CN215186849U

CN215186849U - Folding mechanism, curled screen structure and electronic equipment

Info

Publication number: CN215186849U
Application number: CN202121541780.2U
Authority: CN
Inventors: 常橙; 孙承芳
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2021-07-07
Filing date: 2021-07-07
Publication date: 2021-12-14
Anticipated expiration: 2031-07-07

Abstract

The present disclosure provides a folding mechanism, a curled screen structure and an electronic device. The folding mechanism comprises a first moving plate, a second moving plate and a connecting rod mechanism. The first moving plate is supported below the object to be curled. The second moving plate is arranged at intervals with the first moving plate along the first direction. The second moving plate is connected to the first end of the object to be curled and supported below the object to be curled. The connecting rod mechanism is movably connected between the first moving plate and the second moving plate. The first moving plate moves along the second direction to drive the link mechanism to fold or unfold, and the link mechanism drives the second moving plate to move close to or far away from the first moving plate along the first direction so as to switch the object to be curled between a folded state and an unfolded state. The arrangement enables the object to be curled to be switched between the folded state and the unfolded state, the object to be curled can be a screen, the function of mutual matching of the screen and the whole curled state is realized, the purpose of the screen zooming function in the complete state is achieved, and the appearance of the whole machine is reduced.

Description

Folding mechanism, curled screen structure and electronic equipment

Technical Field

The present disclosure relates to the field of screen display, and in particular, to a folding mechanism, a rolled screen structure, and an electronic device.

Background

The curl screen refers to a flexible oled (Organic Light-Emitting Diode display). The successful mass production of a rolled screen is significantly better than the manufacture of a new generation of high-end smart phones. The future curled screen will be widely used with the continuous penetration of personal intelligent terminals.

In the related art, a sliding mobile phone is upgraded based on a folding screen, and partial display expansion, namely expansion or reduction of a plane area, is realized. Although the electronic product in the related art can realize the function of switching the size of the display area, the overall form of the electronic product cannot fully contract or extend the screen, but only can realize the function of partially contracting or extending.

SUMMERY OF THE UTILITY MODEL

The present disclosure provides a folding mechanism, a rolling screen structure, and an electronic apparatus, which are intended to reduce the overall shape.

In a first aspect, the present disclosure provides a folding mechanism comprising:

a first moving plate for supporting under an object to be curled;

the second moving plate is arranged at intervals with the first moving plate along a first direction, is connected to the first end of the object to be curled and is supported below the object to be curled; and

the connecting rod mechanism is movably connected between the first moving plate and the second moving plate;

the first moving plate moves along a second direction to drive the link mechanism to fold or unfold, and the link mechanism drives the second moving plate to move close to or far away from the first moving plate along the first direction so as to switch the object to be curled between a folded state and an unfolded state; wherein the second direction is perpendicular to the first direction.

Optionally, the apparatus further comprises a driving assembly connected to the first moving plate and configured to drive the first moving plate to move along the second direction.

Optionally, the driving assembly includes a motor, a first transmission member connected to the motor, and a second transmission member connected to the first transmission member, and the second transmission member is connected to the first moving plate;

the motor rotates clockwise to drive the first transmission piece to rotate clockwise, the first transmission piece drives the second transmission piece to move away from the motor along the second direction, and the second transmission piece drives the first movable plate to move forward along the second direction;

the motor rotates anticlockwise to drive the first transmission piece to rotate anticlockwise, the first transmission piece drives the second transmission piece to move close to the motor along the second direction, and the second transmission piece drives the first moving plate to move reversely along the second direction.

Optionally, the first transmission part is a screw rod, the second transmission part is a nut matched with the screw rod, and the screw rod extends along the second direction; or

The first transmission piece is a screw rod, the second transmission piece is a gear matched with the screw rod, and the screw rod extends along the second direction; or

The first transmission piece is a gear, the second transmission piece is a rack matched with the gear, and the rack extends along the second direction.

Optionally, the link mechanism includes:

the first link assembly is movably connected to the first end of the first moving plate and the first end of the second moving plate;

the second connecting rod assembly is movably connected to the second end of the first moving plate and the second end of the second moving plate;

the first moving plate moves forward along the second direction to drive the first connecting rod assembly and the second connecting rod assembly to be folded so as to drive the second moving plate to move close to the first moving plate along the first direction;

the first moving plate moves reversely along the second direction to drive the first connecting rod assembly and the second connecting rod assembly to unfold, so that the second moving plate is driven to move away from the first moving plate along the first direction.

Optionally, the first link assembly includes:

the first end of the first connecting rod is hinged with the first moving plate;

a first end of the second connecting rod is hinged with the second moving plate, and a second end of the second connecting rod is hinged with a second end of the first connecting rod;

the first moving plate moves forward along the second direction to drive the first connecting rod to rotate clockwise, and the first connecting rod drives the second connecting rod to rotate anticlockwise so that the first connecting rod assembly is folded;

the first moving plate moves reversely along the second direction, the first moving plate drives the first connecting rod to rotate anticlockwise, and the first connecting rod drives the second connecting rod to rotate clockwise so that the first connecting rod assembly is unfolded.

