JPS6144063B2 - - Google Patents
Info
- Publication number
- JPS6144063B2 JPS6144063B2 JP55051010A JP5101080A JPS6144063B2 JP S6144063 B2 JPS6144063 B2 JP S6144063B2 JP 55051010 A JP55051010 A JP 55051010A JP 5101080 A JP5101080 A JP 5101080A JP S6144063 B2 JPS6144063 B2 JP S6144063B2
- Authority
- JP
- Japan
- Prior art keywords
- molding
- molded product
- groove
- undercut
- elastic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Molding Of Porous Articles (AREA)
- Steering Controls (AREA)
- Laminated Bodies (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
この発明は、弾性体成形品にアンダーカツト部
を利用してモールを嵌装した弾性体成形品とその
製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an elastic molded product in which a molding is fitted using an undercut portion, and a method for manufacturing the same.
従来、ステアリングホイールなどの弾性体成形
品に装飾用のモールを嵌装する場合、弾性体成形
品にほぼモールと同じ形状の溝を形成し、その溝
に接着剤、粘着テープ、又は溶剤浸漬を使つてモ
ールを嵌め込み、固着していた。 Conventionally, when fitting a decorative molding to an elastic molded product such as a steering wheel, a groove of approximately the same shape as the molding is formed in the elastic molded product, and the groove is filled with adhesive, adhesive tape, or solvent-dipped. I used it to fit the molding and it was stuck.
したがつて、接着強度のバラツキにより、温度
変化の繰り返し時にモールが成形品から離脱した
り、接着剤がはみ出して外観を損う問題があり、
さらに、モールを成形品に密着固定するために、
モールが硬質であつたり、モールに金属光輝部が
取付けられ剛性がある場合には、弾性体成形品を
握つた際にモールと成形品に異和感があり、ソフ
トな感触が損われる欠点があつた。 Therefore, due to variations in adhesive strength, there is a problem that the molding may separate from the molded product during repeated temperature changes, or the adhesive may protrude, damaging the appearance.
Furthermore, in order to tightly fix the molding to the molded product,
If the molding is hard or has a metallic shiny part attached to it and is rigid, when you hold the elastic molded product, the molding and the molded product will feel strange, and the soft feel will be lost. It was hot.
この発明は上記の点に着目し、モールを接着剤
を使用せずに取付けられ、握つた際にソフトな感
触が得られ、弾性体成形品とモールに一体感のあ
るフイーリングが得られる弾性体成形品とその製
造方法を提供することを目的とし、このために、
アンダーカツトをもつ軟質部材を金型コアとして
発泡又は軟質の弾性体を注入成形し、弾性体から
軟質部材を取外してアンダーカツト部をもつ溝を
形成し、溝の内部に中空部を残しながらアンダー
カツト部に装飾用のモールを嵌装するように構成
したものである。 Focusing on the above points, this invention is an elastic material that allows the molding to be attached without using adhesive, provides a soft feel when gripped, and provides a feeling of unity between the elastic molded product and the molding. The purpose is to provide molded products and their manufacturing methods, and for this purpose,
A soft member with an undercut is used as a mold core, and a foamed or soft elastic body is injection molded, the soft member is removed from the elastic body to form a groove with an undercut, and the undercut is formed while leaving a hollow part inside the groove. It is constructed so that a decorative molding is fitted into the cut portion.
以下、この発明を自動車のステアリングホイー
ルに適用した実施例を図面に基づいて説明する。
第１図は成形品として内部発泡ウレタンで芯金を
被覆したステアリングホイールを成形する際の断
面を示している。成形に際し、先ず、金型２に、
軟質ポリ塩化ビニル樹脂により形成した両側にア
ンダーカツトをもつ軟質部材１を全周にセツト
し、次に、芯金３をセツトした後、製品部にウレ
タン材料を注入成形して発泡固化させる。そし
て、金型２より軟質部材１と共に弾性体成形品４
を離型し、その後、軟質部材１を弾性体成形品４
から引抜いて、第２図のように、２段のアンダー
カツト部５をもつ溝６を成形品の全周にわたつて
形成する。この時、金型コアが軟質部材であるた
め、引抜きの際にアンダーカツト部５の周囲を破
損することなく容易に溝６が形成できる。 Hereinafter, an embodiment in which the present invention is applied to a steering wheel of an automobile will be described based on the drawings.
