A synchronous opening and closing mechanism for an upwardly opening door

Abstract

A synchronous opening and closing mechanism of an upward turning door body comprises two sets of upward turning devices symmetrically installed on both sides of the upper end of the inner side wall of a cabinet body, the upper end of a cabinet door is installed on the cabinet body through the two sets of upward turning devices, the upward turning device comprises a slide rail installed on the inner side wall of the cabinet body and a sliding seat slidingly connected in the slide rail, a door hinge is installed on the sliding seat, a rack is further installed on the bottom of the slide rail between the two sets of upward turning devices, a first gear and a second gear are respectively engaged with the rack of the slide rail on the corresponding side, the sliding seat slides to drive the first gear and the second gear to be transmitted along the rack, and the synchronous movement of the two sets of upward turning devices is realized through linkage of a synchronous rod and an extension rod. The sliding seat in the upward turning device cooperates with the slide rail to drive the cabinet door to be stored in the cabinet body, the space utilization rate is high, the always-open state of the cabinet door is realized, and the use convenience of users is improved.

Description

Technical Field

[0001] This utility model relates to the field of cabinet door opening and closing technology, specifically a mechanism for synchronous opening and closing of an upward-folding door. Background Technology

[0002] Flip-up cabinet doors are commonly used in kitchen wall cabinets, display cabinets, and other furniture, and are widely popular because they allow users to easily access items and save space. In the market, flip-up cabinet doors typically use hinges or simple support rods to achieve the upward opening mechanism. When the door is opened, it flips upwards and outwards, occupying the working space in front of the cabinet. Especially in a kitchen environment, an open wall cabinet door may obstruct user movement on the countertop and pose a risk of collision. Secondly, for display cabinets that need to remain open for extended periods to showcase their contents, the protruding door significantly impacts the overall aesthetics. The door panel hanging out in the air appears abrupt and uncoordinated, hindering the clear display of the items inside.

[0003] Secondly, the cabinet door itself will generate a certain amount of vibration during the opening process. This vibration will be particularly severe for cabinet doors that are wider or heavier, which may cause a certain opening deviation on both sides of the cabinet door. The two sides of the cabinet door cannot open synchronously, and the opening process will stop and get stuck, making it impossible for the user to open the cabinet door smoothly. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of existing technologies and provide a simple structure, low manufacturing cost, high utilization of cabinet door storage space, smooth and reliable opening and closing process, extended service life, convenient operation, and beautiful overall appearance for an upward-opening door synchronous opening and closing mechanism.

[0005] The purpose of this utility model is achieved in the following way: a synchronous opening and closing mechanism for an upward-flipping door, comprising two sets of upward-flipping devices symmetrically installed on both sides of the upper end of the inner wall of a cabinet. The upper end of the cabinet door is installed to the cabinet body through the two sets of upward-flipping devices. Each upward-flipping device includes a slide rail installed on the inner wall of the cabinet and a slide block slidably connected therein. A door hinge is installed on the slide block, and the door hinge extends outward and connects to the cabinet door. When the cabinet door is flipped up, the door hinge drives the slide block to slide along the slide rail, thereby opening the cabinet door. A synchronization device is also provided between the two sets of upward-flipping devices. The synchronization device includes a synchronization rod and a telescopic rod respectively rotatably connected to the slide blocks on both sides. The telescopic rod is fitted into the synchronization rod. The synchronization rod is connected to a first gear, and the telescopic rod is connected to a second gear. The synchronization device also includes a rack installed at the bottom of the slide rail. The first gear and the second gear respectively mesh with the rack of the corresponding side slide rail. When the slide block slides, it drives the first gear and the second gear to drive along the rack. Through the linkage of the synchronization rod and the telescopic rod, the synchronous movement of the two sets of upward-flipping devices is achieved.

[0006] The outer end of the synchronizing rod is equipped with a first drive shaft, and the outer end of the telescopic rod is equipped with a second drive shaft. The first gear is coaxially connected to the first drive shaft, and the second gear is coaxially connected to the second drive shaft.

[0007] The slide is equipped with a bearing, and the first drive shaft and the second drive shaft are rotatably connected to the slide on the corresponding side through the bearing.

[0008] The synchronizing rod is hollow to form an adjustment groove, and the telescopic rod is axially telescopically inserted into the adjustment groove; the end of the adjustment groove is provided with an external thread, and a locking nut is fitted on the outside of the telescopic rod. The locking nut is screwed into the external thread to lock the position of the telescopic rod in the synchronizing rod.

[0009] The aforementioned flip-up device also includes a buffer cylinder installed on the slide, with the other end of the buffer cylinder connected to the cabinet door.

