Damping hinge
Patent Information
- Application Number
- CN202522534618.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-28
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-11-28
AI Technical Summary
这对于需要门板与密封件精密贴合以保障气密性的场景而言，传统铰链因无法补偿任何安装误差或结构形变，往往难以达到更高密封等级的效果
[0008]通过采用上述技术方案，摩擦阻尼构件与铰轴形成接触摩擦，可以实现门转动过程中实现任意位置停留，防止门意外关闭；铰轴可在腰孔形的第二铰轴孔内移动以实现自适应调节，因此该铰链应用后，设备内抽真空（负压）后，设备的门板关闭时，可以相对门框前进一定距离，使得门板能够与门框上的密封件充分接触，使得密封等级达到更高要求；位置调节和转动阻尼两个功能完美地集成在一个紧凑的结构中；更为重要的是上述设计下，摩擦阻尼构件设计下，不仅能够提供稳定的摩擦阻尼，而且第一构件和第二构件自适应调节的过程中，压缩弹簧能够提供缓冲，门板不会因为瞬间负压而产生变形。
Smart Images
Figure CN224919056U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to hardware components, specifically hinges. Background Technology
[0002] A hinge is a mechanical device used to connect two solids and allow them to rotate relative to each other. Damped hinges, in particular, provide resistance through a built-in damper, achieving a slow, quiet, and cushioned closing, thus significantly improving the safety, durability, and user experience of the device. Therefore, they are widely used.
[0003] While damping hinges offer a soft-close function, their traditional structure has inherent limitations in vacuum sealing applications. Because the two hinge leaves are concentrically fitted via a hinge shaft, the door panel's spatial position is fixed after installation, lacking fine-tuning capabilities. For scenarios requiring a precise fit between the door panel and the seal to ensure airtightness, traditional hinges often fail to achieve higher sealing levels because they cannot compensate for any installation errors or structural deformations. Utility Model Content
[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a damping hinge with adaptive adjustment function to adapt to higher-level sealing applications.
[0005] To achieve the above objectives, the present invention provides the following technical solution: A damping hinge includes a first component, a second component, a hinge shaft, and a friction damping component. The first component has a hinge shaft sleeve with a first hinge shaft hole. A hinge shaft is inserted into the first hinge shaft hole. The second component has a movable hinge shaft seat with a second hinge shaft hole. The second component is movably fitted onto the hinge shaft via the second hinge shaft hole. The first and second components rotate relative to each other around the hinge shaft. The friction damping component is located on the movable hinge seat and acts on the hinge shaft. The second hinge shaft hole has an oblong cross-section, allowing... The hinge shaft is allowed to generate radial displacement within the second hinge shaft hole, thereby achieving adaptive adjustment of the assembly position of the first component and the second component. On the movable hinge shaft seat, a damping element mounting hole is provided at any semi-circular end facing the length direction of the second hinge shaft hole. One end of the damping element mounting hole leads to the second hinge shaft hole, and the other end of the damping mounting hole is provided with a limiting end. The friction damping component includes a helical compression spring limited within the damping element mounting hole. One end of the helical compression spring extends into the second hinge shaft hole and always abuts against the cylindrical surface of the hinge shaft with a preload, while the other end of the helical compression spring abuts against the limiting end.
[0006] Preferably, the limiting end is a stud plug with external threads, the damping component mounting hole has an internal thread port, and the stud plug is screwed into the internal thread port to form an adjustable screw-in position in the damping component mounting hole.
[0007] Preferably, the movable hinge bearing includes two bearing units arranged at intervals, with the hinge sleeve located between the two bearing units, and a damping element mounting hole provided on each bearing unit.
[0008] By adopting the above technical solution, the friction damping component forms contact friction with the hinge shaft, enabling the door to stop at any position during rotation and preventing accidental closure. The hinge shaft can move within the oblong-shaped second hinge shaft hole to achieve adaptive adjustment. Therefore, after the hinge is applied, when the equipment is evacuated (negative pressure) and the door panel closes, it can advance a certain distance relative to the door frame, allowing the door panel to fully contact the seals on the door frame, thus achieving a higher sealing level. The position adjustment and rotation damping functions are perfectly integrated into a compact structure. More importantly, under the above design, the friction damping component not only provides stable friction damping, but also, during the adaptive adjustment of the first and second components, the compression spring provides buffering, preventing the door panel from deforming due to instantaneous negative pressure.
