WO2011134379A1 - Piston connecting rod structrue - Google Patents
Piston connecting rod structrue Download PDFInfo
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- WO2011134379A1 WO2011134379A1 PCT/CN2011/073283 CN2011073283W WO2011134379A1 WO 2011134379 A1 WO2011134379 A1 WO 2011134379A1 CN 2011073283 W CN2011073283 W CN 2011073283W WO 2011134379 A1 WO2011134379 A1 WO 2011134379A1
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- Prior art keywords
- connecting rod
- piston
- wedge
- head
- mounting groove
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Classifications
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C7/00—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads
- F16C7/02—Constructions of connecting-rods with constant length
- F16C7/023—Constructions of connecting-rods with constant length for piston engines, pumps or the like
Definitions
- This invention particularly relates to a piston rod structure of an internal combustion engine.
- a piston of a small general-purpose internal combustion engine is connected to a small end of a connecting rod through a piston pin, and a large end of the connecting rod is connected with a crankshaft through a crank pin.
- the piston drives the crankshaft to rotate by continuous connection. Since the continuous rotation is periodically reciprocated and self-oscillated with the reciprocating motion of the piston, the connecting rod is subjected to extremely complicated cross-variable loads such as compression, stretching and bending, which requires the connecting rod to have Sufficient strength and rigidity to ensure normal operation and service life.
- the existing sides of the small end of the piston connecting rod are usually symmetric and parallel.
- the two symmetrical side end faces 22' of the connecting rod small head 21' are parallel.
- the corresponding groove of the piston 10' is also a parallel side, although the slot of the mounting groove is provided with a 'j, the side of the slot for easy assembly, but the oblique side does not exceed the center line 30' of the pin hole of the piston pin. . ⁇ Use this parallel symmetry face small head to make the thickness of the small end of the connecting rod meet the requirements of strength and rigidity.
- An object of the present invention is to provide a piston connecting rod structure of an internal combustion engine, which makes the head of the small end of the connecting rod contract to the tail, and reduces the reciprocating inertial force of the connecting rod by subtracting the excess mass of the connecting rod. At the same time, it can meet the strength and rigidity of the connecting rod.
- the piston connecting rod structure comprises a piston and a connecting rod, and the connecting rod small head of the connecting rod and the piston are hinged through the pin shaft, and the small ends of the connecting rod are formed along the axial end faces of the connecting rod pin shaft hole
- a contracting structure that contracts toward the top of the piston, the piston having a mounting groove that mates with the constricted configuration of the small end of the connecting rod.
- the small end of the connecting rod forms a wedge-shaped head having a slanted end surface, and the mounting groove is a wedge-shaped mounting groove.
- the angle between the inclined end face of the wedge head and the central axis of the connecting rod is 5 to 20 degrees.
- the angle between the inclined end face of the wedge head and the central axis of the connecting rod is 10 degrees.
- the distal end faces of the end faces of the connecting rod small heads also include symmetrically disposed parallel end faces parallel to the central axis of the connecting rod.
- the inclined angle of the inclined surface of the wedge-shaped mounting groove is larger than the inclined angle of the inclined surface of the wedge-shaped head.
- the bottom edge of the wedge-shaped mounting groove facing the top of the piston is higher than the center line of the link pin hole on the small end of the connecting rod.
- the left and right symmetrical end faces of the small end of the connecting rod are set as the inclined surface, so that the small head of the connecting rod forms a wedge-shaped head, and the connecting rod can be minimized under the premise of satisfying the strength and rigidity of the connecting rod.
- the "excess quality” refers to the overall strength of the workpiece, but due to structural constraints, the safety factor of a part of the part is too high (generally greater than 5) and the excess of the part is caused;
- the wedge-shaped groove is arranged at the position of the assembly connecting rod, which also minimizes the surplus quality of the piston.
- the angle between the inclined end face of the small-headed wedge-shaped head of the connecting rod and the central axis of the connecting rod is 5. ⁇ 20. Through this angle parameter, it can be ensured that the strength and rigidity of the small end of the connecting rod will not be weakened, and the surplus quality is subtracted.
- the bottom end of the inclined end surface of the wedge-shaped mounting groove on the piston is higher than the center line of the connecting rod pin hole on the small end of the connecting rod, thereby achieving a reduction in the surplus quality of the piston without affecting the strength of the piston itself.
