CN212499613U

CN212499613U - Chalk sleeve

Info

Publication number: CN212499613U
Application number: CN202020728298.9U
Authority: CN
Inventors: 陆明朗; 杜军杰; 周文; 林宇; 万晓坤
Original assignee: Ningbo Merry Art Glow Tech Co ltd
Current assignee: Ningbo Merry Art Glow Tech Co ltd
Priority date: 2020-05-07
Filing date: 2020-05-07
Publication date: 2021-02-09
Anticipated expiration: 2030-05-07

Abstract

The utility model discloses a chalk cover, but including the storing endotheca with cup joint the sleeve at the storing endotheca outside axial displacement, the one end opening of storing endotheca and be provided with the pinch-off blades along the edge at the opening part, sleeve rebound extrusion pinch-off blades inwards deform, the other end of storing endotheca be provided with the chalk sword. The utility model discloses simple structure, convenient to use can prevent effectively that the chalk from breaking, also conveniently sharpens the chalk head.

Description

Chalk sleeve

Technical Field

The utility model relates to a teaching aid field specifically is a chalk cover.

Background

The chalk is an article which is often used in class, and the existing chalk is often directly held by hands for use, so that the chalk is all chalk dust on hands, is inconvenient to clean, and is easy to break off in use, and great waste is caused.

Sometimes, the chalk end needs to be sharpened, so that teaching is convenient, but the existing chalk knife is additionally arranged and is inconvenient to use.

SUMMERY OF THE UTILITY MODEL

The utility model provides a chalk sleeve, simple structure, convenient to use can prevent effectively that the chalk from breaking, also makes things convenient for and sharpens the chalk head.

In order to achieve the above object, the utility model provides a following technical scheme: the chalk sleeve comprises a storage inner sleeve and a sleeve which is sleeved outside the storage inner sleeve and can axially move, wherein a clamping plate is arranged at an opening at one end of the storage inner sleeve and along the edge of the opening, the sleeve moves upwards to extrude the clamping plate to deform inwards, and a chalk knife is arranged at the other end of the storage inner sleeve.

The chalk is inserted into the storage inner sleeve, one end of the chalk is exposed, and the chalk can be clamped through axial movement of the sleeve, so that the sleeve can be held by a hand to write, the chalk is broken, and the chalk sharpener can sharpen the head of the chalk at any time.

Preferably, the chalk cutter comprises an outer sleeve matched with the storage inner sleeve in shape and a blade arranged in the outer sleeve in a conical mode, the blade is sleeved on the head of the chalk, and the chalk end is sharpened by the chalk cutter through rotation of the chalk.

Preferably, the outer side wall of the clamping plate is provided with a wedge-shaped protrusion, the wedge-shaped protrusion is pressed when the sleeve moves axially, the clamping plate is deformed inwards through the sleeve, and the chalk in the clamping plate is clamped.

Preferably, the chalk knife is detachably arranged at the end part of the inner storage sleeve.

Preferably, the outer side of the lower end of the inner storage sleeve is provided with a circle of arc-shaped protrusions, the inner wall of the chalk knife is provided with a clamping groove embedded with the arc-shaped protrusions, the arc-shaped protrusions are embedded with the clamping groove, and therefore the chalk knife can be rapidly taken down and installed.

Preferably, the cross sections of the inner storage sleeve and the sleeve are regular polygons, and the regular polygon structure can prevent the sleeve from rotating and only axially moving.

Compared with the prior art, the beneficial effects of the utility model are that:

the chalk sleeve can move axially to quickly clamp the chalk through the sleeve, is simple in structure and convenient to use, can effectively prevent the chalk from being broken, and is provided with the chalk cutter, so that the chalk end can be sharpened conveniently and quickly.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a front view of the structure of the half-section of the present invention;

fig. 3 is an enlarged structural view at a of fig. 2.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-3, the utility model provides a chalk sleeve, including storing endotheca 1 and cup joint the sleeve 2 that can axially move in the storing endotheca 1 outside, the upper end opening of storing endotheca 1 and be provided with pinch-off blades 5 along the edge at the opening part, sleeve 2 rebound extrusion pinch-off blades 5 inwards deform, the other end of storing endotheca 1 be provided with chalk sword 3.

As an embodiment of the utility model, insert the chalk in storing endotheca 1, one end exposes, and axial displacement through sleeve 2 can realize the clamp of chalk tightly, just so can hand sleeve 2 and write, the chalk rupture, and chalk sword 3 can sharpen the head of chalk at any time.

The chalk sharpener 3 comprises an outer sleeve matched with the storage inner sleeve 1 in shape and a blade 4 arranged in the outer sleeve in a conical shape, the head of the chalk is sleeved with the conical blade 4, and the chalk end of the chalk sharpener 3 is sharpened by rotating the chalk.

The outer side wall of the clamping plate 5 is provided with a wedge-shaped bulge 6, the wedge-shaped bulge 6 is extruded when the sleeve 2 moves axially, the clamping plate 5 is deformed inwards through the sleeve 2, and the chalk inside is clamped.

As an embodiment, the chalk knife 3 and the inner storing sleeve 1 are detachably connected, specifically, a circle of arc-shaped protrusion 7 is arranged on the outer side of the lower end of the inner storing sleeve 1, a clamping groove 8 embedded with the arc-shaped protrusion 7 is formed in the inner wall of the chalk knife 3, the arc-shaped protrusion 7 is embedded with the clamping groove 8, and the chalk knife 3 can be rapidly taken down and installed.

The cross sections of the inner storage sleeve 1 and the sleeve 2 are regular polygons, and the regular polygon structure can prevent the sleeve 2 from rotating and only axially moving.

While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the various features of the disclosed embodiments of the present invention can be used in any combination with each other, and the description of such combinations is not exhaustive in the present specification only for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. The chalk sleeve is characterized by comprising a storage inner sleeve (1) and a sleeve (2) which is sleeved on the outer side of the storage inner sleeve (1) and can move axially, a clamping plate (5) is arranged at an opening at one end of the storage inner sleeve (1) along the edge of the opening, the sleeve (2) moves upwards to extrude the clamping plate (5) to deform inwards, and a chalk knife (3) is arranged at the other end of the storage inner sleeve (1).

2. The chalk cover according to claim 1, characterized in that: the chalk knife (3) comprises an outer sleeve matched with the storage inner sleeve (1) in shape and blades (4) which are arranged in the outer sleeve in a conical mode.

3. The chalk cover according to claim 1, characterized in that: the outer side wall of the clamping plate (5) is provided with a wedge-shaped bulge (6), and the wedge-shaped bulge (6) is extruded when the sleeve (2) moves axially.

4. The chalk cover according to claim 1, characterized in that: the chalk knife (3) is detachably arranged at the end part of the inner storage sleeve (1).

5. The chalk cover according to claim 4, characterized in that: the chalk holder is characterized in that a circle of arc-shaped protrusions (7) are arranged on the outer side of the lower end of the inner storage sleeve (1), and a clamping groove (8) embedded with the arc-shaped protrusions (7) is formed in the inner wall of the chalk holder (3).

6. The chalk sleeve according to any one of claims 1-5, characterized in that: the cross sections of the inner storage sleeve (1) and the sleeve (2) are regular polygons.