Rotating shaft mechanism and electronic equipment

Abstract

The invention provides a rotating shaft mechanism and electronic equipment. The rotating shaft mechanism comprises a first base, a second base, a first shell fixing frame, a second shell fixing frame, a third shell fixing frame, a first rotating mechanism, a second rotating mechanism and a linkage gear piece. The second shell fixing frame is rotationally connected between the first base and the second base, the first shell fixing frame is rotationally connected to the side, away from the second shell fixing frame, of the first base, and the third shell fixing frame is rotationally connected to the side, away from the second shell fixing frame, of the second base. The first rotating mechanism is arranged on the first base, and the second rotating mechanism is arranged on the second base. The linkage gear piece is arranged on the second shell fixing frame and is in meshing transmission with the second gear connecting rod and the third gear connecting rod. Whether the first shell fixing frame is folded firstly or the third shell fixing frame is folded firstly, the linkage gear piece can achieve rotation linkage of the first shell fixing frame and the third shell fixing frame, and therefore linkage folding of the electronic equipment is achieved.

Description

Technical Field

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

[0002] With the gradual maturity of flexible display technology, the display mode of electronic devices has undergone very big changes. Foldable flexible screen mobile phones, foldable flexible screen tablets, and wearable electronic devices with foldable flexible screens are an important evolution direction of future smart electronic devices.

[0003] In order to simultaneously meet the user's demand for a large display screen and portability of foldable electronic devices, tri-fold folding machines are gradually being used in people's daily lives. In a tri-fold folding machine, the folding machine includes a flexible display screen, a first hinge mechanism, and a second hinge mechanism. The flexible display screen includes a first display part, a second display part, and a third display part, wherein the second display part is located between the first display part and the third display part. The first display part can be unfolded or folded relative to the second display part by a first hinge mechanism, and the third display part can be unfolded or folded relative to the second display part by a second hinge mechanism. Moreover, when the tri-fold folding machine is in a folded state, the first display part and the third display part are stacked in sequence on the same side of the second display part. However, when folding, the user may fold the first display part and the third display part in the wrong order, which may damage the flexible display screen. Summary of the invention

[0004] The present application provides a hinge mechanism and an electronic device to achieve linked folding of the electronic device.

[0005] In the first aspect, the present application provides a shaft mechanism. The shaft mechanism may specifically include a first base, a second base, a first housing fixing frame, a second housing fixing frame, a third housing fixing frame, a first rotating mechanism, a second rotating mechanism and a linkage gear member. Specifically, the first base and the second base are arranged in parallel. The second housing fixing frame is rotatably connected between the first base and the second base, the first housing fixing frame is rotatably connected to the side of the first base away from the second housing fixing frame, and the third housing fixing frame is rotatably connected to the side of the second base away from the second housing fixing frame. The first rotating mechanism may specifically include a first rotating gear, a second rotating gear, a first gear connecting rod and a second gear connecting rod. The first rotating gear and the second rotating gear are meshed, and the first rotating gear and the second rotating gear are respectively rotatably connected to the first base, and the second rotating gear is located on the side of the first rotating gear away from the first housing fixing frame. One end of the first gear connecting rod is meshed with the first rotating gear, and the other end is slidably connected to the first housing fixing frame. One end of the second gear connecting rod is meshed with the second rotating gear, and the other end is slidably connected to the second housing fixing frame. The second rotating mechanism includes a third rotating gear, a fourth rotating gear, a third gear connecting rod and a fourth gear connecting rod. The third rotating gear is meshed with the fourth rotating gear, and the third rotating gear and the fourth rotating gear are respectively connected to the second base for rotation, and the fourth rotating gear is located on the side of the third rotating gear away from the second housing fixing frame. One end of the third gear connecting rod is meshed with the third rotating gear, and the other end is slidably connected with the second housing fixing frame. One end of the fourth gear connecting rod is meshed with the fourth rotating gear, and the other end is slidably connected with the third housing fixing frame. The sliding track of the second gear connecting rod relative to the second housing fixing frame is parallel to and does not overlap with the sliding track of the third gear connecting rod relative to the second housing fixing frame. The linkage gear member is arranged on the second housing fixing frame, the linkage gear member is located between the second gear connecting rod and the third gear connecting rod, and the second gear connecting rod and the third gear connecting rod are respectively meshed with the linkage gear member for transmission.

[0006] The shaft mechanism of the present application is used for a foldable electronic device. When folding the electronic device, an external force can be applied to the first housing fixing frame or the third housing fixing frame. When an external force is applied to the first housing fixing frame, the first housing fixing frame rotates in a direction close to the second housing fixing frame, so that the first gear connecting rod slides relative to the first housing fixing frame, and the first rotating gear, the second rotating gear and the second gear connecting rod rotate synchronously with the first gear connecting rod. During the synchronous rotation process, the second gear connecting rod can slide in a direction away from the second base on the second housing fixing frame, and drive the third gear connecting rod to slide in a direction away from the first base through the linkage gear member, thereby driving the third rotating gear, the fourth rotating gear and the fourth gear connecting rod to rotate synchronously with the third gear connecting rod, so that the third gear connecting rod slides relative to the third housing fixing frame, and then the third housing fixing frame rotates in a direction close to the second housing fixing frame. When an external force is applied to the third housing fixing frame, the third housing fixing frame rotates in a direction close to the second housing fixing frame, so that the fourth gear connecting rod slides relative to the third housing fixing frame, and the fourth rotating gear, the third rotating gear and the third gear connecting rod rotate synchronously. During the synchronous rotation, the third gear connecting rod can slide in the direction away from the first base on the second housing fixing frame, and drive the second gear connecting rod to slide in the direction away from the second base through the linkage gear member, thereby driving the second rotating gear, the first rotating gear and the first gear connecting rod to rotate synchronously with the second gear connecting rod, so that the first gear connecting rod slides relative to the first housing fixing frame, and then the first housing fixing frame rotates in the direction close to the second housing fixing frame. Therefore, whether the first housing fixing frame is folded first or the third housing fixing frame is folded first, the linkage gear member can realize the linkage of the rotation of the first housing fixing frame and the third housing fixing frame relative to the second housing fixing frame, thereby realizing the linkage folding of the electronic device.

[0007] In some technical solutions, the linkage gear member can realize the linkage function. Specifically, the linkage gear member can include at least one first linkage gear. The first linkage gear has a first tooth. The first linkage gear makes the sliding distances of the second gear connecting rod and the third gear connecting rod on the second housing fixing frame equal.

[0008] In some other technical solutions, the linkage gear member can realize the linkage function and the differential function at the same time. Specifically, the linkage gear member may include at least one second linkage gear. The second linkage gear is provided with a second tooth on the side facing the second gear connecting rod, and the second linkage gear is provided with a third tooth on the side facing the third gear connecting rod. When the second gear connecting rod and the third gear connecting rod slide on the second housing fixing frame, since the second tooth is different from the third tooth, the sliding distance of the second gear connecting rod on the second housing fixing frame is different from the sliding distance of the third gear connecting rod on the second housing fixing frame, so that the rotation speed of the first housing fixing frame around the first base is different from the rotation speed of the third housing fixing frame around the second base, thereby realizing the differential rotation of the first housing fixing frame and the third housing fixing frame.

[0009] In order to achieve the above-mentioned difference between the second teeth and the third teeth, specifically, at least one of the number of teeth, module, tooth pitch, and pitch circle diameter of the second teeth and the third teeth may be different.

