Oral care products and molded oral care products

Abstract

To provide a molding of an oral care article, making a position of a second molding part stable relative to a first molding part.SOLUTION: A molding 20 of an oral care article 10 includes: a first molding part P including a coat object part PC; a second molding part Q including a coating part Q40 for coating the coat object part PC; and an exposure configuration 500 including one or more penetration portions P100 penetrating into the coating part Q40. The penetration portion P100 includes an exposed surface disposed in the first molding part P and exposed toward the coating part Q40.SELECTED DRAWING: Figure 1

Description

[Technical Field]

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

[0002] Multicolor molded articles are known as an example of molded oral care products. Multicolor molded articles include, for example, a primary molded part and a secondary molded part. Patent Document 1 shows a toothbrush, which is 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] In a molded article including a primary molded portion and a secondary molded portion, it is preferable that the position of the secondary molded portion relative to the primary molded portion is stable. [Means for solving the problem]

[0005] The molded oral care product of the present invention includes a primary molded part including a part to be coated, a secondary molded part including a coating part that coats the part to be coated, and an exposure structure including one or more through-holes that penetrate the coating part, wherein the through-holes are provided in the primary molded part and include an exposed surface that is exposed to the coating part.

[0006] This molded product provides the following advantages, for example: The area to be coated of the primary molded part is covered by the covering part of the secondary molded part, so the area where the primary molded part and the secondary molded part join is increased; The position of the secondary molded part relative to the primary molded part is stabilized; In the secondary molding process in which the secondary molded part is formed, the exposed surface of the penetration part comes into contact with the mold; The force that the primary molded part receives from the resin material corresponding to the secondary molded part is transmitted to the mold, so deformation of the primary molded part in the secondary molding process is suppressed.

[0007] In one example of the molded oral care product, the through-hole is configured to protrude from the outer surface of the part to be covered.

[0008] The present molded article provides the following advantages, for example: The exposed surface of the through-hole is more likely to come into proper contact with the mold.

[0009] In one example of the molded oral care product, the portion to be covered includes a first end in the axial direction, and the exposure structure includes a plurality of the through-holes provided in the first end.

[0010] The present molded product provides the following advantages, for example: It is more effective in suppressing deformation of the primary molded portion in the secondary molding process.

[0011] In one example of the molded oral care product, the plurality of through-holes provided at the first end are arranged at intervals in the axial direction.

[0012] The present molded product provides the following advantages, for example: It is more effective in suppressing deformation of the primary molded portion in the secondary molding process.

[0013] In one example of the molded oral care product, the portion to be covered includes a second end in the axial direction, and the exposure structure includes a plurality of the through-holes provided in the second end.

[0014] The present molded product provides the following advantages, for example: It is more effective in suppressing deformation of the primary molded portion in the secondary molding process.

[0015] In one example of the molded oral care product, the plurality of through-holes provided at the second end are arranged at intervals in the axial direction.

[0016] The present molded product provides the following advantages, for example: It is more effective in suppressing deformation of the primary molded portion in the secondary molding process.

[0017] In one example of the molded oral care product, the secondary molded portion includes a gate-corresponding surface corresponding to the gate-related portion of the secondary molded portion, and an opposite surface located opposite the gate-corresponding surface, and the exposed surface includes at least a portion corresponding to the opposite surface.

[0018] The present molded product provides the following advantages, for example: It is more effective in suppressing deformation of the primary molded portion in the secondary molding process.

[0019] In one example of the molded oral care product, the exposed surface is provided so as not to overlap a parting line of the molded product.

[0020] The present molded article can provide the following effects, for example: It is expected that the design of the molded article will be improved.

[0021] In one example of the molded oral care product, the portion to be covered includes a constricted portion.

[0022] According to this molded product, for example, the following effects can be obtained: The position of the secondary molded part relative to the primary molded part is more stable.

[0023] In one example of the molded oral care product, the exposed surface of at least one of the penetrations comprises a curved surface.

[0024] This molded product can provide the following advantages: The force applied to the primary molded part during the secondary molding process is more easily distributed over a wide area, which contributes to, for example, improving the effect of suppressing deformation of the primary molded part.

[0025] In one example of the molded oral care product, the exposed surface of at least one of the through-holes is located radially inward relative to the outer surface of the secondary molded portion.

[0026] The present molded article has the following advantages, for example: The exposed surface is less noticeable, which contributes to improving the design of the molded article.

[0027] In one example of the molded oral care product, the material of the secondary molded portion includes a transparent resin or a translucent resin.

[0028] The present molded article can provide the following effects, for example: It is expected that the design of the molded article will be improved.

[0029] In one example of the molded oral care product, the material of the primary molded portion includes polyacetal, polypropylene, or saturated polyester resin.

[0030] The present molded product provides the following advantages, for example: The wear resistance of the primary molded portion is improved.

[0031] In one example of the molded oral care product, the molded product is a toothbrush.

[0032] According to this molded article, for example, the following effects can be obtained: The above-mentioned various effects can be obtained in a toothbrush.

[0033] The oral care product according to the present invention includes a molded article of the oral care product.

[0034] The oral care product of the present invention can provide the following effects, for example: Effects similar to those obtained by a molded oral care product can be obtained. [Effects of the Invention]

[0035] According to the molded oral care product and oral care product of the present invention, the position of the secondary molded part relative to the primary molded part is stable. [Brief explanation of the drawings]

[0036] [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. 2 is a second side view of the primary molding section. [Figure 10] Front view of the primary molding section. [Figure 11] FIG. [Figure 12] Rear view of the primary molding section. [Figure 13] An enlarged view of the ZA portion of Figure 9. [Figure 14] Enlarged view of part ZB in Figure 10. [Figure 15] Enlarged view of ZC area in Figure 11. [Figure 16] An enlarged view of the ZD portion of Figure 12. [Figure 17] Enlarged view of the ZE area in Figure 9. [Figure 18] An enlarged view of the ZF portion of Figure 10. [Figure 19] An enlarged view of the ZG portion of Figure 11. [Figure 20] Cross-section of the molded part parallel to the third reference plane (1). [Figure 21] Sectional view of the molded part parallel to the third reference plane (2). [Figure 22] Sectional view of the molded part parallel to the third reference plane (3). [Figure 23] Cross-sectional view of the molded product parallel to the second reference plane (1). [Figure 24] Cross-sectional view of the molded part parallel to the second reference plane (2). [Figure 25] Front view of the first group of penetrations. [Figure 26] Side view of the first group of penetrations. [Figure 27] FIG. 1 is a front view of a first group of penetrations and corresponding coverings. [Figure 28] FIG. 2 is a side view of a first group of feedthroughs and corresponding coverings. [Figure 29] Front view of the second group of penetrations. [Figure 30] Side view of the second group of penetrations. [Figure 31] FIG. 10 is a front view of a second group of penetrations and corresponding coverings. [Figure 32] FIG. 10 is a side view of a second group of feedthroughs and corresponding coverings. [Figure 33] Front view of the third group of penetrations. [Figure 34] Side view of the third group of penetrations. [Figure 35] FIG. 10 is a front view of a third group of penetrations and corresponding coverings. [Figure 36] FIG. 10 is a side view of a third group of penetrations and corresponding coverings. [Figure 37] FIG. 6 is a cross-sectional view of a molded product according to a second embodiment. [Figure 38] FIG. 10 is a cross-sectional view of a molded product according to a third embodiment. [Figure 39] FIG. 10 is a cross-sectional view of a molded product according to a fourth embodiment. [Figure 40] FIG. 10 is a cross-sectional view of a molded product according to a fifth embodiment. [Figure 41] FIG. 13 is a cross-sectional view of a molded product according to a sixth embodiment. [Figure 42] FIG. 13 is a cross-sectional view of a molded product according to a seventh embodiment. [Figure 43] FIG. 13 is a plan view of a molded product according to an eighth embodiment. [Figure 44] FIG. 13 is a plan view of a molded product according to a ninth embodiment. [Figure 45] FIG. 23 is a cross-sectional view of a molded product according to a tenth embodiment. [Figure 46] FIG. 16 is a cross-sectional view (1) of a molded product according to an eleventh embodiment. [Figure 47] FIG. 22 is a cross-sectional view of a molded product according to the eleventh embodiment. [Figure 48] FIG. 3 is a cross-sectional view of a molded product according to an eleventh embodiment. [Figure 49] FIG. 23 is a cross-sectional view of a molded product according to a twelfth embodiment. [Figure 50] FIG. 23 is a cross-sectional view of a molded product according to a thirteenth embodiment. [Figure 51] FIG. DETAILED DESCRIPTION OF THE INVENTION

[0037] (Oral care product description) Examples of oral care products include toothbrushes, interdental brushes, mucosal care brushes, floss with holders, and check mirrors.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] Examples of olefin-based resins include propylene-based polymers and ethylene-based polymers.

[0054] Examples of the propylene-based polymer include homopolymers, random copolymers, and block copolymers.

[0055] Examples of ethylene-based polymers include homopolymers, random copolymers, and block copolymers.

[0056] Examples of saturated polyester resins include polyethylene terephthalate, polybutylene terephthalate, polytrimethylene terephthalate, and polycyclohexylene dimethylene terephthalate.

[0057] Examples of thermoplastic resins classified based on their properties regarding the transmittance of visible light include opaque resins, semi-transparent resins, and transparent resins.

[0058] Examples of transparent resins include saturated polyester resins, acrylic resins, polycarbonates, polystyrene resins, AS (Acrylonitrile Styrene) resins, and silicone resins.

[0059] An example of a soft thermoplastic resin is a thermoplastic elastomer.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] For example, a molded oral care product may have a radially inner direction and a radially outer direction. The radially inner direction and the radially outer direction are parallel to the third reference plane. The radially inner direction is the direction toward the central axis of the molded oral care product. The radially outer direction is the direction opposite to the radially inner direction. The radial direction is a general term for the radially inner direction and the radially outer direction.

[0069] For example, a molded oral care product may have a first circumferential direction and a second circumferential direction. The first circumferential direction is the direction along the outer shape of the cross section perpendicular to the central axis of the molded product. The second circumferential direction is the direction opposite to the first circumferential direction. The circumferential direction is a general term for the first circumferential direction and the second circumferential direction.

[0070] 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.

[0071] 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.

[0072] (First embodiment) 1 and 2. In this 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.

[0073] 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.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] Please refer to Figures 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 exemplified. In one example, the molded article 20 includes a primary molded portion P and a secondary molded portion Q. The outer surface 20F of the molded article 20 includes the outer surface PF of the primary molded portion P and the outer surface QF of the secondary molded portion Q.

[0087] The material of the primary molded portion P is selected in consideration of, for example, softening and hardening properties, hardness and softness properties, and transparency.

[0088] 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.

[0089] In one example, a hard and opaque thermoplastic resin is selected as the material of the primary molded portion P. Examples of the hard and opaque thermoplastic resin include polyacetal, polypropylene, and saturated polyester resin.

[0090] 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.

[0091] 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.

[0092] 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.

[0093] 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.

[0094] 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.

[0095] 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.

[0096] 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.

[0097] 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.

[0098] 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.

[0099] The relationship between the protrusion 220 and the gate of the molded product 20 will be illustrated. In a first example, the protrusion 220 is included in the primary molding part P. The protrusion 220 is configured as a separate part from the gate of the primary molding part P. In a 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.

[0100] In a third example, the protrusion 220 is included in the secondary molding portion Q. The protrusion 220 is configured as a separate portion from the gate of the secondary molding portion Q. In a fourth example, the protrusion 220 is included in the secondary molding portion Q. The protrusion 220 includes the gate of the secondary molding portion Q.

[0101] 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.

[0102] 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.

[0103] The primary body component PA includes a coating target portion PC. The coating target portion PC is the portion that is coated by the coating portion Q40 of the secondary molded portion Q. The configuration of the coating target portion PC can be selected arbitrarily. The configuration of the coating target portion PC is not limited to the exemplified configuration.

[0104] The configuration of the coated part PC will be illustrated below. In a first example, the coated part PC includes at least a part of the primary handle component P10. In a second example, the coated part PC includes at least a part of the neck 120. In a third example, the coated part PC includes at least a part of the head 130. In a fourth example, the coated part PC includes at least two of the configurations of the first to third examples.

[0105] In one example, the portion to be coated PC extends in an axial direction. The portion to be coated PC includes a first end portion PCA, a second end portion PCB, and a middle portion PCC. The first end portion PCA is located in a first axial direction relative to a center of the portion to be coated PC in the axial direction. The second end portion PCB is located in a second axial direction relative to the center of the portion to be coated PC in the axial direction.

[0106] The intermediate portion PCC is located between the first end portion PCA and the second end portion PCB. The intermediate portion PCC includes a first intermediate portion PCCA and a second intermediate portion PCCB. The first intermediate portion PCCA is located in a first axial direction relative to the center of the portion PC to be covered in the axial direction. The first intermediate portion PCCA is connected to the first end portion PCA. The second intermediate portion PCCB is located in a second axial direction relative to the center of the portion PC to be covered in the axial direction. The second intermediate portion PCCB is connected to the second end portion PCB.

[0107] 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.

[0108] 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.

[0109] 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.

[0110] 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.

[0111] 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 intermediate surface P12. The intermediate surface P12 is the surface between the upper part of the step P11 and the lower part of the step P11.

[0112] The intermediate plane P12 is provided between the outer surface PF of the second end 120B of the neck 120 and the outer surface PF of the first end P10A of the primary handle component P10. The intermediate plane P12 is, for example, a plane. The intermediate plane P12 is, for example, parallel to the third reference plane.

[0113] 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.

[0114] A plurality of protrusions P13 are provided on the first end P10A. The protrusions P13 protrude from the outer surface PF 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.

[0115] 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.

[0116] 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.

[0117] 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.

[0118] 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.

[0119] 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.

[0120] 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.

[0121] 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.

[0122] 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.

[0123] 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.

[0124] 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.

[0125] 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.

[0126] 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.

[0127] 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.

[0128] 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 joined to the outer surface PF of the primary handle component P10. The secondary handle component Q10 is configured to cover at least a portion of the outer surface PF of the primary handle component P10.

[0129] 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.

[0130] 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.

[0131] 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 intermediate surface P12 of the step portion P11 of the primary body component PA. The end surface Q10E contacts the intermediate surface P12 of the step portion P11.

[0132] 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.

[0133] In one example, the secondary handle component Q10 includes a first component Q11 and a second component Q12. The second component Q12 is located in a second axial direction relative to the first component Q11.

[0134] The first component part Q11 contains the first end part P10A, the constricted part P20, and the tapered part P30 of the primary handle component P10. The first component part Q11 covers the outer surface PF of the first end part P10A, the outer surface PF of the constricted part P20, and the outer surface PF of the tapered part P30.

[0135] The main body protrusion P40 of the primary handle component P10 is disposed inside the second component Q12. The second component Q12 covers the side surface of the outer surface PF of the main body protrusion P40.

[0136] 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.

[0137] 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.

[0138] 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.

[0139] 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 PF of the first end P20A of the constricted portion P20.

[0140] 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 PF of the second end P20B of the constricted portion P20.

[0141] 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 constituent portion P10. The middle portion Q20C of the constricted portion Q20 covers the outer surface PF of the middle portion P20C of the constricted portion P20.

[0142] In one example, the secondary handle component Q10 includes a tapered portion Q30. The tapered portion Q30 includes a portion of the first component Q11 and a second component 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.

[0143] 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.

[0144] 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.

[0145] 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.

[0146] 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.

[0147] 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.

[0148] 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.

[0149] 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.

[0150] 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.

[0151] 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.

[0152] 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.

[0153] 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.

[0154] 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 PF of the second end 110B of the handle 110.

[0155] Please refer to Figures 1 to 4. In one example, the molded article 20 includes 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 exemplified. 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.

[0156] 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.

[0157] 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.

[0158] 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.

[0159] 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.

[0160] 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.

[0161] 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.

[0162] 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.

[0163] 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 main body protrusion P40.

[0164] 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.

[0165] 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.

[0166] 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.

[0167] 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.

[0168] 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.

[0169] 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.

[0170] 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.

[0171] 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 component Q11, the second component Q12, the constricted portion Q20, and the tapered portion Q30.

[0172] 9 to 19. In one example, the decorative portion 400 includes a surface undulation portion 410. The configuration of the surface undulation portion 410 can be selected arbitrarily. The configuration of the surface undulation portion 410 is not limited to the configuration exemplified.

[0173] The surface relief 410 is formed by primary decoration. In one example, the mold used to manufacture the molded product 20 includes a specific surface for decoration. The specific surface has a shape corresponding to the surface relief 410. The surface relief 410 is formed by transferring the specific surface of the mold.

[0174] In one example, the surface undulations 410 are provided on the primary molded part P. The surface undulations 410 are provided on the primary body component PA. The surface undulations 410 are provided on the primary handle component P10. The surface undulations 410 are configured to impart irregularities to the outer surface PF of the primary handle component P10.

[0175] In one example, a reference line is defined for the surface undulations 410. The surface undulations 410 includes a set of outer peripheries spaced apart in the axial, width, or circumferential direction. The reference line is defined, for example, as follows: In a first example, a line located midway between the set of outer peripheries is defined as the reference line. In a second example, the outer periphery of the surface undulations 410, which is configured to extend along the extension direction of the surface undulations 410, is defined as the reference line.

[0176] The surface undulation 410 includes a first end 411 and a second end 412. The first end 411 is located in a first axial direction relative to a center of a reference line of the surface undulation 410. The second end 412 is located in a second axial direction relative to the center of a reference line of the surface undulation 410.

[0177] The first end 411 is provided at a first end P10A of the primary handle component P10. The first end 411 is provided at a second side 100D of the primary handle component P10. The first end 411 includes a first tip 411A.

[0178] The second end 412 is provided at a second end P10B of the primary handle component P10. The second end 412 is provided at a first side 100C of the primary handle component P10. The second end 412 includes a second tip 412A.

[0179] The surface relief 410 includes one or more geometrically shaped surfaces 420. Examples of shapes of the geometrically shaped surfaces 420 include polygons, ellipses, sectors, and Reuleaux polygons. Ellipses include ellipses having major and minor axes, and circles.

[0180] Examples of polygons include regular polygons and general polygons. Examples of regular polygons include equilateral triangles, squares, and regular pentagons. Examples of general polygons include triangles, quadrilaterals, pentagons, hexagons, heptagons, octagons, nonagons, and decagons. Examples of triangles include isosceles triangles, right triangles, and right-angled isosceles triangles. Examples of quadrilaterals include rectangles, rhombus, parallelograms, trapezoids, isosceles trapezoids, and kite shapes.

[0181] In one example, the undulating surface portion 410 includes a plurality of geometrically shaped surfaces 420. The following illustrates the configuration of the undulating surface portion 410 based on the relationship between the plurality of geometrically shaped surfaces 420. In a first example, the type of figure is the same for all of the plurality of geometrically shaped surfaces 420. In a second example, the type of figure is the same for some of the plurality of geometrically shaped surfaces 421. In a third example, the type of figure is different for all of the plurality of geometrically shaped surfaces 420.

[0182] Examples 11 to 13 are examples of the details of the first example. In the 11th example, the figures are congruent for all of the plurality of species geometric-shaped surfaces 420. In the 12th example, the figures are congruent for some of the plurality of geometric-shaped surfaces 420. In the 13th example, the figures are non-congruent for all of the plurality of geometric-shaped surfaces 420.

[0183] Examples 21 to 23 are examples of the second example in detail. In the 21st example, the figures are congruent for all of the plurality of geometrically shaped surfaces 420 of the same type. In the 22nd example, the figures are congruent for some of the plurality of geometrically shaped surfaces 420 of the same type. In the 23rd example, the figures are non-congruent for all of the plurality of geometrically shaped surfaces 420 of the same type.

[0184] Examples of arrangement patterns for the plurality of geometrically shaped surfaces 420 include a first arrangement pattern and a second arrangement pattern. In the first arrangement pattern, the plurality of geometrically shaped surfaces 420 are arranged regularly. In the second arrangement pattern, the plurality of geometrically shaped surfaces 420 are arranged irregularly.

[0185] Details of the first arrangement configuration include, for example, an eleventh arrangement configuration and a twelfth arrangement configuration. In the eleventh arrangement configuration, the plurality of geometrically shaped surfaces 420 are arranged along a reference line. Examples of the reference line include a straight line, a wavy line, a spiral, and a curved line along the circumferential direction. In the twelfth arrangement configuration, the plurality of geometrically shaped surfaces 420 are arranged based on a reference different from the reference line.

[0186] Details of the eleventh arrangement include, for example, arrangement 111 and arrangement 121. In arrangement 111, each geometrically shaped surface 420 included in the plurality of geometrically shaped surfaces 420 is in contact with another geometrically shaped surface 420 included in the plurality of geometrically shaped surfaces 420. In arrangement 121, each geometrically shaped surface 420 included in the plurality of geometrically shaped surfaces 420 is not in contact with another geometrically shaped surface 420 included in the plurality of geometrically shaped surfaces 420.

