JP2020168645A - Electrical resistance press-fit joint structure - Google Patents

Abstract

To prevent that burr extending from a joint part in association with progress of press-fit of the joint part is sandwiched between contact parts of a first component and a second component while reducing a space occupied by the whole first component and second component when the contact parts provided on the first component and the second component respectively contact each other by press-fit of the joint part to close a burr storage space part.SOLUTION: A deflection part (projection 81) is formed on an inner wall surface of a burr storage space part 91. The deflection part so deflects an extension direction of burr 95, which extends from a joint part 70a, 71a in association with progress of press-fit of the joint part 70a, 71a, as not to be oriented toward contact parts 70g, 71f of a first component (first cylindrical member 70) and a second component (second cylindrical member 71).SELECTED DRAWING: Figure 4

Description

本発明は、電気抵抗圧入接合構造に関する技術分野に属する。 The present invention belongs to the technical field relating to the electric resistance press-fitting joint structure.

従来より、第１部材と第２部材とを接合する場合に、大きな接合強度を得るために、第１部材の孔部内に第２部材を圧入するとともに、これら両部材間に通電することで、第１部材と第２部材とを電気抵抗接合することが知られている（例えば、特許文献１参照）。 Conventionally, when joining the first member and the second member, in order to obtain a large joining strength, the second member is press-fitted into the hole of the first member, and electricity is applied between the two members. It is known that the first member and the second member are electrically resistance-bonded (see, for example, Patent Document 1).

このように接合された電気抵抗圧入接合構造においては、第１部材及び第２部材における互いに圧入されかつ電気抵抗接合された接合部から延出したバリが生じる可能性が高い。そこで、特許文献１では、第１部材又は第２部材の一部の切欠き或いは凹ましにより、上記バリを収容するバリ収容空間部を形成するようにしている。 In the electric resistance press-fitting joint structure joined in this way, there is a high possibility that burrs will be generated from the joint portion of the first member and the second member that are press-fitted into each other and are electrically resistance-bonded. Therefore, in Patent Document 1, a burr accommodating space portion for accommodating the burr is formed by a notch or a recess in a part of the first member or the second member.

特開２００５−０１４０６４号公報Japanese Unexamined Patent Publication No. 2005-014064

ところが、上記特許文献１のようなバリ収容空間部は、一部が開放される場合があり、この場合、バリが剥がれると、そのバリがバリ収容空間部の外側に出てしまう可能性がある。 However, a part of the burr accommodating space portion as in Patent Document 1 may be opened. In this case, if the burr is peeled off, the burr may come out to the outside of the burr accommodating space portion. ..

そこで、バリ収容空間部を、第１部材及び第２部材にそれぞれ設けられた当接部が、接合部の圧入により互いに当接することによって閉じられるように構成することが好ましい。これにより、簡単な構成でバリ収容空間部を閉じることができる。 Therefore, it is preferable that the burr accommodating space portion is configured so that the contact portions provided on the first member and the second member are closed by abutting each other by press-fitting the joint portion. As a result, the burr accommodating space can be closed with a simple configuration.

しかしながら、そのような構成では、接合部の圧入の進行に伴って接合部から延出するバリが、第１部材及び第２部材の当接部が互いに当接する前に該当接部の間にまで達して、該当接部の当接によりバリが該当接部の間に挟まる可能性がある。特に、接合部から延出するバリの長さがバリ収容空間部の長さ（バリ収容空間部の接合部圧入方向の長さ）よりも長い場合に、バリが第１部材及び第２部材の当接部の間に挟まる可能性が高くなる。このようにバリが当接部の間に挟まると、その挟まれたバリがちぎれてバリ収容空間部の外側に出る可能性があるとともに、そのバリの分だけ、第１部材と第２部材との位置関係が変化することになる。 However, in such a configuration, burrs extending from the joint as the press-fitting of the joint progresses extend between the contact portions before the contact portions of the first member and the second member come into contact with each other. When it reaches, there is a possibility that burrs will be caught between the relevant contact parts due to the contact of the relevant contact parts. In particular, when the length of the burr extending from the joint portion is longer than the length of the burr accommodating space portion (the length of the burr accommodating space portion in the joint portion press-fitting direction), the burr is formed on the first member and the second member. There is a high possibility that it will be caught between the contact parts. When burrs are caught between the abutting portions in this way, the sandwiched burrs may be torn off and come out to the outside of the burr accommodating space, and the amount of the burrs is increased between the first member and the second member. The positional relationship of will change.

そこで、バリ収容空間部の長さを長くすれば、バリが当接部の間に挟まれ難くなるが、そのようにすると、第１部材及び第２部材全体が占めるスペースが大きくなってしまうという問題がある。 Therefore, if the length of the burr accommodating space portion is increased, it becomes difficult for the burr to be sandwiched between the abutting portions, but if this is done, the space occupied by the entire first member and the second member becomes large. There's a problem.

本発明は、斯かる点に鑑みてなされたものであり、その目的とするところは、第１部材及び第２部材にそれぞれ設けられた当接部が、接合部の圧入により互いに当接することによってバリ収容空間部を閉じる場合に、第１部材及び第２部材全体が占めるスペースを小さくしつつ、接合部の圧入の進行に伴って接合部から延出するバリが、第１部材及び第２部材の当接部の間に挟まれるのを防止しようとすることにある。 The present invention has been made in view of these points, and an object of the present invention is that the contact portions provided on the first member and the second member each come into contact with each other by press-fitting the joints. When the burr accommodating space is closed, the space occupied by the entire first member and the second member is reduced, and the burrs extending from the joint as the press-fitting of the joint progresses are formed by the first member and the second member. The purpose is to prevent it from being pinched between the contact portions of the above.

上記の目的を達成するために、本発明では、互いに圧入されかつ電気抵抗接合された接合部がそれぞれ設けられた第１部材及び第２部材を備えた電気抵抗圧入接合構造を対象として、上記第１部材及び上記第２部材の間における上記接合部の近傍に、該接合部から延出したバリを収容するバリ収容空間部が設けられ、上記バリ収容空間部は、上記第１部材及び上記第２部材にそれぞれ設けられた当接部が、上記接合部の圧入により互いに当接することによって閉じられるように構成されており、上記バリ収容空間部の内壁面に、上記接合部の圧入の進行に伴って該接合部から延出する上記バリの延出方向を、上記第１部材及び上記第２部材の当接部に向かわないように偏向する偏向部が形成されている、という構成とした。 In order to achieve the above object, the present invention targets an electric resistance press-fitting joint structure including a first member and a second member each having joints press-fitted and electrically resistance-bonded to each other. A burr accommodating space portion for accommodating burrs extending from the joint portion is provided in the vicinity of the joint portion between the first member and the second member, and the burr accommodating space portion is the first member and the first member. The contact portions provided on each of the two members are configured to be closed by abutting against each other by press-fitting the joint portion, and the joint portion is press-fitted into the inner wall surface of the burr accommodating space portion. Along with this, a deflection portion is formed that deflects the extension direction of the burr extending from the joint portion so as not to face the contact portion of the first member and the second member.

上記の構成により、バリ収容空間部の内壁面に設けられた偏向部により、バリの延出方向が第１部材及び第２部材の当接部に向かわないように偏向されるので、バリ収容空間部の長さが短くても、バリが第１部材及び第２部材の当接部の間に挟まれるのを防止することができる。 With the above configuration, the deflection portion provided on the inner wall surface of the burr accommodating space portion deflects the burr extension direction so as not to face the contact portion of the first member and the second member. Even if the length of the portion is short, it is possible to prevent the burr from being sandwiched between the abutting portions of the first member and the second member.

上記電気抵抗圧入接合構造の一実施形態では、上記偏向部は、上記バリ収容空間部の内壁面に対して突出した突起部で構成されている。 In one embodiment of the electric resistance press-fitting joint structure, the deflection portion is composed of a protrusion protruding with respect to the inner wall surface of the burr accommodating space portion.

上記電気抵抗圧入接合構造の別の実施形態では、上記偏向部は、上記バリ収容空間部の内壁面に対して凹む凹部で構成されている。 In another embodiment of the electric resistance press-fitting joint structure, the deflection portion is composed of a recess recessed with respect to the inner wall surface of the burr accommodating space portion.

上記電気抵抗圧入接合構造の更に別の実施形態では、上記偏向部は、上記バリ収容空間部の内壁面に対して突出した突起部と、該内壁面に対して凹む凹部とで構成されている。 In still another embodiment of the electric resistance press-fitting joint structure, the deflection portion is composed of a protrusion protruding with respect to the inner wall surface of the burr accommodating space portion and a concave portion recessed with respect to the inner wall surface. ..

これらの構成により、バリ収容空間部の内壁面に偏向部を容易に設けることができるとともに、バリの延出方向を、第１部材及び第２部材の当接部に向かわないように適切にかつ容易に偏向することができる。 With these configurations, a deflection portion can be easily provided on the inner wall surface of the burr accommodating space portion, and the burr extending direction is appropriately and appropriately so as not to face the contact portion of the first member and the second member. It can be easily deflected.

以上説明したように、本発明の電気抵抗圧入接合構造によると、バリ収容空間部の内壁面に、接合部の圧入の進行に伴って該接合部から延出するバリの延出方向を、第１部材及び第２部材の当接部に向かわないように偏向する偏向部が形成されていることにより、第１部材及び第２部材全体が占めるスペースを小さくしつつ、バリが第１部材及び第２部材の当接部の間に挟まれるのを防止することができる。したがって、その挟まれたバリがちぎれてバリ収容空間部の外側に出ることはなく、また、第１部材と第２部材との位置関係を正確な位置関係に維持することができる。 As described above, according to the electric resistance press-fitting joint structure of the present invention, the extension direction of burrs extending from the joint portion as the press-fitting of the joint portion progresses is set on the inner wall surface of the burr accommodating space portion. By forming a deflecting portion that deflects so as not to face the contact portion of the first member and the second member, the space occupied by the entire first member and the second member is reduced, and burrs are formed on the first member and the first member. It is possible to prevent the two members from being pinched between the contact portions. Therefore, the sandwiched burrs are not torn off and do not go out of the burr accommodating space, and the positional relationship between the first member and the second member can be maintained in an accurate positional relationship.

