JP2024067518A - General-purpose engine equipment - Google Patents

Abstract

The present invention provides a battery control system that realizes good maneuverability of a work machine when mounted on the work machine, while suppressing the effects on the battery of heat and vibrations generated by the operation of an engine and increases in manufacturing costs.
[Solution] A general-purpose engine device mounted on a work machine having a frame, an arm extending from the frame, and a handle attached to the arm comprises a battery attached to the arm 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 rotates by the driving force of the motor, and a starter switch attached to the handle and capable of switching whether or not to supply power from the battery to the motor.
[Selected Figure] Figure 1

Description

This disclosure relates to a general-purpose engine device that is mounted on a work machine having a frame, an arm extending from the frame, and a handle attached to the arm.

Patent Document 1 and Patent Document 2 each describe a general-purpose engine device that drives a motor using power supplied from a battery, and starts the engine by driving this motor.

JP 2014-196720 A JP 2014-148966 A

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 being driven 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 handle away from the engine together with the switch, which may increase manufacturing costs due to longer wires connecting the battery and motor. In addition, installing the battery on the handle increases the weight of the handle, which may worsen the maneuverability of the work machine via the handle.

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 the engine's operation and increases in manufacturing costs.

To achieve the above object, the general-purpose engine device disclosed herein is a general-purpose engine device 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 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 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.

The general-purpose engine device disclosed herein can suppress the impact on the battery of heat and vibrations generated by the engine's operation and increases in manufacturing costs, while achieving good maneuverability of the work machine when mounted on the work machine.

1 is a diagram illustrating a schematic configuration of a work machine including a general-purpose engine device according to an embodiment. FIG. 2 is a diagram illustrating a schematic configuration of an arm according to an embodiment. FIG. 2 is a diagram for explaining a configuration of a metal tube according to one embodiment. FIG. 2 is a diagram illustrating a control configuration of the general-purpose engine system according to one embodiment. FIG. 2 is a perspective view showing a schematic configuration of a one end side fixing portion and an other end side fixing portion according to an embodiment. 6 is a diagram showing an example of fixing a metal pipe using the one-end fixing portion shown in FIG. 5 . 6 is a diagram showing an example of fixing a metal pipe using the other end side fixing part shown in FIG. 5 .

A general-purpose engine device according to an embodiment of the present disclosure will be described below with reference to the drawings. This embodiment shows one aspect of the present disclosure and does not limit the disclosure, and can be modified as desired within the scope of the technical concept of the present disclosure.

The general-purpose engine device 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, an example will be described in which the working machine is a grass cutter carried by the user (a so-called walk-behind grass cutter), but the working machine is not limited to a walk-behind grass cutter. In addition, the working machine is not limited to a grass cutter, and may be a tea cutter, a brush cutter, etc., and the general-purpose engine device is used as a power source for the tea cutter, brush cutter, etc.

<Configuration of the work machine>
1 is a diagram showing a schematic configuration of a work machine 100 (grass cutter) including a general-purpose 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 driving body 108 (a cutting blade and wheels), and the general-purpose engine apparatus 1.

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 of pipes in a loop shape.

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, for example, a hinge 109. The arm 104 may swing along the travel direction (front-rear direction) of the working machine 100, or may swing along a direction (left-right direction) perpendicular to the travel direction of the working machine 100. The working machine 100 may include one arm 104 or multiple arms 104.

2 is a diagram showing a schematic configuration of the arm 104 according to one embodiment. In one embodiment, as shown in FIG. 2, the arm 104 includes a telescopic section 110 configured to be telescopic along the extension direction D in which the arm 104 extends. In one embodiment, the arm 104 includes a small tube section 112 and a large tube section 114. Each of the small tube section 112 and the large tube section 114 has a rectangular tube shape or a cylindrical shape, and the inner diameter of the large tube section 114 is larger than the outer diameter of the small tube section 112. One end of the large tube section 114 on the opposite side to the frame 102 side in the extension direction D is open. When the small tube section 112 is pushed toward the frame 102 side in the extension direction D by the operator of the working machine 100, a part 112a of the small tube section 112 is inserted into the large tube section 114, and the telescopic section 110 is contracted. When the operator of the work machine 100 pulls the small tube 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 tube portion 112 of the arm 104 is provided with a handle 106. The large tube portion 114 of the arm 104 is connected to the frame 102. Note that, in the embodiment illustrated in FIG. 2, the small tube portion 112 is located closer to the handle 106 in the extension direction D than the large tube portion 114, but the present disclosure is not limited to this embodiment. Although not illustrated, in some embodiments, the small tube portion 112 is located closer to the handle 106 in the extension direction D than the large tube portion 114.

