WO2021159899A1

WO2021159899A1 - Synchronous rotation mechanism, collapsible housing assembly, and collapsible electronic device

Info

Publication number: WO2021159899A1
Application number: PCT/CN2021/071106
Authority: WO
Inventors: 贾玉虎
Original assignee: Oppo广东移动通信有限公司
Priority date: 2020-02-12
Filing date: 2021-01-11
Publication date: 2021-08-19
Also published as: CN211550435U

Abstract

The present application discloses a synchronous rotation mechanism, a collapsible housing assembly, and a collapsible electronic device. The synchronous rotation mechanism comprises: a first connecting rod and a second connecting rod disposed opposite each other; a synchronization gear assembly, comprising a first rotation portion and a second rotation portion engaging with each other; a first rotation assembly, comprising a third rotation portion and a fourth rotation portion engaging with each other, the third rotation portion being connected to the first connecting rod, and the fourth rotation portion being coaxially connected to the first rotation portion; and a second rotation assembly, comprising a fifth rotation portion and a sixth rotation portion engaging with each other, the fifth rotation portion being connected to the second connecting rod, and the sixth rotation portion being coaxially connected to the second rotation portion. When the first connecting rod rotates, the first rotation assembly drives, under the action of the first connecting rod, the synchronization gear assembly to rotate, so as to drive the second rotation assembly to rotate, such that the second connecting rod rotates synchronously and in the opposite direction to the first connecting rod. The present application provides the synchronous rotation mechanism allowing housings on two sides to rotate synchronously, the collapsible housing assembly, and the collapsible electronic device.

Description

Synchronous rotation mechanism, foldable shell assembly and foldable electronic equipment

Technical field

This application relates to the field of electronic technology, in particular to a synchronous rotation mechanism, a foldable housing assembly and a foldable electronic device.

Background technique

A foldable electronic device with a folding screen can fold a large screen, flatten the foldable electronic device to meet the viewing experience of the large screen, and fold the foldable electronic device to reduce its volume and have portability. However, how to realize that the housings on both sides of the foldable electronic device can rotate synchronously has become a technical problem that needs to be solved to further improve the performance of the foldable electronic device.

Summary of the invention

The present application provides a synchronous rotation mechanism that enables the housings on both sides of a foldable electronic device to rotate synchronously, a foldable housing assembly, and a foldable electronic device.

In the first aspect, this application provides a synchronous rotation mechanism, including:

The first connecting rod and the second connecting rod arranged oppositely;

The synchronous gear assembly includes a first rotating part and a second rotating part that are meshed with each other;

The first rotating component includes a third rotating part and a fourth rotating part engaged with each other, the third rotating part is connected with the first connecting rod, and the fourth rotating part is coaxially connected with the first rotating part ;and

The second rotating component includes a fifth rotating part and a sixth rotating part engaged with each other, the fifth rotating part is connected with the second connecting rod, and the sixth rotating part is coaxially connected with the second rotating part ；

When the first connecting rod rotates, the first rotating assembly drives the synchronization gear assembly to rotate under the action of the first connecting rod to drive the second rotating assembly to rotate, so that the second connecting rod The rod rotates synchronously and reversely relative to the first connecting rod.

In a second aspect, the present application provides a foldable housing assembly, including a first housing, a second housing, and the synchronous rotation mechanism. The first housing is connected to the first connecting rod away from the One end of the first rotating assembly, the second housing is connected to an end of the second connecting rod away from the second rotating assembly, when the first housing rotates, the first connecting rod is at the Under the action of the first housing, the first rotating assembly, the synchronization gear assembly, the second rotating assembly, and the second connecting rod are driven to rotate, so that the second housing is relative to the first The housing rotates synchronously and reversely.

In a third aspect, the present application provides a foldable electronic device, including a display screen and the foldable housing assembly, the display screen is provided in the first housing, the second housing, and the On the synchronous rotation mechanism, the display screen can be unfolded as the first housing and the second housing are unfolded, and folded as the first housing and the second housing are closed .

The first rotating component provided in this embodiment synchronously transmits the rotation of the first connecting rod to the first rotating part of the synchronous gear assembly. The first rotating part meshes with the second rotating part to realize synchronous rotation transmission. The rotation of the two rotating parts is synchronously transmitted to the rotation of the second connecting rod. In this way, the synchronous rotating mechanism provided in this embodiment realizes the synchronous and reverse rotation of the first connecting rod and the second connecting rod, and improves the rotation cooperation of the foldable electronic device. Accuracy and reliability.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present application more clearly, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative work, other drawings can be obtained from these drawings.

