JP3328896B2 - Caulking structure of actuator case for pulley for continuously variable transmission - Google Patents
Caulking structure of actuator case for pulley for continuously variable transmissionInfo
- Publication number
- JP3328896B2 JP3328896B2 JP01518295A JP1518295A JP3328896B2 JP 3328896 B2 JP3328896 B2 JP 3328896B2 JP 01518295 A JP01518295 A JP 01518295A JP 1518295 A JP1518295 A JP 1518295A JP 3328896 B2 JP3328896 B2 JP 3328896B2
- Authority
- JP
- Japan
- Prior art keywords
- case
- movable sheave
- pulley
- caulking
- continuously variable
- 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 - Fee Related
Links
Landscapes
- Pulleys (AREA)
- Transmissions By Endless Flexible Members (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、無段変速機用のプーリ
におけるアクチュエータケースのかしめ構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a caulking structure of an actuator case in a pulley for a continuously variable transmission.
【０００２】[0002]
【従来の技術】無段変速機用プーリは、固定シーブと、
固定シーブに対し軸方向に移動自在な可動シーブと、可
動シーブを固定シーブ側に押圧すべく可動シーブの軸方
向外方に設ける油圧アクチュエータとで構成されてお
り、油圧アクチュエータのケースを可動シーブの外周に
形成した環状溝にかしめ結合するようにしている。かか
るケースのかしめ構造として、従来、実開平３−１１４
６５７号公報により、可動シーブの環状溝の軸方向内側
の溝壁に微小なテーパ角を付け、ケースのかしめ部に大
きな圧縮応力を作用させて、耐圧力を高めるようにした
ものが知られている。2. Description of the Related Art A pulley for a continuously variable transmission includes a fixed sheave,
The movable sheave is composed of a movable sheave movable axially with respect to the fixed sheave, and a hydraulic actuator provided outside the movable sheave in the axial direction of the movable sheave so as to press the movable sheave toward the fixed sheave. It is caulked and connected to an annular groove formed on the outer periphery. Conventionally, as a caulking structure for such a case, Japanese Unexamined Utility Model Publication No.
No. 657 discloses a structure in which a small taper angle is applied to an axially inner groove wall of an annular groove of a movable sheave to apply a large compressive stress to a caulking portion of a case to increase a pressure resistance. I have.
【０００３】[0003]
【発明が解決しようとする課題】ところで、最近は排気
量の大きなエンジンを搭載する自動車への無段変速機の
適用が望まれており、この場合油圧アクチュエータの内
圧を高めることが必要になるが、これによればケースの
かしめ部に大きな曲げ応力が作用する。上記従来例のか
しめ構造は、径方向の耐圧力は高められるものの曲げ応
力に対しては考慮されておらず、繰返しの曲げによって
ケースのかしめ部の基端に亀裂が入り、充分な耐久性を
得られない。本発明は、以上の点に鑑み、油圧アクチュ
エータの内圧を高めても充分な耐久性を得られるように
したアクチュエータケースのかしめ構造を提供すること
をその目的としている。Recently, it has been desired to apply a continuously variable transmission to an automobile equipped with a large displacement engine. In this case, it is necessary to increase the internal pressure of a hydraulic actuator. According to this, a large bending stress acts on the caulked portion of the case. The caulking structure of the above-mentioned conventional example can increase the withstand pressure in the radial direction but does not consider bending stress, and cracks occur at the base end of the caulking portion of the case due to repeated bending, and sufficient durability is obtained. I can't get it. In view of the above, an object of the present invention is to provide a caulking structure of an actuator case that can obtain sufficient durability even when the internal pressure of a hydraulic actuator is increased.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成すべく、
本発明は、無段変速機用プーリの可動シーブを押圧すべ
く該可動シーブの軸方向外方に設ける油圧アクチュエー
タのケースの端部を可動シーブの外周に形成した環状溝
にかしめ込んで、該ケースを該可動シーブにかしめ結合
するものにおいて、該環状溝の軸方向外側の溝壁の径方
向外端のコーナ部を、面取り量Ｌｍが０．１ｍｍ≦Ｌｍ
≦０．５ｍｍの範囲にある面取り形状に形成し、前記ケ
ースの端部を、前記面取り量Ｌｍに応じた２．０ｍｍを
越えない範囲のかしめ量Ｌｋでかしめることを特徴とす
る。In order to achieve the above object,
According to the present invention, an end of a case of a hydraulic actuator provided axially outside the movable sheave to press the movable sheave of the continuously variable transmission pulley is swaged into an annular groove formed on the outer periphery of the movable sheave. In a case in which a case is swaged to the movable sheave, a corner portion at a radially outer end of an axially outer groove wall of the annular groove has a chamfer amount Lm of 0.1 mm ≦ Lm.
