WO2022057934A1 - Egr valve - Google Patents

Egr valve Download PDF

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Publication number
WO2022057934A1
WO2022057934A1 PCT/CN2021/119440 CN2021119440W WO2022057934A1 WO 2022057934 A1 WO2022057934 A1 WO 2022057934A1 CN 2021119440 W CN2021119440 W CN 2021119440W WO 2022057934 A1 WO2022057934 A1 WO 2022057934A1
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WO
WIPO (PCT)
Prior art keywords
output
output gear
housing
egr valve
gear
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PCT/CN2021/119440
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French (fr)
Chinese (zh)
Inventor
邓树平
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浙江银轮机械股份有限公司
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Publication of WO2022057934A1 publication Critical patent/WO2022057934A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/52—Systems for actuating EGR valves
    • F02M26/53—Systems for actuating EGR valves using electric actuators, e.g. solenoids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/65—Constructional details of EGR valves

Definitions

  • the present application relates to the technical field of exhaust gas recirculation systems, and in particular, to an EGR valve.
  • EGR is the abbreviation of Exhaust Gas Re-circulation, which is the abbreviation of Exhaust Gas Recirculation.
  • Exhaust gas recirculation refers to returning part of the exhaust gas from the engine to the intake manifold and re-enters the cylinders with the fresh mixture. Because the exhaust gas contains a large amount of polyatomic gases such as CO2, and the gases such as CO2 cannot be combusted, they absorb a large amount of heat due to their high specific heat capacity, which reduces the maximum combustion temperature of the mixture in the cylinder, thereby reducing the amount of NOx generated.
  • the EGR system includes an EGR valve and an EGR cooler.
  • a part of the motor reduction gear train of a commonly used EGR valve adopts a non-planetary secondary gear reduction structure.
  • the output shaft of the EGR valve of this structure generally adopts a cantilever structure with the output end supporting the bearing.
  • the purpose of this application is to provide an EGR valve to solve the problem in the prior art that when the EGR valve is subjected to the exhaust gas pressure, the force is transmitted to the output shaft, and the cantilevered output shaft is easily swayed by the force, thereby causing The output gear yaw, which affects the meshing of the output gear and the transition gear.
  • An EGR valve provided by the present application includes a casing, a motor and an output gear assembly arranged in the casing; the output gear assembly includes an output gear, an output shaft and an output bearing, and the output gear is connected to the motor. Transmission connection, the output gear is sleeved on the output shaft, and the output end of the output shaft is penetrated in the output end bearing,
  • the output gear assembly further includes a support piece and an input end bearing; the support piece is fixed in the housing, the input end bearing is arranged on the support piece, and the input end of the output shaft passes through the in the input bearing.
  • the output gear includes a base body, a connecting portion and a tooth portion, the connecting portion is connected between the base body and the tooth portion, and the connecting portion is inclined relative to the base body, and the base body covers is provided on the output shaft; the support is provided with a cavity for accommodating at least part of the teeth.
  • the support member includes a mounting plate, a connecting plate and a supporting plate that are fixedly connected in sequence; the length direction of the mounting plate and the length direction of the connecting plate are arranged to intersect, and the length direction of the supporting plate is connected to the connecting plate.
  • the length directions of the plates are intersected and arranged, and the mounting plate, the connecting plate and the supporting plate enclose the cavity;
  • the mounting plate is fixedly connected with the housing, and the support plate is connected with the input end bearing.
  • the EGR valve further includes a transition gear, one end of the transition gear is drivingly connected to the motor, and the other end of the transition gear is meshed with the output gear;
  • the peripheral wall of the support member is in contact with the inner wall of the housing; the support member is provided with a through hole, and the transition gear and the output gear are engaged at the through hole.
  • the input bearing includes a bearing body and a bearing seat arranged in an L-shape, and the bearing body is mounted on the horizontal part of the bearing seat;
  • the horizontal portion of the bearing seat is inserted into the mounting plate, and the vertical portion of the bearing seat is sandwiched between the mounting plate and the output gear.
  • the axial direction of the transition gear is arranged in parallel with the axial direction of the output gear.
  • an installation groove is provided on the housing, and the installation plate of the support member is connected with the installation groove by interference.
  • the output gear is a full-tooth gear.
  • the output gear assembly further includes a sealing ring, the sealing ring is arranged on the output shaft, and the sealing ring is located on the side of the output gear close to the output end of the output shaft.
  • the EGR valve also includes a pin sensor assembly and a valve assembly
  • the casing includes a first casing and a second casing, the motor and the pin sensor assembly are located in the first casing, and the output gear assembly is located in the second casing; the first casing
  • the housing and the second housing are connected by fasteners.
  • the axial direction of the output shaft is perpendicular to the axial direction of the valve assembly, and an installation port is provided on the second housing above the valve assembly, and the installation port is opposite to the valve assembly.
  • the axial direction of the installation port is inclined, and the upper direction of the installation port is inclined in the direction close to the first housing; the installation port is provided with a dust cover.
  • the EGR valve provided by the present application includes a casing, a motor and an output gear assembly arranged in the casing;
  • the output gear assembly includes an output gear, an output shaft and an output bearing, the output gear is drivingly connected with the motor, and the output gear is sleeved on the output
  • the output gear assembly also includes a support piece and an input end bearing; the support piece is fixed in the casing, the input end bearing is arranged on the support piece, and the input end of the output shaft passes through the bearing. Set in the input bearing.
  • a support member is arranged in the housing, an input end bearing is arranged on the support member, an output end bearing is also arranged on the housing body, the input end of the output shaft is passed through the input end bearing, and the output end of the output shaft is The end is passed through the bearing at the output end, and both ends of the output shaft are supported, so that the output shaft is stable, which can avoid the output shaft from swinging, so as to stabilize the output gear and avoid affecting the meshing transmission between the output gear and other gears.
  • FIG. 1 is a first structural schematic diagram of an EGR valve provided by an embodiment of the present application
  • FIG. 2 is a second structural schematic diagram of the EGR valve shown in FIG. 1;
  • FIG. 3 is a third structural schematic diagram of the EGR valve shown in FIG. 1;
  • FIG. 4 is a schematic structural diagram of an output gear in the EGR valve shown in FIG. 1;
  • FIG. 5 is a schematic structural diagram of an output gear assembly and a transition gear in the EGR valve shown in FIG. 1;
  • FIG. 6 is a schematic structural diagram of a support member in the EGR valve shown in FIG. 1;
  • FIG. 7 is a schematic structural diagram of the second casing of the EGR valve shown in FIG. 1 .
  • Reference numerals 10-housing; 20-output gear assembly; 30-motor; 40-transition gear; 50-valve assembly; 60-pin sensor assembly; 70-dust cover; 11-first housing; 12 -Second housing; 13-installation groove; 21-output gear; 22-output shaft; 23-output bearing; 24-support; 25-input bearing; 26-seal; 51-eccentric; 52- Slide block; 53- valve stem; 54- valve; 211- base body; 212- connecting part; 213- tooth part; 241- mounting plate; 242- connecting plate; 243- supporting plate; 244- through hole.
