公开(公告)号：US06314922B1

公开(公告)日：2001-11-13

申请号：US09360107

申请日：1999-07-23

申请人： Helmut Zimmermann ,  Werner Geyer ,  Jörg Schlossarczyk ,  Hans Nickel ,  Harald Schliemann ,  Gunter Stein ,  Peter Stücke ,  Bernhard Dürr ,  Axel Klimmek

发明人： Helmut Zimmermann ,  Werner Geyer ,  Jörg Schlossarczyk ,  Hans Nickel ,  Harald Schliemann ,  Gunter Stein ,  Peter Stücke ,  Bernhard Dürr ,  Axel Klimmek

IPC分类号： F01P704

CPC分类号： F02M35/1017 ,  B25F5/008 ,  B27B17/00 ,  F02B63/02 ,  F02B2075/025 ,  F02M35/10013 ,  F02M35/10262 ,  Y02T10/146

摘要： A hand-held working tool has a housing and an internal combustion engine arranged in the housing and comprising a crankshaft and an air filter. A tool is driven by the crankshaft of the internal combustion engine. A fan housing is attached to the engine housing and has an air inlet. A fan wheel is arranged in the fan housing and is driven by the crankshaft of the internal combustion engine to supply cooling air, sucked in through the air inlet, to the internal combustion engine. The fan housing has a bottom extending radially to the crankshaft. The bottom and a side of the fan wheel facing the bottom define a chamber in the fan housing. The bottom has a combustion air outlet. A combustion air channel is connected to the combustion air outlet and to the air filter. The combustion air outlet is axially supplying combustion air from the chamber through the combustion air channel into the air filter of internal combustion engine. The fan housing has a channel wall having a bottom portion connected to the face of the bottom remote from the fan wheel and covering the bottom partially to form a double-walled bottom. The end face portion of the combustion air channel is defined by the bottom and the bottom portion of the channel wall. In an alternative embodiment the combustion air channel is provided in a hollow beam of a support that supports the drive unit of the working tool.

摘要翻译： 一种手持式工具具有壳体和布置在壳体中的内燃机，包括曲轴和空气过滤器。 工具由内燃机的曲轴驱动。 风扇壳体附接到发动机壳体并具有进气口。 风扇轴设置在风扇壳体中，并由内燃机的曲轴驱动，以将通过空气入口吸入的冷却空气供给到内燃机。 风扇壳体具有径向延伸到曲轴的底部。 风扇轮的底部和面向底部的一侧限定了风扇壳体中的室。 底部有一个燃烧空气出口。 燃烧空气通道连接到燃烧空气出口和空气过滤器。 燃烧空气出口轴向地将来自腔室的燃烧空气通过燃烧空气通道供应到内燃机的空气过滤器中。 风扇壳体具有通道壁，该通道壁的底部连接到远离风扇叶的底部的表面，并部分地覆盖底部以形成双壁底部。 燃烧空气通道的端面部分由通道壁的底部和底部限定。 在替代实施例中，燃烧空气通道设置在支撑工作工具的驱动单元的支撑件的中空梁中。

公开(公告)号：US07131406B2

公开(公告)日：2006-11-07

申请号：US10347741

申请日：2003-01-17

申请人： Bernhard Dürr ,  Harald Schliemann ,  Jörg Schlossarczyk ,  Werner Geyer

发明人： Bernhard Dürr ,  Harald Schliemann ,  Jörg Schlossarczyk ,  Werner Geyer

IPC分类号： F02B25/14

CPC分类号： F02B33/04 ,  F02B2075/025

摘要： A two-cycle engine in a portable, manually-guided implement, such as a power chain saw, a cut-off machine, a brush cutter, or the like, is provided. The cylinder has a combustion chamber that is delimited by a reciprocating piston that via a connecting rod drives a crankshaft that is mounted in a crankcase so as to be rotatable about a crankshaft axis. The cylinder has an outlet for conveying exhaust gases out of the combustion chamber, with the outlet having an axis of the channel thereof. The cylinder also has an inlet for supplying a fuel/air mixture to the crankcase. By means of at least two transfer channels, the fuel/air mixture is conveyed out of the crankcase and into the combustion chamber, with the transfer channels being disposed symmetrically relative to the axis of the channel of the outlet. When viewed in the direction of the longitudinal axis of the cylinder, the axis of the channel of the outlet is disposed at an angle of less than 90° relative to the longitudinal central axis of the crankshaft.