FIG. 1 is a three-dimensional schematic diagram of a foldable electronic device provided by an embodiment of the present application;

FIG. 2 is a top view of the foldable electronic device in FIG. 1;

FIG. 3 is a schematic diagram of the structure of the foldable housing assembly in FIG. 1;

Fig. 4 is a schematic structural diagram of the synchronous rotation mechanism in Fig. 3;

FIG. 5 is a schematic view showing the structure of the synchronous rotation mechanism in FIG. 4;

Fig. 6 is a partial structural diagram of the synchronous rotation mechanism in Fig. 4;

FIG. 7 is a partial structural diagram of the first type of first rotating component in FIG. 4;

Figure 8 is a cross-sectional view of the foldable housing assembly in Figure 3 in a flattened state;

FIG. 9 is a cross-sectional view of the foldable housing assembly in FIG. 3 in a half-bended state;

Figure 10 is a cross-sectional view of the foldable housing assembly in Figure 3 in a folded state;

Fig. 11 is a partial structural diagram of the second type of first rotating assembly in Fig. 2;

Fig. 12 is a partial structural diagram of the third type of the first rotating assembly in Fig. 2.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by a person of ordinary skill in the art without creative work shall fall within the protection scope of this application. In addition, all the embodiments or implementation manners of the present application can be adaptively combined arbitrarily to form new embodiments.

A foldable electronic device provided by an embodiment of the present application may be an electronic device with a folding screen. Folding screen is a kind of display screen, which has the characteristics of being foldable. The user can trigger the foldable electronic device to execute a corresponding event by performing a folding operation on the folding screen, so as to improve the efficiency of human-computer interaction.

Exemplarily, the folding screen may be a flexible folding screen. The flexible folding screen can be folded along the folding edge to form multiple (two or more) screens. Exemplarily, the folding screen may also be a multi-screen (hard screen) folding screen. The multi-screen folding screen may include multiple (two or more) screens (hard screens). These multiple screens can be connected by folding shafts in sequence. Each screen can be rotated around a folding axis connected to it to realize the folding of multi-screen folding screens. In this application, a folding screen that is folded in half along a folding edge, and the folding screen is a flexible folding screen, is taken as an example, and details are not described later.

Exemplarily, the foldable electronic device in the embodiment of the present application may be a mobile phone, a tablet computer, a desktop computer, a laptop computer, an e-reader, a handheld computer, an electronic display screen, a notebook computer, an ultra mobile personal computer (ultra mobile personal computer). -mobile personal computer, UMPC), netbooks, as well as cellular phones, personal digital assistants (PDAs), augmented reality (AR)\virtual reality (VR) devices, media players, watches, Necklaces, glasses, earphones and other devices with folding screens. It can be understood that the foldable electronic device may also be a foldable non-display device. In this embodiment, a folding screen mobile phone is taken as an example for description.

The foldable electronic device according to the embodiment of the present application will be described in detail below with reference to the accompanying drawings.

Please refer to FIG. 1 and FIG. 2. FIG. 1 is a schematic structural diagram of a foldable electronic device according to an embodiment of the application. In this embodiment, the length direction of the foldable electronic device 100 is defined as the Y-axis direction. The width direction of the foldable electronic device 100 is defined as the X-axis direction. The thickness direction of the foldable electronic device 100 is defined as the Z-axis direction. The folding axis of the foldable electronic device 100 is along the Y-axis direction.

1 and 2, the foldable electronic device 100 at least includes a foldable housing assembly 101 and a flexible display screen 102 provided on the foldable housing assembly 101.

Please refer to FIG. 3, the foldable housing assembly 101 at least includes a synchronous rotation mechanism 10, a first housing 20 and a second housing 30. The synchronous rotation mechanism 10, the first housing 20, and the second housing 30 are sequentially arranged along the X-axis direction. It should be noted that FIG. 3 shows that the synchronous rotation mechanism 10 is connected between the first housing 20 and the second housing 30. Of course, in other embodiments, the synchronous rotation mechanism 10 may be provided in the rotating shaft assembly. The rotating shaft assembly encapsulates the synchronous rotating mechanism 10, and the rotating shaft assembly is spliced with the first housing 20 and the second housing 30 to form a complete housing of the foldable electronic device 100 to ensure the appearance integrity of the foldable electronic device 100.

Please refer to FIG. 3, the first housing 20 and the second housing 30 are respectively connected to the synchronous rotation mechanism 10 from opposite sides of the synchronous rotation mechanism 10 to form the foldable housing assembly 101 of the foldable electronic device 100. The flexible display screen 102 is provided on the first housing 20, the synchronous rotation mechanism 10 and the second housing 30. In other words, the flexible display screen 102 is provided on the foldable housing assembly 101 and can be folded as the foldable housing assembly 101 is folded (or the first housing 20 and the second housing 30 are closed) , And flatten with the flattening of the foldable housing assembly 101 (or flattening of the first housing 20 and the second housing 30). In this application, the flexible display screen 102 may be folded in the form of outward bending or inward bending. In this embodiment, the flexible display screen 102 is folded in the form of inward bending for illustration, which will not be repeated hereafter.

