JP2014042992A - Spare lead case - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spare lead case which takes a conventional problem or the like into consideration, prevents damage on a case main body, and can be used by selecting a favorite color and pattern or the like of a user.SOLUTION: A spare lead case for a mechanical pencil includes: a case main body which has at least a front wall surface, a rear wall surface, and a bottom wall surface, and can store spare leads inside; and a cover body which opens and closes a spare lead outlet arranged on a tip part of the case main body. The case cover is detachably mounted on the case main body. The case cover includes: a bottom piece which is positioned on a front surface side of the bottom wall surface of the case main body and protects the bottom wall surface; a display piece which is positioned on a front surface side of the front wall surface or the rear wall surface of the case main body, and protects the front wall surface or the rear wall surface; and an opening part which opens one piece on an opposite side to either of the bottom piece or the display piece so as to insert and remove the case main body.

Description

  The present invention relates to a replacement core case that accommodates a core for a mechanical pencil, and more particularly to a replacement core case in which a case cover is detachably attached to a case body of a replacement core case.

  2. Description of the Related Art Conventionally, a replacement core case is required to be visible from the outside so as to know the remaining amount of replacement core accommodated therein. However, since the replacement core is a self-abrasive body, if the replacement core moves inside the case due to movement or the like, there is a problem that core powder is generated and the appearance is deteriorated. In addition, although depending on the type of the replacement core, depending on the components to be used, such as a coloring material to be used, there is a possibility that problems such as discoloration may occur in light resistance. In order to solve these problems, Japanese Utility Model Laid-Open No. 7-27882 “Replacement Core Storage Case” discloses that the transparency of the back wall surface of the case body is higher than the transparency of the front wall surface.

  Japanese Patent Laid-Open No. 2006-43973 “Replacement Core Case” discloses a structure in which a soft member is attached to the case body by insert molding or the like in order to prevent damage to the replacement case housed inside the case body. Yes.

"Japanese Utility Model Publication No. 7-27882" "Japanese Patent Laid-Open No. 2006-43973"

  However, Patent Document 1 discloses that the case body has a two-part configuration and the case body is printed on the surface in order to make the front and back surfaces different in transparency. If the print is peeled off, there will be no difference in transparency, or the appearance will deteriorate, which may cause new problems such as the peel strength between the case body and the print. It was.

  By the way, in recent years, many writing instruments have been proposed in which an axial color, a grip color, a fragrance, and the like can be appropriately selected and used according to the user's preference. However, in the replacement core case, there is a need for a replacement core case that can change the color due to the difference in the core diameter and can be selected and used by the user.

  In addition, attention is also paid to environmental problems such as recycling, and it is desired to separate the materials when discarded or to reuse the collected materials. Similarly, it is necessary to display the resin to be used on the case body in order to obtain a designated display product based on the effective resource utilization promotion method in the synthetic resin replacement core case.

  An object of the present invention is to provide a spare case capable of preventing a case body from being damaged and selecting and using a color or a pattern that suits a user's preference in view of the above-described conventional problems. It is to be.

The present invention includes a case main body having at least a front wall surface, a back wall surface, and a bottom wall surface and capable of accommodating a replacement core therein, and a lid body that opens and closes a replacement core outlet provided at a distal end portion of the case main body. A mechanical pencil replacement core case in which a case cover is detachably attached to the case body, wherein the case cover is located at least on the surface side of the bottom wall surface of the case body, and the bottom wall surface is A bottom piece to be protected, a display piece that is positioned on the front or back wall surface of the case body, and that protects the front or back wall surface, and a piece that faces either the bottom piece or the display piece. It has an opening and an opening that can be inserted and removed from the case main body.
In the present invention, “front” indicates the lid side in the longitudinal direction of the lead core case, and “rear” indicates the bottom wall surface side.

  The display piece may have a planar shape or an arc shape with no step on the surface.

  Further, the surface area of the display piece is larger than the surface area of the front wall surface or the back wall surface of the case body.

  Further, the case cover is characterized in that the cover body is mounted so that the replacement core opening can be opened and closed.

  Furthermore, the center of gravity of the replacement core case to which the case cover is attached is located on the bottom side of the middle of the total length of the replacement core case in the longitudinal direction.

  Furthermore, an engaging portion is provided on the outer surface of the case body, an engaged portion is provided on the inner surface of the display piece or the bottom piece, and the case main body is inserted through the opening by the engaging portion and the engaged portion. It is characterized in that it is detachably engaged in the direction of movement and the direction of removal.

  Furthermore, the bottom piece is connected to only the display piece, and the bottom piece is elastically deformed with a connection portion with the display piece as a fulcrum, and can be expanded rearward.

  The surface of the front or back wall surface of the case body and the inner surface of the display piece of the case cover are separated from at least a part of the surface of the front or back wall surface of the case body and the inner surface of the display piece of the case cover. It is characterized by having a non-contact part.

  According to the first configuration of the present invention, the case cover includes at least a bottom piece positioned on a surface of a bottom wall surface of the case body, a display piece positioned on a surface of a front wall surface or a back wall surface of the case body, It has an opening that opens one piece on the side facing the bottom piece and / or the display piece, and the case body can be inserted and removed from the opening, thereby suppressing damage to the case body and opening in advance. Since the case main body can be inserted and removed from the opening, only the case cover can be easily replaced, and the case cover that suits the user's preference can be selected and used.

  In addition, resin materials such as PC resin, PET resin, PE resin, ABS resin, AS resin, and PP resin, and metal materials such as stainless steel, copper alloy, and aluminum can be used for the case body of the present invention. It is preferable to use resin in consideration of cost and weight, and among resins, PC resin, AS resin, and the like are preferable in consideration of durability and the like. Furthermore, the case cover has a hard resin material such as PC resin, PET resin, PE resin, ABS resin, AS resin, and nylon, soft resin material such as silicone rubber, olefin elastomer, and styrene elastomer, stainless steel, copper A metal material such as an alloy or aluminum can be used, and it is preferable to use a hard resin material or a soft resin material having a lower hardness than the material used for the case body described above in consideration of impact resistance. In view of properties and film transfer, ABS resin, PP resin and the like are preferable.

  According to the 2nd structure of this invention, there exists an effect which can perform film transfer and printing to a display piece easily by making the said display piece into the planar shape or circular arc shape without a level | step difference in the surface.

  The display piece of the case cover described above has a flat shape or a circular arc shape without a step, but a flat shape or a circular arc shape without a step indicates that there is no large unevenness, for example, an unevenness of 0.1 mm or more. It is not necessarily a mirror surface. In view of film transfer and printability, a planar shape is preferable.

  By the way, when verifying the phenomenon of dropping the extra lead case from the desktop, the hand that grabs the extra lead case may slip and drop, but most of them are placed on the extra lead case placed on the desk. Elbows, books, notebooks, etc. will hit and drop. Therefore, by making the surface of the display piece flat with no irregularities, the contact area with the desktop increases, and it is easy to maintain a stable state even if the display piece is placed on the desk with the display piece on the bottom. There is also an effect that can be made difficult.

  According to the third configuration of the present invention, the area of the surface of the display piece is larger than the surface area of the front wall surface or the back wall surface of the case main body, so that the case main body can be impacted and damaged when dropped. It is easy to relax, the width of the design, such as a desired character or pattern, can be expanded, the character can be enlarged, and it can be suitably used for putting a name.

  According to the 4th structure of this invention, the said cover can mount the replacement core taking-out operation without trouble, when the said cover body mounts | wears with a replacement core opening so that opening and closing is possible.

