CN209977655U

CN209977655U - Projection equipment for teaching

Info

Publication number: CN209977655U
Application number: CN201920541335.2U
Authority: CN
Inventors: 管爱婷
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-20
Filing date: 2019-04-20
Publication date: 2020-01-21
Anticipated expiration: 2029-04-20

Abstract

The utility model relates to the technical field of teaching appliances, and discloses a projection device for teaching, which solves the problem that the current projector is inconvenient to adjust, and comprises a case, wherein four corners of the bottom of the case are all fixedly provided with rollers, one side of the top of the case is provided with an electric telescopic rod, the electric telescopic rod is positioned at the central position of the rear side of the case, one side of the upper end of the electric telescopic rod is fixedly connected with a supporting plate, the supporting plate is connected with the upper end of the case through a lifting component, the middle part of the upper end of the supporting plate is provided with a steering adjusting mechanism, the upper end of the steering adjusting mechanism is provided with an installation frame, and a projector body is arranged inside the installation frame; can adjust the height and the projection angle of projecting apparatus when using, compare in current fixed mounting structure on the ceiling, this novel regulation is convenient, is convenient for maintain when it breaks down simultaneously.

Description

Projection equipment for teaching

Technical Field

The utility model belongs to the technical field of teaching aid, specifically be a projection equipment is used in teaching.

Background

With the development of the education industry, projectors are widely applied to primary schools, colleges and universities, and for the projectors used by most of the colleges and universities in China at present, most of the projectors in the existing multimedia classroom are completely fixed on the ceiling, so that the horizontal position, the height position and the projection angle of the projector cannot be adjusted or the adjustable range is extremely limited, and certain inconvenience is brought to users.

Disclosure of Invention

To the above situation, for overcoming prior art's defect, the utility model provides a projecting apparatus is used in teaching, the effectual current projecting apparatus of having solved adjusts the problem of bringing inconvenience when using.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a projection equipment is used in teaching, includes quick-witted case, the equal fixed mounting in chassis bottom four corners has the gyro wheel, and machine roof portion one side is provided with electric telescopic handle, and electric telescopic handle is located quick-witted case rear side central point and puts, and electric telescopic handle upper end one side fixedly connected with layer board, and the layer board passes through lifting unit with quick-witted case upper end to be connected, and layer board upper end middle part is provided with turns to adjustment mechanism, turns to the adjustment mechanism upper end and is provided with the installing frame, and installing frame internally mounted has.

Preferably, the lifting assembly comprises a lower chute, an upper chute, a first fixed block, a second fixed block and a cross arm, the lower chute is fixedly mounted on two sides of the top of the case, the upper chute is fixedly mounted on two sides of the lower end of the supporting plate, the first fixed block is symmetrically mounted on the lower chute and one end of the upper chute, the second fixed block is slidably connected to one side of the lower chute and one side of the upper chute relative to the first fixed block, and the cross arm is hinged between the lower chute and the upper chute.

Preferably, a connecting rod used for enhancing the lifting stability is rotatably connected between the two side crossed arms.

Preferably, turn to adjustment mechanism and include casing, motor, pivot, bearing and carousel, casing and layer board fixed connection, the inside central authorities of casing install the motor, and the motor output runs through the casing upper end and is provided with the pivot, and the pivot is inlayed with the casing department of running through and is equipped with the bearing, and the pivot upper end is provided with the carousel, installing frame and carousel fixed connection.

Preferably, the heat dissipation holes are formed in the two sides of the shell, and a filter screen is installed on one side of each heat dissipation hole relative to the inner wall of the shell.

Preferably, the heat dissipation holes are arranged in an inclined mode, and the inner portions of the inclination angles of the heat dissipation holes are high and the outer portions of the inclination angles of the heat dissipation holes are low.

