JP5056740B2 - Handheld engine working machine - Google Patents

Description

  The present invention relates to a hand-held engine working machine having a handle that rotates with respect to a main body.

  Conventionally, an engine work machine that cuts off branches and leaves such as hedges has a configuration that can change the angle by rotating and fixing the handle of the work machine according to the cutting position and the posture of the worker. Yes. Moreover, when rotating a handle | steering-wheel, the structure where a cutting blade does not act | operate is employ | adopted in order to prevent cutting away an unintended location.

  For example, Patent Document 1 uses a lever complex connected to a protrusion that locks the rotation of the handle by fitting into a groove provided in the airframe, and a lever member that abuts the throttle fixing lever. In the rotatable state, a technique for preventing the throttle lever from being pulled by bringing a lever member into contact with the throttle fixing lever is disclosed.

JP 2005-160303 A

In the technique disclosed in Patent Document 1, when the throttle lever is forcibly pulled in a pivotable state, a large bending moment is applied to the throttle fixing lever. There was a risk of occurrence.
In addition, the protrusion that locks the rotation of the handle is always urged in the locking direction by the spring. Could not change to angle.

  The present invention has been made in view of such a problem, and in an engine work machine, when the rotation of the handle is allowed, the operation of the cutting blade can be prevented and the operation can be stably performed even after aged use. The purpose is to do so.

A hand-held engine working machine according to the present invention is:
The body,
An engine having an ignition device and supported by the body;
A handle rotatably connected to the body;
A restricting member for restricting rotation of the handle and fixing the handle to the main body;
A gas supply means provided on the handle, provided with an operation section, for supplying a mixed gas to the engine according to an operation amount of the operation section;
When the restricting member restricts the rotation of the handle, the engine is allowed to be driven, and when the restricting member allows the handle to be turned and the operation portion is operated, the engine Drive control means for stopping the drive of
It is characterized by providing.

  For example, the drive control means can supply electric power for ignition to the ignition device of the engine when the restricting member restricts rotation of the handle, and the restricting member rotates the handle. When the operation unit is operated, the power supply to the ignition device is stopped and the engine is stopped.

Further, the restricting member restricts the rotation of the handle when disposed at the first position, permits the rotation of the handle when disposed at the second position, 1 electrode terminal,
The operation unit has a second electrode terminal that comes into contact with the first electrode terminal when the operation member is operated in a state where the regulating member is disposed at the second position.
The drive control means may stop the supply of electric power to the ignition device of the engine when the first electrode terminal and the second electrode terminal come into contact with each other.

Further, the restricting member restricts the rotation of the handle when disposed at the first position, and allows the rotation of the handle when disposed at the second position;
It is preferable to have a restriction release preventing part that prevents the restricting member from changing from the first position to the second position when the operation part is operated.

  For example, the restriction release preventing portion is provided on the restriction member, and engages with the operation portion by operating the restriction member toward the second position in a state where the operation portion is operated. It is a joint.

  Furthermore, it is preferable to further have a rotation position defining means for defining a rotation position of the main body and the handle.

For example, the rotation position defining means is
The regulating member provided on the handle;
A plurality of recesses provided in the main body, and
The rotation position of the main body and the handle may be defined by fitting the restricting member into the recess.

The handle further includes a plurality of locking holes at an angular interval that is the same as an angular interval connecting the plurality of recesses provided in the main body and the rotation shaft of the handle,
The main body further includes a locking protrusion locked in the locking hole,
The plurality of locking holes and the locking projection may be locked when the plurality of recesses and the regulating member face each other.

  Further, it is desirable to further include a centrifugal clutch between the engine and a blade portion driven by the engine, which cuts off power to the blade portion when the engine becomes a predetermined rotational speed or less.

  As described above, the hand-held engine working machine according to the present invention can prevent the operation of the cutting blade when the steering wheel is allowed to rotate, and can operate stably even after aged use.