It is understandable that the foldable electronic device 100 also includes a battery, a main board, a camera, a microphone, a receiver, a speaker, a face recognition module, a fingerprint recognition module, etc., which are arranged between the flexible display 102 and the foldable housing assembly 101. Such devices that can implement the basic functions of a mobile phone will not be repeated in this embodiment.

Hereinafter, the synchronous rotation mechanism 10 of the embodiment of the present application will be described in detail with reference to the accompanying drawings.

Please refer to FIG. 4, the synchronous rotating mechanism 10 includes a bracket 1, a first connecting rod 2, a second connecting rod 3, a synchronous gear assembly 4, a first rotating assembly 5 and a second rotating assembly 6.

Please refer to FIG. 3, when the first housing 20 and the second housing 30 are flattened, a receiving space 103 is formed on the side facing the flexible display screen 102, and the bracket 1 is located in the receiving space 103.

Please refer to FIG. 4, the bracket 1 has an accommodating space 104 for accommodating the synchronous gear assembly 4, the first rotating assembly 5 and the second rotating assembly 6.

Please refer to FIG. 4 and FIG. 5, the first connecting rod 2 and the second connecting rod 3 are arranged opposite to each other. Specifically, the first link 2 and the second link 3 both extend along the X-axis direction. The end of the first link 2 close to the second link 3 is the first end 21 of the first link 2. The first end 21 of the first connecting rod 2 is located in the accommodating space 104 of the bracket 1, and the end of the first connecting rod 2 away from the second connecting rod 3 is the second end 22 of the first connecting rod 2. The second end 22 of the first connecting rod 2 is located outside the accommodating space 104 of the bracket 1 and is fixedly connected to the first housing 20 (see FIG. 3). The fixed connection methods include, but are not limited to, screw connection, welding, and adhesion. Glue bonding, etc. The end of the second link 3 close to the first link 2 is the first end 31 of the second link 3. The first end 31 of the second connecting rod 3 is located in the accommodating space 104 of the bracket 1. The first end 31 of the second link 3 and the first end 21 of the first link 2 are parallel in the X-axis direction but not arranged collinearly. The end of the second connecting rod 3 away from the first connecting rod 2 is the second end 32 of the second connecting rod 3. The second end 32 of the second connecting rod 3 is fixedly connected to the second housing 30 (please refer to FIG. 3), and the fixed connection methods include, but are not limited to, screw connection, welding, adhesive bonding, and the like. The materials of the first connecting rod 2 and the second connecting rod 3 include, but are not limited to, metal, hard plastic, and the like.

Please refer to FIGS. 4 and 5, the first rotating assembly 5, the synchronous gear assembly 4 and the second rotating assembly 6 are disposed in the accommodating space 104 of the bracket 1. The synchronization gear assembly 4 is located between the first end 21 of the first connecting rod 2 and the first end 31 of the second connecting rod 3. The first rotating component 5 and the second rotating component 6 are arranged in parallel and both extend along the X-axis direction. The first rotating assembly 5 is connected between the synchronization gear assembly 4 and the first end 21 of the first connecting rod 2. The second rotating assembly 6 is connected between the synchronization gear assembly 4 and the first end 31 of the second connecting rod 3.

Specifically, referring to FIGS. 4 and 5, the synchronization gear assembly 4 includes a first rotating part 41 and a second rotating part 42 that are engaged with each other. The direction of the rotation axis of the first rotation portion 41 and the direction of the rotation axis of the second rotation portion 42 are parallel. In this embodiment, the first rotating portion 41 and the second rotating portion 42 both extend along the X-axis direction.

Specifically, referring to FIGS. 4 and 5, the first rotating assembly 5 includes a third rotating part 51 and a fourth rotating part 52 that are engaged with each other. Wherein, the direction of the rotation axis of the third rotation portion 51 intersects or is perpendicular to the direction of the rotation axis of the fourth rotation portion 52. In this embodiment, the rotation axis direction of the third rotation part 51 extends along the Y axis direction, and the rotation axis direction of the fourth rotation part 52 extends along the X axis direction.

Specifically, referring to FIGS. 4 and 5, the second rotating assembly 6 includes a fifth rotating part 61 and a sixth rotating part 62 engaged with each other. Wherein, the direction of the rotation axis of the fifth rotation portion 61 intersects or is perpendicular to the direction of the rotation axis of the sixth rotation portion 62. In this embodiment, the rotation axis direction of the fifth rotating portion 61 extends along the Y-axis direction, and the rotation axis direction of the sixth rotating portion 62 extends along the X-axis direction.

4 and 5, the third rotating part 51 is fixedly connected to the first end 21 of the first connecting rod 2, and its specific connection methods include but are not limited to screw connection, welding, gluing and so on. The fourth rotating part 52 is coaxially connected with the first rotating part 41.

4 and 5, the fifth rotating portion 61 is fixedly connected to the first end 31 of the second connecting rod 3, and specific connection methods include but are not limited to screw connection, welding, gluing, and so on. The sixth rotating part 62 is coaxially connected with the second rotating part 42.

The first connecting rod 2, the first rotating assembly 5, the synchronous gear assembly 4, the second rotating assembly 6, and the second connecting rod 3 in the embodiment of the present application realize the connection between the first housing 20 and the second housing 30 Synchronous reverse rotation, the specific linkage process is as follows: when the first housing 20 rotates around the Y-axis under manual or electric force, the first connecting rod 2 rotates with the first housing 20, and the first housing 20 rotates. A rotating assembly 5 drives the first rotating part 41 of the synchronous gear assembly 4 to rotate synchronously under the action of the first connecting rod 2, and the first rotating part 41 drives the second rotating part 42 to rotate synchronously and reversely , The second rotating part 42 drives the second rotating component 6 to rotate in reverse and synchronously with the first rotating component 5, and the second rotating component 6 drives the second connecting rod 3 relative to the first connecting rod 2 Synchronous reverse rotation, so that the second housing 30 and the first housing 20 rotate synchronously and in reverse. In this way, the foldable electronic device 100 can be folded or flattened. Of course, in this embodiment, the first housing 20 is taken as an example for description. In other embodiments, the second housing 30 may be rotated around the Y axis under manual or electric force to drive the first housing 20 to rotate synchronously. To rotate, I won’t repeat it here.

The first rotating assembly 5 provided in this embodiment synchronously converts the rotation of the first connecting rod 2 around the Y-axis direction into the rotation of the first rotating part 41 of the synchronous gear assembly 4 around the X-axis direction. The two rotating parts 42 are engaged so that the rotation in the X-axis direction is synchronously and reversely transmitted. The second rotating assembly 6 synchronously converts the rotation of the second rotating part 42 in the X-axis direction into a second connecting rod 3 around the Y-axis. In this way, the synchronous rotation mechanism 10 provided in this embodiment realizes the synchronous and reverse rotation of the first housing 20 and the second housing 30, and improves the accuracy and reliability of the rotation of the foldable electronic device 100.

Referring to FIGS. 4 and 5, the support 1 includes a bottom plate 11 and a first side plate 12, a second side plate 13, a third side plate 14 and a fourth side plate 15 surrounding the bottom plate 11. Specifically, the bottom plate 11 may be parallel or substantially parallel to the X-Y plane. The first side plate 12 and the second side plate 13 are arranged opposite to each other along the X-axis direction. Specifically, the first side plate 12 and the second side plate 13 may be parallel or substantially parallel to the Y-Z plane. The third side plate 14 and the fourth side plate 15 are both disposed between the first side plate 12 and the second side plate 13. The third side plate 14 and the fourth side plate 15 may be parallel or substantially parallel to the X-Z plane. The bottom plate 11, the first side plate 12, the second side plate 13, the third side plate 14, and the fourth side plate 15 surround and form an accommodating space 104. Among them, the four side plates of the first side plate 12, the second side plate 13, the third side plate 14 and the fourth side plate 15 may be connected or disconnected in pairs. It is understandable that the bracket 1 is used as a structure for carrying the first rotating component 5 and the second rotating component 6, and the material of the bracket 1 can be metal, hard plastic or other composite materials with certain rigidity.

The first end 21 of the first connecting rod 2 is located in the accommodating space 104 and is rotatably connected to the third side plate 14. In other words, the rotation axis of the first end 21 of the first link 2 is perpendicular to the third side plate 14.

The structure of the first type of first rotating assembly 5 provided by the embodiment of the present application will be described below with reference to the accompanying drawings.

Please refer to FIG. 6. In this embodiment, the third rotating portion 51 is a first worm gear. The third rotating portion 51 is located on a side of the first end 21 of the first connecting rod 2 away from the third side plate 14 and is coaxially connected with the first end 21 of the first connecting rod 2. The third rotating portion 51 and the first end 21 of the first connecting rod 2 are both rotatably connected to the third side plate 14. The axial direction of the third rotating part 51 is the Y-axis direction.

Please refer to FIG. 7. In this embodiment, the fourth rotating part 52 is a first worm. The opposite ends of the fourth rotating portion 52 are respectively rotatably connected between the first side plate 12 and the second side plate 13. The axial direction of the fourth rotating part 52 is along the X-axis direction. In this embodiment, the axial direction of the fourth rotating part 52 is perpendicular to the axial direction of the third rotating part 51. The third rotating portion 51 is located on a side of the fourth rotating portion 52 away from the bottom plate 11.

Please refer to FIG. 6, the third rotating portion 51 includes a first side surface 511 and a second side surface 512 disposed opposite to each other, and a peripheral side surface 513 connected between the first side surface 511 and the second side surface 512. The first side surface 511 and the second side surface 512 may be parallel or substantially parallel to the X-Z plane. The peripheral side surface 513 of the third rotating part 51 is provided with teeth meshing with the fourth rotating part 52.

