JPH1110676A - Hinge-like component and manufacture thereof - Google Patents

Hinge-like component and manufacture thereof

Info

Publication number
JPH1110676A
JPH1110676A JP16442397A JP16442397A JPH1110676A JP H1110676 A JPH1110676 A JP H1110676A JP 16442397 A JP16442397 A JP 16442397A JP 16442397 A JP16442397 A JP 16442397A JP H1110676 A JPH1110676 A JP H1110676A
Authority
JP
Japan
Prior art keywords
hinge
molded product
hole
mold
primary molded
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.)
Granted
Application number
JP16442397A
Other languages
Japanese (ja)
Other versions
JP3699564B2 (en
Inventor
Kentaro Hayashi
健太郎 林
Shiro Ezaki
史朗 江崎
Hideki Kokubu
秀樹 国分
Umeo Arao
梅男 荒尾
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tokai Rika Co Ltd
Original Assignee
Tokai Rika Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tokai Rika Co Ltd filed Critical Tokai Rika Co Ltd
Priority to JP16442397A priority Critical patent/JP3699564B2/en
Publication of JPH1110676A publication Critical patent/JPH1110676A/en
Application granted granted Critical
Publication of JP3699564B2 publication Critical patent/JP3699564B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0017—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor moulding interconnected elements which are movable with respect to one another, e.g. chains or hinges

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To facilitate the manufacture of a hinge-like component and permit the reduction of the number of parts. SOLUTION: A hinge-like component is manufactured employing a die 9 constituted of a stationary mold 9a and a movable mold 9b. The die 9 is provided with a first cavity 10, coping with the configuration of a component main body 2, and a second cavity 11, coping with the configuration of a lid 3. The movable mold 9b is provided with a slide core 13 projectable at a position coping with the tip end part in the second cavity 11. Resin is poured from a primary molding gate 14 into the second cavity 11 to mold the lid 3, having a hole, through injection molding. Subsequently, the slide core is retreated from the inside of the hole. Then, the component main body 2 is molded through injection molding to mold the same in a state where the shaft part of the component main body 2 is fitted into the hole of the lid 3.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、蝶番状部品及びそ
の製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinge-shaped part and a method for manufacturing the same.

【０００２】[0002]

【従来の技術】従来、例えば図６に示すように、蝶番状
部品５１として部品本体５２と、蓋５３と、部品本体５
２と蓋５３とをつなぐとともに蝶番の支軸としての役割
を果たすスプリングピン５４とを備えたものがある。こ
の部品本体５２及び蓋５３には、蝶番を構成する部分で
ある支持部５２ａ，５３ａが形成されている。そして、
部品本体５２の支持部５２ａを挟むように蓋５３の支持
部５３ａが設けられ、両支持部５２ａ，５３ａに設けら
れた孔５２ｂ，５３ｂを貫通するようにスプリングピン
５４が嵌挿されている。2. Description of the Related Art Conventionally, as shown in FIG. 6, for example, a component body 52, a lid 53, and a
Some are provided with a spring pin 54 which connects the cover 2 to the lid 53 and serves as a hinge support shaft. The component main body 52 and the lid 53 are formed with support portions 52a and 53a, which are parts constituting a hinge. And
A support portion 53a of the lid 53 is provided so as to sandwich the support portion 52a of the component main body 52, and a spring pin 54 is fitted so as to pass through holes 52b and 53b provided in the support portions 52a and 53a.

【０００３】この蝶番状部品５１を製造する場合、射出
成形にて部品本体５２及び蓋５３を成形する。そして、
部品本体５２の支持部５２ａを挟むように蓋５３の支持
部５３ａを配置して、スプリングピン５４を両孔５２
ｂ，５３ｂに嵌挿させている。When manufacturing the hinge-shaped part 51, the part main body 52 and the lid 53 are formed by injection molding. And
The support portion 53a of the lid 53 is arranged so as to sandwich the support portion 52a of the component body 52, and the spring pin 54 is inserted into the two holes 52.
b, 53b.

