CN2675420Y

CN2675420Y - Voltage stabilizing blackboard eraser with double dust collection function

Info

Publication number: CN2675420Y
Application number: CN 03203985
Authority: CN
Inventors: 张松云
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-02-14
Filing date: 2003-02-14
Publication date: 2005-02-02
Anticipated expiration: 2013-02-14

Abstract

The utility model relates to a voltage stabilizing blackboard eraser with double dust-collecting functions. Dust is collected and controlled by a special-purpose dust-collecting erasing roller, dust-sealing baffles and a decompression sound-absorbing board; wherein, the special-purpose dust-collecting eraser roller which is distributed in an inclined direction and is provided with a compression setting value for erasing words is a convex-concave shape and an elastic body. The convex-concave surface being distributed in the inclined direction as well as the elastic force can collect 70% dust and the rest 30% is collected by a pair of dust-sealing baffles. When the erasing roller rotates, the inner cavity of the blackboard eraser can generate atmospheric pressure to make the dust fly and the decompression sound-absorbing board can balance the atmospheric pressure to damage the effect of a resonant cavity and decrease noise. The blackboard eraser achieves the use index on the facets of erasing clean degree, dust-collecting degree, loaded noise and service life.

Description

A kind of pair of dust collection function voltage stabilizing blackboard eraser

Technical field

The utility model relates to a kind of teaching aid, is the blackboard eraser that can collect dust.

Background technology

At present, the blackboard eraser that school uses can only be wiped letter written with chalk, can not control the dust that flies upward, and this situation continues into the present.

Summary of the invention

Can not the control of dust problem in order to overcome existing use blackboard eraser, but the utility model provides a kind of blackboard eraser of control of dust, and it keeps former blackboard eraser occupation mode, increased mechanical function, can wipe letter written with chalk up hill and dale, chalk dust can also be collected, and not have the noise of machinery.It does not need motor, less demanding to the user.

The utility model for the technical scheme that the technical solution problem adopts is: blackboard eraser is made rectangular box body, wipes and rolls along in the box that crouches, and its both ends have the gear on the driving rubber tire at gear and two to divide left and right engagement.When the driving rubber tire is moved on blackboard, wipe to roll and execute wiping with its counter-rotating.Wiping rolls on one and puts rubber wheel, for envelope dirt blend stop provides power to use.Roll because of wiping and should wipe word control of dust again, so that make with the felt bar on the surface is concavo-convex, diagonally distribute, pacify the fat vacuole foam and do basic unit with gathering, oblique male and fomale(M﹠F) can be wiped letter written with chalk off during use, and the powder ash can fall in order.This layout also makes to wipe to roll and meets structural strength and compliance, and poly-peace fat vacuole foam has guaranteed essential elasticity.

Envelope dirt blend stop is done control of dust for the second time, and it is an axostylus axostyle, along the long cellular rubber bar that is stained with, vertical protrusion one a little tube, in the elastic force steel ball is housed, be placed in respectively to wipe and roll the left and right sides, steel ball contacts the component movement pair with the rubber wheel point that wiping rolls in the little tube of projection.If execute left when wiping, to wipe the rotation of rolling the little tube steel ball on right side is screwed off, limited post blocks, and seal the dirt blend stop and turn down this moment, and dust is sealed in cellular rubber bar and blackboard surface zero clearance, combines in the box.The left side steel ball screws on together with little tube, and envelope dirt blend stop is dug to cooperate and executed wiping.If then described action is opposite when executing wiping to the right.

Because of Shi Zhuanshi is rolled in wiping, can give in the board wiper box and bring air pressure to cause airborne dust, lid is made the foam air permeable plate also can eliminate the sonorant that produces when gear rotates with decompression.The one side that contacts with blackboard is put two support wheels makes operation brisk.

The effect that the utility model is useful is: the blackboard surface that is nuzzled up by it does not have floating dust, collects dust and thoroughly concentrates.

Description of drawings

Be described further below in conjunction with accompanying drawing:

Fig. 1 be of the present utility model gather dust to wipe roll figure, in axle is arranged is the felt rug that diagonally distributes by on the left of (axle head still has gear) rubber wheel, surface being arranged, be 35 °.Figure six is its left view, visible concavo-convex periphery, and basic unit is a polyurethane foam.

Fig. 2 is an envelope dirt blend stop front view, is the axle shape, along the long cellular rubber bar that is stained with.Fig. 7 is Fig. 2 lateral plan, a visible vertical cylinder that protrudes, in shoot the power pearl.

