A rotating shaft device and electronic equipment

Abstract

A rotating shaft device (40) comprises a rotating adapter (41), a shaft core (42) and a crank slider mechanism (43), wherein the rotating adapter is fixedly connected with a load; the shaft core is fixedly connected with the rotating adapter; the crank slider mechanism acts on the shaft core to provide a torque which partially or completely offsets a gravity moment of the load; a compression spring (434) is arranged in the crank slider mechanism, and the elastic force of the compression spring acts on the shaft core to change with the rotation of the shaft core, so that the torque of the shaft core offsets the gravity moment of the load during the rotation of the shaft core, the load is light during the pitching operation, the occupied space of the rotating shaft device is reduced, and the light and thin demand of the load after the rotating shaft device is installed is realized.

Description

[0001] This application claims priority to Chinese Patent Application No. 202121418820.4, filed on June 24, 2021, entitled “A Shaft Device and Electronic Equipment”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of electronic product technology, and more particularly to a rotating shaft device and an electronic device. Background Technology

[0003] Monitors / all-in-one PCs are becoming increasingly popular in lobbies, reception areas, and homes, leading to higher user demands for slim and sleek designs. For monitors / all-in-one PCs, minimizing the hinge size and concealing it within the stand is key to achieving a slim and sleek overall appearance.

[0004] To achieve a smooth tilt adjustment, traditional monitors / all-in-one PCs often use torsion springs to counteract the screen's gravitational torque. Due to the limitations of this principle, the hinge needs to be positioned in the center or lower part of the screen, resulting in a similar overall form factor. The hinge protrudes from the back of the screen, causing the back of the screen to bulge or the distance between the screen and the stand to be too far, making it difficult to achieve a slim and sleek appearance. Summary of the Invention

[0005] The embodiments of this application provide a rotating shaft device and an electronic device. By setting a crank-slider mechanism on the shaft core and setting a compression spring in the crank-slider mechanism to provide elastic force that changes with the rotation of the shaft, the rotating shaft device provides assistance to counteract the load's gravitational torque. This achieves a light and easy feel for the load's pitch operation while reducing the space occupied by the rotating shaft device and meeting the requirement for a thinner and lighter load after the rotating shaft device is installed.

[0006] In a first aspect, this application provides a rotating shaft device comprising an adapter, at least one shaft core, and a crank-slider mechanism assembly, wherein the adapter is fixedly connected to a load; the shaft core is fixedly connected to the adapter; the crank-slider mechanism assembly includes at least one crank-slider mechanism that acts on the shaft core to provide torque, which partially or completely offsets the gravitational torque of the load; specifically, the crank-slider mechanism includes a bracket, at least one crank, a spring guide assembly, a second support plate, and an elastic assembly, wherein the bracket is connected to the shaft core and is rotatable about the shaft core; the crank is disposed within the bracket and, in its extending direction, one The end and shaft core are fixedly connected; the spring guide assembly includes a first support plate and a guide rod, the first support plate is connected to the other end of the crank in the extension direction and the first support plate is rotatable relative to the crank, and one end of the guide rod in the extension direction is fixedly connected to the first support plate; the second support plate is connected to the bracket and is rotatable relative to the bracket, a sliding groove is provided on the second support plate, and the other end of the guide rod in the extension direction is slidably engaged with the sliding groove; the elastic component includes at least one elastic component, the elastic component is sleeved on the guide rod, is in a compressed state, and one end abuts against the first support plate and the other end abuts against the second support plate.

[0007] The rotating shaft device provided in this application embodiment provides a crank-slider mechanism on the shaft core, and an elastic component is provided in the crank-slider mechanism to provide elastic force that changes with the rotation of the shaft. This allows the rotating shaft device to reduce the space occupied by the rotating shaft device while providing assistance to counteract the load's gravitational torque, thus achieving the requirement of a thinner and lighter load after the rotating shaft device is installed.

[0008] In another possible implementation, the crank-slider mechanism also includes a bushing, which is fixedly fitted onto the guide rod, and the end of the bushing near the second support plate slides into the groove. An elastic structure is fitted onto the outer wall of the bushing so that when the elastic structure changes its compression during the rotation of the shaft core, it prevents the compression spring from rubbing against the outer wall of the guide rod and generating noise.

[0009] Optionally, the elastic structure is a compression spring.

[0010] In another possible implementation, the guide rod includes a guide post and a slide rod, the guide post and the slide rod extending in the same direction, one end of the guide post extending in the direction of extension is fixedly connected to the first support plate, and the other end is fixedly connected to the slide rod, the slide rod passing through the slide groove; a positioning structure is provided on the guide post for positioning the bushing.

[0011] Optionally, the positioning structure is a retaining pin, and the bushing is provided with a retaining hole that matches the retaining pin. The retaining pin and the retaining hole cooperate to fix the bushing on the guide post.

