JP6940355B2 - Replacement core case - Google Patents

Description

The present invention relates to a replacement core case for storing a rod-shaped core, and more particularly to a replacement core case in which the number of cores to be discharged at one time can be changed.

Conventionally, as this type of replacement lead case, for example, as disclosed in Patent Document 1, one lead can be passed by rotating the lid in one direction, or a plurality of lead can be passed by rotating in the other direction. A replacement core case for a mechanical pencil in which a core outlet is formed is known.

However, in the case of a replacement core as in Patent Document 1, the rotation angle until the lid is rotated to form the core outlet is large, and in particular, the state is adjusted to the core outlet through which only one core can pass. Since it is necessary to rotate 180 degrees to match the core outlet through which a plurality of cores can pass, it is not possible to rotate the core in one operation, and the rotation operation is troublesome.
Further, in the structure of Patent Document 1, since the positions of the core outlet through which only one core passes and the core outlet through which a plurality of cores pass at the same time are different, the rotation operation of the lid is mistaken and the core on the side not intended by the user is used. If the outlet is opened, the core discharged from the core outlet cannot be grasped, and the core may fall and be damaged.

Japanese Unexamined Patent Publication No. 2008-073859

The present invention has been made in view of the above problems, and a replacement core case that can adjust the number of cores that can be ejected at the same time by rotating the lid and reduces the rotation angle required for rotation. The purpose was to provide that.

The present invention
"1. A case body capable of storing a rod-shaped core inside and a lid body rotatably locked to the case body are provided.
In a replacement core case in which a core passage communicating the inside and the outside of the case body is formed by rotating the lid body.
A lid fixing member is attached to the opening formed in the upper part of the case body, and a communication hole through which the core can be inserted is formed in the lid fixing member.
The lid body is formed with a small passage through which the core can pass and a large passage having a width larger than that of the small passage, and is configured to intersect the small passage and the large passage, and the lid. The body is rotatably locked to the lid fixing member and
By rotating the lid body with respect to the case body, when the communication hole of the lid fixing member and the edge passage of the lid body match, one or a plurality of cores can pass through at the same time. When the core passage is formed and the communication hole of the lid fixing member and the large passage of the lid match, a second core passage through which more cores than the first core passage can pass at the same time is formed. A replacement core case featuring.
2. The lid has a plurality of hooked portions formed along the outer peripheral surface, and has a plurality of hooked portions.
The lid fixing member has a base portion having the communication hole, a support arm formed so as to project upward from the base portion, and a locking portion for rotatably locking the lid body, and above the base portion. It is provided with a hooking arm which is formed so as to project toward the tip and has a hooking portion at the tip.
The hook arm is formed so as to be tiltable with respect to the base portion.
The replacement core case according to the above item 1, wherein the hooking portion of the hooking arm and the hooked portion of the lid body are configured to be hooked by rotating the lid body.
3. 3. A locking portion is formed on the support arm of the lid fixing member, and a locking portion is formed.
The lid body includes a locked portion that rotatably locks the locking portion, and a plurality of stopper portions that are formed so as to be in contact with the support arm.
The replacement core according to item 1 or 2, wherein when the lid body is rotated, the stopper portion and the support arm come into contact with each other to limit the rotation range of the lid body. Case.
4. The replacement core case according to any one of the above items 1 to 3, wherein a convex curved chamfered portion is provided at an intersection where the small passage and the large passage intersect.
5. The replacement core case according to any one of the above items 1 to 4, wherein an inclined portion inclined toward the connecting hole is provided at the lower end portion of the lid fixing member. ".

According to the present invention, by forming two passages for passing the core provided in the lid, that is, the small passage and the large passage intersecting each other, the lid and the lid fixing member are formed when the lid is rotated. The rotation angle required for switching to the first core passage and the second core passage formed between the two can be reduced. Therefore, the core passage can be switched by one rotation operation.
Further, when the lid body is rotated to form the core passage, the first core passage and the second core passage are formed at substantially the same position, so that the portion where the core is discharged can be specified. It is possible to reduce the risk of dropping the core discharged from.

The rotation angle of the lid required for switching from the first core passage to the second core passage is preferably 90 degrees or less so that it can be operated by one rotation operation with a finger, and is formed to be 60 degrees or less. Is more preferable.
In addition, by reducing the rotation angle required for the rotation operation of the lid, the area where the lid is exposed from the case body can be reduced, so when storing the replacement core case, it is stored with fingers. It is possible to prevent other articles from hitting the lid and unintentionally rotating the lid to open the core passage and accidentally ejecting the core.

