JP4131974B2 - Joint boots - Google Patents

Joint boots Download PDF

Info

Publication number
JP4131974B2
JP4131974B2 JP2005512253A JP2005512253A JP4131974B2 JP 4131974 B2 JP4131974 B2 JP 4131974B2 JP 2005512253 A JP2005512253 A JP 2005512253A JP 2005512253 A JP2005512253 A JP 2005512253A JP 4131974 B2 JP4131974 B2 JP 4131974B2
Authority
JP
Japan
Prior art keywords
support wall
wall portion
diameter side
wall portions
circumferential direction
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
Application number
JP2005512253A
Other languages
Japanese (ja)
Other versions
JPWO2006040821A1 (en
Inventor
武範 大下
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyo Tire Corp
Original Assignee
Toyo Tire and Rubber Co Ltd
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 Toyo Tire and Rubber Co Ltd filed Critical Toyo Tire and Rubber Co Ltd
Publication of JPWO2006040821A1 publication Critical patent/JPWO2006040821A1/en
Application granted granted Critical
Publication of JP4131974B2 publication Critical patent/JP4131974B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/84—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor
    • F16D3/843—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor enclosed covers
    • F16D3/845—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor enclosed covers allowing relative movement of joint parts due to the flexing of the cover
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
    • F16D3/202—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints
    • F16D3/205—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints the pins extending radially outwardly from the coupling part
    • F16D3/2055—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints the pins extending radially outwardly from the coupling part having three pins, i.e. true tripod joints

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Diaphragms And Bellows (AREA)
  • Sealing Devices (AREA)

Description

本発明は、主として自動車のトリポートタイプの等速ジョイントなどに用いられる蛇腹状のジョイントブーツに関するものである。  The present invention relates to a bellows-shaped joint boot mainly used for an automobile triport type constant velocity joint or the like.

車両のドライブシャフト等に用いられる等速ジョイントの一つとして、トリポートタイプのジョイントが知られている。  A triport type joint is known as one of constant velocity joints used for vehicle drive shafts and the like.

トリポートタイプの等速ジョイントは、例として、図６，７に示すように、入力側と出力側の一方のシャフト１に、ローラ２を持つ３本のトラニオン３を軸直角方向に突設して構成したトリポート４と、他方のシャフト５の端部に設けたアウターケース６とからなる。アウターケース６は、その内周にトリポート４に対応する軸方向の３本の摺動溝６ａを有する。等速ジョイントは、トリポート４のローラ２を摺動溝６ａに対して軸方向に摺動可能に嵌め合わせることにより、両シャフト１，５の角度付けを可能にしながら、回転トルクを伝達できるように構成されている。 For example, as shown in FIGS. 6 and 7 , the triport type constant velocity joint has three trunnions 3 each having a roller 2 protruding in a direction perpendicular to the axis on one shaft 1 on the input side and the output side. And the outer case 6 provided at the end of the other shaft 5. The outer case 6 has three sliding grooves 6a in the axial direction corresponding to the tripart 4 on the inner periphery thereof. The constant velocity joint is capable of transmitting rotational torque while allowing the shafts 1 and 5 to be angled by fitting the roller 2 of the triport 4 with the sliding groove 6a so as to be slidable in the axial direction. It is configured.

このような等速ジョイントにおいては、ジョイント内部への塵埃や異物の侵入防止のため、あるいはまた封入されているグリースを保持するために、一般に、アウターケース６からトリポート４側のシャフト１の部分を覆うように適度に伸縮や曲げ変形が可能な蛇腹状をなすジョイントブーツ１００が装着されている。ジョイントブーツ１００は、軸方向の一端部がアウターケース６の外周に嵌着されてリング状バンド等の締付部材７により固定される大径側取付部１０１として形成され、他端部がトリポート４側のシャフト１の外周にリング状バンド等の締付部材８により固定される小径側取付部１０２として形成され、両者１０１，１０２が蛇腹部１０３により一体に連結されて構成されている。  In such a constant velocity joint, in order to prevent dust and foreign matter from entering the joint, or to keep the sealed grease, generally, the portion of the shaft 1 on the side of the triport 4 from the outer case 6 is used. A joint boot 100 having a bellows shape that can be appropriately expanded and contracted and bent so as to cover is mounted. The joint boot 100 is formed as a large-diameter side attachment portion 101 having one end portion in the axial direction fitted on the outer periphery of the outer case 6 and fixed by a fastening member 7 such as a ring-shaped band, and the other end portion is the tripart 4. It is formed as a small-diameter side mounting portion 102 that is fixed to the outer periphery of the side shaft 1 by a fastening member 8 such as a ring-shaped band, and the both 101 and 102 are integrally connected by a bellows portion 103.

