Cup outer buffering hardware hinge

Abstract

The application relates to the technical field of hardware hinges, in particular to a cup-external buffering hardware hinge, which comprises a hinge cup and a hinge arm, and is characterized in that the hinge cup and the hinge arm are connected through upper connecting rods and lower connecting rods; the upper connecting rods and the lower connecting rods swing relative to the hinge joint points of the hinge arm and the hinge cup, so that the hinge is opened and closed; the upper connecting rod extends into the hinge cup and forms a driving arm; the driving end of the driving arm is away from the hinge joint point of the upper connecting rod and the hinge cup; when the hinge is opened and closed, the upper connecting rod drives the driving arm to swing; the outer side wall of the hinge cup is provided with a buffer; an air-avoiding groove is arranged through the side wall of the hinge cup; the hinge further comprises a driving rod which can move relative to the hinge cup; the inner end of the driving rod extends into the hinge cup from the air-avoiding groove and enters the swing stroke of the driving arm; the outer end of the driving rod is connected with the buffer; when the hinge is closed, the driving arm drives the buffer to move through the driving rod, so that the damping effect when the hinge is closed is generated.

Description

Technical Field

[0001] The invention relates to the technical field of hardware hinges, in particular to a cup-outer buffer hardware hinge. Background Art

[0002] Hinges are a common connector used for connecting and opening furniture, cabinets, doors, windows, and other items. As people's expectations for quality of life improve and they increasingly prioritize furniture safety and comfort, traditional hinges often cause door panels or covers to close rapidly due to inertia, resulting in noise and impact. This not only impacts the user experience but can also damage the door panel, hinge, and items inside.

[0003] In order to solve the above problems, hardware hinges with buffering functions, also known as damping hinges or hydraulic buffering hinges, have been developed in the prior art. This type of hinge integrates a damping mechanism, which enables the door panel to close slowly and silently in the final stage of closing. The core damping components of the buffering hinges currently on the market (such as hydraulic dampers, pneumatic dampers, etc.) are usually designed and installed inside the hinge arm or inside the hinge cup. Specifically, this type of hinge is usually provided with a damper inside the hinge arm (or hinge cup) and some linkage mechanisms for driving the damper to work. During the hinge closing process, the relative movement between the hinge arm and the hinge cup will drive the internal damper to compress through the connecting rod device or linkage components, thereby generating a buffering damping effect and realizing the slow closing of the door panel.

[0004] However, such hardware hinges with built-in buffer mechanisms in the prior art generally have some disadvantages and limitations:

[0005] First and foremost, to achieve the hinge's closing cushioning function, a damper and linkage mechanisms are installed within the hinge arm or cup, connected to a connecting rod. When the hinge closes, the linkage mechanism drives the damper to compress, generating closing damping. However, because the hinge arm (or cup) needs to accommodate the damper and related components, it must be relatively large, resulting in a bulky hinge arm or cup. Once installed, the bulky hinge detracts from its aesthetics and is inconsistent with the minimalist, lightweight, and concealed aesthetics sought in modern home design. Furthermore, the increased size can also take up more installation space, limiting its application in compact or space-constrained applications.

[0006] Secondly, integrating the damper and its complex linkage mechanism within the narrow hinge arm or hinge cup complicates the structural design of this type of buffer hinge and places extremely high demands on internal space utilization. This not only increases the difficulty of manufacturing and assembly, but also requires higher production precision and more complex process flows, leading to increased production costs and hindering large-scale production and cost control. Therefore, further improvements are necessary. Summary of the Invention

[0007] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide a cup-shaped external buffer hardware hinge with a simple structure, small size, neat and beautiful appearance.

