CN113864323A

CN113864323A - Folding device and electronic equipment

Info

Publication number: CN113864323A
Application number: CN202010622198.2A
Authority: CN
Inventors: 罗洋
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-12-31
Also published as: WO2022001306A1

Abstract

The application relates to the technical field of electronic equipment, in particular to a folding device and electronic equipment. The folding device includes: the rotating shaft assembly extends along the width direction of the folding device; the displacement compensation assembly comprises a steering piece, a limiting bearing frame and a movable bearing frame, the steering piece and the limiting bearing frame can rotate relative to the rotating shaft assembly, at least part of the steering piece is connected with the movable bearing frame, the movable bearing frame is connected with the limiting bearing frame, and the movable bearing frame can move relative to the limiting bearing frame along the length direction of the folding device; wherein, in the process that the steering part revolves the rotation of rotation axis subassembly, can drive and remove the bolster and for spacing bolster length direction motion along folding device.

Description

Folding device and electronic equipment

Technical Field

The application relates to the technical field of electronic equipment, in particular to a folding device and electronic equipment.

Background

In recent years, the new trend of folding into electronic products has enabled not only new models but also larger display views with smaller volumes. The folded form can be roughly classified into: outward folding, inward folding, curling and the like. The folding-in mode is more difficult than other two modes, the curling radius of the flexible screen is smaller in the folding-in mode, the screen is easier to be lifted and damaged, and the design requirement of the rotating shaft in the folding-in mode is higher.

Disclosure of Invention

The application provides a folding device and electronic equipment, reduces and makes the screen receive the risk of dragging or the extrusion of casing at the casing rotation in-process.

The embodiment of the application provides a folding device, folding device includes:

a rotating shaft assembly extending in a width direction of the folding device;

the displacement compensation assembly comprises a steering piece, a limiting bearing frame and a movable bearing frame, the steering piece and the limiting bearing frame can rotate relative to the rotating shaft assembly, at least part of the steering piece is connected with the movable bearing frame, the movable bearing frame is movably connected with the limiting bearing frame, and the movable bearing frame can move relative to the limiting bearing frame along the direction of the length of the folding device;

and in the process that the steering piece rotates around the rotating shaft assembly, the movable bearing frame can be driven to move along the length direction of the folding device relative to the limiting bearing frame.

In the embodiment of the application, the folding device is used for folding or unfolding the electronic equipment, the electronic equipment comprises a machine shell and a screen, the machine shell is positioned on two sides of the rotating shaft assembly, and the movable bearing frame is connected with the machine shell. The shell can be driven to move relative to the screen through the displacement compensation component. Specifically, electronic equipment expandes the in-process, and the steering part rotates around pivot subassembly and drives and remove the length direction motion that holds the frame along folding device, removes the casing that holds the frame and drive pivot subassembly both sides and removes towards the centre, makes the casing of both sides be close to gradually to the screen is opening the design demand of the constant length in-process intermediate level, makes electronic equipment in folding process, and the screen is not compressed. In the folding process of the electronic equipment, the steering part rotates around the rotating shaft assembly and drives the movable bearing frame to move along the length direction of the folding device, the movable bearing frame drives the machine shells on two sides of the rotating shaft assembly to move towards two sides, the machine shells on two sides are gradually far away, the design requirements of the screen on the constant length of the middle layer in the folding process are matched, and the screen is not stretched even if the electronic equipment is unfolded. The movement change track of the shell is designed to be close to the state that the screen is naturally opened or folded, the risk that the screen is dragged or extruded by the shell in the rotation process of the shell is reduced, and the service life of the screen is prolonged.

In one possible design, the steering member comprises a first steering member and a second steering member which are connected, and the first steering member is rotatably connected with the rotating shaft assembly;

in the process that the first steering piece rotates around the rotating shaft assembly, the second steering piece can be driven to move along the length direction of the folding device.

The embodiment of the application converts the rotation of the first steering piece around the rotating shaft assembly into the second steering piece to move along the length direction of the folding device, and the second steering piece is connected with the movable bearing frame to drive the movable bearing frame to move along the length direction of the folding device.

In one possible design, the steering member further comprises a steering sleeve, the steering sleeve is fixed to the rotating shaft assembly, and the first steering member is in spiral fit with the steering sleeve;

in the process that the first steering piece rotates relative to the steering sleeve, the first steering piece can move relative to the steering sleeve along the width direction of the folding device so as to drive the second steering piece to move along the length direction of the folding device.

In this application embodiment, first steering spare is including turning to portion and connecting portion, turns to the portion and turns to the cover cooperation, and connecting portion are connected with the second steering spare, turns to the portion and turns to the cover and be equipped with matched with spiral to can turn to the cover relatively through spiral cooperation when making first steering spare rotate along with the pivot subassembly and remove, first steering spare can be followed folding device's width direction motion, first steering spare drives at least part edge of second steering spare through connecting portion folding device's width direction motion.

