JP2548917Y2 - Universal joint boots - Google Patents
Universal joint bootsInfo
- Publication number
- JP2548917Y2 JP2548917Y2 JP1991033899U JP3389991U JP2548917Y2 JP 2548917 Y2 JP2548917 Y2 JP 2548917Y2 JP 1991033899 U JP1991033899 U JP 1991033899U JP 3389991 U JP3389991 U JP 3389991U JP 2548917 Y2 JP2548917 Y2 JP 2548917Y2
- Authority
- JP
- Japan
- Prior art keywords
- universal joint
- opening edge
- boot
- valley
- joint boot
- 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 - Lifetime
Links
Landscapes
- Sealing Devices (AREA)
- Diaphragms And Bellows (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この考案は自在継手用ブーツに関
し、特に、耐久性を向上させることのできる自在継手用
ブーツに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a universal joint boot, and more particularly to a universal joint boot capable of improving durability.
【０００２】[0002]
【従来技術および解決しようとする課題】従来の自在継
手に取付けられる自在継手用ブーツとして、図５〜図７
に示すものが存在する。すなわち、図５〜図７には自在
継手２７に自在継手用ブーツ２１を取付けた状態の断面
が示されており、図５に示す自在継手２７は駆動側シャ
フト２８と、駆動側シャフト２８と自在継手に連設され
た従動側シャフト２９とで構成され、この従動側シャフ
ト２９に有する外輪３０と駆動側シャフト２８とに自在
継手用ブーツ２１の両開口縁部２２、２３が取付けられ
ている。そして、駆動側シャフト２８の回転力を自在継
手２７を介して従動側シャフト２９に伝達されるように
なっている。又、駆動側シャフト２８は自在継手２７に
おいて継手角度を０度から最大角度まで自在に変化する
ようになっている。2. Description of the Prior Art FIGS. 5 to 7 show a conventional universal joint boot which can be mounted on a universal joint.
There are the following. That is, FIGS. 5 to 7 show cross sections in a state in which the universal joint boot 21 is attached to the universal joint 27. The universal joint 27 shown in FIG. The driven-side shaft 29 is connected to the joint, and the open edges 22 and 23 of the universal joint boot 21 are attached to the outer ring 30 and the drive-side shaft 28 of the driven-side shaft 29. Then, the rotational force of the drive shaft 28 is transmitted to the driven shaft 29 via the universal joint 27. Further, the drive-side shaft 28 is adapted to freely change the joint angle of the universal joint 27 from 0 degree to the maximum angle.
【０００３】そして、自在継手２７に取付けられる自在
継手用ブーツ２１は、筒状をなすとと共に、一端が拡大
開口縁部２２となっており、又、他端が開口縁部２３と
なっていて、拡大開口縁部２２と開口縁部２３との間に
蛇腹部２４が形成され、この蛇腹部２４は、立上り部２
６と、立下り部２５とが交互に連続することで形成さ
れ、さらに、拡大開口縁部２２は外輪３０に、また、開
口縁部２３は駆動側シャフト２８にそれぞれ固定部材３
１、３２によって締付け固定されている。The universal joint boot 21 attached to the universal joint 27 has a tubular shape, one end of which is an enlarged opening edge 22, and the other end of which is an opening edge 23. A bellows portion 24 is formed between the enlarged opening edge portion 22 and the opening edge portion 23, and the bellows portion 24
6 and the falling portion 25 are alternately and continuously formed. Further, the enlarged opening edge 22 is fixed to the outer ring 30, and the opening edge 23 is fixed to the driving shaft 28.
It is fastened and fixed by 1, 32.
【０００４】上記の構成で、自在継手用ブーツ２１は自
在継手２７の動きに合わせて回転と揺動とをする。しか
しながら、図６、図７に示すように、駆動側シャフト２
８の中心軸が自在継手２７に対し継手角度を大きくする
と、拡大開口縁部２２から最初の立上り部２６が自在継
手２７の外輪３０と駆動側シャフト２８との間に挟まれ
て折り曲げられ、かつ、駆動側シャフト２８の中心軸と
の自在継手２７における継手角度が大きな状態を維持し
たまま回転が続くと、拡大開口縁部２２から最初の立上
り部２６に自在継手２７の回転とともに圧縮および引張
り応力が繰り返し加わるため、拡大開口縁部２２から最
初の立上り部２６にしわおよび亀裂が生じ、早期に自在
継手用ブーツ２１が破損するという問題点が存するもの
である。With the above configuration, the universal joint boot 21 rotates and swings in accordance with the movement of the universal joint 27. However, as shown in FIGS.
