CN213876287U

CN213876287U - Projection equipment for multimedia classroom teaching

Info

Publication number: CN213876287U
Application number: CN202120212841.4U
Authority: CN
Inventors: 林月萍; 郭德芳; 王青珍
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-26
Filing date: 2021-01-26
Publication date: 2021-08-03
Anticipated expiration: 2031-01-26

Abstract

The utility model relates to the technical field of teaching equipment, and discloses a projection device for multimedia classroom teaching, which comprises a case, a hollow movable block is fixedly arranged between two connecting blocks, the inner surfaces of two concave fixed blocks are both rotatably provided with a dust removal rubber roll through a fixed shaft, the output end of the motor is fixedly provided with a rotating shaft through a speed reducer, the outer surface of the rotating shaft is fixedly provided with a centrifugal disc, this a projection equipment for multimedia classroom teaching, through motor cooperation rotation axis, centrifugal disc and hollow movable block drive the reciprocal lateral shifting of connecting block, the connecting block drives the dust removal rubber roll through concave type fixed block and clears away the dust on filter screen surface at reciprocal lateral shifting in-process, realized removing dust to equipment's effect, avoided the more radiating problem of equipment of influence of dust, can prevent effectively that the dust from getting into equipment inside to cause the influence to components and parts.

Description

Projection equipment for multimedia classroom teaching

Technical Field

The utility model relates to a teaching equipment technical field specifically is a projection equipment for multimedia classroom teaching.

Background

The projection equipment is equipment capable of projecting images or videos onto a curtain, can be connected with a computer through different interfaces to play corresponding video signals, is widely applied to families, offices, schools and entertainment places, and has different types such as CRT, LCD, DLP and the like according to different working modes.

The projection equipment who is used for multimedia classroom teaching now is when using, and dust removal effect is not good, and inside the dust enters into equipment through the ventilation hole easily, causes the influence to the inside components and parts of equipment, and is unfavorable for the heat dissipation of equipment.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a projection equipment for multimedia classroom teaching possesses and to remove dust to equipment, has avoided the heat dissipation of the more influence equipment of dust accumulation, has effectively prevented that dust from getting into inside leading to the fact advantages such as influence to components and parts of equipment, and it is not good to have solved projection equipment dust removal effect, and inside the dust enters into equipment through the ventilation hole easily, causes the influence to the inside components and parts of equipment, and is unfavorable for the radiating problem of equipment.

(II) technical scheme

In order to solve the technical problem, the utility model provides a following technical scheme: a projection device for multimedia classroom teaching comprises a case, wherein fixed blocks are fixedly arranged on two sides of the back surface of an inner cavity of the case, connecting blocks are slidably arranged in the fixed blocks, the left end and the right end of each connecting block penetrate through the fixed blocks and extend to the outside of the fixed blocks, a hollow movable block is fixedly arranged between the two connecting blocks, a concave fixed block is movably arranged on one side, away from each other, of each connecting block, a dust removal rubber roller is rotatably arranged on the inner surfaces of the two concave fixed blocks through a fixed shaft, a filter screen is fixedly arranged on one side, away from each other, of the two fixed blocks on the two sides of the back surface of the inner cavity of the case, the outer surface of the dust removal rubber roller is rotatably connected with the front surface of the filter screen, a motor is fixedly arranged on the back surface of the inner cavity of the case, a rotating shaft is fixedly arranged at the output end of the motor through a speed reducer, the outer surface of the rotating shaft is fixedly provided with a centrifugal disc, and the outer surface of the centrifugal disc is rotatably connected with the inner surface of the hollow movable block.

Preferably, ventilation holes are formed in the two sides of the back face of the case, and clamping strips are fixedly mounted at the top and the bottom of one side, which is far away from the inner cavity of the connecting block, respectively.

Preferably, the middle parts of the bottoms of the inner cavities of the two connecting blocks are fixedly provided with telescopic rods, and springs are sleeved on the outer surfaces of the telescopic rods.

Preferably, two the equal fixed mounting in bottom of telescopic link has the start block, two the left side of start block all runs through and has seted up the draw-in groove.

Preferably, two equal fixed mounting in the relative one side of concave type fixed block has the kelly, two the spout has all been seted up to the top and the bottom of kelly, the internal surface of spout and the surface looks joint of card strip.

Preferably, two the equal fixed mounting of one end that the kelly is relative has L type fixture block, the surface of L type fixture block and the internal surface looks joint of draw-in groove.