[0008] The object of the present invention is achieved in the following manner: a cup-outer buffer hardware hinge, comprising a hinge cup and a hinge arm, wherein the hinge cup and the hinge arm are hingedly connected via an upper connecting rod and a lower connecting rod, wherein the upper connecting rod and the lower connecting rod swing relative to the hinge point between the hinge arm and the hinge cup to realize the opening and closing of the hinge, wherein the upper connecting rod extends into the hinge cup and forms a driving arm, wherein the driving end of the driving arm is away from the hinge point between the upper connecting rod and the hinge cup, and when the hinge is opened and closed, the upper connecting rod drives the driving arm to swing;

[0009] The outer side wall of the hinge cup is provided with a buffer, and a clearance groove is provided through the side wall of the hinge cup;

[0010] It also includes a driving rod that can move relative to the hinge cup. The inner end of the driving rod extends from the air avoidance groove into the hinge cup and enters the swing stroke of the driving arm; the outer end of the driving rod is connected to the buffer. When the hinge is closed, the driving arm pushes the buffer to move through the driving rod, thereby generating a damping effect when the hinge is closed.

[0011] Furthermore: a buffer shell is fixedly installed on the outer side wall of the hinge cup, a receiving cavity is provided in the buffer shell, and the buffer is installed in the receiving cavity.

[0012] Furthermore: the driving rod is installed in a sliding manner, a guide rail block is fixedly installed on the air avoidance groove, a guide groove is provided in the guide rail block, and the driving rod is slidably provided in the guide groove.

[0013] Furthermore: the guide groove is an arc groove, and correspondingly, the driving rod is provided with an arc-shaped guide portion, which slides in the guide groove.

[0014] Furthermore: a first pressing arc surface is provided on the inner side of the guide part and is connected to the driving arm, a second pressing arc surface is provided on the outer side of the guide part and is connected to the buffer, and an "Ω"-shaped cross-section is provided between the guide part and the first pressing arc surface and the second pressing arc surface.

[0015] Furthermore: a guide block is installed outside the cylinder body of the buffer, and the guide block moves synchronously with the cylinder body. Correspondingly, a locking buckle is provided on the hinge cup, and the locking buckle and the guide block hook limit the movement stroke of the cylinder body of the buffer toward the driving rod.

[0016] Furthermore: the buffer is a self-resetting compression damping type hydraulic buffer, the piston rod of the buffer is fixedly connected to the hinge cup, and the tail of the cylinder body is connected to the drive rod.

[0017] Furthermore: the buffer is a compression damping type hydraulic buffer, its piston rod is fixedly connected to the hinge cup, the cylinder body of the buffer is fixedly connected to the guide block, and the drive rod is connected to the guide block or the cylinder body; a return spring is arranged between the guide block and the hinge cup, and the return spring always pushes the guide block and the cylinder body in the direction of the drive rod.

[0018] Furthermore: a sliding groove is provided on the upper end surface of the hinge cup, and the locking buckle is provided with a driving handle slidably installed in the sliding groove. The locking buckle is provided with a movable hook, and correspondingly, a fixed hook is provided on the guide block.

[0019] Furthermore, the driving rod is hingedly installed, and the driving rod is hingedly installed in the air-avoiding groove through a hinge shaft. The driving rod is formed by bending a metal plate in one piece.

[0020] The beneficial effects of the present invention are: 1. Simple structure, low production cost and improved market competitiveness.

[0021] 2. This invention incorporates a buffer on the outer wall of the hinge cup, and transmits the drive arm's power to the buffer outside the hinge cup via a drive rod. This "outside-cup buffer" design eliminates the need for complex components and space within the visible surface of the hinge cup, significantly optimizing the overall hinge structure and making the hinge more compact, streamlined, and aesthetically pleasing.

[0022] 3. This invention uses a drive arm to directly drive the external buffer via a drive rod. This design creates a direct and efficient power transmission path. Throughout the entire process, the power transmission chain is short and the number of mechanical components is minimal. This avoids the energy loss and gap accumulation caused by the complex linkage mechanism in traditional internal buffer structures, and eliminates any jamming or blocking. This direct and efficient transmission method ensures smooth and stable operation of the hinge during the closing and buffering process, providing a better user experience.