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

(1) the equipment can be flexibly pushed to the projection position through the action of the roller, and the movement is convenient;

(2) the supporting plate is driven to move up and down by telescopic motion through the arrangement of the electric telescopic rod, the supporting plate and the lifting assembly, the upper sliding groove in the lifting assembly moves along with the supporting plate at the moment, the first fixing block at one end of the upper sliding groove and the first fixing block at one end of the lower sliding groove are fixedly installed, the second fixing block slides, the supporting plate is supported by the cross arms in a shearing mode when the supporting plate moves up and down, the stability is good, and the height of the projector body is adjusted through the arrangement of the structure;

(3) through the setting that turns to adjustment mechanism, drive the carousel through the motor just reversing the drive pivot and rotate for the installing frame moves along with it, and then adjusts projecting apparatus body projection angle.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the filter screen of the present invention;

fig. 3 is a side view of the present invention;

in the figure: 1. a chassis; 2. a roller; 3. an electric telescopic rod; 4. a support plate; 5. a lifting assembly; 501. a lower chute; 502. an upper chute; 503. a first fixed block; 504. a second fixed block; 505. a cross arm; 6. A steering adjustment mechanism; 601. a housing; 602. a motor; 603. a rotating shaft; 604. a bearing; 605. a turntable; 7. installing a frame; 8. a projector body; 9. a connecting rod; 10. heat dissipation holes; 11. and (5) filtering by using a filter screen.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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.

Embodiment one, by figure 1, figure 2 and figure 3 give, the utility model discloses a machine case 1, the equal fixed mounting in machine case 1 bottom four corners has gyro wheel 2, make things convenient for the equipment can remove in a flexible way, machine case 1 top one side is provided with electric telescopic handle 3, and electric telescopic handle 3 is located the 1 rear side central position of machine case, the flexible 4 high position of layer board that drives through electric telescopic handle 3 changes, 3 upper end one side fixedly connected with layer boards 4 of electric telescopic handle, and layer boards 4 and machine case 1 upper end are passed through lifting unit 5 and are connected, make things convenient for the up-and-down motion of support plate 4, layer board 4 upper end middle part is provided with and turns to adjustment mechanism 6, it is provided with installing frame 7 to turn to adjustment mechanism 6 upper end, installing frame 7 internally mounted has projector body 8, it adjusts to drive projector body 8 angle through.

In the second embodiment, based on the first embodiment, as shown in fig. 1 and 3, the lifting assembly 5 includes a lower sliding chute 501, an upper sliding chute 502, a first fixing block 503, a second fixing block 504, and a cross arm 505, the lower sliding chute 501 is fixedly installed at two sides of the top of the chassis 1, the upper sliding chute 502 is fixedly installed at two sides of the lower end of the supporting plate 4, the first fixing block 503 is symmetrically installed at one end of the lower sliding chute 501 and one end of the upper sliding chute 502, the second fixing block 504 is slidably connected to one side of the lower sliding chute 501 and one side of the upper sliding chute 502 opposite to the first fixing block 503, the cross arm 505 is hinged between the lower sliding chute, when the electric telescopic rod 3 moves up and down to drive the supporting plate 4 to move, the upper chute 502 moves along with the supporting plate 4, since the upper chute 502 and the first fixing block 503 at one end of the lower chute 501 are fixedly installed, the second fixing block 504 slides, when the supporting plate 4 moves up and down, the cross arm 505 moves in a scissor-like manner to lift and lower the supporting plate 4.

In the third embodiment, on the basis of the first embodiment, as shown in fig. 1, a connecting rod 9 for enhancing the lifting stability is rotatably connected between the two side cross arms 505.

Fourth embodiment, on the basis of the first embodiment, as shown in fig. 2, the steering adjustment mechanism 6 includes a housing 601, a motor 602, a rotating shaft 603, a bearing 604 and a rotating plate 605, the housing 601 is fixedly connected to the supporting plate 4, the motor 602 is installed in the center inside the housing 601, the output end of the motor 602 penetrates through the upper end of the housing 601 to be provided with the rotating shaft 603, the bearing 604 is embedded at the penetrating position of the rotating shaft 603 and the housing 601 to reduce friction conveniently, the rotating plate 605 is arranged at the upper end of the rotating shaft 603, the mounting frame 7 is fixedly connected to the rotating plate 605, and the rotating shaft 603 is driven to rotate by the forward and reverse rotation of the motor 602 to drive the rotating plate 605 to rotate, so that.

