CN1232723C - Engine generator - Google Patents

Abstract

To provide an engine power generator capable of effectively cooling a controller as electric equipment and suppressing leakage of noise from an intake port allowing a fuel tank to be easily disposed, capable of being easily disassembled and assembled, allowing the number of components to be reduced. In the engine power generator, a sound insulation cover 11 houses a power generating body 14, an engine 13 for driving the power generating body 14, a controller 15 for controlling them, and a fuel tank 12 for supplying fuel to the engine 13 are stored in a sound insulation cover 11, and a first intake port 21b and an exhaust opening 23b are formed in the sound insulation cover 11. The engine power generator drives a fan 35 for cooling the engine with the engine 13 as a driving source to introduce the outside air from the first intake port 21b, the outside air cools the controller 15 or the like, and warm air is discharged from the exhaust opening 23b. The controller 15 is disposed near the back side of the first intake port 21b so as to cover the first intake port 21b.

Description

Engine generator

Technical field

The present invention relates to a kind of engine generator that in sound-insulating cover, contains generating body, motor and fuel tank etc.

Background technique

In the past, with the engine generator of engine-driving generating body generating, the noise when cutting off generating with generating body and motor, further various parts such as baffler, fuel tank, controller are housed in the sound-insulating cover, disposed each parts as far as possible compactly.

Because this motor and generating body heating, so, if cover these parts, then owing to sound insulation case temperature height, and ambient air is imported in this sound-insulating cover, so that its cooling is housed in the various parts in the sound-insulating cover with sound-insulating cover.

In addition, when being housed in fuel tank etc. in this sound-insulating cover, in the past, having plenty of and be bearing in fuel tank on this sound-insulating cover or other parts with the sound-insulating cover split are set in addition, fuel tank was bearing on these other parts.

But, the problem that existing engine generator like this exists is: owing to must cool off the controller as electric elements effectively, and, ambient air is if be provided with intakeport to import ambient air on sound-insulating cover, then the noise by generations such as motors just leaks into the outside from this intakeport.

In addition, at so existing engine generator, if fuel tank is bearing on the sound-insulating cover, then decompose, assemble pretty troublesome, besides if then can increase number of components with other parts carry, and this fuel tank and controller wish not to be vulnerable to hot influence.

This engine generator has and for example resembles the Japanese patent gazette spy and open 2001-27125 number～spy and open 2001-27128 number, spy and open flat 11-200861 number, spy and open flat 11-200873 number～spy and the engine generator of being put down in writing such as open flat 11-200877 number.

Therefore, the purpose of this invention is to provide a kind of can the cooling controller effectively, can suppress to leak the engine generator of sound simultaneously from intakeport as electric elements.

In addition, another object of the present invention provides and a kind ofly can dispose fuel tank at an easy rate, also decomposes easily, assemble simultaneously, and can reduce number of components, and this fuel tank and controller are not vulnerable to the engine generator of hot influence simultaneously.

Summary of the invention

In order to reach such purpose, the invention that technological scheme 1 is put down in writing is a kind of like this engine generator: contain in sound-insulating cover: generating body, drive the motor of this generating body, the fuel tank of controlling the controller of their usefulness and supplying fuel to above-mentioned motor; In above-mentioned sound-insulating cover, be formed with intakeport and relief opening; By driving with the cooling fan of above-mentioned motor as driving source, import ambient air from above-mentioned intakeport, cool off above-mentioned controller etc., discharge hot gas from above-mentioned relief opening, the feature of this engine generator is: with above-mentioned controller with the mode that covers this intakeport be configured in above-mentioned intakeport inboard near; From operating a facial horizontal side, by above-mentioned fuel tank, above-mentioned motor, the order of above-mentioned generating body is configured, simultaneously, above-mentioned intakeport is provided with the 1st, the 2nd intakeport, above-mentioned cooling fan is provided with engine cooling fan and generating body cooling fan, side at above-mentioned sound-insulating cover forms above-mentioned the 1st intakeport, above-mentioned engine cooling uses fan arrangement between above-mentioned fuel tank and above-mentioned motor, by driving above-mentioned engine cooling fan, suck ambient air from above-mentioned the 1st intakeport, by above-mentioned controller, the engine cooling fan, cylinder, the order of baffler is cooled off, from above-mentioned relief opening exhaust, constitute the 1st cooling duct; Simultaneously, form above-mentioned the 2nd intakeport at central position than the close left and right directions of above-mentioned the 1st intakeport, with above-mentioned generating body cooling fan be configured in above-mentioned generating body near, by driving above-mentioned generating body cooling fan, suck ambient air from above-mentioned the 2nd intakeport, order by above-mentioned engine crankcase, generating body is cooled off, and from above-mentioned relief opening exhaust, constitutes the 2nd cooling duct.

The feature of the invention that technological scheme 2 is put down in writing is: on the basis of the structure that technological scheme 1 is put down in writing, above-mentioned intakeport is arranged on the facial side of operation of above-mentioned sound-insulating cover.

The feature of the invention that technological scheme 3 is put down in writing is: on the basis of the structure that technological scheme 1 is put down in writing, it is flat rectangular-shaped that above-mentioned controller is, and the big big face of area is towards the one side configuration of above-mentioned fore side portion.

The feature of the invention that technological scheme 4 is put down in writing is: on the basis of the structure that technological scheme 1 is put down in writing, in above-mentioned relief opening one side, above-mentioned the 2nd cooling duct is configured in the downside of above-mentioned the 1st cooling duct, be formed with between the 1st cooling duct and above-mentioned the 2nd cooling duct make the wind of discharging from above-mentioned the 2nd cooling duct towards below the wind direction control device.

The feature of the invention that technological scheme 5 is put down in writing is: on the basis of the structure that technological scheme 1 is put down in writing, the above-mentioned sound-insulating cover of this engine generator has end cover and is configured in the cover of this end cover upside, above-mentioned fuel tank directly is carried on the cover of the above-mentioned end, simultaneously, near this fuel tank, above-mentioned controller position directly is carried on the cover of the above-mentioned end.

The feature of the invention that technological scheme 6 is put down in writing is: on the basis of the structure that technological scheme 5 is put down in writing, the above-mentioned cover that is disposed at the upside of above-mentioned end cover is made of a plurality of combination covers that are separated from each other out, and it has: form the facial front shroud of operation, be configured in this front shroud rear side back cover and be formed with the side cover of relief opening.

The feature of the invention that technological scheme 7 is put down in writing is: on the basis of technological scheme 5 or 6 structures of being put down in writing, it is flat rectangular-shaped that above-mentioned controller is, the big big face of area will the facial rear side that fuel tank is disposed at above-mentioned controller as the front side of operation towards the one side configuration of above-mentioned fore side portion.

Its feature of the invention that technological scheme 8 is put down in writing is: on the basis of the structure that technological scheme 5 is put down in writing, from the facial side of aforesaid operations, from a side of left and right directions, be configured by the order of above-mentioned fuel tank, above-mentioned motor, above-mentioned generating body.

The invention that technological scheme 9 is put down in writing on the basis of the structure that technological scheme 6 is put down in writing, is characterized in that: the operation face at above-mentioned front shroud sets Direct box, disposes above-mentioned controller at the downside of this Direct box.

Description of drawings

Fig. 1 is the plan view of the engine generator of embodiment of the present invention.

Fig. 2 is the rear view of the engine generator of this mode of execution.

Fig. 3 is the right elevation of the engine generator of this mode of execution.

Fig. 4 is the figure of internal configurations state of the engine generator of this mode of execution of expression.

Fig. 5 is the plan view of internal structure of the engine generator of this mode of execution of expression, is the figure of the flow direction of expression cooling air.

Fig. 6 is the rear view of internal structure of the engine generator of this mode of execution of expression, is the figure of the flow direction of expression cooling air.

Fig. 7 is the plan view of internal structure of the engine generator of this mode of execution of expression, is the figure of the flow direction of expression cooling air.

