Rotating shaft structure and folding screen terminal

Abstract

The embodiment of the utility model provides a rotating shaft structure and a folding screen terminal, and relates to the technical field of electronic equipment. According to the rotating shaft structure, under the condition that the thickness of the rotating shaft structure is not increased, the mechanical strength of the rotating shaft structure is improved, the anti-falling capacity of the rotating shaft structure is improved, and the reliability of the rotating shaft structure is improved. The rotating shaft structure comprises a shaft cover; a middle door plate; the plurality of swing arm modules are arranged between the shaft cover and the middle door plate; the damping mechanism is arranged between the two adjacent swing arm modules and is used for connecting the two adjacent swing arm modules; and the support comprises a support body, the support body is arranged in a gap formed by matching of the shaft cover and the damping mechanism, and the support is used for fixedly connecting the two adjacent swing arm modules.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a hinge structure and a folding screen terminal. Background Art

[0002] With the development of technology, foldable screen electronic devices are becoming more and more popular due to their advantages of being easy to carry and having large screen sizes. In order to facilitate carrying, foldable screen electronic devices are further developing in the direction of being thinner.

[0003] However, as foldable electronic devices are becoming thinner, the size of the hinges in the devices has been reduced, and the rigidity of the hinges has become worse. This makes the device less resistant to drops and unable to cope with the inevitable drops that occur during daily use. Utility Model Content

[0004] In order to solve the above technical problems, the present application provides a shaft structure, which can improve the mechanical strength of the shaft structure without increasing the thickness of the shaft structure, thereby improving the anti-drop ability of the shaft structure and improving the reliability of the shaft structure.

[0005] In the first aspect, an embodiment of the present application provides a rotating shaft structure, including: a shaft cover; a middle door panel; a plurality of swing arm modules, wherein the plurality of folding screen swing arm modules are arranged between the folding screen shaft cover and the folding screen middle door panel; a damping mechanism, wherein the folding screen damping mechanism is arranged between two adjacent folding screen swing arm modules and connects the two adjacent folding screen swing arm modules; a bracket, wherein the folding screen bracket includes a bracket body, wherein the folding screen bracket body is arranged in a gap formed by the cooperation of the folding screen shaft cover and the folding screen damping mechanism, and the folding screen bracket is used to fix and connect two adjacent folding screen swing arm modules.

[0006] By adding a bracket in the gap naturally formed by the cooperation between the shaft cover and the damping mechanism, the mechanical strength of the shaft structure can be increased without increasing the thickness of the shaft structure, and the anti-drop performance of the shaft structure can be improved.

[0007] In some possible implementations, the folding screen damping mechanism includes two damping subunits, each of which includes a spring shaft, a spring, and a cam group. The folding screen spring shaft runs through the folding screen spring and the folding screen cam group, and the two ends of the folding screen spring shaft are respectively connected to two adjacent folding screen swing arm modules. This solution has a simple structure, low assembly difficulty, and is easy to implement.

[0008] In some possible implementations, the folding screen bracket further includes two damping subunit limiting parts fixed to the folding screen bracket body and arranged opposite to each other, the two sides of the two folding screen damping subunit limiting parts are respectively provided with a first folding screen damping mechanism and a second folding screen damping mechanism, the first folding screen damping mechanism and the second folding screen damping mechanism share a folding screen spring shaft, the folding screen damping subunit limiting part is provided with a through hole, and the folding screen spring shaft passes through the through hole of the folding screen damping subunit limiting part. The damping subunit limiting part can limit the damping subunits on both sides of the damping subunit limiting part from sliding on the spring shaft, thereby playing the role of fixing the damping subunit.

[0009] In some possible implementations, the folding screen cam groups of the first folding screen damping mechanism and the second folding screen damping mechanism both include a first cam, the first folding screen cam is provided with a protrusion, and the folding screen damping subunit limiting portion also includes two first cam rotation limiting sub-portions, and the first folding screen cam rotation limiting sub-portions can cooperate with the folding screen protrusion to block the rotation of the first folding screen cam at least at a partial angle. By utilizing the blocking effect of the first cam rotation limiting sub-portion on the first cam, the unfolding angle of the rotating shaft structure can be limited according to actual needs. For example, by adjusting the position of the first cam rotation limiting sub-portion, the rotating shaft structure can be restricted from further unfolding when it is unfolded to a flattened state, thereby protecting some components of the terminal from damage caused by excessive unfolding.

