CN218564166U - Rotating mechanism and foldable electronic equipment - Google Patents

Rotating mechanism and foldable electronic equipment Download PDF

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Publication number
CN218564166U
CN218564166U CN202222348608.6U CN202222348608U CN218564166U CN 218564166 U CN218564166 U CN 218564166U CN 202222348608 U CN202222348608 U CN 202222348608U CN 218564166 U CN218564166 U CN 218564166U
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China
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gear
swing arm
teeth
rotating
synchronous
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CN202222348608.6U
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Chinese (zh)
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黄健
陈瑞豪
苏帅
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Honor Device Co Ltd
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Honor Device Co Ltd
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Abstract

The application provides a rotating mechanism and a foldable electronic device. The rotating mechanism comprises a fixed base, a first synchronous swing arm, a second synchronous swing arm and a synchronizing piece. The first gear and the second gear of the synchronizing part are arranged in parallel at intervals, the third gear and the fourth gear of the synchronizing part are fixedly connected and axially parallel and are both positioned between the first gear and the second gear, and the axial direction of the third gear is vertical to the axial direction of the first gear. The first gear is meshed with the third gear, one of the first gear and the third gear is a straight gear, and the other gear is a face gear. The second gear is meshed with the fourth gear, one of the second gear and the fourth gear is a straight gear, and the other gear is a face gear. The first synchronous swing arm is fixedly connected with the first gear, and the second synchronous swing arm is fixedly connected with the second gear. The application provides a slewing mechanism can solve the poor technical problem of current slewing mechanism's rotation stationarity.

Description

Rotating mechanism and foldable electronic equipment
Technical Field
The application relates to the technical field of electronic products, in particular to a rotating mechanism and a foldable electronic device.
Background
With the development of technology, the appearance (ID) of electronic devices (such as mobile phones and tablet computers) tends to be developed from a bar-type machine to a folder. The folder has a large-area screen in an opening state, fully meets the visual experience of consumers, and is small in size and convenient to carry in a closing state. In the prior art, most of folding machines realize synchronous movement through synchronous gears in a synchronous mechanism. However, the conventional synchronous gear has poor rotational smoothness.
SUMMERY OF THE UTILITY MODEL
The application provides a slewing mechanism and collapsible electronic equipment to solve the poor technical problem of slewing mechanism's among the prior art rotation stationarity.
In a first aspect, the present application provides a turning gear comprising: fixed base, first synchronous swing arm, the synchronous swing arm of second and synchronous piece. The synchronous piece comprises a first gear, a second gear, a third gear and a fourth gear, the first gear and the second gear are parallel and arranged at intervals, and the third gear is fixedly connected with the fourth gear and axially parallel. The third gear and the fourth gear are both positioned between the first gear and the second gear, and the axial direction of the third gear is vertical to the axial direction of the first gear. The first gear is meshed with the third gear, one of the first gear and the third gear is a straight gear, and the other gear is a face gear. The second gear is meshed with the fourth gear, one of the second gear and the fourth gear is a straight gear, and the other gear is a face gear. The first synchronous swing arm is fixedly connected with the first gear, and the second synchronous swing arm is fixedly connected with the second gear. The synchronous piece is installed in the fixed base and is rotationally connected with the fixed base. The first synchronous swing arm and the second synchronous swing arm are respectively positioned on two opposite sides of the fixed base in the width direction, the rotating directions of the first synchronous swing arm and the second synchronous swing arm are opposite, and the rotating directions of the first gear and the second gear are opposite.
The rotating mechanism is applied to foldable electronic equipment, and the foldable electronic equipment comprises a first shell, a second shell and a display screen. The first shell is connected with the first synchronous swing arm, and the second shell is connected with the second synchronous swing arm. The rotating mechanism is positioned between the first shell and the second shell and enables the first shell and the second shell to be connected in a rotating mode. The rotation of the rotating mechanism can drive the first shell and the second shell to rotate relatively. The first shell and the second shell are also provided with accommodating grooves which are used for accommodating electronic elements and structural elements such as a processor, a circuit board, a camera module and the like of the electronic equipment.
When the rotating mechanism is in a folded state, the first synchronous swing arm and the second synchronous swing arm are folded relatively. That is, the first and second synchronizing swing arms rotate toward the direction of mutual approach to make the first and second synchronizing swing arms be stacked. When the rotating mechanism is in a flattening state, the first synchronous swing arm and the second synchronous swing arm are flattened relative to the fixed base.
In the embodiment, one of the first gear and the third gear which are meshed with each other is set as a straight gear, the other is set as a face gear, and the axial directions of the first gear and the third gear are vertical, so that when the first gear drives the third gear to rotate, the acting forces applied to the first gear and the third gear are both parallel to the tangential direction; through establishing into spur gear with intermeshing's second gear and fourth gear one, one is established to the face gear, and the axial of second gear and fourth gear is perpendicular for when fourth gear drives the second gear rotation, the effort that fourth gear and fourth gear received all is parallel with the tangential. That is, first gear, second gear, third gear and fourth gear all do not receive axial effort to can reduce or even eliminate the axial error of first gear, second gear, third gear and fourth gear, promote the transmission performance of synchronizing, promote slewing mechanism's rotational stability and reliability, simplify the connection structure between synchronizing and the fixed baseplate simultaneously, alleviate slewing mechanism's weight, realize the frivolousization of collapsible electronic equipment. Meanwhile, when the synchronous part is designed, the tooth surface contact condition does not need to be checked, the design process can be simplified, and the labor force is saved.
And, establish one in first gear and the third gear into face gear, can promote the contact ratio of first gear and third gear, establish one in second gear and the fourth gear into face gear, can promote the contact ratio of second gear and fourth gear to can improve the bearing capacity of gear, promote the driven stationarity of synchronizing member, and then promote slewing mechanism and foldable electronic equipment pivoted stability. In addition, the straight gear and the face gear adopted in the embodiment can adopt standard gears, and the gear has the advantages of simple structure, low maintenance cost and higher interchangeability.
In one possible embodiment, the rotating mechanism has a folded state and a flattened state. Wherein, slewing mechanism is in during the exhibition paper-back edition state, first synchronous swing arm with the synchronous swing arm of second expandes relatively, works as first synchronous swing arm orientation is close to when the unable adjustment base direction rotates, first synchronous swing arm drives first gear revolve, first gear drives third gear revolve, thereby the third gear drives fourth gear revolve, the fourth gear drives second gear revolve, the second gear and then drive the synchronous swing arm orientation of second is close to first synchronous swing arm direction rotates, so that slewing mechanism is in fold condition.
In this embodiment, first synchronous swing arm and the synchronous swing arm of second realize synchronous rotation through the synchronizing part to realize slewing mechanism's synchronous rotation, and then promote slewing mechanism pivoted convenience and reliability, promote user's use and experience.
In a possible embodiment, the first gear is a spur gear and the third gear is a face gear; the first gear comprises a plurality of first teeth and a first outer peripheral surface, and the first teeth are arranged on the first outer peripheral surface at intervals; the third gear comprises a plurality of third teeth, the third gear further comprises a third end surface, the third teeth are arranged on the third end surface at intervals, and the orientation of the third teeth is opposite to that of the first teeth.
The first outer peripheral surface is an outer surface surrounding the first gear in the axial direction, and the third end surface is an end surface in the axial direction of the third gear. In this embodiment, the first gear is a spur gear, the third gear is a face gear, and an axial direction of the third gear is perpendicular to an axial direction of the first gear, and when the first gear drives the third gear to rotate, an acting force of the first tooth on the third tooth is along a tangential direction of the third gear, and an acting force of the third tooth on the first tooth is along a tangential direction of the first gear. That is, first gear and third gear do not all receive axial effort to can reduce or even eliminate the axial error of first gear and third gear, promote the transmission performance of synchronizing member, promote slewing mechanism's rotational stability and reliability.
In one possible embodiment, the second gear is a spur gear and the fourth gear is a face gear; the second gear comprises a plurality of second teeth, the second gear further comprises a second outer circumferential surface, and the plurality of second teeth are arranged on the second outer circumferential surface at intervals; the fourth gear comprises a plurality of fourth teeth, the fourth gear further comprises a fourth end surface, the fourth teeth are arranged on the fourth end surface at intervals, and the orientation of the fourth teeth is opposite to that of the second teeth.
