CN115325019A

CN115325019A - Folding electronic equipment and rotating shaft mechanism thereof

Info

Publication number: CN115325019A
Application number: CN202211047935.6A
Authority: CN
Inventors: 梁子豪
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2022-08-30
Filing date: 2022-08-30
Publication date: 2022-11-11
Anticipated expiration: 2042-08-30
Also published as: CN115325019B

Abstract

The utility model relates to a foldable electronic equipment and pivot mechanism thereof, foldable electronic equipment includes the base, the slider, first driving medium and second driving medium, slider and base sliding connection, and it is protruding to have first arch and the second of locating its central axis both sides, first driving medium includes interconnect's first portion of rotating and first swing arm, first portion of rotating is connected with the base rotation, first portion of rotating has the first helicla flute with first protruding matched with, the second driving medium includes interconnect's second portion of rotating and second swing arm, second portion of rotating is connected with the base rotation, the second portion of rotating has the second helicla flute with protruding matched with of second. The utility model provides a foldable electronic equipment and pivot mechanism thereof not only can maintain good roll over motion performance to this pivot mechanism's simple structure, part is small in quantity, and spare part is convenient for process, can satisfy under the situation that needs machining precision and assembly precision, can make small and exquisite as far as possible, in order to do benefit to the miniaturization.

Description

Folding electronic equipment and rotating shaft mechanism thereof

Technical Field

The present application relates to the field of electronic devices, and in particular, to a foldable electronic device and a hinge mechanism thereof.

Background

Because the folding electronic equipment can be folded for use, the portability is further improved, and the favor of consumers is obtained. The folding electronic equipment needs to be provided with a rotating shaft mechanism to adapt to the folding use requirement.

However, under the trend of the foldable electronic device toward being lighter and thinner, the installation space for the hinge mechanism is increasingly tense, and the hinge mechanism in the related art has many parts, a complex structure, and high requirements for processing precision and assembly precision, and it is difficult to achieve the requirement of maintaining good folding performance while achieving miniaturization.

Disclosure of Invention

The application provides a folding electronic device and a rotating shaft mechanism thereof, which are used for solving the technical problem of maintaining good folding performance while meeting the requirement of miniaturization.

In one aspect, the present application provides a spindle mechanism comprising:

a base;

the sliding block is provided with a first bulge and a second bulge which are arranged on two sides of the central axis of the sliding block, and the sliding block is connected with the base in a sliding mode along the extending direction of the central axis;

the first transmission piece comprises a first rotating part and a first swing arm which are connected with each other, the first rotating part is rotationally connected with the base, and the first rotating part is provided with a first spiral groove matched with the first bulge; and

the second transmission part comprises a second rotating part and a second swing arm which are connected with each other, the second rotating part is rotationally connected with the base, and the second rotating part is provided with a second spiral groove matched with the second protrusion; when the first swing arm rotates around a first axis relative to the base, the first protrusion slides along the first spiral groove, the sliding block slides along the extending direction of the central axis relative to the base, and the second protrusion slides along the second spiral groove, so that the second swing arm rotates around a second axis relative to the base, wherein the rotating direction of the second swing arm is opposite to the rotating direction of the first swing arm.

In another aspect, the present application provides a foldable electronic device, comprising: the shell assembly comprises a first shell and a second shell, the first shell is connected with the first transmission piece, the second shell is connected with the second transmission piece, and the flexible screen is connected between the first shell and the second shell and covers the rotating shaft mechanism.

The utility model provides a foldable electronic equipment and pivot mechanism thereof, pivot mechanism includes the base, the slider, first driving medium and second driving medium, the slider is provided with first arch and second arch, first driving medium and second driving medium are equipped with first helicla flute and second helicla flute respectively, when the relative base of first swing arm rotates around first axis, first arch slides along first helicla flute, the extension direction of the relative base edge the central axis of slider slides, and the second arch slides along the second helicla flute, make the relative base of second swing arm rotate around the second axis, the rotation direction of second swing arm is opposite with the rotation direction of first swing arm, from this alright maintain the good roll-over motion performance of pivot mechanism, and the simple structure of this pivot mechanism, the part is small in quantity, compare the gear drive structure in the correlation technique, the spare part of the pivot mechanism of this application is convenient for processing, can be under the situation that satisfies to machining precision and assembly precision needs, can make as small and exquisite as far as possible, in order to do benefit to miniaturize.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic view of a foldable electronic device according to an embodiment, wherein a second housing is in a flat position;

fig. 2 is a schematic diagram of another state of a foldable electronic device according to an embodiment;

