WO2021174521A1 - 内置式磁性过滤组件和离合器分离系统 - Google Patents

内置式磁性过滤组件和离合器分离系统 Download PDF

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Publication number
WO2021174521A1
WO2021174521A1 PCT/CN2020/078145 CN2020078145W WO2021174521A1 WO 2021174521 A1 WO2021174521 A1 WO 2021174521A1 CN 2020078145 W CN2020078145 W CN 2020078145W WO 2021174521 A1 WO2021174521 A1 WO 2021174521A1
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Prior art keywords
magnetic filter
press
built
filter element
clutch
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PCT/CN2020/078145
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English (en)
French (fr)
Inventor
菅桄誉
徐志力
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舍弗勒技术股份两合公司
菅桄誉
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Application filed by 舍弗勒技术股份两合公司, 菅桄誉 filed Critical 舍弗勒技术股份两合公司
Priority to CN202080094816.9A priority Critical patent/CN115038889A/zh
Priority to KR1020227031953A priority patent/KR20220143079A/ko
Priority to PCT/CN2020/078145 priority patent/WO2021174521A1/zh
Priority to US17/909,620 priority patent/US20230313845A1/en
Priority to DE112020006861.7T priority patent/DE112020006861T5/de
Publication of WO2021174521A1 publication Critical patent/WO2021174521A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/28—Magnetic plugs and dipsticks
    • B03C1/286—Magnetic plugs and dipsticks disposed at the inner circumference of a recipient, e.g. magnetic drain bolt
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/12—Details not specific to one of the before-mentioned types
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/30—Combinations with other devices, not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C2201/00—Details of magnetic or electrostatic separation
    • B03C2201/18—Magnetic separation whereby the particles are suspended in a liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C2201/00—Details of magnetic or electrostatic separation
    • B03C2201/30—Details of magnetic or electrostatic separation for use in or with vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
    • F16D2025/081—Hydraulic devices that initiate movement of pistons in slave cylinders for actuating clutches, i.e. master cylinders

Definitions

  • the present invention relates to the field of clutches, and particularly to a built-in magnetic filter assembly and a clutch release system including the built-in magnetic filter assembly.
  • the Chinese utility model CN205937569U records a clutch master cylinder oil intake structure with a filter screen, which includes the cylinder block oil inlet port of the CMC (clutch release master cylinder), a filter screen assembly and a corrugated oil inlet pipe.
  • a filter screen which includes the cylinder block oil inlet port of the CMC (clutch release master cylinder), a filter screen assembly and a corrugated oil inlet pipe.
  • One end of the filter screen assembly is inserted into the inside of the oil inlet port of the cylinder body, and the other end is connected between the end surface of the oil inlet port of the cylinder body and the corrugated oil inlet pipe.
  • the working fluid is filtered by the filter screen assembly from the corrugated oil inlet pipe, it enters the CMC through the gap between the filter screen assembly and the inner wall of the cylinder oil inlet interface.
  • the filter screen assembly is installed at the connection position of the cylinder oil inlet port of the CMC and the low pressure pipe.
  • the MCA Modular Clutch Actuator
  • the filter screen assembly is no longer applicable.
  • the filter screen assembly uses a filter screen to achieve the filtering function. Due to the system efficiency, the filter hole of the filter screen should not be too small, resulting in the inability to filter fine metal impurities with a size smaller than the size of the filter hole.
  • impurities previously filtered by the filter mesh assembly may flow back with the working fluid.
  • the purpose of the present invention is to overcome or at least alleviate the above-mentioned shortcomings of the prior art, and provide a built-in magnetic filter assembly for a clutch separation system with good filtering effect and a wide range of applications and a clutch separation including the built-in magnetic filter assembly system.
  • the built-in magnetic filter assembly includes an air release valve of the clutch release system and a magnetic filter element.
  • the air release valve has a housing, The housing includes a pipe section through which the working fluid passes, the magnetic filter element is installed on the inner circumferential wall of the pipe section, and the magnetic filter element can be in contact with the working fluid to attract metal impurities in the working fluid.
  • the built-in magnetic filter assembly includes a press-in part installed on the inner peripheral wall, the inner peripheral wall has a first step, and the first step and the press-in The magnetic filter element is positioned in the flow direction of the working fluid when the working fluid flows in the housing.
  • the built-in magnetic filter assembly includes a circlip, and the circlip is used to fix the magnetic filter element in the housing.