In one possible design, the limiting bearing frame is provided with a first limiting hole and a second limiting hole along the thickness direction of the folding device, the first limiting hole extends along the width direction of the folding device, and the second limiting hole extends along the length direction of the folding device;

the second steering piece comprises a first part and a second part, at least part of the first part is positioned in the first limiting hole and can move along the width direction of the folding device relative to the first limiting hole, and at least part of the second part is positioned in the second limiting hole and can move along the length direction of the folding device relative to the second limiting hole;

the second portion is connected with the mobile carrier.

In this application embodiment, when connecting portion drove the width direction motion of first portion along folding device, through the motion direction of the spacing hole restriction second portion of second, made the length direction motion of second portion along folding device to make the second portion drive and remove the length direction Y motion that holds the frame along folding device.

In one possible design, the mobile bearing frame is provided with an avoiding hole for accommodating the first part so as to avoid the movement of the first part relative to the mobile bearing frame. Wherein, the extending direction of the avoiding hole is the moving direction of the first part relative to the movable bearing frame.

In one possible design, the displacement compensation assembly further comprises a guide part and a guide matching part, and the guide part and the guide matching part can move relatively along the length direction of the folding device;

one of the guide part and the guide matching part is arranged on the movable bearing frame, and the other is arranged on the limiting bearing frame.

In this application embodiment, play the direction to the motion that removes the relative spacing bearer of bearer through setting up guide part and direction cooperation portion.

In one possible design, the guide part comprises a limit ball, and the guide fitting part comprises a first limit guide rail, and the first limit guide rail is in rolling fit with the limit ball.

In this application embodiment, along folding device's width direction, spacing ball is installed in spacing bolster both ends, and first spacing guide rail and spacing ball roll cooperation, first spacing guide rail are installed in removal bolster. The limiting guide block can compress the movable bearing frame and the limiting bearing frame, the movable bearing frame moves on the limiting bearing frame along a straight line, the moving distance is limited, the friction force is large, and sliding friction can be replaced by rolling friction by replacing part of the limiting guide block with limiting balls, so that the friction force is reduced.

In one possible design, the guide part comprises a limiting roller, the guide matching part comprises a first limiting guide rail, and the first limiting guide rail is in rolling fit with the limiting roller;

the displacement compensation assembly further comprises a limiting roller, and the limiting roller is installed between the limiting bearing frame and the movable bearing frame and is in rolling connection with the limiting bearing frame and the movable bearing frame.

In the embodiment of the application, along the width direction of the folding device, the limiting rollers are arranged at two ends of the limiting bearing frame, the first limiting guide rail is in rolling fit with the limiting rollers, and the first limiting guide rail is arranged on the movable bearing frame. The limiting roller is positioned between the movable bearing frame and the limiting bearing frame and is in rolling fit with the movable bearing frame. The limit rollers are added around the limit guide block, so that sliding friction force can be changed into rolling friction force, the friction force of the mechanism is effectively reduced, and the mechanism moves more smoothly.

In one possible design, the guide portion includes a second limit rail, and the guide engagement portion includes a second sliding groove that is slidably engaged with the second limit rail.

In this application embodiment, along folding device's width direction, the second spout is located the both ends of spacing bearer, and second spout and the spacing slide rail sliding fit of second reduce the removal and bear the frictional force between the frame and the spacing bearer.

In one possible design, the guide part comprises a limit guide block, and the guide matching part comprises a first sliding groove which extends along the length direction of the folding device;

the limiting guide block can move along the first sliding groove, and at least part of the limiting guide block can penetrate through the first sliding groove to be connected with the limiting bearing frame.

In this application embodiment, the guide part can include a plurality of spacing guide blocks, and the correspondence of direction cooperation portion includes a plurality of first spouts, and first spout sets up in removing the bearer, and a plurality of spacing guide blocks can slide and at least part can pass first spout and spacing bearer be connected along first spout to connect spacing bearer and removal bearer. Through the sliding fit of the limiting guide block and the first sliding groove, the guide and limiting effects are achieved on the movement of the movable bearing frame.

In one possible design, the folding device further comprises a support mechanism;

the supporting mechanism comprises a fifth rotating shaft and a supporting assembly, the supporting assembly can rotate around the fifth rotating shaft, and the fifth rotating shaft is fixedly connected with the rotating shaft assembly.

In the embodiment of the application, the supporting mechanism is connected with the casing, and along the thickness direction of the folding device, the supporting mechanism is arranged below the screen to support the screen. In the folding or unfolding process of the electronic equipment, the supporting mechanism can support the screen when the screen rotates and restrain the arc length change when the screen rotates. When the screen is in a 0-degree state, at least part of the supporting mechanism is tangent to the screen to limit the water drop shape of the screen after being folded, the size of the water drop shape formed by the screen can be changed according to the limitation of the supporting mechanism on the folded screen, when the screen is in a 180-degree state, the supporting mechanism has no constraint force on the screen, the supporting mechanism is used for supporting the screen, and the risk that the screen fingers press the screen to be sunken when touching the screen is reduced.

In one possible design, the support assembly includes a first support member and a plurality of second support members, the first support member extends along the width direction of the folding device, and the first support member is rotatably connected with the fifth rotating shaft;

the plurality of second supporting pieces are arranged at intervals along the width direction of the folding device, extend along the width direction of the folding device and are connected with the first supporting pieces.

