Electric stay wire curtain device

Abstract

The utility model relates to the technical field of projection screens, and particularly discloses an electric stay wire curtain device which comprises a controller, a suspension box, a first end cover, a second end cover, a bottom cover, a curtain and a tubular motor. The controller is installed on the hanging box, the first end cover and the second end cover are arranged at the two ends of the hanging box respectively to form a curtain bin, and a curtain telescopic hole is formed in the bottom of the hanging box. The two ends of a rotating shaft of the tubular motor are sleeved with a first mounting head and a second mounting head correspondingly. The two side edges of the curtain are respectively provided with a pull wire which cooperates with the bending of the curtain. A tension sensor is arranged on the pull wire, and the controller is electrically connected with the tension sensor and the tubular motor; a self-repairing protective coating is arranged on the surface of the curtain, an electrostriction layer is arranged on the back face of the curtain, and infrared positioning marks are arranged on the edge of the curtain. The problems that a projection screen surface of an existing projection screen is prone to damage, the projection contrast ratio is low, and dynamic tension of a pull wire is unbalanced are solved.

Description

Technical Field

[0001] This utility model relates to the field of projection screen technology, and specifically discloses an electric pull-out screen device. Background Technology

[0002] With the iteration of display technology and the diversification of application scenarios, the durability and functionality requirements of projection screens continue to upgrade. Traditional screens often face challenges such as mechanical wear, environmental corrosion, optical performance degradation, and dynamic tension imbalance of the traction cable, making it imperative to improve the overall performance of projection screens.

[0003] Currently, projection screens on the market suffer from low contrast due to interference from ambient light, and their surfaces lack protective functions and safeguards, leading to frequent scratches and direct damage.

[0004] For example, Chinese utility model patent application number 201821943139.X discloses an electric pull-out screen structure, including an outer cover, a roller, a rod motor, a nylon sleeve, an inner lining, a PCB board, a first end cover, a second end cover, a cover plate, an end sleeve, a projection screen, a lower shaft, threads, a spring, a lock core, a bottom end cover, a knob, and mounting holes. The roller is housed inside the outer cover, and a rod motor is fixedly fitted inside the roller. An inner lining is welded to one side of the inner wall of the outer cover, and one end of the rod motor is bolted to one side of the outer wall of the inner lining. A PCB board is located inside the outer cover on one side of the inner lining, and end sleeves are fitted at both ends of the roller. This projection screen has a compact and reasonable structure and is easy to use; it increases the projection viewing angle and effectively solves the problem of screen flatness. However, this patent cannot solve the problem of low projection contrast caused by ambient light interference, nor can it solve the problem of easily damaged projection screen surfaces. Utility Model Content

[0005] The purpose of this invention is to provide an electric pull-out screen device to solve the problems of easy damage to the projection screen surface, low projection contrast, and unbalanced dynamic tension of the pull line in existing projection screens.

[0006] The specific solution of this utility model is as follows:

[0007] An electric pull-string curtain device includes a controller, a suspension box, a first end cover, a second end cover, a bottom cover, a curtain, and a tubular motor. The controller is mounted on the suspension box. The first and second end covers are respectively located at both ends of the suspension box to form curtain compartments. A curtain telescopic hole is provided at the bottom of the suspension box. The bottom cover is mounted on the curtain telescopic hole. The two ends of the tubular motor are respectively connected to the first and second end covers. A first mounting head and a second mounting head are respectively fitted onto both ends of the rotating shaft of the tubular motor. The upper end of the curtain is connected to the first and second mounting heads, and the lower end of the curtain is connected to the bottom cover. Pull lines for bending the curtain are respectively provided on both sides of the curtain. Tension sensors are provided on the pull lines. The controller is electrically connected to the tension sensors and the tubular motor. A self-healing protective coating is provided on the surface of the curtain, an electrostrictive layer is provided on the back of the curtain, and infrared positioning marks are provided on the edges of the curtain.

[0008] In some embodiments, a miniature fan and a temperature and humidity sensor are provided inside the hanging box, and a ventilation hole is provided at the bottom of the hanging box. The controller is electrically connected to the miniature fan and the temperature and humidity sensor respectively.

[0009] In some embodiments, tension adjustment motors are symmetrically arranged on the bottom cover. The two tension adjustment motors are electrically connected to the controller. One end of a traction line is connected to the first mounting head, and the other end is connected to the output shaft of one tension adjustment motor. One end of another traction line is connected to the second mounting head, and the other end is connected to the output shaft of another tension adjustment motor.

