Rotating shaft mechanism and electronic device

Abstract

The application relates to the technical field of electronic equipment, in particular to a rotating shaft mechanism and electronic equipment. The rotating shaft mechanism comprises a base and an opening and closing assembly. The opening and closing assembly comprises two swing arm assemblies and a plurality of first cam structures. The two swing arm assemblies are respectively located on the opposite sides of the base. The swing arm assembly comprises a first swing arm and a plurality of first elastic members. The first swing arm can rotate relative to the base between an unfolded position and a folded position. The first swing arm comprises a plurality of rotating parts. The rotating parts are rotationally connected with the base. The first swing arm further comprises at least three second cam structures. The rotating parts are connected with the second cam structures. The second cam structures are matched with the first cam structures. When the first swing arm rotates relative to the base, the first cam structures and the second cam structures rotate relative to each other, so that the first elastic members can be compressed. The application can improve the damping force of the first swing arm, thereby ensuring the opening and closing feeling of the electronic equipment and the effect of maintaining the state.

Description

Technical Field

[0001] This application relates to the field of electronic equipment technology, and in particular to a rotating shaft mechanism and electronic equipment. Background Technology

[0002] With the rapid development of flexible display technology, foldable electronic devices, especially foldable phones, are gradually becoming popular products in the market. The innovation of these devices lies in their ability to fold and unfold flexibly through a hinge mechanism, greatly improving portability and user experience. In foldable electronic devices, the hinge mechanism has a damping mechanism to ensure a smooth transition during unfolding and folding, reducing impact and shaking, and maintaining the opening and closing feel and stability during rotation. However, as electronic devices become increasingly thinner and lighter, the damping force provided by the damping mechanism may become insufficient, thus affecting the opening and closing feel and stability. Summary of the Invention

[0003] This application provides a pivot mechanism and an electronic device to solve the technical problem that the damping force provided by the damping mechanism in the related art is often insufficient, thereby affecting the opening and closing feel and the effect of maintaining the state.

[0004] The technical solution is as follows:

[0005] The first aspect of this application provides a rotating shaft mechanism, which includes: a base and an opening and closing assembly; the opening and closing assembly includes two swing arm assemblies and a plurality of first cam structures, the two swing arm assemblies are respectively located on opposite sides of the base, the swing arm assembly includes a first swing arm and a plurality of first elastic elements, and the first swing arm is rotatable relative to the base between an unfolded position and a folded position.

[0006] The first swing arm includes multiple rotating parts that are rotatably connected to the base. The first swing arm also includes at least three second cam structures that are connected to the rotating parts and cooperate with the first cam structures. When the first swing arm rotates relative to the base, the first cam structure and the second cam structure rotate relative to each other, so that the first elastic element can be compressed.

[0007] By adopting the above scheme, the second cam structure and the first cam structure can cooperate to form a cam group. After the first swing arm rotates relative to the base, the first cam structure and the second cam structure rotate relative to each other, which can compress the first elastic element. The elastic force of the first elastic element acts on the cam group to provide a damping force opposite to the rotation direction of the first swing arm. This allows the first swing arm to be suspended at a position between the unfolded state and the folded state, so that the electronic device can be unfolded at a suitable angle for user convenience. Since the first swing arm has more than three second cam structures, at least three cam groups can be formed in the swing arm assembly, which can compress multiple first elastic elements to improve the damping force on the first swing arm, thereby ensuring the opening and closing feel of the electronic device and the effect of maintaining its state.

[0008] In some implementations, multiple rotating parts are spaced apart along the length of the rotating shaft mechanism, and each rotating part has two opposing end faces;

[0009] At least one of the two opposite end faces of the rotating part is fixedly connected to a second cam structure.

[0010] By adopting the above scheme, the second cam structure is fixed on the end face of the rotating part. When the rotating part rotates, the second cam structure can rotate relative to the first cam structure, thereby compressing the first elastic element.

[0011] In some implementations, the first swing arm includes three second cam structures and two rotating parts, wherein a second cam structure is fixedly connected to each of the two opposite end faces of one rotating part, and a second cam structure is fixedly connected to one of the two opposite end faces of the other rotating part.

[0012] By adopting the above scheme, the three second cam structures are distributed on the two rotating parts, which helps to reduce the number of rotating parts. In addition, the two end faces of one rotating part are respectively fixedly connected to the second cam structure. This distribution method can make the force transmission more uniform when the first swing arm moves, avoid excessive torsional torque caused by excessive force on one side, thereby reducing structural deformation and improving the reliability and service life of the mechanical system.

[0013] In some implementations, the first swing arm includes four second cam structures and two rotating parts, wherein a second cam structure is fixedly connected to each of the two opposite end faces of one rotating part, and a second cam structure is fixedly connected to each of the two opposite end faces of the other rotating part.

[0014] By adopting the above scheme, the four second cam structures are distributed on the two rotating parts, which helps to reduce the number of rotating parts. The end faces of the other two rotating parts are also distributed with second cam structures. This design can provide more symmetrical force distribution, making the swing arm more stable during movement, reducing swaying or uneven force distribution, thereby improving the mechanical performance of the system. The four second cam structures can distribute the pressure per unit area, reduce local excessive wear, improve the durability of the system, and extend its service life.

[0015] In some implementations, a first elastic element is provided between two adjacent rotating parts in the first swing arm along the length direction of the rotating shaft mechanism;

[0016] Along the length of the rotating shaft mechanism, at least one first elastic element is provided on each of the opposite sides of the rotating part.

[0017] By adopting the above scheme, a first elastic element is set between the two rotating parts. In this way, the second cam structure on the rotating part cooperates with the first cam structure to double the compression of the first elastic element, thereby improving the damping effect on the first swing arm. Furthermore, first elastic elements are set on opposite sides of a rotating part, so that the two first elastic elements can apply force to the rotating part, which is beneficial to improving the damping effect on the first swing arm.

[0018] In some implementations, the opening and closing assembly also includes multiple supports, which are spaced apart along the length of the rotating shaft mechanism, and the supports can move relative to the base along the length of the rotating shaft mechanism.

[0019] The two opposite ends of the bracket are respectively connected to a first cam structure, and the first cam structure at the two opposite ends of the bracket respectively cooperates with the second cam structure on the rotating part of the first swing arm of the two swing arm assemblies.

[0020] By adopting the above scheme, multiple supports are distributed along the length of the rotating shaft mechanism, making the movement of the opening and closing components smoother. Each end of the support is connected to a first cam structure, which corresponds to the second cam structure of each of the two swing arm components. This allows the opposite ends of the support to move synchronously, thus achieving smooth overall movement of the support. Furthermore, the first cam structure at each end of the support enables the linkage of the two swing arm components.

[0021] In some implementations, there are two supports located between two adjacent rotating parts in the first swing arm along the length of the rotating shaft mechanism.

[0022] A first elastic element is provided between two supports located between two adjacent rotating parts in the first swing arm;

[0023] Along the length of the rotating shaft mechanism, supports are provided on opposite sides of at least one rotating part of the first swing arm.

[0024] By adopting the above scheme, the damping force on the two first swing arms in the opening and closing assembly can be evenly distributed when they rotate using two supports.

[0025] In some implementations, the opening and closing assembly also includes a second elastic element, which is also provided between two supports located between two adjacent rotating parts in the first swing arm.

[0026] By adopting the above scheme and adding a second elastic element, the first elastic element and the second elastic element can cooperate, which is beneficial to increase the damping force and improve the damping effect.

[0027] In some implementations, a first cam structure is fixed on the base, and the first cam structure on the base cooperates with a second cam structure on one of the rotating parts of the first swing arm;

[0028] When relative rotation occurs between the first cam structure and the second cam structure, the first rocker arm can move relative to the base along the length direction of the rotating shaft mechanism.

[0029] By adopting the above scheme, a first cam structure that cooperates with the second cam structure is fixed on the base, which can compress the first elastic element and improve the damping force on the first swing arm.

[0030] In some implementations, the swing arm assembly further includes a first pin, the rotating part having a first pin hole through which the first pin passes; the first pin is connected to the base so that the rotating part and the base are rotatably connected.

[0031] By adopting the above scheme, and by using the first pin shaft to pass through the first pin hole on the rotating part, reliable rotational movement between the rotating part and the base can be achieved, thereby improving the stability of the first swing arm movement. This also facilitates disassembly and maintenance, improving the maintainability of the rotating shaft mechanism.

[0032] In some implementations, the first pin includes a shaft portion and a stop portion, the stop portion and the shaft portion are an integral structure, and the stop portion abuts against the first elastic element.

[0033] By adopting the above solution, the stop portion can provide a stop for the first elastic element, which facilitates the compression of the first elastic element and ensures that the first swing arm will not accidentally displace or fall off during movement. Since the stop portion and the shaft portion are an integrated structure, additional parts can be reduced, assembly complexity can be lowered, and the overall stability of the first pin shaft can be improved.

[0034] In some implementations, the base has a second pin hole into which the end of the first pin is inserted, so that the first pin is confined to the base.

[0035] By adopting the above solution, the end of the first pin is inserted into the second pin hole of the base, forming an embedded limiting structure, which is more stable and less prone to loosening or falling off. In addition, since the first pin is directly inserted into the base, the assembly steps are simplified, the number of parts is reduced, and manufacturing and maintenance costs are lowered.

[0036] In some implementations, the base includes a support plate and multiple central beams, which are distributed along the length of the rotating shaft mechanism and are fixedly connected to the support plate.

[0037] In two adjacent central beams, the end of one central beam is connected to the end of the other central beam;

[0038] A second pin hole is provided on the middle beam;

[0039] In two adjacent middle beams, one end of the first pin is inserted into the second pin hole on one of the middle beams, and the other end of the first pin is inserted into the second pin hole on the other middle beam.

[0040] By adopting the above scheme, the ends of adjacent middle beams are connected, which avoids deformation caused by uneven stress on a single middle beam and improves the stability of the overall structure; and by assembling multiple middle beams, it is beneficial to realize the assembly of opening and closing components.

[0041] In some implementations, the end face of the middle beam has a first groove, and the end face of the rotating part has an insertion protrusion for insertion into the first groove; the first groove is frustum-shaped, and the insertion protrusion is frustum-shaped.

[0042] By adopting the above scheme, it is beneficial to improve the damping force on the first swing arm.

[0043] In some implementations, the opening and closing component also includes a slider, and the first swing arm has a helical synchronous surface, with the slider cooperating with the synchronous surface;

[0044] When the first swing arm rotates relative to the base between the unfolded position and the folded position, the two first swing arms in the two swing arm assemblies can move synchronously, and the slider can move along the length direction of the rotating shaft mechanism.

[0045] By adopting the above scheme, the synchronous movement between the two first swing arms can be achieved by using the slider in conjunction with the spiral synchronous curved surface. In addition, during the unfolding or folding process of the first swing arm, the slider can provide additional guidance, reduce the shaking of the first swing arm during the movement, and improve the stability of the system.

[0046] In some implementations, the pivot mechanism further includes a connector having a guide groove, and a first swing arm having a guide wing confined within the guide groove, so that the connector and the first swing arm are slidably connected.

[0047] Alternatively, the connector has a connecting shaft, the first swing arm has a first shaft hole, and the connecting shaft is inserted into the first shaft hole so that the connector and the first swing arm are hinged together.

