JPS6133219Y2 - - Google Patents
Info
- Publication number
- JPS6133219Y2 JPS6133219Y2 JP1981085213U JP8521381U JPS6133219Y2 JP S6133219 Y2 JPS6133219 Y2 JP S6133219Y2 JP 1981085213 U JP1981085213 U JP 1981085213U JP 8521381 U JP8521381 U JP 8521381U JP S6133219 Y2 JPS6133219 Y2 JP S6133219Y2
- Authority
- JP
- Japan
- Prior art keywords
- cooling air
- air intake
- recoil starter
- annular lip
- intake member
- 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.)
- Expired
Links
- 238000001816 cooling Methods 0.000 claims description 30
- 239000007858 starting material Substances 0.000 claims description 14
- 238000002485 combustion reaction Methods 0.000 claims description 8
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 239000000428 dust Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000002265 prevention Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000010902 straw Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 241000519695 Ilex integra Species 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
【考案の詳細な説明】
本考案は、空冷式内燃機関の冷却風取入装置に
関するもので、殊に、当該内燃機関は、小型単気
筒ガソリン機関で、塵埃の多い場所でも使用可能
な作業機用のものに関する。[Detailed description of the invention] The present invention relates to a cooling air intake device for an air-cooled internal combustion engine, and in particular, the internal combustion engine is a small single-cylinder gasoline engine and is a working machine that can be used even in dusty areas. Concerning things for use.
従来のこの種の冷却風取入装置は、大量の冷却
風を導入するためリコイルスタータをフアンカバ
ーから突き出させて、リコイルスタータの蓋部、
および突き出したため構成された胴部の両者から
冷却風が取り入れるような構造になつている。 In this type of conventional cooling air intake device, in order to introduce a large amount of cooling air, the recoil starter is made to protrude from the fan cover.
The structure is such that cooling air is taken in from both the body and the protruding body.
このうち、前記の胴部に設けた冷却風取入部材
Ａは、第１図に示すように、第２図の本考案の実
施例である第２図も借りて説明すると、空冷内燃
機関のフアンカバー１にリコイルスタータＢを突
出させて設け、その両者の間に介在させているの
である。この冷却風取入部材Ａは、フアンカバー
１にリコイルスタータＢを間隔Ｃだけ設けて突き
出させるため、スチール製のスペーサパイプ２を
複数本、フアンカバー１とリコイルスタータＢの
蓋体３のフランジ３′との間に介在させ、締結ボ
ルト４を該パイプ２に挿通してフアンカバー１と
蓋体３とを固着している。したがつて、該パイプ
２には、安全のため防護サクを設けなければなら
ず、そのため、該パイプ２には、その両端を挾持
した状態のコ字状板５をそれぞれ溶着し、これら
コ字状板５が円周状に点在しているので、これら
のコ字状板５の外周側に、複数本の鉄線材６を円
形に形成して並列させて溶着している。もち論、
該鉄線材６は隙間７を保つて並列しているので、
この隙間７より冷却風が吸引導入される。 Of these, the cooling air intake member A provided in the body is, as shown in FIG. 1, for an air-cooled internal combustion engine. The recoil starter B is provided to protrude from the fan cover 1 and is interposed between the two. This cooling air intake member A has a plurality of steel spacer pipes 2 attached to the flanges 3 of the cover body 3 of the fan cover 1 and the recoil starter B in order to protrude the recoil starter B from the fan cover 1 with an interval C. A fastening bolt 4 is inserted into the pipe 2 to fix the fan cover 1 and the lid 3. Therefore, the pipe 2 must be provided with a protective shield for safety, and therefore, a U-shaped plate 5, which is held at both ends, is welded to the pipe 2. Since the shaped plates 5 are scattered around the circumference, a plurality of iron wire rods 6 are formed in a circular shape, arranged in parallel, and welded to the outer periphery of these U-shaped plates 5. Mochi theory,
Since the iron wire rods 6 are arranged in parallel with a gap 7 maintained,
Cooling air is sucked and introduced through this gap 7.
このように、従来の冷却風取入部材Ａは、形状
複雑で部品点数も多く、その製作のための加工工
数、特に溶接工数が多くコスト高になつていた。 As described above, the conventional cooling air intake member A has a complicated shape, has a large number of parts, and requires many processing steps, particularly welding steps, to produce it, resulting in high costs.
