Power mower

[Detailed Description of the Invention]

the present invention -- a crank shaft -- vertical -- it is related with improvement of the power type lawn mower carrying a perpendicular engine. carrying an engine and rotating a cutter braid in the level surface by making this into the source of power -- power -- or practical use is presented with the power type lawn mower it runs by hand-pushed. Since the hand of cut differs as an engine of the above power type lawn mower between the cutter braids rotated in the level surface when a crank shaft is a horizontal level, A directional change transmission mechanism is needed between a cutter braid and a crank shaft, complication of structure, the increase in part mark, and enlargement are caused, and it is not desirable. therefore, crank shaft vertical -- if a perpendicular place tone vertical engine is used, since the crank shaft is perpendicular, a cutter braid can be directly connected with the lower end of this, directional change and a transmission mechanism are not needed, but the above-mentioned inconvenience can be canceled. By the way, since this conventional seed lawn mower was carrying out loading connection of the engine at Rigid to the cutter braid housing which is provided with a wheel, attaches grass storage Bat and is provided with the handle for operation, engine vibration got across to the handle via the housing, and was not preferred on operation feeling. With the vertical engine, the cylinder especially turned to order or right and left, it was provided horizontally, engine primary force of inertia occurred in order or a horizontal direction in the rotation in the level surface of a crank shaft, this got across to the handle via the housing as vibration, operation feeling was spoiled, and an improvement was desired. The place which the present invention was made that the above should be improved and is made into the object, Engine vibration is intercepted as much as possible between housings, oscillating transfer for a housing and a handle is controlled as much as possible, and it excels in operation feeling, and a prevention-of-noise top is also advantageous, and it is in providing the power type lawn mower carried out as [ plan / with simple composition / the above ]. in order to achieve the above object, the cylinder of the present invention is level -- a crank shaft -- vertical -- connecting with the lower end part of a perpendicular vertical engine directly the cutter braid rotated in the level surface While carrying out loading support via the elastic body which covered the cutter braid, made the engine face on a housing provided with a wheel, a handle, etc., and allocated the engine on the housing at the method of the outside of the direction of the circumference of the crank shaft, Let it be a gist to have made it combine with the circumference of the pivot by the pivot which allocated the housing and the engine so that it might intersect perpendicularly to a crank shaft axis, so that relative rotation is possible. next, suitable 1 example of the present invention -- an accompanying drawing -- therefore, it explains in full detail. Drawing 1 is a side view of power type lawn mower 1, and 2 shows the housing which serves as the body -- the four corners of this -- wheel 3 -- having ...... wheel 3 -- even if ...... drives under engine power, it may consist of wheels that it should run by hand driving operation. On the rear of housing 2, it has handle 4 which extended to the method of Gokami, and in the example, grass storage Bat 5 is allocated in the one side part of handle 4, the back end upper part is Engagement(ed) in the handle one side part upper part, and Bat connects the front end with discharge part 201 of cutting Turf that I took which protruded on the circumference slippage part upper part of housing 2. Power unit 6 is allocated on housing 2, a figure covers the outside of this with cover 601, and it equips the power unit rear with fuel tank 602. Drawing 2 is an important section fracture longitudinal section showing the mounting structure of engine 7 and housing 2 which make the main part of power unit 6, Cylinder part 701 is horizontally allocated so that the axis of cylinder part 701 may turn to engine 7 to order or a horizontal direction, Crankcases 702 are formed successively so that it may turn to the base of cylinder part 701 below, In order to show a support-at-one-end crank shaft type by a diagram, the upper end part of crankcase 702 is covered with cover 703 with a slanting joined part, crankcase 702 is provided with extension case part 704 which is projected below and which hung, and mounting flange part 705 of the diameter of a large is formed in the lower end part of case part 704. This case part 704 is made to face on the central part