  • the present application provides an EGR valve, which includes a housing 10 , a motor 30 and an output gear assembly 20 disposed in the housing 10 ;
  • the output gear assembly 20 includes an output gear 21 , an output shaft 22 and The output bearing 23, the output gear 21 is connected to the motor 30 in a driving manner, the output gear 21 is sleeved on the output shaft 22, the output end of the output shaft 22 is penetrated in the output bearing 23, and
  • the output gear assembly 20 also includes a support 24 and The input end bearing 25; the support member 24 is fixed in the housing 10, the input end bearing 25 is arranged on the support member 24, and the input end of the output shaft 22 passes through the input end bearing 25.
  • a support member 24 is provided in the housing 10 , an input end bearing 25 is provided on the support member 24 , and an output end shaft 23 is also provided on the housing 10 , and the input end of the output shaft 22 passes through In the input bearing 25 , the output end of the output shaft 22 passes through the output bearing 23 , and both ends of the output shaft 22 are supported, so that the output shaft 22 is stable, which can prevent the output shaft 22 from swinging, thereby making the output gear 21 Stable, avoid affecting the meshing transmission between the output gear 21 and other gears, avoid premature grinding or even broken teeth of the gears, and prolong the service life of the gears.
  • the output gear assembly 20 in the EGR valve provided in this embodiment is stable and reliable, so that the EGR valve is stable and reliable.
  • the EGR valve also includes a transition gear 40.
  • the transition gear 40 can be a stepped gear. One end of the transition gear 40 meshes with the gear on the power output shaft of the motor 30 for transmission, and the other end of the transition gear 40 meshes with the output gear 21 for transmission.
  • the axial direction of the transition gear 40 is arranged in parallel with the axial direction of the output gear 21 , that is, the transition gear and the output gear form parallel secondary gears and are non-planetary gear sets, which has a compact structure and takes up less space.
  • the EGR valve also includes a valve assembly 50.
  • the valve assembly 50 includes components such as an eccentric wheel 51, a slider 52, a valve stem 53 and a valve 54.
  • the output shaft 22 is drivingly connected to the eccentric wheel 51, and the eccentric wheel 51 is drivingly connected to the slider 52.
  • the valve The rod 53 is connected with the slider 52
  • the valve 54 is connected with the valve rod 53
  • the output shaft 22 outputs torque
  • the eccentric 51 and the slider 52 the rotary motion is converted into the opening and closing driving force of the valve 54 .
  • the structural form of the support member 24 can be various, for example: the support member 24 is suspended in the air, the support member 24 is arranged in a block structure or a frame structure, and the support member 24 is connected and fixed to the housing 10 through a support arm.
  • a part of the side wall of the support 24 is connected to the inner wall of the housing 10 , that is to say, in a uniform cross section, the area of the support 24 is smaller than the area of the housing 10 , and the bottom of the support 24 is connected to the bottom of the housing 10 .
  • the bottom is connected, or the upper part of the support 24 is connected with the upper part of the housing 10, or the side of the support 24 is connected with the side of the housing 10; in this embodiment, the support 24 can be arranged in a block structure, a frame structure Or a plate-like structure, etc.; the support member 24 is provided with a mounting hole for mounting the input end bearing 25 .
  • the peripheral wall of the support member 24 is in contact with the inner wall of the casing 10 at all points.
  • This structural support member 24 can be supported by the casing 10 everywhere, and the installation and fixation of the support member 24 is more convenient. stable, so that the input end bearing 25 is more stable, thereby making the output gear 21 more stable.
  • the support member 24 is provided with a through hole 244 , and the transition gear 40 is engaged with the output gear 21 at the through hole 244 .
  • the output gear 21 further includes a base body 211 , a connecting portion 212 and a tooth portion 213 , and the connecting portion 212 is connected between the base body 211 and the tooth portion 213 , and The connecting portion 212 is inclined relative to the base body 211 , and the base body 211 is sleeved on the output shaft 22 ; the support member 24 is provided with a cavity for accommodating at least part of the tooth portion 213 .
  • the teeth 213 of the output gear 21 and the base body 211 are staggered, which can be completely staggered or partially overlapped and partially staggered.
  • the support 24 is provided with a cavity, and the output At least part of the teeth 213 of the gear 21 can be accommodated in the cavity.
  • the teeth 213 are all located in the cavity, so that the structure of the output gear assembly 20 is compact, the structure of the ERG valve is compact, and it can be avoided that the support 24 and the bearing 25 at the input end are added to the gear assembly.
  • the volume becomes larger, but it can still maintain a small volume and take up less space.
  • the support member 24 further includes a mounting plate 241, a connecting plate 242 and a supporting plate 243 that are fixedly connected in sequence; the length direction of the mounting plate 241 is the same as the The length direction of the connecting plate 242 is arranged to intersect, and the length direction of the support plate 243 is arranged to intersect with the length direction of the connecting plate 242.
  • the mounting plate 241, the connecting plate 242 and the supporting plate 243 form a cavity; the mounting plate 241 is fixedly connected to the housing 10 , the support plate 243 is connected with the input bearing 25 .
  • the support member 24 is provided in a plate-like structure, including a mounting plate 241 , a connecting plate 242 and a supporting plate 243 , the connecting plate 242 is connected between the mounting plate 241 and the supporting plate 243 , and the mounting plate 241 and the supporting plate 243
  • the connecting plates 242 are arranged at an angle.
  • the length direction of the mounting plate 241 is consistent with the axial direction of the housing 10
  • the length direction of the supporting plate 243 is consistent with the axial direction of the output shaft 22.
  • the mounting plate 241, the connecting plate 242 and the supporting plate 243 It is generally arranged in a C-shape, and the three enclose a cavity to accommodate the tooth portion 213 of the output gear 21 .
  • the support member 24 of this structure is simple in structure, and has a small weight under the same volume.
  • the connecting plate 242 can be a straight plate, can also be an inclined plate inclined relative to the axial direction of the output shaft 22, or can be a combination of a straight plate and an inclined plate.
  • connection structure between the mounting plate 241 and the connection plate 242 and the connection structure between the support plate 243 and the mounting plate 241 can be various, such as welding, screw connection or interference connection.
  • the mounting plate 241 , the connecting plate 242 and the supporting plate 243 are integrally formed, and the supporting member 24 can be formed by stamping, which has high processing efficiency and good strength.
  • the support plate 243 is a cylindrical structure for installing the input bearing 25 .
  • the mounting plate 241 is an annular mounting sleeve.
  • the support member 24 can be connected to the housing 10 in various ways, such as welding, screw connection or snap connection.
  • the housing 10 is provided with an installation groove 13, and the installation plate 241 of the support member 24 is connected with the installation groove 13 by interference, which is convenient for processing and installation.
  • the input bearing 25 includes a bearing body and a bearing seat arranged in an L-shape, the bearing body is mounted on the horizontal part of the bearing seat; the horizontal part of the bearing seat is inserted in the mounting plate 241, The vertical portion of the bearing housing is sandwiched between the mounting plate 241 and the output gear 21 .
  • the horizontal portion of the bearing seat (defined as the direction that is consistent with the axial direction of the output shaft 22 is horizontal) is inserted into the mounting plate 241 , and the vertical portion of the bearing seat (defined as the direction perpendicular to the axial direction of the output shaft 22 is defined as horizontal).
