Rod-shaped mold, mold for injection molding, and method for manufacturing cylindrical member

Abstract

To provide a rod-like mold for molding the internal shape of a cylindrical member by injection molding using a synthetic resin, capable of increasing the variation of the internal shape of the cylindrical member, capable of being manufactured at a low cost and capable of easily performing the correction or the like of the shape even after manufacture, an injection mold and a method for manufacturing the cylindrical member.SOLUTION: Since the rod-shaped mold 8 of the present invention is formed of the members A to E divided with respect to the rod-shaped portion 81 for forming the internal shape and the like of the cylindrical member to be molded, the rod-shaped mold 8 can be manufactured at low cost because the size is small and compact, and since the rod-shaped portion 81 can be manufactured with rigid resins, the rod-shaped mold 8 can be manufactured with a 3D printer or the like, the mold can be easily manufactured at low cost in a short time, and the shape can be easily corrected even after the manufacture. In addition, it is possible to increase variations in the shape of the rod-shaped portion 81 of the rod-shaped mold 8 and variations in the inner shape of the molded tubular member.SELECTED DRAWING: Figure 10

Description

[Technical Field]

[0001] The present invention relates to a rod-shaped mold, an injection mold, and a method for manufacturing a tubular member. More specifically, the present invention relates to a rod-shaped mold, an injection mold, and a method for manufacturing a tubular member that can be used for manufacturing an interior member of an ejaculation promoter and an ejaculation promoter itself. [Background technology]

[0002] Ejaculation promoters or sperm (semen) collectors (hereinafter sometimes referred to simply as "ejaculation promoters, etc.") are tubular members that are inserted into the penis, and various modifications have been made to the internal structure, etc., depending on the size and shape of the penis in order to improve adhesion to the penis and stimulation, etc. Furthermore, as sperm collectors (sperm collectors, sperm collection devices, etc.), such ejaculation promoters are considered extremely important not only from the standpoint of medical research and treatment, etc., but also from the standpoint of social demands such as preventing sex crimes by satisfying personal sexual desires.

[0003] Here, known examples of conventional ejaculation promoters include those having a structure in which a plurality of small protrusions or folds are formed on the inner wall of a tubular member made of synthetic resin such as an elastic polymer such as an elastically deformable elastomer, which has an insertion opening and an insertion section inside that serves as a space for inserting the penis, and the insertion section; and those having a structure in which the tubular member is housed as an interior member (also called a core member) in a space formed in a cylindrical exterior case with a cushioning material inserted inside (see, for example, Patent Documents 1 to 4, etc.).

[0004] The small protrusions and folds formed on the inner wall of the insertion part of the interior member are shaped to mimic the structure of the vagina by, for example, presenting straight or wavy ribs or polyp-like small protrusions and folds, so that when the penis is inserted into the insertion part of the interior member, it is stimulated in the same way as if it were inserted into the vagina. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Utility Model Registration No. 3135770 [Patent Document 2] Japanese Patent Application Laid-Open No. 2012-239560 [Patent Document 3] Japanese Patent Application Laid-Open No. 2015-112317 [Patent Document 4] Patent Publication No. 2021-126485 DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]

[0006] To manufacture such a tubular member with at least one opening, such as the interior member of the ejaculation promoter or the ejaculation promoter itself, it has been common to use injection molding with a synthetic resin such as an elastic polymer, such as an elastomer.

[0007] Furthermore, the molding of a tubular member is carried out by combining a rod-shaped mold (which serves as a core mold), which is a mold including a rod-shaped portion for molding the internal shape of the tubular member, with a frame-shaped mold (which serves as a cavity mold) for molding a shape including the external shape of the tubular member. The rod-shaped mold is a mold in which a rod-shaped portion formed in a shape corresponding to the internal shape of the tubular member is placed upright on a base. The frame-shaped mold is a mold with a cylindrical recess, open on one side, into which the rod-shaped portion of the rod-shaped mold is inserted from the longitudinal direction.

[0008] By injecting molten synthetic resin (resin material) into the space formed between the rod-shaped mold and the recess during injection molding, the shape of the rod-shaped part of the rod-shaped mold appears (transferred) on the inner surface of the space, becoming the internal shape of the tubular member, and the shape of the inner surface of the recess of the frame-shaped mold appears (transferred) on the outer surface of the space, becoming the external shape of the tubular member, etc.

[0009] Here, such rod-shaped molds and rod-shaped portions corresponding to the core mold are manufactured by cutting metal materials such as hard metal materials such as carbon tool steel and alloy tool steel, but the rod-shaped portions are difficult to process due to their long longitudinal shape, and the cost of the metal materials and processing costs during manufacturing are high, resulting in high costs and the manufacturing process taking a long time.

[0010] In addition, including when applied to the above-mentioned ejaculation promoter and its interior components, the internal shape of the tubular member is often required to be precise, and it is difficult to process the rod-shaped mold and rod-shaped portion to form such a precise shape. Also, because the internal shapes of the rod-shaped portion and the tubular member are formed in a one-to-one correspondence, it is not easy to increase the variation in the internal shape, and because it is produced by cutting a hard metal material, if a mistake such as cutting too much is made, it cannot be restored to its original state and the process must be started over from the beginning.

[0011] Core molds for injection molding molds are produced using 3D printers or the like using rigid resin reinforced by glass filling, and the use of such 3D printers is preferable because it allows mold production to be carried out at low cost and in a short time. Here, production of molds using 3D printers or the like is easy for relatively small molds, but the rod-shaped portion of a rod-shaped mold has a rod shape that is long in the longitudinal direction, making it difficult to produce it using rigid resin or the like using a 3D printer or the like.

[0012] The object of the present invention has been made in consideration of the above-mentioned problems, and is to provide a rod-shaped mold (rod-shaped mold) including a rod-shaped portion for injection molding the internal shape of a tubular member with at least one open end using a synthetic resin, which not only increases the variety of internal shapes of such tubular members, but also can be manufactured at low cost and allows for easy shape modifications even after manufacture, a rod-shaped mold, an injection molding mold, and a method for manufacturing a tubular member. [Means for solving the problem]

[0013] In order to achieve the above object, the rod-shaped mold according to the present invention comprises: A mold including a rod-shaped portion for molding an internal shape of a cylindrical member having at least one opening by injection molding using a synthetic resin, a cylindrical recess is formed with an opening on one side, and the rod-shaped portion is inserted from the opening of the recess in the longitudinal direction to form a space between the rod-shaped portion and the recess, and the rod-shaped portion is used in combination with a frame-shaped mold for molding the external shape of the cylindrical member by injection molding; The rod-shaped portion is characterized in that it is formed by combining a plurality of members divided in the longitudinal direction.

[0014] The rod-shaped mold according to the present invention is the above-described present invention, With a base, a rod-shaped shaft fixed upright to the base, The rod-shaped member is formed by inserting the shaft into holes formed in the plurality of divided members.

[0015] The rod-shaped mold according to the present invention is the above-described present invention, A screw thread is formed on the shaft, and a hole is formed in at least one of the multiple divided members that is attached to the tip of the shaft, and a screw thread is formed inside the hole so that it can be screwed onto the screw thread of the rod-shaped shaft and fixed.

[0016] The rod-shaped mold according to the present invention is the above-described present invention, The cylindrical member is an outer case having a cylindrical shape that has an opening at at least one end in the longitudinal direction and can be held by hand; an interior member that is housed in the exterior case with an end face having the insertion opening disposed at an opening of the exterior case; and an insertion section that is a space extending from the insertion opening and that is formed inside the housing section. The interior member of the ejaculation promoter is characterized in that it is provided with:

[0017] The rod-shaped mold according to the present invention is characterized in that, in the present invention described above, the interior member, which is the cylindrical member, has a shape in which a main body portion, inside which an insertion portion that becomes a space extending from the insertion port, is formed, and a substantially disk-shaped flange portion formed at one end of the main body portion on the side where the insertion port is formed, are integrally formed.

