Electric curtain with double dust removal mechanisms

Abstract

The utility model is applicable to the technical field of projection curtains, and provides an electric curtain with double dust removal mechanisms, which comprises a curtain dust removal storage bin, a curtain storage winding shaft wound with a projection curtain is arranged in the curtain dust removal storage bin, and a curtain rotation driving shaft is sleeved in the curtain storage winding shaft. A curtain driving unit drives a curtain rotation driving shaft so as to drive a curtain storage winding shaft to fold and unfold a projection curtain, a dust sweeping unit is arranged below the curtain storage winding shaft, a dust sweeping brush shaft of the dust sweeping unit is in driving connection with the curtain rotation driving shaft through a gear mechanism, and the dust sweeping unit sweeps dust on the surface of the projection curtain through dust sweeping bristles. Meanwhile, dust is further isolated between the curtain storage winding shaft and the dust sweeping unit through two dust removal sealing strips arranged at intervals, and the double dust removal effect is achieved.

Description

Technical Field

[0001] The utility model is applicable to the technical field of projection screens and provides an electric screen with a double dust removal mechanism. Background Art

[0002] The projection screen is one of the important accessories of the projector and is used as the display component of the projector. The electric screen is one of the common screen types. Currently, most of them use a motor to drive the screen reel to achieve the lifting and lowering operation of the projection screen. Generally speaking, the projection screen will be folded and stored in the storage compartment of the screen reel when not in use. However, during the use of the projection screen, due to the external environment, the surface of the projection screen will often absorb dust. When the screen is rotated and folded, the dust will be pressed on the projection screen due to the squeezing of the winding and is difficult to clean. After years of accumulation, the surface of the screen will be contaminated, seriously affecting the display effect. Utility Model Content

[0003] To this end, the utility model provides an electric screen with a dual dust removal mechanism. A dust sweeping unit is arranged under the screen storage winding shaft. The dust sweeping unit uses dust sweeping brushes to sweep the surface of the projection screen before the screen is rolled up. At the same time, two dust removal sealing strips arranged at intervals between the screen storage winding shaft and the dust sweeping unit are used to further isolate dust.

[0004] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: an electric curtain with a double dust removal mechanism, comprising:

[0005] A curtain dust removal storage bin, wherein a curtain outlet is provided at the bottom of the curtain dust removal storage bin;

[0006] A screen storage shaft is arranged in the screen dust removal storage bin, a projection screen is wound around the outer side of the screen storage shaft, and the lower end of the projection screen passes through the screen outlet and is arranged outside the screen dust removal storage bin;

[0007] The curtain rotation drive shaft is connected to the curtain storage shaft and is used to drive the curtain storage shaft to rotate;

[0008] A curtain drive unit is connected to the curtain rotation drive shaft and is used to drive the curtain rotation drive shaft to rotate;

[0009] The dust sweeping unit comprises a dust sweeping brush shaft, which is driven and connected to the curtain rotation drive shaft through a transmission mechanism, and dust sweeping bristles are arranged on the outer side of the dust sweeping brush shaft.

[0010] Furthermore, the curtain driving unit includes a servo motor and a motor driver, and the motor driver is electrically connected to the servo motor.

[0011] Furthermore, the curtain dust removal storage bin includes a storage shaft bin, the curtain storage shaft is arranged in the storage shaft bin, the left and right sides of the storage shaft bin are respectively provided with a motor mounting bin and a non-actuating end mounting seat, the servo motor is arranged in the motor mounting bin, and a dust sweeping bin is arranged at the lower end of the storage shaft bin, and the dust sweeping unit is arranged in the dust sweeping bin.

[0012] Furthermore, the curtain storage shaft is a hollow structure, and the curtain rotation drive shaft includes a connecting shaft body. Several shaft driving wheels are arranged at fixed intervals along the axial direction on the outside of the connecting shaft body. The outer wall of the shaft driving wheel abuts against the inner wall of the curtain storage shaft, and one end of the curtain storage shaft is rotatably connected to the non-actuating end mounting seat through a bearing mechanism.

