CN209167805U - A projection screen for network teaching - Google Patents

Abstract

The utility model belongs to the technical field of network teaching, and discloses a projection screen for network teaching. A connecting block is sleeved on the rod, a screen is installed on the bottom of the connecting block, a counterweight is installed on the bottom of the screen, a controller is installed on one side of the casing, and the motor is electrically connected with the controller. One side of the casing relative to the controller is rotatably connected with two adjustment rods through a damping shaft, and a support column is sleeved on the two adjustment rods, and a fixing button is installed on one side of the two adjustment rods. The utility model is provided with a base plate, an adjusting rod, a fixing button, a supporting column, a fixing hole, a foot and a concave hole, which is convenient for use in different positions, and can be used on the ground without carrying other structures. higher range.

Description

A projection screen for network teaching

technical field

The utility model belongs to the technical field of network teaching, in particular to a projection screen for network teaching.

Background technique

Network teaching is the application of multimedia and network technology under the guidance of certain teaching theories and ideas, through multilateral and multi-directional interaction between teachers, students, and media, and the collection, transmission, processing, and sharing of teaching information from various media to achieve teaching goals. a teaching mode.

However, the current projection screens for network teaching on the market do not have structures that are convenient for use in different locations, and other structures need to be carried before they can be used on the ground. With regard to the overhaul structure, when the user needs to overhaul the device, the device needs to be completely disassembled for overhaul, which is more difficult to overhaul.

Utility model content

The purpose of the present utility model is to provide a projection screen for network teaching, so as to solve the problem that the use conditions of the device proposed in the above-mentioned background technology are relatively high, the use range of the device is reduced, and the device needs to be completely disassembled for maintenance, and the maintenance difficulty is relatively large. question.

In order to achieve the above purpose, the utility model provides the following technical solutions: a projection screen for network teaching, comprising a casing, a motor is fixedly connected to the inside of the casing by bolts, and a rotating rod is rotatably connected to one end of the motor, and the A connecting block is sleeved on the rotating rod, a screen is installed on the bottom of the connecting block, a counterweight block is installed on the bottom of the screen, a controller is installed on one side of the casing, and the motor is electrically connected with the controller One side of the casing relative to the controller is rotatably connected with two adjusting rods through the damping shaft, both of the two adjusting rods are sleeved with support columns, and one side of the two adjusting rods is installed with a fixing button, A fixing hole is opened on the side of the support column close to the fixing button, a foot is installed at one end of the support column, a base plate is installed under the counterweight block, and the top of the base plate is close to the two sides of the counterweight block. A card frame is installed on all of them, and a concave hole is opened at one side of the top of the base plate close to the card frame.

Preferably, a fixing frame is installed on both sides of the outer casing adjacent to the controller, a limiting frame is installed on one side of the fixing frame close to the outer casing, and a fixing pin penetrates between the limiting frame and the outer casing.

Preferably, there are two concave holes in total, and the diameters of the two concave holes are larger than the diameter of the foot.

Preferably, a pull ring is installed on the top of the fixing pin, and the inner wall of the pull ring is provided with a non-slip pad

Preferably, a handle is installed on the top of the casing, and an anti-slip groove is formed on the handle.

Compared with the prior art, the beneficial effects of the present utility model are:

(1) The utility model is provided with a base plate, an adjusting rod, a fixing button, a supporting column, a fixing hole, a foot and a concave hole, the base plate and the counterweight are separated, and the adjusting rod is rotated around the casing to an angle perpendicular to the ground, Press the fixing button and pull the support column. After the support column is moved to a suitable position, release the fixing button and insert the fixing button into the fixing hole to fix the adjusting rod and the supporting column. Insert the foot into the concave hole for snapping , so that the device can be used on the ground, which solves the problem that the device needs to be completely disassembled to be repaired, and the maintenance is difficult. It is easy to use in different locations, and can be used on the ground without carrying other structures. , the device has a higher range of use.

(2) The utility model is provided with a fixing pin, a limiting frame and a fixing frame. When the user needs to repair the device, he pulls out the fixing pin, separates the housing from the limiting frame, separates the fixing frame from the housing, and completes the disassembly of the device. , After the device is overhauled, connect the housing to the limit frame, insert the fixing pin to fix it, and complete the installation of the device, which solves the problem that the device needs to be completely disassembled for overhaul, which is difficult to overhaul, and is convenient for overhauling the device. When the user needs to repair the device, it can be repaired without completely disassembling the device, and the maintenance difficulty is low.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the internal structure diagram of the utility model;

Fig. 3 is the enlarged view of the area A of the utility model;

Fig. 4 is the rear view of the utility model;

Fig. 5 is the rear view of the utility model when used on the ground;

6 is a top view of the substrate of the present invention;

