Rotating structure and hinge comprising same
The rotating structure, processed by laser cutting and welding, solves the wear and noise problems caused by the large gap between the hinge sleeve and the pivot, achieving smooth hinge rotation and damping effect, and improving the wear resistance and aesthetics of the hinge.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIEYANG CITY DOUBLE-WIN METAL IND CO LTD
- Filing Date
- 2025-08-23
- Publication Date
- 2026-05-15
AI Technical Summary
The large gap between the sleeve and the pivot of the existing hinge leads to wear and noise, and the lubricant is prone to leakage. The main hinge plate is also prone to deformation, so a spring needs to be added to prevent impact.
The rotating structure, which is processed by laser cutting and welding, achieves precise fit and damping effect through the coaxial closed design of the upper and lower sleeves and the middle sleeve, combined with the trumpet-shaped structure of the upper and lower springs, thereby reducing friction and preventing lubricant leakage.
It achieves smooth rotation, reduces wear and noise, improves the wear resistance and aesthetics of the hinge, and enhances load-bearing capacity and damping effect.
Smart Images
Figure CN224244658U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a hinge, specifically to an improvement of its rotating structure. It provides a rotating structure suitable for welding to obtain precision and wear resistance, as well as a hinge containing this structure. Background Technology
[0002] Existing hinges generally consist of a main hinge and a secondary hinge made of metal. Typically, the main hinge and the secondary hinge have upper, lower and middle sleeves rolled up respectively. A pivot passes through the upper sleeve, middle sleeve and lower sleeve and connects them together, allowing the secondary hinge to rotate relative to the main hinge.
[0003] These types of hinges have lower manufacturing precision, requiring a larger gap between the sleeve and the pivot for smooth rotation. However, this larger gap can easily cause the door to tilt, resulting in significant wear and noise during use. To reduce wear and noise, lubricant is often injected into the gap between the sleeve and the pivot. However, the lubricant can easily leak out along the gaps in the curled sleeve during rotation, causing contamination. In addition, the weight of the door is also transferred to the main hinge through the secondary hinge. In particular, the lower sleeve of the main hinge bears almost the entire weight of the door during use, causing the main hinge to bend and become prone to deformation and misalignment. Furthermore, springs are added to the hinge structure to provide damping and prevent uncontrolled rotation of the door during use, which could cause significant impact and potentially injure or damage to people and the door. Summary of the Invention
[0004] The purpose of this invention is to provide a rotating structure and a hinge containing the structure. It proposes a rotating structure that is suitable for laser cutting and welding to achieve higher precision, reduce friction during use, achieve smooth rotation, and provide greater damping in uncontrolled rotation.
[0005] The rotating structure of this utility model is achieved by the following scheme:
[0006] A rotating structure includes upper and lower sleeves, an intermediate sleeve, upper and lower spring pieces, and a rotating shaft. Each of the upper, intermediate, and lower sleeves has a washer welded to both ends. The upper, intermediate, and lower sleeves are sequentially mounted on the rotating shaft through the central holes of the washers. The upper and lower spring pieces are respectively mounted on the rotating shaft and located between the upper and intermediate sleeves, and between the intermediate and lower sleeves, respectively. The structure is characterized in that the upper, lower, and intermediate sleeves are all sheared from the same closed rotating body, with their central axes overlapping the central axis of the rotating shaft. Both the upper and lower spring pieces include a portion with a circular outer ring and a flared center. The upper and lower washers of the intermediate sleeve each include a circular outer ring and a concave portion shaped like an inverted frustum. The flared portions of the upper and lower spring pieces respectively match the concave portions of the upper and lower washers of the intermediate sleeve, and the flared openings of the upper and lower spring pieces respectively contact the lower washer of the upper sleeve and the upper washer of the lower sleeve. The upper washer of the upper sleeve and the lower washer of the lower sleeve are welded to the rotating shaft respectively, so that the upper and lower sleeves are squeezed by the upper and lower spring pieces respectively.
