Molded article of oral care article, oral care article, and manufacturing method for molded article of oral care article

Abstract

To provide a molded article of an oral care article whose design can be expected to be improved, the oral care article, and a manufacturing method for the molded article of the oral care article.SOLUTION: A toothbrush that is an oral care article includes a molded article 20. The molded article 20 includes a body 100, and a pressed structure 200 constituted so as to be capable of being pressed by an ejector pin. The pressed structure 200 includes a protruding part protruding with respect to the body 100.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a molded oral care product, an oral care product, and a method for manufacturing a molded oral care product. [Background technology]

[0002] Molded oral care products are manufactured by, for example, injection molding. The molded product is removed from the mold by an ejector pin. Patent Document 1 shows a toothbrush as an example of an oral care product. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-198796 Summary of the Invention [Problem to be solved by the invention]

[0004] When a molded product is pressed by an ejector pin, the ejector pin may leave marks on the molded product. If the marks are noticeable, the design of the molded product may be impaired. [Means for solving the problem]

[0005] The molded oral care product according to the present invention includes a main body and a pressure-receiving structure configured to be able to be pressed by an ejector pin, and the pressure-receiving structure includes a protrusion that protrudes relative to the main body.

[0006] The manufacturing method of the molded product includes an extrusion process in which the molded product is pushed by an ejector pin. With the above molded product, the protruding portion can be pushed by the ejector pin in the extrusion process. Therefore, the portion of the molded product that is pushed by the ejector pin (hereinafter referred to as the "pressed portion") is reduced. When the pressed portion of the molded product is reduced, it is expected that the design of the molded product will be improved.

[0007] Examples of a state in which the pressed portion is reduced in a molded product include a state in which there is no pressed portion in the molded product, and a state in which the area of ​​the pressed portion in relation to the main body of the molded product is smaller than in a molded product in which no protrusion is provided.

[0008] In one example of the molded oral care product, the protrusion is configured as a portion intended to be removed.

[0009] According to the above molded product, it is possible to manufacture a molded product that does not include a pressed portion of the protrusion.

[0010] In one example of the molded oral care product, the protrusion is connected to an end of the main body.

[0011] According to the above molded product, the influence of the protrusion on the design of the shape of the main body is reduced.

[0012] In one example of the molded oral care product, the protrusion is thinner than the main body.

[0013] According to the above molded product, the amount of material used to mold the protrusions can be reduced.

[0014] In one example of the molded oral care product, the protrusion is shorter than the main body.

[0015] According to the above molded product, the amount of material used to mold the protrusions can be reduced.

[0016] An example of the molded oral care product includes a primary molded portion and a secondary molded portion provided on the outer surface of the primary molded portion, the primary molded portion including a primary main body component that constitutes the main body and the protrusion, and the secondary molded portion including a secondary main body component that constitutes the main body.

[0017] According to the above molded product, the number of pressed portions can be reduced with respect to the secondary main body constituent portion.

[0018] In one example of the molded oral care product, the oral care product is a toothbrush.

[0019] The molded article is expected to improve the design of toothbrushes.

[0020] In one embodiment of the oral care product according to the present invention, the oral care product comprises a molded article of said oral care product.

[0021] According to the oral care product, it is expected that the design of the oral care product will be improved.

[0022] In one example of the oral care product according to the present invention, the oral care product includes a molded article of the oral care product in which the protruding portion is configured as a portion to be removed, and is in a state in which the protruding portion has been removed.

[0023] According to the oral care product, it is expected that the design of the oral care product will be improved.

[0024] Examples of a state in which the protrusion has been removed include a state in which the entire protrusion has been removed, and a state in which a portion of the protrusion has been removed and another portion of the protrusion remains in the molded product.

[0025] One example of a method for manufacturing a molded oral care product related to the present invention includes a main body and a pressable structure configured to be pressed by an ejector pin, the pressable structure including a protrusion that protrudes relative to the main body, and includes a molding process for molding a molded product within a mold, and an extrusion process for pushing the molded product with an ejector pin after the molding process is completed, and in the extrusion process, the ejector pin pushes the protrusion.

[0026] According to the above manufacturing method, the number of pressed portions in the main body can be reduced.

[0027] In one example of a method for manufacturing a molded product for an oral care product, the molded product includes a primary molded portion and a secondary molded portion provided on the outer surface of the primary molded portion, the primary molded portion includes a primary main body component that constitutes the main body and the protrusion, the secondary molded portion includes a secondary main body component that constitutes the main body, the molding process includes a primary molding process for molding the primary molded portion and a secondary molding process for molding the secondary molded portion, and the extrusion process includes a primary extrusion process for pushing the protrusion of the primary molded portion after the primary molding process is performed, and a secondary extrusion process for pushing the protrusion of the primary molded portion after the secondary molding process is performed.

[0028] According to the above manufacturing method, the number of pressed portions in the secondary molded portion can be reduced.

[0029] An example of the method for manufacturing a molded oral care product further includes a removing step of removing the protrusions after the extrusion step is performed.

[0030] According to the above manufacturing method, the number of pressed portions in the molded product can be reduced. When the extrusion process includes a first extrusion process and a second extrusion process, the removing process is carried out after the second extrusion process. [Effects of the Invention]

[0031] According to the molded oral care product, oral care product, and method for manufacturing a molded oral care product of the present invention, it is expected that the design of the molded product will be improved. [Brief explanation of the drawings]

[0032] [Figure 1] FIG. 1 is a front view of a toothbrush according to a first embodiment. [Figure 2] FIG. 2 is a side view of the toothbrush of FIG. 1. [Figure 3] FIG. 2 is a front view of the molded product of FIG. 1. [Figure 4] FIG. 2 is a side view of the molded product of FIG. 1. [Figure 5] An enlarged view of a portion of the molded product in Figure 3. [Figure 6] An enlarged view of a portion of the molded product in Figure 1. [Figure 7] FIG. 4 is a front view of the primary molding section of FIG. 3 . [Figure 8] FIG. 4 is a side view of the primary molding section of FIG. 3 . [Figure 9] FIG. 8 is an enlarged view of a portion of the primary molding part in FIG. 7. DETAILED DESCRIPTION OF THE INVENTION

[0033] (Oral care product description) Examples of oral care products include toothbrushes, interdental brushes, mucosal care brushes, floss with holders, and check mirrors.

[0034] The oral care product includes, for example, a molded article and a functional component. The molded article includes a main body. The configuration of the main body can be selected arbitrarily. The main body includes, for example, a handle, a neck, and a head. The handle is configured to be suitable for gripping by hand. The neck is provided between the handle and the head. The neck is connected to the handle and the head. The head is configured to support the functional component.

[0035] The molded product may be a single-color molded product or a multi-color molded product. An example of a multi-color molded product is a two-color molded product. A two-color molded product includes, for example, a first molded part and a second molded part.

[0036] Examples of materials for the single-color molded product include hard thermoplastic resins, soft thermoplastic resins, and soft thermosetting resins. The material for the single-color molded product is selected depending on, for example, the function of the oral care product.

[0037] When a rigid thermoplastic resin is selected as the material for the single-color molded article, the material for the single-color molded article may contain one type of rigid thermoplastic resin or two or more types of rigid thermoplastic resins.

[0038] When a soft thermoplastic resin is selected as the material for the single-color molded article, the material for the single-color molded article may contain one type of soft thermoplastic resin or two or more types of soft thermoplastic resins.

[0039] When a soft thermosetting resin is selected as the material of the single-color molded article, the material of the single-color molded article may contain one type of soft thermosetting resin or two or more types of soft thermosetting resins.

[0040] Examples of materials for the primary molded portion include hard thermoplastic resins, soft thermoplastic resins, and soft thermosetting resins. The material for the primary molded portion is selected depending on, for example, the function of the oral care product.

[0041] When a hard thermoplastic resin is selected as the material for the primary molded portion, the material for the primary molded portion may contain one type of hard thermoplastic resin, or two or more types of hard thermoplastic resin.

[0042] When a soft thermoplastic resin is selected as the material of the primary molded portion, the material of the primary molded portion may contain one type of soft thermoplastic resin or two or more types of soft thermoplastic resins.

[0043] When a soft thermosetting resin is selected as the material of the primary molding portion, the material of the primary molding portion may include one type of soft thermosetting resin or two or more types of soft thermosetting resin.

[0044] Examples of materials for the secondary molded portion include hard thermoplastic resins, soft thermoplastic resins, and soft thermosetting resins. The material for the secondary molded portion is selected depending on, for example, the function of the oral care product.

[0045] When a hard thermoplastic resin is selected as the material of the secondary molded portion, the material of the secondary molded portion may include one type of hard thermoplastic resin, or two or more types of hard thermoplastic resin.

[0046] When a soft thermoplastic resin is selected as the material of the secondary molded portion, the material of the secondary molded portion may include one type of soft thermoplastic resin or two or more types of soft thermoplastic resins.

[0047] When a soft thermosetting resin is selected as the material of the secondary molded portion, the material of the secondary molded portion may include one type of soft thermosetting resin or two or more types of soft thermosetting resin.

[0048] Examples of hard thermoplastic resins include olefin resins, polyamide resins, saturated polyester resins, polymethyl methacrylate, cellulose propionate, thermoplastic polyurethane, polycarbonate, polyacetal, and ABS (Acrylonitrile Butadiene Styrene) resin.

[0049] Examples of olefin-based resins include propylene-based polymers and ethylene-based polymers.

[0050] Examples of the propylene-based polymer include homopolymers, random copolymers, and block copolymers.

[0051] Examples of ethylene-based polymers include homopolymers, random copolymers, and block copolymers.

[0052] Examples of saturated polyester resins include polyethylene terephthalate, polybutylene terephthalate, polytrimethylene terephthalate, and polycyclohexylene dimethylene terephthalate.

[0053] Examples of thermoplastic resins classified based on their properties regarding the transmittance of visible light include opaque resins, semi-transparent resins, and transparent resins.

[0054] Examples of transparent resins include saturated polyester resins, acrylic resins, polycarbonates, polystyrene resins, AS (Acrylonitrile Styrene) resins, and silicone resins.

[0055] An example of a soft thermoplastic resin is a thermoplastic elastomer.

[0056] Examples of thermoplastic elastomers include polystyrene-based thermoplastic elastomers, polyolefin-based thermoplastic elastomers, vinyl chloride-based thermoplastic elastomers, polyurethane-based thermoplastic elastomers, polyester-based thermoplastic elastomers, polyamide-based thermoplastic elastomers, and polybutadiene-based thermoplastic elastomers.

[0057] An example of a soft thermosetting resin is a thermosetting elastomer. Examples of thermosetting elastomers include silicone-based thermosetting resins, urethane-based thermosetting resins, fluorine-based thermosetting resins, synthetic rubbers, and natural rubbers.

[0058] Examples of synthetic rubber include styrene butadiene rubber, butadiene rubber, chloroprene rubber, isoprene rubber, butyl rubber, ethylene propylene rubber, acrylonitrile butadiene rubber, silicone rubber, fluororubber, acrylic rubber, urethane rubber, polysulfide rubber, chlorinated butyl rubber, and epichlorohydrin rubber.

[0059] The functional member has a predetermined function related to oral care. The functional member is provided on the molded product. For example, the functional member is provided on the head of the main body.

[0060] An example of a functional component of a toothbrush is a tuft. Examples of a functional component of an interdental brush are a tuft and a rubber brush. Examples of a functional component of a mucosal care brush are a tuft, a rubber brush and a sponge brush. An example of a functional component of a floss holder is a dental floss. An example of a functional component of a check mirror is a mirror.

[0061] For example, a molded oral care product may have a first axial direction, a second axial direction, a first width direction, a second width direction, a first thickness direction, and a second thickness direction. The first axial direction is opposite to the second axial direction. The first width direction is opposite to the second width direction. The first thickness direction is opposite to the second thickness direction.

[0062] The axial direction is a general term for the first axial direction and the second axial direction. The axial direction is parallel to the X axis. The width direction is a general term for the first width direction and the second width direction. The width direction is parallel to the Y axis. The thickness direction is a general term for the first thickness direction and the second thickness direction. The thickness direction is parallel to the Z axis. The central axis of the molded oral care product is parallel to the axial direction.

[0063] The X and Y axes define a first reference plane. The X and Z axes define a second reference plane. The Y and Z axes define a third reference plane.

[0064] For example, the viewpoints of oral care products are defined as follows: The front view is the viewpoint when the oral care product is viewed from the first reference plane in the second thickness direction. The back view is the viewpoint when the oral care product is viewed from the first reference plane in the first thickness direction. The first side view is the viewpoint when the oral care product is viewed from the second reference plane in the second width direction. The second side view is the viewpoint when the oral care product is viewed from the second reference plane in the first width direction. The side view collectively refers to the first side view and the second side view.

[0065] The thickness of a molded product is defined, for example, as follows: The thickness of a molded product is indicated by the diameter of a cross section perpendicular to the central axis of the molded product.

[0066] (First embodiment) 1 and 2. In the first embodiment, the oral care product 10 is a toothbrush 10A. The toothbrush 10A includes a molded article 20 and a functional member 30. The molded article 20 is, for example, a two-color molded article.

[0067] The molded article 20 includes a main body 100. The configuration of the main body 100 can be selected arbitrarily. The configuration of the main body 100 is not limited to the configuration illustrated. The main body 100 includes, for example, a handle 110, a neck 120, and a head 130. The central axis of the main body 100 defines the central axis of the molded article 20.

[0068] The body 100 includes a first end 100A and a second end 100B. The first end 100A is located in a first axial direction relative to the axial center of the body 100. The second end 100B is located in a second axial direction relative to the axial center of the body 100.

[0069] The main body 100 includes a first side portion 100C and a second side portion 100D. The first side portion 100C is located in a first width direction relative to the center of the main body 100 in the width direction. The second side portion 100D is located in a second width direction relative to the center of the main body 100 in the width direction.

[0070] The handle 110 may have any configuration. The configuration of the handle 110 is not limited to the configuration shown in the example. The handle 110 is configured to be suitable for gripping. The head 130 is configured to support the functional member 30.

[0071] The handle 110 includes a first end 110A and a second end 110B. The first end 110A is located in a first axial direction relative to the axial center of the handle 110. The second end 110B is located in a second axial direction relative to the axial center of the handle 110. The second end 110B constitutes the second end 100B of the body 100.

