Rotating shaft assembly and electronic equipment

Abstract

The invention provides a rotating shaft assembly and electronic equipment, the rotating shaft assembly comprises a shaft cover and a supporting plate, the supporting plate is fixedly connected with the shaft cover, the supporting plate comprises at least two supporting pieces, the supporting pieces are arranged in a split mode and are arranged in the length direction of the rotating shaft assembly, one of the two adjacent supporting pieces is provided with a connecting male head, and the other of the two adjacent supporting pieces is provided with a connecting female head; and the other one is provided with a connecting female seat, and the connecting female seat is matched with the connecting male head so as to connect two adjacent supporting pieces. By means of the design, the strength and rigidity of the structure of the supporting plate can be improved, the possibility that the supporting plate deforms or breaks when falling or being impacted is reduced, the reliability of the whole rotating shaft assembly can be improved, and the light and thin design of the rotating shaft assembly can be achieved. Meanwhile, the supporting force of the supporting plate on the flexible display screen is increased, the possibility that the flexible display screen sinks after being pressed is reduced, and the situations that the flexible display screen is folded and damaged or even fails after falling or being impacted are reduced.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a shaft assembly and electronic equipment. Background Art

[0002] With the development of science and technology, the application of foldable terminal products is becoming more and more extensive. The hinge assembly is the core component of foldable terminal products. The support plate in the hinge assembly can support the flexible display screen. The current support plate itself has low strength and limited support for the flexible display screen, which not only affects the reliability of the entire hinge assembly, but also affects the user experience. Summary of the invention

[0003] The purpose of the present application is to provide a hinge assembly and an electronic device to solve the problem in the above-mentioned prior art that the support plate itself has low strength and provides low supporting force for the flexible display screen.

[0004] A first aspect of the present application provides a rotating shaft assembly, comprising a shaft cover and a support plate, wherein the support plate is fixedly connected to the shaft cover, wherein the support plate comprises at least two support members, the support members are separately arranged and arranged along the length direction of the rotating shaft assembly, and among two adjacent support members, one is provided with a connecting male head and the other is provided with a connecting female seat, and the connecting female seat cooperates with the connecting male head to connect the two adjacent support members.

[0005] In the present application, the support plate is composed of a plurality of support members, wherein adjacent support members are connected by connecting male connectors and connecting female connectors to realize an integrated design of the support plate, which is conducive to improving the strength and rigidity of the support plate structure itself, and reducing the possibility of deformation or breakage of the support plate when it falls or is impacted, thereby improving the reliability of the entire shaft assembly, and realizing a thin and light design of the shaft assembly. At the same time, the integrated design of the support plate is also conducive to increasing the support area of ​​the support plate for the flexible display screen, increasing the support force of the support plate for the flexible display screen, and improving the support effect of the support plate for the flexible display screen, thereby reducing the possibility of the flexible display screen sinking after being pressed, and reducing the possibility of creases on the flexible display screen, and damage or even failure after falling or being impacted.

[0006] In a possible implementation manner, the female connection seat is provided with a receiving groove along the thickness direction of the shaft assembly, and the male connection head includes a male head body, and at least a portion of the male head body is received in the receiving groove.

[0007] Among them, the accommodating groove can play the role of accommodating and limiting the male head body. Through the cooperation between the male head body and the accommodating groove, it is beneficial to improve the stability and reliability of the connection between the connecting female seat and the connecting male head, thereby facilitating the realization of a stable and reliable connection between the two supporting parts, and further facilitating the improvement of the reliability of the entire shaft assembly.

[0008] In a possible embodiment, a snap-fit ​​groove is provided on the side wall of the accommodating groove along the length direction of the rotating shaft assembly, the snap-fit ​​groove is opened along the thickness direction of the rotating shaft assembly and is connected to the accommodating groove, and a snap-fit ​​portion is provided on one side of the male head body, and the snap-fit ​​portion is located in the snap-fit ​​groove.

[0009] By providing the engaging portion and the engaging groove, the stability of the connection between the male connector and the female connector is further improved, and the possibility of the male connector body escaping from the accommodating groove is reduced.

[0010] In a possible embodiment, along the thickness direction of the shaft assembly, the bottom wall of the accommodating groove is provided with at least one first mounting hole, and the male head body is provided with at least one second mounting hole, and the first mounting hole and the second mounting hole are used to cooperate with the first fastener.

[0011] This connection method has high reliability and reduces the possibility of loosening of the male connector and the female connector under external force impact, which may lead to failure of the cooperation between the two. This is beneficial to improving the stability and reliability of the connection between the male connector and the female connector, thereby helping to improve the stability of the entire support plate structure. Through the stable connection between the support parts, the structural strength of the support plate itself is improved, and the possibility of deformation or breakage of the support plate is reduced.

[0012] In a possible embodiment, the connecting female seat is provided with a positioning piece, and the positioning piece is located on at least one side of the accommodating groove along the width direction of the rotating shaft assembly, and the positioning piece extends along the thickness direction of the rotating shaft assembly toward a side away from the accommodating groove; the connecting male head is provided with a positioning hole, and the positioning hole is located on at least one side of the male head body along the width direction of the rotating shaft assembly, and the positioning piece is used to cooperate with the corresponding positioning hole.

[0013] This design is conducive to improving the accuracy of the matching between the female connector and the male connector, that is, the male connector body can be accurately inserted into the receiving groove, thereby improving the assembly efficiency between the two support members. At the same time, this design also reduces the possibility of shaking between the male connector and the female connector, further improving the stability of the connection between the two.

[0014] In a possible embodiment, the accommodating groove is provided with abutment portions on both sides along the width direction of the rotating shaft assembly, the abutment portions are connected to the side walls of the accommodating groove, and the positioning piece is provided on the abutment portions; the male head body is provided with a mating portion on one side along the length direction of the rotating shaft assembly, the mating portion is connected to the male head body, the positioning hole is opened in the mating portion, and along the thickness direction of the rotating shaft assembly, the bottom wall of the mating portion abuts against the top wall of the abutment portion.

[0015] This arrangement is beneficial to increasing the contact area between the female connection seat and the male connection head, which is beneficial to improving the stability and reliability of the fit between the male connection head and the female connection seat. At the same time, it also plays a limiting role on the male connection head and the female connection seat, reducing the possibility of shaking between the two along the thickness direction of the shaft assembly.

[0016] In a possible embodiment, the accommodating groove is further provided with extension portions on both sides along the width direction of the rotating shaft assembly, the extension portion is located on one side of the abutting portion and is connected to the abutting portion, the extension portion extends along the thickness direction of the rotating shaft assembly toward the side away from the accommodating groove, and along the length direction of the rotating shaft assembly, the side wall of the extension portion abuts against the side wall of the mating portion.

