WO2020029193A1 - 密封件保持件及对中式分离副缸 - Google Patents

密封件保持件及对中式分离副缸 Download PDF

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Publication number
WO2020029193A1
WO2020029193A1 PCT/CN2018/099691 CN2018099691W WO2020029193A1 WO 2020029193 A1 WO2020029193 A1 WO 2020029193A1 CN 2018099691 W CN2018099691 W CN 2018099691W WO 2020029193 A1 WO2020029193 A1 WO 2020029193A1
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Prior art keywords
seal
piston
holding portion
seal holder
side holding
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PCT/CN2018/099691
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English (en)
French (fr)
Inventor
张斌
Original Assignee
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 CN201880095435.5A priority Critical patent/CN112384712A/zh
Priority to PCT/CN2018/099691 priority patent/WO2020029193A1/zh
Publication of WO2020029193A1 publication Critical patent/WO2020029193A1/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

Definitions

  • the present invention relates to a clutch release system, and more particularly to a seal holder.
  • the invention also relates to a centrifugal separating sub-cylinder comprising the above-mentioned seal holder.
  • a seal holder In a centrifugal separating cylinder (CSC: Concentric Slave Cylinder), a seal holder is used to hold the seal and connect it to a piston.
  • CSC Concentric Slave Cylinder
  • a seal holder When the engine is running, vibration is transmitted from the clutch to the release bearing and through the piston to the seal. Axial vibration is absorbed by the play between the piston and the seal holder.
  • the brake fluid pushes the seal and the seal holder toward the piston, first causing the clearance to disappear, and then the seal and the seal holder continue to move toward the piston to push the piston to release the clutch. . After releasing the pedal, the brake fluid leaves the separation cylinder and returns along the same path.
  • the present invention has been made based on the aforementioned shortcomings of the prior art, and an object of the present invention is to provide a seal holder that prevents the clutch pedal from returning to the original position while eliminating vibration.
  • a seal holder has an axially extending portion, a seal-side holding portion, and a piston-side holding portion, and the seal-side holding portion and / or the piston-side holding portion has An elastic member for elastically preloading the piston in the axial direction.
  • the elastic member is a spring piece protruding from the holding portion on the seal side and / or the holding portion on the piston side and bent toward the piston.
  • the seal holder has a plurality of elastic members evenly distributed on the circumference.
  • the seal holder is made of metal.
  • the seal holder is made of steel.
  • a centering type separation sub-cylinder includes a piston, a seal, and the above-mentioned seal holder.
  • the piston has an engaging portion protruding in the radial direction, the holding portion on the piston side is engaged with the engaging portion, and the elastic member of the seal holder is directed from the seal holder toward The engaging portion extends obliquely.
  • the engaging portion is separated from a portion of the piston-side holding portion other than the elastic member.
  • the seal-side holding portion includes a seal clamping portion having a generally trapezoidal axial cross-section, and a bottom portion of the seal clamping portion is clamped between the seal and the piston.
  • the bottom portion is formed with an elastic member extending obliquely toward the piston.
  • the seal holder according to the present invention has an elastic component that pre-loads the piston elastically, which eliminates or at least substantially reduces the clearance between the piston and the seal holder, and eliminates the need to eliminate the clearance first when the clutch pedal is depressed, so Greatly improved the situation where the clutch pedal cannot be returned to the original position when it is released. In this case, the vibration-eliminating effect of the play is achieved by the elastic member.
  • FIG. 1 shows a partial axial sectional view of a centering type separation auxiliary cylinder in the prior art, and at this time, the clutch pedal has not been depressed.
  • FIG. 2 shows a partial axial sectional view of a centering type separation auxiliary cylinder in the prior art, and the clutch pedal has been depressed at this time.
  • FIG. 3 shows a schematic partial axial sectional view of a centering type separation auxiliary cylinder in the prior art, and the clutch pedal has been released at this time.
  • FIG. 4 shows a schematic perspective view of a seal holder in the prior art.
  • FIG. 5 shows a schematic perspective view of a seal holder according to an embodiment of the present invention.
  • Fig. 6 shows a schematic partial axial sectional view of a center-type separation sub-cylinder with a seal holder according to an embodiment of the present invention.
  • 1,1 'seal holder 1,1 'seal holder; 2 seals; 3 pistons; 4 clearance; 5 brake fluid;
  • FIG. 1 shows a partial axial sectional view of a centering type separation auxiliary cylinder in the prior art, and at this time, the clutch pedal has not been depressed. It can be seen here that there is a play 4 between the piston 3 of the center-separated sub-cylinder 100 and the seal holder 1 '.
