WO2015077950A1 - 用于汽车刹车的助力装置 - Google Patents

用于汽车刹车的助力装置 Download PDF

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Publication number
WO2015077950A1
WO2015077950A1 PCT/CN2013/088011 CN2013088011W WO2015077950A1 WO 2015077950 A1 WO2015077950 A1 WO 2015077950A1 CN 2013088011 W CN2013088011 W CN 2013088011W WO 2015077950 A1 WO2015077950 A1 WO 2015077950A1
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WIPO (PCT)
Prior art keywords
pump
power
vacuum booster
air
booster pump
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Application number
PCT/CN2013/088011
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English (en)
French (fr)
Inventor
吕润春
Original Assignee
吕润春
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by 吕润春 filed Critical 吕润春
Priority to PCT/CN2013/088011 priority Critical patent/WO2015077950A1/zh
Publication of WO2015077950A1 publication Critical patent/WO2015077950A1/zh

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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
    • B60T13/10—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
    • 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
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/02—Arrangements of pumps or compressors, or control devices therefor

Definitions

  • the invention relates to an automobile brake assist system, in particular to a pneumatic booster for an automobile brake.
  • brake boosters are usually provided on the car to provide auxiliary power and provide safety for the brakes.
  • the hydraulic boosting method is to provide the braking force by pushing the piston by the hydraulic pump.
  • the working principle of the pneumatic method is: a diaphragm is arranged in the middle of the brake booster pump, and the pump is divided into diaphragms. Two parts, one part is connected to the atmosphere, and the other part is connected to the engine intake pipe through the pipeline. When the engine is working, the air is sucked, causing the vacuum of one side of the brake booster pump, and the other side is the normal working pressure. The pressure difference is formed between the two. The pressure difference enhances the braking force and reduces the manual braking force.
  • the vacuum booster pump includes: a housing, an evacuation tube, a servo piston, a connecting rod, and a control valve.
  • the servo piston includes a disk-shaped piston head to which a servo diaphragm is fixed and a piston rod portion in which a control valve is mounted.
  • the control valve comprises: a feedback plunger, which is movably mounted in a central through hole of the piston head; the valve stem has a front end portion located in the receiving groove of the feedback plunger; and the valve body has a convex surface at the front end surface thereof a ring, the collar can be in contact with the rear end surface of the feedback plunger,
  • the atmospheric valve is formed, and the piston head has a passage connecting the front chamber and the rear chamber.
  • the piston head has a protruding portion adjacent to the passage position, and the protruding portion can cooperate with the outer side of the front end surface of the valve body to form a vacuum valve.
  • the clutch master pump forms a pressure difference between the front chamber and the rear chamber through a vacuum booster pump, and the pressure difference pushes the movement of the connection to assist.
  • a vacuum booster pump needs to be separately provided, and the connecting rod of the pump is connected with the push rod of the clutch master cylinder to assist the power, so that the manufacturing cost is increased, but the vacuum booster pump and the clutch are required.
  • Another object of the present invention is to provide a power assisting device for a brake of an automobile, which can accurately measure the pressure difference between the two sides of the booster drum, and combines the intelligent control device to control the deflation rate to realize the assisting of the brake brake. Precise control.
  • a booster device for a brake of a vehicle comprising a vacuum booster pump, characterized in that the device further comprises a gas pipe and an air pump, the gas pipe is arranged in a front cavity of the vacuum booster pump, and one end is connected to the vacuum booster The front chamber of the pump is connected to the air pump at the other end, and the air is supplied to the front chamber of the vacuum booster pump through the air pump to generate a pressure difference during the braking process, thereby achieving the effect of assisting the braking.
  • a pressure sensor is further disposed on the front cavity and the rear cavity of the vacuum booster pump to measure a pressure difference between the front cavity and the rear cavity of the vacuum booster pump. Further, the pressure sensor is connected to the differential pressure meter for accurately displaying the pressure difference between the front chamber and the rear chamber of the vacuum booster pump.
