CN210777218U

CN210777218U - Projection screen adjusting device for computer teaching

Info

Publication number: CN210777218U
Application number: CN201921528679.6U
Authority: CN
Inventors: 郑定成
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-16
Filing date: 2019-09-16
Publication date: 2020-06-16
Anticipated expiration: 2029-09-16

Abstract

The utility model discloses a projection curtain adjusting device is used in computer teaching, including the curtain, the top of curtain is provided with the spool axle sleeve, and the curtain coils the circumference outer wall at the spool axle sleeve, the front surface of curtain is provided with the light sense sensor that the equidistance was arranged, and is connected with two telescopic cylinders of bilateral symmetry above the circumference outer wall of spool axle sleeve, two the top of telescopic cylinder is passed through the bolt fastening and is had the adapting rod, and the top surface central authorities of adapting rod install the bearing, the inner circle of bearing is connected with the connecting rod, and the connecting rod has the slider through bolted connection, the slider is connected with the threaded rod, and the threaded rod is provided with the slide rail outward. The utility model discloses the light sense sensor that sets up can gather indoor light luminance, carries out the luminance estimation on launching the computer through with the radio, carries out the regulation of luminance according to actual conditions, and intelligent control, the flexibility is strong, and magnetism is detained and can be fixed by holding the blackboard when being close to the blackboard.

Description

Projection screen adjusting device for computer teaching

Technical Field

The utility model relates to a teaching equipment technical field especially relates to a projection curtain adjusting device is used in computer teaching.

Background

Along with the development of science and technology, in modern teaching work, the multimedia plays very big effect, and projecting apparatus, curtain and the computer that set up combine to work in the classroom can be put and show characters, picture and video etc. in the classroom, not only makes the more audio-visual expression of knowledge come out, easily student understand, can also save teacher's work load for teaching work goes on more easily.

The utility model discloses a projector for computer teaching through retrieving that chinese patent No. CN204390504U discloses, the utility model discloses a projector for computer teaching, which comprises a support leg assembly, the support leg assembly comprises a first support leg, a second support leg and a connecting rod, the first support leg has a first end part and a first rod part, the second support leg has a second end part and a second rod part, the connecting rod is connected between the first end part and the second end part, an adjusting assembly, the adjusting assembly comprises a first adjusting assembly, the first adjusting assembly comprises a rack, the rack is fixedly connected to one side of the first rod part, a driving gear matched with the rack, the center of the driving gear is connected with a second adjusting rod, the utility model discloses the high-low position of the projector can be conveniently adjusted by adjusting the second adjusting rod, the use is rapid and convenient, however, the device can not adjust the projection distance, the projection brightness and the curtain rotation, and the adjustment mode and the function are single.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a projection screen adjusting device for computer teaching.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a projection curtain adjusting device is used in computer teaching, includes the curtain, the top of curtain is provided with the spool axle sleeve, and the curtain coils the circumference outer wall at spool axle sleeve, the front surface of curtain is provided with the light sense sensor that the equidistance was arranged, and is connected with two telescopic cylinder of bilateral symmetry, two above the circumference outer wall of spool axle sleeve the top of telescopic cylinder is fixed with the socket bar through the bolt, and installs the bearing in the top surface central authorities of socket bar, the inner circle of bearing is connected with the connecting rod, and the connecting rod has the slider through bolted connection, the slider is connected with the threaded rod, and is provided with the slide rail outward from the threaded rod, one side top of keeping away from the curtain of slide rail is fixed with the fixed plate through the bolt, and the central authorities of fixed plate have seted up the.

Preferably, the back surface of the curtain is provided with two symmetrical magnetic buttons.

Preferably, a first servo motor is installed at the top end of the reel shaft sleeve, and the top end of an output shaft of the first servo motor is fixed with the reel in the reel shaft sleeve through a coupler.

Preferably, the cylinder body of the telescopic cylinder is connected through sleeving, the outer wall of the circumference of the telescopic cylinder is provided with a connecting buckle, and the connecting buckle is provided with a button.

Preferably, the side of the sliding block is provided with a screw hole, and the diameter of the threaded rod is matched with the aperture of the screw hole.

Preferably, the bottom end of the slide rail is provided with a slide groove, and the slide block and the slide groove form a sliding connection.

Preferably, the inner wall of one side of the sliding groove, which is close to the curtain, is provided with a second servo motor, and the end part of an output shaft of the second servo motor is connected with the threaded rod.

