JPS58112801A - Manufacturing method of wheel cap - Google Patents

Manufacturing method of wheel cap

Info

Publication number
JPS58112801A
JPS58112801A JP21556581A JP21556581A JPS58112801A JP S58112801 A JPS58112801 A JP S58112801A JP 21556581 A JP21556581 A JP 21556581A JP 21556581 A JP21556581 A JP 21556581A JP S58112801 A JPS58112801 A JP S58112801A
Authority
JP
Japan
Prior art keywords
wheel cap
frame member
cap
frame material
forming
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.)
Pending
Application number
JP21556581A
Other languages
Japanese (ja)
Inventor
Naoharu Sekimoto
尚治 関本
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.)
Hashimoto Forming Industry Co Ltd
Original Assignee
Hashimoto Forming Industry 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 Hashimoto Forming Industry Co Ltd filed Critical Hashimoto Forming Industry Co Ltd
Priority to JP21556581A priority Critical patent/JPS58112801A/en
Publication of JPS58112801A publication Critical patent/JPS58112801A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B7/00—Wheel cover discs, rings, or the like, for ornamenting, protecting, venting, or obscuring, wholly or in part, the wheel body, rim, hub, or tyre sidewall, e.g. wheel cover discs, wheel cover discs with cooling fins
    • B60B7/06—Fastening arrangements therefor
    • B60B7/12—Fastening arrangements therefor comprising an annular spring or gripping element mounted on the cover

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)

Abstract

PURPOSE:To improve resistance to creep and prevent falling of a cap at the time of forming a hat-shaped wheel cap made of synthetic resin by setting an elastic ring-shaped frame member in a space for forming a cap opening end of a metallic mold core before making injection molding. CONSTITUTION:In a space 23 to form therein an opening end of a wheel cap 1 at a joining part of cores 21, 22 of a for injection forming mold, an almost rectangular bench 26 is provided in a flang bottom forming part 25 of the wheel cap 1, and the elastic ring-shaped frame member 10 is set there so as to be prevented from its lateral slide by means of a pair of pins 27. Subsequently, injection molding is performed. Thus, the frame member 10 is buried and formed as one body in the flange of the wheel cap 1, and a part opposite to the bench 26 is formed like a window so as to allow visual recognition of the frame member 10. Due to such a configuration, the ring-shaped frame member 10 prevents inward deformation of a side wall of the wheel cap to improve resistance against creep, and falling of the wheel cap may be prevented.

Description

【発明の詳細な説明】 本発明はホイール用キャップの製造方法、特にホイール
ディスクに円周方向に沿って等配されたボルトに確実に
固定し得るホイール用キャップの製造方法に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a wheel cap, and more particularly to a method of manufacturing a wheel cap that can be securely fixed to bolts equally spaced along the circumference of a wheel disc.