  • the air pump can also be electrically connected to the intelligent control device for receiving control commands to accurately control the pressure difference between the front cavity and the rear cavity, thereby achieving an accurate assist braking effect.
  • the above intelligent control device can be combined with the wheel speed to accurately calculate the required brake pressure difference to ensure the safety of the vehicle.
  • the invention connects an air pump supercharge on the basis of the original brake vacuum booster pump, provides a certain air pressure for the vacuum booster pump, increases the pressure difference between the two sides of the vacuum booster pump, and can reduce the manual system. Power, so that the operator can easily achieve the brake; Second, it can provide the safety and reliability of the brake to ensure the safety of the vehicle.
  • FIG. 1 is a schematic view showing the structure of an embodiment of the present invention. detailed description
  • a vacuum booster pump including a front cavity 9 and a rear cavity 4
  • a gas pipe 7 The air pump 8, the front chamber pressure sensor 13, the rear chamber pressure sensor 12, and the differential pressure meter 11.
  • the vacuum booster pump is provided with a through push rod 2, one end of the push rod 2 is connected to the clutch pump 1, and the other end of the push rod 2 is connected to the clutch 10.
  • a diaphragm 5 is further disposed in the vacuum booster pump, and the inside of the vacuum booster pump is partitioned into a front chamber 9 and a rear chamber 4 through the diaphragm 5; a membrane flap 6 is disposed at a position where the push rod 2 is in contact with the diaphragm 5.
  • a gap is formed in the upper portion of the front chamber 9 of the vacuum booster pump, through which the gas pipe 7 is connected, and the gas pipe 7 is connected to the air pump 8.
  • the gas pipe 7 can be placed at any position of the front chamber 9 as long as it does not affect the setting of other components.
  • the front cavity and the rear cavity of the vacuum booster pump are further provided with a front cavity pressure sensor 13 and a rear cavity pressure sensor 12, and the front cavity pressure sensor 13 and the rear cavity pressure sensor 12 are connected to the differential pressure measuring instrument 11 for accurate display.
  • the pressure difference between the front and rear chambers of the vacuum booster pump is further provided with a front cavity pressure sensor 13 and a rear cavity pressure sensor 12, and the front cavity pressure sensor 13 and the rear cavity pressure sensor 12 are connected to the differential pressure measuring instrument 11 for accurate display.
  • the air pump 8 can also be electrically connected to an intelligent control device (not shown) for receiving control commands to accurately control the pressure difference between the front chamber and the rear chamber to achieve an accurate boosting effect.
  • the intelligent control unit can be combined with the wheel speed to accurately calculate the required brake pressure difference to ensure the safety of the brake during driving.
  • the air pump 8 is operated, and air is introduced into the front chamber 9 through the gas pipe 7, so that a pressure difference is formed between the front chamber 9 and the rear chamber 4, so that the push rod 2 is pushed toward the clutch pump 2, and the clutch pump 2 is driven.
  • a brake signal is sent to the ABS to realize the brake assist.
  • the amount of brake boost can be calculated based on the actual wheel speed to control the amount of air input by the air pump 8 to achieve an accurate braking effect.
  • the air pump 8 can suck out air to restore the front chamber 9 to a vacuum state, thereby eliminating the pressure difference between the front chamber 9 and the rear chamber 4, and no brake assist is performed.
  • the present invention connects an air pump supercharger on the basis of the original brake vacuum booster pump, provides a certain air pressure for the vacuum booster pump, increases the pressure difference between the two sides of the vacuum booster pump, and can reduce the manual braking force. The operator can easily achieve the brake; Secondly, it can provide the safety and reliability of the brake to ensure the safety of the vehicle.
  • the structure of the present invention is simple and easy to implement, and can be widely applied to existing brake braking of automobiles.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Braking Systems And Boosters (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Abstract