[0010] In some possible implementations, a first groove is provided on one side of the folding screen bracket close to the folding screen shaft cover, the folding screen shaft cover includes a first reinforcing rib, and the first groove of the folding screen can accommodate the first reinforcing rib of the folding screen. The first reinforcing rib can strengthen the mechanical strength of the shaft cover and enhance the anti-drop performance of the shaft cover.

[0011] In some possible implementations, the cross section of the first groove of the folding screen is cut along a plane perpendicular to the extension direction of the folding screen bracket, and the cross section of the first groove of the folding screen is a horizontally placed C-shape. The cross section of the horizontally placed C-shaped first groove forms an avoidance space of a corresponding shape, laying a foundation for forming a first reinforcing rib of a complementary shape.

[0012] In some possible implementations, the first reinforcing rib and the first groove are complementary in shape. Such an arrangement can maximize the volume of the first reinforcing rib and further enhance the mechanical strength of the shaft cover.

[0013] In some possible implementations, a second groove is provided on one side of the bracket close to the middle door panel, the middle door panel includes a second reinforcing rib, and the second groove can accommodate the second reinforcing rib. Two avoidance spaces are formed in the bracket cross section of the bracket, and the reinforcing rib can be placed in the avoidance spaces, thereby laying a foundation for the mechanical strength of the lifting shaft cover and the middle door panel.

[0014] In some possible implementations, when a cross section of the bracket is cut along a plane perpendicular to the extension direction of the bracket, the cross section of the bracket is a transversely placed I-shaped cross section.

[0015] In some possible implementations, the second reinforcing rib is complementary in shape to the second groove.

[0016] In some possible implementations, two connecting ends are provided at both ends of the extension direction of the folding screen bracket, and the folding screen connecting ends are used to be fixedly connected to the folding screen swing arm module.

[0017] In some possible implementations, a buffer portion is further included, and the folding screen buffer portion is arranged between the folding screen middle door plate and the folding screen bracket. The buffer portion plays a role in absorbing and transmitting impact force, and avoids damage to the shaft cover and the bracket due to impact within a certain limit.

[0018] In some possible implementations, the folding screen buffer includes a rubber pad or a silicone pad. The rubber pad and the silicone pad have a good effect of absorbing impact energy, and can reduce the probability of damage to the shaft cover and the bracket due to impact.

[0019] In a second aspect, an embodiment of the present application provides a folding screen terminal, comprising any one of the above-mentioned hinge structures, having the beneficial effects of the corresponding hinge structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of a foldable terminal provided in an embodiment of the present application;

[0021] Figure 2 A schematic diagram of the structure of another foldable terminal provided in an embodiment of the present application;

[0022] Figure 3 A side view of a foldable terminal provided by an embodiment of the present application;

[0023] Figure 4 A schematic structural diagram of a rotating shaft structure without a shaft cover provided in an embodiment of the present application;

[0024] Figure 5 A schematic diagram of the inner structure of a shaft cover provided in an embodiment of the present application;

[0025] Figure 6 for Figure 4 A magnified image of area A;

[0026] Figure 7 for Figure 4 Enlarged view of area B;

[0027] Figure 8 A schematic diagram of the structure of a bracket provided in an embodiment of the present application;

[0028] Fig. 9 A schematic cross-sectional view of a stent body taken along the CC' direction provided in an embodiment of the present application;

[0029] Fig.10 A partial cross-sectional schematic diagram of a foldable terminal provided by an embodiment of the present application;

[0030] Fig.11 A partial cross-sectional schematic diagram of a rotating shaft structure provided in an embodiment of the present application;

[0031] Fig.12 A partial cross-sectional schematic diagram of another foldable terminal provided by an embodiment of the present application. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0033] The term "and / or" in this article is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0034] The words "upper", "lower", "left", "right" and the like used herein to indicate directions are only used to clearly explain the embodiments, thereby describing a possible arrangement or arrangement form of each component. They are not intended to limit the relationship between components or the arrangement direction.

