CN203528155U

CN203528155U - Multifunctional blackboard eraser

Info

Publication number: CN203528155U
Application number: CN201320515430.8U
Authority: CN
Inventors: 纪凤翔
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-08-23
Filing date: 2013-08-23
Publication date: 2014-04-09
Anticipated expiration: 2023-08-23

Abstract

The utility model discloses a multifunctional blackboard eraser. The multifunctional blackboard eraser comprises a cylindrical hand shank. A telescopic rod is connected to the interior of the hand shank in a sliding mode. One end, away from the hand shank, of the telescopic rod is in threaded connection with a blackboard eraser body. The lower portion of the blackboard eraser body is fixedly connected with a hairbrush. A first cavity and a second cavity are arranged in the blackboard eraser body. Vent holes communicated with the outside are formed in the first cavity. A motor is arranged in the second cavity. A rotating shaft of the motor stretches into the first cavity and is connected with a dust collection fan in a rotating mode, and the dust collection fan is arranged in the first cavity. Through the adoption of the technical scheme, the telescopic rod and the blackboard eraser body are combined together, so short teachers or short students can erasing characters in higher places without the aid of a stool; the telescopic rod and the blackboard eraser body can be taken apart at class, and the telescopic rod is used as a teaching rod, so the multifunctional blackboard eraser is convenient to use.

Description

A kind of multifunctional blackboard eraser

Technical field

The utility model belongs to teaching technique with the apparatus field, specifically relates to a kind of multifunctional blackboard eraser.

Background technology

Blackboard eraser is a kind of instrument being widely used in teaching classroom, plays erasing chalk writing.But due to chalk writing, very easily produce dust during by wiping, and existing blackboard eraser itself does not have the function of absorption dust, so very easily cause a large amount of dust floating everywhere.Meanwhile, dust is very large to respiratory tract, sucks for a long time a large amount of dust and easily causes breathing problem.While how to prevent blackboard wiping, causing a large amount of floating of dust is problem demanding prompt solution, does not find to possess at present the blackboard eraser of absorption dust function.When the writing of erasing blackboard higher position, shorter teacher or classmate need to just can complete by stool, very trouble.

Utility model content

The purpose of this utility model is for the deficiencies in the prior art, provides a kind of chalk dust producing of can avoiding when erasing the board to fly away everywhere, can facilitate the multifunctional blackboard eraser of the higher writing in position on erasing blackboard simultaneously.

For addressing the above problem, the utility model by the following technical solutions:

A multifunctional blackboard eraser, comprises columnar handle, in described handle, slidably connects expansion link, and described expansion link is connected with blackboard eraser body away from the threaded one end of handle; The bottom of described blackboard eraser body is fixedly connected with bristle, in described blackboard eraser body, be provided with the first cavity, the second cavity, described the first cavity is provided with the passage being communicated with outside, in described the second cavity, be provided with motor, the rotating shaft of described motor is deep in the first cavity and is rotationally connected with the dust-absorbing fan being located in the first cavity.

Further improve:

In described handle, be connected with columniform fixed bar, on described fixed bar, offer several grooves, in described each groove, by spring, be connected with hemispheric projection, one end near fixed bar on described expansion link is provided with several hole slots corresponding with projection, and described projection is connected in the hole slot of fixed bar by Spring Card.

Further improve:

In described the second cavity, be provided with battery case, battery be housed in described battery case and be connected by wire with motor.

Further improve:

Position corresponding with the first cavity on described blackboard eraser body is provided with shoot door.

The utility model adopts technique scheme, by expansion link is combined with blackboard eraser body, makes shorter teacher or classmate need to just can not wipe the writing of eminence by stool; On fixed bar, offer several grooves, in groove, by spring, be connected with hemispheric projection, expansion link is provided with the hole slot matching with groove, coordinates the flexible and clamping that facilitates expansion link by projection with hole slot; The part chalk dust that the setting of dust-absorbing fan can produce when erasing the board is drawn in the first cavity by passage, can reduce the chalk dust place producing when erasing the board flies away, expansion link is threaded with blackboard eraser body, in the time of at school, also expansion link and blackboard eraser body can be taken apart, expansion link is as teaching pole, easy to use.

Below in conjunction with accompanying drawing the technical solution of the utility model, be described further.

Accompanying drawing explanation

Accompanying drawing 1 is structural representation of the present utility model;

Accompanying drawing 2 is the A-A cutaway view of accompanying drawing 1.

In figure: 1-handle; 2-fixed bar; 3-expansion link; 4-projection; 5-spring; 6-blackboard eraser body; 7-the first cavity; 8-motor; 9-dust-absorbing fan; 10-the second cavity; 11-battery case; 12-passage; 13-groove; 14-bristle; 15-shoot door.

The specific embodiment

Embodiment, as shown in Figure 1 and Figure 2, a kind of multifunctional blackboard eraser, comprises columnar handle 1, in described handle 1, slidably connects expansion link 3, described expansion link 3 is connected with blackboard eraser body 6 away from the threaded one end of handle 1.

In described handle 1, be connected with columniform fixed bar 2, on described fixed bar 2, offer several grooves 13, in described each groove 13, by spring 5, be connected with hemispheric projection 4, one end near fixed bar 2 on described expansion link 3 is provided with several hole slots corresponding with projection 4, and described projection 4 is connected in the hole slot of fixed bar 2 by spring 5.

The bottom of described blackboard eraser body 6 is fixedly connected with bristle 14, in described blackboard eraser body 6, be provided with the first cavity 7, the second cavity 10, described the first cavity 7 is provided with the passage 12 being communicated with outside, in described the second cavity 10, be provided with motor 8, the rotating shaft of described motor 8 is deep in the first cavity 7 and is rotationally connected with the dust-absorbing fan 9 being located in the first cavity 7.

In described the second cavity 10, be provided with battery case 11, battery be housed in described battery case 11 and be connected by wire with motor 8.

Position corresponding with the first cavity 7 on described blackboard eraser body 6 is provided with shoot door 15, by opening shoot door 15, can conveniently the chalk dust in the first cavity 7 be removed.

During use, pull expansion link 3, make expansion link 3 overcome spring 5 and be applied to the power on projection 4, can make expansion link 3 protruding, expansion link 3 stretches out rear projection 4 and snaps fit onto again in the hole slot of expansion link 3 expansion link 3 is fixing with fixed bar 2; Dust-absorbing fan 9 is housed in blackboard eraser body 2, the part chalk dust that dust-absorbing fan 9 can produce when erasing the board is drawn in the first cavity 7 by passage 12, effectively having reduced chalk dust flies upward everywhere, expansion link 3 is threaded with blackboard eraser body 6, in the time of at school, also expansion link 3 and blackboard eraser body 6 can be taken apart, expansion link 3 is as teaching pole, easy to use.

Claims

1. a multifunctional blackboard eraser, comprise handle (1), it is characterized in that: in described handle (1), slidably connect expansion link (3), described expansion link (3) is connected with blackboard eraser body (6) away from the threaded one end of handle (1), the bottom of described blackboard eraser body (6) is fixedly connected with bristle (14), in described blackboard eraser body (6), be provided with the first cavity (7), the second cavity (10), described the first cavity (7) is provided with the passage (12) being communicated with outside, in described the second cavity (10), be provided with motor (8), the rotating shaft of described motor (8) is deep in the first cavity (7) and is rotationally connected with the dust-absorbing fan (9) being located in the first cavity (7), in described handle (1), be connected with columniform fixed bar (2), on described fixed bar (2), offer several grooves (13), in described each groove (13), by spring (5), be connected with hemispheric projection (4), the upper one end near fixed bar (2) of described expansion link (3) is provided with several hole slots corresponding with projection (4), and described projection (4) is connected in the hole slot of fixed bar (2) by spring (5), in described the second cavity (10), be provided with battery case (11), battery be housed in described battery case (11) and be connected by wire with motor (8), the upper position corresponding with the first cavity (7) of described blackboard eraser body (6) is provided with shoot door (15).