Hinge device and manufacturing method thereof
By welding the rotating arm to the rotating parts and using a stamping process to manufacture the hinge device, the problems of insufficient load-bearing capacity and abnormal noise in traditional hinge devices are solved, achieving stable use and improved cost efficiency in high-load environments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-11
- Publication Date
- 2026-04-03
AI Technical Summary
Traditional hinges have weak load-bearing capacity, cannot adapt to high-load environments, and are prone to making abnormal noises during use.
The rotating arm is welded to the outer circumference of the rotating part by welding, avoiding the need for holes at the end of the rotating arm. This increases the outer diameter of the rotating part to improve its load-bearing capacity. The rotating blades are manufactured by stamping to improve strength and efficiency.
This technology enables the hinge device to operate stably under high load conditions, avoids abnormal noise, reduces production costs and cycle time, and improves production efficiency.
Smart Images
Figure CN121781825A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of architectural hardware technology, and more specifically, to a hinge device and its manufacturing method. Background Technology
[0002] A hinge is a structure that connects a door leaf to a door frame, allowing the door leaf to rotate relative to the frame. However, existing hinge technologies have relatively weak load-bearing capacity, making them unsuitable for high-load working environments. Furthermore, these hinges are prone to producing abnormal noises during use, necessitating improvements. Summary of the Invention
[0003] The purpose of this invention is to provide a hinge device and its manufacturing method to solve the above-mentioned problems. This invention achieves the above objective through the following technical solutions.
[0004] In a first aspect, the present invention provides a hinge device, comprising: A first rotating assembly, comprising a first rotating arm, a first rotating member, and a second rotating member, wherein the first rotating arm includes opposing first and second end faces, the first end face is welded to the outer peripheral surface of the first rotating member, and the second end face is welded to the outer peripheral surface of the second rotating member; and The second rotating assembly includes a second rotating arm, a third rotating member, and a fourth rotating member. The first rotating arm is rotatably connected to the second rotating arm. The second rotating arm includes a third end face and a fourth end face that are opposite each other. The third end face is welded to the outer peripheral surface of the third rotating member, and the fourth end face is welded to the outer peripheral surface of the fourth rotating member.
[0005] In one embodiment, the first end face is a concave arc surface, the outer peripheral surface of the first rotating member is a cylindrical surface, and the curvature of the first end face is the same as the curvature of the outer peripheral surface of the first rotating member.
[0006] In one embodiment, the first rotating arm further includes a first top surface and a first bottom surface, wherein the first end surface and the second end surface are both connected between the first top surface and the first bottom surface, wherein: The connection between the first end face and the first top face is provided with a rounded corner; and / or, the connection between the first end face and the first bottom face is provided with a rounded corner; and / or, the arc angle corresponding to the first end face is θ, 60°≤θ≤90°.
[0007] In one embodiment, the first rotating arm includes a plurality of stacked first rotating plates, with each first rotating plate having its opposite ends welded to a first rotating member and a second rotating member, respectively; the second rotating arm includes a plurality of stacked second rotating plates, with each second rotating plate having its opposite ends welded to a third rotating member and a fourth rotating member, respectively.
[0008] In one embodiment, the first rotating plate includes a first side surface and a second side surface opposite to each other along the thickness direction of the first rotating plate. The first side surface has a protrusion, and the second side surface has a groove. The position of the groove corresponds to the position of the protrusion, and the height of the protrusion is equal to the depth of the groove.
[0009] In one embodiment, the first rotating arm further has a first shaft hole extending axially along the first rotating member, the first shaft hole being located between the first end face and the second end face; the second rotating arm further has a second shaft hole extending axially along the third rotating member, the second shaft hole being located between the third end face and the fourth end face; the hinge device further includes a rotating shaft passing through the first shaft hole and the second shaft hole.
[0010] In one embodiment, there are two first rotating arms, which are spaced apart along the axial direction of the first rotating member, and both first rotating arms are connected between the first rotating member and the second rotating member, with the second rotating arm disposed between the two first rotating arms.
[0011] In one embodiment, the hinge device further includes a first decorative cover and a second decorative cover, the first decorative cover being disposed on the outer surface of the first rotating assembly, and the second decorative cover being disposed on the outer surface of the second rotating assembly.
[0012] In one embodiment, the first rotating arm includes a first arm, a second arm, and a first bushing. The first arm is welded between the first bushing and the first rotating member, and the second arm is welded between the first bushing and the second rotating member. The second rotating arm includes a third arm, a fourth arm, and a second bushing. The first bushing and the second bushing are coaxially arranged. The third arm is welded between the second bushing and the third rotating member, and the fourth arm is welded between the second bushing and the fourth rotating member. The hinge device further includes a rotating shaft that passes through the first bushing and the second bushing.
[0013] Secondly, the present invention also provides a method for manufacturing a hinge device, the hinge device further comprising a rotating shaft, the manufacturing method comprising: The first end face of the first rotating arm is welded to the outer peripheral surface of the first rotating component, and the second end face of the first rotating arm is welded to the outer peripheral surface of the second rotating component to form the first rotating assembly. The third end face of the second rotating arm is welded to the outer peripheral surface of the third rotating member, and the fourth end face of the second rotating arm is welded to the outer peripheral surface of the fourth rotating member to form the second rotating assembly. The rotating shaft is inserted through the first rotating arm and the second rotating arm along the axial direction of the first rotating member.