In the embodiment of the application, in the unfolding or folding process of the screen, the first supporting piece and the second supporting piece rotate along with the screen, and the screen is supported by the first supporting piece and the second supporting piece and the change of the arc length of the screen during rotation is restrained; when the screen fold condition, first support piece is in fold condition with the second support piece, and second support piece and screen butt restrict the size that the screen folds into the water droplet shape through the second backup pad, and first support piece is equipped with the cambered surface, and first support piece passes through the cambered surface and tangent with the at least partial contact of screen.

In one possible design, the support mechanism further comprises a connecting rod, the connecting rod is provided with an oblong hole, and the oblong hole extends along the length direction of the folding device;

at least part of the second support member is positioned in the oblong hole and is capable of moving relative to the oblong hole, so that the connecting rod can move relative to the second support member along the length direction of the folding device.

In the embodiment of the application, in the process of pushing the casing to expand, the casing drives the second supporting piece to rotate around the fifth rotating shaft through the connecting rod, and the casing drives the connecting rod to move towards the direction close to the second supporting piece as the casing contracts in the rotating process; in the process of pushing the machine shell to be folded, the machine shell drives the second supporting piece to rotate around the fifth rotating shaft through the connecting rod, and the machine shell drives the connecting rod to move towards the direction far away from the second supporting piece due to the fact that the machine shell stretches out in the rotating process.

An embodiment of the present application further provides an electronic device, where the electronic device includes:

a housing comprising a first housing and a second housing;

a screen mounted to the housing;

the folding device is arranged on the shell, and the folding assembly is the folding device.

In one possible design, the first casing and the second casing are respectively connected with two moving bearing frames of the displacement compensation assembly;

the folding device further comprises a supporting mechanism, the supporting mechanism comprises connecting rods, and the first machine shell and the second machine shell are connected with the two connecting rods respectively.

In a possible design, baffles are arranged at two ends of the first casing and the second casing along the width direction of the folding device;

when the electronic equipment is in an unfolded state, the baffle is higher than the screen along the thickness direction of the folding device;

when the electronic equipment is in a folded state, the baffle of the first casing is attached to the baffle of the second casing.

The embodiment of the application shelters from the opening of electronic equipment side water droplet form through the baffle, and after electronic equipment is folded, the whole machine outward appearance that makes electronic equipment does not have the opening gap to prevent that impurity from getting into through water droplet form opening, improve the security of screen.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

Fig. 1 is a schematic diagram illustrating an expanded state of an electronic device according to an embodiment of the present disclosure;

fig. 2 is a schematic folded state diagram of an electronic device provided in an embodiment of the present application;

FIG. 3 is an enlarged view of a portion A of FIG. 2;

FIG. 4 is a schematic structural diagram of the displacement compensation assembly of the electronic device in a folded state;

FIG. 5 is a schematic structural diagram of a displacement compensation assembly of the electronic device in an unfolded state;

fig. 6 is a sectional view of the electronic apparatus in a folded state;

FIG. 7 is an enlarged view of a portion F of FIG. 6;

FIG. 8 is an exploded view of the spindle assembly;

fig. 9 is a partial enlarged view of portion B of fig. 8;

FIG. 10 is a schematic view showing the connection of the displacement compensation assembly, the rotation shaft assembly and the support assembly;

FIG. 11 is a schematic structural diagram of a displacement compensation assembly;

FIG. 12 is a schematic structural view of the mobile carrier;

FIG. 13 is a schematic structural view of a position-limiting shelf;

FIG. 14 is a schematic view of the connection of the position limiting bracket to the second steering member;

FIG. 15 is a schematic structural view of the first steering member;

FIG. 16 is a schematic view of the structure of the steering sleeve;

FIG. 17 is an analysis diagram of a rotary steering analytic expression;

FIG. 18 is an analysis diagram of a horizontal steering analytic expression;

FIG. 19 is a displacement scatter plot of the screen rotation start point and the case force application point from the case rotation centerline;

fig. 20 is a diagram of a rotation trace of the screen;

fig. 21 is a sectional view of the electronic device in an unfolded state;

fig. 22 is a partial enlarged view of portion C of fig. 21;

fig. 23 is a cross-sectional view of another perspective of the electronic device in a folded state;

fig. 24 is a partial enlarged view of portion D of fig. 23;

FIG. 25 is a schematic structural view of the support mechanism;

fig. 26 is a partial enlarged view of portion E of fig. 25;

FIG. 27 is a schematic view of the center of rotation of the screen, housing and support mechanism;

FIG. 28 is an exploded view of the displacement compensation assembly in the first embodiment;

FIG. 29 is an exploded view of the displacement compensation assembly in a second embodiment;

FIG. 30 is an exploded view of a displacement compensation assembly in a third embodiment;

fig. 31 is an exploded view of a displacement compensation assembly in a fourth embodiment.

