公开(公告)号：US20190085731A1

公开(公告)日：2019-03-21

申请号：US15874905

申请日：2018-01-19

Applicant: Hangzhou XZB Tech Co.,Ltd

Inventor： NA XU ,  HAIJUN REN ,  HUA DONG

IPC: F01L1/14 ,  F16H53/06

CPC classification number: F01L1/14 ,  F01L2105/00 ,  F02M59/102 ,  F04B1/0426 ,  F16H53/06

Abstract: A welded high-pressure fuel pump roller tappet, which is used for the fuel injection system in an engine, includes a guide sleeve, a U-shaped holder and a pin-shaft-roller set. Symmetrical positions on the upper portion of left and right sidewalls of the guide sleeve are provided with inflexed flanges. Two sides of the flange are folded inwardly to form a limiting slot. The U-shaped holder includes a bottom plate and side plates located on left and right sides of the bottom plate. Symmetrical positions on two side plates are provided with axle holes. The pin-shaft-roller set is set up between two side plates of the U-shaped holder. Symmetrical positions on the upper portion of the flange are provided with opening slots. After assembly, the U-shaped holder is located between two flanges. Two side plates are located inside the limiting slots in the flanges.

公开(公告)号：US20170342951A1

公开(公告)日：2017-11-30

申请号：US15191543

申请日：2016-06-24

Applicant: Hangzhou XZB Tech Co.,Ltd

Inventor： Na XU ,  Haijun REN

IPC: F02M59/10 ,  F01L1/46

CPC classification number: F02M59/102 ,  F01L1/14 ,  F01L1/245 ,  F01L1/46 ,  F01L2105/00 ,  F01L2105/02 ,  F01L2109/00 ,  F04B1/0426

Abstract: A high-pressure oil pump roller tappet, used for automobile fuel injection system, mounted between the driving cam and the tappet. The roller tappet includes a shell, a holder, a roller, and a pin. Planes A are arranged on both sides of the seam on lateral sides of the shell. Holes I are arranged at symmetrical positions on two planes A. Holes II are arranged on symmetrical positions on vertical plates. The roller is located in the middle of the pin. Welding has no requirement on the thickness of the plate. The weight can be controlled effectively, reducing inertia force, friction, and wear, improving engine efficiency. The shell and holder are designed as being separate, ensuring that the shell subjects to lateral force as little as possible when the holder subjects to a force, such that the shell is less likely to vibrate. Thus, the shell avoids the abrasion.

公开(公告)号：US10408093B2

公开(公告)日：2019-09-10

申请号：US15874905

申请日：2018-01-19

Applicant: Hangzhou XZB Tech Co.,Ltd

Inventor： Na Xu ,  Haijun Ren ,  Hua Dong

IPC: F01L1/14 ,  F16H53/06 ,  F02M59/10 ,  F04B1/04

Abstract: A welded high-pressure fuel pump roller tappet, which is used for the fuel injection system in an engine, includes a guide sleeve, a U-shaped holder and a pin-shaft-roller set. Symmetrical positions on the upper portion of left and right sidewalls of the guide sleeve are provided with inflexed flanges. Two sides of the flange are folded inwardly to form a limiting slot. The U-shaped holder includes a bottom plate and side plates located on left and right sides of the bottom plate. Symmetrical positions on two side plates are provided with axle holes. The pin-shaft-roller set is set up between two side plates of the U-shaped holder. Symmetrical positions on the upper portion of the flange are provided with opening slots. After assembly, the U-shaped holder is located between two flanges. Two side plates are located inside the limiting slots in the flanges.

公开(公告)号：US09885330B1

公开(公告)日：2018-02-06

申请号：US15361017

申请日：2016-11-24

Applicant: Hangzhou XZB Tech Co.,Ltd

Inventor： Na Xu

IPC: F02M59/44 ,  F02M59/10

CPC classification number: F02M59/102 ,  F04B1/0426 ,  F04B1/0439 ,  F04B1/053 ,  F04B9/042

Abstract: A high-pressure fuel pump actuator used in an engine, which is used in a fuel injection system of an engine, is mounted on between a driving cam and a fuel pump plunger. The pump actuator includes a guide sleeve, a U-shaped holder, and a pin shaft roller set. The U-shaped holder is formed by stamping the steel plate integrally. The guide sleeve uses a special windowing manner. Both ends of the pin shaft do not need riveting. The structure of the present invention has less number of parts and integrated functions, which can notably reduce the entire weight, the inertial force, the friction, and the abrasion. The operation is steady. The efficiency of the engine is improved.

