CN215220114U - Transmission structure and have its flexible screen - Google Patents

Abstract

The utility model relates to a screen technical field, concretely relates to transmission structure and have its flexible screen, this transmission structure includes: the output end of the first telescopic mechanism is provided with a first connecting part which is used for connecting one end of the component to be telescopic; the second telescopic mechanism is arranged in parallel with the first telescopic mechanism, and the output end of the second telescopic mechanism is provided with a second connecting part used for being connected with the other end of the component to be telescopic; the first telescopic mechanism and the second telescopic mechanism are arranged oppositely; under the combined action of the first telescopic mechanism and the second telescopic mechanism, when the first connecting part and the second connecting part are driven to move in the opposite direction or the opposite direction, the assembly to be telescopic is contracted or expanded; treat flexible subassembly promptly for the screen subassembly when being applied to flexible screen with transmission structure to sum up, adopt the cooperation of above-mentioned structure to realize setting up the screen of current mobile intelligent equipment into flexible design to satisfy the demand that large screen shows and little screen carried.

Description

Transmission structure and have its flexible screen

Technical Field

The utility model relates to a screen technical field, concretely relates to transmission structure and have its flexible screen.

Background

Along with the development of science and technology and the improvement of people's standard of living, mobile intelligent equipment (like smart mobile phone, panel computer etc.) has become indispensable communication and entertainment tool in people's daily life gradually, and mobile intelligent equipment all has the display screen of being convenient for control, and along with the promotion of people's demand, its intelligent degree is also higher and higher, for example: the application of the mobile phone is not limited to the conventional application of communication and short message sending, the situations of entertainment and even office work are more and more, the size of the display screen of the mobile phone greatly restricts the development of the mobile phone, and the entertainment of the mobile phone is reduced, so that many people are more loved on large-screen mobile phones at present.

However, the large-screen mobile intelligent device in the prior art occupies a large space due to the large overall size, and is inconvenient for people to carry.

SUMMERY OF THE UTILITY MODEL

An object of this application is to provide a transmission structure and have its flexible screen to solve among the prior art large screen mobile intelligent device because its whole size is great, lead to occupying great space and inconvenient people go out the problem of carrying.

Technical scheme (I)

To achieve the above object, the present invention provides in a first aspect a transmission structure, including:

the output end of the first telescopic mechanism is provided with a first connecting part which is used for connecting one end of the component to be telescopic;

the second telescopic mechanism is arranged in parallel with the first telescopic mechanism, and the output end of the second telescopic mechanism is provided with a second connecting part used for being connected with the other end of the component to be telescopic;

the first telescopic mechanism and the second telescopic mechanism are arranged oppositely; under the combined action of the first telescopic mechanism and the second telescopic mechanism, when the first connecting part and the second connecting part are driven to move oppositely, the assembly to be telescopic is contracted; when the first connecting part and the second connecting part are driven to move back to back, the component to be retracted is expanded.

Optionally, the transmission structure further includes:

the protective shell is used for mounting the first telescopic mechanism and the second telescopic mechanism;

and the power mechanism is in transmission connection with the first telescopic mechanism and the second telescopic mechanism through a gear set so as to drive the first telescopic mechanism and the second telescopic mechanism to simultaneously perform reverse motion, so that the first connecting part and the second connecting part correspondingly perform opposite or back motion along the length directions of the first telescopic mechanism and the second telescopic mechanism.

Optionally, the first telescopic mechanism and the second telescopic mechanism are provided as two lead screws with opposite rotation directions, and the first connecting part and the second connecting part are both rotatably connected with the corresponding lead screws;

and/or, the positions corresponding to the first connecting part and the second connecting part in the protective shell are respectively provided with a limiting mechanism.

Optionally, the power mechanism is set as a driving motor and is arranged in parallel or perpendicular to the first telescopic mechanism.

Optionally, the transmission structure further includes: the guide rod with first telescopic machanism and/or second telescopic machanism parallel arrangement, and both ends all with protective housing fixed connection, the one end of first connecting portion and/or second connecting portion with the guide rod cover is established and is connected.

Optionally, the gear set includes: the driving gear is connected with the output end of the power mechanism, and the first transmission gear and the second transmission gear are connected with the corresponding first telescopic mechanism and the second telescopic mechanism.

Optionally, the transmission ratio of the first transmission gear to the second transmission gear is 1: 1.

