is a schematic diagram of the movement of a sliding rod in a hinge mechanism for automatically and synchronously opening and closing a door provided by the utility model Figure 5 ;
[0024] Fig. 9 , is a schematic diagram of a cabinet box using a hinge mechanism provided by the utility model;
[0025] Fig.10 , which is an exploded diagram of a connector in a cabinet box using a hinge mechanism provided by the utility model. DETAILED DESCRIPTION
[0026] The preferred implementation modes provided by the utility model are described in detail according to the accompanying drawings.
[0027] Figures 1 to 8 , which is a preferred embodiment of a hinge mechanism for automatically and synchronously opening and closing a door provided by the utility model. Figures 1 to 8As shown, the hinge mechanism for automatically opening and closing the door synchronously includes a driving component 10 that rotates synchronously with the cabinet door 100, a sliding rod 20 connected to the driving component, and an elastic component 30. The sliding rod 20 and the driving component 10 drive each other. The sliding rod 20 is connected to an inclined boss 40 that cooperates with the elastic component 30 to squeeze the elastic component to deform so as to drive the cabinet door to open and close automatically. A strong dividing point is formed on the inclined boss 40. When the driving component 10 drives the sliding rod 20 to move until the elastic component 30 is at the force dividing point, when the elastic component 30 passes the force dividing point, the elastic component 30 cooperates with the inclined boss 40 to drive The sliding rod 20 moves, and the sliding rod 20 drives the driving component 10 to rotate; the hinge mechanism is applied to the cabinet door 100 and the cabinet body 200, and can be suitable for cabinet doors weighing 15~30Kg. The rotation of the cabinet door 100 drives the sliding rod 20 to move linearly, and the inclined boss 40 on the sliding rod 20 squeezes the elastic component 30 until the elastic component is at the force dividing point. When the cabinet door is opened to a certain angle, the elastic component passes the force dividing point, and the elastic component 30 cooperates with the inclined boss 40 to drive the sliding rod 20 to move. The sliding rod 20 drives the cabinet door 100 to rotate through the driving component 10, thereby realizing automatic opening and closing of the cabinet door, and saving effort in opening and closing the door.
[0028] like Figure 2 As shown, the elastic assembly 30 includes an elastic reset member 31, one end of which is provided with a movable seat 32 for squeezing the elastic reset member 31, the movable seat 32 is pressed on the inclined boss 40, the sliding rod 20 drives the inclined boss 40 to move, and the movable seat 32 moves along the inclined boss 40 to squeeze the elastic reset member 31. In order to reduce wear and friction, a roller 33 rolling along the inclined boss is installed on the movable seat 32 through a pin shaft, and the roller 33 moves along the inclined boss 40, so that the movable seat 32 squeezes the elastic reset member 31. The elastic reset member 31 is a spring.
[0029] like Figure 3As shown, the inclined boss 40 is similar to a triangular body, one side of the force dividing point on the inclined boss forms a first inclined side surface 41, the other side of the force dividing point on the inclined boss forms a second inclined side surface 42, the top of the inclined boss forms a boss arc surface 43 connecting the first inclined side surface and the second inclined side surface, and the force dividing point is at the top of the boss arc surface 43; when the cabinet door is closed, the movable seat 32 is at the other side of the inclined boss 40, and when the door is opened, the driving assembly 10 that rotates synchronously with the cabinet door 100 drives the sliding rod 20 to move outward, and the inclined boss 40 moves synchronously, and the movable seat 32 is at the other side of the inclined boss 40. The roller 33 on the movable seat 32 rolls upward along the second inclined side surface 42, and the movable seat 32 squeezes the elastic reset member 31. When the cabinet door 100 rotates to a preset angle, the roller 33 on the movable seat 32 rolls to the highest vertex of the boss arc surface 43, that is, the roller 33 on the movable seat 32 rolls to the force dividing point, at which time the squeezing of the elastic reset member 31 reaches the maximum; when the roller 33 passes the highest vertex (the force dividing point) of the boss arc surface 43, the roller 33 rolls downward along the first inclined side surface 41, and the elastic reset member 31 gradually resets, squeezing the inclined boss 40 and the sliding The movable rod 20 applies a thrust to move outward, and the sliding rod 20 drives the cabinet door 100 to rotate outward through the driving