Electronic device and hinge mechanism thereof

Abstract

An electronic device includes a screen support, a hinge mechanism, and an operating member. The hinge mechanism includes a back plate, a deceleration assembly, and a friction assembly. The back plate is fixed to the screen support. The deceleration assembly includes an input plate and a deceleration member. The deceleration member is disposed on the input plate. The friction assembly is disposed between the back plate and the input plate. The operating member is connected to the deceleration member, and a rotation center of the operating member coincides with an axis on which the back plate and the deceleration member are coaxially disposed.

Description

Technical Field

[0001] An electronic device and its hinge mechanism, particularly an electronic device and its hinge mechanism capable of fixing a screen and rotating the screen via a hinge mechanism. Background Technology

[0002] With the popularization of digital technology, computer devices have gradually become an important part of daily life. Users can use computer devices to process electronic documents, analyze data, or enjoy audio-visual entertainment. Whether it is an all-in-one computer or a desktop computer, computer devices need to be connected to a screen to display electronic information for users to view. To increase the convenience of users when reading, screens on the market are now designed to be rotatable, allowing users to freely rotate the screen to adjust the orientation of the displayed image. Summary of the Invention

[0003] In view of this, an electronic device is provided, comprising a screen support, a hinge mechanism, and an operating member. The hinge mechanism includes a back plate, a reduction gear assembly, and a friction assembly. The back plate is fixed to the screen support. The reduction gear assembly includes an input plate and a reduction member. The reduction member is disposed on the input plate. The friction assembly is disposed between the back plate and the input plate. The operating member is connected to the reduction member, and the rotation center of the operating member coincides with the axis coaxially arranged between the back plate and the reduction member.

[0004] In some embodiments, the deceleration member has an input end and an output end, an input plate is fixed to the input end, an operating member is fixed to the output end, and the input end is pivotally connected to the back plate.

[0005] In some embodiments, the radial distance from the input end to the position where the friction assembly is fixed to the back plate or input plate is greater than the radial distance from the input end to the output end.

[0006] In some embodiments, the friction assembly is located radially outside the deceleration member.

[0007] In some embodiments, the friction assembly includes a fixed surface, a friction surface, and a force-applying element. The fixed surface is fixed to one of the back plate and the input plate, the friction surface abuts against the other of the back plate and the input plate, and the force-applying element is located between the input plate and the back plate, so that the friction surface abuts against one of the back plate and the input plate.

[0008] In some embodiments, the friction assembly includes a friction element and a force-applying element. The friction element has a fixed surface and a friction surface. The force-applying element is located between the input plate and the friction element. The force-applying element is a magnet, and the back plate is made of a ferromagnetic material, so that the friction surface abuts against the back plate.

[0009] In some embodiments, the friction assembly includes a friction element and a force-applying element. The friction element has a fixed surface and a friction surface, and the force-applying element is an elastic element (e.g., a spring or leaf spring). One end of the elastic element contacts the friction element, and the other end contacts one of the back plate and the input plate, so that the friction surface abuts against the other of the back plate and the input plate.

[0010] In some embodiments, the back plate has an axially extending outer edge, the input plate has a positioning post extending radially toward the outer edge, and an elastic element is sleeved on the positioning post.

[0011] In some embodiments, a hinge mechanism is provided, comprising a back plate, a reduction assembly, and a friction assembly. The reduction assembly includes an input plate and a reduction member. The reduction member has an input end and an output end, the input plate is fixed to the input end, and the input end is pivotally connected to the back plate. The friction assembly has a fixed surface and a friction surface, the fixed surface is fixed to one of the back plate and the input plate, and the friction surface abuts against the other of the back plate and the input plate. The radial distance from the input end to the position where the friction assembly is fixed to the back plate or the input plate is greater than the radial distance from the input end to the output end.

[0012] In some embodiments, the reduction component is a planetary gear system, including a central gear, a planetary gear set, and a ring gear. The planetary gear set meshes between the central gear and the ring gear. The central gear is connected to the input end, and the ring gear is connected to the output end.

[0013] In some embodiments, the planetary gear set includes a first gear, a second gear, and a third gear, which mesh between a central gear and a ring gear, respectively.

[0014] In some embodiments, a hinge mechanism includes a back plate, a reduction assembly, and a friction assembly. The reduction assembly includes an input plate and a reduction member, the reduction member having an input end and an output end, the input plate being disposed at the input end and pivotally connected to the back plate. The friction assembly is disposed on either the back plate or the input plate, with its bottom resting against the other of the back plate or the input plate.