一种用于汽车刹车的助力装置，包括有真空助力泵，该装置还包括有输气管（7）及空气泵（8），所述输气管（7）设置于真空助力泵的前腔（9），一端接通于真空助力泵的前腔（9），另一端接通空气泵（8），通过空气泵（8）向真空助力泵的前腔（9）输入空气，以在制动过程中产生压力差，从而达到助力制动的效果。

Description

说 明 书
用于汽车刹车的助力装置
技术领域
本发明涉及一种汽车刹车助力系统，特别是用于汽车刹车制动的 气动助力装置。
背景技术
为了减少汽车制动时的人工制动力，通常会在汽车上配置刹车助 力装置来提供辅助的动力及提供刹车的安全性。 对于刹车助力装置， 通常有液压和气动两种方式， 液压助力方式， 是通过液压泵推动活塞 来提供制动力，气动方式的工作原理是：刹车助力泵中间设置一膜片， 泵被膜片分成两部分， 一部分与大气相通， 另一部分通过管道与发动 机进气管相连，发动机工作时吸入空气，造成刹车助力泵的一侧真空， 另一侧为正常工作气压， 两者之间形成压力差， 利用压力差加强制动 力， 减少人工制动力。
例如专利申请 201120465361.5所描述的一种真空助力泵及离合 总泵， 该真空助力泵包括： 壳体、 抽真空管、 伺服活塞、 连接杆和控 制阀。伺服活塞包括固定有伺服膜片的盘状活塞头部和内部安装有控 制阀的活塞杆部。 控制阀包括： 反馈柱塞， 可前、 后移动地安装在所 述活塞头部的中央通孔； 阀杆， 其前端部位于反馈柱塞的容置槽内； 阀体， 其前端面设有凸环， 凸环能够与反馈柱塞的后端面接触配合， 形成大气阀， 活塞头部具有连接前腔和后腔的通道， 活塞头部上邻近 通道位置具有凸出部， 凸出部能够与阀体前端面外侧配合， 形成真空 阀。 离合总泵通过真空助力泵在前腔与后腔形成压力差， 该压力差推 动连接的运动， 起到助力作用。
但此种方式需要单独设置一真空助力泵，且该泵的连接杆与离合 总泵的推杆相连， 才能起到助力的作用， 这样一是增加了制作成本， 而是需要真空助力泵及离合总泵的结构配合， 安装成本也会提高。 发明内容 针对上述缺陷， 本发明的首要目的在于提供一种结构筒单、 易于 实现、便于控制的用于汽车刹车的助力装置， 该装置方便人们轻松实 现汽车刹车的助力制动。
本发明的另一个目地在于提供一种用于汽车刹车的助力装置，该 装置能够准确测量助力鼓两侧的压力差，并结合智能控制装置控制放 气速率， 以实现对刹车制动的助力的精确控制。
为了达到上述目地， 本发明是按照以下方式实现的。
一种用于汽车刹车的助力装置， 其包括有真空助力泵， 其特征在 于该装置还包括有输气管及空气泵，所述输气管设置于真空助力泵的 前腔， 一端接通于真空助力泵的前腔， 另一端接通空气泵， 通过空气 泵向真空助力泵的前腔输入空气， 以在制动过程中产生压力差，从而 达到助力制动的效果。
所述真空助力泵的前腔和后腔上还设置有压力传感器， 以测量真 空助力泵前腔和后腔的压力差。 更进一步， 所述压力传感器连接于差压测量计上， 用以准确显示 真空助力泵前腔和后腔之间的压力差。
所述空气泵， 还可电连接于智能控制装置， 用以接收控制指令， 准确控制前腔和后腔之间的压力差， 从而达到准确助力制动的效果。
上述的智能控制装置， 可与轮速结合起来， 准确计算需要的制动 压力差， 以保障车辆行驶的安全性。
通过上述的结构，本发明在原来的刹车真空助力泵的基础上上连 接一空气泵增压， 为真空助力泵提供一定的空气压力， 增加真空助力 泵两侧的压力差， 一能够减少人工制动力，使操作人员轻松的实现制 动； 二能够提供制动的安全性和可靠性， 保障车辆行驶的安全。 附图说明
图 1为本发明实施的结构示意图。 具体实施方式
下面， 结合附图对本发明的具体实施进行详细说明， 应当理解， 此处所描述的具体实施例仅仅用以解释本发明， 并不用于限定本发 明。
图 1所示， 为本发明的具体实施为汽车真空助力的结构方式， 图 中所示， 构成本发明的主要结构有： 真空助力泵（包括有前腔 9及后 腔 4 )、 输气管 7、 空气泵 8、 前腔压力传感器 13、 后腔压力传感器 12及差压测量计 11。 真空助力泵内设有一贯穿的推杆 2,推杆 2的一端连接离合泵 1 , 推杆 2的另一端则连接离合器 10。 真空助力泵内还设置有膜片 5 , 通 过膜片 5将真空助力泵的内部分隔成前腔 9和后腔 4; 在推杆 2与膜 片 5接触的位置上设置有膜瓣 6。
通常， 在真空助力泵前腔 9的上部开始一缺口， 通过此缺口接通 输气管 7, 输气管 7再接通空气泵 8。 在实际的应用中， 可在前腔 9 的任意一个位置设置输气管 7, 只要不影响其它部件的设置均可。
真空助力泵的前腔和后腔上还设置有前腔压力传感器 13、后腔压 力传感器 12, 前腔压力传感器 13和后腔压力传感器 12均连接于差 压测量计 11上，用以准确显示真空助力泵前腔和后腔之间的压力差。
根据需要，还可将空气泵 8电连接于智能控制装置（图中未示）， 用以接收控制指令， 准确控制前腔和后腔之间的压力差，从而达到准 确助力制动的效果。 而且， 智能控制装置可与轮速结合起来， 准确计 算需要的制动压力差， 以保障车辆行驶中制动的安全性。
制动工作时， 空气泵 8运转， 通过输气管 7向前腔 9输入空气， 使前腔 9和后腔 4之间形成压力差，从而使推杆 2向离合泵 2方向推 动， 离合泵 2接收到推杆的作用后， 向 ABS发出制动信号， 从而实 现制动助力。制动助力的大小可以根据实际的轮速计算所需要的压力 差， 从而控制空气泵 8输入空气的量， 以达到准确制动的效果。
制动后， 空气泵 8可吸出空气， 使前腔 9恢复真空状态， 从而消 除前腔 9和后腔 4之间的压力差， 不再进行制动助力。 总之，本发明在原来的刹车真空助力泵的基础上上连接一空气泵 增压， 为真空助力泵提供一定的空气压力， 增加真空助力泵两侧的压 力差， 一能够减少人工制动力， 使操作人员轻松的实现制动； 二能够 提供制动的安全性和可靠性， 保障车辆行驶的安全。
且本发明结构筒单、 易于实现， 可广泛应用于现有的汽车刹车制 动中。
以上所述仅为本发明的较佳实施例而已， 并不用以限制本发明， 凡在本发明的精神和原则之内所作的任何修改、 等同替换和改进等， 均应包含在本发明的保护范围之内。

