CN219706535U

CN219706535U - Blackboard cleaning structure

Info

Publication number: CN219706535U
Application number: CN202222558334.3U
Authority: CN
Inventors: 古小琴; 彭娟娟; 刘洋; 张宏艳; 田若欣; 肖雨桐
Original assignee: Wuhan Electric Power Technical College
Current assignee: Wuhan Electric Power Technical College
Priority date: 2022-09-27
Filing date: 2022-09-27
Publication date: 2023-09-19
Anticipated expiration: 2032-09-27

Abstract

The utility model discloses a blackboard cleaning structure, which comprises a supporting plate, a plurality of wiping columns and a detachable shell, wherein the supporting plate is provided with a plurality of wiping columns; the detachable shell is detachably connected with the supporting plate, and an ash storage part is formed in the detachable shell; a plurality of ash inlet grooves are formed in the support plate in a penetrating manner, and the bottom end of each ash inlet groove is communicated with the ash storage part through an ash inlet; each ash inlet groove is internally provided with a wiping column, and each wiping column is rotatably arranged in the corresponding ash inlet groove through a first rotating shaft positioned in the center of the wiping column; the wiping column is cylindrical, and the part of the wiping column extends out of the ash groove to protrude out of the outer plane of the supporting plate; and each ash inlet is further provided with a scraping plate, and the top end of each scraping plate is in pressing contact with the wiping column, so that when the wiping column rotates, the scraping plates can hang down dust on the wiping column.

Description

Blackboard cleaning structure

Technical Field

The utility model relates to the field of teaching appliances, in particular to a blackboard cleaning structure.

Background

The existing blackboard has a large amount of chalk dust after being used, particularly chalk dust is left on the blackboard eraser after the blackboard is wiped, a large amount of powder is generated when the blackboard is wiped by the blackboard eraser, the wiping effect is also greatly reduced, a teacher is required to wipe for many times, the wiping efficiency is low, the teaching time is wasted, and the arm pain of the teacher is caused.

Disclosure of Invention

In order to solve the problems in the background art, the utility model adopts the following technical scheme: a blackboard cleaning structure comprises a supporting plate, a plurality of wiping columns and a detachable shell;

the detachable shell is detachably connected with the supporting plate, and an ash storage part is formed in the detachable shell;

a plurality of ash inlet grooves are formed in the support plate in a penetrating manner, and the bottom end of each ash inlet groove is communicated with the ash storage part through an ash inlet;

each ash inlet groove is internally provided with a wiping column, and each wiping column is rotatably arranged in the corresponding ash inlet groove through a first rotating shaft positioned in the center of the wiping column;

the wiping column is cylindrical, and the part of the wiping column extends out of the ash groove to protrude out of the outer plane of the supporting plate;

and each ash inlet is further provided with a scraping plate, and the top end of each scraping plate is in pressing contact with the wiping column, so that when the wiping column rotates, the scraping plates can hang down dust on the wiping column.

In some embodiments, each ash inlet is provided with a swinging plate, each swinging plate is rotatably arranged in the corresponding ash inlet through a second rotating shaft positioned at the center of the swinging plate, and each scraper is fixedly arranged in the upper middle part of the corresponding swinging plate;

two limit posts are fixedly arranged above each swing plate and symmetrically distributed on the left side and the right side above the corresponding swing plate for limiting the left-right swing range of the swing plates.

In some embodiments, when the wobble plate contacts a spacing post on either side, the wobble plate closes the ash inlet on that side and opens the ash inlet on the other side while the scraper is in a tangential position to the corresponding wiping post.

In some embodiments, in the support plate, one end or two ends of each wiping column are further provided with corresponding transmission areas, and the first rotating shaft and the second rotating shaft extend into the corresponding transmission areas;

a first gear, a second gear and a special-shaped gear are arranged in each transmission area;

the first gear is sleeved on the first rotating shaft, and the special-shaped gear is sleeved on the second rotating shaft;

the special-shaped gear is fan-shaped, the first gear is always meshed with the second gear, and the second gear can be meshed with or separated from the special-shaped gear;

and when the swinging plate is positioned at a position contacting with any one of the limiting columns, the corresponding special-shaped gear is just separated from the second gear.

In some embodiments, the wiping cylinder comprises an inner cylinder and an outer cotton sleeve.

In some embodiments, each of the first shafts is further configured with a damping structure for increasing the rotational resistance of the wiping pole.