[0012] In another possible implementation, the crank-slider mechanism further includes a spring adjusting bushing; a clearance hole is provided on the second support plate at the position corresponding to the guide rod, the spring adjusting bushing is threaded to the clearance hole, a spring support is provided on the end of the spring adjusting bushing near the elastic structure, the spring support abuts against the elastic structure, the spring adjusting bushing is provided with the groove corresponding to the position of the guide rod, and an adjustment port is provided on the end face of the end of the spring adjusting bushing away from the elastic structure, the elastic force of the elastic structure is adjusted by rotating the spring adjusting bushing through the adjustment port.

[0013] The rotating shaft device of this application embodiment is provided with a spring adjusting bushing, which can adjust the preload of the elastic structure as needed, thereby adjusting the torque of the rotating shaft. At the same time, the spring adjusting bushing is set on the second support plate to facilitate the adjustment of the spring adjusting bushing.

[0014] In another possible implementation, the bracket includes a first support arm, a second support arm, and a third support arm. The second support arm extends in the same direction as the shaft. The first and third support arms are respectively located at opposite ends of the second support arm, and both the first and second support arms extend towards the side closer to the shaft. A first connecting plate is provided on the first support arm, and a second connecting plate is provided on the second connecting arm opposite to the first connecting plate. A first connecting hole is provided on the first connecting plate near the shaft, and a second connecting hole is provided on the second connecting plate opposite to the first connecting hole. The shaft passes through the first and second connecting holes and rotates with them, thus forming a rotating pair between the bracket and the shaft.

[0015] In another possible implementation, a third connecting hole is provided at the end of the first connecting plate away from the shaft core, and a fourth connecting hole is provided on the second connecting plate opposite to the third connecting hole; two first rotating shafts are respectively provided at opposite ends of the second support plate in its extension direction, and the two first rotating shafts pass through the third connecting hole and the fourth connecting hole respectively, and rotate in cooperation with the third connecting hole and the fourth connecting hole, so that the second support plate and the bracket form a rotating pair.

[0016] In another possible implementation, the support is a split structure, including a main support and a secondary support. The main support includes a first support arm and a second support arm, and the secondary support includes a third support arm and a connecting part disposed at one end of the third support arm near the second support arm. The connecting part is fixedly connected to the second support arm, which reduces the manufacturing difficulty of the support on the one hand, and facilitates the assembly of the second support plate with the support on the other hand.

[0017] In another possible implementation, the shaft assembly also includes a damping element disposed on the shaft core to provide damping force; for example, the damping element is a disc spring friction plate or a covered damping element.

[0018] In another possible implementation, at least one shaft core includes a first shaft core and a second shaft core, and the crank-slider mechanism assembly includes a first crank-slider mechanism and a second crank-slider mechanism; the first shaft core and the second shaft core are spaced apart on the adapter, the first crank-slider mechanism acts on the first shaft core to provide torque, and the second crank-slider mechanism acts on the second shaft core to provide torque.

[0019] The rotating shaft device provided in this application embodiment ensures the stability of the rotating shaft device by setting two shaft cores and two crank-slider mechanisms corresponding to the two shaft cores.

[0020] In another possible implementation, at least one crank includes a first crank and a second crank, a guide rod includes a first guide rod and a second guide rod, and an elastic component includes a first elastic structure and a second elastic structure; the first crank and the second crank are spaced apart on the shaft core, a fifth connecting hole is provided on the end of the first crank away from the shaft core, and a sixth connecting hole is provided on the second crank opposite to the fifth connecting hole; a first support plate has two second rotating shafts respectively provided at opposite ends in its extending direction, the two second rotating shafts passing through the fifth connecting hole and the sixth connecting hole respectively, and rotatably engaging with the fifth connecting hole and the sixth connecting hole; the first guide rod and the second guide rod are spaced apart on the first support plate, the first elastic structure is sleeved on the first guide rod, and the second elastic structure is sleeved on the second guide rod.

[0021] Secondly, this application also provides an electronic device, including a support device, a rotating shaft device according to the first aspect, and a display device or all-in-one machine, wherein the end of the bracket away from the shaft core is fixedly connected to the support device, and the adapter is fixedly connected to the display device or all-in-one machine.

[0022] In one possible implementation, the adapter is connected to the display device above the center of gravity of the display device; or, the adapter is connected to the all-in-one machine above the center of gravity of the all-in-one machine. This achieves an eccentric assembly of the hinge with the display device or all-in-one machine, thereby satisfying the large tilt angle of the display device or all-in-one machine without affecting the easy feel of tilting the display device or all-in-one machine.