assembly 10 until the roller 33 rolls to the bottom of the first inclined side surface 41 and presses on the sliding rod 20. At this time, the door opening angle of the cabinet door 100 reaches the maximum; when closing the door, the driving assembly 10 that rotates synchronously with the cabinet door 100 drives the sliding rod 20 to move inward, and the inclined boss 40 moves synchronously, and the roller 33 rolls upward along the first inclined side surface 41, and the movable seat 32 squeezes the elastic reset member 31. When the cabinet door 100 rotates to a preset angle, the movable seat 32 The roller 33 on the upper part rolls to the highest vertex of the boss arc surface 43, at which time the elastic reset member 31 is squeezed to the maximum; after the roller 33 passes the highest vertex of the boss arc surface 43, the roller 33 slides downward along the second inclined side surface 42, and the elastic reset member 32 gradually resets, exerting an inward thrust on the inclined boss 40 and the sliding rod 20, and the sliding rod 20 drives the cabinet door 100 to rotate and close through the driving assembly 10, until the roller 33 rolls to the bottom of the inclined side surface 42 and presses on the sliding rod 20, at which time the cabinet door 100 and the cabinet body 200 are completely closed. It should be noted that the opening angle of the cabinet door and the opening angle of the cabinet door when the roller 33 rolls to the highest vertex of the boss arc surface 43 can be preset as needed.
[0030] The second inclined side surface 42 is connected to a connecting surface 44, that is, the inclined slope lengths on both sides of the inclined boss 40 are inconsistent. When closing the door, when the roller 33 rolls to the bottom of the second inclined side surface 42, the cabinet door 100 can be closed. Since a gap is left between the cabinet door 100 and the cabinet body 200 during installation, after the roller 33 rolls to the bottom of the second inclined side surface 42, it continues to roll downward to the connecting surface 44, and continues to drive the cabinet door 100 to close through the sliding rod 20 through the driving assembly 10, and presses the cabinet door 100 tightly against the cabinet body 200, that is, a negative angle is formed between the cabinet door 100 and the cabinet body 200, thereby avoiding a gap between the cabinet door 100 and the cabinet body 200.
[0031] like Figure 2 As shown, the driving assembly 10 includes a driving gear 11 that rotates synchronously with the cabinet door, the driving gear 11 is meshed with a gear transmission group 12, the sliding rod 20 is connected to a rack 21, the gear transmission group 12 is meshed with the rack 21 on the sliding rod 20, when the cabinet door rotates, the driving gear 11 rotates synchronously, the gear transmission group 12 is meshed with the rack 21 on the sliding rod 20, thereby driving the sliding rod 20 to move linearly; and when the sliding rod 20 is displaced by the inclined boss and the elastic assembly 30, the gear transmission group 12 is meshed with the rack 21 on the sliding rod 20, which can drive the driving gear 11 to rotate in the reverse direction, thereby driving the cabinet door 100 to rotate, providing assistance for the opening and closing of the cabinet door 100.
[0032] The rack 21 and the inclined boss 40 are respectively arranged on both sides of the sliding rod 20, so that the sliding rod 20 rotates synchronously with the rack 21 and the inclined boss 40. The inclined boss 40 is installed on the side of the sliding rod 20, and the bottom of the first inclined side surface 41 and the second side inclined surface 42 of the inclined boss 40 smoothly transitions with the side of the sliding rod 20. Figures 4 to 8 As shown, the rack 21 and the inclined boss 40 are respectively arranged on the lower side and the upper side of the sliding rod 20 , and correspondingly, the driving component 10 and the elastic component 30 are respectively located on the lower side and the upper side of the sliding rod 20 .
[0033] The end of the sliding rod 20 is also equipped with a linear damper 50, which is arranged in a plastic sleeve. The cylinder body 51 of the linear damper 50 is equipped with a piston rod 52. The cylinder body 51 contains a damping medium and a return spring. The end of the piston rod 52 is provided with a first wedge surface 531, and the end of the sliding rod 20 is provided with a second wedge surface 201 that cooperates with the first wedge surface 531. During the opening process of the cabinet door 100, the linear damper 50 provides a certain amount of assistance for the sliding rod 20 to move outward, saving effort in opening the door; and when the cabinet door 100 is closed, the sliding rod 20 moves inward to play a buffering role, so that the cabinet door has a slow closing function when closing, reducing noise.
[0034] The linear damper 50 is installed on one side of the elastic component 30, and a movable head 53 is installed on the end of the piston rod 52. A first wedge-shaped surface 531 is provided on one side of the movable head 53, and a pressing plane 532 is formed on the top of the movable head 53 to press on the sliding rod. Before opening the door, the pressing plane 532 of the movable head 53 on the piston rod 52 presses on the sliding rod 20, and the damping medium in the cylinder body 51 is squeezed by the piston rod 52 to the maximum extent; when opening the door, the sliding rod 20 moves outward in a straight line under the action of the driving component 10, and after the cabinet door rotates to a certain angle, the sliding rod 20 After moving a certain distance, the first wedge surface 531 on the movable head 53 cooperates with the second wedge surface 201 of the sliding rod 20, and the piston rod 52 extends outward under the action of the damping medium and the return spring in the cylinder body 51, providing a certain amount of assistance for the outward linear movement of the sliding rod 20; the sliding rod 20 continues to move outward linearly, and the roller 33 of the elastic component 30 rolls upward along the second inclined side surface 42 to the highest vertex of the boss arc surface 43. At this time, the first wedge surface 531 on the movable head 53 is about to separate from the second wedge surface 201 of the sliding rod 20, and the outward extension length of the piston rod 52 reaches the maximum. When the door 100 is closed, the sliding rod 20 is driven to move inwards, and the roller 33 of the elastic component 30 rolls upward along the first inclined side surface 41 to the highest vertex of the boss arc surface 43, and then rolls toward the second inclined side surface 42. The first wedge-shaped surface 531 on the movable head 53 and the sliding rod 20 are in contact with each other. The second wedge surface 201 of 20 begins to cooperate, and the end of the sliding rod 20 pushes the piston rod 52 connected to the movable head 53 to move into the cylinder body 51 to squeeze the damping medium in the cylinder body 51 until the first wedge surface 531 on the movable head 53 is separated from the second wedge surface 201, and the pressing plane 532 on the movable head 53 presses on the sliding rod 20, and the damping medium in the cylinder body 51 is squeezed by the piston rod 52 to the maximum extent, while the sliding rod 20 continues to move inward, the cabinet door 100 continues to close, and the pressing plane 532 on the movable head 53 keeps pressing on the side of the sliding rod 20.
[0035] like Figure 2As shown, the driving assembly 10 and the elastic assembly 30 are installed in the installation box 60, and the installation box 60 is provided with a slideway 61 for the sliding seat 20 to slide. The installation box 60 includes a box body 601 and a cover body 602. The slideway 61 divides the inner cavity of the box body 601 into an upper cavity and a lower cavity. The elastic assembly 30 and the linear damper 50 are arranged in the upper cavity, the linear damper 50 is on one side of the elastic assembly 30, and the driving assembly 10 is arranged in the lower cavity. The box body 601 is also provided with a limiting groove 63 for limiting the movement of the movable head 53 and the roller 33 on the movable seat 32. The box body 601 and the cover body 602 are installed by screws, and the box body 601 is installed on the top of the cabinet 200. The shaft of the driving gear 11 passes through the box body 601 and is connected to the cabinet door 100.
[0036] like Figures 4 to 8 As a preferred embodiment, the gear transmission group 12 includes two mutually meshing driven gears 121, one driven gear 121 is meshed with the driving gear 11, and the other driven gear 121 is meshed with the rack 21 on the sliding seat 20; the preset maximum opening angle of the cabinet door is 90 degrees, and when the linear damper 50 returns to the maximum position, the opening angle of the cabinet door 100 is 45 degrees; when the opening angle of the cabinet door is 45 degrees, the roller 33 of the elastic component 30 is at the highest vertex of the boss arc surface 43, so that when the opening angle range of the cabinet door 100 is 0-90°, when the closing angle of the cabinet door is less than 45°, the cabinet door 100 is automatically closed, and when the opening angle of the cabinet door 100 is greater than 45°, the cabinet door 100 is automatically opened, and has a slow closing function during the automatic closing process of the cabinet door 100.
