JPH0452896B2 - - Google Patents
Info
- Publication number
- JPH0452896B2 JPH0452896B2 JP59079841A JP7984184A JPH0452896B2 JP H0452896 B2 JPH0452896 B2 JP H0452896B2 JP 59079841 A JP59079841 A JP 59079841A JP 7984184 A JP7984184 A JP 7984184A JP H0452896 B2 JPH0452896 B2 JP H0452896B2
- Authority
- JP
- Japan
- Prior art keywords
- gear
- speedometer
- differential case
- drive gear
- flange portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/0018—Shaft assemblies for gearings
- F16H57/0025—Shaft assemblies for gearings with gearing elements rigidly connected to a shaft, e.g. securing gears or pulleys by specially adapted splines, keys or methods
-
- 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
- F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
- F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P1/00—Details of instruments
- G01P1/04—Special adaptations of driving means
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Gears, Cams (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、トランスミツシヨンのデフケースに
対するスピードメータドライブギアの固定構造に
関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a structure for fixing a speedometer drive gear to a differential case of a transmission.
（従来技術）
従来、前輪駆動車用トランスミツシヨンのデフ
ケースに対するスピードメータドライブギアの固
定構造では、例えば第１，２図に示すスピードメ
ータドライブギアを使用した特開昭58−137763号
公報にのものが知られている。(Prior Art) Conventionally, in a structure for fixing a speedometer drive gear to a differential case of a transmission for a front wheel drive vehicle, for example, the structure disclosed in Japanese Patent Application Laid-open No. 137763-1980 uses the speedometer drive gear shown in FIGS. 1 and 2. something is known.
第１図において、スピードメータドライブギア
１はドリブンギア９と噛み合うギア部２を外周に
形成したギア本体３の外側端にフランジ部４を一
体に形成し、このフランジ部４をデフケース５に
形成した環状段付部６の小径側端面７に係着させ
て軸方向の動きを規制し、更にギア本体２の内周
面に嵌合突起８を一体に形成し、デフケース５の
溝に嵌め入れることでギア回り止めを行なつてい
る。 In FIG. 1, the speedometer drive gear 1 has a flange 4 integrally formed on the outer end of a gear body 3 which has a gear portion 2 formed on its outer periphery that engages with a driven gear 9, and this flange 4 is formed on a differential case 5. It is engaged with the small-diameter side end surface 7 of the annular stepped part 6 to restrict its movement in the axial direction, and furthermore, a fitting protrusion 8 is integrally formed on the inner peripheral surface of the gear body 2, and the fitting protrusion 8 is fitted into the groove of the differential case 5. The gear is stopped from rotating.
しかしながら、このような従来のギア固定構造
にあつては、デフケース５にギアを回り止めする
嵌合突起８のギア本体３に対する根元部分８ａに
応力集中を起し、使用中にギア本体３からギア部
２に至るクラツク１０を生じてギアが破損してし
まうという問題があつた。 However, in such a conventional gear fixing structure, stress concentration occurs at the root portion 8a of the fitting protrusion 8 that prevents the gear from rotating on the differential case 5 relative to the gear body 3, and the gear is removed from the gear body 3 during use. There was a problem in that a crack 10 was generated leading to the gear part 2, resulting in damage to the gear.
（発明の目的）
本発明は、このような従来の問題点に鑑みてな
されたもので、デフケースに対する嵌合突起の嵌
め込みで回り止めを行なつても応力集中によるギ
アクラツクを起さないようにした耐久性の高いス
ピードメータドライブギアの固定構造を提供する
ことを目的とする。(Purpose of the Invention) The present invention has been made in view of such conventional problems, and has an object to prevent gear cracking due to stress concentration even when rotation is prevented by fitting a fitting protrusion into a differential case. The purpose is to provide a highly durable fixing structure for a speedometer drive gear.
（発明の構成）
この目的を達成するため本発明は、トランスミ
ツシヨンのフアイナルギアと一体に回転するデフ
ケースの環状段付部に嵌合されてスピードメータ
ドリブンギアを駆動するスピードメータドライブ
ギアの固定構造において、スピードメータドライ
ブギアの外側面全周にデフケースの端面に係着す
るフランジ部を一体に形成し、応力集中を起こす
ギア内周面を外したフランジ部に１または複数の
嵌合突起を形成し、この嵌合突起をデフケースの
溝に嵌着して回り止めするようにしたものであ
る。(Structure of the Invention) To achieve this object, the present invention provides fixation of a speedometer drive gear that is fitted into an annular stepped portion of a differential case that rotates together with a final gear of a transmission to drive a speedometer driven gear. In terms of structure, a flange part that engages with the end face of the differential case is integrally formed around the entire outer surface of the speedometer drive gear, and one or more fitting protrusions are provided on the flange part from which the inner peripheral surface of the gear, which causes stress concentration, is removed. The fitting protrusion is fitted into the groove of the differential case to prevent rotation.
