Folding drive device and folding screen device

Abstract

The present invention provides a folding driving device and a folding screen device. The folding driving device includes a support frame having a receiving groove, a guide rail fixedly connected to the support frame, a slider slidably connected to the guide rail, a switch sequentially passing through the support frame and the guide rail and fixedly connected to the slider, two driving motors fixed on opposite sides of the slider, first gears fixed on the output ends of the two driving motors, two speed reducers fixedly connected to the support frame, and second gears fixed on the input ends of the two speed reducers. The driving motors and the speed reducers are arranged along the sliding direction of the slider, the driving motors are spaced apart from the support frame, and the second gears are respectively engaged with the first gears. When the folding driving device in the present invention is applied to a folding screen device, an electric folding mode and a manual folding mode of the folding screen device can be realized, improving the user experience.

Description

Technical Field

[0001] The present invention relates to the technical field of folding, and particularly to a folding driving device and a folding screen device. Background Art

[0002] A folding screen device, such as a folding screen mobile phone, is a new type of smart phone that can be flexibly folded. It has two folding methods: single-screen folding or double-screen folding. Whether it is a single-screen folding mobile phone or a double-screen folding mobile phone, the purpose is to fold the mobile phone to facilitate the user to carry.

[0003] The folding screen device in the related technology mainly includes a first folding screen, a second folding screen, a folding driving device, and a transmission mechanism connected to the folding driving device. The first folding screen and the second folding screen are respectively rotatably connected to the transmission mechanism. After the folding driving device is turned on, the first folding screen and the second folding screen are driven to fold through the transmission mechanism.

[0004] Although the folding screen device in the related technology can realize the electric folding of the first folding screen and the second folding screen, this pure electric folding method is too single, resulting in a poor user experience. Moreover, when the user encounters a situation of insufficient battery power, the folding screen device cannot be folded.

[0005] Therefore, it is necessary to provide a new folding driving device and a folding screen device to solve the above technical problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a new folding driving device and a folding screen device to solve the problem that the folding screen device in the related technology uses a pure electric folding method, which is too single, resulting in a poor user experience, and when the user encounters a situation of insufficient battery power, the folding screen device cannot be folded.

[0007] In a first aspect, the present invention provides a folding drive device applied to a folding screen device, which includes a support frame having a receiving groove, a guide rail received in the receiving groove and fixedly connected to the support frame, a slider slidably connected to the guide rail and spaced from the support frame, a switch sequentially passing through the support frame and the guide rail and fixedly connected to the slider, two drive motors fixed to opposite sides of the slider, first gears respectively fixed to the output ends of the two drive motors, two speed reducers received in the receiving groove and fixedly connected to the support frame, and second gears respectively fixed to the input ends of the two speed reducers. The drive motors and the speed reducers are arranged along the sliding direction of the slider, the drive motors are spaced from the support frame, the second gears are respectively meshed with the first gears, and by moving the switch, the slider and the drive motors are driven to slide relative to the guide rail and the support frame, so as to realize the engagement or separation of the first gears and the second gears.

[0008] Preferably, the first gear and the second gear are face gears meshing with each other along their respective axial directions; an insertion portion protruding outward along its axial direction is provided on any end face of one of the first gear and the second gear, and a slot penetrating through it along its axial direction is provided on any end face of the other of the first gear and the second gear, and the insertion portion is inserted into the slot.

[0009] Preferably, a ring-shaped first sleeve is fixedly sleeved on the end of the drive motor close to the speed reducer; a ring-shaped second sleeve is fixedly sleeved on the end of the speed reducer close to the drive motor; a ring-shaped clamping portion protruding outward along its axial direction is provided on the end of the second sleeve close to the first sleeve, and the clamping portion is inserted into the first sleeve and slidably connected to the first sleeve.

[0010] Preferably, a groove recessed inward is provided on the surface of the guide rail facing the support frame, and arc-shaped limiting grooves protruding outward are respectively provided on opposite sides of the groove; the folding drive device further includes an elastic member, the elastic member includes a fixing portion received in the groove and sleeved on the switch, elastic arms respectively protruding outward from opposite sides of the fixing portion, and a limiting portion protruding and arc-shaped from the end of the elastic arm away from the fixing portion. The switch sequentially passes through the fixing portion and the bottom of the groove and is fixedly connected to the slider. When the limiting portion slides to the position of the limiting groove, the limiting portion slides into the limiting groove under the elastic action of the elastic arm.

