JPH085377Y2 - Boots for constant velocity joints - Google Patents

Boots for constant velocity joints

Info

Publication number
JPH085377Y2
JPH085377Y2 JP1989110479U JP11047989U JPH085377Y2 JP H085377 Y2 JPH085377 Y2 JP H085377Y2 JP 1989110479 U JP1989110479 U JP 1989110479U JP 11047989 U JP11047989 U JP 11047989U JP H085377 Y2 JPH085377 Y2 JP H085377Y2
Authority
JP
Japan
Prior art keywords
diameter end
constant velocity
diameter
end portion
small
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
Application number
JP1989110479U
Other languages
Japanese (ja)
Other versions
JPH0349424U (en
Inventor
善一 福村
Original Assignee
エヌティエヌ株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by エヌティエヌ株式会社 filed Critical エヌティエヌ株式会社
Priority to JP1989110479U priority Critical patent/JPH085377Y2/en
Publication of JPH0349424U publication Critical patent/JPH0349424U/ja
Application granted granted Critical
Publication of JPH085377Y2 publication Critical patent/JPH085377Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Diaphragms And Bellows (AREA)

Description

【考案の詳細な説明】 〔産業上の利用分野〕 この考案は等速ジョイント用ブーツに関するものであ
る。
DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a boot for a constant velocity joint.

〔従来の技術〕[Conventional technology]

等速ジョイントを塵埃等から保護するブーツとして、
耐久性の点ですぐれたポリエステル系樹脂(例えば、商
品名「ハイトレル」)によりブロー成形したブーツが使
用される。このようなブーツの一例を第4図及び第5図
に示す。
As boots to protect constant velocity joints from dust,
Blow-molded boots made of a polyester-based resin (for example, a product name “HYTREL”) having excellent durability are used. An example of such a boot is shown in FIGS. 4 and 5.

第5図及び第6図に示すブーツ31は、蛇腹形胴部32の
一方の端部に大径端部33を設け、他方の端部に小径端部
34を設けたものである。大径端部33は等速ジョイント35
の外輪36の外径面の取付部37に嵌合され、加締めタイプ
の特殊なバンド38により固定される。小径端部34はシャ
フト39の取付部40に嵌合され、前記と同様の加締めタイ
プのバンド41により固定される。これらの取付部37、40
にはそれぞれ複数の突条42、43が設けられ、締付力をこ
れらの突条42、43の部分に集中させるようにしている。
外輪36の取付部37には段部44が形成され、その段部44に
大径端部33を押し当てることにより軸方向の移動を防止
し、また、小径端部34の先端内径面に形成された突条45
(第5図参照)を取付部40の溝に嵌めることにより、ブ
ーツ31の軸方向の位置決めを行なう。
The boot 31 shown in FIG. 5 and FIG. 6 has a large diameter end 33 provided at one end of a bellows-shaped body 32 and a small diameter end provided at the other end.
34 is provided. Large diameter end 33 is a constant velocity joint 35
The outer ring 36 is fitted into a mounting portion 37 on the outer diameter surface of the outer ring 36, and is fixed by a special caulking type band 38. The small-diameter end portion 34 is fitted to the mounting portion 40 of the shaft 39 and fixed by the caulking type band 41 similar to the above. These mounting parts 37, 40
Each of them is provided with a plurality of ridges 42 and 43 so that the tightening force is concentrated on the ridges 42 and 43.
A step portion 44 is formed on the mounting portion 37 of the outer ring 36, the large diameter end portion 33 is pressed against the step portion 44 to prevent axial movement, and is formed on the inner diameter surface of the tip of the small diameter end portion 34. Ridge 45
By fitting (see FIG. 5) into the groove of the mounting portion 40, the boot 31 is axially positioned.

