Gear linkage hardware buffer hinge

Abstract

A gear-driven metal buffer hinge includes a hinge cup and a hinge arm. The hinge cup and the hinge arm are hinged together by a first link and a second link. The hinge cup and the hinge arm rotate relative to the first link and the second link to open and close the hinge. A drive gear is provided at the front end of the first link, and the drive gear rotates around the hinge point between the first link and the hinge cup. A linkage plate is slidably mounted on the inner bottom of the hinge cup, and a damper is provided between the linkage plate and the hinge cup. A rack is provided on the linkage plate to mesh with the drive gear. The beneficial effect of this utility model is that by setting the meshing structure of the drive gear and the rack, the opening and closing motion of the hinge is directly converted into driving the linkage plate. When the hinge is open, the meshing of the drive gear and the rack can actively and effectively drive the linkage plate forward, achieving forced reset, and completely solving the problem of insufficient or failed reset of the linkage plate in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of hardware hinge technology, specifically a gear-linked hardware buffer hinge. Background Technology

[0002] Hydraulic damping hinges, as a common connecting component, are widely used in furniture, home appliances, industrial equipment, and other fields. Their main function is to enable smooth opening and closing of doors, providing a cushioning and shock absorption effect to avoid collisions and noise, thereby improving user experience and extending equipment lifespan.

[0003] Traditional hydraulic damping hinges typically include a hinge cup, hinge arm, connecting rod, and a damping mechanism housed within the hinge cup. In existing technology, the most common damping mechanism is a hydraulic damper. When the hinge closes, the connecting rod system drives the damper in a compressive motion, generating damping force through hydraulic action, thus achieving a smooth, damped closing effect. When the hinge opens or needs to reset, the damper typically relies on its own elastic element (such as an internal spring) or the self-resetting force generated by the internal hydraulic structure to push the relevant components back to their initial position, ensuring the hinge can open and close normally.

[0004] However, existing hydraulic damping hinges have some significant drawbacks in practical applications, particularly regarding the reliability of the linkage plate's reset. Specifically, in existing technologies, the reset of the linkage plate often relies excessively on the damper's own self-resetting force. This self-resetting force is typically relatively small, and its magnitude is limited by various factors such as the strength of the damper's internal spring, the viscosity of the hydraulic oil, the friction of the seals, and manufacturing precision.

[0005] This relatively small self-resetting force directly results in insufficient force on the linkage plate during reset, thus affecting the hinge's ability to fully open or reset promptly, significantly reducing its reliability. In certain specific situations, because the damper's self-resetting force is insufficient to overcome the friction or external resistance of the linkage plate during sliding, the linkage plate may even fail to reset, causing the hinge to malfunction. For example, the cabinet door may not remain fully open after opening, or the linkage plate may jam when reset is required, leading to unstable or ineffective buffering upon subsequent closing.

[0006] More seriously, during long-term use, wear inside the damper, aging and deterioration of the hydraulic oil, and decline in the performance of the seals will further weaken its self-resetting ability. This increases the risk of the linkage plate failing to reset, significantly shortening the effective service life of the hinge and affecting the overall product quality and user satisfaction. Therefore, the existing hydraulic buffer hinge technology has significant shortcomings in the linkage plate reset mechanism, and further improvements are necessary to enhance its reset reliability, stability, and service life. Utility Model Content

[0007] The purpose of this utility model is to overcome the shortcomings of existing technologies and provide a gear linkage hardware buffer hinge that is simple in structure, easy to use, and can effectively enhance the reset capability of the linkage plate, thereby improving the overall reliability of the hydraulic buffer hinge.

[0008] The purpose of this utility model is achieved through the following means: a gear-linked hardware buffer hinge, which includes a hinge cup and a hinge arm. The hinge cup and the hinge arm are hinged together by a first link and a second link. The hinge cup and the hinge arm rotate relative to the first link and the second link to realize the opening and closing of the hinge. The front end of the first link is provided with a drive gear, and the drive gear rotates around the hinge point between the first link and the hinge cup.

