CN107748592B

CN107748592B - Tablet personal computer

Info

Publication number: CN107748592B
Application number: CN201711098777.6A
Authority: CN
Inventors: 张华�; 张敏; 周杰彦; 顾向艺
Original assignee: Lenovo Beijing Ltd
Current assignee: Lenovo Beijing Ltd
Priority date: 2017-11-09
Filing date: 2017-11-09
Publication date: 2020-12-18
Anticipated expiration: 2037-11-09
Also published as: CN107748592A

Abstract

The invention discloses a tablet personal computer which comprises a flexible screen and a limiting structure, wherein the flexible screen can be bent along a preset area to form a first unit and a second unit, the limiting structure is embedded in the preset area of the flexible screen, and the limiting structure is used for limiting the bending angle range between the first unit and the second unit. According to the invention, the limiting structure is arranged in the preset area, so that the first unit and the second unit can only be bent within the range of the bending angle allowed by the limiting structure, and the allowed bending angle is an angle which is not capable of causing the flexible screen to be broken or generating a crease which can not be repaired forever due to bending, thereby limiting the excessive bending of the flexible screen and preventing the flexible screen from being damaged due to the excessive bending.

Description

Tablet personal computer

Technical Field

The invention relates to the technical field of computers, in particular to a tablet personal computer with a flexible screen.

Background

With the continuous development of electronic technology, electronic equipment with a flexible screen appears in the prior art, and the electronic equipment can be made to be in different forms by bending the flexible screen. For example, after the flexible screen is bent, the bending area divides the flexible screen into two parts, one part is used as a display screen for displaying, the other part is used as a touch keyboard for inputting, and after the flexible screen is restored to a flat state, the whole flexible screen is used as the display screen.

However, the electronic device with the flexible screen in the prior art has the following disadvantages:

the degree of bending of the flexible screen is not limited, so that the flexible screen may be damaged due to excessive bending.

Disclosure of Invention

In order to solve the technical problems in the prior art, embodiments of the present invention provide a tablet computer with a flexible screen.

In order to solve the technical problem, the embodiment of the invention adopts the following technical scheme:

the utility model provides a tablet computer, includes flexible screen, flexible screen can buckle in order to form first unit and second unit through following a predetermined region, tablet computer is still including inlaying and locating flexible screen predetermine regional limit structure, limit structure is used for injecing first unit with the angle scope of buckling between the second unit.

Preferably, the bending angle between the first unit and the second unit ranges from 0 ° to 120 °.

Preferably, the limiting structure comprises a first rotor and a second rotor which are coaxially and relatively rotatably arranged; the first rotor is connected to the first unit and can rotate with the first unit, and the second rotor is connected to the second unit and can rotate with the second unit; offer the arcuation spacing groove of circumference extension on the second rotor, be formed with on the first rotor and stretch into to the bulge of spacing groove when first rotor and second rotor rotate relatively, the bulge is followed the spacing groove slides, and the both ends of spacing groove prevent the bulge roll-off the spacing groove.

Preferably, the first rotor and the second rotor are both columnar, and the end face of one end of the second rotor, which is opposite to the first rotor, is provided with the limit groove; the projection is formed on an end surface of an end of the first rotor opposite to the second rotor.

Preferably, the protruding portion is an arc-shaped slat adapted to the limiting groove, the limiting groove penetrates through the cylindrical surface of the second rotor, when the slat extends into the limiting groove, the inner side surface of the slat is attached to the groove bottom of the limiting groove, and the outer side surface of the slat is flush with the cylindrical surface of the second rotor.

Preferably, the projection has a first end and a second end in a rotational direction along the stopper groove; magnets with opposite poles are arranged at the first end of the protruding part and the end, corresponding to the first end, of the limiting groove respectively; and magnets with opposite poles are respectively arranged at the second end of the protruding part and one end of the limiting groove corresponding to the second end.