[0048] By adopting the above solution, the connector can be fixedly connected to the housing of the electronic device, which makes it easy to drive the first swing arm to move when the housing of the electronic device is unfolded or folded.

[0049] In some implementations, the pivot mechanism also includes a door panel, which is rotatably connected to the connector.

[0050] By adopting the above solution, the door panel can support the flexible display screen of the electronic device in the unfolded state, so as to ensure the flatness of the flexible display screen when it is unfolded.

[0051] In some implementations, the first swing arm further includes a first guide block and a second guide block, and the door panel has a first guide arc surface and a second guide arc surface. The first guide block cooperates with the first guide arc surface, and the second guide arc surface cooperates with the second guide block.

[0052] Along the length of the rotating shaft mechanism, the first guide block and the second guide block are spaced apart, and the first guide arc surface and the second guide arc surface are spaced apart.

[0053] By adopting the above scheme, and utilizing the cooperation between the first guide block and the first guide arc surface, as well as the second guide block and the second guide arc surface, the stability of the door panel movement and the accuracy of the control over the door panel movement can be improved.

[0054] A second aspect of this application provides a pivot mechanism, comprising: a base and an opening / closing assembly;

[0055] The opening and closing assembly includes two swing arm assemblies and a first cam structure. The two swing arm assemblies are located on opposite sides of the base. Each swing arm assembly includes a first swing arm and a first elastic element. The first swing arm can rotate relative to the base between an unfolded position and a folded position.

[0056] The first swing arm includes at least one rotating part, which is rotatably connected to the base. The first swing arm also includes at least one second cam structure, which is connected to the rotating part. The first cam structure is fixed on the base, and the first cam structure on the base cooperates with a second cam structure on the rotating part of the first swing arm.

[0057] When relative rotation occurs between the first cam structure and the second cam structure, the first rocker arm can move relative to the base along the length direction of the rotating shaft mechanism.

[0058] By adopting the above scheme and using the first cam structure fixed on the base, it is beneficial to reduce the number of parts of the rotating shaft mechanism, thereby saving space in the length direction of the rotating shaft mechanism.

[0059] In some implementations, the rotating part has two opposing end faces along the length of the shaft mechanism;

[0060] The two opposite end faces of the rotating part are respectively fixedly connected with a second cam structure.

[0061] By adopting the above scheme, the second cam structure of the rotating part is used in conjunction with the two end faces of the rotating part, which is beneficial to improve the damping force on the first swing arm.

[0062] In some implementations, the first swing arm includes multiple rotating parts; the multiple rotating parts are spaced apart along the length of the rotating shaft mechanism.

[0063] By adopting the above scheme, the use of multiple rotating parts helps to ensure the stability of the rotational connection between the first swing arm and the base.

[0064] In some implementations, the first rocker arm includes at least two second cam structures, wherein the two sides opposite to the rotating part that cooperates with the first cam structure on the base are respectively fixedly connected with the second cam structure.

[0065] By adopting the above scheme, the number of parts in the rotating shaft mechanism can be reduced while improving the damping force on the first swing arm.

[0066] In some implementations, the first swing arm includes three second cam structures and two rotating parts, wherein a second cam structure is fixedly connected to each of the two opposite end faces of one rotating part, and a second cam structure is fixedly connected to one of the two opposite end faces of the other rotating part.

[0067] By adopting the above scheme, the three second cam structures are distributed on the two rotating parts, which helps to reduce the number of rotating parts. In addition, the two end faces of one rotating part are respectively fixedly connected to the second cam structure. This distribution method can make the force transmission more uniform when the first swing arm moves, avoid excessive torsional torque caused by excessive force on one side, thereby reducing structural deformation and improving the reliability and service life of the mechanical system.

[0068] In some implementations, the first swing arm includes four second cam structures and two rotating parts, wherein a second cam structure is fixedly connected to each of the two opposite end faces of one rotating part, and a second cam structure is fixedly connected to each of the two opposite end faces of the other rotating part.

[0069] By adopting the above scheme, the four second cam structures are distributed on the two rotating parts, which helps to reduce the number of rotating parts. The end faces of the other two rotating parts are also distributed with second cam structures. This design can provide more symmetrical force distribution, making the swing arm more stable during movement, reducing swaying or uneven force distribution, thereby improving the mechanical performance of the system. The four second cam structures can distribute the pressure per unit area, reduce local excessive wear, improve the durability of the system, and extend its service life.

[0070] In some implementations, a first elastic element is provided between two adjacent rotating parts in the first swing arm along the length direction of the rotating shaft mechanism;

[0071] Along the length of the rotating shaft mechanism, at least one first elastic element is provided on each of the opposite sides of the rotating part.

[0072] By adopting the above scheme, a first elastic element is set between the two rotating parts. In this way, the second cam structure on the rotating part cooperates with the first cam structure to double the compression of the first elastic element, thereby improving the damping effect on the first swing arm. Furthermore, first elastic elements are set on opposite sides of a rotating part, so that the two first elastic elements can apply force to the rotating part, which is beneficial to improving the damping effect on the first swing arm.

[0073] In some implementations, the opening and closing assembly also includes a bracket that can move relative to the base along the length of the rotating shaft mechanism;

[0074] The two opposite ends of the bracket are respectively connected to a first cam structure, and the first cam structure at the two opposite ends of the bracket respectively cooperates with the second cam structure on the rotating part of the first swing arm of the two swing arm assemblies.

[0075] By adopting the above scheme, the two ends of the bracket are respectively connected to the first cam structure and the second cam structure corresponding to the two swing arm assemblies. This allows the two ends of the bracket to move synchronously, thereby achieving smooth movement of the bracket as a whole. In addition, the two ends of the bracket are respectively connected to the first cam structure, which enables the linkage of the two swing arm assemblies.

[0076] In some implementations, there are two supports located between two adjacent rotating parts in the first swing arm along the length of the rotating shaft mechanism.

[0077] A first elastic element is provided between two supports located between two adjacent rotating parts in the first swing arm.

[0078] By adopting the above scheme, the damping force on the two first swing arms in the opening and closing assembly can be evenly distributed when they rotate using two supports.

[0079] In some implementations, the opening and closing assembly also includes a second elastic element, with the bracket abutting against the second elastic element.

[0080] By adopting the above scheme and adding a second elastic element, the first elastic element and the second elastic element can cooperate, which is beneficial to increase the damping force and improve the damping effect.

[0081] In some implementations, the swing arm assembly further includes a first pin, the rotating part having a first pin hole through which the first pin passes; the first pin is connected to the base so that the rotating part and the base are rotatably connected.

[0082] By adopting the above scheme, and by using the first pin shaft to pass through the first pin hole on the rotating part, reliable rotational movement between the rotating part and the base can be achieved, thereby improving the stability of the first swing arm movement. This also facilitates disassembly and maintenance, improving the maintainability of the rotating shaft mechanism.

[0083] In some implementations, the base has a second pin hole into which the end of the first pin is inserted, so that the first pin is confined to the base.

[0084] By adopting the above solution, the end of the first pin is inserted into the second pin hole of the base, forming an embedded limiting structure, which is more stable and less prone to loosening or falling off. In addition, since the first pin is directly inserted into the base, the assembly steps are simplified, the number of parts is reduced, and manufacturing and maintenance costs are lowered.

[0085] In some implementations, the base includes a support plate and multiple central beams, which are distributed along the length of the rotating shaft mechanism and are fixedly connected to the support plate.

[0086] In two adjacent central beams, the end of one central beam is connected to the end of the other central beam;

[0087] A second pin hole is provided on the middle beam;

[0088] In two adjacent middle beams, one end of the first pin is inserted into the second pin hole on one of the middle beams, and the other end of the first pin is inserted into the second pin hole on the other middle beam.

[0089] By adopting the above scheme, the ends of adjacent middle beams are connected, which avoids deformation caused by uneven stress on a single middle beam and improves the stability of the overall structure; and by assembling multiple middle beams, it is beneficial to realize the assembly of opening and closing components.

[0090] In some implementations, the opening and closing component also includes a slider, and the first swing arm has a helical synchronous surface, with the slider cooperating with the synchronous surface;

[0091] When the first swing arm rotates relative to the base between the unfolded position and the folded position, the two first swing arms in the two swing arm assemblies can move synchronously, and the slider can move along the length direction of the rotating shaft mechanism.

[0092] By adopting the above scheme, the synchronous movement between the two first swing arms can be achieved by using the slider in conjunction with the spiral synchronous curved surface. In addition, during the unfolding or folding process of the first swing arm, the slider can provide additional guidance, reduce the shaking of the first swing arm during the movement, and improve the stability of the system.

[0093] A third aspect of this application provides an electronic device, which includes a flexible display screen, a housing, and a pivot mechanism. The housing includes a first sub-housing and a second sub-housing, which are respectively connected to the pivot mechanism. The first sub-housing and the second sub-housing are rotatable relative to each other through the pivot mechanism. The flexible display screen is connected to the first sub-housing and the second sub-housing respectively. The pivot mechanism is the pivot mechanism in any of the above implementations.

[0094] By adopting the above scheme, after the rotating shaft mechanism is applied to the electronic device, the second cam structure and the first cam structure can cooperate to form a cam group. After the first swing arm rotates relative to the base, the first cam structure and the second cam structure rotate relative to each other, which can compress the first elastic element. The elastic force of the first elastic element acts on the cam group to provide a damping force opposite to the rotation direction of the first swing arm. This allows the first swing arm to be suspended at a position between the unfolded state and the folded state, so that the electronic device can be unfolded at a suitable angle for user convenience. Since the first swing arm has three or more second cam structures, at least three or more cam groups can be formed in the swing arm assembly, which can compress multiple first elastic elements to improve the damping force on the first swing arm, thereby ensuring the opening and closing feel and the effect of maintaining the state of the electronic device. Attached Figure Description

[0095] Figure 1 This is a schematic diagram of the electronic device provided in the embodiment of this application in its unfolded state;

[0096] Figure 2 This is a schematic diagram of the electronic device provided in the embodiments of this application in a semi-deployed state;

[0097] Figure 3 This is a schematic diagram of the structure of the electronic device provided in the embodiment of this application in a folded state;

[0098] Figure 4 This is a partial structural schematic diagram of the first type of rotating shaft mechanism provided in the embodiments of this application;

[0099] Figure 5 yes Figure 4 A structural schematic diagram of the rotating shaft mechanism from another perspective;

[0100] Figure 6 yes Figure 5 A magnified schematic diagram of the partial structure at point A in the middle;

[0101] Figure 7 yes Figure 4 Another structural schematic diagram of the rotating shaft mechanism in the diagram;

[0102] Figure 8 yes Figure 4 A structural schematic diagram of the rotating shaft mechanism from another perspective;

[0103] Figure 9 This is a schematic diagram of the opening and closing component in an embodiment of this application;

[0104] Figure 10 yes Figure 9 Another structural diagram of the opening and closing components;

[0105] Figure 11 This is a schematic diagram of the structure of the first swing arm in the first form of the embodiments of this application;

[0106] Figure 12 yes Figure 11 A structural schematic diagram of the first swing arm from another perspective;

[0107] Figure 13 This is a schematic diagram of the structure of the opening and closing components, door panel and base assembled together in an embodiment of this application;

[0108] Figure 14 yes Figure 13 A magnified view of the structure at point B in the middle;

[0109] Figure 15 This is a schematic diagram of the structure when the opening and closing component and the base are assembled together in an embodiment of this application;

[0110] Figure 16 This is a diagram showing the state of the rotating part and the middle beam in an embodiment of this application when they are not assembled.

