JPH0299480A - Car body frame for motor bicycle and tricycle - Google Patents
Car body frame for motor bicycle and tricycleInfo
- Publication number
- JPH0299480A JPH0299480A JP25067588A JP25067588A JPH0299480A JP H0299480 A JPH0299480 A JP H0299480A JP 25067588 A JP25067588 A JP 25067588A JP 25067588 A JP25067588 A JP 25067588A JP H0299480 A JPH0299480 A JP H0299480A
- Authority
- JP
- Japan
- Prior art keywords
- main member
- sub
- core
- main
- body frame
- 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
Links
- 238000005266 casting Methods 0.000 claims abstract description 14
- 239000000725 suspension Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract 2
- 239000011159 matrix material Substances 0.000 abstract 1
- 238000005192 partition Methods 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 239000002689 soil Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Landscapes
- Automatic Cycles, And Cycles In General (AREA)
Abstract
Description
【発明の詳細な説明】
A1発明の目的
(1) 産業上の利用分野
本発明は自動二、三輪車用車体フレーム、特に、互に接
合される左右一対の鋳物製フレーム構成体を備え、各フ
レーム構成体は、前端部にヘッドパイプ構成部を、また
後端部にスイングアーム支持部をそれぞれ有するパイプ
状メイン部材と、そのメイン部材に一体に設けられたエ
ンジン吊持用サブ部材とよりなる車体フレームの改良に
関する。[Detailed Description of the Invention] A1 Object of the Invention (1) Industrial Application Field The present invention relates to body frames for motorcycles and tricycles, and in particular, includes a pair of left and right cast frame frames that are joined to each other, and The vehicle body consists of a pipe-shaped main member having a head pipe component at the front end and a swing arm support at the rear end, and an engine suspension sub-member integrally provided with the main member. Concerning frame improvements.
(2)従来の技術
従来、この種車体フレームとして、サブ部材を中実の断
面1字形に形成したものが知られている。(2) Prior Art Conventionally, as this type of vehicle body frame, one in which sub-members are formed into a solid single-shaped cross section is known.
(3)発明が解決しようとする課題
しかしながら前記サブ部材は、その強度を確保すべく厚
肉に形成されているので、重量増を来たし、車体フレー
ムの軽量化の要請に応するごとができないという問題が
ある。(3) Problems to be Solved by the Invention However, since the sub-members are formed thick in order to ensure their strength, the weight increases and it is not possible to meet the demand for weight reduction of the vehicle body frame. There's a problem.
本発明は前記問題を解決することのできる前記車体フレ
ームを提供することを目的とする。An object of the present invention is to provide the above-mentioned vehicle body frame which can solve the above-mentioned problems.
B7発明の構成
(1)課題を解決するための手段
本発明は、互に接合される左右一対の鋳物製フレーム構
成体を備え、各フレーム構成体は、前端部にヘンドパイ
ブ構成部を、また後端部にスイングアーム支持部をそれ
ぞれ有するバイブ状メイン部材と、該メイン部材に一体
に設けられたエンジン吊持用サブ部材とよりなる自動二
、三輪車用車体フレームにおいて、前記サブ部材をバイ
ブ状に形成すべく、該サブ部材の中空部を、前記メイン
部材の中空部形成用土中子から分岐する枝中子により形
成したことを特徴とする。B7 Structure of the Invention (1) Means for Solving the Problems The present invention comprises a pair of left and right cast frame structures that are joined to each other, each frame structure having a hend pipe structure at its front end and a hend pipe structure at its rear end. In a vehicle body frame for a motorcycle or three-wheeled vehicle comprising a vib-like main member each having a swing arm support portion at an end, and an engine suspension sub-member integrally provided with the main member, the sub-member is formed into a vib-like shape. In order to form the sub-member, the hollow part is formed by a branch core branching from the hollow part-forming soil core of the main member.
(2)作 用
前記のようにサブ部材をバイブ状に形成すると、その重
量を減じて車体フレームの軽量化が図られる。(2) Function When the sub-member is formed in the shape of a vibrator as described above, the weight of the sub-member is reduced, thereby reducing the weight of the vehicle body frame.
またサブ部材の中空部を、メイン部材の中空部形成用主
中子から分岐する枝中子により形成すると、鋳造時、鋳
型のキャビティにおけるメイン部材形成領域およびサブ
部材形成領域が一連に構成され、これにより両領域間の
溶湯の流通をスムーズに行い、湯回り不良に起因した形
状不完全、ガスの巻込みに起因したピンホールの発生等
の鋳造欠陥が回避される。Furthermore, if the hollow part of the sub member is formed by a branch core branching from the main core for forming the hollow part of the main member, the main member forming area and the sub member forming area in the cavity of the mold are configured in series during casting, As a result, the molten metal flows smoothly between the two regions, and casting defects such as incomplete shape due to poor molten metal flow and pinholes due to gas entrainment are avoided.
例えば、フレーム構成体を、メイン部材の外周壁にバイ
ブ状サブ部材の端部が連設されるように構成すると、そ
の連設部にはメイン部材の外周壁の一部によって、メイ
ン部材およびサブ部材の雨中空部を遮断する隔壁が形成
されることになる。For example, if the frame structure is configured such that the ends of the vibrator-like sub-members are connected to the outer circumferential wall of the main member, the main member and the sub-members are connected to each other by a part of the outer circumferential wall of the main member. A partition wall is formed that blocks the rain hollow part of the member.
このようなフレーム構成体を鋳造すると、キャビティの
隔壁形成領域では溶湯の乱流を生じてピンホールを発生
し易(、また隔壁形成領域の容積増に起因して溶湯の凝
固に伴いその周面に引けを生じ、これにより前記連設部
が不連続形状となってその部分に応力が集中し易くなる
。When such a frame structure is cast, a turbulent flow of the molten metal occurs in the partition forming area of the cavity, which tends to generate pinholes (also, due to an increase in the volume of the partition forming area, the surrounding surface of the molten metal solidifies). As a result, the continuous portion becomes discontinuous, and stress tends to concentrate in that portion.
本発明においては、前記隔壁は存しないので前記問題を
生じることがない。In the present invention, the above-mentioned partition wall does not exist, so the above-mentioned problem does not occur.
(3)実施例
第1図は自動二輪車Mを示し、その車体フレームFは第
2〜第7図に詳細に示されている。車体フレームI?は
、互に接合される左右一対の鋳物、図示例ではアルミニ
ウム合金鋳物製フレーム構成体l3.1オをO’tηえ
、各フレーム構成体13,1、は、前端部にヘッドバイ
ブ構成部2を、また後端部にスイングアーム支持部3を
それぞれ有するバイブ状メイン部材4と、そのメイン部
材4に一体に設けられたエンジン吊持用サブ部材5とよ
り構成される。(3) Embodiment FIG. 1 shows a motorcycle M, and its body frame F is shown in detail in FIGS. 2 to 7. Body frame I? A pair of left and right castings (in the illustrated example, aluminum alloy castings) are connected to each other, and each frame structure 13,1 has a head vibrator component 2 at its front end. It also consists of a vibrator-like main member 4 each having a swing arm support portion 3 at its rear end, and an engine suspension sub-member 5 integrally provided with the main member 4.
第2〜第4図に明示するように、各フレーム構成体14
,1□において、その前端部側の相対向する接合面6は
、燃料タンク支持用突起pを挟んで互に衝合されて溶接
され、また樋状をなすヘッドバイブ構成部2は、それら
の上、下端部にそれぞれ上、下部カラー7、.7.を挟
んだ状態にて溶接され、これによりヘッドバイブ8が構
成される。As clearly shown in FIGS. 2 to 4, each frame structure 14
, 1 □, the opposing joint surfaces 6 on the front end side are abutted and welded together with the fuel tank supporting protrusion p in between, and the gutter-shaped head vibe component 2 is Upper and lower collars 7, . 7. are welded in a state where they are sandwiched, thereby forming the head vibrator 8.