Reference numerals:

1-machine shell, 11-first machine shell, 111-baffle and 12-second machine shell;

2-screen;

3-rotating shaft assembly, 31-first rotating shaft, 32-second rotating shaft, 33-third rotating shaft, 34-fourth rotating shaft and 35-gear;

4-displacement compensation component, 41-steering component, 411-first steering component, 411 a-steering part, 411 b-connecting part, 412-steering sleeve, 413-second steering component, 413 a-first part, 413 b-second part, 42-limit bearing frame, 421-first limit hole, 422-second limit hole, 423-second sliding groove, 43-moving bearing frame, 431-avoiding hole, 432-first sliding groove, 44-limit guide block, 45-limit ball, 46-first limit guide rail, 47-limit roller, 48-limit roller and 49-second limit guide rail;

5-a support mechanism, 51-a support assembly, 511-a first support, 512-a second support, 513-a connecting rod, 513 a-a long circular hole and 52-a fifth rotating shaft;

x-width direction Y-length direction Z-thickness direction

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

Detailed Description

For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.

It should be clear that the described embodiments are only a few embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In one embodiment, the present application is described in further detail below with reference to specific embodiments and accompanying drawings.

The embodiment of the application provides an electronic equipment, and electronic equipment can fold, realizes bigger demonstration view with less volume, and when folding electronic equipment, the screen is the water droplet naturally. The electronic equipment can be a mobile phone, a tablet computer, a notebook, an intelligent display screen and the like.

The shell structure is complicated among this electronic equipment's the current structure, and too much occupation inner space influences the arrangement of circuit board and key device, is unsuitable volume production to lead to complete machine thickness to be thicker, be unfavorable for realizing electronic equipment's miniaturization and frivolousization. The electronic equipment has a drop-shaped opening from the side after being folded, so that the appearance is influenced, and the risk of scratching the screen due to the entering of impurities from the opening exists. Electronic equipment includes screen, pivot and casing, and the screen mounting is in the casing, and the casing sets up in the pivot both sides, and both sides casing revolutes the pivot and rotates, and electronic equipment is folding or expand the in-process, and the casing can extrude or drag the screen, influences life.

In order to solve the above technical problem, an embodiment of the present application provides an electronic device, which is foldable, and the specific structure of the electronic device is as follows.

In the embodiments of the present application, the "longitudinal direction Y", the "width direction X", and the "thickness direction Z" are based on the orientation of the electronic apparatus in the unfolded state. As shown in fig. 1, when the electronic device is in the unfolded state, the thickness direction Z is a direction in which a side of the electronic device having the smallest dimension is located, and the thickness direction Z is substantially perpendicular to a plane in which the length direction Y and the width direction X are located; in a plane perpendicular to the thickness direction Z, the length direction Y refers to a direction in which a side of the electronic device having a longer length is located (or a direction in which a side of the shorter length is located), and the width direction X refers to a direction in which a side of the electronic device having a shorter length is located (or a direction in which a side of the longer length is located).

As shown in fig. 1 to 3, the electronic device includes a screen 2, a housing 1, and a folding device, wherein the screen 2 is a flexible screen and can be folded, and the screen 2 is connected to the housing 1. The folding device comprises a rotating shaft component 3, the machine shell 1 is divided into a first machine shell 11 and a second machine shell 12 along the length direction Y of the folding device, and the first machine shell 11 and the second machine shell 12 can rotate through the rotating shaft component 3 in the folding or unfolding process of the electronic equipment.

In the embodiment of the present application, the first housing 11 and the second housing 12 rotate around the rotating shaft assembly 3. As shown in fig. 8 and 9, the rotating shaft assembly 3 may include a first rotating shaft 31, a second rotating shaft 32, a third rotating shaft 33 and a fourth rotating shaft 34, wherein the first rotating shaft 31, the second rotating shaft 32, the third rotating shaft 33 and the fourth rotating shaft 34 are all sleeved with a gear 35, and the gears 35 of the first rotating shaft 31 and the second rotating shaft 32, the second rotating shaft 32 and the third rotating shaft 33, the third rotating shaft 33 and the fourth rotating shaft 34 are engaged with each other, so that the first rotating shaft 31 and the fourth rotating shaft 34 rotate synchronously and in opposite directions. The first rotating shaft 31 is connected with the first housing 11, the fourth rotating shaft 34 is connected with the second housing 12, and the first housing 11 and the second housing 12 synchronously move through the synchronous and reverse rotation of the first rotating shaft 31 and the fourth rotating shaft 34.

The rotating shaft assembly 3 may include not only the four rotating shafts but also an even number of rotating shafts such as six rotating shafts and eight rotating shafts, and it is sufficient that two rotating shafts connected to the first housing 11 and the second housing 12 rotate synchronously and reversely.

As shown in fig. 1, the electronic device is in an unfolded state, and the angle of the screen 2 is 180 °. The first housing 11 and the second housing 12 may be provided with a barrier 111 at both ends thereof in a width direction X of the folder of the electronic device, and the barrier 111 may extend higher than the screen 2 in a thickness direction Z of the folder of the electronic device.

As shown in fig. 2 and 3, the electronic device is folded, and the angle of the screen 2 is 0 °. At this time, the first housing 11 is attached to the baffle 111 of the second housing 12, the baffle 111 shields the drop-shaped opening on the side of the electronic device, and after the electronic device is folded, the whole appearance of the electronic device has no opening gap, so that impurities are prevented from entering through the drop-shaped opening, and the safety of the screen 2 is improved.