[0018] The rod-shaped mold of the present invention is characterized in that, in the present invention described above, the tubular member has an insertion opening at at least one end in the longitudinal direction, and an insertion section that is a space extending from the insertion opening is formed inside, and is used as an ejaculation promoter.

[0019] The rod-shaped mold according to the present invention is characterized in that, in the present invention described above, the rod-shaped portion is made of a rigid resin.

[0020] The injection mold according to the present invention comprises: An injection molding die for molding a cylindrical member having at least one opening using a synthetic resin by injection molding, The rod-shaped mold according to the present invention, a frame-shaped mold having an opening on one side and a cylindrically hollowed-out recess formed therein, the frame-shaped mold being used to form an external shape of the cylindrical member by injection molding using a space formed between the rod-shaped portion and the recess by inserting the rod-shaped portion from the opening of the recess in the longitudinal direction; The present invention is characterized in that it is a combination of the above.

[0021] The method for manufacturing a cylindrical member according to the present invention includes the steps of: A method for manufacturing a cylindrical member, in which a cylindrical member having at least one opening is molded by injection molding using a synthetic resin, comprising: The present invention is characterized in that it is manufactured using the injection molding die according to the present invention. [Effects of the Invention]

[0022] In the rod-shaped mold according to the present invention, the rod-shaped portion for forming the internal shape of the cylindrical member to be molded is formed from divided members, and because each of these divided members is small and compact, it is easier to manufacture than when producing a long rod-shaped member, and since the yield is good, it can be manufactured at low cost. Furthermore, the rod-shaped portion of the rod-shaped mold according to the present invention can be manufactured from rigid resin in addition to metal materials such as hard metal materials, in which case it can be manufactured using a 3D printer, etc. Not only can the mold be manufactured easily, at low cost, and in a short time, but the shape can also be easily modified after manufacturing.

[0023] Furthermore, the rod-shaped mold of the present invention allows the shape of the rod-shaped portion, which is the part that forms the internal shape of the tubular member, to be changed as needed by adjusting the order in which the divided members are attached, thereby increasing the variety of shapes of the rod-shaped portion of the rod-shaped mold and, ultimately, increasing the variety of internal shapes of the tubular members that are formed.

[0024] The injection molding die of the present invention is a combination of the rod-shaped die of the present invention described above and a frame-shaped die for forming the external shape of the tubular member, and therefore enjoys the effects of the rod-shaped die of the present invention described above.

[0025] The method for manufacturing a tubular member according to the present invention is carried out using the injection molding die according to the present invention described above, and therefore, the effects achieved by the injection molding die according to the present invention described above can be advantageously enjoyed. [Brief explanation of the drawings]

[0026] [Figure 1] FIG. 1 is a perspective view showing one embodiment of an ejaculation promoter. [Figure 2] FIG. 2 is a diagram showing the state in which the cover is removed from FIG. [Figure 3] FIG. 1 is a perspective view showing one embodiment of an exterior case. [Figure 4] FIG. [Figure 5]FIG. 1 is a perspective view showing one embodiment of a ring-shaped member; [Figure 6] FIG. 1 is a perspective view showing one embodiment of a ring-shaped member. [Figure 7] FIG. 10 is a view of the interior member viewed from the direction of the insertion opening. [Figure 8] FIG. 2 is a perspective view showing the internal structure of the interior member. [Figure 9] FIG. 2 is a perspective view showing the internal structure of the ejaculation promoter. [Figure 10] FIG. 1 is a diagram showing one embodiment of a rod-shaped mold. [Figure 11] FIG. 10 is a diagram showing a state in which all divided members have been removed from a rod-shaped mold. [Figure 12] FIG. 10 is a diagram showing one aspect of a divided member. [Figure 13] FIG. 10 is a diagram showing a state in which the ring-shaped member is attached to a rod-shaped mold. [Figure 14] FIG. 10 is a diagram showing a state in which the divided member A is attached to the rod-shaped mold. [Figure 15] FIG. 10 is a diagram showing a state in which a divided member B is attached to a rod-shaped mold. [Figure 16] FIG. 10 is a diagram showing a state in which a divided member C is attached to a rod-shaped mold. [Figure 17] Furthermore, this is a diagram showing a state in which a divided member D is attached to a rod-shaped mold. [Figure 18] FIG. 10 is a diagram showing a state in which a divided member E is attached to a rod-shaped mold. [Figure 19] FIG. 1 is a diagram showing a state in which a rod-shaped mold and a frame-shaped mold are combined together. [Figure 20] FIG. 20 is a diagram showing the internal structure of FIG. 19. [Figure 21] FIG. 10 is a diagram showing a state in which a molten constituent material is filled and an interior part is formed around the rod-shaped mold. [Figure 22] FIG. 22 is a diagram showing the internal structure of FIG. 21. [Figure 23] FIG. 10 is a view showing a state in which the frame-shaped mold has been removed and an interior molding member has been formed around the rod-shaped mold. [Figure 24] FIG. 1 is a front view showing one embodiment of an ejaculation promoter that is a cylindrical member. [Figure 25] FIG. 25 is a diagram showing the internal structure of FIG. 24. DETAILED DESCRIPTION OF THE INVENTION

[0027] Hereinafter, examples of embodiments of the present invention will be described with reference to the drawings.

[0028] In this embodiment, the cylindrical member 5 having at least one opening, which is molded by an injection mold 7 consisting of a rod-shaped mold 8 of the present invention or a frame-shaped mold 9 used in combination with such a rod-shaped mold 8 (see Figures 10 and onward for both), will be described as an example of an interior member 5 that is a component of the ejaculation promoter 1. Below, one embodiment of the ejaculation promoter 1, including such interior member 5, will be described with reference to the drawings.

[0029] Furthermore, the ejaculation promoter 1 equipped with the cylindrical inner member 5 can be used as a device to promote ejaculation in men, but it can also be used for medical purposes as a device to collect sperm from men (a sperm (semen) collection device (sometimes called a collector, collection tool, etc.)). In that case, it can also promote ejaculation in men with reduced ejaculation ability. In addition, by suppressing men's sexual urges, it can help build a healthy society.

[0030] (I) Basic structure of ejaculation promoter 1: FIG. 1 is a perspective view (viewed from below) showing one embodiment of the ejaculation promoter 1, and FIG. 2 is a view showing the state of FIG. 1 with the lid 3 removed.

[0031] The ejaculation promoter 1 can also be used as a device for collecting sperm (semen) (sperm collection device), and as shown in Figures 1 and 2 (and also see Figures 3 to 9 described below), The cylindrical member 5 is an outer case 2 having an opening 21 at at least one end in the longitudinal direction and a cylindrical shape that can be held by hand; an interior member 5 in which an insertion opening 51 and an insertion section 52 that is a space extending from the insertion opening 51 are formed in a storage section 26 formed inside the exterior case 2, and which is stored in the exterior case 2 with the end face having the insertion opening 51 positioned at the opening 21 of the exterior case 2; The inner member 5 of the ejaculation promoter 1 is provided with the above.

[0032] In addition, in this embodiment, the interior member 5, which is a cylindrical member 5 having at least one opening, The interior member 5, which is the cylindrical member 5, is integrally formed with a main body portion 56 having an insertion portion 52 formed therein as a space extending from the insertion opening 51, and a substantially disk-shaped flange portion 57 formed at one end of the main body portion 56 on the side where the insertion opening 51 is formed, The interior member 5 and the exterior case 2 are fixed together via the flange portion 57 of the interior member 5 and a ring-shaped member 4 having a substantially ring shape attached to the opening 21 of the exterior case 2.