- the invention has the advantages of simple structure and easy manufacture. It is made into a wedge-shaped connecting rod small head by the small end of the connecting rod, and the connecting rod fitting groove of the piston is formed into a wedge-shaped groove, thereby minimizing the surplus quality of the piston connecting rod and making the piston The reciprocating inertia force of the connecting rod is reduced, which solves the contradiction between the existing piston connecting rod and the inertial force, thereby improving the performance of the internal combustion engine.
- FIG. 1 is a schematic structural view of a conventional piston link structure
- FIG. 2 is a schematic structural view of a piston link structure according to the present invention.
- DETAILED DESCRIPTION Referring to Figure 2, in accordance with an embodiment of the present invention, a piston rod structure includes a piston 10 and a connecting rod 20, the connecting rod head 21 of the connecting rod 20 being hingedly coupled to the piston 10 by a piston pin.
- a pin hole is disposed correspondingly on the piston 10 and the connecting rod small head 21, and the piston pin shaft passes through the pin hole of the piston 10 and the connecting rod small head 21 to connect the connecting rod 20 and the piston 10 at together.
- Both end faces of the link small head 21 in the axial direction of the link pin hole 30 form a contraction structure that contracts toward the top of the piston 10, and preferably, the link small head 21 forms a wedge-shaped head.
- a mounting groove 11 for mounting the small end 21 of the connecting rod is provided on the piston 10. Accordingly, the mounting groove 11 is a wedge-shaped mounting groove adapted to the shape of the wedge-shaped head of the connecting rod head 21.
- the piston 10 of the internal combustion engine is connected to the connecting rod small head 21 through a piston pin, and the connecting rod head 24 is connected to the crankshaft through a crank pin. When the internal combustion engine is in operation, the piston 10 drives the crankshaft to rotate through the connecting rod 20.
- the left and right symmetrical end faces of the connecting rod small head 21 are arranged as the inclined end surface portion 22, so that the connecting rod small head 21 forms a wedge-shaped head, and the surplus of the connecting rod 20 can be minimized under the premise of satisfying the strength and rigidity of the connecting rod 20. quality.
- the angle between the inclined end surface portion 22 of the connecting rod small head 21 and the central axis of the connecting rod 20 is 5° to 20°, and the angle parameter can ensure that the strength and rigidity of the small end of the connecting rod are not weakened, and subtracted The quality is surplus.
- the angle between the inclined end face portion 22 of the connecting rod and the central axis of the connecting rod 20 of the embodiment is 10°, so that the mass of the connecting rod small head 21 can be minimized under the premise of satisfying the strength, so as to reduce the whole The reciprocating inertial force of the machine.
- the side faces of the connecting rod small heads 21 facing the connecting rod head 24 further include symmetrically disposed parallel end faces 23 parallel to the central axis of the connecting rod 20, and the width of the parallel end face portions 23 is the design width of the connecting rod heads 21.
- a symmetrical end portion 22 of the wedge-shaped head is provided with a link pin hole 30 for fitting a piston pin.
- the portion of the piston 10 for assembling the link 20 is provided as a wedge-shaped mounting groove through which a pin hole provided in the piston pin seat of the piston 10 passes.
- the inclined angle of the inclined surface of the wedge-shaped mounting groove (that is, the angle between the inclined surface of the wedge-shaped mounting groove and the central axis of the connecting rod 20) is larger than the inclined angle of the inclined surface of the wedge-shaped head (that is, the angle between the inclined surface of the wedge-shaped head and the central axis of the connecting rod 20) ;), effectively preventing the connecting rod small head 21 from the piston 10 on both sides of the wedge-shaped mounting groove, and also facilitating the loading and unloading of the connecting rod 20.
- the sloped bottom edge of the wedge-shaped mounting groove on the piston 10 is disposed higher than the center line of the link pin hole 30 on the connecting rod small head 21, whereby the surplus quality of the piston 10 can be reduced without affecting the piston 10 itself. strength.
