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 core box for propelling pencil

Technical Field

The present disclosure relates to a replacement lead box for a mechanical pencil.

Background

Conventionally, as a replacement core box for an automatic pencil, there has been known: a main joint portion where the case main body and the cover member are rotatable in a fan-like manner is formed in a bottom direction portion of the case main body as a rotation fulcrum, and an end portion of the replacement core for the mechanical pencil is exposed in an opened state where a replacement core take-out port of the case main body is opened, from which the replacement core for the mechanical pencil is taken out (patent document 1).

Prior art literature

Patent literature

Patent document 1: japanese patent laid-open No. 2020-157539

Disclosure of Invention

Problems to be solved by the invention

Patent document 1 discloses that an operation of rotating a cartridge main body and a cover member in a fan shape with respect to each other is performed by one hand, and an end portion of a refill for an automatic pencil is exposed in an opened state in which a refill take-out port of the cartridge main body is opened. The replacement core for the mechanical pencil is taken out by hand, and the mechanical pencil is replenished with the replacement core for the mechanical pencil.

Then, after the replacement core for the mechanical pencil is replenished into the mechanical pencil, the operation of rotating the cartridge main body and the cover member in a fan-like manner is performed again, and the cover member is brought into a state of closing the replacement core take-out port of the cartridge main body. At this time, a protrusion is formed on one of the cover member and the cartridge body, and a fitting portion of the protrusion is formed on the other, so that the cover member is maintained in a state of closing the refill outlet. However, in the case where the lid member is locked to the cartridge main body by fitting the projection to the fitting portion, it may be difficult to reliably maintain the state in which the lid member closes the replacement core outlet.

In view of the above, an object of at least one embodiment of the present invention is to provide a refill cartridge for an automatic pencil capable of more reliably maintaining a state of closing a refill outlet.

Means for solving the problems

The replacement core box for the mechanical pencil according to at least one embodiment of the present invention 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 lock member configured to switch between an engaged state in which the lock member is engaged with one of the cartridge body and the cover member and a non-engaged state in which the lock member is not engaged with the one of the cartridge body and the cover member by moving the lock 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,

in the engaged state, the cover member is configured to be maintained in a state of closing the refill outlet and in a state of being unable to slide relative to the cartridge body.

Effects of the invention

According to at least one embodiment of the present invention, there is provided a replacement core box for an automatic pencil capable of more reliably maintaining a state of closing a replacement core take-out port.

Drawings

Fig. 1 is a front view showing a state in which a lock member of a replacement core case for a mechanical pencil according to an embodiment is engaged.

Fig. 2 is a front view showing a state in which a lock member of a replacement core case for a mechanical pencil according to an embodiment is not engaged.

Fig. 3 is a front view showing a state in which the lock member of the replacement core case for the mechanical pencil according to the embodiment is not engaged.

Fig. 4 is an exploded perspective view of a replacement core box for a mechanical pencil according to an embodiment, as seen from the front side.

Fig. 5 is an exploded perspective view of a replacement core case for a mechanical pencil according to an embodiment, as seen from the back side.

Fig. 6 is a perspective view showing the replacement core case for the mechanical pencil shown in fig. 4 and 5, when the locking member is in an engaged state.

Fig. 7 is a cross-sectional view of the replacement core box for the mechanical pencil shown in fig. 6.

Fig. 8 is a perspective view showing the replacement core case for the mechanical pencil shown in fig. 4 and 5 when the locking member is in a non-engaged state.

Fig. 9 is a cross-sectional view of the replacement core box for the mechanical pencil shown in fig. 8.

Fig. 10 is a perspective view showing the replacement core case for the mechanical pencil shown in fig. 4 and 5 when the locking member is in a non-engaged state.

Fig. 11 is a sectional view of the replacement core box for the mechanical pencil shown in fig. 10.

Fig. 12 is a cross-sectional view A-A showing a state in which a plurality of replacement cores are accommodated in fig. 7.

Fig. 13 is a perspective view similar to fig. 10, showing a state in which a plurality of replacement cores are accommodated in a replacement core box.

Detailed Description

Several embodiments of the present invention will be described below with reference to the accompanying drawings. The dimensions, materials, shapes, relative arrangements, and the like of the constituent members described as the embodiments or shown in the drawings are not intended to limit the scope of the present invention thereto, but are merely illustrative examples.

Fig. 1 to 3 are front views of a replacement core case for an mechanical pencil according to an embodiment, each of which shows a state in which a lock member is engaged, a state in which the lock member is disengaged and a replacement core take-out port is blocked, and a state in which the lock member is disengaged and the replacement core take-out port is opened.

Fig. 4 and 5 are exploded perspective views, respectively, from the front side and the rear side of a replacement core case for a mechanical pencil according to an embodiment. Fig. 6, 8 and 10 are perspective views of the replacement core case for the mechanical pencil shown in fig. 4 and 5, respectively showing the state in which the lock member is engaged, the state in which the lock member is disengaged and the replacement core take-out port is blocked, and the state in which the lock member is disengaged and the replacement core take-out port is opened. Fig. 7, 9 and 11 are sectional views of the replacement core box for the mechanical pencil shown in fig. 6, 8 and 10, respectively. Fig. 12 is a cross-sectional view A-A of fig. 7. Fig. 13 is a perspective view similar to fig. 10, showing a state in which a plurality of replacement cores are accommodated in a replacement core box.

As shown in fig. 1 to 13, a refill cartridge (hereinafter, also referred to as a refill cartridge) 1 for a mechanical pencil according to several embodiments includes a cartridge main body 2, a cover member 4, and a lock member 5.

The cartridge body 2 is configured to be able to house a refill 3 for a mechanical pencil (see fig. 3 to 5, etc.). The cartridge main body 2 has a replacement core take-out port 2a, which is an opening for taking in and out the replacement core 3, and a bottom 2c, and extends between the replacement core take-out port 2a and the bottom 2 c. In the illustrated exemplary embodiment, the cartridge body 2 extends along the length direction of the cartridge body 2 between the replacement core extraction port 2a and the bottom 2 c.

The distance from the inner bottom 2e (see fig. 7, etc.) to the replacement core outlet 2a in the longitudinal direction of the cartridge body 2 may be shorter than the length of the replacement core 3 housed in the cartridge body 2. In this case, since a part of the refill 3 stored in the cartridge body 2 is exposed from the cartridge body 2, the refill 3 is easily taken out from the cartridge body 2 in a state where the refill take-out port 2a is opened.

The cover member 4 is configured to be slidable with respect to the cartridge body 2, and can open and close the replacement core extraction port 2a of the cartridge body 2 by sliding with respect to the cartridge body 2. The state in which the refill outlet 2a is opened means a state in which at least a part of the refill outlet 2a is not covered with the cover member 4, and the refill 3 housed in the cartridge main body 2 is taken out with a finger. The state in which the refill taking-out port 2a is closed is a state in which the entire refill taking-out port 2a is covered with the cover member 4, and the refill 3 accommodated in the cartridge main body 2 cannot be taken out with a finger.

