CN203391534U

CN203391534U - Dustproof blackboard eraser

Info

Publication number: CN203391534U
Application number: CN201320417722.8U
Authority: CN
Inventors: 陈浩; 高宝岩; 嵇红亮; 宣琳
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-07-11
Filing date: 2013-07-11
Publication date: 2014-01-15
Anticipated expiration: 2023-07-11

Abstract

The utility model relates to a dustproof blackboard eraser which is designed to solve the technical problems that the existing similar products are poor in dustproof effect and difficult to store chalk dust. The blackboard eraser comprises an eraser body and a base, wherein the eraser body is arranged in a groove in the middle of the base; a cavity for storing chalk dust is formed between the eraser body and the inner wall of the base; the blackbody eraser is characterized in that a flexible sheet is arranged on the periphery of a notch of the side wall end of the groove of the base; the surface of the eraser body is higher than the port surface of the flexible sheet; when the base is pressed, the position of the surface of the eraser body is changed, the flexible sheet and the surface of the eraser body touch a blackboard at the same time, the height of the surface of the eraser body is the same with that of the port surface of the flexible sheet, a gap is formed between the eraser body and a port of the flexible sheet, a containing cavity is opened, and chalk dust enters the containing cavity through the gap between the eraser body and the flexible sheet; the eraser body, the inner wall of the base and the flexible sheet jointly form the containing cavity used for stopping and storing chalk dust. Simultaneously, a magnetic piece is arranged on the base or in the eraser body. The dustproof blackboard eraser is reasonable in design, convenient to use, labor-saving and good in dustproof effect.

Description

Dust-proof blackboard eraser

Technical field

The utility model relates to school supply and stationery, specifically refers to a kind of dust-proof blackboard eraser.

Background technology

Blackboard, chalk and blackboard eraser are requisite school supply and stationery in education activities.Wherein, blackboard refers to a kind of plane that can repeated writing, and plate face is hard, has black, the color such as blackish green, white; Meanwhile, blackboard is formed through disposable compacting by high polymer alloy particle and epoxy resin mostly now, can attract mutually with magnetisable material.Teacher writes to educate student on blackboard with chalk.Yet during with ordinary blackboard eraser wiping chalk word, the phenomenon that can cause chalk powder to exist everywhere, affects quality of instruction, contaminated environment, harm teachers and students are healthy.

The phenomenon that chalk dust flies upward everywhere when overcoming blackboard wiping, people have also developed some dustproof and blackboard erasers easy to use.As the Granted publication CN201712367U of Chinese patent literature publication, Granted publication day 2011.01.19, utility model name is called " Multifunctional magnetic blackboard "; And the Granted publication CN101758713A of Chinese patent literature publication, Shen Qing Publication day 2010.06.30, denomination of invention is " dust-proof blackboard eraser ", but all because expensive or DeGrain can not get promoting.Meanwhile, ordinary blackboard eraser effort comparatively all when blackboard wiping, and weak effect, speed are slow.These problems are not also resolved so far.

Summary of the invention

For overcoming above-mentioned deficiency, technical problem to be solved in the utility model is that the present situation for prior art provides a kind of dust-proof blackboard eraser that facilitates wiping.Its objective is and be achieved through the following technical solutions.

, this blackboard eraser comprises rub body and pedestal, and the middle part of described pedestal has groove, and rub body is arranged in this groove, forms the chamber that stores chalk dust between described rub body and the inwall of described pedestal; The recess sidewall notch periphery that it is characterized in that described pedestal is provided with flexible sheets; Rub body face is higher than the port surface of flexible sheets, while pressing pedestal, rub body Mian position changes, flexible sheets and rub body face are touched blackboard simultaneously, the port surface of rub body face and flexible sheets is with high, between rub body and flexible sheets, form gap, accommodating cavity opens wide, and chalk dust enters in accommodating cavity by the gap between rub body and flexible sheets; The inwall of described rub body, pedestal, flexible sheets are jointly formed for backstop and store the accommodating cavity of chalk dust.This blackboard eraser is when being pressed on blackboard wiping, and chalk dust enters in accommodating cavity by the gap between rub body and flexible sheets; While unclamping this blackboard eraser, restore rub body face position, and rub body face is higher than the port surface of flexible sheets, and accommodating cavity is closed, and rub body is touched mutually with flexible sheets, and chalk dust is stored in accommodating cavity.

