CN211869015U - Blackboard for Chinese teaching - Google Patents
Blackboard for Chinese teaching Download PDFInfo
- Publication number
- CN211869015U CN211869015U CN202020375203.XU CN202020375203U CN211869015U CN 211869015 U CN211869015 U CN 211869015U CN 202020375203 U CN202020375203 U CN 202020375203U CN 211869015 U CN211869015 U CN 211869015U
- Authority
- CN
- China
- Prior art keywords
- blackboard
- blackboard eraser
- eraser
- dust
- connecting rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000000428 dust Substances 0.000 claims abstract description 50
- 238000001914 filtration Methods 0.000 claims description 4
- 230000000875 corresponding Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 7
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 3
- 230000001808 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
Abstract
The utility model discloses a blackboard for chinese teaching, including blackboard body, blackboard body top is equipped with the connecting rod, one side of blackboard body is equipped with the dust removal case, the guide slot has all been opened to blackboard body's both sides frame inboard, it is equipped with the blackboard eraser to slide between the guide slot of both sides, be equipped with the spring of being no less than one between blackboard eraser and the connecting rod, the casing of blackboard eraser is the empty casing, the blackboard eraser lower extreme prolongs to be equipped with the dust absorption mouth of being no less than one, the dust removal incasement is equipped with the air exhauster of the empty casing switch-on of air inlet end and blackboard eraser, the air-out end of air exhauster is connected with the dust bag, be equipped with the gas vent on a side of dust removal case, the middle part of. Compared with the prior art, the utility model the advantage lie in: the efficiency of wiping the blackboard is improved to improve teaching process and classroom efficiency, have the dust removal function simultaneously, guarantee the sanitation in classroom and the healthy of teacher and student.
Description
Technical Field
The utility model relates to a blackboard technical field specifically indicates a blackboard is used in chinese teaching.
Background
In present chinese teaching, the blackboard in the classroom is indispensable, many words will be written on the blackboard in chinese teaching usually, although present blackboard pattern is more, can write more in limited area, but when the blackboard is full, just need the mr to fall with the blackboard eraser difference little by little and writing, so not only delay the teaching process, influence efficiency of giving lessons, simultaneously to teacher and student that use there is the dust pen, can produce the dust of chalk when erasing the blackboard, influence the environment of giving lessons in classroom to and student and teacher's healthy.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome above technical defect, provide a blackboard for chinese teaching, can improve the efficiency of wiping the blackboard to improve teaching process and classroom efficiency, have dust removal function simultaneously, guarantee the sanitation in classroom and teacher and student's healthy.
In order to solve the technical problem, the utility model provides a technical scheme does: a blackboard for Chinese teaching comprises a blackboard body fixed on a wall, wherein a connecting rod fixed on the wall is arranged above the blackboard body, a dust removing box fixed on the wall is arranged on one side of the blackboard body, guide grooves are formed in the inner sides of frames on the two sides of the blackboard body along the height direction, a blackboard eraser arranged in parallel with the connecting rod is arranged between the guide grooves in a sliding manner, at least one spring is arranged between the blackboard eraser and the connecting rod, a shell of the blackboard eraser is an empty shell, a dust suction port which is not less than one and communicated with the empty shell is formed in the extension direction of the lower end of the blackboard eraser, an air exhaust fan communicated with the empty shell of the blackboard eraser is arranged in the dust removing box, the air outlet end of the air exhaust fan is connected with a dust filtering bag, an air outlet is formed in one side face of the dust removing box, and the handle is provided with a control switch for controlling the starting and stopping of the exhaust fan.
Compared with the prior art, the utility model the advantage lie in: when the blackboard eraser is used, when more characters are written on the blackboard and the blackboard needs to be erased, the exhaust fan can be turned on through the control switch on the handle, the longer blackboard eraser at the upper end of the blackboard body is pulled down, after the blackboard eraser moves up and down along the guide grooves at two sides for several times, the characters on the blackboard are completely erased at one time, the operation is convenient and fast, the time is saved, the efficiency of erasing the blackboard is improved, and the teaching process and the classroom efficiency are improved; meanwhile, in the process of erasing the blackboard eraser, the plurality of dust suction ports move up and down along with the blackboard eraser, the generated dust is sucked into the dust collection box under the action of the exhaust fan and is discharged from the exhaust port after being filtered by the dust filter bag, the dust brought by the blackboard eraser is effectively removed, and the environmental sanitation of classrooms and the body health of teachers and students are ensured.
