JPH0310416Y2 - - Google Patents
Info
- Publication number
- JPH0310416Y2 JPH0310416Y2 JP1985137319U JP13731985U JPH0310416Y2 JP H0310416 Y2 JPH0310416 Y2 JP H0310416Y2 JP 1985137319 U JP1985137319 U JP 1985137319U JP 13731985 U JP13731985 U JP 13731985U JP H0310416 Y2 JPH0310416 Y2 JP H0310416Y2
- Authority
- JP
- Japan
- Prior art keywords
- connecting rod
- cage
- bearing
- outer diameter
- retainer
- 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
- 230000004308 accommodation Effects 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
Description
【考案の詳細な説明】
産業上の利用分野
この考案は、二輪車、雪上車等のエンジン或い
は船外機、汎用エンジン等の構成部品であるクラ
ンク軸のクランクピンと、当該クランクピンの外
周に被嵌するコネクテイングロツドの大径部との
間に挿入されるコネクテイングロツド軸受に関す
るものである。[Detailed description of the invention] Industrial application field This invention is a crank pin of a crankshaft that is a component of engines such as motorcycles and snowmobiles, outboard motors, general-purpose engines, etc. This invention relates to a connecting rod bearing that is inserted between the connecting rod and the large diameter portion of the connecting rod.
従来の技術
一般に、第３図に示す組立型クランク軸１は、
クランク軸１を第４図に示すように分解した状態
でクランクピン２にコネクテイングロツド軸受６
を嵌挿してその外周にコネクテイングロツド４の
大径部５を被嵌したのち、クランクピン２の両端
をクランクアーム３，３の支持孔に嵌合してクラ
ンク軸１を組立てている。Prior Art Generally, the assembled crankshaft 1 shown in FIG.
With the crankshaft 1 disassembled as shown in Fig. 4, connect the connecting rod bearing 6 to the crank pin 2.
After the large diameter portion 5 of the connecting rod 4 is fitted onto the outer periphery of the large diameter portion 5 of the connecting rod 4, both ends of the crank pin 2 are fitted into the support holes of the crank arms 3 to assemble the crankshaft 1.
ところで、クランク軸１のクランクピン２とコ
ネクテイングロツド４の大径部５との間に挿入さ
れるコネクテイングロツド軸受６は、円周等配置
に多数の収容孔８を有し、外径面７ａが軸受外輪
転走面に相当するコネクテイングロツド４の大径
部５の軸受孔面５ａでもつて案内される一体型の
保持器７と、保持器７の収容孔８内に収容され、
軸受内輪転走面に相当するクランクピン２の外径
面２ａとコネクテイングロツド４の大径部５の軸
受孔面５ａとに接して転動可能となつている多数
の針状ころ９とで構成されており、上記多数の針
状ころ９によりクランク軸１のクランクピン２と
コネクテイングロツド４の大径部５との間に生じ
る摩擦及び摩耗をできるだけ少なくするようにし
ている。 By the way, the connecting rod bearing 6 inserted between the crank pin 2 of the crankshaft 1 and the large diameter portion 5 of the connecting rod 4 has a large number of accommodation holes 8 arranged at the same circumference, An integrated cage 7 is guided by the bearing hole surface 5a of the large diameter portion 5 of the connecting rod 4 whose diameter surface 7a corresponds to the bearing outer ring raceway surface, and the cage is accommodated in the housing hole 8 of the cage 7. is,
A large number of needle rollers 9 are able to roll in contact with the outer diameter surface 2a of the crank pin 2, which corresponds to the bearing inner raceway surface, and the bearing hole surface 5a of the large diameter portion 5 of the connecting rod 4. The friction and wear generated between the crank pin 2 of the crankshaft 1 and the large diameter portion 5 of the connecting rod 4 are minimized by the large number of needle rollers 9.
考案が解決しようとする問題点
ところで、コネクテイングロツド軸受６はクラ
ンク軸１のクランク動作に伴つて高速度で自転及
び公転する為、その保持器７には大きな遠心力が
負荷され、保持器７の外径面７ａの両端部７a′に
偏摩耗、焼付きが生じると云う問題があつた。Problems to be solved by the invention By the way, since the connecting rod bearing 6 rotates and revolves at high speed with the crank motion of the crankshaft 1, a large centrifugal force is applied to the retainer 7, and the retainer There was a problem in that uneven wear and seizure occurred at both ends 7a' of the outer diameter surface 7a of No.7.
