Electric roller shutter and use state switching method thereof

Abstract

The invention discloses an electric roller shutter and a use state switching method thereof. The electric roller shutter comprises an upper electric winding and unwinding device, a lower electric winding and unwinding device and curtain cloth. The upper electric winding and unwinding device and the lower electric winding and unwinding device are separately arranged up and down, are respectively connected with the upper side and the lower side of the curtain cloth, and are both used for driving the curtain cloth to wind and unwind; the curtain cloth is provided with an upper shading area and a lower shading area which are vertically adjacent, and the shading rate of the upper shading area is lower than that of the lower shading area. According to the electric roller shutter, the shading area and the shading effect can be switched, and use is more flexible.

Description

Technical Field

[0001] The present invention relates to the field of electric curtains, in particular to an electric rolling curtain and a method for switching its use state. Background Art

[0002] Electric roller blinds are a type of shading device that utilizes an electric winding mechanism (such as a tubular motor) to drive the curtain's release and retraction. They are a common feature in modern smart homes. However, existing electric roller blinds generally only adjust the shading area, without being able to control the shading effect within the shading area, resulting in certain limitations.

[0003] In view of the existence of the above problems, it is necessary to study an electric roller blind and a method for switching its use state, which can switch the shading area and shading effect and is more flexible to use. Summary of the Invention

[0004] The object of the present invention is to provide an electric rolling shutter and a method for switching its use state, which can switch the shading area and the shading effect and is more flexible to use.

[0005] In order to achieve the above object, the solution of the present invention is: An electric roller blind comprises an upper electric winding device, a lower electric winding device, and a curtain; the upper electric winding device and the lower electric winding device are separately arranged up and down, and the upper electric winding device and the lower electric winding device are respectively connected to the upper and lower sides of the curtain, and the upper electric winding device and the lower electric winding device are both used to drive the curtain to be wound and released; the curtain has an upper shading area and a lower shading area adjacent to each other, and the shading rate of the upper shading area is lower than the shading rate of the lower shading area.

[0006] The upper electric winding and unwinding device comprises an upper tubular motor, and the upper side of the curtain is connected to the rotor of the upper tubular motor.

[0007] The upper side of the curtain forms a connection area, which is connected to the rotor of the upper tubular motor. The connection area is provided with a plurality of hard guide reinforcement strips, each of which is arranged at intervals in the connection area and parallel to the upper tubular motor.

[0008] The guide reinforcement strip is made of plastic or metal; the guide reinforcement strip is bonded to the connection area or sewn together with sutures.

[0009] The connecting area of the curtain is connected to the upper tubular motor through at least two connecting ropes, and the connecting ropes are detachably connected to the connecting area.

[0010] The lower electric winding and unwinding device includes a protection box and a lower tubular motor installed in the protection box; the rotor of the lower tubular motor is provided with a connecting slot along its axial direction; the protection box is provided with an inlet and outlet slot along its axial direction, and an end face of at least one end of the protection box is provided with a disassembly opening, the disassembly opening is connected to the inlet and outlet slot, and the disassembly opening is equipped with a disassembly cover for opening and closing the disassembly opening; the curtain moves through the inlet and outlet slot of the protection box, and a connecting seat is provided on the lower side of the curtain, the connecting seat is slidably engaged with the connecting slot of the lower tubular motor, and the connecting seat and the connecting slot are circumferentially limited and radially limited.

[0011] The protection box has two opposite bent plates, and the entry and exit slot is formed between the two bent plates.

[0012] One side of the disassembly cover is pivotally connected to one side of the disassembly opening, and the other side of the disassembly cover is movably buckled with the protection box.

[0013] When the disassembly cover closes the disassembly opening, the disassembly cover is flush with the end surface of the protection box where the disassembly opening is provided.

