CN211653916U - Projection teaching aid with mobile picture for teaching - Google Patents

Abstract

The utility model relates to the technical field of teaching appliances; It is fixed in the rotating wheel, the lower side of the right rotating wheel is provided with a motor, the output shaft of the motor is fixedly connected with the lower end of the right rotating rod, and the upper ends of the left and right rotating rods are respectively inserted into the lower surface of the cover plate In the round hole on the top, an illumination lamp is arranged on the rear side of the lower side of the cover plate, and the four corners of the lower surface of the illumination lamp are fixed with support rods. There is a glass sheet in front of the illumination lamp. The glass sheet is embedded in the opening of the front side wall of the box. The content that needs to be explained is written on the roll-shaped transparent cloth. When in use, a flowing picture can be formed. When the machine is used, there is no need to replace the paper sheet, which saves time and effort, and improves the efficiency of teaching. The utility model has the advantages of reasonable setting and low production cost.

Description

Projection aids for teaching with moving pictures

technical field

The utility model relates to the technical field of teaching appliances, in particular to a projection teaching aid for teaching with a moving picture.

Background technique

Multimedia teaching refers to the rational selection and use of modern teaching media through teaching design according to the characteristics of teaching objectives and teaching objects in the teaching process, and the organic combination with traditional teaching methods to jointly participate in the whole process of teaching, and use a variety of media information to act on the teaching process. Students, form a reasonable teaching process structure and achieve the optimal teaching effect. In the process of multimedia teaching, the projection device is an extremely important projection device, but the existing projection device can only display the content on the prepared paper. For projection, when it is necessary to explain, it is time-consuming and laborious to constantly replace the paper, which needs to be improved urgently.

Utility model content

The purpose of the utility model is to aim at the defects and deficiencies of the prior art, to provide a kind of projection teaching aid for teaching with a moving picture with a reasonable design and convenient use, and the content to be explained is written on the roll-shaped transparent cloth, and when in use , which can form a flowing picture. When explaining, there is no need to replace the paper, saving time and effort, and improving the efficiency of teaching.

In order to achieve the above purpose, the technical scheme adopted by the present utility model is as follows: it comprises a box body, a cover plate and a partition plate, the box body is an upper open structure, the upper side of the box body is provided with a cover plate, and the rear side of the cover plate is provided with a cover plate. The hinge is screwed to the upper side of the rear side wall of the box body, the front side of the cover plate is connected to the upper side of the front side wall of the box body through a cross lock, and the center of the box body is provided with a partition; it also includes a rotating rod, The motor, the rotating wheel, the illuminating lamp and the glass sheet, the left and right sides of the front side of the partition are screwed with rotating rods through bearings. The rotating wheel is connected by a transmission belt, the lower side of the right rotating wheel is provided with a motor, the motor is connected to the external power supply, the output shaft of the motor is fixedly connected with the lower end of the right rotating rod, and the upper ends of the left and right rotating rods are respectively It is inserted into the circular hole on the lower surface of the cover plate. The rear side of the lower side of the cover plate is provided with an illumination lamp. The four corners of the lower surface of the illumination lamp are fixed with support rods, and the lower end of the support rod is fixed on the placement plate. The placing plate is arranged on the partition plate, and a glass sheet is arranged in front of the irradiation lamp, and the glass sheet is embedded in the opening of the front side wall of the box body.

Further, a limiting piece is fixed on one side of the outer ring wall of the rotating rod, and the limiting piece is suspended above the partition plate.

Further, a turntable is sleeved and fixed on the lower end of the rotating rod, and the turntable is arranged on the upper side of the partition plate.

Further, the lower left side of the box body is provided with a door body, the right side of the door body is screwed to the right side of the front side wall of the box body through a hinge, and the left side of the door body is connected to the left side of the box body through a cross lock. Side wall connection.

Further, limit rods are equidistantly fixed on the lower surface of the placing plate, the lower ends of the limit rods are inserted into the grooves on the fixing plate, and sliders are fixed on the left and right sides of the lower surface of the fixing plate, Slide rails are slidably arranged in the sliders. The slide rails are fixed on the upper surface of the partition plate. The upper side of the center of the partition plate is provided with a screw rod. The front end of the screw rod is screwed to the front side wall of the box through a bearing. After the rear end of the rod passes through the rear side wall of the box body, it is fixedly connected with the crank handle, and the nut on the screw rod is fixedly connected with the lower surface of the fixing plate.