(III) advantageous effects

Compared with the prior art, the utility model provides a projection equipment for multimedia classroom teaching possesses following beneficial effect: this a projection equipment accessible motor cooperation rotation axis for multimedia classroom teaching, centrifugal disc and hollow movable block drive the reciprocal lateral shifting of connecting block, the connecting block drives the dust removal rubber roll through concave type fixed block and clears away the dust on filter screen surface at reciprocal lateral shifting in-process, through pressing the starting block, again to both sides pulling concave type fixed block make L type fixture block break away from the draw-in groove and can accomplish the dismantlement to the dust removal rubber roll, through inserting L type fixture block, the movable block is opened to the pine at last and drive the starting block rebound through the bounce of spring and make the draw-in groove fix L type fixture block and can accomplish the installation to the dust removal rubber roll.

1. This a projection equipment for multimedia classroom teaching, through motor cooperation rotation axis, centrifugal disc and hollow movable block drive the reciprocal lateral shifting of connecting block, the connecting block drives the dust removal rubber roll through concave type fixed block and clears away the dust on filter screen surface at reciprocal lateral shifting in-process, the effect of removing dust to equipment has been realized, the more radiating problem of influence equipment of dust accumulation has been avoided, can prevent effectively that the dust from getting into equipment inside to cause the influence to components and parts.

2. This a projection equipment for multimedia classroom teaching, through pressing the start block, make L type fixture block break away from the draw-in groove to the concave type fixed block of both sides pulling again and can accomplish the dismantlement to the dust removal rubber roll, through inserting L type fixture block, the loose start block that opens at last and drives start block rebound through the bounce of spring makes the draw-in groove fix L type fixture block and can accomplish the installation to the dust removal rubber roll, be convenient for carry out the dismouting to the dust removal rubber roll, reached and be convenient for carry out the purpose of changing to the dust removal rubber roll, the continuity of equipment dust removal has been guaranteed.

Drawings

Fig. 1 is a front view of the internal structure of the present invention in longitudinal section.

Fig. 2 is a partial front view of the inner structure of the connecting block of the present invention.

Fig. 3 is a partial left side view of the external structure of the concave fixed block of the present invention.

Fig. 4 is a perspective view of the external structure of the L-shaped fixture block of the present invention.

In the figure: 1. a chassis; 2. a fixed block; 3. connecting blocks; 4. a hollow movable block; 5. a concave fixed block; 6. a dedusting rubber roller; 7. a filter screen; 8. a motor; 9. a rotating shaft; 10. a centrifugal pan; 11. clamping the strip; 12. a telescopic rod; 13. a spring; 14. a start block; 15. a card slot; 16. a chute; 17. an L-shaped fixture block; 18. and (5) clamping the rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, a projection device for multimedia classroom teaching comprises a case 1, fixed blocks 2 are fixedly mounted on both sides of the back surface of an inner cavity of the case 1, the fixed blocks 2 are used for providing external support for connecting blocks 3, the connecting blocks 3 are slidably mounted inside the fixed blocks 2, the left end and the right end of each connecting block 3 penetrate through the fixed blocks 2 and extend to the outside of the fixed blocks 2, a hollow movable block 4 is fixedly mounted between the two connecting blocks 3, a concave fixed block 5 is movably mounted on one side of each connecting block 3, a dust removing rubber roll 6 is rotatably mounted on the inner surfaces of the two concave fixed blocks 5 through a fixed shaft, filter screens 7 are fixedly mounted on both sides of the back surface of the inner cavity of the case 1 and on the sides of the two fixed blocks 2 far away from each other, the outer surfaces of the dust removing rubber rolls 6 are rotatably connected with the front surfaces of the filter screens 7, and a motor 8 is fixedly mounted on the back surface of the inner cavity of the case 1, the motor 8 is electrically connected with an external power supply, the motor 8 is controlled by an external PLC programming program, the output end of the motor 8 is fixedly provided with a rotating shaft 9 through a speed reducer, the outer surface of the rotating shaft 9 is fixedly provided with a centrifugal disc 10, the outer surface of the centrifugal disc 10 is rotatably connected with the inner surface of a hollow movable block 4, both sides of the back surface of the case 1 are provided with vent holes, the tops and bottoms of the mutually far sides of the inner cavities of the two connecting blocks 3 are fixedly provided with clamping strips 11, the middle parts of the bottoms of the inner cavities of the two connecting blocks 3 are fixedly provided with telescopic links 12, the outer surface of the telescopic links 12 is sheathed with springs 13, the bottoms of the two telescopic links 12 are fixedly provided with actuating blocks 14, the left sides of the two actuating blocks 14 are both provided with clamping grooves 15 in a penetrating way, one side of the two concave fixed blocks 5 is both fixedly provided with clamping rods 18, and the tops and the bottoms of the two clamping rods 18 are both provided with sliding grooves 16, the inner surface of the sliding groove 16 is clamped with the outer surface of the clamping strip 11, the opposite ends of the two clamping rods 18 are fixedly provided with L-shaped clamping blocks 17, and the outer surface of each L-shaped clamping block 17 is clamped with the inner surface of the clamping groove 15.