As shown in fig. 4 and 5, the folding device further includes a plurality of displacement compensation assemblies 4, along the length direction Y of the folding device, the displacement compensation assemblies 4 are disposed on two sides of the rotating shaft assembly, and the displacement compensation assemblies 4 on two sides are respectively connected with the first housing 11 and the second housing 12. In the process of rotating the first housing 11 and the second housing 12, the displacement compensation assembly 4 drives the first housing 11 and the second housing 12 to move relative to the screen 2. Specifically, in the process of the expansion of the housing, the first housing 11 and the second housing 12 are displaced relative to the screen 2, that is, the first housing 11 and the second housing 12 move towards the middle to gradually approach each other, so as to match the design requirement of the screen 2 that the middle layer is constant in the process of opening, that is, the screen 2 is not compressed in the process of folding the electronic device. In the process of folding the casing, the first casing 11 and the second casing 12 displace relative to the screen 2, namely the first casing 11 and the second casing 12 move towards the outer side respectively, so that the first casing 11 and the second casing 12 are gradually far away from each other to match the design requirement of the screen 2 for the constant length of the middle layer in the folding process, namely the screen 2 is not stretched in the unfolding process of the electronic equipment. Therefore, the movement change track of the casing 1 is designed to be close to the state that the screen 2 is naturally opened or folded by the displacement compensation component 4, so that the risk that the screen 2 is pulled or extruded by the casing 1 in the rotation process of the casing 1 is reduced, and the service life of the screen 2 is prolonged.

As shown in fig. 10 and 11, the displacement compensation assembly 4 includes a steering member 41, a limit bracket 42 and a moving bracket 43, the limit bracket 42 is connected to the rotating shaft assembly 3, the moving bracket 43 is connected to the casing 1, and the limit bracket 42 is slidably connected to the moving bracket 43. In the process of pushing the housing 1 to rotate around the rotating shaft assembly 3, the steering component 41 can drive the moving support 43 to move along the length direction Y of the folding device relative to the limiting support 42, so that the moving support 43 is driven to move along the length direction Y of the folding device along the first housing 11. Specifically, during the folding process of the casing 1, the turning member 41 drives the moving support 43 to move in the direction away from the limiting support 42 to increase the overall length of the casing 1, and during the unfolding process of the casing 1, the turning member 41 drives the moving support 43 to move in the direction close to the limiting support 42 to return the casing 1 to the initial length. As shown in fig. 11 to 16, the steering member 41 includes a first steering member 411, a steering sleeve 412, and a second steering member 413. The embodiment of the present application is illustrated as the displacement compensation assembly 4 driving the first housing 11 to move. As shown in fig. 11, at least a portion of the first steering member 411, the steering sleeve 412 and the position limiting bracket 42 are all sleeved on the first rotating shaft 31, and the first steering member 411 and the position limiting bracket 42 can rotate with the first rotating shaft 31 (the steering sleeve 412 is sleeved on the first rotating shaft 31 and the fourth rotating shaft 34 at the same time). The first steering member 411 includes a steering portion 411a and a connecting portion 411b, the steering portion 411a is matched with the steering sleeve 412, the connecting portion 411b is connected with the second steering member 413, the steering portion 411a and the steering sleeve 412 are provided with matched spirals, so that the first steering member 411 can move relative to the steering sleeve 412 through spiral matching when rotating along with the first rotating shaft 31, and therefore the first steering member 411 can move along the width direction X of the folding device, and the second steering member 413 is driven to move along the width direction X of the folding device through the first steering member 411. As shown in fig. 14, the second steering member 413 includes a first portion 413a and a second portion 413b, the first steering member 411 drives the first portion 413a of the second steering member 413 to move along the X axis through a connecting portion 411b, and drives the second portion 413b of the second steering member 413 to move along the length direction Y of the folding apparatus, the first portion 413a of the second steering member 413 is mounted on the position-limiting support 42 and can move along the width direction X of the folding apparatus relative to the position-limiting support 42, the second portion 413b of the second steering member 413 is mounted on the moving support 43, the second steering member 413 can drive the moving support 43 to move along the length direction Y of the folding apparatus, and the moving support 43 drives the first housing 11 to move along the length direction Y of the folding apparatus. In the embodiment of the present application, the second housing 12 has the same structure as the first housing 11, and the second housing 12 is driven to rotate around the fourth rotating shaft 34 and move along the length direction Y of the folding device by the corresponding displacement compensation component 4, so that the total length of the housing during the folding process of the electronic device is compensated by the movement of the first housing 11 and the second housing 12.