[0014] In one embodiment, the manufacturing method further includes: Multiple first rotating pieces and multiple second rotating pieces are formed by stamping; Multiple first rotating plates are stacked and arranged, and the first rotating arm is formed by riveting or welding. Multiple second rotating plates are stacked and arranged, and the second rotating arm is formed by riveting or welding.
[0015] In one embodiment, the manufacturing method further includes: A first decorative cover and a second decorative cover are provided, wherein the first decorative cover is disposed on the outer surface of the first rotating assembly, and the second decorative cover is disposed on the outer surface of the second rotating assembly.
[0016] The present invention provides a hinge device and its manufacturing method. The hinge device includes a first rotating assembly and a second rotating assembly. The first rotating assembly includes a first rotating arm, a first rotating member, and a second rotating member. The first end face of the first rotating arm is welded to the outer peripheral surface of the first rotating member, and the second end face is welded to the outer peripheral surface of the second rotating member. The second rotating assembly includes a second rotating arm, a third rotating member, and a fourth rotating member. The first rotating arm is rotatably connected to the second rotating arm. The third end face of the second rotating arm is welded to the outer peripheral surface of the third rotating member, and the fourth end face is welded to the outer peripheral surface of the fourth rotating member. Traditional methods of having the rotating member pass through the rotating arm require drilling a hole at the end of the rotating arm and then inserting the shaft through that hole. This reduces the strength of the rotating arm, thereby significantly reducing the load-bearing capacity of the hinge. Furthermore, the shaft's rotation within the hole causes wear, shortening the hinge's lifespan and producing abnormal noise. This invention welds the first end face of the first rotating arm to the outer peripheral surface of the first rotating member, the second end face to the outer peripheral surface of the second rotating member, the third end face of the second rotating arm to the outer peripheral surface of the third rotating member, and the fourth end face to the outer peripheral surface of the fourth rotating member. This eliminates the need for opening holes at the ends of the first and second rotating arms, allowing the outer diameters of the first, second, third, and fourth rotating members to be designed to be larger without compromising the strength of the first and second rotating arms. As a result, the hinge device can be used in high-load-bearing environments without producing abnormal noise.
[0017] These or other aspects of the invention will become more apparent from the following description of the embodiments. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the hinge device provided in the first embodiment of the present invention.
[0020] Figure 2 yes Figure 1 A schematic diagram of the assembly of the first rotating component and the first decorative cover of the hinge device shown.
[0021] Figure 3 yes Figure 1 A schematic diagram of the structure of the first rotating component of the hinge device shown.
[0022] Figure 4 yes Figure 3 Exploded view of part of the first rotating component.
[0023] Figure 5 yes Figure 2 Exploded view of the first rotating assembly and the first decorative cover.
[0024] Figure 6 yes Figure 3 The main view of the first rotating component.
[0025] Figure 7 yes Figure 6 A magnified view of a portion at point A.
[0026] Figure 8 yes Figure 1 A schematic diagram of the assembly of the second rotating component and the second decorative cover of the hinge device shown.
[0027] Figure 9 yes Figure 8 Exploded view of the second rotating component and the second decorative cover.
[0028] Figure 10 This is a schematic diagram of the hinge device provided in the second embodiment of the present invention.
[0029] Figure 11 yes Figure 10 A partially exploded view of the hinge assembly.
[0030] Figure 12 This is a flowchart of the manufacturing method of the hinge device provided by the present invention. Detailed Implementation To facilitate understanding of the embodiments of the present invention, a more complete description of the embodiments will be given below with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the present invention.
[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the embodiments of the invention is for the purpose of describing particular implementations only and is not intended to limit the invention.
[0032] The inventors of this invention discovered that in traditional hinge devices, the end of the rotating arm has a hole for the pivot to pass through. This design limits the diameter of the pivot, because a larger pivot requires a larger hole, resulting in the edge of the hole being close to the edge of the rotating arm. This makes the end of the rotating arm prone to deformation and damage under stress. If the pivot diameter is small, it is also prone to bending under stress. Furthermore, this design, where the pivot and hole fit together, causes abnormal noise during rotation. In short, traditional hinge devices have weak load-bearing capacity, cannot adapt to high-load working environments, and are prone to producing abnormal noise during use, requiring improvement.
[0033] Furthermore, the inventors discovered that most commonly available hinge mechanisms on the market employ precision casting as a single-piece molding process, or use alloys (such as zinc alloys or aluminum alloys) through die casting. These traditional processes have the following significant drawbacks: 1. High production costs: Precision casting and die casting have high initial mold investment costs and relatively low utilization rates of metal raw materials, making it difficult to control the production cost per piece.
[0034] 2. Complex process and long production cycle: The one-piece molding process involves multiple steps such as smelting, casting, deburring, and finishing, resulting in a long production process and the need to improve efficiency.