As the improvement, the spring is equipped with threely, and is located the middle part and the both ends of blackboard eraser up end respectively, it has the recess corresponding with the spring to open on the lower terminal surface of connecting rod, the upper end rigid coupling of spring is in the upper end of recess, the lower extreme rigid coupling of spring is on the up end of blackboard eraser, and the even arrangement of three spring guarantees that the blackboard eraser atress is comparatively even at the in-process that reciprocates, is difficult to the slope, convenient control, sets up the recess on the connecting rod simultaneously, can shorten the interval between connecting rod and the blackboard body, reduces the space that occupies.
As an improvement, the number of the dust suction ports is three, the dust suction ports are respectively positioned in the middle and at two ends of the lower end face of the blackboard eraser, and the dust suction ports are simultaneously arranged, so that the dust suction coverage area is wider, and the dust suction efficiency is improved.
As an improvement, the blackboard eraser is horizontally arranged, two ends of the blackboard eraser extend to the positions of two side edges of the blackboard body, the two ends of the blackboard eraser are provided with idler wheels positioned in the guide grooves, and the blackboard eraser moves up and down along the guide grooves on the two sides through the idler wheels, so that friction force is reduced, and the blackboard eraser can move up and down easily.
As an improvement, the exhaust fan is communicated with one end, close to the dust removal box, of the hollow shell of the blackboard eraser through a telescopic hose, and the telescopic hose does not influence the requirement of the blackboard eraser for the length of the connecting pipe due to the fact that the blackboard eraser moves up and down.
Drawings
Fig. 1 is a schematic structural view of the blackboard for Chinese teaching of the present invention.
As shown in the figure: 1. blackboard body, 2, connecting rod, 3, dust removal case, 4, blackboard eraser, 5, spring, 6, dust absorption mouth, 7, guide slot, 8, gyro wheel, 9, air exhauster, 10, dust filtration bag, 11, gas vent, 12, recess, 13, handle, 14, control switch.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
A blackboard for Chinese teaching comprises a blackboard body 1 fixed on a wall, wherein a connecting rod 2 fixed on the wall is arranged above the blackboard body 1, a dust removing box 3 fixed on the wall is arranged on one side of the blackboard body 1, guide grooves 7 are formed in the inner sides of two side frames of the blackboard body 1 along the height direction, blackboard erasers 4 arranged in parallel with the connecting rod 2 are arranged between the guide grooves 7 on two sides in a sliding mode, one side of each blackboard eraser 4 with a hairbrush is tightly attached to the writing surface of the blackboard body, at least one spring 5 is arranged between each blackboard eraser 4 and the connecting rod 2, a shell of each blackboard eraser 4 is an empty shell, a dust suction opening 6 which is not less than one and communicated with the empty shell is arranged in the extension degree direction of the lower end of each blackboard eraser 4, an air exhauster 9 communicated with the empty shell of each blackboard eraser 4 is arranged in the dust removing box 3, be equipped with gas vent 11 on the side of dust removal case 3, the middle part of terminal surface is equipped with handle 13 before the empty casing of blackboard eraser 4, be equipped with the control switch 14 that control air exhauster 9 opened and stops on the handle 13, the connecting wire of control switch 14 and air exhauster 9 power can be washed the inside of the empty casing of blackboard eraser 4 and pass, also can pass through from the outside of blackboard eraser 4 under the condition that does not influence the normal work of blackboard eraser, and connecting rod 2 and dust removal case 3 all fix on the wall in classroom through the inflation screw simultaneously.
The blackboard eraser is characterized in that the number of the springs 5 is three, the springs are respectively positioned in the middle and at two ends of the upper end face of the blackboard eraser 4, grooves 12 corresponding to the springs 5 are formed in the lower end face of the connecting rod 2, the upper ends of the springs 5 are fixedly connected to the upper ends of the grooves 12, the lower ends of the springs 5 are fixedly connected to the upper end face of the blackboard eraser 4, the upward tensile force of the three springs 5 is slightly larger than the gravity of the blackboard eraser 4 in a natural state, and therefore the blackboard eraser 4 is pulled downwards in a labor-saving.
Dust absorption mouth 6 is equipped with threely, and is located middle part and both ends of blackboard eraser 4 lower terminal surface respectively, and gas vent 11 is located dust removal case 3 and keeps away from the side of blackboard body 1 on, guarantees that the combustion gas blows to the outside.
The blackboard eraser 4 is horizontally arranged, two ends of the blackboard eraser 4 extend to the positions of two side edges of the blackboard body 1, and two ends of the blackboard eraser 4 are provided with idler wheels 8 positioned in the guide grooves 7.
