CN215792878U

CN215792878U - Blackboard eraser with self-cleaning function

Info

Publication number: CN215792878U
Application number: CN202122117808.6U
Authority: CN
Inventors: 陆婷慧; 韦鹏飞; 钱岑
Original assignee: Jinling Institute of Technology
Current assignee: Jinling Institute of Technology
Priority date: 2021-09-03
Filing date: 2021-09-03
Publication date: 2022-02-11
Anticipated expiration: 2031-09-03

Abstract

The utility model discloses a blackboard eraser with a self-cleaning function, which belongs to the technical field of multifunctional teaching aids and comprises two opposite mounting plates, wherein the bottoms of the two mounting plates are respectively provided with a vertical chute, a connecting sliding plate capable of sliding up and down in the chute is arranged in each chute, a spring is arranged between the upper end of each connecting sliding plate and the corresponding chute, the lower end of each connecting sliding plate extends out of the notch of the corresponding chute, a wiping body box with an opening at the upper end and a cleaning cavity is fixedly arranged between the two connecting sliding plates, and a wiping body cleaning device is arranged in the cleaning cavity; two opposite wiping bodies are rotatably arranged between one sides of the two mounting plates, and each wiping body is provided with two opposite wiping surfaces; an angle adjusting device is arranged on the outer side of one mounting plate, and the two wiping bodies can be controlled to synchronously rotate through the angle adjusting device; the present invention has the advantage that both the use and cleaning states can be performed simultaneously.

Description

Blackboard eraser with self-cleaning function

Technical Field

The utility model relates to the technical field of multifunctional teaching aids, in particular to a blackboard eraser with a self-cleaning function.

Background

Blackboard erasers are generally made using items such as lint sponges. In the process of using the blackboard eraser, the flannelette rubs against the blackboard, so that chalk dust left on the blackboard is erased, and the blackboard eraser plays a role in erasing the blackboard. In the practical teaching activities, the blackboard eraser is used for several times in a class, and then the blackboard eraser is always shot out of a classroom to clean the dirty blackboard eraser. This not only affects the efficiency of the class but also causes the person who beats the chalk eraser to inhale a certain amount of chalk dust.

The prior blackboard eraser mainly comprises a wiping box and a single wiping body, and in order to solve the problem that the prior blackboard eraser cannot be cleaned in time, a Chinese patent with the publication number of CN113263855A provides a blackboard eraser (auxiliary teaching equipment) for removing dust by vibration, and dust is collected by a dust collecting box; although the blackboard eraser can also play a role in cleaning, the blackboard eraser cannot be used when vibration is used for removing dust, so that the blackboard eraser is low in use efficiency, and the comfort in use can also be influenced to a certain degree for a user.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides the blackboard eraser with the self-cleaning function, and the blackboard eraser has the advantages that the using state and the cleaning state can be simultaneously carried out, so that the using efficiency of the blackboard eraser is improved.

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

a blackboard eraser with a self-cleaning function comprises two opposite mounting plates, wherein vertical sliding grooves are formed in the bottoms of the two mounting plates, a connecting sliding plate capable of sliding up and down in the sliding grooves is arranged in each sliding groove, a spring is arranged between the upper end of each connecting sliding plate and the corresponding sliding groove, the lower end of each connecting sliding plate extends out of a groove opening of the corresponding sliding groove, a wiping body box with an opening at the upper end and a cleaning cavity is fixedly arranged between the two connecting sliding plates, and a wiping body cleaning device is arranged in the cleaning cavity;

two opposite wiping bodies are rotatably arranged between one sides of the two mounting plates, and each wiping body is provided with two opposite wiping surfaces; an angle adjusting device is arranged on the outer side of one of the mounting plates, the two wiping bodies can be controlled to synchronously rotate through the angle adjusting device, and the position locking is kept when one wiping surface of each wiping body faces to a cleaning cavity in the wiping body box; the left side and the right side of each wiping body are provided with arc-shaped contact parts; when the position of the wiping body is locked, the wiping body box is pressed upwards, so that the outer arc-shaped contact parts of the two wiping bodies are pressed and fixed on the inner side of the wiping body box, and the wiping surface entering the cleaning cavity is contacted with the wiping body cleaning device.

