JPH0211121Y2 - - Google Patents
Info
- Publication number
- JPH0211121Y2 JPH0211121Y2 JP1982014149U JP1414982U JPH0211121Y2 JP H0211121 Y2 JPH0211121 Y2 JP H0211121Y2 JP 1982014149 U JP1982014149 U JP 1982014149U JP 1414982 U JP1414982 U JP 1414982U JP H0211121 Y2 JPH0211121 Y2 JP H0211121Y2
- Authority
- JP
- Japan
- Prior art keywords
- saw
- pump
- chain
- passage
- oil
- 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
- 239000003921 oil Substances 0.000 claims description 22
- 239000010687 lubricating oil Substances 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000005461 lubrication Methods 0.000 description 10
- 230000035485 pulse pressure Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Reciprocating Pumps (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Description
【考案の詳細な説明】
本考案はチエンソーに関し、特に２サイクルエ
ンジンのクランクケース内脈圧を利用したソーチ
エン潤滑油の自動給油をエンジンの作業速度に応
じて行なうことを特徴とする。[Detailed Description of the Invention] The present invention relates to a chain saw, and is particularly characterized in that automatic supply of saw chain lubricating oil is carried out in accordance with the working speed of the engine using pulse pressure within the crankcase of a two-stroke engine.
一般にこの種給油は、クランク軸に設けたカム
とプランジヤポンプとの組合せによつて行われ、
自動給油と手動給油が選択的に行えるものであ
る。しかしこの給油はカムとプランジヤポンプと
の構造上の制限や操作の個人差等によりソーチエ
ンの潤滑に適したものと云えず、自動及び手動に
必要なそのための結合構造や機械加工精度、工数
等と関連したコストや量産性並びに保守整備等、
多面的な改善を要求されていた。 Generally, this type of oil supply is performed by a combination of a cam installed on the crankshaft and a plunger pump.
Automatic lubrication and manual lubrication can be performed selectively. However, this type of lubrication is not suitable for lubrication of saw chains due to structural limitations between the cam and plunger pump, individual differences in operation, etc., and the coupling structure, machining accuracy, man-hours, etc. required for automatic and manual systems. Related costs, mass productivity, maintenance, etc.
Multifaceted improvements were required.
本考案は、ソーチエンの潤滑という重大な問題
をソーチエンの作業速度に注目して解消せんとす
るもので、エンジンの作業速度に応じて制御する
ソレノイド弁でダイヤフラムポンプにクランクケ
ースの脈圧を伝達することを特徴とし、安価にし
て適切なソーチエンの自動潤滑を行なうチエンソ
ーを提供することを目的とする。 This invention aims to solve the serious problem of saw chain lubrication by focusing on the saw chain's working speed, and uses a solenoid valve that is controlled according to the engine's working speed to transmit the pulsating pressure of the crankcase to the diaphragm pump. It is an object of the present invention to provide a chain saw that is characterized by the following characteristics and that is inexpensive and that performs appropriate automatic lubrication of the saw chain.
以下に本考案の構成を図面の実施例に従つて説
明する。 The configuration of the present invention will be explained below according to the embodiments shown in the drawings.