[0011] Preferably, the guide rail includes a bottom plate fixed to the support frame, a first overlapping portion protruding and extending from the middle region of the surface of the bottom plate away from the support frame, a second overlapping portion protruding and extending from a partial region of the first overlapping portion, and extending portions protruding outward from opposite sides of the second overlapping portion and exceeding the first overlapping portion, the extending portions being spaced apart from the bottom plate; the slider includes two relatively spaced skateboards, a connecting plate connecting one ends of the two skateboards, and a pressing portion formed by bending and extending from one end of the skateboard away from the connecting plate, inwardly recessed chutes being respectively provided on one sides of the two skateboards close to each other; the two extending portions are respectively inserted into the chutes of the two skateboards, and the slider is slidably connected to the guide rail, the switch passes through the bottom plate and the first overlapping portion and is fixedly connected to the connecting plate, and the two driving motors are respectively fixed to one sides of the two skateboards away from the support frame and pressed against the corresponding pressing portions.

[0012] Preferably, a card slot recessed inward is provided at a position of the support frame close to the driving motor, the driving motor is spaced apart from the bottom of the card slot, and the length of the card slot in the sliding direction of the slider is equal to the length of the driving motor plus the sliding distance of the switch.

[0013] Preferably, the folding driving device further includes a bracket received in the accommodating groove and fixedly connected to the support frame, arc-shaped grooves recessed inward are respectively provided on both sides of the bracket, one end of the speed reducer away from the driving motor is inserted into the arc-shaped groove, and the output end of the speed reducer passes through the bracket and extends in a direction away from the driving motor.

[0014] Preferably, a support plate protruding outward is provided on the inner side of the support frame, and support grooves recessed inward are provided at positions corresponding to the driving motor and the speed reducer on the support plate.

[0015] Preferably, waist-shaped holes penetrating therethrough are provided at positions of the support frame and the guide rail corresponding to the switch, and the switch passes through the waist-shaped holes on the support frame and the guide rail in sequence and is fixedly connected to the slider.

[0016] In a second aspect, the present invention provides a folding screen device, which includes the folding driving device as described above, and a first folding screen and a second folding screen respectively rotatably connected to the output ends of the two speed reducers; the switch passes through the connection between the first folding screen and the second folding screen, when the first gear meshes with the second gear, the electric opening and closing of the first folding screen and the second folding screen are realized, and when the first gear is separated from the second gear, the manual opening and closing of the first folding screen and the second folding screen are realized.

[0017] Compared with the related technologies, in the folding drive device of the present invention, the guide rail and the speed reducer are fixed to the support frame, the drive motor is fixed to the slider, and the slider is slidably connected to the guide rail. A switch is also designed to pass through the support frame and the guide rail in sequence and form a fixed connection with the slider. When this folding drive device is applied to a folding screen device, not only can the electric folding mode of the folding screen device be realized through the drive motor, but also the drive motor can be separated from the speed reducer by toggling the switch, thereby realizing the manual folding mode, enriching the folding modes of the folding screen device and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings, where:

[0019] Figure 1 is a three-dimensional structural schematic diagram of the folding drive device provided in Embodiment 1 of the present invention;

[0020] Figure 2 is a partial structural exploded view of the folding drive device provided in Embodiment 1 of the present invention;

[0021] Figure 3 is a first perspective partial structural exploded view of the corresponding drive motor and speed reducer in the folding drive device provided in Embodiment 1 of the present invention;

[0022] Figure 4 is a second perspective partial structural exploded view of the corresponding drive motor and speed reducer in the folding drive device provided in Embodiment 1 of the present invention;

[0023] Figure 5 is a partial structural exploded view of the guide rail, switch and elastic member in the folding drive device provided in Embodiment 1 of the present invention;

[0024] Figure 6 is a front structural schematic diagram of the folding screen device provided in Embodiment 2 of the present invention;

[0025] Figure 7 is a back structural schematic diagram of the folding screen device provided in Embodiment 2 of the present invention;

[0026] Figure 8 is a structural schematic diagram of the folding screen device provided in Embodiment 2 of the present invention with some structures hidden to expose the folding drive device.

