Damped rotating assembly and hinge mechanism

Abstract

The utility model belongs to hinge field and provide a kind of damping rotary assembly and hinge mechanism, damping rotary assembly includes pivot and clasp, pivot includes first shaft section, and the outer circumferential surface of first shaft section is equipped with a plurality of recess along circumference, and recess extends along the axial direction of pivot;Clasp includes fixed part and gripping part, and gripping part is bent and extended out by fixed part, and gripping part is annular with notch and is clamped on first shaft section, and the inner circumferential surface of gripping part has compression surface, and along the extension direction of gripping part, the distance of compression surface from pivot axis gradually decreases, and compression surface can be disengaged with recess engagement. The damping rotary assembly in the utility model generates large friction resistance moment, and when clasp or pivot appears abrasion, damping attenuation is very small, in addition, user operation can feedback delicate operation shock feeling.

Description

Technical Field

[0001] This utility model belongs to the field of hinge technology, specifically relating to a damped rotating component and hinge mechanism. Background Technology

[0002] A hinge is a mechanical device that connects two objects and allows them to rotate relative to each other about a fixed axis. In a rotating arm structure, the hinge plays a central role, providing both smooth rotation and sufficient resisting torque (or holding force, damping) at specific locations to support the weight of the rotating arm and its load and keep it suspended stably (e.g., laptop screens, industrial robotic arms, medical device cantilever arms).

[0003] Most mainstream hinges currently use an interference fit between a latch and a pivot, relying on the friction between their contact surfaces to provide damping. The maximum static friction generated by a single latch is limited, sometimes insufficient for demanding applications. To increase torque, multi-latch stacking structures are used in some scenarios, increasing the number of latches to increase damping. However, the torque provided by this design is also relatively limited, making it difficult to meet the needs of applications with high torque requirements. This not only increases the number of parts and assembly complexity, but the frictional resistance generated by a conventional interference fit is also prone to attenuation with frequent starts and stops or vibrations, resulting in insufficient long-term stability and a risk of torque failure. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies, this utility model provides a damped rotating component and hinge mechanism, which aims to solve the technical problem that existing hinge structures are difficult to balance high torque and stability.

[0005] To achieve the above objectives, this utility model provides a damped rotating assembly, comprising: The rotating shaft includes a first shaft segment, and the outer circumferential surface of the first shaft segment is provided with a plurality of grooves along the circumferential direction, the grooves extending along the axial direction of the rotating shaft; The hook includes a fixing part and a gripping part. The gripping part extends out of the fixing part by bending. The gripping part is a ring with a notch and is clamped on the first shaft section. The inner circumferential surface of the gripping part has a pressing surface. Along the extension direction of the gripping part, the distance between the pressing surface and the axis of rotation gradually decreases. The pressing surface can be disengaged from the groove.

[0006] Preferably, the part of the pressing surface closest to the notch is the pressing end, and the part of the pressing surface closest to the fixing part is the connecting end. There is a transition end between the pressing end and the connecting end. The distance between the pressing surface and the axis of the rotating shaft remains unchanged from the connecting end to the transition end, gradually decreases from the transition end to the pressing end, or gradually decreases from the connecting end to the transition end.

[0007] Preferably, the inner side of the gripping part is provided with multiple teeth, the pressing surface is the top surface of the teeth, and the teeth can be disengaged and engaged in the groove.

[0008] Preferably, multiple hooks are stacked along the axial direction of the rotating shaft, and the fixing parts of all hooks are located at the same angular position; the notches of all hooks are located at the same angular position, or the notches of two sets of hooks are located at different angular positions and have different numbers, or the notches of two sets of hooks are located at different angular positions and have the same number.

[0009] Preferably, the gripping parts extend from opposite sides of the fixing parts, and a notch is formed between the ends of the two gripping parts; Alternatively, the gripping part extends from one side of the fixed part, forming a gap between the beginning and end of the gripping part.

[0010] Preferably, the rotating shaft further includes a second shaft section, the outer peripheral surface of which is provided with a knurled portion; And / or, the inner circumferential surface of the gripping part also has a concave stress adjustment surface.

[0011] This utility model also provides a hinge mechanism, including: Damped rotating assembly of any of the above; The first housing and the second housing are hinged together by a pivot. The first housing is fixedly engaged with the fixing part of the hook, and the second housing is fixedly engaged with the pivot.

