CN115585195A - 动力传递装置 - Google Patents
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Abstract
本发明公开了能够实现低成本化的动力传递装置。动力传递装置(100)具备惯性环(2)、板(3)、多个第一螺栓(11)、转矩传递部件(50)以及多个第二螺栓(12)。惯性环(2)为环状。惯性环(2)具有多个贯通孔(21)。各贯通孔(21)在周向上隔开间隔地配置。板(3)在轴向上相对于惯性环(2)配置于第一侧。各第一螺栓(11)从第一侧与各贯通孔(21)螺纹连接,将板(3)紧固于惯性环(2)。转矩传递部件(50)在轴向上相对于惯性环(2)配置于第二侧。各第二螺栓(12)从第二侧与各贯通孔(21)螺纹连接,将转矩传递部件(50)紧固于惯性环(2)。
Description
技术领域
本发明涉及一种动力传递装置。
背景技术
已知有将阻尼装置等转矩传递装置安装于柔性飞轮的动力传递装置(专利文献1)。柔性飞轮是通过在弹性板的外周部安装惯性环而构成的。另外,阻尼装置安装于惯性环。
专利文献1:日本特开2019-19918号公报
发明内容
存在降低如上所述构成的动力传递装置的成本的需求。因此,本发明的技术问题在于提供一种能够实现低成本化的动力传递装置。
本发明的一个方面所涉及的动力传递装置具备惯性环、板、多个第一螺栓、转矩传递部件以及多个第二螺栓。惯性环为环状。惯性环具有多个贯通孔。各贯通孔在周向上隔开间隔地配置。板在轴向上相对于惯性环配置于第一侧。各第一螺栓从第一侧与各贯通孔螺纹连接,从而将板紧固于惯性环。转矩传递部件在轴向上相对于惯性环配置于第二侧。转矩传递部件从惯性环被传递转矩。各第二螺栓从第二侧与各贯通孔螺纹连接,从而将转矩传递部件紧固于惯性环。
根据该结构,用于将板紧固于惯性环的第一螺栓和用于将转矩传递部件紧固于惯性环的第二螺栓螺纹连接于相同的贯通孔。这样,由于用于第一螺栓的贯通孔和第二螺栓的贯通孔是相同的,因此能够降低制造成本,能够实现动力传递装置的低成本化。
优选的是,动力传递装置还具备定位销。定位销是用于对转矩传递部件相对于惯性环进行定位的部件。贯通孔包括第一贯通孔和第二贯通孔。第一贯通孔具有遍及整个轴向的内螺纹部。第二贯通孔具有第一孔部和第二孔部。第一孔部配置于轴向的第一侧且具有内螺纹部。第二孔部配置于轴向的第二侧且不具有内螺纹部。第一螺栓与第一贯通孔或第二贯通孔的第一孔部螺纹连接。第二螺栓与第一贯通孔螺纹连接。定位销插入第二贯通孔的第二孔部。
优选的是,动力传递装置还具备定位销。定位销是用于对转矩传递部件相对于惯性环进行定位的部件。惯性环具有供定位销插入的多个凹部。
优选的是,板具有配置于同一圆周上的多个第三贯通孔。转矩传递部件具有配置于同一圆周上的多个第五贯通孔。第一螺栓经由第三贯通孔与贯通孔螺纹连接。第二螺栓经由第五贯通孔与贯通孔螺纹连接,各第三贯通孔的节圆直径与各第五贯通孔的节圆直径相同。
优选的是,转矩传递部件是对来自惯性环的旋转变动进行衰减的阻尼装置。
根据本发明,能够实现动力传递装置的低成本化。
附图说明
图1是用于表示第一贯通孔的动力传递装置的剖视图。
图2是用于表示第二贯通孔的动力传递装置的剖视图。
附图标记说明
2…惯性环;21…第一贯通孔;22…第二贯通孔;221…第一孔部;222…第二孔部;3…柔性板;31…第三贯通孔;11…第一螺栓;12…第二螺栓;13…定位销;50…阻尼装置;55…第五贯通孔;100…动力传递装置。