[0111] Figure 17 yes Figure 4 Another structural schematic diagram of the rotating shaft mechanism in the diagram;

[0112] Figure 18 yes Figure 17 A magnified schematic diagram of the local structure at point C;

[0113] Figure 19 yes Figure 17 A magnified schematic diagram of the local structure at point D;

[0114] Figure 20 This is a schematic diagram of a portion of the structure of the rotating shaft mechanism in an embodiment of this application;

[0115] Figure 21 This is a schematic diagram of the beam structure in an embodiment of this application;

[0116] Figure 22 yes Figure 21 A magnified schematic diagram of the local structure at point E;

[0117] Figure 23 This is a diagram showing the state of the first swing arm and the slider in an embodiment of this application.

[0118] Figure 24 This is a partial structural schematic diagram of the first swing arm in the second form of the embodiments of this application;

[0119] Figure 25 This is a schematic diagram of the slider structure in an embodiment of this application;

[0120] Figure 26 This is a schematic diagram of the structure of the first swing arm in the third form of the embodiments of this application;

[0121] Figure 27 This is a partial structural schematic diagram of the second type of rotating shaft mechanism in the embodiments of this application;

[0122] Figure 28 yes Figure 27 A magnified schematic diagram of the local structure at point F;

[0123] Figure 29 This is a partial structural schematic diagram of the third type of rotating shaft mechanism in the embodiments of this application;

[0124] Figure 30 This is a partial structural schematic diagram of the fourth type of rotating shaft mechanism in the embodiments of this application;

[0125] Figure 31 This is a partial structural schematic diagram of the fifth type of rotating shaft mechanism in the embodiments of this application;

[0126] Figure 32 This is a partial structural schematic diagram of the sixth type of rotating shaft mechanism in the embodiments of this application;

[0127] Figure 33 This is a partial structural schematic diagram of the seventh type of rotating shaft mechanism in the embodiments of this application;

[0128] Figure 34This is a partial structural schematic diagram of the eighth type of rotating shaft mechanism in the embodiments of this application.

[0129] The meanings of the various symbols in the attached icons are as follows:

[0130] 100. Rotating shaft mechanism; 101. Base; 102. First swing arm; 103. Connector; 104. Middle beam; 105. Support plate; 106. Door panel; 107. First arc-shaped part; 108. First arc-shaped groove; 109. First cam structure; 110. First elastic element; 111. Rotating part; 112. Second cam structure; 113. Bracket; 114. Second elastic element; 115. First positioning post; 116. First pin; 117. First pin hole; 118. Third pin hole; 119. Inner side; 120. Outer side; 121. Shaft part; 1 22. Stop; 123. Slot; 124. Connecting part; 125. Guide wing; 126. First guide block; 127. Second guide block; 128. First guide arc surface; 129. Second guide arc surface; 130. First groove; 131. Insertion protrusion; 132. Guide groove; 133. Second swing arm; 134. Second pin; 135. Second pin hole; 136. Limiting groove; 137. Slider; 138. Spiral groove; 139. Spiral protrusion; 140. Synchronous swing arm; 141. Snap ring; 142. Arc surface; 143. Synchronous curved surface;

[0131] 200. Display screen; 201. First part; 202. Second part; 203. Foldable part;

[0132] 301, First subshell; 302, Second subshell. Detailed Implementation

[0133] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0134] It should be understood that "multiple" as mentioned in this application refers to two or more. In the description of this application, unless otherwise stated, " / " indicates "or," for example, A / B can mean A or B; "and / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist, for example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, to facilitate a clear description of the technical solutions of this application, the terms "first," "second," etc., are used to distinguish identical or similar items with essentially the same function and effect. Those skilled in the art will understand that the terms "first," "second," etc., do not limit the quantity or execution order, and that "first," "second," etc., do not necessarily imply differences.

[0135] Please see Figures 1 to 3 , Figure 1 This is a schematic diagram of the electronic device provided in the embodiment of this application in its unfolded state. Figure 2 This is a schematic diagram of the electronic device provided in the embodiments of this application in a semi-deployed state. Figure 3 This is a schematic diagram of the structure of the electronic device provided in the embodiment of this application in a folded state.

[0136] In one or more embodiments, this application provides an electronic device, which may be a foldable electronic device. The electronic device includes a housing and a pivot mechanism 100. The housing includes a first sub-housing 301 and a second sub-housing 302, which are respectively connected to the pivot mechanism 100. The first sub-housing 301 and the second sub-housing 302 are rotatable relative to each other through the pivot mechanism 100. Exemplary electronic devices may be mobile phones, tablet computers, laptops, or e-readers.

[0137] In this embodiment, taking a mobile phone as an example, the electronic device further includes a display screen 200, which can be a flexible display screen. The display screen 200 is connected to a first sub-shell 301 and a second sub-shell 302. The first sub-shell 301 and the second sub-shell 302 can include the mid-frame of the mobile phone.

[0138] For ease of description in the following embodiments, an XYZ Cartesian coordinate system is established for the electronic device in its unfolded state. The length direction of the electronic device is defined to be parallel to the X-axis, the width direction to be parallel to the Y-axis, and the thickness direction to be parallel to the Z-axis. The length direction of the rotating shaft mechanism 100 is parallel to the Y-axis. It is understood that the coordinate system settings of the electronic device can be flexibly configured according to actual needs, and are not specifically limited here.

[0139] See Figure 1 and Figure 2 As shown, Figure 1 The unfolding angle α of the foldable electronic device shown is 180 degrees. Figure 3 The unfolding angle β of the foldable electronic device shown is 90 degrees. The state of the electronic device is the same as the state of the hinge mechanism 100, that is, when the foldable electronic device is in the folded state, the hinge mechanism 100 is also in the folded state; when the foldable electronic device is in the semi-unfolded state, the hinge mechanism 100 is also in the semi-unfolded state; when the foldable electronic device is in the unfolded state, the hinge mechanism 100 is also in the unfolded state.

[0140] It should be noted that the angles illustrated in the embodiments of this application are allowed to have slight deviations. For example, Figure 1The unfolding angle α of the foldable electronic device shown is 180 degrees. This means that α can be 180 degrees, or approximately 180 degrees, such as 170 degrees, 175 degrees, 185 degrees, and 190 degrees. Figure 2 The unfolding angle β of the foldable electronic device shown is 90 degrees, meaning that β can be 90 degrees, or approximately 90 degrees, such as 80 degrees, 85 degrees, 95 degrees, or 100 degrees. The angles illustrated in the following text can be understood in the same way.

[0141] Please combine Figure 1 and Figure 2 As shown, the first sub-shell 301 and the second sub-shell 302 are respectively mounted on both sides of the rotating shaft mechanism 100. The display screen 200 includes a first part 201, a second part 202, and a foldable part 203. The foldable part 203 is located between the first part 201 and the second part 202, and the foldable part 203 can be bent around an axis parallel to the AA direction. In this embodiment, the display screen 200 adopts a flexible display screen, such as an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode (MOLED) display screen, a micro organic light-emitting diode (MicroOLED) display screen, a quantum dot light-emitting diode (QLED) display screen, etc.

[0142] The foldable electronic device folds by bringing the first sub-shell 301 and the second sub-shell 302 closer together. When the foldable electronic device is in the folded state, the foldable portion 203 of the display 200 bends, and the first portion 201 and the second portion 202 are positioned opposite each other. At this time, the display 200 is located between the first sub-shell 301 and the second sub-shell 302.

[0143] Please refer to the following: Figure 2The first sub-shell 301 and the second sub-shell 302 rotate relative to each other via the pivot mechanism 100. By bringing the first sub-shell 301 and the second sub-shell 302 closer together, the display screen 200 gradually folds, causing the foldable electronic device to move from an unfolded state to a semi-unfolded state. When the foldable electronic device is in the semi-unfolded state, the first sub-shell 301 and the second sub-shell 302 unfold to an angle of β, and the first part 201 and the second part 202 fold relative to each other, causing the foldable part 203 to fold. At this time, the angle between the first part 201 and the second part 202 is β.

[0144] Please combine Figure 2 and Figure 3 As shown, the first sub-shell 301 and the second sub-shell 302 rotate relative to each other through the pivot mechanism 100. The relative proximity of the first sub-shell 301 and the second sub-shell 302 causes the display screen 200 to fold further until the foldable electronic device is completely folded.

[0145] When the electronic device is in a flattened state, the angle between the first sub-shell 301 and the second sub-shell 302 is α+. The foldable portion 203 unfolds, and the first portion 201 and the second portion 202 unfold relative to each other. At this time, the angles between the first portion 201, the second portion 202, and the foldable portion 203 are also α, giving the display screen 200 a large display area, enabling a large-screen display for the foldable electronic device and improving the user experience.

[0146] It should be noted that both included angle α and included angle β are the included angles between the first sub-shell 301 and the second sub-shell 302. These are used only to distinguish the different angles between the first sub-shell 301 and the second sub-shell 302 in different states of the foldable electronic device. Specifically, included angle α refers to the angle between the first sub-shell 301 and the second sub-shell 302 when the foldable electronic device is in its unfolded state; included angle β refers to the angle between the first sub-shell 301 and the second sub-shell 302 when the foldable electronic device is in its semi-unfolded state.

[0147] In the embodiments of this application, see Figures 1 to 3 As shown, the phone can be an inward-folding screen phone. When folded, the display screen 200 is hidden, while the first sub-shell 301 and the second sub-shell 302 are exposed. In this way, the display screen 200 is protected by the first sub-shell 301 and the second sub-shell 302. Of course, it is understandable that the phone can also be an outward-folding screen phone, in which the display screen is exposed when folded.

[0148] In related technologies, the hinge mechanism of foldable electronic devices has a damping mechanism to ensure a smooth transition during unfolding and folding, reducing impact and shaking, and maintaining the opening and closing feel and state retention during rotation. However, as electronic devices become increasingly thinner and lighter, the damping force provided by the damping mechanism may become insufficient, thus affecting the opening and closing feel and the effectiveness of state retention.

[0149] To address these issues, this application also provides a rotating shaft mechanism 100. The rotating shaft mechanism 100 provided in this application embodiment is described in detail below.

[0150] Figure 4 This is a partial structural schematic diagram of the first type of rotating shaft mechanism 100 provided in the embodiments of this application. Figure 5 yes Figure 4 Another structural schematic diagram of the rotating shaft mechanism 100; combined with Figure 4 and Figure 5 As shown in the embodiment of this application, the rotating shaft mechanism 100 includes a base 101 and an opening and closing assembly. The opening and closing assembly includes two swing arm assemblies, which are located on opposite sides of the base 101. The swing arm assembly includes a first swing arm 102. The first swing arm 102 is capable of rotating relative to the base 101 between an unfolded position and a folded position.

[0151] Combination Figure 4 and Figure 5 As shown, in some embodiments, the base 101 can provide support for the opening and closing components to facilitate the unfolding or folding of the electronic device. The number of opening and closing components in the pivot mechanism 100 can be one or more. When there are multiple opening and closing components, the number can be two, three, or four, depending on actual needs, and this application does not limit this. The opening and closing components mainly serve to dampen the unfolding or folding of the electronic device. One of the swing arm components of the opening and closing components is located on one side of the base 101, and the other swing arm component is located on the opposite side of the base 101. The direction from one side of the base 101 to the other side of the base 101 is perpendicular to the length direction of the base 101, and the length direction of the base 101 is parallel to the length direction of the pivot mechanism 100.

