JPS6113681Y2 - - Google Patents
Info
- Publication number
- JPS6113681Y2 JPS6113681Y2 JP14962480U JP14962480U JPS6113681Y2 JP S6113681 Y2 JPS6113681 Y2 JP S6113681Y2 JP 14962480 U JP14962480 U JP 14962480U JP 14962480 U JP14962480 U JP 14962480U JP S6113681 Y2 JPS6113681 Y2 JP S6113681Y2
- Authority
- JP
- Japan
- Prior art keywords
- arm
- nut
- rocker
- seat
- rocker arm
- 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
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Landscapes
- Valve-Gear Or Valve Arrangements (AREA)
Description
【考案の詳細な説明】
本考案は内熱機関の動弁系、詳しくはアルミニ
ウム製ロツカアームに使用されるナツト座面保護
プレートに関する。[Detailed Description of the Invention] The present invention relates to a valve train of an internal heat engine, and more particularly to a nut seat protection plate used for an aluminum rocker arm.
従来、内熱機関動弁系におけるロツカアームは
鋳鉄製若しくは鍛造で作られていた。しかしエン
ジンの軽量化に伴ない、アルミニウム材を用いた
ものが最近見受けられるようになつてきた。しか
しながら、アルミニウム製のロツカアームとする
とこれに形成されるナツト座面（即ち、吸、排気
弁の駆動用アジヤストスクリユナツト座面）は、
鉄製のロツカアームと較べて座屈強度が低くな
る。そこでアルミニウム製ロツカアームを使用す
る場合には鉄製ロツカアーム用のナツトより大き
な座面のナツトを使用することによりナツト座面
の座屈強度低下に対処していた。しかし、かよう
に大きなナツトを使用するとナツトの重量が増す
ので軽量化の実効が上らなくなると共に動弁系の
慣性重量が増大する。 Conventionally, locking arms in internal heat engine valve systems have been made of cast iron or forged. However, as engines become lighter, engines made of aluminum have recently begun to appear. However, if the rocker arm is made of aluminum, the nut seat formed on it (i.e., the adjuster screw nut seat for driving the intake and exhaust valves) will be
Buckling strength is lower than that of iron rocker arms. Therefore, when using an aluminum rocker arm, the reduction in buckling strength of the nut seating surface has been addressed by using a nut with a larger seating surface than the nut for the iron rocker arm. However, if such a large nut is used, the weight of the nut increases, making the weight reduction less effective and increasing the inertia weight of the valve train.
本考案はかかる問題を解決し、大径のナツトや
フランジナツト等の重量の大きいナツトを使用す
ることなく、しかしアルミニウム母材の座屈防止
が図れる構造を提供することにある。 The object of the present invention is to solve this problem and provide a structure that can prevent buckling of the aluminum base material without using heavy nuts such as large-diameter nuts or flange nuts.
以下図面によつて説明すると、１０はアルミニ
ウム製ロツカアームでロツカシフト１２に挿通さ
れている。ロツカアーム１０は、ロツカシヤフト
１２上にねじ１４で固定したロツカサポート１６
にばね１８によつて押付けられている。ロツカア
ーム１０は一端でカム従動面であるロツカアーム
パツド２０を有し、図示しないカムシヤフト上の
カムと当接する。ロツカアーム１０の他端にはア
ジヤストスクリユナツト２２がねじ込まれ、その
下端は図示しない吸，排気弁に当接している。ア
ジヤストスクリユ２０の上端にはナツト２４が嵌
合され、アジヤストスクリユ２２を適正な位置に
ロツクしている。 Described below with reference to the drawings, reference numeral 10 denotes an aluminum rocker arm that is inserted into the rocker shift 12. The rocker arm 10 includes a rocker support 16 fixed on the rocker shaft 12 with screws 14.
is pressed by a spring 18. The rocker arm 10 has a rocker arm pad 20 at one end, which is a cam driven surface, and comes into contact with a cam on a camshaft (not shown). An adjuster screw nut 22 is screwed into the other end of the locker arm 10, and its lower end abuts on intake and exhaust valves (not shown). A nut 24 is fitted to the upper end of the adjusting screw 20 to lock the adjusting screw 22 in a proper position.