Fifth embodiment, on the basis of fourth embodiment, given by fig. 1, louvre 10 has all been seted up to casing 601 both sides, and louvre 10 one side installs filter screen 11 for casing 601 inner wall, through louvre 10 and filter screen 11's setting for the heat that the motor 602 during operation produced can give off, and filter screen 11 can prevent that dust impurity from getting into casing 601 and causing the damage to motor 602.

In a sixth embodiment, based on the first embodiment, as shown in fig. 1, the heat dissipation holes 10 are disposed in an inclined manner, and the inner portions of the inclined angles of the heat dissipation holes 10 are higher and lower, so as to further improve the dustproof effect.

The working principle is as follows: when the device is used, the device is pushed to a projection position under the action of the roller 2, the supporting plate 4 is driven to move up and down through the telescopic motion of the electric telescopic rod 3, at the moment, the upper chute 502 in the lifting assembly 5 moves along with the supporting plate 4, as the upper chute 502 and the first fixed block 503 at one end of the lower chute 501 are fixedly installed, the second fixed block 504 slides, and when the supporting plate 4 moves up and down, the cross arm 505 performs scissor-type movement and the supporting plate 4 is supported, and through the structural arrangement, the height of the projector body 8 is adjusted; after the height adjustment, the rotating shaft 603 is driven to rotate forward and backward through the motor 602 to drive the rotating disc 605 to rotate, so that the mounting frame 7 moves along with the rotating shaft, and the projection angle of the projector body 8 is adjusted.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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. The utility model provides a projection equipment is used in teaching, includes quick-witted case (1), its characterized in that: the all fixed mounting in quick-witted case (1) bottom four corners has gyro wheel (2), machine case (1) top one side is provided with electric telescopic handle (3), and electric telescopic handle (3) are located quick-witted case (1) rear side central point and put, electric telescopic handle (3) upper end one side fixedly connected with layer board (4), and layer board (4) are connected through lifting unit (5) with quick-witted case (1) upper end, layer board (4) upper end middle part is provided with turns to adjustment mechanism (6), turn to adjustment mechanism (6) upper end and be provided with installing frame (7), installing frame (7) internally mounted has projecting apparatus body (8).

2. A teaching projection device according to claim 1, wherein: lifting unit (5) are including lower spout (501), go up spout (502), first fixed block (503), second fixed block (504) and crossing arm (505), lower spout (501) fixed mounting is in quick-witted case (1) top both sides, go up spout (502) fixed mounting in layer board (4) lower extreme both sides, first fixed block (503) are installed to lower spout (501) and last spout (502) one end symmetry, lower spout (501) and last spout (502) have second fixed block (504) for first fixed block (503) one side sliding connection, it articulates under between spout (501) and last spout (502) to cross arm (505).

3. A teaching projection device according to claim 2, wherein: and a connecting rod (9) used for enhancing the lifting stability is rotatably connected between the two side crossed arms (505).

4. A teaching projection device according to claim 1, wherein: the steering adjusting mechanism (6) comprises a shell (601), a motor (602), a rotating shaft (603), a bearing (604) and a turntable (605), the shell (601) is fixedly connected with the supporting plate (4), the motor (602) is installed in the center inside the shell (601), the output end of the motor (602) penetrates through the upper end of the shell (601) and is provided with the rotating shaft (603), the rotating shaft (603) penetrates through the shell (601) and is embedded with the bearing (604), the turntable (605) is arranged at the upper end of the rotating shaft (603), and the mounting frame (7) is fixedly connected with the turntable (605).

5. A teaching projection device according to claim 4, wherein: heat dissipation holes (10) are formed in the two sides of the shell (601), and a filter screen (11) is installed on one side of each heat dissipation hole (10) relative to the inner wall of the shell (601).

6. A teaching projection device according to claim 5, wherein: the heat dissipation holes (10) are arranged in an inclined mode, and the inner portions of the inclination angles of the heat dissipation holes (10) are high and the outer portions of the inclination angles are low.