Fig. 8 is the plan view that covers at the end of the engine generator of this mode of execution.

Fig. 9 is the plan view that covers at the end of the engine generator of this mode of execution.

Figure 10 is the right elevation that covers at the end of the engine generator of this mode of execution.

Figure 11 be this mode of execution engine generator end cover, along the sectional view of the A-A line of Fig. 8.

Figure 12 is the plan view of front shroud of the engine generator of this mode of execution.

Figure 13 is the plan view of front shroud of the engine generator of this mode of execution.

Figure 14 is the right elevation of front shroud of the engine generator of this mode of execution.

Figure 15 is the sectional view of front shroud of the engine generator of this mode of execution, (a) is that B1-B1 line, figure (b) along Figure 12 is the B2-B2 line side cross sectional view along Figure 12.

Figure 16 is that C front shroud, Figure 12 of engine generator of this mode of execution is to view.

Figure 17 be this mode of execution engine generator front shroud, along the sectional view of the D-D line of Figure 16.

Figure 18 is the plan view of open-close lid of cover gab at top engine generator, that be arranged on front shroud of this mode of execution.

Figure 19 be this mode of execution engine generator front shroud open-close lid, along the sectional view of the E-E line of Figure 18.

Figure 20 is the rear view of back cover of the engine generator of this mode of execution.

Figure 21 is the plan view of back cover of the engine generator of this mode of execution.

Figure 22 is the right elevation of back cover of the engine generator of this mode of execution.

Figure 23 is the rear view of lid of one-sided maintenance opening portion of back cover of the engine generator of this mode of execution.

Figure 24 is the right elevation of lid of one-sided maintenance opening portion of back cover of the engine generator of this mode of execution.

Figure 25 be this mode of execution engine generator back cover lid, along the sectional view of the F-F line of Figure 23.

Figure 26 is the plan view of side cover of the engine generator of this mode of execution.

Figure 27 is the left view of side cover of the engine generator of this mode of execution.

Figure 28 be this mode of execution engine generator the side cover, along the sectional view of the G-G line of Figure 26.

Figure 29 is the plan view of Direct box of the engine generator of this mode of execution.

Figure 30 is the figure of Direct box that has decomposed the engine generator of this mode of execution.

Figure 31 is the plan view of shell of Direct box of the engine generator of this mode of execution.

Figure 32 is the plan view of shell of Direct box of the engine generator of this mode of execution.

Figure 33 is the right elevation of shell of Direct box of the engine generator of this mode of execution.

Figure 34 be this mode of execution engine generator Direct box, along the sectional view of the H-H line of Figure 31.

Figure 35 be this mode of execution engine generator Direct box, along the sectional view of the I-I line of Figure 31.

Figure 36 be this mode of execution engine generator Direct box, along the sectional view of the J-J line of Figure 31.

Figure 37 be expression with the Direct box of the engine generator of this mode of execution be installed in state on the front shroud, along the sectional view of the K-K line of Fig. 1.

To be expression be installed in air shield and 2 cooling fans on the motor of engine generator of this mode of execution Figure 38 and be fixed on the plan view of the state on the end cover.

To be expression be installed in the plan view of the state on the motor of engine generator of this mode of execution with air shield and 2 cooling fans to Figure 39.

To be expression be installed in the rear view of the state on the motor of engine generator of this mode of execution with air shield and 2 cooling fans to Figure 40.

Figure 41 walks engine cooling left view fan, Figure 39 of the engine generator of this mode of execution of expression.

Figure 42 is the right elevation generating body cooling fan, Figure 39 of the engine generator of this mode of execution of expression.

Figure 43 is the rear view of air-strainer of the engine generator of this mode of execution.

Figure 44 is right elevation air-strainer, Figure 43 of the engine generator of this mode of execution.

Figure 45 is left view air-strainer, Figure 43 of the engine generator of this mode of execution.

Figure 46 is the plan view of preceding air shield of the engine generator of this mode of execution.

Figure 47 is the rear view of preceding air shield of the engine generator of this mode of execution.

Figure 48 is the left view of preceding air shield of the engine generator of this mode of execution.

Figure 49 is the right elevation of preceding air shield of the engine generator of this mode of execution.

Figure 50 is the plan view of back air shield of the engine generator of this mode of execution.

Figure 51 is the rear view of back air shield of the engine generator of this mode of execution.

Figure 52 is the left view of back air shield of the engine generator of this mode of execution.

Figure 53 is the right elevation of back air shield of the engine generator of this mode of execution.

Figure 54 is the left view with the generating body under the cover covering state of the engine generator of this mode of execution of expression.

Figure 55 is the sectional view with the generating body under the cover covering state of the engine generator of this mode of execution of expression, is the figure of the flow direction of expression cooling air.

Figure 56 is the plan view of generating side front shroud of generating body cooling fan of the engine generator of this mode of execution.

Figure 57 is the rear view of generating side front shroud of generating body cooling fan of the engine generator of this mode of execution.

Figure 58 is the plan view of generating side front shroud of generating body cooling fan of the engine generator of this mode of execution.

Figure 59 is the rear view of generating body rear flank cover of generating body cooling fan of the engine generator of this mode of execution.

Figure 60 is the plan view of generating body rear flank cover of generating body cooling fan of the engine generator of this mode of execution.

Figure 61 is the side view of generating body rear flank cover of generating body cooling fan of the engine generator of this mode of execution.

Figure 62 be this mode of execution engine generator the generating body cooling fan generating body rear flank cover, along the figure that cuts open of the L-L line of Figure 59.

Figure 63 is the plan view of a part of representing to be installed with the motor of decompressor with section.

Figure 64 is the side view of a part of representing to be installed with the motor of this decompressor with section.

Figure 65 is the figure of a side of the camshaft gear wheel of this decompressor of expression.

Figure 66 is that the expression handle that will reduce pressure is assembled in the figure of a side of the state on the camshaft gear wheel of this decompressor.

Figure 67 is the figure that section that the usefulness of this decompressor is equivalent to the A-A line of Figure 66 is represented camshaft gear wheel.

Figure 68 is the figure of the decompression handle of this decompressor of expression, (a) is plan view, (b) is side view.

Embodiment

Below embodiments of the present invention are described.

Fig. 1 to Figure 62 is the explanatory drawing of embodiments of the present invention.

At first, its formation is described.Engine generator of the present invention taking it by and large, in being divided into manifold sound-insulating cover 11, be equipped with fuel tank 12, motor 13, generating body 14 successively from a horizontal side (left side Fig. 5), front side near this fuel tank 12 disposes controller 15, have again, be equipped with Direct box 16 with the state that is bearing on the above-mentioned sound-insulating cover 11 at the upside of this controller 15.

This sound-insulating cover 11 is made of hypocraterimorphous end cover 19, front shroud 21, back cover 22 and side cover 23, and wherein front shroud 21, back cover 22 and side cover 23 are to be configured in this end to cover the combination cover 20 of 19 upsides.

As shown in Figs. 8 to 11, this end cover 19, on bottom surface sections 19h, be formed with the assembly department 19b of lug boss 19a, supporting engine 13 and the generating body 14 of carrying fuel tank 12, the 19c of muscle portion of supporting controller 15, and, also be formed with the 19k of muscle portion that strengthens usefulness and slot part 19d etc. in addition.In addition, on this bottom surface sections 19h, be formed with the lug boss 19j of supporting fuel tap 47 described later.Have again, on all longitudinal wall 19e on the peripheral portion that is arranged on this end cover 19, be formed with a plurality of installation sheet 19f, and the chimeric edge 19g of portion that is entrenched on the combinations thereof cover 20 is crooked laterally.

In addition, to shown in Figure 17, front shroud 21 folds into continuous left surface one side in ground that roughly meets at right angles from the front (operating facial 21j) of length direction, forms side face 21k thus as Figure 12.

