CN220763938U

CN220763938U - Rolling blackboard

Info

Publication number: CN220763938U
Application number: CN202322578312.8U
Authority: CN
Inventors: 杨美; 杨洪祥; 辛克珂
Original assignee: Weifang Institute Of Technology
Current assignee: Weifang Institute Of Technology
Priority date: 2023-09-22
Filing date: 2023-09-22
Publication date: 2024-04-12
Anticipated expiration: 2033-09-22

Abstract

The utility model discloses a rolling blackboard, which relates to the field of blackboards and comprises an outer frame, wherein a rolling assembly is arranged in the outer frame, a fixed shaft is arranged in the outer frame, a cylindrical cotton wiper in contact with the rolling assembly is fixedly arranged at the outer end of the fixed shaft, the bottom end of the fixed shaft extends to the bottom of the outer frame and is fixedly provided with a poking wheel, a first fastening bolt is arranged on the poking wheel through threads, and a flapping assembly is arranged in the outer frame. According to the utility model, the fixed shaft and the cylindrical cotton eraser are arranged, the rolling assembly rubs with the cylindrical cotton eraser to erase handwriting when rolling, the fixed shaft and the cylindrical cotton eraser can rapidly adjust the contact part of the cylindrical cotton eraser and the rolling assembly through rotation, so that the phenomenon that the subsequent erasing effect is affected due to the accumulation of chalk dust is avoided, the U-shaped guide rod is pulled, the clapping plate is pushed by the elastic force of the spring to clap the cylindrical cotton eraser, and the rapid cleaning of the chalk dust on the cylindrical cotton eraser is realized through clapping.

Description

Rolling blackboard

Technical Field

The utility model relates to the field of blackboards, in particular to a rolling blackboard.

Background

The blackboard is a widely used teaching tool, the original blackboard is a black and flat board, the basic writing requirements can be met, and along with development, the structure and the function of the blackboard become more complex.

In the practical use process of the blackboard, the most inconvenient is that handwriting on the blackboard needs to be manually erased, and in order to make the use of the blackboard more convenient, a blackboard capable of more conveniently erasing the handwriting has been shown in the prior art, such as a rolling blackboard with a publication number of CN 102371822A.

The blackboard of roll formula is through taking place the friction with the blackboard eraser structure and is carried out the erasure of handwriting in the roll in-process, but the blackboard eraser can be stained with a large amount of chalk dust after long-time use, need clear up, and the blackboard eraser in the prior art is cleared up comparatively inconveniently.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides the rolling blackboard, wherein the fixed shaft and the cylindrical cotton eraser are arranged on one side of the rolling component, the rolling component rubs with the cylindrical cotton eraser to erase handwriting when rolling, the fixed shaft and the cylindrical cotton eraser can rapidly adjust the contact part of the cylindrical cotton eraser and the rolling component through rotation, so that the subsequent erasing effect is prevented from being influenced due to the accumulation of chalk dust, and the problems in the background art can be effectively solved.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the rolling blackboard comprises an outer frame, wherein a rolling assembly is arranged in the outer frame, a fixed shaft is arranged in the outer frame, and a cylindrical cotton wiper contacted with the rolling assembly is fixedly arranged at the outer end of the fixed shaft;

the fixed shaft is positioned at one side of the rolling assembly, two ends of the fixed shaft are movably connected with the inner wall of the outer frame through bearings, the bottom end of the fixed shaft extends to the bottom of the outer frame and is fixedly provided with a poking wheel, and a first fastening bolt is arranged on the poking wheel through threads;

the chalk dust cleaning device is characterized in that a beating assembly is arranged in the outer frame and arranged on one side of the cylindrical cotton swab and can clean chalk dust on the cylindrical cotton swab.

Further, the beating component comprises two sleeves fixedly arranged on the inner wall of the outer frame, a U-shaped guide rod is arranged on one side of the outer frame, and two ends of the U-shaped guide rod extend into the outer frame through the two sleeves respectively;

the novel cotton swab is characterized in that the flapping assembly further comprises a flapping plate contacted with the cylindrical cotton swab, two ends of the U-shaped guide rod are fixedly connected with the flapping plate, a spring is fixedly arranged at one end of the sleeve, facing the flapping plate, of the sleeve, and one end of the spring is fixedly connected with the flapping plate.

Further, the sealing plate is installed to the frame front side, beat subassembly, cylindric cotton and wipe all to be located the sealing plate rear side, realized confined purpose, avoid the chalk dust to spill.