【０００４】[0004]

【発明が解決しようとする課題】しかしながら、スプリ
ングピン５４を両孔５２ｂ，５３ｂに嵌挿させるスプリ
ングピン嵌挿工程は、両支持部５２ａ，５３ａを両孔５
２ｂ，５３ｂを同軸上に配置させた後、スプリングピン
５４に圧力を加えて両孔５２ｂ，５３ｂに嵌挿させる必
要があり、作業が面倒である。However, in the step of inserting the spring pin 54 into the holes 52b and 53b, the support pins 52a and 53a are inserted into the holes 5b.
After arranging the 2b and 53b coaxially, it is necessary to apply pressure to the spring pin 54 to insert the spring pins 54 into the holes 52b and 53b, which is troublesome.

【０００５】また、蝶番状部品５１は、部品本体５２
と、蓋５３と、スプリングピン５４とを備えており、部
品点数を少なくしたいという要求がある。本発明は、上
記問題点を解決するためになされたものであって、その
目的は、蝶番状部品の製造を容易にするとともに部品点
数を少なくできる蝶番状部品及びその製造方法を提供す
ることにある。[0005] The hinge-shaped part 51 is provided with a part main body 52.
, A lid 53, and a spring pin 54, and there is a demand to reduce the number of parts. SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a hinge-shaped part which can facilitate manufacture of a hinge-shaped part and reduce the number of parts, and a method of manufacturing the same. is there.

【０００６】[0006]

【課題を解決するための手段】上記問題点を解決するた
め、請求項１に記載の発明では、一次成形品と二次成形
品とが蝶番部を介して相対回動可能に連結された蝶番状
部品の製造方法であって、前記一次成形品を成形すると
きは一次成形品用のキャビティ内の前記蝶番部に対応す
る位置に軸状のコア部材を配置して蝶番部に孔を有する
一次成形品を射出成形した後、前記コア部材を前記一次
成形品の孔内から後退させた後、同じ金型で二次成形品
の射出成形を行って二次成形品の蝶番部の軸部を一次成
形品の蝶番部の孔内に嵌挿された状態に形成する。According to the first aspect of the present invention, there is provided a hinge wherein a primary molded product and a secondary molded product are relatively rotatably connected via a hinge portion. A method for producing a shaped part, wherein when forming the primary molded article, a primary core having a hole in the hinge section by disposing an axial core member at a position corresponding to the hinge section in a cavity for the primary molded article. After injection molding of the molded product, after retreating the core member from the hole of the primary molded product, injection molding of the secondary molded product is performed by the same mold, and the hinge shaft portion of the secondary molded product is formed. It is formed so as to be fitted in the hole of the hinge part of the primary molded product.

【０００７】請求項２に記載の発明では、一次成形品と
二次成形品とが蝶番部を介して相対回動可能に連結され
た蝶番状部品の製造方法であって、前記蝶番部に孔が形
成された前記一次成形品を成形した後、前記一次成形品
を二次成形品の射出成形を行う金型のキャビティにその
蝶番部が配置される状態でセットして二次成形品の射出
成形を行い二次成形品の蝶番部の軸部を一次成形品の蝶
番部の孔内に嵌挿された状態に形成する。According to a second aspect of the present invention, there is provided a method of manufacturing a hinge-shaped part in which a primary molded product and a secondary molded product are connected to each other via a hinge so as to be relatively rotatable. After molding the primary molded article having the formed therein, the primary molded article is set in a state where its hinge is disposed in a cavity of a mold for performing injection molding of the secondary molded article, and the secondary molded article is injected. Forming is performed so that the hinge shaft of the secondary molded product is inserted into the hinge hole of the primary molded product.

【０００８】請求項３に記載の発明では、一次成形品と
二次成形品とが蝶番部を介して相対回動可能に連結され
た蝶番状部品であって、前記蝶番部の前記一次成形品側
に孔が設けられるとともに、前記蝶番部の前記二次成形
品側に前記孔に嵌挿された軸部が一体に突設されてい
る。[0008] In the invention according to claim 3, the primary molded product and the secondary molded product are hinge-like parts connected to each other via a hinge portion so as to be relatively rotatable, and the primary molded product of the hinge portion is provided. A hole is provided on the side, and a shaft part fitted into the hole is integrally protruded from the hinge part on the side of the secondary molded product.

