WO2020191739A1 - 节气门体轴承和节气门 - Google Patents

节气门体轴承和节气门 Download PDF

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Publication number
WO2020191739A1
WO2020191739A1 PCT/CN2019/080189 CN2019080189W WO2020191739A1 WO 2020191739 A1 WO2020191739 A1 WO 2020191739A1 CN 2019080189 W CN2019080189 W CN 2019080189W WO 2020191739 A1 WO2020191739 A1 WO 2020191739A1
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WO
WIPO (PCT)
Prior art keywords
sealing ring
throttle body
ring
body bearing
wall
Prior art date
Application number
PCT/CN2019/080189
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English (en)
French (fr)
Inventor
王健
戚宝欢
Original Assignee
舍弗勒技术股份两合公司
王健
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Publication date
Application filed by 舍弗勒技术股份两合公司, 王健 filed Critical 舍弗勒技术股份两合公司
Priority to PCT/CN2019/080189 priority Critical patent/WO2020191739A1/zh
Publication of WO2020191739A1 publication Critical patent/WO2020191739A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members

Definitions

  • the present invention relates to the technical field of auto parts, and particularly to a throttle body bearing and a throttle valve.
  • the throttle body bearing is installed between the throttle body and the butterfly valve shaft to support the butterfly valve shaft.
  • the throttle body bearing needs to have a certain sealing performance to prevent the air in the butterfly valve passage from leaking, and to prevent the butterfly valve passage Air, water, etc. enter the gear box and electronic components.
  • the existing throttle body bearing has poor sealing performance, can only prevent air leakage to a certain extent, and has insufficient waterproof performance.
  • the purpose of the present invention is to overcome or at least alleviate the above-mentioned shortcomings of the prior art, and to provide a throttle body bearing and a throttle valve.
  • the throttle body bearing can prevent air and water from leaking from the valve channel and prevent water from entering the valve channel.
  • Gearboxes, electronic components, and throttle have better working performance and longer service life.
  • the present invention provides a throttle body bearing for sealingly mounting with a valve shaft.
  • the throttle body bearing includes an outer ring, a first sealing ring, and a second sealing ring.
  • the end of the second sealing ring on the axial side of the throttle body bearing is installed on the radial inner side of the outer ring;
  • the first sealing ring includes an annular first sealing ring inner wall and an annular first sealing ring outer wall formed around the axis of the throttle body bearing, and the first sealing ring outer wall is interference-fitted with the outer ring, So that the outer ring and the first sealing ring form an integral outer ring;
  • the second sealing ring includes an annular second sealing ring inner wall and an annular second sealing ring outer wall formed around the axis, and the second sealing ring inner wall is used to be assembled on the valve shaft;
  • the outer wall of the second sealing ring is in contact with the inner wall of the first sealing ring, and the second sealing ring can rotate relative to the outer ring as a whole around the axis.
  • the first sealing ring has an annular body and an annular first protrusion protruding from a radially inner portion of the body to the radially inner side, and the second sealing ring is connected to The first protrusion contacts.
  • the second sealing ring has a portion on the other side of the axial direction of the first protrusion, so that when the first sealing ring is compressed along the axial direction of the throttle body bearing When the first protrusion is moved along the axial direction, the second sealing ring stops the first protrusion.
  • the second sealing ring has a second sealing ring flat portion and a second sealing ring inclined portion connected along the axial direction, and the outer wall surface of the second sealing ring inclined portion is in the axial direction.
  • the first protrusion is in contact with the flat part of the second sealing ring, and the inclined part of the second sealing ring is located in the first protrusion while extending from one side to the other side in the axial direction. From the other side of the axis.
  • the first sealing ring has a first sealing ring oblique portion disposed opposite to the second sealing ring oblique portion, and the inner wall surface of the first sealing ring oblique portion moves from the axial direction One side is gradually inclined to the outside in the radial direction while extending to the other side of the axial direction, and there is a radial gap between the first sealing ring inclined part and the second sealing ring inclined part.
  • the first sealing ring and the second sealing ring are made of rubber material, the hardness of the first sealing ring is less than the hardness of the second sealing ring, and the first sealing ring The viscosity of is greater than the viscosity of the second sealing ring.
  • the present invention also provides a throttle valve, which includes a throttle body, a valve shaft, and the throttle body bearing according to any one of the above technical solutions, wherein the inner wall of the second sealing ring contacts the valve shaft so that the The second sealing ring is interference fit with the valve shaft, the second sealing ring and the valve shaft are assembled into a valve shaft as a whole, and the valve shaft as a whole can rotate around the axis relative to the outer ring as a whole.
  • valve shaft is a stepped shaft, and the second sealing ring abuts on the step of the valve shaft along the axial direction.
  • the throttle body bearing further includes a third sealing ring, and the third sealing ring is mounted on the diameter of the outer ring at the end of the other axial side of the throttle body bearing.
  • the third sealing ring has an annular third sealing ring outer wall and an annular third sealing ring inner wall, the third sealing ring outer wall is interference fit with the outer ring, and the third sealing ring inner wall has an annular first Three protrusions, the third protrusion contacts the valve shaft so that the third sealing ring and the valve shaft are interference fit.
  • the throttle valve further includes a butterfly valve, and the butterfly valve is mounted on the valve shaft on an axial side of the throttle body bearing.