In order to optimize the technical scheme, the specific measures adopted further comprise:

furthermore, each wiping body is connected between the two mounting plates through a rotating shaft I; angle adjusting device is including setting up respectively in the synchronizing gear I of I one end of two pivots, two synchronizing gear I all is located the outside of right-hand member portion mounting panel, right-hand member portion the outside of mounting panel still is connected one through pivot II and is equipped with a fixed casing with two I intermeshing of synchronizing gear II of synchronizing gear, two the outside of synchronizing gear I and adjusting gear II is equipped with a fixed casing, and the one end of pivot II stretches out fixed casing and stretch out the end outside and be equipped with the knob, be equipped with the elastic buckle of two symmetries on the knob, be equipped with two horizontal fixed slots on the fixed casing, through two the spacing horizontal fixed slot that is fixed in corresponds of elastic buckle to the realization is with two position locking of cleaning the body.

Further, every it all adopts the stereoplasm rubber that has certain elasticity to make to clean the arc contact site on the body, all be equipped with on two inside walls of cleaning the body box with arc contact site complex sunken fixed part, all be equipped with the friction bump on arc contact site and the sunken fixed part, when the extrusion of arc contact site gets into in the cleaning the body box, it keeps fixed through frictional force between arc contact site and the sunken fixed part.

Furthermore, the cleaning device for the wiping body comprises guide strips which are respectively arranged on two inner side walls of the wiping body box, each guide strip is connected with a guide seat in a sliding mode, a cleaning roller made of absorbent sponge is connected between one sides of the two guide seats through a rotating shaft III, and a movement adjusting component for driving the two guide seats and the cleaning roller to move left and right is further arranged in the wiping body box; a cleaning liquid box is fixedly arranged on the outer side of the wiping body box, a liquid inlet is formed in one side of the cleaning liquid box, and a liquid outlet communicated with a cleaning cavity of the wiping body box is formed in the other side of the cleaning liquid box; the liquid outlet is fixedly provided with a conical sealing pin through a connecting spring, and a conical end of the sealing pin is exposed out of the cleaning cavity; when the cleaning roller presses the end head of the sealing pin, the cleaning liquid in the wiping body box can flow out through the liquid outlet and is absorbed by the cleaning roller.

Furthermore, the movable adjusting assembly comprises a movable screw rod arranged on the upper side of one of the guide strips in parallel, a nut seat matched with the movable screw rod is arranged on the movable screw rod, and the nut seat is fixedly connected with the corresponding guide seat; when the movable screw rotates, the nut seat can be driven to move left and right, and then the two guide seats and the cleaning roller are driven to move left and right; and a driving device for driving the movable screw rod to rotate is further arranged on the outer side of the wiping body box, and the driving device adopts a miniature bidirectional motor.

Furthermore, the rotating shaft III is a U-shaped crankshaft, the cleaning roller is sleeved in the U-shaped concave part of the crankshaft, and one ends of the crankshaft, which are opposite to the two guide seats respectively, are provided with torsion springs; when the two torsion springs are in a natural state, the whole U-shaped concave part inclines to a certain angle towards the upper opening of the wiping body box.

The utility model has the beneficial effects that:

1. according to the utility model, two opposite wiping bodies are rotatably arranged between the two mounting plates, and each wiping body is provided with two wiping surfaces; the alternate use of the wiping surfaces at two sides is realized by arranging the angle adjusting device comprising the gear, the knob, the elastic buckle and the fixing groove, wherein when one wiping surface is in a use state, the other wiping surface is in a cleaning state; therefore, the use efficiency of the blackboard eraser can be effectively improved, and the blackboard is ensured to be in a clean state all the time.

2. According to the utility model, through the matching of the cleaning liquid box, the cleaning roller made of water-absorbing sponge and the sealing pin, when the cleaning roller moves to the position above the sealing pin, the cleaning liquid in the box can be absorbed by pressing the sealing pin, so that the cleaning liquid can be prevented from leaking, and meanwhile, the cleaning requirement can be effectively met.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic elevation view of the present invention;

FIG. 3 is a side view of the present invention.

The label names in the figure: the cleaning device comprises a mounting plate 1, a wiping body 2, an arc contact part 21, a sliding groove 3, a synchronous gear I40, an adjusting gear II 41, a fixed shell 42, a knob 43, an elastic buckle 44, a wiping body box 5, a cleaning cavity 51, a connecting sliding plate 6, a sliding groove 7, a spring 8, a guide seat 9, a guide strip 10, a moving screw rod 11, a driving device 12, a crankshaft 13, a torsion spring 14, a cleaning roller 15, a cleaning liquid box 17, a liquid inlet 18 and a sealing pin 19.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

It should be noted that the terms "upper", "lower", "left", "right", "front", "back", etc. used in the present invention are for clarity of description only, and are not intended to limit the scope of the utility model, and the relative relationship between the terms and the terms is not limited by the scope of the utility model.

