JP7709833B2 - Replacement cartridge case - Google Patents

Description

This invention relates to a replacement lead case that contains writing leads used in mechanical pencils and the like.

2. Description of the Related Art Refill lead cases for accommodating writing leads used in mechanical pencils and the like are often composed of two parts: a case body with a bottom and a lid that is removably attached to the opening of the case body.
For example, the refill lead case disclosed in Patent Document 1 is composed of two parts: a case body made of a resin material and a lid body also made of a resin material, and the lid body can be slid in a direction perpendicular to the longitudinal direction of the refill lead case to open the opening in the case body (the refill lead removal port).
In this case, the sliding position of the lid body relative to the case opening can be set in two stages, for example, allowing the user to set the opening to a size suitable for removing the replacement ink cartridge.

In addition, the replacement lead case disclosed in Patent Document 2 is composed of two parts: a case body, also made of a resin material, and a lid, also made of a resin material, and the lid is removably attached to the opening of the bottomed case body.
The opening (refill outlet) formed in the case body is cut at an angle on the front side, allowing the user to pick up the refill with their fingertips, resulting in an easy-to-use refill case.

JP 2010-30136 A JP 2010-173248 A

In the refill lead cases disclosed in the above-mentioned patent documents, the refill lead removal opening must be opened and the case body must be tilted so that the removal opening faces slightly downward.The refill lead then moves out of the case body to the removal opening due to its own gravity, allowing the refill lead to be removed.
This requires delicate manipulation such as adjusting the inclination of the case body while rocking the case body. This can cause more refills than necessary, or even all of the refills inside the case body, to fly out of the outlet and scatter on the floor, forcing the user to pick up the refills that have been scattered on the floor.

This invention was made with an eye on the above-mentioned problems with conventional refill cases, and aims to provide a refill case that allows the user to easily remove the refill needed without having to turn the refill removal opening downward, and that solves the problems with conventional refill cases, such as a large number of refills popping out of the case body at the same time.

The refill cartridge case of this invention, which was made to solve the above-mentioned problems, has a cross section perpendicular to the longitudinal direction formed into a U-shape by the back panel and left and right leg panels, and the inner space surrounded by the U-shape is made into a refill cartridge storage chamber, and the cross section perpendicular to the longitudinal direction is formed into a U-shape by the front panel and left and right outer leg panels, with the refill cartridge storage chamber on the case main body being formed with a lid body part on the tip side and a case part on the rear side via a bendable thin-walled part provided near the longitudinal tip of the back panel, and the front panel and left and right outer leg panels cover the refill cartridge storage chamber on the case main body side, and the leg panels of the case main body are positioned inside the outer leg panels, The case body is provided with a cover member that supports the case body so that it can slide in the longitudinal direction, and a guide body is formed along the longitudinal direction on at least one of the leg plates of the lid body and the outer leg plate of the cover member that covers the leg plate, and a sliding body that contacts the guide body is formed on the other of the leg plates. The case body is provided with an operating part that protrudes outward from the leg plate, and a sliding action that extends the lid body of the case body from the tip of the cover member is realized by moving the operating part relative to the longitudinal direction of the cover member.

In this case, in a preferred embodiment, an inner lid is further provided that is attached to the left and right leg plates of the case body and covers the refill cartridge chamber on the front side, and the inner surface of the rear plate of the case body facing the refill cartridge chamber and the inner surface of the inner lid facing the refill cartridge chamber are each provided with protrusions to avoid surface contact with the stored refill, and the inner lid is formed with a pair of protective plates that are positioned on the inside of the left and right leg plates from the thin portion of the case body to the lid body, and is configured to provide a rotational action that warps the lid body to the rear side via the thin portion when the sliding body slides against the guide body.

The guide body is formed on the outside of the leg plate of the lid body, protruding in the shape of a rail extending in the longitudinal direction, and the sliding body is formed to protrude so as to contact the guide body at the tip of the cover member where the lid body is advanced by the sliding action. The guide body is formed with a parallel region parallel to the back plate at the tip side, and a sloped region that moves away from the back plate toward the thin-walled portion next to the parallel region. This allows the lid body to be advanced from the tip of the cover member without rotating the lid body in the first half of the sliding action, and allows the lid body to bend toward the back side in the second half of the sliding action.

According to the refill lead case of the present invention described above, the case body, which forms the lid and case parts via a bendable thin section, is slidably mounted inside the cover member to form the refill lead case. A guide body and a sliding body that can slide against each other by sliding motion are provided on either the lid or cover member side, and the other side, so that a rotational motion is imparted that warps the lid of the case body toward the rear side from the tip of the cover member as the slide motion occurs.