Optionally, the gear set further includes: the other end of the third transmission gear is meshed with the driving gear, and the other end of the fourth transmission gear is meshed with the first transmission gear.

Optionally, an auxiliary connecting portion is convexly disposed on an outer side of the first connecting portion and/or the second connecting portion.

In order to achieve the above object, the second aspect of the present invention provides a retractable screen, including: a screen assembly and a transmission structure as described in any one of the preceding; one end of the screen assembly is connected with the first connecting part of the transmission structure, and the other end of the screen assembly is connected with the second connecting part of the transmission structure; under the drive of the transmission structure, the screen assembly is driven to do reciprocating motion of contraction or expansion.

(II) advantageous effects

Compared with the prior art, the utility model, following beneficial effect has:

the utility model provides a transmission structure and have its flexible screen, this transmission structure includes: the output end of the first telescopic mechanism is provided with a first connecting part which is used for connecting one end of the component to be telescopic; the second telescopic mechanism is arranged in parallel with the first telescopic mechanism, and the output end of the second telescopic mechanism is provided with a second connecting part used for being connected with the other end of the component to be telescopic; the first telescopic mechanism and the second telescopic mechanism are arranged oppositely; under the combined action of the first telescopic mechanism and the second telescopic mechanism, when the first connecting part and the second connecting part are driven to move oppositely, the assembly to be telescopic is contracted; when the first connecting part and the second connecting part are driven to move back to back, the component to be retracted is expanded.

When the transmission structure is applied to a telescopic screen, a component to be stretched is a screen component, when large-screen display is needed, the first connecting part and the second connecting part are driven to move back to back only under the combined action of the first stretching mechanism and the second stretching mechanism until the screen component is completely stretched, and similarly, when a small screen is needed to be stored, the first connecting part and the second connecting part are driven to move in opposite directions only under the combined action of the first stretching mechanism and the second stretching mechanism until the screen component is completely contracted; in conclusion, adopt the cooperation of above-mentioned structure to realize setting up the screen of current mobile intelligent equipment into flexible design to satisfy the demand that big screen display and little screen carried.

Drawings

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

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained without inventive exercise, wherein:

fig. 1 is a schematic structural view of a transmission structure with a protective shell removed according to one embodiment of the present invention;

fig. 2 is a schematic structural diagram illustrating the cooperation of a power mechanism and a gear set according to one embodiment of the present invention;

fig. 3 is a perspective view of one embodiment of the present invention showing a transmission structure;

fig. 4 is a schematic structural view of another embodiment of the present invention showing the transmission structure with the protective shell removed;

fig. 5 is a schematic diagram of another embodiment of the present invention showing the power mechanism cooperating with a gear set;

fig. 6 is a perspective view of another embodiment of the present invention showing a transmission structure;

fig. 7 is a schematic structural diagram of an auxiliary connection portion according to one embodiment of the present invention.

In the figure: 1. a first telescoping mechanism; 2. a first connection portion; 3. a second telescoping mechanism; 4. a second connecting portion; 5. a power mechanism; 6. a guide bar; 7. a drive gear; 8. a first drive gear; 9. a second transmission gear; 10. a third transmission gear; 11. a fourth transmission gear; 12. an auxiliary connection part; 13. a cover plate; 14. a housing.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The invention will be described in further detail with reference to the following drawings and embodiments:

in order to solve large screen mobile intelligent equipment because its whole size is great, lead to occupying great space and inconvenient people go out the technical problem who carries, this application provides a flexible screen, includes: a screen assembly and a transmission structure; two ends of the screen component are respectively connected with the transmission structure; under the drive of the transmission structure, the screen component is driven to do reciprocating motion of contraction or expansion.

The structure of the transmission structure is described in detail below with reference to the accompanying drawings:

as shown in fig. 1-7, the present application provides a transmission structure comprising: the output end of the first telescopic mechanism 1 is provided with a first connecting part 2 which is used for connecting one end of a component to be telescopic; wherein, in order to guarantee the stability of connecting, first connecting portion 2 and treat and can adopt fixed connection between the flexible subassembly, for example, welding or riveting etc., of course, in order to facilitate treating flexible subassembly and maintain and change, preferably, first connecting portion 2 and treat and can adopt between the flexible subassembly and dismantle the connection, for example, can adopt the cooperation of arch and draw-in groove, it is concrete, be equipped with the arch on first connecting portion 2, treat that flexible subassembly and first connecting portion 2 matched with position are equipped with the draw-in groove, first connecting portion 2 and treat and realize stable connection through the cooperation between draw-in groove and the arch between the flexible subassembly, of course, first connecting portion 2 and treat and can also adopt magnetism between the flexible subassembly to inhale the cooperation, and other can realize dismantling the cooperation structure of connecting, this application does not specifically prescribe a limit, all belong to the protection scope of this application.