図７に示すように、アウターケース６は、内周の摺動溝６ａの配置に対応して、外周には周方向に３つの均等配置された凹状部６ｂを備え、従って、アウターケース６の外周形状は周方向に凹凸形状をなす非円形状に形成されている。そのため、アウターケース６に取り付けられるジョイントブーツ１００の大径側取付部１０１は、その内周形状がアウターケース６の外周形状に対応した非円形状をなしている。すなわち、大径側取付部１０１の内周は、アウターケース６の凹状部６ｂに対応して周方向の３箇所において内方に凸状に張り出し形成されている。 As shown in FIG. 7 , the outer case 6 is provided with three concave portions 6 b arranged in the circumferential direction on the outer periphery corresponding to the arrangement of the sliding grooves 6 a on the inner periphery. The outer peripheral shape is formed in a non-circular shape having an uneven shape in the circumferential direction. Therefore, the large-diameter side attachment portion 101 of the joint boot 100 attached to the outer case 6 has a noncircular shape whose inner peripheral shape corresponds to the outer peripheral shape of the outer case 6. That is, the inner periphery of the large-diameter side mounting portion 101 is formed to project inwardly at three locations in the circumferential direction corresponding to the concave portion 6 b of the outer case 6.

このような大径側取付部１０１の内方への張り出し部１０４を図６に示すような中実な厚肉部とした場合、大径側取付部１０１の周方向において厚肉部と薄肉部が交互に形成されることから、アウターケース６との間で十分なシール性を確保しにくいという問題がある。 When such an inwardly projecting portion 104 of the large diameter side mounting portion 101 is a solid thick portion as shown in FIG. 6 , a thick portion and a thin portion in the circumferential direction of the large diameter side mounting portion 101. Are formed alternately, and there is a problem that it is difficult to secure a sufficient sealing property with the outer case 6.

かかる問題を解決するための手段として、下記特許文献１には、大径側取付部が、共通の円筒面内に配された複数の円弧状壁部と、該円弧状壁部間において内方に湾曲状に張り出し形成された張り出し壁部とを備え、該張り出し壁部の外側面にこれを弾性的に支持する支持壁部が周方向に間隔をおいて設けられた構成が開示されている。また、この周方向に間隔をおいて設けられた軸方向に延びる複数の支持壁部を、周方向に延びる支持壁部で補強した構成が開示されている。従って、特許文献１において、張り出し壁部の外側面を支持する支持壁部は、大径側取付部の軸方向に延びる複数の支持壁部と、該複数の軸方向支持壁部を連結する周方向に延びる単一の支持壁部とで構成されている。
：欧州特許出願公開第０９１５２６４号（特に図３） As means for solving such a problem, Patent Document 1 below discloses that a large-diameter side mounting portion has a plurality of arc-shaped wall portions arranged in a common cylindrical surface, and an inner side between the arc-shaped wall portions. And a projecting wall portion projecting in a curved shape, and a support wall portion that elastically supports the projecting wall portion is provided on the outer surface of the projecting wall portion at intervals in the circumferential direction. . In addition, a configuration is disclosed in which a plurality of axially extending support wall portions provided at intervals in the circumferential direction are reinforced with support wall portions extending in the circumferential direction. Therefore, in Patent Document 1, the support wall portion that supports the outer surface of the overhanging wall portion includes a plurality of support wall portions that extend in the axial direction of the large-diameter side attachment portion, and a circumference that connects the plurality of axial support wall portions. It is comprised with the single support wall part extended in the direction.
: European Patent Application No. 0915264 (especially FIG. 3)

上記ジョイントブーツにおいて大径側取付部をアウターケースに外嵌固定する際、締付部材による締め付け力は、大径側取付部の外周面において、その半径方向内方だけでなく、周方向にも作用する。このような周方向に作用する力に対して、上記特許文献１の支持壁部構成では、軸方向に延びる複数の支持壁部が何らの補強効果も持たないので、締め付け時に支持壁部が倒れやすく、その結果、シール性を損なうおそれがある。  When the large-diameter side mounting part is externally fixed to the outer case in the joint boot, the fastening force by the tightening member is not only radially inward but also circumferentially on the outer peripheral surface of the large-diameter side mounting part. Works. With respect to the force acting in the circumferential direction, in the support wall portion configuration of Patent Document 1 described above, since the plurality of support wall portions extending in the axial direction do not have any reinforcing effect, the support wall portion collapses during tightening. As a result, the sealing performance may be impaired.

本発明は、このような点に鑑みてなされたものであり、トリポートタイプの等速ジョイントのように非円形な外周形状のアウターケースに取り付けられるジョイントブーツにおいて、従来にも増して高いシール性を発揮できるものを提供することを目的とする。  The present invention has been made in view of the above points, and in joint boots attached to a non-circular outer case like a triport type constant velocity joint, the sealing performance is higher than before. It aims at providing what can demonstrate.

本発明に係るジョイントブーツは、周方向に複数の凹状部を有する外周形状のアウターケースに締付部材を用いて外嵌固定される大径側取付部と、シャフトに取り付けられる小径側取付部と、両者を一体に連結する蛇腹部とを備えるジョイントブーツであって、前記大径側取付部は、共通の円筒面内において周方向に間隔をおいて配された複数の円弧状壁部と、該円筒状壁部間において径方向内方に湾曲状に張り出し形成された張り出し壁部とを備えてなり、前記張り出し壁部の外側面に当該外側面を支持する第１支持壁部と第２支持壁部が設けられ、前記第１支持壁部と第２支持壁部は、前記大径側取付部の周方向に関して反対側に傾斜して延び、かつ、交差していることを特徴とする。  The joint boot according to the present invention includes a large-diameter side mounting portion that is externally fixed to the outer case having a plurality of concave portions in the circumferential direction using a fastening member, and a small-diameter side mounting portion that is attached to the shaft. A joint boot comprising a bellows part integrally connecting the two, wherein the large-diameter side attachment part includes a plurality of arcuate wall parts arranged at intervals in the circumferential direction within a common cylindrical surface; A projecting wall portion that is curved and formed radially inwardly between the cylindrical wall portions; a first support wall portion that supports the outer surface on the outer surface of the projecting wall portion; A support wall portion is provided, and the first support wall portion and the second support wall portion extend in an inclined manner on the opposite side with respect to the circumferential direction of the large-diameter side mounting portion, and intersect with each other. .

本発明のジョイントブーツであると、アウターケースの凹状部に嵌合される大径側取付部における内方への張り出し部を、湾曲状の張り出し壁部と、その外側面に設けられた第１及び第２の支持壁部とで構成したので、該張り出し部を中実な厚肉部で形成する場合に比べて、成形後の収縮に起因するヒケの発生を防止することができ、また、厚肉部と薄肉部との締付力の不均一も軽減することができる。そのため、成形性及びシール性を改善することができる。  In the joint boot of the present invention, the inwardly projecting portion of the large-diameter mounting portion that is fitted to the concave portion of the outer case has a curved projecting wall portion and a first surface provided on the outer surface thereof. And the second support wall portion, it is possible to prevent the occurrence of sink marks due to shrinkage after molding, compared to the case where the overhang portion is formed of a solid thick portion, Unevenness of the tightening force between the thick part and the thin part can also be reduced. Therefore, moldability and sealability can be improved.

また、特に本発明であると、上記張り出し壁部の外側面を支持する支持壁部を、大径側取付部の周方向に対して互いに反対側に傾斜して延び、かつ交差する第１支持壁部と第２支持壁部とで構成したので、締付部材による締め付け時に作用する周方向の力に対して第１支持壁部と第２支持壁部とが相互に補強し合う。そのため、締め付け時に支持壁部が倒れにくくなり、シール性を一層向上することができる。  Further, particularly in the present invention, the support wall portion that supports the outer surface of the overhanging wall portion extends in a direction opposite to each other with respect to the circumferential direction of the large-diameter side mounting portion, and crosses the first support. Since it comprised with the wall part and the 2nd support wall part, the 1st support wall part and the 2nd support wall part mutually reinforce with respect to the force of the circumferential direction which acts at the time of the fastening by a fastening member. For this reason, the support wall portion does not easily fall down when tightening, and the sealing performance can be further improved.

本発明のジョイントブーツは、上記構成に加え、前記第１支持壁部が互いに平行に複数設けられ、前記第２支持壁部が互いに平行に複数設けられ、少なくとも１の前記第１支持壁部が２以上の前記第２支持壁部と交差し、少なくとも１の前記第２支持壁部が２以上の前記第１支持壁部と交差していることを特徴とする。これにより、第１支持壁部と第２支持壁部との補強効果が高まることから、締め付け時における支持壁部の倒れをより確実に防いで、シール性を更に向上することができる。 Joint boot tool of the present invention, in addition to the structure described above, the first support wall portion in parallel to provided a plurality of each other, and the second support wall portion in parallel to provided a plurality of mutually, at least one of the first support wall portion There intersects two or more of the second support wall portion, characterized that you have to cross the at least one of the second support wall is two or more of the first support wall. Thereby, since the reinforcement effect of a 1st support wall part and a 2nd support wall part increases, the fall of the support wall part at the time of clamping | tightening can be prevented more reliably, and a sealing performance can be improved further.