The lock member 5 is configured to be moved relative to the cartridge body 2 and the cover member 4 in a crossing direction crossing a sliding direction of the cover member 4 relative to the cartridge body 2, thereby switching between an engaged state in which the lock member is engaged with one of the cartridge body 2 and the cover member 4 and a non-engaged state in which the lock member is not engaged with the one of the cartridge body 2 and the cover member 4.

In the engaged state of the lock member 5, the replacement core outlet 2a is kept closed by the cover member 4, and the cover member 4 cannot slide with respect to the cartridge main body 2. On the other hand, in the non-engaged state of the lock member 5, the cover member 4 is slidable with respect to the cartridge body 2, and the replacement core outlet 2a can be opened or closed by sliding the cover member 4 with respect to the cartridge body 2.

In the illustrated exemplary embodiment, the cover member 4 is slidable in the second direction with respect to the cartridge body 2, and the lock member 5 is movable in the first direction intersecting the second direction with respect to the cartridge body 2 (refer to fig. 1 to 3, 7, 9, and 11). The first direction may be a direction connecting the replacement core extraction port 2a of the cartridge body 2 to the bottom 2c, or may be a longitudinal direction of the cartridge body 2. The second direction may be a direction orthogonal to the first direction or a width direction of the cartridge body 2.

In the above embodiment, the replacement core box 1 for a mechanical pencil includes: a cover member 4 that can open and close the replacement core extraction port 2a of the cartridge body 2 by sliding with respect to the cartridge body 2; and a locking member 5 engageable with one of the cartridge body 2 and the cover member 4. By moving the lock member 5 in the intersecting direction, it is possible to switch between an engaged state in which the lock member 5 is engaged with one of the cartridge body 2 and the cover member 4 and a non-engaged state in which the lock member 5 is not engaged with the one of the cartridge body 2 and the cover member 4.

Therefore, by engaging the lock member 5 with one of the cartridge main body 2 and the cover member 4, the cover member 4 can close the replacement core take-out port 2a and maintain a state (engaged state) in which the cover member 4 cannot slide, so that the replacement core take-out port 2a can be maintained more reliably in a closed state. Further, by moving the lock member 5 in the intersecting direction, the engagement state described above and the non-engagement state in which the cover member 4 can slide with respect to the cartridge main body 2 can be easily switched.

In several embodiments, the lock member 5 has a convex portion 5a protruding in the direction from the other of the cartridge body 2 and the cover member 4 (the one to which the lock member 5 is not engaged) toward the one of the cartridge body 2 and the cover member 4 (the one to which the lock member 5 is engaged) in the above-described intersecting direction (the first direction in the illustrated embodiment). The one of the cartridge main body 2 and the cover member 4 (the one to which the lock member 5 is engaged) has an engagement groove 4a into which the protruding portion 5a can be engaged. In the engaged state of the lock member 5, the protruding portion 5a is engaged with the engagement groove 4a, and in the disengaged state of the lock member 5, the protruding portion 5a is not engaged with the engagement groove 4a. In the engaged state, the protruding portion 5a may be fitted into the engaging groove 4a with a slight gap from the engaging groove 4a.

In the exemplary embodiment shown in fig. 1 to 3 and 4 to 13, the lock member 5 has a convex portion 5a protruding in the direction from the cartridge body 2 toward the cover member 4 in the above-described intersecting direction (direction along the first direction). The cover member 4 has an engagement groove 4a into which the protruding portion 5a of the lock member 5 can be engaged.

In the exemplary embodiment shown in fig. 1 to 3, the lock member 5 including the protruding portion 5a is supported on the cartridge main body 2 so as to be movable along the groove 2b extending in the intersecting direction. Further, the cover member 4 is formed with an engagement groove 4a recessed from the surface of the cover member 4 and extending in the intersecting direction. The protruding portion 5a of the lock member 5 can be engaged with the engagement groove 4a provided in the cover member 4.

In the exemplary embodiment shown in fig. 4 to 13, the cartridge body 2 includes: a side wall section 2g and a back wall section 2f which extend between the bottom section 2c of the cartridge main body 2 and the replacement core extraction port 2a, respectively, and are opposed to each other; and a pair of side wall portions 2r, 2s connecting the abdominal side wall portion 2g and the back side wall portion 2 f. In addition, the lock member 5 includes: a base 5b facing the side wall 2g of the case main body 2; and a pair of side plate portions 5d, 5c which are respectively opposed to the pair of side wall portions 2r, 2s of the cartridge main body 2. The side plate portion 5d of the pair of side plate portions 5d, 5c of the lock member 5 includes a convex portion 5a, and the convex portion 5a protrudes from the base portion 5b in a direction from the bottom 2c of the cartridge main body 2 toward the replacement core extraction port 2 a.

In addition, in the exemplary embodiment shown in fig. 4 to 13, the cover member 4 includes: an opening cover 4d capable of covering the replacement core extraction opening 2a of the cartridge main body 2; a back cover portion 4e facing the back side wall portion 2f of the cartridge main body 2. The engagement groove 4a is formed at least partially by a first side surface 4i of a protruding portion 4h protruding from a surface of the back cover portion 4e facing the back side wall portion 2f (the cartridge main body 2). The first side surface 4i is a surface extending along the first direction. More specifically, the engagement groove 4a is formed at least partially by the first side surface 4i and the inner wall surface of the side wall portion 4j of the cover member 4.

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

According to the above-described embodiment, the protruding portion 5a is provided in the lock member 5, and the engaging groove 4a capable of engaging with the protruding portion 5a of the lock member 5 is provided in the cartridge main body 2 or the cover member 4 (the cover member 4 in the illustrated embodiment). Therefore, by moving the lock member 5 in the intersecting direction, the convex portion 5a of the lock member 5 can be engaged with the engagement groove 4a of the cartridge main body 2 or the cover member 4, or the engagement of the convex portion 5a with the engagement groove 4a can be released.

In the exemplary embodiment shown in fig. 4 to 13, the cartridge body 2 is fitted into the lock member 5, and the cover member 4 is movable in the sliding direction along the second direction with respect to the cartridge body 2 and the lock member 5.

As shown in fig. 7, 9, and 11, in a state where the cartridge body 2 is fitted into and assembled to the lock member 5, the cartridge body 2 is slidable with respect to the lock member 5 along the longitudinal direction of the cartridge body 2. The position of the lock member 5 in the longitudinal direction of the cartridge body 2 is restricted by engagement of the projections 2t, 2u, 2v, 2w of the cartridge body 2 projecting in the width direction toward the lock member 5 with the projections 5i, 5j of the lock member 5 projecting in the width direction toward the cartridge body 2.