[0015] In some embodiments, one end of the force-applying member is fixed to one of the back plate or the input plate, so that the force-applying member clamps the back plate and the input plate.

[0016] Various embodiments are described in detail below; however, these embodiments are merely illustrative and do not limit the scope of protection intended for this invention. Furthermore, some elements are omitted from the accompanying drawings in the embodiments to clearly illustrate the technical features of the invention. The same reference numerals will be used to denote the same or similar elements in all the drawings. Attached Figure Description

[0017] Figure 1 This is a perspective view of an electronic device according to some embodiments of the present invention.

[0018] Figure 2 An exploded view of an electronic device according to some embodiments of the present invention.

[0019] Figure 3 for Figure 2 Enlarged view of the friction assembly in area 3.

[0020] Figure 4 This is a diagram illustrating the motion of the screen rotating relative to the screen support, according to some embodiments of the present invention.

[0021] Figure 5 for Figure 1 A partial cross-sectional view of the central hinge mechanism at position 2-2, showing the relative position of the friction assembly and the central gear.

[0022] Figure 6 According to some embodiments of the present invention, corresponding Figure 5 A partial cross-sectional view of the location shows an embodiment where the force-applying element is a spring.

[0023] Figure 7 According to some embodiments of the present invention, corresponding Figure 5 A partial cross-sectional view of the location shows an embodiment where the force-applying element is a spring.

[0024] Figure 8 According to some embodiments of the present invention, corresponding Figure 5 A partial cross-sectional view of the location shows an embodiment where the force-applying element is a magnet.

[0025] Figure 9 According to some embodiments of the present invention, corresponding Figure 5 A partial cross-sectional view of the location shows an embodiment of a spring in which the force-applying element is arranged radially.

[0026] Figure 10 According to some embodiments of the present invention, another hinge mechanism corresponds to Figure 5 A partial cross-sectional view of the location.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1: Electronic devices

[0029] 10: Screen stand

[0030] 102: Locking fastener

[0031] 20, 40: Hinge mechanism

[0032] 202, 402: Backplate

[0033] 204, 404: Reduction gear assembly

[0034] 206, 406: Friction components

[0035] 208, 408: Input board

[0036] 210, 410: Reduction components

[0037] 212, 412: Input terminals

[0038] 214, 414: Output terminals

[0039] 216: Fixed surface

[0040] 218: Friction surface

[0041] 220, 416: Force-applying components

[0042] 220a, 220d: Springs

[0043] 220b: Reed

[0044] 220c: Magnet

[0045] 221: Ears

[0046] 222: Friction component

[0047] 223: Head

[0048] 224: Fasteners

[0049] 226: Fixing part

[0050] 228: Fixed shaft

[0051] 230: Center Gear

[0052] 232: Planetary Gear Set

[0053] 234: Ring gear

[0054] 236: First Gear

[0055] 238: Second Gear

[0056] 240: Third Gear

[0057] 242: Exterior eaves

[0058] 244: Positioning Post

[0059] 30: Operating components

[0060] C: Center of rotation

[0061] D1: First radial distance

[0062] D2: Second radial distance

[0063] L: Axis

[0064] S: Thickness Detailed Implementation

[0065] Please see Figure 1 , Figure 2 and Figure 3 . Figure 1 This is a perspective view of an electronic device according to some embodiments of the present invention. Figure 2 An exploded view of an electronic device according to some embodiments of the present invention. Figure 3 for Figure 2 An enlarged view of the friction assembly in area 3. (See diagram below.) Figures 1 to 3 As shown, the electronic device 1 includes a screen support 10, a hinge mechanism 20, and an operating member 30. The hinge mechanism 20 includes a back plate 202, a reduction assembly 204, and a friction assembly 206. The back plate 202 is fixed to the screen support 10. The reduction assembly 204 includes an input plate 208 and a reduction member 210, with the reduction member 210 disposed on the input plate 208. The friction assembly 206 is disposed between the back plate 202 and the input plate 208. The operating member 30 is connected to the reduction member 210, and the rotation center C of the operating member 30 (see...) Figure 5 The axis L coincides with the back plate 202 and the deceleration component 210 and is coaxially arranged (to be explained later).

[0066] In some embodiments, the deceleration member 210 has an input end 212 and an output end 214. An input plate 208 is fixed to the input end 212, and an operating member 30 is fixed to the output end 214. The input end 212 is pivotally connected to the back plate 202. The input end 212 is pivotally connected to the back plate 202 and has an axis L. The rotation center C coincides with the axis L that is coaxially arranged between the back plate 202 and the input end 212.