[0010] When the linkage gear member makes the sliding distances of the second gear connecting rod and the third gear connecting rod on the second housing fixing frame equal, the shaft mechanism may also include a first differential mechanism and a second differential mechanism. Specifically, the first differential mechanism includes a first shaft, a first rotating member and a second rotating member. The first shaft is arranged on the first base, the first rotating member is rotatably connected between the first housing fixing frame and the first shaft, and the second rotating member is rotatably connected between the second housing fixing frame and the first shaft. The second differential mechanism includes a second shaft, a third rotating member and a fourth rotating member. The second shaft is arranged on the second base, the third rotating member is rotatably connected between the second housing fixing frame and the second shaft, and the fourth rotating member is rotatably connected between the third housing fixing frame and the second shaft. By setting the rotation radius of the first differential mechanism to be different from the rotation radius of the second differential mechanism, the differential rotation of the first housing fixing frame and the third housing fixing frame is achieved.

[0011] When the first differential mechanism is specifically set, in some technical solutions, the first rotating member can be a first connecting rod, and the second rotating member can be a second connecting rod. Alternatively, in some other technical solutions, the first rotating member can be a first arc arm, and a first arc guide groove is provided on a side of the first rotating shaft close to the first arc arm. The first arc arm can be accommodated in the first arc guide groove, and the first rotating member can be rotatably connected to the first rotating shaft by sliding the first arc arm in the first arc guide groove. Correspondingly, the second rotating member can be a second arc arm, and a second arc guide groove is provided on a side of the first rotating shaft close to the second arc arm. The second arc arm can be accommodated in the second arc guide groove, and the second rotating member can be rotatably connected to the first rotating shaft by sliding the second arc arm in the second arc guide groove.

[0012] Similarly, when the second differential mechanism is specifically set, in some technical solutions, the third rotating member can be a third connecting rod, and the fourth rotating member can be a fourth connecting rod. Alternatively, in some other technical solutions, the third rotating member can be a third arc arm, and a third arc guide groove is provided on the side of the second rotating shaft close to the third arc arm. The third arc arm can be accommodated in the third arc guide groove, and the third rotating member can be rotatably connected to the second rotating shaft by sliding the third arc arm in the third arc guide groove. The fourth rotating member can be a fourth arc arm, and a fourth arc guide groove is provided on the side of the second rotating shaft close to the fourth arc arm. The fourth arc arm can be accommodated in the fourth arc guide groove, and the fourth rotating member can be rotatably connected to the second rotating shaft by sliding the fourth arc arm in the fourth arc guide groove.

[0013] The second housing fixing frame has a middle plane. In order to set the rotation radius of the first differential mechanism and the rotation radius of the second differential mechanism to be different, specifically, when the shaft mechanism is in a flattened state, along the thickness direction of the second housing fixing frame, there is a first distance between the rotation axis of the first rotating member and the middle plane, and there is a second distance between the rotation axis of the second rotating member and the middle plane, and the first distance is equal to the second distance; there is a third distance between the rotation axis of the third rotating member and the middle plane, and there is a fourth distance between the rotation axis of the fourth rotating member and the middle plane, and the third distance is equal to the fourth distance, and the first distance is not equal to the third distance. In addition, the rotation radius of the first rotating shaft around the second housing fixing frame and the rotation radius of the second rotating shaft around the second housing fixing frame are also set to be different.

[0014] When the first rotating mechanism is specifically set, the first gear connecting rod may include a first tooth segment and a first slider that are fixedly connected. The first tooth segment is meshed with the first rotating gear. The first housing fixing frame has a first slide groove on one side facing the first gear connecting rod, the first slider is accommodated in the first slide groove, and the sliding connection between the first gear connecting rod and the first housing fixing frame can be achieved by sliding the first slider in the first slide groove. Correspondingly, the second gear connecting rod may include a second tooth segment and a second slider that are fixedly connected. The second tooth segment is meshed with the second rotating gear. The second housing fixing frame has a second slide groove on one side facing the second gear connecting rod, the second slider is accommodated in the second slide groove, and the sliding connection between the second gear connecting rod and the second housing fixing frame can be achieved by sliding the second slider in the second slide groove. Similarly, when the second rotating mechanism is specifically set, the third gear connecting rod may include a third tooth segment and a third slider that are fixedly connected. The third tooth segment is meshed with the third rotating gear. The second housing fixing frame has a third slide groove on one side facing the third gear connecting rod, the third slider is accommodated in the third slide groove, and the sliding connection between the third gear connecting rod and the second housing fixing frame can be achieved by sliding the third slider in the third slide groove. Correspondingly, the fourth gear connecting rod may include a fourth tooth segment and a fourth slider which are fixedly connected. The fourth tooth segment is meshed with the fourth rotating gear. The third housing fixing frame has a fourth slide groove on one side facing the fourth gear connecting rod, the fourth slider is accommodated in the fourth slide groove, and the fourth gear connecting rod can be slidably connected to the third housing fixing frame by the fourth slider sliding in the fourth slide groove.

[0015] The second gear connecting rod may be provided with a first rack on the side facing the linkage gear member, and the first rack is meshed with the linkage gear member. Similarly, the third gear connecting rod may be provided with a second rack on the side facing the linkage gear member, and the second rack is meshed with the linkage gear member. In this way, the linkage gear member can be connected to the second gear connecting rod and the third gear connecting rod in transmission.

[0016] In a second aspect, the present application provides an electronic device. The electronic device includes a flexible display screen, a first shell, a second shell, a third shell and the hinge mechanism of the first aspect. Among them, the first shell is fixedly connected to the first shell fixing frame, the second shell is fixedly connected to the second shell fixing frame, and the third shell is fixedly connected to the third shell fixing frame. The flexible display screen continuously covers the first shell, the second shell, the third shell and the hinge mechanism, and is fixedly connected to the first shell, the second shell and the third shell respectively. When folding the electronic device, whether the first shell is folded first or the third shell is folded first, the hinge mechanism can realize the linkage of the rotation of the first shell and the third shell relative to the second shell, thereby realizing the linkage folding of the electronic device.

[0017] The electronic device may be an inward-folding electronic device, wherein the rotation axis of the first rotating mechanism rotating around the first base is located on the side of the first base facing the flexible display screen, and the rotation axis of the second rotating mechanism rotating around the second base is located on the side of the second base facing the flexible display screen. Alternatively, the electronic device may be an outward-folding electronic device, wherein the rotation axis of the first rotating mechanism rotating around the first base is located on the side of the first base away from the flexible display screen, and the rotation axis of the second rotating mechanism rotating around the second base is located on the side of the second base away from the flexible display screen. Alternatively, the electronic device may be a Z-shaped folding device, wherein the rotation axis of the first rotating mechanism rotating around the first base is located on the side of the first base facing the flexible display screen, and the rotation axis of the second rotating mechanism rotating around the second base is located on the side of the second base away from the flexible display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of an electronic device provided in an embodiment of the present application;

[0019] Figure 2 A schematic diagram of a folding electronic device provided in an embodiment of the present application;

[0020] Figure 3 Another schematic diagram of folding the electronic device provided in the embodiment of the present application;

[0021] Figure 4 A schematic diagram of a rotating shaft mechanism provided in an embodiment of the present application;

[0022] Figure 5 A schematic diagram of a first rotating mechanism provided in an embodiment of the present application;

[0023] Figure 6 A schematic diagram of a second rotating mechanism provided in an embodiment of the present application;

[0024] Figure 7 for Figure 4 Schematic diagram of the cross section of the transfer shaft mechanism along the MM direction;

[0025] Figure 8 for Figure 4 Schematic diagram of the cross section of the transfer shaft mechanism along the NN direction;

[0026] Fig. 9 for Figure 7 A schematic diagram of the first rotating mechanism;

[0027] Fig.10 for Figure 8 A schematic diagram of the second rotating mechanism;

[0028] Fig.11 Another schematic diagram of the rotating shaft mechanism provided in the embodiment of the present application;

[0029] Fig.12 A schematic diagram of a first differential mechanism and a second differential mechanism provided in an embodiment of the present application;

[0030] Fig.13 Another schematic diagram of the first differential mechanism and the second differential mechanism provided in the embodiment of the present application;

[0031] Fig.14 Another schematic diagram of the first differential mechanism and the second differential mechanism provided in the embodiment of the present application;

[0032] Fig.15 Another schematic diagram of the first differential mechanism and the second differential mechanism provided in the embodiment of the present application;

[0033] Fig.16 Another schematic diagram of the rotating shaft mechanism provided in the embodiment of the present application;

[0034] Fig.17 A schematic diagram of an electronic device in a folded state provided by an embodiment of the present application;

[0035] Fig.18 A schematic diagram of the linkage gear member provided in an embodiment of the present application.