Therefore, by rotating the cover body by the thin portion, the tip of the refill is exposed from the case, so that the refill can be easily removed.
Therefore, it is possible to provide a refill case that allows the refill to be removed without having to turn the refill removal opening downward, and that solves the problem with conventional refill cases, such as a large number of refills popping out simultaneously from the case body.

In this case, the case body is provided with an operating part that protrudes outward from the leg plate, and by moving the operating part relative to the longitudinal direction of the cover member, a sliding action can be performed to extend the lid part of the case body from the tip of the cover member. Therefore, by using the operating part, it is possible to easily achieve the sliding action of the case body side relative to the cover member, and a refill case with excellent operability can be provided.

Furthermore, an inner lid that covers the front side of the refill cartridge chamber is attached to the case body, and protrusions are formed on the inner surface of the case body and the inner lid to avoid surface contact with the refill cartridge, thereby effectively solving the problem of the refill cartridge sticking to the inside of the refill cartridge chamber due to static electricity.
With this, the case body and the inner lid are formed from two parts, so that the problem of damaging the opposing protrusions due to forcible removal during demolding can be avoided, compared to when protrusions are formed on opposing inner surfaces from a single part.

In addition, the inner lid is configured with a pair of protective plates that are positioned from the thin section of the case body to the lid section, and are formed on the inside of the left and right leg plates of the case body, respectively. This effectively solves the problem of the replacement lead getting caught between the leg plate on the lid section side that is bent toward the rear side and the leg plate on the case section side when the lid section that has been extended by the sliding action is returned to the inside of the cover member.

Other advantages of the present invention will be explained in the section on embodiments of the invention together with the description of the embodiments.

FIG. 2 is a front view of the refill cartridge according to the present invention. FIG. 3 is a cross-sectional view taken along line aa in FIG. 2 in the direction of the arrows. 3 is a cross-sectional view taken along line bb in FIG. 2, viewed in the direction of the arrows. 13 is a rear view of the cover portion when viewed from the case body side with the cover portion partially extended. FIG. FIG. 6 is a cross-sectional view taken along line cc in FIG. 5, viewed in the direction of the arrows. 8 is a cross-sectional view showing a state in which the cover body is further fully opened from the state shown in FIG. 7 . 11 is a perspective view of the lid body fully opened as viewed from the cover member side. FIG. FIG. 11 is a perspective view of the same with a replacement lead stored therein, as viewed from the cover member side. FIG. 4 is a front view showing the individual configuration of the case body. There is also a bottom view. FIG. 4 is a perspective view showing the individual configuration of the inner lid. This is also a front view. 15 is a cross-sectional view taken along line dd in FIG. 14, as viewed in the direction of the arrows. FIG. 4 is a perspective view showing a single component configuration of the cover member. This is also a front view. 18 is a cross-sectional view taken along line ee in FIG. 17, as viewed in the direction of the arrows.

The refill lead case according to the present invention will be described with reference to the drawings.
1 and 2 show the overall structure of the refill case as viewed from the front side of a cover member 1 and as viewed from the back side of a case body 2. FIG.
In this embodiment, the cover member 1 and the case body 2 are molded from a resin material, and an inner lid 3, which is attached to the case body 2 and covered by the cover member 1, which will be described later, is also molded from a resin material. The case body 2 and the inner lid 3 are attached to the cover member 1 so as to be slidable along the longitudinal direction, thereby forming a refill case.
In the following description, for convenience of explanation, one side in the longitudinal direction where a lid body portion 2e of the case main body 2 described later is extended from the cover member 1 will be referred to as the front end, and the other side will be referred to as the rear end.

11 to 18 show the individual components of the case body 2, inner lid 3 and cover member 1, and the detailed configuration of each component will be described first with reference to the drawings showing these individual components.
Figures 11 and 12 show the case body 2, which is formed by a back panel 2a and left and right leg panels 2b, with a cross section perpendicular to the longitudinal direction being U-shaped, and a replacement lead storage chamber 2c is formed in the inner space surrounded by the U-shape.

A bendable thin portion 2d is provided near the longitudinal end of the back panel 2a, and a lid portion 2e is formed on the end side, and a case portion 2f is formed on the rear side.
A closing plate 2g is formed by connecting the left and right leg plates 2b to the cover body portion 2e to close the tip of the cover body portion 2e, and a rear closing plate 2h is formed by connecting the left and right leg plates 2b to the rear of the case portion 2f to close the rear of the case portion 2f.

