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CN1200843C - 带内燃机自行车 - Google Patents

带内燃机自行车 Download PDF

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CN1200843C
CN1200843C CNB001011928A CN00101192A CN1200843C CN 1200843 C CN1200843 C CN 1200843C CN B001011928 A CNB001011928 A CN B001011928A CN 00101192 A CN00101192 A CN 00101192A CN 1200843 C CN1200843 C CN 1200843C
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internal combustion
combustion engine
muffler
bicycle
exhaust pipe
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CN1262198A (zh
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沼田英彦
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Honda Motor Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/16—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines characterised by use in vehicles
    • F02M35/162—Motorcycles; All-terrain vehicles, e.g. quads, snowmobiles; Small vehicles, e.g. forklifts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/08—Radiation
    • A61L2/10—Ultraviolet radiation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J9/00—Feeding-bottles in general
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/24—Apparatus using programmed or automatic operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
    • B62M6/10—Rider propelled cycles with auxiliary combustion engine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
    • B62M6/10—Rider propelled cycles with auxiliary combustion engine
    • B62M6/20—Rider propelled cycles with auxiliary combustion engine power-driven at crank shaft parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M7/00—Motorcycles characterised by position of motor or engine
    • B62M7/02—Motorcycles characterised by position of motor or engine with engine between front and rear wheels
    • B62M7/04—Motorcycles characterised by position of motor or engine with engine between front and rear wheels below the frame
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/38—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/084—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the exhaust gases flowing through the silencer two or more times longitudinally in opposite directions, e.g. using parallel or concentric tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1888—Construction facilitating manufacture, assembly, or disassembly the housing of the assembly consisting of two or more parts, e.g. two half-shells
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1205—Flow throttling or guiding
    • F02M35/1227—Flow throttling or guiding by using multiple air intake flow paths, e.g. bypass, honeycomb or pipes opening into an expansion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1205—Flow throttling or guiding
    • F02M35/1233—Flow throttling or guiding by using expansion chambers in the air intake flow path
    • A61L2103/23—
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
    • A61L2202/10—Apparatus features
    • A61L2202/11—Apparatus for generating biocidal substances, e.g. vaporisers, UV lamps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
    • A61L2202/10—Apparatus features
    • A61L2202/12—Apparatus for isolating biocidal substances from the environment
    • A61L2202/121—Sealings, e.g. doors, covers, valves, sluices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
    • A61L2202/10—Apparatus features
    • A61L2202/14—Means for controlling sterilisation processes, data processing, presentation and storage means, e.g. sensors, controllers, programs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2340/00—Dimensional characteristics of the exhaust system, e.g. length, diameter or volume of the exhaust apparatus; Spatial arrangements of exhaust apparatuses
    • F01N2340/04—Arrangement of the exhaust system relative to a vehicle or parts thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/22—Methods or apparatus for fitting, inserting or repairing different elements by welding or brazing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2490/00—Structure, disposition or shape of gas-chambers
    • F01N2490/02—Two or more expansion chambers in series connected by means of tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2490/00—Structure, disposition or shape of gas-chambers
    • F01N2490/02—Two or more expansion chambers in series connected by means of tubes
    • F01N2490/06—Two or more expansion chambers in series connected by means of tubes the gases flowing longitudinally from inlet to outlet in opposite directions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2490/00—Structure, disposition or shape of gas-chambers
    • F01N2490/16—Chambers with particular shapes, e.g. spherical
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
    • F01N2590/04—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for motorcycles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/02—Air cleaners

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Transportation (AREA)
  • Epidemiology (AREA)
  • Exhaust Silencers (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

提供一种将消音器设置在内燃机和后轮之间的带内燃机自行车，能够获得确保良好的排气效率的充足的排气管长度。带内燃机自行车具有可人力驱动的脚蹬，同时将内燃机设置在由主梁和鞍座柱管大致成V字形而成的车架下部，所述内燃机和后轮之间设置消音器50，从所述内燃机的排气孔延伸出的排气管45在所述内燃机的下方朝前后方向折返后与所述消音器50连接。

