CN2449927Y

CN2449927Y - Propelling chalk

Info

Publication number: CN2449927Y
Application number: CN 00249657
Authority: CN
Inventors: 丁鹤峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-10-17
Filing date: 2000-10-17
Publication date: 2001-09-26
Anticipated expiration: 2010-10-17

Abstract

The utility model discloses a piece of movable chalk. The utility model comprises a chalk clamp and a chalk rod, wherein the chalk rod is provided with a long groove. Both sides of the long groove are respectively provided with rectangles, and the concave parts and the convex parts of the rectangles are interphase. A sliding rod and a piece of chalk are arranged in the chalk rod. A concave rectangle and a positioning hole are formed on the sliding rod, and a spring slice is arranged in the sliding rod. One end of the spring slice can be embedded in the concave rectangles on the sliding rod and the long groove. A pushing button is covered on the chalk rod. A convex end and a rib which are inserted in the positioning hole are arranged on the pushing button. The utility model has the advantages that fingers can not be stained, the length of the chalk can be effectively adjusted, the utilization rate of the chalk is enhanced, the waste is avoided, and the resource is saved.

Description

A kind of Propelling chalk

The utility model relates to a kind of writing implement, especially relate to a kind of with blackboard as the Propelling chalk of writing object.

For a long time, the application of chalk in daily life and work is very widely.It in use has pollution to point, fractures, causes waste easily, carries inconvenient drawback.

But the purpose of this utility model provides a kind of Propelling chalk that remedies collapsing length traditional ways of writing defective, that be convenient to write the regulated at will chalk.

The purpose of this utility model is achieved in that a kind of Propelling chalk, it comprises pen clip, penholder, have an elongated slot on the external diameter bus of penholder, the both sides of elongated slot have more than at least one perpendicular to the direction of elongated slot, symmetry, concavo-convex alternate rectangle, penholder is built-in with can be simultaneously and the slide bar and the chalk of the relative slip of internal diameter of penholder, the fastening chalk that accompanies of one end of slide bar, have one on the cylinder of slide bar corresponding to the recessed rectangle on the elongated slot, one side of the recessed rectangle on the slide bar has a locating hole, slide bar is built-in with spring leaf, one end of spring leaf can embed the recessed rectangle on slide bar and the elongated slot, and roughly flush with the external diameter of penholder, be covered with push button on the external diameter bus of penholder, the one side that push button contacts with the penholder external diameter has the insertion locating hole, and the nose that can in elongated slot, slide, there is a pressuring spring sheet to be contracted to rib in the penholder internal diameter between the nose.

The task that the utility model proposed also can further be realized by following technical solution: the both sides of the recessed rectangle on the slide bar have a locating hole, and nose can correspondingly insert in the locating hole; Spring leaf is yi word pattern or V-shape; Concavo-convex alternate rectangle on the elongated slot is equidistant, at interval about 1.5mm.

The utility model is owing to adopt technique scheme, except that the writing function with chalk, also has easy to use, fluent writing, do not stain the advantage of finger.Especially when chalk is about to use up, can regulate the length of chalk effectively, chalk be made the best use of everything, thereby improved the utilization rate of chalk, avoid waste, save resource.

Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described in further detail:

Fig. 1 is the utility model structural representation.

Fig. 2 is the A-A cutaway view of Fig. 1.

With reference to Fig. 1, Fig. 2.The utility model comprises pen clip 1, penholder 2, have an elongated slot 3 on the external diameter bus of penholder 2, the both sides of elongated slot 3 have more than at least one perpendicular to the direction of elongated slot 3, symmetry, concavo-convex alternate rectangle 4, penholder 2 is built-in with can be simultaneously and the slide bar 5 and the chalk 6 of the relative slip of internal diameter of penholder 2, the fastening chalk 6 that accompanies of one end of slide bar 5, have one on the cylinder of slide bar 5 corresponding to the recessed rectangle 4 on the elongated slot 3, one side of the recessed rectangle 4 on the slide bar 5 has a locating hole 7, slide bar 5 is built-in with spring leaf 8, one end of spring leaf 8 can embed the recessed rectangle 4 on slide bar 5 and the elongated slot 3, and roughly flush with the external diameter of penholder 2, be covered with push button 9 on the external diameter bus of penholder 2, the one side that push button 9 contacts with penholder 2 external diameters has insertion locating hole 7, and the nose 10 that can in elongated slot 3, slide, there is a pressuring spring sheet 8 to be contracted to rib 11 in penholder 2 internal diameters between the nose 10.

Embodiment 1: with reference to accompanying drawing.Depress push button of the present utility model, making spring leaf produce crooked deformation contracts to the penholder internal diameter under the rib compressing of push button, promote push button and drive slide bar to that end (nib) away from penholder, chalk is inserted in the slide bar, depress and spur or promote push button the adaptation writer that chalk is adjusted to the best is write length place (chalk exposes about the about 10mm of nib), unclamp push button then the recessed rectangle on the spring leaf embedding elongated slot can be write.Along with the chalk loss, progressively promote push button, make chalk remain the best length of writing, use up until chalk and change another chalk.

Embodiment 2: with reference to accompanying drawing.For making spring leaf and push button have better locating effect, spring leaf can be made V-shape, the nose on the slide bar on locating hole and the push button can correspondence be made two pairs, and its concrete implementation step is with embodiment 1.

Claims

1. Propelling chalk, it comprises pen clip, penholder, it is characterized in that: have an elongated slot on the external diameter bus of penholder, the both sides of elongated slot have more than at least one perpendicular to the direction of elongated slot, symmetry, concavo-convex alternate rectangle, penholder is built-in with can be simultaneously and the slide bar and the chalk of the relative slip of internal diameter of penholder, the fastening chalk that accompanies of one end of slide bar, have one on the cylinder of slide bar corresponding to the recessed rectangle on the elongated slot, one side of the recessed rectangle on the slide bar has a locating hole, slide bar is built-in with spring leaf, one end of spring leaf can embed the recessed rectangle on slide bar and the elongated slot, and roughly flush with the external diameter of penholder, be covered with push button on the external diameter bus of penholder, the one side that push button contacts with the penholder external diameter has the insertion locating hole, and the nose that can in elongated slot, slide, there is a pressuring spring sheet to be contracted to rib in the penholder internal diameter between the nose.

2. a kind of Propelling chalk according to claim 1 is characterized in that: the both sides of the recessed rectangle on the slide bar have a locating hole, and nose can correspondingly insert in the locating hole.

3. a kind of Propelling chalk according to claim 1 and 2 is characterized in that: spring leaf is yi word pattern or V-shape.

4. a kind of Propelling chalk according to claim 3 is characterized in that: the concavo-convex alternate rectangle on the elongated slot is equidistant, at interval about 1.5mm.