Fig. 3 is that allocation plan is rolled in envelope dirt blend stop and wiping, and envelope dirt blend stop places the abrasive tumbling left and right sides respectively, and the little tube of visible vertical protrusion steel ball rolls rubber wheel point with wiping and contacts.Fig. 8 is its side view, as seen seals the lateral location relation of dirt blend stop and abrasive tumbling.

Blackboard eraser front view when Fig. 4 is the blackboard level, Fig. 9 are its vertical view, as seen its size profile.The engagement with the wiping hobbing machine from the visible driven wheel of Fig. 4 at two ends.Drive rubber tire, wipe to roll and protrude the blackboard eraser bottom surface.

Fig. 5 is the sectional drawing of Fig. 4.The dotted line that protrudes on the envelope dirt blend stop is little tube steel ball (it contacts with the rubber wheel point that wiping rolls on), and being subjected to wipe to roll spin to change influences under the left side spin, and the cellular rubber bar zero clearance on the envelope dirt blend stop contacts with blackboard surface.The right side screws on, and the cellular rubber bar on the envelope dirt blend stop lifts.4 amplitudes that limited post control screws on, screws off.

Figure 9 shows that the blackboard eraser lid, make, work to subtract air pressure and eliminate resonant tank with the air-permeable foam plate.

The specific embodiment

Blackboard eraser is made rectangular box body (Fig. 4), (Fig. 5), (Fig. 9), roll coupling, wipe the roller bearing two ends and respectively put gear and the gears engaged (Fig. 4) that drives on the rubber tire with wiping.With hand-power the driving rubber tire on the blackboard eraser is turned round on blackboard,, wipe and roll and counter-rotating to execute wiping because of the effect of gear.Drive rubber tires in the operation of blackboard eraser one side (with the contact-making surface of blackboard) two and protrude (Fig. 4), wipe to roll more and need exceed the driving rubber tire, rolling because of wiping is foam sponge basic unit (Fig. 6), and hand pressure is slightly wiped to roll promptly to produce to connect with blackboard and touched face greatly, can strengthen degree of cleaning.Wiping is rolled spin to change and is executed when wiping, and convex-concave surface (Fig. 6) is most important to wiping letter written with chalk off.Diagonally distribute (Fig. 1) be in order to allow chalk dust can fall collection in an orderly manner, requirement of strength and compliance are rolled in satisfied wiping.

Envelope dirt blend stop (Fig. 2), (Fig. 7) play dust agglutination for the second time, put with wiping and roll both sides (Fig. 3), and vertical protrusion one little wound packages elastic force steel ball contacts component movement pair (Fig. 3), (Fig. 8) with the rubber wheel point that wiping rolls on.Wiping is rolled spin and is transferred to when industry, and because of the effect of rubber wheel, the little tube elastic force steel ball on the side blend stop can screw off, and causes on the blend stop cellular rubber bar with the blackboard surface zero clearance, to seal dust because of limited post (Fig. 5) restriction.And opposite side is subjected to equally to wipe to roll spin to change and influences and screw on, and blend stop lifts and is beneficial to control of dust.

Decompression acoustical panel (Fig. 9) also is the board wiper box lid, opens and can fall ash.Foamed material is made, and because of ventilative, can suppress to wipe to roll spin and change the air pressure that produces in the box, unlikely airborne dust, the sonorant that has produced when also having eliminated gear drive.

In order to make operation more steady, two support wheels have simultaneously been settled in operation.

Claims

1, a kind of dust-removing blackboard eraser with the rubber tire driven wheel, is executed wiping with rotation mode, it is characterized in that: the two ends spindle nose is rolled in the wiping that can gather dust respectively a pair of gear, wiping is rolled parallel longitudinal and is put a pair of envelope dirt blend stop, and blackboard eraser simultaneously is equipped with the decompression acoustical panel, and corresponding rubber tire is respectively put a support wheel.

2, blackboard eraser according to claim 1 is characterized in that: it is that basic unit is a polyurethane foam that the wiping of gathering dust is rolled, and surface layer is a felt rug, and concavo-convex vertical distribution becomes 35 ° of angles, and the center has axle to pass, and an end is equipped with the transmission cushion rubber.

3, blackboard eraser according to claim 1 is characterized in that: the blend stop of envelope dirt is for an axle property, and vertically with the cellular rubber bar, an end vertical direction is with one, in have spring to push up a steel ball, limited post is arranged on the tube both sides.