第１図によれば、本実施例のチエンソー１はエ
ンジン部５を本体として枠体４を介して前ハンド
ル２と後ハンドル３とを有する。本体の前部に
は、燃料タンク（図示せず）と潤滑油タンク９を
配設している。本体エンジン部５はシリンダを後
方に向け横置し、上側に気化器系を下部に排気系
を設けている。エンジン部５のクランク軸６の一
側を本体の側方に延出して、遠心クラツチ装置を
介してチエン・スプロケツト（図示せず）を設
け、ソーチエン１３を駆動する。また第３図に示
す如く、ソーチエン１３を案内するための案内板
１２をクランクケース７側でボルト１４，１４に
よつて締着される。案内板１２の取付面には後述
する潤滑油ポンプからの給油孔１５を連通開口し
て案内板のソーチエン摺動溝Ｓに連通し案内板の
油孔１６を介して連通口１７が形成されている。
従来のチエンソー給油の目的は、案内板周辺を摺
走するソーチエンの潤滑と、鋸断中の負荷による
過熱防止である。しかし乍ら過乗の給油は鋸断く
ずを湿潤させて、随所に固結推積を起して汚損や
通風の阻害、その他の故障の原因となり好しくな
く、不経済であるだけでなくそのための対策が必
要である。従来は給油ポンプがクランク軸による
カム駆動を受けてポンプ作動による給油が行われ
た。従つて複雑な構造のポンプ装置や、これらに
対する調量装置が設けられていた。 According to FIG. 1, the chain saw 1 of this embodiment has an engine section 5 as a main body, and a front handle 2 and a rear handle 3 with a frame 4 interposed therebetween. A fuel tank (not shown) and a lubricating oil tank 9 are provided at the front of the main body. The main body engine section 5 is placed horizontally with the cylinder facing rearward, and has a carburetor system on the upper side and an exhaust system on the lower side. One side of the crankshaft 6 of the engine section 5 extends to the side of the main body, and a chain sprocket (not shown) is provided via a centrifugal clutch device to drive the saw chain 13. Further, as shown in FIG. 3, a guide plate 12 for guiding the saw chain 13 is fastened on the crankcase 7 side with bolts 14, 14. A communication port 17 is formed on the mounting surface of the guide plate 12 to communicate an oil supply hole 15 from a lubricating oil pump, which will be described later, to the saw chain sliding groove S of the guide plate through an oil hole 16 of the guide plate. There is.
The purpose of conventional chain saw lubrication is to lubricate the saw chain that slides around the guide plate and to prevent overheating due to the load during sawing. However, excessive lubrication is not only undesirable and uneconomical, but also causes the saw chips to become wet and solidify in various places, causing stains, obstruction of ventilation, and other malfunctions. Countermeasures are necessary. Conventionally, oil supply pumps were driven by a cam driven by a crankshaft, and oil was supplied by pump operation. Therefore, pump devices with complicated structures and metering devices for these pump devices have been provided.
本実施例のチエンソー１は枠体部４の上壁前部
にダイヤフラムポンプ１８を前記枠体によつて挾
持されている。ダイヤフラムポンプ１８はダイヤ
フラム１９を備え、これに固着するプランジヤ２
０を設け、不還弁２１を蓋体２２によつて本体に
締着する。かくて側孔２３を設けて吸入孔とし、
潤滑油タンク９内にホースとストレーナからなる
吸入管１０を投入連結して吸油可能にしてある。
前記蓋体２２は第１図に示す如く、機体の上面に
あるが、必要に応じて透明材料を用いることで油
の通過並びに作動状況を確認することができる。 The chain saw 1 of this embodiment has a diaphragm pump 18 held in the front part of the upper wall of the frame body 4 by the frame body. The diaphragm pump 18 includes a diaphragm 19 and a plunger 2 fixed to the diaphragm 19.
0 is provided, and the non-return valve 21 is fastened to the main body by the lid body 22. In this way, the side hole 23 is provided as a suction hole,
A suction pipe 10 consisting of a hose and a strainer is inserted into and connected to the lubricating oil tank 9 to enable oil absorption.
As shown in FIG. 1, the lid body 22 is located on the top surface of the machine body, and if necessary, by using a transparent material, it is possible to check the passage of oil and the operating status.