公开(公告)号：US10215201B2

公开(公告)日：2019-02-26

申请号：US14765038

申请日：2014-05-20

Applicant: Hangzhou XZB Tech Co., Ltd.

Inventor： Na Xu

IPC: F01L1/14 ,  F15B15/14 ,  F01L1/24 ,  F01L9/02 ,  F15B1/26

Abstract: A column type hydraulic tappet includes a housing; a plunger correspondingly installed in the housing; and a high pressure chamber for a hydraulic medium formed between the bottom face of the plunger and the bottom of the housing and is sealed by a check valve opening toward the high pressure chamber. The housing includes an external circumferential groove on the outer diameter for passing the hydraulic medium and an inner circumferential groove on the inner diameter for passing the hydraulic medium. One or more housing oil holes are disposed between the outer circumferential groove and the inner circumferential groove. The plunger includes a sealed hemisphere head portion, a shaft portion and a body portion. An indent neck portion between the head and shaft portions of the plunger has a wall thickness 105%-120% of the wall thickness of the other portions of the plunger.

公开(公告)号：US20130180606A1

公开(公告)日：2013-07-18

申请号：US13824207

申请日：2012-05-03

Applicant: Hua Dong

Inventor： Hua Dong

IPC: F15B13/043

CPC classification number: F15B13/043 ,  F16K31/0682 ,  F16K31/10 ,  Y10T137/7761

Abstract: The present invention relates to a valve, and more specially relates to a floating action type servo-valve used for fluid control, comprising a valve body, a torque motor, a pilot stage and a power stage control mechanism. An upper valve block, an intermediate baffle and a lower valve block are spliced by a fastener in the valve body. A torsion-bar spring of the torque motor passes through the center of a gag bit and is fixed to the valve body with a stand. A pilot stage revolving shaft and a power stage revolving stage are provided in a same central line, with a mating between the pilot stage revolving shaft and the upper valve block and a mating between the power stage revolving shaft and the lower valve block. The servo valve also comprises a shifting enlargement mechanism constitute by a shafting fork and a shafting lever, the rotation center of the shifting fork situating in the axis of the pilot stage revolving shaft and the rotation center of the shifting lever situating in the axis of torsion-bar spring, one end of the shifting lever being connected to the lower end of torsion-bar spring of torque motor and the other end of shifting lever being slidably connected to the shifting fork. The floating action type servo-valve is characterized by adjustable power stage output, better dynamic and static performances, less friction and flexible movement.

Abstract translation: 本发明涉及一种阀，更具体地涉及一种用于流体控制的浮动式伺服阀，包括阀体，扭矩电机，先导级和功率级控制机构。 上阀体，中间挡板和下阀块由阀体中的紧固件接合。 扭力马达的扭杆弹簧穿过堵头的中心，并用支架固定在阀体上。 先导级旋转轴和动力级旋转级设置在相同的中心线上，在先导级旋转轴和上阀块之间配合，并且在动力级旋转轴和下阀块之间配合。 伺服阀还包括由轴系叉和轴系杠杆构成的变速放大机构，变速叉的转动中心位于先导级转轴的轴线上，变速杆的旋转中心位于扭转轴线 变速杆的一端连接到扭矩马达的扭杆弹簧的下端，变速杆的另一端可滑动地连接到换档拨叉上。 浮动式伺服阀的特点是功率级输出可调，动态和静态性能更好，摩擦力更小，移动灵活。

公开(公告)号：US10287930B2

公开(公告)日：2019-05-14

申请号：US15795253

申请日：2017-10-27

Applicant: Hangzhou XZB Tech Co.,Ltd

Inventor： Na Xu ,  Haijun Ren

IPC: F01L1/18

Abstract: This invention provides a novel lightweight rocker arm frame and a forming process of a curved crown part thereof, including two sidewalls and two bottom plates. The two sidewalls are connected through the bottom plates respectively located at two ends. A ball socket protruded upwards and an oil hole are arranged at a bottom plate at one end, and a bottom surface of a bottom plate at the other end is a bearing surface. A pin shaft hole is formed in the middle of each sidewall without the bottom plates. According to the rocker arm frame disclosed by the invention, the strength of the structure can be ensured while light weight is realized. The production efficiency of the rocker arm frame is effectively improved, and the structure of the valve rod supporting position is improved.