ところで、保持器７の外径面７ａの両端部７
a′に偏摩耗、焼付きが生じるのは、保持器７の外
径面７ａと軸受外輪転走面に相当するコネクテイ
ングロツド４の大径部５の軸受孔面５ａとの間に
存在する若干の案内スキマＨにより第５図に示す
ように保持器７が傾いたり、また、スキユーによ
り針状ころ９の端面が保持器７に強く押し付けら
れて第６図に示すように保持器７が中凹状に変形
したりする為、保持器７に大きな遠心力が負荷さ
れると、外径面７ａの両端部７a′がコネクテイン
グロツド４の大径部５の軸受孔面５ａに押し付け
られて非常に大きなエツヂロードが生じるからと
思われる。 By the way, both ends 7 of the outer diameter surface 7a of the cage 7
Uneven wear and seizure occur at a' between the outer diameter surface 7a of the cage 7 and the bearing hole surface 5a of the large diameter portion 5 of the connecting rod 4, which corresponds to the bearing outer ring raceway surface. Due to the slight guide gap H caused by this, the cage 7 may be tilted as shown in FIG. When a large centrifugal force is applied to the retainer 7, both ends 7a' of the outer diameter surface 7a are pressed against the bearing hole surface 5a of the large diameter section 5 of the connecting rod 4. This seems to be because a very large edge load is generated.
問題点を解決するための手段
この考案は上記の如き事情に鑑みてなされたも
ので、前記問題点を解決する為の技術的手段は、
円周等配置に多数の収容孔を有する一体型の保持
器と、該保持器の収容孔内に収容される多数の針
状ころとからなり、上記保持器の外径面を軸受外
輪転走面に相当するコネクテイングロツド大径部
の軸受孔面でもつて案内されるコネクテイングロ
ツド軸受に於いて、上記保持器の外径面を中凸状
の円弧面に形成したものである。Means to solve the problem This invention was made in view of the above circumstances, and the technical means to solve the problem are as follows:
It consists of an integrated cage having a large number of housing holes equally spaced around the circumference, and a large number of needle rollers that are housed in the housing holes of the cage. In a connecting rod bearing that is guided by a bearing hole surface of a large diameter portion of the connecting rod corresponding to a surface, the outer diameter surface of the retainer is formed into a medium convex arcuate surface.
作 用
保持器が案内スキマにより傾いたり、またスキ
ユーにより中凹状に変形した場合、保持器の外径
面に形成した中凸状の円弧面がコネクテイングロ
ツド大径部の軸受孔面に軸方向所定長さに亘つて
摺接して、摺接面のPV値低減を図り、偏摩耗、
焼付きの発生を防止する。Action If the cage is tilted due to the guide gap or deformed into a concave shape due to skew, the convex arc surface formed on the outer diameter surface of the cage will align the shaft with the bearing hole surface of the large diameter part of the connecting rod. By making sliding contact over a predetermined length in the direction, the PV value of the sliding contact surface is reduced, and uneven wear and
Prevents burn-in.
実施例
第１図はこの考案のコネクテイングロツド軸受
の一実施例を示す要部縦断面図である。このコネ
クテイングロツド軸受１０は、円周等配置に多数
の収容孔１２を有し、外径面１３の両端部１３
ａ，１３ａをクラウニング加工で円弧面に形成し
た一体型保持器１１と、保持器１１の収容孔１２
内に収容される多数の針状ころ１４とからなり、
これらをクランクピン１５とコネクテイングロツ
ド大径部１６との間に挿入して保持器１１の外径
面１３を軸受外輪転走面に相当するコネクテイン
グロツド大径部１６の軸受孔面１６ａでもつて案
内させ、かつ、多数の針状ころ１４を軸受内輪転
走面に相当するクランクピン１５の外径面１５ａ
とコネクテイングロツド大径部１６の軸受孔面１
６ａとに接して転動可能になつている。尚、保持
器１１の外径面１３の両端部１３ａ，１３ａに形
成された円弧面は、保持器１１が案内スキマによ
り傾いたり、また、スキユーにより中凹状に変形
した状態でも、コネクテイングロツド大径部１６
の軸受孔面１６ａと所定のPV値以下で摺接する
様に（所定の軸方向長さに亘つて摺接する様に）
設定されている。例えば、幅Ｂが10〜30mmの場
合、曲率半径Ｒを50〜3000mm程度であり、このと
きの厚みＴは0.05〜0.2mm程度である。Embodiment FIG. 1 is a longitudinal sectional view of a main part showing an embodiment of the connecting rod bearing of this invention. This connecting rod bearing 10 has a large number of accommodation holes 12 arranged equidistantly around the circumference, and has both ends 13 of an outer diameter surface 13.