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

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.

<General-purpose engine device>
(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 .

As shown in FIG. 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 is attached to the arm 104 via the battery box 3. In one embodiment, the battery 2 is an electrical supply source for the auxiliary machinery including the motor 4.

2, the starting point 113 where the arm 104 connects to the frame 102 is defined as 0% of the length of the arm 104. The starting point 113 increases from the starting point 113 toward the end point 115 where the arm 104 connects to the handle 106, and the end point 115 is defined as 100% of the length of the arm 104. The starting point 113 is one end of the arm 104 on the frame 102 side in the extension direction D. The end point 115 is the other end of the arm 104 on the opposite side to 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.

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

The motor 4 is mounted on the frame 102 as shown in FIG. 1. 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.

In one embodiment, as illustrated in FIG. 1, the general-purpose engine device 1 further includes a metal tube 10 made of metal that covers the high-current electric wire 118. This 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 having a bellows shape formed by alternating multiple 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.

As shown in FIG. 1, the engine 6 is mounted on the 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.

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, such an 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 that connects the piston to the crankshaft 12.

In one embodiment, as shown in FIG. 1, the general-purpose engine device 1 further includes a charge coil 17 (power generation device) that generates power for charging the battery 2 by driving the engine 6. The charge coil 17 is provided on the engine 6 and is a power generating coil that generates power by driving the engine 6 (rotation of the flywheel). The power generated by the charge coil 17 is supplied to the battery 2 via a regulator (not shown) and charged.

In one embodiment, as illustrated in FIG. 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 an ignition plug 23. The ignition 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, generating a flame.

The starter switch 8 is attached to the handle 106 as shown in FIG. 1. The starter switch 8 is configured to be able to switch whether or not to supply power from the battery 2 to the motor 4. In one embodiment, as illustrated in FIG. 1, the starter switch 8 is attached to the handle 106 separately from the battery box 3. The working 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 working machine 100 presses the starter switch 8, the low-current electric wire 119 is in a conductive state. When the low-current electric wire 119 is in a conductive state, power is supplied from the battery 2 to the motor 4, and the crankshaft 12 is rotated by the driving force of the motor 4 to start the engine 6. In other words, the motor 4 according to the present disclosure is a starter motor. On the other hand, if the operator of the work machine 100 releases the starter switch 8, the low current electric wire 119 becomes non-conductive, and the power supply from the battery 2 to the motor 4 is cut off.

In one embodiment, as illustrated in FIG. 1, the work machine 100 further includes a power switch 124 that can switch the power supply of 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.

Figure 4 is a schematic diagram (circuit diagram) showing the control configuration of a work machine 100 (grass trimmer) according to one embodiment. In one embodiment, as shown in Figure 4, the general-purpose engine device 1 further includes a charging line 30 that connects the charge coil 17 and the battery 2 via a power switch 124. The charging 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 charging line 30 includes an upstream charging line 30a that connects the charge coil 17 and the power switch 124, and a downstream charging line 30b that connects the power switch 124 and the battery 2.

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 tube 10 to the battery box 3, and an other-end fixing portion 50 that fixes the metal tube 10 to the engine casing 7.

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

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

The configuration of the one-end fixing part 32 will be described. Figure 5 is a perspective view showing a schematic configuration of the one-end fixing part 32 according to one embodiment. In one embodiment, as shown in Figure 5, the one-end fixing part 32 includes a bolt 34, an insertion part 36 through which the bolt 34 is inserted, and a clamping part 38 connected to the insertion part 36 and configured to be able to clamp the metal pipe 10.

