WO2014101709A1 - 一种具有中央螺栓的凸轮轴调节器 - Google Patents

一种具有中央螺栓的凸轮轴调节器 Download PDF

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Publication number
WO2014101709A1
WO2014101709A1 PCT/CN2013/089950 CN2013089950W WO2014101709A1 WO 2014101709 A1 WO2014101709 A1 WO 2014101709A1 CN 2013089950 W CN2013089950 W CN 2013089950W WO 2014101709 A1 WO2014101709 A1 WO 2014101709A1
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WO
WIPO (PCT)
Prior art keywords
stator
rotor
camshaft
central bolt
compression spring
Prior art date
Application number
PCT/CN2013/089950
Other languages
English (en)
French (fr)
Inventor
何艳桦
欧成
Original Assignee
谢夫勒科技股份两合公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 谢夫勒科技股份两合公司 filed Critical 谢夫勒科技股份两合公司
Priority to US14/655,432 priority Critical patent/US9938863B2/en
Priority to DE112013006206.2T priority patent/DE112013006206T5/de
Publication of WO2014101709A1 publication Critical patent/WO2014101709A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
    • F01L2001/3445—Details relating to the hydraulic means for changing the angular relationship
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
    • F01L2001/3445—Details relating to the hydraulic means for changing the angular relationship
    • F01L2001/34453—Locking means between driving and driven members
    • F01L2001/34456—Locking in only one position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
    • F01L2001/3445—Details relating to the hydraulic means for changing the angular relationship
    • F01L2001/34483—Phaser return springs

