Bidirectional synchronous movement type curled screen winding and unwinding device

Abstract

The utility model relates to a two-way synchronous movement type curly screen winding and unwinding device, a curly screen is divided into a display section and a hidden section, the winding and unwinding device comprises an auxiliary supporting roller and a driving assembly, and the curly screen bypasses the surface of the auxiliary supporting roller from the joint of the display section and the hidden section; the first connecting piece and the second connecting piece are connected with the display section and the hidden section respectively, and the driving component is used for driving the first connecting piece and the second connecting piece to move synchronously in the reverse direction. On one hand, through the cooperation of the first connecting piece, the second connecting piece and the auxiliary supporting roller, the curly screen can adjust the display section based on the change of the length of the hidden section, so that the deformation of the curly screen in the folding and unfolding process is effectively reduced, the production cost of the curly screen is reduced, and the service life of the curly screen is prolonged; and on the other hand, the curled screen needs a small space for folding and unfolding, and the thinning design of the electronic equipment is facilitated.

Description

Technical Field

[0001] The utility model belongs to the field of electronic product accessories, and in particular relates to a bidirectional synchronous motion type curling screen retracting and unfolding device. Background Art

[0002] As we all know, various electronic device terminals (such as mobile phones, tablets, etc.) are constantly being updated and replaced in order to display richer information to users, improve the efficiency of human-computer communication, and enhance the user experience. The screen size is getting larger and larger. Correspondingly, electronic device terminals with large screens will bring problems such as inconvenience in carrying and storing.

[0003] Therefore, in order to solve the above problems, flexible rollable screen technology came into being. It mainly works by winding the rollable screen on a scroll and releasing or rolling up the rollable screen to obtain display segments of different sizes on the screen.

[0004] However, in actual use, the existing roll-up screen needs to be repeatedly wound on or unwound from the roll-up shaft under traction during the retraction and unfolding process. Not only does the roll-up screen have a large deformation, but it also has high requirements for screen materials and high production costs, and it also requires a large design space inside the electronic device. Summary of the Invention

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an improved two-way synchronous motion curling screen retracting and unfolding device.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A bidirectional synchronous motion curling screen retraction and extension device, the curling screen is divided into a display segment and a hidden segment, the retraction and extension device includes an auxiliary support roller and a drive assembly, the curling screen is arranged around the surface of the auxiliary support roller from the connection between the display segment and the hidden segment; the drive assembly includes a first connecting member and a second connecting member respectively connected to the display segment and the hidden segment, and a driving member for driving the first connecting member and the second connecting member to move synchronously in opposite directions, wherein the first connecting member and the second connecting member respectively drive the curling screen and drive one of the display segment and the hidden segment to extend or shorten, and the other of the two to shorten or extend synchronously, and the extension and contraction amount of the display segment and the hidden segment are equal.

[0008] According to a specific embodiment and preferred aspect of the present invention, the display segment extends horizontally after bypassing the auxiliary support roller, and the display segment is fixedly connected to the first connecting member from one end away from the auxiliary support roller.

[0009] According to another specific embodiment and preferred aspect of the present invention, the hidden section bypasses the auxiliary support roller and extends obliquely before being extended horizontally, and the hidden section is fixedly connected to the second connecting member from one end away from the auxiliary support roller.

[0010] According to another specific embodiment and preferred aspect of the present invention, the retracting and unfolding device further includes a fixed base, and the auxiliary support roller is connected to the fixed base so as to rotate around its own centerline. This further reduces friction between the roll-up screen and the auxiliary support roller during retraction and unfolding, thereby reducing power consumption.

[0011] Preferably, the fixing base is formed with a guide groove extending along the direction of extension and retraction of the roll-up screen. The first connector and / or the second connector are formed with a guide portion that matches the guide groove. During retraction and extension, the guide portion is inserted into the guide groove and reciprocates along the guide groove. This ensures smooth retraction and extension of the roll-up screen, avoids deviation, and improves the quality of the roll-up screen during retraction and extension.

[0012] Specifically, there are a plurality of guide grooves, which are spaced apart and distributed perpendicular to the extension and contraction direction of the curling screen; a plurality of guide portions are formed on the first connecting member and correspond one-to-one to the plurality of guide grooves.

[0013] Preferably, the top of each guide groove is open, and when the guide part is inserted into the guide groove, the guide part is flush with the top surface of the guide groove and forms a support surface for supporting the roll-up screen. In this way, the roll-up screen can always be supported during the retraction and extension process.