When the central axis of the joint 8 increases the joint angle with respect to the universal joint 27, the first rising portion 26 from the enlarged opening edge portion 22 is bent between the outer ring 30 of the universal joint 27 and the drive shaft 28, and bent. When the rotation continues while the joint angle of the universal joint 27 with the center axis of the drive side shaft 28 is kept large, the compression and tensile stress is generated together with the rotation of the universal joint 27 from the enlarged opening edge 22 to the first rising portion 26. Is repeatedly applied, wrinkles and cracks are generated from the enlarged opening edge portion 22 to the first rising portion 26, and the universal joint boot 21 is damaged at an early stage.
【０００５】この考案は前記のような従来のもののもつ
問題点を解決したものであって、その目的は、駆動側シ
ャフトの中心軸との自在継手における継手角度が大きく
なっても、拡大開口縁部から最初の立上り部の屈曲を抑
えることができ、しわおよび亀裂による破損が生じにく
くして耐久性を向上させた自在継手用ブーツを得ること
にある。This invention solves the above-mentioned problems of the prior art. The purpose of the invention is to increase the size of the enlarged opening edge even when the joint angle of the universal joint with the center axis of the driving shaft increases. An object of the present invention is to obtain a universal joint boot in which bending of a first rising portion from a portion can be suppressed, breakage due to wrinkles and cracks hardly occurs and durability is improved.
【０００６】[0006]
【課題を解決するための手段】上記の目的を達成するた
めに、この考案は、自在継手の外輪に嵌着する一端側の
第１開口縁部および第１開口縁部と反対の他端側で自在
継手の駆動側シャフトに嵌着する第２開口縁部を有して
第１開口縁部と第２開口縁部との間が蛇腹部に形成され
た自在継手用ブーツであって、蛇腹部の第１開口縁部に
連続する第１の腹部分が第１谷部に向かって縮径すると
共に第１谷部側の外周面に第１の腹部分の肉厚を薄くす
る凹部が形成されていることを特徴とするものである。In order to achieve the above object, the present invention provides a first opening edge at one end to be fitted to an outer ring of a universal joint and the other end opposite to the first opening edge. A universal joint boot having a second opening edge fitted to the drive side shaft of the universal joint and having a bellows portion formed between the first opening edge and the second opening edge. A first antinode portion contiguous to the first opening edge of the portion is reduced in diameter toward the first valley portion, and a concave portion is formed on the outer peripheral surface on the first valley portion side to reduce the thickness of the first antinode portion. It is characterized by having been done.
【０００７】[0007]
【作用】この考案は上記の手段を採用したことにより、
駆動側シャフトの中心軸との自在継手における継手角度
を大きい状態で、自在継手用ブーツが自在継手の動きに
合わせて回転、揺動する場合においても、自在継手の外
輪に取付けられる自在継手用ブーツの開口縁部から最初
の谷部に至る蛇腹部の外周面に凹部が設けられているた
め、開口縁部から最初の谷部が湾曲状になり、従来のよ
うに折り曲げられることがないため、しわおよび亀裂に
より自在継手用ブーツが破損しにくくなり、耐久性が向
上する。[Function] This invention adopts the above-mentioned means,
The universal joint boot attached to the outer ring of the universal joint even when the universal joint boot rotates and swings in accordance with the movement of the universal joint when the joint angle of the universal joint with the center axis of the drive side shaft is large. Since the concave portion is provided on the outer peripheral surface of the bellows portion from the opening edge portion to the first valley portion, the first valley portion from the opening edge portion becomes curved, and it is not bent as in the related art, The boots for the universal joint are less likely to be damaged by wrinkles and cracks, and the durability is improved.
【０００８】[0008]
【実施例】以下、この考案の一実施例について図面に基
づき説明する。図１〜図４には、この考案に係わる自在
継手用ブーツの一実施例が示されている。図１には自在
継手７に自在継手用ブーツ１を取付けた断面が示されて
いる。図１に示す自在継手７は、駆動側シャフト８と、
図示しないベアリングを介して従動側シャフト９とが連
結されている。この自在継手用ブーツは継手部材の外側
に設けられた外輪１０と駆動側シャフト８に自在継手用
ブーツ１の両開口縁部２、３が取付けられ、ベアリング
側を覆っている。そして、駆動側シャフト８の回転力が
ベアリングを介して従動側シャフト９に伝達されるよう
になっている。又、前記自在継手７における駆動側シャ
フト８の中心軸の継手角度は０度から可能な最大角度ま
で自在に変化するようになっている。An embodiment of the present invention will be described below with reference to the drawings. 1 to 4 show an embodiment of a universal joint boot according to the present invention. FIG. 1 shows a cross section in which the universal joint boot 1 is attached to the universal joint 7. The universal joint 7 shown in FIG.