Further, the rolling assembly comprises two rollers, two ends of each roller are movably connected with the inner wall of the outer frame through bearings, a soft blackboard is sleeved at the outer end of each roller, the two rollers are connected through the soft blackboard, the rotation of each roller drives the soft blackboard, and therefore the purpose of rolling is achieved, and the soft blackboard is contacted with the cylindrical cotton eraser.

Further, the soft blackboard is internally provided with a supporting plate, the top end and the bottom end of the supporting plate are fixedly connected with the inner wall of the outer frame, the front side of the supporting plate is contacted with the soft blackboard, and the supporting plate supports the soft blackboard in the writing process.

Further, a rotating box is arranged at the bottom end of the outer frame, a switching shaft is arranged in the rotating box, and the top end of the switching shaft extends into the outer frame and is fixedly connected with the bottom end of one of the rollers;

the adapter shaft bottom end fixing is equipped with first bevel gear, rotate the inside external axle that is equipped with of box, external axle one end is fixed to be equipped with first bevel gear engaged with second bevel gear.

Further, the other end of the external shaft extends to the front side of the rotating box and is fixedly provided with a rotating wheel, a second fastening bolt is arranged on the rotating wheel through threads, so that the rotating wheel can be fixed, a rolling assembly is further fixed, and a handle is arranged on the front side of the rotating wheel through a rotating shaft.

Compared with the prior art, the utility model provides a rolling blackboard which comprises the following components

The beneficial effects are that:

through set up fixed axle and cylindric cotton and wipe in rolling assembly one side, rolling assembly takes place the erasure of friction with cylindric cotton when rolling, and fixed axle and cylindric cotton wipe then can be through the position of rotating the quick adjustment cylindric cotton and rolling assembly contact, avoid chalk dust accumulation and influence subsequent erasure effect, still can be through pulling U type guide arm, with the help of the elasticity promotion of spring to beat the board and beat cylindric cotton and wipe, through beating the quick clearance of realization to cylindric cotton on the chalk dust.

Drawings

FIG. 1 is a perspective view of the present utility model;

FIG. 2 is a perspective view of the present utility model;

FIG. 3 is a perspective view showing a disassembled state of a sealing plate according to the present utility model;

FIG. 4 is a top cross-sectional view of the present utility model;

FIG. 5 is a perspective view of a flapping assembly of the present utility model;

FIG. 6 is an enlarged view of portion A of FIG. 3 in accordance with the present utility model;

FIG. 7 is an enlarged view of portion B of FIG. 2 in accordance with the present utility model;

fig. 8 is a side cross-sectional view of the rotating cassette of the present utility model.

In the figure: 1. an outer frame; 2. a rolling assembly; 201. a roller; 202. a soft blackboard; 203. a support plate; 3. beating the assembly; 301. beating the plate; 302. a sleeve; 303. u-shaped guide rod; 304. a spring; 4. a sealing plate; 5. cylindrical cotton wiper; 6. rotating the box; 7. a thumb wheel; 8. a rotating wheel; 9. a grip; 10. an external shaft; 11. a transfer shaft; 12. a first bevel gear; 13. a second bevel gear; 14. and a fixed shaft.

Detailed Description

In order that the manner in which the above-recited features, advantages, objects and advantages of the present utility model are obtained, a more particular description of the utility model briefly summarized above may be had by reference to the embodiments thereof which are illustrated in the appended drawings. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1-8, the utility model provides a rolling blackboard, which comprises an outer frame 1, wherein a rolling assembly 2 is arranged in the outer frame 1, a fixed shaft 14 is arranged in the outer frame 1, and a cylindrical cotton swab 5 which is contacted with the rolling assembly 2 is fixedly arranged at the outer end of the fixed shaft 14;

the fixed shaft 14 is positioned at one side of the rolling assembly 2, both ends of the fixed shaft 14 are movably connected with the inner wall of the outer frame 1 through bearings, the bottom end of the fixed shaft 14 extends to the bottom of the outer frame 1 and is fixedly provided with a thumb wheel 7, and the thumb wheel 7 is provided with a first fastening bolt through threads;

the inner part of the outer frame 1 is provided with a beating component 3, and the beating component 3 is arranged on one side of the cylindrical cotton swab 5 and can clean chalk dust on the cylindrical cotton swab 5.