FIG. 3 is a schematic structural diagram of a spindle mechanism according to an embodiment;

fig. 4 is a schematic structural diagram illustrating a hinge mechanism of a foldable electronic device according to an embodiment when the hinge mechanism is mounted between a first housing and a second housing of the foldable electronic device;

fig. 5 is a schematic structural diagram of a hinge mechanism of a foldable electronic device according to another embodiment;

FIG. 6 is a schematic structural diagram of one embodiment of a spindle mechanism in one of its states;

FIG. 7 is a schematic configuration view of the spindle mechanism shown in FIG. 6 in another state;

FIG. 8 is a schematic structural view of the spindle mechanism shown in FIG. 6 from another perspective;

FIG. 9 is an exploded view of the spindle mechanism shown in FIG. 8;

fig. 10 is a structural diagram of the rotating shaft mechanism shown in fig. 8 from another view angle when the first and second swash plates are removed;

fig. 11 is an exploded structural view of a part of the structure of the rotating shaft mechanism shown in fig. 10;

FIG. 12 is a schematic structural view of a spindle mechanism according to another embodiment;

fig. 13 is a schematic structural view of a cover plate of a spindle mechanism according to an embodiment.

Reference numerals are as follows:

100. a foldable electronic device; 10. a shell assembly; 12. a first housing; 14. a second housing; 20. a flexible screen; 30. a rotating shaft mechanism; 31. a base; 31a, a first shaft; 31b, a second shaft; 32. a slider; 32a, a first protrusion; 32b, a second protrusion; 33. a first transmission member; 33a, a first spiral groove; 331. a first rotating section; 332. a first swing arm; 332a, a first guide bar; 34. a second transmission member; 34a, a second spiral groove; 341. a second rotating part; 342. a second swing arm; 342a, a second guide bar; 35. a first rotating assembly; 351. a first rotating member; 352. a first connecting seat; 352a, a first mating portion; 353. a first sloping plate; 353a and a first arc groove; 353b and a first guide part; 353c and a third arc groove; 36. a second rotating assembly; 361. a second rotating member; 362. a second connecting seat; 362a and a second matching part; 363. a second swash plate; 363a and a second arc groove; 363b, a second guide; 363c, a fourth arc groove; 37. a cover plate; 37a, a first housing groove; 37b, a second housing groove; z0, central axis; z1, a first axis; z2, second axis.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are shown in the drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

As used herein, "foldable electronic device" refers to a device capable of receiving and/or transmitting communication signals including, but not limited to, devices connected via any one or several of the following connections:

(1) Via wireline connections, such as via Public Switched Telephone Network (PSTN), digital Subscriber Line (DSL), digital cable, direct cable connections;

(2) Via a Wireless interface such as a cellular Network, a Wireless Local Area Network (WLAN), a digital television Network such as a DVB-H Network, a satellite Network, an AM-FM broadcast transmitter.

As one type of electronic device, a folding type electronic device may be referred to as a "mobile terminal" which is configured to communicate through a wireless interface. Examples of mobile terminals include, but are not limited to, the following electronic devices:

(1) Satellite or cellular telephones;

(2) Personal Communications System (PCS) terminals that may combine a cellular radiotelephone with data processing, facsimile and data Communications capabilities;

(3) Radiotelephones, pagers, internet/intranet access, web browsers, notebooks, calendars, personal Digital Assistants (PDAs) equipped with Global Positioning System (GPS) receivers;

(4) A conventional laptop and/or palmtop receiver;

(5) Conventional laptop and/or palmtop radiotelephone transceivers, and the like.

Referring to fig. 1, the present embodiment provides a foldable electronic device 100, and the foldable electronic device 100 may be a display-enabled device, for example, the foldable electronic device 100 includes a housing assembly 10 and a flexible screen 20 connected to the housing assembly 10. The foldable electronic device 100 may be a device without a display function, and is not limited thereto.