[0067] In some embodiments, there is a radial distance from the input end 212 to the position where the friction assembly 206 is fixed to the back plate 202 or the input plate 208. The friction assembly 206 obtains torque based on the applied force and the radial distance, and the deceleration member 210 is used to amplify this torque (described later).

[0068] In some embodiments, such as Figure 3As shown, the friction assembly 206 includes a fixing surface 216, a friction surface 218, and a force-applying member 220. The force-applying member 220 is located between the back plate 202 and the input plate 208, causing the friction surface 218 to abut against one of the back plate 202 and the input plate 208. In some embodiments, the friction assembly 206 further includes a friction member 222, which has the aforementioned fixing surface 216 and friction surface 218. The aforementioned "force-applying member 220 is located between the back plate 202 and the input plate 208, causing the friction surface 218 to abut against one of the back plate 202 and the input plate 208" can mean that one end of the force-applying member 220 is connected to the friction member 222, and the other end contacts one of the back plate 202 and the input plate 208. In this case, the force-applying member 220 can continuously apply force to the friction member 222, so that the friction surface 218 of the friction member 222 can abut against the back plate 202 or the input plate 208. Taking the friction element 222 fixed to the input plate 208 as an example, in this embodiment, the friction element 222 is fixed to the input plate 208 in such a way that the friction element 222 can move axially ( ) of the deceleration assembly 204. Figure 3 The displacement along the Z-axis is fixed (details to be described later). The force-applying element 220 is located between the input plate 208 and the friction element 222, such that both ends of the force-applying element 220 contact the input plate 208 and the friction element 222, respectively. In some embodiments, the force-applying element 220 is an elastic element (spring or leaf spring), and when the friction assembly 206 is assembled, the spring is compressed. Therefore, the friction element 222 can be displaced axially in the deceleration assembly 204, and the force-applying element 220 can cause the friction surface 218 of the friction assembly 206 to abut against the back plate 202. With this design, the friction assembly 206 can generate friction between the back plate 202 and the input plate 208, preventing the deceleration assembly 204 from rotating. That is, when the torque generated at the output end 214 of the deceleration assembly 204 (hereinafter referred to as the second torque) is less than the torque formed by the friction force (hereinafter referred to as the first torque), the hinge mechanism 20 will not rotate. Conversely, the hinge mechanism 20 will rotate in the direction of the second torque.

[0069] In some embodiments, the aforementioned "force-applying member 220 is located between the back plate 202 and the input plate 208, so that the friction surface 218 abuts against one of the back plate 202 and the input plate 208" can also refer to the force-applying member 220 being located between the back plate 202 and the friction member 222, so that both ends of the force-applying member 220 contact the back plate 202 and the friction member 222 respectively. The fixing surface 216 of the friction member 222 is fixed to the back plate 202, while the friction surface 218 of the friction member 222 abuts against the input plate 208 (not shown in the figure). This embodiment can also achieve the purpose that when the second torque generated by the output end 214 of the deceleration assembly 204 is less than the first torque formed by the friction force, the hinge mechanism 20 will not rotate (described in detail later).

[0070] In some embodiments, the friction component 206 may be a spring with a fixed surface 216 and a friction surface 218 at its two ends. The fixed surface 216 and the friction surface 218 contact the input plate 208 and the back plate 202 respectively. This design can also achieve the purpose that when the torque generated by the output end 214 of the deceleration component 204 is less than the torque formed by the friction force, the hinge mechanism 20 will not rotate (details to follow).

[0071] Please refer to the following for details regarding how friction element 222 is fixed to input plate 208. Figure 3 In some embodiments, the friction element 222 is fixed to the input plate 208 by a fastener 224, which restricts the displacement of the friction element 222 in the X and Y axis directions as shown in the figures, but has a predetermined displacement margin in the Z axis direction. The fastener 224 may be, for example, a stud or a rivet. Figure 3 As shown, taking the fixing member 224 as a stud as an example, after the fixing member 224 locks the ear 221 of the friction member 222 to the input plate 208, the distance from the head 223 of the fixing member 224 to the input plate 208 is greater than the thickness of the ear 221 of the friction member 222 (thickness in the Z-axis direction). In this way, the friction member 222 has a predetermined displacement margin in the Z-axis direction, and ensures that the friction member 222 can be pushed by the force-applying member 220 so that the friction surface 218 of the friction member 222 abuts against the back plate 202. In some embodiments, the friction member 222 is fixed to the back plate 202 by a fastener 224, wherein after the fastener 224 locks the ear 221 of the friction member 222 to the back plate 202, the distance from the head 223 of the fastener 224 to the back plate 202 is greater than the thickness (thickness in the Z-axis direction) of the ear 221 of the friction member 222. In this way, the friction member 222 can be pushed by the force-applying member 220 so that the friction surface 218 of the friction member 222 abuts against the input plate 208.

