Synchronous mechanism, rotating shaft mechanism and electronic equipment

Abstract

The present application relates to the technical field of terminal equipment, and discloses a synchronization mechanism, a rotating shaft mechanism and an electronic device. The synchronization mechanism includes: a base, a swing arm and a synchronization rod. The base includes a positioning column; two swing arms are located on opposite sides of the positioning column along the axial direction of the base, and are rotatably connected to the base; each swing arm includes a sliding portion, and the two sliding portions are symmetrical relative to the positioning column; the synchronization rod is slidably connected to the positioning column; the two ends of the synchronization rod respectively include sliding grooves, and the two sliding grooves correspond to the two sliding portions one by one. The coordinated movement of each sliding groove and its corresponding sliding portion drives the synchronization rod to move relative to the positioning column along the thickness direction of the base. In this way, the rotation angles of the two swing arms around the base can be consistent, thereby realizing the synchronous rotation of the two swing arms around the base, so that the rotating shaft mechanism can be opened and closed smoothly, improving the user experience.

Description

Technical Field

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

[0002] With the development of terminal technology, the display screen size of electronic devices such as mobile phones is getting larger and larger. In order to take into account the user's portability needs while increasing the display screen size, folding screen devices are gradually entering the user's usage scenarios. Folding screen devices include a hinge mechanism to fold and unfold the folding screen device through the hinge mechanism.

[0003] The folding screen device includes a first body, a second body and a hinge mechanism. The hinge mechanism includes a base, two door panels and two swing arms located on both sides of the base, the two door panels are respectively connected to the first body and the second body, and the two door panels are rotatably connected to the base through corresponding swing arms to drive the first body and the second body to fold or unfold.

[0004] However, since the two swing arms rotate around the base separately, it is very easy for the two swing arms to rotate asynchronously. If the two swing arms do not rotate synchronously, the hinge mechanism will not be able to open and close, which will make the folding screen device unusable and affect the user experience. Summary of the invention

[0005] The present application provides a synchronization mechanism, a rotating shaft mechanism and an electronic device to solve the problem that the rotating shaft mechanism is prone to asynchronous rotation.

[0006] In the first aspect, the present application provides a synchronization mechanism, including: a base, a swing arm and a synchronization rod. The base includes a positioning column, the length direction of the positioning column is parallel to the thickness direction of the base; two swing arms are located on opposite sides of the positioning column along the axis direction of the base and are rotatably connected to the base, and the axis direction of the base is perpendicular to the thickness direction of the base; each swing arm includes a sliding part, and the two sliding parts are symmetrical relative to the positioning column; the synchronization rod is slidably connected to the positioning column; the two ends of the synchronization rod respectively include sliding grooves, the two sliding grooves correspond to the two sliding parts one by one, and the sliding grooves abut against the corresponding sliding parts; the coordinated movement of each sliding groove and its corresponding sliding part drives the synchronization rod to move relative to the positioning column along the thickness direction of the base, so that the two swing arms rotate synchronously around the base.

[0007] In the synchronization mechanism provided in the embodiment of the present application, the synchronization rod connects the two swing arms, and the two swing arms are slidably connected to the two ends of the synchronization rod. When the two swing arms rotate, the two swing arms and the synchronization rod slide together to drive the synchronization rod to slide along the thickness direction of the base relative to the positioning column, so that the rotation angles of the two swing arms around the base are consistent, thereby realizing the synchronous rotation of the two swing arms. In this way, the use of the synchronization mechanism can make the shaft mechanism open and close smoothly, thereby improving the user experience.

[0008] In some implementations, the synchronization rod further includes a through hole, which is located between the two sliding grooves; the synchronization rod is sleeved on the outer side of the positioning column through the through hole; and the length direction of the synchronization rod is perpendicular to the length direction of the positioning column. In this way, the through hole can be used to realize the sliding of the synchronization rod relative to the positioning column.

[0009] In some implementations, when the two swing arms are in the unfolded state, the two sliding parts are away from the base, and the synchronization rod is located at the top of the positioning column; when the two swing arms rotate from the unfolded state to the folded state, the two sliding parts are driven to move to a position close to the base, and the synchronization rod is driven to slide along the thickness direction of the base to the bottom of the positioning column. In this way, when the synchronization mechanism switches from the unfolded state and the folded state, the synchronization rod rises or falls relative to the positioning column, and the synchronization column cooperates with the sliding of the two swing arms to realize the synchronous rotation of the two swing arms on both sides of the base.

[0010] In some implementations, the swing arm includes a rotating portion, which is rotatably connected to the base via a pin; the sliding portion is located on the rotating portion and in the radial direction of the pin; the length direction of the sliding portion is parallel to the axial direction of the base, and the radial direction of the pin is perpendicular to the axial direction of the base. In this way, the sliding portion can be slidably matched with the synchronization rod, so that the sliding portion rotates with the rotating portion to drive the movement of the synchronization rod.

[0011] In some implementations, the rotating part includes an embedding groove, which is located on a side surface of the rotating part facing the positioning column; the sliding part is located in the embedding groove, and the sliding part is connected between two opposite side surfaces of the embedding groove. In this way, a matching method of the swing arm and the synchronization rod can be provided, and the embedding groove is used to realize the embedded sliding connection between the swing arm and the synchronization rod.

[0012] In some implementations, the rotating part includes a groove, which is located on a side surface of the rotating part facing the positioning column and extends from the end surface of the rotating part to the inside by a first width; one end of the sliding part is connected to the side wall of the groove, and the other end extends along the axial direction relative to the side wall. In this way, another matching mode of the swing arm and the synchronization rod can be provided, and the swing arm and the synchronization rod can be connected by a snap-fit ​​sliding connection by using the groove.

[0013] In some implementations, the cross section of the sliding portion is tooth-shaped. The end of the synchronization rod also includes two tooth-shaped structures; the two tooth-shaped structures are arranged and connected along the thickness direction of the base, so that the two tooth-shaped structures form a sliding groove. In this way, a sliding mode of the swing arm and the synchronization rod can be provided. When the two swing arms rotate relative to the base, the tooth-shaped structure at the end of the synchronization rod engages with the tooth-shaped sliding portion of the swing arm, thereby realizing synchronous movement of the synchronization rod while the swing arm rotates.

[0014] In some implementations, the cross section of the sliding portion is circular. The sliding groove is formed by the end of the synchronization rod being recessed inwardly to a first depth; the sliding groove is an arc groove, and the center lines of the two sliding grooves form an angle away from the base. In this way, another sliding mode of the swing arm and the synchronization rod can be provided. When the two swing arms rotate relative to the base, the first sliding portion of the first swing arm slides in the first sliding groove, and the second sliding portion of the second swing arm slides in the second sliding groove, so as to drive the synchronization rod to move synchronously.

[0015] In some implementations, the synchronization rod includes a first surface facing away from the base; the first surface is bent toward the base, so that when the synchronization mechanism is folded, the curved first surface can be used to avoid the display screen, thereby preventing the display screen from contacting the synchronization rod and being damaged.

[0016] In the second aspect, the present application provides a pivot mechanism, comprising: a door panel, and a synchronization mechanism as provided in the first aspect; the two door panels are located on opposite sides of a base of the synchronization mechanism along the axial direction, the two door panels correspond one-to-one to two swing arms, each door panel is connected to the base through a swing arm opposite to it, and is configured to rotate around the base.

[0017] In a third aspect, the present application provides an electronic device, comprising a display screen, a first body, a second body and a hinge mechanism as provided in the first aspect; the first body and the second body are located on opposite sides of the axial direction of the hinge mechanism, and the first body and the second body are respectively connected to the hinge mechanism; the display screen covers the first body, the second body and the hinge mechanism, and the first body and the second body rotate with the bending or unfolding of the hinge mechanism to drive the display screen to bend or unfold.