[0036] Reference numerals:

[0037] 10-Electronic equipment;

[0038] 11- rotating shaft mechanism;

[0039] 12-Flexible display screen;

[0040] 13- first housing;

[0041] 14- second housing;

[0042] 15- third housing;

[0043] 111- first base;

[0044] 112- second base;

[0045] 113-first housing fixing frame;

[0046] 114-second housing fixing frame;

[0047] 115-third housing fixing frame;

[0048] 116-first rotating mechanism;

[0049] 117- second rotating mechanism;

[0050] 118-linked gear member;

[0051] 119- first differential mechanism;

[0052] 110 - second differential mechanism;

[0053] 1131-first chute;

[0054] 1141-second chute;

[0055] 1142-third chute;

[0056] 1151-4th chute;

[0057] 1161-first gear connecting rod;

[0058] 1162-first rotating gear;

[0059] 1163-second rotating gear;

[0060] 1164-second gear connecting rod;

[0061] 1171-third gear connecting rod;

[0062] 1172-third rotating gear;

[0063] 1173-fourth rotating gear;

[0064] 1174-4th gear connecting rod;

[0065] 1181-first linkage gear;

[0066] 1182-second linkage gear;

[0067] 1191-first rotating shaft;

[0068] 1192-first rotating member;

[0069] 1193-second rotating member;

[0070] 1101- second rotating shaft;

[0071] 1102-third rotating member;

[0072] 1103- fourth rotating member;

[0073] 11611-first slider;

[0074] 11612-first tooth segment;

[0075] 11641-second tooth segment;

[0076] 11642-second slider;

[0077] 11643-first rack;

[0078] 11711-third slider;

[0079] 11712-third tooth segment;

[0080] 11741-fourth tooth segment;

[0081] 11742-4th slider;

[0082] 11713-second rack;

[0083] 11821-second tooth;

[0084] 11822-Third tooth. DETAILED DESCRIPTION

[0085] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings.

[0086] In order to facilitate understanding of the hinge mechanism provided in the embodiment of the present application, its application scenario is described below. The hinge mechanism can be applied to, but is not limited to, foldable electronic devices such as mobile phones, smart wearable devices, tablet computers, or laptop computers. When the hinge mechanism provided in the embodiment of the present application is applied to electronic devices, reference can be made to Figure 1 , Figure 1 A schematic diagram of an electronic device provided in an embodiment of the present application. The electronic device 10 provided in the present application is a tri-fold electronic device, which may specifically include a hinge mechanism 11, a flexible display screen 12, a first shell 13, a second shell 14, and a third shell 15. Among them, the second shell 14 is located between the first shell 13 and the third shell 15, and the first shell 13, the second shell 14, and the third shell 15 are respectively connected to the hinge mechanism 11. The flexible display screen 12 continuously covers the first shell 13, the second shell 14, the third shell 15 and the hinge mechanism 11, and the first shell 13, the second shell 14, and the third shell 15 are respectively fixedly connected to the flexible display screen 12. In the above-mentioned electronic device 10, the first shell 13 and the third shell 15 can rotate around the second shell 14 under the action of the hinge mechanism 11, thereby realizing the folding and unfolding of the electronic device 10. Figure 2 A schematic diagram of a folding electronic device provided in an embodiment of the present application. Figure 2 As shown, when the electronic device 10 is in a folded state, the first shell 13 and the third shell 15 can be folded on both sides of the second shell 14 respectively, that is, the electronic device 10 is folded in a Z shape. Figure 3 Another schematic diagram of folding the electronic device provided in the embodiment of the present application. Figure 3As shown, the first shell 13 and the third shell 15 can also be stacked on the same side of the second shell 14. In this case, the electronic device 10 can be an outward folding electronic device. That is to say, when the electronic device 10 is in a folded state, the flexible display screen 12 can serve as both the display surface of the electronic device 10 and the appearance surface of the electronic device 10. It can be understood that the process of the electronic device 10 changing from the unfolded state to the folded state, or from the folded state to the unfolded state, is the process of the first shell 13 and the third shell 15 rotating around the hinge mechanism 11. The flexible display screen 12 is bent or flattened along with the first shell 13 and the third shell 15 during this process. Of course, the above-mentioned electronic device 10 can also be an inward folding electronic device. That is to say, the flexible display screen 12 only serves as the display surface of the electronic device 10, and when the electronic device 10 is in a folded state, the first shell 13, the second shell 14 and the hinge mechanism 11 can provide a first teardrop-shaped accommodation space that meets the bending requirement of the flexible display screen 12, and the second shell 14, the third shell 15 and the hinge mechanism 11 can provide a second teardrop-shaped accommodation space that meets the bending requirement of the flexible display screen 12, thereby avoiding pulling or squeezing of the flexible display screen 12, thereby reducing the risk of damage to the flexible display screen 12.

[0087] In some current foldable electronic devices, the first shell and the third shell are respectively rotated around the second shell through a hinge mechanism. However, in a foldable electronic device with a folding sequence, the user may fold the first shell and the third shell in the wrong order, resulting in damage to the flexible display screen, thereby affecting the reliability of the electronic device and the user's experience. Therefore, the present application provides a hinge mechanism and an electronic device to achieve linked folding of the electronic device.

[0088] It should be noted that the terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to be limiting of the present application. As used in the specification and appended claims of the present application, the singular expressions "a", "an", "said", "above", "the" and "this" are intended to also include expressions such as "one or more", unless there is a clear indication to the contrary in the context.

[0089] References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear at different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0090] Figure 4 A schematic diagram of a rotating shaft mechanism provided in an embodiment of the present application. Figure 4 As shown, the hinge mechanism 11 includes a first base 111, a second base 112, a first shell fixing frame 113, a second shell fixing frame 114, a third shell fixing frame 115, a first rotating mechanism 116 and a second rotating mechanism 117. The first base 111 and the second base 112 are arranged in parallel. The first shell fixing frame 113 and the second shell fixing frame 114 are arranged on both sides of the first base 111 and are respectively rotatably connected to the first base 111, the second shell fixing frame 114 and the third shell fixing frame 115 are arranged on both sides of the second base 112 and are respectively rotatably connected to the second base 112, wherein the second shell fixing frame 114 is located between the first base 111 and the second base 112. When the hinge mechanism 11 is applied to the electronic device 10, the first shell 13 is fixedly connected to the first shell fixing frame 113, the second shell 14 is fixedly connected to the second shell fixing frame 114, and the third shell 15 is fixedly connected to the third shell fixing frame 115. In some embodiments, the electronic device 10 may be an inward-folding electronic device, wherein the rotation axis of the first rotating mechanism 116 rotating around the first base 111 may be located on the side of the first base 111 facing the flexible display screen 12, and the rotation axis of the second rotating mechanism 117 rotating around the second base 112 may be located on the side of the second base 112 facing the flexible display screen 12. In some other embodiments, the electronic device 10 may also be an outward-folding electronic device, wherein the rotation axis of the first rotating mechanism 116 rotating around the first base 111 may be located on the side of the first base 111 away from the flexible display screen 12, and the rotation axis of the second rotating mechanism 117 rotating around the second base 112 may be located on the side of the second base 112 away from the flexible display screen 12. In some other embodiments, the electronic device 10 can also be a Z-shaped folding device, wherein the rotation axis of the first rotating mechanism 116 around the first base 111 is located on the side of the first base 111 facing the flexible display screen 12, and the rotation axis of the second rotating mechanism 117 around the second base 112 is located on the side of the second base 112 away from the flexible display screen 12.