[0072] Please refer to both together. Figures 1 to 4 . Figure 4 This is a diagram illustrating the motion of the screen rotating relative to the screen support, according to some embodiments of the present invention. Figures 1 to 4 As shown, the operating component 30 can be, for example, a screen, a screen mounting bracket, or a combination of a screen and a screen mounting bracket. When the operating component 30 is a screen, the screen bracket 10 is directly assembled to the screen. It should be noted that... Figure 4Taking the combination of the operating component 30 and the screen mounting bracket as an example, the back plate 202 can be locked to the screen bracket 10 by the fastener 102, and the operating component 30 is fixed to the output end 214 of the reduction assembly 204, so that the operating component 30 can be assembled to the screen bracket 10 by the reduction assembly 204. When the operating component 30 drives the reduction assembly 204, the reduction assembly 204 can reduce the rotational speed of the operating component 30 and amplify the torque between the friction assembly 206 and the back plate 202 or the input plate 208, so that the user needs to apply appropriate force to rotate the operating component 30 smoothly (details to follow). In some embodiments, Figure 4 Taking the screen as an example, the vertical distance (along the Y-axis in the attached diagram) from the rotation center C of the screen to the bottom surface of the screen bracket 10 is greater than half the longest diagonal of the screen. This allows the screen to rotate smoothly relative to the screen bracket 10 without colliding with the desktop when it is fixed to the output end 214. Figure 2 In one embodiment, the reduction assembly 204 includes a planetary gear assembly (reduction member 210). Therefore, the rotation angle of the operating member 30 is 360 degrees. The user can rotate the operating member 30 to any angle according to the usage requirements, and the reduction member 210 can also maintain the operating member 30 at the selected angle.

[0073] In some embodiments, the input board 208 has a fixing part 226 (see...) Figure 2 The input plate 208 is fixed to the input end 212 by the fixing part 226, so that the input plate 208 and the input end 212 are relatively stationary. The input end 212 and the fixing shaft 228 of the back plate 202 are relatively rotatable, that is, they are pivotally connected, so that the input plate 208 and the back plate 202 are also relatively rotatable (described in detail later). In some embodiments, the operating member 30 is fixed to the output end 214, and the connection between the operating member 30 and the output end 214 is relatively stationary. Thus, the input plate 208 and the operating member 30 are relatively rotatable. The fixing part 226 can be a fixing hole or a locking hole.

[0074] In some embodiments, when the operating member 30 is rotated, the output end 214 of the deceleration member 210 drives the input end 212. The operating member 30 can drive the output end 214, and the input end 212 can drive the input plate 208, causing the input plate 208 to rotate relative to the back plate 202. During the rotation of the input plate 208, the friction surface 218 can continuously abut against the back plate 202 or the input plate 208. The friction assembly 206 uses elastic force or magnetic force to cause the friction surface 218 to abut against the back plate 202 or the input plate 208 (described in detail later).

[0075] Please see Figures 1 to 5 . Figure 5 for Figure 1A partial cross-sectional view of the central hinge mechanism at position 2-2, showing the relative position of the friction assembly and the central gear. Figure 5 The screen bracket 10 is omitted, and Figure 5 The middle operating component 30 is a screen assembly frame. For example... Figures 1 to 5 As shown, the aforementioned "position from the input end 212 to the friction assembly 206 fixed to the back plate 202 or the input plate 208" can refer to the position where the fixing surface 216 is fixed to the back plate 202 or the input plate 208, and the radial distance from the center point of the fixing surface 216 to the center point of the input end 212 can be called the first radial distance D1. Furthermore, the radial distance from the side of the output end 214 to the center point of the input end 212 can be called the second radial distance D2.

[0076] For example Figure 5 As shown, in some embodiments, the input end 212 coincides with the rotation center C, so that the fixed surface 216 has the maximum lever arm with the input end 212 at a fixed position. The torque generated by the friction assembly 206 based on the first radial distance D1 and the applied force (such as friction) can be referred to as the first torque. Operating member 30 ( Figure 5 The torque generated by the screen assembly frame (in the middle) based on the second radial distance D2 and another force (the force applied to the screen or screen assembly frame) can be called the second torque. It should be noted that when the operating member 30 is a combination of the screen assembly frame and the screen, the second radial distance D2 can refer to the distance from the diagonal of the screen to the center point of the input terminal 212. When the second torque is less than or equal to the first torque, the operating member 30 is positioned by the deceleration component 204 and the friction component 206, causing the back plate 202 to remain relatively stationary with respect to the operating member 30. Conversely, when the second torque is greater than the first torque, the back plate 202 can rotate relative to the operating member 30 along the direction of the second torque. In some embodiments, increasing the number of friction components 206 can increase the first torque of each friction component 206 on the back plate 202 or the input plate 208, thereby increasing the damping sensation when pushing the operating member 30. Furthermore, the deceleration component 210 can amplify the first torque (e.g., frictional force), making the first torque greater than the second torque, thereby limiting the rotation of the operating member 30 or stopping it at any angle (described later).