[0018] It can be understood that the rotating shaft mechanism and electronic device provided in the above aspects are all applied to the synchronization mechanism provided above. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the synchronization mechanism provided above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the embodiments are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] Figure 1 is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

[0021] Figure 2 It is a structural schematic diagram of a rotating shaft assembly;

[0022] Figure 3 It is a structural schematic diagram of a gear synchronization mechanism;

[0023] Figure 4 It is a first three-dimensional structural schematic diagram of the synchronization mechanism provided in the embodiment of the present application;

[0024] Figure 5 This is a first structural schematic diagram of the synchronization mechanism provided in the embodiment of the present application;

[0025] Figure 6 yes Figure 5 The first structural diagram of the AA section;

[0026] Fig. 7A This is a first three-dimensional structural schematic diagram of a swing arm provided in an embodiment of the present application;

[0027] Figure 7B yes Fig. 7A Schematic diagram of the local structure of the middle BB section;

[0028] Figure 7C yes Fig. 7A Schematic diagram of the local enlarged structure of the B1 area in the middle;

[0029] Figure 8 It is a first structural schematic diagram of a synchronization rod provided in an embodiment of the present application;

[0030] Fig. 9 yes Figure 5 Schematic diagram of the local structure of the middle A1 region;

[0031] Fig.10 yes Figure 5 The second structural diagram of the AA section;

[0032] Fig.11 is a second three-dimensional structural schematic diagram of the synchronization mechanism provided in an embodiment of the present application;

[0033] Fig.12 is a second structural schematic diagram of the rotating part provided in the embodiment of the present application;

[0034] Fig.13A is a second three-dimensional structural schematic diagram of the swing arm provided in an embodiment of the present application;

[0035] Fig. 13B is a partial side structural schematic diagram of a swing arm provided in an embodiment of the present application;

[0036] Fig. 13C yes Fig.13A A schematic diagram of the local enlarged structure of the D area in the middle;

[0037] Fig.14 yes Fig.12 The first structural diagram of the CC section;

[0038] Fig.15 is a second structural schematic diagram of a synchronization rod provided in an embodiment of the present application;

[0039] Fig.16 yes Fig.12 Schematic diagram of the local structure of the middle C1 region;

[0040] Fig.17 yes Fig.12 The second structural diagram of the CC section.

[0041] Illustration Description:

[0042] Among them, 10-first fuselage, 20-second fuselage, 30-display screen, 40-shaft assembly, 41-shaft base, 42-left door panel, 43-right door panel, 44-left connecting block, 45-right connecting block, 46-main swing arm, 47-door panel swing arm, 48-damping swing arm, 51-first gear, 52-second gear, 53-third gear, 54-fourth gear, 100-base, 101-positioning column, 102-pin shaft, 200-swing arm, 200-1-first swing arm, 200-2-second swing arm, 201-sliding part, 201-1-first sliding part, 201-2-second sliding part, 202-rotating part, 202-1- First rotating part, 202-2-second rotating part, 2021-first axial hole, 2022-second axial hole, 203-embedded groove, 203-1-first embedded groove, 203-2-second embedded groove, 204-groove, 204-1-first groove, 204-2-second groove, 2041-side wall, 300-synchronizing rod, 301-sliding groove, 301-1-first sliding groove, 301-2-second sliding groove, 302-through hole, 303-tooth structure, 303-1-first tooth structure, 303-2-second tooth structure, 303-3-third tooth structure, 303-4-fourth tooth structure, 304-first surface. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be described clearly below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments of the present application, other embodiments obtained by ordinary technicians in this field without making creative work all belong to the protection scope of the present application.

[0044] In the description of this application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the feature. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0045] In addition, in the present application, directional terms such as "up", "down", "left" and "right" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they may change accordingly according to the changes in the orientation of the components in the drawings.

[0046] The electronic device described in the embodiments of the present application includes but is not limited to a mobile phone, a folding screen mobile phone, a notebook computer, a tablet computer, a laptop computer, a personal digital assistant or a wearable device, etc. The following description is made by taking the electronic device as a folding screen mobile phone.

[0047] Figure 1 It is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

[0048] like Figure 1 As shown, the electronic device may include a first body 10, a second body 20, a display screen 30 and a hinge assembly 40, wherein: Figure 1 The dotted line in the figure schematically shows the area of ​​the hinge assembly 40. The first body 10 and the second body 20 are arranged on both sides of the axis direction of the hinge assembly 40. The first body 10 and the second body 20 are respectively connected to the hinge assembly 40, and the hinge assembly 40 can be rotated to reduce the angle between the first body 10 and the second body 20 until the electronic device is in a folded state (not shown in the figure); or increase the angle between the first body 10 and the second body 20 until the electronic device is in an unfolded state (as shown in the figure). Figure 1 The electronic device may also be unfolded or folded to an intermediate state, and the intermediate state may be any state between the unfolded state and the folded state.

[0049] The display screen 30 covers the first body 10, the second body 20 and the hinge assembly 40, and is connected to the first body 10 and the second body 20 respectively. The rotation of the first body 10 and the second body 20 can drive the display screen 30 to bend or unfold. Exemplarily, the display screen 30 can be a bendable flexible screen, and the display screen 30 has a bending area, so that the display screen 30 can be bent in the bending area as the hinge assembly 40 rotates.

[0050] The display screen 30 moves with the electronic device, and the state of the electronic device is the same as the state of the hinge assembly 40. When the electronic device is in the unfolded state, the hinge assembly 40 is also in the unfolded state. In the unfolded state, the first body 10 and the second body 20 are parallelly distributed on both sides of the hinge assembly 40, and the display screen 30 is laid flat on the hinge assembly 40 in the unfolded state. The display screen 30 is displayed in full screen, so that the electronic device has a larger display area to improve the user's viewing and operating experience. When the electronic device is in the folded state, the hinge assembly 40 is also in the folded state (such as Figure 2 ). In the folded state, the first body 10 and the second body 20 are relatively distributed on both sides of the hinge assembly 40, and the hinge assembly 40 presses the display screen 30 into a water drop shape. When the electronic device is in the folded state, the plane size of the electronic device is small, which is convenient for users to carry and store. When the electronic device is in the intermediate state, the hinge assembly 40 is also in the intermediate state.

[0051] Depending on the rotation direction of the first body 10 and the second body 20, the flexible screen may be hidden inside the body when the electronic device is in a folded state, or it may be wrapped around the outside of the body. Among them, when the first body 10 and the second body 20 are folded toward the front of the flexible screen, the flexible screen is hidden inside the body when the electronic device is in a folded state, and this electronic device can be called an inner folding screen electronic device, such as an inner folding screen mobile phone; when the first body 10 and the second body 20 are folded toward the back of the flexible screen, the flexible screen is wrapped around the outside of the body when the electronic device is in a folded state, and this electronic device can be called an outer folding screen electronic device, such as an outer folding screen mobile phone.

[0052] It should be noted that electronic components such as circuit boards, camera modules, speaker modules and batteries may be disposed in the first body 10 and the second body 20 , which are not listed one by one here.

[0053] To facilitate the explanation of the positions of various components in an electronic device, the embodiment of the present application exemplarily establishes a three-dimensional coordinate system based on the electronic device, wherein the x-axis direction is the width direction of the electronic device, the y-axis direction is the length direction of the electronic device, and the z-axis direction is the thickness direction of the electronic device.

[0054] Figure 2 The present invention is a structural schematic diagram of a rotating shaft assembly.

[0055] like Figure 2 As shown, the shaft assembly 40 includes a shaft base 41, a left door panel 42, a right door panel 43, a left connecting block 44, a right connecting block 45, two sets of main swing arms 46, two sets of door panel swing arms 47 and two sets of damping swing arms 48. It should be noted that Figure 2Only part of the structure of the rotating shaft assembly 40 is shown, and other structures of the rotating shaft assembly 40 are not shown. A group of main swing arms 46 includes two main swing arms 46, a group of door panel swing arms 47 includes two door panel swing arms 47, and a group of damping swing arms 48 includes two damping swing arms 48.

[0056] The length direction of the rotating shaft base 41 is the axial direction Z of the rotating shaft assembly 40. 0 , axis direction Z 0 The left door panel 42 and the right door panel 43 are parallel to the y-axis direction. 0 Located on opposite sides of the rotating shaft base 41, the left connecting block 44 and the right connecting block 45 are connected along the axis direction Z 0 Located on opposite sides of the rotating shaft base 41, the left door panel 42 is connected to the left connecting block 44, and the right door panel 43 is connected to the right connecting block 45. The left connecting block 44 is movably connected to one side of the rotating shaft base 41 through a set of main swing arms 46, a set of door panel swing arms 47 and a set of damping swing arms 48, and the right connecting block 45 is movably connected to the other side of the rotating shaft base 41 through another set of main swing arms 46, another set of door panel swing arms 47 and another set of damping swing arms 48. The movable connection can be a rotating connection or a sliding connection.

[0057] Combination Figure 1 and Figure 2 The display screen 30 is covered on the left door panel 42 and the right door panel 43 (hereinafter collectively referred to as the door panels), and the door panels are used to support the display screen 30. The door panels can be fixedly connected to the display screen 30, and the door panels can move with the folding and unfolding of the rotating shaft assembly 40, and can push the display screen 30 to fold or unfold, so as to support the display screen 30 in the unfolded state, and press the display screen 30 into a water drop shape in the folded state. Figure 2 The structure of the rotating shaft assembly 40 is shown in a folded state.

