CN114333576A

CN114333576A - Electronic equipment

Info

Publication number: CN114333576A
Application number: CN202111525996.4A
Authority: CN
Inventors: 王国元; 刘春发; 陈志�; 周忠厚; 童展
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2022-04-12

Abstract

The application discloses an electronic device, which comprises a shell and a movable support, wherein the shell is provided with a driving component and a transmission component which are connected with each other, and one part of the transmission component can move along a first direction under the driving action of the driving component; the movable bracket is connected with a part of the transmission assembly and can move along a first direction under the driving of the transmission assembly to be close to or far away from the shell; the flexible screen is characterized by also comprising a scroll, a torsional elastic piece and a flexible screen, wherein the scroll is arranged on the shell, the torsional elastic piece is respectively connected with the shell and the scroll, and the scroll can rotate relative to the shell; one side of the flexible screen is wound on the reel, and the other side of the flexible screen is fixedly connected with the movable support; the flexible screen has an expansion state and a contraction state, and when the movable support moves away from the shell, the flexible screen is switched from the contraction state to the expansion state; when the movable support moves close to the shell, the flexible screen is switched from the unfolding state to the folding state.

Description

Electronic equipment

Technical Field

The present application relates to the field of electronic product technologies, and in particular, to an electronic device.

Background

With the development of science and technology, various electronic products gradually enter thousands of households to become necessities of life of people, and the electronic products bring great convenience to the life of people. Especially in recent years, people increasingly depend on smart phones in life, and the screen size of the smart phones directly influences the use experience of users. When a user uses the smart phone for office and entertainment, the user can hope that the size of the screen of the smart phone is larger as much as possible, so that a better visual effect can be obtained; when a user needs to carry the mobile phone out, the mobile phone with a larger size reduces the portability of the mobile phone. Therefore, a smart phone with a flexible screen and adjustable size has become a focus of research of many mobile phone manufacturers in recent years.

Because the texture of the flexible screen is relatively soft, in the prior art, a smart phone with an adjustable screen size often encounters the problem that the flexible screen cannot be retracted smoothly after being unfolded. If the flexible screen can not be retracted smoothly, the use experience of a user is influenced, and damage to the flexible screen can be caused.

In view of the above, a new technical solution is needed to solve the above technical problems.

Disclosure of Invention

An object of the present application is to provide a new technical solution for an electronic device.

According to a first aspect of the present application, there is provided an electronic device comprising:

the transmission mechanism comprises a shell, a first transmission mechanism and a second transmission mechanism, wherein the shell is provided with a driving assembly and a transmission assembly which are connected with each other, and one part of the transmission assembly can move along a first direction under the driving action of the driving assembly;

the movable bracket is connected with one part of the transmission assembly and can move along a first direction to be close to or far away from the shell under the driving of the transmission assembly;

the winding shaft is arranged on the shell, the torsional elastic piece is respectively connected with the shell and the winding shaft, and the winding shaft can rotate relative to the shell;

one side of the flexible screen is wound on the reel, and the other side of the flexible screen is fixedly connected with the movable support;

the flexible screen has an expanded state and a contracted state, and is switched from the contracted state to the expanded state when the movable support moves away from the shell; when the movable support moves close to the shell, the flexible screen is switched from the unfolding state to the folding state.

Optionally, the electronic device further comprises a pin, and the torsional elastic member is connected with the housing through the pin; a first accommodating hole is formed in the end part of the scroll, and the torsional elastic piece is arranged in the first accommodating hole; the torsional elastic member has a second receiving hole in which a portion of the pin is located, and the other portion of the pin is connected with the housing.

Optionally, a first clamping groove is formed in a position, corresponding to the first accommodating hole, of the side wall of the reel, and a second clamping groove is formed in a side wall of the pin;

the outer wall surface of the torsional elastic part is provided with a first buckle, and the inner wall surface of the torsional elastic part is provided with a second buckle; the first buckle is matched and clamped with the first clamping groove; the second buckle is matched and clamped with the second clamping groove.

Optionally, the driving assembly includes a stepping motor and a speed reducer, an output shaft of the stepping motor is connected to the speed reducer, and the speed reducer is connected to the transmission assembly.

Optionally, the transmission assembly comprises a worm, a helical gear, a spur gear and a rack; the worm is connected with the driving assembly; the helical gear is meshed with the worm, the straight gear is coaxially connected with the helical gear, and the rack is meshed with the straight gear; the rack is connected with the movable support and can drive the movable support to move along a first direction.