公开(公告)号：US06851403B2

公开(公告)日：2005-02-08

申请号：US09945230

申请日：2001-08-31

申请人： Bernhard Dürr ,  Bruhns Imke ,  Jürgen Häberlein ,  Harald Schliemann ,  Jörg Schlossarczyk ,  Manfred Rabis

发明人： Bernhard Dürr ,  Bruhns Imke ,  Jürgen Häberlein ,  Harald Schliemann ,  Jörg Schlossarczyk ,  Manfred Rabis

IPC分类号： F01L1/12 ,  F01L1/18 ,  F01L1/20 ,  F02B63/02 ,  F02B75/02 ,  F02B75/16

CPC分类号： F02B75/16 ,  F01L1/18 ,  F01L1/20 ,  F02B63/02 ,  F02B2075/027 ,  F02B2275/34

摘要： A valve drive having a rocker arm mounted on a cylinder head is provided. One end of the rocker arm is actuated by a push rod to actuate a valve stem of a poppet valve that engages the other end of the rocker arm, which is pivotably held between its ends on a support pin that extends into the cylinder head, with a spherical mounting being provided between the support pin and the rocker arm. Provided on that side of the rocker arm remote from the cylinder head is a bolt head for adjusting the bearing spacing between the rocker arm and the cylinder head for adjusting valve play. To prevent unintended adjustment of the bolt head, the latter cooperates with a rotation preventing element that has an arresting portion that engages the bolt head, and a support portion that conveys the adjustment moment away.

摘要翻译： 提供具有安装在气缸盖上的摇臂的阀驱动器。 摇臂的一端由推杆致动，以启动提升阀的阀杆，其接合摇臂的另一端，摇臂的另一端可枢转地保持在其端部之间延伸到气缸盖中的支撑销上， 在支撑销和摇臂之间设置有球面安装件。 在靠近气缸盖的摇臂的那一侧设置有用于调节摇臂和气缸盖之间的轴承间距的螺栓头，用于调节阀的游隙。 为了防止螺栓头的意外调整，后者与具有接合螺栓头的止动部分的旋转阻止元件和传递调节力矩的支撑部分配合。

公开(公告)号：US06736240B2

公开(公告)日：2004-05-18

申请号：US09944764

申请日：2001-08-31

申请人： Bernhard Dürr ,  Harald Schliemann ,  Manfred Rabis ,  Jörg Schlossarczyk

发明人： Bernhard Dürr ,  Harald Schliemann ,  Manfred Rabis ,  Jörg Schlossarczyk

IPC分类号： F01M100

CPC分类号： F01M9/10 ,  F01M3/00

摘要： A cam drive is provided for a valve control of a mixture-lubricated internal combustion engine that has a cylinder, and a cylinder head in which is disposed a poppet valve which is actuated by a pivotable rocker arm. Mounted in a cam chamber is a control cam that is driven by the crankshaft of the engine and on the cam path of which rests a drag lever that transfers the cam lift to the rocker arm. To achieve a reliable mixture lubrication, a flow guidance element is disposed in the annular chamber between the peripheral wall of the cam chamber and the maximum diameter of the path of a cam nose. The flow guidance element is provided with a flow edge that is disposed adjacent to the drag lever in the vicinity of the path diameter of the cam nose.

摘要翻译： 提供一种凸轮驱动器，用于具有气缸的混合物润滑的内燃机的阀控制，以及气缸盖，其中设置有由可枢转的摇臂驱动的提升阀。 安装在凸轮室中的是由发动机的曲轴驱动的控制凸轮，并且在其凸轮路径上设有将凸轮升程转移到摇臂的牵引杆。 为了实现可靠的混合润滑，流动引导元件设置在凸轮室的周壁和凸轮鼻的路径的最大直径之间的环形室中。 流动引导元件设置有在靠近凸轮鼻的路径直径附近设置在牵引杆附近的流动边缘。

公开(公告)号：US06715212B2

公开(公告)日：2004-04-06

申请号：US10162906

申请日：2002-06-06

申请人： Bernhard Dürr ,  Harald Schliemann ,  Jörg Schlossarczyk ,  Manfred Rabis

发明人： Bernhard Dürr ,  Harald Schliemann ,  Jörg Schlossarczyk ,  Manfred Rabis

IPC分类号： F01P102

CPC分类号： F02M35/1017 ,  B27B17/08 ,  F02B63/02 ,  F02B75/16 ,  F02B2075/027 ,  F02M35/024

摘要： A portable handheld work apparatus such as a motor-driven chain saw includes a housing (6) of a drive unit (2). The following are mounted in the housing (6): an internal combustion engine (3), a carburetor (4) for fuel metering and an air filter (5) as well as a fuel tank (8). The air filter (5) is mounted ahead of the carburetor in the flow direction of the fresh air flow. A largest possible filter action is obtained with a compact configuration in that a housing (10) of the air filter (5) lies at least partially in a space between the carburetor (4) and the fuel tank (8).

