JP7512617B2 - Plastic moldings - Google Patents
Plastic moldings Download PDFInfo
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- JP7512617B2 JP7512617B2 JP2020039231A JP2020039231A JP7512617B2 JP 7512617 B2 JP7512617 B2 JP 7512617B2 JP 2020039231 A JP2020039231 A JP 2020039231A JP 2020039231 A JP2020039231 A JP 2020039231A JP 7512617 B2 JP7512617 B2 JP 7512617B2
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- 238000010137 moulding (plastic) Methods 0.000 title 1
- 239000011347 resin Substances 0.000 claims description 59
- 229920005989 resin Polymers 0.000 claims description 59
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 230000007423 decrease Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 description 4
- 238000000465 moulding Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Description
本開示は、樹脂成形品に関する。 This disclosure relates to resin molded products.
近年、自動車の燃費向上を目的として、部品の材質を金属から樹脂に変更する例が増えてきている。自動車用の樹脂成形品には、部品締結のためにボス部と呼ばれる凸形状を設けることがある。このようなボス部としては、例えば、特許文献１に開示されたボス部がある。 In recent years, there have been an increasing number of cases where the material of parts has been changed from metal to resin in order to improve the fuel efficiency of automobiles. Resin molded parts for automobiles may be provided with a convex shape called a boss portion for fastening parts. An example of such a boss portion is the boss portion disclosed in Patent Document 1.
ところで、樹脂成形品にボス部を成形する場合、ボス部の成形側と反対側の面（反対面）であってボス部に対応する部分に、樹脂材料の収縮に起因するヒケと呼ばれる窪みが生じやすい。樹脂成形品の反対面が意匠面に当たる場合、ヒケの発生を抑制することが望まれる。 When molding a boss into a resin molded product, a depression called a sink mark is likely to occur due to shrinkage of the resin material on the surface opposite the molding side of the boss (opposite surface) in the area that corresponds to the boss. When the opposite surface of a resin molded product is a design surface, it is desirable to prevent the occurrence of sink marks.
そこで、本開示は、意匠面に対して反対側の反対面にボス部が形成される構成において、ボス部の強度を確保しつつ、意匠面におけるボス部に対応する部分にヒケが生じるのを抑制した樹脂成形品を提供することを課題とする。 The present disclosure aims to provide a resin molded product in which a boss portion is formed on the opposite side of the design surface, and which ensures the strength of the boss portion while suppressing the occurrence of sink marks in the portion of the design surface that corresponds to the boss portion.
上記課題を解決するための手段には、以下の実施態様が含まれる。
＜１＞
車両用の樹脂成形品であって、
意匠面と反対面とを有する本体部と、
前記本体部の前記反対面から突出すると共に頂面から根元側に向けて中空部が形成されたボス部と、
前記ボス部の外周に周方向に間隔をあけて形成され、前記反対面から前記ボス部の突出方向に沿って延びる複数の突部と、
を備える樹脂成形品。
＜２＞
前記突部は、前記ボス部の外周に周方向に等間隔で形成されている、＜１＞
に記載の樹脂成形品。
＜３＞
前記ボス部の厚みは、前記突部の厚みよりも厚い、＜１＞又は＜２＞に記載の樹脂成形品。
＜４＞
前記突部は、前記反対面から前記ボス部の頂面まで延びている、＜１＞～＜３＞のいずれか１項に記載の樹脂成形品。
＜５＞
前記ボス部の厚みが、前記中空部の前記頂面における開口の幅以下である、＜１＞～＜４＞のいずれか１項に記載の樹脂成形品。
＜６＞
前記中空部には、ねじ部材が捩じ込まれるようになっており、
前記ボス部の厚みが、前記ねじ部材の呼び径以下である、＜１＞～＜４＞のいずれか１項に記載の樹脂成形品。
＜７＞
前記突部における前記ボス部と反対側の側面の少なくとも一部は、前記ボス部の根元側から頂面側に向けて前記ボス部の外周面からの距離が次第に短くなるように傾斜している、＜１＞～＜６＞のいずれか１項に記載の樹脂成形品。
＜８＞
複数の前記突部は、同一寸法形状である、＜１＞～＜７＞のいずれか１項に記載の樹脂成形品。
＜９＞
前記樹脂成形品が、インナーパネルである、＜１＞～＜８＞のいずれか１項に記載の樹脂成形品。
Means for solving the above problems include the following embodiments.