Optionally, the housing includes a housing and a fixed bracket, the housing has a first surface, the fixed bracket is fixedly connected to the first surface, and the fixed bracket can be connected with the movable bracket in a matching manner.

Optionally, the fixed bracket is provided with a plurality of first gear shaping teeth extending along a first direction, the plurality of first gear shaping teeth are arranged along a second direction, and a first slot is formed between every two adjacent first gear shaping teeth;

the movable support is provided with a plurality of second gear shaping teeth extending along a first direction, the second gear shaping teeth are distributed along a second direction, and a second slot is formed between every two adjacent second gear shaping teeth; the first gear shaping can be matched and spliced with the second slot, and the second gear shaping can be matched and spliced with the first slot.

Optionally, the electronic device further includes a first reinforcing plate, and the first reinforcing plate is fixedly connected to the bottom of the fixing bracket.

Optionally, the electronic device further includes a second reinforcing plate fixedly connected to a side portion of the movable bracket.

Optionally, the electronic device further includes an adapter plate, and the movable bracket is connected with a part of the transmission assembly through the adapter plate; the adapter plate is provided with a first mounting surface and a second mounting surface which are arranged oppositely; the first mounting surface is connected with the movable bracket, and the second mounting surface is connected with a part of the transmission assembly.

Optionally, the electronic device further includes a guide rail pair, the guide rail pair includes a first sliding member and a second sliding member, the first sliding member is disposed on the first surface, the second sliding member is disposed on the second mounting surface, and the first sliding member is connected with the second sliding member in a sliding fit manner.

Optionally, the guide rail pairs are oppositely arranged in parallel.

Optionally, the first surface is provided with a stopper, and the first sliding member abuts against the stopper; and the second mounting surface is convexly provided with a mounting base, and the second sliding piece is abutted to the mounting base.

In the electronic equipment that this application embodiment provided, twist reverse elastic component and spool and cooperate, twist reverse elastic component's elastic deformation restoring force and can drive the spool and rotate in order to help flexible screen to contract smoothly, avoid flexible screen contraction not smooth emergence to buckle and damage, influence the condition that the user used and experienced.

Further features of the present application and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which is to be read in connection with the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application.

Fig. 1 is an exploded schematic view of an electronic device according to the present application;

fig. 2 is a schematic partial structure diagram of an electronic device according to the present application;

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2;

fig. 4 is a schematic diagram illustrating an overall structure of a driving assembly and a transmission assembly of an electronic device according to the present invention;

fig. 5 is an exploded schematic view of a driving assembly and a transmission assembly of an electronic device according to the present invention;

fig. 6 is a first schematic structural diagram illustrating an electronic device in an unfolded state according to the present application;

fig. 7 is a schematic structural diagram of an electronic device in an unfolded state according to the present application;

fig. 8 is a schematic structural diagram of an electronic device in an unfolded state according to the present application;

fig. 9 is a first schematic structural diagram illustrating an electronic device according to the present application in a retracted state;

fig. 10 is a schematic structural diagram of an electronic device in a retracted state according to the present application;

FIG. 11 is a schematic diagram of an electronic device with multiple sets of driving components and transmission components according to the present application;

fig. 12 is a schematic structural diagram of a transfer board in an electronic device according to the present application;

fig. 13 is a schematic structural diagram of a transfer board in an electronic device according to the present application.

Description of reference numerals:

1. a housing; 101. a first surface; 102. a stopper; 103. a pin hole; 2. a drive assembly; 21. a stepping motor; 22. a speed reducer; 23. a flexible PCB board; 31. a worm; 32. a helical gear; 33. a spur gear; 34. a rack; 35. a bottom case; 36. an upper shell; 361. a shaft hole; 37. a gear shaft; 38. a first bearing; 39. a second bearing; 4. fixing a bracket; 41. a first gear shaping; 42. a first slot; 5. a movable support; 51. a second gear shaping; 52. a second slot; 6. a reel; 61. a first accommodation hole; 62. a first card slot; 7. a torsional elastic member; 71. a second accommodation hole; 72. a first buckle; 73. a second buckle; 8. a flexible screen; 9. a pin; 91. a second card slot; 10. a first reinforcing plate; 11. a second reinforcing plate; 12. a first slider; 13. a second slider; 14. an adapter plate; 141. a first mounting surface; 142. a second mounting surface; 143. and (5) mounting a base.