Next, it is preferable that the hooking arm formed on the lid fixing member and the lid body are configured to be hookable so that the lid body does not rotate carelessly. By maintaining the state in which the one-core passage and the second core passage are formed, it is possible to prevent the lid from rotating against the user's will and blocking the core passage when the core is discharged, and the core passes through. By maintaining the state in which the passage is not formed, it is possible to prevent the core from being ejected during carrying.
Further, the means for locking the hooking portion of the hooking arm and the hooked portion of the lid is not particularly limited, but for example, a convex portion formed in a convex shape is formed on the hooking portion to be covered. A concave concave portion may be formed in the hook portion, and the hook arm and the lid may be hooked by fitting the convex portion into the concave portion, and the concave portion formed in the concave portion is formed in the hook portion. Then, a convex convex portion may be formed in the locked portion, and the hooking arm and the lid may be hooked by fitting the convex portion into the concave portion.

It should be noted that the rotational torque required to rotate the lid body from the state where the hooking arm of the lid fixing member and the lid body are hooked and release the hooked state rotates against the intention of the user during storage. It is necessary to prevent this from happening and to make it easy to rotate with a finger. Therefore, it is preferable to configure it to 0.004 N ・ m or more and 0.040 N ・ m or less, and 0.007 N ・ m or more and 0.018 N. -It is more preferable to configure it to m or less.

Further, it is preferable to provide a plurality of stopper portions protruding outward on the surface portion of the lid body, and the stopper body and the support arm can be brought into contact with each other when the lid body is rotated so that the lid body can be rotated. The range can be regulated and it can be prevented from rotating more than necessary.

It is preferable that at least when the stopper portion and the support arm come into contact with each other, the hooking portion of the hooking arm and the hooked portion of the lid are in a hooked state. In this case, the stopper is used. Since the hooking arm and the lid are hooked at the same time as the rotation of the lid is stopped, the user does not have to concentrate on hooking the hooking arm and the lid, and the hooking is further stopped. Since the state can be maintained, the operation of discharging the core from the core passage becomes easy.

Further, it is preferable to provide a convex curved chamfered portion at the intersection of the small passage and the large passage of the lid, and in this case, the edge portion formed at the intersection of the small passage and the large passage is eliminated. This makes it possible to prevent the core from being caught at the intersection when the core passes through the small passage or the large passage.

Further, it is preferable to form an inclined portion inclined toward the connecting hole at the lower end portion of the lid fixing member, and when the core is discharged, the replacement core case is generally gripped upside down, so that the inclined portion is formed. As a result, the cores gather in the connecting holes, and the cores are guided to the connecting holes.

Further, it is preferable that the entrance portion of the small passageway connected to the connecting hole of the lid fixing member is formed by gradually expanding in accordance with the connecting hole, whereby the core passing through the connecting hole enters the small small passageway. It is possible to prevent it from being caught in the part.

Further, the large passage and the small passage may be formed by changing the color tone from the other parts of the lid. In this case, by changing the color tone, is the core passage formed when the lid is rotated? Whether or not it can be visually confirmed from the outside.

Further, it is preferable to configure the hooking arm so as to generate a hooking sound when the hooking portion of the hooking arm and the hooked portion of the lid are locked. It can be recognized not only by sound but also by sound.
The means for generating the hooking sound is not particularly limited, but for example, a cavity may be provided inside the lid to reverberate the hooking sound, and the hooking sound may be increased to make it easier to hear. ..

Further, it is preferable to provide a non-slip on the side surface of the lid so that the lid does not slip when rotated by a finger. Specifically, for example, a concave portion may be provided on the side surface of the lid to prevent slipping, or a protrusion may be provided on the side surface to prevent slipping. The lid may be made of synthetic rubber, thermoplastic elastomer, silicon, or the like. It may be made hard to slip by forming it with a flexible material having rubber elasticity.

As the core to be stored in the replacement core case of the present invention, a rod-shaped core having a maximum width (maximum diameter) of 0.1 mm to 2.0 mm can be used.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a replacement core case capable of adjusting the number of cores that can be ejected at the same time by rotating the lid and reducing the rotation angle required for rotation.