＜1＞
A resin molded product for a vehicle,
A main body portion having a design surface and an opposite surface;
a boss portion protruding from the opposite surface of the body portion and having a hollow portion formed from a top surface toward a base side;
a plurality of protrusions formed at intervals in a circumferential direction on an outer periphery of the boss portion and extending from the opposite surface along a protruding direction of the boss portion;
A resin molded product comprising:
＜2＞
The protrusions are formed at equal intervals in the circumferential direction on the outer periphery of the boss portion.
The resin molded product according to claim 1.
＜3＞
The resin molded product according to <1> or <2>, wherein a thickness of the boss portion is greater than a thickness of the protrusion portion.
＜4＞
The resin molded product according to any one of <1> to <3>, wherein the protrusion extends from the opposite surface to a top surface of the boss portion.
＜5＞
<5> The resin molded product according to any one of <1> to <4>, wherein a thickness of the boss portion is equal to or smaller than a width of an opening at the top surface of the hollow portion.
＜6＞
A screw member is screwed into the hollow portion,
The resin molded product according to any one of <1> to <4>, wherein a thickness of the boss portion is equal to or smaller than a nominal diameter of the screw member.
＜７＞
The resin molded product according to any one of <1> to <6>, wherein at least a part of a side surface of the protrusion opposite the boss portion is inclined such that a distance from an outer peripheral surface of the boss portion gradually decreases from a base side of the boss portion toward a top side of the boss portion.
＜8＞
The resin molded product according to any one of <1> to <7>, wherein the plurality of protrusions have the same size and shape.
＜9＞
The resin molded product according to any one of <1> to <8>, wherein the resin molded product is an inner panel.
本開示によれば、意匠面に対して反対側の反対面にボス部が形成される構成において、ボス部の強度を確保しつつ、意匠面におけるボス部に対応する部分にヒケが生じるのを抑制した樹脂成形品を提供することができる。 According to the present disclosure, in a configuration in which a boss portion is formed on the opposite side of the design surface, it is possible to provide a resin molded product that ensures the strength of the boss portion while suppressing the occurrence of sink marks in the portion of the design surface that corresponds to the boss portion.
以下、本開示を実施するための形態について詳細に説明する。但し、本開示は以下の実施形態に限定されるものではない。以下の実施形態において、その構成要素は、特に明示した場合を除き、必須ではない。数値及びその範囲についても同様であり、本開示を制限するものではない。 The following describes in detail the form for implementing the present disclosure. However, the present disclosure is not limited to the following embodiments. In the following embodiments, the components are not essential unless specifically stated otherwise. The same applies to numerical values and their ranges, and they do not limit the present disclosure.
まず、本実施形態の樹脂成形品について説明する。 First, we will explain the resin molded product of this embodiment.
＜樹脂成形品＞
本実施形態の樹脂成形品は、車両用の樹脂成形品であって、意匠面と反対面とを有する本体部と、前記本体部の前記反対面から突出すると共に頂面から根元側に向けて中空部が形成されたボス部と、前記ボス部の外周に周方向に間隔をあけて形成され、前記反対面から前記ボス部の突出方向に沿って延びる複数の突部と、を備える。以下、樹脂成形品の具体例を、図面を参照しながら説明するが、本開示はこれに限定されるものではない。
<Resin molded products>
The resin molded product of this embodiment is a resin molded product for a vehicle, and includes a main body having a design surface and an opposite surface, a boss protruding from the opposite surface of the main body and having a hollow portion formed from a top surface toward a base side, and a plurality of protrusions formed at intervals in the circumferential direction on the outer periphery of the boss and extending from the opposite surface along the protruding direction of the boss. Specific examples of the resin molded product will be described below with reference to the drawings, but the present disclosure is not limited thereto.
本実施形態の樹脂成形品２０は、図３に示されるように、車両の一例である自動車の内装部品として用いられる。具体的には、樹脂成形品２０は、自動車のインナーパネル、特に、バックドアのインナーパネルとして用いられる。 As shown in FIG. 3, the resin molded product 20 of this embodiment is used as an interior part of an automobile, which is an example of a vehicle. Specifically, the resin molded product 20 is used as an inner panel of the automobile, in particular, the inner panel of the back door.
本実施形態の樹脂成形品２０は、樹脂の一体成形品であり、図１及び図２に示されるように、本体部２２と、ボス部２４と、突部の一例としてのリブ部２６と、を有している。 The resin molded product 20 of this embodiment is a one-piece resin molded product, and as shown in Figures 1 and 2, has a main body portion 22, a boss portion 24, and a rib portion 26 as an example of a protrusion.