[0010] In some embodiments, the self-healing protective coating includes a polyurethane coating and an epoxy resin base layer, wherein the epoxy resin base layer is disposed on the surface of the curtain and the polyurethane coating is disposed on the epoxy resin base layer.

[0011] In some embodiments, the surface of the polyurethane coating is an anti-glare microprism structure.

[0012] In some embodiments, the prism tilt angle of the anti-glare microprism structure is 15°.

[0013] In some embodiments, the bottom cover and the curtain telescopic hole are detachably connected.

[0014] In some embodiments, magnetic strips are respectively provided on the hanging boxes at both ends of the telescopic hole of the screen, and magnetic blocks that cooperate with the magnetic strips are respectively provided in the two ends of the bottom cover. The bottom cover covers the telescopic hole of the screen through the cooperation of the magnetic strips and magnetic blocks.

[0015] In some embodiments, slots are provided on the hanging boxes at both ends of the telescopic hole of the screen, and blocks that cooperate with the slots are provided on both ends of the bottom cover. The bottom cover covers the telescopic hole of the screen through the cooperation of the slots and the blocks.

[0016] In some embodiments, the electrostrictive layer is a nickel-titanium alloy wire mesh.

[0017] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0018] 1. This utility model uses a tension sensor and a tension adjustment motor controlled by a controller to adjust the dynamic tension of the traction lines, thus balancing the dynamic tension of the two traction lines. A self-healing protective coating composed of a polyurethane coating and an epoxy resin base layer protects the projection screen, making it less susceptible to damage. The self-healing structure of the polyurethane coating increases the screen's deformation recovery ability, preventing scratches and yellowing caused by UV suppression. The epoxy resin base layer effectively resists acid and alkali corrosion and mechanical stress impact, and is also waterproof. During installation and use, automatic focusing and positioning of the projector can be achieved through infrared positioning markers in conjunction with the projector's automatic positioning device.

[0019] 2. When the humidity inside the box is greater than 70%, the temperature and humidity inside the box can be adjusted by starting the miniature fan and temperature and humidity sensor through the controller.

[0020] 3. The anti-glare microprism structure reduces ambient light interference and enhances projection contrast. The prism tilt angle of the anti-glare microprism structure is 15°, which can reduce ambient light reflection by 60%.

[0021] 4. Quick replacement is achieved through the detachable connection of the bottom cover and the telescopic hole of the curtain.

[0022] 5. By adding an electrostrictive layer, a shape memory structure can be formed. The nickel-titanium alloy wire mesh has a shrinkage rate of 4% when the temperature is above 35℃, which can realize automatic tensioning of the curtain. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of an electric pull-string curtain device in Embodiment 1 of this utility model.

[0024] Figure 2 This is a schematic diagram of the structure of an electric pull-string curtain device in Embodiment 2 of this utility model.

[0025] Figure 3 This is a cross-sectional view of the curtain in an embodiment of this utility model.

[0026] Figure 4 This is an enlarged view of point A in an embodiment of this utility model.

[0027] Figure 5 This is a block diagram of the control circuit in this utility model.

[0028] Reference numerals: 1-Suspension box, 2-First end cap, 3-Second end cap, 4-Bottom cap, 5-Curtain, 6-Tube motor, 61-First mounting head, 62-Second mounting head, 7-Traction line, 8-Tension sensor, 9-Self-healing protective coating, 91-Polyurethane coating, 92-Epoxy resin base layer, 10-Electrostrictive layer, 11-Controller, 12-Infrared positioning mark, 13-Tension adjustment motor, 14-Magnetic strip, 15-Magnetic block, 16-Card slot, 17-Card block, 18-Miniature fan, 19-Temperature and humidity sensor, 20-Ventilation hole. Detailed Implementation

[0029] The specific implementation method is described below with reference to the accompanying drawings.

