Rotating shaft device, electronic device and housing

Abstract

This application provides a rotating shaft device, an electronic device, and a housing. The rotating shaft device has an open state and a closed state. The rotating shaft device includes a base, a support frame, a first shaft core, a second shaft core, and a first bushing assembly. The support frame is rotatably connected to the base so that the support frame can open or close relative to the base. The first shaft core is fixed to the support frame. The second shaft core is slidably connected to the base. A first end of the first bushing assembly is sleeved on the first shaft core and can rotate relative to the first shaft core. A second end of the first bushing assembly is sleeved on the second shaft core and can rotate relative to the second shaft core. The two ends of the first bushing assembly respectively interfere with the first shaft core and the second shaft core, so that during the switching between the open and closed states of the rotating shaft device, the first bushing assembly, the first shaft core, and the second shaft core provide torque to the rotating shaft device. The rotating shaft device provided by this application can provide a large torque, stably support the electronic device, and meet the requirements for large-angle support.

Description

Technical Field

[0001] This application relates to the field of electronic devices, and in particular to a rotating shaft device, electronic device and housing. Background Technology

[0002] Mobile electronic devices are ubiquitous in various office and daily life scenarios. With the continuous development of electronic devices, users' needs for their use are becoming increasingly diverse. To enhance the user experience, a rotatable hinge mechanism is being added to electronic devices, allowing the hinge to support the device at specific angles, thus meeting users' needs in different scenarios.

[0003] The hinge mechanism requires torque to generate damping when supporting electronic devices, preventing it from tipping over due to the weight of the devices. However, current hinge mechanisms provide relatively little torque, making it difficult to meet the requirements for large-angle support and to maintain a stable angle during the support of electronic devices. Summary of the Invention

[0004] This application provides a rotating shaft device, an electronic device, and a housing.

[0005] In a first aspect, embodiments of this application provide a rotating shaft device having an open state and a closed state. The rotating shaft device includes a base, a support frame, a first shaft core, a second shaft core, and a first bushing assembly. The support frame is rotatably connected to the base so that the support frame can open or close relative to the base. The first shaft core is fixed to the support frame. The second shaft core is slidably connected to the base. A first end of the first bushing assembly is sleeved on the first shaft core and can rotate relative to the first shaft core, and a second end of the first bushing assembly is sleeved on the second shaft core and can rotate relative to the second shaft core. The two ends of the first bushing assembly respectively interfere with the first shaft core and the second shaft core, so that during the switching between the open state and the closed state of the rotating shaft device, the first bushing assembly, the first shaft core, and the second shaft core provide torque to the rotating shaft device.

[0006] In this implementation, the opening and closing of the support frame relative to the base corresponds to the open and closed states of the rotating shaft device. The rotating shaft device is fixedly connected to the support member via the support frame. The user applies a force to the support member, causing the support frame to rotate relative to the base, thereby switching the rotating shaft device between the open and closed states.

[0007] In this implementation, the first bushing assembly is rotatable relative to the support frame and the base. Both ends of the first bushing assembly are hollow. A first shaft core and a second shaft core respectively support the two ends of the first bushing assembly. The inner walls of both ends of the first bushing assembly are in interference fit with the outer walls of the first and second shaft cores, respectively. Interference fit refers to an interference fit or a fit that generates torque or friction. When the first end of the first bushing assembly is in interference fit with the first shaft core, the first end of the first bushing assembly and the first shaft core can still rotate relative to each other. However, the first end of the first bushing assembly needs to apply a force to the support frame when rotating relative to the first shaft core. The interference fit between the first end of the first bushing assembly and the first shaft core provides torque so that they can maintain the required opening and closing angle during relative rotation. The second end of the first bushing assembly is similar to the second shaft core.

[0008] In this application, compared to providing torque only at the first shaft core, the rotating shaft device in this application provides torque at two points. The torque is provided through interference cooperation at the two ends of the first bushing assembly where it connects to the first and second shaft cores, thus increasing the overall torque. On the one hand, the increased overall torque increases the resistance experienced by the user when pushing the support, allowing the user to more precisely control the opening and closing angle and meet the user's needs in different scenarios. On the other hand, after the user determines the opening and closing angle of the electronic device, the large torque of the rotating shaft device makes it difficult for the opening and closing angle of the electronic device to change. That is, the rotating shaft device can stably support the electronic device and is not easy to tip over even at a large opening and closing angle, which helps to prevent damage to the electronic device.

[0009] In one implementation, the center of rotation of the support frame about the base is denoted as a virtual central axis, and the first and second core shafts are parallel to the virtual central axis. Along a first direction, the first core shaft is located between the second core shaft and the virtual central axis, and the first direction is perpendicular to the virtual central axis and parallel to the surface of the base facing the support frame.

[0010] In this implementation, the solution provides a layout of a first shaft core, a second shaft core, and a virtual central shaft, and there are two locations in the rotating shaft device that can provide torque, which helps to enhance the stability of the rotating shaft device when supporting electronic equipment.

[0011] In one implementation, the second shaft core is located between the first shaft core and the virtual central shaft. This solution provides an arrangement of the first shaft core, the second shaft core, and the virtual central shaft, and provides torque at two locations within the rotating shaft device, which helps enhance the stability of the rotating shaft device when supporting electronic devices.

[0012] In one implementation, the virtual central axis is located between the first axis core and the second axis core along the first direction. This solution provides an arrangement of the first axis core, the second axis core, and the virtual central axis, and provides torque at two locations in the pivot device, which helps to enhance the stability of the pivot device when supporting electronic devices.

[0013] In one implementation, the first shaft core coincides with the virtual central axis in the first direction, and the second shaft core is spaced apart from the virtual central axis along the first direction. This solution provides a layout of the first shaft core, the second shaft core, and the virtual central axis, and provides two locations in the pivot device where torque can be provided, which helps to enhance the stability of the pivot device when supporting electronic devices.

[0014] In one implementation, the first bushing assembly includes a first bushing and a second bushing fixed to each other. The first bushing is fitted onto the first shaft core and can rotate relative to the first shaft core, interfering with it. The second bushing is fitted onto the second shaft core and can rotate relative to the second shaft core, interfering with it. In this implementation, the first bushing and the second bushing are fixedly connected. During the opening and closing of the rotating shaft device, the first bushing and the second bushing can maintain synchronous movement or remain stationary, which helps to ensure the smoothness of the movement of the first bushing assembly, thereby improving the stability of the rotating shaft device when supporting electronic equipment. The interference fit between the first bushing and the first shaft core allows the first bushing to generate torque during rotation relative to the first shaft core, and the same applies to the second bushing and the second shaft core. Both the first and second bushings can provide torque in the rotating shaft device, which helps to increase the total torque provided by the rotating shaft device during opening and closing, enabling the rotating shaft device to stably support electronic equipment at the angle set by the user.

[0015] In one implementation, the first bushing assembly further includes a first connecting rod, which connects the first bushing and the second bushing, and the extension direction of the first connecting rod is perpendicular to the axial direction of the first bushing. In this implementation, the first bushing is fixedly connected to the second bushing via the first connecting rod, and the first connecting rod is used to transmit power from the first bushing to the second bushing, enabling the entire first bushing assembly to rotate. In another implementation, the first bushing, the first connecting rod, and the second bushing are integrally formed. This implementation helps to improve the overall structural stability of the first bushing assembly.

[0016] In one implementation, the support frame includes a clearance hole that extends through the support frame, and a portion of the first bushing is located within the clearance hole. This solution can reduce the size of the rotating shaft device, which is beneficial for miniaturization design.

[0017] In one implementation, the support frame further includes a first shaft mounting hole located at both ends of the support frame along a second direction. The first shaft includes a first end and a second end disposed opposite to each other, and both the first end and the second end of the first shaft are flatly engaged with the first shaft mounting hole to remain relatively fixed. In this implementation, the second direction is the width direction of the rotating shaft device. The portion between the first end and the second end of the first shaft interferes with the first bushing, and the first end and the second end of the first shaft are flatly engaged with the first shaft mounting hole to remain relatively fixed.

[0018] Taking the first end of the first shaft core as an example, the flat fit means that the outer wall of the first end of the first shaft core and the inner wall of the first shaft core mounting hole are respectively provided with a flat part, which contacts each other, so that there is no relative movement between the first end of the first shaft core and the first shaft core mounting hole. Specifically, the first shaft core mounting hole is racetrack-shaped and has two opposing planes on its inner surface. The first end and the second end of the first shaft core also have two opposing planes on their outer peripheral surfaces. When the first end and the second end of the first shaft core are located in the first shaft core mounting hole, the planes on the outer peripheral surfaces of the first end and the second end fit together with the planes on the inner surface of the first shaft core mounting hole, so that both the first end and the second end of the first shaft core are in flat fit with the first shaft core mounting hole.

[0019] In one implementation, the first bushing has a first opening penetrating through the inner and outer surfaces of the first bushing, and the first opening extends axially along the first bushing. In this implementation, the first bushing is not a closed cylindrical shape. Due to the interference fit between the first bushing and the first shaft core, the first bushing will experience certain resistance when rotating relative to the first shaft core. This solution provides a first opening in the first bushing, which helps to increase the rotation range of the first bushing relative to the first shaft core. In addition, the first opening can also increase the elasticity of the first bushing.

[0020] In one implementation, the second bushing has a second opening penetrating its inner and outer surfaces, extending axially along the second bushing. When the first bushing has a first opening and the second bushing has a second opening, the first and second openings can open in different directions. In this implementation, the second bushing is not a closed cylinder. Due to the interference fit between the second bushing and the second shaft core, the second bushing experiences resistance when rotating relative to the second shaft core. This solution provides a second opening in the second bushing, which helps to increase the rotation range of the second bushing relative to the second shaft core.

[0021] In one implementation, the inner surface of the first bushing has a first bushing planar portion, and the outer surface of the first shaft core has a first shaft core planar portion parallel to the bushing planar portion. In the closed state, the first bushing planar portion and the first shaft core planar portion are arranged opposite to each other. In this implementation, the first bushing planar portion matches the first shaft core planar portion, and in the closed state, both the first bushing planar portion and the first shaft core planar portion are parallel to the bottom of the base. When the rotating shaft device is in the closed state, it is necessary to prevent relative rotation between the first bushing and the first shaft core. Therefore, this solution provides the first bushing planar portion and the first shaft core planar portion, which can limit the first bushing and the first shaft core in the circumferential direction, thereby achieving locking of the rotating shaft device in the closed state.

[0022] In one implementation, the inner surface of the first bushing has a first bushing planar portion, and the outer surface of the first shaft core also has an opening and locking planar portion. In the closed state, the first bushing planar portion and the opening and locking planar portion are spaced apart. In the open state, the first bushing planar portion and the opening and locking planar portion are positioned opposite each other. In this implementation, during the process of the rotating shaft device changing from the closed state to the open state, when the first bushing planar portion rotates to be parallel to the opening and locking planar portion, the rotating shaft device locks and remains at that opening angle, so that the rotating shaft device can be stably maintained in the open state.

[0023] In one implementation, in the closed state, there is an included angle between the planar portion of the first bushing and the planar portion of the first shaft core. During the transition of the rotating shaft device from the closed state to the open state, when the planar portion of the first bushing rotates to be parallel with the planar portion of the first shaft core, the rotating shaft device locks itself and remains at that opening angle, allowing the rotating shaft device to be stably maintained in the open state. This solution can lock the rotating shaft device at a specific angle during the opening process, enabling the rotating shaft device to meet the usage requirements of different scenarios.

[0024] In one implementation, the first bushing, the first connecting rod, and the second bushing are sheet metal parts or metal injection molded parts. In this implementation, sheet metal processing is used, simplifying the machining process for the first bushing, the first connecting rod, and the second bushing, and facilitating mass production. Metal injection molding technology offers advantages such as high efficiency, low cost, and high precision; using metal injection molding technology, the first bushing, the first connecting rod, and the second bushing can be manufactured quickly and accurately.

[0025] In one implementation, the second shaft core and the base are in an interference fit, causing torque to be generated during the relative sliding process of the second shaft core and the base. In this implementation, during the sliding process of the second shaft core, the frictional force between the second shaft core and the base can be used to increase the total torque provided by the rotating shaft device, which helps to ensure that the rotating shaft device is stably maintained at a specific angle.

[0026] In one implementation, the second shaft core slides relative to the base along a first direction, which intersects the axis of the second shaft core. In this implementation, the first direction is the length direction of the rotating shaft device. Sliding the second shaft core along the first direction effectively utilizes the length dimension of the rotating shaft device, which helps to reduce the volume of the rotating shaft device.

[0027] In one implementation, the second shaft core slides relative to the base in a direction that has a component of the first direction and slides linearly. In this implementation, the direction in which the second shaft core slides relative to the base intersects with the first direction, increasing the sliding distance and improving the sliding torque. This effectively utilizes the length dimension of the shaft device and helps to reduce the volume of the shaft device.

[0028] In one implementation, the second shaft core slides relative to the base in an arcuate direction, the arcuate direction having a component along the first direction. In this implementation, the second shaft core can slide relative to the base in an arcuate direction, which increases the sliding distance and improves the sliding torque compared to the first direction. This effectively utilizes the length dimension of the shaft device and helps to reduce the volume of the shaft device.

[0029] In one implementation, the rotating shaft device further includes two sliders, which are respectively fixed to both ends of the second shaft core along a second direction. The base includes two support plates arranged and spaced apart along the second direction. The two sliders and the second shaft core are located between the two support plates along the second direction. The sliders and support plates arranged on the same side along the second direction are slidably connected and can slide relative to each other. The second direction is parallel to the axis of the second shaft core. In this implementation, the opposite ends of the two sliders along the second direction are fixedly connected to the two ends of the second shaft core along the second direction, and the opposite ends of the two sliders along the second direction can be slidably connected to the two support plates respectively, so that the two sliders and the second shaft core can slide relative to the two support plates. In this implementation, the second shaft core also has an interference fit with a second bushing. The second bushing can transmit power to the second shaft core, thereby driving the second shaft core to slide relative to the base.

[0030] In one implementation, in the slider and the support plate arranged on the same side along the second direction, the support plate has a protrusion on the side facing the slider along the second direction, and the slider has a groove on the side facing the support plate. The protrusion is located within the groove and can slide relative to it. In this implementation, the protruding direction of the protrusion is the same as the concave direction of the first groove, and the shapes of the protrusion and the first groove match. The slider and the support plate are slidably connected through the engagement of the first groove and the protrusion. This solution achieves a sliding connection through a convex-concave fit, resulting in a simple structure that is easy to manufacture.

[0031] In one implementation, the extension directions of the protrusion and the first groove are parallel to the first direction, so that the second shaft core slides relative to the base along the first direction, which can effectively utilize the length dimension of the rotating shaft device and help reduce the volume of the rotating shaft device.

[0032] In one implementation, the protrusion and the groove wall of the first groove are in an interference fit. In this implementation, the interference fit between the protrusion and the first groove means that the protrusion experiences a certain frictional resistance during relative sliding, which increases the torque and improves the stability of the rotating shaft device. In this implementation, the interference fit between the protrusion and the groove wall of the first groove allows indirect contact and interference fit between the second shaft core and the base.

[0033] In one implementation, the base includes two support plates spaced apart along the second direction. Each support plate has a base groove. The two ends of the second shaft core pass through the base groove along the second direction, and the base groove extends along the first direction. The second shaft core slides within the base groove along the first direction, thereby enabling the first bushing assembly to slide relative to the base along the first direction.

[0034] In this implementation, the base groove penetrates both end faces of the support plate along the second direction, and extends along the first direction, allowing one end of the second shaft core located within the base groove to slide along the first direction. Since the first direction is the length direction of the rotating shaft device, setting the second shaft core to slide along the first direction effectively utilizes the length dimension of the rotating shaft device. The second shaft core interferes with the other end of the first bushing assembly, allowing the second shaft core to slide relative to the base along the first direction, thus enabling the first bushing assembly to slide along the first direction.

[0035] In one implementation, the second shaft core and the inner wall of the base groove are in interference fit. In this implementation, the friction between the second shaft core and the base groove can be used to increase the total torque provided by the rotating shaft device, thereby improving the stability of the rotating shaft device. In this implementation, the second shaft core and the base are in direct contact and interference fit through the interference fit between the second shaft core and the inner wall of the base groove.

[0036] In one implementation, the base includes two support plates arranged and spaced apart along the second direction. One end of the support frame is located between the two support plates, and the other end of the support frame is rotatably connected to both sides of the two support plates along the second direction. The second direction is parallel to the first axis. In this implementation, one end of the support frame along the first direction is located between the two support plates. The rotatable connection of one end of the support frame along the first direction to the two support plates allows the support frame to rotate relative to the base.

[0037] In one implementation, the two support plates of the base are respectively in interference fit with the support frame. In this implementation, the interference fit between the support plates and the support frame allows the frictional force of the support frame rotating relative to the support plates to be used to increase the total torque provided by the rotating shaft device.

[0038] In one implementation, the rotating shaft device further includes a slide plate and a shaft core fixing member that are fixedly connected. The base includes two support plates arranged and spaced apart along a second direction, the second direction being parallel to the axis of the second shaft core. Each support plate has a groove on its inner sidewall. The two ends of the slide plate along the second direction are located in the groove and can slide relative to the groove. Part of the second shaft core is fixed to the shaft core fixing member, and part of the second shaft core is rotatably connected to the second end of the first bushing assembly.

[0039] In this implementation, the second grooves of the two support plates are arranged opposite to each other, and the sliding plate is located between the two second grooves. Both ends of the sliding plate slide within the second grooves along their extending direction. Part of the second shaft core is fixed to the shaft core fixing member, and part of the second shaft core is rotatably connected to the second end of the first shaft sleeve assembly. That is, the second shaft core is fixed relative to the shaft core fixing member, and the second end of the first shaft sleeve assembly can rotate relative to the second shaft core. The first end of the first shaft sleeve assembly is fitted onto the first shaft core and can rotate relative to the first shaft core. The rotating shaft device in this implementation has a compact structure, which helps to reduce the size of the rotating shaft device.

[0040] In one implementation, the slide plate and the second groove of the support plate are in an interference fit. In this implementation, the interference fit between the slide plate and the second groove of the support plate causes indirect contact between the second shaft core and the base. This solution allows the friction force of the slide plate sliding in the second groove to be used to increase the total torque provided by the rotating shaft device.

[0041] In one implementation, a portion of the second shaft core interferes with the second end of the first bushing assembly. This design allows the frictional force generated when the second end of the first bushing assembly rotates relative to the portion of the second shaft core to enhance the total torque provided by the rotating shaft device.

[0042] In one implementation, the second groove extends along a first direction, allowing the slide plate to slide relative to the base along the first direction. In this implementation, the slide plate's ability to slide relative to the base along the first direction effectively utilizes the length dimension of the rotating shaft device, thus reducing its volume.

[0043] In one implementation, the second groove extends along a fourth direction, which is a straight line and has a component along the first direction. In this implementation, the slide plate can slide relative to the base along the first direction, effectively utilizing the length dimension of the rotating shaft device and helping to reduce the volume of the rotating shaft device.