本発明のジョイントブーツにおいては、前記第１支持壁部及び前記第２支持壁部の外縁が前記円弧状壁部と共通の円筒面に沿って形成されていることが、締付部材による安定した締め付け性を確保する上で好ましい。  In the joint boot of the present invention, the outer edges of the first support wall portion and the second support wall portion are formed along a common cylindrical surface with the arcuate wall portion. It is preferable for securing the tightening property.

本発明によれば、トリポートタイプの等速ジョイントのように非円形な外周形状のアウターケースに取り付けられるジョイントブーツにおいて、従来にも増して高いシール性を発揮させることができる。  ADVANTAGE OF THE INVENTION According to this invention, in a joint boot attached to the outer case of a non-circular outer periphery shape like a triport type constant velocity joint, a high sealing performance can be exhibited more than before.

以下、本発明の実施の形態を図面にもとづいて説明する。  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１は本発明の一実施形態に係るジョイントブーツ１０の半断面半側面図、図２はその大径側の正面図である。このジョイントブーツ１０は、上記した図６，７に示す自動車用のトリポートタイプの等速ジョイントに装着される熱可塑性エラストマー樹脂製ブーツであり、一端側の小径側取付部１２と、該小径側取付部１２と離間して同軸的に配置された他端側の大径側取付部１４と、これら小径側取付部１２と大径側取付部１４を一体に連結する中空状の蛇腹部１６とからなり、インジェクションブロー成形などの公知の成形方法により一体に形成されている。 FIG. 1 is a half sectional side view of a joint boot 10 according to an embodiment of the present invention, and FIG. 2 is a front view of the large diameter side thereof. This joint boot 10 is a thermoplastic elastomer resin boot to be mounted on the above-described triport type constant velocity joint for automobiles shown in FIGS. 6 and 7 , and includes a small-diameter side mounting portion 12 on one end side and the small-diameter side. A large-diameter side attachment portion 14 on the other end side that is coaxially disposed apart from the attachment portion 12, and a hollow bellows portion 16 that integrally connects the small-diameter side attachment portion 12 and the large-diameter side attachment portion 14. And is integrally formed by a known molding method such as injection blow molding.

小径側取付部１２は、トリポート４側のシャフト１に外嵌固定される短円筒状をなしており、外周面にリング状の締付部材８を受け入れるための周方向に延びる固定用凹部１８が設けられている。大径側取付部１４は、アウターケース６に外嵌固定される略短円筒状をなしており、小径側取付部１２と同軸的に、即ち共通の中心線Ｌを持つように配置されている。蛇腹部１６は、両端に口径差のある断面円形の蛇腹体であり、その内部にグリース封入空間を形成する。蛇腹部１６は、大径側取付部１４から小径側取付部１２へと順次に小さくなるようにテーパ状に形成されている。  The small-diameter side mounting portion 12 has a short cylindrical shape that is fitted and fixed to the shaft 1 on the triport 4 side, and a fixing concave portion 18 that extends in the circumferential direction for receiving the ring-shaped fastening member 8 on the outer peripheral surface. Is provided. The large-diameter side mounting portion 14 has a substantially short cylindrical shape that is fitted and fixed to the outer case 6, and is arranged coaxially with the small-diameter side mounting portion 12, that is, with a common center line L. . The bellows portion 16 is a bellows body having a circular cross section with a difference in diameter at both ends, and forms a grease filled space therein. The bellows portion 16 is formed in a tapered shape so as to be sequentially reduced from the large diameter side mounting portion 14 to the small diameter side mounting portion 12.

図２に示すように、大径側取付部１４は、外周形状が円形状をなしており、その一方、内周形状は、周方向に複数（この実施形態では３つ）の凹状部６ｂが均等配置されたアウターケース６の外周形状に対応して、周方向の複数箇所（この実施形態では３箇所）において内方に湾曲面状に張り出した非円形状をなしている。  As shown in FIG. 2, the outer diameter of the large-diameter-side mounting portion 14 has a circular shape. On the other hand, the inner peripheral shape has a plurality (three in this embodiment) of concave portions 6 b in the circumferential direction. Corresponding to the outer peripheral shape of the outer case 6 arranged uniformly, a non-circular shape projecting inwardly into a curved surface is formed at a plurality of locations in the circumferential direction (three locations in this embodiment).

