JPH0687777U - Resin CVJ boots - Google Patents
Resin CVJ bootsInfo
- Publication number
- JPH0687777U JPH0687777U JP3344093U JP3344093U JPH0687777U JP H0687777 U JPH0687777 U JP H0687777U JP 3344093 U JP3344093 U JP 3344093U JP 3344093 U JP3344093 U JP 3344093U JP H0687777 U JPH0687777 U JP H0687777U
- Authority
- JP
- Japan
- Prior art keywords
- diameter mounting
- mounting portion
- valley
- mountain
- mountain group
- 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.)
- Pending
Links
Landscapes
- Diaphragms And Bellows (AREA)
Abstract
(57)【要約】
【目的】 蛇腹部の圧縮側における大径装着部寄りの山
どうしの接触圧を低減してブーツの耐久性を向上する。
【構成】 蛇腹部３における小径装着部５寄りの山群Ａ
と大径装着部４寄りの山群Ｂとの間の境界の谷部１０の
剛性を他の谷部の剛性と比較して大きく形成し、作動角
が与えられて変形したときのブーツ１の圧縮側における
小径装着部５寄りの山群Ａの展開を大きな剛性の谷部１
０で規制して大径装着部４寄りの山群Ｂの山どうしの接
触圧を低減するようにしている。谷部１０の剛性を他の
谷部の剛性と比較して大きくするには、例えば谷部１０
の開き角度θ1 を他の谷部の開き角度θ2 よりも大きく
形成することによって、あるいは肉厚を厚くしたり補強
部材を設けることによって行われる。
(57) [Abstract] [Purpose] To improve the durability of the boot by reducing the contact pressure between the peaks on the compression side of the bellows portion near the large diameter mounting portion. [Structure] Mountain group A in the bellows portion 3 near the small-diameter mounting portion 5
The rigidity of the valley portion 10 at the boundary between the mountain group B near the large-diameter mounting portion 4 and the rigidity of the valley portion 10 is formed to be larger than the rigidity of the other valley portions. The development of the mountain group A near the small diameter mounting portion 5 on the compression side is performed by the valley portion 1 having a large rigidity.
The contact pressure between the mountains of the mountain group B near the large-diameter mounting portion 4 is reduced by limiting the contact pressure to zero. To increase the rigidity of the valley 10 as compared with the rigidity of other valleys, for example, the valley 10
The opening angle θ 1 is larger than the opening angle θ 2 of the other valleys, or by increasing the wall thickness or providing a reinforcing member.
Description
【０００１】[0001]
本考案は、等速ジョイントのように作動角（交差角）θをもって回転する２軸 に蛇腹部両端の大径装着部と小径装着部によって装着されてグリース保持および 防塵などのために使用される樹脂製のブーツ（本明細書においてはこのようなブ ーツを総称してＣＶＪブーツという）に関する。更に、詳述すると、本考案は樹 脂製ＣＶＪブーツの蛇腹部の形状の改良に関する。 INDUSTRIAL APPLICABILITY The present invention is mounted on two shafts that rotate at an operating angle (crossing angle) θ like a constant velocity joint by a large diameter mounting portion and a small diameter mounting portion at both ends of the bellows portion, and is used for grease retention and dust prevention. The present invention relates to resin boots (in this specification, such boots are collectively referred to as CVJ boots). More specifically, the present invention relates to an improvement in the shape of the bellows portion of a resin CVJ boot.
【０００２】[0002]
一般に、ＣＶＪブーツ４２は、図５に示すように、等速ジョイント４１の外輪 部４６に装着される大径の装着部４４と、回転軸部４７に装着される小径の装着 部４５とを蛇腹部４３の両端に備えてなる。このＣＶＪブーツは、従来主流であ ったゴム製の場合には２〜４山の蛇腹部を有しているが、最近開発が進められて いる樹脂製の場合には、ゴムほど柔軟性がないので山の数をゴム製の場合よりも 多くすることによって変形し易いように設けられている。例えば、従来の樹脂製 ＣＶＪブーツとしては、図５に示すような６山形状のほぼ円錐形状のものが公知 である。 In general, the CVJ boot 42 has a large-diameter mounting portion 44 mounted on the outer ring portion 46 of the constant velocity joint 41 and a small-diameter mounting portion 45 mounted on the rotary shaft portion 47 as shown in FIG. It is provided at both ends of the portion 43. This CVJ boot has 2 to 4 bellows in the case of rubber, which has been the mainstream in the past, but it is as flexible as rubber in the case of resin, which has been recently developed. Since there are no crests, the number of crests is set to be larger than that of rubber to facilitate deformation. For example, as a conventional resin-made CVJ boot, a hexagonal, substantially conical shape as shown in FIG. 5 is known.
