JPS61143253A - Electric brake booster - Google Patents
Electric brake boosterInfo
- Publication number
- JPS61143253A JPS61143253A JP59264886A JP26488684A JPS61143253A JP S61143253 A JPS61143253 A JP S61143253A JP 59264886 A JP59264886 A JP 59264886A JP 26488684 A JP26488684 A JP 26488684A JP S61143253 A JPS61143253 A JP S61143253A
- Authority
- JP
- Japan
- Prior art keywords
- ball screw
- booster
- piston
- rotor
- electric motor
- 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.)
- Granted
Links
- 230000033001 locomotion Effects 0.000 abstract description 8
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000000881 depressing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Landscapes
- Braking Systems And Boosters (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明はブレーキ倍力装置にかかり、特に、電動機と
、その回転力を軸力に変換するボールねじとを利用する
ことによって装置自体の小形化に寄与し得る電動式ブレ
ーキ倍力装置に関するものである。[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a brake booster, and in particular, the device itself can be made smaller by using an electric motor and a ball screw that converts the rotational force of the electric motor into axial force. The present invention relates to an electric brake booster that can contribute to the development of new technologies.
［従来の技術］
従来の自動車用のブレーキ倍力装置は、真空式倍力装置
や油圧式倍力装置が知られている。真空式倍力装置にあ
っては、その圧力源として負の空気圧を用いるため、大
きな圧力を（ｑるためにば軸装置自体が大きくなり、ま
た油圧式倍力装置にあっては、その圧力源に大圧力の１
ｑられる油圧を用いるため小形化は可能であるが、いず
れにしてもこれらの倍力装置はそのイ８力比が固定的な
ものであった。[Prior Art] As conventional brake boosters for automobiles, vacuum boosters and hydraulic boosters are known. Vacuum boosters use negative air pressure as their pressure source, so the shaft device itself becomes large in order to generate large pressures, and hydraulic boosters use negative air pressure as their pressure source. 1 of large pressure at the source
However, in any case, these boosters had a fixed force ratio.
そこで、倍力比を任意に変えることのできる可変式の倍
力装置の開発に力が注がれており、その−例として油圧
式可変倍力装置が知られている。Therefore, efforts are being made to develop variable boosters that can arbitrarily change the boost ratio, and a hydraulic variable booster is known as an example of this.
この油圧式可変倍力装置は、油圧制御弁で調整された油
圧を倍力装置に入れて例えば踏力と減速度との関係をコ
ントロールすることによって倍力比を可変とするシステ
ムを採用しており、その制御のために油圧を用いること
は真空や空気圧を用いるのに比べて大きなパワーを得る
ことができ、そのためアクチュエータを小形化すること
ができる構造であった。This hydraulic variable booster uses a system that changes the boost ratio by controlling the relationship between pedal force and deceleration, for example, by inputting hydraulic pressure adjusted by a hydraulic control valve into the booster. By using hydraulic pressure for control, it is possible to obtain greater power than by using vacuum or air pressure, and the structure allows the actuator to be made smaller.
Ｌ発明が解決しようとする問題点］
しかしながら、上述の油圧式可変倍力装置にあっては、
そのアクチュエータを制御するための油圧制御弁や、油
圧源となるポンプや駆動モータが必要であり、アクチュ
エータを小形化できても、油圧源おにび油圧制御弁が大
ぎく、装置全体としての十分な小形化は達成し行ない。L Problems to be Solved by the Invention] However, in the above-mentioned hydraulic variable booster,
A hydraulic control valve to control the actuator, as well as a pump and drive motor that serve as the hydraulic power source, are required. Even if the actuator can be made smaller, the hydraulic power source and hydraulic control valve are too large, making the entire device insufficient. Achieved miniaturization.
さらにこれらの機械的装置をよその構造が複動１であり
、また高価なものであった。Furthermore, the structure of these mechanical devices is double acting and is expensive.
本発明は上述のごとき問題点に鑑みこれらをイｊ効に解
決すべく創案されたものである。したがってその目的は
、簡単な構造であり、装置自体の小形化に奇！：ｉ シ
４％るイ８カ比が可変式の゛心動式プレーキイ８カ装置
を提供することにある。The present invention has been devised in view of the above problems and to effectively solve them. Therefore, the purpose is to have a simple structure, and it is interesting to miniaturize the device itself! An object of the present invention is to provide a heart-pulsating brake key device having a variable ratio of 4%.