[0058] Since each group of swing arms on both sides of the pivot base 41 rotates around the pivot base 41 respectively, it is very easy for the two swing arms to rotate asynchronously. For example, the main swing arms 46 on both sides of the pivot base 41 rotate asynchronously, the door panel swing arms 47 on both sides of the pivot base 41 rotate asynchronously, and the damping swing arms 48 on both sides of the pivot base 41 rotate asynchronously.

[0059] If the two swing arms do not rotate synchronously, the shaft assembly 40 will not be able to open and close, which will cause the folding screen device to be unusable, affecting the user experience. Therefore, a synchronization mechanism, such as a gear synchronization mechanism or a spiral groove synchronization mechanism, can be set in the shaft assembly 40 to achieve synchronous rotation of each group of swing arms.

[0060] Figure 3 It is a structural diagram of a gear synchronization mechanism.

[0061] like Figure 3 As shown, the gear synchronization mechanism is located on the shaft base 41 and between a group of swing arms. The swing arms include a main swing arm 46, a door panel swing arm 47 and / or a damping swing arm 48, etc., and the following is an exemplary description using the swing arm as the main swing arm 46 as an example.

[0062] The gear synchronization mechanism is located between the two main swing arms 46, and the gear synchronization mechanism includes a first gear 51, a second gear 52, a third gear 53 and a fourth gear 54 that are meshed in sequence. The first gear 51 is connected to the main swing arm 46 on the left, and the fourth gear 54 is connected to the main swing arm 46 on the right.

[0063] When the shaft assembly 40 is folded or unfolded, the two main swing arms 46 rotate around the shaft base 41 , and the first gear 51 , the second gear 52 , the third gear 53 and the fourth gear 54 rotate in meshing with each other to achieve synchronous rotation of the two main swing arms 46 .

[0064] However, as foldable phones become thinner and lighter, the size of the gear synchronization mechanism also needs to be reduced. The reduction in the size of the gear synchronization mechanism will reduce the size of the gears, which will lead to insufficient strength of the gears. In particular, the root of the teeth is prone to breakage during the folding process or after a fall or other impact.

[0065] When the spiral groove synchronization mechanism is used to realize the synchronous rotation of the swing arm, this structure is not shown in the figure. The spiral groove synchronization mechanism is located between the two main swing arms 46. The spiral groove synchronization mechanism includes a synchronization block and two rotating shafts. The synchronization block is located between the two rotating shafts. The synchronization block is located on the rotating shaft base, and the two rotating shafts are located on opposite sides of the rotating shaft base.

[0066] Each rotating shaft is provided with a spiral groove, and the two spiral grooves rotate in opposite directions. A first synchronous bracket and a second synchronous bracket are provided on opposite sides of the synchronous block, the first synchronous bracket is connected to the spiral groove on the rotating shaft on the same side in an inclined state, and the second synchronous bracket is connected to the spiral groove on the rotating shaft on the same side in an inclined state, and the first synchronous bracket and the second synchronous bracket are mirror images along the axial direction.

[0067] One of the main swing arms 46 is connected to the spiral groove on the same side of the rotating shaft, and the other main swing arm 46 is connected to the spiral groove on the same side of the rotating shaft. When the rotating shaft assembly 40 is folded or unfolded, the two main swing arms 46 rotate around their respective rotating shafts, and the two main swing arms 46 rotate synchronously around the rotating shaft base 41 by utilizing the spiral rotation of each spiral groove and the corresponding first synchronous bracket and the second synchronous bracket.

[0068] However, the spiral groove in the spiral groove synchronization mechanism is complicated to process and difficult to form. Usually, the complete part needs to be disassembled into two parts for processing. For example, the main swing arm 46 needs to be disassembled into two sub-main swing arms before the spiral groove can be processed; and during the rotation process, the synchronization block needs to move along the y-axis, which will occupy the y-axis direction space of the shaft assembly 40, which is not conducive to the miniaturization of the shaft mechanism and the thinness of the folding screen mobile phone.

[0069] In order to solve the above technical problems, an embodiment of the present application provides a synchronization mechanism, which can realize the synchronous rotation of two swing arms around the base, and the synchronization mechanism has high strength itself and is not easy to break during the folding process or after impact such as falling. The synchronization mechanism is simple to process and can be miniaturized, which can reduce the space occupied by the shaft assembly, thereby realizing the lightweight development of electronic equipment.

[0070] Figure 4 It is a first three-dimensional structural schematic diagram of the synchronization mechanism provided in the embodiment of the present application; Figure 5 This is the first structural diagram of the synchronization mechanism provided in the embodiment of the present application. Figure 4 and Figure 5 The structure of the synchronization mechanism is shown in the deployed state.

[0071] like Figure 4 and Figure 5 As shown, in some embodiments, the synchronization mechanism may include: a base 100 , a swing arm 200 and a synchronization rod 300 .

[0072] The base 100 may be a shaft base in a shaft mechanism, and the length direction of the base 100 is the axis direction of the base 100, which is also the axis direction of the shaft mechanism. The axis direction of the base 100 is the y-axis direction, the thickness direction of the base 100 is the z-axis direction, the width direction of the base 100 is the x-axis direction, and the axis direction of the base 100 is perpendicular to the thickness direction of the base 100.

[0073] The swing arm 200 may be Figure 2 Any of the main swing arm 46, the door panel swing arm 47 and / or the damping swing arm 48 shown is not limited here. The number of a set of swing arms 200 is two, and the two swing arms 200 are located on opposite sides of the base 100 along the axis direction of the base 100 and are rotatably connected to the base 100.

[0074] Exemplarily, the two swing arms 200 include a first swing arm 200-1 and a second swing arm 200-2. The first swing arm 200-1 and the second swing arm 200-2 are located on opposite sides of the base 100 along the axis direction of the base 100, and one end of the first swing arm 200-1 and one end of the second swing arm 200-2 are rotatably connected to the base 100 respectively. In the rotating shaft mechanism, the rotating shaft mechanism includes a left connecting block 44 and a right connecting block 45, and the other end of the first swing arm 200-1 is slidably connected to the left connecting block 44, and the other end of the second swing arm 200-2 is slidably connected to the right connecting block 45. The structure of the rotating shaft mechanism can be referred to Figure 2 The structure of the provided rotating shaft assembly 40 is not described in detail here.

[0075] The synchronization rod 300 is located on the base 100, and the length direction of the synchronization rod 300 is perpendicular to the length direction of the base 100, and the length direction of the synchronization rod 300 is parallel to the x-axis direction. The two ends of the synchronization rod 300 are respectively slidably connected with the first swing arm 200-1 and the second swing arm 200-2, so that the rotation angles of the first swing arm 200-1 and the second swing arm 200-2 relative to the base 100 are consistent, so as to realize the synchronous rotation of the first swing arm 200-1 and the second swing arm 200-2 around the base 100.

[0076] Exemplarily, each swing arm 200 includes two rotating parts to be rotatably connected to the base 100, and the two rotating parts are arranged at intervals along the y-axis direction. Correspondingly, the number of the synchronization rods 300 is two, and the two synchronization rods 300 are arranged at intervals along the y-axis direction. Figure 5 Taking the state shown as an example, the synchronization rod 300 on the left is slidingly connected to a rotating part of the first swing arm 200-1 and a rotating part of the second swing arm 200-2; the synchronization rod 300 on the right is slidingly connected to another rotating part of the first swing arm 200-1 and another rotating part of the second swing arm 200-2.

[0077] It should be noted that the structures of the left and right synchronization rods 300 can be the same, so that each synchronization rod 300 slides in the same manner as the swing arm 200; the structures of the left and right synchronization rods 300 can also be different, so that each synchronization rod 300 slides in a different manner than the swing arm 200. This article takes the example that the structures of the left and right synchronization rods 300 are the same and each synchronization rod 300 slides in the same manner as the swing arm 200, and exemplifies the structure of one of the synchronization rods 300.

[0078] Figure 6 yes Figure 5 The first structural diagram of the AA section. Figure 6 A cross-sectional view showing the synchronization mechanism in a deployed state.

[0079] like Figure 6As shown, in some embodiments, the base 100 may include a positioning column 101, which is located on a side surface of the base 100 facing the display screen 30. The length direction of the positioning column 101 is parallel to the thickness direction (z-axis direction) of the base 100, and the positioning column 101 is perpendicular to the base 100.

[0080] The length of the positioning column 101 can be determined based on the thickness of the shaft mechanism. For example, the length of the positioning column 101 is less than the thickness of the shaft mechanism. In this way, the positioning column 101 can be prevented from occupying too much space in the z-axis direction of the shaft mechanism, thereby preventing the miniaturization of the shaft mechanism from being affected.