The second outer circumferential surface is an outer surface around the second gear in the axial direction, and the fourth end surface is an end surface of the fourth gear in the axial direction. In this embodiment, the second gear is a spur gear, the fourth gear is a face gear, and the axial direction of the second gear is perpendicular to the axial direction of the fourth gear, and when the fourth gear drives the second gear to rotate, the tangential direction of the second gear is followed by the acting force of the fourth gear to the second teeth, and the tangential direction of the fourth gear is followed by the acting force of the second teeth to the fourth teeth. That is, the second gear and the fourth gear are not subjected to axial acting force, so that the axial errors of the second gear and the fourth gear can be reduced or even eliminated, the transmission performance of the synchronizing part is further improved, and the rotation stability and the reliability of the rotating mechanism are improved.
In a possible embodiment, said first and third teeth are straight teeth, or helical teeth, or arc-shaped teeth. And the second teeth and the fourth teeth are straight teeth, or helical teeth, or arc-shaped teeth.
In this embodiment, the shapes of the first tooth, the second tooth, the third tooth and the fourth tooth may be adjusted according to an actual application scenario and a use situation, that is, the types of the first gear, the second gear, the third gear and the fourth gear may be adjusted according to an actual situation. That is, the shapes of the spur gear and the face gear may be adjusted according to actual conditions as long as two gears that are engaged with each other. The slewing mechanism that this embodiment provided has higher flexibility, plays the effect of saving cost.
In a possible embodiment, the first gear is a face gear and the third gear is a spur gear; the first gear comprises a plurality of first teeth, the first gear further comprises a first end surface, and the first teeth are arranged on the first end surface at intervals; the third gear comprises a plurality of third teeth, the third gear further comprises a third outer peripheral surface, the third teeth are arranged on the third outer peripheral surface at intervals, and the orientation of the third teeth is opposite to that of the first teeth.
The first end surface is an axial end surface of the first gear, and the first end surface is perpendicularly connected to the first outer peripheral surface. The third outer peripheral surface is an outer surface surrounding the axial direction of the third gear, and the third outer peripheral surface is vertically connected with the third end surface. In this embodiment, the first gear is a face gear, the third gear is a spur gear, and an axial direction of the third gear is perpendicular to an axial direction of the first gear, and when the first gear drives the third gear to rotate, a tangential direction of the third gear is followed by an acting force of the first tooth on the third tooth, and a tangential direction of the first gear is followed by an acting force of the third tooth on the first tooth. That is, first gear and third gear do not all receive axial effort to can reduce or even eliminate the axial error of first gear and third gear, promote the transmission performance of synchronizing member, promote slewing mechanism's rotational stability and reliability. Moreover, the types of the first gear and the third gear can be selected according to actual use conditions, as long as one of the first gear and the third gear is a face gear, and the other gear is a straight gear, so that the applicability of the synchronous piece is improved.
In a possible embodiment, the second gear is a face gear and the fourth gear is a spur gear; the second gear comprises a plurality of second teeth, the second gear further comprises a second end face, and the second teeth are arranged on the second end face at intervals; the fourth gear comprises a plurality of fourth teeth, the fourth gear further comprises a fourth outer circumferential surface, the fourth teeth are arranged on the fourth outer circumferential surface at intervals, and the orientation of the fourth teeth is opposite to that of the second teeth.
The second end face is an axial end face of the second gear, and the second end face is perpendicularly connected with the second outer circumferential surface. The fourth outer circumferential surface is an outer surface surrounding the fourth gear in the axial direction, and the fourth outer circumferential surface is perpendicularly connected with the fourth end surface. In this embodiment, the second gear is a face gear, the fourth gear is a spur gear, and the axial direction of the second gear is perpendicular to the axial direction of the fourth gear, and when the fourth gear drives the second gear to rotate, the tangential direction of the second gear is followed by the acting force of the fourth gear to the second teeth, and the tangential direction of the fourth gear is followed by the acting force of the second teeth to the fourth teeth. That is, the second gear and the fourth gear are not subjected to axial acting force, so that the axial errors of the second gear and the fourth gear can be reduced or even eliminated, the transmission performance of the synchronous part is improved, and the rotation stability and the reliability of the rotating mechanism are improved. And the types of the second gear and the fourth gear can be selected according to actual use conditions, as long as one of the second gear and the fourth gear is a face gear, and the other gear is a straight gear, so that the applicability of the synchronous piece is improved.
In a possible embodiment, the synchronizing member further comprises a first rotating shaft, a second rotating shaft and a third rotating shaft. The first rotating shaft, the second rotating shaft and the third rotating shaft are all connected with the fixed base in a rotating mode. And the axial directions of the first rotating shaft and the second rotating shaft are parallel to the length direction of the fixed base, and the axial direction of the third rotating shaft is parallel to the width direction of the fixed base. The first gear is coaxially and fixedly connected with the first rotating shaft, the second gear is coaxially and fixedly connected with the second rotating shaft, and the third gear and the fourth gear are coaxially fixed at two opposite ends of the third rotating shaft respectively.
In this embodiment, through setting up first axis of rotation and second axis of rotation to drive first gear through first axis of rotation, the second axis of rotation drives second gear and rotates, thereby can promote first gear and second gear pivoted stability. And, through setting up the third axis of rotation to third gear and fourth gear all with the coaxial fixed connection of third axis of rotation, thereby can realize the coaxial rotation of third gear and fourth gear, and promote third gear and fourth gear pivoted stability.
In a possible embodiment, the first synchronizing swing arm is fixedly connected to the first rotating shaft, and the second synchronizing swing arm is fixedly connected to the second rotating shaft.
In this embodiment, when first synchronous swing arm rotated, drive first axis of rotation and rotate, then drive first gear and rotate, rethread third gear and fourth gear drive second gear and rotate, and the second gear drives the second axis of rotation again and rotates to drive the synchronous swing arm rotation of second, realize the synchronous rotation of first synchronous swing arm and the synchronous swing arm of second. In this embodiment, can promote first synchronous swing arm pivoted stability through setting up first axis of rotation, can promote second synchronous swing arm pivoted stability through setting up the second axis of rotation.
In a possible implementation manner, the rotating mechanism includes a first fixing frame and a second fixing frame, the first fixing frame and the second fixing frame are respectively located at two opposite sides of the fixed base in the width direction, the first synchronous swing arm is slidably connected to the first fixing frame, and the second fixing frame is slidably connected to the second synchronous swing arm.
The first shell is fixedly connected with the first fixing frame, and the second shell is fixedly connected with the second fixing frame. In this embodiment, through setting up first mount and second mount for when first casing and second casing rotate relatively, drive first synchronous swing arm through first mount and rotate, the synchronous swing arm of second is driven to the second mount and is rotated, thereby can promote first synchronous swing arm and the synchronous swing arm pivoted stability of second, and then can promote slewing mechanism and collapsible electronic equipment pivoted stability.
In a possible embodiment, the fixed base is provided with a first rotating groove and a second rotating groove, and the first rotating groove and the second rotating groove are oppositely arranged; the rotating mechanism comprises a first main swing arm and a second main swing arm, the first main swing arm is mounted in the first rotating groove and can slide and rotate along the first rotating groove, and the first main swing arm is rotatably connected with the first fixing frame; the second main swing arm is arranged in the second rotating groove, can slide and rotate along the second rotating groove, and is rotatably connected with the second fixing frame.
In this embodiment, through setting up first main swing arm and second main swing arm to, when first mount relatively fixed base rotated, first main swing arm rotated and slided in first rotation inslot, when second mount relatively fixed base rotated, second main swing arm rotated and slided in second rotation inslot, thereby can realize that first mount and second mount relatively fixed base rotate.
In a second aspect, the present application provides a foldable electronic device, comprising a first housing, a second housing, a display screen, and the above-mentioned rotating mechanism. The rotating mechanism is connected between the first shell and the second shell, and the display screen is installed on the first shell, the second shell and the rotating mechanism. When the rotating mechanism rotates, the first shell and the second shell rotate relatively, so that the display screen is driven to be bent or unfolded.
In this embodiment, the rotation mechanism is disposed on the foldable electronic device, so that the rotation stability of the foldable electronic device can be improved.
In summary, in the present application, one of the first gear and the third gear which are meshed with each other is a spur gear, and the other is a face gear, and the axial directions of the first gear and the third gear are perpendicular; establish to the spur gear through second gear with intermeshing and fourth gear one, establish to face gear one, and the axial direction of second gear and fourth gear is perpendicular, make first gear, the second gear, third gear and fourth gear all do not receive axial force when rotating, thereby can reduce or even eliminate first gear, the second gear, the axial error of third gear and fourth gear, promote the transmission performance of synchronizing member, promote slewing mechanism's rotational stability and reliability, simplify the connection structure between synchronizing member and the fixed baseplate simultaneously, alleviate slewing mechanism's weight, realize collapsible electronic equipment's frivolousization.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present application, the drawings required to be used in the embodiments or the background art of the present application will be described below.