Compared with the prior art, the utility model provides a projection curtain adjusting device is used in computer teaching possesses following beneficial effect:

1. through the light sense sensor who sets up, can gather indoor light luminance, through carrying out the luminance estimation on launching the computer with the radio, carry out the regulation of luminance according to actual conditions, intelligent control, the flexibility is strong, and the magnetism at the back is detained and can be fixed by holding the blackboard when being close to the blackboard, avoids the curtain unevenness to influence the impression.

2. Through the slide rail and the slider that set up, can carry out the slip around with the curtain of connecting through the slip of slide rail and slider, can adjust far and near to the curtain, make its adaptation classroom seat far and near more, the combination of spool in first servo motor and the spool axle sleeve can be rolled up the curtain automatically and put down, easily adjusts.

3. Through the telescopic cylinder and the connector link that set up, mutually support and use and can carry out the regulation of height to the curtain, the bearing is can move about, can make the curtain of connecting rotatory along with the rotation of bearing to change the angle of curtain, simple structure still reduces the cost, makes its sexual valence relative altitude.

The part that does not relate to in the device all is the same with prior art or can adopt prior art to realize, the utility model discloses simple structure, convenient operation, the flexibility is strong, the sexual valence relative altitude, and is intelligent, humanized.

Drawings

Fig. 1 is a schematic structural view of a projection screen adjusting device for computer teaching according to the present invention;

fig. 2 is a schematic structural view of a slide rail of a projection screen adjusting device for computer teaching according to the present invention;

fig. 3 is the utility model provides a section schematic diagram of a projection screen adjusting device telescopic cylinder for computer teaching.

In the figure: 1-slide block, 2-connecting rod, 3-bearing, 4-carrying rod, 5-scroll shaft sleeve, 6-curtain, 7-light sensor, 8-magnetic buckle, 9-first servo motor, 10-telescopic cylinder, 11-connecting buckle, 12-threaded rod, 13-fixing plate, 14-slide rail and 15-second servo motor.

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.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Example 1

Referring to fig. 1-3, a projection screen adjusting device for computer teaching comprises a screen 6, a scroll shaft sleeve 5 is arranged at the top end of the screen 6, the screen 6 is wound on the circumferential outer wall of the scroll shaft sleeve 5, light-sensitive sensors 7 are arranged on the front surface of the screen 6 at equal intervals, the light-sensitive sensors 7 collect light to a data sorting module in the light-sensitive sensors 7, the light is estimated by a control module which wirelessly transmits the light to a computer, so that the brightness can meet the requirements of different brightness in a classroom, two telescopic cylinders 10 which are bilaterally symmetrical are connected above the circumferential outer wall of the scroll shaft sleeve 5, the height of the whole screen 6 is adjusted by adjusting the lengths of the two telescopic cylinders, so as to meet the requirements of different users, a bearing rod 4 is fixed at the top ends of the two telescopic cylinders 10 through bolts, and a bearing 3 is arranged at the center of the surface of the top end of the bearing rod 4, the inner circle of bearing 3 is connected with connecting rod 2, bearing 3 is movable, can make curtain 6 rotatory along with bearing 3's rotation, change the angle that curtain 6 shows, the rethread bolt is fixed, and connecting rod 2 has slider 1 through bolted connection, slider 1 is connected with threaded rod 12, and threaded rod 12 is provided with slide rail 14 outward, slide rail 14 is fixed on the ceiling, through slider 1 and slide rail 14's combined work, can carry out fore-and-aft regulation to curtain 6, adapt to student's demand of watching more, slide rail 14 one side top of keeping away from curtain 6 has fixed plate 13 through the bolt fastening, and the mounting hole has been seted up to fixed plate 13's central authorities, threaded rod 12 has been alternate in the mounting hole, threaded rod 12 can rotate in the mounting hole.

The utility model discloses in, the back surface of curtain 6 is provided with the magnetism of two symmetries and detains 8, and magnetism is detained 8 and can be laminated with the blackboard, makes the curtain 6 laminate on the surface of blackboard.

Wherein, first servo motor 9 is installed on the top of spool axle sleeve 5, and the output shaft top of first servo motor 9 is fixed with the spool in the spool axle sleeve 5 through the shaft coupling, and the curtain 6 of rolling up on the spool axle sleeve 5 will rotate along with the direction that first servo motor 9 set up, makes curtain 6 rise or descend.

The telescopic cylinder 10 is connected through sleeving, the connecting buckle 11 is arranged on the outer wall of the circumference of the telescopic cylinder 10, the button is arranged on the connecting buckle 11, and the height of the telescopic cylinder 10 is adjusted through the button.

Wherein, the side of slider 1 is opened there is the screw, and the diameter of threaded rod 12 and the aperture looks adaptation of screw, and slider 1 slides along with the direction of rotation of threaded rod 12.