  • the seal holder 1 ' is used to hold the seal 2.
  • the axial direction A in the figure is the axial direction of the centrifugal type separation sub-cylinder 100 and also the axial direction of the seal holder 1 '.
  • FIG. 2 shows a partial axial sectional view of a centering type separation auxiliary cylinder in the prior art, and the clutch pedal has been depressed at this time.
  • the brake fluid 5 pushes the seal 2 and the seal holder 1 ′ together from the lower part of the figure to move upwards in the figure.
  • the clearance 4 is eliminated, and then if the pedal is further depressed, it will be pushed by the brake fluid 5
  • the seal 2, the seal holder 1 ′ and the piston 3 move upward together, thereby disengaging the clutch.
  • Fig. 3 shows a partial axial sectional view of a centering type separation auxiliary cylinder in the prior art, at which time the clutch pedal has been released.
  • the brake fluid 5 is withdrawn from the centrifugal separation sub-cylinder, and the upward pressure is no longer under the seal 2.
  • the seal holder 1 'does not actively return to the position shown in Fig. 1 without external force, that is, the play 4 does not actively occur. Therefore, at this time, the clutch pedal cannot actively return to the original position. After that, due to the vibration, the play 4 appears again between the piston 3 and the seal holder 1 ', and the clutch pedal still does not return to the original position. If the clutch pedal is depressed again, the play 4 needs to be eliminated again.
  • FIG. 4 shows a schematic perspective view of a seal holder in the prior art.
  • the seal holder 1 ' is formed in a ring shape, and includes an axially extending portion 11, a seal-side holding portion 12, and a piston-side holding portion 13.
  • the holder-side holding portion 12 and the piston-side holding portion 13 extend radially from the axial ends of the axially extending portion 11.
  • the shape of the seal-side holding portion 12 matches the shape of the side of the seal 2 facing the seal holder 1 ', thereby achieving reliable holding of the seal 2.
  • FIG. 5 shows a schematic perspective view of a seal holder according to an embodiment of the present invention.
  • the main difference between the seal holder 1 and the seal holder 1 ' is that an elastic member 10 is formed at the piston-side holding portion 13 and the elastic member 10 is a spring piece.
  • the elastic member 10 forms a preload on the piston 3, so that there is no play between the seal holder 1 and the piston 3, but the elastic connection between the piston 3 and the seal holder 1 is achieved by the elasticity of the elastic member 10 To achieve absorption of axial vibration.
  • four spring pieces bent toward the seal 2 are provided at the piston-side holding portion 13 schematically.
  • the piston-side holding portion 13 is bent from the axial end (the upper end in FIGS. 5 and 6) of the axially extending portion 11 to extend in the radial direction.
  • the holding portion 13 on the piston side is used to engage with the engaging portion 31 of the piston 3 protruding in the radial direction, so as to prevent the seal holder 1 and the piston 3 from separating in the axial direction A.
  • the elastic member 10 in the form of a spring piece extends obliquely toward the engaging portion 31 and abuts the engaging portion 31. As can be seen from FIG. 6, when the engaging portion 31 does not deform or significantly deform the elastic member 10, the engaging portion 31 is separated from the main body portion of the piston-side holding portion 13 except the elastic member 10. .
  • the elastic member 10 is not limited to the holding portion 13 formed on the piston side. It is also conceivable to provide the elastic member 10 at the same time or only to the holding portion 12 on the seal side. More specifically, referring to FIGS. 5 and 6, the seal-side holding portion 12 includes a seal holding portion having a substantially trapezoidal axial cross-section, and a bottom portion 121 of the seal holding portion is held between the seal 2 and the piston. Between 3. A plurality of elastic members 10 in the form of a spring leaf extending obliquely toward the piston 3 may be formed on the bottom 121. Thus, when the piston 3 does not deform or significantly deform these elastic members 10, the piston 3 is separated from the main body portion of the bottom portion 121 (the seal-side holding portion 12) other than the elastic member 10.
  • the number of the elastic members 10 is not limited to four, however, the plurality of elastic members 10 are preferably evenly distributed on the circumference.
  • Fig. 6 shows a schematic partial axial sectional view of a centrifugal type separation sub-cylinder with a seal holder 1 according to an embodiment of the present invention. It can be seen here that there is no play between the seal holder 1 and the piston 3, so there is no need to first eliminate the play when the clutch pedal is depressed. Therefore, when the clutch pedal is returned, there is no problem that it cannot return to the initial position. On the other hand, since the elastic member 10 is formed on the piston-side holding portion 13, elastic preloading of the piston 3 is achieved. When there is axial vibration, the influence of the vibration on the seal can be eliminated by the elasticity of the elastic member 10.