[0027] Among them, 100, folding drive device; 1, support frame; 11, card slot; 12, support plate; 121, support slot; 13, waist hole; 14, accommodating slot; 2, guide rail; 21, groove; 211, limit slot; 22, bottom plate; 23, first stacking part; 24, second stacking part; 25, extension part; 3, slider; 31, slide plate; 311, slide slot; 32, connecting plate; 33, pressing part; 4, switch; 5, drive motor; 51, first sleeve; 52, output end of drive motor; 6, first gear; 61, insertion part; 7, reducer; 71, second sleeve; 711, card connection part; 72, input end of reducer; 8, second gear; 81, slot; 9, elastic member; 91, fixing part; 92, elastic arm; 93, limit part; 101, bracket; 1011, arc groove; 110, circuit board;

[0028] 200, folding screen device; 201, first folding screen; 202, second folding screen. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Embodiment 1

[0031] The embodiment of the present invention provides a folding drive device 100, Figures 1 to 5 As shown, it includes a support frame 1 with a receiving groove 14, a guide rail 2 received in the receiving groove 14 and fixedly connected to the support frame 1, a slider 3 slidably connected to the guide rail 2 and spaced apart from the support frame 1, a switch 4 sequentially passing through the support frame 1 and the guide rail 2 and fixedly connected to the slider 3, two drive motors 5 fixed on opposite sides of the slider 3, a first gear 6 respectively fixed to the output ends 52 of the two drive motors, two reducers 7 received in the receiving groove 14 and fixedly connected to the support frame 1, and a second gear 8 respectively fixed to the input ends 72 of the two reducers, the drive motor 5 and the reducer 7 are arranged along the sliding direction of the slider, the drive motor 5 is spaced apart from the support frame 1, the second gear 8 is respectively meshed with the first gear 6, and the switch 4 is moved to drive the slider 3 and the drive motor 5 to slide relative to the guide rail 2 and the support frame 1, so as to achieve the meshing or separation of the first gear 6 and the second gear 8.

[0032] Among them, the folding drive device 100 is applied to a folding screen device, such as a folding mobile phone, to realize the folding of the folding screen device.

[0033] A card slot 11 that is recessed inward is provided at a position of the support frame 1 close to the drive motor 5. The drive motor 5 is spaced from the bottom of the card slot 11. The length of the card slot 11 in the sliding direction of the slider 3 is equal to the length of the drive motor 5 plus the sliding distance of the switch 4. Such a design can not only achieve the spaced arrangement between the drive motor 5 and the support frame 1, but also limit the sliding distance of the slider 3 through the length of the card slot 11.

[0034] On the inner side of the support frame 1, there is a support plate 12 that protrudes and extends outward. Support grooves 121 are formed by being recessed inward at positions corresponding to the drive motor 5 and the reduction gear 7. In this embodiment, there are two support plates 12, one of which is used to support the drive motor 5 and the reduction gear 7, and the other is used to support the reduction gear 7. Such a design can facilitate the fixation of the drive motor 5 and the reduction gear 7, and make it convenient for the input end 72 of the reduction gear to be connected to the output end 52 of the drive motor.

[0035] Waist-shaped holes 13 that penetrate therethrough are provided at positions of the support frame 1 and the guide rail 2 corresponding to the switch 4. The switch 4 sequentially passes through the waist-shaped holes 13 on the support frame 1 and the guide rail 2 and is fixedly connected to the slider 3. The length of the waist-shaped hole 13 is equal to the sliding distance of the slider 3. Correspondingly, the switch 4 is in a T shape, so as to facilitate passing through the support frame 1 and the guide rail 2 and having a part exposed outside the support frame 1. Such a design can facilitate the switch 4 to form a sliding connection with the support frame 1 and the guide rail 2 respectively.

[0036] On the surface of the guide rail 2 facing the support frame 1, there is a groove 21 that is recessed inward. On opposite sides of the groove 21, there are respectively outwardly protruding and arc-shaped limiting grooves 211. The folding drive device 100 further includes an elastic member 9. The elastic member 9 includes a fixing portion 91 that is received in the groove 21 and sleeved on the switch 4, elastic arms 92 that respectively protrude and extend outward from opposite sides of the fixing portion 91, and a limiting portion 93 that protrudes and extends from the end of the elastic arm 92 away from the fixing portion 91 and is in an arc shape. The switch 4 sequentially passes through the fixing portion 91 and the bottom of the groove 21 and is fixedly connected to the slider 3. When the limiting portion 93 slides to the position of the limiting groove 211, the limiting portion 93 slides into the limiting groove 211 under the elastic action of the elastic arm 92. Such a design can, when the switch 4 slides, limit the position of the slider 3 through the limiting effect of the limiting portion 93 sliding into the limiting groove 211, so as to prevent the drive motor 5 on the slider 3 from shifting during operation and ensure the normal use of electric folding or manual folding.

