JPS61263881A - Frame for motorcycle - Google Patents
Frame for motorcycleInfo
- Publication number
- JPS61263881A JPS61263881A JP60104481A JP10448185A JPS61263881A JP S61263881 A JPS61263881 A JP S61263881A JP 60104481 A JP60104481 A JP 60104481A JP 10448185 A JP10448185 A JP 10448185A JP S61263881 A JPS61263881 A JP S61263881A
- Authority
- JP
- Japan
- Prior art keywords
- box
- frame
- intake
- shaped part
- shaped portion
- 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
Links
- 238000005266 casting Methods 0.000 claims description 4
- 229910001234 light alloy Inorganic materials 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 2
- 239000002828 fuel tank Substances 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 6
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Landscapes
- Automatic Cycles, And Cycles In General (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は自動二輪車用のフレームに関する。[Detailed description of the invention] [Industrial application field] The present invention relates to frames for motorcycles.
この種のフレームにおいて、従来例えば特開昭５６−１
６０２７８号公報に示されるように、フロントフォーク
やエンジンを支持するメインフレームと、シートを支持
するりャフレームとを別体構造とし、これら両フレーム
相互をボルト等で着脱可能に連結したものが知られてい
る。In this type of frame, conventionally, for example, Japanese Patent Laid-Open No. 56-1
As shown in Japanese Patent No. 60278, it is known that a main frame that supports the front fork and engine and a rear frame that supports the seat are constructed separately, and these frames are removably connected to each other with bolts or the like. ing.
そして、この構造のフレームにあっては、シート下に位
置するりャフレームを中空の箱形に形成し、この箱形部
の内部空間を燃料タンクとして利用している。In the frame having this structure, the carrier frame located under the seat is formed into a hollow box shape, and the interior space of this box-shaped portion is used as a fuel tank.
ところが、上記リヤフレームは薄肉な板金製の板材を互
いに溶接して箱組みしているので、このリヤフレームの
内部空間を、エンジンの吸気通路に連なる吸気室（エア
クリーナ）として使用した場合には、リヤフレームの周
壁が薄肉であるが故に、吸気音そのものが透過し易くな
る。However, since the rear frame is made up of thin sheet metal plates welded together and assembled into a box, if the internal space of the rear frame is used as an intake chamber (air cleaner) connected to the engine intake passage, Since the peripheral wall of the rear frame is thin, the intake noise itself is easily transmitted.
しかも、特にこの種の吸気室は、吸気騒音を低下させる
ために容量が大きく、その分、各周壁の面積が大となる
ので、余計に面剛性が低くなってしまい、このため１１
周壁が吸気負圧の影響を受けて振動し、不快な共鳴音を
発する不具合があった。Moreover, this type of intake chamber in particular has a large capacity in order to reduce intake noise, and the area of each peripheral wall increases accordingly, resulting in an even lower surface rigidity.
There was a problem in which the surrounding wall vibrated under the influence of negative intake pressure, producing an unpleasant resonance sound.
そこで、本発明においては、リヤフレームを、軽合金材
料を用いて鋳造成形することにより中空のｉ形に形成し
、この箱形部の内部空間をエンジンの吸気通路に連なる
吸気室としたことを特徴とする。Therefore, in the present invention, the rear frame is formed into a hollow I-shape by casting using a light alloy material, and the internal space of this box-shaped part is used as an intake chamber connected to the intake passage of the engine. Features.
この構成によれば、箱形部の周壁が成形上必然的にある
程度の肉厚となるので、吸気音の透過が少な（なるのは
勿論、箱形部自体が高剛性となって振動し難くなる。し
たがって、箱形部の内部空間を吸気室として利用しても
、箱形部を含めたリヤフレームの共振を防止することが
でき、上記透過音の減少と相まって騒音を低く抑えるこ
とができる。According to this configuration, since the peripheral wall of the box-shaped part inevitably has a certain thickness due to molding, the transmission of intake sound is reduced (not only does the box-shaped part itself have high rigidity, making it difficult to vibrate). Therefore, even if the internal space of the box-shaped part is used as an intake chamber, resonance of the rear frame including the box-shaped part can be prevented, and in combination with the above-mentioned reduction in transmitted sound, noise can be kept low. .
以下本発明を、図面に示す一実施例にもとづいて説明す
る。The present invention will be explained below based on an embodiment shown in the drawings.