【０００９】従って、請求項１に記載の発明によれば、
一次成形品を成形するときは、一次成形品の蝶番部に対
応する位置に軸状のコア部材が配置された状態で射出成
形が行われ、蝶番部に孔を有する一次成形品が形成され
る。次に、コア部材が一次成形品の孔内から後退した状
態で同じ金型で二次成形品の射出成形が行われ、一次成
形品の蝶番部の孔内に嵌挿された状態の軸部を有する蝶
番部を備えた二次成形品が形成される。Therefore, according to the first aspect of the present invention,
When molding the primary molded product, injection molding is performed in a state where the shaft-shaped core member is arranged at a position corresponding to the hinge portion of the primary molded product, and a primary molded product having a hole in the hinge portion is formed. . Next, in the state where the core member is retracted from the hole of the primary molded product, injection molding of the secondary molded product is performed with the same mold, and the shaft portion in a state of being inserted into the hole of the hinge portion of the primary molded product. The secondary molded article provided with the hinge part having the following is formed.

【００１０】請求項２に記載の発明によれば、蝶番部に
孔が形成された一次成形品が成形される。その一次成形
品が二次成形品の射出成形を行う金型のキャビティにそ
の蝶番部が配置された状態で二次成形品の射出成形が行
われ、蝶番部に一次成形品の蝶番部の孔内に嵌挿された
状態の軸部を有する二次成形品が形成される。[0010] According to the second aspect of the present invention, a primary molded product having a hole formed in the hinge portion is formed. Injection molding of the secondary molded product is performed in a state where the hinge portion is arranged in the cavity of the mold in which the primary molded product performs the injection molding of the secondary molded product, and the hinge portion of the primary molded product has a hole in the hinge portion. A secondary molded article having a shaft portion inserted therein is formed.

【００１１】請求項３に記載の発明によれば、蝶番状部
品は部品点数が少なくなる。According to the third aspect of the present invention, the number of hinge-shaped parts is reduced.

【００１２】[0012]

【発明の実施の形態】以下、本発明を具体化した一実施
の形態を図１〜図５に従って説明する。図５に示すよう
に、蝶番状部品１は、二次成形品としての部品本体２と
一次成形品としての蓋３とが、蝶番部４を介して相対回
動可能に連結されている。蝶番部４は、部品本体２に形
成された第１支持部５と、蓋３に形成された第２支持部
６とで構成されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. As shown in FIG. 5, the hinge-shaped component 1 has a component body 2 as a secondary molded product and a lid 3 as a primary molded product connected via a hinge portion 4 so as to be relatively rotatable. The hinge part 4 includes a first support part 5 formed on the component main body 2 and a second support part 6 formed on the lid 3.

【００１３】部品本体２は、略円筒状に形成され、その
一端面には第１支持部５が設けられている。第１支持部
５はその一端面から突出するように形成され、第１支持
部５の先端部５ａは円柱状に形成されている。そして，
先端部５ａの両端面には、軸部５ｂが突設されている。
また、第１支持部５が設けられた位置と対向する位置に
は、第１係合部７が設けられている。The component main body 2 is formed in a substantially cylindrical shape, and a first support portion 5 is provided on one end surface thereof. The first support portion 5 is formed so as to protrude from one end surface thereof, and a tip end portion 5a of the first support portion 5 is formed in a columnar shape. And
Shafts 5b are protruded from both end surfaces of the tip 5a.
Further, a first engaging portion 7 is provided at a position facing the position where the first support portion 5 is provided.

【００１４】蓋３は、その外周面に第２支持部６が設け
られている。第２支持部６は外周面に対してほぼ直角方
向に突出する状態に形成され、第２支持部６の先端部６
ａは部品本体２と蓋３とが連結された状態において、第
１支持部５の先端部５ａを挟むように２つ設けられてい
る。先端部６ａは、孔６ｂを有する円筒状に形成されて
いる。また、蓋３には、第２支持部６が設けられた位置
と対向する位置に第２係合部８が設けられている。The lid 3 is provided with a second support 6 on the outer peripheral surface. The second support portion 6 is formed so as to project in a direction substantially perpendicular to the outer peripheral surface.
In the state where the component main body 2 and the lid 3 are connected, two are provided so as to sandwich the distal end portion 5a of the first support portion 5. The tip 6a is formed in a cylindrical shape having a hole 6b. The lid 3 is provided with a second engaging portion 8 at a position facing the position where the second support portion 6 is provided.