[0187] The content of the 111th arrangement form will be illustrated when the geometric shape surface 420 corresponding to the 111th arrangement form is a polygon. Each geometric shape surface 420 included in the plurality of geometric shape surfaces 420 shares at least one of an edge and a vertex with at least one other geometric shape surface 420 included in the plurality of geometric shape surfaces 420.

[0188] The plurality of geometrically shaped surfaces 420 arranged based on the first arrangement configuration are referred to as the "first group." The plurality of geometrically shaped surfaces 420 arranged based on the eleventh arrangement configuration are referred to as the "eleventh group." The plurality of geometrically shaped surfaces 420 arranged based on the eleventh arrangement configuration are referred to as the "eleventh group." The plurality of geometrically shaped surfaces 420 arranged based on the eleventh arrangement configuration are referred to as the "eleventh group." The plurality of geometrically shaped surfaces 420 arranged based on the twenty-first arrangement configuration are referred to as the "twenty-first group."

[0189] The plurality of geometrically shaped surfaces 420 arranged based on the twelfth arrangement form will be referred to as the “twelfth group.” The plurality of geometrically shaped surfaces 420 arranged based on the second arrangement form will be referred to as the “second group.” The configuration of the surface undulations 410 based on the arrangement form of the plurality of geometrically shaped surfaces 420 will be exemplified below.

[0190] In a first example, the surface relief 410 includes at least one first group and no second group. In a second example, the surface relief 410 includes at least one first group and at least one second group.

[0191] In a third example, the surface relief 410 includes at least one second group and no first group. In a fourth example, given the first or second example, the surface relief 410 includes multiple first groups.

[0192] In a fifth example, based on the fourth example, the plurality of first groups includes at least one eleventh group and at least one twelfth group. In a sixth example, based on the fourth example, the plurality of first groups includes a plurality of eleventh groups and at least one twelfth group.

[0193] In a seventh example, based on the fourth example, the plurality of first groups includes a plurality of eleventh groups and a plurality of twelfth groups. In an eighth example, based on the fourth example, the plurality of first groups includes a plurality of eleventh groups and does not include a twelfth group.

[0194] In a ninth example, based on the fourth example, the plurality of first groups includes at least one eleventh group and a plurality of twelfth groups. In a tenth example, based on the fourth example, the plurality of first groups includes a plurality of twelfth groups and does not include an eleventh group.

[0195] In an eleventh example, based on any of the sixth to eighth examples, the plurality of eleventh groups includes at least one eleventh group and at least one eleventh group. In a twelfth example, based on any of the sixth to eighth examples, the plurality of eleventh groups includes a plurality of eleventh groups and at least one eleventh group.

[0196] In a thirteenth example, based on any one of examples six to eight, the plurality of eleventh groups includes a plurality of 111 groups and a plurality of 121 groups. In a fourteenth example, based on any one of examples six to eight, the plurality of eleventh groups includes a plurality of 111 groups and does not include a 121 group.

[0197] In a 15th example, based on any of Examples 6 to 8, the multiple 11 groups include at least one 111 group and multiple 121 groups. In a 16th example, based on any of Examples 6 to 8, the multiple 11 groups include multiple 121 groups and do not include a 111 group.

[0198] In an example where the surface undulations 410 include at least one 111th group, the surface undulations 410 include one or more peaks 430 and / or one or more valleys 440. A peak 430 is formed by at least two adjacent geometric faces 420. A valley 440 is formed by at least two adjacent geometric faces 420.

[0199] The following are examples of the configuration of the mountain-shaped portion 430. In a first example, when two adjacent geometrically shaped surfaces 420 share a side, the mountain-shaped portion 430 is configured with the shared side as the apex. In a second example, when at least two adjacent geometrically shaped surfaces 420 share a vertex, the mountain-shaped portion 430 is configured with the shared vertex as the apex.

[0200] The following are examples of the configuration of the valley-shaped portion 440. In a first example, when two adjacent geometrically shaped surfaces 420 share a side, the valley-shaped portion 440 is configured with the shared side as the bottom. In a second example, when at least two adjacent geometrically shaped surfaces 420 share a vertex, the valley-shaped portion 440 is configured with the shared vertex as the top.

[0201] In the illustrated example, the surface undulations 410 include a plurality of geometrically shaped surfaces 420. The plurality of geometrically shaped surfaces 420 are arranged in the 111th arrangement. The surface undulations 410 include one 111th group.

[0202] The plurality of geometrically shaped surfaces 420 constituting the 111th group are classified into, for example, first type geometrically shaped surfaces 421 and second type geometrically shaped surfaces 422. The plurality of geometrically shaped surfaces 420 includes the plurality of first type geometrically shaped surfaces 421 and the plurality of second type geometrically shaped surfaces 422.

[0203] The first type geometric shape surface 421 is a surface that mainly constitutes the surface undulations 410. The second type geometric shape surface 422 is a surface that constitutes the surface undulations 410 in association with the first type geometric shape surface 421. In Figures 13, 14, 18, and 19, the second type geometric shape surface 422 is indicated by dots.

[0204] The shape of the first type geometric-shaped surface 421 is a polygon. In the illustrated example, the shape of the first type geometric-shaped surface 421 is an isosceles triangle. All of the multiple first type geometric-shaped surfaces 421 are congruent. The shape of the second type geometric-shaped surface 422 is different from the shape of the first type geometric-shaped surface 421. In the illustrated example, the shape of the second type geometric-shaped surface is, for example, a triangle, a figure in which one side of a triangle is replaced with an arc, or a figure composed of an arc and a chord.

[0205] Some of the plurality of second type geometric shape surfaces 422 are provided at the first end 411 of the surface undulation portion 410. Other parts of the plurality of second type geometric shape surfaces 422 are provided at the second end 412 of the surface undulation portion 410.

[0206] The outer surface PF of the primary handle component P10 includes a base surface P10F and a geometric surface 420. The base surface P10F is the surface surrounding the geometric surface 420. The base surface P10F is a curved surface. The geometric surface 420 is a plane.

[0207] For example, the geometric surface 420 intersects at least one of the first reference surface, the second reference surface, and the third reference surface.

[0208] At least one geometrically shaped surface 420 included in the surface undulation portion 410 faces the inside of the secondary molded portion Q in the first axial direction.

[0209] At least one geometrically shaped surface 420 included in the surface undulation portion 410 faces the inside of the secondary molded portion Q in the second axial direction.

[0210] At least one geometrically shaped surface 420 included in the surface undulation portion 410 faces the inside of the secondary molded portion Q in the first circumferential direction.

[0211] At least one geometrically shaped surface 420 included in the surface undulation portion 410 faces the inside of the secondary molded portion Q in the second circumferential direction.

[0212] The arrangement form for the plurality of geometrically shaped surfaces 420 is the 111th arrangement form. The reference line is a spiral. The relationship between two adjacent geometrically shaped surfaces 420 is classified into a first relationship, a second relationship, and a third relationship.

[0213] In a first relationship, two adjacent geometric faces 420 share an equal side of an isosceles triangle. In a second relationship, two adjacent geometric faces 420 share a vertex of an isosceles triangle. In a third relationship, two adjacent geometric faces 420 share a base of an isosceles triangle.

[0214] The surface relief 410 includes a plurality of chevrons 430. Each chevron 430 is formed by two geometrically shaped surfaces 420 having a first relationship or two geometrically shaped surfaces 420 having a second relationship. The top of each chevron 430 is formed by an equilateral side shared by the two geometrically shaped surfaces 420 or a vertex shared by the two geometrically shaped surfaces 420.

[0215] The surface undulations 410 include a plurality of ridges 430. A valley 440 is formed by two geometrically shaped surfaces 420 having a third relationship. The bottom of the valley 440 is formed by a base shared by the two geometrically shaped surfaces 420.

[0216] The surface relief 410 includes a periphery 450. The periphery 450 forms the boundary between the surface relief 410 and the base surface P10F of the primary handle component P10.

[0217] The outer periphery 450 includes, for example, a first outer periphery 451, a second outer periphery 452, a third outer periphery 453, and a fourth outer periphery 454.

[0218] The first outer circumferential portion 451 has a spiral shape and includes a first tip 451A and a second tip 451B.

[0219] The second outer periphery 452 has a spiral shape and includes a first tip 452A and a second tip 452B.

[0220] The third outer periphery 453 is located between the first tip 451A of the first outer periphery 451 and the first tip 452A of the second outer periphery 452. The third outer periphery 453 has a linear shape. The linear third outer periphery 453 is formed by the multiple second-type geometric shape surfaces 422 provided on the first end 411 of the surface undulations 410.

[0221] The third outer periphery 453 includes a first tip 453A and a second tip 453B. The first tip 453A is connected to the first tip 451A of the first outer periphery 451. The second tip 453B is connected to the first tip 452A of the second outer periphery 452.

[0222] The fourth outer periphery 454 is located between the second tip 451B of the first outer periphery 451 and the second tip 452B of the second outer periphery 452. The fourth outer periphery 454 has a linear shape. The linear fourth outer periphery 454 is formed by the multiple second-type geometric shape surfaces 422 provided on the second end 412 of the surface undulation portion 410.

[0223] The fourth outer periphery 454 includes a first tip 454A and a second tip 454B. The first tip 454A is connected to a second tip 451B of the first outer periphery 451. The second tip 454B is connected to a second tip 452B of the second outer periphery 452.

[0224] The connection between first tip 451A of first outer peripheral portion 451 and first tip 453A of third outer peripheral portion 453 corresponds to first tip 411A of first end 411 of surface undulation portion 410.

[0225] The connection between the second tip 451B of the second outer periphery 452 and the second tip 454B of the fourth outer periphery 454 corresponds to the second tip 412A of the second end 412 of the surface undulation portion 410.

[0226] Please refer to Figures 1 to 4. The secondary molded part Q includes a covering part Q40. The configuration of the covering part Q40 can be selected arbitrarily. The configuration of the covering part Q40 is not limited to the configuration exemplified. The covering part Q40 is configured to cover the outer surface PF of the covering target part PC of the primary molded part P. The covering part Q40 is joined to the outer surface PF of the covering target part PC.

[0227] The outer surface QF of the covering portion Q40 and the outer surface PF of the covering target portion PC located around the covering portion Q40 constitute part of the outer surface 20F of the molded article 20. In one example, the covering portion Q40 is configured so that the outer surface PF of the primary molded portion P located around the covering portion Q40 and the outer surface QF of the covering portion Q40 are continuous. Part of the outer surface 20F of the molded article 20, which is composed of the outer surface QF of the covering portion Q40 and the outer surface PF of the primary molded portion P located around the covering portion Q40, is a smooth surface.

[0228] The covering portion Q40 is configured to extend in the axial direction and includes a first end portion Q40A, a second end portion Q40B, and an intermediate portion Q40C in the axial direction.

[0229] The first end Q40A is located in the first axial direction relative to the center of the covering portion Q40 in the axial direction. The first end Q40A covers the outer surface PF of the primary handle component P10. The first end Q40A is joined to the outer surface PF of the primary handle component P10.

[0230] The second end Q40B is located in the second axial direction relative to the center of the covering portion Q40 in the axial direction. The second end Q40B covers the outer surface PF of the primary handle component P10. The second end Q40B is joined to the outer surface PF of the primary handle component P10.

[0231] The intermediate portion Q40C covers the outer surface PF of the primary handle component P10. The intermediate portion Q40C is joined to the outer surface PF of the primary handle component P10. The intermediate portion Q40C is provided between the first end portion Q40A and the second end portion Q40B in the axial direction.

[0232] The covering portion Q40 is configured to extend in the circumferential direction of the molded article 20. The covering portion Q40 is configured to go around the central axis of the molded article 20 once.

[0233] In the illustrated example, the covering portion Q40 is included in the secondary handle component Q10. The covering portion Q40 is configured as the secondary handle component Q10.

[0234] The first end Q40A of the covering portion Q40 corresponds to the first end Q10A of the secondary handle component Q10. The second end Q40B of the covering portion Q40 corresponds to the second end Q10B of the secondary handle component Q10. The middle portion Q40C of the covering portion Q40 corresponds to the middle portion of the secondary handle component Q10 located between the first end Q10A and the second end Q10B.

[0235] In one example, the covering portion Q40 includes a decorative exterior portion Q50. The configuration of the decorative exterior portion Q50 can be selected arbitrarily. The configuration of the decorative exterior portion Q50 is not limited to the configuration shown in the example. The decorative exterior portion Q50 is configured to cover the decorative portion 400.

[0236] Examples A and B are examples of the portion where the decorative exterior portion Q50 is provided.

[0237] In Example A, a decorative portion 400 is provided on at least the primary molded portion P of the molded product 20. A decorative exterior portion Q50 is provided on at least the outer surface PF of the primary molded portion P. Example A can take the form of at least one of Example A1 and Example A2, for example.

[0238] In Example A1, a decorative portion 400 is provided on at least the primary body constituent portion PA of the primary molded part P. A decorative exterior portion Q50 is provided on at least the outer surface PF of the primary body constituent portion PA. Example A1 can take the form of at least one of Examples A11 to A13, for example.

[0239] In example A2, a decorative portion 400 is provided on at least the protruding portion 220 of the primary molded portion P. A decorative exterior portion Q50 is provided on at least the outer surface PF of the protruding portion 220.

[0240] In Example A11, at least the primary handle component P10 of the primary body component PA is provided with a decorative portion 400. The decorative exterior portion Q50 is provided on at least the outer surface PF of the primary handle component P10. Example A11 can take the form of at least one of Examples A111 to A119, for example.

[0241] In example A12, at least the neck 120 of the primary body constituent part PA is provided with a decorative part 400. At least the outer surface PF of the neck 120 is provided with a decorative exterior part Q50.

[0242] In example A13, at least the head 130 of the primary body constituent part PA is provided with a decorative part 400. A decorative exterior part Q50 is provided on at least the outer surface PF of the head 130.

[0243] In example A111, at least the first end P10A of the primary handle constituent part P10 is provided with a decorative part 400. The decorative exterior part Q50 is provided on at least the outer surface PF of the first end P10A.

[0244] In example A112, at least the second end P10B of the primary handle constituent part P10 is provided with a decorative part 400. A decorative exterior part Q50 is provided on at least the outer surface PF of the second end P10B.

[0245] In example A113, at least the first side portion P10C of the primary handle constituent portion P10 is provided with a decorative portion 400. The decorative exterior portion Q50 is provided on at least the outer surface PF of the first side portion P10C.

[0246] In example A114, at least the second side portion P10D of the primary handle constituent portion P10 is provided with a decorative portion 400. The decorative exterior portion Q50 is provided on at least the outer surface PF of the second side portion P10D.

[0247] In example A115, at least the step portion P11 of the primary handle constituent portion P10 is provided with a decorative portion 400. The decorative exterior portion Q50 is provided on at least the outer surface PF of the step portion P11.

[0248] In example A116, at least the protruding portion P13 of the primary handle constituent portion P10 is provided with a decorative portion 400. The decorative exterior portion Q50 is provided on at least the outer surface PF of the protruding portion P13.

[0249] In example A117, at least the constricted portion P20 of the primary handle constituent portion P10 is provided with a decorative portion 400. The decorative exterior portion Q50 is provided on at least the outer surface PF of the constricted portion P20.

[0250] In example A118, at least the tapered portion P30 of the primary handle constituent portion P10 is provided with a decorative portion 400. The decorative exterior portion Q50 is provided on at least the outer surface PF of the tapered portion P30.

[0251] In example A119, at least the main body protrusion P40 of the primary handle constituent part P10 is provided with a decorative part 400. A decorative exterior part Q50 is provided on at least the outer surface PF of the main body protrusion P40.

[0252] In Example B, a decorative portion 400 is provided on at least the secondary molded portion Q of the molded product 20. A decorative exterior portion Q50 is provided on at least the outer surface QF of the secondary molded portion Q. Example B can take the form of Example B1, for example.

[0253] In Example B1, a decorative portion 400 is provided on at least the secondary main body component QA of the secondary molded portion Q. A decorative exterior portion Q50 is provided on at least the outer surface QF of the secondary main body component QA. Example B1 can take the form of, for example, Example B11.

[0254] In Example B11, at least the secondary handle component Q10 of the secondary body component QA is provided with a decorative portion 400. The decorative exterior portion Q50 is provided on at least the outer surface QF of the secondary handle component Q10. Example B11 can take the form of at least one of Examples B111 to B118, for example.

[0255] In example B111, at least the first end Q10A of the secondary handle component Q10 is provided with a decorative portion 400. The decorative exterior portion Q50 is provided on at least the outer surface QF of the first end Q10A.

[0256] In example B112, at least the second end Q10B of the secondary handle component Q10 is provided with a decorative portion 400. The decorative exterior portion Q50 is provided on at least the outer surface QF of the second end Q10B.

[0257] In example B113, at least the first side portion Q10C of the secondary handle component Q10 is provided with a decorative portion 400. The decorative exterior portion Q50 is provided on at least the outer surface QF of the first side portion Q10C.

[0258] In Example B114, at least the second side portion Q10D of the secondary handle component Q10 is provided with a decorative portion 400. The decorative exterior portion Q50 is provided on at least the outer surface QF of the second side portion Q10D.

[0259] In example B115, at least the first component Q11 of the secondary handle component Q10 is provided with a decorative portion 400. The decorative exterior portion Q50 is provided on at least the outer surface QF of the first component Q11.

[0260] In example B116, at least the second component Q12 of the secondary handle component Q10 is provided with a decorative portion 400. The decorative exterior portion Q50 is provided on at least the outer surface QF of the second component Q12.

[0261] In example B117, at least the constricted portion Q20 of the secondary handle component Q10 is provided with a decorative portion 400. The decorative exterior portion Q50 is provided on at least the outer surface QF of the constricted portion Q20.

[0262] In example B118, at least the tapered portion Q30 of the secondary handle component Q10 is provided with a decorative portion 400. A decorative exterior portion Q50 is provided on at least the outer surface QF of the tapered portion Q30.

[0263] In the illustrated example, the decorative exterior part Q50 is included in the secondary main body component QA. The decorative exterior part Q50 is included in the secondary handle component Q10. The decorative exterior part Q50 is configured to cover the surface undulations 410 provided on the primary handle component P10. In one example, the outer surface QF of the decorative exterior part Q50 is smooth compared to the outer surface PF of the surface undulations 410.

[0264] 20 to 22. The molded product 20 includes an exposure structure 500. The exposure structure 500 is configured so that the portion of the secondary molded part Q that is exposed relative to the covering part Q40 is included in the primary molded part P. The configuration of the exposure structure 500 can be selected arbitrarily. The configuration of the exposure structure 500 is not limited to the exemplified configuration.

[0265] The exposure structure 500 includes one or more through-holes P100. The configuration of the through-holes P100 can be selected arbitrarily. The configuration of the through-holes P100 is not limited to the configuration exemplified. The through-holes P100 are provided in the primary molding part P. The through-holes P100 are configured to transmit the force applied to the primary molding part P to the mold in the secondary molding process in which the secondary molding part Q is molded.

[0266] The through portion P100 is configured to protrude relative to the outer surface PF of the coating target portion PC of the primary molded part P. In one example, the through portion P100 is configured to protrude in a direction that includes a radially outward component. The through portion P100 includes an outer surface P110. The outer surface P110 includes a top surface P111 and a side surface P112.

[0267] The exposure structure 500 includes one or more through-hole arrangement portions Q100. The configuration of the through-hole arrangement portion Q100 can be selected arbitrarily. The configuration of the through-hole arrangement portion Q100 is not limited to the configuration illustrated. The through-hole arrangement portion Q100 is provided in the secondary molded portion Q. The through-hole arrangement portion Q100 is configured so that the through-hole portion P100 can be placed therein.

[0268] The through-hole arrangement portion Q100 includes a through-hole space Q101, an inner peripheral surface Q102, and two openings Q103. The through-hole space Q101 is configured so that the through-hole portion P100 can be arranged therein. The inner peripheral surface Q102 defines the through-hole space Q101. One opening Q103 opens to the outer surface QF of the secondary molded portion Q. The other opening Q103 opens to the inner peripheral surface of the secondary molded portion Q that faces the outer surface PF of the primary molded portion P.

[0269] The shape of the top surface P111 of the through portion P100 will be illustrated below. In a first example, at least a portion of the top surface P111 is curved. The center of the curved surface is set in the radially inward or radially outward direction relative to the top surface P111. Examples 11 and 12 are examples of the first example in more detail. In the 11th example, the entire top surface P111 is curved. In the 12th example, only a portion of the top surface P111 is curved. Another portion of the top surface P111 is not curved.

[0270] In the second example, at least a portion of the top surface P111 is a flat surface. Examples 21 and 22 are examples of details of the second example. In the 21st example, the entire top surface P111 is a flat surface. In the 22nd example, a portion of the top surface P111 is a flat surface. Another portion of the top surface P111 is a surface other than a flat surface.