（本体部）
本体部２２は、図２に示されるように、板状とされており、厚み方向の一方側の面が意匠面２２Ａとされている。また、本体部２２の厚み方向の他方側の面は、意匠面２２Ａと反対側の反対面２２Ｂとされている。なお、樹脂成形品２０をバックドアのインナーパネルとして用いた場合に、本体部２２の意匠面２２Ａは、車室内側に位置する面であり、反対面２２Ｂは、車室外側に位置する面である。
(Main body)
2, the main body 22 is plate-shaped, and one surface in the thickness direction is a design surface 22A. The other surface in the thickness direction of the main body 22 is an opposite surface 22B opposite to the design surface 22A. When the resin molded product 20 is used as an inner panel of a back door, the design surface 22A of the main body 22 is a surface located on the inside of the vehicle compartment, and the opposite surface 22B is a surface located on the outside of the vehicle compartment.
（ボス部）
ボス部２４は、図１及び図２に示されるように、本体部２２の反対面から突出する柱状部分である。なお、本実施形態のボス部２４は、略円柱状とされている。また、ボス部２４の頂面２４Ａには、頂面２４Ａから根元２４Ｂ側に向けて中空部２５が形成されている。この中空部２５は、ボス部２４を頂面２４Ａ側から見て、略円形状とされている。なお、図２ではボス部２４の突出方向を矢印Ｐで示し、図１ではボス部２４の周方向を矢印Ｃで示している。
(Boss part)
As shown in Fig. 1 and Fig. 2, the boss portion 24 is a columnar portion protruding from the opposite surface of the main body portion 22. The boss portion 24 in this embodiment is substantially cylindrical. A hollow portion 25 is formed in the top surface 24A of the boss portion 24 from the top surface 24A toward the base 24B. This hollow portion 25 is substantially circular when the boss portion 24 is viewed from the top surface 24A side. The protruding direction of the boss portion 24 is indicated by an arrow P in Fig. 2, and the circumferential direction of the boss portion 24 is indicated by an arrow C in Fig. 1.
（リブ部）
リブ部２６は、図１及び図２に示されるように、ボス部２４の外周に周方向に間隔をあけて複数形成されている。具体的には、これらのリブ部２６は、ボス部２４の外周に周方向に等間隔で形成されている。なお、本実施形態では、ボス部２４にリブ部２６が８本形成されている。また、本実施形態では、リブ部２６が一定厚みの板状とされている。
(Rib section)
1 and 2, a plurality of rib portions 26 are formed at intervals in the circumferential direction on the outer periphery of the boss portion 24. Specifically, these rib portions 26 are formed at equal intervals in the circumferential direction on the outer periphery of the boss portion 24. In this embodiment, eight rib portions 26 are formed on the boss portion 24. In this embodiment, the rib portions 26 are formed in the shape of a plate with a constant thickness.
これらのリブ部２６は、ボス部２４の外周面からボス部２４の径方向へ突出すると共に反対面２２Ｂからボス部２４の突出方向に沿って延びている。なお、本実施形態では、図２に示されるように、リブ部２６は、反対面２２Ｂからボス部２４の頂面２４Ａまで延びている。 These ribs 26 protrude from the outer peripheral surface of the boss 24 in the radial direction of the boss 24 and extend from the opposite surface 22B along the protruding direction of the boss 24. In this embodiment, as shown in FIG. 2, the ribs 26 extend from the opposite surface 22B to the top surface 24A of the boss 24.
また、リブ部２６におけるボス部２４と反対側の側面２６Ａの少なくとも一部（本実施形態では側面２６Ａ全体）が、ボス部２４の根元２４Ｂ側から頂面２４Ａ側に向けてボス部２４の外周面２４Ｃからの距離Ｌが次第に短くなるように傾斜している。 In addition, at least a portion of the side surface 26A of the rib portion 26 opposite the boss portion 24 (in this embodiment, the entire side surface 26A) is inclined so that the distance L from the outer peripheral surface 24C of the boss portion 24 gradually decreases from the base 24B side of the boss portion 24 toward the top surface 24A side.
また、図１及び図２に示されるように、ボス部２４の厚みＴ１は、リブ部２６の厚みＴ２よりも厚い。そして、ボス部２４の厚みＴ１は、中空部２５の頂面２４Ａにおける開口の幅Ｗ以下である。 As shown in Figs. 1 and 2, the thickness T1 of the boss portion 24 is thicker than the thickness T2 of the rib portion 26. The thickness T1 of the boss portion 24 is equal to or smaller than the width W of the opening at the top surface 24A of the hollow portion 25.