Detailed Description

Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Referring to fig. 1 to 13, according to an embodiment of the present application, an electronic device is provided, which includes a housing and a movable support 5, the housing is provided with a driving component 2 and a transmission component, which are connected to each other, and a part of the transmission component can move along a first direction under the driving action of the driving component 2; the movable bracket 5 is connected with a part of the transmission assembly, and the movable bracket 5 can move along a first direction to be close to or far away from the shell under the driving of the transmission assembly; the flexible screen display device further comprises a scroll 6, a torsional elastic part 7 and a flexible screen 8, wherein the scroll 6 is arranged on the shell, the torsional elastic part 7 is respectively connected with the shell and the scroll 6, and the scroll 6 can rotate relative to the shell; one side of the flexible screen 8 is wound on the reel 6, and the other side of the flexible screen 8 is fixedly connected with the movable bracket 5;

the flexible screen 8 has an expanded state and a contracted state, and when the movable support 5 moves away from the shell, the flexible screen 8 is switched from the contracted state to the expanded state; when the movable support 5 moves close to the housing, the flexible screen 8 is switched from the expanded state to the contracted state.

In the electronic device provided by the embodiment of the application, the driving assembly 2 drives the transmission assembly to move, a part of structure of the transmission assembly is driven by the driving assembly 2 to move in a translation mode along the first direction, and meanwhile, the movable support 5 is driven by the transmission assembly to move in a translation mode along the first direction. When a user needs to enlarge the size of the flexible screen 8, the driving direction of the driving assembly 2 is controlled to enable the movable support 5 to move away from the shell in a translation mode, at the moment, the side portion, connected with the movable support 5, of the flexible screen 8 also moves towards the direction away from the shell, the flexible screen 8 is unfolded, and therefore the size of the flexible screen 8 is enlarged. In this process, the flexible screen 8 is wound around the side of the winding shaft 6 and rotates around the winding shaft 6, and at the same time, the flexible screen 8 drives the winding shaft 6 to rotate relative to the housing, and since one part of the torsional elastic member 7 is connected with the housing and remains stationary and the other part of the torsional elastic member 7 is connected with the winding shaft 6 and rotates, the torsional elastic member 7 is elastically deformed and generates an elastic deformation restoring force. When a user needs to reduce the size of the flexible screen 8, the driving direction of the driving assembly 2 is controlled to enable the movable support 5 to move in a translation mode close to the shell, at the moment, the side portion, connected with the movable support 5, of the flexible screen 8 also moves towards the direction close to the shell, the flexible screen 8 is contracted, and therefore the size of the flexible screen 8 is reduced. In the process of contracting the flexible screen 8, the elastic deformation restoring force generated before the elastic element 7 is twisted is released, the elastic element 7 is twisted to drive the scroll 6 to rotate reversely, and the scroll 6 drives the flexible screen 8 to rotate back to the contracted state.

To sum up, the torsion elastic piece 7 that sets up in this electronic equipment cooperatees with spool 6, and the elastic deformation restoring force that twists reverse elastic piece 7 can drive spool 6 and rotate in order to help flexible screen 8 to contract smoothly, avoids flexible screen 8 to contract smoothly to take place to buckle and damage, influences the condition that the user used and experienced.

Further specifically, the first direction is a direction perpendicular to the reel 6, i.e., a direction shown by b in fig. 2.

In a specific example, the housing comprises a shell 1 and a fixed bracket 4, the shell 1 has a first surface 101, the fixed bracket 4 is fixedly connected to the first surface 101, and the fixed bracket 4 can be matched and connected with the movable bracket 5.

Further specifically, the driving assembly 2 and the transmission assembly are disposed on the first surface 101; the reel 6 is arranged on the shell 1 and is positioned on one side of the fixed bracket 4 away from the movable bracket 5; in the unfolded state of the flexible screen 8, the fixed bracket 4 may support a part of the structure of the flexible screen 8, and specifically, an upper portion of the fixed bracket 4 is in sliding contact with the flexible screen 8 and supports the flexible screen 8. Further specifically, the bottom of the fixed support 4 is provided with a bending portion, so that a certain space gap is formed between the fixed support 4 and the housing 1, and other parts of the electronic device are convenient to install.

