CN105151031A - Electronic brake power assisting device with sliding lead screw structure - Google Patents
Electronic brake power assisting device with sliding lead screw structure Download PDFInfo
- Publication number
- CN105151031A CN105151031A CN201510599480.2A CN201510599480A CN105151031A CN 105151031 A CN105151031 A CN 105151031A CN 201510599480 A CN201510599480 A CN 201510599480A CN 105151031 A CN105151031 A CN 105151031A
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- CN
- China
- Prior art keywords
- reduction gear
- sliding
- double
- sliding nut
- screw
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- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
- B60T13/746—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive and mechanical transmission of the braking action
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
- B60T13/46—Vacuum systems
- B60T13/52—Vacuum systems indirect, i.e. vacuum booster units
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
- Braking Systems And Boosters (AREA)
Abstract
The invention relates to an electronic brake power assisting device with a sliding lead screw structure. A small gear is arranged at the end of a motor shaft. A first-level speed reduction gear engaged with the small gear is arranged on one side of the small gear. A second-level speed reduction gear is arranged on one side of the first-level speed reduction gear and engaged with the first-level speed reduction gear. A sliding nut sliding in the axial direction is arranged in the middle of the second-level speed reduction gear. The outer ring of the sliding nut is connected with the second-level speed reduction gear through positioning protrusions. A sliding screw rod rotationally connected with the sliding nut is arranged at the inner ring of the sliding nut. An ejector rod is arranged at one end of the sliding screw rod, and the other end of the sliding screw rod is connected with one end of a main cylinder piston, and the other end of the main cylinder piston is inserted in a brake master cylinder. The electronic brake power assisting device has the beneficial effects that the structure is simple, the production cost is low, and the rotation of a motor can be effectively converted into the sliding of the screw rod.
Description
Technical field
The present invention relates to lead screw technical field, particularly relate to a kind of electric brake work-saving device that lead screw structure is housed.
Background technology
Brake booster is the drg work-saving device extensively adopted from lilliput car to compact car, and roughly can be divided into vacuum servo, hydraulic booster and air pressure assisted, vacuum servo roughly can be divided into direct effect vacuum servo and hydraulic vacuum power-assisted.Because the direct power-assisted of direct effect vacuum servo is in legpower, brake operating sense is good, therefore, is widely used on car and small-sized load-carrying vehicle, but because step power is directly by as power-assisted, can by the restriction of installing space.Hydraulic vacuum power-assisted utilizes master cylinder generation hydraulic pressure to carry out power-assisted, so can be arranged on any position between master cylinder and wheel cylinder, but brake operating sense is generally poor than direct effect vacuum servo.
Brake booster is controlled by piston tube usually, if directly adopt cylinder, whole servo-unit speed of response can be made too fast, brake is unfavorable for, and people operates, so usually adopt motor to control, in order to allow motor be applicable to whole servo-unit, by rational structure, the rotation of motor is converted into slip.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of electric brake work-saving device that lead screw structure is housed, and has that structure is simple, productive costs is low, the rotation of motor can be changed into the features such as the slip of screw rod by actv..
The technical solution adopted for the present invention to solve the technical problems is: provide a kind of electric brake work-saving device that lead screw structure is housed, comprise motor shaft, miniature gears and primary speed-down gear, described motor shaft ends is provided with miniature gears, miniature gears side is provided with the primary speed-down gear engaged with it, the side of primary speed-down gear is provided with double-reduction gear, double-reduction gear and primary speed-down gears meshing, sliding nut is in axial sliding installed in the middle part of double-reduction gear, sliding nut outer ring is connected with double-reduction gear by positioning convex, described sliding nut inner ring place is provided with the sliding screw engaged with sliding nut, one end of described sliding screw is provided with push rod, the other end of sliding screw is connected with one end of master cylinder piston, the other end of master cylinder piston inserts and is arranged in master brake cylinder, sliding nut and double-reduction gear rotate simultaneously, sliding screw is driven to move towards master brake cylinder direction, described sliding screw outer ring is furnished with screw thread, described sliding nut is furnished with the teeth with screw-threaded engagement on one end inner ring of master cylinder piston, by installing miniature gears, primary speed-down pinion rotation can be driven when motor shaft is rotated, be used for by installing double-reduction gear, primary speed-down pinion rotation is made to drive double-reduction gear, by installing sliding nut, time double-reduction gear is rotated, rotate by driving sliding nut, sliding nut rotates through the teeth on it and the screw thread on sliding screw drives the sliding screw of its inside to do straight-line motion, sliding screw can promote master cylinder piston, the power-assisted that master cylinder piston can give brake system one extra, facilitate chaufeur brake.
Supplement as to the one of technical solutions according to the invention, described sliding nut is furnished with steady ring on the outer ring, one end of master cylinder piston, steady ring side in the middle part of sliding nut is furnished with several rectangle positioning convex of a circle, described double-reduction gear inner ring is furnished with the groove matched with rectangle positioning convex, by installing steady ring, can not coming off time double-reduction gear is arranged on sliding nut, making double-reduction gear that sliding nut can be driven to rotate by installing rectangle positioning convex.
Supplement as to the one of technical solutions according to the invention, described sliding nut outer ring is furnished with the rectangular projection that several and rectangle positioning convex match, the height of rectangular projection is less than the height of rectangle positioning convex, the width of rectangular projection is identical with the width of rectangle positioning convex, makes rectangular projection can as the slide rail of sliding nut axial motion.
Supplement as to the one of technical solutions according to the invention, under common mode of operation, double-reduction gear is arranged on rectangle positioning convex place, and double-reduction gear side and steady ring are fitted, after breaking down under mode of operation, double-reduction gear is in the state departed from steady ring.
Supplement as to the one of technical solutions according to the invention, described double-reduction gear in the middle part of the end face of push rod in bearing is installed, by installing bearing, the axial force be subject to when being used for making sliding nut to rotate and sliding and diametral load are stablized, and avoid sliding nut to damage.
Supplement as to the one of technical solutions according to the invention, the screw thread that described sliding screw outer ring is arranged adopts Acme thread.
Supplement as to the one of technical solutions according to the invention, be provided with the teeth being no less than three in described sliding nut, the screw thread of teeth and sliding screw matches.
beneficial effect
The present invention relates to a kind of electric brake work-saving device that lead screw structure is housed, be used for by installing double-reduction gear, primary speed-down pinion rotation is made to drive double-reduction gear, by installing sliding nut, time double-reduction gear is rotated, rotate by driving sliding nut, sliding nut rotates through the teeth on it and the screw thread on sliding screw drives the sliding screw of its inside to do straight-line motion, sliding screw can promote master cylinder piston, the power-assisted that master cylinder piston can give brake system one extra, facilitates chaufeur brake.The present invention also has that structure is simple, productive costs is low, the rotation of motor can be changed into the features such as the slip of screw rod by actv..
Accompanying drawing explanation
Fig. 1 is constructional drawing of the present invention;
Fig. 2 is the front view of sliding nut of the present invention;
Fig. 3 is working state figure under general case of the present invention;
Fig. 4 is the present invention's working state figure when breaking down.
Diagram: 1, push rod, 2, sliding screw, 3, sliding nut, 4, bearing, 5, motor shaft, 6, miniature gears, 7, primary speed-down gear, 8, double-reduction gear, 9, master cylinder piston, 10, master brake cylinder, 11, steady ring, 12, rectangle positioning convex, 13, rectangular projection.
Detailed description of the invention
Below in conjunction with specific embodiment, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.
Embodiments of the present invention relate to a kind of electric brake work-saving device that lead screw structure is housed, as shown in Fig. 1-4, comprise motor shaft 5, miniature gears 6 and primary speed-down gear 7, described motor shaft 5 end is provided with miniature gears 6, miniature gears 6 side is provided with the primary speed-down gear 7 engaged with it, the side of primary speed-down gear 7 is provided with double-reduction gear 8, double-reduction gear 8 engages with primary speed-down gear 7, sliding nut 3 is in axial sliding installed in the middle part of double-reduction gear 8, sliding nut 3 outer ring is connected with double-reduction gear 8 by positioning convex, described sliding nut 3 inner ring place is provided with the sliding screw 2 engaged with sliding nut 3, one end of described sliding screw 2 is provided with push rod 1, the other end of sliding screw 2 is connected with one end of master cylinder piston 9, the other end of master cylinder piston 9 inserts and is arranged in master brake cylinder 10, sliding nut 3 and double-reduction gear 8 rotate simultaneously, sliding screw 2 is driven to move towards master brake cylinder 10 direction, described sliding screw 2 outer ring is furnished with screw thread, described sliding nut 3 is furnished with the teeth with screw-threaded engagement on one end inner ring of master cylinder piston 9.
Described sliding nut 3 is furnished with steady ring 11 on the outer ring, one end of master cylinder piston 9, steady ring 11 side in the middle part of sliding nut 3 is furnished with several rectangle positioning convex 12 of a circle, and described double-reduction gear 8 inner ring is furnished with the groove matched with rectangle positioning convex 12.
Described sliding nut 3 outer ring is furnished with several and rectangle positioning convex 12 match rectangular protruding 13.
Under common mode of operation, double-reduction gear 8 is arranged on rectangle positioning convex 12 place, and double-reduction gear 8 side and steady ring 11 are fitted, and after breaking down under mode of operation, double-reduction gear 8 is in the state departed from steady ring 11.
Described double-reduction gear 8 in the middle part of the end face of push rod 1 in bearing 4 is installed.
The screw thread that described sliding screw 2 outer ring is arranged adopts Acme thread.
Be provided with the teeth being no less than three in described sliding nut 3, the screw thread of teeth and sliding screw 2 matches.
Embodiment 1
Time this device is arranged on brake system, brake pedal is connected with push rod 1, miniature gears 6 is connected with motor shaft 5 close-fitting, when chaufeur steps on stretcher, push rod 1 travels forward, motor starts rotary motion after receiving signal, motor shaft 5 drives the rotation of miniature gears 6, miniature gears 6 passes torque to double-reduction gear 8 by primary speed-down gear 7, due to the relation of ratio of number of teeth, the rotative speed of motor can be decelerated after being delivered to double-reduction gear 8, double-reduction gear 8 drives the rotary motion of sliding nut 3, rotary motion is converted to the straight-line motion of sliding screw 2 by sliding nut 3 by the screw thread in teeth and sliding screw 2, sliding screw 2 can promote master cylinder piston 9, so just by motor for master brake cylinder 10 provides an extra power, be reached for chaufeur to carry out braking the effect of power-assisted is provided.
Embodiment 2
Situation about being damaged when motor or occur miniature gears 6, when in primary speed-down gear 7 and double-reduction gear 8, any one appearance cannot operate, assisted by the disengagement structure of this device with regard to needing, avoid because losing efficacy and causing unexpected train operation accident appears in servo-unit, disengagement structure, mainly trample braking vane energetically by chaufeur, make to step on braking vane and promote push rod 1, push rod 1 promotes sliding screw 2 and sliding nut 3, steady ring 11 on sliding nut 3 departs from double-reduction gear 8, make sliding nut 3 can apply pressure towards master brake cylinder 10 direction, for master brake cylinder 10 provides an extra power, be reached for chaufeur to carry out braking the effect of power-assisted is provided.
Embodiment 3
When the structural strength of the lead screw needed for whole servo-unit changes time, by carrying out suitable adjustment to the transverse tooth thickness of sliding nut 3 and sliding screw 2, the intensity of total can be increased.
Claims (7)
1. one kind is equipped with the electric brake work-saving device of lead screw structure, comprise motor shaft (5), miniature gears (6) and primary speed-down gear (7), it is characterized in that: described motor shaft (5) end is provided with miniature gears (6), miniature gears (6) side is provided with the primary speed-down gear (7) engaged with it, the side of primary speed-down gear (7) is provided with double-reduction gear (8), double-reduction gear (8) engages with primary speed-down gear (7), double-reduction gear (8) middle part is provided with sliding nut (3) in axial sliding, sliding nut (3) outer ring is connected with double-reduction gear (8) by positioning convex, described sliding nut (3) inner ring place is provided with the sliding screw (2) engaged with sliding nut (3), one end of described sliding screw (2) is provided with push rod (1), the other end of sliding screw (2) is connected with one end of master cylinder piston (9), the other end of master cylinder piston (9) inserts and is arranged in master brake cylinder (10), sliding nut (3) and double-reduction gear (8) rotate simultaneously, sliding screw (2) is driven to move towards master brake cylinder (10) direction, described sliding screw (2) outer ring is furnished with screw thread, described sliding nut (3) is furnished with the teeth with screw-threaded engagement on one end inner ring of master cylinder piston (9).
2. a kind of electric brake work-saving device that lead screw structure is housed according to claim 1, it is characterized in that: described sliding nut (3) is furnished with steady ring (11) on the outer ring, one end of master cylinder piston (9), steady ring (11) is furnished with several rectangle positioning convex (12) of a circle near side, sliding nut (3) middle part, described double-reduction gear (8) inner ring is furnished with the groove matched with rectangle positioning convex (12).
3. a kind of electric brake work-saving device that lead screw structure is housed according to claim 2, is characterized in that: described sliding nut (3) outer ring is furnished with the rectangular projection (13) that several and rectangle positioning convex (12) match.
4. a kind of electric brake work-saving device that lead screw structure is housed according to claim 3, it is characterized in that: under common mode of operation, double-reduction gear (8) is arranged on rectangle positioning convex (12) place, double-reduction gear (8) side and steady ring (11) are fitted, after breaking down under mode of operation, double-reduction gear (8) is in the state departed from steady ring (11).
5. a kind of electric brake work-saving device that lead screw structure is housed according to claim 1, is characterized in that: described double-reduction gear (8) in the middle part of the end face of push rod (1) in bearing (4) is installed.
6. a kind of electric brake work-saving device that lead screw structure is housed according to claim 1, is characterized in that: the screw thread that described sliding screw (2) outer ring is arranged adopts Acme thread.
7. a kind of electric brake work-saving device that lead screw structure is housed according to claim 1, it is characterized in that: be provided with the teeth being no less than three in described sliding nut (3), the screw thread of teeth and sliding screw (2) matches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510599480.2A CN105151031B (en) | 2015-09-18 | 2015-09-18 | A kind of electric brake power assisting device equipped with lead screw structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510599480.2A CN105151031B (en) | 2015-09-18 | 2015-09-18 | A kind of electric brake power assisting device equipped with lead screw structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105151031A true CN105151031A (en) | 2015-12-16 |
| CN105151031B CN105151031B (en) | 2018-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510599480.2A Active CN105151031B (en) | 2015-09-18 | 2015-09-18 | A kind of electric brake power assisting device equipped with lead screw structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105151031B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106476780A (en) * | 2016-11-04 | 2017-03-08 | 浙江力邦合信智能制动系统股份有限公司 | Deceleration of electrons booster |
| CN107364436A (en) * | 2017-06-09 | 2017-11-21 | 宁波吉利汽车研究开发有限公司 | A kind of electric booster for vehicle braking |
| CN107380153A (en) * | 2017-06-09 | 2017-11-24 | 宁波吉利汽车研究开发有限公司 | A kind of brakes for vehicle |
| CN111845683A (en) * | 2019-04-25 | 2020-10-30 | 罗伯特·博世有限公司 | Electromechanical brake pressure generator for a hydraulic brake system of a vehicle and vehicle comprising an electromechanical brake pressure generator |
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| CN101513868A (en) * | 2008-02-20 | 2009-08-26 | 株式会社万都 | Electric parking brake |
| KR20130008348A (en) * | 2011-07-12 | 2013-01-22 | 현대모비스 주식회사 | Electric parking brake in vehicle |
| CN104245560A (en) * | 2011-04-01 | 2014-12-24 | 西格恩工程简易股份有限公司 | Assembly comprising security apparatus equipping lifting device in particular winch and system for actuating same |
| CN204493692U (en) * | 2015-02-02 | 2015-07-22 | 杭州金兰达新能源科技有限公司 | Drag-line EPB actuator |
| WO2015152591A1 (en) * | 2014-03-31 | 2015-10-08 | 한국델파이주식회사 | Driving unit for electronic parking brake |
| CN205034109U (en) * | 2015-09-18 | 2016-02-17 | 宁波拓普智能刹车系统有限公司 | Electron brake booster unit of slip lead screw structure is equipped with |
-
2015
- 2015-09-18 CN CN201510599480.2A patent/CN105151031B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101513868A (en) * | 2008-02-20 | 2009-08-26 | 株式会社万都 | Electric parking brake |
| CN104245560A (en) * | 2011-04-01 | 2014-12-24 | 西格恩工程简易股份有限公司 | Assembly comprising security apparatus equipping lifting device in particular winch and system for actuating same |
| KR20130008348A (en) * | 2011-07-12 | 2013-01-22 | 현대모비스 주식회사 | Electric parking brake in vehicle |
| WO2015152591A1 (en) * | 2014-03-31 | 2015-10-08 | 한국델파이주식회사 | Driving unit for electronic parking brake |
| CN204493692U (en) * | 2015-02-02 | 2015-07-22 | 杭州金兰达新能源科技有限公司 | Drag-line EPB actuator |
| CN205034109U (en) * | 2015-09-18 | 2016-02-17 | 宁波拓普智能刹车系统有限公司 | Electron brake booster unit of slip lead screw structure is equipped with |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106476780A (en) * | 2016-11-04 | 2017-03-08 | 浙江力邦合信智能制动系统股份有限公司 | Deceleration of electrons booster |
| CN107364436A (en) * | 2017-06-09 | 2017-11-21 | 宁波吉利汽车研究开发有限公司 | A kind of electric booster for vehicle braking |
| CN107380153A (en) * | 2017-06-09 | 2017-11-24 | 宁波吉利汽车研究开发有限公司 | A kind of brakes for vehicle |
| CN107364436B (en) * | 2017-06-09 | 2019-05-31 | 宁波吉利汽车研究开发有限公司 | A kind of electric booster for vehicle braking |
| CN111845683A (en) * | 2019-04-25 | 2020-10-30 | 罗伯特·博世有限公司 | Electromechanical brake pressure generator for a hydraulic brake system of a vehicle and vehicle comprising an electromechanical brake pressure generator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105151031B (en) | 2018-05-11 |
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Inventor after: Jiang Kaihong Inventor after: Mao Rui Inventor before: Jiang Kaihong Inventor before: Yan Weiwei |
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