JP5808259B2 - Walking mower - Google Patents

Description

  The present invention relates to a walk-type mower capable of cutting a weed on a slope, a pasture mowing, etc. on a farm road or a fence.

  In the prior art of the walking type mower, as disclosed in Patent Document 1, the front and rear traveling wheels and the maneuvering are provided in a mowing unit that pivotally accommodates a cutting blade that is rotationally driven around a longitudinal axis in a housing. Equipped with a handle, a driving part is mounted on the upper part of the mowing part, and a cutting blade driving shaft driven by power from the driving part is arranged in a vertical posture in a driving case arranged in the mowing part. The cutting blade shaft is fitted and coupled so as to be able to transmit rotation to the cutting blade drive shaft and to be movable in the axial direction.

  An engine is used for the driving part, a centrifugal clutch is provided between the engine and the cutting blade drive shaft, a brake is provided on the cutting blade drive shaft, and an accelerator lever provided on the steering handle and a speed control mechanism provided in the engine And the brake are linked with an operation wire. After the engine is started, the accelerator lever is operated to increase the rotational speed of the engine, the brake is released, and the cutting blade is rotated to run.

JP 2007-053993 A

Although the prior art discloses a technique that uses an electric motor instead of an engine for the driving part, a structure above a cutting blade such as a centrifugal clutch or a brake can be obtained only by applying an electric motor instead of an engine. There are many, the structure remains complex and the center of gravity of the aircraft is high.
An object of the present invention is to provide a walk-type mower capable of solving such problems of the prior art.

  The present invention applies an electric motor to the cutting blade drive, enables transmission of power from the output shaft of the electric motor to the cutting blade shaft in a short circuit, and disposes a battery on at least one of the front and rear sides of the electric motor. It is an object of the present invention to provide a walking type mower capable of simplifying the transmission structure and lowering the center of gravity of the body.

Specific means for solving the problems in the present invention are as follows.
First, an electric motor M in which an output shaft M1 is vertically oriented on a traveling machine body F in which front and rear wheels 2 are paired on the left and right, and a cutting blade provided with a cutting blade body 3 using the power of the output shaft M1 of the electric motor M. A drive mechanism K for transmitting power to the shaft 4 and the front and rear shafts 5 of the front and rear wheels 2 is provided, and the output shaft M1 of the electric motor M is disposed concentrically above the cutting blade shaft 4 and rotational power is provided. connected via a cutting blade clutch C for disengaging, and place the battery B before and after at least one in and the right and left wheels 2 wheels距内electric motor M on the vehicle body F, traveling cutter blade shaft 4 Arranged at approximately the center of the front and rear, left and right of the body F, the battery B is disposed at one of the front and rear of the electric motor M, the motor controller D for operating the electric motor M is disposed at the other front and rear of the electric motor M, The tip of the steering handle H is attached to one side, and the output shaft of the electric motor M 1, traveling power transmission means K <b> 1 of the drive mechanism K is disposed on the left and right sides of the traveling machine body F. The traveling machine body F connects the left and right side walls 20 with a connecting plate 21, and a pipe is connected to the upper surface of the connecting plate 21. A frame 25 is fixed, and the pipe frame 25 has a substantially V-shaped bent portion, one side portion extending from one side of the bent portion, and the other side portion extending from the other side of the bent portion. The bent portion protrudes from one of the left and right side walls 20, and a support base 26 for attaching the steering handle H is provided on the protruding portion, and the one side portion is electrically driven. It is arranged between the motor M and the battery B, and the other side part is arranged between the electric motor M and the motor controller D.

Secondly, the steering handle H is disposed on one side of the left and right sides of the traveling machine body F around the longitudinal axis 45 rotatably supported by the support base 26 from one of the front and rear sides on the left and right side of the battery B. The motor controller D is capable of turning in the other range of front and rear, which is the left and right side of the motor controller D.

Thirdly, the drive transmission shaft 13 is directly connected to the output shaft M1 of the electric motor M, the drive transmission shaft 13 and the cutting blade shaft 4 are connected by the cutting blade clutch C, and the drive transmission shaft 13 and the front and rear shaft 5 are connected to each other. The driving power transmission means K1 with a deceleration function of the drive mechanism K is provided between the two.
Fourthly, the electric motor M is an inverter motor controlled by a motor controller D, and the motor controller D has forward / reverse rotation control means D1 for switching forward / reverse rotation of the electric motor M, and the rotational speed is stepped. There is provided at least one of a high / low switching control means D2 for stepless switching, a rotational speed control means D3 for maintaining a constant rotational speed after slowly increasing the speed from the start, and a brake control means D4 for quickly reducing the rotational speed when stopping. It is characterized by that.