Definitions

  • a camshaft adjuster with a central bolt This application claims priority to a Chinese patent application filed on December 25, 2012, filed on the Chinese Patent Office, No. 201210572711.7, entitled “A Camshaft Regulator with a Central Bolt” The entire contents of which are incorporated herein by reference. BACKGROUND OF THE INVENTION 1.
  • the present invention relates to the field of internal combustion engines, and more particularly to a camshaft adjuster having a center bolt for use in the technical field of internal combustion engines.
  • the gas exchange valve is controlled by a cam of a camshaft driven by a crankshaft, wherein the determined phase between the crankshaft and the camshaft can be determined by the arrangement and shape of the cam Valve phase of the valve.
  • the phase of the valve can be influenced by changing the phase between the crankshaft and the camshaft, thereby achieving advantageous effects such as reduced fuel consumption and generation of harmful substances.
  • This means which is a camshaft adjuster that freely selectively adjusts the phase between the crankshaft and the camshaft.
  • a camshaft adjuster comprising an outer rotor or a stator connected to a crankshaft drive, an inner rotor concentrically disposed in a hollow cavity of the stator or a rotor, a front cover, a rear cover , springs and a number of fixing bolts.
  • the front cover and the rear cover are respectively located at two sides of the stator, and the fixing bolt passes through the stator to bond the front cover and the rear cover together.
  • One end of the spring is fixed to the front cover and the other end is fixed to the rotor, so that the rotor and the stator can be connected in a rotationally fixed manner.
  • the spring is a compression spring and has a certain length in the axial direction, if there is no support, the spring may be inclined inside the rotor, which will affect the installation of the center bolt when the rotor is fixed to the camshaft. Therefore, in the camshaft adjuster disclosed in this patent, the front cover projects inwardly to form an annular support means for supporting the front end of the spring, which can effectively prevent the tilt of the spring.
  • a similar camshaft adjustment is also disclosed in U.S. Patent No. 6,450,137.
  • the device also prevents the tilt of the spring by providing a support means on the front cover. Of course, other separately formed support means can also be provided to achieve the support of the spring.
  • the problem to be solved by the present invention is to provide a camshaft adjuster having a structural unit with a center bolt.
  • a camshaft adjuster having a center bolt comprising a stator and a rotor connected to the camshaft in a rotationally fixed manner, the rotor being housed inside the stator and in the rotor and A plurality of working chambers are formed between the stators, a front cover and a rear cover are respectively located at the front and rear sides of the stator and are coupled to the stator by a plurality of bolts, and the first end of a compression spring is buckled to the front cover The second end of the compression spring is fixed to the rotor, and a central bolt is installed into the interior of the camshaft adjuster from an opening provided in the front cover, and the central bolt is provided with a pushable The guide that compresses the spring to the exact position.
  • FIG. 1 is a perspective view of a camshaft adjuster of the present invention
  • FIG. 2 is a front view of the camshaft adjuster shown in FIG. 1.
  • FIG. 3 is a cross-sectional view of the camshaft adjuster shown in FIG.
  • FIG. 4 is a cross-sectional view of the camshaft adjuster of Figure 2 taken along line AA with the center bolt fully seated within the camshaft adjuster.
  • a camshaft adjuster 100 of the present invention has a stator 3 and a rotor 2 connected to the camshaft 7 in a rotationally fixed manner, wherein the stator 3 is driven by a crankshaft of an internal combustion engine which is not shown.
  • a plurality of working chambers are arranged between the stator 3 and the rotor 2, the working chambers being formed by radially inwardly projecting projections of the stator 3 which are supported on the radially inner diameter of the rotor 2.
  • the working chambers are respectively divided into two working chambers by means of flaps (which may be formed separately or integrally formed) provided in the rotor 2, in which a pressure medium is applied, so that the rotor 2 can be changed relative to the stator 3.
  • the relative rotational position of the camshaft can also change the relative rotational position of the camshaft relative to the crankshaft.
  • the front and rear sides of the stator 3 are respectively provided with a front cover 1 and a rear cover 4, and the front cover 1, the stator 3 and the rear cover 4 can be joined together by a plurality of bolts 8.
  • the rotor 2 is housed inside the stator 3.
  • a spiral compression spring 5 is attached to one side of the rotor 2.
  • the compression spring 5 is mounted in the axial direction of the rotor 2 and has a certain length in the axial direction.
  • the first end of the compression spring 5 is hooked on the front cover 1, and the opposite second end is hooked on the rotor 2. Since the front cover 1 and the stator 3 are coupled together, the compression spring 5 can hold the rotor 2 and the stator 3.
  • a torsionally connected connection It should be noted that the first end of the compression spring 5 is hooked on the outside of the front cover 1, so that the front cover 1 does not need to be provided with a fixing mechanism to fix the first end of the compression spring 5.
  • the front cover 1 does not increase the size of the entire camshaft adjuster 100 in the axial direction.
  • One end of the cam shaft 7 abuts against the rotor 2, and a cam hole 71 for receiving the center bolt 6 is provided inside the cam shaft 7, wherein the center bolt 6 can fix the camshaft adjuster 100 to the cam shaft 7.
  • the center bolt 6 includes an elongated main body portion 61, a head portion 63, and a guiding portion 62 that connects the main body portion 61 and the head portion 63.
  • the surface of the guiding portion 62 has a certain slope, and the size of the guiding portion 62 near the side of the head portion 63 is larger than the size of the side close to the main body portion 61.
  • the outer surface of the main body portion 61 is provided with a plurality of external threads (not shown) which are engaged with the internal threads (not shown) inside the cam shaft 7 to fix the central bolt 6 It is positioned inside the camshaft 7. As shown in FIGS. 3 and 4, the center bolt 6 is inserted into the camshaft adjuster 100 inwardly from the opening 11 provided in the center of the front cover 1.
  • the main body portion 61 first enters the shaft hole 71 of the cam shaft 7, and as the main body portion 61 deepens, the guiding portion 62 will move to the inside of the compression spring 5, and if so, the compression spring 5 has a certain inclination, the guiding portion The surface of the 62 will push the inside of the compression spring 5 until the head 63 is supported inside the compression spring 5. Due to the presence of the guide portion 62, even if the compression spring 5 has a certain inclination, the center bolt 6 can be normally mounted and the guide portion 62 can guide the compression spring 5 to the exact position.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

一种具有中央螺栓（6）的凸轮轴调节器（100），包括定子（3）和抗扭地与凸轮轴（7）连接的转子（2），转子（2）收容于定子（3）内部并且在转子（2）和定子（3）之间形成若干工作腔。一个前盖（1）和一个后盖（4）分别位于定子（3）的前后两侧并且通过若干螺栓（8）与定子（3）结合在一起。一个压缩弹簧（5）的第一端卡扣于前盖（1）的外部，第二端固定于转子（2）上。一个中央螺栓（6）自前盖（1）上设置的开口安装入凸轮轴调节器（100）的内部，该中央螺栓（6）设有一个能够推动压缩弹簧（5）到准确位置的导引部（62），从而无需在凸轮轴调节器内部设置支撑压缩弹簧的支撑装置，因而有利于优化凸轮轴调节器的结构并且降低生产成本。