  • the direction is vertical is located outside the mounting plate 241, one side of the bearing seat is in contact with the end of the mounting plate 241, the other side of the bearing seat is in contact with the output gear 21, and the input bearing 25 is axially and radially received. Constrained, stable installation.
  • the output gear 21 is a full-tooth gear.
  • the output gear 21 adopts a full-tooth gear, which increases the versatility of parts.
  • the arrangement of the fully toothed output gear 21 does not require modification of the angle of the flat.
  • the output gear assembly 20 further includes a sealing ring 26 .
  • the sealing ring 26 is arranged on the output shaft 22 , and the sealing ring 26 is located on the side of the output gear 21 close to the output end of the output shaft 22 .
  • a sealing ring 26 is added to the front end of the output shaft 22, which can significantly improve the dust-proof and condensation-proof effects of the transmission cavity.
  • the EGR valve further includes a pin sensor assembly and a valve assembly 50;
  • the housing 10 includes a first housing 11 and a second housing 12, and the motor 30 and the pin sensor assembly are located in the first housing 11 and the second housing 12.
  • the output gear assembly 20 is located in the second casing 12; the first casing 11 and the second casing 12 are connected by fasteners.
  • the housing 10 of the EGR valve is composed of a first housing 11 and a second housing 12, the motor 30 and the pin sensor assembly are integrated in the first housing 11, the output gear assembly 20 and the valve assembly are integrated 50 is integrated in the second casing 12, one end of the transition gear 40 is located in the first casing 11, and the other end of the transition gear 40 is located in the second casing 12.
  • the first housing 11 and the second housing 12 are connected and fixed to complete the assembly of the EGR valve.
  • annular mounting groove 13 may be provided at the opening of the second housing 12 , the peripheral wall of the support 24 abuts against the inner wall of the housing 10 , and the mounting plate 241 of the support 24 is installed in the mounting groove 13 with interference.
  • the axial direction of the output shaft 22 is perpendicular to the axial direction of the valve assembly 50, and the second housing 12 is provided with an installation port above the valve assembly 50, and the installation port is opposite to the valve assembly.
  • the axial direction of the 50 is inclined, and the upper direction of the installation opening is inclined in the direction close to the first housing 11 ; the installation opening is provided with a dust cover 70 .
  • the volume of the second housing 12 in this embodiment is reduced, so that the EGR valve occupies less space.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Electrically Driven Valve-Operating Means (AREA)

Abstract

The present invention relates to the technical field of exhaust gas recirculation systems, and in particular to an EGR (Exhaust Gas Re-circulation) valve, comprising a housing (10), and an electric motor (30) and an output gear assembly (20) that are arranged inside the housing (10). The output gear assembly (20) comprises an output gear (21), an output shaft (22) and an output end bearing (23), wherein the output gear (21) is in transmission connection with the electric motor (30); the output gear (21) is arranged on the output shaft (22) in a sleeving manner; and an output end of the output shaft (22) is arranged in the output end bearing (23) in a penetrating manner. The output gear assembly (20) further comprises a supporting member (24) and an input end bearing (25), wherein the supporting member (24) is fixed inside the housing (10), the input end bearing (25) is arranged on the supporting member (24), and an input end of the output shaft (22) is arranged in the input end bearing (25) in a penetrating manner. The output shaft (22) in the EGR valve is stable, such that deflection of the output shaft (22) can be avoided and the output gear (21) is thus stable; meshing transmission between the output gear (21) and other gears can be prevented from being affected; and the conditions of premature wear, or even tooth breakage, etc., of the gear can be avoided.

Description

EGR阀EGR valve
相关申请的交叉引用CROSS-REFERENCE TO RELATED APPLICATIONS
本申请要求于2020年9月18日提交中国专利局的申请号为202010991455X、名称为“EGR阀”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application claims the priority of the Chinese patent application with the application number 202010991455X and the title of "EGR valve" filed with the China Patent Office on September 18, 2020, the entire contents of which are incorporated in this application by reference.
技术领域technical field
本申请涉及废气再循环***技术领域，尤其是涉及一种EGR阀。The present application relates to the technical field of exhaust gas recirculation systems, and in particular, to an EGR valve.
背景技术Background technique
EGR是Exhaust Gas Re-circulation的缩写，即废气再循环的简称。废气再循环是指把发动机排出的部分废气回送到进气歧管，并与新鲜混合气一起再次进入气缸。由于废气中含有大量的CO2等多原子气体，而CO2等气体不能燃烧却由于其比热容高而吸收大量的热，使气缸中混合气的最高燃烧温度降低，从而减少了NOx的生成量。通常EGR***包括EGR阀和EGR冷却器等。EGR is the abbreviation of Exhaust Gas Re-circulation, which is the abbreviation of Exhaust Gas Recirculation. Exhaust gas recirculation refers to returning part of the exhaust gas from the engine to the intake manifold and re-enters the cylinders with the fresh mixture. Because the exhaust gas contains a large amount of polyatomic gases such as CO2, and the gases such as CO2 cannot be combusted, they absorb a large amount of heat due to their high specific heat capacity, which reduces the maximum combustion temperature of the mixture in the cylinder, thereby reducing the amount of NOx generated. Generally, the EGR system includes an EGR valve and an EGR cooler.
目前常用的一种EGR阀的电机减速齿轮系一部分是采用非行星二级齿轮减速结构，这种结构的EGR阀的输出轴一般采用输出端进行轴承支撑的悬臂结构。当EGR阀受到废气压力作用时，力传递到输出轴，悬臂设置的输出轴受力易导致偏摆，从而导致输出齿轮偏摆，这就会影响输出齿轮和过渡齿轮的啮合。At present, a part of the motor reduction gear train of a commonly used EGR valve adopts a non-planetary secondary gear reduction structure. The output shaft of the EGR valve of this structure generally adopts a cantilever structure with the output end supporting the bearing. When the EGR valve is affected by the exhaust gas pressure, the force is transmitted to the output shaft, and the output shaft set by the cantilever is easily swayed by the force, which causes the output gear to slew, which will affect the meshing of the output gear and the transition gear.
发明内容SUMMARY OF THE INVENTION
本申请的目的在于提供EGR阀，以在一定程度上解决现有技术中存在的当EGR阀受到废气压力作用时，力传递到输出轴，悬臂设置的输出轴受力易导致偏摆，从而导致输出齿轮偏摆，这就会影响输出齿轮和过渡齿轮的啮合。The purpose of this application is to provide an EGR valve to solve the problem in the prior art that when the EGR valve is subjected to the exhaust gas pressure, the force is transmitted to the output shaft, and the cantilevered output shaft is easily swayed by the force, thereby causing The output gear yaw, which affects the meshing of the output gear and the transition gear.