[0035] 3. Heavy component weight: Especially for components made of zinc alloy or aluminum alloy in one piece, they are often made thicker and heavier in order to ensure strength, which increases the overall weight of the product.
[0036] To improve at least some of the aforementioned problems, the present invention provides a hinge device and its manufacturing method. By welding the first end face of the first rotating arm to the outer peripheral surface of the first rotating member, the second end face to the outer peripheral surface of the second rotating member, the third end face of the second rotating arm to the outer peripheral surface of the third rotating member, and the fourth end face to the outer peripheral surface of the fourth rotating member, it is not necessary to open holes at the ends of the first and second rotating arms. This allows the outer diameters of the first, second, third, and fourth rotating members to be designed to be larger without compromising the strength of the first and second rotating arms. Therefore, the hinge device can be used in high-load-bearing environments without producing abnormal noise. The following detailed description of the hinge device and its manufacturing method provided by the present invention, in conjunction with specific embodiments and the accompanying drawings, provides a detailed explanation. First Embodiment Please see Figures 1 to 4 The present invention provides a hinge device 10, including a first rotating component 11 and a second rotating component 12, wherein the first rotating component 11 and the second rotating component 12 are rotatably connected, for example, the first rotating component 11 and the second rotating component 12 are hinged.
[0037] The first rotating assembly 11 includes a first rotating arm 112, a first rotating member 114, and a second rotating member 116. The first rotating arm 112 includes a first end face 1122 and a second end face 1124 facing each other, located at both ends of the first rotating arm 112 along its length. The first end face 1122 is welded to the outer peripheral surface of the first rotating member 114, and the second end face 1124 is welded to the outer peripheral surface of the second rotating member 116. It is understood that the first rotating arm 112, the first rotating member 114, and the second rotating member 116 are all metal parts to facilitate welding of the first rotating arm 112 and the first rotating member 114, and welding of the first rotating arm 112 and the second rotating member 116.
[0038] In this embodiment, the welding described above is high-energy beam welding, such as laser welding. Since laser welding is a highly efficient and easily automated modern production process, it is very suitable for large-scale mass production. Therefore, using laser welding can greatly shorten the production cycle of the hinge device 10. In one embodiment, the welding described above can also be ordinary heat source welding.
[0039] Since the first rotating arm 112 and the first rotating component 114 (or the second rotating component 116) are fixedly connected by welding, no hole is needed at the end of the first rotating arm 112, thus ensuring the bending strength of the first rotating arm 112 and enabling the first rotating assembly 11 to withstand a large load. Furthermore, the first rotating component 114 (or the second rotating component 116) will not rotate relative to the first rotating arm 112, preventing abnormal noise from the hinge device 10 during use.
[0040] The first rotating arm 112 is generally a bent plate-like structure. The first rotating arm 112 includes a first rotating part 1121, a second rotating part 1123, and a first hinge part 1125. The first hinge part 1125 connects the first rotating part 1121 and the second rotating part 1123, wherein the included angle between the first rotating part 1121 and the second rotating part 1123 is an obtuse angle, for example, 120°-150°. A first end face 1122 is disposed on the first rotating part 1121, and a second end face 1124 is disposed on the second rotating part 1123.
[0041] The first rotating component 114 and the second rotating component 116 are cylindrical structures. The first rotating component 114 and the second rotating component 116 are the core components for the rotational movement of the hinge device 10, and are respectively disposed at opposite ends of the first rotating arm 112. Specifically, the first rotating component 114 is a hollow cylindrical structure, that is, the first rotating component 114 is a bushing, the interior of which is used to install bearings or directly as a through-hole for the shaft. The second rotating component 116 is a solid cylindrical structure, that is, the second rotating component 116 is a shaft. In one embodiment, both the first rotating component 114 and the second rotating component 116 can be bushings. In another embodiment, both the first rotating component 114 and the second rotating component 116 can be shafts, depending on the actual situation.
[0042] The first end face 1122 is a concave arc surface, and the outer peripheral surface of the first rotating member 114 is a cylindrical surface, defined as the first outer peripheral surface 1141. The curvature of the first end face 1122 is the same as the curvature of the outer peripheral surface of the first rotating member 114, that is, the curvature of the first end face 1122 is the same as the curvature of the first outer peripheral surface 1141, so that the first end face 1122 can fit as closely as possible to the first rotating member 114, increasing the connection strength between the first end face 1122 and the first outer peripheral surface 1141, thereby increasing the connection strength between the first rotating arm 112 and the first rotating member 114.
[0043] Please see Figures 3 to 7 The first rotating arm 112 also includes a first top surface 1127 and a first bottom surface 1128, which are two surfaces of the first rotating arm 112 along its width direction. A first end surface 1122 and a second end surface 1124 are both connected between the first top surface 1127 and the first bottom surface 1128. A portion of the first top surface 1127 is disposed in the first rotating part 1121, a portion in the second rotating part 1123, and another portion in the first hinge part 1125. Correspondingly, the first bottom surface 1128 is also disposed in the first rotating part 1121, the second rotating part 1123, and the first hinge part 1125.