[0035] The terms "first" and "second" in the description and claims of the embodiments of the present application are used to distinguish different objects rather than to describe a specific order of objects. For example, a first target object and a second target object are used to distinguish different target objects rather than to describe a specific order of target objects.

[0036] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0037] In the description of the embodiments of the present application, unless otherwise specified, the meaning of "multiple" refers to two or more than two. For example, multiple processing units refer to two or more processing units; multiple systems refer to two or more systems.

[0038] The embodiment of the present application provides a foldable terminal, which can be a mobile phone, a tablet computer, a personal digital assistant (PDA), a car computer, a television, a smart wearable device, a smart home device, etc. The embodiment of the present application does not specifically limit the specific form of the above foldable terminal. For the convenience of description, the following description is taken as an example that the foldable terminal is a foldable mobile phone.

[0039] See also Figure 1 , Figure 1 This is a schematic diagram of the structure of a foldable terminal provided in an embodiment of the present application. Figure 1 As shown, the foldable mobile phone 100 includes a first display unit (also called a foldable screen or a flexible screen) 10 .

[0040] The first display unit 10 is, for example, a flexible display screen. The first display unit 10 includes, for example, an organic light emitting diode (OLED) display screen. The OLED display screen does not require a backlight module, and the substrate substrate in the OLED display screen can, for example, be made of a flexible resin material, such as polyethylene terephthalate (PET), so that the OLED display screen has a bendable property. Of course, the type of the first display unit 10 includes but is not limited to an OLED display screen, as long as the display screen can be bent, it is within the protection scope of the present application, for example, it can also be a liquid crystal display (LCD) screen, an LED display screen (for example, including a Micro-LED display screen, a Mini-LED display screen), etc.

[0041] It should be noted that, in order to facilitate the clear description of the subsequent structural features and the positional relationship of the structural features, the positional relationship of the structures in the foldable mobile phone 100 is defined by the X-axis direction, the Y-axis direction and the Z-axis direction. Among them, the X-axis direction (also called the second direction) is the width direction of the foldable mobile phone 100 after unfolding, the Y-axis direction (also called the first direction) is the length direction of the foldable mobile phone 100 after unfolding, and the Z-axis direction (also called the third direction) is the thickness direction of the foldable mobile phone 100 after unfolding.

[0042] Continue to see Figure 1, the foldable mobile phone 100 also includes a structural component. The structural component includes a first body 20, a second body 30 and a hinge structure 40. Along the X-axis direction, the first body 20 and the second body 30 are located on both sides of the hinge structure 40, and the hinge structure 40 is connected to the first body 20 and the second body 30 respectively. The first body 20, the hinge structure 40, and the second body 30 can be used to carry the first display unit 10. The first body 20 and the second body 30 can be rotated around the axis S0 of the hinge structure 40 respectively to realize the folding or unfolding state of the first display unit 10, that is, to realize the folding or unfolding state of the foldable mobile phone 100.

[0043] It should be noted that the foldable mobile phone 100 can be folded at multiple positions, and accordingly, the structural component may include multiple hinge structures 40 and multiple fuselages. For example, two hinge structures 40 and three fuselages may be included, and two adjacent fuselages are connected by a hinge structure 40, so that the foldable mobile phone 100 has two folding positions. It can be seen that the structural component includes at least one hinge structure 40 and at least two fuselages, and two adjacent fuselages are connected by a hinge structure 40. For the convenience of explanation, the embodiments of the present application are all described by taking the structural component including a hinge structure 40 and two fuselages (i.e., the first fuselage 20 and the second fuselage 30) as an example.

