Damping rotation device and electronic equipment accessory

Abstract

The utility model discloses a damping rotation device and an electronic equipment accessory, and the damping rotation device comprises a second part which is provided with a second end face; the first component can rotate relative to the second component and is provided with a first end face attached to the second end face; one of the first end face and the second end face is provided with a plurality of convex parts, and the other one is provided with a plurality of concave parts; the convex part can abut against the end face where the concave part is located so as to generate first rotation resistance. And the convex part can be clamped into the concave part so as to generate second rotating resistance. According to the damping rotating device and the electronic equipment accessory, the damping effect can be prevented from becoming poor, and the requirement for accurate angle adjustment is met.

Description

Technical Field

[0001] This utility model relates to the technical field of electronic device structures, and in particular to a damping rotation device and electronic device accessories. Background Technology

[0002] Rotary connections are a common type of connection that allows for changes in the angle of components, making them convenient to use.

[0003] A disc damping shaft is a common standard rotating connection component, typically consisting of a central shaft, a first mounting ring and a second mounting ring fitted onto the central shaft, an anti-slip edge at one end of the central shaft, and a nut and a spring washer fitted at the other end of the shaft.

[0004] In use, the two components that need to be rotated are connected to the first mounting ring and the second mounting ring respectively. Rotating the nut causes the spring washer and the anti-detachment edge to press against the first mounting ring and the second mounting ring. Therefore, when the two components rotate relative to each other to any angle, the friction force allows the two components to remain stable at that angle.

[0005] However, use will cause wear and tear, which will reduce the damping effect. For example, it will not be stable at commonly used angles and will not meet the needs of precise adjustment at multiple angles. Utility Model Content

[0006] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a damping rotation device that can avoid a deterioration in damping effect and meet the need for precise angle adjustment.

[0007] This utility model also proposes an electronic device accessory having the aforementioned damping rotation device.

[0008] A damping rotation device according to a first aspect embodiment of the present invention includes:

[0009] The second component has a second end face;

[0010] The first component is rotatable relative to the second component and has a first end face that fits into the second end face;

[0011] One of the first end face and the second end face is provided with a plurality of protrusions and the other is provided with a plurality of recesses;

[0012] The protrusion can abut against the end face where the recess is located to generate a first rotational resistance; the protrusion can engage with the recess to generate a second rotational resistance.

[0013] A damping rotation device according to an embodiment of the present utility model has at least the following beneficial effects:

[0014] When the convex part abuts against the end face where the concave part is located, the first component and the second component have less contact, which can reduce the first rotational resistance. However, when the convex part is inserted into the concave part, there is geometric interference, which can make the second rotational resistance relatively larger than the first rotational resistance. This satisfies different damping requirements, which can prevent the first component and the second component from rotating arbitrarily, and can also increase the rotational resistance at a specific angle, so that the relative angle between the first component and the second component is maintained stably, thus meeting the usage requirements.

[0015] Because of the first end face and the second end face, when the protrusion is engaged with the concave part, if the first end face and the second end face fit together, the second rotational resistance can be further increased, so that the relative angle between the first part and the second part can be maintained more stably and is durable.

[0016] By providing a first end face and a second end face, this invention can provide a large frictional force when the first end face and the second end face are in contact, preventing the first component and the second component from rotating relative to each other, thus having a damping effect. At the same time, it can maintain the relative angle between the first component and the second component, making it convenient to use in different angle states.

[0017] By providing a convex part and a concave part, when the first component and the second component rotate relative to each other, the convex part moves out of the concave part and abuts against the corresponding end face, thereby separating the first end face and the second end face, reducing the contact area, reducing the wear of the first end face and the second end face, avoiding or delaying the deterioration of the damping effect, and extending the service life, that is, having the advantage of a long service life.

[0018] At the same time, the separation of the first and second end faces during rotation helps to slow down the reduction of friction between the first and second end faces, making the damping force stable and consistent.

[0019] At the same time, the damping force has stability and consistency, which also allows the relative angle between the first and second components to be maintained stably, giving it the advantage of high reliability.