[0023] 4. Externally locating the buffer eliminates the need for a complex buffer housing and sophisticated linkage mechanism within the hinge cup, simplifying the internal structural design of the hinge cup and hinge arm. This reduces the machining precision requirements for parts during manufacturing and simplifies the assembly process, thereby helping to reduce manufacturing costs and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is one of the assembly renderings of the first embodiment of the present invention.

[0025] Figure 2 This is the second assembly effect diagram of the first embodiment of the present invention.

[0026] Figure 3This is one of the structural exploded views of the first embodiment of the present invention.

[0027] Figure 4 This is the second structural exploded view of the first embodiment of the present invention.

[0028] Figure 5 This is a schematic diagram of the structure of the first embodiment of the present invention after the hinge arm, buffer shell and guide rail block are hidden.

[0029] Figure 6 This is a cross-sectional view of the structure of the first embodiment of the present invention.

[0030] Figure 7 This is a schematic structural diagram of the first embodiment of the present invention after the hinge cup, hinge arm, upper connecting rod and lower connecting rod are hidden.

[0031] Figure 8 This is the assembly effect diagram of the second embodiment of the present invention.

[0032] Figure 9 This is a schematic structural diagram of the second embodiment of the present invention after the hinge cup, hinge arm, upper connecting rod and lower connecting rod are hidden.

[0033] Figure 10 This is an exploded view of the buffer housing, guide rail block and drive rod structure in the second embodiment of the present invention.

[0034] Figure 11 This is a schematic structural diagram of the third embodiment of the present invention after the hinge cup, hinge arm, upper connecting rod and lower connecting rod are hidden.

[0035] Figure 12 This is an exploded view of the buffer housing, guide rail block and drive rod structure in the third embodiment of the present invention.

[0036] Explanation of the accompanying reference numerals: 1. Hinge cup; 11. Locking buckle; 12. Sliding groove; 13. Driving handle; 14. Movable hook; 2. Hinge arm; 21. Air-avoiding groove; 3. Upper connecting rod; 31. Driving arm; 4. Lower connecting rod; 5. Buffer; 51. Cylinder body; 52. Piston rod; 6. Driving rod; 61. Guide part; 62. First pressing arc surface; 63. Second pressing arc surface; 7. Buffer shell; 71. Cavity; 8. Guide rail block; 81. Guide groove; 9. Guide block; 91. Return spring; 92. Fixed hook. DETAILED DESCRIPTION

[0037] The present invention will be further described below in detail with reference to the accompanying drawings. A cup-outer buffer hardware hinge includes a hinge cup 1 and a hinge arm 2. The hinge cup 1 and the hinge arm 2 are hingedly connected by an upper connecting rod 3 and a lower connecting rod 4. The upper connecting rod 3 and the lower connecting rod 4 swing relative to the hinge point of the hinge arm 2 and the hinge cup 1 to open and close the hinge. The upper connecting rod 3 extends into the hinge cup 1 and forms a driving arm 31. The driving end of the driving arm 31 is away from the hinge point between the upper connecting rod 3 and the hinge cup 1. When the hinge is opened and closed, the upper connecting rod 3 drives the driving arm 31 to swing. The outer wall of the hinge cup 1 is provided with a buffer 5, and a clearance groove 21 is provided through the side wall of the hinge cup 1. The hinge cup 1 also includes a driving rod 6 that can move relative to the hinge cup 1. The inner end of the driving rod 6 extends from the clearance groove 21 into the hinge cup 1 and enters the swing stroke of the driving arm 31. The outer end of the driving rod 6 is connected to the buffer 5. When the hinge is closed, the driving arm 31 pushes the buffer 5 to move through the driving rod 6, generating a damping effect when the hinge is closed.