詳細には、大径側取付部１４は、アウターケース６の円弧状の外周面に配される３つの円弧状壁部２２，２２，２２と、アウターケース６の凹状部６ｂに嵌合される３つの張り出し壁部２４，２４，２４とを備え、これらが周方向に交互に配されてなる。円弧状壁部２２は、上記中心線Ｌを軸とする共通の円筒面内において周方向に等間隔に配されており、周方向に略一定の肉厚を持っている。張り出し壁部２４は、隣接する円弧状壁部２２，２２間に介在してそこから半径方向内方に湾曲状に張り出し形成されており、周方向に略一定の肉厚を持ち、かつ、円弧状壁部２２と略同じ肉厚を持っている。  Specifically, the large-diameter side attachment portion 14 is fitted into the three arc-shaped wall portions 22, 22, 22 disposed on the arc-shaped outer peripheral surface of the outer case 6 and the concave portion 6 b of the outer case 6. Three projecting wall portions 24, 24, 24 are provided, and these are alternately arranged in the circumferential direction. The arc-shaped wall portions 22 are arranged at equal intervals in the circumferential direction within a common cylindrical surface with the center line L as an axis, and have a substantially constant thickness in the circumferential direction. The overhanging wall portion 24 is formed between the adjacent arcuate wall portions 22 and 22 so as to protrude radially inwardly therefrom, has a substantially constant thickness in the circumferential direction, and has a circular shape. It has substantially the same thickness as the arcuate wall portion 22.

大径側取付部１４の内周面には周方向の全体にわたって延びるシール用凸条２６が設けられている。シール用凸条２６は、軸方向に間隔をおいて複数本（この実施形態では２本）が互いに平行に設けられている。  On the inner peripheral surface of the large-diameter side mounting portion 14, a sealing protrusion 26 extending over the entire circumferential direction is provided. A plurality of sealing ridges 26 (two in this embodiment) are provided in parallel with each other at intervals in the axial direction.

円弧状壁部２２の外側面には、軸方向に間隔をおいて配された周方向に延びる２本の互いに平行な凸条２８，２８が設けられており、その間がリング状の締付部材７を受け入れるための周方向に延びる固定用凹部２０となっている。  The outer surface of the arc-shaped wall portion 22 is provided with two circumferentially extending ridges 28, 28 that are spaced apart in the axial direction and extend in the circumferential direction, and a ring-shaped fastening member therebetween. 7 is a fixing recess 20 extending in the circumferential direction for receiving 7.

張り出し壁部２４の外側面には、当該張り出し壁部を締付部材７に対して支持するための支持壁部３０が設けられている。支持壁部３０は、図３〜５に示すように、大径側取付部１４の周方向Ｃに対して所定の角度αをなして傾斜して延びる第１支持壁部３２と、該周方向Ｃに関して第１支持壁部３２とは反対側に所定の角度βをなして傾斜して延びる第２支持壁部３４とで構成されている。第１支持壁部３２と第２支持壁部３４とはＸ字状に交差しており、これにより互いに補強し合っている。ここで、上記角度α，βは、補強効果の観点より、１５°〜６０°であることが好ましく、より好ましくは１５°〜４５°の範囲内で設定される。角度αとβは、本実施形態では同じ値に設定されている。  A support wall portion 30 for supporting the overhanging wall portion with respect to the fastening member 7 is provided on the outer surface of the overhanging wall portion 24. As shown in FIGS. 3 to 5, the support wall portion 30 includes a first support wall portion 32 that extends at a predetermined angle α with respect to the circumferential direction C of the large-diameter side attachment portion 14, and the circumferential direction. The second support wall portion 34 extends incline at a predetermined angle β on the side opposite to the first support wall portion 32 with respect to C. The first support wall portion 32 and the second support wall portion 34 intersect in an X shape, thereby reinforcing each other. Here, from the viewpoint of the reinforcing effect, the angles α and β are preferably 15 ° to 60 °, and more preferably set within a range of 15 ° to 45 °. The angles α and β are set to the same value in this embodiment.

