JP2020157539A - Refill lead case for mechanical pencil - Google Patents

Abstract

To provide an easy-to-use refill lead case for a mechanical pencil capable of easily taking out a desired number of refill leads by simple operation in a simple structure.SOLUTION: In the refill lead case 1 for a mechanical pencil, a case body and a cover member turn in a fan-shaped manner with a part to be coupled as a fulcrum to make a lead take-out port 2a openable/closable by causing an abdominal part 2f of an opposite side outside of a rear plane part of the case body and a slide rear face plate part outer face of the cover member to relatively slide.SELECTED DRAWING: Figure 4

Description

The present invention relates to a mechanical pencil replacement core case including at least a bottomed tubular case body for accommodating a mechanical pencil replacement core and a cover member capable of closing the replacement core outlet.

Conventionally, as a mechanical pencil replacement core case that can take out a mechanical pencil replacement core with a simple operation, the case body and the cover member can be relatively fan-shapedly connected to the bottom portion of the case body. It is known that the portion is formed as a rotation fulcrum (Patent Document 1 and Patent Document 2).
As a means of opening the mechanical pencil replacement core case by another simple operation, slide the cover member placed in the opening of the case body sideways so that the mechanical pencil replacement core is exposed from the opening of the case body. (Patent Document 3) or a cover member that is rotated in a fan shape. The cover member rotates and opens by moving the container body inside the exterior so that the rotation fulcrum moves along the guide. It is known that the end portion of the replacement lead for a mechanical pencil is exposed to the outside when the cover member is opened (Patent Document 4).

JP-A-2007-45052 Utility Model Registration No. 3095777 Japanese Unexamined Patent Publication No. 2016-94221 Jikkenhei 7-17584

In the one disclosed in Patent Document 1, a fixed number of mechanical pencil replacement cores are dropped into a groove formed in the case body by operating the case body and the cover member to rotate relatively in a fan shape with one hand. , I have taken out the replacement lead for mechanical pencils, but since a fixed number is set in advance, it is not possible to adjust the number of take-outs to take out the required number at that time, and it does not meet the required number. In some cases, it takes time and effort to rotate the case body and the cover member multiple times, and if the number is excessive for the required number, the unnecessary replacement lead for mechanical pencil is replaced for mechanical pencil. It took time to put it back in the lead case.
Further, in the ones disclosed in Patent Documents 2 to 4, since the end portion of the mechanical pencil replacement core is exposed in the open state, the required number can be adjusted and picked with a finger. Since the cover member that slides near the replacement core take-out port is arranged, the hand comes into contact with the replacement lead for mechanical pencils when the cover member is opened, and the hand becomes dirty or the replacement lead for mechanical pencils is broken. There is concern about doing so.
As disclosed in Patent Document 2 and Patent Document 4, the mechanical pencil replacement core protrudes in conjunction with the opening operation of the cover member, and the mechanical pencil replacement core is exposed from the replacement core extraction port of the case body. In some cases, the mechanism becomes complicated, and it is necessary to properly match the operation when opening and closing the cover member with the timing at which the mechanical pencil replacement lead is pushed out. If the timing is not correct, the mechanical pencil replacement lead is pushed out with the cover member. There is a risk that the mechanical pencil replacement core may be broken due to collision, and it takes time and effort to manage the dimensional accuracy of each part.

In view of the above problems, it is an object of the present invention to provide an easy-to-use mechanical pencil replacement core case having a simple structure and easily taking out a desired number of mechanical pencil replacement cores by a simple operation. ..

The present invention comprises at least a bottomed tubular case body for accommodating a mechanical pencil replacement core and a cover member capable of closing the replacement core outlet, and a case body and a cover member are provided on a bottom portion of the case body. The case body is replaced with a position shorter than the total length of the mechanical pencil replacement core, which accommodates the distance from the inner bottom of the case body to the replacement core extraction port. A lead take-out port is formed so that the end of the mechanical pencil replacement lead is exposed in the open state, and the cover member is a portion between the cover member covering the lead take-out port and the joint required portion between the case body. In addition to having a slide back plate portion whose inner surface is flat, a slidable back plane portion is also formed on the surface of the case body facing the slide back plate portion, and the abdomen on the opposite side of the back plane portion of the case body is formed. , Slide of the cover member For mechanical pencils, the case body and the cover member rotate in a fan shape with the connection required as a fulcrum by sliding the outer surface of the back plate, and the replacement lead outlet can be opened and closed. The gist is a replacement lead case.

In the present invention, the case body and the cover member are relatively slid by sandwiching the abdomen on the opposite side of the back flat portion of the case body and the outer surface of the slide back plate portion of the cover member with fingers or the like and sliding them relatively. Since the replacement lead outlet is opened and closed by rotating it in a fan shape, there is no need to match the operation when opening and closing the cover member with the timing at which the replacement lead protrudes, and the cover member and the replacement lead for mechanical pencils collide. , There is no risk of breaking the replacement lead for mechanical pencils, and because it is a simple mechanism, it is easy to manage the dimensional accuracy of each part, it is possible to supply parts stably and it can be manufactured at low cost, and the case body It can be opened and closed at a position away from the replacement lead outlet, preventing accidental contact of the mechanical pencil replacement lead with your hands and breaking the mechanical pencil replacement lead. Since the replacement lead for mechanical pencils is exposed from the replacement lead outlet of the case body, the required number of replacement lead for mechanical pencils can be taken out from the replacement lead outlet.

An exploded perspective view from the front of this embodiment. An exploded perspective view seen from the back surface of FIG. FIG. 1 is a perspective view from the front when not in use. FIG. 1 is a perspective view from the front when the replacement core outlet 2a is opened.

The mechanical pencil replacement core case of the present invention includes a bottomed tubular case body for accommodating the mechanical pencil replacement core, and a cover member capable of closing the replacement core outlet. The shape of the case body and the cover member is preferably a flat box shape for the convenience of sliding both to open and close, but the advantages of the present invention such as convenience of operation and ease of manufacture are not impaired. In the range, it may be a cylindrical type, an elliptical cylinder type, a triangular box type with a cross section, a quadrangular box type with a cross section, or a polygonal box type with a cross section.

A connecting portion, which serves as a fulcrum for the case body and the cover member to rotate in a relatively fan-like manner, is formed in the bottom portion of the case body. The connecting portion requires that a convex portion is formed on one of the case body and the cover member and a concave portion or a hole into which the convex portion is fitted is formed on the other side, or the eyelet member is fitted into the concave portion or the hole formed in both. For example, it suffices if the cover member and the case body can be rotated in a relatively fan-like manner, which can be appropriately performed.

In the case body, a replacement lead outlet is formed at a position shorter than the total length of the replacement lead for mechanical pencils that accommodates the distance from the inner bottom of the case body so that the end of the replacement lead for mechanical pencils is exposed in the open state. I'm doing it. The shape of the replacement core outlet may be rectangular, circular, elliptical, triangular, quadrangular, or other polygonal, and may be different from the outer shape.

The cover member has a slide back plate portion having a flat inner surface between the cover portion covering the replacement core take-out port and the connection required portion with respect to the case body. The surface of the case body facing the slide back plate portion of the cover member is also formed as a slidable back plane portion. The shape is a flat surface, but it suffices if the case body and the cover member can rotate relatively in a fan shape. For example, a corrugated plate shape or a grid shape is formed by forming a gap between the two. It may be a flat surface having irregularities of the above, or the shapes of each other may be an uneven relationship along a fan-shaped rotation trajectory. However, it can be said that smooth surfaces are more advantageous in terms of manufacturing and operation.

By forming a protrusion on one of the cover member and the case body and forming a fitting portion of the protrusion on the other, the cover member can be a mechanism for maintaining the state in which the replacement core take-out port is closed. Further, it is possible to maintain the rotation position of the cover member by adjusting the frictional resistance of the sliding surfaces facing each other, regardless of the fitting of the unevenness.
Alternatively, the relative rotation can be controlled by using a component configuration such as an elastic member, a piston or a damper between the cover member and the case body.

The materials constituting the case body and the cover member are AS resin (acrylonitrile styrene copolymer), ABS resin (acrylonitrile butadiene styrene copolymer), PC resin (polycarbonate), PS resin (polystyrene), PP resin (polypropylene), and the like. Various synthetic resins such as PET resin (polystyrene terephthalate) can be used.
In addition, if the case body and the cover member are made of the same material, the affinity between the materials is high and sliding defects may occur due to biting. It is preferable to apply a lubricant such as grease. Further, the case body is preferably made of a highly transparent resin such as AS resin so that the replacement lead for the mechanical pencil to be accommodated can be seen.
Further, it may be a transparent color, a translucent color, or colored, and can be appropriately selected depending on the intended use. In addition, metal can be used to give a sense of quality, and the material is not particularly limited. Alternatively, the exterior surface may be a glossy surface or a textured surface, and decoration such as printing may be applied.

An example of the replacement core case 1 for a mechanical pencil of the present invention will be described with reference to FIGS. 1 to 4. Hereinafter, the replacement core take-out port 2a side of the case body 2 is referred to as an upward direction, the bottom 2b side is referred to as a bottom direction, the front side is referred to as a front direction, and the back side is referred to as a back direction.

As shown in FIG. 1 and FIG. 2, which is an exploded perspective view of FIG. 1 and is an exploded perspective view of an embodiment, the mechanical pencil replacement core case 1 is flat for accommodating the mechanical pencil replacement core 3. It is composed of a box-shaped bottomed tubular case body 2 and a flat box-shaped cover member 4 capable of closing the replacement lead take-out port 2a.
A convex portion 2c of the case body 2 and a coupling hole 4a of the cover member 4 are formed in the bottom direction portion of the replacement core case 1 for a mechanical pencil, and the convex portion 2c is inserted into the coupling hole 4a and fitted. As a result, the case body 2 and the cover member 4 form a joint-required portion that can rotate in a relatively fan-like manner.
The case main body 2 forms a rectangular replacement lead outlet 2a at a position shorter than the total length of the mechanical pencil replacement lead 3 accommodated by the distance from the inner bottom portion 2d of the case body 2, and the mechanical pencil is opened. The end of the replacement lead 3 is exposed to the outside. The length at which the end of the mechanical pencil replacement core 3 is exposed can be adjusted as appropriate, but it is accommodated assuming that the mechanical pencil replacement core 3 is diagonally arranged inside the case body 2 or when it is picked with a fingertip. It is preferably 50% or more and 98% or less of the total length of the replacement lead 3 for mechanical pencils. Further, 80% or more and 97% or less are more preferable, and the length at which the end portion of the mechanical pencil replacement core 3 is exposed is preferably 1.8 mm or more and 12 mm or less.