[0012] Preferably, the first housing is provided with a pivot mounting hole and a limiting snap-fit ​​groove. The limiting snap-fit ​​groove is connected to the pivot mounting hole and is located on one side of the radial direction of the pivot mounting hole. The first shaft section passes through the pivot mounting hole, and the fixing part of the hook extends into the limiting snap-fit ​​groove.

[0013] Preferably, the hinge mechanism includes a limiting pin, which is inserted into the first housing and located between the first housing and the fixing part of the hook to press the fixing part against the first housing; the limiting pin is provided with a cap, which axially presses against the fixing part of the hook.

[0014] Preferably, the first housing and the second housing are connected by at least one pair of damped rotating components, the fixing parts of all the hooks are located at the same angular position, and the notch of the hook of one of the damped rotating components is at a different angular position than the notch of the hook of the other of the damped rotating components.

[0015] Through the above technical solution, the damped rotating assembly provided in this utility model embodiment has the following beneficial effects: This utility model's hook is always firmly held onto the rotating shaft. Because the rotating shaft has multiple grooves, firstly, the pressing surface always presses against the rotating shaft and can be pressed into the grooves. As the hook rotates relative to the rotating shaft, the pressing surface can engage with each groove on the rotating shaft one by one. That is, as the hook rotates relative to the rotating shaft, the pressing surface will first engage with one groove, then abut against the outer teeth, then engage with the next groove, and so on. Through the engagement of the pressing surface and the grooves, the resistance torque between the hook and the rotating shaft is greater than the frictional resistance torque generated by a conventional interference fit. Secondly, the interference fit ensures that all the pressing surfaces on the inner circumference of the gripping part are always pressed against the rotating shaft and slightly pressed into the grooves. When the hook rotates relative to the rotating shaft, the frictional torque generated by the pressing surface abutting against the outer teeth of the rotating shaft has a normal component, which is greater than the frictional resistance torque of conventional sliding friction. Furthermore, the normal resistance generated by the hook abutting against the outer teeth of the rotating shaft reduces wear attenuation compared to conventional sliding friction, thereby improving durability and stability. On the other hand, by having the clamping surface of the hook engage with the groove one by one, you can feel the vibration when they engage during rotation, which improves the user experience.

[0016] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0017] The accompanying drawings are provided to illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This utility model presents a damped rotating assembly, showing the assembly structure of a single hook and a rotating shaft. Figure 2 yes Figure 1 The cross-sectional view at point AA shows a locking structure that engages with a pivot. Figure 3 yes Figure 2 A 3D view of the hook; Figure 4 yes Figure 1 The cross-sectional view at point AA shows another type of hook and shaft mating structure; Figure 5 yes Figure 4 A 3D view of the hook; Figure 6 This is a perspective view of a damped rotating assembly according to an embodiment of the present invention, showing the assembly structure of multiple Y-shaped toothed hooks and a rotating shaft; Figure 7 yes Figure 6 A structural diagram of the latch in the proposed damped rotating assembly; Figure 8This is a perspective view of a damped rotating assembly according to an embodiment of the present invention, showing an assembly diagram of multiple question mark-shaped toothed hooks and a rotating shaft; Figure 9 yes Figure 8 A structural diagram of the latch in the proposed damped rotating assembly; Figure 10 yes Figure 8 Exploded view; Figure 11 This is a CAE analysis diagram of damping when a toothed shaft is engaged with a Y-type toothed hook; Figure 12 This is a CAE analysis diagram of the damping when a toothed shaft is engaged with a Y-type toothless hook; Figure 13 This is a CAE analysis diagram of the damping when the toothed shaft is engaged with the Y-type toothed hook; Figure 14 This is a CAE analysis diagram of damping when a toothless rotating shaft is engaged with a question mark-shaped toothless hook; Figure 15 This is a CAE analysis diagram of damping when a toothed shaft is engaged with a question mark-shaped toothless hook. Figure 16 This is a CAE analysis diagram of the damping when the toothed shaft is engaged with the question mark-shaped toothed hook. Figure 17 This is an exploded structural diagram of a hinge mechanism proposed in an embodiment of the present invention, wherein the latch is Y-shaped; Figure 18 This is an exploded structural diagram of a hinge mechanism proposed in an embodiment of the present invention, wherein the hook is question mark shaped; Figure 19 This is an exploded structural diagram of a hinge mechanism proposed in an embodiment of the present invention, wherein the latch is Y-shaped; Figure 20 This is an exploded structural diagram of a hinge mechanism proposed in an embodiment of this utility model, wherein the hook is in the shape of a question mark.

