Projection curtain capable of being cleaned
By designing a projection screen with sponge strips and automatic winding mechanism, the problem of inconvenience in cleaning the projection screen is solved, and the effect of automatic cleaning during the winding process is achieved.
Patent Information
- Application Number
- CN202422175355.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-05
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-09-05
AI Technical Summary
When cleaning, the existing projection screen is especially high in the upper half of the screen, which is difficult to reach, resulting in inconvenience in cleaning.
A projection screen including a casing, a winding roller, a strip groove, a cleaning groove, a pressing roller and a sponge strip is designed. The sponge strip is close to the surface of the curtain, and the dust is automatically wiped through the rotation of the winding roller to achieve cleaning treatment.
During the curtain rolling process, the sponge strip automatically wipes the dust on the surface of the curtain, simplifying the cleaning process and improving the convenience of cleaning.
Smart Images
Figure CN223022527U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a cleanable projection screen. Background Art
[0002] A projection screen is an important accessory for projection display. It can improve the brightness, contrast and color performance of the projection image, and at the same time reduce the influence of ambient light on the projection effect. When the projection screen is in use, dust will gradually accumulate on the screen, resulting in a deterioration of the performance of the projection image on the screen. It is necessary to clean the dust on the screen to ensure a good projection effect. However, when many existing projection screens are cleaned, usually the user holds a rag to wipe the dust on the screen. However, the upper part of the screen is at a relatively high position, which is easy for the user to not reach. It is necessary to use tools to climb high to clean it, which makes the cleaning of the projection screen not convenient enough. Therefore, it is very necessary to develop a cleanable projection screen to solve the above problems. Content of the Utility Model
[0003] The purpose of the utility model is to provide a cleanable projection screen to solve the problems raised in the above background art.
[0004] To solve the above problems, the utility model adopts the following technical solutions:
[0005] A cleanable projection screen includes a casing. A storage cavity is provided inside the casing. A winding roller is rotatably arranged in the storage cavity. A strip-shaped groove is provided on the bottom wall of the storage cavity. A screen is provided on the winding roller. The screen passes through the strip-shaped groove. A counterweight beam is provided at one end of the strip-shaped groove. A cleaning groove is provided at the bottom of the casing. An extrusion roller is provided in the cleaning groove. A cleaning plate is provided on the front side of the extrusion roller. Slots are provided on both sides of the cleaning groove. The cleaning plate is of a U-shaped structure. The two ends of the cleaning plate are respectively inserted into the two slots. A sponge strip is provided on one side surface of the cleaning plate.
[0006] Preferably, sliding grooves are provided on both side walls of the cleaning groove. Slide bars are provided in the two sliding grooves. Sliders are slidably arranged on the slide bars. Springs are provided between the sliders and the inner walls of the sliding grooves. The extrusion roller is rotatably arranged between the two sliders.
[0007] Preferably, magnetic plates are provided on both side walls of the slot. The magnetic plates are attached to the ends of the cleaning plate.
[0008] Preferably, a layer of double-sided tape is provided on one side surface of the sponge strip. The double-sided tape layer of the sponge strip is attached to the cleaning plate.
[0009] Preferably, a motor is provided on one side of the casing. The output shaft of the motor is connected to the winding roller.
[0010] The beneficial effects of the present utility model are as follows: during the process of rolling up the curtain, the sponge strip can be used to wipe across the surface of the curtain, so as to wipe off the dust on the surface of the curtain, thereby automatically completing the cleaning process of the curtain during the rolling-up process of the curtain, making the cleaning process of the curtain simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art, but it is not a limitation to the protection scope of the present utility model.
[0012] Figure 1 It is a schematic diagram of the overall structure of the present utility model;
[0013] Figure 2 For the present utility model Figure 1 It is a schematic diagram of the structure of the machine housing;
[0014] Figure 3 For the present utility model Figure 1 It is a schematic diagram of the installation of the cleaning plate on the machine housing;
[0015] Figure 4 For the present utility model Figure 3 It is an enlarged schematic diagram at position A;
[0016] In the figure: 11, machine housing; 12, cleaning plate; 13, curtain; 14, counterweight beam; 15, motor; 16, storage cavity; 17, winding roller; 18, strip-shaped groove; 19, cleaning groove; 20, extrusion roller; 21, sponge strip; 22, slot; 23, magnet plate; 24, sliding groove; 25, slider; 26, sliding rod. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0017] Referring to Figures 1 to 4 A cleanable projection curtain shown in the figure, which includes a machine housing 11. A storage cavity 16 is provided inside the machine housing 11. A winding roller 17 is rotatably arranged in the storage cavity 16. A strip-shaped groove 18 is provided on the bottom wall of the storage cavity 16. A curtain 13 is provided on the winding roller 17. The curtain 13 passes through the strip-shaped groove 18. A counterweight beam 14 is provided at one end of the strip-shaped groove 18. A cleaning groove 19 is provided at the bottom of the machine housing 11. An extrusion roller 20 is provided in the cleaning groove 19. A cleaning plate 12 is provided on the front side of the extrusion roller 20. Slots 22 are provided on both sides of the cleaning groove 19. The cleaning plate 12 has a U-shaped structure. The two ends of the cleaning plate 12 are respectively inserted into the two slots 22. A sponge strip 21 is provided on one side surface of the cleaning plate 12.
[0018] Further, sliding grooves 24 are provided on both side walls of the cleaning tank 19. Slide rods 26 are provided in both of the sliding grooves 24. A slider 25 is slidably arranged on the slide rod 26. A spring is provided between the slider 25 and the inner wall of the sliding groove 24. The squeezing roller 20 is rotatably arranged between the two sliders 25. The squeezing roller 20 and the sponge strip 21 respectively abut against both sides of the curtain 13. When the unfolded curtain 13 is wound by the winding roller 17, the sponge strip 21 gradually sweeps across the surface of the curtain 13, thereby wiping off the dust on the surface of the curtain 13 and realizing the cleaning treatment of the curtain 13.
[0019] Further, magnetic plates 23 are provided on both side walls of the slot 22. The magnetic plates 23 are attached to the ends of the cleaning plate 12. The magnetic plates 23 adsorb the cleaning plate 12 made of stainless steel by magnetic force, so that the end of the cleaning plate 12 is stably inserted into the slot 22, thereby stably mounting the cleaning plate 12 on the casing 11.
[0020] Further, a layer of double-sided tape is provided on one side surface of the sponge strip 21. The double-sided tape layer of the sponge strip 21 is attached to the cleaning plate 12. The sponge strip 21 is pasted on the cleaning plate 12 through the double-sided tape. When replacing the sponge strip 21, remove the cleaning plate 12 from the casing 11, tear off the sponge strip 21 from the cleaning plate 12, then uncover the double-sided tape layer of the new sponge strip 21, and then paste the new sponge strip 21 on the cleaning plate 12.
[0021] Further, a motor 15 is provided on one side of the casing 11. The output shaft of the motor 15 is connected to the winding roller 17. Starting the motor 15 causes the winding roller 17 to rotate, so as to control the winding roller 17 to wind or release the curtain 13, thereby realizing the storage or unfolding of the curtain 13.
[0022] The working principle of the present utility model is that the curtain 13 passes between the squeezing roller 20 and the sponge strip 21. The spring between the slider 25 and the slide rod 26 is in a compressed state. Under the action of the spring, the squeezing roller 20 and the sponge strip 21 clamp the curtain 13 with appropriate force, ensuring that the sponge strip 21 is in close contact with the curtain 13 while not hindering the movement of the curtain 13 due to excessive friction. When the unfolded curtain 13 needs to be stored, start the motor 15 to make the winding roller 17 rotate, thereby gradually winding the curtain 13 on the winding roller 17. During the movement of the curtain 13, the sponge strip 21 closely wipes across the surface of the curtain 13, thereby wiping off the dust on the surface of the curtain 13, and thus automatically completing the cleaning treatment of the curtain 13 during the winding process of the curtain 13.
[0023] The above is only the specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any change or replacement that can be thought of without creative work should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope defined by the claims.
Claims
1. A cleanable projection screen, characterized in that: It includes a casing, a storage cavity is provided in the casing, a winding roller is rotatably arranged in the storage cavity, a strip groove is provided on the bottom wall of the storage cavity, a curtain is provided on the winding roller, the curtain passes through the strip groove, a counterweight beam is provided at one end of the strip groove, a cleaning groove is provided at the bottom of the casing, a squeezing roller is provided in the cleaning groove, a cleaning plate is provided on the front side of the squeezing roller, slots are provided on both sides of the cleaning groove, the cleaning plate is U-shaped, the two ends of the cleaning plate are respectively plugged into two slots, and a sponge strip is provided on one side surface of the cleaning plate.
2. A cleanable projection screen according to claim 1, characterized in that: Slide grooves are arranged on both side walls of the cleaning groove, slide rods are arranged in the two slide grooves, sliders are slidably arranged on the slide rods, springs are arranged between the sliders and the inner wall of the slide grooves, and the squeezing roller is rotatably arranged between the two sliders.
3. A cleanable projection screen according to claim 1, characterized in that: Magnetic plates are arranged on both side walls of the slot, and the magnetic plates are fitted with the ends of the cleaning plates.
4. The cleanable projection screen according to claim 1, characterized in that: A layer of double-sided adhesive is arranged on one side surface of the sponge strip, and the double-sided adhesive layer of the sponge strip is attached to the cleaning plate.
5. The cleanable projection screen according to claim 1, characterized in that: A motor is arranged on one side of the casing, and an output shaft of the motor is connected to the winding roller.