[0072] The handle 110 includes a first side portion 110C and a second side portion 110D. The first side portion 110C is located in a first width direction relative to the center of the handle 110 in the width direction. The second side portion 110D is located in a second width direction relative to the center of the handle 110 in the width direction. The first side portion 110C constitutes the first side portion 100C of the main body 100. The second side portion 110D constitutes the second side portion 100D of the main body 100.

[0073] The configuration of the neck 120 can be selected arbitrarily. The configuration of the neck 120 is not limited to the configuration shown in the example. The neck 120 is provided between the handle 110 and the head 130. The neck 120 is connected to the handle 110. The neck 120 is connected to the head 130.

[0074] The neck 120 includes a first end 120A and a second end 120B. The first end 120A is located in a first axial direction relative to an axial center of the neck 120. The second end 120B is located in a second axial direction relative to the axial center of the neck 120. The second end 120B of the neck 120 connects to the first end 110A of the handle 110.

[0075] The neck 120 includes a first side 120C and a second side 120D. The first side 120C is located in a first width direction relative to the center of the neck 120 in the width direction. The second side 120D is located in a second width direction relative to the center of the neck 120 in the width direction.

[0076] The configuration of the head 130 can be selected arbitrarily. The configuration of the head 130 is not limited to the illustrated configuration. In one example, the head 130 is thin. The minimum thickness of the head 130 is equal to or less than the minimum thickness of the neck 120. In the illustrated example, the minimum thickness of the head 130 is smaller than the minimum thickness of the neck 120. The head 130 includes a plurality of openings 131. The openings 131 are provided with holes 132. The holes 132 open to a front surface 133 of the head 130.

[0077] The head 130 includes a first end 130A and a second end 130B. The first end 130A is located in a first axial direction relative to the axial center of the head 130. The first end 130A constitutes the first end 100A of the body 100. The second end 130B is located in a second axial direction relative to the axial center of the head 130. The second end 130B of the head 130 connects to the first end 120A of the neck 120.

[0078] The head 130 includes a first side portion 130C and a second side portion 130D. The first side portion 130C is located in a first width direction relative to the center of the head 130 in the width direction. The first side portion 130C constitutes the first side portion 100C of the main body 100. The second side portion 130D is located in a second width direction relative to the center of the head 130 in the axial direction. The second side portion 130D constitutes the second side portion 100D of the main body 100.

[0079] The configuration of the functional member 30 can be selected arbitrarily. The configuration of the functional member 30 is not limited to the configuration illustrated. In one example, the functional member 30 includes a plurality of tufts. Some of the tufts are disposed in the holes 132 and fixed to the head 130.

[0080] 3 to 6. The configuration of the molded article 20 can be selected arbitrarily. The configuration of the molded article 20 is not limited to the configuration shown in the example. In one example, the molded article 20 includes a primary molded portion P and a secondary molded portion Q.

[0081] The material of the primary molded portion P is selected taking into consideration, for example, the softening and hardening properties, the hardness and softness properties, and the transparency.

[0082] For example, a thermoplastic resin is selected in terms of softening and hardening properties, a hard resin is selected in terms of hardness and softness properties, and an opaque resin is selected in terms of transparency.

[0083] In one example, a hard and opaque thermoplastic resin is selected as the material of the primary molded portion P. For example, polyacetal or polypropylene is selected as the hard and opaque thermoplastic resin.

[0084] The material of the secondary molded portion Q is selected taking into consideration, for example, the softening and hardening properties, the hardness and softness properties, and the transparency.

[0085] For example, a thermoplastic resin is selected in terms of softening and hardening properties, a hard resin is selected in terms of hardness and softness properties, and a transparent or translucent resin is selected in terms of transparency.

[0086] In one example, a hard and transparent thermoplastic resin or a hard and translucent thermoplastic resin is selected as the material for the secondary molded portion Q. Examples of the hard and transparent thermoplastic resin include AS resin, ABS resin, and polycarbonate. Examples of the hard and translucent thermoplastic resin include polypropylene and polyethylene.

[0087] In one example, the molded article 20 includes a pressed structure 200. The pressed structure 200 is configured so that it can be pressed by an ejector pin. In the extrusion process for removing the molded article 20 from the mold, the pressed portion of the molded article 20 that constitutes the pressed structure 200 is pressed by one or more ejector pins.

[0088] In one example of a manufacturing method for the molded product 20, the extrusion process includes a first extrusion process and a second extrusion process. In the first extrusion process, the pressed portion of the primary molded portion P is pressed by the ejector pin. In the second extrusion process, the pressed portion of the secondary molded portion Q is pressed by the ejector pin.

[0089] The configuration of the pressed structure 200 can be selected arbitrarily. The configuration of the pressed structure 200 is not limited to the exemplified configuration. In one example, the pressed structure 200 includes a specific portion 210 and a protruding portion 220.

[0090] The configuration of the specifying portion 210 can be selected arbitrarily. The configuration of the specifying portion 210 is not limited to the exemplified configuration. In one example, the specifying portion 210 includes a pressed portion. The specifying portion 210 is provided on the head 130. The specifying portion 210 includes the front surface 133 of the head 130.

[0091] The configuration of the protrusion 220 can be selected arbitrarily. The configuration of the protrusion 220 is not limited to the exemplified configuration. In one example, the protrusion 220 includes a pressed portion. The protrusion 220 is configured to protrude relative to the main body 100. The protrusion 220 is configured so as to be pressed by an ejector pin.

[0092] In one example, the protrusion 220 is configured as a portion (hereinafter referred to as "portion to be removed 300") that is intended to be removed from the molded article 20. Figure 6 shows the second end 100B of the main body 100 from which the protrusion 220 has been removed.

[0093] The relationship between the protrusion 220 and the gate of the molded product 20 will be illustrated.

[0094] In the first example, the protrusion 220 is included in the primary molding part P. The protrusion 220 is configured as a part separate from the gate of the primary molding part P.

[0095] In the second example, the protrusion 220 is included in the primary molding part P. The protrusion 220 includes the gate of the primary molding part P.

[0096] In the third example, the protrusion 220 is included in the secondary molding portion Q. The protrusion 220 is configured as a portion separate from the gate of the secondary molding portion Q.

[0097] In the fourth example, the protrusion 220 is included in the secondary molded portion Q. The protrusion 220 includes the gate of the secondary molded portion Q.

[0098] Please refer to Figures 7 and 8. The configuration of the primary molding part P can be selected arbitrarily. The configuration of the primary molding part P is not limited to the configuration exemplified. In one example, the primary molding part P includes a primary body component PA and a protrusion 220. The protrusion 220 is connected to the primary body component PA. The protrusion 220 is configured to protrude from the primary body component PA.

[0099] The configuration of the primary body component PA can be selected arbitrarily. The configuration of the primary body component PA is not limited to the configuration exemplified. The primary body component PA forms the main body 100 of the molded article 20. In one example, the primary body component PA includes a primary handle component P10, a neck 120, and a head 130.

[0100] The configuration of the primary handle component P10 can be selected arbitrarily. The configuration of the primary handle component P10 is not limited to the configuration shown in the example. The primary handle component P10 constitutes the handle 110.

[0101] The primary handle component P10 includes a first end P10A and a second end P10B. The first end P10A is located in a first axial direction relative to the axial center of the primary handle component P10. The second end P10B is located in a second axial direction relative to the axial center of the primary handle component P10.

[0102] The first end P10A constitutes the first end 110A of the handle 110. The second end P10B constitutes the second end 110B of the handle 110. The first end P10A is connected to the second end 120B of the neck 120. The first end P10A is thinner than the second end 120B of the neck 120.

[0103] The primary handle component P10 includes a first side portion P10C and a second side portion P10D. The first side portion P10C is located in a first width direction relative to the center of the primary handle component P10 in the width direction. The second side portion P10D is located in a second width direction relative to the center of the primary handle component P10 in the width direction.

[0104] In one example, the primary body component PA includes a step P11. The step P11 is provided between the second end 120B of the neck 120 and the first end P10A of the primary handle component P10. The step P11 includes an end surface P12.

[0105] The end surface P12 is provided between the outer surface of the second end 120B of the neck 120 and the outer surface of the first end P10A of the primary handle component P10. The end surface P12 is, for example, a flat surface. The end surface P12 is, for example, parallel to the third reference plane.

[0106] In one example, the primary handle component P10 includes one or more protrusions P13. In the example shown, the primary handle component P10 includes multiple protrusions P13.

[0107] A plurality of protrusions P13 are provided on the first end P10A. The protrusions P13 protrude from the outer surface of the first end P10A in a direction perpendicular to the central axis of the main body 100. The protrusions P13 are arranged around the central axis of the handle 110 at intervals.

[0108] In one example, the primary handle component P10 includes a waisted portion P20. The waisted portion P20 includes a first end P20A, a second end P20B, and a middle portion P20C.

[0109] The first end P20A is located in a first axial direction relative to the intermediate portion P20C. The second end P20B is located in a second axial direction relative to the intermediate portion P20C. The intermediate portion P20C is located between the first end P20A and the second end P20B in the axial direction.

[0110] The first end P20A constitutes the thick portion of the constricted portion P20. The second end P20B constitutes the thick portion of the constricted portion P20. The middle portion P20C constitutes the thin portion of the constricted portion P20. The thickness of the constricted portion P20 tapers in the axial direction from the first end P20A and the second end P20B toward the middle portion P20C. The thinnest portion of the constricted portion P20 is included in the middle portion P20C.

[0111] In one example, the primary handle component P10 includes a tapered portion P30. The tapered portion P30 is located in the second axial direction relative to the constricted portion P20. The tapered portion P30 is connected to the constricted portion P20. The central axis of the tapered portion P30 is coaxial with the central axis of the constricted portion P20. The outer diameter of the tapered portion P30 decreases in the second axial direction.

[0112] The tapered portion P30 includes a first end P30A and a second end P30B. The first end P30A is located in a first axial direction relative to the center of the tapered portion P30 in the axial direction. The second end P30B is located in a second axial direction relative to the center of the tapered portion P30 in the axial direction. The first end P30A connects to the second end P20B of the constricted portion P20.

[0113] In one example, the primary handle component P10 includes a main body protrusion P40. The main body protrusion P40 is connected to the tapered portion P30. The main body protrusion P40 protrudes in a second axial direction relative to the tapered portion P30. The central axis of the main body protrusion P40 is coaxial with the central axis of the constricted portion P20. The main body protrusion P40 is thinner than the narrowest portion of the constricted portion P20.

[0114] The main body protrusion P40 includes a first end P40A and a second end P40B. The first end P40A is located in a first axial direction relative to the center of the main body protrusion P40 in the axial direction. The second end P40B is located in a second axial direction relative to the center of the main body protrusion P40 in the axial direction. The first end P40A connects to the second end P30B of the tapered portion P30.

[0115] In one example, the main body protrusion P40 has a tapered shape. The outer diameter of the main body protrusion P40 decreases in the second axial direction. The maximum outer diameter of the main body protrusion P40 is smaller than the thickness of the narrowest part of the constricted portion P20.

[0116] The second end P10B of the primary handle component P10 can be selected arbitrarily, and the configuration of the second end P10B is not limited to the illustrated configuration.

[0117] In an example in which the primary handle constituent portion P10 includes the tapered portion P30 and the main body protrusion portion P40, the second end portion P10B is formed by the tapered portion P30 and the main body protrusion portion P40.

[0118] In an example in which the primary handle constituent portion P10 includes the tapered portion P30 and does not include the main body protrusion portion P40, the second end portion P10B is formed by the tapered portion P30.

[0119] 3 and 4. The configuration of the secondary molded portion Q can be selected arbitrarily. The configuration of the secondary molded portion Q is not limited to the exemplified configuration. In one example, the secondary molded portion Q includes a secondary main body component QA.

[0120] The configuration of the secondary body component QA can be selected arbitrarily. The configuration of the secondary body component QA is not limited to the exemplified configuration. The secondary body component QA constitutes the main body 100 of the molded product 20. In one example, the secondary body component QA includes a secondary handle component Q10.

[0121] The configuration of the secondary handle component Q10 can be selected arbitrarily. The configuration of the secondary handle component Q10 is not limited to the exemplified configuration. The secondary handle component Q10 is provided on the outer surface of the primary handle component P10. The secondary handle component Q10 is configured to cover at least a portion of the outer surface of the primary handle component P10.

[0122] The secondary handle component Q10 constitutes the gripped portion of the handle 110. The material of the secondary handle component Q10 is different from the material of the primary handle component P10.

[0123] The secondary handle component Q10 includes a first end Q10A and a second end Q10B. The first end Q10A is located in a first axial direction relative to the axial center of the secondary handle component Q10. The second end Q10B is located in a second axial direction relative to the axial center of the secondary handle component Q10.

[0124] The first end Q10A of the secondary handle component Q10 includes an end surface Q10E. The end surface Q10E is, for example, a flat surface. The end surface Q10E is, for example, parallel to the third reference plane. The end surface Q10E faces the end surface P12 of the step portion P11 of the primary body component PA. The end surface Q10E contacts the end surface P12 of the step portion P11.

[0125] The secondary handle component Q10 includes a first side portion Q10C and a second side portion Q10D. The first side portion Q10C is located in a first width direction relative to the center of the secondary handle component Q10 in the width direction. The second side portion Q10D is located in a second width direction relative to the center of the secondary handle component Q10 in the width direction. The first side portion Q10C constitutes the first side portion 100C of the main body 100. The second side portion Q10D constitutes the second side portion 100D of the main body 100.

[0126] In one example, the secondary handle component Q10 includes a first arrangement portion Q11 and a second arrangement portion Q12. The second arrangement portion Q12 is located in a second axial direction relative to the first arrangement portion Q11.

[0127] The first arrangement portion Q11 includes the first end portion P10A, the constricted portion P20, and the tapered portion P30 of the primary handle component P10. The first arrangement portion Q11 covers the outer surface of the first end portion P10A, the outer surface of the constricted portion P20, and the outer surface of the tapered portion P30.

[0128] The main body protrusion P40 of the primary handle component P10 is disposed inside the second arrangement portion Q12. The second arrangement portion Q12 covers the side surface of the outer surface of the main body protrusion P40.

[0129] In one example, the secondary handle component Q10 includes a constricted portion Q20. The constricted portion Q20 includes a first end Q20A, a second end Q20B, and a middle portion Q20C.