[0023] In another possible implementation, a receiving cavity is provided at one end of the support device near the display device or all-in-one machine, and the hinge device is placed in the receiving cavity. In this way, the hinge device is hidden in the support device, reducing the distance between the display device or all-in-one machine and the bracket, and achieving a slim appearance effect where the support device is close to the display device or all-in-one machine. Attached Figure Description

[0024] The accompanying drawings used in the description of the embodiments or prior art are briefly introduced below.

[0025] Figure 1 A view of the load using a conventional rotating shaft assembly;

[0026] Figure 2a and Figure 2b A view of the load of the rotating shaft device provided in the embodiments of this application;

[0027] Figure 3a A front view of the rotating shaft device provided in the embodiments of this application;

[0028] Figure 3b A view of the adapter side of the rotating shaft device provided in an embodiment of this application;

[0029] Figure 4 An exploded view of the rotating shaft device provided in the embodiments of this application;

[0030] Figure 5 A schematic diagram of the spring guide assembly of the rotating shaft device provided in the embodiments of this application;

[0031] Figure 6a This is a schematic diagram of the structure of the second support plate of the rotating shaft device provided in the embodiments of this application;

[0032] Figure 6b A view of the second support plate of the rotating shaft device provided in an embodiment of this application from one angle;

[0033] Figure 6c A view of an adjustment port of the spring adjustment bushing of the rotating shaft device provided in the embodiments of this application;

[0034] Figure 6d A view of another adjustment port of the spring adjustment bushing of the rotating shaft device provided in the embodiments of this application;

[0035] Figure 7a A view of a screen using the pivot device provided in the embodiments of this application when the screen is in a vertical angle;

[0036] Figure 7b A view of a screen using the pivot device provided in the embodiments of this application, with the screen positioned at 25°;

[0037] Figure 8 A graph showing the relationship between the load gravitational torque, spring torque, and damping torque for the rotating shaft device provided in the embodiments of this application;

[0038] Figure 9 A chart showing the load pitch operating force range for a rotating shaft device provided in the embodiments of this application. Detailed Implementation

[0039] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0040] In the description of this application, the terms “center,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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 application.

[0041] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation", "connection" and "joining" should be interpreted broadly, for example, they can be fixed connections, detachable connections, mating connections or integral connections; those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0042] To achieve a light and easy pitch adjustment feel, traditional pivot devices 10 typically use torsion springs to counteract the load's gravitational torque. Traditional pivot devices 10 need to be positioned at the center or lower part of the load 20, requiring a significant amount of space, and there is a large gap between the load 20 and the support 30 (see [reference]). Figure 1 This cannot meet users' demand for a thinner and lighter design.

[0043] This application provides a rotating shaft device including an adapter, at least one shaft core, and a crank-slider mechanism assembly. The adapter is fixedly connected to the load; the shaft core is fixedly connected to the adapter; the crank-slider mechanism assembly includes at least one crank-slider mechanism that acts on the shaft core to provide torque, which partially or completely offsets the gravitational torque of the load. An elastic component is provided within the crank-slider mechanism, and the elastic force of the elastic component acts on the shaft core, allowing the elastic force to change with the rotation of the shaft core, ensuring that the torque of the shaft core offsets the gravitational torque of the load during rotation. The rotating shaft device provided in this application, by setting a crank-slider mechanism on the shaft core and providing an elastic component within the crank-slider mechanism to provide elastic force that changes with the rotation of the shaft, enables the rotating shaft device to assist in offsetting the gravitational torque of the load. This achieves a lightweight feel for load pitching operation. Furthermore, the rotating shaft device is eccentrically assembled with the load, for example, with a large eccentricity positioned above the load's center of gravity, satisfying the large pitch angle of the load while reducing the space occupied by the rotating shaft device, thus meeting the requirement for a thinner and lighter load after the rotating shaft device is installed.

[0044] For example, such as Figure 2a and Figure 2b As shown, the pivot device 40 can be set at the upper position of the center of gravity of the load 20 without occupying too much space, so that the gap between the support device 30 and the load 20 is very small, which meets the user's requirements for thinness and lightness. At the same time, since the pivot device 40 is set at the upper position of the center of gravity of the load, the load can have a large elevation angle.

[0045] It is easy to understand that the load can be a display device, such as a television, conference monitor, electronic whiteboard, or any product that requires tilt angle adjustment or pursues a thin and light appearance and easy operation, such as an all-in-one machine or tablet computer. The embodiments of this application do not limit the type of load.

[0046] The following is combined Figures 3a-7b The structure of the rotating shaft device provided in the embodiments of this application is described in detail.

[0047] Figure 3a This is a front view of the rotating shaft device provided in an embodiment of this application. Figure 3a As shown, the rotating shaft device 40 includes an adapter 41, a shaft core 42, and a crank-slider mechanism 43. The adapter 41 is fixedly connected to the load; the shaft core 42 is fixedly connected to the adapter 41; the crank-slider mechanism 43 acts on the shaft core 42 to provide torque, which partially or completely offsets the gravitational torque of the load. An elastic component is provided inside the crank-slider mechanism 43, and the elastic force of the elastic component acts on the shaft core 42 to generate torque in the shaft core 42.