A pair of guide bodies 2j are formed on the outer sides of the left and right legs 2b of the cover body 2e, protruding in the form of rails along the longitudinal direction. As shown in Fig. 12, the guide body 2j has a parallel region 2j1 parallel to the back plate 2a at the tip end side of the cover body 2e, and an inclined region 2j2 extending away from the back plate 2a toward the thin portion 2d.
In addition, the parallel region 2j1 and the inclined region 2j2 of this guide body 2j come into sliding contact with the sliding body 1g provided on the cover member 1 side as the lid body portion 2e of the case main body 2 slides out from the tip end of the cover member 1, which will be described later, and act to impart a rotational motion to the lid body portion 2e to bend it toward the rear side via the thin-walled portion 2d.

The left and right leg plates 2b of the case portion 2f are formed with fitting recesses 2k for attaching an inner lid 3 (described later) at approximately the center in the longitudinal direction and near the lid body portion 2e.
Furthermore, a pair of slide projections 2m are formed on both outer sides of the left and right leg plates 2b of the case portion 2f along the longitudinal direction of the case body 2. The slide projections 2m engage with case support portions 1d (described later) provided on the cover member 1, and function to support the case body 2 so as to be slidable in the longitudinal direction.

In addition, a rib-like click protrusion 2n is formed near the rear of the left and right leg plates 2b of the case portion 2f, and when the cover member 1 slides relative to the case body 2, this click protrusion 2n overcomes the click body 1f formed on the case body 2 side, thereby generating a click action. Therefore, this click action also occurs when the case body 2 is returned into the cover member 1.
Furthermore, on the inner surface of the back panel 2a of the case portion 2f on the side of the refill lead storage chamber 2c, multiple protrusions 2p that avoid surface contact with the stored refill lead L are formed perpendicular to the longitudinal direction of the case body 2. This serves to prevent the refill lead L from being attracted by static electricity and sticking to the inner surface of the refill lead storage chamber 2c of the case body 2 made of a resin material.

Further, a pair of operating portions 2t are integrally formed with the case body 2 near the thin portions 2d of the left and right leg plates 2b of the case portion 2f, the operating portions 2t protruding outwardly of the leg plates 2b.
The pair of operating portions 2t facilitate a sliding operation for moving the case body 2 relative to the cover member 1 in a state in which the case body 2 is slidably attached to the cover member 1.
That is, by moving the operating portion 2t relative to the longitudinal direction of the cover member 1, a sliding operation for extending the lid portion 2e of the case main body 2 from the tip end of the cover member 1 can be realized.

2, a recess 2q is formed along the longitudinal direction of the rear half of the case body 2, and a large number of linear projections 2r are formed within the recess 2q and arranged in a direction perpendicular to the longitudinal direction of the case body 2. An arrow mark 2s, preferably in a triangular shape, is formed on the tip side of the recess 2q.
The arrow mark 2s indicates the sliding direction of the case body 2 relative to the cover member 1, and the projection group 2r functions as a slip prevention for the fingertips during the sliding operation.

13 to 15 show the individual configuration of the inner lid 3 which is attached to the left and right leg plates 2b of the case body 2 and covers the replacement lead storage chamber 2c on the front side.
The inner lid 3 is formed in a flat shape and has fitting protrusions 3a formed in the longitudinal center and near the tip. The fitting protrusions 3a are fitted into the inner lid fitting recesses 2k formed in the case body 2, and are attached so as to cover the front side of the replacement lead storage chamber 2c of the case body 2.

At this time, a pair of protective plates 3b formed at the tip of the inner lid 3 are positioned inside the left and right leg plates 2b of the case body 2, extending from the thin portion 2d of the case body 2 to the lid portion 2e.
This effectively solves the problem of the replacement lead L getting caught between the leg plate 2b on the side of the lid body part 2e, which is curved toward the rear side, and the leg plate 2b on the side of the case part 2f, when the lid body part 2e, which has been extended by a sliding action, is returned into the cover member 1, as described in the effect of the invention.

In addition, at the rear of the inner lid 3, a pair of spacers 3c formed protruding from the inner surface of the inner lid 3 act to maintain a constant distance between the rear of the inner lid 3 and the back panel 2a of the case body 2 .
Furthermore, on the inner surface of the inner lid 3, a number of protrusions 3d are formed in a direction perpendicular to the longitudinal direction of the inner lid 3. This prevents the resin inner lid 3, which covers the front surface of the refill cartridge chamber 2c of the case portion 2f, from coming into surface contact with the refill cartridge L, and prevents the refill cartridge L from being attracted by static electricity and sticking to the inner lid 3.