[0130] The first end Q20A is located in the first axial direction relative to the middle portion Q20C. The second end Q20B is located in the second axial direction relative to the middle portion Q20C. The first end Q20A forms the thick part of the constricted portion Q20. The second end Q20B forms the thick part of the constricted portion Q20. The middle portion Q20C forms the thin part of the constricted portion Q20.

[0131] The thickness of the constricted portion Q20 tapers axially from the first end Q20A and second end Q20B toward the middle portion Q20C, and the narrowest part of the constricted portion Q20 is included in the middle portion Q20C.

[0132] The first end Q20A of the constricted portion Q20 is configured to correspond to the first end P20A of the constricted portion P20 of the primary handle component P10. The first end Q20A of the constricted portion Q20 covers the outer surface of the first end P20A of the constricted portion P20.

[0133] The second end Q20B of the constricted portion Q20 is configured to correspond to the second end P20B of the constricted portion P20 of the primary handle component P10. The second end Q20B of the constricted portion Q20 covers the outer surface of the second end P20B of the constricted portion P20.

[0134] The middle portion Q20C of the constricted portion Q20 is configured to correspond to the middle portion P20C of the constricted portion P20 of the primary handle component P10. The middle portion Q20C of the constricted portion Q20 covers the outer surface of the middle portion P20C of the constricted portion P20.

[0135] In one example, the secondary handle component Q10 includes a tapered portion Q30. The tapered portion Q30 includes a portion of the first arrangement portion Q11 and a second arrangement portion Q12. The outer diameter of the tapered portion Q30 decreases in the second axial direction. The tapered portion Q30 includes a first end Q30A and a second end Q30B.

[0136] The first end Q30A is located in the first axial direction relative to the center of the tapered portion Q30 in the axial direction. The second end Q30B is located in the second axial direction relative to the center of the tapered portion Q30 in the axial direction. The first end Q30A is connected to the second end Q20B of the constricted portion Q20.

[0137] The second end Q10B of the secondary handle component Q10 can be selected arbitrarily. The configuration of the second end Q10B is not limited to the configuration shown in the example. In an example where the secondary handle component Q10 includes a tapered portion Q30, the second end Q10B is formed by the tapered portion Q30.

[0138] The configuration of the second end 110B of the handle 110 can be selected arbitrarily. In one example, the second end 110B is formed by the second end P10B of the primary handle component P10 and the second end Q10B of the secondary handle component Q10.

[0139] 5 and 6, the protrusion 220 is connected to the second end 110B of the handle 110. The protrusion 220 protrudes in the second axial direction relative to the second end 110B of the handle 110. The central axis of the protrusion 220 is coaxial with the central axis of the handle 110.

[0140] In one example, the protrusion 220 is connected to the primary handle component P10. The protrusion 220 protrudes in the second axial direction from the second end P10B of the primary handle component P10.

[0141] The protrusion 220 includes a first end 220A and a second end 220B. The first end 220A is located in a first axial direction relative to the axial center of the protrusion 220. The second end 220B is located in a second axial direction relative to the axial center of the protrusion 220. The first end 220A connects to a second end P10B of the primary handle component P10. In one example, the first end 220A connects to a second end P40B of the body protrusion P40.

[0142] In one example, the protrusion 220 is a pillar. Examples of pillars include a circular cylinder, a rectangular prism, and an anti-rectangular prism. In the example shown, the protrusion 220 is a pillar.

[0143] The thickness of the protrusion 220 can be selected arbitrarily. The thickness of the protrusion 220 is not limited to the thickness exemplified. In one example, the protrusion 220 is thinner than the main body 100. The outer diameter of the protrusion 220 is smaller than the minimum thickness of the head 130. The outer diameter of the protrusion 220 is smaller than the outer diameter of the narrowest part of the constricted portion P20.

[0144] In the molded article 20 in a state where the protrusion 220 has been removed, the primary molded portion P includes a tip portion P50. The tip portion P50 is the portion of the protrusion 220 that remains in the molded article 20 without being removed.

[0145] The tip portion P50 is connected to the second end P40B of the main body protrusion P40. The tip portion P50 protrudes in the second axial direction relative to the main body protrusion P40. The tip portion P50 includes an end surface P51.

[0146] The tip portion P50 is not covered by the secondary handle component Q10. The tip portion P50 is located outside the secondary handle component Q10. The tip portion P50 protrudes in the second axial direction from the second end Q10B of the secondary handle component Q10.

[0147] In one example, the end surface P51 is a curved surface that bulges in the second axial direction. The end surface P51 forms the outer surface of the second end 110B of the handle 110.

[0148] See Figure 9. The molded article 20 includes, for example, a decorative portion 400. The decorative portion 400 is configured to decorate the molded article 20. The configuration of the decorative portion 400 can be selected arbitrarily. The configuration of the decorative portion 400 is not limited to the configuration shown in the example. In one example, the decorative portion 400 is provided in at least one of the primary molded portion P and the secondary molded portion Q.

[0149] Methods for forming the decorative portion 400 are classified into, for example, primary decoration and secondary decoration. Primary decoration is a method for forming the decorative portion 400 during molding of the molded article 20. Secondary decoration is a method for forming the decorative portion 400 after molding of the molded article 20.

[0150] Examples of primary decoration include transferring decorative films, laminating decorative films, laminating soft skin materials, laminating other skin materials, in-mold coating, in-mold reacting, molding colored layers, and transferring specific surfaces formed on molds for decoration.

[0151] Examples of secondary decoration include transferring decorative film, laminating decorative film, laminating soft skin materials, laminating other skin materials, painting, printing, plating, vacuum deposition, electrostatic flocking, laser marking, chemical coating, and dyeing.

[0152] The decorative portion 400 provided in the primary molded portion P includes at least one of a decorative portion 400 formed by primary decoration and a decorative portion 400 formed by secondary decoration.

[0153] In the molded article 20 in a state where the protrusions 220 have not been removed, the decorative portions 400 are provided in the following locations, for example.

[0154] In an example in which the decorative portion 400 is provided on the primary molded portion P, the decorative portion 400 is provided on at least one of the primary main body forming portion PA and the protruding portion 220.

[0155] In an example in which the decorative portion 400 is provided on the primary body component PA, the decorative portion 400 is provided on at least one of the primary handle component P10, the neck 120, and the head 130.

[0156] In an example where the decorative portion 400 is provided on the primary handle component P10, the decorative portion 400 is provided on at least one of the first end P10A, the second end P10B, the first side P10C, the second side P10D, the step portion P11, the protrusion P13, the constricted portion P20, the tapered portion P30, and the main body protrusion P40.

[0157] In the molded article 20 from which the protrusions 220 have been removed, the decorative portions 400 are provided in the following locations, for example.

[0158] In an example in which the decorative portion 400 is provided on the primary molded portion P, the decorative portion 400 is provided on the primary main body forming portion PA.

[0159] In an example in which the decorative portion 400 is provided on the primary body component PA, the decorative portion 400 is provided on at least one of the primary handle component P10, the neck 120, and the head 130.

[0160] In an example where the decorative portion 400 is provided on the primary handle component P10, the decorative portion 400 is provided on at least one of the first end P10A, the second end P10B, the first side portion P10C, the second side portion P10D, the step portion P11, the protrusion P13, the constricted portion P20, the tapered portion P30, and the tip portion P50.

[0161] The decorative portion 400 provided in the secondary molded portion Q includes at least one of a decorative portion 400 formed by primary decoration and a decorative portion 400 formed by secondary decoration.

[0162] In an example in which the decorative portion 400 is provided on the secondary molded portion Q, the decorative portion 400 is provided on the secondary main body forming portion QA.

[0163] In an example in which the decorative portion 400 is provided on the secondary main body component QA, the decorative portion 400 is provided on the secondary handle component Q10.

[0164] In an example where the decorative portion 400 is provided on the secondary handle component Q10, the decorative portion 400 is provided on at least one of the first end Q10A, the second end Q10B, the first side portion Q10C, the second side portion Q10D, the first arrangement portion Q11, the second arrangement portion Q12, the constricted portion Q20, and the tapered portion Q30.

[0165] In the illustrated example, the decorative portion 400 includes a surface relief structure 410. The configuration of the surface relief structure 410 can be selected arbitrarily and is not limited to the configuration illustrated.

[0166] The relief structure 410 is formed by primary decoration. In one example, the mold used to manufacture the molded article 20 includes a specific surface for decoration. The specific surface has a shape corresponding to the relief structure 410. The relief structure 410 is formed by transferring the specific surface of the mold.

[0167] In one example, the surface relief structure 410 is provided on the primary molding part P. The surface relief structure 410 is provided on the primary body component PA. The surface relief structure 410 is provided on the primary handle component P10.

[0168] The surface relief structure 410 is configured to provide unevenness to the outer surface of the primary handle component P10. The surface relief structure 410 restricts the movement of the secondary molded part Q relative to the primary molded part P by the unevenness of the outer surface of the primary molded part P.

[0169] The surface relief structure 410 is configured to regulate at least one of the relative movement of the secondary molded part Q with respect to the primary molded part P in the axial direction, the relative movement of the secondary molded part Q with respect to the primary molded part P in the circumferential direction, and the relative rotation of the secondary molded part Q with respect to the primary molded part P.

[0170] The relief structure 410 includes a plurality of geometric faces 411. Any one geometric face 411 is adjacent to another geometric face 411. In one example, two adjacent geometric faces 411 share one side or one vertex.

[0171] The geometric shape surface 411 is, for example, a polygonal surface. Examples of polygons include a regular polygon and a general polygon.

[0172] Examples of regular polygons include an equilateral triangle, a square, and a regular pentagon.

[0173] Examples of common polygons include triangles, quadrilaterals, pentagons, hexagons, heptagons, octagons, nonagons, and decagons.

[0174] Examples of triangles include an isosceles triangle, a right triangle, and a right-angled isosceles triangle.

[0175] Examples of quadrilaterals include rectangles, rhombus, parallelograms, trapezoids, isosceles trapezoids, and kites.

[0176] In the illustrated example, the geometric faces 411 included in the surface relief structure 410 are congruent. The geometric faces 411 have the shape of an isosceles triangle.

[0177] The relief structure 410 includes one or more ridges 412 and one or more valleys 413. In the illustrated example, the relief structure 410 includes a plurality of ridges 412 and a plurality of valleys 413.

[0178] One mountain-shaped portion 412 is formed by two adjacent geometrically shaped surfaces 411. One valley-shaped portion 413 is formed by two adjacent geometrically shaped surfaces 411.

[0179] In one example, the relief structure 410 is configured according to a reference line. The plurality of geometric faces 411 are arranged along the reference line of the relief structure 410. Examples of the reference line include a straight line, a wavy line, a spiral, and a curved line along a circumferential direction. In the example shown, the reference line of the relief structure 410 is a spiral.

[0180] The relief structure 410 includes a first end 410A and a second end 410B. The first end 410A is located in a first axial direction relative to the center of a reference line of the relief structure 410. The second end 410B is located in a second axial direction relative to the center of a reference line of the relief structure 410.

[0181] The first end 410A is provided at a first end P10A of the primary handle component P10, and the second end 410B is provided at a second end P10B of the primary handle component P10.

[0182] The outer surface of the primary handle component P10 includes a base surface and a geometrically shaped surface 411. The base surface is a surface surrounding the geometrically shaped surface 411. The base surface is a curved surface. The geometrically shaped surface 411 is a plane.

[0183] For example, the geometric shape surface 411 intersects at least one of the first reference surface, the second reference surface, and the third reference surface.

[0184] At least one geometrically shaped surface 411 included in the surface relief structure 410 faces the inside of the secondary molded portion Q in the first axial direction.

[0185] At least one geometrically shaped surface 411 included in the surface relief structure 410 faces the inside of the secondary molded portion Q in the second axial direction.

[0186] At least one geometrically shaped surface 411 included in the surface relief structure 410 faces the inside of the secondary molded portion Q in the first circumferential direction.

[0187] At least one geometrically shaped surface 411 included in the surface relief structure 410 faces the inside of the secondary molded portion Q in the second circumferential direction.

[0188] In one example, the relationship between two adjacent geometric shapes 411 is classified into a first relationship, a second relationship, and a third relationship.

[0189] In the first relationship, two adjacent geometric faces 411 share an equal side of an isosceles triangle. The two geometric faces 411 having the first relationship form a mountain-shaped portion 412. The equal side shared by the two geometric faces 411 forms the apex of the mountain-shaped portion 412.

[0190] In the second relationship, two adjacent geometric faces 411 share a vertex of an isosceles triangle. The two geometric faces 411 having the second relationship form a mountain-shaped portion 412. The vertex shared by the two geometric faces 411 forms the top of the mountain-shaped portion 412.

[0191] In the third relationship, two adjacent geometric surfaces 411 share a base of an isosceles triangle. The two geometric surfaces 411 having the third relationship form a valley-shaped portion 413. The base shared by the two geometric surfaces 411 forms the bottom of the valley-shaped portion 413.

[0192] See Figure 3. In a front view of the molded article 20, a line passing through the center of the handle 110 in the axial direction and parallel to the width direction is referred to as the "handle reference line." In a front view of the molded article 20, a line passing through the center of the neck 120 in the axial direction and parallel to the width direction is referred to as the "neck reference line." In a front view of the molded article 20, a line passing through the center of the head 130 in the axial direction and parallel to the width direction is referred to as the "head reference line." In a front view of the molded article 20, a line passing through the center of the protrusion 220 in the axial direction and parallel to the width direction is referred to as the "protrusion reference line."

[0193] The body 100 includes a first boundary portion ZA that corresponds to the boundary between the head 130 and the neck 120. The first boundary portion ZA forms a part of the head 130 and a part of the neck 120.

[0194] The second end 130B of the head 130 includes a first boundary portion ZA. The first boundary portion ZA, which is part of the head 130, is the portion of the second end 130B of the head 130 that is the longest distance from the head reference line in the axial direction.

[0195] Regarding the second end 130B of the head 130, the range from a predetermined portion of the second end 130B located in the first axial direction relative to the first boundary ZA to the first boundary ZA is referred to as the "predetermined range of the second end 130B."

[0196] The first end 120A of the neck 120 includes a first boundary portion ZA. The first boundary portion ZA, which is part of the neck 120, is the portion of the first end 120A of the neck 120 that is farthest from the neck reference line in the axial direction.

[0197] Regarding the first end 120A of the neck 120, the range from a predetermined portion of the first end 120A located in the second axial direction relative to the first boundary ZA to the first boundary ZA is referred to as the "predetermined range of the first end 120A."

