CN113997917A - Mechanical hydraulic component of electronic brake booster capable of mechanical hydraulic decoupling - Google Patents
Mechanical hydraulic component of electronic brake booster capable of mechanical hydraulic decoupling Download PDFInfo
- Publication number
- CN113997917A CN113997917A CN202111407833.6A CN202111407833A CN113997917A CN 113997917 A CN113997917 A CN 113997917A CN 202111407833 A CN202111407833 A CN 202111407833A CN 113997917 A CN113997917 A CN 113997917A
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- China
- Prior art keywords
- piston
- mechanical hydraulic
- magnet holder
- valve body
- magnet
- 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
- 239000010985 leather Substances 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 10
- 238000006073 displacement reaction Methods 0.000 description 10
- 238000011084 recovery Methods 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 4
- 238000000926 separation method Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
Images
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
-
- 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
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/04—Brake-action initiating means for personal initiation foot actuated
- B60T7/06—Disposition of pedal
-
- 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
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
- B60T8/4072—Systems in which a driver input signal is used as a control signal for the additional fluid circuit which is normally used for braking
- B60T8/4081—Systems with stroke simulating devices for driver input
- B60T8/409—Systems with stroke simulating devices for driver input characterised by details of the stroke simulating device
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Braking Systems And Boosters (AREA)
Abstract
The invention relates to a mechanical hydraulic component of an electronic brake booster capable of mechanical hydraulic decoupling, and belongs to the field of automobile braking. Magnet holder subassembly and support rigid connection, valve body and support pass through interference fit as an organic whole with the backup pad respectively, and valve body and screw rod interference fit are as an organic whole, and valve body and magnet holder subassembly are clearance fit, can relative slip, and the piston is interference fit with the briquetting, and the piston is clearance fit, can relative slip with the magnet holder subassembly, and the piston spring is located the piston, and valve body, magnet holder subassembly, piston, leather cup, sealing washer connect into a sealed chamber, magnet and magnet holder subassembly fixed connection. The advantage is novel structure, can realize mechanical hydraulic decoupling zero, and mechanical hydraulic pressure part accessible hydraulic pressure transmission thrust makes the booster when car braking energy retrieves, brings bigger continuation of journey for the vehicle.
Description
Technical Field
The invention belongs to the field of automobile braking, and particularly relates to a mechanical hydraulic component of an electronic brake booster capable of mechanical hydraulic decoupling.
Background
In the current automobile braking industry, the application of the vacuum booster still occupies a great proportion, but with the continuous development of new energy automobiles and automatic driving, the conventional vacuum booster cannot meet the requirements of active braking and braking energy recovery, so that the electronic brake booster is applied and becomes the mainstream in the future.
In current automobile electronic brake booster products, such as products such as Bosch Iboost, use the mode of complete mechanical connection to reach driver's footboard lug connection booster, booster and brake master cylinder are mechanical connection. Due to the adoption of the mode, when the braking energy of the vehicle is recovered, the brake booster cannot complete full decoupling, so that the brake needs to be matched with the ESC for recovering the braking energy, the braking foot feeling is poor, and the recovery efficiency is low.
Disclosure of Invention
The invention provides a mechanical hydraulic component of an electronic brake booster capable of mechanical hydraulic decoupling, which aims to solve the problems that the brake booster can not complete full decoupling when the braking energy of a vehicle is recovered, so that a brake needs to be matched with an ESC (electronic stability control) for recovering the braking energy, the brake foot feeling is poor, and the recovery efficiency is low.
The technical scheme adopted by the invention is as follows: the adjustable magnetic valve comprises a support, the briquetting, the piston spring, the magnet holder subassembly, the sealing washer, a valve body, the leather cup, the screw rod, backup pad and magnet, wherein magnet holder subassembly and support rigid connection, valve body and support pass through interference fit as an organic whole with the backup pad respectively, valve body and screw rod interference fit are as an organic whole, the valve body is clearance fit with the magnet holder subassembly, but relative slip, the piston is interference fit with the briquetting, the piston is clearance fit with the magnet holder subassembly, but relative slip, the piston spring is located the piston, the valve body, the magnet holder subassembly, the piston, the leather cup, the sealing washer connects into a sealed chamber, magnet and magnet holder subassembly fixed connection.