That is, the lower surfaces (the surfaces on the bottom 2c side in the longitudinal direction of the cartridge body 2) of the protruding portions 2t, 2v of the cartridge body 2 come into contact with the upper surfaces (the surfaces on the replacement core extraction port 2a side in the longitudinal direction of the cartridge body 2) of the protruding portions 5i, 5j of the lock member 5, and the position of the lock member 5 on the most proximal replacement core extraction port 2a side in the longitudinal direction of the cartridge body 2 is restricted. Further, the upper surfaces of the protruding portions 2u, 2w of the cartridge body 2 (the surface on the side of the replacement core extraction opening 2a in the longitudinal direction of the cartridge body 2) are brought into contact with the lower surfaces of the protruding portions 5i, 5j of the lock member 5 (the surface on the side of the bottom 2c in the longitudinal direction of the cartridge body 2), whereby the position of the lock member 5 on the side of the bottom 2c in the longitudinal direction of the cartridge body 2 is restricted.

The protruding portions 5i and 5j of the lock member 5 move in the recessed portions 2z and 2m provided in the side wall portions 2r and 2s of the cartridge main body 2, respectively. The recess 2z is provided in a region between the projections 2t and 2u in the longitudinal direction of the cartridge body 2, and the recess 2m is provided in a region between the projections 2v and 2w in the longitudinal direction of the cartridge body 2.

Therefore, the cartridge body 2 and the lock member 5 can be moved integrally in a state where the cartridge body 2 is fitted into the lock member 5. The cartridge body 2 is integrated with the lock member 5 by engagement of the convex portions 5i and the concave portions 2z and engagement of the convex portions 5j and the concave portions 2m on both side portions of the cartridge body 2 and the lock member 5, and can be prevented from being disassembled and separated.

In the above-described embodiment, since the cartridge body 2 is fitted into the lock member 5, the cover member 4 can be easily slid with respect to the cartridge body 2 and the lock member 5 by, for example, one-handed operation.

In the illustrated embodiment, the back side wall portion 2f of the cartridge body 2 faces the plate-shaped back side cover portion 4e of the cover member 4, and therefore, by making the cartridge body 2 follow the back side cover portion 4e, the cover member 4 can be smoothly slid with respect to the cartridge body 2 (and the lock member 5).

In the illustrated embodiment, a fitting protrusion 2h protruding in the second direction toward the side plate portion 5c of the lock member 5 is formed in the side wall portion 2s of the cartridge body 2, and a fitting protrusion 5f protruding in the second direction toward the side wall portion 2s of the cartridge body 2 is formed in the side plate portion 5c of the lock member 5. In the engaged state of the lock member 5, the fitting projection 2h is fitted with the fitting projection 5f. Thus, the engagement state of the lock member 5 is easily maintained in a state where the opening and closing operation of the replacement cartridge 1 is not performed (i.e., in a state where a force is not applied to move the lock member 5 and the cover member 4).

In several embodiments, for example, as shown in fig. 4 to 13, the replacement cartridge 1 includes: a main protruding portion 2d provided on one of the cartridge body 2 and the cover member 4 (in the example shown in fig. 4 to 13, the cartridge body 2); and a main concave portion 4c provided on the other of the cartridge main body 2 and the cover member 4 (in the example shown in fig. 4 to 13, the cover member 4) and engaged with the main convex portion 2 d. The cover member 4 is movable relative to the cartridge body 2 and the lock member 5 so as to pivot about the main convex portion 2d and the main concave portion 4 c. In the exemplary embodiment shown in fig. 4 to 13, the main recess 4c is a hole provided in the cover member 4.

In the above-described embodiment, the cover member 4 is movable relative to the cartridge body 2 and the lock member 5 so as to be pivotable about the main convex portion 2d and the main concave portion 4c, and therefore, for example, by one-hand operation, the cover member 4 can be easily slid relative to the cartridge body 2 and the lock member 5.

In this embodiment, the sliding direction of the cover member 4 with respect to the cartridge body 2 is the same as the rotational direction of the cover member 4 centering on the main convex portion 2d and the main concave portion 4c, and the cover member 4 moves on an arcuate track. The sliding direction (rotational direction) is a direction along the second direction (direction along the width direction of the cartridge body 2).

In several embodiments, for example, as shown in fig. 1 to 13, one of the cartridge body 2 and the cover member 4, which engages with the lock member 5, includes a movement restricting portion 4b for restricting movement of the lock member 5 in the non-engaged state in a direction intersecting (in a direction along the second direction) from the other of the cartridge body 2 and the cover member 4 toward the one.

In the exemplary embodiment shown in fig. 1 to 13, the cover member 4 includes the movement restricting portion 4b described above, and the movement restricting portion 4b is configured to restrict movement of the lock member 5 in the non-engaged state in the intersecting direction (direction along the second direction) from the cartridge main body 2 toward the cover member 4.

In the above-described embodiment, the movement restricting portion 4b for restricting the movement of the lock member 5 in the cross direction in the non-engaged state is provided, so that the lock member 5 in the non-engaged state can be prevented from moving in the cross direction. Therefore, the sliding movement of the cover member 4 with respect to the cartridge main body 2 can be suppressed from being hindered by the unintentional movement of the lock member 5 in the intersecting direction.

In the exemplary embodiment shown in fig. 1 to 13, the movement restricting portion 4b has an abutment surface 4l extending in the sliding direction, and the distal end surface 5h of the protruding portion 5a of the lock member 5 in the non-engaged state can abut.

In this case, the distal end surface 5h of the protruding portion 5a of the lock member 5 abuts against the abutment surface 41 of the movement restricting portion 4b, so that movement in the intersecting direction (direction along the second direction) of the lock member 5 in the engaged state is restricted.

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

According to the above embodiment, by the simple configuration in which the above-described protruding portion 4h is provided in the cover member 4, the engagement groove 4a can be formed by the first side surface 4i of the protruding portion 4h, and in addition, the abutment surface 4l of the movement restricting portion 4b can be formed by the second side surface 4k of the protruding portion 4 h.

In the exemplary embodiment shown in fig. 4 to 13, the second side surface 4k has a circular arc shape. Therefore, in the non-engagement state, the movement of the cover member 4 in the intersecting direction (the direction along the second direction) of the lock member 5 rotating together with the cartridge main body 2 around the main convex portion 2d and the main concave portion 4c can be appropriately restricted.

In several embodiments, for example, as shown in fig. 12, the replacement cartridge 1 is provided with a rib 2p, and the rib 2p protrudes from the inner wall surface 2q of the cartridge body 2 and extends in the first direction (longitudinal direction of the cartridge body 2).

According to the above embodiment, since the rib 2p protruding from the inner wall surface 2q of the cartridge body 2 and extending in the first direction (the direction connecting the refill outlet 2a to the bottom 2 c) is provided, the plurality of refill 3 for mechanical pencil housed in the cartridge body 2 can be divided into the groups of a small number of refill 3 by the rib 2 p. Therefore, as shown in fig. 13, a small number of replacement cores 3 can be easily taken out in a state where the replacement core take-out port 2a of the cartridge main body 2 is opened.