[0020] By setting convex and concave parts, this utility model can generate geometric interference constraints. On the one hand, when the first component and the second component rotate relative to each other at the required angle, the cooperation of the convex and concave parts can be used to confirm whether the rotation is in place, thereby improving the accuracy of the rotation. In other words, it has the advantage of high precision.

[0021] On the other hand, the engagement of the convex and concave portions also restricts the continued rotation of the first and second components. At the same time, after the convex portion engages with the concave portion, the first end face and the second end face will re-fit, which helps to enhance the damping effect and allows the relative angle between the first and second components to be maintained more stably, thus preventing accidental rotation.

[0022] Once rotated into position, the convex part will be located within the concave part, which also reduces the pressure on the convex part, helps to reduce wear on the convex part, and allows the convex and concave parts to continue to fit together, making it durable.

[0023] Because there are several convex and concave parts, the damping rotation device can maintain accuracy at multiple angular positions, meeting usage requirements and facilitating widespread application.

[0024] The number of protrusions and concave parts can be set as needed. For example, maximizing the number of concave and protrusions can expand the precise rotation range of the damping rotation device, meet the requirement of 360-degree full-circumference rotation, and easily form a standard rotating part.

[0025] The height of the protrusion can be reasonably set to reduce the distance between the first end face and the second end face, which helps to reduce the range of motion of the first or second component, making the damping rotation device smaller. In other words, it has the advantage of miniaturization and is easy to implement in small products such as electronic device accessories.

[0026] This utility model also provides an electronic device accessory, which has the above-mentioned beneficial effects.

[0027] According to a first aspect of the present invention, a damping rotation device further includes a third component located on the side of the first component facing away from the second component. An elastic element is disposed between the third component and the first component, and the elastic element abuts against the first component and the third component to make the first end face fit against the second end face.

[0028] According to a first aspect of the present invention, a damping rotation device further includes a rotating shaft, wherein the first component and the third component are fitted onto the rotating shaft, and the rotating shaft is capable of driving the first component and the third component to rotate synchronously.

[0029] According to a first aspect of the present invention, a damping rotation device is provided with a driving plane on the radial outer surface of the rotating shaft, and both the first component and the third component are provided with a driven plane that matches the driving plane.

[0030] And / or, the elastic element includes a disc spring, which is fitted onto the pivot.

[0031] According to a first aspect of the present invention, a damping rotation device is provided, wherein the third component and the second component are used for mounting the damping rotation device.

[0032] According to a first aspect embodiment of the present invention, a damping rotation device is provided in which the third component is provided with a first mounting hole, the second component is provided with a second mounting hole, and one of the second component and the third component is provided with a notch, the notch being used to avoid the mounting hole of the other component.

[0033] According to a first aspect of the present invention, a damping rotation device is provided, wherein the protrusion includes a boss;

[0034] And / or, the first component includes a first ring member, the protrusion being disposed on the end face of the first ring member, the protrusion extending to the inner and outer sides of the first ring member.

[0035] According to a first aspect of the present invention, a damping rotation device is provided in which the number of protrusions and the number of concave parts are set differently;

[0036] Alternatively, the number of protrusions is four, and the number of concave parts is eight, with the protrusions and concave parts evenly distributed in a ring around the rotation center of the first component.

[0037] According to a first aspect of the present invention, a damping rotation device is provided, wherein the second component includes a second ring member, the recess is disposed on the end face of the second ring member, and the recess is open in the direction close to the inner side of the second ring member.

[0038] An electronic device accessory according to a second aspect of the present invention includes a damping rotation device as described in any one of the preceding claims.

[0039] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0040] To more clearly illustrate the technical solutions of the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a schematic diagram of the structure of a damping rotation device according to an embodiment of the present utility model;

[0042] Figure 2 for Figure 1 A cross-sectional schematic diagram of a damping rotation device is shown;

[0043] Figure 3 for Figure 1The diagram shows an assembly schematic of a damping rotation device.

[0044] Reference numerals: Second component 100; Second end face 110; First component 120; First end face 130; Protrusion 140; Recess 150; Third component 160; Elastic element 170; Driven plane 180; First mounting hole 190; Second mounting hole 200; Notch 210. Detailed Implementation

[0045] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0046] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0047] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" and "second" are mentioned, this is only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0048] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation, connection, and linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0049] The following description, in conjunction with the accompanying drawings, describes a damping rotation device and electronic device accessory according to an embodiment of the present invention.