Forming a chamfered shape in the range of ≦ 0.5 mm, said Ke
2.0 mm according to the chamfer amount Lm.
It is characterized by caulking with a caulking amount Lk within a range not exceeding .
【０００５】[0005]
【作用】環状溝にかしめ込まれるケースのかしめ部の基
端が溝壁コーナ部の面取り形状に対応する面取り形状に
なり、かしめ部の基端の応力集中率が減少し、油圧アク
チュエータの内圧増加による曲げに対しての耐久性が向
上する。[Action] The base end of the swaged portion of the case to be swaged into the annular groove has a chamfered shape corresponding to the chamfered shape of the groove wall corner portion, the stress concentration rate at the base end of the swaged portion decreases, and the internal pressure of the hydraulic actuator increases. The durability against bending due to this is improved.
【０００６】[0006]
【実施例】無段変速機用のプーリは、図１に示す如く、
固定シーブ１と、固定シーブ１の軸部にボールスプライ
ン２ａを介して外挿した、軸方向に移動自在な可動シー
ブ２と、可動シーブ２の軸方向外方に設けた油圧アクチ
ュエータ３とを備え、該アクチュエータ３により可動シ
ーブ２を固定シーブ１側に押圧し、固定シーブ１と可動
シーブ２との間に挟むベルト４の巻掛け径を油圧アクチ
ュエータ３の内圧に応じて図１の上半部や下半部に示す
如く変化させるように構成されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG.
A fixed sheave 1, a movable sheave 2 which is extrapolated to a shaft portion of the fixed sheave 1 via a ball spline 2 a and is movable in the axial direction, and a hydraulic actuator 3 provided outside the movable sheave 2 in the axial direction. The movable sheave 2 is pressed toward the fixed sheave 1 by the actuator 3, and the winding diameter of the belt 4 sandwiched between the fixed sheave 1 and the movable sheave 2 is changed according to the internal pressure of the hydraulic actuator 3 in the upper half of FIG. It is configured to change as shown in FIG.
【０００７】油圧アクチュエータ３は、固定シーブ１の
軸部に固定した固定ピストン３０と、該ピストン３０と
可動シーブ２との間に油室３１を画成するシリンダ状の
ケース３２とを備えており、該ケース３２は可動シーブ
２にかしめ結合される。The hydraulic actuator 3 has a fixed piston 30 fixed to the shaft of the fixed sheave 1 and a cylindrical case 32 defining an oil chamber 31 between the piston 30 and the movable sheave 2. The case 32 is caulked to the movable sheave 2.
【０００８】可動シーブ２の外周面は軸方向外側部を小
径にした段付形状に形成されており、この小径部に図２
に明示する如く環状溝２０を形成し、この環状溝２０に
ケース３２の端部をかしめ込んでケース３２を可動シー
ブ２にかしめ結合するようにした。[0008] The outer peripheral surface of the movable sheave 2 is formed in a stepped shape having a small diameter at the outer portion in the axial direction.
The case 32 is formed by caulking the end of the case 32 to the movable sheave 2 by caulking the end of the case 32 into the annular groove 20 as shown in FIG.
【０００９】環状溝２０の軸方向外側の溝壁２１の径方
向外端のコーナ部２２は面取り形状に形成されており、
そのためケース３２のかしめ部３２ａの基端はコーナ部
２２に合致する面取り形状になる。A corner portion 22 at a radially outer end of a groove wall 21 axially outside the annular groove 20 is formed in a chamfered shape.