（実施例）
第３図は本発明の一実施例を示した断面図であ
り、第４図にギアの右側面図を示す。尚、第３図
は第４図の−断面となる。(Embodiment) FIG. 3 is a sectional view showing an embodiment of the present invention, and FIG. 4 is a right side view of the gear. Note that FIG. 3 is a - cross section of FIG. 4.
まず、構成を説明すると、１２は本発明の固定
構造に用いるスピードメータドライブギアであ
り、スピードメータドライブギア１２は外周にギ
ア部１４を形成し、このギア部１４に直交する方
向からスピードメータドリブンギア２３が噛み合
される。ギア部１４を外周に形成したギア本体１
５の外側端にはフランジ部１６が一体に形成さ
れ、フランジ部１６の内側端の２か所に軸方向に
突出した回り止め用の嵌合突起１８を一体に形成
している。このように、フランジ部１６の内側面
に嵌合突起１８を形成したスピードメータドライ
ブギア１２は、耐熱摩耗性の合成樹脂材料、例え
ばナイロン６６の射出成形をもつて作り出されて
いる。 First, to explain the configuration, 12 is a speedometer drive gear used in the fixed structure of the present invention, the speedometer drive gear 12 has a gear part 14 formed on the outer periphery, and the speedometer driven Gear 23 is engaged. Gear body 1 with gear portion 14 formed on the outer periphery
A flange portion 16 is integrally formed on the outer end of the flange portion 5, and fitting protrusions 18 for preventing rotation that protrude in the axial direction are integrally formed at two locations on the inner end of the flange portion 16. As described above, the speedometer drive gear 12 having the fitting protrusion 18 formed on the inner surface of the flange portion 16 is manufactured by injection molding of a heat-wear-resistant synthetic resin material such as nylon 66.
次に、スピードメータドライブギア１２のデフ
ケース５に対する固定構造としては、デフケース
５の環状段付部６にギア本体１５の内周面を嵌め
入れ、更に環状段付部６の２か所にはフランジ部
１６の嵌合突起１８が嵌り合う溝２０が形成され
ており、この溝２０に嵌合突起１８を軸方向から
嵌め入れ、更にデフケース５の小径軸部２１に嵌
着したベアリング２２の内環２２ａの押接でスピ
ードメータドライブギア１２の外側端に一体に形
成したフランジ部１６に内側面をデフケース５の
小径軸部２１に至る側端に係着させ、軸方向の動
きを規制している。 Next, as a structure for fixing the speedometer drive gear 12 to the differential case 5, the inner peripheral surface of the gear body 15 is fitted into the annular stepped portion 6 of the differential case 5, and flanges are fitted at two locations on the annular stepped portion 6. A groove 20 is formed in which the fitting projection 18 of the portion 16 fits, and the fitting projection 18 is fitted into this groove 20 from the axial direction, and the inner ring of the bearing 22 fitted to the small diameter shaft portion 21 of the differential case 5 is inserted into the groove 20. 22a, the inner surface of the flange portion 16 formed integrally with the outer end of the speedometer drive gear 12 is engaged with the side end of the differential case 5 reaching the small diameter shaft portion 21, thereby regulating movement in the axial direction. .
次に作用を説明すると、フアイナルギアによる
デフケース５の回転は、嵌合突起１８の嵌着で回
り止めしたスピードメータドライブギア１２に伝
達され、スピードメータドライブギア１２は直交
する方向から噛み合つているスピードメータドリ
ブンギア２３を回転駆動し、スピードメータドリ
ブンギア２３に連結したスピードメータワイヤー
ケーブルにより速度表示のための回転を取り出し
ている。 Next, to explain the operation, the rotation of the differential case 5 by the final gear is transmitted to the speedometer drive gear 12 which is stopped from rotating by the fitting of the fitting protrusion 18, and the speedometer drive gear 12 is engaged from the orthogonal direction. The speedometer driven gear 23 is rotationally driven, and the rotation for speed display is taken out by a speedometer wire cable connected to the speedometer driven gear 23.
このようなデフケース５によるスピードメータ
ドライブギア１２の駆動状態において、スピード
メータドライブギア１２に対する応力集中はギア
部１４とスピードメータドリブンギア２３との噛
み合い部分で生じ、この噛み合い部分でデフケー
ス５の回転でギア本体１５の内側は回転方向に引
かれ、一方、スピードメータドリブンギア２３が
噛み合つたギア部１４の部分は反対方向の力を受
ける。また、寒冷時においてドライブギアが収縮
することによりギア内面に引つ張り応力が発生し
回り止め部に応力集中が起こり、第１図に示すよ
うなクラツク１０が発生する。このようなスピー
ドメータドリブンギア２３との噛み合い部分にお
ける円周方向の引つ張り応力に対し、本発明のス
ピードメータドライブギア１２ではデフケース５
に対するギア本体１５の内周面を外れた位置、即
ちフランジ１６の内側面に回り止め用の嵌合突起
１８を形成しているため、スピードメータドリブ
ンギア２３の噛み合い部分においてギア本体１５
及びギア部１４に生ずる円周方向の応力はフラン
ジ部１６の嵌合突起１８に作用せず、嵌合突起１
８に対する応力集中を防ぐことでクラツクの発生
を防止する。 In such a state where the speedometer drive gear 12 is driven by the differential case 5, stress concentration on the speedometer drive gear 12 occurs at the meshing portion between the gear portion 14 and the speedometer driven gear 23, and at this meshing portion, the rotation of the differential case 5 causes stress concentration on the speedometer drive gear 12. The inside of the gear body 15 is pulled in the rotational direction, while the portion of the gear portion 14 that is engaged with the speedometer driven gear 23 receives a force in the opposite direction. Furthermore, when the drive gear contracts in cold weather, tensile stress is generated on the inner surface of the gear, stress concentration occurs in the rotation stopper, and a crack 10 as shown in FIG. 1 occurs. In response to such tensile stress in the circumferential direction at the meshing portion with the speedometer driven gear 23, the speedometer drive gear 12 of the present invention
Since the fitting protrusion 18 for preventing rotation is formed at a position away from the inner circumferential surface of the gear body 15, that is, on the inner surface of the flange 16, the gear body 15 is formed at a position where the gear body 15 engages with the speedometer driven gear 23.
The stress in the circumferential direction generated in the gear portion 14 does not act on the fitting protrusion 18 of the flange portion 16;
By preventing stress concentration on 8, the occurrence of cracks is prevented.
第５，６図は本発明の他の実施例を示し、第５
図は第６図の−断面となる。 5 and 6 show other embodiments of the present invention;
The figure is a - cross section of FIG. 6.
この実施例は、スピードメータドライブギア１
２の外側面に形成したフランジ部１６の内周径方
向に一対の嵌合突起１８を形成したことを特徴と
し、この実施例においてもスピードメータドリブ
ンギア２３との噛み合いで周方向の応力を受ける
ギア本体１５の内周面を外れた位置に嵌合突起１
８が設けられているため、嵌合突起１８に対する
応力集中がなく、嵌合突起１８の根元からのクラ
ツクによるギア破損を確実に防止することができ
る。 In this embodiment, speedometer drive gear 1
A pair of fitting protrusions 18 are formed in the radial direction of the inner circumference of the flange portion 16 formed on the outer surface of the speedometer driven gear 23, and this embodiment also receives stress in the circumferential direction due to engagement with the speedometer driven gear 23. A fitting protrusion 1 is provided at a position off the inner peripheral surface of the gear body 15.
8, there is no stress concentration on the fitting protrusion 18, and damage to the gear due to cracking from the base of the fitting protrusion 18 can be reliably prevented.
尚、上記の実施例はフランジ部の２か所に回り
止め用の嵌合突起を設けていたが、嵌合突起は１
か所でもよいし、また２か所以上であつてもよ
い。 In addition, in the above embodiment, fitting protrusions for preventing rotation were provided at two locations on the flange portion, but there is only one fitting protrusion.
It may be in one place or in two or more places.
（発明の効果）
以上説明してきたように本発明によれば、トラ
ンスミツシヨンのフアイナルギアと一体に回転す
るデフケースの環状段付部に嵌合されてスピード
メータドリブンギアを駆動するスピードメータド
ライブギアの固定構造において、スピードメータ
ドライブギアの外端面全周にデフメースに係着す
るフランジ部を一体に形成すると共に、フランジ
部の内側面または内周面にデフケースの溝に嵌着
してギアを回り止めする１または複数の嵌合突起
を形成するようにしたため、スピードメータドリ
ブンギアの噛み合い部分で発生する応力を直接受
けないフランジ部の位置に嵌合突起が設けられて
いるため、嵌合突起に対する応力集中を防いで嵌
合突起の付け根部分からのクラツクの発生をなく
し、長期間使用してもギア破損を起こすことのな
い耐久性と信頼性の高いスピードメータドライブ
ギアの固定構造を得ることができる。(Effects of the Invention) As described above, according to the present invention, the speedometer drive gear is fitted into the annular stepped portion of the differential case that rotates integrally with the final gear of the transmission to drive the speedometer driven gear. In this fixing structure, a flange portion that engages with the differential gear is integrally formed around the outer end surface of the speedometer drive gear, and a flange portion that engages with the differential case is integrally formed on the inner surface or inner peripheral surface of the flange portion, and a flange portion that fits into the groove of the differential case and rotates the gear. Since one or more fitting protrusions are formed for stopping, the fitting protrusions are provided at positions on the flange that do not directly receive the stress generated at the meshing part of the speedometer driven gear. It is possible to obtain a highly durable and reliable speedometer drive gear fixing structure that prevents stress concentration and eliminates the occurrence of cracks from the base of the mating protrusion, and does not cause gear damage even after long-term use. can.
第１，２図は従来例で用いるスピードメータド
ライブギアを示した説明図、第３，４図は本発明
の一実施例を示した説明図、第５，６図は本発明
の他の実施例を示した説明図である。
５：デフケース、６：環状段付部、１２：スピ
ードメータドライブギア、１４：ギア部、１５：
ギア本体、１６：フランジ部、１８：嵌合突起、
２０：溝、２１：小径軸部、２２：ベアリング、
２２ａ：ベアリング内環、２３：スピードメータ
ドリブンギア。
Figures 1 and 2 are explanatory diagrams showing a speedometer drive gear used in a conventional example, Figures 3 and 4 are explanatory diagrams showing one embodiment of the present invention, and Figures 5 and 6 are illustrations of another embodiment of the present invention. It is an explanatory diagram showing an example. 5: Differential case, 6: Annular stepped part, 12: Speedometer drive gear, 14: Gear part, 15:
Gear body, 16: flange part, 18: fitting protrusion,
20: groove, 21: small diameter shaft section, 22: bearing,
22a: Bearing inner ring, 23: Speedometer driven gear.
Claims (1)
に回転するデフケースの環状段付部に嵌合されて
スピードメータドリブンギアを駆動するスピード
メータドライブギアの固定構造において、 前記スピードメータドライブギアの外端面全周
に前記デフケースに係着するフランジ部を一体に
形成すると共に、該フランジ部の内側面又は内周
面に前記デフケースの溝に嵌着してギアを回り止
めする１または複数の嵌合突起を形成したことを
特徴とするスピードメータドライブギアの固定構
造。[Scope of Claims] 1. A fixed structure for a speedometer drive gear that is fitted into an annular stepped portion of a differential case that rotates together with a final gear of a transmission to drive a speedometer driven gear, comprising: A flange portion that engages with the differential case is integrally formed around the entire outer end surface of the flange portion, and one or more flange portions that fit into the grooves of the differential case to prevent rotation of the gear are formed on the inner surface or inner peripheral surface of the flange portion. A speedometer drive gear fixing structure characterized by forming a fitting protrusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59079841A JPS60224072A (en) | 1984-04-20 | 1984-04-20 | Fixing construction of speedometer drive gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59079841A JPS60224072A (en) | 1984-04-20 | 1984-04-20 | Fixing construction of speedometer drive gear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60224072A JPS60224072A (en) | 1985-11-08 |
| JPH0452896B2 true JPH0452896B2 (en) | 1992-08-25 |
Family
ID=13701425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59079841A Granted JPS60224072A (en) | 1984-04-20 | 1984-04-20 | Fixing construction of speedometer drive gear |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60224072A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2816126B1 (en) * | 2000-10-31 | 2004-06-18 | Valeo Equip Electr Moteur | ARMATURE SHAFT OF ELECTRIC MOTOR COMPRISING AN OUTLET PINION, AND STARTER OF A MOTOR VEHICLE COMPRISING SUCH AN ARMATURE SHAFT |
-
1984
- 1984-04-20 JP JP59079841A patent/JPS60224072A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60224072A (en) | 1985-11-08 |
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