第１支持壁部３２と第２支持壁部３４は、それぞれ、互いに平行に、かつ等間隔にて複数設けられており、本実施形態ではそれぞれ３つずつ設けられている。そして、３つの第１支持壁部のうち中央の第１支持壁部３２ａは、張り出し壁部２４における周方向の一端から他端にかけて対角線状に延びており、この中央の第１支持壁部３２ａは３つの第２支持壁部３４の全てと交差している。また、３つの第２支持壁部のうち中央の第２支持壁部３４ａは、張り出し部２４における周方向の一端から他端にかけて対角線状に延びており、この中央の第２支持壁部３４ａは３つの第１支持壁部３２の全てと交差している。すなわち、３つの第１支持壁部３２は中央の第２支持壁部３４ａにより相互に連結され、また、３つの第２支持壁部３４は中央の第１支持壁部３２ａにより相互に連結されている。そして、これにより、支持壁部３０は図４に示す斜め格子状に形成されている。また、このようにして張り出し壁部２４の外側面に第１支持壁部３２と第２支持壁部３４を設けたことにより、大径側取付部１４における径方向内方への張り出し部には側方（軸直角方向外方）からの肉盗み凹部３６が複数設けられている。  A plurality of the first support wall portions 32 and the second support wall portions 34 are provided in parallel with each other and at equal intervals. In the present embodiment, three each are provided. Of the three first support wall portions, the center first support wall portion 32a extends diagonally from one end to the other end in the circumferential direction of the overhanging wall portion 24, and the center first support wall portion 32a. Intersects with all three second support walls 34. Of the three second support wall portions, the center second support wall portion 34a extends diagonally from one end to the other end in the circumferential direction of the overhang portion 24, and the second support wall portion 34a at the center is It intersects with all of the three first support wall portions 32. That is, the three first support wall portions 32 are connected to each other by the center second support wall portion 34a, and the three second support wall portions 34 are connected to each other by the center first support wall portion 32a. Yes. And thereby, the support wall part 30 is formed in the diagonal grid | lattice form shown in FIG. Further, by providing the first support wall portion 32 and the second support wall portion 34 on the outer surface of the overhanging wall portion 24 in this way, the overhanging portion in the radially inward direction of the large-diameter side attachment portion 14 is provided. A plurality of meat stealing recesses 36 from the side (outward in the direction perpendicular to the axis) are provided.

図３に示すように、第１支持壁部３２と第２支持壁部３４は、締付部材７を受ける各外縁３２ｏ，３４ｏが円弧状壁部２２と共通の円筒面に沿って形成されている。すなわち、第１支持壁部３２の外縁３２ｏと第２支持壁部３４の外縁３４ｏは、ともに、円弧状壁部２２における固定用凹部２０の外周面と共通の円筒面を形成する断面円弧状の輪郭形状をなしており、これにより、締付部材７による安定した締め付け性が確保されている。  As shown in FIG. 3, the first support wall portion 32 and the second support wall portion 34 have outer edges 32 o and 34 o that receive the fastening member 7 formed along a cylindrical surface common to the arc-shaped wall portion 22. Yes. That is, the outer edge 32o of the first support wall portion 32 and the outer edge 34o of the second support wall portion 34 are both arc-shaped in cross section forming a common cylindrical surface with the outer peripheral surface of the fixing recess 20 in the arc-shaped wall portion 22. It has an outline shape, and thereby, a stable tightening property by the tightening member 7 is ensured.

なお、張り出し壁部２４の外側面には、上記支持壁部３０の軸方向の両側にそれぞれ縦壁部３８，４０が設けられている。縦壁部３８，４０は支持壁部３０と同じ外縁形状を持って周方向に延びる壁部であり、本実施形態では、支持壁部３０、即ち第１支持壁部３２と第２支持壁部３４が、これら縦壁部３８，４０に接続されて補強されている。なお、上記縦壁部３８，４０は、締付部材７により締め付けられる領域ではないため、省略してもよい。  In addition, on the outer side surface of the overhanging wall portion 24, vertical wall portions 38 and 40 are provided on both sides in the axial direction of the support wall portion 30, respectively. The vertical wall portions 38, 40 are wall portions having the same outer edge shape as the support wall portion 30 and extending in the circumferential direction. In the present embodiment, the support wall portion 30, that is, the first support wall portion 32 and the second support wall portion. 34 is connected to the vertical wall portions 38 and 40 and is reinforced. In addition, since the said vertical wall parts 38 and 40 are not the area | regions clamped by the clamping member 7, you may abbreviate | omit.

以上よりなる本実施形態の樹脂製ジョイントブーツ１０であると、大径側取付部１４における内方への張り出し部を肉盗み形状としたので、該張り出し部を中実な厚肉部で形成する場合に比べて、成形後の収縮に起因するヒケの発生を防止することができ、また、厚肉部と薄肉部との締付力の不均一も軽減することができる。  In the case of the resin joint boot 10 of the present embodiment configured as described above, since the inwardly projecting portion of the large-diameter side mounting portion 14 has a stealing shape, the projecting portion is formed as a solid thick portion. Compared to the case, it is possible to prevent the occurrence of sink marks due to shrinkage after molding, and it is possible to reduce uneven tightening force between the thick part and the thin part.