The inner bottom portion 2d of the case body 2 is made flat so that the ends of the mechanical pencil replacement cores 3 housed in the case body 2 are exposed to the outside, but the mechanical pencil replacement cores 3 are slanted in advance. It may be sloped for placement. Further, as long as the end portion of the mechanical pencil replacement core 3 described above is within the range exposed to the outside, it may be semicircular, U-shaped, or V-shaped.

The cover member 4 has a slide back plate portion 4c having a flat inner surface between the cover portion 4b that covers the replacement core take-out port 2a and the coupling required hole 4a that serves as a coupling required portion with respect to the case body 2. There is. The surface of the case body 2 facing the slide back plate portion 4c of the cover member 4 is also formed as a slidable back flat portion 2e.
The case body 2 slides with the abdomen 2f on the opposite side of the back plane portion 2e and the outer surface 4d of the slide back plate portion of the cover member 4 sandwiched between the case body 2 and the cover member 4 with the convex portion 2c as a fulcrum. It rotates in a fan shape so that the replacement core take-out port 2a can be opened and closed.
With the above configuration, the opening and closing operation can be performed at a position away from the replacement lead outlet 2a of the case body 2, so that the hand may accidentally come into contact with the replacement lead 3 for mechanical pencils, and the hand may become dirty or sharpened. It is possible to prevent the replacement lead 3 for pencils from being broken, and the replacement lead 3 for mechanical pencils is exposed from the replacement lead take-out port 2a of the case body 2, so that the replacement lead case 1 for mechanical pencils is shaken or shaken. It is possible to take out the mechanical pencil replacement lead 3 without tilting it, and the mechanical pencil replacement lead 3 will not be scattered on the desk, and the mechanical pencil replacement lead 3 will be taken out from the lead pencil take-out port 2a. You can take out the required number of pencils.

The case container main body 2 has a replacement core accommodating portion for accommodating a mechanical pencil replacement core 3, a replacement core outlet 2a is provided above the replacement core accommodating portion, and a side wall of the replacement core extraction port 2a. The upper side wall 2h is formed so as to project upward from 2 g, and serves as a guide for the exposed mechanical pencil replacement core 3 when the cover portion 4b is opened.
Further, on the front surface of the case body 2, a guide groove 2i on which the protruding portion 4e of the cover portion 4b slides is provided, and the track during the opening / closing operation of the cover portion 4b is guided and rattles. Is suppressed. Further, the side wall 2g is extended below the side wall 2g formed in the vicinity of the bottom 2b so that foreign matter is not mixed in the vicinity of the connection required portion to prevent malfunction.

When the mechanical pencil replacement core 3 is running low, the case body 2 can be tilted toward the upper side wall 2h, so that the mechanical pencil replacement core 3 can be taken out using the upper side wall 2h as a guide. Alternatively, a mechanical pencil replacement core having a core diameter of 0.2 and a core diameter of 0.3, which is thin and weak in strength, is similarly sharpened by tilting the case body 2 toward the upper side wall 2h side and using the upper side wall 2h as a guide. The replacement lead 3 for the pencil can be taken out without worrying about breaking.

1 Replacement core case for mechanical pencil 2 Case body 2a Replacement core outlet 2b Bottom 2c Convex part 2d Inner bottom 2e Back flat part 2f Abdomen 2g Side wall 2h Upper side wall 2i Guide groove 3 Replacement core for mechanical pencil 4 Cover member 4a Coupling required Hole 4b Cover part 4c Slide back plate part 4d Slide back plate outer surface 4e Protruding part

Claims (1)

It consists of at least a bottomed tubular case body that houses a replacement lead for mechanical pencils and a cover member that can close the replacement core take-out port, and the case body and the cover member are attached to the bottom portion of the case body. A connecting portion that can rotate in a relatively fan shape is formed, and the case body is shorter than the total length of the mechanical pencil replacement core that accommodates the distance from the inner bottom portion of the case body to the replacement core extraction port. The replacement core take-out port is formed at the position so that the end portion of the replacement lead for mechanical pencil is exposed in the open state, and the cover member is the cover member covering the replacement core take-out port and the case body. A slide back plate portion having a flat inner surface is provided between the joint portion and the slide back plate portion, and a slidable back flat portion is also formed on the surface of the case body facing the slide back plate portion. By relatively sliding the abdomen on the opposite side of the back flat portion of the case body and the outer surface of the slide back plate portion of the cover member, the case body and the cover member can form the connecting portion. A replacement lead case for mechanical pencils that rotates like a fan as a fulcrum and can open and close the replacement lead outlet.

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