CN210401998U

CN210401998U - Presentation device is used in middle and primary school's teaching

Info

Publication number: CN210401998U
Application number: CN201921820636.5U
Authority: CN
Inventors: 蔡超
Original assignee: Zhejiang Maixing Network Technology Co Ltd
Current assignee: Zhejiang Maixing Network Technology Co Ltd
Priority date: 2019-10-25
Filing date: 2019-10-25
Publication date: 2020-04-24
Anticipated expiration: 2029-10-25

Abstract

The utility model relates to the technical field of teaching equipment, in particular to a demonstration device for teaching of middle and primary schools, which solves the defect of difficult cleaning of projection cloth after long service life existing in the prior art, and comprises a rolling shell, a rolling and releasing roller and a lower cross bar, wherein one side in the rolling shell is provided with a motor, a lower opening is arranged below the rolling shell, a rotating shaft is welded in the rolling and releasing roller, one end of the rotating shaft is connected with an output shaft of the motor, the other end of the rotating shaft is rotationally connected with the inner wall of the rolling shell, the projection cloth is wound on the rolling and releasing roller, the lower cross bar is bonded with the bottom of the projection cloth, and a placing cavity is arranged at one end of the lower cross bar, the utility model pushes a movable sponge cushion to move towards a fixed sponge cushion through an adjusting threaded rod, the movable sponge cushion is matched with the fixed sponge cushion to clean dust on the front and, and the laser pen is arranged, so that the teaching is facilitated.

Description

Presentation device is used in middle and primary school's teaching

Technical Field

The utility model relates to a teaching equipment technical field especially relates to a presentation device is used in middle and primary school's teaching.

Background

Teaching is a human-specific talent training activity consisting of teacher's teaching and student's learning. Through the activities, teachers purposefully, programmatically and organically guide students to learn and master cultural scientific knowledge and skills, and promote the improvement of the qualities of the students, so that the students become people required by the society. Present day when teaching, all can use the projection curtain basically, and current projection cloth live time is of a specified duration just can become dirty, influences the projection effect, and then influences the teaching quality.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the projection cloth in the prior art is difficult to clean after long-term use, and providing a demonstration device for primary and secondary school teaching.

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

the utility model provides a presentation device is used in middle and primary school's teaching, includes the rolling casing, receive and releases roller and sheer pole, one side in the rolling casing is equipped with the motor, and the below of rolling casing has seted up the under shed, weld the axis of rotation in receiving and releasing the roller, and the one end of axis of rotation and the output shaft of motor, the other end of axis of rotation is connected with the inner wall rotation of rolling casing, it has projection cloth to receive and release the winding on the roller, the sheer pole bonds with the bottom of projection cloth, and the one end of sheer pole has been seted up and has been placed the chamber, and the outer end of placing the chamber has the end cover through hinged joint, and places and.

Preferably, the inner side wall surface of the lower opening is welded with a fixed rod, and one end of the fixed rod is adhered with a fixed sponge cushion.

Preferably, a threaded hole is formed in the front bottom of the winding shell, a threaded rod is connected to the threaded hole in a threaded mode, and a movable sponge cushion is arranged at one end of the threaded rod.

Preferably, a clamping groove is formed in the movable spongy cushion, and a clamping block in sliding fit with the clamping groove is arranged at one end, close to the movable spongy cushion, of the threaded rod.

Preferably, the fixed spongy cushion is matched with the movable spongy cushion and is in a long strip shape, and two ends of the movable spongy cushion are in sliding fit with the wall surfaces on two sides of the lower opening.

Compared with the prior art, the utility model discloses a threaded rod promotes to remove the foam-rubber cushion and removes to fixed foam-rubber cushion, removes the foam-rubber cushion and cleans totally with the dust on the positive and negative two sides of projection cloth with fixed foam-rubber cushion cooperation, cleans clean projection cloth convenient and fast to be furnished with the laser pen, made things convenient for the teaching.

Drawings

Fig. 1 is a schematic view of a main view cross-section structure of a demonstration device for teaching in middle and primary schools provided by the utility model;

fig. 2 is a schematic side view of a section structure of a demonstration apparatus for teaching in middle and primary schools according to the present invention;

fig. 3 is the utility model provides a demonstration device's enlarged structure schematic diagram of a department of primary and secondary school for teaching.

In the figure: 1 rolling casing, 2 receive and release roller, 3 axis of rotation, 4 projection cloth, 5 motors, 6 under shed, 7 sheer poles, 71 place the chamber, 72 side covers, 8 laser pens, 9 dead levers, 10 fixed foam-rubber cushion, 11 threaded rods, 12 removal foam-rubber cushion, 13 fixture blocks, 14 draw-in grooves.