Optionally, the first moving plate is provided with a first tooth portion, the first link assembly further includes a first gear adapted to the first tooth portion, and the first gear is connected to the first end of the first link and connected to the first tooth portion; and/or

The second moving plate is provided with a second tooth part, the first connecting rod assembly further comprises a second gear matched with the second tooth part, and the second gear is connected to the first end of the second connecting rod and connected with the second tooth part; and/or

The first link assembly further includes a first hinge coupled between the first link and the second link.

Optionally, the second connecting rod assembly includes:

a first end of the third connecting rod is hinged with the first moving plate;

a first end of the fourth connecting rod is hinged with the second moving plate, and a second end of the fourth connecting rod is hinged with a second end of the third connecting rod;

the first moving plate moves forward along the second direction to drive the third connecting rod to rotate anticlockwise, and the third connecting rod drives the fourth connecting rod to rotate clockwise to enable the second connecting rod assembly to be folded;

the first moving plate moves reversely along the second direction, the first moving plate drives the third connecting rod to rotate clockwise, and the third connecting rod drives the fourth connecting rod to rotate anticlockwise so that the second connecting rod assembly is unfolded.

Optionally, the first moving plate is provided with a third tooth portion, the second link assembly further includes a third gear adapted to the third tooth portion, and the third gear is connected to the first end of the third link and connected to the third tooth portion; and/or

The second moving plate is provided with a fourth tooth part, the second connecting rod assembly further comprises a fourth gear matched with the fourth tooth part, and the fourth gear is connected to the first end of the fourth connecting rod and connected with the fourth tooth part; and/or

The second link assembly further includes a second hinge coupled between the third link and the fourth link.

In a second aspect, the present disclosure also provides a rolled screen structure comprising: a rolling screen and the folding mechanism of the first aspect;

wherein the first moving plate is supported below the curled screen;

the second moving plate is connected to the first end of the curled screen and supported below the curled screen; and

the first movable plate moves along the second direction to drive the link mechanism to fold or unfold, and the link mechanism drives the second movable plate to move along the first direction to be close to or far away from the first movable plate so as to switch the curled screen between a folded state and an unfolded state.

Optionally, the display device further comprises a rotating shaft, and the second end of the curled screen is wound on the rotating shaft and connected with the rotating shaft;

when the curled screen is switched from the unfolding state to the folding state, the rotating shaft rotates to enable the second end of the curled screen to gradually wind into the rotating shaft;

when the curling screen is switched to the unfolding state from the folding state, the rotating shaft rotates to enable the second end of the curling screen to gradually wind out the rotating shaft.

Optionally, the rotating shaft is located on one side of the folding mechanism away from the curled screen; or

The rotating shaft and the folding mechanism are arranged at intervals along the first direction.

In a third aspect, the present disclosure also provides an electronic device, including:

a housing; and

the rolling screen structure according to the second aspect is arranged in the body;

when the curled screen is switched from the unfolded state to the folded state, the first moving plate moves forward along the second direction to drive the link mechanism to fold, and the link mechanism drives the second moving plate to move close to the first moving plate along the first direction so as to enable the first end of the curled screen to retract into the shell;

when the curled screen is switched to the unfolding state from the folding state, the first movable plate is driven to move in the reverse direction of the second direction, the connecting rod mechanism is unfolded, the connecting rod mechanism drives the second movable plate to move in the first direction, the first movable plate moves, and therefore the first end of the curled screen is gradually far away from the shell.

The present disclosure provides a folding mechanism, which drives a link mechanism to fold or unfold through the horizontal movement of a first moving plate, and further drives a second moving plate to move close to or far away from the first moving plate. The arrangement enables the object to be curled to be switched between the folded state and the unfolded state, the object to be curled can be a screen, the function of mutually matching the screen and the whole curled state is realized, the purpose of the screen zooming function in the complete state is achieved, and the appearance of the whole machine is reduced.

Drawings

Fig. 1 is a schematic structural view of a rolled screen of an electronic device according to the present disclosure in an unfolded state;

FIG. 2 is a schematic view of the electronic device shown in FIG. 1 with the rolled screen in a retracted state;

FIG. 3 is a cross-sectional view of the rolled screen structure of the electronic device shown in FIG. 1;

FIG. 4 is a cross-sectional view of the rolled screen structure of the electronic device shown in FIG. 2;

fig. 5 is a schematic structural diagram of a first link assembly and a second link assembly of a link mechanism of an electronic device during folding or extending.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Rather, they are merely examples of devices consistent with certain aspects of the present disclosure, as detailed in the appended claims.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in the description and claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "a number" means two or more. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this disclosure and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

The present disclosure provides a folding mechanism including a first moving plate, a second moving plate, and a link mechanism. The first moving plate is supported below the object to be curled. The second moving plate is arranged at intervals with the first moving plate along the first direction. The second moving plate is connected to the first end of the object to be curled and supported below the object to be curled. The connecting rod mechanism is movably connected between the first moving plate and the second moving plate. The first moving plate moves along the second direction to drive the link mechanism to fold or unfold, and the link mechanism drives the second moving plate to move close to or far away from the first moving plate along the first direction so as to switch the object to be curled between a folded state and an unfolded state. Wherein the second direction is perpendicular to the first direction.