[0048] Understandably, adapters can be fixedly connected to the load in various ways. For example, the adapter can be fixedly connected to the load by fasteners, or the adapter can have multiple connection holes (see...). Figure 3b The adapter and the load are fastened together by threaded holes corresponding to multiple connection holes on the load, and then fastened together by fasteners (e.g., screws and other standard parts); or, the adapter and the load are snapped together, for example, the adapter is provided with several snap-fit ​​posts, and the load is provided with several snap-fit ​​holes corresponding to several snap-fit ​​posts, and the adapter and the load are fixedly connected by snap-fit ​​engagement between the snap-fit ​​posts and snap-fit ​​holes; this application does not limit the connection method of the adapter and the load being fixedly connected, and a suitable connection method can be selected according to the actual situation.

[0049] The elastic component includes at least one elastic structure. Deformation of the elastic structure generates elastic force. For example, the elastic structure can be a spring structure, such as a compression spring or a gas spring. The elastic structure can also be an elastomer, such as a silicone elastomer or a rubber elastomer. The structure of the rotating shaft device is described below using a compression spring as an example of an elastic structure.

[0050] During the load pitch adjustment process, the load movement drives the adapter 41 to move. Since the adapter 41 is fixedly connected to the shaft core 42, the adapter 41 drives the shaft core 42 to rotate. During the rotation of the shaft core 42, the compression amount of the compression spring in the crank-slider mechanism 43 changes and the elastic force changes. Therefore, the elastic force applied to the shaft core 42 by the crank-slider mechanism 43 changes with the rotation of the shaft core 42, and the torque of the shaft core 42 also changes accordingly. During the load pitch process, the torque generated by the compression spring is transmitted to the load through the shaft core. The torque generated by the compression spring always follows and counteracts the gravitational torque of the load, achieving a light and easy feel for the load pitch operation.

[0051] Figure 4 An exploded view of the rotating shaft device provided in an embodiment of this application. Figure 4 As shown, the crank-slider mechanism 43 includes a support (composed of...) Figure 4 The main support 437 and the auxiliary support 438 constitute a main support 437 and an auxiliary support 438, at least one crank 431, and a spring guide assembly (composed of...). Figure 4 The bracket comprises a first support plate 432 and a guide rod 433, a second support plate 436, and at least one compression spring 434; wherein, the bracket is connected to the shaft core 42 and can rotate around the shaft core; the crank 431 is disposed in the bracket, and one end of the crank 431 is fixedly connected to the shaft core 42 in the extending direction, and the other end is connected to the spring guide assembly, which is rotatable relative to the crank 431; the spring guide assembly includes a first support plate 432 and at least one guide rod 433, the first support plate 432 is connected to the other end of the crank 431 in the extending direction, and the first support plate 434 is fixedly connected to the shaft core 42 in the extending direction, and the second end of the crank 431 is fixedly connected to the shaft core 42, and the third end of the crank 431 is fixedly connected to the shaft core 42 in the extending direction, and the fourth end of the crank 431 is fixedly connected to the shaft core 432, and the fifth end of the crank 431 is fixedly connected to the shaft core 432 in the extending direction, and the fifth end of the crank 431 is fixedly connected to the shaft core 432 in the extending direction, and the sixth end of the crank 431 is fixedly connected to the shaft core 432 in the extending direction ... The extension direction of 432 is perpendicular to the extension direction of crank 431, and the first support plate 432 is rotatable relative to crank 431; one end of guide rod 433 in the extension direction is fixedly connected to the first support plate 432; the second support plate 436 is connected to the bracket and is rotatable relative to the bracket, and a sliding groove is provided on the second support plate 436, and the other end of guide rod in the extension direction is slidably engaged with the sliding groove; the compression spring 434 is sleeved on guide rod 433 and is in a compressed state, one end abutting against the first support plate 432, and the other end abutting against the second support plate 436.

[0052] Thus, the shaft core 42 is rotatable relative to the bracket, and the shaft core and the bracket form a revolute joint; the crank 431 is fixed on the shaft core 42 and rotates together with the shaft core 42; the spring guide assembly is rotatably connected to the crank 431, and the spring guide assembly and the crank form a revolute joint; the guide rod 433 passes through the sliding groove provided on the second support plate 436 and slides with the sliding groove; the guide rod 433 and the second support plate 436 form a sliding joint; the second support plate 436 is rotatable relative to the bracket, and the second support plate 436 and the bracket form a revolute joint; thus, the crank 431, the spring guide assembly, the second support plate 436, and the bracket together form a crank-slider mechanism; the compression spring is preloaded and installed between the first support plate 432 and the second support plate 436 to provide an elastic force that varies with the amount of compression.