On this front shroud 21, be formed with the construction opening 21a that these Direct box 16 usefulness are installed on the upper left side of the facial 21j of operation, and, at the downside of this construction opening 21a, be formed with 3 the 1st intakeport 21b that are used to suck ambient air (with reference to Figure 15 (a) etc.).

In addition,, be formed with the narrow slit 21g of installation and control box 16 usefulness in many places at the peripheral portion of this construction opening 21a, and, also be formed with the lug boss 21q that is used to be screwed Direct box 16.

Have again, on this front shroud 21, be formed with the 2nd intakeport 21m (with reference to Figure 15 (b)) near horizontal central position than the 1st intakeport 21b.Near the 2nd intakeport 21m, lead to from being arranged on the wire rope 27 that Kick-start portion 34 that inner back will illustrate extends out.

Have again,, be formed with one-sided handle portion 21c on the top of this front shroud 21, simultaneously, left side in Figure 13 of this one-sided handle portion 21c is formed with and is roughly semicircular one-sided maintenance opening portion 21h, and this one-sided maintenance opening portion 21h pushes down one side of something of the oiling tube 12a of portion of fuel tank 12.In addition,, as shown in figure 13, be formed with cover gab 21p, Figure 18 and open-close lid 29 shown in Figure 19, dismounting freely are installed on this cover gab 21p at the top part of this front shroud 21.

And, be arranged on the fastening lug boss 21d of screw of the lower edge of this front shroud 21, be installed in screw 24 in many places on the installation sheet 19f of cover of the above-mentioned end 19.In addition, be formed with the telescoping groove 21e of the inner face side chimeric edge 19g of portion unlimited, cover of the chimeric above-mentioned end of energy 19 in the lower edge of this front shroud 21, simultaneously, at the upside of this telescoping groove 21e, the tongue piece 21f that the outstanding to the inside rising wood that is provided with all longitudinal wall 19e of cover of a plurality of and above-mentioned end 19 contacts.

Have, to shown in Figure 22, back cover 22 is roughly the shape with front shroud 21 symmetries as Figure 20 again, folds into continuous left surface one side in ground that roughly meets at right angles from the 22j of back side portion of length direction, forms side face 22k thus.And, as shown in Figure 2, on the 22j of of the back side of this back cover 22, the lid 25 of dismounting freely is installed at horizontal middle body, on this lid 25,, be formed with the 2nd intakeport 25a that sucks ambient air as Fig. 2 and shown in Figure 23.In addition, on this back cover 22, also be formed with one-sided handle portion 22c and one-sided maintenance opening portion 22h, by it being installed on the front shroud 21 with screw 24, two one-sided handle portion 21c, 22c by back cover 22 and front shroud 21 constitute handle portion 26, have again, keep the full week of the oiling tube 12a of portion of fuel tank 12 by two one-sided maintenance opening portion 21h, 22h.And, the same with front shroud 21 on the lower edge of this back cover 22, also be formed with the fastening lug boss 22d of screw, telescoping groove 22e and tongue piece 22f, the same with front shroud 21 1 sides, be installed in screw 24 grades in many places on the installation sheet 19f of end cover 19.

Have, side cover 23 to shown in Figure 28, is configured in the right flank that looks from the front as Fig. 3, Figure 26 again, and between upside, front shroud 21 and the back cover 22 of cover of the above-mentioned end 19.On this side cover 23, as shown in figure 26, be formed with motor 13 baffler 30 relief opening 30a towards baffler opening 23a, and, in being roughly the scope of rectangle, be formed with will cool off inner hot gas be discharged to outside exhaust port 23b.On this side cover 23, be formed with the fastening lug boss 23d of a plurality of screws, be installed on end cover 19, front shroud 21 and the back cover 22 with screw 24.

Have, front shroud 21, back cover 22 can, ways of connecting formations chimeric mutually with groove with its side edge part again.

Have again, the Direct box 16 of dismounting freely is installed on the construction opening 21a of above-mentioned front shroud 21.This Direct box 16 is extremely shown in Figure 37 as Figure 29, panel 16b can be installed on the shell 16a from a surperficial side freely removably with screw 16g, a plurality of switch part 16c, socket 16d, a plurality of tutorial light 16e etc. are installed on this panel 16b, simultaneously, be equipped with various electric elementss in shell 16a, this shell has certain thickness (depths direction).The operation knob 16f that can rotate freely of manipulation fuel tap 47 described later is installed on this Direct box 16 in addition.

As Figure 32 and shown in Figure 36, on the shell 16a of this Direct box 16, be equipped with a plurality of engaging pawl 16h, this engaging pawl 16h inserts and is locked among the narrow slit 21g (with reference to Figure 12) that is formed on the front shroud 21.In addition, as shown in figure 37, the lower edge 16k of this shell 16a is locked at the outside of downside peripheral portion of the construction opening 21a of front shroud 21, simultaneously, is formed with guiding gusset 16m in many places.And, the Figure 31 of this shell 16a and lug boss 16p shown in Figure 35 with screw from installed inside on the lug boss 21q of front shroud shown in Figure 12 21.So, if unload the screw of many places, only extract engaging pawl 16h and just can simply Direct box 16 be unloaded down.In addition, only unloading lower panel 16b from the outside just can be simply to places under repair such as switch part 16c or tutorial light 16e.

Constitute sound-insulating cover 11 as described above.

Below, the inner member that is housed in this sound-insulating cover 11 is described.

At first, see generator,, near the inboard of the intakeport 21b of front shroud 21, dispose controller 15 at the downside of Direct box 16 with predetermined thickness in a horizontal side (left side) from the front.

The structure of this controller 15 is: be connected removably on Direct box 16, motor 13 and the generating body 14 etc. with electric wiring and connector etc., with control motor 13 and generating body 14.

It is flat rectangular-shaped that these controller 15 profiles are, vertical putting, and length direction is along the landscape configuration of engine generator.Therefore, the big face that area is big disposes towards facial 21j one side of the operation of front shroud 21, therefore can cover intakeport 21b.With the state on the 19c of muscle portion that is bearing in end cover 19, fix this controller 15.

And, from the horizontal side (left side) of generator to the right, dispose fuel tank 12, motor 13 and generating body 14 successively.

This fuel tank 12 as Fig. 4 and shown in Figure 7, in the rear side and the row arrangement of controller 15, as shown in Figure 6, is bearing in via rubber whetstone piece 31 on a pair of lug boss 19a of end cover 19.In addition, this fuel tank 12 as previously discussed, refuel the tube 12a of portion via rubber insulator 12b by front shroud 21 and back cover 22 maintenances, be housed in the sound-insulating cover 11 with stationary state thus.

As Fig. 6 and shown in Figure 8, this fuel tank 12 in the mounting structure on the end cover 19 is: on this end cover 19, be provided with the outstanding upward lug boss 19a in two places, simultaneously, bottom surface sections at fuel tank 12 also is provided with outstanding chimeric axial region 12c downwards, they are entrenched on the rubber whetstone piece 31, via rubber whetstone piece 31 fuel tank 12 are positioned on the end cover 19 thus.

On the other hand, motor 13 is 4 stroke single-cylinder motors at this, disposes crankcase 13a in the bottom, simultaneously, be provided with cylinder 13b at the upside of this crankcase 13a, baffler 30 is configured in the right side among Fig. 5 of this cylinder 13b, have again, dispose Carburetor 13d at the rear side of this cylinder 13b.

And, between the crankcase 13a and fuel tank 12 of this motor 13, dispose Kick-start portion 34 that be connected, that pilot engine usefulness with bent axle 13c, in this Kick-start portion 34, be formed with a plurality of opening 34a, its structure is: state wire rope 27 and make 34 rotations of this Kick-start portion by pulling on, can pilot engine 13.

In addition, between this Kick-start portion 34 and crankcase 13a, dispose the fan 35 that the cooled engine that is connected with bent axle 13c is used, driving by motor 13, fan 35 rotations that cooled engine is used, suck cooling air by above-mentioned the 1st intakeport 21b thus, make its cooling controller 15 and motor 13 etc.