FIG. 1 shows a cross section of a steering wheel whose core metal is covered with internally foamed urethane as a molded product. When molding, first, in the mold 2,
A soft member 1 made of soft polyvinyl chloride resin and having undercuts on both sides is set around the entire circumference, then a core bar 3 is set, and then a urethane material is injected into the product part and foamed and solidified. Then, from the mold 2, the elastic body molded product 4 is removed together with the soft member 1.
is released from the mold, and then the soft member 1 is molded into an elastic body molded product 4.
As shown in FIG. 2, a groove 6 with a two-stage undercut portion 5 is formed around the entire circumference of the molded product. At this time, since the mold core is a soft member, the groove 6 can be easily formed without damaging the periphery of the undercut portion 5 during drawing.
なお、必要に応じ軟質部材１に離型材を塗布し
成形品からコアとしての軟質部材の引抜きをより
容易にすることができる。 Note that, if necessary, a mold release agent can be applied to the soft member 1 to make it easier to pull out the soft member as a core from the molded product.
次に、第３図に示すように、弾性体成形品４の
溝６の中間以上のアンダーカツト部に嵌合するよ
うに、硬質又は軟質ポリ塩化ビニル樹脂のモール
７が別途に成形され、この装飾用モール７が弾性
体成形品４の溝６に第４図の如く、下部に中空部
８を残した状態で中間より上のアンダーカツト部
５と係合するよう押し込まれて嵌装される。 Next, as shown in FIG. 3, a molding 7 made of hard or soft polyvinyl chloride resin is separately molded so as to fit into the undercut part above the middle of the groove 6 of the elastic molded product 4. The decorative molding 7 is pushed into the groove 6 of the elastic molded product 4 and fitted into the groove 6 of the elastic molded product 4, leaving a hollow part 8 at the bottom so as to engage with the undercut part 5 above the middle, as shown in FIG. .
このように内部に中空部８を残してモール７を
溝６に嵌装したステアリングホイールは、握つた
際、モールの箇所にも適度な弾性が付与され、モ
ールの異和感は生じない。また、このモールは接
着剤等を使用せず嵌着固定することができる。 In the steering wheel in which the molding 7 is fitted into the groove 6 while leaving the hollow part 8 inside, when the steering wheel is gripped, appropriate elasticity is imparted to the part of the molding, and the molding does not give a strange feeling. Further, this molding can be fitted and fixed without using adhesive or the like.
なお、第５図と第６図はこの発明の他の実施例
を示すもので、第５図の溝９は下部に１箇所のア
ンダーカツト部を、さらに底部に３本のリブ１０
を備え、モール１１がリブ１０の上に載り、アン
ダーカツト部に嵌合されるように装着することも
できる。また、第６図のように、下部にアンダー
カツト部を備えた溝１２を形成し、底部に２本の
リブ１３を備えたモール１４をこの溝１２に嵌め
込むように嵌装することもできる。なおモールの
装着に際してモールに剛性がある場合、適当な治
具を使用して溝を押し広げながらモールを全周に
わたつてずらすことにより容易に装着することが
できる。 5 and 6 show other embodiments of the present invention, and the groove 9 in FIG. 5 has one undercut portion at the bottom and three ribs 10 at the bottom.
It is also possible to install the molding 11 so that it rests on the rib 10 and fits into the undercut part. Alternatively, as shown in FIG. 6, a groove 12 having an undercut portion at the bottom may be formed, and a molding 14 having two ribs 13 at the bottom may be fitted into this groove 12. . When installing the molding, if the molding is rigid, it can be easily installed by using a suitable jig to spread the groove and shift the molding around the entire circumference.
以上のように、この発明によれば、アンダーカ
ツトをもつ軟質部材を金型コアとして発泡又は軟
質の弾性体を注入成形し、弾性体から軟質部材を
取外してアンダーカツト部をもつ溝を形成し、溝
の内部に中空部を残しながらアンダーカツト部に
装飾用のモールを嵌装するように構成したから、
弾性体の成形時に金型コアとして軟質部材を使用
したため、分離の際に変形が容易で弾性体成形品
に損傷を生じさせない。さらに、モールの材質が
硬質樹脂や金属光輝部材などの剛体であつても、
中空部やリブのたわみにより、弾性体成形品を握
つた場合、モールの部分にも弾性効果が容易に得
られ、弾性体成形品とモールに異和感の生じない
ソフトな感触をもたらすことができる。 As described above, according to the present invention, a foamed or soft elastic body is injection molded using a soft member having an undercut as a mold core, and a groove having an undercut portion is formed by removing the soft member from the elastic body. , since the structure is such that the undercut part is fitted with a decorative molding while leaving a hollow part inside the groove.