[0044] It should also be noted that Figure 1 The description is based on the example that the foldable mobile phone 100 is folded along the longitudinal direction (Y-axis direction, in which case the axis S0 is parallel to the Y-axis direction), that is, the foldable mobile phone 100 forms two left and right screens when folded, but does not constitute a limitation of the present application. In other optional embodiments of the present application, see Figure 2 , Figure 2 This is a schematic diagram of the structure of another foldable terminal provided in an embodiment of the present application. Figure 2 As shown, the foldable mobile phone 100 can also be folded in the horizontal direction (X-axis direction, in which case the axis S0 is parallel to the X-axis direction), that is, the foldable mobile phone 100 forms two upper and lower screens when folded. The following contents are all described by taking the foldable mobile phone 100 folded in the vertical direction as an example.

[0045] See also Figure 3 , Figure 3 A side view of a foldable terminal provided by an embodiment of the present application. Figure 3 As shown, the first body 20 includes a first housing 21 and a first middle frame 22. The second body 30 includes a second housing 31 and a second middle frame 32.

[0046] The first housing 21 can be the back cover (also called the battery cover) of the foldable mobile phone 100; it can also be a display unit for display, which is not limited in the embodiments of the present application. The second housing 31 can be the back cover (also called the battery cover) of the foldable mobile phone 100; it can also be a display unit for display, which is not limited in the embodiments of the present application. The embodiments of the present application are described by taking the first housing 21 as the back cover and the second housing 31 as the display unit (also called the second display unit or the external screen or the display screen, to distinguish the above-mentioned first display unit 10) as an example.

[0047] The second display unit 31 includes, for example, LCD display screen, OLED display screen, LED display screen and other types of display screens.

[0048] It should be noted here that in order to more clearly demonstrate the inventive point of this solution, Figure 3 Only structures related to the invention points are shown, not all structures.

[0049] The shaft structure 40 includes a shaft cover 41, a swing arm module 42, a damping mechanism 43, a first door panel 44, and a second door panel 45. The swing arm module 42 includes a swing arm of modular design, and the specific structure and function inside the swing arm module 42 can be determined according to actual needs. In the process of assembling the shaft structure 40, it is only necessary to connect the damping mechanism 43 between each swing arm module 42 to complete the general structure of the shaft structure 40, which greatly improves the difficulty of assembling the shaft structure 40 and improves the speed of assembling the shaft structure 40. Each swing arm module 42 is provided with two swing arms connected to the first door panel 44 and the second door panel 45 respectively. Through the cooperation of the two swing arms in the swing arm module 42, the first door panel 44 and the second door panel 45 are opened and closed. The swing arm close to the first door panel 44 can be called the first swing arm, and the swing arm close to the second door panel 45 can be called the second swing arm.

[0050] The damping mechanism 43 is arranged between two adjacent swing arm modules 42. The damping mechanism 43 is used to make the first door panel 44 and the second door panel 45 hover at a specific angle during the expansion and closing process of the first door panel 44 and the second door panel 45, and provide a boost when expanding and a damping force when closing within a preset angle range, or provide a damping force when expanding and a boost when closing within a preset angle range. The embodiment of the present application does not limit the specific structure of the damping mechanism 43. Any structure that meets the functional requirements of the above-mentioned damping structure can be used as a damping structure. Exemplarily, the damping mechanism 43 may include two damping subunits 431, each damping subunit 431 includes a spring shaft 4311, a spring 4312 and a cam group 4313, and the cam group 4313 includes a first cam 43131 and a second cam 43132 whose surfaces can be interlocked with each other, and the joint surface of the two cams is a wave shape, and the first cam 43131 and the second cam 43132 both include through holes. The spring shaft 4311 passes through the first cam 43131, the second cam 43132 and the spring 4312. The two ends of the spring shaft 4311 of one damping subunit 431 are respectively connected to the axes of the first swing arms of the two swing arm modules 42, and the two ends of the spring shaft 4311 of the other damping subunit 431 are respectively connected to the axes of the second swing arms of the two swing arm modules 42. Taking the damping subunit 431 connected to the axis of the first swing arm as an example, at least at certain angles, the first cam 43131 does not rotate, the rotation angle of the first cam 43131 is synchronized with the outer shell of the swing arm module 42, and the rotation angle of the second cam 43132 is synchronized with the first swing arm. When the joint surfaces of the first cam 43131 and the second cam 43132 just coincide with each other, the first cam 43131 and the second cam 43132 are most fully combined, the total length of the first cam 43131 and the second cam 43132 is the smallest, the compression degree of the spring 4312 is the smallest, the rotation angle between the first cam 43131 and the second cam 43132 is in the most stable state, and the first fuselage 20 connected to the first door panel 44 is in a hovering angle. When the joint surfaces of the first cam 43131 and the second cam 43132 are not completely matched, the total length of the first cam 43131 and the second cam 43132 does not reach the minimum length, and the spring 4312 presses the first cam 43131 and the second cam 43132, so that the rotation angles of the first cam 43131 and the second cam 43132 have a tendency to change, and the second cam 43132 transmits the torque to the first fuselage 20 through the first door panel 44 and other components. Therefore, according to the direction of twisting, it is shown that the assist force is provided when unfolding and the damping force is provided when closing within the preset angle range, or the damping force is provided when unfolding and the assist force is provided when closing within the preset angle range. Thus, the corresponding function of the damping mechanism 43 is realized.