従来、第１図に示すようにホイールキャップ１は車軸の
先端２側を被う如くハツト状となり、その開口端部に鍔
４を有しておシ、この鍔４．の先端側をホイールディス
ク３に円周方向に沿って、例えば４個等配されたナツト
５における下部側に圧接せしめ、このナツト５の下部側
の間隙を利用して固定するものである。この場合、キャ
ップ１の側壁６に対し、外径方向に作用する曲げ弾性を
与え、この弾性力で鍔４の先端側をナツト５側に圧接す
るように固定するものであるが、これによればこのキャ
ップ１の曲げ剛性の小さいものは使用できず、このため
キャップ１を形成する材料が弾性力に富むものに特定化
されてしまい、材料選定が困難となると共に材料選定に
伴いコストが高くなるだけでなく、キャップ１の側壁６
側に常に内側方向の応力がかかシ、また熱履歴を受ける
ためにクリープ変形が生じ、これによシ鍔４のナツト５
への圧接力が弱くなってホイール用キャップの回転モー
メントが小さくなシ、車の振動で除々に回転し、キャッ
プ１が脱落する危険性を有し、また耐クリープ特性の良
好な材料しか使用できないので、上記と同様材料選定上
の問題が発生してしまうという問題を有していた。Conventionally, as shown in FIG. 1, a wheel cap 1 is shaped like a hat so as to cover the tip 2 side of an axle, and has a flange 4 at its open end. The tip end side of the nut 5 is pressed against the lower side of, for example, four nuts 5 equally spaced along the circumferential direction of the wheel disc 3, and the nuts 5 are fixed by using the gaps on the lower side of the nuts 5. In this case, the side wall 6 of the cap 1 is given bending elasticity that acts in the outer diameter direction, and this elastic force is used to fix the tip end of the collar 4 in pressure contact with the nut 5. Cigarette caps 1 with low bending rigidity cannot be used, and for this reason, the material forming the cap 1 has to be specified to be highly elastic, making material selection difficult and increasing costs. Not only the side wall 6 of the cap 1
Creep deformation occurs because the sides are constantly subjected to stress in the inward direction and subjected to thermal history, which causes the nut 5 of the tsuba 4 to
If the pressing force against the wheel cap becomes weak and the rotational moment of the wheel cap is small, it will rotate gradually due to the vibration of the car and there is a risk that the cap 1 will fall off, and only materials with good creep resistance can be used. Therefore, there is a problem in material selection similar to the above.

本発明の目的は、ホイール用キャップのほぼ開口端部側
にリング状の枠材が埋設市れたホイール用キャップを提
供するようにして、上記欠点を除去するものであシ、以
下実施例を用いて詳細に説明する。An object of the present invention is to eliminate the above-mentioned drawbacks by providing a wheel cap in which a ring-shaped frame material is embedded almost at the open end side of the wheel cap. This will be explained in detail using

第３図、第４図は本発明方法により得られるホイールキ
ャップの構造の一実施例を示す簡略構成図であり、第１
図、第２図と同じものは同一符号を用いている。本実施
例においてはホイール用キャップ１の側壁６の開口端部
側から外側方向に突出する鍔４の根本側に第５図に示す
ようにリング状となった枠材１０が埋設されている。こ
の枠材１０は１本のワイヤをリング状に成形後に両端を
溶接、接着、半田付は埼の手段で接続することイ得られ
、その径は鍔４の根本側の径とほぼ一致する。このよう
に鍔４側に枠材１０を一体化しておくことにより、側壁
６のクリープ変形を防止できると共に鍔４の先端のナツ
ト５側の圧接力を高めることができ、ホイール用キャッ
プ１の取付上の信頼性を高めることができる。3 and 4 are simplified configuration diagrams showing one embodiment of the structure of a hubcap obtained by the method of the present invention, and FIG.
2. Components that are the same as those in FIG. In this embodiment, a ring-shaped frame member 10 is embedded as shown in FIG. 5 at the root side of the collar 4 that projects outward from the open end side of the side wall 6 of the wheel cap 1. As shown in FIG. This frame material 10 can be obtained by forming a single wire into a ring shape and then connecting both ends by welding, gluing, or soldering using suitable means, and its diameter almost matches the diameter of the root side of the collar 4. By integrating the frame material 10 on the flange 4 side in this way, creep deformation of the side wall 6 can be prevented, and the pressure contact force on the nut 5 side at the tip of the flange 4 can be increased, making it possible to attach the wheel cap 1. reliability can be increased.