[0017] Through the abutment between the extension portion and the mating portion, the contact area between the connecting female socket and the connecting male head is further increased. At the same time, the possibility of sliding of the connecting male head and the connecting female socket along the length direction of the rotating shaft assembly is reduced, which is further beneficial to improving the stability of the connection between the two.

[0018] In a possible embodiment, a first joint portion is formed when the bottom wall of the mating portion abuts against the top wall of the abutting portion, and the connecting male head and the connecting female seat are welded through the first joint portion, and / or a second joint portion is formed when the side wall of the mating portion abuts against the side wall of the extending portion, and the connecting male head and the connecting female seat are welded through the second joint portion; and / or a third joint portion is formed when the side wall of the mating portion abuts against the side wall of the extending portion, and the connecting male head and the connecting female seat are welded through the third joint portion.

[0019] By welding the female connection seat and the male connection head together, the stability of the connection between the two is further improved, and the possibility of loosening between the female connection seat and the male connection head is reduced, which is beneficial to improving the stability of the overall structure of the support plate, thereby improving the strength and rigidity of the support plate.

[0020] In a possible implementation, an avoidance groove connected to the accommodating groove is provided between the extension portions on both sides of the accommodating groove, and the male head body has a protrusion, which is located in the avoidance groove and is used to cooperate with the avoidance groove.

[0021] The avoidance groove serves as an avoidance for the male body, thereby facilitating the male body to extend into the accommodating groove along the thickness direction of the shaft assembly, reducing the possibility of interference between the male body and the mating part, and the raised part of the male body can be snapped into the avoidance groove, further improving the reliability of the mating between the connecting female seat and the connecting male head.

[0022] In a possible embodiment, the rotating shaft assembly has a synchronous damping module, and among each of the supporting members, the supporting member connected to the synchronous damping module is a first supporting member, the first supporting member includes a main body, one end of the main body is connected to the connecting male head, and the synchronous damping module is arranged in the main body, wherein the synchronous damping module has an axis body, the first supporting member has a matching hole group, and the matching hole group includes at least a first matching hole and a second matching hole opened along the length direction of the rotating shaft assembly, the first matching hole and the second matching hole are located in the main body, along the length direction of the rotating shaft assembly, the first matching hole and the second matching hole are coaxial and spaced apart, and the axis body is used to pass through the first matching hole and the second matching hole to connect with the main body.

[0023] The first matching hole and the second matching hole support the shaft body, which is beneficial to improve the stability of the shaft body on the support plate and reduce the possibility of deformation of the shaft body after being subjected to force, which is beneficial to improve the working stability of the synchronous damping module. At the same time, the first matching hole and the second matching hole also limit the shaft body, so that the shaft body can be maintained in a fixed position on the support plate. By limiting the position of the shaft body, it is beneficial to limit the motion center of the synchronous damping module, and then it is beneficial to improve its motion accuracy, so as to improve the reliability of the entire rotating shaft assembly.

[0024] In a possible implementation, the mating hole group further includes a third mating hole, the third mating hole is opened in the connecting male head, the third mating hole is coaxially arranged with the first mating hole and the second mating hole, and the shaft is used to pass through the third mating hole.

[0025] Such a design is conducive to achieving multi-point support and multi-point limiting of the shaft, and is further conducive to improving the stability of the shaft when it is set on the support plate.

[0026] In a possible embodiment, the third mating hole is a non-complete circular hole structure, and the connecting female seat that cooperates with the connecting male head of the first support member is provided with a mating groove along the thickness direction of the rotating shaft assembly, and a part of the shaft body is accommodated between the third mating hole and the mating groove.

[0027] This design further improves the support and limiting effect on the shaft body, thereby improving the stability of the shaft body setting. Among them, since the matching groove also plays a receiving role for the shaft body, the possibility of interference between the shaft body and other components on the connecting female seat is reduced, thereby improving the stability and reliability of the connection between the connecting male head and the connecting female seat.

[0028] In a possible implementation, the synchronous damping module has two shafts, the two shafts are spaced apart along the width direction of the rotating shaft assembly, the first support member is provided with two matching hole groups, and the two shafts are used to pass through the corresponding matching hole groups.

[0029] Among them, the two shafts cooperate with the corresponding matching hole groups, which further improves the accuracy of the movement of the synchronous damping module.

[0030] In a possible embodiment, the rotating shaft assembly also has a first swing arm, which is rotatably connected to the main body; the synchronous damping module includes a synchronization module, which has a second swing arm, which is rotatably connected to the main body through the shaft, and the first swing arm and the second swing arm are arranged along the length direction of the rotating shaft assembly.

[0031] Among them, the first support member can integrate the first swing arm and the second swing arm at the same time, and the rotation centers of the first swing arm and the second swing arm are both restricted on the first support member. This design is conducive to improving the movement accuracy between the swing arms and further improving the reliability of the shaft assembly.

[0032] In a possible embodiment, the main body is provided with a stop portion, and the stop portion includes a first stop surface and a second stop surface, the first stop surface is connected to and intersects with the second stop surface, and the second swing arm has a first stop mating surface and a second stop mating surface, when the second swing arm rotates to a first preset position, the first stop surface can abut against the first stop mating surface, and when the second swing arm rotates to a second preset position, the second stop surface can abut against the second stop mating surface.

[0033] Such a design is conducive to achieving a stopping effect on the second swing arm, thereby limiting the rotation range of the second swing arm, and further conducive to improving the accuracy and stability of the movement of the second swing arm.

[0034] In a possible implementation manner, the shaft cover is bonded to the support plate, and / or the shaft cover is connected to the support plate via a second fastener.

[0035] By adopting the above connection method, it is helpful to improve the stability and reliability of the connection between the shaft cover and the support plate, and further help to improve the reliability of the entire shaft assembly.

[0036] In a possible embodiment, at least one limit member is provided on the side of the shaft cover facing the support plate, and the limit member extends along the thickness direction of the rotating shaft assembly toward the side close to the support plate. A limit hole is provided on the support member at the position corresponding to the limit member, and the limit hole is used to cooperate with the limit member.

[0037] Through the cooperation between the limiting piece and the limiting hole, the shaft cover and the support plate can be limited, which is beneficial to improve the accuracy of the assembly of the two, and at the same time it is also beneficial to improve the stability of the connection between the two and reduce the possibility of shaking between the shaft cover and the support plate.

[0038] In a possible embodiment, at least one anti-twist part is further provided on the side of the shaft cover facing the support plate, and the anti-twist part extends along the thickness direction of the rotating shaft assembly toward the side close to the support plate. The support part at the corresponding position of the anti-twist part is provided with an anti-twist hole, and the anti-twist hole is used to cooperate with the anti-twist part.