Therefore, the base end of the caulked portion 32 a of the case 32 has a chamfered shape that matches the corner portion 22.
【００１０】コーナ部２２の面取り量Ｌｍを０．２mmに
したものと、０．４mmにしたものと、コーナ部を面取り
しないものとを用意し、ケース３２のかしめ量Ｌｋを変
えて種々のプーリを製作し、夫々のプーリの耐久試験を
行ったところ下記表１に示す結果を得た。尚、ケース３
２の材質はＳＰＣＣとし、板厚は３．２mmとした。耐久
試験は、油圧アクチュエータ３の内圧を４０kg／cm2と
し、プーリの１回転を１回として、かしめ部３２ａから
の油のリークやかしめ部３２ａの亀裂が発生するまでの
回数を測定することにより行った。尚、油圧アクチュエ
ータ３の内圧は実用時には最高でも２０kg／cm2である
が、試験時間の短縮のために内圧を４０kg／cm2という
非常に高い値にした。A variety of pulleys are prepared by changing the amount of chamfering Lm of the corner portion 22 to 0.2 mm, 0.4 mm, and not chamfering the corner portion. Was manufactured and the durability test of each pulley was performed. The results shown in Table 1 below were obtained. Case 3
The material of No. 2 was SPCC, and the plate thickness was 3.2 mm. In the durability test, the internal pressure of the hydraulic actuator 3 was set to 40 kg / cm 2, and one rotation of the pulley was set to one time, and the number of times until oil leakage from the caulked portion 32a or cracks of the caulked portion 32a occurred was measured. went. The internal pressure of the hydraulic actuator 3 is 20 kg / cm 2 at the maximum in practical use, but the internal pressure is set to a very high value of 40 kg / cm 2 in order to shorten the test time.
【００１１】 従来は、リーク防止のためにコーナ部２２は面取りして
いないが、コーナ部２２を面取りしてもかしめ量Ｌｋを
大きくすることでリークを防止でき、且つ、コーナ部２
２を面取りすることで耐久性を著しく向上できることが
判明した。[0011] Conventionally, the corner portion 22 is not chamfered to prevent leakage. However, even if the corner portion 22 is chamfered, leakage can be prevented by increasing the caulking amount Lk, and the corner portion 2 can be prevented.
It has been found that durability can be significantly improved by chamfering No. 2.
【００１２】尚、面取り量Ｌｍが０．１mm以下では耐久
性は左程向上せず、また、面取り量Ｌｍを０．５mm以上
にすると、リーク防止のためにかしめ量Ｌｋを２mm以上
にする必要があり、かしめ量が大きくなり過ぎて強度が
低下する。従って、面取り量Ｌｍは０．１〜０．５mm、
好ましくは０．２〜０．４mmにすることが望ましい。When the chamfer amount Lm is 0.1 mm or less, the durability does not improve as much as the left. When the chamfer amount Lm is 0.5 mm or more, the caulking amount Lk needs to be 2 mm or more to prevent leakage. However, the swage amount becomes too large and the strength is reduced. Therefore, the chamfer amount Lm is 0.1 to 0.5 mm,
Preferably, the thickness is set to 0.2 to 0.4 mm.
【００１３】また、上記実施例ではコーナ部２２を斜状
に面取りしたが、図３に示す実施例のようにコーナ部２
２をアール形状に面取りしても良い。In the above embodiment, the corner portion 22 is chamfered obliquely. However, as in the embodiment shown in FIG.
2 may be chamfered into a round shape.
【００１４】[0014]
【発明の効果】以上の説明から明らかなように、本発明
によれば、ケースのかしめ部の基端の応力集中率が減少
し、油圧アクチュエータの内圧増加による曲げに対して
の耐久性が向上する。As is apparent from the above description, according to the present invention, the stress concentration rate at the base end of the caulked portion of the case is reduced, and the durability against bending due to an increase in the internal pressure of the hydraulic actuator is improved. I do.
