WO2015180517A1 - 机油泵链条机械张紧器及其组装方法 - Google Patents

机油泵链条机械张紧器及其组装方法 Download PDF

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Publication number
WO2015180517A1
WO2015180517A1 PCT/CN2015/073709 CN2015073709W WO2015180517A1 WO 2015180517 A1 WO2015180517 A1 WO 2015180517A1 CN 2015073709 W CN2015073709 W CN 2015073709W WO 2015180517 A1 WO2015180517 A1 WO 2015180517A1
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Prior art keywords
chain
arm
contact boss
bottom plate
torsion
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PCT/CN2015/073709
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English (en)
French (fr)
Inventor
刘琦盛
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舍弗勒技术股份两合公司
刘琦盛
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Publication of WO2015180517A1 publication Critical patent/WO2015180517A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
    • F02B67/04—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus
    • F02B67/06—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus driven by means of chains, belts, or like endless members
    • 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
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains

Definitions

  • the invention relates to a chain mechanical tensioner, in particular to an oil pump chain mechanical tensioner and a assembling method thereof.
  • the oil pump mounted on the engine is driven by a chain due to space constraints.
  • the oil pump chain mechanical tensioner is often used in the prior art to ensure that the chain has a suitable tension.
  • a conventional oil pump chain mechanical tensioner includes a torsion spring 1 and a chain guide plate 2. among them:
  • the torsion spring 1 has a winding portion 11, a first twist arm 12, and a second twist arm 13.
  • the chain guide plate 2 has a bottom plate 21, a mounting post 22 fixed to the same side of the bottom plate 21, a chain contact boss 23, and a twist arm stopper portion 24.
  • the winding portion 11 is sleeved on the mounting post 22.
  • the twist arm restraining portion 24 is adjacent to the chain contact boss 23, and a passage G is formed therebetween to accommodate the first twist arm 12 of the torsion spring 1, preventing the first twist arm 12 from coming out of the chain guide plate 2.
  • the first twist arm 12 may be in an outward direction A perpendicular to the bottom plate 21 (ie, the side of the bottom plate facing the mounting post) The direction gradually away from the bottom plate) is released from the gap, thereby causing the first torsion arm 12 to come out of the chain guide plate 2.
  • the problem to be solved by the present invention is that the existing oil pump chain mechanical tensioner has the risk of the torsion arm of the torsion spring coming out of the chain guide plate.
  • an oil pump chain mechanical tensioner comprising: a torsion spring having: a winding portion, a first twist arm and a second twist arm; and a guide chain plate having: a bottom plate and a solid a mounting post, a chain contact boss and a twisting arm limiting portion disposed on the first side of the bottom plate; the winding portion is sleeved on the mounting post; the twisting arm limiting portion has a body portion, and The chain contact bosses are oppositely disposed and fixed on the first side surface, and the body portion extends along a side facing the chain contact boss to form a connecting portion; the connecting portion abuts against the The chain contacts the boss, and a passage for receiving the first torsion arm is formed between the body portion, the connecting portion and the chain contact boss.
  • the first twist arm is a straight arm.
  • the end of the second twist arm is in the shape of a hook.
  • the chain contact boss is integrally formed with the twist arm limiting portion, and the connecting portion is connected to the chain contact boss.
  • the body portion of the torsion arm limiting portion extends along a side facing the chain contact boss and forms a connecting portion abutting the chain contact boss connection, the end of the twist arm limiting portion adjacent to the chain contact boss is in contact with the chain. There is no more gap between the bosses, even if there is vibration when the oil pump chain mechanical tensioner is working, the first torsion arm of the torsion spring can always be confined in the passage, preventing the first torsion arm from coming out of the chain guide plate.
  • the present invention provides another mechanical pump chain mechanical tensioner, comprising: a torsion spring having: a winding portion, a first torsion arm and a second torsion arm; and a guide plate having: a bottom plate, and Mounting post, chain contact boss and torsion arm fixed on the first side of the bottom plate a limiting portion; the winding portion is sleeved on the mounting post; the twisting arm limiting portion is adjacent to the chain contact boss, and a passage is formed between the two to receive the torsion spring a twisting arm; the passage is in a closed shape away from an inner wall of the first side of the bottom plate.
  • the twist arm limiting portion is integrally formed with the chain contact boss.