[0050] Reference Figures 1 to 3 The present invention aims to provide an embodiment of a damping rotation device.

[0051] In some application scenarios, the damping rotation device can be part of the electronic device accessories to meet the needs of rotation and limiting. Therefore, this utility model also aims to provide an embodiment of an electronic device accessory, which includes a damping rotation device to meet the needs of rotational connection. At the same time, it has a damping effect, so that the two parts of the electronic device accessory can rotate relative to each other while maintaining a relative angle.

[0052] Compared with existing technologies, the damping rotation device of this invention can avoid the deterioration of damping effect and meet the need for precise angle adjustment. Furthermore, the damping rotation device and electronic equipment accessories of this invention, by applying the aforementioned damping rotation device, can achieve the same effect, overcoming the defects of difficulty in precise rotation and limiting after repeated rotation. It has advantages such as miniaturization, high precision, high reliability, and long lifespan, and also offers the advantages of stability and consistency in damping force.

[0053] Reference Figure 1 In this embodiment, the damping rotation device mainly includes a rotating shaft, a first component 120, a second component 100, a third component 160, and an elastic element 170, all fitted onto the rotating shaft.

[0054] In some specific embodiments of this utility model, one end of the rotating shaft can have an anti-detachment protrusion, and the other end of the rotating shaft can have a nut, which can restrict the first component 120, the second component 100, the third component 160 and the elastic element 170 on the rotating shaft, preventing the first component 120, the second component 100, the third component 160 and the elastic element 170 from falling off. At the same time, it also makes the damping rotation device a whole, which is convenient to assemble as a single part and reduces assembly.

[0055] In some specific embodiments of this utility model, both ends of the rotating shaft can have anti-detachment protrusions. The anti-detachment protrusions can be formed by riveting or upsetting, making the inside of the damping rotating device non-removable. This helps to reduce the size specifications in the direction of the rotating axis and make the damping rotating device miniaturized.

[0056] In some specific embodiments of this utility model, the rotating shaft can be a hollow structure, which facilitates molding and reduces weight. If necessary, wires can be arranged inside the rotating shaft to simplify the wiring layout.

[0057] Since the structure of the shaft is easy to understand, and in order to facilitate the demonstration of the relevant details of the improved components, which are mainly the first component 120 and the second component 100, the shaft is not shown in this embodiment.

[0058] Meanwhile, in this embodiment, the pivot is a component that is very easy to manufacture and implement. However, in this embodiment, a U-shaped component, a C-shaped component, or a door frame-shaped component can also be used as a substitute. The pivot is not shown in this embodiment, and the understanding of this utility model is not limited to the schematic diagram in the accompanying drawings.

[0059] Since the first component 120, the second component 100, the third component 160 and the elastic element 170 are mounted on the rotating shaft, the first component 120, the second component 100 and the third component 160 are all ring-shaped parts. That is, the first component 120 can also be called the first ring component, the second component 100 can also be called the second ring component, and the third component 160 can also be called the third ring component.

[0060] The second component 100 and the third component 160 are used for the installation of the damping rotation device, which can connect two components or structures that need to be rotated.

[0061] In some specific embodiments of this utility model, the third component 160 may be provided with a first mounting hole 190, the second component 100 may be provided with a second mounting hole 200, and one of the second component 100 and the third component 160 may be provided with a notch 210, which is used to avoid the mounting hole of the other component.

[0062] In this embodiment, the first mounting hole 190 may have an internal thread for connecting screws, while the second mounting hole 200 is a through hole. Other components of the electronic device accessory have threaded holes corresponding to the second mounting hole 200 and through holes corresponding to the first mounting hole 190. Therefore, the connection of the second component 100 and the connection of the third component 160 can be completed from one direction, reducing assembly directions and reducing installation difficulty.

[0063] In this embodiment, the third component 160 is provided with a notch 210, so that the tool can be assembled after passing through the third component 160 without changing the outer diameter of the third component 160.

[0064] In this embodiment, there are three notches 210, so that the three second mounting holes 200 are not blocked at the same time, reducing the amount of assembly work.

[0065] In this embodiment, the third component 160 also includes a tube that is coaxially and vertically erected in the first mounting hole 190. The inner surface of the tube is also used to form the first mounting hole 190, which can extend the length of the thread, improve the installation strength, reduce the probability of damage under stress, and at the same time avoid increasing the overall thickness of the third component 160, thus reducing the space occupied.

[0066] Reference Figure 2 and Figure 3For the first component 120 and the second component 100, the second component 100 also has a second end face 110.

[0067] The first component 120 is rotatable relative to the second component 100, and the first component 120 has a first end face 130 that fits against the second end face 110.

[0068] Furthermore, one of the first end face 130 and the second end face 110 is provided with a plurality of protrusions 140 and the other is provided with a plurality of recesses 150.

[0069] In this embodiment, the second end face 110 is provided with a recess 150, while the first end face 130 is provided with a protrusion 140. Also, for ease of illustration, in... Figure 3 In the middle, the first component 120 was rotated to make it easier to show the protrusion 140.

[0070] When the two parts of the electronic device accessory are rotated relative to each other, causing the first component 120 to rotate relative to the second component 100, the protrusion 140 and the recess 150 can engage, thereby hindering the rotation of the first component 120.

[0071] Specifically, the protrusion 140 can abut against the end face where the recess 150 is located to generate a first rotational resistance; the protrusion 140 can engage with the recess 150 to generate a second rotational resistance.

[0072] When the protrusion 140 abuts against the end face where the recess 150 is located, the first component 120 and the second component 100 have less contact, which can reduce the first rotational resistance. However, when the protrusion 140 is engaged in the recess 150, there is geometric interference, which can make the second rotational resistance relatively larger than the first rotational resistance. This satisfies different damping requirements, which can prevent the first component 120 and the second component 100 from rotating arbitrarily, and can also increase the rotational resistance at a specific angle, so that the relative angle between the first component 120 and the second component 100 is maintained stably, thus meeting the usage requirements.

[0073] Because of the first end face 130 and the second end face 110, when the protrusion 140 is engaged with the recess 150, if the first end face 130 and the second end face 110 are in contact, the second rotational resistance can be further increased, so that the relative angle between the first component 120 and the second component 100 can be maintained more stably and can be durable.

[0074] It is easy to understand that by setting the first end face 130 and the second end face 110, this embodiment can provide a large frictional force when the first end face 130 and the second end face 110 are in contact, which can prevent the first component 120 and the second component 100 from rotating relative to each other and has a damping effect. At the same time, it can maintain the relative angle between the first component 120 and the second component 100, which is convenient for use in different angle states.

[0075] It is easy to understand that by providing a protrusion 140 and a recess 150 in this embodiment, when the first component 120 and the second component 100 rotate relative to each other, the protrusion 140 will move out of the recess 150 and abut against the corresponding end face, so that the first end face 130 and the second end face 110 are separated, reducing the contact area, reducing the wear of the first end face 130 and the second end face 110, avoiding or delaying the deterioration of the damping effect, and extending the service life, that is, having the advantage of a long service life.

[0076] At the same time, the separation of the first end face 130 and the second end face 110 during rotation also helps to reduce the reduction of friction between the first end face 130 and the second end face 110, so that the damping force has stability and consistency.

[0077] At the same time, the damping force has stability and consistency, which also allows the relative angle between the first component 120 and the second component 100 to be maintained stably, giving it the advantage of high reliability.

[0078] It is easy to understand that by setting the protrusion 140 and the concave portion 150, this embodiment can generate geometric interference restriction. On the one hand, when the first component 120 and the second component 100 rotate relative to each other at the required angle, the cooperation of the protrusion 140 and the concave portion 150 can be used to confirm whether the rotation is in place, thereby improving the accuracy of the rotation. In other words, it has the advantage of high precision.

[0079] On the other hand, the engagement of the protrusion 140 and the recess 150 also restricts the continued rotation of the first component 120 and the second component 100. At the same time, after the protrusion 140 is engaged with the recess 150, the first end face 130 and the second end face 110 will re-fit, which helps to enhance the damping effect and makes the relative angle between the first component 120 and the second component 100 more stable, thus avoiding accidental rotation.

[0080] Once rotated into position, the protrusion 140 will be located within the recess, which also reduces the pressure on the protrusion 140 and helps reduce wear on the protrusion 140, allowing the protrusion 140 and the recess 150 to continue to fit together and be durable.

[0081] Since there are several convex parts 140 and concave parts 150, the damping rotation device can maintain accuracy at multiple angular positions, meet the usage requirements, and facilitate widespread application.

[0082] The number of protrusions 140 and recesses 150 can be set as needed. For example, maximizing the number of recesses 150 and protrusions 140 can expand the precise rotation range of the damping rotation device, meet the requirement of 360-degree full-circumference rotation, and easily form a rotation standard part.

[0083] The height of the protrusion 140 can be reasonably set to reduce the distance between the first end face 130 and the second end face 110, which helps to reduce the range of motion of the first component 120 or the second component 100, making the damping rotation device smaller. That is, it has the advantage of miniaturization and is easy to implement in small products such as electronic device accessories.

[0084] In terms of arrangement, the third component 160 is located on the side of the first component 120 facing away from the second component 100, and the elastic member 170 is located between the third component 160 and the first component 120. Therefore, the elastic member 170 abuts against the first component 120 and the third component 160, and the elastic force of the elastic member 170 causes the first end face 130 to fit against the second end face 110.

[0085] In some specific embodiments of this utility model, the rotating shaft can drive the first component 120 and the third component 160 to rotate synchronously. Thus, when the two parts of the electronic device accessory rotate relative to each other, power can be transmitted from the third component 160 to the first component 120, so that the protrusion 140 and the concave part 150 can switch with each other.

[0086] In some specific embodiments of this utility model, the radial outer surface of the rotating shaft can be provided with a driving plane, and the first component 120 and the third component 160 are both provided with a driven plane 180 that matches the driving plane, so that the first component 120 and the third component 160 can rotate simultaneously, avoiding affecting the design effect.

[0087] In some specific embodiments of this utility model, there can be two driving planes and two driven planes 180, which are arranged in parallel on opposite sides of the rotating shaft to improve the limiting strength and facilitate synchronous rotation.

[0088] In some specific embodiments of this utility model, the elastic element 170 may include a disc spring, which is fitted onto the rotating shaft to reduce the space occupied.

[0089] In some specific embodiments of this utility model, the elastic element 170 can be multiple disc springs, which are stacked to change the elastic force and meet different force requirements.

[0090] In some specific embodiments of this utility model, the elastic element 170 can be a helical spring, but the miniaturization advantage is not prominent.

[0091] In some specific embodiments of this utility model, the elastic element 170 can be a helical spring, and there can be multiple helical springs. Furthermore, they can be arranged in a ring with the rotation center of the first component 120 as the reference, which can also provide elastic support, but the miniaturization advantage is not prominent.

[0092] In some specific embodiments of this utility model, the protrusion 140 can include a boss to avoid the top of the protrusion 140 being sharp, so that the top area of ​​the protrusion 140 is moderate and to avoid the protrusion 140 wearing out too quickly and affecting the limiting effect.

[0093] In some specific embodiments of this utility model, the boss can be made to have length and width directions, which can increase the mating area with the recess 150, making it less likely for the boss to slide out of the recess 150 automatically.

[0094] In some specific embodiments of this utility model, the boss can be a frustum or other shapes, achieving a similar effect. However, due to changes in the mating area or mating length, the rotational resistance changes accordingly, meeting different usage needs.

[0095] In some specific embodiments of this utility model, the protrusion 140 can be extended to the inner and outer sides of the first ring, so that the mating area or mating length of the protrusion and the recess 150 is maximized, thereby improving the limiting effect.

[0096] In some specific embodiments of this utility model, the number of protrusions 140 and the number of recesses 150 can be set differently, which not only meets the need for precise rotation at multiple angles, but also makes the data of protrusions 140 and recesses 150 reasonably configured, so that the rotation resistance is appropriate or moderate to meet the needs of use. Moreover, it is beneficial to simplify the component structure and reduce the manufacturing difficulty.

