CN103481706B - Eraser with dust collector can be removed - Google Patents

Abstract

The invention discloses a dust-removable blackboard eraser, which comprises a casing, a wiping belt, a rotating drum, a rotating shaft, a support plate, a dust brush, a rear cover and a connecting piece. The casing is a cavity, the cavity has an opening, and there is a back cover on the opposite side of the opening, and the back cover is connected to the cavity through the connecting piece to cover the casing. A pair of rotating shafts are connected in parallel to the housing, and the rotating cylinders are respectively sleeved on the rotating shafts. The wiping belt is a closed soft belt, which is sleeved on the two rotating cylinders, and one side of the wiping belt is sleeved The straight section stretches out of the opening of the housing and is used for wiping the blackboard. A support plate is arranged between the two rotating drums, and the two ends of the support plate are fixedly connected to the shell, and are used to support the straight section of the wiping belt protruding from the opening of the shell. The brush body of the dust accumulation brush is fixed on the back cover, and the bristles of the dust accumulation brush are in contact with the straight section on the other side of the wiping belt. The blackboard eraser moves horizontally to wipe the blackboard, and moves up and down to remove accumulated dust, which is convenient and practical, and greatly reduces dust pollution.

Description

dust removal blackboard eraser

technical field

The invention relates to a teaching tool, in particular to a blackboard eraser which can conveniently remove the dust accumulated on a wiping cloth.

Background technique

The blackboard eraser is an indispensable tool for teaching work, but after a period of use, a thick layer of chalk dust will accumulate on the felt cloth of the blackboard eraser. When you want to continue using it, you often have to find a place to knock other objects to shake off the dust. . This mode of use is very inconvenient and easily causes dust pollution. Though also have many blackboard eraser designs that alleviate dust pollution, as Chinese patent document, publication number is CN103213437A, CN102950943A, but their most of designs are all aimed at wiping dust, also do not remove the design of wiping cloth accumulation of dust. Chinese patent document, publication number is the patent of CN101746194A, discloses a kind of design by constantly changing wiping cloth by two rotating shaft cores, the advantage is that dust accumulation can be rolled into the insert box to reduce chalk dust flying, but the disadvantage is This invention can't remove the accumulated dust of wiping cloth in time, needs constantly to change wiping cloth. International patent, the patent No. GN2090123A discloses an invention that transfers the accumulated dust attached to the wiper belt to the box for removal by rotating the wiper belt, and has the function of removing dust from the wiper cloth. But this invention is in the reciprocating swing process of wiping, and one direction is used for wiping the blackboard eraser and the other direction is used for removing dust accumulation. The actual use of the blackboard eraser shows that the blackboard eraser that has not removed the dust can be wiped for a period of time, that is to say, there is a process for the blackboard to be too dusty to wipe normally, and there is no need to wipe it to remove the dust. Only half of the wiping action of this design is used to wipe the blackboard, which greatly affects the work efficiency. Moreover, the discontinuity of wiping will also affect the operation and wiping effect.

Contents of the invention

The object of the present invention is to provide a blackboard eraser that can remove accumulated dust and is easy to use in view of the above problems.

The technical solution of the present invention is: a dust-removable blackboard eraser, comprising a housing, a wiping belt, a rotating cylinder, a rotating shaft, a brace, a dust brush, a back cover, and a connecting piece. The casing is a cavity, the cavity has an opening, and there is a back cover on the opposite side of the opening, and the back cover is connected to the cavity through the connecting piece to cover the casing. A pair of rotating shafts are connected in parallel to the housing, and the rotating cylinders are respectively sleeved on the rotating shafts. The wiping belt is a closed soft belt, which is sleeved on the two rotating cylinders, and one side of the wiping belt is sleeved The straight section stretches out of the opening of the housing and is used for wiping the blackboard. The cavity formed by the housing leaves a space for ash storage at the upper and lower ends of the wiping belt perpendicular to the axial direction of the drum. A support plate is arranged between the two rotating drums, and the two ends of the support plate are fixedly connected to the shell, and are used to support the straight section of the wiping belt protruding from the opening of the shell. The brush body of the dust accumulation brush is fixed on the back cover, and the bristles of the dust accumulation brush contact with the straight section on the other side of the wiping belt.

When wiping the blackboard, the blackboard eraser is held vertically, and the wiping process is a horizontal movement, and the force direction of the wiping belt 2 is the same as the axial direction of the drum 3, so the wiping belt 2 will not rotate around the two drums 3, Affects brushing. When the wiping tape 2 accumulates dust and thickens, the blackboard eraser moves up and down. At this time, the force direction of the wiping tape 2 is the same as the circumferential direction of the drum 3, so that the wiping tape 2 rotates around the two drums 3, and the wiping tape 2 rotates During the process, the accumulated dust is brought into the housing 1, brushed off by the dust accumulation brush 6, and falls into the cavity of the blackboard eraser. When the accumulated dust brushed off in the cavity increases, the connector 8 can be opened, the back cover 7 is taken off, the accumulated dust is poured out and the dust accumulated brush 6 is cleaned. The operation process is simple, and the dust pollution is greatly reduced because the dust is brushed off in the casing.