[0039] This design makes it possible for the anti-twist part to reduce the possibility of the shaft cover rotating relative to the support plate after it extends into the corresponding anti-twist hole, thereby helping to improve the accuracy and stability of the fit between the two. At the same time, the anti-twist part can also serve as a connecting rib for the shaft cover to improve the manufacturability of the shaft cover.

[0040] A second aspect of the present application provides an electronic device, comprising a flexible display screen and a hinge assembly, wherein the hinge assembly is the hinge assembly in any one of the above items, wherein the support plate is used to support the flexible display screen.

[0041] By adopting the above-mentioned hinge assembly, the reliability of the entire electronic device is improved, and the electronic device is designed to be thin and light. At the same time, since the hinge assembly has the above-mentioned technical effects, the electronic device having the hinge assembly also has the above-mentioned technical effects, which will not be repeated here.

[0042] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A schematic diagram of a rotating shaft assembly provided in an embodiment of the present application;

[0044] Figure 2 An exploded view of a shaft assembly provided in an embodiment of the present application;

[0045] Figure 3 A schematic diagram of a support plate provided in an embodiment of the present application;

[0046] Figure 4An exploded view of a support plate provided in an embodiment of the present application;

[0047] Figure 5 A schematic diagram of a first support member in a form of a support plate provided in an embodiment of the present application;

[0048] Figure 6 for Figure 5 A schematic diagram of the first support member in another viewing angle;

[0049] Figure 7 A schematic diagram of another form of a first support member in a support plate provided in an embodiment of the present application;

[0050] Figure 8 A cross-sectional view of a rotating shaft assembly provided in an embodiment of the present application;

[0051] Fig. 9 for Figure 3 Enlarged view of part II;

[0052] Fig.10 A schematic diagram of a first support member and a synchronous damping module provided in an embodiment of the present application;

[0053] Fig.11 A schematic diagram of a second support member in a support plate provided in an embodiment of the present application;

[0054] Fig.12 for Figure 2 A magnified view of part I;

[0055] Fig.13 A cross-sectional view of the main body of the first support member and the second swing arm in the support plate provided in an embodiment of the present application.

[0056] Reference numerals:

[0057] A-shaft assembly;

[0058] 1- shaft cover;

[0059] 11-limiting member;

[0060] 12- anti-twist piece;

[0061] 13- third mounting hole;

[0062] 2- Support plate;

[0063] 21- support member;

[0064] 22-connect the male connector;

[0065] 221-Male body;

[0066] 221a-second mounting hole;

[0067] 221b- raised portion;

[0068] 222-engaging part;

[0069] 223- positioning hole;

[0070] 224-cooperation part;

[0071] 23-Connect the female socket;

[0072] 231-accommodation tank;

[0073] 231a-first mounting hole;

[0074] 232-engagement slot;

[0075] 233- positioning piece;

[0076] 234-Butt;

[0077] 235- extension;

[0078] 236-avoidance slot;

[0079] 237-matching groove;

[0080] 24- first support member;

[0081] 241-Main body;

[0082] 242-matching hole group;

[0083] 242a-first matching hole;

[0084] 242b-second matching hole;

[0085] 242c-third matching hole;

[0086] 243- stop part;

[0087] 243a- first stop surface;

[0088] 243b- second stop surface;

[0089] 25-limiting hole;

[0090] 26- anti-twist hole;

[0091] 27- fourth mounting hole;

[0092] 28- second support member;

[0093] 29a-first joint;

[0094] 29b- second joint;

[0095] 29c-third joint;

[0096] 3- first fastener;

[0097] 4-Synchronous damping module;

[0098] 41- shaft body;

[0099] 42- Damping module;

[0100] 43-Synchronization module;

[0101] 431-second swing arm;

[0102] 431a-first stop mating surface;

[0103] 431b- second stop mating surface;

[0104] 5- second fastener;

[0105] 6-First swing arm;

[0106] 7-Chute.

[0107] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application. DETAILED DESCRIPTION

[0108] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0109] In the description of this application, unless otherwise clearly specified and limited, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance; unless otherwise specified or explained, the term "plurality" refers to two or more; the terms "connected" and "fixed" should be understood in a broad sense, for example, "connected" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0110] In the description of this specification, it should be understood that the directional words such as "upper" and "lower" described in the embodiments of the present application are described at the angles shown in the accompanying drawings and should not be understood as limiting the embodiments of the present application. In addition, in the context, it should also be understood that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element.

[0111] As flexible folding screen technology matures, the application of folding terminal products such as folding mobile phones, folding tablets, and folding computers is becoming more and more widespread. The hinge assembly is the core component of the folding terminal product, and the support plate in the hinge assembly can support the flexible display screen of the folding terminal product.

[0112] At present, the hinge assembly generally adopts a floating support plate, which can move up and down as the flexible folding screen is unfolded or folded. Due to the movable feature of this support plate, the support force it provides to the flexible display is limited. When users press the flexible display, they feel a more obvious collapse, which affects the user experience. At the same time, it will also cause the flexible display screen to be easily creased, and the flexible display screen is prone to damage or even failure when it falls or is impacted, and has a short service life. On the other hand, the current support plate itself has low strength and is prone to breakage or deformation, which reduces the reliability of the entire hinge assembly. In addition, due to its own strength, the support plate is difficult to achieve a lightweight design, which is not conducive to achieving a lightweight design of folding terminal products.

[0113] In view of this, in order to solve the above technical problems, Figures 1 to 4 As shown, an embodiment of the present application provides a rotating shaft assembly A, including a shaft cover 1 and a support plate 2, wherein the support plate 2 is fixedly connected to the shaft cover 1, wherein the support plate 2 includes at least two support members 21, the support members 21 are separately arranged and arranged along the length direction of the rotating shaft assembly A, and among two adjacent support members 21, one is provided with a connecting male head 22, and the other is provided with a connecting female seat 23, and the connecting female seat 23 cooperates with the connecting male head 22 to connect the two adjacent support members 21.