  Hereinafter, embodiments of the present invention will be specifically described with reference to the accompanying drawings. As shown in FIG. 1, the engine work machine 1 according to the present embodiment mainly includes a blade 10, a work machine body 20, and a rear handle 30.

  The blade (cutting blade) 10 includes a lower blade 12 and an upper blade 14. An engine 24 described later is positioned between the lower blade 12 and the upper blade 14 by reciprocating the upper blade 14 and the lower blade 12 via a centrifugal clutch (not shown) and an eccentric cam (not shown). Mow the cut material.

  The work machine main body 20 mainly includes a support base 22 and an engine 24. An engine 24 is placed on the support base 22. A starter handle 242 is provided on the upper right side of the engine 24 shown in FIG. A fuel tank 240 is provided on the right side shown in FIG. Further, the support base 22 includes a centrifugal clutch (not shown) inside. The centrifugal clutch transmits power to the lower blade 12 when the rotational speed of the engine 24 increases, and cuts off transmission of power to the lower blade 12 when the rotational speed of the engine 24 decreases. Further, the lower blade 12 of the blade 10 is reciprocated by the power generated by the engine 24 via the centrifugal clutch, and cuts the material to be cut. A hand guard 26 and a front handle 28 are provided on the left side of the support base 22 shown in FIG.

  The hand guard 26 is for suppressing the material cut by the blade 10 from being scattered in the direction of the operator. The shape of the hand guard 26 is substantially trapezoidal, and is attached to the support base 22 so as to protrude to the upper left as shown in FIG.

  The front handle 28 is for holding the engine work machine 1 together with a rear handle 30 described later. The shape of the front handle 28 is U-shaped, and is provided above the hand guard 26 (shown in FIG. 1B).

  The rear handle 30 mainly includes a handle main body 32, a throttle lever (operation unit) 34, a safety lever 36, a stop switch 38, and a rotation lock member (regulating member) 40. A detailed exploded view of the rear handle 30 is shown in FIG.

  As shown in FIG. 2, the handle body 32 is for holding the engine work machine 1 together with the front handle 28. The shape of the handle body 32 is substantially D-shaped. Further, the handle main body 32 is formed with a substantially circular tubular main body connection portion 320 connected to the support base 22 so as to protrude.

  The throttle lever 34 is for adjusting the supply amount of the mixed gas to the engine 24. The shape of the throttle lever 34 is substantially L-shaped, and a rotation shaft 50 is formed at the center. When one end 340 of the throttle lever 34 protruding from the handle body 32 is pressed upward, the throttle lever 34 rotates about the rotation shaft 50 counterclockwise as shown in FIG. The mixed gas is supplied into the engine 24 according to the rotation amount. Further, when the throttle lever 34 is not pulled and the engine 24 becomes a predetermined number of revolutions or less, the centrifugal clutch (not shown) cuts off the power transmission from the engine 24 to the lower blade 12 and enters an idling state.

  In addition, an electrode terminal 344 is attached to the other end 342 of the throttle lever 34, and the supply of electric power to an ignition device 246 described later is stopped by contacting an electrode terminal 482 described later. The function of the electrode terminal 344 will be described later with reference to FIG.

  The safety lever 36 has a function of regulating an unintended operation of the throttle lever 34. As shown in FIG. 3, the safety lever 36 has a rotating shaft 52 at the center and a protruding portion 360 that protrudes below the rotating shaft 52. In the state shown in FIG. 3A in which the safety lever 36 protrudes from the handle body 32, the pulling operation of the throttle lever 34 is restricted by the protrusion 360 of the safety lever 36 coming into contact with the throttle lever 34. Further, in the state shown in FIG. 3B in which the safety lever 36 is rotated clockwise around the rotation shaft 52, the protruding portion 360 of the safety lever 36 does not contact the throttle lever 34. The pulling operation of the lever 34 is allowed.

  The stop switch 38 is provided in the upper part of the handle main body 32 shown in FIG. 3, and stops the supply of electric power to an ignition device 246 described later. The detailed function of the stop switch 38 will be described later with reference to FIG.