  • the inner peripheral wall has a first slope, the first slope is located outside the first step in the flow direction, and the pipe section is located in the first step in the flow direction.
  • the inner diameter dimension D 3 of the outer part of the slope is greater than the inner diameter dimension D 2 of the part located outside the first step and inside the first slope, and one end of the press-in part close to the magnetic filter element has a guide A slope, the guide slope and the first slope have the same inclination direction.
  • the press-in member is cylindrical, the outer peripheral wall of the press-in member has a plurality of annular flanges arranged at intervals along the flow direction, and the press-in member passes through the plurality of annular flanges.
  • the annular flange is interference fit with the pipe section.
  • the outer surface of the press-in part can also be provided with a threaded structure, and the inner peripheral wall matched with the press-in part is provided with a threaded structure that matches the thread structure of the press-in part.
  • a threaded connection structure is formed between the part and the inner peripheral wall.
  • the press-in part and the inner peripheral wall are snap-connected.
  • the press-in part and the housing of the bleed valve are both made of plastic, and the hardness of the plastic of the housing made of the bleed valve is greater than that of the housing made of the bleed valve. The hardness of the plastic of the press-in part.
  • the radial dimension is greater than or equal to the radial dimension of the part located at the radial inner side of the press-in part.
  • the air release valve has a high-pressure pipe interface
  • the pipe section includes a first pipe section connected to the high-pressure pipe interface
  • the magnetic filter element and the press-in member are connected to the first pipe section.
  • Pipe section is
  • the magnetic filter element is cylindrical, and the magnetic filter element is in clearance fit or contact fit with the inner peripheral wall of the housing.
  • a clutch release system is also provided, which includes the built-in magnetic filter assembly according to any one of the above technical solutions.
  • the clutch release system further includes:
  • a clutch master cylinder or modular clutch actuator connected to one end of the housing;
  • the clutch sub-cylinder connected to the other end of the housing.
  • the fine metal impurities in the working fluid flowing from the oil storage tank to the clutch release system and from the clutch release system to the oil storage tank can be attracted by the magnetic filter element; and compared to the filter type filter device, the built-in magnetic filter
  • the component basically does not block the flow of the working fluid, so that the influence on the flow of the working fluid is small, and the built-in magnetic filter assembly can be used whether it is a manual clutch or an electronic clutch.
  • the first step and the press-in piece position the magnetic filter element in the flow direction, which simplifies the positioning structure of the magnetic filter element.
  • the arrangement of the annular flange can appropriately reduce the interference area.
  • the magnetic filter element is arranged in the wider first pipe section, so that the operation is more convenient and the influence on the flow of the working fluid is small.
  • the radial dimension of the portion of the passage located on the radially inner side of the magnetic filter element is greater than or equal to the radial size of the portion located on the radially inner side of the press-in part. In this way, when the magnetic filter element attracts metal impurities, the flow of the working fluid is basically not affected.
  • Figure 1a is a cross-sectional view of a built-in magnetic filter assembly provided by the present disclosure.
  • Figure 1b is a cross-sectional view of the housing of the purge valve.
  • Fig. 2 is a schematic diagram of a three-dimensional structure of a magnetic filter element.
  • Fig. 3 is a schematic diagram of the three-dimensional structure of the press-in part.
  • the present disclosure provides a built-in magnetic filter assembly for a clutch release system.
  • the built-in magnetic filter assembly includes a release valve 1, a magnetic filter element 2 and a press-in Piece 3.
  • the bleed valve 1 is used to discharge the gas inside the clutch release system. It includes a housing.
  • the housing includes a pipe section for working fluid to flow.
  • the housing is provided with a bleed port 15, a high-pressure pipe interface 13, and a clutch auxiliary cylinder interface 14.
  • the above-mentioned pipe section includes a first pipe section 11 connected with the high-pressure pipe interface 13 and a second pipe section 12 connected with the clutch auxiliary cylinder interface 14.
  • the housing of the air release valve 1 is made of a non-magnetizable material, such as plastic.
  • the high-pressure pipe interface 13 is used to connect the high-pressure pipe, the high-pressure pipe is connected to the clutch master cylinder, and the clutch auxiliary cylinder interface 14 is used to directly connect to the clutch auxiliary cylinder.