[0044] The junction of the first end face 1122 and the first top face 1127 is provided with a rounded corner R, such as Figure 7 As shown, a gap G is formed between the first top surface 1127 and the outer peripheral surface of the first rotating member 114, so that more molten metal can be accommodated when the first end face 1122 and the first outer peripheral surface 1141 are welded. That is, the first rotating arm 112 and the first rotating member 114 can be connected by more molten metal during welding, thereby improving the connection strength between the first rotating arm 112 and the first rotating member 114. A fillet R is provided at the connection between the first end face 1122 and the first bottom surface 1128, so that the first bottom surface 1128 is spaced from the outer peripheral surface of the first rotating member 114, so that more molten metal can be accommodated when the first end face 1122 and the first outer peripheral surface 1141 are welded, which can also further improve the connection strength between the first rotating arm 112 and the first rotating member 114.
[0045] The arc angle corresponding to the first end face 1122 is θ, where 60°≤θ≤90°. When θ>90°, the contact area between the first end face 1122 and the first outer peripheral surface 1141 is large, resulting in a thinner end of the first rotating arm 112, making the end of the first rotating arm 112 more prone to breakage under stress. When θ<60°, the contact area between the first end face 1122 and the first outer peripheral surface 1141 is small, making it difficult to ensure the connection strength between the first end face 1122 and the first outer peripheral surface 1141, thus affecting the connection strength between the first rotating arm 112 and the first rotating component 114. That is, when the arc angle θ corresponding to the first end face 1122 satisfies: 60°≤θ≤90°, it ensures sufficient connection strength between the first rotating arm 112 and the first rotating component 114, and also ensures sufficient strength of the first rotating arm 112 to improve the load-bearing capacity of the hinge device 10.
[0046] In this embodiment, the arc angle corresponding to the second end face 1124 is also between 60° and 90°. On the basis of ensuring that the first rotating arm 112 and the second rotating member 116 have sufficient connection strength, the first rotating arm 112 can also have sufficient strength to improve the load-bearing capacity of the hinge device 10.
[0047] The first rotating arm 112 also has a first shaft hole 1126 extending axially along the first rotating member 114. The first shaft hole 1126 is located between the first end face 1122 and the second end face 1124, and between the first top surface 1127 and the first bottom surface 1128. The axial direction of the first rotating member 114 refers to the direction of extension of the central axis of the first rotating member 114. Specifically, the first shaft hole 1126 is disposed in the first hinge portion 1125. In this embodiment, the axial direction of the first rotating member 114 is the same as the axial direction of the second rotating member 116.
[0048] The width of the first hinge portion 1125 is greater than the thickness of the first rotating portion 1121 and greater than the thickness of the second rotating portion 1123. This increases the distance from the edge of the first shaft hole 1126 to the first top surface 1127 or the first bottom surface 1128, so that the first hinge portion 1125 has sufficient strength even when the first shaft hole 1126 is opened, thereby improving the load-bearing capacity of the hinge device 10.
[0049] Please continue reading. Figure 5 The first rotating arm 112 includes multiple stacked first rotating pieces 1129, with each of the opposite ends of the first rotating piece 1129 welded to a first rotating member 114 and a second rotating member 116, respectively. In this embodiment, after the multiple first rotating pieces 1129 are stacked to form an integral structure (i.e., the first rotating arm 112), the first rotating arm 112 is then welded to the first rotating member 114 and the second rotating member 116 to improve production efficiency. The first rotating arm 112 is formed by stacking multiple first rotating pieces 1129, which effectively reduces the weight of the first rotating arm 112 while ensuring strength. Furthermore, the structure of the first rotating pieces 1129 itself has a certain degree of toughness and bending resistance, resulting in high strength for the first rotating arm 112 stacked into an integral structure. The welding of the first rotating arm 112 to the first rotating member 114 and the second rotating member 116 ensures connection strength and improves the overall structural reliability of the hinge device 10 of the present invention.
[0050] Multiple first rotating pieces 1129 can be made from multiple identical metal sheets through a stamping process. That is, multiple first rotating pieces 1129 can be formed in the same stamping operation, greatly improving the production efficiency of the first rotating pieces 1129. The stamping process has high sheet metal utilization and produces less scrap, far lower than the material loss in the casting process, reducing the material cost of the first rotating arm 112. Furthermore, the design and manufacturing cost and cycle of stamping dies are far lower than those of complex precision casting dies or die-casting dies, reducing the mold cost required to produce the first rotating arm 112. In other words, compared to the first rotating arm 112 produced by the traditional casting process, the stamping process can reduce the production cost of the first rotating arm 112, thereby reducing the production cost of the hinge device 10. The stamping process is a highly efficient and easily automated modern production process, very suitable for large-scale mass production, and can greatly shorten the production cycle. Therefore, using the stamping process can greatly shorten the production cycle of the first rotating arm 112, thereby shortening the production cycle of the hinge device 10. The number of first rotating pieces 1129 can be greater than three.