[0013] Furthermore, the dust sweeping brush shaft is driven and connected to the curtain rotation drive shaft through a gear transmission mechanism. The curtain dust removal storage bin is also provided with a transmission mechanism bin between the storage winding bin and the motor installation bin. The gear transmission mechanism is arranged in the transmission mechanism bin. The two ends of the dust sweeping brush shaft are respectively rotatably connected to the side wall of the transmission mechanism bin and the non-actuating end mounting seat through a bearing mechanism.

[0014] Furthermore, the screen dust removal storage bin is provided with two dust removal sealing strips at the connection position between the storage shaft bin and the dust sweeping bin. The two dust removal sealing strips are arranged at intervals, and the projection screen passes through the gap between the two dust removal sealing strips.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. In the solution of the present invention, a dust sweeping unit is provided below the screen storage winding shaft, and the dust sweeping brush bristles of the dust sweeping unit sweep the dust on the screen surface before the projection screen is rolled up. At the same time, the dust sweeping brush shaft of the dust sweeping unit is driven and connected to the screen rotation drive shaft through a gear transmission mechanism, so that the dust sweeping brush shaft and the screen storage winding shaft can share a servo motor drive, and the dust sweeping operation is performed only when the screen storage winding shaft is actuated and the projection screen is retracted or extended, without the need for a separate dedicated drive device. At the same time, under this structure, the rotation direction of the dust sweeping brush shaft is opposite to the rotation direction of the screen storage winding shaft, so that the dust sweeping brush bristles can sweep the projection screen surface in the opposite direction of the projection screen retraction or extension, thereby improving the dust sweeping efficiency.

[0017] 2. At the same time, two dust removal sealing strips are set between the screen storage winding shaft and the dust sweeping unit. Before the projection screen enters the storage winding shaft bin, the dust removal sealing strips are used to perform secondary dust removal on the small amount of dust still adsorbed on the projection screen, further improving the dust removal effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1This is a schematic structural diagram of an electric curtain with a double dust removal mechanism mentioned in the present utility model;

[0019] Figure 2 for Figure 1 A schematic diagram of the structure of an electric curtain with a double dust removal mechanism inside a curtain dust removal storage bin;

[0020] Figure 3 for Figure 2 Schematic diagram of the connection structure between the interior of the middle curtain storage shaft, the curtain rotation drive shaft, the curtain dust collection bin, and the non-actuating end mounting seat;

[0021] Figure 4 for Figure 1 A partial cross-sectional diagram in the “AA” direction;

[0022] Figure 5 This is a schematic diagram of the internal structure of the curtain dust removal storage bin mentioned in this utility model.

[0023] In the picture:

[0024] 100, curtain dust collection and storage bin, 110, winding shaft storage bin, 120, dust sweeping bin, 130, transmission mechanism bin, 140, motor installation bin;

[0025] 200, servo motor;

[0026] 300, motor driver;

[0027] 400, curtain rotation drive shaft, 410, connecting shaft, 420, axis driving wheel;

[0028] 500, curtain storage and winding axis;

[0029] 600, projection screen;

[0030] 700, dust sweeping unit, 710, dust sweeping brush shaft, 720, dust sweeping brush bristles;

[0031] 800, dust removal sealing strip;