[0010] The slide block is also equipped with an auxiliary guide wheel facing the side panel of the cabinet, and the auxiliary guide wheel slides on the side panel of the cabinet.

[0011] The beneficial effects of this utility model are: 1. Simple structure, low manufacturing cost, and improved market competitiveness.

[0012] 2. The sliding base and slide rail in the upward-flipping device work together to drive the cabinet door into the cabinet body for storage, which has a high space utilization rate and allows the cabinet door to be kept open, improving the user's convenience.

[0013] 3. The concealed storage in the cabinet significantly enhances the overall aesthetics of the furniture and improves the harmony of the home environment.

[0014] 4. A synchronization device is installed to ensure that the movement of the two sets of upward-opening devices is synchronized, accurately guaranteeing the synchronous opening and closing of both sides of the cabinet door, and ensuring that the cabinet door is stable, smooth and reliable during the opening and closing process.

[0015] 5. The synchronization device uses gears and racks for transmission, resulting in ideal transmission effect and precise and stable transmission.

[0016] 6. The width of the synchronization device is adjustable, which can flexibly adapt to the installation of cabinets of different widths, making it convenient for users to debug and install the synchronization device. Attached Figure Description

[0017] Figure 1 This is a rendering of the final assembly of this utility model.

[0018] Figure 2 This is a schematic diagram of the cabinet door in the fully open state in this utility model.

[0019] Figure 3In this utility model Figure 2 Enlarged view of point A.

[0020] Figure 4 This is a schematic diagram showing the working state of the flipping device and the synchronization device in this utility model.

[0021] Figure 5 This is a schematic diagram of the structure of the hidden part flipping device in this utility model.

[0022] Figure 6 This is an exploded view of the structure of the flipping device and the synchronization device in this utility model.

[0023] Figure 7 This is a schematic diagram of the synchronization device in this utility model. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings. A hinged door synchronous opening and closing mechanism includes two sets of hinged devices 3 symmetrically installed on both sides of the upper end of the inner wall of a cabinet 1. The upper end of the cabinet door 2 is installed to the cabinet 1 via the two sets of hinged devices 3. Each hinged device 3 includes a slide rail 31 installed on the inner wall of the cabinet 1 and a slide block 32 slidably connected therein. A door hinge 33 is installed on the slide block 32, extending outward and connecting to the cabinet door 2. When the cabinet door 2 is hinged upward, the door hinge 33 drives the slide block 32 to slide along the slide rail 31, thereby opening the cabinet door 2. A synchronous device 4 is also provided between the two sets of hinged devices 3. The synchronous device 4 includes separately rotating... A synchronizing rod 41 and a telescopic rod 42 are connected to the two sliding blocks 32 on both sides. The telescopic rod 42 is fitted into the synchronizing rod 41. The synchronizing rod 41 is connected to a first gear 44, and the telescopic rod 42 is connected to a second gear 45. The synchronizing device 4 also includes a rack 43 installed at the bottom of the slide rail 31. The first gear 44 and the second gear 45 respectively mesh with the rack 43 on the corresponding side of the slide rail 31. The sliding block 32 slides, driving the first gear 44 and the second gear 45 to drive along the rack 43. Through the linkage of the synchronizing rod 41 and the telescopic rod 42, the synchronous movement of the two sets of flipping devices 3 is realized.

[0025] Two sets of upward-opening devices are symmetrically installed on both sides of the upper inner wall of the cabinet. The cabinet doors are then connected to the cabinet via these devices. Each upward-opening device includes a slide rail installed on the inner wall of the cabinet and a sliding base slidably connected therein. A hinge is installed on the sliding base and connects to the cabinet door. When the cabinet door is opened, the hinge first causes the door to flip upwards. As the door flips, it drives the sliding base to slide along the slide rail, thus causing the door to retract into the cabinet. This allows the door to retract completely into the cabinet after opening, avoiding the space occupied by traditional upward-opening doors in front of the cabinet, thus improving user convenience and space utilization. Furthermore, the retraction of the door into the cabinet results in a cleaner overall appearance, effectively enhancing the overall harmony and aesthetics of the home environment.

[0026] It should be noted that, to ensure synchronized movement of the two sets of tilting mechanisms, a synchronization device is installed between them. This synchronization device includes a synchronization rod and a telescopic rod rotatably connected to the slides on both sides. The telescopic rod is fitted into the synchronization rod, thus connecting the two as a single unit. When the slides begin to slide, the first gear connected to the synchronization rod and the second gear connected to the telescopic rod mesh with the rack of the corresponding slide rail, and roll along the rack as the slide moves. Through the meshing of the gears and rack, and the linkage of the synchronization rod and the telescopic rod, the displacement of one slide is transferred to the other, driving both slides to slide at the same speed and distance. This ensures precise synchronization of the two tilting mechanisms, preventing tilting or jamming during cabinet door opening and closing, resulting in smooth and stable opening and closing, improving the reliability and stability of the cabinet door opening and closing mechanism, and enhancing the user experience.