[0018] Explanation of reference numerals in the attached figures 1. Rotating shaft; 11. First shaft section; 11a. External toothed part; 11b. Groove; 12. Second shaft section; 2. Hook; 21. Fixing part; 22. Gripping part; 221. Notch; 222. Pressing surface; 223. Stress adjustment surface; 22-1. Pressing end; 22-2. Connecting end; 22-3. Transition end; 22a. Locking tooth; 22b. Tooth bottom; 3. First housing; 31. Pivoting mounting hole; 32. Limiting locking groove; 4. Second housing; 5. Limiting pin; 51. Shaft cap. Detailed Implementation

[0019] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0020] The damped rotating assembly of this utility model is described below with reference to the accompanying drawings.

[0021] This utility model discloses a damped rotating component, such as Figure 1-8 As shown, the damped rotating assembly includes a rotating shaft 1 and a latch 2.

[0022] The rotating shaft 1 includes a first shaft section 11. The outer peripheral surface of the first shaft section 11 is provided with a plurality of external teeth 11a and a plurality of grooves 11b along the circumferential direction. The grooves 11b are formed between two adjacent external teeth 11a. The first shaft section 11 is used to install the hook 2.

[0023] The hook 2 includes a fixing part 21 and a gripping part 22. The fixing part 21 is used for installing and fixing the hook 2. The gripping part 22 extends out from the fixing part 21 by bending. The gripping part 22 is annular with a notch 221 and is sleeved on the first shaft segment 11. The inner circumferential surface of the gripping part 22 has a pressing surface 222. Along the extending direction of the gripping part 22, the distance between the pressing surface 222 and the axis of the rotating shaft 1 gradually decreases. The pressing surface 222 can be disengaged and engaged in the groove 11b. The gripping part 22 is connected to the rotating shaft 1.

[0024] Since the gripping part 22 is annular with a notch 221 and is sleeved on the first shaft section 11, the inner circumferential surface of the gripping part 22 has a pressing surface 222. Along the extending direction of the gripping part 22, the distance between the pressing surface 222 and the axis of the rotating shaft 1 gradually decreases. Multiple grooves 11b are provided on the rotating shaft 1. The pressing surface 222 can be disengaged and engaged in the grooves 11b. On the one hand, the pressing surface 222 always presses against the rotating shaft 1 and can be pressed into the grooves 11b. When the hooks 2 are opposite As the shaft 1 rotates, the pressing surface 222 engages with the grooves 11b on the shaft 1 one by one. That is, as the hook 2 rotates relative to the shaft 1, the pressing surface 222 first engages with one of the grooves 11b, then abuts against the outer teeth 11a, and then engages with the next groove 11b, and so on. Through the engagement of the pressing surface 222 with the grooves 11b, the resistance torque between the hook 2 and the shaft 1 is greater than the frictional resistance torque generated by a conventional interference fit. On the other hand, as the distance between the pressing surface 222 and the axis of the shaft 1 gradually decreases, the pressing surface 222 can disengage and engage in the grooves 11b, ensuring that all the pressing surfaces 222 on the inner circumference of the gripping part 22 are always pressed against the shaft 1 and slightly pressed into the grooves 11b. When the hook 2 rotates relative to the shaft 1, the frictional torque generated by the contact between the pressing surface 222 and the outer teeth 11a of the shaft 1 has a normal component, which is greater than the frictional resistance torque during conventional sliding friction. On the other hand, the normal resistance generated by the contact between the hook 2 and the outer tooth 11a of the rotating shaft 1 reduces wear and tear compared to conventional sliding friction, thereby improving durability and stability. Furthermore, the engagement of the clamping surface 222 of the hook 2 with each groove 11b provides a noticeable vibration during rotation, enhancing the user experience.