[0051] In this embodiment, multiple first rotating pieces 1129 are connected by riveting. Specifically, each first rotating piece 1129 includes a first side surface 1129a and a second side surface 1129b opposite to each other along its thickness direction. The first side surface 1129a has a protrusion, and the second side surface 1129b has a groove. The position of the groove corresponds to the position of the protrusion, and the height of the protrusion is equal to the depth of the groove. Thus, when two first rotating pieces 1129 are engaged, the protrusion of the first side surface 1129a of one first rotating piece 1129 can engage with the groove of the second side surface 1129b of the other first rotating piece 1129, thereby achieving the riveting of the two first rotating pieces 1129. It can be understood that multiple first rotating pieces 1129 can also be riveted together in a similar manner to form a first rotating arm 112.
[0052] In one embodiment, a plurality of first rotating pieces 1129 may be stacked and their edges aligned, and then fixedly connected by welding to form a first rotating arm 112. Then, the first rotating arm 112 is welded to a first rotating member 114 and a second rotating member 116.
[0053] In one embodiment, the first rotating plate 1129 is further provided with weight-reducing holes to reduce the overall weight of the hinge device 10, thereby achieving a lightweight design. In another embodiment, the first rotating plate 1129 is further provided with reinforcing ribs to increase the strength of the first rotating arm 112. In other embodiments, the first rotating plate 1129 can also have its overall strength improved through a secondary hardening heat treatment.
[0054] Please see Figure 8 and Figure 9 The second rotating assembly 12 includes a second rotating arm 121, a third rotating member 123, and a fourth rotating member 125. The first rotating arm 112 is rotatably connected to the second rotating arm 121, thereby connecting the first rotating assembly 11 to the second rotating assembly 12. The second rotating arm 121 includes opposing third end faces 1211 and 1213, which are located at both ends of the second rotating arm 121 along its length. The third end face 1211 is welded to the outer peripheral surface of the third rotating member 123, and the fourth end face 1213 is welded to the outer peripheral surface of the fourth rotating member 125. It is understood that the second rotating arm 121, the third rotating member 123, and the fourth rotating member 125 are all metal parts to facilitate welding between the second rotating arm 121 and the third rotating member 123, and between the second rotating arm 121 and the fourth rotating member 125.
[0055] The structure of the second rotating assembly 12 is roughly the same as that of the first rotating assembly 114. The difference lies in the number of the second rotating arms 121 compared to the number of the first rotating arms 112.
[0056] Specifically, there are two first rotating arms 112, which are spaced apart along the axial direction of the first rotating member 114, and both first rotating arms 112 are connected between the first rotating member 114 and the second rotating member 116. The second rotating arm 121 is disposed between the two first rotating arms 112.
[0057] Since the second rotating arm 121 and the third rotating component 123 (or the fourth rotating component 125) are fixedly connected by welding, no hole is needed at the end of the second rotating arm 121 to ensure its bending strength and enable the second rotating assembly 12 to withstand a large load. Furthermore, the third rotating component 123 (or the fourth rotating component 125) will not rotate relative to the second rotating arm 121, preventing abnormal noise from the hinge device 10 during use.
[0058] The second rotating arm 121 includes a plurality of stacked second rotating pieces 1215, with each of the opposite ends of the second rotating piece 1215 welded to the third rotating member 123 and the fourth rotating member 125, respectively. In this embodiment, the plurality of second rotating pieces 1215 are stacked to form an integral structure (i.e., the second rotating arm 121), and then the second rotating arm 121 is welded to the third rotating member 123 and the fourth rotating member 125 to improve production efficiency. The second rotating arm 121 is formed by stacking a plurality of second rotating pieces 1215, which effectively reduces the weight of the second rotating arm 121 while ensuring strength. Moreover, the structure of the second rotating pieces 1215 itself has a certain degree of toughness and bending resistance, which makes the second rotating arm 121, which is stacked into an integral structure, have high strength. The welding of the second rotating arm 121 to the third rotating member 123 and the fourth rotating member 125 ensures the connection strength and improves the overall structural reliability of the hinge device 10 of the present invention.
[0059] The second rotating arm 121 also has a second shaft hole 1217 extending axially along the third rotating member 123, the second shaft hole 1217 being located between the third end face 1211 and the fourth end face 1213. The axial direction of the third rotating member 123 refers to the direction of extension of its central axis. In this embodiment, the axial directions of the third rotating member 123, the fourth rotating member 125, and the first rotating member 114 are all the same. The first shaft hole 1126 and the second shaft hole 1217 are coaxially arranged, that is, the central axis of the first shaft hole 1126 coincides with the central axis of the second shaft hole 1217.
[0060] Please see Figure 1 , Figure 3 and Figure 8The hinge device 10 also includes a rotating shaft 13, which passes through the first shaft hole 1126 and the second shaft hole 1217, so that the first rotating arm 112 and the second rotating arm 121 are rotatably connected, that is, the first rotating assembly 11 and the second rotating assembly 12 are rotatably connected.
[0061] The hinge device 10 also includes a first decorative cover 15 and a second decorative cover 16. The first decorative cover 15 is disposed on the outer surface of the first rotating assembly 11, and the second decorative cover 16 is disposed on the outer surface of the second rotating assembly 12, so as to make the overall structure of the hinge device 10 more concise and beautiful, and also to have a dustproof function, so as to avoid dust accumulation on the first rotating assembly 11 and the second rotating assembly 12 (e.g., the surfaces of the first rotating arm 112 and the second rotating arm 121).