[0014] A method for switching the use state of an electric rolling curtain as described above, wherein the electric rolling curtain has a first use state, a second use state, a third use state, a fourth use state and a fifth use state; when the electric rolling curtain is in the first use state, the upper shading area and the lower shading area of the curtain are respectively rolled up to a fully retracted state by the upper electric winding device and the lower electric winding device; when the electric rolling curtain is in the second use state, the upper shading area of the curtain is rolled up to a fully retracted state by the upper electric winding device, and the lower shading area of the curtain is released to a half-open state by the lower electric winding device; when the electric rolling curtain is in the third use state, the upper shading area of the curtain is released to a half-open state by the upper electric winding device, and the lower shading area of the curtain is rolled up to a fully retracted state by the lower electric winding device. When the electric roller blind is in the fourth operating state, the upper shading area of the curtain is reeled in to the fully reeled state by the upper electric winding device, and the lower shading area of the curtain is released to the fully open state by the lower electric winding device; when the electric roller blind is in the fifth operating state, the upper shading area of the curtain is released to the fully open state by the upper electric winding device, and the lower shading area of the curtain is reeled in to the fully reeled state by the lower electric winding device; the switching method of the electric roller blind from the first operating state to the second operating state is as follows: the upper electric winding device does not work, and the lower electric winding device releases the lower shading area of the curtain to the half-open state; the switching method of the electric roller blind from the first operating state to the third operating state is as follows: the upper electric winding device releases the upper shading area of the curtain to the half-open state The electric rolling curtain is in the open state and the lower electric rolling device does not work; the switching method of the electric rolling curtain from the first use state to the fourth use state is: the upper electric rolling device does not work, and the lower electric rolling device releases the lower shading area of the curtain to the fully open state; the switching method of the electric rolling curtain from the first use state to the fifth use state is: the upper electric rolling device releases the upper shading area of the curtain to the fully open state, and the lower electric rolling device does not work; the switching method of the electric rolling curtain from the second use state to the first use state is: the upper electric rolling device does not work, and the lower electric rolling device rewinds the lower shading area of the curtain to the fully retracted state; the switching method of the electric rolling curtain from the second use state to the third use state is: the upper electric rolling device The upper shading area of the curtain is released to a half-open state, and the lower electric winding device reels the lower shading area of the curtain to a fully retracted state; the switching method of the electric rolling curtain from the second use state to the fourth use state is as follows: the upper electric winding device does not work, and the lower electric winding device releases the lower shading area of the curtain to a fully open state; the switching method of the electric rolling curtain from the second use state to the fifth use state is as follows: the upper electric winding device releases the upper shading area of the curtain to a fully open state, and the lower electric winding device retracts the lower shading area of the curtain to a fully retracted state; the switching method of the electric rolling curtain from the third use state to the first use state is as follows: the upper electric winding device retracts the upper shading area of the curtain to a fully retracted state, and the lower electric winding device does not work;The switching method of the electric rolling curtain from the third use state to the second use state is as follows: the upper electric winding device rewinds the upper light-shielding area of the curtain to a fully retracted state, and the lower electric winding device releases the lower light-shielding area of the curtain to a half-open state; the switching method of the electric rolling curtain from the third use state to the fourth use state is as follows: the upper electric winding device rewinds the upper light-shielding area of the curtain to a fully retracted state, and the lower electric winding device releases the lower light-shielding area of the curtain to a fully open state; the switching method of the electric rolling curtain from the third use state to the fifth use state is as follows: the upper electric winding device rewinds the upper light-shielding area of the curtain to a fully retracted state, and the lower electric winding device releases the lower light-shielding area of the curtain to a fully open state. The shading area is released to the fully open state, and the lower electric winding device does not work; the switching method of the electric rolling curtain from the fourth use state to the first use state is: the upper electric winding device does not work, and the lower electric winding device rolls up the lower shading area of the curtain to the fully retracted state; the switching method of the electric rolling curtain from the fourth use state to the second use state is: the upper electric winding device does not work, and the lower electric winding device rolls up the lower shading area of the curtain to a half-open state; the switching method of the electric rolling curtain from the fourth use state to the third use state is: the upper electric winding device rolls up the lower shading area of the curtain When the curtain is released to a half-open state, the lower electric winding device reels the lower light-shielding area of the curtain to a fully retracted state; the switching method of the electric rolling curtain from the fourth use state to the fifth use state is as follows: the upper electric winding device releases the lower light-shielding area of the curtain to a fully-open state, and the lower electric winding device reels the lower light-shielding area of the curtain to a fully retracted state; the switching method of the electric rolling curtain from the fifth use state to the first use state is as follows: the upper electric winding device reels the upper light-shielding area of the curtain to a fully retracted state, and the lower electric winding device does not work; the electric rolling curtain switches from the fifth use state to the second use state The switching mode is as follows: the upper electric unwinding device rewinds the upper light-shielding area of the curtain to a fully retracted state, and the lower electric unwinding device releases the lower light-shielding area of the curtain to a half-open state. The switching mode of the electric roller blind from the fifth operating state to the third operating state is as follows: the upper electric unwinding device rewinds the upper light-shielding area of the curtain to a half-open state, and the lower electric unwinding device does not operate. The switching mode of the electric roller blind from the fifth operating state to the fourth operating state is as follows: the upper electric unwinding device rewinds the upper light-shielding area of the curtain to a fully retracted state, and the lower electric unwinding device releases the lower light-shielding area of the curtain to a fully open state.

[0015] The electric rolling curtain also has a sixth usage state; when the electric rolling curtain is in the sixth usage state, the upper shading area of the curtain is released to a half-open state by the upper electric winding device, and the lower shading area of the curtain is released to a half-open state by the lower electric winding device; the switching method of the electric rolling curtain from the first usage state to the sixth usage state is: the upper electric winding device releases the upper shading area of the curtain to a half-open state, and the lower electric winding device releases the upper shading area of the curtain to a half-open state; the switching method of the electric rolling curtain from the second usage state to the sixth usage state is: the upper electric winding device releases the upper shading area of the curtain to a half-open state The shading area is released to a half-open state, and the lower electric winding device does not work; the switching method of the electric rolling curtain from the third use state to the sixth use state is: the upper electric winding device does not work, and the lower electric winding device releases the lower shading area of the curtain to a half-open state; the switching method of the electric rolling curtain from the fourth use state to the sixth use state is: the upper electric winding device releases the lower shading area of the curtain to a half-open state, and the lower electric winding device rewinds the lower shading area of the curtain to a half-open state; the switching method of the electric rolling curtain from the fifth use state to the sixth use state is: the upper electric winding device The upper shading area of the curtain is rolled up to a half-open state, and the lower electric winding device releases the lower shading area of the curtain to a half-open state; the switching method of the electric roller blind from the sixth use state to the first use state is: the upper electric winding device rolls up the upper shading area of the curtain to a fully retracted state, and the lower electric winding device rolls up the lower shading area of the curtain to a fully retracted state; the switching method of the electric roller blind from the sixth use state to the second use state is: the upper electric winding device rolls up the upper shading area of the curtain to a fully retracted state, and the lower electric winding device does not work; the electric roller blind is switched from the sixth use state to the third use state The switching method of the usage status is: the upper electric winding device does not work, and the lower electric winding device reels the lower shading area of the curtain to a fully retracted state; the switching method of the electric roller blind from the sixth usage status to the fourth usage status is: the upper electric winding device reels the upper shading area of the curtain to a fully retracted state, and the lower electric winding device releases the lower shading area of the curtain to a fully open state; the switching method of the electric roller blind from the sixth usage status to the fifth usage status is: the upper electric winding device releases the upper shading area of the curtain to a fully open state, and the lower electric winding device reels the lower shading area of the curtain to a fully retracted state.

