Replacement cartridge

Abstract

Provided is a replacement cartridge that enables easy removal of a desired replacement cartridge without the cartridge removal port facing downward, and eliminates the problem of a large number of replacement cartridges flying out of the cartridge at the same time. The replacement cartridge includes a cartridge main body (2) that has an inner space surrounded by a back panel (2a) and left and right leg panels (2b) and that is provided as a replacement cartridge housing chamber (2c), and a lid body portion (2e) is formed on the front end portion side and a cartridge portion (2f) is formed on the rear portion side, with a bendable thin wall portion (2d) interposed between the back panel; and a cover member (1) that has a front surface panel (1a) and left and right outer leg panels (1b) and is shaped in a cross section orthogonal to the longitudinal direction in the shape of the Japanese katakana "ko" character, covers the replacement cartridge housing chamber on the cartridge main body side with the front surface panel, and supports the cartridge main body so as to be slidable in the longitudinal direction with the leg panels of the cartridge main body positioned inside the outer leg panels. A guide body (2j) in the shape of a guide rail is formed on the lid body portion (2e) along the longitudinal direction, and a sliding body (1g) that comes into contact with the guide body is provided on the cover member.

Description

TECHNICAL FIELD

[0001] The present application relates to a refill cartridge that houses a writing core used for a mechanical pencil or the like. BACKGROUND

[0002] Examples of the refill cartridge that houses a writing core used for a mechanical pencil or the like are mostly examples in which a bottomed cartridge main body and a lid that is detachably attached to an opening portion of the cartridge main body are provided.

[0003] For example, a refill cartridge disclosed in Patent Literature 1 is configured by a cartridge main body formed of a resin material and a lid formed of a resin material, and the opening portion (a refill outlet) of the cartridge main body is opened by sliding the lid in a direction orthogonal to the longitudinal direction of the refill cartridge.

[0004] In this case, the sliding position of the lid with respect to the cartridge opening portion is configured to be set to two stages, for example, and thus the user can set the size of the opening that is appropriate for the extraction of the refill.

[0005] In addition, a refill cartridge disclosed in Patent Literature 2 is also configured by a cartridge main body formed of a resin material and a lid formed of a resin material, and the lid is detachably attached to the opening portion of the bottomed cartridge main body.

[0006] The opening portion (the refill outlet) formed in the cartridge main body is obliquely cut on the front surface side, and thus the refill cartridge is configured so that the user can pinch the refill with the fingertips and use it easily.

[0007] PRIOR ART DOCUMENTS

[0008] PATENT LITERATURE

[0009] Patent Literature 1: Japanese Patent Application Laid-Open No. 2010-30136

[0010] Patent Literature 2: Japanese Patent Application Laid-Open No. 2010-173248 SUMMARY

[0011] PROBLEMS TO BE SOLVED BY THE INVENTION

[0012] However, in the refill cartridges disclosed in the above-described Patent Literatures, the operation of tilting the cartridge main body so that the refill outlet is slightly directed downward is required in a state in which the refill outlet is opened. Then, the required refill is extracted using the fact that the refill slides out of the cartridge main body to the refill outlet by the action of its own gravity.

[0013] Thus, a fine operation of adjusting the inclination of the cartridge main body while shaking the cartridge main body or the like is required. Therefore, there are cases where the replacement cartridges are replaced beyond necessity, or all of the replacement cartridges in the cartridge main body are ejected from the ejection port and scattered on the floor, and there are cases where an operation of picking up the scattered replacement cartridges is forced to be performed.

[0014] The present application is made in view of the above-described problems of the conventional replacement cartridge case, and has an object to provide a replacement cartridge case which can easily take out a desired replacement cartridge without making the ejection port of the replacement cartridge face downward, and eliminate the above-described problems of the conventional replacement cartridge case in which a large number of replacement cartridges are simultaneously ejected from the cartridge main body.

[0015] Solution to the problem

[0016] The replacement cartridge case of the present application made to solve the above-described problems is characterized in that the replacement cartridge case has: a cartridge main body which has an inside space surrounded by a back panel and left and right leg panels as a replacement cartridge housing chamber, and has a lid portion formed at a front end portion side thereof through a thin wall portion which is bendable in a long side direction of the back panel, and a cartridge portion formed at a rear portion side thereof; and a cover member which has a cross section orthogonal to the long side direction shaped like a Japanese katakana "ko" character by a front surface panel and left and right outside leg panels, covers the replacement cartridge housing chamber of the cartridge main body side by the front surface panel, and supports the cartridge main body so as to be slidable in the long side direction with the leg panels of the cartridge main body positioned inside the outside leg panels, and has a guide body formed in either one of at least one leg panel of the lid portion and the outside leg panel of the cover member side covering the leg panel along the long side direction, and a sliding body formed in the other one which contacts the guide body, and performs a turning operation of lifting up the lid portion toward a back surface side by the thin wall portion with a sliding contact of the sliding body with respect to the guide body, accompanying a sliding operation of the lid portion of the cartridge main body from the front end portion of the cover member.

[0017] In this case, in the preferred embodiment, it is desirable that the replacement cartridge case further has an inner lid which is installed to the left and right leg panels of the cartridge main body and covers the replacement cartridge housing chamber from a front surface side, and a protrusion which avoids a surface contact with the housed replacement cartridge is applied to an inner surface of the back panel of the cartridge main body on the replacement cartridge housing chamber side and an inner surface of the inner lid on the replacement cartridge housing chamber side, respectively.

[0018] Further, it is desirable that in the inner lid, a pair of protection panels are formed from the thin wall portion of the cartridge main body to the lid portion so as to be positioned inside the left and right leg panels, respectively.

[0019] On the other hand, the preferred technical solution of the guide body is that it is formed in a state of protruding in a rail shape along the long direction on the outer side of the leg plate of the cover body portion. In addition, the preferred technical solution of the locking portion is that it is formed protruding on the front end portion of the cover member that ejects the cover body portion by the sliding action to contact the guide body. Furthermore, by forming an inclined region on the guide body that is away from the back plate from the front end portion toward the thin wall portion side, the cover body portion is made to perform a turning action of being warped toward the back side by the thin wall portion with the sliding action.

[0020] In this case, it is further preferable that a parallel region parallel to the back plate is formed on the contact portion of the guide body that contacts the sliding body on the front end portion side, and the inclined region is continuously formed with the parallel region. Thus, in the first half of the sliding action, the cover body portion is not made to perform a turning action, but is made to perform an action of being ejected from the front end portion of the cover member, and the turning action of being warped toward the back side of the cover body portion can be performed in the second half of the sliding action.