In some embodiments, at least one end of the first rotating shaft is a hollow structure with a plurality of clamping grooves formed therein, and the damping structure is a push rod configured at a corresponding position;

both ends of the ejector rod are positioned in the clamping grooves of the first rotating shaft;

the ejector rod is a telescopic rod with a spring arranged in the middle, and a limiting sleeve fixedly connected with the supporting plate is sleeved in the middle of the ejector rod, so that the ejector rod does not rotate along with the first rotating shaft.

In some embodiments: the supporting plate is detachably connected with the detachable shell through a plurality of protruding structures arranged on the supporting plate and/or the detachable shell, and the protruding structures are made of elastic materials.

In some embodiments, three ash inlet grooves are formed in the supporting plate, and three wiping columns are correspondingly arranged on the supporting plate.

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

the blackboard cleaning structure provided by the utility model can better wipe the blackboard, and can scrape the chalk dust on the wiping column through the scraping plate, so that the chalk dust is collected into the detachable shell.

Drawings

FIG. 1 is a schematic view of the appearance of a blackboard cleaning structure according to the present utility model;

FIG. 2 is a cross-sectional view of a blackboard cleaning structure provided by the present utility model;

fig. 3 is a cross-sectional view of the blackboard cleaning structure provided by the utility model in a transmission area.

Reference numerals illustrate:

1. a support plate; 2. wiping the column; 3. a detachable shell; 4. an ash inlet groove; 5. a bump structure; 6. a first rotating shaft; 7. a limit column; 8. a wobble plate; 9. an ash inlet; 10. a second rotating shaft; 11. an ash storage part; 12. a scraper; 13. a special-shaped gear; 14. a second gear; 15. a transmission region; 16. a first gear; 17. a spring; 18. a push rod; 19. a clamping groove; 201. a column; 202. cotton sleeve.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the present utility model easy to understand, the following further describes how the present utility model is implemented with reference to the accompanying drawings and the detailed description.

Referring to fig. 1 and 2, the present utility model provides a blackboard cleaning structure including a support plate 1, a plurality of wiping poles 2, and a detachable case 3; the detachable shell 3 is detachably connected with the supporting plate 1, and an ash storage part 11 is formed in the detachable shell 3; the upper part of the supporting plate 1 is provided with a plurality of ash inlet grooves 4 in a penetrating way, and the bottom end of each ash inlet groove 4 is communicated with an ash storage part 11 through an ash inlet 9; each ash inlet groove 4 is internally provided with a wiping column 2, and each wiping column 2 is rotatably arranged in the corresponding ash inlet groove 4 through a first rotating shaft 6 positioned at the center of the wiping column 2; the wiping column 2 is cylindrical, and part of the wiping column 2 extends into the ash groove 4 to protrude out of the outer plane of the supporting plate 1; a scraper 12 is also installed at each ash inlet 9, and the top end of the scraper 12 is in pressing contact with the wiping pole 2, so that the scraper 12 can hang dust on the wiping pole 2 when the wiping pole 2 rotates.

Preferably, each ash inlet 9 is provided with a swinging plate 8, each swinging plate 8 is rotatably arranged in the corresponding ash inlet 9 through a second rotating shaft 10 positioned at the center of the swinging plate 8, and each scraper 12 is fixedly arranged at the upper middle part of the corresponding swinging plate 8; two limit posts 7 are fixedly arranged above each swing plate 8, and the two limit posts 7 are symmetrically distributed on the left side and the right side above the corresponding swing plate 8 and used for limiting the left-right swing range of the swing plate 8.

Preferably, when the swing plate 8 contacts with the limit post 7 on either side, the swing plate 8 closes the ash inlet 9 on that side and opens the ash inlet 9 on the other side, while the scraper 12 is in a tangential position to the corresponding wiping post 2.

Preferably, referring to fig. 3, in the support plate 1, one end or two ends of each wiping column 2 are further provided with a corresponding transmission area 15, and the first rotating shaft 6 and the second rotating shaft 10 extend into the corresponding transmission areas 15; a first gear 16, a second gear 14 and a special-shaped gear 13 are arranged in each transmission area 15; the first gear 16 is sleeved on the first rotating shaft 6, and the special-shaped gear 13 is sleeved on the second rotating shaft 10; the special-shaped gear 13 is fan-shaped, the first gear 16 is always meshed with the second gear 14, and the second gear 14 can be meshed with or separated from the special-shaped gear 13; and, when the wobble plate 8 is in a position of contact with any one of the limit posts 7, the corresponding profile gear 13 is just separated from the second gear 14.

