公开(公告)号：US07458493B2

公开(公告)日：2008-12-02

申请号：US11371910

申请日：2006-03-10

申请人： Tomomasa Nishikawa ,  Hiroto Inagawa

发明人： Tomomasa Nishikawa ,  Hiroto Inagawa

IPC分类号： B25C1/04

CPC分类号： B25C1/08

摘要： A combustion type power tool capable of restraining reduction in output power due to lowering of combustion efficiency. A specific space within a combustion-chamber frame is enlarged. The specific space contains a specific region where high turbulence occurs in a combustion chamber at which a fuel is ignited. The enlargement is made by providing an enlarged distance between a rotation shaft of the fan and an inner wall of the combustion-chamber frame. When the turbulent combustion occurring at the specific region is expanded in the combustion chamber, flame propagation contour of the turbulent combustion reaches the wall of the combustion-chamber frame and ribs at a delayed timing. Therefore, after the turbulent combustion is sufficiently promoted, the flame reaches the combustion-chamber frame and the ribs. In other words, the flame does not reach the combustion-chamber frame and the ribs at the initial stage of turbulent combustion. Thus, combustion heat at the initial stage of turbulent combustion is not robbed, but the combustion is promoted. Efficient power generation from the fuel is achievable without lowering combustion efficiency.

摘要翻译： 一种能够抑制由于燃烧效率降低导致的输出功率降低的燃烧式电动工具。 燃烧室框架内的特定空间被扩大。 特定空间包含在燃烧室中燃烧高的湍流发生的特定区域。 通过在风扇的旋转轴和燃烧室框架的内壁之间提供放大的距离来进行放大。 当在燃烧室内发生在特定区域发生的湍流燃烧时，湍流燃烧的火焰传播轮廓在延迟的时间到达燃烧室框架的壁和肋条。 因此，在充分促进湍流燃烧之后，火焰到达燃烧室框架和肋条。 换句话说，火焰在湍流燃烧的初始阶段没有到达燃烧室框架和肋条。 因此，在湍流燃烧的初始阶段的燃烧热不会被抢走，但是燃烧是促进的。 可以在不降低燃烧效率的情况下实现来自燃料的高效发电。

公开(公告)号：US07316209B2

公开(公告)日：2008-01-08

申请号：US11802956

申请日：2007-05-29

申请人： Yoshitaka Akiba ,  Haruhisa Fujisawa ,  Tomomasa Nishikawa

发明人： Yoshitaka Akiba ,  Haruhisa Fujisawa ,  Tomomasa Nishikawa

IPC分类号： F02B71/00

CPC分类号： B25C1/123

摘要： A combustion-type power tool includes a housing, a cylinder disposed, a piston, and a cylinder head disposed at an end of the housing and having a wall portion extending in a direction perpendicular to an axial direction, the wall portion having an opening. A motor is disposed at the cylinder head and includes a motor body and a drive shaft extending from the motor body into a combustion chamber through the opening of the wall portion of the cylinder head, a fan is connected to the drive shaft to be rotatable within the combustion chamber, and an elastic member is disposed at the opening of the wall portion and has a sleeve portion extending in the axial direction. The sleeve portion has a through-hole through which the drive shaft extends, and an inner surface of the through-hole is tapered with respect to an outer surface of the drive shaft.

摘要翻译： 一种燃烧式电动工具包括壳体，设置的气缸，活塞和设置在壳体的端部并具有沿与轴向垂直的方向延伸的壁部的气缸盖，壁部具有开口。 电动机设置在气缸盖上，包括电动机主体和驱动轴，该电动机主体和驱动轴通过气缸盖的壁部分的开口从电动机主体延伸到燃烧室，风扇连接到驱动轴上以在内部可转动 燃烧室和弹性构件设置在壁部的开口处并且具有沿轴向延伸的套筒部。 套筒部分具有通孔，驱动轴穿过该通孔，并且通孔的内表面相对于驱动轴的外表面是锥形的。