[0016] After adopting the above scheme, the curtain fabric of the present invention has an upper shading area and a lower shading area with different shading rates, and the upper shading area is wound and released by the upper electric winding device, and the lower shading area is wound and released by the lower electric winding device; in this way, the present invention can wind up and release the upper shading area and the lower shading area respectively, thereby adjusting the shading area and shading effect of the electric roller blind of the present invention, and improving the user's flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The structure of the present invention is schematically shown Figure 1 (First usage state).

[0018] Figure 2 The structure of the present invention is schematically shown Figure 2 (Second usage state).

[0019] Figure 3 The structure of the present invention is schematically shown Figure 3 (Third usage state).

[0020] Figure 4 The structure of the present invention is schematically shown Figure 4 (Fourth usage state).

[0021] Figure 5 The structure of the present invention is schematically shown Figure 5 (Fifth usage state).

[0022] Figure 6 The structure of the present invention is schematically shown Figure 6 (Sixth usage state).

[0023] Figure 7 The structure of the present invention is schematically shown Figure 7 (Sixth usage state).

[0024] Figure 8 It is a schematic diagram of the local structure of the present invention Figure 1 .

[0025] Figure 9 for Figure 8 Enlarged view of point a.

[0026] Figure 10 It is a schematic diagram of the local structure of the present invention Figure 2 .

[0027] Figure 11 for Figure 10 Enlarged view of point b.

[0028] Figure 12 It is a schematic diagram of the local structure of the present invention Figure 3 .

[0029] Figure 13 It is a schematic diagram of the local structure of the present invention Figure 4 .

[0030] Figure 14 It is a partial structural exploded view of the present invention.

[0031] Figure 15 for Figure 14 Enlarged view of point c.

[0032] Figure 16 for Figure 14 Enlarged view of point d.

[0033] Figure 17 for Figure 14 Enlarged view of point e.

[0034] Description of labels: Upper electric winding device 1, upper tubular motor 11, Lower electric winding device 2, Protective box 21, cylinder 211, inlet and outlet slot 2111, bent plate 2112, end cover 212, disassembly opening 2121, connecting hole 2122, disassembly cover 213, rotating shaft 2131, elastic buckle plate 2132, screw 214, The lower tubular motor 22 is connected to the through slot 221 and the limiting through slot 2211. Curtain 3, upper shading area 301, lower shading area 302, connecting area 303, Guide reinforcement strip 31, connecting seat 32, limiting strip 321, Connecting rope 4. DETAILED DESCRIPTION

[0035] In order to further explain the technical solution of the present invention, the present invention is described in detail below through specific embodiments.

[0036] like Figures 1 to 17 As shown, the present invention discloses an electric roller blind, which includes an upper electric winding device 1, a lower electric winding device 2, and a curtain 3; wherein the upper electric winding device 1 and the lower electric winding device 2 are separately arranged up and down, and the upper electric winding device 1 and the lower electric winding device 2 are respectively connected to the upper and lower sides of the curtain 3, and the upper electric winding device 1 and the lower electric winding device 2 are both used to drive the curtain 3 to reel in and release; and the curtain 3 has an upper shading area 301 and a lower shading area 302 adjacent to each other, and the upper shading area 301 and the lower shading area 302 can be realized by different materials and layers (as shown above The shading area 301 is a single-layer structure, and the lower shading area 302 is a double-layer structure. One layer of the lower shading area 302 is integrated with a layer of the upper shading area 301, and the other layer of the lower shading area 302 can be a completely shading plastic cloth). The shading rate of the upper shading area 301 is lower than the shading rate of the lower shading area 302. The upper shading area 301 is wound and released by the upper electric winding and unwinding device 1, and the lower shading area 302 is wound and released by the lower electric winding and unwinding device 2. The lower shading area 302 can achieve a full shading effect, and the shading rate of the upper shading area 301 can be half of the shading rate of the lower shading area 302.

[0037] In an embodiment of the present invention, the upper electric winding device 1 may include an upper tubular motor 11, which is used to be fixed on the top of the window. The upper side of the curtain 3 is connected to the rotor of the upper tubular motor 11 so that the upper tubular motor 11 can wind and release the curtain 3, and the lower electric winding device 2 can be pulled by the upper electric winding device 1 through the curtain 3.

[0038] In an embodiment of the present invention, a connection area 303 is formed on the upper side of the curtain 3. The connection area 303 is connected to the rotor of the upper tubular motor 11. The connection area 303 is provided with a plurality of rigid guide reinforcement strips 31. Each guide reinforcement strip 31 is arranged at intervals in the connection area 303 to ensure that the connection area 303 can be retracted, and each guide reinforcement strip 31 is arranged parallel to the upper tubular motor 11. The present invention can effectively improve the strength of the connection area 303 of the curtain 3 by using the guide reinforcement strips 31, so that when the upper tubular motor 11 of the upper electric winding device 1 rewinds the connection area 303 of the curtain 3, the connection area 303 of the curtain 3 will not deviate. After the connection area 303 of the curtain 3 is stably retracted into the curtain winding device, the connection area 303 of the curtain 3 can guide the rest of the curtain 3 so that the rest of the curtain 3 can also be stably retracted into the upper tubular motor 11 of the upper electric winding device 1. In this way, the upper electric winding device 1 of the present invention can stably rewind the curtain 3.

