CN210026811U

CN210026811U - Be used for projection of multi-functional classroom and dual-purpose blackboard of writing

Info

Publication number: CN210026811U
Application number: CN201920417025.XU
Authority: CN
Inventors: 赵萃; 吴却; 景凌凌; 乐卓昱; 王俊; 杨宏妮
Original assignee: Liuzhou Vocational and Technical College
Current assignee: Liuzhou Vocational and Technical College
Priority date: 2019-03-29
Filing date: 2019-03-29
Publication date: 2020-02-07
Anticipated expiration: 2029-03-29

Abstract

The utility model discloses a be used for dual-purpose blackboard of multi-functional classroom projection and writing relates to the educational equipment field, including blackboard body and white cloth, blackboard body is the rectangular plate structure of taking the rectangle frame all around on the front surface, the utility model discloses well blackboard body can be used the chalk to write and write the teaching, and the white cloth can be used to the projection to use, and the white cloth alternative shelters from in blackboard body the place ahead and convolutes on the fixed axle so that use as required, and when using the white cloth, the useless chalk seal on the blackboard body can be erased to the clearance board in the process that the white cloth follows the loose axle and tile to left, has practiced thrift the time of artifical blackboard of erasing alone, simple structure, and the practicality is strong; the support of loose axle upper end body coupling has guaranteed the steady removal of loose axle for the loose axle can be smoothly when removing through the cotton clearance blackboard body of clearance board rear surface, and the last spout of loose axle accessible upper end is directly taken out, convenient to detach and maintenance, is fit for promoting.

Description

Be used for projection of multi-functional classroom and dual-purpose blackboard of writing

Technical Field

The utility model relates to an educational equipment field, in particular to be used for projection of multi-functional classroom and dual-purpose blackboard of writing.

Background

Educational equipment includes a blackboard, white cloth for projection, a desk, a platform and the like, wherein the blackboard and the white cloth are often independently arranged, the white cloth is wound in a storage box above the blackboard for storage, and is released for projection when in use.

However, in the process of winding the white cloth, the machine is prone to phenomena of blocking, damage and the like, the white cloth cannot be smoothly wound and unwound, the efficiency is low during winding and unwinding, the white cloth winding machine is not suitable for popularization and use, and the practicability is gradually reduced.

Therefore, it is necessary to provide a blackboard for projection and writing in a multi-functional classroom to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a be used for multi-functional classroom projection and dual-purpose blackboard of writing to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a dual-purpose blackboard for projection and writing in a multifunctional classroom comprises a blackboard body and white cloth, wherein the blackboard body is of a rectangular plate structure with a rectangular frame on the periphery of the front surface, an upper sliding groove which penetrates through the blackboard body from top to bottom is arranged above the blackboard body, a lower sliding groove is arranged below the blackboard body, a movable shaft is arranged in the lower sliding groove in a sliding manner, the upper end of the movable shaft movably penetrates through the upper sliding groove above the blackboard body, one end of the movable shaft penetrating through the upper chute is integrally connected with a bracket, the rear side surface of the movable shaft close to the blackboard body is fixedly provided with a cleaning plate, one surface of the cleaning plate far away from the movable shaft is fixedly provided with cleaning cotton, the cleaning cotton is movably attached to the front surface of the blackboard body, the blackboard is characterized in that supporting plates are fixedly welded at two ends of the upper end of the right side face of the blackboard body, white cloth is arranged between the upper supporting plate and the lower supporting plate, one end of the white cloth is fixedly arranged on the right side face of the movable shaft, and the other end of the white cloth is wound on the fixed shaft.

Preferably, the upper chute and the lower chute are in left and right directions, and the depth of the lower chute is two centimeters.

Preferably, the support is of an L-shaped plate structure, an embedding groove is formed in the lower end of the support, a guide wheel is movably connected to the embedding groove through a rotating shaft, and the lower surface of the guide wheel is movably attached to the upper surface of the blackboard body.

Preferably, the white cloth is tied around the lower end position of the fixed shaft and movably attached with a movable baffle ring, and the lower surface of the movable baffle ring is movably attached to the upper surface of the supporting plate below.

Preferably, the movable baffle ring is of a circular ring structure and is connected to the outer ring of the fixed shaft in a threaded fit mode.

Preferably, the fixed shaft is of a round rod-shaped structure, and the upper end and the lower end of the fixed shaft respectively movably penetrate through the upper supporting plate and the lower supporting plate.

Preferably, a sealed movable baffle is arranged at the front end of the lower sliding chute, a supporting shaft is movably penetrated in the left-right direction of the lower end position of the movable baffle, and the left end and the right end of the supporting shaft are respectively movably inserted into the inner walls of the rectangular frame bodies at the left end and the right end of the front surface of the blackboard body.