It is a side view of the replacement core case of Example 1. FIG. It is a vertical cross-sectional view of the replacement core case of FIG. It is an enlarged vertical sectional view which enlarged the main part of the replacement core case of FIG. It is an enlarged side view of the lid fixing member. FIG. 4 is a cross-sectional view taken along the line AA in FIG. It is an enlarged side view of a lid body. It is a vertical cross-sectional view which shows the state which formed the first core passage by rotating the lid body from the state of FIG. It is explanatory drawing for demonstrating the operation of ejecting a core from the state of FIG. FIG. 7 is a vertical cross-sectional view showing a state in which the lid body is rotated from the state of FIG. 7 to form a second core passage. It is explanatory drawing for demonstrating the operation of ejecting a core from the state of FIG.

Next, the replacement core case of the present invention will be described in detail using a replacement core case for a mechanical pencil with reference to the drawings, but the present invention is not limited to the following examples.
Further, with respect to the case body of the replacement core case, the direction in which the lid is located is expressed as upward, the opposite direction is expressed as downward, and the surface with the attachment hole of the lid is expressed as the surface, and the opposite surface. Is expressed as the back side.
In addition, in order to make the explanation easy to understand, the same members and the same parts in the drawings are designated by the same reference numerals.

Example 1
As shown in FIGS. 1 to 6, the replacement core case 1 of the present embodiment has a case body 3 having a core storage portion 3a capable of storing a lead 2 for a mechanical pencil inside, and an upper opening of the case body 3. It is composed of a lid fixing member 4 attached to the portion and a lid body 5 rotatably attached to the lid fixing member 4.

The case body 3 is formed by injection molding using a transparent AS resin so that the inside can be seen through. Further, the case body 3 is formed in a box shape having an open upper portion, and a mounting hole 3d penetrating to the inner hole portion 3c is formed in the upper surface portion 3b. Further, a notch portion 3g notched from the upper end 3e toward the side surface 3f is formed on the upper portion of the case main body 3.
The inner hole portion 3c of the case main body 3 is formed with an inner step portion 3h whose left and right positions are different in the vertical direction.

Next, the lid fixing member 4 is formed by injection molding using POM resin, and as shown in FIGS. 2 to 5, the support arm 4b projecting upward from the upper end surface of the plate-shaped base portion 4a. A hooking arm 4c that also protrudes upward from the upper end surface of the base portion 4a, and a fixed arm 4d that is connected to the side end of the base portion 4a and extends upward are formed.
Further, a locking hole 4e penetrating the front and back is formed in the upper part of the support arm 4b.

The hooking arm 4c is formed so as to be tiltable with respect to the base portion 4a, and the hooking portion 4f is formed at the upper end portion, and the hooking portion 4f is formed so as to project laterally. A convex portion of 4 g is provided. The tip of the hanging convex portion 4g is formed by a hemispherical curved surface. Further, as shown in FIG. 4, the fixing arm 4d is formed with a convex fixing protrusion 4h on the upper surface, and the fixing protrusion 4h is fitted into the mounting hole 3d of the case body 3 to fix the lid. The member 4 is attached to the case body 3 so as not to be detachable.

Further, the base portion 4a of the lid fixing member 4 is formed with a communication hole 4i that penetrates in the vertical direction and allows a plurality of cores 2 to pass through at the same time, and the lower end portion of the base portion 4a is directed toward the communication hole 4i. An inclined surface 4j (inclined portion) that is inclined is formed. Then, when the replacement core case 1 is held upside down in order to discharge the core 2, the core 2 stored in the core storage portion 3a of the case body 3 is configured to be gathered in the communication hole 4i along the inclined surface 4j. be. As shown in FIG. 5, the inclined surface 4j is formed so as to be inclined toward the center from the front surface and the back surface side, and is configured so that the core can be more easily gathered in the central connecting hole 4i.

The lid 5 is formed by injection molding using ABS resin, and is formed in a disk shape when viewed from the front as shown in FIGS. 3 and 6. Further, the surface thereof includes a first surface portion 5a formed to be the thickest, and a second surface portion 5b formed thinly having an area of about 1/3 with respect to the entire surface of the lid body 5. A columnar locked portion 5c protruding outward is formed on the upper portion of the second surface portion 5b and the central portion of the lid 5 in FIG. Then, by inserting the locked portion 5c into the locking hole 4e which is the locking portion of the support arm 4b of the lid fixing member 4, the lid body 5 is rotatably locked to the support arm 4b. ..
Further, two stoppers 5d (first stopper 5d1 and second stopper 5d2) are formed at the boundary portion of the first surface portion 5a of the lid body 5 with the second surface portion 5b, and the two stoppers 5d are formed. Is configured to come into contact with the two side surfaces 4k (first side surface 4k1 and second side surface 4k2) of the support arm 4b when the lid body 5 rotates, thereby restricting the rotation range of the lid body 5.