The driven shaft 9 is connected via a bearing (not shown). In this universal joint boot, both open edges 2 and 3 of the universal joint boot 1 are attached to an outer ring 10 and a drive side shaft 8 provided outside the joint member, and cover the bearing side. The rotational force of the drive side shaft 8 is transmitted to the driven side shaft 9 via a bearing. The joint angle of the center axis of the drive side shaft 8 in the universal joint 7 is freely changed from 0 degree to the maximum possible angle.
【０００９】自在継手７に設けられる自在継手用ブーツ
１は、図１、図２に示すように筒状をなすとともに、一
端が拡大開口縁部（第１開口縁部）２となっており、ま
た、他端が開口縁部（第２開口縁部）３となっていて、
拡大開口縁部２と開口縁部３との間に蛇腹部４が形成さ
れ、この蛇腹部４は、拡大開口縁部２から順に第１谷部
６1 、第２谷部６2 および第３谷部６3 と、拡大開口縁
部２から順に第１山部５1 、第２山部５2 および第３山
部５3 とが各々交互に連続する形に形成されて、拡大開
口縁部２は外輪１０に、また、開口縁部３は駆動側シャ
フト８にそれぞれ固定部材１１、１２によって締付け固
定されている。The universal joint boot 1 provided in the universal joint 7 has a cylindrical shape as shown in FIGS. 1 and 2, and has one end serving as an enlarged opening edge (first opening edge) 2. The other end is an opening edge (second opening edge) 3, and
A bellows portion 4 is formed between the enlarged opening edge portion 2 and the opening edge portion 3, and the bellows portion 4 includes a first valley portion 6 1 , a second valley portion 6 2, and a third valley portion in this order from the enlarged opening edge portion 2. the troughs 6 3, is formed from expanded opening edge portion 2 first crest 5 1 sequentially, to form a second crest 5 2 and the third crest 5 3 are continuous respectively to alternately expand opening edge 2 is fixed to the outer ring 10 and the opening edge 3 is fixed to the drive-side shaft 8 by fixing members 11 and 12, respectively.
【００１０】また、図３に示すように拡大開口縁部２か
ら最初の第１谷部６1 に至る腹部分１５1 の外周面には
凹部１３が環状に設けられている。さらに、拡大開口縁
部２から最初の第１谷部６1 に至る腹部分１５1 の内周
面には突起部１４が環状に設けられている。[0010] The recess 13 on the outer peripheral surface of the abdominal portion 15 1 extending in the first valley 61 from the enlarged opening edge 2 of the first, as shown in FIG 3 is provided in an annular. Further, the inner peripheral surface of the abdominal portion 15 1 extending from the enlarged opening edge 2 to the initial first valley 6 first protrusion 14 is provided annularly.
【００１１】上記の構成で、自在継手用ブーツ１は自在
継手７の動きに合わせて回転、揺動する。また、自在継
手７における駆動側シャフト８の継手角度が大きい状態
で回転する場合、拡大開口縁部２から最初の谷部６1 に
至る腹部分１５の外周面には凹部１３が設けられている
ので、図４に示すように拡大開口縁部２から最初の第１
谷部６1 が湾曲状になるため、従来のように第１谷部６
1 が折り曲げられないので、第１谷部６1 にしわおよび
亀裂による破損が生じにくくなる。従って、自在継手用
ブーツ１の耐久性が向上することとなるものである。With the above configuration, the universal joint boot 1 rotates and swings in accordance with the movement of the universal joint 7. In the case of rotating in a state joint angle of the drive-side shaft 8 is greater in the universal joint 7, the recess 13 on the outer peripheral surface of the abdominal portion 15 extending from the enlarged opening edge 2 to the first trough portion 61 is provided Therefore, as shown in FIG.
Since the troughs 61 is curved, the first valley as in the conventional 6
Since 1 is not bent, damaged by wrinkles and cracks are less likely to occur in the first valley 61. Therefore, the durability of the universal joint boot 1 is improved.