図３に示されるように、本実施形態のボス部２４は、車両用部品、例えば、バックドア用の内蔵部品（一例として、補強部材）３２を樹脂成形品２０に締結固定するための部分である。このボス部２４の中空部２５に、ねじ部材２８のねじ部２８Ａが捩じ込まれることで、ねじ部２８Ａの雄ねじの形状に対応する雌ねじが中空部２５の内周面に形成されて、ねじ部材２８を介して内蔵部品３２がボス部２４に締結固定される。ここで、ボス部２４の厚みＴ１は、ねじ部材２８の呼び径Ｄ以下である。なお、ここでいう、ねじ部材２８の呼び径Ｄとは、ねじ部２８Ａにおけるねじ山の外径（直径）を指す。また、本実施形態では、ねじ部材２８としてタッピングねじを用いている。 3, the boss portion 24 of this embodiment is a portion for fastening and fixing a vehicle part, for example, an internal part (for example, a reinforcing member) 32 for a back door to the resin molded product 20. When the threaded portion 28A of the screw member 28 is screwed into the hollow portion 25 of the boss portion 24, a female thread corresponding to the shape of the male thread of the threaded portion 28A is formed on the inner peripheral surface of the hollow portion 25, and the internal part 32 is fastened and fixed to the boss portion 24 via the screw member 28. Here, the thickness T1 of the boss portion 24 is equal to or smaller than the nominal diameter D of the screw member 28. Note that the nominal diameter D of the screw member 28 here refers to the outer diameter (diameter) of the thread in the threaded portion 28A. In addition, in this embodiment, a tapping screw is used as the screw member 28.
なお、本実施形態における内蔵部品３２は、バックドアを構成するインナーパネルとしての樹脂成形品２０とアウターパネル３０との間に配置されるようになっている。 In this embodiment, the built-in component 32 is arranged between the resin molded part 20, which serves as the inner panel that constitutes the tailgate, and the outer panel 30.
また、ボス部２４に形成された全てのリブ部２６は、同一寸法形状とされている。 In addition, all of the rib portions 26 formed on the boss portion 24 have the same dimensions and shape.
次に本実施形態の作用並びに効果について説明する。
本実施形態の樹脂成形品２０では、ボス部２４の外周に、周方向に間隔をあけて本体部２２の反対面２２Ｂからボス部２４の突出方向に沿って延びる複数のリブ部２６を形成していることから、ボス部２４の強度が向上する。このように、ボス部２４に複数のリブ部２６を形成することで、ボス部２４の厚みＴ１を薄くして、ボス部２４の根元２４Ｂにおける本体部２２の反対面２２Ｂとの接触面積（境界の面積）及びボス部２４の体積を減少させても、ボス部２４の強度を確保することができる。ボス部２４の強度が確保されることで、ボス部２４の破損を抑制することができる。
また、ボス部２４の厚みＴ１を薄くすることで、ボス部２４の根元２４Ｂにおける本体部２２の反対面２２Ｂとの接触面積（境界の面積）及びボス部２４の体積が減少するため、樹脂材料の収縮が減少する。これにより、意匠面２２Ａにおけるボス部２４に対応する部分に、樹脂材料の収縮によるヒケが発生するのが抑制される。
Next, the operation and effects of this embodiment will be described.
In the resin molded product 20 of this embodiment, a plurality of rib portions 26 are formed on the outer periphery of the boss portion 24 at intervals in the circumferential direction, extending from the opposite surface 22B of the main body portion 22 along the protruding direction of the boss portion 24, thereby improving the strength of the boss portion 24. By forming a plurality of rib portions 26 on the boss portion 24 in this manner, the strength of the boss portion 24 can be ensured even if the thickness T1 of the boss portion 24 is reduced and the contact area (boundary area) between the base 24B of the boss portion 24 and the opposite surface 22B of the main body portion 22 and the volume of the boss portion 24 are reduced. By ensuring the strength of the boss portion 24, damage to the boss portion 24 can be suppressed.
Furthermore, by reducing the thickness T1 of the boss portion 24, the contact area (boundary area) between the base 24B of the boss portion 24 and the opposite surface 22B of the main body portion 22 and the volume of the boss portion 24 are reduced, thereby reducing the shrinkage of the resin material. This suppresses the occurrence of sink marks due to shrinkage of the resin material in the portion of the design surface 22A corresponding to the boss portion 24.