[0077] In some embodiments, the number of friction components 206 may be greater than one (e.g., Figure 2 (As shown, there are three friction components 206). Under the premise that each friction component 206 generates the same frictional force, increasing the number of friction components 206 can increase the first torque. In some embodiments, the frictional force generated by each friction component 206 may be different. Furthermore, the first radial distance D1 of each friction component 206 may also be different, meaning that the radial distance of each friction component 206 from the input end 212 may be the same or different.

[0078] For example Figure 5 As shown, in some embodiments, the friction assembly 206 and the deceleration member 210 are substantially coplanar, such as... Figure 5 As shown, the friction component 206 is located on the radial outer side of the deceleration member 210. Thus, the thickness of the friction component 206 can be designed according to the thickness S of the deceleration member 210, so that the hinge mechanism 20 can be designed to be thin and light, and the thickness of the hinge mechanism 20 can be close to that of the deceleration member 210.

[0079] In some embodiments, such as Figure 2 As shown, the reduction component 210 is a planetary gear system, including a central gear 230, a planetary gear set 232, and a ring gear 234. The planetary gear set 232 meshes between the central gear 230 and the ring gear 234. The central gear 230 is fixed to the input end 212. The two can be integrally formed components, or the input end 212 can be the central shaft of the central gear 230, and the input end 212 is pivotally connected to the fixed shaft 228. The ring gear 234 is connected to the output end 214. In this embodiment, the output end 214 is fixed to the ring gear 234. When the reduction component 210 is activated, the operating member 30 and the ring gear 234 are relatively stationary. When the operating member 30 is rotated, the operating member 30 can drive the ring gear 234 to rotate, which in turn drives the planetary gear set 232 to rotate. The planetary gear set 232 then drives the central gear 230 to rotate, causing the back plate 202 to rotate synchronously with the central gear 230. The central gear 230 and the ring gear 234 have a speed ratio that allows for a speed reduction effect between them, and the speed reduction component 210 can amplify the first torque according to the speed reduction ratio. In some embodiments, as shown in Table 1 below, the torque is directly proportional to the gear pitch circle diameter and inversely proportional to the speed. For example, when the speed ratio of the central gear 230 to the ring gear 234 is 1:4, the central gear 230 obtains a torque of 10.5 kg-cm, and the ring gear 234 obtains a torque of 42 kg-cm. The speed of the central gear 230 is 240 rpm, and the speed of the ring gear 234 is 60 rpm. The pitch circle diameter of the central gear 230 is 20 mm, and the pitch circle diameter of the ring gear 234 is 80 mm. Therefore, during implementation, appropriate tooth ratios (reduction ratios), first radial distances D1, second radial distances D2, and friction forces can be designed to achieve the positioning effect of the operating element 30 and the force required for the user to rotate the operating element 30.

[0080] Table 1:

[0081]

[0082] In some embodiments, such as Figure 2As shown, the planetary gear set 232 includes a first gear 236, a second gear 238, and a third gear 240. The first gear 236, the second gear 238, and the third gear 240 are respectively meshed between the central gear 230 and the ring gear 234. The more gears in the planetary gear set 232 (which can refer to the first gear 236, the second gear 238, and the third gear 240), the greater the load-bearing capacity of the reduction component 210.

[0083] In some embodiments, the central gear 230 may be made of metal, and the planetary gear set 232 and the ring gear 234 may be made of plastic. Accordingly, the planetary gear set 232 and the ring gear 234 have high toughness and wear resistance. When the central gear 230 and the planetary gear set 232 mesh and rotate with each other, they are not prone to fatigue spalling, thereby improving the service life of the reduction component 210.