The bracket is made of plastic with stronger toughness.
The support plate is made of metal.
The screw thread of the screw rod is a non-self-locking screw thread.
When the leather cup 8 and the magnet seat assembly 5 are sealed through the oil hole, hydraulic support is formed.
When the leather cup 8 and the magnet seat assembly 5 flow through the oil hole, the hydraulic support fails.
The invention has the advantages that the structure is novel, the mechanical hydraulic decoupling can be realized, namely, the pedal of a driver is mechanically separated from the brake master cylinder, when the vehicle needs to recover the braking energy, the foot feel of the driver is simulated by the stroke simulator formed by the spring, and the booster can not brake or brake a little; when the motor of the booster is damaged, the mechanical hydraulic part can be directly and mechanically connected with the master cylinder after the idle stroke feeding is finished, and the driver can directly decelerate the vehicle through the brake pedal at the moment; when the booster is actively boosted, the mechanical hydraulic component can transmit thrust through hydraulic pressure, so that the booster can bring greater endurance for the vehicle when the braking energy of the vehicle is recovered.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of a portion I of FIG. 1, showing a sealed state;
FIG. 3 is a schematic illustration of the failure of the hydraulic support of the present invention;
FIG. 4 is an enlarged view of section II of FIG. 3;
FIG. 5 is a view of the present invention installed in a booster assembly in use.
Detailed Description
Including support 1, briquetting 2, piston 3, piston spring 4, magnet holder subassembly 5, sealing washer 6, valve body 7, leather cup 8, screw rod 9, backup pad 10 and magnet 11, wherein magnet holder subassembly 5 and support 1 rigid connection, valve body 7 and support 1 pass through interference fit as an organic whole with backup pad 10 respectively, valve body 7 is as an organic whole with screw rod 9 interference fit, valve body 7 is clearance fit with magnet holder subassembly 5, but relative slip, piston 3 is interference fit with briquetting 2, piston 3 is clearance fit with magnet holder subassembly 5, but relative slip, piston spring 4 is located piston 3, valve body 7, magnet holder subassembly 5, piston 3, leather cup 8, sealing washer 6 connects into a seal chamber A, be used for storing liquid, magnet 11 and magnet holder subassembly 5 fixed connection. The magnet 11 is in clearance fit with the sensor 121001 in the displacement sensor assembly 1210 and is capable of sliding axially relative to the sensor 121001 to generate a relative displacement, which generates a displacement signal for controlling the operation of the motor.
The bracket 1 is made of plastic materials with high toughness, such as nylon, polyethylene terephthalate and the like, and the bracket 1 is in interference fit with the metal support plate 10 with small volume through the buckle, so that the whole weight of the mechanism is light.
The support plate 10 of the present invention is made of metal.
The thread of the screw 9 is a non-self-locking thread and is in threaded connection with a transmission nut 1209 which is also the non-self-locking thread, and after the assisting force of the mechanism is completed, the mechanism can be pressed back to the initial position under the action of a return spring 1204.
When the leather cup 8 and the magnet seat assembly 5 are sealed by the oil hole, a hydraulic support is formed, as shown in figure 2; when the leather cup 8 and the magnet seat assembly 5 flow through the oil hole, the hydraulic support fails, as shown in fig. 4.
Principle of operation
Different from the traditional automobile electronic brake booster product, the electronic brake booster capable of mechanically and hydraulically decoupling adopts a mechanical hydraulic decoupling design mode and uses a mechanical hydraulic structure to carry out system coupling and separation control.