[0081] The two swing arms 200 are located on opposite sides of the positioning column 101 along the axial direction of the base 100. For example, the first swing arm 200-1 and the second swing arm 200-2 are located on opposite sides of the positioning column 101, and the first swing arm 200-1 and the second swing arm 200-2 can be symmetrical relative to the positioning column 101.

[0082] Fig. 7A This is the first three-dimensional structural schematic diagram of the swing arm provided in the embodiment of the present application.

[0083] Combination Figure 6 and Fig. 7A As shown, in some embodiments, the swing arm 200 may include two rotating parts 202, and the two rotating parts 202 are spaced apart at two ends of the swing arm 200 body along the axial direction.

[0084] The rotating part 202 is adjacent to the positioning column 101. The rotating part 202 includes an axial hole, and the axis of the axial hole is parallel to the axis direction of the base 100. The base 100 includes a pin shaft 102, and the length direction of the pin shaft 102 is parallel to the axis direction of the base 100. The pin shaft 102 passes through the axial hole, so that the rotating part 202 is rotatably connected to the base 100 through the pin shaft 102.

[0085] Exemplarily, the first swing arm 200-1 includes a first rotating part 202-1, and the first rotating part 202-1 includes a first axial hole 2021; the second swing arm 200-2 includes a second rotating part 202-2, and the second rotating part 202-2 includes a second axial hole 2022; the axes of the first axial hole 2021 and the second axial hole 2022 are parallel and are both parallel to the axial direction of the base 100; the first rotating part 202-1 and the second rotating part 202-2 are both adjacent to the positioning column 101 and are symmetrical relative to the positioning column 101.

[0086] The base 100 includes a first pin shaft 102-1 and a second pin shaft 102-2 on opposite sides, and the length directions of the first pin shaft 102-1 and the second pin shaft 102-2 are parallel to the axis direction of the base 100. The first pin shaft 102-1 passes through the first shaft hole 2021, so that the first rotating part 202 is rotatably connected to the base 100 through the first pin shaft 102-1; the second pin shaft 102-2 passes through the second shaft hole 2022, so that the second rotating part 202-2 is rotatably connected to the base 100 through the second pin shaft 102-2.

[0087] Figure 7B yes Fig. 7A Schematic diagram of the local structure of the BB section.

[0088] Combination Figure 6 and Figure 7B As shown, in some embodiments, each swing arm 200 may further include a sliding portion 201, and the two sliding portions 201 are symmetrical with respect to the positioning column 101. Exemplarily, the first swing arm 200-1 includes a first sliding portion 201-1, and the second swing arm 200-2 includes a second sliding portion 201-2. Along the x-axis direction, the first sliding portion 201-1 and the second sliding portion 201-2 are symmetrical with respect to the positioning column 101.

[0089] The sliding part 201 is located on the rotating part 202 and in the radial direction of the pin shaft 102, that is, the sliding part 201 is located in the radial direction of the first shaft hole 2021, and the sliding part 201 is in a ring array relative to the axis of the first shaft hole 2021. The length direction of the sliding part 201 is parallel to the axial direction of the base 100, and the radial direction of the pin shaft 102 is perpendicular to the axial direction of the base 100.

[0090] Exemplarily, the first sliding portion 201-1 is located on the first rotating portion 202-1 and in the radial direction of the first pin shaft 102-1, and the length direction of the first sliding portion 201-1 is parallel to the axial direction of the base 100; the second sliding portion 201-2 is located on the second rotating portion 202-2 and in the radial direction of the second pin shaft 102-2, and the length direction of the second sliding portion 201-2 is parallel to the axial direction of the base 100.

[0091] In some embodiments, in the structure of the swing arm 200 , the sliding portion 201 may be located at different positions of the rotating portion 202 to provide different matching modes between the swing arm 200 and the synchronization rod 300 , for example, a chimeric mode or a snap-on mode.

[0092] Figure 7C yes Fig. 7A Schematic diagram of the local enlarged structure of the B1 area in the middle.

[0093] Combination Figure 6 and Figure 7CAs shown, when the swing arm 200 and the synchronization rod 300 adopt the first matching mode, i.e., the interlocking mode, the rotating part 202 may include an embedding groove 203, which is located on the side surface of the rotating part 202 facing the positioning column 101 and is located in the middle of the side surface along the y-axis direction. The embedding groove 203 may be formed by the side surface of the rotating part 202 facing the positioning column 101 being recessed to a certain depth toward the inside of the rotating part 202, and it can be understood that the embedding groove 203 forms an opening on the side surface of the rotating part 202 facing the positioning column 101.

[0094] The depth of the embedding groove 203 may be less than the wall thickness of the rotating part 202, and the embedding groove 203 may be in the shape of a blind hole; Figure 7B As shown, the depth of the embedding groove 203 can be equal to the wall thickness of the rotating part 202, and the embedding groove 203 can be in the shape of a through hole. The size of the embedding groove 203 needs to satisfy that when the swing arm 200 rotates, the inner surface of the embedding groove 203 does not interfere with the end of the synchronization rod 300 to avoid affecting the synchronous rotation effect. The specific shape and size of the embedding groove 203 are not limited in the embodiment of the present application.

[0095] The sliding part 201 is located in the embedded groove 203, and the sliding part 201 is connected between two opposite side surfaces of the embedded groove 203. The length direction of the sliding part 201 is parallel to the axial direction of the base 100, and the side surface of the embedded groove 203 is perpendicular to the axial direction of the base 100 and parallel to the x-axis direction. The bottom of the sliding part 201 can abut against the bottom surface of the embedded groove 203, or there can be a gap between the bottom surface of the groove, so as to achieve the sliding part 201 and the synchronization rod 300 to slide together, which is not limited here.

[0096] Exemplarily, in the first swing arm 200-1, the first rotating part 202-1 includes a first embedding groove 203-1; in the second swing arm 200-2, the second rotating part 202-2 includes a second embedding groove 203-2. The first embedding groove 203-1 and the second embedding groove 203-2 are symmetrical with respect to the positioning column 101, and both of their openings face the positioning column 101. The first sliding part 201-1 is located in the first embedding groove 203-1 and is connected to two opposite side surfaces of the first embedding groove 203-1; the second sliding part 201-2 is located in the second embedding groove 203-2 and is connected to two opposite side surfaces of the second embedding groove 203-2.

[0097] See again Figure 6 In some embodiments, the synchronization rod 300 is slidably connected to the positioning column 101. The length direction of the synchronization rod 300 is perpendicular to the length direction of the positioning column 101, and the synchronization rod 300 is perpendicular to the positioning column 101, so that the synchronization rod 300 can slide along the length direction of the positioning column 101.

[0098] Figure 8This is the first structural diagram of the synchronization rod provided in the embodiment of the present application. Figure 8 (a) shows the three-dimensional structure of the synchronization rod 300. Figure 8 (b) shows the side view structure of the synchronization rod 300 .

[0099] like Figure 8 As shown in (a), in one implementation, the synchronization rod 300 and the positioning column 101 can be slidably connected in a through-hole manner.

[0100] The synchronization rod 300 may include a through hole 302, and the through hole 302 is located at the center of the synchronization rod 300. Figure 5 and Figure 6 The synchronization rod 300 is sleeved on the outer side of the positioning column 101 through the through hole 302 , and the synchronization rod 300 is in a mirror image state relative to the positioning column 101 .

[0101] The shape and size of the through hole 302 are the same as those of the positioning post 101. Under the premise that the synchronization rod 300 slides relative to the positioning post 101 and does not get stuck, the through hole 302 and the positioning post 101 can achieve zero matching to maintain the balance of the synchronization rod 300. In this way, the entirety of the synchronization rod 300 can always slide synchronously along the z-axis direction without any sliding deviation or misalignment except along the z-axis direction, so as to ensure the synchronous rotation effect.

[0102] In another implementation, the synchronization rod 300 and the positioning column 101 can be slidably connected by means of a slide groove and a slider. For example, a slide groove is provided on one side surface of the positioning column 101, and a slider is provided on one side surface of the synchronization rod 300, and the length direction of the slide groove and the slider are both along the z-axis direction. The slider is embedded in the slide groove and can slide in the slide groove to realize the synchronization rod 300 sliding along the z-axis direction relative to the positioning column 101.

[0103] It should be noted that, under the premise that the synchronization rod 300 slides relative to the positioning column 101 along the z-axis direction, the sliding connection between the synchronization rod 300 and the positioning column 101 may also be other ways, which are not limited here.

[0104] Combination Figure 6 and Figure 8 As shown in (a) and (b), in some embodiments, both ends of the synchronization rod 300 include a sliding groove 301 respectively, and the through hole 302 is located between the two sliding grooves 301, and the two sliding grooves 301 are symmetrical with respect to the through hole 302.