Referring to fig. 2 and 3, in one embodiment, the electronic device further includes a pin 9, and the torsional elastic member 7 is connected to the housing through the pin 9; a first accommodating hole 61 is formed at the end of the reel 6, and the torsional elastic element 7 is arranged in the first accommodating hole 61; the torsional spring 7 has a second receiving hole 71, a part of the pin 9 is located in the second receiving hole 71, and another part of the pin 9 is connected to the housing. More specifically, an outer wall surface of the torsional elastic member 7 is connected to the spool 6, and an inner wall surface of the torsional elastic member 7 is connected to the pin 9.

In this specific example, the torsional elastic member 7 is fitted in the first receiving hole 61 formed in the end of the spool 6, and a part of the pin 9 is fitted in the second receiving hole 71 of the torsional elastic member 7, so that the spool 6 rotates the torsional elastic member 7 around the pin 9. More specifically, a pin hole 103 is opened on the housing 1 to mount the pin 9. More specifically, the torsion elastic member 7 is a spiral spring, and the spiral spring is formed by rolling an elastic steel strip into a multi-turn spiral cylinder. Further specifically, the pin holes 103 are respectively formed in two opposite side walls of the housing 1, the first receiving holes 61 are respectively formed in two ends of the winding shaft 6, the two pins 9 and the two torsional elastic members 7 are respectively provided, one of the two pins 9 and the two torsional elastic members 7 is arranged corresponding to one end of the winding shaft 6, and the other one of the two pins 9 and the two torsional elastic members 7 is arranged corresponding to the other end of the winding shaft 6.

Referring to fig. 2 and 3, in an embodiment, further, a first locking groove 62 is formed in a side wall of the reel 6 at a position corresponding to the first accommodating hole 61, and a second locking groove 91 is formed in a side wall of the pin 9; a first buckle 72 is arranged on the outer wall surface of the torsional elastic member 7, and a second buckle 73 is arranged on the inner wall surface of the torsional elastic member 7; the first buckle 72 is in matched clamping connection with the first clamping groove 62; the second buckle 73 is in matched clamping connection with the second clamping groove 91.

In this particular example, the torsional elastic member 7 is engaged with the reel 6 on the one hand and the pin 9 on the other hand, so that the assembly is simple and easy to operate, and the torsional elastic member 7 is connected with the reel 6 and the pin 9 very reliably and firmly, so as to ensure that the torsional elastic member 7 can be elastically deformed under the driving of the reel 6, thereby providing reliable elastic restoring force for the contraction of the flexible screen 8.

Referring to fig. 4 and 5, in one embodiment, the driving assembly 2 includes a stepping motor 21 and a speed reducer 22, an output shaft of the stepping motor 21 is connected to the speed reducer 22, and the speed reducer 22 is connected to the transmission assembly.

In this particular example, the stepper motor 21 may receive the digital control signal and generate a stable power output, and the decelerator 22 may reduce the operation speed of the stepper motor 21 to a suitable range and transmit the decelerated motion to the transmission assembly, so as to ensure that the transmission assembly operates smoothly and the service life of the transmission assembly is prolonged, and reduce the operation noise to a certain extent. Further specifically, the stepping motor 21 is connected with a flexible PCB 23 to provide electrical connection for the stepping motor 21.

Referring to fig. 4 and 5, in one embodiment, further, the transmission assembly includes a worm 31, a helical gear 32, a spur gear 33, and a rack 34; the worm 31 is connected with the driving assembly 2; the helical gear 32 is meshed with the worm 31, the straight gear 33 is coaxially connected with the helical gear 32, and the rack 34 is meshed with the straight gear 33; the rack 34 is connected to the movable bracket 5 and can drive the movable bracket 5 to move along a first direction.

