CN118018636A

CN118018636A - Electronic equipment

Info

Publication number: CN118018636A
Application number: CN202211403572.5A
Authority: CN
Inventors: 陈永亮; 王康; 唐安特
Original assignee: Hangzhou Douku Software Technology Co Ltd
Current assignee: Hangzhou Douku Software Technology Co Ltd
Priority date: 2022-11-10
Filing date: 2022-11-10
Publication date: 2024-05-10

Abstract

The application relates to electronic equipment, which comprises a shell component, a flexible screen and a tensioning mechanism, wherein the shell component comprises a first shell and a second shell, the tensioning mechanism comprises a connecting seat, a sliding rail, a tensioning wheel and a tensioning belt, the connecting seat is fixed with the first shell, the sliding rail is fixed on the second shell along a first direction, the sliding rail is in sliding connection with the connecting seat, a support is arranged at the end part of the sliding rail, the tensioning wheel is in rotating connection with the support, the tensioning belt is wound on the tensioning wheel, and when the first shell and the second shell relatively move along the first direction, the connecting seat slides along the sliding rail and the flexible screen is tensioned through the tensioning belt. According to the electronic equipment, the tensioning of the flexible screen is coordinated with the telescopic movement of the shell assembly, the probability that the flexible screen is pulled or wrinkled is reduced, the service life of the flexible screen is effectively prolonged, and the tensioning wheel is rotatably arranged at the end part of the sliding rail through the support, so that the space utilization rate of the electronic equipment is improved due to the fact that the tensioning belt is compact between the tensioning wheel and the sliding rail.

Description

Electronic equipment

Technical Field

The application relates to the technical field of electronic equipment, in particular to electronic equipment.

Background

With the market demand for electronic devices such as mobile phones and tablet computers to realize adjustable display areas, display screens of the electronic devices are developed from original hard screens to flexible screens, and electronic device structures such as folding screens or scroll screens are formed from small screens to large screens.

In the related art, the flexible screen is tensioned by adopting the tensioning structure, so that the internal space of the electronic equipment is occupied, the space utilization rate of the electronic equipment is low, the flexible screen and the shell component are difficult to coordinate in telescopic movement, the flexible screen is easily pulled or wrinkled, and the service life of the flexible screen is short.

Disclosure of Invention

The application provides electronic equipment, which aims to solve the technical problems of improving the space utilization rate of the electronic equipment and prolonging the service life of a flexible screen of the electronic equipment.

An embodiment of the present application provides an electronic device, including:

a housing assembly including a first housing and a second housing;

The flexible screen comprises a fixed part and a free part which are connected, the fixed part is fixed with the first shell, and the free part movably bypasses one end, far away from the fixed part, of the second shell; and

The tensioning mechanism comprises a connecting seat, a sliding rail, a tensioning wheel and a tensioning belt, wherein the connecting seat is fixed with the first shell, the sliding rail is fixed with the second shell along a first direction, the sliding rail is in sliding connection with the connecting seat, a support is arranged at the end of the sliding rail, the tensioning wheel is in rotary connection with the support, the tensioning belt is wound on the tensioning wheel, one end of the tensioning belt is fixed with the connecting seat, the other end of the tensioning belt is fixed with one end of a free part of the flexible screen, which is far away from the fixed part, and when the first shell and the second shell move relatively along the first direction, the connecting seat slides along the sliding rail and is tensioned by the tensioning belt.

The electronic equipment comprises the connecting seat, the sliding rail, the tensioning wheel and the tensioning belt, wherein the connecting seat and the sliding rail are connected in a sliding mode to enable the first shell and the second shell to stably slide, when the first shell and the second shell relatively move along the first direction, the connecting seat slides along the sliding rail, and the flexible screen is tensioned through the tensioning belt, so that tensioning of the flexible screen is coordinated with telescopic movement of the shell assembly, the probability that the flexible screen is pulled or wrinkled is reduced, the service life of the flexible screen is effectively prolonged, and the tensioning wheel is rotatably arranged at the end portion of the sliding rail through the support, so that the space between the tensioning belt and the sliding rail is compact, and the space utilization rate of the electronic equipment is improved.

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of an electronic device according to an embodiment, in which a second housing is in a folded position;

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

FIG. 3 is a schematic diagram of another structure of an electronic device according to an embodiment;

FIG. 4 is a schematic front view of the electronic device shown in FIG. 3;

FIG. 5 is a schematic cross-sectional view of the electronic device shown in FIG. 4 along line I-I;

Fig. 6 is a schematic cross-sectional structure of another state of the electronic device shown in fig. 5;

FIG. 7 is a schematic structural diagram of a tensioning mechanism of an electronic device according to an embodiment;

FIG. 8 is a schematic side view of a tensioning mechanism of an electronic device according to an embodiment;

FIG. 9 is a schematic diagram of a tensioning mechanism of an electronic device according to an embodiment with a tensioning strap removed;

FIG. 10 is a schematic view of an embodiment of a drive mechanism for an electronic device installed in a housing assembly;

fig. 11 is a schematic perspective view of a driving mechanism of an electronic device according to an embodiment;

Fig. 12 is a schematic cross-sectional structure of the driving mechanism of the electronic device shown in fig. 11 in the case assembly;

fig. 13 is a schematic structural view of the driving mechanism of the electronic device shown in fig. 11 from another perspective;

FIG. 14 is a schematic view of a part of a driving mechanism of an electronic device according to an embodiment;

fig. 15 is a schematic block diagram of a circuit of an electronic device according to an embodiment.