The fixed shaft 14 is arranged on one side of the rolling assembly 2, the cylindrical cotton swab 5 contacted with the rolling assembly 2 is fixed at the outer end of the fixed shaft 14, when handwriting on the rolling assembly 2 needs to be erased, the rolling assembly 2 is controlled to roll, friction is generated between the rolling assembly 2 and the cylindrical cotton swab 5 in the rolling process, so that handwriting on the rolling assembly 2 is erased, in a use state, the first fastening bolt on the deflector wheel 7 is screwed, the fixed shaft 14 and the cylindrical cotton swab 5 are in a fixed state, after a period of use, the first fastening bolt can be loosened, the deflector wheel 7 is rotated, the fixed shaft 14 and the cylindrical cotton swab 5 are driven to rotate, the contact part of the cylindrical cotton swab 5 and the rolling assembly 2 is rapidly adjusted, the subsequent erasing effect is prevented from being influenced due to chalk dust accumulation, and the accumulated chalk dust on the cylindrical cotton swab 5 can be beaten and cleaned by the beating assembly 3.

In the use process, chalk dust accumulated on the cylindrical cotton swab 5 needs to be cleaned, as shown in fig. 3-5, the beating assembly 3 comprises two sleeves 302 fixedly arranged on the inner wall of the outer frame 1, one side of the outer frame 1 is provided with a U-shaped guide rod 303, and two ends of the U-shaped guide rod 303 extend into the outer frame 1 through the two sleeves 302 respectively;

the flapping assembly 3 further comprises a flapping plate 301 contacted with the cylindrical cotton swab 5, two ends of the U-shaped guide rod 303 are fixedly connected with the flapping plate 301, a spring 304 is fixedly arranged at one end of the sleeve 302, facing the flapping plate 301, of the sleeve 302, and one end of the spring 304 is fixedly connected with the flapping plate 301.

The sealing plate 4 is arranged on the front side of the outer frame 1, and the beating assembly 3 and the cylindrical cotton wiper 5 are both positioned on the rear side of the sealing plate 4, so that the purpose of sealing is realized, and the chalk dust is prevented from overflowing.

When the chalk dust on the cylindrical cotton swab 5 is cleaned, the U-shaped guide rod 303 is pulled, the beating plate 301 is driven to move through the U-shaped guide rod 303, the beating plate 301 is far away from the cylindrical cotton swab 5, the springs 304 are compressed while moving, after the beating plate 301 moves for a certain distance, the U-shaped guide rod 303 is loosened, the elastic force of the springs 304 releases and pushes the beating plate 301 to enable the beating plate 301 to collide with the cylindrical cotton swab 5, the purpose of beating is achieved, the operation is repeated for a plurality of times, the chalk dust on the cylindrical cotton swab 5 can be cleaned through beating, and the convenient cleaning can be carried out on the chalk dust on the cylindrical cotton swab 5 while handwriting on the rolling assembly 2 is efficiently erased through the mode.

In order to realize the rolling of the rolling assembly 2, as shown in fig. 1 and 4, the rolling assembly 2 comprises two rollers 201, both ends of each roller 201 are movably connected with the inner wall of the outer frame 1 through bearings, soft blackboards 202 are sleeved at the outer ends of the rollers 201, the two rollers 201 are connected through the soft blackboards 202, the soft blackboards 202 are driven by the rotation of the rollers 201, so that the rolling purpose is realized, and the soft blackboards 202 are contacted with the cylindrical cotton erasers 5.

The inner side of the soft blackboard 202 is provided with a supporting plate 203, the top end and the bottom end of the supporting plate 203 are fixedly connected with the inner wall of the outer frame 1, the front side of the supporting plate 203 is contacted with the soft blackboard 202, and the supporting plate 203 supports the soft blackboard 202 in the writing process.

During the use, the chalk can be used for writing on the front side of the soft blackboard 202, the supporting plate 203 provides support for the soft blackboard 202 during the writing, and when the soft blackboard 202 is required to roll, the roller 201 is driven to rotate so as to drive the soft blackboard 202.

In order to facilitate driving the rolling assembly 2, as shown in fig. 3, 6 and 8, a rotating box 6 is installed at the bottom end of the outer frame 1, a switching shaft 11 is arranged in the rotating box 6, and the top end of the switching shaft 11 extends into the outer frame 1 and is fixedly connected with the bottom end of one of the rollers 201;

the bottom end of the transfer shaft 11 is fixedly provided with a first bevel gear 12, an external shaft 10 is arranged in the rotating box 6, and one end of the external shaft 10 is fixedly provided with a second bevel gear 13 meshed with the first bevel gear 12.