[0097] In this embodiment, there are four protrusions 140 and eight recesses 150. With the rotation center of the first component 120 as the reference, the protrusions 140 and recesses 150 are evenly distributed in a ring. That is, the included angle between two adjacent protrusions 140 is 90 degrees, and the included angle between two adjacent recesses 150 is 45 degrees, so as to meet the rotation adjustment needs of every 45 degrees.

[0098] In some specific embodiments of this utility model, the recess 150 can be opened in the direction close to the inner side of the second ring, which satisfies the rotation limit requirement and restricts the area of ​​the recess 150 within a reasonable range, thus avoiding affecting the strength of the second component 100.

[0099] In some specific embodiments of this utility model, the recess 150 and the protrusion 140 may have bevels or slopes in the rotation direction of the first component 120, so that the protrusion 140 can be moved out of the recess 150 or inserted into the recess 150.

[0100] In this embodiment, the first component 120 being able to rotate relative to the second component 100 means that the two can rotate relative to each other, and there is no specific limitation that the first component 120 rotates while the second component 100 is fixed.

[0101] In practical applications, the first component 120 can rotate, the second component 100 can rotate, or the first component 120 and the second component 100 can rotate simultaneously.

[0102] In the description of this specification, references to terms such as "an embodiment," "some embodiments," "illustrative 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, 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.

[0103] The terms "first," "second," "third," "fourth," etc. (if applicable) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein.

[0104] It should also be noted that, in the description of this specification, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0105] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may also include other steps or units that are not explicitly listed or that are inherent to such processes, methods, products, or apparatus.

[0106] Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0107] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A damped rotation device, characterized in that, include: The second component (100) has a second end face (110). The first component (120) is rotatable relative to the second component (100) and has a first end face (130) that fits against the second end face (110). One of the first end face (130) and the second end face (110) is provided with a plurality of protrusions (140) and the other is provided with a plurality of recesses (150). The protrusion (140) can abut against the end face where the recess (150) is located to generate a first rotational resistance; the protrusion (140) can engage with the recess (150) to generate a second rotational resistance.

2. The damping rotation device according to claim 1, characterized in that, The damping rotation device further includes a third component (160), which is located on the side of the first component (120) facing away from the second component (100). An elastic element (170) is provided between the third component (160) and the first component (120). The elastic element (170) abuts against the first component (120) and the third component (160) so that the first end face (130) fits against the second end face (110).

3. The damping rotation device according to claim 2, characterized in that, The damping rotation device further includes a rotating shaft, on which the first component (120) and the third component (160) are fitted. The rotating shaft can drive the first component (120) and the third component (160) to rotate synchronously.

4. The damping rotation device according to claim 3, characterized in that, The radial outer surface of the shaft is provided with a driving plane, and the first component (120) and the third component (160) are both provided with a driven plane (180) that matches the driving plane. And / or, the elastic element (170) includes a disc spring, which is fitted onto the shaft.

5. A damping rotation device according to claim 3, characterized in that, The third component (160) and the second component (100) are used for mounting the damping rotation device.

6. A damping rotation device according to claim 5, characterized in that, The third component (160) is provided with a first mounting hole (190), the second component (100) is provided with a second mounting hole (200), and one of the second component (100) and the third component (160) is provided with a notch (210) for avoiding the mounting hole of the other component.

7. The damping rotation device according to claim 1, characterized in that, The protrusion (140) includes a boss; And / or, the first component (120) includes a first ring member, the protrusion (140) being disposed on the end face of the first ring member, the protrusion (140) extending to the inner and outer sides of the first ring member.

8. The damping rotation device according to claim 1, characterized in that, The number of the protrusions (140) and the number of the recesses (150) are set differently; Alternatively, the number of protrusions (140) is four, and the number of recesses (150) is eight, with the protrusions (140) and recesses (150) evenly distributed in a ring around the rotation center of the first component (120).

9. A damping rotation device according to claim 1, characterized in that, The second component (100) includes a second ring member, and the recess (150) is disposed on the end face of the second ring member, the recess (150) being open in the direction close to the inner side of the second ring member.

10. An electronic device accessory, characterized in that, Includes a damping rotation device as described in any one of claims 1 to 9.

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