KR20080102918A - Shape pencil - Google Patents

Abstract

A mechanical pencil is provided to prevent the mechanical lead from being broken and bringing difficulty in taking notes by freely adjusting the length of the mechanical lead. A mechanical pencil comprises: a tip cap(10) in which a jaw(11) is formed; a case(20) in which the protrusion(21) is formed; a mechanical lead control device(30) in which the inner side is formed in a hexagon; a slider(40) formed of a sleeve(42) with a stop function; a chuck(60) transferring a mechanical lead; and a spring(70) providing restoring force.

Description

Sharp pencil

1 is an exploded perspective view showing a mechanical pencil of the present invention,

Figure 2a, 2b, 2c, 2d is a cross-sectional view showing the operating state of the mechanical pencil of the present invention,

3a and 3b is a cross-sectional view showing another embodiment of the mechanical pencil of the present invention,

Figure 4 is a cross-sectional view showing a conventional mechanical pencil.

<Explanation of symbols for the main parts of the drawings>

10: Tip cap 11: Hanging jaw

12: screw part

20: case 21: protrusion

30: shim adjustment device 31: groove

40: slider 41: screw portion

42: sleeve 50: core pain

60: Chuck 70: Spring

80: pressure port

The present invention relates to a sharp pencil, and more particularly to press the pressure port by forming a shim adjusting device on the upper case of the sharp shim

The sharp shim breaks when writing so that it does not interfere with writing.

It relates to the sharp pencil which prevented it.

In general, the pencil is inserted into the inner tube with a long pencil nib every time the pressing hole formed on the top of the outer casing is pressed

As the inner tube supported by a pring is lifted and resilient, a pencil lead is formed in the lower part of the casing which has passed through the clamping portion at the bottom of the inner tube.

It is pushed out slightly through the cap.

Therefore, as the pencil lead is worn out, simply press the pressure port so that the pencil lead is pushed out slightly through the cap at the bottom of the casing.

It is very convenient to use and when the used pencil core is completely worn out, the new pencil core stored in the inner tube

It is to be pushed out little by little through the cap, and the inner tube always has several pencils

It is very convenient.

By the way, in the conventional mechanical pencil, as shown in FIG. 4, the length of the sharp core coming out through the tip cap 1 is from the manufacturing stage.

Since the mechanical pencil is set shorter, the pressure pencil (2) must be pressed twice or more, so the operation is cumbersome, and the long setting

Since the mechanical pencil is too long in length, the problem of breaking the core during writing occurs.

So, in general, when adjusting the length of the shim, press the presser (2) two times or more to let the shim come out, and then press the presser once again.

It has been adjusted by pushing or pulling the sharp shim as a hand other than the hand holding the sharp pencil while pressing.

Adjust the length of the seam as described above when you are troublesome and urgent to write

If you look at the contents to be written is a problem that can not be written.

Sharp pencil of the present invention is made in view of the above problems, by forming a shim adjusting device on the upper case of the sharp shim

The length of the sharp shim that comes out when pressing the pressure port can be adjusted freely.

The purpose is to provide a sharp pencil that prevents intestines.

The present invention for achieving the above object is a sharp shim is sent out and the sharp shim while advancing when pressurizing the pressure port therein

Stopper that acts as a stopper to stop the chuck and sleeve to send the product to the outside after moving a certain distance is formed

A front end cap, a case which is fastened to the front end cap, and has a protrusion formed at an upper end thereof, and a protrusion formed at the case.

The groove is formed to correspond to and the outer shape is formed in a cylindrical shape, and the innermost sharp core adjusting device formed in a hexagonal shape,

It is fastened to the inside of the sharp shim adjusting device is formed in a hexagonal shape so that one side corresponds to the inner shape of the sharp shim adjusting device,

On the other end, if the threaded portion is formed to be fastened to the threaded portion formed inside the tip cap, the end of the sharp core

A slider having a sleeve having a sleeve which stops when the feeding chuck retracts after sending the sharp shim, and the slider

A core tube is formed to keep the sharp core inside, and the chuck to send the sharp core to the outside receives pressure and returns to its original position.

Sharp pencil characterized in that the spring is provided to provide a restoring force to return, and the line to which the sharp seam is sent

Sharp core adjuster and slider are integrally formed inside the case that is fastened to one side of the short cap,

Rotating the case allows the slider to move forward and backward along the threaded portion of the inside of the case so that the length of the sharp seam can be adjusted.

will be.

Hereinafter will be described with reference to the accompanying drawings, the mechanical pencil of the present invention.

Figure 1 is an exploded perspective view showing a sharp pencil of the present invention, the case 20 is fastened to one side of the tip cap 10 to which the sharp core is sent out

The inside of the chuck 60 and the sled to send the sharp core to the outside of the tip gap 10 while advancing when the pressure port 80 is pressurized

The locking jaw 11 serving as a stopper is formed to stop the rib 42 after moving by a predetermined distance.

