CN208263832U - A kind of blackboard eraser is hand-held to get rid of grey bracket - Google Patents

Abstract

The utility model relates to teaching equipment technical fields, there is provided that a kind of blackboard eraser is hand-held to get rid of grey bracket, including the first holding rod, cuff, cover board, second holding rod, cuff is fixedly connected on the end of the first holding rod, cuff can just cover the outside one week of the software friction bedding on blackboard eraser, but the outside of backboard cannot be nested into, the leading portion of cuff is fixedly installed connecting plate, the height of connecting plate is greater than the thickness of blackboard eraser upper backboard, the side of cover board is connected to the upper side edge of the connecting plate by fixed rotating shaft, the other side is fixedly connected on the end of the second holding rod, the software friction bedding on blackboard eraser is nested into cuff when use, rotating the cover again covers it on backboard, then entire blackboard eraser is clamped, firmly whipping, blackboard eraser can get rid of ash apart from the farther away place of people, it avoids with chalk dust splashes, or by Human body is sucked, is damaged to respiratory tract.

Description

A kind of blackboard eraser is hand-held to get rid of grey bracket

Technical field

It is held the utility model relates to teaching equipment technical field more particularly to a kind of blackboard eraser and gets rid of grey bracket.

Background technique

What blackboard eraser was generally done using the article of flannelette sponge etc, during using blackboard eraser, flannelette and blackboard are sent out Raw friction, to erase the chalk dust being retained on blackboard, also just plays the role of erasing the board, and blackboard eraser is common medium and small Basic teaching equipment and the witness of school-days, common blackboard eraser are mainly used for wiping chalk-writing in, With increasing for access times, blackboard eraser itself can speckle with a large amount of chalk dusts, at this moment can not only wipe clean blackboard, instead can Chalk dust is clipped on blackboard again, so blackboard eraser just needs artificially to dust off in use for some time, on being attached to Chalk dust is brushed lightly except that completely, will splash a large amount of chalk dusts during patting blackboard eraser and dusting off, for a long time by student or always Lung damage is caused after teacher's sucking, although some advanced schools begin to use novel dust-free blackboard to reduce chalk dust to teachers and students Injury, but for cost consideration, this blackboard can not be popularized largely, so imparting knowledge to students for traditional chalk, be needed Further how research reduces the harm of chalk dust, just for example brushes lightly the process except chalk dust on blackboard eraser, and can reduce powder Pen ash influences.

Utility model content

(1) technical problems to be solved

In order to solve during brushing lightly except chalk dust on blackboard eraser, chalk dust damages the utility model aim to human body The problem of, the method dusted off at a distance is specifically taken, makes blackboard eraser far from human body to the process that blackboard eraser dusts off by tool Itself reduce the injury caused by human body of splashing chalk dust.

(2) technical solution

In order to solve the above technical problems, the utility model provides, a kind of blackboard eraser is hand-held to get rid of grey bracket, including first holds Bar, cuff, cover board, the second holding rod, the utility model are suitable for those normal blackboard sassafras, and the area of backboard rubs greater than software The area of scrubbing pad layer, the prominent surrounding in software friction bedding of the outer edge of backboard, the utility model is according to such feature Design, the cuff are fixedly connected on the end of first holding rod, and the cuff can just cover the software on blackboard eraser The outside of friction bedding one week, but the surrounded area of cuff is less than the area of blackboard eraser upper backboard, and such cuff cannot be nested into The outside of backboard, the leading portion of the cuff are fixedly installed connecting plate, and the height of the connecting plate is greater than blackboard eraser upper backboard Thickness, the side of the cover board are connected to the upper side edge of the connecting plate by fixed rotating shaft, and the cover board can be around the company The upper side edge of fishplate bar rotates, and the other side of the cover board is fixedly connected on the end of second holding rod, and process for using is, Cover board is rotated far from cuff, the software friction bedding on blackboard eraser is nested into cuff, and blackboard eraser upper backboard is in set The top of hoop, then rotating the cover covers it on backboard, the backboard of such blackboard eraser, which is just fixed, is limited in the cuff and institute It states between cover board, then entire blackboard eraser is clamped, and the first holding rod and the second holding rod being connected on cuff and cover board It mutually draws close, the other end of the first holding rod and the second holding rod can be held with a hand, the blackboard eraser under the curable grip effect of hand It is clamped by firm, firmly whipping arm pats the blackboard eraser of front end on the ground or on balcony external wall, and first is hand-held Bar and the second holding rod have certain length, then blackboard eraser can get rid of ash apart from the farther away place of people, pass through making for this bracket With, can be splashed to avoid the chalk dust thrown away with, especially chalk dust can cause to hurt to avoid human body is inhaled into respiratory tract Evil.

Further, second holding rod is provided with one section of bending, Ke Yi in the end point connecting with the cover board It is bonded the second holding rod with the first holding rod, convenient for the gripping of manpower.

Further, it is fixedly installed baffle below the outer ledge of the cover board, blackboard eraser upper backboard can be blocked Outer edge can increase the clamped stability of blackboard eraser, prevent blackboard eraser from flying out during by firmly whipping.