上記のブーツ31は、シャフト39を内輪46に組込む前
に、その小径端部34をシャフト39のセレーション47側の
端部から挿入し、シャフト39を内輪46に組込んだ後、大
径端部33と小径端部34をそれぞれ外輪36とシャフト39の
各取付部37、40に締付バンド38、41により固定する。
The boot 31 has a large-diameter end portion after the shaft 39 is assembled to the inner race 46 by inserting the small-diameter end portion 34 from the end portion of the shaft 39 on the serration 47 side before the shaft 39 is assembled to the inner race 46. 33 and the small diameter end 34 are fixed to the outer ring 36 and the respective mounting portions 37 and 40 of the shaft 39 by tightening bands 38 and 41, respectively.

〔考案が解決しようとする課題〕[Problems to be solved by the device]

上記のブーツ31の素材は非常に硬い一方、引張り疲労
強度が低いため、胴部32が屈曲したときひだ48の部分に
おける引張応力の発生を軽減する必要があり、そのため
に、胴部32は軸方向に圧縮して取付けられる。しかし、
胴部32を圧縮状態に取付けることは、作業性を悪くする
原因になっている。また同様の理由から胴部32の外径を
大きくしてひだ48の長さを大きくとる必要があるため、
ブーツ31の取付スペースやコスト面で不利となる。
While the material of the boot 31 described above is very hard, the tensile fatigue strength is low, so that it is necessary to reduce the occurrence of tensile stress in the portion of the pleats 48 when the body 32 is bent, and therefore, the body 32 has a shaft. It is installed by compressing in the direction. But,
Attaching the body portion 32 in a compressed state is a cause of impairing workability. For the same reason, it is necessary to increase the outer diameter of the body portion 32 and increase the length of the pleats 48.
It is disadvantageous in terms of installation space and cost of the boot 31.

また、素材が硬いことにより、大径端部33及び小径端
部34は、加締めタイプの特殊なバンド38、41を用いる必
要があると共に、これらのバンド38、41の締付けが悪い
と緩み易く、緩みが進行するとブーツ31が外れることが
ある。
In addition, because the material is hard, the large diameter end 33 and the small diameter end 34 need to use special caulking type bands 38 and 41, and if the bands 38 and 41 are not tightly tightened, they easily loosen. If the looseness progresses, the boot 31 may come off.

更に、小径端部34の内径は、セレーション47の直径よ
りも大きい寸法に形成されるが、その小径端部34と取付
部40との間にすき間を生じさせないために取付部40の直
径を小径端部34の内径に一致する寸法に形成しなければ
ならない。そのため、シャフト39の素材の直径は取付部
40の直径(セレーション47の直径よりも大きい。)より
も大きく選定しなければならず、素材の直径が大きい分
だけシャフト39の旋削代が多くなる欠点がある。
Further, the inner diameter of the small-diameter end portion 34 is formed to have a size larger than the diameter of the serration 47, but the diameter of the mounting portion 40 has a small diameter so as not to create a gap between the small-diameter end portion 34 and the mounting portion 40. It must be dimensioned to match the inside diameter of the end 34. Therefore, the diameter of the material of the shaft 39 is
It must be selected larger than the diameter of 40 (larger than the diameter of the serration 47), and there is a disadvantage that the turning allowance of the shaft 39 increases due to the larger diameter of the material.

また、小径端部34においては、位置決めのためにその
内径面に突条45が設けられる。しかし、この突条45をブ
ーツ31のブロー成形時に同時に精度良く形成することは
特殊な技術を要する。
Further, at the small diameter end portion 34, a ridge 45 is provided on the inner diameter surface for positioning. However, a special technique is required to form the ridges 45 with high precision at the same time when the boot 31 is blow-molded.

そこで、この考案は上述の諸問題を解決することを考
案の技術的課題とする。
Therefore, the technical problem of the present invention is to solve the above-mentioned problems.