摘要翻译： 诸如电动链锯的便携式手持式工作装置包括驱动单元（2）的壳体（6）。 以下安装在壳体（6）中：内燃机（3），用于燃料计量的化油器（4）和空气过滤器（5）以及燃料箱（8）。 空气过滤器（5）在新鲜空气流的流动方向上安装在化油器的前面。 通过紧凑的结构获得最大可能的过滤作用，其中空气过滤器（5）的壳体（10）至少部分位于化油器（4）和燃料箱（8）之间的空间中。

公开(公告)号：US07168132B2

公开(公告)日：2007-01-30

申请号：US10097587

申请日：2002-03-15

申请人： Bernhard Dürr ,  Michael Tinius ,  Jörg Schlossarczyk ,  Günter Wolf ,  Martin Schif ,  Werner Geyer ,  Michael März ,  Jürgen Häberlein

发明人： Bernhard Dürr ,  Michael Tinius ,  Jörg Schlossarczyk ,  Günter Wolf ,  Martin Schif ,  Werner Geyer ,  Michael März ,  Jürgen Häberlein

IPC分类号： A47B95/02

CPC分类号： B27B17/0008 ,  A47L9/322 ,  B25F5/02 ,  B25F5/026 ,  Y10T16/44 ,  Y10T16/466

摘要： The invention relates to a portable handheld work apparatus including a chain saw, a vacuum/blower apparatus or the like. The work apparatus has a handle (2) for carrying and guiding the work apparatus (1). Thumb supports (4, 5) are provided on both sides with respect to the longitudinal axis (3) of the handle (2).

摘要翻译： 本发明涉及包括链锯，真空/鼓风机装置等的便携式手持式工作装置。 工作装置具有用于承载和引导工作装置（1）的把手（2）。 拇指支撑件（4,5）相对于手柄（2）的纵向轴线（3）设置在两侧。

公开(公告)号：US06539911B2

公开(公告)日：2003-04-01

申请号：US09944762

申请日：2001-08-31

申请人： Bernhard Dürr ,  Harald Schliemann ,  Reinhard Friedrich ,  Manfred Rabis

发明人： Bernhard Dürr ,  Harald Schliemann ,  Reinhard Friedrich ,  Manfred Rabis

IPC分类号： F01M100

CPC分类号： F01M9/101 ,  F01M1/04 ,  F01M3/00 ,  F02B2075/027

摘要： A cam drive is provided for a valve-controlled mixture-lubricated internal combustion engine having a cylinder in which is formed a combustion chamber that is delimited by the cylinder wall, a piston and a cylinder head. Disposed in the cylinder head are poppet valves, the respective valve shafts of which are driven via a pivotable rocker arm from a valve control that includes a control cam on the surface of which rests a contact lever that transfers cam lift to one end of the rocker arm. To ensure good lubrication of the cam drive even at high speeds, the control cam is rotatably mounted in the vicinity of the cylinder wall, in which is formed a through-bore. The first open end of the through-bore is disposed in the cylinder bore at the level of the piston in its lower dead center position, while the second open end opens into the cam chamber in the vicinity of the control cam.

公开(公告)号：US06546905B2

公开(公告)日：2003-04-15

申请号：US09944765

申请日：2001-08-31

申请人： Bernhard Dürr ,  Harald Schliemann ,  Manfred Rabis

发明人： Bernhard Dürr ,  Harald Schliemann ,  Manfred Rabis

IPC分类号： F01L118

CPC分类号： F02B63/02 ,  B27B17/0008 ,  F01L1/024 ,  F01L1/12 ,  F01L1/18 ,  F01L1/20 ,  F02B2075/027

摘要： A valve drive mechanism is provided for an internal combustion engine, especially a four-stroke engine in a power chain saw. The implement housing is spanned by a front handle, the tubular grip of which is adjacent to the cylinder head of the engine and extends from one longitudinal side of the implement to the other longitudinal side thereof. A rocker arm of a valve control is pivotably mounted on the cylinder head between the ends of the rocker arm, with the rocker arm being pivotable about a pivot axis disposed transverse to the rocker arm. Push rods of a control mechanism engage one end of the rocker arm to actuate a poppet valve, on the valve stem of which the other end of the rocker arm acts. To be able to guide the tubular grip close to the center of gravity of the implement, the longitudinal axis of the rocker arm is disposed approximately parallel to the adjacent portion of the tubular grip.

