CN116745140A - Replacement core box for propelling pencil - Google Patents

Abstract

The replacement core box for the mechanical pencil comprises: a case main body for accommodating a replacement core for a mechanical pencil; a cover member that is capable of opening and closing a replacement core take-out port of the cartridge body by sliding with respect to the cartridge body; and a locking member configured to switch between an engaged state in which the locking member is engaged with one of the cartridge body and the cover member and a non-engaged state in which the locking member is not engaged with the one of the cartridge body and the cover member, by moving the locking member relative to the cartridge body and the cover member in a crossing direction crossing a sliding direction of the cover member relative to the cartridge body, wherein the locking member is configured to maintain a state in which the replacement core extraction port is blocked and is not slidable relative to the cartridge body.

Description

Replacement lead box for mechanical pencil

Technical field

The present disclosure relates to a replacement core box for mechanical pencils.

Background technique

Conventionally, a refill box for a mechanical pencil has been known in which a main joint portion in which the box body and the lid member can relatively rotate in a fan-like manner is formed on the bottom portion of the box body as a rotation fulcrum, and a refill outlet of the box body is provided. In the opened opening state, the end of the refillable lead for mechanical pencils is exposed, and the refillable lead for mechanical pencils is taken out from there (Patent Document 1).

Prior technical documents

patent documents

Patent Document 1: Japanese Patent Application Publication No. 2020-157539

Contents of the invention

Invent the problem to be solved

Patent Document 1 discloses an operation of rotating the box body and the cover member in a fan shape relative to each other with one hand, so that the end of the refill lead for a mechanical pencil is exposed in an open state in which the refill outlet of the box body is opened. Then, take out the refill for the mechanical pencil by hand, and refill the refill for the mechanical pencil into the mechanical pencil.

Next, after replenishing the refills for the mechanical pencils into the mechanical pencils, the case body and the cover member are rotated relatively in a fan shape again so that the cover member is in a state of closing the refill outlet of the case body. At this time, by forming a protrusion on one of the cover member and the box body and forming a fitting portion of the protrusion on the other, the state in which the cover member closes the refill removal port is maintained. However, when the lid member is locked relative to the box body by the fitting of the protrusion and the fitting portion, it may be difficult to reliably maintain the state in which the lid member closes the refill removal port.

In view of the above circumstances, an object of at least one embodiment of the present invention is to provide a refill box for a mechanical pencil that can more reliably maintain a closed state of the refill outlet.

Solutions for solving problems

A replacement core box for a mechanical pencil according to at least one embodiment of the present invention includes:

The main body of the box is used to store replacement cores for mechanical pencils;

a cover member that can open and close the replacement core removal port of the box body by sliding relative to the box body; and

A locking member configured to switch between the box body and the cover member by moving relative to the box body and the cover member in an intersecting direction that intersects with a sliding direction of the cover member relative to the box body. An engaged state in which one of the cover members is engaged and a non-engaged state in which the one of the box body and the cover member is not engaged,

In the engaged state, the cover member is configured to maintain a state in which the refill outlet is blocked and in a state in which it cannot slide relative to the box body.

Invention effect

According to at least one embodiment of the present invention, there is provided a refill box for a mechanical pencil that can more reliably maintain a closed state of the refill outlet.

Description of drawings

FIG. 1 is a front view showing an engaged state of a locking member of a refill cartridge for a mechanical pencil according to one embodiment.

FIG. 2 is a front view showing a locking member of the refillable cartridge for mechanical pencil according to the embodiment in a non-engaged state.

3 is a front view showing a locking member of the refillable cartridge for mechanical pencil according to the embodiment in a non-engaged state.

4 is an exploded perspective view seen from the front side of the refill cartridge for mechanical pencils according to the embodiment.

5 is an exploded perspective view seen from the back side of the refill cartridge for mechanical pencils according to the embodiment.

FIG. 6 is a perspective view showing the refill cartridge for mechanical pencils shown in FIGS. 4 and 5 when the locking member is in an engaged state.

Fig. 7 is a cross-sectional view of the refill cartridge for the mechanical pencil shown in Fig. 6 .

FIG. 8 is a perspective view showing the refill cartridge for mechanical pencils shown in FIGS. 4 and 5 when the locking member is in a non-engaged state.

FIG. 9 is a cross-sectional view of the refill cartridge for the mechanical pencil shown in FIG. 8 .

FIG. 10 is a perspective view showing the refill cartridge for mechanical pencils shown in FIGS. 4 and 5 when the locking member is in a non-engaged state.

Fig. 11 is a cross-sectional view of the refill cartridge for a mechanical pencil shown in Fig. 10 .

FIG. 12 is an A-A cross-sectional view showing a state in which a plurality of refill cores are accommodated in FIG. 7 .

FIG. 13 is a perspective view similar to FIG. 10 , showing the refill cartridge in a state in which a plurality of refill cores are accommodated.

Detailed ways

Hereinafter, several embodiments of the present invention will be described with reference to the drawings. The dimensions, materials, shapes, relative arrangements, etc. of the components described in the embodiments or shown in the drawings are not intended to limit the scope of the present invention, but are merely illustrative examples.

1 to 3 are front views of a refill box for mechanical pencils according to one embodiment, respectively showing the locking member in the engaged state, the locking member in the non-engaged state, and the refill outlet being blocked. , and the figure when the locking member is in the non-engaged state and the replacement core removal port is in the open state.

4 and 5 are respectively exploded perspective views viewed from the front side and the back side of the refill cartridge for a mechanical pencil according to one embodiment. Figures 6, 8 and 10 are perspective views of the refill box for mechanical pencils shown in Figures 4 and 5, respectively showing the locking member in the engaged state, the locking member in the non-engaged state and the refill outlet. Figures showing the state when the locking member is in the blocked state, and when the locking member is in the non-engaging state and the replacement core removal port is in the open state. Figures 7, 9 and 11 are cross-sectional views of the replacement core box for mechanical pencils shown in Figures 6, 8 and 10 respectively. Fig. 12 is a cross-sectional view taken along line A-A in Fig. 7 . FIG. 13 is a perspective view similar to FIG. 10 , showing the refill cartridge in a state in which a plurality of refill cores are accommodated.

As shown in FIGS. 1 to 13 , a refill case 1 for mechanical pencils (hereinafter also referred to as a refill case) according to several embodiments includes a case body 2 , a lid member 4 , and a locking member 5 .

The case main body 2 is configured to accommodate the refill 3 for mechanical pencils (see FIGS. 3 to 5 , etc.). The box body 2 has a refill outlet 2a, which is an opening for loading and taking out the refill 3, and a bottom 2c, and extends between the refill outlet 2a and the bottom 2c. In the illustrated exemplary embodiment, the box body 2 extends along the length direction of the box body 2 between the refill removal opening 2a and the bottom 2c.

In addition, the distance in the longitudinal direction of the box body 2 from the inner bottom 2e (refer to FIG. 7 etc.) to the refill removal port 2a may be shorter than the length of the refill 3 accommodated in the box body 2. In this case, part of the refill 3 housed in the case body 2 is exposed from the case body 2 , so the refill 3 can be easily taken out of the case body 2 with the refill removal port 2 a open.