An integrated cage 11 in which a and 13a are formed into an arcuate surface by crowning, and a housing hole 12 of the cage 11.
It consists of a large number of needle rollers 14 housed inside,
These are inserted between the crank pin 15 and the connecting rod large diameter section 16, and the outer diameter surface 13 of the cage 11 is connected to the bearing hole surface of the connecting rod large diameter section 16, which corresponds to the bearing outer ring raceway surface. 16a, and a large number of needle rollers 14 are guided by the outer diameter surface 15a of the crank pin 15, which corresponds to the bearing inner raceway surface.
and the bearing hole surface 1 of the connecting rod large diameter section 16.
6a so that it can roll. Incidentally, the arcuate surfaces formed on both ends 13a, 13a of the outer diameter surface 13 of the retainer 11 allow the connecting rod to remain intact even when the retainer 11 is tilted due to the guide gap or deformed into a concave shape due to skew. Large diameter part 16
so as to make sliding contact with the bearing hole surface 16a at a predetermined PV value or less (so that it makes sliding contact over a predetermined axial length)
It is set. For example, when the width B is 10 to 30 mm, the radius of curvature R is about 50 to 3000 mm, and the thickness T is about 0.05 to 0.2 mm.
従つて、コネクテイングロツド軸受１０によれ
ば、保持器１１の外径面１３の両端部１３ａ，１
３ａをコネクテイングロツド大径部１６の軸受孔
面１６ａと所定の軸方向長さに亘つて摺接する円
弧面に形成しているから、クランクピン１５とコ
ネクテイングロツド大径部１６との間に挿入して
大きな遠心力が保持器１１に負荷され、かつ、保
持器１１が案内スキマにより傾いたり、また、ス
キユーにより中凹状に変形した状態でも、保持器
１１の外径面１３の両端部１３ａ，１３ａによる
エツジロツドの軽減を計ることができ、当該部分
の偏摩耗、焼付き等を防止して良好な作動状態が
保持される。 Therefore, according to the connecting rod bearing 10, both ends 13a, 1 of the outer diameter surface 13 of the retainer 11
3a is formed into an arcuate surface that makes sliding contact with the bearing hole surface 16a of the connecting rod large diameter portion 16 over a predetermined axial length, so that the contact between the crank pin 15 and the connecting rod large diameter portion 16 is Even if a large centrifugal force is applied to the cage 11 by inserting it between the cages, and the cage 11 is tilted due to the guide gap or deformed into a concave shape due to the skew, both ends of the outer diameter surface 13 of the cage 11 Edge rods caused by the portions 13a, 13a can be reduced, and uneven wear, seizure, etc. of the portions can be prevented and a good operating condition can be maintained.
第２図は上記実施例の変形例を示す説明図であ
り、保持器１１の外径面１３を全面に亘つてクラ
ウニング加工により中凸状の円弧面に形成したも
のである。尚、第１及び第２図はこの考案の特徴
をより明確にあらわす為に、実際の軸受のプロポ
ーシヨンより軸方向寸法を短くして描かれてい
る。 FIG. 2 is an explanatory view showing a modification of the above embodiment, in which the outer diameter surface 13 of the retainer 11 is formed into a medium convex circular arc surface by crowning over the entire surface. Incidentally, in order to more clearly express the features of this invention, FIGS. 1 and 2 are drawn with the axial dimension shorter than the proportions of the actual bearing.
考案の効果
以上説明したようにこの考案は、保持器の外径
面をコネクテイングロツド大径部の軸受孔面と全
面当りするように中凸状の円弧面に形成したか
ら、大きな遠心力が負荷される状態に於いても保
持器の外径面両端部によるエツジロードの軽減を
計ることができ、当該部分の偏摩耗、焼付き等を
防止し得るコネクテイングロツド軸受を提供する
ことができる。Effects of the device As explained above, this device has a medium convex arcuate surface so that the outer diameter surface of the cage is in full contact with the bearing hole surface of the large diameter portion of the connecting rod, which creates a large centrifugal force. To provide a connecting rod bearing that can reduce the edge load at both ends of the outer diameter surface of a cage even when the cage is loaded, and can prevent uneven wear, seizure, etc. of the said parts. can.