  • the first sealing ring and the outer ring form a whole
  • the second sealing ring and the valve shaft form a whole
  • the seal ring will deform to form a larger contact area between the two. Therefore, it is difficult for air and water to pass between the first seal ring and the outer ring, between the second seal ring and the valve shaft, and the first seal. Enter the throttle body bearing between the ring and the second sealing ring.
  • the gearbox and electronic components on the other side of the axis protect the gearbox and electronic components and extend the life of the throttle valve; in addition, it is difficult for air to leak through the throttle body bearing, which also significantly improves the performance of the throttle valve. .
  • Fig. 1 is an axial cross-sectional view showing a specific embodiment of a throttle provided by the present disclosure.
  • FIG. 2 is an axial cross-sectional view showing a specific embodiment of the throttle body bearing of the throttle valve of FIG. 1, wherein the throttle body bearing and the valve shaft are installed together.
  • FIG. 3 is an axial cross-sectional view showing a partial structure of the first sealing ring of the throttle body bearing in FIG. 2.
  • the invention provides a throttle body bearing and a throttle valve.
  • the exemplary embodiments of the present invention are described below with reference to the drawings.
  • axial direction A and “radial R” are the axial direction A and radial direction R of the throttle body bearing 1, respectively, and “axial side” is the axial side of the throttle body bearing 1 (ie , The side of the butterfly valve 3 close to the throttle valve, as shown in the left side in Figure 2), “the other axial side” is the other axial side of the throttle body bearing 1 (that is, the side away from the butterfly valve 3, such as 2), the “radially inner side” is the radial inner side of the throttle body bearing 1, and the “radial outer side” is the radial outer side of the throttle body bearing 1.
  • the throttle body bearing 1 is sleeved on the outside of the valve shaft 2 (for example, a butterfly valve shaft) to support the valve shaft 2.
  • the throttle body bearing 1 is installed on both axial sides of the butterfly valve 3 supported by the valve shaft 2, and the gear box and electronic components 4 and the butterfly valve 3 are located on both sides of the throttle body bearing 1 in the axial direction.
  • the throttle body bearing 1 includes an outer ring 16, a first sealing ring 11, a second sealing ring 12 and a third sealing ring 13, as well as rolling elements 14 and a cage 15, a first sealing ring 11 and a
  • the second sealing ring 12 is located on one axial side of the rolling body 14, and the third sealing ring 13 is located on the other axial side of the rolling body 14.
  • the outer ring 16 surrounds the entire axis of the throttle body bearing 1 to form the bearing space of the throttle body bearing 1.
  • the end of the outer ring 16 on one side of the axial direction and the end of the other side of the axial direction are formed radially
  • the flange 161 is folded on the inner side.
  • the flange 161 is formed in a ring shape in a plane perpendicular to the axis.
  • the radial inner side of the flange 161 forms a passage for the valve shaft 2 to penetrate.
  • the radial dimension of the passage is larger than the valve shaft. 2 radial dimensions.
  • the valve shaft 2 passes through the radial inner side of the flange 161 and the middle of the bearing space so as to be coaxially arranged with the throttle body bearing 1.
  • An installation space is formed between the radially inner side of the outer ring 16 and the radially outer side of the valve shaft 2.
  • the first seal ring 11, the second seal ring 12, the third seal ring 13, the rolling elements 14, and the cage 15 are located in the installation space Inside.
  • the first seal ring 11 and the second seal ring 12 are located at the end of the installation space on one side of the axial direction
  • the third seal ring 13 is located at the end of the installation space on the other side of the axial direction
  • the rolling element 14 and the cage 15 are located at the end of the installation space. Between the two ends of the space.
  • the first sealing ring 11 includes an annular first sealing ring outer wall and an annular first sealing ring inner wall.
  • the outer wall of the first sealing ring and the outer ring 16 are interference-fitted, and the first sealing ring 11 and the outer ring 16 have a relatively large amount of interference so that the two form the entire outer ring.
  • the second sealing ring 12 includes an annular second sealing ring outer wall and an annular second sealing ring inner wall.
  • the outer wall of the second sealing ring is in contact with the inner wall of the first sealing ring. It should be understood that the two are in pressing contact with each other, so that both have elastic deformation to form a sealed contact.
  • the inner wall of the second sealing ring is interference-fitted with the valve shaft 2, and the second sealing ring 12 and the valve shaft 2 have a relatively large amount of interference so that the two form an integral valve shaft.
  • the third sealing ring 13 includes a third sealing ring outer wall and a third sealing ring inner wall, and the third sealing ring outer wall and the outer ring 16 are interference-fitted.
  • the inner wall of the third sealing ring has a third protrusion 131 which is interference-fitted with the valve shaft 2.
  • the third sealing ring 13 and the outer ring 16 have a relatively large interference, so that the third sealing ring 13 and the outer ring 16 form a whole.
  • the second sealing ring 12 rotates together with the valve shaft 2, and the outer ring including the first sealing ring 11, the outer ring 16 and the third sealing ring 13 remain (relatively) stationary as a whole.
  • the outer wall of the second sealing ring is in rotational contact with the inner wall of the first sealing ring, and the peripheral wall of the valve shaft 2 is in rotational contact with the inner wall of the third sealing ring.