また、張り出し壁部２４の外側面を支持する支持壁部３０を、周方向Ｃに対して互いに反対側に傾斜して延び、かつ交差する第１支持壁部３２と第２支持壁部３４とで構成したので、締付部材７による締め付け時に作用する周方向の力に対して第１支持壁部３２と第２支持壁部３４とが相互に補強効果を発揮する。そのため、これらの支持壁部３２，３４が大径側取付部１４の周方向Ｃにも軸方向にも倒れにくくなり、シール性を一層向上することができる。更に、互いに平行な複数の支持壁部３２，３４をこれと反対側に傾斜する中央の支持壁部３２ａ，３４ａで相互に連結するようにして支持壁部３０を斜め格子状に形成したことから、補強効果が高まり、よって、締め付け時における支持壁部３０の倒れをより確実に防止することができる。  Further, a support wall portion 30 that supports the outer surface of the overhanging wall portion 24 extends while being inclined in opposite directions with respect to the circumferential direction C, and intersects with the first support wall portion 32 and the second support wall portion 34. Therefore, the first support wall portion 32 and the second support wall portion 34 exert a reinforcing effect on the circumferential force acting when tightened by the tightening member 7. Therefore, these support wall portions 32 and 34 are less likely to fall in the circumferential direction C and the axial direction of the large-diameter side attachment portion 14, and the sealing performance can be further improved. Further, since the plurality of support wall portions 32 and 34 parallel to each other are connected to each other by the central support wall portions 32a and 34a inclined to the opposite side, the support wall portion 30 is formed in an oblique lattice shape. As a result, the reinforcing effect is enhanced, and thus the falling of the support wall portion 30 at the time of tightening can be prevented more reliably.

本発明のジョイントブーツは、高いシール性を確保することができるので、主として自動車のトリポートタイプの等速ジョイントなどに用いられるジョイントブーツとして好適に利用することができる。  Since the joint boot of the present invention can ensure high sealing performance, it can be suitably used as a joint boot mainly used for a triport type constant velocity joint of an automobile.

本発明の一実施形態に係る樹脂製ジョイントブーツの半断面半側面図である。It is a half section half side view of the resin joint boot concerning one embodiment of the present invention. 同ジョイントブーツを大径側取付部側から見た正面図である。It is the front view which looked at the joint boot from the large diameter side attaching part side. 同ジョイントブーツの大径側取付部の要部拡大斜視図である。It is a principal part expansion perspective view of the large diameter side attaching part of the joint boot. 図２のIV方向から見た要部拡大図である。It is the principal part enlarged view seen from the IV direction of FIG. 図４のＶ−Ｖ線断面図である。It is the VV sectional view taken on the line of FIG. 従来の樹脂製ジョイントブーツを取り付けたトリポートタイプの等速ジョイントを示す断面図である。It is sectional drawing which shows the triport type constant velocity joint which attached the conventional resin joint boot. 同等速ジョイントの側面図である。It is a side view of an equivalent speed joint.

符号の説明Explanation of symbols

１０…樹脂製ジョイントブーツ、１２…小径側取付部、１４…大径側取付部、１６…蛇腹部、２２…円弧状壁部、２４…張り出し壁部、３２…第１支持壁部、３２ｏ…第１支持壁部の外縁、３４…第２支持壁部、３４ｏ…第２支持壁部の外縁DESCRIPTION OF SYMBOLS 10 ... Resin joint boot, 12 ... Small diameter side attaching part, 14 ... Large diameter side attaching part, 16 ... Bellows part, 22 ... Arc-shaped wall part, 24 ... Overhanging wall part, 32 ... 1st support wall part, 32o ... The outer edge of the first support wall, 34 ... the second support wall, 34o ... the outer edge of the second support wall

Claims (2)