The first embodiment:

referring to fig. 1 to 3, the blackboard eraser with a self-cleaning function of the present embodiment includes two opposite mounting plates 1, the bottoms of the two mounting plates 1 are respectively provided with a vertical chute 7, a connecting sliding plate 6 capable of sliding up and down in the chute 7 is arranged in each chute 7, a spring 8 is arranged between the upper end of each connecting sliding plate 6 and the corresponding chute 7, the lower end of each connecting sliding plate 6 extends out of the notch of the corresponding chute 7, a wiping body box 5 with an opening at the upper end and a cleaning cavity 51 is fixedly arranged between the two connecting sliding plates 6, and a wiping body cleaning device is arranged in the cleaning cavity 51; two opposite wiping bodies 2 are rotatably arranged between one sides of the two mounting plates 1, and each wiping body 2 is provided with two opposite wiping surfaces; the outer side of one of the mounting plates 1 is provided with an angle adjusting device, by which the two wiping bodies 2 can be controlled to rotate synchronously and the position is kept locked when one of the wiping surfaces of each wiping body 2 faces the cleaning cavity 51 in the wiping body box 5; the left side and the right side of each wiping body 2 are provided with arc-shaped contact parts 21, when the wiping body 2 is locked, the wiping body box 5 is pressed upwards, so that the outer arc-shaped contact parts 21 of the two wiping bodies 2 are extruded and fixed on the inner side of the wiping body box 5, and the wiping surface entering the cleaning cavity 51 is contacted with the wiping body cleaning device.

When in use, the two wiping surfaces on the same side of the two wiping bodies 2 face the blackboard to wipe dust on the blackboard; the two wiping surfaces on the other side of the two wiping bodies 2 are located in the cleaning cavity 51 at this time, and the wiping surfaces facing the cleaning cavity 51 are cleaned by the wiping body cleaning device; when the wiping surface of the wiping blackboard is stained with more dust, the wiping body box 5 is firstly taken down from the wiping body, at the moment, the two wiping bodies 2 are rotated through the angle adjusting device, and the positions of the wiping surfaces at the two sides are changed; continuously wiping the blackboard by using the cleaned wiping surface, wherein the used wiping surface faces to the cleaning cavity 51, presses the wiping body box 5 to clamp and fix the arc-shaped contact parts 21 of the two wiping bodies again, and cleans the wiping surface contaminated by dust by using the wiping body cleaning device; and circulating in turn.

In the embodiment, each wiping body 2 is connected between the two mounting plates 1 through a rotating shaft I; angle adjusting device is including setting up respectively in the I40 of the synchronizing gear of I one end of two pivots, two I40 of synchronizing gear all are located the outside of right-hand member mounting panel 1, the outside of right-hand member mounting panel 1 is still connected one through pivot II and is equipped with a fixed casing 42 with two I40 of synchronizing gear engaged with adjusting gear II 41, the outside of two I40 of synchronizing gear and adjusting gear II 41 is equipped with a fixed casing 42, the one end of pivot II is stretched out fixed casing 42 and is stretched out the end outside and be equipped with knob 43, be equipped with the elastic buckle 44 of two symmetries on the knob 43, be equipped with two horizontal fixed slots on fixed casing 42, be fixed in the horizontal fixed slot that corresponds through two elastic buckle 44 spacing, thereby realize cleaning two position locking of body 2.

Wherein, every arc contact site 21 of cleaning on the body 2 all adopts the hard rubber who has certain elasticity to make, all be equipped with on two inside walls of cleaning body box 5 with arc contact site 21 matched with sunken fixed part, all be equipped with the friction bump on arc contact site 21 and the sunken fixed part, when arc contact site 21 extrusion gets into in the cleaning body box 5, keep fixed through frictional force between arc contact site 21 and the sunken fixed part.

In this embodiment, the cleaning device for the wiping body comprises guide bars 10 respectively arranged on two inner side walls of a wiping body box 5, each guide bar 10 is connected with a guide seat 9 in a sliding manner, a cleaning roller 15 made of absorbent sponge is connected between one sides of the two guide seats 9 through a rotating shaft III, and a movement adjusting component for driving the two guide seats 9 and the cleaning roller 15 to move left and right is further arranged in the wiping body box 5; a cleaning liquid box 17 is fixedly arranged on the outer side of the wiping body box 5, a liquid inlet 18 is arranged on one side of the cleaning liquid box 17, a liquid outlet communicated with a cleaning cavity 51 of the wiping body box 5 is arranged on the other side of the cleaning liquid box 17, a conical sealing pin 19 is fixedly arranged on the liquid outlet through a connecting spring, and a conical end of the sealing pin 19 is exposed in the cleaning cavity 51; when the cleaning roller 15 presses against the end of the sealing pin 19, the cleaning liquid in the wiper box 5 can flow out through the liquid outlet and be absorbed by the cleaning roller 15.

The movable adjusting assembly comprises a movable screw rod 11 arranged on the upper side of one of the guide strips 10 in parallel, a nut seat matched with the movable screw rod 11 is arranged on the movable screw rod 11, and the nut seat is fixedly connected with the corresponding guide seat 9; when the movable screw 11 rotates, the nut seat can be driven to move left and right, and then the two guide seats 9 and the cleaning roller 15 are driven to move left and right; the outside of the wiping body box 5 is also provided with a driving device 12 for driving the movable screw 11 to rotate, and the driving device 12 adopts a miniature bidirectional motor.

The rotating shaft III is a U-shaped crankshaft 13, the cleaning roller 15 is sleeved in the U-shaped concave part of the crankshaft 13, and one ends of the crankshaft 13, which are respectively opposite to the two guide seats 9, are provided with torsion springs 14; when both torsion springs 14 are in a natural state, the "U" -shaped recess is entirely inclined at an angle toward the upper opening of the wiper body case 5.

When in use, when the wiping body box 5 is pressed upwards and the arc-shaped contact parts at the outer sides of the two wiping bodies 2 enter the wiping body box 5; at this time, the cleaning roller 15 can be kept in close contact with the wiping surfaces of the two wiping bodies 2 under the action of the torsion spring 14, and the cleaning effect on the corresponding wiping surfaces can be better.

The using process of the utility model is as follows:

firstly, before use, cleaning solution is injected into the cleaning solution box 17 through the liquid inlet 18, and the liquid inlet 18 is sealed; the two wiping bodies 2 are fixed through the arc-shaped contact part by holding the outside of the wiping body box 5 by hands; at this time, one wiping surface of the two wiping bodies 2 is aligned with the blackboard for wiping; the wiping surface on the other side is positioned in the cleaning cavity 51 of the wiping body box 5, at this time, if the corresponding wiping surface needs to be cleaned, the miniature bidirectional motor is started, the cleaning roller 15 is driven to move left and right through the guide seat to clean the wiping surface, the cleaning roller and the wiping surface are kept in close contact under the action of the torsion spring, and the cleaning effect can be guaranteed.

When the wiping surface of the side facing the blackboard is stained with too much dust, the two elastic buckles 44 are pressed and the knob 43 is rotated to change the positions of the wiping surfaces of the two sides; at this time, the blackboard can be continuously wiped by using the relatively clean wiping surface, and the wiping surface on the other side enters the cleaning cavity 51 for cleaning, so that the blackboard can be recycled for multiple times until the cleaning solution is used up.

The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may be made by those skilled in the art without departing from the principle of the utility model.

Claims

1. The blackboard eraser with the self-cleaning function is characterized by comprising two opposite mounting plates (1), wherein the bottoms of the two mounting plates (1) are respectively provided with a vertical sliding chute (7), each sliding chute (7) is internally provided with a connecting sliding plate (6) capable of sliding up and down in the sliding chute (7), a spring (8) is arranged between the upper end of each connecting sliding plate (6) and the corresponding sliding chute (7), the lower end of each connecting sliding plate (6) extends out of a notch of the corresponding sliding chute (7), a wiping body box (5) with an opening at the upper end and a cleaning cavity (51) is fixedly arranged between the two connecting sliding plates (6), and a wiping body cleaning device is arranged in the cleaning cavity (51);

two opposite wiping bodies (2) are rotatably arranged between one sides of the two mounting plates (1), and each wiping body (2) is provided with two opposite wiping surfaces; the outer side of one of the mounting plates (1) is provided with an angle adjusting device, by which two wiping bodies (2) can be controlled to rotate synchronously and the position is kept locked when one wiping surface of each wiping body (2) faces a cleaning cavity (51) in a wiping body box (5); the left side and the right side of each wiping body (2) are provided with arc-shaped contact parts (21); when the wiping bodies (2) are locked, the outer arc-shaped contact parts (21) of the two wiping bodies (2) are fixed on the inner side of the wiping body box (5) in a pressing mode by pressing the wiping body box (5) upwards, and the wiping surfaces entering the cleaning cavity (51) are in contact with the wiping body cleaning device.

2. The blackboard eraser with self-cleaning function according to claim 1, characterized in that each of the wiping bodies (2) is connected between two mounting plates (1) by a rotation shaft i; the angle adjusting device comprises synchronous gears I (40) which are respectively arranged at one end of two rotating shafts I, the two synchronous gears I (40) are respectively positioned at the outer side of a right end mounting plate (1), the outer side of the right end mounting plate (1) is also connected with an adjusting gear II (41) which is meshed with the two synchronous gears I (40) through a rotating shaft II, a fixed shell (42) is arranged at the outer sides of the two synchronous gears I (40) and the adjusting gear II (41), one end of the rotating shaft II extends out of the fixed shell (42), and a knob (43) is arranged at the outer side of the extending end, two symmetrical elastic buckles (44) are arranged on the knob (43), two horizontal fixing grooves are arranged on the fixed shell (42), the two elastic buckles (44) are fixed in the corresponding horizontal fixing grooves in a limiting manner, so that the positions of the two wiping bodies (2) are locked.

3. The blackboard eraser with self-cleaning function according to claim 2, wherein the arc contact portion (21) of each wiping body (2) is made of hard rubber with certain elasticity, the two inner side walls of the wiping body case (5) are provided with concave fixing portions matching with the arc contact portion (21), the arc contact portion (21) and the concave fixing portions are provided with friction protrusions, and when the arc contact portion (21) is pressed into the wiping body case (5), the arc contact portion (21) and the concave fixing portions are kept fixed by friction force.

4. The blackboard eraser with the self-cleaning function according to claim 2, wherein the cleaning device for the wiping body comprises guide bars (10) respectively arranged on two inner side walls of the box (5) for the wiping body, each guide bar (10) is slidably connected with a guide seat (9), a cleaning roller (15) made of absorbent sponge is connected between one sides of the two guide seats (9) through a rotating shaft III, and a movement adjusting component for driving the two guide seats (9) and the cleaning roller (15) to move left and right is further arranged in the box (5) for the wiping body; a cleaning liquid box (17) is fixedly arranged on the outer side of the wiping body box (5), a liquid inlet (18) is formed in one side of the cleaning liquid box (17), and a liquid outlet communicated with a cleaning cavity (51) of the wiping body box (5) is formed in the other side of the cleaning liquid box (17); the liquid outlet is fixedly provided with a conical sealing pin (19) through a connecting spring, and the conical end of the sealing pin (19) is exposed in the cleaning cavity (51); when the cleaning roller (15) presses the end of the sealing pin (19), the cleaning liquid in the wiping body box (5) can flow out through the liquid outlet and is absorbed by the cleaning roller (15).

5. The blackboard eraser with self-cleaning function according to claim 4, wherein the moving adjusting assembly comprises a moving screw rod (11) arranged in parallel on the upper side of one of the guide bars (10), the moving screw rod (11) is provided with a nut seat matched with the moving screw rod, and the nut seat is fixedly connected with the corresponding guide seat (9); when the movable screw (11) rotates, the nut seat can be driven to move left and right, and then the two guide seats (9) and the cleaning roller (15) are driven to move left and right; the outer side of the wiping body box (5) is also provided with a driving device (12) for driving the movable screw rod (11) to rotate, and the driving device (12) adopts a miniature bidirectional motor.

6. The blackboard eraser with the self-cleaning function according to claim 4 or 5, characterized in that the rotating shaft III is a U-shaped crankshaft (13), the cleaning roller (15) is sleeved in the U-shaped concave part of the crankshaft (13), and one ends of the crankshaft (13) opposite to the two guide seats (9) are respectively provided with a torsion spring (14); when the two torsion springs (14) are in a natural state, the U-shaped concave part is integrally inclined to the upper opening of the wiping body box (5) by a certain angle.