Description

一种具有中央螺栓的凸轮轴调节器 本申请要求 2012 年 12 月 25 日提交中国专利局、 申请号为 201210572711.7、发明名称为 "一种具有中央螺栓的凸轮轴调节器"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。 技术领域 本发明涉及内燃机技术领域，尤其涉及一种应用于内燃机技术领 域的具有中央螺栓的凸轮轴调节器。 背景技术 在具有机械式阀控制机构的内燃机中，换气阀被由曲轴驱动的凸 轮轴的凸轮所控制， 其中， 针对曲轴与凸轮轴之间的确定的相位， 通 过凸轮的布置和形状可以确定阀的配气相位。根据内燃机的当前运行 工况，可以通过改变曲轴与凸轮轴之间的相位来对阀的配气相位产生 影响， 由此可以实现有利的效果， 比如减少燃油消耗和有害物质的产 生。这种自由选择地调整曲轴与凸轮轴之间的相位的装置即凸轮轴调 节器。 中国专利申请 201010212448.1 号揭示了一种凸轮轴调节器， 其 包括与曲轴传动相连的外转子或者说是定子、同心地设置在定子的中 空腔中的内转子或者说是转子、 前盖、 后盖、 弹簧及若干固定螺栓。 前盖、后盖分别位于定子的两侧， 所述固定螺栓穿过定子从而将前盖 和后盖结合在一起。 弹簧的一端固定在前盖上， 另一端则固定在转子 上， 这样可以让转子和定子之间抗扭地连接。 由于弹簧为压缩弹簧并 且在轴向上具有一定的长度， 若没有支撑， 弹簧可能会在转子内部倾 斜， 这将会影响转子向凸轮轴上固定时中央螺栓的安装。 因此， 在本 专利揭示的凸轮轴调节器中，前盖向内突伸形成一个环状的支撑装置 以支撑弹簧的前端， 这样可以有效防止弹簧的倾斜。 美国专利公告 6,450,137 号同样揭示了一种类似的凸轮轴调节 器， 它也是通过在前盖设置支撑装置来防止弹簧的倾斜。 当然， 也可 以设置其他单独形成的支撑装置来实现弹簧的支撑。但是， 由于在前 盖上设置支撑装置会造成前盖尺寸的增加并且增加额外的制造成本， 此外，单独形成的支撑装置也会增加凸轮轴调节器组装的复杂性并且 增加制造成本。 因此， 需要提供一种改进的凸轮轴调节器以解决上述问题。 发明内容 本发明解决的问题是提供一种具有中央螺栓的结构筒单的凸轮 轴调节器。 为解决上述问题， 本发明采用如下技术方案： 一种具有中央螺栓 的凸轮轴调节器， 其包括定子和抗扭地与凸轮轴连接的转子， 所述转 子收容于所述定子内部并且在转子和定子之间形成若干工作腔，一个 前盖和一个后盖分别位于所述定子的前后两侧并且通过若干螺栓与 所述定子结合在一起，一个压缩弹簧的第一端卡扣于所述前盖的外部 而该压缩弹簧的第二端固定于所述转子上，一个中央螺栓自所述前盖 上设置的开口安装入所述凸轮轴调节器的内部，所述中央螺栓设有一 个能够推动所述压缩弹簧到准确位置的导引部。 与现有技术相比， 本发明具有以下优点： 中央螺栓的导引部可以 推动所述压缩弹簧到准确位置，这样就不需要在凸轮轴调节器内部设 置支撑压缩弹簧的支撑装置，因而有利于优化凸轮轴调节器的结构并 且降低生产成本。 附图说明 图 1是本发明的凸轮轴调节器的立体图； 图 2是图 1所示的凸轮轴调节器的前视图； 图 3是图 2所示的凸轮轴调节器沿 A-A线的剖视图， 其中中央 螺栓部分安装入凸轮轴调节器内； 图 4是图 2所示的凸轮轴调节器沿 A-A线的剖视图， 其中中央 螺栓完全安装入凸轮轴调节器内。 具体实施方式 由图 1至图 3所示，本发明的凸轮轴调节器 100具有定子 3和抗 扭地与凸轮轴 7连接的转子 2, 其中定子 3由未显示出的内燃机的曲 轴来驱动。 在定子 3和转子 2之间布置有多个工作腔， 工作腔通过定 子 3的径向向内突出的凸起部形成，这些凸起部支撑在转子 2的径向 内部直径上。 工作腔通过设置于转子 2的翼板（可以是单独形成的也 可以是一体形成的）分别被划分成两个工作腔， 这些工作腔内被施加 压力介质， 从而可以改变转子 2相对于定子 3的相对转动位置， 同时 也可以改变凸轮轴相对于曲轴的相对转动位置。 定子 3的前后两侧分别设置有前盖 1和后盖 4, 通过若干螺栓 8 可以将前盖 1、 定子 3和后盖 4结合在一起。 转子 2收容于定子 3的 内部， 为了保持定子 3和转子 2之间的抗扭地连接， 转子 2的一侧安 装有一个螺旋状压缩弹簧 5。 压缩弹簧 5沿转子 2的轴向方向安装， 并且在轴向上具有一定的长度。压缩弹簧 5的第一端勾扣于前盖 1上， 而相对的第二端则勾扣于转子 2上，由于前盖 1与定子 3结合在一起， 压缩弹簧 5可以保持转子 2与定子 3之间的抗扭连接。需要指出的是， 压缩弹簧 5的第一端勾扣于前盖 1的外部， 因此前盖 1并不需要设置 固定机构来固定压缩弹簧 5的第一端。 这样， 前盖 1就不会在轴向上 增加整个凸轮轴调节器 100的尺寸。 凸轮轴 7的一端抵靠于转子 2, 并且凸轮轴 7内部设有用以收容 中央螺栓 6的轴孔 71 , 其中， 中央螺栓 6可以将凸轮轴调节器 100 固定至凸轮轴 7上。 中央螺栓 6包括细长的主体部 61、 头部 63及连 接主体部 61和头部 63的导引部 62。 导引部 62的表面具有一定的坡 度， 并且导引部 62靠近头部 63—侧的尺寸大于靠近主体部 61—侧 的尺寸。 主体部 61的外表面上设有若干外螺纹（未图示）， 这些外螺 纹与凸轮轴 7内部的内螺纹（未图示）相互咬合从而将中央螺栓 6固 定在凸轮轴 7内。 如图 3和图 4所示， 中央螺栓 6自前盖 1中央设置的开口 11向 内插入凸轮轴调节器 100内。 主体部 61首先进入凸轮轴 7的轴孔 71 内， 随着主体部 61的进一步深入， 导引部 62将移动至压缩弹簧 5的 内部， 假如此时压缩弹簧 5有一定的倾斜， 导引部 62的表面将推动 压缩弹簧 5的内部直到头部 63支撑于压缩弹簧 5的内部。 由于导引 部 62的存在， 即使压缩弹簧 5有一定的倾斜， 中央螺栓 6也可以正 常安装并且导引部 62能够将压缩弹簧 5导引恢复到准确位置。这样， 就不需要在凸轮轴调节器 100内部设置支撑压缩弹簧 5的支撑装置， 因而有利于优化凸轮轴调节器 100的结构并且降低生产成本。 虽然本发明仅就某些示范性实施方式进行描述，这些描述应该仅 作为示例而不构成限制。 在所附权利要求书记载的范围内， 在不脱离 本发明精神和范围情况下， 各种变化均是可能的。