According to said structure feature, also can on described pedestal or in described rub body, also be provided with for described blackboard eraser is adsorbed on to the magnetic part on blackboard, when magnetic part and blackboard adhesive, rub body Mian position changes, flexible sheets and rub body face are touched blackboard simultaneously, and the port surface of rub body face and flexible sheets, with high, forms gap between rub body and flexible sheets, accommodating cavity opens wide, and chalk dust enters in accommodating cavity by the gap between rub body and flexible sheets; The inwall of described rub body, pedestal, flexible sheets are jointly formed for backstop and store the accommodating cavity of chalk dust.The i.e. magnetic part of this blackboard eraser and blackboard adhesive, this blackboard eraser is on blackboard during wiping, and chalk dust enters in accommodating cavity by the gap between rub body and flexible sheets; When magnetic part separates with blackboard, rub body ejects the port surface of flexible sheets, the space closure forming between rub body and flexible sheets, and rub body is touched mutually with flexible sheets, and accommodating cavity is closed, and chalk dust is stored in accommodating cavity.

Described rub body is arranged on the middle part of described pedestal, and described accommodating cavity is looped around described rub body around.Above-mentioned rub body is arranged at the structure at pedestal center, in order to make chalk dust that this blackboard eraser gets off wiping relatively easily by backstop and be stored in accommodating cavity.

Between described rub body face and the groove of pedestal, be provided with elastomer.Described elastomer employing spring or described rub body adopt the elastomeric elements such as sponge, and when blackboard eraser is stressed in the situation that, rub body Mian position changes, thereby make rub body face by than the port surface hypermutation of flexible sheets being and its same height originally.Side at rub body is provided with catch, to prevent that the long-time use of rub body from causing deformation.

Between described rub body and flexible sheets, the rub body mask of gap location is gradient.Thereby when rub body and flexible sheets are during at blackboard wiping, while producing gap between described rub body and flexible sheets, be convenient to chalk dust and enter in pedestal; Or flexible sheets is under nature, flexible sheets exceed described groove ends actinal surface rub body part be shaped as similar terrace with edge.

Described flexible sheets is windshield wiper blade formula rubber catch.The windshield wiper blade formula design of flexible sheets, has improved dust removing effects and has facilitated wiping; In order to make this flexible sheets backstop chalk dust better, chalk dust is entered in Rong Zhi chamber, the designing requirement flexible sheets of flexible sheets has rational flexibility or shape, and the ora terminalis place of flexible sheets is comparatively thin.Meanwhile, the material selection of flexible sheets requires elasticity and the hardness of flexible sheets can reach corresponding requirement.And flexible sheets is designed to the shape of windshield wiper blade, is also convenient to chalk dust backstop in accommodating cavity, and easily chalk dust is stored in accommodating cavity.Shape for flexible sheets also can design according to the needs of actual conditions, as: flexible sheets is looped around around rub body; Meanwhile, the material of flexible sheets and planform also can be selected as required.

In described accommodating cavity, be provided with the catch of flexible sheets.This catch is arranged on the inwall of base recess, or designs according to the actual needs; As: this catch is arranged on rub body.When blackboard wiping, gapped between this catch and flexible sheets; When unclamping pedestal or pedestal when blackboard takes off, touching mutually between catch and flexible sheets.This catch stores chalk dust to accommodating cavity and plays the effect that secondary guarantees.

Above-mentioned when the concrete structure of flexible sheets is limited further, described magnetic part is fixed on described pedestal, or between described rub body and described pedestal, or be embedded in described rub body.The structure setting of three kinds of magnetic parts of said structure, also can select as required, as long as can reach the technology order that prevents dust and store chalk dust of the present utility model.

Described pedestal is semielliptical shape.The semielliptical shape structure of pedestal is convenient to the centre of the palm and is gripped this use blackboard eraser, also can adopt as similar semielliptical shape structures such as mouses simultaneously, and hemispherical dome structure.

The another side of described pedestal is provided with wet type rub body, and this side group seat is provided with lid, and lid is provided with storage cap, is provided with storage chamber in lid.Said structure is in conjunction with existing Wet-dry blackboard eraser, and the design feature that storage chalk or gel ink pen chamber are set in similar blackboard eraser.