The utility model discloses a technological effect and advantage:

1. the utility model discloses well blackboard body can be used the chalk to write and write the teaching, and the white cloth can be used for the projection to use, and the white cloth alternative shelters from in blackboard body the place ahead and winds on the fixed axle so that use as required, and when using the white cloth, can erase useless chalk imprint on the blackboard body at the clearance board in the process that the white cloth follows the loose axle and tiles to left, has practiced thrift the time of artifical blackboard of erasing alone, and can not appear the white cloth and can not receive and release the condition smoothly, simple structure, and the function is many, and the practicality is strong;

2. the support of loose axle upper end body coupling has guaranteed the steady removal of loose axle for the loose axle can be smoothly when removing through the cotton clearance blackboard body of clearance board rear surface, and the last spout of loose axle accessible upper end is directly taken out, convenient to detach and maintenance, is fit for promoting.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a top view of the present invention.

Fig. 3 is an enlarged schematic view of the structure at C in fig. 1 according to the present invention.

Fig. 4 is a cross-sectional view taken along line a-a of fig. 2 according to the present invention.

Fig. 5 is a cross-sectional view taken along line B-B of fig. 2 according to the present invention.

In the figure: 1. a blackboard body; 2. an upper chute; 3. a movable baffle; 4. a movable shaft; 5. cleaning the plate; 6. white cloth; 7. a movable baffle ring; 8. a fixed shaft; 9. a support plate; 10. a support; 11. embedding a groove; 12. a guide wheel; 13. cleaning cotton; 14. a support shaft; 15. a lower chute.

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.

The utility model provides a dual-purpose blackboard for projection and writing in a multifunctional classroom, as shown in figures 1-5, which comprises a blackboard body 1 and a white cloth 6, wherein the blackboard body 1 is a rectangular plate structure with a rectangular frame on the periphery of the front surface, an upper chute 2 which penetrates up and down is arranged above the blackboard body 1, a lower chute 15 is arranged below the blackboard body 1, a movable shaft 4 is arranged in the lower chute 15 in a sliding way, the upper end of the movable shaft 4 movably penetrates through the upper chute 2 arranged above the blackboard body 1, one end of the movable shaft 4 penetrating through the upper chute 2 is integrally connected with a bracket 10, a cleaning plate 5 is fixedly arranged on the rear side surface of the movable shaft 4 close to the blackboard body 1, one surface of the cleaning plate 5 far away from the movable shaft 4 is fixedly provided with a cleaning cotton 13, the cleaning cotton 13 is movably attached to the front surface of the blackboard body 1, two ends of the upper end of the right side surface of the, a white cloth 6 is arranged between the upper and the lower supporting plates 9, one end of the white cloth 6 is fixedly arranged on the right side surface of the movable shaft 4, and the other end is wound on the fixed shaft 8.

Further, in the above scheme, the upper chute 2 and the lower chute 15 both have a left-right trend, the depth of the lower chute 15 is two centimeters, the lower chute 15 is used for supporting the movable shaft 4, and the upper chute 2 is used for limiting the movable shaft 4, so that the movable shaft 4 is prevented from falling off.

Further, in the above scheme, the support 10 is in an L-shaped plate structure, the lower end of the support 10 is provided with an embedding groove 11, the embedding groove 11 is movably connected with a guide wheel 12 through a rotating shaft, the lower surface of the guide wheel 12 is movably attached to the upper surface of the blackboard body 1, and the movable shaft 4 is more smoothly moved by the cooperation of the support 10 and the guide wheel 12.

Further, in the above scheme, the white cloth 6 is wrapped on the fixed shaft 8, the lower end position is movably attached with the movable baffle ring 7, and the lower surface of the movable baffle ring 7 is movably attached to the upper surface of the supporting plate 9 below.

Further, in the above scheme, the movable baffle ring 7 is of a circular ring structure, the movable baffle ring 7 is connected to the outer ring of the fixed shaft 8 through thread fit, the movable baffle ring 7 is used for preventing the white cloth 6 from being wound downwards when the white cloth 6 is wound on the fixed shaft 8, so that the white cloth 6 is prevented from being wound unevenly and scattered, the fixed shaft 8 is prevented from moving downwards, and a limiting effect is achieved for the fixed shaft 8.

Further, in the above scheme, the fixing shaft 8 is in a round rod structure, and the upper and lower ends of the fixing shaft 8 respectively movably penetrate through the upper and lower sets of supporting plates 9.