[0271] The through portion P100 includes an exposed surface P101. The exposed surface P101 is configured to be exposed to the covering portion Q40 of the secondary molding portion Q. The exposed surface P101 is configured to come into contact with the mold in the secondary molding process. The exposed surface P101 forms part of the outer surface 20F of the molded product 20. The exposed surface P101 is included in the outer surface P110 of the through portion P100.

[0272] In one example, the through portion P100 is provided in the primary molding portion P so that the force that the primary molding portion P receives from the resin material corresponding to the secondary molding portion Q can be transmitted from the exposed surface P101 to the mold so as to deform the primary molding portion P during the secondary molding process in which the secondary molding portion Q is molded.

[0273] The through portion P100 is divided into, for example, a first end P100A, a second end P100B, and an intermediate portion P100C in the height direction of the through portion P100. The first end P100A corresponds to the tip of the through portion P100. The second end P100B corresponds to the base of the through portion P100. The intermediate portion P100C is located between the first end P100A and the second end P100B. A top surface P111 is formed at the tip of the first end P100A.

[0274] Examples of structures that define the relationship between the exposed surface P101 of the through portion P100 and the outer surface QF of the secondary molded portion Q include a depressed structure 501, a smooth structure 502, and a protruding structure 503. The configurations of the depressed structure 501, the smooth structure 502, and the protruding structure 503 can be selected arbitrarily. The configurations of the depressed structure 501, the smooth structure 502, and the protruding structure 503 are not limited to the exemplified configurations.

[0275] Please refer to Fig. 20. In the recessed structure 501, the penetrating portion P100 is recessed with respect to the outer surface QF of the covering portion Q40, and is configured so that a step portion 501A is formed between the penetrating portion P100 and the outer surface QF.

[0276] The following are examples of the configuration of the depressed structure 501. In a first example, the entire top surface P111 of the through portion P100 is exposed to the covering portion Q40. The side surface P112 of the through portion P100 is covered by the covering portion Q40. The exposed surface P101 is made up of the entire top surface P111.

[0277] In the second example, a portion of the top surface P111 of the through portion P100 is exposed to the covering portion Q40. Another portion of the top surface P111 is covered by the covering portion Q40. The portion of the top surface P111 is, for example, a portion located inside the periphery of the top surface P111. The other portion of the top surface P111 is, for example, the periphery of the top surface P111. The side surface P112 of the through portion P100 is covered by the covering portion Q40. The exposed surface P101 is formed by a portion of the top surface P111.

[0278] See Fig. 21. In the smooth structure 502, the through portion P100 is configured so that the exposed surface P101 formed by the top surface P111 of the through portion P100 and the outer surface QF of the secondary molded portion Q located around the exposed surface P101 are smoothly connected. A portion of the outer surface 20F of the molded article 20 formed by the exposed surface P101 and the outer surface QF of the secondary molded portion Q located around the exposed surface P101 is a smooth surface.

[0279] The configuration of the smooth structure 502 will be illustrated. In the first example, the entire top surface P111 of the through portion P100 is exposed to the covering portion Q40. The side surface P112 of the through portion P100 is covered by the covering portion Q40. The exposed surface P101 is made up of the entire top surface P111.

[0280] In the second example, a portion of the top surface P111 of the through portion P100 is exposed to the covering portion Q40. Another portion of the top surface P111 is covered by the covering portion Q40. The portion of the top surface P111 is, for example, a portion located inside the periphery of the top surface P111. The other portion of the top surface P111 is, for example, the periphery of the top surface P111. The side surface P112 of the through portion P100 is covered by the covering portion Q40. The exposed surface P101 is formed by a portion of the top surface P111.

[0281] 22. In the protruding structure 503, the penetrating portion P100 protrudes from the outer surface QF of the covering portion Q40, and is configured so as to form a step between the penetrating portion P100 and the outer surface QF. The penetrating portion P100 includes a penetrating portion protrusion 503A that protrudes from the outer surface QF.

[0282] The configuration of the protruding structure 503 will be illustrated. In a first example, the penetrating portion protruding portion 503A includes all or part of the first end portion P100A of the penetrating portion P100. The outer surface P110 of the penetrating portion protruding portion 503A includes a top surface P111 and a side surface P112. The side surface P112 of the penetrating portion protruding portion 503A includes all or part of the side surface P112 of the first end portion P100A.

[0283] The entire top surface P111 of the penetrating portion protrusion 503A is exposed to the covering portion Q40. The side surface P112 of the penetrating portion protrusion 503A is exposed to the covering portion Q40. The other side surface P112 is covered by the covering portion Q40. The exposed surface P101 is made up of the top surface P111 and the side surface P112 of the penetrating portion protrusion 503A.

[0284] In a second example, the piercing portion protrusion 503A includes the entire first end P100A of the piercing portion P100 and part or all of the middle portion P100C. The outer surface P110 of the piercing portion protrusion 503A includes a top surface P111 and a side surface P112. The side surface P112 of the piercing portion protrusion 503A includes the entire side surface P112 of the first end P100A and part or all of the side surface P112 of the middle portion P100C.

[0285] The entire top surface P111 of the penetrating portion protrusion 503A is exposed to the covering portion Q40. The side surface P112 of the penetrating portion protrusion 503A is exposed to the covering portion Q40. The other side surface P112 is covered by the covering portion Q40. The exposed surface P101 is made up of the top surface P111 and the side surface P112 of the penetrating portion protrusion 503A.

[0286] In a third example, the piercing portion protrusion 503A includes the entire first end P100A, the entire middle portion P100C, and part or all of the second end P100B of the piercing portion P100. The outer surface P110 of the piercing portion protrusion 503A includes a top surface P111 and a side surface P112. The side surface P112 of the piercing portion protrusion 503A includes the entire side surface P112 of the first end P100A, the entire side surface P112 of the middle portion P100C, and part or all of the side surface P112 of the second end P100B.

[0287] The entire top surface P111 of the penetrating portion protrusion 503A is exposed to the covering portion Q40. The side surface P112 of the penetrating portion protrusion 503A is exposed to the covering portion Q40. In an example in which the penetrating portion protrusion 503A includes a part of the second end portion P100B, the side surface P112 of the second end portion P100B that is not included in the penetrating portion protrusion 503A is covered by the covering portion Q40. The exposed surface P101 is composed of the top surface P111 and the side surface P112 of the penetrating portion protrusion 503A.

[0288] The outer surface QF of the secondary molded portion Q is divided into, for example, a front surface, a back surface, a first side surface, or a second side surface in the circumferential direction. The secondary molded portion Q includes a gate-related portion. The position of the gate-related portion in the circumferential direction is selected from, for example, the front surface, the back surface, the first side surface, or the second side surface of the secondary molded portion Q.

[0289] The gate-related portion includes the gate of the secondary molded portion Q, a gate mark of the secondary molded portion Q, or a gate-corresponding portion of the secondary molded portion Q where the gate existed during the secondary molding process. In one example, the gate-corresponding portion is formed by processing the outer surface QF of the secondary molded portion Q in the molded product 20 so that the gate of the secondary molded portion Q and the gate mark of the secondary molded portion Q do not remain.

[0290] The axial position of the gate-related portion is selected from, for example, the first end Q10A, the second end Q10B, the constricted portion Q20, or the tapered portion Q30. The axial position of the gate in the constricted portion Q20 is selected from, for example, the first end Q20A, the second end Q20B, or the middle portion Q20C.

[0291] The surface on which the gate-related portion is formed, among the front, back, first side, or second side of the secondary molding portion Q, is referred to as the "gate corresponding surface of the secondary molding portion Q." The surface located opposite the gate corresponding surface of the secondary molding portion Q is referred to as the "opposite surface of the secondary molding portion Q."

[0292] Of the front, back, first side, or second side of the secondary molding part Q, one surface located between the gate corresponding surface of the secondary molding part Q and the opposite surface of the secondary molding part Q is referred to as the "first intermediate surface of the secondary molding part Q." Of the front, back, first side, or second side of the secondary molding part Q, the other surface located between the gate corresponding surface of the secondary molding part Q and the opposite surface of the secondary molding part Q is referred to as the "second intermediate surface of the secondary molding part Q."

[0293] In an example where the gate-related portion is formed on the front surface of the secondary molded portion Q, the gate-corresponding surface of the secondary molded portion Q is the front surface of the secondary molded portion Q, and the opposite surface of the secondary molded portion Q is the back surface of the secondary molded portion Q. In an example where the gate-related portion is formed on the back surface of the secondary molded portion Q, the gate-corresponding surface of the secondary molded portion Q is the back surface of the secondary molded portion Q, and the opposite surface of the secondary molded portion Q is the front surface of the secondary molded portion Q.

[0294] In an example where the gate-related portion is formed on the first side surface of the secondary molded portion Q, the gate corresponding surface of the secondary molded portion Q is the first side surface of the secondary molded portion Q, and the opposite surface of the secondary molded portion Q is the second side surface of the secondary molded portion Q. In an example where the gate-related portion is formed on the second side surface of the secondary molded portion Q, the gate corresponding surface of the secondary molded portion Q is the second side surface of the secondary molded portion Q, and the opposite surface of the secondary molded portion Q is the first side surface of the secondary molded portion Q.

[0295] The outer surface PF of the primary molding portion P is divided into, for example, a front surface, a back surface, a first side surface, or a second side surface in the circumferential direction. Of the front surface, back surface, first side surface, or second side surface of the primary molding portion P, the surface that corresponds to the gate corresponding surface of the secondary molding portion Q is referred to as the "gate corresponding surface of the primary molding portion P." The surface that corresponds to the opposite surface of the secondary molding portion Q is referred to as the "opposite surface of the primary molding portion P." The surface that corresponds to the first intermediate surface of the secondary molding portion Q is referred to as the "first intermediate surface of the primary molding portion P." The surface that corresponds to the second intermediate surface of the secondary molding portion Q is referred to as the "second intermediate surface of the primary molding portion P."

[0296] The configuration of the exposed surface P101 of the through portion P100 will be illustrated below. In a first example, the exposed surface P101 includes at least a portion corresponding to the opposite surface of the secondary molded portion Q. The exposed surface P101 corresponding to the opposite surface of the secondary molded portion Q, together with the opposite surface of the adjacent secondary molded portion Q, constitutes part of the outer surface 20F of the molded product 20.

[0297] In the second example, the exposed surface P101 includes at least a portion corresponding to the opposite surface of the secondary molded portion Q. The exposed surface P101 corresponding to the opposite surface of the secondary molded portion Q, together with the opposite surface of the adjacent secondary molded portion Q, constitutes part of the outer surface 20F of the molded article 20.

[0298] In the third example, the exposed surface P101 includes at least a portion corresponding to the first intermediate surface of the secondary molded portion Q. The exposed surface P101 corresponding to the first intermediate surface of the secondary molded portion Q, together with the first intermediate surface of the adjacent secondary molded portion Q, constitutes part of the outer surface 20F of the molded product 20.

[0299] In the fourth example, the exposed surface P101 includes at least a portion corresponding to the second intermediate surface of the secondary molded portion Q. The exposed surface P101 corresponding to the second intermediate surface of the secondary molded portion Q, together with the second intermediate surface of the adjacent secondary molded portion Q, constitutes part of the outer surface 20F of the molded product 20.

[0300] In a fifth example, based on the first example, the exposed surface P101 further includes the configuration of at least one of the third and fourth examples. In a sixth example, based on the fifth example, the exposed surface P101 further includes the configuration of the second example.

[0301] 20 to 22. In one example, the through portion P100 includes a peripheral end portion P120. The peripheral end portion P120 includes a first peripheral end portion P121 and a second peripheral end portion P122. The first peripheral end portion P121 is located in a first circumferential direction relative to the center of the through portion P100 in the circumferential direction. The second peripheral end portion P122 is located in a second circumferential direction relative to the center of the through portion P100 in the circumferential direction.

[0302] The circumferential length of the through portion P100 is referred to as the “through portion circumferential length.” In one example, the maximum distance between the first circumferential end P121 and the second circumferential end P122 in the circumferential direction is selected as the through portion circumferential length.

[0303] The center of the through portion P100 in the circumferential direction is referred to as the "through portion circumferential center." Examples of the position of the through portion circumferential center are given below. In a first example, the through portion circumferential center is located on the opposite surface of the primary molding portion P. In a second example, the through portion circumferential center is located on the gate-corresponding surface of the primary molding portion P. In a third example, the through portion circumferential center is located on the first intermediate surface of the primary molding portion P. In a fourth example, the through portion circumferential center is located on the second intermediate surface of the primary molding portion P.

[0304] The position of the first peripheral end P121 in the circumferential direction will be illustrated below. In a first example, the first peripheral end P121 is located on the opposite surface of the primary molding portion P. In a second example, the first peripheral end P121 is located on the gate-corresponding surface of the primary molding portion P. In a third example, the first peripheral end P121 is located on the first intermediate surface of the primary molding portion P. In a fourth example, the first peripheral end P121 is located on the second intermediate surface of the primary molding portion P.

[0305] The position of the second peripheral end P122 in the circumferential direction will be illustrated below. In a first example, the second peripheral end P122 is located on the opposite surface of the primary molding portion P. In a second example, the second peripheral end P122 is located on the gate-corresponding surface of the primary molding portion P. In a third example, the second peripheral end P122 is located on the first intermediate surface of the primary molding portion P. In a fourth example, the second peripheral end P122 is located on the second intermediate surface of the primary molding portion P.

[0306] 23 and 24. In one example, the through-portion P100 includes an axial end P130. The axial end P130 includes a first axial end P131 and a second axial end P132. The first axial end P131 is located in a first axial direction relative to the center of the through-portion P100 in the axial direction. The second axial end P132 is located in a second axial direction relative to the center of the through-portion P100 in the axial direction. The axial length of the through-portion P100 is referred to as the "through-portion axial length." In one example, the maximum distance between the first axial end P131 and the second axial end P132 in the axial direction is selected as the through-portion axial length.

[0307] The center of the through-hole P100 in the axial direction is referred to as the "through-hole axial center." The positions of the through-hole axial centers are illustrated below. In a first example, the through-hole axial center is located at a first end PCA of the part to be coated PC. In a second example, the through-hole axial center is located at a second end PCB of the part to be coated PC. In a third example, the through-hole axial center is located at a middle part PCC of the part to be coated PC.

[0308] Examples 31 to 33 are examples of details of the third example. In the 31st example, the center of the penetration portion is located at the first intermediate portion PCCA of the part to be covered PC. In the 32nd example, the center of the penetration portion is located at the second intermediate portion PCCB of the part to be covered PC. In the 33rd example, the center of the penetration portion is located at the center of the intermediate portion PCC of the part to be covered PC.

[0309] The position of the first axial end P131 in the axial direction will be illustrated. In a first example, the first axial end P131 is located at a first end PCA of the part to be coated PC. In a second example, the first axial end P131 is located at a second end PCB of the part to be coated PC. In a third example, the first axial end P131 is located at a middle part PCC of the part to be coated PC.

[0310] Examples 31 to 33 are examples of the details of the third example. In the 31st example, the first shaft end P131 is located at the first intermediate part PCCA of the part to be coated PC. In the 32nd example, the first shaft end P131 is located at the second intermediate part PCCB of the part to be coated PC. In the 33rd example, the first shaft end P131 is located at the center of the intermediate part PCC of the part to be coated PC.

[0311] The position of the second axial end P132 in the axial direction will be illustrated. In a first example, the second axial end P132 is located at a first end PCA of the part to be coated PC. In a second example, the second axial end P132 is located at a second end PCB of the part to be coated PC. In a third example, the second axial end P132 is located at a middle part PCC of the part to be coated PC.

[0312] Examples 31 to 33 are examples of the details of the third example. In the 31st example, the second shaft end P132 is located at the first intermediate part PCCA of the part to be coated PC. In the 32nd example, the second shaft end P132 is located at the second intermediate part PCCB of the part to be coated PC. In the 33rd example, the second shaft end P132 is located at the center of the intermediate part PCC of the part to be coated PC.

[0313] 25 to 36. In one example, the through portion P100 is classified into a first type through portion P100X1 (hereinafter referred to as "first type through portion P100X1"), a second type through portion P100X2 (hereinafter referred to as "second type through portion P100X2"), and a third type through portion P100X3 (hereinafter referred to as "third type through portion P100X3") depending on the position of the axial center of the through portion.

[0314] The first type through-portion P100X1 is located at least at the first end PCA of the part to be covered PC, the second type through-portion P100X2 is located at least at the second end PCB of the part to be covered PC, and the third type through-portion P100X3 is located at least at the middle part PCC of the part to be covered PC.

[0315] The position of the axial center of the first type through-hole P100X1 is the first end PCA of the portion to be covered PC, the position of the axial center of the second type through-hole P100X2 is the second end PCB of the portion to be covered PC, and the position of the axial center of the third type through-hole P100X3 is the middle portion PCC of the portion to be covered PC.

[0316] In one example, the first-type through-portions P100X1 are classified into a first-type A through-portion, a first-type B through-portion, a first-type C through-portion, and a first-type D through-portion according to the position of the circumferential center of the through-portion.

[0317] The position of the circumferential center of the 1A type through portion is the opposite surface of the primary molding portion P. The position of the circumferential center of the 1B type through portion is the gate-corresponding surface of the primary molding portion P. The position of the circumferential center of the 1C type through portion is the first intermediate surface of the primary molding portion P. The position of the circumferential center of the 1D type through portion is the second intermediate surface of the primary molding portion P.

[0318] In one example, the second type through-portions P100X2 are classified into second type A through-portions, second type B through-portions, second type C through-portions, and second type D through-portions according to the position of the circumferential center of the through-portion.

[0319] The position of the circumferential center of the 2A type through portion is the opposite surface of the primary molding portion P. The position of the circumferential center of the 2B type through portion is the gate-corresponding surface of the primary molding portion P. The position of the circumferential center of the 2C type through portion is the first intermediate surface of the primary molding portion P. The position of the circumferential center of the 2D type through portion is the second intermediate surface of the primary molding portion P.

[0320] In one example, the third type through-portions P100X3 are classified into a third type A through-portion, a third type B through-portion, a third type C through-portion, and a third type D through-portion according to the position of the circumferential center of the through-portion.

[0321] The position of the circumferential center of the 3A type through portion is the opposite surface of the primary molding portion P. The position of the circumferential center of the 3B type through portion is the gate-corresponding surface of the primary molding portion P. The position of the circumferential center of the 3C type through portion is the first intermediate surface of the primary molding portion P. The position of the circumferential center of the 3D type through portion is the second intermediate surface of the primary molding portion P.

[0322] The configuration of the exposure structure 500 based on the classification of the penetration part P100 will be illustrated.

[0323] In the first example, the exposed structure 500 includes one or more first-type through-portions P100X1. The exposed structure 500 does not include the second-type through-portion P100X2 or the third-type through-portion P100X3.

[0324] In the second example, the exposed structure 500 includes one or more second-type through-portions P100X2. The exposed structure 500 does not include the first-type through-portion P100X1 and the third-type through-portion P100X3.

[0325] In the third example, the exposed structure 500 includes one or more third-type through-portions P100X3. The exposed structure 500 does not include the first-type through-portion P100X1 and the second-type through-portion P100X2.

[0326] In the fourth example, the exposed structure 500 includes one or more first-type through-portions P100X1 and one or more second-type through-portions P100X2. The exposed structure 500 does not include the third-type through-portion P100X3.

[0327] In the fifth example, the exposed structure 500 includes one or more first-type through-portions P100X1 and one or more third-type through-portions P100X3. The exposed structure 500 does not include the second-type through-portion P100X2.

[0328] In the sixth example, the exposed structure 500 includes one or more second-type through portions P100X2 and one or more third-type through portions P100X3. The exposed structure 500 does not include the first-type through portion P100X1.

[0329] In the seventh example, the exposed structure 500 includes one or more first-type through-portions P100X1, one or more second-type through-portions P100X2, and one or more third-type through-portions P100X3.

[0330] The number of first type through portions P100X1 included in the exposure structure 500 is referred to as "N1." The number of first type A through portions included in the exposure structure 500 is referred to as "N1A." The number of first type B through portions included in the exposure structure 500 is referred to as "N1B." The number of first type C through portions included in the exposure structure 500 is referred to as "N1C." The number of first type D through portions included in the exposure structure 500 is referred to as "N1D." N1 is the sum of N1A, N1B, N1C, and N1D.

[0331] The number of second type through portions P100X2 included in the exposure structure 500 is referred to as "N2". The number of second type A through portions included in the exposure structure 500 is referred to as "N2A". The number of second type B through portions included in the exposure structure 500 is referred to as "N2B". The number of second type C through portions included in the exposure structure 500 is referred to as "N2C". The number of second type D through portions included in the exposure structure 500 is referred to as "N2D". N2 is the sum of N2A, N2B, N2C, and N2D.

[0332] The number of third type through portions P100X3 included in the exposed structure 500 is referred to as "N3." The number of third type through portions included in the exposed structure 500 is referred to as "N3A." The number of third type through portions included in the exposed structure 500 is referred to as "N3B." The number of third type through portions included in the exposed structure 500 is referred to as "N3C." The number of third type through portions included in the exposed structure 500 is referred to as "N3D." N3 is the sum of N3A, N3B, N3C, and N3D.