[0025] Specifically, such as Figure 1 , Figure 2 and Figure 4As shown, the cross-section of the rotating shaft 1 is circular, that is, the groove 11b is formed on a regular cylindrical shaft, while the inner circumferential surface of the gripping part 22 is an irregular arc shape. The part of the gripping part 22 closest to the notch 221 is the pressing end 22-1, and the part of the inner circumferential surface of the gripping part 22 closest to the fixing part 21 is the connecting end 22-2. There is a transition end 22-3 between the pressing end 22-1 and the connecting end 22-2. The inner diameter of the gripping part 22 is smaller than the radius of the tooth root circle at the bottom of the groove 11b of the rotating shaft 1, so that... The gripping part 22 can always clamp the rotating shaft 1. The inner diameter of the gripping part 22 gradually decreases from the connecting end 22-2 to the pressing end 22-1 along its extension direction. This decrease can be achieved by: the inner diameter gradually decreasing from the connecting end 22-2 to the pressing end 22-1; or by having a transition end 22-3 between the pressing end 22-1 and the connecting end 22-2, where the inner diameter remains unchanged from the connecting end 22-2 to the transition end 22-3, and gradually decreases from the transition end 22-3 to the pressing end 22-1. The inner diameter of the inner circumferential surface of the gripping part 22 refers to the distance from the inner circumferential surface to the axis of the rotating shaft 1. This gradual decrease in inner diameter can be linear and continuous, or it can be a step-like discontinuous decrease. Preferably, the inner diameter of the gripping part 22 gradually decreases from the transition end 22-3 to the pressing end 22-1, and the central angle corresponding to the arc from the center of the notch 221 to the transition end 22-3 is 90 degrees.

[0026] Furthermore, such as Figure 7 and Figure 9 As shown, the gripping part 22 may be provided with a plurality of teeth 22a on the inner side. The teeth 22a protrude from the inner circumferential surface of the gripping part 22, and there is a tooth bottom 22b between two adjacent teeth 22a. The teeth 22a can be disengaged and engaged in the groove 11b.

[0027] The tip circle radius of the locking tooth 22a is smaller than the radius of the bottom of the groove 11b of the rotating shaft 1. From the clamping end 22-1 to the connecting end 22-2, and from the first locking tooth 22a to the last locking tooth 22a, the tip circle radius gradually increases. Alternatively, from the first locking tooth 22a to a certain locking tooth 22a located at the transition end 22-3, the tip circle radius gradually increases, while the tip circle radius of the remaining locking teeth 22a remains unchanged. Preferably, the central angle corresponding to the arc from the center of the notch 221 to the transition end 22-3 is 90 degrees, and the tip circle radius gradually increases from the first locking tooth 22a to the locking tooth 22a located at the transition end 22-3, while the tip circle radius of the remaining locking teeth 22a remains unchanged.

[0028] In this embodiment, as the hook 2 rotates relative to the rotating shaft 1, the locking teeth 22a insert into the groove 11b and then abut against the corresponding outer teeth 11a, before inserting into the next groove 11b. Thus, there is not only frictional force between the hook 2 and the rotating shaft 1, but also a pressing force when the locking teeth 22a and the outer teeth 11a abut. The normal component of this pressing force further hinders the rotation of the hook 2 relative to the rotating shaft 1. When the locking teeth 22a engage with the groove 11b, it provides greater rotational resistance compared to a conventional interference fit. Because the proportion of sliding friction generated between the hook 2 and the rotating shaft 1 is reduced, the impact of contact surface wear on the overall rotational resistance is reduced, thereby improving the durability of the entire rotating assembly. Furthermore, when the rotating shaft 1 increases rotational resistance by stacking multiple hooks 2, the number of hooks 2 can be appropriately reduced, allowing for greater rotational resistance to be provided with fewer hooks 2.

[0029] Meanwhile, the engagement of the locking teeth 22a with multiple grooves 11b achieves both fixed-point and multi-point engagement. Therefore, when the operator rotates the shaft 1 and the locking hook 2 relative to each other, a slight vibration from the engagement can be felt, enhancing the operational experience and enabling multi-level hovering. Generally, the number of locking teeth 22a is no greater than the number of grooves 11b.

[0030] Furthermore, such as Figure 6 , Figure 8 As shown, multiple hooks 2 are stacked along the axial direction of the rotating shaft 1, and the fixing parts 21 of all hooks 2 are located at the same angular position; the notches 221 of all hooks 2 are located at the same or different angular positions.

[0031] Specifically, the gripping part 22 extends from opposite sides of the fixing part 21, having two curved portions and two pressing ends 22-1. A notch 221 is formed between the two pressing ends 22-1. The two curved portions can be of the same length, such that the angle of the notch 221 is opposite to the angle of the fixing part 21. Figure 7 The shape resembles a Y; the lengths of the two curved sections can also be different, so that the angle of the notch 221 is not opposite to the angle of the fixing part 21, and the notch 221 is biased towards one side of the fixing part 21. Alternatively, the gripping part 22 extends from one side of the fixing part 21, that is, it has only one curved section and one pressing end 22-1, and the notch 221 is formed between the connecting end 22-2 of the gripping part 22 and the fixing part 21 and the pressing end 22-1. In this case, the position of the notch 221 is obviously not opposite to the position of the fixing part 21, as shown in the figure. Figure 9 The shape resembles a question mark.