[0014] Preferably, the side wall of the guide groove is also formed with a snap-in groove extending along the extension and contraction direction of the curling screen, and the side wall of the guide part forms a snap-in part matching the snap-in groove. When retracting or extending, the snap-in part is inserted into the snap-in groove and limits the guide part from shaking up and down.

[0015] According to another specific embodiment and preferred aspect of the present invention, the driving component includes a first mold base fixedly connected to the guide portion, a second mold base fixedly connected to the second connecting member, and a driving member for driving the first mold base and the second mold base to move synchronously.

[0016] Preferably, the driving member includes a first screw rod and a second screw rod respectively threadedly engaged with the first mold base and the second mold base, a motor arranged between the first screw rod and the second screw rod, and a synchronous gear set arranged between the motor output shaft and the first screw rod and the second screw rod; the first mold base, the second mold base and the driving member constitute a driving group, and there are multiple driving groups and they are distributed at intervals along the direction perpendicular to the extension and retraction direction of the curling screen.

[0017] Due to the implementation of the above technical solution, the utility model has the following advantages compared with the prior art:

[0018] During the retraction and extension process of the roll-up screen in the existing technology, the roll-up screen needs to be repeatedly wound on or unwound from the roll-up shaft under traction. Not only does the roll-up screen have a large deformation, but it also has high requirements on the screen material, high production cost, and requires a large design space. The present application has an overall design of the structure of a bidirectional synchronous motion rolling screen retracting and unfolding device, which cleverly solves the shortcomings and defects of the existing technology. After adopting the rolling screen retracting and unfolding device, when the rolling screen is unfolded, the driving component drives the first connecting member to pull the display segment of the rolling screen to extend, and at the same time, the driving component drives the second connecting member to move in the opposite direction and drive the hidden segment of the rolling screen to shorten, and keep the extension of the display segment and the shortening of the hidden segment equal; when the rolling screen is retracted, the driving component drives the second connecting member to pull the hidden segment of the rolling screen to extend, and at the same time, the driving component drives the first connecting member to move in the opposite direction and drive the display segment of the rolling screen to shorten, and keep the shortening of the display segment and the extension of the hidden segment equal; therefore, compared with the existing technology, on the one hand, the present invention can adjust the display segment based on the change in the length of the hidden segment through the cooperation of the first and second connecting members and the auxiliary support roller, thereby effectively reducing the deformation of the rolling screen during retraction, which is beneficial to reducing the production cost of the rolling screen and extending its service life; on the other hand, the space required for retracting the rolling screen is small, which is beneficial to the thinning design of electronic equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of the bidirectional synchronous motion curling screen retracting and unfolding device of the present invention;

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of the bidirectional synchronous motion curling screen retracting and unfolding device of the present invention (partially omitted);

[0022] Figure 3 for Figure 2 Schematic diagram of the structural decomposition;

[0023] Figure 4 This is a cross-sectional schematic diagram of the bidirectional synchronous motion curling screen retracting and unfolding device of the present invention (in the extended state);

[0024] Figure 5 This is a cross-sectional schematic diagram of the bidirectional synchronous motion curling screen retracting and unfolding device of the present invention (in the retracted state);

[0025] Among them: 1. Fixed seat; c. Guide groove;

[0026] 2. Auxiliary support roller;

[0027] 3. Drive assembly; 31. First connecting member; b. Guide portion; b0. Clamping portion; 32. Second connecting member; 33. Drive component; 331. First die base; 332. Second die base; 333. Drive member; d1. First screw rod; d2. Second screw rod; d3. Motor; d4. Synchronous gear set;

[0028] P, curled screen; P1, display segment; P2, hidden segment. DETAILED DESCRIPTION

[0029] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0030] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0032] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0033] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher horizontal height than the second feature. When a first feature is "below," "below," or "below" a second feature, it can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower horizontal height than the second feature. It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can be an intermediate element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there can be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0034] like Figures 1 to 5 As shown, the bidirectional synchronous motion rolling screen retracting and unfolding device involved in this embodiment includes a fixing seat 1, an auxiliary support roller 2, and a driving component 3.

[0035] Specifically, the rollable screen P involved in this embodiment is divided into a display segment P1 and a hidden segment P2 , wherein the rollable screen P is disposed around the surface of the auxiliary support roller 2 from the connection between the display segment P1 and the hidden segment P2 .

[0036] Specifically, the auxiliary support roller 2 is connected to the fixed base 1 and rotates around its own center line. As the curling screen P is retracted or extended, the auxiliary support roller 2 rotates freely to reduce the friction between the curling screen P and the auxiliary support roller 2.

[0037] In this example, the driving assembly 3 includes a first connecting member 31 and a second connecting member 32 respectively connecting the display segment P1 and the hidden segment P2, and a driving component 33 for driving the first connecting member 31 and the second connecting member 32 to move synchronously in opposite directions. The first connecting member 31 and the second connecting member 32 respectively drive the rollable screen P and drive one of the display segment P1 and the hidden segment P2 to extend or shorten, and the other to shorten or extend synchronously, and the extension and contraction amounts of the display segment P1 and the hidden segment P2 remain equal.

[0038] In some specific embodiments, the display segment P1 extends horizontally after bypassing the auxiliary support roller 2, and is fixedly connected to a first connecting member 31 at the end away from the auxiliary support roller 2. The first connecting member 31 extends along the edge of the display segment and is fixedly connected to the upper surface of the display segment. The hidden segment P2 bypasses the auxiliary support roller 2 and extends obliquely, then extends horizontally. The hidden segment P2 is fixedly connected to a second connecting member 32 at the end away from the auxiliary support roller 2. The second connecting member 32 extends along the edge of the hidden segment P2 and is fixedly connected to the upper surface of the hidden segment P2. The specific connection method is conventional and will not be described in detail here.

[0039] For the convenience of implementation, a guide groove c extending along the extension and retraction direction of the curling screen P is formed on the fixing seat 1, and a guide portion b matching the guide groove c is formed on the first connecting member 31 and / or the second connecting member 32. When retracting or extending, the guide portion b is inserted into the guide groove c and reciprocates along the guide groove c.

[0040] In some specific embodiments, there are multiple guide grooves c, which are spaced apart at the top of the fixing seat 1 along a direction perpendicular to the extension and retraction direction of the curling screen; a plurality of guide portions b are formed on the first connecting member 31 and correspond one-to-one to the multiple guide grooves c; the top of each guide groove c is open, and when the guide portion b is inserted into the guide groove c, the guide portion b is flush with the top surface of the guide groove c and constitutes a support surface for supporting the curling screen; the side wall of the guide groove c is also formed with a snap-fit ​​groove extending along the extension and retraction direction of the curling screen, and the side wall of the guide portion b forms a snap-fit ​​portion b0 that matches the snap-fit ​​groove. When retracting and extending, the snap-fit ​​portion b0 is inserted into the snap-fit ​​groove and limits the guide portion b0 from shaking up and down.

[0041] In this example, the driving component 33 includes a first mold base 331 fixedly connected to the guide portion b, a second mold base 332 fixedly connected to the second connecting member 32, and a driving member 333 for driving the first mold base 331 and the second mold base 332 to move synchronously.

[0042] In some specific embodiments, the driving member 333 includes a first screw rod d1 and a second screw rod d2 that are threadedly engaged with the first mold base 331 and the second mold base 332, respectively, a motor d3 arranged between the first screw rod d1 and the second screw rod d2, and a synchronous gear set d4 arranged between the output shaft of the motor d3 and the first screw rod d1 and the second screw rod d2. Under the transmission of the synchronous gear set d4, the first screw rod d1 and the second screw rod d2 rotate synchronously and drive the first mold base 331 and the second mold base 332 to move synchronously; the first mold base 331, the second mold base 332 and the driving member 333 constitute a driving group, and there are multiple driving groups that are spaced apart along a direction perpendicular to the extension and retraction direction of the curling screen.

[0043] In summary, after adopting the rolling screen retracting device, when the rolling screen is unfolded, the driving component drives the first connecting member to pull the display segment of the rolling screen to extend, and at the same time, the driving component drives the second connecting member to move in the opposite direction and drive the hidden segment of the rolling screen to shorten, and keep the extension amount of the display segment and the shortening amount of the hidden segment equal; when the rolling screen is retracted, the driving component drives the second connecting member to pull the hidden segment of the rolling screen to extend, and at the same time, the driving component drives the first connecting member to move in the opposite direction and drive the display segment of the rolling screen to shorten, and keep the shortening amount of the display segment and the extension amount of the hidden segment equal; therefore, compared with the prior art, the present invention has an advantage in that, on the one hand, the first and second connecting members are connected, and the second and third connecting members are connected. With the cooperation of the two connecting parts and the auxiliary support roller, the curling screen can adjust the display segment based on the change of the length of the hidden segment, thereby effectively reducing the deformation of the curling screen during retraction and extension, which is beneficial to reducing the production cost of the curling screen and extending its service life; on the other hand, the space required for retraction of the curling screen is small, which is beneficial to the thinning design of electronic equipment; thirdly, the friction between the curling screen and the auxiliary support roller during retraction is further reduced, thereby reducing power consumption; fourthly, it can ensure that the curling screen is retracted and extended smoothly, avoid offset, and improve the texture of the curling screen when it is retracted and extended; fifthly, the curling screen can always provide support during the retraction and extension process.

