CN201244993Y

CN201244993Y - Multifunctional chalk sheath

Info

Publication number: CN201244993Y
Application number: CNU2008200143221U
Authority: CN
Inventors: 王譞
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-07-21
Filing date: 2008-07-21
Publication date: 2009-05-27
Anticipated expiration: 2018-07-21

Abstract

The utility model relates to a multifunctional chalk sheath which comprises a retractable sheath body. The sheath body is in a hollow cylindrical body structure, the inner diameter of the sheath body is equal to the diameter of a common chalk; one end without the chalk of the sheath body is provided with a glass cover, and the inner part of the glass cover is provided with an illuminating device; the outer surface of the end with the chalk of the sheath body is provided with a longitudinal groove, and the top end of the groove is axially connected with a retractable bar which can be completely put in the groove; the illuminating device is formed by the connection in series of a small bulb, a battery and a switch. When the multifunctional chalk sheath is used, the teacher can insert the chalk into the front end of the sheath body and the multifunctional chalk serves as the chalk sheath; when the chalk is not inserted into the multifunctional chalk sheath, the illuminating device at the tail end of the sheath body is enabled to illuminate; when the multifunctional chalk sheath is used for drawing a circle, the retractable bar is taken out from the groove, the function of drawing the circle can be realized by rotating the sheath body with the retractable bar as the fulcrum bar. The utility model has the advantages of simple structure, convenient use, reasonable structure, addition of new function of the chalk sheath and convenience being brought to the teachers.

Description

The multifunctional chalk cover

Technical field the utility model relates to a kind of teaching aid, especially a kind of multifunctional chalk cover.

When writing writing on the blackboard on class, the background technology instructors suffers erosion for the skin that prevents hand, usually use chalk sleeve, but existing chalk sleeve only provides the function that inserts chalk, the auxiliary function that does not have other, for example: existing chalk sleeve does not possess the function of flashlight, does not possess the function of picture circle, if instructors is at the blackboard upper drawing circle yet, get other and be equipped with compasses, very inconvenient.

The summary of the invention the purpose of this utility model has overcome above-mentioned said deficiency, and a kind of multifunctional chalk cover is provided, and is used to solve existing chalk sleeve function singleness, can not satisfy the problem that instructors is used needs.

For achieving the above object, the utility model multifunctional chalk cover comprises flexible body, body hollow circuit cylinder body structure, and its interior diameter equals the diameter of common chalk; End at the non-placement chalk of body is provided with cloche, and cloche inside is provided with lighting device; Offer longitudinal fluting at the cover external surface to an end of placing chalk, and the top axle connection expansion link of groove, expansion link can be placed in the groove fully; Lighting device is made of miniature bulb, battery and switch series connection.

After adopting said structure, during use, instructors can insert chalk the front end at body, adjusts the length of body, with more convenient to use; If when not inserting chalk, also can enable the lighting device lighting of body end; Drawing bowlder, expansion link can be taken out in groove, is pole with the expansion link, and the rotation body can be realized the function of picture circle.

The utility model has the advantages that: simple in structure, easy to use, structure has rationally invested the new function of chalk sleeve, brings greater convenience for the use of instructors.

Description of drawings Fig. 1 is the overall structure schematic diagram of the utility model multifunctional chalk cover.

The specific embodiment as shown in Figure 1, the utility model multifunctional chalk cover comprises flexible body 1, body 1 hollow circuit cylinder body structure, and its interior diameter equals the diameter of common chalk; End at body 1 non-placement chalk is provided with cloche 2, and cloche 2 inside are provided with lighting device 3; Offer longitudinal fluting 4 at body 1 outer surface to an end of placing chalk, and the top axle connection expansion link 5 of groove 4, expansion link 5 can be placed in the groove 4 fully; Lighting device 3 is made of miniature bulb, battery and switch series connection.

Claims

1, a kind of multifunctional chalk cover comprises flexible body (1), it is characterized in that: body (1) hollow circuit cylinder body structure, and its interior diameter equals the diameter of common chalk; End at the non-placement chalk of body (1) is provided with cloche (2), and cloche (2) inside is provided with lighting device (3); Offer longitudinal fluting (4) at body (1) outer surface to an end of placing chalk, and the top axle connection expansion link (5) of groove (4), expansion link (5) can be placed in the groove (4) fully.

2, a kind of multifunctional chalk cover according to claim 1 is characterized in that: lighting device (3) is made of miniature bulb, battery and switch series connection.