[0333] Examples of the configuration of the exposure structure 500 based on the number of through-portions P100 include a first configuration and a second configuration. In the first configuration, the exposure structure 500 includes one through-portion P100. In the second configuration, the exposure structure 500 includes multiple through-portions P100.

[0334] The configuration of the first form of exposure structure 500 will be illustrated. In the first example, N1 is 1. N2 is 0. N3 is 0. In the second example, N1 is 0. N2 is 1. N3 is 0. In the third example, N1 is 0. N2 is 0. N3 is 1.

[0335] The configuration of the second form of exposure structure 500 will be illustrated below. In a first example, N1 is 2 or more. N2 is 0. N3 is 0. In a second example, N1 is 2 or more. N2 is 1. N3 is 0. In a third example, N1 is 2 or more. N2 is 0. N3 is 1. In a fourth example, N1 is 2 or more. N2 is 2 or more. N3 is 0.

[0336] In the fifth example, N1 is 2 or greater. N2 is 0 or greater. N3 is 2 or greater. In the sixth example, N1 is 2 or greater. N2 is 1. N3 is 1. In the seventh example, N1 is 2 or greater. N2 is 2 or greater. N3 is 1. In the eighth example, N1 is 2 or greater. N2 is 1. N3 is 2 or greater.

[0337] In the ninth example, N1 is 2 or greater. N2 is 2 or greater. N3 is 2 or greater. In the tenth example, N1 is 0. N2 is 2 or greater. N3 is 0. In the eleventh example, N1 is 1. N2 is 2 or greater. N3 is 0. In the twelfth example, N1 is 0. N2 is 2 or greater. N3 is 1.

[0338] In the 13th example, N1 is 0. N2 is 2 or more. N3 is 2 or more. In the 14th example, N1 is 1. N2 is 2 or more. N3 is 1. In the 15th example, N1 is 1. N2 is 2 or more. N3 is 2 or more. In the 16th example, N1 is 0. N2 is 0. N3 is 2 or more.

[0339] In the 17th example, N1 is 1. N2 is 0. N3 is 2 or more. In the 18th example, N1 is 0. N2 is 1. N3 is 2 or more. In the 19th example, N1 is 1. N2 is 1. N3 is 2 or more. In the 20th example, N1 is 1. N2 is 2 or more. N3 is 2 or more.

[0340] In the second form of exposure structure 500, the multiple through-holes P100 are classified into, for example, a first group, a second group, and a third group. The configuration of the exposure structure 500 based on the first to third groups will be illustrated. In the first example, the exposure structure 500 includes any one of the first to third groups. In the second example, the exposure structure 500 includes any two of the first to third groups. In the third example, the exposure structure 500 includes all of the first to third groups.

[0341] Each group includes one or more penetration portions P100. The first group includes one or more first-type penetration portions P100X1. The second group includes one or more second-type penetration portions P100X2. The third group includes one or more third-type penetration portions P100X3.

[0342] The number of first-type through portions P100X1 included in the first group is referred to as "NG1." The number of second-type through portions P100X2 included in the second group is referred to as "NG2." The number of third-type through portions P100X3 included in the third group is referred to as "NG3."

[0343] The relationship between the number of penetrations P100 included in each group will be illustrated below. In the first example, NG1, NG2, and NG3 are equal. In the second example, NG1 and NG2 are different from NG3. Examples 21 to 24 are examples of the second example in detail. In the 21st example, NG1 and NG2 are greater than NG3. In the 22nd example, assuming the 21st example, NG1 and NG2 are equal. In the 23rd example, assuming the 21st example, NG1 is greater than NG2. In the 24th example, assuming the 21st example, NG1 is less than NG2.

[0344] In the third example, NG1 and NG3 are different from NG2. Examples 31 to 34 are examples of the third example in more detail. In the third example, NG1 and NG3 are greater than NG2. In the third example, assuming the third example, NG1 and NG3 are equal. In the third example, assuming the third example, NG1 is greater than NG3. In the third example, assuming the third example, NG1 is less than NG3.

[0345] In Example 4, NG2 and NG3 are different from NG1. Examples 41 to 44 are examples of the fourth example. In Example 41, NG2 and NG3 are greater than NG1. In Example 42, assuming Example 41, NG2 and NG3 are equal. In Example 43, assuming Example 41, NG2 is greater than NG3. In Example 44, assuming Example 41, NG2 is less than NG3.

[0346] The first type through portion P100X1 of the first group and the third type through portion P100X3 of the third group are provided with an interval in the axial direction. The second type through portion P100X2 of the second group and the third type through portion P100X3 of the third group are provided with an interval in the axial direction.

[0347] The following describes an example of the configuration of the first group when NG1 is 2 or more. In the first example, the multiple first-kind through parts P100X1 are arranged at intervals in a first predetermined direction. The first predetermined direction is, for example, the axial direction or the circumferential direction.

[0348] In the second example, the multiple first-type through parts P100X1 are arranged at intervals in both the first and second predetermined directions. The first predetermined direction is, for example, one of the axial direction and the circumferential direction. The second predetermined direction is, for example, the other of the axial direction and the circumferential direction.

[0349] The interval between the first kind through portions P100X1 adjacent to each other in the first predetermined direction in the first group is illustrated below: In the first example, the interval between the first kind through portions P100X1 adjacent to each other in the first predetermined direction is narrower than the length of the first kind through portions P100X1 in the first predetermined direction.

[0350] In the second example, the interval between adjacent first-kind through portions P100X1 in the first predetermined direction is wider than the length of the first-kind through portions P100X1 in the first predetermined direction. In the third example, the interval between adjacent first-kind through portions P100X1 in the first predetermined direction is equal to the length of the through portion P100 in the first predetermined direction.

[0351] The interval between the first kind through portions P100X1 adjacent to each other in the second predetermined direction in the first group is illustrated below: In the first example, the interval between the first kind through portions P100X1 adjacent to each other in the second predetermined direction is narrower than the length of the first kind through portions P100X1 in the second predetermined direction.

[0352] In a second example, the interval between adjacent first-type through portions P100X1 in the second predetermined direction is wider than the length of the first-type through portions P100X1 in the second predetermined direction. In a third example, the interval between adjacent first-type through portions P100X1 in the second predetermined direction is equal to the length of the first-type through portions P100X1 in the second predetermined direction.

[0353] The following describes an example of the configuration of the second group when NG2 is 2 or more. In a first example, the multiple second-type through portions P100X2 are arranged at intervals in a first predetermined direction. The first predetermined direction is, for example, the axial direction or the circumferential direction.

[0354] In the second example, the plurality of second-type through-portions P100X2 are arranged at intervals in both the first and second predetermined directions. The first predetermined direction is, for example, one of the axial direction and the circumferential direction. The second predetermined direction is, for example, the other of the axial direction and the circumferential direction.

[0355] The interval between the second type through portions P100X2 adjacent to each other in the first predetermined direction in the second group will be illustrated below. In a first example, the interval between the second type through portions P100X2 adjacent to each other in the first predetermined direction is narrower than the length of the second type through portions P100X2 in the first predetermined direction.

[0356] In the second example, the interval between adjacent second-type through portions P100X2 in the first predetermined direction is wider than the length of the second-type through portions P100X2 in the first predetermined direction. In the third example, the interval between adjacent second-type through portions P100X2 in the first predetermined direction is equal to the length of the through portion P100 in the first predetermined direction.

[0357] The interval between the second type through portions P100X2 adjacent to each other in the second predetermined direction in the first group is illustrated below: In the first example, the interval between the second type through portions P100X2 adjacent to each other in the second predetermined direction is narrower than the length of the second type through portions P100X2 in the second predetermined direction.

[0358] In the second example, the interval between adjacent second-type through portions P100X2 in the second predetermined direction is wider than the length of the second-type through portions P100X2 in the second predetermined direction. In the third example, the interval between adjacent second-type through portions P100X2 in the second predetermined direction is equal to the length of the second-type through portions P100X2 in the second predetermined direction.

[0359] The following describes an example of the configuration of the third group when NG3 is 2 or more. In a first example, the multiple third-type through holes P100X3 are arranged at intervals in a first predetermined direction. The first predetermined direction is, for example, the axial direction or the circumferential direction.

[0360] In the second example, the plurality of third-type through-portions P100X3 are arranged at intervals in both the first and second predetermined directions. The first predetermined direction is, for example, one of the axial direction and the circumferential direction. The second predetermined direction is, for example, the other of the axial direction and the circumferential direction.

[0361] The interval between the third type through portions P100X3 adjacent to each other in the first predetermined direction in the third group will be illustrated below. In a first example, the interval between the third type through portions P100X3 adjacent to each other in the first predetermined direction is narrower than the length of the third type through portions P100X3 in the first predetermined direction.

[0362] In the second example, the interval between adjacent third-type through portions P100X3 in the first predetermined direction is wider than the length of the third-type through portions P100X3 in the first predetermined direction. In the third example, the interval between adjacent third-type through portions P100X3 in the first predetermined direction is equal to the length of the through portions P100 in the first predetermined direction.

[0363] The interval between the third type through portions P100X3 adjacent to each other in the second predetermined direction in the third group will be illustrated below. In a first example, the interval between the third type through portions P100X3 adjacent to each other in the second predetermined direction is narrower than the length of the third type through portions P100X3 in the second predetermined direction.

[0364] In the second example, the interval between adjacent third-type through portions P100X3 in the second predetermined direction is wider than the length of the third-type through portions P100X3 in the second predetermined direction. In the third example, the interval between adjacent third-type through portions P100X3 in the second predetermined direction is equal to the length of the third-type through portions P100X3 in the second predetermined direction.

[0365] In one example, the secondary molded portion Q includes one or more partitions Q110. The partitions Q110 are provided between adjacent through-portions P100 in the first predetermined direction or the second predetermined direction. The partitions Q110 are joined to the adjacent through-portions P100.

[0366] Please refer to Figures 25 to 36. In one example, the part to be coated PC includes a primary handle component P10.

[0367] The configuration of the first end PCA of the part to be coated PC will be illustrated. In a first example, the first end PCA of the part to be coated PC includes the first end P10A of the primary handle component P10. In a second example, the first end PCA of the part to be coated PC includes the first end P10A of the primary handle component P10 and the first end P20A of the constricted part P20.

[0368] The configuration of the second end PCB of the part to be coated PC will be illustrated below. In a first example, the second end PCB of the part to be coated PC includes the second end P10B of the primary handle component P10. In a second example, the second end PCB of the part to be coated PC includes the second end P10B of the primary handle component P10 and the second end P20B of the constricted part P20.

[0369] The configuration of the middle part PCC of the part to be coated PC will be illustrated. In a first example, the middle part PCC of the part to be coated PC includes a middle part P20C of the constricted part P20, a first end part P20A, and a second end part P20B. In a second example, the middle part PCC of the part to be coated PC includes the middle part P20C of the constricted part P20.

[0370] The exposure structure 500 includes a plurality of penetration portions P100 and a plurality of penetration arrangement portions Q100. The plurality of penetration portions P100 are classified into a first group, a second group, and a third group. The first group includes three penetration portions P100. The second group includes three penetration portions P100. The third group includes one penetration portion P100.

[0371] The gate-related portion of the secondary formed portion Q includes a gate mark or a gate corresponding portion. The position of the gate-related portion in the circumferential direction is set on the back surface of the secondary formed portion Q. The back surface of the secondary formed portion Q corresponds to the gate corresponding surface. The front surface of the secondary formed portion Q corresponds to the opposite surface. The first side surface of the secondary formed portion Q corresponds to the first intermediate surface. The second side surface of the secondary formed portion Q corresponds to the second intermediate surface. The position of the gate-related portion in the axial direction is set to the intermediate portion Q20C of the constricted portion Q20.

[0372] Please refer to Figures 25 to 28. In the illustrated example, the first end portion PCA of the coated part PC includes a first end portion P10A of the primary handle component P10 and a first end portion P20A of the constricted portion P20.

[0373] The type of the through portions P100 of the first group is Type 1A. The through portions P100 of the first group are arranged at intervals in the axial direction. A partition portion Q110 of the secondary molded portion Q is provided between the through portions P100 adjacent in the axial direction.

[0374] The first group of through-holes P100 are configured to extend in the circumferential direction. The peripheral end P120 of the first group of through-holes P100 is located in front of the part to be coated PC. The peripheral length of the through-hole is longer than the axial length of the through-hole. The top surface P111 of the first group of through-holes P100 is a curved surface. The center of the curved surface is determined in the radially inward direction of the molded product 20.

[0375] The first group of through holes P100 and the covering portion Q40 located around them form a depressed structure 501. Part or all of the top surface P111 of the through holes P100 is exposed to the covering portion Q40. The side surface P112 of the through holes P100 is covered by the covering portion Q40. The exposed surface P101 is made up of part or all of the top surface P111.

[0376] The height of the step formed between the exposed surface P101 of the penetrating portion P100 and the outer surface QF of the covering portion Q40 is determined based on, for example, one or more predetermined factors related to the toothbrush 10A. Examples of predetermined factors related to the toothbrush 10A include the operability of the toothbrush 10A when using it and the design of the molded product 20.

[0377] Please refer to Figures 29 to 32. In the illustrated example, the second end PCB of the coated part PC includes the second end P10B of the primary handle component P10 and the second end P20B of the constricted part P20.

[0378] The type of the through portions P100 of the second group is Type 2A. The through portions P100 of the second group are arranged at intervals in the axial direction. A partition portion Q110 of the secondary molded portion Q is provided between the through portions P100 adjacent to each other in the axial direction.

[0379] The second group of through-holes P100 are configured to extend in the circumferential direction. The peripheral end P120 of the second group of through-holes P100 is located in front of the portion to be coated PC. The peripheral length of the through-hole is longer than the axial length of the through-hole. The top surface P111 of the second group of through-holes P100 is curved. The center of the curved surface is determined in the radially inward direction of the molded product 20.

[0380] The second group of through-holes P100 and the covering portion Q40 located around them form a smooth structure 502. Part or all of the top surface P111 of the through-holes P100 is exposed to the covering portion Q40. The side surface P112 of the through-holes P100 is covered by the covering portion Q40. The exposed surface P101 is formed by part or all of the top surface P111.

[0381] The height of the step formed between the exposed surface P101 of the penetrating portion P100 and the outer surface QF of the covering portion Q40 is determined based on, for example, one or more predetermined factors related to the toothbrush 10A. Examples of predetermined factors related to the toothbrush 10A include the operability of the toothbrush 10A when using it and the design of the molded product 20.

[0382] Please refer to Figures 33 to 36. In the illustrated example, the middle portion PCC of the portion to be covered PC includes the middle portion P20C of the constricted portion P20.

[0383] The type of the penetrating portion P100 of the third group is Type 3A. The middle portion P100C of the penetrating portion P100 is cylindrical. The axial end P130 of the penetrating portion P100 is located in front of the portion to be coated PC. The peripheral end P120 of the penetrating portion P100 is located in front of the portion to be coated PC. The top surface P111 of the penetrating portion P100 is curved. The center of the curved surface is determined in the radially inward direction of the molded product 20.

[0384] The third group of through-holes P100 and the covering portion Q40 located around them form a smooth structure 502. Part or all of the top surface P111 of the through-holes P100 is exposed to the covering portion Q40. The side surface P112 of the through-holes P100 is covered by the covering portion Q40. The exposed surface P101 is formed by part or all of the top surface P111.

[0385] See FIG. 1. The distance between the specific position of second end 110B of main body 100 and the specific position of the first group in the axial direction is referred to as the "specific distance." The specific distance is determined, for example, based on one or more predetermined factors related to toothbrush 10A. Examples of predetermined factors related to toothbrush 10A include operability when using toothbrush 10A and the design of molded product 20.

[0386] For example, the end of the second end 110B in the second axial direction is selected as the specific position of the second end 110B. For example, the center of the first group in the axial direction is selected as the specific position of the first group. For example, the center of the first group is selected as the center between the first axial end P131 located at the end of the first group in the first axial direction and the second axial end P132 located at the end of the first group in the second axial direction.

[0387] In one example, the specific distance is set in consideration of the operability when using toothbrush 10A. One example of an issue related to operability is the ease of gripping handle 110. The specific distance is determined based on its relationship with the hand width (hereinafter referred to as the "reference hand width") set as a model.

[0388] In one example, the specific distance is a value obtained by multiplying the reference hand width by a predetermined coefficient. The predetermined coefficient is selected, for example, from a range of 1 to 1.7. When the hand of a Japanese adult is set as the model hand, the reference hand width is selected, for example, from a range of 70 mm to 80 mm.

[0389] See Figure 3. In a front view of the molded article 20, a line that passes through the center of the handle 110 in the axial direction and is parallel to the width direction is referred to as the "handle reference line." In a front view of the molded article 20, a line that passes through the center of the neck 120 in the axial direction and is parallel to the width direction is referred to as the "neck reference line."

[0390] A straight line that passes through the center of the head 130 in the axial direction and is parallel to the width direction when viewed from the front of the molded article 20 is referred to as the "head reference line." A straight line that passes through the center of the protrusion 220 in the axial direction and is parallel to the width direction when viewed from the front of the molded article 20 is referred to as the "protrusion reference line."

[0391] 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.

[0392] 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.

[0393] 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."

[0394] 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.

[0395] 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."

[0396] 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.

[0397] The first connection portion JA of the first embodiment is configured, for example, as follows.

[0398] 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.

[0399] 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.

[0400] 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.

[0401] 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.

[0402] The first connecting portion JA of the second embodiment is configured, for example, as follows.

[0403] 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.

[0404] 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.

[0405] 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.

[0406] 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.

[0407] The first connecting portion JA of the third embodiment is configured, for example, as follows.

[0408] 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.

[0409] 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.

[0410] 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.

[0411] 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.

[0412] The first connecting portion JA of the fourth embodiment is configured, for example, as follows.

[0413] 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.

[0414] 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.

[0415] 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.

[0416] 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.

[0417] The first connecting portion JA of the fifth embodiment is configured, for example, as follows.

[0418] 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.

[0419] 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.

[0420] 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.

[0421] 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.

[0422] The first connecting portion JA of the sixth embodiment is configured, for example, as follows.

[0423] 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.

[0424] 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.

[0425] 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.

[0426] 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.

[0427] The first connecting portion JA of the seventh embodiment is configured, for example, as follows.

[0428] 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.

[0429] 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 PF of the head 130 and the shape of the outer surface PF 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.

[0430] The configuration regarding the width of the first connecting portion JA of the seventh embodiment will be illustrated.

[0431] 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.

[0432] 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.

[0433] 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.

[0434] 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.

[0435] 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.

[0436] 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.

[0437] 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.

[0438] 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.

[0439] 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.

[0440] 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."

[0441] 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.

[0442] 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."

[0443] 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.

[0444] The second connection portion JB of the first embodiment is configured, for example, as follows.

[0445] 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.

[0446] 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.

[0447] 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.

[0448] 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.

[0449] The second connection portion JB of the second embodiment is configured, for example, as follows.

[0450] 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.

[0451] 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.

[0452] 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.

[0453] 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.

[0454] The second connection portion JB of the third embodiment is configured, for example, as follows.

[0455] 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.

[0456] 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.

[0457] 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.

[0458] 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.

[0459] The second connection portion JB of the fourth embodiment is configured, for example, as follows.

[0460] 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.

[0461] 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.

[0462] 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.

[0463] 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.

[0464] The second connecting portion JB of the fifth embodiment is configured, for example, as follows.

[0465] 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.

[0466] 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.

[0467] 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.

[0468] 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.

[0469] The second connecting portion JB of the sixth embodiment is configured, for example, as follows.

[0470] 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.

[0471] 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.

[0472] 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.

[0473] 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.

[0474] The second connecting portion JB of the seventh embodiment is configured, for example, as follows.

[0475] 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.

[0476] The following are examples of characteristic structural changes. 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 PF of the neck 120 and the shape of the outer surface PF 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.

[0477] The configuration regarding the width of the second connecting portion JB of the seventh embodiment will be illustrated.

[0478] 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.

[0479] 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.

[0480] 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.

[0481] 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.

[0482] 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.

[0483] 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.

[0484] 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.

[0485] 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.

[0486] 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.

[0487] 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."

[0488] 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.

[0489] 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."

[0490] 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.

[0491] The third connection portion JC of the first embodiment is configured, for example, as follows.

[0492] 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.

[0493] Within 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.

[0494] 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.

[0495] 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.

[0496] The third connection portion JC of the second embodiment is configured, for example, as follows.

[0497] 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.

[0498] 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.

[0499] 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.

[0500] 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.

[0501] The third connection portion JC of the third embodiment is configured, for example, as follows.

[0502] 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.

[0503] 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.

[0504] 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.

[0505] 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.

[0506] The third connection portion JC of the fourth embodiment is configured, for example, as follows.

