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公开(公告)号：US20150075468A1
公开(公告)日：2015-03-19
申请号：US14460290
申请日：2014-08-14
Applicant: MAZDA MOTOR CORPORATION
Inventor： Akitomo TAKAGI , Toshimasa KOTANI , Shunsuke HABARA , Takashi KASHIWABARA
CPC classification number: F01L1/344 , F01L1/08 , F01L13/0036 , F01L2013/0052 , F01L2820/031
Abstract: A cam element portions is configured such that respective maximum lift portions (lift ending points) of both-side end-face cams thereof are provided at respective phases which are different from each other in a rotational direction and that a maximum value of a length, in an axial direction, between respective cam faces of the both-side end-face cams which are provided at the same phase is set to be a distance, in the axial direction, between a first operational member and a second operational member or smaller. Accordingly, in a valve gear of an engine in which cams operative to control opening/closing of a valve are switchable, it can be properly prevented that a camshaft locks and stop rotating because of an operational malfunction of an operational member or the like.
Abstract translation: 凸轮元件部分被构造成使得其两侧端面凸轮的相应的最大提升部分（提升终点）设置在沿旋转方向彼此不同的各个相位处，并且长度的最大值， 在轴向方向上，设置在相同相位的两侧端面凸轮的相应凸轮面之间在轴向方向上设置在第一操作构件和第二操作构件之间的距离以下。 因此，在可操作地控制阀的打开/关闭的凸轮的发动机的阀齿轮是可切换的情况下，可以适当地防止由于操作构件等的操作故障而使凸轮轴锁定并停止转动。
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公开(公告)号：US20170191387A1
公开(公告)日：2017-07-06
申请号：US15312872
申请日：2015-05-27
Applicant: MAZDA MOTOR CORPORATION
Inventor： Akitomo TAKAGI , Toshimasa KOTANI
CPC classification number: F01L13/00 , F01L1/047 , F01L1/053 , F01L1/08 , F01L1/46 , F01L13/0036 , F01L13/0042 , F01L2001/0473 , F01L2013/0052 , F01L2013/101 , F01L2250/02 , F01L2800/16
Abstract: A valve train device for an engine includes: a shaft portion; a cam element portion which is mounted on the shaft portion; and an operation member. The cam element portion includes a first end surface cam and a second end surface cam. Each of the first end surface cam and the second end surface cam includes a lift portion. The operation member includes a first operation member and a second operation member. The first operation member causes the cam element portion to move in a first direction, and the second operation member causes the cam element portion to move in a second direction. The first end surface cam includes a first slope portion, and guides the first operation member radially outwardly; and a displacement allowing portion which is formed adjacent to the first slope portion, and allows relative displacement between the first operation member, and the cam element portion.
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公开(公告)号：US20150075467A1
公开(公告)日：2015-03-19
申请号：US14460284
申请日：2014-08-14
Applicant: MAZDA MOTOR CORPORATION
Inventor： Toshimasa KOTANI , Akitomo TAKAGI , Shunsuke HABARA , Takashi KASHIWABARA
CPC classification number: F01L1/344 , F01L1/08 , F01L13/0036 , F01L2013/0052 , F01L2820/031
Abstract: A cam element portion comprises a slant portion (reverse-rotation return slope portion), which is positioned on a rotary-delay side from a maximum-lift portion (lift ending point) of an end-face cam and slants inward toward the rotary-delay side from an outer peripheral face of the end-face cam. Accordingly, in a valve gear of an engine in which cams operative to control opening/closing of a valve are switchable, it can be properly prevented that the cam element portion is switched unexpectedly and improperly or an operational member breaks down which are possibly caused by an engine's reverse rotation.
Abstract translation: 凸轮元件部分包括从端面凸轮的最大提升部分（提升终点）位于旋转延迟侧的倾斜部分（反转回转斜面部分），并向内倾斜向旋转延伸部分 从端面凸轮的外周面延伸。 因此，在其中可操作以控制阀的打开/关闭的凸轮的发动机的阀齿轮是可切换的，可以适当地防止凸轮元件部分意外地和不正确地切换或操作构件分解，这可能是由 发动机反向旋转。
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