CN107443980A

CN107443980A - A kind of dust-proof blackboard eraser

Info

Publication number: CN107443980A
Application number: CN201710616061.4A
Authority: CN
Inventors: 瞿王城
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-07-26
Filing date: 2017-07-26
Publication date: 2017-12-08

Abstract

The present invention relates to a kind of dust-proof blackboard eraser, belong to school supply and stationery technical field, the dust-proof blackboard eraser includes dust-collecting cavity, substrate, dust-proof frame and blackboard eraser body, the lower surface of the dust-collecting cavity and the substrate is detachably connected, the upper surface of the substrate is detachably connected with the dust-proof frame, the upper surface of the substrate is detachably connected with the blackboard eraser body, the blackboard eraser body is located in the cavity that the dust-proof frame surrounds, there is the groove of the upper surface of the exposure substrate between the blackboard eraser body and the dust-proof frame, there is multiple through holes through the blackboard eraser body in the blackboard eraser body, the substrate has multiple conical through-holes through the substrate.Compared with prior art, dust-proof blackboard eraser of the invention effectively can prevent dust from flying upward everywhere, and then help to protect the health of academics and students.

Description

A kind of dust-proof blackboard eraser

Technical field

The present invention relates to school supply and stationery technical field, and in particular to a kind of dust-proof blackboard eraser.

Background technology

Blackboard eraser is the indispensable instrument in classroom classroom, and during the person's handwriting of existing blackboard eraser erasing chalk, it can produce a large amount of Dust, dust flies away in atmosphere, easily by academics and students' suction body, and then the health of academics and students is caused Very big harm.A kind of blackboard eraser with dust reduction capability how is designed, is industry urgent problem to be solved.

The content of the invention

The purpose of the present invention is to overcome above-mentioned the deficiencies in the prior art, there is provided a kind of dust-proof blackboard eraser.

To achieve the above object, a kind of dust-proof blackboard eraser proposed by the present invention, the dust-proof blackboard eraser include dust-collecting cavity, base Plate, dust-proof frame and blackboard eraser body, the lower surface of the dust-collecting cavity and the substrate are detachably connected, the substrate Upper surface be detachably connected with the dust-proof frame, the upper surface of the substrate and the blackboard eraser body carry out removable Connection is unloaded, the blackboard eraser body is located in the cavity that the dust-proof frame surrounds, the blackboard eraser body and the dust-proof side There is the groove of the upper surface of the exposure substrate between frame, have in the blackboard eraser body multiple through blackboard eraser wiping The through hole of body, the through hole expose the upper surface of the substrate, and the substrate has multiple conical through-holes through the substrate, The conical through-hole is more than the conical through-hole in the aperture of the upper surface of the substrate in the aperture of the lower surface of the substrate.

Preferably, the material of the dust-collecting cavity, the substrate and the dust-proof frame is plastics, the blackboard eraser is wiped The material of body is sponge.

Preferably, four grooves between the blackboard eraser body and dust-proof frame through connection successively.

Preferably, the blackboard eraser body is higher 0.5-1 centimetres than the dust-proof frame.

Preferably, multiple through holes in the blackboard eraser body are shaped as manhole, square through-hole, rectangle One kind in through hole or rhombus through hole, multiple through holes in the blackboard eraser body are arranged in arrays.

Preferably, the aperture of the manhole is 0.5-1.5 centimetres.

Preferably, multiple conical through-holes in the substrate are arranged in arrays.

Preferably, the conical through-hole is 1-2 centimetres in the aperture of the upper surface of the substrate, the conical through-hole exists The aperture of the lower surface of the substrate is 3-5 millimeters.

Beneficial effects of the present invention are as follows：

Set between each part of the dust-proof blackboard eraser of the present invention using detachable, with the cleaning of convenient dust-proofing blackboard eraser and more Change, there is the groove of the upper surface of the exposure substrate, and the blackboard between the blackboard eraser body and the dust-proof frame Wiping in rub body has multiple through holes through the blackboard eraser body, and during being erased the board using it, a part of dust can To fall into groove, and then by the conical through-hole of substrate collected by dust-collecting cavity, another part dust can pass through the blackboard The through hole for wiping rub body enters dust-collecting cavity, by the synergy of the two, effectively avoids dust is aerial from flying away, and the present invention exists Multiple conical through-holes are set in substrate, and the conical through-hole is more than the conical through-hole in the aperture of the upper surface of the substrate It must be set in the aperture of the lower surface of the substrate, dust can be caused smoothly to enter dust-collecting cavity, while said structure taper is led to The setting in hole is it is possible to prevente effectively from the dust in dust-collecting cavity is come out by conical through-hole and unrestrained, and therefore, of the invention is dust-proof black Blackboard eraser effectively can prevent dust from flying upward everywhere, and then help to protect the health of academics and students.