次に以上の構成によるホイール用キャップの製造方法に
ついて説明する。第６図ないし第９図は本発明によるホ
イール用キャッ・プの製造方法の一実施例を示す簡略構
成図であシ、同図において、１．２はインジェクション
成形金型を構成するコアであり、両コア２１，２２の接
合部分において、ホイール用キャップ１を成形すべき成
形空間２３が形成され、この成形空間２３に、上記鍔４
を成形すべき空間２３＆における鍔４０下面４ａを成形
する底壁２５には第８図に示すようにほぼ矩形状となっ
た台２６が設置されておシ、この台２６の上に前記枠材
１０が載置される。この枠材１０は底壁２５に植設され
た対向する一対のピン２７．２７によって横ずれしない
ように保持されている。Next, a method for manufacturing a wheel cap having the above configuration will be explained. 6 to 9 are simplified configuration diagrams showing an embodiment of the method for manufacturing a wheel cap according to the present invention. In the figures, 1.2 is a core constituting an injection mold. A molding space 23 in which the wheel cap 1 is to be molded is formed at the joint portion of both cores 21 and 22, and the flange 4 is placed in this molding space 23.
As shown in FIG. 8, a substantially rectangular stand 26 is installed on the bottom wall 25 for forming the lower surface 4a of the flange 40 in the space 23& in which the frame material is to be formed. 10 is placed. This frame member 10 is held by a pair of opposing pins 27, 27 planted in the bottom wall 25 so as not to shift laterally.

枠材１０をこのようにセットした後インジェクション成
形空間２３に大きな圧力を持って溶融合成樹脂を注入す
ることによシ成形空間２３の形状に一致する形状のホイ
ール用キャップ１を得ることができ、しかもこのホイー
ル用キャップ１の鍔４のほぼ下面側に枠材ｌＯが埋設さ
れたものを得ることができる。この場壷、枠材１０は第
９図に示すように台２６によシ形成された窓２８よシ目
視できる。尚ピン２７によって小孔２９も形成される。After setting the frame material 10 in this way, by injecting molten synthetic resin into the injection molding space 23 with a large pressure, it is possible to obtain the wheel cap 1 having a shape that matches the shape of the molding space 23. Furthermore, it is possible to obtain a wheel cap 1 in which the frame material 1O is embedded substantially on the lower surface side of the collar 4. At this time, the pot and frame material 10 can be visually seen through a window 28 formed in the base 26, as shown in FIG. Note that a small hole 29 is also formed by the pin 27.

以上の構成によシ製造されたホイール用キャップによれ
ば鍔４のほぼ下面側に枠材１０が埋設一体化されている
ので、この枠材１０によって側壁６の内側方向への変形
を阻止でき、クリープ変形を防止できるのでホイール用
・キャップ１に発生する回転モーメントの低下を防止で
きる。本考案者による試験によれば、耐熱性を有するガ
ラス入りナイロン樹脂から成るホイール用キャップと、
耐熱性をあまり有しないポリプロピレンから成シ、かつ
枠材１０を有するホイール用キャップとを８０℃で４時
間維持し、ついで−３０℃で１．５時間維持し、このサ
イクルを４回行なった所、前者は回転トルク比率が１か
ら０．６に低下したが、後する理由としては、樹脂が溶
融しナツト形状になじむからであると考えられる＝ 第１０図は本発明のホイール用キャッ７ブの製造方法の
他の実施例を示す平面図であシ、本発明においてはピン
２７．２７の対向部分を軌跡とするような正円状軌跡ｌ
の径よシも若干大きな径を有するリング状の枠材１０を
ピン２７．２７の対向部分に装着するにあたり、同＊Ｉ
に示すようにピン２７．２７で挾むべき枠材ｌＯの一部
分をやや内側に変形させた状態で枠材１０をピン２７と
２７の対向部分に装着するのである。このように枠材１
０を装着すると枠材１０には常に外側に広がるような応
力が作用し、この状態でインジェクション成形を行なっ
て枠材１０を一体化すると枠材１０の上記応力によって
側壁６には常に外側方向の応力が作用するので経時的に
側壁６に発生する内側方向へのクリープ変形をよシ効果
的に抑えることができる。According to the wheel cap manufactured with the above structure, the frame material 10 is embedded and integrated almost on the lower surface side of the collar 4, so that the side wall 6 can be prevented from deforming inwardly by the frame material 10. Since creep deformation can be prevented, a decrease in the rotational moment generated in the wheel cap 1 can be prevented. According to tests conducted by the inventor, a wheel cap made of heat-resistant glass-filled nylon resin;
A wheel cap made of polypropylene that does not have much heat resistance and having a frame material 10 was maintained at 80°C for 4 hours, then at -30°C for 1.5 hours, and this cycle was repeated 4 times. In the former, the rotational torque ratio decreased from 1 to 0.6, but the reason for the latter is thought to be that the resin melts and adapts to the nut shape. Figure 10 shows the wheel cap 7 of the present invention. 2 is a plan view showing another embodiment of the manufacturing method, and in the present invention, a perfect circular locus l whose locus is the opposing portion of the pins 27 and 27.
When attaching the ring-shaped frame material 10 having a slightly larger diameter than the pin 27.27, the same *I
As shown in the figure, the frame material 10 is attached to the opposing portions of the pins 27 and 27 with a portion of the frame material lO to be held between the pins 27 and 27 deformed slightly inward. Frame material 1 like this
0 is attached, a stress that always spreads outward acts on the frame material 10, and when injection molding is performed in this state to integrate the frame material 10, the stress of the frame material 10 causes the side wall 6 to always have a stress that spreads outward. Since stress is applied, inward creep deformation that occurs in the side wall 6 over time can be more effectively suppressed.