[0044] The above detailed description of the utility model is intended to enable people familiar with the technology in this field to understand the content of the utility model and implement it. It is not intended to limit the scope of protection of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the scope of protection of the utility model.

Claims

1. A bidirectional synchronous motion rolling screen retracting and extending device, wherein the rolling screen is divided into a display section and a hidden section, characterized in that: The retracting and extending device includes an auxiliary support roller and a drive assembly, and the curling screen is arranged around the surface of the auxiliary support roller from the junction of the display segment and the hidden segment; the drive assembly includes a first connecting member and a second connecting member respectively connected to the display segment and the hidden segment, and a driving component for driving the first connecting member and the second connecting member to move synchronously in opposite directions, wherein the first connecting member and the second connecting member respectively drive the curling screen and drive one of the display segment and the hidden segment to extend or shorten, and the other of the two to shorten or extend synchronously, and the extension and contraction amounts of the display segment and the hidden segment are equal.

2. The bidirectional synchronous motion roll-up screen retracting and unfolding device according to claim 1, characterized in that: The display segment is horizontally extended after bypassing the auxiliary support roller, and the display segment is fixedly connected to the first connecting member from one end away from the auxiliary support roller.

3. The bidirectional synchronous motion roll-up screen retracting and unfolding device according to claim 1, characterized in that: The hidden section bypasses the auxiliary support roller and extends obliquely before being horizontally extended. The hidden section is fixedly connected to the second connecting member from one end away from the auxiliary support roller.

4. The bidirectional synchronous motion roll-up screen retracting and unfolding device according to claim 1, characterized in that: The retracting and unfolding device further comprises a fixing seat, and the auxiliary supporting roller is connected to the fixing seat in a manner of rotating around its own center line.

5. The bidirectional synchronous motion roll-up screen retracting and unfolding device according to claim 4, characterized in that: A guide groove extending along the extension and retraction direction of the curling screen is formed on the fixing seat, and a guide portion matching the guide groove is formed on the first connecting member and / or the second connecting member. When retracting or extending, the guide portion is inserted into the guide groove and reciprocates along the guide groove.

6. The bidirectional synchronous motion roll-up screen retracting and unfolding device according to claim 5, characterized in that: There are a plurality of guide grooves, which are spaced apart and distributed along a direction perpendicular to the extension and contraction direction of the curling screen; a plurality of guide parts are formed on the first connecting member and correspond one-to-one to the plurality of guide grooves.

7. The bidirectional synchronous motion roll-up screen retracting and unfolding device according to claim 6, characterized in that: The top of each guide groove is open. When the guide portion is inserted into the guide groove, the guide portion is flush with the top surface of the guide groove and forms a supporting surface for supporting the curling screen.

8. The bidirectional synchronous motion rolling screen retracting and unfolding device according to claim 6 or 7, characterized in that: The side wall of the guide groove is also formed with a snap-in groove extending along the extension and retraction direction of the curling screen. The side wall of the guide part is formed with a snap-in part matching the snap-in groove. When retracting or extending, the snap-in part is inserted into the snap-in groove and limits the guide part from shaking up and down.

9. The bidirectional synchronous motion roll-up screen retracting and unfolding device according to claim 6, characterized in that: The driving component includes a first mold base fixedly connected to the guide portion, a second mold base fixedly connected to the second connecting member, and a driving member for driving the first mold base and the second mold base to move synchronously.

10. The bidirectional synchronous motion roll-up screen retracting and unfolding device according to claim 9, characterized in that: The driving member includes a first screw rod and a second screw rod respectively threadedly matched with the first die base and the second die base, a motor arranged between the first screw rod and the second screw rod, and a synchronous gear set arranged between the motor output shaft and the first screw rod and the second screw rod; The first mold base, the second mold base and the driving member constitute a driving group. There are multiple driving groups and they are distributed at intervals along a direction perpendicular to the expansion and contraction direction of the curling screen.

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