Brief description of the drawings

Fig. 1 is the front view of the dust-proof blackboard eraser of the present invention；

Fig. 2 is the top view of the dust-proof blackboard eraser of the present invention；

Fig. 3 is the top view of the substrate of the dust-proof blackboard eraser of the present invention；

Fig. 4 is schematic cross-section of the substrate of dust-proof blackboard eraser in Fig. 3 along dotted line A-B.

Embodiment

Referring to Fig. 1-4, a kind of dust-proof blackboard eraser proposed by the present invention, the dust-proof blackboard eraser include dust-collecting cavity 1, substrate 2, Dust-proof frame 3 and blackboard eraser body 4, the lower surface of the dust-collecting cavity 1 and the substrate 2 are detachably connected, the base The upper surface of plate 2 is detachably connected with the dust-proof frame 3, and the upper surface of the substrate 2 is entered with the blackboard eraser body 4 Row is detachably connected, and the blackboard eraser body 4 is located in the cavity that the dust-proof frame 3 surrounds, the blackboard eraser body 4 and institute The groove 5 of the upper surface between dust-proof frame 3 with the exposure substrate 2 is stated, there is multiple run through in the blackboard eraser body 4 The through hole 6 of the blackboard eraser body 4, the through hole 6 expose the upper surface of the substrate 2, and the substrate 2 runs through institute with multiple The conical through-hole 7 of substrate 2 is stated, the conical through-hole 7 exists in the aperture of the upper surface of the substrate 2 more than the conical through-hole 7 The aperture of the lower surface of the substrate 2.

Wherein, the material of the dust-collecting cavity 1, the substrate 2 and the dust-proof frame 3 is plastics, and the blackboard eraser is wiped The material of body 4 is sponge, the through connection successively of four grooves 5 between the blackboard eraser body 4 and the dust-proof frame 3, institute Blackboard eraser body 4 is stated than dust-proof high 0.5-1 centimetres of the frame 3, multiple through holes 6 in the blackboard eraser body 4 are shaped as One kind in manhole, square through-hole, rectangular through holes or rhombus through hole, multiple through holes 6 in the blackboard eraser body 4 It is arranged in arrays, preferably, the aperture of the manhole is 0.5-1.5 centimetres, multiple conical through-holes in the substrate Arranged in arrays, the conical through-hole is 1-2 centimetres in the aperture of the upper surface of the substrate, and the conical through-hole is in the base The aperture of the lower surface of plate is 3-5 millimeters.

Embodiment 1

Referring to Fig. 1-4, a kind of dust-proof blackboard eraser proposed by the present invention, the dust-proof blackboard eraser includes dust-collecting cavity 1, substrate 2, dust-proof Frame 3 and blackboard eraser body 4, the lower surface of the dust-collecting cavity 1 and the substrate 2 are detachably connected, the substrate 2 Upper surface is detachably connected with the dust-proof frame 3, and the upper surface of the substrate 2 is carried out with the blackboard eraser body 4 can Dismantling connection, the blackboard eraser body 4 are located in the cavity that the dust-proof frame 3 surrounds, and the blackboard eraser body 4 is prevented with described There is the groove 5 of the upper surface of the exposure substrate 2 between dirt frame 3, have in the blackboard eraser body 4 multiple through described The through hole 6 of blackboard eraser body 4, the through hole 6 expose the upper surface of the substrate 2, and the substrate 2 runs through the base with multiple The conical through-hole 7 of plate 2, the conical through-hole 7 are more than the conical through-hole 7 in the aperture of the upper surface of the substrate 2 described The aperture of the lower surface of substrate 2.