[0062] The first decorative cover 15 is disposed on the top surface of the first rotating arm 112, the outer peripheral surface of the first rotating member 114, and the outer peripheral surface of the second rotating member 116. The second decorative cover 16 is disposed on the top surface of the second rotating arm 121, the outer peripheral surface of the third rotating member 123, and the outer peripheral surface of the fourth rotating member 125.
[0063] Please see Figure 5 and Figure 9 The first decorative cover 15 also includes a first body 152 and a first skirt 154 connected to the first body 152. The first skirt 154 is bent relative to the first body 152 toward the first rotating member 114. The first body 152 is disposed on the first top surface 1127, and the first skirt 154 is attached to the first side surface 1129a. In this way, the first decorative cover 15 can be limited along the axial direction, increasing the connection strength between the first decorative cover 15 and the first rotating member 11.
[0064] The second decorative cover 16 also includes a second body 162 and a second skirt 164 connected to the second body 162. The second skirt 164 is bent relative to the second body 162 toward the direction of the third rotating member 123. This allows for axial positioning of the second decorative cover 16, increasing the connection strength between the second decorative cover 16 and the second rotating assembly 12. In this embodiment, the first decorative cover 15 and the second decorative cover 16 can be manufactured by stamping and bending. In other embodiments, the first decorative cover 15 and the second decorative cover 16 can also be formed by injection molding, die casting, or profiles.
[0065] Please continue reading. Figure 1 , Figure 3 and Figure 8In this embodiment, the hinge device 10 further includes a wear-resistant ring 18, which is sleeved on the rotating shaft 13 and located between the first rotating arm 112 and the second rotating arm 121. By providing the wear-resistant ring 18 between the first rotating arm 112 and the second rotating arm 121, the first rotating arm 112 and the second rotating arm 121 can be separated, preventing the first rotating arm 112 and the second rotating arm 121 from rubbing against each other during rotation, reducing wear on the first rotating arm 112 and the second rotating arm 121, and preventing abnormal noise from the first rotating arm 112 and the second rotating arm 121 during rotation. In this embodiment, the wear-resistant ring 18 is made of a metallic material, such as stainless steel, titanium alloy, or other wear-resistant alloys. In other embodiments, the wear-resistant ring 18 can also be made of wear-resistant ceramics, such as alumina ceramics or silicon nitride ceramics; the wear-resistant ring 18 can also be made of other polymeric wear-resistant materials.
[0066] In summary, the hinge device 10 provided by the present invention includes a first rotating assembly 11 and a second rotating assembly 12. The first rotating assembly 11 includes a first rotating arm 112, a first rotating member 114 and a second rotating member 116. The first end face 1122 of the first rotating arm 112 is welded to the outer peripheral surface of the first rotating member 114, and the second end face 1124 is welded to the outer peripheral surface of the second rotating member 116. The second rotating assembly 12 includes a second rotating arm 121, a third rotating member 123 and a fourth rotating member 125. The first rotating arm 112 is rotatably connected to the second rotating arm 121. The third end face 1211 of the second rotating arm 121 is welded to the outer peripheral surface of the third rotating member 123, and the fourth end face 1213 is welded to the outer peripheral surface of the fourth rotating member 125. This invention welds the first end face 1122 of the first rotating arm 112 to the outer peripheral surface of the first rotating member 114, the second end face 1124 to the outer peripheral surface of the second rotating member 116, the third end face 1211 of the second rotating arm 121 to the outer peripheral surface of the third rotating member 123, and the fourth end face 1213 to the outer peripheral surface of the fourth rotating member 125. This eliminates the need for opening holes at the ends of the first rotating arm 112 and the second rotating arm 121, allowing the outer diameters of the first rotating member 114, the second rotating member 116, the third rotating member 123, and the fourth rotating member 125 to be designed to be larger without compromising the strength of the first rotating arm 112 and the second rotating arm 121. As a result, the hinge device 10 is suitable for high-load-bearing environments and does not produce abnormal noise.
[0067] Second Embodiment Please see Figure 10 and Figure 11 The hinge device 20 provided in this embodiment has a structure that is generally the same as that of the hinge device 10 in the first embodiment. The difference lies in the structure of the first rotating arm 212 and the second rotating arm 221.
[0068] The first rotating arm 212 includes a first arm 2121, a second arm 2123, and a first bushing 2125. The first arm 2121 is welded between the first bushing 2125 and the first rotating member 214, and the second arm 2123 is welded between the first bushing 2125 and the second rotating member 216. That is, the first bushing 2125 is welded between the first arm 2121 and the second arm 2123. In other words, the first rotating arm 212 in this embodiment has a three-section structure, with the first arm 2121 and the second arm 2123 welded to both radially opposite sides of the first bushing 2125.
[0069] The second rotating arm 221 includes a third arm 2211, a fourth arm 2213, and a second bushing 2215. The first bushing 2125 is coaxially arranged with the second bushing 2215. The third arm 2211 is welded between the second bushing 2215 and the third rotating member 223, and the fourth arm 2213 is welded between the second bushing 2215 and the fourth rotating member 225. That is, the second bushing 2215 is welded between the third arm 2211 and the fourth arm 2213. In this embodiment, the second rotating arm 221 has a three-section structure, with the third arm 2211 and the fourth arm 2213 welded to both radial sides of the second bushing 2215.