Reference numerals illustrate:

100. An electronic device; 10. a housing assembly; 10a, a receiving cavity; 20. a flexible screen; 22. a fixing part; 24. a free portion; 12. a first housing; 14. a second housing; 14a, an empty-avoiding groove; 14b, roll shafts; A. a first limit part; B. a second limit part; 20a, displaying an interface; 20b, connecting plates; 30. a tensioning mechanism; 31. a connecting seat; 32. a slide rail; 33. a tensioning wheel; 33a, wheel grooves; 33b, sidewalls; 34. tensioning the belt; 35a, mounting grooves; 35b, a rotating shaft; 351. a connecting arm; 352. a first support arm; 353. a second support arm; 30a, a first magnet; 30b, a first electromagnet; 30c, a distance sensor; 40. a driving mechanism; 41. a motor; 41a, an output shaft; 411. a first gear; 412. a second gear; 42. a first rack; 43. a second rack; 43a, a connection part; 44. a fixing seat; 44a, a first clamping position; 44b, second clamping positions; 45. and (3) a bearing.

Detailed Description

In order that the application may be readily understood, a more complete description of the application will be rendered by reference to the appended 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, "electronic device" refers to a device capable of receiving and/or transmitting communication signals that includes, but is not limited to, a device connected via any one or several of the following connections:

(1) Via a wireline connection, such as via a public-switched telephone network (Public Switched Telephone Networks, PSTN), a digital subscriber line (Digital Subscriber Line, DSL), a digital cable, a direct cable connection;

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

An electronic device arranged to communicate over a wireless interface may be referred to as a "mobile terminal". Examples of mobile terminals include, but are not limited to, the following electronic devices:

(1) Satellite phones or cellular phones;

(2) A personal communications system (Personal Communications System, PCS) terminal that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities;

(3) A radio telephone, pager, internet/intranet access, web browser, notepad, calendar, personal digital assistant (Personal DIGITAL ASSISTANT, PDA) equipped with a global positioning system (Global Positioning System, GPS) receiver;

(4) Conventional laptop and/or palmtop receivers;

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

Referring to fig. 1 to 5, an electronic device 100 according to an embodiment of the present application includes a case assembly 10 and a flexible screen 20.

The housing assembly 10 forms a receiving cavity 10a, and the electronic device 100 may further include a circuit board (not shown) that may be disposed within the receiving cavity 10a of the housing assembly 10. The circuit board may integrate the processor, power management module, memory unit, baseband chip, etc. of the electronic device 100. In some embodiments, the electronic device 100 may further include a camera module (not shown) communicatively coupled to the circuit board, the second battery being capable of powering the camera module. It is understood that the electronic device 100 according to the embodiment of the present application includes, but is not limited to, a terminal device such as a mobile phone, a tablet computer, or other portable electronic devices 100.

The housing assembly 10 includes a first housing 12 and a second housing 14, the first housing 12 and the second housing 14 being relatively movable in a first direction. The flexible screen 20 includes a fixed portion 22 and a free portion 24 connected, the fixed portion 22 being fixed to the first housing 12, the free portion 24 being movable around an end of the second housing 14 remote from the fixed portion 22, such that the flexible screen 20 is gradually unfolded as the first housing 12 and the second housing 14 are relatively moved in a first direction in a direction away from each other.

For ease of description, the two extreme positions of the first housing 12 sliding in the first direction relative to the second housing 14 are referred to as a "collapsed position" and an "extended position", respectively, wherein in the collapsed position the electronic device 100 is already at a minimum size in the first direction and the housing assembly 10 cannot continue to collapse in the first direction; in the deployed position, the electronic device 100 is already at its maximum size in the first direction, and the housing assembly 10 cannot continue to extend in the first direction. As shown in fig. 1, the electronic device 100 has a relatively small external dimension when the first housing 12 is in the folded position, and is convenient to carry. As shown in fig. 2, when the first housing 12 is in the unfolded position, the electronic device 100 can obtain a relatively large display area, so as to obtain a visual experience of a large screen display, so as to improve the use experience of the electronic device 100. Thus, with this arrangement, the area of the display screen of the flexible screen 20 (hereinafter referred to as the display interface 20 a) can be adjusted by relative sliding expansion and contraction of the first housing 12 and the second housing 14.

It should be noted that, as a structural member of the electronic device 100 for displaying or touching, the flexible screen 20 has a display area, where the display area corresponds to an area of the flexible screen 20 corresponding to a maximum display screen, or when the first housing 12 and the second housing 14 are in the extended position during the sliding and stretching process, that is, when the display interface 20a is at a maximum, the display interface 20a is the same as the display area. Since the first casing 12 and the second casing 14 are housed inside without being exposed during sliding expansion and contraction of the first casing 12 and the second casing 14 with respect to each other, the display area of the flexible screen 20 is not displayed. The display interface 20a refers to a portion of the display area exposed to the first housing 12 and the second housing 14. When the display interface 20a is turned on or the screen is displayed, the content displayed on the display interface 20a can be observed by the outside of the electronic device 100.

It is to be understood that in the following embodiments of the present application, the retracted position, the extended position, and the like refer to the relative positions of the first housing 12 and the second housing 14. For simplicity, the similar expressions "the first housing 12 is in the folded position" or "in the folded position" refer to the first housing 12 being in the folded position relative to the second housing 14, and the similar expressions "the first housing 12 is in the unfolded position" or "in the unfolded position" refer to the first housing 12 being in the unfolded position relative to the second housing 14.

As shown in fig. 3 and 10, the end, far away from the fixed portion 22, of the second housing 14 is provided with a roller 14b, and the free portion 24 is tensioned on the roller 14b, so that when the free portion 24 of the flexible screen 20 moves relative to the second housing 14, the roller 14b has a good guiding effect, and friction between the flexible screen 20 and the second housing 14 is reduced, so as to improve smoothness of telescopic movement of the flexible screen 20. It should be noted that, the roller shaft 14b is rotatably disposed on the second housing 14, and the second housing 14 is provided with a slot for installing the roller shaft 14b, so that the cylindrical surface of the roller shaft 14b and the position of the second housing 14 for abutting against the free portion 24 remain smooth, so as to be beneficial to guiding the flexible screen 20 to move smoothly.

Further, the second housing 14 is provided with a plurality of roller shafts 14b, and the plurality of roller shafts 14b are coaxially disposed along a second direction, which is perpendicular to the first direction, and which is perpendicular to the thickness direction of the electronic device 100. In this embodiment, the plurality of roller shafts 14b are used to support different positions of the flexible screen 20 in the second direction, so that the flexible screen 20 can be smoothly spread out from the case assembly 10 or taken into the case assembly 10 under the guidance of the roller shafts 14 b.

As shown in connection with fig. 3 and 4, in some embodiments, the electronic device 100 further includes a tensioning mechanism 30, and the flexible screen 20 is tensioned by the tensioning mechanism 30, so that the flexible screen 20 is always under tension by the tensioning mechanism 30 when the first housing 12 and the second housing 14 extend and retract along the first direction.

Specifically, as shown in conjunction with fig. 5 and 6, the tensioning mechanism 30 includes a connecting seat 31, a slide rail 32, a tensioning wheel 33, and a tensioning belt 34.

The connecting seat 31 is fixed to the first housing 12, and the slide rail 32 is fixed to the second housing 14 along the first direction, that is, the length direction of the slide rail 32 fixed to the second housing 14 coincides with the first direction. The slide rail 32 is slidably connected with the connection seat 31, thereby realizing the sliding connection of the first housing 12 and the second housing 14, so that the first housing 12 and the second housing 14 can move telescopically in a first direction with each other.

The end of the sliding rail 32 is provided with a bracket 35, the tensioning wheel 33 is rotatably connected with the bracket 35, the tensioning belt 34 is wound around the tensioning wheel 33, one end of the tensioning belt 34 is fixed with the connecting seat 31, the other end of the tensioning belt 34 is fixed with one end of the free portion 24 of the flexible screen 20, which is far away from the fixed portion 22, and when the first shell 12 and the second shell 14 move relatively along the first direction, the connecting seat 31 slides along the sliding rail 32 and the flexible screen 20 is tensioned through the tensioning belt 34.

In the above embodiment, the sliding connection between the connecting seat 31 and the sliding rail 32 is utilized to enable the first housing 12 and the second housing 14 to stably slide, because the connecting seat 31 slides along the sliding rail 32 and the flexible screen 20 is tensioned by the tensioning belt 34 when the first housing 12 and the second housing 14 relatively move along the first direction, the tensioning of the flexible screen 20 is coordinated with the telescopic movement of the housing assembly 10, the probability that the flexible screen 20 is pulled or wrinkled is reduced, the service life of the flexible screen 20 is effectively prolonged, and the tensioning wheel 33 is rotatably arranged at the end part of the sliding rail 32 through the bracket 35, so that the space utilization rate of the electronic device 100 is improved due to the compactness between the tensioning belt 34 and the sliding rail 32.

In some embodiments, as shown in connection with fig. 7, the bracket 35 includes a connection arm 351, a first support arm 352, and a second support arm 353.

The connecting arm 351 is connected to an end of the slide rail 32, and the connecting arm 351 and the end of the slide rail 32 may be integrally formed or may be connected by a connecting member such as a screw or a pin.

The first support arm 352 and the second support arm 353 are spaced apart from each other and are each connected to the connection arm 351. The spacing between the first support arm 352 and the second support arm 353 provides a mounting space for the tension pulley 33, and in particular, the tension pulley 33 is rotatably disposed between the first support arm 352 and the second support arm 353.

In this embodiment, the tensioning wheel 33 is movable relative to the slide rail 32 in a first direction to adjust the amount of tensioning force applied to the tensioning belt 34 (i.e., the degree of tensioning of the tensioning belt 34), and as will be appreciated, the greater the tensioning force applied by the tensioning wheel 33 to the tensioning belt 34, the tighter the tensioning belt 34 will be; accordingly, the smaller the tension applied by the tensioner 33 to the tension belt 34, the more loose the tension belt 34 is. The tensioning wheel 33 is wound around the tensioning belt 34, so that when the tensioning wheel 33 moves in the first direction relative to the sliding rail 32, the tensioning wheel 33 can apply tensioning forces of different magnitudes to the tensioning belt 34, i.e. an effect of adjusting the tensioning degree of the tensioning belt 34 is achieved. Thus, by adjusting the tension of the tension band 34, the flexible screen 20 can be controlled to a proper tension to avoid tearing the flexible screen 20 due to excessive tension and to avoid slackening the flexible screen 20 due to insufficient tension.

It should be noted that there are various embodiments in which the tension pulley 33 moves in the first direction relative to the slide rail 32 to adjust the tension of the tension belt 34. Specifically, based on the support 35 being connected to the slide rail 32, in some embodiments, the tensioning wheel 33 may be movably disposed on the support 35, such that the tensioning wheel 33 can move along a first direction relative to the support 35, so as to enable the tensioning wheel 33 to move along the first direction relative to the slide rail 32. In some embodiments, the support 35 may be movably disposed on the sliding rail 32, such that the support 35 can move along a first direction relative to the sliding rail 32, and thus, the tensioning wheel 33 can move along the first direction along with the support 35 relative to the sliding rail 32.

The principle by which the electronic device 100 adjusts the tension of the tension band 34 is further described below in connection with an embodiment in which the tension pulley 33 moves in a first direction relative to the slide rail 32 for ease of understanding.

As shown in connection with fig. 7-9, in some embodiments, each of the first support arm 352 and the second support arm 353 is provided with a mounting slot 35a, and the mounting slot 35a may be a blind slot that does not extend through the corresponding support arm, or may be a through slot that extends through the corresponding support arm.

The mounting groove 35a is used for mounting a rotating shaft 35b, the rotating shaft 35b can move in the mounting groove 35a along a first direction, the tensioning wheel 33 is connected with the rotating shaft 35b, one of the tensioning wheel 33 and the connecting arm 351 is provided with a first magnet 30a, the other of the tensioning wheel 33 and the connecting arm 351 is provided with a first electromagnet 30b, and the electronic device 100 comprises a controller which is electrically connected with the first electromagnet 30b and is used for controlling the magnitude of the energizing current of the first electromagnet 30 b. The first electromagnet 30b is capable of repelling the first magnet 30a when energized, such that the tensioning wheel 33 moves in a first direction relative to the slide rail 32.