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

Abstract

离合器分离系统的密封件保持件（1，1'）及具有该密封件保持件（1，1'）的对中式分离副缸（100），密封件保持件（1，1'）具有轴向延伸部（11）、密封件侧的保持部（12）和活塞侧的保持部（13），密封件侧的保持部（12）和/或活塞侧的保持部（13）具有弹性部件（10），弹性部件（10）用于对活塞（3）进行轴向上的弹性预加载。密封件保持件（1，1'）在消除振动的同时防止离合器踏板不能回到原始位置。

Description

密封件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，具体涉及密封件保持件。本发明还涉及对中式分离副缸，其包括上述密封件保持件。
背景技术
在对中式分离副缸(CSC：Concentric slave cylinder)中，密封件保持件用于保持密封件并且将其连接到活塞。由于发动机运转时，振动从离合器传到分离轴承并通过活塞传到密封件。通过活塞和密封件保持件之间的游隙来吸收轴向振动。在离合器踏板被踩下的时候，制动液推动密封件和密封件保持件朝活塞运动，首先使上述游隙消失，之后密封件和密封件保持件继续朝活塞方向运动从而推动活塞使离合器分离。在松开踏板之后，制动液离开分离副缸并沿原路返回。然而密封件和密封件保持件在制动液全部离开副缸之后，不会主动继续朝着远离活塞的方向运动，也就是说，此时游隙不会出现。因此踏板不会回到原始位置，而是位于踩下踏板刚好使游隙完全消失的位置。之后在汽车行驶过程中由于振动可能再次出现游隙，而踏板再次被踩下时再次需要一定行程用来消除游隙。
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密封件保持件，其在消除振动的同时防止离合器踏板不能回到原始位置。
根据本发明的一个实施方式的密封件保持件具有轴向延伸部、密封件侧的保持部和活塞侧的保持部，所述密封件侧的保持部和/或所述活塞侧的保持部具有弹性部件，所述弹性部件用于对所述活塞进行轴向上的弹性预加载。
特别地，所述弹性部件为从所述密封件侧的保持部和/或所述活塞侧的保持部伸出并朝所述活塞弯折的弹簧片。
特别地，所述密封件保持件具有多个在圆周上均匀分布的弹性部件。
特别地，所述密封件保持件由金属制成。
特别地，所述密封件保持件由钢制成。
根据本发明的一个实施方式的对中式分离副缸具有：活塞；密封件以及上述密封件保持件。
特别地，所述活塞具有沿径向突出的卡合部，所述活塞侧的保持部与所述卡合部卡合，所述密封件保持件的弹性部件从所述密封件保持件朝向所述卡合部倾斜地延伸。
特别地，在所述弹性部件未变形或未明显变形时，所述卡合部与所述活塞侧的保持部的除所述弹性部件之外的部分分隔开。
特别地，所述密封件侧的保持部包括轴向截面大致为梯形的密封件夹持部，所述密封件夹持部的底部被夹持在所述密封件和所述活塞之间。
特别地，所述底部形成有朝向所述活塞倾斜延伸的弹性部件。
根据本发明的密封件保持件具有对活塞弹性预加载的弹性部件，消除或至少大幅减小了活塞和密封件保持件之间的游隙，无需在踩下离合器踏板时先消除游隙，因此大大改善了松开离合器踏板时其无法回到原始位置的情况。而游隙实现的振动消除作用在此通过弹性部件实现。
附图说明
图1示出了现有技术中的对中式分离副缸的局部轴向剖视示意图，此时还没有踩下离合器踏板。
图2示出了现有技术中的对中式分离副缸的局部轴向剖视示意图，此时已经踩下离合器踏板。
图3示出了现有技术中的对中式分离副缸的局部轴向剖视示意图，此时已经松开离合器踏板。
图4示出了现有技术中的密封件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密封件保持件的立体示意图。
图6示出了对中式分离副缸的局部轴向剖视示意图，其中具有根据本发明的一个实施方式的密封件保持件。
附图标记说明
1，1’密封件保持件；2密封件；3活塞；4游隙；5制动液；
10弹性部件；11轴向延伸部；12密封件侧的保持部；13活塞侧的保持部；31卡合部；121密封件夹持部的底部；
100对中式分离副缸；
A轴向。
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示出了现有技术中的对中式分离副缸的局部轴向剖视示意图，此时还没有踩下离合器踏板。在此可见对中式分离副缸100的活塞3和密封件保持件1’之间存在游隙4。密封件保持件1’用于保持密封件2。图中轴向A为对中式分离副缸100的轴向，也为密封件保持件1’的轴向。
图2示出了现有技术中的对中式分离副缸的局部轴向剖视示意图，此时已经踩下离合器踏板。在此制动液5从图中下方推动密封件2和密封件保持件1’一起朝图中上方运动，首先消除游隙4，之后如果踏板被继续向下踩，会由制动液5推动密封件2、密封件保持件1’和活塞3一起朝上运动，从而使离合器分离。
图3示出了现有技术中的对中式分离副缸的局部轴向剖视示意图，此时 已经松开离合器踏板。此时制动液5从对中式分离副缸撤回，密封件2的下方不再受到向上的压力。然而由于密封件保持件1’在没有外力的情况下，不会自己主动回到图1所示的位置，即游隙4不会主动出现。因此，此时离合器踏板无法主动回到原始位置。之后由于振动，活塞3和密封件保持件1’之间会再次出现游隙4，而离合器踏板还是没有回到原始位置。如果再次踩下离合器踏板，需要再次消除游隙4。
图4示出了现有技术中的密封件保持件的立体示意图。密封件保持件1’形成为环形，具有轴向延伸部11、密封件侧的保持部12和活塞侧的保持部13。其中密封件侧的保持部12和活塞侧的保持部13从轴向延伸部11的轴向两端出发朝径向延伸。密封件侧的保持部12的形状与密封件2的朝向密封件保持件1’的一侧的形状匹配，从而实现对密封件2的可靠的保持。
图5示出了根据本发明的一个实施方式的密封件保持件的立体示意图。密封件保持件1和密封件保持件1’的主要区别在于，在活塞侧的保持部13处形成有弹性部件10，在此弹性部件10为弹簧片。弹性部件10对活塞3形成预加载，从而在密封件保持件1和活塞3之间不存在游隙，而是由弹性部件10的弹性来实现活塞3和密封件保持件1之间的弹性连接，从而实现对轴向振动的吸收。图中示意性地在活塞侧的保持部13处设置4个朝密封件2弯折的弹簧片。
具体地，活塞侧的保持部13从轴向延伸部11的轴向一端(图5和图6中的上端)弯折而沿径向延伸。活塞侧的保持部13用于与活塞3的沿径向突出的卡合部31卡合，从而防止密封件保持架1与活塞3沿轴向A分开。弹簧片形式的弹性部件10朝向卡合部31倾斜地延伸，从而与卡合部31抵接。从图6中可以看出，在卡合部31未使弹性部件10变形或明显变形的情况下，卡合部31与活塞侧的保持部13的除弹性部件10之外的主体部分分隔开。