[0037] The guide rail 2 includes a bottom plate 22 fixed to the support frame 1, a first stacked portion 23 protruding and extending from the middle area of the surface of the bottom plate 22 away from the support frame 1, a second stacked portion 24 protruding and extending from a partial area of the first stacked portion 23, and extending portions 25 protruding and extending outward from opposite sides of the second stacked portion 24 and exceeding the first stacked portion 23. The extending portions 25 are spaced apart from the bottom plate 22; the slider 3 includes two relatively spaced skateboards 31, a connecting plate 32 connecting one ends of the two skateboards 31, and a pressing portion 33 formed by bending and extending from the end of the skateboard 31 away from the connecting plate 32. Concave chutes 311 are respectively formed on the sides of the two skateboards 31 close to each other; the two extending portions 25 are respectively inserted into the chutes 311 of the two skateboards 31, so that the slider 3 forms a sliding connection with the guide rail 2. The switch 4 passes through the bottom plate 22 and the first stacked portion 23 and forms a fixed connection with the connecting plate 32. The two driving motors 5 are respectively fixed to the sides of the two skateboards 31 away from the support frame 1 and are pressed against the corresponding pressing portions 33; the waist-shaped holes 13 on the guide rail 2 sequentially penetrate through the corresponding positions of the bottom plate 22 and the first stacked portion 23. Such a design can realize the sliding design of the slider 3 and the guide rail 2 in the narrow accommodation groove 14 of the support frame 1, so that the structure of the folding driving device 100 is compact and suitable for the small space of the folding screen device.

[0038] The first gear 6 and the second gear 8 are face gears meshing with each other along their respective axial directions; an inserting portion 61 protruding and extending outward along its axial direction is provided on any end face of one of the first gear 6 and the second gear 8, and a slot 81 penetrating through it along its axial direction is provided on any end face of the other of the first gear 6 and the second gear 8. The inserting portion 61 is inserted into the slot 81. By designing the first gear 6 and the second gear 8 as face gears and designing matching inserting portions 61 and slots 81 on the first gear 6 and the second gear 8, it can be ensured that the first gear 6 of the driving motor 5 and the second gear 8 of the speed reducer 7 can achieve gear meshing and separation when connected or separated, ensuring the normal rotation of the folding driving device 100. In this embodiment, the inserting portion 61 is provided on the first gear 6, and the slot 81 is provided on the second gear 8.

[0039] A ring-shaped first sleeve 51 is sleeved and fixed at the end of the driving motor 5 close to the speed reducer 7; a ring-shaped second sleeve 71 is sleeved and fixed at the end of the speed reducer 7 close to the driving motor 5; a ring-shaped clamping portion 711 protruding and extending outward along its axial direction is provided at the end of the second sleeve 71 close to the first sleeve 51. The clamping portion 711 is inserted into the first sleeve 51 and forms a sliding connection with the first sleeve 51. Such a design can further ensure that the first gear 6 of the driving motor 5 and the second gear 8 of the speed reducer 7 can achieve gear meshing and separation when connected or separated, ensuring the normal rotation of the folding driving device 100.

[0040] The folding drive device 100 further includes a fixing bracket 101 that is received in the receiving groove 14 and fixedly connected to the support frame 1. Arc-shaped grooves 1011 that are recessed inward are respectively provided on both sides of the bracket 101. One end of the speed reducer 7 away from the drive motor 5 is inserted into the arc-shaped groove 1011, and the output end of the speed reducer 7 passes through the bracket 101 and extends in the direction away from the drive motor 5. Such a design can facilitate the fixing effect of the speed reducer 7 and avoid the phenomenon that the speed reducer 7 vibrates or detaches when the folding drive device 100 operates.

[0041] The folding drive device 100 further includes a circuit board 110 that is electrically connected to the drive motor 5.

[0042] In the folding drive device 100 of this embodiment, if electric folding is required, it is only necessary to keep the first gear 6 and the second gear 8 meshed; if it is necessary to switch to manual folding, the toggle switch 4 is toggled to separate the first gear 6 of the drive motor 5 from the second gear 8 of the speed reducer 7, and the self-locking force of the separated speed reducer 7 is greatly reduced, so that manual folding can be achieved; if it is necessary to switch to electric folding again, the toggle switch 4 can be toggled again to make the first gear 6 of the drive motor 5 and the second gear 8 of the speed reducer 7 mesh again, and then electric folding can be used normally. In the folding drive device 100 of this embodiment, the two folding methods of electric folding and manual folding do not interfere with each other.

[0043] When the folding screen device in the related art designs a solution based on the concept of electric drive, due to the limitations of the length, width, and height of the internal space of the folding screen device, it is often necessary to design a speed reducer with a high transmission ratio to increase the torque required for folding hinges. The self-locking force of such a structure is relatively large, and manual folding is difficult to achieve; while in this embodiment, by designing the sliding connection between the slider 3 and the guide rail 2 and fixing the drive motor 5 on the slider 3, a sliding design in a narrow space is realized, so that the drive motor 5 and the speed reducer 7 can be separated to achieve the manual folding method.

[0044] In the related art, the connection between the motor and the reduction device of the folding screen device usually uses a flat position or a key for transmission. During the switching process between electric or manual folding, such a structure cannot ensure that the flat position or the key can be realigned after separation and manual folding; while in this embodiment, through the design of the face gear, the problem of misalignment and non-engagement can be solved in a narrow space.

[0045] Based on the size design of the folding screen device, the folding drive device 100 in this embodiment reasonably allocates a relatively small radial width, axial length, and longitudinal height space, and has a compact structure, high space utilization rate, high part integration and reliability, realizes the switching between electric folding and manual folding, and is applicable to a wider range of scenarios.

[0046] Compared with the related art, in the folding drive device 100 of this embodiment, the guide rail 2 and the reduction gear 7 are fixed to the support frame 1, the drive motor 5 is fixed to the slider 3, and the slider 3 is slidably connected to the guide rail 2. A switch 4 is designed to pass through the support frame 1 and the guide rail 2 in sequence and form a fixed connection with the slider 3. When the folding drive device 100 is applied to a folding screen device, not only can the electric folding mode of the folding screen device be realized through the drive motor 5, but also the drive motor 5 can be separated from the reduction gear 7 by toggling the switch 4, so as to realize the manual folding mode, enriching the folding modes of the folding screen device and improving the user experience. In addition, by adding the manual folding mode, the folding screen device can be manually folded when the battery power is insufficient, thereby improving its convenience.

[0047] Embodiment 2

[0048] This embodiment provides a folding screen device 200, which combines Figures 6 to 8 As shown, it includes the folding drive device 100 in the first embodiment above, and a first folding screen 201 and a second folding screen 202 that are respectively rotatably connected to the output ends of two reduction gears 7; the switch 4 passes through the connection between the first folding screen 201 and the second folding screen 202. When the first gear 6 meshes with the second gear 8, the electric opening and closing of the first folding screen 201 and the second folding screen 202 are realized. When the first gear 6 is separated from the second gear 8, the manual opening and closing of the first folding screen 201 and the second folding screen 202 are realized.

[0049] The way for the first folding screen 201 and the second folding screen 202 to realize electric opening and closing is achieved by clicking a specific area of the entire screen, which is equivalent to that this specific area is the switch to start the drive motor 5.

[0050] There are two situations where the switch 4 passes through the first folding screen 201 and the second folding screen 202: the first is that the switch 4 is exposed outside the first folding screen 201 and the second folding screen 202, which is equivalent to that the outer side surface of the switch 4 protrudes more outward than the outer side surfaces of the first folding screen 201 and the second folding screen 202; the second is that the outer side surface of the switch 4 is on the same horizontal plane as the outer side surfaces of the first folding screen 201 and the second folding screen 202.

[0051] Since the folding screen device 200 in this embodiment includes the folding drive device 100 in the first embodiment above, it can also achieve the technical effects achieved by the folding drive device 100 in the first embodiment above, which will not be elaborated here.

[0052] The above are only the implementation manners of the present invention. It should be noted here that for those of ordinary skill in the art, improvements can be made without departing from the creative concept of the present invention, but these all belong to the protection scope of the present invention.