[0007] In this way, the intermediate sleeve can rotate around the pivot, and because it is restricted by the upper and lower sleeves, the intermediate sleeve cannot detach from the pivot, thus enabling the intermediate sleeve to rotate relative to the upper and lower sleeves.
[0008] Secondly, the outer rings of the upper and lower springs are embedded in the end faces of the upper and lower sleeves and the middle sleeve, and the concave part of the upper and lower washers of the middle sleeve matches the trumpet-shaped part of the upper and lower springs, which makes the rotation of the middle sleeve around the axis smoother.
[0009] Furthermore, the upper and lower springs gain elasticity during installation and compression, allowing the intermediate sleeve and the upper and lower sleeves to maintain a certain elasticity. This prevents the intermediate sleeve from contacting and wearing out when it rotates relative to the upper and lower sleeves. In particular, the trumpet-shaped part of the spring gains even greater elasticity during compression, which can also play a greater damping role for the rotation of the intermediate sleeve.
[0010] In addition, the upper, lower, and middle sleeves are all closed-loop structures, which overcomes the problem of gaps caused by sleeve curling. This not only makes them aesthetically pleasing but also prevents lubricant leakage. At the same time, the load-bearing capacity of the upper, lower, and middle sleeves is also improved.
[0011] The hinge of this utility model can be implemented by the following first solution:
[0012] A hinge includes a main hinge and a secondary hinge, characterized in that it also includes the aforementioned rotating structure, wherein the main hinge has upper and lower welding feet on one side, the secondary hinge has a middle welding foot on one side, and the upper and lower welding feet of the main hinge are welded to the sides of the upper and lower sleeves respectively, and the middle welding foot of the secondary hinge is also welded to the side of the middle sleeve.
[0013] The hinge of this utility model can also be implemented by the following second solution:
[0014] A hinge includes a main hinge and a secondary hinge piece, characterized in that it also includes the aforementioned rotating structure. The main hinge piece has upper and lower inserts on one side, and the secondary hinge piece has a middle insert on one side. The upper and lower sleeves and the middle sleeve are all provided with mounting holes. The upper and lower inserts of the main hinge piece are respectively inserted into the mounting holes of the upper and lower sleeves and welded to them. The middle insert of the secondary hinge piece is inserted into the mounting hole of the middle sleeve and welded to it as well.
[0015] Thus, in both the first and second schemes, the main hinge plate is installed together with the shaft via upper and lower sleeves, and the secondary hinge plate is also installed together with the shaft via an intermediate sleeve. As a result, the secondary hinge plate can rotate around the shaft along with the intermediate sleeve, thereby realizing the rotation function of the hinge. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of a specific embodiment of the hinge structure of this utility model;
[0017] Figure 2 yes Figure 1 A schematic diagram of hinge disassembly;
[0018] Figure 3 yes Figure 1 A schematic diagram of the rotating structure in a hinge;
[0019] Figure 4 yes Figure 1 A diagram showing the hinge in its closed position. Detailed Implementation
[0020] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings:
[0021] Reference Figure 1 The hinge in this specific embodiment includes a main hinge piece 1, a secondary hinge piece 2, and a rotating structure 3. (Refer to...) Figure 2 The main hinge 1 has upper and lower inserts 11 and 12 on one side, and the secondary hinge 2 has a middle insert 21 on one side. (Refer to...) Figure 2 and Figure 3The rotating structure 3 in this specific embodiment includes an upper sleeve 31, an intermediate sleeve 32, a lower sleeve 33, a rotating shaft 36, upper and lower spring pieces 34, and six washers 35a-35f. The upper sleeve 31, intermediate sleeve 32, and lower sleeve 33 all have mounting holes 31a, 32a, and 33a laser-cut along their length on their sides for assembly and welding. Two washers 35a and 35b are embedded in each end of the upper sleeve 31 and welded together; two washers 35c and 35d are embedded in each end of the intermediate sleeve 32 and welded together; and two washers 35e and 35f are embedded in each end of the lower sleeve 33 and welded together. The upper sleeve 31, intermediate sleeve 32, and lower sleeve 33 