[0051] It is not difficult to find from the above description that in the above structure, only the spring shaft 4311 is connected between the swing arm modules 42, and there is no other rigid connection component. This design method has a disadvantage, that is, the shaft structure 40 is relatively fragile, and when the terminal falls, the shaft structure 40 may be damaged due to impact.

[0052] Based on this, an embodiment of the present application provides a rotating shaft structure 40 , which enhances the mechanical strength of the rotating shaft structure 40 within a limited space, thereby achieving the purpose of improving the anti-drop performance of the rotating shaft structure 40 .

[0053] The specific structure of the rotating shaft structure 40 provided in the embodiment of the present application is introduced below.

[0054] See also Figure 4 and Figure 5 , Figure 4 A schematic diagram of a rotating shaft structure without a shaft cover provided in an embodiment of the present application. Figure 5 This is a schematic diagram of the inner structure of a shaft cover provided in an embodiment of the present application. Figure 4 and Figure 5As shown, the shaft structure 40 includes a shaft cover 41, a swing arm module 42, a damping mechanism 43, a first door panel 44, a second door panel 45 and a middle door panel 46. For the convenience of production and assembly process, the swing arm of the shaft structure 40 is structurally designed, and the swing arm is encapsulated to form a swing arm module 42. The swing arm module 42 can be provided with a main swing arm, a secondary swing arm, a synchronous swing arm, etc., and can provide a certain damping. The specific structure and function of the swing arm module 42 can be determined according to actual needs. The first door panel 44 and the second door panel 45 are respectively located on both sides of the middle door panel 46, and the shaft cover 41 and the middle door panel 46 are surrounded to form an accommodating space. A plurality of swing arm modules 42 are arranged in the accommodating space, and a damping mechanism 43 is connected between adjacent swing arm modules 42. Each swing arm module 42 is provided with two swing arms connected to the first door panel 44 and the second door panel 45 respectively. The opening and closing between the first door panel 44 and the second door panel 45 are realized by the cooperation of the two swing arms in the swing arm module 42. The swing arm close to the first door panel 44 may be referred to as the first swing arm, and the swing arm close to the second door panel 45 may be referred to as the second swing arm. The damping mechanism 43 may include two damping subunits 431, each damping subunit 431 includes a spring shaft 4311, a spring 4312, and a cam group 4313, the cam group 4313 includes a first cam 43131 and a second cam 43132 whose surfaces can be mutually engaged, the engaging surface of the two cams is in a wave shape, and the first cam 43131 and the second cam 43132 both include through holes. The spring shaft 4311 penetrates the first cam 43131, the second cam 43132, and the spring 4312, and the two ends of the spring shaft 4311 of a damping subunit 431 are respectively connected to the axis of the first swing arms of the two swing arm modules 42, and the damping subunit 431 is close to the first door panel 44. The two ends of the spring shaft 4311 of the other damping subunit 431 are respectively connected to the axis of the second swing arms of the two swing arm modules 42, and the damping subunit 431 is close to the second door panel 45. At least at certain angles, the first cam 43131 does not rotate, that is, the rotation angle of the first cam 43131 is synchronized with the housing of the swing arm module 42, and the second cam 43132 rotates synchronously with its corresponding swing arm.