[0033] (II) Outer case 2: 3 is a perspective view showing one embodiment of the exterior case 2. In the ejaculation enhancer 1, the exterior case 2 is a cylindrical body (cylindrical member) that has an internal storage section 26 that provides a space for storing the interior member 5, which is a cylindrical member 5 having an opening 21 (insertion opening 51) on one side, and is open on at least one side in the longitudinal direction (in this embodiment, an embodiment in which the opening 21 is formed on only one side) by the opening 21. Note that in this embodiment, an embodiment in which a lid 3 for opening and closing the opening 21 of the exterior case 2 is removably attached to the opening 21 of the exterior case 2 will be described as an example.

[0034] In the present invention, the "opening" (opening 21) of the outer case 2 is a concept that includes the opening itself as well as the periphery of the opened space and its vicinity, which are the parts that form such an opening in each component (outer case 2, lid 3, ring-shaped component 4, interior component 5, etc.).

[0035] The opening 21 of the exterior case 2 is opened and closed by removing a lid 3 (described later) that is detachably formed on the exterior case 2. In this embodiment, an air hole 27 (see FIG. 9) is formed on the top surface that corresponds to the opposite side of the opening 21 in the longitudinal direction.

[0036] The shape of the exterior case 2 is not particularly limited as long as it is a cylindrical shape that can be gripped by the hand of a user (not shown) or the like with the user's penis (not shown) inserted through the opening 21. In this embodiment, as shown in Fig. 1 etc., a middle stage 22 that has a gentle mountain shape in a plan view is formed approximately in the center of the longitudinal direction, and two upper stage portions 23, 24 that have a gentler mountain shape than the middle stage portion 22 and are located on either side of the middle stage portion 22, are formed symmetrically with respect to the center of the middle stage portion 22. By using such a shape, the user can place their thumb and index finger on the boundary 25 between the upper stage portions 23, 24 and the middle stage portion 22, which forms a step, and grip the case, making it easy for the user to grip.

[0037] (III) Lid body 3: Fig. 4 is a perspective view showing the inside of the lid 3. As shown in Figs. 1, 4, etc., the lid 3 is a member that is removably attached to the opening 21 of the outer case 2 and that opens and closes the opening 21 of the outer case 2. In this embodiment, the lid 3 is a member that is formed in a cup shape (bowl shape) and has an opening (opening 31), and as shown in Fig. 5, etc., the lid 3 has an opening 31 that faces the circular opening 21 of the outer case 2.

[0038] Furthermore, a hollow, generally cylindrical columnar portion 32 is disposed inside the lid 3, approximately in the center, at a position that corresponds to the insertion opening 51 of the interior member 5 when the lid 3 is attached to the opening 21 of the exterior case 2. By disposing the columnar portion 32 inside the lid 3, positioning of the lid 3 can be accurate when attaching it to the opening 21 of the exterior case 2, and the lid 3 is less likely to come off the opening 21 once attached.

[0039] (IV) Ring-shaped member 4: The following describes the ring-shaped member 4. Fig. 5 is a perspective view (viewed from a direction in which the upper surface 41 is visible) showing one embodiment of the ring-shaped member 4, and Fig. 6 is a perspective view (viewed from a direction in which the lower surface 42 is visible) showing one embodiment of the ring-shaped member 4.

[0040] The ring-shaped member 4 is a substantially annular (substantially ring-shaped) member having a hollow portion 43 in the approximate center for inserting the main body portion 56 of the interior member 5, and also having flat upper and lower surfaces 41 and 42, with a cavity 47 formed inside. The side surface 44 is also flat, but in this embodiment, the side surface 44 is double-layered, with an outer first side surface 441 and an inner second side surface 442 disposed with a gap 45 therebetween.

[0041] The ring-shaped member 4 is arranged in the opening 21 of the outer case 2, and specifically, is fixed by inserting the edge 28 (see Figure 3) of the opening 21 of the outer case 2 into the gap 45 between the double first side surface 441 and the second side surface 442.

[0042] The gap 45 of the ring-shaped member 4 has a bottom surface 46 formed therein. In addition, a rim 461 is formed extending downward from the outer periphery of the bottom surface 46 (inside the first side surface), and the lid 3 can be attached by attaching the inside of the lid 3 to the rim 461, thereby opening and closing the opening 21 of the exterior case 2.

[0043] The ring-shaped member 4 has a hollow cavity 47 inside, and in this embodiment, the upper surface 41 and the lower surface 42 each have a plurality of holes H formed therein that are airtightly connected to the internal hollow cavity 47. In this embodiment, the upper surface 41 and the lower surface 42 of the ring-shaped member 4 have substantially rectangular holes H of the same size (hole H1 formed on the upper surface 41, hole H2 formed on the lower surface) that are formed in a series at equal intervals, with regions R (region R1 formed on the upper surface 41, region R2 formed on the lower surface) formed at the boundaries between adjacent holes H.

[0044] In this embodiment, the hole H1 formed in the upper surface 41 and the hole H2 formed in the lower surface 42 are not formed at the same position when viewed in the longitudinal direction. Note that, in the present invention, "the same position in the longitudinal direction" means, for example, when hole H1 formed in the upper surface 41 is viewed from directly above the upper surface 41, only hole H2 formed in the lower surface 42 is visible, and region R2 (between holes H2) present in the lower surface 42 cannot be seen at all.

[0045] In this embodiment, hole H1 formed in upper surface 41 and hole H2 formed in lower surface 42 are not formed at the same position in the longitudinal direction, and therefore are arranged so that when hole H1 formed in upper surface 41 is viewed from directly above upper surface 41, region R (region R2) between holes H2 and H2 present on lower surface 42 can be confirmed. Similarly, when hole H2 formed in lower surface 42 is viewed from directly above lower surface 42, region R (region R1) between holes H1 and H1 present on upper surface 41 can be confirmed.

[0046] In the present embodiment, holes H (H1, H2) that pneumatically communicate with the internal cavity 47 are formed in each (on both sides) of the upper surface 41 and the lower surface 42 of the ring-shaped member 4 (multiple holes are formed in the present embodiment), so that when the interior member 5 described below is molded and the ring-shaped member 4 is attached by insert molding, the constituent material of the interior member 5 (the resin material that constitutes the interior member 5) enters the internal cavity 47 of the ring-shaped member 4 from the holes H in the upper surface 41 and the lower surface 42 as part of the interior member 5 (flange portion 57 of the interior member 5), ensuring that the ring-shaped member 4 and the interior member 5 are integrated together, and ultimately ensuring that the interior member 5 and the exterior case 2 are fixed together.

[0047] As shown in FIG. 9 , which will be described later, the flange portion 57 of the interior member 5 and the ring-shaped member 4 are fixed and integrated (fixed and integrated) by a portion of the flange portion 57 entering the inside of the ring-shaped member 4 through a hole H1 in the upper surface 41 and a hole H2 in the lower surface 42 of the ring-shaped member 4 with the main body portion 56 of the interior member 5 inserted into the hollow portion 43 of the ring-shaped member 4.

[0048] Specifically, main body 56 of interior member 5 is inserted into hollow portion 43, and portions of flange portion 57 fit through multiple holes H formed in upper surface 41 and lower surface 42, thereby fixing flange portion 57 to ring-shaped member 4 and fixing (flange portion 57 of) interior member 5 to ring-shaped member 4. As will be described later, by fixing ring-shaped member 4 to opening 21 of outer case 2 with (flange portion 57 of) interior member 5 fixed to ring-shaped member 4 in this manner, interior member 5 is reliably and stably fixed to opening 21 of outer case 2, and flange portion 57 will not tear off during use, causing interior member 5 to become detached from outer case 2. Furthermore, there is no need for the assembly work of clamping the periphery of flange portion 57 into opening 21 of outer case 2, simplifying assembly and resulting in an ejaculation promoter 1 with excellent operability.