[0021] In addition, in the preferred technical solution, a closing plate that links the left and right leg plates and blocks the front end portion is formed on the front end portion of the cover body portion, and the cover body portion is housed in the cover member, and the closing plate is arranged on the front end portion of the cover member in a manner that can be visually recognized in a state of viewing the front surface plate of the cover member from the front.

[0022] Furthermore, it is desirable that the box body and the cover member are each formed of a resin material, a plurality of linear protrusions arranged in a direction orthogonal to the long direction are formed on the back of the back plate of the box body, and a recess such as a circular shape is formed on the surface of the front surface plate of the cover member.

[0023] Furthermore, it is desirable that a sliding rib is formed on the outer surface of the inner cover along the long direction of the inner cover, and the inner bottom surface of the cover member is a pear skin surface.

[0024] In addition, in another embodiment of the replacement cartridge of the present application, it is characterized in that an operation portion that protrudes toward the outer side of the leg plate is provided on the box body, and a sliding action of ejecting the cover body portion of the box body from the front end portion of the cover member is performed by relatively moving the operation portion in the long direction of the cover member.

[0025] Further, the replacement cartridge of the present application integrally has left and right leg plates on both sides of the main surface plate, and the cross section orthogonal to the longitudinal direction is shaped like a Japanese Katakana "コ" character. A member in which an inner side protruding portion is integrally formed on the left and right leg plates toward the inner side thereof is used as one replacement cartridge component. The replacement cartridge is characterized in that a first step portion having a height difference with respect to the inner bottom surface of the main surface plate is formed on the inner bottom surface of the main surface plate sandwiched by the left and right leg plates, along the left and right leg plate sides other than the central portion in the longitudinal direction of the inner bottom surface.

[0026] In this case, in a preferred aspect, a second step portion having a height difference with respect to the inner side surface is formed continuously with the first step portion on the opposite inner side surfaces of the left and right leg plates.

[0027] Further, a third step portion having a concave-convex direction different from that of the first step portion is formed on the inner bottom surface of the main surface plate sandwiched by the left and right leg plates at a position deviated with respect to the first step portion. In this case, it is preferable to adopt a structure in which the first step portion is formed protruding with respect to the inner bottom surface, and the third step portion is formed recessed with respect to the inner bottom surface.

[0028] Effects of the Invention

[0029] According to the replacement cartridge of the present application, the cartridge main body in which the lid portion and the case portion are formed across the bendable thin wall portion is installed in the cover member in a slidable manner to form the replacement cartridge. Further, by applying a guide body and a sliding body that can slide in contact with each other by the sliding action to either one of the lid portion and the cover member side and the other, a turning action of the lid portion upwardly toward the back surface side is performed along with the sliding action.

[0030] Thus, the front end portion of the replacement cartridge is exposed in a state of protruding from the case portion by the turning action of the lid portion by the thin wall portion, and therefore, the desired replacement cartridge can be easily taken out.

[0031] Therefore, the replacement cartridge can be taken out without making the taking-out port of the replacement cartridge face downward, and thus, a replacement cartridge that eliminates the conventional problems such as a large number of replacement cartridges flying out from the cartridge main body side at the same time can be provided.

[0032] In addition, an inner cover that covers the replacement cartridge housing chamber from the front surface side is also installed on the cartridge main body side, and a protrusion that avoids surface contact with the replacement cartridge is formed on the inner surface of the cartridge main body side and the inner cover, respectively, and therefore, the problem of the replacement cartridge adhering to the inside of the replacement cartridge housing chamber due to static electricity can be effectively eliminated.

[0033] Thus, the cartridge body and the inner lid are formed of two members, and therefore, compared with a case where protrusions are formed on opposite inner surfaces respectively using one member, damage caused by forcibly pulling out the opposite protrusions at the time of demolding can be avoided.

[0034] Further, the inner lid is configured such that a pair of protection plates are formed on the inner sides of the leg plates on the left and right of the cartridge body at positions extending from the thin-walled portion of the cartridge body to the lid body portion, and therefore, when the lid body portion that has been fed out by the sliding action is returned into the cover member, the problem of the replacement cartridge being caught between the leg plate on the lid body portion side that is warped toward the back surface side and the leg plate on the cartridge portion side can be effectively eliminated.

[0035] Further, other effects of the present application are described in the column of detailed description of the embodiments each time along with the description of the embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 is a front view of a replacement cartridge according to the first embodiment of the present application.

[0037] Figure 2 is a rear view of the replacement cartridge according to the first embodiment of the present application.

[0038] Figure 3 is a cross-sectional view taken along the arrow direction of line a-a of Figure 2

[0039] Figure 4 is a cross-sectional view taken along the arrow direction of line b-b of Figure 2

[0040] Figure 5 is a rear view of the state where the lid body portion is fed out halfway from the cartridge body side.

[0041] Figure 6 is a cross-sectional view taken along the arrow direction of line c-c of Figure 5

[0042] Figure 7 is a cross-sectional view showing the state after the lid body portion is fully opened from the state shown in Figure 6

[0043] Figure 8 is a perspective view of the state after the lid body portion is fully opened, as viewed from the cover member side.

[0044] Figure 9 is a perspective view of the state where the replacement cartridge is accommodated after the lid body portion is fully opened, as viewed from the cover member side.

[0045] Figure 10 is a perspective view showing the structure of a single product that constitutes the cartridge body of the replacement cartridge. ​​​​

[0046] Figure 11 is a front view showing the single product structure of the cartridge main body constituting the replacement cartridge.

[0047] Figure 12 is a plan view showing the single product structure of the cartridge main body constituting the replacement cartridge.

[0048] Figure 13 is a perspective view showing the single product structure of the inner cap.

[0049] Figure 14 is a front view showing the single product structure of the inner cap.

[0050] Figure 15 is a sectional view taken along the line d-d of Figure 14 in the arrow direction.

[0051] Figure 16 is a perspective view of the inner cap viewed from the outer surface side.

[0052] Figure 17 is a perspective view showing the single product structure of the cover member.

[0053] Figure 18 is a front view showing the single product structure of the cover member.

[0054] Figure 19 is a sectional view taken along the line e-e of Figure 18 in the arrow direction.

[0055] Figure 20 is an enlarged perspective view of the portion surrounded by the dotted line j in Figure 14 .

[0056] Figure 21 is an enlarged view of the back corner of the replacement cartridge.

[0057] Figure 22 is a rear view of the replacement cartridge of the second embodiment.