On the other hand, right side in Fig. 5 of motor 13, be provided with the generating body 14 of external rotor type at the downside of baffler 30, this generating body 14 has stator 14a that is fixed on the crankcase 13a and the rotor 14b that is fixed on the bent axle 13c, its structure is: bent axle 13c rotation, rotor 14b is rotation just, therefore generates electricity.

Right side in Fig. 5 of this generating body 14, dispose the generating body cooling fan 36 of this generating body 14 of cooling, rotation by bent axle 13c is driven, mainly suck ambient air from the 2nd intakeport 25a, simultaneously, suction is stuck in the air in the sound-insulating cover 11, cools off generating body 14, and discharges hot gas from the relief opening 23b of side cover 23.

And, the formation of the 1st cooling duct: by driving engine cooling fan 35, suck ambient air from the 1st intakeport 21, shown in the dashdotted arrow among Fig. 5, Fig. 6 and Fig. 7, cool off with the order of fan 35, cylinder 13b, baffler 30 by controller 15, engine cooling, carry out exhaust from roughly half the part of the upside of relief opening 23b.

In addition, the formation of the 2nd cooling duct: by driving generating body cooling fan 36, suck ambient air from the 2nd intakeport 25a, shown in the arrow of the dotted line among Fig. 5, Fig. 6 and Fig. 7, order with engine crankcase 13a, generating body 14 is cooled off, and carries out exhaust from roughly half the part of the downside of relief opening 23b.

Resemble and constitute the 1st cooling duct following.Promptly, air-strainer cover 38 is set, make fuel tank 12 1 sides of its energy covering engine 13, the back air shield 40 of the rear side of the preceding air shield 39 of front side of, covering engine cylinder 13b 38 that be connected with this air-strainer cover and baffler 30 and covering engine cylinder 13b and baffler 30 is set simultaneously.

Extremely shown in Figure 45 as Figure 43, this air-strainer cover 38 is installed on the motor 13, make it be formed with the opening 38a of the circle of exposing Kick-start portion 34, simultaneously, covering engine cooling fan 35, and the cooling air that will pass the opening 34a of Kick-start portion 34 is directed to cylinder 13b one side of top.

In addition, on this air-strainer cover 38, be provided with sound insulation gusset 38b projectedly to fuel tank 12 1 sides, make its surround Kick-start portion 34 around, inboard at this sound insulation gusset 38b disposes sound absorbing material 38c, simultaneously, also be pasted with not shown sound absorbing material, make it cover the opening 34a of Kick-start portion 34 thus at position, opposite with the fuel tank 12 of this Kick-start portion 34 face-offs.

Have, the sidepiece on this air-strainer cover 38 is formed with air-strainer core assembly department 38d again, and the air-strainer core 41 that purifies air is installed on this air-strainer core assembly department 38d.

In addition, the structure of preceding air shield 39 and back air shield 40 is half-and-half separated shape before and after roughly, by with its assembling, to reserve cooling air is covered it from the side of cylinder 13b and baffler 30 and the mode in the gap that the top is passed through.

Should make Figure 46 to shape shown in Figure 49 by preceding air shield 39, and with screw its a plurality of assembly department 39a were fastened on the motor 13, simultaneously, portion is provided with and has fibrous structures heat insulation and that figure sound insulation value does not show within it.In addition, on this preceding air shield 39, be formed with wall part 39b, this wall part 39b cover the downside of baffler 30 and the 2nd cooling duct that passes through with the downside of baffler with from generating body 14 1 sides between the interval separate, simultaneously, be formed with exhaust opening 39d in side cover 23 1 sides.

Back air shield 40 is made the shape shown in Figure 50 to Figure 53, with screw its a plurality of assembly department 40a is fastened on the motor 13, and simultaneously, portion is provided with and has heat insulation and not shown fibrous structures sound insulation value within it.In addition, on this back air shield 40, be formed with wall part 40b, this wall part 40b cover the downside of baffler 30 and the 2nd cooling duct that passes through with the downside of baffler with from generating body 14 1 sides between the interval separate, simultaneously, be formed with exhaust opening 40d in side cover 23 1 sides.

Under the state that connects this back air shield 40 and preceding air shield 39, the wall part 40b of back air shield 40 is connected with the wall part 39b of preceding air shield 39, and simultaneously, two exhausts are connected with opening 39d, 40d, form the relief opening of the 2nd cooling duct.

Have again, on the wall part 40b of this back air shield 40, between the 1st cooling duct and the 2nd cooling duct, be formed with and make the wind of discharging from the 2nd cooling duct wind direction control device 40c towards the below.This wind direction control device 40c shown in Figure 51 waits, forms downwards agley.

On the other hand, generating side front shroud 43 and generating body rear flank cover 44 constitute the part of the 2nd cooling duct, wherein, described generating side front shroud 43 and generating body rear flank the cover 44 by above-mentioned generating body 14 and generating body cooling fan 36 such covering the shown in Figure 54 to Figure 55.

Shown in Figure 55 to Figure 58, this generating side front shroud 43 is formed with the cylindrical portion 43a on every side that covers generating body 14 and generating body cooling fan 36, simultaneously, at the end of this cylindrical portion 43a, be formed with the suction opening 43b that cooling air is exposed, sucks in the front (motor side) that makes generating body 14.Be formed with the shielding part 43c of crooked ring-type to the inside at the peripheral portion of this suction opening 43b, cover motor 13 1 sides of clearance C of outer circumferential face of the rotor 14b of cylindrical portion 43a and generating body 14 by this shielding part 43c from cylindrical portion 43a.Shown in Figure 54, the width H of top one side of this shielding part 43c forms than other parts widely.

In addition, be formed with the occlusive part 44a of the opening of the opposite side (side cover 23 1 sides) that stops up front shroud cylindrical portion 43a on generating body rear flank cover 44, simultaneously, shown in Figure 42, Figure 59 and Figure 60, back air shield 40 1 sides on top are formed with spout 44b.

The downside of this spout 44b be formed with continuously roughly become " コ " word shape, to the shielding projection 44c that side cover 23 1 sides are protruded, this shields the inside one side contacts of front end and the side cover 23 of protruding 44c, and contacts with the downside peripheral portion of relief opening 23b.Be directed into the space that surrounds by the protruding 44c of shielding from the cooling air of this spout 44b ejection, be discharged to the generator outside from the lower portion of the relief opening 23b of the rectangle of side cover 23.

The wind direction control device 40c of above-mentioned back air shield 40 is positioned at the upside of this spout 44b.

Thus, when driving generating body cooling fan 36, ambient air mainly imports in the sound-insulating cover 11 from the 2nd intakeport 25a, passes engine crankcase 13a, generating body 14, generating body cooling fan 36, spout 44b, relief opening 23b, constitutes the 2nd cooling duct.

On the other hand, as Fig. 4 and shown in Figure 6, the petrolift 46 that the fuel supply of fuel tank 12 is arrived motor 13 1 sides is installed on the top of fuel tank 12, opposite with Direct box 16 1 sides side face, while is at the downside of this petrolift 46, the fuel tap 47 that fuel shutoff is supplied with is installed and is configured on the substrate 48, and aforesaid substrate 48 is installed on the end cover 19.This fuel tap 47 is connected with aforesaid operations knob 16f via link 49, rotates open and close fuel tap 47 by making this operation knob 16f.

Below its effect is described.

By drawing wire rope 27 to make 34 rotations of Kick-start portion, drive motor 13, bent axle 13c rotation, the rotor 14b rotation of generating body 14 is generated electricity.

Meanwhile, engine cooling is rotated with fan 35, and therefore, shown in dashdotted arrow among Fig. 5, Fig. 6 and Fig. 7, cooling air flows through from the 1st cooling duct.That is, at first, ambient air flow in the sound-insulating cover 11 from the 1st intakeport 21b, owing near the inboard of the 1st intakeport 21b, dispose controller 15, so, can directly cool off by the ambient air that flows into from the 1st intakeport 21b.Therefore, improved the cooling performance of controller 15.And it is flat rectangular-shaped that this controller 15 is, and therefore the big big face of area can further improve cooling performance towards facial 21j one side of operation (the 1st intakeport 21b one side) configuration.