As shown in fig. 13 and 14, in particular, in the thickness direction of the folding assembly, the position-limiting support 42 is provided with a first position-limiting hole 421 and a second position-limiting hole 422, the first position-limiting hole 421 extends along the width direction X of the folding device, the second position-limiting hole 422 extends along the length direction Y of the folding device, at least a portion of the first portion 413a of the second steering member 413 is disposed in the first position-limiting hole 421, and at least a portion of the second portion 413b of the second steering member 413 is disposed in the second position-limiting hole 422, so that when the first portion 413a of the second steering member 413 moves along the width direction X of the folding device, the second portion 413b is driven to move along the length direction Y of the folding device. The second position-limiting hole 422 limits the moving direction of the second portion 413b, so that the second portion 413b drives the movable support 43 to move along the length direction Y of the folding device. The movable rack 43 is provided with an avoiding hole 431, and the extending direction of the avoiding hole 431 is the moving direction of the first part 413a relative to the movable rack 43.

As shown in fig. 10 and 11, in the embodiment of the present application, the displacement compensation assembly 4 may be a symmetrical structure, the folding device is provided with at least two first steering members 411, two steering sleeves 412 and two second steering members 413, and the two first steering members 411 may be arranged oppositely, that is, one first steering member 411 is a left-handed screw, the other first steering member 411 is a right-handed screw, and the steering sleeves 412 are matched with the corresponding first steering members 411. In this application embodiment, realize first casing 11 and the synchronous rotation of second casing 12 through two pivots (first pivot 31, fourth pivot 34), when first casing 11 rotates with second casing 12 is synchronous, realize the synchronous displacement compensation of first casing 11 and second casing 12 through the displacement compensation subassembly, compare in prior art and use a plurality of pivots, the folding electronic equipment of realization of a plurality of casings, this application embodiment effectively reduces electronic equipment complete machine thickness, in order to be more convenient for use.

Of course, the displacement compensation assembly 4 may also be a single-unit structure, i.e. the displacement compensation assembly 4 is provided with a first steering member 411, a steering sleeve 412 and a second steering member 413.

In the embodiment of the present application, as shown in fig. 17, the force applied when the casing 1 is turned is converted into the displacement of the first direction-changing member 411 moving along the width direction X of the folding device, and the spiral conversion slope of the first direction-changing member 411 is designed as a variation of an arcsine function. The rotational steering analytic expression that can be inferred is:

f(θ)＝(A/π)arcsin(4θ/π-1)+A/2 (1)

wherein, A is the maximum value of the displacement in the width direction X, and theta is equal to [0, pi/2 ] is the opening angle of the first machine shell 11 or the second machine shell 12.

As shown in fig. 18, the displacement of the first steering member 411 in the width direction X is converted into the displacement of the first housing 11 or the second housing 12 in the length direction Y, and the conversion relationship is designed as a variation of a circular function. The horizontal steering analytic expression that can be deduced is:

(f(θ)+B)²+y²＝C² (2)

where C is a length of a midpoint connecting line between the first portion 413a and the second portion 413B of the second steering member 413, θ ∈ [0, π/2] is an opening angle of the first housing 11 or the second housing 12, B is a distance from a displacement start position of the first portion 413a of the second steering member 413 in the width direction X to the length direction Y, and Y is a perpendicular distance from the second portion 413B to the X axis in fig. 18.

The change in the displacement of the second portion 413b of the second steering member 413 can be obtained by the above equations (1) and (2), and thus the change in the displacement t1 from the axial center of the first rotating shaft 31 during the rotation of one point on the first housing 11 can be obtained. (wherein, when theta is equal to 0 degree, the casing 1 is in a folded state, and when theta is equal to 90 degrees, the casing 1 is in an unfolded state.)

As shown in fig. 19, when θ is 0 °, t1 is equal to 15.2; t1 equals 14.55 for θ of 15 °; t1 equals 14.18 for θ of 30 °; t1 equals 13.84 for θ of 45 °; t1 equals 13.45 when θ is 60 °; t1 equals 12.93 for θ of 75 °; at 90 deg., t1 equals 11.48.

For the sake of understanding, the numerical value A, B, C designed in this application is substituted into the above equations (1) and (2) to obtain the above calculated numerical result, but the above calculated numerical result is only some examples, the numerical value of θ is not necessarily the above numerical value, and the above numerical result is not necessarily an optimal value.

In the process of folding to unfolding the screen 2, the screen 2 is simulated to capture the change of the displacement t2 from the axle center of the first rotating shaft 31 after a point on the screen 2 is projected to the machine shell. (the axis of the screen 2 is different from the axis of the casing 1, and the rotation center of the screen 2 is located at the center of the first rotating shaft 31 and the fourth rotating shaft 34)

As shown in fig. 20, t2 is equal to 15.04 when θ is 0 °; t2 equals 14.4 for θ of 15 °; t2 equals 13.57 for θ of 30 °; t2 equals 13.23 when θ is 45 °; t2 equals 12.72 for θ of 60 °; t2 equals 12.11 when θ is 75 °; at 90 deg., t2 equals 11.45.

The point taken on the casing corresponds to the point taken on the screen 2 when the electronic device is in the unfolded state or the folded state (there is an error value), so as to observe the displacement changes of t1 and t2 in the process of unfolding or folding the electronic device. The point of getting on the casing and the point of getting on screen 2 can be the point that screen 2 and casing edge part correspond, also can be the screen and turn into the point that planar position and casing correspond by the drop form, and this application does not do the restriction to this. During the folding process of screens of different brands, the displacement t2 of the screen from the axis of the first rotating shaft 31 by the simulated grabbing has a difference. It can be seen from the above data that in the relatively independent motion process of the screen 2 and the casing 1, the displacement changes of the screen 2 and the casing 1 are basically matched, and the motion change trajectory of the casing 1 can be designed to be very close to the natural opening state of the screen 2 through a function analytic expression, so that the non-self stress of the screen 2 is reduced, that is, the extrusion or the pulling force of the casing 1 on the screen 2 is reduced, and the bending life of the flexible screen is favorably prolonged.

As shown in fig. 21 to 24, the folding device further includes a support mechanism 5, the support mechanism 5 is connected to the housing 1, and the support mechanism 5 is disposed below the screen 2 in the thickness direction Z of the folding device to support the screen 2. The support mechanism 5 can support the screen 2 when the screen 2 rotates and restrain the arc length change when the screen 2 rotates during the folding or unfolding of the electronic device. When the screen 2 is in the 0 ° state, at least part of the supporting mechanism 5 is tangent to the screen 2 to limit the water drop shape of the screen 2 after being folded, in this embodiment, the size of the water drop shape formed by the screen 2 can be changed according to the limit of the supporting mechanism 5 on the folded screen 2, when the screen 2 is in the 180 ° state, the supporting mechanism 5 has no constraint force on the screen 2, the supporting mechanism 5 is used for supporting the screen 2, and the risk that fingers of the screen 2 press the screen 2 to be sunken when touching the screen 2 is reduced.

As shown in fig. 25 and 26, the support mechanism 5 includes a fifth rotating shaft 52 and a support member 51, the support member 51 is connected to the casing 1, the fifth rotating shaft 52 is connected to the rotating shaft member 3, and the support member 51 can rotate around the fifth rotating shaft 52 to rotate with the screen 2.

As shown in fig. 24 and 25, the support assembly 51 includes a first support 511 and a plurality of second supports 512, the first support 511 extends along a length direction Y of the folding device, the plurality of second supports 512 are distributed along a width direction X of the folding device, the first support 511 extends along the width direction X of the folding device, and the first support 511 is vertically mounted to the plurality of second supports 512. When the screen 2 is in the unfolded state, the first support 511 and the second support 512 are in the unfolded state, and the first support 511 and the second support 512 support the screen 2; in the process of unfolding or folding the screen 2, the first support piece 511 and the second support piece 512 rotate along with the screen 2, and the first support piece 511 and the second support piece 512 support the screen 2 and restrict the change of the arc length when the screen 2 rotates; when the screen 2 is folded, the first support piece 511 and the second support piece 512 are folded, the second support piece 512 abuts against the screen 2, the size of the screen 2 folded into a water drop shape is limited by the second support plate, the first support piece 511 is provided with an arc surface, and the first support piece 511 is tangent to at least part of the screen 2 through the arc surface.

As shown in fig. 26, the supporting mechanism 5 further includes a connecting rod 513, one end of the connecting rod 513 is connected to the second supporting member 512, the other end of the connecting rod 513 is connected to the first housing 11, the connecting rod 513 is provided with an elongated hole 513a, and at least a portion of the second supporting member 512 is located in the elongated hole 513a and can move in the elongated hole 513 a. In the process of pushing the casing 1 to expand, the casing 1 drives the second supporting member 512 to rotate around the fifth rotating shaft 52 through the connecting rod 513, and as the casing 1 contracts in the rotating process, the casing 1 drives the connecting rod 513 to move towards the direction close to the second supporting member 512; in the process of pushing the housing 1 to fold, the housing 1 drives the second supporting element 512 to rotate around the fifth rotating shaft 52 through the connecting rod 513, and because the housing 1 extends out in the rotating process, the housing 1 drives the connecting rod 513 to move in the direction away from the second supporting element.

As shown in fig. 7, 24, and 27, the rotation centers of the support mechanism O3, the housing O2 (first housing or second housing), and the screen O1 are different.

The displacement supplementing assembly further comprises a guide part and a guide matching part, and the guide part and the guide matching part can move relatively along the length direction Y of the folding device;

one of the guide part and the guide matching part is arranged on the movable bearing frame, and the other one is arranged on the limiting bearing frame.

Specifically, as shown in fig. 28, the guide portion includes a plurality of position-limiting guide blocks 44, the guide engagement portion includes a plurality of first sliding grooves 432 engaged with the plurality of position-limiting guide blocks 44, and the position-limiting guide blocks 44 can slide along the first sliding grooves 432 and are connected with the position-limiting support 42 at least partially through the first sliding grooves 432 to connect the movable support 43 with the position-limiting support 42. During the movement of the position-limiting bracket 42 and the moving bracket 43, the position-limiting guide block 44 can move along the first sliding groove 432 to guide and limit the movement of the moving bracket 43.

