CN2135478Y

CN2135478Y - Dustless blackboard eraser

Info

Publication number: CN2135478Y
Application number: CN 92228604
Authority: CN
Inventors: 熊峻; 熊和华
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-07-22
Filing date: 1992-07-22
Publication date: 1993-06-09
Anticipated expiration: 2002-07-22

Abstract

The utility model relates to a dustless blackboard eraser used for culture and education, comprising an outer shell, a frame, a dust collecting hopper and a rotating wheel. The utility model is characterized in that the edges of both the top and the lower ends of the outer shell are attached with an upper brim and a lower brim, and the upper brim and the lower brim are of soft glue material; a set of dust collecting sheets in a V shape and a V-shaped brush bristle bundle are fastened on the frame, the brush bristle bundle is slightly longer than the dust collecting sheets, and the lower bottom of the brush bristle bundle is provided with a bakie which is communicated with the dust collecting hopper. The utility model has the advantages of simple structure, low cost and high dust collecting efficiency; when a blackboard is erased, the dustless blackboard eraser is basically in a sealed state, no power and dust are raised, and the dustless blackboard eraser can effectively prevent teachers and students from occupational diseases caused by power and dust.

Description

Dustless blackboard eraser

The utility model relates to a kind of school supply and stationery, specifically, relates to a kind of dustless black wiping.

Commercially available ordinary blackboard eraser exists the problem of dust from flying when erasing the board at present, and serious threat teacher and student's is healthy, also has a kind of electric dust-less blackboard to wipe, owing to need often to change battery, cost is also high, so be difficult to popularize.Patent Office of the People's Republic of China announces a kind of control of dust blackboard eraser on January nineteen ninety 17, application number 89210477.5, form by base body, wiping piece, dust compartment and blackboard eraser lid, the frame of box-shaped base body, constitute by frame entity and the affixed following stiffening gluing nylon wire of stretching on it, its shortcoming is: because poor sealing still has flour dust overflow when erasing the board.

The purpose of this utility model is to provide a kind of dust-free black board eraser simple in structure.

For achieving the above object, the utility model adopts following technical scheme: it has the shell of an opening, be provided with framework, dust compartment in the shell, the right and left also has a runner respectively in the shell, it is characterized in that: the edge at the two ends up and down of shell is with the last eaves and the following eaves of flexible glue material, one group of acclivitous " V " shape control of dust sheet lower end is fixed on the framework, also be fixed with acclivitous bristle tuft on the framework between the control of dust sheet, bristle tuft is slightly long than the control of dust sheet, and the bristle tuft lower bottom part is provided with the bakie that communicates with dust compartment.Above-mentioned runner rear portion is provided with contacted with it elasticity and brushes lightly piece, and also there is one deck flexible rubber ring on the runner top layer.

The utility model compared with prior art has following advantage:

1, simple in structure, cheap.

Substantially be in sealing state when 2, erasing the board, no dust is raised outward, the dust catching efficiency height.

Fig. 1 is the utility model front view;

Fig. 2 is the utility model vertical view;

Fig. 3 is the utility model side view;

Fig. 4 is a blackboard eraser lid schematic diagram of the present utility model.

Drawing is explained: shell 1, runner 2, go up eaves 3, bristle tuft 4, control of dust sheet 5, bakie 6, down eaves 7, brush lightly piece 8, dust compartment 9, wheel shaft 10, cushion rubber 11, framework 12, blackboard eraser lid 13, dust drain tank 14.

The utility model is described in further detail below in conjunction with accompanying drawing:

As shown in Figure 1, 2, 3, shell 1, go up eaves 3, eaves 7, framework 12 are structure as a whole down, wherein go up eaves 3 and following eaves 7 and make for the flexible glue material, neither damage blackboard, can make middle bristle tuft 4 again is sealing state when the wiping word; A runner 2 is established at the two ends, the left and right sides, the inside of shell 1 respectively, and shell 1 is thin slightly than runner 2, does not contact blackboard, the place of holding can slightly be spill, the upper and lower side rotating shaft 10 of runner 2 is fixed on the framework 12, and the skin of runner 2 has one deck flexible rubber ring 11, and the rear portion of runner 2 is provided with the elasticity of contact with it and brushes lightly piece 8.Bristle tuft 4 V-shaped arrangements as shown in Figure 1, are inclined upwardly slightly, as shown in Figure 3, the lower end is fixed on the framework 12, and the also V-shaped parallelism structural of control of dust sheet 5 is arranged, short slightly than bristle tuft 4, by the bristle tuft 4 of upper end, but slightly from some distances, the lower end is fixed on the framework 12, also is inclined upwardly, and the angle of inclination is big than bristle tuft 4, the lower bottom part of bristle tuft 4 has the oblique bakie 6 that communicates with dust compartment 9, dust compartment 9 is between framework 12 and shell 1, and the lower end is a spill, and a dust drain tank 14 is arranged.Blackboard eraser covers 13 shapes as shown in Figure 4, matches with blackboard eraser.

Dedusting function of the present utility model be achieved in that hold the right and left slightly the shell 1 of spill move when wiping word, runner 2 rotates.Because of the skin of runner 2 is a cushion rubber 11, do not injure blackboard, also can after rotating 180 °, runner 2 be brushed lightly piece 8 to brush off, fall into dust compartment 9.Wipe in the dirt process, V-arrangement bristle tuft 4 has the function of conventional blackboard eraser, behind dust releasing, slip into bakie 6 along control of dust sheet 5 and enter dust compartment 9 again, and last eaves 3 and following eaves 7 are the flexible glue material that does not injure blackboard and make, they and two runners 2 that cushion rubber 11 is arranged are when wiping the clear plate of word, make blackboard eraser be in sealing all the time, so in the clear plate process, no dust is raised outward, after finishing using, dust-free black board eraser is put into blackboard eraser lid 13, dust just falls in blackboard eraser lid 13, in order to removing by dust drain tank 141.

Claims

1, a kind of dust-free black board eraser, it has the shell of an opening, be provided with framework, dust compartment in the shell, the right and left also has a runner respectively in the shell, it is characterized in that: the edge at the two ends up and down of shell 1 is with the last eaves 3 and the following eaves 7 of flexible glue material, one group of acclivitous " V " shape control of dust sheet 5 lower end is fixed on the framework 12, also be fixed with acclivitous bristle tuft 4 on the framework 12 between the control of dust sheet 5, bristle tuft 4 is slightly long than control of dust sheet 5, and bristle tuft 4 lower bottom parts are provided with the bakie 6 that communicates with dust compartment 9.

2, dust-free black board eraser according to claim 1 is characterized in that: runner 2 rear portions are provided with the elasticity of contact with it and brush lightly piece 8, and also there is layer flexible rubber ring 11 on runner 2 top layers.