The cover member 4 is configured to be slidable relative to the box body 2 , and by sliding relative to the box body 2 , the refill core removal port 2 a of the box body 2 can be opened and closed. The open state of the refill removal port 2a refers to a state in which at least part of the refill removal port 2a is not covered by the cover member 4 and the refill 3 accommodated in the box body 2 is taken out with fingers. In addition, the state in which the refill outlet 2a is blocked means that the entire refill outlet 2a is covered by the cover member 4 and the refill 3 accommodated in the box body 2 cannot be taken out with fingers.

The lock member 5 is configured to move relative to the box body 2 and the cover member 4 in an intersecting direction that intersects with the sliding direction of the cover member 4 relative to the box body 2, thereby switching the lock member 5 to be engaged with one of the box body 2 and the cover member 4. An engaged state, and a non-engaged state in which one of the box body 2 and the cover member 4 is not engaged.

In the engaged state of the lock member 5 , the refill outlet 2 a is maintained in a state that is blocked by the cover member 4 , and the cover member 4 cannot slide relative to the box body 2 . On the other hand, in the non-engaged state of the locking member 5 , the cover member 4 can slide relative to the box body 2 , and the refill outlet 2 a can be opened or closed by sliding the cover 4 relative to the box body 2 .

In the illustrated exemplary embodiment, the cover member 4 is slidable in a second direction relative to the box body 2 and the locking member 5 is movable relative to the box body 2 in a first direction intersecting the second direction (see Figures 1 to 3, Figure 7, Figure 9 and Figure 11). The first direction is a direction connecting the refill core removal opening 2a and the bottom 2c of the box body 2, and may be the longitudinal direction of the box body 2. The second direction may be a direction orthogonal to the first direction or the width direction of the box body 2 .

In the above-described embodiment, the refill box 1 for mechanical pencils is provided with: the cover member 4 which can open and close the refill outlet 2a of the box body 2 by sliding relative to the box body 2; and the locking member 5 which It can be engaged with one of the box body 2 and the lid member 4 . Furthermore, by moving the locking member 5 in the cross direction, it is possible to switch between the state in which the locking member 5 is engaged with one of the box body 2 and the cover member 4 and the state in which the locking member 5 is not engaged with one of the box body 2 and the cover member 4 . The non-engaged state in which one of the parties is engaged.

Therefore, by engaging the locking member 5 with one of the box body 2 and the lid member 4 , the lid member 4 blocks the refill outlet 2 a and maintains a state in which the lid member 4 cannot slide (engagement). state), it is possible to more reliably maintain the closed state of the refill core removal port 2a. In addition, by moving the lock member 5 in the cross direction, it is possible to easily switch between the above-mentioned engaged state and the non-engaged state in which the cover member 4 can slide relative to the box body 2 .

In some embodiments, the locking member 5 has a direction extending in the intersecting direction (the first direction in the illustrated embodiment) from the other of the box body 2 and the cover member 4 (the locking member 5 is not engaged). The convex portion 5a protrudes in the direction of one of the box body 2 and the cover member 4 (the one on which the locking member 5 is engaged). In addition, one of the box main body 2 and the cover member 4 (the one with which the locking member 5 is engaged) has an engaging groove 4a into which the protruding portion 5a can be engaged. Furthermore, when the locking member 5 is in an engaged state, the protruding portion 5a is engaged with the engaging groove 4a, and when the locking member 5 is in a non-engaged state, the protruding portion 5a is not engaged with the engaging groove 4a. state. It should be noted that in the above-described engaged state, the protruding portion 5a may be inserted into the engaging groove 4a with a slight gap between the engaging groove 4a and the engaging groove 4a.

In the exemplary embodiment shown in FIGS. 1 to 3 and 4 to 13 , the locking member 5 has a direction extending from the box body 2 toward the cover member 4 in the above-mentioned intersecting direction (direction along the first direction). The convex portion 5a protrudes in the direction. In addition, the cover member 4 has an engaging groove 4a into which the protruding portion 5a of the locking member 5 can be engaged.

In the exemplary embodiment shown in FIGS. 1 to 3 , the locking member 5 including the protrusion 5 a is movably supported on the box body 2 along the groove 2 b extending in the cross direction. In addition, the cover member 4 is formed with an engaging groove 4 a which is recessed from the surface of the cover member 4 and extends in the intersecting direction. The convex portion 5a of the locking member 5 can be engaged with the engaging groove 4a provided in the cover member 4 .

In the exemplary embodiment shown in FIGS. 4 to 13 , the box body 2 includes a ventral wall portion 2 g and a dorsal wall portion 2 f extending respectively between the bottom 2 c of the box body 2 and the refill removal opening 2 a. and face each other; and a pair of side wall portions 2r and 2s, which connect the ventral wall portion 2g and the dorsal wall portion 2f. In addition, the locking member 5 includes a base portion 5b that faces the ventral wall portion 2g of the box body 2 and a pair of side plate portions 5d and 5c that face the pair of side wall portions 2r and 2s of the box body 2, respectively. Set. The side plate portion 5d of the pair of side plate portions 5d, 5c of the locking member 5 includes a convex portion 5a protruding from the base portion 5b in a direction from the bottom 2c of the box body 2 toward the refill outlet 2a.

In addition, in the exemplary embodiment shown in FIGS. 4 to 13 , the cover member 4 includes: an opening cover 4d that can cover the refill core removal opening 2a of the box body 2; and a back cover 4e that is connected to the box body 2. The back side wall portions 2f of 2 face each other. Furthermore, the engaging groove 4a is at least partially formed by the first side surface 4i of the protruding portion 4h protruding from the surface of the back side cover portion 4e facing the back side wall portion 2f (box main body 2). The first side surface 4i is a surface extending along the first direction. More specifically, the engaging groove 4a is formed at least partially by the above-mentioned first side surface 4i and the inner wall surface of the side wall portion 4j of the cover member 4.

That is, the convex portion 5a which is a part of the side plate portion 5d of the locking member 5 can be engaged with the engaging groove 4a formed by the first side surface 4i of the protruding portion 4h of the box body 2 and the inner wall surface of the side wall portion 4j.

According to the embodiment described above, the locking member 5 is provided with the protruding portion 5a, and the box body 2 or the cover member 4 (in the illustrated embodiment, the cover member 4) is provided with a protruding portion 5a that can engage with the protruding portion 5a of the locking member 5. The engaging groove 4a is closed. Therefore, by moving the locking member 5 in the cross direction, the protrusion 5a of the locking member 5 can be engaged with the engagement groove 4a of the box body 2 or the lid member 4, or the protrusion 5a can be released from the engagement groove 4a. Snap.

In the exemplary embodiment shown in FIGS. 4 to 13 , the box body 2 is embedded in the locking member 5 , and the cover member 4 is movable in the sliding direction along the second direction relative to the box body 2 and the locking member 5 .

It should be noted that, as shown in FIGS. 7 , 9 and 11 , in a state where the box body 2 is embedded and assembled in the locking member 5 , the box body 2 can slide along the length direction of the box body 2 relative to the locking member 5 . In addition, the position of the locking member 5 in the longitudinal direction of the box body 2 is determined by the relationship between the convex portions 2t, 2u, 2v, and 2w of the box body 2 protruding toward the locking member 5 in the width direction and the locking members protruding toward the width direction of the box body 2. The convex portions 5i and 5j of 5 are engaged and restricted.

That is, through the lower surfaces of the convex portions 2t and 2v of the box body 2 (surfaces on the bottom 2c side in the longitudinal direction of the box body 2) and the upper surfaces of the convex portions 5i and 5j of the locking member 5 (the surfaces in the longitudinal direction of the box body 2 The surface on the refill outlet 2a side of the cartridge abuts, thereby limiting the position of the locking member 5 closest to the refill outlet 2a side in the longitudinal direction of the box body 2 . In addition, the upper surface of the convex portions 2u and 2w of the box body 2 (the surface on the side of the refill outlet 2a in the longitudinal direction of the box body 2) and the lower surface of the convex portions 5i and 5j of the locking member 5 (the surface of the box body 2 The surface of the locking member 5 on the side of the bottom 2c in the longitudinal direction is in contact with the locking member 5 so that the position closest to the bottom 2c side of the locking member 5 in the longitudinal direction of the box body 2 is restricted.

In addition, the convex parts 5i and 5j of the locking member 5 move in the recessed parts 2z and 2m provided in the side wall parts 2r and 2s of the box main body 2, respectively. The recessed part 2z is provided in the area between the convex parts 2t and 2u in the longitudinal direction of the box main body 2, and the recessed part 2m is provided in the area between the convex parts 2v and 2w in the longitudinal direction of the box main body 2.

Therefore, in a state where the box main body 2 is fitted into the locking member 5, the box main body 2 and the locking member 5 can move integrally. It should be noted that the box body 2 is movable with the locking member 5 due to the engagement of the convex portion 5i and the recessed portion 2z at both sides of the box body 2 and the locking member 5 and the engagement of the convex portion 5j and the recessed portion 2m. Is integrated and prevents disassembly/falling off.

In the above-described embodiment, the locking member 5 is fitted into the box body 2, so that the cover member 4 can be easily slid relative to the box body 2 and the locking member 5 by operating it with one hand, for example.

In addition, in the illustrated embodiment, the back side wall portion 2f of the box main body 2 faces the plate-shaped back side cover portion 4e of the cover member 4. Therefore, by moving the box main body 2 along the back side cover portion 4e, it is possible to The cover member 4 is allowed to slide smoothly relative to the box body 2 (and the locking member 5).

In addition, in the illustrated embodiment, the fitting protrusion 2h protruding in the second direction toward the side plate portion 5c of the lock member 5 is formed on the side wall portion 2s of the box body 2, and on the side plate of the lock member 5 The portion 5c is formed with a fitting protrusion 5f protruding in the second direction toward the side wall portion 2s of the box body 2. In the engaged state of the lock member 5, the fitting protrusion 2h and the fitting protrusion 5f are fitted. This makes it easy to maintain the engaged state of the lock member 5 in a state where the opening and closing operation of the replacement core box 1 is not performed (that is, in a state where no force is applied to move the lock member 5 and the cover member 4 ).

In some embodiments, for example, as shown in FIGS. 4 to 13 , the replacement core box 1 is provided with a main convex portion 2 d provided on one of the box body 2 and the cover member 4 (shown in FIGS. 4 to 13 in the case of the box body 2); and a main recessed portion 4c provided on the other of the box body 2 and the cover member 4 (the cover member 4 in the examples shown in Figs. 4 to 13), and for The main convex portion 2d is engaged. Furthermore, the cover member 4 is movable relative to the box body 2 and the locking member 5 so as to rotate about the main convex portion 2d and the main recessed portion 4c. In the exemplary embodiment shown in FIGS. 4 to 13 , the main recessed portion 4 c is a hole provided in the cover member 4 .

In the above-described embodiment, the cover member 4 is movable relative to the box body 2 and the locking member 5 so as to rotate about the main convex portion 2d and the main recessed portion 4c. Therefore, the cover member can be moved by, for example, one-handed operation. 4 is easy to slide relative to the box body 2 and the locking member 5.

It should be noted that in this embodiment, the sliding direction of the cover member 4 relative to the box body 2 is the same as the rotation direction of the cover member 4 centered on the main convex portion 2d and the main recessed portion 4c, and the cover member 4 is in an arc shape. move on the track. In addition, this sliding direction (rotation direction) is a direction along the 2nd direction (the direction along the width direction of the box main body 2).

In some embodiments, for example, as shown in FIGS. 1 to 13 , one of the box body 2 and the cover member 4 that is engaged with the locking member 5 includes a movement restriction portion 4 b for restricting non-jamming. Movement of the locking member 5 in the closed state in the intersecting direction (direction along the second direction) from the other of the box body 2 and the lid member 4 toward the one.

In the exemplary embodiment shown in FIGS. 1 to 13 , the cover member 4 includes the above-mentioned movement restriction portion 4 b , which is configured to restrict the movement of the locking member 5 in the non-engaged state in the intersecting direction (along the third direction). movement in two directions) from the box body 2 toward the cover member 4 .

In the above-described embodiment, the movement restricting portion 4 b for restricting the movement of the locking member 5 in the intersecting direction in the unengaged state is provided, so that the locking member 5 in the unengaged state can be prevented from moving in the intersecting direction. Therefore, it is possible to suppress obstruction of the sliding movement of the cover member 4 relative to the box body 2 due to unintentional movement of the lock member 5 in the cross direction.

In the exemplary embodiment shown in FIGS. 1 to 13 , the movement restriction portion 4 b has an abutment surface 4 l extending along the sliding direction and capable of providing a convex portion of the locking member 5 in the non-engaged state. The front end surface 5h of 5a is in contact.

In this case, the front end surface 5h of the convex portion 5a of the locking member 5 comes into contact with the contact surface 41 of the movement restricting portion 4b, so that the intersecting direction of the locking member 5 in the non-engaged state (along the second direction) direction) movement is restricted.

In the exemplary embodiment shown in FIGS. 4 to 13 , the abutment surface 41 of the movement restriction portion 4 b includes the second side surface 4 k of the protruding portion 4 h of the back side cover portion 4 e.

According to the above-described embodiment, with the simple structure of providing the above-mentioned protruding portion 4h on the cover member 4, the first side surface 4i of the protruding portion 4h can be used to form the engaging groove 4a. In addition, the protruding portion can be used to form the engaging groove 4a. The second side surface 4k of the portion 4h forms the contact surface 4l of the movement restriction portion 4b.

In the exemplary embodiment shown in FIGS. 4 to 13 , the above-mentioned second side surface 4k has an arc shape. Therefore, in the non-engaged state, the intersecting direction (the direction along the second direction) of the locking member 5 that rotates together with the box body 2 with respect to the cover member 4 about the main convex portion 2d and the main recessed portion 4c can be appropriately restricted. ) movement.

In some embodiments, for example, as shown in FIG. 12 , the replacement core box 1 is provided with ribs 2 p protruding from the inner wall surface 2 q of the box body 2 and extending along the first direction (the longitudinal direction of the box body 2 ).

According to the above-described embodiment, the rib 2p protrudes from the inner wall surface 2q of the box body 2 and extends in the first direction (the direction connecting the refill removal port 2a and the bottom 2c). Therefore, the rib 2p can be accommodated in the box body 2 The plurality of refills 3 for mechanical pencils are separated by ribs 2p and divided into groups of a smaller number of refills 3. Therefore, as shown in FIG. 13 , in a state where the refill outlet 2 a of the box body 2 is opened, a smaller number of refills 3 can be easily taken out.

In addition, by appropriately setting the installation position of the rib 2p (for example, the distance between the side wall part 2s and the rib 2p), the number of the refillable cores 3 sorted can be adjusted. For example, by setting the distance between the side wall portion 2s and the rib 2p to be more than one time and less than twice the thickness of one refill core 3, it is easier to sort out only one refill core.

In some embodiments, for example, as shown in FIGS. 1 to 13 , the refill box 1 for mechanical pencils is composed of only three parts, including the box body 2 , the cover member 4 , and a component structure including the locking member 5 .

In this case, the above-mentioned refill box for mechanical pencils is configured with a smaller number of parts, so it is possible to suppress an increase in the production cost, maintain the closed state of the refill outlet more reliably, and achieve a possible The locking member 5 is configured to easily switch between the engaged state and the non-engaged state.

Hereinafter, the refill cartridges for mechanical pencils according to several embodiments will be described in more detail.

A refill box for mechanical pencils according to some embodiments of the present invention is composed of at least a bottomed cylindrical box body that accommodates refill leads for mechanical pencils, and a cover member capable of sealing the refill lead removal port of the box body. A locking mechanism is formed on at least one of the box main bodies. The locking mechanism is operated to move to a position where it enters the engaging groove (lockhole portion) of the other side and comes into contact, thereby restricting the relative sliding of the box main body and the cover member, thereby maintaining the box. The closed state of the subject. In addition, a locking mechanism locking unit is provided in which the locking mechanism is in an unlocked state when the refilling lead for mechanical pencil is exposed when the refilling lead outlet is opened.

The shape of the box body and the lid member is preferably a flat box shape so that they can be opened and closed by sliding and easily operated by fingers, but this does not impair the advantages of the present invention such as convenience of operation and ease of production. Within the range, it can also be a cylindrical type, an elliptical cylindrical type, a triangular box type with a cross section, a quadrilateral box type with a cross section, or a polygonal box type with a cross section.

The sliding movement of the box body and the lid member in conjunction with the opening and closing operation may also be a linear parallel movement of the box body and the lid member, a meandering movement, a fan-like structure with the main coupling part as the center of rotation, a double cylinder, or other rotating thread movement. .

In the case of fan-shaped sliding with the main coupling portion as the center of rotation, the main coupling portion that serves as a fulcrum for fan-shaped rotation of the box body and the lid member can be provided on one of the box body and the lid member. A convex part is formed and a recessed part or a hole into which the convex part is inserted is formed in the other side, or a buttonhole member is fitted into the recessed part or a hole formed in both.

The box body is formed with a refill outlet at a distance from the inner bottom of the box body that is shorter than the total length of the accommodated refills for mechanical pencils. When the refill outlet is open, the end of the refills for mechanical pencils is exposed. .

The shape of the opening edge of the refillable core removal port is suitably a rectangular shape, a circular shape, an elliptical shape, a triangular shape, a quadrangular shape, other polygonal shapes, etc., and therefore may be a shape different from the outer shape of the box body.

The cover member has a back side cover portion (sliding back plate portion) with a flat inner surface between a sliding surface that slides relatively between the cartridge body and an opening cover portion (lid portion) covering the refill removal port.

The surface of the box main body that faces the back cover portion of the cover member is also formed as a slidable back wall portion (back plane portion). Its shape is a flat surface, but it suffices as long as the box body and the cover member slide relative to each other. For example, it may be a flat surface with corrugated plate-like or grid-like unevenness by forming a gap between the two. The shapes of each other can be set as a concave-convex relationship along a straight line or a fan-shaped rotation track. However, it can be said that in terms of manufacturing and driving, it is advantageous to have smooth surfaces with each other.

By forming a protrusion on one of the cover member and the box body and forming a fitting portion of the protrusion on the other side, it is possible to provide a mechanism that maintains the state in which the cover member closes the refill removal port. In addition, regardless of the concave and convex fitting, the frictional resistance of the opposing sliding surfaces can be adjusted to maintain the operating position of the cover member.

Alternatively, a component structure such as an elastic member, a piston, and a damper can be used between the lid member and the box body to control the relative movement.

By arranging the locking member on the box body so as to slide along the box body, and having a part of the locking member inserted and removed from the engaging groove (keyhole portion) of the cover member, it is possible to switch the locking state between the locked state and the unlocked state. The entire dimensional change of the refill box for mechanical pencils can be configured so that the locked state and/or the unlocked state can be easily visually confirmed.

Furthermore, in conjunction with an operation such as sliding the locking member relative to the box body, a display indicating a locked state can be made such that a part of the box body is exposed. It should be noted that the display part may be characters or logos, or may be a part of the exposed surface that is cut out, a window is provided, etc. to expose the contents of the mechanical pencil refill, and is not particularly limited as long as the changed state can be recognized. In addition, the display content may be directly provided with unevenness on the component, or the roughness of the surface of the display part may be appropriately changed, or colored characters and logos may be displayed by transfer, painting, or the like.

The refillable lead box for mechanical pencils according to some embodiments of the present invention is provided with a locking mechanism locking unit, so that in a state where the refillable lead for mechanical pencils is exposed when the refillable lead outlet is opened, erroneous operation of the locking operation can be prevented (unauthorized operation is prohibited). the driving of the locking member in the locked state).

Furthermore, prohibiting the driving of the locking member in the unlocked state means preventing the locking member from hindering the operation of closing the lid member and the case body (a state in which the refill lead for mechanical pencils is not exposed), thereby suppressing unnecessary use of the locking member. Damage caused by collision of components, etc.

The lock mechanism locking unit may have a movement restriction part (lock prevention wall) formed on the cover member, and the lock member may contact the movement restriction part (lock prevention wall) without being driven as a lock mechanism, or may be configured with the lid member and the box body. The force of the rack-pinion gear or worm gear is rotated in conjunction with the sliding motion, or the locking member is maintained in an unlocked state by a linkage mechanism such as the legs of a folding machine, as long as it can prevent incorrect operation of the locking operation (unauthorized operation is prohibited). The mechanism for driving the locking member in the locked state is sufficient.

In order to form the movement restriction part (lock prevention wall) over the entire range where the locking mechanism is located, the movement range of one of the cover member and the box body where the locking member is disposed can be restricted. For example, barrier ribs may be provided on both sides to limit the maximum opening amount of the lid member or the box body.

As the material constituting the box main body, the lid member and the locking member, acrylonitrile styrene copolymer resin (AS resin), acrylonitrile butadiene styrene copolymer resin (ABS resin), polycarbonate resin (PC resin), polycarbonate resin, polycarbonate resin, etc. can be used. Styrene resin (PS resin), polyoxymethylene (polyacetal) resin (POM resin), polybutylene terephthalate resin (PBT resin), polypropylene resin (PP resin), polyparaphenylene Various synthetic resins such as ethylene glycol diformate resin (PET resin).

In addition, when the box body, the cover member, and the locking member are made of the same material, sliding failure may occur due to high affinity and adhesion between the materials. Therefore, it is preferable to make the two members of different materials. Or apply lubricants such as silicone oil and grease between the two. Furthermore, the case main body is preferably made of a highly transparent resin such as acrylonitrile styrene copolymer resin (AS resin) so that the stored refillable lead for mechanical pencils can be observed.

In addition, it may be colored in a transparent color or a translucent color, and can be appropriately selected according to the use. In addition, metal can also be used to show a sense of luxury, and the material is not particularly limited. Alternatively, the exterior surface can be made into a glossy surface or a wrinkled surface, or decoration such as printing can be applied.

A description will be given of a refill cartridge for a mechanical pencil according to one embodiment shown in FIGS. 1 to 3 . It should be noted that FIGS. 1 to 3 only show the operation of the refill cartridge 1 for mechanical pencils, and therefore the mechanism, locking structure, etc. required for sliding are omitted.

Hereinafter, the side of the cartridge main body 2 with the refill outlet 2a will be called the upper direction, the bottom side will be called the bottom direction, the front side will be called the front direction, the back side will be called the back direction, and the side side will be called the lateral direction.

As shown in FIG. 1 , the refillable lead box 1 for mechanical pencils has: a box-shaped bottomed cylindrical box body 2 that accommodates refillable leads for mechanical pencils; and a box-shaped lid member 4 that allows the box body 2 to be replaced. The core removal port 2a is sealed; and a male locking member 5 performs a locking operation.

Along the groove 2b of the box body 2, the locking member 5 can slide sideways in the upward direction and the bottom direction. In addition, the box body 2 can slide laterally relative to the cover member 4 so as to expose the refill removal opening of the box body 2 by sliding.

What is shown in FIG. 1 is a state (engaged state) in which the protruding portion 5a of the locking member 5 is fitted into the engaging groove (keyhole portion) 4a of the cover member 4, and the box body 2 is engaged with the protruding portion 5a of the locking member 5. It becomes a state in which it cannot slide laterally relative to the cover member 4 (locked state).

As shown in FIG. 2 , the locking member 5 is slid in the bottom direction along the groove 2b of the box body 2 and the convex portion 5a of the locking member 5 is pulled out from the engaging groove (keyhole portion) 4a of the cover member 4, thereby locking. The state is released (non-engaged state), the box main body 2 and the cover member 4 can relatively slide laterally, the refill outlet 2a of the box main body 2 is in an open state, the refill 3 for mechanical pencils is exposed, and the refill for mechanical pencils is taken out Core 3 (see Figure 3). At this time, the movement restriction portion (lock prevention wall) 4b of the cover member 4 is located above the convex portion 5a of the lock member 5. Therefore, the upward movement of the lock member 5 is restricted and cannot be moved. Therefore, erroneous operation of the lock operation can be prevented. (Maintain unlocked status).

A description will be given of a refill cartridge for a mechanical pencil according to one embodiment shown in FIGS. 4 to 11 . Hereinafter, the side of the cartridge main body 2 with the refill outlet 2a will be called the upper direction, the side with the bottom 2c will be called the bottom direction, the front side will be called the front direction, and the back side will be called the back direction.

As shown in FIG. 4 , which is an exploded perspective view of the embodiment, and FIG. 5 , which is an exploded perspective view viewed from the back of FIG. 4 , the refill box 1 for mechanical pencils has a flat box-shaped bottomed cylindrical box body 2 , It accommodates a refill 3 for mechanical pencils; a flat box-shaped cover member 4; and a locking member 5, which performs a locking operation.

The main convex part 2d of the box body 2 and the main recessed part (main coupling hole) 4c of the cover member 4 are respectively formed in the bottom direction part of the refill box 1 for mechanical pencils. By inserting and fitting the main convex part 2d into the main recessed part ( The main coupling hole) 4c becomes the main coupling portion, so that the box main body 2 and the cover member 4 can relatively rotate in a fan shape around this portion.

In addition, the locking member 5 has a flat base portion 5b, side plate portions (side wall portions) 5c, 5d, and a bottom wall portion 5e, and is covered and embedded in the box body 2 by the side plate portions (side wall portions) 5c, 5d on both sides. The outer side is slidable relative to the box body 2 in the upward direction and the bottom direction.

The bottom 2 c of the box body 2 is provided with a groove 2 x along the width direction of the box body 2 . Thereby, when the main convex part 2d of the box main body 2 is inserted into the main recessed part 4c of the cover member 4, the box main body 2 can bend, and damage of the box main body 2 can be suppressed.

In addition, the main convex portion 2d of the box main body 2 includes a chamfered portion 2dd in which the thickness of the main convex portion 2d changes in a cone shape. Furthermore, the cover member 4 is provided with a groove 4m recessed from the inner surface of the cover member 4 around the main recessed portion 4c. Therefore, the main convex part 2d of the box main body 2 can be inserted smoothly into the main recessed part 4c of the cover member 4.

The box body 2 has a rectangular refill outlet 2a at a position shorter than the entire length of the contained refill 3 for mechanical pencils from the inner bottom 2e of the box body 2. In the open state, the refill 3 for mechanical pencils is The ends are exposed.

It is also possible to adjust the length of the end of the exposed mechanical pencil refill 3 by adjusting the distance between the refill outlet 2a and the inner bottom 2e of the box body 2. However, in order to visually grasp the required number of refills with your fingertips, use The required exposed length of the end of the refill 3 for mechanical pencils is preferably 1.8 mm or more and 12 mm or less.

By locating the refill removal opening 2a and the inner bottom 2e in parallel positions with the same shape, the exposed lengths of the end portions of the refills 3 for mechanical pencils housed in the case body 2 can be aligned. However, in order to facilitate the removal of one or a small number of refills, In the refillable lead 3 for a mechanical pencil, the inner bottom 2e may be arranged non-parallel such as being inclined with respect to the refill outlet 2a.

When a large number (20 or more) of built-in refillable leads 3 for mechanical pencils are accommodated in the box main body 2 by forming ribs or the like in the box main body 2, the number of refillable leads 3 for mechanical pencils can be located in different areas within the container, or the exposed ones can be placed. The number of refillable cores 3 for mechanical pencils is set to a specific small number (1 to 5).

The lid member 4 has an opening cover portion (lid portion) 4d that covers the replacement core removal opening 2a, and a main recessed portion (main coupling hole) 4c that becomes the main coupling portion with respect to the box body 2 and a portion between the two portions. The inner surface is a planar back side cover portion (sliding back plate portion) 4e facing the back side wall portion (back plane portion) 2f of the box body 2 .

6 and 7 show a state in which the relative movement of the box body 2 and the cover member 4 is locked.

The locking member 5 is disposed so as to cover the ventral wall portion (abdomen) 2g on the opposite side to the dorsal wall portion (back plane portion) 2f of the box body 2. By sliding the locking member 5 relative to the cover member 4, the rear side can be switched. The locked status and unlocked status mentioned above.

By sliding the locking member 5 relative to the cover member 4, the convex portion 5a of the locking member 5 is inserted into the engaging groove (keyhole portion) 4a of the cover member 4 (engaged state), so that the box body 2 and the cover are connected. The member 4 cannot move relatively. At this time, the locking state can be maintained by fitting the fitting protrusions 2h formed on the box body 2 and the fitting protrusions 5f formed on the locking member 5 .

8 and 9 show a state in which the lock between the box body 2 and the cover member 4 is released.

By sliding the locking member 5 in the bottom direction relative to the box body 2, the convex portion 5a of the locking member 5 is pulled out from the engagement groove (keyhole portion) 4a of the cover member 4, so that the box body 2 and the cover member 4 can be connected. The state of relative movement (unlocked state). The mechanical pencil moves the locking member 5 in the bottom direction relative to the box body 2 so as to cover the abdominal wall portion (abdomen) 2g opposite to the back wall portion (back plane portion) 2f of the box body 2 The entire length of the core box 1 becomes longer with the replacement core box, so the unlocked state can be visually confirmed. In the unlocked state, the fitting protrusion 2h formed on the box body 2 is fitted with the fitting protrusion 5f formed on the locking member 5, so that the unlocked state can be maintained.

In addition, when the above-mentioned locking member 5 is slid in the bottom direction relative to the box body 2 in order to bring it into the unlocked state, the upper side of the abdominal side wall portion (abdomen) 2g of the box body 2 is exposed, and the exposed abdominal side wall The portion (abdomen) 2g forms a display portion 2i indicating the unlocked state and displays the unlocked state.

In the locked state, the core protrusion prevention wall 5g protrudes upward from the replacement core removal port 2a. Therefore, in the unlocking state, with the operation of sliding the locking member 5 in the bottom direction relative to the box body 2, in the unlocked state, The core protrusion prevention wall 5g of the locking member 5 is also lowered to a position substantially the same as or below the top 2j of the box body 2 in conjunction with the core protrusion prevention wall 5g.

In addition, in the locked state, the core protrusion prevention wall 5g protrudes upward from the refill outlet 2a, thereby functioning as a baffle to prevent foreign matter from entering from the hole on the side of the refill box 1 for mechanical pencils, and in the unlocked state, In the open state, when the refillable lead 3 for mechanical pencils is directly pinched and taken out from the refill outlet 2a with fingers, the refillable lead 3 for mechanical pencils will not be hindered by the core protrusion prevention wall 5g. Remove core 3. In addition, the core protrusion prevention wall 5g may be formed on the box main body 2 side.

10 and 11 show a state in which the refill core removal port 2a of the cartridge body 2 is open.

By rotating the box main body 2 and the cover member 4 in a fan shape relative to the box main body 2, the refill lead removal port 2a of the box main body 2 becomes open, and the refill lead 3 for mechanical pencils is exposed, so that the refill lead 3 for mechanical pencils can be taken out. At this time, since the movement restriction portion (lock prevention wall) 4b of the cover member 4 is disposed above the lock member 5, the upward movement of the lock member 5 is restricted, and the unlocked state is maintained to prevent erroneous operation of the lock member 5.

The movement restriction portion (lock prevention wall) 4 b is formed in a range that restricts upward movement of the lock member 5 during the opening operation of the box body 2 .

In addition, when the box main body 2 and the cover member 4 are rotated in a fan shape relative to the box main body 2, the opening restriction wall 2k of the box main body 2 comes into contact with the opening restriction rib 4f of the cover member 4, so that the locking member 5 moves together with the box main body 2. The movement range of the convex portion 5a can be limited within the formation range of the movement restriction portion (lock prevention wall) 4b disposed above the convex portion 5a. Therefore, the locking member 5 cannot move upward, and locking can be prevented more reliably. Misoperation of operation (maintaining non-locked status). As shown in FIG. 5 , the opening restricting wall 2k may be formed from the inner surface of the recessed portion 2o recessed from the surface of the back side wall portion 2f.

After the refill 3 for mechanical pencils is replenished into the mechanical pencil, the box body 2 and the lid member 4 are rotated in a fan shape relative to each other to close the refill outlet 2 a and slide the locking member 5 upward relative to the box body 2 operation, the locking state is again maintained in which the replacement core removal port 2a is closed. At this time, the entire length of the refill box for mechanical pencils 1 is restored by sliding the locking member 5 upward relative to the box main body 2 , so that the locked state can be easily visually confirmed.

As shown in FIG. 4 , the abdominal wall portion 2g of the box body 2 may have a step portion 2l at the end on the side of the refill outlet 2a, and the step portion 2l has a surface that is recessed compared to the surface of the abdominal wall portion 2g. . In this case, even if the opening cover portion 4d of the cover member 4 is deformed and narrowed after being formed, the gap between the opening cover portion 4d and the box body 2 can be easily maintained. Therefore, it is easy to slide the cover member 4 smoothly relative to the box body 2 .

As shown in FIG. 5 , the back side wall portion 2f of the box main body 2 may have a recessed portion 2n recessed from the surface of the back side wall portion 2f. The recessed portion 2n may extend over the entire range of 1/2 or more of the length of the box body 2 in the longitudinal direction of the box body 2 .

If the sliding operation of the cover member 4 relative to the box body 2 is repeated, scratches may occur on the surface of the back side wall portion 2f of the box body 2 and the inner surface of the back side cover portion 4e of the cover member 4. In this regard, by providing the above-described recessed portion 2n, the contact area between the back side wall portion 2f and the back side cover portion 4e can be reduced, thereby suppressing the occurrence of the above-mentioned scratches.

As shown in FIG. 4 , the box main body 2 may have a thinned portion 2y provided so as to be recessed from the ventral wall portion 2g or the dorsal wall portion 2f. The thinned portion 2y may be provided at a position different from the portion accommodating the refill core 3 in the longitudinal direction of the box body 2. In the example shown in FIG. 4 , the thinned portion 2y is provided closer to the bottom 2c than the inner bottom 2e (see FIG. 7 ) in the longitudinal direction of the box body 2 . By providing such a thinned portion 2y, when the box body 2 is molded, the wall thickness of materials such as resin can be easily made uniform, and shrinkage can be easily prevented.

As shown in FIG. 5 , the base portion 5b of the locking member 5 may have a step portion 5k having a surface recessed from the inner surface of the base portion 5b. By providing the step portion 5k, the thickness of the base portion 5b of the locking member 5 becomes thinner, so it is easier to increase the thickness of the box body 2. This makes it possible to increase the cross-sectional area of the housing portion of the cartridge body 2 for the refill cartridge 3 , making it easier to place the cartridge body 3 into the cartridge body 2 . Therefore, when the refill core box 1 is produced, the occurrence of defects when the refill core 3 is placed in the box body 2 can be suppressed.

The contents described in each of the above embodiments can be understood as follows, for example.

(1) The refill cartridge (1) for a mechanical pencil according to at least one embodiment of the present invention is provided with:

The main body of the box (2) is used to store the replacement core for the mechanical pencil (3);

A cover member (4) capable of opening and closing the replacement core removal opening (2a) of the box body by sliding relative to the box body; and

A locking member (5) is configured to switch the locking member to the box by moving relative to the box body and the cover member in an intersecting direction that intersects with the sliding direction of the cover member relative to the box body. an engaged state in which one of the main body and the lid member is engaged, and a non-engaged state in which the one of the box main body and the lid member is not engaged,

In the engaged state, the cover member is configured to maintain a state in which the refill outlet is blocked and in a state in which it cannot slide relative to the box body.

