JP2004353677A5 - - Google Patents

Description

Engine working machine

  The present invention relates to a portable engine working machine in which an engine and a working machine driven by the engine are housed in a sound insulation case provided with a carrying handle.

  In such a portable engine working machine, the engine and the working machine are housed in a synthetic resin case, and a carrying handle provided on an upper portion of the case is grasped and carried. When the engine working machine is lifted by gripping the carrying handle, the weight of the engine and the working machine, which are heavy objects, is added to the bottom of the case. Therefore, the case needs to have sufficient rigidity to prevent deformation. However, if the rigidity of the case itself is to be increased, not only does the weight of the case increase and the entire engine working machine becomes heavy, but also the degree of freedom in designing the shape and material of the case is limited.

Therefore, the upper frame and the lower frame of the pair of front and rear loop frames are connected with the carrying handle and the bottom cover, respectively, to form a strong frame, and the frame is covered by supporting the engine and the working machine with this frame. A structure in which a load is not applied to the cover is proposed in Patent Document 1 below.
Japanese Patent Publication No. 21399

  However, also in the above-mentioned conventional one, it is necessary to provide sufficient rigidity to the frame body, the carrying handle and the bottom cover before and after constituting the frame in order to support the weight of the engine and the working machine, so that the weight is sufficiently reduced. In addition to the difficulty in making the frame, the shape and the material of the frame are restricted, so that there is a problem that the degree of freedom in designing is reduced.

  The present invention has been made in view of the above circumstances, and reliably supports the weight of the engine and the working machine when transporting using the carrying handle while reducing the weight of the case of the engine working machine and increasing the design flexibility. The purpose is to be able to.

To achieve the above object, according to the first aspect of the present invention, an engine having a shroud for guiding cooling air inside a case having a carrying handle at an upper portion, and an engine integrally connected to the engine. in an engine working machine that houses a working machine driven Te, the engine working machine, characterized in that fixing the head cover and a support portion formed integrally of the engine to the carrying handle of the case are proposed.

Incidentally, the generator G of the embodiment corresponds to the working machine of the present invention.

  According to the second aspect of the present invention, in addition to the configuration of the first aspect, a wind guide plate forming a wind guide path is formed integrally with the head cover in cooperation with the shroud. There has been proposed an engine working machine characterized by forming an ignition plug attachment / detachment opening for attaching / detaching an engine ignition plug.

  According to a third aspect of the present invention, in addition to the configuration of the first or second aspect, the engine is characterized in that the head cover is configured to be detachable from the outside of the shroud with the shroud mounted on the engine. A work machine is proposed.

  According to the invention set forth in claim 4, in addition to the configuration according to any one of claims 1 to 3, the working machine is a generator, and the working machine is introduced into the case by a cooling fan provided in the generator. There is proposed an engine working machine characterized in that the cooling air cools the generator, the engine and the muffler and is discharged outside the case.

According to a fifth aspect of the present invention, in addition to any one of the first to fourth aspects, the support portion is fixed to the carrying handle via a vibration isolating member. Machine is proposed.

Incidentally, the rubber bush 85 of the embodiment corresponds to the vibration isolating member of the present invention.

According to the first aspect, since the fixed support portion provided on the head cover integral with engine carrying handle of the case, carrying without acting on the case the weight of the engine and the working machine when lifting the carrying handle Directly supported by the handle. Therefore, not only the weight reduction is enabled it unnecessary to specially reinforce the case, design flexibility of the case of the shape and material are you increase.

  According to the configuration of the second aspect, since the wind guide plate forming the air guide path is formed integrally with the head cover in cooperation with the shroud, the flow of the cooling air in the shroud can be made smooth. Moreover, since the spark plug attachment / detachment opening is formed in the air guide plate, the attachment / detachment work of the ignition plug can be easily performed with the shroud attached.