Further, the support rod is composed of an insertion rod and a sleeve, the upper end of the insertion rod is fixed on the lower surface of the illuminating lamp, the lower end of the insertion rod is inserted into the sleeve, and is fixed by bolts, and the lower end of the sleeve is fixed on the lower surface of the illuminating lamp. placed on the top surface of the plate.

After the above-mentioned structure is adopted, the beneficial effect of the present invention is: the teaching aids for teaching with a moving picture according to the present invention can write the content that needs to be explained on the roll-shaped transparent cloth, and can form a flowing transparent cloth during use. When explaining the picture, there is no need to replace paper sheets, which saves time and effort, and improves the efficiency of teaching. The utility model has the advantages of reasonable setting and low production cost.

Description of drawings

Figure 1 is a schematic structural diagram of the utility model.

FIG. 2 is a top view of FIG. 1 .

FIG. 3 is a cross-sectional view A-A in FIG. 2 .

FIG. 4 is a B-B sectional view in FIG. 2 .

FIG. 5 is an enlarged view of part C in FIG. 4 .

FIG. 6 is a schematic structural diagram of a placing plate in the present invention.

Description of reference numbers:

Box 1, cover plate 2, partition plate 3, rotating rod 4, motor 5, rotating wheel 6, illumination lamp 7, glass sheet 8, support rod 9, insertion rod 9-1, sleeve 9-2, placing plate 10 , Limit piece 11 , turntable 12 , door 13 , limit rod 14 , fixed plate 15 , slider 16 , slide rail 17 , screw 18 , rocker 19 .

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.

As shown in FIG. 1-FIG. 6, this specific embodiment adopts the following technical solution: it includes a box body 1, a cover plate 2 and a partition plate 3, the box body 1 is an upper open structure, and the upper side of the box body 1 is provided with Cover plate 2, the rear side of the cover plate 2 is screwed to the upper side of the rear side wall of the box body 1 through a hinge, and the lower side of the hinge is fixed on the upper side of the rear side wall of the box body 1 by bolts. The upper side is fixed on the rear side wall of the cover plate 2 by bolts. The front side of the cover plate 2 is connected to the upper side of the front side wall of the box body 1 through a cross lock. The center of the box body 1 is provided with a partition plate 3. The outer periphery of 3 is welded and fixed with the inner side wall of the box body 1. The lower left side of the box body 1 is provided with a door body 13. The right side of the hinge is fixedly connected to the right side of the front side wall of the box body 1 through bolts, the left side of the hinge is fixedly connected to the right side wall of the door body 13 through bolts, and the left side of the door body 13 is connected to the box through a cross lock. The left side wall of the body 1 is connected, the cross lock is embedded in the left side of the door body 13, and the lock cylinder of the cross lock is embedded in the left side wall of the box body 1; it also includes a rotating rod 4, a motor 5, a rotating The wheel 6, the illumination lamp 7 and the glass sheet 8, the left and right sides of the front side of the partition plate 3 are screwed with the rotating rod 4 through the bearing, the bearing is embedded in the partition plate 3, and its outer ring and the inner side of the partition plate 3 The wall is welded and fixed, and its inner ring is welded and fixed with the rotating rod 4. After the lower end of the rotating rod 4 passes through the partition 3, it is respectively inserted and welded in the rotating wheel 6. The rotating wheels 6 on both sides are connected by a transmission belt. The lower side of the rotating wheel 6 is provided with a motor 5, which is connected to an external power supply. The model of the motor 5 is 40KTYZ. The output shaft of the motor 5 is fixed by welding with the lower end of the right rotating rod The upper ends of 4 are respectively inserted into the circular holes on the lower surface of the cover plate 2, and the right side of the outer ring wall of the rotating rod 4 is welded and fixed with a limit piece 11. The limit piece 11 is suspended above the partition plate 3 and can be The inner wall of the reel is limited to prevent slippage during the rotation. The lower end of the rotating rod 4 is welded and fixed with a turntable 12. The turntable 12 is arranged on the upper side of the partition 3 and can support the reel. The rear side of the lower side of the plate 2 is provided with an illumination lamp 7, and the four corners of the lower surface of the illumination lamp 7 are welded and fixed with a support rod 9, and the support rod 9 is composed of a plug-in rod 9-1 and a sleeve 9-2. The upper end of 9-1 is welded and fixed on the lower surface of the illuminating lamp 7, the lower end of the insertion rod 9-1 is inserted into the sleeve 9-2, and is fixed by bolts, and the lower end of the sleeve 9-2 is welded and fixed on the placing plate. On the upper surface of 10, the height of the support rod 9 can be adjusted according to the height of the reel, the placing plate 10 is arranged on the partition 3, and the lower surface of the placing plate 10 is equidistantly welded and fixed with several limit rods 14. The lower end of the rod 14 is inserted into the groove on the fixing plate 15 , the left and right sides of the lower surface of the fixing plate 15 are welded and fixed with the slider 16 , and the slider 16 is slidably provided with a slide rail 17 , and the slide rail 17 passes through the bolts. It is fixed on the upper surface of the partition plate 3. The upper side of the center of the partition plate 3 is provided with a screw rod 18. The front end of the screw rod 18 is screwed to the front side wall of the box body 1 through a bearing, and the bearing is embedded in the box body 1. inside the front side wall of , and its outer ring and the front side of the box The inner side wall of the screw rod 18 is welded and fixed, and its inner ring is welded and fixed with the front end of the screw rod 18. After the rear end of the screw rod 18 passes through the rear side wall of the box body 1, it is welded and fixed with the rocker 19. The screw nut on the screw rod 18 is The lower surface of the fixing plate 15 is welded and fixed. The fixing plate 15 can be moved back and forth by rotating the screw rod 18. The position of the illumination lamp 7 can be adjusted according to the size of the curtain, and then the size of the picture on the curtain can be adjusted. The illumination lamp 7 is set directly in front of There is a glass sheet 8 embedded in the opening of the front side wall of the box body 1 .

The working principle of this specific embodiment: when in use, the box body 1 is supported on the back side of the classroom through the support frame, when in use, the roll-shaped transparent cloth with the content written on it is wound on the left rotating rod 4, and the scroll The groove on one side is sleeved on the limit piece 11, the lower end of the reel is in contact with the turntable 12, and then the empty reel is sleeved on the right rotating rod 4, and the groove on one side of the reel is sleeved on the limiter as above. On the position film 11, when it is necessary to project, first turn on the illumination lamp 7, then put the end of the roll cloth on the right reel, and then start the motor 5, the motor 5 drives the right rotating rod 4 to rotate, and the right rotating rod 4 rotates. The rod 4 drives the rotating wheel 6 on the right side and the reel on the right side to rotate, the rotating wheel 6 drives the rotating wheel 6 on the left side to rotate through the transmission belt, the rotating wheel 6 on the left side drives the rotating rod 4 on the left side to rotate, and the rotating rod on the left side rotates. 4. Drive the roll cloth on the upper side to rotate, and while rotating, the transparent cloth can be wound to the right reel. During the process of winding to the right reel, the content of the roll cloth can be projected on the On the curtain on the front side of the classroom, if the curtain is large, the crank handle 19 can be rotated, the crank handle 19 drives the screw rod 18 to rotate, the screw rod 18 drives the fixed plate 15 to move to the rear side through the screw nut, and the fixed plate 15 drives the placement plate. 10 moves to the rear side, and the placing plate 10 drives the illumination lamp 7 to move to the rear side through the support rod 9, thereby increasing the projected area. After use, the roll cloth can be removed, and the door body 13 can be opened to store the roll cloth. to the inside of box 1 for next use.

After adopting the above-mentioned structure, the beneficial effects of this specific embodiment are as follows:

1. Write the content that needs to be explained on the roll-shaped transparent cloth. When in use, it can form a flowing picture. When explaining, there is no need to replace the paper, saving time and effort, and improving the efficiency of teaching;

2. The placing plate 10 on the lower side of the illumination lamp 7 is inserted on the fixing plate 15 through the limit rod 14. The fixing plate 15 can be moved back and forth by rotating the screw rod 18, and the position of the illumination lamp 7 can be adjusted according to the size of the curtain. Then adjust the size of the picture on the screen.

Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Within the spirit and principle of the present utility model, any modifications, equivalent replacements, improvements, etc. made shall be included within the protection scope of the present utility model.

Claims (6)

1. The projection teaching aid with the flowing picture for teaching comprises a box body (1), a cover plate (2) and a partition plate (3), wherein the box body (1) is of an upper opening type structure, the cover plate (2) is arranged on the upper side of the box body (1), the rear side of the cover plate (2) is screwed with the upper side of the rear side wall of the box body (1) through a hinge, the front side of the cover plate (2) is connected with the upper side of the front side wall of the box body (1) through a cross lock, and the partition plate (3) is arranged at the center inside the box body (1); the method is characterized in that: the glass plate rack is characterized by further comprising rotating rods (4), motors (5), rotating wheels (6), lamps (7) and glass sheets (8), wherein the rotating rods (4) are rotatably connected to the left side and the right side of the front side of the partition plate (3) through bearings, the lower ends of the rotating rods (4) penetrate through the partition plate (3) and are respectively inserted and fixed in the rotating wheels (6), the rotating wheels (6) on the two sides are connected through a transmission belt, the motors (5) are arranged on the lower sides of the rotating wheels (6) on the right side, the motors (5) are connected with an external power supply, the output shafts of the motors (5) are fixedly connected with the lower ends of the rotating rods (4) on the right side, the upper ends of the rotating rods (4) on the left side and the right side are respectively inserted in round holes in the lower surface of the cover plate (2), the lamps (7) are arranged on the rear side of the lower side of the cover plate (2), supporting rods (9) are fixed at four, the placing plate (10) is arranged on the partition plate (3), a glass sheet (8) is arranged right in front of the irradiation lamp (7), and the glass sheet (8) is embedded in an opening of the front side wall of the box body (1).

2. A teaching aid with a floating picture for teaching according to claim 1, wherein: one side of the outer ring wall of the rotating rod (4) is fixed with a limiting sheet (11), and the limiting sheet (11) is suspended above the partition plate (3).

3. A teaching aid with a floating picture for teaching according to claim 1, wherein: the lower end of the rotating rod (4) is sleeved with a rotary table (12), and the rotary table (12) is arranged on the upper side of the partition plate (3).

4. A teaching aid with a floating picture for teaching according to claim 1, wherein: the left lower side of the box body (1) is provided with a door body (13), the right side of the door body (13) is connected with the right side of the front side wall of the box body (1) in a screwing mode through a hinge, and the left side of the door body (13) is connected with the left side wall of the box body (1) through a cross lock.

5. A teaching aid with a floating picture for teaching according to claim 1, wherein: the lower surface of the placing plate (10) is fixed with limiting rods (14) at equal intervals, the lower ends of the limiting rods (14) are inserted into grooves formed in the fixing plate (15), sliding blocks (16) are fixed on the left side and the right side of the lower surface of the fixing plate (15), sliding rails (17) are arranged in the sliding blocks (16) in a sliding mode, the sliding rails (17) are fixed on the upper surface of the partition plate (3), a screw rod (18) is arranged on the upper side of the center of the partition plate (3), the front end of the screw rod (18) is connected with the front side wall of the box body (1) through a bearing in a rotating mode, the rear end of the screw rod (18) penetrates through the rear side wall of the box body (1) and is fixedly connected with a rocking handle (19), and a screw nut on the screw rod.

6. A teaching aid with a floating picture for teaching according to claim 1, wherein: the support rod (9) is composed of an insert rod (9-1) and a sleeve (9-2), the upper end of the insert rod (9-1) is fixed on the lower surface of the irradiation lamp (7), the lower end of the insert rod (9-1) is inserted into the sleeve (9-2) and fixed through a bolt, and the lower end of the sleeve (9-2) is fixed on the upper surface of the placing plate (10).

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