[0039] In an embodiment of the present invention, the guide reinforcement strips 31 can be evenly spaced in the connection region 303. The spacing D2 between adjacent guide reinforcement strips 31 can be 1±0.5 mm, and the width D1 of the guide reinforcement strips 31 can be 2±0.5 mm. The guide reinforcement strips 31 can be made of plastic, which provides rigidity and lightness. Alternatively, the guide reinforcement strips 31 can be made of metal. The guide reinforcement strips 31 can be secured to the connection region 303 of the curtain fabric 3 by adhesive bonding or sewing.

[0040] In an embodiment of the present invention, the connection area 303 of the curtain 3 can be connected to the upper tubular motor 11 via at least two connecting ropes 4, allowing the upper tubular motor 11 to apply uniform force to the curtain 3. The connecting ropes 4 are detachably connected to the connection area 303 (e.g., by means of a lashing rope or a spring hook), allowing the curtain 3 to be detachably connected to the upper electric winding and unwinding device 1, facilitating subsequent complete removal of the curtain 3 for cleaning.

[0041] In an embodiment of the present invention, the lower electric winding device 2 includes a protective box 21 and a lower tubular motor 22 installed in the protective box 21; the rotor of the lower tubular motor 22 is provided with a connecting slot 221 along its axial direction; the protective box 21 is provided with an inlet and outlet slot along its axial direction, and the end face of at least one end of the protective box 21 is provided with a disassembly opening 2121, which is connected to the inlet and outlet slot, and the disassembly opening 2121 is equipped with a disassembly cover 213 for opening and closing the disassembly opening 2121; and the curtain 3 moves through the inlet and outlet slot of the protective box 21, and a connecting seat 32 is provided on the lower side of the curtain 3, which is slidably engaged with the connecting slot 221 of the lower tubular motor 22, and the connecting seat 32 is circumferentially limited and radially limited with the connecting slot 221; the present invention is arranged in this way so that the curtain 3 can be detachably connected to the lower electric winding device 2, which is convenient for the subsequent complete disassembly of the curtain 3 for cleaning. Among them, in the present invention, when the curtain 3 is installed with the lower electric winding device 2, first, the disassembly opening 2121 of the protection box 21 is opened; then, the connecting seat 32 of the curtain 3 is slidably connected with the connecting groove 221 of the winding device body, and the curtain 3 is passed through the entry and exit groove 2111 of the protection box 21; when the connecting seat 32 of the curtain 3 and the connecting groove 221 of the winding device body are slid into place, the disassembly opening 2121 is closed by the disassembly cover 213, thereby preventing the curtain 3 from being separated from the lower electric winding device 2. When the curtain 3 is assembled and disassembled from the lower electric winding device 2 of the present invention, first, the assembly and disassembly opening 2121 of the protection box 21 is opened; then, the curtain 3 is forced along the axial direction of the lower electric winding device 2, so that the connecting seat 32 of the curtain 3 is pulled out from the connecting groove 221 of the winding device body and the connecting seat 32 is moved out of the protection box 21 through the assembly and disassembly opening 2121, and the curtain 3 is moved out of the entry and exit groove 2111 of the protection box 21; after the connecting seat 32 of the curtain 3 and the curtain body are completely separated from the lower electric winding device 2, the assembly and disassembly opening 2121 can be closed by the assembly and disassembly cover 213 to protect the lower tubular motor 22. As can be seen from the foregoing, the assembly and disassembly operations between the lower electric winding device 2 and the curtain 3 of the present invention are very simple and convenient.

[0042] In an embodiment of the present invention, the protective box 21 may include a hollow cylinder 211 and two end covers 212 respectively connected to the two ends of the cylinder 211. The cylinder 211 is provided with the entry and exit slot 2111, and one of the two end covers 212 is provided with the disassembly opening 2121. The end cover 212 and the cylinder 211 can be locked by screws 214. Such an arrangement facilitates the installation of the lower tubular motor 22.

[0043] In an embodiment of the present invention, the cylinder 211 of the protection box 21 may have two opposite curved plates 2112 , and the inlet and outlet slot 2111 is formed between the two curved plates 2112 . The surface of the curved plates 2112 is smooth and will not cause damage to the body of the curtain 3 .

[0044] In an embodiment of the present invention, one side of the disassembly cover 213 can be pivotally connected to one side of the disassembly opening 2121, and the other side of the disassembly cover 213 can be movably engaged with the protective box 21. This simplifies the coordination between the disassembly cover 213 and the disassembly opening 2121 and facilitates opening and closing of the disassembly opening 2121. The disassembly opening 2121 can be provided with two opposing connecting holes 2122, and the disassembly cover 213 can be provided with two rotating shafts 2131 that respectively engage with the two connecting holes 2122, thereby pivotally connecting the disassembly cover 213 to the disassembly opening 2121. Furthermore, the other side of the disassembly cover 213 can be provided with an elastic buckle plate 2132 that movably buckles with the outer side of the protective box 21. This allows the user to easily apply force to the elastic buckle plate 2132 to release the disassembly cover 213 from its seal against the disassembly opening 2121. In addition, when the disassembly cover 213 closes the disassembly opening 2121 , the disassembly cover 213 is flush with the end surface of the protection box 21 where the disassembly opening 2121 is provided, so that the integrity of the protection box 21 is improved.