[0044] In one implementation, the second groove extends along an arcuate direction, which has a component along the first direction. In this implementation, the slide plate can slide relative to the base along the first direction, effectively utilizing the length dimension of the rotating shaft device and helping to reduce the volume of the rotating shaft device.

[0045] In one implementation, the rotating shaft device further includes a slider with a through hole extending through the slider along a second direction. A second shaft core passes through the through hole and is fixed to the slider, with both ends of the second shaft core extending out of the through hole. A second end of the first bushing assembly is fitted onto at least one end of the second shaft core and is rotatable relative to the second shaft core. The base includes a support plate extending along a first direction. The slider has a sliding groove opening toward the support plate. The support plate passes through the sliding groove along the first direction, and the slider is slidable relative to the support plate. The first direction intersects the second direction, and the second direction is parallel to the axis of the second shaft core.

[0046] In this implementation, the through hole penetrates both end faces of the slider along the second direction, and the portion between the two ends of the second shaft core is fixedly connected to the slider through the through hole. The second end of the first bushing assembly is sleeved on at least one end of the second shaft core, thereby realizing the rotational connection between the second end of the first bushing assembly and the second shaft core.

[0047] In this implementation, the base has only one support plate, and the overall structure is a ribbed design. The end of the slider facing the support plate is engaged with the support plate, allowing the support plate to pass through the sliding groove without detaching from it, thus achieving a sliding connection between the slider and the support plate along a first direction. The sliding groove communicates with a through hole and slides along the extension direction of the support plate. The portion of the second shaft located in the through hole is fixedly connected to the slider, and both ends of the second shaft are rotatably connected to the second end of the first bushing assembly, allowing the second end of the first bushing assembly to slide relative to the support plate.

[0048] In one implementation, there is an interference fit at least one of the following: between the second shaft core and the inner wall of the through hole; between the support plate and the inner wall of the sliding groove of the slider; or between the second end of the first bushing assembly and the second shaft core. In this implementation, the interference fit between the second shaft core and the base is achieved through indirect contact. This solution is beneficial for increasing the torque of the rotating shaft device, thereby improving the support stability of the rotating shaft device.

[0049] In one implementation, the support frame and the base are interfering with each other, causing torque to be generated during relative rotation of the support frame and the base. In this implementation, the support frame and the base can rotate relative to each other, and their interfering cooperation allows the frictional force of the support frame when rotating relative to the base to provide a certain torque. This increases the total torque provided by the rotating shaft device without increasing its size, thereby enhancing the stability of the rotating shaft device when supporting electronic equipment.

[0050] In one implementation, the rotating shaft device further includes a first rotating member and a second rotating member. The first rotating member is fixedly connected to the support frame, and the second rotating member is fixedly connected to the base. The support frame is rotatably connected to the base through the cooperation of the first rotating member and the second rotating member.

[0051] In this implementation, the first rotating member is located on the side of the support frame facing the support plate, and the second rotating member is located on the inner side of the support plate. The support frame rotates relative to the base, causing the first rotating member to rotate relative to the second rotating member.

[0052] In one implementation, the first rotating member includes grooves at both ends along the second direction, and the second rotating member is a sliding protrusion. The shapes of the grooves and the sliding protrusions match, and the first and second rotating members cooperate with each other. This solution facilitates the rotational connection between the support frame and the base.

[0053] In one implementation, the first rotating component is integrally formed with the support frame, and the second rotating component is integrally formed with the base. This implementation helps to improve the stability of the rotatable connection between the support frame and the base.

[0054] In one implementation, the first rotating member and the second rotating member are in an interference fit. In this implementation, the frictional force between the first and second rotating members during their relative rotation provides torque, thereby increasing the total torque of the rotating shaft assembly without increasing its volume. In this implementation, the support frame and base are also in an interference fit through the interference fit between the first and second rotating members.

[0055] In one implementation, the surface of the first rotating member facing away from the support frame has a groove, and the surface of the support frame facing the base has a buckle. The buckle is engaged in the groove, thereby fixing the first rotating member and the support frame relatively. In this implementation, the buckle and groove further enhance the connection stability between the first rotating member and the support frame.

[0056] In one implementation, the second rotating member includes two arc-shaped sliding grooves, the curvature centers of the two sliding grooves being located on the same side and away from the bottom of the base, and the first rotating member includes two arc-shaped sliding protrusions, the two sliding protrusions being located in the two sliding grooves respectively and being able to slide relative to the sliding grooves.

[0057] In this implementation, an additional first slide groove and another first sliding protrusion are added to the first slide groove and the first sliding protrusion. In actual processing, the curvature of the first slide groove and the first slide groove can be adjusted by designing tolerance matching, so that the first rotating part and the second rotating part can easily achieve interference fit. That is, when the first rotating part rotates in the second rotating part, the friction force generated is large, which can provide torque and is conducive to more precise control of the movement gap.

[0058] In one implementation, the first rotating member includes a first slide block and a second slide block. The first slide block includes a receiving groove that is opposite to the bottom opening of the base. The second slide block is located in the receiving groove and is rotatable relative to the first slide block. The first slide block is rotatably connected to the base, and the second slide block is fixed to the support frame.

[0059] In this implementation, the outer walls at both ends of the second slide block along the second direction can rotate relative to the first receiving groove of the first slide block along the inner wall of the second direction, and the outer walls at both ends of the first slide block along the second direction can rotate relative to the base along the inner wall of the second direction. That is, the second slide block can rotate relative to the base in two stages, which helps to increase the opening and closing angle of the second slide block. The second slide block is fixedly connected to the support frame. Since the unfolding and closing of the support frame corresponds to the open and closed states of the rotating shaft device, the opening and closing angle of the second slide block is increased, which in turn helps to increase the opening and closing angle of the support frame. This allows the rotating shaft device to unfold to a larger angle, meeting the application needs of different scenarios.

[0060] In one implementation, the second rotating component of the base is a second sliding groove located inside the base, and the second sliding groove is arc-shaped. The first slide block has second sliding protrusions corresponding to both ends along the second direction. The second sliding groove and the second sliding protrusions cooperate to achieve a rotational connection between the base and the first slide block. In one implementation, the number of the second sliding groove and the second sliding protrusion can both be one or two.

[0061] In one implementation, the inner walls of the first receiving groove at both ends along the second direction are provided with third sliding grooves, and the outer wall of the second slide block along the second direction is provided with third sliding protrusions. The third sliding grooves and the third sliding protrusions cooperate with each other. This solution can realize the rotational connection between the first slide block and the second slide block.

[0062] In one implementation, the base and the first slide rail block are in an interference fit. This solution is beneficial for increasing friction, thereby improving torque. In this implementation, the interference fit between the base and the support frame is achieved through the interference fit between the base and the first slide rail block.

[0063] In one implementation, the first slide block and the second slide block are in an interference fit. This solution is beneficial for increasing friction, thereby improving torque.

[0064] In one implementation, there is an interference fit between the base and the first slide block, and an interference fit between the first slide block and the second slide block. In this solution, the torque is increased through two levels of interference fit.

[0065] In one implementation, a first clearance slot is provided within the second receiving groove, and a second clearance slot is provided at one end of the support frame adjacent to the second slide rail block. The first and second clearance slots cooperate to form a clearance groove. The first shaft core passes through the first end of the first bushing assembly, and both ends of the first end are respectively located within the clearance groove formed by the first and second clearance slots. This ensures that one end of the support frame, the first end of the first bushing assembly, and the first shaft core are located within the second receiving groove of the second slide rail block. This design results in a smaller size for the rotating shaft device.

[0066] In one implementation, the rotating shaft device further includes a second bushing assembly, a third shaft core, and a fourth shaft core. The first bushing assembly and the second bushing assembly are located on opposite sides of the rotation center of the support frame rotating around the base. The third shaft core is fixed to the support frame, and the fourth shaft core is slidably connected to the base. A first end of the second bushing assembly is sleeved on the third shaft core and is rotatable relative to the third shaft core. A second end of the second bushing assembly is sleeved on the fourth shaft core and is rotatable relative to the fourth shaft core. Both ends of the second bushing assembly interfere with the third shaft core and the fourth shaft core, respectively, so that during the switching between the open state and the closed state of the rotating shaft device, the second bushing assembly, the third shaft core, and the fourth shaft core are used to provide torque to the rotating shaft device.

[0067] In this implementation, the first and third shaft cores are fixed to the support frame at both ends, while the second and fourth shaft cores are slidably connected to the base. The second bushing assembly includes a third bushing, a fourth bushing, and a second connecting rod, with the second connecting rod connecting the third and fourth bushings. The third bushing is located at the first end of the second bushing assembly, and is fitted onto the third shaft core, allowing it to rotate relative to and interfere with the third shaft core. The fourth bushing is located at the second end of the second bushing assembly, and is fitted onto the fourth shaft core, allowing it to rotate relative to and interfere with the fourth shaft core. The second connecting rod transmits power from the third bushing to the fourth bushing, enabling the entire second bushing assembly to rotate. The interference fit between the third bushing and the third shaft core, and between the fourth bushing and the fourth shaft core, allows the friction generated when the third shaft core rotates relative to the third bushing and the fourth shaft core rotates relative to the fourth bushing to enhance the torque provided by the rotating shaft device, thereby improving the stability of the rotating shaft device when supporting electronic equipment.

[0068] In one implementation, the third bushing, the second connecting rod, and the fourth bushing are integrally formed. This solution helps improve the overall structural stability of the second bushing assembly.

[0069] In one implementation, the third bushing has a third opening penetrating its inner and outer surfaces, extending axially along the third bushing. This third opening in the third bushing improves the rotational range of the third bushing relative to the third shaft core. Furthermore, the third opening increases the elasticity of the third bushing and reduces the contact area between the third shaft core and the third bushing, thereby reducing wear between them and extending the service life of the third bushing assembly.

[0070] In one implementation, the fourth bushing has a fourth opening penetrating its inner and outer surfaces, extending axially along the fourth bushing. This fourth opening in the fourth bushing improves the rotational range of the fourth bushing relative to the fourth shaft core. Furthermore, the fourth opening increases the elasticity of the fourth bushing and reduces the contact area between the fourth shaft core and the fourth bushing, thereby reducing wear between them and extending the service life of the fourth bushing assembly.

[0071] In one implementation, the inner surface of the third bushing has a third bushing planar portion, and the outer surface of the third shaft core has a third shaft core planar portion parallel to the third bushing planar portion. In the closed state, the third bushing planar portion and the third shaft core planar portion are arranged opposite to each other. In this implementation, the third bushing planar portion and the third shaft core planar portion match, and in the closed state, both the third bushing planar portion and the third shaft core planar portion are parallel to the bottom of the base. When the rotating shaft device is in the closed state, it is necessary to prevent relative rotation between the third bushing and the third shaft core. Therefore, this solution provides a third bushing planar portion and a third shaft core planar portion, which can limit the third bushing and the third shaft core in the circumferential direction, thereby achieving locking of the rotating shaft device in the closed state.

[0072] In one implementation, the inner surface of the fourth bushing has a fourth bushing planar portion, and the outer surface of the fourth shaft core has a fourth shaft core planar portion parallel to the fourth bushing planar portion. In the closed state, the fourth bushing planar portion and the fourth shaft core planar portion are arranged opposite to each other. In this implementation, the fourth bushing planar portion and the fourth shaft core planar portion match, and in the closed state, both the fourth bushing planar portion and the fourth shaft core planar portion are parallel to the bottom of the base. When the rotating shaft device is in the closed state, it is necessary to prevent relative rotation between the fourth bushing and the fourth shaft core. Therefore, this solution provides the fourth bushing planar portion and the fourth shaft core planar portion, which can limit the fourth bushing and the fourth shaft core in the circumferential direction, thereby achieving locking of the rotating shaft device in the closed state.

[0073] In one implementation, the base includes a first support plate and a second support plate arranged and spaced apart along a second direction. Both the first support plate and the second support plate are provided with a first base groove and a second base groove. A second rotating member is located between the first base groove and the second base groove along a first direction. A second shaft core is located in the first base groove and interferes with the first base groove. A fourth shaft core is located in the second base groove and interferes with the second base groove.

[0074] In one implementation, the first base groove and the second base groove extend along a first direction, allowing the third and fourth shaft cores to slide relative to the base along the first direction. In this implementation, the ability of the third and fourth shaft cores to slide relative to the base along the first direction effectively utilizes the length dimension of the rotating shaft device, thus reducing its volume.

[0075] In one implementation, the first base groove and the second base groove extend along a fourth direction, which has a component along the first direction. The fourth direction forms an angle with the first direction and is parallel to the first support plate. In this implementation, the third and fourth shaft cores can slide relative to the base along the first direction, effectively utilizing the length dimension of the rotating shaft device and reducing its volume.

[0076] In one implementation, the first base groove and the second base groove extend along an arcuate direction, the arcuate direction having a component along a first direction. In this implementation, the third and fourth shaft cores can slide relative to the base along the first direction, effectively utilizing the length dimension of the rotating shaft device and helping to reduce the volume of the rotating shaft device.

[0077] Secondly, embodiments of this application provide a rotating shaft device having an open state and a closed state. The rotating shaft device includes a base, a support frame, a first shaft core, a second shaft core, and a first bushing assembly. The support frame is rotatably connected to the base so that the support frame can open or close relative to the base. The first shaft core is fixed to the support frame. The second shaft core is slidably connected to the base. A first end of the first bushing assembly is sleeved on the first shaft core and can rotate relative to the first shaft core, and a second end of the first bushing assembly is sleeved on the second shaft core and can rotate relative to the second shaft core. At least one interference fit exists between the first end of the first bushing assembly and the first shaft core, between the second shaft core and the base, or between the support frame and the base, such that during the switching between the open state and the closed state, the location of the interference fit provides torque to the rotating shaft device.

[0078] In this implementation, the overall torque of the pivot device can be increased, enabling the pivot device to support larger electronic devices or to support electronic devices at large angles. Alternatively, when the supported electronic devices are fixed, the volume of the pivot device can be reduced, which is beneficial for achieving a lightweight and thin design of the electronic devices as a whole.

[0079] It should be noted that any implementation of the rotating shaft device provided in the first aspect is applicable to the rotating shaft device provided in the second aspect.

[0080] Thirdly, embodiments of this application provide an electronic device, which includes a device body, a support member, and a rotating shaft device as described in any implementation of the first aspect. The rotating shaft device is located between the device body and the support member. The bracket in the rotating shaft device is fixedly connected to the support member, and the base in the rotating shaft device is fixedly connected to the device body. When the rotating shaft device is in the open state, the support member is opened relative to the device body via the rotating shaft device, and the support member is used to support the device body. When the rotating shaft device described in any implementation of the first aspect is applied to the electronic device, the electronic device can be stably supported due to the large torque provided by the rotating shaft device, thus meeting the requirement for large-angle support of the electronic device.

[0081] Fourthly, embodiments of this application provide a housing, the housing including a housing body, a support member, and a pivot device as described in any implementation of the first aspect. The pivot device is located between the housing body and the support member, the bracket in the pivot device is fixedly connected to the support member, and the base in the pivot device is fixedly connected to the housing body. When the pivot device is in the open state, the support member is opened relative to the housing body via the pivot device. When the pivot device as described in any implementation of the first aspect is applied to the housing, the housing can be stably supported because the pivot device provides a large torque. When the housing is used to accommodate functional components, it can meet the requirement of large-angle support of the housing, or when the functional components accommodated by the housing are heavy, it can provide sufficient torque to support the functional components inside the housing. Attached Figure Description

[0082] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the embodiments of this application will be described below.

[0083] Figure 1 This is a schematic diagram of the structure of an electronic device in a closed state according to an embodiment of this application;

[0084] Figure 2a This is a schematic diagram of the structure of an electronic device in an open state at a certain angle according to an embodiment of this application;

[0085] Figure 2b This is a schematic diagram of the structure of an electronic device in an open state at another angle, according to an embodiment of this application.

[0086] Figure 3 This is an exploded view of an electronic device provided in an embodiment of this application;

[0087] Figure 4a This is a schematic diagram of the structure of the shell in the closed state according to an embodiment of this application;

[0088] Figure 4b This is a schematic diagram of the structure of the housing in the open state according to an embodiment of this application;

[0089] Figure 5 This is a schematic diagram of the rotating shaft device provided in the first embodiment of this application in the open state;

[0090] Figure 6 yes Figure 5 The diagram shows the rotating shaft device in a closed state.

[0091] Figure 7 yes Figure 5 Exploded view of the rotating shaft device shown;

[0092] Figure 8 This is a schematic diagram of the force analysis of the rotating shaft device and support provided in the first embodiment of this application;

[0093] Figure 9 This is a schematic diagram of the force analysis of the first shaft core, the second shaft core, the virtual central shaft, and the support member provided in an embodiment of this application;

[0094] Figure 10 This is a schematic diagram of the force analysis of the first shaft core, the second shaft core, the virtual central shaft, and the support member provided in an embodiment of this application;

[0095] Figure 11 This is a schematic diagram of the force analysis of the first shaft core, the second shaft core, the virtual central shaft, and the support member provided in an embodiment of this application;

[0096] Figure 12 This is a schematic diagram of the force analysis of the first shaft core, the second shaft core, the virtual central shaft, and the support member provided in an embodiment of this application;

[0097] Figure 13 This is a schematic diagram of the force analysis of the first shaft core, the second shaft core, the virtual central shaft, and the support member provided in an embodiment of this application;

[0098] Figure 14 yes Figure 5 A cross-sectional view of the rotating shaft device of the first embodiment shown;

[0099] Figure 15 yes Figure 5 A partial structural schematic diagram of the rotating shaft device of the first embodiment is shown;

[0100] Figure 16 yes Figure 5 A partial structural schematic diagram of the rotating shaft device of the first embodiment is shown;

[0101] Figure 17 yes Figure 5 A partial structural schematic diagram of the rotating shaft device of the first embodiment is shown;

[0102] Figure 18 This is a schematic diagram of the structure of the first bushing and the second bushing in the rotating shaft device of the first embodiment of this application;

[0103] Figure 19 This is a schematic diagram of the structure of the first bushing and the first shaft core in the rotating shaft device of the first embodiment of this application;

[0104] Figure 20 This is a partial structural schematic diagram of the rotating shaft device according to the first embodiment of this application;

[0105] Figure 21This is a schematic diagram of the structure of the first bushing and the first shaft core in the rotating shaft device of the first embodiment of this application;

[0106] Figure 22 This is a schematic diagram of the structure of the second bushing in the rotating shaft device of the first embodiment of this application;

[0107] Figure 23 This is a schematic diagram of the structure of a rotating shaft device provided in an embodiment of this application;

[0108] Figure 24 This is a schematic diagram of the rotating shaft device provided in the second embodiment of this application in the open state;

[0109] Figure 25 yes Figure 24 The diagram shown is a structural schematic of the rotating shaft device in the closed state according to the second embodiment.