第5図に明示するように、両フレーム構成体14.12
のスイングアーム支持部3下端に下部クロス部材9.の
両端部が溶接され、その下部クロス部材9□にスイング
アーム10が設けられる(第1図)、また両フレーム構
成体13.1□のスイングアーム支持部3上端に上部ク
ロス部材91の両端部が溶接され、その上部クロス部材
9にシート支持ステーtiが取付けられる(第1図)。Both frame structures 14.12 as shown in FIG.
A lower cross member 9 is attached to the lower end of the swing arm support portion 3. The swing arm 10 is attached to the lower cross member 9□ (Fig. 1), and both ends of the upper cross member 91 are welded to the upper ends of the swing arm support portions 3 of both frame structures 13.1□. is welded, and a seat support stay ti is attached to the upper cross member 9 (FIG. 1).
第2図に明示するようにサブ部材5は略■字形をなし、
その両端部がメイン部材4の下面に連設されている。各
サブ部材4の底部外面に支持ブラケット12が突設され
、各支持ブラケット12の一対の支持孔13,14、各
スイングアーム支持部3下端の支持孔15およびその」
二部の支持孔16が、エンジンEを吊持するために用い
られる(第1図)。As clearly shown in FIG. 2, the sub member 5 has a substantially ■ shape,
Both ends thereof are connected to the lower surface of the main member 4. A support bracket 12 is protruded from the bottom outer surface of each sub-member 4, and includes a pair of support holes 13 and 14 of each support bracket 12, a support hole 15 at the lower end of each swing arm support part 3, and a support hole 15 at the lower end of each swing arm support part 3.
Two support holes 16 are used to suspend the engine E (FIG. 1).
サブ部材5はバイブ状に形成され、その中空部17の両
端はメイン部材4の中空部18に開放され、雨中空部1
7.18の境界には隔壁が存しないようになっている。The sub member 5 is formed in the shape of a vibrator, and both ends of its hollow part 17 are open to the hollow part 18 of the main member 4, and the rain hollow part 1
No partition wall exists on the boundary of 7.18.
このようにサブ部材5をバイブ状に形成すると、その重
量を滅じて車体フレームFの軽量化を図ることができる
。By forming the sub-member 5 into a vibrator shape in this way, the weight of the sub-member 5 can be reduced and the weight of the vehicle body frame F can be reduced.
メイン部材4において、サブ部材5の両連設部間の中間
部およびサブ部材5において、後部連設部近傍に、それ
ぞれ薄肉の仕切り壁19.20が設けられているが、こ
れら仕切り壁19,20は、分割式砂中子を用いてメイ
ン部材4およびサブ部材5の雨中空部18.17を形成
することに起因する。またメイン部材4およびサブ部材
5にそれぞれ複数の砂抜き孔21.22が形成されてい
るが、これら砂抜き孔21.,22はゴム製蓋体等によ
り閉鎖される。In the main member 4, thin partition walls 19 and 20 are provided in the intermediate portion between both the connecting parts of the sub member 5 and in the vicinity of the rear connecting part in the sub member 5, respectively. 20 is due to the fact that the rain hollow parts 18 and 17 of the main member 4 and the sub-member 5 are formed using a split sand core. Further, a plurality of sand removal holes 21 and 22 are formed in the main member 4 and the sub member 5, respectively. , 22 are closed with rubber lids or the like.
第8図は左側フレー1、構成体11の鋳造作業の概略を
示し、メイン部材4の中空部18を形成する土中子23
と、その主中子23から分岐してサブ部材5の中空部1
7を形成する枝中子24とを備えた第1.第2砂中子2
5..25□が鋳型26の凹所27内に、両生中子23
の端面および両枝中子24の端面を対向させて設置され
る。この場合、両対向端面間の間隔d、、d!は狭く設
定される。FIG. 8 schematically shows the casting work of the left side flange 1 and the structural body 11, and shows the soil core 23 forming the hollow part 18 of the main member 4.
and the hollow part 1 of the sub-member 5 branching from the main core 23.