【０００３】[0003]
しかしながら、ゴム製に比べて山数を多くしなければならない樹脂製ＣＶＪブ ーツの場合、等速ジョイントに大きな作動角がついた際に圧縮側（２軸の交差角 θが狭い方）の山部特に大径装着部４４寄りの山部において山どうしの接触圧が 大きくなり、摩耗等による損傷を招いて耐久性を低下させるという問題がある。 特に、ゴム製ＣＶＪブーツと同じ大きさに製作したり、充填グリース量を減少さ せると共にブーツ周辺の部材との干渉を防ぐためブーツのコンパクト化を図る場 合、大径装着部寄りの山同士の接触圧が非常に大きくなり耐久性が劣るという問 題が生ずる。 However, in the case of a resin CVJ boots, which requires a larger number of peaks than that of rubber, when the constant velocity joint has a large operating angle, the compression side (the one with a narrow biaxial crossing angle θ) There is a problem that the contact pressure between the ridges becomes large, especially in the ridges near the large-diameter mounting portion 44, causing damage due to wear or the like and reducing durability. In particular, if you want to make the boot the same size as the rubber CVJ boot, or if you want to make the boot compact in order to reduce the amount of grease to be filled and to prevent interference with the members around the boot, the mountains close to the large-diameter mounting part There is a problem that the contact pressure is extremely high and the durability is poor.
【０００４】 本考案は、蛇腹部の圧縮側における大径装着部寄りの山どうしの接触圧を低減 し、耐久性を向上させた樹脂製ＣＶＪブーツを提供することを目的とする。An object of the present invention is to provide a resin CVJ boot in which the contact pressure between the mountains on the compression side of the bellows portion near the large diameter mounting portion is reduced and the durability is improved.
【０００５】[0005]
かかる目的を達成するために、本考案者等が種々研究した結果、等速ジョイン トに大きな作動角を与えた場合の圧縮側におけるブーツの変形は全ての山が一様 に軸方向に圧縮されて１つのカーブを描くように起こるのではないかと思われた が、実際にはＳ字を描くように変形することを知見するに至った。これは、図５ に示すように等速ジョイントの作動角の中心Ｐとブーツの大径装着部の取付中心 Ｏとがずれているために、圧縮側の山が全て圧縮されるわけではなく、むしろ部 分的には軸方向に広がるからと思われる。また、伸長側（２軸の交差角の広い方 ）においても全ての山が軸方向に伸長（展開）されるわけではなく部分的に圧縮 されている。そして、広がる山の動きは圧縮されようとする山の動きを助長して 山どうしを強く接触させ、特に山部における接触圧を強くする傾向にある。この ような現象即ち圧縮側でありながら圧縮されずに広がる現象は小径装着部寄りの 山部で起こることが判明した。 As a result of various studies conducted by the present inventors in order to achieve such an object, all the peaks are uniformly compressed in the axial direction in the deformation of the boot on the compression side when a large operating angle is applied to the constant velocity joint. It seemed that it would occur as if drawing a single curve, but in reality, we came to discover that it transforms into an S-shape. This is because the center P of the working angle of the constant velocity joint and the mounting center O of the large-diameter mounting portion of the boot are deviated as shown in FIG. 5, so that not all the ridges on the compression side are compressed. Rather, it seems that it partially spreads in the axial direction. Also, on the extension side (the one where the biaxial crossing angle is wide), not all the peaks are extended (developed) in the axial direction but partially compressed. Then, the spreading movement of the mountains promotes the movement of the mountains that are about to be compressed, and causes the mountains to come into strong contact with each other. It has been found that such a phenomenon, that is, a phenomenon of spreading on the compression side without being compressed occurs in a mountain portion near the small diameter mounting portion.