〔課題を解決するための手段〕[Means for solving the problem]

上記の課題を解決するために、この考案の第1の手段
は、蛇腹形胴部の両端に大径端部と小径端部を設けてな
る等速ジョイント用ブーツにおいて、上記の蛇腹形胴部
を、大径端部を含む胴主体と小径端部を含む胴補助体と
により構成し、胴主体を硬質合成樹脂により形成すると
共に胴補助体を柔軟な素材により形成し、胴主体と胴補
助体とをシャフトの外径面に摺接する連結部により一体
化した構成としたものである。
In order to solve the above problems, the first means of the present invention is to provide a boot for a constant velocity joint in which a large diameter end portion and a small diameter end portion are provided at both ends of a bellows-shaped body portion. Is composed of a trunk main body including a large-diameter end and a trunk auxiliary body including a small-diameter end, and the trunk main body is formed of a hard synthetic resin and the trunk auxiliary body is formed of a flexible material. The body and the body are integrated by a connecting portion that is in sliding contact with the outer diameter surface of the shaft.

〔作用〕[Action]

上記構成のブーツは、等速ジョイントの屈曲及び伸縮
動作に伴い胴主体が屈曲及び伸縮し、胴主体の伸縮に追
従して胴補助体が伸縮する。
In the boot having the above-described structure, the trunk main body bends and expands and contracts as the constant velocity joint bends and expands and contracts, and the trunk auxiliary body expands and contracts following the expansion and contraction of the trunk main body.

〔実施例〕 第1図に示す第1実施例のブーツ1は、前述の「ハイ
トレル」等のポリエステル系合成樹脂製の胴主体2とCR
(クロロプレン)ゴム製の胴補助体3とから成る。胴主
体2は、複数のひだ4を有すると共に、等速ジョイント
5の外輪6の取付部7に嵌合される大径端部8を有す
る。取付部7には2本の突条9が形成され、従来の段部
44(第5図参照)に相当するものはない。段部44が不要
の理由は後述する。締付バンド10は従来と同様の加締タ
イプのものを使用する。
[Embodiment] The boot 1 according to the first embodiment shown in FIG. 1 includes a body 2 made of polyester synthetic resin such as "Hytrel" and a CR body.
(Chloroprene) rubber body auxiliary body 3. The trunk main body 2 has a plurality of pleats 4 and also has a large-diameter end portion 8 that is fitted to the mounting portion 7 of the outer ring 6 of the constant velocity joint 5. Two ridges 9 are formed on the mounting portion 7, and the conventional step portion is formed.
There is no equivalent to 44 (see Figure 5). The reason why the step portion 44 is unnecessary will be described later. As the tightening band 10, a tightening type similar to the conventional one is used.

上記の胴主体2の他端に胴補助体3との連結部11が形
成される。連結部11と等速ジョイント5のシャフト12の
外径面との間に若干の間隙が設けられ、その間隙によ
り、連結部11が径方向に位置決めされた状態で軸方向に
摺動することができる。
A connecting portion 11 for connecting the auxiliary body 3 is formed at the other end of the main body 2. A small gap is provided between the connecting portion 11 and the outer diameter surface of the shaft 12 of the constant velocity joint 5, and the gap allows the connecting portion 11 to slide in the axial direction while being positioned in the radial direction. it can.

連結部11の外径面には係合溝13が形成され、胴補助体
3の一端に形成された連結部14がその係合溝13に適当な
しめ代をもって係合一体化され、これにより胴主体2と
胴補助体3とが連結される。
An engaging groove 13 is formed on the outer diameter surface of the connecting portion 11, and a connecting portion 14 formed at one end of the body auxiliary body 3 is integrally engaged with the engaging groove 13 with a proper interference. The trunk main body 2 and the trunk auxiliary body 3 are connected.

胴補助体3も複数のひだ15を有し、ブーツ1の小径端
部16においてシャフト12の周方向の取付溝18に適当なし
め代をもって嵌合され、軸方向に位置決めされる。この
場合締付バンドは不要である。
The body auxiliary body 3 also has a plurality of pleats 15, and is fitted in the mounting groove 18 in the circumferential direction of the shaft 12 at the small-diameter end portion 16 of the boot 1 with an appropriate interference, and is positioned in the axial direction. In this case no tightening band is required.

なお、連結部11、14相互の一体化を一層確実にするた
めに、第2図に示すように連結部14の外径面に設けた溝
20に締付バンド21を嵌め、これにより締付ける。但し連
結部11の内径面とシャフト12との間の間隙は維持する。
また、第3図に示すように胴主体2の連結部11に設けた
突起22を胴補助体3の連結部14の孔23に嵌合することに
より両者の一体化を確実にするようにしてもよい。
In order to further ensure the integration of the connecting portions 11 and 14, the groove formed on the outer diameter surface of the connecting portion 14 as shown in FIG.
Fit the tightening band 21 on the 20 and tighten it. However, the gap between the inner diameter surface of the connecting portion 11 and the shaft 12 is maintained.
Further, as shown in FIG. 3, the projection 22 provided on the connecting portion 11 of the trunk main body 2 is fitted into the hole 23 of the connecting portion 14 of the trunk auxiliary body 3 to ensure the integration of the two. Good.

上記の構成でなるブーツ1は、等速ジョイント5が動
作して屈曲伸縮した場合、胴主体2のひだ4が変形する
と共に、連結部11、14が軸方向に摺動し、胴補助体3の
ひだ15がこれに追従して伸縮する。
In the boot 1 having the above-described configuration, when the constant velocity joint 5 operates and bends and expands, the folds 4 of the main body 2 are deformed, and the connecting portions 11 and 14 slide in the axial direction, so that the auxiliary body 3 The folds 15 follow and expand and contract.

従来の場合は、等速ジョイント5が屈曲した場合に、
胴主体2のひだ4に生ずる引張応力を緩和するため、胴
主体2のひだ4を軸方向に圧縮した状態で取付けていた
が、この考案の場合は、ひだ4に作用する引張応力は、
連結部11、14の摺動及びその摺動に追従して伸縮する胴
補助体3により吸収される。従って、ひだ4を軸方向に
圧縮させる必要がなく、そのために取付部7に従来の段
部44のごときものは不要である。
In the conventional case, when the constant velocity joint 5 is bent,
In order to relieve the tensile stress generated in the pleats 4 of the trunk main body 2, the pleats 4 of the main body 2 were attached in a state of being compressed in the axial direction. In the case of this invention, the tensile stress acting on the pleats 4 is
It is absorbed by the sliding movement of the connecting portions 11 and 14 and the body assisting body 3 which expands and contracts following the sliding movement. Therefore, it is not necessary to axially compress the pleats 4, and therefore the mounting portion 7 such as the conventional step portion 44 is unnecessary.

また、連結部11が嵌合したシャフト12の部分の直径
は、セレーション24の部分の直径と等しいものであれば
よく、それ以上に太いものである必要はない。
Further, the diameter of the shaft 12 portion into which the connecting portion 11 is fitted may be the same as the diameter of the serration portion 24, and need not be thicker than that.

なお、胴補助体3は、軸方向に伸縮でき、かつシャフ
ト1との間のシールができるものであればよいので、そ
の材料はCRゴム以外、適宜なものを使用することができ
る。
The body auxiliary body 3 may be made of any material other than CR rubber, as long as it can be expanded and contracted in the axial direction and can seal with the shaft 1.

〔考案の効果〕[Effect of device]

この考案は以上のごときものであるから、次に列挙す
る効果がある。
Since this invention is as described above, it has the following effects.

(1)小径端部側において従来用いられていた加締タイ
プの特殊な締付バンドを用いる必要がなく、コストの低
減、作業性の向上を図ることができる。
(1) It is not necessary to use a crimping type special tightening band that has been conventionally used on the small-diameter end portion side, and it is possible to reduce cost and improve workability.

(2)シャフト素材の直径を従来のものより小さくする
ことができ、従って旋削代を少なくすることができる。
(2) The diameter of the shaft material can be made smaller than that of the conventional one, so that the turning allowance can be reduced.

(3)従来はブーツの小径端部の内径に位置決め用の突
条が特殊な方法で形成されていたが、このような突条が
不要になると共に、連結部の内径面の精度はラフなもの
でよいので、ブーツの成形が容易になる。
(3) Conventionally, a ridge for positioning was formed on the inner diameter of the small-diameter end of the boot by a special method. However, such a ridge is not necessary and the accuracy of the inner diameter surface of the connecting portion is rough. The boots can be easily molded since any material can be used.

(4)胴主体を圧縮状態で取付ける必要がないので、組
付作業が容易であり、また外輪の取付部に段部を設ける
必要もない。
(4) Since it is not necessary to mount the main body in a compressed state, the assembling work is easy, and it is not necessary to provide a step on the mounting portion of the outer ring.

(5)胴主体の小径部がシャフトに対して摺動自在であ
るので、胴主体に作用する引張応力又は圧縮応力が低減
し、ブーツの寿命が向上する。
(5) Since the small diameter portion of the body is slidable with respect to the shaft, the tensile stress or compressive stress acting on the body is reduced, and the life of the boot is improved.

【図面の簡単な説明】[Brief description of drawings]

第1図は第1実施例の使用状態における縦断正面図、第
2図及び第3図は同上の変形例の一部を示す縦断正面
図、第4図は従来例の縦断正面図、第5図は第4図の一
部拡大断面図である。 1……ブーツ、2……胴主体、3……胴補助体、4……
ひだ、5……等速ジョイント、6……外輪、7……取付
部、8……大径端部、9……突条、10……締付バンド、
11……連結部、12……シャフト、13……係合溝、14……
連結部、15……ひだ、16……小径端部、18……取付溝、
20……溝、21……締付バンド、22……突起、23……孔、
24……セレーション。
FIG. 1 is a vertical sectional front view in a use state of the first embodiment, FIGS. 2 and 3 are vertical sectional front views showing a part of a modified example of the same, and FIG. 4 is a vertical sectional front view of a conventional example. The drawing is a partially enlarged sectional view of FIG. 1 ... boots, 2 ... body mainly, 3 ... body assisting body, 4 ...
Folds, 5 ... Constant velocity joint, 6 ... Outer ring, 7 ... Mounting part, 8 ... Large diameter end, 9 ... Projection, 10 ... Tightening band,
11 …… Coupling part, 12 …… Shaft, 13 …… Engagement groove, 14 ……
Connection part, 15 pleats, 16 ...... small diameter end part, 18 ...... mounting groove,
20 …… groove, 21 …… tightening band, 22 …… projection, 23 …… hole,
24 …… Serration.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】蛇腹形胴部の両端に大径端部と小径端部を
設けてなる等速ジョイント用ブーツにおいて、上記の蛇
腹形胴部を、大径端部を含む胴主体と小径端部を含む胴
補助体とにより構成し、胴主体を硬質合成樹脂により形
成すると共に胴補助体を柔軟な素材により形成し、胴主
体と胴補助体とをシャフトの外径面に摺接する連結部に
より一体化したことを特徴とする等速ジョイント用ブー
ツ。
1. A boot for a constant velocity joint, comprising a large-diameter end portion and a small-diameter end portion at both ends of a bellows-shaped body portion, wherein the bellows-shaped body portion includes a main body and a small-diameter end portion including the large-diameter end portion. And a body auxiliary body including a portion, the main body of the body is made of a hard synthetic resin, the body auxiliary body is made of a flexible material, and the body main body and the body auxiliary body are slidably in contact with the outer diameter surface of the shaft. Boots for constant velocity joints characterized by being integrated by.
JP1989110479U 1989-09-20 1989-09-20 Boots for constant velocity joints Expired - Lifetime JPH085377Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1989110479U JPH085377Y2 (en) 1989-09-20 1989-09-20 Boots for constant velocity joints

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989110479U JPH085377Y2 (en) 1989-09-20 1989-09-20 Boots for constant velocity joints

Publications (2)

Publication Number Publication Date
JPH0349424U JPH0349424U (en) 1991-05-14
JPH085377Y2 true JPH085377Y2 (en) 1996-02-14

Family

ID=31659008

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989110479U Expired - Lifetime JPH085377Y2 (en) 1989-09-20 1989-09-20 Boots for constant velocity joints

Country Status (1)

Country Link
JP (1) JPH085377Y2 (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0227695Y2 (en) * 1984-09-13 1990-07-26

Also Published As

Publication number Publication date
JPH0349424U (en) 1991-05-14

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