[0091] Figure 5 A schematic diagram of a first rotating mechanism provided in an embodiment of the present application. Figure 5 As shown, the first rotating mechanism 116 may include a first gear link 1161, a first rotating gear 1162, a second rotating gear 1163 and a second gear link 1164. The first rotating gear 1162 and the second rotating gear 1163 are meshed, and the first rotating gear 1162 and the second rotating gear 1163 are respectively rotatably connected to the first base 111, wherein the first rotating gear 1162 is arranged close to the first housing fixing frame 113, and the second rotating gear 1163 is arranged close to the second housing fixing frame 114. The first gear link 1161 is located between the first housing fixing frame 113 and the first base 111, one end of the first gear link 1161 is slidably connected to the first housing fixing frame 113, and the other end is meshed with the first rotating gear 1162. The second gear link 1164 is located between the second housing fixing frame 114 and the first base 111, one end of the second gear link 1164 is slidably connected to the second housing fixing frame 114, and the other end is meshed with the second rotating gear 1163.

[0092] Figure 6 A schematic diagram of a second rotating mechanism provided in an embodiment of the present application. Figure 6 As shown, the second rotating mechanism 117 may include a third gear link 1171, a third rotating gear 1172, a fourth rotating gear 1173 and a fourth gear link 1174. The third rotating gear 1172 and the fourth rotating gear 1173 are meshed, and the third rotating gear 1172 and the fourth rotating gear 1173 are respectively rotatably connected to the second base 112, wherein the third rotating gear 1172 is arranged close to the second housing fixing frame 114, and the fourth rotating gear 1173 is arranged close to the third housing fixing frame 115. The third gear link 1171 is located between the second housing fixing frame 114 and the second base 112, one end of the third gear link 1171 is slidably connected to the second housing fixing frame 114, and the other end is meshed with the third rotating gear 1172. The fourth gear link 1174 is located between the third housing fixing frame 115 and the second base 112, one end of the fourth gear link 1174 is slidably connected to the third housing fixing frame 115, and the other end is meshed with the fourth rotating gear 1173.

[0093] Please continue to refer to Figure 4, the sliding track of the second gear connecting rod 1164 relative to the second housing fixing frame 114 is parallel to and does not overlap with the sliding track of the third gear connecting rod 1171 relative to the second housing fixing frame 114. The rotating shaft mechanism 11 may further include a linkage gear member 118 disposed on the second housing fixing frame 114. The linkage gear member 118 is located between the second gear connecting rod 1164 and the third gear connecting rod 1171, and the linkage gear member 118 is respectively meshed with the second gear connecting rod 1164 and the third gear connecting rod 1171 for transmission.

[0094] When folding the electronic device 10 , the user may apply external force to either the first housing fixing frame 113 or the second housing fixing frame 114 . Figure 7 for Figure 4 Schematic diagram of the cross section of the central shaft mechanism along the MM direction. Figure 4 and Figure 7 As shown, when the user first folds the first housing fixing frame 113, the first housing fixing frame 113 rotates toward the second housing fixing frame 114. At this time, the first gear connecting rod 1161 rotates relative to the first housing fixing frame 113 toward the second housing fixing frame 114 (i.e. Figure 7 The first rotating gear 1162, the second rotating gear 1163 and the second gear connecting rod 1164 are driven to rotate synchronously, so that the second gear connecting rod 1164 is moved in the direction away from the second base 112 (i.e. Figure 4 and Figure 7 Slide in the direction indicated by arrow A. Figure 8 for Figure 4 Schematic diagram of the cross section of the central shaft mechanism along the NN direction. Figure 4 and Figure 8 As shown, when the second gear link 1164 slides relative to the second housing fixing frame 114, the sliding movement is transmitted to the third gear link 1171 through the linkage gear member 118, and the third gear link 1171 is driven to move in the second housing fixing frame 114 in a direction away from the first base 111 (i.e. Figure 4 and Figure 8 The third rotating gear 1172, the fourth rotating gear 1173 and the fourth gear connecting rod 1174 are driven to rotate synchronously, so that the fourth gear connecting rod 1174 slides relative to the third housing fixing frame 115, thereby driving the third housing fixing frame 115 to move closer to the second housing fixing frame 114 (i.e. Figure 8 The machine rotates in the direction indicated by the arrow D.

[0095] like Figure 4 and Figure 8 As shown, when the user first folds the third housing fixing frame 115, the third housing fixing frame 115 moves toward the direction close to the second housing fixing frame 114 (ie Figure 8 At this time, the fourth gear connecting rod 1174 slides relative to the third housing fixing frame 115, thereby driving the fourth rotating gear 1173, the third rotating gear 1172 and the third gear connecting rod 1171 to rotate synchronously, so that the third gear connecting rod 1171 rotates in the direction away from the first base 111 (i.e., the direction indicated by the arrow D in the middle). Figure 4 and Figure 8 Slide in the direction indicated by arrow B. Figure 4 and Figure 7 As shown, when the third gear link 1171 slides relative to the second housing fixing frame 114, the sliding movement is transmitted to the second gear link 1164 through the linkage gear member 118, and the second gear link 1164 is driven to move in the second housing fixing frame 114 in a direction away from the second base 112 (i.e. Figure 4 and Figure 7 The second rotating gear 1163, the first rotating gear 1162 and the first gear connecting rod 1161 are driven to rotate synchronously, so that the first gear connecting rod 1161 moves relative to the first housing fixing frame 113 toward the second housing fixing frame 114 (i.e. Figure 7 The first housing fixing frame 113 slides in the direction indicated by the middle arrow C, thereby driving the first housing fixing frame 113 to rotate toward the direction close to the second housing fixing frame 114.

[0096] Therefore, no matter the user folds the first shell fixing frame 113 first or the third shell fixing frame 115 first, the linkage gear member 118 can realize the linkage rotation of the first shell fixing frame 113 and the third shell fixing frame 115 relative to the second shell fixing frame 114, thereby realizing the linkage folding of the electronic device 10.