そこで、本考案は、従来のこれらの欠点を除く
ために案出されたもので、これを第２図および第
３図に示す実施例にしたがつて説明すれば、クラ
ンク軸８端に固着されたフライホイル９の外側面
の外周に、フアン羽根１０を一体延出し設けてい
る。フライホイル９の同内周には、リコイルスタ
ータＢを収納支持するドラム１１の底面を対面
し、複数のドラム支柱パイプ１２を介して該パイ
プ１２に挿通したドラム固定ボルト１３にて、フ
ライホイル９とドラム１１とを固定している。リ
コイルスタータＢは、ロープドラム１４のボス１
５をドラム１１の開口内に収納し、ロープドラム
１４の軸芯とクランク軸８の軸芯とを一致させた
状態で、支持片１６にて支持固定し、クランク軸
８の回転はそのままロープドラム１４の回転とな
るようにしている。 Therefore, the present invention was devised to eliminate these drawbacks of the conventional technology.This invention will be explained based on the embodiments shown in FIGS. 2 and 3. A fan blade 10 is integrally extended and provided on the outer periphery of the outer surface of the flywheel 9. The flywheel 9 is attached to the same inner periphery of the flywheel 9 by a drum fixing bolt 13 that faces the bottom surface of a drum 11 that accommodates and supports the recoil starter B, and is inserted into the pipe 12 via a plurality of drum support pipes 12. and the drum 11 are fixed. The recoil starter B is the boss 1 of the rope drum 14.
5 is housed in the opening of the drum 11, and with the axial center of the rope drum 14 and the axial center of the crankshaft 8 aligned, it is supported and fixed by the support piece 16, and the rotation of the crankshaft 8 is continued as it is. It is made to have 14 rotations.
次に、このドラム１１の開口側外周には、小径
円筒部１７と大径円筒部１８とを両側に（スポツ
ト溶接にて）固着した傘状回転防塵体１９におけ
る小径円筒部１７を、嵌合し固着している。該傘
状回転防塵体１９は、全面に多数の細孔２０を穿
孔しており、塵埃特にわらくずなどを含んだ冷却
風のスクリーンの作用をする。また、該回転防塵
体１９には、小径円筒部１７と大径円筒部１８と
の間にパンチングメタルからなる傾斜部１９′が
あり、この傾斜部１９′によつて冷却風用の細孔
２０が多くとれるので、通過面積を大とするとと
もに、該回転防塵体１９が高速回転していること
と相まつて、わらくずなどの遠心力による払い落
し作用もしている。 Next, the small diameter cylindrical part 17 of the umbrella-shaped rotating dustproof body 19, which has a small diameter cylindrical part 17 and a large diameter cylindrical part 18 fixed to both sides (by spot welding), is fitted onto the opening side outer periphery of this drum 11. It's stuck. The umbrella-shaped rotary dustproof body 19 has a large number of pores 20 perforated on its entire surface, and acts as a screen for cooling air containing dust, especially straw waste. Further, the rotary dustproof body 19 has an inclined part 19' made of punching metal between the small diameter cylindrical part 17 and the large diameter cylindrical part 18, and this inclined part 19' allows the small holes 20 for cooling air to be opened. Since a large amount of dust can be taken, the passage area is increased, and in conjunction with the high speed rotation of the rotary dustproof body 19, it also has the effect of blowing off straw waste etc. by centrifugal force.
殊に、本考案の冷却風取入部材Ａは、第３図に
示すように、従来例のコ字状板や鉄線材などを、
ポリプロピレン材で一体成形したもので、しか
も、前記ドラム１１の大径円筒部１８の周端を空
間２３を介して、嵌合する環状リツプ部２１をも
一体成形している。すなわち、大径円筒部１７の
周端内でソゴして環状リツプ部２１が挿入されて
いる。したがつて、この空間２３がラビリンスシ
ールの役目をし、回転するドラム１１と静止する
フアンカバー１の一部となつた環状リツプ部２１
との間でシール作用を果し、この空間２３より塵
埃が侵入するのを防いでいる。 In particular, the cooling air intake member A of the present invention, as shown in FIG.
It is integrally molded from a polypropylene material, and furthermore, an annular lip portion 21 that fits into the peripheral end of the large diameter cylindrical portion 18 of the drum 11 via a space 23 is also integrally molded. That is, the annular lip portion 21 is inserted tightly within the circumferential end of the large diameter cylindrical portion 17. Therefore, this space 23 acts as a labyrinth seal, and the annular lip portion 21 which is a part of the rotating drum 11 and the stationary fan cover 1 is separated.
A sealing effect is achieved between the space 23 and the space 23 to prevent dust from entering.