By appropriately setting the installation position of the rib 2p (for example, the distance between the side wall portion 2s and the rib 2 p), the number of sorted replacement cores 3 can be adjusted. For example, by setting the distance between the side wall portion 2s and the rib 2p to be more than 1 time and 2 times or less the thickness of 1 replacement core 3, it is easy to sort out only 1 replacement core.

In several embodiments, for example, as shown in fig. 1 to 13, the replacement core cartridge 1 for an automatic pencil is composed of only three components composed of a component including the cartridge body 2, a component including the cover member 4, and a component including the locking member 5.

In this case, the replacement core box for the mechanical pencil is configured with a small number of components, so that the replacement core extraction port can be maintained in a closed state more reliably while suppressing an increase in manufacturing cost, and the engagement state and the non-engagement state of the lock member 5 can be easily switched.

The replacement core box for a mechanical pencil according to several embodiments will be described in more detail below.

The replacement core box for a mechanical pencil according to several embodiments of the present invention is constituted by at least a box main body having a bottomed tubular shape for housing a replacement core for a mechanical pencil, and a cover member capable of sealing a replacement core take-out port of the box main body, and a lock mechanism is formed in at least one of the cover member and the box main body, and is configured to be displaced to a position where the lock mechanism is brought into contact with an engagement groove (lock hole portion) of the other side by an operation, thereby restricting relative sliding between the box main body and the cover member, and to maintain a closed state of the box main body. The mechanical pencil comprises a locking mechanism locking unit which is in a non-locking state by the locking mechanism in a state that the replacement core for the mechanical pencil is exposed by opening the replacement core taking-out opening.

The shape of the case main body and the cover member is preferably a flat box shape so as to facilitate both sliding and opening/closing operations and easy finger operation, but may be a cylindrical shape, an elliptical cylinder shape, a cross-sectional triangular box shape, a cross-sectional quadrangular box shape, or a cross-sectional polygonal box shape within the range of not impairing the advantages of the present invention such as convenience of operation and ease of manufacture.

The sliding of the cartridge main body and the lid member in association with the opening/closing operation may be linear parallel movement, meandering movement, or a fan-like structure with the main joint portion as the rotation center, or a rotational screw movement such as a double cylinder.

In the case of a fan-like sliding movement with the main joint portion as the rotation center, the main joint portion serving as a fulcrum for fan-like rotation of the cartridge main body and the cover member can be set to: a convex portion is formed in one of the cartridge body and the cover member and a concave portion or hole into which the convex portion is fitted is formed in the other, or a grommet member is fitted into the concave portion or hole formed in both.

The case body is formed with a refill outlet at a position at a distance from the inner bottom of the case body shorter than the full length of the refill for the mechanical pencil to be housed, and the end of the refill for the mechanical pencil is exposed in a state where the refill outlet is opened.

The shape of the opening edge of the refill outlet may be a rectangular shape, a circular shape, an elliptical shape, a triangular shape, a quadrangular shape, another polygonal shape, or the like, and thus may be a shape different from the outer shape of the cartridge body.

The cover member has a back cover portion (sliding back plate portion) having a planar inner surface between sliding surfaces that slide relative to the cartridge main body and the opening cover portion (cover portion) covering the replacement core take-out port.

The surface of the cartridge body facing the back cover portion of the cover member is also formed as a slidable back side wall portion (back plane portion). The shape of the case is a flat surface, but the case body and the cover member may be slid relatively, and may be, for example, a flat surface having a wavy plate shape or a grid shape with a gap or the like formed therebetween, or may be formed in a concave-convex relationship along a straight line or a fan-shaped rotation rail. However, it can be said that it is advantageous in terms of manufacturing and driving that the surfaces are smooth.

By forming a projection on one of the cover member and the cartridge body and forming a fitting portion of the projection on the other, the mechanism can be provided that maintains a state in which the cover member closes the replacement core take-out port. In addition, the frictional resistance of the opposed sliding surfaces can be adjusted regardless of the fitting of the projections and depressions, and the operating position of the cover member can be maintained.

Alternatively, the relative movement can be controlled by using a component structure such as an elastic member, a piston, a damper, or the like between the cover member and the cartridge body.

By providing a structure in which the lock member is disposed in the cartridge main body so as to slide along the cartridge main body and a part of the lock member is inserted into and removed from the engagement groove (lock hole portion) of the cover member, the size of the entire replacement core cartridge for the mechanical pencil can be changed between the locked state and the unlocked state, and the locked state and/or the unlocked state can be easily checked by visual inspection.

Further, with an operation such as sliding the lock member with respect to the cartridge main body, a part of the cartridge main body can be exposed to display a locked state. The display unit may be a character or a logo, or may be a part of the exposed surface, such as a notch or a window, to expose the replacement core for the mechanical pencil for the content, and is not particularly limited as long as the changed state can be recognized. The display content may be provided with irregularities directly on the member, or may be provided with colored characters or marks by appropriately changing the roughness of the surface of the display portion, transferring, painting, or the like.

The replacement core case for an automatic pencil according to several embodiments of the present invention includes the locking mechanism locking means, whereby erroneous operation of the locking operation (driving of the locking member in the unlocked state is prohibited) can be prevented in a state where the replacement core extraction port is opened and the replacement core for an automatic pencil is exposed.

Further, prohibiting the driving of the lock member in the unlocked state means preventing the lock member from obstructing the operation for bringing the cover member and the cartridge body into a closed state (a state in which the replacement core for the mechanical pencil is not exposed), and can suppress breakage or the like due to collision of unnecessary members.

The locking mechanism locking means may be a mechanism in which a movement restricting portion (locking preventing wall) is formed in the cover member, the locking member is brought into contact with the movement restricting portion (locking preventing wall) and is not driven as a locking mechanism, or a rack-pinion or a worm gear is rotated by a force in conjunction with a relative sliding motion of the cover member and the box main body, or an unlocked state of the locking member is maintained by a link mechanism such as a leg of a folding machine, as long as a misoperation of a locking operation (driving of the locking member in an unlocked state is prohibited) can be prevented.

In order to set the formation range of the movement restricting portion (lock preventing wall) to the entire range where the lock mechanism is located, the movement range of one of the cover member and the cartridge main body to which the lock member is disposed can be restricted. For example, both sides may have a barrier wall for limiting the maximum opening amount of the lid member or the cartridge main body.

AS materials constituting the case main body, the cover member, and the lock member, various synthetic resins such AS acrylonitrile styrene copolymer resin (AS resin), acrylonitrile butadiene styrene copolymer resin (ABS resin), polycarbonate resin (PC resin), polystyrene resin (PS resin), polyoxymethylene (polyacetal) resin (POM resin), polybutylene terephthalate resin (PBT resin), polypropylene resin (PP resin), polyethylene terephthalate resin (PET resin), and the like can be used.

In addition, when the cartridge main body, the cover member, and the lock member are made of the same material, sliding failure may occur due to high affinity and adhesion between materials, and it is preferable to use the two members of different materials, or to apply a lubricant such as silicone oil or grease between the two members. Further, the case main body is preferably formed of a resin having high transparency such AS acrylonitrile styrene copolymer resin (AS resin) so that the housed replacement core for the mechanical pencil can be observed.

The coloring may be transparent or translucent, and may be appropriately selected according to the application. In order to display the high-quality feeling, a metal may be used, and the material is not particularly limited. Alternatively, the appearance surface may be a glossy surface or a wrinkled surface, or a decoration such as printing may be applied.

A replacement core box for a mechanical pencil according to an embodiment shown in fig. 1 to 3 will be described. Since fig. 1 to 3 show only the operation of replacing the core case 1 for the mechanical pencil, a mechanism, a locking structure, and the like necessary for sliding are omitted.

Hereinafter, the replacement core extraction port 2a side of the cartridge main body 2 is referred to as an upward direction, the bottom side is referred to as a bottom direction, the front side is referred to as a front direction, the back side is referred to as a back direction, and the side surface side is referred to as a lateral direction.

As shown in fig. 1, the replacement core box 1 for a mechanical pencil includes: a box-shaped bottomed tubular case body 2 accommodating a replacement core for a mechanical pencil; a box-shaped cover member 4 capable of sealing the replacement core take-out port 2a of the cartridge main body 2; and a convex locking member 5 that performs a locking operation.

Along the groove 2b of the cartridge body 2, the lock member 5 is slidable in the upward direction and the bottom direction side. In addition, the cartridge body 2 can be slid in the lateral direction relative to the cover member 4 so that the replacement core take-out port of the cartridge body 2 is exposed by the sliding.

As shown in fig. 1, in a state (engaged state) in which the protruding portion 5a of the lock member 5 is fitted into the engagement groove (lock hole portion) 4a of the cover member 4, the cartridge main body 2 is engaged with the protruding portion 5a of the lock member 5 and is in a state (locked state) in which it is not possible to slide in the lateral direction relative to the cover member 4.

As shown in fig. 2, the locking member 5 is slid in the bottom direction along the groove 2b of the cartridge body 2, and the protruding portion 5a of the locking member 5 is pulled out from the engagement groove (lock hole portion) 4a of the cover member 4, whereby the locked state is released (non-engaged state), the cartridge body 2 and the cover member 4 can slide in the lateral direction relative to each other, the refill extraction opening 2a of the cartridge body 2 is opened, and the refill 3 for the mechanical pencil is exposed to extract the refill 3 for the mechanical pencil (see fig. 3). At this time, since the movement restricting portion (locking preventing wall) 4b of the cover member 4 is located above the protruding portion 5a of the lock member 5, the movement of the lock member 5 in the upward direction is restricted and cannot be moved, and thus erroneous operation of the locking operation (maintenance of the unlocked state) can be prevented.

A replacement core box for a mechanical pencil according to an embodiment shown in fig. 4 to 11 will be described. Hereinafter, the side of the cartridge body 2 on which the refill is taken out 2a is referred to as the upper direction, the side of the bottom 2c is referred to as the bottom direction, the front side is referred to as the front direction, and the back side is referred to as the back direction.

As shown in fig. 4 as an exploded perspective view of the embodiment and fig. 5 as an exploded perspective view seen from the back of fig. 4, the replacement core box 1 for an automatic pencil has: a flat box-shaped bottomed tubular case body 2 accommodating a replacement core 3 for a mechanical pencil; a flat box-shaped cover member 4; and a locking member 5 that performs a locking operation.

The main protruding portion 2d of the cartridge main body 2 and the main recessed portion (main coupling hole) 4c of the cover member 4 are formed in the bottom direction portion of the replacement core cartridge 1 for the mechanical pencil, respectively, and the main protruding portion 2d is inserted into and fitted into the main recessed portion (main coupling hole) 4c to form a main coupling portion, so that the cartridge main body 2 and the cover member 4 can be relatively rotated in a fan shape around the portion.

The lock member 5 has a flat plate-shaped base portion 5b, side plate portions (side wall portions) 5c and 5d, and a bottom wall portion 5e, and is covered with the side plate portions (side wall portions) 5c and 5d on both sides and fitted to the outside of the cartridge body 2 so as to be slidable in the upward direction and the bottom direction relative to the cartridge body 2.

A groove 2x along the width direction of the cartridge body 2 is provided in the bottom 2c of the cartridge body 2. Thus, when the main convex portion 2d of the cartridge body 2 is inserted into the main concave portion 4c of the cover member 4, the cartridge body 2 can flex, and breakage of the cartridge body 2 can be suppressed.

The main protrusion 2d of the cartridge body 2 includes a chamfered portion 2dd whose thickness of the main protrusion 2d changes in a tapered shape. The cover member 4 is provided with a groove 4m recessed from the inner surface of the cover member 4 around the main recess 4c. Therefore, the main convex portion 2d of the cartridge main body 2 can be smoothly inserted into the main concave portion 4c of the cover member 4.

The case main body 2 has a rectangular refill-taking-out opening 2a formed at a position shorter than the entire length of the refill 3 for the mechanical pencil housed in the case main body 2 from an inner bottom 2e thereof, and an end portion of the refill 3 for the mechanical pencil is exposed in an opened state.

The length of the exposed end portion of the replacement core 3 for the mechanical pencil may be adjusted by adjusting the distance of the replacement core take-out port 2a from the inner bottom 2e of the case main body 2, but the length of the exposed end portion of the replacement core 3 for the mechanical pencil required for pinching the number of required tips by visual observation is preferably 1.8mm or more and 12mm or less.

The exposed end portions of the replacement cores 3 for mechanical pencils housed in the case main body 2 can be aligned by positioning the replacement core take-out port 2a and the inner bottom 2e in parallel with the same shape, but the inner bottom 2e may be arranged in a non-parallel manner such as being inclined with respect to the replacement core take-out port 2a in order to facilitate taking out of one or a small number of replacement cores 3 for mechanical pencils.

When ribs or the like are formed in the case main body 2 and a large number (20 or more) of the built-in replacement cores 3 for mechanical pencils are accommodated in the case main body 2, the number can be located in a different area in the container, and the number of exposed replacement cores 3 for mechanical pencils can be set to a specific small number (1 to 5).

The cover member 4 has: an opening cover (cover) 4d covering the replacement core extraction port 2a; and a main concave portion (main coupling hole) 4c which is a main coupling portion with respect to the cartridge main body 2, and an inner surface of a portion between the two portions is a planar back side cover portion (sliding back plate portion) 4e opposed to a back side wall portion (back plane portion) 2f of the cartridge main body 2.

Fig. 6 and 7 show a state in which the relative movement between the cartridge main body 2 and the cover member 4 is locked.

The lock member 5 is disposed so as to cover a side wall portion (abdomen portion) 2g of the cartridge main body 2 on the opposite side of the back side wall portion (back plane portion) 2f, and the lock member 5 is slid with respect to the cover member 4, whereby a locked state and an unlocked state, which will be described later, can be switched.

The locking member 5 is slid with respect to the cover member 4 to bring the protruding portion 5a of the locking member 5 into a state (engaged state) in which it is inserted into the engagement groove (lock hole portion) 4a of the cover member 4, so that the cartridge main body 2 and the cover member 4 cannot move relatively. At this time, the locking state can be maintained by fitting the fitting protrusion 2h formed in the cartridge body 2 with the fitting protrusion 5f formed in the locking member 5.

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

The locking member 5 is slid in the bottom direction with respect to the cartridge body 2, whereby the protruding portion 5a of the locking member 5 is pulled out of the engagement groove (lock hole portion) 4a of the cover member 4, and the cartridge body 2 and the cover member 4 are in a state (unlocked state) in which they can move relatively. The locking member 5 disposed so as to cover the side wall portion (abdomen portion) 2g on the opposite side of the back side wall portion (back plane portion) 2f of the cartridge body 2 is moved in the bottom direction with respect to the cartridge body 2, whereby the entire length of the replacement core cartridge 1 for the mechanical pencil is lengthened, and therefore the unlocked state can be visually confirmed. In the unlocked state, the fitting protrusion 2h formed on the cartridge body 2 is fitted to the fitting protrusion 5f formed on the lock member 5, whereby the unlocked state can be maintained.

When the above-described lock member 5 is slid in the bottom direction with respect to the cartridge main body 2 in order to set the unlocked state, the upper part of the side wall part (abdomen part) 2g of the cartridge main body 2 is exposed, and a display part 2i indicating the unlocked state is formed on the exposed side wall part (abdomen part) 2g to display the unlocked state.

In the locked state, the core protrusion preventing wall 5g protrudes upward from the replacement core extracting port 2a, and therefore, in association with an operation of sliding the lock member 5 in the bottom direction with respect to the cartridge main body 2 in the unlocking operation, the core protrusion preventing wall 5g formed in the lock member 5 also moves downward in conjunction with the non-locked state to a position substantially identical to or lower than the top 2j of the cartridge main body 2.

In addition, since the refill protrusion preventing wall 5g protrudes upward from the refill extracting port 2a in the locked state, it functions as a shutter to prevent foreign matter from entering from the hole in the side surface of the refill cartridge 1 for the mechanical pencil, and in the unlocked state, the refill 3 for the mechanical pencil is not obstructed from being extracted by the refill protrusion preventing wall 5g when the refill 3 for the mechanical pencil is directly pinched and extracted by a finger from the refill extracting port 2a in the open state. The core protrusion preventing wall 5g may be formed on the cartridge body 2 side.

Fig. 10 and 11 show a state in which the replacement core extraction port 2a of the cartridge body 2 is opened.

By rotating the cartridge body 2 in a fan shape relative to the cover member 4, the refill extracting port 2a of the cartridge body 2 is opened, and the refill 3 for the mechanical pencil is exposed to extract the refill 3 for the mechanical pencil. At this time, since the movement restricting portion (locking preventing 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 unlock state is maintained to prevent the erroneous operation of the lock member 5.

The movement restricting portion (lock preventing wall) 4b is formed in a range that restricts movement of the lock member 5 in the upward direction during the opening operation of the cartridge body 2.

Further, when the cartridge main body 2 is rotated in a fan-like manner relative to the cover member 4, the opening restriction wall 2k of the cartridge main body 2 comes into contact with the opening restriction rib 4f of the cover member 4, and thus the movement range of the protruding portion 5a of the lock member 5 that moves together with the cartridge main body 2 can be restricted within the formation range of the movement restriction portion (lock prevention wall) 4b that is disposed so as to be located above the protruding portion 5a, so that the lock member 5 cannot move in the upward direction, and erroneous operation of the lock operation can be prevented more reliably (the unlocked state is maintained). As shown in fig. 5, the opening restriction wall 2k may be formed by an inner surface of a recess 2o recessed from a surface of the back side wall portion 2 f.

After the mechanical pencil is replenished with the replacement core 3, the cartridge main body 2 is rotated in a fan shape relative to the cover member 4 to close the replacement core take-out port 2a, and the operation of sliding the lock member 5 upward with respect to the cartridge main body 2 is performed, so that the replacement core take-out port 2a is again kept closed. At this time, the lock member 5 is slid upward with respect to the case main body 2, so that the entire length of the replacement core case 1 for the mechanical pencil is restored, and the locked state can be easily confirmed by visual inspection.

As shown in fig. 4, the side wall portion 2g of the cartridge main body 2 may have a stepped portion 2l at an end portion on the side of the refill extracting port 2a, and the stepped portion 2l may have a surface recessed from the surface of the side wall portion 2 g. In this case, even when the open lid portion 4d of the lid member 4 is deformed to be narrow after molding, the gap between the open lid portion 4d and the cartridge main body 2 is easily maintained. Therefore, the cover member 4 is easily slid smoothly with respect to the cartridge main body 2.

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

If the sliding operation of the cover member 4 with respect to the cartridge body 2 is repeated, scratches may occur on the surface of the back side wall portion 2f of the cartridge body 2 and the inner surface of the back side cover portion 4e of the cover member 4. In this regard, by providing the concave portion 2n, the contact area between the back side wall portion 2f and the back side cover portion 4e can be reduced, and therefore, the occurrence of the scratch can be suppressed.

As shown in fig. 4, the cartridge body 2 may have a thinned portion 2y recessed from the abdominal side wall portion 2g or the back side wall portion 2 f. The thinned portion 2y may be provided at a position different from the portion accommodating the replacement core 3 in the longitudinal direction of the cartridge body 2. In the example shown in fig. 4, the thinned portion 2y is provided at a position closer to the bottom portion 2c than the inner bottom portion 2e (see fig. 7) in the longitudinal direction of the cartridge body 2. By providing such a thinned portion 2y, the thickness of the material such as resin is easily made uniform and shrinkage is easily prevented during molding of the cartridge body 2.

As shown in fig. 5, the base portion 5b of the lock member 5 may also have a stepped portion 5k, the stepped portion 5k having a surface recessed from the inner side surface of the base portion 5 b. By providing the stepped portion 5k, the thickness of the base portion 5b of the lock member 5 is thinned, and thus the thickness of the cartridge main body 2 is easily increased. This can increase the sectional area of the storage portion of the refill 3 of the cartridge body 2, and can easily put the refill 3 into the cartridge body 2. Therefore, when the replacement core cartridge 1 is produced, occurrence of defects when the replacement core 3 is put into the cartridge body 2 can be suppressed.

The contents described in the above embodiments are grasped as follows, for example.

(1) A refill cartridge (1) for a mechanical pencil according to at least one embodiment of the present invention comprises:

a case main body (2) for housing a replacement core (3) for a mechanical pencil;

a cover member (4) that can open and close the replacement core extraction port (2 a) of the cartridge body by sliding with respect to the cartridge body; and

a locking member (5) 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,

In the engaged state, the cover member is configured to be maintained in a state of closing the refill outlet and in a state of being unable to slide with respect to the cartridge body.

