CN2611181Y - Multi-functional black-board eraser - Google Patents

Abstract

A multifunctional blackboard eraser comprises a sponge (1), a sponge (2), a hand handle (3), wherein, the cross section of the sponge (1) is a square, a sponge box (2) is provided with a recessed hand handle notch (12), the back portion of the sponge box (2) is provided with a hand handle socket (4), pointed teeth (15) used for fixing the sponge is arranged at the sponge box opening, a hinge and a switch are arranged on the box wall of the sponge box (2), a plug (5) is arranged on the hand handle (3) whose inner chamber is provided with inner screws, outer screws connected with the inner screws of the hand handle is arranged on the outer portion of an extensible pointer (8), the bottom portion of the hand handle 3 is provided with a chalk sleeve 10 which is connected with the bottom portion of the hand handle 3 through screws at an adjusting position 10, the chalk sleeve can be extended by rotating the adjusting position 10, six pieces are slightly extended out of the opening position of the chalk sleeve to tightly clip the chalk. The multifunctional blackboard eraser has the characteristics of multifunction integration, high efficiency, low cost and convenient use.

Description

Multifunctional blackboard eraser

Technical field

The utility model relates to teaching aid, particularly blackboard eraser.

Background technology

Existing blackboard eraser function singleness, utilization factor is low, perishable, easy dirty hand.Under general condition, dust removal ability descended after a common blackboard eraser used a term, and the very difficult examination of wiping again is clean, not only influences student eyesight but also influence teachers and students' health.

Summary of the invention

The purpose of this utility model is to provide a kind of gathering multi-function in integral whole, the efficient height, and cost is low, blackboard eraser easy to use.

The purpose of this utility model is realized by following technical scheme, it comprises blackboard eraser sponge box, sponge, the sponge box is provided with handle, be provided with internal thread in the handle cavity, connect the flexible teacher's pointer that has pilot lamp by internal thread, the teacher's pointer top is provided with pilot lamp, be provided with the tinsel contact-making switch around the pilot lamp, the teacher's pointer bottom is provided with battery.Be provided with a chalk sleeve in the bottom of handle, chalk sleeve is plugged on the handle bottom, and chalk sleeve is provided with rotation adjusting place, pulls up chalk sleeve during use, and adjusting place of rotation chalk sleeve can make chalk stretch or collect into and go in the cover.The chalk sleeve opening part turns up and is the 4-8 sheet, is used to tighten chalk.

When the utility model used, feel was fine, if student's height is little, plugs handle and also can easily use.When needing chalk, chalk sleeve is pulled up in the chalk insertion cover, powder length is regulated in rotation.When using teacher's pointer, from handle, screw out, elongate then, when the teacher's pointer head touches blackboard, the bending of steel wire switch, energized, pilot lamp is bright, is convenient to teaching.Because the sponge cross section is a square, can change the sponge face.

Description of drawings

Accompanying drawing 1,4 is the utility model sponge box structural representation;

Accompanying drawing 2 is the flexible teacher's pointer structural representation of the utility model;

Accompanying drawing 3 is the utility model grip structure synoptic diagram;

Embodiment

Accompanying drawing 1,2,3,4 is a specific embodiment of the present utility model.It by sponge 1, sponge box 2, handle 3, form, the xsect of sponge 1 is a square, sponge box 2 is provided with the recessed breach 12 of shaking hands, sponge box 2 backs are provided with handle socket 4, sponge box mouth is provided with the fixedly pointed tooth 15 of sponge, the box wall of sponge box 2 is established hinge 16 and switch 13,14, handle 3 is provided with plug 5, the handlebar stem inner chamber is provided with screw thread, telescopic teacher's pointer 8 outsides are provided with screw thread and are connected with the handle thread in inner cavity, teacher's pointer 8 tops are provided with pilot lamp 7, are provided with tinsel contact-making switch 6 around the pilot lamp, and teacher's pointer 8 bottoms are provided with battery 11.The chalk sleeve 9 of pegging graft in the bottom of handle 3, chalk sleeve 9 are provided with rotation adjusting place 10, and rotation adjusting place 10 can make chalk sleeve flexible, and it is 6 that chalk sleeve 9 opening parts slightly turn up, and is used to tighten chalk.

Claims (2)

1, one kind of multiple function blackboard erasers, it is by sponge (1), sponge box (2), handle (3), form, it is characterized in that: the xsect of sponge (1) is square, sponge box (2) is provided with the recessed breach of shaking hands (12), sponge box (2) back is provided with handle socket (4), sponge box mouth is provided with the fixedly pointed tooth of sponge (15), the box wall of sponge box (2) is established hinge (16) and switch (13,14), handle (3) is provided with plug (5), the handlebar stem inner chamber is provided with internal thread, telescopic teacher's pointer (8) outside is provided with external thread and is connected with the handle thread in inner cavity, teacher's pointer (8) top is provided with pilot lamp (7), be provided with tinsel contact-making switch (6) around the pilot lamp, teacher's pointer (8) bottom is provided with battery (11).

2, blackboard eraser according to claim 1, it is characterized in that: the chalk sleeve (9) of pegging graft in the bottom of handle (3), chalk sleeve bottom are provided with regulates screw thread (10), and rotation adjusting place (10) can make chalk flexible, the chalk sleeve opening part slightly turns up and is the 4-8 sheet, is used to tighten chalk.

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