As described with reference to fig. 2 and 3, it can be understood that, by such an arrangement, when the blackboard cleaning structure provided by the present utility model is used to wipe back and forth on a blackboard, the wiping pole 2 will rotate clockwise or counterclockwise, and the working principle is as follows when the wiping pole 2 rotates counterclockwise, for example:

the wiping column 2 drives the first gear 16 to rotate anticlockwise through the first rotating shaft 6, and the special-shaped gear 13 also rotates anticlockwise through the transmission of the second gear 14, so that the second rotating shaft 10 and the swinging plate 8 are driven to rotate anticlockwise, namely the right end of the swinging plate 8 can be tilted; until the right end of the swinging plate 8 contacts the right limit post 7, the swinging plate 8 and the special-shaped gear 13 cannot continue to rotate anticlockwise, the right end of the swinging plate 8 can block the right side of the ash inlet 9, the left side of the ash inlet 9 is in a communicated state, and the scraping plate 12 on the swinging plate 8 inclines leftwards and is tangential to the wiping post 2; meanwhile, the special-shaped gear 13 is just positioned at the separation position with the second gear 14, so that the special-shaped gear 13 can not stop the continuous rotation of the second gear 14, and if the special-shaped gear 13 and the swinging plate 8 slightly rotate clockwise, the second gear 14 can bring the special-shaped gear 13 back to the separation position as long as the wiping column 2 rotates anticlockwise, so that the swinging plate 8 is kept at the contact position with the right limit column 7; then, the wiping column 2 continues to rotate anticlockwise, and the chalk dust on the blackboard is driven to rotate, and the scraping plate 12 is tangential to the wiping column 2 towards the left, so that the chalk dust on the wiping column 2 can be well shoveled down and falls into the dust storage part 11 through the left side of the dust inlet 9, and further dust collection is realized; when the wiping column 2 stops rotating anticlockwise, the special-shaped gear 13 and the swinging plate 8 rotate slightly clockwise under the action of gravity and self balance, so that the special-shaped gear 13 is meshed with the second gear 14 again, and subsequent control is not affected.

It will be appreciated that the principle of clockwise rotation of the wiping pole 2 is the same as that of counterclockwise rotation, but the direction is opposite, and will not be described again here.

Therefore, when the blackboard cleaning structure provided by the utility model is used for cleaning the blackboard in a reciprocating manner, the scraping plate 12 of the blackboard cleaning structure can scrape chalk dust on the wiping column 2 and collect the chalk dust into the detachable shell 3 no matter the wiping column 2 rotates clockwise or anticlockwise, so that the efficiency of wiping the chalk writing can be improved and the scattering of dust can be reduced.

Preferably, the wiping cylinder 2 comprises an inner cylinder 201 and an outer cotton sleeve 202.

Preferably, each first shaft 6 is further provided with a damping structure for increasing the rotational resistance of the wiping pole 2. By arranging the damping structure, the wiping column 2 is ensured not to roll on the blackboard completely, but to slide relatively, so that the wiping efficiency and the wiping effect of blackboard chalk writing can be improved.

In a specific embodiment, referring to fig. 3, at least one end of the first rotating shaft 6 is a hollow structure with a plurality of clamping grooves 19 formed therein, and the damping structure is a push rod 18 configured at a corresponding position; both ends of the ejector rod 18 are positioned in the clamping grooves 19 of the first rotating shaft 6; the ejector rod 18 is a telescopic rod with a spring 17 arranged in the middle, and a limiting sleeve fixedly connected with the supporting plate 1 is sleeved in the middle of the ejector rod 18, so that the ejector rod 18 does not rotate along with the first rotating shaft 6.

It will be appreciated that in this embodiment, by providing the retractable ejector 18 with the spring 17 and cooperating with the hollow structure with the clamping groove 19, the rotation resistance of the wiping pole 2 can be increased, and the elastic force of the spring 17 needs to be continuously overcome when the wiping pole rotates, so that the ejector 18 slides from one clamping groove 19 to the next clamping groove 19. Of course, the above is only one specific embodiment of the damping structure, and in other embodiments, other types of damping structures may be provided as long as they function to increase the rotational resistance of the wiping pole 2.

In addition, referring to fig. 2, the support plate 1 and the detachable case 3 are detachably coupled by a plurality of protrusion structures 5 provided on the support plate 1 and/or the detachable case 3, and the protrusion structures 5 are made of an elastic material. By such an arrangement, the connection or disconnection between the support plate 1 and the detachable housing 3 can be achieved as long as the elastic force and the friction force of the protruding structure 5 are overcome. The detachable case 3 is opened as needed to clean the dust storage part 11 of chalk dust.