  According to the configuration of the third aspect, the head cover can be detached from the outside of the shroud while the shroud is mounted on the engine, so that maintenance of the valve operating mechanism and the like inside the head cover can be easily performed.

  According to the configuration of claim 4, when the generator is driven by the engine, the cooling fan provided in the generator rotates, and the cooling air introduced into the case cools the generator, the engine, and the muffler, and moves out of the case. Since the exhaust gas is discharged, a single cooling fan can be used to ventilate the inside of the case and cool the generator, engine, and muffler, which are heating elements. Moreover, since the engine is doubly covered by the shroud and the case, noise and air noise of the engine can be effectively reduced.

According to the configuration of the fifth aspect, since the support portion provided integrally with the head cover is fixed to the carrying handle of the case via the vibration isolating member, the vibration of the engine transmitted to the carrying handle by the vibration isolating member is provided. Can be reduced, and the case can be prevented from resonating due to engine vibration.

  Hereinafter, embodiments of the present invention will be described based on examples of the present invention illustrated in the accompanying drawings.

  1 to 13 show an embodiment of the present invention. FIG. 1 is an overall side view of an engine generator, FIG. 2 is a view taken along line 2-2 of FIG. 1, and FIG. 3 is a sectional view taken along line 4-4 of FIG. 2, FIG. 5 is a sectional view taken along line 5-5 of FIG. 3, FIG. 6 is a view taken in the direction of arrow 6 in FIG. 3, and FIG. 8 is a sectional view taken along the line 8-8 in FIG. 3, FIG. 9 is a view in the direction of the arrow 9 in FIG. 3, FIG. 10 is an enlarged view of a part 10 in FIG. 3, and FIG. FIG. 12 is an enlarged view of a part 12 in FIG. 5, and FIG. 13 is an exploded perspective view of the engine generator.

As shown in FIG. 1 to FIG. 4 and FIG. 13, a synthetic resin case 11 constituting an outer shell of the engine generator that generates electric power by driving the electric generator G by the engine E includes a left side cover 12, a right side cover 13, a front cover 14, a rear cover 15, and an under cover 16. A carrying handle 17 for carrying the engine generator is provided above the left side cover 12 and the right side cover 13 which are integrally connected. Inside the carrying handle 17, ribs 17 ₁ for reinforcement are provided. It is formed in a lattice shape (see FIGS. 3 and 4). The left side cover 12 is formed a spark plug replacement lid 12 ₁ and the slit-shaped cooling air inlet 12 ₃ ... it is the maintenance lid 13 ₁ is formed in the right side cover 13. An operation panel 18 provided on the front cover 14, a control unit 19 provided at the rear of the operation panel 18 to control the operation of the engine E and the generator G, and an output frequency of the generator G provided at the rear of the control unit 19 And an inverter unit 20 for controlling the power supply. An exhaust gas outlet 15 ₁ for discharging exhaust gas from the engine E to the rear cover 15, and the cooling air discharge port 15 ₂ is provided for discharging the cooling air from the case 11. The under cover 16 is provided with four rubber supporting legs 21 which come into contact with the ground or the floor when the engine generator is installed.

  The operation panel 18, control unit 19 and inverter unit 20, which constitute the control system of the engine generator, are collectively arranged on the front cover 14, so that not only can the length of the wire harness be reduced, but also the control can be performed simply by removing the front cover 14. System maintenance can be performed collectively.

A left reinforcing frame 26 and a right reinforcing frame 27 made of FRP, each of which is formed in an inverted L-shape, are provided at a front portion of the case 11. Left reinforcing frame 26 fixed to the left side of the undercover 16 in the lower end bolt 28 rises upward and lateral directions inwardly along the inner surface of the left side cover 12, mounting portions 26 ₁ bent upward at its upper end is formed You. The right reinforcing frame 27 fixed to the right side of the undercover 16 a lower end with a bolt 29 rises upward and lateral directions inwardly along the inner surface of the right side cover 13, mounting portions 27 ₁ bent upward to its upper end forming Is done. The left reinforcing frame 26 and the right reinforcing frame 27 have a gate shape as a whole, and the superposed mounting portions 26 ₁ and 27 ₁ are sandwiched between the left side cover 12 and the right side cover 13 at the front of the carrying handle 17. In this state, the bolt 30a inserted from the left side cover 12 side is screwed into the embedded nut 30b of the right side cover 13 and fastened together (see FIG. 8).