Further, in the above scheme, the front end of lower chute 15 is equipped with sealed adjustable fender 3, the back shaft 14 has been worn in the activity of trend about adjustable fender 3's lower extreme position, both ends are movably inserted respectively about back shaft 14 and close in the rectangle framework inner wall at both ends about blackboard body 1 front surface, adjustable fender 3 uses back shaft 14 as the axle and can opens and close, when closing, when the loose axle 4 removes about, the chalk dust under the clearance through clearance board 5 can fall into it, when opening, conveniently clear up the chalk dust, convenience and practicality, it is humanized high.

This practical theory of operation:

during projection: the movable shaft 4 is moved to the leftmost end of the upper chute 2, the fixed shaft 8 at the right end of the white cloth 6 rotates relatively to wind and place the white cloth 6, and the white cloth 6 is laid on the front surface of the blackboard body 1 for projection.

When in writing: the fixed shaft 8 is rotated, so that the white cloth 6 is wound on the fixed shaft 8, the movable shaft 4 moves to the rightmost end of the upper chute 2 rightly, and the white cloth leaks out of the blackboard body 1 at the moment and can be used for writing.

The movable shaft 4 and the white cloth 6 are fixedly connected through glue, other fixing modes which can be separated from the upper chute 2 can be used for connection, the movable shaft 4 can be smoothly detached from the upper chute 2, the fixed shaft 8 and the movable baffle ring 7 are connected through a threaded structure, the movable baffle ring 7 can be rotated to enable the fixed shaft 8 to move up and down, and then the movable baffle ring is detached, so that the integral structure is convenient to use.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a be used for projection of multi-functional classroom and write dual-purpose blackboard, includes blackboard body (1) and white cloth (6), its characterized in that: the blackboard body (1) is of a rectangular plate structure with a rectangular frame on the periphery of the front surface, an upper chute (2) which penetrates through the blackboard body from top to bottom is arranged above the blackboard body (1), a lower chute (15) is arranged below the blackboard body (1), a movable shaft (4) is arranged in the lower chute (15) in a sliding manner, the upper end of the movable shaft (4) movably penetrates through the upper chute (2) above the blackboard body (1) and is arranged, one end of the movable shaft (4) penetrating through the upper chute (2) is integrally connected with a support (10), a cleaning plate (5) is fixedly arranged on the rear side surface of the movable shaft (4) close to the blackboard body (1), cleaning cotton (13) is fixedly arranged on one surface of the cleaning plate (5) far away from the movable shaft (4), the cleaning cotton (13) is movably attached to the front surface of the blackboard body (1), and supporting plates (9) are fixedly welded at two ends of the upper end of the right, a white cloth (6) is arranged between the upper and the lower groups of supporting plates (9), one end of the white cloth (6) is fixedly arranged on the right side surface of the movable shaft (4), and the other end is wound on the fixed shaft (8).

2. The blackboard for multifunctional classroom projection and writing as claimed in claim 1, wherein: go up spout (2) and glide slope (15) and all be about trend, the degree of depth of glide slope (15) is two centimetres.

3. The blackboard for multifunctional classroom projection and writing as claimed in claim 1, wherein: the blackboard is characterized in that the support (10) is of an L-shaped plate structure, an embedding groove (11) is formed in the lower end of the support (10), a guide wheel (12) is movably connected into the embedding groove (11) through a rotating shaft, and the lower surface of the guide wheel (12) is movably attached to the upper surface of the blackboard body (1).

4. The blackboard for multifunctional classroom projection and writing as claimed in claim 1, wherein: the white cloth (6) is wound on the fixed shaft (8), the lower end position of the white cloth is movably attached with a movable baffle ring (7), and the lower surface of the movable baffle ring (7) is movably attached to the upper surface of a supporting plate (9) below.

5. The blackboard for multifunctional classroom projection and writing as claimed in claim 4, wherein: the movable baffle ring (7) is of a circular ring structure, and the movable baffle ring (7) is connected to the outer ring of the fixed shaft (8) in a threaded fit mode.

6. The blackboard for multifunctional classroom projection and writing as claimed in claim 1, wherein: the fixed shaft (8) is of a round rod-shaped structure, and the upper end and the lower end of the fixed shaft (8) respectively movably penetrate through the upper supporting plate and the lower supporting plate (9).

7. The blackboard for multifunctional classroom projection and writing as claimed in claim 1, wherein: the front end of the lower sliding groove (15) is provided with a sealed movable baffle (3), the lower end position of the movable baffle (3) is movably penetrated with a supporting shaft (14) in the left and right directions, and the left end and the right end of the supporting shaft (14) are movably inserted into the inner walls of the rectangular frame bodies at the left end and the right end of the front surface of the blackboard body (1) respectively.