[0152] Combination Figure 4 and Figure 5As shown, in some embodiments, the rotating shaft mechanism 100 further includes a connecting member 103. The first sub-shell 301 is connected to the rotating shaft mechanism 100 via the connecting member 103, and the second sub-shell 302 is also connected to the rotating shaft mechanism 100 via the connecting member 103. The connecting member 103 and the first sub-shell 301 can be integrally formed, or they can be fixedly connected by welding or screws. The connecting member 103 and the second sub-shell 302 can be integrally formed, or they can be fixedly connected by welding or screws. The first sub-shell 301 and the second sub-shell 302 are located on opposite sides of the base 101.

[0153] Combination Figure 4 and Figure 5 As shown, in some embodiments, the base 101 includes a central beam 104 and a support plate 105, with the central beam 104 and the support plate 105 fixedly connected. For example, the support plate 105 and the central beam 104 can be fixedly connected by welding or screws. When the electronic device is in the unfolded state, the support plate 105 and the central beam 104 are stacked in the thickness direction of the electronic device, which can improve the rigidity of the base 101 and ensure the structural strength of the base 101.

[0154] Combination Figure 4 and Figure 5As shown, in some embodiments, the base 101 may include multiple support plates 105 and multiple center beams 104. The multiple support plates 105 are distributed along the length direction of the rotating shaft mechanism 100. In two adjacent support plates 105, the end of one support plate 105 is connected to the end of the other support plate 105. For example, the ends of one support plate 105 and the ends of the other support plate 105 are fixedly connected by screws. The connection of the ends of two adjacent support plates 105 avoids deformation caused by uneven stress on a single support plate 105, improving the stability of the overall structure. Furthermore, the assembly of multiple support plates 105 facilitates the assembly of the opening and closing components. The multiple center beams 104 are distributed along the length direction of the rotating shaft mechanism 100. In two adjacent center beams 104, the end of one center beam 104 is connected to the end of the other center beam 104. For example, the ends of one center beam 104 and the ends of the other center beam 104 are fixedly connected by screws. The ends of two adjacent middle beams 104 are connected, which avoids deformation caused by uneven stress on a single middle beam 104 and improves the stability of the overall structure. Furthermore, the assembly of multiple middle beams 104 facilitates the assembly of the opening and closing components. It should be noted that the length of each support plate 105 can be the same, or all can be different, or some support plates 105 can have the same length; this application does not impose a specific limitation. Similarly, the length of each middle beam 104 can be the same, or all can be different, or some middle beams 104 can have the same length; this application does not impose a specific limitation. The length direction of the support plate 105 is parallel to the length direction of the rotating shaft mechanism 100, and the length direction of the middle beam 104 is parallel to the length direction of the rotating shaft mechanism 100.

[0155] Figure 6 yes Figure 5 A magnified schematic diagram of the local structure at point A; combined with Figure 5 and Figure 6 As shown, in some embodiments, the pivot mechanism 100 further includes a door panel 106. When the electronic device is in the unfolded state, the door panel 106 can provide support for the foldable portion 203 of the display screen 200 to ensure its flatness. Door panels 106 are respectively provided on opposite sides of the base 101. The door panel 106 is rotatably connected to the connector 103. For example, the door panel 106 has a first arcuate portion 107, and the connector 103 has a first arcuate groove 108. In this way, the first arcuate portion 107 extends into the first arcuate groove 108 to realize the rotatable connection between the door panel 106 and the connector 103. And since the first arcuate surface and the first arcuate groove 108 are in surface-to-surface contact, a low-pair connection between the door panel 106 and the connector 103 is also realized.

[0156] Figure 7 yes Figure 4 A structural schematic diagram of the rotating shaft mechanism 100 from another perspective; see also Figure 7 As shown in the embodiment of this application, the opening and closing assembly further includes a first cam structure 109; the swing arm assembly further includes a first elastic element 110. The first swing arm 102 includes a rotating part 111, which is rotatably connected to the base 101. The first swing arm 102 also includes a second cam structure 112, which is connected to the rotating part 111. The second cam structure 112 cooperates with the first cam structure 109. When the first swing arm 102 rotates relative to the base 101, the first cam structure 109 and the second cam structure 112 rotate relative to each other, so that the first elastic element 110 can be compressed. In this way, the compression of the first elastic element 110 provides damping for the rotation of the first swing arm 102 relative to the base, thereby ensuring the opening and closing feel and the effect of maintaining the state of the electronic device.

[0157] See Figure 7 As shown, in some embodiments, the opening and closing assembly includes a plurality of first cam structures 109; the swing arm assembly includes a plurality of first elastic elements 110, the first swing arm 102 includes a plurality of rotating parts 111, and the first swing arm 102 includes at least three second cam structures 112. When a second cam structure 112 and a first cam structure 109 cooperate, a cam group can be formed. Thus, each swing arm assembly constitutes multiple cam groups. After the first swing arm 102 rotates relative to the base 101, the first cam structure 109 and the second cam structure 112 rotate relative to each other, which can compress the first elastic element 110. The elastic force of the first elastic element 110 acts on the cam group to provide a damping force opposite to the rotation direction of the first swing arm 102. This allows the first swing arm 102 to be suspended at a position between the unfolded state and the folded state, so that the electronic device can be unfolded at a suitable angle for user convenience. Since the first swing arm 102 has three or more second cam structures 112, the swing arm assembly can form at least three or more cam groups, thereby compressing multiple first elastic elements 110 to increase the damping force on the first swing arm 102, thus ensuring the opening and closing feel of the electronic device and the effect of maintaining its state. In addition, compared with related technologies, the rotating shaft mechanism 100 in this application embodiment adds multiple first cam structures 109, multiple second cam structures 112 and multiple first elastic elements 110 in the same space, which can provide sufficient damping force in a small space to ensure opening and closing feel and hovering effect, and is easy to assemble.

[0158] See Figure 7As shown, in some embodiments, the first cam structure 109 can be an axial cam, and the second cam structure 112 can be an axial cam. When the first cam structure 109 and the second cam structure 112 cooperate, and the first cam structure 109 rotates together with the first rocker arm 102 around an axis parallel to the length direction of the rotating shaft mechanism 100, the second cam structure 112 and the first cam structure 109 will move relative to each other in the length direction of the rotating shaft mechanism 100. In the length direction of the rotating shaft mechanism 100, the first elastic element 110 is disposed on the path of relative movement between the second cam structure 112 and the first cam structure 109, thus enabling compression of the first elastic element 110. The first elastic element 110 can be a spring or an elastic body; the spring can be a helical spring or a disc spring. The number of first cam structures 109 corresponding to the rocker arm assembly can be 3, 4, or 5, etc., which can be determined according to actual needs; while the number of first elastic elements 110 in the rocker arm assembly can be 2, 3, or 4, which can be determined according to actual needs. The number of rotating parts 111 in the first rocker arm 102 can be 2, 3, or 4, depending on actual needs. The number of second cam structures 112 in each rocker arm assembly is equal to the number of corresponding first cam structures 109, so that multiple second cam structures 112 in each rocker arm assembly can be matched one-to-one with multiple first cam structures 109 to form multiple cam groups.

[0159] Figure 8 yes Figure 4 A structural schematic diagram of the rotating shaft mechanism 100 from another perspective, combined with... Figure 7 and Figure 8 As shown, in some embodiments, multiple rotating parts 111 are spaced apart along the length of the rotating shaft mechanism 100, and each rotating part 111 has two opposing end faces. At least one of the opposing end faces of the rotating part 111 is fixedly connected to a second cam structure 112, which is fixed to the end face of the rotating part 111. When the rotating part 111 rotates, the second cam structure 112 can rotate relative to the first cam structure 109, thereby compressing the first elastic member 110. For example, the first rocker arm 102 has two rotating parts 111, which are spaced apart, thus forming a gap space between the two rotating parts 111 in the length of the rotating shaft mechanism 100. The connection between the second cam structure 112 and the rotating part 111 can be welding or forming an integral structure using a molding process. This reduces the number of parts and improves the stability of the connection between the second cam structure 112 and the rotating part 111, ensuring that the second cam structure 112 can rotate together with the rotating part 111.

[0160] Figure 9 This is a schematic diagram of the opening and closing component in an embodiment of this application; Figure 10 yes Figure 9 Another structural diagram of the opening and closing components; combined with Figure 9 and Figure 10 As shown, the first swing arm 102 in the opening and closing assembly includes three second cam structures 112; the first swing arm 102 includes two rotating parts 111, one of which has a second cam structure 112 fixedly connected to each of its two opposite end faces, and the other has a second cam structure 112 fixedly connected to one of its two opposite end faces. Distributing the three second cam structures 112 on the two rotating parts 111 helps reduce the number of rotating parts 111; in addition, the fixed connection of the second cam structure 112 to each of the two end faces of one rotating part 111 ensures more uniform force transmission when the first swing arm 102 moves, avoiding excessive torsional torque caused by excessive force on one side, thereby reducing structural deformation and improving the reliability and service life of the mechanical system.

[0161] Combination Figure 9 and Figure 10 As shown, in some embodiments, a first elastic element 110 is provided between two adjacent rotating parts 111 in the first swing arm 102 along the length direction of the rotating shaft mechanism 100; at least one rotating part 111 has a first elastic element 110 provided on each of its opposite sides along the length direction of the rotating shaft mechanism 100. Providing a first elastic element 110 between two rotating parts 111 allows the second cam structure 112 on the rotating part 111 to cooperate with the first cam structure 109, which helps to double the compression of the first elastic element 110, thereby improving the damping effect on the first swing arm 102. Furthermore, having a first elastic element 110 on each of the opposite sides of a rotating part 111 allows the two first elastic elements 110 to apply force to the rotating part 111, which also helps to improve the damping effect on the first swing arm 102. For example, when there are three cam groups in each swing arm assembly, the number of first elastic elements 110 in each swing arm assembly can be two, so that in each swing arm assembly: one rotating part 111, one first elastic element 110, another rotating part 111 and another first elastic element 110 are arranged sequentially along the length direction of the rotating shaft mechanism 100.

[0162] Combination Figure 9 and Figure 10As shown, in some embodiments, the opening and closing assembly further includes multiple supports 113, which are spaced apart along the length of the rotating shaft mechanism 100. Each support 113 can move relative to the base 101 along the length of the rotating shaft mechanism 100. Using multiple supports 113 distributed along the length of the rotating shaft mechanism 100 makes the movement of the opening and closing assembly smoother. Each of the opposite ends of the support 113 is connected to a first cam structure 109. The first cam structures 109 at each opposite end of the support 113 respectively cooperate with second cam structures 112 on the rotating parts 111 of the first swing arms 102 of the two swing arm assemblies. Thus, with the first cam structures 109 connected to each end of the support 113 and corresponding to the second cam structures 112 of the two swing arm assemblies, the opposite ends of the support 113 can move synchronously, thereby achieving smooth overall movement of the support 113. Furthermore, the connection of the first cam structures 109 to each end of the support 113 enables the linkage of the two swing arm assemblies. For example, the two opposite ends of the bracket 113 can be the two ends of the length direction of the bracket 113, and the length direction of the bracket 113 is perpendicular to the length direction of the rotating shaft mechanism 100; the bracket 113 and the first cam structure 109 can be fixedly connected by welding, or they can be formed into an integral structure by an integral molding process. By fixing the bracket 113 and the first cam structure 109, it can be ensured that the first cam structure 109 and the second cam structure 112 can rotate relative to each other. In one of the swing arm assemblies, the second cam structure 112 on the first swing arm 102 engages with the first cam structure 109 at one end of the bracket 113. In the other swing arm assembly, the second cam structure 112 on the first swing arm 102 engages with the first cam structure 109 at the opposite end of the bracket 113. In this way, when the first swing arm 102 rotates relative to the base 101, the bracket 113 ensures that the second cam structure 112 does not rotate with the first cam structure 109, thereby realizing the relative rotation between the first cam structure 109 and the second cam structure 112, and enabling the bracket 113 to move along the length direction of the rotating shaft mechanism 100.