  The rotation lock member 40 is provided in the rear handle 30 in the vicinity of the support base 22. As shown in an enlarged view in FIG. 4, the rotation lock member 40 includes a rectangular parallelepiped slide body 41, a plate-like terminal support portion 48 erected upward from the slide body 41 in the drawing, And a fitting projection (turning position defining means) 486 that fits into a fitting recess (turning position defining means) 222 shown in FIG.

  The slide body 41 includes sliding portions 46 slidable on the handle main body 32 on both side surfaces substantially perpendicular to the side surface of the handle main body 32, and enables the rotation lock member 40 to reciprocate within the rear handle 30.

  The terminal support 48 is formed with a support hole 480 for supporting the electrode terminal 482 shown in FIGS. The electrode terminal 482 stops the supply of electric power to the ignition device 246 described later by contacting the electrode terminal 344 provided on the throttle lever 34. The function of the electrode terminal 482 will be described later with reference to FIG. Further, as shown in FIG. 4, a convex portion 484 (regulation release preventing portion, engaging portion) is provided on the upper portion of the terminal support portion 48. Detailed operation of the convex portion 484 will be described later.

  The fitting protrusion 486 is formed on the substantially same plane as the terminal support portion 48 so as to protrude toward the handle connection portion 220 provided on the work machine main body 20 shown in FIG. In the work machine body 20, the handle connection portion 220 connected to the rear handle 30 is provided with a fitting recess 222 (see FIG. 6) into which the fitting protrusion 486 is fitted. The fitting protrusion 486 is fitted into a fitting recess 222 provided in the handle connection portion 220 of the support base 22, and fixes the rear handle 30 to the support base 22.

  Next, the operation of the rotation lock member 40 that locks the rotation of the rear handle 30 will be described with reference to FIGS. Here, the side views of FIGS. 5 (a) and 5 (c) are FIGS. 5 (b) and 5 (d), respectively, and the AA cross-sectional view of FIG. FIG. 6B is a cross-sectional view taken along the line AA in FIG.

  In the handle connection part 220 according to the present embodiment, five fitting recesses 222 into which the fitting protrusions 486 are fitted are formed at every 35 ° around the rotation axis. When the operator rotates the rear handle 30 and the fitting protrusion 486 is positioned at an angle facing the arbitrary fitting recess 222 as shown in FIG. 6B, the slide body 41 shown in FIG. The side surface 42 on the throttle lever 34 side (hereinafter referred to as a fixed side surface) is pressed (the side surface 44 on the terminal support portion 48 side of the slide body 41 (hereinafter referred to as a fixed release side surface) protrudes from the side surface of the handle body 32). . Then, the fitting protrusion 486 is fitted into the fitting recess 222, and the rotation of the rear handle 30 is locked.

  On the other hand, the fixing release side surface 44 is pushed (the fixing side surface 42 protrudes from the side surface of the handle body 32). Then, the fitting protrusion 486 is removed from the fitting recess 222, and the rear handle 30 can be rotated.

  Next, a structure in which an operator can sense that the fitting protrusion 486 is positioned at an angle facing the fitting recess 222 when the rear handle 30 is rotated will be described with reference to FIGS. Here, the side views of FIGS. 7A and 7C are FIGS. 7B and 7D, respectively, and the BB cross-sectional view of FIG. FIG. 8B is a sectional view taken along the line B-B in FIG. As shown in FIG. 8, a locking projection 224 is formed at one position of the handle connection portion 220 provided on the support base 22. Furthermore, in the main body connecting portion 320 of the handle main body 32, five locking holes 324 that are locked to the locking protrusions 224 are formed at every 35 ° about the rotation axis.