[0198] The main body 100 includes a first connecting portion JA. The first connecting portion JA includes a predetermined range of the second end 130B of the head 130 and a predetermined range of the first end 120A of the neck 120. Examples of the form of the first connecting portion JA include first to seventh forms of the first connecting portion JA.

[0199] The first connecting portion JA of the first embodiment is configured, for example, as follows.

[0200] In a predetermined range of the second end 130B of the head 130, the width of the second end 130B increases in the second axial direction.

[0201] Within a predetermined range of the first end 120A of the neck 120, the width of the first end 120A is constant in the second axial direction.

[0202] The width of the first connecting portion JA in the first form varies in the axial direction: the width of the first connecting portion JA increases in a predetermined range of the second end 130B of the head 130 in the second axial direction, and is constant in a predetermined range of the first end 120A of the neck 120 in the second axial direction.

[0203] The first boundary portion ZA is located at the boundary between a portion where the width of the first connection portion JA increases in the second axial direction and a portion where the width of the first connection portion JA is constant in the second axial direction.

[0204] The first connecting portion JA of the second embodiment is configured, for example, as follows.

[0205] In a predetermined range of the second end 130B of the head 130, the width of the second end 130B is constant in the second axial direction.

[0206] Within a predetermined range of the first end 120A of the neck 120, the width of the first end 120A increases in the second axial direction.

[0207] The width of the first connecting portion JA in the second form varies in the axial direction: the width of the first connecting portion JA is constant in a predetermined range of the second end 130B of the head 130 in the second axial direction, and increases in a predetermined range of the first end 120A of the neck 120 in the second axial direction.

[0208] The first boundary portion ZA is located at the boundary between a portion where the width of the first connection portion JA is constant in the second axial direction and a portion where the width of the first connection portion JA increases in the second axial direction.

[0209] The first connecting portion JA of the third embodiment is configured, for example, as follows.

[0210] In a predetermined range of the second end 130B of the head 130, the width of the second end 130B decreases in the second axial direction.

[0211] Within a predetermined range of the first end 120A of the neck 120, the width of the first end 120A is constant in the second axial direction.

[0212] The width of the first connecting portion JA in the third embodiment varies in the axial direction: the width of the first connecting portion JA decreases in a predetermined range at the second end 130B of the head 130 in the second axial direction, and is constant in a predetermined range at the first end 120A of the neck 120 in the second axial direction.

[0213] The first boundary portion ZA is located at the boundary between a portion where the width of the first connection portion JA decreases in the second axial direction and a portion where the width of the first connection portion JA is constant in the second axial direction.

[0214] The first connecting portion JA of the fourth embodiment is configured, for example, as follows.

[0215] In a predetermined range of the second end 130B of the head 130, the width of the second end 130B is constant in the second axial direction.

[0216] In a predetermined range of the first end 120A of the neck 120, the width of the first end 120A decreases in the second axial direction.

[0217] The width of the first connecting portion JA in the fourth embodiment varies in the axial direction: the width of the first connecting portion JA is constant in a predetermined range of the second end 130B of the head 130 in the second axial direction, and decreases in a predetermined range of the first end 120A of the neck 120 in the second axial direction.

[0218] The first boundary portion ZA is located at the boundary between a portion where the width of the first connection portion JA is constant in the second axial direction and a portion where the width of the first connection portion JA decreases in the second axial direction.

[0219] The first connecting portion JA of the fifth embodiment is configured, for example, as follows.

[0220] In a predetermined range of the second end 130B of the head 130, the width of the second end 130B increases in the second axial direction.

[0221] In a predetermined range of the first end 120A of the neck 120, the width of the first end 120A decreases in the second axial direction.

[0222] The width of the first connecting portion JA in the fifth embodiment varies in the axial direction: the width of the first connecting portion JA increases in a predetermined range of the second end 130B of the head 130 in the second axial direction, and decreases in a predetermined range of the first end 120A of the neck 120 in the second axial direction.

[0223] The first boundary portion ZA is located at the boundary between a portion where the width of the first connection portion JA increases in the second axial direction and a portion where the width of the first connection portion JA decreases in the second axial direction.

[0224] The first connecting portion JA of the sixth embodiment is configured, for example, as follows.

[0225] In a predetermined range of the second end 130B of the head 130, the width of the second end 130B decreases in the second axial direction.

[0226] Within a predetermined range of the first end 120A of the neck 120, the width of the first end 120A increases in the second axial direction.

[0227] The width of the first connecting portion JA in the sixth embodiment varies in the axial direction: the width of the first connecting portion JA decreases in a predetermined range at the second end 130B of the head 130 in the second axial direction, and increases in a predetermined range at the first end 120A of the neck 120 in the second axial direction.

[0228] The first boundary portion ZA is located at the boundary between a portion where the width of the first connection portion JA decreases in the second axial direction and a portion where the width of the first connection portion JA increases in the second axial direction.

[0229] The first connecting portion JA of the seventh embodiment is configured, for example, as follows.

[0230] The first connecting portion JA of the seventh embodiment includes a characteristic structural change that indicates the boundary between the head 130 and the neck 120. The characteristic structural change indicates the boundary between the head 130 and the neck 120 from a perspective different from the width of the first connecting portion JA.

[0231] The following are examples of characteristic structural changes. In a first example, the characteristic structural change includes a difference between the material of the head 130 and the material of the neck 120. In a second example, the characteristic structural change includes a difference between the shape of the outer surface of the head 130 and the shape of the outer surface of the neck 120. In a third example, the characteristic structural change includes a step formed between the head 130 and the neck 120. In a fourth example, the characteristic structural change includes at least two of the first to third examples.

[0232] The configuration regarding the width of the first connecting portion JA of the seventh embodiment will be illustrated.

[0233] In the first example, the configuration regarding the width of the first connecting portion JA in the seventh embodiment is the same as the configuration regarding the width of the first connecting portion JA in any of the first to sixth embodiments.

[0234] In the second example, the configuration regarding the width of the first connecting portion JA in the seventh embodiment is different from the configuration regarding the width of the first connecting portion JA in the first to sixth embodiments.

[0235] In a predetermined range of the second end 130B of the head 130, the width of the second end 130B increases in the second axial direction. In a predetermined range of the first end 120A of the neck 120, the width of the first end 120A increases in the second axial direction.

[0236] In the third example, the configuration regarding the width of the first connecting portion JA in the seventh embodiment is different from the configuration regarding the width of the first connecting portion JA in the first to sixth embodiments.

[0237] In a predetermined range of the second end 130B of the head 130, the width of the second end 130B decreases in the second axial direction. In a predetermined range of the first end 120A of the neck 120, the width of the first end 120A decreases in the second axial direction.

[0238] In the fourth example, the configuration regarding the width of the first connecting portion JA in the seventh embodiment is different from the configuration regarding the width of the first connecting portion JA in the first to sixth embodiments.

[0239] In a predetermined range of the second end 130B of the head 130, the width of the second end 130B is constant in the second axial direction. In a predetermined range of the first end 120A of the neck 120, the width of the first end 120A is constant in the second axial direction.

[0240] The main body 100 includes a second boundary portion ZB that corresponds to the boundary between the neck 120 and the handle 110. The second boundary portion ZB forms a part of the neck 120 and a part of the handle 110.

[0241] The second end 120B of the neck 120 includes a second boundary ZB. The second boundary ZB, which is part of the neck 120, is the portion of the second end 120B of the neck 120 that is the longest distance from the neck reference line in the axial direction.

[0242] Regarding the second end 120B of the neck 120, the range from a predetermined portion of the second end 120B located in the first axial direction relative to the second boundary ZB to the second boundary ZB is referred to as the "predetermined range of the second end 120B."

[0243] The first end 110A of the handle 110 includes a second boundary ZB. The second boundary ZB, which is part of the handle 110, is the part of the first end 110A of the handle 110 that is the longest distance from the handle reference line in the axial direction.

[0244] Regarding the first end 110A of the handle 110, the range from a predetermined portion of the first end 110A located in the second axial direction relative to the second boundary ZB to the second boundary ZB is referred to as the "predetermined range of the first end 110A."

[0245] The main body 100 includes a second connecting portion JB. The second connecting portion JB includes a predetermined range of the second end portion 120B of the neck 120 and a predetermined range of the first end portion 110A of the handle 110. Examples of the configuration of the second connecting portion JB include first to seventh configurations of the first connecting portion JA.

[0246] The second connection portion JB of the first embodiment is configured, for example, as follows.

[0247] In a predetermined range of the second end 120B of the neck 120, the width of the second end 120B increases in the second axial direction.

[0248] Within a predetermined range of the first end 110A of the handle 110, the width of the first end 110A is constant in the second axial direction.

[0249] The width of the second connecting portion JB in the first form varies in the axial direction: the width of the second connecting portion JB increases in a predetermined range of the second end portion 120B of the neck 120 in the second axial direction, and is constant in a predetermined range of the first end portion 110A of the handle 110 in the second axial direction.

[0250] The second boundary portion ZB is located at the boundary between a portion where the width of the second connection portion JB increases in the second axial direction and a portion where the width of the second connection portion JB is constant in the second axial direction.

[0251] The second connection portion JB of the second embodiment is configured, for example, as follows.

[0252] Within a predetermined range of the second end 120B of the neck 120, the width of the second end 120B is constant in the second axial direction.

[0253] Within a predetermined range of the first end 110A of the handle 110, the width of the first end 110A increases in the second axial direction.

[0254] The width of the second connecting portion JB in the second configuration varies in the axial direction: the width of the second connecting portion JB is constant in a predetermined range of the second end portion 120B of the neck 120 in the second axial direction, and increases in a predetermined range of the first end portion 110A of the handle 110 in the second axial direction.

[0255] The second boundary portion ZB is located at the boundary between a portion where the width of the second connection portion JB is constant in the second axial direction and a portion where the width of the second connection portion JB increases in the second axial direction.

[0256] The second connection portion JB of the third embodiment is configured, for example, as follows.

[0257] In a predetermined range of the second end 120B of the neck 120, the width of the second end 120B decreases in the second axial direction.

[0258] Within a predetermined range of the first end 110A of the handle 110, the width of the first end 110A is constant in the second axial direction.

[0259] In the third embodiment, the width of the second connecting portion JB varies in the axial direction: the width of the second connecting portion JB decreases in a predetermined range at the second end 120B of the neck 120 in the second axial direction, and is constant in a predetermined range at the first end 110A of the handle 110 in the second axial direction.

[0260] The second boundary portion ZB is located at the boundary between a portion where the width of the second connection portion JB decreases in the second axial direction and a portion where the width of the second connection portion JB is constant in the second axial direction.

[0261] The second connection portion JB of the fourth embodiment is configured, for example, as follows.

[0262] Within a predetermined range of the second end 120B of the neck 120, the width of the second end 120B is constant in the second axial direction.

[0263] Within a predetermined range of the first end 110A of the handle 110, the width of the first end 110A decreases in the second axial direction.

[0264] In the fourth embodiment, the width of the second connecting portion JB varies in the axial direction: the width of the second connecting portion JB is constant in a predetermined range of the second end portion 120B of the neck 120 in the second axial direction, and decreases in a predetermined range of the first end portion 110A of the handle 110 in the second axial direction.

[0265] The second boundary portion ZB is located at the boundary between a portion where the width of the second connection portion JB is constant in the second axial direction and a portion where the width of the second connection portion JB decreases in the second axial direction.

[0266] The second connecting portion JB of the fifth embodiment is configured, for example, as follows.

[0267] In a predetermined range of the second end 120B of the neck 120, the width of the second end 120B increases in the second axial direction.

[0268] Within a predetermined range of the first end 110A of the handle 110, the width of the first end 110A decreases in the second axial direction.

[0269] The width of the second connecting portion JB in the fifth embodiment varies in the axial direction: the width of the second connecting portion JB increases in a predetermined range of the second end portion 120B of the neck 120 in the second axial direction, and decreases in a predetermined range of the first end portion 110A of the handle 110 in the second axial direction.

[0270] The second boundary portion ZB is located at the boundary between a portion where the width of the second connection portion JB increases in the second axial direction and a portion where the width of the second connection portion JB decreases in the second axial direction.

[0271] The second connecting portion JB of the sixth embodiment is configured, for example, as follows.

[0272] In a predetermined range of the second end 120B of the neck 120, the width of the second end 120B decreases in the second axial direction.

[0273] Within a predetermined range of the first end 110A of the handle 110, the width of the first end 110A increases in the second axial direction.

[0274] The width of the second connecting portion JB in the sixth embodiment varies in the axial direction: the width of the second connecting portion JB decreases in a predetermined range at the second end 120B of the neck 120 in the second axial direction, and increases in a predetermined range at the first end 110A of the handle 110 in the second axial direction.

[0275] The second boundary portion ZB is located at the boundary between a portion where the width of the second connection portion JB decreases in the second axial direction and a portion where the width of the second connection portion JB increases in the second axial direction.

[0276] The second connecting portion JB of the seventh embodiment is configured, for example, as follows.

[0277] The second connecting portion JB of the seventh embodiment includes a characteristic structural change that indicates the boundary between the neck 120 and the handle 110. The characteristic structural change indicates the boundary between the neck 120 and the handle 110 from a perspective different from the width of the second connecting portion JB.

[0278] Examples of characteristic structural changes are given below. In a first example, the characteristic structural change includes a difference between the material of the neck 120 and the material of the handle 110. In a second example, the characteristic structural change includes a difference between the shape of the outer surface of the neck 120 and the shape of the outer surface of the handle 110. In a third example, the characteristic structural change includes a step formed between the neck 120 and the handle 110. In a fourth example, the characteristic structural change includes at least two of the first to third examples.

[0279] The configuration regarding the width of the second connecting portion JB of the seventh embodiment will be illustrated.

[0280] In the first example, the configuration regarding the width of the second connecting portion JB in the seventh embodiment is the same as the configuration regarding the width of the second connecting portion JB in any of the first to sixth embodiments.

[0281] In the second example, the configuration regarding the width of the second connecting portion JB in the seventh embodiment is different from the configuration regarding the width of the second connecting portion JB in the first to sixth embodiments.

[0282] Within a predetermined range of the second end 120B of the neck 120, the width of the second end 120B increases in the second axial direction. Within a predetermined range of the first end 110A of the handle 110, the width of the first end 110A increases in the second axial direction.