[0032] 900. Non-actuating end mounting seat. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0034] For example, see the attached Figure 1 The present invention provides an electric curtain with a double dust removal mechanism, including a curtain dust removal storage bin 100, as shown in the attached Figure 2 , Attachment Figure 5 As shown, the screen dust collection bin 100 includes a storage shaft bin 110, in which a screen storage shaft 500 is arranged, and a projection screen 600 is wound around the outer side of the screen storage shaft 500. Figure 3 As shown, the curtain storage shaft 500 is a hollow structure, and the curtain storage shaft 500 is sleeved with a curtain rotation drive shaft 400, and the curtain rotation drive shaft 400 includes a connecting shaft body 410, and a plurality of shaft driving wheels 420 are arranged at fixed intervals along the axial direction on the outside of the connecting shaft body 410, and the outer wall of the shaft driving wheel 420 abuts against the inner wall of the curtain storage shaft 500, and the connecting shaft body 410 can drive the curtain storage shaft 500 to rotate through the shaft driving wheels 420. Compared with driving the curtain storage shaft 500 from one side, this method of driving the curtain storage shaft 500 through multiple shaft driving wheels 420 runs through the interior of the curtain storage shaft 500, and the force on the curtain storage shaft 500 is more uniform, and the problem of excessive force on one side of the curtain storage shaft 500 will not occur. The rotation stability of the curtain storage shaft 500 can be guaranteed even after a long period of operation. The left and right sides of the storage shaft bin 110 are respectively provided with a motor mounting bin 140 and a non-actuating end mounting seat 900. The motor mounting bin 140 is provided with a curtain drive unit. The curtain drive unit includes a servo motor 200 and a motor driver 300. The servo motor 200 and the motor driver 300 are both prior arts. The motor driver 300 is electrically connected to the servo motor 200. The motor driver 300 can be connected to a power source and receive control signals by wire or wireless means, and supply power to the servo motor 200 and send actuation instructions. One end of the curtain storage shaft 500 is rotatably connected to the non-actuating end mounting seat 900 through a bearing mechanism, and the other end is drive-connected to the servo motor 200. Refer to the attached Figure 2 , Attachment Figure 4The storage winding bin 110 is provided with a dust sweeping bin 120 at the lower end, and a screen outlet is provided at the bottom of the dust sweeping bin 120. The lower end of the projection screen 600 passes through the screen outlet and is provided outside the screen dust collection bin 100. A dust sweeping unit 700 is provided in the dust sweeping bin 120. The dust sweeping unit 700 includes a dust sweeping brush shaft 710. The dust sweeping brush shaft 710 is connected to the screen rotation drive shaft 400 through a gear transmission mechanism. In this way, the dust sweeping brush shaft 710 does not require an independent driving device, and the dust sweeping brush shaft 710 is connected to the screen rotation drive shaft 400. The transmission direction of 400 is opposite. The screen dust collection storage bin 100 is further provided with a transmission mechanism bin 130 between the storage winding bin 110 and the motor installation bin 140. The gear transmission mechanism is arranged in the transmission mechanism bin 130. The gear transmission mechanism is placed separately. On the one hand, it ensures the cleanliness of the gear transmission mechanism after long-term operation, and at the same time, it prevents the lubricating oil of the gear transmission mechanism from leaking into other bins to contaminate the projection screen 600. The two ends of the dust sweeping brush shaft 710 are respectively connected to the side wall of the transmission mechanism bin 130 and the non-actuating end mounting seat 900. The bearing mechanism is used to rotate and connect the dust sweeping brush shaft 710 to improve the stability of the dust sweeping brush shaft 710. The dust sweeping brush bristles 720 are arranged on the outside of the dust sweeping brush shaft 710. In this embodiment, the ends of the dust sweeping brush bristles 720 are close to the projection display surface of the projection screen 600. In order to protect the surface of the projection screen 600, the dust sweeping brush bristles 720 are made of a relatively soft rubber material. At the same time, the screen dust collection bin 100 is provided with two dust removal sealing strips 800 at the connection position of the storage winding bin 110 and the dust sweeping bin 120. The two dust removal sealing strips 800 are arranged at intervals. The screen 600 passes through the gap between the two dust removal sealing strips 800. When the projection screen 600 passes through, the dust removal sealing strip 800 can scrape the dust on both sides of the projection screen 600 at the same time. The reason for setting it above the dust sweeping unit 700 is mainly that after the dust sweeping unit 700 cleans, some dust will still be adsorbed on the surface of the projection screen 600. After being swept by the dust sweeping bristles 720, this part of the dust has weak adhesion, so it can be easily scraped off by the dust removal sealing strip 800, further improving the cleaning effect.