[0027] The outer end of the synchronizing rod 41 is fitted with a first drive shaft 5, and the outer end of the telescopic rod 42 is fitted with a second drive shaft 6. The first gear 44 is coaxially connected to the first drive shaft 5, and the second gear 45 is coaxially connected to the second drive shaft 6. The first drive shaft at the outer end of the synchronizing rod is coaxially connected to the first gear, and the second drive shaft at the outer end of the telescopic rod is coaxially connected to the second gear. This coaxial connection ensures tight fit and precise transmission between components, avoiding loose connections or transmission errors, and improving the overall reliability of the mechanism. Furthermore, the two gears do not directly drive the synchronizing rod and the telescopic rod, but are connected through a dedicated drive shaft. When the gears mesh with the rack, the transmission force directly, efficiently, and without deviation transmits the rotational torque to the drive shaft, thereby driving the synchronizing rod and the telescopic rod to rotate synchronously, resulting in an ideal transmission effect.

[0028] A bearing 7 is installed inside the slide 32. The first drive shaft 5 and the second drive shaft 6 are rotatably connected to the corresponding side of the slide 32 via the bearing 7. Using the bearing as an intermediate connecting component, the drive shaft can rotate smoothly relative to the slide with the support of the bearing, reducing the friction when the drive shaft rotates inside the slide. This makes the rotation of the synchronizing rod and the telescopic rod easier and smoother, further improving the stability of the cabinet door opening and closing. Furthermore, the bearing effectively reduces wear between components, provides high transmission precision, extends the service life of the drive shaft and the slide, and helps maintain the precise meshing of the gears and rack, ensuring the accuracy of synchronous transmission.

[0029] The synchronizing rod 41 has a hollow adjusting groove, and the telescopic rod 42 is axially telescopically inserted into this adjusting groove. The end of the adjusting groove has an external thread, and a locking nut 8 is fitted onto the outside of the telescopic rod 42. The locking nut 8 is screwed into the external thread to lock the position of the telescopic rod 42 within the synchronizing rod 41. The hollow adjusting groove inside the synchronizing rod allows for axial length adjustment, accommodating cabinets of different widths and providing fine-tuning capabilities during installation and maintenance, thus improving the versatility and ease of installation of the synchronizing device. After axial length adjustment, the locking nut on the telescopic rod is screwed into the external thread at the end of the adjusting groove to lock the relative position of the telescopic rod on the synchronizing rod, ensuring the stability of the synchronizing device during long-term use.

[0030] The aforementioned upward-flipping device 3 also includes a buffer cylinder 34 installed on the slide 32, with the other end of the buffer cylinder 34 connected to the cabinet door 2. One end of the buffer cylinder is mounted on the slide of the upward-flipping device, and the other end is connected to the cabinet door. When the cabinet door is opened, the buffer cylinder provides an auxiliary upward thrust, allowing users to easily lift even heavy cabinet doors, improving user comfort. When the cabinet door is closed, the buffer cylinder acts as a damper, controlling the downward speed of the cabinet door and preventing impact when the door falls violently or closes, achieving a quiet and safe closing effect, avoiding damage to components, and extending the service life of the upward-flipping device.

[0031] The slide block 32 is also equipped with an auxiliary guide wheel facing the side panel of the cabinet 1. The auxiliary guide wheel slides on the side panel of the cabinet 1. The auxiliary guide wheel is mounted on the slide block and faces the side panel of the cabinet. When the slide block slides along the slide rail, the auxiliary guide wheel remains in contact with the side panel and provides additional support and guidance, effectively preventing tilting and wobbling, ensuring the smoothness and straightness of the slide block's movement, and improving the overall stability of the cabinet door. Secondly, the auxiliary guide wheel has rolling contact, which improves the smoothness of the cabinet door's opening and closing, making the opening and closing process smoother and less jerky, thereby extending the service life of the entire opening and closing mechanism.

[0032] Working principle: When the user opens the cabinet door, the hinge connected to the slide will drive the cabinet door to flip upward. During this upward flipping process, the hinge guides and drives the slide to slide into the cabinet along the slide rail installed on the inner side wall of the cabinet. This allows the cabinet door to be smoothly stored inside the cabinet after it is fully opened, without taking up extra external space and maintaining a clean overall appearance.