このように排出孔２４を設け接続管２５を介す
る等によつて、ソーチエン案内板の取付け面に設
けた給油孔１５に連通している。前記ポンプのダ
イヤフラム１９にエンジンクランクケース内の脈
圧を取口８及び連通管２６を介して導入する。連
通管２６はソレノイド形弁装置２７が配設されて
いて、針弁２８で通路２６を開閉する。ソレノイ
ド形弁装置２７はエンジンの自家発電装置３１の
電力で駆動されるが、予め設定した給油量／回転
数をマイクロコンピユーター２９の記憶とこの指
令開閉素子３０の作動を受けて必要な脈圧の設定
供給制御を行うことができる。これは、給油操作
を任意な極めて広範囲に自由な設定による操作を
可能にするもので、必要に応じて低速度で給油閉
止をして油の消費の節減に貢献することができ
る。 As described above, the discharge hole 24 is provided and communicates with the oil supply hole 15 provided on the mounting surface of the saw chain guide plate through the connecting pipe 25 or the like. The pulsating pressure within the engine crankcase is introduced into the diaphragm 19 of the pump via the port 8 and the communication pipe 26. A solenoid type valve device 27 is disposed in the communication pipe 26, and a needle valve 28 opens and closes the passage 26. The solenoid type valve device 27 is driven by the electric power of the engine's private power generation device 31, and the preset oil supply amount/rotation speed is stored in the microcomputer 29 and the required pulse pressure is controlled by the operation of the command opening/closing element 30. Setting supply control can be performed. This allows the oil supply operation to be freely set over an extremely wide range, and can contribute to reducing oil consumption by closing the oil supply at a low speed if necessary.
即ち、ダイヤフラムポンプ１８はエンジンの回
転数センサーに応動するマイクロコンピユーター
２９によつて作動し、マイクロコンピユーター２
９はフライホイール型マグネツトを電源とする。
回転数センサーの記憶は第５図に示すように×印
（仮定3000rpm）附近回転数数以下では、オイル
カツト又は微量給油で作動するが作業内容に応
じ、これ以上の回転数の上昇に伴い給油量が段階
増量で供給されるように指令される。このＡ及び
Ｂの性能種類は鋸断対象の樹種等によるための差
であつて軟質材についてはＢ例補給で足りるが、
硬質材に対してはＡ例の給油を行い鋸刃の加熱を
防止する等に配慮をしている。ダイヤフラムポン
プ１８は針弁２８の開閉でクランクケース内の脈
圧を伝達されて作動するので、第５図の油量Ｑは
第６図の如く針弁の開閉でポンプが間歇的に作動
される。 That is, the diaphragm pump 18 is operated by the microcomputer 29 which responds to the engine rotation speed sensor.
9 uses a flywheel type magnet as a power source.
As shown in Figure 5, the memory of the rotation speed sensor is that at rotation speeds below the x mark (assumed 3000 rpm), it will operate with oil cut or a small amount of oil supply, but depending on the work, the amount of oil supply will decrease as the rotation speed increases beyond this level. is ordered to be supplied in step increments. The performance types of A and B differ depending on the type of tree to be sawed, and for soft materials, replenishment of B example is sufficient.
For hard materials, consideration is given to lubricating as in Example A to prevent the saw blade from heating up. The diaphragm pump 18 is operated by transmitting pulse pressure in the crankcase by opening and closing the needle valve 28, so the oil amount Q shown in Fig. 5 is such that the pump is operated intermittently by opening and closing the needle valve as shown in Fig. 6. .
こゝで第２図及び第３図によつてソーチエン案
内板に対する給油の要領を説明すれば、クランク
ケース７の側面に設けた案内板取付け部７に給油
孔１５が導かれているが、該孔の開口面は案内板
１２の給油孔１６とチエン案内溝Ｓとの交叉によ
つて生ずる開口１７を通じて連通し、案内板の溝
に給油が可能である。 Now, the procedure for refueling the saw chain guide plate will be explained with reference to FIGS. 2 and 3. The opening surface of the hole communicates through an opening 17 created by the intersection of the oil supply hole 16 of the guide plate 12 and the chain guide groove S, so that oil can be supplied to the groove of the guide plate.