[0114] Along the thickness direction of the shaft assembly A, the shaft cover 1 is located on one side of the support plate 2 and is fixedly connected to the support plate 2. In the folding terminal product, the support plate 2 can support the flexible display screen. Different from the floating support plate in the prior art, the support plate 2 provided in the embodiment of the present application is a fixed support plate 2, which does not float up and down with the unfolding or folding of the flexible display screen. The support plate 2 has a splicing structure, which can be spliced ​​by two or more support members 21. Among them, adjacent support plates 2 are connected together by connecting male heads 22 and connecting female seats 23. The support plate 2 can have various forms, and the way of setting the connecting male head 22 and the connecting female seat 23 is different according to the different positions of the support members 21 on the support plate 2. Specifically, when both ends of a support member 21 need to be connected to other support members 21, the support member 21 can be provided with a connecting male head 22 at one end and a connecting female seat 23 at the other end, or both ends can be provided with connecting male heads 22, or both ends can be provided with connecting female seats 23; and when the support member 21 is located at the edge of the support plate 2, that is, only one end of the support member 21 needs to be connected to other support members 21, the support member 21 only needs to be provided with a connecting male head 22 at one end, or one end can be provided with a connecting female seat 23. After multiple support members 21 are spliced ​​together to form a completed support plate 2, the support plate 2 can be fixed to the shaft cover 1.

[0115] In the embodiment of the present application, the support plate 2 is composed of a plurality of support members 21, wherein adjacent support members 21 are connected by connecting male connectors 22 and female connectors 23, and such a design is conducive to realizing the integration of the support plate 2. The support plate in the prior art usually adopts a segmented design, that is, the support plate has a plurality of components, and each component is independently arranged, and each component is separately connected to the shaft cover. However, after the components of the support plate are connected to the shaft cover, the overall strength is low, resulting in low reliability of the shaft assembly, and there are gaps between the components, resulting in poor support effect on the flexible display screen. Compared with the prior art, the embodiment of the present application is conducive to improving the strength and rigidity of the structure of the support plate 2 itself by realizing the integrated design of the support plate 2, thereby reducing the possibility of deformation or fracture of the support plate 2 when it falls or is impacted, thereby improving the reliability of the entire shaft assembly A, and realizing the thin and light design of the shaft assembly A. At the same time, the integrated design of the support plate 2 is also conducive to increasing the support area of ​​the support plate 2 for the flexible display screen, increasing the support force of the support plate 2 for the flexible display screen, and the support plate 2 is a fixed support plate, which further improves the support effect of the support plate 2 on the flexible display screen, reduces the possibility of the flexible display screen sinking after pressing, and reduces the creases on the flexible display screen and the damage or even failure after falling or being impacted. On the other hand, such a design is also conducive to reducing the production difficulty of the support plate 2 and improving the mass production of the support plate 2, wherein the support member 21 can be manufactured by a variety of methods such as mold forming, CNC machine tool (Computer numerical control, CNC) processing or 3D printing. In addition, the embodiment of the present application is also conducive to realizing the modular assembly of the support plate 2, improving the assembly efficiency and assembly yield of the support plate 2, and through the splicing of each support member 21, it is conducive to improving the maintainability of the support plate 2 and reducing the maintenance cost of the support plate 2.

[0116] like Figures 5 to 9 As shown, in a possible implementation, the connecting female seat 23 is provided with a receiving groove 231 along the thickness direction of the shaft assembly A, and the connecting male head 22 includes a male head body 221 , and at least a portion of the male head body 221 is received in the receiving groove 231 .

[0117] A portion of the male body 221 may be located inside the receiving groove 231, while another portion is located outside the receiving groove 231. The male body 221 as a whole is approximately triangular in shape, that is, the cross-sectional area of ​​the male body 221 gradually increases toward the side close to the bottom wall of the receiving groove 231. This arrangement is conducive to reducing the possibility of interference between the male body 221 and other components on the shaft assembly A. The receiving groove 231 can accommodate and limit the male body 221. Through the cooperation between the male body 221 and the receiving groove 231, it is conducive to improving the stability and reliability of the connection between the connecting female seat 23 and the connecting male head 22, thereby facilitating a stable and reliable connection between the two support members 21, and further facilitating improving the reliability of the entire shaft assembly A.

[0118] like Figure 6 and Figure 7 As shown, in a possible embodiment, a snap-fit ​​groove 232 is provided on the side wall of the accommodating groove 231 along the length direction of the rotating shaft assembly A, the snap-fit ​​groove 232 is provided along the thickness direction of the rotating shaft assembly A and is connected to the accommodating groove 231, and a snap-fit ​​portion 222 is provided on one side of the male head body 221, and the snap-fit ​​portion 222 is located in the snap-fit ​​groove 232.

[0119] The shape of the engaging groove 232 corresponds to the shape of the engaging portion 222. When the male body 221 extends into the receiving groove 231, the engaging portion 222 can cooperate with the engaging groove 232. By providing the engaging portion 222 and the engaging groove 232, the stability of the connection between the male connector 22 and the female connector 23 is further improved, and the possibility of the male body 221 coming out of the receiving groove 231 is reduced.

[0120] like Figures 6 to 8 As shown, in a possible embodiment, along the thickness direction of the shaft assembly A, the bottom wall of the accommodating groove 231 is provided with at least one first mounting hole 231a, and the male head body 221 is provided with at least one second mounting hole 221a, and the first mounting hole 231a and the second mounting hole 221a are used to cooperate with the first fastener 3.

[0121] After the male body 221 is inserted into the receiving groove 231, the first mounting hole 231a is connected with the corresponding second mounting hole 221a, and the first fastener 3 can be a screw, which can be inserted into the first mounting hole 231a and the second mounting hole 221a to achieve the fixed connection between the male connector 22 and the female connector 23. Specifically, along the length direction of the shaft assembly A, the bottom wall of the receiving groove 231 is provided with two first mounting holes 231a, and correspondingly, the male body 221 is provided with two second mounting holes 221a. This connection method has high reliability, reduces the possibility of loosening of the male connector 22 and the female connector 23 under the impact of external force, and causes the failure of the cooperation between the two, that is, it is conducive to improving the stability and reliability of the connection between the male connector 22 and the female connector, thereby improving the stability of the entire support plate 2 structure, and through the stable connection between the support members 21, the structural strength of the support plate 2 itself is improved, and the possibility of deformation or breakage of the support plate 2 is reduced.

[0122] like Figures 6 to 8 As shown, in a possible embodiment, the connecting female seat 23 is provided with a positioning member 233, and along the width direction of the shaft assembly A, the positioning member 233 is located on at least one side of the accommodating groove 231, and the positioning member 233 extends along the thickness direction of the shaft assembly A toward the side away from the accommodating groove 231, and the connecting male head 22 is provided with a positioning hole 223, and along the width direction of the shaft assembly A, the positioning hole 223 is located on at least one side of the male head body 221, and the positioning member 233 is used to cooperate with the corresponding positioning hole 223.