Please refer to FIG. 6, the first side surface 511 is the surface of the third rotating portion 51 facing the third side plate 14. One end of the first connecting rod 2 is fixedly connected to the first side surface 511. The peripheral side surface 513 includes an arc-shaped peripheral surface 514 and a flat peripheral surface 515. Continuous teeth 516 are provided on the arc-shaped peripheral surface 514. Since the first housing 20 and the second housing 30 are rotated from the flat state to the folded state, the angle of rotation of the first housing 20 is between 80 and 100°. In other words, the rotation distance of the third rotation portion 51 is less than one revolution. In this way, continuous teeth 516 are provided in the area of the peripheral side surface 513 that needs to be meshed with the fourth rotating portion 52, and the area on the peripheral side surface 513 that does not need to be meshed with the fourth rotating portion 52 can form a flat surface. 515. On the one hand, the thickness dimension of the first rotating assembly 5 can be reduced; on the other hand, the surface 24 of the first connecting rod 2 is flush with the planar peripheral surface 515, and the first connecting rod 2 is flush with The flush surface 24 of the planar peripheral surface 515 supports the flexible display screen 102 when the first link 2 and the second link 3 are in a flat state. In other words, the planar peripheral surface 515 of the third rotating portion 51 also functions to support the flexible display screen 102 when the first link 2 and the second link 3 are in a flat state.

In this embodiment, the continuous teeth 516 on the arc-shaped peripheral surface 514 are all arranged along the axial direction of the third rotating part 51 so that the axial direction of the third rotating part 51 is perpendicular to the axial direction of the fourth rotating part 52.

In other embodiments, the extending direction of the continuous teeth 516 on the arc-shaped peripheral surface 514 may be inclined with respect to the axial direction of the third rotating part 51, so that the axial direction of the third rotating part 51 is aligned with the axial direction of the fourth rotating part 52. To intersect.

The present application does not specifically limit the length occupied by the arc-shaped peripheral surface 514, as long as it meets the requirement that the first housing 20 is engaged with the fourth rotating part 52 during the rotation of the first housing 20.

Please refer to FIG. 6, the arc-shaped peripheral surface 514 is a concave arc surface. The continuous tooth 516 includes a plurality of teeth. The end surface of the tooth away from the arc-shaped peripheral surface 514 is a concave arc surface.

Since the fourth rotating part 52 is a cylindrical rod, the outer peripheral surface of the fourth rotating part 52 is an outer convex arc surface, and the end surface of the tooth away from the arc-shaped peripheral surface 514 is an inner concave arc surface, so as to be consistent with the fourth rotating part. The convex arc surfaces on 52 cooperate to increase the depth of engagement between the third rotating part 51 and the fourth rotating part 52, thereby increasing the transmission efficiency of the fourth rotating part 52 and the third rotating part 51.

6 and 7, the spiral teeth on the fourth rotating part 52 are in a convex arc shape, and the arc-shaped peripheral surface 514 is an inwardly concave arc surface so as to be in a convex arc shape with the fourth rotating part 52. The helical teeth cooperate to increase the meshing depth of the third rotating part 51 and the fourth rotating part 52, thereby increasing the transmission efficiency of the fourth rotating part 52 and the third rotating part 51.

The first rotating part 41 of the synchronous gear assembly 4 and the fourth rotating part 52 are coaxially connected.

Specifically, referring to FIG. 7, the fourth rotating portion 52 includes a meshing section 521 and a connecting section 522 that are interconnected as a whole. Helical teeth are provided on the outer peripheral surface of the meshing section 521. The meshing section 521 meshes and connects the continuous teeth 516 on the arc-shaped peripheral surface 514 of the third rotating portion 51. In this application, the first rotating portion 41 is sleeved on the connecting section 522 and is fixedly connected to the connecting section 522. The fixing methods include, but are not limited to, threaded connection, snap-fit connection, welding, integral molding or bonding.

Referring to FIG. 7, the engaging section 521 is close to the first side plate 12. The present application does not specifically limit the length of the engaging section 521, as long as it can be engaged with the engaging section 521 during the rotation of the third rotating part 51. .

The position of the first rotating part 41 on the connecting section 522 is close to the engaging section 521, but it does not affect the third rotating part 51.

4 and 5, in this embodiment, the fifth rotating portion 61 is a second worm gear. The axial direction of the fifth rotating part 61 is parallel to the axial direction of the third rotating part 51. The fifth rotating portion 61 is located on a side of the first end 31 of the second link 3 away from the fourth side plate 15 and is coaxially connected with the first end 31 of the second link 3. The fifth rotating portion 61 and the first end 31 of the second connecting rod 3 are both rotatably connected to the fourth side plate 15. The axial direction of the fifth rotating portion 61 is the Y-axis direction.

4 and 5, in this embodiment, the sixth rotating portion 62 is a second worm. The axial direction of the sixth rotating portion 62 is parallel to the axial direction of the fourth rotating portion 52. The opposite ends of the sixth rotating portion 62 rotate between the first side plate 12 and the second side plate 13 respectively. The axial direction of the sixth rotating portion 62 is along the X-axis direction. In this embodiment, the axial direction of the sixth rotating part 62 is perpendicular to the axial direction of the fifth rotating part 61. The fifth rotating portion 61 is located on a side of the sixth rotating portion 62 away from the bottom plate 11.

In this embodiment, the structure of the sixth rotating part 62 is the same as that of the fourth rotating part 52, but the arrangement direction of the sixth rotating part 62 is opposite to the arrangement direction of the fourth rotating part 52, and the engagement on the sixth rotating part 62 The section 521 is close to the second side plate 13. The engaging section 521 on the sixth rotating portion 62 corresponds to the connecting section 522 of the fourth rotating portion 52 between the second side plate 13 and the first rotating portion 41. The second rotating portion 42 is sleeved on the sixth rotating portion 62 and is coaxially and fixedly connected with the sixth rotating portion 62.

In this embodiment, the structure of the fifth rotating part 61 is the same as the structure of the third rotating part 51.

Specifically, in this embodiment, the first rotating part 41 is a first gear, and the second rotating part 42 is a second gear. The first rotating part 41 and the second rotating part 42 are arranged along the Y-axis direction. The meshing section 521 of the fourth rotating portion 52 and the meshing section 521 of the sixth rotating portion 62 are respectively provided on opposite sides of the first rotating portion 41 and the second rotating portion 42. In other words, the first rotating component 5 and the second rotating component 6 have the same structure and are arranged in mirror and diagonal symmetry, so that the structural layout of the synchronous rotating mechanism 10 is more compact and reasonable.

Referring to FIG. 8, when the first housing 20 and the second housing 30 are in a flattened state, the first connecting rod 2 and the second connecting rod 3 are in a flattened state, and the third rotating part 51 engages the fourth rotating part 52 , The fifth rotating part 61 engages the sixth rotating part 62. Referring to FIG. 9, when the first housing 20 rotates in the clockwise direction, the first link 2 drives the third rotating part 51 to rotate in the clockwise direction, and the fourth rotating part 52 rotates around under the action of the third rotating part 51. The X axis rotates, the fourth rotating part 52 drives the first rotating part 41 to rotate around the X axis, and the second rotating part 42 drives the sixth rotating part 62 to rotate synchronously and reversely around the X axis under the action of the first rotating part 41. The rotating part 62 drives the fifth rotating part 61 to rotate in a counterclockwise direction, thereby driving the second housing 30 and the first housing 20 to rotate in reverse and synchronously, so that the first housing 20 and the second housing 30 are folded, and the first housing The schematic diagram of the folding of the body 20 and the second housing 30 is shown in FIG. 10.

In the synchronous rotation mechanism 10 formed by the meshing of four gears, high gear manufacturing precision and high assembly precision are required to realize synchronous movement, which increases the manufacturing difficulty and cost. The assembly accuracy is mainly reflected in the center distance of the gear pair. When the center distance tolerance is too large, there will be gaps between the gears, and the transmission will have lost motion. When the gear pairs are more, the cumulative amount of lost motion will be more, resulting in failure to synchronize sports. Therefore, the synchronous rotating mechanism 10 with multiple gear pairs, in order to realize the synchronous mechanism, requires extremely high gear manufacturing precision and assembly precision, which will increase the overall cost of the synchronous mechanism.

Compared with a synchronization mechanism formed by meshing four gears, the synchronous rotation mechanism 10 provided in the present application only uses one gear pair (two gears) to achieve synchronous rotation, which reduces the number of gears with high manufacturing precision. The cost is saved. In addition, the number of gears is small, which is easy to assemble, and the accumulated tolerance of the gears is small, thereby reducing the phenomenon of idle motion.

The structure of the second first rotating assembly 5 provided by the embodiment of the present application will be described below in conjunction with the accompanying drawings.

Please refer to FIG. 11, the main difference between this embodiment and the first type of first rotating assembly 5 is that the third rotating portion 53 is a first bevel gear. The fourth rotating part 54 is a second bevel gear. The third rotating part 53 is engaged with the fourth rotating part 54 to convert rotation around the Y-axis direction into rotation around the X-axis direction. The third rotating portion 53 is coaxially connected with the first connecting rod 2. The axial direction of the third rotating portion 53 intersects or is perpendicular to the axial direction of the fourth rotating portion 54. The first rotating part 41 of the synchronous gear assembly 4 and the fourth rotating part 54 are coaxially connected.

Specifically, referring to FIG. 11, the first rotating assembly 5 further includes a first rotating rod 55 extending along the X-axis direction. The opposite ends of the first rotating rod 55 are rotatably connected between the first side plate 12 and the second side plate 13 respectively. The fourth rotating part 54 is sleeved on the first rotating rod 55 and fixed to the first rotating rod 55. The first rotating part 41 is sleeved on the first rotating rod 55 and fixed to the first rotating rod 55. Wherein, the first rotating portion 41 is provided between the fourth rotating portion 54 and the second side plate 13.