【００１５】そして、蓋３の２つの孔６ｂに部品本体２
の軸部５ｂが嵌挿され、蝶番状部品１の部品本体２と蓋
３とが相対回動可能に連結されている。なお、蓋３が部
品本体２側に回動することにより第２係合部８が第１係
合部７に嵌合され、蝶番状部品１が閉じた状態になる。Then, the component body 2 is inserted into the two holes 6b of the lid 3.
Of the hinge-shaped part 1 and the lid 3 are connected so as to be relatively rotatable. The second engaging portion 8 is fitted into the first engaging portion 7 by rotating the lid 3 toward the component body 2, and the hinge-shaped component 1 is in a closed state.

【００１６】また、部品本体２と蓋３とは密着しない材
料が用いられ、本実施の形態では、部品本体２にはポリ
アセタール樹脂が用いられ、蓋３にはＡＢＳ樹脂が用い
られている。Further, a material that does not make close contact with the component body 2 and the lid 3 is used. In this embodiment, a polyacetal resin is used for the component body 2 and an ABS resin is used for the lid 3.

【００１７】次に、以上のように構成された蝶番状部品
１の製造方法について説明する。蝶番状部品１は、図２
に示すように、固定金型９ａと可動金型９ｂとで構成さ
れた金型９を用いて製造される。固定金型９ａは軸Ｘを
中心として回転可能に構成されている。この金型９に
は、部品本体２の形状に対応した空間である第１キャビ
ティ１０と、蓋３の形状に対応した空間である第２キャ
ビティ１１が設けられている。また、軸Ｘを中心として
対称な位置には、一次成形品である蓋３を収容するため
の空間１２が第１キャビティ１０と同じ形状で設けられ
ている。そして、可動金型９ｂには、軸状のコア部材と
してのスライドコア１３が第２キャビティ１１内の一次
成形品の蝶番部４に対応する位置に出没可能に設けられ
ている。Next, a method of manufacturing the hinge-shaped component 1 configured as described above will be described. The hinge part 1 is shown in FIG.
As shown in (1), it is manufactured using a mold 9 composed of a fixed mold 9a and a movable mold 9b. The fixed mold 9a is configured to be rotatable about the axis X. The mold 9 is provided with a first cavity 10 which is a space corresponding to the shape of the component body 2 and a second cavity 11 which is a space corresponding to the shape of the lid 3. Further, a space 12 for accommodating the lid 3 as a primary molded product is provided at a position symmetrical with respect to the axis X in the same shape as the first cavity 10. In the movable mold 9b, a slide core 13 as a shaft-shaped core member is provided so as to be able to protrude and retract at a position corresponding to the hinge portion 4 of the primary molded product in the second cavity 11.

【００１８】蝶番状部品１は、一次成形品である蓋３を
成形した後、二次成形品である部品本体２を成形するこ
とにより製造される。まず、図１（ａ）に示すように、
第２キャビティ１１内に一次成形ゲート１４から樹脂を
流し込み蓋３を射出成形する。この際、図３に示すよう
に、第２キャビティ１１内にはスライドコア１３が配置
されており、蓋３の第２支持部６の先端部６ａには孔６
ｂが形成される。The hinge-shaped part 1 is manufactured by forming the lid 3 as a primary molded product and then molding the component body 2 as a secondary molded product. First, as shown in FIG.
A resin is poured into the second cavity 11 from the primary molding gate 14 and the lid 3 is injection molded. At this time, as shown in FIG. 3, a slide core 13 is arranged in the second cavity 11, and a hole 6 is formed in a tip 6a of the second support portion 6 of the lid 3.
b is formed.

【００１９】次に、可動金型９ｂを開放側（下方）に移
動させる。このとき、蓋３は可動金型９ｂに伴って移動
される。その後、固定金型９ａを軸Ｘを中心として１８
０度回転させ、可動金型９ｂを閉鎖位置に移動させて固
定金型９ａと可動金型９ｂとを接合させる。Next, the movable mold 9b is moved to the open side (downward). At this time, the lid 3 is moved with the movable mold 9b. Thereafter, the fixed mold 9a is moved around the axis X for 18 minutes.
By rotating the movable mold 9b to the closed position by rotating it by 0 degrees, the fixed mold 9a and the movable mold 9b are joined.

