CN2460311Y - Chalk cover - Google Patents

Abstract

The utility model relates to a novel chalk cover. The utility model belongs to the technical field of the subgroup of holders of crayons or chalk of the group of holders of pencils or chalk; pencil connectors; protection devices for tip ends of pencil cores of the subclass of apparatuses for writing or drawing of the class of apparatuses for writing or drawing; office articles under the subsection of printing in the section of performing operations and transporting according to the International Patent Classification (IPC). The class number of the utility model is B43K23/016. The utility model is composed of a pushing rod, a chalk cover, a spring, a blocking board, a thin rod, a piece of chalk and a plastic clip. The utility model is characterized in that the pushing rod is arranged at the tail part of the chalk cover. The novel chalk cover of the utility model has high practicability.

Description

A kind of novel chalk casing

The utility model relates to a kind of novel chalk casing.Belong to operation Department of Transportation by International Patent Classification (IPC) (IPC) division, printing branch is write or drawing appliance; The big class of office appliance is write or the drawing appliance group clamper of pencil or chalk; The pencil connector; Big group of the protector of reservoir tip, wax crayon or the little technical group field of chalk clamper.Classification number is B43K23/016.

At present, the technology about wax crayon or chalk clamper existing and that once had was all done very fruitful effort to the demand of novel chalk casing, also once designed many outstanding technical schemes.As being declared by Sun Chunlei of the Decree of Patent Office of China in 1996, Granted publication number is CN2239354Y, and China Patent No. (ZL) is: No. 95216974.6 utility model title is the utility model patent of " multi-functional pencil cover ", the technical scheme that is adopted.At wax crayon or chalk clamper technical elements is a routine of great value invention, and it has solved the multi-functional problem of point protector effectively.But still have some deficits, it also is difficult to solve the long-term problem of using chalk injury hand skin.

The purpose of this utility model is to provide a kind of novel chalk casing.To solve the problem of long-term use chalk injury hand skin.

The purpose of this utility model is achieved in that a kind of novel chalk casing of this utility model.Mainly constitute by push rod, the pen cap, spring, baffle plate, thin bar, chalk, plastic clip.Its spring, chalk are by selecting for use on the market.Its push rod, thin bar are cylindrical shapes, use plastic material, through the thermoforming processing and manufacturing.Its pen cap is a hexagonal prism shape, uses plastic material, through the Mould Machining manufacturing.Its baffle plate is round-shaped, uses plastic material, through the thermoforming processing and manufacturing.Push rod adopts the insertion method to be installed in the tail position of the pen cap, constitutes cylindrical shape and promotes structure, and function has been to promote the chalk effect.Spring adopts assembling method to be installed in the head position of push rod, constitutes spiral-shaped answer structure, and function has been that the restoring force effect is provided.Thin bar adopts adhering method to be installed in the front position of push rod, constitutes the cylindrical shape force transferring structure, and function has been the effect of transmission power.Baffle plate adopts adhering method to be installed in the medium position of the pen cap, constitutes the toroidal baffle arrangement, and function has been a fixation.Plastic clip adopts adhering method to be installed in the head position of the pen cap, constitutes the round tube shape hollow structure, and function has been to clamp the chalk effect.So just realized the purpose of this utility model.

The utility model has been compared two advantages and improvement with the technology of original wax crayon or chalk clamper;

The first, because the utility model has designed the pen cap in technical scheme, hinder hand so can prevent chalk;

The second, because the utility model has designed push rod in technical scheme, so can release chalk forward.Thereby just can more effectively solve the problem of long-term use chalk injury hand skin.

Accompanying drawing provides structural representation of the present utility model:

Fig. 1 is the main TV structure schematic diagram of a kind of novel chalk casing of the utility model;

Fig. 2 is the plan structure schematic diagram of a kind of novel chalk casing of the utility model;

The numbering of parts explanation in the schematic diagram: 1 push rod, 2 pens cap, 3 springs, 4 baffle plates, 5 thin bar 6 chalks 7 plastic clip

In the optimum implementation of a kind of novel chalk casing of the utility model, its technical scheme is achieved in that and below in conjunction with accompanying drawing the utility model is described further:

Its static structure: as shown in the figure, a kind of novel chalk casing of the utility model.Mainly constitute by push rod 1, the pen cap 2, spring 3, baffle plate 4, thin bar 5, chalk 6, plastic clip 7.Push rod 1 adopts the insertion method to be installed in the tail position of the pen cap 2, constitutes cylindrical shape and promotes structure, and function has been to promote the chalk effect.Spring 3 adopts assembling method to be installed in the head position of push rod 1, constitutes spiral-shaped answer structure, and function has been that the restoring force effect is provided.Thin bar 5 adopts adhering method to be installed in the front position of push rod 1, constitutes the cylindrical shape force transferring structure, and function has been the effect of transmission power.Baffle plate 4 adopts adhering method to be installed in the medium position of the pen cap 2, constitutes the toroidal baffle arrangement, and function has been a fixation.Plastic clip 7 adopts adhering method to be installed in the head position of the pen cap 2, constitutes the round tube shape hollow structure, and function has been to clamp the chalk effect.

Its dynamic structure: in force:

According to the power transmission principle, its push rod 1 acts on chalk 6 by thin bar 5, thereby finishes the task of promoting chalk.According to elastic principle, its baffle plate 4 acts on push rod 1 by spring 3, thereby finishes the task of replying the position.So just realized the purpose of this utility model.Thereby just can solve the problem of long-term use chalk injury hand skin.

Below by using method, the utility model is done more detailed description:

A kind of novel chalk casing of this utility model is work like this:

In use, when need use chalk, press...with one's finger and move push rod 1, push rod 1 travels forward, and acts on chalk 6 by thin bar 5, make it from the pen cap 2, stretch out appropriate length, can use, after finger unclamps, under the restoring force effect of spring 3, to original position, chalk 6 is shelved by plastic clip and is guaranteed to swivel motion for push rod 1.

Realize that preferred plan of the present utility model is is material with plastics, utilize the basic equipment of stationery factory, take thermoforming to produce in batch, the demand with supply student circle so just can realize practical value of the present utility model and economic worth better.

Claims (5)

1. novel chalk casing, it is to be made of push rod (1), the pen cap (2), spring (3), baffle plate (4), thin bar (5), chalk (6), plastic clip (7), it is characterized in that push rod (1) is installed in the tail position of the pen cap (2).。

2. a kind of novel chalk casing according to claim 1 is characterized in that spring (3) is installed in the head position of push rod (1).

3. a kind of novel chalk casing according to claim 1 is characterized in that thin bar (5) is installed in the front position of push rod (1).

4. a kind of novel chalk casing according to claim 1 is characterized in that baffle plate (4) is installed in the medium position of the pen cap (2).

5. a kind of novel chalk casing according to claim 1 is characterized in that plastic clip (7) is installed in the head position of the pen cap (2).

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