[0283] In the third example, the configuration regarding the width of the second connecting portion JB in the seventh embodiment is different from the configuration regarding the width of the second connecting portion JB in the first to sixth embodiments.

[0284] In a predetermined range of the second end 120B of the neck 120, the width of the second end 120B decreases in the second axial direction. In a predetermined range of the first end 110A of the handle 110, the width of the first end 110A decreases in the second axial direction.

[0285] In the fourth example, the configuration regarding the width of the second connecting portion JB in the seventh embodiment is different from the configuration regarding the width of the second connecting portion JB in the first to sixth embodiments.

[0286] The width of second end 120B of neck 120 is constant in the second axial direction within a predetermined range of second end 120B. The width of first end 110A of handle 110 is constant in the second axial direction within a predetermined range of first end 110A.

[0287] The main body 100 includes a third boundary ZC that corresponds to the boundary between the handle 110 and the protrusion 220. The third boundary ZC forms a part of the handle 110 and a part of the protrusion 220.

[0288] The second end 110B of the handle 110 includes a third boundary ZC. The third boundary ZC, which is part of the handle 110, is the portion of the second end 110B of the handle 110 that is the longest distance from the handle reference line in the axial direction.

[0289] Regarding the second end 110B of the handle 110, the range from a predetermined portion of the second end 110B located in the first axial direction relative to the third boundary ZC to the third boundary ZC is referred to as the "predetermined range of the second end 110B."

[0290] The first end 220A of the protrusion 220 includes a third boundary ZC. The third boundary ZC, which is part of the protrusion 220, is the part of the first end 220A of the protrusion 220 that is farthest from the protrusion reference line in the axial direction.

[0291] Regarding the first end 220A of the protrusion 220, the range from a predetermined portion of the first end 220A located in the second axial direction relative to the third boundary ZC to the third boundary ZC is referred to as the "predetermined range of the first end 220A."

[0292] The main body 100 includes a third connection part JC. The third connection part JC includes a predetermined range of the second end 110B of the handle 110 and a predetermined range of the first end 220A of the protrusion 220. Examples of the form of the third connection part JC include first to seventh forms of the third connection part JC.

[0293] The third connection portion JC of the first embodiment is configured, for example, as follows.

[0294] Within a predetermined range of the second end 110B of the handle 110, the width of the second end 110B increases in the second axial direction.

[0295] In a predetermined range of the first end 220A of the protrusion 220, the width of the first end 220A is constant in the second axial direction.

[0296] The width of the third connecting portion JC in the first form varies in the axial direction: the width of the third connecting portion JC increases in a predetermined range of the second end 110B of the handle 110 in the second axial direction, and is constant in a predetermined range of the first end 220A of the protruding portion 220 in the second axial direction.

[0297] The third boundary portion ZC is located at the boundary between a portion where the width of the third connection portion JC increases in the second axial direction and a portion where the width of the third connection portion JC is constant in the second axial direction.

[0298] The third connection portion JC of the second embodiment is configured, for example, as follows.

[0299] Within a predetermined range of the second end 110B of the handle 110, the width of the second end 110B is constant in the second axial direction.

[0300] In a predetermined range of the first end 220A of the protrusion 220, the width of the first end 220A increases in the second axial direction.

[0301] The width of the third connecting portion JC in the second form varies in the axial direction: the width of the third connecting portion JC is constant in a predetermined range of the second end 110B of the handle 110 in the second axial direction, and increases in a predetermined range of the first end 220A of the protruding portion 220 in the second axial direction.

[0302] The third boundary portion ZC is located at the boundary between a portion where the width of the third connection portion JC is constant in the second axis direction and a portion where the width of the third connection portion JC increases in the second axis direction.

[0303] The third connection portion JC of the third embodiment is configured, for example, as follows.

[0304] In a predetermined range of the second end 110B of the handle 110, the width of the second end 110B decreases in the second axial direction.

[0305] In a predetermined range of the first end 220A of the protrusion 220, the width of the first end 220A is constant in the second axial direction.

[0306] The width of the third connecting portion JC in the third form varies in the axial direction: the width of the third connecting portion JC decreases in a predetermined range at the second end 110B of the handle 110 in the second axial direction, and is constant in a predetermined range at the first end 220A of the protruding portion 220 in the second axial direction.

[0307] The third boundary portion ZC is located at the boundary between a portion where the width of the third connection portion JC decreases in the second axial direction and a portion where the width of the third connection portion JC is constant in the second axial direction.

[0308] The third connection portion JC of the fourth embodiment is configured, for example, as follows.

[0309] Within a predetermined range of the second end 110B of the handle 110, the width of the second end 110B is constant in the second axial direction.

[0310] In a predetermined range of the first end 220A of the protrusion 220, the width of the first end 220A decreases in the second axial direction.

[0311] The width of the third connecting portion JC in the fourth embodiment varies in the axial direction: the width of the third connecting portion JC is constant in a predetermined range of the second end 110B of the handle 110 in the second axial direction, and becomes smaller in a predetermined range of the first end 220A of the protruding portion 220 in the second axial direction.

[0312] The third boundary portion ZC is located at the boundary between a portion where the width of the third connection portion JC is constant in the second axis direction and a portion where the width of the third connection portion JC decreases in the second axis direction.

[0313] The third connection portion JC of the fifth embodiment is configured, for example, as follows.

[0314] Within a predetermined range of the second end 110B of the handle 110, the width of the second end 110B increases in the second axial direction.

[0315] In a predetermined range of the first end 220A of the protrusion 220, the width of the first end 220A decreases in the second axial direction.

[0316] The width of the third connection part JC in the fifth embodiment varies in the axial direction: the width of the third connection part JC increases in a predetermined range at the second end 110B of the handle 110 in the second axial direction, and decreases in a predetermined range at the first end 220A of the protrusion 220 in the second axial direction.

[0317] The third boundary portion ZC is located at the boundary between a portion where the width of the third connection portion JC increases in the second axial direction and a portion where the width of the third connection portion JC decreases in the second axial direction.

[0318] The third connection portion JC of the sixth embodiment is configured, for example, as follows.

[0319] In a predetermined range of the second end 110B of the handle 110, the width of the second end 110B decreases in the second axial direction.

[0320] In a predetermined range of the first end 220A of the protrusion 220, the width of the first end 220A increases in the second axial direction.

[0321] The width of the third connection part JC in the sixth embodiment varies in the axial direction. The width of the third connection part JC decreases in a predetermined range of the second end part 110B of the handle 110 in the second axial direction, and increases in a predetermined range of the first end part 220A of the protrusion 220 in the second axial direction.

[0322] The third boundary portion ZC is located at the boundary between a portion where the width of the third connection portion JC decreases in the second axial direction and a portion where the width of the third connection portion JC increases in the second axial direction.

[0323] The third connection portion JC of the seventh embodiment is configured, for example, as follows.

[0324] The third connecting portion JC of the seventh embodiment includes a characteristic structural change that indicates the boundary between the handle 110 and the protruding portion 220. The characteristic structural change indicates the boundary between the handle 110 and the protruding portion 220 from a perspective different from that of the width of the third connecting portion JC.

[0325] Examples of characteristic structural changes are given below. In a first example, the characteristic structural change includes a difference between the material of the handle 110 and the material of the protrusion 220. In a second example, the characteristic structural change includes a difference between the shape of the outer surface of the handle 110 and the shape of the outer surface of the protrusion 220. In a third example, the characteristic structural change includes a step formed between the handle 110 and the protrusion 220. In a fourth example, the characteristic structural change includes at least two of the first to third examples.

[0326] The configuration regarding the width of the third connection portion JC of the seventh embodiment will be illustrated.

[0327] In the first example, the configuration regarding the width of the third connection portion JC in the seventh embodiment is the same as the configuration regarding the width of the third connection portion JC in any of the first to sixth embodiments.

[0328] In the second example, the configuration regarding the width of the third connection portion JC in the seventh embodiment is different from the configuration regarding the width of the third connection portion JC in the first to sixth embodiments.

[0329] In a predetermined range of the second end 110B of the handle 110, the width of the second end 110B increases in the second axial direction. In a predetermined range of the first end 220A of the protrusion 220, the width of the first end 220A increases in the second axial direction.

[0330] In the third example, the configuration regarding the width of the third connection portion JC in the seventh embodiment is different from the configuration regarding the width of the third connection portion JC in the first to sixth embodiments.

[0331] In a predetermined range of the second end 110B of the handle 110, the width of the second end 110B decreases in the second axial direction. In a predetermined range of the first end 220A of the protrusion 220, the width of the first end 220A decreases in the second axial direction.

[0332] In the fourth example, the configuration regarding the width of the third connection portion JC in the seventh embodiment is different from the configuration regarding the width of the third connection portion JC in the first to sixth embodiments.

[0333] The width of second end 110B of handle 110 is constant in the second axial direction within a predetermined range of second end 110B. The width of first end 220A of protrusion 220 is constant in the second axial direction within a predetermined range of first end 220A.

[0334] If the position of the first boundary portion ZA in the axial direction is not defined by the above example, the position of the first boundary portion ZA can be defined, for example, by the following method.

[0335] The distance between the tip 130P of the head 130 and the first boundary ZA in the axial direction is referred to as the "first reference length." The length of the molded product 20 in the axial direction is referred to as the "molded product length." The ratio of the first reference length to the molded product length is referred to as the "first reference length ratio."

[0336] In one example of the molded article 20 in a state where the protrusion 220 has not been removed, the position of the first boundary portion ZA in the axial direction is determined so that the first reference length ratio falls within the range of 14% to 54%.

[0337] In one example of the molded article 20 in a state where the protrusion 220 has been removed, the position of the first boundary portion ZA in the axial direction is determined so that the first reference length ratio falls within the range of 14% to 54%.

[0338] If the position of the second boundary portion ZB in the axial direction is not defined by the above example, the position of the second boundary portion ZB is defined, for example, by the following method.

[0339] The distance in the axial direction between the tip 130P of the head 130 and the second boundary ZB is referred to as the “second reference length.” The ratio of the second reference length to the length of the molded product is referred to as the “second reference length ratio.”

[0340] In one example of the molded article 20 in a state where the protrusion 220 has not been removed, the position of the second boundary ZB in the axial direction is determined so that the second reference length ratio falls within the range of 28% to 68%.

[0341] In one example of the molded article 20 in a state where the protrusion 220 has been removed, the position of the second boundary ZB in the axial direction is determined so that the second reference length ratio falls within the range of 29% to 69%.

[0342] If the position of the third boundary ZC in the axial direction is not defined by the above example, the position of the third boundary ZC is defined, for example, by the following method.

[0343] The axial distance between the tip 130P of the head 130 and the third boundary ZC is referred to as the “third reference length.” The ratio of the third reference length to the length of the molded product is referred to as the “third reference length ratio.”

[0344] In one example of the molded article 20 in a state where the protrusion 220 has not been removed, the position of the third boundary ZC in the axial direction is determined so that the third reference length ratio falls within the range of 56% to 96%.

[0345] The first end 130A of the head 130 includes a tip portion 130P. The tip portion 130P is the part of the first end 130A of the head 130 that is the longest distance from the head reference line in the axial direction.

[0346] The length of the head 130 in the axial direction is defined, for example, as follows: The length of the head 130 in the axial direction is the distance between the tip 130P of the head 130 and the first boundary ZA in the axial direction.

[0347] The length of the neck 120 in the axial direction is defined, for example, as follows: The length of the neck 120 in the axial direction is the distance between the second boundary ZB and the first boundary ZA in the axial direction.

[0348] The length of the handle 110 in the axial direction is defined, for example, as follows: The length of the handle 110 in the axial direction is the distance between the second boundary ZB and the third boundary ZC in the axial direction.

[0349] The second end 220B of the protrusion 220 includes a tip 220P. The tip 220P is the part of the second end 220B of the protrusion 220 that is the longest distance from the protrusion reference line in the axial direction.

[0350] The length of the protrusion 220 in the axial direction is defined, for example, as follows: The length of the protrusion 220 in the axial direction is the distance between the third boundary ZC and the tip 220P in the axial direction.

[0351] In the examples shown in Figures 3 and 4, each of the connection parts JA to JC is configured as follows: The configuration of the first connection part JA is the third configuration of the first connection part JA described above. The configuration of the second connection part JB is the seventh configuration of the second connection part JB described above. Characteristic structural changes include differences in the materials of the neck 120 and the handle 110. The configuration of the third connection part JC is the third configuration of the third connection part JC described above.

[0352] The length of each portion of the molded article 20 in the axial direction can be selected arbitrarily, and is not limited to the exemplified lengths.

[0353] In one example, the axial length of the handle 110 is greater than the axial length of the neck 120. The axial length of the neck 120 is greater than the axial length of the head .

[0354] In one example, the axial length of the protrusion 220 is shorter than the axial length of the body 100. The axial length of the protrusion 220 is shorter than the axial length of the handle 110. The axial length of the protrusion 220 is shorter than the axial length of the neck 120. The axial length of the protrusion 220 is shorter than the axial length of the head 130. The axial length of the protrusion 220 is shorter than the axial length of the body protrusion P40.

[0355] Please refer to Figures 1 to 8. The molded product 20 is formed by injection molding. The manufacturing method of the molded product 20 includes, for example, a primary molding step, a secondary molding step, and a removal step. The secondary molding step is performed after the primary molding step. The removal step is performed after the secondary molding step.

[0356] In the primary molding process, a primary mold is used. The primary mold molds the primary molded part P. The primary mold includes, for example, a fixed mold, a movable mold, and one or more ejector pins. The primary mold includes the same number of ejector pins as the number of pressed parts included in the pressed structure 200.

[0357] In the secondary molding process, a secondary mold is used. The secondary mold molds the secondary molded portion Q. The secondary mold includes, for example, a fixed mold, a movable mold, and one or more ejector pins. The secondary mold includes the same number of ejector pins as the number of pressed portions included in the pressed structure 200.

[0358] The movable mold can move in a first predetermined direction relative to the fixed mold. The first predetermined direction includes a closing direction and an opening direction. The closing direction is the direction in which the movable mold approaches the fixed mold. The opening direction is the direction opposite to the closing direction.

[0359] The plurality of ejector pins may include, for example, a first ejector pin and a second ejector pin. The first ejector pin corresponds to the specific portion 210 of the pressed structure 200. The tip surface of the first ejector pin may be, for example, a flat surface. The second ejector pin corresponds to the protrusion 220 of the pressed structure 200. The tip surface of the second ejector pin may be, for example, a flat surface.

[0360] The ejector pins are movable relative to the movable mold in a second predetermined direction. The second predetermined direction includes a push-out direction and a retraction direction. The push-out direction is a direction in which the ejector pins protrude from the movable mold. The retraction direction is a direction opposite to the push-out direction.

[0361] The primary molding process includes, for example, steps A1 to A5. Step A2 is performed after step A1 is performed. Step A3 is performed after step A2 is performed. Step A4 is performed after step A3 is performed. Step A5 is performed after step A4 is performed. Steps A1 to A4 correspond to the molding process and the primary molding process. Step A5 corresponds to the extrusion process and the primary extrusion process.

[0362] In step A1, the primary mold is clamped. During clamping, the movable mold moves in the closing direction relative to the fixed mold. A primary cavity is formed between the movable mold and the fixed mold. The shape of the primary cavity corresponds to the shape of the primary molded part P.

[0363] In step A2, a molten material corresponding to the primary molded portion P is filled into the primary cavity.

[0364] In step A3, the filled molten material is cooled and solidified. In the primary cavity, a primary molded part P shown in FIG. 7 is molded.

[0365] In step A4, the primary mold is opened. In the mold opening, the movable mold moves in the opening direction relative to the fixed mold. The movable mold moves away from the fixed mold.

[0366] In step A5, the first ejector pin and the second ejector pin move in the extrusion direction relative to the movable mold. The first ejector pin pushes the specific portion 210 of the primary molded part P in the extrusion direction. The second ejector pin pushes the protruding portion 220 of the primary molded part P in the extrusion direction. The primary molded part P separates from the movable mold and is removed from the primary mold. The primary molded part P is set in the movable mold of the secondary mold.

[0367] When the protrusion 220 is configured as a part separate from the gate of the primary molding part P, in one example, the gate of the primary molding part P is connected to the back surface of the first end P10A of the primary handle constituent part P10. The gate of the primary molding part P is removed before the primary molding part P is set in the movable die of the secondary mold. When the protrusion 220 includes the gate of the primary molding part P, the primary molding part P is set in the movable die of the secondary mold without removing the gate.

[0368] The secondary molding process includes, for example, steps B1 to B5. Step B2 is performed after step B1. Step B3 is performed after step B2. Step B4 is performed after step B3. Step B5 is performed after step B4. Steps B1 to B4 correspond to the molding process and the secondary molding process. Step B5 corresponds to the extrusion process and the secondary extrusion process.

[0369] In step B1, the secondary mold is clamped. During clamping, the movable mold moves in the closing direction relative to the fixed mold. A secondary cavity is formed between the movable mold and the fixed mold. The secondary cavity is formed around the primary handle component P10 of the primary molded part P. The shape of the secondary cavity corresponds to the shape of the secondary molded part Q.

[0370] The primary molded part P is fixed to the secondary mold. The state in which the primary molded part P is fixed to the secondary mold is called the "fixed state." In the fixed state, the part of the primary molded part P located in the first axial direction relative to the secondary cavity and the part of the primary molded part P located in the second axial direction relative to the secondary cavity are fixed to the secondary mold.

[0371] The neck 120 and the head 130 are positioned in a first axial direction relative to the secondary cavity. The neck 120 and the head 130 are fixed to the secondary mold. The protrusion 220 is positioned in a second axial direction relative to the secondary cavity. The protrusion 220 is fixed to the secondary mold.

[0372] In step B2, the molten material corresponding to the secondary molded portion Q is filled into the secondary cavity.

[0373] In step B3, the filled molten material is cooled and solidified. In the secondary cavity, a secondary molded portion Q is molded on the outer surface of the primary molded portion P. By molding the secondary molded portion Q, a molded product 20 shown in FIG. 3 is formed.

[0374] In step B4, the secondary mold is opened. In the mold opening, the movable mold moves in the opening direction relative to the fixed mold. The movable mold moves away from the fixed mold.

[0375] In step B5, the first ejector pin and the second ejector pin move in the extrusion direction relative to the movable mold. The first ejector pin pushes the specific portion 210 of the pressed structure 200 in the extrusion direction. The second ejector pin pushes the protruding portion 220 of the pressed structure 200 in the extrusion direction. The molded product 20 separates from the movable mold and is removed from the secondary mold. The molded product 20 is set in a cutting device.

[0376] In the removing step, a cutting device is used to remove the protruding portion 220 from the molded article 20. By carrying out the removing step, the molded article 20 shown in Fig. 1 is manufactured.

[0377] The manufacturing method of toothbrush 10A includes, for example, a fixing step. The fixing step is performed after the manufacturing method of molded article 20 is performed. In the fixing step, multiple tufts are fixed to head 130 of molded article 20. By performing the fixing step, toothbrush 10A shown in FIG. 1 is manufactured.

[0378] (Effect 1) According to the molded product 20 and the manufacturing method thereof, the following effects can be obtained, for example.

[0379] In one example of the molded article 20, the molded article 20 includes the following configuration: The molded article 20 includes a main body 100 and a pressable structure 200 configured to be pressable by an ejector pin. The pressable structure 200 includes a protrusion 220 that protrudes relative to the main body 100.

[0380] According to the molded article 20, the protruding portion 220 can be pressed by the ejector pin during the extrusion process. This reduces the number of pressed portions in the molded article 20. When the number of pressed portions in the molded article 20 is reduced, the following effects can be obtained, for example: The design of the molded article 20 can be expected to be improved. Foreign matter is less likely to accumulate on the surface of the main body 100.

[0381] Examples of a state in which the pressed portion is reduced in the molded product 20 include a state in which there is no pressed portion in the molded product 20, and a state in which the area of ​​the pressed portion in the main body 100 of the molded product 20 is smaller than that of a molded product 20 that does not have a protrusion 220.

[0382] In one example of the molded product 20, the protrusion 220 is configured as a portion 300 intended to be removed.

[0383] According to the above-described molded product 20, it is possible to manufacture a molded product 20 that does not include the pressed portion of the protrusion 220.

[0384] In one example of the molded article 20 , the protrusion 220 connects to the end of the body 100 .

[0385] According to the molded product 20, the influence of the protrusion 220 on the design of the shape of the main body 100 is reduced.

[0386] In one example of molded article 20 , protrusion 220 is thinner than body 100 .

[0387] According to the molded product 20, the amount of material used to mold the protrusion 220 can be reduced.

[0388] In one example of molded article 20 , protrusion 220 is shorter than body 100 .

[0389] According to the molded product 20, the amount of material used to mold the protrusion 220 can be reduced.

[0390] In one example of the molded article 20, the molded article 20 includes the following configuration: The molded article 20 includes a primary molded portion P and a secondary molded portion Q provided on the outer surface of the primary molded portion P. The primary molded portion P includes a primary main body constituent portion PA that constitutes the main body 100, and a protrusion 220. The secondary molded portion Q includes a secondary main body constituent portion QA that constitutes the main body 100.

[0391] According to the molded product 20, the number of pressed portions can be reduced with respect to the secondary main body constituent portion QA.

[0392] In one example of toothbrush 10A, toothbrush 10A includes molded article 20.

[0393] According to toothbrush 10A, it is expected that the design of toothbrush 10A will be improved.

[0394] In one example of toothbrush 10A, toothbrush 10A includes the following configuration: Toothbrush 10A includes molded article 20 in which protruding portion 220 is configured as portion to be removed 300. Toothbrush 10A is in a state in which protruding portion 220 has been removed.

[0395] According to toothbrush 10A, it is expected that the design of toothbrush 10A will be improved.

[0396] In one example of a method for manufacturing the molded product 20, the manufacturing method includes the following steps: a molding step of molding the molded product 20 in a mold, and an extrusion step of pushing the molded product 20 with an ejector pin after the molding step is performed. In the extrusion step, the ejector pin pushes the protrusion 220.

[0397] According to the above manufacturing method, the number of pressed portions of the main body 100 can be reduced.

[0398] In one example of a method for manufacturing the molded product 20, the manufacturing method includes the following steps: The molding step includes a primary molding step for molding a primary molded portion P, and a secondary molding step for molding a secondary molded portion Q. The extrusion step includes a primary extrusion step for pushing the protruding portion 220 of the primary molded portion P after the primary molding step is performed, and a secondary extrusion step for pushing the protruding portion 220 of the secondary molded portion Q after the secondary molding step is performed.

[0399] According to the above manufacturing method, the number of pressed portions in the secondary molded portion Q can be reduced.

[0400] In one example of a method for manufacturing the molded article 20, the manufacturing method further includes a removal step of removing the protrusions 220 after the extrusion step is performed.

[0401] According to the above manufacturing method, the number of pressed portions of the molded product 20 can be reduced.

[0402] (Effect 2) According to the molded product 20 and the manufacturing method thereof, the following effects can be obtained, for example.

[0403] An example of the molded product 20 includes the following configuration: A secondary molded portion Q is provided on the outer surface of a primary molded portion P. The secondary molded portion Q is made of a transparent or semi-transparent resin.

[0404] According to the molded article 20, it is expected that the design of the molded article 20 will be improved.

[0405] In one example of the molded article 20, the molded article 20 includes the following configuration: The secondary molded portion Q includes a secondary handle component Q10. The secondary handle component Q10 covers the outer surface of the primary handle component P10. A transparent or translucent resin is used as the material for the secondary molded portion Q.

[0406] According to the molded article 20, the primary handle constituent part P10 can be seen from the outside of the molded article 20. It is expected that the design of the molded article 20 will be improved.

[0407] In one example of molded article 20, the primary handle forming portion P10 of the primary molded part P includes one or more protrusions P13.

[0408] According to the molded product 20, the protrusion P13 restricts the movement of the secondary molded portion Q relative to the primary molded portion P in the axial direction. The position of the secondary molded portion Q relative to the primary molded portion P is stabilized.

[0409] In one example of the molded product 20, the primary handle-forming portion P10 of the primary molded portion P includes a constricted portion P20.

[0410] The molded article 20 described above has the following advantages, for example: The design of the molded article 20 can be expected to be improved. The movement of the secondary molded portion Q relative to the primary molded portion P in the axial direction is restricted by the constricted portion P20. The position of the secondary molded portion Q relative to the primary molded portion P is stabilized.

[0411] In one example of the molded product 20, the secondary handle forming portion Q10 of the secondary molded portion Q includes a constricted portion Q20.

[0412] The molded article 20 has the following advantages, for example: It is expected that the design of the molded article 20 will be improved. The handle 110 will be easier to grip.

[0413] In one example of molded article 20, molded article 20 has the following configuration: A first end Q20A of constricted portion Q20 corresponds to the first end P20A of constricted portion P20. A second end Q20B of constricted portion Q20 corresponds to the second end P20B of constricted portion P20. A middle portion Q20C of constricted portion Q20 corresponds to the middle portion P20C of constricted portion P20.

[0414] According to the molded article 20, it is expected that the design of the molded article 20 will be improved.

[0415] In one example of the molded article 20 , the molded article 20 includes a decorative portion 400 .

[0416] According to the molded article 20, it is expected that the design of the molded article 20 will be improved.

[0417] In one example of a method for manufacturing the molded product 20, the secondary cavity is filled with molten material while the primary molding part P is in a fixed state.

[0418] As the molten material is filled into the secondary cavity, the pressure of the molten material is applied to the primary handle constituent part P10 of the primary molded part P. Because the primary molded part P is in a fixed state, the primary handle constituent part P10 is prevented from being deflected by the pressure of the molten material.

[0419] (Second embodiment) Toothbrush 10A of the second embodiment is configured based on the first embodiment. In toothbrush 10A of the second embodiment, an example of dimensions related to protrusion 220 is presented.

[0420] The maximum outer diameter of the protrusion 220 is referred to as the "outer diameter RP." The size of the outer diameter RP can be selected arbitrarily. The size of the outer diameter RP is not limited to the size shown in the example. In one example, the outer diameter RP is equal to the maximum width of the protrusion 220.

[0421] In one example, the outer diameter RP is within a predetermined range. Examples of the predetermined range are as follows: In a first example, the predetermined range is equal to or greater than the lower limit outer diameter; in a second example, the predetermined range is equal to or less than the upper limit outer diameter; and in a third example, the predetermined range is equal to or greater than the lower limit outer diameter and equal to or less than the upper limit outer diameter.

[0422] The lower limit of the outer diameter is selected from, for example, 0.5 mm or 1 mm, and the upper limit of the outer diameter is selected from, for example, 3.0 mm or 7.0 mm.

[0423] Examples of the predetermined range in the third example include the following examples 31 to 34. In example 31, the predetermined range is 0.5 mm to 7.0 mm. In example 32, the predetermined range is 1.0 mm to 3.0 mm. In example 33, the predetermined range is 0.5 mm to 3.0 mm. In example 34, the predetermined range is 1.0 mm to 7.0 mm.

[0424] When the outer diameter RP is equal to or greater than the lower limit outer diameter, the protrusion 220 is less likely to be damaged. When the outer diameter RP is equal to or less than the upper limit outer diameter, the protrusion 220 is easier to remove.

[0425] (Third embodiment) Toothbrush 10A of the third embodiment is configured based on the first or second embodiment. In toothbrush 10A of the third embodiment, an example of dimensions related to protrusion 220 is presented.

[0426] The length of the protrusion 220 in the axial direction is referred to as "length LP."

[0427] In one example, the length LP is within a predetermined range. Examples of the predetermined range are as follows: In a first example, the predetermined range is equal to or greater than a lower limit length; in a second example, the predetermined range is equal to or less than an upper limit length; and in a third example, the predetermined range is equal to or greater than a lower limit length and equal to or less than an upper limit length.

[0428] The lower limit length is selected from, for example, 0.5 mm or 5.0 mm, and the upper limit length is selected from, for example, 25 mm or 30 mm.

[0429] Examples of the predetermined range in the third example include the following examples 31 to 34. In example 31, the predetermined range is 0.5 mm to 30 mm. In example 32, the predetermined range is 5.0 mm to 25 mm. In example 33, the predetermined range is 0.5 mm to 25 mm. In example 34, the predetermined range is 5.0 mm to 30 mm.

[0430] When the length LP is equal to or greater than the lower limit length, the degree of freedom in selecting the configuration of the ejector pin is increased.When the length LP is equal to or less than the upper limit length, the protrusion 220 is easy to remove.

[0431] (Fourth embodiment) Toothbrush 10A of the fourth embodiment is configured based on at least one of embodiments 1 to 3. Toothbrush 10A of the fourth embodiment presents an example of the relationship between the outer diameter of main body 100 and the outer diameter of protrusion 220.

[0432] The maximum outer diameter of the handle 110 is referred to as the "outer diameter RA." The value obtained by dividing the outer diameter RP by the outer diameter RA is referred to as the "first outer diameter ratio." The size of the outer diameter RA can be selected arbitrarily. The size of the outer diameter RA is not limited to the size shown in the example. In one example, the outer diameter RA is equal to the maximum width of the handle 110.

[0433] The maximum outer diameter of the neck 120 is referred to as the "outer diameter RB." The value obtained by dividing the outer diameter RP by the outer diameter RB is referred to as the "second outer diameter ratio." The size of the outer diameter RB can be selected arbitrarily. The size of the outer diameter RB is not limited to the size illustrated. In one example, the outer diameter RB is equal to the maximum width of the neck 120.

[0434] The maximum outer diameter of the head 130 is referred to as the "outer diameter RC." The value obtained by dividing the outer diameter RP by the outer diameter RC is referred to as the "third outer diameter ratio." The size of the outer diameter RC can be selected arbitrarily. The size of the outer diameter RC is not limited to the size illustrated. In one example, the outer diameter RC is equal to the maximum width of the head 130.

[0435] In one example, the first outer diameter ratio is included in a first range. The first range will be illustrated. In a first example, the first range is a range equal to or greater than a lower limit ratio X11. In a second example, the first range is a range equal to or less than an upper limit ratio X12. In a third example, the first range is a range equal to or greater than a lower limit ratio X11 and equal to or less than an upper limit ratio X12.

[0436] The lower limit ratio X11 is selected from, for example, 0.02 or 0.06, and the upper limit ratio X12 is selected from, for example, 0.3 or 1.4.

[0437] Examples of the first range in the third example include the following Examples 31 to 34. In Example 31, the first range is a range of 0.02 to 1.4. In Example 32, the first range is a range of 0.06 to 0.3. In Example 33, the first range is a range of 0.02 to 0.3. In Example 34, the first range is a range of 0.06 to 1.4.

[0438] When the first outer diameter ratio is equal to or greater than the lower limit ratio X11, the protrusion 220 is less likely to be damaged. When the first outer diameter ratio is equal to or less than the upper limit ratio X12, the protrusion 220 is easier to remove.

[0439] In one example, the second outer diameter ratio is included in the second range. The second range will be illustrated. In a first example, the second range is equal to or greater than the lower limit ratio X21. In a second example, the second range is equal to or less than the upper limit ratio X22. In a third example, the second range is equal to or greater than the lower limit ratio X21 and equal to or less than the upper limit ratio X22.

[0440] The lower limit ratio X21 is selected from, for example, 0.04 or 0.2, and the upper limit ratio X22 is selected from, for example, 0.8 or 7.0.

[0441] Examples of the second range in Example 3 include the following Examples 31 to 34. In Example 31, the second range is 0.04 to 7.0. In Example 32, the second range is 0.2 to 0.8. In Example 33, the second range is 0.04 to 0.8. In Example 34, the second range is 0.2 to 7.0.

[0442] When the second outer diameter ratio is equal to or greater than the lower limit ratio X21, the protrusion 220 is less likely to be damaged. When the second outer diameter ratio is equal to or less than the upper limit ratio X22, the protrusion 220 is easier to remove.

[0443] In one example, the third outer diameter ratio is included in the third range. The third range will be illustrated. In a first example, the third range is equal to or greater than the lower limit ratio X31. In a second example, the second range is equal to or less than the upper limit ratio X32. In a third example, the third range is equal to or greater than the lower limit ratio X31 and equal to or less than the upper limit ratio X32.

[0444] The lower limit ratio X31 is selected from, for example, 0.02 or 0.06, and the upper limit ratio X32 is selected from, for example, 0.3 or 2.3.

[0445] Examples of the third range in the third example include the following Examples 31 to 34. In Example 31, the third range is a range of 0.02 to 2.3. In Example 32, the third range is a range of 0.06 to 0.3. In Example 33, the third range is a range of 0.02 to 0.3. In Example 34, the third range is a range of 0.06 to 2.3.

[0446] When the third outer diameter ratio is equal to or greater than the lower limit ratio X31, the protrusion 220 is less likely to be damaged. When the third outer diameter ratio is equal to or less than the upper limit ratio X32, the protrusion 220 is easier to remove.

[0447] (Fifth embodiment) Toothbrush 10A of the fifth embodiment is configured based on at least one of Embodiments 1 to 4. Toothbrush 10A of the fifth embodiment presents an example of the relationship between the length of main body 100 and the length of protrusion 220.

[0448] The length of the handle 110 in the axial direction is referred to as "length LA." The length of the neck 120 in the axial direction is referred to as "length LB." The length of the head 130 in the axial direction is referred to as "length LC." The value obtained by dividing the length LP by the length LA is referred to as "first length ratio." The value obtained by dividing the length LP by the length LB is referred to as "second length ratio." The value obtained by dividing the length LP by the length LC is referred to as "third length ratio."

[0449] In one example, the first length ratio is included in the first range. The first range will be exemplified. In the first example, the first range is equal to or greater than the lower limit ratio Y11. In the second example, the first range is equal to or less than the upper limit ratio Y12. In the third example, the first range is equal to or greater than the lower limit ratio Y11 and equal to or less than the upper limit ratio Y12.

[0450] The lower limit ratio Y11 is selected from, for example, 0.003 or 0.05, and the upper limit ratio Y12 is selected from, for example, 0.8 or 1.5.

[0451] Examples of the first range in the third example include the following Examples 31 to 34. In Example 31, the first range is a range of 0.003 to 1.5. In Example 32, the first range is a range of 0.05 to 0.8. In Example 33, the first range is a range of 0.003 to 0.8. In Example 34, the first range is a range of 0.05 to 1.5.

[0452] When the first length ratio is equal to or greater than the lower limit ratio Y11, the degree of freedom in selecting the configuration of the ejector pin is increased.When the first length ratio is equal to or less than the upper limit ratio Y12, the protrusion 220 is easier to remove.

[0453] In one example, the second length ratio is included in the second range. The second range is exemplified below. In a first example, the second range is equal to or greater than the lower limit ratio Y21. In a second example, the second range is equal to or less than the upper limit ratio Y22. In a third example, the second range is equal to or greater than the lower limit ratio Y21 and equal to or less than the upper limit ratio Y22.

[0454] The lower limit ratio Y21 is selected from, for example, 0.003 or 0.04, and the upper limit ratio Y22 is selected from, for example, 0.9 or 3.0.

[0455] Examples of the second range in Example 3 include the following Examples 31 to 34. In Example 31, the second range is 0.003 to 3.0. In Example 32, the second range is 0.04 to 0.9. In Example 33, the second range is 0.003 to 0.9. In Example 34, the second range is 0.04 to 3.0.

[0456] When the second length ratio is equal to or greater than the lower limit ratio Y21, the degree of freedom in selecting the configuration of the ejector pin is increased.When the second length ratio is equal to or less than the upper limit ratio Y22, the protrusion 220 is easy to remove.

[0457] In one example, the third length ratio is included in the third range. The third range will be illustrated. In a first example, the third range is equal to or greater than the lower limit ratio Y31. In a second example, the third range is equal to or less than the upper limit ratio Y32. In a third example, the third range is equal to or greater than the lower limit ratio Y31 and equal to or less than the upper limit ratio Y32.

[0458] The lower limit ratio Y31 is selected from, for example, 0.01 or 0.09, and the upper limit ratio Y32 is selected from, for example, 1.2 or 8.6.

[0459] Examples of the third range in the third example include the following Examples 31 to 34. In Example 31, the third range is 0.01 to 8.6. In Example 32, the third range is 0.09 to 1.2. In Example 33, the third range is 0.01 to 1.2. In Example 34, the third range is 0.09 to 8.6.

[0460] When the third length ratio is equal to or greater than the lower limit ratio Y31, the degree of freedom in selecting the configuration of the ejector pin is increased.When the third length ratio is equal to or less than the upper limit ratio Y32, the protrusion 220 is easy to remove.

[0461] (Sixth embodiment) Toothbrush 10A of the sixth embodiment is configured based on at least one of embodiments 1 to 5. In toothbrush 10A of the sixth embodiment, the position of protrusion 220 in molded product 20 differs from the underlying embodiments.

[0462] Examples of the position of the protrusion 220 include the following.

[0463] In Example 11, the protrusion 220 is connected to the first side portion P10C of the primary handle forming portion P10 of the primary molded portion P. The protrusion 220 protrudes in the first width direction relative to the primary handle forming portion P10.

[0464] In Example 12, the protrusion 220 is connected to the second side portion P10D of the primary handle forming portion P10 of the primary molded portion P. The protrusion 220 protrudes in the second width direction relative to the primary handle forming portion P10.

[0465] In Example 13, the protrusion 220 is connected to the front surface of the primary handle forming portion P10 of the primary molding portion P. The protrusion 220 protrudes in the first thickness direction relative to the primary handle forming portion P10.

[0466] In Example 21, the protrusion 220 is connected to the first side 120C of the neck 120. The protrusion 220 protrudes from the neck 120 in the first width direction.

[0467] In Example 22, the protrusion 220 is connected to the second side 120D of the neck 120. The protrusion 220 protrudes from the neck 120 in the second width direction.

[0468] In Example 23, the protrusion 220 is connected to the front surface of the neck 120. The protrusion 220 protrudes from the neck 120 in the first thickness direction.

[0469] In Example 31, the protrusion 220 is connected to the first side portion 130C of the head 130. The protrusion 220 protrudes from the head 130 in the first width direction.

[0470] In Example 32, the protrusion 220 is connected to the second side portion 130D of the head 130. The protrusion 220 protrudes from the head 130 in the second width direction.

[0471] In Example 33, the protrusion 220 is connected to the front surface of the head 130. The protrusion 220 protrudes from the head 130 in the first thickness direction.

[0472] In Example 34, the protrusion 220 is connected to the first end 130A of the head 130. The protrusion 220 protrudes from the head 130 in the first axial direction.

[0473] The molded article 20 provides the following effects, for example.

[0474] In one example of the molded product 20, the protrusion 220 is provided on the front surface of the primary handle forming portion P10 of the primary molded part P.

[0475] According to the molded product 20, an ejector pin can be disposed at a position corresponding to the front of the primary handle constituent part P10 of the primary molded part P. In the primary extrusion process or the secondary extrusion process, the ejector pin can push the protrusion 220.

[0476] The primary molded part P can be removed from the primary mold without using an ejector pin to press the front of the outer surface of the primary handle constituent part P10. The molded product 20 can be removed from the secondary mold without using an ejector pin to press the front of the outer surface of the secondary handle constituent part Q10. This is expected to improve the design of the molded product 20. Foreign matter is less likely to accumulate on the surface of the main body 100.

[0477] (Seventh embodiment) Toothbrush 10A of the seventh embodiment is configured based on the sixth embodiment. In toothbrush 10A of the seventh embodiment, the number of protrusions 220 in molded product 20 differs from that of the sixth embodiment.

[0478] The pressed structure 200 includes a plurality of protrusions 220. Examples of the configuration of the plurality of protrusions 220 include the following.

[0479] In Example S, the pressed structure 200 includes the protrusion 220 of the first embodiment and at least one of the protrusions 220 of Examples 11 to 34 of the sixth embodiment.

[0480] In Example T, the pressed structure 200 includes at least two of the protrusions 220 of Examples 11 to 34 of the sixth embodiment. The pressed structure 200 does not include the protrusion 220 of the first embodiment.

[0481] Examples included in Example S include the following:

[0482] In example S11, the pressed structure 200 includes at least one of the protrusion 220 of the first embodiment, the protrusion 220 of example 11 of the sixth embodiment, and the protrusion 220 of example 12.

[0483] In Example S12, the pressed structure 200 is configured based on Example S11. The pressed structure 200 does not include the specific portion 210.

[0484] In example S13, the pressed structure 200 includes the protrusion 220 of the first embodiment and the protrusion 220 of example 13 of the sixth embodiment.

[0485] In Example S14, the pressed structure 200 is configured based on Example S13. The pressed structure 200 does not include the specific portion 210.

[0486] In example S21, the pressed structure 200 includes at least one of the protrusion 220 of the first embodiment, the protrusion 220 of example 21 of the sixth embodiment, and the protrusion 220 of example 22.

[0487] In example S22, the pressed structure 200 is configured based on example S21. The pressed structure 200 does not include the specific portion 210.

[0488] In example S23, the pressed structure 200 includes the protrusion 220 of the first embodiment and the protrusion 220 of example S23 of the sixth embodiment.

[0489] In example S24, the pressed structure 200 is configured based on example S23. The pressed structure 200 does not include the specific portion 210.

[0490] In example S31, the pressed structure 200 includes at least one of the protrusion 220 of the first embodiment, the protrusion 220 of example 31 of the sixth embodiment, and the protrusion 220 of example 32.

[0491] In example S32, the pressed structure 200 is configured based on example S31. The pressed structure 200 does not include the specific portion 210.

[0492] In example S33, the pressed structure 200 includes the protrusion 220 of the first embodiment and the protrusion 220 of example S33 of the sixth embodiment.

[0493] In example S34, the pressed structure 200 is configured based on example S33. The pressed structure 200 does not include the specific portion 210.

[0494] In example S35, the pressed structure 200 includes the protrusion 220 of the first embodiment and the protrusion 220 of example S34 of the sixth embodiment.

[0495] In example S36, the pressed structure 200 is configured based on example S35. The pressed structure 200 does not include the specific portion 210.

[0496] Examples included in Example T include the following:

[0497] In Example T11, the pressed structure 200 includes the protrusion 220 of Example 11 and the protrusion 220 of Example 12 of the sixth embodiment.

[0498] In Example T12, the pressed structure 200 is configured based on Example T11. The pressed structure 200 does not include the specific portion 210.

[0499] In Example T13, the pressed structure 200 includes the protrusion 220 of Example 11, the protrusion 220 of Example 12, the protrusion 220 of Example 21, and the protrusion 220 of Example 22 of the sixth embodiment.

[0500] In Example T14, the pressed structure 200 is configured based on Example T13. The pressed structure 200 does not include the specific portion 210.

[0501] In Example T15, the pressed structure 200 includes the protrusion 220 of Example 11, the protrusion 220 of Example 12, the protrusion 220 of Example 31, and the protrusion 220 of Example 32 of the sixth embodiment.

[0502] In Example T16, the pressed structure 200 is configured based on Example T15. The pressed structure 200 does not include the specific portion 210.

[0503] In Example T17, the pressed structure 200 includes the protrusion 220 of Example 21, the protrusion 220 of Example 22, the protrusion 220 of Example 31, and the protrusion 220 of Example 32 of the sixth embodiment.

[0504] In Example T18, the pressed structure 200 is configured based on Example T17. The pressed structure 200 does not include the specific portion 210.

[0505] In example T19, the pressure-receiving structure 200 includes the protrusion 220 of example 11 of the sixth embodiment, the protrusion 220 of example 12, the protrusion 220 of example 21, the protrusion 220 of example 22, the protrusion 220 of example 31, and the protrusion 220 of example 32.

[0506] In Example T20, the pressed structure 200 is configured based on Example T19. The pressed structure 200 does not include the specific portion 210.

[0507] In Example T21, the pressed structure 200 is configured based on any one of Examples T11 to T20. The pressed structure 200 further includes at least one of the protrusion 220 of Example 13, the protrusion 220 of Example 23, and the protrusion 220 of Example 33 of the sixth embodiment.

[0508] In Example T22, the pressed structure 200 includes at least two of the protrusion 220 of Example 13, the protrusion 220 of Example 23, and the protrusion 220 of Example 33 of the sixth embodiment.

[0509] In Example T23, the pressed structure 200 is configured based on Example T22. The pressed structure 200 does not include the specific portion 210.

[0510] In Example T24, the pressed structure 200 is configured based on any one of Examples T11 to T23. The pressed structure 200 further includes the protrusion 220 of Example 34 of the sixth embodiment.

[0511] The shapes of the protrusions 220 in the pressed structure 200 including the protrusions 220 are illustrated below. In a first example, the shapes of the protrusions 220 are the same. In a second example, the shapes of the protrusions 220 are different. In a third example, the shapes of at least two of the protrusions 220 are the same. In a fourth example, the shapes of at least two of the protrusions 220 are different.

[0512] (Eighth embodiment) Toothbrush 10A of the eighth embodiment is configured based on at least one of embodiments 1 to 7. Toothbrush 10A of the eighth embodiment differs from the underlying embodiments in the positions of specific portion 210 and protrusion 220 in molded product 20.

[0513] The specific portion 210 is provided on the back surface of the primary molded portion P. In a first example, the specific portion 210 is provided on the back surface of the head 130. In a second example, the specific portion 210 is provided on the back surface of the neck 120. In a third example, the specific portion 210 is provided on the back surface of the handle 110.

[0514] As for examples relating to the position of the protrusion 220, examples 11, 12, 21, 22, 31, 32, and 34 of the sixth embodiment are also common to the eighth embodiment.

[0515] Other examples of the position of the protrusion 220 include the following.

[0516] In Example 14, the protrusion 220 is connected to the rear surface of the primary handle forming portion P10 of the primary molding portion P. The protrusion 220 protrudes in the second thickness direction relative to the primary handle forming portion P10.

[0517] In Example 24, the protrusion 220 is connected to the rear surface of the neck 120. The protrusion 220 protrudes from the neck 120 in the second thickness direction.

[0518] In Example 35, the protrusion 220 is connected to the rear surface of the head 130. The protrusion 220 protrudes from the head 130 in the second thickness direction.

[0519] The molded article 20 provides the following effects, for example.

[0520] In one example of the molded product 20, the protrusion 220 is provided on the back surface of the primary handle forming portion P10 of the primary molded part P.

[0521] According to the molded product 20, an ejector pin can be disposed at a position corresponding to the back surface of the primary handle constituent part P10 of the primary molded part P. In the primary extrusion process or the secondary extrusion process, the ejector pin can push the protrusion 220.

[0522] The primary molded part P can be removed from the primary mold without using an ejector pin to press the back surface of the outer surface of the primary handle constituent part P10. The molded product 20 can be removed from the secondary mold without using an ejector pin to press the back surface of the outer surface of the secondary handle constituent part Q10. This is expected to improve the design of the molded product 20. Foreign matter is less likely to accumulate on the surface of the main body 100.

[0523] (Ninth embodiment) The toothbrush 10A of the ninth embodiment is configured based on at least one of the first to eighth embodiments. The ninth embodiment differs from the underlying embodiments in the method for manufacturing the molded product 20 and the form of the toothbrush 10A provided to the user.

[0524] The method for manufacturing the molded product 20 as a pre-process for manufacturing the toothbrush 10A does not include a removing step, and the molded product 20 from which the protruding portion 220 has not been removed is provided to the user.

[0525] The protrusion 220 may be configured as a portion to be removed 300 or as a portion not to be removed that is not to be removed from the molded article 20 .

[0526] When the protrusion 220 is configured as the portion to be removed 300, the user can select whether or not the protrusion 220 is to be removed from the molded product 20.

[0527] The following are examples of how a user uses toothbrush 10A. In a first example, toothbrush 10A including protrusion 220 is used to clean teeth. In a second example, protrusion 220 is removed by the user. Toothbrush 10A without protrusion 220 is used to clean teeth.

[0528] (Tenth embodiment) Toothbrush 10A of the tenth embodiment is constructed based on the ninth embodiment. In toothbrush 10A of the tenth embodiment, the structure of protrusion 220 differs from that of the ninth embodiment.

[0529] The protrusion 220 includes a functional portion. Examples of the configuration of the functional portion include the following.

[0530] In a first example, the functional part includes a first attachment part. The first attachment part is configured to be able to fit with a first type of object. Examples of the first type of object include a stand and a holder.

[0531] In a second example, the functional part includes a second attachment part. The second attachment part is configured, for example, to be able to attach a second type of object. An example of the second type of object is an oral care aid. An example of the aid is a brush or a mirror.

[0532] In a third example, the functional portion includes an opening. The opening has a hole. The opening is configured to allow a third type of object to be inserted. Examples of the third type of object include a hook and a strap.

[0533] In a fourth example, the functional portion includes a hook configured to be hooked onto the holder.

[0534] (Eleventh embodiment) Toothbrush 10A of the eleventh embodiment is configured based on at least one of embodiments 1 to 10. In toothbrush 10A of the eleventh embodiment, the configuration of molded product 20 differs from the embodiments of the assumptions.

[0535] The molded article 20 is a single-color molded article. In one example, the mold used to mold the single-color molded article includes a cavity corresponding to the shape of the molded article 20 in the embodiment.

[0536] (Twelfth embodiment) Toothbrush 10A of the twelfth embodiment is configured based on at least one of embodiments 1 to 10. In toothbrush 10A of the twelfth embodiment, the configuration of molded product 20 differs from the embodiments of the prerequisites.

[0537] The secondary molded part Q includes a secondary main body component QA and one or more protrusions. The protrusions of the secondary molded part Q are configured in accordance with the protrusions 220 of the primary molded part P in the previous embodiment.

[0538] The protrusions of the secondary molded portion Q are classified into, for example, a secondary handle protrusion provided on the handle 110, a secondary neck protrusion provided on the neck 120, and a secondary head protrusion provided on the head .

[0539] In the example where the secondary molded portion Q includes a secondary handle protrusion, the secondary body component QA includes a secondary handle component Q10 and one or more secondary handle protrusions.

[0540] The secondary handle protrusion is provided on the secondary handle component Q10. The configuration of the secondary handle protrusion is similar to the configuration of the protrusion 220 provided on the primary handle component P10 in the previous embodiment.

[0541] The relationship between the secondary handle protrusion and the protrusion 220 of the primary molded part P will be illustrated.

[0542] In a first example, the secondary handle protrusions are configured to cover the protrusions 220 of the corresponding primary molded part P.

[0543] In a second example, the secondary handle protrusion is configured to replace the protrusion 220 of the corresponding primary molded part P. The protrusion 220 of the corresponding primary molded part P is omitted.

[0544] In the third example, the secondary handle protrusion is provided at a location separate from the protrusion 220 of the primary molded part P.

[0545] In an example where the secondary molding portion Q includes a secondary neck protrusion, the secondary body component QA includes a secondary handle component Q10, a secondary neck component, and one or more secondary neck protrusions. The secondary neck component is provided on the outer surface of the neck 120 of the primary body component PA.

[0546] The secondary neck protrusion is provided on the secondary neck component, and the configuration of the secondary neck protrusion conforms to the configuration of the protrusion 220 provided on the neck 120 in the underlying embodiment.

[0547] The relationship between the secondary neck protrusion and the protrusion 220 of the primary molded part P will be illustrated.

[0548] In a first example, the secondary neck protrusion is configured to cover the corresponding protrusion 220 of the primary moulding part P.

[0549] In the second example, the secondary neck protrusion is configured to replace the protrusion 220 of the corresponding primary molded part P. The protrusion 220 of the corresponding primary molded part P is omitted.

[0550] In the third example, the secondary neck protrusion is provided at a location separate from the protrusion 220 of the primary molding part P.

[0551] In an example where the secondary molding part Q includes a secondary head protrusion, the secondary body part QA includes a secondary handle part Q10, a secondary head part, and one or more secondary head protrusions. The secondary head part is provided on the outer surface of the head 130 of the primary body part PA.

[0552] The secondary head protrusion is provided on the secondary head component, and the configuration of the secondary head protrusion is similar to the configuration of the protrusion 220 provided on the head 130 in the underlying embodiment.

[0553] The relationship between the secondary head protrusion and the protrusion 220 of the primary molding part P will be illustrated.

[0554] In a first example, the secondary head protrusions are configured to cover the protrusions 220 of the corresponding primary molding part P.

[0555] In the second example, the secondary head protrusion is configured to replace the protrusion 220 of the corresponding primary molding part P. The protrusion 220 of the corresponding primary molding part P is omitted.

[0556] In the third example, the secondary head protrusion is provided at a location separate from the protrusion 220 of the primary molding part P.

[0557] (Thirteenth embodiment) In the thirteenth embodiment, the oral care product 10 is an interdental brush. The interdental brush includes a molded product and a functional component. The molded product includes a configuration similar to that of the molded product 20 of the toothbrush 10A exemplified in the first to twelfth embodiments. The manufacturing method of the molded product includes steps similar to the manufacturing method of the molded product 20.

[0558] (Fourteenth embodiment) In the fourteenth embodiment, the oral care product 10 is a mucous membrane care brush. The mucous membrane care brush includes a molded product and a functional component. The molded product includes a configuration similar to that of the molded product 20 of the toothbrush 10A exemplified in the first to twelfth embodiments. The manufacturing method of the molded product includes steps similar to the manufacturing method of the molded product 20.

[0559] (Fifteenth embodiment) In the fifteenth embodiment, the oral care product 10 is a floss with a holder. The floss with a holder includes a molded product and a functional component. The molded product includes a configuration similar to that of the molded product 20 of the toothbrush 10A exemplified in the first to twelfth embodiments. The manufacturing method of the molded product includes steps similar to the manufacturing method of the molded product 20.

[0560] (16th embodiment) In the sixteenth embodiment, the oral care product 10 is a check mirror. The check mirror includes a molded product and a functional component. The molded product includes a configuration similar to that of the molded product 20 of the toothbrush 10A exemplified in the first to twelfth embodiments. The manufacturing method of the molded product includes steps similar to the manufacturing method of the molded product 20.

[0561] The possible forms of the molded oral care product, oral care product, and method for manufacturing a molded oral care product according to the present invention are not limited to those described in the above embodiments. The molded oral care product, oral care product, and method for manufacturing a molded oral care product according to the present invention may take forms different from those exemplified in the embodiments. Examples of such forms include forms in which part of the configuration of each embodiment is replaced, modified, or omitted, or forms in which new configurations are added to each embodiment. [Explanation of symbols]

[0562] 10: Oral care products 10A: Toothbrush 20: Molded product 100:Main body 200: Pressurized structure 220:Protrusion 300: Section to be removed P: Primary molding part PA: Primary body component Q: Secondary molding part QA: Secondary body components

Claims

1. A molded oral care product, The main body and a pressed structure configured to be pressed by an ejector pin; A primary molding unit; a secondary molded portion provided on an outer surface of the primary molded portion, the pressure-receiving structure includes a protrusion that protrudes from the main body in the axial direction of the main body, the primary molding portion includes a primary body forming portion that forms the body, and the protrusion, The secondary molded portion includes a secondary body component that configures the body. Molded oral care products.

2. The protruding portion is configured as a portion to be removed. A molded oral care product according to claim 1.

3. The protrusion is connected to an end of the body. A molded oral care product according to claim 1 or 2.

4. The protrusion is thinner than the body. A molded oral care product according to any one of claims 1 to 3.

5. The protrusion is shorter than the body. A molded oral care product according to any one of claims 1 to 4.

6. The oral care product is a toothbrush. A molded oral care product according to any one of claims 1 to 5.

7. The oral care product according to any one of claims 1 to 6 is included. Oral care products.

8. The oral care product according to claim 2, The protrusion is removed. Oral care products.

9. A method for manufacturing a molded oral care product, comprising: a main body; a pressable structure configured to be pressable by an ejector pin; a primary molded part; and a secondary molded part provided on the outer surface of the primary molded part, wherein the pressable structure comprises a protruding part that protrudes from the main body in the axial direction of the main body; the primary molded part comprises a primary main body constituent part that constitutes the main body, and the protruding part; and the secondary molded part comprises a secondary main body constituent part that constitutes the main body, a molding step of forming a molded product in a mold; an extrusion step of pushing the molded product by an ejector pin after the molding step is performed, In the extrusion step, the ejector pin pushes the protruding portion. A manufacturing method for molded oral care products.

10. the molding process includes a primary molding process for molding the primary molded portion and a secondary molding process for molding the secondary molded portion, The extrusion process includes a primary extrusion process of pushing the protruding portion of the primary molded portion after the primary molding process is performed, and a secondary extrusion process of pushing the protruding portion of the primary molded portion after the secondary molding process is performed. A method for producing the molded oral care product according to claim 9.

11. The extrusion step may further include a removal step of removing the protrusion after the extrusion step. A method for producing a molded oral care product according to claim 9 or 10.

Images