According to the structure of (1) above, the refill box for mechanical pencils is provided with: a lid member that can open and close the refill outlet of the box body by sliding relative to the box body; and a locking member that can engage with the box body and the box body. One of the cover members is engaged. Furthermore, by moving the locking member in the intersecting direction, it is possible to switch between an engaged state in which the locking member is engaged with one of the box body and the cover member, and a state in which the locking member is not engaged with the one of the box body and the cover member. Non-engaged state.

Therefore, by engaging the locking member with one of the box body and the lid member, it is possible to achieve a state (engaged state) in which the lid member blocks the refill cartridge removal port and maintains a state in which the lid member cannot slide. Therefore, it is possible to achieve more The replacement core removal port is reliably maintained in a closed state. In addition, by moving the locking member in the cross direction, it is possible to easily switch between the above-mentioned engaged state and the non-engaged state in which the cover member can slide relative to the box body.

(2) In several embodiments, based on the structure of (1) above,

The one of the box main body and the cover member includes a movement restriction portion (4b) for restricting the movement of the locking member in the intersecting direction in the non-engaged state. move.

According to the structure of the above (2), the movement restricting portion for restricting the movement of the locking member in the intersecting direction in the non-engaged state is provided, so that the locking member in the non-engaging state can be prevented from moving in the intersecting direction. Therefore, it is possible to suppress obstruction of the sliding movement of the cover member relative to the box body due to unintended movement of the lock member in the cross direction.

(3) In several embodiments, based on the structure of (1) or (2) above,

The locking member has a convex portion (5a) protruding in a direction from the other of the box body and the cover member toward the one in the intersecting direction,

The one of the box body and the lid member has an engaging groove (4a) into which the protruding portion can engage,

The engaged state is a state in which the protruding portion is engaged with the engaging groove, and the non-engaged state is a state in which the protruding portion is not engaged with the engaging groove. The engaged state may be a state in which the protruding portion is inserted into the engaging groove with a slight gap between the protruding portion and the engaging groove.

According to the structure of the above (3), the locking member is provided with the protruding portion, and the box body or the cover member is provided with the engaging groove capable of engaging with the protruding portion of the locking member. Therefore, by moving the locking member in the cross direction, the protrusion of the locking member can be engaged with the engagement groove of the box body or the lid member, or the protrusion can be disengaged from the engagement groove. Thereby, as described in (1) above, it is possible to more reliably maintain the closed state of the refill cartridge removal port, and to easily switch the engaged state and the non-engaged state of the lock member.

(4) In several embodiments, based on the structure of (3) above,

The one of the box main body and the cover member includes a movement restriction portion (4b) for restricting the movement of the locking member in the intersecting direction in the non-engaged state. move,

The movement restriction portion includes a contact surface (4l) extending along the sliding direction and capable of being contacted by the front end surface (5h) of the convex portion in the non-engaged state. .

According to the structure of (4) above, the movement restricting portion has a surface (abutting surface) extending along the sliding direction of the cover member relative to the box body, and the front end surface of the convex portion of the locking member can abut against the abutting surface. Therefore, when the convex portion comes into contact with the abutting surface, it is possible to prevent the locking member from moving in the intersecting direction in the non-engaged state, and the abutting surface can guide the movement of the cover member in the sliding direction with respect to the box body.

(5) In several embodiments, based on the structure of (3) or (4) above,

The cover member has the engaging groove capable of engaging the convex portion of the locking member,

The box body includes:

A ventral wall portion (2g) and a dorsal wall portion (2f) respectively extend between the bottom (2c) of the box body and the refill core removal opening and are opposite to each other; and

a pair of side wall portions (2r, 2s) connecting the ventral wall portion and the dorsal wall portion,

The locking member includes:

a base (5b) opposite the ventral wall of the box body; and

a pair of side plate parts (5c, 5d), which are respectively opposed to the pair of side wall parts of the box body,

One (5d) of the pair of side plate parts includes the convex part protruding from the base part in a direction from the bottom part toward the refill core removal port.

According to the structure of the above (5), a simple structure in which a convex portion protruding from the base is provided on the side plate portion of the locking member facing one of the pair of side wall portions of the box body is as described in the above (3). By moving the locking member in the cross direction, the protrusion of the locking member can be engaged with the engagement groove of the box body or the cover member or the protrusion can be disengaged from the engagement groove.

(6) In several embodiments, based on the structure of (5) above,

The cover member includes:

an opening cover (4d) capable of covering the replacement core removal opening; and

a back side cover part (4e), which is opposite to the back side wall part of the box body,

The engaging groove is at least partially formed by a first side surface (4i) of a protruding portion (4h) protruding from a surface of the back side cover portion opposite to the back side wall portion.

According to the structure of the above (6), with a simple structure in which the cover member is provided with the protruding portion protruding from the surface of the back side cover portion, the engaging groove can be formed using the first side surface of the protruding portion.

(7) In several embodiments, based on the structure of (6) above,

The cover member includes a movement restriction portion (4b) for restricting movement of the locking member in the intersecting direction in the non-engaged state,

The movement restriction portion has a contact surface (4l) extending along the sliding direction and capable of being contacted by the front end surface (5h) of the convex portion in the non-engaged state. ,

The abutment surface includes a second side (4k) of the protrusion of the back side cover.

According to the structure of the above (7), with a simple structure in which the above-mentioned protruding part is provided on the cover member, the engaging groove can be formed using the first side surface of the protruding part. In addition, the engaging groove can be formed using the second side surface of the protruding part. The contact surface of the movement restriction part.

(8) In several embodiments, based on the structure of any one of the above (1) to (7),

The box body is embedded in the locking member,

The cover member is movable in the sliding direction relative to the box body and the locking member.

According to the structure of the above (8), since the locking member is fitted into the box body, the cover member can be easily slid relative to the box body and the locking member by operation with one hand, for example.

(9) In several embodiments, based on the structure of (8) above,

The replacement core box for mechanical pencils has:

a main convex portion (2d) provided on one of the box body and the lid member; and

A main recessed portion (4c) is provided on the other of the box body and the cover member and is engaged by the main convex portion,

The cover member is movable relative to the box body and the locking member so as to be pivotable about the main convex portion and the main recessed portion.

According to the structure of the above (9), the lid member can move relative to the box body and the locking member so as to rotate around the main concave portion and the main convex portion. Therefore, for example, the lid member can be moved relative to the box by operation with one hand. The main body and locking member slide easily.

(10) In several embodiments, on the basis of any one of the structures (1) to (9) above,

The box body has the replacement core removal opening and the bottom respectively provided at both ends of the box body in the first direction,

The refill box for mechanical pencils is provided with a rib (2p) protruding from an inner wall surface (2q) of the box body and extending along the first direction.

According to the structure of (10) above, the ribs protruding from the inner wall surface of the box body and extending in the first direction (that is, the direction connecting the refill removal port and the bottom) are provided. Therefore, multiple items accommodated in the box body can be separated by the ribs. The mechanical pencils are divided into groups of smaller numbers of refills by using refills. Therefore, it is easy to take out a small number of refill cores in a state where the refill core removal opening of the box body is opened.