The other end of the external shaft 10 extends to the front side of the rotating box 6 and is fixedly provided with a rotating wheel 8, a second fastening bolt is arranged on the rotating wheel 8 through threads, so that the rotating wheel 8 can be fixed, the rolling assembly 2 is further fixed, and a handle 9 is arranged on the front side of the rotating wheel 8 through a rotating shaft.

When the rolling assembly 2 needs to be driven, the second fastening bolt on the rotating wheel 8 is loosened, the handle 9 is held by the hand, then the rotating wheel 8 is driven to rotate, the rotating wheel 8 drives the external shaft 10 to rotate, the external shaft 10 drives the second bevel gear 13, the second bevel gear 13 drives the first bevel gear 12 and the switching shaft 11, and the roller 201 is further enabled to rotate, so that the rolling assembly 2 rolls.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims.

Claims

1. The utility model provides a roll formula blackboard, includes frame (1), the inside roll subassembly (2) that are equipped with of frame (1), its characterized in that: a fixed shaft (14) is arranged in the outer frame (1), and a cylindrical cotton swab (5) contacted with the rolling assembly (2) is fixedly arranged at the outer end of the fixed shaft (14);

the fixed shaft (14) is positioned at one side of the rolling assembly (2), two ends of the fixed shaft (14) are movably connected with the inner wall of the outer frame (1) through bearings, the bottom end of the fixed shaft (14) extends to the bottom of the outer frame (1) and is fixedly provided with a poking wheel (7), and a first fastening bolt is arranged on the poking wheel (7) through threads;

the chalk dust cleaning device is characterized in that a beating assembly (3) is arranged inside the outer frame (1), and the beating assembly (3) is arranged on one side of the cylindrical cotton wiper (5) and can clean chalk dust on the cylindrical cotton wiper (5).

2. A scrolling blackboard according to claim 1, wherein: the flapping assembly (3) comprises two sleeves (302) fixedly arranged on the inner wall of the outer frame (1), one side of the outer frame (1) is provided with a U-shaped guide rod (303), and two ends of the U-shaped guide rod (303) extend into the outer frame (1) through the two sleeves (302) respectively;

the novel cotton swab is characterized in that the flapping assembly (3) further comprises a flapping plate (301) which is in contact with the cylindrical cotton swab (5), two ends of the U-shaped guide rod (303) are fixedly connected with the flapping plate (301), a spring (304) is fixedly arranged at one end, facing the flapping plate (301), of the sleeve (302), and one end of the spring (304) is fixedly connected with the flapping plate (301).

3. A scrolling blackboard according to claim 1, wherein: the sealing plate (4) is installed on the front side of the outer frame (1), and the beating component (3) and the cylindrical cotton wiper (5) are both positioned on the rear side of the sealing plate (4).

4. A scrolling blackboard according to claim 1, wherein: the rolling assembly (2) comprises two rollers (201), two ends of each roller (201) are movably connected with the inner wall of the outer frame (1) through bearings, soft blackboard (202) is sleeved at the outer end of each roller (201), the two rollers (201) are connected through the soft blackboard (202), and the soft blackboard (202) is in contact with the cylindrical cotton wiper (5).

5. A scrolling blackboard according to claim 4, wherein: the soft blackboard (202) is characterized in that a supporting plate (203) is arranged on the inner side of the soft blackboard (202), the top end and the bottom end of the supporting plate (203) are fixedly connected with the inner wall of the outer frame (1), and the front side of the supporting plate (203) is contacted with the soft blackboard (202).

6. A scrolling blackboard according to claim 4, wherein: the rotary box (6) is arranged at the bottom end of the outer frame (1), a switching shaft (11) is arranged in the rotary box (6), and the top end of the switching shaft (11) extends into the outer frame (1) and is fixedly connected with the bottom end of one roller (201);

the rotary shaft is characterized in that a first bevel gear (12) is fixedly arranged at the bottom end of the transfer shaft (11), an external shaft (10) is arranged inside the rotary box (6), and a second bevel gear (13) meshed with the first bevel gear (12) is fixedly arranged at one end of the external shaft (10).

7. A scrolling blackboard according to claim 6, wherein: the other end of the external shaft (10) extends to the front side of the rotating box (6) and is fixedly provided with a rotating wheel (8), a second fastening bolt is arranged on the rotating wheel (8) through threads, and a handle (9) is arranged on the front side of the rotating wheel (8) through a rotating shaft.