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1. 发明申请

US20150139841A1 Oil Pump 审中-公开
标题翻译：油泵
公开(公告)号：US20150139841A1
公开(公告)日：2015-05-21
申请号：US14528987
申请日：2014-10-30
申请人： YAMADA MANUFACTURING CO., LTD.
发明人： Masato IZUTSU , Takatoshi WATANABE , Junichi MIYAJIMA , Yasuhiro KOSUGI
IPC分类号： F04C14/22 , F04C15/06 , F04C2/10
CPC分类号： F04C14/226 , F04C2/102 , F04C15/064
摘要： An oil pump includes an inner rotor, an outer rotor, an outer ring, and a pump housing including a suction port and a discharge port, and including a first seal land formed between a terminal end section of the suction port and a start end section of the discharge port, and moreover including a rotor chamber that houses the inner rotor, the outer rotor, and the outer ring. In swing of an angle from an initial position to a final position of the outer ring, a final position eccentric axis connecting a rotation center of the inner rotor and a rotation center of the outer rotor is turnable in an area of an angle exceeding 90 degrees on the suction port side with respect to an initial position eccentric axis.
摘要翻译：一种油泵，包括内转子，外转子，外圈和包括吸入口和排出口的泵壳体，并且包括形成在吸入口的终端部分和起始端部分之间的第一密封接合面并且还包括容纳内转子，外转子和外环的转子室。在从外圈的初始位置到最终位置的角度摆动时，连接内转子的旋转中心和外转子的旋转中心的最终位置偏心轴可以在超过90度的角度的区域中旋转在吸入口侧相对于初始位置偏心轴。

2. 发明申请

US20130115124A1 INTERNAL GEAR PUMP 有权
标题翻译：内齿轮泵
公开(公告)号：US20130115124A1
公开(公告)日：2013-05-09
申请号：US13670365
申请日：2012-11-06
申请人： YAMADA MANUFACTURING CO., LTD.
发明人： Kenichi FUJIKI , Masato IZUTSU
IPC分类号： F01C1/00
CPC分类号： F01C1/00 , F04C2/084 , F04C2/102
摘要： An internal gear pump in which an inner rotor and an outer rotor are arranged in a rotor housing chamber. A deepest meshing section is located in the vicinity on a line connecting a center of the inner rotor and a center of the outer rotor. A center of the rotor housing chamber is offset, from a position in which the center and the center of the outer rotor coincide with each other, to the deepest meshing section side by an amount smaller than a tip clearance, which is a gap between the tooth tip of the inner rotor and the tooth tip of the outer rotor in the vicinity of a seal land between a terminal end side of an intake port and a start end side of a discharge port.
摘要翻译：内齿轮泵，其中内转子和外转子布置在转子容纳室中。在连接内转子的中心和外转子的中心的线上，位于附近的最深的啮合部分。转子容纳室的中心从外转子的中心和中心彼此重合的位置偏移到最深的啮合部分侧，其量小于尖端间隙，该顶端间隙是内转子的齿尖和外转子的齿尖在进气口的终端侧和排出口的起始端侧之间的密封接合区附近。

3. 发明申请

US20170284424A1 HYDRAULIC CONTROL APPARATUS AND HYDRAULIC CONTROL METHOD 审中-公开
公开(公告)号：US20170284424A1
公开(公告)日：2017-10-05
申请号：US15464601
申请日：2017-03-21
申请人： YAMADA MANUFACTURING CO., LTD.
发明人： Yoshiaki KAWAURA , Masato IZUTSU , Kenichi FUJIKI , Yasuhiko KAN , Hiroyuki TAGUCHI , Yoshiro UMEZAWA , Shimpei IIZUKA
IPC分类号： F15B1/02 , F15B11/16 , F16H61/00
CPC分类号： F15B1/024 , B60Y2300/18016 , F15B1/033 , F15B11/16 , F15B2211/20523 , F15B2211/426 , F15B2211/625 , F15B2211/633 , F16H61/0021 , F16H63/3026 , F16H2059/746 , F16H2061/0034
摘要： A hydraulic control apparatus includes: a branch path that branches from a passage connected to an oil pump and equipment to which oil is supplied by the oil pump; an accumulator connected to the branch path to accumulate and discharge high-pressure oil supplied from the branch path; a check valve provided in an oil inlet path through which oil flows into the accumulator; a balance valve unit including a reference pressure chamber, a balance valve body that is biased toward an opening side by an opening compression spring, and a control pressure chamber; and a control solenoid that introduces or discharges the high-pressure oil into or from the control pressure chamber.

4. 发明申请

US20150167667A1 OIL PUMP DEVICE 审中-公开
标题翻译：油泵装置
公开(公告)号：US20150167667A1
公开(公告)日：2015-06-18
申请号：US14567926
申请日：2014-12-11
申请人： YAMADA MANUFACTURING CO., LTD.
发明人： Junichi MIYAJIMA , Takatoshi WATANABE , Masato IZUTSU
IPC分类号： F04C14/24 , F04C14/18 , F04C2/08
CPC分类号： F04C14/185 , F04C2/18 , F04C2270/052 , F04C2270/185
摘要： An oil pump device includes an oil circulation flow channel; a gear pump section including a drive gear unit and a driven gear unit; a first branching flow channel that branches from the oil circulation flow channel and communicates with the gear pump section; a hydraulic control valve that drives the driven gear unit; a second branching flow channel that branches from the oil circulation flow channel and communicates with a second small-diameter passage section; a solenoid valve that includes a drain discharge port; an orifice that is disposed between the second small-diameter passage section and the solenoid valve; and a spring that elastically urges the driven gear unit. The solenoid valve performs control in such a manner that the second branching flow channel and the second small-diameter passage section are put to a communicating state or a non-communicating state, and that the drain discharge port communicates with the second small-diameter passage section in the non-communicating state.
摘要翻译：油泵装置包括油循环流路; 齿轮泵部分，包括驱动齿轮单元和从动齿轮单元; 从所述油循环流路分支并与所述齿轮泵部连通的第一分支流路; 驱动从动齿轮单元的液压控制阀; 第二分支流路，其从所述油循环流路分支并与第二小直径通道部分连通; 电磁阀，其包括排水口; 布置在第二小直径通道部分和电磁阀之间的孔口; 以及弹性地推动从动齿轮单元的弹簧。电磁阀以这样的方式进行控制，使得第二分支流路和第二小直径通道部分处于连通状态或非连通状态，排泄口与第二小直径通道连通部分处于非通信状态。

5. 发明申请

US20130323106A1 ROTOR FOR OIL PUMP 有权
标题翻译：油泵转子
公开(公告)号：US20130323106A1
公开(公告)日：2013-12-05
申请号：US13903877
申请日：2013-05-28
申请人： YAMADA MANUFACTURING CO., LTD
发明人： Kenichi Fujiki , Masato IZUTSU , Takatoshi WATANABE
IPC分类号： F04C2/10
CPC分类号： F04C2/10 , F04C2/084 , F04C2/102
摘要： A rotor for an oil pump according to the present invention is a rotor that includes an inner rotor configured by teeth, each of which has a plurality of ellipses or circles, and an outer rotor that is disposed on the outside of the inner rotor and has one tooth more than the inner rotor, wherein, in a tooth of the inner rotor, a tooth top and a tooth root of a drive-side half-tooth region extending from the tooth top to the tooth root and a tooth top and a tooth root of a non-drive-side half-tooth region extending from the tooth top to the tooth root are each configured by a different ellipse or a circle. A circumferential axis along a circumferential direction of the ellipse or circle configuring the tooth top is longer in the non-drive-side half-tooth region than in the drive-side half-tooth region.
摘要翻译：根据本发明的用于油泵的转子是包括由齿构成的内转子的转子，每个转子具有多个椭圆或圆形，外转子设置在内转子的外侧上，并且具有比所述内转子多一个齿，其中，在所述内转子的齿中，从所述齿顶至齿根延伸的驱动侧半齿区域的齿顶和齿根，以及齿顶和齿从齿顶延伸到齿根的非驱动侧半齿区域的根分别由不同的椭圆或圆形构成。在非驱动侧半齿区域中，构成齿顶的椭圆形圆周方向的圆周方向与驱动侧半齿区域相比较长。

6. 发明申请

US20130112028A1 PUMP ROTOR 有权
标题翻译：泵转子
公开(公告)号：US20130112028A1
公开(公告)日：2013-05-09
申请号：US13670358
申请日：2012-11-06
申请人： YAMADA MANUFACTURING CO., LTD.
发明人： Kenichi FUJIKI , Masato IZUTSU
IPC分类号： F16H55/08
CPC分类号： F04C2/084 , F04C2/102 , Y10T74/19972
摘要： A pump rotor is an inner rotor of an internal gear pump, the inner rotor having a tooth profile, wherein a half-tooth portion of the tooth profile is formed of three tooth-profile formation circles that are elliptical or true-circular. Two of the tooth-profile formation circles are a combination of a small tooth-profile formation circle and a large tooth-profile formation circle in which the small tooth-profile formation circle is inscribed and is entirely included. A portion of the small tooth-profile formation circle forms an addendum portion of the half-tooth portion. A portion of the large tooth-profile formation circle in which the small tooth-profile formation circle is inscribed and is entirely included forms an engagement portion of the half-tooth portion. A portion of another tooth-profile formation circle that circumscribes the large tooth-profile formation circle forms a dedendum portion of the half-tooth portion.
摘要翻译：泵转子是内齿轮泵的内转子，内转子具有齿形，其中齿廓的半齿部分由三个圆形轮廓形成圆形，椭圆形或真圆形。两个齿形形状圆是小齿廓形成圆和大齿形形成圆的组合，其中小齿轮形状圆被内接并被完全包括在内。小齿廓形状圆的一部分形成半齿部分的齿顶部分。形成小齿廓形成圆并且完全包含的大齿形形成圆的一部分形成半齿部的接合部。限定大齿廓形成圆的另一个齿形形状圆的一部分形成半齿部的齿根部。

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