Fig. 1 is a schematic structural diagram of a foldable electronic device provided in an embodiment of the present application in a first state;
fig. 2 is a schematic structural diagram of a foldable electronic device provided in an embodiment of the present application in a second state;
fig. 3 is a schematic structural diagram of a foldable electronic device provided in an embodiment of the present application in a third state;
FIG. 4 is an exploded view of the foldable electronic device shown in FIG. 3;
FIG. 5 is a schematic structural diagram of a rotation mechanism in the foldable electronic device shown in FIG. 4;
FIG. 6 is a partial schematic structural view of a stationary base in the rotating mechanism of FIG. 5;
FIG. 7 is an enlarged schematic view of the fixing frame of the rotating mechanism shown in FIG. 5;
FIG. 8 is an enlarged schematic view of the main swing arm of the swing mechanism of FIG. 5;
FIG. 9 is a schematic view of the synchronizing assembly of the rotating mechanism of FIG. 5;
FIG. 10 is a schematic structural view of the synchronizing assembly of FIG. 9 in a folded state;
FIG. 11 is a schematic cross-sectional view of the rotating mechanism of FIG. 5 in a flattened state;
FIG. 12 is a schematic diagram of the synchronization assembly of FIG. 9 in another embodiment;
fig. 13 is a structural schematic view of the turning mechanism shown in fig. 5 in a folded state.
Detailed Description
The embodiments of the present application will be described below with reference to the drawings.
With the development of technology, the appearance (ID) of electronic devices (such as mobile phones and tablet computers) tends to be developed from a bar-type machine to a folder. The folder has a large-area screen in an opening state, fully meets the visual experience of consumers, and is small in size and convenient to carry in a closing state. Most of folding machines in the prior art realize synchronous motion through a synchronous gear in a synchronous mechanism. However, the existing synchronous gears have poor transmission smoothness. The application provides a slewing mechanism adopts face gear and spur gear meshing, can promote slewing mechanism's rotation stationarity to can promote user's use and experience.
Referring to fig. 1 to 3, fig. 1 is a schematic structural diagram of a foldable electronic device 500 provided in an embodiment of the present application in a first state, fig. 2 is a schematic structural diagram of the foldable electronic device 500 provided in the embodiment of the present application in a second state, and fig. 3 is a schematic structural diagram of the foldable electronic device 500 provided in the embodiment of the present application in a third state.
For convenience of description, a width direction of the foldable electronic device 500 is defined as an X direction, a length direction of the foldable electronic device 500 is defined as a Y direction, and a thickness direction of the foldable electronic device 500 is defined as a Z direction. The X direction, the Y direction and the Z direction are mutually vertical in pairs.
Foldable electronic device 500 includes, but is not limited to, a cell phone (cellular phone), a notebook (notebook computer), a tablet (tablet personal computer), a laptop (laptop computer), a personal digital assistant (personal digital assistant), a wearable device (wearable device), or a vehicle-mounted device (mobile device). In the embodiment of the present application, the foldable electronic device 500 is taken as a mobile phone for example.
The foldable electronic device 500 is shown in fig. 1 in a folded state, the foldable electronic device 500 is shown in fig. 2 in a semi-unfolded state, and the foldable electronic device 500 is shown in fig. 3 in a flattened state. The foldable electronic device 500 shown in fig. 2 has an unfolding angle α of 90 degrees, and the foldable electronic device 500 shown in fig. 3 has an unfolding angle β of 180 degrees.
It should be noted that the angles illustrated in the embodiments of the present application are all allowed to have a slight deviation. For example, the unfolding angle α of the foldable electronic device 500 shown in fig. 2 is 90 degrees, which means that α may be 90 degrees, or may be about 90 degrees, such as 80 degrees, 85 degrees, 95 degrees, or 100 degrees. The unfolding angle β of the foldable electronic device 500 shown in fig. 3 is 180 degrees, which means that β may be 180 degrees, or may be about 180 degrees, such as 170 degrees, 175 degrees, 185 degrees, 190 degrees, and the like. The angles illustrated hereinafter are to be understood in the same way.
The foldable electronic device 500 shown in the embodiment of the present application is an electronic device that can be folded once. In other embodiments, the foldable electronic device 500 may also be an electronic device that can be folded multiple times (more than two times). At this time, the foldable electronic device 500 may include a plurality of portions, and adjacent two portions may be folded relatively close to each other until the foldable electronic device 500 is in a folded state, and adjacent two portions may be unfolded relatively far from each other until the foldable electronic device 500 is in a flattened state.
Referring to fig. 4, fig. 4 is an exploded view of the foldable electronic device 500 shown in fig. 3.
The foldable electronic device 500 includes a folding apparatus 200 and a display 300, and the display 300 is mounted to the folding apparatus 200. The display screen 300 includes a display surface 340 and a mounting surface 350, the display surface 340 and the mounting surface 350 being disposed opposite to each other. The display surface 340 is used for displaying characters, images, videos, and the like. The display screen 300 includes a first portion 310, a second portion 320, and a foldable portion 330. The foldable portion 330 is located between the first portion 310 and the second portion 320, and the foldable portion 330 may be bent in the Y direction. The first portion 310, the second portion 320 and the foldable portion 330 together constitute the display 300. In this embodiment, the display panel 300 is a flexible display panel, such as an organic light-emitting diode (OLED) display panel, an active-matrix organic light-emitting diode (active-matrix organic light-emitting diode) display panel, an AMOLED (active-matrix organic light-emitting diode) display panel, a mini-led (mini-organic light-emitting diode) display panel, a micro-led (micro-organic light-emitting diode) display panel, a micro-OLED (quantum dot light-emitting diode) display panel, and a QLED (quantum dot light-emitting diode) display panel.
The folding device 200 includes a first housing 210, a second housing 220 and the rotating mechanism 100, the first housing 210 has a first receiving slot 230, the second housing 220 has a second receiving slot 240, and the first receiving slot 230 and the second receiving slot 240 are communicated to form a receiving slot of the rotating mechanism 100. The rotating mechanism 100 is installed in the accommodating groove and is fixedly connected to the first casing 210 and the second casing 220, so as to realize the rotating connection between the first casing 210 and the second casing 220. The display screen 300 is mounted to the folder 200, and the mounting surface 350 is fixedly connected to the folder 200. Specifically, the first housing 210 carries a first portion 310 of the display screen 300, and the second housing 220 carries a second portion 320. In other words, the first portion 310 is mounted to the first housing 210 and the second portion 320 is mounted to the second housing 220. Wherein the rotating mechanism 100 is disposed opposite to the foldable portion 330. The first housing 210 and the second housing 220 can be relatively rotated by the rotating mechanism 100, so that the folding device 200 is switched between the folded state and the unfolded state.
Referring to fig. 1, the first housing 210 and the second housing 220 rotate relative to each other through the rotating mechanism 100, and the display screen 300 is folded by the relative approach of the first housing 210 and the second housing 220, so that the foldable electronic device 500 is folded. When the foldable electronic device 500 is in the folded state, the foldable portion 330 of the display screen 300 is folded, and the first portion 310 and the second portion 320 are disposed opposite to each other. At this time, the display screen 300 is located between the first casing 210 and the second casing 220, so that the probability that the display screen 300 is damaged can be greatly reduced, and the display screen 300 can be effectively protected.
Referring to fig. 2 and fig. 4, the first housing 210 and the second housing 220 rotate relatively through the rotating mechanism 100, and the display screen 300 is driven to be unfolded by relatively moving the first housing 210 and the second housing 220 away from each other, so that the foldable electronic device 500 is unfolded to a half-unfolded state. When the foldable electronic device 500 is in the half-unfolded state, the first housing 210 and the second housing 220 are unfolded to form an included angle α, and the first portion 310 and the second portion 320 are unfolded relatively to each other and drive the foldable portion 330 to unfold. At this time, the angle between the first portion 310 and the second portion 320 is α. In this example, α is 90 degrees. In other embodiments, α may also be about 90 degrees, and may also be 80 degrees, 85 degrees, 95 degrees, 100 degrees, or the like.
Referring to fig. 3 and fig. 4, the first housing 210 and the second housing 220 rotate relatively through the rotating mechanism 100, and the display screen 300 is further unfolded by the relative distance between the first housing 210 and the second housing 220 until the foldable electronic device 500 is unfolded. When the folding device 200 is in the unfolded state, the included angle between the first housing 210 and the second housing 220 is β. The foldable portion 330 is unfolded and the first portion 310 and the second portion 320 are relatively unfolded. At this time, included angles among the first portion 310, the second portion 320, and the foldable portion 330 are all β, and the display screen 300 has a large-area display area, so that large-screen display of the foldable electronic device 500 is realized, and user experience is improved. In this example, β is 180 degrees. In other embodiments, β may also be about 180 degrees, may be 170 degrees, 175 degrees, 185 degrees, 190 degrees, and so on.
It should be noted that the included angle α and the included angle β are both included angles between the first casing 210 and the second casing 220, and are only used for distinguishing the different angles between the first casing 210 and the second casing 220 in different states of the foldable electronic device 500. The included angle α is an angle between the first housing 210 and the second housing 220 when the foldable electronic device 500 is in the half-unfolded state; the included angle β is an angle between the first housing 210 and the second housing 220 when the foldable electronic device 500 is in the unfolded state.
Referring to fig. 5, fig. 5 is a schematic structural diagram of the rotating mechanism 100 in the foldable electronic device 500 shown in fig. 4.
The rotating mechanism 100 includes a fixed base 10, a fixed frame 20, a main swing arm 30, and a synchronizing assembly 40. The main swing arm 30 and the synchronizing assembly 40 are arranged at intervals along the length direction of the fixed base 10, the main swing arm 30 and the fixed base 10 are connected in a rotating and sliding manner, and the synchronizing assembly 40 and the fixed base 10 are connected in a rotating manner. The fixed frame 20 is rotatably connected with the main swing arm 30 and slidably connected with the synchronizing assembly 40. The foldable portion 330 of the display screen 300 is disposed opposite to the main swing arm 30, the stationary frame 20, and the stationary base 10. When the fixing frame 20 rotates relative to the fixed base 10, the main swing arm 30 and the synchronizing assembly 40 are driven to rotate relative to the fixed base 10, so that the rotation of the rotating mechanism 100 is realized, and the bending of the display screen 300 is realized.
Fig. 5 shows only a part of the rotation mechanism 100 in the positive Y-axis direction. The fixed frame 20, the main swing arm 30 and the synchronizing assembly 40 are a set of sub-structures. The whole rotating mechanism 100 has at least two sets of the above substructures, and two opposite ends of the fixed base 10 in the Y direction are provided with one set of the substructures. That is, one end of the fixed base 10 is provided with the fixed frame 20, the main swing arm 30 and the synchronizing assembly 40, and the other end of the fixed base 10 is also provided with the fixed frame 20, the main swing arm 30 and the synchronizing assembly 40. In order to enhance the stability of the whole rotating mechanism 100, a set of substructures is additionally arranged between the substructures at the two ends of the fixed base 10, and the substructures are located in the middle of the fixed base 10. In order to further enhance the stability of the whole rotating mechanism 100, two sets of substructures may be added between the substructures at both ends of the fixed base 10. The number of substructures can be adjusted according to actual conditions.
In one set of the above substructures, the holder 20 includes a first holder 21 and a second holder 22. The main swing arm 30 includes a first main swing arm 31 and a second main swing arm 32. The first main swing arm 31 and the first fixing frame 21 are installed at one side of the fixed base 10, and the second main swing arm 32 and the second fixing frame 22 are installed at the other side of the fixed base 10. One end of the first main swing arm 31 is rotatably and slidably connected to the fixed base 10, and the other end of the first main swing arm 31 is rotatably connected to the first fixed frame 21. When the first fixing frame 21 rotates relative to the fixing base 10, the first main swing arm 31 is driven to rotate relative to the fixing base 10, and the first main swing arm 31 is driven to rotate relative to the first fixing frame 21. One end of the second main swing arm 32 is rotatably and slidably connected to the fixed base 10, and the other end of the first main swing arm 31 is rotatably connected to the second fixed frame 22. When the second fixing frame 22 rotates relative to the fixed base 10, the second main swing arm 32 is driven to rotate relative to the fixed base 10, and the second main swing arm 32 is driven to rotate relative to the second fixing frame 22.
In one embodiment, the rotating mechanism 100 further comprises a platen, a platen swing arm, and a support plate (not shown). The support plate is mounted to the fixed base 10 for supporting the display screen 300. The pressure plate swing arm is connected with the pressure plate in a sliding mode and is rotatably connected with the fixed base 10, and the pressure plate is rotatably connected with the fixed frame 20. When the rotating mechanism 100 is in the flat state, the display screen 300 is supported by the pressing plate and the supporting plate together.
Referring to fig. 6, fig. 6 is a partial structural schematic view of the fixed base 10 in the rotating mechanism 100 shown in fig. 5.
The fixing base 10 is in a strip shape, and the length direction of the fixing base 10 is parallel to the Y direction. The fixed base 10 includes a bottom plate 11, a first side plate 12, a second side plate 13, a first end plate 14, and a second end plate (not shown). The first side plate 12 and the second side plate 13 are disposed opposite to each other, and the first side plate 12 and the second side plate 13 are respectively connected to two opposite sides of the bottom plate 11 in the X direction. The first end plate 14 and the second end plate are opposite to each other, and the first end plate 14 and the second end plate are connected between the first side plate 12 and the second side plate 13 and are respectively connected to two opposite sides of the bottom plate 11 in the Y direction.
The base plate 11 is provided with a first rotation groove 111 and a second rotation groove 112. The bottom walls of the first and second rotating grooves 111 and 112 are arc-shaped. The first rotation groove 111 and the second rotation groove 112 are opposed to each other and are disposed at an interval in the X direction. The first rotating groove 111 is used for mounting the first main swing arm 31, and the first main swing arm 31 can slide and rotate in the first rotating groove 111. The second rotating groove 112 is used for mounting the second main swing arm 32, and the second main swing arm 32 can slide and rotate in the second rotating groove 112.
The bottom plate 11 is further provided with a receiving groove 114. The receiving groove 114 includes a first sub-groove 1141, a second sub-groove 1142, and a third sub-groove 1143. The first subslot 1141 and the second subslot 1142 are arranged side by side and at intervals along the X direction, and the length direction of the first subslot 1141 and the second subslot 1142 is parallel to the Y direction. The third subslot 1143 is located between the first subslot 1141 and the second subslot 1142, and a length direction of the third subslot 1143 is parallel to the X direction. The first, second and third subslots 1141, 1142, 1143 are used to mount the synchronization assembly 40.
In one embodiment, the rotation mechanism 100 further comprises a sub swing arm and a platen swing arm (not shown). The fixed base 10 is further provided with a first mounting portion and a second mounting portion (not shown). The first mounting portion is used for mounting the swing sub-arm so that the swing sub-arm can rotate relative to the fixed base 10. The second mounting portion is used for mounting the pressing plate swing arm so that the pressing plate swing arm can rotate relative to the fixed base 10.
Fig. 6 shows only a part of the structure of the fixed base 10 in the positive Y-axis direction, and the structure of the fixed base 10 in the negative Y-axis direction and the structure in the positive Y-axis direction are axisymmetric or centrosymmetric.
Referring to fig. 7, fig. 7 is an enlarged schematic structural view of the fixing frame 20 in the rotating mechanism 100 shown in fig. 5.
The holder 20 includes a first holder 21 and a second holder 22. The first fixing frame 21 is a long strip-shaped plate-shaped structure with thickness. First mount 21 includes a first upper surface 2111, a first lower surface 2112, a first side surface 2113, a second side surface 2114, a first surface 2115, and a second surface 2116. First upper surface 2111 is disposed opposite first lower surface 2112, first side surface 2113 is disposed opposite second side surface 2114, and first surface 2115 is disposed opposite second surface 2116. First side surface 2113 and second side surface 2114 are each connected between first upper surface 2111 and first lower surface 2112, and first surface 2115 and second surface 2116 are each connected between first side surface 2113 and second side surface 2114.
