Small stop-and-hold hinge
By designing a self-limiting hinge that combines damping screws and damping washers, the problem of existing hinges being unable to stop arbitrarily has been solved, achieving the effects of arbitrary stopping and simplified installation, thus improving ease of use and component lifespan.
Patent Information
- Application Number
- CN202521748675.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-18
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-08-18
AI Technical Summary
Existing hinges cannot achieve arbitrary hovering, resulting in inconvenience in use, and their structure is complex or inconvenient to install.
A small, self-limiting hinge with automatic stop was designed. By combining a damping screw and a damping washer, the movable end can be arbitrarily suspended. The interaction between the triangular protrusion and the baffle forms a limiting point, which simplifies the structure and extends the life of the parts.
It enables the active end to hover at any angle, simplifies the installation process, and improves ease of use and the lifespan of parts.
Smart Images

Figure CN224679349U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to connectors, and in particular to a small self-limiting hinge that can be suspended at will and has a good suspension effect. Background Technology
[0002] Currently, most hinges on the market are large hinges, and there are also some small hinges. However, most of them open to 180 degrees and cannot be stopped at any angle, which makes it extremely inconvenient to open and use some cover-type devices. Some hinges that can be stopped, such as the hinges on laptops, are inconvenient to install and use due to their complex structure and hidden features. Summary of the Invention
[0003] The present invention aims to solve the problem that existing hinges cannot be arbitrarily suspended and are inconvenient to use, and provides a small, self-limiting hinge that can be arbitrarily suspended and has a good suspension effect.
[0004] This utility model discloses a small, self-limiting hinge that stops automatically. The hinge comprises a fixed end, a movable end, a damping screw, and a damping washer. The fixed end has two symmetrical isosceles right-angled triangular plates at its tail ends, with baffles fixed to the inner hypotenuses of the two triangular plates. The triangular plates have circular holes. The movable end has two ear plates located between the two triangular plates and close to the triangular plates on the same side. The ear plates also have circular holes. A damping washer is placed between the ear plates and the triangular plates. A damping bolt passes sequentially through the circular holes on the triangular plates and ear plates, fixing the movable end to the tail end of the fixed end. The movable end rotates around the damping bolt. A triangular protrusion is provided on the outer edge of the ear plates, facing the tail end of the movable end. When the movable end rotates, the protrusion rotates counterclockwise to the baffle, contacting the baffle surface to form a limiting point.
[0005] The outer wall of the triangular plate is also provided with a damping pad, which is located between the damping bolt and the triangular plate. This damping pad can not only improve the damping coefficient, but also avoid direct friction between the damping bolt and the triangular plate, thereby improving the service life of the parts.
[0006] This utility model features a small, self-limiting hinge with a simple structure, scientific design, and convenient use. Through the interaction between the damping pad and the damping bolt, it can suspend the movable end during rotation, allowing the movable end to arbitrarily suspend within the rotation range. At the same time, a protrusion is provided at the tail end of the movable end, and the interaction between the protrusion and the baffle serves as a limit for movement. Attached Figure Description
[0007] Figure 1 This is a schematic diagram of the structure of this utility model.
[0008] Figure 2 This is a schematic diagram of the closed structure of this utility model.
[0009] Figure 3 This is a schematic diagram of the limiting state of this utility model.
[0010] Figure 4 This is a schematic diagram of the fixed end face.
[0011] Figure 5 This is a schematic diagram of the active end face.
[0012] The components include: fixed end 1, movable end 2, damping screw 3, damping washer 4, triangular plate 5, baffle 6, and protrusion 7. Detailed Implementation
[0013] Example 1: A small self-limiting hinge that stops automatically, characterized in that the limiting hinge includes a fixed end, a movable end, a damping screw, and a damping washer. The fixed end has two isosceles right-angled triangular plates symmetrically arranged at its tail ends. A baffle is fixed to the inner hypotenuse of each of the two triangular plates, and a circular hole is provided on each triangular plate. The movable end has two ear plates located between the two triangular plates and close to the triangular plates on the same side. A circular hole is provided on each ear plate. A damping washer is provided between the ear plates and the triangular plates. A damping bolt passes sequentially through the circular holes on the triangular plates and ear plates, fixing the movable end to the tail end of the fixed end. The movable end rotates around the damping bolt. A triangular protrusion is provided on the outer edge of the ear plate, facing the tail end of the movable end. When the movable end rotates, the protrusion rotates counterclockwise to the baffle, contacting the baffle surface to form a limiting point. A damping pad is also provided on the outer wall of the triangle plate. The damping pad is located between the damping bolt and the triangle plate. It can not only improve the damping coefficient, but also avoid direct friction between the damping bolt and the triangle plate, thereby improving the service life of the parts.
[0014] The fixed end can be directly installed on a 135° inclined surface, and installation can be completed from the outside using screws; the movable end can be directly installed on the cover plate from the outside, allowing the cover plate to move within the range of 0° to 97° and to be suspended at any position within this range, reaching the limit position when opened to 97°, and preventing the cover plate from tilting backward through the limitation of the limit point.
[0015] Using the damping bolt as the rotation axis and the central reference, its closing surface is located 1mm above the horizontal plane of the center point, and tilted downwards at 45°, forming a 135° angle with the opposite plane, and offset from the central reference of the rotation axis by 6.5mm as the opening limiting surface. The closing surface and the opening limiting surface are offset by 3mm as the fixed mounting surface of this utility model, and four M3 countersunk screws are used as the fixing surface for installation and fixation. The closing surface is located 1mm above the horizontal plane of the center point and is used as the mounting surface of the cover plate. φ9 is set as the outer circle of the rotation axis with the central reference, and a tangent line is set on this outer circle at a 150-degree angle with the closing surface. The circumscribed circle R2 and the inscribed circle R4 are tangent to the outer circle of φ9 again, and the horizontal distance between the farthest point of R2 and the central reference of the rotation axis is set to 7.5mm. The arc vertex formed by these parameters becomes the limiting point when the opening is 97°.
[0016] By employing the combined action of damping pads and damping screws, the movable end of this invention exhibits damping characteristics during operation. Through the interference fit and friction between the materials, the vibration and inertia generated by its rotation are attenuated, thereby achieving a suspension function at any time. The working damping magnitude of this invention can be adjusted by adjusting the tightness of the screws to accommodate cover plates of different sizes and weights.
Claims
1. A small, self-limiting hinge that stops automatically, characterized in that... The limiting hinge includes a fixed end, a movable end, a damping screw, and a damping washer. The fixed end has two symmetrical isosceles right-angled triangular plates at its tail ends, with baffles fixed to the inner hypotenuses of the two triangular plates. The triangular plates have circular holes. The movable end has two ear plates located between the two triangular plates and close to the triangular plates on the same side. The ear plates also have circular holes. A damping washer is placed between the ear plates and the triangular plates. A damping bolt passes sequentially through the circular holes on the triangular plates and ear plates, fixing the movable end to the tail end of the fixed end. The movable end rotates around the damping bolt. A triangular protrusion is provided on the outer edge of the ear plates, facing the tail end of the movable end. When the movable end rotates, the protrusion rotates counterclockwise to the baffle, contacting the baffle surface to form a limiting point.
2. The miniature self-limiting hinge as described in claim 1, characterized in that... A damping pad is also provided on the outer wall of the triangular plate, and the damping pad is located between the damping bolt and the triangular plate.