Hinge for hinging desk plate and desk bucket of desk and desk using hinge

Abstract

The invention discloses a hinge for hinging a desk plate and a desk bucket of a desk and the desk using the hinge, and belongs to the field of school furniture. A hinge for hinging a desk plate and a desk bucket of a desk comprises a desk plate wing provided with a hinge hole at one opposite end and connected with the desk plate at the other end, a desk bucket wing provided with a hinge hole at one opposite end and connected with the desk bucket at the other end, and a first movable wing comprising a connecting plate and hinge holes arranged at two opposite ends of the connecting plate, the hinge hole in one end is a table plate hinge hole jointly hinged to the hinge hole of the table plate wing, the hinge hole in the other end is a table bucket hinge hole jointly hinged to the hinge hole of the table bucket wing, the distance between the hinge hole of the table plate wing and the hinge hole of the table bucket wing is 5-13 cm, and the thickness difference between the hinge hole of the table plate wing and the hinge hole of the table bucket wing is more than 20 times. The production problem of sliding adjustment of the table plate and the table bucket is solved, and the balance problem of three-state conversion is also solved.

Description

Technical Field

[0001] A hinge for the tabletop and drawer of a hinged school desk, and a school desk using this hinge, belong to the field of school furniture, and particularly relate to a three-wing, two-axis hinge with a movable wing length of 5-13 cm. Background Technology

[0002] The invention disclosed in application number 202320854531.1, entitled "A Hinged Device for a Tabletop and a Drawer and a Flip-Top Desk Using the Device," is a hinged device that can adjust not only the relative angle between the tabletop and the drawer but also the relative distance between them, allowing the connected tabletop and drawer to be in various states: a study state, a passageway state, and a nap state. However, this hinged device uses a sliding track technology, which is prone to sliding difficulties if not properly implemented. It is also difficult to manufacture, and balancing the two sliding tracks on the left and right sides during operation can easily lead to uneven sliding or even jamming.

[0003] In existing technology, there are three-wing, two-axis hinges, which include two fixed wings each with a hinge hole, and one movable wing with hinge holes at each opposite end. Each movable wing's hinge hole connects to one of the hinge holes in a fixed wing. Springs are also typically included, and these are used for double doors. The connecting plate between the two hinge holes in the movable wing only serves to connect the two hinge holes; the distance between the two hinge holes is relatively short, as a shorter distance saves costs. For large double doors using two-axis hinges, robustness is the primary consideration, and the sheet metal is often very thick, resulting in a relatively small distance between the two hinge holes. Summary of the Invention

[0004] Since existing three-wing two-axis hinges cannot solve the problem, the applicant has developed a three-wing two-axis hinge, the specific technical solution of which is as follows: Technical Solution 1: A hinge for the tabletop and drawer of a hinged desk, comprising a tabletop wing with a hinge hole at one end and connected to the tabletop at the other end, a drawer wing with a hinge hole at one end and connected to the drawer at the other end, and a first movable wing. The first movable wing includes a connecting plate and hinge holes at opposite ends of the connecting plate. The hinge hole at one end is a tabletop hinge hole that hinges together with the hinge hole of the tabletop wing, and the hinge hole at the other end is a drawer hinge hole that hinges together with the hinge hole of the drawer wing. This allows the first movable wing to adjust not only the relative angle between the tabletop and the drawer, but also the relative distance between them. The tabletop and drawer hinged to the first movable wing can be in a study state, a passage state, and a nap state. Optionally, the distance between the hinge hole of the tabletop wing and the hinge hole of the drawer wing is between 5 cm and 13 cm, and the thickness difference with the connecting plate is more than 20 times.

[0005] The two sets of hinge holes that are jointly hinged share the same hinge axis. In this design, the hinge holes of the first movable wing's tabletop and the tabletop wing share the same hinge axis, as do the hinge holes of the drawer and the drawer wing, forming a three-wing, two-axis structure. It is important to note that both ends of the first movable wing can rotate relative to the tabletop wing and the drawer wing, changing their relative positions. The tabletop wing can be fixed in different positions to form a learning state, a passage state, and a nap state. Each state may have multiple sub-states, such as a learning sub-state with different tabletop tilt angles. The rotatable feature of the first movable wing distinguishes it from a three-wing, two-axis hinge where all three wings are fixed.