[0055] See also Figure 6 , Figure 6 for Figure 4 A magnified view of area A. Figure 6As shown, the shaft structure 40 also includes a bracket 47, and the bracket 47 is arranged in the gap formed by the two damping sub-units 431 and the shaft cover 41. The bracket 47 includes a bracket body 471, and two connecting ends are arranged at both ends of the extension direction of the bracket body 471. The two connecting ends are used to fix the two swing arm modules 42 at both ends of the bracket 47. The connection method between the connecting end and the swing arm module 42 can be determined according to actual needs. For example, the connecting end and the swing arm module 42 can be connected by a snap buckle or by a screw hole. In the embodiment of the present application, the bracket 47 is installed on two adjacent swing arm modules 42. This design method effectively strengthens the connection rigidity between the swing arm modules 42 in the shaft structure 40 without increasing the thickness of the shaft structure 40, thereby improving the anti-drop performance of the shaft structure 40.

[0056] See also Figure 7 and Figure 8 , Figure 7 for Figure 4 The enlarged image of area B in the middle. Figure 8 This is a schematic diagram of the structure of a bracket provided in an embodiment of the present application. Figure 7 and Figure 8 As shown, in other embodiments, two damping mechanisms 43 arranged along the extension direction of the spring shaft 4311 may be provided between two adjacent swing arm modules 42, and the two damping mechanisms 43 share the spring shaft 4311. The bracket 47 also includes two damping subunit limiting parts 472 arranged opposite to each other, and the damping subunit limiting parts 472 have through holes, so that the spring shaft 4311 of the damping subunit 431 can pass through the through holes, and the damping subunit limiting parts 472 can separate the springs 4312 and the cam groups 4313 of the two damping subunits 431, so that the springs 4312 and the cam groups 4313 are provided on both sides of the damping subunit limiting parts 472. On the one hand, the damping subunit limiting parts 472 play a role in limiting the displacement of the springs 4312 and the cam groups 4313 of the damping subunit 431 along the axial direction of the spring shaft 4311. On the other hand, the damping subunit limiting parts 472 enhance the strength of the bracket 47 and improve the impact resistance of the bracket 47.

[0057] Continue to see Figure 7 and Figure 8In some other embodiments, the damping subunit limiting portion 472 further includes two first cam rotation limiting subunits 4721, the first cam rotation limiting subunits 4721 are located at the edge of the damping subunit limiting portion 472, and the spring 4312 adjacent to the damping subunit limiting portion 472 and the first cam 43131 in the cam group 4313 are arranged close to the first cam rotation limiting subunit 4721. The first cam rotation limiting subunit 4721 can cooperate with the protrusion 431311 of the first cam 43131, so that when the first cam 43131 rotates to a certain angle, the first cam rotation limiting subunit 4721 blocks the first cam 43131 from continuing to rotate, thereby achieving the effect of limiting the rotation angle of the first cam 43131. The advantage of such a setting is that when the folding screen mobile phone is unfolded from the folded state to the flattened state, the first cam rotation limiting subunit 4721 can prevent the first cam 43131 from continuing to rotate, thereby preventing the unfolding angle of the folding screen mobile phone from being too large and damaging the components inside the mobile phone. In actual implementation, appropriate adjustments can be made without violating the main purpose of the present invention, such as only providing one damping subunit limiting portion 472 , or providing only one first cam rotation limiting subunit 4721 on the damping subunit limiting portion 472 .

[0058] When the terminal falls, if the shaft structure 40 is impacted, the first part of the shaft structure 40 to be impacted is necessarily the shaft cover 41 at the outermost side. Strengthening the mechanical strength of the shaft cover 41 allows the shaft structure 40 to absorb the impact energy first when it is impacted, thereby protecting the shaft structure 40 from damage.