Description

带内燃机自行车
本发明涉及一种带内燃机自行车，特别涉及一种消音器的配置。
在车架下部配置内燃机的带内燃机自行车的例子正如图7所图示的日本特开平8-108875号公报所记载，车架由从前立管01延伸出的主梁02和鞍座柱管03形成V字形，在车架下部配置内燃机04。
主梁02和鞍座柱管03的V字形的弯折部装有燃料箱05，并在与鞍座柱管03的后方的后轮06之间配置上下为长度方向的载物筐07。
另外，在内燃机04和后轮06之间配置消音器08，从内燃机04的排气孔延伸出的排气管09在内燃机下方朝后大致水平延伸，并与前述消音器08连接。
对于带内燃机自行车要求基本上具有自行车的形状，车体宽度较窄，各仪器也安放在较窄的车体宽度内，以维持自行车轻巧的外观，在此，消音器08利用内燃机04和后轮06之间的空间配置，因此消音器08靠近内燃机04，排气管09变短，不能获得能确保良好排气效率的充足的排气管长度。
鉴于此，本发明目的在于提供一种在内燃机和后轮之间配置消音器的带内燃机自行车，它能获得确保良好排气效率的充足排气管长度。
为实现上述目的，本发明的带内燃机自行车，具有可以人力驱动的脚蹬，同时将内燃机设置在由主梁和鞍座柱管大致成V字形而成的车架下部，所述内燃机和后轮之间设置消音器，从所述内燃机的排气孔延伸出的排气管在所述内燃机的下方朝前后方向折返后与所述消音器连接。
由于排气管在内燃机下方朝前后方向折返后与配置在内燃机和后轮之间的消音器连接，故能够获得确保良好排气效率的充足的排气管长度。
权利要求2所述的发明是，在权利要求1所述的带内燃机自行车中，其特征在于所述排气管的折返部处于所述脚蹬宽度的左右宽度内。
排气管能够与脚蹬不干涉的同时，朝车体宽度方向突出，不会损坏自行车轻巧的外观。
权利要求3所述的发明是，在权利要求1或2所述的带内燃机自行车中，其特征在于，所述消音器由将隔板夹持在两半体之间成组合构成，任一半体上设置排气管和尾排气管。
只在一方的半体上设置排气管和尾排气管，而在另一方半体上没有必要安装任何部件，使组装简化。
权利要求4所述的发明是，在权利要求3所述的带内燃机自行车中，其特征在于，所述消音器由将隔板夹在成为上下半体的上侧半体和下侧半体之间的组合构成。
将排气管插入消音器的车体宽度方向位置的设定自由度变大，易于排气管的设计。
图1是本发明一实施例的带内燃机自行车的整体侧视图，
图2是空气滤清器及其附近构件的侧视图，
图3是沿图2III-III线的剖视图，
图4是沿图2IV-IV线的剖视图，
图5是排气管和消音器局剖的俯视图，
图6是沿图5VI-VI线的剖视图，
图7是以往带内燃机自行车的侧视图。
下面，根据图1-图6说明本发明的一实施例。
图1示出本实施例的带内燃机自行车1整体侧视图。
车架2从前立管3向后方略下斜地延伸出主梁4，在其后方设置略朝向后方延伸的鞍座柱管5，从而侧视看大致成V字形。
鞍座柱管5从与主梁4的接合部处稍微向下方延伸，左右一对后撑杆6从其下端部先向后方斜下延伸接着在中途水平弯曲之后向后方水平延伸，而左右一对后撑杆7从鞍座柱管5的上部朝后方斜下延伸，两后撑杆6，7的后端与后轮轴承部8结合。
后轮轴承部8轴支后轮9，后挡泥板10盖在后轮9的上侧。
另外，支架19可自由摆动地安装在后轮轴承部8上。
可自由旋转地轴支在前立管3上的前叉11的下端轴支着前轮12，而在上端安装着把手14。
前挡泥板13盖在前轮12的上侧。
燃料箱15从前述主梁4的与前立管3的接合部起直到中央跨设着，座16安装在鞍座柱管5的上端。
V字形车架2的下方悬挂着4冲程循环1缸的小型内燃机20。
托架17固定在主梁4与鞍座柱管5的接合部并朝下方垂设着，其下端通过支承轴17a支承内燃机20的曲轴箱20a上部的前侧装配架，突出设置在前述后撑杆6前部的托架18通过支承轴18a支承着内燃机20的后侧装配架。