第５図中符号１はフレームであり、このフレーム１は前
半分を構成するメインフレーム２と後半分を構成するリ
ヤフレーム３とに分割される。メインフレーム２はフロ
ントフォーク４を枢支するステアリングヘッドパイプ５
と、このステアリングへラドバイブ５から後方に延びる
左右のメインバイブロと、このメインバイブロの下側を
後方に延びる左右のダウンチューブ７を主構成とするパ
イプフレームであり、これらメインバイブロとダウンチ
ューブ７とで囲まれる空間部分にエンジン８が搭載され
ている。また、メインバイブロの後端下部にはブラケッ
ト９が溶接されており、このブラケット９には後輪１０
を軸支したリヤアーム１１が揺動可能に枢支されている
。Reference numeral 1 in FIG. 5 is a frame, and this frame 1 is divided into a main frame 2 constituting the front half and a rear frame 3 constituting the rear half. The main frame 2 includes a steering head pipe 5 that pivotally supports the front fork 4.
It is a pipe frame mainly composed of left and right main vibros extending rearward from the Radvibe 5 to the steering wheel, and left and right down tubes 7 extending rearward from the bottom of the main vibros. The engine 8 is mounted in the space surrounded by. In addition, a bracket 9 is welded to the lower part of the rear end of the main vibro, and a rear wheel 10 is attached to this bracket 9.
A rear arm 11 is pivotably supported.
一方、リヤフレーム３はメインバイブロの後端部に連な
る箱形部１２と、この箱形部１２からさらに後方に延び
るシート支持パイプ１３とによって構成される。すなわ
ち、箱形部１２は例えばアルミ合金等の軽合金を用いて
中空の箱形に鋳造成形したもので、本実施例の場合は第
１図および第２図に示すように、左右の成形ブロック１
４ａ 、 １４ｂに二分割されている。成形ブロック１
４ａ 、 ’１４ｂは中空状をなすとともに、その周壁
が成形上ある程度の肉厚に形成されており、これら画成
形ブロック１４ａ。On the other hand, the rear frame 3 is constituted by a box-shaped portion 12 connected to the rear end of the main vibro, and a seat support pipe 13 extending further rearward from the box-shaped portion 12. That is, the box-shaped portion 12 is formed by casting into a hollow box shape using a light alloy such as an aluminum alloy, and in the case of this embodiment, as shown in FIGS. 1 and 2, the left and right molded blocks 1
It is divided into two parts, 4a and 14b. Molding block 1
4a and '14b are hollow, and their peripheral walls are formed to a certain degree of thickness for molding purposes, and these image forming blocks 14a.
１４ｂはその外周部の複数箇所に１ってボルト１５を禅
通し、この挿通端をナツト１６で締め上げることで互い
に衝合され、これらの間に所定容量の空間１７を形成し
ている。14b is abutted against each other by passing bolts 15 through multiple locations on its outer periphery and tightening the inserted ends with nuts 16, thereby forming a space 17 of a predetermined capacity between them.
なお、上記シート支持パイプ１３はボルト１５を介して
箱形部１２の後端部に共線めされている。The seat support pipe 13 is collinear with the rear end of the box-shaped portion 12 via a bolt 15.
箱形部１２の前端部はメインバイブロの後端部間に入り
込んで、エンジン８に連なる気化器２７の後方に位置し
ており、この前端部の複数箇所がメインフレーム２にボ
ルト締めされるとともに、第３図に示すように各成形ブ
ロック１４ａ 、 １４ｂの底面に突設した支持突部１
９．１９が、メインバイブロ。The front end of the box-shaped part 12 fits between the rear ends of the main vibro and is located behind the carburetor 27 connected to the engine 8, and the front end is bolted to the main frame 2 at multiple points. , as shown in FIG.
9.19 is the main vibro.
６間を結ぶクロスパイプ２０上のブラケット２１．２１
にボルト２３およびナツト２４を介して締付は固定され
ている。そして、箱形部１２は丁度後輪１０の斜め前方
に位置しており、その後輪１０と対面する後面は、上記
シート支持パイプ１３に取り付けたりャフエンダ２５に
連続して後輪１０の上方から前方にかけてを覆っている
。Bracket 21.21 on cross pipe 20 connecting between 6
Tightening is fixed via bolts 23 and nuts 24. The box-shaped portion 12 is located diagonally in front of the rear wheel 10, and the rear surface facing the rear wheel 10 is attached to the seat support pipe 13 or connected to the chaffender 25 and forwards from above the rear wheel 10. It covers the edges.
なお、箱形部１２の後面には、後輪１０との当りを避け
るための逃げ凹部２θが形成されている。Note that a relief recess 2θ is formed on the rear surface of the box-shaped portion 12 to avoid contact with the rear wheel 10.
箱形部１２の前面には、上記空１Ｗ１１７と気化器２７
とを結ぶジヨイント２８の接続口２９が開口されている
とともに、上面に開設した外気の吸込み口３０には吸入
ダクト３１が接続されており、このため、箱形部１２内
の空ｗ１７はエンジン８の吸気通路に連なる吸気室３２
を構成している。この吸気室３２内は隔壁３３により上
流室３４と下流室３５とに区画され、この隔！！３３に
は両！ｉ！３４．３５を連通させる通孔３６が開設され
ているとともに、この通孔３６の吸気上流側にはエアク
リーナエレメント３７が設置されている。On the front side of the box-shaped part 12, the above-mentioned air 1W117 and the carburetor 27 are installed.
The connection port 29 of the joint 28 is open, and the intake duct 31 is connected to the outside air intake port 30 opened on the top surface. An intake chamber 32 connected to the intake passage of
It consists of The inside of this intake chamber 32 is divided by a partition wall 33 into an upstream chamber 34 and a downstream chamber 35. ! Ryo on 33! i! A through hole 36 is provided for communicating between the air conditioners 34 and 35, and an air cleaner element 37 is installed on the intake upstream side of the through hole 36.
右側の成形ブ、ロック１４ｂにおける衝合面とは反対側
の外側面は、一体に閉塞されて車体の側方に面する意匠
面３８をなしているとともに、左側の成形ブロック１４
ａの外側面には上記下流室３５に連なる開口部３９が開
設されており、この開口部３９を通じてエアクリーナエ
レメント３７の着脱が行なわれる。また、開口部３９に
は側方からアルミ合金の鋳造成形量からなるサイドカバ
ー４０がねじ４１・・・を介して着脱可能に取り付けら
れており、このサイドカバー４０の取り付けにより、箱
形部１２が閉断面形状をなした、いわゆるモノコック構
造となっている。The outer surface of the right molded block and lock 14b on the opposite side from the abutting surface is integrally closed to form a design surface 38 facing the side of the vehicle body, and the left molded block 14
An opening 39 connected to the downstream chamber 35 is provided on the outer surface of the air cleaner element a, and the air cleaner element 37 is attached and detached through this opening 39. Further, a side cover 40 made of cast aluminum alloy is removably attached to the opening 39 from the side through screws 41 . It has a so-called monocoque structure with a closed cross-sectional shape.
なお、本実施例の場合、箱形部１２の直下にはリヤアー
ム１１の揺動ストロークを受ける１本の油圧緩衝器４２
が上下方向に沿って縦置きに配置されており、この油圧
緩衝器４２の上端部は箱形部１２の底面に設けた支持部
４３に連結されている。In the case of this embodiment, one hydraulic shock absorber 42 is provided directly below the box-shaped portion 12 to receive the swing stroke of the rear arm 11.
are arranged vertically along the vertical direction, and the upper end portion of this hydraulic shock absorber 42 is connected to a support portion 43 provided on the bottom surface of the box-shaped portion 12.
上記メインバイブロの上面には燃料タンク４４が設置さ
れており、この燃料タンク４４の後端部は箱形部１２の
前半部上面に被さっている。この場合、箱形部１２の上
面には支持突部４５が一体に突設されており、この支持
突部４５上に燃料タンク４４の後端に設けた７ランジ部
４６が衝合され、かつボルト４７によって締付は固定さ
れている。また、箱形部１２およびシート支持バイブ１
３上には、燃料タンク４４に連続してシート４８が設置
されており、箱形部１２の後端部上面には、シート４８
のシート底板４９を受ける荷重、受部５４が一体に突設
されている。シート底板４９の前端部には前方に向って
延びる係止片５１が突設されており、この係止片５１は
上記支持突部４５の後面に開口する差込み口５２内に差
込まれて、シート４８の前端の浮き上りを抑えている。A fuel tank 44 is installed on the upper surface of the main vibro, and the rear end of this fuel tank 44 covers the upper surface of the front half of the box-shaped portion 12. In this case, a support protrusion 45 is integrally provided on the upper surface of the box-shaped part 12, and a seven flange part 46 provided at the rear end of the fuel tank 44 is abutted on this support protrusion 45, and Tightening is fixed by bolts 47. In addition, the box-shaped portion 12 and the seat support vibe 1
3, a seat 48 is installed continuously to the fuel tank 44, and the seat 48 is installed on the upper surface of the rear end of the box-shaped part 12.