This cooling air is cooling controller 15 on one side, from the upside of this controller 15 or the downside of this controller 15 and fuel tank 12 pass on one side, be drawn into engine cooling with fan 35 1 sides from the opening 34a of Kick-start portion 34.

Cooling air passes the 1st cooling duct that is formed by air-strainer cover 38, preceding air shield 39 and back air shield 40 in engine cooling with downstream one side of fan 35, cooled engine cylinder 13b and baffler 30, the roughly first half from the relief opening 23b of side cover 23 is discharged to the generator outside then.

On the other hand, bent axle 13c rotation drives generating body cooling fan 36, and therefore, shown in the arrow of dotted line among Fig. 5, Fig. 6 and Fig. 7, cooling air flows through from the 2nd cooling duct.That is, at first, ambient air is inhaled in the sound-insulating cover 11 from the 2nd intakeport 21m, 25a, simultaneously, is stuck in air in the sound-insulating cover 11 to generating body cooling fan 36 1 side flow.

Therefore, cooling air passes through from the side of engine crankcase 13a, is inhaled into by generating side front shroud 43 and cover 44 spaces that form, generating body rear flank, cooling generating body 14.Then, cooling air is discharged from the spout 44b of generating body rear flank cover 44, from the space that is formed by the protruding 44c of shielding, is discharged to the generator outside via the lower portion of the relief opening 23b of side cover 23.

For such cooling air passway, from the 1st intakeport, order by fuel tank 12 and controller 15, motor 13, generating body 14, relief opening 23b is provided with, because fuel tank 12 and the controller 15 that temperature is low is configured in upstream one side, so, can form such air-flow path, promptly, can make air-flow from temperature low fuel tank 12 and high motor one side flow of controller 15 1 side direction temperature, between fuel tank 12 and controller 15 1 sides and motor 13 and generating body 14 1 sides, next door etc. needn't be set, can simplify the internal structure of sound-insulating cover 11.

In addition, this air-flow forms the 1st, the 2nd this two passes of cooling duct, the 1st cooling duct constitutes the air-flow of the 1st intakeport 21b, controller 15, engine cooling fan 35, cylinder 13b, baffler 30, relief opening 23b, and the 2nd cooling duct constitutes the air-flow of the 2nd intakeport 21m, 25a, engine crankcase 13a, generating body 14, generating body cooling fan 36, relief opening 23b.

Such formation two passes makes the higher cylinder 13b of temperature form different systems with baffler 30 1 sides with generating body 14 1 sides, therefore can cool off it effectively respectively.

In addition, owing on generating side front shroud 43, be formed with shielding part 43c, so, shown in Figure 55, can prevent that air from scurrying out from clearance C, suck cooling air easily, in addition, this is processed into forniciform shielding part 43c, can improve the intensity of generating side front shroud 43 self.

Have again, since be formed with between the 1st cooling duct and the 2nd cooling duct cooling air that makes the 2nd cooling duct one side towards below wind direction control device 40c, therefore, the cooling air of discharging from the 2nd cooling duct can't influence the cooling air of discharging from the 1st cooling duct, can carry out exhaust reposefully, so, cooling air by the cylinder 13b in the 1st cooling duct etc. is flowed well, can improve cooling performance, simultaneously, can prevent to interfere with each other, can reduce noise from the wind that two cooling ducts are discharged.In addition, because with the spout 44b of this wind direction control device 40c covering generating body cooling fan 36 1 sides, so, can shield the noise source of these fan 36 grades, can reduce noise.

In addition, by near Configuration Control Unit 15 rear side of the 1st intakeport 21b, can suppress to leak sound with this controller 15, arrangement components can reduce noise at an easy rate in addition.That is,,,, can reduce noise so can suppress to leak into the sound of generator outside because the rear side controlled device 15 of its 1st intakeport 21b covers though the noise of motor 13 1 sides spills from the opening 34a of Kick-start portion 34.

Particularly, owing to form the 1st intakeport 21b in the facial side of the operation of front shroud 21, so, can prevent to spill sound from the 1st intakeport 21b, this is reducing towards effective especially aspect operator's the noise.

Have, it is flat rectangular-shaped that this controller 15 is again, and the big big face of area is towards the facial side configuration of operation, so, can further improve sound insulation value.

Have, because the state to separate with generating body 14 1 sides with the motor 13 of high temperature, the fuel tank 12 and the controller 15 of low-temperature condition are kept in configuration hope with adjoining each other, so can reduce the heat affecting to fuel tank 12 and controller 15 as much as possible again.

In addition, owing to directly this fuel tank 12 and controller 15 are carried on the end cover 19, so, there is no need with sound-insulating cover 11 supporting fuel tanks 12, or the parts of other configuration supporting, can fuel tank 12 be set at an easy rate with less number of components.

That is, unload screw 24, just can it be disassembled with the order of side cover 23, front shroud 21, back cover 22, under the state that disassembles, the state of inner members such as motor 13 and fuel tank 12 can remain unchanged.

Therefore, can improve the assembling performance, and under the state of pulling down these covers 21,22,23, can keep in repair inner member, because after finishing maintenance, it is just passable only need to install these covers 21,22,23 once more, so, can keep in repair at an easy rate.

By the way, Japanese patent gazette spy drives existing engine, the generator put down in writing flat 11-200861 number, if unload each cover, then can not keep original state of inner member, and be each self-dispersed state, so, maintainability and assembling poor-performing.In addition, Japanese patent gazette spy opens the existing engine generator that the 2001-27125 grade is put down in writing, and must unload the cover of 6 parts, so operating characteristics is poor.

And, owing to front shroud 21 grades of sound-insulating cover 11 can be independent of fuel tank 12 ground separately, so, under the state that unloads front shroud 21 grades, operation such as can keep in repair at an easy rate.

In addition, the structure of fuel tank 12 is: this fuel tank 12 is bearing on the end cover 19 via rubber whetstone piece 31, and at the mounting cup period of the day from 11 p.m. to 1 a.m, with front shroud 21 and back cover 22, via the insulator 12b of rubber the oiling tube 12a of portion of fuel tank 12 is carried out clamping, thus, even under the state that unloads cover 21,22, also can intactly keep the state of fuel tank 12.

Since it is so, just do not need the Japanese patent gazette spy to open the support that the such fixed oil tank of existing engine generator that the 2001-27125 grade put down in writing is used, because when production and assembly and when keeping in repair on the market, can intactly keep fuel system, so can improve assembling performance and maintainability.

In addition,, controller 15 is configured in its downside owing on the facial 21j of the operation of this front shroud 21, dispose Direct box 16, so, can effectively utilize the spatial configuration controller 15 of Direct box 16 downsides.

Have, because petrolift 46 is directly installed on the fuel tank 12, fuel tap 47 is screwed on substrate 48 again, so, fuel system and front shroud 21 and back cover 22 are separated, can be with the fuel system blocking, can assemble or decompose with the state of blocking.

Have, Direct box 16 has carried out blocking in advance again, be fixed on the front shroud 21 from the inboard with screw, therefore, even each national difference such as specification also can be replaced with other Direct box at an easy rate.In addition, owing to cannot see the screw 16j of its installation usefulness from the outside, so, can improve its appearance quality.And, by unload screw 16g from the outside, unloading control panel 16b, just can keep in repair at an easy rate.

In addition, owing on the lower edge 16k of the shell 16a of this Direct box 16, be provided with the double guiding gusset 16m that strengthens usefulness that is, so, by with this guiding gusset 16m guiding, can position at an easy rate and assemble.