[0059] Continue to see Figure 7 and Figure 8 Based on this, in some other embodiments, a first groove 473 is provided on one side of the bracket 47 close to the shaft cover 41, and the shape of the first groove 473 can be determined according to actual needs. Fig. 9 , Fig. 9 This is a schematic cross-sectional view of a stent body taken along the CC' direction provided in an embodiment of the present application. Fig. 9 As shown, for example, when a cross section of the first groove is cut along a plane perpendicular to the extension direction of the bracket 47, the cross section of the first groove may be a C-shaped shape placed laterally. Fig.10 , Fig.10 A partial cross-sectional schematic diagram of a foldable terminal provided in an embodiment of the present application. Fig.10 The cross section in is perpendicular to the extension direction of the shaft structure 40, such as Fig.10As shown, the shaft cover 41 is provided with a protruding first reinforcing rib 411 at a position corresponding to the first groove 473, and the first groove 473 can accommodate the first reinforcing rib 411. The first reinforcing rib 411 can strengthen the mechanical strength of the shaft cover 41 and enhance the anti-drop performance of the shaft cover 41. The position of the first groove 473 can be set in the middle of the surface of the side of the bracket 47 close to the shaft cover 41. Such a setting method avoids the mechanical strength of the bracket 47 being reduced due to the existence of the first groove 473 as much as possible. This is because, when subjected to external forces such as bending force, the material at the center of the bracket 47 hardly resists the bending force, and has no significant benefit to the anti-bending and anti-drop performance of the bracket 47. The space left by the first groove 473 of the bracket 47 can accommodate the first reinforcing rib 411. Such a design method can increase the strength of the shaft structure 40 under the weight and volume of the original shaft structure 40. The terminal using such a shaft structure 40 not only ensures that the terminal has a light and thin design, but also has a high anti-drop performance. In addition, the shape of the first reinforcing rib 411 can be matched with the shape of the first groove 473, that is, the shapes of the first reinforcing rib 411 and the first groove 473 are complementary. In this way, the volume of the first reinforcing rib 411 can be increased as much as possible, and the reinforcing capacity of the first reinforcing rib 411 can be improved.

[0060] In other embodiments, a second groove 474 is provided on one side of the bracket 47 close to the middle door panel 46, and the shape of the second groove 474 can be determined according to actual needs. The middle door panel 46 includes a second reinforcing rib 461, and the position of the second reinforcing rib 461 is corresponding to the second groove 474, and the second groove can accommodate the second reinforcing rib. Fig.11 , Fig.11 This is a partial cross-sectional schematic diagram of a rotating shaft structure provided in an embodiment of the present application. Fig.11 As shown, the bracket 47 can include a first groove 473 and a second groove 474 at the same time, the first reinforcing rib 411 is complementary in shape to the first groove 473, the second reinforcing rib 461 is complementary in shape to the second groove 474, and the cross section of the bracket is cut along a plane perpendicular to the extension direction of the bracket, and the cross section of the bracket presents a horizontally placed I-shaped (i.e., H-shaped). Such a setting can simultaneously strengthen the strength of the shaft cover 41 and the middle door plate 46, and further improve the anti-drop performance of the rotating shaft structure 40.

[0061] In actual implementation, according to actual needs, some of the brackets 47 may be selected to be provided with the first groove 473, or the first groove 473 may be provided on all the brackets 47, and the first reinforcing rib 411 corresponding to the position of the first groove 473 may be provided on the shaft cover 41. Some of the brackets 47 may be selected to be provided with the second groove 474, or the second groove 474 may be provided on all the brackets 47, and the second reinforcing rib 461 corresponding to the position of the second groove 474 may be provided on the middle door panel 46.

[0062] In the drop resistance test, it was found that due to the gap between the middle door plate 46 and the bracket 47, when the terminal falls and is impacted, the middle door plate 46 on the inner side of the terminal in the rotating shaft structure 40 does not absorb the impact force, and only the shaft cover 41 and the bracket 47 absorb the impact force, resulting in the shaft cover 41 and the bracket 47 on the outer side. Fig.12 , Fig.12 A partial cross-sectional schematic diagram of a foldable terminal provided in an embodiment of the present application. Fig.12 The cross section in is perpendicular to the extension direction of the shaft structure 40, such as Fig.12 As shown, based on the above problems, in other embodiments, the rotating shaft structure 40 further includes a buffer portion 48 disposed between the middle door plate 46 and the bracket 47. The buffer portion 48 may be a flexible component, such as a rubber pad or a silicone pad. The buffer portion 48 conducts and absorbs the impact energy from the bracket 47, thereby reducing the impact energy absorbed by the bracket 47 and the shaft cover 41 and other components, avoiding damage to the bracket 47 and the shaft cover 41 and other components due to impact, thereby improving the anti-drop performance and reliability of the rotating shaft structure 40.