According to the present invention, power can be transmitted from the output shaft M1 of the electric motor M to the cutting blade shaft 4 in a short-circuit manner, and the battery B is disposed on the front and rear sides of the electric motor M, thereby simplifying the power transmission structure and the machine body. The center of gravity can be lowered.
That is, in the invention according to claim 1, the output shaft M <b> 1 of the electric motor M is concentrically arranged on the cutting blade shaft 4 and connected via the cutting blade clutch C for connecting and disconnecting the rotational power. Therefore, the structure becomes simple, and the battery B is disposed at least one of the front and rear of the electric motor M on the traveling machine body F and within the width of the left and right wheels 2, so that the center of gravity of the machine body can be lowered.

Further, the invention according to claim 1 is an arrangement of the battery B on one side of the front and rear of the electric motor M arranged at the substantially center of the front and rear, left and right of the traveling machine body F, and the motor controller D on the other side of the front and rear of the electric motor M; the arrangement of the steering wheel H of one lateral side of the traveling machine body F and the traveling power transmission means K1 of the left and right the other side of the driving mechanism K Thus, it satisfactorily member arrangement balance of the front and rear and left and right vehicle body F.
In the invention according to claim 3, by applying the electric motor M to the cutting blade drive and directly connecting the drive transmission shaft 13 to the output shaft M1 of the electric motor M, the centrifugal clutch and the brake can be omitted, and the electric motor M The deceleration traveling power to the front and rear shaft 5 can be taken out while the power transmission from the output shaft M1 to the cutting blade shaft 4 is short-circuited.

  In the invention according to claim 4, by making the electric motor M an inverter motor, the motor controller D switches the forward / reverse rotation, the rotational speed is switched between high and low, the constant rotational speed is maintained after acceleration from the start, or Controls such as quickly reducing the number of revolutions when stopping are simple.

1 is an overall plan view showing an embodiment of the present invention. It is the same whole side view. It is a top view of the main part. It is a section front view of a drive mechanism. It is a cross-sectional side view of a drive mechanism. It is a cross-sectional top view of a drive mechanism. It is a side view which shows the front-and-rear wheel drive of a traveling power transmission means. It is a side view of the principal part. FIG. 6 is an enlarged side view of a steering handle tip mounting portion. It is an enlarged plan view of a steering handle tip attachment portion. It is an enlarged plan view of a steering handle hand portion. It is an enlarged side view of a steering handle hand part. It is an enlarged side view of a check means. It is an enlarged front view of a check means. It is the schematic of the whole mowing machine.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 6, a walking type mower 1 capable of cutting a sloped grass can be broadly divided into a traveling machine body F in which front and rear wheels 2 are mounted, an electric motor M in which an output shaft M1 is vertically oriented, and this electric motor. A drive mechanism K for transmitting the power of the motor M to the cutting blade shaft 4 and the front and rear shaft 5 to which the cutting blade body 3 is attached, a steering handle H having a tip attached to the traveling machine body F, and a battery B for the electric motor M And a motor controller D.

The state in which the turning posture of the control handle H is set in the direction indicated by the two-dot chain line in FIG. Direction), the side where the steering handle H is unevenly distributed is called the left side of the traveling machine body F, and the opposite side is called the right side.
In the traveling machine body F, the left and right side walls 20 are connected by a connecting plate 21 and front and rear handles 22, an opening 24 for inserting and arranging the driving case 23 is formed in the connecting plate 21, and the driving case 23 is straddled from the side. A substantially V-shaped pipe frame 25 is formed on the upper surface of the connecting plate 21. You may form the connection board 21 by multiple sheets in the front-back direction.

The pipe frame 25 protrudes from one (left side) side wall 20, and a support base 26 to which the steering handle H is attached is provided on the protruding portion.
3-7, the drive case 23 is inserted into the opening 24 from above and attached to the left and right side walls 20 and the connecting plate 21, the electric motor M is attached to the upper part thereof, and the output shaft M1 is inserted therein. . For example, an inverter-controlled direct current brushless motor is employed as the electric motor M, and change control of the rotational speed and direction of the cutting blade body 3 is performed via a motor controller D.

