JPH0314452Y2 - - Google Patents
Info
- Publication number
- JPH0314452Y2 JPH0314452Y2 JP13379684U JP13379684U JPH0314452Y2 JP H0314452 Y2 JPH0314452 Y2 JP H0314452Y2 JP 13379684 U JP13379684 U JP 13379684U JP 13379684 U JP13379684 U JP 13379684U JP H0314452 Y2 JPH0314452 Y2 JP H0314452Y2
- Authority
- JP
- Japan
- Prior art keywords
- case
- output shaft
- case part
- internal gear
- input shaft
- 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
Links
- 238000001514 detection method Methods 0.000 claims description 8
- 238000004804 winding Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Retarders (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Description
【考案の詳細な説明】
(産業上の利用分野)
本考案は、電磁型倍力装置のケース組付構造に
関する。[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a case assembly structure for an electromagnetic booster.
(従来の技術)
自動車等の電動式パワーステアリング装置に利
用される電磁型倍力装置は、内部に入力軸と出力
軸の間のトルク差を検出するトルク検出部、電動
機、遊星歯車減速装置を備える。斯かる電磁型倍
力装置は、複雑な構成物を小型、コンパクトに組
立てる必要があり、信頼性を高く保持するために
は部品点数を少なくすると共に組付誤差を小さく
することが要求される。(Prior Art) An electromagnetic booster used in an electric power steering device for automobiles, etc. has a torque detection section that detects the torque difference between an input shaft and an output shaft, an electric motor, and a planetary gear reduction device inside. Be prepared. Such an electromagnetic booster requires a small and compact assembly of complex components, and in order to maintain high reliability, it is required to reduce the number of parts and minimize assembly errors.
(考案が解決しようとする問題点)
従来の電磁型倍力装置においては、一般に部品
点数が多く前記要求を満足することができなかつ
た。而して本考案は、部品点数を少なくし、これ
によつて組付誤差を減少した電磁型倍力装置を提
供するものである。(Problems to be Solved by the Invention) Conventional electromagnetic boosters generally have a large number of parts and cannot satisfy the above requirements. Accordingly, the present invention provides an electromagnetic booster with a reduced number of parts, thereby reducing assembly errors.
(問題点を解決するための手段)
本考案は、トルク検出部を収納する第1ケース
部と電動機、遊星歯車減速装置を収納する筒状の
第2ケース部とからケースを形成し、第2ケース
部の内面の軸方向に少なくとも2ケ所に段部を形
成し、上記第1ケース部と上記遊星歯車減速装置
の内歯車部材を上記第2ケース部にそれぞれ両側
の外方から嵌入し且つそれぞれの内側縁を上記各
段部に当接させ、更に軸方向に長形のボルトを少
なくとも2本配設し、上記第1ケース部と上記内
歯車部材を結合して一体化する如く構成した。(Means for Solving the Problems) The present invention forms a case from a first case part that houses a torque detection section and a cylindrical second case part that houses an electric motor and a planetary gear reduction device. step portions are formed in at least two places in the axial direction on the inner surface of the case portion, and the first case portion and the internal gear member of the planetary gear reduction gear are fitted into the second case portion from the outside of both sides, respectively; The inner edge of the housing is brought into contact with each of the stepped portions, and at least two long bolts are disposed in the axial direction to connect and integrate the first case portion and the internal gear member.
(実施例)
以下に本考案の好適一実施例を添付図面に基づ
いて説明する。(Embodiment) A preferred embodiment of the present invention will be described below with reference to the accompanying drawings.
第1図において、1は入力軸であり、2は出力
軸である。入力軸1は第1ケース部たるステアリ
ングコラム3の内面に固設された軸受4で回転自
在に設けられ、その外端にステアリングホイール
が取り付けられる。一方出力軸2は軸受5及び後
述する電動機6の回転子7の筒軸8との間に介設
された軸受9,10で回転自在に設けられる。出
力軸2の外端は、車輪側の他の軸と連結すべくス
プライン2aが形成されている。 In FIG. 1, 1 is an input shaft, and 2 is an output shaft. The input shaft 1 is rotatably provided on a bearing 4 fixed to the inner surface of a steering column 3, which is a first case part, and a steering wheel is attached to the outer end of the input shaft 1. On the other hand, the output shaft 2 is rotatably provided by bearings 9 and 10 interposed between a bearing 5 and a cylindrical shaft 8 of a rotor 7 of an electric motor 6, which will be described later. A spline 2a is formed at the outer end of the output shaft 2 to connect it to another shaft on the wheel side.