【０００６】 本考案は、かかる知見に基づいて成されたものであって、蛇腹部と、蛇腹部の 一端に設けられた大径装着部と、蛇腹部の他端に設けられた小径装着部とを備え た樹脂製ＣＶＪブーツにおいて、蛇腹部における小径装着部寄りの山群と大径装 着部寄りの山群との間の谷部の剛性を他の谷部に比較して大きくしている。ここ で、小径装着部寄りの山群と大径装着部側の山群との間の谷部の剛性を他の谷部 よりも大きくするには、その谷部の開き角度を他の谷部に比較して大きくしたり 、あるいはその谷部の肉厚を他の谷部に比較して大きくしたり、若しくはその谷 部に補強部材を設けることが好ましい。The present invention has been made based on the above findings, and has a bellows portion, a large-diameter mounting portion provided at one end of the bellows portion, and a small-diameter mounting portion provided at the other end of the bellows portion. In the resin-made CVJ boot equipped with, the rigidity of the valley between the mountain group near the small-diameter mounting part and the mountain group near the large-diameter mounting part in the bellows part is made larger than other valley parts. There is. Here, in order to make the valley between the mountain group near the small-diameter mounting section and the mountain group on the large-diameter mounting section side more rigid than the other troughs, the opening angle of that trough should be set to the other trough. It is preferable to make it thicker than that of the other valleys, or to make the thickness of the valleys thicker than other valleys, or to provide a reinforcing member in the valleys.
【０００７】[0007]
蛇腹部の小径装着部寄りの山群と大径装着部寄りの山群との境界の谷部の剛性 が他の谷部に比較して大きいため、作動角がつけられることによってブーツが曲 げられる際に、圧縮側において小径装着部寄りの山群が展開しようとしても、そ の動き即ち軸方向への広がりが剛性の大きい谷部で規制される。したがって、等 速ジョイントの作動角が大きくつけられても、圧縮側における小径装着部寄りの 山群の展開が抑制される分だけ大径装着部寄りの山どうしの接触圧が低減される 。 The rigidity of the valley at the boundary between the crests near the small-diameter mounting part and the crests near the large-diameter mounting part of the bellows is greater than that of the other troughs. At this time, even if a mountain group near the small-diameter mounting portion tries to expand on the compression side, its movement, that is, the spread in the axial direction is restricted by the valley portion having high rigidity. Therefore, even if the operating angle of the constant velocity joint is increased, the contact pressure between the peaks near the large diameter mounting portion is reduced by the amount that the expansion of the peaks near the small diameter mounting portion on the compression side is suppressed.
【０００８】[0008]
以下、本考案の構成を図面に示す実施例に基づいて詳細に説明する。 Hereinafter, the configuration of the present invention will be described in detail based on the embodiments shown in the drawings.
【０００９】 図１に本考案の樹脂製ＣＶＪブーツの一実施例を示す。この樹脂製ＣＶＪブー ツは、自動車の等速ジョイント２に装着されるもので、蛇腹部３と、蛇腹部３の 一端で等速ジョイント２の外輪部６に嵌合される大径装着部４と、蛇腹部３の他 端で等速ジョイント２の回転軸部８に嵌合される小径装着部５とを備えている。 尚、大径装着部４及び小径装着部５は、それぞれ固定具７，９により等速ジョイ ント２側に締め付けられて固定される。FIG. 1 shows an embodiment of the resin CVJ boot of the present invention. This resin CVJ boot is mounted on a constant velocity joint 2 of an automobile, and includes a bellows portion 3 and a large-diameter mounting portion 4 fitted to an outer ring portion 6 of the constant velocity joint 2 at one end of the bellows portion 3. And a small-diameter mounting portion 5 fitted to the rotary shaft portion 8 of the constant velocity joint 2 at the other end of the bellows portion 3. The large-diameter mounting portion 4 and the small-diameter mounting portion 5 are fastened and fixed to the constant velocity joint 2 side by the fixtures 7 and 9, respectively.
【００１０】 このＣＶＪブーツは、樹脂製であるためゴム製の場合よりも山数を多くするこ とによって変形し易くするように設けられている。通常、自動車用等速ジョイン トに用いるブーツの場合、少なくとも４〜７山が、場合によっては７山以上の山 が形成されている。尚、ブーツを構成する樹脂には一般に熱可塑性樹脂が用いら れている。Since this CVJ boot is made of resin, it is provided so as to be easily deformed by increasing the number of peaks as compared with the case of rubber. Usually, in the case of boots used for constant velocity joints for automobiles, at least 4 to 7 mountains are formed, and in some cases, 7 or more mountains are formed. Incidentally, a thermoplastic resin is generally used as the resin forming the boot.
【００１１】 蛇腹部３は、大径装着部４寄りの山群Ｂと小径装着部５寄りの山群Ａとの２つ の山群に形成されている。例えば、蛇腹部３の山の数を６とした場合、小径装着 部５寄りの山群Ａには、第１の山Ａ1 、第２の山Ａ2 、第３の山Ａ3 が属し、大 径装着部４寄りの山群Ｂには、第４の山Ｂ4 、第５の山Ｂ5 、第６の山Ｂ6 が属 する。この例では、山数を等しく２分する谷部（第３の山Ａ3 と第４の山Ｂ4 と の間の谷部）１０を境界として大径装着部寄りの山群Ｂと小径装着部寄りの山群 Ａとを区分けしている。そして、この谷部１０の開き角度θ1 を他の谷部の開き 角度θ2 よりも大きく形成することによって、当該谷部１０の剛性を他の谷部の 剛性よりも大きくしている。尚、山群Ａと山群Ｂの山の数は同数とする必要はな く、場合によっては蛇腹部３の中間点よりずれた位置の谷部の剛性を他の谷部の 剛性より大きく設けること、即ち山群Ａと山群Ｂとの山の数を異ならせることも 可能である。The bellows portion 3 is formed into two mountain groups, a mountain group B near the large-diameter mounting portion 4 and a mountain group A near the small-diameter mounting portion 5. For example, when the number of peaks of the bellows part 3 is 6, the first mountain A 1 , the second mountain A 2 , and the third mountain A 3 belong to the mountain group A near the small-diameter mounting portion 5, The fourth mountain B 4 , the fifth mountain B 5 , and the sixth mountain B 6 belong to the mountain group B near the large-diameter mounting portion 4. In this example, a valley group (valley between the third mountain A 3 and the fourth mountain B 4 ) 10 that divides the number of mountains into two equal parts is used as a boundary, and the mountain group B near the large diameter mounting portion and the small diameter mounting are mounted. It is divided into mountain group A, which is closer to the club. By forming the opening angle θ 1 of the valley 10 larger than the opening angle θ 2 of the other valleys, the rigidity of the valley 10 is made larger than the rigidity of the other valleys. The number of peaks in the mountain group A and the mountain group B does not have to be the same, and depending on the case, the rigidity of the valley portion at a position displaced from the midpoint of the bellows portion 3 is set to be larger than the rigidity of the other valley portions. That is, the number of mountains in the mountain group A and the mountain group B can be different.
【００１２】 以上のように構成された樹脂製ＣＶＪブーツによると、等速ジョイントに作動 角がつけられたときには次のように変形する。尚、図２において、蛇腹部３にお ける回転軸部８の上側部分は伸長側であり、下側部分は圧縮側となる。According to the resin-made CVJ boot configured as described above, when the operating angle is applied to the constant velocity joint, it is deformed as follows. In FIG. 2, the upper portion of the rotary shaft portion 8 in the bellows portion 3 is the extension side and the lower portion is the compression side.