16 to 18 show the single-item configuration of the cover member 1, which is formed with a front plate 1a and left and right outer leg plates 1b such that the cross section perpendicular to the longitudinal direction is U-shaped, and a rear leg plate 1c that connects the left and right outer leg plates 1b is formed at the rear of the cover member 1. The front plate 1a covers the replacement lead storage chamber 2c of the case body 2 , and the left and right leg plates 2b of the case body 2 are positioned inside the left and right outer leg plates 1b to support the case body 2 so that it can slide in the longitudinal direction.
The cover portion 2e of the case body 2 is configured to be extended from the tip end side of the cover member 1 by a sliding movement.

In addition, near the tip of the left and right outer leg plates 1b of the cover member 1, guide recesses 1m are formed along the left and right outer leg plates 1b by cutting out a part of each of the outer leg plates 1b. When the case body 2 is attached to the cover member 1, a pair of operating parts 2t formed on the case body 2 are positioned in these guide recesses 1m, and these operating parts 2t are arranged to be slidable in the guide recesses 1m.

In addition, case support parts 1d are formed along the edges of the left and right outer leg plates 1b at two locations in the longitudinal direction, facing each other on the inside, and these slidably support the left and right slide protrusions 2m formed on the leg plates 2b of the case body 2, thereby slidably supporting the case body 2 and also functioning to prevent the case body 2 from coming off the cover member 1. A pair of slide protrusions 1e are formed facing each other on the inside near the rear of the left and right outer leg plates 1b. These are passed forward by rib-shaped click protrusions 2n formed on the case body 2, generating a click action when the case body 2 is opened.
Furthermore, a pair of click bodies 1f are formed facing each other on the inside of the rear side of the outer leg plate 1b, and when the case main body 2 is slid, these click bodies 1f are overcome rearward by the rib-shaped click protrusion 2n formed on the case main body 2, generating a click action.

On the other hand, sliding bodies 1g are provided facing each other within the outer leg plate 1b at the tip of the cover member 1. When the case body 2 slides and the lid body part 2e protrudes from the tip of the cover member 1, the pair of sliding bodies 1g come into contact with the parallel region 2j1 and the inclined region 2j2 of the guide body 2j formed on the lid body part 2e, and function to warp the lid body part 2e towards the rear side. Details of this operation will be explained later with reference to Figures 4 to 8, etc.

Stoppers 1h are provided facing each other slightly toward the rear of the sliding body 1g at the tip of the cover member 1. When the cover body 2e is fully opened by sliding the case body 2, the tips of the slide projections 2m formed on the leg plates 2b of the case part 2f come into contact with the pair of stoppers 1h (see FIG. 8), thereby stopping the sliding movement of the case body 2.
In addition, the pair of stoppers 1h also play a role in returning the cover body 2e, which is in a state of being curved toward the rear side by contacting the return guide portion 2j3 of the guide body 2j, to a state along the longitudinal direction of the case body 2 during the sliding operation of pulling the case body 2 back into the cover member 1. This operation will be described later with reference to Figures 4 to 8, etc.

Furthermore, a circular recess 1k is formed on the surface of the front plate 1a of the cover member 1, approximately in the center of the cover member 1, as shown in FIG.
When sliding the case body 2 relative to the cover member 1, this recess 1k and the linear protrusion group 2r on the case body 2 can be used to smoothly perform the sliding action by, for example, placing the thumb against this recess 1k and the index finger against the linear protrusion group 2r on the case body 2 and sliding them relative to each other.
In this sliding operation, the case body 2 can be slid along the longitudinal direction of the cover member 1 by utilizing the pair of operating portions 2t provided on the case body 2 and protruding on both sides of the cover member 1.

As shown in Figures 1 and 2, when the case body 2 is housed in the cover member 1, when the front panel 1a of the cover member 1 is viewed from the front (as shown in Figure 1), the closure plate 2g of the lid body portion 2e formed at the tip of the case body 2 can be seen along the tip recess 1j formed at the tip of the cover member 1.
According to this, by matching the color of the resin used to mold the case body 2 to a color that is almost the same as the lead color of the refill L stored in this refill case, the user can identify the lead color stored in the refill case by the coloring of the closure plate 2g.