The folding mechanism provided by the present disclosure drives the link mechanism to fold or unfold through the horizontal movement of the first moving plate, and further drives the second moving plate to move close to or far away from the first moving plate. The arrangement enables the object to be curled to be switched between the folded state and the unfolded state, the object to be curled can be a screen, the function of mutual matching of the screen and the whole curled state is realized, the purpose of the screen zooming function in the complete state is achieved, and the appearance of the whole machine is reduced.

The present disclosure also provides a rolled screen structure, comprising: a roll screen and the folding mechanism. Wherein the first moving plate is supported below the curling screen. The second moving plate is connected to the first end of the curled screen and supported below the curled screen. The first movable plate moves along the second direction to drive the link mechanism to fold or unfold, and the link mechanism drives the second movable plate to move along the first direction to be close to or far away from the first movable plate so as to switch the curled screen between a folded state and an unfolded state. The following description will be given taking an object to be curled as a curled screen as an example.

According to the curled screen structure provided by the disclosure, the connecting rod mechanism is driven to fold or unfold through the horizontal movement of the first moving plate, and the second moving plate is further driven to move close to or far away from the first moving plate. By the arrangement, the curled screen is switched between the folded state and the unfolded state, the function of mutual matching of the screen and the whole curled state is realized, the purpose of the screen zooming function in the complete state is achieved, and the appearance of the whole machine is reduced.

The present disclosure also provides an electronic device, comprising: the casing with locate the curly screen structure in the casing. When curling screen self-development state switches to fold condition, first movable plate is followed second direction forward removes, drives link mechanism is folding, link mechanism drives the second movable plate is followed first direction is close to first movable plate removes, so that the first end of curling screen retracts extremely in the casing. When the curled screen is switched to the unfolding state from the folding state, the first movable plate is driven to move in the reverse direction of the second direction, the connecting rod mechanism is unfolded, the connecting rod mechanism drives the second movable plate to move in the first direction, the first movable plate moves, and therefore the first end of the curled screen is gradually far away from the shell.

According to the electronic equipment provided by the disclosure, the connecting rod mechanism is driven to fold or unfold by the horizontal movement of the first moving plate, and the second moving plate is further driven to move close to or far away from the first moving plate, so that the folding or unfolding of the curled screen is realized. By the arrangement, the curled screen is switched between the folded state and the unfolded state, the function of mutual matching of the screen and the whole curled state is realized, the purpose of the screen zooming function in the complete state is achieved, and the appearance of the whole machine is reduced.

Fig. 1 is a schematic structural diagram illustrating a rolled screen 2 of an electronic device 1 provided by the present disclosure in an unfolded state. Fig. 2 is a schematic structural diagram of the electronic device 1 shown in fig. 1, in which the rolled screen 2 is in a contracted state. Referring to fig. 1 and 2, the electronic device 1 includes a housing 10 and a rolling screen structure 11. The rolling screen structure 11 comprises a rolling screen 2, a first moving plate 3, a second moving plate 4 and a link mechanism 5. The first moving plate 3 is supported below the curling screen 2. The second moving plate 4 is spaced apart from the first moving plate 3 in the first direction (vertical direction in fig. 1). The second moving plate 4 is connected to a first end of the rolled screen 2 (e.g., an upper end of the rolled screen 2 in fig. 1) and is supported below the rolled screen 2. The link mechanism 5 is movably connected between the first moving plate 3 and the second moving plate 4. The first moving plate 3 moves along the second direction (e.g. the horizontal direction in fig. 1) to drive the link mechanism 5 to fold or unfold, and the link mechanism 5 drives the second moving plate 4 to move close to or away from the first moving plate 3 along the first direction, so that the rolling screen 2 is switched between the folded state and the unfolded state. Wherein the second direction is perpendicular to the first direction. In the related art, the whole state of the intelligent terminal cannot be completely contracted, and only a part can be contracted, so that the whole state of the intelligent terminal is large in size and needs to be further improved. In this embodiment, the housing 10 is connected to a rolled screen structure 11. Specifically, the first moving plate 3 is adjacent to and connected to the housing 10. The second moving plate 4 is spaced from the first moving plate 3 in a first direction (vertical direction in fig. 1), and is connected to the winding screen 2. A link mechanism 5 is connected between the first moving plate 3 and the second moving plate 4. The first direction includes horizontal left and horizontal right. The second direction includes vertically upward and vertically downward. In the example shown in the figure, when the rolling screen 2 is changed from the unfolded state to the contracted state, the first moving plate 3 moves leftwards along the horizontal direction and drives the link mechanism 5 to fold, and further drives the second moving plate 4 to move rightwards along the horizontal direction and close to the first moving plate 3; when the curled screen 2 is changed from the contracted state to the expanded state, the first moving plate 3 moves rightwards along the horizontal direction, and drives the link mechanism 5 to expand, and further drives the second moving plate 4 to move leftwards along the horizontal direction and move away from the first moving plate 3. That is, the first moving plate 3 moves leftward, which brings the rolled screen 2 to fold. The first moving plate 3 moves rightwards to drive the curling screen 2 to unfold. Therefore, the curled screen 2 is switched between the folded state and the unfolded state, the function of mutual matching of the screen and the whole curled state is realized, the purpose of the screen zooming function in the complete state is achieved, and the appearance form of the whole machine is reduced. It should be noted that, in another embodiment (not shown), the first moving plate 3 moves to the left to unfold the rolling screen 2. The first moving plate 3 moves rightwards to drive the rolling screen 2 to fold, and the whole moving process is opposite to the above embodiment and will be described in detail below.