[0123] Specifically, positioning members 233 are provided on both sides of the receiving groove 231, and correspondingly, positioning holes 223 are provided on both sides of the connecting male head 22. The positioning members 233 can be inserted into the corresponding positioning holes 223, and can limit the connection female seat 23 and the connecting male head 22 to limit the relative position between the two. Such a design is conducive to improving the accuracy of the matching between the connecting female seat 23 and the connecting male head 22, that is, the male head body 221 can be accurately inserted into the receiving groove 231, thereby helping to improve the assembly efficiency between the two supporting members 21. At the same time, such a design also reduces the possibility of shaking between the connecting male head 22 and the connecting female seat 23, and further improves the stability of the connection between the two.

[0124] like Figures 5 to 8 As shown, in a possible embodiment, the accommodating groove 231 is provided with abutment portions 234 on both sides along the width direction of the shaft assembly A, the abutment portions 234 are connected to the side walls of the accommodating groove 231, and the positioning member 233 is provided on the abutment portion 234; the male head body 221 is provided with a mating portion 224 on one side along the length direction of the shaft assembly A, the mating portion 224 is connected to the male head body 221, and the positioning hole 223 is opened in the mating portion 224, and along the thickness direction of the shaft assembly A, the bottom wall of the mating portion 224 abuts against the top wall of the abutment portion 234.

[0125] The matching portion 224 is located on one side of the male body 221 along the length direction of the shaft assembly A. The matching portion 224 extends along the length direction of the shaft assembly A. Specifically, along the length direction of the shaft assembly A, the size of the matching portion 224 is larger than the size of the male body 221. The positioning hole 223 can be provided on both sides of the matching portion 224. The abutting portion 234 can be a platform provided on both sides of the receiving groove 231. When the male connector 22 is matched with the female connector 23, the matching portion 224 can simultaneously abut against the abutting portions 234 on both sides of the receiving groove 231. Such a setting is conducive to increasing the contact area between the female connector 23 and the male connector 22, thereby facilitating the stability and reliability of the matching between the male connector 22 and the female connector 23. At the same time, it also plays a limiting role on the male connector 22 and the female connector 23, reducing the possibility of the two shaking along the thickness direction of the shaft assembly A.

[0126] like Figures 5 to 7 , Fig. 9 As shown, in a possible embodiment, extension portions 235 are further provided on both sides of the accommodating groove 231 along the width direction of the shaft assembly A, the extension portion 235 is located on one side of the abutment portion 234 and connected to the abutment portion 234, the extension portion 235 extends along the thickness direction of the shaft assembly A toward the side away from the accommodating groove 231, and along the length direction of the shaft assembly A, the side wall of the extension portion 235 abuts against the side wall of the mating portion 224.

[0127] Specifically, Figure 2 As shown, the shaft assembly A has a first swing arm 6, and the first swing arm 6 is rotatably connected to the support member 21, as shown in FIG. Figure 7 As shown, the support member 21 is provided with a slide groove 7 for cooperating with the first swing arm 6, and the extension portion 235 can be a side wall of the slide groove 7. Through the abutment between the extension portion 235 and the matching portion 224, the contact area between the connecting female seat 23 and the connecting male head 22 is further increased, and at the same time, the possibility of sliding of the connecting male head 22 and the connecting female seat 23 along the length direction of the rotating shaft assembly A is reduced, which is further conducive to improving the stability of the connection between the two.

[0128] like Fig. 9 As shown, in a possible embodiment, a first joint portion 29a is formed after the bottom wall of the mating portion 224 abuts against the top wall of the abutting portion 234, and the connecting male head 22 and the connecting female seat 23 are welded through the first joint portion 29a, and / or, a second joint portion 29b is formed after the side wall of the mating portion 224 abuts against the side wall of the extending portion 235, and the connecting male head 22 and the connecting female seat 23 are welded through the second joint portion 29b; and / or, a third joint portion 29c is formed after the side wall of the mating portion 224 abuts against the side wall of the extending portion 235, and the connecting male head 22 and the connecting female seat 23 are welded through the third joint portion 29c.

[0129] The female connector 23 and the male connector 22 can be fixed together by welding, and the matching portion 224, the abutting portion 234 and the extension portion 235 provide welding positions for the two. Among them, when the matching portion 224 abuts the abutting portion 234, a first bonding portion 29a is formed at the junction of the outer sides of the two. During welding, the first bonding portion 29a can be welded from the outside of the shaft assembly A to achieve a fixed connection between the male connector 22 and the female connector 23. Similarly, when the matching portion 224 abuts the extension portion 235, a second bonding portion 29b and a third bonding portion 29c are formed at the junction of the outer sides of the two. During welding, the first bonding portion 29a, the second bonding portion 29b and the third bonding portion 29c can be welded at the same time, or only one of them can be welded, as long as the strength requirements of the support plate 2 are met. Preferably, laser welding can be used as the welding method. By welding the connecting female socket 23 and the connecting male head 22 together, the stability of the connection between the two is further improved, and the possibility of loosening between the connecting female socket 23 and the connecting male head 22 is reduced, which is beneficial to improving the stability of the overall structure of the support plate 2, thereby improving the strength and rigidity of the support plate 2.

[0130] like Figure 7 and Fig. 9 As shown, in a possible embodiment, there is an avoidance groove 236 connected to the accommodating groove 231 between the extension portions 235 on both sides of the accommodating groove 231, and the male head body 221 has a protrusion 221b, which is located in the avoidance groove 236 and is used to cooperate with the avoidance groove 236.

[0131] The avoidance groove 236 plays a role in avoiding the male body 221, so that the male body 221 can be extended into the receiving groove 231 along the thickness direction of the shaft assembly A, reducing the possibility of interference between the male body 221 and the matching portion 224, which is conducive to improving the accuracy of the matching between the connecting female seat 23 and the connecting male head 22. The raised portion 221b of the male body 221 can be clamped in the avoidance groove 236, further improving the reliability of the matching between the connecting female seat 23 and the connecting male head 22.

[0132] like Figures 5 to 8 , Fig.10As shown, in a possible embodiment, the rotating shaft assembly A has a synchronous damping module 4, and among the supporting members 21, the supporting member 21 connected to the synchronous damping module 4 is a first supporting member 24, and the first supporting member 24 includes a main body 241, one end of the main body 241 is connected to the connecting male head 22, and the synchronous damping module 4 is arranged on the main body 241; wherein, the synchronous damping module 4 has a shaft body 41, and the first supporting member 24 has a matching hole group 242, and the matching hole group 242 at least includes a first matching hole 242a and a second matching hole 242b opened along the length direction of the rotating shaft assembly A, and the first matching hole 242a and the second matching hole 242b are located in the main body 241, and along the length direction of the rotating shaft assembly A, the first matching hole 242a and the second matching hole 242b are coaxial and spaced apart, and the shaft body 41 is used to pass through the first matching hole 242a and the second matching hole 242b to connect with the main body 241.