The second telescopic mechanism 3 is arranged in parallel with the first telescopic mechanism 1, and the output end of the second telescopic mechanism is provided with a second connecting part 4 which is used for connecting the other end of the component to be telescopic; similarly, the second connecting portion 4 and the component to be retracted may be fixedly connected or detachably connected, wherein the fixed connection manner and the detachable connection manner are referred to above and are not described herein again; in addition, specifically, first connecting portion 2 and second connecting portion 4 can set up to connecting block or clamping jaw, or other and treat other structures of flexible subassembly shape looks adaptation, when setting up to the connecting block, in order to guarantee with the stability of treating flexible subassembly to be connected, the connecting block sets up to planar structure with the wall of treating flexible subassembly matched with.

As shown in fig. 1, the first telescoping mechanism 1 and the second telescoping mechanism 3 are disposed oppositely, that is, the output end of the first telescoping mechanism 1 and the output end of the second telescoping mechanism 3 are also disposed oppositely; under the combined action of the first telescopic mechanism 1 and the second telescopic mechanism 3, when the first connecting part 2 and the second connecting part 4 are driven to move oppositely, the component to be telescopic is contracted; when the first connecting part 2 and the second connecting part 4 are driven to move back to back, the component to be stretched is unfolded; further, in order to ensure that the expansion or contraction rates of the sides of the components to be retracted are equal, it is preferable that the retraction rates and ranges of the first retraction mechanism 1 and the second retraction mechanism 3 are equal.

Specifically, as shown in fig. 3 and 6, the transmission structure further includes: the protective housing for install first telescopic machanism 1 and second telescopic machanism 3, and the protective housing includes: the shell 14 and the cover plate 13, specifically, the first telescoping mechanism 1 and the second telescoping mechanism 3 are both mounted on the shell 14 and protected by the cover plate 13, and more specifically, the first connecting portion 2 is disposed at one end of the shell 14 through the first telescoping mechanism 1, and the second connecting portion 4 is disposed at the other end of the shell 14 through the second telescoping mechanism 3, so as to provide a space for the two to move in opposite directions or in a back direction, and in addition, when the first connecting portion 2 and the second connecting portion move in opposite directions to the middle of the shell 14, the first telescoping mechanism 1 and the second telescoping mechanism 3 rotate in opposite directions, so that the first connecting portion 2 and the second connecting portion 4 can move in a back direction until the first connecting portion and the second connecting portion move to the two ends of the shell 14; in addition, in order to facilitate maintenance and replacement of parts such as the first telescopic mechanism 1 and the second telescopic mechanism 3, the shell 14 and the cover plate 13 can be connected in a buckling manner, or clamping can be realized through matching of a clamping groove and a buckle, and connection and fixation can be realized through screws; of course, in order to ensure the waterproof performance, the housing 14 and the cover plate 13 may be fixedly connected by welding or the like.

Exemplarily, when the transmission structure is applied to a telescopic screen, a component to be stretched is a screen component, and at the moment, two ends of the screen component are respectively connected with the first connecting part 2 and the second connecting part 4, so that when a large screen is required to be displayed, the first connecting part 2 and the second connecting part 4 are driven to move in a back direction only under the combined action of the first stretching mechanism 1 and the second stretching mechanism 3 until the screen component is completely stretched; to sum up, adopt the cooperation of above-mentioned structure to realize setting up the screen of current mobile intelligent equipment into flexible design to satisfy the demand that big screen display and little screen carried.

