General-purpose engine equipment

Abstract

To provide a general purpose engine device which achieves good controllability of a work machine when mounted on the work machine while suppressing influence of heat and vibration occurring due to driving of the engine on a battery and inhibiting increase in manufacturing costs.SOLUTION: A general purpose engine device is mounted on a work machine including a frame, an arm extending from the frame, and a handle provided at the arm and includes: a battery which is attached to the arm so as to be located between the frame and the handle in an arm extending direction; a motor which is mounted on the frame and driven by electric power supplied from the battery; an engine which is placed on the frame and includes a crank shaft configured to be rotated by driving force of the motor; and a starter switch which is attached to the handle and may switch between supply of electric power from the battery to the motor and stop of the supply.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a general-purpose engine apparatus mounted on a work machine having a frame, an arm extending from the frame, and a handle provided on the arm. [Background technology]

[0002] Each of Patent Documents 1 and 2 describes a general-purpose engine device in which a motor is driven by power supplied from a battery, and the engine is started by driving the motor. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-196720 [Patent Document 2] Japanese Patent Application Laid-Open No. 2014-148966 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the technology described in Patent Document 1, the battery is mounted on the frame together with the engine, so heat and vibrations generated by the engine's operation are transmitted to the battery, which may shorten the battery's product life.In the technology described in Patent Document 2, the battery is mounted on the handlebar away from the engine, along with the switch, which may increase manufacturing costs due to the length of the electric wires connecting the battery and the motor.In addition, installing the battery on the handlebar increases the weight of the handlebar, which may worsen the maneuverability of the work machine via the handlebar.

[0005] The present disclosure has been made in consideration of the above-mentioned problems, and aims to provide a general-purpose engine device that can achieve good maneuverability of a work machine when mounted on the work machine, while suppressing the impact on the battery of heat and vibrations generated by driving the engine and increasing manufacturing costs. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the general-purpose engine apparatus according to the present disclosure is a general-purpose engine apparatus mounted on a work machine having a frame, an arm extending from the frame, and a handle provided on the arm, and includes: a battery attached to the arm so as to be positioned between the frame and the handle in the direction in which the arm extends; a motor mounted on the frame and driven by power supplied from the battery; an engine mounted on the frame and including a crankshaft that rotates by the driving force of the motor; and a starter switch attached to the handle that can switch whether or not power is supplied from the battery to the motor. [Effects of the Invention]

[0007] The general-purpose engine device disclosed herein can suppress the impact on the battery of heat and vibrations generated by driving the engine, as well as increases in manufacturing costs, while achieving good maneuverability of the work machine when mounted on the work machine. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a diagram illustrating a schematic configuration of a work machine including a general-purpose engine device according to an embodiment. [Figure 2] FIG. 2 is a diagram illustrating a schematic configuration of an arm according to an embodiment. [Figure 3] 1 is a diagram illustrating a configuration of a metal pipe according to one embodiment. FIG. [Figure 4] FIG. 2 is a diagram illustrating a control configuration of the general-purpose engine apparatus according to the embodiment. [Figure 5]FIG. 2 is a perspective view showing a schematic configuration of a one-end fixing portion and an other-end fixing portion according to an embodiment. [Figure 6] 6 is a diagram showing an example of fixing a metal pipe using the one-end fixing portion shown in FIG. 5. FIG. [Figure 7] 6 is a diagram showing an example of fixing a metal pipe using the other end side fixing part shown in FIG. 5. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, a general-purpose engine apparatus according to an embodiment of the present disclosure will be described with reference to the drawings. The embodiment shows one aspect of the present disclosure, but does not limit the present disclosure and can be modified as desired within the scope of the technical concept of the present disclosure.

[0010] The multipurpose engine apparatus according to the present disclosure is mounted on a working machine having a frame, an arm extending from the frame, and a handle attached to the arm. In this disclosure, the working machine will be described as a brush cutter carried by a user (a so-called walk-behind brush cutter), but the working machine is not limited to a walk-behind brush cutter. Furthermore, the working machine is not limited to a brush cutter, but may be a tea harvester, a brush cutter, or the like, and the multipurpose engine apparatus is used as a power source for the tea harvester, brush cutter, or the like.

[0011] <Work machine configuration> 1 is a diagram showing a schematic configuration of a work machine 100 (brush cutter) including a multipurpose engine apparatus 1 according to one embodiment. As shown in FIG. 1, the work machine 100 includes a frame 102, an arm 104, a handle 106, a drive body 108 (cutting blade and wheels), and the multipurpose engine apparatus 1.

[0012] The frame 102 is not particularly limited as long as it is configured to be able to mount both the motor 4 and the engine 6 of the general-purpose engine device 1 described below, and may be, for example, a plate-shaped member having a plate shape, or a platform formed by forming a pipe into a loop shape.

[0013] The arm 104 extends from the frame 102. In the embodiment illustrated in FIG. 1 , the arm 104 is configured to be swingable relative to the frame 102, and is connected to the frame 102 by a hinge 109, for example. The arm 104 may swing along the traveling direction of the work machine 100 (front-rear direction), or along a direction perpendicular to the traveling direction of the work machine 100 (left-right direction). The work machine 100 may include one arm 104, or may include multiple arms 104.

[0014] FIG. 2 is a diagram schematically illustrating the configuration of an arm 104 according to one embodiment. In one embodiment, as illustrated in FIG. 2, the arm 104 includes an extension section 110 configured to be extendable and retractable along an extension direction D in which the arm 104 extends. In one embodiment, the arm 104 includes a small cylinder section 112 and a large cylinder section 114. The small cylinder section 112 and the large cylinder section 114 each have a rectangular or cylindrical shape, and the inner diameter of the large cylinder section 114 is larger than the outer diameter of the small cylinder section 112. One end of the large cylinder section 114 opposite the frame 102 side in the extension direction D is open. When the operator of the work machine 100 pushes the small cylinder section 112 toward the frame 102 side in the extension direction D, a portion 112a of the small cylinder section 112 is inserted into the large cylinder section 114, and the extension section 110 contracts. When the operator of the work machine 100 pulls the small cylinder portion 112 toward the side opposite the frame 102 in the extension direction D, the telescopic portion 110 extends. In the embodiment illustrated in FIG. 2, the small cylinder portion 112 of the arm 104 is provided with a handle 106. The large cylinder portion 114 of the arm 104 is connected to the frame 102. Note that in the embodiment illustrated in FIG. 2, the small cylinder portion 112 is located closer to the handle 106 in the extension direction D than the large cylinder portion 114, but the present disclosure is not limited to this embodiment. Although not illustrated, in some embodiments, the small cylinder portion 112 is located on the side opposite the handle 106 in the extension direction D than the large cylinder portion 114.

[0015] The handle 106 is provided on the arm 104. As illustrated in Fig. 1, the handle 106 is provided at the tip of the arm 104 on the side opposite to the frame 102 in the extension direction D. The handle 106 is configured to be able to be gripped by the operator of the work machine 100.

[0016] The driving body 108 is driven by the power of the engine 6 of the general-purpose engine device 1, which will be described later.

[0017] <General-purpose engine equipment> (composition) As shown in FIG. 1, the general-purpose engine apparatus 1 includes a battery 2, a motor 4, an engine 6, and a starter switch 8.

[0018] 2, the battery 2 is attached to the arm 104 so as to be located between the frame 102 and the handle 106 in the extension direction D. In one embodiment, the battery 2 is housed in a battery box 3 and attached to the arm 104 via the battery box 3. In one embodiment, the battery 2 is an electrical supply source for auxiliary machinery including the motor 4.

[0019] In one embodiment, as illustrated in FIG. 2 , a start point 113 where the arm 104 connects to the frame 102 is defined as a position of 0% of the length of the arm 104. The distance increases from the start point 113 toward an end point 115 where the arm 104 connects to the handle 106, and the end point 115 is defined as a position of 100% of the length of the arm 104. The start point 113 is a position of one end of the arm 104 on the frame 102 side in the extension direction D. The end point 115 is a position of the other end of the arm 104 on the opposite side from the frame 102 side in the extension direction D. The battery 2 is attached to the arm 104 so as to be located within a range R of 10% to 70% of the length of the arm 104. In one embodiment, the battery box 3 is located within the range R.