The first fixing frame 21 is provided with a first notch 212, a first sliding groove 213 and a first guiding groove 214. The first notch 212 is disposed on the first side surface and extends through the first upper surface 2111 and the first lower surface 2112. The sidewall of the first notch 212 is provided with a first rotating hole 215, and the extending direction of the axis of the first rotating hole 215 is parallel to the Y direction. The first rotating hole 215 is used for installing the first main swing arm 31 so as to rotatably connect the first main swing arm 31 with the first fixing frame 21. The first sliding slot 213 and the first notch 212 are spaced apart along the Y direction, and the first sliding slot 213 penetrates the first side surface 2113 and the second side surface 2114. The first sliding slot 213 is used for sliding connection with the first synchronous swing arm 41. First channel 214 is arcuate. First guide slot 214 is disposed on first surface 2115, and opposite ends of first guide slot 214 penetrate first side surface 2113. When the rotating mechanism 100 further includes a pressing plate, the first guiding groove 214 is used for mounting the pressing plate, so that the pressing plate is slidably and rotatably connected with the first fixing frame 21.
The second fixing frame 22 and the first fixing frame 21 are mirror symmetric structures, and the second fixing frame 22 and the first fixing frame 21 are axisymmetric with respect to the symmetry axis O. The second mount 22 includes a second upper surface 2211, a second lower surface 2212, a third side surface 2213, a fourth side surface 2214, a third surface 2215, and a fourth surface 2216 that enclose an exterior surface of the second mount 22. The second fixing frame 22 is provided with a second notch 222, a second sliding groove 223 and a second guiding groove 224. The structure of the second notch 222 is the same as that of the first notch 212, and a second rotation hole 225 is formed in a sidewall of the second notch 222. The second rotation hole 225 is used for mounting the second swing main arm 32, so that the second swing main arm 32 is rotatably connected with the second fixing frame 22. The second sliding groove 223 is used for sliding connection with the second synchronizing swing arm 42. When the rotating mechanism 100 further includes a pressing plate, the second guiding groove 224 is used for mounting the pressing plate, so that the pressing plate is slidably and rotatably connected with the second fixing frame 22.
Referring to fig. 8, fig. 8 is an enlarged schematic structural view of the main swing arm 30 in the rotating mechanism 100 shown in fig. 5.
The main swing arm 30 includes a first main swing arm 31 and a second main swing arm 32. The first main swing arm 31 includes a first rotating body 311, a first swing body 312, and a first rotating shaft 313. The first rotation body 311 has a circular arc plate-shaped structure, and the structure of the first rotation body 311 matches the structure of the first rotation groove 111 of the fixed base 10. The first swinging member 312 has a plate-like structure. First swinging member 312 has one end fixedly connected to first rotor 311 and the other end fixedly connected to first shaft 313. The axial center extension direction of the first rotation shaft 313 is parallel to the Y direction. The first main swing arm 31 is mounted in the first rotating groove 111, and is configured to rotate and slidably connect with the fixed base 10, and is rotatably connected with the first fixed frame 21.
The second main swing arm 32 has the same structure as the first main swing arm 31. The second main swing arm 32 includes a second rotating body 321, a second swing body 322, and a second rotating shaft 323. The second main swing arm 32 is mounted on the second rotating groove 112 of the fixed base 10, and is used for rotating and sliding connection with the fixed base 10 and rotating connection with the second fixing frame 22.
Referring to fig. 5, the first fixing frame 21 and the first main swing arm 31 are located at one side of the fixing base 10, that is, in the X-axis negative direction of the fixing base 10. The second fixing frame 22 and the second main swing arm 32 are located on the other side of the fixing base 10, that is, in the positive X-axis direction of the fixing base 10. Wherein the first rotating body 311 of the first main swing arm 31 is installed in the first rotating groove 111, and the first rotating body 311 can slide and rotate in the first rotating groove 111. The first rotating shaft 313 is installed in the first rotating hole 215 of the first fixing frame 21, and the first rotating shaft 313 can rotate in the first rotating hole 215. The first fixing frame 21 is fixedly connected with the first housing 210. The second main swing arm 32 is arranged side by side with the first main swing arm 31 in the X direction. The second rotator 321 of the second main swing arm 32 is installed in the second rotation groove 112, and the second rotator 321 can slide and rotate in the second rotation groove 112. The second rotating shaft 323 is installed in the second rotating hole 225 of the second fixing frame 22, and the second rotating shaft 323 can rotate in the second rotating hole 225. The second fixing frame 22 is fixedly connected with the second housing 220.
The rotation of the first housing 210 relative to the fixed base 10 can drive the first fixed frame 21 to rotate relative to the fixed base 10, thereby driving the first main swing arm 31 to rotate, and rotating the first rotating shaft 313 in the first rotating hole 215, and the first rotating body 311 rotates in the first rotating groove 111. The second housing 220 rotates relative to the fixed base 10, and drives the second fixing frame 22 to rotate relative to the fixed base 10, so as to drive the second main swing arm 32 to rotate, and make the second rotating shaft 323 rotate in the second rotating hole 225, and the second rotating body 321 rotates in the second rotating groove 112. The rotation direction of the first fixing frame 21 is opposite to the rotation direction of the second fixing frame 22, and the rotation direction of the first main swing arm 31 is opposite to the rotation direction of the second main swing arm 32. For example, the rotating mechanism 100 is driven byWhen the unfolded state is switched to the folded state, the first fixing frame 21 and the first main swing arm 31 are clockwise ω 1 Rotating, the second fixed frame 22 and the second main swing arm 32 counterclockwise omega 2 And (4) rotating. When the rotating mechanism 100 is switched from the folded state to the unfolded state, the first fixing frame 21 and the first main swing arm 31 are counterclockwise ω 2 Rotating, the second fixed frame 22 and the second main swing arm 32 rotate clockwise omega 1 And (4) rotating.
In this embodiment, by providing the first fixing frame 21 and the second fixing frame 22, and fixedly connecting the first fixing frame 21 and the first housing 210, and fixedly connecting the second fixing frame 22 and the second housing 220, the connection strength between the fixing frame 20 and the housing can be increased, and the stability of the foldable electronic device 500 in rotation can be improved. Furthermore, the first main swing arm 31 and the second main swing arm 32 are provided, so that the first fixing frame 21 and the second fixing frame 22 can rotate relative to the fixed base 10.
Referring to fig. 9, fig. 9 is a schematic structural diagram of the synchronization unit 40 in the rotating mechanism 100 shown in fig. 5.
The synchronizing assembly 40 includes a first synchronizing swing arm 41, a second synchronizing swing arm 42, and a synchronizer 1. The first synchronizing swing arm 41 and the second synchronizing swing arm 42 are respectively located on two opposite sides of the synchronizing member 1 in the X direction, and are both fixedly connected with the synchronizing member 1. The synchronizer 1 is installed in the fixed base 10 and can rotate in the fixed base 10. When the first synchronization swing arm 41 rotates relative to the fixed base 10, the synchronization member 1 is driven to rotate, so as to drive the second synchronization swing arm 42 to rotate, and thus the first synchronization swing arm 41 and the second synchronization swing arm 42 rotate synchronously.
The synchronizer 1 includes a first rotating portion 43, a second rotating portion 44, and a third rotating portion 45. The first rotating portion 43 includes a first rotating shaft 431 and a first gear 432. The extending direction of the first rotation shaft 431 is parallel to the Y direction. The first gear 432 is a spur gear. The first gear 432 includes a first outer circumferential surface 4321. The first outer circumferential surface 4321 is an outer surface surrounding the circumference of the first gear 432. The first gear 432 includes first teeth 4322. In this embodiment, the first teeth 4322 are straight teeth. In other embodiments, the first teeth 4322 may also be helical teeth or arc-shaped teeth. The first teeth 4322 are plural. The first teeth 4322 are disposed at intervals on the first outer circumferential surface 4321. The first gear 432 is fixedly installed on the first rotating shaft 431, and an axis of the first gear 432 is aligned with an axis of the first rotating shaft 431. When the first rotating shaft 431 rotates around its axis, the first gear 432 and the first rotating shaft 431 are driven to rotate simultaneously.
The second rotating portion 44 includes a second rotating shaft 441 and a second gear 442. The second rotation axis 441 extends in a direction parallel to the Y direction. The second gear 442 is a spur gear. The second gear 442 includes a second outer circumferential surface 4421. The second outer circumferential surface 4421 is an outer surface surrounding the circumference of the second gear 442. The second gear 442 includes second teeth 4422. In this embodiment, the second teeth 4422 are straight teeth. In other embodiments, the second teeth 4422 may also be helical teeth or arcuate teeth. The second teeth 4422 are plural. The plurality of second teeth 4422 are provided at intervals on the second outer circumferential surface 4421. The second gear 442 is fixedly mounted on the second rotating shaft 441, and an axis of the second gear 442 and an axis of the second rotating shaft 441 are on the same straight line. When the second rotating shaft 441 rotates around the axis thereof, the second gear 442 and the second rotating shaft 441 are driven to rotate simultaneously. The second rotating shaft 441 and the first rotating shaft 431 are arranged side by side and at an interval in the X direction, and the second gear 442 and the first gear 432 are arranged side by side and at an interval in the X direction.
