Orthographic projection screen

Abstract

The utility model discloses an orthographic projection screen, specifically relates to projection equipment technical field, including driving seat and support seat, the outer top surface of driving seat is fixedly equipped with a first motor, the one side of driving seat outer surface is equipped with a cleaning frame, the both sides of cleaning frame interior are both movably equipped with threaded rod, and the threaded rod is equipped with a second motor. Sliding rods are fixedly mounted on the two sides of the interior of the cleaning frame correspondingly, and the outer surfaces of the two threaded rods are in threaded connection with brush plates correspondingly. According to the orthographic projection screen, in actual work, the first motor drives the rotating shaft to rotate, so that the orthographic projection screen can be wound on the outer surface of the winding drum, the second motor drives one belt pulley to rotate, the two belt pulleys can drive the two threaded rods to rotate in cooperation with the belt, and the two threaded rods can rotate along with rotation of the threaded rods, so that the orthographic projection screen can be wound on the outer surface of the winding drum. And the brush plate can be lifted to clean the orthographic projection curtain in the winding process, so that dust or impurities attached to the surface of the orthographic projection curtain can be conveniently cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of projection equipment, in particular to a front projection screen. Background Art

[0002] With the development of projection technology, projectors and their matching projection screens have been widely used in homes and society. By projecting images on the projection screen through the projector, meeting presentations can be made without writing on the blackboard, which facilitates daily meetings.

[0003] After searching, for example, the utility model with application number 201821587230.2 discloses a projection screen, including: a pair of parallel supporting rods with a supporting seat at the bottom; a display screen, a pair of wide sides are respectively wrapped around the pair of supporting rods, and the display screen has an expanded position in which the display screen can be expanded to a predetermined length along the long side direction under the action of an external force, and a folded position in which the display screen is completely wrapped around the pair of supporting rods. During the use of the screen, the surface of the screen is easily contaminated with external dust or impurities. When a lot of dust or impurities accumulate, it will affect the viewing experience. The utility model is not convenient for cleaning the impurities or dust attached to the screen. Therefore, in order to solve the above defects, the inventor proposes a front projection screen. Utility Model Content

[0004] The main purpose of the utility model is to provide a front projection screen, which can effectively solve the problem of inconvenience in cleaning impurities or dust attached to the screen.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A front projection screen comprises a driving seat and a supporting seat, wherein a first motor is fixedly mounted on the outer top surface of the driving seat, a cleaning frame is arranged on one side of the outer surface of the driving seat, two tensioning rods are arranged between the driving seat and the supporting seat, a rotating shaft is movably mounted inside the driving seat, and an output end of the first motor is fixedly connected to the rotating shaft, a winding drum is fixedly mounted on the outer surface of the rotating shaft, a front projection screen is arranged on the outer surface of the winding drum, and the front projection screen comprises a light shielding layer;

[0007] Threaded rods are movably mounted on both sides of the interior of the cleaning frame, and sliding rods are fixedly mounted on both sides of the interior of the cleaning frame, brush plates are threadedly connected to the outer surfaces of the two threaded rods, and the two brush plates are movably connected to the two sliding rods respectively, pulleys are fixedly mounted on the top surfaces of the two threaded rods, and belts are commonly arranged on the outer surfaces of the two pulleys, a second motor is fixedly mounted on the outer top surface of the cleaning frame, and an output end of the second motor is fixedly connected to one of the pulleys;

[0008] Insert blocks are fixedly installed on both sides of the interior of the cleaning frame, a fixing hole is provided on the outer top surface of the cleaning frame, a mounting block is fixedly installed on one side of the outer surface of the driving seat, slots are provided on both sides of the outer surface of the mounting block, and a connecting hole is provided on the top surface of the mounting block.

[0009] Preferably, a base fabric layer is fixedly mounted on one side of the shading layer, a PVC layer is fixedly mounted on one side of the base fabric layer, and a reflective layer is fixedly mounted on one side of the PVC layer.

[0010] Preferably, the size of the connecting hole is the same as the size of the fixing hole.

[0011] Preferably, one end of the orthographic projection screen away from the winding drum is fixedly connected to the support seat.

[0012] Preferably, two mounting grooves are provided on one side of the driving seat opposite to the supporting seat, and a plurality of cotton cloth hanging rings are fixedly installed on both sides of the orthographic projection screen.

[0013] Preferably, a plurality of hooks are fixedly mounted on one side of the two tensioning rods, and the size of the two tensioning rods is the same as the size of the mounting grooves.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model discloses a front projection screen. By arranging a cleaning frame, in actual work, a first motor drives a rotating shaft to rotate, so that the front projection screen cloth can be wound around the outer surface of a winding drum, and a second motor drives one of the pulleys to rotate, and in cooperation with a belt, the two pulleys can drive two threaded rods to rotate. With the rotation of the threaded rods, the brush plate can be raised and lowered to clean the front projection screen cloth in the winding process, thereby facilitating the cleaning of dust or impurities attached to the surface of the front projection screen cloth. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the cleaning frame structure of the utility model;

[0018] Figure 3 It is a cross-sectional schematic diagram of the drive seat of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the orthographic projection screen of the utility model;

[0020] Figure 5 This is a schematic diagram of the tension rod structure of the utility model.

[0021] In the figure: 1. driving seat; 2. supporting seat; 3. first motor; 4. tensioning rod; 5. cleaning frame; 501. threaded rod; 502. sliding rod; 503. brush plate; 504. pulley; 505. belt; 506. plug block; 507. fixing hole; 508. second motor; 101. rotating shaft; 102. winding drum; 103. orthographic projection screen; 104. mounting block; 105. connecting hole; 106. slot; 1031. shading layer; 1032. base fabric layer; 1033. PVC layer; 1034. reflecting layer; 1035. cotton cloth hanging ring; 201. mounting groove; 401. hook. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] The utility model discloses a front projection screen, such as Figure 1-5 As shown, it includes a driving seat 1 and a supporting seat 2. A first motor 3 is fixedly mounted on the outer top surface of the driving seat 1. A cleaning frame 5 is provided on one side of the outer surface of the driving seat 1. Two tensioning rods 4 are provided between the driving seat 1 and the supporting seat 2.

[0024] A rotating shaft 101 is movably installed inside the driving seat 1, and the output end of the first motor 3 is fixedly connected to the rotating shaft 101. The first motor 3 can drive the rotating shaft 101 to rotate. A winding drum 102 is fixedly installed on the outer surface of the rotating shaft 101. When the rotating shaft 101 rotates, the winding drum 102 can be driven to rotate. The outer surface of the winding drum 102 is provided with an orthographic projection screen 103. As the winding drum 102 rotates, the orthographic projection screen 103 can be wound around the outer surface of the winding drum 102. At the same time, when the winding drum 102 rotates, the orthographic projection screen 103 can also be unfolded.

[0025] Threaded rods 501 are movably installed on both sides of the interior of the cleaning frame 5, and sliding rods 502 are fixedly installed on both sides of the interior of the cleaning frame 5. The outer surfaces of the two threaded rods 501 are threadedly connected with brush plates 503, and the two brush plates 503 are movably connected to the two sliding rods 502 respectively. When the threaded rods 501 rotate, the brush plates 503 can be driven to rise and fall, and the sliding rods 502 can prevent the brush plates 503 from rotating with the rotation of the threaded rods 501, and the raised and lowered brush plates 503 can clean the dust or impurities attached to the surface of the projection screen 103.

[0026] Pulleys 504 are fixedly installed on the top surfaces of the two threaded rods 501, and the outer surfaces of the two pulleys 504 are jointly provided with belts 505. A second motor 508 is fixedly installed on the outer top surface of the cleaning frame 5, and the output end of the second motor 508 is fixedly connected to one of the pulleys 504. When the second motor 508 drives one of the pulleys 504 to rotate, the other pulley 504 can be driven to rotate through the belt 505, so that the two pulleys 504 can drive the two threaded rods 501 to rotate.

[0027] Insert blocks 506 are fixedly installed on both sides of the interior of the cleaning frame 5, and a fixing hole 507 is provided on the outer top surface of the cleaning frame 5. A mounting block 104 is fixedly installed on one side of the outer surface of the driving seat 1. Slots 106 are provided on both sides of the outer surface of the mounting block 104, and a connecting hole 105 is provided on the top surface of the mounting block 104. When the insert block 506 is inserted into the slot 106, the fixing hole 507 can coincide with the connecting hole 105, and then the bolt is inserted to connect the cleaning frame 5 to the mounting block 104, thereby facilitating the disassembly of the cleaning frame 5 to facilitate the cleaning of the brush plate 503.

[0028] The orthographic projection screen 103 includes a shading layer 1031, the material of the shading layer 1031 is polyolefin, a base fabric layer 1032 is fixedly installed on one side of the shading layer 1031, the base fabric layer 1032 is interwoven with cotton yarn and glass fiber, and can make the orthographic projection screen 103 have the characteristics of no curling, etc., a PVC layer 1033 is fixedly installed on one side of the base fabric layer 1032, and a reflective layer 1034 is fixedly installed on one side of the PVC layer 1033, and the material of the reflective layer 1034 is titanium dioxide or hollow glass beads.