[0097] like Figure 5As shown, when the first rotating mechanism 116 is specifically provided, the first gear connecting rod 1161 may include a first slider 11611 and a first tooth segment 11612 that are fixedly connected, wherein the first tooth segment 11612 is arranged toward the first base 111 and meshes with the first rotating gear 1162, and the first slider 11611 is arranged toward the first housing fixing frame 113. The first housing fixing frame 113 has a first slide groove 1131 on one side facing the first gear connecting rod 1161, and the first slider 11611 is accommodated in the first slide groove 1131 and realizes the sliding connection between the first gear connecting rod 1161 and the first housing fixing frame 113 by sliding in the first slide groove 1131. Similarly, the second gear connecting rod 1164 may include a second tooth segment 11641 and a second slider 11642 that are fixedly connected, wherein the second tooth segment 11641 is arranged toward the first base 111 and meshes with the second rotating gear 1163, and the second slider 11642 is arranged toward the second housing fixing frame 114. The second housing fixing frame 114 has a second slide groove 1141 on one side facing the second gear connecting rod 1164. The second slider 11642 is received in the second slide groove 1141 and slides in the second slide groove 1141 to achieve a sliding connection between the second gear connecting rod 1164 and the second housing fixing frame 114. Figure 6 As shown, when the second rotating mechanism 117 is specifically provided, the third gear connecting rod 1171 may include a third slider 11711 and a third tooth segment 11712 that are fixedly connected, wherein the third tooth segment 11712 is arranged toward the second base 112 and meshes with the third rotating gear 1172, and the third slider 11711 is arranged toward the second housing fixing frame 114. The second housing fixing frame 114 has a third slide groove 1142 on one side facing the third gear connecting rod 1171, and the third slider 11711 is accommodated in the third slide groove 1142 and realizes the sliding connection between the third gear connecting rod 1171 and the second housing fixing frame 114 by sliding in the third slide groove 1142. Similarly, the fourth gear connecting rod 1174 includes a fourth tooth segment 11741 and a fourth slider 11742 that are fixedly connected, wherein the fourth tooth segment 11741 is arranged toward the second base 112 and meshes with the fourth rotating gear 1173, and the fourth slider 11742 is arranged toward the third housing fixing frame 115. The third housing fixing frame 115 has a fourth sliding groove 1151 on one side facing the fourth gear connecting rod 1174 . The fourth sliding block 11742 is received in the fourth sliding groove 1151 and realizes a sliding connection between the fourth gear connecting rod 1174 and the third housing fixing frame 115 by sliding in the fourth sliding groove 1151 .

[0098] Fig. 9 for Figure 7 Schematic diagram of the first rotating mechanism, Fig.10 for Figure 8 Schematic diagram of the second rotating mechanism. Fig. 9As shown, when the first housing fixing frame 113 moves around the first base 111 toward the second housing fixing frame 114 (as shown in FIG. Fig. 9 When the first housing fixing frame 113 rotates, the first gear connecting rod 1161 drives the first gear connecting rod 1161 to rotate around the first base 111, and the first slider 11611 slides in the first slide slot 1131 along the direction indicated by the arrow C. During the rotation of the first gear connecting rod 1161, the first tooth segment 11612 drives the first rotating gear 1162, the second rotating gear 1163 and the second gear segment 11641 to rotate synchronously, so that the second gear connecting rod 1164 rotates around the first base 111, and the second slider 11642 slides in the second slide slot 1141 along the direction indicated by the arrow A. Fig.10 As shown, the linkage gear member 118 transmits the sliding movement of the second slider 11642 to the third gear connecting rod 1171, so that the third slider 11711 moves along the third sliding groove 1142. Fig.10 The third gear connecting rod 1171 slides in the direction indicated by the arrow B, thereby driving the third gear connecting rod 1171 to rotate around the second base 112. During the process of the third gear connecting rod 1171 rotating around the second base 112, the third tooth segment 11712 drives the third rotating gear 1172, the fourth rotating gear 1173 and the fourth tooth segment 11741 to rotate synchronously, thereby causing the fourth gear connecting rod 1174 to rotate around the second base 112, and at the same time, the fourth slider 11742 slides in the fourth sliding groove 1151 in the direction indicated by the arrow D, thereby driving the third housing fixing frame 115 to rotate around the second base 112 toward the second housing fixing frame 114 (as shown in FIG. Fig.10 The device rotates as indicated by the curved arrow in the middle.

[0099] Please continue to refer to Fig.10 When the third housing fixing frame 115 moves around the second base 112 toward the second housing fixing frame 114 (such as Fig.10 When the third housing fixing frame 115 rotates, the fourth gear connecting rod 1174 is driven to rotate around the second base 112, and the fourth slider 11742 slides in the fourth slide slot 1151 along the direction indicated by the arrow D. During the rotation of the fourth gear connecting rod 1174, the fourth tooth segment 11741 drives the fourth rotating gear 1173, the third rotating gear 1172 and the third tooth segment 11712 to rotate synchronously, so that the third gear connecting rod 1171 rotates around the second base 112, and the third slider 11711 slides in the third slide slot 1142 along the direction indicated by the arrow B. Fig. 9As shown, the linkage gear member 118 transmits the sliding movement of the third slider 11711 to the second gear connecting rod 1164, so that the second slider 11642 slides in the second slide slot 1141 in the direction indicated by the arrow A, thereby driving the second gear connecting rod 1164 to rotate around the first base 111. In the process of the second gear connecting rod 1164 rotating around the first base 111, the second tooth segment 11641 drives the second rotating gear 1163, the first rotating gear 1162 and the first tooth segment 11612 to rotate synchronously, so that the first gear connecting rod 1161 rotates around the first base 111, and at the same time, the first slider 11611 slides in the first slide slot 1131 in the direction indicated by the arrow C, thereby linking the first shell fixing frame 113 to rotate around the first base 111 toward the second shell fixing frame 114 (as shown in FIG. Fig. 9 The device rotates as indicated by the curved arrow in the middle.

[0100] like Figure 4 As shown, in the electronic device 10, in order to achieve linkage, the second gear connecting rod 1164 is provided with a first rack 11643 on the side facing the linkage gear member 118, and the first rack 11643 is meshed with the linkage gear member 118. The third gear connecting rod 1171 is provided with a second rack 11713 on the side facing the linkage gear member 118, and the second rack 11713 is meshed with the linkage gear member 118.

[0101] In some embodiments, the linkage gear member 118 may include at least one first linkage gear 1181. Figure 4 As shown, in a specific embodiment, at least one first linkage gear 1181 may include two first linkage gears 1181, and the two first linkage gears 1181 are arranged along the sliding direction of the second gear connecting rod 1164 and the third gear connecting rod 1171. Among them, the first linkage gear 1181 has a first tooth. In this embodiment, since the second gear connecting rod 1164 and the third gear connecting rod 1171 are both transmission-connected to the first linkage gear 1181, the sliding distances of the second gear connecting rod 1164 and the third gear connecting rod 1171 on the second housing fixing frame 114 are equal.

[0102] In the electronic device 10 , in order to fold the first housing fixing frame 113 and the third housing fixing frame 115 in a set order, the hinge mechanism 11 may further include a first differential mechanism 119 and a second differential mechanism 110 . Fig.11 Another schematic diagram of the rotating shaft mechanism provided in the embodiment of the present application, Fig.12 A schematic diagram of a first differential mechanism and a second differential mechanism provided in an embodiment of the present application. Fig.11 and Fig.12As shown, the first differential mechanism 119 may include a first rotating shaft 1191, a first rotating member 1192, and a second rotating member 1193. The first rotating shaft 1191 is disposed on the first base 111, the first rotating member 1192 is rotatably connected between the first housing fixing frame 113 and the first rotating shaft 1191, and the second rotating member 1193 is rotatably connected between the second housing fixing frame 114 and the first rotating shaft 1191. Similarly, the second differential mechanism 110 may include a second rotating shaft 1101, a third rotating member 1102, and a fourth rotating member 1103. The second rotating shaft 1101 is disposed on the second base 112, the third rotating member 1102 is rotatably connected between the second housing fixing frame 114 and the second rotating shaft 1101, and the fourth rotating member 1103 is rotatably connected between the third housing fixing frame 115 and the second rotating shaft 1101. The rotation radius of the first differential mechanism 119 is different from that of the second differential mechanism 110 , that is, the rotation radius of the first differential mechanism 119 is greater than that of the second differential mechanism 110 , or the rotation radius of the first differential mechanism 119 is less than that of the second differential mechanism 110 .