[0006] The traditional free-swing door uses a three-wing, two-axis hinge, where the connecting plate between the two axes only serves to connect them. This design differs; the connecting plate of the first movable wing adjusts the distance between the two tabletops and the drawer. The connecting plate must not only provide adjustment to clearly differentiate between study, passageway, and nap positions, but also respect the limited space in a classroom setting. Typically, the front-to-back adjustment distance between the tabletop and drawer needs to be greater than 10 cm to demonstrate its value; if it exceeds 26 cm, it will affect other students in the front row. The optimal adjustment distance is around 16 cm. The distance between the hinge holes of the tabletop wing and the drawer wing is essentially the same as the distance between the tabletop hinge hole and the drawer hinge hole of the first movable wing. Based on the first movable wing's connecting plate extending from the center to both ends (front, back, top, and bottom), the distance between the tabletop hinge hole and the drawer hinge hole should be between 5 cm and 13 cm. Limiting the distance between the two hinge holes of the first movable wing, unlike the dual-axis hinges used in free-swing doors, is the core innovation of this design.

[0007] The weight of the tabletop rests on the drawer, making the tabletop relatively light due to the lack of stringent load-bearing requirements. The hinges connecting the tabletop and drawer are also made of thinner material. The first movable wing, hinged between the tabletop wing and the drawer wing, is significantly larger than the wing hinged at both ends, designed to adjust the position of the tabletop and drawer. The distance between the hinge holes of the tabletop wing and the drawer wing is often tens or even hundreds of times the thickness of the material. For example, for 2mm thick material, it's over 25 times the thickness, and for 2.5mm thick material, it's 20 times. In other words, the double-axis hinge connecting the tabletop and drawer is different from other double-axis hinges. Even other double-axis hinges with a distance between the two hinge holes of the movable wing between 5cm and 13cm will be substantially different from this solution because they lack the two characteristics mentioned above.

[0008] Beneficial effects: It bypasses the production difficulties of sliding adjustment between the tabletop and the drawer, and also bypasses the balance problem of the three-state transformation.

[0009] Technical Solution 2: As a preferred embodiment of Technical Solution 1, it further includes a second movable wing with hinge holes at both ends. The hinge hole at one end of the second movable wing is hinged together with the hinge hole at one end of the first movable wing, and the hinge hole at the other end is hinged together with either the hinge hole of the tabletop wing or the hinge hole of the table drawer wing.

[0010] Adding a second movable wing necessitates the addition of a hinge axis, resulting in a four-wing, three-axis structure with two fixed wings and two rotating wings. While a three-wing, two-axis hinge already achieves the three-state transition requirement, the transition between the tabletop and drawer is rather rigid. Adding a second movable wing makes the hinge rotation smoother, expands the tabletop and drawer's states, and further improves user comfort.

[0011] Effective results: Smoother state transitions and more comfortable use.

[0012] Technical Solution 3: As a preferred embodiment of Technical Solution 1, the distance from the center of the joint hinge between the table wing and the first movable wing to the connecting plate of the table wing is smaller than the distance from the center of the joint hinge between the table wing and the first movable wing to the connecting plate of the first movable wing, which is smaller than the thickness of the connecting plate of the first movable wing, so that the connecting plate of the first movable wing can fit against the connecting plate of the table wing.

[0013] Typically, the two connecting plates of a hinge are equidistant from the center of their common hinge, and the connecting plates of the two hinged wings can be axially symmetrically located on either side of the common hinge axis. If a centrally symmetrical common hinge is used, they will not fit together due to the equidistant center distance. This design adopts a centrally symmetrical layout. To ensure proper fit, the center distance is adjusted: the center distance from the first movable wing to the center of the common hinge is smaller than the center distance from the table wing to the center of the common hinge, which is equal to the thickness of the first movable wing.

[0014] Beneficial effects: The first movable wing fits onto the tabletop wing, and the tabletop wing fits onto the rear wall of the drawer, resulting in a more stable connection and less axial sway.

[0015] Technical Solution 4: As a preferred embodiment of Technical Solution 1, either the table wing or the table drawer wing has a common hinge axis with the first movable wing that is movable. The movable hinge axis includes a pin hole and a pin that matches the pin hole, which can confine the movable hinge axis in the common hinge hole.

[0016] Beneficial effects: Separating the tabletop and drawer connected to the hinge into two parts makes it easier to place and transport the tabletop and drawer separately, saving storage space, facilitating classification and protection, and reducing transportation costs and damage rates.

[0017] Technical Solution 5: A desk includes a tabletop and a drawer, the bottom of the drawer is inclined toward the head of a seated student, the rear wall of the drawer is perpendicular to the bottom of the drawer and is inclined with the bottom of the drawer, optionally, it also includes the hinge of the tabletop and drawer of the hinged desk described in technical solutions 1, 2, 3 or 4, and the drawer wings are fixedly connected to the upper edge of the rear wall of the drawer.

[0018] In the invention application No. 202223087058.3 entitled "A Desk and Chair Kit and the Desk and Chair Thereof," based on the invention application No. 202220719170.5 entitled "A Desk," a lunch break solution for a desk and chair is disclosed. A fixed, rotating tabletop serves as a pillow for lunch breaks. However, there is often a gap between the tabletop and the chair back, affecting the quality of rest. Furthermore, fixing the tabletop is inconvenient and poses a safety hazard to some extent. In the invention application No. 202320854531.1 entitled "A Hinged Device for a Tabletop and a Drawer and a Flip-Top Desk Using This Device," while disclosing the hinged device for the tabletop and drawer, a desk where the tabletop can slide down against the back wall of the drawer is also disclosed. This new type of flip-top desk, limited by the connection method between the tabletop and drawer, is prone to rotational jamming, affecting comfort and reducing lifespan.

[0019] Beneficial effects: Using hinges instead of slides eliminates the bottleneck in connecting the tabletop and drawer, which is conducive to the promotion and application of hunchback desks.

[0020] Technical Solution 6: As a preferred embodiment of Technical Solution 5, it also includes a wall-mounting device. The wall-mounting device includes two sets of hanging sub-devices: one is a tabletop hanging sub-device installed on the tabletop, and the other is a table drawer hanging sub-device installed on the rear wall of the table drawer. When in the lunch break state, the wall-mounting device is integrated to fix the tabletop to the rear wall of the table drawer.

[0021] The drawer attachment device can be a matching slide and hook. The slide is set on the rear wall of the drawer, and the hook is set on the drawer. The slide has an inlet and outlet for the hook. When the drawer slides down, the hook enters the inlet and outlet and slides downward, securing itself to the rear wall of the drawer by gravity. Similarly, when the drawer slides up, the hook slides upward and exits the inlet and outlet, freeing the drawer from the constraint of the rear wall.

[0022] Beneficial effects: It stabilized the lunch break state and eliminated the problem of fixing the table during the lunch break.

[0023] Technical Solution 7: As a preferred embodiment of Technical Solution 5, it also includes a tray locking device. The tray locking device includes two sets of locking sub-devices: one is a tray locking sub-device set on the tray, and the other is a tray locking sub-device set on the upper edge of the tray. When in the learning state, the tray locking device is integrated and locks the tray to the upper edge of the tray.

[0024] The tabletop locking device can consist of a matching hook and a through hole. The hook is mounted on the tabletop, and the through hole is located on the table drawer. When the tabletop rotates closer to the drawer, the hook engages the through hole, securing the tabletop to the upper edge of the drawer. When the tabletop rotates away from the drawer, the hook disengages from the through hole, releasing the lock. This locking device is generally used for moving the table and can be recessed, hinged to the tabletop and usually hidden within it. It is rotated into the through hole when needed, improving safety during use.

