KR20040003453A - Writing instrument with adjustable handle thickness - Google Patents

Abstract

PURPOSE: A mechanical pencil with adjustable finger grip is provided to allow a user to adjust the thickness of the finger grip in the pencil to be suitable for the user's habit and hand size. CONSTITUTION: The mechanical pencil with adjustable finger grip includes a supporting hole(11); screw parts for first-direction(23a,23b) on the upper side of the supporting hole(11) to move by turning the finger grip; screw parts for second-direction(24a,24b) on the lower side of the supporting hole(11) to move by turning the finger grip in the opposite direction; and elastic materials(21,22) joined to the screw parts for first-direction(23a,23b) and the screw parts for second-direction(24a,24b) to change the thickness of the finger grip by the movement of the screw parts for first-direction(23a,23b) and the screw parts for second-direction(24a,24b).

Description

Writing instrument with adjustable handle thickness

The present invention relates to a writing instrument that can adjust the thickness of the handle portion, and in particular, by using the elastic material and a pair of screws to rotate the handle portion (grip) to the handle portion of the writing instrument to match the user's taste To control the thickness of the knob to adjust the writing instruments.

General writing instruments are manufactured uniformly with a suitable thickness to include the inner core. That is, the thickness is determined according to the type of writing instrument. For example, the highlighter is relatively thicker in proportion to the thickness of the shim, and the ballpoint pen is thinner than the highlighter. In addition, writing instruments of various thicknesses have been released in consideration of design and ease of use.

Some products come with rubber or a separate non-slip material on the handle part that directly touches the user's hand. The handle covered with this separate material is called a grip.

An embodiment of a writing instrument configured to deform the shape of the handle portion will be described with reference to FIG. 1.

1A is a view showing the inside of such a writing instrument.

The body 1 of FIG. 1A is provided with a turning rod 2 on the upper side, and the deformable material 3 supported by the supporting rod 5 is formed in a triangular shape inside the handle portion. The outer side of the deformable material (3) is provided with an elastic member (4) to make the shape of the handle deformable by the deformable material (3).

FIG. 1B is a view for explaining a handle shape deformation state of FIG. 1A writing mechanism. FIG.

In FIG. 1B, when the user turns the turning bar 2 of the body 1 as shown in the figure, the triangular shape deformation member 3 is spread outward. Then, the shape of the handle portion is deformed from a circle to a triangle.

FIG. 1C is a cross-sectional view taken along the line A-A 'of FIG. 1B, and when the deformable material 3 is spread outward, it has a triangular cross section.

Therefore, the user may use the handle of the writing instrument in a circular shape so as to suit his or her taste and make a triangular surface.

However, these conventional writing instruments are uniformly released in the thickness of the handle was not available in accordance with the user's hand size or taste, and the writing instrument shown in Figure 1 handle portion, although the shape of the handle portion is deformed from a circle to a triangle Could not control the thickness of.

Accordingly, it is an object of the present invention to provide a writing device that can adjust the thickness of the handle to adjust the thickness of the handle portion of the writing instrument thick or thin so as to meet the user's hand size or taste so as to solve the above problems.

1A is a view showing the inside of a writing instrument according to a conventional embodiment;

Figure 1b is a view for explaining the handle shape deformation state of Figure 1a writing instruments,

1C is a cross-sectional view along the line A-A 'of FIG. 1B;

Figure 2a is an external view of the writing instrument adjustable thickness knob according to an embodiment of the present invention,

Figure 2b is a view showing the interior of the writing instrument of Figure 2a,

Figure 2c is a view for explaining the handle thickness adjustment state of Figure 2b writing mechanism,

3A is an exploded perspective view of FIG. 2B;

3B is an exploded perspective view of FIG. 2C;

4A is a cross-sectional view taken along line C-C 'in FIG. 2B;

4B is a sectional view taken along the line D-D 'in FIG. 2C;

* Explanation of symbols for main parts of the drawings

10: body 20: handle portion

30 core 11: support rod

21: first elastic material 22: second elastic material

23a, 23b: left hand thread

24a, 24b: Right hand thread

The handle thickness adjustable writing instruments according to the present invention for achieving the above object is located on the support rod formed in the writing instrument, the upper side of the support rod, and the first direction screw portion to move as the handle portion is rotated, is located on the lower side of the support rod A second direction screw part moving in a direction opposite to the first direction screw part, and integrally coupled to the outside of the first direction screw part and the second direction screw part, and the thickness of the handle part according to the movement of the first direction screw part and the second direction screw part; It includes an elastic material for changing the.