[0030] Example 1

[0031] An electric pull-string curtain device, such as Figure 1 , Figure 3 and Figure 5 As shown, an electric pull-out curtain device includes a controller 11, a hanging box 1, a first end cover 2, a second end cover 3, a bottom cover 4, a curtain 5, and a tubular motor 6. The controller 11 is mounted on the hanging box. The first end cover 2 and the second end cover 3 are respectively located at both ends of the hanging box to form curtain compartments. The bottom of the hanging box is provided with a curtain telescopic hole. The bottom cover 4 is mounted on the curtain telescopic hole. The two ends of the tubular motor are respectively connected to the first end cover 2 and the second end cover 3. The two ends of the rotating shaft of the tubular motor are respectively fitted with a first mounting head 61 and a second mounting head 62. The upper end of the curtain is connected to the first mounting head 61 and the second mounting head 62 respectively. The tubular motor 6 rotates, causing the first mounting head 61 and the second mounting head 62 to rotate synchronously. The synchronous rotation of the first mounting head 61 and the second mounting head 62 causes the lower end of the curtain to pass through the curtain telescopic hole and extend out of the curtain compartment. The lower end of the curtain is connected to the bottom cover 4. Traction lines 7 are respectively provided on both sides of the curtain to cooperate with the bending of the curtain 5. Tension sensors 8 are provided on the traction lines. The controller 11 is electrically connected to the tension sensor 8 and the tubular motor 6 respectively. The surface of the curtain is provided with a self-healing protective coating 9, the back of the curtain is provided with an electrostrictive layer 10, and the edge of the curtain is provided with an infrared positioning mark 12.

[0032] The tension sensor 8 and the tension adjustment motor 13 are controlled by the controller 11 to adjust the dynamic tension of the traction line, so that the dynamic tension of the two traction lines is balanced. The self-healing protective coating 9 protects the projection screen surface, making the projection screen surface less susceptible to damage. During installation and use, the infrared positioning mark 12 works in conjunction with the automatic positioning device on the projector to achieve automatic focusing and positioning of the projector.

[0033] Among them, the tubular motor 6 is the matter25-2 type motor with remote control produced by Huizhou Zhimei Internet Technology Co., Ltd., which can be purchased directly on the market; or the tubular motor 6 is the EMLUX brand 25mm graffiti WIFI AC version tubular motor 6 produced by Guangdong Yushun Intelligent Technology Co., Ltd. Both of these tubular motors 6 can realize remote control of the opening or closing of the curtain.

[0034] The controller 11 has WIFI functionality, enabling remote control.

[0035] In some embodiments, a miniature fan 18 and a temperature and humidity sensor 19 are provided inside the hanging box, and a ventilation hole 20 is provided at the bottom of the hanging box. The controller 11 is electrically connected to the miniature fan 18 and the temperature and humidity sensor 19 respectively.

[0036] When the humidity inside the box is greater than 70%, the temperature and humidity inside the box can be regulated by starting the micro fan 18 and the temperature and humidity sensor 19 through the controller 11.

[0037] In some embodiments, tension adjustment motors 13 are symmetrically arranged on the bottom cover. The two tension adjustment motors 13 are electrically connected to the controller 11 respectively. One end of a traction line is connected to the first mounting head 61, and the other end is connected to the output shaft of a tension adjustment motor. One end of another traction line is connected to the second mounting head 62, and the other end is connected to the output shaft of another tension adjustment motor.

[0038] In some embodiments, the self-healing protective coating 9 includes a polyurethane coating 91 and an epoxy resin base layer 92, wherein the epoxy resin base layer 92 is disposed on the surface of the curtain and the polyurethane coating 91 is disposed on the epoxy resin base layer.

[0039] The self-healing structure formed by the polyurethane coating 91 increases the deformation recovery ability of the curtain, preventing not only scratches but also yellowing caused by UV suppression; the epoxy resin base layer 92 not only effectively resists acid and alkali corrosion and mechanical stress impact but is also waterproof.

[0040] In some embodiments, the surface of the polyurethane coating is an anti-glare microprism structure.

[0041] The anti-glare microprism structure reduces ambient light interference and enhances projection contrast.

[0042] In some embodiments, such as Figure 4 As shown, the prism tilt angle of the anti-glare microprism structure is 15°.

[0043] The anti-glare microprism structure has a prism tilt angle of 15°, which can reduce ambient light reflection by 60%.

[0044] In some embodiments, the bottom cover 4 and the curtain telescopic hole are detachably connected.

[0045] In some embodiments, magnetic strips 14 are respectively provided on the hanging boxes at both ends of the telescopic hole of the screen, and magnetic blocks 15 that cooperate with the magnetic strips 14 are respectively provided in the two ends of the bottom cover. The bottom cover 4 covers the telescopic hole of the screen through the cooperation of the magnetic strips 14 and the magnetic blocks 15.

[0046] The bottom cover 4 is detachably connected to the curtain telescopic hole through the cooperation of magnetic strip 14 and magnetic block 15, so as to achieve quick replacement.

[0047] In some embodiments, the electrostrictive layer 10 is a nickel-titanium alloy wire mesh.