The third rotating portion 45 includes a third rotating shaft 451, a third gear 452, and a fourth gear 453. The third gear 452 is a face gear. The third gear 452 includes a third end face 4521. The third end surface 4521 is an axial end surface of the third gear 452. The third gear 452 includes third teeth 4522. In this embodiment, the third teeth 4522 are straight teeth. In other embodiments, the third tooth 4522 may be a helical tooth or an arc-shaped tooth as long as the third tooth 4522 and the first tooth 4322 can be engaged with each other. That is, the first tooth 4322 and the third tooth 4522 may be straight teeth, oblique teeth, or arc teeth at the same time. The third teeth 4522 are plural. A plurality of third teeth 4522 are spaced apart from the third end surface 4521. The third gear 452 is fixedly installed at one end of the third rotation shaft 451, and an axial direction of the third gear 452 is aligned with an axial direction of the third rotation shaft 451. That is, the axial direction of the third gear 452 is parallel to the X direction. The third gear 452 meshes with the first gear 432.
The fourth gear 453 is a face gear. The fourth gear 453 includes a fourth end surface 4531. The fourth end surface 4531 is an axial end surface of the fourth gear 453. The fourth gear 453 includes a fourth tooth 4532. In this embodiment, the fourth tooth 4532 is a straight tooth. In other embodiments, the fourth tooth 4532 may also be a helical tooth or an arc-shaped tooth, as long as the fourth tooth 4532 and the second tooth 4422 can be engaged with each other. That is, the second tooth 4422 and the fourth tooth 4532 may be straight teeth, helical teeth, or arc teeth. The fourth teeth 4532 are plural. A plurality of fourth teeth 4532 are spaced from the fourth end surface 4531. The fourth gear 453 is fixedly installed at an end of the third rotating shaft 451 opposite to the third gear 452, and an axial direction of the fourth gear 453 is aligned with an axial direction of the third rotating shaft 451. That is, the axial direction of the fourth gear 453 is parallel to the X direction. Wherein the orientation of the fourth teeth 4532 is opposite to the orientation of the third teeth 4522 and the fourth gear 453 is in mesh with the second gear 442.
The first synchronous swing arm 41 includes a first synchronous swing body 411 and a first shaft base 412. The first shaft holder 412 is fixedly connected to the first timing swing body 411. The second synchronous swing arm 42 includes a second synchronous swing body 421 and a second shaft bearing 422. The second bearing 422 is fixedly connected to the second synchronous oscillating body 421. The first synchronous swing arm 41 is fixedly connected with the first rotating portion 43, the second synchronous swing arm 42 is fixedly connected with the second rotating portion 44, and the first synchronous swing arm 41 and the second synchronous swing arm 42 are opposite and symmetrically arranged. The first rotating shaft 431 is installed in the first shaft seat 412 and is fixedly connected to the first shaft seat 412. The second rotating shaft 441 is installed in the second shaft seat 422 and is fixedly connected with the second shaft seat 422.
Referring to fig. 10, fig. 10 is a schematic view of the synchronization element 40 shown in fig. 9 in a folded state.
When the synchronizing assembly 40 is in the flat state, the first synchronizing swing arm 41 and the second synchronizing swing arm 42 are relatively unfolded, that is, the included angle between the first synchronizing swing arm 41 and the second synchronizing swing arm 42 is approximately 180 °. When the synchronizing assembly 40 is in the folded state, the first synchronizing swing arm 41 and the second synchronizing swing arm 42 are folded relatively. That is, the first synchronizing swing arm 41 is disposed substantially in parallel with the second synchronizing swing arm 42. When the first synchronous swinging body 411 rotates, the first shaft seat 412 is driven to rotate, so as to drive the first rotating shaft 431 to rotate synchronously, and drive the first gear 432 to rotate. When the first gear 432 rotates, the third gear 452 is driven to rotate around the third rotation axis 451, and the fourth gear 453 is driven to rotate through the third rotation axis 451, so as to drive the second gear 442 to rotate, and drive the second rotation axis 441 to rotate, so as to drive the second shaft seat 422 to rotate, so as to drive the second synchronous swinging body 421 to rotate, thereby achieving the synchronous rotation of the first synchronous swinging arm 41 and the second synchronous swinging arm 42.
The first and second synchronizing swing arms 41 and 42 rotate in opposite directions, the first and second gears 432 and 442 rotate in opposite directions, and the third and fourth gears 452 and 453 rotate coaxially in the same direction. For example, when the synchronizing assembly 40 rotates from the flat state to the folded state, the first synchronizing swing arm 41 and the first gear 432 rotate counterclockwise ω 2 Rotates, the second synchronizing swing arm 42 and the second gear 442 clockwise ω 1 And (4) rotating. When the synchronizing assembly 40 rotates from the folded state to the unfolded state, the first synchronizing swing arm 41 and the first gear 432 are clockwise ω 1 Rotates, the second synchronizing swing arm 42 and the second gear 442 counterclockwise ω 2 And (4) rotating.
Referring to fig. 5 and 11 together, fig. 11 is a schematic cross-sectional view of the rotating mechanism 100 shown in fig. 5.
The synchronizing assembly 40 is installed in the fixed base 10, and the first synchronizing swing arm 41 and the second synchronizing swing arm 42 are respectively located at opposite sides of the fixed base 10 in the X direction. The first synchronous oscillating body 411 is mounted to the first sliding groove 213 of the first fixing frame 21, and the first synchronous oscillating body 411 can slide along the first sliding groove 213, and the second synchronous oscillating body 421 is mounted to the second sliding groove 223 of the second fixing frame 22, and the second synchronous oscillating body 421 can slide along the second sliding groove 223. The synchronizer 1 is mounted in the housing groove 114 of the fixed base 10, the first rotating shaft 431 is mounted in the first sub-groove 1141, the second rotating shaft 441 is mounted in the second sub-groove 1142, and the third rotating shaft 451 is mounted in the third sub-groove 1143. The first, second, and third rotation shafts 431, 441, 451 are rotatably connected to the fixed base 10. The first rotation shaft 431 and the second rotation shaft 441 both extend in parallel to the Y direction, and the third rotation shaft 451 extends in parallel to the X direction. That is, the first and second rotating shafts 431 and 441 are disposed in the length direction of the fixing base 10, and the third rotating shaft 451 is disposed in the width direction of the fixing base 10.
When the first fixing frame 21 rotates relative to the fixing base 10, the first synchronous swinging arm 41 is driven to rotate, and the first synchronous swinging body 411 slides in the first sliding slot 213. When the first synchronization swing arm 41 rotates, the first rotation shaft 431 is driven to rotate at the same time, so that the first gear 432 is driven to rotate. When the first gear 432 rotates, the third gear 452 rotates, and the third rotating shaft 451 rotates to rotate the fourth gear 453, and thus the second gear 442 rotates. When the second gear 442 rotates, the second rotating shaft 441 is driven to rotate, so as to drive the second synchronous swinging arm 42 to rotate, and the second synchronous swinging body 421 slides in the second sliding slot 223, thereby realizing the synchronous rotation of the first synchronous swinging arm 41 and the second synchronous swinging arm 42, and the synchronous rotation of the first fixing frame 21 and the second fixing frame 22.
In this embodiment, by providing the synchronizing member 1, and when the first synchronizing swing arm 41 rotates, the synchronizing member 1 can drive the second synchronizing swing arm 42 to rotate, so that the first synchronizing swing arm 41 and the second synchronizing swing arm 42 can rotate synchronously, and the rotating mechanism 100 and the foldable electronic device can rotate synchronously.