公开(公告)号：US07305940B2

公开(公告)日：2007-12-11

申请号：US11356102

申请日：2006-02-17

申请人： Tomomasa Nishikawa ,  Yasuki Ohmori ,  Shinki Ohtsu ,  Kunio Yamamoto ,  Yoshitaka Akiba ,  Haruhisa Fujisawa

发明人： Tomomasa Nishikawa ,  Yasuki Ohmori ,  Shinki Ohtsu ,  Kunio Yamamoto ,  Yoshitaka Akiba ,  Haruhisa Fujisawa

IPC分类号： B25C1/08

CPC分类号： B25C1/08

摘要： In the combustion-type power tool, a first shelter wall and a second shelter wall are disposed to partially surround an area between an ignition plug and an ignition ground. Two gaps are provided between the first and second shelter walls. The first shelter wall extends radially outwardly from an outer peripheral surface of a motor boss, and also protrudes from an end face in an axial direction of a fan shaft. The first shelter wall has a lower end surface inclined such that an axial length between the end face and the lower end surface is gradually reduced toward radially outer end of the first shelter wall.

摘要翻译： 在燃烧式电动工具中，设置第一遮蔽壁和第二遮蔽壁以部分地围绕火花塞和点火地之间的区域。 在第一和第二遮蔽壁之间设置两个间隙。 第一遮蔽壁从电动机凸台的外周面径向向外延伸，并且也从风扇轴的轴向的端面突出。 第一遮蔽壁具有倾斜的下端面，使得端面和下端面之间的轴向长度朝向第一遮蔽壁的径向外端逐渐减小。

公开(公告)号：US07293541B2

公开(公告)日：2007-11-13

申请号：US11356105

申请日：2006-02-17

申请人： Tomomasa Nishikawa ,  Haruhisa Fujisawa ,  Shinki Ohtsu

发明人： Tomomasa Nishikawa ,  Haruhisa Fujisawa ,  Shinki Ohtsu

IPC分类号： B25C1/08

CPC分类号： B25C1/08

摘要： A spark is shot between an ignition point of an ignition plug and an ignition ground. The spark is shot from an acute corner of a core of the ignition plug. A tip end of the core has an acute angle of not more than 45 degrees. With this arrangement, an emitting point of the spark can be concentrated to the tip end of the core. In order to reduce a thermal capacity of the ignition ground so as to enhance ignitability, a side opposite to the spark seating face of the ignition ground is tapered to provide an angle. Further, the ignition ground has an apex end providing an angle which is not more than 45 degrees. Because of the apex portion, thermal capacity of the ignition ground can be reduced and an acute angle can be realized to concentrate spark receiving point at the apex portion. As a result, ignitability can be enhanced.

摘要翻译： 在火花塞的点火点和点火地之间发生火花。 火花塞从火花塞芯的一个急剧拐角射出。 芯的尖端具有不大于45度的锐角。 通过这种布置，火花的发射点可以集中到芯的尖端。 为了降低点火地的热容量以提高点火性，与点火地面的火花放置面相对的一侧是锥形的，以提供角度。 此外，点火地具有提供不超过45度的角度的顶端。 由于顶点部分，可以减少点火地面的热容量，并且可以实现锐角以将火花塞接收点集中在顶部。 因此，可以提高点火性。

公开(公告)号：US20070163409A1

公开(公告)日：2007-07-19

申请号：US11623766

申请日：2007-01-17

申请人： Tomomasa Nishikawa ,  Kenichi Matsunaga

发明人： Tomomasa Nishikawa ,  Kenichi Matsunaga

IPC分类号： B26D1/18

CPC分类号： B23D59/006 ,  B23D45/048 ,  Y10T83/7697 ,  Y10T83/7763 ,  Y10T83/7793

摘要： A miter saw capable of reducing scattering amount of cutting chips at a terminal phase of cutting operation. The miter saw includes a base section for supporting a workpiece, a cutting section, and a support section for supporting the cutting section. The support section includes a slide support part extending from the base section, and a pivot support part for pivotally movably supporting the cutting section. The cutting section includes a cutting chip inflow part. A guard extends from the slide support part. The guard has a slope portion for guiding cutting chips toward the inflow part. The slope portion is positioned on an extension of an intersection line defined between the base section and a saw blade and is movable in the direction of the intersection line.