[0009] The hinge cup has a linkage plate slidably installed on its inner bottom, and a damper is provided between the linkage plate and the hinge cup.

[0010] The linkage plate is equipped with a rack that meshes with the drive gear.

[0011] Furthermore: the driving gear is mounted on a gear seat, which has a mounting hole. The gear seat is coaxially connected to the hinge hole on the first connecting rod through the mounting hole, thereby fixing it to the first connecting rod.

[0012] Furthermore, the linkage plate has an installation groove extending through its upper and lower end faces, and the rack is embedded in the installation groove.

[0013] Furthermore, the linkage plate is provided with a damping plate for connecting to the damper.

[0014] Furthermore, a pressure plate is also installed inside the hinge cup, and a space is left between the pressure plate and the inner bottom of the hinge cup to form an accommodating area, in which the linkage plate slides.

[0015] Furthermore, the bottom of the pressure plate is provided with a guide groove, and the linkage plate is slidably installed in the guide groove.

[0016] Furthermore, the damper is a compression-damped self-resetting hydraulic cylinder.

[0017] The beneficial effects of this utility model are: 1. Simple structure, low production cost, and improved market competitiveness.

[0018] 2. This invention, by setting up a meshing structure between a drive gear and a rack, directly converts the opening and closing motion of the hinge into driving the linkage plate. When the hinge opens, the meshing of the drive gear and rack actively and effectively drives the linkage plate forward, achieving forced reset. This mechanical linkage method provides a reset force far greater than that relying solely on the self-resetting force of the damper. Even when the damper's performance deteriorates due to long-term use, it can still ensure reliable reset of the linkage plate, completely solving the problem of insufficient or failed reset of the linkage plate in existing technologies.

[0019] 3. Because the movement trajectory and driving force of the linkage plate are precisely controlled through the meshing of gears and racks, the compression and release process of the damper is more stable and controllable. Regardless of the opening and closing speed of the hinge, the precise engagement of the gears and racks ensures that the linkage plate drives the damper to work at the preset stroke and speed, thereby providing a consistent and reliable buffering effect and avoiding the unstable buffering effect caused by untimely reset in the prior art.

[0020] 4. In this invention, the reset of the linkage plate is mainly driven by a gear and rack, which greatly reduces the workload of the damper's self-resetting mechanism. This not only reduces the wear rate of the internal components of the damper and slows down the aging of the hydraulic oil, but also significantly extends the service life of the damper and the entire hinge system, reducing maintenance costs.

[0021] 5. This utility model ingeniously integrates a gear and rack transmission mechanism within the hinge structure, particularly utilizing the rotation of the first connecting rod and the limited space within the hinge cup to achieve buffering and resetting functions. This design keeps the entire hinge structure compact, without adding extra external volume, making it easy to install and apply in various furniture and equipment.

[0022] 6. By designing and adjusting the parameters of the gears and racks (such as the gear ratio and module), the travel and speed of the linkage plate can be flexibly changed, thereby achieving control over different compression ratios and working states of the buffer damper. This allows this invention to better adapt to the buffering requirements of different application scenarios and load demands. Attached Figure Description

[0023] Figure 1 This is a diagram showing the hinge in the closed state in this utility model.

[0024] Figure 2 This is a rendering of the hinge in the open state in this utility model.

[0025] Figure 3 This is a cross-sectional view of the structure of this utility model.

[0026] Figure 4 , 5 This is an exploded view of the structure of this utility model.

[0027] Figure 6 This is a diagram showing the meshing state of the drive gear and rack in this utility model.