  • the inner diameter of the high-pressure pipe interface 13 is larger than the inner diameter of the clutch auxiliary cylinder interface 14, so that the high-pressure pipe interface 13 functions as a female interface when connected with the high-pressure pipe, and the clutch auxiliary cylinder interface 14 functions as a male interface when connected with the clutch auxiliary cylinder. The role of the interface.
  • the magnetic filter element 2 is connected to the inner peripheral wall of the housing of the purge valve 1.
  • the magnetic filter element 2 can contact the working fluid in the purge valve 1.
  • the metal impurities in the working fluid It is attracted by the magnetic filter element 2 to purify the working fluid flowing to the clutch release system and returning to the oil storage tank.
  • the built-in magnetic filter assembly basically does not block the flow of the working fluid, so that it has a small impact on the flow of the working fluid, and both manual clutches and electronic clutches can use the built-in magnetic filter assembly.
  • the “flow direction” mentioned herein includes the direction in which the working fluid flows from the high-pressure pipe interface 13 to the clutch auxiliary cylinder interface 14 and the direction in which the working fluid flows from the clutch auxiliary cylinder interface 14 to the high-pressure pipe interface 13.
  • the “outside in the flow direction” of the first pipe section 11a refers to the side closer to the high-pressure pipe interface 13 in the flow direction.
  • the “outside in the flow direction” of the second pipe section 11b refers to the side closer to the clutch sub-cylinder interface 14 in the flow direction.
  • the inner peripheral wall of the first pipe section 11 has a first step 11 a and a first slope 11 b, and the first step 11 a and the first slope 11 b are formed on the inner peripheral wall of the first pipe section 11 all around.
  • the first slope 11b and the first step 11a are arranged at intervals in the flow direction, and the first slope 11b is located outside the first step 11a in the flow direction, that is, the first slope 11b is closer to the high pressure pipe interface 13 than the first step 11a.
  • the inner diameter dimension D of the first tube section 11 is located outside of the first slope 11b in the flow direction of the portion is larger than the inner diameter dimension D. 3 located outside the first step 11a and 11b located inside the first ramp portion 2.
  • the first tube section 11 is located outside the first step 11a in the flow direction and located inside the first slope portion 11b of the inner diameter dimension D 2 is larger than the first step portion 11a is located inside the inner diameter dimension D 1.
  • the press-in part 3 is connected to the inner peripheral wall of the air release valve 1, and specifically may be connected to the inner peripheral wall of the first pipe section 11.
  • the press-in part 3 may be cylindrical, and the outer peripheral wall of the press-in part 3 has a plurality of annular flanges 32 arranged at intervals along the flow direction.
  • the two ends of the press-in part 3 may have guiding slopes 31, which are adapted to the first slope 11b, that is, the guiding slope 31 and the first slope 11b have the same inclination direction, and the inclination angles of the two can also be the same.
  • the guide slope 31 of the end of the press-in part 3 close to the magnetic filter element 2 approaches the first slope 11b, the first slope 11b and the other part of the press-in part 3
  • the guide slope 31 plays a role of guiding the press-in part 3, and the wider space of the first slope 11 b on the outside in the flow direction of the first pipe section 11 facilitates the installation of the press-in part 3.
  • the end of the press-in part 3 close to the magnetic filter element 2 and the end far away from the magnetic filter element 2 are both provided with guide slopes 31, so that the press-in part 3 has high practicability.
  • the front end can play the role of guiding the press-in part 3.
  • the press-in part 3 may be made of, for example, plastic, and the hardness of the press-in part 3 may be less than the hardness of the housing of the air release valve 1.
  • the press-in part 3 can be interference-fitted with the air release valve 1, and the arrangement of the annular flange 32 can appropriately reduce the interference area.
  • the first step 11a and the press-in part 3 position the magnetic filter element 2 in the flow direction, which simplifies the positioning structure of the magnetic filter element 2.
  • the outer surface of the press-in part 3 may also be provided with a threaded structure, and the inner peripheral wall matched with the press-in part 3 is provided with a threaded structure that matches the thread structure of the press-in part 3.
  • a threaded connection structure is formed between the press-in part 3 and the inner peripheral wall.
  • the press-in part and the inner peripheral wall are snap-connected.
  • the magnetic filter element 2 is provided in a pipe section (for example, the second pipe section 12) that does not have the first step 11a of the air release valve 1, and passes through two press-in parts 3. position.
  • the magnetic filter element 2 is arranged in the wider first pipe section 11, so that the operation is more convenient and the influence on the flow of the working fluid is small.