[0049] In this embodiment, the positions of hole H1 on the upper surface 41 and hole H2 on the lower surface 42 of the ring-shaped member 4 are shifted, and hole H2 on the lower surface 42 is not located directly below hole H1 on the upper surface 41 (region R2 formed between holes H2 and H2 is located), and hole H1 on the upper surface 41 is not located directly above hole H2 on the lower surface 42 (similarly, region R1 formed between holes H1 and H1 is located). Therefore, hole H1 formed on the upper surface 41 and hole H2 formed on the lower surface 42 of the ring-shaped member 4 are not formed at the same position in the longitudinal direction.

[0050] With this configuration, when this ring-shaped member 4 is attached to a frame mold 9 of an injection molding die 7 described below and insert-molded, when the constituent material of the interior member 5 (the resin material that constitutes the interior member 5) made of synthetic resin is filled into the cavity 47 inside the ring-shaped member 4 from the hole H1 in the upper surface 41 and the hole H2 in the lower surface 42, the region R that is the portion between the holes H acts as a sort of wall through which the filled constituent material flows, preventing it from leaking out from inside the ring-shaped member 4. As a result, the constituent material of the flange portion 57 (the constituent material of the interior member 5) is more likely to remain in the cavity 47 inside the ring-shaped member 4, and therefore the constituent material of the flange portion 57 of the interior member 5 is efficiently fixed together with the interior member 5.

[0051] The exterior case 2, lid 3, and ring-shaped member 4 described above can be made of, for example, conventionally known synthetic resins or metal materials, and from the standpoints of lightness, processability, cost, etc., it is preferable that they be made of synthetic resins, etc. For example, the exterior case 2 can be made of high-density polyethylene (HDPE), etc., and the lid 3 and ring-shaped member 4 can be made of synthetic resins (thermoplastic resins, etc.) such as polyolefin resins such as polypropylene (PP) and ABS (acrylonitrile butadiene styrene), but are not particularly limited to these.

[0052] (V) Interior material 5: Next, we will explain the interior member 5, which is a tubular member 5 with at least one open end that is housed in the housing section 26, which is the internal space of the exterior case 2. Fig. 7 is a view of the interior member 5 from the direction of the insertion opening 51, Fig. 8 is a perspective view showing the internal structure of the interior member 5, and Fig. 9 is a perspective view showing the internal structure of the ejaculation promoter 1. Note that Figs. 7 and 9 show the interior member 5 and the ring-shaped member 4 integrated together.

[0053] The interior member 5, which is also generally called the core member and which constitutes the ejaculation promoter 1 according to this embodiment, is housed in the housing section 26, which is a space formed inside the exterior case 2, and is a tubular member 5 with one end where the insertion opening 51 is formed, located in the opening 21 of the exterior case 2, and the other end located inside the exterior case 2, with one end open by the insertion opening 51.

[0054] A substantially disk-shaped flange portion 57 is formed at one longitudinal end of the interior member 5 (the end located on the opening 21 side of the exterior case 2), and as shown in Figure 7 and other figures, an insertion opening 51 is formed as an opening in the approximate center of the flange portion 57. Furthermore, as shown in Figure 8 and other figures, an insertion portion 52 connected to the insertion opening 51 is formed inside the interior member 5.

[0055] In this embodiment, the device is comprised of a main body 56 having an insertion section 52 formed therein, which has a space for inserting the user's penis (not shown), and a substantially disk-shaped flange 57 formed at one end of the main body 56, with the main body 56 and flange 57 being integrally formed.

[0056] The interior member 5 has a generally rod-shaped (cylindrical) main body 56 with a flange 57 at one end so that it can be accommodated in accordance with the shape of the accommodation section 26 of the outer case 2, but generally, accommodation section 26, which is the space formed between the outer case 2, is often filled with a cushioning material K, typically a sponge, in the gap between the outer case 2 and the interior member 5. In this embodiment, the interior wall surface of the outer case 2 and the interior member 5 are not actively fixed together due to the presence of the cushioning material K.

[0057] The interior member 5 has an insertion section 52 formed in the longitudinal direction so as to connect to the interior from an insertion opening 51 formed approximately at the center of the flange section 57, and a portion (stimulation section 53) that stimulates the user's penis (not shown) is formed on the inner wall of the insertion section 52. Examples of the shape of the portion (stimulation section 53) that stimulates the penis include, for example, protrusions, folds, warts, bellows, etc. that imitate the internal shape of a woman's vagina, and these stimulation sections 53 can be formed in a predetermined arrangement. Figure 8 and other figures show an embodiment in which a wart shape, which is an example of stimulation section 53, is formed in a predetermined arrangement.

[0058] It is preferable that the stimulation section 53 adopts a different shape and arrangement near the insertion opening 51 and near the approximate center of the insertion section 52. In this way, it is possible to give a different type of stimulation to one part of the penis (for example, the glans) than to other parts.

[0059] The synthetic resin that constitutes the interior member 5, including the flange portion 57, is ideally made of a material with appropriate elasticity, stretchability, and flexibility, and is preferably made of, for example, a gel-like resin material such as various elastomers (styrene-based elastomers, thermoplastic elastomers, etc.), gel-like rubber, various rubber materials, silicone-based resins, polystyrene-based resins, or other resin materials. Also, for example, the constituent materials (constituent resin materials) of the interior member (cylindrical member) disclosed in JP 2016-96835 A can be used (note that the synthetic resin that constitutes the interior member 5, which is the cylindrical member 5, will hereinafter also be referred to as the "constituent material" (constituent resin material) or simply as the "resin material").

[0060] Regarding the manufacture of the ejaculation promoter 1, the ejaculation promoter 1 shown in FIG. 1 and the like can be assembled and manufactured as follows.

[0061] First, the main body 56 of the interior member 5 is inserted into the hollow portion 43 of the ring-shaped member 4 to form the interior member 5 with the flange portion 57 integrated with the ring-shaped member 4. Next, to accommodate the interior member 5 and other components in the exterior case 2, the main body 56 of the interior member 5, which is wrapped around itself with cushioning material K, is inserted through the opening 21 of the exterior case 2 to accommodate the main body 56 in the accommodation portion 26 of the exterior case 2, and the interior member 5 is then accommodated in the exterior case 2 with the flange portion 57 integrated with the ring-shaped member 4 protruding from the opening 21 of the exterior case 2. Then, by removably attaching the lid 3 to the opening 21, the ejaculation enhancer 1 shown in FIG. 1 etc. is completed.

[0062] To use the ejaculation promoter 1, first, the lid 3 of the exterior case 2 of the ejaculation promoter 1 is removed to open the opening 21 of the exterior case 2. Next, the user's penis is inserted into the insertion part 52 through the insertion opening 51 formed in the flange part 57, which can be seen from the opening 21 of the open exterior case 2.

[0063] After inserting the penis from insertion opening 51 into insertion section 52, the user grasps ejaculation enhancer 1 and moves it up and down appropriately, preferably along the longitudinal direction of the penis, whereby the penis is stimulated by stimulation section 53, such as a wart or bellows shape, formed inside insertion section 52 of interior member 5. In addition, when the user grips exterior case 2 of ejaculation enhancer 1, the penis is compressed by interior member 5 through the space in storage section 26 of exterior case 2, transmitting a feeling of tightness.

[0064] After the user ejaculates through the above-mentioned operation, the penis is removed from the ejaculation promoter 1, and the desired amount of sperm (semen) is collected from the insertion opening 51 (a dropper or the like may be inserted and sucked). At the same time, sperm (semen) and the like remaining in the insertion portion 52 and the like, which is the internal space of the interior member 5, are washed away.

[0065] (VI) Regarding the rod-shaped mold 8 and the divided members A to E that constitute the rod-shaped mold 8: To manufacture the interior member 5 having the configuration shown in FIG. 7 and the like, which is a tubular member 5 with at least one opening, used in the ejaculation enhancer 1 shown in FIG. 1 and the like, it can be easily manufactured by injection molding using the above-mentioned synthetic resin (the resin material applied as the synthetic resin that constitutes the interior member 5 including the flange portion 57) using a mold (injection molding mold 7) that is a combination of a rod-shaped mold 8, which is a mold that includes a rod-shaped portion 81 (see FIG. 10 and the like), and a frame-shaped mold 9, which are capable of forming the shape of the interior member 5.

[0066] In the present invention, the rod-shaped mold 8, the frame-shaped mold 9, and the injection molding mold 7 are specifically: A mold including a rod-shaped portion 81 for molding the internal shape of a cylindrical member 5 (interior member 5) having at least one opening by injection molding using a synthetic resin, A cylindrical recess 91 is formed with an opening 93 on one side, and the rod-shaped portion 81 is inserted from the longitudinal direction through the opening 93 of the recess 91, thereby forming a space 6 between the rod-shaped portion 81 and the recess 91. The rod-shaped portion 81 is used in combination with a frame-shaped mold 9 for molding the external shape of the cylindrical member 5 (interior member 5) by injection molding, The rod-shaped portion 81 is formed by combining members A, B, C, D, and E which are divided into a plurality of parts in the longitudinal direction. The molded article can be manufactured by injection molding using a rod-shaped mold 8, a frame-shaped mold 9, and an injection molding die 7 formed by combining these, which have basic configurations. Note that the rod-shaped portion 81 in the rod-shaped mold 8 in the present invention is a concept that includes not only a member constituting a shape extending in a direction parallel to the longitudinal direction, but also a member formed in a direction different from the direction parallel to the longitudinal direction; for example, the rod-shaped portion 81 in this embodiment also includes a divided member A formed so as to extend in a direction perpendicular to the longitudinal direction.

[0067] Fig. 10 is a diagram showing one embodiment of a rod-shaped mold 8. The rod-shaped mold 8 shown in Fig. 10 serves as a core mold, and is a mold including the portions that will form the internal shape of the interior member 5 of the ejaculation promoter 1 (such as the insertion opening 51, insertion portion 52, and stimulation portion 53) and the portion that will form the shape of the flange portion 57. Note that Fig. 11 depicts the rod-shaped portion 81 with an axis 85 present inside. Furthermore, the rod-shaped portion 81 is formed from divided members A, B, C, D, and E (hereinafter, the reference numerals may be "A to E").

[0068] In the case of the internal member 5 of the ejaculation promoter 1 shown in Fig. 7 and other figures, the portion that will become the internal shape of the internal member 5 includes the rod-shaped portion 81 (portion that forms the insertion portion, etc.) and the flange-forming portion 82, which will become the shape of the insertion portion 52, etc. (which will become the internal shape). The flange-forming portion 82 also forms the shape of the insertion opening 51. The shapes of the divided members A to E that form the rod-shaped portion 81 shown in Fig. 10 (and Fig. 12 and subsequent figures described below) will appear as they are as the internal shape, etc. of the internal member 5 (cylindrical member 5) shown in Figs. 8 and 9.

[0069] Fig. 11 is a diagram showing a state in which all of the divided members A to E that form the rod-shaped portion 81 have been removed from the rod-shaped mold 8. As shown in Fig. 11, in a state in which all of the divided members A to E have been removed, in the present embodiment, a flange portion forming portion 82 that forms the shape of the flange portion 57 and a ring-shaped member accommodating portion 83 that accommodates the ring-shaped member 4 for performing insert molding are formed in a concave shape on the upper surface of the base 84 of the rod-shaped mold 8.

[0070] Furthermore, a rod-shaped shaft 85 having a screw thread formed at its tip is fixed and formed upright on the base 84 of the rod-shaped mold 8 from approximately the center of the portion where the flange-forming portion 82 and the ring-shaped member accommodating portion 83 are formed. The rod-shaped shaft 85 is used to insert and fix the divided members A to E. The rod-shaped mold 8 of this embodiment includes the base 84 and a rod-shaped shaft fixed upright on the base 84, and the rod-shaped portion 81 of the rod-shaped mold 8 is formed by attaching the divided members A to E to the shaft 85. In this way, the divided members A to E are formed to be removable from (the shaft 85 of) the rod-shaped mold 8.

[0071] 12 is a diagram showing one aspect of divided members A to E. In this embodiment, these divided members A to E also have a hole N (the hole N formed in member E is not a through hole, but a non-through hole (e.g., a concave hole) is also included in the term hole) formed so as to pass through the center in the longitudinal direction, and are made insertable onto the rod-shaped shaft 85 described above, and a rod-shaped member is formed by inserting shaft 85 into the hole N formed in such members A to E.

[0072] In Figure 12, the divided members A to E are inserted in the order of member A → member B → member C → member D → member E when viewed from the side of the flange portion forming portion 82 and the ring-shaped member accommodating portion 83 (hereinafter, these may be collectively referred to as "flange portion forming portion 82, etc."), for example, and are fixed in this order in the longitudinal direction.

[0073] On the other hand, the divided members A to E do not necessarily have to be aligned and fixed in this order, and there is no restriction on the order in which the divided members A to E are inserted when viewed from the side of the flange forming portion 82, etc., in the order member A → member C → member D → member B → member E, and then aligned and fixed in this order in the longitudinal direction. In this way, the shape of the rod-shaped portion 81 of the rod-shaped die 8, which is the portion that forms the internal shape of the tubular member 5 (interior member 5), can be appropriately changed by adjusting the order in which the divided members A to E are attached, so that the variety of shapes of the rod-shaped portion 81 of the rod-shaped die 8 can be increased, and ultimately the variety of internal shapes of the tubular member 5 (interior member 5) to be formed can be increased.

[0074] As shown in Figure 10, among the divided parts A to E, part E is always attached to the tip of the axis 85 formed in the rod-shaped mold 8, and therefore will be located in the same place regardless of the above-mentioned variations.

[0075] The divided members A to E that make up the rod-shaped portion 81 are each small and compact, so they can be manufactured (shaped) from metal materials such as conventionally known hard metal materials used in molds, such as carbon tool steel and alloy tool steel, as well as materials used for molding with 3D printers, such as so-called rigid resins like Resin Rigid 10K and so-called heat-resistant resins. Such rigid resins are inexpensive, so the cost of the mold can be reduced.

[0076] Here, as for the production of dies, while dies made of metal materials such as hard metal materials have been produced by cutting or the like, dies such as the rod-shaped portion 81 of the rod-shaped die 8 are difficult to process due to their long longitudinal shape, and the cost of the metal material and processing costs during production are high, resulting in high costs and requiring a long time to produce, as mentioned above.

[0077] Furthermore, the internal shape of the tubular member 5, such as the interior member 5 of the ejaculation enhancer 1 shown in Figure 8, is often required to be precise, and machining the rod-shaped portion 81 of the rod-shaped mold 8 to form such a precise shape is difficult. However, because the rod-shaped mold 8 and the rod-shaped portion 81 are made by cutting hard metal material, if a mistake is made, such as cutting too much, it cannot be restored to its original state and the process must be started over from the beginning.

[0078] The rod-shaped mold 8 shown in Figure 10 etc. is formed from divided parts A to E, and the rod-shaped part 81 is used to form the internal shape of the tubular member 5 to be molded. As mentioned above, the size of each part is small and compact, so it is easier to manufacture than when making long rod-shaped members, and the yield is good, so it can be manufactured at low cost.

[0079] Furthermore, rigid resin (also called engineering resin) has good processability, so that the rod-shaped mold 8 itself can be easily manufactured, and the rod-shaped portion 81 of the mold (rod-shaped mold 8) made of rigid resin is preferable because the shape can be easily modified even after manufacturing. As the rigid resin, for example, a conventionally known material such as Rigid 10K Resin (manufactured by Formlabs) can be used.