本考案によれば座面保護プレート３０は薄い鋼
板から作られ、第１の環状部３２と、第２の環状
部３４と、これらの第１及び第２の環状部をつな
ぐ腕部３６とより成る。第１の環状部３２はワツ
シヤとして機能するものでロツカアーム１０の座
面１０１とナツト２４との間に位置する。第２の
環状部３４はロツカシヤフト１２に挿通され、一
方はロツカサポート１６とロツカアーム１０との
間、他方はロツカアーム１０とばね１８との間に
位置している。尚、図では腕部３６は一対設けら
れているが、一個でも良い。 According to the present invention, the seat protection plate 30 is made of a thin steel plate and includes a first annular portion 32, a second annular portion 34, and an arm portion 36 connecting these first and second annular portions. Become. The first annular portion 32 functions as a washer and is located between the seat surface 101 of the rocker arm 10 and the nut 24. The second annular portion 34 is inserted through the rocker shaft 12 and is located between the rocker support 16 and the rocker arm 10 on one side and between the rocker arm 10 and the spring 18 on the other hand. Incidentally, although a pair of arm portions 36 are provided in the figure, one arm portion 36 may be provided.
本考案によればロツカアーム１０とナツト２４
との間にワツシヤとしての第１の環状部３２が位
置しているので、小さな径のナツト２４を使用し
ても座面１０１の座屈ないしは陥没は生じない。
そのためナツトの重量減を図ることができる。 According to the present invention, the lock arm 10 and the nut 24
Since the first annular portion 32 serving as a washer is located between the two, buckling or depression of the seat surface 101 will not occur even if a nut 24 with a small diameter is used.
Therefore, the weight of the nut can be reduced.
また座面保護プレート３０をその第２の環状部
３４をロツカシヤフト１２に挿入するだけで第１
の環状部３２と座面１０１との芯が自然に合つた
状態で保持される。そのためアジヤストスクリユ
２２の組付性を何ら阻害することはない。 In addition, by simply inserting the second annular portion 34 of the seat protection plate 30 into the rocker shaft 12, the first
The center of the annular portion 32 and the seat surface 101 are maintained in a naturally aligned state. Therefore, the ease of assembling the adjusting screw 22 is not hindered in any way.
さらに、座面保護プレート３０はロツカアーム
１０と相対運動がないので（即ちロツカサポート
１６及びばね１８との摺動は全て座面保護プレー
ト３０が受けもつ）、ロツカアームのボス部を小
さくすることが可能であり、より軽量化が図れ
る。 Furthermore, since the seat protection plate 30 does not move relative to the rocker arm 10 (that is, the seat protection plate 30 is responsible for all sliding movement with the rocker support 16 and spring 18), it is possible to make the boss portion of the rocker arm smaller. Therefore, it is possible to achieve further weight reduction.
第３図の実施例では、隣接するロツカアーム１
０の座面保護プレート３０間を一体のばね部３
０′で連結している。第１，２図のばね１８を省
略できる。 In the embodiment of FIG. 3, the adjacent rocker arm 1
An integrated spring portion 3 is connected between the seat protection plates 30 of 0.
They are connected at 0'. The spring 18 shown in FIGS. 1 and 2 can be omitted.
第１図は本考案の第１実施例の上面図、第２図
は第１図の−線に沿う断面図、第３図は座面
保護プレートの展開図、第４図は本考案の第２実
施例上面図。
１０……ロツカアーム、１２……ロツカシヤフ
ト、３０……座面保護プレート、３２，３４……
環状部、３６……腕部。
Fig. 1 is a top view of the first embodiment of the present invention, Fig. 2 is a sectional view taken along the - line in Fig. 1, Fig. 3 is a developed view of the seat protection plate, and Fig. 4 is a top view of the first embodiment of the present invention. FIG. 2 is a top view of the second embodiment. 10...Rotsuka arm, 12...Rotsuka shaft, 30...Seat protection plate, 32, 34...
Annular part, 36...arm part.
Claims (1)
クリユナツト座面保護プレートであつて、薄い鋼
板から形成され、アジヤストスクリユナツトの座
となる第１の環状部分と、ロツカシヤフトに挿通
される第２の環状部分と、これらの第１及び第２
の環状部分を一体に連結する腕部と成るロツカア
ーム用座面保護プレート。 An adjuster screw nut seat protection plate for an aluminum rocker arm, which is formed from a thin steel plate and includes a first annular portion that serves as a seat for the adjuster screw nut, and a second annular portion that is inserted into the rocker shaft. and these first and second
A seat protection plate for the Rotsuka arm, which is the arm that connects the annular part of the
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14962480U JPS6113681Y2 (en) | 1980-10-22 | 1980-10-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14962480U JPS6113681Y2 (en) | 1980-10-22 | 1980-10-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5773310U JPS5773310U (en) | 1982-05-06 |
| JPS6113681Y2 true JPS6113681Y2 (en) | 1986-04-28 |
Family
ID=29509001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14962480U Expired JPS6113681Y2 (en) | 1980-10-22 | 1980-10-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6113681Y2 (en) |
-
1980
- 1980-10-22 JP JP14962480U patent/JPS6113681Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5773310U (en) | 1982-05-06 |
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