このような構成になつているので、機関運転時
には、フライホイル９に設けたフアン羽根１０の
回転で、機関冷却風は、リコイルスタータＢの蓋
体３に設けた網目（図示せず）と冷却風取入部材
ａの隙間７より吸引導入され、回転する傘状回転
防塵体１９でもつて、冷却風中の塵埃をスクリー
ンし、塵埃のない冷却風を機関のクランクケース
やシリンダヘツド（いずれも図示せ）の冷却フイ
ンに吹付け、熱をうばい機関反対側へ排出する。 With this configuration, during engine operation, the rotation of the fan blades 10 provided on the flywheel 9 allows the engine cooling air to flow through the mesh (not shown) provided on the lid 3 of the recoil starter B and the cooling air. The umbrella-shaped rotary dustproof body 19 that is sucked in through the gap 7 of the wind intake member a, screens dust in the cooling air, and directs the dust-free cooling air to the engine crankcase and cylinder head (both shown in the figure). The heat is blown onto the cooling fins of the engine (see below), and the heat is discharged to the opposite side of the engine.
なお、第３図を更に説明すれば、これは冷却風
取入部材Ａの単体で、その一部は断面で示されて
いるが、従来例のコ字状板５やスペーサパイプ２
のかわりに複数個の支柱部５′を、環状フイルタ
素子６の内側に吊設した状態で配置し、該支柱部
５の更に内側に環状リツプ部２１を配置し、これ
らを一体成形している。支柱部５′にはそれぞれ
ブツシユ２２を圧入して、このブツシユ２２に締
結ボルト４を挿入し、ボルト締めによつて変形し
ないようにしている。 To further explain FIG. 3, this is a single cooling air intake member A, a part of which is shown in cross section, but it is similar to the conventional U-shaped plate 5 and spacer pipe 2.
Instead, a plurality of support columns 5' are arranged in a suspended state inside the annular filter element 6, and an annular lip section 21 is arranged further inside the support support section 5, and these are integrally molded. . Bushes 22 are press-fitted into each of the support columns 5', and the fastening bolts 4 are inserted into the bushes 22 so that they do not deform when the bolts are tightened.
以上要するに本考案の構成は、フアンケース１
よりリコイルスタータＢを突き出して設け、該フ
アンケース１とリコイルスタータＢとの間に冷却
風取入部材Ａをスペーサとして介在させた空冷式
内燃機関の冷却風取入装置において、フアン前面
に設けられ、フアンと一体となつて回転する回転
防塵体１９の端縁に対しラビリンスシールを形成
する環状リツプ部２１を設け、該環状リツプ部２
１と前記一体成形した冷却風取入部材Ａとを更に
一体成形した空冷式内燃機関の冷却風取入装置で
あるから次の効果を奏する。 In summary, the configuration of the present invention is as follows: fan case 1
In a cooling air intake device for an air-cooled internal combustion engine, in which a recoil starter B is provided to protrude from the fan case 1, and a cooling air intake member A is interposed as a spacer between the fan case 1 and the recoil starter B. , an annular lip portion 21 is provided to form a labyrinth seal on the edge of the rotary dustproof body 19 that rotates together with the fan, and the annular lip portion 2
This cooling air intake device for an air-cooled internal combustion engine is obtained by further integrally molding the cooling air intake member A and the integrally molded cooling air intake member A, so that the following effects are achieved.
形状複雑で部品点数も多い冷却風取入部材Ａ
を一体成形し、更に、環状リツプ部２１とも一
体成形しているので、部品点数が大巾に低減で
き、しかも製作のための加工工数、殊に、溶接
工数が大巾（従来の1/5）に低減でき、部品品
単価が安価にできる。 Cooling air intake member A with a complex shape and many parts
Since it is integrally molded with the annular lip part 21, the number of parts can be greatly reduced, and the number of processing steps, especially the number of welding steps, for manufacturing is greatly reduced (1/5 of the conventional one). ), and the unit cost of parts can be reduced.
冷却風取入部材Ａは、冷却風を取入れるた
め、その取入口が開口しており、しかもリコイ
ルスタータＢの取付支持を一部担持しているの
で、強度を持たせる必要があるが、冷却風取入
部材Ａと環状のリツプ部２１とを一体成形した
ので、補強の必要性が満される。 Cooling air intake member A has an open intake port to take in cooling air, and also partially supports the mounting of recoil starter B, so it needs to have strength. Since the wind intake member A and the annular lip portion 21 are integrally molded, the need for reinforcement is satisfied.
回転防塵体の端縁と環状リツプ部とで形成す
るラビリンスシール用空間は、狭小であつて、
機関組付の際、細心の注意を必要とし、部品の
精度も高くなけれならないが、リコイルスター
タをフアンカバーへ組付の際のみ精密にすれば
よいので、その作業が簡素化できる。 The space for the labyrinth seal formed by the edge of the rotating dustproof body and the annular lip is narrow.