A load receiving portion 54 for receiving the seat bottom plate 49 is integrally provided. A locking piece 51 that extends forward is protruded from the front end of the seat bottom plate 49, and this locking piece 51 is inserted into an insertion opening 52 that opens at the rear surface of the support projection 45. This prevents the front end of the seat 48 from rising up.
また、本実施例の場合、箱形部１２自体が熱伝導性に優
れたアルミ合金製であるため、その前端側面部分に自己
発熱するレクチュファイヤレギュレータ５３が面接触状
態でねじ止めされており、この箱形部１２を放熱体とし
て利用している。In addition, in the case of this embodiment, since the box-shaped part 12 itself is made of aluminum alloy with excellent thermal conductivity, a self-heating rectifier regulator 53 is screwed to the front end side surface of the box-shaped part 12 in a surface contact state. , this box-shaped portion 12 is used as a heat radiator.
このような構成の一実施例によれば、リヤフレーム３の
箱形部１２を鋳造成形により構成したので、その周壁が
従来の板金−とした場合に比べて成形上肉厚となる。し
たがって、この肉厚となった分だけ、吸気音の透過が少
なくなるとともに、箱形部１２の周壁の剛性が高められ
、吸気負圧が作用しても振動し難くなる。よって、箱形
部１２の内部を吸入空気が流通する吸気室３２として利
用しても、箱形部１２の共振や共鳴を防止することがで
き、上記透過音が減少することと相まつて騒音を低く抑
えることができる。According to one embodiment of such a configuration, the box-shaped portion 12 of the rear frame 3 is formed by casting, so that the peripheral wall thereof is formed to be thicker than when it is formed from a conventional sheet metal. Therefore, the increased wall thickness reduces the transmission of intake noise, increases the rigidity of the peripheral wall of the box-shaped portion 12, and makes it difficult to vibrate even when negative intake pressure is applied. Therefore, even if the inside of the box-shaped part 12 is used as the intake chamber 32 through which intake air flows, it is possible to prevent the box-shaped part 12 from resonating or resonating, and in addition to reducing the transmitted sound, the noise can be reduced. can be kept low.
しかも、箱形部１２はアルミ合金等の軽合金製であるか
ら、吸気騒音上容量を大きくしても、重量の増加を最少
限に抑えることができる。Furthermore, since the box-shaped portion 12 is made of a light alloy such as an aluminum alloy, even if the capacity is increased in terms of intake noise, an increase in weight can be kept to a minimum.
また、リヤフレーム３自体を吸気室３２として利用すれ
ば、格別なエアクリーナが不要となり、その分、部品点
数が少なくなって組み立て性の向上やコストの低減が可
能となる。加えて、吸気室３２にフレーム１との当りを
避けるための逃げを形成する必要もないから、吸気室３
２の容量を充分に確保することができ、出力の向上や吸
気騒音の低減にも寄与する。Furthermore, if the rear frame 3 itself is used as the intake chamber 32, a special air cleaner is not required, and the number of parts is reduced accordingly, making it possible to improve assembly efficiency and reduce costs. In addition, since there is no need to form a relief in the intake chamber 32 to avoid contact with the frame 1, the intake chamber 3
2 capacity can be secured sufficiently, which also contributes to improving output and reducing intake noise.
なお、上述した実施例では箱形部を左右側としたが、上
下割あるいは前後割としても良いし、その内部構造も上
記実施例に制約されず、例えばオイルを収納するタンク
部や工具を収納する工具収納室を一体に区画形成しても
良い。In the above-mentioned embodiment, the box-shaped part is on the left and right sides, but it may be divided into upper and lower parts or front and rear parts, and its internal structure is not limited to the above-mentioned example. The tool storage chamber may be integrally divided.
以上詳述した本発明によれば、吸気音の透過が少なくな
ることに加えて、箱形部内体が高剛性となりて共振や共
鳴が防止されるから、箱形部内を吸気室として利用して
も、箱形部を含めたりャフレームからの騒音を低く抑え
ることができる。According to the present invention described in detail above, in addition to reducing the transmission of intake sound, the interior of the box-shaped part becomes highly rigid and resonance is prevented, so that the interior of the box-shaped part can be used as an intake chamber. Also, noise from the car frame including the box-shaped part can be suppressed to a low level.
図面は本発明の一実施例を示し、第１図は箱形部の斜視
図、第２図は箱形部の分解斜視図、第３図は第５図中ｍ
−ｍ５ｉに沿う断面図、第４図は第５図中ｒＶ−ＩＶ輪
に沿う断面居、第５図は自動二輪車の側面図、第６図は
りャフレーム、燃料タンクおよびシートの取り付は構造
を分解して示す側面図である。
２・・・メインフレーム、３・・・リヤフレーム、４・
・・フロントフォーク、８・・・エンジン、１２・・・
箱形部、３２・・・吸気室。
出願人代理人 弁理士 鈴 江 武 彦１１３ 図
ＩＨｚ、図
４（Ｊ Ｊコ ４Ｉ
第６図The drawings show one embodiment of the present invention; FIG. 1 is a perspective view of a box-shaped part, FIG. 2 is an exploded perspective view of the box-shaped part, and FIG.
-m5i, Figure 4 is a cross section along the rV-IV wheel in Figure 5, Figure 5 is a side view of the motorcycle, and Figure 6 shows the structure of the mounting of the carrier frame, fuel tank, and seat. FIG. 3 is an exploded side view. 2... Main frame, 3... Rear frame, 4...
...Front fork, 8...Engine, 12...
Box-shaped part, 32...Intake chamber. Applicant's representative Patent attorney Takehiko Suzue 113 Figure IHz, Figure 4 (JJCo 4I Figure 6)
Claims (1)
ームと、このメインフレームとは別体をなすとともに、
上記メインフレームから後方に向って延びるリヤフレー
ムとを備えた自動二輪車のフレームにおいて、 上記リヤフレームは軽合金材料を鋳造成形することによ
り中空の箱形に形成し、この箱形部の内部空間を上記エ
ンジンの吸気通路に連なる吸気室としたことを特徴とす
る自動二輪車のフレーム。[Claims] A main frame that supports the front fork and the engine is separate from the main frame, and
In the frame of a motorcycle, the frame includes a rear frame extending rearward from the main frame, wherein the rear frame is formed into a hollow box shape by casting a light alloy material, and the interior space of the box-shaped portion is A frame for a motorcycle, characterized in that the intake chamber is connected to the intake passage of the engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60104481A JPH0764296B2 (en) | 1985-05-16 | 1985-05-16 | Motorcycle frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60104481A JPH0764296B2 (en) | 1985-05-16 | 1985-05-16 | Motorcycle frame |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61263881A true JPS61263881A (en) | 1986-11-21 |
| JPH0764296B2 JPH0764296B2 (en) | 1995-07-12 |
Family
ID=14381751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60104481A Expired - Fee Related JPH0764296B2 (en) | 1985-05-16 | 1985-05-16 | Motorcycle frame |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0764296B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01111592A (en) * | 1987-10-27 | 1989-04-28 | Suzuki Motor Co Ltd | Pillion frame structure of motorcycle |
| JP2020032885A (en) * | 2018-08-30 | 2020-03-05 | 本田技研工業株式会社 | Vehicle body frame structure of saddle-riding type vehicle |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56111265U (en) * | 1980-01-30 | 1981-08-28 | ||
| JPS586957U (en) * | 1981-07-06 | 1983-01-17 | 本田技研工業株式会社 | Internal combustion engine intake noise muffling device |
-
1985
- 1985-05-16 JP JP60104481A patent/JPH0764296B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56111265U (en) * | 1980-01-30 | 1981-08-28 | ||
| JPS586957U (en) * | 1981-07-06 | 1983-01-17 | 本田技研工業株式会社 | Internal combustion engine intake noise muffling device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01111592A (en) * | 1987-10-27 | 1989-04-28 | Suzuki Motor Co Ltd | Pillion frame structure of motorcycle |
| JP2020032885A (en) * | 2018-08-30 | 2020-03-05 | 本田技研工業株式会社 | Vehicle body frame structure of saddle-riding type vehicle |
| US11161564B2 (en) | 2018-08-30 | 2021-11-02 | Honda Motor Co., Ltd. | Vehicle body frame structure of saddle riding vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0764296B2 (en) | 1995-07-12 |
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| LAPS | Cancellation because of no payment of annual fees |