According to the structure of the above (1), the refill cartridge for a mechanical pencil comprises: a cover member that can open and close the replacement core take-out port of the cartridge body by sliding with respect to the cartridge body; and a locking member engageable with one of the cartridge body and the cover member. Further, by moving the lock member in the intersecting direction, it is possible to switch between an engaged state in which the lock member is engaged with one of the cartridge main body and the cover member, and a non-engaged state in which the lock member is not engaged with the one of the cartridge main body and the cover member.

Therefore, by engaging the lock member with one of the cartridge main body and the cover member, the cover member can close the refill take-out port and maintain a state (engaged state) in which the cover member cannot slide, so that the state in which the refill take-out port is closed can be maintained more reliably. Further, by moving the lock member in the intersecting direction, the engagement state and the non-engagement state in which the cover member can slide with respect to the cartridge main body can be easily switched.

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

the one of the cartridge main body and the cover member includes a movement restricting portion (4 b), and the movement restricting portion (4 b) restricts movement of the lock member in the intersecting direction in the non-engaged state.

According to the configuration of (2) above, the movement restricting portion for restricting the movement of the lock member in the intersecting direction in the non-engaged state is provided, so that the lock member in the non-engaged state can be prevented from moving in the intersecting direction. Therefore, it is possible to suppress the case where the cover member is prevented from sliding with respect to the cartridge main body due to the unintentional movement of the lock member in the intersecting direction.

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

the locking member has a convex portion (5 a), the convex portion (5 a) protrudes in the direction from the other of the cartridge main body and the cover member toward the one direction in the intersecting direction,

one of the cartridge main body and the cover member has an engagement groove (4 a) in which the protruding portion can be engaged,

the engagement state is a state in which the protruding portion is engaged with the engagement groove, and the non-engagement state is a state in which the protruding portion is not engaged with the engagement groove. The engagement state may be a state in which the protruding portion is fitted into the engagement groove with a slight clearance therebetween.

According to the configuration of the above (3), the protruding portion is provided in the lock member, and the engaging groove capable of engaging with the protruding portion of the lock member is provided in the cartridge main body or the cover member. Therefore, by moving the lock member in the intersecting direction, the convex portion of the lock member can be engaged with the engagement groove of the cartridge main body or the cover member, or the convex portion can be disengaged from the engagement groove. As a result, as described in (1), the state in which the refill take-out port is closed can be maintained more reliably, and the engagement state and the non-engagement state of the lock member can be switched easily.

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

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

the movement restricting portion includes an abutment surface (4 l), and the abutment surface (4 l) extends in the sliding direction and can be abutted by a distal end surface (5 h) of the protruding portion in the non-engaged state.

According to the configuration of the above (4), the movement restricting portion has a surface (abutment surface) extending in the sliding direction of the cover member with respect to the cartridge main body, and the distal end surface of the protruding portion of the lock member can abut against the abutment surface. Therefore, the protrusion is brought into contact with the contact surface, so that the movement of the locking member in the intersecting direction in the non-engaged state can be prevented, and the movement of the cover member in the sliding direction with respect to the cartridge main body can be guided by the contact surface.

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

the cover member has the engaging groove in which the convex portion of the lock member can be engaged,

the cartridge body includes:

an abdomen side wall part (2 g) and a back side wall part (2 f) which extend between the bottom part (2 c) of the box main body and the replacement core extraction port and are opposite to each other; and

a pair of side wall parts (2 r, 2 s) connecting the abdominal side wall part and the back side wall part,

the locking member includes:

a base (5 b) that faces the side wall of the case main body; and

a pair of side plate portions (5 c, 5 d) which are respectively opposed to the pair of side wall portions of the cartridge main body,

one (5 d) of the pair of side plate portions includes the protruding portion protruding from the base portion in a direction from the bottom portion toward the replacement core extraction port.

According to the configuration of the above (5), by a simple configuration in which the side plate portion of the lock member facing one of the pair of side wall portions of the cartridge main body is provided with the protruding portion protruding from the base portion, the lock member is moved in the intersecting direction as described in the above (3), and the protruding portion of the lock member can be engaged with or disengaged from the engaging groove of the cartridge main body or the cover member.

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

the cover member includes:

an opening cover (4 d) capable of covering the refill extraction opening; and

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

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

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

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

the cover member includes a movement restricting portion (4 b), the movement restricting portion (4 b) being configured to restrict movement of the lock member in the intersecting direction in the non-engaged state,

the movement limiting part is provided with an abutting surface (4 l), the abutting surface (4 l) extends along the sliding direction and can be abutted by the front end surface (5 h) of the convex part in the non-clamping state,

the abutment surface comprises a second side surface (4 k) of the protruding portion of the back side cover portion.

According to the configuration of the above (7), the engagement groove can be formed by the first side surface of the protruding portion by a simple configuration in which the protruding portion is provided in the cover member, and in addition, the abutment surface of the movement restricting portion can be formed by the second side surface of the protruding portion.

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

the cartridge body is embedded in the locking member,

the cover member is movable in the sliding direction with respect to the cartridge body and the lock member.

According to the configuration of the above (8), since the cartridge body is fitted into the lock member, the cover member can be easily slid with respect to the cartridge body and the lock member by, for example, one-handed operation.

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

the refill cartridge for a mechanical pencil comprises:

a main protrusion (2 d) provided on one of the cartridge main body and the cover member; and

a main concave portion (4 c) provided on the other of the cartridge main body and the cover member and engaged with the main convex portion,

the cover member is movable relative to the cartridge body and the lock member so as to be rotatable about the main convex portion and the main concave portion.

According to the configuration of the above (9), the cover member is movable with respect to the cartridge main body and the lock member so as to be rotatable about the main concave portion and the main convex portion, and therefore, for example, by a one-hand operation, the cover member can be easily slid with respect to the cartridge main body and the lock member.

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

the cartridge body has the replacement core take-out port and a bottom portion respectively provided at both end portions of the cartridge body in a first direction,

the refill cartridge for an automatic pencil includes a rib (2 p), and the rib (2 p) protrudes from an inner wall surface (2 q) of the cartridge body and extends in the first direction.

According to the configuration of the above (10), since the rib protruding from the inner wall surface of the case main body and extending in the first direction (i.e., the direction in which the refill outlet and the bottom are connected) is provided, the plurality of refill for mechanical pencil housed in the case main body can be divided into the groups of a small number of refill by the rib. Therefore, in a state where the replacement core extraction port of the cartridge main body is opened, a small number of replacement cores are easily extracted.