[0080] Furthermore, because the rod-shaped mold 8 and the rod-shaped portion 81 are long in the longitudinal direction, they had to be manufactured by cutting hard metal material, etc. However, the divided members A to E that make up the rod-shaped portion 81 are small in size and compact, so at least the rod-shaped member 81 (divided members A to E) can be manufactured (shaped) using the aforementioned rigid resin, etc., with a 3D printer, etc., which is preferable because the mold can be manufactured easily, at low cost, and in a short time.

[0081] The means for producing (shaping) the rod-shaped portions 81 (divided members A to E) of the rod-shaped mold 8 using a material such as rigid resin with a 3D printer or the like may be carried out using conventionally known means using a 3D printer (shape setting (print setting, etc.), printing, cleaning, drying, etc.). Also, the means for producing the rod-shaped portions 81 (divided members A to E) using a metal material such as a conventionally known hard metal material used in molds may be produced using conventionally known means related to mold production (cutting, etc.). The fact that known means may be used to manufacture the mold also applies to the rod-shaped mold 8 and the frame-shaped mold 9 described below.

[0082] (VII) Method for manufacturing the interior member 5 (cylindrical member 5) by injection molding: Next, an example of a method for manufacturing an interior member 5 (cylindrical member 5) having the shape shown in FIG. 7 and the like by injection molding using a rod-shaped mold 8 such as that shown in FIG. 10 and the like, or an injection molding mold 7 formed by combining such a rod-shaped mold 8 with a frame-shaped mold 9 described later, will be described.

[0083] (1) Step of attaching the ring-shaped member 4 to a rod-shaped mold 8: To manufacture the interior member 5 having the ring-shaped member 4 attached to the flange portion 56, first, the ring-shaped member 4 that has been formed in advance is attached to the rod-shaped mold 8 shown in FIG. 10 as shown in FIG. 13.

[0084] Fig. 13 is a diagram showing a state in which the ring-shaped member 4 is attached to the rod-shaped mold 8. As shown in Fig. 13, the ring-shaped member 4 is attached with the upper surface 41 facing up (the direction in which the tip of the rod-shaped portion 81 (the portion forming the insertion portion, etc.) is located) so as to be fitted into a ring-shaped member accommodating portion 83 (see Fig. 10) formed above the bottom surface of the flange portion forming portion 82 of the base 84.

[0085] (2) A step of attaching divided members A to E for forming the shape of the interior of the interior member 5 and the flange portion 57 to a rod-shaped mold 8: After the ring-shaped member 4 is attached to the rod-shaped mold 8, the divided members A, B, C, D and E are attached to a rod-shaped shaft 85 fixed upright on the base 84 of the rod-shaped mold 8 by inserting them into the holes N formed in each of the divided members A to E in this order when viewed from the side of the flange portion forming portion 82, etc.

[0086] Figure 14 is a diagram showing the state in which divided member A has been attached to the rod-shaped mold 8, Figure 15 is a diagram showing the state in which divided member B has been attached to the rod-shaped mold 8, Figure 16 is a diagram showing the state in which divided member C has been attached to the rod-shaped mold 8, Figure 17 is a diagram showing the state in which divided member D has been attached to the rod-shaped mold 8, and Figure 18 is a diagram showing the state in which divided member E has been attached to the rod-shaped mold 8.

[0087] As shown in Figures 14 to 18, holes N formed in divided members A, B, C, and D (sometimes referred to as "A to D") are inserted into threaded shaft 85 and attached in that order, and then divided member E is screwed in last. On the other hand, by forming threads inside hole N formed in divided member E attached to the tip of shaft 85 and screwing it onto the tip of shaft 85 which is similarly threaded, not only divided member E but also divided members A to D can be fixed to shaft 85 by pressing divided members A to D located below downward and fixing them, without having to form threads inside holes N of divided members A to D.

[0088] With this configuration, there is no need to form threads in the holes N of the divided members A to D, and therefore the divided members A to D can be manufactured at low cost. Of course, threads that can be screwed onto the threads of shaft 85 may be formed not only in divided member E but also in the interiors of the holes N of the divided members A to D, so as to fix them to shaft 85.

[0089] (3) A process of attaching a frame-shaped mold 9 for forming the outer shape of the interior member 5 to the rod-shaped mold 8 to which the ring-shaped member 4 and the divided members A, B, C, D, and E are attached, and clamping the mold: The frame-shaped mold 9 for forming the shape of the interior member 5 is a mold that can be combined with the rod-shaped mold 8 to form the external shape (and internal shape) of the interior member 5, which is a tubular member 5.

[0090] Fig. 19 is a diagram showing the rod-shaped die 8 and frame-shaped die 9 assembled together, and Fig. 20 is a diagram showing the internal structure of Fig. 19. As shown in Fig. 19 and Fig. 20, the frame-shaped die 9 serves as a cavity die, and is shaped so that the rod-shaped die 8 to which the ring-shaped member 4 and rod-shaped portion 81 (divided members A to E) are attached can be attached (fitted) inside it so as to cover the rod-shaped die 8.

[0091] The rod-shaped mold 8 is attached to the frame-shaped mold 9 and clamped. The rod-shaped mold 8 and frame-shaped mold 9 are combined to form the injection molding mold 7, which is capable of molding the shape of the tubular member 5 (inner member 5), and the frame-shaped mold 9 has a recess 91 (inner member forming portion 91) hollowed out inside to match the outer shape of the inner member 5 so that the outer shape etc. of the inner member 5 can be formed.

[0092] The rod-shaped portion 81 of the rod-shaped mold 8 is inserted longitudinally into a recess 91 that has been hollowed out into a cylindrical shape with an opening 93 on one side of the frame-shaped mold 9, through the opening 93 of the recess 91. A space 6 is formed between the rod-shaped portion 81 of the rod-shaped mold 8 and the recess 91, and a constituent material of the interior member 5 made of synthetic resin is injected in a molten state into the space 6, thereby forming the external shape (and internal shape) of the interior member 5 (cylindrical member 5) by injection molding.

[0093] Specifically, as described above, by injecting molten synthetic resin (resin material) into the space 6 formed between the rod-shaped mold 8 and the recess 91 during injection molding, the shape of the rod-shaped portion 81 of the rod-shaped mold 8 appears (is transferred) on the inner surface of the space 6, becoming the internal shape of the tubular member 5 (inner member 5), and the shape of the inner surface of the recess 91 of the frame-shaped mold 9 appears (is transferred) on the outer surface of the space 6, thereby molding it into the external shape of the tubular member 5 (inner member 5).

[0094] (4) A step of injecting a constituent material of the interior member 5 in a molten state into the frame-shaped mold 9, and the constituent material forming the shape of the interior member 5 and a part of the flange portion 57: In this manner, with the frame-shaped mold 9 having the rod-shaped mold 8 attached to the recess 91 formed inside closed, the constituent material of the interior member 5, which is synthetic resin (the resin material that constitutes the interior member 5), is injected in a molten state into the space 6 formed between the rod-shaped portion 81 of the rod-shaped mold 8 and the recess 91 inside the frame-shaped mold 9 from the side where the material injection port 92 is formed.

[0095] When the molten constituent material is injected, it fills the irregularities formed on the surface of the rod-shaped portion 81 of the rod-shaped mold 8 and the space 6 formed between the rod-shaped portion of the rod-shaped mold 8 and the recess of the frame-shaped mold, thereby forming the shape of the interior member 5 including the main body portion 56 (including the internal shape of the insertion port 21, the insertion portion 52, the stimulation portion 53, etc.) and the flange portion 57. The molding temperature may be determined appropriately depending on the constituent material (resin material) used, etc., and is preferably 130 to 190°C, and particularly preferably 160 to 180°C, but is not particularly limited to these ranges.

[0096] In this embodiment, a molten synthetic resin constituent material (resin material constituting the interior member 5) enters the cavity 47 inside the ring-shaped member 4 as part of the flange portion 57 from holes H (holes H1, H2) formed on the upper surface 41 and lower surface 42 of the ring-shaped member 4 attached to the rod-shaped mold 8, and is solidified by cooling performed in a subsequent process, thereby fixing and integrating the flange portion 57 of the interior member 5 and the ring-shaped member 4. Fig. 21 is a diagram showing the state in which the molten constituent material has been filled and the interior member 5 has been formed around the rod-shaped mold 8, and Fig. 22 is a diagram of the internal structure of Fig. 21.

[0097] In this embodiment, when a molten synthetic resin material is injected into the injection mold 7, which is made up of the rod-shaped mold 8 and the frame-shaped mold 9, the material flows into the internal cavity 47 through the hole H1 in the upper surface 41 and the hole H2 in the lower surface 42, forming part of the flange portion 57. Beyond the hole H is a region R (R1, R2) on the other surface (the lower surface 42 in the case of the upper surface 41, and the upper surface 41 in the case of the lower surface 42), and the region R between the holes H acts as a sort of wall through which the molten resin material flows, and the material also hits this region R and remains in the cavity 47, making it difficult for it to escape (leak) to the outside.

[0098] Specifically, even if the molten material enters cavity 47 through hole H1 formed in upper surface 41, it will collide with region R2 of lower surface 42. Similarly, even if the molten material enters cavity 47 through hole H2 formed in lower surface 42, it will collide with region R1 of upper surface 41.

[0099] As a result of the above, the molten constituent material (resin material) remains and fills the internal cavity 47, and then, upon subsequent cooling, it solidifies and becomes integrated with the external constituent material that forms the flange portion 57, and a portion of the flange portion 57 (its constituent material) enters the internal cavity 47 through the hole H of the ring-shaped member 4 and is fixed and integrated.

[0100] (5) cooling the molten constituent materials: After the injection of the molten constituent material is completed, the material is cooled and solidified, and then the frame-shaped mold 9 is opened. The cooling may be by water cooling or natural cooling, but water cooling is preferred.

[0101] FIG. 23 is a diagram showing the state in which the frame-shaped mold 9 has been removed and the interior member 5 has been formed around the rod-shaped mold 8. As shown in FIG. 23, when the frame-shaped mold 9 is removed, the rod-shaped mold 8 around which the interior member 5 has been formed is revealed (in FIG. 23, the rod-shaped portion 81 is hidden because it is covered by the interior member 5). The constituent material of the interior member 5 (the resin material used to form the interior member 5) covers the rod-shaped portion 81 (the portion 81 forming the insertion portion, etc.) as the main body portion 56 in the clamped state, forming the insertion portion 52, etc. so that the shape of the rod-shaped portion 81 appears inside, and the stimulation portion 53 is formed in the insertion portion 52. In addition, the flange portion forming portion 82 forms the flange portion 57 and the insertion opening 51, which is an insertion hole connected to the insertion portion 52, etc.

[0102] Furthermore, the flange portion 57 is formed by the constituent material of the inner member 5 (of the flange portion 57) entering the cavity 47 inside through holes H formed in the upper surface 41 and the lower surface 42 of the ring-shaped member 4, a part of which was attached to the rod-shaped mold 8 in advance, and then cooling and solidifying, whereby the flange portion 57 of the inner member 5 and the ring-shaped member 4 are fixed and integrated together.

[0103] (VIII) Effects of the present invention: The rod-shaped mold 8 according to the present invention described above is formed from divided members A to E, and the rod-shaped portion 81 is used to form the internal shape of the interior member 5 (cylindrical member 5) to be molded. Each of these divided members A to E is small and compact, making it easier to manufacture than when making a long rod-shaped member, and since the yield is good, it can be manufactured at low cost. Furthermore, the rod-shaped portion 81 can be made from rigid resin in addition to metal materials such as hard metal materials, in which case it can also be manufactured using a 3D printer, etc. Not only can the mold be manufactured easily, at low cost, and in a short time, but the shape can also be easily modified after manufacturing.

[0104] Furthermore, the rod-shaped mold 8 according to the present invention can change the shape of the rod-shaped portion 81, which is the portion that forms the internal shape of the interior member 5 (cylindrical member 5), as appropriate by adjusting the order in which the divided members A to E are attached, so that it is possible to increase the variety of shapes of the rod-shaped portion 81 of the rod-shaped mold 8, and ultimately to increase the variety of internal shapes of the interior member 5 (cylindrical member 5) that is formed.

[0105] The injection molding die 7 according to the present invention is a combination of the rod-shaped die 8 according to the present invention described above and a frame-shaped die 9 for forming the external shape of the tubular member 5, and therefore enjoys the effects achieved by the rod-shaped die 8 according to the present invention described above.

[0106] The manufacturing method of the tubular member 5 according to the present invention is carried out using the injection molding die 7 according to the present invention described above, and therefore, the effects achieved by the injection molding die 7 according to the present invention described above can be advantageously enjoyed.

[0107] (IX) Variations of the embodiment: The above-described aspects show only one aspect of the present invention, and the present invention is not limited to the above-described embodiments. It goes without saying that modifications and improvements that have the configuration of the present invention and that can achieve the objects and effects of the present invention are included in the content of the present invention. Furthermore, the specific structure and shape, etc., used when implementing the present invention may be changed to other structures and shapes, etc., as long as the objects and effects of the present invention can be achieved. The present invention is not limited to the above-described embodiments, and modifications and improvements that can achieve the objects of the present invention are included in the present invention.

[0108] In the above-described embodiment, the interior member 5 shown in FIG. 7 and the like, which is used in the ejaculation promoter 1 shown in FIG. 1 and the like, has been described as an example of the tubular member 5 having at least one opening, which is molded by the rod-shaped mold 8 and the injection molding die 7 consisting of the rod-shaped mold 8 and the frame-shaped mold 9.

[0109] On the other hand, the molded tubular member 5 may be made of synthetic resin and may have at least one opening, and is not limited to being an interior member of the ejaculation promoter 1. For example, the tubular member 5 may be used as the ejaculation promoter 1 (or may become the ejaculation promoter 1 itself).

[0110] An example in which the cylindrical member 5 functions as the ejaculation promoter 1 by itself will be described below with reference to FIGS. 24 and 25. FIG. The same structures and members as those in the above-described embodiment are denoted by the same reference numerals, and detailed descriptions thereof will be omitted or simplified.

[0111] Figure 24 is a front view showing one embodiment of the ejaculation promoter 1 which is a tubular member 5, and Figure 25 is a diagram showing the internal structure of Figure 24. The ejaculation promoter 1 shown in Figure 24 etc. is basically composed of a tubular member 5 which has an insertion opening 51 at at least one end in the longitudinal direction and has an insertion section 52 formed inside which serves as a space extending from the insertion opening 51, and this tubular member 5 is used as the ejaculation promoter 1 (it becomes the ejaculation promoter 1 itself).

[0112] The ejaculation enhancer 1, which is a tubular member 5, has an insertion opening 51 at one end in the longitudinal direction, and an insertion section 52, which serves as a space extending from the insertion opening 51, formed inside. There are no particular limitations on the cylindrical shape as long as it can be gripped by the user's hand (not shown) when the penis (not shown) is inserted through the insertion section 52, which serves as a space extending from the insertion opening 51 to the interior. In this embodiment, as shown in FIG. 24 etc., an example is shown in which three small diameter sections 54, which are gently sloping in plan view at approximately the center in the longitudinal direction, and a large diameter section 55 having a diameter larger than the small diameter sections 54, are sandwiched between the three small diameter sections 54. The user can grip the device by placing their fingers on the boundary between the large diameter section 55 and the small diameter section 54, making it easy for the user to grip.