  When the locking projection 224 and the locking hole 324 are locked, the locking hole 324 has the same angle as the fitting recess 222 so that the fitting projection 486 and the fitting recess 222 shown in FIG. It is formed at intervals. By doing so, the operator can sense that the engagement protrusion 486 is positioned at an angle facing the engagement recess 222 by the sound and resistance that the engagement protrusion 224 engages with the engagement hole 324. . Therefore, when the operator senses an angle at which the rear handle 30 can be fixed, the worker can fit the fitting protrusion 486 and the fitting recess 222 by pressing the fixed side surface of the rotation lock member 40. The rear handle 30 can be easily fixed. Here, the numbers and angles of the locking holes 324 and the fitting recesses 222 may be arbitrarily changed according to the target specification.

  Next, power supply to the spark plug 248 in the engine 24 will be described with reference to FIG. Electric power is supplied to the spark plug 248 by an engine generator 244 that generates electric power by the power of the engine 24 and an ignition device 246 that is connected to a terminal of the engine generator 244 and applies an ignition voltage to the spark plug 248. Next, the stop switch 38 is configured by an open / close switch, and is connected between two output ends of the engine generator 244. When the stop switch 38 is closed, the two output terminals of the engine generator 244 are short-circuited. For this reason, the supply of electric power for ignition from the engine generator 244 to the ignition device 246 is stopped, and the supply of electric power from the ignition device 246 to the ignition plug 248 is stopped.

  The electrode terminal 344 provided on the throttle lever 34 is connected to one of the output ends of the engine generator 244, and the electrode terminal 482 provided on the rotation lock member 40 is connected to the other output end of the engine generator 244. Has been. The electrode terminal 344 disposed at the other end 342 of the throttle lever 34 contacts the electrode terminal 482 as the throttle lever 34 is operated, and short-circuits the two output ends of the engine generator 244. For this reason, the supply of electric power for ignition from the engine generator 244 to the ignition device 246 is stopped, and the supply of electric power from the ignition device 246 to the ignition plug 248 is stopped.

  Next, the engine stop operation when the throttle lever 34 is pulled while the rear handle 30 is rotatable will be described with reference to FIGS. FIG. 10A is a view showing a state in which the rotation lock member 40 is disposed at a rotatable position and the throttle lever 34 is pulled, and FIG. 10B is a cross-sectional view taken along the line CC in FIG. FIG. Further, FIG. 11 (a) is a DD cross-sectional arrow view of FIG. 10 (b), and FIG. 11 (b) is an EE cross-sectional arrow view of FIG. 10 (b).

  When the fixing release side surface 44 of the rotation lock member 40 is pushed, the fitting protrusion 486 is removed from the fitting recess 222, and the rear handle 30 is turned. At the same time, as shown in FIGS. 10B and 11, the terminal support portion 48 of the rotation lock member 40 is positioned in the vicinity of the throttle lever 34. In this state, when the operator pulls one end 340 of the throttle lever 34 shown in FIG. 10A into the handle main body 32, the throttle lever 34 rotates about the rotation shaft 50. At this time, the electrode terminal 344 provided at the other end 342 of the throttle lever 34 is connected to the electrode terminal 482 provided at the terminal support portion 48 of the rotation lock member 40 as shown in FIGS. Contact.

  In this way, when the electrode terminal 344 and the electrode terminal 482 come into contact with each other, as shown in FIG. 9, the two output ends of the engine generator 244 are short-circuited. For this reason, the supply of electric power from the engine generator 244 to the ignition device 246 is stopped, and the supply of electric power from the ignition device 246 to the ignition plug 248 is stopped. As a result, the operation of the piston in the engine 24 stops.

  Even when the terminal support portion 48 of the rotation lock member 40 is positioned in the vicinity of the throttle lever 34, the electrode terminal 344 and the electrode terminal 482 are arranged so as not to contact each other unless the throttle lever 34 is pulled. ing. The rear handle 30 is rotated in a so-called idling state in which the engine power is not transmitted to the blade 10 without stopping the engine unless the throttle lever 34 is pulled by providing the centrifugal clutch. Can be made.