In addition, in the illustrated embodiment, three ash inlet grooves 4 are formed in the supporting plate 1, and three wiping columns 2 are correspondingly arranged; in other embodiments, other suitable numbers are possible.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.

Claims

1. The blackboard cleaning structure is characterized by comprising a supporting plate (1), a plurality of wiping columns (2) and a detachable shell (3);

the detachable shell (3) is detachably connected with the supporting plate (1), and an ash storage part (11) is formed in the detachable shell (3);

a plurality of ash inlet grooves (4) are formed in the upper portion of the supporting plate (1) in a penetrating mode, and the bottom end of each ash inlet groove (4) is communicated with the ash storage part (11) through an ash inlet (9);

each ash inlet groove (4) is internally provided with a wiping column (2), and each wiping column (2) is rotatably arranged in the corresponding ash inlet groove (4) through a first rotating shaft (6) positioned at the center of the wiping column;

the wiping column (2) is cylindrical, and part of the wiping column (2) extends out of the ash groove (4) to protrude out of the outer plane of the supporting plate (1);

each ash inlet (9) is further provided with a scraping plate (12), and the top end of the scraping plate (12) is in pressing contact with the wiping column (2), so that when the wiping column (2) rotates, the scraping plate (12) can hang down dust on the wiping column (2).

2. A blackboard cleaning structure according to claim 1, characterized in that, a swinging plate (8) is mounted at each dust inlet (9), each swinging plate (8) is rotatably mounted in the corresponding dust inlet (9) through a second rotating shaft (10) at the center, and each scraper (12) is fixedly mounted in the upper middle part of the corresponding swinging plate (8);

two limit posts (7) are fixedly arranged above each swing plate (8), and the two limit posts (7) are symmetrically distributed on the left side and the right side above the corresponding swing plate (8) and used for limiting the left-right swing range of the swing plate (8).

3. A blackboard cleaning structure according to claim 2, characterized in that, when the rocking plate (8) is in contact with the limit posts (7) on either side, the rocking plate (8) closes the dust inlet (9) on that side and opens the dust inlet (9) on the other side, while the scraper (12) is in a tangential position with respect to the corresponding wiping post (2).

4. A blackboard cleaning structure according to claim 3, characterized in that, inside the supporting plate (1), one or both ends of each wiping column (2) are also provided with corresponding transmission areas (15), and the first rotating shaft (6) and the second rotating shaft (10) extend into the corresponding transmission areas (15);

a first gear (16), a second gear (14) and a special-shaped gear (13) are arranged in each transmission area (15);

the first gear (16) is sleeved on the first rotating shaft (6), and the special-shaped gear (13) is sleeved on the second rotating shaft (10);

the special-shaped gear (13) is fan-shaped, the first gear (16) is always meshed with the second gear (14), and the second gear (14) can be meshed with or separated from the special-shaped gear (13);

when the swinging plate (8) is positioned at a position contacted with any limit post (7), the corresponding special-shaped gear (13) is just separated from the second gear (14).

5. A blackboard cleaning structure according to claim 1, characterized in that the wiping pole (2) comprises an inner pole (201) and an outer cotton sleeve (202).

6. A blackboard cleaning structure according to claim 1, characterized in that each of the first shafts (6) is further provided with a damping structure for increasing the rotational resistance of the wiping pole (2).

7. A blackboard cleaning structure according to claim 6, characterized in that at least one end of the first rotating shaft (6) is a hollow structure with a plurality of clamping grooves (19) formed therein, and the damping structure is a push rod (18) arranged at a corresponding position;

both ends of the ejector rod (18) are positioned in the clamping grooves (19) of the first rotating shaft (6);

the ejector rod (18) is a telescopic rod with a spring (17) arranged in the middle, and a limiting sleeve fixedly connected with the supporting plate (1) is sleeved in the middle of the ejector rod (18), so that the ejector rod (18) does not rotate along with the first rotating shaft (6).

8. A blackboard cleaning structure according to claim 1, characterized in that the support plate (1) and the detachable shell (3) are detachably connected by a plurality of protruding structures (5) provided on the support plate (1) and/or the detachable shell (3), the protruding structures (5) being made of an elastic material.

9. The blackboard cleaning structure according to claim 1, characterized in that the supporting plate (1) is provided with three dust inlet grooves (4) and three wiping posts (2) correspondingly.