[0020] In one embodiment, the battery 2 is located closer to the frame 102 in the extension direction D than the extension portion 110. In other words, the arm 104 does not include the extension portion 110 in a portion closer to the frame 102 in the extension direction D than the battery 2.

[0021] As shown in Fig. 1, the motor 4 is mounted on a frame 102. In one embodiment, the motor 4 is housed in a motor casing 5, which is mounted on an engine casing 7 (described below). The work machine 100 includes a high-current electric wire 118 that electrically connects the battery 2 and the motor 4. The motor 4 is driven by power supplied from the battery 2 via the high-current electric wire 118.

[0022] In one embodiment, as illustrated in FIG. 1 , the general-purpose engine apparatus 1 further includes a metal tube 10 made of metal that covers a high-current electric wire 118. The metal tube 10 extends from the battery box 3 to the motor casing 5. FIG. 3 is a diagram for explaining the configuration of the metal tube 10 according to one embodiment. In one embodiment, as illustrated in FIG. 3 , the metal tube 10 includes a bellows portion 120 that has a bellows shape formed by alternately forming a plurality of mountain folds 121 and valley folds 122. In the embodiment illustrated in FIG. 3 , the entire metal tube 10 includes the bellows portion 120. In some embodiments, only a portion of the metal tube 10 includes the bellows portion 120.

[0023] 1, the engine 6 is mounted on a frame 102. In one embodiment, the engine 6 is housed in an engine casing 7, and is mounted on the frame 102 via the engine casing 7. The engine 6 includes a crankshaft 12 that rotates by the driving force of the motor 4.

[0024] The engine 6 is configured to be able to output power by burning fuel, and is, for example, a two-stroke reciprocating engine. Although not shown, the engine 6 has a cylinder in which a combustion chamber is formed to burn a mixture containing fuel and air, a piston disposed in the combustion chamber, and a connecting rod connecting the piston to the crankshaft 12.

[0025] 1, in one embodiment, the general-purpose engine system 1 further includes a charge coil 17 (power generation device) that generates power for charging the battery 2 when the engine 6 is driven. The charge coil 17 is provided in the engine 6 and is a power-generating coil that generates power when the engine 6 is driven (when the flywheel rotates). The power generated by the charge coil 17 is supplied to the battery 2 via a regulator (not shown) and charged.

[0026] 1, the general-purpose engine system 1 further includes an ignition device 19 configured to ignite the air-fuel mixture in the combustion chamber. The ignition device 19 is provided in the engine 6 and includes an ignition coil 21 and a spark plug 23. The spark plug 23 ignites and burns the air-fuel mixture in the combustion chamber by spark discharge of the high-voltage current amplified by the ignition coil 21, thereby generating a flame.

[0027] As shown in FIG. 1 , the starter switch 8 is attached to the handle 106. This starter switch 8 is configured to be able to switch whether or not power is supplied from the battery 2 to the motor 4. In one embodiment, as shown in FIG. 1 , the starter switch 8 is attached to the handle 106 separately from the battery box 3. The work machine 100 includes a low-current electric wire 119 that electrically connects the battery 2 and the starter switch 8. The starter switch 8 is a switch for starting the engine 6 and is configured, for example, as a momentary push switch. When the operator of the work machine 100 presses the starter switch 8, the low-current electric wire 119 becomes conductive. When the low-current electric wire 119 becomes conductive, power is supplied from the battery 2 to the motor 4, and the driving force of the motor 4 rotates the crankshaft 12, starting the engine 6. In other words, the motor 4 according to the present disclosure is a starter motor. On the other hand, when the operator of the work machine 100 releases the starter switch 8, the low current electric wire 119 is brought into a non-conductive state, and the power supply from the battery 2 to the motor 4 is cut off.

[0028] In one embodiment, as illustrated in Fig. 1 , the work machine 100 further includes a power switch 124 that can switch the power supply to the engine 6 ON or OFF. This power switch 124 is attached to the handle 106. The power switch 124 is configured, for example, as a rocker switch (also called a seesaw switch), and is turned ON when the engine 6 is driven, and turned OFF when the engine 6 is stopped. The power switch 124 is attached to the handle 106 separately from the battery box 3, and when the engine 6 is turned ON, a charging circuit is connected, and when the engine 6 is turned OFF, the corresponding circuit is cut off.

[0029] FIG. 4 is a diagram (circuit diagram) that schematically illustrates the control configuration of a work machine 100 (brush cutter) according to one embodiment. In one embodiment, as illustrated in FIG. 4, the general-purpose engine system 1 further includes a charge line 30 that connects the charge coil 17 and the battery 2 via a power switch 124. The charge line 30 is provided separately from a high-current electric wire 118 (discharge line) through which power is supplied (discharged) from the battery 2 to the motor 4. Specifically, the charge line 30 includes an upstream charge line 30a that connects the charge coil 17 and the power switch 124, and a downstream charge line 30b that connects the power switch 124 and the battery 2.

[0030] In one embodiment, as illustrated in FIG. 1 , the general-purpose engine device 1 further includes a one-end fixing portion 32 that fixes the metal pipe 10 to the battery box 3, and a other-end fixing portion 50 that fixes the metal pipe 10 to the engine casing 7.

[0031] The one-end fixing portion 32 fixes one end 10a of the metal pipe 10 on the battery box 3 side to the battery box 3. When the diameter of the metal pipe 10 is A, the one end 10a of the metal pipe 10 is located within a range extending from one end of the metal pipe 10 that abuts against the battery box 3 toward the other end of the metal pipe 10 to 6A (see FIG. 6). More specifically, when the diameter A of the metal pipe 10 is 18 mm, the one end 10a of the metal pipe 10 is located within a range of 12 mm to 92 mm from one end of the metal pipe 10 toward the other end.

[0032] The other end fixing part 50 fixes the other end 10b of the metal pipe 10 on the motor casing 5 side to the engine casing 7. The other end 10b of the metal pipe 10 is located within a range of 5A or more and 10A or less from the other end of the metal pipe 10 that abuts against the motor casing 5 toward one end of the metal pipe 10 (see FIG. 7). More specifically, when the diameter A of the metal pipe 10 is 18 mm, the other end 10b of the metal pipe 10 is located within a range of 100 mm or more and 180 mm or less from the other end toward one end of the metal pipe 10.

[0033] The configuration of the one-end fixing portion 32 will be described. Fig. 5 is a perspective view schematically showing the configuration of the one-end fixing portion 32 according to one embodiment. In one embodiment, as illustrated in Fig. 5, the one-end fixing portion 32 includes a bolt 34, an insertion portion 36 into which the bolt 34 is inserted, and a clamping portion 38 connected to the insertion portion 36 and configured to be able to clamp the metal pipe 10.

[0034] The insertion portion 36 has a plate shape and is formed with a bolt hole 37 penetrating the insertion portion 36. The bolt 34 is inserted into the bolt hole 37. The clamping portion 38 has a cylindrical shape and includes a main body portion 40 having a through hole 41 formed therein through which the metal pipe 10 is passed, and a connecting portion 42 connecting the main body portion 40 and the insertion portion 36. In the embodiment illustrated in FIG. 5, the insertion portion 36 and the clamping portion 38 are integrally formed with each other.

[0035] Fig. 6 is a diagram showing an example of fixing the metal tube 10 using the one-end fixing portion 32 shown in Fig. 5. In one embodiment, as shown in Fig. 6, the battery box 3 includes a case main body 44 in which the battery 2 is housed, and a flange portion 46 extending toward the frame 102 side beyond the case main body 44. The flange portion 46 is located between the case main body 44 and the arm 104. The case main body 44 and the flange portion 46 may be integrally formed with each other.

[0036] 6, one end 10a of the metal pipe 10 is clamped by the clamping portion 38, and the insertion portion 36 and the flange portion 46 are fastened to each other by the bolt 34. In other words, the one-end fixing portion 32 fixes (clamps) the one end 10a of the metal pipe 10 to the battery box 3. Although not shown, in some embodiments, the one-end fixing portion 32 fixes the one end 10a of the metal pipe 10 to the arm 104.

[0037] The configuration of the other-end fixed portion 50 will be described. In one embodiment, the other-end fixed portion 50 and the one-end fixed portion 32 have the same configuration. For this reason, in the present disclosure, the one-end fixed portion 32 shown in FIG. 5 is referred to as the other-end fixed portion 50, and description of the configuration of the other-end fixed portion 50 will be omitted.