The housing assembly 10 forms a receiving cavity (not shown), and the foldable electronic device 100 may further include a circuit board (not shown) and a battery (not shown), both of which may be disposed in the receiving cavity of the housing assembly 10. The circuit board may integrate a processor, a power management module, a storage unit, a baseband chip, and the like of the foldable electronic device 100. In embodiments where the foldable electronic device 100 includes a flexible screen 20, the flexible screen 20 is communicatively coupled to a processor, and the battery is capable of powering the flexible screen 20 and the electronic components on the circuit board. In some embodiments, the foldable electronic device 100 may further include a camera module (not shown) communicatively coupled to the circuit board, and the battery may be capable of supplying power to the camera module. It is understood that the foldable electronic device 100 of the present embodiment includes, but is not limited to, a mobile phone, a tablet computer, and other terminal devices or other portable foldable electronic devices 100.

It should be noted that the folding electronic device 100 further includes a hinge mechanism 30, so that the hinge mechanism 30 can meet the folding requirement of the folding electronic device 100. As shown in fig. 1 and 2, the flexible screen 20 of the folding electronic device 100 can be folded around the Z-Z direction.

As shown in fig. 3 and 4, the rotating shaft mechanism 30 includes a base 31, a slider 32, a first transmission member 33, and a second transmission member 34. The slide block 32 is provided with a first protrusion 32a and a second protrusion 32b which are arranged at two sides of the central axis Z0, the slide block 32 is connected with the base 31 in a sliding way along the extending direction of the central axis Z0, the first transmission piece 33 comprises a first rotating part 331 and a first swing arm 332 which are connected with each other, the first rotating part 331 is connected with the base 31 in a rotating way, and the first rotating part 331 is provided with a first spiral groove 33a matched with the first protrusion 32 a; when the first swing arm 332 rotates about the first axis Z1 relative to the base 31, the first protrusion 32a slides along the first spiral groove 33a, and the slider 32 slides relative to the base 31. The second transmission member 34 includes a second rotating portion 341 and a second swing arm 342 connected to each other, the second rotating portion 341 is rotatably connected to the base 31, and the second rotating portion 341 has a second spiral groove 34a engaged with the second protrusion 32 b; when the second swing arm 342 rotates about the second axis Z2 with respect to the base 31, the second protrusion 32b slides along the second spiral groove 34a, and the slider 32 slides with respect to the base 31. In this embodiment, the first swing arm 332 is linked with the second swing arm 342 through the slider 32, that is, when the first swing arm 332 rotates relative to the base 31, the first swing arm 332 drives the second swing arm 342 to rotate relative to the base 31 through the slider 32. Specifically, when the first swing arm 332 rotates relative to the base 31, the slider 32 slides in the extending direction of the central axis relative to the base 31 based on the first protrusion 32a sliding along the first spiral groove 33a, and the second protrusion 32b slides along the second spiral groove 34a, so that the second swing arm 342 rotates relative to the base, wherein the rotating direction of the second swing arm 342 is opposite to the rotating direction of the first swing arm 332. Therefore, the rotating shaft mechanism 30 of the embodiment of the present application can utilize the first swing arm 332 and the second swing arm 342 to rotate in opposite directions to maintain good turning motion performance of the rotating shaft mechanism 30, and the structure of the rotating shaft mechanism 30 is simple, the number of components is small, compared with the gear transmission structure in the related art, the components of the rotating shaft mechanism 30 of the present application are convenient to process, and the rotating shaft mechanism can be made as small and exquisite as possible under the condition of meeting the requirements on processing precision and assembly precision, so as to be beneficial to miniaturization.

Referring to fig. 2 and 4, in some embodiments, the shell assembly 10 includes a first shell 12 and a second shell 14, and a spindle mechanism 30 is coupled between the first shell 12 and the second shell 14 to enable relative rotation of the first shell 12 and the second shell 14. Specifically, the first housing 12 is connected to the first transmission member 33, and the second housing 14 is connected to the second transmission member 34. The first transmission piece 33 and the second transmission piece 34 of the rotating shaft mechanism 30 can rotate relative to the base 31, so that the arrangement can meet the requirement of relative rotation of the first shell 12 and the second shell 14. It is understood that the flexible screen 20 is connected between the first housing 12 and the second housing 14, and the flexible screen 20 covers the hinge mechanism 30 to maintain the overall aesthetic appearance of the foldable electronic device 100. In this embodiment, when the first housing 12 and the second housing 14 are folded and moved relative to each other about the central axis Z0, the slider 32 slides relative to the base 31, and the first projection 32a and the second projection 32b slide along the first spiral groove 33a and the second spiral groove 34a, respectively.

