CN202896021U - Chalk shell - Google Patents

Chalk shell Download PDF

Info

Publication number
CN202896021U
CN202896021U CN 201220597691 CN201220597691U CN202896021U CN 202896021 U CN202896021 U CN 202896021U CN 201220597691 CN201220597691 CN 201220597691 CN 201220597691 U CN201220597691 U CN 201220597691U CN 202896021 U CN202896021 U CN 202896021U
Authority
CN
China
Prior art keywords
chalk
shell
slide block
casing
serrate slot
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201220597691
Other languages
Chinese (zh)
Inventor
陈柔嘉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao No2 Experimental Middle School
Original Assignee
Qingdao No2 Experimental Middle School
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qingdao No2 Experimental Middle School filed Critical Qingdao No2 Experimental Middle School
Priority to CN 201220597691 priority Critical patent/CN202896021U/en
Application granted granted Critical
Publication of CN202896021U publication Critical patent/CN202896021U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model relates to office supplies, in particular to a chalk shell. The chalk shell consists of a shell and a sliding block; the shell is provided with a tooth-shaped groove; and the sliding block is provided with convex and concave edges which are matched with the tooth-shaped groove for use. The chalk shell is simple in structure, reasonable in design and low in cost; and chalks can be effectively prevented from being broken in the using process.

Description

A kind of Chalk casing
Technical field
The utility model relates to office accommodation, particularly a kind of Chalk casing.
Background technology
At present, school or office often can use chalk, but very easy section of chalk, and some hard chalks are to add grit just to be able to hardening in chalk, but this chalk is not easy clearly to write at blackboard because having added grit.And, in using the chalk process, the chalk foam often can be stained with people on hand with clothes on, be finished chalk at every turn and all will clean, these are all given in the studying and living and make troubles.
The utility model content
For the defective that exists in the prior art, the purpose of this utility model is to provide a kind of Chalk casing that prevents that chalk from use rupturing.
For reaching above purpose, the technical scheme that the utility model is taked is:
A kind of Chalk casing is comprised of shell and slide block, on the described shell serrate slot is set, and the concavo-convex rib that is used in conjunction with serrate slot is set on the described slide block.
The beneficial effects of the utility model: simple in structure, reasonable in design, cost is low, effectively prevents chalk fracture in use.
Description of drawings
The utility model has following accompanying drawing:
The structural representation of Fig. 1 the utility model Chalk casing
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
As shown in Figure 1, a kind of Chalk casing is comprised of shell 2 and slide block 3, and serrate slot 5 is set on the described shell, and the concavo-convex rib 4 that is used in conjunction with serrate slot 5 is set on the described slide block 3.
During use, chalk 1 is inserted in the shell 2, and the concavo-convex rib 4 on the slide block 3 is the position of chalk 1 fixedly, chalk 1 is slowly released along the movement of serrate slot 5 by slide block 3.Chalk casing of the present utility model also can be put into the chalk of segment together shell 1 and use, and so just can utilize fully little chalk end.

Claims (1)

1. a Chalk casing is comprised of shell (2) and slide block (3), it is characterized in that arranging on the described shell serrate slot (5), the upper concavo-convex rib (4) that is used in conjunction with described serrate slot (5) that arranges of described slide block (3).
CN 201220597691 2012-11-07 2012-11-07 Chalk shell Expired - Fee Related CN202896021U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220597691 CN202896021U (en) 2012-11-07 2012-11-07 Chalk shell

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220597691 CN202896021U (en) 2012-11-07 2012-11-07 Chalk shell

Publications (1)

Publication Number Publication Date
CN202896021U true CN202896021U (en) 2013-04-24

Family

ID=48116729

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220597691 Expired - Fee Related CN202896021U (en) 2012-11-07 2012-11-07 Chalk shell

Country Status (1)

Country Link
CN (1) CN202896021U (en)

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130424

Termination date: 20131107