また、樹脂成形品２０では、ボス部２４の外周に周方向に等間隔でリブ部２６を形成した場合、ボス部２４の径方向に対するボス部２４の強度を均一に確保することができる。 In addition, in the resin molded product 20, when the rib portions 26 are formed at equal intervals in the circumferential direction on the outer periphery of the boss portion 24, the strength of the boss portion 24 in the radial direction of the boss portion 24 can be ensured uniformly.
そして、樹脂成形品２０では、複数のリブ部２６を同一寸法形状とした場合、ボス部２４の径方向に対するボス部２４の強度をさらに均一に確保することができる。 In addition, in the resin molded product 20, if the multiple rib portions 26 are made to have the same dimensions and shape, the strength of the boss portion 24 in the radial direction of the boss portion 24 can be ensured to be even more uniform.
また、樹脂成形品２０では、ボス部２４の厚みＴ１をリブ部２６の厚みＴ２よりも厚くした場合、ボス部２４の中空部２５にねじ部材２８を捩じ込んだときのボス部２４の破損を抑制することができる。 In addition, in the resin molded product 20, if the thickness T1 of the boss portion 24 is made thicker than the thickness T2 of the rib portion 26, damage to the boss portion 24 when the screw member 28 is screwed into the hollow portion 25 of the boss portion 24 can be suppressed.
また、樹脂成形品２０では、リブ部２６を本体部２２の反対面２２Ｂから頂面２４Ａまで延ばした場合、ボス部２４の強度が、根元２４Ｂから頂面２４Ａに亘って安定して確保される。 In addition, in the resin molded product 20, when the rib portion 26 is extended from the opposite surface 22B of the main body portion 22 to the top surface 24A, the strength of the boss portion 24 is stably ensured from the base 24B to the top surface 24A.
また、樹脂成形品２０では、ボス部２４の厚みＴ１を中空部２５の頂面２４Ａにおける開口の幅Ｗ以下とした場合、ボス部２４と本体部２２との接触面積及びボス部２４の体積を十分に減少させられるため、意匠面２２Ａにおけるボス部２４に対応する部分にヒケが発生するのがさらに抑制される。 In addition, in the resin molded product 20, when the thickness T1 of the boss portion 24 is set to be equal to or less than the width W of the opening at the top surface 24A of the hollow portion 25, the contact area between the boss portion 24 and the main body portion 22 and the volume of the boss portion 24 can be sufficiently reduced, further suppressing the occurrence of sink marks in the portion of the design surface 22A corresponding to the boss portion 24.
また、樹脂成形品２０では、ボス部２４の厚みＴ１をねじ部材２８の呼び径Ｄ以下にした場合、ボス部２４と本体部２２との接触面積及びボス部２４の体積を十分に減少させられるため、意匠面２２Ａにおけるボス部２４に対応する部分にヒケが発生するのがさらに抑制される。 In addition, in the resin molded product 20, when the thickness T1 of the boss portion 24 is set to be equal to or less than the nominal diameter D of the screw member 28, the contact area between the boss portion 24 and the main body portion 22 and the volume of the boss portion 24 can be sufficiently reduced, further suppressing the occurrence of sink marks in the portion of the design surface 22A corresponding to the boss portion 24.
さらに、樹脂成形品２０では、リブ部２６におけるボス部２４と反対側の側面２６Ａの少なくとも一部をボス部２４の根元２４Ｂ側から頂面２４Ａ側に向けてボス部２４の外周面からの距離Ｌが次第に短くなるように傾斜させた場合、リブ部２６の側面２６Ａの傾斜部分による成形型の脱型が容易になる。 Furthermore, in the resin molded product 20, if at least a portion of the side surface 26A of the rib portion 26 opposite the boss portion 24 is inclined so that the distance L from the outer peripheral surface of the boss portion 24 gradually decreases from the base 24B side of the boss portion 24 toward the top surface 24A side, the inclined portion of the side surface 26A of the rib portion 26 makes it easier to remove from the molding die.
そして、ボス部２４の強度が確保されると共に意匠面２２Ａにおけるボス部２４に対応する部分にヒケが発生するのが抑制された樹脂成形品２０を自動車用の内装部品であるインナーパネルとして用いることで、自動車の重量を軽減することができ、燃費を改善することが可能となる。 The resin molded product 20, in which the strength of the boss portion 24 is ensured and the occurrence of sink marks in the portion of the design surface 22A corresponding to the boss portion 24 is suppressed, can be used as an inner panel, which is an interior part for an automobile, thereby reducing the weight of the automobile and improving fuel efficiency.