[0058] Figure 23 is a rear view of the replacement cartridge in a state where the cap portion is sent out halfway.

[0059] Figure 24 is a schematic view showing a molding method of the replacement cartridge component in the order of the procedures (A) to (D).

[0060] Figure 25 is a perspective view showing the replacement cartridge component obtained by the molding method shown in Figure 24 .

[0061] Figure 26 is a front view showing the replacement cartridge component obtained by the molding method shown in Figure 24 .

[0062] Figure 27 is a sectional view taken along the arrow direction of the f-f line of Figure 26

[0063] Figure 28 is a sectional view taken along the arrow direction of the g-g line of Figure 26

[0064] Figure 29 is a sectional view taken along the arrow direction of the h-h line of Figure 26 DETAILED DESCRIPTION

[0065] The alternative cartridge of the present application is explained based on the drawings.

[0066] Further, Figures 1 to 21 The alternative cartridge of the first embodiment is shown, Figures 22 to 23 The alternative cartridge of the second embodiment is shown. Also, Figures 24 to 29 The alternative cartridge is shown as an example of the alternative cartridge.

[0067] First, the alternative cartridge of the first embodiment is explained based on Figures 1 to 21 The alternative cartridge of the first embodiment is shown,

[0068] Figure 1 and Figure 2 The overall structure of the alternative cartridge is shown as viewed from the surface side of the cover member 1 and as viewed from the back side of the cartridge body 2.

[0069] In this embodiment, the cover member 1 and the cartridge body 2 are formed of a resin material, and the inner cover 3 which is mounted to the cartridge body 2 described later and covered by the cover member 1 is also formed of a resin material. Also, the cartridge body 2 and the inner cover 3 are mounted to the cover member 1 in a manner that they can slide in the longitudinal direction with respect to the cover member 1 to constitute the alternative cartridge.

[0070] Further, hereinafter, for the convenience of explanation, the side of the longitudinal direction from which the cover body portion 2e described later of the cartridge body 2 is ejected from the cover member 1 is referred to as the front end portion, and the other side is referred to as the rear portion.

[0071] Figures 10 to 19 The individual structures of the cartridge body 2, the inner cover 3, and the cover member 1 are shown in FIGS.

[0072] Figures 10 to 12 ​​​A cartridge main body 2 is shown, which is shaped in a Japanese Kana "コ" character shape in a cross section orthogonal to a longitudinal direction with a back panel 2a and left and right leg panels 2b, and a replacement cartridge housing chamber 2c is formed in an inner space surrounded in the "コ" character shape.

[0073] Further, a thin-walled portion 2d, which is bendable, is provided in the vicinity of a front end portion of the back panel 2a in the longitudinal direction, a cover portion 2e is formed on the front end portion side, and a cartridge portion 2f is formed on the rear portion side.

[0074] Then, a closing plate 2g, which links the left and right leg panels 2b and blocks the front end portion of the cover portion 2e, is formed in the cover portion 2e, and a rear closing plate 2h, which links the left and right leg panels 2b and blocks the rear portion of the cartridge portion 2f, is formed on the rear portion of the cartridge portion 2f.

[0075] A pair of guide bodies 2j is protrusively formed in an orbit shape on the outside of the left and right leg panels 2b of the cover portion 2e in the longitudinal direction, respectively. As shown in Figure 12 the guide bodies 2j are formed with a parallel region 2j1 parallel to the back panel 2a on the front end portion side of the cover portion 2e, and then formed with an inclined region 2j2, which is inclined away from the back panel 2a toward the thin-walled portion 2d side.

[0076] Further, the parallel region 2j1 and the inclined region 2j2 of the guide bodies 2j function in such a manner that, in conjunction with a sliding motion of the cover portion 2e of the cartridge main body 2 by the front end portion of the cover member 1, which will be described later, slidingly contacts a sliding body 1g provided on the cover member 1 side, thereby performing a turning motion of the cover portion 2e to be warped toward the back side by the thin-walled portion 2d.

[0077] In the left and right leg panels 2b of the cartridge portion 2f, fitting recesses 2k for mounting an inner cover 3, which will be described later, are formed in the vicinity of the central portion in the longitudinal direction and the portion close to the cover portion 2e.

[0078] Further, a pair of sliding protrusions 2m is formed on the outside of the left and right leg panels 2b of the cartridge portion 2f in the longitudinal direction of the cartridge main body 2. The sliding protrusions 2m are engaged with a cartridge support portion 1d, which will be described later, provided in the cover member 1, and function to support the cartridge main body 2 so as to be slidable in the longitudinal direction.

[0079] Further, a rib-shaped engagement protrusion 2n is formed on the rear portion side of the left and right leg panels 2b of the cartridge portion 2f, which is used to be passed over by an engagement body 1f formed on the cartridge main body 2 side when the cover member 1 performs a sliding motion relative to the cartridge main body 2, thereby generating an engagement action. Thus, the engagement action is also generated when the cartridge main body 2 is returned into the cover member 1.

[0080] Moreover, on the inner surface of the back panel 2a of the cartridge portion 2f on the side of the replacement cartridge housing chamber 2c, a plurality of protrusions 2p for avoiding surface contact with the replacement cartridge housed therein are formed in a manner orthogonal to the longitudinal direction of the cartridge main body 2. This functions to prevent the replacement cartridge L from being adhered to the inner surface of the replacement cartridge housing chamber 2c of the cartridge main body 2 formed of a resin material due to static electricity.

[0081] Moreover, as shown in Figure 2 the back surface side of the back panel 2a of the cartridge main body 2, a recess 2q is formed along the longitudinal direction of the rear half portion, and a plurality of linear protrusion groups 2r arranged in a direction orthogonal to the longitudinal direction of the cartridge main body 2 are formed in the recess 2q. Moreover, a triangular arrow mark 2s is preferably formed on the front end portion side of the recess 2q.

[0082] The arrow mark 2s indicates the sliding direction of the cartridge main body 2 side with respect to the cap member 1, and the protrusion groups 2r function as anti-slip portions for the fingertips in the sliding operation.

[0083] Further, the inward ribs 2t are formed in the left and right leg panels 2b of the cartridge main body 2 toward the inside of the cartridge main body 2. The inward ribs 2t contact the side edges of the inner cap 3 when the inner cap 3 is attached to the cartridge main body 2, and fill the gap between the cartridge main body 2 and the inner cap 3, thereby functioning as the fitting force of the inner cap 3 with respect to the cartridge main body 2. Thus, the inward ribs 2t do not come off from each side during disassembly, and an increase in the fixing force can be achieved.

[0084] In addition, three inclined protrusions 2u are integrally formed on the upper side edges of the left and right leg panels 2b of the cartridge main body 2 on the side of the cartridge portion 2f, that is, on the same plane as the fitting recess 2k.

[0085] In addition, on the inner surfaces of the left and right leg panels 2b on the side of the front end portion and the rear end portion of the cartridge portion 2f, hill-shaped protrusions 2v are formed in a manner facing each other on the side of the inclined protrusions 2u.

[0086] Moreover, on the side of the cover portion 2e of the cartridge main body 2, rib-shaped protrusions 2w are also formed on the inner sides of the left and right leg panels 2b in a manner facing each other.

[0087] The inclined protrusions 2u, the hill-shaped protrusions 2v, and the rib-shaped protrusions 2w all function in such a manner that, in a state in which a predetermined number of replacement cartridges L are housed in the replacement cartridge housing chamber 2c of the cartridge main body 2, when the replacement cartridge cartridge is assembled by, for example, an automatic device, the breakage of the replacement cartridges L can be particularly prevented.

[0088] That is, when the replacement cartridge case is assembled by the automatic device, the following procedure is accompanied: the replacement cartridges L of a prescribed number are put into the replacement cartridge housing chamber 2c of the case main body 2 arranged on a horizontal plane in a manner coinciding with the long side direction thereof, the inner lid 3 is pressed from above the case main body 2 in this state, and the inner lid 3 is fitted to the case main body 2. Then, the cover member 1 is installed on the upper portion of the inner lid 3 in a manner covering the inner lid 3, whereby the leg plate 2b of the case main body 2 is housed inside the outer side leg plate 1b of the cover member 1, and the case main body 2 is supported so as to be slidable with respect to the cover member 1, and the assembly of the case main body 2 as a replacement cartridge case is completed as a product.

[0089] Thus, the projection surface of the inclined projection 2u is inclined in a manner decreasing from the outside to the inside of the case portion 2f, and functions in such a manner as to prevent the replacement cartridges L formed slenderly from being placed on the same plane as the fitting recess portion 2k, thereby causing all of the replacement cartridges L put in to be housed in the replacement cartridge housing chamber 2c of the case main body 2.

[0090] In addition, the gable-shaped projection 2v and the rib-shaped projection 2w function as guides that guide each replacement cartridge L put into the replacement cartridge housing chamber 2c to the central portion side of the replacement cartridge housing chamber 2c in such a manner as to not contact the left and right leg plates 2b.

[0091] This is to prevent the pair of protection plates 3b formed on the inner lid 3 from pinching the front end portion of the replacement cartridge L put into the replacement cartridge housing chamber 2c in the process of fitting the inner lid 3 to the case main body 2. Thus, breakage of the replacement cartridge L is prevented, and the occurrence of defects in the product as a replacement cartridge case can be prevented.

[0092] Figures 13 to 16 The structure of the inner lid 3 installed on the left and right leg plates 2b of the case main body 2 and covering the replacement cartridge housing chamber 2c from the front surface side is shown.

[0093] The inner lid 3 is formed in a flat shape and has fitting projections 3a formed in a rectangular shape near the central portion and the front end portion in the long side direction. The fitting projections 3a position the inner lid 3 and the case main body 2 by being fitted into the inner lid fitting recess portions 2k formed in the case main body 2 and are installed in a manner covering the replacement cartridge housing chamber 2c of the case main body 2 from the front surface side.

[0094] At this time, the pair of protection plates 3b formed on the front end portion of the inner lid 3 are arranged inside the left and right leg plates 2b of the case main body 2 in a manner positioned at a position from the thin wall portion 2d to the cover portion 2e of the case main body 2.

[0095] Thus, as recited in the column of the effect of the invention, it is possible to effectively eliminate the problem that the replacement cartridge L is caught between the leg plate 2b on the side of the cover body 2e which is warped toward the back surface side and the leg plate 2b on the side of the cartridge body 2f when the cover body 2e which is sent out by the sliding operation is returned into the housing member 1.

[0096] Further, in the rear portion of the inner cover 3, a pair of spacers 3c which are protruded from the inner surface of the inner cover 3 function in such a manner that a certain interval is maintained between the rear portion of the inner cover 3 and the back surface plate 2a of the cartridge body 2.

[0097] Further, a plurality of protrusions 3d are formed in the inner surface of the inner cover 3 in a direction orthogonal to the longitudinal direction of the inner cover 3. This is to avoid the replacement cartridge L from being adhered to the inner cover 3 by electrostatic adsorption, by avoiding the surface contact between the replacement cartridge L and the inner cover 3 which is made of resin and covers the replacement cartridge housing chamber 2c of the cartridge body 2f from the front surface.

[0098] Further, a rib-shaped stopper 3e which is protruded from the inner surface of the inner cover 3 is formed beside the pair of spacers 3c formed in the inner cover 3.

[0099] The stopper 3e functions in such a manner that the replacement cartridge L housed in the replacement cartridge housing chamber 2c is prevented from leaking from the replacement cartridge housing chamber 2c, by being located in front of the gap between the cartridge body 2 and the rear end portion of the inner cover 3 in the state where the inner cover 3 is attached to the cartridge body 2.

[0100] Figure 16 is a perspective view of the inner cover 3 as viewed from the outer surface side, and two sliding ribs 3f are formed in the outer surface of the inner cover 3 in a state of being parallel to each other.

[0101] Thus, in the state where the inner cover 3 is attached to the cartridge body 2, the two sliding ribs 3f are located in the outer surface of the inner cover 3. Due to this, the two sliding ribs 3f function in such a manner that the sliding ribs 3f slide along the longitudinal direction with respect to the aforementioned pear skin surface formed in the inner bottom surface Im of the housing member 1 to obtain an appropriate contact resistance.

[0102] Figures 17 to 19 The single product structure of the housing member 1 is shown, which is shaped in the form of the Japanese Kana "コ" character in the cross section orthogonal to the longitudinal direction by the front surface plate la and the left and right outer leg plates lb, and the rear leg plate lc which links the left and right outer leg plates lb is formed in the rear portion of the housing member 1. Further, the replacement cartridge housing chamber 2c of the cartridge body 2 is covered by the front surface plate la, and the left and right leg plates 2b of the cartridge body 2 are located inside the left and right outer leg plates lb to support the cartridge body 2 so as to be slidable in the longitudinal direction.

[0103] Further, the cover body 2e of the cartridge body 2 is sent out from the front end portion side of the housing member 1 by the sliding operation.

[0104] Along the edge portions of the left and right outer leg plates 1b, two portions in the longitudinal direction are formed with box supporting portions Id, respectively, facing the inner side, which support the left and right slide protrusions 2m formed in the leg plates 2b of the box body 2 in a slidable manner, thereby supporting the box body 2 so as to be slidable, and also function to prevent the box body 2 from being detached from the cover member 1.

[0105] Further, a pair of slide protrusions 1e are formed on the inner side of the rear portions of the left and right outer leg plates 1b, facing each other. The pair of slide protrusions 1e produce a click action when the rib-shaped click protrusions 2n formed in the box body 2 are passed forward so that the box body 2 becomes in an open state.

[0106] Further, a pair of click bodies If are formed on the inner side of the rear portions of the outer leg plates 1b, facing each other, which produce a click action when the rib-shaped click protrusions 2n formed in the box body 2 are passed rearward when the box body 2 is made to perform a sliding action.

[0107] A pair of slide bodies Ig are provided protruding on the outer leg plates 1b of the front end portion of the cover member 1, facing each other. The pair of slide bodies Ig contact the parallel region 2j1 and the inclined region 2j2 of the guide body 2j formed in the cover body portion 2e when the cover body portion 2e is made to protrude from the front end portion of the cover member 1 by the sliding of the box body 2, thereby functioning to make the cover body portion 2e to be raised toward the back side. Details of this action will be described later based on Figures 4 to 7 and the like.

[0108] In addition, stoppers Ih are provided at positions slightly rearward of the slide bodies Ig on the front end portion of the cover member 1, facing each other. The pair of stoppers Ih abut against the front end portions of the slide protrusions 2m formed in the leg plates 2b of the box portion 2f when the cover body portion 2e is made to be fully open by the sliding of the box body 2 (see Figure 7 ), thereby stopping the sliding action of the box body 2.

[0109] In addition, the pair of stoppers Ih contact the return guide portion 2j3 of the guide body 2j in the sliding action of pulling the box body 2 back into the cover member 1, thereby also functioning to return the cover body portion 2e in the state of being raised toward the back side to the state of being along the longitudinal direction of the box body 2. Details of this action will be described later based on Figures 4 to 7 and the like.

[0110] Further, as shown in Figure 17 and Figure 18As shown, the inner bottom surface lm of the cover member 1, which is surrounded by the left and right outer side leg plates lb, is formed with a flat-shaped protrusion ln of a rectangular shape, which is formed so as to slightly protrude from the inner bottom surface lm, on the left and right outer side leg plate lb sides other than the central portion in the longitudinal direction of the inner bottom surface lm.

[0111] Further, the inner bottom surface lm of the cover member 1 is formed as a pear skin surface, and the sliding rib 3f formed on the outer surface of the inner cap 3 slides along the longitudinal direction of the rib 3f on the pear skin surface of the inner bottom surface lm of the cover member 1.

[0112] In this case, the pear skin surface formed on the inner bottom surface lm of the cover member 1 is preferably set to have an arithmetic average roughness (Ra) in the range of 5 μm to 50 μm. In the case where the value is less than 5 μm, the surface approaches a mirror surface, and the contact resistance becomes large, which can cause the sliding between the inner cap 3 and the cover member 1 to be unable to smoothly slide. On the other hand, in the case where the value is more than 50 μm, it is difficult to demold and sufficient mold surface (pear skin surface) transferability cannot be obtained. Further, it is further preferable that the arithmetic average roughness (Ra) be in the range of 10 μm to 25 μm in terms of being able to obtain good demoldability and mold surface transferability.

[0113] The pear skin surface can be obtained by performing processing such as etching processing, sandblasting processing, and non-mirror surface finishing grinding processing on the mold surface. Alternatively, the pear skin surface can be provided by leaving the mold member surface after discharge processing without performing grinding or the like.

[0114] The arithmetic average roughness (Ra) of the pear skin surface refers to the arithmetic average roughness (Ra) defined in accordance with Japanese Industrial Standards JIS B0601:1982. In this case, the surface roughness is measured using a surface roughness meter (model name SJ-301 manufactured by Mitutoyo Corporation).

[0115] Further, by setting the pull-out force of the cap and the main body to be 15 N or more, the cap cannot be easily removed from the main body, and the falling of the component can be prevented.

[0116] On the other hand, as shown in Figure 1 As shown, a circular-shaped recess lk is formed on the surface of the front surface plate la of the cover member 1 at the substantially central portion of the cover member 1.

[0117] With the recess lk and the linear protrusion group 2r on the case main body 2 side, when the case main body 2 is slid with respect to the cover member 1 to perform the operation, for example, the thumb is brought into contact with the recess lk, and, for example, the index finger is brought into contact with the linear protrusion group 2r on the case main body 2 side, and is relatively slid, so that the sliding operation can be smoothly performed.

[0118] Further, as shown inFigure 1 and Figure 2 As shown, with the box body 2 housed within the cover member 1, the state of the front surface plate 1a of the cover member 1 is observed from the front. Figure 1 In the state shown, along the front end recess 1j formed at the front end of the cover member 1, the closing plate 2g of the cover part 2e formed at the front end of the box body 2 can be visually identified.

[0119] Therefore, by making the resin color of the molding box body 2 approximately the same as the color of the core of the replacement core L contained in the replacement core box, the user can also identify the color of the core contained in the replacement core box by the coloring of the sealing plate 2g.

[0120] By varying the resin color concentration of the molding cartridge body 2 according to the hardness of the replacement core L, users can also identify the color by the concentration of the sealing plate 2g. The same colors listed here refer to hues within 10 according to the Munsell color system and brightness and saturation within 3. Furthermore, the concentration is the value obtained by measuring the surface of the component using a densitometer (sakura Densito Meter PDA65 Konishiroku Photo Industry Co., Ltd.). Additionally, the core hardness refers to the writing hardness measured using the method specified in Japanese Industrial Standard JIS S6005:2007.

[0121] Figures 3 to 9 It is mainly used to explain the opening and closing action of the cover part 2e when the box body 2 slides relative to the cover member 1.

[0122] Figure 3 This is a central sectional view of the box body 2, with the inner cover 3 installed, housed within the cover member 1. Figure 2 (Cross-sectional view observed along line a-a) Figure 4 This is a cross-sectional view along a guide body 2j formed in the cover portion 2e at this time (from...). Figure 2 (Cross-section view observed along line b-b).

[0123] The box body 2 is housed within the cover component 1. Figure 4 In the state shown, the stop 1h of the cover member 1 abuts against the return guide 2j3 of the guide body 2j, and thus, the cover part 2e remains closed along the long side direction of the cover member 1.

[0124] Figure 5 The diagram shows a state in which the lid portion 2e of the box body 2 protrudes from the front end of the cover member 1 to about half the length of the lid portion 2e. Figure 6The state of the lid portion 2e at this time is shown. That is, in the initial stage (the first half) in which the lid portion 2e is caused to protrude from the front end portion of the cover member 1, the sliding body 1g on the cover member 1 side comes into contact with and slides along the parallel region 2j1 of the guide body 2j formed in the lid portion 2e. Therefore, no turning action is performed on the lid portion 2e, but an action of feeding out the lid portion 2e from the front end portion of the cover member 1 is performed.

[0125] Further, in the state shown in Figure 6 In the state shown, the sliding body 1g slightly comes into contact with the inclined region 2j2 of the guide body 2j, and in conjunction therewith, the lid portion 2e becomes a state of being slightly warped toward the back side by the thin wall portion 2d.

[0126] As described above, in the initial stage in which the lid portion 2e is caused to protrude, no turning action is performed on the lid portion 2e, but an action of feeding out the lid portion 2e from the front end portion of the cover member 1 is performed, and therefore, even if the replacement cartridge is inadvertently tilted, it is possible to prevent the replacement cartridges L inside the cartridge from flying out and falling down.

[0127] Figure 7 The state in which the lid portion 2e is further fed out from the cover member 1 and the lid portion 2e is fully opened is shown. In the state shown in Figure 6 The latter half of the feeding-out action of the lid portion 2e from the state shown in Figure 7 In the latter half of the feeding-out action of the lid portion 2e from the state shown in

[0128] Further, in the state in which the lid portion 2e is fully opened, Figure 7 In the state shown, the front end portion of the sliding protrusion 2m provided along the longitudinal direction of the cartridge main body 2 comes into abutment with the stopper 1h and the feeding-out of the lid portion 2e is stopped.

[0129] Figure 8 and Figure 9 The appearance structure of the replacement cartridge in the fully opened state of the lid portion 2e is shown, Figure 9 The state in which the cartridge accommodates the replacement cartridges L is shown.

[0130] In the fully opened state of the lid portion 2e, as shown in Figure 7 In this state, it is possible to further arbitrarily warp the lid portion 2e by the thin wall portion 2d with a fingertip or the like.

[0131] Thus, it is possible to accurately take out the required number of replacement cartridges L from the replacement cartridge.

[0132] On the other hand, in the state in which the lid portion 2e is fully opened, Figures 7 to 9In the case where the lid portion 2e is returned into the cover member 1 in the fully open state as shown, for example Figure 6 As shown, the return guide portion 2j3 of the guide body 2j slides against the stopper 1h on the cover member 1 side. Thus, the lid portion 2e in the state of being warped toward the back surface side is housed into the cover member 1 while being returned along the longitudinal direction of the cartridge main body 2.

[0133] Further, in the case where the lid portion 2e is returned into the cover member 1 in the fully open state as shown, for example Figure 4 In the state as shown, the return guide portion 2j3 of the guide body 2j abuts against the stopper 1h on the cover member 1 side, and thus the lid portion 2e is maintained in the closed state.

[0134] Further, the following problem can occur in the case where the lid portion 2e is returned into the cover member 1 from the fully open state: a part of the replacement cartridge L housed into the cartridge is pinched between the leg plate 2b provided to the lid portion 2e and the leg plate 2b provided to the cartridge portion 2f across the thin wall portion 2d, and the replacement cartridge L is damaged.

[0135] However, as shown in Figure 8 As shown, the pair of protection plates 3b formed at the front end portion of the inner lid 3 are positioned inside each of the leg plates 2b of the lid portion 2e and the cartridge portion 2f, and thus the above-mentioned problem of damaging the replacement cartridge L can be avoided.

[0136] Figure 20 is a partial enlarged view of a portion surrounded by the dotted line j of Figure 14 As shown, a pair of inclined surfaces 3g are applied to the inner side of the fitting convex portion 3a formed in a rectangular shape.

[0137] By applying a pair of inclined surfaces 3g to the fitting convex portion 3a, the position deviation in the longitudinal direction at the time of assembly of the inner lid 3 with respect to the cartridge main body 2 can be more effectively prevented.

[0138] In addition, Figure 21 is a partial enlarged view of a corner portion of the cartridge main body 2 surrounded by the dotted line m shown in Figure 11 in the state shown in Figure 18 is a partial enlarged view of a corner portion of the cover member 1 surrounded by the dotted line n.

[0139] As shown in the Figure 21 As shown, the snap body 1f formed on the cover member 1 side is formed in a trapezoidal shape with a gentle inclined surface along the longitudinal direction, and the sliding protrusion 2n on the cartridge main body 2 side is formed in a trapezoidal shape with a flat surface 2y formed at the top portion thereof.

[0140] According to this structure, the latch body 1f on the cover member 1 side and the sliding protrusion 2n on the case main body 2 side are configured to each have a gently inclined surface, and thus, in a state in which the case main body 2 is slid with respect to the cover member 1 and the cover body portion 2e of the case main body 2 is protruding to start opening, it is possible to reduce the resistance felt by the user.

[0141] Further, since the sliding protrusion 2n on the case main body 2 side is shaped in a trapezoidal shape with a flat surface 2y formed on the top thereof, in the case in which the replacement cartridge is dropped, it is possible to reduce the impact of the drop.

[0142] Figure 22 And Figure 23 The state in which the replacement cartridge of the second embodiment is viewed from the back side is shown, and the same reference numerals are used to indicate portions corresponding to the respective portions in the first embodiment that have been described. Thus, detailed description thereof is omitted.

[0143] The replacement cartridge of the second embodiment is characterized in that the case main body 2 is provided with an operation portion 2x protruding outward of the leg plate 2b, and a sliding operation of the cover body portion 2e of the case main body 2 from the front end portion of the cover member 1 is performed by relatively moving the operation portion 2x in the longitudinal direction of the cover member 1.

[0144] That is, in the case main body 2, a pair of operation portions 2x protruding outward are respectively provided near the thin-walled portions 2d of the left and right leg plates 2b.

[0145] Further, near the front end portions of the left and right outer leg plates 1b of the cover member 1, guide recesses 1q are respectively formed in a state in which portions of the outer leg plates 1b are cut away, along the left and right outer leg plates 1b. The guide recesses 1q position the pair of operation portions 2x formed in the case main body 2 in a state in which the case main body 2 is attached to the cover member 1, and the operation portions 2x are disposed in the guide recesses 1q in a slidable manner.

[0146] Thus, by relatively moving the operation portion 2x in the longitudinal direction of the cover member 1, a sliding operation of the cover body portion 2e of the case main body 2 from the front end portion of the cover member 1 can be performed. Thus, by using the operation portion 2x, a sliding operation of the case main body 2 with respect to the cover member 1 can be easily performed, and a replacement cartridge having excellent operability can be provided.

[0147] In the replacement cartridges of the first and second embodiments described above, in a state in which the inner cover 3 is attached to the case main body 2, the case main body 2 is attached to the cover member 1 in a slidable manner, but the inner cover 3 is not essential, and the inner cover 3 can be omitted.

[0148] In addition, in the case of using the inner lid 3, the inner lid 3 can be joined to the rear side of the cartridge main body 2 by means of a thin-walled joining band that is not shown and integrally formed. Then, by folding back the thin-walled joining band and assembling the inner lid 3 to the cartridge main body 2, the number of parts can be reduced, thereby making it easy to manage manufacturing and enabling the provision of a replacement cartridge that can be further reduced in cost.

[0149] Next, Figure 24 is a schematic view showing one example of a molding method of a replacement cartridge component including the cover member 1 or the cartridge main body 2 of the replacement cartridge according to the order of the procedures (A) to (D). In addition, Figures 25 to 29 shows an example of the replacement cartridge component 11 that can be obtained by using the molding method.

[0150] First, Figure 24 The molding method of the replacement cartridge component 11 shown is applicable to the molding of a replacement cartridge component whose cross section orthogonal to the longitudinal direction is shaped like the Japanese katakana "コ" character by integrally providing left and right outer leg plates 1b to both sides of the front surface plate 1a, like the cover member 1 that constitutes the replacement cartridge that has been described, and in particular, to the molding of a replacement cartridge component in which an inner side protruding portion 14 such as a cartridge support portion 1d is integrally formed toward the inside of the left and right outer leg plates 1b of the cover member 1.

[0151] Thus, in the following description of the molding method of the replacement cartridge component, the cover member 1 and the cartridge main body 2 that have been described previously will be referred to as the replacement cartridge component 11, and the front surface plate 1a of the cover member 1 and the back surface plate 2a of the cartridge main body 2 will be referred to as the main surface plate 12. In addition, the left and right outer leg plates 1b of the cover member 1 and the left and right leg plates 2b of the cartridge main body 2 will be referred to simply as the leg plates 13, and the cartridge support portion 1d, the sliding protrusion 1e, the stopper 1h, and the like that are integrally formed toward the inside of the outer leg plates 1b of the cover member 1 will be referred to as the inner side protruding portion 14.

[0152] Figure 24 is a schematic view showing a resin molding device in a state in which the replacement cartridge component 11, such as the cover member 1 that has been described previously, is molded.

[0153] The resin molding device is provided with a first mold 21, such as a movable mold; a second mold 22 that is mounted with a core pin 23 that constitutes an isosceles trapezoid; a pair of sliding cores 24 that move upward along the core pin 23 in a direction that is inclined with respect to a mold opening direction, which is the direction in which the first mold 21 is opened with respect to the second mold 22; and a protruding pin 25 that moves upward in the same direction as the mold opening direction in which the first mold 21 is opened with respect to the second mold 22.

[0154] In addition, Figure 24The state after the first mold 21 is opened with respect to the second mold 22 is shown. The resin injection process before this process is performed as is well known by injecting resin into the mold cavity in a state where the first mold 21 is closed with respect to the second mold 22.

[0155] In this case, the mold cavity is formed in a space surrounded by the first mold 21, the second mold 22, the core pin 23, the sliding core 24, and the protruding pin 25 shown. Figure 24 The space surrounded by the first mold 21, the second mold 22, the core pin 23, the sliding core 24, and the protruding pin 25 shown.

[0156] Figure 24 The state shown in (B) indicates an initial state where the pair of sliding cores 24 and the protruding pin 25 are simultaneously moved in the opening direction of the first mold 21.

[0157] From this initial state, as shown in (C), the pair of sliding cores 24 and the protruding pin 25 are further raised while maintaining the relative height of the two. Figure 24

[0158] Thus, the inner side protruding portion 14 of the cartridge member 11 is demolded with respect to the recess 24a respectively applied to the front end portion of the sliding core 24 toward the outside, and the cartridge member 11 is received by the front end portion of the protruding pin 25.

[0159] That is, in the state shown in (C), the inner side protruding portion 14 formed in the cartridge member 11 as an undercut portion can be disengaged in the vertical direction with respect to the sliding core 24. Thus, as shown in (D), the resin-molded cartridge member 11 is smoothly extracted by a not-shown mechanical arm or the like. Figure 24 Figure 24

[0160] According to the molding method of the replacement cartridge member described above, at the time of demolding of the replacement cartridge member 11, the sliding core 24 is moved toward the central portion side of the cartridge member 11. Thus, the inner side protruding portion 14 integrally molded with the replacement cartridge member 11 is smoothly demolded with respect to the sliding core 24 and is received by the protruding pin 25.

[0161] Thus, the replacement cartridge member 11 having the inner side protruding portion 14 can be demolded without depending on forcible extraction, and a replacement cartridge member 11 that is prevented from deformation of the inner side protruding portion 14 caused by forcible extraction can be obtained.

[0162] Figures 25 to 29 An example of the replacement cartridge member 11 obtained by the molding method described above is shown, which corresponds to the cap member 1 already explained.

[0163] ​​​In this box component 11, on the inner bottom surface 12a of the main surface plate 12 sandwiched by the left and right leg plates 13, along the left and right leg plate 13 sides other than the central portion in the direction of the long side of the inner bottom surface 12a, a first step portion 16 with a rectangular shape having a height difference relative to the inner bottom surface 12a due to the protruding forming is formed at 6 locations.

[0164] Furthermore, on the opposite inner surfaces 13a of the left and right leg plates 13 of the box component 11, a second step portion 17 is continuously formed with the first step portion 16, having a height difference relative to the inner surface 13a caused by protrusion.

[0165] Furthermore, on the inner bottom surface 12a of the main surface plate 12 sandwiched by the left and right leg plates 13, at four locations located at positions offset from the first step portion, a third step portion 18 is formed with a concave-convex direction different from that of the first step portion 16, that is, an arched third step portion 18 formed with a concave shape relative to the inner bottom surface 12a.