[0507] 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.

[0508] 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.

[0509] 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.

[0510] 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.

[0511] The third connection portion JC of the fifth embodiment is configured, for example, as follows.

[0512] 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.

[0513] 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.

[0514] 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.

[0515] 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.

[0516] The third connection portion JC of the sixth embodiment is configured, for example, as follows.

[0517] 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.

[0518] 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.

[0519] 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.

[0520] 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.

[0521] The third connection portion JC of the seventh embodiment is configured, for example, as follows.

[0522] 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.

[0523] The following are examples of characteristic structural changes. 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 PF of the handle 110 and the shape of the outer surface PF 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.

[0524] The configuration regarding the width of the third connection portion JC of the seventh embodiment will be illustrated.

[0525] 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.

[0526] 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.

[0527] 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.

[0528] 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.

[0529] 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.

[0530] 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.

[0531] 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.

[0532] 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.

[0533] 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."

[0534] 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%.

[0535] 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%.

[0536] 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.

[0537] 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.”

[0538] 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%.

[0539] 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%.

[0540] 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.

[0541] 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.”

[0542] 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%.

[0543] 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.

[0544] 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.

[0545] 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.

[0546] 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.

[0547] 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.

[0548] 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.

[0549] 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.

[0550] 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.

[0551] 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 .

[0552] 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.

[0553] Examples of the movement of the secondary molding part Q relative to the primary molding part P include the movement of the secondary molding part Q relative to the primary molding part P and the rotation of the secondary molding part Q relative to the primary molding part P. The movement of the secondary molding part Q relative to the primary molding part P is referred to as the "relative movement of the secondary molding part Q." The rotation of the secondary molding part Q relative to the primary molding part P is referred to as the "relative rotation of the secondary molding part Q."

[0554] Examples of the relative movement of the secondary molding portion Q include a first type relative movement, a second type relative movement, and a third type relative movement.

[0555] The first type relative movement is movement of the secondary molding part Q relative to the primary molding part P in a direction that includes at least an axial component.

[0556] The second type relative movement is movement of the secondary molding part Q relative to the primary molding part P in a direction that includes at least a component in the width direction.

[0557] The third type relative movement is movement of the secondary molding part Q relative to the primary molding part P in a direction that includes at least a component in the thickness direction.

[0558] Examples of the relative rotation of the secondary molded portion Q include a first type relative rotation and a second type relative rotation.

[0559] The first kind of relative rotation is a rotation of the secondary forming portion Q relative to the primary forming portion P in a direction including at least a component in the first circumferential direction.

[0560] The second kind of relative rotation is a rotation of the secondary forming portion Q relative to the primary forming portion P in a direction that includes at least a component in the second circumferential direction.

[0561] 7 and 8. The molded product 20 includes a restricting structure R. The configuration of the restricting structure R can be selected arbitrarily. The configuration of the restricting structure R is not limited to the exemplified configuration. The restricting structure R is configured to restrict the movement of the secondary molded portion Q relative to the primary molded portion P. In one example, the restricting structure R is configured to restrict at least one of the relative movement of the secondary molded portion Q and the relative rotation of the secondary molded portion Q.

[0562] The restricting structure R may include, for example, one or more types of specific restricting structures. Each specific restricting structure may include a different structure. Each specific restricting structure may be configured to restrict at least one of the relative movement of the secondary molded portion Q and the relative rotation of the secondary molded portion Q.

[0563] The inherent restriction structure is provided in the primary molded portion P or the secondary molded portion Q. Examples of the inherent restriction structure provided in the primary molded portion P include a step portion R10, a diameter changing portion R20, a surface undulation portion R30, a protrusion R40, a placement portion R50 (see FIG. 37, etc.), and an undercut portion R60 (see FIG. 46, etc.). An example of the inherent restriction structure provided in the secondary molded portion Q is a circumferential portion RQ.

[0564] In one example, the covering portion Q40 is configured to cover the regulating structure R. The covering portion Q40 covers one or more of a plurality of types of unique regulating structures.

[0565] In the illustrated example, the restricting structure R includes a plurality of types of unique restricting structures, including a step portion R10, a diameter changing portion R20, a surface undulation portion R30, a protrusion R40, and a circumferential portion RQ.

[0566] The configuration of the step portion R10 can be selected arbitrarily. The configuration of the step portion R10 is not limited to the exemplified configuration. The step portion R10 is configured to restrict at least one of the relative movement of the secondary molded portion Q and the relative rotation of the secondary molded portion Q.

[0567] The step R10 is provided in the primary molded portion P. The step R10 includes an intermediate surface. The intermediate surface is a surface provided between the upper part of the step R10 and the lower part of the step R10. The secondary molded portion Q includes an end surface facing the intermediate surface of the step R10 of the primary molded portion P. The end surface of the secondary molded portion Q is provided at the end of the secondary molded portion Q. In an example where a step is provided in the secondary molded portion Q, the step of the secondary molded portion Q includes an end surface. Examples of the configuration of the step R10 include first to seventh examples.

[0568] In a first example, the step portion R10 is configured to restrict a first type of relative movement. In a second example, the step portion R10 is configured to restrict a second type of relative movement. In a third example, the step portion R10 is configured to restrict a third type of relative movement. In a fourth example, the step portion R10 is configured to include at least two of the configurations of the first to third examples.

[0569] In a fifth example, the step portion R10 is configured to restrict a first type of relative rotation. In a sixth example, the step portion R10 is configured to restrict a second type of relative rotation. In a seventh example, the step portion R10 is configured to include both the configurations of the fifth and sixth examples.

[0570] In the illustrated example, the restricting structure R includes one step portion R10. The step portion P11 of the primary molding portion P corresponds to the step portion R10 of the restricting structure R. The covering portion Q40 covers the middle surface of the step portion R10 and the lower portion of the step portion R10.

[0571] The configuration of the diameter changing portion R20 can be selected arbitrarily. The configuration of the diameter changing portion R20 is not limited to the configuration exemplified. The diameter changing portion R20 is configured to restrict the first relative movement.

[0572] The diameter changing portion R20 is provided in the primary molded portion P. The diameter changing portion R20 is configured so that the outer diameter changes in the axial direction. Examples of the diameter changing portion R20 include a first example and a second example.

[0573] In the first example, the diameter changing portion R20 is configured to restrict the relative movement in the first axial direction among the first-type relative movements. In the diameter changing portion R20, the outer diameter of the primary molded portion P increases in the first axial direction.

[0574] In the second example, the diameter changing portion R20 is configured to restrict the relative movement in the second axial direction among the first type relative movements. In the diameter changing portion R20, the outer diameter of the primary molded portion P increases in the second axial direction.

[0575] The restricting structure R includes one or more diameter changing portions R20. Examples of the diameter changing portion R20 include a first diameter changing portion R21, a second diameter changing portion R22, a third diameter changing portion R23, and a fourth diameter changing portion R24.

[0576] The first diameter changing portion R21 is configured to restrict relative movement of the secondary molded portion Q in the first axial direction or the second axial direction. The first diameter changing portion R21 is located in the first axial direction relative to the other diameter changing portions R20. In one example, the first diameter changing portion R21 is provided in the primary handle component P10, the neck 120, or the head 130.

[0577] The second diameter changing portion R22 is configured to restrict relative movement of the secondary molded portion Q in the first axial direction or the second axial direction. The second diameter changing portion R22 is located in the second axial direction with respect to the first diameter changing portion R21. In one example, the second diameter changing portion R22 is provided in the primary handle component P10, the neck 120, or the head 130.

[0578] The third diameter changing portion R23 is configured to restrict relative movement of the secondary molded portion Q in the first axial direction or the second axial direction. The third diameter changing portion R23 is located in the second axial direction with respect to the second diameter changing portion R22. In one example, the third diameter changing portion R23 is provided in the primary handle component P10, the neck 120, or the head 130.

[0579] The fourth diameter changing portion R24 is configured to restrict relative movement of the secondary molded portion Q in the first axial direction or the second axial direction. The fourth diameter changing portion R24 is located in the second axial direction with respect to the second diameter changing portion R22. In one example, the fourth diameter changing portion R24 is provided in the primary handle component P10, the neck 120, or the head 130.

[0580] The direction of the relative movement of the secondary molded portion Q restricted by the diameter changing portion R20 is referred to as the "restriction direction."

[0581] An example will be given of the relationship between the restricting directions of the respective diameter changing portions R20 in a configuration in which the restricting structure R includes a first diameter changing portion R21 and a second diameter changing portion R22.

[0582] In the first example, the restricting direction in the first diameter changing portion R21 is the first axial direction or the second axial direction, and the restricting direction in the second diameter changing portion R22 is the same direction as the restricting direction of the first diameter changing portion R21.

[0583] In the second example, the restricting direction in the first diameter changing portion R21 is the first axial direction or the second axial direction, and the restricting direction in the second diameter changing portion R22 is the opposite direction to the restricting direction of the first diameter changing portion R21.

[0584] The relationship between the restricting directions of the diameter changing portions R20 in a configuration in which the restricting structure R includes a first diameter changing portion R21, a second diameter changing portion R22, and a third diameter changing portion R23 will be illustrated.

[0585] In the first example, the restricting direction in the first diameter changing portion R21 is the first axial direction or the second axial direction. The restricting direction in the second diameter changing portion R22 is the same direction as the restricting direction of the first diameter changing portion R21. The restricting direction in the third diameter changing portion R23 is the same direction as the restricting direction of the first diameter changing portion R21.

[0586] In the second example, the restricting direction in the first diameter changing portion R21 is the first axial direction or the second axial direction. The restricting direction in the second diameter changing portion R22 is the opposite direction to the restricting direction in the first diameter changing portion R21. The restricting direction in the third diameter changing portion R23 is the same direction as the restricting direction in the first diameter changing portion R21.

[0587] In the third example, the restricting direction in the first diameter changing portion R21 is the first axial direction or the second axial direction. The restricting direction in the second diameter changing portion R22 is the opposite direction to the restricting direction of the first diameter changing portion R21. The restricting direction in the third diameter changing portion R23 is the opposite direction to the restricting direction of the first diameter changing portion R21.

[0588] In the fourth example, the restricting direction in the first diameter changing portion R21 is the first axial direction or the second axial direction. The restricting direction in the second diameter changing portion R22 is the same as the restricting direction in the first diameter changing portion R21. The restricting direction in the third diameter changing portion R23 is the opposite direction to the restricting direction in the first diameter changing portion R21.

[0589] The relationship between the restricting directions of the diameter changing portions R20 in a configuration in which the restricting structure R includes a first diameter changing portion R21, a second diameter changing portion R22, a third diameter changing portion R23, and a fourth diameter changing portion R24 will be illustrated.

[0590] In the first example, the restricting direction in the first diameter changing portion R21 is the first axial direction or the second axial direction. The restricting direction in the second diameter changing portion R22 is the same direction as the restricting direction of the first diameter changing portion R21. The restricting direction in the third diameter changing portion R23 is the same direction as the restricting direction of the first diameter changing portion R21. The restricting direction in the fourth diameter changing portion R24 is the same direction as the restricting direction of the first diameter changing portion R21.

[0591] In the second example, the restricting direction in the first diameter changing portion R21 is the first axial direction or the second axial direction. The restricting direction in the second diameter changing portion R22 is the opposite direction to the restricting direction of the first diameter changing portion R21. The restricting direction in the third diameter changing portion R23 is the same direction as the restricting direction of the first diameter changing portion R21. The restricting direction in the fourth diameter changing portion R24 is the same direction as the restricting direction of the first diameter changing portion R21.

[0592] In the third example, the restricting direction in the first diameter changing portion R21 is the first axial direction or the second axial direction. The restricting direction in the second diameter changing portion R22 is the same direction as the restricting direction of the first diameter changing portion R21. The restricting direction in the third diameter changing portion R23 is the opposite direction to the restricting direction of the first diameter changing portion R21. The restricting direction in the fourth diameter changing portion R24 is the same direction as the restricting direction of the first diameter changing portion R21.

[0593] In the fourth example, the restricting direction in the first diameter changing portion R21 is the first axial direction or the second axial direction. The restricting direction in the second diameter changing portion R22 is the same direction as the restricting direction of the first diameter changing portion R21. The restricting direction in the third diameter changing portion R23 is the same direction as the restricting direction of the first diameter changing portion R21. The restricting direction in the fourth diameter changing portion R24 is the opposite direction to the restricting direction of the first diameter changing portion R21.

[0594] In the fifth example, the restricting direction in the first diameter changing portion R21 is the first axial direction or the second axial direction. The restricting direction in the second diameter changing portion R22 is the opposite direction to the restricting direction of the first diameter changing portion R21. The restricting direction in the third diameter changing portion R23 is the same direction as the restricting direction of the first diameter changing portion R21. The restricting direction in the fourth diameter changing portion R24 is the opposite direction to the restricting direction of the first diameter changing portion R21.

[0595] In the sixth example, the restricting direction in the first diameter changing portion R21 is the first axial direction or the second axial direction. The restricting direction in the second diameter changing portion R22 is the opposite direction to the restricting direction of the first diameter changing portion R21. The restricting direction in the third diameter changing portion R23 is the opposite direction to the restricting direction of the first diameter changing portion R21. The restricting direction in the fourth diameter changing portion R24 is the same direction as the restricting direction of the first diameter changing portion R21.

[0596] In the seventh example, the restricting direction in the first diameter changing portion R21 is the first axial direction or the second axial direction. The restricting direction in the second diameter changing portion R22 is the same direction as the restricting direction of the first diameter changing portion R21. The restricting direction in the third diameter changing portion R23 is the opposite direction to the restricting direction of the first diameter changing portion R21. The restricting direction in the fourth diameter changing portion R24 is the opposite direction to the restricting direction of the first diameter changing portion R21.

[0597] In the eighth example, the restricting direction in the first diameter changing portion R21 is the first axial direction or the second axial direction. The restricting direction in the second diameter changing portion R22 is the opposite direction to the restricting direction of the first diameter changing portion R21. The restricting direction in the third diameter changing portion R23 is the opposite direction to the restricting direction of the first diameter changing portion R21. The restricting direction in the fourth diameter changing portion R24 is the opposite direction to the restricting direction of the first diameter changing portion R21.

[0598] In the illustrated example, the restriction structure R includes a first diameter changing portion R21 to a fourth diameter changing portion R24. The covering portion Q40 covers the first diameter changing portion R21 to the fourth diameter changing portion R24.

[0599] The first end P20A and part of the intermediate portion P20C of the constricted portion P20 correspond to the first diameter changing portion R21. Part of the intermediate portion P20C is located in the first axial direction relative to the narrowest part of the constricted portion P20.

[0600] The second end P20B and part of the intermediate portion P20C of the constricted portion P20 correspond to the second diameter changing portion R22. The part of the intermediate portion P20C is located in the second axial direction relative to the narrowest part of the constricted portion P20.

[0601] The tapered portion P30 of the primary molded portion P corresponds to the third diameter changing portion R23. The main body protruding portion P40 of the primary molded portion P corresponds to the fourth diameter changing portion R24.

[0602] The configuration of the surface undulations R30 can be selected arbitrarily. The configuration of the surface undulations R30 is not limited to the exemplified configuration. The surface undulations R30 is configured to restrict the relative movement and relative rotation of the secondary molded portion Q.

[0603] The surface undulations R30 are provided on the primary molded part P. The surface undulations R30 are configured to give the outer surface PF of the primary molded part P unevenness.

[0604] In the illustrated example, the regulating structure R includes one surface undulation portion R30. The surface undulation portion 410 of the primary molding portion P corresponds to the surface undulation portion R30 of the regulating structure R. One surface undulation portion 410 is composed of a group of multiple geometrically shaped surfaces 420 that are adjacent to each other and share sides or vertices. The covering portion Q40 covers the surface undulation portion R30.

[0605] The configuration of the protrusion R40 can be selected arbitrarily. The configuration of the protrusion R40 is not limited to the exemplified configuration. The protrusion R40 is configured to restrict the relative movement and relative rotation of the secondary molded portion Q.

[0606] The protrusion R40 is provided on the primary molded portion P. The protrusion R40 is configured to protrude from the outer surface PF of the primary molded portion P in a direction intersecting the central axis of the primary molded portion P.

[0607] Examples of the form in which the restricting structure R includes a plurality of protrusions R40 include Example A and Example B. In Example A, the plurality of protrusions R40 are arranged regularly. In Example B, the plurality of protrusions R40 are arranged irregularly. As details of Example A, for example, Examples A1 to A11 can be mentioned.

[0608] In example A1, the regulating structure R includes a group of a plurality of axially aligned protrusions R40. In example A2, the regulating structure R includes a plurality of the groups of example A1.

[0609] In Example A3, the regulating structure R includes a group of a plurality of protrusions R40 aligned in the width direction. In Example A4, the regulating structure R includes a plurality of the groups of Example A3.

[0610] In Example A5, the regulating structure R includes a group of a plurality of protrusions R40 aligned in the thickness direction. In Example A6, the regulating structure R includes a plurality of the groups of Example A5.

[0611] In Example A7, the restricting structure R includes a group of a plurality of protrusions R40 aligned in the circumferential direction. In Example A8, the restricting structure R includes a plurality of the groups of Example A7.

[0612] In Example A9, the regulating structure R includes a group of multiple protrusions R40 aligned in a direction different from that of Examples A1 to A8. In Example A10, the regulating structure R includes a plurality of the groups of Example A9.

[0613] In Example A11, the regulating structure R includes at least two of the configurations of Examples A1 to A10. In Example A12, the regulating structure R includes at least one of the configurations of Examples A1 to A11 and the configuration of Example B.

[0614] In the illustrated example, the restricting structure R includes a plurality of protruding portions R40. The protruding portion P13 of the primary molding portion P corresponds to the protruding portion R40 of the restricting structure R. The covering portion Q40 covers the plurality of protruding portions R40.

[0615] The configuration of the circulating portion RQ can be selected arbitrarily. The configuration of the circulating portion RQ is not limited to the exemplified configuration. The circulating portion RQ is configured to restrict the relative movement and relative rotation of the secondary forming portion Q.

[0616] The circumferential portion RQ is provided on the secondary molded portion Q. The circumferential portion RQ is configured to extend in the circumferential direction. The circumferential portion RQ restricts the relative movement and relative rotation of the secondary molded portion Q by increasing the joining area between the primary molded portion P and the secondary molded portion Q in the circumferential direction.

[0617] In one example, the circumferential portion RQ is configured so that the outer surface PF of the primary molded portion P located around the circumferential portion RQ is continuous with the outer surface QF of the circumferential portion RQ. A portion of the outer surface 20F of the molded product 20, which is configured by the outer surface QF of the circumferential portion RQ and the outer surface PF of the primary molded portion P located around the circumferential portion RQ, is a smooth surface.

[0618] Examples of the circumferential portion RQ include Example A and Example B. In Example A, the circumferential portion RQ is configured to make one turn around the primary molded portion P. Figure 37 shows an example of Example A. In Example B, the length of the circumferential portion RQ in the circumferential direction is shorter than one turn around the primary molded portion P. Figure 40 shows an example of Example B. The circumferential portion RQ of Example B includes a first circumferential end portion Q41 and a second circumferential end portion Q42 in the circumferential direction.

[0619] In one example, the first circumferential end Q41 is configured so that the outer surface PF of the primary molded portion P located around the first circumferential end Q41 is continuous with the outer surface QF of the first circumferential end Q41. A portion of the outer surface 20F of the molded product 20, which is configured by the outer surface QF of the first circumferential end Q41 and the outer surface PF of the primary molded portion P located around the first circumferential end Q41, is a smooth surface.

[0620] In one example, the second circumferential end Q42 is configured so that the outer surface PF of the primary molded part P located around the second circumferential end Q42 is continuous with the outer surface QF of the second circumferential end Q42. A portion of the outer surface 20F of the molded product 20, which is formed by the outer surface QF of the second circumferential end Q42 and the outer surface PF of the primary molded part P located around the second circumferential end Q42, is a smooth surface.

[0621] In a cross section of the molded article 20 parallel to the third reference plane, the line segment connecting the central axis of the primary molded portion P and the portion of the first circumferential end Q41 closest to the central axis of the primary molded portion P is referred to as the "first line segment." In a cross section of the molded article 20 parallel to the third reference plane, the line segment connecting the central axis of the primary molded portion P and the portion of the second circumferential end Q42 closest to the central axis of the primary molded portion P is referred to as the "second line segment." In a cross section of the molded article 20 parallel to the third reference plane, the angle between the first line segment and the second line segment is referred to as the "orbital angle."

[0622] As a detailed example of Example B, the rotation angle is included in a predetermined range of rotation angles. Examples of the predetermined range are as follows: In a first example, the predetermined range is a range equal to or greater than the lower limit rotation angle; in a second example, the predetermined range is a range equal to or less than the upper limit rotation angle; and in a third example, the predetermined range is a range equal to or greater than the lower limit rotation angle and equal to or less than the upper limit rotation angle.

[0623] The lower limit rotation angle is selected from, for example, 5°, 10°, or 15°. The upper limit rotation angle is selected from, for example, 180°, 270°, or 355°. Examples of the predetermined range in the third example include the following examples 3A to 3I.

[0624] In Example 3A, the predetermined range is 5° to 180°. In Example 3B, the predetermined range is 5° to 270°. In Example 3C, the predetermined range is 5° to 355°.

[0625] In Example 3D, the predetermined range is 10° to 180°. In Example 3E, the predetermined range is 10° to 270°. In Example 3F, the predetermined range is 10° to 355°.

[0626] In Example 3G, the predetermined range is 15° to 180°. In Example 3H, the predetermined range is 15° to 270°. In Example 3I, the predetermined range is 15° to 355°.

[0627] In the illustrated example, the restricting structure R includes one circumferential portion RQ. The covering portion Q40 that goes around the primary handle component P10 corresponds to the circumferential portion RQ of the restricting structure R.

[0628] 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.

[0629] 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.

[0630] 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.

[0631] 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.

[0632] 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.

[0633] 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.

[0634] 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.

[0635] 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.

[0636] In step A2, the primary cavity is filled with a resin material corresponding to the primary molded portion P. The molten resin material flows through the primary cavity.

[0637] In step A3, the filled resin material is cooled and solidified. In the primary cavity, a primary molded part P shown in FIG. 7 is molded. A parting line is formed in the primary molded part P at a portion corresponding to the boundary between the movable mold and the fixed mold.

[0638] 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.

[0639] 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.

[0640] 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.

[0641] 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.

[0642] 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.

[0643] 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.

[0644] 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.

[0645] In step B2, the secondary cavity is filled with a resin material corresponding to the secondary molded portion Q. The molten resin material flows through the secondary cavity.

[0646] In step B3, the filled resin material is cooled and solidified. In the secondary cavity, a secondary molded portion Q is molded on the outer surface PF of the primary molded portion P. By molding the secondary molded portion Q, a molded product 20 shown in FIG. 3 is formed. A parting line is formed in the secondary molded portion Q at the portion corresponding to the boundary between the movable mold and the fixed mold.

[0647] 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.

[0648] 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.

[0649] 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.

[0650] 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.

[0651] (Effect 1) The configurations exemplified in the respective embodiments provide the following advantages, for example.

[0652] In the secondary molding process, the resin material corresponding to the secondary molded portion Q is supplied around the primary molded portion P. The force applied to the primary molded portion P from the resin material corresponding to the secondary molded portion Q may cause deformation in the coated portion PC of the primary molded portion P. The deformation of the primary molded portion P that occurs in the secondary molding process is called "deformation during secondary molding." The primary molded portion P that has undergone deformation during secondary molding is called "irregularly shaped primary molded portion P."

[0653] In terms of whether or not secondary molding deformation occurs, the state of the molded product 20 is classified into a state in which secondary molding deformation occurs and a state in which secondary molding deformation does not occur. Secondary molding deformation is classified, for example, into vertical deformation, horizontal deformation, and combined deformation based on the direction of deformation.

[0654] Longitudinal deformation is deformation in the thickness direction. Lateral deformation is deformation in the width direction. Combined deformation includes both longitudinal and lateral deformation. A deformed primary molded part P that has undergone longitudinal deformation includes a portion that is biased in the thickness direction relative to the undeformed primary molded part P. A deformed primary molded part P that has undergone lateral deformation includes a portion that is biased in the width direction relative to the undeformed primary molded part P.

[0655] The presence or absence of vertical or horizontal deformation of the primary molded portion P in the molded article 20 can be confirmed, for example, as follows: The shape of the primary molded portion P of the molded article 20 as viewed from the front is compared with the design shape of the primary molded portion P. Examples of methods for comparison include visual inspection or image analysis.

[0656] If the primary molded portion P of the molded product 20 contains a portion that is biased in the thickness direction relative to the designed primary molded portion P, the primary molded portion P is determined to correspond to an irregular primary molded portion P that has undergone vertical deformation.

[0657] If the primary molded portion P of the molded product 20 contains a portion that is biased in the width direction relative to the designed primary molded portion P, the primary molded portion P is determined to correspond to an irregularly shaped primary molded portion P that has undergone lateral deformation.

[0658] A state in which deformation occurs during secondary forming refers to a state in which longitudinal deformation, lateral deformation, or combined deformation occurs. A state in which deformation does not occur during secondary forming refers to a state in which longitudinal deformation, lateral deformation, or combined deformation does not occur.

[0659] The state in which deformation during secondary molding is suppressed refers to a state in which no longitudinal deformation, lateral deformation, or combined deformation occurs, or a state in which the degree of longitudinal deformation, lateral deformation, or combined deformation is small. The state in which the degree of longitudinal deformation, lateral deformation, or combined deformation is small refers to a state in which the amount of deformation of molded article 20 due to longitudinal deformation, lateral deformation, or combined deformation is small compared to a molded article 20 that does not include exposure structure 500 manufactured under the same conditions.

[0660] The state in which lateral deformation is suppressed refers to a state in which lateral deformation does not occur or a state in which the degree of lateral deformation is small. The state in which the degree of lateral deformation is small refers to a state in which the amount of deformation of the molded article 20 due to lateral deformation is small compared to a molded article 20 that does not include the exposed structure 500 produced under the same conditions.

[0661] The state in which vertical deformation is suppressed refers to a state in which vertical deformation does not occur or a state in which the degree of vertical deformation is small. The state in which the degree of vertical deformation is small refers to a state in which the amount of deformation of the molded article 20 due to vertical deformation is small compared to a molded article 20 that does not include the exposure structure 500 produced under the same conditions.

[0662] The state in which the composite deformation is suppressed refers to a state in which the composite deformation is not occurring or a state in which the degree of the composite deformation is small. The state in which the degree of the composite deformation is small refers to a state in which the amount of deformation of the molded article 20 due to the composite deformation is small compared to a molded article 20 that does not include the exposed structure 500 produced under the same conditions.

[0663] The state in which lateral deformation in the combined deformation is suppressed refers to a state in which the degree of lateral deformation in the combined deformation is small. The state in which the degree of lateral deformation in the combined deformation is small refers to a state in which the amount of deformation of the molded article 20 due to lateral deformation in the combined deformation is small compared to a molded article 20 that does not include the exposure structure 500 and is manufactured under the same conditions.

[0664] The state in which the longitudinal deformation in the combined deformation is suppressed refers to a state in which the degree of longitudinal deformation in the combined deformation is small. The state in which the degree of longitudinal deformation in the combined deformation is small refers to a state in which the deformation amount of the molded article 20 due to the longitudinal deformation in the combined deformation is small compared to a molded article 20 that does not include the exposure structure 500 manufactured under the same conditions.

[0665] In one example of the molded article 20, the molded article 20 includes a primary molded part P including the portion to be coated PC, a secondary molded part Q including a covering portion Q40 that covers the portion to be coated PC, and an exposure structure 500 including one or more through portions P100 that penetrate the covering portion Q40. The through portions P100 are provided in the primary molded part P. The through portions P100 include an exposed surface P101 that is exposed to the covering portion Q40.

[0666] The above configuration provides the following advantages, for example: Because the coating target portion PC of the primary molded portion P is coated by the coating portion Q40 of the secondary molded portion Q, the area of ​​the joint between the primary molded portion P and the secondary molded portion Q is increased; The position of the secondary molded portion Q relative to the primary molded portion P is stabilized; In the secondary molding process in which the secondary molded portion Q is molded, the exposed surface P101 of the through portion P100 comes into contact with the mold; The force that the primary molded portion P receives from the resin material corresponding to the secondary molded portion Q is transmitted to the mold, thereby suppressing deformation during secondary molding.

[0667] In one example of the molded article 20, the through portion P100 is configured to protrude from the outer surface PF of the part to be coated PC.

[0668] According to the above configuration, for example, the following effects can be obtained: The exposed surface P101 of the through portion P100 is more likely to come into appropriate contact with the mold.

[0669] In one example of the molded article 20, the portion to be covered PC includes a first end portion PCA in the axial direction. The exposure structure 500 includes a plurality of penetration portions P100 provided in the first end portion PCA.

[0670] According to the above configuration, for example, the following effects can be obtained: The effect of suppressing deformation during secondary molding is enhanced.

[0671] In one example of the molded article 20, the multiple through-holes P100 provided at the first end PCA of the coating target part PC are arranged at intervals in the axial direction.

[0672] According to the above-mentioned configuration, for example, the following effects can be obtained: The effect of suppressing deformation during secondary molding is enhanced.

[0673] In one example of the molded article 20, the portion to be covered PC includes a second end PCB in the axial direction. The exposure structure 500 includes a plurality of penetration portions P100 provided in the second end PCB.

[0674] According to the above configuration, for example, the following effects can be obtained: The effect of suppressing deformation during secondary molding is enhanced.

[0675] In one example of the molded product 20, the multiple through-holes P100 provided in the second end PCB of the coating target part PC are arranged at intervals in the axial direction.

[0676] According to the above configuration, for example, the following effects can be obtained: The effect of suppressing deformation during secondary molding is enhanced.

[0677] In one example of the molded product 20, the secondary molded portion Q includes a gate-corresponding surface corresponding to a gate-related portion of the secondary molded portion Q, and an opposite surface located on the opposite side of the gate-corresponding surface. The exposed surface P101 includes at least a portion corresponding to the opposite surface.

[0678] According to the above-mentioned configuration, for example, the following effects can be obtained: The effect of suppressing deformation during secondary molding is enhanced.

[0679] In one example of the molded article 20, the exposed surface P101 is provided so as not to overlap the parting line of the molded article 20.

[0680] The above-described configuration provides the following advantages, for example: The design of the molded product 20 can be expected to be improved.

[0681] In one example of the molded article 20, the portion to be coated PC includes a constricted portion P20.

[0682] According to the above-described configuration, for example, the following effects can be obtained: The position of the secondary molded portion Q relative to the primary molded portion P is more stable.

[0683] In one example of the molded article 20, the exposed surface P101 for the at least one penetration P100 includes a curved surface.

[0684] The above configuration provides the following advantages, for example: The force applied to the primary molding portion P in the secondary molding step is more easily dispersed over a wide range, which contributes to, for example, enhancing the effect of suppressing deformation during secondary molding.

[0685] In one example of the molded product 20, an exposed surface P101 of at least one through-hole P100 is located radially inward with respect to the outer surface QF of the secondary molded portion Q.

[0686] The above-described configuration provides the following advantages, for example: The exposed surface P101 is less noticeable, which contributes to improving the design of the molded product 20, for example.

[0687] In one example of the molded product 20, the material of the secondary molded portion Q includes a transparent resin or a translucent resin.

[0688] The above-described configuration provides the following advantages, for example: The design of the molded product 20 can be expected to be improved.

[0689] In one example of the molded product 20, the material of the primary molded portion P includes polyacetal, polypropylene, or saturated polyester resin.

[0690] The above configuration provides the following advantages, for example: The wear resistance of the primary molded portion P and the physical properties of the toothbrush 10A are improved. The physical properties of the toothbrush 10A include, for example, the resistance to hair removal of the tufts.

[0691] In one example of the molded product 20, the thermoplastic resin forming the secondary molded portion Q is a transparent resin or a translucent resin.

[0692] The above-described configuration provides the following advantages, for example: The design of the molded product 20 can be expected to be improved.

[0693] In one example of the molded article 20, the molded article 20 is a molded article 20 of a toothbrush 10A.

[0694] According to the above configuration, for example, the following effects can be obtained: Toothbrush 10A can obtain the above-mentioned various effects.

[0695] (Effect 2) The configuration exemplified in the embodiment provides the following effects, for example.

[0696] In one example of the molded article 20, the exposure structure 500 includes one or more penetration portions P100. At least one penetration portion P100 included in the exposure structure 500 is provided on the surface opposite the portion to be coated PC.

[0697] According to the above configuration, for example, the following effects can be obtained: Lateral deformation or lateral deformation in combined deformation is suppressed. These effects can be obtained in any of the following first to third examples.

[0698] In a first example, the exposed structure 500 includes one or more of the first A-type through-portion, the second A-type through-portion, and the third A-type through-portion, but does not include any other through-portions P100. A first peripheral end P121 of the through-portion P100 is located on the opposite surface. A second peripheral end P122 of the through-portion P100 is located on the opposite surface.

[0699] That is, in the first example, the through portion P100 is provided so as to fit within the opposite surface, and the through portion P100 is not provided in the first intermediate surface and the second intermediate surface, which are regions adjacent to the opposite surface.

[0700] In the second example, the exposed structure 500 includes one or more of the first A-type through-portion, the second A-type through-portion, and the third A-type through-portion, but does not include any other through-portions P100. A first peripheral end P121 of the through-portion P100 is located on the first intermediate surface or gate-corresponding surface. A second peripheral end P122 of the through-portion P100 is located on the second intermediate surface or gate-corresponding surface.

[0701] In the third example, the exposed structure 500 is based on the first example and further includes one or more of the first A-type through-portion, the second A-type through-portion, and the through-portion P100 other than the third A-type through-portion.

[0702] In one example of the molded article 20, the exposure structure 500 includes one or more penetration portions P100. At least one penetration portion P100 included in the exposure structure 500 is provided on the surface opposite the portion to be coated PC.

[0703] According to the above configuration, for example, the following effects can be obtained: Vertical deformation or vertical deformation in combined deformation is suppressed.

[0704] In one example of the molded article 20, the exposure structure 500 includes one or more first type penetration portions P100X1 provided on the opposite side of the portion to be coated PC, and one or more second type penetration portions P100X2 provided on the opposite side of the portion to be coated PC.

[0705] According to the above configuration, for example, the following effects can be obtained: The effect of suppressing deformation during secondary molding is enhanced.

[0706] In one example of the molded product 20, at least one through-hole P100 and the covering portion Q40 positioned around it form a recessed structure 501.

[0707] The above configuration provides the following advantages, for example: The exposed surface P101 of the through-hole P100 is less noticeable. The design of the molded product 20 is expected to be improved. The hand is less likely to slip off the handle 110 when using the toothbrush 10A. The operability of the toothbrush 10A is improved.

[0708] In one example of molded product 20, exposure structure 500 includes a first group related to penetration portion P100. A value obtained by multiplying the reference hand width by a predetermined coefficient is set as a specific distance, which is the distance between a specific position of second end 110B of main body 100 in the axial direction and a specific position of the first group.

[0709] The above configuration provides the following advantages, for example: Handle 110 is easier to grip; Toothbrush 10A is easier to use;

[0710] (Effect 3) The configurations exemplified in the respective embodiments provide the following advantages, for example.

[0711] In one example of the molded article 20, the molded article 20 includes a primary molded portion P formed of a hard thermoplastic resin, a secondary molded portion Q formed of a hard thermoplastic resin, and a restricting structure R that restricts the movement of the secondary molded portion Q relative to the primary molded portion P. The secondary molded portion Q includes a covering portion Q40 that covers the outer surface PF of the primary molded portion P.

[0712] The above configuration provides the following advantages, for example: The restriction structure R restricts the movement of the secondary molded portion Q relative to the primary molded portion P, stabilizing the position of the secondary molded portion Q relative to the primary molded portion P. The secondary molded portion Q includes the covering portion Q40, increasing the area of ​​the joint between the primary molded portion P and the secondary molded portion Q. This also stabilizes the position of the secondary molded portion Q relative to the primary molded portion P.

[0713] In one example of the molded article 20, the covering portion Q40 includes a first end portion Q40A, a second end portion Q40B, and a middle portion Q40C in the axial direction of the molded article 20. The first end portion Q40A, the second end portion Q40B, and the middle portion Q40C are joined to the outer surface PF of the primary molded part P.

[0714] According to the above-described configuration, for example, the following effects can be obtained: The effect of restricting the movement of the secondary molded portion Q relative to the primary molded portion P is enhanced.

[0715] In one example of the molded product 20, the covering portion Q40 is configured to cover at least a part of the restricting structure R.

[0716] According to the above configuration, for example, the following effects can be obtained: The restricting structure R is less likely to be touched by the user's hands.

[0717] In one example of the molded article 20, the restricting structure R includes a diameter changing portion R20 provided in the primary molded portion P. The diameter changing portion R20 is configured so that the outer diameter of the molded article 20 changes in the axial direction.

[0718] According to the above-described configuration, for example, the following effects can be obtained: The movement of the secondary molding portion Q relative to the primary molding portion P is appropriately restricted.

[0719] In one example of the molded product 20, the restricting structure R includes a surface undulation portion R30 provided in the primary molded portion P. The surface undulation portion R30 is configured to impart undulations to the outer surface PF of the primary molded portion P.

[0720] According to the above-described configuration, for example, the following effects can be obtained: The movement of the secondary molding portion Q relative to the primary molding portion P is appropriately restricted.

[0721] In one example of the molded article 20, the restricting structure R includes a protrusion R40 provided in the primary molded portion P. The protrusion R40 is configured to protrude in a direction intersecting the central axis of the molded article 20.

[0722] According to the above-described configuration, for example, the following effects can be obtained: The movement of the secondary molding portion Q relative to the primary molding portion P is appropriately restricted.

[0723] In one example of the molded product 20, the restricting structure R includes a placement portion R50 provided in the primary molded portion P. The placement portion R50 includes a space in which a part of the secondary molded portion Q is placed.

[0724] According to the above-described configuration, for example, the following effects can be obtained: The movement of the secondary molding portion Q relative to the primary molding portion P is appropriately restricted.

[0725] In one example of the molded product 20, the restricting structure R includes an undercut portion R60 provided in the primary molded portion P.

[0726] According to the above-described configuration, for example, the following effects can be obtained: The movement of the secondary molding portion Q relative to the primary molding portion P is appropriately restricted.

[0727] In one example of the molded article 20, the restricting structure R includes a circumferential portion RQ provided in the secondary molded portion Q. The circumferential portion RQ is configured to extend in the circumferential direction of the molded article 20.

[0728] According to the above-described configuration, for example, the following effects can be obtained: The movement of the secondary molding portion Q relative to the primary molding portion P is appropriately restricted.

[0729] In one example of the molded product 20, the molded product 20 includes a primary molded portion P, a secondary molded portion Q provided in the primary molded portion P, and a decorative portion 400 provided in the primary molded portion P. The secondary molded portion Q is made of a transparent or translucent resin and includes a decorative exterior portion Q50 that covers the decorative portion 400.

[0730] The above configuration provides the following advantages, for example: The decorative portion 400 is provided on the outer surface PF of the primary molded part P, which is expected to improve the design of the oral care product 10. The decorative portion 400 is covered by the decorative exterior portion Q50, which makes it visible through the decorative exterior portion Q50. This also contributes to improving the design of the oral care product 10.

[0731] In one example of the molded product 20, the decorative portion 400 includes a surface undulation portion 410 that provides the outer surface PF of the primary molded part P with irregularities.

[0732] The above configuration provides the following advantages, for example: Because incident light is reflected in multiple directions, it is expected that the design of the oral care product 10 will be improved; and because the decorative part 400, including the surface undulations 410, is covered by the decorative exterior part Q50, the operability of the oral care product 10 will be improved.

[0733] In one example of molded article 20 , surface relief 410 includes a plurality of geometrically shaped surfaces 420 .

[0734] The above-described configuration provides the following advantages, for example: The appearance of the surface undulations 410 is neat, and it can be expected that the design of the oral care product 10 will be improved.

[0735] In one example of molded article 20, geometric surface 420 is a polygonal surface.

[0736] The above-described configuration provides the following advantages, for example: The appearance of the surface undulations 410 is neat, and it can be expected that the design of the oral care product 10 will be improved.

[0737] In one example of molded article 20, surface relief 410 includes a chevron portion 430. Chevron portion 430 is made up of at least two geometrically shaped surfaces 420.

[0738] The above-described configuration provides the following advantages, for example: The three-dimensional effect of the surface undulations 410 is emphasized, and it can be expected that the design of the oral care product 10 will be improved.

[0739] In one example of molded article 20, surface relief 410 includes valleys 440. Valleys 440 are made up of at least two geometrically shaped surfaces 420.

[0740] The above-described configuration provides the following advantages, for example: The three-dimensional effect of the surface undulations 410 is emphasized, and it can be expected that the design of the oral care product 10 will be improved.

[0741] In one example of molded article 20, the plurality of geometric surfaces 420 are arranged along a reference line, which is a spiral.

[0742] The above configuration provides the following advantages, for example: The arrangement of the plurality of geometrically shaped surfaces 420 is orderly, and it can be expected that the design of the oral care product 10 will be improved.

[0743] In one example of the molded article 20, the molded article 20 includes a handle 110. The primary molded portion P includes a primary handle component P10 that constitutes the handle 110. The secondary molded portion Q includes a secondary handle component Q10 that constitutes the handle 110. The decorative portion 400 is provided on the outer surface PF of the primary handle component P10. The secondary handle component Q10 includes a decorative exterior portion Q50.