The insertion portion 36 has a plate shape, and a bolt hole 37 is formed through the insertion portion 36. The bolt 34 is inserted through this bolt hole 37. The clamping portion 38 has a cylindrical shape and includes a main body portion 40 having a through hole 41 through which the metal pipe 10 passes, and a connection portion 42 that connects 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 configured with each other.

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

As illustrated in FIG. 6, one end 10a of the metal tube 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 tube 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 tube 10 to the arm 104.

The configuration of the other end fixing part 50 will be described. In one embodiment, the other end fixing part 50 and the one end fixing part 32 have the same configuration. For this reason, in this disclosure, the one end fixing part 32 shown in FIG. 5 is referred to as the other end fixing part 50, and a description of the configuration of the other end fixing part 50 will be omitted.

Figure 7 is a diagram showing an example of fixing the metal pipe 10 using the other end fixing part 50 shown in Figure 5. As illustrated in Figure 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.

(Action and Effects)
The action and effect of the general-purpose engine device 1 according to one embodiment of the present disclosure will be described. 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 located between the frame 102 and the handle 106, so that the battery 2 and the engine 6 are spaced apart from each other. This makes it possible to suppress the effect of heat generated by the operation of the engine 6 on the battery 2, and to extend the product life of the battery 2. In addition, since the effect of vibrations generated by the operation of the engine 6 on the battery 2 is suppressed, the vibration isolation structure of the battery 2 can be simplified (reduced manufacturing costs).

According to one embodiment, the battery 2 is located closer to the frame 102 than the handle 106, so that the high current electric wire 118 can be made shorter and performance degradation of the high current electric wire 118 and 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 driving body 108, so good maneuverability of the work machine 100 can be achieved.

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 balance the weight, compared to when the battery 2 is provided on the handle 106. Also, 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).

When mowing with the work machine 100, obstacles such as garbage fly around. In particular, the obstacles fly around the driving body 108. The low-current electric wire 119 may be broken by the flying obstacles. According to one embodiment, the low-current electric wire 119 is located closer to the handle 106 than the battery 2. In other words, 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.

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).

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, improving the maneuverability of the work machine 100.

According to one embodiment, the battery 2 is located closer to the frame 102 side of the arm 104 than the extension/retraction section 110, preventing the battery 2 and the high-current electric wire 118 from interfering with the extension/retraction section 110. This allows the arm 104 to extend and retract.

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 power supply of the engine 6 to ON, the circuit from the ignition coil 21 is disconnected from the earth E, and the charging line 30 is connected to the earth E. Thus, the ignition plug 23 is in a state in which it can store voltage. In addition, the charging line 30 is connected to the earth E of the battery 2, so that charging can be started. On the other hand, when the starter switch 8 is pressed while the power supply of the engine 6 is ON, the current from the battery 2 flows to the earth E through the motor 4. When the starter switch 8 is released, the circuit through the motor 4 is disconnected (the battery 2 is charged). When the power supply of the engine 6 is switched to OFF by the power switch 124, the ignition coil 21 is connected to the earth E, the transmission of power to the ignition plug 23 is stopped, and the engine 6 is stopped. In addition, the charging line 30 is disconnected from the earth E to prevent natural discharge from the battery 2 to the earth E.

When operating the work machine 100, the metal tube 10 may sway and collide with the battery box, which may damage the metal tube 10 or the battery box 3 (particularly the waterproof seal that abuts against one end of the metal tube 10). According to one embodiment, one end 10a of the metal tube 10 is fixed to the battery box 3 by the one-end fixing portion 32, so that the swaying of one end 10a of the metal tube 10 is suppressed. Therefore, damage to the battery box 3 or the metal tube 10 can be suppressed when operating the work machine 100.

When operating the work machine, the vibration of the metal tube 10 may cause the metal tube 10 to collide with the motor casing 5, 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 the 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 operating the work machine 100.

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 it. This simplifies the design of the handle 106 and improves the convenience of starting the engine 6.