[0110] Figure 26 yes Figure 24 An exploded view of the rotating shaft device of the second embodiment shown;

[0111] Figure 27 yes Figure 24 A partial structural schematic diagram of the rotating shaft device of the second embodiment is shown;

[0112] Figure 28 yes Figure 24 A partial structural schematic diagram of the rotating shaft device of the second embodiment is shown;

[0113] Figure 29 yes Figure 24 A partial structural schematic diagram of the rotating shaft device of the second embodiment is shown;

[0114] Figure 30 This is a schematic diagram of the rotating shaft device provided in the third embodiment of this application in the open state;

[0115] Figure 31 yes Figure 30 The diagram shown is a structural schematic of the rotating shaft device in the closed state according to the third embodiment.

[0116] Figure 32 yes Figure 30 An exploded view of the rotating shaft device of the third embodiment shown;

[0117] Figure 33 This is a schematic diagram of the rotating shaft device provided in the fourth embodiment of this application in a closed state;

[0118] Figure 34 yes Figure 33 An exploded view of the rotating shaft device of the fourth embodiment shown;

[0119] Figure 35 yes Figure 33 A partial structural schematic diagram of the rotating shaft device in the fourth embodiment is shown;

[0120] Figure 36 This is a schematic diagram of the rotating shaft device provided in the fifth embodiment of this application in the open state;

[0121] Figure 37 yes Figure 36 The diagram shown is a structural schematic of the rotating shaft device in the closed state according to the fifth embodiment.

[0122] Figure 38 yes Figure 36 An exploded view of the rotating shaft device of the fifth embodiment shown. Detailed Implementation

[0123] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0124] In this document, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "multiple" means two or more.

[0125] Furthermore, in this article, directional terms such as "upper" and "lower" are defined relative to the orientation of the structure as shown in the attached drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the orientation of the structure.

[0126] For ease of understanding, the English abbreviations and related technical terms used in the embodiments of this application will be explained and described below.

[0127] Rotary connection: A rotatable connection between component A and component B means that component A and component B are connected and can rotate relative to each other.

[0128] Sliding connection: When component A and component B are connected in a sliding connection, it means that component A and component B are connected to each other and can slide relative to each other after the connection.

[0129] Perpendicularity: The perpendicularity defined in this application is not limited to an absolute perpendicular intersection (with an included angle of 90 degrees). It is permissible for non-absolute perpendicular intersections caused by factors such as assembly tolerances, design tolerances, and structural flatness. It is permissible for errors within a small angular range, such as an assembly error range of 80 to 100 degrees, which can all be understood as a perpendicular relationship.

[0130] Parallelism: The parallelism defined in this application is not limited to absolute parallelism. This definition of parallelism can be understood as basic parallelism, allowing for situations where the parallelism is not absolute due to factors such as assembly tolerances, design tolerances, and structural flatness.

[0131] MIM: Metal Injection Molding.

[0132] Interference fit: An interference fit between component A and component B means that the outer diameter of component A is larger than the inner diameter of the through hole of component B. Component A is inserted into the through hole of component B, so that the interference fit between component A and component B generates torque.

[0133] This application provides a rotating shaft device with an open state and a closed state. The rotating shaft device includes a base, a support frame, a first shaft core, a second shaft core, and a first bushing assembly. The support frame is rotatably connected to the base so that the support frame can open or close relative to the base. The first shaft core is fixed to the support frame. The second shaft core is slidably connected to the base. The first end of the first bushing assembly is sleeved on the first shaft core and can rotate relative to the first shaft core, and the second end of the first bushing assembly is sleeved on the second shaft core and can rotate relative to the second shaft core. The two ends of the first bushing assembly respectively interfere with the first shaft core and the second shaft core, so that during the switching between the open and closed states of the rotating shaft device, the first bushing assembly, the first shaft core, and the second shaft core provide torque to the rotating shaft device. The rotating shaft device provided in this application provides torque through the interference cooperation between the first bushing assembly and the first and second shaft cores, which can stably support electronic devices at user-set angles and meet the requirements for large-angle support.

[0134] The rotating shaft device provided in this application embodiment can be applied to electronic devices.

[0135] Please see Figures 1 to 3 , Figure 1 This is a schematic diagram of the structure of an electronic device 1 in a closed state according to an embodiment of this application. Figure 2a This is a schematic diagram of the structure of an electronic device 1 in an open state at a certain angle, according to an embodiment of this application. Figure 2b This is a schematic diagram of the electronic device 1 provided in one embodiment of the present application, showing it in an open state at another angle. Figure 3 An exploded view of an electronic device 1 provided in an embodiment of this application.

[0136] In one embodiment, the electronic device 1 includes a device body 20, a support member 30, and a rotating shaft device 10 (e.g., ...). Figure 3 As shown), the rotating shaft device 10 is located between the equipment body 20 and the support member 30, and the support frame of the rotating shaft device 10 is fixedly connected to the support member 30 (as shown). Figure 2a and Figure 2bAs shown), the base of the rotating shaft device 10 is fixedly connected to the equipment body 20 (e.g. Figure 2a and Figure 2b As shown), where in Figure 2a and Figure 2b The base and support of the rotating shaft device 10 are not shown. When the rotating shaft device 10 is in the open state, the support member 30 is opened relative to the equipment body 20 through the rotating shaft device 10, and the support member 30 is used to support the equipment body 20.

[0137] In this embodiment, the support member 30 is used for the user to apply force and to support the device body 20. The rotating shaft device 10 is used to realize the rotation of the support member 30 and to provide torque to keep the support member 30 at a certain opening and closing angle. The bracket of the rotating shaft device 10 is fixedly connected to the support member 30, and the base of the rotating shaft device 10 is fixedly connected to the device body 20. During the opening and closing of the electronic device 1, the included angle between the bracket of the rotating shaft device 10 and the support member 30 remains unchanged, and the included angle between the base of the rotating shaft device 10 and the device body 20 remains unchanged.

[0138] In one embodiment, the electronic device includes, but is not limited to, 2-in-1 products, all-in-one computers, and mobile phones. The 2-in-1 product typically includes a main unit and a keyboard assembly, which are detachably connected. Even after being separated from the keyboard assembly, the main unit can still be used as an independent electronic device; for example, the main unit could be a tablet computer. The main unit is the device body 20 in electronic device 1, a support member 30 is located on the back of the main unit for supporting it, and a hinge device 10 is located between the main unit and the support member.

[0139] In actual use, such as Figure 1 As shown, when the electronic device 1 is in the closed state, the support member 30 is closed with the device body 20. The rotating shaft device 10 is located between the support member 30 and the device body 20, applying a force to the support member 30. Since the support member 30 is fixedly connected to the support frame of the rotating shaft device 10, the support frame of the rotating shaft device 10 is also subjected to the same force and presents a corresponding opening and closing angle relative to the base. At this time, if the torque provided by the rotating shaft device 10 is small, although the user can easily open and close the rotating shaft device 10, the rotating shaft device 10 cannot stably maintain a specific opening and closing angle. Especially when the opening angle is large, the rotating shaft device 10 is prone to tipping over, which may damage the device body 20. Figure 2a and Figure 2b This is a schematic diagram showing the electronic device 1 unfolded at different angles. Figure 2b The unfolding angle in Figure 2a The unfolding angle is large. Figure 2b The rotating shaft device 10 shown needs to provide greater torque to support the electronic device 1.

[0140] The present application embodiment improves the rotating shaft device 10, which can increase the torque provided by the rotating shaft device 10, so that the rotating shaft device 10 can support the electronic device 1 more stably.

[0141] In one embodiment, the pivot device 10 of this application can also be applied to a protective case. For example, the protective case is used to mount an electronic device externally, supporting the electronic device by opening the protective case. For example, the protective case can be a leather protective case.

[0142] In one embodiment, the rotating shaft device 10 of this application can also be applied to other structural components or products that require support, in order to provide a larger torque and achieve more stable support for the structural components or products.

[0143] Please see Figure 4a and Figure 4b , Figure 4a This is a schematic diagram of the structure of the shell 21 in the closed state according to an embodiment of this application. Figure 4b This is a schematic diagram of the housing 21 in its open state according to an embodiment of this application. In this embodiment, the housing 21 includes a housing body 22, a support member 30, and a rotating shaft device 10. The rotating shaft device 10 is located between the housing body 22 and the support member 30. The bracket in the rotating shaft device 10 is fixedly connected to the support member 30, and the base in the rotating shaft device 10 is fixedly connected to the housing body 22. When the rotating shaft device 10 is in the open state, the support member 30 is opened relative to the housing body 22 via the rotating shaft device 10.

[0144] The housing body 22 is used to house functional components. For example... Figure 4b As shown, the dashed box inside the housing body 22 represents the receiving cavity 23 inside the housing body 22, which is used to receive functional components.

[0145] In some embodiments, the electronic device 1 includes multiple functional components (not shown in the figures), which can be installed inside the housing body 22. These functional components may include, for example, a display screen, a mid-frame, a camera module, a processor, internal memory, an external memory interface, a universal serial bus (USB) interface, a charging management module, a power management module, a battery, an antenna, a communication module, a camera, an audio module, a speaker, a receiver, a microphone, a headphone jack, a sensor module, buttons, a motor, an indicator, and a subscriber identification module (SIM) card interface, etc. The electronic device 1 may have more or fewer components than described above, may combine two or more components, or may have different component configurations. The various components can be implemented in hardware, software, or a combination of hardware and software, including one or more signal processing and / or application-specific integrated circuits (ASICs).

[0146] For example, electronic device 1 is a tablet computer, and housing 21 is the housing of the tablet computer. For example, electronic device 1 is a mobile phone, and housing 21 is the mobile phone housing.

[0147] In one embodiment, the support member 30 is located on the back side of the housing body 22. The front side of the housing body 22 is used to accommodate functional components; for example, when the housing 21 is a tablet computer housing, the front side of the housing body 22 is the display side of the tablet computer. The back side and display side of the housing body 22 are arranged opposite to each other.

[0148] In one embodiment, a receiving groove 24 (e.g., on the surface of the housing body 22 facing the support member 30) is provided. Figure 4b The receiving groove 24 is used to accommodate the support member 30, so that the back of the housing 21 remains flat when the housing 21 is in the closed state. For example, the receiving groove 24 may include groove walls, and the support member 30 is located within the area enclosed by the groove walls. For example, the receiving groove 24 is a recessed groove on the back surface of the housing body 22, without groove walls.

[0149] The following describes how the rotating shaft device 10 provided in the first embodiment of this application can be implemented.

[0150] Please see Figures 5 to 7 , Figure 5 This is a schematic diagram of the rotating shaft device 10 provided in the first embodiment of this application in the open state. Figure 6 for Figure 5 The diagram shown is a structural schematic of the rotating shaft device 10 in a closed state. Figure 7 for Figure 5 The exploded view of the rotating shaft device 10 shown.

[0151] In one embodiment, the rotating shaft device 10 has an open state and a closed state, and the rotating shaft device 10 includes a base 500, a support frame 400, a first shaft core 200, a second shaft core 300, and a first bushing assembly 100 (e.g., Figure 5 and Figure 7 (As shown). The support frame 400 is rotatably connected to the base 500 so that the support frame 400 can be opened or closed relative to the base 500 (in combination). Figure 5 and Figure 6 As shown). The first shaft core 200 is fixed to the support frame 400 (as shown). Figure 5 As shown). The second shaft core 300 is slidably connected to the base 500 (in combination). Figures 5 to 7 As shown). The first end 110 of the first bushing assembly 100 is sleeved on the first shaft core 200 and can rotate relative to the first shaft core 200 (in conjunction with). Figures 5 to 7 As shown), the second end 120 of the first bushing assembly 100 is sleeved on the second shaft core 300 and can rotate relative to the second shaft core 300 (in conjunction with...). Figures 5 to 7 As shown), the two ends of the first bushing assembly 100 are respectively interfered with the first shaft core 200 and the second shaft core 300, so that during the switching between the open and closed states of the rotating shaft device 10, the first bushing assembly 100, the first shaft core 200 and the second shaft core 300 are used to provide torque to the rotating shaft device 10.

[0152] In this embodiment, the support frame 400 opens and closes relative to the base 500, corresponding to the open and closed states of the rotating shaft device 10. The rotating shaft device 10 is fixedly connected to the support member 30 via the support frame 400. When the user applies a force to the support member 30, the support frame 400 rotates relative to the base 500, thereby switching the rotating shaft device 10 between the open and closed states.

[0153] In this embodiment, the first bushing assembly 100 is rotatable relative to the support frame 400 and the base 500. Both ends of the first bushing assembly 100 are hollow. The first shaft core 200 and the second shaft core 300 respectively support the two ends of the first bushing assembly 100. The inner walls of both ends of the first bushing assembly 100 are respectively in interference fit with the outer walls of the first shaft core 200 and the second shaft core 300. Interference fit refers to an interference fit or a fit that generates torque or friction. When the first end 110 of the first bushing assembly 100 is in interference fit with the first shaft core 200, the first end 110 of the first bushing assembly 100 and the first shaft core 200 can still rotate relative to each other. However, when the first end 110 of the first bushing assembly 100 rotates relative to the first shaft core 200, a force needs to be applied to the support frame 400. The interference fit between the first end 110 of the first bushing assembly 100 and the first shaft core 200 provides torque so that when they rotate relative to each other, they can maintain the required opening and closing angle. The second end 120 of the first bushing assembly 100 is similar to the second shaft core 300.

[0154] In the rotating shaft device 10, compared to providing torque only at the first shaft core 200, the rotating shaft device 10 in this embodiment provides torque at two locations. The torque is provided by interference cooperation at the two ends of the first bushing assembly 100 where it connects to the first shaft core 200 and the second shaft core 300, thus increasing the overall torque. On the one hand, the increased overall torque increases the resistance experienced by the user when pushing the support member 30, thereby enabling the user to more accurately control the opening and closing angle and meet the user's usage needs in different scenarios. On the other hand, after the user determines the opening and closing angle of the electronic device 1, the large torque of the rotating shaft device 10 makes it difficult for the opening and closing angle of the electronic device 1 to change. That is, the rotating shaft device 10 can stably support the electronic device 1, and it is not easy to tip over even at a large opening and closing angle, which helps to prevent damage to the electronic device 1.

[0155] The following section describes the positional relationship and force analysis between the first core 200, the second core 300, and the virtual central axis.

[0156] Please see Figure 8 , Figure 8 This is a schematic diagram of the force analysis of the rotating shaft device 10 and the support member 30 provided in the first embodiment of this application. In one embodiment, the rotation center of the support frame 400 around the base 500 is denoted as the virtual central axis V, and the first shaft core 200 and the second shaft core 300 are parallel to the virtual central axis V. In the open state, the virtual central axis V, the first shaft core 200, and the second shaft core 300 are arranged at intervals along the first direction A. In this embodiment, in the open state, along the first direction A, the virtual central axis V and the second shaft core 300 are located on both sides of the first shaft core 200. For example, as shown... Figure 8 As shown, the virtual central axis V is located to the left of the first axis core 200, and the second axis core 300 is located to the right of the first axis core 200.

[0157] In this embodiment, Figure 8 for Figure 6 The force analysis diagram of the rotating shaft device 10 shown is as follows. Figure 8 The above figure is a schematic diagram of the rotating shaft device 10 in the open state. Figure 8 The following diagram shows the rotating shaft device 10 in the closed state. When the user applies a force F1 to the support member 30 to close the rotating shaft device 10, the support member 30 rotates clockwise, and the first end 110 of the first bushing assembly 100 rotates counterclockwise relative to the support frame 400. A clockwise torque M1 exists between the first end 110 of the first bushing assembly 100 and the first shaft core 200. Simultaneously, the support frame 400 applies a force F2 (not shown in the diagram) to the first end 110 of the first bushing assembly 100, where F2 has a rightward component along the first direction A. Aand the component force F2 downward along the third direction C C The second end 120 of the first bushing assembly 100 rotates counterclockwise relative to the base 500, and there is a clockwise torque M2 between the second end 120 of the first bushing assembly 100 and the second shaft core 300. At the same time, the base 500 applies a resistance force F3 (not shown in the figure) to the second end 120 of the first bushing assembly 100, wherein F3 has a leftward component force F3 along the first direction A. A and the component force F3 along the third direction C upward. C .

[0158] In this embodiment, the first direction A is perpendicular to the first shaft core 200 and parallel to the surface of the base 500 facing the device body. In one embodiment, the first direction A is the length direction of the rotating shaft device 10.

[0159] The following is based on Figure 8 Taking the first shaft core 200 and the second shaft core 300 as examples, it is explained that setting two torque points in the rotating shaft device 10 can increase the overall torque value of the rotating shaft device 10. Please continue reading. Figure 8 In the figure below, in one embodiment, the line segment between the rotatable connection between the support 400 and the base 500 and the first shaft core 200 is designated as the first line segment L1. In the closed state, the first line segment L1 forms a first angle α1 with the first direction A. The line segment between the first shaft core 200 and the second shaft core 300 is designated as the second line segment L2. In the closed state, the second line segment L2 forms a second angle α2 with the first direction A. The total torque of the rotating shaft device 10 satisfies the relationship M = aM1 + bM2.

[0160] Where M represents the total torque of the rotating shaft device 10, M1 represents the torque provided by the first end 110 of the first bushing assembly 100 to the first shaft core 200, and M2 represents the torque provided by the second end 120 of the first bushing assembly 100 to the second shaft core 300. a and b are coefficients related to the dimensions of the first line segment L1, the second line segment L2, the first included angle α1, and the second included angle α2. The value of M1 is related to the degree of interference fit between the first end 110 of the first bushing assembly 100 and the first shaft core 200. For example, when the outer diameter of the first shaft core 200 is larger than the inner diameter of the through hole at the first end 110 of the first bushing assembly 100, and the difference between the outer diameter of the first shaft core 200 and the inner diameter of the through hole at the first end 110 of the first bushing assembly 100 is large, the value of M1 is larger. The value of M2 is related to the degree of interference fit between the second end 120 of the first bushing assembly 100 and the second shaft core 300. In some embodiments, the value of M1 is also related to the roughness of the contact surface between the first end 110 of the first bushing assembly 100 and the first shaft core 200, and the value of M2 is also related to the roughness of the contact surface between the second end 120 of the first bushing assembly 100 and the second shaft core 300. In summary, the values ​​of M1 and M2 are determined after the rotating shaft device 10 is manufactured, and the values ​​of M1 and M2 will not change during the switching between the open and closed states of the rotating shaft device 10.

[0161] During the transition of the rotating shaft device 10 from a closed state to an open state, the dimensions of the first line segment L1 and the second line segment L2 remain unchanged, while the values ​​of the first included angle α1 and the second included angle α2 continuously change. In designing the rotating shaft device 10, by setting the values ​​of L1 and L2, as well as the initial values ​​of α1 and α2 in the closed state, the value of M increases continuously as the values ​​of the first included angle α1 and the second included angle α2 change during the opening process. If only one torque is set in the rotating shaft device 10, then M equals M1 during the opening process. Although the first included angle α1 also changes, the value of M1 is independent of α1, ensuring that M remains constant during the opening process.

[0162] In this embodiment, when the rotating shaft device 10 is in the closed state, the force (i.e., gravity) exerted by the electronic device on the rotating shaft device 10 is borne by the rotating shaft device 10 as a whole. During the process of the rotating shaft device 10 switching from the closed state to the open state, when the opening angle increases, a larger torque is required to support the electronic device. As can be seen from the above relationship M=aM1+bM2, during the process of the rotating shaft device 10 switching from the closed state to the open state, as the values ​​of the first included angle α1 and the second included angle α2 continuously change, M continuously increases. Therefore, the rotating shaft device 10 provided in this application embodiment can adapt to the torque requirements of large-angle support and ensure the stability of the rotating shaft device 10.