本申请提供的一种EGR阀，包括壳体以及设置在所述壳体内的电机和输出齿轮组件；所述输出齿轮组件包括输出齿轮、输出轴和输出端轴承，所述输出齿轮与所述电机传动连接，所述输出齿轮套设在所述输出轴上，所述输出轴的输出端穿设在所述输出端轴承内，An EGR valve provided by the present application includes a casing, a motor and an output gear assembly arranged in the casing; the output gear assembly includes an output gear, an output shaft and an output bearing, and the output gear is connected to the motor. Transmission connection, the output gear is sleeved on the output shaft, and the output end of the output shaft is penetrated in the output end bearing,
所述输出齿轮组件还包括支撑件和输入端轴承；所述支撑件固定在所述壳体内，所述输入端轴承设置在所述支撑件上，所述输出轴的输入端穿设在所述输入端轴承内。The output gear assembly further includes a support piece and an input end bearing; the support piece is fixed in the housing, the input end bearing is arranged on the support piece, and the input end of the output shaft passes through the in the input bearing.
进一步地，所述输出齿轮包括基体、连接部和齿部，所述连接部连接在所述基体和所述齿部之间，且所述连接部相对于所述基体倾斜设置，所述基体套设在所述输出轴上；所述支撑件上设有用于容纳至少部分所述齿部的空腔。Further, the output gear includes a base body, a connecting portion and a tooth portion, the connecting portion is connected between the base body and the tooth portion, and the connecting portion is inclined relative to the base body, and the base body covers is provided on the output shaft; the support is provided with a cavity for accommodating at least part of the teeth.
进一步地，所述支撑件包括依次固定连接的安装板、连接板和支撑板；所述安装板的长度方向与所述连接板的长度方向相交设置，所述支撑板的长度方向与所述连接板的长度方向相交设置，所述安装板、所述连接板和所述支撑板围成所述空腔；Further, the support member includes a mounting plate, a connecting plate and a supporting plate that are fixedly connected in sequence; the length direction of the mounting plate and the length direction of the connecting plate are arranged to intersect, and the length direction of the supporting plate is connected to the connecting plate. The length directions of the plates are intersected and arranged, and the mounting plate, the connecting plate and the supporting plate enclose the cavity;
所述安装板与所述壳体固定连接，所述支撑板与所述输入端轴承连接。The mounting plate is fixedly connected with the housing, and the support plate is connected with the input end bearing.
进一步地，所述EGR阀还包括过渡齿轮，所述过渡齿轮的一端与所述电机传动连接，所述过渡齿轮的另一端与所述输出齿轮啮合；Further, the EGR valve further includes a transition gear, one end of the transition gear is drivingly connected to the motor, and the other end of the transition gear is meshed with the output gear;
所述支撑件的周壁与所述壳体的内壁抵接；所述支撑件上设有通孔，所述过渡齿轮与所述输出齿轮在所述通孔处啮合。The peripheral wall of the support member is in contact with the inner wall of the housing; the support member is provided with a through hole, and the transition gear and the output gear are engaged at the through hole.
进一步地，所述输入端轴承包括轴承本体和呈L型设置的轴承座，所述轴承本体安装在所述轴承座的水平部；Further, the input bearing includes a bearing body and a bearing seat arranged in an L-shape, and the bearing body is mounted on the horizontal part of the bearing seat;
所述轴承座的水平部插设在所述安装板内，所述轴承座的竖直部夹设在所述安装板与所述输出齿轮之间。The horizontal portion of the bearing seat is inserted into the mounting plate, and the vertical portion of the bearing seat is sandwiched between the mounting plate and the output gear.
进一步地，所述过渡齿轮的轴向与所述输出齿轮的轴向平行设置。Further, the axial direction of the transition gear is arranged in parallel with the axial direction of the output gear.
进一步地，所述壳体上设有安装槽，所述支撑件的所述安装板与所述安装槽过盈连接。Further, an installation groove is provided on the housing, and the installation plate of the support member is connected with the installation groove by interference.
进一步地，所述输出齿轮为全齿形齿轮。Further, the output gear is a full-tooth gear.
进一步地，所述输出齿轮组件还包括密封圈，所述密封圈设置在所述输出轴上，所述密封圈位于所述输出齿轮的靠近所述输出轴的输出端的一侧。Further, the output gear assembly further includes a sealing ring, the sealing ring is arranged on the output shaft, and the sealing ring is located on the side of the output gear close to the output end of the output shaft.
进一步地，所述EGR阀还包括插针传感器组件和阀门组件；Further, the EGR valve also includes a pin sensor assembly and a valve assembly;
所述壳体包括第一壳体和第二壳体，所述电机和所述插针传感器组件位于所述第一壳体内，所述输出齿轮组件位于所述第二壳体内；所述第一壳体和所述第二壳体通过紧固件连接。The casing includes a first casing and a second casing, the motor and the pin sensor assembly are located in the first casing, and the output gear assembly is located in the second casing; the first casing The housing and the second housing are connected by fasteners.
进一步地，所述输出轴的轴向与所述阀门组件的轴向垂直设置，所述第二壳体上位于所述阀门组件的上方设有安装口，所述安装口相对于所述阀门组件的轴向倾斜设置，且所述安装口的上方向靠近所述第一壳体的方向倾斜；所述安装口设有防尘盖。Further, the axial direction of the output shaft is perpendicular to the axial direction of the valve assembly, and an installation port is provided on the second housing above the valve assembly, and the installation port is opposite to the valve assembly. The axial direction of the installation port is inclined, and the upper direction of the installation port is inclined in the direction close to the first housing; the installation port is provided with a dust cover.
本申请提供的的EGR阀，包括壳体以及设置在壳体内的电机和输出齿轮组件；输出齿轮组件包括输出齿轮、输出轴和输出端轴承，输出齿轮与电机传动连接，输出齿轮套设在输出轴上，输出轴的输出端穿设在输出端轴承内，输出齿轮组件还包括支撑件和输入端轴承；支撑件固定在壳体内，输入端轴承设置在支撑件上，输出轴的输入端穿设在输入端轴承内。The EGR valve provided by the present application includes a casing, a motor and an output gear assembly arranged in the casing; the output gear assembly includes an output gear, an output shaft and an output bearing, the output gear is drivingly connected with the motor, and the output gear is sleeved on the output On the shaft, the output end of the output shaft passes through the output end bearing, and the output gear assembly also includes a support piece and an input end bearing; the support piece is fixed in the casing, the input end bearing is arranged on the support piece, and the input end of the output shaft passes through the bearing. Set in the input bearing.
本申请提供的EGR阀中的壳体内设置有支撑件，支撑件上设有输入端轴承，壳体上还设置有输出端轴承，输出轴的输入端穿设在输入端轴承，输出轴的输出端穿设在输出端轴承，输出轴的两端均实现支撑，则输出轴稳定，能够避免输出轴出现偏摆，从而使输出齿轮稳定，避免影响输出齿轮与其他齿轮啮合传动。In the EGR valve provided by the present application, a support member is arranged in the housing, an input end bearing is arranged on the support member, an output end bearing is also arranged on the housing body, the input end of the output shaft is passed through the input end bearing, and the output end of the output shaft is The end is passed through the bearing at the output end, and both ends of the output shaft are supported, so that the output shaft is stable, which can avoid the output shaft from swinging, so as to stabilize the output gear and avoid affecting the meshing transmission between the output gear and other gears.