- the piston connecting rod assembly process is as follows: The connecting rod small head 21 of the connecting rod 20 is inserted into the wedge-shaped mounting groove of the piston 10, and the connecting rod pin shaft hole 30 of the connecting rod small head 21 is opposite to the pin shaft hole on the piston, from the piston One side of the pin hole is fitted with a piston pin for fixing, thereby connecting the connecting rod 20 and the piston 10 together.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
活塞连杆结构 技术领域 本发明特别涉及一种内燃机的活塞连杆结构。 背景技术 小型通用内燃机的活塞通过活塞销与连杆小头连接， 连杆大头与曲轴通过 曲柄销连接， 内燃机工作时活塞通过连才干带动曲轴转动。 由于连才干在活塞往复 运动的驱动下随其进行周期性变化的往复运动和自身摆动， 因此连杆受到的是 压缩、 拉伸和弯曲等极为复杂的交叉变载荷， 这就要求连杆必须有足够的强度 和刚度来保证正常工作和使用寿命， 因此现有的活塞连杆小头两侧面通常是对 称平行的， 见图 1 , 连杆小头 21'两对称侧端面 22'是平行的， 并且对应的活塞 10'的装配槽两边也是平行边，虽然装配槽的槽口两边设有一' j、段为了便于装配 的斜边， 但是该斜边没有超过活塞销的销轴孔中心线 30'。 釆用这种平行对称 面小头使连杆小头的厚度能够满足强度和刚度的需要。 然而， 由于目前以通过 保证连杆厚度的方式来满足连杆的强度和刚度， 势必使连杆的质量增大， 质量 越大就使活塞连杆在进行往复运动时的惯性力越大， 而往复惯性力越大， 对活 塞连杆运动性能的影响越大， 由此会导致内燃机的寿命和性能遭受不利影响。 针对活塞连杆存在的质量和惯性力相矛盾的问题， 如何解决在保证连杆强度和 刚度的前提下， 减小活塞连杆往复惯性力的问题， 长期以来一直为内燃机制造 业的一个难题。 发明内容 本发明的目的是提供一种内燃机的活塞连杆结构， 它使连杆小头的头部向 尾部呈收缩状， 通过减去连杆的富余质量来实现连杆往复惯性力的减小， 同时 又能满足连杆的强度和刚度。 本发明的目的是这样实现的： 活塞连杆结构包括活塞和连杆， 连杆的连杆 小头与活塞通过销轴铰接， 连杆小头的沿连杆销轴孔轴向的两端面形成朝向活 塞顶部收缩的收缩结构， 活塞具有与连杆小头的收缩结构相配合的安装槽。 连杆小头形成具有斜端面部的楔形头部， 安装槽为楔形安装槽。 楔形头部的斜端面部与连杆的中轴线的夹角为 5度至 20度。 楔形头部的斜端面部与连杆的中轴线的夹角为 10度。 连杆小头的两端面的朝向连杆大头侧还包括平行于连杆的中轴线的对称 设置的平行端面部。 楔形安装槽的斜面倾斜角度大于楔形头部的斜面倾斜角度。 楔形安装槽的朝向活塞顶部的斜面底边高于连杆小头上的连杆销轴孔的 中心线。 由于釆用上述技术方案， 将连杆小头的左右对称端面设置为斜面， 使连杆 小头形成楔形头部， 可以在满足连杆的强度和刚度的前提下， 最大限度的减少 连杆的富余质量， 该"富余质量"是指以满足工件整体强度， 但由于结构上的限 制， 使得零件的某部位的安全系数过高 （一般大于 5 )而造成这部分质量过剩； 所述活塞的用于装配连杆的部位设置为楔形槽， 同样最大限度的减少活塞的富 余质量。 由此实现活塞连杆的整体质量减轻， 实现活塞连杆往复惯性力的减小， 以保证活塞连杆的机械性能和使用寿命， 同时提高内燃机的工作性能。 连杆小头楔形头部的斜端面部与连杆的中轴线的夹角为 5。~ 20。， 通过此 夹角参数， 可以保证连杆小头的强度和刚性不会减弱， 而减去的是富余质量。 活塞上的楔形安装槽的斜端面部底边高于连杆小头上的连杆销轴孔的中 心线， 由此实现活塞富余质量的减少， 而不会影响活塞自身强度。 本发明的结构简单， 制作容易， 它通过将连杆小头制作成楔形连杆小头， 将活塞的连杆装配槽制作成楔形槽， 最大限度的减少了活塞连杆的富余质量， 使活塞连杆的往复运动惯性力减小， 解决了现有活塞连杆无法克服质量与惯性 力之间的矛盾， 从而提高内燃机的性能。 附图说明 图 1为现有活塞连杆结构的结构示意图； 以及 图 2为根据本发明的活塞连杆结构的结构示意图。 具体实施方式 参照图 2, 根据本发明的实施例， 活塞连杆结构包括活塞 10和连杆 20, 连杆 20的连杆小头 21与活塞 10通过活塞销轴铰接在一起。 在本实施例中， 在活塞 10与连杆小头 21上对应设置有销轴孔， 活塞销轴穿过活塞 10与连杆 小头 21上的销轴孔将连杆 20与活塞 10连接在一起。 连杆小头 21的沿连杆销 轴孔 30轴向的两端面形成朝向活塞 10顶部收缩的收缩结构， 优选地， 连杆小 头 21形成楔形头部。 在活塞 10上设置有安装连杆小头 21的安装槽 11。 相应 地， 安装槽 11为与连杆小头 21的楔形头部形状相适应的楔形安装槽。 内燃机的活塞 10通过活塞销与连杆小头 21连接， 连杆大头 24与曲轴通 过曲柄销连接， 内燃机工作时活塞 10通过连杆 20带动曲轴转动。 连杆小头 21 的左右对称端面设置为斜端面部 22, 使连杆小头 21形成楔形头部， 可以在满 足连杆 20的强度和刚度的前提下， 最大限度的减少连杆 20的富余质量。 连杆 小头 21的斜端面部 22与连杆 20的中轴线的夹角为 5° ~ 20°,通过此夹角参数， 可以保证连杆小头的强度和刚性不会减弱， 而减去的是富余质量。 优选地， 本 实施例的连杆小头斜端面部 22与连杆 20的中轴线的夹角为 10°, 能够在满足 强度的前提下使得连杆小头 21 的质量最小， 以减小整机的往复惯性力。 在连 杆小头 21的两端面的朝向连杆大头 24侧还包括平行于连杆 20的中轴线的对 称设置的平行端面部 23 , 平行端面部 23的宽度为连杆小头 21的设计宽度，一 般与连杆大头宽度相等或略小一点， 平行端面部 23的大小由斜端面部 22的倾 斜角度的大小确定， 能够保证连杆小头 21 具有足够的连接强度。 楔形头部的 对称设置的斜端面部 22上设置有用于装配活塞销轴的连杆销轴孔 30。 活塞 10的用于装配连杆 20的部位设置为楔形安装槽， 活塞 10的活塞销 座上设置的销孔从楔形安装槽穿过。 楔形安装槽的斜面倾斜角度（即楔形安装 槽的斜面与连杆 20 的中轴线的夹角） 大于楔形头部的斜面倾斜角度 （即楔形 头部的斜面与连杆 20的中轴线的夹角；)， 有效防止连杆小头 21与楔形安装槽 两侧的活塞 10发生千涉， 也更便于连杆 20的装卸。 活塞 10上的楔形安装槽 的斜面底边高于连杆小头 21上的连杆销轴孔 30的中心线设置， 由此可以实现 活塞 10富余质量的减少， 而不会影响活塞 10的自身强度。 活塞连杆装配过程如下： 将连杆 20的连杆小头 21插入活塞 10的楔形安 装槽， 连杆小头 21的连杆销轴孔 30与活塞上的销轴孔相对设置， 从活塞上销 轴孔一侧装入活塞销进行固定， 从而将连杆 20和活塞 10连接在一起。 通过改 变连杆小头 21的结构， 在保证连杆小头 21的强度和刚性不会减弱的条件下， 减去连杆小头 21 的富余质量， 从而减小运动过程中活塞连杆的惯性力对内燃 机的影响。 以上所述仅为本发明的优选实施例而已， 并不用于限制本发明， 对于本领 域的技术人员来说， 本发明可以有各种更改和变化。 凡在本发明的 ^"神和原则 之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发明的保护范围之 内。 