本発明の実施形態に係る電気抵抗圧入接合構造が適用されたクラッチドラムを有するクラッチ装置を備えた自動変速機を示す骨子図である。It is a skeleton diagram which shows the automatic transmission provided with the clutch device which has the clutch drum to which the electric resistance press-fitting joint structure which concerns on embodiment of this invention are applied. 上記自動変速機の各変速段時における摩擦締結要素の締結状態を示す締結表である。It is a fastening table which shows the fastening state of the friction fastening element at each shift stage of the automatic transmission. 上記クラッチドラムを具体的に示す断面図である。It is sectional drawing which shows the said clutch drum concretely. 第２プラネタリギヤセットの第２リングギヤに連結されるクラッチドラムにおける第１筒状部材及び第２筒状部材の接合部の近傍を拡大して示す断面図である。It is sectional drawing which enlarges and shows the vicinity of the joint part of the 1st tubular member and the 2nd tubular member in the clutch drum connected to the 2nd ring gear of the 2nd planetary gear set. 図４のクラッチドラムにおける第１筒状部材と第２筒状部材との電気抵抗圧入接合方法を示す、第１筒状部材及び第２筒状部材の接合予定部の近傍の拡大断面図である。FIG. 5 is an enlarged cross-sectional view of the vicinity of a planned joining portion of the first tubular member and the second tubular member, showing an electric resistance press-fitting joining method between the first tubular member and the second tubular member in the clutch drum of FIG. .. 偏向部の変形例を示す図４相当図である。It is a figure corresponding to FIG. 4 which shows the deformation example of the deflection part. 偏向部の別の変形例を示す図４相当図である。It is a figure corresponding to FIG. 4 which shows another modification of the deflection part.

以下、本発明の実施形態を図面に基づいて詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

図１は、本発明の実施形態に係る電気抵抗圧入接合構造が適用されたクラッチドラムを有するクラッチ装置を備えた自動変速機１０を一例として示す。この自動変速機１０は、ＦＲ式の車両に搭載される縦置き式の自動変速機である。 FIG. 1 shows, as an example, an automatic transmission 10 provided with a clutch device having a clutch drum to which the electric resistance press-fitting joint structure according to the embodiment of the present invention is applied. The automatic transmission 10 is a vertical type automatic transmission mounted on an FR type vehicle.

自動変速機１０は、変速機ケース１１と、該変速機ケース１１内に挿入されかつ上記車両の駆動源（エンジン、モータ等）からの動力が入力される入力軸１２と、変速機ケース１１内に収容されかつ入力軸１２を介して上記駆動源からの動力が伝達される変速機構１４と、変速機ケース１１内に挿入されかつ変速機構１４からの動力をプロペラシャフトに出力する出力軸１３とを有している。 The automatic transmission 10 includes a transmission case 11, an input shaft 12 inserted into the transmission case 11 and to which power from a drive source (engine, motor, etc.) of the vehicle is input, and inside the transmission case 11. A transmission mechanism 14 accommodated in the transmission and transmitting power from the drive source via the input shaft 12, and an output shaft 13 inserted in the transmission case 11 and outputting power from the transmission mechanism 14 to the propeller shaft. have.

入力軸１２と出力軸１３とは、車両前後方向に沿って同軸に配置されており、自動変速機１０が上記車両に搭載された状態で、入力軸１２が車両前側に位置しかつ出力軸１３が車両後側に位置している。以下の説明では、入力軸１２の軸方向（出力軸１３の軸方向）における上記駆動源側（図１の左側）を前側といい、入力軸１２の軸方向における上記駆動源とは反対側（図１の右側）を後側という。 The input shaft 12 and the output shaft 13 are coaxially arranged along the vehicle front-rear direction, and the input shaft 12 is located on the front side of the vehicle and the output shaft 13 is mounted on the vehicle with the automatic transmission 10 mounted on the vehicle. Is located on the rear side of the vehicle. In the following description, the drive source side (left side in FIG. 1) in the axial direction of the input shaft 12 (axial direction of the output shaft 13) is referred to as a front side, and the side opposite to the drive source in the axial direction of the input shaft 12 ( The right side of FIG. 1) is called the rear side.

変速機構１４は、入力軸１２の軸方向に並ぶ、第１プラネタリギヤセットＰＧ１（以下、第１ギヤセットＰＧ１という）、第２プラネタリギヤセットＰＧ２（以下、第２ギヤセットＰＧ２という）、第３プラネタリギヤセットＰＧ３（以下、第３ギヤセットＰＧ３という）、及び、第４プラネタリギヤセットＰＧ４（以下、第４ギヤセットＰＧ４という）を有している。これら第１ギヤセットＰＧ１、第２ギヤセットＰＧ２、第３ギヤセットＰＧ３及び第４ギヤセットＰＧ４は、前側からこの順に並んでいて、入力軸１２から出力軸１３への複数の動力伝達経路を形成する。第１〜第４ギヤセットＰＧ１〜ＰＧ４は、入力軸１２及び出力軸１３と同軸に配置されている。 The transmission mechanism 14 has a first planetary gear set PG1 (hereinafter referred to as a first gear set PG1), a second planetary gear set PG2 (hereinafter referred to as a second gear set PG2), and a third planetary gear set PG3 (hereinafter referred to as a first gear set PG1) arranged in the axial direction of the input shaft 12. Hereinafter, it has a third gear set PG3) and a fourth planetary gear set PG4 (hereinafter referred to as a fourth gear set PG4). The first gear set PG1, the second gear set PG2, the third gear set PG3, and the fourth gear set PG4 are arranged in this order from the front side to form a plurality of power transmission paths from the input shaft 12 to the output shaft 13. The first to fourth gear sets PG1 to PG4 are arranged coaxially with the input shaft 12 and the output shaft 13.

第１ギヤセットＰＧ１は、回転要素として、第１サンギヤＳ１、第１リングギヤＲ１及び第１キャリヤＣ１を有する。第１ギヤセットＰＧ１は、シングルピニオン型であって、第１キャリヤＣ１に支持されかつ第１ギヤセットＰＧ１の周方向に互いに間隔をあけて配置された複数のピニオンＰ１が第１サンギヤＳ１及び第１リングギヤＲ１の両方に噛み合わされている。 The first gear set PG1 has a first sun gear S1, a first ring gear R1 and a first carrier C1 as rotating elements. The first gear set PG1 is a single pinion type, and a plurality of pinions P1 supported by the first carrier C1 and arranged at intervals in the circumferential direction of the first gear set PG1 are the first sun gear S1 and the first ring gear. It is meshed with both R1.

第２ギヤセットＰＧ２は、回転要素として、第２サンギヤＳ２、第２リングギヤＲ２及び第２キャリヤＣ２を有する。第２ギヤセットＰＧ２も、シングルピニオン型であって、第２キャリヤＣ２に支持されかつ第２ギヤセットＰＧ２の周方向に互いに間隔をあけて配置された複数のピニオンＰ２が第２サンギヤＳ２及び第２リングギヤＲ２の両方に噛み合わされている。 The second gear set PG2 has a second sun gear S2, a second ring gear R2, and a second carrier C2 as rotating elements. The second gear set PG2 is also a single pinion type, and a plurality of pinions P2 supported by the second carrier C2 and arranged at intervals in the circumferential direction of the second gear set PG2 are the second sun gear S2 and the second ring gear. It is meshed with both R2.

第３ギヤセットＰＧ３は、回転要素として、第３サンギヤＳ３、第３リングギヤＲ３及び第３キャリヤＣ３を有する。第３ギヤセットＰＧ３も、シングルピニオン型であって、第３キャリヤＣ３に支持されかつ第３ギヤセットＰＧ３の周方向に互いに間隔をあけて配置された複数のピニオンＰ３が第３サンギヤＳ３及び第３リングギヤＲ３の両方に噛み合わされている。 The third gear set PG3 has a third sun gear S3, a third ring gear R3, and a third carrier C3 as rotating elements. The third gear set PG3 is also a single pinion type, and a plurality of pinions P3 supported by the third carrier C3 and arranged at intervals in the circumferential direction of the third gear set PG3 are the third sun gear S3 and the third ring gear. It is meshed with both R3.

第４ギヤセットＰＧ４は、回転要素として、第４サンギヤＳ４、第４リングギヤＲ４及び第４キャリヤＣ４を有する。第４ギヤセットＰＧ４も、シングルピニオン型であって、第４キャリヤＣ４に支持されかつ第４ギヤセットＰＧ４の周方向に互いに間隔をあけて配置された複数のピニオンＰ４が第４サンギヤＳ４及び第４リングギヤＲ４の両方に噛み合わされている。 The fourth gear set PG4 has a fourth sun gear S4, a fourth ring gear R4, and a fourth carrier C4 as rotating elements. The fourth gear set PG4 is also a single pinion type, and a plurality of pinions P4 supported by the fourth carrier C4 and arranged at intervals in the circumferential direction of the fourth gear set PG4 are the fourth sun gear S4 and the fourth ring gear. It is meshed with both R4.