[0063] In addition, according to actual needs, high-strength materials can be selected to make parts with high rigidity requirements, and high-elasticity or soft materials can be selected to make parts with high energy absorption requirements. For example, when high rigidity requirements are placed on the bracket 47, high-strength steel can be selected as the bracket material. When high energy absorption requirements are placed on the bracket 47, plastic can be selected as the bracket material.

[0064] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A rotating shaft structure, characterized in that: include: Shaft cover; Middle door panel; A plurality of swing arm modules, wherein the plurality of swing arm modules are arranged between the shaft cover and the middle door panel; A damping mechanism, wherein the damping mechanism is disposed between two adjacent swing arm modules and connects the two adjacent swing arm modules; The bracket comprises a bracket body, the bracket body is arranged in a gap formed by the cooperation between the shaft cover and the damping mechanism, and the bracket is used to fix and connect two adjacent swing arm modules.

2. The rotating shaft structure according to claim 1, characterized in that: The damping mechanism includes two damping subunits, each of which includes a spring shaft, a spring and a cam group. The spring shaft runs through the spring and the cam group, and two ends of the spring shaft are respectively connected to two adjacent swing arm modules.

3. The rotating shaft structure according to claim 2, characterized in that: The bracket also includes two damping subunit limiting parts fixed to the bracket body and arranged opposite to each other, the first damping mechanism and the second damping mechanism are respectively provided on both sides of the two damping subunit limiting parts, the first damping mechanism and the second damping mechanism share the spring shaft, the damping subunit limiting part is provided with a through hole, and the spring shaft passes through the through hole of the damping subunit limiting part.

4. The rotating shaft structure according to claim 3, characterized in that: The cam groups of the first damping mechanism and the second damping mechanism both include a first cam, the first cam is provided with a protrusion, and the damping subunit limiting portion also includes two first cam rotation limiting sub-portions, the first cam rotation limiting sub-portions can cooperate with the protrusion to block the rotation of the first cam at at least a partial angle.

5. The rotating shaft structure according to claim 1, characterized in that: A first groove is provided on one side of the bracket close to the shaft cover. The shaft cover includes a first reinforcing rib. The first groove can accommodate the first reinforcing rib.

6. The rotating shaft structure according to claim 5, characterized in that: A cross section of the first groove is cut along a plane perpendicular to the extension direction of the bracket, and the cross section of the first groove is a transversely placed C-shape.

7. The rotating shaft structure according to claim 5, characterized in that: The first reinforcing rib is complementary in shape to the first groove.

8. The rotating shaft structure according to claim 5, characterized in that: A second groove is provided on one side of the bracket close to the middle door panel, the middle door panel includes a second reinforcing rib, and the second groove can accommodate the second reinforcing rib.

9. The rotating shaft structure according to claim 8, characterized in that: The cross section of the bracket is cut along a plane perpendicular to the extension direction of the bracket, and the cross section of the bracket is a horizontally placed I-shape.

10. The rotating shaft structure according to claim 8, characterized in that: The second reinforcing rib is complementary in shape to the second groove.

11. The rotating shaft structure according to claim 1, characterized in that: Two connecting ends are provided at both ends of the bracket in the extension direction, and the connecting ends are used to be fixedly connected to the swing arm module.

12. The rotating shaft structure according to claim 1, characterized in that: A buffer portion is also included, and the buffer portion is arranged between the middle door panel and the bracket.

13. The rotating shaft structure according to claim 12, characterized in that: The buffer portion includes a rubber pad or a silicone pad.

14. A folding screen terminal, characterized in that: It comprises the rotating shaft structure as described in any one of claims 1 to 13.

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