[0038] Fig. 7 is a diagram showing an example of fixing the metal pipe 10 using the other-end fixing part 50 shown in Fig. 5. As illustrated in Fig. 7, the other end 10b of the metal pipe 10 is clamped by the clamping part 38, and the insertion part 36 and the engine casing 7 are fastened to each other by the bolt 34. In other words, the other-end fixing part 50 fixes (clamps) the other end 10b of the metal pipe 10 to the engine casing 7.

[0039] (Actions and Effects) The following describes the operation and effect of the general-purpose engine device 1 according to one embodiment of the present disclosure. According to one embodiment, the engine 6 is mounted on the frame 102, and the battery 2 is attached to the arm 104 so as to be positioned between the frame 102 and the handle 106, so that the battery 2 and the engine 6 are spaced apart. This reduces the effect on the battery 2 of heat generated by the operation of the engine 6, thereby extending the product life of the battery 2. Furthermore, because the effect on the battery 2 of vibrations generated by the operation of the engine 6 is reduced, the vibration-proof structure of the battery 2 can be simplified (reducing manufacturing costs).

[0040] According to one embodiment, the battery 2 is located closer to the frame 102 than the handle 106, and therefore the high-current electric wire 118 can be made shorter, and a decrease in performance of the high-current electric wire 118 and an increase in manufacturing costs can be suppressed compared to when the battery 2 is installed on the handle 106. Furthermore, compared to when the battery 2 is installed on the handle 106, the overall center of gravity acting on the arm 104 can be brought closer to the driver 108, and therefore good maneuverability of the work machine 100 can be achieved.

[0041] According to one embodiment, the battery 2 is attached to the arm 104 so as to be located within the range R. In other words, the battery 2 is provided near the center of the arm 104. This allows the work machine 100 to have a structure that makes it easier to maintain weight balance, compared to when the battery 2 is provided on the handle 106. Furthermore, since damage when the battery 2 falls off is smaller compared to when the battery 2 is provided on the handle 106, the strength of the battery box 3 can be reduced (the battery box 3 can be simplified).

[0042] When mowing grass with the work machine 100, obstacles such as trash may fly off. In particular, the obstacles fly around the driving body 108. There is a risk that the low-current electric wire 119 may be broken by these flying obstacles. According to one embodiment, the low-current electric wire 119 is located closer to the handle 106 than the battery 2. That is, the low-current electric wire 119 forms a wiring bundle with other wiring 125 closer to the handle 106 than the center of the arm 104. This prevents flying obstacles from hitting the low-current electric wire 119. This prevents the low-current electric wire 119 from being broken. The other wiring 125 electrically connects the starter switch 8 and the engine 6.

[0043] According to one embodiment, the high-current electric wire 118 is covered by the metal tube 10, which prevents electrical noise flowing through the high-current electric wire 118 from acting on the ignition coil 21 of the engine 6. This makes it possible to prevent malfunctions of the engine 6 (such as deviations in ignition timing).

[0044] According to one embodiment, the entire metal tube 10 includes the bellows portion 120, so that the metal tube 10 can be deformed in response to the swinging of the arm 104, thereby improving the maneuverability of the work machine 100.

[0045] According to one embodiment, the battery 2 is located closer to the frame 102 of the arm 104 than the extension / contraction section 110, which prevents the battery 2 and the high-current electric wire 118 from interfering with each other and the extension / contraction section 110. This allows the arm 104 to be extended or contracted.

[0046] According to one embodiment, as shown in FIG. 4 , the charging line 30 connects the charge coil 17 and the battery 2 via the power switch 124. When the power switch 124 switches the engine 6 ON, the circuit from the ignition coil 21 is disconnected from ground E and the charging line 30 is connected to ground E. This allows the spark plug 23 to store voltage. Furthermore, the charging line 30 is connected to ground E of the battery 2, allowing charging to begin. Meanwhile, when the starter switch 8 is pressed while the engine 6 is ON, current flows from the battery 2 to ground E through the motor 4. Releasing the starter switch 8 disconnects the circuit through the motor 4 (charging the battery 2). When the power switch 124 switches the engine 6 OFF, the ignition coil 21 is connected to ground E, stopping the power transmission to the spark plug 23 and stopping the engine 6. Furthermore, the charging line 30 is disconnected from ground E to prevent spontaneous discharge from the battery 2 to ground E.