In this specific example, the worm 31 is connected to the driving assembly 2, specifically to the speed reducer 22, and the engagement between the worm 31 and the helical gear 32 can perform a further speed reduction function and can generate a self-locking function, that is, it is ensured that the transmission assembly only moves in a predetermined direction under the driving function of the driving assembly 2, and does not move under the action of other external forces, and further does not move in a reverse direction under the action of external forces, so that the reliability of the whole electronic device is improved; unnecessary movement does not occur even if the stepping motor 21 is powered off, and the stepping motor 21 does not need to be constantly charged, so that energy can be saved. More specifically, the speed reducer 22, the worm 31, the helical gear 32 and the spur gear 33 are all installed in a transmission, the transmission comprises a bottom shell 35 and an upper shell 36, the speed reducer 22, the worm 31, the helical gear 32 and the spur gear 33 are arranged in the bottom shell 35, the upper shell 36 is provided with a shaft hole 361, one end of the gear shaft 37 is installed in the shaft hole 361, and the other end of the gear shaft 37 sequentially penetrates through the spur gear 33 and the helical gear 32 and is installed on the bottom shell 35. More specifically, a first bearing 38 and a second bearing 39 are respectively sleeved at two ends of a middle shaft of the worm 31, and both the first bearing 38 and the second bearing 39 are fixedly installed in the bottom case 35. The worm 31, the helical gear 32 and the straight gear 33 cooperate to convert the rotary motion of the stepping motor 21 into a linear motion to drive the rack 34 to make a linear reciprocating motion. According to actual needs, the driving assembly 2 and the transmission assembly can be provided with only one set, as shown in fig. 11, or can be provided with a plurality of sets.

Referring to fig. 8, in an embodiment, the fixing bracket 4 has a plurality of first gear shaping teeth 41 extending along a first direction, the plurality of first gear shaping teeth 41 are arranged along a second direction, and a first slot 42 is formed between two adjacent first gear shaping teeth 41; the movable support 5 is provided with a plurality of second gear shaping teeth 51 extending along a first direction, the plurality of second gear shaping teeth 51 are arranged along a second direction, and a second slot 52 is formed between every two adjacent second gear shaping teeth 51; the first gear shaping 41 can be matched and plugged with the second slot 52, and the second gear shaping 51 can be matched and plugged with the first slot 42.

Further specifically, the second direction is perpendicular to the first direction; referring to fig. 2, the first direction is a b direction and the second direction is a c direction.

In this specific example, the fixed support 4 and the movable support 5 are inserted and connected in a matching manner, so that the movable support 5 can move stably and reliably along the first direction, and the movable support 5 is prevented from shaking in the moving process, thereby improving the stability of the whole electronic device. In addition, the structure of the fixed support 4 and the movable support 5 can provide a reliable supporting function for the flexible screen 8, and prevent the flexible screen 8 from bending and deforming during the expansion and contraction process. Further specifically, the fixed bracket 4 and the movable bracket 5 are sheet metal parts or plastic parts; more specifically, the first gear shaping 41, the first slot 42, the second gear shaping 51 and the second slot 52 may be formed by punching or cutting.

Referring to fig. 1, in one embodiment, the electronic device further includes a first reinforcing plate 10, and the first reinforcing plate 10 is fixedly connected to the bottom of the fixing bracket 4.

In this specific example, the first reinforcing plate 10 is installed at the bottom of the fixed bracket 4, and the first reinforcing plate 10 not only can play a role of reinforcing the fixed bracket 4, but also can support the second gear 51 embedded in the fixed bracket 4 by the movable bracket 5 when the fixed bracket 4 is in fit connection with the movable bracket 5, and the first reinforcing plate 10 can also support the movable bracket 5. Further specifically, the first reinforcing plate 10 may be provided in plurality, for example, two, respectively on both sides of the bottom of the fixing bracket 4.

Referring to fig. 8-10, in one embodiment, the electronic device further includes a second reinforcing plate 11, where the second reinforcing plate 11 is fixedly connected to a side of the movable bracket 5, and further specifically, the second reinforcing plate 11 is fixedly connected to a side of the movable bracket 5 away from the fixed bracket 4.

In this specific example, the second reinforcing plate 11 is disposed to reinforce the movable bracket 5, and after the flexible screen 8 is shrunk and the movable bracket 5 is inserted into the fixed bracket 4, the second reinforcing plate 11 is spliced with the housing 1 to form a complete housing shape, so that the appearance of the electronic device is more beautiful.

Referring to fig. 12 and 13, in one embodiment, the electronic device further includes an adapter plate 14, and the movable bracket 5 is connected to a part of the transmission assembly through the adapter plate 14; the adapter plate 14 is provided with a first mounting surface 141 and a second mounting surface 142 which are arranged oppositely; the first mounting surface 141 is connected to the movable bracket 5, and the second mounting surface 142 is connected to a part of the transmission assembly.