In the drive case 23, the drive transmission shaft 13 and the cutting blade shaft 4 are rotatably supported immediately below the output shaft M1. The drive transmission shaft 13 is directly connected to the output shaft M <b> 1 via a cylinder coupling 27, and is connected to the cutting blade shaft 4 via a cutting blade clutch C so as to be connected and disconnected.
The cutting blade clutch C has an upper clutch body C1 fixed to the lower portion of the drive transmission shaft 13 and a lower clutch body C2 fitted to the upper portion of the cutting blade shaft 4 so as to be axially slidable. The lower clutch body C2 is moved upward by the blade shifter 28 and engaged with the upper clutch body C1, so that power can be transmitted. The cutting blade shifter 28 is attached to a shifter shaft 28A, and the shifter shaft 28A is rotatable from the outside of the drive case 23 by a cutting blade lever 28B.

A cutting blade body 3 is detachably attached to a lower portion of the cutting blade shaft 4. This cutting blade body 3 has a disc 3b fixed to a central boss portion 3a fitted to the cutting blade shaft 4, and a plurality of blades 3c are erected on the upper surface of the disc 3b at equal intervals in the circumferential direction. A plurality of cutting blades 31 are provided on the outer periphery of the disc 3b at equal intervals in the circumferential direction.
The upper part of the cutting blade body 3 is covered with a cutting cover 29 provided at the lower part of the drive case 23, and the upper diameter outer side of the blade 3 c is intruded and arranged inside the cutting cover 29.

In the embodiment, the cutting blade 31 is provided with a pair of upper and lower portions at two positions displaced 180 degrees on the outer periphery of the disk 3b, and penetrates the cutting blade pin 30 vertically on the outer periphery of the disk 3b. The cutting blade pin 30 is rotatably provided.
Each cutting blade pin 30 is composed of a pair of upper and lower headed pins. The headed pins are removed in a semicircular shape at the tip side, the semicircular tip is bitten with the pins facing up and down, and a retaining pin 32 is retained. The upper and lower pins are connected to each other.

The drive transmission shaft 13, the cylinder coupling 27, the cutting blade shaft 4 and the cutting blade clutch C constitute cutting blade power transmission means K2 of a driving mechanism K that directly transmits the driving force of the output shaft M1 to the cutting blade body 3. The output shaft M1 of the electric motor M to the cutting blade shaft 4 has a short-circuit and simple structure that transmits power concentrically and linearly.
A worm gear 13A is provided in the middle of the drive transmission shaft 13, and a worm wheel 33A loosely fitted to the transmission shaft 33 is engaged with the worm gear 13A, and a first gear 33B is also loosely fitted to the transmission shaft 33. The bevel pinion 34B at the tip of the bevel pinion shaft 34, which is engaged with the second gear 34A provided on the bevel pinion shaft 34 while meshing with the side surface of the worm wheel 33A, is fixed to the forward / reverse shaft 35. It always meshes with a pair of loosely beveled gears 35A, 35B.

A forward / backward moving shaft 35 is fitted to a forward / backward moving shaft 35 so as to be integrally rotatable and axially slidable. The forward / backward moving engagement body 36 is selected with respect to the bevel gears 35A and 35B via a shifter 36A. Thus, the rotation of the bevel pinion shaft 34 is transmitted to the forward / reverse shaft 35 while switching between the forward direction and the reverse direction.
The shifter 36A is attached to the shifter shaft 36B, and a wire connecting member 36C is attached to the end of the shifter shaft 36B. By pulling the two wires connected to the wire connecting member 36C, the forward / backward moving occlusal body 36 is It is reciprocated to mesh with the bevel gear 35A or the bevel gear 35B.

  The transmission shaft 33, the bevel pinion shaft 34 and the forward / reverse shaft 35 are supported by the drive case 23. The worm gear 13A and the worm wheel 33A, the first gear 33B and the second gear 34A, the bevel pinion 34B and the bevel gears 35A and 35B, The travel power transmission means K1 of the drive mechanism K constitutes a speed reduction means K11, and the bevel pinion 34B, the pair of bevel gears 35A and 35B, and the forward / reverse advancement articulation body 36 constitute a forward / reverse switching means K12 of the travel power transmission means K1. .