[0047] When the work machine 100 is being operated, the metal pipe 10 may sway and collide with the battery box, potentially damaging the metal pipe 10 or the battery box 3 (particularly the waterproof seal that abuts against one end of the metal pipe 10). According to one embodiment, one end 10a of the metal pipe 10 is fixed to the battery box 3 by the one-end fixing portion 32, thereby suppressing the swaying of the one end 10a of the metal pipe 10. This makes it possible to suppress damage to the battery box 3 or the metal pipe 10 when the work machine 100 is being operated.

[0048] When the work machine 100 is being operated, there is a risk that the metal tube 10 may collide with the motor casing 5 due to the vibration of the metal tube 10, resulting in damage to the metal tube 10 or the motor casing 5. According to one embodiment, the other end 10b of the metal tube 10 is fixed to the engine casing 7 by the other-end fixing part 50, so that vibration of the other end 10b of the metal tube 10 is suppressed. Therefore, damage to the metal tube 10 or the motor casing 5 can be suppressed when the work machine 100 is being operated.

[0049] According to one embodiment, the starter switch 8 and the power switch 124 are attached to the handle 106 separately from the battery box 3. In other words, the battery 2 is not built into the handle 106, but the starter switch 8 and the power switch 124 are built into the handle 106. This simplifies the design of the handle 106 and improves the convenience of starting the engine 6.

[0050] The contents described in each of the above embodiments can be understood, for example, as follows.

[0051] [1] The general-purpose engine device (1) according to the present disclosure is A general-purpose engine apparatus (1) mounted on a work machine (100) having a frame (102), an arm (104) extending from the frame, and a handle (106) provided on the arm, a battery (2) attached to the arm so as to be positioned between the frame and the handle in the extension direction (D) of the arm; a motor (4) mounted on the frame and driven by power supplied from the battery; an engine (6) mounted on the frame and including a crankshaft (12) that is rotated by the driving force of the motor; and a starter switch (8) attached to the handle and capable of switching whether or not power is supplied from the battery to the motor.

[0052] According to the configuration described in [1] above, the engine is mounted on the frame, and the battery is attached to the arm so as to be located between the frame and the handle, so the battery and the engine are spaced apart. This reduces the impact of heat and vibrations generated by the engine's operation on the battery. Furthermore, because the battery is located closer to the frame than the handle, the high-current electric wire connecting the battery and the motor can be shorter than when the battery is located on the handle, which reduces manufacturing costs. Furthermore, the handle can be made lighter than when the battery is located on the handle, resulting in good maneuverability of the work machine.

[0053] [2] In some embodiments, in the configuration described in [1] above, The vehicle further includes a metal tube (10) made of metal that covers a high-current electric wire (118) that electrically connects the battery and the motor.

[0054] According to the configuration described in [2] above, it is possible to suppress malfunction of the engine caused by electrical noise flowing through the high-current electric wire acting on components of the engine (for example, the ignition coil).

[0055] [3] In some embodiments, in the configuration described in [2] above, The arm is configured to be swingable relative to the frame, The metal tube includes a bellows portion (120) having a bellows shape at least in a portion thereof.

[0056] According to the configuration described in [3] above, the bellows portion of the metal pipe deforms in response to the swinging of the arm, thereby improving the maneuverability of the work machine.

[0057] [4] In some embodiments, in the configuration described in [2] or [3] above, The metal tube extends from a battery box (3) that houses the battery to a motor casing (5) that houses the motor, The battery pack further includes a one-end fixing portion (32) that fixes the metal pipe to at least one of the battery box and the arm.

[0058] According to the configuration described in [4] above, it is possible to suppress damage to the battery box or the metal pipe caused by the shaking of the metal pipe due to external forces or the like when operating the work machine.

[0059] [5] In some embodiments, in the configuration described in any one of [2] to [4] above, The metal tube extends from a battery box (3) that houses the battery to a motor casing (5) that houses the motor, The metal pipe further includes an other end fixing portion (34) for fixing the metal pipe to an engine casing (7) that houses the engine.

[0060] According to the configuration described in [5] above, it is possible to suppress damage to the battery box or the metal pipe caused by the shaking of the metal pipe due to external forces or the like when operating the work machine.

[0061] [6] In some embodiments, in the configuration described in any one of [1] to [5] above, The arm includes an extension portion (110) configured to be extendable and retractable along the extension direction, The battery is located closer to the frame in the extension direction than the expansion / contraction section.

[0062] According to the configuration described in [6] above, it is possible to prevent the battery and the high-current electric cable from interfering with each other and to realize extension and contraction along the extension direction of the arm.

[0063] [7] In some embodiments, in the configuration described in any one of [1] to [6] above, a power generating device (17) that generates power for charging the battery by driving the engine; The vehicle further includes a charging line (30) that connects the power generating device and the battery via a power switch (124) that can switch the power supply of the engine on or off.

[0064] According to the configuration described in [7] above, when the engine power supply is switched off, it is possible to prevent the battery from discharging via the charging line.

[0065] [8] In some embodiments, in the configuration described in any one of [1] to [7] above, If the starting point (113) where the arm connects to the frame is defined as 0% of the length of the arm, and the length increases from the starting point to the end point (115) where the arm connects to the handle, and the end point is defined as 100% of the length of the arm, The battery is attached to the arm so as to be located within a range (R) of 10% to 70% of the length of the arm.

[0066] According to the configuration described in [8] above, the battery is provided near the center of the arm in the direction of extension of the arm, so that the work machine can be structured in a way that makes it easier to balance its weight compared to when the battery is provided on the handle. [Explanation of symbols]

[0067] 1 General-purpose engine equipment 2 Battery 3 Battery box 4 motors 5 Motor casing 6 Engine 7. Engine casing 8 Starter switch 10 metal tube 12 crankshaft 17 Charge Coil 19 Ignition system 21 Ignition coil 23 Spark plug 30 charging lines 30a upstream charging line 30b Downstream charging line 32 One end side fixed part 34 Other end fixed part 100 Work Equipment 102 frames 104 Arm 106 Handle 108 Driver 110 Telescopic part 113 Starting Point 115 End 118 High current wire 119 Low current wire 120 Bellows 124 Power switch D Arm extension direction

Claims

1. A general-purpose engine apparatus to be mounted on a work machine having a frame, an arm extending from the frame, and a handle provided on the arm, a battery attached to the arm in a state spaced apart from the frame and the handle so as to be positioned between the frame and the handle in the extension direction of the arm; a motor mounted on the frame and driven by power supplied from the battery; an engine mounted on the frame and including a crankshaft that is rotated by the driving force of the motor; a starter switch attached to the handle and capable of switching whether or not to supply power from the battery to the motor, The vehicle further includes a high-current electric wire that electrically connects the battery and the motor, and a metal tube that covers the high-current electric wire. General-purpose engine equipment.

2. The arm is configured to be swingable relative to the frame, The metal tube includes a bellows portion having a bellows shape in at least a portion thereof.

2. The general-purpose engine system according to claim 1.

3. the metal tube extends from a battery box that houses the battery to a motor casing that houses the motor; a one-end fixing portion that fixes the metal pipe to at least one of the battery box and the arm, 3. The general-purpose engine system according to claim 1 or 2.

4. the metal tube extends from a battery box that houses the battery to a motor casing that houses the motor; The engine further includes an other end fixing portion that fixes the metal pipe to an engine casing that houses the engine.

3. The general-purpose engine system according to claim 1 or 2.

5. The arm includes an extension portion configured to be extendable and contractible along the extension direction, The battery is located closer to the frame in the extension direction than the extension portion.

3. The general-purpose engine system according to claim 1 or 2.

6. a power generating device that generates power for charging the battery by driving the engine; a charging line connecting the power generating device and the battery via a power switch that can switch the power supply of the engine on or off; 3. The general-purpose engine system according to claim 1 or 2.

7. When the start point where the arm connects to the frame is defined as 0% of the length of the arm, and the length increases from the start point to the end point where the arm connects to the handle, and the end point is defined as 100% of the length of the arm, The battery is attached to the arm so as to be located within a range of 10% to 70% of the length of the arm.

3. The general-purpose engine system according to claim 1 or 2.

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