[0032] When the hook 2 is Y-shaped, the two curved parts of the hook 2 are identical and symmetrical, so that the resistance torque generated by the hook 2 when rotating clockwise or counterclockwise relative to the axis of rotation 1 is the same. However, when the hook 2 is asymmetrical with the notch 221 offset to one side, the resistance torque generated by the hook 2 when rotating clockwise or counterclockwise relative to the axis of rotation 1 is different. In this case, all hooks 2 can be divided into multiple groups according to the position of the notch 221. Each group includes several hooks 2 that are sequentially adjacent and whose notches 221 are located at the same angular position. For example, for two groups of hooks 2, such as... Figure 10 As shown, by positioning one set of multiple hooks 2 at one angular position and another set of multiple hooks 2 at another angular position, the difference in resistance torque generated during forward and reverse rotation can be reduced. Furthermore, when the notches 221 of the two sets of hooks 2 are in opposite positions but have the same number, the torque generated during forward and reverse rotation can also be made the same.

[0033] The number of hooks 2 within each group is adjustable, allowing for adjustments to the friction torque as needed. The angle of the hooks 2 can be set in both directions to provide appropriate friction torque according to usage requirements.

[0034] In conventional implementations, the smooth outer surface of the rotating shaft 1 engages with the hooks 2, whose inner diameters are consistent across all parts of the inner circumference. This results in limited frictional resistance, which is easily attenuated by wear. The damped rotating assembly of this embodiment provides a greater resistance torque.

[0035] Please refer to Figures 11 to 16 , Figures 11 to 16 The CAE simulation analysis diagram of the rotational damping of a single hook 2 and shaft 1 shows the resistance situation experienced by shaft 1.

[0036] When the hook 2 is Y-shaped, analyze the average resistance torque experienced by the rotating shaft 1 when it rotates in one direction, such as... Figures 11 to 13 The latches 2 of the damped rotating components are all Y-shaped. Figures 11 to 13 The diameter / outer diameter of each of the rotating shafts 1 is the same. Figure 11 The inner diameter of hook 2 is... Figure 12 , Figure 13 The minimum inner diameter of hook 2 is the same.

[0037] Figure 11 The torque force analysis of a conventional damped rotating assembly is shown. The conventional damped rotating assembly includes a rotating shaft 1 with a smooth outer circumference and a hook 2 with a smooth inner circumference. The average resistance generated by the rotation of the hook 2 relative to the rotating shaft 1 is 620 N·mm.

[0038] Figure 12This paper presents a torque force analysis of a damped rotating assembly according to an embodiment of the present invention. The damped rotating assembly includes a rotating shaft 1 with a groove 11b on its outer circumference and a hook 2 with a clamping end 22-1 on its inner circumference. The average resistance generated by the hook 2 rotating relative to the rotating shaft 1 is 626 N·mm. Furthermore, the resistance value changes in a wave-like pattern, with the peak corresponding to the groove 11b, indicating that the engagement resistance generated at the groove 11b increases significantly with rotation.

[0039] Figure 13 This invention presents a torque force analysis of a damped rotating assembly according to another embodiment of the present invention. The damped rotating assembly includes a rotating shaft 1 with a groove 11b on its outer circumferential surface and a hook 2 with a pressing end 22-1 and a locking tooth 22a on its inner circumferential surface. The average resistance generated by the hook 2 rotating relative to the rotating shaft 1 is 685 N·mm, which is greater than the resistance generated by the locking tooth 22a with a smooth inner circumferential surface.

[0040] When the hook 2 is shaped like a question mark, analyze the average resistance torque experienced by the rotating shaft 1 when it rotates clockwise and counterclockwise, such as... Figures 14 to 16 The hooks 2 for the damped rotating components are all similar to question mark shapes. Figures 14 to 16 The diameter / outer diameter of each of the rotating shafts 1 is the same. Figure 14 The inner diameter of hook 2 is... Figure 15 , Figure 16 The minimum inner diameter of hook 2 is the same.

[0041] Figure 14 This illustrates the torque-force analysis of a conventional damped rotating assembly. The assembly includes a smooth outer circumferential shaft 1 and a smooth inner circumferential hook 2. Figure 14 It can be seen that when the hook 2 rotates clockwise relative to the rotating shaft 1, the average resistance generated is 430 N·mm, and when it rotates counterclockwise, the average resistance generated is 597 N·mm.