Wherein, the material of the dust-collecting cavity 1, the substrate 2 and the dust-proof frame 3 is plastics, and the blackboard eraser is wiped The material of body 4 is sponge, the through connection successively of four grooves 5 between the blackboard eraser body 4 and the dust-proof frame 3, institute Blackboard eraser body 4 is stated than dust-proof 3 high 0.7 centimetres of the frame, multiple through holes 6 in the blackboard eraser body 4 are shaped as justifying Shape through hole, multiple through holes 6 in the blackboard eraser body 4 are arranged in arrays, and the aperture of the manhole is 1 centimetre, described Multiple conical through-holes in substrate are arranged in arrays, and the conical through-hole is 1.2 centimetres in the aperture of the upper surface of the substrate, The conical through-hole is 4 millimeters in the aperture of the lower surface of the substrate.

Set between each part of the dust-proof blackboard eraser of the present invention using detachable, with the cleaning of convenient dust-proofing blackboard eraser And replacing, the groove of the upper surface with the exposure substrate between the blackboard eraser body and the dust-proof frame, and it is described There is multiple through holes through the blackboard eraser body, during being erased the board using it, a part of powder in blackboard eraser body Dirt can fall into groove, and then by the conical through-hole of substrate collected by dust-collecting cavity, another part dust can be by described The through hole of blackboard eraser body enters dust-collecting cavity, by the synergy of the two, effectively avoids dust is aerial from flying away, this hair It is bright that multiple conical through-holes are set in a substrate, and the conical through-hole is more than the taper in the aperture of the upper surface of the substrate Through hole must be set in the aperture of the lower surface of the substrate, dust can be caused smoothly to enter dust-collecting cavity, while said structure is bored The setting of shape through hole is it is possible to prevente effectively from the dust in dust-collecting cavity is come out by conical through-hole and unrestrained, and therefore, of the invention is anti- Dirt blackboard eraser effectively can prevent dust from flying upward everywhere, and then help to protect the health of academics and students.

Finally it should be noted that：Obviously, above-described embodiment is only intended to clearly illustrate example of the present invention, and simultaneously The non-restriction to embodiment.For those of ordinary skill in the field, can also do on the basis of the above description Go out other various forms of changes or variation.There is no necessity and possibility to exhaust all the enbodiments.And thus drawn Among the obvious changes or variations that Shen goes out is still in protection scope of the present invention.

Claims

A kind of 1. dust-proof blackboard eraser, it is characterised in that：The dust-proof blackboard eraser includes dust-collecting cavity, substrate, dust-proof frame and black Blackboard eraser rub body, the lower surface of the dust-collecting cavity and the substrate are detachably connected, and the upper surface of the substrate is prevented with described Dirt frame is detachably connected, and the upper surface of the substrate is detachably connected with the blackboard eraser body, the blackboard Wipe rub body to be located in the cavity that the dust-proof frame surrounds, there is exposure institute between the blackboard eraser body and the dust-proof frame The groove of the upper surface of substrate is stated, there is multiple through holes through the blackboard eraser body in the blackboard eraser body, it is described logical Hole exposes the upper surface of the substrate, and the substrate has multiple conical through-holes through the substrate, and the conical through-hole exists The aperture of the upper surface of the substrate is more than the conical through-hole in the aperture of the lower surface of the substrate.
2. dust-proof blackboard eraser according to claim 1, it is characterised in that：The dust-collecting cavity, the substrate and described anti- The material of dirt frame is plastics, and the material of the blackboard eraser body is sponge.
3. dust-proof blackboard eraser according to claim 1, it is characterised in that：The blackboard eraser body and the dust-proof frame it Between four grooves through connection successively.
4. dust-proof blackboard eraser according to claim 1, it is characterised in that：The blackboard eraser body is higher than the dust-proof frame 0.5-1 centimetres.
5. dust-proof blackboard eraser according to claim 1, it is characterised in that：The shape of multiple through holes in the blackboard eraser body Shape is one kind in manhole, square through-hole, rectangular through holes or rhombus through hole, multiple logical in the blackboard eraser body Hole is arranged in arrays.
6. dust-proof blackboard eraser according to claim 5, it is characterised in that：The aperture of the manhole is 0.5-1.5 lis Rice.
7. dust-proof blackboard eraser according to claim 1, it is characterised in that：Multiple conical through-holes in the substrate are in matrix Arrangement.
8. dust-proof blackboard eraser according to claim 1, it is characterised in that：The conical through-hole is in the upper surface of the substrate Aperture be 1-2 centimetres, the conical through-hole is 3-5 millimeters in the aperture of the lower surface of the substrate.