Two groove-shaped portions 5e (first groove-shaped portion 5e1 and second groove-shaped portion 5e2) formed by linear grooves having different widths are formed on the surface of the lid body 5, and the first groove-shaped portion is formed. The groove width of 5e1 (edge passage) is regulated so that only one core passes at the same time. Further, the second groove-shaped portion 5e2 (large passage) is formed with a groove width that allows three cores to pass in parallel at the same time.
The first groove-shaped portion 5e1 (edge passage) is formed by gradually expanding the inlet portion 5j in accordance with the connecting hole 4i of the lid fixing member 4, and the core 2 has a first groove shape from the connecting hole 4i. When passing through the portion 5e1, the inlet portion 5j of the first groove-shaped portion 5e1 makes it difficult for the core 2 to be caught. Further, the second groove-shaped portion 5e2 (large passage) is formed to have substantially the same width as the connecting hole 4i of the lid fixing member 4.
Further, in this embodiment, by rotating the lid body 5 counterclockwise from the state of FIG. 3, the first core passage 6 (see FIG. 7) in which the first groove-shaped portion 5e1 and the connecting hole 4i are linearly connected. ) Is formed, and the lid 5 is further rotated counterclockwise to form a second core passage 7 (see FIG. 9) in which the second groove-shaped portion 5e2 and the connecting hole 4i are linearly connected. It is configured to.

Further, the first groove-shaped portion 5e1 (small passage) and the second groove-shaped portion 5e2 (large passage) are formed by grooves having the same depth, and the intersecting portion 5h is formed by intersecting the two groove-shaped portions. It is formed.
A chamfered portion 5i is formed in the intersecting portion 5h by subjecting each corner portion of the intersecting portion 5h to a convex curved surface processing (R processing) in order to prevent the core 2 from being caught when passing through.
In this embodiment, the first groove-shaped portion 5e1 (small passage) and the second groove-shaped portion 5e2 (large passage) are formed by grooves having the same depth, but depending on the number of cores passing through the groove. May be formed with a different depth and shape.

Further, at the outer peripheral end of the first surface portion 5a of the lid body 5, three hooked portions 5f (first hooked portion 5f1 and second hooked portion 5f1) formed in a concave shape toward the center of the lid body 5 are formed. The portion 5f2 and the third hooked portion 5f3) are formed, and each locked portion 5f is formed so as to match the curved surface of the hooking convex portion 4g of the hooking arm 4c. Then, by rotating the lid body 5, the hooking arm 4c is tilted to release the hooked state of the hooked portion 5f and the hooked portion 4f, and the hooked portion 5f and the hooking portion 4f are released from each other. It is configured so that the and can be switched between the hooked state and the non-hooked state.

Specifically, the rotational torque required to rotate the lid 5 from the hooked state of the hooked portion 5f and the hooked convex portion 4g to release the hooking is 0.014N in this embodiment. It is set to m, preferably 0.004 N ・ m or more and 0.040 N ・ m or less, and more preferably 0.007 N ・ m or more and 0.018 N ・ m or less, and the intention of the user. On the contrary, it is possible to prevent the lid 5 from rotating and to easily release the hooked state at the user's will.
In this embodiment, the rotation angle required to rotate the lid 5 from the state of FIG. 3 in which the passage through which the core 2 passes is not formed to the state of FIG. 7 in which the first core passage 6 is formed is set. It is set to 30 degrees, and the rotation angle required to rotate the lid 5 from the state of FIG. 7 to the state of FIG. 9 in which the second core passage 7 is formed is set to 30 degrees. Therefore, the rotation angle required to rotate the lid 5 from the state of FIG. 3 in which the passage through which the core 2 passes is not formed to the state of FIG. 9 in which the second core passage 7 is formed is 60 degrees, which is the maximum. However, by rotating the lid 5 by 60 degrees, it is possible to switch between a state in which the core is not discharged and a state in which the core is discharged.

