WO2011137747A1 - 密封气体的活塞环和活塞 - Google Patents

密封气体的活塞环和活塞 Download PDF

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Publication number
WO2011137747A1
WO2011137747A1 PCT/CN2011/073693 CN2011073693W WO2011137747A1 WO 2011137747 A1 WO2011137747 A1 WO 2011137747A1 CN 2011073693 W CN2011073693 W CN 2011073693W WO 2011137747 A1 WO2011137747 A1 WO 2011137747A1
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Prior art keywords
ring
piston
teeth
gas
tooth
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PCT/CN2011/073693
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English (en)
French (fr)
Inventor
李向东
Original Assignee
王胜
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Publication of WO2011137747A1 publication Critical patent/WO2011137747A1/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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
    • F16J9/12—Details
    • F16J9/14—Joint-closures

Definitions

  • the present invention is in the technical field of pistons moving in a cylinder, and more particularly to a piston ring for sealing a gas and a piston with a piston ring of such a sealing gas.
  • the piston ring of the sealing gas has a linear slit.
  • the piston ring of the sealing gas can be elastically changed to seal with the inner wall of the elastic cylinder to prevent the gas in the cylinder from being trapped.
  • the piston ring of the sealing gas changes elastically, so that the linear slit becomes larger or smaller, so that the gas in the cylinder passes through the straight slit, that is, the piston ring helium is not tightly sealed. Therefore, in the intake stroke, compression stroke, power stroke, and exhaust stroke, helium is wasted, so fuel is wasted and power is reduced.
  • the present invention has two purposes. The first one is to provide a piston ring that is elastically variable in size, is used in a piston without helium gas, or has a gas amount far less than that of a prior art sealing gas; The piston is provided with a piston ring that does not contain helium or a helium gas that is much less than the sealing gas of the prior art.
  • the idea of the invention is to set the slit of the piston ring into a "Z" shaped slit, so that the solid ring is combined with the tooth shape of the inner tooth and the outer tooth, as long as the curved side wall between the inner tooth and the outer tooth is maintained There is no gap between them.
  • the curved side wall between the internal tooth and the external tooth slides, the inner and outer gaps between the internal tooth and the external tooth are not connected, and the gas in the cylinder cannot pass through the piston ring. Avoid suffocation.
  • helium is generated, it is also a process defect that belongs to the curved side wall between the inner tooth and the outer tooth, or a defect in the cooperation process between the piston ring and the inner wall of the cylinder.
  • the structure of the present invention is:
  • An inner and outer toothed piston ring of a sealing gas comprising a physical ring 2 having a slit, the slit cutting the solid ring 2 into an unclosed annular body having a broken opening, having a radius of a center radius of the solid ring 2,
  • the cross section is preferably a rectangle, and may be square or elliptical, or circular.
  • the solid ring 2 has an annular surface 3 having the same shape and size on the upper and lower sides, and the inner side wall 4 between the inner rings of the upper and lower annular surfaces 3, and the upper and lower annular surfaces: the outer side wall between the outer rings of 3 5, characterized in that the incision between the upper and lower annular surfaces 3 is a "Z" shaped slit 6, so that the solid ring 2 is formed into a tooth shape of the inner tooth 7 and the outer tooth 8; the inner surface of the inner tooth 7 is In the portion of the inner side wall 4, the outer surface of the outer teeth 8 is a part of the outer side wall 5, and the inner teeth 7 and the outer teeth 8 are formed in a sealed inner and outer layers.
  • the sum of the widths of the inner teeth 7 and the outer teeth 8 is equal to the width of the annular surface 3; that is, any portion of the solid ring 2 is equal at the width of the radius line, and the inner teeth 7 and the outer teeth 8 are
  • the inner and outer layers are stacked, which is a stacked structure without gaps.
  • the arcuate side walls 9 of the inner teeth 7 and the outer teeth 8 have the same arc shape, and the arcuate side walls 9 of the inner teeth 7 and the outer teeth 8 have the same center and the inner side wall 4 and the outer side wall 5 . Therefore, when the elastic ring 2 is elastically opened or contracted, the internal teeth 7 and
  • the curved side walls 9 of the outer teeth 8 are smoothly slid with the arcuate trajectory of one radius, and no gap is formed between the inner teeth 7 and the curved side walls 9 of the outer teeth 8.
