CN203818794U

CN203818794U - Sleeve for utilizing chalk ends

Info

Publication number: CN203818794U
Application number: CN201420181593.1U
Authority: CN
Inventors: 王亮宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-04-16
Filing date: 2014-04-16
Publication date: 2014-09-10
Anticipated expiration: 2024-04-16

Abstract

The utility model discloses a sleeve for utilizing chalk ends. The sleeve comprises a chalk cylinder (1) and a nib sleeve (2), wherein the nib sleeve (2) is rotationally arranged at the head part of the chalk cylinder (1); a positioning block (3) is mounted at the head part of the chalk cylinder (1); a button (4) is inserted into the tail part of the chalk cylinder (1); the head part of a clamping pipe (5) extends into the cavity of the nib sleeve (2), and the tail part of the clamping pipe (5) is connected with the button (4); one end, positioned in the chalk cylinder (1), of the clamping pipe (5) is sleeved with a spring (6) of which one end is connected with the positioning block (3), and the other end is connected with the button (4); the clamping pipe comprises a connecting pipe (5.1) and a cone-shaped pipe (5.2) connected at the head part of the connecting pipe (5.1); a plurality of elastic grooves are formed in the head part of the cone-shaped pipe (5.2). The sleeve can reuse the short and small chalk ends.

Description

Chalk end utilization cover

Technical field

The utility model relates to a kind of chalk end utilization cover.

Background technology

At present, teacher, in teaching process, uses chalk to carry out writing on the blackboard, understands and remembers so that student is explained, is convenient in the content of courses; But, after chalk-writing is too short, owing to gripping, often can only throw away, increase consuming cost, be same as environment has been caused to pollution.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of chalk end utilization cover that can again utilize short and small chalk end is provided.

The purpose of this utility model is achieved in that a kind of chalk end utilization cover,, described utilization cover includes pen container and is spun on the pen cap of pen container head, described pen container head is provided with a positioning block, described pen container afterbody is plugged with a button, above-mentioned locating piece center has a through hole, have in a grip tube grafting and above-mentioned through hole, described grip tube head is stretched in the cavity that is placed in pen cap, afterbody is connected with button, described grip tube is positioned on one end of pen container and is set with a spring, one end of this spring is connected with locating piece, and the other end is connected with button;

Above-mentioned grip tube includes tube connector and is connected in the conical pipe of tube connector head, above-mentioned tube connector is connected with button through after locating piece, the head of above-mentioned conical pipe is positioned at the cavity of pen cap, the caliber of above-mentioned conical pipe head is greater than the caliber of conical pipe and tube connector connection, and the head of conical pipe has multiple tracks degree of tightness groove.

A kind of chalk end utilization of the utility model cover, can be provided with hangnail structure on the inwall of above-mentioned conical pipe.

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

Can clamp the chalk end that is not easy to be gripped by hand by the utility model, thereby it is write to use again, reduce the consumption to chalk, the consumptive material expenditure of the school reducing; Meanwhile, reduce the quantity of discarded chalk, reduced the pollution to environment.

Brief description of the drawings

Fig. 1 is the structural representation of the utility model chalk end utilization cover.

Fig. 2 is the structural representation of the grip tube of the utility model chalk end utilization cover.

Wherein:

Pen container 1, pen cap 2, locating piece 3, button 4, grip tube 5, spring 6, chalk end 7;

Tube connector 5.1, conical pipe 5.2, degree of tightness groove 5.3.

Detailed description of the invention

Referring to Fig. 1, a kind of chalk end utilization cover that the utility model relates to, described utilization cover includes pen container 1 and is spun on the pen cap 2 of pen container 1 head, described pen container 1 head is provided with a positioning block 3, described pen container 1 afterbody is plugged with a button 4, above-mentioned locating piece 3 centers have a through hole, have in grip tube 5 grafting and above-mentioned through hole, described grip tube 5 heads are stretched in the cavity that is placed in pen cap 2, afterbody is connected with button 4, described grip tube 5 is positioned on one end of pen container 1 and is set with a spring 6, one end of this spring 6 is connected with locating piece 3, the other end is connected with button 4,

Referring to Fig. 2, above-mentioned grip tube 5 includes tube connector 5.1 and is connected in the conical pipe 5.2 of tube connector 5.1 heads, above-mentioned tube connector 5.1 is connected with button 4 through locating piece 3 is rear, the head of above-mentioned conical pipe 5.2 is positioned at the cavity of pen cap 2, the caliber of above-mentioned conical pipe 5.2 heads is greater than the caliber (up big and down small structure) of conical pipe 5.2 and tube connector 5.1 connections, and the head of conical pipe 5.2 has multiple tracks degree of tightness groove 5.3, one end of chalk end 7 is placed in the head conical pipe 5.2 of grip tube 5, and the other end is stretched and is placed in outside it through pen cap 2;

Use principle of the present utility model is:

First, press the button 4, the elastic force that grip tube 5 overcomes spring 6 ejects conical pipe 5.2 forward;

Then, chalk end 7 is packed in conical pipe 5.2 into release button 4, grip tube 5 moves under the effect of elastic force in the through hole of locating piece 3, now conical pipe 5.2, due to the existence of degree of tightness groove 5.3, tightens up in the process moving, thereby chalk end 7 is clamped firmly in the through hole of phase locating piece 3; Meanwhile, in order to increase clamping effect, on the inwall of above-mentioned conical pipe 5.2, can be provided with hangnail structure, thereby further increase clamping effect, prevent that chalk end is deviate from the time writing.

Claims

1. a chalk end utilization cover, it is characterized in that: described utilization cover includes pen container (1) and is spun on the pen cap (2) of pen container (1) head, described pen container (1) head is provided with a positioning block (3), described pen container (1) afterbody is plugged with a button (4), above-mentioned locating piece (3) center has a through hole, have in a grip tube (5) grafting and above-mentioned through hole, described grip tube (5) head is stretched in the cavity that is placed in pen cap (2), afterbody is connected with button (4), described grip tube (5) is positioned on one end of pen container (1) and is set with a spring (6), one end of this spring (6) is connected with locating piece (3), the other end is connected with button (4),

Above-mentioned grip tube (5) includes tube connector (5.1) and is connected in the conical pipe (5.2) of tube connector (5.1) head, above-mentioned tube connector (5.1) is connected with button (4) through after locating piece (3), the head of above-mentioned conical pipe (5.2) is positioned at the cavity of pen cap (2), the caliber of above-mentioned conical pipe (5.2) head is greater than the caliber of conical pipe (5.2) and tube connector (5.1) connection, and the head of conical pipe (5.2) has multiple tracks degree of tightness groove (5.3).

2. a kind of chalk end utilization cover as claimed in claim 1, is characterized in that: on the inwall of above-mentioned conical pipe (5.2), can be provided with hangnail structure.