JP2006142693A - Replacement lead case - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problems that a conventional mechanical pencil needs a replacement lead case to be always kept nearby for lead supply with a trouble such as the forgetting of a place for keeping the lead case or the short supply of replacement leads to be otherwise stored adequately in the case, and further, that the troublesome insertion of even a single piece of the replacement lead through a head of the mechanical pencil by deliberately picking it up, is not an easy job, especially for a child or an aged person, besides, with an extra attention to be paid to the possible breakage of the replacement lead and the soiling of a sheet by the hand smeared by the replacement lead often occurs. <P>SOLUTION: The replacement lead case can be used in the state that it is fitted into a replacement lead insertion part of the mechanical pencil. Alternatively, the replacement lead case is fitted into an eraser fitting part of the mechanical pencil. In addition, the case is equipped with a dial for adjusting the number of droppings of the replacement lead, and the inserted replacement lead can be seen through. Besides, the shape of the case is polygonal, e.g. circular, triangular or square. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a mechanical pencil replacement core case.

When inserting an extra lead into a mechanical pencil, one extra lead was picked from the extra lead case with a fingertip, the eraser plug on the mechanical pencil head was pulled out, and an extra lead was inserted from there.
JP 2003-2111893 A

  However, in the case of such a mechanical pencil, the refill case must always be stored nearby, and there are inconveniences such as forgetting the storage location and lack of stock refill in the refill case. . Also, it is not easy for infants and elderly people to pick up one extra lead and insert it from the head of the mechanical pencil to put the extra lead into the mechanical pencil, so that the extra lead will not break. There were also problems such as having to pay close attention to the nerves and tedious work that was time-consuming, and that the hands were soiled by the extra lead and the paper was soiled.

  In order to achieve the above object, the present invention is characterized in that the invention according to claim 1 can be used in a state in which a replacement core case is inserted into a replacement core insertion portion of a mechanical pencil.

  Further, the invention according to claim 2 is characterized in that the extra lead case according to claim 1 is inserted into the eraser mounting portion of the mechanical pencil.

  The invention described in claim 3 is characterized in that the replacement core case described in claim 1 includes a dial for adjusting the number of drops of the replacement core.

  According to a fourth aspect of the present invention, the replacement core case according to the first aspect can be seen through insertion of the replacement core according to the third aspect.

  According to a fifth aspect of the present invention, the extra lead case according to the first aspect is characterized by a polygonal shape such as a circle, a triangle, or a quadrangle.

  According to the first aspect of the present invention, the replacement core case can be used in a state where the replacement core insertion part is inserted into the replacement core insertion portion of the mechanical pencil, so that the replacement core case does not need to be stored in another place.

  According to the invention described in claim 2 of the present invention, since the replacement core case is inserted into the eraser mounting portion of the mechanical pencil, in order to insert the replacement core into the mechanical pencil, it is necessary to bother to pick one replacement core and sharpen it. There is no need to put it in from the head of the pencil, so that troublesome work that is troublesome for infants and elderly people can be omitted, and there is no possibility that the hand gets dirty due to the work of changing the core and the paper is not stained.

  According to the invention described in claim 3 of the present invention, the replacement core case can be provided with a dial for adjusting the number of replacement cores to be dropped so that the required number of replacement cores can be inserted into the mechanical pencil.

  According to the invention described in claim 4 of the present invention, since the insertion of the replacement core can be seen through, the inconvenience such as the absence of the replacement core of the stock in the replacement core case can be solved.

  According to the invention described in claim 5 of the present invention, the shape can be manufactured in a polygon such as a circle, a triangle, or a quadrangle, so that it matches the shape and design of various mechanical pencils.

  It can be used with the extra lead case inserted in the extra lead insert of the mechanical pencil. Further, the extra lead case is inserted into the eraser mounting portion of the mechanical pencil. The replacement lead case includes a dial that adjusts the number of replacement lead drops. Further, the replacement core case can be seen through insertion of the replacement core. Further, the extra lead case is manufactured in a polygonal shape such as a circle, a triangle, or a rectangle.

  Examples will be given below, and the spare core case of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a cross-sectional view of a mechanical pencil according to the present invention in which a replacement core case is inserted.

  FIG. 2 is a cross-sectional view of a mechanical pencil.

  FIG. 3 is a cross-sectional view from the front of the extra lead case according to the present invention.

  FIG. 4 is a cross-sectional view from the bottom of the extra lead extraction dial of the extra lead case according to the present invention.

  FIG. 5 is an exploded perspective view of FIG.

  In FIG. 2, a conventional mechanical pencil 1 is composed of a barrel 4 and a member connected to the barrel 4, a tube 5 for storing an internal replacement core, a member connected to the tube 5, and an eraser plug 2. When the eraser stopper 2 is knocked, the core is sent out by the member connected to the tube 5.

  An eraser plug 2 is attached to the replacement core insertion port of the tube 5. The eraser plug 2 has a larger cylindrical shape than the tube. The eraser stopper 2 also functions as a lid for preventing the replacement core from protruding from the tube 5.

  The eraser stopper 2 is covered with an eraser cover 3. Even if the eraser cover 2 is knocked with the eraser cover 3, the lead is not hindered.

  Since the replacement lead is reduced each time it is used, it is necessary to replenish it in a timely manner. One had to be removed from the case and inserted into the tube 5.