[0009] The present invention will now be further described with reference to the accompanying drawings. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the damping hinge of this utility model; Figure 2 This is a side view of the damping hinge of this utility model along the hinge axis. Figure 3 for Figure 2 A sectional view cut along section AA. Figure 4 This is an exploded view of the damping hinge of this utility model. Detailed Implementation
[0011] See appendix Figures 1-4 This utility model discloses a damping hinge, comprising a first component 1, a second component 2, a hinge shaft 3, and a friction damping component 4. The first component 1 has a hinge shaft sleeve 11 with a first hinge shaft hole 111 into which the hinge shaft 3 is inserted. The second component 2 has a movable hinge shaft seat 21 with a second hinge shaft hole 211. The second component 2 is movably fitted onto the hinge shaft 3 via the second hinge shaft hole 211. The movable hinge shaft seat 21 includes two spaced-apart bearing units 21-1, with the hinge shaft sleeve 11 located between the two bearing units 21-1. The first component 1 and the second component 2 rotate relative to each other around the hinge shaft 3. The friction damping component 4 is disposed on the movable hinge seat 21 and acts on the hinge shaft 3. Figure 3 and Figure 4The second hinge hole 211 has an oblong cross-section, which allows the hinge 3 to undergo radial displacement within the second hinge hole 211. This enables adaptive adjustment of the assembly position of the first component 1 and the second component 2. Specifically, the first component 1 moves radially within the second hinge hole 211 of the second component 2 via the hinge 3. Thus, when the door panel with the damping hinge is closed, it can move a certain distance relative to the door frame, allowing the door panel to automatically and tightly adhere to the door frame's seal. In a vacuum sealing device, the door panel will automatically adhere to the seal due to the negative pressure generated within the device, achieving a higher level of sealing. Sealing; On the movable hinge seat 21, a damping element mounting hole 212 is provided at any semi-circular end in the length direction of the second hinge hole 211. A damping element mounting hole 212 is provided on each bearing unit 21-1. One end of the damping element mounting hole 212 leads to the second hinge hole 211, and the other end of the damping mounting hole 212 is provided with a limiting end 22. The friction damping member 4 includes a helical compression spring 41 limited in the damping element mounting hole 212. One end of the helical compression spring 41 extends into the second hinge hole 211 and always abuts against the cylindrical surface of the hinge 3 with a preload. The other end of the helical compression spring 41 abuts against the limiting end 22.
[0012] Preferably, the limiting end 22 is a stud plug with external threads (threads not shown in the figures), and the damping element mounting hole 212 has an internal thread port 2121. The stud plug is screwed into the internal thread port 2121, forming an adjustable screw-in position configuration in the damping element mounting hole 212. The head of the stud plug adopts an inner internal angle to achieve an embedded design. By rotating the stud plug, the preload of the helical compression spring can be adjusted.
[0013] The damping hinge of this utility model has at least the following advantages: 1. The friction damping component forms contact friction with the hinge shaft, which can enable the door to stop at any position during rotation, preventing the door from closing accidentally. 2. The hinge shaft can move within the oblong hole to achieve adaptive adjustment. Therefore, after the hinge is applied, when the equipment is evacuated (negative pressure), the hinge allows the door panel to move closer to the door frame during the closing process, and the door panel can advance a certain distance relative to the door frame, so that the door panel can fully contact the seal on the door frame, achieving a higher sealing level. 3. The two functions of position adjustment and rotation damping are perfectly integrated into a compact structure. More importantly, under the above design, the friction damping component design not only provides stable friction damping, but also, during the adaptive adjustment of the first and second components, the compression spring can provide buffering, and the door panel will not deform due to instantaneous negative pressure.
Claims
1. A damping hinge, comprising a first component, a second component, a hinge shaft, and a friction damping component, wherein the first component is provided with a hinge shaft sleeve, the hinge shaft sleeve is provided with a first hinge shaft hole, a hinge shaft is inserted into the first hinge shaft hole, the second component is provided with a movable hinge shaft seat, the movable hinge shaft seat is provided with a second hinge shaft hole, the second component is movably fitted onto the hinge shaft through the second hinge shaft hole, the first component and the second component rotate relative to each other around the hinge shaft, and the friction damping component is disposed on the movable hinge seat and acts on the hinge shaft, characterized in that: The second hinge shaft hole has an oblong cross-section, which allows the hinge shaft to generate radial displacement within the second hinge shaft hole, thereby achieving adaptive adjustment of the assembly position of the first component and the second component. On the movable hinge shaft seat, a damping element mounting hole is provided at either semicircular end facing the length direction of the second hinge shaft hole. One end of the damping element mounting hole leads to the second hinge shaft hole, and the other end of the damping element mounting hole is provided with a limiting end. The friction damping component includes a helical compression spring limited within the damping element mounting hole. One end of the helical compression spring extends into the second hinge shaft hole and is always in contact with the cylindrical surface of the hinge shaft with a preload, while the other end of the helical compression spring abuts against the limiting end.
2. The damping hinge according to claim 1, characterized in that: The limiting end is a stud plug with external threads, and the damping component mounting hole has an internal thread port. The stud plug is screwed into the internal thread port and is configured to have an adjustable screw-in position in the damping component mounting hole.
3. The damping hinge according to claim 1, characterized in that: The movable hinge bearing includes two bearing units arranged at intervals, with a hinge sleeve located between the two bearing units. A damping element mounting hole is provided on each bearing unit.