[0744] The above configuration provides the following advantages, for example: The decorative portion 400 is provided on the handle 110, which is one of the main parts of the molded product 20, and this is expected to improve the design of the oral care product 10.

[0745] In one example of molded article 20, molded article 20 is used in toothbrush 10A.

[0746] The above configuration provides the following advantages, for example: The design of toothbrush 10A can be expected to be improved.

[0747] In one example of the oral care device 10 , the oral care device 10 includes a molded article 20 .

[0748] The above-described configuration provides the following advantages, for example: The design of the oral care product 10 can be expected to be improved.

[0749] 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.

[0750] The above configuration provides the following advantages, for example: 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 product 20. When the number of pressed portions in the molded product 20 is reduced, the following advantages can be obtained, for example: The design of the oral care product 10 can be expected to be improved. Foreign matter is less likely to accumulate on the surface of the main body 100.

[0751] 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.

[0752] In one example of the molded product 20, the protrusion 220 is configured as a portion 300 intended to be removed.

[0753] According to the above configuration, for example, the following effects can be obtained: A molded product 20 that does not include a pressed portion of the protrusion 220 can be manufactured.

[0754] In one example of the molded article 20 , the protrusion 220 connects to the end of the body 100 .

[0755] According to the above configuration, for example, the following effects can be obtained: The influence of the protrusion 220 on the design of the shape of the main body 100 is reduced.

[0756] In one example of molded article 20 , protrusion 220 is thinner than body 100 .

[0757] According to the above configuration, the following effects can be obtained, for example: The amount of material used to form the protrusion 220 can be reduced.

[0758] In one example of molded article 20 , protrusion 220 is shorter than body 100 .

[0759] According to the above configuration, the following effects can be obtained, for example: The amount of material used to form the protrusion 220 can be reduced.

[0760] 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 PF 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.

[0761] According to the above-described configuration, for example, the following effects can be obtained: The number of pressed portions can be reduced with respect to the secondary main body constituent portion QA.

[0762] In one example of toothbrush 10A, toothbrush 10A includes molded article 20.

[0763] The above configuration provides the following advantages, for example: The design of toothbrush 10A can be expected to be improved.

[0764] 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.

[0765] The above configuration provides the following advantages, for example: The design of toothbrush 10A can be expected to be improved.

[0766] 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.

[0767] According to the above configuration, for example, the following effects can be obtained: The number of pressed portions of the main body 100 can be reduced.

[0768] 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.

[0769] According to the above configuration, for example, the following effects can be obtained: The number of pressed portions in the secondary molded portion Q can be reduced.

[0770] 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.

[0771] According to the above-described configuration, the following effects can be obtained, for example: The number of pressed portions of the molded product 20 can be reduced.

[0772] 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 PF of the primary handle component P10. A transparent or translucent resin is used as the material for the secondary molded portion Q.

[0773] The above-described configuration provides the following advantages, for example: The primary handle component P10 can be seen from the outside of the molded product 20. The design of the oral care product 10 can be expected to be improved.

[0774] In one example of molded article 20, primary handle forming portion P10 of primary molded part P includes one or more protrusions P13.

[0775] According to the above configuration, for example, the following effects can be obtained: The movement of the secondary molded portion Q relative to the primary molded portion P in the axial direction is restricted by the protrusion P13. The position of the secondary molded portion Q relative to the primary molded portion P is stabilized.

[0776] 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.

[0777] The above configuration provides the following advantages, for example: The design of the oral care product 10 is expected to be improved; Axial movement of the secondary molded portion Q relative to the primary molded portion P is restricted by the constricted portion P20 of the secondary molded portion Q; The position of the secondary molded portion Q relative to the primary molded portion P is stabilized.

[0778] 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.

[0779] The above-described configuration provides the following advantages, for example: The design of the oral care product 10 can be expected to be improved; The handle 110 is easier to grip.

[0780] 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.

[0781] The above-described configuration provides the following advantages, for example: The design of the oral care product 10 can be expected to be improved.

[0782] In one example of the molded article 20 , the molded article 20 includes a decorative portion 400 .

[0783] The above-described configuration provides the following advantages, for example: The design of the oral care product 10 can be expected to be improved.

[0784] In one example of a method for manufacturing the molded product 20, the secondary cavity is filled with a resin material while the primary molded part P is in a fixed state.

[0785] The above configuration provides the following advantages, for example: As the resin material fills the secondary cavity, the primary handle constituent part P10 of the primary molded part P receives force from the resin material. Because the primary molded part P is fixed, bending of the primary handle constituent part P10 is suppressed.

[0786] (Second embodiment) The molded product 20 of the second embodiment is configured based on the first embodiment. The molded product 20 of this embodiment includes a configuration common to the prerequisite embodiment. Some or all of the description of the configuration common to the prerequisite embodiment in the molded product 20 of this embodiment will be omitted.

[0787] Please refer to Fig. 37. Fig. 37 shows a cross section of the molded article 20 parallel to the third reference plane. The configuration of the molded article 20 of this embodiment includes a configuration in which a part of the molded article 20 in the underlying embodiment is modified to fit the shape of the cross section shown in the figure.

[0788] The primary molded part P includes a recessed part P60. The configuration of the recessed part P60 can be selected arbitrarily. The configuration of the recessed part P60 is not limited to the exemplified configuration. The recessed part P60 is configured to be recessed with respect to the outer surface PF of the primary molded part P.

[0789] The recess P60 is provided, for example, in the primary body forming part PA. The recess P60 includes an arrangement space P61, an arrangement surface P62, and an opening P63. The arrangement space P61 is configured so that a part of the secondary molded part Q can be arranged therein. The arrangement surface P62 defines the arrangement space P61. The opening P63 opens to the outer surface PF of the primary molded part P.

[0790] The position of the opening P63 in the circumferential direction of the primary molded portion P will be illustrated below. In a first example, the opening P63 opens to the front of the primary molded portion P. In a second example, the opening P63 opens to the back of the primary molded portion P. In a third example, the opening P63 opens to a first side surface of the primary molded portion P. In a fourth example, the opening P63 opens to a second side surface of the primary molded portion P.

[0791] The following are examples of the position of the recess P60 in the axial direction of the primary molded part P. In a first example, the recess P60 is provided in the primary handle constituent part P10. In a second example, the recess P60 is provided in the neck 120. In a third example, the recess P60 is provided in the head 130.

[0792] In a fourth example, the recess P60 is provided in the primary handle component P10 and the neck 120. In a fifth example, the recess P60 is provided in the neck 120 and the head 130. In a sixth example, the recess P60 is provided in the primary handle component P10, the neck 120, and the head 130.

[0793] The following are examples of the configuration of the recess P60 related to release from the primary mold. In a first example, the recess P60 is configured to be a non-undercut with respect to the primary mold. The side of the arrangement surface P62 is, for example, parallel to the second reference surface or the third reference surface. In a second example, the recess P60 is configured to be an undercut with respect to the primary mold. The arrangement surface P62 includes, for example, a side that is inclined with respect to the second reference surface or the third reference surface.

[0794] The secondary molded portion Q includes an internal protrusion Q60. The internal protrusion Q60 is disposed in the recess P60. The internal protrusion Q60 is configured to fill the arrangement space P61 of the recess P60. The outer surface QF of the internal protrusion Q60 is joined to the arrangement surface P62 of the recess P60.

[0795] The restricting structure R includes a placement portion R50. The configuration of the placement portion R50 can be selected arbitrarily. The configuration of the placement portion R50 is not limited to the configuration shown in the example. The placement portion R50 is configured to restrict the relative movement of the secondary molding portion Q and the relative rotation of the secondary molding portion Q.

[0796] The arrangement portion R50 is provided in the primary molded portion P. The arrangement portion R50 is configured to be recessed with respect to the outer surface PF of the primary molded portion P. A recess P60 of the primary molded portion P corresponds to the arrangement portion R50 of the restricting structure R.

[0797] Examples of the form in which the regulating structure R includes a plurality of arrangement portions R50 include Example A and Example B. In Example A, the plurality of arrangement portions R50 are arranged regularly. In Example B, the plurality of arrangement portions R50 are arranged irregularly. As details of Example A, for example, Examples A1 to A11 can be mentioned.

[0798] In Example A1, the regulating structure R includes a group of a plurality of axially aligned arrangement portions R50. In Example A2, the regulating structure R includes a plurality of the groups of Example A1.

[0799] In Example A3, the regulating structure R includes a group of a plurality of arrangement portions R50 aligned in the width direction. In Example A4, the regulating structure R includes a plurality of groups of Example A3.

[0800] In Example A5, the regulating structure R includes a group of a plurality of arrangement portions R50 aligned in the thickness direction. In Example A6, the regulating structure R includes a plurality of groups of Example A5.

[0801] In Example A7, the restricting structure R includes a group of a plurality of arrangement portions R50 aligned in the circumferential direction. In Example A8, the restricting structure R includes a plurality of the groups of Example A7.

[0802] In Example A9, the regulating structure R includes a group of multiple arrangement portions R50 aligned in a direction different from that of Examples A1 to A8. In Example A10, the regulating structure R includes multiple groups of Example A9.

[0803] In Example A11, the regulating structure R includes at least two of the configurations of Examples A1 to A10. In Example A12, the regulating structure R includes at least one of the configurations of Examples A1 to A11 and the configuration of Example B.

[0804] In one example of this embodiment, the restricting structure R includes an undercut portion R60. The configuration of the undercut portion R60 can be selected arbitrarily. The configuration of the undercut portion R60 is not limited to the illustrated configuration. The undercut portion R60 is configured to restrict the relative movement and relative rotation of the secondary molded portion Q.

[0805] The undercut portion R60 is provided in the primary molded portion P. The recess P60 of the primary molded portion P corresponds to the undercut portion R60 of the restricting structure R. First to seventh examples are given as examples of the configuration of the undercut portion R60.

[0806] In a first example, the undercut portion R60 is configured to restrict a first type of relative movement. In a second example, the undercut portion R60 is configured to restrict a second type of relative movement. In a third example, the undercut portion R60 is configured to restrict a third type of relative movement. In a fourth example, the undercut portion R60 is configured to include at least two of the configurations of the first to third examples.

[0807] In a fifth example, the undercut portion R60 is configured to restrict a first type of relative rotation. In a sixth example, the undercut portion R60 is configured to restrict a second type of relative rotation. In a seventh example, the undercut portion R60 is configured to include both the configurations of the fifth and sixth examples.

[0808] In an example where the recess P60 is configured to be an undercut, the restriction structure R includes a placement portion R50 and an undercut portion R60. The recess P60 of the primary molding part P corresponds to the placement portion R50 and the undercut portion R60 of the restriction structure R. In an embodiment where the restriction structure R includes the undercut portion R60, for example, a slide mold is used to mold the molded product 20.

[0809] (Third embodiment) The molded product 20 of the third embodiment is configured based on the first or second embodiment. The molded product 20 of this embodiment includes configurations in common with the prerequisite embodiments. Some or all of the description of the configurations in the molded product 20 of this embodiment that are in common with the prerequisite embodiments will be omitted.

[0810] Please refer to Fig. 38. Fig. 38 shows a cross section of the molded article 20 parallel to the third reference plane. The configuration of the molded article 20 of this embodiment includes a configuration in which a part of the molded article 20 in the underlying embodiment is modified to fit the shape of the cross section shown in the figure.

[0811] The primary molding part P includes a through-arrangement part P70. The configuration of the through-arrangement part P70 can be selected arbitrarily. The configuration of the through-arrangement part P70 is not limited to the exemplified configuration. The through-arrangement part P70 is configured to penetrate the primary molding part P.

[0812] The through-hole arrangement portion P70 is provided, for example, in the primary main body constituent portion PA. The through-hole arrangement portion P70 includes a through-hole space P71, an inner peripheral surface P72, and two openings P73. The through-hole space P71 is configured so that a portion of the secondary molded portion Q can be disposed therein. The inner peripheral surface P72 defines the through-hole space P71. The openings P73 open to the outer surface PF of the primary molded portion P. One opening P73 is provided at one end of the through-hole arrangement portion P70. The other opening P73 is provided at the other end of the through-hole arrangement portion P70.

[0813] The positions of the openings P73 in the circumferential direction of the primary molded portion P will be illustrated. In a first example, one opening P73 opens to the front of the primary molded portion P. The other opening P73 opens to the back of the primary molded portion P. In a second example, one opening P73 opens to a first side surface of the primary molded portion P. The other opening P73 opens to a second side surface of the primary molded portion P.

[0814] The following describes examples of the position of the through-arrangement portion P70 in the axial direction of the primary molded portion P. In a first example, the through-arrangement portion P70 is provided in the primary handle component P10. In a second example, the through-arrangement portion P70 is provided in the neck 120. In a third example, the through-arrangement portion P70 is provided in the head 130.

[0815] In a fourth example, the through-arrangement P70 is provided on the primary handle component P10 and the neck 120. In a fifth example, the through-arrangement P70 is provided on the neck 120 and the head 130. In a sixth example, the through-arrangement P70 is provided on the primary handle component P10, the neck 120, and the head 130.

[0816] The following describes examples of the configuration of the through-hole arrangement portion P70 related to release from the primary mold. In a first example, the through-hole arrangement portion P70 is configured to be a non-undercut with respect to the primary mold. The central axis of the through-hole arrangement portion P70 is, for example, parallel to the thickness direction. In a second example, the through-hole arrangement portion P70 is configured to be an undercut with respect to the primary mold. The central axis of the through-hole arrangement portion P70 is, for example, inclined with respect to the thickness direction.

[0817] The secondary molded portion Q includes a penetrating protrusion Q70. The penetrating protrusion Q70 is disposed in the penetrating arrangement portion P70. The penetrating protrusion Q70 is configured to fill the penetrating space P71 of the penetrating arrangement portion P70. The outer surface QF of the penetrating protrusion Q70 is joined to the inner peripheral surface P72 of the penetrating arrangement portion P70.

[0818] The restricting structure R includes a positioning portion R50. The penetrating positioning portion P70 of the primary molded portion P corresponds to the positioning portion R50 of the restricting structure R. In one example, the penetrating positioning portion P70 corresponds to the undercut portion R60 of the restricting structure R.

[0819] (Fourth embodiment) The molded product 20 of the fourth embodiment is configured based on the second and third embodiments. The molded product 20 of this embodiment includes configurations in common with the prerequisite embodiments. Some or all of the description of the configurations in the molded product 20 of this embodiment that are in common with the prerequisite embodiments will be omitted.

[0820] Please refer to Fig. 39. Fig. 39 shows a cross section of the molded article 20 parallel to the third reference plane. The configuration of the molded article 20 of this embodiment includes a configuration in which a part of the molded article 20 in the underlying embodiment is modified to fit the shape of the cross section shown in the figure.

[0821] The primary molding portion P includes a plurality of recesses P60. The configuration of the plurality of recesses P60 can be selected arbitrarily. The configuration of the plurality of recesses P60 is not limited to the exemplified configuration. The plurality of recesses P60 includes, for example, a first recess P601 and a second recess P602. The first recess P601 is provided at a position opposite to the second recess P602 in the radial direction.

[0822] The first recess P601 is provided in, for example, the primary body forming part PA. The first recess P601 includes an arrangement space P61, an arrangement surface P62, and an opening P63. The arrangement space P61 is configured to be recessed with respect to the outer surface PF of the primary molded part P. The arrangement surface P62 defines the arrangement space P61. The opening P63 opens to the outer surface PF of the primary molded part P.

[0823] The following are examples of the position of the first recess P601 in the circumferential direction of the primary molding portion P. In a first example, the first recess P601 is provided on the front surface of the primary molding portion P. In a second example, the first recess P601 is provided on the back surface of the primary molding portion P. In a third example, the first recess P601 is provided on a first side surface of the primary molding portion P. In a fourth example, the first recess P601 is provided on a second side surface of the primary molding portion P.

[0824] The following describes examples of the position of the first recess P601 in the axial direction of the primary molded part P. In a first example, the first recess P601 is provided in the primary handle constituent part P10. In a second example, the first recess P601 is provided in the neck 120. In a third example, the first recess P601 is provided in the head 130.

[0825] In a fourth example, the first recess P601 is provided in the primary handle component P10 and the neck 120. In a fifth example, the first recess P601 is provided in the neck 120 and the head 130. In a sixth example, the first recess P601 is provided in the primary handle component P10, the neck 120, and the head 130.

[0826] The second recess P602 is provided in, for example, the primary body forming part PA. The second recess P602 includes an arrangement space P61, an arrangement surface P62, and an opening P63. The arrangement space P61 is configured to be recessed with respect to the outer surface PF of the primary molded part P. The arrangement surface P62 defines the arrangement space P61. The opening P63 opens to the outer surface PF of the primary molded part P.

[0827] The following are examples of the position of the second recess P602 in the circumferential direction of the primary molding portion P. In a first example, the second recess P602 is provided on the back surface of the primary molding portion P. In a second example, the second recess P602 is provided on the front surface of the primary molding portion P. In a third example, the second recess P602 is provided on the second side surface of the primary molding portion P. In a fourth example, the second recess P602 is provided on the first side surface of the primary molding portion P.

[0828] The following describes examples of the position of the second recess P602 in the axial direction of the primary molding part P. In a first example, the second recess P602 is provided in the primary handle constituent part P10. In a second example, the second recess P602 is provided in the neck 120. In a third example, the second recess P602 is provided in the head 130.

[0829] In a fourth example, the second recesses P602 are provided in the primary handle component P10 and the neck 120. In a fifth example, the second recesses P602 are provided in the neck 120 and the head 130. In a sixth example, the second recesses P602 are provided in the primary handle component P10, the neck 120, and the head 130.

[0830] The relationship between the length of the first recess P601 and the length of the second recess P602 in the axial direction will be illustrated below. In a first example, the length of the first recess P601 is longer than the length of the second recess P602. In a second example, the length of the first recess P601 is shorter than the length of the second recess P602. In a third example, the length of the first recess P601 is equal to the length of the second recess P602.

[0831] The relationship between the length of the first recessed portion P601 and the length of the second recessed portion P602 in the circumferential direction will be illustrated below. In a first example, the length of the first recessed portion P601 is longer than the length of the second recessed portion P602. In a second example, the length of the first recessed portion P601 is shorter than the length of the second recessed portion P602. In a third example, the length of the first recessed portion P601 is equal to the length of the second recessed portion P602.

[0832] The primary molding part P includes a through-hole arrangement part P70. The through-hole arrangement part P70 connects the first recess P601 and the second recess P602. The through-hole arrangement part P70 is provided inside the primary molding part P. The through-hole arrangement part P70 penetrates the primary molding part P. The through-hole arrangement part P70 opens to the arrangement surface P62 of the first recess P601 and the arrangement surface P62 of the second recess P602.

[0833] The secondary molded portion Q includes multiple internal protrusions Q60. The configuration of the multiple internal protrusions Q60 can be selected arbitrarily. The configuration of the multiple internal protrusions Q60 is not limited to the configuration shown in the example. The multiple internal protrusions Q60 include, for example, a first internal protrusion Q60A and a second internal protrusion Q60B.

[0834] The first internal protrusion Q60A is placed in the first recess P601. The first internal protrusion Q60A is configured to fill the placement space P61 of the first recess P601. The first internal protrusion Q60A is joined to the placement surface P62 of the first recess P601.

[0835] The second internal protrusion Q60B is placed in the second recess P602. The second internal protrusion Q60B is configured to fill the placement space P61 of the second recess P602. The second internal protrusion Q60B is bonded to the bottom surface of the placement surface P62 of the second recess P602.

[0836] The secondary molded portion Q includes a penetrating protrusion Q70, which connects the first inner protrusion Q60A and the second inner protrusion Q60B.

[0837] The restricting structure R includes a placement portion R50. The recess P60 of the primary molding portion P corresponds to the placement portion R50 of the restricting structure R.

[0838] (Fifth embodiment) The molded product 20 of the fifth embodiment is configured based on any one of the first to fourth embodiments. The molded product 20 of this embodiment includes configurations in common with the underlying embodiments. Some or all of the description of the configurations in the molded product 20 of this embodiment that are in common with the underlying embodiments will be omitted.

[0839] Please refer to Fig. 40. Fig. 40 shows a cross section of the molded article 20 parallel to the third reference plane. The configuration of the molded article 20 of this embodiment includes a configuration in which a part of the molded article 20 in the underlying embodiment is modified to fit the shape of the cross section shown in the figure.

[0840] The primary molded portion P includes one or more protrusions P80. The configuration of the protrusions P80 can be selected arbitrarily. The configuration of the protrusions P80 is not limited to the exemplified configuration. The protrusions P80 protrude radially from the outer surface PF of the primary molded portion P.

[0841] The following are examples of the position of the protrusion P80 in the circumferential direction of the primary molded portion P. In a first example, the protrusion P80 is provided on the front surface of the primary molded portion P. In a second example, the protrusion P80 is provided on the back surface of the primary molded portion P. In a third example, the protrusion P80 is provided on a first side surface of the primary molded portion P. In a fourth example, the protrusion P80 is provided on a second side surface of the primary molded portion P.