  • the tooth top surface 10 of the internal tooth 7 and the tooth bottom surface 1 1 of the external tooth 8 are elastically opened in the elastic ring 2 to generate an internal gap, and the tooth top surface 0 of the external tooth 8 and the tooth bottom surface 1 1 of the internal tooth 7 are in the physical ring. 2
  • the elastic opening creates an outer gap, and the inner gap and the outer gap have no gas passage, that is, the inner gap and the outer gap are sealed by the completely closed inner gingival and the curved side wall 9 of the outer teeth 8, so that the elastic ring 2 is elastically opened. Only two gaps are formed between the inner gap and the outer gap, and the two non-intersecting gaps do not cause the piston ring to generate helium. '
  • the top surface 10 of the internal tooth 7 has the same shape and size as the tooth bottom surface U of the external tooth 8, and the tooth top surface 10 of the external tooth 8 has the same shape and size as the tooth bottom surface 11 of the internal tooth 7.
  • Such a structure is advantageous in that the inner and outer gaps are minimized in the elastic contraction state of the solid ring 2, further reducing the probability of helium.
  • the arcuate side walls 9 of the inner teeth 7 and the outer teeth 8 have the same arc length. That is, the inner teeth 7 and the outer teeth 8 are long, so that the structure is favorable for the inner and outer gaps to be equal when the elastic ring 2 is elastically contracted, and the inner and outer gaps are the smallest, further reducing the probability of helium. .
  • the top surface 10 of the tooth is curved, and the bottom surface 11 of the tooth is an arc having the same shape and size.
  • the top surface 10 has no sharp corners, and when the elastic ring 2 is elastically opened or contracted, the inner teeth 7 and the outer teeth 8 are less likely to scratch the opposite curved side walls 9. It is also not easy to scratch the inner wall of the cylinder, and it is not easy to scratch the piston body.
  • the width of the outer teeth 8 is larger than the width of the inner teeth 7.
  • the width of the outer teeth 8 is greater than the excess width of the width of the inner teeth 7, for the reserved width of the piston ring losses.
  • the piston of the inner and outer toothed piston ring with the above-mentioned sealing gas includes a cylindrical piston body 21 having a gas ring groove 22 on the surface thereof, and the gas ring groove 22 is perpendicular to the center line of the piston body 21. It is characterized in that an inner and outer toothed piston ring 23 for sealing gas is embedded in the gas ring groove 22. In the gas ring groove 22, one or more inner and outer toothed piston rings 23 can be embedded in the sealing gas, '
  • the surface of the piston body 21 should also have an oil ring groove, and the oil ring groove should be embedded with an oil seal ring.
  • the present invention does not involve an oil seal ring and will not be discussed herein.
  • the inner and outer toothed piston rings 23 of the outer and outer diameters of the sealing gas are laminated in the gas ring groove 22.
  • the inner teeth 7 of the inner and outer toothed piston rings 23 of a certain sealing gas and the curved side walls 9 of the outer teeth 8 are prevented from being helium, and may be blocked by the solid portion of the inner and outer toothed piston rings 23 of the other sealing gas. Gas of gas.
  • a preferred angular difference is 180°, that is, an angle between the top surfaces 10 of the two internal teeth 7 of the inner and outer toothed piston rings 23 of the two sealing gases stacked one above another is 1.80 °. ⁇ .
  • the advantage of the piston with the inner and outer toothed piston rings of the sealing gas is that the inner and outer toothed piston rings of the sealing gas of the invention are embedded in the gas ring groove of the piston, so that the sealing performance of the piston to the gas is better than the present Some pistons.
  • the inner and outer toothed piston rings of the sealing gas of the present invention are embedded in a gas ring groove of the piston, even if a "Z" shaped slit of the piston ring has a small amount of helium gas, it is also replaced by another piston ring.
  • the solid part is sealed so that the gas on the upper and lower sides of the piston ring cannot communicate.
  • FIG. 1 is a schematic structural view of a sealing gas piston ring of a conventional straight slit
  • FIG. 2 is a schematic view showing the structure of an inner and outer toothed piston ring of a sealing gas having a "Z"-shaped slit on the upper and lower surfaces of the present invention
  • FIG. 3 is a schematic view showing the structure of a piston of an inner and outer toothed piston ring of the present invention with a sealing gas having a "Z" shaped upper and lower surface;
  • 2 is a solid ring
  • 3 is an annular surface
  • 4 is an inner side wall
  • 5 is an outer side wall
  • 6 is a "Z" shaped slit
  • 7 is an internal tooth
  • 8 is an external tooth
  • 9 is a curved side wall.