[0103] In some embodiments, when the rotation radius of the first differential mechanism 119 is smaller than the rotation radius of the second differential mechanism 110, since the sliding distances of the second gear link 1164 and the third gear link 1171 on the second housing fixing frame 114 are equal, the angular velocity of the second differential mechanism 110 rotating around the second housing fixing frame 114 is smaller than the angular velocity of the first differential mechanism 119 rotating around the second housing fixing frame 114, thereby making the rotation speed of the second differential mechanism 110 smaller than the rotation speed of the first differential mechanism 119, and achieving the rotation speed of the third housing fixing frame 115 smaller than the rotation speed of the first housing fixing frame 113. Therefore, when the first shell fixing frame 113 or the third shell fixing frame 115 is pushed by external force to rotate, the above-mentioned first linkage gear 1181 can make the first shell fixing frame 113 and the third shell fixing frame 115 fold in a linked manner, and the first differential mechanism 119 and the second differential mechanism 110 can realize the differential rotation of the first shell fixing frame 113 and the third shell fixing frame 115, so that the first shell fixing frame 113 is first folded to one side of the second shell fixing frame 114, and then the third shell fixing frame 115 is folded to the side of the first shell fixing frame 113 away from the second shell fixing frame 114.

[0104] In some other embodiments, when the rotation radius of the first differential mechanism 119 is greater than the rotation radius of the second differential mechanism 110, since the sliding distances of the second gear link 1164 and the third gear link 1171 on the second housing fixing frame 114 are equal, the angular velocity of the second differential mechanism 110 rotating around the second housing fixing frame 114 is greater than the angular velocity of the first differential mechanism 119 rotating around the second housing fixing frame 114, thereby making the rotation speed of the second differential mechanism 110 greater than the rotation speed of the first differential mechanism 119, and achieving that the rotation speed of the third housing fixing frame 115 is greater than the rotation speed of the first housing fixing frame 113. Therefore, when the first shell fixing frame 113 or the third shell fixing frame 115 is pushed by external force to rotate, the above-mentioned first linkage gear 1181 can make the first shell fixing frame 113 and the third shell fixing frame 115 fold in a linked manner, and the first differential mechanism 119 and the second differential mechanism 110 can realize the differential rotation of the first shell fixing frame 113 and the third shell fixing frame 115, so that the third shell fixing frame 115 is first folded to one side of the second shell fixing frame 114, and then the first shell fixing frame 113 is folded to the side of the third shell fixing frame 115 away from the second shell fixing frame 114.

[0105] Fig.13 Another schematic diagram of the first differential mechanism and the second differential mechanism provided in the embodiment of the present application. Fig.13As shown, in some embodiments, the first rotating member 1192 may be a first connecting rod, and the second rotating member 1193 may be a second connecting rod. In this embodiment, the first rotating shaft 1191 is fixed to the first base 111. One end of the first connecting rod may be sleeved on the first rotating shaft 1191, and the other end may be rotatably connected to the first housing fixing frame 113 through a pin. One end of the second connecting rod may be sleeved on the first rotating shaft 1191, and the other end may be rotatably connected to the second housing fixing frame 114 through a pin. In some other embodiments, the first rotating shaft 1191 may also be provided with a first receiving groove and a second receiving groove, the first housing fixing frame 113 may be provided with a third receiving groove, and the second housing fixing frame 114 may be provided with a fourth receiving groove. One end of the first connecting rod is accommodated in the first receiving groove and the first connecting rod is rotatably connected to the first rotating shaft 1191 by rotating in the first receiving groove, and the other end is accommodated in the third receiving groove and the first connecting rod is rotatably connected to the first housing fixing frame 113 by rotating in the third receiving groove. One end of the second connecting rod is accommodated in the second receiving groove and the second connecting rod is rotatably connected to the first rotating shaft 1191 by rotating in the second receiving groove, and the other end is accommodated in the fourth receiving groove and the second connecting rod is rotatably connected to the second housing fixing frame 114 by rotating in the fourth receiving groove. Similarly, the third rotating member 1102 can be a third connecting rod, and the fourth rotating member 1103 can be a fourth connecting rod. In this embodiment, the second rotating shaft 1101 is fixed to the second base 112. One end of the third connecting rod can be sleeved on the second rotating shaft 1101, and the other end can be rotatably connected to the second housing fixing frame 114 through a pin. One end of the third connecting rod can be sleeved on the second rotating shaft 1101, and the other end can be rotatably connected to the third housing fixing frame 115 through a pin. In some other embodiments, the second rotating shaft 1101 can also be provided with a fifth receiving groove and a sixth receiving groove, the second housing fixing frame 114 is provided with a seventh receiving groove, and the third housing fixing frame 115 is provided with an eighth receiving groove. One end of the third connecting rod is accommodated in the fifth receiving groove and is rotated in the fifth receiving groove to realize the rotational connection between the third connecting rod and the second rotating shaft 1101, and the other end is accommodated in the seventh receiving groove and is rotated in the seventh receiving groove to realize the rotational connection between the third connecting rod and the second housing fixing frame 114. One end of the fourth connecting rod is accommodated in the sixth receiving groove and is rotated in the sixth receiving groove to realize the rotational connection between the fourth connecting rod and the second rotating shaft 1101, and the other end is accommodated in the eighth receiving groove and is rotated in the eighth receiving groove to realize the rotational connection between the fourth connecting rod and the third housing fixing frame 115.

[0106] Fig.14 Another schematic diagram of the first differential mechanism and the second differential mechanism provided in the embodiment of the present application. Fig.14As shown, in some other embodiments, the first rotating member 1192 may also be a first arc arm, a first arc guide groove is provided on the side of the first rotating shaft 1191 close to the first arc arm, the first arc arm is accommodated in the first arc guide groove, and the first rotating member 1192 is rotatably connected to the first rotating shaft 1191 by sliding in the first arc guide groove. The second rotating member 1193 may be a second arc arm, a second arc guide groove is provided on the side of the first rotating shaft 1191 close to the second arc arm, the second arc arm is accommodated in the second arc guide groove, and the second rotating member 1193 is rotatably connected to the first rotating shaft 1191 by sliding in the second arc guide groove. Similarly, the third rotating member 1102 may also be a third arc arm, a third arc guide groove is provided on the side of the second rotating shaft 1101 close to the third arc arm, the third arc arm is accommodated in the third arc guide groove, and the third rotating member 1102 is rotatably connected to the second rotating shaft 1101 by sliding in the third arc guide groove. The fourth rotating member 1103 can also be a fourth arc arm. A fourth arc guide groove is provided on the side of the second rotating shaft 1101 close to the fourth arc arm. The fourth arc arm is accommodated in the fourth arc guide groove and the fourth rotating member 1103 is rotationally connected to the second rotating shaft 1101 by sliding in the fourth arc guide groove.