[0084] Please see Figure 6 According to some embodiments of the present invention, corresponding Figure 5 A partial cross-sectional view of the location shows an embodiment where the force-applying element is a spring. Figure 6 The screen bracket 10 is omitted, and Figure 6 The middle operating component 30 is a screen assembly frame. In some embodiments, such as Figure 5 and Figure 6 As shown, friction assembly 206 may omit friction element 222 (see...). Figure 2 The force-applying component 220 can be a spring 220a, wherein the spring 220a has the aforementioned fixing surface 216 and friction surface 218. Taking the friction assembly 206 fixed to the input plate 208 as an example, the spring 220a is located between the back plate 202 and the input plate 208. The fixing surface 216 of the spring 220a contacts the input plate 208, and the friction surface 218 contacts the back plate 202. When the spring 220a is assembled with the friction assembly 206, the spring 220a is in a compressed state, causing the friction surface 218 of the friction assembly 206 to abut against the back plate 202. Taking the friction assembly 206 fixed to the back plate 202 as another example, the fixing surface 216 of the spring 220a is in contact with the back plate 202, and the friction surface 218 is in contact with the input plate 208. The friction surface 218 of the spring 220a can push against the input plate 208, so that the friction surface 218 of the friction assembly 206 abuts against the input plate 208.

[0085] Figure 7 According to some embodiments of the present invention, corresponding Figure 5 A partial cross-sectional view of the location shows an embodiment where the force-applying element is a spring. Figure 7 The screen bracket 10 is omitted, and Figure 7 The middle operating component 30 is a screen assembly frame. In some embodiments, such as Figure 5 and Figure 7As shown, friction component 206 can omit friction element 222 (see...). Figure 2 The force-applying component 220 can be a spring 220b, which has the aforementioned fixing surface 216 and friction surface 218. Taking the friction assembly 206 fixed to the input plate 208 as an example, the spring 220b is located between the back plate 202 and the input plate 208. The fixing surface 216 of the spring 220b contacts the input plate 208, and the friction surface 218 contacts the back plate 202. When the spring 220b is assembled with the friction assembly 206, the spring 220b is in a compressed state, and the friction surface 218 of the spring 220b can push against the back plate 202, so that the friction surface 218 of the friction assembly 206 abuts against the back plate 202. Taking the friction assembly 206 fixed to the back plate 202 as another example, the fixing surface 216 of the spring 220b is in contact with the back plate 202, and the friction surface 218 is in contact with the input plate 208. The friction surface 218 of the spring 220b can push against the input plate 208, so that the friction surface 218 of the friction assembly 206 abuts against the input plate 208.

[0086] Please see Figure 8 , Figure 8 According to some embodiments of the present invention, corresponding Figure 5 A partial cross-sectional view of the location shows an embodiment where the force-applying element is a magnet. Figure 8 The screen bracket 10 is omitted, and Figure 8 The middle operating component 30 is a screen assembly frame. In some embodiments, such as Figure 5 and Figure 8 As shown, the force-applying component 220 can be a magnet 220c, and the material of the back plate 202 or the input plate 208 can be a ferromagnetic material. Taking the friction assembly 206 fixed to the input plate 208 as an example, the fixing surface 216 of the friction component 222 contacts the input plate 208, and the friction surface 218 contacts the back plate 202. The way the friction component 222 is axially fixed to the input plate 208 allows the friction component 222 to move axially (in the direction of the deceleration assembly 204) Figure 8 The friction assembly 206 is fixed by displacement along the Z-axis. Magnet 220c is located between the input plate 208 and the friction component 222. When the magnet 220c assembles the friction assembly 206, it is attracted by the back plate 202 and pushes against the friction component 222, allowing the friction component 222 to move radially within the reduction assembly 204. Magnet 220c then causes the friction surface 218 of the friction assembly 206 to abut against the back plate 202. Taking the friction assembly 206 fixed to the back plate 202 as another example, the fixing surface 216 of the friction component 222 contacts the back plate 202, and the friction surface 218 contacts the input plate 208. The axial fixation of the friction component 222 to the back plate 202 allows the friction component 222 to move radially within the reduction assembly 204. Figure 8The displacement is fixed along the Z-axis. The magnet 220c is located between the back plate 202 and the friction component 222. When the magnet 220c is assembled with the friction assembly 206, the magnet 220c is attracted by the input plate 208 and pushes the friction component 222. The friction component 222 can be displaced radially in the deceleration assembly 204. The magnet 220c can make the friction surface 218 of the friction assembly 206 abut against the input plate 208.