弹性部件10不限于形成于活塞侧的保持部13。也可以考虑同时或者仅在密封件侧的保持部12设置弹性部件10。更具体地，参照图5和图6，密封件侧 的保持部12包括轴向截面为大致梯形的密封件夹持部，该密封件夹持部的底部121被夹持在密封件2和活塞3之间。可以在该底部121上形成朝向活塞3倾斜延伸的弹簧片形式的多个弹性部件10。从而在活塞3未使这些弹性部件10变形或明显变形的情况下，活塞3与该底部121(密封件侧的保持部12)的除弹性部件10之外的主体部分分隔开。
弹性部件10的个数也不限于4个，然而多个弹性部件10优选在圆周上均匀分布。
图6示出了对中式分离副缸的局部轴向剖视示意图，其中具有根据本发明的一个实施方式的密封件保持件1。在此可以看出，密封件保持件1和活塞3之间不存在游隙，因此在踩下离合器踏板时无需首先消除游隙。因此在离合器踏板返回时，也不会产生无法回到初始位置的问题。而在活塞侧的保持部13处由于形成有弹性部件10，实现了对活塞3的弹性预加载。在有轴向振动时，可以通过弹性部件10的弹性消除振动对密封件的影响。
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. 一种密封件保持件，其特征在于，所述密封件保持件具有轴向延伸部、密封件侧的保持部和活塞侧的保持部，所述密封件侧的保持部和/或所述活塞侧的保持部具有弹性部件，所述弹性部件用于对所述活塞进行轴向上的弹性预加载。
  2. 根据权利要求1所述的密封件保持件，其特征在于，所述弹性部件为从所述密封件侧的保持部和/或所述活塞侧的保持部伸出并朝所述活塞弯折的弹簧片。
  3. 根据权利要求1或2所述的密封件保持件，其特征在于，所述密封件保持件具有多个在圆周上均匀分布的弹性部件。
  4. 根据权利要求1或2所述的密封件保持件，其特征在于，所述密封件保持件由金属制成。
  5. 根据权利要求1或2所述的密封件保持件，其特征在于，所述密封件保持件由钢制成。
  6. 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：活塞；密封件以及如权利要求1-5中任一项所述的密封件保持件。
  7. 根据权利要求6所述的对中式分离副缸，其特征在于，所述活塞具有沿径向突出的卡合部，所述活塞侧的保持部与所述卡合部卡合，所述密封件保持件的弹性部件从所述密封件保持件朝向所述卡合部倾斜地延伸。
  8. 根据权利要求7所述的对中式分离副缸，其特征在于，在所述弹性部件未变形或未明显变形时，所述卡合部与所述活塞侧的保持部的除所述弹性部件之外的部分分隔开。
  9. 根据权利要求6至8中任一项所述的对中式分离副缸，其特征在于，所述密封件侧的保持部包括轴向截面大致为梯形的密封件夹持部，所述密封件夹持部的底部被夹持在所述密封件和所述活塞之间。
  10. 根据权利要求9所述的对中式分离副缸，其特征在于，所述底部形成有朝向所述活塞倾斜延伸的弹性部件。
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