  • 10 is a tooth top surface
  • 11 is a tooth bottom surface
  • 21 is a piston body
  • 22 is a gas ring groove
  • 23 is an inner and outer toothed piston ring that seals gas.
  • Embodiment 1 Internal and external toothed piston ring of sealing gas.
  • a solid ring 2 including a slit is formed, and the slit cuts the solid ring 2 into an unclosed annular body having a broken mouth, and has a radius of a center radius of the solid ring 2, and has a rectangular cross section.
  • the upper and lower sides of the solid ring 2 are annular surfaces 3 of the same shape and size, and the inner side walls 4 are between the inner rings of the upper and lower annular surfaces 3, and the outer side walls 5 between the outer rings of the upper and lower annular surfaces 3 .
  • the slits communicating between the upper and lower annular surfaces 3 are "Z" shaped slits 6, and the "Z" shaped slits 6 are perpendicular to the annular surface 3;
  • the solid ring 2 is formed as teeth of the inner teeth 7 and the outer teeth 8
  • the inner joint surface of the inner teeth 7 is a part of the inner side wall 4, and the outer surface of the outer teeth 8 is a part of the outer side wall 5.
  • the inner teeth 7 and the outer teeth 8 are sealed in a sealed manner inside and outside.
  • the sum of the widths of the inner teeth 7 and the outer teeth 8 is equal to the width of the annular surface 3; that is, any portion of the solid ring 2 is equal at the width of the radius line, the inner and outer teeth 8
  • the inner and outer layers are stacked, which is a stacked structure without gaps.
  • the arcuate side walls 9 of the inner teeth 7 and the outer teeth 8 have the same arc shape, and the arcuate side walls 9 of the inner teeth 7 and the outer teeth 8 have the same center and the inner side wall 4 and the outer side wall 5 . Therefore, when the elastic ring 2 is elastically opened or contracted, the curved side walls 9 of the inner teeth 7 and the outer teeth 8 are smoothly slid along the curved path of the same radius, and the curved sides of the inner teeth 7 and the outer teeth 8 No gaps are created between the walls 9.
  • the tooth top surface 10 of the internal tooth 7 and the tooth bottom surface 11 of the external tooth 8 are elastically opened in the elastic ring 2 to create an internal gap, and the tooth top surface 10 of the external tooth 8 and the tooth bottom surface 11 of the internal tooth 7 are elastic in the solid ring 2
  • the opening creates an outer gap, and the inner gap and the outer gap have no gas passage, that is, the inner gap and the outer gap are completely closed by the inner teeth 7 and the curved side walls 9 of the outer teeth 8, so that when the elastic ring 2 is elastically opened, only the opening is generated.
  • There are two gaps between the inner gap and the outer gap, and the two non-intersecting gaps do not cause the piston ring to generate helium.
  • the top surface K) of the internal tooth 7 is the same shape and size as the tooth bottom surface 11 of the external tooth 8, and the tooth top surface K) of the external tooth 8 is the same as the shape and size of the tooth bottom surface 1 1 of the internal tooth 7.
  • Such a structure facilitates the minimum of the inner and outer gaps in the elastic contraction state of the solid ring 2, further reducing the probability of helium.
  • Embodiment 2 The inner and outer toothed piston rings of the sealing gas having the same arc length of the curved side walls of the inner and outer teeth
  • Embodiment 1 The entire structure of Embodiment 1 is such that the arc lengths of the curved side walls 9 of the internal teeth 7 and the external teeth 8 are equal. That is, the inner teeth 7 and the outer teeth 8 are long, so that the structure is favorable for the inner and outer gaps to be equal when the elastic ring 2 is in the elastic contraction state, and the inner and outer gaps are the smallest, further reducing the probability of the helium gas.
  • Embodiment 3 the top surface of the tooth and the bottom surface of the tooth are internal and external toothed piston rings of a sealing gas having the same shape and size.
  • the top surface 1() has no sharp corners, and when the elastic ring 2 is elastically opened or contracted, the inner teeth 7 and the outer teeth 8 are less likely to scratch the opposite curved side walls 9. It is also not easy to scratch the inner wall of the cylinder, and it is not easy to scratch the outer ring of the piston ring 21 gas ring groove 22 .