Have again, on the front shroud 21 of the upside that is configured in end cover 19, back cover 22, side cover 23, be formed with telescoping groove 21e, the 22e, the 23e that open wide to inner face one side in lower edge respectively, be equipped with a plurality of tongue piece 21f, 22f, 23f to the inside at the upside of these telescoping grooves 21e, 22e, 23e simultaneously.

Therefore, when front shroud 21 grades are installed, its tongue piece 21f etc. is resisted against the rising wood of all longitudinal wall 19e of end cover 19, therefore can landing not get off, by it is slided under this state to the inside keeping, can be covered 19 the chimeric edge 19g of portion the end and be entrenched among these telescoping grooves 21e, 22e, the 23e, owing to be screwed just passable in this state, so, can improve the installation exercise performance of front shroud 21 grades.

In addition,, roughly be " L " shape because this front shroud 21 or back cover 22 fold into the continuous side, ground that roughly meets at right angles from the front or the back of length direction, so, all around the positioning of these covers 21,22.

Have again, on this air-strainer cover 38, be provided with the sound insulation gusset 38b on every side that is trapped among Kick-start portion 34 projectedly, inboard at this sound insulation gusset 38b disposes sound absorbing material 38c, simultaneously, also is pasted with not shown sound absorbing material at the position, opposite with the fuel tank 12 of this Kick-start portion 34 face-offs, therefore, can discharge the noise height, Kick-start portion 34 opening 34a near carry out sound insulation and sound-absorbing, do not need new passage, can reduce noise effectively.

Following decompressor according to Figure 63 to 68 pair of motor of the present invention describes.

It shown in Figure 63 to Figure 68 the engine generator of having used decompressor of the present invention.

In the drawings, label 110 is single-cylinder four-stroke engines that engine generator uses, shown in Figure 63 and Figure 64, on crankcase 111, dispose bent axle 113, with the cylinder cap 115 of these crankcase 111 one on dispose exhaust valve (not shown) and intake valve 117 as engine valve, between bent axle 113 and intake valve 117 and exhaust valve, dispose camshaft gear wheel 121.The gear part 121a of the periphery of camshaft gear wheel 121 is meshed with the actuation gear 119 of bent axle 113, can rotate along with the rotation of bent axle 113.And, a side at camshaft gear wheel 121 is provided with periphery cam 123 projectedly, cam interlock rocking arm 125a, the 125b that can shake are against on this periphery cam 123, because cam interlock rocking arm 125a, 125b shake, push rod 127a, 127b to-and-fro motion make intake valve 117 and exhaust valve switch via tappet 128a, 128b.At this, bent axle 113 every rotation 2 circles, camshaft gear wheel 121 rotations 1 circle, during this period, intake valve 117 and each open and close of exhaust valve difference 1 time.

Shown in Figure 65～Figure 67, on the camshaft gear wheel 121 of such motor 110, be provided with decompressor.This decompressor is in order to make intake valve 117 and exhaust valve switch in motor 110 operation process, the shape of the camming surface 122 by making a side that is located at camshaft gear wheel 121 projectedly, when flame-out and when starting produce part and change, reduce the compressive force of firing chamber.

This decompressor is provided with recess 133 in another side of camshaft gear wheel 121, is equipped with on this recess 133: the decompression handle 137 that can rotate; Be used for the torsion spring 139 of this decompression handle 137 to the loading of the center of the running shaft 131 of camshaft gear wheel 121 side; Cover the cover 141 of decompression handle 137 and torsion spring 139.

On recess 133, be provided with decompression handle 137 pivots are propped up locational pivot 135 in the axle center of departing from running shaft 131, have again, near pivot axis 135 position, be provided with pass through openings 126 in the position corresponding with the camming surface 122 of periphery cam 123, this pass through openings 126 connects the 123a of disc portion of camshaft gear wheels 121, makes the degree of depth that has to the neutral position of the thickness of the camming surface 122 of periphery cam 123.This pass through openings 126 make camming surface with periphery cam 123 122 that intersect, see that from recess 133 1 sides with pivot 135 be the long groove shape of the arc at center.In addition, on the 123a of disc portion of camshaft gear wheel 121, be provided with the slidable gusset 138 of side 137a of decompression handle 137, and to be made into pivot 135 be the arcuation at center.

Shown in Figure 68, decompression handle 137 is that board-like material is struck out the stamping part that is made into integration, the one end connect board-like material be formed with can be chimeric with the pivot 135 of camshaft gear wheel 121 pivot hole 143, have again, leave pivot hole 143 near the position be formed with the riser portions 145 of making the regulation shape by crooked board-like material punch process.In addition, be formed with equilibrium block portion 146 at the other end.

This decompression handle 137 by can be freely on the pivot 135 that pivot hole 143 is entrenched in camshaft gear wheel 121 rotationally pivot prop up on pivot 135, riser portions 145 is passed the pass through openings 126 of camshaft gear wheel 121, outstanding side one side that is formed with periphery cam 123 that is configured in camshaft gear wheel 121.And, this riser portions 145 moves in pass through openings 126 owing to the rotation of decompression handle 137, protrude continuously or outwards from the camming surface 122 of periphery cam 123, or be housed in the inboard of camming surface 122, thereby the shape that can produce the camming surface 122 that makes periphery cam 123 produces the effect that part changes.

At this, it is the concave surface 144 of the arcuation center, that have certain radius that the side of pivot hole 143 1 sides of riser portions 145 also forms with pivot hole 143.In addition, also be the center, have a convex surface 136 that the arc of certain radius is that concave surface 144 is the radius of curvature identical with convex surface 136 with pivot 135 with the wall of the pass through openings 126 of this concave surface 144 face-offs.Therefore, when decompression handle 137 rotated, the concave surface 144 of riser portions 145 can slide on convex surface 136, even protrude under the state in the outside at the camming surface 122 of riser portions 145 from periphery cam 123, concave surface 144 also is and convex surface 136 state of contact.

In order to make such decompression handle 137, in this embodiment, make by whole drawing, at first, the board-like material that will be made of the metal plate thinner than the degree of depth of recess 133, stamping-out are made the profile semi-finished product of shape under the state that launches riser portions 145, that be provided with pivot hole 143.Then, it is carried out drawing, riser portions 145 is made in bending thus, further with the side of the side of pivot hole 143 1 sides of riser portions 145 and the opposite side manufacturing curvature that becomes to stipulate respectively.In addition, also can make with other method such as powder smelting, forging, cutting, at one end form pivot hole 143, form equilibrium block portion 146 at the other end, and, equally also can have thus the method for the riser portions 145 of the crooked shape of making and make by formation.

In addition, torsion spring 139 be with wire coil circlewise, be provided with the shape of lock part 139a, 139b at two ends, around the pivot 135 of the 123a of disc portion of camshaft gear wheel 121, be formed with slot part 123b, torsion spring 139 is to be housed in the state among the above-mentioned slot part 123b, and clamping is configured between the 123a of disc portion and decompression handle 137 of camshaft gear wheel 121.At this, the ring portion 139c Spielpassung of torsion spring 139 is on pivot 135, lock part 139a be locked in by the 123a of the disc portion locking of camshaft gear wheel 121 by on the lock part 123c, another lock part 139b be locked in the decompression handle 137 by on the lock part 137b, thus, equilibrium block portion 146 being loaded ground by the central direction to running shaft all the time installs.

The size of the spring force of this torsion spring 139 is set for: under the state of camshaft gear wheel 121 low speed rotation when piloting engine, make its equilibrium block portion 146 that can maintain decompression handle 137 be configured in center one side of running shaft, the state of camming surface 122 that riser portions 145 protrudes in periphery cam 123; In addition, under the state of camshaft gear wheel 121 rotation of motor 110 in the driving process, decompression handle 137 laterally rotates by centrifugal force, and riser portions 145 is accommodated the inboard of camming surface.