摘要翻译： 一种能够在切割操作的最终阶段减少切屑的散射量的斜切锯。 斜切锯包括用于支撑工件的基部，切割部和用于支撑切割部的支撑部。 支撑部分包括从基部延伸的滑动支撑部分和用于可枢转地可移动地支撑切割部分的枢轴支撑部分。 切割部分包括切屑流入部分。 护罩从滑动支架部分延伸。 护罩具有用于将切屑朝向流入部引导的倾斜部。 斜坡部位于限定在基部和锯片之间的交线的延伸部上，并且能够在交叉线的方向上移动。

公开(公告)号：US07171997B2

公开(公告)日：2007-02-06

申请号：US10845077

申请日：2004-05-14

申请人： Tomomasa Nishikawa ,  Akira Onose ,  Shinki Ohtsu

发明人： Tomomasa Nishikawa ,  Akira Onose ,  Shinki Ohtsu

IPC分类号： B27C5/10

CPC分类号： B23Q11/127 ,  B27C5/10 ,  H02K7/02 ,  H02K7/145 ,  H02K9/06 ,  Y02E60/16 ,  Y10T409/304088 ,  Y10T409/306608

摘要： A compact and light-weight portable electric router produced at a low cost and capable of providing high cutting efficiency with low noise. A radial fan includes a cylindrical hub functioning as an attachment portion to a motor shaft, a plurality of fan blades having parts connecting to the hub, and a ring like guide section connected to the hub through the fan blades. An annular weight is connected to the guide section at a radially outer side of the guide section. The weight serves as a restriction section for restricting backflow of air from a discharge side to a motor side.

摘要翻译： 一种紧凑轻便的便携式电路由器，以低成本生产，能够以低噪声提供高切割效率。 径向风扇包括用作与电动机轴的连接部的圆筒形毂，具有连接到轮毂的部件的多个风扇叶片和通过风扇叶片连接到轮毂的环状导向部。 环形重物在引导部分的径向外侧连接到引导部分。 该重量作为用于限制空气从排出侧向马达侧的回流的限制部。

公开(公告)号：US07103979B2

公开(公告)日：2006-09-12

申请号：US10688909

申请日：2003-10-21

申请人： Kenichirou Yoshida ,  Hideyuki Tanimoto ,  Tomomasa Nishikawa ,  Shinji Takano ,  Takuma Nonaka ,  Kenji Niwa ,  Teruo Imai ,  Satoshi Shimada

发明人： Kenichirou Yoshida ,  Hideyuki Tanimoto ,  Tomomasa Nishikawa ,  Shinji Takano ,  Takuma Nonaka ,  Kenji Niwa ,  Teruo Imai ,  Satoshi Shimada

IPC分类号： B23D47/02

CPC分类号： B23Q11/005 ,  B23D59/006 ,  B27B9/00

摘要： Fanned air generated by a fan to cool a motor is discharged from a housing through fanned air discharge ports toward an opening formed in a base. The fanned air discharged toward the opening is then introduced into a groove in fluid communication with the opening. The groove is formed in a bottom surface of the base and has an open side at a front side of the base. The fanned air is then discharged from the front side of the base, blowing off saw dust on a cutting object so as to prevent dust from accumulating on a marking line on the cutting object.

摘要翻译： 由风扇产生的用于冷却电动机的扇形空气通过扇形空气排出口从形成在基座中的开口排出。 然后将朝向开口排出的扇形空气引入到与开口流体连通的凹槽中。 槽形成在基座的底面上，并且在基座的前侧具有开口侧。 扇形空气然后从基座的前侧排出，吹出切割物体上的锯屑，以防止灰尘积聚在切割物体上的标记线上。

公开(公告)号：US20060186165A1

公开(公告)日：2006-08-24

申请号：US11356102

申请日：2006-02-17

申请人： Tomomasa Nishikawa ,  Yasuki Ohmori ,  Shinki Ohtsu ,  Kunio Yamamoto ,  Yoshitaka Akiba ,  Haruhisa Fujisawa