[0163] under Figures 9 to 13 Other possible implementations of the relative positions of the first core 200, the second core 300, and the virtual central axis V provided in the embodiments of this application.

[0164] Example 1, please refer to Figure 9 , Figure 9 This is a schematic diagram of the force analysis of the first shaft core 200, the second shaft core 300, the virtual central axis V, and the support member 30 provided in one embodiment of this application. In one implementation, in the closed state, along the first direction A, the first shaft core 200 is located between the second shaft core 300 and the virtual central axis V. The first direction A is perpendicular to the virtual central axis V and parallel to the surface of the base 500 facing the support frame 400. For example, as shown... Figure 9 As shown, the second axis core 300 and the virtual center axis V are located on the left and right sides of the first axis core 200 along the first direction A, respectively. The first axis core 200 and the second axis core 300 are both located on the left side of the virtual center axis V along the first direction A.

[0165] In this embodiment, the first direction A is the length direction of the rotating shaft device 10. Wherein, Figure 9 The upper figure shows a schematic diagram of the rotating shaft device 10 in the closed state. Figure 9 The following diagram shows the rotating shaft device 10 in the open state. During the process of the user applying force F1 to the support member 30 to open the rotating shaft device 10, the support member 30 rotates counterclockwise, and the first end 110 of the first bushing assembly 100 rotates clockwise relative to the support frame 400. There is a counterclockwise torque M1 between the first end 110 of the first bushing assembly 100 and the first shaft core 200. Simultaneously, the support frame 400 applies a force F2 to the first end 110 of the first bushing assembly 100, F2 having a rightward component F2 along the first direction A. A and the component of the third force F2 upward towards C C The second end 120 of the first bushing assembly 100 rotates counterclockwise relative to the base 500, and there is a clockwise torque M2 between the second end 120 of the first bushing assembly 100 and the second shaft core 300. At the same time, the base 500 applies a force F3 to the second end 120 of the first bushing assembly 100, wherein F3 has a leftward component F3 along the first direction A. A and the downward component of the third force F3 towards C C The third direction C is perpendicular to the first direction A and perpendicular to the surface of the base 500 facing the support 400, or the third direction C is perpendicular to the surface of the base 500 facing the equipment body.

[0166] Example 2, please refer to Figure 10 , Figure 10This is a schematic diagram illustrating the force analysis of a first shaft core 200, a second shaft core 300, a virtual central axis V, and a support member 30 according to an embodiment of this application. In one embodiment, in the closed state, along the first direction A, the first shaft core 200 is located between the virtual central axis V and the second shaft core 300. For example, as shown... Figure 10 As shown, the virtual central axis V and the second axis core 300 are located on the left and right sides of the first axis core 200 along the first direction A, respectively. The first axis core 200 and the second axis core 300 are both located on the right side of the virtual central axis V along the first direction A.

[0167] In this embodiment, Figure 10 The upper figure shows a schematic diagram of the rotating shaft device 10 in the closed state. Figure 10 The following diagram shows the rotating shaft device 10 in the open state. During the process of the user applying force F1 to the support member 30 to open the rotating shaft device 10, the support member 30 rotates counterclockwise, and the first end 110 of the first bushing assembly 100 rotates clockwise relative to the support frame 400. There is a counterclockwise torque M1 between the first end 110 of the first bushing assembly 100 and the first shaft core 200. Simultaneously, the support frame 400 applies a force F2 to the first end 110 of the first bushing assembly 100, where F2 has a leftward component F2 along the first direction A. A and the component of the third force F2 upward towards C C The second end 120 of the first bushing assembly 100 rotates clockwise relative to the base 500, and a counterclockwise torque M2 exists between the second end 120 of the first bushing assembly 100 and the second shaft core 300. Simultaneously, the base 500 applies a resistance force F3 to the second end 120 of the first bushing assembly 100, wherein F3 has a rightward component force F3 along the first direction A. A and the downward component of the third force F3 towards C C .

[0168] Example 3, please refer to Figure 11 , Figure 11 This is a schematic diagram illustrating the force analysis of a first shaft core 200, a second shaft core 300, a virtual central axis V, and a support member 30 according to an embodiment of this application. In one embodiment, in the closed state, along the first direction A, the virtual central axis V is located between the first shaft core 200 and the second shaft core 300. In this embodiment, the first shaft core 200 is located on one side of the virtual central axis V along the first direction A, and the second shaft core 300 is located on the other side of the virtual central axis V along the first direction A. For example, as... Figure 11 As shown, the first axis core 200 is located to the left of the virtual center axis V along the first direction A, and the second axis core 300 is located to the right of the virtual center axis V along the first direction A.

[0169] In this embodiment, Figure 11The upper figure shows a schematic diagram of the rotating shaft device 10 in the closed state. Figure 11 The following diagram shows the rotating shaft device 10 in the open state. During the process of the user applying force F1 to the support member 30 to open the rotating shaft device 10, the support member 30 rotates counterclockwise, and the first end 110 of the first bushing assembly 100 rotates clockwise relative to the support frame 400. There is a counterclockwise torque M1 between the first end 110 of the first bushing assembly 100 and the first shaft core 200. Simultaneously, the support frame 400 applies a force F2 to the first end 110 of the first bushing assembly 100, where F2 has a leftward component F2 along the first direction A. A and the component of the third force F2 upward towards C C The second end 120 of the first bushing assembly 100 rotates counterclockwise relative to the base 500, and there is a clockwise torque M2 between the second end 120 of the first bushing assembly 100 and the second shaft core 300. At the same time, the base 500 applies a resistance force F3 to the second end 120 of the first bushing assembly 100, wherein F3 has a rightward component force F3 along the first direction A. A and the downward component of the third force F3 towards C C .

[0170] Example 4, please refer to Figure 12 , Figure 12 This is a schematic diagram illustrating the force analysis of a first shaft core 200, a second shaft core 300, a virtual central axis V, and a support member 30 according to an embodiment of this application. In one embodiment, in the closed state, the first shaft core 200 coincides with the virtual central axis V in the first direction A, and the second shaft core 300 is spaced apart from the virtual central axis V along the first direction A. In this embodiment, the second shaft core 300 is located on one side of the virtual central axis V along the first direction A. For example, as shown... Figure 12 As shown, the second axis core 300 is located to the right of the virtual center axis V along the first direction A.

[0171] In this embodiment, Figure 12 The upper figure shows a schematic diagram of the rotating shaft device 10 in the closed state. Figure 12 The following diagram shows the rotating shaft device 10 in the open state. During the process of the user applying force F1 to the support member 30 to open the rotating shaft device 10, the support member 30 rotates counterclockwise, and the first end 110 of the first bushing assembly 100 rotates clockwise relative to the support frame 400. There is a counterclockwise torque M1 between the first end 110 of the first bushing assembly 100 and the first shaft core 200. Simultaneously, the support frame 400 applies a force F2 to the first end 110 of the first bushing assembly 100, where F2 has a leftward component F2 along the first direction A. A and the component of the third force F2 upward towards C CThe second end 120 of the first bushing assembly 100 rotates clockwise relative to the base 500, and a counterclockwise torque M2 exists between the second end 120 of the first bushing assembly 100 and the second shaft core 300. Simultaneously, the base 500 applies a resistance force F3 to the second end 120 of the first bushing assembly 100, wherein F3 has a rightward component force F3 along the first direction A. A and the downward component of the third force F3 towards C C .

[0172] Example 5, please refer to Figure 13 , Figure 13 This is a schematic diagram of the force analysis of a first shaft core 200, a second shaft core 300, a virtual central axis V, and a support member 30 according to an embodiment of this application. In one embodiment, in the closed state, the first shaft core 200 coincides with the virtual central axis V in the first direction A, and the second shaft core 300 is spaced apart from the virtual central axis V along the first direction A. In this embodiment, the second shaft core 300 is located to the left of the virtual central axis V along the first direction A. For example, as shown... Figure 13 As shown, the second axis core 300 is located to the left of the virtual center axis V along the first direction A.

[0173] In this embodiment, Figure 13 The upper figure shows a schematic diagram of the rotating shaft device 10 in the closed state. Figure 13 The following diagram shows the rotating shaft device 10 in the open state. During the process of the user applying force F1 to the support member 30 to open the rotating shaft device 10, the support member 30 rotates counterclockwise, and the first end 110 of the first bushing assembly 100 rotates clockwise relative to the support frame 400. There is a counterclockwise torque M1 between the first end 110 of the first bushing assembly 100 and the first shaft core 200. Simultaneously, the support frame 400 applies a force F2 to the first end 110 of the first bushing assembly 100, where F2 has a rightward component along the first direction A. A and the component of the third force F2 upward towards C C The second end 120 of the first bushing assembly 100 rotates counterclockwise relative to the base 500, and there is a clockwise torque M2 between the second end 120 of the first bushing assembly 100 and the second shaft core 300. At the same time, the base 500 applies a resistance force F3 to the second end 120 of the first bushing assembly 100, wherein F3 has a leftward component force F3 along the first direction A. A and the downward component of the third force F3 towards C C .

[0174] exist Figures 8 to 13 In the embodiment shown, the first shaft core 200 and the second shaft core 300 are arranged on the same side or opposite side of the virtual central axis V along the first direction A, so that the rotating shaft device 10 can be applied to different application scenarios, which is beneficial to improving the practicality of the rotating shaft device 10.

[0175] It should be noted that, Figures 8 to 13 The force analysis of the rotating shaft device 10 and the support member 30 is only schematic and does not represent the specific structure, size, and connection relationship of the rotating shaft device 10 and the support member 30. Furthermore, it is understood that the upward, downward, leftward, rightward, clockwise, and counterclockwise directions in the embodiments of this application are only relative concepts. Under different viewing angles or installation methods, the first shaft core 200, the second shaft core 300, and the virtual central axis V will exhibit different positional relationships, and the various components of the rotating shaft device 10 will exhibit different directions of rotation during movement. Those skilled in the art can make judgments based on the actual situation, and this application does not impose absolute limitations in this regard.

[0176] Please return to the first embodiment of this application. The following describes one possible implementation of the first bushing assembly 100 in the first embodiment of this application. Please refer to... Figures 14 to 16 , Figure 14 for Figure 5 The cross-sectional view of the rotating shaft device 10 of the first embodiment shown is shown. Figure 15 for Figure 5 A partial structural schematic diagram of the rotating shaft device 10 of the first embodiment is shown. Figure 16 for Figure 5 The diagram shows a partial structural schematic of the rotating shaft device 10 of the first embodiment. In one embodiment, the first bushing assembly 100 includes a first bushing 130 and a second bushing 140 fixed to each other (e.g., ...). Figure 14 As shown, the first bushing 130 is sleeved on the first shaft core 200 and can rotate relative to the first shaft core 200 and interfere with the first shaft core 200; the second bushing 140 is sleeved on the second shaft core 300 and can rotate relative to the second shaft core 300 and interfere with the second shaft core 300.

[0177] In this embodiment, the first bushing 130 and the second bushing 140 are fixedly connected. During the opening and closing of the rotating shaft device 10, the first bushing 130 and the second bushing 140 can maintain synchronous movement or remain stationary, which helps to ensure the smoothness of the movement of the first bushing assembly 100, thereby improving the stability of the rotating shaft device 10 when supporting the electronic device 1. The first bushing 130 and the first shaft core 200 interfere with each other, so that the first bushing 130 can generate torque during the rotation of the first bushing core 200, and the same applies to the second bushing 140 and the second shaft core 300. Both the first bushing 130 and the second bushing 140 can provide torque in the rotating shaft device 10, which helps to increase the total torque provided by the rotating shaft device 10 during the opening and closing process, so that the rotating shaft device 10 can stably support the electronic device 1 at the angle set by the user.

[0178] Please refer to the following: Figure 7 and Figure 14In one embodiment, the first bushing assembly 100 further includes a first connecting rod 150 (e.g., Figure 14 As shown, a first connecting rod 150 connects the first bushing 130 and the second bushing 140, with the extension direction of the first connecting rod 150 perpendicular to the axial direction of the first bushing 130. In this embodiment, the first bushing 130 is fixedly connected to the second bushing 140 via the first connecting rod 150. The first connecting rod 150 transmits power from the first bushing 130 to the second bushing 140, enabling the first bushing assembly 100 to rotate as a whole. In one embodiment, the first bushing 130, the first connecting rod 150, and the second bushing 140 are integrally formed. This embodiment helps to improve the overall structural stability of the first bushing assembly 100.

[0179] In one embodiment, the support 400 includes a clearance hole 410 (e.g., Figure 7 As shown, the clearance hole 410 penetrates the support frame 400, and part of the first bushing 130 is located in the clearance hole 410. This solution can reduce the volume of the rotating shaft device 10, which is conducive to achieving miniaturization design.

[0180] In one embodiment, the support 400 further includes a first shaft mounting hole 420 (e.g., Figure 7 As shown), the first shaft mounting holes 420 are located at both ends of the support 400 along the second direction B. The first shaft 200 includes a first end 210 and a second end 220 disposed opposite to each other (as shown). Figure 7 As shown in the diagram, the first end 210 and the second end 220 of the first shaft core 200 are both flatly engaged with the first shaft core mounting hole 420 and remain relatively fixed. In this embodiment, the second direction B is the width direction of the rotating shaft device 10. The portion between the first end 210 and the second end 220 of the first shaft core 200 interferes with the first bushing 130, and the first end 210 and the second end 220 of the first shaft core 200 are flatly engaged with the first shaft core mounting hole 420 and remain relatively fixed.

[0181] Taking the first end 210 of the first shaft core 200 as an example, the flat fit means that the outer wall of the first end 210 of the first shaft core 200 and the inner wall of the first shaft core mounting hole 420 are respectively provided with a flat fit, and the flat fit is in contact with each other, so that there is no relative movement between the first end 210 of the first shaft core 200 and the first shaft core mounting hole 420. Specifically, the first shaft core mounting hole 420 is racetrack-shaped and has two opposing planes on its inner surface. The outer peripheral surfaces of the first end 210 and the second end 220 of the first shaft core 200 also have two opposing planes. When the first end 210 and the second end 220 of the first shaft core 200 are located in the first shaft core mounting hole 420, the planes of the outer peripheral surfaces of the first end 210 and the second end 220 are in contact with each other, so that the first end 210 and the second end 220 of the first shaft core 200 are both in a flat fit with the first shaft core mounting hole 420.

[0182] In one embodiment, the way in which the first end 210 and the second end of the first shaft core 200 are fixedly connected to the first shaft core mounting hole 420 is not limited to a flat fit. For example, it can also be a concave-convex fit, that is, the first end 210 of the first shaft core 200 is provided with a protrusion, and the first axial mounting hole is provided with a concave part. The protrusion and the concave part cooperate to realize the fixed connection between the first end 210 of the first shaft core 200 and the first shaft core mounting hole 420.

[0183] The following describes other possible implementations of the first bushing 130 and the second bushing 140 in the first embodiment of this application.

[0184] Example 1, please refer to the following: Figure 7 and Figure 18 , Figure 18 This is a schematic diagram of the structure of the first bushing 130 and the second bushing 140 in the rotating shaft device 10 of the first embodiment of this application. In one embodiment, the first bushing 130 is provided with a first opening 131 penetrating the inner and outer surfaces of the first bushing 130 (e.g., ...). Figure 7 and Figure 18 As shown), the first opening 131 extends axially along the first bushing 130 (as shown). Figure 7 (As shown). In this embodiment, the first bushing 130 is not a closed cylinder. Due to the interference fit between the first bushing 130 and the first shaft core 200, the first bushing 130 will experience certain resistance when rotating relative to the first shaft core 200. This solution provides a first opening 131 in the first bushing 130, which helps to increase the rotation range of the first bushing 130 relative to the first shaft core 200. In addition, the first opening 131 can also increase the elasticity of the first bushing 130.

[0185] In one embodiment, the second bushing 140 is provided with a second opening 141 penetrating the inner and outer surfaces of the second bushing 140 (e.g., ...). Figure 7 and Figure 18As shown in the diagram, the second opening 141 extends axially along the second bushing 140. When the first bushing 130 has the first opening 131 and the second bushing 140 has the second opening 141, the first opening 131 and the second opening 141 can open in different directions. In this embodiment, the second bushing 140 is not a closed cylinder. Due to the interference fit between the second bushing 140 and the second shaft core 300, the second bushing 140 will experience certain resistance when rotating relative to the second shaft core 300. This solution provides a second opening 141 in the second bushing 140, which helps to increase the rotation range of the second bushing 140 relative to the second shaft core 300.

[0186] Example 2, please refer to Figure 19 and Figure 20 , Figure 19 This is a schematic diagram of the structure of the first bushing 130 and the first shaft core 200 in the rotating shaft device 10 of the first embodiment of this application. Figure 20 This is a partial structural diagram of the rotating shaft device 10 according to the first embodiment of this application. In one embodiment, the inner surface of the first bushing 130 has a first bushing planar portion 132 (e.g., Figure 19 As shown), the outer surface of the first shaft core 200 is provided with a first shaft core plane portion 230 parallel to the first shaft sleeve plane portion 132 (as shown). Figure 20 As shown), in the closed state, the first bushing planar portion 132 and the first shaft core planar portion 230 are arranged opposite to each other (as shown). Figure 20 (As shown).

[0187] In this embodiment, the first bushing plane portion 132 matches the first shaft core plane portion 230. In the closed state, both the first bushing plane portion 132 and the first shaft core plane portion 230 are parallel to the bottom of the base 500. When the rotating shaft device 10 is in the closed state, it is necessary to prevent relative rotation between the first bushing 130 and the first shaft core 200. Therefore, this solution provides the first bushing plane portion 132 and the first shaft core plane portion 230 to limit the first bushing 130 and the first shaft core 200 in the circumferential direction, thereby achieving locking of the rotating shaft device 10 in the closed state. It is understood that locking the rotating shaft device 10 is only a temporary state. When the rotating shaft device 10 needs to change from the closed state to the open state, simply apply force to the rotating shaft device 10 to separate the first bushing plane portion 132 and the first shaft core plane portion 230.

[0188] Please continue reading. Figure 20In one embodiment, the outer surface of the first shaft core 200 is further provided with an opening and locking plane portion 260. In the closed state, the opening and locking plane portion 260 is spaced apart from the first shaft core plane portion 230. During the process of the rotating shaft device 10 changing from the closed state to the open state, when the first bushing plane portion 132 rotates to be parallel to the opening and locking plane portion 260, the rotating shaft device 10 locks and remains at the opening angle, so that the rotating shaft device 10 can be stably maintained in the open state.

[0189] Example 3, please refer to Figure 21 , Figure 21 This is a partial structural diagram of the first bushing 130 and the first shaft core 200 in the rotating shaft device 10 of the first embodiment of this application. In one embodiment, in the closed state, there is an angle between the flat portion 132 of the first bushing and the flat portion 230 of the first shaft core. During the process of the rotating shaft device 10 changing from the closed state to the open state, when the flat portion 132 of the first bushing rotates to be parallel with the flat portion 230 of the first shaft core, the rotating shaft device 10 is locked and maintained at this opening angle, so that the rotating shaft device 10 can be stably maintained in the open state. This solution can lock the rotating shaft device 10 at a specific angle during the opening process, so that the rotating shaft device 10 can meet the usage requirements of different scenarios.

[0190] Please refer to the following: Figures 20 to 22 , Figure 22 This is a schematic diagram of the structure of the second bushing 140 in the rotating shaft device 10 of the first embodiment of this application. In one embodiment, the inner surface of the second bushing 140 has a second bushing planar portion 142 (e.g., Figure 22 As shown in the figure, the outer surface of the second shaft core 300 is provided with a second shaft core plane portion (not shown) parallel to the second shaft sleeve plane portion 142. In the closed state, the second shaft sleeve plane portion 142 and the second shaft core plane portion are arranged opposite to each other. In another embodiment, in the closed state, the second shaft sleeve plane portion 142 and the second shaft core plane portion have a third included angle. For a detailed description of the locking shaft device 10 at different angles of the second shaft sleeve plane portion 142 and the second shaft core plane portion, please refer to the relevant content of the first shaft sleeve plane portion 132 and the first shaft core plane portion 230 described above, which will not be repeated here.

[0191] In one embodiment, the first bushing 130, the first connecting rod 150, and the second bushing 140 are sheet metal parts or metal injection molded parts. Sheet metal processing is a comprehensive cold working process for thin metal sheets. Using sheet metal processing simplifies the manufacturing process of the first bushing 130, the first connecting rod 150, and the second bushing 140, and facilitates large-scale production. Metal injection molding (MIM) is a precision manufacturing process that involves injecting a mixture of metal powder and plastic or wax into a metal mold and molding it under high temperature and pressure. MIM technology offers advantages such as high efficiency, low cost, and high precision. Using MIM technology, the first bushing 130, the first connecting rod 150, and the second bushing 140 can be manufactured quickly and accurately.

[0192] Please return to the first embodiment of this application. The following describes one possible implementation of the second shaft core 300 and the base 500 in the first embodiment. In one embodiment, the second shaft core 300 and the base 500 are in an interference fit, causing torque to be generated during relative sliding between the second shaft core 300 and the base 500. In another embodiment, the second shaft core 300 and the base 500 can be in indirect contact (e.g., ...). Figure 5 (as shown) or direct contact (such as) Figure 23 As shown, the friction between the second shaft core 300 and the base 500 during the sliding process of the second shaft core 300 can be used to increase the total torque provided by the rotating shaft device 10, which is beneficial to ensure that the rotating shaft device 10 is stably maintained at a specific angle.

[0193] Please continue reading. Figures 5 to 7 In one embodiment, the second shaft core 300 slides relative to the base 500 along a first direction A, and the first direction A intersects the axis of the second shaft core 300. In this embodiment, the first direction A is the length direction of the rotating shaft device 10. The sliding of the second shaft core 300 along the first direction A can effectively utilize the length dimension of the rotating shaft device 10, which is beneficial to reducing the volume of the rotating shaft device 10.

[0194] In one embodiment, the second shaft core 300 slides relative to the base 500 along a fourth direction (not shown), the fourth direction being a straight line having a component along the first direction A.

[0195] In one embodiment, the second shaft core 300 slides relative to the base 500 in an arcuate direction (not shown), the arcuate direction having a component along a first direction A.

[0196] Please continue reading. Figure 5 , Figure 7 and Figure 16 In one embodiment, the rotating shaft device 10 further includes two sliders 600 (e.g., Figure 7 and Figure 16 As shown), the two sliders 600 are respectively fixed at both ends of the second shaft core 300 along the second direction B (as shown). Figure 16 As shown), the base 500 includes two support plates 510 arranged and spaced apart along the second direction B (as shown). Figure 7 As shown), the two sliders 600 and the second shaft core 300 are located between the two support plates 510 along the second direction B (as shown). Figure 5 (As shown). The slider 600 and the support plate 510, which are arranged on the same side along the second direction B, are slidably connected and can slide relative to each other. The second direction B is parallel to the axis of the second shaft core 300.

[0197] In this embodiment, the second shaft core 300 is slidably connected to the base 500 via two sliders 600. The two sliders 600 are designated as slider 600a and slider 600b, and the two support plates 510 are designated as first support plate 510a and second support plate 510b. The opposite ends of sliders 600a and 600b along the second direction B are fixedly connected to the two ends of the second shaft core 300 along the second direction B. The opposite ends of sliders 600a and 600b along the second direction B can be slidably connected to the first support plate 510a and the second support plate 510b, respectively, allowing sliders 600a, the second shaft core 300, and sliders 600b to slide relative to the first support plate 510a and the second support plate 510b. In this embodiment, the second shaft core 300 also has an interference fit with a second bushing 140, which transmits power to the second shaft core 300, thereby causing the second shaft core 300 to slide relative to the base 500.

[0198] In one embodiment, the base 500 may include four support plates 510, wherein two support plates 510 are arranged along the second direction B and spaced apart, and the other two support plates 510 are arranged along the first direction A and spaced apart, the four support plates 510 forming a frame (e.g., Figure 7 (As shown).

[0199] In one embodiment, two support plates 510 arranged along the first direction A are provided with equipment mounting holes 516, and the base 500 is fixed to the equipment body through the equipment mounting holes 516.

[0200] Please continue reading. Figure 7 and Figure 16 In one embodiment, in the slider 600 and the support plate 510 arranged on the same side along the second direction B, the support plate 510 is provided with a protrusion 511 (e.g., ...) on the side of the slider 600 along the second direction B. Figure 7 As shown), the slider 600 has a first groove 610 on the side facing the support plate 510 (as shown). Figure 7 and Figure 16As shown, the protrusion 511 is located within the first groove 610 and can slide relative to it.

[0201] In this embodiment, the protrusion direction of the protrusion 511 is the same as the concave direction of the first groove 610, and the shapes of the protrusion 511 and the first groove 610 are matched. The slider 600 and the support plate 510 are slidably connected through the engagement of the first groove 610 and the protrusion 511. This solution achieves a sliding connection through the engagement of the protrusion and concave parts, which is simple in structure and easy to manufacture.

[0202] In this embodiment, the extension directions of the protrusion 511 and the first groove 610 are parallel to the first direction A, so that the second shaft core 300 slides relative to the base 500 along the first direction A.

[0203] In one embodiment, the protrusion 511 and the groove wall of the first groove 610 are in an interference fit. In this embodiment, the interference fit between the protrusion 511 and the first groove 610 means that the protrusion 511 and the first groove 610 experience a certain frictional resistance during relative sliding, which can increase the torque and improve the stability of the rotating shaft device 10. In this embodiment, the interference fit between the protrusion 511 and the groove wall of the first groove 610 causes indirect contact and interference fit between the second shaft core 300 and the base 500.

[0204] In one embodiment, the thickness of the protrusion 511 is set to be greater than the width of the first groove 610. The protrusion 511 is pressed into the first groove 610, so that the protrusion 511 and the groove wall of the first groove 610 interfere with each other to generate torque.

[0205] The following describes another possible implementation of the second shaft core 300 and the base 500 in the first embodiment of this application. Please refer to... Figure 23 , Figure 23 This is a schematic diagram of the structure of a rotating shaft device 10 provided in one embodiment of the present application. In one embodiment, the base 500 includes two support plates 510 spaced apart along a second direction B. Both support plates 510 are provided with base grooves 514. The two ends of a second shaft core 300 pass through the base grooves 514 along the second direction B. The base grooves 514 extend along a first direction A. The second shaft core 300 slides within the base grooves 514 along the first direction A, thereby enabling the first bushing assembly 100 to slide relative to the base 500 along the first direction A.

[0206] In this embodiment, the base groove 514 penetrates both end faces of the support plate 510 along the second direction B, and extends along the first direction A, so that one end of the second shaft core 300 located in the base groove 514 can slide along the first direction A. Since the first direction A is the length direction of the rotating shaft device 10, setting the second shaft core 300 to slide along the first direction A can effectively utilize the length dimension of the rotating shaft device 10. The second shaft core 300 interferes with the other end of the first bushing assembly 100, and the second shaft core 300 can slide relative to the base 500 along the first direction A, thus enabling the first bushing assembly 100 to slide along the first direction A.

[0207] In one embodiment, the second shaft core 300 interferes with the inner wall of the base slide groove 514. In this embodiment, the friction between the second shaft core 300 and the base slide groove 514 can be used to increase the total torque provided by the rotating shaft device 10, thereby improving the stability of the rotating shaft device 10. In this embodiment, the interference fit between the second shaft core 300 and the inner wall of the base slide groove 514 allows the second shaft core 300 and the base 500 to directly contact and interfere with each other.

[0208] The following describes one possible implementation of the support 400 and base 500 in the first embodiment of this application. Please continue reading. Figure 7 In one embodiment, the support frame 400 and the base 500 are interfering with each other, causing torque to be generated during relative rotation of the support frame 400 and the base 500. In this embodiment, the support frame 400 and the base 500 can rotate relative to each other, and their interfering with each other allows the frictional force of the support frame 400 when rotating relative to the base 500 to provide a certain torque. This increases the total torque provided by the rotating shaft device 10 without increasing its size, thereby enhancing the stability of the rotating shaft device 10 when supporting the electronic device 1.

[0209] Please continue reading. Figure 7 In one embodiment, the base 500 includes two support plates 510 arranged and spaced apart along a second direction B. One end of a support frame 400 is located between the two support plates 510, and one end of the support frame 400 is rotatably connected to both sides of the two support plates 510 along the second direction B. The second direction B is parallel to the first shaft core 200. In this embodiment, one end of the support frame 400 along the first direction A is located between the two support plates 510. The one end of the support frame 400 along the first direction A is rotatably connected to both support plates 510, allowing the support frame 400 to rotate relative to the base 500.

[0210] In one embodiment, the two support plates 510 of the base 500 are respectively in interference fit with the support frame 400. In this embodiment, the interference fit between the support plates 510 and the support frame 400 allows the frictional force of the support frame 400 rotating relative to the support plates 510 to be used to increase the total torque provided by the rotating shaft device 10.

[0211] Please continue reading. Figure 7 In one embodiment, the rotating shaft device 10 further includes a first rotating member 430 and a second rotating member 520. The first rotating member 430 is fixedly connected to the support frame 400, and the second rotating member 520 is fixedly connected to the base 500. The support frame 400 is rotatably connected to the base 500 through the cooperation of the first rotating member 430 and the second rotating member 520.

[0212] In this embodiment, the first rotating member 430 is located on the side of the support frame 400 facing the support plate 510, and the second rotating member 520 is located on the inner side of the support plate 510. The support frame 400 rotates relative to the base 500, causing the first rotating member 430 to rotate relative to the second rotating member 520.

[0213] In one embodiment, the surface of the first rotating member 430 facing the support 400 is provided with a relief groove 435, one end of the support 400 is located in the relief groove 435, and the support 400 is fixed to the bottom of the relief groove 435 by screws.

[0214] In one embodiment, the first rotating member 430 includes grooves 436 at both ends along the second direction B, and the second rotating member 520 is a sliding protrusion 523. The grooves 436 and the sliding protrusion 523 are matched in shape. The first rotating member 430 and the second rotating member 520 cooperate to realize the rotational connection between the support frame 400 and the base 500.

[0215] In one embodiment, the first rotating member 430 is integrally formed with the support frame 400, and the second rotating member 520 is integrally formed with the base 500. This embodiment helps to improve the stability of the rotatable connection between the support frame 400 and the base 500.

[0216] In one embodiment, the second rotating member 520 further includes a stop portion 521 protruding toward the first rotating member 430. The stop portion 521 is located at one end of the second rotating member 520 along the first direction A. When the first rotating member 430 rotates relative to the second rotating member 520 to the stop portion 521, the first rotating member 430 stops rotating.

[0217] Please continue reading. Figure 7In one embodiment, the first rotating member 430 and the second rotating member 520 are in an interference fit. In this embodiment, the friction between the first rotating member 430 and the second rotating member 520 during relative rotation provides torque, thereby increasing the total torque of the rotating shaft device 10 without increasing its volume. In this embodiment, the support frame 400 and the base 500 are in an interference fit due to the interference fit between the first rotating member 430 and the second rotating member 520.

[0218] Please see Figure 17 , Figure 17 for Figure 5 The schematic diagram of a partial structure of the rotating shaft device 10 of the first embodiment shown illustrates that, in one embodiment, the surface of the first rotating member 430 facing away from the support frame 400 is provided with a groove 434, and the surface of the support frame 400 facing the base 500 is provided with a buckle 470. The buckle 470 is engaged in the groove 434, thereby fixing the first rotating member 430 and the support frame 400 relatively. In this embodiment, the buckle 470 and the groove 434 further enhance the connection stability between the first rotating member 430 and the support frame 400.

[0219] The assembly method and total torque analysis of the rotating shaft device 10 provided in the first embodiment of this application are described below. Please continue reading. Figure 5 and Figure 7 In assembly such Figure 5 In the process of assembling the rotating shaft device 10 as shown, the second shaft core 300 is inserted into the second shaft sleeve 140 of the first shaft sleeve assembly 100, then the first shaft sleeve 130 of the first shaft sleeve assembly 100 is placed in the clearance hole 410 of the support 400, and the first end 210 and the second end 220 of the first shaft core 200 are inserted into the first shaft core mounting hole 420 of the support 400 and the first shaft sleeve 130 of the first shaft sleeve assembly 100, thus assembling the device as shown. Figure 15 The partial structure is shown. The two ends of the second shaft core 300 are respectively inserted into the through holes 620 of the two sliders 600, and assembled as shown. Figure 16 The partial structure is shown. The support frame 400 and the first rotating member 430 are then fixedly connected by screws, and the buckle 470 of the support frame 400 is engaged in the slot 434 of the first rotating member 430, as shown. Figure 17 As shown. Finally, slide the first groove 610 of the slider 600 into the protrusion 511 from the end near the second rotating member 520 along the first direction A, and slide the first rotating member 430 into the second rotating member 520 from the end away from the protrusion 511 along the first direction A, so that the rotating shaft device 10 finally presents as shown. Figure 5 The structure shown. In Figure 5In the rotating shaft device 10 shown, the base 500 is integrally formed, which can improve the structural strength of the rotating shaft device 10, reduce the welding process, and the rotating shaft device 10 has a disassembly and assembly method of upper and lower parts, which helps to reduce the difficulty and cost of assembly and rework.

[0220] Please continue reading. Figure 5 In one embodiment, M 总 =k1 M1+k2 M2+k3 M3+k4 M4. Where M... 总 for Figure 5 The total torque in the illustrated embodiment is generated as follows: M1 is generated at the interference fit between the first shaft core 200 and the first bushing 130; M2 is generated at the interference fit between the second shaft core 300 and the second bushing 140; M3 is generated at the rotatable connection between the support frame 400 and the base 500; and M4 is generated at the sliding connection between the slider 600 and the base 500. k1 to k4 are the contribution coefficients of the torque-generating locations to the total torque. These contribution coefficients are related to the structural layout and dimensions of the rotating shaft device; for details, please refer to [reference needed]. Figure 8 The relevant description states that torque is generated at the four locations mentioned above, which can increase the overall torque M of the rotating shaft assembly 10. 总 This allows the hinge device 10 to support larger electronic devices or to support electronic devices at large angles, or to reduce the volume of the hinge device 10 when the supported electronic device is fixed, which is beneficial to achieving a lightweight and thin design of the electronic device as a whole.

[0221] In some implementations, torque can be generated by interfering with certain locations; for example, M 总 =k1 M1+k2 M2+k3 M3. For example, M 总 =k1 M1+k2 M2+ k4 M4.

[0222] The implementation of the rotating shaft device 10 provided in the second embodiment of this application is described below.

[0223] Please see Figures 24 to 26 , Figure 24 This is a schematic diagram of the rotating shaft device 10 provided in the second embodiment of this application in the open state. Figure 25 for Figure 24 The schematic diagram shown is of the structure of the rotating shaft device 10 in the closed state according to the second embodiment. Figure 26 for Figure 24An exploded view of the rotating shaft device 10 of the second embodiment shown.

[0224] In one embodiment, the rotating shaft device 10 has an open state and a closed state, and the rotating shaft device 10 includes a base 500, a support frame 400, a first shaft core 200, a second shaft core 300, and a first bushing assembly 100 (e.g., Figure 26 (As shown). The support frame 400 is rotatably connected to the base 500 so that the support frame 400 can be opened or closed relative to the base 500 (in combination). Figure 24 and Figure 25 As shown). The first shaft core 200 is fixed to the support frame 400 (in conjunction with). Figures 24 to 26 As shown). The second shaft core 300 is slidably connected to the base 500 (in combination). Figures 24 to 26 As shown). The first end 110 of the first bushing assembly 100 is sleeved on the first shaft core 200 and can rotate relative to the first shaft core 200 (in conjunction with). Figures 24 to 26 As shown), the second end 120 of the first bushing assembly 100 is sleeved on the second shaft core 300 and can rotate relative to the second shaft core 300 (in conjunction with...). Figures 24 to 26 As shown), the two ends of the first bushing assembly 100 are respectively interfered with the first shaft core 200 and the second shaft core 300, so that during the switching between the open and closed states of the rotating shaft device 10, the first bushing assembly 100, the first shaft core 200 and the second shaft core 300 are used to provide torque to the rotating shaft device 10.

[0225] In one embodiment, M 总 =k1 M1+k2 M2, where M 总 for Figure 24 The total torque in the illustrated embodiment is generated by M1 at the position where the first shaft core 200 interferes with the first end 110 of the first bushing assembly 100, and by M2 at the position where the second shaft core 300 interferes with the second end 120 of the first bushing assembly 100. Generating torque at these two positions increases the overall torque M of the rotating shaft device 10. 总 This allows the hinge device 10 to support larger electronic devices or to support electronic devices at large angles, or to reduce the volume of the hinge device 10 when the supported electronic device is fixed, which is beneficial to achieving a thinner and lighter overall design of the electronic device. The beneficial effects of the interference fit between the two ends of the first bushing assembly 100 and the first shaft core 200 and the second shaft core 300, respectively, can be specifically analyzed in the first embodiment, and will not be repeated here.

[0226] It should be noted that Examples 1, 2 and 3 of the first bushing 130 and the second bushing 140 in the first embodiment are also applicable to the implementation of the first bushing 130 and the second bushing 140 in the second embodiment.

[0227] The following describes one possible implementation of the second shaft core 300 and the base 500 in the second embodiment of this application. Please continue reading. Figures 24 to 26 Unlike the first embodiment, in the second embodiment, the rotating shaft device 10 further includes a slide plate 700 and a shaft core fixing member 800 that are fixedly connected (e.g., ...). Figures 24 to 26 As shown), the base 500 includes two support plates 510 arranged along the second direction B and spaced apart. The inner sidewall of each support plate 510 is provided with a second groove 512 (as shown). Figure 26 As shown), the two ends of the slide plate 700 along the second direction B are located within the second groove 512 and can slide relative to the second groove 512 (in combination with...). Figures 24 to 26 As shown), part of the second shaft core 300 is fixed to the shaft core fixing part 800 (in combination). Figure 24 and Figure 26 As shown in the figure, part of the second shaft core 300 is rotatably connected to the second end 120 of the first shaft sleeve assembly 100.

[0228] In this embodiment, the second grooves 512 of the two support plates 510 are arranged opposite to each other, and the slide plate 700 is located between the two second grooves 512. Both ends of the slide plate 700 slide within the second grooves 512 along their extending direction. A portion of the second shaft core 300 is fixed to the shaft core fixing member 800, and a portion of the second shaft core 300 is rotatably connected to the second end 120 of the first shaft sleeve assembly 100. That is, the second shaft core 300 is fixed relative to the shaft core fixing member 800, and the second end 120 of the first shaft sleeve assembly 100 can rotate relative to the second shaft core 300. The first end 110 of the first shaft sleeve assembly 100 is sleeved on the first shaft core 200 and can rotate relative to the first shaft core 200. The rotating shaft device 10 in this embodiment has a compact structure, which helps to reduce the volume of the rotating shaft device 10.

[0229] In one embodiment, the slide plate 700 and the second groove 512 of the support plate 510 are in interference engagement. This design allows the frictional force generated when the slide plate 700 slides in the second groove 512 to be used to increase the total torque provided by the rotating shaft device 10. In this embodiment, the interference engagement between the slide plate 700 and the second groove 512 of the support plate 510 results in indirect contact and interference engagement between the second shaft core 300 and the base 500.

[0230] In one embodiment, a portion of the second shaft core 300 interferes with the second end 120 of the first bushing assembly 100. This design allows the frictional force generated when the second end 120 of the first bushing assembly 100 rotates relative to the portion of the second shaft core 300 to enhance the total torque provided by the rotating shaft device 10.

[0231] In one embodiment, the second groove 512 extends along the first direction A (e.g., Figure 26As shown), this allows the slide plate 700 to slide relative to the base 500 along the first direction A.

[0232] In one embodiment, the second groove 512 extends along a fourth direction (not shown), which is a straight line and has a component along the first direction A.

[0233] In one embodiment, the second groove 512 extends along an arcuate direction (not shown), the arcuate direction having a component along a first direction A.

[0234] Please refer to the following: Figure 26 , Figure 27 and Figure 28 , Figure 27 for Figure 24 A partial structural schematic diagram of the rotating shaft device 10 of the second embodiment is shown. Figure 28 for Figure 24 The schematic diagram of a partial structure of the rotating shaft device 10 of the second embodiment shown illustrates that, in one embodiment, the rotating shaft device 10 includes two shaft core fixing members 800 (e.g., Figure 28 As shown), the two shaft core fixing parts 800 are fixed to the slide plate 700 at intervals along the second direction B (as shown). Figure 26 As shown), the second shaft core 300 passes through the fixing holes 810 of the two shaft core fixing members 800 and is fixed relative to the fixing holes 810 (in combination). Figure 26 and Figure 28 As shown), the second end 120 of the first bushing assembly 100 is sleeved in the middle of the second shaft core 300 and located between the two shaft core fixing parts 800 (in combination). Figure 26 and Figure 27 (As shown).

[0235] In this embodiment, two shaft core fixing members 800 are fixedly connected to the slide plate 700. When the slide plate 700 slides in the second groove 512 of the support plate 510, the slide plate 700 drives the shaft core fixing members 800 to slide relative to the base 500 along the extending direction of the second groove 512. The two ends of the second shaft core 300 along the second direction B are respectively located in the fixing holes 810 of the two shaft core fixing members 800, and the portion between the two ends of the second shaft core 300 is rotatably connected to the first end 110 of the first bushing assembly 100. In some embodiments, the rotating shaft device 10 may have only one shaft core fixing member 800, and one end of the shaft core fixing member 800 is provided with two fixing holes 810 spaced apart. The two fixing holes 810 are respectively used for fixed engagement with the two ends of the second shaft core 300.

[0236] Please refer to the following: Figure 26 and Figure 29 , Figure 29 for Figure 24The schematic diagram of a partial structure of the rotating shaft device 10 of the second embodiment shown illustrates that, in one embodiment, a support plate 510 of the base 500 is provided with a slide plate mounting hole 513 (e.g., Figure 29 As shown), the slide plate 700 is inserted into the base 500 through the slide plate mounting hole 513 and slides into the second groove 512 of the support plate 510 (combined with...). Figure 26 and Figure 29 As shown, the second groove 512 and the slide plate mounting hole 513 overlap in most parts when projected onto the second direction B. This embodiment simplifies the installation operation of the slide plate 700.

[0237] The following describes one possible implementation of the support frame 400 and base 500 in the second embodiment of this application. Please continue reading. Figure 26 The support frame 400 and the base 500 are rotatably connected by a first rotating member 430 and a second rotating member 520. In one embodiment, the first rotating member 430 includes a first slide block 432 and a second slide block 433. The first slide block 432 includes a first receiving groove 4321 facing away from the bottom opening of the base 500. The second slide block 433 is located in the first receiving groove 4321 and can rotate relative to the first slide block 432. The first slide block 432 is rotatably connected to the base 500, and the second slide block 433 is fixed to the support frame 400.

[0238] In this embodiment, the outer walls of the second slide block 433 at both ends along the second direction B can rotate relative to the first receiving groove 4321 of the first slide block 432 along the inner wall of the second direction B. The outer walls of the first slide block 432 at both ends along the second direction B can rotate relative to the base 500 along the inner wall of the second direction B. That is, the second slide block 433 can rotate relative to the base 500 in two stages, which is beneficial to increasing the opening and closing angle of the second slide block 433. The second slide block 433 is fixedly connected to the support frame 400. Since the unfolding and closing of the support frame 400 corresponds to the open and closed states of the rotating shaft device 10, the opening and closing angle of the second slide block 433 is increased, which is beneficial to increasing the opening and closing angle of the support frame 400. This allows the rotating shaft device 10 to unfold to a larger angle, meeting the application needs of different scenarios.

[0239] In one embodiment, the second rotating member 520 of the base 500 is a second sliding groove 530 located inside the base 500 (e.g., Figure 26 As shown), the second slide groove 530 is arc-shaped. The first slide block 432 has second sliding protrusions 4322 corresponding to both ends along the second direction B (as shown). Figure 26 As shown in the figure, the second slide groove 530 and the second sliding protrusion 4322 cooperate with each other to realize the rotational connection between the base 500 and the first slide block 432. In one embodiment, the number of the second slide groove 530 and the second sliding protrusion 4322 can both be one or two.

[0240] In one embodiment, the inner walls of the first receiving groove 4321 along both ends of the second direction B are provided with a third sliding groove 4323 (e.g. Figure 26 As shown), the second slide block 433 has a third sliding protrusion 4331 on its outer wall along the second direction B (as shown). Figure 26 As shown), the third slide groove 4323 cooperates with the third sliding protrusion 4331 to realize the rotational connection between the first slide block 432 and the second slide block 433. In one embodiment, the first receiving groove 4321 is provided with a sliding protrusion (not shown) along the inner wall of the second direction B, and the second slide block 433 is provided with a slide groove (not shown) along the outer wall of the second direction B.

[0241] In one embodiment, the base 500 and the first slide rail block 432 are in an interference fit. This design is beneficial for increasing friction, thereby improving torque. In this embodiment, the interference fit between the base 500 and the support frame 400 is achieved through the interference fit between the base 500 and the first slide rail block 432.

[0242] In one embodiment, the first slide block 432 and the second slide block 433 are in an interference fit. This design helps to increase friction, thereby improving torque.

[0243] In one embodiment, the base 500 and the first slide rail block 432 are in an interference fit, and the first slide rail block 432 and the second slide rail block 433 are in an interference fit. In this solution, the torque is increased through two levels of interference fit.

[0244] Please continue reading. Figure 25 and Figure 26 In one embodiment, the second slide block 433 includes a second receiving groove 4332 opposite to the bottom opening of the base 500, and the first end 110 of the first bushing assembly 100 is located in the second receiving groove 4332 and fixed to the second slide block 433.

[0245] In one embodiment, the second receiving slot 4332 is provided with a first clearance slot 4333 (e.g., Figure 26 As shown), the support frame 400 has a second clearance groove 4334 at one end adjacent to the second slide rail block 433. The first clearance groove 4333 and the second clearance groove 4334 cooperate to form a clearance groove. The first shaft core 200 passes through the first end 110 of the first bushing assembly 100, and the two ends of the first end 110 are respectively located in the clearance groove formed by the first clearance groove 4333 and the second clearance groove 4334, so that one end of the support frame 400, the first end 110 of the first bushing assembly 100 and the first shaft core 200 are located in the second receiving groove 4332 of the second slide rail block 433 (as shown). Figure 26 (As shown). This design makes the rotating shaft device 10 smaller.

[0246] The assembly method and total torque analysis of the second embodiment of this application are described below. Please continue reading. Figures 24 to 26 In assembly such Figure 24 In the process of the rotating shaft device 10 shown, the first end 110 of the first bushing assembly 100 is first sleeved onto the first shaft core 200. Then, the first end 110 of the first bushing assembly 100 is placed in the second receiving groove 4332 of the second slide block 433. Next, the support 400 and the second slide block 433 are fixed with screws, so that the first clearance groove 4333 of the second receiving groove 4332 and the second clearance groove 4334 of the support 400 cooperate to form a clearance groove. The first end 110 of the first bushing assembly 100... The two ends of 0 are respectively located in the clearance groove formed by the first clearance sub-groove 4333 and the second clearance sub-groove 4334, so that one end of the support 400, the first end 110 of the first bushing assembly 100 and the first shaft core 200 are located in the second receiving groove 4332 of the second slide block 433. Then the second slide block 433 is placed in the first receiving groove 4321 of the first slide block 432, and the third sliding protrusion 4331 of the second slide block 433 slides into the third sliding groove 4323 of the first slide block 432.

[0247] The second end 120 of the first bushing assembly 100 is fitted onto the second shaft core 300, and then both ends of the second shaft core 300 are inserted into the fixing holes 810 of the shaft core fixing member 800. The structure of the first bushing assembly 100, the first shaft core 200, the second shaft core 300, and the shaft core fixing member 800 is as follows: Figure 28 As shown. The slide plate 700 is inserted into the base 500 through the slide plate mounting hole 513 and slid into the second groove 512 of the support plate 510. Then, the slide plate 700 is fixed to the shaft core fixing member 800 with screws. Next, the second sliding protrusion 4322 of the first slide rail block 432 is slid from the second slide groove 530 into the second slide groove 530 along the first direction A near the end of the second groove 512, so that the rotating shaft device 10 is in the position shown. Figure 24 The structure shown. In Figure 24 In the rotating shaft device 10 shown, the base 500 is integrally formed, which can improve the structural strength of the rotating shaft device 10, reduce the welding process, and the rotating shaft device 10 has a disassembly and assembly method of upper and lower parts, which helps to reduce the difficulty and cost of assembly and rework.

[0248] In this embodiment, when the user applies force to the support frame 400 and opens it relative to the base 500, the support frame 400 and the second slide rail block 433 rotate synchronously, causing the first slide rail block 432 to rotate relative to the base 500. This, in turn, causes the first end 110 of the first bushing assembly 100 to rotate relative to the first shaft core 200 and the second end 120 of the first bushing assembly 100 to rotate relative to the second shaft core 300, thereby causing the slide plate 700 to slide relative to the base 500. When the rotating shaft device 10 is in the open state, since the slide plate 700, the second shaft core 300, and the first bushing assembly 100 are located on the back side of the support frame 400 when it is open relative to the base 500, the support frame 400 can appropriately shield the first bushing assembly 100, the first shaft core 200, and the second shaft core 300 inside the rotating shaft device 10. Therefore, when the rotating shaft device 10 is applied to the electronic device 1, the appearance of the electronic device 1 is more refined.

[0249] exist Figure 24 In the rotating shaft device 10 shown, there is an interference fit between the first end 110 of the first bushing assembly 100 and the first shaft core 200, and at least one interference fit between the second end 120 of the first bushing assembly 100 and the second shaft core 300, between the slide plate 700 and the base 500, between the second slide block 433 and the first slide block 432, and between the first slide block 432 and the base 500.

[0250] In one embodiment, M 总 =k1 M1+k2 M2+k5 M5+k6 M6+k7 M7, where M 总 for Figure 24 The total torque in the illustrated embodiment is generated as follows: M1 is generated at the interference fit between the first shaft core 200 and the first end 110 of the first bushing assembly 100; M2 is generated at the interference fit between the second shaft core 300 and the second end 120 of the first bushing assembly 100; M5 is generated at the rotatable connection between the first slide block 432 and the second slide block 433; M6 is generated at the rotatable connection between the first slide block 432 and the second slide groove 530 of the base 500; and M7 is generated at the slidable connection between the slide plate 700 and the base 500. k1, k2, k5, k6, and k7 are the contribution coefficients of the torque-generating locations to the total torque. Through the above five interference fits, the total torque of the rotating shaft device 10 can be comprehensively increased.

[0251] In some implementations, torque can be generated by interfering with certain locations; for example, M 总 =k1 M1+k2 M2+k5 M5. For example, M 总 =k1 M1+k2 M2+k5 M5+k6 M6.

[0252] The implementation of the rotating shaft device 10 provided in the third embodiment of this application is described below.

[0253] Please see Figures 30 to 32 , Figure 30 This is a schematic diagram of the rotating shaft device 10 in the open state according to the third embodiment of this application. Figure 31 for Figure 30 The diagram shown is a structural schematic of the rotating shaft device 10 in the closed state according to the third embodiment. Figure 32 for Figure 30 An exploded view of the rotating shaft device 10 of the third embodiment shown.

[0254] In one embodiment, the rotating shaft device 10 has an open state and a closed state, and the rotating shaft device 10 includes a base 500, a support frame 400, a first shaft core 200, a second shaft core 300, and a first bushing assembly 100 (e.g., Figure 32 (As shown). The support frame 400 is rotatably connected to the base 500 so that the support frame 400 can be opened or closed relative to the base 500 (in combination). Figure 30 and Figure 31 As shown). The first shaft core 200 is fixed to the support frame 400 (as shown). Figure 30 As shown). The second shaft core 300 is slidably connected to the base 500 (in combination). Figures 30 to 32 As shown). The first end 110 of the first bushing assembly 100 is sleeved on the first shaft core 200 and can rotate relative to the first shaft core 200 (in conjunction with). Figures 30 to 32 As shown), the second end 120 of the first bushing assembly 100 is sleeved on the second shaft core 300 and can rotate relative to the second shaft core 300 (in conjunction with...). Figures 30 to 32 As shown), the two ends of the first bushing assembly 100 are respectively interfered with the first shaft core 200 and the second shaft core 300, so that during the switching between the open and closed states of the rotating shaft device 10, the first bushing assembly 100, the first shaft core 200 and the second shaft core 300 are used to provide torque to the rotating shaft device 10.

[0255] In one embodiment, M 总 =k1 M1+k2 M2, where M 总 for Figure 30The total torque in the illustrated embodiment is generated by M1 at the position where the first shaft core 200 interferes with the first end 110 of the first bushing assembly 100, and by M2 at the position where the second shaft core 300 interferes with the second end 120 of the first bushing assembly 100. Generating torque at these two positions increases the overall torque M of the rotating shaft device 10, enabling it to support larger electronic devices or support electronic devices at large angles. Alternatively, when the supported electronic device is fixed, the size of the rotating shaft device 10 can be reduced, facilitating a slimmer and lighter overall design for the electronic device. The beneficial effects of the interference fit between the two ends of the first bushing assembly 100 and the first shaft core 200 and the second shaft core 300, respectively, can be specifically analyzed in the first embodiment and will not be repeated here.

[0256] It should be noted that Examples 1, 2 and 3 of the first bushing 130 and the second bushing 140 in the first embodiment are also applicable to the implementation of the first bushing 130 and the second bushing 140 in the second embodiment.

[0257] The following describes one possible implementation of the second shaft core 300 and the base 500 in the third embodiment of this application. Please continue reading. Figures 30 to 32 Unlike the first embodiment, in the third embodiment, the rotating shaft device 10 includes a slider 600 (e.g., Figures 30 to 32 As shown), slider 600 is provided with a through hole 620 extending through slider 600 along the second direction B (as shown). Figure 32 As shown), the second shaft core 300 passes through the through hole 620 and is fixed to the slider 600 (in combination). Figure 30 and Figure 32 As shown), and the two ends of the second shaft core 300 extend through the through holes 620, and the second end 120 of the first shaft sleeve assembly 100 is sleeved on at least one end of the second shaft core 300 and can rotate relative to the second shaft core 300 (in conjunction with...). Figure 30 and Figure 32 (As shown). The base 500 includes a support plate 510 extending along the first direction A (as shown). Figures 30 to 32 As shown), slider 600 has a sliding groove 630 that opens toward support plate 510 (as shown). Figure 32 As shown), the support plate 510 passes through the sliding groove 630 along the first direction A, and the slider 600 can slide relative to the support plate 510 (in conjunction with...). Figures 30 to 32 As shown in the figure, the first direction A intersects with the second direction B, and the second direction B is parallel to the axis of the second core 300.

[0258] In this embodiment, the through hole 620 penetrates the two end faces of the slider 600 along the second direction B. The portion between the two ends of the second shaft core 300 is fixedly connected to the slider 600 through the through hole 620. The second end 120 of the first bushing assembly 100 is sleeved on at least one end of the second shaft core 300, thereby realizing the rotational connection between the second end 120 of the first bushing assembly 100 and the second shaft core 300.

[0259] In this embodiment, the base 500 has only one support plate 510, and its overall structure is a ribbed design. The slider 600 has a hook portion 640 at one end facing the support plate 510 (e.g., ...). Figure 32 As shown, the hook portion 640 engages with the support plate 510, allowing the support plate 510 to pass through the sliding groove 630 without disengaging from it, thus achieving a sliding connection between the slider 600 and the support plate 510 along the first direction A. The sliding groove 630 communicates with the through hole 620 and slides along the extension direction of the support plate 510. The portion of the second shaft core 300 located in the through hole 620 is fixedly connected to the slider 600, and both ends of the second shaft core 300 are rotatably connected to the second end 120 of the first bushing assembly 100, enabling the second end 120 of the first bushing assembly 100 to slide relative to the support plate 510.

[0260] In one embodiment, at least one of the following locations is subject to interference fit: between the second shaft core 300 and the inner wall of the through hole 620; between the support plate 510 and the inner wall of the sliding groove 630 of the slider 600; or between the second end 120 of the first bushing assembly 100 and the second shaft core 300. This design is beneficial for increasing the torque of the rotating shaft device 10, thereby improving the support stability of the rotating shaft device 10.

[0261] In this embodiment, the second shaft core 300 and the base 500 are indirectly contacted and interfered with each other through the interference fit between the support plate 510 and the inner wall of the sliding groove 630 of the slider 600.

[0262] In one embodiment, the end of the hook portion 640 of the slider 600 facing the sliding groove 630 is provided with an arc-shaped sliding groove (not shown in the figure), and the two ends of the support plate 510 along the second direction B are provided with arc-shaped sliding protrusions. The sliding groove and the sliding protrusions cooperate to realize the sliding connection between the slider 600 and the base 500. The extension direction of the arc has a component along the first direction A.

[0263] The following describes one possible implementation of the support frame 400 and base 500 in the third embodiment of this application. Please continue reading. Figure 32In one embodiment, a rotating groove 440 is provided at one end of the support frame 400. A support plate 510 is located between the groove walls at both ends of the rotating groove 440 along the second direction B. The support plate 510 is rotatably connected to the groove walls of the rotating groove 440 along both sides of the second direction B. The second direction B intersects with the first direction A and is parallel to the first shaft core 200. In this embodiment, the base 500 has only one support plate 510 and is generally a ribbed structure. The support plate 510 cooperates with the rotating groove 440 to realize the rotatable connection between the base 500 and the support frame 400.

[0264] In one embodiment, the inner wall of the rotating groove 440 is provided with a first rotating member 430, and the support plate 510 has second rotating members 520 on both sides along the second direction B (e.g., Figure 32 (As shown). The second rotating member 520 can be a sliding protrusion, and the first rotating member 430 can be a sliding groove. The sliding protrusion and the sliding groove cooperate to make the support plate 510 and the support frame 400 rotatably connected.

[0265] In one embodiment, the first rotating member 430 and the second rotating member 520 are in an interference fit. This design allows the frictional force generated by the rotation of the second rotating member 520 relative to the first rotating member 430 to be used to increase the total torque provided by the rotating shaft device 10.

[0266] In one embodiment, the support frame 400 includes a first sub-support frame 450 and a second sub-support frame 460 arranged and spaced apart along the second direction B (e.g., ...). Figure 32 As shown), the first sub-support 450 and the second sub-support 460 are fixed by welding or screws. One end of the first sub-support 450 and the second sub-support 460 have notches facing each other. The two notches are combined to form a rotating groove 440. The inner wall of the rotating groove 440 is provided with a first rotating member 430, and the support plate 510 is provided with a second rotating member 520. The two cooperate to achieve a rotating connection.

[0267] In one embodiment, the second rotating member 520 further includes a stop portion 521 protruding toward the first rotating member 430 (e.g., ...). Figure 32 As shown), the stop portion 521 is located at one end of the second rotating member 520 along the first direction A. When the first rotating member 430 rotates relative to the second rotating member 520 to the stop portion 521, the first rotating member 430 stops rotating.

[0268] In one embodiment, the first rotating member 430 on the rotating groove 440 is a sliding protrusion, and the second rotating member 520 on the support plate 510 is a sliding groove.

[0269] Please continue reading. Figures 30 to 32 In one embodiment, the first sub-support 450 and the second sub-support 460 are provided with shaft core fixing holes 451 (e.g., Figure 32As shown, the first shaft core 200 includes a first sub-shaft core 240 and a second sub-shaft core 250 disposed opposite to each other. The first sub-shaft core 240 includes a first end 241 and a second end 242, and the second sub-shaft core 250 includes a first end 251 and a second end 252. The second end 242 of the first sub-shaft core 240 and the first end 251 of the second sub-shaft core 250 are respectively located in the shaft core fixing holes 451 of the first sub-support 450 and the second sub-support 460, so that the first sub-shaft core 240 is fixedly connected to the first sub-support 450 and the second sub-shaft core 250 is fixedly connected to the second sub-support 460. The second end 120 of the first bushing assembly 100 is respectively sleeved on the first end 241 of the first sub-shaft core 240 and the second end 252 of the second sub-shaft core 250, so that the second end 120 of the first bushing assembly 100 is rotatably connected to the first sub-shaft core 240 and the second sub-shaft core 250.

[0270] In this embodiment, the first bushing assembly 100 includes two first bushing sub-assemblies (not shown in the figure), one of which has its first end 110 sleeved on the first sub-shaft core 240, and the other has its first end sleeved on the second sub-shaft core 250.

[0271] exist Figure 30 In the rotating shaft device 10 shown, the first end 110 of the first bushing assembly 100 has an interference fit with the first sub-shaft core 240 and the second sub-shaft core 250. There is at least one interference fit between the second end 120 of the first bushing assembly 100 and the second shaft core 300, between the slider 600 and the support plate 510, and between the support frame 400 and the support plate 510.

[0272] The assembly method and total torque analysis of the third embodiment of this application are described below. Please continue reading. Figures 30 to 32 In assembly such Figure 30 In the process of rotating shaft device 10 shown, firstly, the second end 242 of the first sub-shaft core 240 and the first end 251 of the second sub-shaft core 250 are passed through the shaft core fixing holes 451 of the first sub-support 450 and the second sub-support 460, respectively. Then, the second shaft core 300 is passed through the through hole 620 of the slider 600. Next, the first end of the first bushing assembly 100 is respectively fitted onto the first end 241 of the first sub-shaft core 240 and the second end 252 of the second sub-shaft core 250. Finally, the second end 120 of the first bushing assembly 100 is fitted onto both ends of the second shaft core 300. Finally, the sliding groove 630 of the slider 600 is engaged with the support plate 510, and the first rotating member 430 of the support 400 slides into the second rotating member 520 of the base 500, ultimately causing the rotating shaft device 10 to present the following position: Figure 30 The structure shown.

[0273] In one embodiment, M 总 =k1 M1+k2 M2+k3 M3+k4 M4. Where M... 总 for Figure 30 The total torque in the illustrated embodiment is generated as follows: M1 is generated at the position where the first shaft core 200 interferes with the first end 110 of the first bushing assembly 100; M2 is generated at the position where the second shaft core 300 interferes with the second end 120 of the first bushing assembly 100; M3 is generated at the position where the support frame 400 is rotatably connected to the base 500; and M4 is generated at the position where the slider 600 is slidably connected to the base 500. k1 to k4 are the contribution coefficients of the torque-generating positions to the total torque. These contribution coefficients are related to the structural layout and dimensions of the rotating shaft device; for details, please refer to the relevant documentation. Figure 8 The relevant description states that generating torque at the four positions mentioned above can increase the total torque M of the rotating shaft device 10, enabling the rotating shaft device 10 to support larger electronic devices or to support electronic devices at large angles. Alternatively, when the supported electronic devices are fixed, the volume of the rotating shaft device 10 can be reduced, which is beneficial for achieving a thinner and lighter overall design of the electronic devices.

[0274] In some implementations, torque can be generated by interfering with certain locations; for example, M 总 =k1 M1+k2 M2+k3 M3. For example, M 总 =k1 M1+k2 M2+k4 M4.

[0275] The following describes how the rotating shaft device 10 provided in the fourth embodiment of this application can be implemented.

[0276] Please see Figures 33 to 35 , Figure 33 This is a schematic diagram of the rotating shaft device 10 in the closed state according to the fourth embodiment of this application. Figure 34 for Figure 33 An exploded view of the rotating shaft device 10 of the fourth embodiment is shown. Figure 35 for Figure 33 A partial structural schematic diagram of the rotating shaft device 10 of the fourth embodiment is shown.

[0277] In one embodiment, the rotating shaft device 10 has an open state and a closed state, and the rotating shaft device 10 includes a base 500, a support frame 400, a first shaft core 200, a second shaft core 300, and a first bushing assembly 100 (e.g., Figure 34 (As shown). The support frame 400 is rotatably connected to the base 500 so that the support frame 400 can be opened or closed relative to the base 500 (in combination). Figure 33 and Figure 34 As shown). The first shaft core 200 is fixed to the support frame 400 (as shown). Figure 34 As shown). The second shaft core 300 is slidably connected to the base 500 (in combination). Figure 33 and Figure 34 As shown). The first end 110 of the first bushing assembly 100 is sleeved on the first shaft core 200 and can rotate relative to the first shaft core 200 (in conjunction with). Figure 33 and Figure 34 As shown), the second end 120 of the first bushing assembly 100 is sleeved on the second shaft core 300 and can rotate relative to the second shaft core 300 (in conjunction with...). Figure 33 and Figure 34 As shown), the two ends of the first bushing assembly 100 are respectively interfered with the first shaft core 200 and the second shaft core 300, so that during the switching between the open and closed states of the rotating shaft device 10, the first bushing assembly 100, the first shaft core 200 and the second shaft core 300 are used to provide torque to the rotating shaft device 10.

[0278] In one embodiment, M 总 =k1 M1+k2 M2, where M 总 for Figure 33 The total torque in the illustrated embodiment is generated by M1 at the position where the first shaft core 200 interferes with the first end 110 of the first bushing assembly 100, and by M2 at the position where the second shaft core 300 interferes with the second end 120 of the first bushing assembly 100. Generating torque at these two positions increases the overall torque M of the rotating shaft device 10. 总 This allows the hinge device 10 to support larger electronic devices or to support electronic devices at large angles, or to reduce the size of the hinge device 10 when the supported electronic device is fixed, which is beneficial to achieving a thinner and lighter overall design of the electronic device. The beneficial effects of the interference cooperation between the two ends of the first bushing assembly 100 and the first shaft core 200 and the second shaft core 300, respectively, can be specifically analyzed in the first embodiment, and will not be repeated here.

[0279] The following describes one possible implementation of the second bushing assembly 900, the third shaft core 1000, and the fourth shaft core 1100 according to the fourth embodiment of this application. Please refer to... Figure 34Unlike the first embodiment, in the fourth embodiment, the rotating shaft device 10 further includes a second bushing assembly 900, a third shaft core 1000, and a fourth shaft core 1100. The first bushing assembly 100 and the second bushing assembly 900 are located on either side of the rotation center of the support 400 rotating around the base 500. The third shaft core 1000 is fixed to the support 400, and the fourth shaft core 1100 is slidably connected to the base 500. The first end 910 of the second bushing assembly 900 is sleeved on the third shaft core 1000. It can rotate relative to the third shaft core 1000. The second end 920 of the second shaft sleeve assembly 900 is sleeved on the fourth shaft core 1100 and can rotate relative to the fourth shaft core 1100. The two ends of the second shaft sleeve assembly 900 are respectively interference-fitted with the third shaft core 1000 and the fourth shaft core 1100, so that during the switching between the open and closed states of the rotating shaft device 10, the second shaft sleeve assembly 900, the third shaft core 1000 and the fourth shaft core 1100 are used to provide torque to the rotating shaft device 10.

[0280] In this embodiment, the first shaft core 200 and the third shaft core 1000 are fixed at both ends to the support frame 400, and the second shaft core 300 and the fourth shaft core 1100 are slidably connected to the base 500. The second bushing assembly 900 includes a third bushing 930, a fourth bushing 940, and a second connecting rod 950, which connects the third bushing 930 and the fourth bushing 940. The third bushing 930 is located at the first end 910 of the second bushing assembly 900, and is sleeved on the third shaft core 1000 and can rotate relative to the third shaft core 1000 and interfere with the third shaft core 1000. The fourth bushing 940 is located at the second end 920 of the second bushing assembly 900, and is sleeved on the fourth shaft core 1100 and can rotate relative to the fourth shaft core 1100 and interfere with the fourth shaft core 1100. The second connecting rod 950 is used to transmit power from the third bushing 930 to the fourth bushing 940, enabling the second bushing assembly 900 to rotate as a whole. The third bushing 930 is in interference fit with the third shaft core 1000, and the fourth bushing 940 is in interference fit with the fourth shaft core 1100. This allows the friction generated when the third shaft core 1000 rotates relative to the third bushing 930 and when the fourth shaft core 1100 rotates relative to the fourth bushing 940 to increase the torque provided by the rotating shaft device 10, thereby improving the stability of the rotating shaft device 10 when supporting electronic equipment.

[0281] In one embodiment, the third bushing 930, the second connecting rod 950, and the fourth bushing 940 are integrally formed. This design helps to improve the overall structural stability of the second bushing assembly 900.

[0282] In one embodiment, the third bushing 930 is provided with a third opening 931 penetrating the inner and outer surfaces of the third bushing 930, and the third opening 931 extends axially along the third bushing 930. This design, by providing the third opening 931 in the third bushing 930, facilitates an increase in the rotational range of the third bushing 930 relative to the third shaft core 1000. Furthermore, the third opening 931 can increase the elasticity of the third bushing 930, reduce the contact area between the third shaft core 1000 and the third bushing 930, thereby reducing the amount of wear between the third shaft core 1000 and the third bushing 930, and extending the service life of the third bushing 930 assembly.

[0283] In one embodiment, the fourth bushing 940 is provided with a fourth opening 941 penetrating the inner and outer surfaces of the fourth bushing 940, and the fourth opening 941 extends axially along the fourth bushing 940. This design, by providing the fourth opening 941 in the fourth bushing 940, facilitates an increase in the rotational range of the fourth bushing 940 relative to the fourth shaft core 1100. Furthermore, the fourth opening 941 can increase the elasticity of the fourth bushing 940, reduce the contact area between the fourth shaft core 1100 and the fourth bushing 940, thereby reducing the amount of wear between the fourth shaft core 1100 and the fourth bushing 940, and extending the service life of the fourth bushing 940 assembly.

[0284] In one embodiment, the inner surface of the third bushing 930 has a third bushing planar portion (not shown), and the outer surface of the third shaft core 1000 has a third shaft core planar portion (not shown) parallel to the third bushing planar portion. In the closed state, the third bushing planar portion and the third shaft core planar portion are arranged opposite to each other. In another embodiment, in the closed state, the third bushing planar portion and the third shaft core planar portion have a third included angle (not shown). For a detailed description of the locking mechanism of the shaft at different angles of the third bushing planar portion and the third shaft core planar portion, please refer to the relevant content on the first bushing planar portion and the first shaft core planar portion described above, which will not be repeated here.

[0285] In one embodiment, the inner surface of the fourth bushing 940 has a fourth bushing planar portion (not shown), and the outer surface of the fourth shaft core 1100 has a fourth shaft core planar portion (not shown) parallel to the fourth bushing planar portion. In the closed state, the fourth bushing planar portion and the fourth shaft core planar portion are arranged opposite to each other. In another embodiment, in the closed state, the fourth bushing planar portion and the fourth shaft core planar portion have a third included angle (not shown). For a detailed description of the locking mechanism of the shaft at different angles of the fourth bushing planar portion and the fourth shaft core planar portion, please refer to the relevant content on the first bushing planar portion and the first shaft core planar portion described above, which will not be repeated here.

[0286] In one embodiment, in the closed state, the third bushing plane portion and the third shaft core plane portion are either opposite to each other or have a third included angle, and the fourth bushing plane portion and the fourth shaft core plane portion are either opposite to each other or have a third included angle.

[0287] In one embodiment, the third bushing 930, the second connecting rod 950, and the fourth bushing 940 are sheet metal parts or metal injection molded parts. In this embodiment, sheet metal processing is used, which simplifies the machining process of the third bushing 930, the second connecting rod 950, and the fourth bushing 940 and facilitates mass production. MIM technology offers advantages such as high efficiency, low cost, and high precision. Using MIM technology, the third bushing 930, the second connecting rod 950, and the fourth bushing 940 can be manufactured quickly and accurately.

[0288] Please continue reading. Figures 33 to 35 ,exist Figure 33 In the rotating shaft device 10 shown, the base 500 includes a first support plate 510a and a second support plate 510b arranged and spaced apart along the second direction B. Both the first support plate 510a and the second support plate 510b are provided with a first base groove 514a and a second base groove 514b. The second rotating member 520 is located between the first base groove 514a and the second base groove 514b along the first direction A. The second shaft core 300 is located in the first base groove 514a and interferes with the first base groove 514a (not shown). The fourth shaft core 1100 is located in the second base groove 514b and interferes with the second base groove 514b (not shown).

[0289] In one embodiment, the first base groove 514a and the second base groove 514b extend along the first direction A, so that the third shaft core 1000 and the fourth shaft core 1100 can slide relative to the base 500 along the first direction A.

[0290] In one embodiment, the first base groove 514a and the second base groove 514b extend along a fourth direction, which has a component along the first direction A. The fourth direction is angled to the first direction A and is parallel to the first support plate 510a.

[0291] In one embodiment, the first base groove 514a and the second base groove 514b extend in an arcuate direction, the arcuate direction having a component along a first direction A.

[0292] It should be noted that the various implementations of the positional relationship between the first shaft core 200 and the second shaft core 300 and the virtual central axis, the various implementations of the first shaft sleeve assembly 100, the various implementations of the second shaft core 300 and the base 500, the various implementations of the support frame 400 and the base 500, and the implementations of the second shaft sleeve assembly 900, the third shaft core 1000 and the fourth shaft core 1100 can be used in combination with each other, and are not limited to the embodiments shown in the accompanying drawings of this application.

[0293] The following describes one possible implementation of the support frame 400 and base 500 in the fourth embodiment of this application. Please continue reading. Figures 33 to 35 In one embodiment, the second rotating member 520 includes two arc-shaped first grooves 522 (e.g., Figure 34 As shown), the curvature centers of the two first grooves 522 are located on the same side and away from the bottom of the base 500 (as shown). Figure 34 and Figure 35 As shown), the first rotating member 430 includes two arc-shaped first sliding protrusions 431 (combined with... Figure 33 and Figure 34 As shown), the two first sliding protrusions 431 are respectively located in the two first sliding grooves 522 and can slide relative to the first sliding grooves 522 (in combination with...). Figure 33 and Figure 34 (As shown).

[0294] In this embodiment, the two first grooves 522 are respectively referred to as first groove 522a and first groove 522b (e.g., Figure 34 As shown), the two first sliding bumps 431 are respectively denoted as first sliding bump 431a and first sliding bump 431b (e.g. Figure 34 As shown, the first sliding protrusion 431a rotates within the first sliding groove 522a. If the second rotating member 520 only includes the first sliding groove 522a and the first rotating member 430 only includes the first sliding protrusion 431a, the frictional force generated when the first sliding protrusion 431a rotates within the first sliding groove 522a is relatively small, and the torque it can provide is limited, because the extension path of the first sliding groove 522a matches the movement path of the first sliding protrusion 431a. This solution adds another first slide groove 522b and another first sliding protrusion 431b to the first slide groove 522a and the first sliding protrusion 431a. In actual processing, the curvature of the first slide groove 522a and the first slide groove 522b can be adjusted by designing tolerance matching, so that the first rotating part 430 and the second rotating part 520 can easily achieve interference fit. That is, when the first rotating part 430 rotates in the second rotating part 520, the friction force generated is large, which can provide torque and is conducive to more precise control of the movement gap.

[0295] In one embodiment, the base 500 is provided with second rotating members 520 on both sides along the second direction B. The number of grooves in the second rotating members 520 on both sides may be unequal; that is, one side of the second rotating member 520 includes one arc-shaped groove, and the other side of the second rotating member 520 includes two arc-shaped grooves. The number of sliding protrusions in the first rotating member 430 of the support 400 corresponds to the number of grooves in the second rotating member 520.

[0296] In one embodiment, the first rotating member 430 includes two arc-shaped sliding grooves (not shown), and the second rotating member 520 includes two arc-shaped sliding protrusions (not shown). The two sliding protrusions are respectively located in the two sliding grooves and can slide relative to the sliding grooves.