[0163] Combination Figure 9 and Figure 10As shown, in some embodiments, in the length direction of the rotating shaft mechanism 100, there are two supports 113 located between two adjacent rotating parts 111 in the first swing arm 102; a first elastic element 110 is provided between the two supports 113 located between two adjacent rotating parts 111 in the first swing arm 102, so that the damping force on the two first swing arms 102 in the opening and closing assembly can be evenly distributed when they rotate using the two supports 113. For example, among the two supports 113 located between two adjacent rotating parts 111 in the first swing arm 102, one support 113 abuts against one end of the first elastic member 110, and the other support 113 abuts against the other end of the first elastic member 110; when the first swing arm 102 rotates relative to the base 101, the two supports 113 between the two rotating parts 111 of the first swing arm 102 move in opposite directions, thereby compressing the first elastic member 110 between the two supports 113; in addition, since the two supports 113 can compress both ends of the first elastic member 110 at the same time, the damping force on the first swing arm 102 can be greatly increased, thus improving the damping effect.

[0164] Combination Figure 9 and Figure 10 As shown, in some embodiments, the opening and closing assembly further includes a second elastic element 114. A second elastic element 114 is also provided between two supports 113 located between two adjacent rotating parts 111 in the first swing arm 102. Adding the second elastic element 114 allows the first elastic element 110 to cooperate with the second elastic element 114, which helps to increase the damping force and improve the damping effect. For example, the second elastic element 114 can be a spring or an elastic body; the spring can be a helical spring or a disc spring; the number of second elastic elements 114 can be one or more. When there are multiple second elastic elements 114, they are arranged side-by-side in a direction perpendicular to the length direction of the base 101. This application embodiment uses a spring as an example to illustrate this specifically. A first positioning post 115 is fixed on a bracket 113 located between two adjacent rotating parts 111 in the first swing arm 102. The first positioning post 115 and the bracket 113 can be fixedly connected by welding or by an integral molding process to make the first positioning post 115 and the bracket 113 an integral structure. One end of the second elastic member 114 is sleeved on the first positioning post 115 on one bracket 113, and the other end of the second elastic member 114 is sleeved on the first positioning post 115 on the other bracket 113. This ensures that the second elastic member 114 can be compressed and will not come out between the two brackets 113. It should be noted that there is a gap between the free ends of the first positioning posts 115 on the two brackets 113. This ensures that when the distance between the two brackets 113 becomes smaller, the two first positioning posts 115 will not collide.

[0165] Combination Figure 9 and Figure 10 As shown, in some embodiments, the swing arm assembly further includes a first pin 116, and the rotating part 111 has a first pin hole 117 through which the first pin 116 passes. The first pin 116 is connected to the base 101 so that the rotating part 111 and the base 101 are rotatably connected. By utilizing the first pin 116 passing through the first pin hole 117 on the rotating part 111, reliable rotational movement between the rotating part 111 and the base 101 can be achieved, thereby improving the stability of the movement of the first swing arm 102. This also facilitates disassembly and maintenance, improving the maintainability of the rotating shaft mechanism 100. For example, the first pin 116 can be made of metal; when the first elastic element 110 is a spring, the spring is sleeved on the first pin 116; the two ends of the bracket 113 are respectively provided with third pin holes 118, and the first pin 116 is also inserted into the third pin holes 118, so that the two ends of the bracket 113 are respectively inserted with the first pin 116. After the first pin 116 is installed on the base 101, the bracket 113 can move along the axial direction of the first pin 116, and the first pin 116 can also be prevented from rotating around the axis of the first pin 116; in addition, when the first pin 116 passes through the rotating part 111 of the first swing arm 102 and the bracket 113, the second cam structure 112 on the rotating part 111 and the first cam structure 109 on the bracket 113 can be engaged.

[0166] Combination Figure 9 and Figure 10As shown, in some embodiments, in the longitudinal direction of the pivot mechanism 100, at least one rotating portion 111 of the first swing arm 102 has supports 113 on opposite sides, which helps to improve the damping effect of the first swing arm 102. For example, one rotating portion 111 of the first swing arm 102 has supports 113 on opposite sides, and a second cam structure 112 is also fixed to each opposite side of the rotating portion 111. In the longitudinal direction of the pivot mechanism 100, the rotating portion 111 and the two supports 113 located on both sides of the rotating portion 111 are located between two first elastic members 110. That is, in the longitudinal direction of the pivot mechanism 100, one first elastic member 110, one support 113, one rotating portion 111 of the first swing arm 102, another support 113, another first elastic member 110, another support 113, and another rotating portion 111 of the first swing arm 102 are arranged in this order. For ease of description, when the first swing arm 102 includes two rotating parts 111, in the length direction of the rotating shaft mechanism 100, the opposite side of the two rotating parts 111 can be referred to as the inner side 119 of the rotating part 111, and the other side of the rotating part 111 can be referred to as the outer side 120 of the rotating part 111; thus, the inner side 119 and the outer side 120 of the rotating part 111, which is provided with two second cam structures 112, each have a bracket 113. The rotation axis of the first swing arm 102 is parallel to the axis of the first pin 116. The first swing arm 102 can rotate around the first pin 116, thereby realizing the rotation of the first swing arm 102 relative to the base 101. When the first swing arm 102 rotates, the rotating part 111 with two second cam structures 112 will drive the second cam structures 112 fixed on itself to rotate. Under the action of the first cam structure 109, the rotating part 111 is translated axially along the first pin 116 relative to the brackets 113 on both sides, thereby compressing the first elastic members 110 on both sides of the rotating part 111.

[0167] It should be noted that in some other possible implementations, when the rotating part 111 of the first swing arm 102 has a second cam structure 112 on each of its opposite sides, a bracket 113 may be provided on each of the opposite sides of the rotating part 111.

[0168] Combination Figure 9 and Figure 10As shown, in some embodiments, the first pin 116 includes a shaft portion 121 and a stop portion 122. The stop portion 122 and the shaft portion 121 are integrally formed. The stop portion 122 abuts against the first elastic member 110, thus providing a stop for the first elastic member 110, which facilitates the compression of the first elastic member 110 and ensures that the first swing arm 102 will not accidentally displace or fall off during movement. Since the stop portion 122 and the shaft portion 121 are integrally formed, additional parts can be reduced, assembly complexity can be lowered, and the overall stability of the first pin 116 can be improved. For example, the stop portion 122 and the shaft portion 121 can be integrally formed using a one-piece molding process to achieve a fixed connection between the stop portion 122 and the shaft portion 121; the stop portion 122 can be annular, while the shaft portion 121 passes through the center of the stop portion. The stop portion 122 is located near one end of the shaft portion 121 and away from the other end of the shaft portion 121; the first elastic member 110 on the outer side 120 of the rotating portion 111 is located between the bracket 113 on the outer side 120 of the rotating portion 111 and the stop portion 122, so that when the bracket 113 on the outer side 120 of the rotating portion 111 moves, the first elastic member 110 on the outer side 120 of the rotating portion 111 can be compressed.

[0169] It should be noted that in some other possible embodiments, the stop part 122 and the shaft part 121 can also be detachably fixedly connected. This allows for adjustment of the distance between the stop part 122 and the bracket 113 on the outer side 120 of the rotating part 111, thereby adjusting the compression of the first elastic element 110 and adjusting the damping effect. The connection between the stop part 122 and the shaft part 121 can be a snap-fit ​​connection or a threaded connection. In one possible embodiment, the stop part 122 can have an internal thread, and the shaft part 121 can have an external thread. The stop part 122 and the shaft part 121 are threadedly connected. After adjusting the compression of the first elastic element 110, the stop part 122 and the shaft part 121 can be fixed by welding.

[0170] Combination Figure 9 and Figure 10 As shown, in some embodiments, the shaft portion 121 also has a slot 123, which is located near the opposite end of the shaft portion 121. This allows the rotating portion 111, the bracket 113, and the first elastic member 110 to be positioned between the slot 123 and the stop portion 122, thus enabling the opening and closing assembly to be mounted on the base 101. For example, the slot 123 may contain a retaining spring 141, which allows the rotating portion 111, the bracket 113, and the first elastic member 110 to pass through the shaft portion 121 of the first pin 116. It should be noted that in some other possible embodiments, the shaft portion 121 may not have a slot 123, and the retaining spring 141 may not be provided.

[0171] Figure 11 This is a schematic diagram of the structure of the first swing arm 102 in the first form of the embodiments of this application; Figure 12 yes Figure 11 Another structural schematic diagram of the first swing arm 102; combined with Figure 11 and Figure 12 As shown, in some embodiments, the first swing arm 102 further includes a first guide block 126 and a second guide block 127. The first guide block 126 and the second guide block 127 are spaced apart along the length of the rotating shaft mechanism 100. The cooperation of the first guide block 126 and the second guide block 127 enables control of the door panel 106. For example, the length extension direction of the first guide block 126 is parallel to the length direction of the rotating shaft mechanism 100, and the length extension direction of the second guide block 127 is perpendicular to the length direction of the rotating shaft mechanism 100. Both the first guide block 126 and the second guide block 127 have an arc surface 142 to facilitate cooperation with the door panel 106. It should be noted that... Figure 7 The rotating shaft mechanism 100 shown can be adopted Figure 11 The first swing arm 102 shown is illustrated.

[0172] Combination Figure 11 and Figure 12 As shown, in some embodiments, the first swing arm 102 further includes a connecting portion 124. Multiple rotating portions 111 of the first swing arm 102 are respectively connected to the connecting portion 124. For example, the rotating portions 111 and the connecting portion 124 can be fixedly connected. For instance, the rotating portions 111 and the connecting portion 124 can be fixedly connected by welding, or the rotating portions 111 and the connecting portion 124 can be integrally formed using a molding process. The first swing arm 102 can have two rotating portions 111, one of which is connected to two second cam structures 112, and the other rotating portion 111 is connected to one second cam structure 112.

[0173] Combination Figure 11 and Figure 12 As shown, in some embodiments, the first guide block 126 and the second guide block 127 are fixedly connected to the connecting portion 124. The first guide block 126 and the connecting portion 124 are integrally formed using a molding process; the second guide block 127 and the connecting portion 124 are integrally formed using a molding process; the rotating portion 111 and the connecting portion 124 form a whole, and the rotating portion 111 itself is a single part. This allows the first swing arm 102 to be a single integral structure, which is beneficial for assembly and manufacturing.