  • the first protrusion 111 is in contact with the second sealing ring 12 with a small area. It should be understood that the two are in pressing contact with each other, so that both of them are elastically deformed to form a sealed contact. In this way, when a good seal is formed, the rotation resistance between the first sealing ring 11 and the second sealing ring 12 is also reduced.
  • the butterfly valve 3 is located on the axial side of the throttle body bearing 1, and the gear box and electronic components 4 are located on the other axial side of the throttle body bearing.
  • the sealing assembly formed by the first sealing ring 11 and the second sealing ring 12 is closer to the butterfly valve 3 than the third sealing ring 13, and the third sealing ring 13 is compared to the sealing formed by the first sealing ring 11 and the second sealing ring 12
  • the assembly is closer to the gearbox and the electronic components 4; that is, the first sealing ring 11 and the second sealing ring 12 are located at the end of the axial side of the throttle body bearing 1, and the third sealing ring 13 is located on the shaft of the throttle body bearing 1. To the end on the other side.
  • the first sealing ring 11 has an annular body and an annular first protrusion 111 protruding from the radially inner side of the body to the radially inner side.
  • the first protrusion 111 is formed on one axial side of the first sealing ring 11, and the first sealing ring 11 has a first sealing ring inclined portion 112 on the other axial side of the first protrusion 111.
  • the first sealing ring inclined portion 112 is inclined radially outward while extending from one axial side to the other axial side.
  • the first protrusion 111 may have a gradually reduced axial size in the process of protruding from the body, so that an axial side portion of the first protrusion 111 has an inclined convex first inclined surface, and the axis of the first protrusion 111 There is an inclined convex second inclined surface to the other side.
  • the convex first inclined surface extends to an end surface on one axial side of the first sealing ring 11, and the convex second inclined surface extends to the first sealing ring inclined portion 112 and is abutted with the first sealing ring inclined portion 112.
  • the included angle formed by the first sealing ring inclined portion 112 and the axial direction A may be smaller than the included angle formed by the convex second inclined surface and the axial direction A.
  • the end surface of the first seal ring 11 on one side of the axial direction has an annular groove 113 recessed toward the other side of the axial direction.
  • the first seal ring 11 has a groove outer portion 114 on the radially outer side of the groove 113 and a groove inner portion 115 on the radially inner side of the groove 113.
  • the outer portion 114 of the groove abuts against the folded edge 161 in the axial direction A, and the inner portion 115 of the groove is located on the other axial side of the folded edge 161 and is spaced apart from the folded edge 161 in the axial direction.
  • the second sealing ring 12 has a second sealing ring flat portion 121 and a second sealing ring inclined portion 122, and the second sealing ring flat portion 121 extends along the axial direction A and has a uniform radial dimension.
  • the second sealing ring inclined portion 122 is connected to the second sealing ring flat portion 121 on the other axial side of the second sealing ring flat portion 121, and the outer side wall of the second sealing ring inclined portion 122 extends from one side to the other in the axial direction A While extending on the other side, it gradually slopes outward in the radial direction.
  • the thickness in the radial direction R of the second seal ring inclined portion 122 gradually increases from one side in the axial direction to the other side in the axial direction.
  • the first protrusion 111 is interference fit with the second sealing ring flat portion 121 of the second sealing ring 12, and the first sealing ring oblique portion 112 is formed opposite to the second sealing ring oblique portion 122, so that the first sealing ring oblique portion A radial gap is formed between 112 and the inclined portion 122 of the second sealing ring.
  • the radial gap gradually slopes outward in the radial direction as it extends from one side to the other side in the axial direction A.
  • the radial gap can have a uniform size during extension.
  • the first protrusion 111 can move along the axial direction A under pressure. It is close to the second sealing ring inclined portion 122 so as to contact with the second sealing ring inclined portion 122.
  • the first protrusion 111 is in contact with the second sealing ring inclined portion 122, it is stopped by the second sealing ring inclined portion 122, so that the inner wall of the first sealing ring and the outer wall of the second sealing ring have a larger contact area, and the throttle body
  • the bearing 1 has a better sealing effect.
  • first sealing ring 11 and a part of the second sealing ring 12 are interference fit, and another part of the first sealing ring 11 and another part of the second sealing ring 12 have a radial gap.
  • the radial clearance is beneficial to reduce the resistance of the first sealing ring 11 and the second sealing ring 12 during the relative rotation.
  • the cage 15 forms several pockets to accommodate several rolling elements 14. There is an axial gap between the retainer 15 and the sealing assembly formed by the first sealing ring 11 and the second sealing ring 12 and an axial gap with the third sealing ring 13.
  • the rolling element 14 may be, for example, a needle roller.
  • Both the first sealing ring 11 and the second sealing ring 12 can be made of rubber material.
  • the hardness of the first sealing ring 11 is less than that of the second sealing ring 12, and the viscosity of the first sealing ring 11 is greater than that of the second sealing ring 12. .
  • first seal ring 11 and the second seal ring 12 can make good contact while rotating.
  • first sealing ring 11 may be made of fluorine rubber
  • second sealing ring 12 may be made of polyurethane rubber.
  • the valve shaft 2 may be a stepped shaft, so that the valve shaft 2 has a valve shaft shoulder, and the valve shaft shoulder forms an annular step 20.
  • the second seal ring 12 does not exceed the valve shaft shoulder in the radial direction R, that is, the outer circumferential surface of the second seal ring inclined portion 122 does not exceed the outer circumferential surface of the step 20 in the radial direction R.
  • the valve shaft 2 has a first shaft section 21 and a second shaft section 22.
  • the first shaft section 21 is located on one axial side of the step 20, and the second shaft section 22 is located on the other axial side of the step 20.
  • the first shaft section 21 The radial dimension of is smaller than the radial dimension of the second shaft section 22, so that the axial section of the installation space of the throttle body bearing 1 between the valve shaft 2 and the outer ring 16 is formed into a substantially L-shape.
  • the two branches of the L shape respectively form a part of the installation space for accommodating the first sealing ring 11 and the second sealing ring 12 and a part of the installation space for accommodating the rolling element 14, the cage 15 and the third sealing ring 13.
  • the throttle body bearing 1 may be a rolling bearing.
  • the rolling bodies 14 may also be balls or rollers.
  • the throttle body bearing 1 can be a sliding bearing.
  • the throttle body bearing 1 instead of the rolling elements 14 and the cage 15, the throttle body bearing 1 can also include a bushing.
  • the sealing assembly formed by the first sealing ring 11 and the second sealing ring 12 and the third sealing ring 13 are sleeved between the radial inner side of the outer ring 16 and the radial outer side of the valve shaft 2.
  • the part of the second sealing ring 12 used to stop the first protrusion 111 in the axial direction A may be a structure other than the inclined portion 122 of the second sealing ring, for example, the second sealing ring 12 is in contact with
  • the other side in the axial direction of the portion contacted by the first protrusion 111 has a convex portion that protrudes radially outward.
  • the convex portion has an annular stop surface in the axial direction, so that when the throttle body bearing 1 is pressed on one side in the axial direction, the first protrusion 111 moves closer to the stop surface and further contacts the stop surface. .
  • the radial gap between the first sealing ring 11 and the second sealing ring 12 can also be formed in other ways, and can be formed in other styles, for example, the second sealing ring 12 is in contact with the first protrusion 111
  • the other side in the axial direction of the contacting part has a convex portion protruding radially outward, and the outer peripheral surface of the convex portion extends in the axial direction A, so that the first seal ring 11 and the second seal ring 12 are formed along the axial direction.
  • a extended radial clearance is

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Lift Valve (AREA)

Abstract

一种节气门体轴承（1），包括外圈（16）、第一密封圈（11）和第二密封圈（12），第一密封圈（11）外壁与外圈（16）过盈装配，外圈（16）与第一密封圈（11）形成外圈整体；第二密封圈（12）内壁用于装配于阀轴（2）；第二密封圈（12）外壁与第一密封圈（11）内壁接触，并且第二密封圈（12）能够相对于外圈（16）整体绕轴线转动。当节气门体轴承（1）的轴向一侧受压时，空气和水难以进入节气门体轴承（1）。节气门的阀通道内的空气和水难以泄露到齿轮箱和电子元件内，保护了齿轮箱和电子元件，空气难以经节气门体轴承泄露，这显著改善了节气门的使用性能。还提供了一种节气门。

Description

节气门体轴承和节气门 技术领域
本发明涉及汽车零部件技术领域，且特别地涉及一种节气门体轴承和节气门。
背景技术
在节气门中，节气门体轴承安装在节气门体和蝶阀轴之间从而支撑蝶阀轴，节气门体轴承需要具备一定的密封性能以防止蝶阀通道内的空气外泄，以及防止蝶阀通道内的空气、水等进入齿轮箱和电子元件。
现有的节气门体轴承的密封性能不佳，仅能在一定程度上防止空气泄露而且防水性能不足。
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，提供一种节气门体轴承和节气门，节气门体轴承能够防止空气和水从阀通道内泄露并防止水进入阀通道以外的齿轮箱和电子元件，节气门具有较好的工作性能和较长的使用寿命。
本发明提供一种节气门体轴承，其用于与阀轴密封地安装到一起，所述节气门体轴承包括外圈、第一密封圈和第二密封圈，所述第一密封圈和所述第二密封圈在所述节气门体轴承的轴向一侧的端部安装在所述外圈的径向内侧；
所述第一密封圈包括绕所述节气门体轴承的轴线形成的环形的第一密封圈内壁和环形的第一密封圈外壁，所述第一密封圈外壁与所述外圈过盈装配，从而让所述外圈与所述第一密封圈形成外圈整体；
所述第二密封圈包括绕所述轴线形成的环形的第二密封圈内壁和环形的第二密封圈外壁，所述第二密封圈内壁用于装配于所述阀轴上；
所述第二密封圈外壁与所述第一密封圈内壁接触，并且所述第二密封圈能够相对于所述外圈整体绕所述轴线转动。
在至少一个实施方式中，所述第一密封圈具有环形的本体和从所述本体的径向内侧部向所述径向内侧凸出的环形的第一凸起，所述第二密封圈与所述第一凸起接触。
在至少一个实施方式中，所述第二密封圈具有在所述第一凸起的轴向另一侧的部分，从而当所述第一密封圈沿所述节气门体轴承的轴向受压而使所述第一凸起沿所述轴向移动时，所述第二密封圈止挡所述第一凸起。
在至少一个实施方式中，所述第二密封圈具有沿所述轴向连接的第二密封圈平部和第二密封圈斜部，所述第二密封圈斜部的外壁面在从轴向一侧向轴向另一侧延伸的过程中逐渐向径向外侧倾斜，所述第一凸起与所述第二密封圈平部接触，所述第二密封圈斜部位于所述第一凸起的轴向另一侧。
在至少一个实施方式中，所述第一密封圈具有与所述第二密封圈斜部相对设置的第一密封圈斜部，所述第一密封圈斜部的内壁面在从所述轴向一侧向所述轴向另一侧延伸的过程中逐渐向径向外侧倾斜，所述第一密封圈斜部与所述第二密封圈斜部之间具有径向间隙。
在至少一个实施方式中，所述第一密封圈和所述第二密封圈采用橡胶材料制成，所述第一密封圈的硬度小于所述第二密封圈的硬度，所述第一密封圈的粘度大于所述第二密封圈的粘度。
本发明还提供一种节气门，其包括节气门体、阀轴和根据上述技术方案中任一项所述的节气门体轴承，所述第二密封圈内壁与所述阀轴接触从而所述第二密封圈与所述阀轴过盈装配，所述第二密封圈与所述阀轴装配成阀轴 整体，所述阀轴整体能够相对于所述外圈整体绕所述轴线转动。
在至少一个实施方式中，所述阀轴为阶梯轴，所述第二密封圈与所述阀轴的台阶沿所述轴向抵接。
在至少一个实施方式中，所述节气门体轴承还包括第三密封圈，所述第三密封圈在所述节气门体轴承的轴向另一侧的端部安装在所述外圈的径向内侧；
所述第三密封圈具有环形的第三密封圈外壁和环形的第三密封圈内壁，所述第三密封圈外壁与所述外圈过盈装配，所述第三密封圈内壁具有环形的第三凸起，所述第三凸起与所述阀轴接触从而所述第三密封圈与所述阀轴过盈装配。
在至少一个实施方式中，所述节气门还包括蝶阀，所述蝶阀在所述节气门体轴承的轴向一侧安装于所述阀轴。
本发明提供的上述节气门体轴承能够获得以下有益效果：
当节气门体轴承的轴向一侧受压(气压或者水压)时，由于第一密封圈和外圈形成整体，以及第二密封圈和阀轴形成整体，以及第一密封圈和第二密封圈将会变形而在二者之间形成较大的接触面积，因此，空气和水难以从第一密封圈和外圈之间，以及第二密封圈和阀轴之间，以及第一密封圈和第二密封圈之间进入节气门体轴承。
本发明提供的上述节气门能够获得以下有益效果：
由于第一密封圈和第二密封圈在节气门体轴承的轴向一侧的端部形成了良好的密封，因此阀通道内的空气和水难以经节气门体轴承泄露到节气门体轴承的轴向另一侧的齿轮箱和电子元件内，保护了齿轮箱和电子元件，延长了节气门的使用寿命；此外，空气难以经节气门体轴承泄露，这还显著改善了节气门的使用性能。
附图说明
图1为示出了本公开提供的节气门的一个具体实施方式的轴向剖视图。
图2为示出了图1的节气门的节气门体轴承的一个具体实施方式的轴向剖视图，其中，节气门体轴承与阀轴安装在一起。
图3为示出了图2中的节气门体轴承的第一密封圈的局部结构的轴向剖视图。
附图标记说明：
1节气门体轴承；11第一密封圈；111第一凸起；112第一密封圈斜部；113沟槽；114沟槽外侧部分；115沟槽内侧部分；12第二密封圈；121第二密封圈平部；122第二密封圈斜部；13第三密封圈；131第三凸起；14滚动体；15保持架；16外圈；161翻折边；2阀轴；20台阶；21第一轴段；22第二轴段；3蝶阀；4齿轮箱和电子元件；
A轴向；R径向。
具体实施方式
本发明提供一种节气门体轴承和节气门。下面参照附图描述本发明的示例性实施方式。
在本文中，“轴向A”和“径向R”分别是节气门体轴承1的轴向A和径向R，“轴向一侧”是节气门体轴承1的轴向一侧(即，靠近节气门的蝶阀3的一侧，如图2中的左侧)，“轴向另一侧”是节气门体轴承1的轴向另一侧(即，远离蝶阀3的一侧，如图2中的右侧)，“径向内侧”是节气门体轴承1的径向内侧，“径向外侧”是节气门体轴承1的径向外侧。
如图1所示，节气门体轴承1套装在阀轴2(例如蝶阀轴)的外部从而起到支撑阀轴2的作用。在阀轴2所支撑的蝶阀3的轴向两侧均安装该节气门体 轴承1，齿轮箱和电子元件4与蝶阀3位于节气门体轴承1的轴向上的两侧。
如图2所示，节气门体轴承1包括外圈16、第一密封圈11、第二密封圈12和第三密封圈13，以及滚动体14和保持架15，第一密封圈11和第二密封圈12位于滚动体14的轴向一侧，第三密封圈13位于滚动体14的轴向另一侧。
外圈16绕节气门体轴承1的轴线整周地环绕从而形成节气门体轴承1的轴承空间，外圈16在轴向一侧的端部和轴向另一侧的端部形成向径向内侧翻折的翻折边161，翻折边161在垂直于轴线的平面内形成为环形，翻折边161的径向内侧形成供阀轴2贯穿的通路，该通路的径向尺寸大于阀轴2的径向尺寸。
阀轴2穿过翻折边161的径向内侧和轴承空间的中部从而与节气门体轴承1同轴布置。在外圈16的径向内侧和阀轴2的径向外侧之间形成安装空间，第一密封圈11、第二密封圈12、第三密封圈13和滚动体14、保持架15位于该安装空间内。
第一密封圈11和第二密封圈12位于安装空间的轴向一侧的端部，第三密封圈13位于安装空间的轴向另一侧的端部，滚动体14和保持架15位于安装空间的两个端部之间。
第一密封圈11包括环形的第一密封圈外壁和环形的第一密封圈内壁。第一密封圈外壁与外圈16过盈装配，第一密封圈11和外圈16之间具有较大的过盈量从而二者形成外圈整体。
第二密封圈12包括环形的第二密封圈外壁和环形的第二密封圈内壁。第二密封圈外壁与第一密封圈内壁接触，应当理解，二者是彼此挤压地接触，从而二者均具有弹性变形而形成密封的接触。第二密封圈内壁与阀轴2过盈装配，第二密封圈12和阀轴2之间具有较大的过盈量从而二者形成阀轴整体。
第三密封圈13包括第三密封圈外壁和第三密封圈内壁，第三密封圈外壁 与外圈16过盈装配。第三密封圈内壁具有第三凸起131，第三凸起131与阀轴2过盈装配。第三密封圈13与外圈16具有较大的过盈量，从而第三密封圈13与外圈16形成整体。
当阀轴2转动时，第二密封圈12与阀轴2一同转动，包括第一密封圈11、外圈16和第三密封圈13的外圈整体保持(相对)不动。第二密封圈外壁与第一密封圈内壁转动地接触，阀轴2的周壁与第三密封圈内壁转动地接触。
第一凸起111以较小的面积与第二密封圈12接触，应当理解，二者是彼此挤压地接触，从而二者均存在弹性变形而形成密封的接触。这样，在形成良好的密封的情况下，还减小了第一密封圈11和第二密封圈12之间的转动阻力。
这样，当节气门体轴承1的轴向一侧受压(气压或者水压，如图2和图3中箭头所示)时，由于第一密封圈11和外圈16形成外圈整体，以及第二密封圈12和阀轴2形成阀轴整体，以及第一密封圈11会变形而在二者之间形成较大的接触面积，因此，空气和水难以从第一密封圈11和第二密封圈12之间进入节气门体轴承1。另外，由于第一密封圈11和外圈16之间的过盈装配以及第二密封圈12和阀轴2之间的过盈装配，空气和水也难以从第一密封圈11和外圈16之间以及第二密封圈12和阀轴2之间进入节气门体轴承1。
如图1所示，当将节气门体轴承1安装于节气门时，蝶阀3位于节气门体轴承1的轴向一侧，齿轮箱和电子元件4位于节气门体轴承的轴向另一侧。第一密封圈11和第二密封圈12形成的密封组件相较于第三密封圈13更靠近蝶阀3，第三密封圈13相较于第一密封圈11和第二密封圈12形成的密封组件更靠近齿轮箱和电子元件4；即第一密封圈11和第二密封圈12位于节气门体轴承1的轴向一侧的端部，第三密封圈13位于节气门体轴承1的轴向另一侧的端部。
这样，由于第一密封圈11和第二密封圈12在节气门体轴承1的轴向一侧的端部形成了良好的密封，因此蝶阀通道内的空气和水难以经节气门体轴承1泄露到节气门体轴承1的轴向另一侧的齿轮箱和电子元件4内，保护了齿轮箱和电子元件4，延长了节气门的使用寿命；此外，空气难以经节气门体轴承1泄露，这还显著改善了节气门的使用性能。
如图3所示，第一密封圈11具有环形的本体和从本体的径向内侧部向径向内侧凸出的环形的第一凸起111。第一凸起111形成于第一密封圈11的轴向一侧部，第一密封圈11在第一凸起111的轴向另一侧具有第一密封圈斜部112。第一密封圈斜部112在从轴向一侧向轴向另一侧延伸的过程中向径向外侧倾斜。
第一凸起111在从本体凸出的过程中可以具有逐渐缩小的轴向尺寸，从而第一凸起111的轴向一侧部具有倾斜的凸起第一斜面，第一凸起111的轴向另一侧部具有倾斜的凸起第二斜面。凸起第一斜面延伸至第一密封圈11的轴向一侧的端面，凸起第二斜面延伸至第一密封圈斜部112并与第一密封圈斜部112对接。第一密封圈斜部112与轴向A形成的夹角可以小于凸起第二斜面与轴向A形成的夹角。
第一密封圈11在轴向一侧的端面具有向轴向另一侧凹陷的环形的沟槽113，当节气门体轴承1在轴向一侧受压时，压力能够作用于沟槽113。
第一密封圈11具有在沟槽113的径向外侧的沟槽外侧部分114，以及在沟槽113的径向内侧的沟槽内侧部分115。沟槽外侧部分114与翻折边161沿轴向A抵接，沟槽内侧部分115位于翻折边161的轴向另一侧，并与翻折边161沿轴向间隔开。
这样，空气和水能够沿轴向A经过翻折边161与阀轴2之间的径向间隙进入沟槽113。
第二密封圈12具有第二密封圈平部121和第二密封圈斜部122，第二密封圈平部121沿轴向A延伸并具有一致的径向尺寸。第二密封圈斜部122在第二密封圈平部121的轴向另一侧与第二密封圈平部121连接，第二密封圈斜部122的外侧壁在沿轴向A从一侧向另一侧延伸的过程中逐渐向径向外侧倾斜。换言之，第二密封圈斜部122的径向R上的厚度从轴向一侧向轴向另一侧逐渐增大。
第一凸起111与第二密封圈12的第二密封圈平部121过盈装配，第一密封圈斜部112与第二密封圈斜部122相对地形成，从而在第一密封圈斜部112和第二密封圈斜部122之间形成径向间隙。径向间隙在沿轴向A从一侧向另一侧延伸的过程中逐渐向径向外侧倾斜。
该径向间隙在延伸的过程中可以具有一致的尺寸。
当节气门体轴承1在轴向一侧受压时，由于第一凸起111位于第二密封圈斜部122的轴向一侧，因而第一凸起111在压力作用下能够沿轴向A靠近第二密封圈斜部122从而与第二密封圈斜部122接触。当第一凸起111与第二密封圈斜部122接触时受到第二密封圈斜部122的止挡，从而第一密封圈内壁与第二密封圈外壁具有更大的接触面积，节气门体轴承1具有更好的密封效果。
可见，第一密封圈11的一部分与所述第二密封圈12的一部分过盈装配，而第一密封圈11的另一部分与所述第二密封圈12的另一部分具有径向间隙。该径向间隙有利于减小第一密封圈11和第二密封圈12在相对转动的过程中的阻力。
保持架15形成若干个兜孔以容纳若干个滚动体14。保持架15与第一密封圈11和第二密封圈12形成的密封组件之间具有轴向间隙，并且与第三密封圈13之间具有轴向间隙。
滚动体14可以为例如滚针。
第一密封圈11和第二密封圈12均可以采用橡胶材料制成，第一密封圈11的硬度小于第二密封圈12的硬度，第一密封圈11的粘度大于第二密封圈12的粘度。
这样，第一密封圈11和第二密封圈12能够良好地实施一边转动一边接触。
具体地，第一密封圈11可以采用氟橡胶制成，第二密封圈12可以采用聚氨酯橡胶制成。
阀轴2可以为阶梯轴，从而阀轴2具有阀轴肩部，阀轴肩部形成环形的台阶20。第二密封圈12，比如第二密封圈斜部122的轴向另一侧的端面与阀轴肩部沿轴向A抵接，从而阀轴肩部能够在轴向A上定位第二密封圈12。
第二密封圈12在径向R上不超出阀轴肩部，即第二密封圈斜部122的外周面在径向R上不超出台阶20的外周面。
阀轴2具有第一轴段21和第二轴段22，第一轴段21位于台阶20的轴向一侧，第二轴段22位于台阶20的轴向另一侧，第一轴段21的径向尺寸小于第二轴段22的径向尺寸，从而在阀轴2与外圈16之间的节气门体轴承1的安装空间的轴向截面形成为大致L形。L形的两个分支分别形成容纳第一密封圈11和第二密封圈12的安装空间的一部分，以及容纳滚动体14、保持架15和第三密封圈13的安装空间的一部分。
当将上述节气门体轴承1应用于节气门时，可以执行以下步骤：
将外圈16与滚动体14和保持架15组装，以及将外圈16与第一密封圈11、第三密封圈13分别压装，从而形成第一模块；
将阀轴2与第二密封圈12压装，从而形成第二模块；
将第二模块与第一模块组装。
上述各步骤在不违背本发明的原理的情况下可以互换顺序。
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。
(i)节气门体轴承1可以为滚动轴承，在节气门体轴承1为滚动轴承的其他实施方式中，滚动体14还可以为球或滚柱。
(ii)节气门体轴承1可以为滑动轴承，在节气门体轴承1为滑动轴承的实施方式中，代替滚动体14和保持架15，节气门体轴承1还可以包括衬套，衬套在第一密封圈11和第二密封圈12形成的密封组件和第三密封圈13之间套装于外圈16的径向内侧和阀轴2的径向外侧。
(iii)应当理解，第二密封圈12的用于在轴向A上止挡第一凸起111的部分可以为第二密封圈斜部122以外的其他结构，比如第二密封圈12在与第一凸起111接触的部分的轴向另一侧具有向径向外侧凸出的凸部。该凸部在轴向上具有环形的止挡面，这样，当节气门体轴承1在轴向一侧受压时，第一凸起111靠近该止挡面移动而进一步与该止挡面接触。
(iv)应当理解，第一密封圈11和第二密封圈12之间的径向间隙还可以通过其他方式形成，并且可以形成为其他样式，比如第二密封圈12在与第一凸起111接触的部分的轴向另一侧具有向径向外侧凸出的凸部，该凸部的外周面沿轴向A延伸，从而第一密封圈11和第二密封圈12之间形成沿轴向A延伸的径向间隙。

Claims (10)

  1. 一种节气门体轴承，其用于与阀轴(2)密封地安装到一起，所述节气门体轴承包括外圈(16)、第一密封圈(11)和第二密封圈(12)，所述第一密封圈(11)和所述第二密封圈(12)在所述节气门体轴承的轴向一侧的端部安装在所述外圈(16)的径向内侧；
    所述第一密封圈(11)包括绕所述节气门体轴承的轴线形成的环形的第一密封圈内壁和环形的第一密封圈外壁，所述第一密封圈外壁与所述外圈(16)过盈装配，从而让所述外圈(16)与所述第一密封圈(11)形成外圈整体；
    所述第二密封圈(12)包括绕所述轴线形成的环形的第二密封圈内壁和环形的第二密封圈外壁，所述第二密封圈内壁用于装配于所述阀轴(2)上
    所述第二密封圈外壁与所述第一密封圈内壁接触，并且所述第二密封圈(12)能够相对于所述外圈整体绕所述轴线转动。
  2. 根据权利要求1所述的节气门体轴承，其特征在于，所述第一密封圈(11)具有环形的本体和从所述本体的径向内侧部向所述径向内侧凸出的环形的第一凸起(111)，所述第二密封圈(12)与所述第一凸起(111)接触。
  3. 根据权利要求2所述的节气门体轴承，其特征在于，所述第二密封圈(12)具有在所述第一凸起(111)的轴向另一侧的部分，从而当所述第一密封圈(11)沿所述节气门体轴承的轴向受压而使所述第一凸起(111)沿所述轴向移动时，所述第二密封圈(12)止挡所述第一凸起(111)。
  4. 根据权利要求3所述的节气门体轴承，其特征在于，所述第二密封圈(12)具有沿所述轴向连接的第二密封圈平部(121)和第二密封圈斜部(122)，所述第二密封圈斜部(122)的外壁面在从轴向一侧向轴向另一侧延伸的过程中逐渐向径向外侧倾斜，所述第一凸起(111)与所述第二密封圈平部(121)接触，所述第二密封圈斜部(122)位于所述第一凸起(111) 的轴向另一侧。
  5. 根据权利要求4所述的节气门体轴承，其特征在于，所述第一密封圈(11)具有与所述第二密封圈斜部(122)相对设置的第一密封圈斜部(112)，所述第一密封圈斜部(112)的内壁面在从所述轴向一侧向所述轴向另一侧延伸的过程中逐渐向径向外侧倾斜，所述第一密封圈斜部(112)与所述第二密封圈斜部(122)之间具有径向间隙。
  6. 根据权利要求1所述的节气门体轴承，其特征在于，所述第一密封圈(11)和所述第二密封圈(12)采用橡胶材料制成，所述第一密封圈(11)的硬度小于所述第二密封圈(12)的硬度，所述第一密封圈(11)的粘度大于所述第二密封圈(12)的粘度。
  7. 一种节气门，其包括节气门体、阀轴(2)和根据权利要求1至6中任一项所述的节气门体轴承，所述第二密封圈内壁与所述阀轴(2)接触从而所述第二密封圈(12)与所述阀轴(2)过盈装配，所述第二密封圈(12)与所述阀轴(2)装配成阀轴整体，所述阀轴整体能够相对于所述外圈整体绕所述轴线转动。
  8. 根据权利要求7所述的节气门，其特征在于，所述阀轴(2)为阶梯轴，所述第二密封圈(12)与所述阀轴(2)的台阶(20)沿所述轴向抵接。
  9. 根据权利要求7所述的节气门，其特征在于，
    所述节气门体轴承(1)还包括第三密封圈(13)，所述第三密封圈(13)在所述节气门体轴承(1)的轴向另一侧的端部安装在所述外圈(16)的径向内侧；
    所述第三密封圈(13)具有环形的第三密封圈(13)外壁和环形的第三密封圈(13)内壁，所述第三密封圈(13)外壁与所述外圈(16)过盈装配，所述第三密封圈内壁具有环形的第三凸起(131)，所述第三凸起(131)与 所述阀轴(2)接触从而所述第三密封圈(13)与所述阀轴(2)过盈装配。
  10. 根据权利要求7所述的节气门，其特征在于，所述节气门还包括蝶阀(3)，所述蝶阀(3)在所述节气门体轴承(1)的轴向一侧安装于所述阀轴(2)。
PCT/CN2019/080189 2019-03-28 2019-03-28 节气门体轴承和节气门 WO2020191739A1 (zh)

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CN201747466U (zh) * 2010-08-06 2011-02-16 南京奥联汽车电子电器有限公司 一种非接触式电子节气门
CN204300139U (zh) * 2014-12-16 2015-04-29 大陆汽车电子(芜湖)有限公司 环形密封圈及节气门轴承
CN204852025U (zh) * 2015-07-24 2015-12-09 无锡诚石轴承有限公司 轴承用高密封性密封圈结构
CN207212503U (zh) * 2017-08-17 2018-04-10 无锡诚石轴承有限公司 节气门专用单列深沟球轴承
CN108412902A (zh) * 2018-05-22 2018-08-17 张家港汉升机械科技有限公司 一种便于润滑的轴承
WO2019217265A1 (en) * 2018-05-07 2019-11-14 Borgwarner Inc. Turbocharger for an internal combustion engine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201747466U (zh) * 2010-08-06 2011-02-16 南京奥联汽车电子电器有限公司 一种非接触式电子节气门
CN204300139U (zh) * 2014-12-16 2015-04-29 大陆汽车电子(芜湖)有限公司 环形密封圈及节气门轴承
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CN207212503U (zh) * 2017-08-17 2018-04-10 无锡诚石轴承有限公司 节气门专用单列深沟球轴承
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