  • the magnetic filter element 2 may be cylindrical.
  • the magnetic filter element 2 can be in contact or clearance fit with the inner peripheral wall of the air release valve 1.
  • the magnetic filter element 2 is in the radial direction (perpendicular to the flow direction).
  • the radial inner side of the magnetic filter element 2 and the radial inner side of the press-in part 3 have a passage for the working fluid to flow, and the radial dimension of the part of the passage located at the radial inner side of the magnetic filter element 2 is greater than or equal to that of the press-in part 3 is the radial dimension of the radially inner part.
  • the diameter of the inner hole of the magnetic filter element 2 may be greater than or equal to the inner hole of the press-in part 3. In this way, when the magnetic filter element 2 attracts metal impurities, the flow rate of the working fluid is basically not affected.
  • the above-mentioned magnetic filter element 2 may be a magnet.
  • the present disclosure also provides a clutch release system with the above-mentioned built-in magnetic filter assembly.
  • the clutch release system also includes a clutch master cylinder or a modular clutch actuator connected to one end of the housing of the air release valve 1, and a clutch actuator connected to the housing The clutch auxiliary cylinder at the other end.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Magnetically Actuated Valves (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)

Abstract

一种用于过滤离合器分离系统的工作液的内置式磁性过滤组件，包括放气阀（1）和磁性过滤元件（2），放气阀具有壳体，壳体包括工作液流过的管段，磁性过滤元件安装在管段的内周壁。一种离合器分离系统也被公开。

Description

内置式磁性过滤组件和离合器分离系统 技术领域
本发明涉及离合器领域，且特别地涉及一种内置式磁性过滤组件和包括该内置式磁性过滤组件的离合器分离系统。
背景技术
中国实用新型CN205937569U记载了一种带滤网的离合器主缸进油结构，其包括CMC(离合器分离主缸)的缸体进油接口、过滤网组件和波纹进油管。过滤网组件的一端插入到缸体进油接口的内部，另一端连接到缸体进油接口的端面和波纹进油管之间。工作液从波纹进油管经过滤网组件的过滤后，通过过滤网组件和缸体进油接口内壁间的间隙进入到CMC内。
上述现有技术存在以下缺陷：