[0053] In one example, the bracket includes a first support arm, a second support arm, and a third support arm. The second support arm extends in the same direction as the shaft. The first and third support arms are respectively located at opposite ends of the second support arm. Both the first and second support arms extend towards the side closer to the shaft; that is, the bracket is roughly U-shaped.

[0054] Specifically, a first connecting plate 4371 is provided on the first support arm, and a second connecting plate 4381 is provided on the second connecting arm opposite to the first connecting plate 4371. A first connecting hole 43711 is provided at one end of the first connecting plate 4371 near the shaft core 42, and a third connecting hole is provided at the other end away from the shaft core 42. A second connecting hole 43811 and a fourth connecting hole 43812 are provided on the second connecting plate 4381, which are positioned opposite to the first connecting hole 43711 and the third connecting hole. The shaft core 42 passes through the first connecting hole 43711 and the second connecting hole 43811 and is rotatably engaged with the first connecting hole 43711 and the second connecting hole 43811. Connecting parts are provided at both ends of the second support plate 436 in the extending direction. The connecting parts are rotatably engaged with the third connecting hole and the fourth connecting hole 43812, thereby realizing the assembly of the bracket with the shaft core and the second support plate.

[0055] It's easy to understand that the support structure can be a single piece, such as being molded as a single unit or having its second support arm integrally connected to the first and third support arms, for example, through welding, to increase the support's strength; the support structure can also be a modular structure, for example... Figure 4 In the bracket, there are a main bracket 437 and a secondary bracket 438. The main bracket 437 includes a first support arm and a second support arm. The secondary bracket 438 includes a third support arm and a connecting part disposed at one end of the third support arm near the second support arm. The connecting part is fixedly connected to the second support arm. The split structure of the bracket facilitates the assembly of the bracket with the shaft core and the second support plate. For example, the main bracket can be assembled with the shaft core and the second support plate first, then the secondary bracket can be assembled with the shaft core and the second support plate, and finally the main bracket and the secondary bracket can be fixedly connected.

[0056] The main support and the auxiliary support can be connected in various ways, such as by fastening with fasteners, snap-fitting, plugging, etc. The appropriate connection method can be selected according to the actual situation. This application does not limit the connection method of the main support and the auxiliary support.

[0057] Figure 5 A schematic diagram of the spring guide assembly of the rotating shaft device provided in an embodiment of this application. Figure 5As shown, the first support plate 432 in the spring guide assembly is provided with two second rotating shafts 4322 at opposite ends in its extension direction. The second rotating shafts 4322 are used to rotate with the crank. The wall surface 4321 of the first support plate 432 near the guide post serves as the spring support surface and abuts against the compression spring.

[0058] For example, a connecting hole adapted to the second rotating shaft is provided on the crank, and the second rotating shaft passes through the connecting hole to realize the rotational connection between the spring guide assembly and the crank.

[0059] The guide rod includes a guide post 4331 and a slide rod 4332. The guide post 4331 and the slide rod 4332 extend in the same direction. One end of the guide post 4331 is fixedly connected to the first support plate 432 in the extension direction, and the other end is fixedly connected to the slide rod 4332. The slide rod 4332 is used to slide and engage with the groove of the second support plate.

[0060] Back Figure 4 In order to avoid noise caused by friction between the compression spring and the outer wall of the guide rod when the compression amount changes during the rotation of the shaft core, the crank slider mechanism 431 also includes a bushing 439. The bushing 439 is fixedly sleeved on the guide rod 433, and the end of the bushing 439 near the second support plate 436 slides in cooperation with the slide groove. The compression spring 434 is sleeved on the outer wall of the bushing 439.

[0061] To further reduce the noise generated by the movement of the compression spring during the rotation of the shaft, the bushing can be made of non-metallic materials such as silicone or plastic.

[0062] In one example, see [link to example]. Figure 5 A positioning structure 4331 is provided on the guide post 4331 to position the bushing. For example, the positioning structure can be a retaining pin, and the bushing is provided with a retaining hole that matches the retaining pin. The retaining pin and the retaining hole cooperate to fix the bushing on the guide post.

[0063] Figure 6a This is a schematic diagram of the structure of the second support plate of the rotating shaft device provided in an embodiment of this application. Figure 6a As shown, the second support plate is provided with two first rotating shafts 4362 at opposite ends in its extension direction. The first rotating shafts 4362 are used to rotate and engage with the third and fourth connecting holes provided on the bracket to realize the rotational connection between the bracket and the second support plate.

[0064] The second support plate is provided with a clearance hole 4361 at the position corresponding to the slide rod, so that the slide rod can pass through the clearance hole and the slide rod and the second support plate form a sliding pair.