One end of the forward / reverse shaft 35 protrudes from the drive case 23 and penetrates one (right side) side wall 20, and this side wall 20 forms an internal cavity chain transmission case, and this chain transmission case (side wall 20). A drive sprocket 35 </ b> C is provided on the front / rear shaft 35.
The front and rear shafts 5 are supported through the front and rear of the left and right side walls 20, and front and rear wheels 2 are attached to the respective end portions. A portion of the front and rear shaft 5 passing through the chain transmission case (side wall 20) has a driven sprocket 37. Is provided. A chain 39 is wound around the drive sprocket 35C, the driven sprocket 37, the tension sprocket 38A, and the idle sprocket 38B to constitute chain transmission means K13 that transmits the power of the forward / rearward-travel shaft 35 to the front and rear wheels 2.

From the drive transmission shaft 13 through the speed reduction means K11 and the forward / reverse switching means K12 to the chain transmission means K13 is a travel power transmission means K1 of the drive mechanism K. This travel power transmission means K1 is located on the right side of the drive transmission shaft 13. And is opposite to the arrangement of the steering handle H in the traveling machine body F.
1 to 3, 8, and 9, a mounting table 41 is attached on the left and right side walls 20 and the connecting plate 21 in front of the electric motor M, and a battery B that supplies electric power to the electric motor M is mounted on the mounting table 41. It is placed and stopped by a stopper 42.

  The left and right widths (longitudinal dimensions) of the mounting table 41 and the battery B are widths that can be arranged inside the left and right side walls 20, and are preferably less than or equal to the wheel width of the left and right wheels of the front and rear wheels 2. It is the arrangement which does not protrude from the right and left outward. The upper height of the battery B is substantially the same as the upper portion of the electric motor M, and the center of gravity of the body is lowered. Further, the battery B is as close as possible to the electric motor M.

A motor controller D that operates the electric motor M is attached between the left and right side walls 20 behind the electric motor M and on the connecting plate 21. Since the motor controller D has a small vertical width, the battery B can be disposed above the motor controller D.
The arrangement of the battery B and the motor controller D may be reversed, and the battery B may be mounted both before and after the electric motor M in order to enable long-time mowing work.

The arrangement of the battery B and the motor controller D before and after the electric motor M, the arrangement of the left and right steering handles H of the traveling machine body F and the traveling power transmission means K1 of the drive mechanism K, etc. The arrangement balance is good.
1 to 3 and 8 to 14, the steering handle H has a loop handle portion H2 at the proximal portion (free end side) of the handle body H1 made of a round pipe material, and a yoke portion H3 at the tip portion. The yoke portion H3 is supported by the support base 26 so as to be swingable about the vertical axis 45 and the horizontal axis 46.

A vertical axis 45 is rotatably supported on the support base 26, and a yoke portion H 3 is rotatably supported on the upper part of the vertical axis 45 via a horizontal axis 46. The guide plate 47 is fixed, and a horizontal turning guide portion 47A and an arcuate swing guide portion 47B rising from the end of the turning guide portion 47A are formed on the guide plate 47.
As shown in FIGS. 8 to 10, the guide plate 47 is disposed opposite to the inner space of the yoke portion H <b> 3, and the turning guide portion 47 </ b> A turns the steering handle H in the horizontal direction to set the turning angle with respect to the traveling machine body F. The swing angle setting means U is configured, and the swing guide portion 47B is configured as swing angle setting means Y that swings the steering handle H in the vertical direction to set the swing angle inclined outward and upward from the traveling machine body F. Yes.

The turning angle setting means U is a turning lock pin 4 that can protrude downward on the upper surface side of the turning guide 47A.
9, and a plurality of pivot pin holes 26 a that can engage with the pivot lock pin 49 are drilled around the vertical axis 45 in the support base 26, and the pivot lock pin 49 is engaged with and disengaged from the pivot pin hole 26 a. Thus, the steering handle H can be turned and locked.
A wire 50 is connected to the turning lock pin 49 and can be engaged and disengaged by a turning lever 51 provided in the loop handle portion H2. By grasping the turning lever 51, the turning lock pin 49 is turned into the turning pin hole 26a. Then, the steering handle H is turned horizontally, and the turning lever 51 is released to engage the turning lock pin 49 with the turning pin hole 26a to lock the steering handle H at the turned position.