第１図はこの考案のコネクテイングロツド軸受
の一実施例を示す要部縦断面図、第２図はこの考
案の変形例を示す要部縦断面図、第３図は組立型
クランク軸へのコネクテイングロツド軸受の組付
け状態を示す分解斜視図、第４図はその要部縦断
面図、第５図及び第６図は保持器の外径面両端部
への応力集中を誇張して説明する図面である。
１０……コネクテイングロツド軸受、１１……
保持器、１２……収容孔、１３……外径面、１３
ａ，１３ａ……外径面両端部、１４……針状こ
ろ、１５……クランクピン、１６……コネクテイ
ングロツド大径部。
Fig. 1 is a vertical cross-sectional view of the main part showing an embodiment of the connecting rod bearing of this invention, Fig. 2 is a longitudinal cross-sectional view of the main part showing a modification of this invention, and Fig. 3 is a cross-sectional view of the main part showing an embodiment of the connecting rod bearing of this invention. Fig. 4 is a longitudinal cross-sectional view of the main parts, and Figs. 5 and 6 exaggerate stress concentration at both ends of the outer diameter surface of the cage. FIG. 10... Connecting rod bearing, 11...
Cage, 12... Accommodation hole, 13... Outer diameter surface, 13
a, 13a... Both ends of the outer diameter surface, 14... Needle roller, 15... Crank pin, 16... Large diameter portion of the connecting rod.
Claims (1)
持器と、該保持器の収容孔内に収容される多数の
針状ころとからなり、これらをクランクピンとコ
ネクテイングロツドとの間に挿入して上記保持器
の外径面をコネクテイングロツド大径部の軸受孔
面でもつて案内させるコネクテイングロツド軸受
に於いて、上記保持器の外径面を中凸状の円弧面
に形成したことを特徴とするコネクテイングロツ
ド軸受。 It consists of an integrated cage with a large number of housing holes equally spaced around the circumference, and a large number of needle rollers that are housed in the housing holes of the cage, and these are placed between the crank pin and the connecting rod. In a connecting rod bearing in which the outer diameter surface of the retainer is inserted and guided by the bearing hole surface of the large diameter portion of the connecting rod, the outer diameter surface of the retainer is formed into a medium convex arc surface. A connecting rod bearing characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985137319U JPH0310416Y2 (en) | 1985-09-06 | 1985-09-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985137319U JPH0310416Y2 (en) | 1985-09-06 | 1985-09-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6245420U JPS6245420U (en) | 1987-03-19 |
| JPH0310416Y2 true JPH0310416Y2 (en) | 1991-03-14 |
Family
ID=31398634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985137319U Expired JPH0310416Y2 (en) | 1985-09-06 | 1985-09-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0310416Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013002567A (en) * | 2011-06-17 | 2013-01-07 | Ntn Corp | Cylindrical roller bearing |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1256601A (en) * | 1960-02-09 | 1961-03-24 | Roulements A Aiguilles Sa | Needle bearing cage and its manufacturing process |
| DE1525132A1 (en) * | 1965-08-20 | 1969-09-04 | Schaeffler Ohg Industriewerk | Cage for cylindrical rolling elements |
| DE2047419A1 (en) * | 1970-09-26 | 1972-03-30 | Schaeffler Ohg Industriewerk | Rolling bearings with cage segments made from thin-walled sheet metal |
| JPS5110283U (en) * | 1974-07-09 | 1976-01-26 | ||
| JPS5321061A (en) * | 1976-08-10 | 1978-02-27 | Tanaka Seisakusho Kk | Gas pressure welding for large steel rounds |
| JPS56153111A (en) * | 1980-04-30 | 1981-11-27 | Honda Motor Co Ltd | Bearing device |
-
1985
- 1985-09-06 JP JP1985137319U patent/JPH0310416Y2/ja not_active Expired
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1256601A (en) * | 1960-02-09 | 1961-03-24 | Roulements A Aiguilles Sa | Needle bearing cage and its manufacturing process |
| DE1525132A1 (en) * | 1965-08-20 | 1969-09-04 | Schaeffler Ohg Industriewerk | Cage for cylindrical rolling elements |
| DE2047419A1 (en) * | 1970-09-26 | 1972-03-30 | Schaeffler Ohg Industriewerk | Rolling bearings with cage segments made from thin-walled sheet metal |
| JPS5110283U (en) * | 1974-07-09 | 1976-01-26 | ||
| JPS5321061A (en) * | 1976-08-10 | 1978-02-27 | Tanaka Seisakusho Kk | Gas pressure welding for large steel rounds |
| JPS56153111A (en) * | 1980-04-30 | 1981-11-27 | Honda Motor Co Ltd | Bearing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6245420U (en) | 1987-03-19 |
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