具体实施方式
以下,参照附图对本实施方式所涉及的动力传递装置进行说明。需要说明的是,在以下的说明中,轴向是动力传递装置的旋转轴O延伸的方向。另外,周向是以旋转轴O为中心的圆的周向,径向是以旋转轴O为中心的圆的径向。另外,在本实施方式中,轴向的第一侧是指图1和图2的左侧,轴向的第二侧是指图1和图2的右侧。
如图1和图2所示,动力传递装置100具备柔性飞轮10、阻尼装置50(转矩传递部件的一例)、多个第一螺栓11、多个第二螺栓12以及多个定位销13。动力传递装置100例如配置于从发动机或电动机等驱动源到驱动轮的动力传递路径内。例如,驱动源相对于动力传递装置100配置于轴向的第一侧,变速机等相对于动力传递装置100配置于轴向的第二侧。
动力传递装置100安装于第一传递轴和第二传递轴,以将来自驱动源侧的第一传递轴(省略图示)的动力传递到驱动轮侧的第二传递轴(省略图示)。第一传递轴和第二传递轴在同轴上配置。第一传递轴例如是曲轴。第二传递轴例如是变速器的输入轴。柔性飞轮10安装于第一传递轴,阻尼装置50安装于第二传递轴。
[柔性飞轮]
柔性飞轮10具有惯性环2和柔性板3(板的一例)。另外,柔性飞轮10具有碟形弹簧4。
惯性环2为环状。惯性环2具有多个第一贯通孔21和多个第二贯通孔22。各第一贯通孔21和各第二贯通孔22沿轴向贯通惯性环2。
各第一贯通孔21和各第二贯通孔22配置于同一圆周上。即,各第一贯通孔21的P.C.D(Pitch Circle Diameter:节圆直径)与各第二贯通孔22的P.C.D相同。各第一贯通孔21和各第二贯通孔22在周向上相互隔开间隔地配置。
如图1所示,第一贯通孔21沿轴向延伸。第一贯通孔21在轴向的第一侧开口,并且也在轴向的第二侧开口。第一贯通孔21在轴向上具有遍及整个轴向的内螺纹部。即,第一贯通孔21遍及轴向的整体而构成螺纹孔。
如图2所示,第二贯通孔22沿轴向延伸。第二贯通孔22在轴向的第一侧开口,并且也在轴向的第二侧开口。第二贯通孔22具有第一孔部221和第二孔部222。
第一孔部221是第二贯通孔22中的配置于轴向的第一侧的部分。第一孔部221具有内螺纹部。即,第一孔部221构成螺纹孔。
第二孔部222是第二贯通孔22中的配置于轴向的第二侧的部分。第二孔部222的直径大于第一孔部221的直径。因此,在第二孔部222与第一孔部221之间形成有台阶部223。需要说明的是,第二孔部222和第一孔部221在同轴上配置。
第二孔部222不具有内螺纹部。即,第二孔部222不构成螺纹孔。
如图1和图2所示,柔性板3在轴向上相对于惯性环2配置于第一侧。柔性板3为圆板状,在中央具有开口部。柔性板3的外径小于惯性环2的外径。
柔性板3在其内周部安装有第一传递轴。动力经由该第一传递轴从发动机、电动机等驱动源传递至柔性板3。柔性板3能够弹性变形。因此,柔性板3能够吸收来自第一传递轴的振动。
柔性板3在其外周部安装于惯性环2。柔性板3通过多个第一螺栓11安装于惯性环2。
详细而言,柔性板3具有多个第三贯通孔31。各第三贯通孔31在同一圆周上相互隔开间隔地配置。各第三贯通孔31的P.C.D与各第一贯通孔21的P.C.D相同。
第一螺栓11从轴向的第一侧贯通第三贯通孔31,并与第一贯通孔21或第二贯通孔22螺纹连接。由此,第一螺栓11将柔性板3紧固于惯性环2。
碟形弹簧4在轴向上配置于惯性环2与柔性板3之间。碟形弹簧4的外周端部与惯性环2的内周端部抵接。碟形弹簧4的内周端部与柔性板3抵接。
[阻尼装置]
阻尼装置50在轴向上相对于惯性环2配置于第二侧。阻尼装置50在其外周部安装于惯性环2。阻尼装置50通过多个第二螺栓12安装于惯性环2。阻尼装置50构成为从惯性环2被传递转矩。
详细而言,阻尼装置50具有多个第四贯通孔54和第五贯通孔55。各第四贯通孔54在同一圆周上相互隔开间隔地配置。各第四贯通孔54的P.C.D与各第二贯通孔22的P.C.D相同。即,各第四贯通孔54的P.C.D与各第三贯通孔31的P.C.D相同。
如图2所示,定位销13嵌合于该第四贯通孔54,并且也嵌合于第二贯通孔22的第二孔部222。这样,通过使定位销13嵌合于第四贯通孔54和第二贯通孔22,从而进行阻尼装置50在周向上的定位。需要说明的是,通过台阶部223限制定位销13向第一孔部221的侵入。
如图1所示,各第五贯通孔55在同一圆周上相互隔开间隔地配置。各第五贯通孔55和各第四贯通孔54配置在同一圆周上。各第五贯通孔55的P.C.D与各第一贯通孔21的P.C.D相同。即,各第五贯通孔55的P.C.D与各第三贯通孔31的P.C.D相同。
第二螺栓12从轴向的第二侧贯通第五贯通孔55,并与第一贯通孔21螺纹连接。由此,第二螺栓12将阻尼装置50紧固于惯性环2。需要说明的是,第一螺栓11的前端与第二螺栓12的前端不接触。即,第一螺栓11和第二螺栓12在轴向上具有间隔。
这样,在将阻尼装置50安装于惯性环2时,多个第二螺栓12全部与第一贯通孔21螺纹连接,而不与第二贯通孔22螺纹连接。在第二贯通孔22中嵌合有定位销13,以代替第二螺栓12的螺纹连接。另一方面,在将柔性板3安装于惯性环2时,多个第一螺栓11中的几个与第一贯通孔21螺纹连接,而剩余的第一螺栓11与第二贯通孔22螺纹连接。第二螺栓12与定位销13的合计数量与第一螺栓11的数量相等。即,第一螺栓11比第二螺栓12多。
阻尼装置50具有阻尼单元5和转矩限制器单元6。
阻尼单元5具有第一输入板51、第二输入板52、轮毂凸缘53以及多个弹性部件56。另外,阻尼单元5具有迟滞产生机构57。阻尼单元5构成为对旋转变动进行衰减。
第一输入板51和第二输入板52通过铆钉58相互固定,并一体地旋转。第一输入板51和第二输入板52具有窗部511、521。弹性部件56由该窗部511、521支承。
轮毂凸缘53构成为将来自第一输入板51和第二输入板52的转矩传递到输出侧的装置。轮毂凸缘53具有轮毂531和凸缘板532。轮毂531和凸缘板532通过多个齿以及与该齿啮合的多个凹部而成为一体化。
轮毂531是形成有花键孔的筒状部件。第二传递轴能够与该花键孔花键卡合。
凸缘板532在轴向上配置于第一输入板51与第二输入板52之间。凸缘板532具有收容孔533。在该收容孔533内收容有弹性部件56。
弹性部件56构成为在旋转方向上弹性地连结第一输入板51、第二输入板52与凸缘板532。弹性部件56例如是螺旋弹簧。
[转矩限制器单元]
转矩限制器单元6相对于阻尼单元5配置于径向外侧。转矩限制器单元6构成为对在柔性飞轮10与阻尼单元5之间传递的转矩进行限制。
转矩限制器单元6具有第一侧板61、第二侧板62、压板63、锥形弹簧64以及摩擦盘65。
第一侧板61和第二侧板62为环状。第一侧板61和第二侧板62通过铆钉66等相互固定。因此,第一侧板61和第二侧板62相互一体地旋转。在该第一侧板61和第二侧板62的外周部形成有多个第四贯通孔54和多个第五贯通孔55。
压板63为环状。压板63在轴向上配置于第一侧板61与第二侧板62之间。锥形弹簧64在轴向上配置于第二侧板62与压板63之间。锥形弹簧64对压板63朝向第一侧板61施力。
摩擦盘65具有芯板651和一对摩擦部件652。摩擦盘65在其内周端部安装于第一输入板51。锥形弹簧64经由压板63将摩擦盘65按压到第一侧板61。
当从惯性环2向第一侧板61输入规定值以上的转矩时,摩擦盘65在第一侧板61上滑动,摩擦盘65与第一侧板61相对旋转。
[变形例]
以上,对本发明的实施方式进行了说明,但本发明并不限定于此,只要不脱离本发明的主旨,就能够进行各种变更。
变形例1
在上述实施方式中,在惯性环2上形成有第一贯通孔21和第二贯通孔22这两种贯通孔,但惯性环2的结构并不限定于此。例如,也可以在惯性环2上仅形成第一贯通孔21,而不形成第二贯通孔22。
在这种情况下,能够使第一螺栓11的数量与第二螺栓12的数量相同。另外,也可以在惯性环2上形成定位销13用的多个凹部。定位销13用的各凹部的P.C.D可以与各第一贯通孔21的P.C.D相同,也可以不同。
变形例2
在上述实施方式中,阻尼装置50具有转矩限制器单元6,但也可以不具有转矩限制器单元6。在这种情况下,在阻尼单元5的第一输入板51和第二输入板52中的至少一方的外周部上形成有第四贯通孔54和第五贯通孔55。并且,第一输入板51和第二输入板52中的至少一方通过第二螺栓12紧固于惯性环2。
Claims (5)
1.一种动力传递装置,具备:
环状的惯性环,具有在周向上隔开间隔地配置的多个贯通孔;
板,在轴向上相对于所述惯性环配置于第一侧;
多个第一螺栓,从所述第一侧与各所述贯通孔螺纹连接,从而将所述板紧固于所述惯性环,
转矩传递部件,在轴向上相对于所述惯性环配置于第二侧,从所述惯性环向所述转矩传递部件传递转矩;以及
多个第二螺栓,从所述第二侧与各所述贯通孔螺纹连接,从而将所述转矩传递部件紧固于所述惯性环。
2.根据权利要求1所述的动力传递装置,其中,
所述动力传递装置还具备用于对所述转矩传递部件相对于所述惯性环进行定位的定位销,
所述贯通孔包括第一贯通孔和第二贯通孔,
所述第一贯通孔具有遍及整个轴向的内螺纹部,
所述第二贯通孔具有第一孔部和第二孔部,所述第一孔部配置于轴向的第一侧且具有内螺纹部,所述第二孔部配置于轴向的第二侧且不具有内螺纹部,
各所述第一螺栓与所述第一贯通孔或所述第二贯通孔的第一孔部螺纹连接,
各所述第二螺栓与所述第一贯通孔螺纹连接,
所述定位销插入所述第二贯通孔的所述第二孔部。
3.根据权利要求1所述的动力传递装置,其中,
所述动力传递装置还具备用于对所述转矩传递部件相对于所述惯性环进行定位的定位销,
所述惯性环具有供所述定位销插入的多个凹部。
4.根据权利要求1至3中任一项所述的动力传递装置,其中,
所述板具有配置于同一圆周上的多个第三贯通孔,
所述转矩传递部件具有配置于同一圆周上的多个第五贯通孔,
所述第一螺栓经由所述第三贯通孔与所述贯通孔螺纹连接,
所述第二螺栓经由所述第五贯通孔与所述贯通孔螺纹连接,
各所述第三贯通孔的节圆直径与各所述第五贯通孔的节圆直径相同。
5.根据权利要求1至4中任一项所述的动力传递装置,其中,
所述转矩传递部件是对来自所述惯性环的旋转变动进行衰减的阻尼装置。
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