[0033] Furthermore, to ensure synchronized movement of the two sets of tilting mechanisms, a synchronization device is installed between them. This synchronization device includes a synchronization rod and a telescopic rod rotatably connected to the slides on both sides. The telescopic rod is fitted into the synchronization rod, thus connecting the two as a single unit. When the slides on both sides begin to slide, the first gear connected to the synchronization rod and the second gear connected to the telescopic rod mesh with the rack of the corresponding slide rail, and roll along the rack following the movement of the slide. Through the meshing of the gears and rack, and the linkage of the synchronization rod and the telescopic rod, the displacement of one slide is transferred to the displacement of the other slide, driving both slides to slide at the same speed and distance. This ensures precise synchronization of the two tilting mechanisms, preventing tilting or jamming during cabinet door opening and closing, resulting in smooth and stable opening and closing, improving the reliability and stability of the cabinet door opening and closing mechanism, and enhancing the user experience. Secondly, the adjustable connection between the synchronization rod and the telescopic rod allows the synchronization device to flexibly adapt to cabinets of different widths.

[0034] The first gear is connected to the synchronizing rod via the first drive shaft, and the second gear is connected to the synchronizing rod via the second drive shaft. The drive shafts serve as transmission components, ensuring reliable transmission through the meshing of the gears and rack. Both drive shafts are connected to corresponding slides via bearings. The bearings effectively reduce rotational friction within the slides, improving the smoothness and durability of the cabinet door's opening and closing motion, thus allowing for widespread application.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A hinged door synchronous opening and closing mechanism, comprising two sets of hinged devices (3) symmetrically installed on both sides of the upper end of the inner wall of a cabinet (1), wherein the upper end of the cabinet door (2) is installed with the cabinet (1) through the two sets of hinged devices (3), characterized in that: The upward-flipping device (3) includes a slide rail (31) installed on the inner side wall of the cabinet (1) and a slide block (32) slidably connected therein. A door hinge (33) is installed on the slide block (32). The door hinge (33) extends outward and connects to the cabinet door (2). When the cabinet door (2) is flipped up, the door hinge (33) drives the slide block (32) to slide along the slide rail (31) to open the cabinet door (2). A synchronization device (4) is also provided between the two sets of upward flipping devices (3). The synchronization device (4) includes a synchronization rod (41) and a telescopic rod (42) that are rotatably connected to the two side slides (32). The telescopic rod (42) is fitted in the synchronization rod (41). The synchronization rod (41) is connected to a first gear (44), and the telescopic rod (42) is connected to a second gear (45). The synchronization device (4) also includes a rack (43) installed at the bottom of the slide rail (31). The first gear (44) and the second gear (45) respectively mesh with the rack (43) of the corresponding side slide rail (31). The slide block (32) slides, driving the first gear (44) and the second gear (45) to drive along the rack (43). The synchronization rod (41) and the telescopic rod (42) are linked to achieve the synchronous movement of the two sets of flipping devices (3).

2. The upward-opening synchronous opening and closing mechanism for a door according to claim 1, characterized in that: The outer end of the synchronizing rod (41) is extended with a first drive shaft (5), and the outer end of the telescopic rod (42) is extended with a second drive shaft (6). The first gear (44) is coaxially connected to the first drive shaft (5), and the second gear (45) is coaxially connected to the second drive shaft (6).

3. The upward-opening synchronous opening and closing mechanism for a door according to claim 2, characterized in that: The slide (32) is equipped with a bearing (7), and the first drive shaft (5) and the second drive shaft (6) are rotatably connected to the slide (32) on the corresponding side through the bearing (7).

4. The upward-opening synchronous opening and closing mechanism for a door according to claim 1, characterized in that: The synchronizing rod (41) is hollow to form an adjustment groove, and the telescopic rod (42) is axially telescopically inserted into the adjustment groove; the end of the adjustment groove is provided with an external thread, and the telescopic rod (42) is fitted with a locking nut (8), which is screwed to the external thread to lock the position of the telescopic rod (42) in the synchronizing rod (41).

5. The upward-opening synchronous opening and closing mechanism for a door according to claim 1, characterized in that: The upward flipping device (3) also includes a buffer cylinder (34) installed on the slide (32), and the other end of the buffer cylinder (34) is connected to the cabinet door (2).

6. The upward-opening synchronous opening and closing mechanism for a door according to claim 1, characterized in that: The slide (32) is also provided with an auxiliary guide wheel facing the side panel of the cabinet (1), and the auxiliary guide wheel slides on the side panel of the cabinet (1).

Images