As shown in fig. 9, at least one of the tension pulley 33 and the connection arm 351 is provided with a distance sensor 30c. The distance sensor 30c is electrically connected to the controller, the distance sensor 30c is configured to detect a relative distance between the tensioning wheel 33 and the connection arm 351, and output a first feedback signal to the controller, and the controller is configured to control the magnitude of the energizing current of the first electromagnet 30b according to the first feedback signal. Since the relative distance between the tension pulley 33 and the connection arm 351 is different, the tension pulley 33 applies a different tension to the tension belt 34, and specifically, the larger the relative distance between the tension pulley 33 and the connection arm 351, the larger the tension applied to the tension belt 34, without changing other factors. Since in this embodiment, the controller may control the magnitude of the energizing current of the first electromagnet 30b according to the first feedback signal fed back by the distance sensor 30c, so that the first electromagnet 30b generates a suitable repulsive force with the first magnet 30a under the action of the corresponding energizing current, and then the tensioning wheel 33 is controlled to be in a suitable position relative to the connecting arm 351, so that the tensioning belt 34 maintains a suitable tensioning force to tension the flexible screen 20. Thus, even if the amount of expansion and contraction of the flexible screen 20 is not in agreement with the ideal case due to the influence of the mechanism accuracy during the relative sliding of the first housing 12 and the second housing 14, the controller can ensure that the tension of the flexible screen 20 is always maintained at the ideal level (i.e., the preset tension level) by controlling the energizing current of the first electromagnet 30b to achieve the feedback adjustment of the tension band 34.

In some embodiments, the tension pulley 33 is provided with a pressure sensor electrically connected with the controller, the pressure sensor is used for detecting the tension force of the tension pulley 33 on the tension belt 34 and outputting a second feedback signal to the controller, and the controller is used for controlling the magnitude of the energizing current of the first electromagnet 30b according to the second feedback signal, so that the tension pulley 33 applies a proper tension force on the tension belt 34, and accordingly the tension force applied to the flexible screen 20 is ensured to meet the expectations, and the flexible screen 20 is prevented from being torn due to the excessive tension force or loose due to the insufficient tension force.

In some embodiments, the number of tensioning mechanisms 30 may be 2 or more. For example, the electronic device 100 includes at least 2 tensioning mechanisms 30 spaced apart along a second direction to tension different positions of the flexible screen 20, respectively, the second direction being perpendicular to the first direction. When the difference between the tension applied to the flexible screen 20 by the tension bands 34 connected to the different positions of the flexible screen 20 exceeds a preset range, the controller adjusts the energizing current of each first electromagnet 30b so that the difference between the tension applied to the flexible screen 20 by the tension bands 34 connected to the different positions of the flexible screen 20 is in the preset range, thus, the tension at the different positions of the flexible screen 20 is consistent, the stress of the flexible screen 20 is uniform, wrinkles are not easy to occur, and meanwhile, the inclination of the flexible screen 20 caused by the inconsistent local tension is avoided. Understandably, tilting of the flexible screen 20 results in increased resistance during the telescoping motion, thereby creating a jamming phenomenon. Therefore, by adjusting the tension of the tension bands 34 at different positions of the flexible screen 20, the more uniform the tension applied to different positions of the flexible screen 20, the more advantageous the smoothness of the expansion and contraction of the flexible screen 20 can be maintained.

In some embodiments, the end of the sliding rail 32 is provided with a slot, the connection arm 351 is provided with a plug-in portion, the plug-in portion is movably plugged into the slot along the first direction, a magnetic control assembly is arranged between the connection arm 351 and the end of the sliding rail 32, and the magnetic control assembly is used for driving the connection arm 351 to move towards the end far away from the sliding rail 32, so that the tensioning wheel 33 is used for tensioning the tensioning belt 34. In this embodiment, the magnetic control assembly is used to drive the connecting arm 351 to move towards the end far away from the sliding rail 32, so that the bracket 35 drives the tensioning wheel 33 to tension the tensioning belt 34. Based on the fact that the tension applied to the tension belt 34 by the tension pulley 33 is different when the driving force of the magnetic control assembly to the bracket 35 is different, the flexible screen 20 can be maintained at an appropriate degree of tension.

Further, the magnetic control assembly comprises a second electromagnet and a second magnet which are correspondingly arranged, one of the second electromagnet and the second magnet is arranged on the connecting arm 351, and the other of the second electromagnet and the second magnet is arranged at the end part of the sliding rail 32; the electronic device 100 includes a controller electrically connected to the second electromagnet and configured to control the magnitude of the energizing current of the second electromagnet. In this embodiment, the second electromagnet is capable of repelling the second magnet when energized, so that the bracket 35 drives the tensioning wheel 33 to move along the first direction relative to the sliding rail 32. In this way, the tension band 34 changes the tension on the flexible screen 20 so that the flexible screen 20 is maintained at the proper tension.