  The swing angle setting means Y is provided with a swing lock pin 53 capable of projecting toward the horizontal shaft 46 on the yoke portion H3, and the swing guide portion 47B has an arc shape with the horizontal shaft 46 as the center of curvature. The swing guide portion 47B has a large number of swing pin holes 47C in which the swing lock pin 53 can be engaged in the vertical direction, and the swing lock pin 53 is engaged with and disengaged from the swing pin hole 47C. The steering handle H can be swung up and down and rocked.

  A wire 54 is connected to the rocking lock pin 53 and can be engaged and disengaged by a rocking lever 55 provided in the loop handle portion H2. By holding the rocking lever 55, the rocking lock pin 53 can be operated. The steering handle H is swung up and down by swinging out of the swing pin hole 47C, and the swing lock pin 53 is engaged with the swing pin hole 47C by releasing the swing lever 55 to swing the control handle H. Lock in position. The lever 51 may be a swing lever and the lever 55 may be a turning lever.

  11 to 15, the handle body H <b> 1 of the steering handle H is formed so as to be foldable in the middle, and a mounting plate 60 is fixed to an end portion on the proximal side of the handle body H <b> 1. The central portion of the C-shaped pipe material forming the handle portion H2 is fixed, the turning lever 51 and the swing lever 55 are pivotally supported on the mounting plate 60, and the battery management unit (BMU) 61 of the battery B A power switch 62 connected to is provided.

  When the power switch 62 is turned on, the battery management unit 61 supplies power from the battery B to the motor controller D, and the control current from the motor controller D to the electric motor M is supplied by the start switch S. . This start switch S is provided on the handle main body H1 in the vicinity of the loop handle portion H2, and the contact piece 10a can be pushed by the interlocking member 11 also provided on the handle main body H1.

The interlocking member 11 is formed by bending the band plate in an S shape when viewed from the side, and its base is pivotally supported by a horizontal bar 64 pivotally supported on the handle body H1, and the tip abuts against the contact piece 10a from below. Yes.
Both ends of the C-shaped pipe material forming the loop handle portion H2 are opposed to each other with the handle main body H1 interposed therebetween, and the work operation lever 7 is rotatably supported at both ends.
The work operation lever 7 includes a C-shaped pipe material 7a substantially similar to the loop handle portion H2, and an arm material fixed to both ends of the pipe material 7a and rotatably fitted to both ends of the loop handle portion H2. 7b and a working piece 8 made of a pipe or a round bar erected between the arm members 7b at both ends, and the working piece 8 is located below the middle part in the longitudinal direction of the interlocking member 11.

The loop handle portion H2 and the work operation lever 7 each have a grip portion for gripping an operator on the outer end side, and the work operation lever 7 is provided by a tension spring 63 stretched between the action piece 8 and the handle body H1. The gripping portion is in a posture away from the gripping portion of the loop handle portion H2.
The work operation lever 7 swings so that the gripping portion approaches the gripping portion of the loop handle portion H2, so that the arm material 7b rotates around both ends of the loop handle portion H2, and the action piece 8 moves in an arc upward. Then, the contact member 10 is brought into contact with and pushed up (indicated by a two-dot chain line in FIG. 13), and the contact piece 10a is pushed by the tip of the interlock member 11 to activate the start switch S. The interlocking member 11 converts the movement of the small curvature arc of the action piece 8 into the movement of a large curvature arc, and appropriately pushes up the contact piece 10a by moving its tip up and down close to vertical.

At the upper part of the handle main body H1, a check means R for checking and releasing the swing of the work operation lever 7 is provided. The check means R includes a check member 9 provided on the horizontal bar 64 and a return means (return spring) 67 that urges the check member 9 to the check position.
The restraining member 9 protrudes forward from the horizontal bar 64 and has an engagement portion 9a whose front end engages with the action piece 8; a movement allowance portion 9b that allows movement of the action piece 8 on the upper surface side of the protruding portion; And a release lever portion 9c protruding downward from the horizontal bar 64.

The release lever portion 9c is provided with a connection pin 66 for connecting a return spring 67. The connection pin 66 extends below the handle main body H1, and the swinging range of the release lever portion 9c, that is, the check member 9 is fixed. It also serves as a regulating member that sets the swing range.
When the restricting member (connecting pin) 66 is in contact with the lower surface of the handle body H1 by the urging force of the return spring 67, the restraining member 9 is in the restraining position, and the engaging portion 9a is in the swinging direction of the work operation lever 7. When the work operation lever 7 is to be rotated, the engagement portion 9 a comes into contact with the operation piece 8 to restrict the rotation of the work operation lever 7.