  • Embodiment 4 Inner and outer toothed piston rings of sealing gas having an outer tooth width larger than an inner tooth width
  • Embodiment 3 The entire structure of Embodiment 3, but the width of the external teeth 8 is larger than the width of the internal teeth 7.
  • the piston reciprocates in the cylinder, the piston ring and the inner wall of the cylinder are continuously rubbed, and the piston ring and the inner wall of the cylinder are depleted.
  • the elastic opening of the solid ring 2 can fill the loss.
  • the width of the outer teeth 8 is greater than the excess width of the width of the inner teeth 7, for the reserved width of the piston ring losses.
  • Embodiment 2 3, the entire structure of Embodiment 1, but further including a cylindrical piston body 21 having a gas ring groove 22 on the surface thereof, and the gas ring groove 22 is perpendicular to the center line of the piston body 21.
  • An inner and outer toothed piston ring 23 for sealing the gas is embedded in the gas ring groove 22.
  • one or more inner and outer toothed piston rings 23 of the sealing gas may be embedded.
  • Embodiment 6 preferably ⁇ piston with inner and outer toothed piston ring with sealing gas
  • Embodiment 4 The entire structure of Embodiment 4, but also including a cylindrical piston body 21 having a gas ring groove on the surface of the piston body 21
  • the gas ring groove 22 is perpendicular to the central column line of the piston body 21, and the inner and outer toothed piston rings of the gas ring groove 22 are embedded with a sealing gas.
  • one or more inner and outer toothed piston rings 23 of the sealing gas may be embedded.
  • the gas ring groove 22 is embedded with two inner and outer tooth type ffi plug rings 23 of upper and lower outer sealing gas having equal sealing gas.
  • the inner teeth 7 of the inner and outer toothed piston rings 23 of one of the sealing gases and the curved side walls 9 of the outer teeth 8 are prevented from being helium, and the solid portion of the inner and outer toothed piston rings 23 of the other sealing gas may be blocked by the helium gas. gas.
  • the center of the inner and outer toothed piston rings 23 of the two sealing gases is centered, and the angle between the tooth top surfaces 10 of the two inner teeth 7 of the inner and outer toothed piston rings 23 of the two sealing gases stacked one above the other
  • the angle between the top surfaces 10 of the two internal teeth 7 of the inner and outer toothed piston rings 23 of the two sealing gases stacked one above the other is 180°.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Compressor (AREA)

Description

说 明 书 密封气体的活塞环和活塞 技术领域
[0001 ] 本发明属于在缸体中运动的活塞的技术领域,特别是涉及密封气体的活塞环和带 有这种密封气体的活塞环的活塞。 背景技术
[0002] 现在密封气体的活塞环有一个直线形的切口，密封气体的活塞环变形时，密封气 体的活塞环能弹性变化大小，起到与弹性缸体内壁密封，防止缸体内的气体在密封气体的 活塞环两边流动的作用。但密封气体的活塞环弹性变化，使直线形切口的变大或变小，从而 使缸体内的气体从直线形切口穿过，即产生密封不严的活塞环窜气作用。因而在吸气冲程、 压缩冲程、做功冲程、排气冲程中都会窜气，故浪费燃料，降低功率，且最大的问题是使用时 间越长，间隙越大，窜气更加严重，浪费燃料越多，功率越来越小，出现烧机油，污染环境等。 活塞环窜气使发动机的输出功率受损失。 发明内容
[0003] 本发明有两个目的，第一个是提供即能弹性变化大小，用在活塞中又不会窜气，或 窜气量远远少于现有结构的密封气体的活塞环；第二个是提供带有这种不会窜气，或窜气 量远远少于现有结构的密封气体的活塞环的活塞。
[0004] 本发明的构思是：把活塞环的切口设置成" Z"字型切口，使实体环成内齿和外齿 的齿形结合，只要保持内齿和外齿之间弧形侧壁之间没有间隙，当内齿和外齿之间弧形侧 壁滑动移位时，内齿和外齿之间的内外间隙不相通,缸体内的气体就不能穿过活塞环,从结 构上避免了窜气。如果有窜气产生，也是属于内齿和外齿之间弧形侧壁的工艺上有缺陷，或 活塞环与缸体内壁的配合工艺上有缺陷造成。
[0005] 本发明的结构是：
[0006] 密封气体的内外齿式活塞环，包括有一个切口的实体环 2，切口把实体环 2切成有 一个断开口的不封闭的环形实体，以实体环 2中心的半径作截面，截面为长方形为佳，也可 以是正方形或椭圆形，或圆形。 _
[0007] 实体环 2有上下两面为形状和大小相同的环形表面 3，上下两个环形表面 3的内环 之间是内侧壁 4，上下两个环形表面: 3的外环之间是外侧壁 5，其特征在于：上下两个环形表 面 3之间相通的切口为" Z "字型切口 6,使实体环 2成内齿 7和外齿 8的齿形结合；内齿 7 的内表面是内侧壁 4的 -········部分，外齿 8的外表面是外侧壁 5的一部分，内齿 7和外齿 8成内 外两层密封相叠的结构。
[0008] 在环形表面 3,内齿 7和外齿 8的宽度之和等于环形表面 3的宽度；也就是实体环 2任何部位在半径线上的宽度处处相等，内齿 7和外齿 8成内外相叠，是没有缝隙的相叠结 构。
[0009] 内齿 7和外齿 8的弧形侧壁 9的弧形相同，并且内齿 7和外齿 8的弧形侧壁 9的 弧形与内侧壁 4和外侧壁 5是同一个圆心。所以，实体环 2弹性的张开或收缩时，内齿 7和
替换页 (细则第 26条) 外齿 8的弧形侧壁 9都缘同一个半径的弧形轨迹平滑的滑动，内齿 7和外齿 8的弧形侧壁 9 之间不产生间隙。 内齿 7的齿顶面 10与外齿 8的齿底面 1 1在实体环 2弹性的张开产生内 间隙，外齿 8的齿顶面 ] 0与内齿 7的齿底面 1 1在实体环 2弹性的张开产生外间隙，内间隙 与外间隙没有气体通道，即内间隙与外间隙被完全闭合的内齿 Ί和外齿 8的弧形侧壁 9密 封，使实体环 2弹性的张开时，只产生内间隙与外间隙两个不相通的间隙，两个不相通的间 隙不会使活塞环产生窜气。 '
[0010] 内齿 7的齿顶面 10与外齿 8的齿底面 U的形状和大小相同，外齿 8的齿顶面 10 与内齿 7的齿底面 11的形状和大小相同。这样结构有利于在实体环 2弹性的收缩状态时， 内间隙和外间隙最小，进一步减小窜气的概率。
[001 1 ] 内齿 7和外齿 8的弧形侧壁 9的弧长相等。 也就是内齿 7和外齿 8—样长，这样 结构有利于在实体环 2弹性的收缩状态说时，内间隙和外间隙相等，且内间隙和外间隙最小， 进一步减小窜气的概率。
[0012] 齿顶面 10为弧形，齿底面 11为形状和大小相同的弧形。 这样齿顶面 10无尖角， 在实体环 2弹性的张开或收缩时，内齿 7和外齿 8书不易划伤对面的弧形侧壁 9。也不易划伤 缸体内壁，和不易划伤活塞体 1气环槽 22外璧。
[001 3] 外齿 8的宽度大于内齿 7的宽度。 活塞在缸体内往复运动时，活塞环与缸体内壁 不断磨擦，活塞环和缸体内壁都会有损耗,实体环 2弹性的张开可填补损耗。外齿 8的宽度 大于内齿 7的宽度的多余宽度，用于活塞环损耗的预留宽度。
[0014] 带有上述某 种密封气体的内外齿式活塞环的活塞，包括圆柱形的活塞体 21，活 塞体 21表面有气环槽 22，气环槽 22与活塞体 21的中心柱线垂直，其特征在于：气环槽 22 中嵌有密封气体的内外齿式活塞环 23。在气环槽 22中，可嵌入一个或多个密封气体的内外 齿式活塞环 23 ,, '
[0015] 当然，活塞体 21表面还应有油环槽，油环槽应嵌入有油密封环，本发明不涉及油 密封环,在此不讨论。
C0016] 优选气环槽 22中嵌有上下层叠的两个外直径相等的密封气体的内外齿式活塞环 23。 防止某- ·个密封气体的内外齿式活塞环 23的内齿 7和外齿 8的弧形侧壁 9有窜气，还 可用另一个密封气体的内外齿式活塞环 23的实体部分阻塞窜气的气体。
[001 7] 上下层叠的两个密封气体的内外齿式活塞环 23的两个 " Z "字型切口 6不相重合。 一个密封气体的内外齿式活塞环 23有窜气，用另一个密封气体的内外齿式活塞环 23窜气 的两环位置关是：两个活塞环的" Z "字型切口 6不相重合。
[001 8] 以两个密封气体的内外齿式活塞环 23的中心为圆心，上下层叠的两个密封气体 的内外齿式活塞环 23的两个内齿 7的齿顶面 10之间的夹角为 5 a -180° 。两个活塞环的 " Z "字型切口 6不相重合，则两个活塞环的 " Z "字型切口 6有角度差，其角度差为两个内齿 7的齿顶面 10之间的夹角为 5° -180° 。
[0019] 优选的角度差为 180° ，即上下层叠的两个密封气体的内外齿式活塞环 23的两个 内齿 7的齿顶面 10之间的夹角为 1.80 ° 。 ■ .
