CN208263815U

CN208263815U - A kind of teacher's teaching anti-dust chalk sleeve

Info

Publication number: CN208263815U
Application number: CN201820748612.2U
Authority: CN
Inventors: 章建军
Original assignee: Chongqing City Intellectual Property Road Science And Technology Co Ltd
Current assignee: Chongqing City Intellectual Property Road Science And Technology Co Ltd
Priority date: 2018-05-20
Filing date: 2018-05-20
Publication date: 2018-12-21
Anticipated expiration: 2028-05-20

Abstract

The utility model relates to teaching equipment technical fields, a kind of chalk sleeve is provided, it can adapt to the chalk of different size length, it is easy to use, reduce the injury of chalk dust, including tubular inner liner body, jacket tube body, outer sleeve body covers on the outside of interior set body, the front end of interior set body is provided with multiple cramping bodies, cramping body is less than it far from the wall thickness at interior set body in the wall thickness at interior set body, outer sleeve body can rotate on cramping body, continue to form the relatively rear thick part in cramping body front end forward and squeeze, cover in this way cramping body and the intracorporal chalk of inner sleeve can by cramping body extruding and be fixed, outer sleeve body can be used for the gripping of finger, chalk is avoided directly to contact with finger, in addition, the rubber sleeve being linked together with it is provided at the rear end nozzle of outer sleeve body, rubber sleeve can wrap the end of chalk, what reduction was contacted with finger Probability greatly reduces the contaminated possibility of finger.

Description

A kind of teacher's teaching anti-dust chalk sleeve

Technical field

The utility model relates to teaching equipment technical field more particularly to a kind of teacher teaching anti-dust chalk sleeves.

Background technique

Chalk is most widely used tool in daily teaching, is the essence of knowledge, in order to which student being capable of more preferable volume understanding With memory, always can ceaselessly be write on blackboard teacher's upper class hour, calculate, however chalk to teacher's bring injury be also with What day all increased, it is embodied in writing aspect first, in the class, chalk dust is inevitably stained on hand teacher, on arm, Chalk is usually made by gypsum, and chemical component is calcium sulfate, and since calcium sulfate is insoluble in water, chalk dust is to skin membrane spinosity Swash effect, sweat solution can be met, generates alkaline matter, the environment of human skin existence is weak acid environment, and chalk dust can generate alkali Property substance, the basic living environment of skin can be destroyed, chalk dust makes skin become dry, coarse, and with titillation, makes Human body is uncomfortable, and serious person can cause acne, epifolliculitis, pyoderma, chapped skin and a large amount of trichomadesis, influence and disturb religion Teacher works normally and life, so there is " chalk hand " this occupational disease in many teachers, it is straight with limb skin in order to prevent chalk Bring injury is contacted, needs to be completely cut off by some tools, has similar chalk sleeve in actual life, but uses Inconvenience, shape are more sturdy, it has not been convenient to hold, and not adapt to the chalk of different building shape length.

Utility model content

(1) technical problems to be solved

The utility model aim is to provide a kind of chalk sleeve, can adapt to the chalk of different size length, letter easy to use It is single, it can easily be accommodated and hold, reduction chalk dust is infected with to be injured to limb skin bring.

(2) technical solution

In order to solve the above technical problems, the utility model provides a kind of teacher's teaching anti-dust chalk sleeve, including in tubulose Body, jacket tube body, the outer sleeve body can cover in the outside of the interior set body, and the front end of the interior set body is provided with multiple The front end of cramping body, the cramping body and interior set body is linked together, and the multiple cramping body is in separation shape between each other State, the cramping body are less than it far from the wall thickness at interior set body, on the outer wall of the interior set body in the wall thickness at the interior set body It is provided with external screw thread, internal screw thread corresponding with external screw thread on interior set body outer wall is provided on the inner wall of the outer sleeve body, it is described outer Body can be moved forward and backward by rotating opposite interior set body around the interior set body, and such outer sleeve body can rotate on cramping body, Cramping body is wrapped up, continues part formation extruding that forward can be thicker to cramping body front end, is covered in this way in cramping body and inner sleeve Intracorporal chalk can by cramping body extruding and be fixed, chalk is fixed and entangles, and the chalk leaked out in cramping body outer end can To be used to write, outer sleeve body can be used for the gripping of finger, and chalk is avoided directly to contact with finger, reduces finger and is polluted by chalk Probability, in addition, being provided with the rubber sleeve being linked together with it at the rear end nozzle of the outer sleeve body, there are one for the rubber sleeve Determine plasticity and elasticity, after such chalk is inserted in, the rubber sleeve can be wrapped the end of chalk, even if the end of chalk It comes up long, rubber sleeve can be elongated relatively, can still be lived chalk powder end cap, i.e., entire chalk is used in addition to front end In the end write, rest part is all wrapped up, and is reduced the probability contacted with finger, is greatly reduced the contaminated possibility of finger Property.

Further, it is provided with multiple tiny double wedges on the medial surface of the cramping body, can increase when being contacted with chalk Add the frictional force between chalk, avoids chalk sliding when writing.

Further, the outside of the outer sleeve body is evenly arranged with multiple recess in one week, is used to increase patch when finger grip Conjunction property.

Further, the quantity for the recess that a circle is uniformly arranged on the outside of the outer sleeve body is 3, according to the gripping appearance of ordinary person Gesture respectively corresponds thumb, the gripping of index finger and middle finger.

As another embodiment, one snare of outside of the outer sleeve body has rubber spacer, when can increase finger grip Comfort level, increase and finger between frictional force, avoid sliding.

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 utility model embodiment side cross-sectional structural schematic diagram.

Fig. 2 is the side cross-sectional structural schematic diagram of the utility model embodiment use state.

Fig. 3 is Section A-A structural schematic diagram in the utility model embodiment.

Fig. 4 is section B-B structural schematic diagram in the utility model embodiment.

Specific embodiment

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

A kind of teacher's teaching anti-dust chalk sleeve, as shown in Fig. 1 institute, including tubular inner liner body 1, jacket tube body 2 are described Outer sleeve body 2 can cover in the outside of the interior set body 1, and the front end of the interior set body 1 is provided with multiple cramping bodies 11, the clamping The front end of body 11 and interior set body 1 is linked together, and the multiple cramping body 11 is in discrete state between each other, in Fig. 3 Shown in Section A-A figure, the cramping body 11 is less than it far from the wall thickness at interior set body 1 in the wall thickness at the interior set body 1, described It is provided with external screw thread 12 on the outer wall of interior set body 1, is provided on the inner wall of the outer sleeve body 2 and external screw thread on 1 outer wall of interior set body 12 corresponding internal screw threads 21, the outer sleeve body 2 can be moved forward and backward by rotating opposite interior set body 1 around the interior set body 1, in this way Outer sleeve body 2 can rotate on cramping body 11, and cramping body 11 is wrapped up, and continue portion that forward can be thicker to 11 front end of cramping body Point formed squeeze, cover in this way the chalk in cramping body 11 with interior set body 1 can by cramping body 11 extruding and be fixed, chalk is It is fixed and entangles, as shown in Fig. 2 use state lower section figure, leaking out the chalk in 11 outer end of cramping body can be used to write, outside Body 2 can be used for the gripping of finger, and chalk is avoided directly to contact with finger, reduce the probability that finger is polluted by chalk, in addition, Be provided with the rubber sleeve 3 being linked together with it at the rear end nozzle of the outer sleeve body 2, the rubber sleeve 3 there are certain plasticity with Elasticity, after such chalk is inserted in, the rubber sleeve 3 can be wrapped the end of chalk, even if the end of chalk is come up Long, rubber sleeve 3 can be elongated relatively, can still be lived chalk powder end cap, i.e., entire chalk is in addition to front end is for writing The end of word, rest part are all wrapped up, and are reduced the probability contacted with finger, are greatly reduced the contaminated possibility of finger.

Further, multiple tiny double wedges 13 are provided on the medial surface of the cramping body 11, it can when being contacted with chalk With the frictional force between increase and chalk, chalk sliding when writing is avoided.

Further, the outside of the outer sleeve body 2 is evenly arranged with multiple recess 22 for one week, for increasing when finger grip Stickiness.

Further, the quantity for the recess 22 that 2 outside of outer sleeve body is uniformly arranged for one week is 3, as B-B is cut in Fig. 4 Shown in the figure of face, according to the grip of ordinary person, respectively correspond and thumb, the gripping of index finger and middle finger.

As another embodiment, one snare of outside of the outer sleeve body 2 has rubber spacer 4, can increase finger grip When comfort level, increase and finger between frictional force, avoid sliding.

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

The anti-dust chalk sleeve 1. a kind of teacher imparts knowledge to students, it is characterised in that: including tubular inner liner body (1), jacket tube body (2), institute Stating outer sleeve body (2) can cover in the outside of the interior set body (1), and the front end of the interior set body (1) is provided with multiple cramping bodies (11), the front end of the cramping body (11) and interior set body (1) is linked together, and the multiple cramping body (11) is located between each other In discrete state, the cramping body (11) is less than it far from the wall thickness at interior set body (1) in the wall thickness at interior set body (1), It is provided with external screw thread (12), is provided on the inner wall of the outer sleeve body (2) and interior set body (1) on the outer wall of the interior set body (1) The corresponding internal screw thread (21) of external screw thread (12) on outer wall, the outer sleeve body (2) can be opposite by rotating around the interior set body (1) Interior set body (1) is moved forward and backward, and the outer sleeve body (2) can rotate on cramping body (11), and cramping body (11) are wrapped up, continue to Before can be thicker to cramping body (11) front end part formed and squeeze, be provided at the rear end nozzle of the outer sleeve body (2) and its The rubber sleeve (3) being linked together, for the rubber sleeve (3) there are certain plasticity and elasticity, the rubber sleeve (3) can be by chalk End wraps.
The anti-dust chalk sleeve 2. teacher according to claim 1 imparts knowledge to students, it is characterised in that: the inside of the cramping body (11) Multiple tiny double wedges (13) are provided on face.
The anti-dust chalk sleeve 3. teacher according to claim 2 imparts knowledge to students, it is characterised in that: the outside of the outer sleeve body (2) It is evenly arranged within one week multiple recess (22).
The anti-dust chalk sleeve 4. teacher according to claim 3 imparts knowledge to students, it is characterised in that: one on the outside of the outer sleeve body (2) The quantity for the recess (22) being uniformly arranged in week is 3.
The anti-dust chalk sleeve 5. teacher according to claim 4 imparts knowledge to students, it is characterised in that: the outside of the outer sleeve body (2) One snare has rubber spacer (4).