[0065] During the operation of the rotating shaft device, the spring guide assembly rotates in the connecting hole on the crank, the slide rod slides in the clearance hole, and the second support plate rotates in the connecting hole on the bracket. Thus, the crank, the spring guide assembly, the second support plate, and the bracket together form a crank-slider mechanism.

[0066] To adjust the spring force of the compression spring as needed, a spring adjusting bushing 4363 is also provided on the second support plate. The spring adjusting bushing 4363 is threadedly connected to the clearance hole 4361. A spring support part 43631 is provided on the end of the spring adjusting bushing 4363 near the compression spring. The spring support part 43631 abuts against the compression spring. See [reference needed] Figure 6b A sliding groove 43632 is provided on the spring adjusting bushing 4363 corresponding to the position of the sliding rod. An adjusting port 43633 is provided on the end face of the spring adjusting bushing 4363 away from the compression spring. The spring adjusting bushing 4363 is rotated through the adjusting port 43633 to adjust the compression amount of the compression spring, thereby adjusting the elastic force provided by the compression spring.

[0067] For example, the adjusting port of the spring adjusting bushing can have various opening forms, such as a slotted opening (see...). Figure 6b ), cross opening (see) Figure 6c ), external hexagon (see Figure 6d The adjustment port can be in the form of a spring adjusting bushing, and the appropriate adjustment port can be selected as needed. The opening form of the adjustment port of the spring adjusting bushing is not limited in the embodiments of this application.

[0068] The rotating shaft device of this application embodiment is provided with a spring adjusting bushing, which can adjust the preload of the compression spring as needed, thereby adjusting the torque of the rotating shaft. At the same time, the spring adjusting bushing is set on the second support plate, which facilitates the adjustment of the spring adjusting bushing. For example, it can be adjusted from the bottom or side of the second support plate without the need for additional operations such as disassembling the rotating shaft.

[0069] See Figures 3a-4 At least one shaft core 42 includes a first shaft core and a second shaft core, and at least one crank-slider mechanism 43 includes a first crank-slider mechanism and a second crank-slider mechanism. That is, the rotating shaft device includes two shaft cores and crank-slider mechanisms respectively disposed on the two shaft cores.

[0070] The first shaft core and the second shaft core are spaced apart on the adapter 41. The first crank-slider mechanism acts on the first shaft core to provide torque, and the second crank-slider mechanism acts on the second shaft core to provide torque.

[0071] See Figures 3a to 4At least one crank 431 includes a first crank and a second crank; at least one guide rod 433 includes a first guide rod and a second guide rod; at least one compression spring 434 includes a first compression spring and a second compression spring; the first crank and the second crank are spaced apart on the shaft core 42; a fifth connecting hole is provided on the end of the first crank away from the shaft core 42; a sixth connecting hole is provided on the second crank opposite to the fifth connecting hole; two second rotating shafts are provided on the first support plate, which respectively pass through the fifth connecting hole and the sixth connecting hole and are rotatably engaged with the fifth connecting hole and the sixth connecting hole; the first guide rod and the second guide rod are spaced apart on the first support plate 432; the first compression spring is sleeved on the first guide rod; and the second compression spring is sleeved on the second guide rod.

[0072] The rotating shaft device provided in this application embodiment ensures the stability of the rotating shaft device during load rotation by setting two shaft cores and two crank-slider mechanisms corresponding to the two shaft cores.

[0073] In one example, the number of guide rods and compression springs in the first crank-slider mechanism and the second crank-slider mechanism can be the same. For example, the number of guide rods and compression springs in the first crank-slider mechanism and the second crank-slider mechanism can both be two, with the two compression springs respectively sleeved on the two guide rods; or, the number of guide rods and compression springs in the first crank-slider mechanism and the second crank-slider mechanism can both be one, with the compression spring sleeved on the guide rod.

[0074] The number of guide rods and compression springs in the first crank-slider mechanism and the second crank-slider mechanism can also be different. For example, the first crank-slider mechanism has one guide rod and one compression spring, with the compression spring sleeved on the guide rod; the second crank-slider mechanism has two guide rods and two compression springs, with the two compression springs respectively sleeved on the two guide rods.

[0075] In one example, the shaft assembly also includes a damping element 44 disposed on the shaft core to provide damping force (see [reference]). Figure 3a For example, the damping element can be a disc spring friction plate or a covered damping element, etc. The appropriate damping element can be selected as needed, and this application is not limited.

[0076] The working principle of the rotating shaft device in this application embodiment is as follows: taking the screen as the load, the rotating shaft device is located above the center of gravity of the screen, the vertical angle of the screen is 0°, and the working angle is 0° to 25°. In practice, the crank-slider mechanism can be adjusted according to the different installation positions and rotation angles of the screen.