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.

Referring to fig. 1-3, a demonstration device for middle and primary school teaching, including rolling shell 1, receive and release roller 2 and sheer pole 7, one side in rolling shell 1 is equipped with motor 5, and the below of rolling shell 1 has seted up under shed 6, it has welded axis of rotation 3 in the roller 2 to receive and release, and the one end of axis of rotation 3 and the output shaft of motor 5, the other end of axis of rotation 3 rotates with the inner wall of rolling shell 1 and is connected, it has projection cloth 4 to receive and release the winding on the roller 2, sheer pole 7 bonds with the bottom of projection cloth 4, and the one end of sheer pole 7 has seted up places chamber 71, the outer end of placing chamber 71 has end cover 72 through hinged joint, and place and be equipped with laser pen 8 in the chamber 71, open end cover 72, can take out laser pen 8 and begin to use.

Wherein, the welding has dead lever 9 on the inside wall face of under shed 6, and the one end of dead lever 9 is stained with fixed foam-rubber cushion 10, the positive bottom of rolling casing 1 is seted up threaded hole, threaded connection has threaded rod 11 in the screw hole, and the one end of threaded rod 11 is equipped with removal foam-rubber cushion 12, be equipped with draw-in groove 14 in the removal foam-rubber cushion 12, and threaded rod 11 is close to the one end of removing foam-rubber cushion 12 and be equipped with fixture block 13 with draw-in groove 14 sliding fit, fixed foam-rubber cushion 10 just all is rectangular form with removal foam-rubber cushion 12 phase-match, the wall sliding fit of the both ends of removing foam-rubber cushion 12 and under shed 6 both sides, when projection cloth 4 is cleaned to needs, rotating threaded rod 11, threaded rod 11 promotes to remove foam-rubber cushion 12 and removes to fixed foam-rubber cushion 10, remove foam-rubber cushion 12 and.

Example (b): when needs use projection cloth 4 to teach the projection show, motor 5 is opened, motor 5 drives axis of rotation 3 and rotates, receive and release roller 2 and rotate and emit projection cloth 4, projection cloth 4 moves down and expandes, open end cover 72, can take out laser pen 8 and begin to use, when projection cloth 4 is cleaned to needs, it packs up projection cloth 4 to open motor 5 reversal, rotating threaded rod 11, threaded rod 11 promotes to remove foam-rubber cushion 12 and removes to fixed foam-rubber cushion 10, remove foam-rubber cushion 12 and fixed foam-rubber cushion 10 cooperation and clean the dust on the positive and negative both sides of projection cloth 4.

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. A presentation device is used in middle and primary school's teaching, its characterized in that includes:

the winding device comprises a winding shell (1), wherein a motor (5) is arranged on one side in the winding shell (1), and a lower opening (6) is formed below the winding shell (1);

the winding and unwinding device comprises a winding and unwinding roller (2), wherein a rotating shaft (3) is welded in the winding and unwinding roller (2), one end of the rotating shaft (3) is connected with an output shaft of a motor (5), the other end of the rotating shaft (3) is rotatably connected with the inner wall of a winding shell (1), and projection cloth (4) is wound on the winding and unwinding roller (2); and

the lower cross bar (7) is bonded with the bottom of the projection cloth (4), one end of the lower cross bar (7) is provided with a placing cavity (71), the outer end of the placing cavity (71) is connected with an end cover (72) through a hinge, and a laser pen (8) is arranged in the placing cavity (71).

2. The demonstration device for teaching in middle and primary schools according to claim 1, wherein a fixing rod (9) is welded to the inner side wall surface of the lower opening (6), and a fixing sponge mat (10) is adhered to one end of the fixing rod (9).

3. The demonstration device for teaching in middle and primary schools according to claim 1, wherein a threaded hole is formed in the bottom of the front face of the winding shell (1), a threaded rod (11) is connected to the threaded hole in a threaded manner, and a movable sponge cushion (12) is arranged at one end of the threaded rod (11).

4. The demonstration device for primary and secondary school teaching as claimed in claim 3, wherein a slot (14) is formed in the movable foam-rubber cushion (12), and a clamping block (13) in sliding fit with the slot (14) is arranged at one end of the threaded rod (11) close to the movable foam-rubber cushion (12).

5. The demonstration device for teaching in middle and primary schools according to claim 2, wherein the fixed spongy cushion (10) is matched with the movable spongy cushion (12) and is in a long strip shape, and two ends of the movable spongy cushion (12) are in sliding fit with wall surfaces on two sides of the lower opening (6).