[0087] Please see Figure 9 , Figure 9 According to some embodiments of the present invention, corresponding Figure 5 A partial cross-sectional view of the location shows an embodiment of a spring in which the force-applying element is arranged radially. Figure 9 The screen bracket 10 is omitted, and Figure 9 The middle operating component 30 is a screen assembly frame. In some embodiments, such as Figure 5 and Figure 9 As shown, the friction assembly 206 is located radially outside the deceleration member 210. The force-applying member 220 can be a radially arranged spring 220d. Taking the friction assembly 206 fixed to the input plate 208 as an example, the back plate 202 has an axial ( Figure 9 The outer eaves 242 extend along the Z-axis, and the input plate 208 has a radial ( Figure 9 The positioning post 244 extends from the X-axis of the friction element 222 to the outer edge 242. The friction element 222 is fixed radially to the input plate 208, allowing it to be displaced radially in the deceleration assembly 204. The spring 220d is located between the input plate 208 and the friction element 222 and is sleeved on the positioning post 244, such that both ends of the spring 220d contact the input plate 208 and the friction element 222 respectively. When the spring 220d is assembled with the friction assembly 206, the spring 220d is in a compressed state. The friction element 222 can be displaced radially in the deceleration assembly 204, and the force-applying member 220 can make the friction surface 218 of the friction assembly 206 abut against the outer edge 242 of the back plate 202. In some embodiments, taking the friction assembly 206 fixed to the back plate 202 as an example, the back plate 202 has an axial ( Figure 9 The outer eaves 242 extend along the Z-axis, and the input plate 208 has a radial ( Figure 9The positioning post 244 extends from the X-axis direction of the friction element 222 to the outer edge 242. The friction element 222 is fixed radially to the back plate 202, allowing it to be fixed by radial displacement within the deceleration assembly 204. The spring 220d is located between the back plate 202 and the friction element 222 and is sleeved on the positioning post 244, with both ends of the spring 220d contacting the back plate 202 and the friction element 222, respectively. When the spring 220d is assembled into the friction assembly 206, it is in a compressed state. The friction element 222 can be radially displaced within the deceleration assembly 204, allowing the force-applying member 220 to cause the friction surface 218 of the friction assembly 206 to abut against the input plate 208. In this way, the friction assembly 206, through the radially positioned spring 220d, can shorten the gap between the back plate 202 and the input plate 208, allowing the friction assembly 206 to be designed to be thinner and lighter.

[0088] Please see Figure 10 , Figure 10 According to some embodiments of the present invention, another hinge mechanism corresponds to Figure 5 A partial cross-sectional view of the location. Figure 10 The screen bracket 10 is omitted, and Figure 10 The middle operating component 30 is a screen assembly frame. For example... Figure 10 As shown, in some embodiments, a hinge mechanism 40 is provided, including a back plate 402, a reduction assembly 404, and a friction assembly 406. The reduction assembly 404 includes an input plate 408 and a reduction member 410, the reduction member 410 having an input end 412 and an output end 414. The input plate 408 is disposed at the input end 412, which is pivotally connected to the back plate 402. The friction assembly 406 is disposed on either the back plate 402 or the input plate 408, and abuts against the other of the back plate 402 or the input plate 408. It should be noted that the friction assembly 406 may be, for example, a coating, a portion of the back plate that contacts the input plate, or a patch. In this embodiment, the back plate 402 and the reduction assembly 404 are related to the aforementioned elements (see... Figure 2 The backplate 202 and the deceleration assembly 204 operate in the same way; please refer to [reference needed]. Figures 1 to 5 The details will not be elaborated further here. In this embodiment, the hinge mechanism 40 further includes a force-applying member 416, one end of which is fixed to either the back plate 402 or the input plate 408, so that when the input plate 408 rotates relative to the back plate 402, the force-applying member 416 can stably clamp the back plate 402 and the input plate 408. In this embodiment, the force-applying member 416 can be a clamp.

[0089] In summary, in some embodiments, an electronic device is provided in which, when a user rotates the screen, a deceleration effect is generated by the deceleration member of the hinge mechanism and the friction component, and the torque between the friction component and the back plate is amplified to increase the damping feel when the operating component (e.g., the screen) rotates. When the operating component stops rotating, the friction component can position the operating component. In this way, the electronic device can rotate and maintain the operating component at any angle, and the damping feel generated by the hinge mechanism when the operating component rotates improves the operating feel of the screen rotation.

[0090] Although the technical content of the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any modifications and refinements made by those skilled in the art without departing from the spirit of the present invention should be included within the scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope defined in the appended claims.

Claims

1. An electronic device comprising: Screen stand; Hinge mechanism, comprising: Back panel, fixed to the screen bracket; A speed reduction assembly includes an input plate and a speed reduction component, the speed reduction component being disposed on the input plate; as well as A friction assembly is disposed between the back plate and the input plate, and the friction assembly is coplanar with the deceleration member; as well as An operating component is connected to the deceleration member, and the rotation center of the operating component coincides with the axis of the back plate and the deceleration member, which are coaxially arranged. The deceleration component has an input end and an output end. The input plate is fixed to the input end, the operating component is fixed to the output end, and the input end is pivotally connected to the back plate. The radial distance from the input terminal to the position where the friction assembly is fixed to the back plate or the input plate is greater than the radial distance from the input terminal to the output terminal.