[0107] In the present application, the differential is achieved by setting the rotation radius of the first differential mechanism 119 and the rotation radius of the second differential mechanism 110 to be different. Fig.15 Another schematic diagram of the first differential mechanism and the second differential mechanism provided in the embodiment of the present application. Fig.15 As shown, specifically, the second housing fixing frame 114 has a middle plane S. When the rotating shaft mechanism 11 is in a flattened state, along the thickness direction of the second housing fixing frame 114 (i.e., as shown by arrow G in FIG. 15 ), there is a first distance D1 between the rotation axis O1 of the first rotating member 1192 and the middle plane S, and there is a second distance D2 between the rotation axis O2 of the second rotating member 1193 and the middle plane S, and the first distance D1 is equal to the second distance D2. Correspondingly, there is a third distance D3 between the rotation axis O3 of the third rotating member 1102 and the middle plane S, and there is a fourth distance D4 between the rotation axis O4 of the fourth rotating member 1103 and the middle plane S, and the third distance D3 is equal to the fourth distance D4, and the first distance D1 is not equal to the third distance D3. The rotation radius of the first rotating shaft 1191 around the second housing fixing frame 114 is different from the rotation radius of the second rotating shaft 1101 around the second housing fixing frame 114. In this way, the rotation radius of the first differential mechanism 119 can be different from the rotation radius of the second differential mechanism 110 .

[0108] In actual use, when the electronic device 10 is folded from the initial flat state, after the first base 111 is rotated 90°, the first housing fixing frame 113 and the second housing fixing frame 114 can be closed. At this time, the second base 112 is rotated to a certain angle, such as Figure 3 shown. Fig.16 Another schematic diagram of the shaft mechanism provided in the embodiment of the present application. Fig.16 As shown, at this time, the first rack 11643 is disengaged from the linkage gear member 118, so that the second base 112 and the third shell fixing member can continue to rotate, so that the second rack 11713 continues to slide with the third gear connecting rod 1171. Fig.17 This is a schematic diagram of an electronic device in a folded state provided by an embodiment of the present application. Fig.17 As shown, when the second base 112 rotates to 90 degrees, the third housing fixing frame 115 is superimposed on the side of the first housing fixing frame 113 away from the second housing fixing frame 114 , so that the third housing fixing frame 115 is closed with the first housing fixing frame 113 and the second housing fixing frame 114 .

[0109] Fig.18 A schematic diagram of a linkage gear member provided in an embodiment of the present application. Fig.18 As shown, in some other embodiments, the linkage gear member 118 includes at least one second linkage gear 1182. The second linkage gear 1182 is provided with a second tooth 11821 on the side facing the second gear connecting rod 1164, and the second linkage gear 1182 is provided with a third tooth 11822 on the side facing the third gear connecting rod 1171, and the second tooth 11821 is different from the third tooth 11822. Specifically, the difference between the second tooth 11821 and the third tooth 11822 may include at least one of the number of teeth, module, tooth pitch, and pitch circle diameter. In this embodiment, the second linkage gear 1182 is a special-shaped gear, and the linkage and differential function of the second gear connecting rod 1164 and the third gear connecting rod 1171 can be realized through the second linkage gear 1182, thereby simplifying the structure of the shaft mechanism 11.

[0110] The terms used in the above embodiments are only for the purpose of describing specific embodiments and are not intended to be used as limitations on the present application. As used in the specification and appended claims of the present application, the singular expressions "a", "a", "said", "above", "the" and "this" are intended to also include expressions such as "one or more", unless there is a clear indication to the contrary in the context.

[0111] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A hinge mechanism (11) for a foldable electronic device (10), characterized in that: The rotating shaft mechanism (11) comprises: A first base (111) and a second base (112) arranged in parallel; A first shell fixing frame (113), a second shell fixing frame (114) and a third shell fixing frame (115), wherein the second shell fixing frame (114) is rotatably connected between the first base (111) and the second base (112), the first shell fixing frame (113) is rotatably connected to a side of the first base (111) facing away from the second shell fixing frame (114), and the third shell fixing frame (115) is rotatably connected to a side of the second base (112) facing away from the second shell fixing frame (114); The first rotating mechanism (116) comprises a first rotating gear (1162), a second rotating gear (1163), a first gear connecting rod (1161) and a second gear connecting rod (1164); the first rotating gear (1162) and the second rotating gear (1163) are meshed and respectively connected to the first base (111), and the second rotating gear (1163) is located on a side of the first rotating gear (1162) away from the first shell fixing frame (113); one end of the first gear connecting rod (1161) is meshed with the first rotating gear (1162), and the other end is connected to the first shell fixing frame (113) in a sliding manner; one end of the second gear connecting rod (1164) is meshed with the second rotating gear (1163), and the other end is connected to the second shell fixing frame (114) in a sliding manner; The second rotating mechanism (117) comprises a third rotating gear (1172), a fourth rotating gear (1173), a third gear connecting rod (1171) and a fourth gear connecting rod (1174); the third rotating gear (1172) and the fourth rotating gear (1173) are meshed and respectively connected to the second base (112) for rotation, and the fourth rotating gear (1173) is located on a side of the third rotating gear (1172) away from the second housing fixing frame (114); the third gear connecting rod (1171) One end of the fourth gear connecting rod (1174) is meshed with the third rotating gear (1172), and the other end is slidably connected to the second shell fixing frame (114); one end of the fourth gear connecting rod (1174) is meshed with the fourth rotating gear (1173), and the other end is slidably connected to the third shell fixing frame (115); the sliding track of the second gear connecting rod (1164) relative to the second shell fixing frame (114) is parallel to and does not overlap with the sliding track of the third gear connecting rod (1171) relative to the second shell fixing frame (114); a linkage gear member (118) disposed on the second housing fixing frame (114), the linkage gear member (118) being located between the second gear connecting rod (1164) and the third gear connecting rod (1171), and being meshed and transmitted with the second gear connecting rod (1164) and the third gear connecting rod (1171) respectively; When the first shell fixing frame (113) rotates in a direction approaching the second shell fixing frame (114), the first rotating gear (1162), the second rotating gear (1163), the first gear connecting rod (1161) and the second gear connecting rod (1164) rotate synchronously, the second gear connecting rod (1164) slides in a direction away from the second base (112) on the second shell fixing frame (114), and drives the third gear connecting rod (1171) to slide in a direction away from the first base (111) through the linkage gear member (118), thereby driving the third gear connecting rod (1171), the third rotating gear (1172), the fourth rotating gear (1173) and the fourth gear connecting rod (1174) to rotate synchronously, so that the third shell fixing frame (115) rotates in a direction approaching the second shell fixing frame (114); When the third shell fixing frame (115) rotates in a direction approaching the second shell fixing frame (114), the third rotating gear (1172), the fourth rotating gear (1173), the third gear connecting rod (1171) and the fourth gear connecting rod (1174) rotate synchronously, and the third gear connecting rod (1171) slides on the second shell fixing frame (114) in a direction away from the first base (111), and drives the second gear connecting rod (1164) to slide in a direction away from the second base (112) through the linkage gear member (118), thereby driving the second gear connecting rod (1164), the second rotating gear (1163), the first rotating gear (1162) and the first gear connecting rod (1161) to rotate synchronously, so that the first shell fixing frame (113) rotates in a direction approaching the second shell fixing frame (114).

2. The rotating shaft mechanism (11) according to claim 1, characterized in that: The linkage gear member (118) comprises at least one first linkage gear (1181), and the first linkage gear (1181) has first teeth.

3. The rotating shaft mechanism (11) according to claim 1, characterized in that: The linkage gear member (118) comprises at least one second linkage gear (1182), wherein the second linkage gear (1182) is provided with a second tooth (11821) on the side facing the second gear connecting rod (1164), and the second linkage gear (1182) is provided with a third tooth (11822) on the side facing the third gear connecting rod (1171), and the second tooth (11821) is different from the third tooth (11822).

4. The rotating shaft mechanism (11) according to claim 3, characterized in that: The second tooth (11821) is different from the third tooth (11822), including at least one of the number of teeth, module, tooth pitch, and pitch circle diameter.