According to said structure feature, be that its using method is: described rub body is by pressing pedestal or magnetic part is adsorbed on blackboard, and, when blackboard wiping, described rub body and described flexible sheets touch blackboard simultaneously, rub body Mian position changes, and the port surface of rub body face and flexible sheets is with high; Now, between flexible sheets and rub body, form gap, accommodating cavity opens wide, and chalk dust enters in accommodating cavity by the gap between rub body and flexible sheets; When unclamping pedestal or pedestal when blackboard takes off, rub body ejects the port surface of flexible sheets, the space closure forming between rub body and flexible sheets, and rub body is touched mutually with flexible sheets, accommodating cavity closure, chalk dust is stored in accommodating cavity; Simultaneously, when blackboard takes off this blackboard eraser, first the flexible sheets of this blackboard eraser left and right sides is pressed toward rub body place, inner side, flexible sheets on blackboard is touched mutually with rub body, gap-closing between flexible sheets and rub body, accommodating cavity becomes closure from opening wide, the chalk dust backstop of gap location and be sealed in accommodating cavity after, then this this blackboard eraser is taken off from blackboard.In above-mentioned using method, rub body arranges magnetic part or magnetic part is not set and all can realize technical purpose of the present utility model and technique effect, the magneticaction of magnetic part is adsorbed in blackboard except being convenient to this blackboard eraser, when using, it is used for changing the height of rub body, rub body Mian position is changed, and the active force of its magnetic force is with to press the object that pedestal changes rub body Mian position identical.

Compared with prior art, the utility model makes blackboard eraser automatic absorbing on blackboard by magnetic part is set, like this, when blackboard wiping, do not need to blackboard direction, to exert pressure again, only need to promote blackboard eraser it is slided on blackboard can be like a cork by letter written with chalk wiped clean, the chalk dust after wiping by backstop in accommodating cavity.Meanwhile, the set flexible sheets that is similar to windshield wiper blade on the port periphery of pedestal, can and be stored in container chamber the chalk dust backstop of wiping, and can not hinder again the slip of blackboard eraser on blackboard, takes into account laborsaving and dustproof.Be that the utility model has effectively solved chalk dust and disperses everywhere, contribute to teaching to carry out better, protection teachers and students' is healthy.

Accompanying drawing explanation

Fig. 1 is that embodiment mono-of the present utility model is used status architecture schematic diagram, and in figure, A portion has done to confine, and dotted line and arrow are flexible sheets stress and deformation state and are subject to force direction.

Fig. 2 is the A portion structure for amplifying schematic diagram of Fig. 1.

Fig. 3 is embodiment mono-original state structural representation of the present utility model, and in figure, B portion has done to confine.

Fig. 4 is the B portion structure for amplifying schematic diagram of Fig. 3.

Fig. 5 is the improved structure schematic diagram of Fig. 1, and in figure, magnetic part is arranged in rub body.

Fig. 6 is embodiment bis-structural representations of the present utility model, and in figure, magnetic part is arranged between rub body and described pedestal.

Fig. 7 is embodiment tri-structural representations of the present utility model, and in figure, magnetic part and pedestal are connected as a single entity.

Fig. 8 is the improved structure schematic diagram of Fig. 7, and in figure, magnetic part is arranged in rub body.

Fig. 9 is improved structure schematic diagram of the present utility model, and in figure, pedestal has increased wet type rub body, lid, storage cap.

In figure, the name of sequence number is called: 1, pedestal, 2, rub body, 3, magnetic part, 4, flexible sheets, 11, groove.

The specific embodiment

Now by reference to the accompanying drawings, the utility model is further described.

Embodiment mono-as shown in Figure 1 to 4, and this dust-proof blackboard eraser comprises:

Pedestal 1, the matrix of this blackboard eraser, its middle part is hollow groove 11.

