Door plate assembly with turnover hinge and cabinet type furniture

Abstract

The invention relates to a cabinet body component composed of hinges, in particular to a door plate assembly with turnover hinges and cabinet type furniture. The door plate assembly comprises at least one fixed plate and at least one movable plate arranged on one side of the fixed plate. The hinge mechanism is arranged on the same face of the fixed plate and the movable plate and comprises a hinge base, a crank connecting rod, a first middle rod and a limiting rod, the crank connecting rod, the first middle rod and the limiting rod are sequentially connected, the crank connecting rod rotates around the hinge base so that the movable plate can be turned over relative to the fixed plate, and the first middle rod and the limiting rod are used for limiting the rotating angle of the crank connecting rod; the gear mechanism comprises a first gear arranged in the first direction and two second gears arranged in the second direction and arranged at intervals. Wherein each second gear is connected with one limiting rod, the first gear is a bevel gear, and the relative distance between the two second gears is adjustable, so that at least one of the two second gears can be meshed with or disengaged from the first gear.

Description

Technical Field

[0001] The present invention relates to cabinet components composed of hinges, and in particular to a door panel assembly and a cabinet furniture with a flipping hinge. Background Art

[0002] With the popularity of personalized home furnishing, the user's demand for customized cabinets or furniture is increasing day by day. In particular, it is hoped to integrate private and secure storage spaces therein for storing valuables, important documents or private items.

[0003] Currently, the privacy storage solutions on the market are mainly divided into two types: one is the traditional safe, usually an independent metal box, which needs to be embedded in the wall or cabinet, with inconvenient installation and usually high price; at the same time, it relies on mechanical passwords or keys, there are risks of forgetting, losing or being cracked, and it is usually not coordinated with the aesthetic design of customized cabinets. The other is the password lock drawer, which is equipped with an electronic password lock or a mechanical lock on an ordinary drawer, with a simple structure, but the storage space is still not private enough and it is difficult to perfectly integrate with customized cabinets of different sizes and styles.

[0004] Therefore, this application is proposed. Summary of the Invention

[0005] In order to solve the problems raised in the above background art, this application provides a door panel assembly and a cabinet furniture with a flipping hinge.

[0006] A door panel assembly with a flipping hinge provided in the first aspect of this application includes: at least one fixed plate, and at least one movable plate provided on one side of the fixed plate; at least one hinge mechanism provided on the same side of the fixed plate and the movable plate, including a hinge seat, and a crank connecting rod, a first intermediate rod and a limiting rod connected in sequence. By rotating the crank connecting rod around the hinge seat, the movable plate can be folded relative to the fixed plate, and the first intermediate rod and the limiting rod are used to limit the rotation angle of the crank connecting rod; a gear mechanism, including a first gear arranged in a first direction, and two second gears arranged in a second direction and spaced apart; wherein, each second gear is connected to a limiting rod, the first gear is a bevel gear, and the two second gears are set to be adjustable in relative distance so that at least one of the two second gears can be engaged or disengaged with the first gear, thereby restricting or releasing the rotational freedom of the movable plate during folding.

[0007] In a further aspect of the present application, the gear mechanism further includes: a ball shaft including a first shaft and a ball shaft sleeve sleeved on the first shaft; an electromagnetic clutch sleeved at the ball shaft sleeve, with one end connected to one of the second gears and the other end connected to the other second gear; a bearing structure connected to the first gear to position the first gear; a coaxial connection structure for connecting the second gear and the ball shaft sleeve to provide the second gear with a degree of freedom of rotation about the first shaft, and the ball shaft sleeve allows the second gear to move radially; the electromagnetic clutch enables the two second gears to mesh or disengage with the first gear.

[0008] In a further aspect of the present application, on one side of a fixed plate, there is a single movable plate, and two hinge mechanisms at different heights are provided on the fixed plate to connect the single movable plate, and the gear mechanism is arranged on the fixed plate and is respectively connected to the two hinge mechanisms; or on one side of a fixed plate, there are two movable plates, and two hinge mechanisms at different heights are provided on the fixed plate, and each hinge mechanism is independently connected to one movable plate, and the gear mechanism is arranged on the fixed plate and is respectively connected to the two hinge mechanisms.