[0048] By adding an electrostrictive layer 10, a shape memory structure can be formed. The shrinkage rate of the nickel-titanium alloy wire mesh reaches 4% when the temperature is greater than 35℃, which can realize automatic tensioning of the curtain 5.

[0049] In some embodiments, the first end cap 2 and the second end cap 3 are respectively provided with a hanging lug for installation and fixation to the wall.

[0050] Example 2

[0051] An electric pull-string curtain device, such as Figure 2 , Figure 3 and Figure 5 As shown, an electric pull-out curtain device includes a controller 11, a hanging box 1, a first end cover 2, a second end cover 3, a bottom cover 4, a curtain 5, and a tubular motor 6. The controller 11 is mounted on the hanging box. The first end cover 2 and the second end cover 3 are respectively located at both ends of the hanging box to form curtain compartments. The bottom of the hanging box is provided with a curtain telescopic hole. The bottom cover 4 is mounted on the curtain telescopic hole. The two ends of the tubular motor are respectively connected to the first end cover 2 and the second end cover 3. The two ends of the rotating shaft of the tubular motor are respectively fitted with a first mounting head 61 and a second mounting head 62. The upper end of the curtain is connected to the first mounting head 61 and the second mounting head 62 respectively. The tubular motor 6 rotates, causing the first mounting head 61 and the second mounting head 62 to rotate synchronously. The synchronous rotation of the first mounting head 61 and the second mounting head 62 causes the lower end of the curtain to pass through the curtain telescopic hole and extend out of the curtain compartment. The lower end of the curtain is connected to the bottom cover 4. Traction lines 7 are respectively provided on both sides of the curtain to cooperate with the bending of the curtain 5. Tension sensors 8 are provided on the traction lines. The controller 11 is electrically connected to the tension sensor 8 and the tubular motor 6 respectively. The surface of the curtain is provided with a self-healing protective coating 9, the back of the curtain is provided with an electrostrictive layer 10, and the edge of the curtain is provided with an infrared positioning mark 12.

[0052] The tension sensor 8 and the tension adjustment motor 13 are controlled by the controller 11 to adjust the dynamic tension of the traction line, so that the dynamic tension of the two traction lines is balanced. The self-healing protective coating 9 protects the projection screen surface, making the projection screen surface less susceptible to damage. During installation and use, the infrared positioning mark 12 works in conjunction with the automatic positioning device on the projector to achieve automatic focusing and positioning of the projector.

[0053] Among them, the tubular motor 6 is the matter25-2 type motor with remote control produced by Huizhou Zhimei Internet Technology Co., Ltd., which can be purchased directly on the market; or the tubular motor 6 is the EMLUX brand 25mm graffiti WIFI AC version tubular motor 6 produced by Guangdong Yushun Intelligent Technology Co., Ltd. Both of these tubular motors 6 can realize remote control of the opening or closing of the curtain.

[0054] The controller 11 has WIFI functionality, enabling remote control.

[0055] In some embodiments, a miniature fan 18 and a temperature and humidity sensor 19 are provided inside the hanging box, and a ventilation hole 20 is provided at the bottom of the hanging box. The controller 11 is electrically connected to the miniature fan 18 and the temperature and humidity sensor 19 respectively.

[0056] When the humidity inside the box is greater than 70%, the temperature and humidity inside the box can be regulated by starting the micro fan 18 and the temperature and humidity sensor 19 through the controller 11.

[0057] In some embodiments, tension adjustment motors 13 are symmetrically arranged on the bottom cover. The two tension adjustment motors 13 are electrically connected to the controller 11 respectively. One end of a traction line is connected to the first mounting head 61, and the other end is connected to the output shaft of a tension adjustment motor. One end of another traction line is connected to the second mounting head 62, and the other end is connected to the output shaft of another tension adjustment motor.

[0058] In some embodiments, the self-healing protective coating 9 includes a polyurethane coating 91 and an epoxy resin base layer 92, wherein the epoxy resin base layer 92 is disposed on the surface of the curtain and the polyurethane coating 91 is disposed on the epoxy resin base layer.

[0059] The self-healing structure formed by the polyurethane coating 91 increases the deformation recovery ability of the curtain, preventing not only scratches but also yellowing caused by UV suppression; the epoxy resin base layer 92 not only effectively resists acid and alkali corrosion and mechanical stress impact but is also waterproof.

[0060] In some embodiments, the surface of the polyurethane coating is an anti-glare microprism structure.

[0061] The anti-glare microprism structure reduces ambient light interference and enhances projection contrast.