[0045] In an embodiment of the present invention, limiting grooves 2211 can be formed on both sides of the connecting groove 221 of the lower tubular motor 22, and the connecting seat 32 is provided with limiting strips 321 that are respectively slidably connected with the limiting grooves 2211 on both sides of the connecting groove 221, so that the connecting seat 32 and the connecting groove 221 form a circumferential limiting fit and a radial limiting fit.

[0046] In the embodiment of the present invention, the connecting seat 32 is made of plastic material, so that the connecting seat 32 is light in weight and high in strength; the connecting seat 32 can fix the fabric body of the curtain fabric 3 by bonding or riveting.

[0047] From the above, it can be seen that the curtain 3 of the present invention has an upper shading area 301 and a lower shading area 302 with different shading rates, and the upper shading area 301 is wound and released by the upper electric winding device 1, and the lower shading area 302 is wound and released by the lower electric winding device 2; in this way, the present invention can wind up and release the upper shading area 301 and the lower shading area 302 respectively, thereby adjusting the shading area and shading effect of the electric roller blind of the present invention, and improving the user's flexibility.

[0048] The electric roller blind of the present invention has a first use state, a second use state, a third use state, a fourth use state, a fifth use state and a sixth use state. Figure 1 As shown, when the electric roller blind of the present invention is in the first use state, the upper shading area 301 and the lower shading area 302 of the curtain 3 are respectively rolled up to the fully retracted state by the upper electric rolling device 1 and the lower electric rolling device 2. At this time, the electric roller blind of the present invention does not block light, so that the indoor environment is well lit. Figure 2As shown, when the electric roller blind of the present invention is in the second use state, the upper shading area 301 of the curtain 3 is rolled up to the fully retracted state by the upper electric winding device 1, and the lower shading area 302 of the curtain 3 is released to the half-open state by the lower electric winding device 2. At this time, the electric roller blind of the present invention performs semi-strong shading, which is suitable for blocking the light on the upper side of the window during the day when the outdoor light is strong, and can ensure the lighting of the indoor environment. Figure 3 As shown, when the electric roller blind of the present invention is in the third use state, the upper shading area 301 of the curtain 3 is released to a half-open state by the upper electric winding device 1, and the lower shading area 302 of the curtain 3 is rolled up to a fully rolled up state by the lower electric winding device 2. At this time, the electric roller blind of the present invention performs semi-weak shading, which is suitable for blocking the light on the upper side of the window during the day when the outdoor light is weak, and can ensure the lighting of the indoor environment. Figure 4 As shown, when the electric roller blind of the present invention is in the fourth use state, the upper shading area 301 of the curtain 3 is rolled up to the fully retracted state by the upper electric rolling device 1, and the lower shading area 302 of the curtain 3 is released to the fully open state by the lower electric rolling device 2. At this time, the electric roller blind of the present invention completely blocks light, which is suitable for blocking the light outside the window at night and ensuring the lighting and privacy of the indoor environment. Figure 5 As shown, when the electric roller blind of the present invention is in the fifth use state, the upper shading area 301 of the curtain 3 is released to the fully open state by the upper electric winding device 1, and the lower shading area 302 of the curtain 3 is rolled up to the fully retracted state by the lower electric winding device 2. At this time, the electric roller blind of the present invention is completely semi-shading, which is suitable for blocking outdoor light during the day and ensuring the lighting of the indoor environment. Figure 6 and Figure 7 As shown, when the electric roller blind of the present invention is in the sixth usage state, the upper shading area 301 of the curtain 3 is released to a semi-open state by the upper electric winding device 1, and the lower shading area 302 of the curtain 3 is released to a semi-open state by the lower electric winding device 2. At this time, the electric roller blind of the present invention transmits light from the top and shades light from the bottom, which can block outdoor light during the day and ensure lighting and privacy in the indoor environment.