第１ギヤセットＰＧ１の第１サンギヤＳ１は、入力軸１２の軸方向に２分割されており、相対的に前側に配置された前側第１サンギヤＳ１ａと相対的に後側に配置された後側第１サンギヤＳ１ｂとを有している。つまり、第１ギヤセットＰＧ１は、ダブルサンギヤ型のギヤセットである。前側及び後側第１サンギヤＳ１ａ，Ｓ１ｂは、同じ歯数の歯を有して、第１キャリヤＣ１に支持されたピニオンＰ１に噛合しているため、これら前側及び後側第１サンギヤＳ１ａ，Ｓ１ｂの回転数は常に等しくなる。すなわち、前側及び後側第１サンギヤＳ１ａ，Ｓ１ｂは、常に同じ回転速度で回転し、一方のギヤの回転が停止しているときには他方のギヤの回転も停止する。 The first sun gear S1 of the first gear set PG1 is divided into two in the axial direction of the input shaft 12, and is arranged on the rear side relative to the front side first sun gear S1a arranged on the relatively front side. It has one sun gear S1b. That is, the first gear set PG1 is a double sun gear type gear set. Since the front and rear first sun gears S1a and S1b have the same number of teeth and mesh with the pinion P1 supported by the first carrier C1, these front and rear first sun gears S1a and S1b The number of revolutions of is always equal. That is, the front and rear first sun gears S1a and S1b always rotate at the same rotation speed, and when the rotation of one gear is stopped, the rotation of the other gear is also stopped.

第１サンギヤＳ１（厳密には、後側第１サンギヤＳ１ｂ）と第４サンギヤＳ４とが常時連結され、第１リングギヤＲ１と第２サンギヤＳ２とが常時連結され、第２キャリヤＣ２と第４キャリヤＣ４とが常時転結され、第３キャリヤＣ３と第４リングギヤＲ４とが常時連結されている。また、入力軸１２は第１キャリヤＣ１に常時連結され、出力軸１３は第４キャリヤＣ４に常時連結されている。具体的には、入力軸１２は、前側及び後側第１サンギヤＳ１ａ，Ｓ１ｂの間を通る動力伝達部材１８を介して第１キャリヤＣ１と連結されている。後側第１サンギヤＳ１ｂと第４サンギヤＳ４とは、動力伝達軸１５を介して連結されている。第２キャリヤＣ２と第４キャリヤＣ４とは、動力伝達部材１６を介して連結されている。 The first sun gear S1 (strictly speaking, the rear first sun gear S1b) and the fourth sun gear S4 are always connected, the first ring gear R1 and the second sun gear S2 are always connected, and the second carrier C2 and the fourth carrier are always connected. C4 is always connected, and the third carrier C3 and the fourth ring gear R4 are always connected. Further, the input shaft 12 is always connected to the first carrier C1, and the output shaft 13 is always connected to the fourth carrier C4. Specifically, the input shaft 12 is connected to the first carrier C1 via a power transmission member 18 passing between the front and rear first sun gears S1a and S1b. The rear first sun gear S1b and the fourth sun gear S4 are connected to each other via a power transmission shaft 15. The second carrier C2 and the fourth carrier C4 are connected via a power transmission member 16.

変速機構１４は、第１〜第４ギヤセットＰＧ１〜ＰＧ４により形成される上記複数の動力伝達経路の中から１つを選択して動力伝達経路を切り換えるための５つの摩擦締結要素（第１クラッチ２０、第２クラッチ２１、第３クラッチ２２、第１ブレーキ２３及び第２ブレーキ２４）を有している。 The speed change mechanism 14 has five friction fastening elements (first clutch 20) for selecting one from the plurality of power transmission paths formed by the first to fourth gear sets PG1 to PG4 and switching the power transmission path. , 2nd clutch 21, 3rd clutch 22, 1st brake 23 and 2nd brake 24).

第１クラッチ２０は、入力軸１２及び第１キャリヤＣ１と第３サンギヤＳ３との間を断接するように構成されている。第１クラッチ２０は、第１ギヤセットＰＧ１の前側に配設されている。 The first clutch 20 is configured to connect and disconnect the input shaft 12 and the first carrier C1 and the third sun gear S3. The first clutch 20 is arranged on the front side of the first gear set PG1.

第２クラッチ２１は、第１リングギヤＲ１及び第２サンギヤＳ２と第３サンギヤＳ３との間を断接するように構成されている。第２クラッチ２１は、第１クラッチ２０の前側に配設されている。 The second clutch 21 is configured to connect and disconnect the first ring gear R1 and the second sun gear S2 and the third sun gear S3. The second clutch 21 is arranged on the front side of the first clutch 20.

第３クラッチ２２は、第２リングギヤＲ２と第３サンギヤＳ３との間を断接するように構成されている。第３クラッチ２２は、第２クラッチ２１の前側に配設されている。 The third clutch 22 is configured to connect and disconnect between the second ring gear R2 and the third sun gear S3. The third clutch 22 is arranged on the front side of the second clutch 21.

第１ブレーキ２３は、第１サンギヤＳ１（厳密には前側第１サンギヤＳ１ａ）と変速機ケース１１との間を断接するように構成されている。第１ブレーキ２３は、第３クラッチ２２の前側における変速機ケース１１の近傍に配置されている。第１ブレーキ２３の締結時には、第１サンギヤＳ１が変速機ケース１１に固定される。 The first brake 23 is configured to connect and disconnect the first sun gear S1 (strictly speaking, the front first sun gear S1a) and the transmission case 11. The first brake 23 is arranged in the vicinity of the transmission case 11 on the front side of the third clutch 22. When the first brake 23 is engaged, the first sun gear S1 is fixed to the transmission case 11.

第２ブレーキ２４は、第３リングギヤＲ３と変速機ケース１１との間を断接するように構成されている。第２ブレーキ２４の締結時には、第３リングギヤＲ３が変速機ケース１１に固定される。 The second brake 24 is configured to connect and disconnect the third ring gear R3 and the transmission case 11. When the second brake 24 is engaged, the third ring gear R3 is fixed to the transmission case 11.

上記各摩擦締結要素は、該各摩擦締結要素の締結油圧室への作動油の供給により締結される。図２の締結表に示すように、５つの摩擦締結要素から３つの摩擦締結要素を選択的に締結することにより、前進の１速〜８速及び後退速が形成される。尚、図２の締結表では、○印が、摩擦締結要素が締結していることを示し、空欄が、摩擦締結要素が締結を解除（解放）していることを示す。 Each of the friction fastening elements is fastened by supplying hydraulic oil to the fastening hydraulic chamber of each friction fastening element. As shown in the fastening table of FIG. 2, by selectively fastening three friction fastening elements from the five friction fastening elements, forward speeds 1 to 8 and backward speeds are formed. In the fastening table of FIG. 2, the circles indicate that the friction fastening elements are fastened, and the blanks indicate that the friction fastening elements are released (released).

具体的には、第１クラッチ２０、第１ブレーキ２３及び第２ブレーキ２４の締結により、１速が形成される。第２クラッチ２１、第１ブレーキ２３及び第２ブレーキ２４の締結により、２速が形成される。第１クラッチ２０、第２クラッチ２１及び第２ブレーキ２４の締結により、３速が形成される。第２クラッチ２１、第３クラッチ２２及び第２ブレーキ２４の締結により、４速が形成される。第１クラッチ２０、第３クラッチ２２及び第２ブレーキ２４の締結により、５速が形成される。第１クラッチ２０、第２クラッチ２１及び第３クラッチ２２の締結により、６速が形成される。第１クラッチ２０、第３クラッチ２２及び第１ブレーキ２３の締結により、７速が形成される。第２クラッチ２１、第３クラッチ２２及び第１ブレーキ２３の締結により、８速が形成される。第３クラッチ２２、第１ブレーキ２３及び第２ブレーキ２４の締結により、後退速が形成される。６速では、入力軸１２の回転速度と出力軸１３の回転速度が同じになる。 Specifically, the first speed is formed by engaging the first clutch 20, the first brake 23, and the second brake 24. The second speed is formed by engaging the second clutch 21, the first brake 23, and the second brake 24. By engaging the first clutch 20, the second clutch 21, and the second brake 24, the third speed is formed. The fourth speed is formed by engaging the second clutch 21, the third clutch 22, and the second brake 24. The fifth speed is formed by engaging the first clutch 20, the third clutch 22, and the second brake 24. The sixth speed is formed by engaging the first clutch 20, the second clutch 21, and the third clutch 22. By engaging the first clutch 20, the third clutch 22, and the first brake 23, the seventh speed is formed. The eighth speed is formed by engaging the second clutch 21, the third clutch 22, and the first brake 23. By engaging the third clutch 22, the first brake 23, and the second brake 24, a reverse speed is formed. At the 6th speed, the rotation speed of the input shaft 12 and the rotation speed of the output shaft 13 are the same.

図３に、本発明の実施形態に係る電気抵抗圧入接合構造が適用されたクラッチドラムの例として、クラッチドラム５〜７を具体的に示す。尚、図３中、Ｃは、入力軸１２の中心軸（出力軸１３の中心軸）であり、クラッチドラム５〜７の中心軸（後述の第１筒状部材５０，６０，７０及び第２筒状部材５１，６１，７１の筒軸）でもある。クラッチドラム５〜７の軸方向は、入力軸１２の軸方向（出力軸１３の軸方向）と一致する。 FIG. 3 specifically shows clutch drums 5 to 7 as an example of a clutch drum to which the electric resistance press-fitting joint structure according to the embodiment of the present invention is applied. In FIG. 3, C is the central axis of the input shaft 12 (the central axis of the output shaft 13), and the central axes of the clutch drums 5 to 7 (the first tubular members 50, 60, 70 and the second described later). It is also a tubular shaft of the tubular members 51, 61, 71). The axial direction of the clutch drums 5 to 7 coincides with the axial direction of the input shaft 12 (the axial direction of the output shaft 13).

クラッチドラム５は、第１クラッチ２０、第２クラッチ２１及び第３クラッチ２２（これらは、クラッチ装置に相当する）に共通のクラッチドラムであって、後側の端部で第３ギヤセットＰＧ３の第３サンギヤＳ３（図４では、記載を省略）に連結され、前側の端部で連結部材８に連結される。 The clutch drum 5 is a clutch drum common to the first clutch 20, the second clutch 21, and the third clutch 22 (these correspond to the clutch device), and is the third gear set PG3 at the rear end. 3 It is connected to the sun gear S3 (not shown in FIG. 4), and is connected to the connecting member 8 at the front end.