7 and a branch core 24 forming a first. Second sand core 2
5. .. 25□ is the amphibious core 23 in the recess 27 of the mold 26.
The end faces of the branch cores 24 and the end faces of both branch cores 24 are placed opposite to each other. In this case, the distance between both opposing end faces d,,d! is set narrowly.
これにより第1.第2砂中子25..25□と凹所27
間にフレーム構成体形成用キャビティCが画成され、そ
のキャビティCは、両生中子23によるメイン部材4の
中空部形成領域Caと、両枝中子24によるサブ部材5
の中空部形成領域Cbとを備える。This leads to the first. Second sand core 25. .. 25□ and recess 27
A frame structure forming cavity C is defined in between, and the cavity C includes a hollow part forming area Ca of the main member 4 formed by the double core 23 and a sub member 5 formed by the double branch cores 24.
The hollow part forming region Cb is provided.
鋳込み時には、アルミニウム合金の溶湯を図示しない湯
口を通じてキャビティCに注入する。この場合、第1.
第2砂中子25..25□における土中子23および枝
中子24の一体化により、メイン部材形成領域Caおよ
びサブ部材形成領域cb間が一連に構成されているので
、両頭域Ca。During casting, molten aluminum alloy is injected into the cavity C through a sprue (not shown). In this case, 1.
Second sand core 25. .. Due to the integration of the soil core 23 and the branch core 24 in 25□, the main member forming area Ca and the sub member forming area cb are configured in series, so that a double-headed area Ca is formed.
cb間の溶湯の流通がスムーズに行われ、これにより湯
回り不良に起因した形状不完全、ガスの巻込みに起因し
たピンホールの発生等の鋳造欠陥が回避され、高品質で
高強度なフレーム構成体11が鋳造される。The molten metal flows smoothly between the cbs, thereby avoiding casting defects such as incomplete shapes due to poor molten metal flow and pinholes caused by gas entrainment, resulting in high-quality and high-strength frames. Component 11 is cast.
この鋳造により、両生中子23の端面間および両枝中子
24の端面間に、それぞれ仕切り壁1920が形成され
るが、再対面端面間の間隔dl。As a result of this casting, partition walls 1920 are formed between the end faces of both live cores 23 and between the end faces of both branch cores 24, but the distance dl between the end faces facing each other.
d2が狭いことに起因してそれらの間に存する湯量が少
なく、したがってその溶湯の凝固に伴う引けが両仕切り
壁19,20の周囲に影響を及ぼすことはない。むしろ
、これら仕切り壁19,20によって、バイブ状フレー
ム構成体1.21□内を伝播するエンジン騒音を遮断す
るといった消音効果が得られる。Because d2 is narrow, the amount of molten metal existing between them is small, and therefore the shrinkage caused by solidification of the molten metal does not affect the surroundings of both partition walls 19 and 20. Rather, these partition walls 19, 20 provide a noise-muffling effect of blocking engine noise propagating within the vibrator frame structure 1.21□.
なお、本発明は自動三輪車用車体フレームにも適用され
る。Note that the present invention is also applied to a body frame for a tricycle.
C0発明の効果
本発明によれば、軽量であると共に高品質で高強度な鋳
物製フレーム構成体を備え、軽量化の要請に応すること
が可能な自動二、三輪車用車体フレームを提供すること
ができる。C0 Effects of the Invention According to the present invention, it is possible to provide a body frame for motorcycles and tricycles that is lightweight, has a high-quality and high-strength casting frame structure, and is capable of meeting demands for weight reduction. Can be done.
【図面の簡単な説明】
図面は本発明σ戸−実施例を示し、第1図は自動−輪車
の側面図、第2図は車体フレームの側面図、第3.第4
.第5図は第2図III、 IV、 V矢視図、第6.