【００２０】そして、図４に示すように、スライドコア
１３を第２支持部６の両側方側に移動させ、スライドコ
ア１３を孔６ｂから退避させる。その状態で、図１
（ｂ）に示すように、第１キャビティ１０内に二次成形
ゲート１５から樹脂を流し込み部品本体２を射出成形す
る。部品本体２の成形時に孔６ｂ内に樹脂が導入され
て、部品本体２の第１支持部５の先端部５ａには孔６ｂ
に嵌挿された軸部５ｂが形成される。また、蓋３及び部
品本体２の材質に密着しない材料が用いられていること
から、孔６ｂと軸部５ｂとは固着することはなく、部品
本体２と蓋３とが蝶番部４を介して相対回動可能な状態
に形成される。Then, as shown in FIG. 4, the slide core 13 is moved to both sides of the second support portion 6, and the slide core 13 is retracted from the hole 6b. In that state, FIG.
As shown in (b), a resin is poured into the first cavity 10 from the secondary molding gate 15 to injection-mold the component main body 2. The resin is introduced into the hole 6b at the time of molding the component body 2, and the tip 6a of the first support portion 5 of the component body 2 has a hole 6b.
Is formed. Further, since a material that does not adhere to the material of the lid 3 and the component body 2 is used, the hole 6b and the shaft portion 5b do not adhere to each other, and the component body 2 and the lid 3 are connected via the hinge portion 4. It is formed so as to be relatively rotatable.

【００２１】最後に、金型９を開放して製品を取り出せ
ば、第１支持部５と第２支持部６とを介して連結された
蝶番状部品１が製造できる。上記実施の形態によれば、
以下に示す効果を有する。Finally, if the mold 9 is opened and the product is taken out, the hinge-shaped part 1 connected via the first support 5 and the second support 6 can be manufactured. According to the above embodiment,
It has the following effects.

【００２２】（イ）蝶番状部品１は、軸部５ｂが孔６ｂ
に嵌挿された状態で成形されるので、従来のようなスプ
リングピンを用いる必要がなくなり、部品点数を少なく
することができる。また、スプリングピンを用いる必要
がなくなることから、従来のスプリングピン嵌挿工程を
なくすことができ、蝶番状部品１の製造が容易になる。(A) The hinge-shaped part 1 has a shaft portion 5b having a hole 6b.
Therefore, it is not necessary to use a conventional spring pin, and the number of parts can be reduced. In addition, since it is not necessary to use a spring pin, the conventional spring pin fitting step can be eliminated, and the manufacture of the hinge-shaped part 1 becomes easy.

【００２３】（ロ）部品本体２の軸部５ｂが蓋３の孔６
ｂに嵌挿された状態で形成されるので、部品本体２を蓋
３に組み付ける工程がいらなくなり、蝶番状部品１の製
造が容易になる。(B) The shaft portion 5b of the component body 2 is
Since it is formed in a state where it is inserted into b, the step of assembling the component main body 2 to the lid 3 is not required, and the manufacture of the hinge-shaped component 1 is facilitated.

【００２４】（ハ）金型９内のスライドコア１３を移動
させるだけで、軸部５ｂ及び孔６ｂを形成することがで
き、金型９の構造を簡単にすることができる。 （ニ）蝶番状部品１は一の金型９内で製造できるので、
蝶番状部品１の製造が容易になる。(C) The shaft portion 5b and the hole 6b can be formed only by moving the slide core 13 in the mold 9, and the structure of the mold 9 can be simplified. (D) Since the hinge-shaped part 1 can be manufactured in one mold 9,
The manufacture of the hinge part 1 is facilitated.

【００２５】（ホ）可動金型９ｂが開放時に下方へ移動
されるので、一次成形品を可動金型９ｂと一体に移動さ
せるのが容易となり、固定金型９ａの回転時に一次成形
品が支障とならない。(E) Since the movable mold 9b is moved downward when it is opened, it is easy to move the primary molded product together with the movable mold 9b, and the primary molded product is hindered when the fixed mold 9a rotates. Does not.