[0038] In this embodiment: The basic opening and closing function of the hinge of the present invention is achieved by the relative swinging of the hinge cup 1, the hinge arm 2, and the upper connecting rod 3 and the lower connecting rod 4 connected therebetween. During the hinge closing process, the upper connecting rod 3 swings accordingly, and the driving arm 31 formed by it extending into the hinge cup 1 also swings inside the hinge cup 1 accordingly. During its swinging stroke, the driving arm 31 will contact and push the inner end of the driving rod 6. Among them, the driving rod 6 is movable relative to the hinge cup 1, and its inner end is inside the hinge cup 1, and extends to the outside of the hinge cup 1 through the air avoidance groove 21 on the side wall of the hinge cup 1. The outer end of the driving rod 6 is connected to the buffer 5 provided on the outer wall of the hinge cup 1. When the driving arm 31 pushes the driving rod 6, the driving rod 6 will transmit its movement and force to the external buffer 5, causing the buffer 5 to work. The buffer 5 produces a damping effect when it is pushed to work, thereby realizing the buffering function when the hinge is closed.

[0039] Compared with traditional technology, the buffer 5 in this application is cleverly arranged on the outer wall of the hinge cup 1, rather than the traditional hinge arm or inside the hinge cup. This "outside cup buffer" design makes the visible surface inside the hinge cup 1 free of other complex components, the structure is more compact, and the overall appearance is neater and more beautiful, which meets the aesthetic needs of modern furniture design.

[0040] At the same time, the driving arm 31 directly transmits power to the external buffer 5 through the driving rod 6, avoiding the energy loss and jamming caused by the traditional complex linkage mechanism, and ensuring smooth and stable operation of the hinge.

[0041] In addition, there is no need to reserve a large amount of space or a complex installation structure for the buffer inside the hinge cup, which reduces the complexity of component design and manufacturing.

[0042] In one of the embodiments: the outer wall of the cup 1 is fixedly installed with a buffer shell 7, the buffer shell 7 is internally provided with a containing cavity 71, and the buffer 5 is installed in the containing cavity 71. Among them, the buffer 5 is not simply bare installed on the outer wall of the cup 1, but is contained and protected by a buffer shell 7 fixedly installed on the outer wall of the cup 1. The buffer shell 7 provides good physical protection and support for the buffer 5, so that the buffer 5 is integrated with the external structure of the cup 1, the integrity is stronger, and the appearance is more coordinated.

[0043] In one of the embodiments: the drive rod 6 is installed in a sliding manner, the avoidance slot 21 is fixedly installed with a guide rail block 8, the guide rail block 8 is internally provided with a guide slot 81, and the drive rod 6 is slidingly arranged in the guide slot 81.

[0044] In this embodiment: a guide rail block 8 is fixedly installed on the avoidance slot 21 of the side wall of the cup 1. The guide rail block 8 forms a guide slot 81 inside, and the drive rod 6 is precisely arranged in the guide slot 81 and slides along the slot. When the drive arm 31 pushes the inner end of the drive rod 6, the drive rod 6 slides along the direction of the guide slot 81, and transmits the force to the buffer 5.

[0045] In this embodiment: the sliding of the drive rod 6 is precisely guided by the guide rail block 8 and the guide slot 81, which ensures the stability and directionality of the movement of the drive rod 6, and avoids deviation or jamming. At the same time, sliding guidance can reduce unnecessary shaking and energy loss, and improve the efficiency of power transmission.

[0046] In one of the embodiments: the guide slot 81 is a circular arc slot, and correspondingly, the drive rod 6 is provided with a circular arc-shaped guide portion 61, which is located in the guide slot 81 and slides.

[0047] Among them, since the drive arm 31 swings with the upper connecting rod 3, the trajectory of the driving end of the drive arm 31 contacting the drive rod 6 is circular arc-shaped. By designing the guide slot 81 to be circular arc-shaped and making the corresponding guide portion 61 on the drive rod 6 also circular arc-shaped, the sliding trajectory of the drive rod 6 can better match the swinging trajectory of the drive arm 31, reducing movement interference and friction.

[0048] In one of the embodiments: the inside of the guide portion 61 is provided with a first pressing arc surface 62 connected with the drive arm 31, and the outside of the guide portion 61 is provided with a second pressing arc surface 63 connected with the buffer 5, and the guide portion 61 and the first pressing arc surface 62 and the second pressing arc surface 63 are arranged in an "Ω" shape cross section. The unique "Ω" shape cross section design makes the center of the guide portion 61 coincide with the center of the guide slot, so that the guide portion can rotate with the center of the guide slot, realizing the lever action.

[0049] At the same time, the special cambered surface design ensures stable and efficient contact and force transmission between the driving arm 31 and the driving rod 6, as well as between the driving rod 6 and the buffer 5, reducing force loss and stress concentration, and ensuring its stability under long-term stress.

[0050] In one embodiment, a guide block 9 is installed outside the cylinder body 51 of the buffer 5, and the guide block 9 moves synchronously with the cylinder body 51. Correspondingly, a locking buckle 11 is provided on the hinge cup 1, and the locking buckle 11 is hooked with the guide block 9 to limit the movement of the cylinder body 51 of the buffer toward the driving rod 6.

[0051] In this embodiment, when the locking buckle 11 engages with the guide block 9, it physically limits the travel of the buffer cylinder, thereby securing the buffer cylinder or limiting its maximum extension. The locking buckle can be configured as a multi-step structure. By engaging with different steps, the timing of contact between the drive arm and the cylinder is controlled, thereby controlling the angle at which the buffer engages when the hinge closes. The appropriate engagement timing can be selected to accommodate cabinet doors of varying weights.

[0052] Of course, under some conditions, when the user does not need to use the buffering function, the locking buckle 11 and the guide block 9 can be used to lock the buffer to a fully compressed state, so that the hinge loses its buffering effect to meet usage requirements.

[0053] In one embodiment, the buffer 5 is a self-resetting compression damping hydraulic buffer. Its piston rod 52 is fixedly connected to the hinge cup 1, and the rear end of the cylinder 51 is connected to the drive rod 6. In this self-resetting compression damping hydraulic buffer, when the thrust is removed, an internal reset mechanism, such as gas or a spring, resets the cylinder 51. This eliminates the need for an external reset spring, simplifies the overall structure, and reduces the number of components.

[0054] In one embodiment: the buffer 5 is a compression damping type hydraulic buffer, its piston rod 52 is fixedly connected to the hinge cup 1, the cylinder 51 of the buffer 5 is fixedly connected to the guide block 9, and the drive rod 6 is connected to the guide block 9 or the cylinder 51; a return spring 91 is provided between the guide block 9 and the hinge cup 1, and the return spring 91 always pushes the guide block 9 and the cylinder 51 in the direction of the drive rod 6.

[0055] In this embodiment, to ensure smoother return of the buffer and guide block, a return spring 91 is provided between the guide block 9 and the hinge cup 1. The return spring 91 continuously applies a thrust toward the drive rod 6, thereby pushing the guide block 9 and the cylinder 51 back, keeping the buffer in its initial state, ready for compression.

[0056] In this embodiment, the reset force of the buffer can be adjusted by selecting reset springs with different spring stiffnesses to adapt to door panels of different weights or user habits.

[0057] In one embodiment: the upper end surface of the hinge cup 1 is provided with a sliding groove 12, the locking buckle 11 is provided with a driving handle 13 slidably installed in the sliding groove 12, the locking buckle 11 is provided with a movable hook 14, and correspondingly, the guide block 9 is provided with a fixed hook 92.

[0058] In this embodiment, the locking buckle 11 is slidably mounted within a sliding groove 12 on the upper end surface of the hinge cup 1 via a driving handle 13. When the user slides the locking buckle 11 using the driving handle 13, the movable hook 14 on the locking buckle 11 engages or disengages with the fixed hook 92 on the guide block 9. When the movable hook 14 engages with the fixed hook 92, the guide block 9 and the buffer cylinder are locked in a specific position, restricting their movement. The combination of the driving handle 13 and the sliding groove 12 provides the user with a simple and intuitive manual operation interface for controlling the locking function.

[0059] In one embodiment, the driving rod 6 is hingedly installed. The driving rod 6 is hingedly installed in the air-avoiding groove 21 through a hinge shaft. The driving rod 6 is formed by bending a metal plate in one piece.

[0060] In this embodiment, the drive rod 6 is hingedly mounted within a clearance groove 21 in the side wall of the hinge cup 1 via a hinge axis. This allows the drive rod 6 to swing about a fixed axis rather than sliding. When the drive arm 31 pushes the inner end of the drive rod 6, it swings about the hinge axis, driving its outer end to push against the buffer 5, thus achieving its buffering function.

[0061] To sum up: The core innovation of the cup-outer buffer hardware hinge proposed by the present invention lies in the clever arrangement of the buffer 5, the core component of the buffer function, on the outer side wall of the hinge cup 1, and the design of a set of efficient and precise power transmission mechanisms, which completely revolutionizes the internal integration mode of the traditional buffer hinge, thereby achieving multiple advantages of beautiful appearance, stable operation and easy maintenance.

[0062] Specifically: During the hinge closing process, the internal driving arm 31 driven by the upper connecting rod 3 directly transmits the mechanical energy generated by the swing to the buffer 5 arranged outside the hinge cup 1 through the driving rod 6 that shuttles inside and outside the hinge cup 1 and can move relative to each other, thereby generating a damping effect and achieving smooth and silent buffered closing.

[0063] Wherein, the basic opening and closing function of the hinge is completed by the hinge cup 1 and the hinge arm 2 through the hinge and relative swing of the upper connecting rod 3 and the lower connecting rod 4. During the movement of the hinge from the opening state to the closing state, the upper connecting rod 3, as one of the main transmission components, will swing accurately. This movement of the upper connecting rod 3 is ingeniously extended to the inside of the hinge cup 1, forming a driving arm 31. Therefore, when the hinge is closed, the driving arm 31 will swing with a trajectory in the visible internal space of the hinge cup 1. The "driving end" of the driving arm 31 is designed to be away from the hinge joint of the hinge cup 1, so as to form an effective force arm and ensure that it can exert sufficient pushing force on the driving rod 6.

[0064] Wherein, an empty slot 21 is provided on the side wall of the hinge cup 1, and the inner end of the driving rod 6 extends into the inside of the hinge cup 1 from the empty slot 21, accurately within the swing stroke of the driving arm 31. When the driving arm 31 swings to a certain position, its driving end will contact and push the inner end of the driving rod 6.

[0065] Wherein, the driving rod 6 is designed to be movable relative to the hinge cup 1. There are two main ways to realize this relative movement:

[0066] A: sliding installation: a guide block 8 is fixedly installed on the empty slot 21, and a guide groove 81 is provided in the inside of the guide block 8. The driving rod 6 is slidingly arranged in the guide groove 81. In order to maximize the movement matching degree, the guide groove 81 is often designed as a circular arc groove, and correspondingly, a circular arc-shaped guide part 61 is also provided on the driving rod 6, so that it can smoothly slide along a circular arc path highly consistent with the swing trajectory of the driving arm 31. This design ensures efficient and non-stuck power transmission between the driving arm 31 and the driving rod 6. In addition, the "Ω" shaped cross-section design of the guide part 61 further refines the contact surface of force transmission. The first pressing arc surface 62 on the inside accurately receives the pushing force of the driving arm 31, while the second pressing arc surface 63 on the outside stably transmits the force to the buffer 5, further improving the transmission efficiency and stability. At the same time, since the contact point between the driving arm and the driving rod changes with the angle of opening and closing of the hinge, the smaller the closing angle of the hinge, the closer the contact point between the driving arm and the driving rod to the center point of the driving rod, so that the resistance arm becomes shorter. When the damping degree of the damper is constant, the resistance arm becomes shorter, the power arm increases, thereby increasing the damping of the driving arm, to balance the acceleration of the cabinet door when closing, and finally make the cabinet door close more stably.