[0133] According to the different positions of the first support member 24 on the support plate 2, the first support member 24 also has different forms, such as Figure 5 and Figure 6 As shown, a portion of the first support member 24 may be provided with only the connecting male head 22, and Figure 7 As shown, a part of the first support member 24 can be provided with a connecting male connector 22 at one end and a connecting female connector 23 at the other end. The synchronous damping module 4 includes a damping module 42 and a synchronization module 43, both of which are inserted into the shaft body 41. The shaft body 41 can play a positioning role for the damping module 42 and the synchronization module 43, thereby facilitating the improvement of the positional accuracy between the damping module 42 and the synchronization module 43. Among them, the synchronization module 43 has a second swing arm 431, and the second swing arm 431 can rotate around the shaft body 41. Specifically, along the length direction of the rotating shaft assembly A, the first matching hole 242a and the second matching hole 242b can be provided on both sides of the damping module 42, and the shaft body 41 can pass through the first matching hole 242a and the second matching hole 242b. The first matching hole 242a and the second matching hole 242b support the shaft body 41, which is beneficial to improve the stability of the shaft body 41 on the support plate 2 and reduce the possibility of deformation of the shaft body 41 after being subjected to force, which is beneficial to improve the working stability of the damping module 42 and the synchronization module 43. At the same time, the first matching hole 242a and the second matching hole 242b also limit the shaft body 41, so that the shaft body 41 can be maintained in a relatively fixed position on the support plate 2. Since the second swing arm 431 rotates around the shaft body 41, it is beneficial to limit the rotation center of the second swing arm 431 by limiting the position of the shaft body 41, which is beneficial to improve the movement accuracy of the second swing arm 431, so as to improve the movement accuracy of the entire shaft assembly A, thereby improving the reliability of the shaft assembly A.

[0134] like Fig.11As shown, each support member 21 further includes a second support member 28, which can be located between two adjacent first support members 24. Connecting female seats 23 are provided on both sides of the second support member 28 to cooperate with the connecting male head 22 of the corresponding first support member 24. Specifically, a sliding groove 7 can be provided on the second support member 28 so that the first swing arm 6 can be rotatably connected to the second support member 28.

[0135] like Figure 6 , Figure 8 and Fig.10 As shown, in a possible embodiment, the mating hole group 242 also includes a third mating hole 242c, the third mating hole 242c is opened on the connecting male head 22, the third mating hole 242c is coaxially arranged with the first mating hole 242a and the second mating hole 242b, and the shaft 41 is used to pass through the third mating hole 242c.

[0136] A third mating hole 242c is provided on the connecting male head 22 of the first support member 24, and the third mating hole 242c can also cooperate with the shaft body 41, that is, along the length direction of the rotating shaft assembly A, the mating hole group 242 is provided with three mating holes, and the three mating holes are coaxial and spaced apart. Such a design is conducive to achieving multi-point support and multi-point limiting functions for the shaft body 41, and is further conducive to improving the stability of the shaft body 41 set on the support plate 2.

[0137] like Figures 6 to 8 , Fig.10 As shown, in a possible embodiment, the third mating hole 242c is a non-complete circular hole structure, and the connecting female seat 23 that cooperates with the connecting male head 22 of the first support member 24 is provided with a mating groove 237 along the thickness direction of the shaft assembly A, and a part of the shaft body 41 is accommodated between the third mating hole 242c and the mating groove 237.

[0138] The third matching hole 242c can have a semi-hole structure, and the female connection seat 23 that matches the first support member 24 is provided with a matching groove 237 on the abutment portion 234. When the male connection head 22 matches the female connection seat 23, the third matching hole 242c can be connected to the matching groove 237 to accommodate a portion of the shaft body 41. This design further improves the support and limiting effect on the shaft body 41, thereby improving the stability of the shaft body 41. Among them, since the matching groove 237 also plays a role in accommodating the shaft body 41, the possibility of interference between the shaft body 41 and other parts on the female connection seat 23 is reduced, thereby improving the stability and reliability of the connection between the male connection head 22 and the female connection seat 23. Fig.11As shown, the connecting female seat 23 on both sides of the second support member 28 can be provided with the above-mentioned matching grooves 237 for matching with the shaft body 41 on the corresponding first support member 24. In another possible embodiment, the connecting female seat 23 may not have the matching groove 237, and the shaft body 41 may abut against the abutment portion 234, which can also achieve the matching between the connecting female seat 23 and the connecting male head 22.

[0139] like Figure 6 , Figure 8 and Fig.10 As shown, in a possible embodiment, the synchronous damping module 4 has two shafts 41 , and the two shafts 41 are spaced apart along the width direction of the rotating shaft assembly A. The first support member 24 is provided with two matching hole groups 242 , and the two shafts 41 are used to pass through the corresponding matching hole groups 242 .

[0140] The synchronization module 43 can have two second swing arms 431, and the two shafts 41 pass through the corresponding second swing arms 431 respectively. Correspondingly, matching hole groups 242 are provided on both sides of the first support member 24, and the shafts 41 cooperate with the corresponding matching hole groups 242, thereby further improving the accuracy of the movement of the synchronous damping module 4.

[0141] like Figure 5 , Fig.10 and Fig.12 As shown, in a possible embodiment, the first support member 24 may also be provided with the above-mentioned first swing arm 6 and the slide groove 7, that is, the first support member 24 is integrated with the first swing arm 6 and the second swing arm 431, and the rotation centers of the first swing arm 6 and the second swing arm 431 are both restricted on the first support member 24, that is, the first swing arm 6 rotates along the slide groove 7 on the first support member 24, and the second swing arm 431 rotates around the shaft 41 fixed on the first support member 24. Such a design is conducive to improving the motion accuracy between the swing arms and further improving the reliability of the shaft assembly A. In addition, since the support plate 2 is an integrated design, its multiple support members 21 are connected together by connecting the male connector 22 and the female connector 23, which improves the matching accuracy between the support members 21, thereby facilitating the improvement of the motion accuracy between the swing arms of the support members 21 on the entire shaft assembly A.

[0142] like Fig.13As shown, in a possible embodiment, the main body 241 is provided with a stop portion 243, the stop portion 243 includes a first stop surface 243a and a second stop surface 243b, the first stop surface 243a is connected and intersects with the second stop surface 243b, the second swing arm 431 has a first stop mating surface 431a and a second stop mating surface 431b, when the second swing arm 431 rotates to the first preset position, the first stop surface 243a can abut against the first stop mating surface 431a, when the second swing arm 431 rotates to the second preset position, the second stop surface 243b can abut against the second stop mating surface 431b.