公开(公告)号：US06749180B2

公开(公告)日：2004-06-15

申请号：US10369245

申请日：2003-02-14

申请人： Bernhard Dürr ,  Manfred Rabis ,  Werner Geyer

发明人： Bernhard Dürr ,  Manfred Rabis ,  Werner Geyer

IPC分类号： F02M2303

CPC分类号： F02M17/04 ,  F02B63/02 ,  F02B2075/025 ,  F02M23/03 ,  Y02T10/146 ,  Y10S261/01

摘要： A diaphragm carburetor is provided for an internal combustion engine that operates with scavenging air, especially a two-cycle engine in a manually-guided implement. The carburetor has an intake channel portion in which is disposed a butterfly valve that is rotatably held via a shaft and in the vicinity of which fuel-supplying channels open into the intake channel portion. The channels are supplied from a fuel-filled regulating chamber that is formed on a longitudinal side of the intake channel portion in the carburetor housing and is separated by a regulating diaphragm from a compensation chamber. The carburetor has at least one air channel that supplies additional combustion air and that has an air valve that is rotatably held via a shaft. The butterfly valve and the air valve can be brought from a closed position, in which the butterfly valve or the air valve only insignificantly influence the flow in the intake channel portion or in the air channel, into a closed position in which the intake channel portion or the air channel are substantially closed off in an airtight manner, and in an opening direction from the closed position into the opened position. The air valve is coupled to the butterfly valve via a coupling mechanism that compensates for axial and radial tolerances and includes a spring.

摘要翻译： 一种用于内燃机的隔膜式化油器，该内燃机与清扫空气操作，特别是在手动工具中的两冲程发动机。 化油器具有进气通道部分，其中设置有蝶阀，该蝶阀经由轴可旋转地保持，并且其附近的燃料供给通道通向进气通道部分。 通道由燃料填充的调节室供给，该调节室形成在化油器壳体中的进气通道部分的纵向侧，并且通过调节膜片与补偿室隔开。 化油器具有至少一个空气通道，其供应额外的燃烧空气，并且具有通过轴可旋转地保持的空气阀。 蝶阀和空气阀可以从闭合位置进入，其中蝶阀或空气阀仅对进气通道部分或空气通道中的流动无影响地进入关闭位置，在关闭位置，进气通道部分 或者空气通道基本上以气密的方式封闭，并且在从闭合位置到打开位置的打开方向上。 空气阀通过耦合机构联接到蝶阀，该联接机构补偿轴向和径向公差，并且包括弹簧。

公开(公告)号：US06375171B1

公开(公告)日：2002-04-23

申请号：US09658132

申请日：2000-09-08

申请人： Helmut Zimmermann ,  Horst Otterbach ,  Bernhard Dürr ,  Manfred Rabis ,  Karl-Heinz Klöpfer ,  Klaus Martin Uhl ,  Günter Wolf ,  Rebekka Helfen

发明人： Helmut Zimmermann ,  Horst Otterbach ,  Bernhard Dürr ,  Manfred Rabis ,  Karl-Heinz Klöpfer ,  Klaus Martin Uhl ,  Günter Wolf ,  Rebekka Helfen

IPC分类号： F16M100

CPC分类号： B25F5/006 ,  B27B17/0033 ,  F16F1/12 ,  F16F1/122 ,  F16F15/067

摘要： The invention relates to a vibration damper between a housing (4), which holds an internal combustion engine, and a handle (3) fixed on the housing (4). The handle (3) is for holding and guiding the motor-driven chain saw (2) during use thereof. The vibration damper (1) is a coil spring (5) which is fixed at a first end (10) thereof with an attachment element (7) to the handle (3) and, at a second end (20), the coil spring is fixed with a further attachment element (30) to the housing. A part turn of the end (10, 20) of the coil spring (5) is held form-tightly to the attachment element (7, 30) in the direction of its longitudinal center axis (25). To provide a torsion-free assembly of the coil spring, it is provided that the coil spring (5) can be assembled from one of its ends (20) between the handle (3) and the housing (4) and be secured at least at one of its ends (20) to the attachment element (30) against a rotational movement in the peripheral direction.

摘要翻译： 本发明涉及一种在保持内燃机的壳体（4）和固定在壳体（4）上的手柄（3）之间的减振器。 手柄（3）用于在使用时保持和引导电动链锯（2）。 减震器（1）是螺旋弹簧（5），其在其第一端（10）处固定有与把手（3）相连的附接元件（7），并且在第二端（20）处，螺旋弹簧 被固定有另外的附接元件（30）到壳体。 螺旋弹簧（5）的端部（10,20）的一部分转动沿其纵向中心轴线（25）的方向紧密地保持在附接元件（7,30）上。 为了提供螺旋弹簧的无扭转组件，设置螺旋弹簧（5）可以从手柄（3）和壳体（4）之间的端部（20）之一组装并且至少被固定 在其一个端部（20）处连接到附接元件（30），以防止在周向方向上的旋转运动。