[0035] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0036] The above are merely preferred embodiments of the present invention. Anyone skilled in the art may utilize the above-described technical solutions to modify the present invention or create equivalent technical solutions. Therefore, any simple modification or equivalent replacement based on the technical solutions of the present invention falls within the scope of protection claimed by the present invention.

Claims

1. An electric curtain with a double dust removal mechanism, characterized in that: include: A curtain dust removal storage bin (100), wherein a curtain outlet is provided at the bottom of the curtain dust removal storage bin (100); A screen storage shaft (500) is arranged in the screen dust removal storage bin (100), and a projection screen (600) is wound around the outer side of the screen storage shaft (500); A curtain rotation drive shaft (400) is drivingly connected to the curtain storage shaft (500) and is used to drive the curtain storage shaft (500) to rotate; A curtain driving unit is connected to the curtain rotation driving shaft (400) and is used to drive the curtain rotation driving shaft (400) to rotate; The dust sweeping unit (700) comprises a dust sweeping brush shaft (710), wherein the dust sweeping brush shaft (710) is connected to the curtain rotation drive shaft (400) via a transmission mechanism, and dust sweeping bristles (720) are arranged on the outer side of the dust sweeping brush shaft (710).

2. The electric curtain with a dual dust removal mechanism according to claim 1, characterized in that: The curtain drive unit comprises a servo motor (200) and a motor driver (300), and the motor driver (300) is electrically connected to the servo motor (200).

3. The electric curtain with a dual dust removal mechanism according to claim 2, characterized in that: The curtain dust removal storage bin (100) comprises a storage winding bin (110), the curtain storage winding bin (500) is arranged in the storage winding bin (110), a motor mounting bin (140) and a non-actuating end mounting seat (900) are respectively arranged on the left and right sides of the storage winding bin (110), the servo motor (200) is arranged in the motor mounting bin (140), a dust sweeping bin (120) is arranged at the lower end of the storage winding bin (110), and the dust sweeping unit (700) is arranged in the dust sweeping bin (120).

4. The electric curtain with a dual dust removal mechanism according to claim 3, characterized in that: The curtain storage shaft (500) is a hollow structure. The curtain rotation drive shaft (400) includes a connecting shaft (410). A plurality of shaft drive wheels (420) are arranged at fixed intervals along the axial direction on the outer side of the connecting shaft (410). The outer wall of the shaft drive wheel (420) abuts against the inner wall of the curtain storage shaft (500). One end of the curtain storage shaft (500) is rotatably connected to the non-actuating end mounting seat (900) through a bearing mechanism.

5. The electric curtain with a dual dust removal mechanism according to claim 3, characterized in that: The dust sweeping brush shaft (710) is connected to the curtain rotation drive shaft (400) through a gear transmission mechanism. The curtain dust removal storage bin (100) is further provided with a transmission mechanism bin (130) between the storage winding bin (110) and the motor installation bin (140). The gear transmission mechanism is arranged in the transmission mechanism bin (130). The two ends of the dust sweeping brush shaft (710) are respectively connected to the side wall of the transmission mechanism bin (130) and the non-actuating end mounting seat (900) through a bearing mechanism.

6. The electric curtain with a dual dust removal mechanism according to claim 3, characterized in that: The screen dust collection bin (100) is provided with two dust removal sealing strips (800) at the connection position between the storage winding bin (110) and the dust sweeping bin (120), the two dust removal sealing strips (800) being arranged at intervals, and the projection screen (600) passes through the gap between the two dust removal sealing strips (800).

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