The exhaust fan 9 is communicated with one end, close to the dust removal box 3, of an empty shell of the blackboard eraser 4 through a telescopic hose, a threaded hose connector is arranged on the empty shell of the blackboard eraser 4, and the telescopic hose is connected with the empty shell of the blackboard eraser 4, the exhaust fan 9 and the dust filtering bag 10 through a connecting joint.
When the utility model is implemented specifically, when in use, the exhaust fan is electrically connected with an appearance power supply, when more characters are written on the blackboard and the blackboard needs to be erased, the exhaust fan can be opened through a control switch on the handle, meanwhile, the longer blackboard eraser at the upper end of the blackboard body is pulled down, after the two ends of the blackboard eraser move up and down along the guide grooves at the two sides for several times through the roller wheels, the characters on the blackboard are all erased at one time, the operation is convenient and fast, the time is saved, the efficiency of erasing the blackboard is improved, and therefore, the teaching progress and the classroom efficiency; meanwhile, in the process of erasing the blackboard eraser, the three dust suction ports move up and down along with the blackboard eraser, the generated dust is sucked into the dust collection box under the action of the exhaust fan and is discharged from the exhaust port after being filtered by the dust filter bag, the dust brought by erasing the blackboard is effectively removed, the environmental sanitation of a classroom and the body health of teachers and students are guaranteed, meanwhile, after the blackboard eraser is well, the exhaust fan is closed through a control switch, then the blackboard eraser is pushed upwards slightly by hands, and under the action of the three springs, the blackboard eraser returns to the upper end position of the blackboard body, so that the normal use of the blackboard by teachers is not influenced.
The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.
Claims (5)
1. The utility model provides a blackboard for chinese teaching, is including fixing blackboard body (1) on the wall, its characterized in that: the blackboard eraser is characterized in that a connecting rod (2) fixed on a wall is arranged above the blackboard body (1), a dust removing box (3) fixed on the wall is arranged on one side of the blackboard body (1), guide grooves (7) are formed in the inner sides of frames on two sides of the blackboard body (1) along the height direction, two sides of each guide groove (7) are slidably arranged with a blackboard eraser (4) which is arranged in parallel with the connecting rod (2), at least one spring (5) is arranged between each blackboard eraser (4) and the connecting rod (2), a shell of each blackboard eraser (4) is an empty shell, a dust suction opening (6) which is not less than one and communicated with the empty shell is arranged in the extension direction of the lower end of each blackboard eraser (4), an air exhaust fan (9) communicated with the empty shell of each blackboard eraser (4) is arranged in the dust removing box (3), and a dust filtering bag (10), be equipped with gas vent (11) on the side of dust removal case (3), the middle part of terminal surface is equipped with handle (13) before the empty casing of blackboard eraser (4), be equipped with control switch (14) that control air exhauster (9) opened and stop on handle (13).
2. The blackboard for teaching chinese language according to claim 1, wherein: the blackboard eraser is characterized in that the number of the springs (5) is three, the springs are respectively located in the middle and at two ends of the upper end face of the blackboard eraser (4), grooves (12) corresponding to the springs (5) are formed in the lower end face of the connecting rod (2), the upper ends of the springs (5) are fixedly connected to the upper ends of the grooves (12), and the lower ends of the springs (5) are fixedly connected to the upper end face of the blackboard eraser (4).
3. The blackboard for teaching chinese language according to claim 1, wherein: the number of the dust suction ports (6) is three, and the three dust suction ports are respectively positioned in the middle and at two ends of the lower end face of the blackboard eraser (4).
4. The blackboard for teaching chinese language according to claim 1, wherein: the blackboard eraser is characterized in that the blackboard eraser (4) is horizontally arranged, two ends of the blackboard eraser extend to the positions of two side edges of the blackboard body (1), and two ends of the blackboard eraser (4) are provided with rollers (8) located in the guide grooves (7).
5. The blackboard for teaching chinese language according to claim 1, wherein: the exhaust fan (9) is communicated with one end, close to the dust removal box (3), of the hollow shell of the blackboard eraser (4) through a telescopic hose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020375203.XU CN211869015U (en) | 2020-03-23 | 2020-03-23 | Blackboard for Chinese teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020375203.XU CN211869015U (en) | 2020-03-23 | 2020-03-23 | Blackboard for Chinese teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211869015U true CN211869015U (en) | 2020-11-06 |
Family
ID=73257087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020375203.XU Expired - Fee Related CN211869015U (en) | 2020-03-23 | 2020-03-23 | Blackboard for Chinese teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211869015U (en) |
-
2020
- 2020-03-23 CN CN202020375203.XU patent/CN211869015U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201106 Termination date: 20210323 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |