CN206201749U

CN206201749U - A kind of chalk sleeve

Info

Publication number: CN206201749U
Application number: CN201620662742.5U
Authority: CN
Inventors: 王莉莉
Original assignee: Shantou University
Current assignee: Shantou University
Priority date: 2016-06-29
Filing date: 2016-06-29
Publication date: 2017-05-31
Anticipated expiration: 2026-06-29

Abstract

The utility model is related to a kind of chalk sleeve, including chalk, pen cap shell and pen cap inner core, and the chalk and the pen cap inner core are the cylinder that bottom surface is rounded triangle, and the bottom surface of the chalk and the pen cap inner core is in the same size；The pen cap shell is provided with the triangular prism cavity that can accommodate the chalk and the pen cap inner core；Multiple fixed card slots are uniformly provided with the inwall of the pen cap shell, the upper end of outer core is provided with compressor bar in the pen cap, the compressor bar is provided with the grab being adapted with the fixed card slot, and the pen cap inner core is provided with the groove for accommodating the compressor bar；The baffle plate that perforate is rounded triangle is provided with two bottom surfaces of the pen cap shell；The size of the rounded triangle on the baffle plate is consistent with the bottom surface of the chalk.The utility model is simple to operate, easy to use, it is easy to receive, and does not roll, and does not waste, and makes the non-sticky chalk dust of writing process hand, and protection user is healthy.

Description

A kind of chalk sleeve

Technical field

The utility model is related to realia field, more particularly to a kind of chalk sleeve.

Background technology

It is well known that chalk is most important writing implement in current school instruction.China's most area is not adopted also With dust-free chalk and dust-free blackboard.When using chalk, chalk is put in chalk holder, and chalk holder is placed from blackboard farther out sometimes Position, chalk of taking is wasted time and energy.When chalk is write on blackboard, chalk of somewhat putting forth one's strength just fractures, or cylinder Chalk easily roll down to underground and break into pieces, be left shorter chalk end, when using shorter chalk end, it is impossible to which firm holds Chalk end, therefore cannot continue to write, these shorter chalk ends can only be thrown away, not only chalk utilization rate is relatively low, Er Qiezao Into serious waste.Chalk is made by lime, and chalk is all directly held with hand write when in use, if when long The holding chalk of phase writes, both hands of easily making dirty, influences health.

The content of the invention

The purpose of this utility model is that existing chalk utilization rate is low, easily make dirty both hands and shadow to solve for offer one kind The problems such as ringing health.

In order to realize above-mentioned purpose, adopt the following technical scheme that：

A kind of chalk sleeve, including chalk, pen cap shell and pen cap inner core, the chalk and the pen cap inner core are bottom surface It is the cylinder of rounded triangle, the bottom surface of the chalk and the pen cap inner core is in the same size；The pen cap shell is provided with can Accommodate the triangular prism cavity of the chalk and the pen cap inner core；Multiple fixing cards are uniformly provided with the inwall of the pen cap shell Groove, the upper end of outer core is provided with compressor bar in the pen cap, and the compressor bar is provided with the card being adapted with the fixed card slot Hook, the pen cap inner core is provided with the groove for accommodating the compressor bar；It is provided with out on two bottom surfaces of the pen cap shell Hole is the baffle plate of rounded triangle；The size of the rounded triangle on the baffle plate is consistent with the bottom surface of the chalk.

Further, the pen cap inner core is more long than the pen cap shell.

Further, it is provided with magnet on the outer wall of the pen cap shell.

Further, the fixed card slot is triangle, and the grab is upside-down triangle shape.

Further, fixed card slot, the pen cap inner core are all uniformly provided with three inwalls of rib of the pen cap shell The upper end of outer wall is corresponding to be provided with three compressor bars and three grooves for accommodating the compressor bar.

Further, the baffle plate is rubber.

Compared with prior art, the utility model is simple to operate, easy to use, it is easy to receive, and does not roll, and does not waste, and makes The non-sticky chalk dust of writing process hand, protection user is healthy.

Brief description of the drawings

Fig. 1 is the utility model chalk sleeve structural representation；

Fig. 2 is the utility model pen cap shell mechanism schematic diagram；

Fig. 3 is the utility model pen cap core arrangement schematic diagram；

Fig. 4 is the utility model chalk structural representation.

Specific embodiment

It is new to this practicality below in conjunction with accompanying drawing to make the purpose of this utility model, technical scheme and advantage clearer Type is described in further detail.

Embodiment

A kind of chalk sleeve, as Figure 1-Figure 4, including chalk 3, pen cap shell 1 and pen cap inner core 7.In chalk 3 and the pen cap Core 7 is the cylinder that bottom surface is rounded triangle, and the bottom surface of chalk 3 and pen cap inner core 7 is in the same size.Pen cap shell 7 is Triangular prism shape, can prevent chalk sleeve from being rolled on desk, and being provided with pen cap shell 1 can accommodate chalk 3 and pen cap inner core 7 Triangular prism cavity.Pen cap inner core 7 is more long than pen cap shell 1, convenient use.Multiple fixations are uniformly provided with the inwall of pen cap shell 1 Draw-in groove 2, the upper end of the outer wall of pen cap inner core 7 is provided with compressor bar 71, and compressor bar 71 is provided with the grab being adapted with fixed card slot 2 72.Pen cap inner core 7 is provided with the groove 73 for accommodating compressor bar 71.It is circle that perforate is provided with two bottom surfaces of pen cap shell 1 The baffle plate 5 of angle triangle；The size of the rounded triangle on baffle plate is consistent with the bottom surface of chalk.Set on the outer wall of pen cap shell 1 It is equipped with magnet 6.

Fixed card slot 2 is triangle in the present embodiment, and grab 72 is upside-down triangle shape.Three ribs of pen cap shell 1 Fixed card slot 2 is all uniformly provided with inwall, the upper end of the outer wall of pen cap inner core 7 is corresponding to be provided with three compressor bars 71 and three receivings The groove 73 of compressor bar 71.

Baffle plate 5 can be rubber.Rubber baffle makes front end produce bigger friction, prevents chalk from skidding off.

The chalk sleeve of the present embodiment is when in use, first fully-inserted to pen cap shell from the end of pen cap shell 1 by chalk 3 It is interior, then the head end of pen cap inner core 7 is inserted into the end of pen cap shell, one small section is promoted forward, until grab 72 and fixing card Groove 2 is combined, and is gradually shortened when with chalk, then can promote pen cap inner core 7 once, and chalk advances one section, and the action can be singlehanded Operation, settles at one go, convenient and swift, time saving and energy saving, when that need not use, by the magnetic force of magnet, can easily be inhaled On blackboard, conveniently take, when the pen cap is placed on desk, do not roll, it is to avoid chalk falls on the ground to be broken into pieces.

Above disclosed is only a kind of preferred embodiment of the utility model, can not limit this practicality with this certainly New interest field, therefore the equivalent variations made according to the utility model claim, still belong to what the utility model was covered Scope.

Claims

1. a kind of chalk sleeve, it is characterised in that including chalk, pen cap shell and pen cap inner core, in the chalk and the pen cap Core is the cylinder that bottom surface is rounded triangle, and the bottom surface of the chalk and the pen cap inner core is in the same size；Outside the pen cap Shell is provided with the triangular prism cavity that can accommodate the chalk and the pen cap inner core；It is uniformly provided with the inwall of the pen cap shell Multiple fixed card slots, the upper end of outer core is provided with compressor bar in the pen cap, and the compressor bar is provided with and the fixed card slot Adaptable grab, the pen cap inner core is provided with the groove for accommodating the compressor bar；On two bottom surfaces of the pen cap shell It is provided with the baffle plate that perforate is rounded triangle；The bottom surface one of the size of the rounded triangle on the baffle plate and the chalk Cause.

2. chalk sleeve according to claim 1, it is characterised in that the pen cap inner core is more long than the pen cap shell.

3. chalk sleeve according to claim 1, it is characterised in that be provided with magnet on the outer wall of the pen cap shell.

4. chalk sleeve according to claim 1, it is characterised in that the fixed card slot is triangle, the grab is to fall Triangle.

5. chalk sleeve according to claim 1, it is characterised in that all uniformly set on three inwalls of rib of the pen cap shell There is fixed card slot, the upper end of outer core is provided with three compressor bars accordingly and three accommodate the recessed of the compressor bar in the pen cap Groove.

6. chalk sleeve according to claim 1, it is characterised in that the baffle plate is rubber.