[0174] Combination Figure 11 and Figure 12As shown, in some embodiments, the first swing arm 102 further includes a guide wing 125, which cooperates with the connector 103 to drive the first swing arm 102 to move via the connector 103. For example, the first swing arm 102 may have two guide wings 125, which are spaced apart along the length of the rotating shaft mechanism 100. Along the length of the rotating shaft mechanism 100, the first guide block 126 and the second guide block 127 are located on the same side of one of the guide wings 125.

[0175] Figure 13 This is a schematic diagram of the structure when the opening and closing components, door panel 106 and base 101 are assembled together in the embodiments of this application; Figure 14 yes Figure 13 A magnified schematic diagram of the local structure at point B; combined with Figure 13 and Figure 14 As shown, in some embodiments, the door panel 106 has a first guide arc surface 128 and a second guide arc surface 129. A first guide block 126 cooperates with the first guide arc surface 128, and the second guide arc surface 129 cooperates with the second guide block 127. Along the length of the rotating shaft mechanism 100, the first guide arc surface 128 and the second guide arc surface 129 are spaced apart. This cooperation between the first guide block 126 and the first guide arc surface 128, and between the second guide block 127 and the second guide arc surface 129, improves the stability of the door panel 106's movement and the precision of its movement control. For example, the first guide arc surface 128 can be concave, while the second guide arc surface 129 can be convex. Specifically, the first guide arc surface 128 refers to a structure whose length extension direction is arc-shaped and whose surface is curved; the curved surface can be cylindrical. When the pivot mechanism 100 is in the unfolded state, the arc surface 142 of the second guide block 127 contacts the second guide arc surface 129, and the arc surface 142 of the first guide block 126 can be separated from the first guide arc surface 128; during the process of the pivot mechanism 100 switching from the unfolded state to the folded state, the arc surface of the first guide block 126 can contact the first guide arc surface 128, thereby achieving precise control of the movement of the door panel 106.

[0176] Figure 15 This is a schematic diagram of the structure when the opening and closing component is assembled with the base 101 in an embodiment of this application. See [link / reference]. Figure 15As shown in some embodiments, the two swing arm assemblies in the opening and closing assembly are symmetrically arranged about the center line O of the base 101. The length direction of the center line O of the base 101 is parallel to the length direction of the rotating shaft mechanism 100, which helps to improve the reliability and stability of the folding and unfolding of the electronic device. The first swing arm 102 has two rotating parts 111, one of which is connected to two second cam structures 112. The inner side 119 and the outer side 120 of the rotating part 111 are respectively connected to a second cam structure 112. Another rotating part 111 is connected to a second cam structure 112, which is located on the inner side 119 of the rotating part 111. The outer side 120 of the rotating part 111 does not have the second cam structure 112. The end face of the outer side 120 of the rotating part 111 with the second cam structure 112 can abut against the end face of the middle beam 104 of the base 101. Since the two surfaces abut against each other, a certain damping effect can be achieved. To improve the damping effect, a friction structure can be provided on the end face of the outer side 120 of the rotating part 111, and a friction structure can be provided on the end face of the middle beam 104. For example, the two end faces can be roughened to increase friction, or friction plates can be fixed to improve the damping effect. It should be noted that... Figure 15 Too Figure 4 A partial structural diagram of the rotating shaft mechanism 100 in the diagram.

[0177] Figure 16 This is a diagram showing the state of the rotating part 111 and the middle beam 104 in this embodiment of the application when they are not assembled; see also Figure 16 As shown, in some other embodiments, the end face of the middle beam 104 may have a first groove 130, and the end face of the outer side 120 of the rotating part 111 has an insertion protrusion 131. The insertion protrusion 131 is used to insert into the first groove 130. The first groove 130 is frustum-shaped, and the insertion protrusion 131 is frustum-shaped, so as to realize the first groove 130 and the insertion protrusion 131 cooperating. After the rotating part 111 and the middle beam 104 are engaged, under the action of the first elastic member 110 in the opening and closing assembly, the insertion protrusion 131 on the rotating part 111 extends into the first groove 130, and the surface of the insertion protrusion 131 contacts the groove wall of the first groove 130. Under the action of the first elastic member 110, the rotation of the rotating part 111 relative to the middle beam 104 can be damped, thereby improving the damping effect on the first swing arm 102. It is understandable that, in order to improve the damping effect, a friction structure can be provided on the surface of the insertion protrusion 131 and the groove wall of the first groove 130. For example, the surface of the insertion protrusion 131 and the groove wall of the first groove 130 can be roughened to improve the friction, or a friction plate can be fixed to improve the damping effect.

[0178] It should be noted that, Figure 16The second cam structure 112 is not shown on the end face of the inner side 119 of the rotating part 111. In some other possible embodiments, the insertion protrusion 131 may be provided on the end face of the middle beam 104, and the first groove 130 may be provided on the end face of the outer side 120 of the rotating part 111.

[0179] Figure 17 yes Figure 4 Another structural schematic diagram of the rotating shaft mechanism 100. Figure 18 yes Figure 17 A magnified schematic diagram of the local structure at point C; combined with Figure 17 and Figure 18 As shown, in some embodiments, the connector 103 has a guide groove 132, and the guide wing 125 is confined within the guide groove 132, so that the connector 103 and the first swing arm 102 are slidably connected, thereby realizing the unfolding or folding of the electronic device. It can be understood that the guide groove 132 can also be provided on the first swing arm 102, and the connector 103 includes the guide wing 125, so that the guide groove 132 on the first swing arm 102 and the guide wing 125 of the connector 103 are slidably engaged.

[0180] It should be noted that in some other possible implementations, the way the first swing arm 102 and the connecting member 103 cooperate is not limited to the sliding connection. They can also be connected by a hinge to drive the first swing arm 102 to move. For example, the connecting member 103 may have a connecting shaft, and the first swing arm 102 may have a first shaft hole. The connecting shaft is inserted into the first shaft hole so that the connecting member 103 and the first swing arm 102 are hinged.

[0181] Figure 19 yes Figure 17 A magnified schematic diagram of the local structure at point D; Figure 20 This is a schematic diagram of a portion of the structure of the rotating shaft mechanism 100 in an embodiment of this application; combined with Figure 19 and Figure 20 As shown, in some embodiments, the rotating shaft mechanism 100 further includes a second swing arm 133, which is rotatably connected to the base 101. This allows the second swing arm 133 to cooperate with the first swing arm 102 to achieve folding or unfolding of the rotating shaft mechanism 100. For example, one end of the second swing arm 133 is rotatably connected to the base 101, and the other end of the second swing arm 133 is hinged to the connecting member 103 via a second pin 134. The cooperation between the second swing arm 133 and the base 101 can be achieved by the second swing arm 133 having an arc-shaped structure, and the base 101 having an arc-shaped groove that cooperates with the arc-shaped structure. The arc-shaped structure extends into the arc-shaped groove, thereby achieving both rotatable and sliding connections between the second swing arm 133 and the base 101.

[0182] Figure 21 This is a structural schematic diagram of beam 104 in an embodiment of this application; Figure 22 yes Figure 21 A magnified schematic diagram of the local structure at point E; combined with Figure 20 , Figure 21 and Figure 22 As shown, in some embodiments, the base 101 has a second pin hole 135, and the end of the first pin 116 is inserted into the second pin hole 135 so that the first pin 116 is confined on the base 101. This embedded confining structure, formed by inserting the end of the first pin 116 into the second pin hole 135 of the base 101, is more stable and less prone to loosening or falling off. Furthermore, since the first pin 116 is directly inserted into the base 101, the assembly steps are simplified, the number of parts is reduced, and manufacturing and maintenance costs are lowered. For example, the second pin hole 135 is a blind hole, and the middle beam 104 has a second pin hole 135; in two adjacent middle beams 104, one end of the first pin 116 is inserted into the second pin hole 135 on one middle beam 104, and the other end of the first pin 116 is inserted into the second pin hole 135 on the other middle beam 104. When the second pin hole 135 is a blind hole, it can prevent the first pin 116 from penetrating and causing displacement, thus improving positioning accuracy. It can also enhance connection stability and prevent the first pin 116 from loosening due to vibration or long-term use. It should be noted that in some other possible embodiments, the second pin hole 135 can also be a through hole.

[0183] Combination Figure 20 , Figure 21 and Figure 22 As shown, in some embodiments, one end of the shaft portion 121 of the first pin 116 is inserted into the second pin hole 135 of one of the middle beams 104, and the other end of the shaft portion 121 is inserted into the second pin hole 135 of another middle beam 104. To facilitate the limiting of the retaining ring 141 on the opposite end near the shaft portion 121 in the longitudinal direction of the rotating shaft mechanism 100, the middle beam 104 may have a limiting groove 136. After the shaft portion 121 is inserted into the second pin hole 135, the retaining ring 141 is inserted into the limiting groove 136 to engage with the retaining groove 123 of the shaft portion 121.

[0184] Figure 23 This is a diagram showing the state of the first swing arm 102 and the slider 137 in the embodiment of this application. Figure 24 This is a partial structural schematic diagram of the first swing arm 102 in the second form of the embodiments of this application; Figure 25 This is a schematic diagram of the slider 137 in the embodiments of this application; combined with Figures 23 to 25As shown, in some embodiments, the opening and closing assembly further includes a slider 137. The first swing arm 102 has a helical synchronous surface 143, and the slider 137 cooperates with the synchronous surface 143. When the first swing arm 102 rotates relative to the base 101 between the unfolded position and the folded position, the two first swing arms 102 in the two swing arm assemblies can move synchronously, and the slider 137 can move along the length direction of the rotating shaft mechanism 100. In this way, by using the slider 137 in cooperation with the helical synchronous surface 143, synchronous movement between the two first swing arms 102 can be achieved, thereby achieving synchronous movement between the first sub-shell 301 and the second sub-shell 302. In addition, during the unfolding or folding process of the first swing arm 102, the slider 137 can provide additional guiding function, reduce the shaking of the first swing arm 102 during the movement, and improve the stability of the system. For example, when the opening and closing assembly has a slider 137, one of the rotating parts 111 of the first rocker arm 102 has a spiral groove 138, the groove wall of which is a spiral synchronous curved surface 143; while the slider 137 has a spiral protrusion 139, which cooperates with the spiral groove 138 to achieve synchronous movement between the two first rocker arms 102 in the opening and closing assembly. The number of second cam structures 112 on the rotating part 111 with the spiral groove 138 is one.

[0185] It should be noted that for the two first swing arms 102 of the two swing arm assemblies of the opening and closing assembly, the spiral groove 138 for synchronous movement can be provided only on one rotating part 111 of the first swing arm 102; and the number of second cam structures 112 on the rotating part 111 with the spiral groove 138 can also be two, which is not specifically limited in this application.

[0186] Figure 26 This is a schematic diagram of the structure of the first swing arm 102 in the third form of the embodiments of this application, see [link / reference]. Figure 26As shown, in some other embodiments, a second cam structure 112 is fixedly connected to each of the two end faces of the rotating part 111 of the first swing arm 102, which helps to improve the damping force on the first swing arm 102. For example, the first swing arm 102 includes four second cam structures 112; the first swing arm 102 includes two rotating parts 111, one of which has a second cam structure 112 fixedly connected to each of its two opposite end faces, and the other has a second cam structure 112 fixedly connected to each of its two opposite end faces. Distributing the four second cam structures 112 on the two rotating parts 111 reduces the total number of rotating parts 111 in the first swing arm 102 compared to distributing them on four or three rotating parts 111. Furthermore, the second cam structures 112 are distributed on the end faces of the other two rotating parts 111. This design provides more symmetrical force distribution, making the swing arm more stable during movement, reducing swaying or uneven force distribution, thereby improving the mechanical performance of the system. The four second cam structures 112 can distribute the pressure per unit area, reducing localized excessive wear, improving the durability of the system, and extending its service life.