第7図は第2図v+−vi線、VU−■線断面図、第8
図は鋳造作業の概略を示す断面図であり、第2図に対応
する。
E・・・エンジン、F・・・車体フレーム、1.、.1
□・・・フレーJ・構成体、2・・・ヘッドバイブ構成
部、3・・・スイングアーム支持部、4・・・メイン部
材、5・・・(Jブ部材、17.18・・・中空部、2
3・・・主中子、24・・・枝中子
特
許
出
願
人
本田技研工業株式会社
代
理
人
斤
理
士
落 合 健
同
1) 中 隆 秀BRIEF DESCRIPTION OF THE DRAWINGS The drawings show an embodiment of the present invention; FIG. 1 is a side view of a motor vehicle, FIG. 2 is a side view of a vehicle body frame, and FIG. 3 is a side view of a vehicle body frame. Fourth
.. Figure 5 is a view from the arrows III, IV, and V in Figure 2, and Figure 6.
Figure 7 is a cross-sectional view of Figure 2 along lines v+-vi and VU-■, and Figure 8.
The figure is a sectional view showing an outline of the casting operation, and corresponds to FIG. 2. E...Engine, F...Vehicle frame, 1. ,.. 1
□...Frame J/structure, 2...Head vibe component, 3...Swing arm support part, 4...Main member, 5...(J part, 17.18... Hollow part, 2
3... Main core, 24... Branch core Patent applicant Honda Motor Co., Ltd. Agent Kendo Ochiai 1) Takahide Naka
Claims (1)
、各フレーム構成体は、前端部にヘッドパイプ構成部を
、また後端部にスイングアーム支持部をそれぞれ有する
パイプ状メイン部材と、該メイン部材に一体に設けられ
たエンジン吊持用サブ部材とよりなる自動二、三輪車用
車体フレームにおいて、前記サブ部材をパイプ状に形成
すべく、該サブ部材の中空部を、前記メイン部材の中空
部形成用主中子から分岐する枝中子により形成したこと
を特徴とする自動二、三輪車用車体フレームA pair of left and right casting frame structures are joined to each other, and each frame structure includes a pipe-shaped main member having a head pipe structure at the front end and a swing arm support at the rear end, and In a vehicle body frame for a motorcycle or tricycle that includes an engine suspension sub-member integrally provided with a main member, in order to form the sub-member into a pipe shape, the hollow portion of the sub-member is connected to the hollow portion of the main member. A body frame for motorcycles and tricycles, characterized in that it is formed by branch cores branching from a main core for forming parts.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP25067588A JPH0299480A (en) | 1988-10-04 | 1988-10-04 | Car body frame for motor bicycle and tricycle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP25067588A JPH0299480A (en) | 1988-10-04 | 1988-10-04 | Car body frame for motor bicycle and tricycle |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0299480A true JPH0299480A (en) | 1990-04-11 |
Family
ID=17211375
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP25067588A Pending JPH0299480A (en) | 1988-10-04 | 1988-10-04 | Car body frame for motor bicycle and tricycle |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0299480A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19754378A1 (en) * | 1997-12-09 | 1999-06-17 | Thermoplastik Erich Mueller Gm | Process for manufacturing a frame for two-wheelers |
JP2007144500A (en) * | 2005-11-30 | 2007-06-14 | Honda Motor Co Ltd | Car body frame, casting with die casting, die for casting with die casting and casting method for die casting |
-
1988
- 1988-10-04 JP JP25067588A patent/JPH0299480A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19754378A1 (en) * | 1997-12-09 | 1999-06-17 | Thermoplastik Erich Mueller Gm | Process for manufacturing a frame for two-wheelers |
JP2007144500A (en) * | 2005-11-30 | 2007-06-14 | Honda Motor Co Ltd | Car body frame, casting with die casting, die for casting with die casting and casting method for die casting |
JP4619932B2 (en) * | 2005-11-30 | 2011-01-26 | 本田技研工業株式会社 | Body frame, die cast casting, die casting die, die casting method |
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