In some embodiments, the tensioning wheel 33 has a wheel groove 33a, and the tensioning belt 34 is wound around a position corresponding to the wheel groove 33a to prevent the tensioning belt 34 from slipping off the tensioning wheel 33 by using the wheel groove 33 a. Further, with this structural arrangement, when the tension belt 34 is wound around the wheel groove 33a, the two side walls 33b of the wheel groove 33a protrude from the tension belt 34, so that the tension belt 34 is protected by the side walls 33b of the wheel groove 33a, and abrasion of the tension belt 34 and the first housing 12 is prevented. Specifically, since the both side walls 33b of the wheel groove 33a protrude the tension band 34, even if the first housing 12 and the second housing 14 are relatively moved in the first direction, the first housing 12 and the second housing 14 are displaced in a deflection in a direction perpendicular to the thickness direction of the flexible screen 20 (i.e., the thickness direction of the electronic device 100), the both side arms of the wheel groove 33a are more likely to contact the first housing 12 than the tension band 34 located in the wheel groove 33a, so that the contact between the side walls 33b of the wheel groove 33a and the first housing 12 in the direction perpendicular to the thickness direction of the flexible screen 20 achieves the effect of the abutment limit, thereby preventing the tension band 34 located in the wheel groove 33a from contacting the first housing 12, and consequently preventing the tension band 34 from being worn by the first housing 12, and improving the service life of the tension band 34. It should be noted that, since the tensioning wheel 33 can rotate relative to the bracket 35, even if the side wall 33b of the wheel groove 33a contacts the first housing 12, the contact friction between the tensioning wheel 33 and the first housing 12 is rolling friction, and the rolling friction has little influence on the smoothness of movement and the abrasion of the structure of the mechanism, which can be ignored, so that the whole service life of the tensioning mechanism 30 is advantageously prolonged under the technical scheme that the side wall 33b of the wheel groove 33a provides protection for the tensioning wheel 33.

In some embodiments, the thickness of the tension band 34 is 0.1mm to 0.2mm, such as the thickness of the tension band 34 is 0.1mm, 0.12mm, 0.13mm, 0.15mm, 0.17mm, 0.18mm, 0.91mm, or 0.2mm. The depth of the wheel groove 33a should be greater than the thickness of the tension belt 34 based on the fact that both side walls 33b of the wheel groove 33a protrude from the tension belt 34. For example, the depth of the wheel groove 33a is 0.21mm to 0.35mm, and the depth of the wheel groove 33a may be specifically 0.21mm, 0.22mm, 0.23mm, 0.25mm, 0.27mm, 0.28mm, 0.3mm, 0.31mm, 0.32mm, 0.33mm, 0.34mm, or 0.35mm.

In some embodiments, it is defined that the area of the first housing 12 opposite to the tension pulley 33 when the first housing 12 and the second housing 14 are moved away from each other in the first direction to the extreme position, i.e., when the electronic device 100 is in the unfolded state, is an area a, in other words, when the tension pulley 33 is located in the area a in the orthographic projection of the first housing 12 in the thickness direction of the electronic device 100. In this embodiment, when the electronic device 100 is in the unfolded state, the distance between the tension band 34 and the a region of the first housing 12 is greater than or equal to 0.25mm, that is, a gap of at least 0.25mm exists between the tension band 34 and the a region of the first housing 12, so as to avoid contact friction therebetween. In some embodiments, the sidewall 33b of the wheel well 33a is greater than or equal to 0.1mm from the a-region of the first housing 12 when the electronic device 100 is in the deployed state.

In some embodiments, the inner diameter of the circular arc corresponding to the position of the tension pulley 33 around which the tension belt 34 is wound (i.e., the bending diameter under the influence of the thickness of the tension belt 34 is ignored) is larger than the thickness of the slide rail 32 (i.e., the dimension of the slide rail 32 in the thickness direction of the electronic device 100), which is beneficial to maintaining a clearance between the tension belt 34 and the slide rail 32 so as to avoid contact friction between the tension belt 34 and the slide rail 32.

It should be noted that, the end of the tension belt 34 connected with the connection seat 31 may be provided with a connection piece, the connection piece and the connection seat 31 may be integrally formed, and the connection piece may also be connected with the connection seat 31 by adopting a connection manner such as a screw or a buckle. The connection mode of the tensioning belt 34 and the connection seat 31 is not described herein, so long as the connection seat 31 slides along the sliding rail 32, the tensioning belt 34 wound around the tensioning wheel 33 can be pulled, and the flexible screen 20 can keep consistent with the telescopic movement of the shell assembly 10 under the tensioning force of the tensioning belt 34, so that the probability that the flexible screen 20 is pulled or wrinkled is reduced, and the service life of the flexible screen 20 is prolonged.

As shown in connection with fig. 10, the electronic device 100 includes a drive mechanism 40 disposed within the housing assembly 10. The driving mechanism 40 is used for driving the first housing 12 and the second housing 14 to relatively move along the first direction, so that the electronic device 100 extends or contracts, and an effect of adjusting the display area of the flexible screen 20 is achieved.

As shown in fig. 11 to 13, the driving mechanism 40 includes a motor 41, a first rack 42, and a second rack 43. The motor 41 may be configured with a reduction mechanism to achieve a high torque output, including but not limited to a planetary reduction gear or a resonant reduction gear.

The motor 41 is fixed in the first shell 12, the output shaft 41a of the motor 41 is connected with a first gear 411 and a second gear 412, the first gear 411 is meshed with the first rack 42, the second gear 412 is meshed with the second rack 43, and then the first rack 42 and the second rack 43 are both connected with the output shaft 41a of the motor 41 in a linkage way, specifically, when the output shaft 41a of the motor 41 rotates, the first rack 42 and the second rack 43 are respectively driven to move simultaneously through the first gear 411 and the second gear 412. It should be noted that, the transmission mode of the gear engaged with the rack is adopted, which is beneficial to improving the transmission efficiency of the driving mechanism 40. Through verification, the transmission mode adopted by the embodiment of the application has the transmission efficiency reaching 90 percent. Therefore, the power utilization rate of the electronic device 100 can be sufficiently improved, and the cruising performance of the electronic device 100 can be enhanced by such arrangement with the battery capacity unchanged.

The first rack 42 is fixed to the second housing 14, and the second rack 43 is fixed to an end of the free portion 24 remote from the fixed portion 22. In this way, the motor 41 can drive the second housing 14 and the flexible screen 20 to move through the first rack 42 and the second rack 43 respectively, and then the free portion 24 of the flexible screen 20 will be unfolded from the housing assembly 10 or folded into the housing assembly 10 along with the relative movement of the first housing 12 and the second housing 14 in the first direction, so as to achieve the purpose of adjusting the unfolded length of the flexible screen 20. In this embodiment, when the output shaft 41a of the motor 41 rotates, the first rack 42 and the second rack 43 are both moved in the first direction by the motor 41, and the a movement speed of the second rack 43 is twice the movement speed of the first rack 42.