Further, continuous recesses 5k are formed on the outer peripheral surface of the lid 5 as shown in FIGS. 3 and 6, and the recesses 5k make the lid 5 less slippery when it is turned by a finger.
Further, a recessed portion 5g formed in a concave shape is formed inside the three hooking portions 5f of the lid body 5, and the hooking portion 4f of the hooking arm 4c and the three hooking portions 5f of the lid body 5 are hooked. When the portion 5f is hooked, the hooking sound is reverberated by the hollow recessed portion 5g, which makes it easier for the user to recognize that the portion 5f is hooked.

Here, a method of rotatably attaching the lid body 5 to the case body 3 will be described. First, the locked portion 5c of the lid body 5 is inserted into the locking hole 4e from the back surface side of the lid fixing member 4. Then, the lid fixing member 4 is inserted into the upper opening of the case body 3 while maintaining the inserted state of the locked portion 5c, and the fixing projection 4h of the lid fixing member 4 is fitted into the mounting hole 3d of the case body 3. As a result, the lid body 5 cannot be removed from the lid fixing member 4, and the lid body 5 is rotatably attached to the case body 3.
When the lid body fixing member 4 is inserted into the case body 3, the lower end portion 4m of the side surface of the lid body fixing member 4 comes into contact with the inner stage portion 3h of the case body 3, so that the insertion of the lid body 5 is stopped. It is configured as follows.

Next, an operation of discharging the core 2 from the replacement core case 1 by rotating the lid 5 will be described.
In the state of FIG. 3, since the communication hole 4i of the lid fixing member 4 and the two groove-shaped portions 5e of the lid body 5 are in a discontinuous state, the core 2 does not come out from the core storage portion 3a inside the case body 3. , This is the state when the replacement core case 1 is carried or stored.
From the state of FIG. 3, when a finger was placed on the side surface of the lid 5 protruding outward from the notch 3g of the case body 3 and rotated counterclockwise, the case was hooked on the first hooked portion 5f1. The hooking state is released by tilting the hooking arm 4c of the hooking portion 4f, and the hooking portion 4f of the second hooked portion 5f2 and the hooking arm 4c is further rotated counterclockwise. The state shown in FIG. 7 is obtained. At this time, the second groove-shaped portion 5e1 of the lid body 5 and the communication hole 4i of the lid fixing member 4 communicate with each other to form a first core passage 6 through which only one core 2 can pass at a time. Further, in the state of FIG. 7, as shown in FIG. 8, by holding the replacement core case 1 upside down, the cores 2 can be discharged one by one from the core storage portion 3a through the first core passage 6.
Then, when the lid 5 is rotated counterclockwise from the state shown in FIG. 7, the hooking arm 4c hooked on the second hooked portion 5f2 is tilted to release the hooked state, and further counterclockwise. By rotating the lid body 5 around, the state of FIG. 9 is obtained in which the third hooked portion 5f3 and the hooking portion 4f of the hooking arm 4 are hooked. At this time, the first side surface 4k1 of the support arm 4b and the first stopper 5d1 of the lid 5 come into contact with each other, so that the rotation of the lid 5 in the counterclockwise direction is restricted, and the lid 5 is more than necessary. It can be prevented from rotating. Further, at this time, the second groove-shaped portion 5e2 of the lid body 5 and the communication hole 4i of the lid fixing member 4 communicate with each other to form a second core passage 7 through which a maximum of three cores can pass at the same time. In the state of FIG. 9, by holding the replacement core case 1 upside down as shown in FIG. 10, a plurality of cores 2 (up to 3) can be discharged through the second core passage 7.

Further, when the lid 5 is rotated clockwise from the state of FIG. 9, the hooking arm 4c hooked on the third hooked portion 5f3 is tilted to release the hooked state, and further clockwise. By rotating the lid body 5, the second hooked portion 5f2 and the hooked portion 4f of the hooking arm 4c are hooked, and then the first hooked portion 5f1 and the hooking portion 4f of the hooking arm 4c are engaged. Returns to the state shown in FIG. At this time, the second side surface 4k2 of the support arm 4c and the second stopper 5d2 of the lid 5 come into contact with each other, so that the clockwise rotation of the lid 5 is restricted, and the lid 5 rotates more than necessary. In addition to being able to prevent this from happening, the communication hole 4i is closed by the lid 5. Therefore, the user can shift to a storage state in which the core 2 is not discharged by rotating the lid 5 until the stopper 5d hits the support arm 4b without worrying about the hooking state of the hooking arm 4c. It is possible to prevent the core 2 from being accidentally discharged from the replacement core case 1.