In this particular example, the provision of the adapter plate 14 facilitates the connection of the mobile carriage 5 to the transmission assembly, in particular the connection of the mobile carriage 5 to the rack 34. More specifically, the adapter plate 14 and the movable support 5 can be connected by means of screws, welding, glue bonding, and the like; more specifically, the rack 34 and the adapter plate 14 may be connected by screws, welding, glue, or the like.

Referring to fig. 1 and fig. 11, in an embodiment, the electronic apparatus further includes a guide rail pair, where the guide rail pair includes a first sliding member 12 and a second sliding member 13, the first sliding member 12 is disposed on the first surface 101, the second sliding member 13 is disposed on the second mounting surface 142, and the first sliding member 12 is connected to the second sliding member 13 in a sliding fit manner.

In this specific example, the first sliding member 12 and the second sliding member 13 are arranged to provide a good guiding function for the reciprocating translational motion of the movable bracket 5, so as to ensure the smooth running and good linear track of the movable bracket 5. Moreover, after the movable support 5 moves away from the fixed support 4, the bottom of the movable support 5 is in a suspended state, and the second sliding member 13 can play a good supporting role for the adapter plate 14 and the movable support 5, and also play a good supporting role for the flexible screen 8, so as to prevent the flexible screen 8 from deforming. Further specifically, the first slider 12 may be, for example, a slide rail, and the second slider 13 may be, for example, a slider; or the first slide 12 may be a slide and the second slide 13 may be a slide; as long as the first slider 12 and the second slider 13 can be connected in a sliding fit.

Referring to fig. 1 and 11, in one embodiment, the guide rail pairs are further arranged in two sets in parallel and oppositely.

If only one guide rail pair is arranged, the movable support 5 is easy to have unstable running. In this specific example, the two sets of guide rail pairs symmetrically arranged may be respectively located at two side positions of the housing 1, that is, at two side positions of the adapter plate 14, so as to provide a more balanced guiding effect for the reciprocating translational motion of the movable bracket 5, and ensure that the movable bracket 5 operates stably. And the two sets of guide rail pairs can play a better role in supporting the adapter plate 14 and the movable bracket 5 which do linear motion.

Referring to fig. 1, 12 and 13, in an embodiment, further, the first surface 101 is provided with a stopper 102, and the first sliding member 12 abuts against the stopper 102; the second mounting surface 142 is provided with a mounting base 143 in a projecting manner, and the second slider 13 abuts against the mounting base 143.

When two sets of guide rail pairs are arranged, the installation parallelism of the two sets of guide rail pairs is required to be ensured, so that the running smoothness can be ensured; if the two sets of guide rail pairs are not parallel to each other, the guide rail pairs cannot play a good role in guiding the reciprocating translational motion of the movable support 5, and even can be stuck. At the same time, in the same set of guide rail pairs, it is also noted that the gap between the first slide 12 and the second slide 13 cannot be too large or too small. If the clearance is too large, the first sliding part 12 and the second sliding part 13 cannot be well matched with the balls; if the gap is too small, the friction is too large, which affects the smoothness of the movement. Thus, in this particular example, the stop 102 may guide the mounting position of the first slider 12, and the mounting base 143 may guide the mounting position of the second slider 13 to ensure parallelism of the two sets of rail pairs and proper clearance between the first slider 12 and the second slider 13 in the same set of rail pairs. More specifically, the two second sliders 13 abut respectively at the outside positions where the two mounting bases 143 are away from each other. More specifically, the two mounting bases 143 are integrally formed on the interposer 14. More specifically, one of the two stoppers 102 is integrally formed on the first surface 101, and the other stopper 102 is detachably connected to the first surface 101, so that the installation distance between the two rail pairs can be adjusted according to actual conditions.

Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present application. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present application. The scope of the application is defined by the appended claims.

Claims

1. An electronic device, comprising:

the device comprises a shell, a driving component (2) and a transmission component which are connected with each other are arranged on the shell, and one part of the transmission component can move along a first direction under the driving action of the driving component (2);

the movable support (5) is connected with one part of the transmission assembly, and the movable support (5) can move along a first direction to be close to or far away from the shell under the driving of the transmission assembly;

the winding shaft (6) is arranged on the shell, the torsional elastic piece (7) is respectively connected with the shell and the winding shaft (6), and the winding shaft (6) can rotate relative to the shell;

one side of the flexible screen (8) is wound on the reel (6), and the other side of the flexible screen (8) is fixedly connected with the movable support (5);

the flexible screen (8) has an expanded state and a contracted state, and when the movable support (5) moves away from the shell, the flexible screen (8) is switched from the contracted state to the expanded state; when the movable support (5) moves close to the shell, the flexible screen (8) is switched from the unfolding state to the folding state.