[0143] The main body 241 and the second swing arm 431 are respectively provided with stop surfaces, wherein the first stop surface 243a can be abutted and matched with the first stop mating surface 431a, and the second stop surface 243b can be abutted and matched with the second stop mating surface 431b. Such a design is conducive to achieving a stop effect on the second swing arm 431, thereby limiting the rotation range of the second swing arm 431, and further conducive to improving the movement accuracy and movement stability of the second swing arm 431. In a possible embodiment, the shaft cover 1 is bonded to the support plate 2, and / or the shaft cover 1 is connected to the support plate 2 via a second fastener 5.

[0144] like Fig.10 and Fig.12 As shown, the shaft cover 1 is provided with a third mounting hole 13, and correspondingly, the support member 21 is provided with a fourth mounting hole 27, and the third mounting hole 13 and the fourth mounting hole 27 can cooperate with the second fastener 5, so that the shaft cover 1 and the support plate 2 are connected through the second fastener 5. Specifically, the shaft cover 1 can be provided with a plurality of third mounting holes 13 along the length direction of the rotating shaft assembly A, and the support member 21 at the position corresponding to each third mounting hole 13 is provided with a fourth mounting hole 27 that can cooperate with the corresponding third mounting hole 13. Alternatively, glue can be dispensed on the shaft cover 1 so that the shaft cover 1 and the support plate 2 are bonded together. Alternatively, glue can be dispensed on the shaft cover 1 first, and after the shaft cover 1 and the support plate 2 are bonded, the shaft cover 1 and the support plate 2 are connected through the second fastener 5. By adopting the above-mentioned connection method, it is beneficial to improve the stability and reliability of the connection between the shaft cover 1 and the support plate 2, and then it is beneficial to improve the reliability of the entire rotating shaft assembly A.

[0145] like Fig.10 and Fig.12 As shown, in a possible embodiment, at least one limit member 11 is provided on the side of the shaft cover 1 facing the support plate 2, and the limit member 11 extends along the thickness direction of the rotating shaft assembly A toward the side close to the support plate 2. A limit hole 25 is provided on the support member 21 at the corresponding position of the limit member 11, and the limit hole 25 is used to cooperate with the limit member 11.

[0146] The shaft cover 1 can have multiple limit members 11, which are arranged along the length direction of the rotating shaft assembly A, and the limit members 11 can extend into the corresponding limit holes 25. Through the cooperation between the limit members 11 and the limit holes 25, the shaft cover 1 and the support plate 2 can be limited, which is beneficial to improve the accuracy of assembly of the two, and at the same time, it is also beneficial to improve the stability of the connection between the two, and reduce the possibility of shaking between the shaft cover 1 and the support plate 2.

[0147] like Fig.10 and Fig.12 As shown, in a possible embodiment, at least one anti-twist part 12 is further provided on the side of the shaft cover 1 facing the support plate 2, and the anti-twist part 12 extends along the thickness direction of the rotating shaft assembly A toward the side close to the support plate 2, and the support part 21 at the corresponding position of the anti-twist part 12 is provided with an anti-twist hole 26, and the anti-twist hole 26 is used to cooperate with the anti-twist part 12.

[0148] The shaft cover 1 may also have a plurality of anti-twist parts 12, the cross-section of the anti-twist part 12 may be rectangular, and correspondingly, the anti-twist hole 26 is also a rectangular hole. This design enables the anti-twist part 12 to reduce the possibility of rotation of the shaft cover 1 relative to the support plate 2 after extending into the corresponding anti-twist hole 26, thereby facilitating improving the accuracy and stability of the fit between the two. At the same time, the anti-twist part 12 can also serve as a connecting rib of the shaft cover 1 to improve the manufacturability of the shaft cover 1.

[0149] An embodiment of the present application also provides an electronic device, including: a flexible display screen (not shown in the figure) and a hinge assembly A, wherein the hinge assembly A is the hinge assembly A in any of the above items, wherein the support plate 2 is used to support the flexible display screen.

[0150] The electronic device may be a foldable electronic device, specifically, it may be a mobile phone, a tablet computer, a laptop computer, an artificial intelligence (AI) device, a wearable device, a vehicle-mounted device, etc., and the embodiment of the present application does not impose any special restrictions on the specific type of the electronic device. The electronic device has a flexible display screen, which may be a flexible organic light emitting diode (OLED) display screen. The flexible display screen can be folded or unfolded through a rotating shaft assembly A, and the support plate 2 can support the bending area of ​​the flexible display screen.

[0151] By adopting the above-mentioned hinge assembly A, it is beneficial to improve the reliability of the entire electronic device and to realize the design of electronic device to be thin and light. At the same time, since the hinge assembly A has the above-mentioned technical effects, the electronic device having the hinge assembly A also has the above-mentioned technical effects, which will not be repeated here.

[0152] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A rotating shaft assembly, characterized in that: include: Axle cover (1); A support plate (2), wherein the support plate (2) is fixedly connected to the shaft cover (1); The support plate (2) comprises at least two support members (21), the support members (21) are separately arranged and arranged along the length direction of the shaft assembly (A), one of the two adjacent support members (21) is provided with a connecting male head (22), and the other is provided with a connecting female seat (23), and the connecting female seat (23) cooperates with the connecting male head (22) to connect the two adjacent support members (21); The female connection seat (23) is provided with a positioning piece (233), the male connection head (22) is provided with a positioning hole (223), and the positioning piece (233) cooperates with the corresponding positioning hole (223).

2. The shaft assembly according to claim 1, characterized in that: The connecting female seat (23) is provided with a receiving groove (231) along the thickness direction of the rotating shaft assembly (A); the connecting male head (22) comprises a male head body (221); at least a portion of the male head body (221) is received in the receiving groove (231).

3. The shaft assembly according to claim 2, characterized in that: The side wall of the accommodating groove (231) along one side of the length direction of the rotating shaft assembly (A) is provided with a snap-fit ​​groove (232), the snap-fit ​​groove (232) is provided along the thickness direction of the rotating shaft assembly (A) and is connected with the accommodating groove (231), and a snap-fit ​​portion (222) is provided on one side of the male head body (221), and the snap-fit ​​portion (222) is located in the snap-fit ​​groove (232).

4. The shaft assembly according to claim 3, characterized in that: Along the thickness direction of the rotating shaft assembly (A), the bottom wall of the accommodating groove (231) is provided with at least one first mounting hole (231a), and the male head body (221) is provided with at least one second mounting hole (221a), and the first mounting hole (231a) and the second mounting hole (221a) are used to cooperate with the first fastener (3).

5. The shaft assembly according to claim 4, characterized in that: Along the width direction of the rotating shaft assembly (A), the positioning member (233) is located on at least one side of the accommodating groove (231), and the positioning member (233) extends along the thickness direction of the rotating shaft assembly (A) toward a side away from the accommodating groove (231); Along the width direction of the rotating shaft assembly (A), the positioning hole (223) is located on at least one side of the male head body (221).