[0025] Beneficial effects: It helps lock the tabletop and drawer together, making it easier to move the desk.

[0026] Technical Solution 8: As a preferred embodiment of technical solutions 5, 6 or 7: The drawer includes a side frame, the side frame includes a panel perpendicular to the side wall of the drawer, and the drawer wings, the drawer hanging device and the drawer locking device are all set on the panel.

[0027] Beneficial effects: Concentrating openings on a single board surface facilitates centralized opening, reduces processes, and improves efficiency. Furthermore, concentrating critical load-bearing components on the frame also enhances the table drawer's sturdiness. Attached Figure Description

[0028] Figure 1 Hinges connecting the hinged tabletop and drawer (in learning mode) Figure 2 Hinges connecting the tabletop and drawer (accessible mode) Figure 3 Hinges connecting the tabletop and drawer (during lunch break) Figure 4 Desk (in a learning state) Figure 5 Desks (Aisle Status) Figure 6 Desk (during lunch break) Wherein 1 is the tabletop wing, 2 is the table drawer wing, 3 is the first movable wing, 4 is a screw hole, 5 is the tabletop wing hinge hole, 6 is a welding plate, 7 is the table drawer wing hinge hole, 8 is the tabletop hinge hole, and 9 is the table drawer hinge hole. 11 is the tabletop, 12 is the drawer, 13 is the side frame, 14 is the tabletop, 15 is the hinge, 16 is the wall-mounting device, 17 is the tabletop hanging device, 18 is the drawer hanging device, 19 is the drawer locking device, 20 is the tabletop locking device, and 21 is the drawer locking device. Detailed implementation method: Example 1: such as Figure 1-3A hinge for a hinged desk's tabletop and drawer includes a tabletop wing 1 with a tabletop wing hinge hole 5 at one end and a drawer wing 2 with a drawer wing hinge hole 7 at one end and a drawer wing 2 with a welding plate 6 at the other end. The hinge also includes a first movable wing 3, which includes a connecting plate and hinge holes at opposite ends of the connecting plate. One hinge hole is a tabletop hinge hole 8 that hinges with the hinge holes of the tabletop wing, and the other hinge hole is a drawer hinge hole 9 that hinges with the hinge holes of the drawer wing. This allows the first movable wing 3 to adjust not only the relative angle between the tabletop and the drawer but also the relative distance between them. The tabletop and drawer hinged to the first movable wing 3 are in a study mode, a passageway mode, and a nap mode. The distance between the tabletop wing hinge hole 5 and the drawer wing hinge hole 7 is between 5 cm and 13 cm, and the thickness difference with the connecting plate is more than 20 times.

[0029] The distance from the center of the joint hinge between the table wing 2 and the first movable wing 3 to the connecting plate of the table wing 2 is smaller than the distance from the center of the joint hinge between the table wing 2 and the first movable wing 3 to the connecting plate of the first movable wing 3, which is smaller than the thickness of the connecting plate of the first movable wing 3, so that the connecting plate of the first movable wing 3 can fit against the connecting plate of the table wing 2.

[0030] Example 2: such as Figure 1-6 A school desk includes a tabletop 11 and a drawer 12. The bottom of the drawer 12 is inclined toward the head of a seated student. The rear wall of the drawer 12 is perpendicular to the bottom of the drawer 12 and is inclined along with the bottom of the drawer 12. The drawer 12 includes a side frame 13, which includes a panel 14 perpendicular to the side wall of the drawer 12. It also includes a hinge 15 that connects the tabletop 11 and the drawer 12. The drawer wing 2 is fixedly connected to the upper edge of the rear wall of the drawer 12.

[0031] It also includes a wall-mounting device 16, which includes two sets of hanging devices: a tabletop hanging device 17 installed on the tabletop 11 and a drawer hanging device 18 installed on the rear wall of the drawer 12. When in the lunch break state, the wall-mounting devices are integrated to fix the tabletop 11 to the rear wall of the drawer 12.

[0032] It also includes a drawer locking device 19, which includes two locking sub-devices: a tabletop locking sub-device 20 set on the tabletop and a drawer locking sub-device 21 set on the upper edge of the drawer. When in the learning state, the drawer locking device is integrated to lock the tabletop 11 to the upper edge of the drawer 12.

[0033] The table drawer wing 2, the table drawer hanging device 18, and the table drawer locking device 21 are all installed on the panel 14.

Claims

1. A hinge for connecting a desk board and a desk bucket of a hinged desk, comprising a desk board wing having a hinge hole at one end and connected to the desk board at the other end, a desk bucket wing having a hinge hole at one end and connected to the desk bucket at the other end, and a first movable wing comprising a connecting plate and having a hinge hole at each end, one end of the hinge hole being a desk board hinge hole co-hinged with the hinge hole of the desk board wing, and the other end of the hinge hole being a desk bucket hinge hole co-hinged with the hinge hole of the desk bucket wing, so that the first movable wing can not only adjust the relative angle of the desk board and the desk bucket, but also adjust the relative distance of the desk board and the desk bucket, and the desk board and the desk bucket co-hinged with the first movable wing comprise a learning state, a passage state and a lunch break state, characterized in that: The distance between the hinge hole of the table board wing and the hinge hole of the table hopper wing is between 5cm and 13cm, which is more than 20 times the thickness of the connecting plate. ​ 2. The hinge according to claim 1, characterized in that: The second movable wing is provided with a hinge hole at each end, the hinge hole at one end of the second movable wing is hingedly connected with the hinge hole at one end of the first movable wing, and the hinge hole at the other end of the second movable wing is hingedly connected with the hinge hole of the table board wing or the hinge hole of the table hopper wing.

3. The hinge for the desk top and desk well of a hinged desk according to claim 1, characterized in that: The distance from the center of the circle where the table hopper wing and the first movable wing are hingedly connected to the connecting plate of the table hopper wing is less than the distance from the center of the circle where the table hopper wing and the first movable wing are hingedly connected to the connecting plate of the first movable wing by the thickness of the connecting plate of the first movable wing, so that the connecting plate of the first movable wing can be attached to the connecting plate of the table hopper wing.

4. The hinge for the desk top and desk well of a hinged desk according to claim 1, characterized in that: The hingedly connected shaft of the table board wing or the table hopper wing with the first movable wing is movable, the movable hingedly connected shaft comprises a pin hole, and a pin shaft matched with the pin hole is further provided, so that the movable hingedly connected shaft can be limited in the hingedly connected hole.

5. A desk comprising a desk top and a desk well, the well bottom of said desk well being inclined toward the head of a student sitting on a chair, the back wall of said desk well being perpendicular to the well bottom of said desk well, and inclining with the well bottom of said desk well, characterized in that: The hinge of the table board and the table hopper of the hingedly connected desk is further provided, the table hopper wing is fixedly connected to the upper edge of the rear wall of the table hopper.

6. A desk according to claim 5, characterised in that: The plate wall hanging device is further provided, the plate wall hanging device comprises two sets of hanging sub-devices, one is a table board hanging sub-device provided on the table board, and the other is a table hopper hanging sub-device provided on the rear wall of the table hopper, when in the lunch break state, the plate wall hanging device is connected and integrated, and the table board is fixed on the rear wall of the table hopper.

7. A desk according to claim 5, characterised in that: The plate hopper locking device is further provided, the plate hopper locking device comprises two sets of locking sub-devices, one is a table board locking sub-device provided on the table board, and the other is a table hopper locking sub-device provided on the upper edge of the table hopper, when in the learning state, the plate hopper locking device is connected and integrated, and the table board is locked on the upper edge of the table hopper.

8. The desk according to claims 5-7, characterized in that the table hopper comprises a side frame, the side frame comprises a plate surface perpendicular to the side wall of the table hopper, and the table hopper wing, the table hopper hanging sub-device and the table hopper locking sub-device are all arranged on the plate surface.

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