クラッチドラム６は、第２クラッチ２１のクラッチドラムであって、クラッチドラム５の径方向内側に位置する。このクラッチドラム６は、その後側の端部で第１ギヤセットＰＧ１の第１リングギヤＲ１に連結される。クラッチドラム６の前側の端部には、複数の摩擦板３１が取り付けられている。これらの摩擦板３１は、第２クラッチ２１の締結時に、連結部材８において摩擦板３１と交互に並ぶように取り付けられた複数の摩擦板３５と係合する。 The clutch drum 6 is a clutch drum of the second clutch 21, and is located inside the clutch drum 5 in the radial direction. The clutch drum 6 is connected to the first ring gear R1 of the first gear set PG1 at the rear end. A plurality of friction plates 31 are attached to the front end of the clutch drum 6. These friction plates 31 engage with a plurality of friction plates 35 which are attached to the connecting member 8 so as to alternate with the friction plates 31 when the second clutch 21 is engaged.

クラッチドラム７は、第３クラッチ２２のクラッチドラムであって、クラッチドラム５の径方向内側でかつクラッチドラム６の径方向外側に位置する。このクラッチドラム７は、その後側の端部で第２ギヤセットＰＧ２の第２リングギヤＲ２に連結される。クラッチドラム７の前側の端部には、複数の摩擦板３２が取り付けられている。これらの摩擦板３２は、第３クラッチ２２の締結時に、連結部材８において摩擦板３２と交互に並ぶように取り付けられた複数の摩擦板３６と係合する。 The clutch drum 7 is a clutch drum of the third clutch 22, and is located inside the clutch drum 5 in the radial direction and outside the clutch drum 6 in the radial direction. The clutch drum 7 is connected to the second ring gear R2 of the second gear set PG2 at the rear end. A plurality of friction plates 32 are attached to the front end of the clutch drum 7. These friction plates 32 engage with a plurality of friction plates 36 that are attached to the connecting member 8 so as to alternate with the friction plates 32 when the third clutch 22 is engaged.

クラッチドラム５は、金属板材で成形された第１筒状部材５０（第１部材）と、該第１筒状部材５０の筒軸方向の一側（後側）において該第１筒状部材５０と同軸に配置された第２筒状部材５１（第２部材）とを備える。すなわち、第１筒状部材５０は、クラッチドラム５の軸方向の一部を構成し、第２筒状部材５１は、クラッチドラム５の軸方向の他の部分を構成する。第２筒状部材５１は、第１筒状部材５０とは異なる材料の金属板材で成形された有底筒状部材とされ、第１筒状部材５０側（前側）が開口している。 The clutch drum 5 includes a first tubular member 50 (first member) formed of a metal plate material, and the first tubular member 50 on one side (rear side) of the first tubular member 50 in the axial direction. It includes a second tubular member 51 (second member) arranged coaxially with the. That is, the first tubular member 50 constitutes a part of the clutch drum 5 in the axial direction, and the second tubular member 51 constitutes another part of the clutch drum 5 in the axial direction. The second tubular member 51 is a bottomed tubular member formed of a metal plate material different from that of the first tubular member 50, and the first tubular member 50 side (front side) is open.

クラッチドラム６も、クラッチドラム５と同様に、金属板材で成形された第１筒状部材６０（第１部材）と、該第１筒状部材６０の筒軸方向の一側（後側）において該第１筒状部材６０と同軸に配置された第２筒状部材６１（第２部材）とを備える。すなわち、第１筒状部材６０は、クラッチドラム６の軸方向の一部を構成し、第２筒状部材６１は、クラッチドラム６の軸方向の他の部分を構成する。第２筒状部材６１は、第１筒状部材６０とは異なる材料の金属板材で成形された有底筒状部材とされ、第１筒状部材６０側（前側）が開口している。 Similarly to the clutch drum 5, the clutch drum 6 also has a first tubular member 60 (first member) formed of a metal plate material and one side (rear side) of the first tubular member 60 in the axial direction. A second tubular member 61 (second member) arranged coaxially with the first tubular member 60 is provided. That is, the first tubular member 60 constitutes a part of the clutch drum 6 in the axial direction, and the second tubular member 61 constitutes another part of the clutch drum 6 in the axial direction. The second tubular member 61 is a bottomed tubular member formed of a metal plate material different from that of the first tubular member 60, and the first tubular member 60 side (front side) is open.

クラッチドラム７も、クラッチドラム５と同様に、金属板材で成形された第１筒状部材７０（第１部材）と、該第１筒状部材７０の筒軸方向の一側（後側）において該第１筒状部材７０と同軸に配置された第２筒状部材７１（第２部材）とを備える。すなわち、第１筒状部材７０は、クラッチドラム７の軸方向の一部を構成し、第２筒状部材７１は、クラッチドラム７の軸方向の他の部分を構成する。第２筒状部材７１は、第１筒状部材７０とは異なる材料の金属板材で成形された有底筒状部材とされ、第１筒状部材７０側（前側）が開口している。 Similarly to the clutch drum 5, the clutch drum 7 also has a first tubular member 70 (first member) formed of a metal plate material and one side (rear side) of the first tubular member 70 in the axial direction. A second tubular member 71 (second member) arranged coaxially with the first tubular member 70 is provided. That is, the first tubular member 70 constitutes a part of the clutch drum 7 in the axial direction, and the second tubular member 71 constitutes another part of the clutch drum 7 in the axial direction. The second tubular member 71 is a bottomed tubular member formed of a metal plate material different from that of the first tubular member 70, and the first tubular member 70 side (front side) is open.

本実施形態では、第１筒状部材５０，６０，７０の材料は、第２筒状部材５１，６１，７１の材料よりも融点が低い材料である。具体的に、クラッチドラム５〜７の軽量化のために、第１筒状部材５０，６０，７０の材料は、アルミニウム又はアルミニウム合金であり、トルク伝達のために強度が必要な第２筒状部材５１，６１，７１の材料は、鋼である。尚、クラッチドラム５〜７の軽量化のために、第１筒状部材５０，６０，７０の材料が、マグネシウム又はマグネシウム合金であってもよい。 In the present embodiment, the material of the first tubular member 50, 60, 70 is a material having a lower melting point than the material of the second tubular member 51, 61, 71. Specifically, in order to reduce the weight of the clutch drums 5 to 7, the material of the first tubular members 50, 60, 70 is aluminum or an aluminum alloy, and the second tubular member requires strength for torque transmission. The material of the members 51, 61, 71 is steel. In order to reduce the weight of the clutch drums 5 to 7, the material of the first tubular members 50, 60, 70 may be magnesium or a magnesium alloy.

クラッチドラム５における第１筒状部材５０の後側の端部及び第２筒状部材５１の前側の端部は、互いに接合されている。すなわち、第１筒状部材５０の外周面に設けられた接合部５０ａと第２筒状部材５１の内周面に設けられた接合部５１ａとが、互いに圧入されかつ電気抵抗接合されている。 The rear end of the first tubular member 50 and the front end of the second tubular member 51 of the clutch drum 5 are joined to each other. That is, the joint portion 50a provided on the outer peripheral surface of the first tubular member 50 and the joint portion 51a provided on the inner peripheral surface of the second tubular member 51 are press-fitted into each other and electrically resistance-bonded.

クラッチドラム６における第１筒状部材６０の後側の端部及び第２筒状部材６１の前側の端部も、クラッチドラム５と同様に、互いに接合されている。すなわち、第１筒状部材６０の外周面に設けられた接合部６０ａと第２筒状部材６１の内周面に設けられた接合部６１ａとが、互いに圧入されかつ電気抵抗接合されている。 The rear end of the first tubular member 60 and the front end of the second tubular member 61 of the clutch drum 6 are also joined to each other in the same manner as the clutch drum 5. That is, the joint portion 60a provided on the outer peripheral surface of the first tubular member 60 and the joint portion 61a provided on the inner peripheral surface of the second tubular member 61 are press-fitted into each other and electrically resistance-bonded.

クラッチドラム７における第１筒状部材７０の後側の端部及び第２筒状部材７１の前側の端部も、クラッチドラム５，６と同様に、互いに接合されている。すなわち、第１筒状部材７０の外周面に設けられた接合部７０ａと第２筒状部材７１の内周面に設けられた接合７１ａとが、互いに圧入されかつ電気抵抗接合されている。 The rear end of the first tubular member 70 and the front end of the second tubular member 71 of the clutch drum 7 are also joined to each other in the same manner as the clutch drums 5 and 6. That is, the joint portion 70a provided on the outer peripheral surface of the first tubular member 70 and the joint 71a provided on the inner peripheral surface of the second tubular member 71 are press-fitted into each other and electrically resistance-bonded.

以下、クラッチドラム７の電気抵抗圧入接合構造について、図４により詳細に説明する。この説明において、第１筒状部材７０の筒軸方向（第２筒状部材７１の筒軸方向）を、単に筒軸方向という。クラッチドラム５，６の電気抵抗圧入接合構造も、クラッチドラム７の電気抵抗圧入接合構造と同様であるので、その説明は省略する。 Hereinafter, the electric resistance press-fitting joint structure of the clutch drum 7 will be described in detail with reference to FIG. In this description, the tubular axial direction of the first tubular member 70 (the tubular axial direction of the second tubular member 71) is simply referred to as the tubular axial direction. Since the electric resistance press-fitting joint structure of the clutch drums 5 and 6 is the same as the electric resistance press-fitting joint structure of the clutch drum 7, the description thereof will be omitted.