Preferably, the limiting structure further comprises a spring top ball assembly; an accommodating groove is formed in the first rotor; the spring ejecting ball assembly comprises a moving body which is arranged in the accommodating groove and can move along the axial direction of the first rotor, an ejecting ball which moves along with the moving body and protrudes out of the end face of the first rotor opposite to the second rotor, and a spring which is arranged in the accommodating groove and used for pushing the moving body towards the direction of the second rotor; a circle of recess is formed on the end face of the second rotor opposite to the first rotor, and when the first rotor and the second rotor rotate relatively, the top ball is embedded into the recess so that the first rotor and the second rotor are kept at a relatively rotating angle.

Preferably, the limiting structure further comprises a first rotating shaft and a second rotating shaft; the first rotor is fixed on the first rotating shaft; the second rotor is fixed on the second rotating shaft; a first bearing plate is arranged on the first rotating shaft, and a second bearing plate is arranged on the second rotating shaft; the first bearing plate extends into the first unit and pivots together with the first unit; the second bearing plate extends into the second unit and pivots together with the second unit.

Preferably, the limiting structure further comprises a housing, and the first rotor and the second rotor are both arranged in the cavity inside the housing; the first rotating shaft and the second rotating shaft respectively penetrate out of the shell from two opposite ends of the shell.

Preferably, the housing includes a first housing and a second housing that are interlocked in an axial direction of the first rotor and the second rotor; a first thrust bearing is arranged between one end of the first rotor, which is far away from the second rotor, and the first shell; and a second thrust bearing is arranged between one end of the second rotor, which is far away from the first rotor, and the second shell.

Preferably, a positioning rotating shaft is arranged on the end face of the first rotor opposite to the second rotor; a positioning hole is formed in the end face of the second rotor opposite to the first rotating shaft; the positioning rotating shaft extends into the positioning hole; and a nylon sleeve is arranged between the positioning rotating shaft and the hole wall of the positioning hole.

Compared with the prior art, the tablet personal computer has the beneficial effects that: according to the invention, the limiting structure is arranged in the preset area, so that the first unit and the second unit can only be bent within the range of the bending angle allowed by the limiting structure, and the allowed bending angle is an angle which is not capable of causing the flexible screen to be broken or generating a crease which can not be repaired forever due to bending, thereby limiting the excessive bending of the flexible screen and preventing the flexible screen from being damaged due to the excessive bending.

Drawings

Fig. 1 is a schematic structural diagram of a tablet computer according to an embodiment of the present invention.

Fig. 2 is an enlarged view of a portion B of fig. 1.

Fig. 3 is a cross-sectional view taken along line a-a of fig. 1 (where the flexible screen is not bent).

Fig. 4 is a sectional view taken along line a-a of fig. 1 (in which the first unit is at an angle of 90 deg. to the second unit).

Fig. 5 is a sectional view taken along line a-a of fig. 1 (in which the first unit is at an angle of 60 ° to the second unit).

In the figure:

10-a first rotor; 11-a first shaft; 111-a first carrier plate; 12-a projection; 13-positioning the rotating shaft; 14-nylon sleeve; 20-a second rotor; 21-a second rotating shaft; 211-a second carrier plate; 22-a limiting groove; 23-dishing; 30-spring top bead assembly; 31-a mobile body; 32-a spring; 33-top bead; 40-a housing; 41-a first housing; 411 — first thrust bearing; 42-a second housing; 421-a second thrust bearing; 50-a magnet; 100-a first cell; 200-a second cell; 300-limit structure.

Detailed Description

In order to make the technical solutions of the present invention better understood, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 to 5, an embodiment of the present invention discloses a tablet computer, which includes system hardware and a flexible screen; wherein the system hardware may be embedded in the flexible screen or disposed within a flexible housing 40 for mounting the flexible screen. The flexible screen of the tablet computer of the present invention has a preset region for bending (the preset region is implemented by providing a special structure in a region to be bent or by changing the material of the flexible screen in the region to be bent at the stage of designing the flexible screen), the preset region divides the flexible screen into the first unit 100 and the second unit 200, and after the flexible screen is bent in the preset region, the first unit 100 and the second unit 200 may have respective functions, for example, the first unit 100 serves as a display device and the second unit 200 serves as an input device. The key point of the present invention is that a position limiting structure 300 is disposed in the flexible screen corresponding to the predetermined region, and the position limiting structure 300 is used to limit the bending angle range between the first unit 100 and the second unit 200, so as to prevent the flexible screen from being broken or generating a crease that cannot be repaired forever due to excessive bending between the first unit 100 and the second unit 200.

It should be noted that: the bending angle range between the first unit 100 and the second unit 200 should be determined such that, as shown in fig. 3, when the flexible screen is not bent, the included angle between the first unit 100 and the second unit 200 is 180 °, and at this time, the bending angle between the first unit 100 and the second unit 200 is 0 °; after the flexible screen is bent, as shown in fig. 4 and 5, the angle between the first unit 100 and the second unit 200 is X °, and the bending angle between the first unit 100 and the second unit 200 is 180 ° -X °, that is, the angle between the first unit 100 and the second unit 200 is complementary to the bending angle.

According to the above, since the limiting structure 300 is disposed in the preset area, the limiting structure 300 enables the first unit 100 and the second unit 200 to be bent only within the range of the bending angle allowed by the limiting structure 300, and the allowed bending angle is an angle that does not cause the flexible screen to be broken or generate a crease that cannot be repaired forever due to bending, so as to limit excessive bending of the flexible screen and prevent the flexible screen from being damaged due to excessive bending.

The bending angle ranges of the first unit 100 and the second unit 200 need to be set by comprehensively considering the material and thickness of the flexible screen and the requirement of a user on the included angle between the first unit 100 and the second unit 200 of the flexible screen. In a preferred embodiment of the present invention, the bending angle between the first unit 100 and the second unit 200 is made to be in the range of 0 to 120. That is, the maximum bending angle between the first unit 100 and the second unit 200 is 120 °, or the minimum included angle between the first unit 100 and the second unit 200 is 60 °. The bending angle range can meet the requirement of a user on the use of a tablet computer similar to a notebook computer, and the flexible screen is not damaged due to excessive bending.

The type and structure of the limiting structure 300 may be various, for example, an angle sensor may be used to cooperate with a locking mechanism to limit, and specifically, when the angle sensor detects that the bending angle between the first unit 100 and the second unit 200 reaches the maximum allowable bending angle, the locking mechanism is controlled to lock the first unit 100 and the second unit 200 so as to prevent the first unit 100 and the second unit 200 from rotating. In a preferred embodiment of the present invention, the first unit 100 and the second unit 200 are mechanically limited, i.e. a special mechanical structure is used to limit the bending angle between the first unit 100 and the second unit 200. Specifically, as shown in fig. 2 to 5, the limiting structure 300 includes a first rotor 10 and a second rotor 20 which are coaxially and relatively rotatably disposed; the first rotor 10 is directly or indirectly connected to the first unit 100 so that the first rotor 10 rotates with the first unit 100 when the flexible screen is bent, and the second rotor 20 is directly or indirectly connected to the second unit 200 so that the second rotor 20 rotates with the second unit 200 when the flexible screen is bent; an arc-shaped limiting groove 22 extending in the circumferential direction is formed in the second rotor 20, and a protruding portion 12 extending into the limiting groove 22 is formed in the first rotor 10; when the first rotor 10 and the second rotor 20 relatively rotate, the protruding portion 12 slides along the limiting groove 22 and is limited by both end portions of the limiting groove 22. In this way, as shown in fig. 3 and 5, when the bending angle between the first unit 100 and the second unit 200 is switched to two limit angles (for example, to 120 ° and 0 °), the protruding portions 12 are respectively blocked by the two end portions of the stopper groove 22, so that the first unit 100 and the second unit 200 cannot be bent further, thereby limiting the bending angle between the first unit 100 and the second unit 200. The limiting groove 22 may be disposed at a plurality of positions of the second rotor 20, and correspondingly, the protruding portion 12 may be disposed at a plurality of positions of the first rotor 10 in a manner matching with the limiting groove 22, preferably, as shown in fig. 2 to 5, the first rotor 10 and the second rotor 20 are both in a cylindrical shape, and the limiting groove 22 is disposed on an end surface of one end of the second rotor 20 opposite to the first rotor 10; the projection 12 is formed on an end surface of one end of the first rotor 10 opposite to the second rotor 20.