  • the channel is closed from the inner wall of the first side of the bottom plate, there is no gap between the end of the torsion arm limiting portion near the chain contact boss and the chain contact boss, even if the oil pump chain mechanical tensioner is working. Vibration, the first torsion arm of the torsion spring can also be always confined in the passage, preventing the first torsion arm from coming out of the guide plate.
  • the present invention also provides a method for assembling a mechanical tensioner of an oil pump chain, comprising: providing a torsion spring having: a winding portion, a first torsion arm and a second torsion arm; providing a guide a chain plate, the chain guide plate has a bottom plate, and a mounting post, a chain contact boss and a twist arm limiting portion fixed on the first side of the bottom plate, wherein the twist arm limiting portion is adjacent to the chain contact boss And forming a channel between the two, the channel is in a closed shape away from the inner wall of the first side of the bottom plate; the first twist arm is inserted into the channel; the first twist arm is inserted into the distance The winding portion is then turned over, and the winding portion is sleeved on the mounting post.
  • the twist arm limiting portion includes a body portion extending from the first side surface of the bottom plate, and a connecting portion extending from the body portion toward the chain contact boss, the connecting portion abutting against the The chain contacts the boss.
  • the chain contact boss is integrally formed with the twist arm limiting portion, and the connecting portion is connected to the chain contact boss.
  • FIG. 1 is a schematic perspective view of a conventional mechanical tensioner of an oil pump chain
  • FIG. 2 is a schematic view showing the failure of the first torsion arm of the torsion spring of FIG. 1 to be disengaged from the guide chain plate;
  • Figure 3 is a perspective view of a mechanical tensioner of an oil pump chain in an embodiment of the present invention.
  • FIG. 4 to FIG. 5 are assembled diagrams of the mechanical tensioner of the oil pump chain shown in FIG. 3;
  • Figure 6 is a schematic view showing the application of the mechanical tensioner of the oil pump chain shown in Figure 3 to the engine.
  • the oil pump chain mechanical tensioner of the present embodiment includes a torsion spring 3 and a chain guide plate 4.
  • the torsion spring 3 has a winding portion 31, a first twisting arm 32 and a second twisting arm 33.
  • the first twisting arm 32 and the second twisting arm 33 are respectively from the leading end and the end of the winding portion 31 along the winding portion.
  • the tangential direction of 31 extends outward.
  • the chain guide plate 4 has a bottom plate 41 and a mounting post 42 fixed to the first side surface S1 of the bottom plate 41, a chain contact boss 43 and a twist arm restraining portion 44.
  • the winding portion 31 is sleeved on the mounting post 42.
  • the twist arm restraining portion 44 is adjacent to the chain contact boss 43 and forms a passage G therebetween to accommodate the first twist arm 32 of the torsion spring 3.
  • the inner wall of the channel G away from the first side S1 of the bottom plate 41 has a closed shape, that is, the inner wall of the channel G away from the first side S1 of the bottom plate 41 is a continuous surface which is not provided with the first torsion arm 32 perpendicular to the bottom plate 41 an outward direction A (i.e., an opening that is detached from the passage G in a direction in which the bottom plate faces the mounting post and gradually moves away from the bottom plate).
  • the torsion arm limiting portion 44 and the chain contact boss 43 can also prevent the first torsion arm 32 from coming out in a direction A perpendicular to the bottom plate 41 and gradually away from the bottom plate 41, so that the torsion spring 3 is A torsion arm 32 is always confined within the passage G, thereby preventing the first torsion arm 32 from coming out of the chain guide 4.
  • the torsion arm limiting portion 44 includes: a body portion 440 extending from the first side surface S1 of the bottom plate 41, and the body portion 440 is spaced apart from the chain contact boss 43;
  • the connecting portion 441 extends along the side facing the chain contact boss 43 and the connecting portion 441 abuts against the chain contact boss 43.
  • the twist arm restraining portion 44 is integrally formed with the chain contact boss 43 such that one end of the connecting portion 441 of the twist arm restraining portion 44 adjacent to the chain contact boss 43 is connected to the chain contact boss 43.
  • the twist arm restraining portion 44 can be regarded as being L-shaped along a cross section perpendicular to the bottom plate 41 and the first twist arm 32. It should be noted that the shape of the twist arm restraining portion 44 is not limited to the embodiment, and may be set to other shapes.
  • one end of the connecting portion 441 of the twist arm limiting portion 44 adjacent to the chain contact boss 43 is not connected to the chain contact boss 43, but only abuts against the chain contact boss 43 so that the connection is made.
  • One end of the portion 441 adjacent to the chain contact boss 43 is seamlessly fitted to the chain contact boss 43. In this manner, the inner wall of the channel G away from the first side surface S1 of the bottom plate 41 can also be closed.
  • the connecting portion 441 abuts against the chain contact boss 43 including two cases: the first case is that the connecting portion 441 is connected to the chain contact boss 43, and the second case is the connecting portion.
  • the 441 is not connected to the chain contact boss 43, and the two are simply joined together without gaps.
  • the mounting post 42 is cylindrical and has a central through hole (not labeled).
  • the center through hole penetrates the first side surface S1 of the bottom plate 41 and the second side surface S2 of the bottom plate 41 in a direction perpendicular to the first side surface S1 of the bottom plate 41, and the first side surface S1 and the second side surface S2 are disposed opposite to each other.
  • the bottom plate 41, the mounting post 42, the chain contact boss 43, and the twist arm restraining portion 44 are integrally formed. In this way, the chain guide plate 4 can be formed at one time. Specifically, the chain guide plate 4 can be formed by a process of injection molding.
  • the first torsion arm 32 is a straight arm. In other embodiments, the first torsion arm 32 can also be disposed in other shapes as long as the first torsion arm 32 can be received in the channel G.
  • the end 330 of the second twist arm 33 has a hook shape.
  • a torsion spring 3 and a guide chain plate 4 are provided.
  • the specific structure of the torsion spring 3 and the guide chain plate 4 is as described above;
  • the winding portion 31 of the torsion spring 3 is turned to a position parallel to the bottom plate 41, the first torsion arm 32 of the torsion spring 3 is aligned with the channel G, and inserted into the channel G in a direction B parallel to the bottom plate 41;
  • the first torsion arm 32 of the torsion spring 3 continues to be inserted into the channel G in a direction B parallel to the bottom plate 41, while at the same time, the winding portion 31 is turned over, and the first torsion arm 32 is to be closed.
  • the first twist arm 32 is stopped, the winding portion 31 is continuously turned over, and the winding portion 31 is sleeved on the mounting post 42.
  • the winding portion 31 can also be turned to the axis before the first twisted arm 32 is inserted into the passage G. Not parallel to the position of the bottom plate 41, after the first torsion arm 32 is inserted into the channel G for a certain distance, the winding portion 31 is turned over to be sleeved on the mounting post 42.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Abstract

一种机油泵链条机械张紧器及其组装方法，该张紧器包括：扭簧(3)，具有卷绕部(31)、第一扭臂(32)和第二扭臂(33)；导链板(4)，具有底板(41)、以及固设于底板(41)第一侧面的安装柱(42)、链条接触凸台(43)和扭臂限位部(44)；卷绕部(31)，套设于安装柱(42)上；扭臂限位部(44)，具有本体部(440)，与链条接触凸台(43)间隔相对设置，并固设于第一侧面上，本体部(440)沿面向链条接触凸台(43)的一侧延伸形成连接部(441)，连接部(441)抵靠于链条接触凸台(43)，本体部(440)、连接部(441)与链条接触凸台(43)之间形成用以收容第一扭臂(32)的通道。该张紧器解决了扭簧的扭臂从导链板脱出的问题。

Description

机油泵链条机械张紧器及其组装方法
本申请要求2014年5月28日提交中国专利局、申请号为201410230966.4、发明名称为“机油泵链条机械张紧器及其组装方法”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
本发明涉及一种链条机械张紧器，特别是涉及一种机油泵链条机械张紧器及其组装方法。
背景技术
目前，安装在发动机上的机油泵由于受到空间的限制而采用链条进行驱动。为了保证链条不至于太松、也不至于过紧，现有技术中往往利用机油泵链条机械张紧器来确保链条具有合适的张紧力。
如图1所示，现有一种机油泵链条机械张紧器包括扭簧1和导链板2。其中：
扭簧1具有：卷绕部11、第一扭臂12和第二扭臂13。
导链板2具有：底板21、固设于底板21同一侧的安装柱22、链条接触凸台23和扭臂限位部24，卷绕部11套设于安装柱22上。
扭臂限位部24靠近链条接触凸台23，并且在两者之间形成一个通道G以收容扭簧1的第一扭臂12，防止第一扭臂12从导链板2脱出。
结合图2所示，出于机油泵链条机械张紧器下述组装方面的考虑，扭臂限位部24靠近链条接触凸台23的一端240与链条接触凸台23之间存在间隙(未标识)：用于将第一扭臂12从所述间隙压入通道G内。但是，所述间隙又会带来以下问题：
由于机油泵链条机械张紧器工作时存在振动，故第一扭臂12有可能会沿垂直于底板21向外的方向A(即在底板面向安装柱一侧沿 逐渐远离底板的方向)从所述间隙脱出，进而导致第一扭臂12从导链板2脱出。
发明内容
本发明要解决的问题是：现有机油泵链条机械张紧器存在扭簧的扭臂从导链板脱出的风险。
为解决上述问题，本发明提供了一种机油泵链条机械张紧器，包括：扭簧，具有：卷绕部、第一扭臂和第二扭臂；导链板，具有：底板、以及固设于所述底板第一侧面的安装柱、链条接触凸台和扭臂限位部；所述卷绕部套设于所述安装柱上；所述扭臂限位部具有：本体部，与所述链条接触凸台间隔相对设置，并固设于所述第一侧面上，所述本体部沿面向所述链条接触凸台的一侧延伸形成连接部；所述连接部抵靠于所述链条接触凸台，并且所述本体部、连接部与所述链条接触凸台之间形成用以收容所述第一扭臂的通道。
可选的，所述第一扭臂为直臂。
可选的，所述第二扭臂的末端呈弯钩状。
可选的，所述链条接触凸台与所述扭臂限位部一体成型，并且所述连接部与所述链条接触凸台连接。
与现有技术相比，本发明的技术方案具有以下优点：
由于扭臂限位部的本体部沿面向链条接触凸台的一侧延伸，并形成抵靠于链条接触凸台连接的连接部，故扭臂限位部靠近链条接触凸台的一端与链条接触凸台之间不再存在间隙，即使机油泵链条机械张紧器工作时存在振动，扭簧的第一扭臂也能够始终被限制在通道内，防止了第一扭臂从导链板脱出。
为解决上述问题，本发明提供了另一种机油泵链条机械张紧器，包括：扭簧，具有：卷绕部、第一扭臂和第二扭臂；导链板，具有：底板、以及固设于所述底板第一侧面的安装柱、链条接触凸台和扭臂 限位部；所述卷绕部套设于所述安装柱上；所述扭臂限位部靠近所述链条接触凸台，并且在两者之间形成一个通道以收容所述扭簧的第一扭臂；所述通道远离所述底板第一侧面的内壁呈封闭的形状。
可选的，所述扭臂限位部与所述链条接触凸台一体成型。
与现有技术相比，本发明的技术方案具有以下优点：
由于通道远离底板第一侧面的内壁呈封闭的形状，故扭臂限位部靠近链条接触凸台的一端与链条接触凸台之间不再存在间隙，即使机油泵链条机械张紧器工作时存在振动，扭簧的第一扭臂也能够始终被限制在通道内，防止了第一扭臂从导链板脱出。
另外，本发明还提供了一种机油泵链条机械张紧器的组装方法，包括：提供一扭簧，所述扭簧具有：卷绕部、第一扭臂和第二扭臂；提供一导链板，所述导链板具有底板、以及固设于所述底板第一侧面的安装柱、链条接触凸台和扭臂限位部，所述扭臂限位部靠近所述链条接触凸台并且在两者之间形成一个通道，所述通道远离所述底板第一侧面的内壁呈封闭的形状；将所述第一扭臂对准所述通道插入；所述第一扭臂插入一定距离后翻转卷绕部，使所述卷绕部套设于所述安装柱上。
可选的，所述扭臂限位部包括自所述底板第一侧面延伸的本体部、及自所述本体部朝向所述链条接触凸台延伸的连接部，所述连接部抵靠于所述链条接触凸台。
可选的，所述链条接触凸台与所述扭臂限位部一体成型，并且所述连接部与所述链条接触凸台连接。
附图说明
图1是现有一种机油泵链条机械张紧器的立体结构示意图；
图2是图1中扭簧的第一扭臂从导链板脱出的失效示意图；
图3是本发明的一个实施例中机油泵链条机械张紧器的立体结 构示意图；
图4至图5是图3所示机油泵链条机械张紧器的组装示意图；
图6是图3所示机油泵链条机械张紧器固定在发动机上的应用示意图。
具体实施方式
为使本发明的上述目的、特征和优点能够更为明显易懂，下面结合附图对本发明的具体实施例做详细的说明。
如图3所示，本实施例的机油泵链条机械张紧器包括：扭簧3和导链板4。其中，扭簧3具有：卷绕部31、第一扭臂32和第二扭臂33，第一扭臂32、第二扭臂33分别自卷绕部31的首端、末端沿卷绕部31的切线方向向外延伸。导链板4具有：底板41、以及固设于底板41第一侧面S1的安装柱42、链条接触凸台43和扭臂限位部44，卷绕部31套设于安装柱42上。
扭臂限位部44靠近链条接触凸台43，并且在两者之间形成一个通道G以收容扭簧3的第一扭臂32。通道G远离底板41第一侧面S1的内壁呈封闭的形状，即，通道G远离底板41第一侧面S1的内壁是一个连续的表面，该表面未设置有使第一扭臂32沿垂直于底板41向外的方向A(即在底板面向安装柱一侧沿逐渐远离底板的方向)从通道G脱离的开口。
由于通道G远离底板41第一侧面S1的内壁呈封闭的形状，故扭臂限位部44靠近链条接触凸台43的一端与链条接触凸台43之间不再存在间隙，即使机油泵链条机械张紧器工作时存在振动，扭臂限位部44、链条接触凸台43也能防止第一扭臂32沿垂直于底板41、并逐渐远离底板41的方向A脱出，使扭簧3的第一扭臂32始终被限制在通道G内，进而防止了第一扭臂32从导链板4脱出。
具体地，扭臂限位部44包括：自底板41第一侧面S1延伸的本体部440，本体部440与链条接触凸台43间隔相对设置；由本体部 440沿面向链条接触凸台43的一侧延伸而成的连接部441，连接部441抵靠于链条接触凸台43。在本实施例中，扭臂限位部44与链条接触凸台43一体成型，使得扭臂限位部44中连接部441靠近链条接触凸台43的一端与链条接触凸台43连接。这样一来，可以视作扭臂限位部44沿垂直于底板41及第一扭臂32的截面呈L型。但需说明的是，扭臂限位部44的形状并不应局限于本实施例，也可以设置为其他形状。
在本实施例的变化例中，扭臂限位部44中连接部441靠近链条接触凸台43的一端未与链条接触凸台43连接，而只是抵靠在链条接触凸台43上，使得连接部441靠近链条接触凸台43的一端与链条接触凸台43无缝隙贴合在一起，通过这种方式也能够实现通道G远离底板41第一侧面S1的内壁呈封闭的形状。
因此，在本发明的技术方案中，连接部441抵靠于链条接触凸台43包括两种情形：第一种情形是连接部441有与链条接触凸台43连接，第二种情形是连接部441未与链条接触凸台43连接，两者只是无缝隙贴合在一起。
安装柱42呈圆柱形，并设有中心通孔(未标识)。该中心通孔沿垂直于底板41第一侧面S1的方向贯穿底板41第一侧面S1和底板41第二侧面S2，第一侧面S1和第二侧面S2背对设置。
底板41、安装柱42、链条接触凸台43、扭臂限位部44一体成型。这样一来，可以一次性形成导链板4。具体地，可以利用注塑成型的工艺形成导链板4。
第一扭臂32为直臂。在其他实施例中，第一扭臂32也可以设置为其他形状，只要保证第一扭臂32能收容于通道G内即可。第二扭臂33的末端330呈弯钩状。
如图6所示，将本实施例的机油泵链条机械张紧器应用至发动机(未图示)上时，利用容纳于安装柱42中心通孔内的销轴5将机油 泵链条机械张紧器安装至发动机上，导链板4可绕销轴5转动，且第二扭臂33的末端330与固设于发动机上的销轴6的外圆周表面接触，销轴6能够防止第二扭臂33转动。
下面结合图4至图5对本实施例机油泵链条机械张紧器的其中一种组装方法作介绍：
首先，如图4所示，提供一扭簧3和一导链板4，扭簧3和导链板4的具体结构参考上面所述；
然后，将扭簧3的卷绕部31翻转至轴线平行于底板41的位置，将扭簧3的第一扭臂32对准通道G，并沿平行于底板41的方向B插入通道G；
接着，结合图4和图5所示，使扭簧3的第一扭臂32继续沿平行于底板41的方向B插入通道G，与此同时，翻转卷绕部31，待第一扭臂32插入一定距离，以使卷绕部31的轴线与安装柱42的轴线相交时，停止插入第一扭臂32，继续翻转卷绕部31，将卷绕部31套设于安装柱42上。
上述仅仅是本实施例机油泵链条机械张紧器的其中一种组装方法，在另一种组装方法中，在将第一扭臂32插入通道G之前，也可以将卷绕部31翻转至轴线不平行于底板41的任意位置，待将第一扭臂32插入通道G一段距离之后，再翻转卷绕部31，使其套设于安装柱42上。
虽然本发明披露如上，但本发明并非限定于此。任何本领域技术人员，在不脱离本发明的精神和范围内，均可作各种更动与修改，因此本发明的保护范围应当以权利要求所限定的范围为准。

Claims (9)

  1. 一种机油泵链条机械张紧器，包括：
    扭簧，具有：卷绕部、第一扭臂和第二扭臂；
    导链板，具有：底板、以及固设于所述底板第一侧面的安装柱、链条接触凸台和扭臂限位部；
    所述卷绕部套设于所述安装柱上；
    所述扭臂限位部具有：本体部，与所述链条接触凸台间隔相对设置，并固设于所述第一侧面上，所述本体部沿面向所述链条接触凸台的一侧延伸形成连接部；
    其特征在于：所述连接部抵靠于所述链条接触凸台，并且所述本体部、连接部与所述链条接触凸台之间形成用以收容所述第一扭臂的通道。
  2. 如权利要求1所述的机油泵链条机械张紧器，其特征在于：所述第一扭臂为直臂。
  3. 如权利要求1所述的机油泵链条机械张紧器，其特征在于：所述第二扭臂的末端呈弯钩状。
  4. 如权利要求1至3中任一项所述的机油泵链条机械张紧器，其特征在于：所述链条接触凸台与所述扭臂限位部一体成型，并且所述连接部与所述链条接触凸台连接。
  5. 一种机油泵链条机械张紧器，包括：
    扭簧，具有：卷绕部、第一扭臂和第二扭臂；
    导链板，具有：底板、以及固设于所述底板第一侧面的安装柱、 链条接触凸台和扭臂限位部；
    所述卷绕部套设于所述安装柱上；
    所述扭臂限位部靠近所述链条接触凸台，并且在两者之间形成一个通道以收容所述扭簧的第一扭臂；
    其特征在于：所述通道远离所述底板第一侧面的内壁呈封闭的形状。
  6. 如权利要求5所述的机油泵链条机械张紧器，其特征在于：所述扭臂限位部与所述链条接触凸台一体成型。
  7. 一种机油泵链条机械张紧器的组装方法，其特征在于，包括：
    提供一扭簧，所述扭簧具有：卷绕部、第一扭臂和第二扭臂；
    提供一导链板，所述导链板具有：底板、以及固设于所述底板第一侧面的安装柱、链条接触凸台和扭臂限位部，所述扭臂限位部靠近所述链条接触凸台并且在两者之间形成一个通道，所述通道远离所述底板第一侧面的内壁呈封闭的形状；
    将所述第一扭臂对准所述通道插入；
    所述第一扭臂插入一定距离后翻转所述卷绕部，使所述卷绕部套设于所述安装柱上。
  8. 如权利要求7所述的机油泵链条机械张紧器的组装方法，其特征在于：所述扭臂限位部包括自所述底板第一侧面延伸的本体部、及自所述本体部朝向所述链条接触凸台延伸的连接部，所述连接部抵靠于所述链条接触凸台。
  9. 如权利要求8所述的机油泵链条机械张紧器的组装方法，其特 征在于：所述链条接触凸台与所述扭臂限位部一体成型，并且所述连接部与所述链条接触凸台连接。
PCT/CN2015/073709 2014-05-28 2015-03-05 机油泵链条机械张紧器及其组装方法 WO2015180517A1 (zh)

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