Claims

1. A folding drive device, applied to a folding screen device, characterized in that: The folding drive device includes a support frame with a receiving groove, a guide rail received in the receiving groove and fixedly connected to the support frame, a slider slidably connected to the guide rail and spaced from the support frame, a switch sequentially passing through the support frame and the guide rail and fixedly connected to the slider, two driving motors fixed on opposite sides of the slider, first gears respectively fixed to output ends of the two driving motors, two reducers received in the receiving groove and fixedly connected to the support frame, and second gears respectively fixed to input ends of the two reducers, the driving motor and the reducer are arranged along the sliding direction of the slider, the driving motor and the support frame are spaced from each other, the second gears are respectively meshed with the first gears, and the slider and the driving motor are driven to slide relative to the guide rail and the support frame by moving the switch, so as to achieve meshing or separation of the first gear and the second gear; The first gear and the second gear are end face gears meshing with each other along their respective axial directions; any end face of one of the first gear and the second gear is provided with an inserting portion protruding and extending outward along its axial direction, and any end face of the other of the first gear and the second gear is provided with a slot penetrating therethrough along its axial direction, and the inserting portion is inserted into the slot; A first annular sleeve is fixedly mounted on one end of the drive motor close to the reducer; a second annular sleeve is fixedly mounted on one end of the reducer close to the drive motor; an annular clamping portion is provided at one end of the second sleeve close to the first sleeve, which protrudes outward along its axial direction and is annular, and the clamping portion is inserted into the first sleeve and forms a sliding connection with the first sleeve; The support frame and the guide rail are both provided with waist-shaped holes penetrating therethrough at positions corresponding to the switch, and the switch passes through the waist-shaped holes on the support frame and the guide rail in sequence and forms a fixed connection with the slider; The switch passes through the connection between the first folding screen and the second folding screen in the folding screen device. When the first gear is engaged with the second gear, the first folding screen and the second folding screen are electrically opened and closed. When the first gear is separated from the second gear, the first folding screen and the second folding screen are manually opened and closed.

2. The folding drive device according to claim 1, characterized in that: The surface of the guide rail facing the support frame is provided with an inwardly recessed groove, and the opposite sides of the groove are respectively provided with outwardly protruding and arc-shaped limiting grooves; the folding drive device also includes an elastic member, which includes a fixed part received in the groove and sleeved on the switch, elastic arms protruding outward from the opposite sides of the fixed part respectively, and an arc-shaped limiting part protruding and extending from one end of the elastic arm away from the fixed part, the switch passes through the fixed part and the bottom of the groove in sequence, and is fixedly connected to the slider, and when the limiting part slides to the position of the limiting groove, the limiting part slides into the limiting groove under the elastic action of the elastic arm.

3. The folding drive device according to claim 1, characterized in that: The guide rail includes a bottom plate fixed to the support frame, a first stacked portion protruding and extending from the middle area of ​​the bottom plate away from the support frame surface, a second stacked portion protruding and extending from a partial area of ​​the first stacked portion, and extension portions protruding outward and extending from opposite sides of the second stacked portion and exceeding the first stacked portion, wherein the extension portion is spaced apart from the bottom plate; the slider includes two relatively spaced sliders, a connecting plate connecting one end of the two sliders, and a pressing portion formed by bending and extending from one end of the slider away from the connecting plate, and the sides of the two sliders close to each other are respectively provided with sliding grooves formed by inward depressions; the two extension portions are respectively inserted into the sliding grooves of the two sliders, and the slider is slidably connected to the guide rail, the switch passes through the bottom plate and the first stacked portion and is fixedly connected to the connecting plate, and the two driving motors are respectively fixed to the sides of the two sliders away from the support frame and pressed against the corresponding pressing portions.

4. The folding drive device according to claim 1, characterized in that: The support frame is provided with an inwardly recessed slot near the drive motor, the drive motor is spaced apart from the bottom of the slot, and the length of the slot along the sliding direction of the slider is equal to the length of the drive motor plus the sliding distance of the switch.

5. The folding drive device according to claim 1, characterized in that: The folding drive device also includes a bracket accommodated in the accommodating groove and fixedly connected to the support frame, and both sides of the bracket are respectively provided with inwardly recessed arc grooves, one end of the reducer away from the drive motor is inserted into the arc groove, and the output end of the reducer passes through the bracket and extends in a direction away from the drive motor.

6. The folding drive device according to claim 1, characterized in that: A support plate extending outwardly and protruding is provided on the inner side of the support frame, and a support groove recessed inwardly is provided on the support plate corresponding to the positions of the drive motor and the reducer.

7. A folding screen device, characterized in that: The folding screen device comprises a folding drive device as described in any one of claims 1 to 6, and a first folding screen and a second folding screen which are rotationally connected to the output ends of the two reducers respectively.

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