第一，过滤网组件安装在CMC的缸体进油接口与低压管的连接位置，在电子离合器中采用MCA(模块化离合器执行器)替代CMC，该过滤网组件不再适用。
第二，过滤网组件使用过滤网实现过滤功能，由于要兼顾系统效率，过滤网的过滤孔不宜过小，导致无法过滤尺寸小于过滤孔的尺寸的细小的金属杂质。
第三，在工作液从离合器主缸向储油罐回流的过程中，先前被过滤网组件过滤的杂质可能随工作液回流。
发明内容
本发明的目的在于克服或至少减轻上述现有技术存在的不足，提供一种过滤效果好、适用范围广的用于离合器分离系统的内置式磁性过滤组件和包 括该内置式磁性过滤组件的离合器分离系统。
提供一种内置式磁性过滤组件，用于过滤离合器分离系统的工作液，所述内置式磁性过滤组件包括所述离合器分离系统的放气阀和磁性过滤元件，所述放气阀具有壳体，所述壳体包括供工作液通过的管段，所述磁性过滤元件安装于所述管段的内周壁，所述磁性过滤元件能够与所述工作液接触以吸引所述工作液内的金属杂质。
在至少一个实施方式中，所述内置式磁性过滤组件包括压入件，所述压入件安装于所述内周壁，所述内周壁具有第一台阶，所述第一台阶和所述压入件在所述工作液在所述壳体内流动时的流动方向上定位所述磁性过滤元件。替代地，所述内置式磁性过滤组件包括卡簧，卡簧用以将所述磁性过滤元件固定在壳体内。
在至少一个实施方式中，所述内周壁具有第一斜坡，所述第一斜坡在所述流动方向上位于所述第一台阶的外侧，所述管段在所述流动方向上位于所述第一斜坡的外侧的部分的内径尺寸D 3大于位于第一台阶的外侧且位于所述第一斜坡的内侧的部分的内径尺寸D 2，所述压入件的靠近所述磁性过滤元件的一端具有导向斜坡，所述导向斜坡与所述第一斜坡的倾斜方向相同。
在至少一个实施方式中，所述压入件为筒状，所述压入件的外周壁具有沿所述流动方向间隔设置的多个环状凸缘，所述压入件通过所述多个环状凸缘与所述管段过盈装配。
替代地，压入件的外表面也可以设置成螺纹结构，而与压入件配合的内周壁设置有与压入件的螺纹结构相匹配的螺纹结构，当压入件安装完成后，压入件与内周壁之间形成螺纹连接结构。或者，所述压入件与内周壁之间卡扣连接。
在至少一个实施方式中，所述压入件和所述放气阀的所述壳体均由塑料制成，制成所述放气阀的所述壳体的塑料的硬度大于制成所述压入件的塑料 的硬度。
在至少一个实施方式中，在所述磁性过滤元件和所述压入件的径向内侧具有供所述工作液流动的通路，所述通路位于所述磁性过滤元件的径向内侧的部分的径向尺寸大于或者等于位于所述压入件的径向内侧的部分的径向尺寸。
在至少一个实施方式中，所述放气阀具有高压管接口，所述管段包括与所述高压管接口连接的第一管段，所述磁性过滤元件和所述压入件连接于所述第一管段。
在至少一个实施方式中，所述磁性过滤元件为筒状，所述磁性过滤元件与所述壳体的内周壁间隙配合或者接触配合。
还提供一种离合器分离系统，其包括上述技术方案中任一项所述的内置式磁性过滤组件。
在至少一个实施方式中，所述离合器分离系统还包括：
连接至所述壳体的一端的离合器主缸或模块化离合器执行器；以及
连接至所述壳体的另一端的离合器副缸。
上述技术方案至少具有以下有益效果：
从储油罐流向离合器分离系统和从离合器分离系统流向储油罐的工作液内的细小的金属杂质均能够被磁性过滤元件吸引；而且相比于滤网式的过滤装置，该内置式磁性过滤组件基本不会阻挡工作液的流动从而对工作液的流量的影响较小，且无论是手动离合器还是电子离合器均能够使用该内置式磁性过滤组件。
上述技术方案还可以具有以下有益效果：
第一台阶和压入件在流动方向上定位磁性过滤元件，这简化了磁性过滤元件的定位结构。
环状凸缘的设置能够适当地减少过盈面积。
将磁性过滤元件设于更宽阔的第一管段，这样操作更方便且对工作液的流量影响较小。
通路的位于磁性过滤元件的径向内侧的部分的径向尺寸大于或者等于位于压入件的径向内侧的部分的径向尺寸。这样，当磁性过滤元件吸引金属杂质时，工作液的流量基本不受影响。
附图说明
图1a为本公开提供的内置式磁性过滤组件的剖视图。
图1b为放气阀的壳体的剖视图。
图2为磁性过滤元件的立体结构示意图。
图3为压入件的立体结构示意图。
附图标记说明：
1放气阀、11第一管段、11a第一台阶、11b第一斜坡、12第二管段、13高压管接口、14CSC接口、15放气口、2磁性过滤元件、3压入件、31导向斜坡、32环状凸缘。
具体实施方式
下面参照附图描述本发明的示例性实施方式。