2. The electronic device according to claim 1, wherein, The friction assembly is located radially outside the deceleration member.

3. The electronic device according to claim 2, wherein, The friction assembly includes a fixed surface, a friction surface, and a force-applying component. The fixed surface is fixed to one of the back plate and the input plate, and the force-applying component is located between the input plate and the back plate, so that the friction surface abuts against the other of the back plate and the input plate.

4. The electronic device according to claim 1, wherein, The friction assembly includes a friction element and a force-applying element. The friction element has a fixed surface and a friction surface. The force-applying element is located between the input plate and the friction element. The force-applying element is a magnet. The back plate is made of ferromagnetic material, so that the friction surface abuts against the back plate.

5. The electronic device according to claim 1, wherein, The friction assembly includes a friction element and a force-applying element. The friction element has a fixed surface and a friction surface. The force-applying element is an elastic element. One end of the elastic element contacts the friction element, and the other end contacts one of the back plate and the input plate, so that the friction surface abuts against the other of the back plate and the input plate.

6. The electronic device according to claim 5, wherein, The back panel has an axially extending eave, the input plate has a positioning post extending radially toward the eave, and the elastic element is sleeved on the positioning post.

7. A hinge mechanism, comprising: Back panel; A speed reduction assembly includes an input plate and a speed reduction component, the speed reduction component having an input end and an output end, the input plate being fixed to the input end, and the input end being pivotally connected to the back plate; and A friction assembly has a fixed surface and a friction surface. The fixed surface is fixed to one of the back plate and the input plate, and the friction surface abuts against the other of the back plate and the input plate. The friction assembly and the deceleration member are coplanar. in, The radial distance from the input terminal to the position where the friction assembly is fixed to the back plate or the input plate is greater than the radial distance from the input terminal to the output terminal.

8. The hinge mechanism according to claim 7, wherein, The reduction component is a planetary gear system, which includes a central gear, a planetary gear set, and a ring gear. The planetary gear set meshes between the central gear and the ring gear. The central gear is connected to the input end, and the ring gear is connected to the output end.

9. The hinge mechanism according to claim 8, wherein, The planetary gear set includes a first gear, a second gear, and a third gear, which mesh between the central gear and the ring gear, respectively.

10. The hinge mechanism according to claim 9, wherein, The friction assembly is located radially outside the deceleration member.

11. The hinge mechanism according to claim 10, wherein, The friction assembly includes a force-applying element located between the input plate and the back plate, such that the friction surface abuts against the other of the back plate and the input plate.

12. The hinge mechanism according to claim 11, wherein, The friction assembly includes a friction element having a fixed surface and a friction surface. A force-applying element is located between the input plate and the friction element. The force-applying element is a magnet. The back plate is made of ferromagnetic material, so that the friction surface abuts against the back plate.

13. The hinge mechanism according to claim 11, wherein, The friction assembly includes a friction element having a fixed surface and a friction surface. The force-applying element is an elastic element, one end of which contacts the friction element and the other end of which contacts one of the back plate and the input plate, so that the friction surface abuts against the other of the back plate and the input plate.

14. The hinge mechanism according to claim 13, wherein, The back panel has an axially extending eave, the input plate has a positioning post extending radially to the eave, and the elastic element is sleeved on the positioning post.

15. A hinge mechanism comprising: Back panel; A speed reduction assembly includes an input plate and a speed reduction member, the speed reduction member having an input end and an output end, the input plate being disposed at the input end and the input end being pivotally connected to the back plate; and A friction assembly is disposed on one of the back plate or the input plate, the friction assembly abuts against the other of the back plate or the input plate, and the friction assembly is coplanar with the deceleration member; The radial distance from the input terminal to the position where the friction assembly is fixed to the back plate or the input plate is greater than the radial distance from the input terminal to the output terminal.

16. The hinge mechanism according to claim 15 further includes a force-applying member, one end of which is fixed to one of the back plate or the input plate, such that the force-applying member clamps the back plate and the input plate.

17. The hinge mechanism according to claim 16, wherein, The reduction component is a planetary gear system, which includes a central gear, a planetary gear set, and a ring gear. The planetary gear set meshes between the central gear and the ring gear. The central gear is connected to the input end, and the ring gear is connected to the output end.

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