JP6034752B2 - Walking mower - Google Patents

Description

  The present invention relates to a walk-type mower that cuts weeds on a farm road, a fence, etc., and cuts grass on a grassland.

Conventionally, there is a mower described in Patent Document 1 as a walking mower.
This mowing machine includes a traveling machine body in which front and rear wheels are suspended in a pair of left and right wheels, and is provided with a grass cutting unit that cuts grass with a cutting blade that rotates on the lower surface side of the traveling machine body, and mows grass while traveling.
Further, in the mower, a transmission case that houses an engine and a power transmission mechanism that transmits the power of the engine to the cutting blades and the front and rear wheels is provided at a substantially central portion in the front-rear direction of the traveling machine body.

  Further, Patent Document 1 describes that an electric motor may be employed instead of an engine as a driving part of a mower.

JP 2013-78333 A

  When an electric motor is used as the driving part of the mower, a battery for the power supply is required. When this electric mower is used, a rechargeable battery that is removed and charged by a charger is used. It is considered to be. In this case, since the battery must be removed and charged with a charger when the amount of charge decreases, it must be easily removable.

  In view of the above problems, an object of the present invention is to provide an electric walking mower that can easily fix and release a battery from a traveling machine body.

The technical means taken by the present invention to solve the technical problems are characterized by the following points.
In the present invention , a traveling blade supported so as to be able to travel by wheels, a cutting blade that cuts grass, an electric motor that drives the cutting blade and the wheel, and a battery for power supply disposed on one side of the traveling body. And a battery mounting member in which the battery is detachably loaded from the front and rear direction outward side, and a swing arm that is swingable up and down and that can be held in a swinging position. The swing arm is provided with a battery presser that detachably engages with the battery at a position where the swing arm is swung upward to prevent the battery from being detached from the battery mounting member. An upper cover that covers the battery and a battery cover that covers the battery from outside in the front-rear direction are provided, and the battery cover is engaged with and disengaged from the upper cover with the battery presser engaged with the battery. Standing in it and to engage the battery cover to the top cover to hold the swinging arm upwards swing position, characterized in that supporting the battery cover to the swing arm.

Further, the battery non-placement side of the upper cover is engaged with the traveling vehicle body so that the battery placement side of the upper cover swings up and down and the upper cover opens and closes, and the battery cover is closed with the upper cover closed. The opening / closing operation of the upper cover is fixed by being engaged with the upper cover .

Further, the battery cover is supported by the swing arm so as to be swingable and openable, and an engagement recess is provided on one of the upper cover and the battery cover, and the other is detachably engaged with the engagement recess. When the battery cover is closed while the upper cover is closed, the engaging protrusion is engaged with the engaging recess by elastic deformation of at least one of the upper cover and the battery cover.

Further, on a traveling machine body supported so as to be able to travel by wheels, a cutting blade that cuts grass, an electric motor that drives the cutting blade and the wheel, a battery for a power source disposed on one side of the traveling machine body, There is provided a battery mounting member that is detachably inserted and held from the outer side in the front-rear direction, and a swing arm that is swingable up and down and that can be held at a position that swings upward. The arm is provided with a battery presser that is detachably engaged with the battery at a position where the swing arm is swung upward to prevent the battery from being detached from the battery mounting member. Provided on both sides, the swing end side of the left and right swing arm is connected by a handle for lifting the traveling machine body .

The present invention has the following effects.
According to the present invention , after the battery is inserted into the battery mounting member, the swing arm is swung upward to engage the battery presser with the battery, and the swing arm is held at the swing position. The battery can be easily fixed, and the battery can be easily unfixed by releasing the holding of the swing arm at the upper swing position and swinging it downward.

Further, by covering the battery with the upper cover and the battery cover, the battery can be protected against rainwater and dust.
Further, by swinging the swing arm upward to engage the battery presser with the battery and engaging the battery cover with the upper cover in this state, the battery is fixed and the swing arm is held at the upward swing position. And the battery cover can be fixed, and operability is good.

Also, the swing arm is swung upward to engage the battery presser with the battery, and the battery cover is engaged with the closed upper cover in this state, thereby fixing the battery and swinging the swing arm upward. In addition to holding in position and fixing the battery cover, the upper cover can be fixed, and operability is good.
Further , when the battery cover is closed with the upper cover closed, the engagement protrusion is engaged with the engagement recess by elastic deformation of at least one of the upper cover and the battery cover, and the upper cover and the battery cover are fixed. . As a result, the upper cover and the battery cover can be easily fixed and released.

Further, the handle for lifting the traveling machine body can also be used as a handle for swinging the swing arm up and down, so that the member can be shared.