A rubber seal member 31 is attached to a portion where the upper surfaces of the left side cover 12, the right side cover 13 and the front cover 14 meet, and a fuel supply port 32 ₁ of a fuel tank 32 arranged above the inverter unit 20 is an opening 31 ₁ of the sealing member 31 from downwardly through the upper is closed by a removable cap 33. By the projection 32 _2, 32 ₃ provided on the left and right sides of the fuel tank 32, loosely fit in the fuel tank supporting portions 26 _2, 27 ₂ formed on the reinforcing frame 26, 27 of the left and right fuel tank 32 Positioned so that it does not swing. A rubber lower vibration isolator 34 provided on the upper surface of the inverter unit 20 faces the lower surface of the fuel tank 32 with a small gap. When the fuel tank 32 supplied with fuel swells and deforms downward by weight, the lower surface of the fuel tank 32 contacts the upper surface of the lower vibration isolator 34, and the weight is supported by the inverter unit 20.

  As described above, since the fuel tank 32 is sandwiched and supported by the left side cover 12 and the right side cover 13 from the left and right, there is no need to attach or detach bolts or the like, and the left side cover 12 and the right side cover 13 are not required. , The fuel tank 32 can be attached and detached. Moreover, since the fuel tank 32 is surrounded by the left and right reinforcing frames 26 and 27, protection against external impact can be achieved. Since the left and right reinforcing frames 26 and 27 do not cover the entirety of the engine generator, the weight does not increase significantly.

An electric fuel pump 35 for supplying fuel in the fuel tank 32 to the engine E is provided on an upper inner surface of the right reinforcing frame 27, and a fuel cock for shutting off fuel supplied to the engine E is provided on a lower outer surface. 36 and an engine switch 42 are provided. Operating knob 36 ₁ for opening and closing the fuel cock 36 is exposed to the outside through the right side cover 13. Since the fuel pump 35 and the fuel cock 36 are supported by using the right reinforcing frame 27 in this manner, a special support member is not required, which can contribute to a reduction in the number of parts. Moreover, since the fuel supply systems such as the fuel tank 32, the fuel pump 35, and the fuel cock 36 are collectively supported by the left and right reinforcing frames 26, 27 instead of the left and right side frames 12, 13, the fuel supply systems are maintained. In doing so, the left and right side frames 12, 13 can be easily removed.

  4, a fuel tube 37 supplies fuel from the fuel tank 32 to the fuel cock 36, a fuel tube 38 supplies fuel from the fuel cock 36 to the fuel pump 35, and a fuel tube 39 supplies fuel from the fuel pump 35 to the carburetor 41. Is a tube for transmitting the pulsation of the crankcase internal pressure of the engine E to a diaphragm (not shown) in the fuel pump 35 to drive the fuel pump 35.

  Next, the structure of the power generation unit 46 in which the engine E and the generator G are integrated will be described with reference to FIGS.

As is apparent from FIG. 7, the four-cycle single-cylinder engine E in which the axis of the crankshaft 47 is arranged in the front-rear direction includes a crankcase 48, a cylinder block 49, a cylinder head 50, and a head cover 51. Crankcase 48 is coupled 2 is divided by bolts 52 ... back and forth division surface 48 ₁ which is 45 ° relative to the axis of the crankshaft 47, and the first half of the crankcase 48, a cylinder block 49, The cylinder head 50 is integrally formed. The head cover 51 is detachably connected to the cylinder head 50 with four bolts 53.