【００１３】 例えば、ＣＶＪブーツが図２に示すように等速ジョイントの作動角のために曲 がった場合、圧縮側においては大径装着部４寄りの山群Ｂに属する山Ｂ4 〜Ｂ6 は軸方向に圧縮されると共に、小径装着部５寄りの山群Ａに属する山Ａ1 〜Ａ3 は逆に展開される。このとき、蛇腹部３の中間の谷部１０の開き角度θ1 が大き く剛性が大きいので、小径装着部５寄りの山群Ａの山Ａ1 〜Ａ3 の展開（引張り 方向の力を受けた山の角度の拡開）が谷部１０で規制される。したがって、小径 装着部寄りの山群Ａ全体の展開長（山が広がって軸方向に伸びる長さ）が短く、 大径装着部４寄りの山群Ｂに属する山Ｂ3 〜Ｂ6 が圧縮されるのを助長すること がない。For example, when the CVJ boot is bent due to the operating angle of the constant velocity joint as shown in FIG. 2, the mountains B 4 to B belonging to the mountain group B near the large diameter mounting portion 4 on the compression side. 6 is compressed in the axial direction, and the mountains A 1 to A 3 belonging to the mountain group A near the small-diameter mounting portion 5 are unfolded. At this time, since the opening angle θ 1 of the valley portion 10 in the middle of the bellows portion 3 is large and the rigidity is large, the development of the peaks A 1 to A 3 of the mountain group A closer to the small-diameter mounting portion 5 (the force in the tensile direction is applied). The expansion of the angle of the peak) is restricted by the valley 10. Thus, the developed length of the entire mountain group A of the small diameter mounting portion closer (length extending in the axial direction spreads out the mountains) is short, mountain B 3 .about.B 6 is compressed belonging to mountain group B of the large径装attaching portion 4 near There is no encouragement to do so.
【００１４】 他方、伸長側でも大径装着部４寄りの山群Ｂに属する山Ｂ4 〜Ｂ6 が広げられ ると共に小径装着部５寄りの山群Ａに属する山Ａ1 〜Ａ3 が逆に圧縮される。し かし、他の谷部よりも開き角度θ1 が大きく剛性の高い（変形し難い）谷部１０ が小径装着部５寄りの山群Ａの圧縮と大径装着部４寄りの山群Ｂの展開とが互い に干渉し合うのを規制するため、ブーツ全体が１つの小さな曲率半径で反るのを 防ぐ。このため、ブーツは全体にＳ字形に変形するものの大径装着部４寄りの山 Ｂ3 〜Ｂ6 が互いに強く接触することもなくかつ全体が１つの曲率半径で小さく 曲がらないため内周面が等速ジョイント２の回転軸８に接触することがない。On the other hand, even on the extension side, the mountains B 4 to B 6 belonging to the mountain group B near the large diameter mounting portion 4 are widened, and the mountains A 1 to A 3 belonging to the mountain group A near the small diameter mounting portion 5 are reversed. Is compressed to. However, the valley portion 10 having a larger opening angle θ 1 and higher rigidity (hard to be deformed) than the other valley portions compresses the mountain group A near the small diameter mounting portion 5 and the mountain group B near the large diameter mounting portion 4. It prevents the entire boot from warping with one small radius of curvature as it limits the deployment and interference with each other. Thus, boot the inner peripheral surface for whole not bend less by without any and entire one radius of curvature mountain B 3 .about.B 6 large径装attaching portion 4 closer to what is deformed S-shape is brought into strong contact with each other is There is no contact with the rotary shaft 8 of the constant velocity joint 2.