When assembling the engine, careful attention is required and the precision of the parts must be high, but since it is only necessary to be precise when assembling the recoil starter to the fan cover, the work can be simplified.
なお、本考案は、防塵、防土、防草、防芝な
どに適するので、自走自脱機、土入機、芝刈機
などの作業機用内燃機関に有益な考案である。 The present invention is suitable for dust prevention, soil prevention, weed prevention, turf prevention, etc., and is therefore useful for internal combustion engines for working machines such as self-propelled self-extraction machines, earth digging machines, and lawn mowers.
第１図は従来例の一部断面側面図、第２図は本
考案実施例の断面図、第３図は第２図の要部図を
示す。
１……フアンケース、１８……大径円筒部、１
９……傘状回転防塵体、２１……環状リツプ部、
Ａ……冷却風取入部材、Ｂ……リコイルスター
タ。
FIG. 1 is a partially sectional side view of a conventional example, FIG. 2 is a sectional view of an embodiment of the present invention, and FIG. 3 is a view of the main part of FIG. 2. 1...Fan case, 18...Large diameter cylindrical part, 1
9... Umbrella-shaped rotating dustproof body, 21... Annular lip part,
A... Cooling air intake member, B... Recoil starter.
Claims (1)
て設け、該フアンケースとリコイルスタータとの
間に冷却風取入部材をスペーサとして介在させた
空冷式内燃機関の冷却風取入装置において、フア
ン前面に設けられ、フアンと一体となつて回転す
る回転防塵体の端縁に対し、ラビリンスシールを
形成する環状リツプ部を設け、該環状リツプ部
と、前記の一体成形した冷却風取入部材とを、更
に一体成形した空冷式内燃機関の冷却風取入装
置。 In a cooling air intake device for an air-cooled internal combustion engine, a recoil starter is provided protruding from a fan case, and a cooling air intake member is interposed as a spacer between the fan case and the recoil starter. An annular lip part forming a labyrinth seal is provided on the edge of the rotating dustproof body which rotates integrally with the rotary dustproof body, and the annular lip part and the above-mentioned integrally molded cooling air intake member are further integrally molded. Cooling air intake device for air-cooled internal combustion engines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981085213U JPS6133219Y2 (en) | 1981-06-10 | 1981-06-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981085213U JPS6133219Y2 (en) | 1981-06-10 | 1981-06-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57196217U JPS57196217U (en) | 1982-12-13 |
| JPS6133219Y2 true JPS6133219Y2 (en) | 1986-09-29 |
Family
ID=29880507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981085213U Expired JPS6133219Y2 (en) | 1981-06-10 | 1981-06-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6133219Y2 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5842575Y2 (en) * | 1977-04-08 | 1983-09-27 | 川崎重工業株式会社 | Engine dust control device |
| JPS54130129U (en) * | 1978-03-01 | 1979-09-10 | ||
| JPS6021466Y2 (en) * | 1979-05-11 | 1985-06-26 | 川崎重工業株式会社 | Engine dust control device |
-
1981
- 1981-06-10 JP JP1981085213U patent/JPS6133219Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57196217U (en) | 1982-12-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3183899A (en) | Chaff-proof air intake arrangement | |
| CA2080216C (en) | External spark arrestor | |
| US7958855B2 (en) | Air-cooled V-type combustion engine | |
| US7950355B2 (en) | Air-cooled engine having improved dust preventive structure | |
| CA2051042C (en) | Air-cooled engine flywheel fan rotational debris inlet screen with radical clearance control ring and labyrinth rotational screen seal | |
| US4838908A (en) | Engine air intake screen assembly | |
| US20170328315A1 (en) | Air filter for an engine | |
| US2661810A (en) | Self-cleaning air precleaner | |
| JPS6133219Y2 (en) | ||
| JPH0442493Y2 (en) | ||
| US5167209A (en) | Engine filter assembly | |
| US3138910A (en) | Rotary mower engine muffler | |
| JPS6325306Y2 (en) | ||
| JPH0234421Y2 (en) | ||
| JPH0124347Y2 (en) | ||
| JPS6018580Y2 (en) | Dust control equipment for air-cooled internal combustion engines | |
| US4874959A (en) | Marine engine with louvered flywheel cover shroud | |
| JPS6021466Y2 (en) | Engine dust control device | |
| JPS6325303Y2 (en) | ||
| JP2525603Y2 (en) | Water pump | |
| JP2022143408A (en) | internal combustion engine | |
| JP3416008B2 (en) | Water-cooled vertical engine | |
| SU1751382A1 (en) | Air intake of internal combustion engine | |
| JPH0430345Y2 (en) | ||
| JPH0232819Y2 (en) |