［問題点を解決するための手段］
本発明にかかる電動式ブレーキ倍力装置は、電動機とそ
の内周部に位置するロータの内周部にボールねじのナラ
１〜部を嵌めつ（プ、そしてボールねじのボルト部の一
端を油圧発生装置のビス１−ンに当接させ、他％ｉｉを
ブレ−キペダルに連結している。[Means for Solving the Problems] The electric brake booster according to the present invention includes a ball screw whose bore part 1 is fitted into the inner periphery of an electric motor and a rotor located in the inner periphery of the electric motor. One end of the bolt portion of the ball screw is brought into contact with the screw 1 of the hydraulic pressure generator, and the other end is connected to the brake pedal.
［作用］
本発明の電動式ブレーキ倍力装置は、ブレーキペダルの
踏力を軸方向の力として受けるボールねじのポル１〜部
に対して、回転動をスムーズに軸方向の往復動に変換す
ることのできるボールねじを介して、電動機の回転力を
ボールねじのポル１一部に伝達する。ボールねじのポル
１〜部はブレーキペダルから受ける踏力に加えて、電動
機の回転力から変換された軸方向のカを１ｑ、油圧発生
装置に対して大きな軸力を加えることができる。[Operation] The electric brake booster of the present invention smoothly converts rotational motion into reciprocating motion in the axial direction for the pole 1 to portion of the ball screw that receives the depression force of the brake pedal as an axial force. The rotational force of the electric motor is transmitted to a portion of the pole 1 of the ball screw through the ball screw. In addition to the pedal force received from the brake pedal, the ball screw portions 1 to 1 can apply 1q of axial force converted from the rotational force of the electric motor, thereby applying a large axial force to the hydraulic pressure generator.
「発明の実施例］
以下に本発明の好適一実施例について添付図面に従って
説明する。Embodiments of the Invention A preferred embodiment of the present invention will be described below with reference to the accompanying drawings.
第１図は本発明の電動式ブレーキ倍力装置の一実施例を
示す側断面図、第２図は第１図のＩＩ−ＩＩ線で切断し
た半載断面図である。FIG. 1 is a side sectional view showing one embodiment of the electric brake booster of the present invention, and FIG. 2 is a half-mounted sectional view taken along line II--II in FIG. 1.
図示するように、本実施例のプレーキイ８カ装置には電
動機１が用いられている。２はステータであり、その内
周部にはベアリング１４で支持されたロータ３が設けら
れている。ロータ３の内周部には、ロータ３とともに一
体的に回転するボールねじケース４、すなわちボールね
じのナラ１〜部が嵌めつけられている。そして、ボール
ねじケース４の内周部にはボールねじのボルト部として
ピストン５が螺合している。したがって、電動機１の回
転動はボールねじによってピストン５の軸方向への往復
動に変換される。As shown in the figure, an electric motor 1 is used in the eight brake key device of this embodiment. 2 is a stator, and a rotor 3 supported by a bearing 14 is provided on the inner peripheral portion of the stator. A ball screw case 4 that rotates integrally with the rotor 3, that is, a ball screw bore 1 is fitted into the inner peripheral portion of the rotor 3. A piston 5 is screwed into the inner peripheral portion of the ball screw case 4 as a bolt portion of the ball screw. Therefore, the rotational motion of the electric motor 1 is converted into the reciprocating motion of the piston 5 in the axial direction by the ball screw.
ビス１−ン５の一方端にはスプライン軸６がこれと一体
的に動作するよう嵌めつけられており、そのスプライン
軸６は、モータハウジング７に固定されたボールスプラ
インケース８に嵌め合わされている。このことによって
ピストン５はスプライン軸６とともにその回転が阻止さ
れ、軸方向への往復移動のみが許容される。そしてスプ
ライン軸６の先端部は油圧発生装＠（図示せず）のピス
トン９に当接されている。A spline shaft 6 is fitted into one end of the screw 1-5 so as to operate integrally therewith, and the spline shaft 6 is fitted into a ball spline case 8 fixed to the motor housing 7. . This prevents the piston 5 from rotating together with the spline shaft 6, and only reciprocating movement in the axial direction is permitted. The tip of the spline shaft 6 is in contact with a piston 9 of a hydraulic pressure generator (not shown).