[0028] Figure 7 This is an exploded view of the drive gear and rack structure in this utility model. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings. A gear-linked hardware buffer hinge includes a hinge cup 1 and a hinge arm 2. The hinge cup 1 and the hinge arm 2 are hinged together by a first connecting rod 3 and a second connecting rod 4. The hinge cup 1 and the hinge arm 2 rotate relative to the first connecting rod 3 and the second connecting rod 4 to realize the opening and closing of the hinge. A drive gear 5 is provided at the front end of the first connecting rod 3. The drive gear 5 rotates around the hinge point between the first connecting rod 3 and the hinge cup 1. A linkage plate 7 is slidably installed on the inner bottom of the hinge cup 1. A damper 8 is provided between the linkage plate 7 and the hinge cup 1. A rack 6 is provided on the linkage plate 7 to mesh with the drive gear 5. When the hinge is closed, the drive gear 5 rotates, thereby driving the rack 6 to move linearly and causing the linkage plate 7 to move backward to compress the damper 8 and generate a closing buffer force. When the hinge is open, the drive gear 5 meshes with the rack 6, driving the linkage plate 7 to move forward to realize the reset.

[0030] In this embodiment, when the hinge moves from the open state to the closed state, the relative rotation between the hinge cup 1 and the hinge arm 2, through the linkage of the first link 3 and the second link 4, causes the first link 3, which is hinged to the hinge cup 1, to rotate. Since the drive gear 5 is located at the front end of the first link 3 and rotates around the hinge point between the first link 3 and the hinge cup 1, the rotation of the first link 3 directly drives the drive gear 5 to rotate. The drive gear 5 is meshed with the rack 6 on the linkage plate 7, and its rotational motion precisely drives the rack 6 to produce linear motion, thereby causing the linkage plate 7 to slide in a preset direction. The sliding of the linkage plate 7 directly compresses the damper 8 located between the hinge cup 1 and the linkage plate 7. When the damper 8 is compressed, it generates a damping force, thereby providing a smooth buffer for the closing movement of the hinge and avoiding the impact and noise generated when the door panel closes quickly.

[0031] When the hinge moves from the closed state to the open state, the relative movement between the hinge cup 1 and the hinge arm 2 is also transmitted to the first link 3 through the linkage system. The rotation of the first link 3 will drive the drive gear 5 to rotate in the opposite direction. Since the drive gear 5 and the rack 6 are always meshed, its reverse rotation will actively drive the rack 6 and the linkage plate 7 to move forward, so that the linkage plate 7 returns to its initial position, and at the same time releases the compression on the damper 8, realizing the reset of the damper 8.

[0032] This embodiment fundamentally solves the problem of insufficient reset force of the linkage plate in the prior art by introducing a meshing mechanism between the driving gear 5 and the rack 6. In the prior art, the reset of the linkage plate often relies excessively on the elastic self-reset force of the damper itself. This force is usually weak and easily affected by various factors, leading to untimely or failed reset. However, this utility model utilizes the hinge's own opening and closing motion, through the active mechanical linkage of the gear and rack, to provide a strong and reliable driving force for the linkage plate 7. Whether compressing the damper to generate buffering force or actively driving the linkage plate to reset, it ensures the accuracy and reliability of its movement, significantly improving the overall stability and service life of the hinge.

[0033] In one embodiment: the driving gear 5 is disposed on the gear seat 51, the gear seat 51 is provided with a mounting hole 52, and the gear seat 51 is coaxially connected to the hinge hole 31 on the first connecting rod 3 through the mounting hole 52, thereby fixing it on the first connecting rod 3.

[0034] In this embodiment, the drive gear 5 is not directly mounted on the first connecting rod 3, but is instead mounted on a separate gear seat 51. The mounting hole 52 on this gear seat 51 allows for coaxial connection with the hinge hole 31 on the first connecting rod 3. This ensures that the rotation axis of the drive gear 5 coincides with or is parallel to the axis of the first connecting rod 3, guaranteeing that the rotation of the first connecting rod 3 can be stably and accurately transmitted to the drive gear 5, thereby driving the rack 6. This mounting method ensures that the movement of the drive gear 5 is highly synchronized with the movement of the first connecting rod 3, guaranteeing the stability of the gear-rack meshing transmission.