以上説明したように本発明によるホイール用キャップの
製造方法によれば、インジェクション成形金型の成形空
間に予めリング状となった枠材をセットしておき、この
状態でインジェクション成形を行なうようにしたので上
記枠材によってホイール用キャップの側壁に生ずる内側
方向のクリープ変形を防止でき、ホイール用キャップの
回転モーメントの低下にもとづく脱落を防止できる。又
枠材を金型の成形空間に予めセットしておくだけで枠材
をホイール用キャップの所定の位置に一体化することが
できるので、枠材の一体化作業が極めて容易となる。尚
、本発明において枠材１０をホイール用キャップの鍔に
一体化するとして説明したが、本発明はこれに限定され
ず、ホイール用キャップの側壁側に設けるようにしても
良く、又複数本の枠材を設けても良い。As explained above, according to the method for manufacturing a wheel cap according to the present invention, a ring-shaped frame material is set in advance in the molding space of an injection mold, and injection molding is performed in this state. Therefore, the frame material can prevent inward creep deformation occurring in the side wall of the wheel cap, and can prevent the wheel cap from falling off due to a decrease in rotational moment. Further, the frame material can be integrated at a predetermined position of the wheel cap by simply setting the frame material in advance in the molding space of the mold, so that the work of integrating the frame material is extremely easy. In the present invention, the frame material 10 has been described as being integrated with the flange of the wheel cap, but the present invention is not limited to this, and may be provided on the side wall side of the wheel cap, or may be provided on the side wall of the wheel cap. A frame material may be provided.

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

第１図、第２図は従来のホイール用キャップの製造方法
の一例を示す断面図及び平面図、第３図ないし第５図は
本発明方法により得られるホイール用キャップの一例を
示す断面図及び平面図、第６図ないし第９図は本発明に
よるホイール用キャップの製造方法の一実施例を示す断
面図、斜視図及び平面図、第１０図は本発明によるホイ
ール用キャップの製造方法の他の実施例を示す平面図で
ある。 １・・・ホイール用キャップ、３・・・ホイールディス
ク、４・・・鍔、５・・・ナツト、６・・・側壁、１ｏ
、・・・枠材、２１．２２・・・コア、２３・・・成形
空間、２５・・・底壁、２６・・・台、２７・・・ピン
、２８・・・窓。 特　許　出　願　人　　橋本フォーミング工業株式会社
代理人　　弁理士　宮　園　純　−1 and 2 are cross-sectional views and plan views showing an example of a conventional wheel cap manufacturing method, and FIGS. 3 to 5 are cross-sectional views and plan views showing an example of a wheel cap obtained by the method of the present invention. A plan view, FIGS. 6 to 9 are cross-sectional views, perspective views, and a plan view showing one embodiment of the method for manufacturing a wheel cap according to the present invention, and FIG. It is a top view showing an example of. 1... Wheel cap, 3... Wheel disc, 4... Tsuba, 5... Nut, 6... Side wall, 1o
,... Frame material, 21.22... Core, 23... Molding space, 25... Bottom wall, 26... Stand, 27... Pin, 28... Window. Patent applicant: Hashimoto Forming Industry Co., Ltd. Agent: Patent attorney: Jun Miyazono −