The working principle is as follows: firstly, external dust is adhered to the surface of a filter screen 7 through a vent hole, a motor 8 is matched with a speed reducer to drive a rotating shaft 9 to rotate, the rotating shaft 9 is matched with a hollow movable block 4 through a centrifugal disc 10 to drive a connecting block 3 to reciprocate and move transversely in the rotating process, the connecting block 3 drives a dust removal rubber roller 6 through a concave fixed block 5 to remove the dust on the surface of the filter screen 7 in the reciprocating and moving transversely, when more dust adhered to the surface of the dust removal rubber roller 6 needs to be replaced, the disassembly of the dust removal rubber roller 6 can be completed by pressing the starting block 14 and pulling the concave fixing blocks 5 towards the two sides to separate the L-shaped clamping blocks 17 from the clamping grooves 15, then, the sliding groove 16 is aligned with the clamping strip 11 and inserted into the clamping rod 18 and the L-shaped clamping block 17, and finally the starting block 14 is loosened, and the starting block 14 is driven to move upwards by the rebound force of the telescopic rod 12 and the spring 13, so that the clamping groove 15 fixes the L-shaped clamping block 17, and the installation of the dust removal rubber roller 6 can be completed.

In summary, the projection device for multimedia classroom teaching can drive the connecting block 3 to reciprocate and move transversely through the motor 8 in cooperation with the rotating shaft 9, the centrifugal disc 10 and the hollow movable block 4, the connecting block 3 drives the dust removal rubber roll 6 to remove dust on the surface of the filter screen 7 in the reciprocating and transverse movement process through the concave fixing block 5, the dust removal rubber roll 6 can be detached by pressing the starting block 14 and pulling the concave fixing blocks 5 towards two sides to separate the L-shaped fixture blocks 17 from the clamping grooves 15, and the dust removal rubber roll 6 can be installed by inserting the L-shaped fixture blocks 17, loosening the starting block 14 finally and driving the starting block 14 to move upwards through the rebound force of the spring 13 to enable the clamping grooves 15 to fix the L-shaped fixture blocks 17.

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

Claims

1. A projection equipment for multimedia classroom teaching, comprising a cabinet (1), characterized in that: the dust removal rubber roller machine is characterized in that fixed blocks (2) are fixedly mounted on two sides of the back face of an inner cavity of the machine case (1), connecting blocks (3) are slidably mounted inside the fixed blocks (2), the left end and the right end of each connecting block (3) penetrate through the fixed blocks (2) and extend to the outside of the fixed blocks (2), hollow movable blocks (4) are fixedly mounted between the connecting blocks (3), concave fixed blocks (5) are movably mounted on one sides of the connecting blocks (3) far away from each other, dust removal rubber rollers (6) are rotatably mounted on the inner surfaces of the concave fixed blocks (5) through fixed shafts, filter screens (7) are fixedly mounted on two sides of the back face of the inner cavity of the machine case (1) and on the sides of the two fixed blocks (2) far away from each other, the outer surfaces of the dust removal rubber rollers (6) are rotatably connected with the front faces of the filter screens (7), and a motor (8) is fixedly mounted on the back face of the inner cavity of the machine case (1), the output of motor (8) has rotation axis (9) through speed reducer fixed mounting, the outer fixed surface of rotation axis (9) installs centrifugal disc (10), the surface of centrifugal disc (10) rotates with the internal surface of hollow movable block (4) to be connected.

2. A projection device for multimedia classroom teaching as claimed in claim 1, wherein: ventilation holes are formed in the two sides of the back face of the case (1), and clamping strips (11) are fixedly mounted at the top and the bottom of the inner cavity of the connecting block (3), which are far away from one side of the inner cavity.

3. A projection device for multimedia classroom teaching as claimed in claim 1, wherein: two equal fixed mounting in middle part of connecting block (3) inner chamber bottom has telescopic link (12), the surface cover of telescopic link (12) is equipped with spring (13).

4. A projection device for multimedia classroom teaching as claimed in claim 3, wherein: two the equal fixed mounting in bottom of telescopic link (12) has start piece (14), two the left side of start piece (14) all runs through and has seted up draw-in groove (15).

5. A projection device for multimedia classroom teaching as claimed in claim 1, wherein: two equal fixed mounting in one side that concave type fixed block (5) is relative has kelly (18), two spout (16) have all been seted up to the top and the bottom of kelly (18), the internal surface of spout (16) and the surface looks joint of card strip (11).

6. A projection device for multimedia classroom teaching as claimed in claim 5, wherein: two equal fixed mounting in the one end that kelly (18) are relative has L type fixture block (17), the surface of L type fixture block (17) and the internal surface looks joint of draw-in groove (15).