［その他の実施形態］
前述の実施形態では、リブ部２６が本体部２２の反対面２２Ｂからボス部２４の頂面２４Ａまで延びているが、本開示はこの構成に限定されない。例えば、図４及び図５に示されるボス部４０のように、リブ部４２が本体部２２の反対面２２Ｂからボス部４０の頂面４０Ａ近傍まで延びていればよい。なお、ボス部４０では、突出方向の長さが、リブ部４２の長さよりも若干長くなっている。
[Other embodiments]
In the above-described embodiment, the rib portion 26 extends from the opposite surface 22B of the main body portion 22 to the top surface 24A of the boss portion 24, but the present disclosure is not limited to this configuration. For example, as in the boss portion 40 shown in Figures 4 and 5, it is sufficient that the rib portion 42 extends from the opposite surface 22B of the main body portion 22 to near the top surface 40A of the boss portion 40. Note that the length of the boss portion 40 in the protruding direction is slightly longer than the length of the rib portion 42.
前述の実施形態では、ボス部２４に形成された全てのリブ部２６を同一寸法形状としているが、本開示はこの構成に限定されない。図６のボス部５０のように、ボス部５０の外周面からの距離をリブ部５２Ａよりもリブ部５２Ｂで長くしてもよい。例えば、内蔵部品３２をボス部５０に締結固定した場合に、内蔵部品３２からの負荷（荷重）が作用する方向に対応するリブ部５２の長さを延ばすことで、荷重が作用する方向のボス部２４の強度を効果的に確保できるようになる。 In the above embodiment, all of the rib portions 26 formed on the boss portion 24 have the same dimensions and shape, but the present disclosure is not limited to this configuration. As in the boss portion 50 of FIG. 6, the distance from the outer peripheral surface of the boss portion 50 may be longer for the rib portion 52B than for the rib portion 52A. For example, when the built-in component 32 is fastened and fixed to the boss portion 50, the strength of the boss portion 24 in the direction in which the load (weight) from the built-in component 32 acts can be effectively ensured by extending the length of the rib portion 52 corresponding to the direction in which the load (weight) from the built-in component 32 acts.
前述の実施形態では、リブ部２６におけるボス部２４と反対側の側面２６Ａの全体が、ボス部２４の根元２４Ｂ側から頂面２４Ａ側に向けて距離Ｌが次第に短くなるように傾斜しているが本開示はこの構成に限定されない。例えば、図７に示されるボス部６０のように、ボス部６０に形成されたリブ部６２の側面６２Ａのうち、少なくとも一部（図７では、ボス部２４の突出方向の中間部分）６２Ｂが傾斜していれば、脱型が容易になる効果が得られる。 In the above embodiment, the entire side surface 26A of the rib portion 26 opposite the boss portion 24 is inclined so that the distance L gradually decreases from the base 24B side of the boss portion 24 toward the top surface 24A side, but the present disclosure is not limited to this configuration. For example, as in the boss portion 60 shown in FIG. 7, if at least a portion 62B (the middle portion in the protruding direction of the boss portion 24 in FIG. 7) of the side surface 62A of the rib portion 62 formed in the boss portion 60 is inclined, the effect of making demolding easier can be obtained.
前述の実施形態では、ボス部２４を、略円柱状に形成しているが、本開示はこの構成に限定されない。例えば、図８に示されるボス部７０のように、略多角柱状に形成してもよい。なお、図８のボス部７０は、平面視で略正六角形状に形成されている。また、ボス部を略楕円形状に形成してもよい。また、図９に示されるボス部７２のように、平面視で、略星形の柱状に形成してもよい。ボス部７２では、リブ部７４がボス部７２の外周から径方向外側に向けて厚みが薄くなっている。 In the above embodiment, the boss portion 24 is formed in a generally cylindrical shape, but the present disclosure is not limited to this configuration. For example, it may be formed in a generally polygonal prism shape, as in the boss portion 70 shown in FIG. 8. Note that the boss portion 70 in FIG. 8 is formed in a generally regular hexagonal shape in plan view. The boss portion may also be formed in a generally elliptical shape. It may also be formed in a generally star-shaped prism shape in plan view, as in the boss portion 72 shown in FIG. 9. In the boss portion 72, the rib portion 74 becomes thinner from the outer periphery of the boss portion 72 toward the radially outward direction.