The contents described in each of the above embodiments can be understood, for example, as follows:

[1] A general-purpose engine apparatus (1) according to the present disclosure,
A general-purpose engine apparatus (1) to be 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 located 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) rotated by the driving force of the motor;
A starter switch (8) is attached to the handle and is capable of switching whether or not power is supplied from the battery to the motor.

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 that the battery and the engine are spaced apart from each other. This makes it possible to suppress the impact of heat and vibrations generated by the engine being driven on the battery. In addition, since the battery is located closer to the frame than the handle, the high-current wires connecting the battery and the motor can be made shorter, and increases in manufacturing costs can be suppressed, compared to when the battery is installed on the handle. Furthermore, the handle can be made lighter, compared to when the battery is installed on the handle, so good maneuverability of the work machine can be achieved.

[2] In some embodiments, in the configuration described in [1] above,
The battery 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.

The configuration described in [2] above makes it possible to suppress engine malfunctions caused by electrical noise flowing through high-current electric wires acting on engine components (e.g., ignition coils).

[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 at least a portion thereof in a bellows shape.

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

[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) for fixing the metal pipe to at least one of the battery box and the arm.

The configuration described in [4] above makes it possible to suppress damage to the battery box or metal pipe caused by the shaking of the metal pipe due to external forces, etc., while operating the work machine.

[5] In some embodiments, in the configuration according to 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 engine further includes an other end fixing portion (34) for fixing the metal pipe to an engine casing (7) that houses the engine.

The configuration described in [5] above makes it possible to suppress damage to the battery box or metal pipe caused by the shaking of the metal pipe due to external forces, etc., while operating the work machine.

[6] In some embodiments, in the configuration according to 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 and contraction portion.

The configuration described in [6] above prevents the battery and the high-current electric cable from interfering with each other, and enables the arm to extend and retract along the extension direction.

[7] In some embodiments, in the configuration according to 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.

The configuration described in [7] above makes it possible to prevent the battery from discharging through the charging line when the engine power is switched off.

[8] In some embodiments, in the configuration according to any one of [1] to [7] above,
If the start 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 start 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.

According to the configuration described in [8] above, the battery is provided near the center of the arm in the direction in which the arm extends, making it easier to balance the weight of the work machine compared to when the battery is provided on the handle.

REFERENCE SIGNS LIST 1 General-purpose engine device 2 Battery 3 Battery box 4 Motor 5 Motor casing 6 Engine 7 Engine casing 8 Starter switch 10 Metal tube 12 Crankshaft 17 Charge coil 19 Ignition device 21 Ignition coil 23 Spark plug 30 Charging line 30a Upstream charging line 30b Downstream charging line 32 One end fixing part 34 Other end fixing part 100 Work machine 102 Frame 104 Arm 106 Handle 108 Driving body 110 Expandable part 113 Starting point 115 End point 118 High current electric wire 119 Low current electric wire 120 Bellows part 124 Power switch D Extension direction of arm

Claims (8)

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 so as to be located 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 including a crankshaft mounted on the frame and rotated by a driving force of the motor;
a starter switch attached to the handle and capable of switching whether or not power is supplied from the battery to the motor.
General purpose engine equipment. The battery may be electrically connected to the motor via a metal tube that covers a high-current electric wire.
2. A general-purpose engine system according to claim 1. The arm is configured to be swingable relative to the frame,
The metal tube includes a bellows portion having a bellows shape at least in a portion thereof.
3. A general-purpose engine system according to claim 2. the metal tube extends from a battery box that houses the battery to a motor casing that houses the motor;
The metal tube further includes a one-end fixing portion that fixes the metal tube to at least one of the battery box and the arm.
4. A general-purpose engine apparatus according to claim 2 or 3. 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.
4. A general-purpose engine apparatus according to claim 2 or 3. The arm includes an extension portion 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 portion.
4. A general-purpose engine apparatus according to claim 1. 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 capable of switching the power supply of the engine ON or OFF;
4. A general-purpose engine apparatus according to claim 1. When a start point where the arm connects to the frame is defined as a position of 0% of the length of the arm, and the length increases from the start point to an end point where the arm connects to the handle, and the end point is defined as a position of 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.
4. A general-purpose engine apparatus according to claim 1.

Images