The first axis Z1 and the second axis Z2 are parallel and symmetrical with respect to the central axis Z0, so that the flexible screen 20 can be stably folded or unfolded at a position corresponding to the central axis Z0 when the foldable electronic device 100 performs a folding motion.

In some embodiments, the folding electronic device 100 can be folded and unfolded manually, or the folding and unfolding of the folding electronic device 100 can be achieved by a driving member disposed in the folding electronic device 100. Illustratively, the sliding block 32 is connected with a driving member for driving the sliding block 32 to slide relative to the base 31, so that the first protrusion 32a and the second protrusion 32b of the sliding block 32 will slide along the first spiral groove 33a and the second spiral groove 34a, respectively, and then the first rotating portion 331 and the second rotating portion 341 will rotate relative to the base 31, so that the first transmission member 33 and the second transmission member 34 can be used to drive the first casing 12 and the second casing 14 to fold and unfold, thereby folding and unfolding the foldable electronic device 100.

The direction of rotation of the second helical groove 34a is opposite to the direction of rotation of the first helical groove 33a, and the pitch of the second helical groove 34a is the same as the pitch of the first helical groove 33a, and it should be noted that the opposite direction of rotation here means that the first helical groove 33a and the second helical groove 34a are arranged around opposite directions, specifically, if one of the first helical groove 33a and the second helical groove 34a is arranged in a forward direction, the other is arranged in a reverse direction. In this embodiment, since the pitch of the second spiral groove 34a is the same as the pitch of the first spiral groove 33a, when the driving element drives the slider 32 to slide relative to the base 31, the slider 32 drives the first rotating portion 331 and the second rotating portion 341 to rotate in opposite directions by an equal angle synchronously via the first protrusion 32a and the second protrusion 32b, so that the first housing 12 and the second housing 14 rotate synchronously relative to the base 31 during the folding motion of the folding electronic device 100, thereby improving the use experience.

In some embodiments, the shaft mechanism 30 further includes a detection component disposed between the slider 32 and the base 31 for detecting a position of the slider 32 relative to the base 31. Since the slider 32 is in transmission connection with the first transmission piece 33 and the second transmission piece 34 through the first protrusion 32a and the second protrusion 32b, in this way, when the slider 32 slides relative to the base 31, the first transmission piece 33 and the second transmission piece 34 rotate relative to the base 31, and then the position of the slider 32 relative to the base 31 is detected by using the detection component, so that the rotation positions of the first transmission piece 33 and the second transmission piece 34 relative to the base 31 in corresponding states can be obtained, and the detection of the unfolding angle of the folding electronic device 100 is realized. It should be noted that the unfolding angle of the foldable electronic device 100 refers to the folding angle relative to the folded position. In the folded position, the unfolding angle of the foldable electronic device 100 is 0 °, and if the foldable electronic device 100 is in the unfolded position, the display surface of the flexible screen 20 is flattened, and the unfolding angle of the foldable electronic device 100 is 180 °.

As shown in fig. 5, in some embodiments, the hinge mechanism 30 further includes a first rotating assembly 35 and a second rotating assembly 36 located at two sides of the base 31, and the first rotating assembly 35 and the second rotating assembly 36 are respectively connected to the first swing arm 332 and the second swing arm 342 in an interlocking manner. It should be noted that the linkage connection means that one of the two structural members moves and the other moves along with the movement. In this embodiment, the first rotating assembly 35 and the second rotating assembly 36 are connected to the first housing 12 and the second housing 14, respectively, and the first housing 12 and the first swing arm 332 are linked to each other by the linkage connection of the first rotating assembly 35 and the first swing arm 332, and correspondingly, the second housing 14 and the second swing arm 342 are linked to each other by the linkage connection of the second rotating assembly 36 and the second swing arm 342. In this way, the relative movement between the first casing 12 and the second casing 14 is correlated with the relative movement between the first swing arm 332 and the second swing arm 342, so that the first rotating assembly 35 and the second rotating assembly 36 can adapt to the state switching of the hinge mechanism 30 during the rotation process, thereby adapting to the use requirements of the folding electronic device 100 under different folding angles.