[0009] In a further aspect of the present application, when there is a single movable plate on one side of a fixed plate, when one of the two second gears meshes with the first gear, or when the two second gears disengage from the first gear, the single movable plate can rotate; when both of the two second gears mesh with the first gear, the single movable plate is limited; when there are two movable plates on one side of a fixed plate, when one of the two second gears meshes with the first gear, or when the two second gears disengage from the first gear, the two movable plates can rotate independently, when both of the two second gears mesh with the first gear, the two movable plates can rotate in opposite directions, and are limited when any one of the movable plates reaches the limit position.

[0010] In a further aspect of the present application, the crank connecting rod includes a bent section, and a swing arm section connected to the bent section and the connection point is not located at the end of the bent section. One end of the swing arm section is hinged to a hinge seat, and the bent section is connected to the movable plate through a curved extension. The movable plate can be folded from parallel to the fixed plate to perpendicular to the fixed plate; one end of the first intermediate rod is hinged to the end of the bent section away from the movable plate, and the other end is rotatably connected to the limiting rod, wherein the length of the first intermediate rod is greater than that of the limiting rod.

[0011] In a further aspect of the present application, the hinge seat is arranged at the boundary of the fixed plate close to the movable plate; the first hinge point of the hinge seat is at a preset distance from the boundary line of the fixed plate, and has a height difference relative to the contact surface between the fixed plate and the hinge seat; so that when the fixed plate and the movable plate are parallel, the end face boundaries of the fixed plate and the movable plate can be mutually attached; when the fixed plate and the movable plate are perpendicular, the end face boundary of the movable plate is attached to the surface of the fixed plate.

[0012] The hinge seat includes a base and two protruding and spaced convex blocks arranged on the base; wherein, each convex block is inclined in a direction away from the movable plate and the height gradually increases, and a hinge hole is provided at the end of the convex block in the direction away from the movable plate to form a first hinge point.

[0013] In a further aspect of the present application, the number of crank connecting rods is two and they are spaced apart. One side of the crank connecting rod is in contact with the convex block, and the other side is in contact with the first intermediate rod; an installation area is reserved between the bending sections of the two crank connecting rods; a foldable placement rack can be assembled in the installation area.

[0014] In a further aspect of the present application, the hinge mechanism further includes a fixed support plate, and the bending section is fixed to the movable plate through the fixed support plate; a straightening bar is further provided on each movable plate close to the fixed plate.

[0015] In a second aspect of the present application, a cabinet furniture is further provided, including the above-mentioned door panel assembly, the fixed plate and the movable plate as cabinet components; and a cabinet door, which is connected to the cabinet.

[0016] Compared with the prior art, the beneficial effects of the present invention are: The hinge mechanism used in the present application forms a three-link structure with the crank connecting rod, the first intermediate rod and the limiting rod, and the limiting rod is used to connect the gear mechanism. The first gear and the second gear in the gear mechanism form a self-locking function; simply put, according to the characteristics of bevel gear meshing, the first gear meshes with two second gears that are not in the same direction as the first gear at the same time, and the two second gears will rotate in opposite directions. The present application cleverly associates each second gear with the limiting rod in the link structure and forms a self-locking relationship in cooperation with the rigid characteristics of the movable plate itself; compared with the prior art methods such as bolts and latches, the present application can realize that all parts are arranged on the same side of the fixed plate and the movable plate to form a fully hidden effect. When the first gear and the two second gears are in the meshing state, since the two second gears are both connected to the limiting rod, the movement of the limiting rod is restricted. At this time, the three-link becomes two links, and after the position of the first intermediate rod is indirectly locked, its crank connecting rod and the first intermediate rod only have rotational freedom and the translational freedom is restricted, resulting in the movable plate being unable to move further and being locked.

[0017] Through the above structural design, a new type of hidden door panel assembly inside the cabinet can be proposed. Its hinge mechanism and gear mechanism can be arranged on the hidden side inside the cabinet. The crank connecting rod rotates around the hinge seat, enabling the movable plate to fold relative to the fixed plate, and it is also completely blocked by the side of the movable plate facing away from the crank connecting rod. The crank connecting rod can be bent. After the crank connecting rod rotates around the hinge seat, the movable plate can be completely folded and attached to the fixed plate in the hidden state. After folding, the overall thickness of the fixed plate and the movable plate is the same, and the appearance is exactly the same as that of the ordinary cabinet board. It can achieve no exposed locks and handles, so that through natural occlusion, the "invisible safe" effect inside the cabinet can be realized, integrating the aesthetic and functional requirements of modern furniture.