【図１】 無段変速機用プーリの断面図FIG. 1 is a sectional view of a pulley for a continuously variable transmission.
【図２】 本発明実施の一例を示すケースのかしめ部分
の拡大断面図FIG. 2 is an enlarged sectional view of a caulked portion of a case showing an embodiment of the present invention.
【図３】 他の実施例を示す拡大断面図FIG. 3 is an enlarged sectional view showing another embodiment.
１ 固定シーブ、 ２ 可動シーブ ２０ 環状溝、 ２１ 溝壁 ２２ コーナ部、 ３ 油圧アクチュエー
タ ３２ ケース、 ３２ａ かしめ部Reference Signs List 1 fixed sheave, 2 movable sheave 20 annular groove, 21 groove wall 22 corner portion, 3 hydraulic actuator 32 case, 32a caulking portion
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭62−162304（ＪＰ，Ａ) 特開 平５−299038（ＪＰ，Ａ) 実開 平３−114657（ＪＰ，Ｕ) 実開 平７−44233（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) F16H 9/00 - 9/26 F16H 55/32 - 55/56 F16B 3/00 - 7/00 F16D 1/00 - 9/00 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-62-162304 (JP, A) JP-A-5-299038 (JP, A) JP-A-3-114657 (JP, U) JP-A-7-162 44233 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) F16H 9/00-9/26 F16H 55/32-55/56 F16B 3/00-7/00 F16D 1/00 -9/00
Claims (1)
すべく該可動シーブの軸方向外方に設ける油圧アクチュ
エータのケースの端部を可動シーブの外周に形成した環
状溝にかしめ込んで、該ケースを該可動シーブにかしめ
結合するものにおいて、該環状溝の軸方向外側の溝壁の
径方向外端のコーナ部を、面取り量Ｌｍが０．１ｍｍ≦
Ｌｍ≦０．５ｍｍの範囲にある面取り形状に形成し、前
記ケースの端部を、前記面取り量Ｌｍに応じた２．０ｍ
ｍを越えない範囲のかしめ量Ｌｋでかしめることを特徴
とする無段変速機用プーリにおけるアクチュエータケー
スのかしめ構造。 An end of a case of a hydraulic actuator provided axially outward of a movable sheave for pressing a movable sheave of a pulley for a continuously variable transmission is caulked into an annular groove formed on an outer periphery of the movable sheave . In the case where the case is crimped to the movable sheave, a corner portion at a radially outer end of an axially outer groove wall of the annular groove has a chamfer amount Lm of 0.1 mm ≦.
Forming a chamfered shape in the range of Lm ≦ 0.5 mm, prior to
The end of the case is set at 2.0 m according to the chamfer amount Lm.
A caulking structure of an actuator case in a pulley for a continuously variable transmission , wherein the caulking is performed with a caulking amount Lk not exceeding m .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01518295A JP3328896B2 (en) | 1995-02-01 | 1995-02-01 | Caulking structure of actuator case for pulley for continuously variable transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01518295A JP3328896B2 (en) | 1995-02-01 | 1995-02-01 | Caulking structure of actuator case for pulley for continuously variable transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08210454A JPH08210454A (en) | 1996-08-20 |
| JP3328896B2 true JP3328896B2 (en) | 2002-09-30 |
Family
ID=11881690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP01518295A Expired - Fee Related JP3328896B2 (en) | 1995-02-01 | 1995-02-01 | Caulking structure of actuator case for pulley for continuously variable transmission |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3328896B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6218470B2 (en) * | 2013-07-18 | 2017-10-25 | 株式会社フジキン | Diaphragm valve |
| JP2018162861A (en) * | 2017-03-27 | 2018-10-18 | 株式会社鷺宮製作所 | Throttle device and freezing cycle system having the same |
| CN112186947B (en) * | 2020-09-26 | 2022-02-22 | 日本电产（东莞）有限公司 | Motor and electronic equipment with same |
-
1995
- 1995-02-01 JP JP01518295A patent/JP3328896B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08210454A (en) | 1996-08-20 |
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