[0187] Figure 27 This is a partial structural schematic diagram of the rotating shaft mechanism 100 of the second form in the embodiments of this application; Figure 28 yes Figure 27 A magnified schematic diagram of the local structure at point F, wherein, Figure 27 The rotating shaft mechanism 100 shown adopts Figure 26 The first swing arm 102 described herein. Combined with... Figure 26 , Figure 27 and Figure 28 As shown, in some embodiments, a first cam structure 109 is fixed on the base 101. The first cam structure 109 on the base 101 cooperates with a second cam structure 112 on one of the rotating parts 111 of the first swing arm 102. When relative rotation occurs between the first cam structure 109 and the second cam structure 112, the first swing arm 102 can move relative to the base 101 along the length direction of the rotating shaft mechanism 100. Fixing the first cam structure 109 cooperating with the second cam structure 112 on the base 101 can compress the first elastic element 110, which is beneficial to improving the damping force on the first swing arm 102. For example, the base 101 and the first cam structure 109 can be fixedly connected by welding or by forming an integral structure using an integral molding process to achieve a fixed connection between the two. The first cam structure 109 can be fixed to the middle beam 104 of the base 101 or to the support plate 105 of the base 101.

[0188] It should be noted that, Figure 27The rotating shaft mechanism 100 and Figure 7 The main difference of the rotating shaft mechanism 100 is that, Figure 7 The first rocker arm 102 shown has three second cam structures 112, while Figure 27 The first swing arm 102 has four second cam structures 112. In some other possible embodiments, when the first cam structure 109 is fixed on the base 101, the opening and closing assembly may also have a slider 137 for synchronous movement, and correspondingly, the rotating part 111 that cooperates with the first cam structure 109 on the base 101 may have a helical groove 138.

[0189] Figure 29 This is a partial structural schematic diagram of the third type of rotating shaft mechanism 100 in the embodiments of this application; see also Figure 29 As shown, in some embodiments, the rotating shaft mechanism 100 may include a synchronization component, thereby enabling synchronized movement between the first sub-housing 301 and the second sub-housing 302 connected to the rotating shaft mechanism 100. Exemplarily, the synchronization component includes two synchronized swing arms 140, located on opposite sides of the base 101. The synchronization component also includes a slider 137, a first pin 116, a first elastic element 110, a second elastic element 114, a bracket 113, and a first cam structure 109. Each synchronized swing arm 140 also includes a rotating portion 111 and a second cam structure 112. The synchronized swing arm 140 further has a connecting portion 124, a first guide block 126, and a second guide block 127; the connecting portion 124 is connected to the rotating portion 111.

[0190] It should be noted that, in this embodiment, the main difference between the synchronization component and the opening / closing component is that the synchronization component has only one rotating part 111 of the synchronization arm 140, and each of the two opposite ends of the rotating part 111 of the synchronization arm 140 is connected to a second cam structure 112, one of which cooperates with a first cam structure 109 fixed on the base 101; while the opening / closing component has two or more rotating parts 111 of the first arm 102. For the specific structure of each component of the synchronization component, please refer to the detailed description of the relevant structures in the opening / closing component, which will not be repeated here.

[0191] Additionally, it should be noted that in some other possible embodiments, the connecting portion 124 of the synchronous swing arm 140 may include a first sub-part and a second sub-part, which are assembled together and detachably connected, and are not fixed to each other. For example, the first sub-part and the second sub-part may be plugged together, i.e., the first sub-part has a plug and the second sub-part has a slot, the plug is inserted into the slot, and the plug can move along the length direction of the rotating shaft mechanism 100 in the slot; the rotating portion 111 of the synchronous swing arm 140 includes a third sub-part and a fourth sub-part, and the third sub-part is fixedly connected to the first sub-part. Next, the fourth sub-part is fixedly connected to the second sub-part. The third and fourth sub-parts are two independent structures, with one second cam structure 112 fixed to the third sub-part and the other second cam structure 112 fixed to the fourth sub-part. In the length direction of the rotating shaft mechanism 100, the first sub-part can move a set distance relative to the second sub-part. Thus, the first and second sub-parts have a certain amount of movement in the length direction of the rotating shaft mechanism 100, thereby realizing a certain amount of movement between the third and fourth sub-parts of the synchronous swing arm 140. This is beneficial for the synchronization between the two synchronous swing arms 140.

[0192] Figure 30 This is a partial structural schematic diagram of the fourth type of rotating shaft mechanism 100 provided in the embodiments of this application; combined with Figure 28 and Figure 30 As shown, in some embodiments, the rotating shaft mechanism 100 provided in this application includes a base 101 and an opening / closing assembly; the opening / closing assembly includes two swing arm assemblies and at least one first cam structure 109, the two swing arm assemblies are respectively located on opposite sides of the base 101, the swing arm assembly includes a first swing arm 102 and a first elastic element 110, the first swing arm 102 is rotatable relative to the base 101 between an unfolded position and a folded position; wherein, the first swing arm 102 includes at least one rotating part 111, the rotating part 111 rotates relative to the base 101. The first swing arm 102 also includes at least one second cam structure 112, which is connected to the rotating part 111. A first cam structure 109 is fixed on the base 101, and the first cam structure 109 on the base 101 cooperates with one of the second cam structures 112 on the rotating part 111 of the first swing arm 102. When relative rotation occurs between the first cam structure 109 and the second cam structure 112, the first swing arm 102 can move relative to the base 101 along the length direction of the rotating shaft mechanism 100. Fixing a first cam structure 109 on the base 101 helps to reduce the number of parts in the rotating shaft mechanism 100, thereby saving space in the length direction of the rotating shaft mechanism.

[0193] In some embodiments, the number of rotating parts 111 in the first swing arm 102 can be one, two, or three, depending on the actual situation; for example, Figure 28 The first swing arm 102 has two rotating parts 111, while Figure 30 The first swing arm 102 has a rotating part 111. The first cam structure 109 can be fixed to the middle beam 104 of the base 101 or to the support plate 105 of the base 101. The number of first cam structures 109 corresponding to each swing arm assembly can be 1, 2, 3, 4 or 5, etc., which can be determined according to actual needs.

[0194] See Figure 30 As shown, in some other embodiments, in the length direction of the rotating shaft mechanism 100, one of the two opposite end faces of the rotating part 111 is fixed with a second cam structure 112, and the other end face is not fixed with a second cam structure 112. The end face with the second cam structure 112 is connected to the first cam structure 109 on the base 101, which facilitates the fixed connection between the second cam structure 112 on the rotating part 111 and the first cam structure 109 fixed on the base 101.

[0195] See Figure 30 As shown, in some other embodiments, the swing arm assembly includes a first elastic element 110. One end of the first elastic element 110 abuts against the base 101, and the other end of the first elastic element 110 abuts against the other end face of the rotating part 111. Thus, when the first swing arm 102 rotates relative to the base 101, the first swing arm 102 can also move relative to the base 101 along the length direction of the rotating shaft mechanism 100. At the same time as moving, the first elastic element 110 can be compressed to provide damping force to the first swing arm 102 using the first elastic element 110.

[0196] See Figure 30 As shown, in some other embodiments, the swing arm assembly further includes a first pin 116, and when the first elastic element 110 is a spring, the spring is sleeved on the first pin 116. It should be noted that, for Figure 30 The structure of the first pin 116, the rotatable connection between the first swing arm 102 and the base 101, and the installation method between the first pin 116 and the base 101 can be found in the descriptions of the foregoing embodiments, such as [see...]. Figure 20 , Figure 21 and Figure 22 The relevant descriptions will not be repeated here.

[0197] Figure 31 This is a partial structural schematic diagram of the fifth type of rotating shaft mechanism 100 provided in the embodiments of this application. Figure 31 The rotating shaft mechanism 100 in the middle and Figure 30 The main difference in the rotating shaft mechanism 100 is that the two opposite end faces of the rotating part 111 of the first swing arm 102 are respectively fixed with the second cam structure 112, that is, the second cam structure 112 is fixed on one end face and the second cam structure 112 is fixed on the other end face. Figure 31 As shown, the first swing arm 102 has a rotating part 111; the opening and closing assembly also includes a bracket 113, which can move relative to the base 101 along the length direction of the rotating shaft mechanism 100; the two opposite ends of the bracket 113 are respectively connected to a first cam structure 109, and the first cam structures 109 at the opposite ends of the bracket 113 respectively cooperate with the second cam structure 112 on the other end face of the rotating part 111 of the first swing arm 102 of the two swing arm assemblies. One end of the first elastic member 110 abuts against the base 101, and the other end of the first elastic member 110 abuts against the bracket 113; in the length direction of the rotating shaft mechanism 100, the bracket 113 is located between the first elastic member 110 and the rotating part 111, so that the first bracket 113 is used to facilitate the linkage between the two first swing arms 102 in the two swing arm assemblies.

[0198] See Figure 31 As shown, in some other embodiments, the opening and closing assembly further includes a second elastic element 114, and the bracket 113 abuts against the second elastic element 114; the bracket 113 has a first positioning post 115, and the base 101 may also have a first positioning post 115. When the second elastic element 114 is a spring, the two ends of the spring are respectively sleeved on the first positioning post 115 on the bracket 113 and the first positioning post 115 on the base 101. In this way, the first elastic element 110 and the second elastic element 114 cooperate to increase the damping force and improve the damping effect.

[0199] Figure 32 This is a partial structural schematic diagram of the sixth type of rotating shaft mechanism 100 provided in the embodiments of this application. Figure 32 The rotating shaft mechanism 100 in the middle and Figure 31 The main difference in the rotating shaft mechanism 100 is that, Figure 32 The first swing arm 102 of the rotating shaft mechanism 100 has a helical synchronous curved surface 143; the opening and closing assembly of the rotating shaft mechanism 100 also includes a slider 137, which cooperates with the synchronous curved surface 143; when the first swing arm 102 rotates relative to the base 101 between the unfolded position and the folded position, the two first swing arms 102 in the two swing arm assemblies can move synchronously, and the slider 137 can move along the length direction of the rotating shaft mechanism 100. It should be noted that, for Figure 30 The manner in which the first swing arm 102 and the slider 137 cooperate can be found in the description of the foregoing embodiments, such as see... Figure 23 , Figure 24 and Figure 25 The relevant descriptions will not be repeated here.

[0200] Figure 33 This is a partial structural schematic diagram of the seventh type of rotating shaft mechanism 100 provided in the embodiments of this application. Figure 33 The rotating shaft mechanism 100 in the middle and Figure 31 The main difference in the rotating shaft mechanism 100 is that, Figure 33 The first swing arm 102 has two rotating parts 111. One rotating part 111 has a second cam structure 112 fixed on its two opposite end faces, while the other rotating part 111 has no second cam structure 112 on its two opposite end faces. The swing arm assembly includes two first elastic elements 110. In the length direction of the rotating shaft mechanism 100, a first elastic element 110 is provided between two adjacent rotating parts 111 in the first swing arm 102. In the length direction of the rotating shaft mechanism 100, a first elastic element 110 is provided on each of the opposite sides of the other rotating part 111. That is, the rotating part 111 without the second cam structure 112 has a first elastic element 110 on each of its opposite sides. When a first elastic element 110 is provided between two rotating parts 111, the second cam structure 112 on the rotating part 111 cooperates with the first cam structure 109 to double the compression of the first elastic element 110, thereby improving the damping effect on the first swing arm 102. When a first elastic element 110 is provided on opposite sides of a rotating part 111, the two first elastic elements 110 can apply force to the rotating part 111, which is beneficial to improving the damping effect on the first swing arm 102.