Have again, cover 141 has recess 133 corresponding shape with camshaft gear wheel 121, by make be arranged on cover 141 around a plurality of claw 141a resiliently deformables be locked in the recess 133 that is arranged on camshaft gear wheel 121 around a plurality of through holes 153 in, and be installed on the recess 133 of camshaft gear wheel 121.Under the installment state of this cover 141, cover 141 contacts with on every side the 133a of the edge portion that contacts, and contact and be fixed with the end face 131b of the shaft hub 131a of the end face 135a of pivot 135 and running shaft 131, prevent to reduce pressure handle 137 and torsion spring 139 split away off.And under the state that this cover 141 is installed, the space that forms in the recess 133 of camshaft gear wheel 121 is wideer than the wall thickness of decompression handle 137, the degree that can rotate for decompression handle 137.And the scope 141b that is moved by lock part 137b of decompression handle 137 offers opening into long hole shape, and it can be moved under the outstanding state of the lock part 139b of torsion spring 139.

The decompressor of this structure begins starting in order to make motor 110 from flameout state, and the wire rope that pulls out the not shown Kick-start portion that is connected with bent axle 113 etc. by the user starts.

When carrying out this starting operation, because wire rope is drawn out, drive bent axle 113 rotations, therefore, camshaft gear wheel 121 low speed rotation.At this moment, the equilibrium block portion 146 that pivot props up the decompression handle 137 on camshaft gear wheel 121 is configured in center one side of running shaft 131 by the spring force of torsion spring 139, and the riser portions 145 of decompression handle 137 is for being projected into the state in the outside continuously from camming surface 122.

Therefore, when suction stroke finished, cam interlock rocking arm 125a can contact with riser portions 145, the shut-in time of energy retarded admission door 117.In addition, even when exhaust stroke finishes, cam interlock rocking arm 125b also can contact the shut-in time of delayed exhaust door with riser portions 145.Therefore, when starting operation, the compressive force of firing chamber 112 can be reduced, therefore operation can be started at an easy rate.

On the other hand, in the common operation process after starting, because the rotation of camshaft gear wheel 121, centrifugal action is in the equilibrium block portion 146 of decompression handle 137, the spring force of resistance torsion spring 139 laterally rotates decompression handle 137, and therefore, riser portions 145 is accommodated the inboard of camming surface.Therefore, cam interlock rocking arm 125a, 125b are shaken along the camming surface 122 of periphery cam 123, can make intake valve 117 and exhaust valve carry out open and close,, motor 110 is run well with common compressive force compression and combustion chamber 112 with camming surface 122.

According to decompressor with above such structure, because decompression handle 137 at one end has pivot hole 143, and, have leave pivot hole 143 near the riser portions 145 that forms of location bending, so, do not have pivot 135 on the axial position of the riser portions 145 of this decompression handle 137, therefore, the thickness that needn't be made into the thickness of an end and the other end is different shapes significantly.In addition since the pivot 135 and the size of pivot hole 143 can be set for different with the size of riser portions 145, so the handle 137 that will not reduce pressure is made the shape that resembles the complexity the existing decompression handle.Therefore, decompression handle 137 can be made simple shape, for example, promptly use method such as whole drawing also to make at an easy rate, make decompressor easily.

In addition, because the side of pivot hole 143 1 sides of riser portions 145, have with pivot hole 143 is the concave surface 144 of the arcuation at center, and, with the wall of the pass through openings 126 of concave surface 144 face-off be to be the convex surface 136 of the arcuation at center with pivot 135, concave surface 144 can slide on convex surface 136, so, even riser portions 145 is projected into the outside from camming surface 122, the concave surface 144 of the arcuation of riser portions 145 also can by the convex surface 136 of the pass through openings 126 of camshaft gear wheel 121 from the back side one side bearing, even cam interlock rocking arm 125a, 125b repeated stock riser portions 145, crooked iso-stress also is difficult to be applied on the riser portions 145, in addition, crooked iso-stress also is difficult to be applied on decompression handle 137 bodies.Therefore, can improve the serviceability of riser portions 145 and decompression handle 137.And, the wall thickness of riser portions 145 and decompression handle 137 can be made very thinly, therefore, can make decompression handle 137 very light.

Have, cam interlock rocking arm 125a, 125b though impact force is applied on the riser portions 145, can bear this impact force with convex surface 136 when impacting again, so, can not be directly delivered on the pivot 135 by decompression handle 137.Therefore, pivot 135 does not require and the corresponding very high intensity of its impact force, can reduce the intensity of pivot 135, maybe can do pivot 135 less.

Therefore, the manufacturing of decompression handle 137 and camshaft gear wheel 121 becomes and is more prone to, and can make decompressor at an easy rate.

And, the present invention is not limited to above-mentioned form of implementation, can suitably change, for example, though with 1 camming surface, 122 open and close intake valves 117 and these two valves of exhaust valve, riser portions 145 can be given prominence to and can be configured on this camming surface 122 place of custody at the foregoing description,, also can on intake valve 117 and exhaust valve, different camshaft gear wheel 121 and camming surface 122 be set respectively, riser portions 145 is set on one respectively or only.

Have again, in the above-described embodiments, though change open and close time of intake valves 117 and these two valves of exhaust valve with riser portions 145,, also can change one of them open and close time of intake valve or exhaust valve with 145 of riser portions.

Therefore, the camshaft gear wheel that above-mentioned decompressor will rotate along with the rotation of above-mentioned bent axle is configured between the bent axle and engine valve of motor, and the cam of the camming surface with the above-mentioned engine valve of open and close is set in a side of this camshaft gear wheel,

Dispose the decompression handle in the another side of above-mentioned camshaft gear wheel, the one end is being supported, and the other end quilt loads to the central direction of the running shaft of above-mentioned camshaft gear wheel simultaneously,

Be provided with riser portions on this decompression handle, the pass through openings that this riser portions is passed above-mentioned camshaft gear wheel is projected into an above-mentioned side, under the state that this camshaft gear wheel stops, outstanding from this camming surface continuously mutually with above-mentioned camming surface,

Under the state of above-mentioned camshaft gear wheel rotation, above-mentioned decompression handle rotates by centrifugal force, above-mentioned riser portions can be accommodated the inboard of above-mentioned camming surface, it is characterized in that of the decompressor of this motor:

Above-mentioned decompression handle has pivot hole at an above-mentioned end, and have leave this pivot hole near the above-mentioned riser portions that forms of location bending,

Above-mentioned side at above-mentioned camshaft gear wheel has pivot, above-mentioned pivot hole is entrenched on this pivot, whereby, can supports above-mentioned decompression handle freely rotationally, by the rotation of above-mentioned decompression handle, above-mentioned riser portions is can be from above-mentioned camming surface outstanding or accommodated by above-mentioned pass through openings.

In addition, above-mentioned decompressor has following structure characteristic: it is the concave surface of the arcuation at center that the side of above-mentioned pivot hole one side of above-mentioned riser portions has with this pivot hole, simultaneously, with the wall of the above-mentioned pass through openings of this concave surface face-off is to be the convex surface of the arcuation at center with above-mentioned pivot, and above-mentioned concave surface can be slided on this convex surface.

Such as described in detail above, because the decompression handle has pivot hole in a side, have simultaneously leave pivot hole near the riser portions that forms of location bending, so, do not have pivot, the handle that will not reduce pressure is made the remarkable different shape of thickness of the thickness and the other end of an end, in addition, different owing to the size of pivot hole being set for the size of riser portions, so, the handle that will not reduce pressure is made the shape that resembles the complexity existing, can make simple shape.Therefore, the decompression handle can be made at an easy rate, the decompressor of making easily can be obtained.

In addition, because it is the concave surface of the arcuation at center that the side of pivot hole one side of riser portions has with the pivot hole, simultaneously, with the wall of the pass through openings of concave surface face-off be to be the convex surface of the arcuation at center with the pivot, above-mentioned concave surface can slide on convex surface, so, even riser portions from camming surface be projected into the outside, the concave surface of riser portions also can by the convex surface of the pass through openings of camshaft gear wheel from the back side one side bearing.Therefore, though cam interlock rocking arm repeated stock riser portions, the stress of bending etc. also be difficult to be applied to riser portions or the decompression handle on, can improve their serviceability, simultaneously, wall thickness can be made very thin, can make the decompression handle very light.In addition, because the impact force can bear cam interlock rocking arm and impact with convex surface the time, so impact force is difficult to be directly delivered on the pivot by the decompression handle, pivot does not need very high intensity.Therefore, be easy to make decompression handle or camshaft gear wheel, have again, can make decompressor at an easy rate.