[0037] In this embodiment, the door opening process is as follows: Figure 4 As shown, when the cabinet door is closed, the pressing plane 532 on the movable head 53 in the linear damper 50 presses on the sliding rod 20, and the roller 33 of the elastic component 30 is at the bottom of the connecting surface 44 connected to the second inclined side surface 42; during the door opening process, the cabinet door 100 rotates, driving the driving gear 11 to drive the sliding rod 20 with the rack 21 to move through two mutually meshing driven gears 121, and the roller 33 on the movable seat 32 rolls upward along the second inclined side surface 42, and the movable seat 32 squeezes the elastic reset member 31; Figure 5 As shown in FIG. 1 , when the cabinet door rotates to 30 degrees, the second wedge surface 201 at the end of the sliding rod 20 begins to cooperate with the first wedge surface 531 on the movable head 53, and the piston rod 52 extends outward under the action of the damping medium and the return spring in the cylinder body 51, providing a certain amount of assistance for the outward linear movement of the sliding rod 20; Figure 6As shown in FIG. 1 , when the cabinet door rotates to 45 degrees, the roller 33 on the movable seat 32 rolls along the second inclined side surface 42 to the highest vertex (force dividing point) of the boss arc surface 43. At this time, the elastic reset member 31 is squeezed to the maximum, the piston rod 52 extends outward to the maximum length, and the linear damper 50 returns to the maximum position; as shown in FIG. Figure 7 As shown, when the cabinet door continues to rotate, the roller 33 on the movable seat 32 passes the highest vertex (the dividing point of the force) of the boss arc surface 43 and rolls downward along the first inclined side surface 41, and the elastic reset member 31 gradually resets, exerting an outward thrust on the inclined boss 40 and the sliding rod 20, and the sliding rod 20 drives the cabinet door 100 to automatically rotate outward through the driving assembly 10 until the roller 33 rolls to the bottom of the first inclined side surface 41 and presses on the sliding rod 20. At this time, the door opening angle of the cabinet door 100 reaches the maximum, as shown in FIG. Figure 8 As shown; the opposite action steps are the door closing process. After the roller 33 rolls to the bottom of the second inclined side surface 42, it continues to roll downward to the connecting surface 44, and continues to drive the cabinet door 100 to close through the driving assembly 10 through the sliding rod 20, and presses the cabinet door 100 against the cabinet body 200, that is, a negative angle is formed between the cabinet door 100 and the cabinet body 200, and the second wedge surface 201 at the end of the sliding rod 20 cooperates with the first wedge surface 531 on the movable head 53, so that the cabinet door 100 closes slowly with less noise.
[0038] The hinge provided by the utility model has been tested for 100,000 times without damage or breakage, and its function has not been significantly reduced in 50,000 tests. It has strong practicality and can be applied to large refrigerators.
[0039] like Fig. 9 and Fig.10 As shown, the utility model also provides a cabinet box using a hinge mechanism, including a cabinet body 200, two cabinet doors 100 are installed on the cabinet body 200 through a pivot, two hinge mechanisms for automatically opening and closing the doors are installed on the top of the cabinet body, the driving components 10 in the two hinge mechanisms rotate synchronously with the corresponding cabinet doors 100, a connector 70 is provided between the two hinge mechanisms, a connecting gear set 71 is provided in the connector 70, the connecting gear set 71 is meshed with two connecting racks 72 at the same time, and the two connecting racks 72 are connected to the sliding rods 20 in the two hinge mechanisms through connecting rods 73 respectively; the two hinges are symmetrically arranged, the two cabinet doors 100 open and close synchronously, the movement directions of the sliding seats 20 in the two hinges are opposite, and they are connected together through the connector 70 to realize the synchronous movement of the sliding seats 20 in the two hinges. The hinge mechanism and the connector 70 are small in size, the size of the connecting rod 73 can be customized according to the size specifications of the cabinet, the connecting rod 73 is detachable, easy to install, and saves packaging costs.