6. The shaft assembly according to claim 5, characterized in that: The accommodating groove (231) is provided with abutment portions (234) on both sides along the width direction of the rotating shaft assembly (A), the abutment portions (234) are connected to the side walls of the accommodating groove (231), and the positioning member (233) is provided on the abutment portion (234); the male head body (221) is provided with a matching portion (224) on one side along the length direction of the rotating shaft assembly (A), the matching portion (224) is connected to the male head body (221), the positioning hole (223) is opened in the matching portion (224), and along the thickness direction of the rotating shaft assembly (A), the bottom wall of the matching portion (224) abuts against the top wall of the abutment portion (234).

7. The shaft assembly according to claim 6, characterized in that: The receiving groove (231) is further provided with extension portions (235) on both sides along the width direction of the rotating shaft assembly (A); the extension portion (235) is located on one side of the abutting portion (234) and is connected to the abutting portion (234); the extension portion (235) extends along the thickness direction of the rotating shaft assembly (A) toward a side away from the receiving groove (231); along the length direction of the rotating shaft assembly (A), the side wall of the extension portion (235) abuts against the side wall of the matching portion (224).

8. The shaft assembly according to claim 7, characterized in that: A first joint portion (29a) is formed when the bottom wall of the matching portion (224) abuts against the top wall of the abutting portion (234), and the connecting male head (22) and the connecting female seat (23) are welded via the first joint portion (29a); And / or, a second joint portion (29b) is formed after the side wall of the matching portion (224) abuts against the side wall of the extending portion (235), and the connecting male head (22) and the connecting female seat (23) are welded via the second joint portion (29b); And / or, a third joint portion (29c) is formed when the side wall of the matching portion (224) abuts against the side wall of the extending portion (235), and the connecting male head (22) and the connecting female socket (23) are welded via the third joint portion (29c).

9. The shaft assembly according to claim 7, characterized in that: An avoidance groove (236) communicating with the accommodating groove (231) is provided between the extension portions (235) on both sides of the accommodating groove (231), and the male head body (221) has a protruding portion (221b), and the protruding portion (221b) is located in the avoidance groove (236) and is used to cooperate with the avoidance groove (236).

10. The shaft assembly according to any one of claims 1 to 9, characterized in that: The rotating shaft assembly (A) has a synchronous damping module (4); among the supporting members (21), the supporting member (21) connected to the synchronous damping module (4) is a first supporting member (24); the first supporting member (24) comprises a main body (241); one end of the main body (241) is connected to the connecting male head (22); and the synchronous damping module (4) is arranged on the main body (241); The synchronous damping module (4) has a shaft (41), the first support member (24) has a matching hole group (242), the matching hole group (242) at least includes a first matching hole (242a) and a second matching hole (242b) opened along the length direction of the rotating shaft assembly (A), the first matching hole (242a) and the second matching hole (242b) are located in the main body (241), along the length direction of the rotating shaft assembly (A), the first matching hole (242a) and the second matching hole (242b) are coaxial and spaced apart, and the shaft (41) is used to pass through the first matching hole (242a) and the second matching hole (242b) to connect with the main body (241).

11. The shaft assembly according to claim 10, characterized in that: The mating hole group (242) also includes a third mating hole (242c), the third mating hole (242c) is opened on the connecting male head (22), the third mating hole (242c) is coaxially arranged with the first mating hole (242a) and the second mating hole (242b), and the shaft (41) is used to pass through the third mating hole (242c).

12. The shaft assembly according to claim 11, characterized in that: The third matching hole (242c) is a non-complete circular hole structure, and the connecting female seat (23) that matches the connecting male head (22) of the first support member (24) is provided with a matching groove (237) along the thickness direction of the rotating shaft assembly (A), and a part of the shaft body (41) is accommodated between the third matching hole (242c) and the matching groove (237).

13. The shaft assembly according to claim 10, characterized in that: The synchronous damping module (4) has two shafts (41), and the two shafts (41) are arranged at intervals along the width direction of the rotating shaft assembly (A). The first support member (24) is provided with two matching hole groups (242), and the two shafts (41) are used to pass through the corresponding matching hole groups (242).

14. The shaft assembly according to claim 10, characterized in that: The rotating shaft assembly (A) further comprises a first swing arm (6), wherein the first swing arm (6) is rotationally connected to the main body (241); the synchronous damping module (4) comprises a synchronous module (43), wherein the synchronous module (43) comprises a second swing arm (431), wherein the second swing arm (431) is rotationally connected to the main body (241) via the shaft (41), and the first swing arm (6) and the second swing arm (431) are arranged along the length direction of the rotating shaft assembly (A).

15. The shaft assembly according to claim 14, characterized in that: The main body (241) is provided with a stop portion (243), and the stop portion (243) includes a first stop surface (243a) and a second stop surface (243b), the first stop surface (243a) and the second stop surface (243b) are connected and intersected, and the second swing arm (431) has a first stop mating surface (431a) and a second stop mating surface (431b), when the second swing arm (431) rotates to a first preset position, the first stop surface (243a) can abut against the first stop mating surface (431a), and when the second swing arm (431) rotates to a second preset position, the second stop surface (243b) can abut against the second stop mating surface (431b).

16. The shaft assembly according to any one of claims 1 to 9, characterized in that: The shaft cover (1) is bonded to the support plate (2), and / or the shaft cover (1) is connected to the support plate (2) via a second fastener (5).

17. The shaft assembly according to any one of claims 1 to 9, characterized in that: At least one limiting member (11) is provided on the side of the shaft cover (1) facing the support plate (2); the limiting member (11) extends along the thickness direction of the rotating shaft assembly (A) toward the side close to the support plate (2); a limiting hole (25) is provided on the support member (21) at a position corresponding to the limiting member (11); and the limiting hole (25) is used to cooperate with the limiting member (11).

18. The shaft assembly according to any one of claims 1 to 9, characterized in that: At least one anti-twist component (12) is further provided on the side of the shaft cover (1) facing the support plate (2); the anti-twist component (12) extends along the thickness direction of the rotating shaft assembly (A) toward the side close to the support plate (2); an anti-twist hole (26) is provided on the support member (21) at a position corresponding to the anti-twist component (12); the anti-twist hole (26) is used to cooperate with the anti-twist component (12).

19. An electronic device, characterized in that: include: Flexible display screens; A shaft assembly (A), wherein the shaft assembly (A) is the shaft assembly (A) according to any one of claims 1 to 18; Wherein, the support plate (2) is used to support the flexible display screen.

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