In the figure: 1-substrate; 2-card frame; 3-curtain; 4-fixed frame; 5-pull ring; 6-limit frame; 7-shell; 8-controller; 9-fixed pin; 10-counterweight block; 11-rotating rod; 12-connecting block; 13-motor; 14-anti-skid pad; 15-adjusting rod; 16-support column; 17-foot; 18-fixing hole; 19-fixing button; 20-concave hole ; 21- handle; 22- anti-skid groove.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Please refer to FIG. 1-FIG. 6, the present utility model provides the following technical solutions: a projection screen for network teaching, comprising a casing 7, the interior of the casing 7 is fixedly connected with a motor 13 by bolts, and the motor 13 is driven by RA-WK9 Motor, rated voltage 220V, rated power 120W, rated speed 1400rpm, one end of the motor 13 is rotatably connected with a rotating rod 11, a connecting block 12 is sleeved on the rotating rod 11, and the bottom of the connecting block 12 is installed with a curtain 3, and the bottom of the curtain 3 A counterweight 10 is installed, a controller 8 is installed on one side of the casing 7, and the controller 8 adopts an HST-42 controller with a rated voltage of 110-220V, a power of 0.004KW, a speed response frequency of 5KHZ, and the motor 13 and The controller 8 is electrically connected, and one side of the casing 7 relative to the controller 8 is rotatably connected with two adjusting rods 15 through the damping shaft. A fixing button 19 is installed on one side, a fixing hole 18 is opened on the side of the support column 16 close to the fixing button 19, a foot 17 is installed at one end of the support column 16, a base plate 1 is installed under the counterweight 10, and the top of the base plate 1 is installed The card frame 2 is installed on both sides close to the counterweight 10, and the top of the base plate 1 is provided with a concave hole 20 at one side of the base plate 1 close to the card frame 2. When the user needs to use the device on the ground, the base plate 1 and the card frame 2 are opened. The counterweight 10 is separated, the adjusting rod 15 is rotated around the casing 7 to an angle perpendicular to the ground, the fixing button 19 is pressed, and the support column 16 is pulled. The fixing button 19 is inserted into the fixing hole 18 to fix the adjusting rod 15 and the support column 16, and the foot 17 is inserted into the concave hole 20 for engagement, thereby fixing and supporting the device so that the device can be used on the ground.

In order to facilitate the maintenance of the device, in this embodiment, preferably, both sides of the housing 7 adjacent to the controller 8 are installed with a fixing frame 4, and a limiting frame 6 is installed on the side of the fixing frame 4 close to the housing 7, and the limiting frame 6 A fixing pin 9 runs through the housing 7. When the user needs to repair the device, he pulls out the fixing pin 9 to separate the housing 7 from the limit frame 6 to complete the disassembly of the device. After the device is repaired, the housing 7 and the limit The frame 6 is connected, and the fixing pin 9 is inserted for fixing, and the installation of the device is completed.

In order to facilitate the installation of the feet 17 , in this embodiment, preferably, two recessed holes 20 are provided in total, and the diameters of the two recessed holes 20 are both larger than the diameter of the feet 17 .

In order to facilitate pulling the fixing pin 9 , in this embodiment, preferably, a pull ring 5 is installed on the top of the fixing pin 9 , and an anti-skid pad 14 is provided on the inner wall of the pulling ring 5 .

In order to facilitate the carrying of the casing 7 , in this embodiment, preferably, a handle 21 is installed on the top of the casing 7 , and an anti-skid groove 22 is formed on the handle 21 .

The working principle and use process of the utility model: when the utility model is in use, when the user needs to use the device on the ground, the base plate 1 is separated from the counterweight block 10, and the adjusting rod 15 is rotated around the casing 7 to be perpendicular to the ground. The angle of the fixing button 19 is pressed, and the support column 16 is pulled. After the support column 16 is moved to an appropriate position, the fixing button 19 is released, and the fixing button 19 is inserted into the fixing hole 18, thereby fixing the adjustment rod 15 and the support column 16. , insert the foot 17 into the concave hole 20 to engage, so as to fix and support the device, so that the device can be used on the ground. When it needs to be used on the wall, the fixing frame 4 is fixed with the wall by bolts, and the The casing 7 is connected with the limit frame 6, and the fixing pin 9 is inserted for fixing, and the installation of the device is completed. When the user needs to use the curtain 3, the motor 13 is activated by the controller 8, and the rotation of the motor 13 drives the rotating rod 11 to rotate, and the rotating rod 11. The rotation drives the connecting block 12 to rotate, and the connecting block 12 rotates to drive the curtain 3 to unfold. When the user needs to repair the device, he pulls out the fixing pin 9, separates the housing 7 from the limit frame 6, and completes the disassembly of the device. Easy maintenance.

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (5)

1. the inside of a kind of Web-based instruction projection curtain, including shell (7), the shell (7) is bolted to connection Have motor (13), one end of the motor (13) is rotatably connected to bull stick (11), is arranged with link block on the bull stick (11) (12), the bottom of the link block (12) is equipped with curtain (3), and the bottom of the curtain (3) is equipped with clump weight (10), described The side of shell (7) is equipped with controller (8), and the motor (13) and controller (8) are electrically connected, it is characterised in that: described Shell (7) relative to controller (8) side by Damping rotation shaft rotation connection there are two adjusting rod (15), two adjustings It is arranged on bar (15) support column (16), and the side of two adjusting rods (15) is mounted on fixing button (19), the support Column (16) offers fixation hole (18) close to the side of fixing button (19), and one end of the support column (16) is equipped with footing (17), it is equipped with substrate (1) below the clump weight (10), close to the two sides position of clump weight (10) at the top of the substrate (1) The place of setting is mounted on card frame (2), and offers shrinkage pool (20) at a side position of card frame (2) at the top of substrate (1).

2. a kind of Web-based instruction projection curtain according to claim 1, it is characterised in that: the shell (7) is adjacent It is mounted on fixed frame (4) in the two sides of controller (8), the fixed frame (4) is equipped with limitting casing close to the side of shell (7) (6), running through between the limitting casing (6) and shell (7) has fixed pin (9).

3. a kind of Web-based instruction projection curtain according to claim 1, it is characterised in that: the shrinkage pool (20) sets altogether There are two setting, and the diameter of two shrinkage pools (20) is all larger than the diameter of footing (17).

4. a kind of Web-based instruction projection curtain according to claim 2, it is characterised in that: the fixed pin (9) Top is equipped with pull ring (5), and the inner wall of the pull ring (5) is provided with non-slip mat (14).

5. a kind of Web-based instruction projection curtain according to claim 1, it is characterised in that: the top of the shell (7) Portion is equipped with handle (21), offers non-slip groove (22) on the handle (21).