In this embodiment, the first gear 432 and the second gear 442 are straight gears, the third gear 452 and the fourth gear 453 are face gears, the axial direction of the first gear 432 is perpendicular to the axial direction of the third gear 452, and the axial direction of the second gear 442 is perpendicular to the axial direction of the fourth gear 453, so that when the first gear 432 drives the third gear 452 to rotate, the force applied to the third tooth 4522 by the first tooth 4322 is along the tangential direction of the third gear 452, and the force applied to the first tooth 4322 by the third tooth 4522 is along the tangential direction of the first gear 432. Meanwhile, when the fourth gear 442 is rotated by the fourth gear 453, the force applied to the second tooth 4422 by the fourth tooth 4532 is tangential to the second gear 442, and the force applied to the fourth tooth 4532 by the second tooth 4422 is tangential to the fourth gear 453. That is to say, the first gear 432, the second gear 442, the third gear 452 and the fourth gear 453 are not subjected to axial acting force, so that axial errors of the first gear 432, the second gear 442, the third gear 452 and the fourth gear 453 can be reduced or even eliminated, the transmission performance of the synchronizing member 1 is improved, the stability and the reliability of the rotation of the synchronizing assembly 40 are improved, meanwhile, the connecting structure between the synchronizing member 1 and the fixed base 10 is simplified, the weight of the synchronizing assembly 40 is reduced, and the rotating mechanism 100 and the foldable electronic device are thinned. Meanwhile, when the synchronous component 40 is designed, the tooth surface contact condition does not need to be checked, the design process can be simplified, and the labor force is saved. It should be noted that the term "tangential" as used herein refers to a tangential direction, i.e., a direction perpendicular to the radial direction. For example, "tangential to the third gear 452" refers to a direction perpendicular to the radial direction of the third gear 452.
In addition, in this embodiment, the third gear 452 is a face gear, so that the contact ratio between the first gear 432 and the third gear 452 can be increased, and the fourth gear 453 is a face gear, so that the contact ratio between the second gear 442 and the fourth gear 453 can be increased, so that the bearing capacity of the gears can be improved, the transmission stability of the synchronizer 1 can be improved, and the rotation stability of the rotating mechanism 100 and the foldable electronic device can be improved.
Meanwhile, in the embodiment, the first gear 432 and the second gear 442 are formed by straight gears, the third gear 452 and the fourth gear 453 are formed by face gears, and both the straight gears and the face gears can be standard gears, so that the structure is simple, the maintenance cost is low, and the interchangeability is high. In addition, the shape of the face gear can be adjusted according to practical application scenes and use conditions, so that the face gear has higher flexibility and plays a role in saving cost.
Referring to fig. 12, fig. 12 is a schematic structural diagram of another embodiment of the synchronization module 40 shown in fig. 9.
The present embodiment is different from the embodiment shown in fig. 9 in that the first gear 432 and the second gear 442 are face gears, and the third gear 452 and the fourth gear 453 are spur gears in the present embodiment.
The first gear 432 further includes a first end surface 4323, the first end surface 4323 is perpendicularly connected to the first outer circumferential surface 4321, and the first end surface 4323 is an axial end surface of the first gear 432. The first teeth 4322 are spaced apart from the first end surface 4323, and the first teeth 4322 face the negative Y-axis direction. The second gear 442 further includes a second end surface 4423, the second end surface 4423 is perpendicularly connected to the second outer circumferential surface 4421, and the second end surface 4423 is an axial end surface of the second gear 442. A plurality of second teeth 4422 are arranged on the second end surface 4423 at intervals, and the second teeth 4422 face to the negative direction of the Y axis.
The third gear 452 further includes a third outer circumferential surface 4523, the third outer circumferential surface 4523 is perpendicularly connected to the third end surface 4521, and the third outer circumferential surface 4523 is an outer surface around the circumference of the third gear 452. A plurality of third teeth 4522 are provided at intervals on the third outer circumferential surface 4523 and face the first teeth 4322, and the third gear 452 meshes with the first gear 432. The fourth gear 453 further includes a fourth outer circumferential surface 4533, the fourth outer circumferential surface 4533 is perpendicularly connected to the fourth end surface 4531, and the fourth outer circumferential surface 4533 is an outer surface surrounding a circumferential direction of the fourth gear 453. A plurality of fourth teeth 4532 are spaced apart from the fourth outer circumferential surface 4533 and face the second teeth 4422, and the fourth gear 453 meshes with the second gear 442.
When the first gear 432 rotates, the first teeth 4322 apply a force to the third teeth 4522 to rotate the third gear 452, so that the fourth gear 453 is rotated by the third rotating shaft 451. When the fourth gear 453 rotates, the fourth tooth 4532 applies a force to the second tooth 4422 to rotate the second gear 442, so that the first gear 432, the second gear 442, the third gear 452, and the fourth gear 453 rotate synchronously, and the synchronizing assembly 40 rotates synchronously.
In this embodiment, the first gear 432 and the second gear 442 are face gears, the third gear 452 and the fourth gear 453 are spur gears, the axial direction of the first gear 432 is perpendicular to the axial direction of the third gear 452, and the axial direction of the second gear 442 is perpendicular to the axial direction of the fourth gear 453, so that no axial acting force is applied to the first gear 432, the second gear 442, the third gear 452 and the fourth gear 453, thereby reducing or even eliminating the axial error of the first gear 432 and the third gear 452, improving the transmission performance of the synchronizing member 1, and improving the stability and reliability of the rotation of the synchronizing assembly 40. Moreover, the third gear 452 and the fourth gear 453 are face gears, so that the contact ratio between the first gear 432 and the third gear 452 and the contact ratio between the second gear 442 and the fourth gear 453 can be improved, the bearing capacity of the gears can be improved, the transmission stability of the synchronizer 1 can be improved, and the rotation stability of the rotating mechanism 100 and the foldable electronic device can be improved.
In other embodiments, the first gear 432 may be a spur gear, the third gear 452 may be a face gear, the fourth gear 453 may be a spur gear, and the second gear 442 may be a face gear. Alternatively, the first gear 432 may be a face gear, the third gear 452 may be a spur gear, the fourth gear 453 may be a face gear, and the second gear 442 may be a spur gear. As long as one of the first gear 432 and the third gear 452 is a face gear and the other is a spur gear, and one of the second gear 442 and the fourth gear 453 is a face gear and the other is a spur gear.
In one embodiment, the rotating mechanism 100 further comprises a damping member (not shown). The damping member is installed to the stationary base 10 and is hinged with the synchronizing assembly 40. When the first synchronous swing arm 41 and the second synchronous swing arm 42 rotate relative to the fixed base 10, the damping member is abutted to generate damping force, so that the first synchronous swing arm 41 and the second synchronous swing arm 42 are prevented from rotating, damping hand feeling is provided for a user, and the use experience of the user is improved.
Referring to fig. 5 and 13, fig. 13 is a structural schematic view of the rotating mechanism 100 shown in fig. 5 in a folded state.
When the rotation mechanism 100 is in the folded state, the foldable portion 330 of the display screen 300 is located inside the rotation mechanism 100. Specifically, the foldable portion 330 is located within the escape space. Illustratively, the evacuation space is substantially "drop-shaped". At this time, the rotating mechanism 100 can avoid the R angle formed when the foldable portion 330 is bent, so that the foldable portion 330 is not bent at a large angle, thereby avoiding undesirable phenomena such as creases generated on the display screen 300 and contributing to prolonging the service life of the display screen 300.
As shown in fig. 13, when the rotating mechanism 100 is in the folded state, the rotating mechanism rotates counterclockwise by ω 2 The first fixing frame 21 is rotated to drive the first main swing arm 31 to rotate counterclockwise omega 2 The first rotating shaft 313 rotates relative to the first fixing frame 21, and at the same time, the first fixing frame 21 drives the first synchronous swing arm 41 to rotate counterclockwise by ω 2 Rotates and causes the first synchronous swinging body 411 to slide in the first sliding groove 213. The first synchronous swing arm 41 is counterclockwise omega 2 When rotating, the first rotating shaft 431 drives the first gear 432 to rotate counterclockwise by ω 2 Rotate to drive the third gear 452 to rotate, and drive the fourth gear 453 to rotate through the third rotating shaft 451, so as to drive the second gear 442 to rotate clockwise ω 1 And (4) rotating. The second gear 442 is clockwise omega 1 When rotating, the second rotating shaft 441 is driven to rotate clockwise omega 1 Rotate to drive the second synchronous swing arm 42 to rotate clockwise omega 1 Rotate and drive the second fixing frame 22 clockwise omega 1 The first synchronous swinging body 411 slides in the second slide groove 223 by rotating. The second synchronous swing arm 42 is clockwise omega 1 When rotating, the second main swing arm 32 is driven to rotate clockwise omega 1 And the second rotating shaft is rotated relative to the second fixed frame 22, so that the second fixed frame 22 and the first fixed frame 21 are relatively unfolded, the first main swing arm 31 and the second main swing arm 32 are relatively unfolded, the first synchronous swing arm 41 and the second synchronous swing arm 42 are relatively unfolded, and the rotating mechanism 100 is rotated to the flattening state (as shown in fig. 5).