[0035] In one embodiment: the linkage plate 7 has a mounting groove 71 extending through its upper and lower end faces, and the rack 6 is embedded in the mounting groove 71.

[0036] In this embodiment, the rack 6 is not simply pasted or fixed to the surface of the linkage plate 7, but is embedded in the mounting groove 71 that runs through the upper and lower end faces of the linkage plate 7. This embedding method makes the rack 6 and the linkage plate 7 form a more stable whole. When the drive gear 5 meshes with the rack 6 and drives its linear motion, the mounting groove 71 constrains the rack 6, preventing the rack 6 from shifting, warping, or falling off under force, thus ensuring the stability of the gear-rack meshing and the reliability of the transmission.

[0037] This embedded structure significantly improves the stability of the connection between the rack 6 and the linkage plate 7, as well as the reliability of the transmission. It can effectively withstand the thrust and pull generated during gear meshing, reducing the deformation or loosening of the rack due to long-term stress. In addition, embedding the rack inside the linkage plate also contributes to the compactness of the structure, preventing the rack from protruding from the surface of the linkage plate, reducing interference with other components, and may also prevent dust or debris from entering the meshing area to some extent.

[0038] In one embodiment: the linkage plate 7 is provided with a damping plate 73 for connection with the damper 8.

[0039] In this embodiment, the linkage plate 7 does not directly contact the damper 8 body, but a damping plate 73 is provided on it. This damping plate 73 serves as an intermediate connector for connecting or engaging with the damper 8. When the linkage plate 7 moves linearly under the drive of the gear-rack system, the damping plate 73 precisely transmits this motion to the damper 8, thereby compressing or releasing the damper 8.

[0040] In one embodiment: a pressure plate 9 is also installed inside the hinge cup 1, and a space is left between the pressure plate 9 and the inner bottom of the hinge cup 1 to form a receiving area 91, and the linkage plate 7 slides within the receiving area 91.

[0041] In this embodiment, the pressure plate 9 and the inner bottom of the hinge cup 1 are not completely fitted together, but rather a space is cleverly left, forming a receiving area 91. The linkage plate 7 slides linearly within this receiving area 91. This design provides a dedicated channel and limited space for the movement of the linkage plate 7, ensuring its smooth, linear reciprocating motion inside the hinge cup. It effectively prevents the linkage plate 7 from deviating, shaking, or jamming during movement, ensuring the accuracy and stability of the gear-rack meshing.

[0042] In one embodiment, the pressure plate 9 has a guide groove 92 at its bottom, and the linkage plate 7 is slidably installed within this guide groove 92. The bottom of the pressure plate 9 is not a smooth plane, but rather has a specially designed guide groove 92. The linkage plate 7 is slidably installed within this guide groove 92 through its cooperation with it. When the linkage plate 7 moves under the drive of a gear and rack, the guide groove 92 provides precise lateral constraint and guidance, ensuring that the linkage plate 7 moves smoothly along a straight path.

[0043] In one embodiment, the damper 8 is a compression-damped self-resetting hydraulic cylinder.

[0044] Compared with traditional technology, the core working principle of the gear-linked hardware buffer hinge in this utility model is to cleverly link the opening and closing motion of the hinge with the reciprocating motion of the buffer damping mechanism through the mechanical meshing of gears and racks, thereby realizing the active driving and reliable reset of the buffer motion.