【００１５】 尚、上述の実施例は本考案の好適な実施の一例ではあるがこれに限定されるも のではなく本考案の要旨を逸脱しない範囲において種々変形実施可能である。例 えば、本実施例では蛇腹部３の小径装着部寄りの山群Ａと大径装着部寄りの山群 Ｂとの中間の谷部１０の剛性を大きくするために谷部の開き角度θ1 を他の谷部 の開き角度θ2 よりも大きく形成したが、これは谷部１０の剛性を大きくするた めの一例にすぎず、図３に示すように小径装着部寄りの山群Ａと大径装着部寄り の山群Ｂとの中間の谷部２１の肉厚を大きく形成してもよく、また図４に示すよ うに小径装着部寄りの山群Ａと大径装着部寄りの山群Ｂとの中間の谷部３１にゴ ムリング等の補強部材３２を設けるようにしてもよい。いずれの場合にも、谷部 ２１，３１の剛性が他の谷部よりも高まって変形し難い（展開し難い）ものとな り、図１の実施例のものと同様の作用・効果を得る。It should be noted that the above-described embodiment is an example of a preferred embodiment of the present invention, but the present invention is not limited to this, and various modifications can be made without departing from the scope of the present invention. For example, in this embodiment, in order to increase the rigidity of the valley 10 between the mountain group A near the small diameter mounting portion and the mountain group B near the large diameter mounting portion of the bellows portion 3, the opening angle θ 1 of the valley portion is increased. Is formed to be larger than the opening angle θ 2 of other valleys, but this is only an example for increasing the rigidity of the valley 10, and as shown in FIG. The valley 21 in the middle of the mountain group B closer to the large-diameter mounting portion may have a larger thickness, and as shown in FIG. 4, the mountain group A closer to the small-diameter mounting portion and the mountain closer to the large-diameter mounting portion. You may make it provide the reinforcement member 32, such as a rubber ring, in the valley part 31 of the middle of the group B. In each case, the rigidity of the valleys 21 and 31 is higher than that of the other valleys, and the deformation is difficult (difficult to develop), and the same action and effect as those of the embodiment of FIG. 1 are obtained. .
【００１６】[0016]
以上の説明より明らかなように、本考案では、蛇腹部の小径装着部寄りの山群 と大径装着部寄りの山群との間の谷部の剛性を他の谷部に比較して大きく形成し たので、等速ジョイントの作動角が大きくつけられてブーツが変形する場合にも 、ブーツの圧縮側における小径装着部寄りの山群の展開が剛性の大きい谷部で規 制され、その分だけ大径装着部寄りの山どうしの接触圧を低減させてブーツの耐 久性を向上できる。 As is clear from the above description, in the present invention, the rigidity of the valley between the mountain group near the small-diameter mounting portion and the mountain group near the large-diameter mounting portion of the bellows portion is larger than that of the other valley portions. Since it is formed, even if the operating angle of the constant velocity joint is increased and the boot is deformed, the development of the mountain group near the small diameter mounting part on the compression side of the boot is restricted by the highly rigid valley part, The durability of the boot can be improved by reducing the contact pressure between the mountains near the large diameter mounting part.
【００１７】 そして、小径装着部寄りの山群と大径装着部寄りの山群との境界の谷部の開き 角度θ1 を他の谷部の開き角度θ2 よりも大きく形成することによってあるいは 肉厚を厚くすることによって、２つの山群の境界の谷部の剛性を他の谷部の剛性 と比較して大きくする場合には、成形型の変更だけで容易に製作することができ 、その他の部材を必要としない。また、補強部材を設けることによって２つの山 群の境界の谷部の剛性を他の谷部の剛性と比較して大きくする場合には、ブーツ 構造には全く変更を与えずにＯリングなどの補強部材を用意するだけで事足りる 。Then, by forming the opening angle θ 1 of the valley portion at the boundary between the mountain group near the small-diameter mounting portion and the mountain group near the large-diameter mounting portion larger than the opening angle θ 2 of the other valley portions, or If the rigidity of the valley at the boundary between the two mountain groups is increased by increasing the wall thickness as compared with the rigidity of the other valleys, it can be easily manufactured simply by changing the mold. No other components are needed. Also, if the rigidity of the valley at the boundary between the two peaks is increased by providing a reinforcing member as compared with the rigidity of the other valleys, the boot structure is not changed at all and the O-ring and other parts are not changed. All you have to do is to prepare a reinforcing member.
【図１】本考案の樹脂製ＣＶＪブーツの一実施例を等速
ジョイントと共に示す縦断面図である。FIG. 1 is a longitudinal sectional view showing an embodiment of a resin CVJ boot of the present invention together with a constant velocity joint.