Further, in the present invention, the first directional screw portion is characterized by including a male screw which is a screw thread formed on the supporting rod, and a female screw formed to mesh with the male screw.

Further, in the present invention, the second directional screw portion includes a male screw which is a thread formed in a direction opposite to the first directional screw portion, and a female screw formed to engage with the male screw.

In addition, in the present invention, the elastic member is integrally coupled with the first direction screw portion and the second direction screw portion, it characterized in that it comprises a plurality of pieces of hard elastic material, and a soft elastic material surrounding the hard elastic material.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 2 and 3.

Figure 2a is an external view of the writing instrument adjustable thickness knob according to an embodiment of the present invention.

The writing instrument of FIG. 2A is composed of a body 10 and a handle portion 20 in contact with a user's hand below the body 10, and a core portion 30 performing a function of the writing instrument. Handle portion 20 is formed of a separate material from the body (10).

In order to explain the function of adjusting the thickness of the handle of the writing instrument of Figure 2a will be described as an example cut in part B-B 'in the vertical direction.

Figure 2b is a view showing the interior of the writing mechanism of Figure 2a.

The body 10 of FIG. 2B includes left screw portions 23a and 23b on the upper side of the support bar 11 and right screw portions 24a and 24b on the lower side.

The left screw portions 23a and 23b have a male screw 23a which is a screw thread formed on the supporting rod 11 and a female screw 23b which is formed to mesh with the male screw 23a. The right screw portions 24a and 24b have male threads 24a which are threads formed in the opposite directions to the left screw portions 23a and 23b, and female threads 24b which are formed to engage with the male threads 24a.

Such, the outer surface of the left screw portion (23a, 23b) and the right screw portion (24a, 24b) is wrapped, the hard to change the shape by receiving the elasticity according to the movement of the left screw portion (23a, 23b) and the right screw portion (24a, 24b) There is a second elastic material 22 of. In addition, the first elastic material 21 is provided on the outside of the second elastic material 22, the first elastic material 21 is to be in direct contact with the user's hand.

The first elastic material 21 and the second elastic material 22 are formed according to the shapes of the left screw portions 23a and 23b and the right screw portions 24a and 24b formed around the supporting rod 11. That is, as shown, the center part has a concave shape. Therefore, when a user wants to use thinly, it can use it as it is.

In Figure 2b, if the user wants to adjust the thickness of the handle portion 20, holding the body 10 to turn the handle portion 20 in the direction of the arrow. Then, as the second elastic material 22 rotates, the female screw 23b moves downward along the thread of the male screw 23a of the left screw portions 23a and 23b under the support of the supporting rod 11. That is, it moves in the direction A shown.

On the other hand, at the same time as the movement of the female screw 23b of the left screw portions 23a and 23b, the female screw 24b moves upward along the thread of the male screw 24a of the right screw portions 24a and 24b at the lower portion of the supporting rod 11. Will be moved to. That is, it moves in the direction B shown.

At this time, the two female screws (23b, 24b) is integrally coupled with the second elastic material 22, the user moves the direction by turning together as the handle 20 is rotated.

That is, since the second elastic material 22 is rotated by the user's hand gesture, and the two female screws 23b and 24b are coupled to the second elastic material 22, the second elastic material 22 rotates together with the second elastic material 22, and the male screw is rotated. It turns along the threads of 23a and 24a. Accordingly, the left screw portions 23a and 23b and the right screw portions 24a and 24b move in directions facing each other.

This result is as shown in Figure 2c. That is, Figure 2c shows a state in which the thickness of the knob of Figure 2b writing mechanism is adjusted to be thick.

2C shows a state in which the female screw 23b of the left screw portions 23a and 23b is moved downward, and the female screw 24b of the right screw portions 24a and 24b is moved upwards to the hard second elastic material 22. An elastic force is generated that causes the concave center portion to spread outward.

Therefore, the thin portion of the concave portion is deformed to the handle portion 20 is thick handle portion 20.

Hereinafter, the interior of FIGS. 2B and 2C will be described in more detail with reference to FIG. 3.

3A is an exploded perspective view of FIG. 2B.

3A shows the female screw 23b of the left-hand part of the left side of the support bar 11, and the female screw 24b of the right-hand part of the left side. For convenience in the manufacturing process, the diameter of the female screw 23b of the left screw portion should be larger than the diameter of the female screw 24b of the right screw portion. Although not shown, male threads 23a and 24a each form a thread in opposite directions inside the respective female threads 23b and 24b. Here, the direction of the male screw (23a, 24a) is a right-hand screw right above the core portion 30 for fitting the cover surrounding the core portion 30, the male screw (24a) is a right-hand screw, the other male screw (23a) is opposite Left screw in direction.