内燃机20，汽缸20b从曲轴箱20a斜着向上前伸，而曲轴箱20a的后方与变速箱21成一体设置。
从变速箱21朝左右突出的输出轴21a上，通过单向离合器，设有脚蹬曲柄轴22和驱动链轮23，并在与设置在前述后轮轴承部8上的被动链轮24之间架设链条25。
脚蹬曲柄轴22的左右端上分别嵌装脚蹬臂26，其前端可自由旋转地轴支着脚蹬27。
于是，由于内燃机20的驱动，通过变速箱，驱动链轮23旋转，经链条25，使后轮9旋转，能够实现行走，同时，靠脚蹬脚蹬27，同样，经链条25，使后轮9旋转，也能实现行走。
在鞍座柱管5的后方与后轮9之间的空间设置收纳在共用盒32内的空气滤清器30和电池31。盒32为上下分体状，上部扁平箱体构成空气滤清器盒32a，下部扁平箱体成为电池接受盒32b，右侧具有通用的矩形开口，盖部件33塞住该开口，盖部件33靠2处螺钉34拧紧到盒32上。
参照图2，盒32侧面看大致为矩形，嵌装在前后由鞍座柱管5和后轮9围住而上下由后撑杆6，7围住的矩形空间内。
在盒32的前面和下表面分别突出设置安装片32c，32d，前侧的安装片32c通过螺钉·螺母35拧紧到从鞍座柱管5突出设置的托架5a上(参照图3)，而下侧的安装片32d通过螺钉·螺母36拧紧到从下侧后撑杆6突出设置的托架6a上(参照图4)，盒32装到车架2上。
如图3，图4所示，空气滤清器30是由空气滤清器盒32a与盖部件33之间夹持空气滤清器件30a而成为组合体，内部通过空气滤清器件30a分隔成右侧脏侧部分30b和左侧干净侧部分30c。
鞍座柱管5在空气滤清器30的前面中央沿上下方向延伸，从空气滤清器30的前面将鞍座柱管5夹持在右侧的吸入管37和左侧的连接管38之间而朝前方延伸。
在鞍座柱管5右侧的吸入管37穿过盖部件33，插入脏侧部分30b内，在鞍座柱管5左侧的连接管38穿过空气滤清器盒32a，插入干净侧部分30c。
从空气滤清器盒32a的前面左侧朝前方延伸出的连接管38，沿鞍座柱管5的左侧面朝下方弯曲后再次朝前方弯曲，并沿托架17的左侧面延伸，前端的接合部38a与配置在曲轴箱20a上方的汽化器40接合。
另外，连接管38处于比左侧脚蹬臂26更靠右侧的托架17之间。
于是，从斜着前倾的汽缸20b朝后方斜上延伸出的吸气管39与位于汽缸20b斜上方的汽化器40连接。
由于汽化器40从车体中央略靠近左侧设置，并且与空气滤清器30连接的连接管38是沿着鞍座柱管5的左侧面，故连接管38沿前后方向平直延伸，能减少吸气阻力。
另外，由于采用了空气滤清器30和电池31设置在共用盒32内，盖部件33塞住右侧共用开口的结构，不仅部件少、组装效率高，开启盖部件33，就能容易地进行空气滤清器件30a的更换等维修和电池31的更换等作业。
电池31是从车体右侧插入电池接受盒32b中，并用盖部件33盖住，因此从外部不易看到。
由于作为重物的电池31设置在空气滤清器30的下方，能够降低重心。
另外，在变速箱21的弯曲的后表面和后轮9之间的下方遂渐扩张开放的空间内设置消音器50。
垂直设置在消音器50的上侧盒51上的安装片56通过螺钉·螺母拧紧到从变速箱21的弯曲后表面突出设置的托架21b上，吊设着消音器50。
从汽缸20b的前侧排气孔延伸出的排气管45沿斜前倾的汽缸20b的下表面，向后方斜下延伸，进一步在曲轴箱20a的下方大致水平弯曲地向后方延伸，在消音器50之间前后方向一次S状绕曲地与消音器50连接。
如图5所示，排气管45从比车体中央线L-L′更靠右侧的排气孔延伸出，在朝后方斜下延伸的倾斜部45a处朝左侧移动，在大致水平弯曲的弯曲部45b，与车体中央线L-L′平行地朝后方延伸，形成第1直线部45c，在消音器50前面，通过右侧弯曲成U字形的弯曲部45d朝前方延伸，以形成第2直线部45e，在与前述弯曲部45b相同的前方位置处，再次通过右侧弯曲成U字形的弯曲部45f朝后方延伸，以形成第3直线部45g，第3直线部45g朝后方延伸，并保持该状态地插入消音器50中。
排气管45的第1，第2，第3直线部45c，45e，45g均处于沿着曲轴箱20a和变速箱21的下表面的同一水平面上，弯曲部45d，45f处于消音器50的左右宽度内，使整体的左右宽度变窄，位于左右脚蹬臂26之间。
如图5和图6所示，消音器50俯视为矩形，将隔离器53夹持在上侧盒51和下侧盒52之间，同时通过焊接成组合体，由隔离器53隔开的上侧空间为第1膨胀室51a，而下侧空间为第2膨胀室52a。
上侧盒51为前面沿着变速箱21弯曲后表面，而后表面沿后轮9的形状并收容在这两者之间。
排气管45插入消音器50的下侧盒52内的第2膨胀室52a内，其延长管部45h在内部朝后方延伸，弯曲成U字形，并由支承柱58支承，稍微朝前方延伸后，朝上方弯曲，穿过隔离器53，上端从隔离器53在上侧的第1膨胀室51a内开口。
另设置穿过隔离器53的连通管54，并与第1膨胀室51a和第2膨胀室52a连通，贯通下侧盒52的后壁设置的尾部排气管55与第2膨胀室52a和外部连通。
于是，内燃机20的废气沿前后S形地通过确保给定距离的排气管45，首先进入第1膨胀室51a，并由第1膨胀室51a经连通管54进入第2膨胀室52a，从尾管55朝外部排出。
由于消音器50不是将排气管45和尾排气管55设置在上侧盒51上，而是设置在下侧盒52上，使组装简单、模具数目减少，提高组装性能。
另外，由于上侧盒51和下侧盒52是夹持着隔离器53焊接的，能够确保气密性。
再有，由于消音器50为上下两半地设置第1膨胀室51a和第2膨胀室52a的结构，使排气管45插入消音器50内的车体左右宽度方向的位置的设定自由度变大，容易实现沿前后方向S形的排气管45的设计。
本带内燃机自行车1基本上是自行车的形状，要求车体宽度窄，各仪器也收放在窄的车体宽度内，并维持自行车轻巧的外观。
在此，消音器50不配置在后轮9的侧方，而是利用前方的变速箱21和后轮9之间的空间配置在左右中央位置上，因此，使汽缸20b的排气孔与消音器50的距离近、排气管变短，通过在曲轴箱20a和变速箱盒21的下方使排气管沿前后S形设置，确保了有良好的排气效率的充足的排气管长度。
另外S形的排气管45由于其弯曲部45d，45f处于脚蹬宽度内，使整体左右宽度变窄地收放在脚蹬臂26之间，排气管朝车体宽度方向突出，不会有损自行车轻巧的外观。
此外，空气滤清器30和电池31也利用鞍座柱管5和后轮9之间的未利用空间而配置在左右宽度方向中央位置上。
由于将配置在鞍座柱管5后方的空气滤清器30的鞍座柱管5从左右夹持其间的吸入管37和连接管38延伸出，吸入管37和连接管38能够不干涉鞍座柱管5地收放在所需要的左右宽度内。

Claims (3)

1.一种带内燃机自行车，具有可人力驱动的脚蹬，同时将内燃机设置在由主梁和鞍座柱管大致成V字形而成的车架下部，其特征在于，所述内燃机和后轮之间设置消音器，从所述内燃机的排气孔延伸出的排气管在所述内燃机的下方朝前后方向折返后与所述消音器连接，所述排气管的折返部处于所述脚蹬宽度的左右宽度内。
2.按照权利要求1所述的带内燃机自行车，其特征在于，所述消音器由将隔板夹持在两半的两半体之间成组合体构成，任一半体上都设置排气管和尾排气管。
3.按照权利要求2所述的带内燃机自行车，其特征在于，所述消音器由将隔板夹持在成为上下两半的上侧半体和下侧半体之间的组合体构成。
CNB001011928A 1999-01-29 2000-01-28 带内燃机自行车 Expired - Fee Related CN1200843C (zh)

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