As shown in FIG. 5, the invention is assembled in an automobile electronic brake booster 12, an upper shell 1202 and a lower shell 1219 of the booster are connected through sealant, a brake master cylinder 1201 is connected with the upper shell 1202 through threads, the lower shell 1219 is connected with a bearing 1212 through clearance fit and limited by a retainer ring, a bearing sleeve 1213 is in interference fit with the bearing 1212, and a dust cover 1208 is in interference fit with the bearing sleeve 1213; the motor outputs power to a transmission shaft 1217, the transmission shaft 1217 is in interference riveting with a gear 1218, the gear 1216 mounted on a gear shaft 1215 is meshed with the gear 1218 and a gear 1211, the gear 1211 and a transmission nut 1209 are mutually attached under the action of a return spring 1204 and a reverse force by a clearance fit structure consisting of 18 guide grooves, namely, the gear 1211 drives the transmission nut 1209 to rotate to transmit torque; the transmission nut 1209 is matched with the screw 9 in a spiral transmission way, the inner part of the transmission nut 1209 and the outer part of the screw 9 are trapezoidal and are not self-locking threads, and the rotary motion is changed into linear motion; the components such as the screw 9, the valve body 7, the bracket 1 and the like are restrained from rotating along with the transmission nut 1209 and performing reciprocating linear motion along the guide rod 1203 by the clearance sliding fit of the bracket 1 and the guide rod 1203.
The magnet 11 and the sensor 121001 in the displacement sensor component 1210 are matched with each other, in a normal state, the magnet 11 moves forward along with a pedal of a driver to form a displacement difference with the sensor 121001, at the moment, a motor is started to drive parts such as the bracket 1, the displacement sensor 121001 and the like in the mechanical hydraulic component to move forward to form an assisting force, until the movement difference between the magnet 11 and the sensor 121001 is eliminated (namely, the assisting force is returned to zero), at the moment, the assisting force is completed, and the brake is released, namely, the opposite direction is opposite to the braking. Because the invention is a mechanical hydraulic decoupling booster, the foot feel of the driver is adjusted by the push rod spring 1220 and the piston spring 4. When the booster system of the booster is abnormal (including the abnormality of a motor, a power supply or a control program), as shown in fig. 1, a driver only needs to step on a pedal to move the magnet base assembly 5 by a distance of h1, the distance between the bottom of the piston 3 and the magnet base assembly 5 is h2, the magnet base assembly 5 is rigidly connected with the support 1 at the moment, the pedal force of the driver enables the whole system to advance, and the brake system works by the input force of the pedal of the driver at the moment to complete braking.
As shown in fig. 1 and 2, the pedal is connected to the valve rod 1222, the valve rod 1222 is screwed with the magnet base assembly 5 through the connector 1208, the return spring base 1221 is riveted with the valve rod 1222, the magnet base assembly 5, the piston 3, the valve body 7, the sealing ring 6 and the cup leather 8 are assembled to form a sealing cavity a, and the cavity is filled with liquid.
As shown in figure 1, when the booster works normally, a driver steps on a brake pedal to drive the magnet base assembly 5 to move to form a displacement difference, the motor is started to drive the screw rod 9 and the valve body 7 to follow, and the pressure block 2 can support the feedback disc 1207 to form boosting due to the fact that hydraulic pressure in the sealing cavity and the piston spring 4 support. When the booster needs braking energy recovery, the torque output of the motor is reduced, the following performance of the screw rod 9 and the piston 7 is poor, and at the moment, the pedal input force only needs to be larger than the hydraulic supporting force of the sealing cavity, so that the magnet seat assembly 5 is moved for a certain distance. As shown in fig. 3 and 4, the hydraulic seal chamber is unsealed, that is, the hydraulic support is lost, the magnet holder assembly 5 and the valve body 7 move relatively h3, the piston spring 3 provides the brake pedal feel for the driver, when the booster motor fails, the magnet holder assembly 5 moves a distance h1 after the driver pedal input force moves the magnet holder assembly 5, the magnet holder assembly 5 is rigidly connected with the bracket 1, and the driver input force can be transmitted to the brake master cylinder 1201 through the bracket 1 to bring about braking.
The specific application is as follows:
1. when the driver steps on the brake pedal, the valve rod 1222 pushes the magnet base assembly 5 to move, the mechanical hydraulic mechanism is in a coupling state due to the support of the hydraulic pressure and the piston spring 4, and the motor is started through the displacement difference formed by the magnet 11 and the displacement sensor 121001 to form the brake.
2. When the booster needs braking energy recovery, the motor moment of torsion reduces, leads to screw rod 9, valve body 7 poor following nature, and driver's input force makes magnet holder subassembly 5 further advance, makes leather cup 8 and the separation of crossing the oilhole, leads to the hydraulic pressure to support inefficacy, and at this moment, magnet holder subassembly 5 and valve body 7 separation, and the driver foot feel is adjusted by piston spring 4.
3. When the motor of the booster fails, the driver inputs force to enable the hydraulic support to fail, the magnet seat assembly 5 is driven to move continuously, after the displacement h1 is walked, the magnet seat assembly 5 is in rigid contact with the support 1, and the driver inputs force to directly act on the brake master cylinder 1201 to bring braking.
Claims (6)
1. A mechanical hydraulic component of a mechanically hydraulically decouplable electronic brake booster, characterized in that: the adjustable magnetic valve comprises a support, the briquetting, the piston spring, the magnet holder subassembly, the sealing washer, a valve body, the leather cup, the screw rod, backup pad and magnet, wherein magnet holder subassembly and support rigid connection, valve body and support pass through interference fit as an organic whole with the backup pad respectively, valve body and screw rod interference fit are as an organic whole, the valve body is clearance fit with the magnet holder subassembly, but relative slip, the piston is interference fit with the briquetting, the piston is clearance fit with the magnet holder subassembly, but relative slip, the piston spring is located the piston, the valve body, the magnet holder subassembly, the piston, the leather cup, the sealing washer connects into a sealed chamber, magnet and magnet holder subassembly fixed connection.
2. A mechanical hydraulic component of a mechanically hydraulically decouplable electronic brake booster according to claim 1, characterized in that: the support is made of plastic materials with high toughness.
3. A mechanical hydraulic component of a mechanically hydraulically decouplable electronic brake booster according to claim 1, characterized in that: the supporting plate is made of metal.
4. A mechanical hydraulic component of a mechanically hydraulically decouplable electronic brake booster according to claim 1, characterized in that: the screw thread of the screw rod is a non-self-locking screw thread.
5. A mechanical hydraulic component of a mechanically hydraulically decouplable electronic brake booster according to claim 1, characterized in that: when the leather cup and the magnet seat assembly are sealed through the oil hole, hydraulic support is formed.
6. A mechanical hydraulic component of a mechanically hydraulically decouplable electronic brake booster according to claim 1, characterized in that: when the leather cup and the magnet seat assembly pass through the oil hole to flow, the hydraulic support fails.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111407833.6A CN113997917B (en) | 2021-11-24 | 2021-11-24 | Mechanical hydraulic component of electronic brake booster capable of being mechanically and hydraulically decoupled |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111407833.6A CN113997917B (en) | 2021-11-24 | 2021-11-24 | Mechanical hydraulic component of electronic brake booster capable of being mechanically and hydraulically decoupled |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113997917A true CN113997917A (en) | 2022-02-01 |
| CN113997917B CN113997917B (en) | 2023-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111407833.6A Active CN113997917B (en) | 2021-11-24 | 2021-11-24 | Mechanical hydraulic component of electronic brake booster capable of being mechanically and hydraulically decoupled |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007160992A (en) * | 2005-12-12 | 2007-06-28 | Isao Matsuno | Vehicular brake device |
| US20100225159A1 (en) * | 2006-08-29 | 2010-09-09 | Continental Teves Ag & Co., Ohg | Braking System For Motor Vehicles |
| JP2012210831A (en) * | 2011-03-30 | 2012-11-01 | Honda Motor Co Ltd | Hydraulic pressure generation device for vehicle |
| WO2012157609A1 (en) * | 2011-05-16 | 2012-11-22 | ローベルト ボッシュ ゲゼルシャフト ミット ベシュレンクテル ハフツング | Stroke simulator, master cylinder having same, and brake system using master cylinder |
| CN104129382A (en) * | 2014-08-24 | 2014-11-05 | 吉林东光奥威汽车制动系统有限公司 | Vacuum booster capable of simulating pedal travel |
| US20150344013A1 (en) * | 2012-12-21 | 2015-12-03 | Lucas Automotive Gmbh | Electrohydraulic Motor Vehicle Brake System and Method for Operating the Same |
| CN106427967A (en) * | 2016-11-25 | 2017-02-22 | 清华大学 | Brake by-wire system used for full mechanical decoupling automobile |
| US20180134268A1 (en) * | 2015-05-21 | 2018-05-17 | Lucas Automotive Gmbh | Electrohydraulic Braking-Force Generation Device for an Electrohydraulic Motor Vehicle Braking System |
| US20190061721A1 (en) * | 2017-08-30 | 2019-02-28 | Hyundai Mobis Co., Ltd. | Brake apparatus for vehicle |
| CN109624957A (en) * | 2019-02-26 | 2019-04-16 | 吉林大学 | A kind of integrated electric energy assisted braking system with novel coupled modes |
| CN112339735A (en) * | 2020-12-03 | 2021-02-09 | 吉林东光奥威汽车制动系统有限公司 | Electronic brake booster for automobile |
-
2021
- 2021-11-24 CN CN202111407833.6A patent/CN113997917B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007160992A (en) * | 2005-12-12 | 2007-06-28 | Isao Matsuno | Vehicular brake device |
| US20100225159A1 (en) * | 2006-08-29 | 2010-09-09 | Continental Teves Ag & Co., Ohg | Braking System For Motor Vehicles |
| JP2012210831A (en) * | 2011-03-30 | 2012-11-01 | Honda Motor Co Ltd | Hydraulic pressure generation device for vehicle |
| WO2012157609A1 (en) * | 2011-05-16 | 2012-11-22 | ローベルト ボッシュ ゲゼルシャフト ミット ベシュレンクテル ハフツング | Stroke simulator, master cylinder having same, and brake system using master cylinder |
| US20150344013A1 (en) * | 2012-12-21 | 2015-12-03 | Lucas Automotive Gmbh | Electrohydraulic Motor Vehicle Brake System and Method for Operating the Same |
| CN104129382A (en) * | 2014-08-24 | 2014-11-05 | 吉林东光奥威汽车制动系统有限公司 | Vacuum booster capable of simulating pedal travel |
| US20180134268A1 (en) * | 2015-05-21 | 2018-05-17 | Lucas Automotive Gmbh | Electrohydraulic Braking-Force Generation Device for an Electrohydraulic Motor Vehicle Braking System |
| CN106427967A (en) * | 2016-11-25 | 2017-02-22 | 清华大学 | Brake by-wire system used for full mechanical decoupling automobile |
| US20190061721A1 (en) * | 2017-08-30 | 2019-02-28 | Hyundai Mobis Co., Ltd. | Brake apparatus for vehicle |
| CN109624957A (en) * | 2019-02-26 | 2019-04-16 | 吉林大学 | A kind of integrated electric energy assisted braking system with novel coupled modes |
| CN112339735A (en) * | 2020-12-03 | 2021-02-09 | 吉林东光奥威汽车制动系统有限公司 | Electronic brake booster for automobile |
Non-Patent Citations (1)
| Title |
|---|
| 刘广宇;方恩;朱宗云;: "电子助力制动系统研发", 上海汽车, no. 01, pages 17 - 21 * |
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| Publication number | Publication date |
|---|---|
| CN113997917B (en) | 2023-12-19 |
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