In some embodiments, the curled screen 2 comprises a polyimide film material and/or a polyester film material and/or a cyclic olefin polymer film material and/or a liquid crystal polymer film material and/or a PE protective film material and/or a polydimethylsiloxane film material. Which is advantageous for improving the quality of the rolled screen 2.

Fig. 3 shows a cross-sectional view of the rolled screen structure 11 of the electronic device 1 shown in fig. 1. Fig. 4 shows a cross-sectional view of the rolled screen structure 11 of the electronic device 1 shown in fig. 2. As shown in fig. 3 and 4, in some embodiments, the rolling screen structure 11 further includes a rotating shaft 28 disposed in the housing 10. A second end of the rolled screen 2 (the end opposite to the upper end of the rolled screen 2 in fig. 1) is wound around the rotating shaft 28 and connected to the rotating shaft 28. When the rolled screen 2 is switched from the unfolded state to the folded state, the rotating shaft 28 rotates so that the second end of the rolled screen 2 gradually winds around the rotating shaft 28. When the rolling screen 2 is switched from the folded state to the unfolded state, the rotating shaft 28 rotates to gradually wind the second end of the rolling screen 2 around the rotating shaft 28. In this embodiment, the shaft 28 is disposed inside the housing 10 and connected to a second end of the rolling screen 2, which is disposed opposite to the first end of the rolling screen 2. When the rolling screen 2 is switched from the unfolding state to the folding state, the first end of the rolling screen 2 retracts into the housing 10, and the rotating shaft 28 is driven to rotate, so that the second end of the rolling screen 2 gradually winds into the rotating shaft 28. When the curled screen 2 is switched from the folded state to the unfolded state, the first end of the curled screen 2 gradually moves away from the housing 10, and the rotating shaft 28 is driven to rotate so that the second end of the curled screen 2 gradually winds out of the rotating shaft 28.

Further, the rotating shaft 28 is located at one side of the folding mechanism far away from the rolled screen 2, that is, the rolled screen 2 is located at one side of the folding mechanism, and the rotating shaft 28 is located at the other side of the folding mechanism, so that the internal space of the housing 10 can be reasonably utilized. In the example shown in fig. 3 and 4, the spindle 28 is spaced from the folding mechanism in the first direction. In the embodiment, the rotating shaft 28 is spaced from the folding mechanism along the first direction and is located at a side close to the first moving plate 3, so that the rolling screen 2 can be conveniently retracted or unfolded, the longitudinal space inside the housing 10 is not occupied, and the structural design of the whole machine miniaturization is facilitated.

By arranging the rotating shaft 28, the second moving plate 4 is close to the first moving plate 3, and the rolling screen 2 is retracted into the housing 10 or extended out of the housing 10 through the rotating shaft 28, and the rotating shaft 28 can cooperate with the folding mechanism to work, so that the rolling screen 2 can be folded or unfolded better. In addition, the rotating shaft 28 is used for accommodating and tidying the curled screen 2, so that the curled screen 2 is prevented from being jammed and easily damaged in the process of contraction or expansion. It will be appreciated that the shaft 28 may act as a roller, rotating with the rolled screen 2 as it is unfolded or folded. It will also be appreciated that the principle of operation of the retraction or deployment of the rolled up screen 2 is similar to that of a tape measure.

In some embodiments, when the rolled screen 2 is switched from the unfolded state to the folded state, the first moving plate 3 moves forward along the second direction to drive the link mechanism 5 to fold, and the link mechanism 5 drives the second moving plate 4 to move close to the first moving plate 3 along the first direction, so that the first end of the rolled screen 2 gradually retracts into the housing 10. When the curled screen 2 is switched from the folded state to the unfolded state, the first moving plate 3 moves reversely along the second direction to drive the link mechanism 5 to unfold, and the link mechanism 5 drives the second moving plate 4 to move away from the first moving plate 3 along the first direction, so that the first end of the curled screen 2 moves away from the shell 10. In this embodiment, when the rolling screen 2 is switched from the unfolded state to the folded state, the first moving plate 3 moves forward along the second direction (as shown in fig. 1, the first moving plate 3 moves horizontally leftward), and drives the link mechanism 5 to fold, and further drives the second moving plate 4 to move horizontally rightward and close to the first moving plate 3. When the rolling screen 2 is changed from the contracted state to the expanded state, the first moving plate 3 moves in the reverse direction along the second direction (as shown in fig. 1, the first moving plate 3 moves horizontally rightward), and drives the link mechanism 5 to expand, and further drives the second moving plate 4 to move horizontally leftward and away from the first moving plate 3. Therefore, the curled screen 2 is switched between the folded state and the unfolded state, the function of mutual matching of the screen and the whole curled state is realized, the purpose of the screen zooming function in the complete state is achieved, and the appearance form of the whole machine is reduced.

With continued reference to fig. 1, in some embodiments, the rolling screen structure 11 further includes a driving assembly 6 connected to the first moving plate 3 for driving the first moving plate 3 to move in the second direction. In this embodiment, the driving assembly 6 is connected to the first moving plate 3. When the driving assembly 6 rotates clockwise, the first moving plate 3 is driven to move horizontally leftward. When the driving assembly 6 rotates counterclockwise, the first moving plate 3 is driven to move horizontally to the right. So set up, drive assembly 6 and first movable plate 3 are mutually supported effectually.

In some embodiments, the driving assembly 6 includes a motor 7, a first transmission member 8 connected to the motor 7, and a second transmission member 9 connected to the first transmission member 8, the second transmission member 9 being connected to the first moving plate 3. The motor 7 rotates clockwise to drive the first transmission member 8 to rotate clockwise, the first transmission member 8 drives the second transmission member 9 to move (i.e. move leftwards) away from the motor 7 along the second direction, and the second transmission member 9 drives the first movable plate 3 to move forwards along the second direction. The motor 7 rotates counterclockwise to drive the first transmission member 8 to rotate counterclockwise, the first transmission member 8 drives the second transmission member 9 to move (i.e. move rightward) close to the motor 7 along the second direction, and the second transmission member 9 drives the first moving plate 3 to move reversely along the second direction. In this embodiment, the driving assembly 6 includes a motor 7, a first transmission member 8 and a second transmission member 9. Wherein the first transmission member 8 is connected between the motor 7 and the second transmission member 9. The second transmission member 9 is fixedly connected to the first moving plate 3. The first transmission piece 8 is driven by the motor 7 to drive the second transmission piece 9 to rotate. Further, since the second transmission member 9 is connected to the first moving plate, the second transmission member 9 pushes the first moving plate 3 to move horizontally when rotating. Specifically, when the rolling screen 2 is changed from the unfolded state to the folded state, the motor 7 rotates clockwise to drive the second transmission member 9 to rotate clockwise, so that the first moving plate 3 moves horizontally leftward. When the coiled screen 2 is converted from the contracted state to the expanded state, the motor 7 rotates counterclockwise, and drives the second transmission piece 9 to rotate counterclockwise, so that the first moving plate 3 moves horizontally to the right. Therefore, the motor 7 and the two transmission pieces control the first moving plate 3 to move leftwards or rightwards horizontally, so that the motor 7, the first transmission piece 8 and the second transmission piece 9 are sequentially matched and rotate, the first moving plate 3 is pushed to move horizontally, and the structure is simple and the transmission effect is good. In some embodiments, the second transmission element 9 is fixed to the first moving plate 3 by welding.

In some embodiments, the first transmission member 8 is a screw. The second transmission member 9 is a nut adapted to the screw. The screw rod extends along the second direction. In this embodiment, the first transmission member 8 is a screw rod having a cylindrical shape. The second transmission member 9 may be a nut. The screw is rotated by the motor 7, so that power is transmitted to the nut, the nut is rotated, and the first moving plate 3 is further pushed to move in the horizontal direction. And the screw rod extends along the second direction, that is, the extending direction of the screw rod is on the same straight line with the extending direction of the first moving plate 3. So, transmit the drive power of motor 7 to the nut through the screw rod to further transmit to first movable plate 3, make in the in-process of transmission drive power, reduce the loss, promote the effect of first movable plate 3 better.

In some embodiments, the first transmission member 8 is a screw. The second transmission member 9 is a gear adapted to a screw rod extending in the second direction. In this embodiment, the first transmission member 8 is a screw rod having a cylindrical shape, and the second transmission member 9 may be a gear. The gear refers to a mechanical element which is provided with a gear on a wheel rim and continuously meshed with the gear to transmit motion and power. The motor 7 drives the screw rod to rotate, so that the gear is driven to rotate. Through setting up the gear rotation, improve power transmission. Compared with the nut, the gear can meet the requirement of power for pushing the first moving plate 3, and the contraction or expansion stability of the curled screen 2 is effectively improved.

In some embodiments, the first transmission member 8 is a gear. The second transmission piece 9 is a rack matched with the gear, and the rack extends along the second direction. In this embodiment, the first transmission member 8 is provided as a gear. The second transmission member 9 is a rack. The gear is driven to rotate by the motor 7, so that power is transmitted to the rack, the rack is rotated, and the first moving plate 3 is further pushed to move in the horizontal direction. Likewise, the rack extends in the same direction as the first moving plate 3. So, transmit the drive power of motor 7 to the rack through the gear to further transmit to first movable plate 3, make in the in-process of transmission drive power, reduce the loss, promote the effect of first movable plate 3 better.

In some embodiments, the linkage mechanism 5 includes a first linkage assembly 12, a second linkage assembly 13. The first link assembly 12 is movably connected to a first end of the first moving plate 3 (e.g., a left end of the first moving plate 3 in fig. 1) and a first end of the second moving plate 4 (e.g., a left end of the second moving plate 4 in fig. 1). The second link assembly 13 is movably connected to a second end of the first moving plate 3 (e.g., a right end of the first moving plate 3 in fig. 1) and a second end of the second moving plate 4 (e.g., a right end of the second moving plate 4 in fig. 1). The first moving plate 3 moves forward in the second direction (leftward in fig. 1), and the first link assembly 12 and the second link assembly 13 are driven to fold, so as to drive the second moving plate 4 to move close to the first moving plate 3 in the first direction. The first moving plate 3 moves in the second direction (to the right in fig. 1), and the first link assembly 12 and the second link assembly 13 are driven to expand, so as to drive the second moving plate 4 to move away from the first moving plate 3 in the first direction. In this embodiment, the folding or unfolding of the rolling screen 2 is realized by providing two sets of link assemblies. Specifically, the first link assembly 12 and the second link assembly 13 are respectively and oppositely connected between the first moving plate 3 and the second moving plate 4. When the curled screen 2 is changed from the unfolded state to the retracted state, the driving assembly 6 rotates clockwise to push the first moving plate 3 to move forward along the second direction (e.g. the first moving plate 3 moves leftward along the horizontal direction in fig. 1), so as to drive the first link assembly 12 and the second link assembly 13 to fold, further drive the second moving plate 4 to move close to the first moving plate 3 along the vertical direction, and further retract the curled screen 2 into the housing 10. When the curled screen 2 is converted from the retracted state to the extended state, the driving assembly 6 rotates counterclockwise to push the first moving plate 3 to move in the reverse direction along the second direction (for example, the first moving plate 3 moves horizontally rightward in fig. 1), so as to drive the first link assembly 12 and the second link assembly 13 to be converted from the folded state to the extended state, and further drive the second moving plate 4 to move away from the first moving plate 3 along the vertical direction, so that the curled screen 2 can be extended out from the housing 10.

Fig. 5 is a schematic structural view of the first link assembly 12 and the second link assembly 13 of the link mechanism 5 shown in fig. 1 during folding or extension. As shown in fig. 5, in some embodiments, the first link assembly 12 includes a first link 14 and a second link 15. A first end of the first link 14 is hinged to the first moving plate 3. A first end of the second link 15 is hinged to the second moving plate 4. A second end of the second link 15 is hinged to a second end of the first link 14. The first moving plate 3 moves forward along the second direction, and drives the first connecting rod 14 to rotate clockwise. The first link 14 rotates the second link 15 counterclockwise to fold the first link assembly 12. The first moving plate 3 moves reversely in the second direction. The first moving plate 3 drives the first link 14 to rotate counterclockwise. The first link 14 rotates the second link 15 clockwise to deploy the first link assembly 12. In this embodiment, the first link assembly 12 is folded by two links hinged together. Specifically, a first end of the first link 14 (e.g., a bottom end of the first link 14 in fig. 1) is connected to the left end of the first moving plate 3. A first end of the second link 15 (e.g., the top end of the second link 15 in fig. 1) is connected to the second moving plate 4. The second end of the first link 14 (e.g., the top end of the first link 14 in fig. 1) is hinged to the second end of the second link 15 (e.g., the bottom end of the second link 15 in fig. 1). When the curled screen 2 is changed from the unfolded state to the folded state, the driving assembly 6 rotates clockwise to push the first moving plate 3 to move left along the horizontal direction, further drive the first connecting rod 14 to rotate clockwise, and drive the second connecting rod 15 to rotate counterclockwise, so that the first connecting rod assembly 12 is in the folded state. When the rolling screen 2 is changed from the retracted state to the extended state, the driving assembly 6 rotates counterclockwise to push the first moving plate 3 to move horizontally rightward, further driving the first link 14 to rotate counterclockwise and driving the second link 15 to rotate clockwise, so that the first link assembly 12 is in the extended state.

In some embodiments, the first moving plate 3 is provided with a first tooth 16. The first link assembly 12 further includes a first gear 17 that is adapted to the first tooth portion 16. The first gear 17 is connected to a first end of the first link 14 and is connected to the first tooth portion 16. In this embodiment, the first gear 17 is connected to the bottom end of the first link 14, and the first gear 17 abuts against the left end of the first moving plate 3. When the rolling screen 2 is changed from the unfolded state to the folded state, the driving assembly 6 rotates clockwise to push the first moving plate 3 to move horizontally leftward. Further, the first moving plate 3 rotates the first gear 17, thereby folding the first link assembly 12.

In some embodiments, the second moving plate 4 is provided with a second tooth 18. The first link assembly 12 also includes a second gear 19 that mates with the second tooth 18. The second gear 19 is connected to a first end of the second link 15 and is connected with the second gear 19. In this embodiment, the second gear 19 is connected to the top end of the second link 15, and the second gear 19 abuts against the left end of the second moving plate 4. When the rolling screen 2 is changed from the unfolded state to the folded state, the driving assembly 6 rotates clockwise to push the first moving plate 3 to move horizontally leftward. Further, the first moving plate 3 drives the first gear 17 to rotate, so that the first link assembly 12 is folded. Further, the first link assembly 12 transmits power to the second gear 19, so that the second gear 19 rotates, and the second moving plate 4 is pushed to move to the right along the horizontal direction and close to the first moving plate 3. When the roll screen 2 is changed from the contracted state to the expanded state, the driving assembly 6 rotates counterclockwise to push the first moving plate 3 to move horizontally rightward. Further, the first moving plate 3 rotates the first gear 17, thereby extending the first link assembly 12. Further, the first link assembly 12 transmits power to the second gear 19, so that the second gear 19 rotates to push the second moving plate 4 to move leftwards along the horizontal direction and away from the first moving plate 3.

In some embodiments, the first link assembly 12 further includes a first hinge 20 connected between the first link 14 and the second link 15. The first hinge 20 is arranged between the first connecting rod 14 and the second connecting rod 15, so that the first connecting rod 14 and the second connecting rod 15 can be mutually matched to realize the folding or extending function.

In some embodiments, the second linkage assembly 13 includes a third linkage 21 and a fourth linkage 22. A first end of the third link 21 is hinged to the first moving plate 3. A first end of the fourth link 22 is hinged to the second moving plate 4. A second end of the fourth link 22 is hinged with a second end of the third link 21. The first moving plate 3 moves forward along the second direction, and drives the third connecting rod 21 to rotate counterclockwise. The third link 21 drives the fourth link 22 to rotate clockwise to fold the second link assembly 13. The first moving plate 3 moves reversely in the second direction. The first moving plate 3 drives the third link 21 to rotate clockwise. The third link 21 drives the fourth link 22 to rotate counterclockwise to unfold the second link assembly 13. In this embodiment, the second link assembly 13 is folded by hinging two links. Specifically, a first end of the third link 21 (e.g., a bottom end of the third link 21 in fig. 1) is connected to a right end of the first moving plate 3. A first end of the fourth link 22 (e.g., the top end of the fourth link 22 in fig. 1) is connected to the second moving plate 4. A second end of the third link 21 (e.g., a top end of the third link 21 in fig. 1) is hinged to a second end of the fourth link 22 (e.g., a bottom end of the fourth link 22 in fig. 1). When the rolling screen 2 is changed from the unfolded state to the folded state, the driving assembly 6 rotates clockwise to push the first moving plate 3 to move horizontally leftward, further drive the third connecting rod 21 to rotate counterclockwise, and drive the fourth connecting rod 22 to rotate clockwise, so that the second connecting rod assembly 13 is in the folded state. When the rolling screen 2 is changed from the retracted state to the extended state, the driving assembly 6 rotates counterclockwise to push the first moving plate 3 to move horizontally rightward, further driving the third link 21 to rotate clockwise and driving the fourth link 22 to rotate counterclockwise, so that the second link assembly 13 is in the extended state.

In some embodiments, the first moving plate 3 is provided with a third tooth 23. The second connecting-rod assembly 13 also comprises a third gear wheel 24 adapted to the third toothing 23. The third gear 24 is connected to a first end of the third link 21 and is connected to the third tooth portion 23. In this embodiment, the third gear 24 is connected to the bottom end of the third link 21, and the third gear 24 abuts against the right end of the first moving plate 3. When the rolling screen 2 is changed from the unfolded state to the folded state, the driving assembly 6 rotates clockwise to push the first moving plate 3 to move horizontally leftward. Further, the first moving plate 3 rotates the third gear 24, thereby folding the second link assembly 13.

In some embodiments, the second moving plate 4 is provided with a fourth tooth 25. The second connecting-rod assembly 13 also comprises a fourth gear wheel 26, which is adapted to the fourth toothing 25. The fourth gear 26 is connected to a first end of the fourth link 22 and is connected to the fourth tooth portion 25. In this embodiment, the fourth gear 26 is connected to the top end of the fourth link 22, and the fourth gear 26 abuts against the right end of the second moving plate 4. When the rolling screen 2 is changed from the unfolded state to the folded state, the driving assembly 6 rotates clockwise to push the first moving plate 3 to move horizontally leftward. Further, the first moving plate 3 drives the third gear 24 to rotate, so that the second connecting rod assembly 13 is folded. Further, the second link assembly 13 transmits power to the fourth gear 26, so that the fourth gear 26 rotates to push the second moving plate 4 to move horizontally to the right and close to the first moving plate 3. When the roll screen 2 is changed from the contracted state to the expanded state, the driving assembly 6 rotates counterclockwise to push the first moving plate 3 to move horizontally rightward. Further, the first moving plate 3 rotates the third gear 24, thereby extending the second link assembly 13. Further, the second link assembly 13 transmits power to the fourth gear 26, so that the fourth gear 26 rotates to push the second moving plate 4 to move leftwards along the horizontal direction and away from the first moving plate 3.

In some embodiments, the second linkage assembly 13 further includes a second hinge 27 connected between the third link 21 and the fourth link 22. The function of folding or extending the third link 21 and the fourth link 22 in cooperation with each other is realized by providing a second hinge 27 between the third link 21 and the fourth link 22.

In the example shown in the drawings, one end of the left side portion of the first moving plate 3, which is close to the second moving plate 4, is provided with a first tooth 16, and one end of the right side portion of the first moving plate 3, which is far from the second moving plate 4, is provided with a third tooth 23. The left side of the second moving plate 4 is provided with a second tooth 18 at the end far away from the first moving plate 3, and the right side of the second moving plate 4 is provided with a fourth tooth 25 at the end near the first moving plate 3.

So configured, when the first moving plate 3 moves leftwards, the first gear 17 and the third gear 24 are driven to rotate clockwise and anticlockwise, so as to drive the first link assembly 12 and the second link assembly 13 to fold. Further, the second gear 19 and the fourth gear 26 are driven to rotate counterclockwise and clockwise, so that the second moving plate 4 moves toward the first moving plate 3, thereby driving the rolling screen 2 to fold. When the first moving plate 3 moves rightwards, the first gear 17 is driven to rotate anticlockwise and the third gear 24 is driven to rotate clockwise, so that the first connecting rod assembly 12 and the second connecting rod assembly 13 are driven to be unfolded. Further, the second gear 19 and the fourth gear 26 are driven to rotate clockwise and counterclockwise, so that the second moving plate 4 moves away from the first moving plate 3, and the rolling screen 2 is driven to unfold.

In another example (not shown), the first tooth is provided on the end of the left side of the first moving plate away from the second moving plate, and the third tooth is provided on the end of the right side of the first moving plate close to the second moving plate. One end, close to the first moving plate, of the left side portion of the second moving plate is provided with a second tooth portion, and one end, far away from the first moving plate, of the right side portion of the second moving plate is provided with a fourth tooth portion. That is, the rotation direction of the gears when the first moving plate moves is opposite to the rotation direction of the gears in the above-described illustrated embodiment.

So set up, when first movable plate moved left, drive first gear anticlockwise rotation and third gear clockwise rotation to drive first link assembly and the expansion of second link assembly. Further, the second gear is driven to rotate clockwise and the fourth gear rotates anticlockwise, so that the second moving plate moves towards the direction far away from the first moving plate, and the curled screen is driven to unfold. When the first moving plate moves rightwards, the first gear is driven to rotate clockwise and the third gear is driven to rotate anticlockwise, so that the first connecting rod assembly and the second connecting rod assembly are driven to be folded. Furthermore, the second gear is driven to rotate anticlockwise, the fourth gear rotates clockwise, the second moving plate moves towards the direction close to the first moving plate, and therefore the rolling screen is driven to be folded.

In the following, the illustrated embodiment is taken as an example, wherein the first transmission member 8 is a screw and the second transmission member 9 is a gear. When the curled screen 2 is changed from the unfolded state to the contracted state, the motor 7 rotates clockwise to drive the screw to rotate clockwise, thereby driving the gear to rotate clockwise, and thus pushing the first moving plate 3 to move leftwards along the horizontal direction. The first connecting rod assembly 12 and the second connecting rod assembly 13 are further driven to be folded, and the second moving plate 4 is further driven to move close to the first moving plate 3 along the vertical direction, so that the curled screen 2 can be retracted into the shell 10. When the rolling screen 2 is changed from the contracted state to the expanded state, the motor 7 rotates counterclockwise to drive the screw to rotate counterclockwise, so that the gear is driven to rotate counterclockwise, and the first moving plate 3 is pushed to move rightward along the horizontal direction. The first link assembly 12 and the second link assembly 13 are further driven to extend, and the second moving plate 4 is further pushed to move away from the first moving plate 3 along the vertical direction, so that the curled screen 2 can be extended out of the shell 10.

Although the present disclosure has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure.

Claims

1. A folding mechanism, comprising:

a first moving plate for supporting under an object to be curled;

2. The folding mechanism of claim 1, further comprising a drive assembly coupled to the first moving plate for driving the first moving plate to move in the second direction.

3. The folding mechanism of claim 2 wherein said drive assembly includes a motor, a first drive member connected to said motor, and a second drive member connected to said first drive member, said second drive member being connected to said first moving plate;

4. The folding mechanism of claim 3 wherein said first transmission member is a threaded rod and said second transmission member is a nut adapted to said threaded rod, said threaded rod extending in said second direction; or

5. The folding mechanism of claim 1 wherein said linkage mechanism comprises:

6. The folding mechanism of claim 5, wherein said first link assembly includes:

7. The folding mechanism of claim 6, wherein:

the first moving plate is provided with a first tooth part, the first connecting rod assembly further comprises a first gear matched with the first tooth part, and the first gear is connected to the first end of the first connecting rod and connected with the first tooth part; and/or

8. The folding mechanism of claim 5, wherein said second linkage assembly includes:

a first end of the third connecting rod is hinged with the first moving plate;

9. The folding mechanism of claim 8, wherein:

the first moving plate is provided with a third tooth part, the second connecting rod assembly further comprises a third gear matched with the third tooth part, and the third gear is connected to the first end of the third connecting rod and connected with the third tooth part; and/or

10. A scrolling screen structure, comprising: a roll screen and a folding mechanism as claimed in any one of claims 1 to 9;

wherein the first moving plate is supported below the curled screen;

11. The rolling screen structure of claim 10, further comprising a shaft, wherein the second end of the rolling screen is wound around the shaft and connected to the shaft;

12. A rollable screen structure according to claim 11, wherein the spindle is located on a side of the folding mechanism remote from the rollable screen; or

13. An electronic device, comprising:

a housing;

a rolled screen construction according to any one of claims 10 to 12, provided within the housing;