[0201] Figure 34 This is a partial structural schematic diagram of the eighth type of rotating shaft mechanism 100 provided in the embodiments of this application. Figure 34 The rotating shaft mechanism 100 in the middle and Figure 33 The main difference in the rotating shaft mechanism 100 is that, Figure 33 In the first swing arm 102, one of the two rotating parts 111 has a second cam structure 112 fixed on each of its two opposite end faces, and the other rotating part 111 has a second cam structure 112 fixed on one end face, while the other opposite end face of the rotating part 111 does not have a second cam structure 112. The opening and closing assembly includes two brackets 113, which are located between the two rotating parts 111 of the first swing arm 102. The first cam structure 109 on the bracket 113 cooperates with the second cam structure 112 on the corresponding rotating part 111. The use of two brackets 113 can further improve the damping effect on the first swing arm 102.

[0202] In the description of this application, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0203] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A rotating shaft mechanism, characterized in that, include: Base; An opening and closing assembly includes two swing arm assemblies and multiple first cam structures. The two swing arm assemblies are respectively located on opposite sides of the base. Each swing arm assembly includes a first swing arm and multiple first elastic elements. The first swing arm is rotatable relative to the base between an unfolded position and a folded position. The first swing arm includes multiple rotating parts, which are rotatably connected to the base. The first swing arm also includes at least three second cam structures, which are connected to the rotating parts and cooperate with the first cam structure. When the first swing arm rotates relative to the base, the first cam structure and the second cam structure rotate relative to each other, so that the first elastic element can be compressed.

2. The rotating shaft mechanism as described in claim 1, characterized in that, Along the length of the rotating shaft mechanism, a plurality of rotating parts are distributed at intervals, and each rotating part has two opposing end faces; At least one of the two opposite end faces of the rotating part is fixedly connected to the second cam structure.

3. The rotating shaft mechanism as described in claim 2, characterized in that, The first swing arm includes three second cam structures and two rotating parts, wherein one of the two opposite end faces of the rotating part is fixedly connected to a second cam structure, and one of the two opposite end faces of the other rotating part is fixedly connected to a second cam structure.

4. The rotating shaft mechanism as described in claim 2, characterized in that, The first swing arm includes four second cam structures and two rotating parts, wherein one of the rotating parts has a second cam structure fixedly connected to its two opposite end faces, and the other rotating part has a second cam structure fixedly connected to its two opposite end faces.

5. The rotating shaft mechanism as described in any one of claims 1 to 4, characterized in that, Along the length of the rotating shaft mechanism, the first elastic element is provided between two adjacent rotating parts in the first swing arm; Along the length of the rotating shaft mechanism, at least one of the rotating parts is provided with the first elastic element on opposite sides.

6. The rotating shaft mechanism as described in any one of claims 1 to 5, characterized in that, The opening and closing assembly also includes a plurality of brackets, which are spaced apart along the length of the rotating shaft mechanism, and the brackets are capable of moving relative to the base along the length of the rotating shaft mechanism. The first cam structure is connected to each of the opposite ends of the bracket.

7. The rotating shaft mechanism as described in claim 6, characterized in that, Along the length of the rotating shaft mechanism, there are two brackets located between two adjacent rotating parts in the first swing arm; The first elastic element is provided between the two brackets located between two adjacent rotating parts in the first swing arm; Along the length of the rotating shaft mechanism, the brackets are respectively provided on both sides of at least one rotating part of the first swing arm.

8. The rotating shaft mechanism as described in claim 7, characterized in that, The opening and closing assembly further includes a second elastic element, which is also provided between the two brackets located between two adjacent rotating parts in the first swing arm.

9. The rotating shaft mechanism as described in any one of claims 1-8, characterized in that, The first cam structure is fixed on the base, and the first cam structure on the base cooperates with the second cam structure on one of the rotating parts of the first swing arm; When relative rotation occurs between the first cam structure and the second cam structure, the first rocker arm can move relative to the base along the length direction of the rotating shaft mechanism.

10. The rotating shaft mechanism as described in any one of claims 1 to 9, characterized in that, The swing arm assembly further includes a first pin, the rotating part has a first pin hole, and the first pin passes through the first pin hole; the first pin is connected to the base so that the rotating part is rotatably connected to the base.

11. The rotating shaft mechanism as described in claim 10, characterized in that, The first pin includes a shaft portion and a stop portion, the stop portion and the shaft portion are integrally formed, and the stop portion abuts against the first elastic member.

12. The rotating shaft mechanism as described in claim 10, characterized in that, The base has a second pin hole, into which the end of the first pin is inserted, such that the first pin is confined to the base.

13. The rotating shaft mechanism as described in claim 12, characterized in that, The base includes a support plate and multiple central beams, which are distributed along the length of the rotating shaft mechanism, and the central beams are fixedly connected to the support plate. In two adjacent central beams, the end of one central beam is connected to the end of the other central beam; The middle beam is provided with the second pin hole; In two adjacent middle beams, one end of the first pin is inserted into the second pin hole on one of the middle beams, and the other end of the first pin is inserted into the second pin hole on the other middle beam.

14. The rotating shaft mechanism as described in claim 13, characterized in that, The end face of the middle beam has a first groove, and the end face of one side of the rotating part has an insertion protrusion for insertion into the first groove; the first groove is frustum-shaped, and the insertion protrusion is frustum-shaped.

15. The rotating shaft mechanism as described in any one of claims 1 to 14, characterized in that, The opening and closing assembly further includes a slider, and the first swing arm has a spiral synchronous curved surface, the slider cooperating with the synchronous curved surface; When the first swing arm rotates relative to the base between the unfolded position and the folded position, the two first swing arms in the two swing arm assemblies can move synchronously, and the slider can move along the length direction of the rotating shaft mechanism.

16. The rotating shaft mechanism as described in any one of claims 1 to 14, characterized in that, The pivot mechanism also includes a door panel; the first swing arm also includes a first guide block and a second guide block, the door panel has a first guide arc surface and a second guide arc surface, the first guide block cooperates with the first guide arc surface, and the second guide arc surface cooperates with the second guide block; Along the length of the rotating shaft mechanism, the first guide block and the second guide block are spaced apart, and the first guide arc surface and the second guide arc surface are spaced apart.

17. A rotating shaft mechanism, characterized in that, include: Base; An opening and closing assembly includes two swing arm assemblies and a first cam structure. The two swing arm assemblies are respectively located on opposite sides of the base. Each swing arm assembly includes a first swing arm and a first elastic element. The first swing arm is rotatable relative to the base between an unfolded position and a folded position. The first swing arm includes at least one rotating part, which is rotatably connected to the base. The first swing arm also includes at least one second cam structure, which is connected to the rotating part. The first cam structure is fixed on the base, and the first cam structure on the base cooperates with one of the second cam structures on the rotating part of the first swing arm. When relative rotation occurs between the first cam structure and the second cam structure, the first rocker arm can move relative to the base along the length direction of the rotating shaft mechanism.

18. The rotating shaft mechanism as described in claim 17, characterized in that, Along the length of the rotating shaft mechanism, the rotating part has two opposing end faces; The two opposite end faces of the rotating part are respectively fixedly connected to the second cam structure.

19. The rotating shaft mechanism as described in claim 17, characterized in that, The first swing arm includes multiple rotating parts; the multiple rotating parts are distributed at intervals along the length direction of the rotating shaft mechanism.

20. The rotating shaft mechanism as described in claim 19, characterized in that, The first swing arm includes at least two second cam structures, wherein the two sides opposite to the rotating part that cooperate with the first cam structure on the base are respectively fixedly connected with the second cam structure.

21. The rotating shaft mechanism as described in claim 20, characterized in that, The first swing arm includes three second cam structures; the first swing arm includes two rotating parts, one of which has a second cam structure fixedly connected to each of its two opposite end faces, and the other of which has a second cam structure fixedly connected to one of its two opposite end faces.

22. The rotating shaft mechanism as described in claim 20, characterized in that, The first swing arm includes four second cam structures; the first swing arm includes two rotating parts, one of which has a second cam structure fixedly connected to its two opposite end faces, and the other has a second cam structure fixedly connected to its two opposite end faces.

23. The rotating shaft mechanism as described in claim 19, characterized in that, Along the length of the rotating shaft mechanism, the first elastic element is provided between two adjacent rotating parts in the first swing arm; Along the length of the rotating shaft mechanism, at least one of the rotating parts is provided with the first elastic element on opposite sides.

24. The rotating shaft mechanism as described in any one of claims 17 to 23, characterized in that, The opening and closing assembly also includes a bracket, which is capable of moving relative to the base along the length direction of the rotating shaft mechanism; The first cam structure is connected to each of the opposite ends of the bracket.

25. The rotating shaft mechanism as described in claim 24, characterized in that, Along the length of the rotating shaft mechanism, there are two brackets located between two adjacent rotating parts in the first swing arm; The first elastic element is disposed between the two brackets located between two adjacent rotating parts in the first swing arm.

26. The rotating shaft mechanism as described in any one of claims 17 to 25, characterized in that, The swing arm assembly further includes a first pin, the rotating part has a first pin hole, and the first pin passes through the first pin hole; the first pin is connected to the base so that the rotating part is rotatably connected to the base.

27. The rotating shaft mechanism as described in claim 26, characterized in that, The base has a second pin hole, and the end of the first pin is inserted into the second pin hole so that the first pin is confined to the base; The base includes a support plate and multiple central beams, which are distributed along the length of the rotating shaft mechanism, and the central beams are fixedly connected to the support plate. In two adjacent central beams, the end of one central beam is connected to the end of the other central beam; The middle beam is provided with the second pin hole; In two adjacent middle beams, one end of the first pin is inserted into the second pin hole on one of the middle beams, and the other end of the first pin is inserted into the second pin hole on the other middle beam.

28. The rotating shaft mechanism as described in any one of claims 17 to 27, characterized in that, The opening and closing assembly further includes a slider, and the first swing arm has a spiral synchronous curved surface, the slider cooperating with the synchronous curved surface; When the first swing arm rotates relative to the base between the unfolded position and the folded position, the two first swing arms in the two swing arm assemblies can move synchronously, and the slider can move along the length direction of the rotating shaft mechanism.

29. An electronic device, characterized in that, The device includes a flexible display screen, a housing, and a rotating shaft mechanism. The housing includes a first sub-housing and a second sub-housing, which are respectively connected to the rotating shaft mechanism. The first sub-housing and the second sub-housing are rotatable relative to each other via the rotating shaft mechanism. The flexible display screen is connected to both the first sub-housing and the second sub-housing. The rotating shaft mechanism is the rotating shaft mechanism as described in any one of claims 1 to 16, or the rotating shaft mechanism is the rotating shaft mechanism as described in any one of claims 17 to 28.

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