[0070] The hinge device 20 also includes a rotating shaft 23, which passes through the first bushing 2125 and the second bushing 2215, so that the first rotating arm 212 and the second rotating arm 221 can be rotatably connected.
[0071] The hinge assembly 20 also includes a first sleeve 25 and a second sleeve 27, both of which are fitted onto the rotating shaft 23 and positioned at opposite ends of the second bushing 2215. The first sleeve 25 and the second sleeve 27 are made of plastic. By providing the first sleeve 25 and the second sleeve 27, the rotating shaft 23 and the second bushing 2215 are separated by the first sleeve 25 and the second sleeve 27. Since both the first sleeve 25 and the second sleeve 27 are made of plastic, wear on the hinge assembly 20 during rotation can be reduced.
[0072] Specifically, the first sleeve 25 includes a sleeve portion 251 and an isolation portion 253 connected axially. Both the sleeve portion 251 and the isolation portion 253 are cylindrical structures. The inner diameter of the sleeve portion 251 is equal to the inner diameter of the isolation portion 253, and the outer diameter of the sleeve portion 251 is smaller than the outer diameter of the isolation portion 253. The sleeve portion 251 and the isolation portion 253 are coaxially arranged. The sleeve portion 251 is disposed inside the second bushing 2215, and the isolation portion 253 is disposed between the first bushing 2125 and the second bushing 2215 to separate the first bushing 2125 and the second bushing 2215.
[0073] The structure of the second sleeve 27 is the same as that of the first sleeve 25. The difference is that the orientation of the second sleeve 27 is opposite to that of the first sleeve 25.
[0074] Since the hinge device 20 provided in this embodiment has a structure that is roughly the same as the hinge device 10 in the first embodiment, the hinge device 20 in this embodiment has the same technical effect as the hinge device 10 in the first embodiment. That is, the hinge device 20 can also be used in high load-bearing environments and will not produce abnormal noise.
[0075] Please see Figure 3 , Figure 8 and Figure 12 The present invention also provides a method for manufacturing a hinge device 10, comprising the steps of: S10: Weld the first end face 1122 of the first rotating arm 112 to the outer peripheral surface of the first rotating member 114, and weld the second end face 1124 of the first rotating arm 112 to the outer peripheral surface of the second rotating member 116 to form the first rotating assembly 11; S20: Weld the third end face 1211 of the second rotating arm 121 to the outer peripheral surface of the third rotating member 123, and weld the fourth end face 1213 of the second rotating arm 121 to the outer peripheral surface of the fourth rotating member 125 to form the second rotating assembly 12. S30: The rotating shaft 13 is inserted through the first rotating arm 112 and the second rotating arm 121 along the axial direction of the first rotating member 114.
[0076] In this embodiment, the first step is S10, that is, to manufacture the first rotating component 11; then the next step is S20, that is, to manufacture the second rotating component 12; and then the next step is S30, that is, to enable the first rotating component 11 and the second rotating component 12 to be rotatably connected.
[0077] In other embodiments, the manufacturing method of the latch structure 1 may be to first perform step S20, then step S10, and finally step S30.
[0078] Before manufacturing each part, the molds and equipment to be used need to be debugged to improve the yield of each part and reduce the probability of equipment failure.
[0079] In one embodiment, the manufacturing method further includes: Multiple first rotating pieces 1129 and multiple second rotating pieces 1215 are formed by stamping; Multiple first rotating pieces 1129 are stacked and arranged, and a first rotating arm 112 is formed by riveting or welding. Multiple second rotating plates 1215 are stacked and arranged, and formed into a second rotating arm 121 by riveting or welding.
[0080] Specifically, multiple identical metal sheets are stacked on a specific stamping die and stamped to form multiple first rotating pieces 1129. Multiple identical metal sheets are stacked on another stamping die and stamped to form multiple second rotating pieces 1215.
[0081] Then, multiple first rotating pieces 1129 are stacked and arranged, and the edges of the multiple first rotating pieces 1129 are aligned. They are then fixedly connected by riveting or welding to form the first rotating arm 112.
[0082] Then, multiple second rotating pieces 1215 are stacked and arranged, and the edges of the multiple second rotating pieces 1215 are aligned. They are then fixedly connected by riveting or welding to form the second rotating arm 121.
[0083] In one embodiment, the manufacturing method further includes: A first decorative cover 15 and a second decorative cover 16 are provided, with the first decorative cover 15 disposed on the outer surface of the first rotating assembly 11 and the second decorative cover 16 disposed on the outer surface of the second rotating assembly 12.
[0084] The first decorative cover 15 and the second decorative cover 16 can be made by stamping and bending, or by injection molding, die casting or profile processing.
[0085] The manufacturing method of the hinge device 10 of the present invention involves welding the first end face 1122 of the first rotating arm 112 to the outer peripheral surface of the first rotating member 114, the second end face 1124 to the outer peripheral surface of the second rotating member 116, the third end face 1211 of the second rotating arm 121 to the outer peripheral surface of the third rotating member 123, and the fourth end face 1213 to the outer peripheral surface of the fourth rotating member 125. This eliminates the need for opening holes at the ends of the first rotating arm 112 and the second rotating arm 121, allowing for the design of larger outer diameters of the first rotating member 114, the second rotating member 116, the third rotating member 123, and the fourth rotating member 125 without compromising the strength of the first rotating arm 112 and the second rotating arm 121. Consequently, the hinge device 10 is suitable for high-load-bearing environments and does not produce abnormal noise.
[0086] In this invention, unless otherwise explicitly specified or limited, the term "assembly" and similar terms should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection or an indirect connection via an intermediate medium; it can be a connection within two components; it can be merely surface contact; or it can be a surface contact connection via an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0087] Furthermore, the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as referring to specific or particular structures. The description of "some embodiments" means that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this invention, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate different embodiments or examples described in this invention, as well as the features of different embodiments or examples.
[0088] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.
Claims
1. A hinge device, characterized in that, include: A first rotating assembly, comprising a first rotating arm, a first rotating member, and a second rotating member, wherein the first rotating arm includes opposing first and second end faces, the first end face is welded to the outer peripheral surface of the first rotating member, and the second end face is welded to the outer peripheral surface of the second rotating member; and The second rotating assembly includes a second rotating arm, a third rotating member, and a fourth rotating member. The first rotating arm is rotatably connected to the second rotating arm. The second rotating arm includes a third end face and a fourth end face that are opposite each other. The third end face is welded to the outer peripheral surface of the third rotating member, and the fourth end face is welded to the outer peripheral surface of the fourth rotating member.
2. The hinge device according to claim 1, characterized in that, The first end face is a concave arc surface, the outer peripheral surface of the first rotating component is a cylindrical surface, and the curvature of the first end face is the same as the curvature of the outer peripheral surface of the first rotating component.
3. The hinge device according to claim 2, characterized in that, The first rotating arm further includes a first top surface and a first bottom surface, and both the first end surface and the second end surface are connected between the first top surface and the first bottom surface, wherein: The connection between the first end face and the first top face is provided with a rounded corner; and / or, the connection between the first end face and the first bottom face is provided with a rounded corner; and / or, the arc angle corresponding to the first end face is θ, 60°≤θ≤90°.
4. The hinge device according to claim 1, characterized in that, The first rotating arm includes a plurality of stacked first rotating plates, and the opposite ends of each first rotating plate are respectively welded to the first rotating member and the second rotating member; the second rotating arm includes a plurality of stacked second rotating plates, and the opposite ends of each second rotating plate are respectively welded to the third rotating member and the fourth rotating member.
5. The hinge device according to claim 4, characterized in that, The first rotating plate includes a first side surface and a second side surface opposite to each other along the thickness direction of the first rotating plate. The first side surface is provided with a protrusion, and the second side surface is provided with a groove. The position of the groove corresponds to the position of the protrusion, and the height of the protrusion is equal to the depth of the groove.
6. The hinge device according to claim 1, characterized in that, The first rotating arm also has a first shaft hole extending axially along the first rotating member, the first shaft hole being located between the first end face and the second end face; the second rotating arm also has a second shaft hole extending axially along the third rotating member, the second shaft hole being located between the third end face and the fourth end face; the hinge device further includes a rotating shaft passing through the first shaft hole and the second shaft hole.
7. The hinge device according to claim 1, characterized in that, The number of first rotating arms is two, and the two first rotating arms are spaced apart along the axial direction of the first rotating member. Both first rotating arms are connected between the first rotating member and the second rotating member, and the second rotating arm is disposed between the two first rotating arms.
8. The hinge device according to claim 1, characterized in that, The hinge device further includes a first decorative cover and a second decorative cover, the first decorative cover being disposed on the outer surface of the first rotating component and the second decorative cover being disposed on the outer surface of the second rotating component.
9. The hinge device according to claim 1, characterized in that, The first rotating arm includes a first arm, a second arm, and a first bushing. The first arm is welded between the first bushing and the first rotating component. The second arm is welded between the first bushing and the second rotating component. The second rotating arm includes a third arm, a fourth arm, and a second bushing. The first bushing and the second bushing are coaxially arranged. The third arm is welded between the second bushing and the third rotating component. The fourth arm is welded between the second bushing and the fourth rotating component. The hinge device also includes a rotating shaft that passes through the first bushing and the second bushing.
10. A method for manufacturing the hinge device as claimed in claim 1, characterized in that, The hinge assembly further includes a rotating shaft, and the manufacturing method includes: The first end face of the first rotating arm is welded to the outer peripheral surface of the first rotating component, and the second end face of the first rotating arm is welded to the outer peripheral surface of the second rotating component to form the first rotating assembly. The third end face of the second rotating arm is welded to the outer peripheral surface of the third rotating member, and the fourth end face of the second rotating arm is welded to the outer peripheral surface of the fourth rotating member to form the second rotating assembly. The rotating shaft is inserted through the first rotating arm and the second rotating arm along the axial direction of the first rotating member.