5. The rotating shaft mechanism (11) according to any one of claims 1 to 4, characterized in that: The rotating shaft mechanism (11) further comprises a first differential mechanism (119) and a second differential mechanism (110); The first differential mechanism (119) comprises a first rotating shaft (1191), a first rotating member (1192) and a second rotating member (1193); the first rotating shaft (1191) is disposed on the first base (111), the first rotating member (1192) is rotatably connected between the first housing fixing frame (113) and the first rotating shaft (1191), and the second rotating member (1193) is rotatably connected between the second housing fixing frame (114) and the first rotating shaft (1191); The second differential mechanism (110) comprises a second rotating shaft (1101), a third rotating member (1102) and a fourth rotating member (1103); the second rotating shaft (1101) is arranged on the second base (112), the third rotating member (1102) is rotatably connected between the second housing fixing frame (114) and the second rotating shaft (1101), and the fourth rotating member (1103) is rotatably connected between the third housing fixing frame (115) and the second rotating shaft (1101); The rotation radius of the first differential mechanism (119) is different from the rotation radius of the second differential mechanism (110).

6. The rotating shaft mechanism (11) according to claim 5, characterized in that: The first rotating member (1192) is a first connecting rod, and the second rotating member (1193) is a second connecting rod; Alternatively, the first rotating member (1192) is a first arc arm, and a first arc guide groove is provided on a side of the first rotating shaft (1191) close to the first arc arm; the first arc arm is accommodated in the first arc guide groove and the first rotating member (1192) and the first rotating shaft (1191) are rotationally connected by sliding in the first arc guide groove; the second rotating member (1193) is a second arc arm, and a second arc guide groove is provided on a side of the first rotating shaft (1191) close to the second arc arm; the second arc arm is accommodated in the second arc guide groove and the second rotating member (1193) and the first rotating shaft (1191) are rotationally connected by sliding in the second arc guide groove.

7. The rotating shaft mechanism (11) according to claim 5 or 6, characterized in that: The third rotating member (1102) is a third connecting rod, and the fourth rotating member (1103) is a fourth connecting rod; Alternatively, the third rotating member (1102) is a third arc arm, and a third arc guide groove is provided on a side of the second rotating shaft (1101) close to the third arc arm; the third arc arm is accommodated in the third arc guide groove, and the rotational connection between the third rotating member (1102) and the second rotating shaft (1101) is achieved by sliding in the third arc guide groove; the fourth rotating member (1103) is a fourth arc arm, and a fourth arc guide groove is provided on a side of the second rotating shaft (1101) close to the fourth arc arm; the fourth arc arm is accommodated in the fourth arc guide groove, and the rotational connection between the fourth rotating member (1103) and the second rotating shaft (1101) is achieved by sliding in the fourth arc guide groove.

8. The rotating shaft mechanism (11) according to any one of claims 5 to 7, characterized in that: The second shell fixing frame (114) has a middle plane; when the rotating shaft mechanism (11) is in a flattened state, along the thickness direction of the second shell fixing frame (114), there is a first distance between the rotation axis of the first rotating member (1192) and the middle plane, and there is a second distance between the rotation axis of the second rotating member (1193) and the middle plane, and the first distance is equal to the second distance; there is a third distance between the rotation axis of the third rotating member (1102) and the middle plane, and there is a fourth distance between the rotation axis of the fourth rotating member (1103) and the middle plane, and the third distance is equal to the fourth distance, and the first distance is not equal to the third distance; the rotation radius of the first rotating shaft (1191) around the second shell fixing frame (114) is different from the rotation radius of the second rotating shaft (1101) around the second shell fixing frame (114).

9. The rotating shaft mechanism (11) according to any one of claims 1 to 8, characterized in that: The first gear connecting rod (1161) comprises a first tooth segment (11612) and a first sliding block (11611) which are fixedly connected, the first tooth segment (11612) meshes with the first rotating gear (1162), the first housing fixing frame (113) has a first sliding groove (1131) on one side facing the first gear connecting rod (1161), the first sliding block (11611) is accommodated in the first sliding groove (1131) and realizes a sliding connection between the first gear connecting rod (1161) and the first housing fixing frame (113) by sliding in the first sliding groove (1131); The second gear connecting rod (1164) comprises a second tooth segment (11641) and a second sliding block (11642) which are fixedly connected, the second tooth segment (11641) is meshed with the second rotating gear (1163), the second housing fixing frame (114) has a second sliding groove (1141) on the side facing the second gear connecting rod (1164), the second sliding block (11642) is accommodated in the second sliding groove (1141) and realizes the sliding connection between the second gear connecting rod (1164) and the second housing fixing frame (114) by sliding in the second sliding groove (1141); The third gear connecting rod (1171) comprises a third tooth segment (11712) and a third sliding block (11711) which are fixedly connected, the third tooth segment (11712) is meshed with the third rotating gear (1172), the second housing fixing frame (114) has a third sliding groove (1142) on one side facing the third gear connecting rod (1171), the third sliding block (11711) is accommodated in the third sliding groove (1142) and realizes the sliding connection between the third gear connecting rod (1171) and the second housing fixing frame (114) by sliding in the third sliding groove (1142); The fourth gear connecting rod (1174) includes a fourth tooth segment (11741) and a fourth sliding block (11742) which are fixedly connected. The fourth tooth segment (11741) is meshed with the fourth rotating gear (1173). The third shell fixing frame (115) has a fourth sliding groove (1151) on the side facing the fourth gear connecting rod (1174). The fourth sliding block (11742) is accommodated in the fourth sliding groove (1151) and realizes the sliding connection between the fourth gear connecting rod (1174) and the third shell fixing frame (115) by sliding in the fourth sliding groove (1151).

10. The rotating shaft mechanism (11) according to any one of claims 1 to 9, characterized in that: A first rack (11643) is provided on a side of the second gear connecting rod (1164) facing the linkage gear member (118), and the first rack (11643) is meshed with the linkage gear member (118); A second rack (11713) is provided on the side of the third gear connecting rod (1171) facing the linkage gear member (118), and the second rack (11713) is meshed with the linkage gear member (118).

11. An electronic device (10), characterized in that: The invention comprises a flexible display screen (12), a first shell (13), a second shell (14), a third shell (15) and a hinge mechanism (11) as claimed in any one of claims 1 to 10, wherein the first shell (13) is fixedly connected to the first shell fixing frame (113), the second shell (14) is fixedly connected to the second shell fixing frame (114), the third shell (15) is fixedly connected to the third shell fixing frame (115), and the flexible display screen (12) continuously covers the first shell (13), the second shell (14), the third shell (15) and the hinge mechanism (11), and is fixedly connected to the first shell (13), the second shell (14) and the third shell (15), respectively.

12. The electronic device (10) according to claim 11, characterized in that The rotation axis of the first rotating mechanism (116) rotating around the first base (111) is located on a side of the first base (111) facing the flexible display screen (12), and the rotation axis of the second rotating mechanism (117) rotating around the second base (112) is located on a side of the second base (112) facing the flexible display screen (12); or The rotation axis of the first rotating mechanism (116) rotating around the first base (111) is located on a side of the first base (111) away from the flexible display screen (12), and the rotation axis of the second rotating mechanism (117) rotating around the second base (112) is located on a side of the second base (112) away from the flexible display screen (12); or The rotation axis of the first rotating mechanism (116) rotating around the first base (111) is located on a side of the first base (111) facing the flexible display screen (12), and the rotation axis of the second rotating mechanism (117) rotating around the second base (112) is located on a side of the second base (112) facing away from the flexible display screen (12).

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