The third rotating part 53 may be located between the fourth rotating part 54 and the third side plate 14. The rotation axis of the third rotation part 53 is along the Y-axis direction. The third rotating part 53 is provided with a half-circle or more than half-circle conical teeth in the circumferential direction. The third rotating part 53 is also connected to the first connecting rod 2 in the circumferential direction. When the first connecting rod 2 rotates, the third rotating part 53 is driven to rotate , The third rotating part 53 drives the fourth rotating part 54 and the first rotating rod 55 to rotate. The first rotating part 41 rotates in accordance with the rotation of the first rotating lever 55.

In this embodiment, the structure of the second rotating assembly 6 may be the same as the structure of the first rotating assembly 5 and arranged diagonally symmetrically, and the synchronous gear assembly 4 is the same as the previous embodiment, and will not be repeated here.

Compared with the combination of a worm wheel and a worm, the length of the fourth rotating part 54 on the first rotating rod 55 provided by this embodiment is shorter than the spiral pattern, which can effectively reduce the first side plate 12 and the second side. The distance between the plates 13 further reduces the length of the synchronous rotation mechanism 10 along the X-axis direction.

The structure of the third type of the first rotating assembly 5 provided by the embodiment of the present application will be described below with reference to the accompanying drawings.

The main difference between this embodiment and the first rotating assembly 5 of the first type is that, referring to FIG. 12, the third rotating part 56 is a spur gear. The fourth rotating part 57 is a side gear. The third rotating part 56 is coaxially connected with the first connecting rod 2. The axial direction of the third rotating part 56 intersects or is perpendicular to the axial direction of the fourth rotating part 57. The first rotating part 41 of the synchronous gear assembly 4 is coaxially connected with the fourth rotating part 57.

Specifically, referring to FIG. 12, the first rotating assembly 5 further includes a second rotating rod 58 extending along the X-axis direction. The opposite ends of the second rotating rod 58 are respectively connected to the first side plate 12 and the second side plate 13 in rotation. The fourth rotating part 57 is sleeved on the second rotating rod 58 and fixed to the second rotating rod 58. The first rotating part 41 is sleeved on the second rotating rod 58 and fixed to the second rotating rod 58. Wherein, the first rotating portion 41 is provided between the fourth rotating portion 57 and the second side plate 13.

The teeth on the fourth rotating portion 57 are arranged toward the first side plate 12 or the second side plate 13. In this embodiment, the teeth of the fourth rotating portion 57 are directed toward the second side plate 13 as an example for description. The third rotating part 56 is located between the fourth rotating part 57 and the first rotating part 41. The rotation axis of the third rotation part 56 is along the Y-axis direction. The third rotating part 56 is provided with teeth on half or most of the circumference in the circumferential direction. The third rotating part 56 is also connected to the first connecting rod 2 in the circumferential direction. When the first connecting rod 2 rotates, the third rotating part 56 is driven to rotate. The rotating part 56 drives the fourth rotating part 57 and the second rotating rod 58 to rotate. The first rotating part 41 rotates in accordance with the rotation of the second rotating lever 58.

Compared with the combination of a worm wheel and a worm, the length of the fourth rotating part 57 on the second rotating rod 58 provided by this embodiment is shorter than the spiral pattern, which can effectively reduce the first side plate 12 and the second side. The distance between the plates 13 further reduces the length of the synchronous rotation mechanism 10 along the X-axis direction.

It is understandable that the present application provides three specific structures of the first rotating assembly 5. Of course, those skilled in the art can make appropriate changes and polishes according to the specific structure of the first rotating assembly 5 provided in the present application, all of which belong to the present application The protection range of the first rotating assembly 5 in. The structure of the first rotating component 5 and the second rotating component 6 in the synchronous rotating mechanism 10 provided in the present application may be the same or different. In other words, the second rotating component 6 may be a combination of a worm wheel and a worm, or two bevel gears. It can also be a combination of side gears and spur gears.

The above are part of the implementation of this application. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of this application, several improvements and modifications can be made, and these improvements and modifications are also considered. The scope of protection of this application.

Claims

A synchronous rotation mechanism, characterized in that it comprises:

The first connecting rod and the second connecting rod arranged oppositely;

The synchronous gear assembly includes a first rotating part and a second rotating part that are meshed with each other;

The first rotating component includes a third rotating part and a fourth rotating part engaged with each other, the third rotating part is connected with the first connecting rod, and the fourth rotating part is coaxially connected with the first rotating part ;and

The second rotating component includes a fifth rotating part and a sixth rotating part engaged with each other, the fifth rotating part is connected with the second connecting rod, and the sixth rotating part is coaxially connected with the second rotating part ；