【００２６】なお、実施の形態は上記に限らず、例えば
以下の場合であってもよい。 ○ 金型９は第１キャビティ１０と第２キャビティ１１
とを有し、一次成形品の製造時に第１キャビティ１０内
に樹脂が入らないものであればよい。例えば金型が第１
キャビティ１０と第２キャビティ１１とが蝶番部４に対
応する位置を介して連通したキャビティであって、蝶番
部４に対応する位置にスライドコア１３が配置され、一
次成形品の成形時には第１キャビティ１０内への樹脂の
侵入を防ぐ分離壁を配置して孔６ｂを有する蓋３を射出
成形した後、スライドコア１３を孔６ｂ内から後退させ
るとともに分離壁を取り除いた後、二次成形品の射出成
形を行って部品本体２の蝶番部４の軸部５ｂを蓋３の蝶
番部４の孔６ｂ内に嵌挿された状態に形成するものであ
ってもよい。この場合、金型９を小さくすることができ
るとともに、固定金型９ａを回転する作業が不要にな
る。 ○ 一次成形品を成形する型と二次成形品を成形する型
とを別々に設けて、二次成形品を成形する型内に一次成
形品を組み込んだ状態で二次成形品を成形してもよい。
この場合、型を小さくできるとともに、固定金型９ａを
回転する作業が不要になる。 ○ 蝶番状部品１を一次成形品としての部品本体２と二
次成形品としての蓋３とで構成してもよい。この場合、
部品本体２の第１支持部５の先端部５ａに孔が設けら
れ、蓋３の第２支持部６の先端部６ａに軸部が設けられ
る。 ○ 蝶番状部品１は、蝶番部４を有するものであればよ
く、容器状のものでなくてもよい。The embodiment is not limited to the above, and may be, for example, the following case. The mold 9 has a first cavity 10 and a second cavity 11
And any resin that does not allow the resin to enter the first cavity 10 during the production of the primary molded product. For example, the mold is first
A cavity in which the cavity 10 and the second cavity 11 communicate with each other via a position corresponding to the hinge part 4, and a slide core 13 is disposed at a position corresponding to the hinge part 4, and the first cavity is formed at the time of molding a primary molded product. After injection molding of the lid 3 having the hole 6b by disposing a separation wall for preventing resin from entering the inside 10, the slide core 13 is retracted from the hole 6b and the separation wall is removed. The shaft 5b of the hinge 4 of the component main body 2 may be formed by injection molding so as to be inserted into the hole 6b of the hinge 4 of the lid 3. In this case, the size of the mold 9 can be reduced, and the operation of rotating the fixed mold 9a becomes unnecessary. ○ Separately provide the mold for molding the primary molded article and the mold for molding the secondary molded article, and mold the secondary molded article with the primary molded article incorporated in the mold for molding the secondary molded article. Is also good.
In this case, the size of the mold can be reduced, and the operation of rotating the fixed mold 9a becomes unnecessary. The hinge-shaped part 1 may be composed of a part main body 2 as a primary molded product and a lid 3 as a secondary molded product. in this case,
A hole is provided at the tip 5 a of the first support 5 of the component body 2, and a shaft is provided at the tip 6 a of the second support 6 of the lid 3. The hinge-shaped part 1 may have the hinge part 4 and does not have to be a container.

【００２７】以下に、前記実施の形態から把握できる請
求項以外の技術的思想を効果とともに説明する。 （１） 請求項１において、一次成形品及び二次成形品
に対応するキャビティが蝶番部に対応する位置を介して
連通され、一次成形品を成形するときは蝶番部に対応す
る位置に軸状のコア部材及び分離壁を配置して蝶番部に
孔を有する一次成形品を射出成形した後、前記一次成形
品の孔内から前記コア部材を後退させるとともに前記分
離壁を取り除いた後、二次成形品の射出成形を行って二
次成形品の蝶番部の軸部を一次成形品の蝶番部の孔内に
嵌挿された状態に形成する蝶番状部品の製造方法。この
場合、型を小さくできるとともに、固定金型を回転する
作業が不要になる。In the following, technical ideas other than the claims that can be grasped from the embodiment will be described together with their effects. (1) In claim 1, the cavities corresponding to the primary molded product and the secondary molded product are communicated via a position corresponding to the hinge portion, and when the primary molded product is molded, the cavity is formed at the position corresponding to the hinge portion. After injection molding a primary molded product having a hole in a hinge portion by disposing the core member and the separation wall, the core member is retracted from the inside of the hole of the primary molded product and the separation wall is removed. A method for manufacturing a hinge-shaped part, wherein injection molding of a molded article is performed to form a hinge part of a secondary molded article in a state of being fitted into a hole of a hinge part of a primary molded article. In this case, the size of the mold can be reduced, and the operation of rotating the fixed mold is not required.