[0842] The following describes examples of the position of the protrusion P80 in the axial direction of the primary molded part P. In a first example, the protrusion P80 is provided on the primary handle constituent part P10. In a second example, the protrusion P80 is provided on the neck 120. In a third example, the protrusion P80 is provided on the head 130.

[0843] In a fourth example, the protrusion P80 is provided on the primary handle component P10 and the neck 120. In a fifth example, the protrusion P80 is provided on the neck 120 and the head 130. In a sixth example, the protrusion P80 is provided on the primary handle component P10, the neck 120, and the head 130.

[0844] The protrusion P80 includes, for example, a side surface P81 and a top surface P82. The side surface P81 includes a first side surface P81A and a second side surface P81B. The first side surface P81A is located in a first axial direction relative to the center of the protrusion P80 in the width direction. The second side surface P81B is located in a second axial direction relative to the center of the protrusion P80 in the width direction.

[0845] The protruding portion P80 includes, for example, a base portion P83, a top portion P84, and an intermediate portion P85. The base portion P83 is connected to the outer surface PF of the primary molding part P that is positioned around the protruding portion P80. The top portion P84 includes a top surface P82. The intermediate portion P85 is positioned between the base portion P83 and the top portion P84 in the height direction of the protruding portion P80.

[0846] The following describes examples of the configuration of the protrusion P80 related to release from the primary mold. In a first example, the protrusion P80 is configured to be a non-undercut with respect to the primary mold. In a second example, the protrusion P80 is configured to be an undercut with respect to the primary mold.

[0847] The width of the protrusion P80 is indicated by, for example, the distance between the first side surface P81A and the second side surface P81B in a cross section parallel to the third reference plane. An example of setting the width of the protrusion P80 in the height direction of the protrusion P80 will be described.

[0848] In a first example, the width of the protrusion P80 decreases from the base P83 of the protrusion P80 toward the top P84. FIG. 40 shows the first example. In a second example, the width of the protrusion P80 is constant in the height direction of the protrusion P80. In a third example, the width of the protrusion P80 increases from the base P83 of the protrusion P80 toward the top P84. In a fourth example, the width of the protrusion P80 increases from the middle part P85 toward the base P83 and the top P84.

[0849] The secondary molded portion Q includes a covering portion Q40. The covering portion Q40 includes a first circumferential end portion Q41 and a second circumferential end portion Q42. The first circumferential end portion Q41 includes an end surface Q41A. The second circumferential end portion Q42 includes an end surface Q42A.

[0850] The secondary molded portion Q includes a discontinuous portion Q43. The discontinuous portion Q43 is formed between end surface Q41A and end surface Q42A. A protrusion P80 is disposed at the discontinuous portion Q43. End surface Q41A is joined to a first side surface P81A of the protrusion P80. End surface Q42A is joined to a second side surface P81B of the protrusion P80.

[0851] A part or all of the top surface P82 of the protrusion P80 is not covered by the covering portion Q40. A part or all of the top surface P82 is exposed to the covering portion Q40. In an example in which the protrusion P80 is provided on the covering target portion PC of the primary molding part P, the protrusion P80 corresponds to the through portion P100 of the exposure structure 500. The exposed surface P101 is composed of a part or all of the top surface P111.

[0852] The top surface P82 and the outer surface QF of the covering portion Q40 located around the top surface P82 constitute a part of the outer surface 20F of the molded article 20. The covering portion Q40 is configured so that the top surface P82 and the outer surface QF of the covering portion Q40 are continuous. The part of the outer surface 20F of the molded article 20 constituted by the outer surface QF of the covering portion Q40 and the top surface P82 is a smooth surface.

[0853] The restricting structure R includes a protruding portion R40 and a surrounding portion RQ. The protruding portion P80 of the primary molded portion P corresponds to the protruding portion R40 of the restricting structure R. The covering portion Q40 of the secondary molded portion Q corresponds to the surrounding portion RQ of the restricting structure R.

[0854] (Sixth embodiment) The molded product 20 of the sixth embodiment is configured based on the fifth embodiment. The molded product 20 of this embodiment includes configurations in common with the underlying embodiment. Some or all of the description of the configurations in the molded product 20 of this embodiment that are in common with the underlying embodiment will be omitted.

[0855] Please refer to Fig. 41. Fig. 41 shows a cross section of the molded article 20 parallel to the third reference plane. The configuration of the molded article 20 of this embodiment includes a configuration in which a part of the molded article 20 in the underlying embodiment is modified to fit the shape of the cross section shown in the figure.

[0856] In this embodiment, the configuration of the covering portion Q40 differs from the previous embodiment. The covering portion Q40 includes an internal recess Q44. The internal recess Q44 is configured to be recessed radially from the inner surface of the covering portion Q40. The protrusion P80 is disposed in the internal recess Q44. The internal recess Q44 covers the top surface P82 of the protrusion P80.

[0857] (Seventh embodiment) The molded product 20 of the seventh embodiment is configured based on the fifth or sixth embodiment. The molded product 20 of this embodiment includes configurations in common with the prerequisite embodiments. Some or all of the description of the configurations in the molded product 20 of this embodiment that are in common with the prerequisite embodiments will be omitted.

[0858] Please refer to Fig. 42. Fig. 42 shows a cross section of the molded article 20 parallel to the second reference plane. The configuration of the molded article 20 of this embodiment includes a configuration in which a part of the molded article 20 in the underlying embodiment is modified to fit the shape of the cross section shown in the figure.

[0859] The primary molded portion P can take, for example, the following first or second form as a configuration related to the protrusion P80. Figure 42 shows an example of the first form.

[0860] The primary molding part P of the first embodiment includes a plurality of recesses P60 and one protrusion P80. The plurality of recesses P60 include a first recess P601 and a second recess P602. The protrusion P80 is located, for example, between the first recess P601 and the second recess P602. The primary molding part P of the second embodiment includes the same configuration as the fifth or sixth embodiment.

[0861] The protrusion P80 includes a hollow portion P88. The hollow portion P88 is configured to form an undercut with respect to the primary mold. The hollow portion P88 includes, for example, an internal space P88A and an inner circumferential surface P88B.

[0862] The internal space P88A is formed so as to be able to accommodate a part of the secondary molded portion Q. The inner peripheral surface P88B defines the internal space P88A. The configuration of the protrusion P80 will be illustrated below.

[0863] In a first example, the internal space P88A penetrates the protrusion P80. The hollow portion P88 includes a first opening P88C and a second opening P88D. The central axis of the hollow portion P88 is parallel to a predetermined direction, for example. The predetermined direction is, for example, the axial direction or the width direction.

[0864] The first opening P88C opens into the end face of the hollow portion P88 in the first axial direction, and the second opening P88D opens into the end face of the hollow portion P88 in the second axial direction.

[0865] In the second example, the internal space P88A does not penetrate the protrusion P80. The hollow portion P88 includes one of a first opening P88C and a second opening P88D. The central axis of the hollow portion P88 is parallel to a predetermined direction, for example. The predetermined direction is, for example, the axial direction or the width direction.

[0866] The secondary molded portion Q includes a hollow protrusion Q80. The hollow protrusion Q80 is placed in the internal space P88A of the hollow portion P88. The hollow protrusion Q80 is configured to fill the internal space P88A. The hollow protrusion Q80 is joined to the inner peripheral surface P88B of the hollow portion P88.

[0867] When the form of the primary molded part P is the first form, the secondary molded part Q includes multiple internal protrusions Q60. The multiple internal protrusions Q60 include a first internal protrusion Q60A and a second internal protrusion Q60B. The first internal protrusion Q60A is located in the first recess P601. The second internal protrusion Q60B is located in the second recess P602. The hollow protrusion Q80 is connected to one or both of the first internal protrusion Q60A and the second internal protrusion Q60B.

[0868] The restricting structure R includes an undercut portion R60. The hollow portion P88 of the primary molded portion P corresponds to the undercut portion R60 of the restricting structure R.

[0869] (Eighth embodiment) The molded product 20 of the eighth embodiment is configured based on any one of the fifth to seventh embodiments. The molded product 20 of this embodiment includes configurations in common with the underlying embodiments. Some or all of the description of the configurations in the molded product 20 of this embodiment that are in common with the underlying embodiments will be omitted.

[0870] Please refer to Figure 43. Figure 43 shows a plan view of the molded article 20. The protrusion P80 is configured to extend in the axial direction. The protrusion P80 includes a first end P80A, a second end P80B, and an intermediate portion P80C in the axial direction.

[0871] The first end P80A is located in a first axial direction relative to the center of the protrusion P80 in the axial direction. The second end P80B is located in a second axial direction relative to the center of the protrusion P80 in the axial direction. The middle portion P80C is located between the first end P80A and the second end P80B.

[0872] The following describes examples of setting the width of the protrusion P80 in the extension direction of the protrusion P80. In a first example, the width of the protrusion P80 increases from the first end P80A to the second end P80B. Figure 43 shows the first example. In a second example, the width of the protrusion P80 decreases from the first end P80A to the second end P80B.

[0873] In a third example, the width of the protrusion P80 increases from the intermediate portion P80C toward the first end P80A or the second end P80B. In a fourth example, the width of the protrusion P80 decreases from the intermediate portion P80C toward the first end P80A or the second end P80B. In a fifth example, the width of the protrusion P80 is constant in the axial direction.

[0874] (Ninth embodiment) The molded product 20 of the ninth embodiment is configured based on the eighth embodiment. The molded product 20 of this embodiment includes configurations in common with the underlying embodiment. Some or all of the description of the configurations in the molded product 20 of this embodiment that are in common with the underlying embodiment will be omitted.

[0875] Please refer to Figure 44. Figure 44 shows a plan view of the molded product 20. The setting of the width of the protrusion P80 in the extension direction of the protrusion P80 conforms to the premise embodiment. In the illustrated example, the setting of the width of the protrusion P80 is the fifth example shown in the premise embodiment.

[0876] The protrusion P80 includes a side undulating portion P86. The configuration of the side undulating portion P86 can be selected arbitrarily. The configuration of the side undulating portion P86 is not limited to the configuration shown in the example. The side undulating portion P86 is provided on a side surface P81 of the protrusion P80. The side undulating portion P86 is configured to impart undulations to the side surface P81 of the protrusion P80.

[0877] The side undulations P86 include at least one of a first side undulation P86A and a second side undulation P86B. The first side undulation P86A is provided on the first side surface P81A. The second side undulation P86B is provided on the second side surface P81B.

[0878] The side undulating portion P86 includes one or more side recesses P87. The side recesses P87 are configured to be recessed relative to the side surface P81. The covering portion Q40 includes one or more protrusions Q45. The protrusions Q45 are disposed in the side recesses P87. The protrusions Q45 are configured to fill the spaces in the side recesses P87. The protrusions Q45 are bonded to the surfaces of the side recesses P87. The protrusions Q45 are provided to correspond to the configuration of the side undulating portion P86.

[0879] In an example where the side undulations P86 include the first side undulations P86A, one or more protrusions Q45 are provided on the first peripheral end Q41 of the covering portion Q40. The protrusions Q45 are configured to protrude from the end surface Q41A.

[0880] In an example where the side undulating portion P86 includes the second side undulating portion P86B, one or more protrusions Q45 are provided on the second peripheral end Q42 of the covering portion Q40. The protrusions Q45 are configured to protrude from the end surface Q42A.

[0881] (Tenth embodiment) The molded product 20 of the tenth embodiment is configured based on any one of the fifth to ninth embodiments. The molded product 20 of this embodiment includes configurations in common with the underlying embodiments. Some or all of the description of the configurations in the molded product 20 of this embodiment that are in common with the underlying embodiments will be omitted.

[0882] Please refer to Fig. 45. Fig. 45 shows a cross section of the molded article 20 parallel to the second reference plane. The configuration of the molded article 20 of this embodiment includes a configuration in which a part of the molded article 20 in the underlying embodiment is modified to fit the shape of the cross section shown in the figure.

[0883] The primary molding portion P includes a plurality of recesses P60 and one protrusion P80. The plurality of recesses P60 include a first recess P601 and a second recess P602. The protrusion P80 is located, for example, between the first recess P601 and the second recess P602 in the axial or width direction.

[0884] The protrusion P80 includes a hook P89. The configuration of the hook P89 can be selected arbitrarily. The configuration of the hook P89 is not limited to the configuration shown in the example. The hook P89 is configured to form an undercut with respect to the primary mold.

[0885] In one example, the hook P89 is configured to protrude in a predetermined direction relative to the end face of the protrusion P80. The predetermined direction may be, for example, the axial direction or the width direction. The hook P89 includes a sloped surface P89A and a bottom surface P89B. The sloped surface P89A is inclined relative to the third reference plane or the second reference plane. The bottom surface P89B is parallel to the first reference plane.

[0886] The secondary molded portion Q includes an internal protrusion Q60 disposed in the first recess P601 and an internal protrusion Q60 disposed in the second recess P602. In one example, the internal protrusion Q60 disposed in the second recess P602 is joined to the inclined surface P89A and the bottom surface P89B of the hook P89.

[0887] The restricting structure R includes an undercut portion R60. The hook P89 of the primary molded portion P corresponds to the undercut portion R60 of the restricting structure R.

[0888] (Eleventh embodiment) The molded product 20 of the eleventh embodiment is configured based on any one of the first to tenth embodiments. The molded product 20 of this embodiment includes configurations in common with the underlying embodiments. Some or all of the description of the configurations in the molded product 20 of this embodiment that are in common with the underlying embodiments will be omitted.

[0889] Please refer to Figures 46 to 48. Figures 46 to 48 show cross sections of the molded article 20 parallel to the third reference plane. The configuration of the molded article 20 of this embodiment includes a configuration in which a part of the molded article 20 in the underlying embodiment is modified to fit the shape of the cross section shown in the figures.

[0890] The recess P60 of the primary molding part P includes one or more wedge parts P64. The wedge parts P64 are configured so that a part of the secondary molding part Q can be placed therein. The wedge parts P64 are configured to form an undercut with respect to the primary mold. The wedge parts P64 are provided, for example, at the bottom of the recess P60. The placement space P61 of the recess P60 includes the space formed by the wedge parts P64.

[0891] The covering portion Q40 of the secondary molded portion Q includes an internal protrusion Q60. The internal protrusion Q60 is disposed in the arrangement space P61 of the recess P60, which includes the space of the wedge portion P64. The internal protrusion Q60 is configured to fill the arrangement space P61 of the recess P60, which includes the space of the wedge portion P64, and is joined to the arrangement surface P62 of the recess P60, which includes the surface of the wedge portion P64.

[0892] The restricting structure R includes an undercut portion R60. The wedge portion P64 of the primary molded portion P corresponds to the undercut portion R60 of the restricting structure R.

[0893] (Twelfth embodiment) The molded product 20 of the twelfth embodiment is configured based on any one of the first to eleventh embodiments. The molded product 20 of this embodiment includes configurations in common with the underlying embodiments. Some or all of the description of the configurations in the molded product 20 of this embodiment that are in common with the underlying embodiments will be omitted.

[0894] Please refer to Fig. 49. Fig. 49 shows a cross section of the molded article 20 parallel to the third reference plane. The configuration of the molded article 20 of this embodiment includes a configuration in which a part of the molded article 20 in the underlying embodiment is modified to fit the shape of the cross section shown in the figure.

[0895] The primary body constituent part PA of the primary molded part P includes a main body hollow part P90. The configuration of the main body hollow part P90 can be selected arbitrarily. The configuration of the main body hollow part P90 is not limited to the configuration shown in the example. The main body hollow part P90 is configured to be an undercut with respect to the primary mold.

[0896] The main body hollow portion P90 includes, for example, an internal space P90A and an inner circumferential surface P90B. The internal space P90A is formed so that a part of the secondary molded portion Q can be disposed therein. The inner circumferential surface P90B defines the internal space P90A. The following is an example of the configuration of the primary molded portion P related to the main body hollow portion P90.

[0897] In a first example, the internal space P90A does not penetrate the primary body component PA. The main body hollow portion P90 includes a first opening. The central axis of the main body hollow portion P90 is, for example, parallel to a predetermined direction. The predetermined direction is, for example, the axial direction or the width direction. The first opening opens to the outer surface PF of the primary body component PA.

[0898] In the second example, the main body hollow portion P90 penetrates the primary main body component PA. The main body hollow portion P90 includes a first opening and a second opening. The central axis of the main body hollow portion P90 is, for example, parallel to a predetermined direction. The predetermined direction is, for example, the axial direction or the width direction. The first opening and the second opening open to the outer surface PF of the primary main body component PA.

[0899] The following are examples of the position of the main body hollow portion P90 in the axial direction of the primary main body component PA. In a first example, the main body hollow portion P90 is provided in the primary handle component P10. In a second example, the main body hollow portion P90 is provided in the neck 120. In a third example, the main body hollow portion P90 is provided in the head 130.

[0900] In a fourth example, the main body hollow portion P90 is provided in the primary handle component P10 and the neck 120. In a fifth example, the main body hollow portion P90 is provided in the neck 120 and the head 130. In a sixth example, the main body hollow portion P90 is provided in the primary handle component P10, the neck 120, and the head 130.

[0901] The secondary molded portion Q includes a main hollow convex portion Q90. The main hollow convex portion Q90 is disposed in the internal space P90A of the main hollow portion P90. The main hollow convex portion Q90 is configured to fill the internal space P90A. The main hollow convex portion Q90 is joined to the inner peripheral surface P90B of the main hollow portion P90.

[0902] The covering portion Q40 is connected to the main body hollow protrusion Q90 via at least one of the first opening and the second opening of the main body hollow portion P90.

[0903] The restricting structure R includes an undercut portion R60. A main body hollow portion P90 of the primary molded portion P corresponds to the undercut portion R60 of the restricting structure R.

[0904] (Thirteenth embodiment) The molded product 20 of the thirteenth embodiment is configured based on any one of the first to twelfth embodiments. The molded product 20 of this embodiment includes configurations in common with the underlying embodiments. Some or all of the description of the configurations in the molded product 20 of this embodiment that are in common with the underlying embodiments will be omitted.

[0905] Please refer to Fig. 50. Fig. 50 shows a cross section of the molded article 20 parallel to the third reference plane. The configuration of the molded article 20 of this embodiment includes a configuration in which a part of the molded article 20 in the underlying embodiment is modified to fit the shape of the cross section shown in the figure.

[0906] The primary molding portion P includes a ...

Claims

1. A main body, a primary molding part including a primary main body constituent part that constitutes the main body; a secondary molded portion including a secondary main body constituent portion that constitutes the main body; and an exposure structure including one or more penetrations, the body includes a handle; the primary body component includes a primary handle component that configures the handle, and a covered portion; the secondary body component includes a secondary handle component that configures the handle, and a covering component that covers the covered portion; the through-portion is provided on the primary handle component so as to penetrate the covering portion, and includes an exposed surface exposed to the covering portion; the body includes a side; the handle includes handle sides that define sides of the body; the primary handle component includes a primary side component that configures the handle side component; The secondary handle component includes a secondary side portion that covers the primary side portion and that forms the handle side portion. Molded oral care products.

2. The penetration portion is configured to protrude from the outer surface of the object to be covered. A molded oral care product according to claim 1.

3. the portion to be coated includes a first axial end, The exposure structure includes a plurality of the through portions provided at the first end portion. A molded oral care product according to claim 1 or 2.

4. The plurality of through-holes provided at the first end are arranged at intervals in the axial direction. A molded oral care product according to claim 3.

5. the portion to be coated includes a second axial end; The exposure structure includes a plurality of the through portions provided at the second end portion. A molded oral care product according to any one of claims 1 to 4.

6. The plurality of through-holes provided at the second end are arranged at intervals in the axial direction. A molded oral care product according to claim 5.

7. the secondary molding portion includes a gate corresponding surface corresponding to a gate related portion of the secondary molding portion, and an opposite surface located on an opposite side to the gate corresponding surface, The exposed surface includes at least a portion corresponding to the opposite surface. A molded oral care product according to any one of claims 1 to 6.

8. The exposed surface is provided so as not to overlap the parting line of the molded product. A molded oral care product according to any one of claims 1 to 7.

9. The portion to be coated includes a constricted portion. A molded oral care product according to any one of claims 1 to 8.

10. The exposed surface for at least one of the penetrations includes a curved surface. A molded oral care product according to any one of claims 1 to 9.

11. The exposed surface of at least one of the through-holes is positioned radially inward relative to the outer surface of the secondary molded portion. A molded oral care product according to any one of claims 1 to 10.

12. The material of the secondary molding part includes a transparent resin or a translucent resin. A molded oral care product according to any one of claims 1 to 11.

13. The material of the primary molding portion includes polyacetal, polypropylene, or saturated polyester resin. A molded oral care product according to any one of claims 1 to 12.

14. It is a molded toothbrush product. A molded oral care product according to any one of claims 1 to 13.

15. The oral care product according to any one of claims 1 to 14 is included in the molded article. Oral care products.

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