[0020] 带有密封气体的内外齿式活塞环的活塞的密封气体工作原理：
[0021 ] 首先，在吸气冲程中，活塞向下运动，气环槽的上沿紧压在活塞环的上沿，使活塞 环向下运动，这时两道气环与活塞槽的上沿三者紧密结合在一起,切断牙箱内的空气上窜，
替换页 (细则笫 26条) 说 明 书
同时错口又隔绝空气的横向流动。 保证吸入的全是可燃混合气。
[0022] 然后，在压缩冲程，做功冲程和排气冲程中，由于气缸内的高压以及活塞的运动方 向，迫使两道气环紧贴在一起，同时两道气环紧压在活塞槽的下沿，切断高温髙压的燃气下 窜，同时错口又切断高温高压的燃气横向冲出气缸。从而达到节约燃料，增大功率延长活塞 活塞环的使用寿命的作用。
[0023] 本发明的优点：
[0024] 密封气体的内外齿式活塞环的优点：当活塞环在温度较低时收缩，内齿 7和外齿 8 的齿顶面 10与齿底面 11之间产生间隙，即产生内间隙和外间隙，内间隙和外间隙是内齿 7 和外齿 8的弧形侧壁 9，但内齿 7和外齿 8的弧形侧壁 9紧密叠合的，没有间隙,则内间隙和 外间隙之间不相通，导致活塞环内侧壁 4和外侧壁 5之间的气体不相通，在活塞环外侧壁 5 与缸体内侧壁密封良好的条件下，活塞环内侧壁 4和外侧壁 5之间的气体不能经过活塞环 收縮产生的间隙窜气。 解决了现在活塞环收缩间隙必然窜气的问题。
[0025] 带有密封气体的内外齿式活塞环的活塞的优点：把本发明的密封气体的内外齿式 活塞环嵌在活塞的气环槽后，使其活塞对气体的密封性能优于现有的活塞。 特别是用两个 本发明的密封气体的内外齿式活塞环嵌在活塞的一个气环槽后，即便有一个活塞环的" Z" 字型切口有少量窜气，也被另一个活塞环的实体部分密封，使活塞环上下两边的气体不能 相通。 使用本发明的活塞后，对发动机的有益效果如下：
[0026] 1、节约燃料，杜绝燃料的浪费。
[0027] 2、增大功率。
C0028] 3、延长活塞和活塞环的使用寿命，且在发动机整个工作过程中，密封性能不随着 机械磨损而降低密封性能。
[0029] 4、密封性能优于现有密封技术，断绝窜气。
[0030] 5、防止机油及零件受废气腐蚀，延长机油和内燃机的使用寿命。
[0031 ] 6、能有效防止烧机油现象。 附图说明
[0032] 图 1是现有直形切口的密封气体活塞环的结构示意图；
[0033] 图 2是本发明上下表面为 "Z"字型切口的密封气体的内外齿式活塞环结构示意 图；
[0034] 图 3是本发明带有上下表面为" Z "字型切口的密封气体的内外齿式活塞环的活塞 结构示意图；
[0035] 图中 2是实体环、 3是环形表面、 4是内侧壁、 5是外侧壁、 6是" Z"字型切口、 7是内 齿、 8是外齿、 9是弧形侧壁、 10是齿顶面、 11是齿底面、 21是活塞体、 22是气环槽、 23是密封 气体的内外齿式活塞环。 具体实施方式
[0036] 实施例 1、密封气体的内外齿式活塞环.