[0077] like Figure 7a and Figure 7bAs shown, taking the screen tilting process from 0° to 25° as an example, in this embodiment, the crank 431, shaft 42, adapter 41, and screen 21 are in fixed relative positions and rotate synchronously during tilt adjustment. During the tilting process, the distance between the screen's center of gravity and the axis of shaft 42 increases, increasing the gravitational torque. During the rotation of crank 431, the first support plate 432 moves along an arc around shaft 42. The guide rod 433 slides relative to the second support plate 436, increasing the relative distance between them. The compression of the spring 434 located between the first and second support plates 432 decreases, reducing its elasticity. The second support plate 436 rotates relative to the main support 437 and the secondary support 438. The direction of the spring force of the spring 434 is always aligned with the guide rod 433. As the spring 434 points upwards, its force arm increases during the tilting process as it acts on the shaft 42 via the crank 431. In this example, the spring arm increases faster than the spring force decreases, resulting in an overall increase in the torque transferred to the shaft 42. This torque is in the same direction as the gravitational torque of the screen 21, but in the opposite direction. Therefore, the spring torque always cancels out the gravitational torque during the tilting process. Similarly, the spring torque always cancels out the gravitational torque during the tilting process. Thus, when adjusting the tilt angle of the screen 21, the user only needs to overcome the damping torque generated by the damping components. The damping torque can be adjusted according to actual needs. Therefore, the screen equipped with the pivot device provided in this embodiment can achieve a convenient tilting operation feel.

[0078] The principle behind achieving extremely small spacing between the screen and support device in this embodiment is as follows: Taking an example where the rotating shaft device is located above the screen's center of gravity, the screen's vertical angle is 0°, and the working angle is 0° to 25°, the crank-slider mechanism can be as follows: Figure 7a As shown in the vertical arrangement, the height of the triangle formed by the support as the long side, crank 431, and guide rod 433 changes little throughout the process. The crank-slider mechanism can achieve a very thin dimension in the height direction of the triangle, thus the pivot device can be hidden between the support device and the screen, enabling the entire device to achieve a slim and lightweight appearance where the support device is tightly attached to the screen. Figure 2a As shown.

[0079] When using the load of the rotating shaft device provided in the embodiments of this application, the spring torque generated by the crank-slider mechanism has the same trend as the gravitational torque of the load (see...). Figure 8 With similar torque values, the pitch operating force of the load fluctuates less, resulting in a generally low operating force. Taking a 6kg load with an eccentricity of 70mm as an example, the theoretical range of pitch operating force is 3–5.5N (see...). Figure 9 ).

[0080] This application also provides an electronic device, which includes a support device, a rotating shaft device according to the above embodiments, and a display device or an all-in-one machine. The end of the bracket away from the shaft core is fixedly connected to the support device, and the adapter is fixedly connected to the display device or all-in-one machine.

[0081] In one possible implementation, the adapter is connected to the display device above the center of gravity of the display device; or, the adapter is connected to the all-in-one machine above the center of gravity of the all-in-one machine. This achieves an eccentric assembly of the hinge with the display device or all-in-one machine, thereby satisfying the large tilt angle of the display device or all-in-one machine without affecting the easy feel of tilting the display device or all-in-one machine.

[0082] In another possible implementation, a receiving cavity is provided at one end of the support device near the display device or all-in-one machine, and the hinge device is placed in the receiving cavity. In this way, the hinge device is hidden in the support device, reducing the distance between the display device or all-in-one machine and the bracket, and achieving a slim appearance effect where the support device is close to the display device or all-in-one machine.

[0083] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A rotating shaft device, characterized in that, include: Adapter, which is fixedly connected to the load; At least one shaft is fixedly connected to the adapter; A crank-slider mechanism assembly, comprising one or more crank-slider mechanisms acting on a shaft to provide torque, said torque partially or completely offsetting the gravitational torque of the load, said crank-slider mechanism comprising: A bracket is connected to the shaft core and can rotate around the shaft core; At least one crank is disposed within the bracket and is fixedly connected at one end of its extending direction to the shaft core; A spring guide assembly includes a first support plate connected to the other end of the crank extending in the same direction and rotatable relative to the crank, and at least one guide rod fixedly connected to the first support plate at one end in its extending direction. A second support plate is connected to the bracket and is rotatable relative to the bracket. A sliding groove is provided on the second support plate, and the other end of the guide rod extending in the direction of extension slides into the sliding groove. The elastic component includes at least one elastic structure, which is sleeved on the guide rod, is in a compressed state, and has one end abutting against the first support plate and the other end abutting against the second support plate. The connection point between the shaft and the adapter is located above the center of gravity of the load, so that the center of gravity of the load is eccentrically set relative to the axis of the shaft.

2. The rotating shaft device according to claim 1, characterized in that, The crank-slider mechanism further includes a bushing, which is fixedly sleeved on the guide rod, and the end of the bushing near the second support plate slides in cooperation with the slide groove. The elastic structure is sleeved on the outer wall of the bushing.