(11) The replacement core box for the mechanical pencil according to at least one embodiment of the present invention is composed of at least a box main body having a bottomed tubular shape for housing a replacement core for the mechanical pencil and a cover member capable of sealing a replacement core take-out opening,

the case body forms a replacement core take-out opening at a position where a distance from an inner bottom of the case body to the replacement core take-out opening is shorter than a full length of the housed replacement core for the mechanical pencil, and an end portion of the replacement core for the mechanical pencil is exposed in an opened state,

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

a back side wall portion (back plane portion) which is slidable on a surface of the case main body which faces the back side cover portion (sliding back panel portion) of the cover member,

by sliding the side wall portion (abdomen portion) of the outside of the opposite side of the back side wall portion (back plane portion) of the cartridge main body against the outer surface of the back side cover portion (sliding back plane portion) of the cover member, the replacement core extraction port can be opened and closed,

wherein, the liquid crystal display device comprises a liquid crystal display device,

at least one of the cover member and the cartridge body is formed with a lock mechanism that is displaced to a position where the lock mechanism is brought into contact with the other engagement groove (lock hole portion) by operation, so that relative sliding between the cartridge body and the cover member is restricted, and a sealed state of the refill outlet is maintained.

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

the replacement core box for the mechanical pencil is provided with a locking mechanism locking unit which maintains the locking mechanism in an unlocked state when the replacement core extraction opening is opened and the replacement core for the mechanical pencil is exposed.

The embodiments of the present invention have been described above, but the present invention is not limited to the above embodiments, and includes modifications to the above embodiments and combinations of these modes as appropriate.

In the present specification, the expression "in a certain direction", "along a certain direction", "parallel", "orthogonal", "central", "concentric" or "coaxial" and the like means not only such an arrangement in a strict sense but also a state in which the relative displacement is caused by an angle or distance having a tolerance or a degree of obtaining the same function.

For example, the expressions "identical", "equal", and "homogeneous" and the like indicate states in which things are equal, and indicate not only exactly equal states but also states in which there are tolerances or differences in the degree to which the same function can be obtained.

In the present specification, the expression "shape such as a square shape and a cylindrical shape" means not only a shape such as a square shape and a cylindrical shape which are geometrically strict, but also a shape including a concave-convex portion, a chamfer portion, and the like within a range where the same effect can be obtained.

In the present specification, the expression "including", "including" or "having" one component is not an exclusive expression excluding the presence of other components.

Reference numerals illustrate:

1. replacement core box for propelling pencil

2. Box main body

2a replacement core removal port

2b groove

2c bottom

2d major lobe

2dd chamfer

2e inner bottom

2f back side wall (back plane)

2g abdomen side wall (abdomen)

2h fitting protrusion

2i display unit

2j top

2k opening limiting wall

2l step part

2m recess

2n recess

2o recess

2p rib

2q inner wall surface

2r side wall part

2s sidewall portion

2t protruding part

2u convex part

2v lobe

2w convex part

2x groove

2y thinning portion

2z recess

3. Replacement core for propelling pencil

4. Cover member

4a engagement groove (Lock hole portion)

4b movement restriction portion (wall for preventing lock)

4c main concave part (main combined hole)

4d opening cover (cover)

4e back side cover (sliding back panel)

4f opening restriction rib

4h protruding part

4i first side

4j side wall portion

4k second side

4l contact surface

4m tank

5. Locking member

5a convex part

5b base

5c side plate (side wall)

5d side plate (side wall)

5e bottom wall portion

5f fitting projection

5g core protrusion preventing wall

5h front end face

5i convex portion

5j protruding part

5k recess.

Claims (10)

1. A refill cartridge for a mechanical pencil, wherein,

the refill cartridge for a 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 lock member configured to switch between an engaged state in which the lock member is engaged with one of the cartridge body and the cover member and a non-engaged state in which the lock member is not engaged with the one of the cartridge body and the cover member by moving the lock 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,

in the engaged state, the cover member is configured to be maintained in a state of closing the refill outlet and in a state of being unable to slide relative to the cartridge body.

2. The replacement core box for a mechanical pencil according to claim 1, wherein,

the one of the cartridge main body and the cover member includes a movement restricting portion for restricting movement of the locking member in the intersecting direction in the non-engaged state.

3. The replacement core box for a mechanical pencil according to claim 1 or 2, wherein,

the locking member has a convex portion protruding in the direction from the other of the cartridge main body and the cover member toward the one in the intersecting direction,

one of the cartridge main body and the cover member has an engagement groove in which the protruding portion can be engaged,

The engagement state is a state in which the protruding portion is engaged with the engagement groove, and the non-engagement state is a state in which the protruding portion is not engaged with the engagement groove.

4. The replacement core box for a mechanical pencil according to claim 3, wherein,

the one of the cartridge main body and 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 restricting portion includes an abutment surface extending in the sliding direction, and is configured to allow an end surface of the protruding portion in the non-engaged state to abut against the abutment surface.

5. The replacement core box for a mechanical pencil according to claim 3 or 4, wherein,

the cover member has the engaging groove in which the convex portion of the lock member can be engaged,

the cartridge body includes:

a ventral wall portion and a dorsal wall portion which extend between the bottom of the cartridge main body and the refill take-out port, respectively, and are opposed to each other; and

a pair of side wall portions connecting the abdominal side wall portion and the back side wall portion,

the locking member includes:

a base portion facing the abdominal wall portion of the cartridge body; and

A pair of side plate portions which are respectively opposed to the pair of side wall portions of the cartridge main body,

one of the pair of side plate portions includes the convex portion protruding from the base portion in a direction from the bottom portion toward the replacement core extraction port.

6. The replacement core box for a mechanical pencil of claim 5, wherein,

the cover member includes:

an opening cover section capable of covering the replacement core take-out opening; and

a back side cover portion facing the back side wall portion of the cartridge main body,

the engagement groove is formed at least partially by a first side surface of a protruding portion protruding from a surface of the back side cover portion facing the back side wall portion.

7. The replacement core box for a mechanical pencil of claim 6, wherein,

the cover member includes a movement restricting portion for restricting movement of the lock member in the intersecting direction in the non-engaged state,

the movement restricting portion has an abutment surface extending in the sliding direction and capable of abutting against a distal end surface of the protruding portion in the non-engaged state,

the abutment surface includes a second side surface of the protruding portion of the back-side cover portion.

8. The replacement core box for an automatic pencil according to any one of claims 1 to 7, wherein,

the cartridge body is embedded in the locking member,

the cover member is movable in the sliding direction with respect to the cartridge body and the lock member.

9. The replacement core box for a mechanical pencil of claim 8, wherein,

the refill cartridge for a mechanical pencil comprises:

a main protrusion provided on one of the cartridge main body and the cover member; and

a main concave portion provided on the other of the cartridge main body and the cover member, and engaged with the main convex portion,

the cover member is movable relative to the cartridge body and the lock member so as to be rotatable about the main convex portion and the main concave portion.

10. The replacement core box for an automatic pencil according to any one of claims 1 to 9, wherein,

the cartridge body has the replacement core take-out port and a bottom portion respectively provided at both end portions of the cartridge body in a first direction,

the replacement core box for the mechanical pencil is provided with a rib protruding from the inner wall surface of the box main body and extending along the first direction.