[0105] The two sliding grooves 301 of the synchronization rod 300 correspond to the sliding parts 201 of the two swing arms 200 one by one, and the sliding grooves 301 abut against the corresponding sliding parts 201. The size of the sliding grooves 301 is adapted to the size of the sliding parts 201, so that the sliding parts 201 can be located in the sliding grooves 301 and abut against the inner surface of the sliding grooves 301, so that when the swing arm 200 rotates, the synchronization rod 300 can be driven to move synchronously through the coordinated movement of the sliding parts 201 and the sliding grooves 301.

[0106] Exemplarily, the end of the synchronization rod 300 adjacent to the first swing arm 200-1 includes a first sliding groove 301-1, and the end of the synchronization rod 300 adjacent to the second swing arm 200-2 includes a second sliding groove 301-2. The first sliding portion 201-1 of the first swing arm 200-1 abuts against the first sliding groove 301-1, and the first sliding portion 201-1 can slide in the first sliding groove 301-1; the second sliding portion 201-2 of the second swing arm 200-2 abuts against the second sliding groove 301-2, and the second sliding portion 201-2 can slide in the second sliding groove 301-2.

[0107] When the electronic device is folded or unfolded, each sliding groove 301 moves in coordination with its corresponding sliding part 201. For example, the first sliding part 201-1 slides in the first sliding groove 301-1, and the second sliding part 201-2 slides in the second sliding groove 301-2, driving the synchronization rod 300 to move relative to the positioning column 101 along the thickness direction of the base 100, so that the two swing arms 200 rotate synchronously around the base 100.

[0108] In some embodiments, the swing arm 200 and the synchronization rod 300 may slide in a gear rack sliding manner or a connecting rod sliding manner. Different types of sliding manners of the swing arm 200 and the synchronization rod 300 determine the structural shapes of the sliding portion 201 and the sliding groove 301 .

[0109] The synchronization mechanism provided in the embodiment of the present application adopts the first sliding mode, that is, the swing arm 200 and the synchronization rod 300 adopt the gear rack sliding mode. In the first sliding mode, Figure 7B As shown, the sliding part 201 is symmetrically structured with the radial direction of the first shaft hole 2021 as the center line, and the surface of the sliding part 201 is arc-shaped, so that the cross section of the sliding part 201 is tooth-shaped. The sliding part 201 can be regarded as a tooth in a gear. Correspondingly, the sliding groove 301 is a tooth-shaped groove.

[0110] like Figure 8As shown in (b), the end of the synchronization rod 300 further includes two tooth structures 303, which are arranged and connected along the thickness direction of the base 100 to form a sliding groove 301. The two tooth structures 303 can be regarded as two adjacent teeth in the rack.

[0111] Exemplary, combined Figure 6 The end of the synchronization rod 300 adjacent to the first swing arm 200-1 includes a first toothed structure 303-1 and a second toothed structure 303-2, which are arranged and connected along the z-axis direction. The first toothed structure 303-1 and the second toothed structure 303-2 are in a mirror image state relative to the x-axis direction, so that the two opposite surfaces of the first toothed structure 303-1 and the second toothed structure 303-2 form a first sliding groove 301-1, and the first sliding groove 301-1 is a toothed groove.

[0112] The end of the synchronization rod 300 adjacent to the second swing arm 200-2 includes a third toothed structure 303-3 and a fourth toothed structure 303-4, which are arranged and connected along the z-axis direction. The third toothed structure 303-3 and the fourth toothed structure 303-4 are in a mirror image state relative to the x-axis direction, so that the two opposite surfaces of the third toothed structure 303-3 and the fourth toothed structure 303-4 surround the second sliding groove 301-2, and the second sliding groove 301-2 is a toothed groove.

[0113] In this way, when the two swing arms 200 rotate relative to the base 100, based on the gear rack sliding mode, the toothed structures 303 at both ends of the synchronization rod 300 engage and slide with the toothed sliding parts 201 of the corresponding swing arms 200, thereby achieving synchronous movement of the synchronization rod 300 while the swing arms 200 rotate.

[0114] Fig. 9 yes Figure 5 Schematic diagram of the local structure of the A1 region.

[0115] Combination Figure 6 and Fig. 9 As shown, in some embodiments, the width of the sliding slot 301 of the synchronization rod 300 is the width of the corresponding tooth structure 303. The width W of the sliding slot 301 along the y-axis direction is 301 Less than or equal to the width W of the embedding groove 203 along the y-axis direction 203 .

[0116] In this way, the toothed structure 303 at the end of the synchronization rod 300 can be easily embedded in the corresponding embedding groove 203 , and the sliding groove 301 surrounded by the toothed structure 303 can be ensured to slide in coordination with the sliding portion 201 in the corresponding embedding groove 203 .

[0117] Since the embedding groove 203 is located in the middle of one end of the rotating part 202 near the positioning column 101, in order to achieve the matching sliding, the sliding groove 301 is located in the middle of the synchronization rod 300 along the y-axis direction. Both ends of the synchronization rod 300 are embedded in the embedding groove 203 of the corresponding swing arm 200 and are located in the middle of one end of the rotating part 202 near the positioning column 101. The synchronization rod 300 and the swing arm 200 are a matching structure in a chimeric manner.

[0118] Exemplarily, the first sliding groove 301-1 of the synchronization rod 300 is embedded in the first embedding groove 203-1 of the first swing arm 200-1, and is located in the middle of one end of the first rotating part 202-1 adjacent to the positioning column 101, and abuts against the first sliding part 201-1. The second sliding groove 301-2 is embedded in the second embedding groove 203-2 of the second swing arm 200-2, and is located in the middle of one end of the second rotating part 202-2 adjacent to the positioning column 101, and abuts against the second sliding part 201-2.

[0119] In this way, the synchronization rod 300 and the swing arm 200 are matched in an interlocking manner, and the end of the synchronization rod 300 is embedded in the rotating part 202 of the swing arm 200. The rotating part 202 of the swing arm 200 can be used to cover the end of the synchronization rod 300 (such as the tooth structure 303) to avoid the synchronization rod 300 from being offset relative to the rotating part 202 (in the embedding groove 203) other than meshing sliding during rotation. For example, the synchronization rod 300 is prevented from being offset along the y-axis direction to improve the synchronous rotation effect.

[0120] See again Figure 6 In some embodiments, when the rotating shaft mechanism is in an unfolded state, the synchronization mechanism is also in an unfolded state, the two swing arms 200 are in an unfolded state, and the first swing arm 200 - 1 and the second swing arm 200 - 2 are laid flat on opposite sides of the base 100 .

[0121] When the two swing arms 200 are in the unfolded state, the two sliding parts 201 are away from the base 100, and the synchronization rod 300 is located at the top of the positioning column 101. Exemplarily, the first sliding part 201-1 and the second sliding part 201-2 are located away from the base 100 and close to the display screen 30. Similarly, the positioning column 101 is also located away from the base 100 and close to the display screen 30; there is a first distance L between the positioning column 101 and the base 100. 1 .

[0122] Fig.10 yes Figure 5 The second structural diagram of the AA section. Fig.10 The cross-sectional structure of the synchronization mechanism in the folded state is shown.

[0123] like Fig.10 As shown, in some embodiments, when the rotating shaft mechanism rotates from the unfolded state to the folded state, the synchronization mechanism also rotates from the unfolded state to the folded state synchronously, and the first swing arm 200-1 and the second swing arm 200-2 rotate to a relative state.

[0124] When the two swing arms 200 rotate from the unfolded state to the folded state, the two sliding parts 201 are driven to move to a position close to the base 100 , and the synchronization rod 300 is driven to slide along the thickness direction of the base 100 to the bottom of the positioning column 101 .

[0125] Exemplarily, the first swing arm 200-1 and the second swing arm 200-2 are rotated from the unfolded state to the folded state by force, and the first sliding portion 201-1 of the first swing arm 200-1 rotates clockwise around the base 100 through the first pin shaft 102-1, and the second sliding portion 201-2 of the second swing arm 200-2 rotates counterclockwise around the base 100 through the second pin shaft 102-2. At the same time, the first sliding portion 201-1 of the first swing arm 200-1 rotates clockwise with the rotation of the first swing arm 200-1, and the second sliding portion 201-2 of the second swing arm 200-2 rotates counterclockwise with the rotation of the second swing arm 200-2.