In this embodiment, when the lid is rotated, only one core is discharged at a time from the state of FIG. 3 in which the core is not discharged, and the state of FIG. 7 in which only one core is discharged at a time. Since the rotation angle required to rotate the lid to the state shown in FIG. 9 where a plurality of cores can be ejected at the same time is set to 30 degrees, the angle at which the lid is rotated is small and the number of cores ejected can be easily switched. We were able to provide a core case.

In this embodiment, for convenience, the number of cores that can pass through the core passage at the same time is illustrated by the first core passage (1) and the second core passage (3), but the first core passage (2) (Books), second-core passages (4), first-core passages (1), second-core passages (8), etc. can be arbitrarily selected and implemented.

1 ... Replacement core case,
2 ... core,
3 ... Case body, 3a ... Core storage part, 3b ... Upper surface part, 3c ... Inner hole part, 3d ... Mounting hole,
3e ... upper end, 3f ... side surface, 3g ... notch, 3h ... inner stage,
4 ... Closure fixing member, 4a ... Base, 4b ... Support arm, 4c ... Hooking arm,
4d ... Fixed arm, 4e ... Locking hole (locking part), 4f ... Hooking part, 4g ... Hooking convex part,
4h ... Fixed protrusion, 4i ... Communication hole, 4j ... Inclined surface (inclined part), 4k ... Side surface,
4k1 ... 1st side surface, 4k2 ... 2nd side surface, 4m ... lower end of side surface,
5 ... lid, 5a ... first surface, 5b ... second surface, 5c ... locked, 5d ... stopper,
5d1 ... 1st stopper, 5d2 ... 2nd stopper, 5e ... Grooved part,
5e1 ... 1st groove-shaped part (small passage), 5e2 ... 2nd groove-shaped part (large passage),
5f ... Hooked portion, 5f1 ... First hooked portion, 5f2 ... Second hooked portion,
5f3 ... Third hooked part, 5g ... Depressed part, 5h ... Intersection part, 5i ... Chamfered part, 5j ... Entrance part,
5k ... recess,
6 ... First core passage,
7 ... Second core passage.

Claims (5)

It is provided with a case body that can store a rod-shaped core inside and a lid that is rotatably locked to the case body.
In a replacement core case in which a core passage communicating the inside and the outside of the case body is formed by rotating the lid body.
A lid fixing member is attached to the opening formed in the upper part of the case body, and a communication hole through which the core can be inserted is formed in the lid fixing member.
The lid body is formed with a small passage through which the core can pass and a large passage having a width larger than that of the small passage, and is configured to intersect the small passage and the large passage, and the lid. The body is rotatably locked to the lid fixing member and
By rotating the lid body with respect to the case body, when the communication hole of the lid fixing member and the edge passage of the lid body match, one or a plurality of cores can pass through at the same time. When the core passage is formed and the communication hole of the lid fixing member and the large passage of the lid match, a second core passage through which more cores than the first core passage can pass at the same time is formed. A replacement core case featuring. The lid has a plurality of hooked portions formed along the outer peripheral surface, and has a plurality of hooked portions.
The lid fixing member has a base portion having the communication hole, a support arm formed so as to project upward from the base portion, and a locking portion for rotatably locking the lid body, and above the base portion. It is provided with a hooking arm which is formed so as to project toward the tip and has a hooking portion at the tip.
The hook arm is formed so as to be tiltable with respect to the base portion.
The replacement core case according to claim 1, wherein the hooking portion of the hooking arm and the hooked portion of the lid body are configured to be hooked by rotating the lid body. A locking portion is formed on the support arm of the lid fixing member, and a locking portion is formed.
The lid body includes a locked portion that rotatably locks the locking portion, and a plurality of stopper portions that are formed so as to be in contact with the support arm.
The replacement core case according to claim 1 or 2, wherein when the lid body is rotated, the stopper portion and the support arm come into contact with each other to limit the rotation range of the lid body. .. The replacement core case according to any one of claims 1 to 3, wherein a convex curved chamfered portion is provided at an intersection where the small passage and the large passage intersect. The replacement core case according to any one of claims 1 to 4, wherein an inclined portion inclined toward the connecting hole is provided at the lower end portion of the lid fixing member.

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