Claims (2)

【特許請求の範囲】[Claims] （１）インジスクシ１ン成形金型の成型空間に合成樹脂
を注入してほぼノーット状となったホイール用キャップ
を製造する方法において、上記成形空間におけるホイー
ル用キャップの開口端部を成形する空間側に予め弾性材
料からなるリング状となった枠材をセットしてインジェ
クション成形を行なうようにしたことを特徴とするホイ
ール用キャップの製造方法。(1) In a method for producing a nearly knot-shaped wheel cap by injecting a synthetic resin into the molding space of an injector mold, the space side of the molding space where the opening end of the wheel cap is molded. A method for manufacturing a wheel cap, characterized in that a ring-shaped frame material made of an elastic material is set in advance on a wheel cap, and injection molding is performed. （２）枠材に対し外側方向の応力を与えた状態で枠材を
成形空間にセットしてインジェクション成形を行なうよ
うにした特許請求の範囲第１項記載のホイール用キャッ
プの製造方法。(2) A method for manufacturing a wheel cap according to claim 1, wherein injection molding is performed by setting the frame member in a molding space while applying stress in an outward direction to the frame member.
JP21556581A 1981-12-25 1981-12-25 Manufacturing method of wheel cap Pending JPS58112801A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21556581A JPS58112801A (en) 1981-12-25 1981-12-25 Manufacturing method of wheel cap

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21556581A JPS58112801A (en) 1981-12-25 1981-12-25 Manufacturing method of wheel cap

Publications (1)

Publication Number Publication Date
JPS58112801A true JPS58112801A (en) 1983-07-05

Family

ID=16674530

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21556581A Pending JPS58112801A (en) 1981-12-25 1981-12-25 Manufacturing method of wheel cap

Country Status (1)

Country Link
JP (1) JPS58112801A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5445001A (en) * 1977-09-14 1979-04-10 Iseki & Co Ltd Wheel

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5445001A (en) * 1977-09-14 1979-04-10 Iseki & Co Ltd Wheel

Similar Documents

Publication Publication Date Title
JP4063907B2 (en) Push-in nut
US4081879A (en) Sealing member
US4015503A (en) Capped wheel nut
IE56663B1 (en) Insulated connector sockets and socket-manufacturing apparatus
US4744119A (en) Method of making a two-piece capped lug nut
EP0489505B1 (en) Metal weld stud and plastic clip
JP2009516340A (en) Conductive coupler
JPS58112801A (en) Manufacturing method of wheel cap
JPS6163415A (en) Method of molding elastic body part for shaft seal by mold and mold therefor
US2995782A (en) Method of forming lock and seal washers, nuts, and the like
US3285785A (en) Storage battery and method for making same
JPH0785822B2 (en) Method for manufacturing tripod type joint inner member
JP2779946B2 (en) Seal member
JP7356220B2 (en) How to join metal parts
JPS622331Y2 (en)
JP5973817B2 (en) Fastening structure and automobile
US1081451A (en) Process of making platinum-covered pins.
JPS6147350A (en) Manufacture of cap with pilfer-proof member
JPS58112802A (en) Manufacturing method of wheel cap
JPS6333008B2 (en)
US379214A (en) Capping axle-nuts
JPH063207B2 (en) Wheel nut manufacturing method
JP4132792B2 (en) Capillary structure used for wire bonding
US1623067A (en) Socket cap and method of making the same
US4841608A (en) Method of forming electrical termination on capacitor tops