on housing 2, and through-hole 202 is arranged lengthwise by the central part of housing 2, Skirt part 204 hangs in the circumference part of upper wall 203, and it is constituted so that double partition 205,206 may be provided and cut inside this and guide duct 207 to discharge part 201 of Turf that I took may be provided. In cylinder part 701, an unillustrated piston is horizontally fitted in slidably like known, on the other hand -- crank shaft 706 -- the inside of crankcase 702 and case 704 -- vertical -- storage allocation is carried out so that it may become perpendicular Crank shaft 706 connects with a piston the pin part provided in the radial outer edge slippage part of web 707 of a upper end by the support-at-one-end formula via Conrogram 708, and supports it by bearing 710,710 provided so that crank shaft axis part 709 which hung perpendicularly from web 707 might be estranged up and down. Lower end part 711 of axial part 709 of crank shaft 706 is hung in flange 705 lower part of case 705, Connecting with holder 801 of cutter braid 8 stored in the lower part of housing 2 via joint axis 712 which hung so that a lower end part might be Longitudinal(ed) to longitudinal hole 202 of a housing, by this, it will rotate with engine power in the level surface, and braid 8 will do grass-cutting work. Above, elastic body 9, specifically mount rubber, is interposed between the central part and flange 705 of upper wall 203 of housing 2, and flange 705 which makes the attachment base of engine 7 which faces on upper wall 203 of a housing via the rubber 9 is connected. Even if rubber 9 combines the seat board which the upper end was made the circumference slippage subordinate side of flange 705 of engine 7 with a glow etc., it bound it to it, and was formed in the lower end on the upper wall of housing 2, Or this contrary also forms a seat board in the upper and lower sides of rubber, combines each with flange 705 and housing upper wall 203, and carries out attachment support of the engine 7 via elastic body 9 on housing 2. Even if it provides multiple above rubber 9 radiately focusing on crank shaft axis part 709, it may use the thing of ring shape concentrically focusing on this axial part 709. The suspension protrusion of the attachment bracket part 713 is carried out in the symmetrical position on the circumference of flange 705, On the other hand into the portion to which upper wall 203 of housing 2 corresponds, the bracket part 713 and bracket part 205 which A lap to inner and outside are Launch(ed), and through and both sides are supported pivotally for pin 10 between bracket parts 713,205. This pin 10 is horizontally provided so that it may intersect perpendicularly with the axis of crank shaft axis part 709. Next, the operation effect is explained in full detail. As shown in Drawing 2, constituted engine 7 is supported pivotally with pin 10 provided in the direction which intersects perpendicularly with a crank shaft axis at housing 2. Then, oscillating interception can be effectively demonstrated by setting up so that it may be made to generate so that the direction of the primary force of inertia which occurs from an engine may be made to act on the surroundings of pin 10 and may moreover become near the center at the moment center of engine 7, or the moment about the pin 10. It is necessary to make rubber 9 avoid so that a resonance phenomenon etc. may not occur as an oscillating system to the pitch which is for preventing the vibration beyond the necessity for engine 7, and occurs from engine 7. Position B of pin 10 is moment-of-inertia [ of the circumference of center of gravity G of an engine system, and the center of gravity ] I._GFrom a relation with distance A from mass M and center of gravity G of an engine system to Conrogram 708 which is a vibration source to B=I_G/MxA It can be alike and can ask more. the above -- detailed explanation To -- it needs -- in the power type lawn mower which carries a vertical engine if the present invention was followed Transfer in the housing of engine vibration is prevented as much as possible, it excels in operation feeling, this seed lawn mower with little noise is obtained, and the above can be planned with easy composition called combination of the engine by an elastic body, and a housing, and combination with the pin which intersects perpendicularly with a crank shaft.

[Brief Description of the Drawings]

An engine, the important section fracture longitudinal section of a housing, and Drawing 3 of the side view and Drawing 2 in which Drawing 1 shows an example of a lawn mower are perspective views of a pin bonding link. one in a drawing -- as for a crank shaft and 8, a housing and 7 are [ an elastic body and 10 ] pivots a cutter braid and 9 an engine and 706 a lawn mower and 2.