The bottom end of the slide rail 14 is provided with a slide groove, the slide block 1 and the slide groove form a sliding connection, and the threaded rod 12 rotates and drives the slide block 1 to slide in the slide groove.

The working principle is as follows: when the device is used, the first servo motor 9 is electrified, the rotating direction of the first servo motor 9 is set, the curtain 6 rolled on the surface of the scroll shaft sleeve 5 can be put down, the light sensor 7 on the surface of the curtain 6 can collect the indoor light brightness, the indoor light brightness can be estimated by emitting the light to a computer through radio, the brightness can be adjusted according to the actual situation, the magnetic buckle 8 on the back of the curtain 6 is fixed by absorbing the blackboard when being close to the blackboard, unevenness is avoided, if the angle of the curtain 6 needs to be adjusted, the bearing 3 can be used for adjustment, and the bolt is used for fixing after adjustment, when the height of the curtain 6 is adjusted, the button of the buckle can be pressed, the curtain 6 can be lowered by directly pulling out the telescopic cylinder 10, the desired height can be adjusted by controlling the pulling-out amount, if the button needs to be pressed, the telescopic cylinder 10 is directly pushed in to shorten the height, when the distance is adjusted, the threaded rod 12 rotates to drive the sliding block 1 sleeved on the surface of the threaded rod 12 to slide in the sliding groove to advance, and when the showing and watching are finished, the rotating direction of the first servo motor 9 is changed to lift the curtain 6 and roll the curtain on the circumferential outer wall of the scroll shaft sleeve 5.

Example 2

Referring to fig. 2, a projection screen adjusting device for computer teaching, in this embodiment, compared with embodiment 1, further includes a second servo motor 15 disposed on an inner wall of one side of the sliding groove close to the curtain 6.

The end of the output shaft of the second servo motor 15 is connected to the threaded rod 12, and the power supply of the second servo motor 15 is turned on, so that the second servo motor 15 drives the output shaft to drive the threaded rod 12 to rotate.

The working principle is as follows: when the second servo motor 15 is powered on, the second servo motor 15 will rotate, and the second servo motor 15 drives the output shaft, thereby driving the threaded rod 12 to rotate.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a projection screen adjusting device for computer teaching, includes curtain (6), its characterized in that, the top of curtain (6) is provided with spool axle sleeve (5), and curtain (6) convolutes the circumference outer wall at spool axle sleeve (5), the front surface of curtain (6) is provided with light sensation sensor (7) that the equidistance was arranged, and is connected with two telescopic cylinder (10) of bilateral symmetry above the circumference outer wall of spool axle sleeve (5), two the top of telescopic cylinder (10) is fixed with through the bolt and accepts pole (4), and the top surface central authorities of accepting pole (4) install bearing (3), the inner circle of bearing (3) is connected with connecting rod (2), and connecting rod (2) have slider (1) through bolted connection, slider (1) are connected with threaded rod (12), and threaded rod (12) are provided with slide rail (14) outward, the curtain (6) is kept away from to slide rail (14) one side top is fixed with fixed plate (13) through the bolt, and the mounting hole has been seted up to the central authorities of fixed plate (13), and threaded rod (12) have been worn to insert in the mounting hole.

2. The projection screen adjusting device for computer teaching as claimed in claim 1, wherein the back surface of the screen (6) is provided with two symmetrical magnetic buttons (8).

3. The projection screen adjusting device for computer teaching as claimed in claim 1, wherein the top end of the reel hub (5) is provided with a first servo motor (9), and the top end of the output shaft of the first servo motor (9) is fixed with the reel in the reel hub (5) through a coupling.

4. The projection screen adjusting device for computer teaching as claimed in claim 1, wherein the cylinders of the telescopic cylinder (10) are connected by sleeving, and the circumferential outer wall of the telescopic cylinder (10) is provided with a connecting buckle (11), and the connecting buckle (11) is provided with a button.

5. The projection screen adjusting device for computer teaching as claimed in claim 1, wherein the side of the sliding block (1) is provided with a screw hole, and the diameter of the threaded rod (12) is matched with the aperture of the screw hole.

6. The projection screen adjusting device for computer teaching as claimed in claim 1, wherein the bottom end of the slide rail (14) is provided with a slide groove, and the slide block (1) and the slide groove form a sliding connection.

7. The projection screen adjusting device for computer teaching as claimed in claim 6, wherein the inner wall of the sliding groove near the side of the screen (6) is provided with a second servo motor (15), and the end of the output shaft of the second servo motor (15) is connected with the threaded rod (12).