  The operation of inserting the replacement core 6 requires excellent sight and dexterity at the hands because the inner diameter of the tube 5 is narrow and is hidden in the trunk 4, so that it is very difficult for elderly people and children. It was a difficult task.

  In FIG. 1, the eraser plug 2 described in FIG. 2 is removed, and the replacement case insertion portion 10 of the replacement case 7 of the present invention is inserted therein.

  The extra lead case 7 is used as it is inserted into the mechanical pencil 1.

  When the replacement lead 6 is supplied to the mechanical pencil 1, only one replacement lead is supplied by the replacement lead extraction dial 9.

  Since the extra lead case 7 of the present invention can be used simply by being inserted into the place of the eraser plug 2 that the conventional mechanical pencil 1 normally has, the special mechanical pencil 1 is processed specially for the present invention. do not need.

  The length of the extra lead case 7 of the present invention is adjusted to the length of the extra lead.

  The shape may be a cylindrical shape or a prismatic shape such as a triangle, a square or a pentagon. FIG. 4 of this embodiment depicts a cylindrical shape as a model.

  In FIG. 3, in order to store the replacement core 6 in the replacement core case 7 of the present invention, which is a sectional view of the replacement core case 7 of the present invention, the replacement core cover 8 is opened and the replacement core 6 is stored.

  In order to insert only one of the several replacement cores 6 into the tube 5, only one replacement core is pulled out from the replacement case 7 by the replacement core extraction dial 9 and the replacement core guide hole 11. And is inserted into the tube 5.

  The replacement lead guide hole 11 has a mortar shape, and when only one replacement lead 6 is pulled out by the replacement lead extraction dial 9, the replacement lead guide hole 11 is smaller than the inner diameter of the tube 5. Since it is in close contact with the inner diameter portion, it is inserted into the tube 5.

  4 and 5, the mechanism of the replacement core extraction dial 9 part in which only one replacement core is extracted by the replacement core extraction dial 9 will be described.

  First, the extra lead extraction dial 9 is composed of a drive ring 12 and a triangular rotating plate 13 fixed to the drive ring 12, and a fixed platen 17 is continuously provided thereon.

  Further, the drive ring 12 and the triangular turntable 13 rotate simultaneously.

  Further, one rotary disk replacement core hole 16 is opened at the center point of the fixed platen 17.

  In addition, several replacement core through holes 15 are opened in the triangular turntable 13.

  In addition, several replacement core through holes 15 are opened in the triangular turntable 13 and rotate around the rotation center axis 14 as a center axis.

  Further, the replacement core through hole 15 coincides with the opening hole at the center point of the fixed platen 17.

  Further, when the drive ring 12 is rotated, only one of the replacement cores 6 is replaced when the replacement core through-hole 15 is aligned with the rotary plate replacement core hole 16 at the central point of the stationary platen 17. Insert into the core guide hole 11.

  Further, the rotation center axis 14 of the triangular turntable 13 is shifted in one direction from the center point of the circle, so that the several replacement core through holes 15 are one rotation plate replacement center hole at the center point of the fixed plate 17. 16 can be matched in order.

  Several replacement cores 6 are inserted into each of the several replacement core through-holes 15, but the replacement cores 6 are only aligned in order with one turntable replacement core hole 16 at the center of the fixed platen 17. Is inserted into the lead guide hole 11.

  The replacement core 6 passes through the two holes of the replacement core through hole 15 of the triangular rotating disk 13 and the rotating disk replacement core hole 16 at the center of the fixed disk 17 and reaches the replacement core guiding hole 11.

  The number of remaining cores 6 can be confirmed by using a transparent plastic resin for the material of the core replacement case 7 of the present invention. It can be seen through through 11 and inserted into the tube 5.

  Further, the design effect can be enhanced by making the shape of the extra lead case 7 into a polygon such as a circle, a triangle or a rectangle.

  The present invention relates to a replacement core case that is fitted into an eraser plug portion of a mechanical pencil.

It is sectional drawing which inserted the extra lead case in the mechanical pencil concerning this invention. It is sectional drawing of the mechanical pencil concerning this invention. It is sectional drawing from the front of the extra lead case concerning this invention. It is sectional drawing of the lower part of the extra lead extraction dial of the extra lead case concerning this invention. FIG. 5 is an exploded perspective view of FIG. 4 according to the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mechanical pencil 2 Eraser plug 3 Eraser cover 4 Body 5 Tube 6 Replacement core 7 Replacement core case 8 Replacement core cover 9 Replacement core extraction dial 10 Replacement core case insertion part 11 Replacement core guide hole 12 Drive ring 13 Triangular turntable 14 Rotation center shaft 15 Replacement core through hole 16 Replacement plate replacement core hole 17 Fixed platen

Claims (5)

  An extra lead case that can be used in a state where the extra lead case is inserted into the extra lead insertion part of the mechanical pencil.   The replacement core case according to claim 1, wherein the replacement core case is fitted into an eraser mounting portion of a mechanical pencil.   The replacement core case according to claim 1, further comprising a dial that adjusts the number of drops of the replacement core.   The replacement core case according to claim 1, wherein insertion of the replacement core according to claim 3 can be seen through.   The replacement core case according to claim 1, wherein the replacement core case is characterized by a polygonal shape such as a circle, a triangle, or a quadrangle.

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