【００１２】さらに、拡大開口縁部２から、最初の第１
谷部６1 に至る腹部分１５の内周面には突起部１４が環
状に設けられているため、自在継手７における駆動側シ
ャフト８の中心軸の継手角度が大きくなった際、また、
自在継手用ブーツ１の内部が負圧状態になった際に、自
在継手７のベアリング側へ自在継手用ブーツ１の第１谷
部６1 側が噛み込まれるのを防止することができる。ま
た、突起部１４の形状は自在継手７の外輪１０の形状に
より、種々の形状が考えられる。Further, from the enlarged opening edge 2, the first first
Since the projections 14 on the inner peripheral surface of the abdominal portion 15 leading to the valley 61 is provided annularly, when the joint angle of the center axis of the drive-side shaft 8 in a universal joint 7 is increased, also,
Freely in the interior of the joint boot 1 becomes a negative pressure state, it is possible to prevent the first valley 61 side to the bearing side universal joint boot 1 of the universal joint 7 is bitten. Further, the shape of the protrusion 14 may be various shapes depending on the shape of the outer ring 10 of the universal joint 7.
【００１３】〔実施例−１〕 以下に確認試験における結果を記載する。確認試験の条
件は、自在継手７における駆動側シャフト８の中心軸の
継手角度を４０度とし、回転速度を１００（ｒｐｍ）と
した。 （１） 凹部１３を設けたこの考案による自在継手用ブ
ーツ１の場合、７００時間確認試験を行った結果、拡大
開口縁部２から最初の第１谷部６1 に亀裂および破損を
生じなかった。 （２） 凹部を設けなかった従来の自在継手用ブーツ２
１の場合、第１の試料では１５０時間で、拡大開口縁部
２２から最初の立上り部２６に亀裂を生じ、３００時間
で破損し、第２の試料では１３０時間で、拡大開口縁部
２２から最初の立上り部２６に亀裂を生じ、２６０時間
で破損した。従って、この考案による自在継手用ブーツ
１は、従来の自在継手用ブーツ２１と比較して約２倍程
度耐久性が向上したことがわかる。Example 1 The results of the confirmation test are described below. The conditions of the confirmation test were such that the joint angle of the center axis of the drive-side shaft 8 in the universal joint 7 was 40 degrees, and the rotation speed was 100 (rpm). (1) recess 13 when the provided was of the joint boot 1 freely by this invention, as a result of 700 hours confirmation test, did not crack and breakage to the first valley 61 from the enlarged opening edge 2 of the first . (2) Conventional universal joint boot 2 without concave portion
In case 1, the first sample cracked from the enlarged opening edge 22 to the first rising portion 26 at 150 hours, and was broken in 300 hours, and the second sample was cracked from the enlarged opening edge 22 at 130 hours. The first riser 26 cracked and failed in 260 hours. Therefore, it can be seen that the durability of the universal joint boot 1 according to the present invention is improved by about twice as compared with the conventional universal joint boot 21.
【００１４】なお、一般に自在継手用ブーツは、ゴム、
熱可塑性エラストマー等で構成される。Generally, boots for universal joints are made of rubber,
It is composed of a thermoplastic elastomer or the like.
【００１５】[0015]
【考案の効果】この考案は、第１開口縁部に連結する第
１の腹部分の第１谷部側に第１腹部分の肉厚を薄くする
凹部が形成されているから、第１谷部が強く圧縮されて
折曲げられることなく曲線を形成し、しわや亀裂が防止
される。同時に第１谷部の曲線形成は第２腹部分を第１
腹部分側に向かって湾曲状に形成されて第１山部を第１
開口縁部の外径より外方へ移動させて第１山部の折曲げ
を減少させることになる。その結果、第１山部側も急激
な折曲げによって亀裂が発生するのを防止される。順
次、第２開口縁部に向かって第２、３谷部および第２、
３山部の損傷が防止される。更に、第１谷部の曲線形成
は、外輪内方のベアリング側へ第１谷部が噛み込まれて
破損するのも防止される。According to the present invention, the first valley portion is formed on the first valley portion side of the first antinode portion connected to the first opening edge portion so as to reduce the thickness of the first antinode portion. The part is strongly compressed and forms a curve without being bent, and wrinkles and cracks are prevented. At the same time, the curve formation of the first valley part
The first peak is formed in a curved shape toward the abdominal part side and
By moving outward from the outer diameter of the opening edge portion, bending of the first peak portion is reduced. As a result, it is also possible to prevent the first peak portion from generating a crack due to a sharp bend. The second and third valleys and the second,
Damage to the three peaks is prevented. Further, the formation of the curve of the first valley portion prevents the first valley portion from being bitten toward the bearing side inward of the outer ring, thereby preventing breakage.
【図１】この考案に係わる自在継手用ブーツを自在継手
に取付けた断面図である。FIG. 1 is a sectional view showing a universal joint boot according to the present invention mounted on a universal joint.
【図２】この考案に係わる自在継手用ブーツを示す半断
面図である。FIG. 2 is a half sectional view showing a universal joint boot according to the present invention.
【図３】この考案に係わる自在継手用ブーツの拡大開口
部側を示す半断面図である。FIG. 3 is a half sectional view showing the enlarged opening side of the universal joint boot according to the present invention.
【図４】この考案に係わる自在継手用ブーツの谷部が湾
曲状になった状態を示す概略拡大断面図である。FIG. 4 is a schematic enlarged sectional view showing a state in which the valleys of the universal joint boot according to the present invention are curved.
【図５】従来の自在継手用ブーツを自在継手に取付けた
状態を示す断面図である。FIG. 5 is a cross-sectional view showing a state where a conventional universal joint boot is attached to a universal joint.
【図６】従来の自在継手が所定の継手角度にあるときの
自在継手用ブーツの状態を示す半断面図である。FIG. 6 is a half sectional view showing a state of a universal joint boot when a conventional universal joint is at a predetermined joint angle.
【図７】図６の蛇腹部の拡大開口縁部側を示す断面図で
ある。7 is a cross-sectional view showing an enlarged opening edge side of the bellows portion of FIG. 6;
１、２１……自在継手用ブーツ ２、２２……拡大開口縁部 ３、２３……開口縁部 ４、２４……蛇腹部 ５……山部 ６……谷部 ７、２７……自在継手 ８、２８……駆動側シャフト ９、２９……従動側シャフト １０、３０……外輪 １１、１２、３１、３２……固定部材 １３……凹部 １４……突起部 ２５……立下り部 ２６……立上り部 1, 21 Boots for universal joint 2, 22 Enlarged opening edge 3, 23 Opening edge 4, 24 ... Bellows part 5 ... Crest part 6 ... Valley part 7, 27 ... Universal joint 8, 28 Drive shaft 9, 29 Driven shaft 10, 30 Outer ring 11, 12, 31, 32 Fixing member 13 Recess 14 Projection 25 Falling part 26 … Rising part
Claims (1)
側の第１開口縁部（２）および前記第１開口縁部（２）
と反対の他端側で前記自在継手の駆動側シャフト（８）
に嵌着する第２開口縁部（３）を有して前記第１開口縁
部（２）と前記第２開口縁部（３）との間が蛇腹部
（４）に形成された自在継手用ブーツであって、 前記蛇腹部（４）の前記第１開口縁部（２）に連続する
第１の腹部分（１５1）が第１谷部（６1 ）に向かって
縮径すると共に前記第１谷部（６1 ）側の外周面に前記
第１の腹部分（１５1 ）の肉厚を薄くする凹部（１３）
が形成されていることを特徴とする自在継手用ブーツ。1. A first opening edge (2) at one end to be fitted to an outer ring (10) of a universal joint, and the first opening edge (2).
At the other end opposite to the drive side shaft of the universal joint (8)
A universal joint having a second opening edge (3) fitted to the first opening edge (2) and a bellows (4) formed between the first opening edge (2) and the second opening edge (3). And a first belly portion (15 1 ) continuous with the first opening edge (2) of the bellows portion (4) is reduced in diameter toward a first valley (6 1 ). the first valley (61) side outer peripheral surface to said first abdominal portion (15 1) the thickness of the thin recesses of (13)
A boot for a universal joint, characterized in that a boot is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991033899U JP2548917Y2 (en) | 1991-04-15 | 1991-04-15 | Universal joint boots |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991033899U JP2548917Y2 (en) | 1991-04-15 | 1991-04-15 | Universal joint boots |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04119637U JPH04119637U (en) | 1992-10-26 |
| JP2548917Y2 true JP2548917Y2 (en) | 1997-09-24 |
Family
ID=31916450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991033899U Expired - Lifetime JP2548917Y2 (en) | 1991-04-15 | 1991-04-15 | Universal joint boots |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2548917Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2796686B1 (en) * | 1999-07-19 | 2001-12-07 | Gkn Glaenzer Spicer | BELLOWS AND CORRESPONDING TRANSMISSION JOINT |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6199759U (en) * | 1984-12-06 | 1986-06-26 |
-
1991
- 1991-04-15 JP JP1991033899U patent/JP2548917Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04119637U (en) | 1992-10-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |