CN210792609U

CN210792609U - Dust-absorbing type chalk eraser

Info

Publication number: CN210792609U
Application number: CN201920289785.7U
Authority: CN
Inventors: 黄政睿
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-03-07
Filing date: 2019-03-07
Publication date: 2020-06-19
Anticipated expiration: 2029-03-07

Abstract

The utility model provides a dust absorption type chalk eraser, which belongs to the technical field of stationery. The design is a chalk eraser with dust absorption function, comprising a first brush and a second brush, wherein the first brush and the second brush are arranged in a dust absorption cavity of a shell, the first brush is connected with a first driven wheel through a first rotating shaft, the second brush is connected with a second driven wheel through a second rotating shaft, the rotating shaft penetrates through the shell, the first driven wheel and the second driven wheel are connected with a driving wheel, the driving wheel is arranged on an output shaft of a direct current motor, the direct current motor is arranged on the shell, the direct current motor is powered by a dry battery, and the dry battery is arranged in the shell; after the fan blades rotate, negative pressure is formed in a dust suction cavity of the chalk eraser, chalk dust erased by the brush is discharged through the dust discharge port, and meanwhile, in order to relieve the inconvenience caused by the fact that a user lifts two hands high when the user erases a blackboard, a telescopic handle is installed on the chalk eraser.

Description

Dust-absorbing type chalk eraser

Technical Field

The utility model belongs to the technical field of stationery technique and specifically relates to a dust absorption formula chalk eraser.

Background

The traditional chalk eraser can cause a large amount of dust in the using process, and has adverse effects on the health of teachers and students, at present, some chalk eraser designs with a dust collection function are also provided, for example, the chalk eraser design mentioned in the invention patent application with the patent number of 201610182314.7 in China drives a power wheel to rotate by utilizing the friction force generated by the left and right movement of the chalk eraser on a blackboard when the blackboard is erased, the power wheel drives a flywheel to rotate so as to realize dust collection, the suction force of the chalk eraser is smaller in the design, the storage capacity of the chalk eraser for the dust is poorer, and meanwhile, students of different ages often take great effort when using the chalk eraser to erase the blackboard.

SUMMERY OF THE UTILITY MODEL

The technical task of the utility model is to solve the deficiency of the prior art and provide a dust absorption type chalk eraser.

The core thought of the utility model is, design a chalk eraser with dust absorption function, the DC motor has integrateed in the inside of chalk eraser, DC motor passes through gear drive and drives two brush operations, DC motor drives the flabellum rotation through the pivot simultaneously, the flabellum forms the negative pressure in the dust absorption cavity of chalk eraser after rotating, the chalk dust that wipes the brush down is discharged through the dust exhaust port, and simultaneously, in order to alleviate the inconvenience that the user high-lift both hands brought when wiping the blackboard, telescopic handle has been installed on the chalk eraser, the inside cavity of handle forms the dust exhaust pipeline, the dust that is inhaled away by the dust absorption fan finally gets into in the dust cage of handle afterbody behind the handle.

The utility model provides a technical scheme that its technical problem adopted is:

a dust absorption type chalk eraser comprises a first hairbrush and a second hairbrush, wherein the first hairbrush and the second hairbrush are arranged in a dust absorption cavity of a shell, the first hairbrush is connected with a first driven wheel through a first rotating shaft, the second hairbrush is connected with a second driven wheel through a second rotating shaft, the rotating shaft penetrates through the shell, the first driven wheel and the second driven wheel are connected with a driving wheel, and the driving wheel is arranged on an output shaft of a direct current motor; the direct current motor is arranged on the shell and is powered by the dry battery, and the dry battery is arranged in the shell.

An output shaft of the direct current motor is provided with an air suction fan, the air suction fan is arranged in a flow guide cavity, the flow guide cavity is communicated with a dust suction cavity through a dust suction port, the flow guide cavity is provided with a dust exhaust pipe, and the dust exhaust port is provided with a connecting sleeve.

The dust exhaust pipe is connected with the telescopic link through a connecting sleeve, the telescopic link is of a hollow tubular structure, air inlets are extended out of two sides of the head of the telescopic link, the tail of the telescopic link is provided with a handle, a storage bag is installed at the tail of the handle, a filter element is installed in the storage bag, and the filter element is of a stacked structure.

The telescopic rod consists of a main pipe and a sliding pipe, and the main pipe is connected with the sliding pipe through a pin.

Compared with the prior art, the dust absorption type chalk eraser has the beneficial effects that:

(1) the electric erasing mode can save manpower and improve the erasing efficiency, and the dust collection mechanism can prevent dust from flying around in the erasing process, so that the teaching environment can be effectively improved;

(2) the telescopic handle makes the user can improve user's operation experience according to the adjustment length of the height condition freedom of self in the chalk eraser, and the bag of accomodating that lies in the handle afterbody simultaneously dismantles conveniently, the clearance and the maintenance of the chalk eraser of being convenient for.

Drawings

FIG. 1 is a front view of the utility model in a contracted state;

FIG. 2 is a front view of the present invention in an extended state;

fig. 3 is a first three-dimensional view of the housing of the present invention;

fig. 4 is a second three-dimensional view of the housing of the present invention;

the reference numerals in the figures denote: 1. a first brush; 2. a second brush; 3. a first driven wheel; 4. a second driven wheel; 5. a driving wheel; 6. a direct current motor; 7. an air suction fan; 8. a housing; 9. dry batteries; 10. a dust collection cavity; 11. a dust exhaust pipe; 12. a connecting sleeve; 13. a telescopic rod; 131. a main pipe; 132. a slide pipe; 14. a storage bag; 151. a first rotating shaft; 152. a second rotating shaft; 16. a dust suction port; 17. a flow guide cavity; 18. a handle; 19. and (3) a filter element.

Detailed Description

Embodiments of the present invention will be described with reference to the accompanying drawings.

As shown in fig. 1-4, a dust-absorbing type chalk eraser comprises a first brush 1 and a second brush 2, wherein the first brush 1 and the second brush 2 are installed in a dust-absorbing cavity 10 of a shell 8, the first brush 1 is connected with a first driven wheel 3 through a first rotating shaft 151, the second brush 2 is connected with a second driven wheel 4 through a second rotating shaft 152, a rotating shaft 15 passes through the shell 8, the first driven wheel 3 and the second driven wheel 4 are connected with a driving wheel 5, and the driving wheel 5 is installed on an output shaft of a direct current motor 6; the direct current motor 6 is arranged on the shell body 8, the direct current motor 6 is powered by the dry battery 9, and the dry battery 9 is arranged in the shell body 8.

As the first embodiment of the present invention, when the motor rotates, the rotation directions of the first brush 1 and the second brush 2 are opposite, and one brush rotates clockwise and the other brush rotates counterclockwise when viewed from the brush end surface.

As the first embodiment of the present invention, the rotating shaft 15 and the housing 8 are spaced from each other by a wear-resistant copper sleeve.

As the second embodiment of the present invention, the bearing is installed on the rotating shaft 15, the bearing seat is processed on the housing 8, and the bearing is installed in the bearing seat.

As the first embodiment of the utility model, the first brush 1 and the second brush 2 are installed on the rotating base and can be detached after being worn.

An output shaft of the direct current motor 6 is provided with an air suction fan 7, the air suction fan 7 is arranged in a diversion cavity 17, the diversion cavity 17 is communicated with a dust suction cavity 10 through a dust suction port 16, the diversion cavity 17 is provided with a dust discharge pipe 11, and the dust discharge port 11 is provided with a connecting sleeve 12.

As the first embodiment of the utility model, the suction fan 7 is located the first upper portion from driving wheel 3 and second from driving wheel 4, and the dust exhaust pipe 11 is located the top of water conservancy diversion cavity 17.

As the first embodiment of the utility model, the suction fan 7 is located the first lower part from driving wheel 3 and second from driving wheel 4, and the dust exhaust pipe 11 is located the side of water conservancy diversion cavity 17.

The dust exhaust pipe 11 is connected with the telescopic rod 13 through the connecting sleeve 12, the telescopic rod 13 is of a hollow tubular structure, air inlets extend out of two sides of the head of the telescopic rod 13, a handle 18 is arranged at the tail of the telescopic rod 13, the tail of the handle 18 is provided with a storage bag 14, a filter element 19 is arranged in the storage bag 14, and the filter element 19 is of a stacked structure.

As the first embodiment of the utility model, a filter element 19 is arranged in the containing bag 14.

As a first embodiment of the present invention, the seal ring is installed on the inner ring of the connecting sleeve 12.

The telescopic rod 13 is composed of a main pipe 131 and a sliding pipe 132, and the main pipe 131 is connected with the sliding pipe 132 through a pin.

As the first embodiment of the present invention, the head and the tail of the main pipe 131 have a ring-shaped groove, and a rubber ring is installed in the groove.

As the first embodiment of the present invention, the slide tube 132 is provided with a threaded hole, and a handle with a screw rod is inserted into the threaded hole.

It should be noted that the above-mentioned contents are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, and although the detailed description of the present invention is given to the detailed description of the present invention, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides a dust absorption formula chalk eraser, includes first brush (1) and second brush (2), its characterized in that: the first brush (1) and the second brush (2) are arranged in a dust collection cavity (10) of the shell (8), the first brush (1) is connected with the first driven wheel (3) through a first rotating shaft (151), the second brush (2) is connected with the second driven wheel (4) through a second rotating shaft (152), the first rotating shaft (151) and the second rotating shaft (152) penetrate through the shell (8), the first driven wheel (3) and the second driven wheel (4) are connected with the driving wheel (5), and the driving wheel (5) is arranged on an output shaft of the direct current motor (6); the direct current motor (6) is installed on the shell (8), the direct current motor (6) is powered by a dry battery (9), and the dry battery (9) is installed in the shell (8).

2. The chalk eraser of claim 1, characterized in that: the dust exhaust fan is characterized in that an air suction fan (7) is installed on an output shaft of the direct current motor (6), the air suction fan (7) is installed in a flow guide cavity (17), the flow guide cavity (17) is communicated with a dust suction cavity (10) through a dust suction port (16), a dust exhaust pipe (11) is arranged on the flow guide cavity (17), and a connecting sleeve (12) is installed on the dust exhaust pipe (11).

3. The chalk eraser of claim 2, characterized in that: dust exhaust pipe (11) are connected with telescopic link (13) through connecting sleeve (12), telescopic link (13) are cavity tubular structure, the air inlet is stretched out to the head both sides of telescopic link (13), there is handle (18) afterbody of telescopic link (13), bag (14) are accomodate in the afterbody installation of handle (18), accomodate and install filter core (19) in bag (14), filter core (19) are range upon range of column structure.

4. A dust-collecting type chalk eraser according to claim 3, characterized in that: the telescopic rod (13) is composed of a main pipe (131) and a sliding pipe (132), and the main pipe (131) is connected with the sliding pipe (132) through a pin.