In order to make the first and second

columnar rotors

10 and 20 compact and integral, as shown in fig. 3 to 5, the protruding portion 12 is an arc-shaped strip protruding from the end of the first rotor 10 and fitting into the retaining groove 22, and the retaining groove 22 penetrates the cylindrical surface of the second rotor 20. When the lath extends into the limiting groove 22, the inner side surface of the lath is attached to the groove bottom of the limiting groove 22, and the outer side surface of the lath is flush with the cylindrical surface of the second rotor 20. In this way, when the first rotor 10 and the second rotor 20 rotate relatively, the protrusion 12 does not protrude radially from the second rotor 20 during sliding in the limiting groove 22, so that the first rotating shaft 11 and the second rotating shaft are compactly matched, and an integral appearance is formed.

When the first unit 100 and the second unit 200 need to be rotated to two limit bending angles, for example, when the first unit 100 and the second unit 200 need to be bent to 120 ° or 0 °, the force applied by the user often cannot be accurately bent in place, so that the first unit 100 and the second unit 200 are easily rotated to the limit positions and the user still applies the force, and the limiting structure 300 is easily damaged, for example, the protruding portion 12 slides to the end of the limiting groove 22 and then slides continuously to slide out of the limiting groove 22.

In order to solve the above problem, in a preferred embodiment of the present invention, as shown in fig. 3 to 5, the projection 12 has a first end and a second end in a rotational direction along the stopper groove 22; the first end of the bulge part 12 and the end of the limiting groove 22 corresponding to the first end are respectively provided with magnets 50 with opposite poles; the second end of the protruding portion 12 and the end of the limiting groove 22 corresponding to the second end are respectively provided with magnets 50 with opposite poles. Thus, when the first unit 100 and the second unit 200 approach to the two extreme bending angles through relative rotation, the two magnets 50 with opposite poles generate relative attraction forces, and the closer the rotation angle of the first unit 100 and the second unit 200 approaches to the extreme bending angle, the greater the attraction force between the magnets 50.

As can be seen from the above description, as shown in fig. 3 and 5, when the user applies force to rotate the first unit 100 and the second unit 200 and approach the limit bending angle, an attractive force is generated between the magnets 50 with opposite poles, and the attractive force and the force applied by the user rotate the first unit 100 and the second unit 200 together towards the limit bending angle, so that after the attractive force is generated by the magnets 50, the force required by the user for the first unit 100 and the second unit 200 is reduced, at this time, the user can sense that the first unit 100 and the second unit 200 will rotate the limit bending angle, and when the two magnets 50 with opposite poles approach to the limit bending angle, the first unit 100 and the second unit 200 rotate only by the attractive force therebetween, at this time, the user has a falling force sense, which gives the user an early warning of stopping the application of force, and the user therefore stops the application of force, and at the same time, the first unit 100 and the second unit 200 automatically rotate to the limit bending angle, thereby preventing the user from damaging the stopper structure 300 by applying a force continuously.

In order to maintain the first unit 100 and the second unit 200 at any one of the two extreme bending angles when the units are rotated to the rotation angle, as shown in fig. 2 and 3, the limiting structure 300 further comprises a spring ball assembly 30; the first rotor 10 is provided with a containing groove therein; the spring top ball assembly 30 comprises a moving body 31 which is arranged in the accommodating groove and can move along the axial direction of the first rotor 10, a top ball 33 which moves along with the moving body 31 and protrudes out of the end face of the first rotor 10 opposite to the second rotor 20, and a spring 32 which is arranged in the accommodating groove and is used for pushing the moving body 31 towards the direction of the second rotor 20; a ring of recesses 23 are formed on the end surface of the second rotor 20 opposite to the first rotor 10, and when the first rotor 10 and the second rotor 20 rotate relatively, the top beads 33 are sequentially embedded in the recesses 23. In this way, when the user applies force to rotate the first unit 100 and the second unit 200 to a certain angle, the top ball 33 slides into the corresponding recess 23, and the cooperation of the top ball 33 and the recess 23 enables the first unit 100 and the second unit 200 to be maintained at the rotated angle when no force is applied to the first unit 100 and/or the second unit 200.

In a preferred embodiment of the present invention, as shown in fig. 1 and 2, the first rotor 10 and the second rotor 20 are indirectly connected with the first unit 100 and the second unit 200, respectively, and specifically, the limiting structure 300 further includes a first rotating shaft 11 and a second rotating shaft 21; the first rotor 10 is fixed on the first rotating shaft 11; the second rotor 20 is fixed on the second rotating shaft 21; a first bearing plate 111 is arranged on the first rotating shaft 11, and a second bearing plate 211 is arranged on the second rotating shaft 21; the first bearing plate 111 extends into the first unit 100 and pivots together with the first unit 100; the second carrier plate 211 extends into the second unit 200 and pivots together with the second unit 200. In this embodiment, the first carrier plate 111 and the second carrier plate 211 are elastic bodies with gradually changed rigidity, and the rigidity of the first carrier plate 111 and the second carrier plate 211 is gradually reduced in a direction radially away from the first rotor 10 and the second rotor 20, so that the rigidity change rule of the two carrier plates is consistent with the rigidity change rule of the flexible screen (the rigidity of the flexible screen away from the preset area is smaller), so that the deformation rule of the carrier plates is consistent with the deformation rule of the flexible screen.

In order to prevent the first rotor 10 and the second rotor 20 from being exposed, as shown in fig. 2, the limiting structure 300 further includes a housing 40, and the first rotor 10 and the second rotor 20 are both disposed in a cavity inside the housing 40; the first and second rotating

shafts

11 and 21 respectively penetrate the housing 40 from opposite ends of the housing 40. Specifically, the housing 40 includes a first housing 41 and a second housing 42 that are snapped in the axial direction of the first rotor 10 and the second rotor 20; a first thrust bearing 411 is arranged between one end of the first rotor 10 far away from the second rotor 20 and the first shell 41; a second thrust bearing 421 is disposed between one end of the second rotor 20 away from the first rotor 10 and the second housing 42. In this way, the first rotor 10 and the second rotor 20 are accommodated in the housing 40, thereby preventing the flexible screen from being contaminated by impurities generated by abrasion and the like of the first rotor shaft 11 and the second rotor 20. In the present embodiment, the first thrust bearing 411 functions to: on the one hand, the resistance generated by the relative rotation between the first rotor 10 and the second rotor 20 is reduced; on the other hand, the first rotor 10 is prevented from being separated from the second rotor 20 in the axial direction.

In order to make the first rotor 10 and the second rotor 20 rotate coaxially better, as shown in fig. 2, a positioning rotating shaft 13 is arranged on the end surface of the first rotor 10 opposite to the second rotor 20; the end face of the second rotor 20 opposite to the first rotating shaft 11 is provided with a positioning hole; the positioning rotating shaft 13 extends into the positioning hole; a nylon sleeve 14 is arranged between the positioning rotating shaft 13 and the hole wall of the positioning hole. In this way, the positioning rotating shaft 13 rotates in the positioning hole, so that the first rotor 10 and the second rotor 20 strictly perform coaxial rotation. In this embodiment, the nylon sleeve 14 functions to: for providing a certain damping of the relative rotation of the first rotor 10 and the second rotor 20.

The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the scope of the present invention is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present invention, and such modifications and equivalents should also be considered as falling within the scope of the present invention.

Claims

1. A tablet personal computer comprises a flexible screen, wherein the flexible screen can be bent along a preset area to form a first unit and a second unit, and the tablet personal computer is characterized by further comprising a limiting structure embedded in the preset area of the flexible screen, wherein the limiting structure is used for limiting the bending angle range between the first unit and the second unit, and comprises a first rotor and a second rotor which are coaxially and relatively rotatably arranged;

the first rotor is connected to the first unit and can rotate with the first unit, and the second rotor is connected to the second unit and can rotate with the second unit; the second rotor is provided with an arc-shaped limiting groove extending in the circumferential direction, a protruding part extending into the limiting groove is formed on the first rotor, when the first rotor and the second rotor rotate relatively, the protruding part slides along the limiting groove, and two ends of the limiting groove prevent the protruding part from sliding out of the limiting groove;

the protruding part is provided with a first end and a second end along the rotation direction of the limiting groove; magnets with opposite poles are arranged at the first end of the protruding part and the end, corresponding to the first end, of the limiting groove respectively; and magnets with opposite poles are respectively arranged at the second end of the protruding part and one end of the limiting groove corresponding to the second end.

2. The tablet computer of claim 1, wherein the bend angle between the first unit and the second unit is in the range of 0 ° -120 °.

3. The tablet personal computer of claim 1, wherein the first rotor and the second rotor are both cylindrical, and the end face of one end of the second rotor, which is opposite to the first rotor, is provided with the limiting groove; the projection is formed on an end surface of an end of the first rotor opposite to the second rotor.

4. The tablet personal computer of claim 3, wherein the protrusion is an arc-shaped slat adapted to the limiting groove, the limiting groove penetrates through the cylindrical surface of the second rotor, when the slat extends into the limiting groove, the inner side surface of the slat is attached to the groove bottom of the limiting groove, and the outer side surface of the slat is flush with the cylindrical surface of the second rotor.

5. The tablet computer of claim 1, wherein the retaining structure further comprises a spring top bead assembly; an accommodating groove is formed in the first rotor; the spring ejecting ball assembly comprises a moving body which is arranged in the accommodating groove and can move along the axial direction of the first rotor, an ejecting ball which moves along with the moving body and protrudes out of the end face of the first rotor opposite to the second rotor, and a spring which is arranged in the accommodating groove and used for pushing the moving body towards the direction of the second rotor; a circle of recess is formed on the end face of the second rotor opposite to the first rotor, and when the first rotor and the second rotor rotate relatively, the top ball is embedded into the recess so that the first rotor and the second rotor are kept at a relatively rotating angle.

6. The tablet computer of claim 1, wherein the limiting structure further comprises a first rotating shaft and a second rotating shaft; the first rotor is fixed on the first rotating shaft; the second rotor is fixed on the second rotating shaft; a first bearing plate is arranged on the first rotating shaft, and a second bearing plate is arranged on the second rotating shaft; the first bearing plate extends into the first unit and pivots together with the first unit; the second bearing plate extends into the second unit and pivots together with the second unit.

7. The tablet computer of claim 6, wherein the limiting structure further comprises a housing, and the first rotor and the second rotor are both disposed in a cavity inside the housing; the first rotating shaft and the second rotating shaft respectively penetrate out of the shell from two opposite ends of the shell.

8. The tablet computer of claim 7, wherein the housing comprises a first housing and a second housing that are snapped in opposition in an axial direction of the first rotor and the second rotor; a first thrust bearing is arranged between one end of the first rotor, which is far away from the second rotor, and the first shell; a second thrust bearing is arranged between one end of the second rotor, which is far away from the first rotor, and the second shell; a positioning rotating shaft is arranged on the end face of the first rotor opposite to the second rotor; a positioning hole is formed in the end face of the second rotor opposite to the first rotating shaft; the positioning rotating shaft extends into the positioning hole; and a nylon sleeve is arranged between the positioning rotating shaft and the hole wall of the positioning hole.