[0018] The first intermediate rod and the limiting rod are used to limit the rotation angle of the crank connecting rod. At the same time, they can be used as the connection pair with the gear set to synchronously transmit the hinge movement to the gear mechanism. At the same time, the gear mechanism utilizes the gear meshing between the first gear and the second gear in different directions, as well as the adjustable pitch double-gear design of the second gear. By controlling the controllable meshing of the second gear and the first gear, and using the movable plate itself as a rigid constraint, mechanical self-locking can be achieved and the cost is relatively lower than the existing technology. At the same time, the gear meshing structure is more difficult to be damaged by external forces than the traditional bolt, preventing violent cracking; in the hidden state, when the gears are synchronously meshed, it is necessary to overcome the frictional forces on two tooth surfaces at the same time, so the bevel gear meshing of the gear mechanism forms a very stable mechanical dead point to realize the locking of the movable plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the door panel assembly with a flip hinge provided by the embodiment of the present application from the front view (the movable plate and the fixed plate present 90 degrees); Figure 2 It is a schematic structural diagram of the door panel assembly with a flip hinge provided by the embodiment of the present application from the back view of the fixed plate and the movable plate (the movable plate and the fixed plate present 90 degrees); Figure 3 It is a partial schematic diagram of the door panel assembly with a flip hinge provided by the embodiment of the present application; Figure 4 It is a schematic structural diagram of the gear mechanism of the door panel assembly provided by the embodiment of the present application; Figure 5 For the gear mechanism of the door panel assembly provided by the embodiment of the present application; Figure 6 It is an exploded schematic diagram of the gear mechanism of the door panel assembly provided by the embodiment of the present application; Figure 7 It is a simulation diagram of the door panel assembly provided by the embodiment of the present application from the back view (the movable plate and the fixed plate are parallel and attached); DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] The following is a specific description of the technical solutions of the present invention through specific embodiments and in combination with the attached Figures 1 to 6 drawings: The present application provides a door panel assembly 100 with a flip hinge, including at least one fixed plate A, and at least one movable plate B arranged on one side of the fixed plate A, at least one hinge mechanism 10 and a gear mechanism 20; the hinge mechanism 10 is arranged on the same surface of the fixed plate A and the movable plate B, and each hinge mechanism 10 includes a hinge seat 11, and a crank connecting rod 12, a first intermediate rod 13 and a limiting rod 14 connected in sequence. The hinge seat 11 is fixed to the fixed plate A, one end of the crank connecting rod 12 is connected to the hinge seat 11 and the other end is connected to the movable plate B. By rotating the crank connecting rod 12 around the hinge seat 11, the movable plate B can be folded relative to the fixed plate A. The first intermediate rod 13 and the limiting rod 14 are used to limit the rotation angle of the crank connecting rod 12; the gear mechanism 20 includes a first gear 21 arranged in the first direction H, and two second gears 22 arranged at intervals in the second direction W; wherein, each second gear 22 is connected to a limiting rod 14, the first gear 21 is a bevel gear, and the two second gears 22 are arranged with an adjustable relative distance, so that at least one of the two second gears 22 can be engaged or disengaged with the first gear 21, thereby restricting or releasing the rotational freedom of the movable plate B during folding.

[0022] The fixed plate A serves as the installation reference surface, and the movable plate B is connected to the fixed plate A through the hinge mechanism 10 to achieve relative folding. The hinge mechanism 10 is used to provide the degree of freedom for the flipping movement of the movable plate B, and the gear mechanism 20 provides the functions of flipping angle positioning and locking.

[0023] The hinge seat 11 is fixed to the fixed plate A, and the kinematic chain system is successively composed of a crank connecting rod 12, a first intermediate rod 13 and a limiting rod 14 hinged; wherein, the crank connecting rod 12 rotates around the hinge seat 11 to drive the movable plate B to fold, and the first intermediate rod 13 and the limiting rod 14 act together to limit the rotation angle of the crank connecting rod 12 through geometric constraints.

[0024] The first gear 21 of the gear mechanism 20 is arranged along the first direction H, the two second gears 22 are arranged along the second direction W and are spaced along the first direction H, and the first gear 21 is designed as a bevel gear.