附图说明Description of drawings
为了更清楚地说明本申请具体实施方式或现有技术中的技术方案，下面将对具体实施方式或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本申请的一些实施方式，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the accompanying drawings required in the description of the specific embodiments or the prior art will be briefly introduced below. The drawings are some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.
图1为本申请实施例提供的EGR阀的第一结构示意图；FIG. 1 is a first structural schematic diagram of an EGR valve provided by an embodiment of the present application;
图2为图1所示的EGR阀的第二结构示意图；FIG. 2 is a second structural schematic diagram of the EGR valve shown in FIG. 1;
图3为图1所示的EGR阀的第三结构示意图；FIG. 3 is a third structural schematic diagram of the EGR valve shown in FIG. 1;
图4为图1所示的EGR阀中输出齿轮的结构示意图；FIG. 4 is a schematic structural diagram of an output gear in the EGR valve shown in FIG. 1;
图5为图1所示的EGR阀中输出齿轮组件与过渡齿轮的结构示意图；5 is a schematic structural diagram of an output gear assembly and a transition gear in the EGR valve shown in FIG. 1;
图6为图1所示的EGR阀中支撑件的结构示意图；6 is a schematic structural diagram of a support member in the EGR valve shown in FIG. 1;
图7为图1所示的EGR阀中第二壳体的结构示意图。FIG. 7 is a schematic structural diagram of the second casing of the EGR valve shown in FIG. 1 .
附图标记：10-壳体；20-输出齿轮组件；30-电机；40-过渡齿轮；50-阀门组件；60-插针传感器组件；70-防尘盖；11-第一壳体；12-第二壳体；13-安装槽；21-输出齿轮；22-输出轴；23-输出端轴承；24-支撑件；25-输入端轴承；26-密封圈；51-偏心轮；52-滑块；53-阀杆；54-阀门；211-基体；212-连接部；213-齿部；241-安装板；242-连接板；243-支撑板；244-通孔。Reference numerals: 10-housing; 20-output gear assembly; 30-motor; 40-transition gear; 50-valve assembly; 60-pin sensor assembly; 70-dust cover; 11-first housing; 12 -Second housing; 13-installation groove; 21-output gear; 22-output shaft; 23-output bearing; 24-support; 25-input bearing; 26-seal; 51-eccentric; 52- Slide block; 53- valve stem; 54- valve; 211- base body; 212- connecting part; 213- tooth part; 241- mounting plate; 242- connecting plate; 243- supporting plate; 244- through hole.
具体实施方式detailed description
下面将结合附图对本申请的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。The technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.
在本申请的描述中，需要说明的是，术语“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性。In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, only For the convenience of describing the present application and simplifying the description, it is not indicated or implied that the referred device or element must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as a limitation of the present application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.
如图1至图5所示，本申请提供一种EGR阀，包括壳体10以及设置在壳体10内的电机30和输出齿轮组件20；输出齿轮组件20包括输出齿轮21、输出轴22和输出端轴承23，输出齿轮21与电机30传动连接，输出齿轮21套设在输出轴22上，输出轴22的输出端穿设在输出端轴承23内，输出齿轮组件20还包括支撑件24和输入端轴承25；支撑件24固定在壳体10内，输入端轴承25设置在支撑件24上，输出轴22的输入端穿设在输入端轴承25内。As shown in FIGS. 1 to 5 , the present application provides an EGR valve, which includes a housing 10 , a motor 30 and an output gear assembly 20 disposed in the housing 10 ; the output gear assembly 20 includes an output gear 21 , an output shaft 22 and The output bearing 23, the output gear 21 is connected to the motor 30 in a driving manner, the output gear 21 is sleeved on the output shaft 22, the output end of the output shaft 22 is penetrated in the output bearing 23, and the output gear assembly 20 also includes a support 24 and The input end bearing 25; the support member 24 is fixed in the housing 10, the input end bearing 25 is arranged on the support member 24, and the input end of the output shaft 22 passes through the input end bearing 25.
本实施例提供的EGR阀中的壳体10内设置有支撑件24，支撑件24上设有输入端轴承25，壳体10上还设置有输出端轴23，输出轴22的输入端穿设在输入端轴承25，输出轴22的输出端穿设在输出端轴承23，输出轴22的两端均实现支撑，则输出轴22稳定，能够避免输出轴22出现偏摆，从而使输出齿轮21稳定，避免影响输出齿轮21与其他齿轮啮合传动，避免齿轮发生早磨甚至断齿等情况，延长了齿轮的使用寿命。本实施例提供的EGR阀中的输出齿轮组件20稳定可靠，从而使EGR阀稳定可靠。In the EGR valve provided in this embodiment, a support member 24 is provided in the housing 10 , an input end bearing 25 is provided on the support member 24 , and an output end shaft 23 is also provided on the housing 10 , and the input end of the output shaft 22 passes through In the input bearing 25 , the output end of the output shaft 22 passes through the output bearing 23 , and both ends of the output shaft 22 are supported, so that the output shaft 22 is stable, which can prevent the output shaft 22 from swinging, thereby making the output gear 21 Stable, avoid affecting the meshing transmission between the output gear 21 and other gears, avoid premature grinding or even broken teeth of the gears, and prolong the service life of the gears. The output gear assembly 20 in the EGR valve provided in this embodiment is stable and reliable, so that the EGR valve is stable and reliable.
EGR阀还包括过渡齿轮40，过渡齿轮40可以为阶梯式齿轮，过渡齿轮40的一端与电机 30的动力输出轴上的齿轮啮合传动，过渡齿轮40的另一端与输出齿轮21啮合传动。The EGR valve also includes a transition gear 40. The transition gear 40 can be a stepped gear. One end of the transition gear 40 meshes with the gear on the power output shaft of the motor 30 for transmission, and the other end of the transition gear 40 meshes with the output gear 21 for transmission.
可选的，过渡齿轮40的轴向与输出齿轮21的轴向平行设置，即过渡齿轮和输出齿轮形成平行二级齿轮，且为非行星齿轮组，这样的结构紧凑，占用空间少。Optionally, the axial direction of the transition gear 40 is arranged in parallel with the axial direction of the output gear 21 , that is, the transition gear and the output gear form parallel secondary gears and are non-planetary gear sets, which has a compact structure and takes up less space.
EGR阀还包括阀门组件50，阀门组件50包括偏心轮51、滑块52、阀杆53和阀门54等部件，输出轴22与偏心轮51传动连接，偏心轮51与滑块52传动连接，阀杆53与滑块52连接，阀门54与阀杆53连接，输出轴22输出扭矩，并通过偏心轮51、滑块52将旋转运动转化为阀门54的开启关闭驱动力。The EGR valve also includes a valve assembly 50. The valve assembly 50 includes components such as an eccentric wheel 51, a slider 52, a valve stem 53 and a valve 54. The output shaft 22 is drivingly connected to the eccentric wheel 51, and the eccentric wheel 51 is drivingly connected to the slider 52. The valve The rod 53 is connected with the slider 52 , the valve 54 is connected with the valve rod 53 , the output shaft 22 outputs torque, and through the eccentric 51 and the slider 52 , the rotary motion is converted into the opening and closing driving force of the valve 54 .