BACKGROUND OF THE INVENTION 1. Field of the Invention This invention particularly relates to a piston rod structure of an internal combustion engine. BACKGROUND OF THE INVENTION A piston of a small general-purpose internal combustion engine is connected to a small end of a connecting rod through a piston pin, and a large end of the connecting rod is connected with a crankshaft through a crank pin. When the internal combustion engine is in operation, the piston drives the crankshaft to rotate by continuous connection. Since the continuous rotation is periodically reciprocated and self-oscillated with the reciprocating motion of the piston, the connecting rod is subjected to extremely complicated cross-variable loads such as compression, stretching and bending, which requires the connecting rod to have Sufficient strength and rigidity to ensure normal operation and service life. Therefore, the existing sides of the small end of the piston connecting rod are usually symmetric and parallel. Referring to Fig. 1, the two symmetrical side end faces 22' of the connecting rod small head 21' are parallel. And the corresponding groove of the piston 10' is also a parallel side, although the slot of the mounting groove is provided with a 'j, the side of the slot for easy assembly, but the oblique side does not exceed the center line 30' of the pin hole of the piston pin. .这种Use this parallel symmetry face small head to make the thickness of the small end of the connecting rod meet the requirements of strength and rigidity. However, since the strength and rigidity of the connecting rod are currently satisfied by ensuring the thickness of the connecting rod, the mass of the connecting rod is inevitably increased, and the greater the mass, the greater the inertial force of the piston connecting rod when reciprocating. The greater the reciprocating inertial force, the greater the effect on the piston rod's kinematic performance, which can adversely affect the life and performance of the internal combustion engine. Aiming at the contradiction between the mass and the inertial force of the piston connecting rod, how to solve the problem of reducing the reciprocating inertia of the piston connecting rod under the premise of ensuring the strength and rigidity of the connecting rod has been a difficult problem for the internal combustion engine manufacturing industry for a long time. SUMMARY OF THE INVENTION An object of the present invention is to provide a piston connecting rod structure of an internal combustion engine, which makes the head of the small end of the connecting rod contract to the tail, and reduces the reciprocating inertial force of the connecting rod by subtracting the excess mass of the connecting rod. At the same time, it can meet the strength and rigidity of the connecting rod. The object of the present invention is achieved as follows: The piston connecting rod structure comprises a piston and a connecting rod, and the connecting rod small head of the connecting rod and the piston are hinged through the pin shaft, and the small ends of the connecting rod are formed along the axial end faces of the connecting rod pin shaft hole A contracting structure that contracts toward the top of the piston, the piston having a mounting groove that mates with the constricted configuration of the small end of the connecting rod. The small end of the connecting rod forms a wedge-shaped head having a slanted end surface, and the mounting groove is a wedge-shaped mounting groove. The angle between the inclined end face of the wedge head and the central axis of the connecting rod is 5 to 20 degrees. The angle between the inclined end face of the wedge head and the central axis of the connecting rod is 10 degrees. The distal end faces of the end faces of the connecting rod