It should be noted that, the first rack 42 and the second rack 43 are driven by the motor 41 to move along the first direction, so that the second housing 14 and the flexible screen 20 are driven by the first rack 42 and the second rack 43 to move respectively, based on the free portion 24 of the flexible screen 20 being movably wound around one end of the second housing 14 far away from the fixed portion 22, the flexible screen 20 and the second housing 14 can move relative to the first housing 12 like a movable pulley, and then in the electronic device 100 of the present application, the moving speed of the first rack 42 and the second rack 43 driven by the same motor 41 is configured as 1:2 such that the telescoping movement of the flexible screen 20 is always coordinated with the extending movement of the second housing 14 relative to the first housing 12. For example, in some embodiments, the second housing 14 is moved 36mm in the first direction under the drive of the first rack 42, and the free portion 24 of the flexible screen 20 is moved 72mm in the first direction under the drive of the second rack 43, so that the free portion 24 wrapped around the second housing 14 is moved 36mm on each of the two sides of the second housing 14, so as to be consistent with the second housing 14, thereby avoiding tearing due to excessive tension of the flexible screen 20 and avoiding the problem that the housing assembly 10 cannot be supported well due to untimely shrinkage.

As shown in fig. 13 and 14, the first housing 12 is provided with a fixing seat 44, the fixing seat 44 has a first clamping position 44a and a second clamping position 44b, the first rack 42 is slidably connected to the first clamping position 44a along a first direction, and the second rack 43 is slidably connected to the second clamping position 44b along the first direction. In this embodiment, the first locking portion 44a limits the first rack 42, so that the first rack 42 moves stably in the first direction, and is not easy to shake. Accordingly, the second clamping position 44b limits the second rack 43, so that the second rack 43 moves stably in the first direction, and shaking is not easy to occur. The number of the first clamping positions 44a and the second clamping positions 44b may be 2, and the 2 first clamping positions 44a are respectively and correspondingly arranged at two sides of the first gear 411, so that a good guiding effect is provided in the moving direction of the first rack 42, and the moving stability of the first rack 42 along the first direction is improved. Correspondingly, the 2 second clamping positions 44b are respectively and correspondingly arranged at two sides of the second gear 412, so that a good guiding effect is provided in the moving direction of the second rack 43, and the moving stability of the second rack 43 along the first direction is improved.

The first and second locking portions 44a and 44b may be protrusions or recesses, so long as the first and second racks 42 and 43 have corresponding engaging portions thereon to slidably engage the first and second locking portions 44a and 44b, respectively. Specifically, when the first detent 44a and the second detent 44b are protrusions, the engaging portions of the first rack 42 and the second rack 43, which are correspondingly disposed, are grooves that are matched with the protrusions. When the first clamping position 44a and the second clamping position 44b are grooves, the corresponding engaging portions on the first rack 42 and the second rack 43 are protrusions matched with the grooves.

In embodiments where the electronic device 100 includes at least 2 tensioning mechanisms 30, the tensioning bands 34 of these tensioning mechanisms 30 may be symmetrically disposed about the second rack 43 to facilitate improving the uniformity of the tensioning force at different locations of the flexible screen 20, resulting in a more stable telescoping motion of the flexible screen 20.

As shown in fig. 11 and 14, the fixed seat 44 is provided with a bearing 45, and the output shaft 41a of the motor 41 is matched with the bearing 45, so that the output shaft 41a of the motor 41 can be supported by the fixed seat 44, and meanwhile, the bearing 45 ensures that the rotation of the output shaft 41a is not interfered by the fixed seat 44, so that the stability of the motor 41 driving the first rack 42 and the second rack 43 to reciprocate can be improved.

It should be noted that the second rack 43 may be directly connected to an end of the free portion 24 away from the fixed portion 22, or may be connected to the free portion 24 through other structural members, for example, as shown in fig. 4 to 6, and in some embodiments, the electronic device 100 includes a connection board 20b, where the connection board 20b is connected to an end of the free portion 24 away from the fixed portion 22, and the second rack 43 is fixed to the connection board 20 b. By this arrangement, the flexible screen 20 can be sealed by the connecting plate 20b, specifically, the edge (the edge far away from the side of the fixed portion 22) of the free portion 24, which is not needed to be displayed, is fixed on the connecting plate 20b, so that when the connecting plate 20b moves along the first direction along with the second rack 43, a uniform traction force can be applied to the free portion 24, so that the free portion 24 is prevented from being torn easily at the edge position due to uneven stress.

Glue can be adopted to bond the connecting plate 20b and the flexible screen 20, and the connecting plate 20b and the second rack 43 can be connected through connecting pieces such as screws or pins.

In the embodiment where the connection plate 20b is connected to the end of the free portion 24 remote from the fixed portion 22, one end of the tension band 34 is connected to the connection base, and the other end is connected to the connection plate 20b, so that the tension band 34 tensions the flexible screen 20 by pulling the connection plate 20b when the connection base 31 moves along the slide rail 32.

The second rack 43 and the connecting plate 20b are respectively located at two sides of the second housing 14, the second rack 43 is provided with a connecting portion 43a, the second housing 14 is provided with a clearance groove 14a, the connecting portion 43a penetrates through the clearance groove 14a and is connected with the connecting plate 20b, and when the output shaft 41a of the motor 41 rotates, the connecting portion 43a moves in the clearance groove 14a along the first direction. With this configuration, the position where the flexible screen 20 is connected to the connection board 20b can be attached to the second housing 14 as much as possible to obtain good support of the second housing 14, and the driving mechanism 40 can be disposed by fully utilizing the space in the thickness direction of the housing assembly 10, so as to reduce the thickness of the lamination in the thickness direction of the electronic device 100, and avoid the appearance of the electronic device 100 from being heavy.