公开(公告)号：US20190093522A1

公开(公告)日：2019-03-28

申请号：US15795253

申请日：2017-10-27

Applicant: Hangzhou XZB Tech Co.,Ltd

Inventor： Na XU ,  Haijun REN

IPC: F01L1/18

Abstract: This invention provides a novel lightweight rocker arm frame and a forming process of a curved crown part thereof, including two sidewalls and two bottom plates. The two sidewalls are connected through the bottom plates respectively located at two ends. A ball socket protruded upwards and an, oil hole are arranged at a bottom plate at one end, and a bottom surface of a bottom plate at the other end is a bearing surface. A pin shaft hole is formed in the middle of each sidewall without the bottom plates. According to the rocker arm frame disclosed by the invention, the strength of the structure can be ensured while light weight is realized. The production efficiency of the rocker arm frame is effectively improved, and the structure of the valve rod supporting position is improved.

公开(公告)号：US20170342867A1

公开(公告)日：2017-11-30

申请号：US15542391

申请日：2016-01-05

Applicant: HANGZHOU XZB TECH CO., LTD

Inventor： Na XU

IPC: F01L1/245

CPC classification number: F01L1/245 ,  F01L1/24 ,  F01L1/2405 ,  F01L2103/00

Abstract: A columnar-type hydraulic tappet, provided with a housing, a plunger moving axially with respect to the housing being mounted in an inner cavity of the housing, a high pressure cavity used for a hydraulic medium extending between a lower end surface of the plunger and a lower side of the housing, a first ring groove being arranged below a head portion of the plunger, a second ring groove being arranged at a central portion of the plunger, a plunger central wall being between the first ring groove and the second ring groove, the second ring groove being a concave wide ring groove, wherein at least one plunger oil inlet hole being arranged on the plunger concave wide ring groove or the plunger central wall, a bottom portion edge of the plunger oil inlet hole containing flanging facing towards an inner cavity of the plunger.

公开(公告)号：US09115729B2

公开(公告)日：2015-08-25

申请号：US13824207

申请日：2012-05-03

Applicant: Hua Dong

Inventor： Hua Dong

IPC: F16K11/074 ,  F16K31/06 ,  F16K31/124 ,  F15B13/043 ,  F16K31/10

CPC classification number: F15B13/043 ,  F16K31/0682 ,  F16K31/10 ,  Y10T137/7761

Abstract: The present invention relates to a valve, and a floating action type servo-valve used for fluid control, including a valve body, a torque motor, a pilot stage and a power stage control mechanism. An upper valve block, an intermediate block and a lower valve block are stacked and fastened by a fastener in the valve body. A torsion-bar spring of the torque motor passes through the center of an armature and is fixed to the valve body with a stand. A pilot stage revolving shaft and a power stage revolving stage are provided in a same central line, with a mating between the pilot stage revolving shaft and the upper valve block and a mating between the power stage revolving shaft and the lower valve block. The servo valve includes a shifting enlargement mechanism constitute by a shifting fork and a shifting lever.

Abstract translation: 本发明涉及一种阀，以及用于流体控制的浮动式伺服阀，包括阀体，扭矩电机，先导级和功率级控制机构。 上阀体，中间块和下阀块通过紧固件堆叠并紧固在阀体中。 扭力马达的扭杆弹簧通过衔铁的中心，并用支架固定在阀体上。 先导级旋转轴和动力级旋转级设置在相同的中心线上，在先导级旋转轴和上阀块之间配合，并且在动力级旋转轴和下阀块之间配合。 伺服阀包括通过换档叉和变速杆构成的变速放大机构。