[0037] 如图 2，包括有一个切口的实体环 2，切口把实体环 2切成有一个断幵口的不封闭 的环形实体，以实体环 2中心的半径作截面，截面为长方形。
替换页 (细则第 26条) 说 明 书
[0038] 实体环 2的上下两面为形状和大小相同的环形表面 3,上下两个环形表面 3的内环 之间是内侧壁 4,上下两个环形表面 3的外环之间是外侧壁 5。上下两个环形表面 3之间相 通的切口为" Z "字型切口 6， " Z "字型切口 6与环形表面 3垂直；使实体环 2成内齿 7和外 齿 8两个齿的齿形结合结构；内齿 7的内表面是内侧壁 4的一部分，外齿 8的外表面是外侧 壁 5的一部分，内齿 7和外齿 8成内外密封相叠的结构。
[0039] 在环形表面 3，内齿 7和外齿 8的宽度之和等于环形表面 3的宽度；也就是实体环 2任何部位在半径线上的宽度处处相等，内齿 Ί和外齿 8成内外相叠，是没有缝隙的相叠结 构。
[0040] 内齿 7和外齿 8的弧形侧壁 9的弧形相同，并且内齿 7和外齿 8的弧形侧壁 9的 弧形与内侧壁 4和外侧壁 5是同一个圆心。所以，实体环 2弹性的张开或收缩时，内齿 7和 外齿 8的弧形侧壁 9都缘同一个半径的弧形轨迹平滑的滑动，内齿 7和外齿 8的弧形侧壁 9 之间不产生间隙。 内齿 7的齿顶面 10与外齿 8的齿底面 11在实体环 2弹性的张开产生内 间隙，外齿 8的齿顶面 10与内齿 7的齿底面 11在实体环 2弹性的张开产生外间隙，内间隙 与外间隙没有气体通道，即内间隙与外间隙被完全闭合的内齿 7和外齿 8的弧形侧壁 9密 封，使实体环 2弹性的张开时，只产生内间隙与外间隙两个不相通的间隙，两个不相通的间 隙不会使活塞环产生窜气。
[0041 ] 内齿 7的齿顶面 K)与外齿 8的齿底面 11的形状和大小相同，外齿 8的齿顶面 K) 与内齿 7的齿底面 1 1的形状和大小相同。这样结构有利于在实体环 2弹性的收缩状态时， 内间隙和外间隙最小 ,进一步减小窜气的概率。
[0042] 实施例 2、内齿和外齿的弧形侧壁的弧长相等的密封气体的内外齿式活塞环
[0043] 如实施例 1的全部结构，但内齿 7和外齿 8的弧形侧壁 9的弧长相等。也就是内齿 7和外齿 8—样长，这样结构有利于在实体环 2弹性的收缩状态时，内间隙和外间隙相等，且 内间隙和外间隙最小，进一步减小窜气的概率。
[0044] 实施例 3、齿顶面和齿底面为形状和大小相同弧形的密封气体的内外齿式活塞环 [0045] 如实施例 2的全部结构，但齿顶面 10为弧形，齿底面 1 1.为形状和大小相同的弧 形。 这样齿顶面 1()无尖角，在实体环 2弹性的张开或收缩时，内齿 7和外齿 8不易划伤对 面的弧形侧壁 9。 也不易划伤缸体内壁，和不易划伤活塞体 21气环槽 22外璧。
[0046] 实施例 4、外齿宽度大于内齿宽度的密封气体的内外齿式活塞环
[0047] 如实施例 3的全部结构，但外齿 8的宽度大于内齿 7的宽度。 活塞在缸体内往复 运动时，活塞环与缸体内壁不断磨擦，活塞环和缸体内壁都会有损耗，实体环 2弹性的张开 可填补损耗。 外齿 8的宽度大于内齿 7的宽度的多余宽度，用于活塞环损耗的预留宽度。
[0048] 实施例 5、带有密封气体的内外齿式活塞环的活塞
[0049] 如图 2、3，如实施例 1的全部结构，但还包括圆柱形的活塞体 21，活塞体 21表面有 气环槽 22,气环槽 22与活塞体 21的中心柱线垂直,气环槽 22中嵌有密封气体的内外齿式 活塞环 23。 在气环槽 22中，可嵌入一个或多个密封气体的内外齿式活塞环 23。
[0050] 实施例 6、优选 ^带有密封气体的内外齿式活塞环的活塞