small heads also include symmetrically disposed parallel end faces parallel to the central axis of the connecting rod. The inclined angle of the inclined surface of the wedge-shaped mounting groove is larger than the inclined angle of the inclined surface of the wedge-shaped head. The bottom edge of the wedge-shaped mounting groove facing the top of the piston is higher than the center line of the link pin hole on the small end of the connecting rod. Since the above technical solution is adopted, the left and right symmetrical end faces of the small end of the connecting rod are set as the inclined surface, so that the small head of the connecting rod forms a wedge-shaped head, and the connecting rod can be minimized under the premise of satisfying the strength and rigidity of the connecting rod. Excess quality, the "excess quality" refers to the overall strength of the workpiece, but due to structural constraints, the safety factor of a part of the part is too high (generally greater than 5) and the excess of the part is caused; The wedge-shaped groove is arranged at the position of the assembly connecting rod, which also minimizes the surplus quality of the piston. Thereby, the overall mass of the piston connecting rod is alleviated, and the reciprocating inertia force of the piston connecting rod is reduced, so as to ensure the mechanical performance and the service life of the piston connecting rod, and at the same time improve the working performance of the internal combustion engine. The angle between the inclined end face of the small-headed wedge-shaped head of the connecting rod and the central axis of the connecting rod is 5. ~ 20. Through this angle parameter, it can be ensured that the strength and rigidity of the small end of the connecting rod will not be weakened, and the surplus quality is subtracted. The bottom end of the inclined end surface of the wedge-shaped mounting groove on the piston is higher than the center line of the connecting rod pin hole on the small end of the connecting rod, thereby achieving a reduction in the surplus quality of the piston without affecting the strength of the piston itself. The invention has the advantages of simple structure and easy manufacture. It is made into a wedge-shaped connecting rod small head by the small end of the connecting rod, and the connecting rod fitting groove of the piston is formed into a wedge-shaped groove, thereby minimizing the surplus quality of the piston connecting rod and making the piston The reciprocating inertia force of the connecting rod is reduced, which solves the contradiction between the existing piston connecting rod and the inertial force, thereby improving the performance of the internal combustion engine. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic structural view of a conventional piston link structure; and FIG. 2 is a schematic structural view of a piston link structure according to the present invention. DETAILED DESCRIPTION Referring to Figure 2, in accordance with an embodiment of the present invention, a piston rod structure includes a piston 10 and a connecting rod 20, the connecting rod head 21 of the connecting rod 20 being hingedly coupled to the piston 10 by a piston pin. In the present embodiment, a pin hole is disposed correspondingly on the piston 10 and the connecting rod small head 21, and the piston pin shaft passes through the pin hole of the piston 10 and the connecting rod small head 21 to connect the connecting rod 20 and the piston 10 at together. Both end faces of the link small head 21 in the axial direction of the link pin hole 30 form a contraction structure that contracts toward the top of the piston 10, and preferably, the link small head 21 forms a wedge-shaped head. A mounting groove 11 for mounting the small end 21 of the connecting rod is provided on the piston 10. Accordingly, the mounting groove 11 is a wedge-shaped mounting groove adapted to the shape of the wedge-shaped head of the connecting rod head 21. The piston 10 of the internal combustion engine is connected to the connecting rod small head 21 through a piston pin, and the connecting rod head 24 is connected to the crankshaft through a crank pin. When the internal combustion engine is in operation, the piston 10 drives the crankshaft to rotate through the connecting rod 20. The left and right symmetrical end faces of the connecting rod small head 21 are arranged as the inclined end surface portion 22, so that the connecting rod small head 21 forms a wedge-shaped head, and the surplus of the connecting rod 20 can be minimized under the premise of satisfying the strength and rigidity of the connecting rod 20. quality. The angle between the inclined end surface portion 22 of the connecting rod small head 21 and the central axis of the connecting rod 20 is 5° to 20°, and the angle parameter can ensure that the strength and rigidity of the small end of the connecting rod are not weakened, and subtracted The quality is surplus. Preferably, the angle between the inclined end face portion 22 of the connecting rod and the central axis of the connecting rod 20 of the embodiment is 10°, so that the mass of the connecting rod small head 21 can be minimized under the premise of satisfying the strength, so as to reduce the whole The reciprocating inertial force of the machine. The side faces of the connecting rod small heads 21 facing the connecting rod head 24 further include symmetrically disposed parallel end faces 23 parallel to the central axis of the connecting rod 20, and the width of the parallel end face portions 23 is the design width of the connecting rod heads 21. Generally, it is equal to or slightly smaller than the width of the large end of the connecting rod, and the size of the parallel end surface portion 23 is determined by the inclination angle of the inclined end surface portion 22, and the connecting rod small head 21 can be ensured to have sufficient joint strength. A symmetrical end portion 22 of the wedge-shaped head is provided with a link pin hole 30 for fitting a piston pin. The portion of the piston 10 for assembling the link 20 is provided as a wedge-shaped mounting groove through which a pin hole provided in the piston pin seat of the piston 10 passes. The inclined angle of the inclined surface of the wedge-shaped mounting groove (that is, the angle between the inclined surface of the wedge-shaped mounting groove and the central axis of the connecting rod 20) is larger than the inclined angle of the inclined surface of the wedge-shaped head (that is, the angle between the inclined surface of the wedge-shaped head and the central axis of the connecting rod 20) ;), effectively preventing the connecting rod small head 21 from the piston 10 on both sides of the wedge-shaped mounting groove, and also facilitating the loading and unloading of the connecting rod 20. The sloped bottom edge of the wedge-shaped mounting groove on the piston 10 is disposed higher than the center line of the link pin hole 30 on the connecting rod small head 21, whereby the surplus quality of the piston 10 can be reduced without affecting the piston 10 itself. strength. The piston connecting rod assembly process is as follows: The connecting rod small head 21 of the connecting rod 20 is inserted into the wedge-shaped mounting groove of the piston 10, and the connecting rod pin shaft hole 30 of the connecting rod small head 21 is opposite to the pin shaft hole on the piston, from the piston One side of the pin hole is fitted with a piston pin for fixing, thereby connecting the connecting rod 20 and the piston 10 together. By changing the structure of the small end 21 of the connecting rod, under the condition that the strength and rigidity of the small head 21 of the connecting rod are not weakened, The excess mass of the connecting rod small head 21 is subtracted, thereby reducing the influence of the inertial force of the piston connecting rod on the internal combustion engine during the movement. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010154622.1 | 2010-04-26 | ||
| CN201010154622A CN101806246A (en) | 2010-04-26 | 2010-04-26 | Piston connecting rod structure of internal-combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2011134379A1 true WO2011134379A1 (en) | 2011-11-03 |
Family
ID=42608176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2011/073283 Ceased WO2011134379A1 (en) | 2010-04-26 | 2011-04-25 | Piston connecting rod structrue |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101806246A (en) |
| WO (1) | WO2011134379A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806246A (en) * | 2010-04-26 | 2010-08-18 | 隆鑫工业有限公司 | Piston connecting rod structure of internal-combustion engine |
| CN103306815B (en) * | 2013-07-03 | 2016-02-17 | 湖南江滨机器（集团）有限责任公司 | A kind of piston crank mechanism |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4269083A (en) * | 1979-07-27 | 1981-05-26 | General Motors Corporation | Connecting rod |
| CN2585983Y (en) * | 2002-08-22 | 2003-11-12 | 江苏大学 | Crank-guide of single-cylinder diesel engine |
| CN2859003Y (en) * | 2005-12-09 | 2007-01-17 | 徐州重型机械有限公司 | Detachable piston rod mechanism |
| CN2888159Y (en) * | 2006-02-06 | 2007-04-11 | 潍柴动力股份有限公司 | Improved engine connecting rod |
| CN2934720Y (en) * | 2006-07-26 | 2007-08-15 | 安徽江淮汽车股份有限公司 | 2.8L pressurized central-cooling diesel oil engine connection rod |
| CN101806246A (en) * | 2010-04-26 | 2010-08-18 | 隆鑫工业有限公司 | Piston connecting rod structure of internal-combustion engine |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201401242Y (en) * | 2009-05-12 | 2010-02-10 | 东风朝阳柴油机有限责任公司 | diesel engine piston combustion chamber |
| CN201705489U (en) * | 2010-03-30 | 2011-01-12 | 重庆长安汽车股份有限公司 | Piston with wedge-shaped piston pin structure |
| CN201705490U (en) * | 2010-04-26 | 2011-01-12 | 隆鑫工业有限公司 | Piston connecting rod structure of internal combustion engine |
-
2010
- 2010-04-26 CN CN201010154622A patent/CN101806246A/en active Pending
-
2011
- 2011-04-25 WO PCT/CN2011/073283 patent/WO2011134379A1/en not_active Ceased
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4269083A (en) * | 1979-07-27 | 1981-05-26 | General Motors Corporation | Connecting rod |
| CN2585983Y (en) * | 2002-08-22 | 2003-11-12 | 江苏大学 | Crank-guide of single-cylinder diesel engine |
| CN2859003Y (en) * | 2005-12-09 | 2007-01-17 | 徐州重型机械有限公司 | Detachable piston rod mechanism |
| CN2888159Y (en) * | 2006-02-06 | 2007-04-11 | 潍柴动力股份有限公司 | Improved engine connecting rod |
| CN2934720Y (en) * | 2006-07-26 | 2007-08-15 | 安徽江淮汽车股份有限公司 | 2.8L pressurized central-cooling diesel oil engine connection rod |
| CN101806246A (en) * | 2010-04-26 | 2010-08-18 | 隆鑫工业有限公司 | Piston connecting rod structure of internal-combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101806246A (en) | 2010-08-18 |
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