[0166] The inner bottom surface 12a of the box component 11 is made of Figure 24 The top surface of the shown core pin 23 is formed. In addition, the first step portion 16 is formed by the upper end surfaces of a pair of sliding cores 24.

[0167] Furthermore, the second step portion 17 is formed by a planar recess (not shown) applied outwards from the upper end of the core pin 23. Furthermore, the third step portion 18 is formed from the upper end face of the protruding pin 25.

[0168] Therefore, according to Figures 25 to 29 The box component 11 shown has a first step portion 16 formed protruding from the inner bottom surface 12a. Therefore, when the box component 11 is demolded relative to the sliding core, the upper end of the sliding core 24 slides along the surface of the first step portion 16. Thus, by utilizing the movement of the sliding core 24 that accompanies demolding, product defects such as scratches on the inner bottom surface 12a of the box component 11 can be prevented.

[0169] Furthermore, the third step portion 18 of the box component 11 is recessed relative to the inner bottom surface 12a, so that the protruding pin 25 in the recessed third step portion 18 can stably receive the box component 11 that is demolded relative to the sliding core 24.

[0170] Explanation of reference numerals in the attached figures

[0171] 1, cover member; 1a, front surface plate; 1b, outer side leg plate; 1d, case support portion; 1g, sliding body; 1h, stopper; 1k, recess; 1m, inner bottom surface (pockmark surface); 1q, guide recess; 2, case main body; 2a, back surface plate; 2b, leg plate; 2c, replacement core accommodating chamber; 2d, thin wall portion; 2e, cover body portion; 2f, case portion; 2g, closing plate; 2j, guide body; 2j1, parallel region; 2j2, inclined region; 2j3, return guide portion; 2m, sliding protrusion; 2p, protrusion (core sticking prevention protrusion); 2r, protrusion group; 2x, operation portion; 3, inner cover; 3b, protection plate; 3d, protrusion (core sticking prevention protrusion); 3f, sliding rib; L, replacement core; 11, replacement core case member; 12, main surface plate; 12a, inner bottom surface; 13, leg plate; 13a, inner side surface; 14, inner side protruding portion; 16, 1st step portion; 17, 2nd step portion; 18, 3rd step portion.

Claims

1. A replacement cartridge characterized by comprising: a cartridge main body that has an inner space surrounded by a back panel and left and right leg panels as a replacement cartridge housing chamber, and has a lid portion formed on a front end portion side and a cartridge portion formed on a rear portion side with a thin wall portion capable of bending interposed in a longitudinal direction of the back panel; and a cover member that has a cross section orthogonal to the longitudinal direction shaped like a Japanese Katakana "ko" character with a front surface panel and left and right outer leg panels, covers the replacement cartridge housing chamber on the cartridge main body side with the front surface panel, and supports the cartridge main body with the leg panels inside the outer leg panels so as to be slidable in the longitudinal direction, either one of the at least one leg panel of the lid portion and the outer leg panel of the cover member side covering the leg panel has a guide body formed along the longitudinal direction, and the other one has a sliding body in contact with the guide body, with a sliding contact of the sliding body with respect to the guide body accompanying a sliding movement of the lid portion of the cartridge main body out of the front end portion of the cover member, a turning movement of the lid portion upward toward the back side is performed by the thin wall portion.

2. The replacement cartridge according to claim 1, characterized by further comprising an inner lid that is attached to the left and right leg panels of the cartridge main body, covers the replacement cartridge housing chamber from a front surface side, and has a protrusion applied to an inner surface on the replacement cartridge housing chamber side of the back panel of the cartridge main body and an inner surface on the replacement cartridge housing chamber side of the inner lid so as to avoid a surface contact with a replacement cartridge housed therein.

3. The replacement cartridge according to claim 1, characterized in that the guide body is formed in a state of protruding like a guide rail along the longitudinal direction on the outside of the leg panel of the lid portion, and the sliding body is formed to protrude from a front end portion of the cover member that sends the lid portion out with the sliding movement so as to be in contact with the guide body, a turning movement of the lid portion upward toward the back side is performed by the thin wall portion accompanying the sliding movement by forming an inclined region of the guide body away from the back panel toward the thin wall portion side from the front end portion.

4. The replacement cartridge according to claim 1, characterized by forming a closing panel that links the left and right leg panels and blocks the front end portion of the lid portion on the front end portion of the lid portion, and arranging the closing panel on the front end portion of the cover member in a manner that can be visually recognized in a state of viewing the front surface panel of the cover member from the front surface.

5. The replacement cartridge according to claim 1, characterized by both the cartridge main body and the cover member are formed of a resin material, a plurality of linear protrusion groups arranged in a direction orthogonal to the longitudinal direction are formed on the back surface of the back panel of the cartridge main body, and a recess is formed on the surface of the front surface panel of the cover member.

6. The replacement cartridge according to claim 2, characterized by a sliding rib is formed on the outer surface of the inner lid along the longitudinal direction of the inner lid, and an inner bottom surface of the cover member is a pear skin surface. ​ ​ 7. The cartridge-replacing cassette according to claim 1, wherein The box main body is provided with an operation portion protruding to the outside of the leg plates, and the slide movement of the cover portion from the front end portion of the cover member is achieved by relatively moving the operation portion in the longitudinal direction of the cover member.

8. A cartridge-replacing cassette which integrally has left and right leg plates on both sides of a main surface plate, thereby shaping a cross section orthogonal to the longitudinal direction in the shape of a Japanese Katakana "コ" character, and which uses, as one cartridge-replacing cassette member, a member in which an inner side protruding portion is integrally formed on the leg plates in a manner of being directed inward with respect to the left and right leg plates, characterized in that On the inner bottom surface of the main surface plate sandwiched by the left and right leg plates of the cartridge-replacing cassette member, a first step portion having a height difference with respect to the inner bottom surface is formed along the left and right leg plate sides other than the central portion in the longitudinal direction of the inner bottom surface, On the opposite inner side surfaces of the left and right leg plates, a second step portion having a height difference with respect to the inner side surfaces is continuously formed from the first step portion.

9. The cartridge-replacing cassette according to claim 8, wherein On the inner bottom surface of the main surface plate sandwiched by the left and right leg plates, a third step portion having a concave-convex direction different from that of the first step portion is formed at a position deviated with respect to the first step portion.

10. The cartridge-replacing cassette according to claim 9, wherein The first step portion is formed in a protruding manner with respect to the inner bottom surface, and the third step portion is formed in a recessed manner with respect to the inner bottom surface.

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