【００２８】（２） 請求項１において、金型は固定金
型と可動金型とで構成され、一次成形品を射出成形した
後、可動金型を一次成形品とともに下方に移動させ、軸
を中心として回転させた後、可動金型を閉鎖位置に移動
させて固定金型と可動金型とを接合し、二次成形品を射
出成形する蝶番状部品の製造方法。この場合、一次成形
品を可動金型と一体に移動させるのが容易となり、固定
金型の回転時に一次成形品が支障とならない。(2) In claim 1, the mold is composed of a fixed mold and a movable mold. After injection molding of the primary molded product, the movable mold is moved downward together with the primary molded product, and the shaft is moved. A method of manufacturing a hinge-shaped part in which a movable mold is moved to a closed position after rotating about a center, a fixed mold and a movable mold are joined, and a secondary molded product is injection-molded. In this case, it is easy to move the primary molded product integrally with the movable mold, and the primary molded product does not hinder the rotation of the fixed mold.

【００２９】（３） 請求項１又は２において、二次成
形品の蝶番部を挟むように一次成形品の蝶番部が配置さ
れている蝶番状部品の製造方法。この場合、一次成形品
の蝶番部に形成された孔内に二次成形品が導入されやす
く、二次成形品の蝶番部の軸部が形成されやすくなる。(3) The method for manufacturing a hinge-shaped part according to claim 1 or 2, wherein the hinge portion of the primary molded product is arranged so as to sandwich the hinge portion of the secondary molded product. In this case, the secondary molded product is easily introduced into the hole formed in the hinge of the primary molded product, and the shaft of the hinge of the secondary molded product is easily formed.

【００３０】[0030]

【発明の効果】以上詳述したように、請求項１及び２に
記載の発明によれば、二次成形品の形成と同時に蝶番状
部品が組み付けられた状態で製造されるため、従来のス
プリングピン嵌挿工程をなくすことができ、蝶番状部品
の製造が容易になる。As described in detail above, according to the first and second aspects of the present invention, since the hinge-shaped part is manufactured while the secondary molded product is formed, the conventional spring is manufactured. The pin insertion process can be eliminated, and the manufacture of hinge-shaped parts becomes easy.

【００３１】請求項３に記載の発明によれば、従来のよ
うなスプリングピンを用いる必要がなくなり、蝶番状部
品の部品点数を少なくすることができる。According to the third aspect of the present invention, it is not necessary to use a spring pin as in the prior art, and the number of hinge-shaped parts can be reduced.

【図面の簡単な説明】[Brief description of the drawings]

【図１】（ａ）は実施の形態の一次成形品成形状態の部
分模式断面図、（ｂ）は同じく二次成形品成形状態の部
分模式断面図。FIG. 1 (a) is a partial schematic cross-sectional view of a primary molded product according to an embodiment, and FIG. 1 (b) is a partial schematic cross-sectional view of a secondary molded product according to the embodiment.

【図２】同じく金型内の模式断面図。FIG. 2 is a schematic cross-sectional view of the same mold.

【図３】同じく一次成形品成形状態の部分模式断面図。FIG. 3 is a partial schematic cross-sectional view of the same primary molded article in a molded state.

【図４】同じく二次成形品成形状態の部分模式断面図。FIG. 4 is a partial schematic cross-sectional view of the secondary molded article in a molded state.

【図５】同じく蝶番状部品の斜視図。FIG. 5 is a perspective view of the hinge part.

【図６】従来の蝶番状部品の斜視図。FIG. 6 is a perspective view of a conventional hinge-shaped part.

【符号の説明】[Explanation of symbols]

１…蝶番状部品、２…二次成形品としての部品本体、３
…一次成形品としての蓋、４…蝶番部、５…蝶番部とし
ての第１支持部、５ｂ…軸部、６…蝶番部としての第２
支持部、６ｂ…軸部、９…型、１０…二次成形品用のキ
ャビティ、１１…一次成形品用のキャビティ、１３…コ
ア部材としてのスライドコア。1: Hinge-shaped part, 2: Body part as a secondary molded product, 3
... Lid as a primary molded product, 4 ... Hinge part, 5 ... First support part as a hinge part, 5b ... Shaft part, 6 ... Second as a hinge part
Supporting portion, 6b: shaft portion, 9: mold, 10: cavity for secondary molded product, 11: cavity for primary molded product, 13: slide core as core member.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 荒尾 梅男 愛知県丹羽郡大口町大字豊田字野田１番地 株式会社東海理化電機製作所内 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Meio Arao 1 Noda, Toyota, Oguchi-cho, Oguchi-machi, Niwa-gun, Aichi Prefecture Inside Tokai Rika Electric Works, Ltd.