如图1a和图1b所示，本公开提供了一种用于离合器分离系统的内置式磁性过滤组件，该内置式磁性过滤组件包括离合器分离系统的放气阀1、磁性过滤元件2和压入件3。放气阀1用于排出离合器分离系统内部的气体，其包括壳体，壳体包括供工作液流动的管段，在壳体上设有放气口15、高压管接口13和离合器副缸接口14，上述管段包括与高压管接口13连接的第一管段11和与离合器副缸接口14连接的第二管段12。放气阀1的壳体由不可磁化的材料，例如塑料制成。
高压管接口13用于连接高压管，高压管连接于离合器主缸，离合器副缸接口14用于直接连接至离合器副缸。高压管接口13的内径尺寸大于离合器副缸接口14的内径尺寸，从而高压管接口13在与高压管连接时起到母接口的作用，离合器副缸接口14在与离合器副缸连接时起到公接口的作用。
磁性过滤元件2连接于放气阀1的壳体的内周壁，磁性过滤元件2能够与放气阀1内的工作液接触，当工作液流过放气阀1时，工作液内的金属杂质被磁性过滤元件2吸引，从而净化流向离合器分离系统和向储油罐回流的工作液。
这样，从储油罐流向离合器分离系统和从离合器分离系统流向储油罐的工作液内的细小的金属杂质均能够被磁性过滤元件2吸引；而且相比于滤网式的过滤装置，该内置式磁性过滤组件基本不会阻挡工作液的流动从而对工作液的流量的影响较小，且无论是手动离合器还是电子离合器均能够使用该内置式磁性过滤组件。
工作液中的金属杂质可能会导致密封构件被腐蚀，因而，该内置式磁性过滤组件具有重要意义。
说明，本文所述“流动方向”包括工作液从高压管接口13流向离合器副缸接口14的方向和从离合器副缸接口14流向高压管接口13的方向。第一管段11a的“流动方向上的外侧”指在流动方向上更靠近高压管接口13的一侧。第二管段11b的“流动方向上的外侧”指在流动方向上更靠近离合器副缸接口14的一侧。
第一管段11的内周壁具有第一台阶11a和第一斜坡11b，第一台阶11a和第一斜坡11b在第一管段11的内周壁整周地形成。第一斜坡11b和第一台阶11a在流动方向上间隔设置，第一斜坡11b在流动方向上位于第一台阶11a的外侧，即第一斜坡11b比第一台阶11a靠近高压管接口13。
第一管段11在流动方向上位于第一斜坡11b的外侧的部分的内径尺寸D 3 大于位于第一台阶11a的外侧且位于第一斜坡11b的内侧的部分的内径尺寸D 2。第一管段11在流动方向上位于第一台阶11a的外侧且位于第一斜坡11b的内侧的部分的内径尺寸D 2大于位于第一台阶11a的内侧的部分的内径尺寸D 1。
如图1a、图1b和图3所示，压入件3连接于放气阀1的内周壁，具体地可以连接于第一管段11的内周壁。压入件3可以为筒状，压入件3的外周壁具有沿流动方向间隔设置的多个环状凸缘32。压入件3的两端可以具有导向斜坡31，导向斜坡31与第一斜坡11b适配，即导向斜坡31与第一斜坡11b的倾斜方向相同，二者的倾斜角度也可以相同。
当将压入件3安装到放气阀1时，压入件3的靠近磁性过滤元件2的一端的导向斜坡31先于压入件3的其他部分靠近第一斜坡11b，第一斜坡11b和导向斜坡31起到导向压入件3的作用，且第一斜坡11b的在第一管段11的流动方向上的外侧的更宽阔的空间有利于压入件3的安装。
压入件3的靠近磁性过滤元件2的一端和远离磁性过滤元件2的一端均设有导向斜坡31，从而压入件3具有较高的实用性，两端中的任一端作为插入方向上的前端时均能够起到对压入件3导向的作用。
压入件3可以由例如塑料制成，压入件3的硬度可以小于放气阀1的壳体的硬度。压入件3可以与放气阀1过盈装配，环状凸缘32的设置能够适当地减少过盈面积。
第一台阶11a和压入件3在流动方向上定位磁性过滤元件2，这简化了磁性过滤元件2的定位结构。
替代地，压入件3的外表面也可以设置成螺纹结构，而与压入件3配合的内周壁设置有与压入件3的螺纹结构相匹配的螺纹结构，当压入件3安装完成后，压入件3与内周壁之间形成螺纹连接结构。或者，所述压入件与内周壁之间卡扣连接。
在其他实施方式中，还可以采用其他的定位方式，比如磁性过滤元件2 设于放气阀1的不具有第一台阶11a的管段(例如第二管段12)，并通过两个压入件3定位。
将磁性过滤元件2设于更宽阔的第一管段11，这样操作更方便且对工作液的流量影响较小。
如图1a、图1b和图2所示，磁性过滤元件2可以为筒状。磁性过滤元件2可以与放气阀1的内周壁接触配合或者间隙配合，当磁性过滤元件2与放气阀1的内周壁接触配合时，磁性过滤元件2在径向(垂直于流动方向)上固定不动；当磁性过滤元件2与放气阀1的内周壁间隙配合时，磁性过滤元件2在径向上发生轻微的晃动，该晃动基本不影响对金属杂质的吸引和工作液的流动。
磁性过滤元件2的径向内侧和压入件3的径向内侧具有供工作液流动的通路，该通路的位于磁性过滤元件2的径向内侧的部分的径向尺寸大于或者等于位于压入件3的径向内侧的部分的径向尺寸。在磁性过滤元件2的内孔和压入件3的内孔均是圆孔的情况下，磁性过滤元件2的内孔的孔径可以大于或等于压入件3的内孔的孔径。这样，当磁性过滤元件2吸引金属杂质时，工作液的流量基本不受影响。
具体地，上述磁性过滤元件2可以为磁铁。
本公开还提供具有上述内置式磁性过滤组件的离合器分离系统，该离合器分离系统还包括连接至放气阀1的壳体的一端的离合器主缸或模块化离合器执行器，以及连接至壳体的另一端的离合器副缸。
当然，本发明不限于上述实施方式，本领域技术人员在本发明的教导下可以对本发明的上述实施方式做出各种变型，而不脱离本发明的范围。

Claims (10)

  1. 一种内置式磁性过滤组件，用于过滤离合器分离系统的工作液，其中，所述内置式磁性过滤组件包括所述离合器分离系统的放气阀(1)和磁性过滤元件(2)，所述放气阀(1)具有壳体，所述壳体包括供工作液通过的管段，所述磁性过滤元件(2)安装于所述管段的内周壁，所述磁性过滤元件(2)能够与所述工作液接触以吸引所述工作液内的金属杂质。
  2. 根据权利要求1所述的内置式磁性过滤组件，其特征在于，所述内置式磁性过滤组件包括压入件(3)，所述压入件(3)安装于所述内周壁，所述内周壁具有第一台阶(11a)，所述第一台阶(11a)和所述压入件(3)在所述工作液在所述壳体内流动时的流动方向上定位所述磁性过滤元件(2)；或者，
    所述内置式磁性过滤组件包括卡簧，卡簧用以将所述磁性过滤元件(2)固定在壳体内。
  3. 根据权利要求2所述的内置式磁性过滤组件，其特征在于，所述内周壁具有第一斜坡(11b)，所述第一斜坡(11b)在所述流动方向上位于所述第一台阶(11a)的外侧，所述管段在所述流动方向上位于所述第一斜坡(11b)的外侧的部分的内径尺寸D 3大于位于第一台阶(11a)的外侧且位于所述第一斜坡(11b)的内侧的部分的内径尺寸D 2，所述压入件(3)的靠近所述磁性过滤元件(2)的一端具有导向斜坡(31)，所述导向斜坡(31)与所述第一斜坡(11b)的倾斜方向相同。
  4. 根据权利要求2所述的内置式磁性过滤组件，其特征在于，所述压入件(3)为筒状，所述压入件(3)的外周壁具有沿所述流动方向间隔设置的多个环状凸缘(32)，所述压入件(3)通过所述多个环状凸缘(32)与所述管段过盈装配；或者，所述压入件(3)的外周壁具有螺纹，而内周壁上设置有对应的螺纹结构，所述压入件(3)与内周壁螺纹连接；或者，所述压 入件与内周壁之间卡扣连接。
  5. 根据权利要求2所述的内置式磁性过滤组件，其特征在于，所述压入件(3)和所述放气阀(1)的所述壳体均由塑料制成，制成所述放气阀(1)的所述壳体的塑料的硬度大于制成所述压入件(3)的塑料的硬度。
  6. 根据权利要求2所述的内置式磁性过滤组件，其特征在于，在所述磁性过滤元件(2)和所述压入件(3)的径向内侧具有供所述工作液流动的通路，所述通路位于所述磁性过滤元件(2)的径向内侧的部分的径向尺寸大于或者等于位于所述压入件(3)的径向内侧的部分的径向尺寸。
  7. 根据权利要求2所述的内置式磁性过滤组件，其特征在于，所述放气阀设置位于离合器主缸与离合器副缸之间，所述放气阀(1)具有高压管接口(13)，所述管段包括与所述高压管接口(13)连接的第一管段(11)，所述磁性过滤元件(2)和所述压入件(3)连接于所述第一管段(11)。
  8. 根据权利要求1所述的内置式磁性过滤组件，其特征在于，所述磁性过滤元件(2)为筒状，所述磁性过滤元件(2)与所述壳体的内周壁间隙配合或者接触配合。
  9. 一种离合器分离系统，其包括根据权利要求1至8中任一项所述的内置式磁性过滤组件。
  10. 根据权利要求9所述的离合器分离系统，其特征在于，所述离合器分离系统还包括：
    连接至所述壳体的一端的离合器主缸或模块化离合器执行器；以及
    连接至所述壳体的另一端的离合器副缸。
PCT/CN2020/078145 2020-03-06 2020-03-06 内置式磁性过滤组件和离合器分离系统 WO2021174521A1 (zh)

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