[0126] The first sliding part 201-1 of the first swing arm 200-1 slides in the first sliding groove 301-1 of the synchronization rod 300, and the two tooth-shaped structures 303 at one end of the synchronization rod 300 slide relative to the first embedded groove 203-1; the second sliding part 201-2 of the second swing arm 200-2 slides in the second sliding groove 301-2 of the synchronization rod 300, and the two tooth-shaped structures 303 at the other end of the synchronization rod 300 slide relative to the second embedded groove 203-2. In this way, by using the meshing sliding of the sliding part 201 and the sliding groove 301, the rotation of the first sliding part 201-1 and the second sliding part 201-2 can drive the synchronization rod 300 to slide relative to the positioning column 101 along the z-axis direction toward the base 100, and then the synchronization rod 300 can be used to realize the synchronous rotation of the first swing arm 200-1 and the second swing arm 200-2.

[0127] When the synchronization mechanism is in the folded state, Fig.10 In the state shown, the first sliding part 201-1 and the second sliding part 201-2 rotate to a position close to the base 100, and the openings of the first embedding groove 203-1 and the second embedding groove 203-2 face the base 100. Similarly, the positioning column 101 also descends to a position close to the base 100; there is a second distance L between the positioning column 101 and the base 100. 2 , L 2 Less than L 1 .

[0128] When the rotating shaft mechanism rotates from the folded state to the unfolded state, the first sliding portion 201-1 of the first swing arm 200-1 rotates counterclockwise around the base 100 through the first pin shaft 102-1, and the second sliding portion 201-2 of the second swing arm 200-2 rotates clockwise around the base 100 through the second pin shaft 102-2. At the same time, the first sliding portion 201-1 of the first swing arm 200-1 rotates counterclockwise as the first swing arm 200-1 rotates, and the second sliding portion 201-2 of the second swing arm 200-2 rotates clockwise as the second swing arm 200-2 rotates.

[0129] The first sliding portion 201-1 of the first swing arm 200-1 slides in the first sliding groove 301-1 of the synchronization rod 300; the second sliding portion 201-2 of the second swing arm 200-2 slides in the second sliding groove 301-2 of the synchronization rod 300. In this way, the rotation of the first sliding portion 201-1 and the second sliding portion 201-2 drives the synchronization rod 300 to slide relative to the positioning column 101 along the z-axis direction in a direction away from the base 100.

[0130] When the synchronization mechanism rotates to the unfolded state, Figure 6 In the state shown, the first sliding part 201-1 and the second sliding part 201-2 rotate to a position close to the display screen 30, and similarly, the positioning column 101 also rises to a position close to the display screen 30; the distance between the positioning column 101 and the base 100 increases to a first distance L 1 .

[0131] When the rotating shaft mechanism switches between the unfolded state and the folded state, the synchronization rod 300 rises or falls relative to the positioning column 101, and the synchronization rod 300 engages and slides with the two swing arms 200 to achieve the synchronous rotation of the two swing arms 200 on both sides of the base 100. The corresponding schematic diagram can be seen in Figure 6 and Figure 8 Status shown.

[0132] The synchronization mechanism provided in the embodiment of the present application is connected by a synchronization rod 300 with two swing arms 200, and the synchronization rod 300 slides along the z-axis direction relative to the positioning column 101. The two swing arms 200 are slidably connected to the two ends of the synchronization rod 300, so that the rotation angles of the two swing arms 200 around the base 100 are consistent, thereby realizing the synchronous rotation of the two swing arms 200, so that the shaft mechanism can be smoothly opened and closed, and the user experience is improved. The synchronization mechanism can realize the synchronous rotation of the two swing arms 200 by the rise and fall of the synchronization rod 300 relative to the positioning column 101. The structure of the synchronization mechanism is simple and easy to process. The positioning column 101 will not occupy too much space in the z-axis direction, and the miniaturization of the synchronization mechanism can be realized. When the synchronization mechanism is miniaturized, its own strength is not affected, and it is not easy to break during the folding process; and the synchronization mechanism will not move along the y-axis direction when realizing the synchronization function, and thus will not occupy the space of the shaft mechanism in the y-axis direction. It can be seen that the synchronization mechanism can realize the synchronous rotation of the two swing arms 200 while also being miniaturized, and will not occupy too much space of the shaft mechanism, thereby realizing the miniaturization of the shaft mechanism and contributing to the development of lighter and thinner electronic devices.

[0133] Fig.11 is a second three-dimensional structural schematic diagram of the synchronization mechanism provided in an embodiment of the present application; Fig.12 This is a second structural schematic diagram of the rotating part provided in the embodiment of the present application.

[0134] like Fig.11 and Fig.12 As shown, the synchronization mechanism provided in the embodiment of the present application is different from the synchronization mechanism provided in the aforementioned embodiment in the structure of the rotating part 202 of the swing arm 200, and the matching method and sliding method between the swing arm 200 and the synchronization rod 300. The remaining structures can refer to the corresponding contents of the synchronization mechanism provided in the aforementioned embodiment and will not be repeated here.

[0135] Fig.13A is a second three-dimensional structural schematic diagram of the swing arm provided in an embodiment of the present application; Fig. 13B is a partial side structural schematic diagram of a swing arm provided in an embodiment of the present application; Fig. 13C yes Fig.13A Schematic diagram of the local enlarged structure of area D in the middle.

[0136] like Fig.13A , Fig. 13B and Fig. 13C As shown, when the swing arm 200 and the synchronization rod 300 adopt the second matching mode, that is, the clamping mode, the rotating portion 202 of the swing arm 200 may include a groove 204 .

[0137] The groove 204 is located on a side surface of the rotating portion 202 and extends from the end surface of the rotating portion 202 to the inside with a first width W. 1The groove 204 can be recessed from one side surface of the rotating part 202 to the inside of the rotating part 202 by a certain depth, and from the end surface of the rotating part 202 to the inside of the rotating part 202 by a certain width W. 1 It can be understood that the groove 204 is located at the end of the rotating part 202 along the y-axis direction, and the groove 204 forms an opening at the end surface and adjacent surface of the rotating part 202. The end surface of the rotating part 202 is perpendicular to the axial direction of the base 100.

[0138] The depth of the groove 204 can be less than the wall thickness of the rotating part 202, or can be equal to the wall thickness of the rotating part 202. The size of the groove 204 must be such that when the swing arm 200 rotates, the inner surface of the groove 204 does not interfere with the end of the synchronization rod 300, so as to avoid affecting the synchronous rotation effect. The specific shape and size of the groove 204 are not limited in the embodiment of the present application.

[0139] The sliding part 201 is located in the groove 204, one end of the sliding part 201 is connected to the side wall 2041 of the groove 204, and the other end extends along the axial direction relative to the side wall 2041. The side wall 2041 is perpendicular to the axial direction of the base 100 and parallel to the x-axis direction.

[0140] Fig.14 yes Fig.12 The first structural diagram of the CC section. Fig.14 The structure of the synchronization mechanism is shown in the deployed state.

[0141] like Fig.14 As shown, the groove 204 is located on the side surface of the rotating part 202 facing the positioning column 101. The groove 204 can be recessed to a certain depth from the side surface of the rotating part 202 facing the positioning column 101 to the inside of the rotating part 202, and recessed to a certain width W from the end surface of the rotating part 202 to the inside of the rotating part 202. 1 And formed.

[0142] Exemplarily, in the first swing arm 200-1, the first rotating part 202-1 includes a first groove 204-1; in the second swing arm 200-2, the second rotating part 202-2 includes a second groove 204-2. The first groove 204-1 and the second groove 204-2 are symmetrical with respect to the positioning column 101, and one of the openings of the first groove 204-1 and one of the openings of the second groove 204-2 are both facing the positioning column 101. The first sliding part 201-1 is located in the first groove 204-1, one end of the first sliding part 201-1 is connected to the first side wall of the first groove 204-1 (not shown in the figure), and the other end extends along the axial direction relative to the first side wall. The second sliding part 201-2 is located in the second groove 204-2, one end of the second sliding part 201-2 is connected to the second side wall of the second groove 204-2 (not shown in the figure), and the other end extends along the axial direction relative to the second side wall.

[0143] Fig.15 is a second structural diagram of the synchronization rod provided in the embodiment of the present application. Fig.15 (a) shows the three-dimensional structure of the synchronization rod 300. Fig.15 (b) shows the side view structure of the synchronization rod 300 .

[0144] like Fig.15 As shown in (a), when the swing arm 200 and the synchronization rod 300 adopt the second matching mode, that is, the clamping mode, the combination Fig. 13C Since the groove 204 is located at the end of the rotating part 202 adjacent to the positioning column 101 along the y-axis direction, in order to achieve cooperative sliding, the two ends of the synchronization rod 300 are adjacent to the side surface of the synchronization rod 300 along the x-axis direction. In other words, the sliding groove 301 is located at the end of the synchronization rod 300 along the y-axis direction, and the synchronization rod 300 is a "convex" structure.

[0145] Both ends of the synchronization rod 300 are embedded in the corresponding grooves 204 of the swing arm 200 and are located at one end of the rotating portion 202 adjacent to the positioning column 101 . The synchronization rod 300 and the swing arm 200 are a matching structure in a clamping manner.

[0146] In some embodiments, the synchronization mechanism provided in the embodiments of the present application adopts a second sliding mode, that is, the swing arm 200 and the synchronization rod 300 adopt a connecting rod sliding mode. In the second sliding mode, Fig. 13B As shown, the sliding portion 201 may be a circular shaft or a cylindrical structure, and the cross section of the sliding portion 201 is circular. Correspondingly, the sliding groove 301 is an arc groove.

[0147] like Fig.15 As shown in (b), the sliding groove 301 is recessed from the end of the synchronization rod 300 to the inside by a first depth H 1, and the side surface of the end portion is recessed along the y-axis direction toward the inside of the synchronization rod 300 by a second width W 2 And formed.

[0148] The sliding groove 301 is an arc groove to adapt to the sliding part 201 with a circular cross section. The sliding groove 301 is inclined relative to the x-axis direction. Fig.14 , the center lines of the two sliding grooves 301 form an angle away from the base 100. Exemplarily, the center line of the first sliding groove 301-1 and the center line of the second sliding groove 301-2 form an angle α 1 , angle α 1 The opening is away from the base 100, and the angle α 1 It is an obtuse angle.

[0149] In this way, when the two swing arms 200 rotate relative to the base 100, the first sliding part 201-1 of the first swing arm 200-1 slides in the first sliding groove 301-1, and the second sliding part 201-2 of the second swing arm 200-2 slides in the second sliding groove 301-2, so as to drive the synchronization rod 300 to move synchronously.

[0150] Fig.16 yes Fig.12 Schematic diagram of the local structure of the middle C1 region.

[0151] Combination Fig.14 and Fig.16 , exemplarily, the synchronization rod 300 and the swing arm 200 are connected in a left-right state, and the first sliding groove 301-1 of the synchronization rod 300 is embedded in the first groove 204-1 of the first swing arm 200-1, and is located at the end position of the first rotating part 202-1, and abuts against the first sliding part 201-1. The second sliding groove 301-2 is embedded in the second groove 204-2 of the second swing arm 200-2, and is located at the end position of the second rotating part 202-2, and abuts against the second sliding part 201-2.

[0152] The sliding part 201 and the synchronization rod 300 are both located at the end of the rotating part 202, and the synchronization rod 300 is engaged with the rotating part 202 of the swing arm 200. The width of the synchronization rod 300 along the y-axis direction may not be limited by the width of the groove 204 along the y-axis direction, and the length of the sliding part 201 along the y-axis direction is also not limited by the width of the groove 204 along the y-axis direction.

[0153] In this way, the synchronization rod 300 and the swing arm 200 are matched in a snap-fit ​​manner. Based on the internal space size and layout of the synchronization mechanism, the structures and dimensions of the swing arm 200 and the synchronization rod 300 can be independently and adaptively designed on the premise that the synchronization rod 300 and the sliding part 201 in the groove 204 can be conveniently matched for connecting rod sliding, thereby making the structural layout of the synchronization mechanism more compact and facilitating miniaturization.

[0154] In some embodiments, see again Fig.14 When the synchronization mechanism is in the unfolded state, the first swing arm 200-1 and the second swing arm 200-2 are laid flat on opposite sides of the base 100. In this scenario, the sliding parts 201 of the two swing arms 200 are away from the base 100, and the synchronization rod 300 is located on the top of the positioning column 101. Exemplarily, the first sliding part 201-1 and the second sliding part 201-2 are located away from the base 100 and adjacent to the display screen 30. Similarly, the positioning column 101 is also located away from the base 100 and adjacent to the display screen 30; there is a first distance L between the positioning column 101 and the base 100. 1 .

[0155] Fig.17 yes Fig.12 The second structural diagram of the CC section. Fig.17 The structure of the synchronization mechanism is shown in a folded state.

[0156] like Fig.17 As shown, in some embodiments, when the rotating shaft mechanism rotates from the unfolded state to the folded state, the synchronization mechanism also rotates from the unfolded state to the folded state synchronously, and the first swing arm 200-1 and the second swing arm 200-2 rotate to a relative state.

[0157] When the two swing arms 200 rotate from the unfolded state to the folded state, the two sliding parts 201 are driven to move to a position close to the base 100 , and the synchronization rod 300 is driven to slide along the thickness direction of the base 100 to the bottom of the positioning column 101 .

[0158] Exemplarily, the first swing arm 200-1 and the second swing arm 200-2 are rotated from the unfolded state to the folded state by force, and the first sliding portion 201-1 of the first swing arm 200-1 rotates clockwise around the base 100 through the first pin shaft 102-1, and the second sliding portion 201-2 of the second swing arm 200-2 rotates counterclockwise around the base 100 through the second pin shaft 102-2. At the same time, the first sliding portion 201-1 of the first swing arm 200-1 rotates clockwise with the rotation of the first swing arm 200-1, and the second sliding portion 201-2 of the second swing arm 200-2 rotates counterclockwise with the rotation of the second swing arm 200-2.

[0159] The first sliding part 201-1 of the first swing arm 200-1 slides in the first sliding groove 301-1 of the synchronization rod 300, and one end of the synchronization rod 300 slides relative to the first groove 204-1; the second sliding part 201-2 of the second swing arm 200-2 slides in the second sliding groove 301-2 of the synchronization rod 300, and the other end of the synchronization rod 300 slides relative to the second groove 204-2. In this way, by sliding the connecting rod of the sliding part 201 and the sliding groove 301, the rotation of the first sliding part 201-1 and the second sliding part 201-2 can drive the synchronization rod 300 to slide relative to the positioning column 101 along the z-axis direction toward the base 100, and then the synchronization rod 300 can be used to realize the synchronous rotation of the first swing arm 200-1 and the second swing arm 200-2.

[0160] When the synchronization mechanism is in the folded state, Fig.17 In the state shown, the first sliding part 201-1 and the second sliding part 201-2 rotate to a position close to the base 100, and the openings of the first groove 204-1 and the second groove 204-2 face the base 100. Similarly, the positioning column 101 also descends to a position close to the base 100; there is a second distance L between the positioning column 101 and the base 100. 2 , L 2 Less than L 1 .

[0161] When the rotating shaft mechanism rotates from the folded state to the unfolded state, the first sliding portion 201-1 of the first swing arm 200-1 rotates counterclockwise around the base 100 through the first pin shaft 102-1, and the second sliding portion 201-2 of the second swing arm 200-2 rotates clockwise around the base 100 through the second pin shaft 102-2. At the same time, the first sliding portion 201-1 of the first swing arm 200-1 rotates counterclockwise as the first swing arm 200-1 rotates, and the second sliding portion 201-2 of the second swing arm 200-2 rotates clockwise as the second swing arm 200-2 rotates.

[0162] The first sliding portion 201-1 of the first swing arm 200-1 slides in the first sliding groove 301-1 of the synchronization rod 300; the second sliding portion 201-2 of the second swing arm 200-2 slides in the second sliding groove 301-2 of the synchronization rod 300. In this way, the rotation of the first sliding portion 201-1 and the second sliding portion 201-2 drives the synchronization rod 300 to slide relative to the positioning column 101 along the z-axis direction in a direction away from the base 100.

[0163] When the synchronization mechanism rotates to the unfolded state, Fig.14In the state shown, the first sliding part 201-1 and the second sliding part 201-2 rotate to a position close to the display screen 30, and similarly, the positioning column 101 also rises to a position close to the display screen 30; the distance between the positioning column 101 and the base 100 increases to a first distance L 1 .

[0164] When the rotating shaft mechanism switches between the unfolded state and the folded state, the synchronization rod 300 rises or falls relative to the positioning column 101, and the synchronization rod 300 slides with the two swing arms 200 to achieve the synchronous rotation of the two swing arms 200 on both sides of the base 100. The corresponding schematic diagram can be seen in Fig.14 and Fig.17 Status shown.

[0165] The synchronization mechanism provided in the embodiment of the present application is connected by a synchronization rod 300 with two swing arms 200, and the synchronization rod 300 slides along the z-axis direction relative to the positioning column 101. The two swing arms 200 are slidably connected to the two ends of the synchronization rod 300, so that the rotation angles of the two swing arms 200 around the base 100 are consistent, thereby realizing the synchronous rotation of the two swing arms 200, so that the shaft mechanism can be smoothly opened and closed, and the user experience is improved. The synchronization mechanism can realize the synchronous rotation of the two swing arms 200 by the rise and fall of the synchronization rod 300 relative to the positioning column 101. The structure of the synchronization mechanism is simple and easy to process. The positioning column 101 will not occupy too much space in the z-axis direction, and the miniaturization of the synchronization mechanism can be realized. When the synchronization mechanism is miniaturized, its own strength is not affected, and it is not easy to break during the folding process; and the synchronization mechanism will not move along the y-axis direction when realizing the synchronization function, and thus will not occupy the space of the shaft mechanism in the y-axis direction. It can be seen that the synchronization mechanism can realize the synchronous rotation of the two swing arms 200 while also being miniaturized, and will not occupy too much space of the shaft mechanism, thereby realizing the miniaturization of the shaft mechanism and contributing to the development of lighter and thinner electronic devices.

[0166] See again Figure 8 and Fig.15 As shown, in some embodiments, the synchronization bar 300 may include a first surface 304 facing away from the base 100; the first surface 304 is curved toward the base 100. The degree of curvature of the first surface 304 is the same as the degree of curvature of the display screen 30 when the electronic device is folded.

[0167] In this way, the curved first surface 304 can be used to adapt to the curvature of the display screen 30, so as to prevent the synchronization bar 300 from blocking the curvature of the display screen 30. By using the curved first surface 304 to avoid the display screen 30, the display screen 30 can be prevented from being damaged by contact with the synchronization bar 300.

[0168] In some embodiments, Figure 6In the synchronization mechanism shown, the swing arm 200 and the synchronization rod 300 cooperate by using the embedding groove 203 to achieve the interlocking cooperation, and the swing arm 200 and the synchronization rod 300 slide in a gear rack sliding manner. Fig.14 In the synchronization mechanism shown, the swing arm 200 and the synchronization rod 300 cooperate in a manner of snap-fitting using the groove 204 , and the swing arm 200 and the synchronization rod 300 slide in a connecting rod sliding manner.

[0169] In the synchronization mechanism provided in other embodiments, the swing arm 200 and the synchronization rod 300 may be matched by using the embedded groove 203 to achieve the interlocking fit, and the swing arm 200 and the synchronization rod 300 may slide in a connecting rod sliding manner. Alternatively, the swing arm 200 and the synchronization rod 300 may be matched by using the groove 204 to achieve the snap fit, and the swing arm 200 and the synchronization rod 300 may slide in a gear rack sliding manner. The synchronization mechanism provided in the above embodiments, the corresponding structure and the method for achieving synchronous rotation may refer to Figure 6 and Fig.14 The contents shown in the related drawings are not repeated here.

[0170] An embodiment of the present application also provides a rotating shaft mechanism, including: door panels, and a synchronization mechanism provided by any of the aforementioned embodiments; the two door panels are located on opposite sides of the base 100 along the axial direction, and the two door panels correspond one-to-one to the two swing arms 200. Each door panel is connected to the base 100 through the swing arm 200 opposite to it, and is configured to rotate around the base 100.

[0171] It should be noted that the structure of the rotating shaft mechanism can refer to Figure 2 The structure of the rotating shaft assembly shown is not described in detail here.

[0172] The rotating shaft mechanism provided in the embodiment of the present application includes the synchronization mechanism provided in any of the above embodiments, and the synchronization mechanism has a simple structure and is easy to process. The synchronization mechanism can realize the synchronous rotation of the two swing arms 200 and can also be miniaturized without occupying too much space of the rotating shaft mechanism, thereby realizing the miniaturization of the rotating shaft mechanism and contributing to the development of lightweight and thin electronic devices.

[0173] See again Figure 1 The embodiment of the present application also provides an electronic device, including a display screen 30, a first body 10, a second body 20 and a hinge mechanism as provided in the aforementioned embodiment; the first body 10 and the second body 20 are located on opposite sides of the axis direction of the hinge mechanism, and the first body 10 and the second body 20 are respectively connected to the hinge mechanism; the display screen 30 covers the first body 10, the second body 20 and the hinge mechanism, and the first body 10 and the second body 20 rotate with the bending or unfolding of the hinge mechanism to drive the display screen 30 to bend or unfold.

[0174] It should be noted that the structure of the electronic device can refer to Figure 1 The structure of the electronic device shown is not described in detail here.

[0175] The electronic device provided in the embodiment of the present application includes the hinge mechanism provided in the aforementioned embodiment. The hinge mechanism can be miniaturized and will not occupy too much space of the electronic device, thus contributing to the development of lighter and thinner electronic devices.

[0176] It should be noted that those skilled in the art will readily come up with other embodiments of the present application after considering the specification and practicing the application disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary technical means in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope of the present application is indicated by the following claims.

[0177] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A synchronization mechanism, characterized in that: include: A base (100) comprises a positioning column (101), wherein the length direction of the positioning column (101) is parallel to the thickness direction of the base (100); The swing arms (200) are located on opposite sides of the positioning column (101) along the axial direction of the base (100), and the axial direction of the base (100) is perpendicular to the thickness direction of the base (100); each of the swing arms (200) comprises a sliding portion (201) and a rotating portion (202), the rotating portion (202) is rotatably connected to the base (100) via a pin shaft (102), and the rotating portion (202) comprises a groove (204), and the groove (204) is located in the rotating portion (201). A surface of the rotating portion (202) faces the positioning column (101), and a first width extends inwardly from the end surface of the rotating portion (202); one end of the sliding portion (201) is connected to the side wall (2041) of the groove (204), and the other end extends along the axial direction relative to the side wall (2041); the sliding portion (201) is located in the radial direction of the pin shaft (102), the two sliding portions (201) are symmetrical relative to the positioning column (101), and the cross-section of the sliding portion (201) is circular; A synchronization rod (300) is slidably connected to the positioning column (101); both ends of the synchronization rod (300) respectively include a sliding groove (301), the two sliding grooves (301) correspond to the two sliding parts (201) one by one, the sliding grooves (301) abut against the corresponding sliding parts (201), the sliding grooves (301) are arc grooves, and the center lines of the two sliding grooves (301) form an angle away from the base (100); The coordinated movement of each sliding groove (301) and the corresponding sliding portion (201) drives the synchronization rod (300) to move relative to the positioning column (101) along the thickness direction of the base (100), so that the two swing arms (200) rotate synchronously around the base (100).

2. The synchronization mechanism according to claim 1, characterized in that: The synchronization rod (300) further comprises a through hole (302), wherein the through hole (302) is located between the two sliding grooves (301); The synchronization rod (300) is sleeved on the outside of the positioning column (101) through the through hole (302); The length direction of the synchronization rod (300) is perpendicular to the length direction of the positioning column (101).

3. The synchronization mechanism according to claim 1, characterized in that: When the two swing arms (200) are in an unfolded state, the two sliding parts (201) are away from the base (100), and the synchronization rod (300) is located on the top of the positioning column (101); When the two swing arms (200) rotate from an unfolded state to a folded state, the two sliding parts (201) are driven to move to a position close to the base (100), and the synchronization rod (300) is driven to slide along the thickness direction of the base (100) to the bottom of the positioning column (101).

4. The synchronization mechanism according to claim 1, characterized in that: The sliding part (201) is located on the rotating part (202); The length direction of the sliding portion (201) is parallel to the axial direction of the base (100), and the radial direction of the pin shaft (102) is perpendicular to the axial direction of the base (100).

5. The synchronization mechanism according to claim 1, characterized in that: The sliding groove (301) is formed by the end of the synchronization rod (300) being recessed inwardly to a first depth.

6. The synchronization mechanism according to claim 1, characterized in that: The synchronization rod (300) comprises a first surface (304) facing away from the base (100); The first surface (304) is curved towards the base (100).

7. A rotating shaft mechanism, characterized in that: Comprising: a door panel, and a synchronization mechanism as described in any one of claims 1 to 6; The two door panels are located on opposite sides of the base (100) of the synchronization mechanism along the axial direction, the two door panels correspond to the two swing arms (200) one by one, and each door panel is connected to the base (100) via the swing arm (200) opposite thereto, and is configured to be rotatable around the base (100).

8. An electronic device, characterized in that: It comprises a display screen, a first body, a second body and the hinge mechanism as claimed in claim 7; The first body and the second body are located on opposite sides of the axis direction of the rotating shaft mechanism, and the first body and the second body are respectively connected to the rotating shaft mechanism; The display screen covers the first body, the second body and the hinge mechanism, and the first body and the second body rotate as the hinge mechanism is bent or unfolded to drive the display screen to bend or unfold.

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