As shown in fig. 29, alternatively, the guiding portion includes at least one limiting guide block 44, the guiding portion further includes limiting balls 45, the guiding engagement portion includes first limiting guide rails 46, the limiting balls 45 are mounted at two ends of the limiting bearing frame 42 along the width direction X of the folding device, the first limiting guide rails 46 are in rolling engagement with the limiting balls 45, and the first limiting guide rails 46 are mounted on the movable bearing frame 43. The limiting guide block 44 can press the movable bearing frame 43 and the limiting bearing frame 42, the movable bearing frame 43 moves on the limiting bearing frame 42 along a straight line, the moving distance is limited, but the friction force is large, and sliding friction can be changed into rolling friction by replacing part of the limiting guide block 44 with the limiting ball 45, so that the friction force is reduced.

As shown in fig. 30, alternatively, the guiding portion includes at least one limiting guide block 44, the guiding portion further includes a second limiting guide rail 49, the guiding engagement portion includes a second sliding groove 423, the second sliding groove 423 is located at two ends of the limiting support frame 42 along the width direction X of the folding device, the second limiting guide rail 49 is in sliding engagement with the second sliding groove 423, and the second limiting guide rail 49 is mounted on the movable support frame 43.

As shown in fig. 31, alternatively, the guiding portion includes at least one limiting guide block 44, the guiding portion further includes a limiting roller 48, the guiding engagement portion includes a first limiting guide rail 46, the limiting roller 48 is mounted at two ends of the limiting bearing frame 42 along the width direction X of the folding device, the first limiting guide rail 46 is in rolling engagement with the limiting roller 48, and the first limiting guide rail 46 is mounted on the movable bearing frame 43. The displacement compensation assembly 4 further comprises a limiting roller 47, the limiting roller 47 is positioned between the mobile bearing frame 43 and the limiting bearing frame 42, and the limiting roller 47 is in rolling fit with the mobile bearing frame 43. The limiting roller 47 is added around the limiting guide block 44, so that sliding friction force can be changed into rolling friction force, the mechanism friction force is effectively reduced, and the mechanism moves more smoothly.

It is noted that a portion of this patent application contains material which is subject to copyright protection. The copyright owner reserves the copyright rights whatsoever, except for making copies of the patent files or recorded patent document contents of the patent office.

Claims

1. A folding apparatus, characterized in that the folding apparatus comprises:

a rotating shaft assembly extending in a width direction of the folding device;

the displacement compensation assembly comprises a steering piece, a limiting bearing frame and a movable bearing frame, the steering piece and the limiting bearing frame can rotate relative to the rotating shaft assembly, at least part of the steering piece is connected with the movable bearing frame, the movable bearing frame is movably connected with the limiting bearing frame, and the movable bearing frame can move relative to the limiting bearing frame along the length direction of the folding device;

2. The folding apparatus of claim 1, wherein said steering member comprises a first steering member and a second steering member coupled to each other, said first steering member being rotatably coupled to said spindle assembly;

3. The folding apparatus of claim 2 wherein said steering member further comprises a steering sleeve, said steering sleeve being secured to said spindle assembly, and said first steering member being in threaded engagement with said steering sleeve;

4. The folding apparatus of claim 3, wherein the position-limiting bearer is provided with a first position-limiting hole and a second position-limiting hole along a thickness direction of the folding apparatus, the first position-limiting hole extending along a width direction of the folding apparatus, the second position-limiting hole extending along a length direction of the folding apparatus;

the second portion is connected with the mobile carrier.

5. The folding apparatus of claim 4, wherein the mobile carrier is provided with an escape aperture for receiving the first portion to escape movement of the first portion relative to the mobile carrier.

6. The folding apparatus of any of claims 1 to 5, wherein the displacement compensation assembly further comprises a guide portion and a guide engagement portion, the guide portion and the guide engagement portion being relatively movable along a length of the folding apparatus;

7. The folding apparatus of claim 6 wherein said guide portion includes a stop ball and said guide engagement portion includes a first stop rail, said first stop rail being in rolling engagement with said stop ball.

8. The folding apparatus of claim 6, wherein said guide portion comprises a stop roller, and said guide engagement portion comprises a first stop rail, said first stop rail being in rolling engagement with said stop roller;

9. The folding apparatus of claim 6, wherein said guide portion comprises a stop guide, and said guide engagement portion comprises a first runner extending along a length of said folding apparatus;

10. The folding device of claim 6, wherein the guide portion includes a second curb rail, and the guide engagement portion includes a second runner that is in sliding engagement with the second curb rail.

11. The folding device of any of claims 1 to 5, further comprising a support mechanism;

12. The folding apparatus of claim 11, wherein the support assembly includes a first support member and a plurality of second support members, the first support member extending in a width direction of the folding apparatus, the first support member being rotatably coupled to the fifth rotating shaft;

13. The folding apparatus of claim 12, wherein said support mechanism further comprises a linkage rod, said linkage rod being provided with an oblong hole extending along a length of said folding apparatus;

14. An electronic device, characterized in that the electronic device comprises:

a housing comprising a first housing and a second housing;

a screen mounted to the housing;

a folding device mounted on the housing, the folding assembly being as claimed in any one of claims 1 to 13.

15. The electronic device of claim 14, wherein the first housing and the second housing are respectively connected to two of the moving bearers of the displacement compensation assembly;

16. The electronic device according to claim 14, wherein a baffle is provided at both ends of the first housing and the second housing along a width direction of the folding device;