其中，支撑件24的结构形式可以为多种，例如:支撑件24悬空设置，支撑件24呈块状结构或者框架结构设置，支撑件24通过支臂与壳体10连接固定。Wherein, the structural form of the support member 24 can be various, for example: the support member 24 is suspended in the air, the support member 24 is arranged in a block structure or a frame structure, and the support member 24 is connected and fixed to the housing 10 through a support arm.
又如：支撑件24的部分侧壁与壳体10的内壁连接，也就是说在统一横截面上，支撑件24的面积小于壳体10的面积设置，支撑件24的底部与壳体10的底部连接，或者支撑件24的上部与壳体10的上部连接，或者支撑件24的侧部与壳体10的侧部连接；本实施例中，支撑件24可呈块状结构设置、框架结构或者板状结构设置等；支撑件24上设有用于安装输入端轴承25的安装孔。Another example: a part of the side wall of the support 24 is connected to the inner wall of the housing 10 , that is to say, in a uniform cross section, the area of the support 24 is smaller than the area of the housing 10 , and the bottom of the support 24 is connected to the bottom of the housing 10 . The bottom is connected, or the upper part of the support 24 is connected with the upper part of the housing 10, or the side of the support 24 is connected with the side of the housing 10; in this embodiment, the support 24 can be arranged in a block structure, a frame structure Or a plate-like structure, etc.; the support member 24 is provided with a mounting hole for mounting the input end bearing 25 .
作为一种可选方案，如图2所示，支撑件24的周壁处处与壳体10的内壁抵接，这种结构支撑件24能够处处得到壳体10的支撑，支撑件24的安装固定更加稳定，从而使输入端轴承25更加稳定，进而使输出齿轮21更加稳定。支撑件24上设有通孔244，过渡齿轮40与输出齿轮21在通孔244处啮合。As an optional solution, as shown in FIG. 2 , the peripheral wall of the support member 24 is in contact with the inner wall of the casing 10 at all points. This structural support member 24 can be supported by the casing 10 everywhere, and the installation and fixation of the support member 24 is more convenient. stable, so that the input end bearing 25 is more stable, thereby making the output gear 21 more stable. The support member 24 is provided with a through hole 244 , and the transition gear 40 is engaged with the output gear 21 at the through hole 244 .
如图2至图5所示，在上述实施例基础之上，进一步地，输出齿轮21包括基体211、连接部212和齿部213，连接部212连接在基体211和齿部213之间，且连接部212相对于基体211倾斜设置，基体211套设在输出轴22上；支撑件24上设有用于容纳至少部分齿部213的空腔。As shown in FIGS. 2 to 5 , on the basis of the above embodiment, the output gear 21 further includes a base body 211 , a connecting portion 212 and a tooth portion 213 , and the connecting portion 212 is connected between the base body 211 and the tooth portion 213 , and The connecting portion 212 is inclined relative to the base body 211 , and the base body 211 is sleeved on the output shaft 22 ; the support member 24 is provided with a cavity for accommodating at least part of the tooth portion 213 .
本实施例中，在输出轴22的轴向上，输出齿轮21的齿部213与基体211错开设置，可以完全错位设置，也可以部分重合部分错位设置，支撑件24上设有空腔，输出齿轮21的至少部分齿部213可容纳在空腔内，例如，当支撑件24部分侧壁与壳体10抵接时，一部分齿部213位于空腔内，当支撑件24的周壁处处与壳体10的内壁抵接时，齿部213全都位于空腔内，从而使得输出齿轮组件20结构紧凑，使ERG阀结构紧凑，可以避免齿轮组件在增加了支撑件24和输入端轴承25的情况下体积变大，仍能够保持小体积，少占用空间。In this embodiment, in the axial direction of the output shaft 22, the teeth 213 of the output gear 21 and the base body 211 are staggered, which can be completely staggered or partially overlapped and partially staggered. The support 24 is provided with a cavity, and the output At least part of the teeth 213 of the gear 21 can be accommodated in the cavity. For example, when part of the side wall of the support 24 is in contact with the housing 10, a part of the teeth 213 is located in the cavity, and when the peripheral wall of the support 24 is in contact with the housing 10 When the inner wall of the body 10 abuts, the teeth 213 are all located in the cavity, so that the structure of the output gear assembly 20 is compact, the structure of the ERG valve is compact, and it can be avoided that the support 24 and the bearing 25 at the input end are added to the gear assembly. The volume becomes larger, but it can still maintain a small volume and take up less space.
如图2、图3和图6所示，在上述实施例基础之上，进一步地，支撑件24包括依次固定连接的安装板241、连接板242和支撑板243；安装板241的长度方向与连接板242的长度方向相交设置，支撑板243的长度方向与连接板242的长度方向相交设置，安装板241、连接板242和支撑板243围成空腔；安装板241与壳体10固定连接，支撑板243与输入端轴承25连接。As shown in FIG. 2, FIG. 3 and FIG. 6, on the basis of the above embodiment, the support member 24 further includes a mounting plate 241, a connecting plate 242 and a supporting plate 243 that are fixedly connected in sequence; the length direction of the mounting plate 241 is the same as the The length direction of the connecting plate 242 is arranged to intersect, and the length direction of the support plate 243 is arranged to intersect with the length direction of the connecting plate 242. The mounting plate 241, the connecting plate 242 and the supporting plate 243 form a cavity; the mounting plate 241 is fixedly connected to the housing 10 , the support plate 243 is connected with the input bearing 25 .
本实施例中，支撑件24呈板状结构设置，包括安装板241、连接板242和支撑板243，连 接板242连接在安装板241和支撑板243之间，且安装板241与支撑板243均连接板242呈角度设置，如安装板241的长度方向与壳体10的轴向一致，支撑板243的长度方向与输出轴22的轴向一致，安装板241、连接板242和支撑板243大体呈C型设置，三者围成空腔，以容纳输出齿轮21的齿部213。这种结构的支撑件24结构简单，相同体积下重量小。In this embodiment, the support member 24 is provided in a plate-like structure, including a mounting plate 241 , a connecting plate 242 and a supporting plate 243 , the connecting plate 242 is connected between the mounting plate 241 and the supporting plate 243 , and the mounting plate 241 and the supporting plate 243 The connecting plates 242 are arranged at an angle. For example, the length direction of the mounting plate 241 is consistent with the axial direction of the housing 10, and the length direction of the supporting plate 243 is consistent with the axial direction of the output shaft 22. The mounting plate 241, the connecting plate 242 and the supporting plate 243 It is generally arranged in a C-shape, and the three enclose a cavity to accommodate the tooth portion 213 of the output gear 21 . The support member 24 of this structure is simple in structure, and has a small weight under the same volume.
连接板242可以是一个直板，也可以是相对输出轴22的轴向倾斜设置的斜板，也可以是直板和斜板的组合。The connecting plate 242 can be a straight plate, can also be an inclined plate inclined relative to the axial direction of the output shaft 22, or can be a combination of a straight plate and an inclined plate.
安装板241与连接板242之间的连接结构以及支撑板243与安装板241之间的连接结构均可以为多种，例如：焊接、螺纹连接或者过盈连接等等。可选的，安装板241、连接板242和支撑板243一体成型设置，可以通过冲压将支撑件24成型，加工效率高，强度好。The connection structure between the mounting plate 241 and the connection plate 242 and the connection structure between the support plate 243 and the mounting plate 241 can be various, such as welding, screw connection or interference connection. Optionally, the mounting plate 241 , the connecting plate 242 and the supporting plate 243 are integrally formed, and the supporting member 24 can be formed by stamping, which has high processing efficiency and good strength.
本实施例中，支撑板243为筒状结构，用于安装输入端轴承25，当支撑件24的周壁处处与壳体10的内壁抵接时，安装板241为环形安装套。In this embodiment, the support plate 243 is a cylindrical structure for installing the input bearing 25 . When the peripheral wall of the support member 24 is in contact with the inner wall of the housing 10 , the mounting plate 241 is an annular mounting sleeve.
支撑件24与壳体10的连接方式可以为多种，例如：焊接、螺纹连接或者卡接等。The support member 24 can be connected to the housing 10 in various ways, such as welding, screw connection or snap connection.
作为一种可选方案，壳体10上设有安装槽13，支撑件24的安装板241与安装槽13过盈连接，加工方便、安装方便。As an optional solution, the housing 10 is provided with an installation groove 13, and the installation plate 241 of the support member 24 is connected with the installation groove 13 by interference, which is convenient for processing and installation.
在上述实施例基础之上，进一步地，输入端轴承25包括轴承本体和呈L型设置的轴承座，轴承本体安装在轴承座的水平部；轴承座的水平部插设在安装板241内，轴承座的竖直部夹设在安装板241与输出齿轮21之间。On the basis of the above embodiment, further, the input bearing 25 includes a bearing body and a bearing seat arranged in an L-shape, the bearing body is mounted on the horizontal part of the bearing seat; the horizontal part of the bearing seat is inserted in the mounting plate 241, The vertical portion of the bearing housing is sandwiched between the mounting plate 241 and the output gear 21 .
本实施例中，轴承座的水平部(定义与输出轴22的轴向一致的方向为水平)插设在安装板241内，轴承座的竖直部(定义与输出轴22的轴向垂直的方向为竖直)位于安装板241外，轴承座的一侧与安装板241的端部抵接，轴承座的另一侧与输出齿轮21抵接，输入端轴承25在轴向和径向上受到约束，安装稳定。In this embodiment, the horizontal portion of the bearing seat (defined as the direction that is consistent with the axial direction of the output shaft 22 is horizontal) is inserted into the mounting plate 241 , and the vertical portion of the bearing seat (defined as the direction perpendicular to the axial direction of the output shaft 22 is defined as horizontal). The direction is vertical) is located outside the mounting plate 241, one side of the bearing seat is in contact with the end of the mounting plate 241, the other side of the bearing seat is in contact with the output gear 21, and the input bearing 25 is axially and radially received. Constrained, stable installation.
在上述实施例基础之上，进一步地，输出齿轮21为全齿形齿轮。本实施例中，输出齿轮21采用全齿形齿轮，增加了零件的通用性。当EGR阀布置需要转动方向时，全齿形的输出齿轮21的布置不需要改动扁位的角度。On the basis of the above embodiment, further, the output gear 21 is a full-tooth gear. In this embodiment, the output gear 21 adopts a full-tooth gear, which increases the versatility of parts. When the direction of rotation is required for the EGR valve arrangement, the arrangement of the fully toothed output gear 21 does not require modification of the angle of the flat.
在上述实施例基础之上，进一步地，输出齿轮组件20还包括密封圈26，密封圈26设置在输出轴22上，密封圈26位于输出齿轮21的靠近输出轴22的输出端的一侧。On the basis of the above embodiment, the output gear assembly 20 further includes a sealing ring 26 . The sealing ring 26 is arranged on the output shaft 22 , and the sealing ring 26 is located on the side of the output gear 21 close to the output end of the output shaft 22 .
本实施例中，输出轴22的前端增加了一个密封圈26，可以显著提高传动腔的防尘和防冷凝水的作用。In this embodiment, a sealing ring 26 is added to the front end of the output shaft 22, which can significantly improve the dust-proof and condensation-proof effects of the transmission cavity.
在上述实施例基础之上，进一步地，EGR阀还包括插针传感器组件和阀门组件50；壳体10包括第一壳体11和第二壳体12，电机30和插针传感器组件位于第一壳体11内，输出齿轮组件20位于第二壳体12内；第一壳体11和第二壳体12通过紧固件连接。On the basis of the above embodiment, further, the EGR valve further includes a pin sensor assembly and a valve assembly 50; the housing 10 includes a first housing 11 and a second housing 12, and the motor 30 and the pin sensor assembly are located in the first housing 11 and the second housing 12. Inside the casing 11, the output gear assembly 20 is located in the second casing 12; the first casing 11 and the second casing 12 are connected by fasteners.
本实施例中，EGR阀的壳体10由第一壳体11和第二壳体12组成，将电机30和插针传感 器组件集成在第一壳体11内，将输出齿轮组件20和阀门组件50集成在第二壳体12内，过渡齿轮40的一端位于第一壳体11内，过渡齿轮40的另一端位于第二壳体12内，则在组装EGR时，将各个部件装配完成后，最后第一壳体11和第二壳体12连接固定就可完成EGR阀的组装，与相关技术中的，电机壳体、传感器组件壳体、输出齿轮壳体和阀门壳体四个壳体组成EGR阀的壳体而言，大大简化了壳体10的结构，减少了零件之间的装配累积公差，提高了整体装配精度，也使得EGR阀的结构更加紧凑，降低生产成本。In this embodiment, the housing 10 of the EGR valve is composed of a first housing 11 and a second housing 12, the motor 30 and the pin sensor assembly are integrated in the first housing 11, the output gear assembly 20 and the valve assembly are integrated 50 is integrated in the second casing 12, one end of the transition gear 40 is located in the first casing 11, and the other end of the transition gear 40 is located in the second casing 12. When assembling the EGR, after assembling the various components, Finally, the first housing 11 and the second housing 12 are connected and fixed to complete the assembly of the EGR valve. In the related art, there are four housings: the motor housing, the sensor assembly housing, the output gear housing and the valve housing. As far as the housing of the EGR valve is concerned, the structure of the housing 10 is greatly simplified, the cumulative tolerance of assembly between parts is reduced, the overall assembly accuracy is improved, and the structure of the EGR valve is more compact and production costs are reduced.
具体地，可在第二壳体12的开口处设置环形安装槽13，支撑件24的周壁处处与壳体10的内壁抵接，支撑件24的安装板241过盈安装在安装槽13内。Specifically, an annular mounting groove 13 may be provided at the opening of the second housing 12 , the peripheral wall of the support 24 abuts against the inner wall of the housing 10 , and the mounting plate 241 of the support 24 is installed in the mounting groove 13 with interference.
在上述实施例基础之上，进一步地，输出轴22的轴向与阀门组件50的轴向垂直设置，第二壳体12上位于阀门组件50的上方设有安装口，安装口相对于阀门组件50的轴向倾斜设置，且安装口的上方向靠近第一壳体11的方向倾斜；安装口设有防尘盖70。本实施例中的第二壳体12体积减小，使EGR阀的占用空间更少。On the basis of the above embodiment, further, the axial direction of the output shaft 22 is perpendicular to the axial direction of the valve assembly 50, and the second housing 12 is provided with an installation port above the valve assembly 50, and the installation port is opposite to the valve assembly. The axial direction of the 50 is inclined, and the upper direction of the installation opening is inclined in the direction close to the first housing 11 ; the installation opening is provided with a dust cover 70 . The volume of the second housing 12 in this embodiment is reduced, so that the EGR valve occupies less space.
最后应说明的是：以上各实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述各实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的范围。Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present application. Scope.

Claims (11)

  1. 一种EGR阀，包括壳体以及设置在所述壳体内的电机和输出齿轮组件；所述输出齿轮组件包括输出齿轮、输出轴和输出端轴承，所述输出齿轮与所述电机传动连接，所述输出齿轮套设在所述输出轴上，所述输出轴的输出端穿设在所述输出端轴承内，其特征在于，An EGR valve includes a casing, a motor and an output gear assembly arranged in the casing; the output gear assembly includes an output gear, an output shaft and an output end bearing, the output gear is drivingly connected with the motor, and the The output gear is sleeved on the output shaft, and the output end of the output shaft is inserted into the output end bearing, characterized in that:
    所述输出齿轮组件还包括支撑件和输入端轴承；所述支撑件固定在所述壳体内，所述输入端轴承设置在所述支撑件上，所述输出轴的输入端穿设在所述输入端轴承内。The output gear assembly further includes a support piece and an input end bearing; the support piece is fixed in the housing, the input end bearing is arranged on the support piece, and the input end of the output shaft passes through the in the input bearing.
  2. 根据权利要求1所述的EGR阀，其特征在于，所述输出齿轮包括基体、连接部和齿部，所述连接部连接在所述基体和所述齿部之间，且所述连接部相对于所述基体倾斜设置，所述基体套设在所述输出轴上；所述支撑件上设有用于容纳至少部分所述齿部的空腔。The EGR valve according to claim 1, wherein the output gear comprises a base body, a connection part and a tooth part, the connection part is connected between the base body and the tooth part, and the connection parts are opposite to each other The base body is disposed obliquely, and the base body is sleeved on the output shaft; the support member is provided with a cavity for accommodating at least part of the tooth portion.
  3. 根据权利要求2所述的EGR阀，其特征在于，所述支撑件包括依次固定连接的安装板、连接板和支撑板；所述安装板的长度方向与所述连接板的长度方向相交设置，所述支撑板的长度方向与所述连接板的长度方向相交设置，所述安装板、所述连接板和所述支撑板围成所述空腔；The EGR valve according to claim 2, wherein the support member comprises an installation plate, a connection plate and a support plate that are fixedly connected in sequence; a length direction of the installation plate intersects with a length direction of the connection plate, The length direction of the support plate and the length direction of the connection plate are arranged to intersect, and the mounting plate, the connection plate and the support plate enclose the cavity;
    所述安装板与所述壳体固定连接，所述支撑板与所述输入端轴承连接。The mounting plate is fixedly connected with the housing, and the support plate is connected with the input end bearing.
  4. 根据权利要求3所述的EGR阀，其特征在于，所述EGR阀还包括过渡齿轮，所述过渡齿轮的一端与所述电机传动连接，所述过渡齿轮的另一端与所述输出齿轮啮合；The EGR valve according to claim 3, wherein the EGR valve further comprises a transition gear, one end of the transition gear is drivingly connected to the motor, and the other end of the transition gear meshes with the output gear;
    所述支撑件的周壁与所述壳体的内壁抵接；所述支撑件上设有通孔，所述过渡齿轮与所述输出齿轮在所述通孔处啮合。The peripheral wall of the support member is in contact with the inner wall of the housing; the support member is provided with a through hole, and the transition gear and the output gear are engaged at the through hole.
  5. 根据权利要求4所述的EGR阀，其特征在于，所述输入端轴承包括轴承本体和呈L型设置的轴承座，所述轴承本体安装在所述轴承座的水平部；The EGR valve according to claim 4, wherein the input bearing comprises a bearing body and an L-shaped bearing seat, and the bearing body is mounted on the horizontal part of the bearing seat;
    所述轴承座的水平部插设在所述安装板内，所述轴承座的竖直部夹设在所述安装板与所述输出齿轮之间。The horizontal portion of the bearing seat is inserted into the mounting plate, and the vertical portion of the bearing seat is sandwiched between the mounting plate and the output gear.
  6. 根据权利要求4所述的EGR阀，其特征在于，所述过渡齿轮的轴向与所述输出齿轮的轴向平行设置。The EGR valve according to claim 4, wherein the axial direction of the transition gear is arranged in parallel with the axial direction of the output gear.
  7. 根据权利要求2所述的EGR阀，其特征在于，所述壳体上设有安装槽，所述安装板与所述安装槽过盈连接。The EGR valve according to claim 2, wherein a mounting groove is provided on the housing, and the mounting plate is connected with the mounting groove by interference.
  8. 根据权利要求1所述的EGR阀，其特征在于，所述输出齿轮为全齿形齿轮。The EGR valve of claim 1, wherein the output gear is a full-toothed gear.
  9. 根据权利要求1所述的EGR阀，其特征在于，所述输出齿轮组件还包括密封圈，所述密封圈设置在所述输出轴上，所述密封圈位于所述输出齿轮的靠近所述输出轴的输出端的一侧。The EGR valve according to claim 1, wherein the output gear assembly further comprises a sealing ring, the sealing ring is arranged on the output shaft, and the sealing ring is located near the output gear of the output gear side of the output end of the shaft.
  10. 根据权利要求1-9中任一项所述的EGR阀，其特征在于，所述EGR阀还包括插针传感器组件和阀门组件；The EGR valve according to any one of claims 1-9, wherein the EGR valve further comprises a pin sensor assembly and a valve assembly;
    所述壳体包括第一壳体和第二壳体，所述电机和所述插针传感器组件位于所述第一壳体内，所述输出齿轮组件位于所述第二壳体内；所述第一壳体和所述第二壳体通过紧固件连接。The casing includes a first casing and a second casing, the motor and the pin sensor assembly are located in the first casing, and the output gear assembly is located in the second casing; the first casing The housing and the second housing are connected by fasteners.
  11. 根据权利要求9所述的EGR阀，其特征在于，所述输出轴的轴向与所述阀门组件的轴向垂直设置，所述第二壳体上位于所述阀门组件的上方设有安装口，所述安装口相对于所述阀门组件的轴向倾斜设置，且所述安装口的上方向靠近所述第一壳体的方向倾斜；所述安装口设有防尘盖。The EGR valve according to claim 9, wherein the axial direction of the output shaft is perpendicular to the axial direction of the valve assembly, and an installation port is provided on the second housing above the valve assembly , the installation port is inclined relative to the axial direction of the valve assembly, and the upper direction of the installation port is inclined toward the direction of the first housing; the installation port is provided with a dust cover.
PCT/CN2021/119440 2020-09-18 2021-09-18 Egr valve WO2022057934A1 (en)

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