When the check member 9 is rotated downward from the check position by the release lever portion 9c against the return spring 67, the restricting member 66 once comes away from the lower surface of the handle body H1, but again comes into contact with the check member 9 with the tip downward. Stop and place the restraining member 9 in the release position.
At this release position, the engagement portion 9a is released from the arc movement locus of the action piece 8 to release the restraint, and when the work operation lever 7 is rotated, the movement allowing portion 9b faces the action piece 8 and the work operation lever 7 The start switch S can be operated by allowing the rotation. Since an annoying operation of releasing the check member 9 is performed before the rotation operation of the work operation lever 7, the worker is conscious of “the start switch S is now activated”.

When the action piece 8 faces the movement allowance portion 9b, when the hand is released from the release lever portion 9c, the check member 9 is urged to the check position by the return means (return spring) 67, and the movement allowance portion 9b acts. Although it abuts on the piece 8, the action piece 8 does not obstruct and move to the check position.
When the work operation lever 7 is returned and rotated so as to turn off the start switch S, or when the work operation lever 7 is released, the work operation lever 7 is returned by the tension spring 63 and the action piece 8 is disturbed. As a result, the check member 9 is automatically and unconsciously returned to the check position.

A forward / reverse lever 71 is provided on the upper lower surface of the handle body H1 via a pivot shaft 70. The forward / reverse lever 71 is guided by a guide groove formed in the attachment plate 60 at the proximal end of the handle main body H1 so as to be positioned at a forward position, a reverse position, and a neutral position therebetween.
Wires are connected to both ends of the base member 71A of the forward / reverse lever 71 via springs, and these wires are connected to the wire connection member 36C of the forward / reverse switching means K12 of the drive mechanism K, via the shifter 36A. The forward / backward moving occlusal body 36 on the forward / backward moving shaft 35 can be slid.

A rotation speed changeover switch 69 for switching the rotation speed of the electric motor M between stepwise and steplessly is provided on the upper surface of the middle portion of the handle body H1, and is connected to the motor controller D.
1 and 15, the motor controller D includes a basic function for supplying electric power to the electric motor M and starting it, and a forward / reverse rotation control means D1 for switching forward / reverse rotation of the electric motor M. A step control means D2 for stepless switching, a speed control means D3 for maintaining a constant speed after slowly increasing the speed from start, a brake control means D4 for quickly reducing the speed when stopping, etc. The brake control means D4 has a ground braking circuit or a regenerative braking circuit. Any one of these control means D1-D4 may be sufficient.

Next, the mowing work of the walking mower 1 will be described.
The mower 1 is carried into the grassland, and the power switch 62 is turned on so that power can be supplied from the battery B to the motor controller D via the battery management unit 61.
The work operation lever 7 of the loop handle portion H2 is restrained by the restraining member 9 so that it cannot be pivoted, and the work manipulation lever 7 is pivoted while holding the release lever portion 9c and pivoting the restraining member 9 to the release position. . The start switch S is actuated by the rotation of the work operation lever 7, and the motor controller D is activated.

When the motor controller D is activated, the electric motor M slowly increases from the start by the rotation speed control means D3, reaches the rotation speed set by the high / low switching control means D2, and then transmits the drive while maintaining the rotation speed. The shaft 13 is driven, the cutting blade body 3 is rotated at a constant rotational speed for mowing, and the front and rear wheels 2 are driven to advance at a constant speed.
When the grass is wound around the cutting blade body 3 during mowing, the current change of the electric motor M is detected and the forward / reverse rotation control means D1 is operated to reverse the electric motor M and unwind the grass. In addition, when the walking mower 1 cannot move forward due to an obstacle during mowing, the electric motor M is reversely rotated by the forward / reverse rotation control means D1 to move the walking mower 1 backward.

When stopping the mowing operation by returning the work operation lever 7 or switching the forward / backward movement, the electric motor M is decelerated from the mowing rotational speed. At that time, the ground braking circuit or the regeneration of the brake control means D4 is used. The brake is braked by the braking circuit, and the rotation stop and the travel stop of the cutting blade body 3 are promptly performed.
In the present invention, the shape of each member and the positional relationship between the front, back, left, right, and top in the embodiment are best configured as shown in FIGS. However, it is not limited to the said embodiment, A member, a structure can be variously deformed, and a combination can also be changed.

For example, the output shaft M1 of the electric motor M may be fitted and coupled to the upper portion of the drive transmission shaft 13 to omit the cylinder coupling 27. The cutting blade power transmission means K2 uses an electromagnetic clutch for the cutting blade clutch C. May be.
The forward / reverse switching means K12 of the traveling power transmission means K1 may be constituted by a pair of bevel gears for power transmission, and the forward / reverse switching may be performed by forward / reverse switching of the electric motor M.

DESCRIPTION OF SYMBOLS 1 Walking type mower 2 Wheel 3 Cutting blade body 4 Cutting blade axis 5 Front / rear axis 7 Work operation lever 8 Acting piece 9 Checking member 9a Engagement part 9b Movement allowance part 10 Switch body 10a Contact piece 11 Interlocking member 13 Drive transmission shaft 23 Drive case 26 Support base 27 Cylinder coupling 31 Cutting blade 62 Power switch 67 Return means B Battery C Cutting blade clutch D Motor controller E Forward / reverse rotation control means F Traveling machine G Height switching control means H Steering handle H1 Handle body K Drive mechanism K1 Traveling power transmission means K2 Cutting blade power transmission means M Electric motor M1 Output shaft R Checking means S Start switch

Claims (4)

The electric motor (M) whose output shaft (M1) is vertically oriented and the power of the output shaft (M1) of the electric motor (M) are trimmed to the traveling machine body (F) in which the front and rear wheels (2) are paired on the left and right. A cutting mechanism shaft (4) provided with the blade body (3) and a drive mechanism (K) for transmitting power to the front and rear shafts (5) of the front and rear wheels (2);
The output shaft (M1) of the electric motor (M) is arranged concentrically above the cutting blade shaft (4) and connected via a cutting blade clutch (C) for connecting and disconnecting the rotary power, F) a battery (B) is disposed at least one of the front and rear of the electric motor (M) on the upper and left and right wheels (2) .
The cutting blade shaft (4) is disposed at the approximate center of the front and rear, left and right of the traveling machine body (F), the battery (B) is disposed on one front and rear of the electric motor (M), and the electric motor is disposed on the other front and rear of the electric motor (M). A motor controller (D) for operating (M) is disposed, the tip of the steering handle (H) is attached to the left and right sides of the traveling machine body (F), and the traveling machine body (M1) is connected to the traveling machine body (M1) from the output shaft (M1). F) travel power transmission means (K1) of the drive mechanism (K) is arranged on the left and right other side of F),
The traveling machine body (F) has left and right side walls (20) connected by a connecting plate (21), and a pipe frame (25) is fixed to the upper surface of the connecting plate (21).
The pipe frame (25) has a substantially V-shaped bent portion, a first side portion extending from one side of the bent portion, and a second side portion extending from the other side of the bent portion. Is formed,
The bent portion protrudes from one of the left and right side walls (20), and a support base (26) for attaching the steering handle (H) is provided on the protruding portion,
The one side portion is disposed between the electric motor (M) and the battery (B), and the other side portion is disposed between the electric motor (M) and the motor controller (D). Type mower. The steering handle (H) is arranged on the left and right sides of the traveling body (F) around the vertical axis (45) rotatably supported by the support base (26). On one side
The walk-type grass mower according to claim 1, wherein the walk-type mower is capable of turning from one front to the other in a range of the other front and rear, which is the left and right side of the motor controller (D) .   The drive transmission shaft (13) is directly connected to the output shaft (M1) of the electric motor (M), the drive transmission shaft (13) and the cutting blade shaft (4) are connected by a cutting blade clutch (C), and the drive The walking type according to claim 1 or 2, wherein a traveling power transmission means (K1) with a deceleration function of the drive mechanism (K) is provided between the transmission shaft (13) and the front and rear shaft (5). Mower.   The electric motor (M) is an inverter motor controlled by a motor controller (D). The motor controller (D) has a forward / reverse rotation control means (D1) for switching forward / reverse rotation of the electric motor (M), and rotation. High / low switching control means (D2) for switching the number between high and low steps or steplessly, a rotational speed control means (D3) for maintaining a constant rotational speed after slowly increasing the speed from the start, and a brake for quickly reducing the rotational speed when stopping The walk-type mower according to any one of claims 1 to 3, comprising at least one of control means (D4).

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