入力軸1と出力軸2の各内端部は、入力軸1の
内端が出力軸2の内端の孔部に軸受11を介設し
て挿入され、回転自在な取付関係にある。また、
入力軸1と出力軸2の対向の内端部はトーシヨン
バー12で連結される。このような構造により、
入力軸1に対して外部から回転トルクが加わる
と、この回転トルクはトーシヨンバー12を介し
て出力軸2に伝達する。このとき入力軸1に加え
る回転トルクと出力軸2に加わる負荷の差に応じ
てトーシヨンバー12には捩れが生じる。 The inner ends of the input shaft 1 and the output shaft 2 are in a rotatable mounting relationship, with the inner end of the input shaft 1 being inserted into a hole in the inner end of the output shaft 2 with a bearing 11 interposed therebetween. Also,
Opposing inner ends of the input shaft 1 and the output shaft 2 are connected by a torsion bar 12 . With this structure,
When rotational torque is applied to the input shaft 1 from the outside, this rotational torque is transmitted to the output shaft 2 via the torsion bar 12. At this time, torsion bar 12 is twisted depending on the difference between the rotational torque applied to input shaft 1 and the load applied to output shaft 2.
上記入力軸1と出力軸2とが嵌合関係にある部
分の周囲にはトルク検出部13が設けられる。こ
のトルク検出部13は、ステアリングコラム3の
内面に固設された差動変圧器14と、この差動変
圧器14に対して、入力軸1と出力軸2の間で相
対的角度差が生じたときに中央位置より左右方向
に移動する可動部15とから構成される。すなわ
ち、入力軸1と出力軸2の間のトルク差を、トー
シヨンバー12の捩り、更には可動部15の軸方
向の移動に変換して検出するものである。 A torque detection section 13 is provided around a portion where the input shaft 1 and output shaft 2 are in a fitting relationship. The torque detection unit 13 is connected to a differential transformer 14 fixed to the inner surface of the steering column 3, and a relative angle difference occurs between the input shaft 1 and the output shaft 2 with respect to the differential transformer 14. It is composed of a movable part 15 that moves laterally from the center position when That is, the torque difference between the input shaft 1 and the output shaft 2 is converted into the torsion of the torsion bar 12 and further the movement of the movable part 15 in the axial direction and detected.
また第2ケース部たる円筒状のケース部16内
に配設される6は前述の電動機であり、18は2
段の遊星歯車機構18A,18Bから成る遊星歯
車正転減速装置である。 Further, 6 disposed in the cylindrical case part 16 which is the second case part is the aforementioned electric motor, and 18 is the 2
This is a planetary gear normal rotation speed reduction device consisting of a stage planetary gear mechanism 18A, 18B.
電動機6は、ケース16をヨークとして使用
し、ケース16の内面の対称位置に配設された一
対の磁石19,19と、出力軸2に対して同心状
に設けられた前記回転子7とから構成される。回
転子7は、筒軸8が前記軸受9,10と、減速装
置の内歯車部材20に固設された軸受21によつ
て回転自在に設けられ、上記筒軸8に鉄芯22と
回転子巻線23が取り付けられる。回転子巻線2
3の両端子は整流子24に結線され、この整流子
24には電機子電流を供給すべくブラシ25が圧
接されている。 The electric motor 6 uses a case 16 as a yoke, and includes a pair of magnets 19, 19 arranged at symmetrical positions on the inner surface of the case 16, and the rotor 7 arranged concentrically with respect to the output shaft 2. configured. The rotor 7 is provided with a cylindrical shaft 8 rotatably provided by the bearings 9 and 10 and a bearing 21 fixed to the internal gear member 20 of the reduction gear, and the cylindrical shaft 8 is provided with an iron core 22 and the rotor. Winding 23 is attached. Rotor winding 2
Both terminals of the armature 3 are connected to a commutator 24, and a brush 25 is pressed into contact with the commutator 24 to supply armature current.
前記減速装置18において、前段の遊星歯車機
構18Aは、前記筒軸8の左端に形成された歯車
26を太陽歯車とし、該歯車26と内歯車20a
の間に噛合される遊星歯車27…とから成る。遊
星歯車27…はキヤリア部材28に回転自在に取
り付けられる。後段の遊星歯車機構18Bは、キ
ヤリヤ部材28に形成された歯車29を太陽歯車
とし、内歯車20a、及びこれらの歯車の間に噛
合された遊星歯車30…とから成る。遊星歯車3
0…は、ネジ31で出力軸2に固定されたキヤリ
ヤ部材32に回転自在に取り付けられる。 In the speed reduction device 18, the planetary gear mechanism 18A at the front stage has a gear 26 formed at the left end of the cylindrical shaft 8 as a sun gear, and a gear 26 and an internal gear 20a.
It consists of planetary gears 27 meshed between. The planetary gears 27 are rotatably attached to the carrier member 28. The planetary gear mechanism 18B in the latter stage includes a gear 29 formed on the carrier member 28 as a sun gear, an internal gear 20a, and planetary gears 30 meshed between these gears. Planetary gear 3
0... are rotatably attached to a carrier member 32 fixed to the output shaft 2 with screws 31.
上記において、内歯車20aが遊星歯車機構1
8A,18Bのいずれかに対しても共用され、ま
た内歯車部材20の内側端面に絶縁部材33を介
して前記ブラシ25が取り付けられる。この内歯
車部材20はケース16の左側開口部から挿入さ
れて配設され、ネジ34,35で固定される。更
にケース16の左端には上記ネジ34,35で蓋
体36が一緒に取り付けられる。 In the above, the internal gear 20a is the planetary gear mechanism 1
8A and 18B, and the brush 25 is attached to the inner end surface of the internal gear member 20 via an insulating member 33. The internal gear member 20 is inserted into the left side opening of the case 16 and fixed with screws 34 and 35. Furthermore, a lid 36 is attached to the left end of the case 16 using the screws 34 and 35 mentioned above.
上記構成によれば、入力軸1にトルクが加わる
と、入力軸1と出力軸2のトルク差をトルク検出
部13で検出し、当該トルク差に応じて電動機6
を所要の回転方向、回転トルクで作動する。電動
機6で生じたトルクは遊星歯車機構18A,18
Bで減速され出力軸2に付与され、出力軸2には
倍力されたトルクが発生する。 According to the above configuration, when torque is applied to the input shaft 1, the torque detection section 13 detects the torque difference between the input shaft 1 and the output shaft 2, and the electric motor 6
is operated in the required rotational direction and rotational torque. The torque generated by the electric motor 6 is transmitted to the planetary gear mechanism 18A, 18.
The torque is decelerated at B and applied to the output shaft 2, and a boosted torque is generated on the output shaft 2.
以上において、ステアリングコラム3の左端部
にはフランジ3aが形成され、このフランジ3a
は前記軸受5を支持する環状の端面板17に当接
される。またケース16においては、その右端周
縁の内側の位置及び左側部に段部16a,16b
を形成する。そして前記電磁型倍力装置を組み付
ける際には、ケース16の左側開口部より内歯車
部材20を段部16bに当接するまで挿入し、一
方ケース16の右側開口部より端面板17及びフ
ランジ3aを段部16aに当接させ、端面板17
及びフランジ3aの外方より孔37を介してボル
ト38を挿通し、内歯車部材20に形成したフラ
ンジ3aの外方より孔37を介してボルト38を
挿通し、内歯車部材20に形成したネジ孔20b
にボルト38を螺合して締付け一体化する。ボル
ト38は、少なくとも2本のボルトが対称的位置
に設けられる。 In the above, the flange 3a is formed at the left end of the steering column 3, and the flange 3a
is in contact with an annular end plate 17 that supports the bearing 5. In addition, in the case 16, there are stepped portions 16a and 16b on the inside of the right end periphery and on the left side.
form. When assembling the electromagnetic booster, the internal gear member 20 is inserted through the left opening of the case 16 until it abuts the stepped portion 16b, and the end plate 17 and the flange 3a are inserted through the right opening of the case 16. The end plate 17 is brought into contact with the stepped portion 16a.
A bolt 38 is inserted from the outside of the flange 3a through the hole 37, and a bolt 38 is inserted from the outside of the flange 3a formed on the internal gear member 20 through the hole 37, thereby forming a screw formed on the internal gear member 20. Hole 20b
Screw the bolts 38 on and tighten to integrate. At least two bolts 38 are provided at symmetrical positions.
斯くの如き組付構造によれば、ステアリングコ
ラム3の内部に入力軸1及びトルク検出部13を
収納し、一方ケース16の内部に出力軸2、電動
機6、減速装置18を収納して減速装置18の内
歯車部材20とステアリングコラム3のフランジ
3aとの間にボルト38,38を設けるだけで組
付けることができる。 According to such an assembly structure, the input shaft 1 and the torque detection section 13 are housed inside the steering column 3, while the output shaft 2, the electric motor 6, and the reduction gear 18 are housed inside the case 16, so that the reduction gear It can be assembled by simply providing bolts 38, 38 between the 18 internal gear members 20 and the flange 3a of the steering column 3.
段部16a,16bの形状としては、例えば第
2図に示す如く、等間隔で打出して3点の突起状
に設けるようにしてもよいし、第3図に示す如く
一定幅を持たせて弦の如く形成することもでき
る。 The shape of the stepped portions 16a and 16b may be, for example, as shown in FIG. 2, as shown in FIG. It can also be shaped like a string.
(考案の効果)
以上の説明で明らかなように本考案によれば、
電磁型倍力装置において電動機と減速装置を同一
ケース内に収納し、且つ減速装置の固定要素であ
る内歯車部材を利用してボルトでケース全体を組
付け一体化したため部品点数を少なくし且つ電動
機と減速装置の間の組付誤差を減少することがで
きると共に、これによつて更に電磁型倍力装置の
信頼性を向上し且つトルク反力を受けやすいケー
ス締結部の機械的強度、剛性を高めることができ
る。(Effect of the invention) As is clear from the above explanation, according to the invention,
In an electromagnetic booster, the electric motor and reduction gear are housed in the same case, and the entire case is assembled and integrated with bolts using the internal gear member that is the fixing element of the reduction gear, reducing the number of parts and reducing the number of parts. It is possible to reduce the assembly error between the drive and the speed reducer, and thereby further improve the reliability of the electromagnetic booster and improve the mechanical strength and rigidity of the case fastening part that is susceptible to torque reaction force. can be increased.
第1図は本考案に係る電磁型倍力装置の縦断面
図であつて中心線において切断面を90゜折曲させ
て形成した縦断面図、第2図,第3図は段部の形
状例を示すA−A線断面図である。
図面中、1は入力軸、2は出力軸、3はステア
リングコラム、6は電動機、12はトーシヨンバ
ー、13はトルク検出部、16はケース、16
a,16bは段部、18は遊星歯車正転減速装
置、20は内歯車部材、38はボルトである。
Fig. 1 is a longitudinal cross-sectional view of the electromagnetic booster according to the present invention, which is obtained by bending the cut plane at 90 degrees at the center line, and Fig. 2 and 3 show the shape of the stepped portion. It is a sectional view taken along the line A-A showing an example. In the drawing, 1 is an input shaft, 2 is an output shaft, 3 is a steering column, 6 is an electric motor, 12 is a torsion bar, 13 is a torque detection section, 16 is a case, 16
Reference numerals a and 16b indicate stepped portions, 18 indicates a planetary gear normal rotation reduction gear, 20 indicates an internal gear member, and 38 indicates a bolt.
Claims (1)
ルク検出部を収納する第1ケース部と、電動機、
遊星歯車減速装置を収納する第2ケース部とから
ケースを形成し、上記第2ケース部の内面の軸方
向に少なくとも2ケ所に段部を形成し、上記第1
ケース部と上記遊星歯車減速装置の内歯車部材を
上記第2ケース部に外方から嵌入し且つそれぞれ
の内側縁を上記各段部に当接させ、軸方向に長形
のボルトを少なくとも2本配し、上記第1ケース
部と上記内歯車部材を結合して一体化したことを
特徴とする電磁型倍力装置のケース組付構造。 a first case part that houses a torque detection part disposed around the engagement part of the input shaft and the output shaft; an electric motor;
A case is formed from a second case part that houses the planetary gear reduction device, stepped parts are formed in at least two places in the axial direction on the inner surface of the second case part,
The case part and the internal gear member of the planetary gear reduction device are fitted into the second case part from the outside, and the inner edges of each are brought into contact with each of the stepped parts, and at least two elongated bolts are inserted in the axial direction. A case assembly structure for an electromagnetic booster, characterized in that the first case part and the internal gear member are coupled and integrated.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13379684U JPH0314452Y2 (en) | 1984-09-03 | 1984-09-03 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13379684U JPH0314452Y2 (en) | 1984-09-03 | 1984-09-03 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6159162U JPS6159162U (en) | 1986-04-21 |
JPH0314452Y2 true JPH0314452Y2 (en) | 1991-03-29 |
Family
ID=30692331
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13379684U Expired JPH0314452Y2 (en) | 1984-09-03 | 1984-09-03 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0314452Y2 (en) |
-
1984
- 1984-09-03 JP JP13379684U patent/JPH0314452Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS6159162U (en) | 1986-04-21 |
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