[0067] B: Articulated Installation: Another option is to hinge the drive rod 6 within the clearance groove 21 via a hinge. In this case, the drive rod 6 no longer slides, but rather swings slightly about the hinge. When the drive arm 31 pushes the drive rod 6, it swings about the hinge, driving its outer end to push the buffer 5. This solution is relatively simple in structure and is typically manufactured by integrally bending a metal sheet, offering excellent cost-effectiveness and structural strength.

[0068] The outer end of the drive rod 6 extends to the outside of the hinge cup 1 and is tightly connected to the buffer 5 provided on the outer wall of the hinge cup 1. The buffer 5 is usually installed in a buffer shell 7 fixed to the outer wall of the hinge cup 1. The buffer shell 7 has an accommodating cavity 71, which provides protection for the buffer and a stable mounting base.

[0069] When the hinge closes, the driving arm 31 pushes the driving rod 6, which applies this thrust directly to the buffer 5, displacing the piston or cylinder within it. The damping medium within the buffer 5, such as hydraulic oil, creates flow resistance through internal valves when compressed, resulting in a precisely controllable damping effect, effectively slowing the hinge's closing speed and preventing impact and noise.

[0070] There are several options for the reset mechanism of buffer 5:

[0071] Self-resetting type: Figures 1-10 As shown, a self-resetting compression damping hydraulic buffer is used. This type of buffer has an internal reset mechanism, such as a built-in spring or high-pressure gas, which automatically returns to its initial extended state when the external thrust is released, resulting in a more compact structure. In this case, the piston rod 52 of the buffer 5 is typically fixedly connected to the hinge cup 1, while the drive rod 6 is connected to the rear end of the buffer cylinder.

[0072] External spring return type: Figures 11-12 As shown, a conventional compression damping hydraulic buffer is used, which does not have a built-in reset function. To achieve reset, an additional reset spring 91 is provided. This spring is usually arranged between the guide block 9 and the hinge cup 1, which move synchronously with the buffer cylinder. It continuously pushes the buffer cylinder and guide block 9 toward the drive rod 6, ensuring that they can quickly return to the initial working position after the buffering ends.

[0073] It is important to note that in order to enhance functionality and safety, the present invention also provides an optional stroke control or locking mechanism. A guide block 9 is installed on the outside of the cylinder 51 of the buffer 5, and the guide block 9 moves synchronously with the cylinder 51. A locking buckle 11 is provided on the hinge cup 1. When the locking buckle 11 is hooked with the fixed hook 92 on the guide block 9, the stroke of the buffer cylinder moving in the direction of the drive rod 6 can be limited, thereby playing a locking or limiting role. The operation of the locking buckle 11 is achieved by a driving handle 13 provided thereon, and the handle is slidably installed in a sliding groove 12 provided on the upper end surface of the hinge cup 1, and a movable hook 14 is also provided on the locking buckle 11 to facilitate engagement and separation with the fixed hook 92, thereby realizing convenient manual operation by the user.

[0074] In summary, this invention creates a novel buffer hinge system that is efficient, aesthetically pleasing, stable, and easy to maintain by externalizing the buffer, optimizing the power transmission path, and providing a variety of movement and reset modes. The key to its operating principle lies in a precisely designed linkage mechanism that directly and efficiently converts the mechanical energy of the hinge's opening and closing into the work of the external buffer. This ensures excellent buffering performance while addressing the drawbacks of existing technologies, such as bulk and poor appearance, significantly improving the product's overall performance and user experience.

[0075] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0076] The basic principles, main features and advantages of the present invention are shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A cup-outer buffer hardware hinge, comprising a hinge cup (1) and a hinge arm (2), wherein the hinge cup (1) and the hinge arm (2) are hinged via an upper connecting rod (3) and a lower connecting rod (4), wherein the upper connecting rod (3) and the lower connecting rod (4) swing relative to the hinge point of the hinge arm (2) and the hinge cup (1) to realize the opening and closing of the hinge, and wherein the hinge cup (1) and the hinge arm (2) are hinged via an upper connecting rod (3) and a lower connecting rod (4), wherein the upper connecting rod (3) and the lower connecting rod (4) swing relative to the hinge point of the hinge arm (2) and the hinge cup (1), and the hinge cup (1) are hinged via an upper connecting rod (3) and a lower connecting rod (4), and the hinge cup (1) is ... The upper connecting rod (3) extends into the hinge cup (1) and forms a driving arm (31), the driving end of the driving arm (31) is away from the hinge point between the upper connecting rod (3) and the hinge cup (1), and when the hinge is opened or closed, the upper connecting rod (3) drives the driving arm (31) to swing; A buffer (5) is provided on the outer side wall of the hinge cup (1), and a clearance groove (21) is provided through the side wall of the hinge cup (1); It also includes a driving rod (6) that can move relative to the hinge cup (1), the inner end of the driving rod (6) extending from the air-avoiding groove (21) into the hinge cup (1) and entering the swing stroke of the driving arm (31); the outer end of the driving rod (6) is connected to the buffer (5), and when the hinge is closed, the driving arm (31) pushes the buffer (5) to move through the driving rod (6), thereby generating a damping effect when the hinge is closed; A buffer shell (7) is fixedly mounted on the outer side wall of the hinge cup (1), a receiving cavity (71) is provided in the buffer shell (7), and the buffer (5) is mounted in the receiving cavity (71); The driving rod (6) is installed in a sliding manner, a guide rail block (8) is fixedly installed on the air-avoiding groove (21), a guide groove (81) is provided in the guide rail block (8), and the driving rod (6) is slidably provided in the guide groove (81); The guide groove (81) is a circular arc groove. Correspondingly, the driving rod (6) is provided with a circular arc-shaped guide portion (61), and the guide portion (61) is located in the guide groove (81) and slides.

2. The cup-shaped buffer hardware hinge according to claim 1, characterized in that: The inner side of the guide portion (61) is provided with a first pressing arc surface (62) connected to the driving arm (31), and the outer side of the guide portion (61) is provided with a second pressing arc surface (63) connected to the buffer (5), and the guide portion (61) and the first pressing arc surface (62) and the second pressing arc surface (63) are provided with an "Ω"-shaped cross-section.

3. The cup-outer cushioning hardware hinge according to claim 1, characterized in that: A guide block (9) is further installed outside the cylinder body (51) of the buffer (5), and the guide block (9) moves synchronously with the cylinder body (51). Correspondingly, a locking buckle (11) is provided on the hinge cup (1), and the locking buckle (11) is hooked with the guide block (9) to limit the stroke of the cylinder body (51) of the buffer moving in the direction of the drive rod (6).

4. The cup-outer cushioning hardware hinge according to claim 3, characterized in that: The buffer (5) is a self-resetting compression damping type hydraulic buffer, the piston rod (52) of the buffer (5) is fixedly connected to the hinge cup (1), and the tail of the cylinder (51) is connected to the driving rod (6).

5. The cup-outer cushioning hardware hinge according to claim 3, characterized in that: The buffer (5) is a compression damping type hydraulic buffer, wherein the piston rod (52) is fixedly connected to the hinge cup (1), the cylinder body (51) of the buffer (5) is fixedly connected to the guide block (9), and the drive rod (6) is connected to the guide block (9) or the cylinder body (51); a return spring (91) is provided between the guide block (9) and the hinge cup (1), and the return spring (91) always pushes the guide block (9) and the cylinder body (51) toward the drive rod (6).

6. The cup-outer cushioning hardware hinge according to claim 3, characterized in that: The upper end surface of the hinge cup (1) is provided with a sliding groove (12), the locking buckle (11) is provided with a driving handle (13) and is slidably installed in the sliding groove (12), the locking buckle (11) is provided with a movable hook (14), and correspondingly, the guide block (9) is provided with a fixed hook (92).

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