Further, the two ends of the clearance groove 14a in the first direction form a first limiting portion a and a second limiting portion B, respectively, when the electronic device 100 is in the folded position, the connecting portion 43a contacts the first limiting portion a, and when the motor 41 is in the unfolded position, the connecting portion 43a contacts the second limiting portion B. In this embodiment, the limit formed by the movement of the connecting portion 43a by the clearance groove 14a may be utilized, so that the expansion and contraction of the electronic device 100 is controlled within a reasonable travel range, and no other limit structure is required, so that the structural complexity of the electronic device 100 is reduced.

In order to prevent the electronic apparatus 100 from being damaged beyond the movement stroke, the first limiting portion a is provided with a first sensor (not shown), and when the first sensor detects that the connection portion 43a is in contact with the first limiting portion a, the output shaft 41a of the motor 41 stops rotating. The second limiting portion B is provided with a second sensor, and when the second sensor detects that the connecting portion 43a is in contact with the second limiting portion B, the output shaft 41a of the motor 41 stops rotating.

Referring to fig. 15, fig. 15 is a block diagram of a circuit module of an electronic device 100 according to an embodiment of the present application. The electronic device 100 may include Radio Frequency (RF) circuitry 501, memory 502 including one or more computer readable storage media, an input unit 503, a display unit 504, a sensor 505, audio circuitry 506, a wireless fidelity (WiFi, wireless Fidelity) module 507, a processor 508 including one or more processing cores, and a power supply 509, as those skilled in the art will appreciate that the configuration of the electronic device 100 shown in fig. 15 is not limiting of the electronic device 100, and may include more or fewer components than shown, or a combination of certain components, or a different arrangement of components.

The radio frequency circuit 501 may be used to send and receive information, or receive and send signals during a call, specifically, after receiving downlink information of a base station, the downlink information is processed by one or more processors 508; in addition, data relating to uplink is transmitted to the base station. Typically, the radio frequency circuitry 501 includes, but is not limited to, an antenna, at least one amplifier, a tuner, one or more oscillators, a subscriber identity module (SIM, subscriber Identity Module) card, a transceiver, a coupler, a low noise amplifier (LNA, low Noise Amplifier), a duplexer, and the like. In addition, the radio frequency circuit 501 may also communicate with networks and other devices via wireless communications. The wireless communication may use any communication standard or protocol including, but not limited to, global system for mobile communications (GSM, global System of Mobile communication), universal packet Radio Service (GPRS, general Packet Radio Service), code division multiple access (CDMA, code Division Multiple Access), wideband code division multiple access (WCDMA, wideband Code Division Multiple Access), long term evolution (LTE, long Term Evolution), email, short message Service (SMS, short MESSAGING SERVICE), and the like.

Memory 502 may be used to store applications and data. The memory 502 stores application programs including executable code. Applications may constitute various functional modules. The processor 508 executes various functional applications and data processing by running application programs stored in the memory 502. The memory 502 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like; the storage data area may store data (such as audio data, phonebooks, etc.) created according to the use of the electronic device 100, and the like. In addition, memory 502 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device. Accordingly, the memory 502 may also include a memory controller to provide access to the memory 502 by the processor 508 and the input unit 503.

The input unit 503 may be used to receive input numbers, character information or user characteristic information such as fingerprints, and to generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function control. In particular, in one particular embodiment, the input unit 503 may include a touch-sensitive surface, as well as other input devices. The touch-sensitive surface, also referred to as a touch antenna assembly or a touch pad, may collect touch operations thereon or thereabout by a user (e.g., operations thereon or thereabout by a user using any suitable object or accessory such as a finger, stylus, etc.), and actuate the corresponding connection means according to a predetermined program. Alternatively, the touch-sensitive surface may comprise two parts, a touch detection device and a touch controller. The touch detection device detects the touch azimuth of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device and converts it into touch point coordinates, which are then sent to the processor 508, and can receive commands from the processor 508 and execute them.

Further, the touch-sensitive surface may cover the liquid crystal panel, and when the touch-sensitive surface detects a touch operation thereon or thereabout, the touch-sensitive surface is transferred to the processor 508 to determine the type of touch event, and the processor 508 then provides a corresponding visual output on the liquid crystal panel based on the type of touch event.

The display unit 504 may be used to display information entered by a user or provided to a user as well as various graphical user interfaces of the electronic device 100, which may be composed of graphics, text, icons, video, and any combination thereof.

Although in fig. 15 the touch sensitive surface and the liquid crystal panel are implemented as two separate components for input and output functions, in some embodiments the touch sensitive surface may be integrated with the liquid crystal panel to implement the input and output functions. It is understood that the antenna assembly 100 may include an input unit 503 and a display unit 504.

The electronic device 100 may also include at least one sensor 505, such as a proximity sensor, a motion sensor, and other sensors. Wherein the proximity sensor may turn off the liquid crystal panel and/or the backlight when the electronic device 100 is moved to the ear. As one of the motion sensors, the gravity acceleration sensor can detect the acceleration in all directions (generally three axes), and can detect the gravity and the direction when the mobile phone is stationary, and can be used for applications of recognizing the gesture of the mobile phone (such as horizontal and vertical screen switching, related games, magnetometer gesture calibration), vibration recognition related functions (such as pedometer and knocking), and the like; other sensors such as gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc. that may also be configured with the electronic device 100 are not described in detail herein.

Audio circuitry 506 may provide an audio interface between the user and electronic device 100 through speakers, microphones, and so forth. The audio circuit 506 may convert the received audio data into an electrical signal, transmit to a speaker, and convert the electrical signal into a sound signal for output by the speaker; on the other hand, the microphone converts the collected sound signals into electrical signals, which are received by the audio circuit 506 and converted into audio data, which are processed by the audio data output processor 508 for transmission to, for example, another electronic device 100 via the radio frequency circuit 501, or which are output to the memory 502 for further processing. The audio circuit 506 may also include a headset base to provide communication of the peripheral headset with the electronic device 100.