[0297] The assembly method and total torque analysis of the fourth embodiment of this application are described below. Please continue reading. Figure 33 and Figure 34 In assembly such Figure 33 During the process of the rotating shaft device 10 shown, the assembly method between the first bushing assembly 100, the first shaft core 200, the second shaft core 300, and the support frame 400 is the same as that of the rotating shaft device 10 shown. Figure 5 The assembly method in the rotating shaft device shown is the same, and will not be described again here. After assembling the first bushing assembly 100, the first shaft core 200, the second shaft core 300 and the support frame 400, the third shaft core 1000 is inserted into the first end 910 of the second bushing assembly 900 and the through hole of the support frame 400. The third shaft core 1000 and the first end 910 of the second bushing assembly 900 can rotate relative to each other. The third shaft core 1000 and the through hole of the support frame 400 are fixed relative to each other. The fourth shaft core 1100 is inserted into the second end 920 of the second bushing assembly 900. The fourth shaft core 1100 and the second end 920 of the second bushing assembly 900 can rotate relative to each other. The two ends of the second shaft core 300 are inserted into the first base groove 514a of the base 500, and the two ends of the fourth shaft core 1100 are inserted into the second base groove 514b of the base 500. Then, the first sliding protrusion 431a of the support frame 400 is slid into the first groove 522a of the base 500, and the first sliding protrusion 431b of the support frame 400 is slid into the first groove 522b of the base 500. Finally, the first support plate 510a and the second support plate 510b are fixed along the second direction B with screws, so that the rotating shaft device 10 presents the following appearance. Figure 33 The structure shown.

[0298] Please continue reading. Figure 33 and Figure 34 In one embodiment, M 总 =k1 M1+k2 M2+k8 M8+k9 M9, where M 总 for Figure 33 The total torque in the illustrated embodiment is generated as follows: M1 is generated at the position where the first shaft core 200 interferes with the first end 110 of the first bushing assembly 100; M2 is generated at the position where the second shaft core 300 interferes with the second end 120 of the first bushing assembly 100; M8 is generated at the position where the third shaft core 1000 interferes with the first end 910 of the second bushing assembly 900; and M9 is generated at the position where the fourth shaft core 1100 interferes with the second end 920 of the second bushing assembly 900. Generating torque at these four positions increases the overall torque M of the rotating shaft device 10. 总 This allows the hinge device 10 to support larger electronic devices or to support electronic devices at large angles, or to reduce the volume of the hinge device 10 when the supported electronic device is fixed, which is beneficial to achieving a lightweight and thin design of the electronic device as a whole.

[0299] In some implementations, M 总 =k1 M1+k2 M2+k8 M8+k9 M9+k 10 M 10 +k 11 M 11 +k 12 M 12 +k 13 M 13 M is generated at the position where the second shaft core 300 is slidably connected to the base 500. 10 M is generated at the position where the fourth shaft core 1100 slides on the base 500. 11 The torque M is generated at the position where the first sliding protrusion 431a connects with the first groove 522a. 12 The torque M is generated at the position where the first sliding protrusion 431b connects with the first groove 522b. 13 k1, k2, k8, k9, k 10 k 11 k 12 and k 13 This represents the contribution coefficient of the location where torque is generated to the total torque.

[0300] In some implementations, interference fits can be set at certain locations to generate torque.

[0301] For example, M 总 =k1 M1+k2 M2+k8 M8+k9 M9+k 10 M 10 +k 11 M 11 .

[0302] For example, M 总 =k1 M1+k2 M2+k8 M8+k9 M9+k 12 M 12 +k 13 M 13 .

[0303] The implementation of the rotating shaft device 10 provided in the fifth embodiment of this application is described below.

[0304] Please see Figures 36 to 38 , Figure 36 This is a schematic diagram of the rotating shaft device 10 provided in the fifth embodiment of this application in the open state. Figure 37 for Figure 36 The diagram shown is a structural schematic of the rotating shaft device 10 in the closed state according to the fifth embodiment. Figure 38 for Figure 36 An exploded view of the rotating shaft device 10 of the fifth embodiment shown.

[0305] In one embodiment, the rotating shaft device 10 has an open state and a closed state, and the rotating shaft device 10 includes a base 500, a support frame 400, a first shaft core 200, a second shaft core 300, and a first bushing assembly 100 (e.g., Figure 38 (As shown). The support frame 400 is rotatably connected to the base 500 so that the support frame 400 can be opened or closed relative to the base 500 (in combination). Figure 36 and Figure 37 As shown). The first shaft core 200 is fixed to the support frame 400 (as shown). Figure 38 As shown). The second shaft core 300 is slidably connected to the base 500 (in combination). Figures 36 to 38 As shown). The first end 110 of the first bushing assembly 100 is sleeved on the first shaft core 200 and can rotate relative to the first shaft core 200 (in conjunction with). Figures 36 to 38 As shown), the second end 120 of the first bushing assembly 100 is sleeved on the second shaft core 300 and can rotate relative to the second shaft core 300 (in conjunction with...). Figures 36 to 38As shown), the two ends of the first bushing assembly 100 are respectively interfered with the first shaft core 200 and the second shaft core 300, so that during the switching between the open and closed states of the rotating shaft device 10, the first bushing assembly 100, the first shaft core 200 and the second shaft core 300 are used to provide torque to the rotating shaft device 10.

[0306] In one embodiment, M 总 =k1 M1+k2 M2, where M 总 for Figure 38 The total torque in the illustrated embodiment is generated by M1 at the interference fit between the first shaft core 200 and the first bushing 130, and by M2 at the interference fit between the second shaft core 300 and the second bushing 140. Generating torque at these two locations increases the overall torque M of the rotating shaft device 10. 总 This allows the hinge device 10 to support larger electronic devices or to support electronic devices at large angles, or to reduce the size of the hinge device 10 when the supported electronic device is fixed, which is beneficial to achieving a thinner and lighter overall design of the electronic device. The beneficial effects of the interference cooperation between the two ends of the first bushing assembly 100 and the first shaft core 200 and the second shaft core 300, respectively, can be specifically analyzed in the first embodiment, and will not be repeated here.

[0307] The following describes one possible implementation of the second shaft core 300 and the base 500 in the fifth embodiment of this application. Please continue reading. Figures 36 to 38 Unlike the first embodiment, in the fifth embodiment, the rotating shaft device 10 includes two sliders 600 (e.g., Figures 36 to 38 As shown), the two sliders 600 are provided with a third rotating member 650 at their opposite ends along the second direction B (as shown). Figure 38 As shown), the two sliders 600 are fixedly connected to the two ends of the second shaft core 300 at opposite ends along the second direction B. The base 500 includes two fourth rotating members 515 (as shown) arranged opposite each other along the second direction B. Figure 38 As shown), the third rotating member 650 cooperates with the fourth rotating member 515, so that the second shaft core 300 can slide relative to the base 500.

[0308] In one embodiment, both the third rotating member 650 and the fourth rotating member 515 are arranged in an arc shape, so that the second shaft core 300 can slide relative to the base 500 in an arc direction, wherein the arc direction has a component along the first direction A.

[0309] In this embodiment, the third rotating member 650 can be a protrusion, and the fourth rotating member 515 can be a groove. The protrusion rotates in the groove, causing the slider 600 to be rotatably connected to the base 500. The movement path of the slider 600 relative to the base 500 is a curve. Since the slider 600 is fixedly connected to the second shaft core 300, the second shaft core 300 can also rotate relative to the base 500 in an arc direction. The arc direction has a component along the first direction A, so that during the rotation of the second shaft core 300 relative to the base 500, the second shaft core 300 is displaced in the first direction A.

[0310] The following describes one possible implementation of the support frame 400 and base 500 in the fifth embodiment of this application. Please continue reading. Figure 38 In one embodiment, the base 500 includes two support plates 510 spaced apart along a second direction B, and a support frame 400 is located between the two support plates 510. The support frame 400 has first rotating members 430 at both ends along the second direction B, and the support plates 510 have second rotating members 520 on opposite end faces along the second direction B. The first rotating members 430 and the second rotating members 520 cooperate to allow the support frame 400 to rotate relative to the base 500. The second rotating member 520 also includes a stop portion 521 protruding towards the first rotating member 430. The stop portion 521 is located at one end of the second rotating member 520 along a first direction A. When the first rotating member 430 rotates relative to the second rotating member 520 to the stop portion 521, the first rotating member 430 stops rotating.

[0311] exist Figure 38 In the rotating shaft device 10 shown, there is an interference fit between the first bushing 130 and the first shaft core 200. At least one interference fit between the second bushing 140 and the second shaft core 300, between the first rotating member 430 of the support 400 and the second rotating member 520 of the base 500, and between the slider 600 and the base 500 is beneficial to increasing the torque provided by the rotating shaft device 10 as a whole.

[0312] In one embodiment, the support frame 400 is detachably connected to the support plate. Figure 38 The support plate is not shown.

[0313] In one embodiment, the two support plates 510 are fixed by screws, and the two support plates 510 have a symmetrical "F" shape structure. Specifically, the support plate 510 includes a first connector 517 and a second connector 518 extending along the second direction B. The two first connectors 517 of the two support plates 510 are fixed by screws, and the two second connectors 518 of the two support plates 510 are fixed by screws. A fourth rotating member 515 is located along the first direction A between the first connectors 517 and the second connectors 518, and the middle part of the first bushing assembly 100 is located below the two second connectors 518.

[0314] In one embodiment, the support 400 has a receiving opening 480 that opens toward the first bushing assembly 100, the first end 110 of the first bushing assembly 100 (i.e., the first bushing 130) is located in the receiving opening 480, and the second shaft core 300 is fixedly connected to the side wall of the receiving opening 480 so that the second shaft core 300 is fixed to the support 400.

[0315] The assembly method and total torque analysis of the fifth embodiment of this application are described below. Please continue reading. Figures 36 to 38 In one embodiment, during assembly such as Figure 36 In the process of the rotating shaft device 10 shown, the first bushing 130 is first placed in the receiving opening 480 of the support 400, and then the first shaft core 200 is passed through the first bushing 130. The two ends of the first shaft core 200 are fixed to the support 400. The second bushing 140 is fitted onto the second shaft core 300, and the two ends of the second shaft core 300 are respectively passed through the slider 600. Then, the first rotating member 430 of the support 400 is slid into the second rotating member 520 of the base, and the third rotating member 650 of the slider 600 is slid into the fourth rotating member 515 of the base 500. Finally, the two first connecting members 517 of the two support plates 510 are fixed with screws, and the two second connecting members 518 of the two support plates 510 are fixed with screws, so that the rotating shaft device 10 is finally in the shape shown. Figure 36 The structure shown.

[0316] In one embodiment, M 总 =k1 M1+k2 M2+k3 M3+k4 M4. Where M... 总 for Figure 38 The total torque in the illustrated embodiment is generated as follows: M1 is generated at the interference fit between the first shaft core 200 and the first bushing 130; M2 is generated at the interference fit between the second shaft core 300 and the second bushing 140; M3 is generated at the rotatable connection between the support frame 400 and the base 500; and M4 is generated at the sliding connection between the slider 600 and the base 500. k1 to k4 are the contribution coefficients of the torque-generating locations to the total torque. Generating torque at these four locations increases the overall torque M of the rotating shaft device 10. 总 This allows the hinge device 10 to support larger electronic devices or to support electronic devices at large angles, or to reduce the volume of the hinge device 10 when the supported electronic device is fixed, which is beneficial to achieving a lightweight and thin design of the electronic device as a whole.

[0317] In some implementations, torque can be generated by interfering with certain locations; for example, M 总 =k1 M1+k2 M2+k3 M3. For example, M 总 =k1 M1+k2 M2+k4 M4.

[0318] It should be noted that in the first to fifth embodiments described above, the implementation methods of the first bushing 130 and the second bushing 140, the implementation methods of the second shaft core 300 and the base 500, and the implementation methods of the support frame 400 and the base 500 can be referenced to each other as needed, and are not limited to the specific implementation methods of the first and fifth embodiments described above.

[0319] The rotating shaft device, electronic device, and housing provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and embodiments of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in specific embodiments and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A rotating shaft device having an open state and a closed state, characterized in that, The rotating shaft device includes: The base includes an arcuate groove; The support frame includes an arc-shaped sliding groove, and the support frame is rotatably connected to the base through the arc-shaped sliding groove so that the support frame can be opened or closed relative to the base. The rotation center of the support frame around the base is denoted as the virtual central axis. The first shaft core is fixed to the support frame; The second shaft core has a fixed protrusion at its end, the protrusion being inserted into the arc-shaped groove to allow the second shaft core to slide with the base. The first shaft core and the second shaft core are parallel to the virtual central axis. The rotating shaft device is used to position the first shaft core between the second shaft core and the virtual central axis in the first direction when the closed state is in the first direction. A first bushing assembly has a first end fitted onto the first shaft core and rotatable relative to the first shaft core, and a second end fitted onto the second shaft core and rotatable relative to the second shaft core. The two ends of the first bushing assembly respectively interfere with the first shaft core and the second shaft core, so that during the switching process between the open state and the closed state of the rotating shaft device, the first bushing assembly, the first shaft core, and the second shaft core are used to provide torque to the rotating shaft device.

2. The rotating shaft device according to claim 1, characterized in that, The rotating shaft device includes two sliders, and the two sliders are provided with protrusions at their opposite ends along the second direction. The two sliders are fixedly connected to the two ends of the second shaft core at their opposite ends along the second direction, and the second direction is parallel to the axis of the second shaft core.

3. The rotating shaft device according to claim 1, characterized in that, The first bushing assembly includes a first bushing and a second bushing that are fixed to each other. The first bushing is sleeved on the first shaft core and can rotate relative to the first shaft core and interfere with the first shaft core. The second bushing is sleeved on the second shaft core and can rotate relative to the second shaft core and interfere with the second shaft core.

4. The rotating shaft device according to claim 3, characterized in that, The first bushing has a first opening penetrating through the inner and outer surfaces of the first bushing, and the first opening extends axially along the first bushing; and / or The second bushing is provided with a second opening that penetrates the inner and outer surfaces of the second bushing, and the second opening extends along the axial direction of the second bushing.

5. The rotating shaft device according to claim 4, characterized in that, The inner surface of the first bushing has a first bushing planar portion, and the outer surface of the first shaft core has a first shaft core planar portion parallel to the bushing planar portion. In the closed state, the first bushing planar portion and the first shaft core planar portion are arranged opposite to each other; and / or The inner surface of the first bushing has a first bushing planar portion, and the outer surface of the first shaft core is also provided with an opening and locking planar portion. In the closed state, the first bushing planar portion and the opening and locking planar portion are spaced apart. In the open state, the first bushing planar portion and the opening and locking planar portion are arranged opposite to each other.

6. The rotating shaft device according to any one of claims 1-5, characterized in that, The second shaft core interferes with the base, causing torque to be generated during the relative sliding process between the second shaft core core and the base.

7. The rotating shaft device according to any one of claims 1-5, characterized in that, The second shaft core slides relative to the base in an arcuate direction, the arcuate direction having a component along the first direction.

8. The rotating shaft device according to any one of claims 1-5, characterized in that, The rotating shaft device further includes two sliders, which are respectively fixed to both ends of the second shaft core along the second direction. The two sliders are provided with protrusions at opposite ends along the second direction. The base includes two support plates arranged and spaced apart along the second direction. The two sliders and the second shaft core are located between the two support plates along the second direction. The two support plates are provided with arc-shaped grooves on their opposite end faces along the second direction. The second direction is parallel to the axis of the second shaft core.

9. The rotating shaft device according to claim 8, characterized in that, The support frame is located between the two support plates. The support frame has arc-shaped grooves at both ends along the second direction. The support plates have second rotating members on their opposite end faces along the second direction. The arc-shaped grooves and the second rotating members cooperate to enable the support frame to rotate relative to the base.

10. The rotating shaft device according to claim 9, characterized in that, The second rotating member further includes a stop portion protruding toward the arc-shaped groove. The stop portion is located at one end of the second rotating member along the first direction. When the arc-shaped groove rotates relative to the second rotating member to the stop portion, the arc-shaped groove stops rotating.

11. The rotating shaft device according to claim 8, characterized in that, Each of the support plates includes a first connector and a second connector extending along the second direction, the two first connectors of the two support plates being fixed by screws, and the two second connectors of the two support plates being fixed by screws; wherein, the arcuate groove is located between the first connector and the second connector along the first direction, and the middle part of the first bushing assembly is located below the two second connectors.

12. The rotating shaft device according to any one of claims 1-5, characterized in that, The arc-shaped groove of the support frame and the base interfere with each other, causing torque to be generated during the relative rotation of the support frame and the base.

13. The rotating shaft device according to any one of claims 1-5, characterized in that, The interference fit between the protrusion and the arc-shaped groove causes torque to be generated between the second shaft core and the base during relative rotation.

14. The rotating shaft device according to any one of claims 1-5, characterized in that, The support has a receiving opening facing the first bushing assembly, the first end of the first bushing assembly is located in the receiving opening, and the second shaft core is fixedly connected to the side wall of the receiving opening to fix the second shaft core to the support.

15. A rotating shaft device, characterized in that, The rotating shaft device has an open state and a closed state, characterized in that it comprises: The base includes an arcuate groove; The support frame includes an arc-shaped sliding groove, and the support frame is rotatably connected to the base through the arc-shaped sliding groove so that the support frame can be opened or closed relative to the base. The rotation center of the support frame around the base is denoted as the virtual central axis. The first shaft core is fixed to the support frame; The second shaft core has a fixed protrusion at its end, the protrusion being inserted into the arc-shaped groove to allow the second shaft core to slide with the base. The first shaft core and the second shaft core are parallel to the virtual central axis. The rotating shaft device is used to position the first shaft core between the second shaft core and the virtual central axis in the first direction when the closed state is in the first direction. A first bushing assembly, wherein a first end of the first bushing assembly is sleeved on the first shaft core and is rotatable relative to the first shaft core, and a second end of the first bushing assembly is sleeved on the second shaft core and is rotatable relative to the second shaft core; The first end of the first bushing assembly has an interference fit with the first shaft core, and at least one interference fit exists between the second end of the first bushing assembly and the second shaft core, between the second shaft core and the base, or between the support frame and the base, so that the rotating shaft device provides torque at the location of the interference fit during the switching between the open state and the closed state.

16. An electronic device, characterized in that, The device includes a body, a support member, and a rotating shaft device as described in any one of claims 1-15, wherein the rotating shaft device is located between the body and the support member, the bracket in the rotating shaft device is fixedly connected to the support member, and the base in the rotating shaft device is fixedly connected to the body. When the rotating shaft device is in the open state, the support member is opened relative to the device body via the rotating shaft device, and the support member is used to support the device body.

17. A housing, characterized in that, The housing includes a housing body, a support member, and a rotating shaft device as described in any one of claims 1-15. The rotating shaft device is located between the housing body and the support member. The bracket in the rotating shaft device is fixedly connected to the support member, and the base in the rotating shaft device is fixedly connected to the housing body. When the rotating shaft device is in the open state, the support member is opened relative to the housing body via the rotating shaft device.

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