  Next, the rotation lock member 40 is disposed at a position that restricts the rotation of the rear handle 30 and the throttle lever 34 is pulled (the operation state of the engine work machine 1). A structure for preventing the handle 30 from changing to a state allowing the rotation will be described with reference to FIGS. 12 and 13. FIG. 12A is a diagram illustrating a state in which the rotation release member 44 of the rotation lock member 40 is pushed after the rotation lock member 40 is disposed at the rotation lock position and the throttle lever 34 is pulled. 12B is a cross-sectional view taken along the line CC of FIG. 12A, and FIG. 13A is a cross-sectional view taken along the line DD of FIG. (B) is the EE cross-section arrow view of FIG.12 (b).

  In this state, when the operator presses the fixing release side surface 44 of the rotation lock member 40, the convex portion 484 provided on the terminal support portion 48 is moved to the other end 342 of the throttle lever 34 as shown in FIG. Abut. For this reason, the fitting protrusion 486 shown in FIG. 6 provided on the turning lock member 40 is not removed from the fitting recess 222, and the turning lock of the rear handle 30 is not released. Thus, the convex portion 484 acts as a restriction release preventing portion, and the rotation of the rear handle 30 is locked, and the change from the state in which the throttle lever 34 is pulled to the state in which it can be rotated can be prevented.

  Next, from the state where the rotation lock member 40 is disposed at a position where the rotation of the rear handle 30 is restricted and the throttle lever 34 is pulled (the operation state of the engine work machine 1), the rotation lock member 40 is moved. A modified example of the rotation lock member 40 having a function of preventing the rear handle 30 from changing to a state allowing the rotation of the rear handle 30 will be described with reference to FIG.

  The throttle lever 34 according to the modified example has an engaging protrusion 346 (regulation release preventing portion, engaging portion) protruding toward the rotation lock member 40 at the other end 342. Further, the slide body 41 of the rotation lock member 40 according to the modified example is formed with a receiving hole 412 at a position facing the engagement protrusion 346 in the rotation release state (the state located at the left end in FIG. 14). .

  Next, operations of the throttle lever 34 and the rotation lock member 40 according to the modification will be described. First, in a state where the rotation lock member 40 is disposed at the rotatable position (left side position in FIG. 14) as shown in FIG. 14 (a), the throttle lever 34 is moved as shown in FIG. 14 (b). When pulled, the other end 342 is positioned below. Then, electrode terminal 344 and electrode terminal 482 come into contact, and the two output ends of engine generator 244 are short-circuited. For this reason, the supply of electric power from the engine generator 244 to the ignition device 246 is stopped, and the supply of electric power from the ignition device 246 to the ignition plug 248 is stopped. At this time, since the receiving hole 412 is formed in the slide body 41, the engagement protrusion 346 and the surface of the slide body 41 do not interfere with each other.

  Next, FIG. 14C shows a state in which the rotation lock member 40 is disposed at the rotation lock position (right position in FIG. 14), the throttle lever 34 is pulled, and the other end 342 is positioned below. . In this state, even if the fixing release side surface 44 is pressed so as to move the rotation lock member 40 to the rotatable position (the left side position in FIG. 14), the engagement protrusion 346 interferes with the side surface of the slide body 41. The movement of the rotation lock member 40 to the rotatable position is hindered. In this way, the engagement protrusion 346 functions as a restriction release preventing portion. In this way, the rotation of the rear handle 30 is locked, and the change from the state in which the throttle lever 34 is pulled to the state in which the rotation is possible can be prevented.

  The engine working machine 1 according to the above embodiment stops the driving of the engine 24 when the throttle lever 34 is pulled in a state where the rotation of the rear handle 30 is permitted, so that the rotation of the rear handle 30 is stopped. When moving, it is possible to prevent unintended parts from being cut off.

  Specifically, the engine 24 can be stopped by stopping the supply of electric power to the ignition device 246 inside the engine 24.

  More specifically, when the throttle lever 34 is pulled in a state in which the rotation lock member 40 allows the rear handle 30 to rotate, the electrode terminal 482 and the throttle lever 34 provided on the rotation lock member 40 are pulled. The electrode terminal 344 provided in the contact. By this contact, the output end of the engine generator 244 is short-circuited, and the supply of electric power to the spark plug 248 is stopped. By operating in this way, it is possible to prevent the blade 10 from operating when the rear handle 30 is rotated.

  Further, since the rotation lock member 40 has the convex portion 484 and the engagement protrusion 346, the rotation lock member 40 is disposed at a position where the rotation of the rear handle 30 is restricted, and the throttle lever 34 is pulled. In this state, the rotation lock member 40 can be prevented from moving to a position that allows the rear handle 30 to rotate.

  Further, by providing a plurality of fitting recesses 222 in the handle connection portion 220 of the work machine body 20 so as to face the fitting protrusions 486 of the rotation lock member 40, the arrangement locations of the fitting recesses 222 are provided. The rear handle 30 can be fixed to the work machine body 20 at an angle corresponding to.

  Further, a locking projection 224 is provided at one position of the handle connecting portion 220 provided on the support base 22, and a plurality of locking holes 324 are provided in the main body connecting portion 320 of the handle main body 32. When the rear handle 30 is rotated, the engagement position between the engagement protrusion 224 and the engagement hole 324 and the opposite position between the engagement protrusion 486 and the engagement recess 222 are matched. The person can sense the angle at which the rear handle 30 can be fixed. After sensing the angle at which the rear handle 30 can be fixed, the fitting protrusion 486 and the fitting recess 222 can be easily fitted by pushing the fixed side surface of the rotation lock member 40, and the rear handle 30 Can be fixed.

  Furthermore, by providing a centrifugal clutch (not shown), the rear handle 30 can be rotated while the engine 24 is idling without operating the blade 10. In this way, restarting can be quickly performed after the rear handle 30 is rotated to a desired angle.

  The present invention is not limited to the brush cutter described in the embodiment, and can be applied to a cutting machine, a chain saw, or the like.

  In the present embodiment, the contact between the electrode terminal 482 provided on the rotation lock member 40 and the electrode terminal 344 provided on the throttle lever 34 causes the output end of the engine generator 244 to be short-circuited and supplied to the spark plug 248. It has the structure which has the function which interrupts | blocks the electric power to perform. Other configurations may include, for example, a configuration in which the power supplied to the spark plug 248 is cut off by microcomputer control, or a configuration in which the supply amount of the air-fuel mixture is limited so that the engine 24 is in an idling state or stopped.

(A) of the engine working machine which concerns on this embodiment is a top view, (b) is a side view. It is an exploded view which shows the inside of the rear handle which concerns on this embodiment. (A) of the throttle lever of the engine working machine which concerns on this embodiment is a partial cross section side view which shows a locked state, (b) is a partial cross section side view which shows a lock release state. (A) is a perspective view which shows the one side of the rotation lock member which concerns on this embodiment, (b) is a perspective view which shows the reverse side of the rotation lock member shown by (a). (A), (c) is a side view which respectively shows the handle | steering-wheel rotation state of the engine working machine which concerns on this embodiment, (b), (d) is a front view with respect to (a), (c), respectively. It is. (A) is an AA cross-sectional arrow view of Fig.5 (a), (b) is an AA cross-sectional arrow view of FIG.5 (c). (A), (c) is a side view which respectively shows the handle | steering-wheel rotation state of the engine working machine which concerns on this embodiment, (b), (d) is a front view with respect to (a), (c), respectively. It is. (A) is a BB cross-sectional arrow view of Fig.7 (a), (b) is a BB cross-sectional arrow view of FIG.7 (c). It is a circuit diagram concerning the electrode terminal provided in the throttle lever and rotation lock member concerning this embodiment. (A) of the engine working machine which concerns on this embodiment is a fragmentary sectional side view, (b) is CC sectional view taken on the line of (a). (A) is DD sectional view taken on the line of FIG.10 (b), (b) is EE sectional arrow view of FIG.10 (b). (A) of the engine working machine which concerns on this embodiment is a fragmentary sectional side view, (b) is CC sectional view taken on the line of (a). (A) is DD sectional view taken on the line of FIG.12 (b), (b) is EE sectional arrow view of FIG.12 (b). It is a schematic diagram which shows the modification of the throttle lever and rotation lock member which concern on this embodiment, (a) is a figure which shows a rotatable state, (b) shows the state which pulled the throttle lever in (a). FIG. 5C is a diagram showing a state where the throttle lever is pulled in the rotation lock state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1: Engine working machine 10: Blade 20: Work machine main body 22: Support stand 220: Handle connection part 222: Fitting recessed part (turning position regulation means)
224: Locking projection 24: Engine 30: Rear handle 32: Handle main body 320: Main body connection portion 324: Locking hole 34: Throttle lever (operation portion)
344: Electrode terminal 346: Engagement protrusion (regulation release prevention part, engagement part)
36: Safety lever 40: Rotation lock member (regulation member)
412: Receiving hole 482: Electrode terminal 484: Convex part (regulation release preventing part, engaging part)
486: Fitting protrusion (turning position defining means)