前述の実施形態では、ボス部２４の突出方向が本体部２２の反対面２２Ｂに対して直交する方向であったが、本開示はこの構成に限定されない。例えば、図１０に示されるボス部８０のように、本体部２２の反対面２２Ｂが傾斜しており、この反対面２２Ｂからボス部８０が反対面２２Ｂと直交する方向ではなく、斜め方向に延びていてもよい。 In the above embodiment, the boss portion 24 protrudes in a direction perpendicular to the opposite surface 22B of the main body portion 22, but the present disclosure is not limited to this configuration. For example, as in the boss portion 80 shown in FIG. 10, the opposite surface 22B of the main body portion 22 may be inclined, and the boss portion 80 may extend from the opposite surface 22B in an oblique direction rather than perpendicular to the opposite surface 22B.
前述の実施形態では、ボス部２４に対して８本のリブ部２６を形成しているが、本開示はこの構成に限定されない。ボス部２４に対するリブ部２６の数は、２本以上であればよいが、ボス部２４に作用する荷重に耐える観点で４本以上、好ましくは８本とすることが好ましい。 In the above-described embodiment, eight rib portions 26 are formed on the boss portion 24, but the present disclosure is not limited to this configuration. The number of rib portions 26 on the boss portion 24 may be two or more, but it is preferable to have four or more, and preferably eight, in terms of withstanding the load acting on the boss portion 24.
前述の実施形態では、ボス部２４の中空部２５に、タッピングねじとしてのねじ部材２８を捩じ込むことで、ねじ部材２８を介してボス部２４に内蔵部品３２を締結固定する構成としているが本開示はこの構成に限定されない。ボス部２４の中空部２５の内周面に、内面に雌ねじが形成された筒体を埋め込んでおいて、この筒体の雌ねじにねじ部材２８のねじ部２８Ａを捩じ込むことで、ねじ部材２８を介してボス部２４に内蔵部品３２を締結固定する構成としてもよい。 In the above embodiment, the screw member 28 as a tapping screw is screwed into the hollow portion 25 of the boss portion 24, and the built-in component 32 is fastened to the boss portion 24 via the screw member 28, but the present disclosure is not limited to this configuration. A cylindrical body having a female thread formed on its inner surface may be embedded in the inner peripheral surface of the hollow portion 25 of the boss portion 24, and the threaded portion 28A of the screw member 28 may be screwed into the female thread of this cylindrical body, thereby fastening the built-in component 32 to the boss portion 24 via the screw member 28.
以上、本開示の好適な実施形態について説明したが、本開示は必ずしも上述した実施形態に限定されるものではなく、その趣旨を逸脱しない範囲で適宜変更を行ってもよい。 The above describes preferred embodiments of the present disclosure, but the present disclosure is not necessarily limited to the above-described embodiments, and appropriate modifications may be made without departing from the spirit of the present disclosure.
２０ 樹脂成形品
２２ 本体部
２２Ａ 意匠面
２２Ｂ 反対面
２４ ボス部
２４Ａ 頂面
２４Ｂ 根元
２４Ｃ 外周面
２５ 中空部
２６ リブ部
２６Ａ 側面
２８ ねじ部材
４０ ボス部
４２ リブ部
５０ ボス部
５２ リブ部
６２ リブ部
７０ ボス部
７２ リブ部
７４ リブ部
Ｃ ボス部の周方向
Ｐ ボス部の突出方向
Ｄ ねじ部材の呼び径
Ｌ 突部側面のボス部外周面からの距離
Ｗ 中空部の開口幅
Ｔ１ ボス部の厚み
Ｔ２ 突部の厚み
20 Resin molded product 22 Main body 22A Design surface 22B Opposite surface 24 Boss portion 24A Top surface 24B Base 24C Outer circumferential surface 25 Hollow portion 26 Rib portion 26A Side surface 28 Screw member 40 Boss portion 42 Rib portion 50 Boss portion 52 Rib portion 62 Rib portion 70 Boss portion 72 Rib portion 74 Rib portion C Circumferential direction of boss portion P Protruding direction of boss portion D Nominal diameter of screw member L Distance from outer circumferential surface of boss portion to side surface of protrusion portion W Opening width of hollow portion T1 Thickness of boss portion T2 Thickness of protrusion portion
Claims (7)
意匠面と反対面とを有する本体部と、
前記本体部の前記反対面から突出すると共に頂面から根元側に向けて中空部が形成されたボス部と、
前記ボス部の外周に周方向に間隔をあけて形成され、前記反対面から前記ボス部の突出方向で前記ボス部の前記頂面の位置まで延びる複数の突部と、
を備え、
前記突部における前記ボス部と反対側の側面は、前記ボス部の突出方向で前記根元側に位置する部分及び前記頂面側に位置する部分がそれぞれ前記ボス部の突出方向に沿って延びると共に、前記根元側に位置する部分と前記頂面側に位置する部分との間の中間部分が前記ボス部の突出方向に向けて前記ボス部の外周面からの距離が次第に短くなるように傾斜しながら延びる、樹脂成形品。 A resin molded product for a vehicle,
A main body portion having a design surface and an opposite surface;
a boss portion protruding from the opposite surface of the body portion and having a hollow portion formed from a top surface toward a base side;
a plurality of protrusions formed at intervals in a circumferential direction on an outer periphery of the boss portion and extending from the opposite surface to a position of the top surface of the boss portion in a protruding direction of the boss portion ;
Equipped with
A resin molded product in which the side of the protrusion opposite the boss portion has a portion located on the root side in the protruding direction of the boss portion and a portion located on the top side, which each extend along the protruding direction of the boss portion, and an intermediate portion between the portion located on the root side and the portion located on the top side extends at an angle such that the distance from the outer peripheral surface of the boss portion gradually decreases toward the protruding direction of the boss portion .
前記ボス部の厚みが、前記ねじ部材の呼び径以下である、請求項１～請求項３のいずれか１項に記載の樹脂成形品。 A screw member is screwed into the hollow portion,
The resin molded product according to any one of claims 1 to 3 , wherein a thickness of the boss portion is equal to or smaller than a nominal diameter of the screw member.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006175708A (en) | 2004-12-22 | 2006-07-06 | Gp Daikyo Corp | Plastic molded product |
| JP2008142973A (en) | 2006-12-07 | 2008-06-26 | Inoac Corp | Method for manufacturing vehicle interior member |
| JP2015071375A (en) | 2013-10-03 | 2015-04-16 | 三井化学株式会社 | Automotive back door and manufacturing method of automotive back door |
| JP2017193106A (en) | 2016-04-20 | 2017-10-26 | 豊田合成株式会社 | Foamed resin molding |
| JP2019181875A (en) | 2018-04-16 | 2019-10-24 | トヨタ紡織株式会社 | Form block and production method of foam resin molded product |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3975611A (en) * | 1969-12-01 | 1976-08-17 | Trw Inc. | Trim fastening |
| JPS6062610U (en) * | 1983-10-07 | 1985-05-01 | 日立化成工業株式会社 | Connection structure between plastic molded products and mounting parts |
| DE3517620C2 (en) * | 1984-05-19 | 1996-07-18 | Emhart Ind | Plastic clip |
| RU2118264C1 (en) * | 1996-04-29 | 1998-08-27 | Акционерное общество "АвтоВАЗ" | Vehicle moulding attachment unit |
| JP2013061036A (en) * | 2011-09-14 | 2013-04-04 | Nifco Inc | Fastener |
| CN104379338B (en) * | 2012-03-07 | 2018-03-16 | 丰田铁工株式会社 | Overlap composite inner decoration part |
| RU132764U1 (en) * | 2012-12-18 | 2013-09-27 | Открытое акционерное общество "АВТОВАЗ" (ОАО "АВТОВАЗ") | VEHICLE MOLDING ASSEMBLY ASSEMBLY |
-
2020
- 2020-03-06 JP JP2020039231A patent/JP7512617B2/en active Active
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2021
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006175708A (en) | 2004-12-22 | 2006-07-06 | Gp Daikyo Corp | Plastic molded product |
| JP2008142973A (en) | 2006-12-07 | 2008-06-26 | Inoac Corp | Method for manufacturing vehicle interior member |
| JP2015071375A (en) | 2013-10-03 | 2015-04-16 | 三井化学株式会社 | Automotive back door and manufacturing method of automotive back door |
| JP2017193106A (en) | 2016-04-20 | 2017-10-26 | 豊田合成株式会社 | Foamed resin molding |
| JP2019181875A (en) | 2018-04-16 | 2019-10-24 | トヨタ紡織株式会社 | Form block and production method of foam resin molded product |
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