[0062] In some embodiments, such as Figure 4 As shown, the prism tilt angle of the anti-glare microprism structure is 15°.

[0063] The anti-glare microprism structure has a prism tilt angle of 15°, which can reduce ambient light reflection by 60%.

[0064] In some embodiments, the bottom cover 4 and the curtain telescopic hole are detachably connected.

[0065] In some embodiments, slots 16 are provided on the hanging boxes at both ends of the telescopic hole of the screen, and blocks 17 that cooperate with the slots 16 are provided on both ends of the bottom cover 4. The bottom cover 4 covers the telescopic hole of the screen through the cooperation of the slots 16 and the blocks 17.

[0066] The bottom cover 4 is detachably connected to the curtain telescopic hole through the slot 16 and the block 17 to achieve quick replacement.

[0067] In some embodiments, the electrostrictive layer 10 is a nickel-titanium alloy wire mesh.

[0068] By adding an electrostrictive layer 10, a shape memory structure can be formed. The shrinkage rate of the nickel-titanium alloy wire mesh reaches 4% when the temperature is greater than 35℃, which can realize automatic tensioning of the curtain 5.

[0069] In some embodiments, the first end cap 2 and the second end cap 3 are respectively provided with a hanging lug for installation and fixation to the wall.

[0070] This utility model is not limited to the above embodiments. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model shall be included within the protection scope of this utility model.

Claims

1. An electric pull-string curtain device, characterized in that: The device includes a controller, a suspension box, a first end cover, a second end cover, a bottom cover, a screen, and a tubular motor. The controller is mounted on the suspension box. The first and second end covers are respectively located at both ends of the suspension box to form screen compartments. The bottom of the suspension box has a screen telescopic hole. The bottom cover is mounted on the screen telescopic hole. The two ends of the tubular motor are connected to the first and second end covers, respectively. The two ends of the rotating shaft of the tubular motor are respectively fitted with a first mounting head and a second mounting head. The upper end of the screen is connected to the first and second mounting heads, and the lower end of the screen is connected to the bottom cover. Traction lines for bending the screen are respectively provided on both sides of the screen. Tension sensors are provided on the traction lines. The controller is electrically connected to the tension sensors and the tubular motor. The surface of the screen is provided with a self-healing protective coating, the back of the screen is provided with an electrostrictive layer, and the edges of the screen are provided with infrared positioning marks.

2. The electric pull-string curtain device according to claim 1, characterized in that: The hanging box is equipped with a miniature fan and a temperature and humidity sensor. The bottom of the hanging box has ventilation holes. The controller is electrically connected to the miniature fan and the temperature and humidity sensor respectively.

3. The electric pull-string curtain device according to claim 1, characterized in that: The bottom cover is symmetrically equipped with tension adjustment motors. The two tension adjustment motors are electrically connected to the controller. One end of a traction line is connected to the first mounting head, and the other end is connected to the output shaft of one tension adjustment motor. One end of the other traction line is connected to the second mounting head, and the other end is connected to the output shaft of another tension adjustment motor.

4. The electric pull-string curtain device according to claim 1, characterized in that: The self-healing protective coating includes a polyurethane coating and an epoxy resin base layer. The epoxy resin base layer is disposed on the surface of the curtain, and the polyurethane coating is disposed on the epoxy resin base layer.

5. The electric pull-string curtain device according to claim 4, characterized in that: The surface of the polyurethane coating has an anti-glare microprism structure.

6. The electric pull-string curtain device according to claim 5, characterized in that: The prism tilt angle of the anti-glare microprism structure is 15°.

7. The electric pull-string curtain device according to claim 1, characterized in that: The bottom cover and the curtain telescopic hole are detachably connected.

8. The electric pull-string curtain device according to claim 7, characterized in that: Magnetic strips are respectively installed on the hanging boxes at both ends of the telescopic hole of the curtain, and magnetic blocks that cooperate with the magnetic strips are respectively installed in the two ends of the bottom cover. The bottom cover covers the telescopic hole of the curtain through the cooperation of the magnetic strips and magnetic blocks.

9. The electric pull-string curtain device according to claim 7, characterized in that: The screen telescopic hole has slots on the hanging boxes at both ends, and the bottom cover has blocks that cooperate with the slots at both ends. The bottom cover covers the screen telescopic hole by cooperating with the slots and blocks.

10. The electric pull-string curtain device according to claim 1, characterized in that: The electrostrictive layer is a nickel-titanium alloy wire mesh.

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