Claims

权 利 要 求
1. 一种具有中央螺栓的凸轮轴调节器， 其包括定子和抗扭地与凸轮 轴连接的转子， 所述转子收容于所述定子内部并且在转子和定子 之间形成若干工作腔， 一个前盖和一个后盖分别位于所述定子的 前后两侧并且通过若干螺栓与所述定子结合在一起， 一个压缩弹 簧的第一端卡扣于所述前盖的外部而该压缩弹簧的第二端固定于 所述转子上， 一个中央螺栓自所述前盖上设置的开口安装入所述 凸轮轴调节器的内部， 其特征在于： 所述中央螺栓设有一个能够 推动所述压缩弹簧到准确位置的导引部。
2. 如权利要求 1所述的具有中央螺栓的凸轮轴调节器， 其特征在于： 所述中央螺栓包括头部和细长的主体部， 所述导引部连接所述头 部和主体部， 所述中央螺栓完全安装入凸轮轴调节器内时， 所述 头部支撑所述压缩弹簧。
3. 如权利要求 2所述的具有中央螺栓的凸轮轴调节器， 其特征在于： 所述导引部的表面具有一定坡度， 并且该导引部靠近头部一侧的 尺寸大于靠近主体部一侧的尺寸。
4. 如权利要求 1至 3中任一项所述的具有中央螺栓的凸轮轴调节器， 其特征在于： 与转子连接的凸轮轴设有轴孔， 该轴孔与所述前盖 的开口对应以让所述中央螺栓安装。
PCT/CN2013/089950 2012-12-25 2013-12-19 一种具有中央螺栓的凸轮轴调节器 WO2014101709A1 (zh)

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DE102017111110A1 (de) 2017-05-22 2018-11-22 Schaeffler Technologies AG & Co. KG Nockenwellenversteller mit einem Kettenrad und einem damit kraft- und/oder formschlüssig verbundenen Stator
CN109124200B (zh) * 2018-11-08 2024-02-09 广西玉柴机器股份有限公司 一种机体固定及展示装置
CN114151157B (zh) * 2021-11-26 2024-04-26 中国北方发动机研究所(天津) 一种凸轮轴辅助支撑结构

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DE102004060176A1 (de) * 2003-12-15 2005-07-14 Denso Corp., Kariya Variable Ventilzeitsteuerung
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DE112013006206T5 (de) 2015-09-10

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