周方向に複数の凹状部を有する外周形状のアウターケースに締付部材を用いて外嵌固定される大径側取付部と、シャフトに取り付けられる小径側取付部と、両者を一体に連結する蛇腹部とを備えるジョイントブーツであって、
前記大径側取付部は、共通の円筒面内において周方向に間隔をおいて配された複数の円弧状壁部と、該円筒状壁部間において径方向内方に湾曲状に張り出し形成された張り出し壁部とを備えてなり、前記張り出し壁部の外側面に当該外側面を支持する第１支持壁部と第２支持壁部が設けられ、前記第１支持壁部と第２支持壁部は、前記大径側取付部の周方向に関して反対側に傾斜して延び、かつ、交差しており、
前記第１支持壁部が互いに平行に複数設けられ、前記第２支持壁部が互いに平行に複数設けられ、少なくとも１の前記第１支持壁部が２以上の前記第２支持壁部と交差し、少なくとも１の前記第２支持壁部が２以上の前記第１支持壁部と交差していることを特徴とするジョイントブーツ。A large-diameter side mounting portion that is externally fixed to the outer case having a plurality of concave portions in the circumferential direction by using a fastening member, a small-diameter side mounting portion that is attached to the shaft, and a bellows that integrally couples the two. A joint boot comprising a portion,
The large-diameter side mounting portion is formed with a plurality of arc-shaped wall portions arranged at intervals in the circumferential direction in a common cylindrical surface, and is projected in a curved shape radially inward between the cylindrical wall portions. A first support wall portion and a second support wall portion for supporting the outer surface on the outer surface of the projecting wall portion, and the first support wall portion and the second support wall. The portion extends inclining to the opposite side with respect to the circumferential direction of the large-diameter side mounting portion, and intersects .
A plurality of the first support wall portions are provided in parallel with each other, a plurality of the second support wall portions are provided in parallel with each other, and at least one of the first support wall portions intersects with two or more of the second support wall portions. A joint boot characterized in that at least one of the second support wall portions intersects with two or more of the first support wall portions . 前記第１支持壁部及び前記第２支持壁部の外縁が前記円弧状壁部と共通の円筒面に沿って形成されていることを特徴とする請求項１記載のジョイントブーツ。  The joint boot according to claim 1, wherein outer edges of the first support wall portion and the second support wall portion are formed along a cylindrical surface common to the arcuate wall portion.
JP2005512253A 2004-10-14 2004-10-14 Joint boots Expired - Fee Related JP4131974B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2004/015152 WO2006040821A1 (en) 2004-10-14 2004-10-14 Joint boot

Publications (2)

Publication Number Publication Date
JPWO2006040821A1 JPWO2006040821A1 (en) 2008-05-15
JP4131974B2 true JP4131974B2 (en) 2008-08-13

Family

ID=36148123

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005512253A Expired - Fee Related JP4131974B2 (en) 2004-10-14 2004-10-14 Joint boots

Country Status (2)

Country Link
JP (1) JP4131974B2 (en)
WO (1) WO2006040821A1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2838487B1 (en) * 2002-04-10 2004-11-19 Gkn Glaenzer Spicer SEALING BELLOWS AND CORRESPONDING TRANSMISSION JOINT
JP2003329057A (en) * 2002-05-14 2003-11-19 Toyo Tire & Rubber Co Ltd Joint boot made of resin
DE10262037B4 (en) * 2002-07-26 2005-03-10 Freudenberg Carl Kg Boot

Also Published As

Publication number Publication date
WO2006040821A1 (en) 2006-04-20
JPWO2006040821A1 (en) 2008-05-15

Similar Documents

Publication Publication Date Title
GB2295438A (en) Boot attachment structure for a rotary joint
US6464233B1 (en) Bellows-type cover member
PT809034E (en) PROTECTION OF TYPE OF FOLE WITH INTEGRATED FIXING ELEMENT
JP2000291675A (en) Assembly of constant velocity joint and receiving member
JP4131974B2 (en) Joint boots
JP3956015B2 (en) Resin joint boots
JP4893362B2 (en) Power transmission shaft
JP2003329057A (en) Joint boot made of resin
JP4012186B2 (en) Joint boots
JP4157105B2 (en) Joint boots
JP4012187B2 (en) Joint boots
US7585227B2 (en) Joint boot
JP4167262B2 (en) Joint boots
JP4041115B2 (en) Joint boots
JP2008002552A (en) Dynamic damper
JPH0590055U (en) boots
JP3491058B2 (en) Bearing seal with axial lip
JP2004169726A (en) Boot for constant velocity joint, and mounting device
JPH0710562U (en) Boot mounting structure for constant velocity universal joint
JP2004211850A (en) Bush for resin boot
JP2555345Y2 (en) Hose connection structure
JP2589620Y2 (en) Resin nut holding structure
JPH0447382Y2 (en)
JP4121054B2 (en) Stretchable shaft coupling structure
JP2004060770A (en) Joint

Legal Events

Date Code Title Description
TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20080527

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20080529

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110606

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Ref document number: 4131974

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140606

Year of fee payment: 6

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

S533 Written request for registration of change of name

Free format text: JAPANESE INTERMEDIATE CODE: R313533

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees