WO2020029192A1 - 弹簧保持件及对中式分离副缸 - Google Patents

弹簧保持件及对中式分离副缸 Download PDF

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Publication number
WO2020029192A1
WO2020029192A1 PCT/CN2018/099690 CN2018099690W WO2020029192A1 WO 2020029192 A1 WO2020029192 A1 WO 2020029192A1 CN 2018099690 W CN2018099690 W CN 2018099690W WO 2020029192 A1 WO2020029192 A1 WO 2020029192A1
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Prior art keywords
spring
end portion
spring holder
stop
stopper
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PCT/CN2018/099690
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English (en)
French (fr)
Inventor
张斌
郑飞翔
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舍弗勒技术股份两合公司
张斌
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Application filed by 舍弗勒技术股份两合公司, 张斌 filed Critical 舍弗勒技术股份两合公司
Priority to CN201880095472.6A priority Critical patent/CN112384711A/zh
Priority to PCT/CN2018/099690 priority patent/WO2020029192A1/zh
Priority to DE112018007896.5T priority patent/DE112018007896T5/de
Publication of WO2020029192A1 publication Critical patent/WO2020029192A1/zh

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    • 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
    • F16D25/082—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member the line of action of the fluid-actuated members co-inciding with the axis of rotation
    • F16D25/083—Actuators therefor
    • 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
    • F16D2300/00—Special features for couplings or clutches
    • F16D2300/12—Mounting or assembling

Definitions

  • the present invention relates to a clutch release system, and in particular, to a spring holder for holding one end portion of a spring on the release bearing side of a center-type release auxiliary cylinder.
  • the invention also relates to a centrifugal separating sub-cylinder comprising the above-mentioned spring holder.
  • the separation bearing of the central separation cylinder (CSC: Concentric slave cylinder) is connected to the spring through a spring holder.
  • the spring provides preload for the separation bearing and helps the separation bearing to achieve self-adjustment.
  • the spring holder is located between the spring and the separation sub-cylinder, and is used to hold the spring in the radial and circumferential directions. The holding in the radial direction is achieved by the outer peripheral surface of the spring against the stop surface of the spring holder in contact with the spring, and the holding in the circumferential direction is performed by the stop portion of the spring holder.
  • the outer ring When the release bearing is operating, the outer ring is connected to the clutch and rotates with the clutch, while the inner ring does not rotate. However, under low temperature conditions, especially when the engine is started at high speed, the lubrication effect provided by the grease is not ideal, resulting in increased friction, so the outer ring will transmit torque to the inner ring, and the inner ring will also rotate. Since the spring holder and the inner ring cannot rotate relative to each other, in this case, the spring holder will rotate relative to the spring, and the end of the spring that abuts against the stopper will pass over the stopper, and then the spring holder will move relative to The spring and its end continue to rotate once and return to the position where the end abuts against the stop, thereby releasing a certain torque.
  • the stopper is usually designed as a slope ( Figure 2).
  • Figures 3a and 3b When the end of the spring passes over the stopper, the first turn of the spiral of the spring moves in the axial direction relative to the spring holder (comparison) Figures 3a and 3b).
  • the axial height of the stop surface located on the radially outer side of the spring is usually not very large, which is approximately equal to the wire diameter of the spring, the first turn of the spiral of the spring is likely to leave the stop surface when axial movement occurs The restriction reaches the axially outer side of the spring holder.
  • the stop of the spring end by such a stop causes the spring end to not particularly easily skip the stop. Therefore, when the torque is large, the second radial direction of the spiral of the spring often occurs. Expansion phenomenon.
  • the present invention has been made based on the shortcomings of the prior art, and the object of the present invention is to provide a spring holder, which allows the end of the spring to easily pass over the stopper, thereby avoiding the first axial direction of the spiral of the spring Moving outside the spring holder or the second turn of the spiral of the spring expands radially outward.
  • a spring holder is used to hold one end portion of a spring on a release bearing side of a center-type separation sub-cylinder, the spring holder having an axial extension extending in an axial direction of the center-type separation sub-cylinder.
  • the radially outer stop surface of the end portion of the spring, the spring holder further has a stop portion, the stop portion extends from the stop surface to the radially inner side, and the stop portion A side surface in contact with the end portion of the spring intersects the radial direction of the spring holder, so that when the end portion of the spring is pressed against the side surface, the end portion of the spring is easily Slips radially inward.
  • the axial height of the stop surface of the spring holder is approximately equal to twice the wire diameter of the spring.
  • a side surface of the stopper portion that does not contact an end portion of the spring also intersects a radial direction of the spring holder.
  • a side surface of the stopper portion that is in contact with the end portion of the spring is formed as a flat surface.
  • a side surface of the stopper portion that is in contact with the end portion of the spring is formed in an arc shape.
  • the stopper portion is formed as a triangle, two vertices of the triangle are located in the stop surface, and the other vertex of the triangle is located A radially inner side of the stop surface.
  • a centering type separation sub-cylinder according to an embodiment of the present invention has the above-mentioned spring holder.
  • the end portion of the spring extends obliquely with respect to the radial direction.
  • the end portion of the spring is formed in a hemispherical shape.
  • the spring holder includes a radial extension axially abutting the end portion of the spring, and the stop surface extends from an outer peripheral edge of the radial extension toward an axial side,
  • the radial width a of the radially extending portion, the radial height h of the stopping portion, and the wire diameter d of the spring satisfy the following conditions: a ⁇ d + h.
  • the side surface of the stopper portion of the spring holder contacting the end of the spring intersects the radial direction of the spring holder, so that the end portion of the spring easily passes over the stopper, thereby avoiding the first of the spiral of the spring.
  • the coil moves axially beyond the spring holder or the second coil of the spiral of the spring expands radially outward.
  • FIG. 1 is a schematic axial sectional view of a center-type separation auxiliary cylinder.
  • FIG. 2 is a schematic perspective view showing a spring holder in the related art.
  • FIG. 3a-3b show axial sectional views of the spring holder shown in FIG.
  • FIG. 4 shows a schematic perspective view of a spring holder according to an embodiment of the present invention.
  • Fig. 5 shows a top view of a spring holder according to an embodiment of the invention, in which the spring housed therein is schematically shown.
  • FIG. 6a-6b show axial sectional views of the spring holder shown in FIG.
  • 1,1 'spring holder 1,1 'spring holder; 2 springs; 3 outer ring of release bearing; 4 inner ring of release bearing; 5 cylinder block;
  • FIG. 1 is a schematic axial cross-sectional view of a center-type separation auxiliary cylinder 100.
  • the center-type separation sub-cylinder 100 has a spring 2, a separation bearing (the separation bearing includes an outer ring 3 and an inner ring 4), a cylinder block 5, and a spring holder 1 that holds the spring 2 outside the radial direction R of the cylinder block 5.
  • the axial direction A in the figure is the axial direction of the centrifugal separation sub-cylinder 100.
  • Fig. 2 shows a schematic perspective view of a spring holder 1 'in the prior art.
  • the spring holder 1 ′ includes a radially extending portion 14, a stop surface 12 extending from the outer peripheral edge of the radially extending portion 14 toward one axial side (the cylinder block 5 side), and an inner peripheral edge of the radially extending portion 14.
  • the holding portion 13 extends toward the other side in the axial direction (the release bearing side).
  • the spring 2 (not shown in FIG. 2) abuts against the stop surface 12 from the radial inside.
  • a stopper portion 10 ' is formed on the radially inner side of the stopper surface 12, and the stopper portion 10' is designed in a slope shape.
  • Such spring holders are usually manufactured in two steps, and in the second step, a ramp-shaped stop 10 'is formed by stamping.
  • the disadvantages here are: First, since the side surface 15 '(for example, the side shown in the figure or the opposite side thereof) of the stop portion 10' that is in contact with the end of the spring extends substantially in the radial direction, the end of the spring It is difficult for the part to slide radially inward on the side to pass the stopper 10 ′.
  • FIG. 3a-3b show axial sectional views of the spring holder shown in FIG. It can be seen in FIG. 3 a that the end of the spring 2 abuts against the stop surface 12 in the radial direction. The stopper portion 10 'abuts against the end portion of the spring 2 in the circumferential direction, thereby preventing the spring holder 1' and the spring 2 from relatively rotating. The end of the spring 2 in Fig. 3b has passed over the stopper 10 'in the circumferential direction and has moved axially relative to the spring holder 1' along the slope. It can be seen here that a part of the first turn of the spiral of the spring lies axially outside the stop surface 12 of the spring holder 1 ', so that it can come off the spring holder 1'. The holding portion 13 and the interference fit portion 11 can also be seen in Figs. 3a-3b.
  • FIG. 4 shows a schematic perspective view of a spring holder according to an embodiment of the present invention.
  • the spring holder 1 may be the same as the spring holder 1 ', so the description of other parts is omitted.
  • the stopper portion 10 extends radially inward from the stopper surface 12, and the side surface 15 of the stopper portion 10 that contacts the end of the spring intersects the radial direction of the spring holder 1.
  • the side surface 15 of the stopper portion 10 that is in contact with the end portion of the spring may be the side surface shown in the figure or the side surface opposite to the side surface.
  • the sides that are not in contact with the ends of the spring can then be designed to extend in the radial direction or also intersect the radial direction of the spring holder 1.
  • the stopper portion 10 in a section of the stopper portion 10 perpendicular to the axial direction A, is substantially triangular, and two portions in the circumferential direction of the spring holder 1 of the stopper portion 10. Opposite sides can be used to make contact with the ends of the spring.
  • the side surface 15 may also be arc-shaped.
  • Fig. 5 shows a top view of a spring holder according to one embodiment of the invention, wherein the spring 2 housed in the spring holder is shown schematically.
  • the end portion 20 of the spring 2 abuts the side surface 15 of the stop portion 10.
  • the end surface of the end portion 20 of the spring 2 is inclined with respect to the radial direction. Since the side surface 15 of the stopper portion 10 in contact with the end portion of the spring intersects the radial direction of the spring holder 1, in particular, it is substantially parallel to the end surface of the end portion 20 of the spring.
  • the elastic deformation occurs radially inward so as to pass over the stopper portion 10 without protruding from the stopper surface in the axial direction A.
  • the radial width a of the radial extension portion 14, the radial height h of the stopper portion 10, and the wire diameter d of the spring have the following requirements: a ⁇ d + h.
  • end surface of the end portion 20 of the spring 2 need not be a flat surface, and the end portion 20 of the spring 2 may also be formed into a smooth shape such as a hemisphere to facilitate the end portion 20 of the spring 2 to slide along the side surface 15.
  • FIG. 6a-6b show axial sectional views of the spring holder shown in FIG. It can be seen in Fig. 6a that the end 20 of the spring abuts against the stop surface 12 in the radial direction.
  • the end 20 of the spring in FIG. 6 b is already located radially inward of the stop 10. Therefore in the design according to the invention, the end 20 of the spring passes over the stop 10 from the radial inside, rather than axially as in the prior art, which reduces the end of the spring from the spring holder 1 Risk of escaping in the axial direction.
  • the side surface 15 of the stopper portion 10 in contact with the end of the spring intersects the radial direction of the spring holder 1, the side surface 15 cooperates with the end portion 20 of the spring to make it easier for the end portion 20 of the spring to pass over the stopper portion 10.
  • the stop surface 12 shown in the figure is only schematically shown, and it can be seen that, compared with the stop surface of the prior art, the axial height of the stop surface according to the present invention is larger, and preferably a spring wire diameter Twice.

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  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Springs (AREA)

Abstract

一种用于离合器分离系统的弹簧保持件（1）及对中式分离副缸（100），其中弹簧保持件（1）用于在对中式分离副缸（100）的分离轴承（3、4）侧保持弹簧（2）的一个端部（20），所述弹簧保持件（1）具有沿对中式分离副缸（100）的轴向延伸的、位于所述弹簧（2）的所述端部（20）的径向外侧的止挡面（12），所述弹簧保持件（1）还具有止挡部（10），所述止挡部（10）从所述止挡面（12）向径向内侧延伸，并且所述止挡部（10）的与所述弹簧（2）的所述端部（20）接触的侧面（15）与所述弹簧保持件（1）的径向相交，从而使得在所述弹簧（2）的所述端部（20）压抵所述侧面（15）时，所述弹簧（2）的所述端部（20）易向径向内侧发生滑移。上述弹簧保持件（1）使得弹簧（2）的端部（20）容易越过止挡部，进而避免了弹簧（2）的螺旋的第一圈轴向移动到弹簧保持件（1）之外或者弹簧（2）的螺旋的第二圈径向向外扩张。

Description

弹簧保持件及对中式分离副缸 技术领域
本发明涉及离合器分离系统，具体涉及弹簧保持件，其用于在对中式分离副缸的分离轴承侧保持弹簧的一个端部。本发明还涉及对中式分离副缸，其包括上述弹簧保持件。
背景技术
对中式分离副缸(CSC：Concentric slave cylinder)的分离轴承通过弹簧保持件连接到弹簧，弹簧为分离轴承提供预加载并且帮助分离轴承实现自调整。弹簧保持件位于弹簧和分离副缸之间，并用于在径向和周向上保持弹簧。径向上的保持通过弹簧的外周面抵靠弹簧保持件的与弹簧接触的止挡面实现，而周向上的保持则通过弹簧保持件的止挡部实现。
在分离轴承工作时，外圈连接到离合器并且随着离合器一起转动，而内圈不发生转动。然而在低温情况下，特别是当发动机以高速启动的时候，由润滑脂提供的润滑效果不理想导致摩擦增大，因此外圈会将扭矩传递到内圈，内圈也会发生转动。由于弹簧保持件和内圈不能发生相对转动，所以在这种情况下弹簧保持件会相对于弹簧转动，弹簧的抵靠在止挡部的端部会越过止挡部，之后弹簧保持件会相对于弹簧及其端部继续转动一周并再次回到端部抵靠止挡部的位置，由此释放一定的扭矩。
现有技术中，止挡部通常设计成斜坡状(图2)，在弹簧的端部越过止挡部的时候，弹簧的螺旋的第一圈相对于弹簧保持件在轴向上发生移动(对比图3a和图3b)。由于位于弹簧的径向外侧的止挡面的轴向高度通常并不是很大，大致等于弹簧的线径，所以在轴向运动发生时，弹簧的螺旋的第一圈很有可能脱离止挡面的限制到达弹簧保持件的轴向外侧。另外，现有设计中这 种止挡部对弹簧端部的止挡导致弹簧端部并不是特别容易跳过止挡部，因此当扭矩较大时，经常发生弹簧的螺旋的第二圈径向向外扩张的现象。
发明内容
基于上述现有技术的缺陷做出了本发明，本发明的发明目的在于提供一种弹簧保持件，其使得弹簧的端部容易越过止挡部，进而避免了弹簧的螺旋的第一圈轴向移动到弹簧保持件之外或者弹簧的螺旋的第二圈径向向外扩张。
根据本发明的一个实施方式的弹簧保持件用于在对中式分离副缸的分离轴承侧保持弹簧的一个端部，所述弹簧保持件具有沿对中式分离副缸的轴向延伸的、位于所述弹簧的所述端部的径向外侧的止挡面，所述弹簧保持件还具有止挡部，所述止挡部从所述止挡面向径向内侧延伸，并且所述止挡部的与所述弹簧的所述端部接触的侧面与所述弹簧保持件的径向相交，从而使得在所述弹簧的所述端部压抵所述侧面时，所述弹簧的所述端部易向径向内侧发生滑移。
特别地，所述弹簧保持件的止挡面的轴向高度大致等于所述弹簧的线径的两倍。
特别地，所述止挡部的不与所述弹簧的端部接触的侧面也与所述弹簧保持件的径向相交。
特别地，所述止挡部的与所述弹簧的所述端部接触的侧面形成为平面。
特别地，在所述止挡部的与所述轴向垂直的截面中，所述止挡部的与所述弹簧的所述端部接触的侧面形成为圆弧状。
特别地，在所述止挡部的与所述轴向垂直的截面中，所述止挡部形成为三角形，该三角形的两个顶点位于所述止挡面中，该三角形的另一个顶点位于所述止挡面的径向内侧。
根据本发明的一个实施方式的对中式分离副缸具有上述弹簧保持件。
特别地，所述弹簧的所述端部相对于所述径向倾斜地延伸。
特别地，所述弹簧的所述端部形成为半球状。
特别地，所述弹簧保持件包括与所述弹簧的所述端部轴向抵靠的径向延伸部，所述止挡面从所述径向延伸部的外周缘朝向轴向一侧延伸，所述径向延伸部的径向宽度a、所述止挡部的径向高度h和所述弹簧的线径d满足以下条件：a≥d+h。
根据本发明的弹簧保持件的止挡部的与弹簧的端部接触的侧面与弹簧保持件的径向相交，从而使得弹簧的端部容易越过止挡部，进而避免了弹簧的螺旋的第一圈轴向移动到弹簧保持件之外或者弹簧的螺旋的第二圈径向向外扩张。
附图说明
图1示出了对中式分离副缸的轴向剖视示意图。
图2是示出了现有技术中的弹簧保持件的立体示意图。
图3a-3b示出了图2中示出的弹簧保持件的轴向剖视图。
图4示出了根据本发明的一个实施方式的弹簧保持件的立体示意图。
图5示出了根据本发明的一个实施方式的弹簧保持件的俯视图，其中示意性示出了容纳在其中的弹簧。
图6a-6b示出了图4中示出的弹簧保持件的轴向剖视图。
附图标记说明
1，1’弹簧保持件；2弹簧；3分离轴承的外圈；4分离轴承的内圈；5缸体；
10，10’止挡部；11过盈配合部；12止挡面；13保持部；14径向延 伸部；15，15’止挡部的与弹簧的端部接触的侧面；20弹簧的端部；
100对中式分离副缸；
A轴向；R径向。
具体实施方式
以下参照说明书附图来说明本发明的具体实施方式。
图1示出了对中式分离副缸100的轴向剖视示意图。对中式分离副缸100具有弹簧2、分离轴承(分离轴承包括外圈3和内圈4)、缸体5和在缸体5的径向R外侧保持弹簧2的弹簧保持件1。图中的轴向A为对中式分离副缸100的轴向。
图2示出了现有技术中的弹簧保持件1’的立体示意图。弹簧保持件1’具有：径向延伸部14；从径向延伸部14的外周缘朝向轴向一侧(缸体5侧)延伸的止挡面12；以及从径向延伸部14的内周缘朝轴向另一侧(分离轴承侧)延伸的保持部13。在弹簧保持件1’装配到对中式分离副缸100中后，保持部13位于内圈4的径向内侧，并且保持部13上形成的过盈配合部11朝径向外部凸起，从而与内圈4形成过盈配合。图2中未示出的弹簧2从径向内侧贴靠止挡面12。在止挡面12的径向内侧形成有止挡部10’，在此止挡部10’设计成斜坡状。通常通过两个步骤来制造此类弹簧保持件，在第二个步骤中通过冲压形成斜坡状的止挡部10’。在此存在的缺陷为：首先，由于止挡部10’的与弹簧的端部接触的侧面15’(例如图中所示一侧或者与其相反一侧)基本沿径向延伸，所以弹簧的端部不易在该侧面向径向内侧滑动从而越过止挡部10’；第二，弹簧的抵靠在止挡部的端部越过止挡部10’之后，会相对于弹簧保持件1’发生轴向运动，因此弹簧的螺旋的第一圈有从弹簧保持件1’脱出的风险。
图3a-3b示出了图2中示出的弹簧保持件的轴向剖视图。图3a中可见弹簧2的端部在径向上抵靠在止挡面12处。止挡部10’在周向上抵靠弹簧2的端部，由此阻止弹簧保持件1’和弹簧2发生相对转动。图3b中的弹簧2的端部已经在 周向上越过止挡部10’，并沿斜坡相对于弹簧保持件1’发生轴向运动。在此可见弹簧的螺旋的第一圈的一部分在轴向上位于弹簧保持件1’的止挡面12之外，因此可能从弹簧保持件1’脱出。图3a-3b中还可见保持部13和过盈配合部11。
图4示出了根据本发明的一个实施方式的弹簧保持件的立体示意图。弹簧保持件1与弹簧保持件1’的主要区别在于1)止挡部10的结构，2)止挡面12的轴向高度。除此之外弹簧保持件1可以与弹簧保持件1’相同，因此省略关于其他部分的描述。止挡部10从止挡面12向径向内侧延伸，并且止挡部10的与弹簧的端部接触的侧面15与弹簧保持件1的径向相交。在此根据弹簧的端部的设置，止挡部10的与弹簧的端部接触的侧面15可以为图中所示的侧面也可以为与该侧面相反的侧面。而不与弹簧的端部接触的侧面则可以设计成沿径向延伸或者也与弹簧保持件1的径向相交。
更具体地，在图4所示的示例中，在止挡部10的与轴向A垂直的截面中，止挡部10为大致三角形，止挡部10的弹簧保持件1的周向上的两个相反的侧面可以用于与弹簧的端部接触。在此侧面15也可以为圆弧状。
图5示出了根据本发明的一个实施方式的弹簧保持件的俯视图，其中示意性示出了容纳在弹簧保持件中的弹簧2。弹簧2的端部20抵靠于止挡部10的侧面15。这里，弹簧2的端部20的端面相对于径向倾斜。由于止挡部10的与弹簧的端部接触的侧面15与弹簧保持件1的径向相交，特别是与弹簧的端部20的端面大致平行，相对于现有技术，弹簧的端部20更易向径向内侧发生弹性形变，从而在没有在轴向A上从止挡面凸出的情况下越过止挡部10。在此为了实现上述动作，对径向延伸部14的径向宽度a，止挡部10的径向高度h和弹簧的线径d具有以下要求：a≥d+h。
应当理解，弹簧2的端部20的端面不必为平面，弹簧2的端部20还可以形成为半球状等圆滑形状，以便于弹簧2的端部20沿着侧面15滑移。
图6a-6b示出了图4中示出的弹簧保持件的轴向剖视图。图6a中可见弹簧 的端部20在径向上抵靠于止挡面12。图6b中的弹簧的端部20已经位于止挡部10的径向内侧。因此在根据本发明的设计中，弹簧的端部20从径向内侧越过止挡部10，而不是像现有技术中从轴向上越过，这就降低了弹簧的端部从弹簧保持件1沿轴向脱出的风险。而且由于止挡部10的与弹簧的端部接触的侧面15与弹簧保持件1的径向相交，该侧面15与弹簧的端部20配合使得弹簧的端部20更容易越过止挡部10。图中所示的止挡面12仅为示意性示出，可以看出，相对于现有技术的止挡面，根据本发明的止挡面的轴向高度更大，优选为弹簧线径的二倍。
本发明的保护范围不限于上述具体实施方式中说明的具体实施例，而是只要满足本发明的权利要求的技术特征的组合就落入了本发明的保护范围之内。