【図２】等速ジョイントが作動角をもったときの図１の
ブーツの変形状態を示す説明図である。FIG. 2 is an explanatory view showing a deformed state of the boot shown in FIG. 1 when the constant velocity joint has an operating angle.
【図３】本考案の樹脂製ＣＶＪブーツの他の実施例の縦
断面図である。FIG. 3 is a vertical sectional view of another embodiment of the resin CVJ boot of the present invention.
【図４】本考案の樹脂製ＣＶＪブーツの更に他の実施例
の縦断面図である。FIG. 4 is a vertical sectional view of still another embodiment of the resin CVJ boot of the present invention.
【図５】従来の樹脂製ＣＶＪブーツの縦断面図である。FIG. 5 is a vertical cross-sectional view of a conventional resin CVJ boot.
１ ブーツ ２ 等速ジョイント ３ 蛇腹部 ４ 大径装着部 ５ 小径装着部 １０，２１，３１ （剛性の大きい）谷部 Ａ 小径装着部寄りの山群 Ｂ 大径装着部寄りの山群 θ1 谷部１０の開き角度 θ2 他の谷部の開き角度1 boot 2 constant velocity joint 3 bellows part 4 large-diameter mounting part 5 small-diameter mounting part 10, 21, 31 valley (high rigidity) A mountain group near small-diameter mounting part B mountain group near large-diameter mounting part θ 1 valley Opening angle of part 10 2 Opening angle of other valleys
Claims (4)
設けられた大径装着部と、蛇腹部の他端に設けられた小
径装着部とを備えた樹脂製ＣＶＪブーツにおいて、前記
蛇腹部の小径装着部寄りの山群と大径装着部寄りの山群
との間の谷部の剛性を他の谷部に比較して大きくしたこ
とを特徴とする樹脂製ＣＶＪブーツ。1. A resin CVJ boot having four or more bellows parts, a large-diameter mounting part provided at one end of the bellows part, and a small-diameter mounting part provided at the other end of the bellows part. A resin CVJ boot, characterized in that the rigidity of a valley portion between the mountain group near the small-diameter mounting portion and the mountain group near the large-diameter mounting portion of the bellows portion is made larger than other valley portions.
寄りの山群との間の谷部の開き角度を他の谷部に比較し
て大きくしたことを特徴とする請求項１記載の樹脂製Ｃ
ＶＪブーツ。2. The opening angle of the valley between the mountain group near the small-diameter mounting portion and the mountain group near the large-diameter mounting portion is made larger than that of the other valley portions. Resin C described
VJ boots.
寄りの山群との間の谷部の肉厚を他の谷部に比較して大
きくしたことを特徴とする請求項１記載の樹脂製ＣＶＪ
ブーツ。3. The wall thickness of a valley portion between the mountain group near the small-diameter mounting portion and the mountain group near the large-diameter mounting portion is made larger than other valley portions. Resin CVJ described
boots.
寄りの山群との間の谷部に補強部材を付設したことを特
徴とする請求項１記載の樹脂製ＣＶＪブーツ。4. The resin CVJ boot according to claim 1, wherein a reinforcing member is attached to a valley portion between the mountain group near the small-diameter mounting portion and the mountain group near the large-diameter mounting portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3344093U JPH0687777U (en) | 1993-05-31 | 1993-05-31 | Resin CVJ boots |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3344093U JPH0687777U (en) | 1993-05-31 | 1993-05-31 | Resin CVJ boots |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0687777U true JPH0687777U (en) | 1994-12-22 |
Family
ID=12386600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3344093U Pending JPH0687777U (en) | 1993-05-31 | 1993-05-31 | Resin CVJ boots |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0687777U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002257152A (en) * | 2001-03-02 | 2002-09-11 | Keeper Co Ltd | Cvj boots |
-
1993
- 1993-05-31 JP JP3344093U patent/JPH0687777U/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002257152A (en) * | 2001-03-02 | 2002-09-11 | Keeper Co Ltd | Cvj boots |
| JP4546655B2 (en) * | 2001-03-02 | 2010-09-15 | キーパー株式会社 | CVJ boots |
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