In a specific embodiment, as shown in fig. 3, the screen assembly may be configured as a flexible screen, and a rotating shaft cooperating with the transmission structure is disposed in a direction away from the cover plate 13 of the housing 14, specifically, the flexible screen includes an extension end serving as a main screen and a free end moving in the mobile intelligent device housing and selectively serving as a telescopic screen, and preferably, a support frame is disposed at the bottom of the extension end; during assembly, the extending end of the flexible screen is connected with the second connecting part 4 through the supporting frame, and the free end of the flexible screen bypasses the rotating shaft to be connected with the first connecting part 2; when large-screen display is needed, only under the combined action of the first telescopic mechanism 1 and the second telescopic mechanism 3, the first connecting part 2 and the second connecting part 4 are driven to move back to back, as shown in fig. 3, the second connecting part 4 moves towards the direction close to the cover plate 13, the first connecting part 2 moves towards the direction far away from the cover plate 13, so that the free end contained in the mobile intelligent device shell extends out of the mobile intelligent device shell and is used as a display screen together with the extending end, thereby realizing large-screen display, and similarly, when small-screen display is needed for carrying, the first connecting part 2 and the second connecting part 4 are driven to move towards each other only under the combined action of the first telescopic mechanism 1 and the second telescopic mechanism 3, second connecting portion 4 is to the direction motion of keeping away from apron 13, and first connecting portion 2 is to the direction motion of being close to apron 13 to make the free end that stretches out get back to once more in the mobile intelligent device casing can, at this moment, only extend the end and use as the display screen, thereby realize the small-size screen and show.

In another specific embodiment, the screen assembly may be configured as two parts, one part is configured as a main screen, the other part is configured as a secondary screen, a receiving cavity for receiving the secondary screen is formed between the main screen and the mobile intelligent device housing, the first connecting portion 2 is connected with the main screen, the second connecting portion 4 is connected with the secondary screen, when a large screen display is required, under the action of the first telescoping mechanism 1 and the second telescoping mechanism 3, the first connecting portion 2 and the second connecting portion 4 are driven to move back and forth, so that the secondary screen extends out of the receiving cavity, and is displayed as a display screen together with the main screen, similarly, when a small screen display is required, under the action of the first telescoping mechanism 1 and the second telescoping mechanism 3, the first connecting portion 2 and the second connecting portion 4 are driven to move in opposite directions, so that the secondary screen retracts into the receiving cavity, and is displayed only through the main screen at this time, so as to realize the small screen display and convenient carrying.

Of course, the screen component is not limited to the above two designs, and any screen component design on the market can be adopted, and the screen component is not specifically limited in this embodiment, so long as the screen component capable of realizing screen size switching is suitable for the present application.

In summary, in the foregoing embodiments, in order to avoid the component to be retracted or expanded excessively, the positions in the protective casing corresponding to the first connecting portion 2 and the second connecting portion 4 are respectively provided with a limiting mechanism, specifically, the positions on the casing 14 corresponding to the first connecting portion 2 and the second connecting portion 4 are respectively provided with a limiting mechanism, in a preferred embodiment, as shown in fig. 3, two opposite wall surfaces of the casing 14 are respectively provided with an opening, the first connecting portion 2 and the second connecting portion 4 are correspondingly installed in the opening, wherein the two corresponding wall surfaces of the opening are the limiting mechanisms, so as to avoid the component to be retracted or expanded excessively due to excessive movement of the first connecting portion and the second connecting portion; in another preferred embodiment, in order to improve the automation control, the limit mechanisms are provided as a first travel switch and a second travel switch, specifically, the first travel switch and the second travel switch are respectively provided on the housing 14 at a position where the first connection portion 2 and the second connection portion 4 are in contact, for example, in the process of expanding or contracting the component to be contracted, when the first connection portion 2 is in contact with the first travel switch provided on the housing 14, it is indicated that the component to be contracted is completely expanded or contracted at this time, the power supply of the first telescopic mechanism 1 and the second telescopic mechanism 3 is directly cut off by the controller, when the component to be contracted or expanded is contracted again, only the controller needs to reversely drive the first telescopic mechanism 1 and the second telescopic mechanism 3 again, the matching process of the second connection portion 4 and the second travel switch is the same as that described above, therefore, it will not be described herein in detail.