3. The rotating shaft device according to claim 1, characterized in that, The elastic structure is a compression spring.

4. The rotating shaft device according to claim 2, characterized in that, The guide rod includes a guide post and a slide rod. The guide post and the slide rod extend in the same direction. One end of the guide post is fixedly connected to the first support plate, and the other end is fixedly connected to the slide rod. The slide rod passes through the slide groove. The guide post is provided with a positioning structure for positioning the bushing.

5. The rotating shaft device according to claim 4, characterized in that, The positioning structure is a locking pin, and the bushing is provided with a locking hole adapted to the locking pin. The locking pin cooperates with the locking hole to fix the bushing to the guide post.

6. The rotating shaft device according to claim 1, characterized in that, The crank-slider mechanism also includes a spring adjusting bushing; An clearance hole is provided on the second support plate at the position corresponding to the guide rod. The spring adjusting bushing is threaded to the clearance hole. A spring support part is provided on the end of the spring adjusting bushing near the elastic structure. The spring support part abuts against the elastic structure. The sliding groove is provided on the spring adjusting bushing at the position corresponding to the guide rod. An adjustment port is provided on the end face of the spring adjusting bushing away from the elastic structure. The elastic force of the elastic structure is adjusted by rotating the spring adjusting bushing through the adjustment port.

7. The rotating shaft device according to claim 1, characterized in that, The bracket includes a first support arm, a second support arm, and a third support arm. The extension direction of the second support arm is the same as the extension direction of the shaft core. The first support arm and the third support arm are respectively disposed at opposite ends of the second support arm. Both the first support arm and the second support arm extend towards the side closer to the shaft core. A first connecting plate is provided on the first support arm, and a second connecting plate is provided on the second connecting arm opposite to the first connecting plate. A first connecting hole is provided on the first connecting plate near the shaft core, and a second connecting hole is provided on the second connecting plate at a position opposite to the first connecting hole. The shaft core passes through the first connecting hole and the second connecting hole and is rotatably engaged with the first connecting hole and the second connecting hole.

8. The rotating shaft device according to claim 7, characterized in that, A third connecting hole is provided on the end of the first connecting plate away from the shaft core, and a fourth connecting hole is provided on the second connecting plate opposite to the third connecting hole; The second support plate has two first rotating shafts at opposite ends in its extending direction. The two first rotating shafts pass through the third connecting hole and the fourth connecting hole respectively, and are rotatably engaged with the third connecting hole and the fourth connecting hole.

9. The rotating shaft device according to claim 8, characterized in that, The bracket is a split structure, including a main bracket and a secondary bracket. The main bracket includes a first support arm and a second support arm. The secondary bracket includes a third support arm and a connecting part disposed at one end of the third support arm near the second support arm. The connecting part is fixedly connected to the second support arm.

10. The rotating shaft device according to claim 1, characterized in that, The rotating shaft device also includes a damping element disposed on the shaft core to provide damping force.

11. The rotating shaft device according to any one of claims 1-10, characterized in that, The at least one shaft core includes a first shaft core and a second shaft core, and the crank-slider mechanism assembly includes a first crank-slider mechanism and a second crank-slider mechanism. The first shaft and the second shaft are spaced apart on the adapter. The first crank-slider mechanism acts on the first shaft to provide torque, and the second crank-slider mechanism acts on the second shaft to provide torque.

12. The rotating shaft device according to any one of claims 1-10, characterized in that, The at least one crank includes a first crank and a second crank, the at least one guide rod includes a first guide rod and a second guide rod, and the elastic component includes a first elastic structure and a second elastic structure; The first crank and the second crank are spaced apart on the shaft core. The first crank has a fifth connecting hole at the end away from the shaft core, and the second crank has a sixth connecting hole opposite to the fifth connecting hole. The first support plate has two second rotating shafts at opposite ends in its extending direction. The two second rotating shafts pass through the fifth connecting hole and the sixth connecting hole respectively and are rotatably engaged with the fifth connecting hole and the sixth connecting hole. The first guide rod and the second guide rod are spaced apart on the first support plate, the first elastic structure is sleeved on the first guide rod, and the second elastic structure is sleeved on the second guide rod.

13. An electronic device, characterized in that, It includes a support device, a rotating shaft device as described in any one of claims 1-12, and a display device or all-in-one machine, wherein the end of the bracket away from the shaft core is fixedly connected to the support device, and the adapter is fixedly connected to the display device or all-in-one machine.

14. The electronic device according to claim 13, characterized in that, The adapter is connected to the display device at a position above the center of gravity of the display device; or, the adapter is connected to the all-in-one machine at a position above the center of gravity of the all-in-one machine.

15. The electronic device according to claim 13 or 14, characterized in that, The support device has a receiving cavity at one end near the display device or all-in-one machine, and the rotating shaft device is placed in the receiving cavity.

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