As described above, the invention of being put down in writing according to technological scheme 1, owing near the intakeport of sound-insulating cover inboard, dispose controller in mode with the intakeport covering, so, the ambient air that enters from intakeport directly impacts controller, therefore, can improve the cooling effectiveness of controller, simultaneously, can suppress effectively to escape to outside noise by this controller by generations such as motors from this intakeport.In addition, because the air-flow in two air channels that the air-flow of the cooling air that produces the air-flow of the cooling air that is produced with fan by engine cooling and produced by the generating body cooling fan is formed, so can cool off more effectively, and, be configured in upstream one side owing to will wish maintenance fuel tank of lower temperature and controller etc. near intakeport, so, need not dispose shield plate of fuel tank and controller etc. and motor and generating body etc. etc., can make simple in structure.

According to the invention that technological scheme 2 is put down in writing, on the basis of above-mentioned effect, because intakeport is arranged on the facial side of the operation of sound-insulating cover, and the operator is operating a facial side, so, can suppress effectively to this operator's leaks sound.

The invention of being put down in writing according to technological scheme 3, on the basis of above-mentioned effect, because controller is flat rectangular-shaped, therefore the big big face of area can further improve cooling performance and sound insulation value towards the facial side configuration of operation.

The invention of being put down in writing according to technological scheme 4, on the basis of above-mentioned effect, since be formed with between the 1st cooling duct and the 2nd cooling duct cooling air that makes the 2nd cooling duct towards below the wind direction control device, so, the cooling air of discharging from the 2nd cooling duct can not influence the cooling air of discharging from the 1st cooling duct, can carry out exhaust reposefully, therefore, the cooling wind energy of passing cylinder in the 1st cooling duct etc. successfully flows, can improve cooling performance, and, can not interfere mutually from the wind that two cooling ducts are discharged, can reduce noise.In addition, because with the spout of this wind direction control device covering cooling fan one side, so, can shield the noise source of this fan etc., can reduce noise.

The invention of being put down in writing according to technological scheme 5, because temperature ratio engine and low fuel tank and the controller of generating body are adjoined each other, and fuel tank and controller directly be carried on the end cover, therefore, do not need with combination cover supporting fuel tank or dispose miscellaneous part in addition, so can the number of packages amount few and set fuel tank at an easy rate, and owing to can make the combination cover be independent of fuel tank ground with its separation, so, under the state that unloads the combination cover, can keep in repair at an easy rate etc.In addition, can make fuel tank and controller leave the motor and the generating body of high temperature, can reduce the influence of heat as much as possible generations such as motors.

The invention of being put down in writing according to technological scheme 6, on the basis of above-mentioned effect, because cover is disposed at the upside of cover of the above-mentioned end, constitute by a plurality of combination covers that are separated from each other out, it has: form the facial front shroud of operation, be configured in this front shroud rear side back cover and be formed with the side cover of relief opening, so, can inner member be exposed by taking these covers apart.

The invention of being put down in writing according to technological scheme 7, on the basis of above-mentioned effect, because it is flat rectangular-shaped that above-mentioned controller is, the big big face of area is towards the one side configuration of above-mentioned fore side portion, with the facial rear side that fuel tank is disposed at above-mentioned controller as the front side of operation, so, can be near being configured in the facial Direct box Configuration Control Unit of operation.

The invention of being put down in writing according to technological scheme 8, on the basis of above-mentioned effect, because from operating the left and right directions of a facial side, be configured since the order of a side by fuel tank, motor, generating body, so, therefore make cooling air from a side direction generating body one side flow, need not dispose the temperature rising that dividing plate etc. just can suppress fuel tank and controller effectively.

The invention of being put down in writing according to technological scheme 9 on the basis of above-mentioned effect, owing to be equipped with Direct box on the operation face of front shroud, is disposed controller at the downside of this Direct box, so, can effectively utilize the spatial configuration controller of Direct box downside.

Claims (9)

1. engine generator,

In sound-insulating cover, contain: generating body; Drive the motor of this generating body; At least control one of them controller of generating body and motor; Supply fuel to the fuel tank of above-mentioned motor,

In above-mentioned sound-insulating cover, be formed with intakeport and relief opening, by driving with the cooling fan of above-mentioned motor as driving source, import ambient air from above-mentioned intakeport, cool off above-mentioned controller etc., discharge hot gas from above-mentioned relief opening, the feature of this engine generator is:

With above-mentioned controller with the mode that covers this intakeport be configured in above-mentioned intakeport inboard near;

Above-mentioned intakeport is provided with the 1st, the 2nd intakeport, and above-mentioned cooling fan is provided with engine cooling fan and generating body cooling fan;

Side at above-mentioned sound-insulating cover is formed with above-mentioned the 1st intakeport, and above-mentioned engine cooling uses fan arrangement between above-mentioned fuel tank and above-mentioned motor;

By driving above-mentioned engine cooling fan, from the above-mentioned the 1st air-breathing suction ambient air, cool off with the order of fan, cylinder, baffler by above-mentioned controller, engine cooling, from above-mentioned relief opening exhaust, constitute the 1st cooling duct; Simultaneously,

Forming above-mentioned the 2nd intakeport than above-mentioned the 1st intakeport near the central position of left and right directions, with above-mentioned generating body cooling fan be configured in above-mentioned generating body near;

By driving above-mentioned generating body cooling fan, suck ambient air from above-mentioned the 2nd intakeport, cool off by the order of above-mentioned engine crankcase, generating body, from above-mentioned relief opening exhaust, constitute the 2nd cooling duct.

2. according to the engine generator of claim 1, it is characterized in that: above-mentioned intakeport is arranged on the facial side of operation of above-mentioned sound-insulating cover.

3. according to the engine generator of claim 1, it is characterized in that: above-mentioned controller is flat rectangular-shaped, and the big big face of area is towards the one side configuration of above-mentioned fore side portion.

4. according to the engine generator of claim 1, it is characterized in that: in above-mentioned relief opening one side, above-mentioned the 2nd cooling duct is configured in the downside of above-mentioned the 1st cooling duct, be formed with between this first cooling duct and above-mentioned the 2nd cooling duct make the wind of discharging from above-mentioned the 2nd cooling duct towards below the wind direction control device.

5. according to the engine generator of claim 1, it is characterized in that: above-mentioned sound-insulating cover has end cover and is configured in the cover of this end cover upside, above-mentioned fuel tank directly is carried on the above-mentioned end cover, simultaneously, above-mentioned controller be positioned at this fuel tank near, direct carrying be disposed at the above-mentioned end and cover.

6. according to the engine generator of claim 5, it is characterized in that: the above-mentioned cover that is disposed at the upside of above-mentioned end cover is made of a plurality of combination covers that are separated from each other out, and it has: form the facial front shroud of operation, be configured in this front shroud rear side back cover and be formed with the side cover of relief opening.

7. according to the engine generator of claim 5 or 6, it is characterized in that: above-mentioned controller is flat rectangular-shaped, and the big big face of area will the facial rear side that fuel tank is disposed at above-mentioned controller as the front side of operation towards the one side configuration of above-mentioned fore side portion.

8. according to the engine generator of claim 5, it is characterized in that:,, be configured by the order of above-mentioned fuel tank, above-mentioned motor, above-mentioned generating body from a side of left and right directions from the facial side of aforesaid operations.

9. according to the engine generator of claim 6, it is characterized in that: the operation face at above-mentioned front shroud sets Direct box, disposes above-mentioned controller at the downside of this Direct box.

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