  According to the fifth configuration of the present invention, the center of gravity of the replacement core case to which the case cover is attached is accidentally dropped from the desk by being positioned on the bottom side from the middle of the total length of the replacement core case in the longitudinal direction. When it does, it is easy to fall from the bottom one side of a case cover, and there exists an effect which can suppress damage to a case main part and a lid. In addition, even if the replacement core case with the case cover is placed on a horizontal surface such as a desk or a display shelf with the bottom piece facing down, an effect is easily maintained. In addition, when the center of gravity of the replacement core case to which the case cover is attached is positioned on the display side from the middle of the total thickness of the replacement core case in the thickness direction, the case cover is accidentally dropped from the desktop. It is easy to drop from the display piece side, and it is possible to make the contained lead core more difficult to break due to the synergistic effect with the longitudinal center of gravity.

  According to the sixth configuration of the present invention, the engaging portion is provided on the outer surface of the case body, the engaged portion is provided on the inner surface of the display piece or the bottom piece, and the engaging portion and the engaged portion are By detachably engaging the case body in the direction of inserting and removing the case body from the opening, it is possible to prevent the case body and the case cover from being easily detached during carrying, etc. Since it is detachable in the direction or the direction of removal, it can be easily engaged and disengaged.

  According to the seventh configuration of the present invention, the bottom piece is connected to only the display piece, and the bottom piece is elastically deformed with a connection portion with the display piece as a fulcrum, and can be expanded rearward. As a result, when the case body and the case cover are mounted, there is an effect of absorbing variation in the longitudinal direction of the case body by the structural elastic deformation of the bottom piece.

  According to the eighth configuration of the present invention, at least part of the surface of the front or rear wall surface of the case body and the inner surface of the display piece of the case cover, and the surface of the front or rear wall surface of the case body By having a non-contact part that is separated from the inner surface of the display piece of the case cover, the product name, material name, pattern, etc. attached to the case body by printing, film transfer, sticker sticking, etc. are peeled off by replacing the case cover Can be difficult. In addition, by providing a window part that allows the case body to be visually recognized from the outside on the display piece of the case cover, for example, a desired seal or the like can be attached to the case body to obtain a unique replacement core case. .

  In view of the above-described conventional problems and the like, the present invention provides a spare case that can prevent damage to the case body and can select and use a color or pattern that suits the user's preference. I was able to.

It is an external appearance perspective view which shows the replacement core case in embodiment. It is the figure seen from the surface side in FIG. It is the figure seen from the back side in FIG. It is a longitudinal cross-sectional view of the extra lead case in embodiment. It is a longitudinal cross-sectional view of the case main body in FIG. It is the external view which looked at the back wall surface side of the case main body in FIG. It is an external appearance perspective view which shows the case cover in FIG. It is the external view which looked at the case cover in FIG. 2 from the surface side.

  Embodiments of the present invention will be described below with reference to the drawings. In addition, the same number is attached | subjected about the same member and the same component in drawing.

  1 to 8, the case main body 2 is made of a colored transparent synthetic resin, and has a front wall surface 2A, a back wall surface 2B, a side wall surface 2C, and a bottom wall surface 2D. It is formed in a box shape with an open tip. The case body 2 has a mounting recess formed on the inner surface of the side wall of the tip. The lid fixing member 3 is inserted into the mounting recess, and the protrusion of the lid fixing member 3 is fitted into the engagement hole 2E of the case body 2. It is installed. The front end portion of the case body 2 is configured such that the side walls are notched and the front end portions of the front wall surface 2A and the back wall surface 2B can be appropriately elastically deformed. 2E is formed.

  Further, the lid 4 is rotatably fitted to the lid fixing member 3. Specifically, the rotation axis of the lid body 4 is fitted into the mounting hole of the lid fixing member 3, and the lid body 4 is rotatable with respect to the lid fixing member 3 by this fitting portion R. A lid body 4 is detachably fitted to a protrusion formed on the lid fixing member 3. In addition, the protrusion formed in the lid fixing member 3 is closed when the lid 4 is fitted to the projection formed on the lid fixing member 3 (the lid is closed), and the replacement outlet of the lid fixing member 3 is closed. In the state where the lid body 4 is rotated and the fitting is removed (the lid body is opened), the replacement core outlet of the lid fixing member 3 is opened and the replacement core (not shown) can be taken out. .

  A case cover 5 made of an opaque white synthetic resin is detachably attached to the case body 2. Specifically, the case cover 5 includes a display piece 5A located on the surface of the back wall surface 2B of the case body 2, a bottom piece 5B located on the surface of the bottom wall surface 2D of the case body 2, and a side wall surface 2C of the case body 2. The side piece 5C located on the surface of the display piece 5C is provided, and an opening K1 having an opening on the surface side facing the display piece 5A and an opening K2 having an opening on the front end side facing the bottom piece 5B are provided.

  In addition, the side pieces 5C of the case cover 5 are provided with protrusions 5CA protruding inward. The distance P between the protrusions 5CA of the side piece 5C of the case cover 5 is smaller than the width Q of the case body 2 and a part of the protrusion 5CA is located on the front wall surface 2A of the case body 2. Similarly, the protrusion 5BA provided on the bottom piece 5B is provided so that a part of the protrusion 5BA is located on the surface side of the bottom wall surface 5D.

  Furthermore, a notch 5E is provided at the tip of the display piece 5A of the case cover 5, and a part of the lid 4 is exposed to the outside. Therefore, with the case cover 5 attached to the case body 2, the lid body 4 can be rotated to take out the replacement core.

  The display piece 5A has a planar shape with no step on the surface, and the surface area of the display piece 5A is larger than the surface area of the back wall surface 2B of the case body. In addition, characters and patterns are printed on the surface of the display piece 5A in advance (not shown).

  Further, since the bottom piece 5B is connected to only the display piece 5A, the bottom piece 5B is elastically deformed so as to expand rearward with a connection portion with the display piece 5A as a fulcrum, and the case main body 2 is covered with the case cover 5. When the is attached, variations in the longitudinal direction of the case body 2 can be absorbed.

  The center-of-gravity position G of the lead case 1 with the case cover 5 attached before housing the lead lead is rearward of the middle (1/2) of the total length L of the lead case G in the longitudinal direction (from the bottom piece 5B of the case cover). The distance M <1 / 2L) to the center of gravity G is located closer to the display piece 5A than the middle (1/2) in the overall thickness direction of the replacement core case 1. Further, the bottom piece 5B has a planar shape with no step on the surface, and it is easy to maintain a stable state even when the bottom piece 5B is placed on a horizontal surface such as a desk or a display shelf with the surface of the bottom piece 5B facing down. Further, since the center of gravity position G of the replacement core case 1 to which the case cover 5 is attached is positioned on the display piece 5A side in the thickness direction with respect to the middle of the thickness direction of the entire replacement core case 1 from the desktop. When it falls accidentally, it becomes easy to fall from the display piece 5A side of the case cover, and due to the synergistic effect with the center of gravity in the longitudinal direction described above, breakage of the accommodated lead core can be suppressed at the time of dropping.

  In order to attach the case cover 5 to the case body 2, the case body 5 is inserted into the opening K 2 on the distal end side provided on the case cover 5 from the bottom wall surface 2 </ b> D side of the case body 2. By inserting the cover 5 until it comes into contact with the inner surface of the bottom piece 5B, the both side pieces 5C can be sandwiched and attached to the case body 2. At this time, an engagement hole (engagement portion) 2E provided in the case main body 2 and a projection (engaged portion) 5D provided on the inner surface of the display piece 5A and having a substantially hemispherical end are detachable. The case main body 2 is prevented from being inadvertently detached from the opening K2 of the case cover 5, such as vibration during movement and the weight of the case main body 2.

  Further, since the protrusion 5CA of the side piece 5C of the case cover 5 and the protrusion 5BA of the bottom piece 5B are provided on the front wall surface 2A side of the case main body 2, the case main body 2 is on the surface side of the case cover 5. It is suppressed from coming out of the opening K1. In order to allow the lid body 4 to be rotated while the case cover 5 is attached to the case body 2, the display piece 5A is provided with a notch 5E so that the operating portion of the lid body 5 protrudes to the outside. It is.

  In the present embodiment, the case main body 2 can be mounted also from the opening K1 on the surface side provided in the case cover 5. In order to attach the case main body 2 from the front surface side opening K1 provided in the case cover 5, the case main body 2 is inserted into the front surface side opening K1 provided in the case cover 5 from the back wall surface 2B side. The back wall surface 2B can be mounted by being inserted until it contacts the inner surface of the display piece 5A of the case cover 5. At this time, the distance P between the protrusions 5CA of the side piece 5C of the case cover 5 is smaller than the width Q of the case body 2, but the side piece 5C provided on the case cover can be elastically deformed into the display piece 5A. When the case main body 2 is mounted, the side piece 5C spreads outward, the case main body 2 can be inserted, and the two side pieces 5C sandwich the case main body 2 by returning to its original state by elastic deformation. Then, a part of the protrusion 5CA is located on the front wall surface 2A of the case main body 2, and the case cover 5 is attached to the case main body 2 while preventing the protrusion from the front-side opening K1 provided in the case cover 5. Can do. Further, when the case body 5 is inserted into the opening K1 on the front surface side from the back wall surface 2B side of the case body 2, the protrusion 5CA is provided so that the case body is easily located between the side pieces 5C of the case cover 5. It has a semicircular cross section that spreads outward.

  In order to remove the case cover 5 from the case main body 2, the case main body 2 can be taken out from the opening K <b> 2 on the tip end side provided in the case cover 5. At this time, since the front wall surface 2A of the case body 2 is exposed to the outside by the opening K1 on the surface side provided in the case cover 5, it is easy to slide the front wall surface 2A of the case body 2 with a finger. Can be removed. Further, the case body 2 can be easily detached from the opening K1 on the surface side provided in the case cover 5 by lifting the lid 4 protruding from the case cover 5 from the surface side of the display piece 5A to the opening K1 side. It is.

  Further, a non-contact portion 5F having a gap is provided between the inner surface of the display piece 5A of the case cover 5 and the surface of the back wall surface 2B of the case body 2. The non-contact portion 5F is provided with a recess at the center of the inner surface of the display piece 5A, so that the longitudinal direction is between the surface of the back wall surface 2B of the case body 2 and the inner surface of the display piece 5A of the case cover 5. A non-contact portion 5F is provided over the surface, and in this non-contact portion 5F, the surface of the back wall surface 2B of the case body 2 and the inner surface of the display piece 5A of the case cover 5 do not contact each other. Further, on the surface of the display piece 5 </ b> A of the case cover 5, a window portion (not shown) provided by a preprinted portion and a non-printing portion is provided, and the back wall surface 2 </ b> B of the case body 2 is attached to the case cover 5. It can be visually recognized from the outside via the display piece 5A.

  The display applied to the display piece is not limited to printing, and a sticker or a mirror may be attached. In addition, the contents of the display unit are not particularly limited, such as characters, symbols or figures such as product names, company names, illustrations, and names, or combinations thereof, or coloring of a single color or a plurality of colors.

  The case cover may be either transparent or opaque, but a window portion for visually recognizing the inside may be provided by not performing printing or the like on the display piece or performing display having internal visibility such as form transfer. Since it is possible, it is preferable to be transparent. Further, at least the front wall surface and the back wall surface of the case main body transmit light, and the stored replacement core can be visually recognized from the outside, and the light transmittance of the display surface is higher than the light transmittance of the rear surface of the case main body. By making it small or light opaque, deterioration of the lead core in the case main body due to light can be suppressed. In addition, by making the light transmittance of the back wall of the case body larger than the light transmittance of the front wall surface, the case cover is attached and the deterioration of the lead core in the case body due to light is suppressed, and the case cover is removed. Therefore, it is preferable because the remaining core can be easily visually confirmed.

  In this embodiment, the display piece of the case cover has a planar shape with no step on the surface, and the printability is improved. However, the internal visibility is improved by obtaining the lens effect with the display piece having a circular arc shape in cross section. It can also be removed and used as a magnifying glass.

  The opening provided in the case cover is not limited to the tip side and the surface side, and may be provided at one place on the tip side, the surface side, or the side surface side. However, it is preferable to have the openings at any two locations on the tip, the front side, and the side, since the detachability of the case cover is enhanced.

  In this embodiment, for convenience, the case body has a rectangular box shape, but is not particularly limited to a circular box shape, an elliptic box shape, or the like. Also. The bottom wall surface of the case body may be provided integrally with another wall surface, or may be provided separately by attaching a tail plug or the like.

  The structure of the lid body is not particularly limited, and the lid body may be detachably fitted to the case body, but, as in this embodiment, by making the lid body rotatable, It is preferable to extend the tip of the display piece to the tip of the case main body and the lid so that the case main body and the tip of the lid do not collide when dropped.

  Further, in the present embodiment, for convenience, an engagement hole (engagement portion) provided in the case main body and a protrusion (engaged portion) provided on the inner surface of the display piece with a substantially hemispherical end portion are provided. Removable engagement suppresses inadvertent removal of the case body from the opening of the case cover, such as vibration during movement and the weight of the case body. Further, it may be possible to suppress inadvertent disconnection due to overpass engagement.

  The replacement core case of the present invention is not limited to the types such as the core diameter and the core color accommodated in the case body, and can be widely used as a replacement core case.

DESCRIPTION OF SYMBOLS 1 Replacement core case 2 Case main body 2A Front wall surface 2B Back wall surface 2C Side wall surface 2D Bottom wall surface 2E Engagement hole (engagement part)
3 Lid fixing member 4 Lid 5 Case cover 5A Display piece 5B Bottom piece 5BA Protrusion 5C Side piece 5CA Protrusion 5D Protrusion (engaged portion)
5E Notch 5F Non-contact part K1, K2 Opening L Full length of lead core case M Distance from bottom piece of case cover to center of gravity P Distance between protrusions Q Case body width

Claims (8)

A case main body having at least a front wall surface, a back wall surface, and a bottom wall surface and capable of accommodating a replacement core therein; and a lid body for opening and closing a replacement core outlet provided at a distal end portion of the case main body. A case for the mechanical pencil, wherein the case cover is positioned at least on the surface side of the bottom wall surface of the case body, and protects the bottom wall surface. , Located on the surface side of the front wall surface or the back wall surface of the case body, opening the display piece that protects the front wall surface or the back wall surface, and the one side facing the bottom piece or the display piece, A replacement core case having an opening part into which the case body can be inserted and removed. The replacement core case according to claim 1, wherein the display piece has a planar shape or a circular arc shape with no step on the surface. The spare core case according to claim 1 or 2, wherein an area of a surface of the display piece is larger than an area of a surface of a front wall surface or a back wall surface of the case body. 4. The replacement according to claim 1, wherein the center of gravity of the replacement core case to which the case cover is attached is located on the rear side in the longitudinal direction from the middle of the total length of the replacement core case. Core case. 5. The replacement case according to claim 1, wherein the case cover is provided with the cover so that the replacement opening can be freely opened and closed. An engaging portion is provided on the outer surface of the case body, an engaged portion is provided on the inner surface of the display piece or the bottom piece, and the engaging portion and the engaged portion are inserted in the direction in which the case main body is inserted from the opening. 6. The extra lead case according to any one of claims 1 to 5, which is detachably engaged in a detaching direction. The bottom piece is connected to only the display piece, and the bottom piece is elastically deformed with a connection portion with the display piece as a fulcrum, and can be expanded rearward. The replacement core case according to any one of 6. The surface of the front or back wall surface of the case body and the inner surface of the display piece of the case cover are separated from at least a part of the surface of the front or back wall surface of the case body and the inner surface of the display piece of the case cover. The replacement core case according to claim 1, further comprising a non-contact portion.

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