In this case, the color density of the resin used to mold the case body 2 can be varied in stages according to the hardness of the lead L, allowing the user to distinguish between the colors by the density of the closure plate 2g. The colors mentioned here are within 10 hues and within 3 in brightness and saturation in the Munsell color system. The density is measured on the surface of the part using a densitometer (Sakura DENSITO METER PDA65, Konishiroku Photo Industry Co., Ltd.). The hardness of the lead is measured according to JIS S
The writing hardness is measured according to the method specified in 6005:2007.

3 to 10 mainly explain the opening and closing operation of the lid portion 2e when the case body 2 is slid relative to the cover member 1. FIG.
Figure 3 is a central cross-sectional view (cross-sectional view taken along line a-a in Figure 2) of the case body 2 with the inner lid 3 attached being housed in the cover member 1, and Figure 4 is a cross-sectional view (cross-sectional view taken along line b-b in Figure 2) along one of the guide bodies 2j formed on the lid body portion 2e at this time.
In the state shown in Figure 4 in which the case body 2 is housed in the cover member 1, the stopper 1h of the cover member 1 abuts against the return guide portion 2j3 of the guide body 2j, and therefore the lid body portion 2e maintains a closed state along the longitudinal direction of the cover member 1.

5 and 6 show a state in which the lid portion 2e of the case main body 2 is protruded from the tip of the cover member 1 by about half the length of the lid portion 2e, and FIG. 7 shows the state of the lid portion 2e at this time. That is, in the initial stage (first half) of protruding the lid portion 2e from the tip of the cover member 1, the sliding body 1g on the cover member 1 side slides in contact with the parallel region 2j1 of the guide body 2j formed on the lid portion 2e. For this reason, the lid portion 2e is extended from the tip of the cover member 1 without being rotated.
In the state shown in FIG. 7, the sliding body 1g is slightly in contact with the inclined region 2j2 of the guide body 2j, and therefore the cover portion 2e is slightly warped toward the rear side via the thin portion 2d.

As mentioned above, in the initial stage of protruding the lid portion 2e, the lid portion 2e is extended from the tip of the cover member 1 without being rotated, so that even if the refill case is inadvertently tilted, the refill L inside the case can be prevented from popping out and falling.

Fig. 8 shows the state where the lid body 2e is fully opened by further extending it from the cover member 1. In the latter half of the extending operation of the lid body 2e from the state shown in Fig. 7 to the state shown in Fig. 8, as the cover member 1 is extended, the sliding body 1g slides along the inclined region 2j2 of the guide body 2j, so that the lid body 2e is suddenly rotated to bend toward the rear side via the thin portion 2d.
In the state shown in Figure 8 where the cover portion 2e is fully open, the tip of a slide protrusion 2m provided along the longitudinal direction of the case body 2 abuts against a stopper 1h, thereby stopping the extension of the cover portion 2e.

9 and 10 show the external configuration of the refill lead case with the cover body portion 2e in a fully open state, and FIG. 10 shows the case with a refill lead L accommodated therein.
When the cover body 2e is in the fully open state, as shown in FIG. 8, the rear part of the inclined region 2j2 of the guide body 2j contacts the sliding body 1g. In this state, the cover body 2e can be further warped as desired by using a fingertip or the like via the thin-walled portion 2d.
Therefore, the required number of refills L can be accurately taken out from the refill case.

On the other hand, when the lid body 2e is slid back into the cover member 1 from the fully open state shown in Figures 8 to 10, as shown in Figure 7, for example, the return guide portion 2j3 of the guide body 2j slides against the stopper 1h on the cover member 1 side. As a result, the lid body 2e, which is warped toward the back side, is accommodated in the cover member 1 while being returned to a state along the longitudinal direction of the case main body 2.
In the state shown in Figure 4 where the lid body portion 2e is completely housed within the cover member 1, the return guide portion 2j3 of the guide body 2j abuts against the stopper 1h on the cover member 1 side, and therefore the lid body portion 2e remains in the closed state.

Furthermore, when the lid body portion 2e is returned from its fully open state into the cover member 1, some of the replacement lead L stored in the case may become pinched between the lid body portion 2e and each leg plate 2b provided on the case portion 2f via the thin-walled portion 2d, causing problems such as breaking the replacement lead L.
However, as shown in Figure 9, a pair of protective plates 3b formed at the tip of the inner lid 3 are positioned inside each leg plate 2b of the lid body portion 2e and the case portion 2f, thereby avoiding the problem of breakage of the replacement lead L mentioned above.