[0051 ] 如实施例 4的全部结构，但还包括圆柱形的活塞体 21，活塞体 21表面有气环槽
22 ,气环槽 22与活塞体 21的中心柱线垂直，气环槽 22中嵌有密封气体的内外齿式活塞环
23。 在气环槽 22中，可嵌入一个或多个密封气体的内外齿式活塞环 23。
4 替换页（细则笫 26条） [0052] 并且，气环槽 22中嵌有上下层叠的两个外直径相等的密封气体的内外齿式 ffi塞 环 23。防止某一个密封气体的内外齿式活塞环 23的内齿 7和外齿 8的弧形侧壁 9有窜气， 还可用另一个密封气体的内外齿式活塞环 23的实体部分阻塞窜气的气体。
[0053] 上下层叠的两个密封气体的内外齿式活塞环 23的两个 " Z"字型切口 6不相重合， 防止上下窜气。
[0054] 以两个密封气体的内外齿式活塞环 23的中心为圆心，上下层叠的两个密封气体 的内外齿式活塞环 23的两个内齿 7的齿顶面 10之间的夹角为 ].8(Γ ，即上下层叠的两个密 封气体的内外齿式活塞环 23的两个内齿 7的齿顶面 10之间的夹角为 180° 。

Claims

权 利 要 求 书
1.密封气体的内外齿式活塞环，包括有一个切口的实体环（2)，实体环（2)有上下两面 为形状和大小相同的环形表面（3)，上下两个环形表面（3)的内环之间是内侧壁（4)，上下 两个环形表面（3)的外环之间是外侧壁（5)，其特征在于：上下两个环形表面（3)之间相通 的切口为" Z"字型切口 （6)，使实体环 (2)成内齿 (7)和外齿 (8)的齿形结合；在环形表面
•(3)，内齿 (7)和外齿 (8)的宽度之和等亍环形表面（3)的宽度；内齿 (7)和外齿 (8)的弧 形侧壁（9)的弧形相同，并且内齿（7)和外齿（8)的弧形侧壁（9)的弧形与内侧壁（4)和 外侧壁 (5)是同一个圆心；内齿 (7)的齿顶面 (10)与外齿 (8)的齿底面 (1 1)的形状和大 小相同，外齿 (8)的齿顶面（10)与内齿 (7)的齿底面 (1 1 )的形状和大小相同。
2. 根据权利要求 1所述的密封气体的内外齿式活塞环，其特征在于：内齿（7)和外齿 (8)的弧形侧壁 (9)的弧长相等。
3.根据权利要求 1所述的密封气体的内外齿式活塞环，其特征在于：齿顶面（10)为弧 形，齿底面（11)为形状和大小相同的弧形。
4.根据权利要求 1或 2或 3所述的密封气体的内外齿式活塞环，其特征在于：外齿（8) 的宽度大于内齿（7)的宽度。
5. 带有权利要求 1或 2或 3或 4所述密封气体的内外齿式活塞环的活塞，包括圆柱形 的活塞体（21)，活塞体（21)表面有气环槽（22) ,气环槽（22)与活塞体（21)的中心柱线垂 直，其特征在于：气环槽（22)中嵌有密封气体的内外齿式活塞环（23)。
6. 根据权利要求 5所述的密封气体的内外齿式活塞环的活塞，其特征在于：气环槽 (22)中嵌有上下层叠的两个外直径相等的密封气体的内外齿式活塞环（23)。
7. 根据权利要求 6 '所述的密封气体的内外齿式活塞环的活塞，其特征在于：上下层叠 的两个密封气体的内外齿式活塞环（23)的两个 "Z"字型切口（6)不相重合。
8. 根据权利要求 7所述的密封气体的内外齿式活塞环的活塞,其特征在于：以两个密 封气体的内外齿式活塞环（23)的中心为圆心，上下层叠的两个密封气体的内外齿式活塞 环（23)的两个内齿. (7)的齿顶面（1.0)之间的夹角为 5° -1.80° 。
9. 根据权利要求 8所述的密封气体的内外齿式活塞环的活塞，其特征在于：上下层 叠的两个密封气体的内外齿式活塞环（23)的两个内齿（7)的齿顶面（10)之间的夹角为
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