[0040] It is worth noting that the hinge mechanism is installed on the top of the cabinet body 200 and cannot bear the weight of the cabinet door 100. The cabinet door 100 can be borne by a pivot seat installed at the bottom of the cabinet body 200 and the cabinet body 200.
[0041] In summary, the technical solution of the utility model can fully and effectively achieve the above-mentioned utility model purpose, and the structure and functional principle of the utility model have been fully verified in the embodiments, and can achieve the expected effect and purpose. Without departing from the principle and essence of the utility model, various changes or modifications can be made to the embodiments of the utility model. Therefore, the utility model includes all replacement contents within the scope mentioned in the scope of the patent application, and any equivalent changes made within the scope of the patent application of the utility model are within the scope of the patent application of this case.
Claims
1. A hinge mechanism for automatically and synchronously opening and closing a door, characterized in that: It includes a driving component that rotates synchronously with the cabinet door, a sliding rod connected to the driving component, and an elastic component. The sliding rod and the driving component drive each other. The sliding rod is connected to an inclined boss that cooperates with the elastic component to squeeze the elastic component to deform so as to drive the cabinet door to automatically open and close. A force dividing point is formed on the inclined boss. When the driving component drives the sliding rod to move until the elastic component is at the force dividing point, when the elastic component passes the force dividing point, the elastic component cooperates with the inclined boss to drive the sliding rod to move, and the sliding rod drives the driving component to rotate.
2. The hinge mechanism for automatic synchronous door opening and closing according to claim 1, characterized in that: The elastic component comprises an elastic reset member, one end of which is provided with a movable seat for pressing the elastic reset member, and a roller rolling along the inclined boss is mounted on the movable seat via a pin shaft.
3. The hinge mechanism for automatic synchronous door opening and closing according to claim 2, characterized in that: One side of the force dividing point on the inclined boss forms a first inclined side surface, and the other side of the force dividing point on the inclined boss forms a second inclined side surface. The top of the inclined boss forms a boss arc surface connecting the first inclined side surface and the second inclined side surface, and the force dividing point is at the top of the boss arc surface.
4. The hinge mechanism for automatic synchronous door opening and closing according to claim 3, characterized in that: The second oblique side surface is connected to a connecting surface.
5. The hinge mechanism for automatic synchronous door opening and closing according to claim 1, characterized in that: The driving assembly comprises a driving gear which rotates synchronously with the cabinet door, the driving gear is meshed with a gear transmission group, the sliding rod is connected with a rack, and the gear transmission group is meshed with a rack on the sliding rod.
6. The hinge mechanism for automatic synchronous door opening and closing according to claim 5, characterized in that: The rack and the inclined boss are respectively arranged on two sides of the sliding rod.
7. The hinge mechanism for automatic synchronous door opening and closing according to claim 1, characterized in that: The end of the sliding rod is also matched with a linear damper, the cylinder of the linear damper is matched with a piston rod, the end of the piston rod is provided with a first wedge surface, and the end of the sliding rod is provided with a second wedge surface matched with the first wedge surface.
8. The hinge mechanism for automatic synchronous door opening and closing according to claim 7, characterized in that: A movable head is installed at the end of the piston rod, a first wedge surface is arranged on one side of the movable head, and a pressing plane is formed on the top of the movable head to press on the sliding rod.
9. The hinge mechanism for automatic synchronous door opening and closing according to claim 7, characterized in that: The driving component, the elastic component and the damper are all installed in a mounting box, and a slideway for the sliding seat to slide is arranged in the mounting box.
10. A cabinet box using a hinge mechanism as described in any one of claims 1 to 9, comprising a cabinet body, two cabinet doors are mounted on the cabinet body via a pivot, two hinge mechanisms are mounted on the top of the cabinet body, driving components in the two hinge mechanisms rotate synchronously with the corresponding cabinet doors, a connector is provided between the two hinge mechanisms, a connecting gear set is provided in the connector, the connecting gear set is meshed with two connecting racks at the same time, and the two connecting racks are connected to sliding rods in the two hinge mechanisms via connecting rods respectively.