一方、ボールねじのボルト部であるビス１−ン５の他方
端には、ブレーキペダル１ｏに連結されたインプットロ
ッド１１が嵌めつけられている。On the other hand, an input rod 11 connected to a brake pedal 1o is fitted into the other end of the screw 1-5, which is a bolt portion of a ball screw.
ブレーキを作動させるべくドライバによってブレーキペ
ダル１０が踏み込まれると、その踏力はインプットロッ
ド１１に伝達されピストン５を軸方向へ押圧する。この
とぎ、ブレーキペダル１゜に設けられた踏力センサ１３
により踏力の検出が行なわれ、この踏力に応じてモータ
１に適切な電流が与えられ、モータ１は所望の１〜ルク
を生じて回転し、ボールねじケース４を回転さぜる。こ
の回転力がボールねじを介してビス１〜ン５の軸方向の
力に変換され、ブレーキペダル１０がらピストン５へ伝
達された踏力に対して適切な倍力作用をなす。When the driver depresses the brake pedal 10 to operate the brake, the depressing force is transmitted to the input rod 11 and presses the piston 5 in the axial direction. At this point, the pedal force sensor 13 installed at 1° of the brake pedal
The pedal force is detected, and an appropriate current is applied to the motor 1 in accordance with the pedal force, and the motor 1 rotates with a desired torque of 1 to 100 mph, thereby rotating the ball screw case 4. This rotational force is converted into a force in the axial direction of the screws 1 to 5 via the ball screw, and provides an appropriate boost to the pedal force transmitted from the brake pedal 10 to the piston 5.
なお、近来パルスモータの性能向上は著しく、小形で精
度の高いものが普及している。倍力装置の駆動源として
このパルスモータを用いる場合には、パワーフェイルし
たときにはドライバの踏力のみによってピストン５を押
し、ピストン５を引き戻すにはブレーキペダル１ｏに設
けられたリターンスプリング１２の弾発力にょってのみ
その動作が行なわれる。したがってピストン５の動きに
より同時に回転するロータ３の回転トルクは極力小さい
方が望ましく、そのためにはたとえばＶＲ型のパルスモ
ータを用いることが好ましい。Note that the performance of pulse motors has improved significantly in recent years, and compact and highly accurate motors have become popular. When using this pulse motor as a drive source for a booster, the piston 5 is pushed only by the driver's pedal force in the event of a power failure, and the elastic force of the return spring 12 provided on the brake pedal 1o is used to pull the piston 5 back. Only then will the action be performed. Therefore, it is desirable that the rotational torque of the rotor 3, which rotates simultaneously with the movement of the piston 5, be as small as possible, and for this purpose, it is preferable to use, for example, a VR type pulse motor.
［発明の効果］
以上の説明から明らかなＪ：うに本発明によれば次のど
どぎ優れた効果が発揮される。[Effects of the Invention] It is clear from the above explanation that the following excellent effects are exhibited according to the present invention.
すなわち、倍力装置の駆動源として電動機を用い、その
駆動力伝達装置としてボールねじを用いるので、装置自
体を小形化することができる。That is, since an electric motor is used as the drive source of the booster and a ball screw is used as the drive force transmission device, the device itself can be miniaturized.
第１図は本発明にかかる電動式プレ−キイ８カ駅間の概
略構成を示す側断面図、第２図は第１図のＩＩ−ＩＩ線
に沿う主縦断面図である。
図において１は電動（大、３はロータ、４はボールねじ
のナラ１〜部としてのボールねじケース、５はボールね
じのポル１一部としてのビス１〜ン、９（Ｊ油圧発生装
置のピストン、１０はブレーキペダルである。FIG. 1 is a side sectional view showing a schematic configuration of an electric brake key according to the present invention between eight stations, and FIG. 2 is a main vertical sectional view taken along line II--II in FIG. 1. In the figure, 1 is an electric motor (large), 3 is a rotor, 4 is a ball screw case as a part of the ball screw, 5 is a screw 1 as a part of a ball screw, and 9 (J of a hydraulic pressure generator). A piston, 10 is a brake pedal.
Claims (1)
ナット部を嵌め付け、前記ボールねじのボルト部の一端
を油圧発生装置のピストンに当接し、他端をブレーキペ
ダルに連結したことを特徴とする電動式ブレーキ倍力装
置。The nut part of the ball screw is fitted to the inner periphery of the rotor located on the inner periphery of the electric motor, one end of the bolt part of the ball screw is brought into contact with the piston of the hydraulic pressure generator, and the other end is connected to the brake pedal. Features an electric brake booster.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59264886A JPH069964B2 (en) | 1984-12-14 | 1984-12-14 | Electric brake booster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59264886A JPH069964B2 (en) | 1984-12-14 | 1984-12-14 | Electric brake booster |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61143253A true JPS61143253A (en) | 1986-06-30 |
| JPH069964B2 JPH069964B2 (en) | 1994-02-09 |
Family
ID=17409590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59264886A Expired - Lifetime JPH069964B2 (en) | 1984-12-14 | 1984-12-14 | Electric brake booster |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH069964B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6313855A (en) * | 1986-07-07 | 1988-01-21 | Honda Motor Co Ltd | Electric brake equipment for vehicles |
| WO2004110840A1 (en) * | 2003-06-18 | 2004-12-23 | Volkswagen Aktiengesellschaft | Electromechanical servobrake |
| US6845852B2 (en) | 2002-03-20 | 2005-01-25 | Advics Co., Ltd. | Brake control apparatus obtaining braking force by pressing of friction member using motor |
| EP2000376A1 (en) | 2007-06-05 | 2008-12-10 | Hitachi Ltd. | Electric booster and method for manufacturing the same |
| EP1808347A4 (en) * | 2004-10-29 | 2010-06-02 | Hitachi Ltd | BRAKING DEVICE AND AUTOMATIC REGULATOR THEREFOR |
| JP2012192850A (en) * | 2011-03-17 | 2012-10-11 | Toyota Motor Corp | Master cylinder device |
| DE102006027039B4 (en) | 2006-06-08 | 2023-01-19 | Volkswagen Ag | Electromechanical brake booster |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6501678B2 (en) * | 2015-08-28 | 2019-04-17 | 本田技研工業株式会社 | Linear actuator |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5774262A (en) * | 1980-08-22 | 1982-05-10 | Rau Swf Autozubehoer | Servomechanism |
| JPS5774252A (en) * | 1981-06-01 | 1982-05-10 | Kunimoto Shokai:Kk | Tire washing machine |
| JPS59212541A (en) * | 1983-05-12 | 1984-12-01 | ウエステイングハウス・ブレイク・アンド・シグナル・カムパニ−・リミテツド | Electric actuator |
-
1984
- 1984-12-14 JP JP59264886A patent/JPH069964B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5774262A (en) * | 1980-08-22 | 1982-05-10 | Rau Swf Autozubehoer | Servomechanism |
| JPS5774252A (en) * | 1981-06-01 | 1982-05-10 | Kunimoto Shokai:Kk | Tire washing machine |
| JPS59212541A (en) * | 1983-05-12 | 1984-12-01 | ウエステイングハウス・ブレイク・アンド・シグナル・カムパニ−・リミテツド | Electric actuator |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6313855A (en) * | 1986-07-07 | 1988-01-21 | Honda Motor Co Ltd | Electric brake equipment for vehicles |
| US6845852B2 (en) | 2002-03-20 | 2005-01-25 | Advics Co., Ltd. | Brake control apparatus obtaining braking force by pressing of friction member using motor |
| WO2004110840A1 (en) * | 2003-06-18 | 2004-12-23 | Volkswagen Aktiengesellschaft | Electromechanical servobrake |
| EP1808347A4 (en) * | 2004-10-29 | 2010-06-02 | Hitachi Ltd | BRAKING DEVICE AND AUTOMATIC REGULATOR THEREFOR |
| DE102006027039B4 (en) | 2006-06-08 | 2023-01-19 | Volkswagen Ag | Electromechanical brake booster |
| EP2000376A1 (en) | 2007-06-05 | 2008-12-10 | Hitachi Ltd. | Electric booster and method for manufacturing the same |
| US8011184B2 (en) | 2007-06-05 | 2011-09-06 | Hitachi, Ltd. | Electric booster and method for manufacturing the same |
| JP2012192850A (en) * | 2011-03-17 | 2012-10-11 | Toyota Motor Corp | Master cylinder device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH069964B2 (en) | 1994-02-09 |
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