Of course, the above-mentioned transmission structure is not limited to be applied to the telescopic screen, but can be applied to other fields, for example, when the transmission structure is applied to the field of the blind, correspondingly, the component to be retracted is the shutter component, when the shutter component needs to be opened, the first connecting part 2 and the second connecting part 4 are driven to move in the back direction only under the combined action of the first retracting mechanism 1 and the second retracting mechanism 3 until the shutter component is completely unfolded, and similarly, when the shutter assembly is closed, the first connecting part 2 and the second connecting part 4 are driven to move oppositely only under the combined action of the first telescopic mechanism 1 and the second telescopic mechanism 3 until the shutter assembly is completely contracted, and similarly, when the transmission structure is applied to the field of roller shutters, correspondingly, the component to be stretched is the roller shutter door, and specifically, two ends of the roller shutter door are respectively connected with the first connecting part 2 and the second connecting part 4; other application scenarios are similar to the above, and therefore are not described herein in detail, in summary, the application scenario of the transmission structure is not limited in the present application, and the transmission structure required by the present application can be adopted as long as the application scenario in which the telescopic assembly is to be retracted and extended can be realized.

According to the utility model discloses an embodiment, as shown in FIG. 1, in order to guarantee to treat the stability of flexible subassembly when carrying out expansion or shrink motion, transmission structure still includes: the guide rod 6 is arranged in parallel with the first telescopic mechanism 1 and/or the second telescopic mechanism 3, and two ends of the guide rod 6 are fixedly connected with the protective shell; specifically, both ends are fixedly connected with the shell 14 and are protected by the cover plate 13; one end of the first connecting part 2 and/or one end of the second connecting part 4 are/is sleeved and connected with the guide rod 6; preferably, the number of the guide rods 6 is at least two, one end of each of the first connecting portion 2 and the second connecting portion 4 is sleeved with the corresponding guide rod 6, theoretically, the more the number of the guide rods 6 is, the higher the motion stability of the assembly to be retracted is, and in this embodiment, the number of the guide rods 6 is two, and the corresponding guide rods are arranged in parallel with the first retracting mechanism 1 and the second retracting mechanism 3.

According to one embodiment of the present invention, the first telescoping mechanism 1 and the second telescoping mechanism 3 are two oppositely disposed cylinders, and the first connecting portion 2 and the second connecting portion 4 are both connected to the piston end of the cylinder; specifically, the piston end of the first cylinder is arranged on one side close to the cover plate 13, the piston end of the second cylinder is arranged on one end far away from the cover plate 13, when large-screen display is needed, only the first cylinder and the second cylinder need to be driven, at the moment, the piston ends of the first cylinder and the second cylinder both move towards the direction extending out of the cylinders, so that the first connecting portion 2 and the second connecting portion 4 are pushed to move backwards to unfold the screen assembly, and similarly, when small-screen display is needed, only the first cylinder and the second cylinder need to be driven again, at the moment, the piston ends of the first cylinder and the second cylinder both move towards the direction retracting into the cylinders, so that the first connecting portion 2 and the second connecting portion 4 are pushed to move towards each other to retract the screen assembly; the first telescopic mechanism 1 and the second telescopic mechanism 3 are not limited to the cylinder structure, and may be a telescopic rod or an electric push rod, etc., and in this embodiment, no specific limitation is made on the telescopic rod or the electric push rod.

According to the utility model discloses in another embodiment, transmission structure still includes: the power mechanism 5 is preferably arranged as a driving motor and is arranged in parallel or perpendicular to the first telescopic mechanism 1, and when the power mechanism 5 is arranged in parallel with the first telescopic mechanism 1, the transmission structure can be ensured to be compact, the occupied space is reduced, and the miniaturization is realized; of course, the power mechanism 5 can also be connected with the connecting port through the terminal wire/FPC to provide driving force for the gear set; the first telescopic mechanism 1 and the second telescopic mechanism 3 are in transmission connection through a gear set so as to drive the first telescopic mechanism 1 and the second telescopic mechanism 3 to simultaneously perform reverse motion, so that the first connecting part 2 and the second connecting part 4 correspondingly perform opposite or back motion along the length direction of the first telescopic mechanism 1 and the second telescopic mechanism 3; in order to ensure that the first telescoping mechanism 1 and the second telescoping mechanism 3 rotate more smoothly, it is preferable that a bearing assembly is additionally arranged at a joint of the two telescoping mechanisms and the housing 14, and further, only parts which move relative to the housing 14 need to be additionally arranged at a position matched with the housing 14, wherein the bearing assembly can be a rolling bearing or a sliding bearing, so that friction is reduced, and transmission efficiency is improved.

In a preferred embodiment, the first telescoping mechanism 1 and the second telescoping mechanism 3 are provided as two screws with opposite rotation directions, and the first connecting portion 2 and the second connecting portion 4 are both rotatably connected with the corresponding screws, specifically, the gear set includes: the driving gear 7, the first transmission gear 8 and the second transmission gear 9 are sequentially meshed, the driving gear 7 is connected with the output end of the power mechanism 5, and the first transmission gear 8 and the second transmission gear 9 are connected with the corresponding first telescopic mechanism 1 and the second telescopic mechanism 3; preferably, the transmission ratio of the first transmission gear 8 and the second transmission gear 9 is 1:1, of course, the transmission ratio of the two may be different, for example, 1: 2, the two ends of the component to be stretched are different in stretching or stretching speed, and the specific transmission ratio can be preset according to the requirement; in addition, other transmission gears can be additionally arranged between the first transmission gear 8 and the second transmission gear 9 to ensure that the first transmission gear 8 and the second transmission gear 9 synchronously and stably rotate in opposite directions, so that the number of the gear sets is not specifically limited in the application, and the specific number can be designed in advance according to needs.

Specifically, as shown in fig. 1 and 3, when the driving motor is disposed in parallel with the first retracting mechanism 1, the gear sets are all provided as spur gears, and as shown in fig. 4 and 6, when the driving motor is disposed perpendicularly to the first retracting mechanism 1, the driving gear 7 is provided as a spur gear, and a gear engaged with the driving gear 7 is provided as a face gear; for example, the driving motor and the first telescoping mechanism 1 are arranged in parallel, as shown in fig. 2, when the driving motor rotates forward, the first transmission gear 8 is driven to rotate counterclockwise to drive the first lead screw connected thereto to rotate counterclockwise, so as to drive the first connecting portion 2 connected thereto to move away from the cover plate 13 along the length direction of the first lead screw; meanwhile, under the action of the first transmission gear 8, the second transmission gear 9 is driven to rotate clockwise so as to drive the second screw rod connected with the second transmission gear to rotate clockwise, so that the second connecting part 4 connected with the second transmission gear is driven to move towards the cover plate 13 along the length direction of the second screw rod, in sum, the first connecting part 2 and the second connecting part 4 move oppositely, so that the screen assembly is contracted, and small-screen display is realized; similarly, when the driving motor rotates reversely, the first transmission gear 8 is driven to rotate clockwise to drive the first screw rod connected with the first transmission gear to rotate clockwise, so that the first connecting part 2 connected with the first screw rod is driven to move towards the cover plate 13 along the length direction of the first screw rod; meanwhile, under the action of the first transmission gear 8, the second transmission gear 9 is driven to rotate anticlockwise so as to drive the second screw rod connected with the second transmission gear to rotate anticlockwise, so that the second connecting part 4 connected with the second transmission gear is driven to move far away from the cover plate 13 along the length direction of the second screw rod, and in sum, the first connecting part 2 and the second connecting part 4 move backwards to unfold the screen assembly and realize large-screen display; as shown in fig. 4 and 6, the operation process of the driving motor and the first telescoping mechanism 1 vertically arranged is similar to the above, and therefore, the detailed description thereof is omitted.

To sum up, this embodiment passes through two lead screws of gear train drive and rotates simultaneously through power unit 5 to realize driving first connecting portion 2 and second connecting portion 4 simultaneously and carry out motion in opposite directions or dorsad, and then realize that the both ends of screen subassembly move simultaneously, thereby effectively avoid the screen subassembly to shrink or expand the action and produce the crease, guarantee reliability and stability.

In a preferred embodiment, in order to further ensure the stability of the rotation of the gears, as shown in fig. 2 and 5, the gear set further includes: the other end of the third transmission gear 10 is meshed with the driving gear 7, and the other end of the fourth transmission gear 11 is meshed with the first transmission gear 8, as shown in fig. 2, when the driving motor rotates forwards, the third transmission gear 10 is driven to rotate anticlockwise, the fourth transmission gear 11 is driven to rotate clockwise under the action of the third transmission gear 10, the first transmission gear 8 is driven to rotate anticlockwise under the action of the fourth transmission gear 11, so that the first lead screw connected with the first transmission gear is driven to rotate anticlockwise, and the first connecting part 2 connected with the first transmission gear is driven to move in a direction away from the cover plate 13; meanwhile, under the action of the first transmission gear 8, the second transmission gear 9 is driven to rotate clockwise so as to drive the second screw rod connected with the second transmission gear to rotate clockwise, so that the second connecting part 4 connected with the second transmission gear is driven to move towards the direction close to the cover plate 13, and in sum, the first connecting part 2 and the second connecting part 4 move towards each other so as to shrink the screen assembly and realize small-screen display; similarly, the process of displaying the large screen is opposite to the adjustment process, and therefore, the description thereof is not repeated herein.