The beneficial effects of the present invention are:

1. When the blackboard eraser of the present invention is in use, wiping and dust removal are controllable. When wiping, it swings left and right, just like a conventional blackboard eraser, and only needs to move the eraser up and down when dust removal is required. That is to say, the blackboard is brushed by horizontal motion, and the dust is removed by vertical motion, which is flexible and convenient to operate.

2. The present invention does not need a one-way movement device (such as a ratchet and pawl device), which simplifies the mechanism.

3. The present invention only needs one ash discharge door (i.e. the back cover). When the back cover is opened, the dust accumulation brush is also brought out, so that it is convenient to pour out the chalk dust in the casing and remove the chalk dust on the dust accumulation brush.

Description of drawings

Figure 1 is a front view of the present invention.

Fig. 2 is a sectional view along the direction A-A of Fig. 1 .

Fig. 3 is a cross-sectional view along B-B direction of Fig. 2 . .

Fig. 4 is a cross-sectional view along C-C direction of Fig. 2 .

In Figure 1, Figure 2, Figure 3, and Figure 4: 1. Shell, 1a. Opening, 2. Wiping belt, 2a. Straight section on one side of the wiping belt, 2b. Straight section on the other side of the wiping belt, 3. Drum, 4. Rotating shaft, 5. Support plate, 6. Dust accumulation brush, 6a. Bristles, 6b. Brush body, 7. Back cover, 8. Connector.

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Detailed ways

The casing 1 is a cavity, the cavity has an opening, and a back cover 7 is arranged on the opposite side of the opening, and the back cover 7 is connected to the cavity through a connecting piece 8 to cover the casing 1 . A pair of rotating shafts 4 are connected in parallel to the housing 1, and the rotating shafts 4 are respectively sleeved with rotating cylinders 3. The wiping belt 2 is a closed felt belt, which is sleeved on the two rotating cylinders 3, and the flat surface on one side of the wiping belt 2 is sleeved. The straight section 2a protrudes from the opening 1a of the housing 1 and is used for wiping the blackboard. A support plate 5 is arranged between the two drums 3 , and both ends of the support plate 5 are fixedly connected to the housing 1 for supporting the straight section 2 a on one side of the wiping belt 2 . Dust accumulation brush 6 is made up of brush body 6b and bristle 6a, and brush body 6b is fixedly connected on the back cover, and bristle 6a contacts with the straight section 2b of wiping belt 2 other sides.

The working process of the present invention: when wiping the blackboard, the blackboard eraser is held vertically, and the wiping process is a lateral movement, and the force direction of the wiping belt 2 is the same as the axial direction of the rotating cylinder 3, so the wiping belt 2 will not wind around two sides. 3 rotating cylinders affect the brushing. When the wiping tape 2 accumulates dust and thickens, the blackboard eraser moves up and down. At this time, the force direction of the wiping tape 2 is the same as the circumferential direction of the drum 3, so that the wiping tape 2 rotates around the two drums 3, and the wiping tape 2 rotates During the process, the accumulated dust is brought into the housing 1, brushed off by the dust accumulation brush 6, and falls into the cavity of the blackboard eraser. When the accumulated dust brushed off in the cavity increases, the connector 8 can be opened, the back cover 7 is taken off, the accumulated dust is poured out and the dust accumulated brush 6 is cleaned. The operation process is simple, and the dust pollution is greatly reduced because the dust is brushed off in the casing.

Claims (3)

1. one kind can be removed eraser with dust collector, comprise housing (1), wipe band (2), rotating cylinder (3), rotating shaft (4), laying dust brush (6), bonnet (7), connector (8), it is characterized in that: described housing (1) is a cavity, cavity has an opening, there is a bonnet (7) on the opposite of opening, bonnet (7) is connected on cavity by described connector (8), cover housing (1), have that a countershaft (4) is parallel to be connected on described housing (1), described rotating cylinder (3) is enclosed within this rotating shaft (4) respectively, described wiping band (2) is a closed soft ribbons, be socketed on described two rotating cylinders (3), the flat segments of wiping band (2) side after socket stretches out the opening of housing (1), for brushing blackboard, housing formed cavity perpendicular to rotating drum shaft to wiping band upper and lower side leave space to store up ash, the brush body of described laying dust brush (6) is fixed on bonnet (7), and laying dust brush (6) bristle is with the flat segments contact of wiping band (2) opposite side,

During brushing blackboard, blackboard eraser is vertically held, and brushing process is transverse movement, wipes band (2) Impact direction identical with the axis of rotating cylinder (3), therefore wipe band (2) to rotate around two rotating cylinders (3), affect brushing; When wiping band (2) laying dust and thickening, blackboard eraser moves up and down, now, wipe band (2) Impact direction identical with the circumferencial direction of rotating cylinder (3), wiping band (2) is rotated around two rotating cylinders (3), in wiping band (2) rotation process, laying dust is brought in housing (1), brushed off by laying dust brush (6), fall in blackboard eraser cavity; When brushing the laying dust fallen in cavity and increasing, connector (8) can be opened, take off bonnet (7), pour out laying dust and clear up laying dust brush (6).

2. one according to claim 1 can remove eraser with dust collector, it is characterized in that: between described two rotating cylinders (3), be provided with a fagging (5), fagging (5) two ends are fixedly connected on housing (1), for supporting the wiping band flat segments (2a) of stretching out housing (1) opening.

3. one according to claim 1 can remove eraser with dust collector, it is characterized in that: described wiping band (2) is a closed felt belt.