are sequentially fitted onto the rotating shaft 36. Upper and lower spring clips 34 are also mounted on the rotating shaft 36 and located between the upper sleeve 31 and intermediate sleeve 32, and between the intermediate sleeve 32 and lower sleeve 33, respectively. Furthermore, the upper sleeve 31, intermediate sleeve 32, and lower sleeve 33 are all cut from the same tubing. The mandrel and the central axis of the rotating shaft are more easily overlapped; both the upper and lower spring pieces 34 include a ring-shaped portion 34a and a flared portion 34b in the middle; the upper washer 35c and the lower washer 35d of the intermediate sleeve both include a ring-shaped portion 351 and a concave portion 352 in the middle, which is shaped like an inverted frustum; the flared portions 34b of the upper and lower spring pieces 34 respectively match the concave portions 352 of the upper and lower washers 35c and 35d of the intermediate sleeve, and the flared openings of the upper and lower spring pieces 34 can contact the lower washer 31b of the upper sleeve 31 and the upper washer 35e of the lower sleeve 33 respectively; the upper washer 31a of the upper sleeve 31 and the lower washer 35f of the lower sleeve 33 are welded to the rotating shaft 36 respectively, so that the upper and lower sleeves 31 and 33 press against the intermediate sleeve 32 through the upper and lower spring pieces 34 respectively. Refer to 1— Figure 3 The upper and lower pins 11 and 12 of the main hinge 1 can be inserted into the mounting holes 31a and 33a respectively, and are fixed together with the upper and lower sleeves 31 and 33 by laser welding. The middle pin 21 of the secondary hinge 2 can be inserted into the mounting hole 32a and is fixed together with the middle sleeve 32 by laser welding. (Refer to...) Figure 4 In this way, the secondary hinge 2 can rotate around the pivot 36 through the intermediate sleeve 32, so that the secondary hinge 2 can rotate relative to the main hinge 1 and be joined together.
Claims
1. A rotating structure, comprising upper and lower sleeves, an intermediate sleeve, upper and lower spring pieces, and a rotating shaft; wherein, The upper sleeve, intermediate sleeve, and lower sleeve are each fitted with a washer welded to both ends. The upper sleeve, intermediate sleeve, and lower sleeve are sequentially assembled onto the rotating shaft through the central holes of the washers. The upper and lower spring pieces are respectively installed on the rotating shaft and located between the upper sleeve and the intermediate sleeve, and between the intermediate sleeve and the lower sleeve. The characteristics are: the upper sleeve, lower sleeve, and intermediate sleeve are all sheared from the same closed rotating body, and their central axes overlap with the central axis of the rotating shaft; the upper and lower spring pieces each include a portion with a circular outer ring and a flared middle section; the upper washer and lower washer of the intermediate sleeve each include a circular outer ring and a concave portion with an inverted frustum-shaped middle section; the flared portions of the upper and lower spring pieces respectively match the concave portions of the upper and lower washers of the intermediate sleeve, and the flared openings of the upper and lower spring pieces respectively contact the lower washer of the upper sleeve and the upper washer of the lower sleeve. The upper washer of the upper sleeve and the lower washer of the lower sleeve are welded to the rotating shaft respectively, so that the upper and lower sleeves are squeezed by the upper and lower spring pieces respectively.
2. A hinge comprising main and secondary hinge pieces, characterized in that, It also includes the rotating structure of claim 1, wherein the main hinge has upper and lower welding feet on one side, the secondary hinge has a middle welding foot on one side, and the upper and lower welding feet of the main hinge are welded to the sides of the upper and lower sleeves respectively, and the middle welding foot of the secondary hinge is also welded to the side of the middle sleeve.
3. A hinge comprising main and secondary hinge pieces, characterized in that, It also includes the rotating structure of claim 1, wherein the main hinge has upper and lower pins on one side, the secondary hinge has a middle pin on one side, and the upper, lower and middle sleeves are all provided with mounting holes. The upper and lower pins of the main hinge are inserted into the mounting holes of the upper and lower sleeves respectively and welded to them. The middle pin of the secondary hinge is inserted into the mounting hole of the middle sleeve and welded to it as well.