发明人： Tomomasa Nishikawa ,  Yasuki Ohmori ,  Shinki Ohtsu ,  Kunio Yamamoto ,  Yoshitaka Akiba ,  Haruhisa Fujisawa

IPC分类号： B25C1/14

CPC分类号： B25C1/08

摘要： In the combustion-type power tool, a first shelter wall and a second shelter wall are disposed to partially surround an area between an ignition plug and an ignition ground. Two gaps are provided between the first and second shelter walls. The first shelter wall extends radially outwardly from an outer peripheral surface of a motor boss, and also protrudes from an end face in an axial direction of a fan shaft. The first shelter wall has a lower end surface inclined such that an axial length between the end face and the lower end surface is gradually reduced toward radially outer end of the first shelter wall.

摘要翻译： 在燃烧式电动工具中，设置第一遮蔽壁和第二遮蔽壁以部分地围绕火花塞和点火地之间的区域。 在第一和第二遮蔽壁之间设置两个间隙。 第一遮蔽壁从电动机凸台的外周面径向向外延伸，并且也从风扇轴的轴向的端面突出。 第一遮蔽壁具有倾斜的下端面，使得端面和下端面之间的轴向长度朝向第一遮蔽壁的径向外端逐渐减小。

公开(公告)号：US20060042574A1

公开(公告)日：2006-03-02

申请号：US11209740

申请日：2005-08-24

申请人： Tomomasa Nishikawa ,  Haruhisa Fujisawa ,  Shinki Ohtsu

发明人： Tomomasa Nishikawa ,  Haruhisa Fujisawa ,  Shinki Ohtsu

IPC分类号： F02B71/00 ,  F02P5/00

CPC分类号： B25C1/08 ,  F02D2400/06 ,  F02P3/08

摘要： A combustion type power tool having a combustion chamber in which a fan is rotatably provided and an ignition plug is exposed. A combustible gas and air are mixed together by the fan, and the mixture is ignited by a spark generated at the ignition plug. As a result of combustion, gas expansion occurs to permit a piston and a driver blade to move for driving a fastener into a workpiece. A spark energy is set in a range of from 0.04 J to 0.08 J.

摘要翻译： 一种具有燃烧室的燃烧式动力工具，其中风扇可旋转地设置并且火花塞被暴露。 可燃气体和空气通过风扇混合在一起，并且混合物被火花塞产生的火花点燃。 作为燃烧的结果，发生气体膨胀以允许活塞和驱动器叶片移动以将紧固件驱动到工件中。 火花能量设定在0.04J〜0.08J的范围内。

公开(公告)号：US20060006207A1

公开(公告)日：2006-01-12

申请号：US11175176

申请日：2005-07-07

申请人： Yoshitaka Akiba ,  Haruhisa Fujisawa ,  Tomomasa Nishikawa

发明人： Yoshitaka Akiba ,  Haruhisa Fujisawa ,  Tomomasa Nishikawa

IPC分类号： B25C1/12 ,  F02B71/00

CPC分类号： B25C1/123

摘要： A combustion type power tool having an arrangement avoiding direct striking of a drive shaft against a cylinder head when combustion pressure is exerted. A motor is disposed at the cylinder head and includes a motor body and a drive shaft extending in an axial direction and protruding into a combustion chamber. A fan is connected to the drive shaft to be rotatable within the combustion chamber. A buffer piece made from an elastic material is supported to the cylinder head. The buffer piece is movable relative to the cylinder head in a direction substantially perpendicular to the axial direction. The buffer piece is formed with a through-hole through which the drive shaft extends.

摘要翻译： 一种燃烧式电动工具，其具有当施加燃烧压力时避免驱动轴直接撞击气缸盖的装置。 电动机设置在气缸盖上，包括电动机主体和沿轴向延伸并突出到燃烧室中的驱动轴。 风扇连接到驱动轴以在燃烧室内旋​​转。 由弹性材料制成的缓冲件支撑在气缸盖上。 缓冲件可以在与轴向大致垂直的方向上相对于气缸盖移动。 缓冲片形成有驱动轴延伸穿过的通孔。