以上の如く本考案の構成によれば、予め設定し
た給油量／回転数を記憶させたマイクロコンピユ
ーターの指令により作動されるソレノイド弁を用
いてクランクケース内の脈圧をダイヤフラムポン
プに与えてソーチエン潤滑油を自動的に供給する
ので、高い精度や大きな加工時間を要するカム加
工等を要せず安価でポンプの取付け位置が自由な
チエンソーを提供できる。又、エンジンの作業速
度に応じて制御されるので、適切な潤滑が潤滑油
の浪費をなくすだけでなく、作業性の向上、保守
整備の容易等、多くの実用的効果を期待すること
ができる。 As described above, according to the configuration of the present invention, saw chain lubrication is achieved by applying pulse pressure in the crankcase to the diaphragm pump using a solenoid valve that is operated by a command from a microcomputer that stores preset oil supply amount/rotation speed. Since oil is automatically supplied, there is no need for cam machining, etc., which requires high accuracy or long machining time, making it possible to provide a chain saw that is inexpensive and allows the pump to be installed at any position. In addition, since it is controlled according to the operating speed of the engine, appropriate lubrication not only eliminates lubricant wastage, but also can be expected to have many practical effects such as improved workability and ease of maintenance. .
図面は本考案の一実施例を示すもので、第１図
はチエンソーの要部を断面した側面図、第２図は
案内板の要部側面図、第３図は第２図の−断
面図、第４図はソレノイド弁とその制御装置の概
細図、そして第５図及び第６図は給油作動特性図
である。
１……チエンソー、５……エンジン、７……ク
ランクケース、１３……ソーチエン、１８……ダ
イヤフラムポンプ、２７……ソレノイド弁。
The drawings show one embodiment of the present invention, and FIG. 1 is a cross-sectional side view of the main parts of the chain saw, FIG. 2 is a side view of the main parts of the guide plate, and FIG. 3 is a cross-sectional view of the main parts of the chain saw. , FIG. 4 is a schematic diagram of a solenoid valve and its control device, and FIGS. 5 and 6 are oil supply operation characteristic diagrams. 1... Chain saw, 5... Engine, 7... Crank case, 13... Saw chain, 18... Diaphragm pump, 27... Solenoid valve.
Claims (1)
通する通路と、該通路を介してクランクケース
内の脈圧を利用するダイヤフラムポンプと、該
ポンプへの脈圧の伝達を前記通路内の針弁を介
して制御するソレノイド弁と、該ソレノイド弁
を作動する予め設定した給油量／回転数を記憶
せしめたマイクロコンピユーターと、前記ポン
プに連通されソーチエンへエンジン回転数に応
じて予め設定した量の潤滑油をソーチエン摺動
溝に自動的に供給する通路とを有することを特
徴とするチエンソー。 (2) 前記ポンプの蓋体を透明部材としたことを特
徴とする実用新案登録請求の範囲第１項のチエ
ンソー。[Claims for Utility Model Registration] (1) A passage that communicates with the crankcase of a two-stroke engine, a diaphragm pump that utilizes the pulsating pressure in the crankcase through the passage, and transmission of the pulsating pressure to the pump. a solenoid valve that is controlled via a needle valve in the passage; a microcomputer that stores a preset oil supply amount/rotation speed that operates the solenoid valve; A chain saw comprising: a passage for automatically supplying a preset amount of lubricating oil to a saw chain sliding groove. (2) The chain saw according to claim 1 of the utility model registration, characterized in that the lid of the pump is made of a transparent member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1414982U JPS58117901U (en) | 1982-02-05 | 1982-02-05 | Chienso |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1414982U JPS58117901U (en) | 1982-02-05 | 1982-02-05 | Chienso |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58117901U JPS58117901U (en) | 1983-08-11 |
| JPH0211121Y2 true JPH0211121Y2 (en) | 1990-03-20 |
Family
ID=30026623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1414982U Granted JPS58117901U (en) | 1982-02-05 | 1982-02-05 | Chienso |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58117901U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5625687B2 (en) * | 2010-09-28 | 2014-11-19 | 日立工機株式会社 | Engine chain saw |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56502B2 (en) * | 1972-11-21 | 1981-01-08 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5935362Y2 (en) * | 1978-12-06 | 1984-09-29 | 株式会社共立 | Chienso |
| JPS5928801Y2 (en) * | 1979-06-15 | 1984-08-20 | ゼノア株式会社 | Chain saw lubricating oil supply device |
-
1982
- 1982-02-05 JP JP1414982U patent/JPS58117901U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56502B2 (en) * | 1972-11-21 | 1981-01-08 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58117901U (en) | 1983-08-11 |
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