(11) A refill box for mechanical pencils according to at least one embodiment of the present invention is composed of at least a bottomed cylindrical box body that accommodates refill leads for mechanical pencils, and a lid member capable of sealing a refill outlet,

The box body forms a refill outlet at a position where the distance from the inner bottom of the box body to the refill outlet is shorter than the total length of the accommodated refills for mechanical pencils. In the open state, the end of the refills for mechanical pencils is exposed.

The cover member has a back cover portion (sliding back plate portion) with a flat inner surface, and

A slidable back wall portion (back plane portion) is formed on the surface of the box body facing the back cover portion (sliding back plate portion) of the lid member,

The refillable core can be inserted by relatively sliding the outer surface of the outer surface of the back cover portion (sliding back plate portion) of the cover member with the outer surface of the back side wall portion (back plane portion) of the box body opposite to the back side wall portion (back plane portion). Take out the opening and closing of the outlet,

in,

A locking mechanism is formed on at least one of the cover member and the box main body. The locking mechanism is operated to move into a position where it enters the engaging groove (keyhole portion) of the other side and comes into contact, thereby restricting the relative sliding of the box main body and the cover member. , to maintain the sealing state of the replacement core removal port.

(12) In several embodiments, based on the structure of (11) above,

The refill box for mechanical pencils is provided with a locking mechanism locking unit that maintains the locking mechanism in an unlocked state when the refill outlet is open and the refills for mechanical pencils are exposed.

The embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments and includes modifications of the above-described embodiments and modifications of these embodiments by appropriately combining them.

In this specification, expressions such as "in a certain direction", "along a certain direction", "parallel", "orthogonal", "center", "concentric" or "coaxial" indicate relative or absolute arrangement. It means not only such an arrangement in the strict sense, but also means a state of relative displacement with a tolerance or an angle or a distance sufficient to obtain the same function.

For example, expressions indicating the equal state of things such as "same", "equal" and "homogeneous" represent not only a state of strict equality but also a state where there is a tolerance or a degree of difference that allows the same function to be obtained.

In addition, in this specification, expressions indicating shapes such as a rectangular shape and a cylindrical shape not only mean geometrically strict shapes such as a rectangular shape and a cylindrical shape, but also include concave and convex portions, inverted portions, etc. within the range in which the same effect can be obtained. The shape of corners, etc.

In addition, in this specification, expressions such as "having", "including" or "having" one constituent element are not exclusive expressions that exclude the presence of other constituent elements.

Explanation of reference symbols:

1 Replacement lead box for mechanical pencils

2 box body

2a Replacement core removal port

2b slot

2c bottom

2d main convex part

2dd chamfered part

2e inner bottom

2f Dorsal wall part (dorsal plane part)

2g abdominal wall (abdomen)

2h chimeric protrusion

2i display unit

2j top

2k opening limit wall

2l step part

2m recess

2n concave part

2o concave part

2p rib

2q inner wall surface

2r side wall part

2s side wall part

2t convex part

2u convex part

2v bump

2w convex part

2x slot

2y thinned part

2z concavity

3 Replacement leads for mechanical pencils

4 cover member

4a Engagement groove (key hole part)

4b Movement restriction part (lock prevention wall)

4c Main recess (main combination hole)

4d opening cover (cover)

4e Back cover (sliding back panel)

4f opening restriction rib

4h protrusion

4i first side

4j side wall part

4k second side

4l contact surface

4m trough

5 locking components

5a convex part

5b base

5c Side plate part (side wall part)

5d side plate part (side wall part)

5e bottom wall

5f fitting protrusion

5g core protrusion prevention wall

5h front end

5i bulge

5j convex part

5k recess.

Claims (10)

1. A replacement core box for an automatic pencil, wherein, The replacement core box for mechanical pencils has: The main body of the box is used to store replacement cores for mechanical pencils; a cover member that can open and close the replacement core removal port of the box body by sliding relative to the box body; and A lock member is configured to switch between the box body and the cover member by moving relative to the box body and the cover member in an intersecting direction that intersects with the sliding direction of the cover member relative to the box body. an engaged state in which one of the cover members is engaged and a non-engaged state in which the one of the box body and the cover member is not engaged, In the engaged state, the cover member is configured to maintain a state in which the refill outlet is blocked and in a state in which it cannot slide relative to the box body. 2. The replacement core box for mechanical pencils according to claim 1, wherein, The one of the box body and the lid member includes a movement restriction portion for restricting movement of the lock member in the intersecting direction in the non-engaged state. 3. The replacement core box for mechanical pencils according to claim 1 or 2, wherein, The locking member has a convex portion protruding in a direction from the other of the box body and the cover member toward the one in the intersecting direction, The one of the box body and the cover member has an engaging groove capable of engaging the protruding portion, The engaged state is a state in which the protruding portion is engaged with the engaging groove, and the non-engaged state is a state in which the protruding portion is not engaged with the engaging groove. 4. The replacement core box for mechanical pencils according to claim 3, wherein, The one of the box body and the cover member includes a movement restriction portion for restricting movement of the locking member in the intersecting direction in the non-engaged state, The movement restriction portion includes a contact surface extending along the sliding direction and capable of being contacted by a front end surface of the convex portion in the non-engaged state. 5. The replacement core box for mechanical pencils according to claim 3 or 4, wherein, The cover member has the engaging groove capable of engaging the convex portion of the locking member, The box body includes: A ventral wall portion and a dorsal wall portion, which respectively extend between the bottom of the box body and the refill core removal opening and are opposed to each other; and a pair of side wall portions connecting the ventral wall portion and the dorsal wall portion, The locking member includes: a base portion opposite the ventral wall portion of the box body; and a pair of side plate portions respectively opposed to the pair of side wall portions of the box body, One of the pair of side plate portions includes the convex portion protruding from the base portion in a direction from the bottom toward the refill outlet. 6. The replacement core box for mechanical pencils according to claim 5, wherein, The cover member includes: an opening cover capable of covering the replacement core removal port; and a backside cover portion opposite to the backside wall portion of the box body, The engaging groove is at least partially formed by a first side surface of a protruding portion protruding from a surface of the back side cover portion opposite to the back side wall portion. 7. The replacement core box for mechanical pencils according to claim 6, wherein, The cover member includes a movement restricting portion for restricting movement of the locking member in the intersecting direction in the non-engaged state, The movement restriction portion has a contact surface extending along the sliding direction and capable of being contacted by a front end surface of the convex portion in the non-engaged state, The abutment surface includes a second side of the protrusion of the back side cover. 8. The replacement core box for mechanical pencils according to any one of claims 1 to 7, wherein, The box body is embedded in the locking member, The cover member is movable in the sliding direction relative to the box body and the locking member. 9. The replacement core box for mechanical pencils according to claim 8, wherein, The replacement core box for mechanical pencils has: a main convex portion provided on one of the box body and the lid member; and A main recessed portion is provided on the other of the box body and the cover member and is engaged by the main protruding portion, The cover member is movable relative to the box body and the locking member so as to be pivotable about the main convex portion and the main recessed portion. 10. The replacement core box for mechanical pencils according to any one of claims 1 to 9, wherein, The box body has the replacement core removal opening and the bottom respectively provided at both ends of the box body in the first direction, The refill box for mechanical pencils includes a rib protruding from the inner wall surface of the box body and extending along the first direction.