3A, the second elastic material 22 is coupled to the outer side of the female screws 23b and 24b. The second elastic material 22 is joined by a coupling ring in three pieces. Each of the second elastic members 22 has a latching jaw extending vertically. This is to combine with the engaging groove formed in the female screw (23b, 24b) to play a role of the rail when the female screw moves. The female screws 23b and 24b have a three-part locking groove along the cylinder, which is to be combined with three second elastic materials 22. When the second elastic material 22 is joined by the coupling ring, the center portion is concave and a gap is generated between the pieces. This is shown in Figure 4a. 4A is a cross-sectional view taken along line C-C 'in FIG. 2B. The first elastic material 21 is in close contact with the second elastic material 22, the second elastic material 22 is coupled by a coupling ring and a gap is generated.

Since the second elastic material 22 has two female screws 23b and 24b spaced apart from each other at regular intervals, the second elastic material 22 is coupled in a concave state. Then, the first elastic material 21 wraps around the second elastic material 22 and is coupled to the outer surface. Since the first elastic material 21 is an elastic material that is relatively softer than the second elastic material 22, the shape of the second elastic material 22 is maintained as it is.

Figure 3b shows an exploded perspective view when the thickness of the handle of the writing instrument as shown in Figure 2c is thickly adjusted. That is, the separated perspective view of Fig. 2c.

3B shows a female screw 23b on the left side of the left side of the support rod 11, and a female screw 24b on the left side of the right side of the supporting rod 11. It can be seen that the female screw 23b of the left screw portion moves along the thread of the male screw 23a, and the female screw 24b of the right screw portion moves in a direction facing each other along the screw thread of the male screw 24a. Therefore, the two female screws 23b and 24b are spaced at predetermined short intervals.

3B, the second elastic material 22 is coupled to the outer side of the female screws 23b and 24b. Since the two female screws 23b and 24b are spaced at predetermined short intervals, the gap between the pieces of the second elastic material 22 is widened. This is shown in Figure 4b. 4B is a cross-sectional view taken along the line D-D 'of FIG. 2C. In the second elastic material 22, a concave portion is opened by the direction movement of the female screws 23b and 24b, and a wide gap is generated between the pieces. Therefore, it can be seen that the diameter of the handle portion 20 is increased. Then, the first elastic material 21 wraps around the second elastic material 22 and is coupled to the outer surface. Similarly, since the first elastic material 21 is an elastic material that is relatively softer than the second elastic material 22, the shape of the second elastic material 22 is maintained as it is.

In the embodiment of the present invention, the second elastic material 22 has been described as having three pieces, but it is obvious that the number can be larger.

Therefore, the device of the present invention can easily adjust the handle of the writing instrument according to the user's taste and the size of the hand, the thickness of the handle can be adjusted to provide users with the effect of increasing the satisfaction with the product.

Claims (4)

In the writing instrument having a handle, A support rod 11 formed on the writing instrument; Located in the upper side of the support bar (11), the first direction screw portion (23a, 23b) to move as the handle portion is turned; A second directional screw portion 24a and 24b positioned at a lower side of the support rod 11 and moving in a direction opposite to the first directional screw portions 23a and 23b; And It is integrally coupled to the outside of the first directional screw portion 23a, 23b and the second directional screw portion 24a, 24b, and the movement of the first directional screw portion 23a, 23b and the second directional screw portion 24a, 24b. According to claim 1, wherein the thickness of the handle portion comprises an elastic material (21, 22) comprising a writing instrument that can adjust the thickness. The method of claim 1, The first direction screw portion (23a, 23b) is a handle thickness adjustment characterized in that it comprises a male screw 23a which is a screw thread formed on the support rod 11, and a female screw (23b) formed to mesh with the male screw (23a). Writing instruments available. The method of claim 2, The second directional screw portions 24a and 24b include a male screw 24a which is a thread formed in a direction opposite to the first directional screw portions 23a and 23b, and a female screw 24b formed to mesh with the male screw 24a. Writing instruments with adjustable thickness knob. The method of claim 1, The elastic members 21 and 22 are integrally coupled with the first directional screw portions 23a and 23b and the second directional screw portions 24a and 24b, and have a plurality of pieces of hard elastic materials 22, and the hard elasticity. Writing instrument with a handle thickness adjustable, characterized in that it comprises a soft elastic material (21) surrounding the ash.