An outer rotor type generator G provided in a cantilever manner at the shaft end of a crankshaft 47 protruding forward from the crankcase 48 includes a stator including coils 54 fixed to the front surface of the crankcase 48, and a crankshaft. And a rotor composed of permanent magnets 56 which are fixed to the inner peripheral surface of a flywheel 55 fixed to 48 and face the outer peripheral surfaces of the coils 54. A cooling fan 57 is coaxially fixed to the front surface of the flywheel 55. The carburetor 41 is disposed on the right side of the cylinder head 50 of the engine E, and further in front of the carburetor 41, an air cleaner 59 (see FIGS. 5 and 9) is connected via an intake pipe 58. A box-shaped muffler 61 connected to the rear end of an exhaust pipe 60 extending rearward from the left side of the cylinder head 50 of the engine E is connected to the rear of the engine E by three bolts 62, 62, 63 (see FIG. 6). Fixed to. Exhaust port 61 ₁ formed on the rear surface of the muffler 61, faces the exhaust gas outlet 15 ₁ of the rear cover 15 (see FIG. 7).

  The shroud 66 made of synthetic resin covering the periphery of the engine E is divided into a left shroud half 67 and a right shroud half 68, and the left shroud half 67 is fixed to the crankcase of the engine E by two bolts 69,69. The right shroud half 68 is fastened to the crankcase 48 of the engine E and the right side of the cylinder block 49 by two bolts 70, 70 (see FIGS. 3 and 5). (See FIGS. 4 and 5).

  The front and rear surfaces of the shroud 66 are open, and the outer periphery of the muffler 61 fits into the rear opening with a gap, and the aluminum die-cast fan cover 71 fits over the front opening. . The fan cover 71 covering the generator G and the cooling fan 57 has its upper part fastened to the cylinder head 50 of the engine E with bolts 72 and its lower part fastened to the crankcase 48 of the engine E with two bolts 73, 73. (See FIGS. 7 and 8).

A recoil starter 75 is fixed to the central opening of the fan cover 71 with three bolts 74. The recoil starter 75 includes a reel 77 rotatably supported by a recoil starter cover 76, a cable 78 having one end wound around the reel 77 and the other end penetrating the right reinforcing frame 27 and the right cover 13, and the other end of the cable 78. It includes an operation knob 79 provided, and a disengaging drive member 80 provided on the reel 77 to the cooling fan 57 and the driven member 57 ₁ integral (see FIGS. 7 and 8). The recoil starter cover 76 cooling air inlet 76 ₁ ... are formed, the cooling air inlet 64 is also formed between the front lower portion of the lower end and the shroud 66 of the recoil starter cover 76 (see FIG. 7).

When pulling the cable 78 to rotate the reel 77 in the operating knob 79, the driving member 80 actuated by a cam mechanism (not shown) rotates the cooling fan 57 in engagement with the driven member 57 _1, flywheel fan 57 The engine E can be started by cranking the crankshaft 47 connected via 55. Operation knob release the 79 and the driving member 80 is disengaged from the driven member 57 _1, the reel 77 returns reversely rotated with the return spring (not shown) while winding the cable 78 to the original position.

As is apparent from FIGS. 9 and 10, the left shroud half 67, the opening 81 ₁ of the rectangle are formed so as to be surrounded by the right shroud half 68 and the fan cover 71, the engine E through the opening 81 ₁ The head cover 51 projects outside the shroud 66. Baffle plate 51 ₁ extending obliquely forward and downward at the front of the head cover 51 are formed integrally, the air guide plate 51 ₁ and the notch 50 formed on the front upper surface of the cylinder head 50 ₁ (FIG. 9 (See FIG. 10). The spark plug attaching and detaching bore 51 ₂ formed in a central portion of the air guide plate 51 _1, a spark plug 83 and the guide member 84 is mounted for detachably attached to the cylinder head 50, the upper end opening of the guide member 84 is removably Closed by the cap 84 ₁ . Note that an ignition coil 65 is provided at the upper end of the fan cover 71 close to the ignition plug 83.