Wireless fidelity (WiFi) belongs to a short-range wireless transmission technology, and the electronic device 100 can help a user to send and receive e-mail, browse web pages, access streaming media and the like through the wireless fidelity module 507, so that wireless broadband internet access is provided for the user. Although fig. 15 shows the wireless fidelity module 507, it is understood that it is not a necessary component of the electronic device 100 and may be omitted entirely as desired within the scope of not changing the essence of the invention.

The processor 508 is a control center of the electronic device 100, connects various parts of the entire electronic device 100 using various interfaces and lines, and performs various functions of the electronic device 100 and processes data by running or executing application programs stored in the memory 502 and calling data stored in the memory 502, thereby performing overall monitoring of the electronic device 100. Optionally, the processor 508 may include one or more processing cores; preferably, the processor 508 may integrate an application processor that primarily handles operating systems, user interfaces, applications, etc., with a modem processor that primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 508.

The electronic device 100 also includes a power supply 509 that provides power to the various components. Preferably, the power supply 509 may be logically connected to the processor 508 through a power management system, so as to perform functions of managing charging, discharging, and power consumption management through the power management system. The power supply 509 may also include one or more of any of a direct current or alternating current power supply, a recharging system, a power failure detection circuit, a power converter or inverter, a power status indicator, and the like.

Although not shown in fig. 15, the electronic device 100 may further include a bluetooth module or the like, which is not described herein. In the implementation, each module may be implemented as an independent entity, or may be combined arbitrarily, and implemented as the same entity or several entities, and the implementation of each module may be referred to the foregoing method embodiment, which is not described herein again.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims

1. An electronic device, comprising:

a housing assembly including a first housing and a second housing;

2. The electronic device of claim 1, wherein the bracket includes a connecting arm, a first support arm, and a second support arm, the connecting arm being connected to an end of the slide rail, the first support arm and the second support arm being spaced apart from each other and each being connected to the connecting arm, the tensioning wheel being rotatably disposed between the first support arm and the second support arm, the tensioning wheel being movable relative to the slide rail in the first direction to adjust an amount of tensioning force applied to the tension band.

3. The electronic device of claim 2, wherein the first support arm and the second support arm are each provided with a mounting slot for mounting a rotating shaft, the rotating shaft being movable in a first direction within the mounting slot, the tensioning wheel being connected to the rotating shaft, one of the tensioning wheel and the connecting arm being provided with a first magnet, the other of the tensioning wheel and the connecting arm being provided with a first electromagnet, the electronic device comprising a controller electrically connected to the first electromagnet and adapted to control a magnitude of an energizing current of the first electromagnet, wherein the first electromagnet is capable of repelling the first magnet when energized, such that the tensioning wheel moves in the first direction relative to the slide rail.

4. The electronic device of claim 3, wherein at least one of the tensioning wheel and the connecting arm is provided with a distance sensor, the distance sensor is electrically connected with the controller, the distance sensor is used for detecting the relative distance between the tensioning wheel and the connecting arm and outputting a first feedback signal to the controller, and the controller is used for controlling the magnitude of the energizing current of the first electromagnet according to the first feedback signal.

5. The electronic device according to claim 3 or 4, wherein the tensioning wheel is provided with a pressure sensor electrically connected with the controller, the pressure sensor is used for detecting tensioning force of the tensioning wheel on the tensioning belt and outputting a second feedback signal to the controller, and the controller is used for controlling the energizing current of the first electromagnet according to the second feedback signal.

6. The electronic device according to claim 5, comprising at least 2 tensioning mechanisms arranged at intervals along a second direction to tension different positions of the flexible screen, the second direction being perpendicular to the first direction, the controller being configured to adjust an energizing current of each of the first electromagnets so that a difference between tensioning forces applied to the flexible screen by the tensioning straps connected to the different positions of the flexible screen is within a preset range when the difference between tensioning forces applied to the flexible screen by the tensioning straps connected to the different positions of the flexible screen exceeds the preset range.

7. The electronic device of claim 2 or 3, wherein the end of the sliding rail is provided with a slot, the connecting arm is provided with a plug-in portion, the plug-in portion is movably plugged into the slot along the first direction, a magnetic control assembly is arranged between the connecting arm and the end of the sliding rail, and the magnetic control assembly is used for driving the connecting arm to move towards the end far away from the sliding rail, so that the tensioning wheel is used for tensioning the tensioning belt.

8. The electronic device of claim 7, wherein the magnetic control assembly comprises a second electromagnet and a second magnet which are correspondingly arranged, one of the second electromagnet and the second magnet is arranged on the connecting arm, and the other of the second electromagnet and the second magnet is arranged on the end part of the sliding rail; the electronic equipment comprises a controller, wherein the controller is electrically connected with the second electromagnet and is used for controlling the size of the energizing current of the second electromagnet, and the second electromagnet can repel the second magnet when energized, so that the bracket drives the tensioning wheel to move along the first direction relative to the sliding rail.

9. The electronic device of claim 1, further comprising a drive mechanism disposed within the housing assembly, the drive mechanism for driving the first housing and the second housing relative to each other in the first direction.

10. The electronic device according to claim 9, wherein the driving mechanism includes a motor, a first rack and a second rack, the motor is fixed in the first housing, an output shaft of the motor is connected with a first gear and a second gear, the first gear is meshed with the first rack, the second gear is meshed with the second rack, the first rack is fixed with the second housing, the second rack is fixed with an end of the free portion, which is far away from the fixed portion, and when the output shaft of the motor rotates, the output shaft drives the first rack and the second rack to move along the first direction via the first gear and the second gear, respectively, and a moving speed of the second rack is twice a moving speed of the first rack.

11. The electronic device according to claim 1, wherein a roller shaft is provided at an end of the second housing away from the fixed portion, and the free portion is tensioned to the roller shaft.

12. The electronic device according to claim 11, wherein the second housing is provided with a plurality of the roller shafts, the plurality of the roller shafts are coaxially arranged in a second direction, the second direction is perpendicular to the first direction, and the second direction is perpendicular to a thickness direction of the electronic device.