[0042] Figure 15 This embodiment illustrates the force analysis when the toothed shaft 1 engages with the question mark-shaped toothed hook 2. The damped rotating assembly includes a shaft 1 with a groove 11b on its outer circumference and a hook 2 with a pressing end 22-1 on its inner circumference. Figure 15 It can be seen that when the hook 2 rotates clockwise relative to the rotating shaft 1, the average resistance generated is 450 N·mm, and when it rotates counterclockwise, the average resistance generated is 607 N·mm.

[0043] Figure 16 This embodiment illustrates the force analysis when the toothed shaft 1 engages with the question mark-shaped toothless hook 2. The damped rotating assembly includes a shaft 1 with a groove 11b on its outer circumference and a hook 2 with a pressing end 22-1 and locking teeth 22a on its inner circumference. Figure 16It can be seen that when the hook 2 rotates clockwise relative to the rotating shaft 1, the average resistance generated is 460 N·mm, and when it rotates counterclockwise, the average resistance generated is 700 N·mm.

[0044] Therefore, regardless of whether the hook 2 is Y-shaped or question mark-shaped, setting a groove 11b on the rotating shaft 1 and setting a pressing end 22-1 in the hook 2 can increase the rotational resistance. Setting a groove 11b on the rotating shaft 1 and setting a pressing end 22-1 and a locking tooth 22a in the hook 2 can further increase the rotational resistance.

[0045] To machine the groove 11b on the outer circumferential surface of the first shaft segment 11, a knurling process can be used to machine a unidirectional parallel texture on the outer circumferential surface of the first shaft segment 11 to form the groove 11b. It should be noted that if the inner circumference of the hook 2 is designed as a regular circle, while the cross-sectional profile of the rotating shaft 1 is designed as an irregular circle to achieve the engagement between the hook 2 and the shaft, the machining of the shaft is more difficult than the machining of the hook 2, which will produce more machining errors and make it difficult to achieve uniform engagement. This utility model uses the method of machining the groove 11b on a regular circular shaft and designing the inner side of the hook 2 as an irregular arc profile, that is, to achieve gradual engagement through the pressing end 22-1 inside the hook 2, which makes the machining easier to achieve and the machining accuracy higher, which is conducive to providing stable torque.

[0046] Preferably, the number of teeth 22a on the hook 2 is not greater than the number of grooves 11b on the rotating shaft 1. For example... Figure 5 and Figure 7 As shown, for certain application scenarios, the inner side of the hook 2 is provided with multiple teeth 22a. The fixing parts 21 of the stacked hooks 2 can be set to be located at the same angular position, and the notches 221 of the hooks 2 can be aligned and installed so that the notches 221 of the multiple hooks 2 are located at the same angular position. This also allows all the teeth 22a on the hooks 2 to be aligned, so that they can engage synchronously with the groove 11b of the rotating shaft 1, and the engagement cycle is consistent, ensuring the uniformity of the engagement of the teeth 22a.

[0047] like Figure 10 and Figure 18 As shown, for certain application scenarios, the inner side of the hook 2 is provided with multiple teeth 22a, which can set the fixing parts 21 of the stacked hooks 2 to be located at the same angular position, while the notches 221 of some hooks 2 are located at different angular positions from the notches 221 of other hooks 2. When the number of teeth 22a is much smaller than the number of grooves 11b, by staggering the notches 221 of the hooks 2, the teeth 22a on the hooks 2 can be staggered, which can change the engagement cycle and engagement rate of the teeth 22a, thereby producing a more delicate damping feel.

[0048] When the notch 221 of the hook 2 is installed neatly, the hook 2 will generate a biting vibration sensation for every 1° rotation relative to the rotating shaft 1. However, by using a staggered installation method, the hook 2 will generate a biting vibration sensation for every 0.5° rotation, and the triggering frequency of the biting vibration is higher.

[0049] like Figure 1 As shown, the rotating shaft 1 also includes a second shaft section 12. The rotating shaft 1 is inserted into the connected housing through the second shaft section 12. The outer peripheral surface of the second shaft section 12 can also be provided with a knurled part to facilitate fixing with the corresponding housing and to transmit torsional force through the knurled part.

[0050] Furthermore, based on any of the above embodiments, the inner peripheral surface of the gripping part 22 also has a concave stress adjustment surface 223. The stress adjustment surface 223 can guide the deformation of the pressing surface 222 when the hook 2 rotates with the rotating shaft 1, so that the stress distribution of the hook 2 is more uniform and the durability is improved.