Guide member 84 (see FIG. 2) because it faces the spark plug replacement lid 12 ₁ of the left side cover 12, simply by removing the cap 84 ₁ by opening the spark plug replacement lid 12 _1, the spark plug attaching and detaching bore 51 ₂ can be easily perform maintenance of the ignition plug 83 via the. If the left side cover 12 and the right side cover 13 are removed, the head cover 51 exposed from the shroud 66 can be removed without removing the left shroud half 67 and the right shroud half 68, and the movement covered by the head cover 51 can be achieved. Maintenance of the valve mechanism, for example, adjustment of tappet clearance and the like can be easily performed.

7, as apparent from FIGS. 10 and 11, plate-shaped support portion 51 ₃ extending in the front-rear direction on the upper surface of the head cover 51 of the engine is protruded. A circular support hole 51 ₄ formed in the center of the supporting portion 51 ₃ is fitted pair of left and right rubber bushings 85, 85, collar 86 is inserted through their internal. Bolts 87a inserted from the left side cover 12 at the rear of the carrying handle 17 are fastened to embedded nuts 87b provided on the right side cover 13, and inner surfaces of the left side cover 12 and the right side cover 13 near the bolts 87a. Bosses 12 ₂ and 13 ₂ are protruded, respectively. With both ends of the right and left rubber bushes 85, 85, the washers 88, 88 are disposed on both ends of the washer 88, 88 and the connecting pin 89 penetrating the collar 86. 12 _2, 13 ₂ to be fitted.

As is clear from FIGS. 6, 7 and 12, the mounting bracket 91 is fixed to the rear lower portion of the crankcase 48 of the engine E with two bolts 90, 90. Mounting bracket 91 protrudes to the outside from the bottom of the opening 81 ₂ after the shroud 66, there pair of rubber bushings 92, 92 are fitted. A pair of left and right mounting ribs 16 ₁ on the rear upper surface of the undercover 16 of the case 11, 16 ₁ are formed, the the central portion outer periphery of the collar 93 bridging between the pair of mounting ribs 16 _1, 16 ₁ rubber bush 92 , 92 are supported via a pair of right and left washers 95, 95. And by fastening a bolt 94a which is inserted from the boss 13 ₃ of the right side cover 13 through the color 93 to the built-in nut 94b provided in the boss 12 ₃ of the left side cover 12, after the engine E to be exposed from the shroud 66 The lower portion is elastically supported by the under cover 16 via the rubber bushes 92,92.

7 As is apparent from, the mounting bracket 71 ₁ in the lower portion of the fan cover 71 is formed integrally, the mounting bracket 71 ₁ is the pair of left and right mounting ribs 16 ₂ projecting from the front upper surface of the undercover 16 , it is elastically supported through a bolt 94a to 16 _2. The support structure of the mounting bracket 71 ₁ is substantially the same as the support structure of the mounting bracket 91 described with reference to FIG.

  As described above, the power generation unit 46 has the upper head cover 51 elastically supported by the carrying handle 17 via the rubber bushes 85, 85, and the rear lower crankcase 48 elastically supported by the undercover 16 via the rubber bushes 92, 92. Supported, the lower front fan cover 71 is elastically supported by the under cover 16 via the rubber bushes 92, 92, so that the weight of the power generation unit 46 is distributed to the respective parts of the case 11 and is partially applied to the case 11. Concentration of the load can be prevented. Further, the vibration absorbing action of the rubber bushes 85, 85; 92... Not only prevents the vibration of the engine E from being transmitted to the carrying handle 17 but also prevents the case 11 from resonating due to the vibration of the engine E. can do.

In particular, when lifting the carrying handle 17 to carry the engine generator, most of the weight of the power generating unit 46 including the engine E and the generator G, the rubber bushing 85, 85 from the support portion 51 ₃ of the head cover 51, the connecting pin It is supported by the carrying handle 17 of the case 11 via 89 and the bosses 12 ₂ and 13 ₂ . That is, the power generation unit 46 is directly suspended by the carrying handle 17, and the case 11 does not need to support the weight of the power generation unit 46. Therefore, the thickness of the case 11 connected below the carrying handle 17 is reduced. Not only can it be reduced to reduce the weight, but also the degree of freedom in designing the shape and material of the case 11 is greatly increased.

In addition, since the head cover 51 projecting upward from the opening 81 _{1 on} the upper surface of the shroud 66 is supported by the carrying handle 17, the head cover 51 is completely covered by the shroud 66 and the upper end of the shroud 66 is supported by the carrying handle 17. In comparison, the overall height of the engine generator can be kept low.

  By the way, when the carrying handle 17 is lifted, most of the weight of the power generation unit 46 is added to the rear part of the carrying handle 17 via the head cover 51 of the engine E, so that a bending load is applied to the carrying handle 17 and the case 11 in the vicinity thereof. Works. However, the lower part of the power generation unit 46, that is, the lower part of the fan cover 71 and the front part of the under cover 16 that supports the lower part of the crankcase 48, are in front of the carrying handle 17 via the high rigidity left reinforcing frame 26 and right reinforcing frame 27. The load is distributed to the front and rear of the carrying handle 17 without causing the left side cover 12 and the right side cover 13 to bear the load, and the bending load applied to the carrying handle 17 and the case 11 in the vicinity thereof is reduced. Can be reduced.

Further, a fan cover 71 made of aluminum die-cast is fastened to the crankcase 48 and the cylinder head 50 to form a block, and a mounting bracket 91 of the crankcase 48 and a mounting bracket 71 ₁ of the fan cover 71 protruding from a shroud 66 covering the outer periphery thereof. Since the power generation unit 46 is supported by the mounting ribs 16 ₁ , 16 ₁ ; 16 ₂ , 16 ₂ of the under cover 16 via the rubber bushes 92, 92, the power generation unit 46 can be mounted without a special support member such as an engine bed. The under cover 16 can be reliably supported.

  When the engine generator is installed on the ground or floor, most of the weight of the power generation unit 46 is directly transmitted to the undercover 16 having the support legs 21. Even if the stiffness is set low, no deformation occurs due to the load.

  Furthermore, the left side cover 12 and the right side cover 13 can be separated from the under cover 16 by simply removing the four bolts 30a, 87a, 94a, 94a with the engine generator installed on the ground or floor. Therefore, it is possible to easily perform maintenance by exposing the engine E and the generator G without turning the engine generator over.

  Next, an operation related to cooling of the engine generator will be described.

When the generator E is driven by operating the engine E, the cooling fan 57 provided on the flywheel 55 of the generator G rotates in the shroud 66. External air passes through the cooling air introduction openings 14 ₁ and 14 ₂ (see FIGS. 3 and 4) of the front cover 14 due to the negative pressure generated by the rotation of the cooling fan 57 and forms cooling air inside the case 11. be introduced. Reference numeral 14 ₃ denotes a guide of the cooling air introduced from the air introduction opening 14 _2. The cooling air passes through the cooling air inlets 76 ₁ ... formed in the recoil starter cover 76 and the cooling air inlet 64 formed below the recoil starter cover 76, and is introduced into the fan cover 71 and the shroud 66. generator G housed therein, after cooling the engine E and the muffler 61 is discharged from the shroud 66 and passes through the gap between the muffler 61 cooling air discharge port 15 ₂ formed rear cover 15 to the outside of the case 11 You. Openings 66 (see FIG. 7) are formed in the flywheel 55 and the cooling fan 57, and the heated air in the generator G is sucked into the shroud 71 through the openings 66.

When flowing inside the shroud 66 cooling air, air guide plate 51 ₁ formed integrally on the head cover 51 of the engine E fan cover 71, in cooperation with the left shroud half 67 and the right shroud half 68 air guide path With the configuration of 82, the flow of the cooling air in the shroud 66 can be made smooth to enhance the cooling effect. In addition, since the cooling air flows directly through the inside of the aluminum die-cast face cover 71 connected to the engine E, the face cover 71 functions as a heat sink and the cooling performance of the engine E is enhanced.

  Since the generator G, the engine E, and the muffler 61, which are heating elements, are cooled while the cooling air flows in the case 11 substantially linearly from the front to the rear, the cooling resistance is suppressed while suppressing the flow resistance. Not only can the efficiency be increased, but also the number of cooling fans 57 can be reduced to one and the number of parts can be reduced. In addition, the noise generated by the engine E and the cooling fan 57 is effectively reduced by the shroud 66 and the case 11 which cover them doubly, so that the engine generator can be operated quietly.

  The embodiments of the present invention have been described above. However, various design changes can be made in the present invention without departing from the gist thereof.

  For example, in the embodiment, the generator G is illustrated as a working machine, but the present invention can be applied to other working machines such as a compressor and a pump. Further, in the embodiment, the rubber bushes 85, 85 have been exemplified as the elastic members, but other elastic members such as springs can be employed. Although the carrying handle 17 is configured as a part of the case 11 in the embodiment, the carrying handle 17 may be configured as a separate member and attached to the case 11.

Overall side view of engine generator FIG. 1 is a view taken along line 2-2 of FIG. 2 is a sectional view taken along line 3-3 in FIG. FIG. FIG. 3 is a sectional view taken along line 5-5 of FIG. FIG. View taken along line 7-7 in FIG. Sectional view along line 8-8 in FIG. FIG. Enlarged view of part 10 in FIG. Sectional view taken along line 11-11 of FIG. 12 part enlarged view of FIG. Exploded perspective view of an engine generator

Explanation of reference numerals

11 Case 17 Carrying handle 48 Crank case 49 Cylinder block 50 Cylinder head 51 ₁ Head cover 51 ₁ Air guide plate 51 ₂ Ignition plug attaching / detaching port 51 ₃ Supporting part 57 Cooling fan 61 Muffler 66 Shroud 81 ₁ Opening 82 Air guide path 83 Ignition plug 85 Rubber Bush (anti-vibration member)
E Engine G Generator (work equipment)

Claims (5)

An engine (E) provided with a shroud (66) for guiding cooling air inside a case (11) provided with a carrying handle (17) at an upper part, and a work driven integrally connected to the engine (E) Machine (G) and the engine working machine
Engine working machine, characterized in that fixed to the carrying handle (17) of the head cover (51) supporting part provided integrally with (51 ₃₎ a case (11) of said engine (E). Air guide plate constituting the air guide path (82) and (51 ₁₎ formed integrally with the head cover (51) in cooperation with the shroud (66), the engine (E) to the baffle plate (51 ₁₎ The engine working machine according to claim 1, characterized in that an ignition plug attachment / detachment opening (51 ₂ ) for attaching / detaching the ignition plug (83) is formed.   The engine working machine according to claim 1 or 2, wherein a head cover (51) is detachable from the outside of the shroud (66) while the shroud (66) is mounted on the engine (E).   The working machine is a generator (G), and the cooling air introduced into the case (11) by the cooling fan (57) provided in the generator (G) is a generator (G), an engine (E) and The engine working machine according to any one of claims 1 to 3, wherein the muffler (61) is cooled and discharged to the outside of the case (11). The support (51) _Three 5) The engine working machine according to any one of claims 1 to 4, characterized in that the) is fixed to the carrying handle (17) via a vibration isolating member (85).