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】 一次成形品と二次成形品とが蝶番部を介
して相対回動可能に連結された蝶番状部品の製造方法で
あって、前記一次成形品を成形するときは一次成形品用
のキャビティ内の前記蝶番部に対応する位置に軸状のコ
ア部材を配置して蝶番部に孔を有する一次成形品を射出
成形した後、前記コア部材を前記一次成形品の孔内から
後退させた後、同じ金型で二次成形品の射出成形を行っ
て二次成形品の蝶番部の軸部を一次成形品の蝶番部の孔
内に嵌挿された状態に形成することを特徴とする蝶番状
部品の製造方法。1. A method of manufacturing a hinge-shaped part in which a primary molded article and a secondary molded article are connected to each other via a hinge part so as to be relatively rotatable, wherein the primary molded article is molded when the primary molded article is molded. After a shaft-shaped core member is disposed at a position corresponding to the hinge portion in the cavity for injection molding of a primary molded product having a hole in the hinge portion, the core member is retracted from the hole of the primary molded product. After that, the secondary molding is injection-molded with the same mold to form the hinge portion of the secondary molding so as to be fitted into the hole of the hinge portion of the primary molding. Method for manufacturing hinge-shaped parts. 【請求項２】 一次成形品と二次成形品とが蝶番部を介
して相対回動可能に連結された蝶番状部品の製造方法で
あって、前記蝶番部に孔が形成された前記一次成形品を
成形した後、前記一次成形品を二次成形品の射出成形を
行う金型のキャビティにその蝶番部が配置される状態で
セットして二次成形品の射出成形を行い二次成形品の蝶
番部の軸部を一次成形品の蝶番部の孔内に嵌挿された状
態に形成することを特徴とする蝶番状部品の製造方法。2. A method of manufacturing a hinge-shaped part in which a primary molded product and a secondary molded product are connected to each other via a hinge so as to be relatively rotatable, wherein the primary molded product has a hole formed in the hinge. After molding the article, the primary molded article is set in a state where the hinge portion is arranged in a cavity of a mold for performing injection molding of the secondary molded article, and the secondary molded article is formed by injection molding of the secondary molded article. A shaft part of the hinge part is formed so as to be fitted in a hole of the hinge part of the primary molded product. 【請求項３】 一次成形品と二次成形品とが蝶番部を介
して相対回動可能に連結された蝶番状部品であって、前
記蝶番部の前記一次成形品側に孔が設けられるととも
に、前記蝶番部の前記二次成形品側に前記孔に嵌挿され
た軸部が一体に突設されていることを特徴とする蝶番状
部品。3. A hinge-shaped part in which a primary molded article and a secondary molded article are connected to each other via a hinge so as to be relatively rotatable, wherein a hole is provided on the primary molded article side of the hinge. A hinge part, wherein a shaft part inserted into the hole is integrally provided on the side of the hinge part on the side of the secondary molded product.
JP16442397A 1997-06-20 1997-06-20 Hinged part manufacturing method Expired - Lifetime JP3699564B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16442397A JP3699564B2 (en) 1997-06-20 1997-06-20 Hinged part manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16442397A JP3699564B2 (en) 1997-06-20 1997-06-20 Hinged part manufacturing method

Publications (2)

Publication Number Publication Date
JPH1110676A true JPH1110676A (en) 1999-01-19
JP3699564B2 JP3699564B2 (en) 2005-09-28

Family

ID=15792877

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16442397A Expired - Lifetime JP3699564B2 (en) 1997-06-20 1997-06-20 Hinged part manufacturing method

Country Status (1)

Country Link
JP (1) JP3699564B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2842713A1 (en) * 2013-09-03 2015-03-04 Andreas Massold Joint
JP2020511340A (en) * 2017-03-21 2020-04-16 マグナ エクステリアーズ インコーポレイテッド Two-hinge in-mold assembly

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2842713A1 (en) * 2013-09-03 2015-03-04 Andreas Massold Joint
JP2015048149A (en) * 2013-09-03 2015-03-16 フランク，ゾマー Link
US9493142B2 (en) 2013-09-03 2016-11-15 Frank Sommer Link
JP2020511340A (en) * 2017-03-21 2020-04-16 マグナ エクステリアーズ インコーポレイテッド Two-hinge in-mold assembly

Also Published As

Publication number Publication date
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