[0113] In this embodiment of the ejaculation enhancer 1, a portion for stimulating the penis (stimulation portion 53) is formed on the inner wall of the insertion portion 52, which is the space extending inward from the insertion opening 51. Examples of the shape of the portion for stimulating the penis (stimulation portion 53) include protrusions, folds, warts, and bellows, and these stimulation portions 53 can be formed in a predetermined arrangement.

[0114] The above-mentioned tubular member 5 (ejaculation promoter 1) can be easily molded by injection molding using the injection molding die 7 consisting of the rod-shaped die 8 and frame-shaped die 9 of the above-mentioned configuration, by the methods described in (VI) and (VII) above.

[0115] In the embodiments described so far, the inner casing 5 of the ejaculation promoter 1 and the ejaculation promoter 1 itself have been used as examples of the tubular member 5, but the tubular member 5 is not limited to these and can be any shape made of synthetic resin with at least one side open.

[0116] Furthermore, in the above-described embodiment, the interior member 5 of the ejaculation enhancer 1 is described as being formed integrally with a main body portion 56 having an insertion portion 52 with a space extending from the insertion opening 51 formed therein, and a substantially disk-shaped flange portion 57 formed at one end of the main body portion 56 on the side where the insertion opening 51 is formed, but this type of configuration is not essential for the interior member 5. For example, the presence of the ring-shaped member 4 and the formation of the flange portion 57 are not particularly essential, and the shape of the interior member 5 that becomes the tubular member 5 can be any shape made of synthetic resin with at least one side open, and the opening may also be formed not only at one end in the longitudinal direction but at both ends in the longitudinal direction.

[0117] Here, the "cylindrical member 5" that is the object to be molded in the present invention broadly encompasses anything with a shape that includes a cylindrical portion (having an internal space) with at least one open end (the "opening" corresponds, for example, to the insertion port 51 of the interior member 5, the "cylindrical portion (having an internal space)" corresponds, for example, to the main body portion 56 of the interior member 5, and the internal "space" corresponds, for example, to the insertion portion 52 of the interior member 5). Therefore, in addition to a so-called cylindrical (pipe-like) shape (an outer surface that is flat in the longitudinal direction, etc.), it is no problem to provide, for example, a portion formed in a direction parallel to the longitudinal direction or in a direction different from the longitudinal direction on the periphery or end of the cylindrical member 5 (for example, in this embodiment, providing a flange portion 57 at one end of the main body portion 56, etc.), or to provide a member separate from the cylindrical member 5 (for example, in this embodiment, the ring-shaped member 4), and these are included in the cylindrical member 5 as defined in the present invention.

[0118] In the above embodiment, the shape of the rod-shaped die 8 has been described using the configuration shown in Fig. 10 etc. as an example, but the shape and configuration of the rod-shaped die 8 are not limited to this, and the shapes of the multiple divided members A to E may also be arbitrary, as may the number of divided members A to E and the means for attaching them to the shaft. Furthermore, instead of the configuration using a shaft as shown in Fig. 11 etc., the divided members A to E may be fixed by conventionally known attachment means. In addition, the specific structure and shape when implementing the present invention may be other structures within the scope that can achieve the object of the present invention. [Industrial Applicability]

[0119] The present invention has extremely high industrial applicability as a means for providing, at low cost and simply, an injection molding die for injection molding using synthetic resin to form the internal shape of a tubular member with at least one opening, such as the interior member of an ejaculation promoter or the ejaculation promoter itself. [Explanation of symbols]

[0120] 1... Ejaculation accelerator 2 …… Outer case 21 …… Opening 22 …… Middle section 23,24 …… Upper section 25... Boundary 26 …… Storage area 27 …… Air hole 28 …… Edge (outer case) 3 …… Lid 31 …… Opening 32 …… Cylindrical section 4 …… Ring-shaped member 41 ...Top surface 42 ...Bottom surface 43 ……Hollow part 44 …… Side 441 …… 1st side 442 ……Second side 45 …… Gap 46 …… bottom 461 …… Edge (ring-shaped member) 47 …… hollow 5 …… Interior parts (cylindrical parts) 51 …… Insertion port 52 …… Insertion section 53 …… Stimulation part 54 …… Small diameter part 55 …… Large diameter section 56 …… Main body 57 …… Flange part 6... Space 7...Injection mold 8 …… Rod mold 81 …… Rod-shaped part (insertion part, etc.) 82 …… Flange forming section 83 …… Ring-shaped member storage section 84 …… Pedestal 85 …… Axis 9... Frame mold 91 …… Recess (interior component forming portion) 92 …… Material injection port 93 …… Opening (frame mold) A~E …… Divided parts H …… acupoint H1 …… Acupoint (above) H2 ... acupoint (below) N... hole (divided part material) R …… domain R1 ... Domain (above) R2 ... Domain (below) K... cushioning material

Claims

1. A mold including a rod-shaped portion for molding an internal shape of a cylindrical member having at least one opening by injection molding using a synthetic resin, a cylindrical recess is formed with an opening on one side, and the rod-shaped portion is inserted from the opening of the recess in the longitudinal direction to form a space between the rod-shaped portion and the recess, and the rod-shaped portion is used in combination with a frame-shaped mold for molding the external shape of the cylindrical member by injection molding; A rod-shaped mold, wherein the rod-shaped portion is formed by combining a plurality of members separated in the longitudinal direction.

2. With a base, a rod-shaped shaft fixed upright to the base, 2. The rod-shaped die according to claim 1, wherein the rod-shaped member is formed by inserting the shaft into holes formed in the plurality of divided members.

3. The rod-shaped mold according to claim 1 or claim 2, characterized in that a screw thread is formed on the shaft, and a screw thread that can be screwed into and fixed to the screw thread of the rod-shaped shaft is formed inside a hole formed in at least one of the plurality of divided members that is attached to the tip of the shaft.

4. The cylindrical member is an outer case having a cylindrical shape that has an opening at at least one end in the longitudinal direction and can be held by hand; an interior member that is housed in the exterior case with an end face having the insertion opening disposed at an opening of the exterior case; and an insertion section that is a space extending from the insertion opening and that is formed inside the housing section.

3. The rod-shaped mold according to claim 1, wherein the rod-shaped mold is the interior member of an ejaculation promoter.

5. 5. The rod-shaped mold according to claim 4, characterized in that the interior member, which is the tubular member, has a shape in which a main body portion having an insertion portion formed therein that serves as a space extending from the insertion port, and a substantially disk-shaped flange portion formed at one end of the main body portion on the side where the insertion port is formed, are integrally formed.

6. The rod-shaped mold according to claim 1 or 2, characterized in that the tubular member has an insertion opening at at least one end in the longitudinal direction, an insertion portion formed inside as a space extending from the insertion opening, and is used as an ejaculation promoter.

7. 3. The rod-shaped mold according to claim 1, wherein the rod-shaped portion is made of a rigid resin.

8. An injection molding die for molding a cylindrical member having at least one opening using a synthetic resin by injection molding, The rod-shaped mold according to claim 1 or 2; a frame-shaped mold having an opening on one side and a cylindrically hollowed-out recess formed therein, the frame-shaped mold being used to form an external shape of the cylindrical member by injection molding using a space formed between the rod-shaped portion and the recess by inserting the rod-shaped portion from the opening of the recess in the longitudinal direction; An injection molding die comprising:

9. A method for manufacturing a cylindrical member, in which a cylindrical member having at least one opening is molded by injection molding using a synthetic resin, comprising: A method for manufacturing a cylindrical member, wherein the cylindrical member is manufactured using the injection molding die according to claim 8.

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