Since a soft member is used as the mold core when molding the elastic body, it is easily deformed during separation and does not cause damage to the elastic molded product. Furthermore, even if the material of the molding is a rigid body such as hard resin or shiny metal material,
Due to the bending of the hollow part and ribs, when the elastic molded product is grasped, elasticity can easily be obtained in the molding part, resulting in a soft feel that does not cause discomfort between the elastic molded product and the molding. can.
図はこの発明の実施例を示し、第１図は成形用
金型により成形した弾性体成形品（ステアリング
ホイール）の断面図、第２図は成形後に金型コア
を引き抜いた状態の弾性体成形品の断面図、第３
図はモールの斜視図、第４図はモールを嵌装した
弾性体成形品の断面図、第５図と第６図は他の実
施例の弾性体成形品の断面図である。
１……金型コア、４……弾性体成形品、５……
アンダーカツト部、６……溝、７……モール、８
……中空部。
The figures show an embodiment of the present invention. Figure 1 is a cross-sectional view of an elastic molded product (steering wheel) formed by a molding die, and Figure 2 is a molded elastic body with the mold core pulled out after molding. Cross-sectional view of the product, 3rd
The figure is a perspective view of a molding, FIG. 4 is a cross-sectional view of an elastic molded product fitted with a molding, and FIGS. 5 and 6 are cross-sectional views of elastic molded products of other embodiments. 1...Mold core, 4...Elastic body molded product, 5...
Undercut portion, 6...Groove, 7...Mall, 8
...Hollow part.
Claims (1)
形成され、該溝の内部に中空部を残しながら該ア
ンダーカツト部に装飾用のモールが嵌装されたこ
とを特徴とするモールを有する弾性体成形品。 ２ アンダーカツトをもつ軟質部材を金型コアと
して金型内にセツトし、発泡又は軟質の合成樹脂
を該金型内に注入成形し、成形された該弾性体か
ら該軟質部材を取り外してアンダーカツト部をも
つ溝を形成し、該溝の内部に中空部を残しながら
該アンダーカツト部に装飾用のモールを嵌装する
ことを特徴とするモールを有する弾性体成形品の
製造方法。[Claims] 1. A groove having an undercut portion is formed in the elastic molded product, and a decorative molding is fitted into the undercut portion while leaving a hollow portion inside the groove. An elastic molded product with a molding. 2. A soft member with an undercut is set in a mold as a mold core, foamed or soft synthetic resin is injected into the mold, and the soft member is removed from the molded elastic body to form the undercut. 1. A method for producing an elastic molded product having a molding, the method comprising: forming a groove having a section, and fitting a decorative molding into the undercut portion while leaving a hollow portion inside the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5101080A JPS56146753A (en) | 1980-04-17 | 1980-04-17 | Elastic body molding having lace and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5101080A JPS56146753A (en) | 1980-04-17 | 1980-04-17 | Elastic body molding having lace and its manufacture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56146753A JPS56146753A (en) | 1981-11-14 |
| JPS6144063B2 true JPS6144063B2 (en) | 1986-10-01 |
Family
ID=12874802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5101080A Granted JPS56146753A (en) | 1980-04-17 | 1980-04-17 | Elastic body molding having lace and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56146753A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4551895A (en) * | 1982-10-25 | 1985-11-12 | Hiroshi Teramachi | Method of making a linear slide ball bearing |
| JPS6019532A (en) * | 1983-07-13 | 1985-01-31 | 西川ゴム工業株式会社 | Manufacture of laminated board |
| JPS61249870A (en) * | 1985-04-30 | 1986-11-07 | Toyoda Gosei Co Ltd | Steering wheel provided with molding |
| JP6681569B2 (en) * | 2016-02-15 | 2020-04-15 | キョーラク株式会社 | Foam structure, resin panel |
| DE102021105844A1 (en) * | 2021-03-10 | 2022-09-15 | Fit Ag | Process for the production of an elastically deformable molded part |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5429428A (en) * | 1977-08-05 | 1979-03-05 | Inoue Gomu Kogyo Kk | Lace in synthetic resin |
-
1980
- 1980-04-17 JP JP5101080A patent/JPS56146753A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56146753A (en) | 1981-11-14 |
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