Rub body 2, for the chalk trace on blackboard wiping, is arranged on the middle part of the groove of pedestal, and is fixed on the groove of pedestal; Rub body adopts the materials such as sponge kind to make, and at the side of rub body, catch is set, to prevent that long-time use of rub body from causing deformation.The structure of rub body and shape also can design according to actual needs, thereby make chalk dust more easily by backstop and store.When this blackboard eraser is adsorbed on blackboard, during blackboard wiping, described rub body and described flexible sheets all touch blackboard simultaneously; Meanwhile, between between rub body and the sidewall of pedestal, be separated with spacing, this spacing, and the accommodating cavity that is formed for storing chalk dust between flexible sheets.Now, rub body Mian position changes, and between rub body and flexible sheets, forms gap, and chalk dust is entered in accommodating cavity by the gap between rub body and flexible sheets.

Said structure has various ways to form this gap, as: as described in rub body Mian limit end be provided with chamfering, have certain gradient; Or flexible sheets is under nature, it is terrace with edge that flexible sheets exceeds the shape of rub body part of described groove ends actinal surface similar, and this gap is convenient to chalk dust and is entered in accommodating cavity.The elastic strength that elastic strength by described rub body is greater than described flexible sheets above realizes, and for making the elastic strength of described rub body be greater than the elastic strength of described flexible sheets, is provided with spring between described rub body and base bottom, is provided with magnetic part in pedestal.Meanwhile, the cleaning for ease of chalk dust in the normal use of spring and accommodating cavity, also can arrange baffle plate between spring and rub body; In accommodating cavity, be provided with the catch of flexible sheets, accommodating cavity stored to chalk dust and play the effect that secondary guarantees.During this blackboard eraser is taken off or after taking off, because the touching mutually all the time of rub body and flexible sheets, the external world that rub body seals up flexible sheets imports and exports, i.e. clearance seal between rub body and flexible sheets, and chalk dust is blocked in accommodating cavity.Like this, chalk dust just can not fly upward all the time everywhere; In addition, between this blackboard eraser and blackboard, by the suction-operated of magnetic part, make blackboard wiping become quicker, effectively.

Magnetic part 3, is arranged in the accommodating cavity between rub body external diameter and pedestal internal diameter, between itself and blackboard, produces suction, can make blackboard eraser under the effect that there is no external force automatic absorbing to blackboard; And the suction between magnetic part and blackboard can, when mobile blackboard is wiped, be wiped the writing on blackboard just.Like this, as long as mobile, be adsorbed on the blackboard eraser on blackboard, just can wipe more easily, rapidly letter written with chalk.Meanwhile, as shown in Figure 5, Figure 8, magnetic part also can be embedded in described rub body; Or as shown in Figure 6, magnetic part is fixed on pedestal; And as shown in Figure 7, pedestal and magnetic part are connected as a single entity.

Flexible sheets 4, employing flexible material preparation, Free Transform under external force, flexible sheets is bonded on the recess sidewall notch periphery of pedestal, also can adopt the method and the pedestal that are embedded one-body molded, the associated methods of flexible sheets and pedestal designs according to actual needs; And the structure of flexible sheets and shape also can design according to actual needs, by chalk dust backstop storing more easily.Flexible sheets in the present embodiment adopts wear-resisting elastomeric material preparation; When using blackboard eraser, because the magneticaction of magnetic part changes rub body Mian position, flexible sheets and rub body face touch blackboard simultaneously, have certain spacing between flexible sheets and rub body, and accommodating cavity is unlimited.During this blackboard eraser is taken down or after taking off, flexible sheets is touched mutually with rub body, accommodating cavity is closed, and chalk dust is blocked in accommodating cavity all the time; This blackboard eraser is the used time not, also can directly be adsorbed on blackboard, and this blackboard eraser neither can be lost like this, while also facilitating wiping, finds.

During wiping, only need promote gently this blackboard eraser it is slided on blackboard, can be by letter written with chalk wiped clean, the chalk dust after wiping can be blocked in accommodating cavity.Due to backstop the storage effect of flexible sheets, the chalk dust all the time not meeting outer effusion accommodating cavity of gear in accommodating cavity; Use after a period of time, only need this blackboard eraser to take off from blackboard, in cleaning pedestal, the chalk dust of accommodating cavity can repeat to use again.

According to said structure and use characteristic, embodiment bis-as shown in Figure 6, and when magnetic part is fixed on pedestal, this embodiment omits the setting of spring, also can change by rub body Mian position, and the gap between rub body and flexible sheets is opened or closed.Above-mentioned rub body Mian position changes by self sponge material, and after pedestal is under pressure, is passed to rub body and realizes.According to the structure of above-described embodiment two and principle, embodiment tri-is as shown in Figure 7 also like this; , as shown in Figure 8, the magnetic part structure of embodiment tri-is improved, magnetic part also can be arranged in rub body meanwhile.As shown in Figure 9, according to prior art feature, embodiment bis-as shown in Figure 6 also can be provided with in the another side of pedestal wet type rub body, and this side group seat is provided with lid, and lid is provided with storage cap, is provided with storage chamber in lid.Thereby be convenient to the storage in lid of chalk, neutral pen, and this blackboard eraser is wiped and is used as wet dry Double-purpose blackboard.

Technological means of the present utility model, and unrestricted technical scope of the present utility model, those skilled in the art do apparent improvement in conjunction with common practise to the utility model, within all falling into technical scope of the present utility model.As increased the structure of the existing similar blackboard erasers such as fan or static in the structure of this blackboard eraser, further improve absorption and the collecting effect of its chalk dust.

Claims

1. a dust-proof blackboard eraser, this blackboard eraser comprises rub body (2) and pedestal (1), and the middle part of described pedestal has groove (11), and rub body is arranged in this groove, forms the chamber that stores chalk dust between described rub body and the inwall of described pedestal; Groove (11) the sidewall notch periphery that it is characterized in that described pedestal (1) is provided with flexible sheets (4); Rub body face is higher than the port surface of flexible sheets, while pressing pedestal, rub body Mian position changes, flexible sheets and rub body are touched blackboard simultaneously, the port surface of rub body face and flexible sheets is with high, between rub body and flexible sheets, form gap, accommodating cavity opens wide, and chalk dust enters in accommodating cavity by the gap between rub body and flexible sheets; The inwall of described rub body, pedestal, flexible sheets are jointly formed for backstop and store the accommodating cavity of chalk dust.

2. a dust-proof blackboard eraser, this blackboard eraser comprises rub body (2) and pedestal (1), and the middle part of described pedestal has groove (11), and rub body is arranged in this groove, forms the chamber that stores chalk dust between described rub body and the inwall of described pedestal; It is characterized in that described pedestal (1) above or in described rub body (2) is also provided with for described blackboard eraser being adsorbed on to the magnetic part (3) on blackboard, the groove of pedestal (11) sidewall end notch periphery is provided with flexible sheets (4); Rub body face is higher than the port surface of flexible sheets, when magnetic part and blackboard adhesive, rub body Mian position changes, flexible sheets and rub body are touched blackboard simultaneously, the port surface of rub body face and flexible sheets is with high, between rub body and flexible sheets, form gap, accommodating cavity opens wide, and chalk dust enters in accommodating cavity by the gap between rub body and flexible sheets; The inwall of described rub body, pedestal, flexible sheets are jointly formed for backstop and store the accommodating cavity of chalk dust.

3. dust-proof blackboard eraser according to claim 1 and 2, is characterized in that described rub body (2) is arranged on the middle part of described pedestal (1), and described accommodating cavity is looped around described rub body around.

4. dust-proof blackboard eraser according to claim 1 and 2, is characterized in that being provided with elastomer between described rub body (2) face and the groove (11) of pedestal (1).

5. dust-proof blackboard eraser according to claim 1 and 2, is characterized in that the rub body mask of gap location between described rub body (2) and flexible sheets (4) is gradient.

6. dust-proof blackboard eraser according to claim 1 and 2, is characterized in that described flexible sheets (4), for windshield wiper blade formula rubber catch, is provided with the catch of flexible sheets in described accommodating cavity.

7. dust-proof blackboard eraser according to claim 2, is characterized in that described magnetic part (3) is fixed on described pedestal (1) upper, or between described rub body (2) and described pedestal, or be embedded in described rub body.

8. dust-proof blackboard eraser according to claim 1 and 2, is characterized in that described pedestal (1) is semielliptical shape.

9. dust-proof blackboard eraser according to claim 1 and 2, is characterized in that the another side of described pedestal (1) is provided with wet type rub body, and this side group seat is provided with lid, and lid is provided with storage lid, is provided with storage chamber in lid.