With continued reference to fig. 5, in some embodiments, the first rotating assembly 35 includes a first rotating member 351 and a first connecting seat 352. One end of the first rotating member 351 is rotatably connected to the base 31, the other end is rotatably connected to the first connecting base 352, and the first connecting base 352 is slidably connected to the first swing arm 332. The second rotating assembly 36 includes a second rotating member 361 and a second connecting base 362, one end of the second rotating member 361 is rotatably connected to the base 31, the other end is rotatably connected to the second connecting base 362, and the second connecting base 362 is slidably connected to the second swing arm 342. In this way, during the rotation of the first rotating member 351 and the second rotating member 361 relative to the base 31, the first swing arm 332 and the second swing arm 342 rotate relative to the base 31 and slide relative to the first connecting seat 352 and the second connecting seat 362, so as to maintain the rotation coordination of the first rotating assembly 35 and the second rotating assembly 36 on the two sides of the base 31.

Referring to fig. 6 and 7, the rotating shaft mechanism 30 includes a first inclined plate 353 and a second inclined plate 363, the first inclined plate 353 and the second inclined plate 363 are respectively connected to the first rotating assembly 35 and the second rotating assembly 36, and when the first swing arm 332 and the second swing arm 342 rotate relative to the base 31, the first inclined plate 353 and the second inclined plate 363 respectively move relative to the base 31 under the driving of the first rotating assembly 35 and the second rotating assembly 36 to assume different states. For example, as shown in fig. 6, the first inclined plate 353 and the second inclined plate 363 are horizontally expanded, and as shown in fig. 7, the first inclined plate 353 and the second inclined plate 363 are disposed at an angle. In this way, the flexible screen 20 can be supported and pressed by the movement of the first inclined plate 353 and the second inclined plate 363. Specifically, when the foldable electronic device 100 is in the flat position, the first inclined plate 353 and the second inclined plate 363 are flat to support the flexible screen 20, so that the flexible screen 20 displays a flat picture. When the folding electronic device 100 is in the folding position, the first inclined plate 353 and the second inclined plate 363 form a certain included angle and are respectively located at two sides of the folding position of the flexible screen 20, and the part of the flexible screen 20 close to the rotating shaft mechanism 30 is in a drop shape under the extrusion of the first inclined plate 353 and the second inclined plate 363, so that the probability of creases appearing on the flexible screen 20 is reduced.

As shown in fig. 8 and 9, one of the first connecting seat 352 and the first sloping plate 353 is provided with a first arc groove 353a, and the other one of the first connecting seat 352 and the first sloping plate 353 is provided with a first engaging portion 352a slidably engaged with the first arc groove 353 a. It should be noted that, in the present application, the circular arc groove refers to a groove having a circular arc cross section. Thus, in this embodiment, the cross-sectional shape of the first engagement portion 352a is circular arc. When the first swing arm 332 rotates around the first axis Z1 relative to the base 31, the first matching portion 352a slides along the first arc groove 353a, the first connecting seat 352 slides relative to the first swing arm 332, and the first swing arm 332 drives the first inclined plate 353 to rotate around the center of the first matching portion 352a relative to the first connecting seat 352.

One of the second connecting seat 362 and the second inclined plate 363 is provided with a second arc groove 363a, and the other of the second connecting seat 362 and the second inclined plate 363 is provided with a second matching portion 362a in sliding fit with the second arc groove 363a, when the second swing arm 342 rotates around the second axis Z2 relative to the base 31, the second matching portion 362a slides along the second arc groove 363a, the second connecting seat 362 slides relative to the second swing arm 342, and the second swing arm 342 drives the second inclined plate 363 to rotate around the center of the second matching portion 362a relative to the second connecting seat 362.

As shown in fig. 8 to 10, the first swing arm 332 and the second swing arm 342 are respectively connected to a first guide rod 332a and a second guide rod 342a, the first inclined plate 353 and the second inclined plate 363 are respectively provided with a first guide portion 353b and a second guide portion 363b, the first guide portion 353b is provided with a third arc groove 353c, the second guide portion 363b is provided with a fourth arc groove 363c, and when the first swing arm 332 and the second swing arm 342 rotate relative to the base 31, the first guide rod 332a and the second guide rod 342a respectively slide along the third arc groove 353c and the fourth arc groove 363c, so that the first inclined plate 353 and the second inclined plate 363 respectively deflect relative to the first connection seat 352 and the second connection seat 362, so as to control the water droplet shape of the flexible screen 20 squeezed by the first inclined plate 353 and the second inclined plate 363 when the foldable electronic device 100 is at the folding position.

In some embodiments, when the first swing arm 332 and the second swing arm 342 move away from each other to the limit position, the included angle between the first inclined plate 353 and the second inclined plate 363 is 180 °, and within this range, the flexible screen 20 approaches a plane under the support of the first inclined plate 353 and the second inclined plate 363, so as to improve the smoothness of the display screen. Understandably, in consideration of engineering errors, a value range of an included angle formed by the first inclined plate 353 and the second inclined plate 363 may be 175 ° to 185 °, and in the value range, the included angle formed by the first inclined plate 353 and the second inclined plate 363 is close to a flat angle, and then the first inclined plate 353 and the second inclined plate 363 are coplanar with each other, so as to jointly support the flexible screen 20, so that the influence on the flatness of the display picture of the flexible screen 20 is not large, and the texture of the display picture of the flexible screen 20 can be maintained.

As shown in fig. 11, the base 31 has a first shaft 31a and a second shaft 31b parallel to each other, and the first rotating member 351 and the second rotating member 361 are rotatably connected to the first shaft 31a and the second shaft 31b, respectively, so that the first rotating member 351 and the second rotating member 361 can smoothly rotate relative to the base 31 and the first connecting seat 352 and the second connecting seat 362 can stably deflect relative to the base 31.

It should be noted that the rotation axis of the first shaft 31a is parallel to the first axis Z1, so that the first rotating member 351 and the first transmission member 33 rotate around different axes, and form a corresponding high rotating pair and a corresponding low rotating pair, thereby realizing a biaxial rotating pair. Accordingly, the rotational axis of the second shaft 31b is parallel to the second axis Z2, whereby the second rotating member 361 and the second transmission member 34 rotate about different axes, and respective high and low revolute pairs are formed, and a biaxial revolute pair is also realized.

As shown in fig. 11 to 13, the rotating shaft mechanism 30 further includes a cover plate 37, and the cover plate 37 has a first receiving groove 37a and a second receiving groove 37b. In this embodiment, at least a portion of the first rotating member 351 is accommodated in the first accommodating groove 37a, and at least a portion of the second rotating member 361 is accommodated in the second accommodating groove 37b, so that the assembly structure is compact, the rotating mechanism is small, and the miniaturization of the folding electronic device 100 is facilitated. In this embodiment, the cover 37 is connected to the base 31 for rotatably limiting the first rotating member 351 and the second rotating member 361 to the first shaft 31a and the second shaft 31b, so that the structure of the rotating shaft mechanism 30 is stable to maintain good rotating performance.

As shown in fig. 13, the first receiving groove 37a and the second receiving groove 37b may be arc grooves, where the arc grooves are arc surfaces surrounding the grooves, and the cross-sectional profile of the grooves may be considered as an arc. Understandably, after the cover plate 37 and the base 31 are connected, the first transmission piece 33 and the second transmission piece 34 can smoothly rotate between the cover plate 37 and the base 31.

In some embodiments, the first shaft 31a and the second shaft 31b have fan-shaped cross sections, the first rotating member 351 is clamped between the first shaft 31a and the cover plate 37, and the second rotating member 361 is clamped between the second shaft 31b and the cover plate 37, so that the volume of the structure can be reduced as much as possible, and the supporting surface provided by the non-cylindrical shaft is flat, and the flexible screen 20 is supported well. It should be noted that the cross section of the first shaft 31a and the second shaft 31b may be semicircular.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A spindle mechanism, comprising:

a base;

the first transmission piece comprises a first rotating part and a first swing arm which are connected with each other, the first rotating part is rotatably connected with the base, and the first rotating part is provided with a first spiral groove matched with the first bulge; and

the second transmission part comprises a second rotating part and a second swing arm which are connected with each other, the second rotating part is rotatably connected with the base, and the second rotating part is provided with a second spiral groove matched with the second bulge;

when the first swing arm rotates around a first axis relative to the base, the first protrusion slides along the first spiral groove, the sliding block slides along the extending direction of the central axis relative to the base, and the second protrusion slides along the second spiral groove, so that the second swing arm rotates around a second axis relative to the base, wherein the rotating direction of the second swing arm is opposite to the rotating direction of the first swing arm.

2. The spindle mechanism according to claim 1, wherein the first axis and the second axis are parallel and symmetrical about the central axis.