[0045] Specifically: When the hinge is closed, the relative rotation of the hinge cup 1 and the hinge arm 2, through the linkage of the first link 3 and the second link 4, causes the first link 3, which is hinged to the hinge cup 1, to drive the drive gear 5 at its front end to rotate. The drive gear 5 is engaged with the rack 6, which is slidably mounted on the linkage plate 7 inside the hinge cup 1. The rotation of the drive gear 5 precisely drives the rack 6 and the linkage plate 7 to move in a straight line, compressing the damper 8 located between the linkage plate 7 and the hinge cup 1. The damper 8 generates a damping force when compressed, thus providing a smooth buffering effect for the closing movement of the hinge, avoiding impact and noise on the door panel.

[0046] Specifically: when the hinge opens, the linkage system rotates in the opposite direction, and the driving gear 5 also rotates in the opposite direction. At this time, the continuous meshing of the driving gear 5 and the rack 6 will actively drive the linkage plate 7 to move forward, thereby releasing the damper 8 and achieving its reset. This active mechanical transmission through gears and racks completely solves the problem in traditional buffer hinges where the reset of the linkage plate relies excessively on the elasticity of the damper itself and is prone to reset failure.

[0047] To ensure the stable and reliable operation of this core mechanism, the structure of this utility model is further refined: the driving gear 5 is coaxially connected to the hinge hole 31 on the first connecting rod 3 through the gear seat 51, ensuring the accuracy of transmission; the rack 6 is embedded in the mounting groove 71 provided through the upper and lower end faces of the linkage plate 7, improving the stability of the connection; a damping plate 73 is provided on the linkage plate 7 for connection with the damper 8, which facilitates assembly and optimizes the force; at the same time, a receiving area 91 is formed in the hinge cup 1 by the pressure plate 9 and a guide groove 92 is provided, which provides accurate and protected guidance for the linear sliding of the linkage plate 7.

[0048] In summary, through these structural innovations and synergistic effects, this utility model provides a highly efficient, stable, reliable gear-linked buffer hardware hinge with a longer service life, and therefore can be widely used.

[0049] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A gear-driven metal buffer hinge, comprising a hinge cup (1) and a hinge arm (2), wherein the hinge cup (1) and the hinge arm (2) are hinged together by a first connecting rod (3) and a second connecting rod (4), and the hinge cup (1) and the hinge arm (2) rotate relative to the first connecting rod (3) and the second connecting rod (4) to realize the opening and closing of the hinge, characterized in that: The first connecting rod (3) is provided with a drive gear (5) at its front end, and the drive gear (5) rotates around the hinge point between the first connecting rod (3) and the hinge cup (1). The hinge cup (1) is slidably mounted with a linkage plate (7) at its inner bottom, and a damper (8) is provided between the linkage plate (7) and the hinge cup (1). The linkage plate (7) is provided with a rack (6) that meshes with the drive gear (5).

2. The gear linked hardware buffer hinge according to claim 1, wherein: The drive gear (5) is mounted on the gear seat (51), and the gear seat (51) is provided with a mounting hole (52). The gear seat (51) is coaxially connected to the hinge hole (31) on the first connecting rod (3) through the mounting hole (52) and is fixed on the first connecting rod (3).

3. The gear linked hardware buffer hinge according to claim 1, wherein: The linkage plate (7) has an installation groove (71) extending through its upper and lower end faces, and the rack (6) is embedded in the installation groove (71).

4. The gear linked hardware buffered hinge of claim 1, wherein: The linkage plate (7) is provided with a damping plate (73) for connecting with the damper (8).

5. The gear linked hardware friction hinge of claim 1, wherein: The hinge cup (1) is also covered by a pressure plate (9), and a space is left between the pressure plate (9) and the inner bottom of the hinge cup (1) to form a receiving area (91). The linkage plate (7) slides within the receiving area (91).

6. A geared linkage hardware bumping hinge according to claim 5, wherein: The bottom of the pressure plate (9) is provided with a guide groove (92), and the linkage plate (7) is slidably installed in the guide groove (92).

7. The gear linked hardware friction hinge of claim 1, wherein: The damper (8) is a compression damping self-resetting hydraulic cylinder.

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