[0025] For convenience of description, usually the first gear 21 is arranged vertically (i.e., in the first direction H), and the two second gears 22 are arranged horizontally, but are spaced apart vertically. By adjusting the distance between the second gears 22, at least one second gear 22 can be selectively meshed or disengaged with the first gear 21. Specifically: in the meshed state, multiple gear pairs form mechanical self-locking, restricting the rotational freedom of the movable plate B; in the disengaged state, the restriction is released, allowing free flipping.

[0026] In summary, through the above structure, the first intermediate rod 13 and the limit rod 14 in this application are used to limit the rotation angle of the crank connecting rod 12. At the same time, they can be used as connection pairs with the gear set to synchronously transmit the hinge movement to the gear set. At the same time, the gear mechanism utilizes the gear meshing between the first gear and the second gear in different directions, as well as the adjustable-spacing double-gear design of the second gear. By controlling the controllable meshing of the second gear and the first gear, and using the movable plate itself as a rigid constraint, mechanical self-locking can be achieved with a relatively lower cost compared to the prior art. At the same time, the gear meshing structure is more difficult to be damaged by external forces than traditional pins, preventing brute force cracking. When in the hidden state, when the second gears 22 are synchronously meshed with the first gear 21, it is necessary to overcome the tooth surface friction at two places at the same time. Therefore, the bevel gear meshing of the gear mechanism 20 forms a mechanical dead point, realizing the locking of the movable plate B.

[0027] The following provides a specific embodiment: The gear mechanism 20 further includes a ball shaft 23, an electromagnetic clutch 24, a bearing structure 25, and a coaxial connection structure 26.

[0028] The ball shaft 23 includes a first shaft 231 and a ball shaft sleeve 232 sleeved on the first shaft 231; the electromagnetic clutch 24 is sleeved at the ball shaft sleeve 232, with one end connected to one of the second gears 22 and the other end connected to the other second gear 22; the bearing structure 25 is connected to the first gear 21 to position the first gear 21 so that the first gear 21 can be in a fixed position and have rotational freedom.

[0029] One end of the coaxial connection structure 26 is connected to the second gear 22, and the other end is connected between the ball shaft sleeve 232 and the electromagnetic clutch 24 to form a ball sliding connection, so that both second gears 22 can rotate around the first shaft 231.

[0030] Specifically, the first shaft 231 adopts a high-strength core shaft to provide radial support. The outer wall of the ball shaft sleeve 232 includes multiple balls, and the coaxial connection structure 26 is provided with holes that can cooperate with the balls. As shown in the figure, each ball on the outer wall of the ball shaft sleeve 232 is limited in an axial vertical groove, so that a ball sliding connection is formed in the electromagnetic clutch 24 through the holes and the balls. At this time, the two first gears 21 have radial rotational freedom and axial movement freedom.

[0031] The armature of the electromagnetic clutch 24 is sleeved outside at least one coaxial connection structure 26 and forms a fixed connection, enabling the two second gears 22 to approach or move away from each other, thereby achieving simultaneous meshing or disengagement with the first gear 21 for both second gears 22.

[0032] It can be understood that the working principle of the electromagnetic clutch 24 is based on the control of the electromagnetic field to achieve mechanical connection or separation, including an electromagnetic coil, an armature, and a spring return mechanism; the armature is connected to at least one of the coaxial connection structures 26. When the electromagnetic coil is energized, a strong magnetic field is generated, attracting the armature to move towards the fixed yoke. The armature pushes the connected second gear 22 to move axially. Through the ball sliding connection (the cooperation between the ball and the hole position), the two second gears 22 approach each other, so that the two second gears 22 are simultaneously meshed with the first gear 21 to achieve power transmission; conversely, when the current is cut off, the magnetic field disappears, and the armature returns under the action of the spring return mechanism; the two second gears 22 move away from each other, disengaging from the first gear 21 and interrupting power transmission.

[0033] It can be understood that by forming a rolling pair with the ball bushing 232 and the coaxial connection structure 26, the switch of the electromagnetic clutch 24 can be integrated into other hidden places of the furniture cabinet, such as the side or the back, for switch operation.

[0034] In an alternative embodiment of the present application, a single movable plate B is provided on one side of a fixed plate A. Two hinge mechanisms 10 at different heights are provided on the fixed plate A to connect the single movable plate B, and the gear mechanism 20 is arranged on the fixed plate A and is respectively connected to the two hinge mechanisms 10; or In another embodiment of the present application, two movable plates B are provided on one side of a fixed plate A. Two hinge mechanisms 10 at different heights are provided on the fixed plate A, and each hinge mechanism 10 is separately connected to one movable plate B. The gear mechanism 20 is arranged on the fixed plate A and is respectively connected to the two hinge mechanisms 10.

[0035] It can be understood that on each side of each fixed plate A, one or two movable plates B can be provided. However, whether it is one or two movable plates B, two hinge mechanisms 10 are provided. Briefly speaking, if a single movable plate B is provided on one side of a fixed plate A, the two hinge mechanisms 10 are both connected to the same movable plate B, and the gear mechanism 20 is simultaneously connected to the two hinge mechanisms 10; conversely, if two movable plates B are provided on one side of a fixed plate A, that is, each hinge mechanism 10 is separately connected to one movable plate B, and the others are similar.

[0036] Correspondingly, when a single movable plate B is arranged on one side of a fixed plate A, the single movable plate B can rotate when the two second gears 22 are disengaged from the first gear 21; when the two second gears 22 are both engaged with the first gear 21, the single movable plate B is limited.

[0037] It can be understood that when a single movable plate B is arranged on one side of a fixed plate A, when the two second gears 22 are both disengaged from the first gear 21 and both double hinges have no gear constraints, the movable plate B can also rotate freely; but when the two second gears 22 are both bilaterally engaged with the first gear 21, the gear set forms a closed loop, forcing the double hinges to rotate synchronously. However, due to the rigid connection of the single movable plate B, the system is self-locked and the movable plate B cannot rotate.

[0038] Correspondingly, when the two second gears 22 are disengaged from the first gear 21, the two movable plates B can rotate completely independently. When the two second gears 22 are both engaged with the first gear 21, the two movable plates B can rotate in opposite directions and are limited when any one of the movable plates B reaches the limit position.

[0039] It can be understood that when the two second gears 22 are both disengaged, the two movable plates B are completely independent and have no linkage relationship, and can rotate independently; on the contrary, when the two second gears 22 are both engaged with the first gear 21, the first gear 21 acts as an intermediate gear, forcing the two second gears 22 to rotate in opposite directions, such as one clockwise and one counterclockwise. When any one of the movable plates B rotates to the limit position, such as when one of the movable plates B is parallel to the fixed plate A, the gear system is self-locked and the other movable plate B is also constrained.

[0040] In summary, through the combination of the gear engagement states, single-plate locking / floating or double-plate linkage / independent operation is realized. Without complex additional structures, hard limits are achieved by utilizing the statics characteristics of the gear train during engagement, with high reliability.

[0041] Furthermore, the crank connecting rod 12 includes a bent section 12a and a swing arm section 12b connected to the bent section 12a and the connection point is not located at the end of the bent section 12a. One end of the swing arm section 12b is hinged to the hinge seat 11, and the bent section 12a is connected to the movable plate B through a curved extension. The movable plate B can be turned from being parallel to the fixed plate A to being perpendicular to the fixed plate A; one end of the first intermediate rod 13 is hinged to the end of the bent section 12a away from the movable plate B, and the other end is rotatably connected to the limiting rod 14. Among them, the length of the first intermediate rod 13 is greater than that of the limiting rod 14.

[0042] The bent section 12a has a connecting rod portion with a curved or bent shape, which is used to achieve a larger-angle transmission during rotation and to form a better avoidance with the fixed plate A. The swing arm section 12b rigidly connects the bent section 12a and the hinge seat 11, and the connection point is located at a non-endpoint position of the bent section (as shown in the figure, mainly to provide avoidance and reduce torque). One end of the first intermediate rod 13 is hinged to the end of the bent section 12a (far from the movable plate B end), and the other end is rotatably connected to the limiting rod 14. The limiting rod 14 is shorter than the first intermediate rod 13 and is fixed to the fixed plate A or the hinge seat 11, which is used to limit the movement range, so that the entire connecting rod group moves within a small range and is also used to transmit torque to the gear mechanism 20.

[0043] Before opening, the movable plate B is in the initial state, that is, parallel to the fixed plate A, and the hinge point between the swing arm section 12b and the hinge seat 11 provides support. An external force pulls the movable plate B, driving the bent section 12a to rotate around the hinge point of the swing arm section 12b. The first intermediate rod 13 moves with the bent section 12a, pushing the limiting rod 14 to rotate until the two are close to a straight-line arrangement (dead point position), at which time the movable plate B reaches the limit position perpendicular to the fixed plate A. Due to the longer first intermediate rod 13, its lever effect can also enhance the limiting stability.

[0044] Furthermore, the hinge seat 11 is arranged at the boundary of the fixed plate A close to the movable plate B; the first hinge point of the hinge seat 11 is at a preset distance from the boundary line of the fixed plate A, and there is a height difference relative to the contact surface between the fixed plate A and the hinge seat 11; So that when the fixed plate A and the movable plate B are parallel, the end face boundaries of the fixed plate A and the movable plate B can be mutually attached; when the fixed plate A and the movable plate B are perpendicular, the end face boundary of the movable plate B is attached to the surface of the fixed plate A.

[0045] The hinge point maintains a preset distance from the boundary line of the fixed plate A, and this distance compensates for the plate thickness to avoid movement interference; there is a height difference between the hinge point and the mounting surface, enabling the movable plate B to cross the edge geometric obstacle of the fixed plate A during rotation, so that the end face boundary of the movable plate B is strictly aligned with the boundary of the fixed plate A; when the movable plate B rotates, its end face boundary slides along the surface of the fixed plate A and finally completely adheres. The preset distance of the hinge point ensures that the rotation radius matches the plate thickness to avoid collision or suspension.

[0046] It can be understood that thanks to the height difference and preset offset of the hinge point, there is no gap when the end face boundaries of the movable plate B and the fixed plate A are completely attached, eliminating visual abruptness and thus achieving a better hiding effect; when the movable plate B rotates to 90°, it is automatically locked by the dead point limit without additional buckles or external forces. At the same time, when the fixed plate A and the movable plate B are perpendicular, the end face boundary of the movable plate B is attached to the surface of the fixed plate A, and compared with the existing technology hinge, it can achieve a smaller movement trajectory and a 90° opening.

[0047] In summary, the hinge mechanism 10 and the gear mechanism 20 can be arranged on the hidden side inside the cabinet. The rotation of the crank connecting rod 12 around the hinge seat 11 can cause the movable plate B to fold relative to the fixed plate A, and it is also completely blocked by the side of the movable plate B facing away from the crank connecting rod 12. The adoption of the crank connecting rod 12 can achieve large-angle bending. After the crank connecting rod 12 rotates around the hinge seat 11, when the movable plate B is parallel to the fixed plate A, its boundary can be completely folded and attached to the fixed plate A (as shown in Figure 7 ), after folding, the overall thickness of the fixed plate A and the movable plate B is the same, and the appearance is exactly the same as that of the ordinary cabinet board. It can achieve no exposed locks and handles (no mechanical structure is exposed in the visible part), so that through natural occlusion, the effect of an "invisible safe" inside the cabinet can be achieved.

[0048] In one implementation, the hinge seat 11 includes a base 11a and two protruding and spaced convex blocks 11b arranged on the base 11a; wherein, each convex block 11b is inclined in the direction away from the movable plate B and its height gradually increases, and a hinge hole is provided at the end of the convex block 11b in the direction away from the movable plate B to form a first hinge point.

[0049] The base 11a is fixed to the base at the boundary of the fixed plate A to provide overall support. The double convex blocks are arranged at intervals: the two convex blocks 11b are parallel and spaced, forming a stable "double-ear type" hinge support. The convex blocks gradually increase in the direction away from the movable plate B (i.e., towards the inside of the fixed plate A) to form an inclined plane (such as a 45° inclination angle). A hinge hole is opened at the highest end of the convex block (the end far from the movable plate B) as the above-mentioned first hinge point. The hinge hole is lifted due to the increase of the convex block, so that the movable plate B can obtain a larger movement envelope space when rotating, avoiding interference with the edge of the fixed plate A and compensating for the plate thickness and the margin of the rotation trajectory.

[0050] It can be understood that the hinge shaft is close to the edge of the board. When the movable plate rotates, an additional avoidance space (at least 1 times the board thickness) is required, and the movement trajectory is a pure arc. The required space radius is greater than the board thickness of the fixed plate and the movement radius of the hinge; and through the inclined plane of the above convex block 11b, combined with the design of the crank connecting rod 12, the hinge axis is offset towards the inside of the fixed plate to form a "retreating type" rotation: effectively reducing the movement envelope, avoiding interference with the inside of the cabinet, and at the same time, a 90-degree opening can be achieved in a limited space.

[0051] The number of the crank connecting rods 12 is two and they are arranged at intervals. One side of the crank connecting rod 12 is attached to the convex block 11b, and the other side is attached to the first intermediate rod 13; that is, the two crank connecting rods 12 are installed in parallel at intervals, with the inner side attached to the inclined plane of the convex block 11b and the outer side connected to the first intermediate rod 13, effectively utilizing the space. An installation area T is reserved between the bending sections of the two crank connecting rods 12.

[0052] In an expandable solution of the present application, a foldable storage rack can be assembled within the installation area T. The foldable storage rack can adopt a bionic fan bone mechanism. For example, several pieces of walnut / bamboo slats are arranged in a fan bone-like manner. One end of the foldable storage rack is fixed to other cabinet surfaces or fixed plates. When the movable plate B is unfolded, the foldable storage rack unfolds into a fan shape to provide an additional storage area, which can be adaptively assembled according to the needs of users.

[0053] The hinge mechanism 10 further includes a fixed support plate 15, and the bent section is fixed to the movable plate B through the fixed support plate 15; a straightening strip c is also provided on each movable plate B close to the fixed plate A.

[0054] Since each movable plate B has only one connection fulcrum, the fixed support plate 15 can improve its connection strength. By arranging in a rectangular or other shape longitudinally, the bent section 12a is connected to the movable plate B to form a better rigid connection. The straightening strip c also compensates for the bending resistance characteristics of the movable plate B, such as a 304 stainless steel strip, and is connected by a bolt with adjustable pre-tightening force to further prevent the movable plate B from deforming.

[0055] The second aspect of the present application also provides a cabinet furniture (not shown in the figure), including the door panel assembly 100 as described above, the fixed plate A and the movable plate B as cabinet components; and a cabinet door connected to the cabinet.

[0056] It can be understood that both the fixed plate A and the movable plate B provided in the present application serve as the cabinet back panels, providing a hidden space inside the cabinet. The fixed plate A and the movable plate B are fixed to the cabinet frame as conventional back panels to maintain the appearance integrity. The movable plate B is flipped to form the effect of "a cabinet within a cabinet".

[0057] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A door panel assembly with a flip hinge, characterized in that: include: At least one fixed plate (A), and at least one movable plate (B) arranged on one side of the fixed plate (A); At least one hinge mechanism (10) is arranged on the same surface of the fixed plate (A) and the movable plate (B), comprising a hinge seat (11), and a crank connecting rod (12), a first intermediate rod (13) and a limit rod (14) connected in sequence, wherein the crank connecting rod (12) is connected to the movable plate (B), and the movable plate (B) can be folded relative to the fixed plate (A) by rotating the crank connecting rod (12) around the hinge seat (11), and the first intermediate rod (13) and the limit rod (14) are used to limit the rotation angle of the crank connecting rod (12); The gear mechanism (20) comprises a first gear (21) arranged in a first direction (H), and two second gears (22) arranged in a second direction (W) and spaced apart along the first direction (H); wherein each of the second gears (22) is connected to a limit rod (14), the first gear (21) is a bevel gear, and the two second gears (22) are arranged such that the relative distance between them is adjustable, so that at least one of the two second gears (22) can be meshed or disengaged with the first gear (21), thereby constraining or releasing the rotational freedom of the movable plate (B) when folding.

2. The door panel assembly with a flip hinge according to claim 1, characterized in that: The gear mechanism (20) further comprises: The ball shaft (23) comprises a first shaft (231) and a ball shaft sleeve (232) sleeved on the first shaft (231); An electromagnetic clutch (24) is sleeved on the ball bearing sleeve (232), one end of which is connected to one of the second gears (22) and the other end of which is connected to the other second gear (22); A bearing structure (25) connected to the first gear (21) to position the first gear (21); a coaxial connection structure (26) for connecting the second gear (22) and the ball sleeve to provide the second gear (22) with a degree of rotational freedom about the first axis, and the ball sleeve (232) can allow the second gear (22) to move radially; The two second gears (22) are simultaneously engaged or disengaged with the first gear (21) through an electromagnetic clutch (24).

3. The door panel assembly with a flip hinge according to claim 1, characterized in that: A single movable plate (B) is arranged on one side of a fixed plate (A), two hinge mechanisms (10) at different heights are arranged on the fixed plate (A) to connect the single movable plate (B), and the gear mechanism (20) is arranged on the fixed plate (A) and is respectively connected to the two hinge mechanisms (10); or Two movable plates (B) are arranged on one side of a fixed plate (A); two hinge mechanisms (10) at different heights are arranged on the fixed plate (A); each hinge mechanism (10) is individually connected to a movable plate (B); and the gear mechanism (20) is arranged on the fixed plate (A) and is respectively connected to the two hinge mechanisms (10).

4. The door panel assembly with a flip hinge according to claim 3, characterized in that: When a single movable plate (B) is provided on one side of a fixed plate (A), when the two second gears (22) and the first gear (21) are disengaged, the single movable plate (B) can rotate; when the two second gears (22) and the first gear (21) are engaged, the single movable plate (B) is limited; When two movable plates (B) are arranged on one side of a fixed plate (A), when the two second gears (22) are disengaged from the first gear (21), the two movable plates (B) can rotate independently; when the two second gears (22) are engaged with the first gear (21), the two movable plates (B) can rotate in opposite directions and are limited when any one of the movable plates (B) reaches an extreme position.

5. The door panel assembly with a flip hinge according to any one of claims 1 to 4, characterized in that: The crank connecting rod (12) comprises a bent section, and a swing arm section connected to the bent section and having a connection point not located at the end of the bent section, one end of the swing arm section is hinged to a hinge seat (11), the bent section is connected to a movable plate (B) by extending in a curved direction, and the movable plate (B) can be folded from being parallel to the fixed plate (A) to being perpendicular to the fixed plate (A); One end of the first intermediate rod (13) is hinged to the end of the curved section away from the movable plate (B), and the other end is rotatably connected to the limiting rod (14), wherein the first intermediate rod (13) is longer than the limiting rod (14).

6. The door panel assembly with a flip hinge according to claim 5, characterized in that: The hinge seat (11) is arranged at a boundary of the fixed plate (A) close to the movable plate (B); a first hinge point of the hinge seat (11) is at a preset distance from a boundary line of the fixed plate (A), and has a height difference relative to a contact surface between the fixed plate (A) and the hinge seat (11); So that when the fixed plate (A) and the movable plate (B) are parallel, the end surface boundary of the fixed plate (A) and the end surface boundary of the movable plate (B) can fit each other; when the fixed plate (A) and the movable plate (B) are perpendicular, the end surface boundary of the movable plate (B) fits the surface of the fixed plate (A).

7. The door panel assembly with a flip hinge according to claim 6, characterized in that: The hinge seat (11) comprises a base (11a), and two protruding blocks (11b) arranged on the base (11a) and relatively protruding and spaced apart. Each of the protrusions (11b) is arranged obliquely in a direction away from the movable plate (B) and its height gradually increases, and a hinge hole is arranged at the end of the protrusion (11b) in a direction away from the movable plate (B) to form the first hinge point.

8. The door panel assembly with a flip hinge according to claim 7, characterized in that: The crank connecting rods (12) are two in number and are arranged at intervals; one side of the crank connecting rod (12) is in contact with the protrusion (11b), and the other side is in contact with the first intermediate rod (13); a mounting area is reserved between the two crank connecting rods (12) between the curved sections; A foldable storage rack can be mounted in the installation area.

9. The door panel assembly with a flip hinge according to claim 5, characterized in that: The hinge mechanism (10) further comprises a fixed support plate (15), and the curved section is fixed to the movable plate (B) via the fixed support plate (15); Each movable plate (B) is also provided with a straightening strip (c) near the fixed plate (A).

10. A cabinet type furniture, characterized in that: include: The door panel assembly with a flip hinge according to any one of claims 1 to 9, wherein the fixed panel (A) and the movable panel (B) serve as cabinet components; The cabinet door is connected to the cabinet body.

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