[0029] One end of the projection screen 103 away from the winding drum 102 is fixedly connected to the support seat 2, and two mounting grooves 201 are provided on the side opposite to the driving seat 1 and the support seat 2. A plurality of cotton cloth hanging rings 1035 are fixedly installed on both sides of the projection screen 103. The material of the hanging rings is made of existing cotton cloth. A plurality of hooks 401 are fixedly installed on one side of the two tensioning rods 4. When the projection screen 103 is unfolded, the cotton cloth hanging rings 1035 can be hung in the hooks 401 to tension the two sides of the projection screen 103.

[0030] The working principle of the utility model is as follows: when it is needed, the user first starts the first motor 3 to drive the rotating shaft 101 to rotate, and moves the supporting seat 2 to unfold the front projection screen 103. When the front projection screen 103 is unfolded, the two tensioning rods 4 can be inserted into the mounting groove 201, and then the cotton cloth hanging ring 1035 can be hung in the hook 401 to tighten the two sides of the front projection screen 103 so that it can be viewed. When the front projection screen 103 needs to be rolled up, the cotton cloth hanging ring 1035 hung in the hook 401 is first removed in turn, and then the tensioning rod 4 is removed, and the first motor 3 can be started again. Motor 3, the user moves the support base 2 as the winding drum 102 rotates, so that the orthographic projection screen 103 is wound around the outer surface of the winding drum 102. During this process, the first motor 3 drives the rotating shaft 101 to rotate, so that the orthographic projection screen 103 is wound around the outer surface of the winding drum 102, and the second motor 508 drives one of the pulleys 504 to rotate, and cooperates with the belt 505, so that the two pulleys 504 can drive the two threaded rods 501 to rotate. As the threaded rods 501 rotate, the brush plate 503 can be raised and lowered to clean the orthographic projection screen 103 during the winding process.

[0031] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A front projection screen, comprising a drive seat (1) and a support seat (2), characterized in that: A first motor (3) is fixedly mounted on the outer top surface of the drive seat (1); a cleaning frame (5) is provided on one side of the outer surface of the drive seat (1); two tensioning rods (4) are provided between the drive seat (1) and the support seat (2); a rotating shaft (101) is movably mounted inside the drive seat (1); an output end of the first motor (3) is fixedly connected to the rotating shaft (101); a winding drum (102) is fixedly mounted on the outer surface of the rotating shaft (101); a front projection screen (103) is provided on the outer surface of the winding drum (102); and the front projection screen (103) comprises a light shielding layer (1031); Threaded rods (501) are movably mounted on both sides of the interior of the cleaning frame (5), and sliding rods (502) are fixedly mounted on both sides of the interior of the cleaning frame (5), brush plates (503) are threadedly connected to the outer surfaces of the two threaded rods (501), and the two brush plates (503) are movably connected to the two sliding rods (502) respectively, pulleys (504) are fixedly mounted on the top surfaces of the two threaded rods (501), and the outer surfaces of the two pulleys (504) are jointly provided with a belt (505), a second motor (508) is fixedly mounted on the outer top surface of the cleaning frame (5), and an output end of the second motor (508) is fixedly connected to one of the pulleys (504); Insert blocks (506) are fixedly mounted on both sides of the interior of the cleaning frame (5), a fixing hole (507) is provided on the outer top surface of the cleaning frame (5), a mounting block (104) is fixedly mounted on one side of the outer surface of the drive seat (1), slots (106) are provided on both sides of the outer surface of the mounting block (104), and a connection hole (105) is provided on the top surface of the mounting block (104).

2. A front projection screen according to claim 1, characterized in that: A base fabric layer (1032) is fixedly mounted on one side of the light shielding layer (1031), a PVC layer (1033) is fixedly mounted on one side of the base fabric layer (1032), and a reflective layer (1034) is fixedly mounted on one side of the PVC layer (1033).

3. A front projection screen according to claim 1, characterized in that: The size of the connecting hole (105) is the same as the size of the fixing hole (507).

4. A front projection screen according to claim 1, characterized in that: One end of the orthographic projection screen (103) away from the winding drum (102) is fixedly connected to the support base (2).

5. A front projection screen according to claim 1, characterized in that: Two mounting grooves (201) are provided on one side of the driving seat (1) opposite to the supporting seat (2), and a plurality of cotton cloth hanging rings (1035) are fixedly mounted on both sides of the orthographic projection screen (103).

6. A front projection screen according to claim 5, characterized in that: A plurality of hooks (401) are fixedly mounted on one side of the two tensioning rods (4), and the dimensions of the two tensioning rods (4) are the same as the dimensions of the mounting slots (201).

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