When the first connecting rod rotates, the first rotating assembly drives the synchronization gear assembly to rotate under the action of the first connecting rod to drive the second rotating assembly to rotate, so that the second connecting rod The rod rotates synchronously and reversely relative to the first connecting rod.
The synchronous rotation mechanism according to claim 1, wherein the third rotation part is coaxially connected with the first connecting rod, and the first rotation part is coaxially connected with the fourth rotation part.
The synchronous rotation mechanism according to claim 1, wherein the direction of the rotation axis of the third rotation part intersects or is perpendicular to the direction of the rotation axis of the fourth rotation part.
The synchronous rotation mechanism according to claim 1, wherein the direction of the rotation axis of the fifth rotation part intersects or is perpendicular to the direction of the rotation axis of the sixth rotation part.
The synchronous rotation mechanism according to claim 1, wherein the third rotation part is a first worm gear, and the fourth rotation part is a first worm.
The synchronous rotating mechanism according to claim 1, wherein the third rotating part includes a first side surface and a second side surface disposed opposite to each other, and is connected between the first side surface and the second side surface One end of the first connecting rod is fixedly connected to the first side surface, the peripheral side surface includes an arc-shaped peripheral surface, the arc-shaped peripheral surface is provided with continuous teeth, and the continuous teeth are connected to the The fourth rotating part is engaged and connected.
The synchronous rotation mechanism according to claim 6, wherein the arc-shaped peripheral surface is a concave arc surface, the continuous tooth includes a plurality of teeth, and the end surface of the tooth away from the arc-shaped peripheral surface is an inner surface. Concave arc surface.
7. The synchronous rotation mechanism of claim 6, wherein the continuous teeth on the arc-shaped peripheral surface are all arranged along the axial direction of the third rotation part.
7. The synchronous rotation mechanism of claim 6, wherein the extending direction of the continuous teeth on the arc-shaped peripheral surface is inclined with respect to the axial direction of the third rotation portion.
7. The synchronous rotation mechanism of claim 6, wherein the peripheral side surface further comprises a planar peripheral surface, and the planar peripheral surface is flush with the surface of the first connecting rod.
The synchronous rotating mechanism according to claim 5, wherein the fourth rotating part includes a meshing section and a connecting section that are interconnected as a whole, and the outer peripheral surface of the meshing section is provided with helical teeth, and the meshing section The third rotating part is engaged and connected, and the first rotating part is sleeved on the connecting section and fixedly connected with the connecting section.
The synchronous rotation mechanism according to claim 11, wherein the helical teeth are in a convex arc shape.
The synchronous rotation mechanism according to claim 5, wherein the synchronous rotation mechanism further comprises a bracket, the bracket has an accommodating space, and the first end of the first link and the second link The first end is located in the accommodating space of the bracket, and the second end of the first connecting rod and the second end of the second connecting rod are respectively used for fixedly connecting the first housing and the second housing.
The synchronous rotation mechanism of claim 13, wherein the bracket includes a bottom plate and a first side plate, a second side plate, and a third side plate connected to the bottom plate, the first side plate and the The second side plate is arranged oppositely, the third side plate is arranged between the first side plate and the second side plate, the opposite ends of the fourth rotating part are respectively connected to the first side in rotation Between the plate and the second side plate, the third rotating part and one end of the first connecting rod are both rotatably connected to the third side plate, and the third rotating part is located away from the fourth rotating part One side of the bottom plate.
The synchronous rotating mechanism of claim 5, wherein the fifth rotating part is a second worm gear, the sixth rotating part is a second worm, and the fifth rotating part is connected to the second connecting rod. Are coaxially connected, the axial direction of the fifth rotating part is parallel to the axial direction of the third rotating part, the axial direction of the sixth rotating part is parallel to the axial direction of the fourth rotating part, and the second The rotating part is coaxially connected with the sixth rotating part.
The synchronous rotating mechanism according to any one of claims 1 to 15, wherein the first rotating part is a first gear, the second rotating part is a second gear, and the rotating shaft of the first rotating part The direction is parallel to the direction of the rotation axis of the second rotation part.
The synchronous rotating mechanism according to claim 2, wherein the third rotating part is a first bevel gear, and the fourth rotating part is a second bevel gear.
The synchronous rotation mechanism according to claim 2, wherein the third rotation part is a spur gear, and the fourth rotation part is a side gear.
A foldable housing assembly, comprising a first housing, a second housing, and the synchronous rotation mechanism according to any one of claims 1-18, and the first housing is connected to the first housing. An end of a connecting rod away from the first rotating assembly, the second housing is connected to an end of the second connecting rod away from the second rotating assembly, when the first housing rotates, the first housing A connecting rod drives the first rotating assembly, the synchronization gear assembly, the second rotating assembly, and the second connecting rod to rotate under the action of the first housing, so that the second housing is relatively Synchronously reverse rotation of the first housing.
A foldable electronic device, comprising a display screen and the foldable housing assembly according to claim 19, and the display screen is provided in the first housing, the second housing and the On the synchronous rotation mechanism, the display screen can be unfolded as the first housing and the second housing are unfolded, and folded as the first housing and the second housing are closed .