Detailed description of the invention

The utility model is described in further detail with embodiment with reference to the accompanying drawing.

Fig. 1 is the schematic perspective view of the utility model.

Fig. 2 is the utility model side structure schematic view.

Fig. 3 is the side structure schematic view that the utility model is in clamp position.

Specific embodiment

In order to realize utility model technological means, create feature, reach purpose and effect is easy to understand, below In conjunction with embodiment, the utility model is further described.

A kind of blackboard eraser is hand-held to get rid of grey bracket, as shown in Figure 1, including the first holding rod 1, cuff 2, cover board 3, second is hand-held Bar 4, the utility model are suitable for those normal blackboard sassafras, and the area of backboard 5 is greater than the area of software friction bedding 6, back The prominent surrounding in software friction bedding 6 of the outer edge of plate 5, the utility model are designed according to such feature, and the cuff 2 is solid Surely it is connected to the end of first holding rod 1, the cuff 2 can just cover the outer of on blackboard eraser software friction bedding 6 Side one week, but the surrounded area of cuff 2 is less than the area of blackboard eraser upper backboard 5, and such cuff 2 cannot be nested into the outer of backboard 5 The leading portion of side, the cuff 2 is fixedly installed connecting plate 21, and as shown in the side view in figure 2, the height of the connecting plate 21 is greater than The thickness of blackboard eraser upper backboard 5, the side of the cover board 3 are connected to the upper side edge of the connecting plate 21 by fixed rotating shaft 31, The cover board 3 can be rotated around the upper side edge of the connecting plate 21, and the other side of the cover board 3 is fixedly connected on the second-hand On the end for holding bar 4, process for using is to rotate cover board 3 far from cuff 2, the software friction bedding 6 on blackboard eraser is nested into In cuff 2, and blackboard eraser upper backboard 5 is in the top of cuff 2, then rotating the cover 3 covers it on backboard 5, such blackboard eraser Backboard 5 be just fixed and be limited between the cuff 2 and the cover board 3, as shown in figure 3, then entire blackboard eraser is clamped, And be connected to cuff 2 and mutually drawn close with the first holding rod 1 on cover board 3 with the second holding rod 4, it is hand-held that first can be held with a hand The other end of bar 1 and the second holding rod 4, blackboard eraser is clamped by firm under the curable grip effect of hand, and firmly whipping arm makes The blackboard eraser of front end is patted on the ground or on balcony external wall, since the first holding rod 1 and the second holding rod 4 have centainly Length, then blackboard eraser can get rid of ash apart from the farther away place of people, can be to avoid the chalk dust thrown away by the use of this bracket With splashing, especially chalk dust can be damaged to avoid human body is inhaled into respiratory tract.

Further, second holding rod 4 is provided with one section of bending 41 in the end point connecting with the cover board 3, can Be bonded the second holding rod 4 with the first holding rod 1, convenient for the gripping of manpower.

Further, it is fixedly installed baffle 32 below the outer ledge of the cover board 3, blackboard eraser upper backboard can be blocked 5 outer edge can increase the clamped stability of blackboard eraser, prevent blackboard eraser by firmly whipping as shown in Figures 1 and 2 It flies out in the process, wherein Fig. 3 is clamped state to embody blackboard eraser, is not drawn into baffle 32.

Preferred embodiments of the present invention above described embodiment only expresses, the description thereof is more specific and detailed, But it cannot be understood as the limitations to the scope of the utility model；It should be pointed out that for the ordinary skill of this field For personnel, without departing from the concept of the premise utility, several deformations can also be made, improves and substitutes, these are all Belong to the protection scope of the utility model.

Claims (3)

1. a kind of blackboard eraser is hand-held to get rid of grey bracket, it is characterised in that: including the first holding rod (1), cuff (2), cover board (3), the Two holding rods (4), the cuff (2) are fixedly connected on the end of first holding rod (1), and the cuff (2) can be just Cover the outside of the software friction bedding (6) on blackboard eraser one week, but cuff (2) surrounded area is less than blackboard eraser upper backboard (5) Area, the leading portion of the cuff (2) is fixedly installed connecting plate (21), and the height of the connecting plate (21) is greater than on blackboard eraser The thickness of backboard (5), the side of the cover board (3) are connected to the upper side edge of the connecting plate (21) by fixed rotating shaft (31), The cover board (3) can rotate around the upper side edge of the connecting plate (21), and the other side of the cover board (3) is fixedly connected on described On the end of second holding rod (4).

2. blackboard eraser according to claim 1 is hand-held to get rid of grey bracket, it is characterised in that: second holding rod (4) with The end point of cover board (3) connection is provided with one section of bending (41), can make the second holding rod (4) and first when in use Holding rod (1) fitting.

3. blackboard eraser according to claim 1 is hand-held to get rid of grey bracket, it is characterised in that: the outer ledge of the cover board (3) Lower section is fixedly installed baffle (32), can block the outer edge of blackboard eraser upper backboard (5).