3. The spindle mechanism according to claim 1, wherein the second helical groove has a direction opposite to the direction of the first helical groove, and a pitch of the second helical groove is the same as a pitch of the first helical groove.

4. The hinge mechanism as claimed in claim 1, further comprising a driving member, wherein the driving member is configured to drive the sliding block to slide relative to the base, and the sliding block drives the first rotating portion and the second rotating portion to rotate in opposite directions by an equal angle relative to the base via the first protrusion and the second protrusion.

5. The spindle mechanism according to claim 1, further comprising a detection assembly disposed between the slider and the base for detecting a position of the slider relative to the base.

6. The hinge mechanism of claim 1, further comprising a first rotating assembly and a second rotating assembly disposed on two sides of the base, wherein the first rotating assembly is in linkage connection with the first swing arm, and the second rotating assembly is in linkage connection with the second swing arm.

7. The spindle mechanism according to claim 6, wherein the first rotating assembly comprises a first rotating member and a first connecting base, one end of the first rotating member is rotatably connected to the base, and the other end of the first rotating member is rotatably connected to the first connecting base; the first connecting seat is connected with the first swing arm in a sliding manner;

the second rotating assembly comprises a second rotating piece and a second connecting seat, one end of the second rotating piece is rotatably connected with the base, and the other end of the second rotating piece is rotatably connected with the second connecting seat; the second connecting seat is connected to the second swing arm in a sliding mode.

8. The rotating shaft mechanism according to claim 7, further comprising a first inclined plate, wherein one of the first connecting seat and the first inclined plate is provided with a first arc groove, and the other of the first connecting seat and the first inclined plate is provided with a first engaging portion slidably engaged with the first arc groove, when the first swing arm rotates around a first axis relative to the base, the first engaging portion slides along the first arc groove, the first connecting seat slides relative to the first swing arm, and the first swing arm drives the first inclined plate to rotate around a center of the first engaging portion relative to the first connecting seat;

the rotating shaft mechanism further comprises a second inclined plate, one of the second connecting seat and the second inclined plate is provided with a second arc groove, the other of the second connecting seat and the second inclined plate is provided with a second matching portion in sliding fit with the second arc groove, when the second swing arm is opposite, the base rotates around a second axis, the second matching portion is arranged along the second arc groove to slide, the second connecting seat is opposite, the second swing arm slides, and the second swing arm drives the second inclined plate to rotate around the circle center of the second matching portion.

9. The rotating shaft mechanism according to claim 8, wherein the first swing arm and the second swing arm are respectively connected with a first guide rod and a second guide rod, the first inclined plate and the second inclined plate are respectively provided with a first guide portion and a second guide portion, the first guide portion is provided with a third arc groove, the second guide portion is provided with a fourth arc groove, and when the first swing arm and the second swing arm rotate relative to the base, the first guide rod and the second guide rod respectively slide along the third arc groove and the fourth arc groove.

10. The rotating shaft mechanism according to claim 8 or 9, wherein when the first swing arm and the second swing arm move away from each other to an extreme position, an included angle formed by the first swash plate and the second swash plate ranges from 175 ° to 185 °.

11. The spindle mechanism according to claim 8 or 9, wherein the base has a first shaft and a second shaft parallel to each other, and the first rotating member and the second rotating member are rotatably connected to the first shaft and the second shaft, respectively.

12. The spindle mechanism according to claim 11, wherein a first rotational axis between the first rotating member and the first shaft is parallel to the first axis, and a second rotational axis between the second rotating member and the second shaft is parallel to the second axis.

13. The spindle mechanism according to claim 11, further comprising a cover plate having a first receiving slot and a second receiving slot, wherein at least a portion of the first rotating member is received in the first receiving slot, and at least a portion of the second rotating member is received in the second receiving slot, the cover plate being coupled to the base for rotatably limiting the first rotating member and the second rotating member to the first shaft and the second shaft.

14. The spindle mechanism according to claim 13, wherein the first shaft and the second shaft are fan-shaped in cross section, the first rotating member is sandwiched between the first shaft and the cover plate, and the second rotating member is sandwiched between the second shaft and the cover plate.

15. A foldable electronic device, comprising: comprising a housing assembly including a first housing and a second housing, the first housing being connected to the first transmission member, the second housing being connected to the second transmission member, a flexible screen being connected between the first housing and the second housing and covering the spindle mechanism, and a spindle mechanism according to any of claims 1 to 14.