In the embodiment of the replacement lead case described above, the case body 2 is slidably attached to the cover member 1 with the inner lid 3 attached to the case body 2, but the inner lid 3 is not necessarily required and can be omitted.
Furthermore, when using the inner lid 3, the inner lid 3 can be connected to the rear side of the case body 2 via a thin connecting band (not shown) and molded as a single unit. Then, by folding back the thin connecting band and assembling the inner lid 3 to the case body 2, it is possible to reduce the number of parts, which makes it easier to manage the manufacturing process and allows for a replacement lead case that can be manufactured at a lower cost.

1 Cover member 1a Front plate 1b Outer leg plate 1d Case support portion 1g Slider 1h Stopper 1k Recess 1m Guide recess 2 Case body 2a Back plate 2b Leg plate 2c Replacement lead storage chamber 2d Thin portion 2e Lid portion 2f Case portion 2g Closure plate 2j Guide body 2j1 Parallel region 2j2 Inclined region 2j3 Return guide portion 2m Slide projection 2p Projection (protrusion for preventing lead from sticking)
2r Projection group 2t Operation section 3 Inner lid 3b Protective plate 3d Projection (sticking prevention projection)
L Replacement Refill

Claims (2)

The cross section perpendicular to the longitudinal direction is formed into a U-shape by the back plate and the left and right leg plates, and the inner space surrounded by the U-shape is used as a replacement lead storage chamber, and a case body is formed with a lid body part on the tip side and a case part on the rear side via a bendable thin part provided near the tip end of the back plate in the longitudinal direction;
The case has a front plate and left and right outer leg plates that form a U-shape in cross section perpendicular to the longitudinal direction, the front plate covers the replacement lead storage chamber on the case body side, and the leg plates of the case body are positioned inside the outer leg plates to support the case body so that it can slide in the longitudinal direction.
A guide body is formed along the longitudinal direction on at least one of the leg plates of the lid body portion and the outer leg plate on the cover member side covering the leg plate, and a sliding body is formed in contact with the guide body on the other of the leg plates,
The case body is provided with an operating part that protrudes outward from the leg plate, and a sliding action is realized to extend the lid part of the case body from the tip of the cover member by moving the operating part relative to the longitudinal direction of the cover member ,
This refill lead case is further provided with an inner lid attached to the left and right leg plates of the case body and covering the front side of the refill lead chamber, and the inner surface of the back panel of the case body facing the refill lead chamber and the inner surface of the inner lid facing the refill lead chamber are each provided with protrusions to avoid surface contact with the stored refill, and the inner lid is formed with a pair of protective plates positioned respectively inside the left and right leg plates from the thin-walled portion of the case body to the lid body, and the sliding contact of the sliding body against the guide body provides a rotational action that warps the lid body towards the rear side via the thin-walled portion . The cross section perpendicular to the longitudinal direction is formed into a U-shape by the back plate and the left and right leg plates, and the inner space surrounded by the U-shape is used as a replacement lead storage chamber, and a case body is formed with a lid body part on the tip side and a case part on the rear side via a bendable thin part provided near the tip end of the back plate in the longitudinal direction;
The case has a front plate and left and right outer leg plates that form a U-shape in cross section perpendicular to the longitudinal direction, the front plate covers the replacement lead storage chamber on the case body side, and the leg plates of the case body are positioned inside the outer leg plates to support the case body so that it can slide in the longitudinal direction.
A guide body is formed along the longitudinal direction on at least one of the leg plates of the lid body portion and the outer leg plate on the cover member side covering the leg plate, and a sliding body is formed in contact with the guide body on the other of the leg plates,
The case body is provided with an operating part that protrudes outward from the leg plate, and a sliding action is realized to extend the lid part of the case body from the tip of the cover member by moving the operating part relative to the longitudinal direction of the cover member ,
The guide body is formed on the outer side of the leg plate of the cover body portion in a rail-like protruding state extending along the longitudinal direction,
The sliding body is formed to protrude so as to contact the guide body at a tip end of the cover member from which the lid body portion is extended by the sliding operation,
A parallel region parallel to the rear plate is formed on the guide body at the tip side, and an inclined region that is inclined away from the rear plate toward the thin-walled portion following the parallel region is formed, so that in the first half of the sliding movement, the lid body portion is extended from the tip of the cover member without being rotated, and in the second half of the sliding movement, the lid body portion is rotated to bend toward the rear side, resulting in a replacement ink cartridge case.