As shown in FIG. 5, the rotating mechanism 100 is in the flat state, clockwise ω 1 The first fixing frame 21 is rotated to drive the first main swing arm 31 to rotate clockwise omega 1 The first rotating shaft 313 rotates relative to the first fixing frame 21, and the first fixing frame 21 drives the first synchronous swing arm 41 to rotate clockwise ω 1 Rotates and causes the first synchronous swinging body 411 to slide in the first sliding groove 213. The first synchronous swing arm 41 is clockwise omega 1 When rotating, the first rotating shaft 431 drives the first gear 432 to rotate clockwise ω 1 Rotate to drive the third gear 452 to rotate, and drive the fourth gear 453 to rotate through the third rotating shaft 451, so as to drive the second gear 442 to rotate counterclockwise by ω 2 And (4) rotating. Second gear 442 is counterclockwise omega 2 When rotating, the second rotating shaft 441 is driven to rotate counterclockwise omega 2 Rotate to drive the second synchronous swing arm 42 to rotate counterclockwise omega 2 Rotate and drive the second fixing frame 22Counterclockwise omega 2 The first synchronous swinging body 411 slides in the second slide groove 223 by rotating. The second synchronous swing arm 42 is counterclockwise omega 2 When rotating, the second main swing arm 32 is driven to rotate counterclockwise omega 2 And the second rotating shaft is rotated relative to the second fixed frame 22, so that the second fixed frame 22 and the first fixed frame 21 are folded relatively, the first main swing arm 31 and the second main swing arm 32 are folded relatively, the first synchronous swing arm 41 and the second synchronous swing arm 42 are folded relatively, and the rotating mechanism 100 is rotated to the folded state (as shown in fig. 13).
The above embodiments and embodiments of the present application are only examples and embodiments, and the scope of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present application, and all the changes or substitutions should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (12)

1. A rotation mechanism, comprising: the device comprises a fixed base, a first synchronous swing arm, a second synchronous swing arm and a synchronous piece;
the synchronous piece comprises a first gear, a second gear, a third gear and a fourth gear, the first gear and the second gear are arranged in parallel at intervals, the third gear and the fourth gear are fixedly connected and axially parallel, the third gear and the fourth gear are both positioned between the first gear and the second gear, and the axial direction of the third gear is vertical to the axial direction of the first gear; the first gear is meshed with the third gear, one of the first gear and the third gear is a straight gear, and the other gear is a face gear; the second gear is meshed with the fourth gear, one of the second gear and the fourth gear is a straight gear, and the other gear is a face gear;
the first synchronous swing arm is fixedly connected with the first gear, and the second synchronous swing arm is fixedly connected with the second gear;
the synchronous piece is arranged in the fixed base and is rotationally connected with the fixed base, and the first synchronous swing arm and the second synchronous swing arm are respectively positioned on two opposite sides of the fixed base in the width direction.
2. The rotation mechanism of claim 1, wherein the rotation mechanism has a folded state and a flattened state, wherein,
slewing mechanism is in during the exhibition flat state, first synchronous swing arm with the synchronous swing arm of second expandes relatively, works as first synchronous swing arm orientation is close to when the unable adjustment base direction rotates, first synchronous swing arm drives first gear revolve, first gear drives third gear revolve, thereby the third gear drives fourth gear revolve, the fourth gear drives second gear revolve, the second gear and then drive the synchronous swing arm orientation of second is close to first synchronous swing arm direction rotates, so that slewing mechanism is in fold condition.
3. The rotary mechanism of claim 1 or 2 wherein the first gear is a spur gear and the third gear is a face gear; the first gear comprises a plurality of first teeth, the first gear further comprises a first outer peripheral surface, and the plurality of first teeth are arranged on the first outer peripheral surface at intervals; the third gear comprises a plurality of third teeth, the third gear further comprises a third end surface, the third teeth are arranged on the third end surface at intervals, and the orientation of the third teeth is opposite to that of the first teeth.
4. The rotary mechanism of claim 3 wherein the second gear is a spur gear and the fourth gear is a face gear; the second gear comprises a plurality of second teeth, the second gear further comprises a second outer circumferential surface, and the plurality of second teeth are arranged on the second outer circumferential surface at intervals; the fourth gear comprises a plurality of fourth teeth, the fourth gear further comprises a fourth end surface, the fourth teeth are arranged on the fourth end surface at intervals, and the orientation of the fourth teeth is opposite to that of the second teeth.
5. The rotating mechanism according to claim 4, wherein the first tooth and the third tooth are straight teeth, or skewed teeth, or arc-shaped teeth; and
the second teeth and the fourth teeth are straight teeth, or inclined teeth, or arc-shaped teeth.
6. A rotation mechanism according to claim 1 or 2, wherein the first gear is a face gear and the third gear is a spur gear; the first gear comprises a plurality of first teeth, the first gear further comprises a first end surface, and the plurality of first teeth are arranged on the first end surface at intervals; the third gear comprises a plurality of third teeth, the third gear further comprises a third outer peripheral surface, the third teeth are arranged on the third outer peripheral surface at intervals, and the orientation of the third teeth is opposite to that of the first teeth.
7. The rotary mechanism of claim 6 wherein the second gear is a face gear and the fourth gear is a spur gear; the second gear comprises a plurality of second teeth, the second gear further comprises a second end face, and the second teeth are arranged on the second end face at intervals; the fourth gear comprises a plurality of fourth teeth, the fourth gear further comprises a fourth outer circumferential surface, the fourth teeth are arranged on the fourth outer circumferential surface at intervals, and the orientation of the fourth teeth is opposite to that of the second teeth.
8. The rotating mechanism according to claim 4 or 7, wherein the synchronizing member further comprises a first rotating shaft, a second rotating shaft and a third rotating shaft, the first rotating shaft, the second rotating shaft and the third rotating shaft are all rotatably connected with the fixed base, the axial directions of the first rotating shaft and the second rotating shaft are all parallel to the length direction of the fixed base, and the axial direction of the third rotating shaft is parallel to the width direction of the fixed base;
the first gear is coaxially and fixedly connected with the first rotating shaft, the second gear is coaxially and fixedly connected with the second rotating shaft, and the third gear and the fourth gear are respectively and coaxially fixed at two opposite ends of the third rotating shaft.
9. The rotating mechanism according to claim 8, wherein the first synchronizing swing arm is fixedly connected to the first rotating shaft, and the second synchronizing swing arm is fixedly connected to the second rotating shaft.
10. The rotating mechanism according to claim 9, wherein the rotating mechanism comprises a first fixing frame and a second fixing frame, the first fixing frame and the second fixing frame are respectively located at two opposite sides of the fixed base in the width direction, the first synchronizing swing arm is slidably connected with the first fixing frame, and the second fixing frame is slidably connected with the second synchronizing swing arm.
11. The rotating mechanism according to claim 10, wherein the fixed base is provided with a first rotating groove and a second rotating groove, the first rotating groove and the second rotating groove being disposed opposite to each other; the rotating mechanism comprises a first main swing arm and a second main swing arm, the first main swing arm is mounted in the first rotating groove and can slide and rotate along the first rotating groove, and the first main swing arm is rotatably connected with the first fixing frame; the second main swing arm is installed in the second rotating groove, can slide along the second rotating groove and rotate, and is rotatably connected with the second fixing frame.
12. A foldable electronic device, comprising a first housing, a second housing, a display screen, and a rotating mechanism according to any one of claims 1 to 11, wherein the rotating mechanism is connected between the first housing and the second housing, the display screen is mounted on the first housing, the second housing and the rotating mechanism, and when the rotating mechanism rotates, the first housing and the second housing rotate relatively, so as to drive the display screen to bend or unfold.
CN202222348608.6U 2022-09-02 2022-09-02 Rotating mechanism and foldable electronic equipment Active CN218564166U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116069130A (en) * 2023-04-06 2023-05-05 荣耀终端有限公司 Tensioning structure, rotating shaft mechanism and electronic equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116069130A (en) * 2023-04-06 2023-05-05 荣耀终端有限公司 Tensioning structure, rotating shaft mechanism and electronic equipment
CN116069130B (en) * 2023-04-06 2023-09-08 荣耀终端有限公司 Tensioning structure, rotating shaft mechanism and electronic equipment

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