A protrusion 21 is formed at an upper end of the case 20 which is fastened to the tip cap 10, and a groove (

31 is formed, the sharp shim adjusting device 30 is fastened.

The sharp shape of the sharp adjustment device 30 is formed in a cylindrical shape, the inner side is formed in a hexagonal shape.

Inside the sharp shim adjusting device 30 is formed in a hexagonal shape so that one side corresponds to the inner shape of the sharp shim adjusting device 30,

, Another side is sharp at the end when the threaded portion 41 is formed to be fastened to the threaded portion 12 formed on the inner side of the tip cap 10

The sleeve 42 which stops when the chuck 60 and the sleeve 42 for discharging the shim are retracted after discharging the sharp shim

Slider 40 is formed is fastened.

Inside the slider 40, a core barrel 50 is formed to store the sharp core, and the chuck 60 for sending the sharp core to the outside.

The spring 70 is provided to provide a restoring force to return to its original position after being subjected to overpressure.

2A, 2B, 2C, and 2D are cross-sectional views showing the operating state of the sharp pencil of the present invention, and are formed on the upper portion of the case 20.

Rotating the adjusting device 30 moves forward the slider 40 formed on the inside while rotating.

When the slider 40 moves forward, the chuck 60 and the sleeve 42 meshed with the inner side of the core barrel 50 move forward at the same time.

Accordingly, the distance L2 of the latching jaw 11 formed on the chuck 50 and the sleeve 42 and the tip cap 10 is at the initial distance L1.

It is shortened.

In the above, the distance between the chuck 60 and the sleeve 42 and the locking jaw 11 becomes the length of the sharp shim discharged to the outside of the tip cap 10.

All.

When pressing the pressure port 80 in the above, the chuck 60 and the sleeve 42 is advanced, the sharp shim that was bitten by the chuck 60

It is discharged to the outside of the tip cap (10).

The sleeve 42 of the chuck 60 and the sleeve 42 advanced in the above cannot be moved further by the locking jaw 11 formed in the tip cap 10.

On the other hand, the chuck 60 is moved forward more than the sleeve 42, pressurized by the sleeve 42 to pressurize the sharp seam

As the chuck 60 was removed from the pressure no longer pressurizes the sharp shim, accordingly the sharp shim is no longer the tip cap (10)

It will not be discharged to the outside.

When the pressure applied to the pressure port 80 is removed, the chuck 60 and the sleeve 42 retreat back to the spring 70.

When the sharp shim adjusting device 30 is turned in the opposite direction, the chuck 60 and the sleeve 42 and the engaging jaw 11 formed on the tip cap 10 are formed.

The longer the distance is, the longer the length of the sharp seam is sent out.

Figure 3a and 3b is a cross-sectional view showing another embodiment of the sharp pencil of the present invention, fastened to one side of the tip cap 10 is the sharp core is sent out

Sharp core adjustment device 30 and the slider 40 is formed integrally inside the case 20 to be screwed with the case 20

When the case is rotated as an image, the slider 40 moves forward and backward along the threaded portion 22 inside the case 20 so that the sharp core path

This can be adjusted.

Sharp pencil of the present invention as described above is to come out when pressing the pressure port to form a shim adjustment device on the upper case of the sharp shim

The length of the sharp shim can be adjusted freely, which prevents the sharp shim from breaking during writing.

It is the invention which used.

Claims (2)

The sharp shim is sent out and the chuck 60 and the sleeve (4) for sending the sharp shim to the outside while advancing when the pressure inlet 80 is pressurized therein 2) the tip cap 10 is formed with a stopper jaw (11) serving as a stopper to stop after moving by a predetermined distance, A case 20 fastened to the tip cap 10 and having a protrusion 21 formed at an upper end thereof; The groove 31 is formed so as to correspond to the protrusion 21 formed in the case 20, the sharp core adjusting device formed in a hexagonal shape on the inside ( 30) and, It is fastened to the inside of the sharp shim adjusting device 30 and is formed in a hexagonal shape so that one side corresponds to the inner shape of the sharp shim adjusting device 30. Another side is formed with a screw portion 41 to be fastened to the threaded portion 12 formed on the inside of the tip cap 10 and the end portion The sleeve 42 is formed to stop when the chuck 60 for sending the sharp shim to the outside is retracted after sending the sharp shim is formed Slider 40, A core barrel 50 is formed to keep the sharp core inside the slider 40, and the chuck 60 for sending the sharp core to the outside. And a spring 70 which provides a restoring force so that the sleeve 42 can be returned to its original position after being pressurized. Sharp pencil to make. According to claim 1, Sharp shim adjusting device 30 and the sling on the inside of the case 20 is fastened to one side of the front end cap 10 is sent out sharp When the rider 40 is integrally formed and screwed with the case 20 to rotate the case, the screw part 22 inside the case 20 is rotated. Along with the slider 40, the sharp pencil, characterized in that to adjust the length of the sharp core by reversing.

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