[0051] Please refer to Figures 17 to 20 To achieve the above objectives, this utility model also provides a hinge mechanism, including the damped rotating component described above, a first housing 3 and a second housing 4. The first housing 3 and the second housing 4 are hinged together by a pivot 1. The first housing 3 is fixedly engaged with the fixing part 21 of the hook 2, and the second housing 4 is fixedly engaged with the pivot 1.

[0052] When the first housing 3 is operated to drive the hook 2 to rotate relative to the rotating shaft 1 and the second housing 4, the damped rotation assembly can provide greater damping force, reduce the number of parts of the entire mechanism by reducing the number of hooks 2, improve durability, and ensure that the first housing 3 can be stably suspended at any position, while also improving the user's operating feel.

[0053] To facilitate the fixed engagement between the first housing 3 and the hook 2, such as Figure 17 and Figure 18 As shown, in this embodiment, the first housing 3 may be provided with a pivot mounting hole 31 and a limiting snap-fit ​​groove 32, with the limiting snap-fit ​​groove 32 located on the radial side of the pivot mounting hole 31. When the first housing 3 is assembled with the rotating shaft 1, the first shaft segment 11 will pass through the pivot mounting hole 31, the gripping part 22 of the hook 2 will be installed in the pivot mounting hole 31 and clamped on the first shaft segment 11, and the fixing part 21 of the hook 2 will extend into the limiting snap-fit ​​groove 32 and abut against the limiting snap-fit ​​groove 32, thereby realizing the fixed connection between the first housing 3 and the hook 2.

[0054] Of course, in other embodiments, other forms can be used to fix the hook 2 to the first housing 3, such as directly welding or gluing the two together, or using a limiting block or pin to prevent the hook 2 from rotating.

[0055] like Figure 17 and Figure 18 As shown, in this embodiment, the hinge mechanism may include a limiting pin 5, which is axially connected to the first housing 3 and located between the fixing part 21 of the hook 2 and the first housing 3, so as to press the fixing part 21 to the first housing 3 in a direction parallel to the axis of the rotating shaft 1.

[0056] The limiting pin 5 can be used in conjunction with the limiting locking groove 32. That is, after the fixing part 21 of the hook 2 extends into the limiting locking groove 32, the limiting pin 5 extends into the limiting locking groove 32 and is axially connected to the first housing 3. When there is a gap between the fixing part 21 and the groove wall of the limiting locking groove 32, the limiting pin 5 can further limit and lock the fixing part 21 in the locking groove.

[0057] Furthermore, the limiting pin 5 is provided with a cap 51, which is used to limit and abut against the side of the fixing part 21 facing away from the first housing 3. That is, after the limiting pin 5 is installed, the cap 51 and the first housing 3 together limit the two sides of the fixing part 21. Through the cap 51 on the limiting pin 5, the axial limit of the hook 2 can be achieved, preventing the hook 2 from moving axially relative to the first housing 3 and causing the engagement with the rotating shaft 1 to loosen.

[0058] In other embodiments, the first housing 3 and the second housing 4 can be connected by a long rotating shaft 1. The rotating shaft 1 may include multiple first shaft segments 11. By setting hooks 2 on each first shaft segment 11, the rotational damping of the hinge mechanism is increased, and the number and range of mechanical engagement points of the hinge structure are also increased. This not only makes it convenient for the first housing 3 to be firmly suspended at any position, but also ensures that the damping force fed back from each operation is almost the same when the user drives the first housing 3 to rotate at different positions.

[0059] Furthermore, the first housing 3 and the second housing 4 are connected by at least one pair of the damped rotating assemblies, and the fixing part 21 of all the hooks 2 is located at the same angular position. The notch 221 of the hook 2 of one of the damped rotating assemblies is at the same or different angular position as the notch 221 of the hook 2 of the other pair of the damped rotating assemblies.

[0060] like Figure 19 As shown, the first housing 3 and the second housing 4 are connected by two damped rotating assemblies. The damped rotating assemblies adopt a Y-shaped hook 2. The angle position of the hook 2 of the two damped rotating assemblies is the same, that is, the position of the notch 221 is the same.

[0061] like Figure 20As shown, the first housing 3 and the second housing 4 are also connected by two damped rotating components. The damped rotating components use hooks 2 that are similar to question marks. The angles of the hooks 2 of the two damped rotating components are different, that is, the positions of the notches 221 are different. When the number of hooks 2 in the two sets is the same, the resistance received by the first housing 3 and the second housing 4 when they rotate in both directions is the same.

[0062] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0063] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0064] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate 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 specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0065] Although embodiments of the present invention have been described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A damped rotating assembly, characterized in that, include: A rotating shaft (1) includes a first shaft segment (11), the outer peripheral surface of the first shaft segment (11) is provided with a plurality of grooves (11b) along the circumferential direction, and the grooves (11b) extend along the axial direction of the rotating shaft (1). The hook (2) includes a fixing part (21) and a gripping part (22). The gripping part (22) extends out from the fixing part (21) by bending. The gripping part (22) is annular with a notch (221) and is clamped on the first shaft segment (11). The inner circumferential surface of the gripping part (22) has a pressing surface (222). Along the extending direction of the gripping part (22), the distance between the pressing surface (222) and the axis of the rotating shaft (1) gradually decreases. The pressing surface (222) can be disengaged from the groove (11b).

2. The damped rotating assembly according to claim 1, characterized in that, The part of the pressing surface (222) closest to the notch (221) is the pressing end (22-1), and the part of the pressing surface (222) closest to the fixing part (21) is the connecting end (22-2). There is a transition end (22-3) between the pressing end (22-1) and the connecting end (22-2). The distance of the pressing surface (222) from the axis of the rotating shaft (1) remains unchanged from the connecting end (22-2) to the transition end (22-3), gradually decreases from the transition end (22-3) to the pressing end (22-1), or gradually decreases from the connecting end (22-2) to the transition end (22-3).

3. The damped rotating assembly according to claim 1 or 2, characterized in that, The gripping part (22) has multiple teeth (22a) on its inner side. The pressing surface (222) is the top surface of the teeth (22a). The teeth (22a) can be disengaged and engaged in the groove (11b).

4. The damped rotating assembly according to claim 1, characterized in that, Multiple hooks (2) are stacked along the axial direction of the rotating shaft (1), and the fixing parts (21) of all hooks (2) are located at the same angular position; The notches (221) of all the hooks (2) are located at the same angle, or the notches (221) of two sets of hooks (2) are located at different angles and have different numbers, or the notches (221) of two sets of hooks (2) are located at different angles and have the same number.

5. The damped rotating assembly according to claim 1, characterized in that, The gripping part (22) extends from opposite sides of the fixing part (21), and the notch (221) is formed between the ends of the two gripping parts (22). Alternatively, the gripping part (22) extends from one side of the fixing part (21), and the notch (221) is formed between the beginning and end of the gripping part (22).

6. The damped rotating assembly according to claim 1, characterized in that, The rotating shaft (1) also includes a second shaft section (12), the outer peripheral surface of which is provided with a knurled part; And / or, the inner peripheral surface of the gripping part (22) also has a concave stress adjustment surface (223).

7. A hinge mechanism, characterized in that, The hinge mechanism includes: The damped rotating assembly according to any one of claims 1 to 6; The first housing (3) and the second housing (4) are connected and hinged through the pivot (1). The first housing (3) is fixedly engaged with the fixing part (21) of the hook (2), and the second housing (4) is fixedly engaged with the pivot (1).

8. The hinge mechanism according to claim 7, characterized in that, The first housing (3) is provided with a pivot mounting hole (31) and a limiting snap-fit ​​groove (32). The limiting snap-fit ​​groove (32) is connected to the pivot mounting hole (31) and is located on one side of the radial direction of the pivot mounting hole (31). The first shaft segment (11) passes through the pivot mounting hole (31), and the fixing part (21) of the hook (2) extends into the limiting snap-fit ​​groove (32).

9. The hinge mechanism according to claim 7, characterized in that, The hinge mechanism includes a limiting pin (5), which is inserted into the first housing (3) and located between the first housing (3) and the fixing part (21) of the hook (2) to press the fixing part (21) against the first housing (3); the limiting pin (5) is provided with a shaft cap (51), which axially presses the fixing part (21) of the hook (2).

10. The hinge mechanism according to any one of claims 7 to 9, characterized in that, The first housing (3) and the second housing (4) are connected by at least one pair of the damped rotating assemblies. The fixing part (21) of all the hooks (2) is located at the same angular position. The notch (221) of the hook (2) of one of the damped rotating assemblies is at a different angular position than the notch (221) of the hook (2) of the other of the damped rotating assemblies.

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