Claims (9)

The body,
An engine having an ignition device and supported by the body;
A handle rotatably connected to the body;
A restricting member for restricting rotation of the handle and fixing the handle to the main body;
A gas supply means provided on the handle, provided with an operation section, for supplying a mixed gas to the engine according to an operation amount of the operation section;
When the restricting member restricts the rotation of the handle, the engine is allowed to be driven, and when the restricting member allows the handle to be turned and the operation portion is operated, the engine Drive control means for stopping the drive of
A hand-held engine working machine characterized by comprising: The drive control means can supply electric power for ignition to the ignition device of the engine when the restricting member restricts the turning of the handle, and the restricting member prevents the turning of the handle. When the operation unit is allowed and operated, the supply of power to the ignition device is stopped to stop the engine.
The hand-held engine working machine according to claim 1. The restricting member restricts the rotation of the handle when disposed at the first position, permits the rotation of the handle when disposed at the second position, and With electrode terminals,
The operation unit has a second electrode terminal that comes into contact with the first electrode terminal when the operation member is operated in a state where the regulating member is disposed at the second position.
The drive control means stops supplying electric power to the ignition device of the engine when the first electrode terminal and the second electrode terminal come into contact with each other.
The hand-held engine working machine according to claim 1 or 2. The restricting member restricts the rotation of the handle when disposed at the first position, and permits the rotation of the handle when disposed at the second position;
In a state where the operation portion is operated, the restriction member has a restriction release preventing portion that prevents the restriction member from changing from the first position to the second position.
The hand-held engine working machine according to any one of claims 1 to 3. The restriction release preventing part is provided on the restriction member, and engages with the operation part by operating the restriction member toward the second position in a state where the operation part is operated. Is,
The hand-held engine working machine according to claim 4. A rotation position defining means for defining a rotation position of the main body and the handle;
The hand-held engine working machine according to any one of claims 1 to 5, wherein: The rotation position defining means is
The regulating member provided on the handle;
A plurality of recesses provided in the main body, and
The regulating member is fitted in the recess to define the rotational position of the main body and the handle.
The hand-held engine working machine according to claim 6. The handle further includes a plurality of locking holes at an angular interval that is the same as an angular interval connecting the plurality of recesses provided in the main body and the rotation shaft of the handle,
The main body further includes a locking protrusion locked in the locking hole,
The plurality of locking holes and the locking projection are locked when the concave portion and the regulating member are opposed to each other.
The hand-held engine working machine according to claim 7. A centrifugal clutch is further provided between the engine and the blade portion driven by the engine to cut off the power to the blade portion when the engine becomes a predetermined number of revolutions or less.
The hand-held engine working machine according to any one of claims 1 to 8.

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