The gear set is only for facilitating understanding of how to realize reverse rotation of the two screw rods so as to realize opposite or back movement of the first connecting portion 2 and the second connecting portion 4 and contraction or expansion of the screen assembly, and is exemplified.

In another preferred embodiment, the first telescoping mechanism 1 and the second telescoping mechanism 3 are both provided as a rack structure, the first connecting portion 2 and the second connecting portion 4 are both fixedly connected to the corresponding rack structure, and in order to drive the two rack structures to perform linear motions in opposite directions or in opposite directions, so that the first connecting portion 2 and the second connecting portion 4 synchronously perform linear motions in opposite directions or in opposite directions, the gear set further includes: first flexible drive gear 7 with the perpendicular meshing of first drive gear 8 to and the second flexible drive gear 7 with the perpendicular meshing of second drive gear 9, wherein, first flexible drive gear 7 meshes with first rack structure mutually, and second flexible drive gear 7 meshes with second rack structure mutually, and specific working process is as follows:

as shown in fig. 2, when the driving motor rotates forward, the first transmission gear 8 is driven to rotate counterclockwise to drive the first telescopic driving gear 7 connected with the first transmission gear to rotate clockwise, so as to drive the first rack structure engaged with the first transmission gear to drive the first connecting portion 2 connected with the first transmission gear to move linearly in a direction away from the cover plate 13; meanwhile, under the action of the first transmission gear 8, the second transmission gear 9 is driven to rotate clockwise to drive the first telescopic driving gear 7 connected with the second transmission gear to rotate anticlockwise, so that the first rack structure meshed with the second transmission gear drives the first connecting part 2 connected with the first transmission gear to move linearly in a direction close to the cover plate 13, and in sum, the first connecting part 2 and the second connecting part 4 move oppositely to shrink the screen assembly, so that small-screen display is realized; similarly, when the driving motor rotates reversely, the first transmission gear 8 is driven to rotate clockwise to drive the first telescopic driving gear 7 connected with the first transmission gear to rotate anticlockwise, so that the first rack structure meshed with the first transmission gear is driven to drive the first connecting part 2 connected with the first transmission gear to move linearly in a direction close to the cover plate 13; meanwhile, under the action of the first transmission gear 8, the second transmission gear 9 is driven to rotate anticlockwise so as to drive the first telescopic driving gear 7 connected with the second transmission gear to rotate clockwise, so that the first rack structure meshed with the first transmission gear is driven to drive the first connecting part 2 connected with the first transmission gear to move linearly in a direction away from the cover plate 13, and in sum, the first connecting part 2 and the second connecting part 4 move backwards to unfold the screen assembly and realize large-screen display; the arrangement of the gear set is the same as that of the previous embodiment, and therefore, will not be described herein.

According to an embodiment of the present invention, in order to facilitate the assembly of the first connecting portion 2 and the second connecting portion 4 with the component to be retracted, as shown in fig. 6 and 7, an auxiliary connecting portion 12 is protruded outside the first connecting portion 2 and/or the second connecting portion 4; in the embodiment, in order to ensure the stability of connection, the outer sides of the first connecting part 2 and the second connecting part 4 are both convexly provided with auxiliary connecting parts 12, and the auxiliary connecting parts 12 are preferably provided as convex ridges or connecting blocks; in order to reduce the processing difficulty, the first connecting part 2 and/or the second connecting part 4 can be designed to be integrally formed; preferably, the shape of the auxiliary connection 12 is adapted to the shape of the component to be retracted.

Further, in order to realize that the auxiliary connecting part 12 is replaced correspondingly according to the shape of the component to be stretched, the auxiliary connecting part 12 is detachably connected with the first connecting part 2 and/or the second connecting part 4 through a mounting structure, for example, when the component to be stretched is a curved screen, the arc-shaped auxiliary connecting part 12 is correspondingly mounted on the first connecting part 2 and the second connecting part 4; specifically, the mounting structure includes: the first mounting part and the second mounting part are installed on the auxiliary connecting part 12, and the other is installed on the first connecting part 2 and the second connecting part 4, for example, the first mounting part is configured as a protrusion, and the second mounting part is configured as a groove, in this embodiment, the first mounting part is installed on the auxiliary connecting part 12 and configured as a protrusion, and the second mounting part is installed on the first connecting part 2 and the second connecting part 4 and configured as a groove, and the detachable connection between the auxiliary connecting part 12 and the first connecting part 2 and the second connecting part 4 can be realized by the cooperation between the protrusion and the groove.