第１筒状部材７０の外周面及び第２筒状部材７１の内周面には、互いに圧入されかつ電気抵抗接合された接合部７０ａ，７１ａが周方向全周に亘ってそれぞれ設けられている。第１筒状部材７０の外周面における接合部７０ａの接合前は、接合部７０ａよりも僅かに大径の接合予定部７０ｂとされている（図４の二点鎖線及び図５参照）。一方、第２筒状部材７１の内周面における接合部７１ａの接合前は、接合部７１ａよりも僅かに小径の接合予定部７１ｂとされている（図４の二点鎖線及び図５参照）。すなわち、接合予定部７１ｂは、接合予定部７０ｂよりも僅かに小径であるが、接合後における接合部７０ａ，７１ａは同じ径になる。 Joint portions 70a and 71a, which are press-fitted and electrically resistant to each other, are provided on the outer peripheral surface of the first tubular member 70 and the inner peripheral surface of the second tubular member 71, respectively, over the entire circumference in the circumferential direction. .. Before joining the joint portion 70a on the outer peripheral surface of the first tubular member 70, the joint portion 70b has a diameter slightly larger than that of the joint portion 70a (see the two-dot chain line in FIG. 4 and FIG. 5). On the other hand, before joining the joint portion 71a on the inner peripheral surface of the second tubular member 71, the joint portion 71b having a diameter slightly smaller than that of the joint portion 71a is set as the planned joint portion 71b (see the alternate long and short dash line in FIG. 4 and FIG. 5). .. That is, the planned joint portion 71b has a slightly smaller diameter than the planned joint portion 70b, but the joint portions 70a and 71a after joining have the same diameter.

第１筒状部材７０は、接合部７０ａ（７１ａ）に対して上記筒軸方向の第２筒状部材７１とは反対側（前側）に隣接して設けられかつ外径が接合部７０ａと略同径で上記筒軸方向に延びる軸方向延設部７０ｃを有している。この軸方向延設部７０ｃの外径は、厳密には、接合予定部７０ｂと同径であって、接合部７０ａよりも僅かに大径とされる（図４及び図５では、誇張して描いている）。 The first tubular member 70 is provided adjacent to the joint portion 70a (71a) on the opposite side (front side) of the second tubular member 71 in the tubular axial direction, and the outer diameter is abbreviated as the joint portion 70a. It has an axial extension portion 70c having the same diameter and extending in the tubular axial direction. Strictly speaking, the outer diameter of the axially extending portion 70c is the same as that of the planned joint portion 70b and slightly larger than that of the joint portion 70a (exaggerated in FIGS. 4 and 5). I'm drawing).

また、第１筒状部材７０は、軸方向延設部７０ｃの反接合部７０ａ側（前側）の端部から径方向外側に延びる径方向延設部７０ｄと、接合部７０ａ（７１ａ）に対して上記筒軸方向の第２筒状部材７１側（後側）に隣接して設けられた、外径が接合部７０ａよりも小径の小径部７０ｅとを更に有する。本実施形態では、小径部７０ｅは、後側に向かって徐々に小径となるテーパ状に形成されているが、接合部７０ａとの間に段差を有して、小径部７０ｅの上記筒軸方向の全体が一定の径であってもよい。 Further, the first tubular member 70 has a radial extension portion 70d extending radially outward from an end portion of the axial extension portion 70c on the anti-joint portion 70a side (front side), and the joint portion 70a (71a). Further, it further has a small diameter portion 70e having an outer diameter smaller than that of the joint portion 70a, which is provided adjacent to the second tubular member 71 side (rear side) in the tubular axis direction. In the present embodiment, the small diameter portion 70e is formed in a tapered shape that gradually decreases in diameter toward the rear side, but has a step between the small diameter portion 70e and the joint portion 70a in the axial direction of the small diameter portion 70e. The whole of may have a constant diameter.

さらに、本実施形態では、第１筒状部材７０は、小径部７０ｅの反接合部７０ａ側（後側）の端部から径方向内側に延びるフランジ部７７ｆを更に有する。 Further, in the present embodiment, the first tubular member 70 further has a flange portion 77f extending radially inward from the end portion of the small diameter portion 70e on the anti-joining portion 70a side (rear side).

第２筒状部材７１は、接合部７１ａ（７０ａ）に対して上記筒軸方向の第１筒状部材７０側（前側）に隣接して設けられた、内径が接合部７１ａよりも大径の大径部７１ｃと、接合部７１ａに対して上記筒軸方向の第１筒状部材７０とは反対側（後側）に隣接して設けられかつ内径が接合部７１ａと略同径で上記筒軸方向に延びる軸方向延設部７１ｄとを有している。本実施形態では、大径部７１ｃは、前側に向かって徐々に大径となった後に一定の径で前側に延びているが、接合部７１ａとの間に段差を有して、大径部７１ｃの上記筒軸方向の全体が一定の径であってもよい。軸方向延設部７１ｄの内径は、厳密には、接合予定部７１ｂと同径であって、接合部７１ａよりも僅かに小径とされる。また、第２筒状部材７１は、軸方向延設部７１ｄの反接合部７１ａ側（後側）の端部から径方向内側に延びる径方向延設部７１ｅを更に有する。 The second tubular member 71 is provided adjacent to the first tubular member 70 side (front side) in the tubular axial direction with respect to the joint portion 71a (70a), and has an inner diameter larger than that of the joint portion 71a. The cylinder is provided adjacent to the large diameter portion 71c and the joint portion 71a on the opposite side (rear side) of the first tubular member 70 in the tubular axis direction, and has an inner diameter substantially the same as that of the joint portion 71a. It has an axial extension portion 71d extending in the axial direction. In the present embodiment, the large diameter portion 71c gradually increases in diameter toward the front side and then extends to the front side with a constant diameter, but has a step between the large diameter portion 71a and the large diameter portion 71a. The entire diameter of 71c in the tubular axis direction may be constant. Strictly speaking, the inner diameter of the axially extending portion 71d is the same as that of the planned joint portion 71b, and is slightly smaller than that of the joint portion 71a. Further, the second tubular member 71 further has a radial extension portion 71e extending radially inward from the end portion of the axial extension portion 71d on the anti-joining portion 71a side (rear side).

本実施形態では、第１筒状部材７０の外周面と第２筒状部材７１の内周面との間において接合部７０ａ，７１ａに対して上記筒軸方向の第２筒状部材７１とは反対側（前側）の近傍に、第１筒状部材７０の軸方向延設部７０ｃ及び径方向延設部７０ｄと第２筒状部材７１の大径部７１ｃとにより囲まれた第１バリ収容空間部９１が形成されている。 In the present embodiment, the second tubular member 71 in the tubular axial direction is defined between the outer peripheral surface of the first tubular member 70 and the inner peripheral surface of the second tubular member 71 with respect to the joints 70a and 71a. The first burr accommodating in the vicinity of the opposite side (front side), surrounded by the axial extension portion 70c and the radial extension portion 70d of the first tubular member 70 and the large diameter portion 71c of the second tubular member 71. The space portion 91 is formed.

第１筒状部材７０の径方向延設部７０ｄの後側の面、及び、第２筒状部材７１の大径部７１ｃの前側の面には、互いに当接する当接部７０ｇ，７１ｆが設けられている。第１バリ収容空間部９１は、当接部７０ｇ，７１ｆの互いの当接により閉じられている。当接部７０ｇ，７１ｆは、接合部７０ａ，７１ａ（接合予定部７０ｂ，７１ｂ）の圧入により互いに当接する。すなわち、該圧入の完了と略同時に、当接部７０ｇ，７１ｆは互いに当接することになる。 Contact portions 70g and 71f that come into contact with each other are provided on the rear surface of the radial extension portion 70d of the first tubular member 70 and the front surface of the large diameter portion 71c of the second tubular member 71. Has been done. The first burr accommodating space 91 is closed by the contacting portions 70g and 71f with each other. The contact portions 70g and 71f come into contact with each other by press-fitting the joint portions 70a and 71a (scheduled joint portions 70b and 71b). That is, substantially at the same time as the press-fitting is completed, the contact portions 70g and 71f come into contact with each other.

第１バリ収容空間部９１は、第１筒状部材７０及び第２筒状部材７１の接合部７０ａ，７１ａ（接合予定部７０ｂ，７１ｂ）の圧入時に接合部７０ａ，７１ａから前側に延出したバリ９５（図４参照）を収容する。この収容されたバリ９５が第１バリ収容空間部９１から出ないように、第１筒状部材７０の軸方向延設部７０ｃ及び径方向延設部７０ｄと第２筒状部材７１の大径部７１ｃとによって、第１バリ収容空間部９１の全体が囲まれている。 The first burr accommodating space 91 extends forward from the joints 70a and 71a when the joints 70a and 71a (scheduled joints 70b and 71b) of the first tubular member 70 and the second tubular member 71 are press-fitted. Accommodates Bali 95 (see FIG. 4). The large diameters of the axial extension portion 70c, the radial extension portion 70d, and the second tubular member 71 of the first tubular member 70 so that the accommodated burr 95 does not come out of the first burr accommodation space portion 91. The entire first burr accommodating space 91 is surrounded by the portion 71c.

本実施形態では、第１筒状部材７０の外周面と第２筒状部材７１の内周面との間において接合部７０ａ，７１ａに対して上記筒軸方向の第２筒状部材７１側（後側）の近傍に、第１筒状部材７０の小径部７０ｅと第２筒状部材７１の軸方向延設部７１ｄ及び径方向延設部７１ｅとにより囲まれた第２バリ収容空間部９２が形成されている。 In the present embodiment, between the outer peripheral surface of the first tubular member 70 and the inner peripheral surface of the second tubular member 71, the second tubular member 71 side in the tubular axial direction with respect to the joint portions 70a, 71a ( A second burr accommodating space 92 surrounded by a small diameter portion 70e of the first tubular member 70, an axial extension portion 71d and a radial extension portion 71e of the second tubular member 71, in the vicinity of the rear side). Is formed.

第１筒状部材７０のフランジ部７０ｆの後側の面、及び、第２筒状部材７１の径方向延設部７１ｅの前側の面には、互いに当接する当接部７０ｈ，７１ｇが設けられている。第２バリ収容空間部９２は、当接部７０ｈ，７１ｇの互いの当接により閉じられている。当接部７０ｈ，７１ｇも、当接部７０ｇ，７１ｆと同様に、接合部７０ａ，７１ａ（接合予定部７０ｂ，７１ｂ）の圧入により互いに当接する。すなわち、該圧入の完了と略同時に、当接部７０ｈ，７１ｇも互いに当接することになる。 Contact portions 70h and 71g that come into contact with each other are provided on the rear surface of the flange portion 70f of the first tubular member 70 and the front surface of the radial extension portion 71e of the second tubular member 71. ing. The second burr accommodating space 92 is closed by the contacting portions 70h and 71g with each other. The contact portions 70h and 71g also come into contact with each other by press-fitting the joint portions 70a and 71a (scheduled joint portions 70b and 71b) in the same manner as the contact portions 70g and 71f. That is, substantially at the same time as the press-fitting is completed, the contact portions 70h and 71g also come into contact with each other.

第２バリ収容空間部９２は、第１筒状部材７０及び第２筒状部材７１の接合部７０ａ，７１ａ（接合予定部７０ｂ，７１ｂ）の圧入時に接合部７０ａ，７１ａから後側に延出したバリ９６（図４参照）を収容する。この収容されたバリ９６が第２バリ収容空間部９２から出ないように、第１筒状部材７０の小径部７０ｅと第２筒状部材７１の軸方向延設部７１ｄ及び径方向延設部７１ｅとによって、第２バリ収容空間部９２の全体が囲まれている。 The second burr accommodating space 92 extends rearward from the joints 70a and 71a when the joints 70a and 71a (scheduled joints 70b and 71b) of the first tubular member 70 and the second tubular member 71 are press-fitted. The burr 96 (see FIG. 4) is housed. The small diameter portion 70e of the first tubular member 70, the axial extension portion 71d and the radial extension portion of the second tubular member 71 so that the accommodated burr 96 does not come out of the second burr accommodation space portion 92. The entire second burr accommodating space 92 is surrounded by 71e.

このように本実施形態では、第１筒状部材７０及び第２筒状部材７１の折り曲げ形状によって、接合部７０ａ，７１ａ（接合予定部７０ｂ，７１ｂ）の圧入の完了と略同時に、上記のような、閉じられた第１及び第２バリ収容空間部９１，９２が形成されることになる。 As described above, in the present embodiment, due to the bent shape of the first tubular member 70 and the second tubular member 71, substantially at the same time as the press-fitting of the joint portions 70a and 71a (scheduled joint portions 70b and 71b) is completed, as described above. The closed first and second burr accommodating spaces 91 and 92 will be formed.

本実施形態では、第１筒状部材７０がアルミニウム又はアルミニウム合金で構成され、第２筒状部材７１が鋼で構成されているので、接合部７０ａ，７１ａ（接合予定部７０ｂ，７１ｂ）の圧入時に接合部７０ａ，７１ａから前側に延出するバリ９５の方が、後側に延出するバリ９６よりも多く延出する。 In the present embodiment, since the first tubular member 70 is made of aluminum or an aluminum alloy and the second tubular member 71 is made of steel, the joint portions 70a and 71a (scheduled joint portions 70b and 71b) are press-fitted. Occasionally, the burrs 95 extending forward from the joints 70a and 71a extend more than the burrs 96 extending rearward.

このため、第１バリ収容空間部９１の容積が、第２バリ収容空間部９２の容積よりも大きくされている。一方、第１バリ収容空間部９１の容積（ここでは、上記筒軸方向の長さ）は、スペースの関係から出来る限り小さくすることが好ましい。本実施形態では、第１バリ収容空間部９１の上記筒軸方向の長さが、バリ９５の長さよりも短くされている。 Therefore, the volume of the first burr accommodating space 91 is made larger than the volume of the second burr accommodating space 92. On the other hand, the volume of the first burr accommodating space 91 (here, the length in the tubular axis direction) is preferably made as small as possible due to the space. In the present embodiment, the length of the first burr accommodating space 91 in the tubular axis direction is shorter than the length of the burr 95.

この場合、接合部７０ａ，７１ａの圧入の進行に伴って接合部７０ａ，７１ａから延出するバリ９５が、後述の如く、当接部７０ｇ，７１ｆの間に挟まる可能性がある。 In this case, the burr 95 extending from the joints 70a and 71a may be sandwiched between the contact portions 70g and 71f as the press-fitting of the joints 70a and 71a progresses.

そこで、本実施形態では、バリ９５が当接部７０ｇ，７１ｆの間に挟まるのを防止するために、第１バリ収容空間部９１の内壁面（本実施形態では、第１筒状部材７０の径方向延設部７０ｄの後側の面における当接部７０ｇよりも径方向内側の部分）に、接合部７０ａ，７１ａの圧入の進行に伴って接合部７０ａ，７１ａから延出するバリ９５の延出方向を、当接部７０ｇ，７１ｆに向かわないように偏向する偏向部としての突起部８１（図３では、記載を省略している）が、上記内壁面に対して後側に突出するように形成されている。突起部８１は、第１筒状部材７０をプレス成形する際に他の部分と共にプレスにより形成するか、又は、第１筒状部材７０のプレス成形後に、突起部８１に隣接する部分を、突起部８１を形成する部分が盛り上がるように凹ませることで形成することが可能である。或いは、第１バリ収容空間部９１の内壁面に別部材を貼り付けて突起部８１を構成してもよい。 Therefore, in the present embodiment, in order to prevent the burr 95 from being sandwiched between the contact portions 70g and 71f, the inner wall surface of the first burr accommodating space portion 91 (in the present embodiment, the first tubular member 70 A portion of the burr 95 extending from the joint portion 70a, 71a as the press-fitting of the joint portion 70a, 71a progresses to the portion on the rear surface of the radial extension portion 70d, which is radially inside the contact portion 70g. A protrusion 81 (not shown in FIG. 3) as a deflection portion that deflects the extension direction so as not to face the contact portions 70g and 71f projects rearward with respect to the inner wall surface. It is formed like this. The protrusion 81 is formed by pressing together with other parts when the first tubular member 70 is press-molded, or after the first tubular member 70 is press-molded, a portion adjacent to the protrusion 81 is projected. It can be formed by denting the portion forming the portion 81 so as to be raised. Alternatively, another member may be attached to the inner wall surface of the first burr accommodating space 91 to form the protrusion 81.

次に、クラッチドラム７の第１筒状部材７０と第２筒状部材７１との電気抵抗圧入接合方法について、図５により説明する。尚、図５に示すように、この電気抵抗圧入接合方法では、第１筒状部材７０及び第２筒状部材７１は、それらの筒軸（図５では、右側のかなり離れた位置に位置するので、描かれていない）が上下方向に延びるように配置されるので、この電気抵抗圧入接合方法の説明では、車両に搭載された場合の後側を上側といい、車両に搭載された場合の前側を下側という。クラッチドラム５，６の電気抵抗圧入接合方法についても、クラッチドラム７の電気抵抗圧入接合方法と同様であるので、その説明は省略する。 Next, an electric resistance press-fitting method of the first tubular member 70 and the second tubular member 71 of the clutch drum 7 will be described with reference to FIG. As shown in FIG. 5, in this electric resistance press-fitting method, the first tubular member 70 and the second tubular member 71 are located at positions considerably separated from each other on their tubular axes (in FIG. 5, on the right side). (Because it is not drawn) is arranged so as to extend in the vertical direction, so in the explanation of this electric resistance press-fitting method, the rear side when mounted on a vehicle is called the upper side, and when mounted on a vehicle, it is referred to as the upper side. The front side is called the lower side. Since the electric resistance press-fitting method of the clutch drums 5 and 6 is the same as the electric resistance press-fitting method of the clutch drum 7, the description thereof will be omitted.

先ず、アルミニウム又はアルミニウム合金の板材をプレス成形して第１筒状部材７０を成形するとともに、鋼の板材をプレス成形して第２筒状部材７１を成形する。これらの成形時において、第１筒状部材７０の外周面及び第２筒状部材７１の内周面に、互いに圧入されかつ電気抵抗接合される接合予定部７０ｂ，７１ｂを周方向全周に亘ってそれぞれ設けるとともに、第１筒状部材７０には、上述した、軸方向延設部７０ｃ、径方向延設部７０ｄ（当接部７０ｇ）、小径部７０ｅ、フランジ部７０ｆ、及び突起部８１を設け、第２筒状部材７１には、上述した、大径部７１ｃ（当接部７１ｆ）、軸方向延設部７１ｄ、及び径方向延設部７１ｅを設ける。尚、接合予定部７０ｂ，７１ｂは、最終的に切削することにより、正確な寸法に仕上げる。 First, the aluminum or aluminum alloy plate material is press-molded to form the first tubular member 70, and the steel plate material is press-molded to form the second tubular member 71. At the time of these moldings, the planned joining portions 70b and 71b, which are press-fitted into each other and electrically resistance-bonded to the outer peripheral surface of the first tubular member 70 and the inner peripheral surface of the second tubular member 71, are formed all around the circumferential direction. The first tubular member 70 is provided with the above-mentioned axial extension portion 70c, radial extension portion 70d (contact portion 70g), small diameter portion 70e, flange portion 70f, and protrusion 81. The second tubular member 71 is provided with the large-diameter portion 71c (contact portion 71f), the axial extension portion 71d, and the radial extension portion 71e described above. The parts to be joined 70b and 71b are finally cut to have accurate dimensions.

上記成形後の第１筒状部材７０の形状は、接合予定部７０ｂ以外は、上述した接合後の第１筒状部材７０の形状と同じであり、上記成形後の第２筒状部材７１の形状は、接合予定部７１ｂ以外は、上述した接合後の第２筒状部材７１の形状と同じである。 The shape of the first tubular member 70 after molding is the same as the shape of the first tubular member 70 after joining except for the planned joining portion 70b, and the shape of the second tubular member 71 after molding is the same. The shape is the same as the shape of the second tubular member 71 after joining, except for the planned joining portion 71b.

続いて、上記成形した第１筒状部材７０の上側に、上記成形した第２筒状部材７１を該第１筒状部材７０と同軸に配置して、第１筒状部材７０の外周面と第２筒状部材の内周面とを互いに圧入しかつ電気抵抗接合する。 Subsequently, the molded second tubular member 71 is arranged coaxially with the first tubular member 70 on the upper side of the molded first tubular member 70 to form an outer peripheral surface of the first tubular member 70. The inner peripheral surfaces of the second tubular member are press-fitted into each other and electrically resistant to each other.

具体的には、リング状をなす銅製の下側電極９７と、該下側電極９７の上側に、下側電極９７と同軸に配置された、リング状をなす銅製の上側電極９８とを備えた加圧通電装置を用意する。下側電極９７及び上側電極９８は、加圧部材を兼用しており、上側電極９８が下側電極９７に向かって移動することで、下側電極９７と上側電極９８との間に配置された部材を加圧することが可能に構成されている。 Specifically, a ring-shaped lower electrode 97 made of copper and a ring-shaped upper electrode 98 made of copper arranged coaxially with the lower electrode 97 are provided above the lower electrode 97. Prepare a pressurized energizer. The lower electrode 97 and the upper electrode 98 also serve as a pressurizing member, and are arranged between the lower electrode 97 and the upper electrode 98 by moving the upper electrode 98 toward the lower electrode 97. It is configured so that the members can be pressurized.

そして、下側電極９７上に第１筒状部材７０の径方向延設部７０ｄが載るように、第１筒状部材７０をセットする。このとき、第１筒状部材７０の筒軸が、下側電極９７の中心軸と略一致する。 Then, the first tubular member 70 is set so that the radial extension portion 70d of the first tubular member 70 is placed on the lower electrode 97. At this time, the tubular axis of the first tubular member 70 substantially coincides with the central axis of the lower electrode 97.

続いて、下側電極９７上の第１筒状部材７０の上部に、第２筒状部材７１をセットする。このとき、第１筒状部材７０の接合予定部７０ｂの上端に第２筒状部材７１の接合予定部７１ｂの下端が当接するとともに、第２筒状部材７１の筒軸が第１筒状部材７０の筒軸と略一致している。図５では、この当接した状態を示している。 Subsequently, the second tubular member 71 is set on the upper portion of the first tubular member 70 on the lower electrode 97. At this time, the lower end of the planned joining portion 71b of the second tubular member 71 comes into contact with the upper end of the scheduled joining portion 70b of the first tubular member 70, and the tubular shaft of the second tubular member 71 is the first tubular member. It is substantially the same as the cylinder shaft of 70. FIG. 5 shows this contacted state.

次いで、上側電極９８を下側電極９７に向けて移動させて、下側電極９７及び上側電極９８により第１及び第２筒状部材７０，７１を加圧することで、第１筒状部材７０及び第２筒状部材７１の接合予定部７０ｂ，７１ｂを互いに圧入する。このとき、下側電極９７及び上側電極９８を介して、第１及び第２筒状部材７０，７１間に通電する。このように、下側電極９７及び上側電極９８によって、接合予定部７０ｂ，７１ｂを互いに圧入しかつ電気抵抗接合する。 Next, the upper electrode 98 is moved toward the lower electrode 97, and the first and second tubular members 70 and 71 are pressurized by the lower electrode 97 and the upper electrode 98, whereby the first tubular member 70 and The planned joint portions 70b and 71b of the second tubular member 71 are press-fitted into each other. At this time, electricity is applied between the first and second tubular members 70 and 71 via the lower electrode 97 and the upper electrode 98. In this way, the lower electrode 97 and the upper electrode 98 press-fit the planned joint portions 70b and 71b into each other and perform electrical resistance bonding.

接合予定部７０ｂ，７１ｂの圧入時に、接合予定部７０ｂ，７１ｂの表面が削られて、バリ９５，９６が生じる。本実施形態では、特に融点の低い側の部材である第１筒状部材７０の接合予定部７０ｂの表面が多く削られ、接合予定部７０ｂに対する接合予定部７１ｂの下側への移動に伴って、多くのバリ９５が、接合予定部７０ｂ，７１ｂ（接合部７０ａ，７１ａ）から下側に延出する。また、少量ではあるが、接合予定部７０ｂ，７１ｂ（接合部７０ａ，７１ａ）から上側に延出するバリ９６も生じる。 When the planned joining portions 70b and 71b are press-fitted, the surfaces of the planned joining portions 70b and 71b are scraped to generate burrs 95 and 96. In the present embodiment, the surface of the planned joining portion 70b of the first tubular member 70, which is a member having a particularly low melting point, is largely scraped off, and as the planned joining portion 71b moves downward with respect to the planned joining portion 70b. , Many burrs 95 extend downward from the planned joining portions 70b, 71b (joining portions 70a, 71a). In addition, although the amount is small, burrs 96 extending upward from the planned joining portions 70b and 71b (joining portions 70a and 71a) are also generated.

バリ９５は、接合予定部７０ｂ，７１ｂ（接合部７０ａ，７１ａ）の圧入の進行に伴って、基本的に、接合予定部７０ｂ，７１ｂから軸方向延設部７０ｃの径方向外側の面に沿って下側に延出した後、径方向延設部７０ｄの上側の面に沿って当接部７０ｇへと向かう。仮に、径方向延設部７０ｄの上側の面に突起部８１が形成されていないとすると、当接部７０ｇ，７１ｆが互いに当接する前にバリ９５が当接部７０ｇ，７１ｆの間にまで達して、当接部７０ｇ，７１ｆの当接によりバリ９５が当接部７０ｇ，７１ｆの間に挟まれる可能性が高い。 The burrs 95 basically follow the radial outer surface of the axially extending portion 70c from the planned joint portions 70b and 71b as the press-fitting of the planned joint portions 70b and 71b (joint portions 70a and 71a) progresses. After extending downward, it goes toward the contact portion 70g along the upper surface of the radial extension portion 70d. Assuming that the protrusion 81 is not formed on the upper surface of the radial extension 70d, the burr 95 reaches between the contact portions 70g and 71f before the contact portions 70g and 71f come into contact with each other. Therefore, there is a high possibility that the burr 95 is sandwiched between the contact portions 70g and 71f due to the contact between the contact portions 70g and 71f.

これに対し、本実施形態では、径方向延設部７０ｄの上側の面に突起部８１が形成されているので、当接部７０ｇへと向かうバリ９５の延出方向が突起部８１によって偏向され、これにより、図４に示すように、バリ９５は、突起部８１で反転するように上側（車両に搭載された場合の後側）へと向かうことになる。 On the other hand, in the present embodiment, since the protrusion 81 is formed on the upper surface of the radial extension portion 70d, the extension direction of the burr 95 toward the contact portion 70g is deflected by the protrusion 81. As a result, as shown in FIG. 4, the burr 95 faces upward (rear side when mounted on the vehicle) so as to be inverted at the protrusion 81.

第１筒状部材７０及び第２筒状部材７１の接合予定部７０ｂ，７１ｂの圧入の完了と略同時に、当接部７０ｇ，７１ｆが互いに当接するとともに、当接部７０ｈ，７１ｇも互いに当接する。これにより、第１筒状部材７０の外周面と第２筒状部材７１の内周面との間に、閉じられた第１及び第２バリ収容空間部９１，９２が形成され、第１及び第２バリ収容空間部９１，９２に、バリ９５，９６がそれぞれ収容されることになる。 Almost at the same time as the press-fitting of the planned joining portions 70b and 71b of the first tubular member 70 and the second tubular member 71 is completed, the contact portions 70g and 71f come into contact with each other, and the contact portions 70h and 71g also come into contact with each other. .. As a result, closed first and second burr accommodating space portions 91 and 92 are formed between the outer peripheral surface of the first tubular member 70 and the inner peripheral surface of the second tubular member 71, and the first and second burr accommodating spaces 91 and 92 are formed. The burrs 95 and 96 are accommodated in the second burr accommodating spaces 91 and 92, respectively.

上記のようにバリ９５は突起部８１で反転するので、当接部７０ｇ，７１ｆが互いに当接する際に、当接部７０ｇ，７１ｆの間にバリ９５は存在せず、この結果、バリ９５が当接部７０ｇ，７１ｆの間に挟まれることはなくなる。 Since the burr 95 is inverted at the protrusion 81 as described above, when the abutting portions 70g and 71f come into contact with each other, the burr 95 does not exist between the abutting portions 70g and 71f, and as a result, the burr 95 is formed. It will not be sandwiched between the contact portions 70g and 71f.

したがって、本実施形態では、第１バリ収容空間部９１の上記筒軸方向の長さがバリ９５の長さよりも短くても、バリ９５が当接部７０ｇ，７１ｆの間に挟まれるのを防止することができる。この結果、当接部７０ｇ，７１ｆの間に挟まれたバリ９５がちぎれて第１バリ収容空間部９１の外側に出ることはなく、また、第１筒状部材７０と第２筒状部材７１との位置関係を正確な位置関係に維持することができる。 Therefore, in the present embodiment, even if the length of the first burr accommodating space 91 in the tubular axis direction is shorter than the length of the burr 95, the burr 95 is prevented from being sandwiched between the abutting portions 70g and 71f. can do. As a result, the burr 95 sandwiched between the abutting portions 70g and 71f is not torn off and does not come out to the outside of the first burr accommodating space 91, and the first tubular member 70 and the second tubular member 71. The positional relationship with and can be maintained in an accurate positional relationship.

本発明は、上記実施形態に限られるものではなく、請求の範囲の主旨を逸脱しない範囲で代用が可能である。 The present invention is not limited to the above embodiment, and can be substituted within a range that does not deviate from the gist of the claims.

例えば、上記実施形態では、第１筒状部材７０の外周面と第２筒状部材７１の内周面との間において接合部７０ａ，７１ａに対して上記筒軸方向の両側に、第１及び第２バリ収容空間部９１，９２をそれぞれ形成するようにしたが、バリ９５がどのように延出するかは、第１及び第２筒状部材７０，７１の形状、材料、下側電極９７及び上側電極９８による第１筒状部材７０及び第２筒状部材７１の加圧の仕方等によって変わり、バリ９５，９６のうちの一方しか延出しない場合もある。したがって、バリ９５，９６がどのように延出するかを事前に調べておき、バリ９５，９６のうちの一方しか延出しない場合には、バリ９５が延出する側のみにバリ収容空間部を形成するようにしてもよい。 For example, in the above embodiment, between the outer peripheral surface of the first tubular member 70 and the inner peripheral surface of the second tubular member 71, on both sides of the joint portions 70a, 71a in the tubular axial direction, the first and the first The second burr accommodating space portions 91 and 92 are formed, respectively, but how the burr 95 extends depends on the shape, material, and lower electrode 97 of the first and second tubular members 70 and 71. Depending on how the first tubular member 70 and the second tubular member 71 are pressurized by the upper electrode 98 and the like, only one of the burrs 95 and 96 may extend. Therefore, it is investigated in advance how the burrs 95 and 96 extend, and if only one of the burrs 95 and 96 extends, the burr accommodation space is provided only on the side where the burrs 95 extend. May be formed.

また、上記実施形態では、第１及び第２バリ収容空間部９１，９２のうち第１バリ収容空間部９１の内壁面にしか突起部８１を設けていないが、バリ９５，９６が共に多く延出する場合には、第１及び第２バリ収容空間部９１，９２の両方の内壁面に、突起部８１のような偏向部を形成してもよい。 Further, in the above embodiment, the protrusion 81 is provided only on the inner wall surface of the first burr accommodating space 91 among the first and second burr accommodating spaces 91 and 92, but both burrs 95 and 96 are extended. When it is taken out, a deflection portion such as a protrusion 81 may be formed on the inner wall surfaces of both the first and second burr accommodating space portions 91 and 92.

さらに、上記実施形態では、突起部８１を、第１筒状部材７０の径方向延設部７０ｄの後側の面に設けたが、例えば図６に示すように、第１筒状部材７０の軸方向延設部７０ｃと第２筒状部材７１の大径部７１ｃとにそれぞれ突起部８１を設けるようにしてもよい。 Further, in the above embodiment, the protrusion 81 is provided on the rear surface of the radial extension portion 70d of the first tubular member 70, but as shown in FIG. 6, for example, the first tubular member 70 Protrusions 81 may be provided on the axially extending portion 70c and the large diameter portion 71c of the second tubular member 71, respectively.

また、偏向部としては、突起部８１には限られず、図７に示すように、第１バリ収容空間部９１の内壁面に対して凹む凹部８２で構成することも可能である。図７の例では、偏向部は、大径部７１ｃ（前側に向かって徐々に大径となる部分）に設けられた突起部８１と、第１筒状部材７０における軸方向延設部７０ｃと径方向延設部７０ｄとの境界部分に設けられた凹部８２とで構成されている。図７の例では、バリ９５が接合部７０ａ，７１ａから大径部７１ｃの径方向内側面に沿って延出する場合に、有効である。バリ９５が接合部７０ａ，７１ａから軸方向延設部７０ｃの径方向外側の面に沿って延出する場合には、偏向部は、第１筒状部材７０における軸方向延設部７０ｃと径方向延設部７０ｄとの境界部分に設けられた凹部８２のみで構成することも可能である。上記のような凹部８２は、切削により形成する。 Further, the deflection portion is not limited to the protrusion 81, and as shown in FIG. 7, it is also possible to form a recess 82 recessed with respect to the inner wall surface of the first burr accommodating space 91. In the example of FIG. 7, the deflection portion includes a protrusion 81 provided on the large diameter portion 71c (a portion whose diameter gradually increases toward the front side) and an axially extending portion 70c in the first tubular member 70. It is composed of a recess 82 provided at a boundary portion with the radial extension portion 70d. In the example of FIG. 7, it is effective when the burr 95 extends from the joint portions 70a and 71a along the radial inner side surface of the large diameter portion 71c. When the burr 95 extends from the joint portions 70a and 71a along the radial outer surface of the axial extension portion 70c, the deflection portion has a diameter with the axial extension portion 70c in the first tubular member 70. It is also possible to configure only the recess 82 provided at the boundary portion with the directional extension portion 70d. The recess 82 as described above is formed by cutting.

上述の実施形態は単なる例示に過ぎず、本発明の範囲を限定的に解釈してはならない。本発明の範囲は請求の範囲によって定義され、請求の範囲の均等範囲に属する変形や変更は、全て本発明の範囲内のものである。 The above embodiments are merely examples, and the scope of the present invention should not be construed in a limited manner. The scope of the present invention is defined by the scope of claims, and all modifications and modifications belonging to the equivalent scope of the claims are within the scope of the present invention.

本発明は、互いに圧入されかつ電気抵抗接合された接合部がそれぞれ設けられた第１部材及び第２部材を備えた電気抵抗圧入接合構造に有用である。 The present invention is useful for an electrically resistance press-fitting structure including a first member and a second member each provided with a joint that is press-fitted and electrically resistance-bonded to each other.

５ クラッチドラム
６ クラッチドラム
７ クラッチドラム
５０ 第１筒状部材（第１部材）
５０ａ 接合部
５１ 第２筒状部材（第２部材）
５１ａ 接合部
６０ 第１筒状部材（第１部材）
６０ａ 接合部
６１ 第２筒状部材（第２部材）
６１ａ 接合部
７０ 第１筒状部材（第１部材）
７０ａ 接合部
７０ｇ 当接部
７１ 第２筒状部材（第２部材）
７１ａ 接合部
７１ｆ 当接部
８１ 突起部（偏向部）
８２ 凹部（偏向部）
９１ 第１バリ収容空間部
９２ 第２バリ収容空間部
９５ バリ
９６ バリ 5 Clutch drum 6 Clutch drum 7 Clutch drum 50 1st tubular member (1st member)
50a Joint 51 Second tubular member (second member)
51a Joint 60 1st tubular member (1st member)
60a Joint 61 Second tubular member (second member)
61a Joint 70 1st tubular member (1st member)
70a Joint 70g Contact 71 Second tubular member (second member)
71a Joint 71f Contact 81 Protrusion (deflection)
82 Recess (deflecting part)
91 1st burr accommodation space 92 2nd burr accommodation space 95 burr 96 burr

Claims (4)

互いに圧入されかつ電気抵抗接合された接合部がそれぞれ設けられた第１部材及び第２部材を備えた電気抵抗圧入接合構造であって、
上記第１部材及び上記第２部材の間における上記接合部の近傍に、該接合部から延出したバリを収容するバリ収容空間部が設けられ、
上記バリ収容空間部は、上記第１部材及び上記第２部材にそれぞれ設けられた当接部が、上記接合部の圧入により互いに当接することによって閉じられるように構成されており、
上記バリ収容空間部の内壁面に、上記接合部の圧入の進行に伴って該接合部から延出する上記バリの延出方向を、上記第１部材及び上記第２部材の当接部に向かわないように偏向する偏向部が形成されていることを特徴とする電気抵抗圧入接合構造。 It is an electric resistance press-fitting joint structure including a first member and a second member each having a joint portion press-fitted and electrically resistance-bonded to each other.
A burr accommodating space for accommodating burrs extending from the joint is provided in the vicinity of the joint between the first member and the second member.
The burr accommodating space portion is configured so that the contact portions provided on the first member and the second member are closed by abutting each other by press-fitting the joint portion.
On the inner wall surface of the burr accommodating space portion, the extension direction of the burr extending from the joint portion as the press-fitting of the joint portion progresses is directed toward the contact portion of the first member and the second member. An electric resistance press-fitting joint structure characterized in that a deflection portion that deflects so as not to occur is formed. 請求項１記載の電気抵抗圧入接合構造において、
上記偏向部は、上記バリ収容空間部の内壁面に対して突出した突起部で構成されていることを特徴とする電気抵抗圧入接合構造。 In the electric resistance press-fitting joint structure according to claim 1,
The deflection portion is an electric resistance press-fitting joint structure characterized in that it is composed of a protrusion portion protruding from the inner wall surface of the burr accommodating space portion. 請求項１記載の電気抵抗圧入接合構造において、
上記偏向部は、上記バリ収容空間部の内壁面に対して凹む凹部で構成されていることを特徴とする電気抵抗圧入接合構造。 In the electric resistance press-fitting joint structure according to claim 1,
The deflecting portion is an electric resistance press-fitting joint structure characterized in that it is formed of a recess recessed with respect to the inner wall surface of the burr accommodating space portion. 請求項１記載の電気抵抗圧入接合構造において、
上記偏向部は、上記バリ収容空間部の内壁面に対して突出した突起部と、該内壁面に対して凹む凹部とで構成されていることを特徴とする電気抵抗圧入接合構造。 In the electric resistance press-fitting joint structure according to claim 1,
The deflecting portion is an electric resistance press-fitting joint structure characterized in that it is composed of a protrusion protruding with respect to the inner wall surface of the burr accommodating space portion and a concave portion recessed with respect to the inner wall surface.

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