Claims

权 利 要 求 书
1、 一种用于汽车刹车的助力装置， 其包括有真空助力泵， 其特 征在于该装置还包括有输气管及空气泵，所述输气管设置于真空助力 泵的前腔， 一端接通于真空助力泵的前腔， 另一端接通空气泵。
2、 如权利要求 1所述的用于汽车刹车的助力装置， 其特征在于 所述真空助力泵的前腔和后腔上还设置有压力传感器，以测量真空助 力泵前腔和后腔的压力差。
3、 如权利要求 2所述的用于汽车刹车的助力装置， 其特征在于 所述压力传感器连接于差压测量计上。
4、 如权利要求 1所述的用于汽车刹车的助力装置， 其特征在于 所述空气泵， 还可电连接于智能控制装置， 用以接收控制指令， 准确 控制前腔和后腔之间的压力差。
PCT/CN2013/088011 2013-11-28 2013-11-28 用于汽车刹车的助力装置 WO2015077950A1 (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106043260A (zh) * 2016-06-30 2016-10-26 南京工程学院 一种电动汽车用真空助力制动的动力装置
CN106240544A (zh) * 2016-10-12 2016-12-21 合肥工业大学 一种电机与真空双助力制动器

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Publication number Priority date Publication date Assignee Title
US3724910A (en) * 1971-09-29 1973-04-03 Bendix Corp Cam operated control
CN1923586A (zh) * 2006-09-19 2007-03-07 上海港机重工有限公司 液压制动机构及其真空助力刹车系统
CN101016049A (zh) * 2007-03-01 2007-08-15 北京航空航天大学 气压式刹车辅助器
CN201350900Y (zh) * 2008-12-12 2009-11-25 长春科威机械有限责任公司 汽车制动真空辅助装置
CN201457357U (zh) * 2009-08-01 2010-05-12 魏星 汽车制动全工况伺服器

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3724910A (en) * 1971-09-29 1973-04-03 Bendix Corp Cam operated control
CN1923586A (zh) * 2006-09-19 2007-03-07 上海港机重工有限公司 液压制动机构及其真空助力刹车系统
CN101016049A (zh) * 2007-03-01 2007-08-15 北京航空航天大学 气压式刹车辅助器
CN201350900Y (zh) * 2008-12-12 2009-11-25 长春科威机械有限责任公司 汽车制动真空辅助装置
CN201457357U (zh) * 2009-08-01 2010-05-12 魏星 汽车制动全工况伺服器

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106043260A (zh) * 2016-06-30 2016-10-26 南京工程学院 一种电动汽车用真空助力制动的动力装置
CN106240544A (zh) * 2016-10-12 2016-12-21 合肥工业大学 一种电机与真空双助力制动器

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