The embodiments in the present description are all described in a progressive manner, and some of the embodiments are mainly described as different from other embodiments, and the same and similar parts among the embodiments can be referred to each other.

It is noted that in the description and claims of the present application and in the above-mentioned drawings, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.

Also, the terms "comprises," "comprising," and "having," as well as any variations thereof or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The foregoing are merely exemplary embodiments of the present application and are presented to enable those skilled in the art to understand and practice the present application. Various modifications and changes to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A transmission structure, comprising:

the output end of the first telescopic mechanism (1) is provided with a first connecting part (2) which is used for being connected with one end of a component to be telescopic;

the second telescopic mechanism (3) is arranged in parallel with the first telescopic mechanism (1), and the output end of the second telescopic mechanism is provided with a second connecting part (4) which is used for being connected with the other end of the component to be telescopic;

the first telescopic mechanism (1) and the second telescopic mechanism (3) are arranged oppositely; under the combined action of the first telescopic mechanism (1) and the second telescopic mechanism (3), when the first connecting part (2) and the second connecting part (4) are driven to move oppositely, the assembly to be telescopic is contracted; when the first connecting part (2) and the second connecting part (4) are driven to move back to back, the component to be retracted is expanded.

2. The transmission structure according to claim 1, characterized in that it further comprises:

the protective shell is used for mounting the first telescopic mechanism (1) and the second telescopic mechanism (3);

and the power mechanism (5) is in transmission connection with the first telescopic mechanism (1) and the second telescopic mechanism (3) through a gear set so as to drive the first telescopic mechanism (1) and the second telescopic mechanism (3) to simultaneously perform reverse motion, so that the first connecting part (2) and the second connecting part (4) correspondingly perform opposite or back motion along the length directions of the first telescopic mechanism (1) and the second telescopic mechanism (3).

3. The transmission structure according to claim 2, characterized in that the first (1) and second (3) telescoping mechanisms are provided as two lead screws with opposite rotation directions, and the first (2) and second (4) connecting parts are rotatably connected with the corresponding lead screws;

and/or limiting mechanisms are respectively arranged at the positions corresponding to the first connecting part (2) and the second connecting part (4) in the protective shell.

4. The transmission structure according to claim 2, characterized in that the power mechanism (5) is arranged as a driving motor and is arranged parallel or perpendicular to the first telescoping mechanism (1).

5. The transmission structure according to claim 2, characterized in that it further comprises: the guide rod (6), guide rod (6) with first telescopic machanism (1) and/or second telescopic machanism (3) parallel arrangement, and both ends all with protective housing fixed connection, the one end of first connecting portion (2) and/or second connecting portion (4) with the connection is established to guide rod (6) cover.

6. The transmission structure according to claim 2, wherein the gear set includes: drive gear (7), first drive gear (8) and second drive gear (9) that mesh in proper order, drive gear (7) with the output of power unit (5) is connected, first drive gear (8) and second drive gear (9) are connected with corresponding first telescopic machanism (1) and second telescopic machanism (3).

7. Transmission according to claim 6, characterized in that the transmission ratio of the first transmission gear (8) and the second transmission gear (9) is 1: 1.

8. The transmission structure of claim 6, wherein the gear set further comprises: the driving gear (7) is meshed with the other end of the third transmission gear (10), and the other end of the fourth transmission gear (11) is meshed with the first transmission gear (8).

9. The transmission structure according to claim 1, characterized in that the first connection part (2) and/or the second connection part (4) is/are provided with an auxiliary connection part (12) protruding from the outside.

10. A retractable screen, comprising: a screen assembly and a transmission structure according to any one of claims 1 to 9; one end of the screen component is connected with the first connecting part (2) of the transmission structure, and the other end of the screen component is connected with the second connecting part (4) of the transmission structure; under the drive of the transmission structure, the screen assembly is driven to do reciprocating motion of contraction or expansion.

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