[0049] In an embodiment of the present invention, the method for switching the use of the electric roller blind of the present invention is: The electric roller blind switches from the first use state to the second use state in the following manner: the upper electric winding device 1 does not work so that the upper shading area 301 of the curtain 3 remains in a fully retracted state, and the lower electric winding device 2 releases the lower shading area 302 of the curtain 3 to a half-open state; The electric roller blind switches from the first use state to the third use state in the following manner: the upper electric winding device 1 releases the upper shading area 301 of the curtain 3 to a half-open state, and the lower electric winding device 2 does not operate so that the lower shading area 302 of the curtain 3 remains in a fully retracted state; The electric roller blind switches from the first use state to the fourth use state in the following manner: the upper electric winding device 1 does not work so that the upper light-shielding area 301 of the curtain 3 remains in the fully retracted state, and the lower electric winding device 2 releases the lower light-shielding area 302 of the curtain 3 to the fully open state; The electric roller blind switches from the first use state to the fifth use state in the following manner: the upper electric unwinding device 1 releases the upper light-shielding area 301 of the blind 3 to the fully open state, and the lower electric unwinding device 2 does not operate so that the lower light-shielding area 302 of the blind 3 remains in the fully retracted state; The electric roller blind switches from the first use state to the sixth use state in the following manner: the upper electric unwinding device 1 releases the upper shading area 301 of the blind 3 to a half-open state, and the lower electric unwinding device 2 releases the upper shading area 301 of the blind 3 to a half-open state; The electric roller blind switches from the second use state to the first use state in the following manner: the upper electric winding device 1 does not work so that the upper light-shielding area 301 of the curtain 3 remains in the fully retracted state, and the lower electric winding device 2 retracts the lower light-shielding area 302 of the curtain 3 to the fully retracted state; The electric roller blind switches from the second use state to the third use state in the following manner: the upper electric winding device 1 releases the upper shading area 301 of the curtain 3 to a half-open state, and the lower electric winding device 2 rewinds the lower shading area 302 of the curtain 3 to a fully retracted state; The electric roller blind switches from the second use state to the fourth use state in the following manner: the upper electric winding device 1 does not work so that the upper light-shielding area 301 of the curtain 3 remains in the fully retracted state, and the lower electric winding device 2 releases the lower light-shielding area 302 of the curtain 3 to the fully open state; The electric roller blind switches from the second use state to the fifth use state in the following manner: the upper electric winding device 1 releases the upper shading area 301 of the curtain 3 to the fully open state, and the lower electric winding device 2 rewinds the lower shading area 302 of the curtain 3 to the fully retracted state; The electric roller blind switches from the second use state to the sixth use state in the following manner: the upper electric unwinding device 1 releases the upper shading area 301 of the curtain 3 to a half-open state, and the lower electric unwinding device 2 does not operate so that the lower shading area 302 of the curtain 3 remains in the half-open state; The electric roller blind switches from the third use state to the first use state in the following manner: the upper electric winding device 1 winds up the upper light-shielding area 301 of the curtain 3 to a fully retracted state, and the lower electric winding device 2 does not operate so that the lower light-shielding area 302 of the curtain 3 remains in a fully retracted state; The electric roller blind switches from the third use state to the second use state in the following manner: the upper electric winding device 1 rewinds the upper shading area 301 of the curtain 3 to a fully retracted state, and the lower electric winding device 2 releases the lower shading area 302 of the curtain 3 to a half-open state; The electric roller blind switches from the third use state to the fourth use state in the following manner: the upper electric winding device 1 rewinds the upper light-shielding area 301 of the curtain 3 to a fully retracted state, and the lower electric winding device 2 releases the lower light-shielding area 302 of the curtain 3 to a fully open state; The electric roller blind switches from the third use state to the fifth use state in the following manner: the upper electric unwinding device 1 releases the upper light-shielding area 301 of the blind 3 to the fully open state, and the lower electric unwinding device 2 does not operate so that the lower light-shielding area 302 of the blind 3 remains in the fully retracted state; The electric roller blind switches from the third use state to the sixth use state in the following manner: the upper electric unwinding device 1 does not work so that the upper shading area 301 of the curtain 3 remains in a half-open state, and the lower electric unwinding device 2 releases the lower shading area 302 of the curtain 3 to a half-open state; The electric roller blind switches from the fourth use state to the first use state in the following manner: the upper electric winding device 1 does not operate so that the upper light-shielding area 301 of the curtain 3 remains in the fully retracted state, and the lower electric winding device 2 retracts the lower light-shielding area 302 of the curtain 3 to the fully retracted state; The electric roller blind switches from the fourth use state to the second use state in the following manner: the upper electric winding device 1 does not operate so that the upper light-shielding area 301 of the curtain 3 remains in a fully retracted state, and the lower electric winding device 2 retracts the lower light-shielding area 302 of the curtain 3 to a half-open state; The electric roller blind switches from the fourth use state to the third use state in the following manner: the upper electric winding device 1 releases the lower light-shielding area 302 of the blind 3 to a half-open state, and the lower electric winding device 2 rewinds the lower light-shielding area 302 of the blind 3 to a fully retracted state; The electric roller blind switches from the fourth use state to the fifth use state in the following manner: the upper electric unwinding device 1 releases the lower light-shielding area 302 of the blind 3 to the fully open state, and the lower electric unwinding device 2 rewinds the lower light-shielding area 302 of the blind 3 to the fully retracted state; The electric roller blind switches from the fourth use state to the sixth use state in the following manner: the upper electric winding device 1 releases the lower light-shielding area 302 of the blind 3 to a half-open state, and the lower electric winding device 2 rewinds the lower light-shielding area 302 of the blind 3 to a half-open state; The electric roller blind switches from the fifth use state to the first use state in the following manner: the upper electric winding device 1 winds up the upper light-shielding area 301 of the curtain 3 to a fully retracted state, and the lower electric winding device 2 does not operate so that the lower light-shielding area 302 of the curtain 3 remains in a fully retracted state; The electric roller blind switches from the fifth use state to the second use state in the following manner: the upper electric winding device 1 rewinds the upper shading area 301 of the curtain 3 to a fully retracted state, and the lower electric winding device 2 releases the lower shading area 302 of the curtain 3 to a half-open state; The electric roller blind switches from the fifth use state to the third use state in the following manner: the upper electric winding device 1 rewinds the upper light-shielding area 301 of the curtain 3 to a half-open state, and the lower electric winding device 2 does not operate so that the lower light-shielding area 302 of the curtain 3 remains in a fully retracted state; The electric roller blind switches from the fifth use state to the fourth use state in the following manner: the upper electric winding device 1 rewinds the upper light-shielding area 301 of the curtain 3 to a fully retracted state, and the lower electric winding device 2 releases the lower light-shielding area 302 of the curtain 3 to a fully open state; The electric roller blind switches from the fifth use state to the sixth use state in the following manner: the upper electric winding device 1 rewinds the upper shading area 301 of the blind 3 to a half-open state, and the lower electric winding device 2 releases the lower shading area 302 of the blind 3 to a half-open state; The electric roller blind switches from the sixth use state to the first use state in the following manner: the upper electric winding device 1 rewinds the upper light-shielding area 301 of the curtain 3 to a fully retracted state, and the lower electric winding device 2 rewinds the lower light-shielding area 302 of the curtain 3 to a fully retracted state; The electric roller blind switches from the sixth use state to the second use state in the following manner: the upper electric winding device 1 rewinds the upper light-shielding area 301 of the curtain 3 to a fully retracted state, and the lower electric winding device 2 does not operate, so that the lower light-shielding area 302 of the curtain 3 remains in a half-open state; The electric roller blind switches from the sixth use state to the third use state in the following manner: the upper electric winding device 1 stops working, and the lower electric winding device 2 rewinds the lower light-shielding area 302 of the blind 3 to a fully retracted state; The electric roller blind switches from the sixth use state to the fourth use state in the following manner: the upper electric winding device 1 rewinds the upper light-shielding area 301 of the curtain 3 to a fully retracted state, and the lower electric winding device 2 releases the lower light-shielding area 302 of the curtain 3 to a fully open state; The electric roller blind switches from the sixth usage state to the fifth usage state in the following manner: the upper electric winding device 1 releases the upper shading area 301 of the curtain 3 to the fully open state, and the lower electric winding device 2 reels the lower shading area 302 of the curtain 3 to the fully retracted state.

[0050] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present invention.

Claims

1. An electric roller blind, characterized by: It includes an upper electric winding device, a lower electric winding device, and curtain fabric; The upper electric winding device and the lower electric winding device are separately arranged up and down, and the upper electric winding device and the lower electric winding device are respectively connected to the upper and lower sides of the curtain cloth, and the upper electric winding device and the lower electric winding device are both used to drive the curtain cloth to be wound up and released; The curtain fabric comprises an upper shading area and a lower shading area which are adjacent to each other. The shading rate of the upper shading area is lower than that of the lower shading area.

2. The electric roller blind according to claim 1, wherein: The upper electric winding and unwinding device comprises an upper tubular motor, and the upper side of the curtain is connected to the rotor of the upper tubular motor.

3. The electric roller blind according to claim 2, wherein: The upper side of the curtain forms a connection area, which is connected to the rotor of the upper tubular motor. The connection area is provided with a plurality of hard guide reinforcement strips, each of which is arranged at intervals in the connection area and parallel to the upper tubular motor.

4. The electric roller blind according to claim 3, wherein: The guide reinforcement strip is made of plastic or metal; the guide reinforcement strip is bonded to the connection area or sewn together with sutures.

5. The electric roller blind according to claim 3, wherein: The connecting area of the curtain is connected to the upper tubular motor through at least two connecting ropes, and the connecting ropes are detachably connected to the connecting area.

6. The electric roller blind according to claim 1, wherein: The lower electric winding and unwinding device includes a protective box and a lower tubular motor installed in the protective box; the rotor of the lower tubular motor is provided with a connecting slot along its axial direction; the protective box is provided with an entry and exit slot along its axial direction; an end surface of at least one end of the protective box is provided with a disassembly opening, the disassembly opening being connected to the entry and exit slot, and the disassembly opening is equipped with a disassembly cover for opening and closing the disassembly opening; The curtain moves through the inlet and outlet slots of the protection box. A connecting seat is provided on the lower side of the curtain. The connecting seat is slidably matched with the connecting slot of the lower tubular motor, and the connecting seat and the connecting slot are circumferentially limited and radially limited.

7. The electric roller blind according to claim 6, wherein: The protection box has two opposite bent plates, and the entry and exit slot is formed between the two bent plates.

8. The electric roller blind according to claim 6, wherein: One side of the disassembly cover is pivotally connected to one side of the disassembly opening, and the other side of the disassembly cover is movably buckled with the protection box.

9. The electric roller blind according to claim 6, wherein: When the disassembly cover closes the disassembly opening, the disassembly cover is flush with the end surface of the protection box where the disassembly opening is provided.

10. A method for switching the use state of an electric roller blind according to claim 1, characterized in that: The electric rolling curtain has a first use state, a second use state, a third use state, a fourth use state and a fifth use state; when the electric rolling curtain is in the first use state, the upper shading area and the lower shading area of the curtain are respectively rolled up to a fully retracted state by the upper electric rolling device and the lower electric rolling device; when the electric rolling curtain is in the second use state, the upper shading area of the curtain is rolled up to a fully retracted state by the upper electric rolling device, and the lower shading area of the curtain is released to a half-open state by the lower electric rolling device; when the electric rolling curtain is in the third use state , the upper shading area of the curtain is released to a half-open state by the upper electric winding device, and the lower shading area of the curtain is rolled up to a fully rolled up state by the lower electric winding device; when the electric rolling curtain is in the fourth use state, the upper shading area of the curtain is rolled up to a fully rolled up state by the upper electric winding device, and the lower shading area of the curtain is released to a fully open state by the lower electric winding device; when the electric rolling curtain is in the fifth use state, the upper shading area of the curtain is released to a fully open state by the upper electric winding device, and the lower shading area of the curtain is rolled up to a fully rolled up state by the lower electric winding device; The electric roller blind switches from the first use state to the second use state in the following manner: the upper electric winding device does not work, and the lower electric winding device releases the lower shading area of the blind to a half-open state; The electric roller blind switches from the first use state to the third use state in the following manner: the upper electric winding device releases the upper light-shielding area of the blind to a half-open state, and the lower electric winding device does not work; The electric roller blind switches from the first use state to the fourth use state in the following manner: the upper electric winding device does not work, and the lower electric winding device releases the lower shading area of the blind to the fully open state; The electric roller blind switches from the first use state to the fifth use state in the following manner: the upper electric winding device releases the upper light-shielding area of the blind to the fully open state, and the lower electric winding device does not work; The electric roller blind switches from the second use state to the first use state in the following manner: the upper electric winding device does not work, and the lower electric winding device rewinds the lower light-shielding area of the blind to a fully retracted state; The electric roller blind switches from the second use state to the third use state in the following manner: the upper electric winding device releases the upper light-shielding area of the blind to a half-open state, and the lower electric winding device rewinds the lower light-shielding area of the blind to a fully retracted state; The electric roller blind switches from the second use state to the fourth use state in the following manner: the upper electric winding device does not work, and the lower electric winding device releases the lower shading area of the blind to the fully open state; The electric roller blind switches from the second use state to the fifth use state in the following manner: the upper electric winding device releases the upper light-shielding area of the blind to a fully open state, and the lower electric winding device rewinds the lower light-shielding area of the blind to a fully retracted state; The electric roller blind switches from the third use state to the first use state in the following manner: the upper electric winding device rewinds the upper light-shielding area of the blind to a fully retracted state, and the lower electric winding device does not operate; The electric roller blind switches from the third use state to the second use state in the following manner: the upper electric winding device reels the upper light-shielding area of the blind to a fully retracted state, and the lower electric winding device releases the lower light-shielding area of the blind to a half-open state; The electric roller blind switches from the third use state to the fourth use state in the following manner: the upper electric winding device reels the upper light-shielding area of the blind to a fully retracted state, and the lower electric winding device releases the lower light-shielding area of the blind to a fully open state; The electric roller blind switches from the third use state to the fifth use state in the following manner: the upper electric winding device releases the upper light-shielding area of the blind to the fully open state, and the lower electric winding device does not work; The electric roller blind switches from the fourth use state to the first use state in the following manner: the upper electric winding device does not work, and the lower electric winding device rewinds the lower light-shielding area of the blind to a fully retracted state; The electric roller blind switches from the fourth use state to the second use state in the following manner: the upper electric winding device does not work, and the lower electric winding device rolls up the lower light-shielding area of the blind to a half-open state; The electric roller blind switches from the fourth use state to the third use state in the following manner: the upper electric winding device releases the lower light-shielding area of the blind to a half-open state, and the lower electric winding device rewinds the lower light-shielding area of the blind to a fully retracted state; The electric roller blind switches from the fourth use state to the fifth use state in the following manner: the upper electric winding device releases the lower light-shielding area of the blind to a fully open state, and the lower electric winding device rewinds the lower light-shielding area of the blind to a fully retracted state; The electric roller blind switches from the fifth use state to the first use state in the following manner: the upper electric winding device rewinds the upper light-shielding area of the blind to a fully retracted state, and the lower electric winding device does not operate; The electric roller blind switches from the fifth use state to the second use state in the following manner: the upper electric winding device reels the upper light-shielding area of the blind to a fully retracted state, and the lower electric winding device releases the lower light-shielding area of the blind to a half-open state; The electric roller blind switches from the fifth use state to the third use state in the following manner: the upper electric winding device rewinds the upper light-shielding area of the blind to a half-open state, and the lower electric winding device does not operate; The electric roller blind switches from the fifth usage state to the fourth usage state in the following manner: the upper electric winding device reels the upper shading area of the curtain to a fully retracted state, and the lower electric winding device releases the lower shading area of the curtain to a fully open state.

11. The method for switching the use state of an electric roller blind according to claim 10, wherein: The electric roller blind also has a sixth use state; when the electric roller blind is in the sixth use state, the upper shading area of the curtain is released to a half-open state by the upper electric winding device, and the lower shading area of the curtain is released to a half-open state by the lower electric winding device; The electric roller blind switches from the first use state to the sixth use state in the following manner: the upper electric winding device releases the upper light-shielding area of the blind to a half-open state, and the lower electric winding device releases the upper light-shielding area of the blind to a half-open state; The electric roller blind switches from the second use state to the sixth use state in the following manner: the upper electric winding device releases the upper light-shielding area of the blind to a half-open state, and the lower electric winding device does not work; The electric roller blind switches from the third use state to the sixth use state in the following manner: the upper electric winding device does not work, and the lower electric winding device releases the lower shading area of the blind to a half-open state; The electric roller blind switches from the fourth use state to the sixth use state in the following manner: the upper electric winding device releases the lower light-shielding area of the blind to a half-open state, and the lower electric winding device rewinds the lower light-shielding area of the blind to a half-open state; The electric roller blind switches from the fifth use state to the sixth use state in the following manner: the upper electric winding device rewinds the upper light-shielding area of the blind to a half-open state, and the lower electric winding device releases the lower light-shielding area of the blind to a half-open state; The electric roller blind switches from the sixth use state to the first use state in the following manner: the upper electric winding device reels the upper light-shielding area of the blind to a fully retracted state, and the lower electric winding device reels the lower light-shielding area of the blind to a fully retracted state; The electric roller blind switches from the sixth use state to the second use state in the following manner: the upper electric winding device rewinds the upper light-shielding area of the blind to a fully retracted state, and the lower electric winding device does not operate; The electric roller blind switches from the sixth use state to the third use state in the following manner: the upper electric winding device does not work, and the lower electric winding device rewinds the lower light-shielding area of the blind to a fully retracted state; The electric roller blind switches from the sixth use state to the fourth use state in the following manner: the upper electric winding device reels the upper light-shielding area of the blind to a fully retracted state, and the lower electric winding device releases the lower light-shielding area of the blind to a fully open state; The electric roller blind switches from the sixth usage state to the fifth usage state in the following manner: the upper electric winding device releases the upper shading area of the curtain to a fully open state, and the lower electric winding device reels the lower shading area of the curtain to a fully retracted state.

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