Claims (10)

  1. 一种弹簧保持件，其用于在对中式分离副缸的分离轴承侧保持弹簧的一个端部，所述弹簧保持件具有沿对中式分离副缸的轴向延伸的、位于所述弹簧的所述端部的径向外侧的止挡面，其特征在于，所述弹簧保持件还具有止挡部，所述止挡部从所述止挡面向径向内侧延伸，并且所述止挡部的与所述弹簧的所述端部接触的侧面与所述弹簧保持件的径向相交，从而使得在所述弹簧的所述端部压抵所述侧面时，所述弹簧的所述端部易向径向内侧发生滑移。
  2. 根据权利要求1所述的弹簧保持件，其特征在于，所述弹簧保持件的止挡面的轴向高度大致等于所述弹簧的线径的两倍。
  3. 根据权利要求1或2所述的弹簧保持件，其特征在于，所述止挡部的不与所述弹簧的端部接触的侧面也与所述弹簧保持件的径向相交。
  4. 根据权利要求1或2所述的弹簧保持件，其特征在于，所述止挡部的与所述弹簧的所述端部接触的侧面形成为平面。
  5. 根据权利要求1或2所述的弹簧保持件，其特征在于，在所述止挡部的与所述轴向垂直的截面中，所述止挡部的与所述弹簧的所述端部接触的侧面形成为圆弧状。
  6. 根据权利要求1或2所述的弹簧保持件，其特征在于，在所述止挡部的与所述轴向垂直的截面中，所述止挡部形成为三角形，该三角形的两个顶点位于所述止挡面中，该三角形的另一个顶点位于所述止挡面的径向内侧。
  7. 一种对中式分离副缸，其特征在于，所述对中式分离副缸具有如权利要求1-6中任一项所述的弹簧保持件。
  8. 根据权利要求7所述的对中式分离副缸，其特征在于，所述弹簧的所述端部相对于所述径向倾斜地延伸。
  9. 根据权利要求7所述的对中式分离副缸，其特征在于，所述弹簧的所 述端部形成为半球状。
  10. 根据权利要求7所述的对中式分离副缸，其特征在于，所述弹簧保持件包括与所述弹簧的所述端部轴向抵靠的径向延伸部，所述止挡面从所述径向延伸部的外周缘朝向轴向一侧延伸，所述径向延伸部的径向宽度a、所述止挡部的径向高度h和所述弹簧的线径d满足以下条件：a≥d+h。
PCT/CN2018/099690 2018-08-09 2018-08-09 弹簧保持件及对中式分离副缸 WO2020029192A1 (zh)

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