2. The electronic device according to claim 1, characterized in that the electronic device further comprises a pin (9), the torsional spring (7) being connected to the housing by means of the pin (9); a first accommodating hole (61) is formed in the end of the reel (6), and the torsional elastic piece (7) is arranged in the first accommodating hole (61); the torsional spring (7) has a second receiving opening (71), a part of the pin (9) being located in the second receiving opening (71), and another part of the pin (9) being connected to the housing.

3. The electronic device according to claim 2, wherein a side wall of the reel (6) is opened with a first catching groove (62) at a position corresponding to the first receiving hole (61), and a side wall of the pin (9) is opened with a second catching groove (91);

a first buckle (72) is arranged on the outer wall surface of the torsional elastic part (7), and a second buckle (73) is arranged on the inner wall surface of the torsional elastic part (7); the first buckle (72) is in matched clamping connection with the first clamping groove (62); and the second buckle (73) is in matched clamping connection with the second clamping groove (91).

4. The electronic device according to claim 1, characterized in that the drive assembly (2) comprises a stepping motor (21) and a speed reducer (22), an output shaft of the stepping motor (21) being connected with the speed reducer (22), the speed reducer (22) being connected with the transmission assembly.

5. The electronic device according to claim 1 or 4, wherein the transmission assembly comprises a worm (31), a helical gear (32), a spur gear (33) and a rack (34); the worm (31) is connected with the driving component (2); the helical gear (32) is meshed with the worm (31), the straight gear (33) is coaxially connected with the helical gear (32), and the rack (34) is meshed with the straight gear (33); the rack (34) is connected with the movable support (5) and can drive the movable support (5) to move along a first direction.

6. The electronic device according to claim 1, wherein the housing comprises a shell (1) and a fixed bracket (4), the shell (1) has a first surface (101), the fixed bracket (4) is fixedly connected to the first surface (101), and the fixed bracket (4) can be in fit connection with the movable bracket (5).

7. The electronic device according to claim 6, wherein the fixing bracket (4) has a plurality of first gear teeth (41) extending along a first direction, the plurality of first gear teeth (41) are arranged along a second direction, and a first slot (42) is formed between two adjacent first gear teeth (41);

the movable support (5) is provided with a plurality of second gear shaping teeth (51) extending along a first direction, the second gear shaping teeth (51) are arranged along a second direction, and a second slot (52) is formed between every two adjacent second gear shaping teeth (51); the first gear shaping (41) can be matched and plugged with the second slot (52), and the second gear shaping (51) can be matched and plugged with the first slot (42).

8. The electronic device according to claim 7, further comprising a first reinforcing plate (10), wherein the first reinforcing plate (10) is fixedly connected to the bottom of the fixing bracket (4).

9. The electronic device according to claim 1, further comprising a second reinforcing plate (11), wherein the second reinforcing plate (11) is fixedly connected to a side portion of the movable bracket (5).

10. The electronic device according to claim 6, characterized in that it further comprises an adapter plate (14), the movable support (5) being connected to a part of the transmission assembly through the adapter plate (14); the adapter plate (14) is provided with a first mounting surface (141) and a second mounting surface (142) which are arranged oppositely; the first mounting surface (141) is connected with the movable bracket (5), and the second mounting surface (142) is connected with a part of the transmission assembly.

11. The electronic device according to claim 10, further comprising a guide rail pair, wherein the guide rail pair comprises a first sliding member (12) and a second sliding member (13), the first sliding member (12) is disposed on the first surface (101), the second sliding member (13) is disposed on the second mounting surface (142), and the first sliding member (12) and the second sliding member (13) are connected in a sliding fit manner.

12. The electronic device of claim 11, wherein the rail pairs are arranged in two sets in parallel and opposite to each other.

13. Electronic device according to claim 12, characterized in that said first surface (101) is provided with a stop (102), said first slide (12) being in abutment with said stop (102); an installation base (143) is provided to the second installation surface (142) in a protruding manner, and the second slider (13) abuts against the installation base (143).