It is a schematic sectional side view of the main-body part of a walk-type mower. It is a whole side schematic diagram of a walking type mower. It is the whole plane schematic diagram of a walk-type mower. It is a schematic front sectional drawing of the main-body part of a walk-type mower. It is a top view of a traveling body. It is side surface sectional drawing of a battery arrangement | positioning part. It is a perspective view of an upper cover. It is side surface sectional drawing of the front part support part of an upper cover. It is a perspective view of a battery cover. It is side surface sectional drawing of the state which closed the battery cover. It is side surface sectional drawing of the state which opened the battery cover.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
2 and 3, reference numeral 1 denotes a walking type mower capable of cutting grass on a slope while traveling on a slope of a farm road or a fence.
As shown in FIGS. 2 and 3, this walking type mower 1 includes a traveling machine body 4 in which front and rear wheels 2, 3 are suspended in a pair, a steering handle 5 whose tip side is attached and supported on the traveling machine body 4, A mowing unit 7 that cuts grass with a cutting blade 6 that rotates about a direction axis, an electric motor 8 that is a driving source of the mowing unit 7 and the front and rear wheels 2 and 3, and a rotary mowing power of the electric motor 8. 7 and a power transmission mechanism 9 for transmitting to the front and rear wheels 2 and 3, a battery 11 for power supply, a motor controller 12 for controlling the electric motor 8, and the electric motor 8, battery 11 and motor controller. 12 includes an upper cover 13 that covers 12 and the like from above, and a battery cover 14 that covers the battery 11.

  As shown in FIGS. 1, 4, and 5, the traveling machine body 4 includes a left and right main frame 16, a transmission case 17 fixed to the left and right outer sides of the left main frame 16, and a right main frame 16. A side plate 18 fixed to the outside in the left-right direction, a front connection plate 19 that connects the front portions of the left and right main frames 16, a center connection frame 20 that connects the center portions in the front-rear direction of the left and right main frames 16, and left and right And a battery support frame 21 provided at the rear of the main frame 16.

The left and right main frames 16 extend outward in the left-right direction from the upper wall 16a, the vertical wall 16b extending downward from the outer end in the left-right direction of the upper wall 16a, and the middle part in the front-rear direction at the lower end of the vertical wall 16b. It has the extended wall 16c extended (refer FIG. 4).
The front end of the vertical wall 16b of each of the left and right main frames 16 is inclined toward the front upper side, and the rear end of the vertical wall 16b is inclined toward the rear upper side (see FIG. 1).

  As shown in FIG. 3, the front axle 22 is arranged in the left-right direction on the front end side of the traveling machine body 4, and the rear axle 23 is arranged in the left-right direction on the rear end side of the traveling machine body 4. A front wheel 2 is attached to both left and right ends of the front axle 22 so as to be integrally rotatable, and a rear wheel 3 is attached to both left and right ends of the rear axle 23 so as to be integrally rotatable. The left and right axles 22 and 23 pass through the vertical wall 16b of the main frame 16 and are supported by the vertical wall 16b so as to be rotatable around a left and right axis.

  The left and right sides of the front connection plate 19 are placed on the upper surfaces of the upper walls 16a of the left and right main frames 16, and are fixed to the upper walls 16a. On the front end side of the front connection plate 19, a pair of left and right slits 24 that are long in the front-rear direction are formed in a left-right distribution form from the center in the left-right direction of the traveling machine body 4. Further, a controller mounting bracket 25 is fixed to the upper surface of the front connection plate 19, and the motor controller 12 is mounted on the controller mounting bracket 25 so as to be inclined rearward and spaced upward from the front connection plate 19.

The central connecting frame 20 is formed by bending the pipe material to the left in an open V-shape in plan view, and the right side of the central connecting frame 20 protrudes rightward from the right main frame 16. A handle support portion 26 is provided on the front end side of the steering handle 5 and supported on the handle support portion 26.
As shown in FIGS. 2 and 3, the steering handle 5 has a handle body 27 made of a pipe material that can be folded in the middle. A yoke portion 28 is provided at the distal end portion of the handle main body 27, and the yoke portion 28 is supported by the handle support portion 26 so as to be swingable about a vertical axis 29 and a horizontal axis 30. The steering handle 5 can be locked in stages to a plurality of swing positions around the horizontal axis 30 and can be locked in stages to a plurality of swing positions around the vertical axis 29.

  The handle body 27 has a power switch 31, a start switch 32, a handle portion 33, and a work operation lever 34 on the hand side (the free end side). When the power switch 31 is turned on, power is supplied from the battery 11 to the motor controller 12. A control current from the motor controller 12 to the electric motor 8 is supplied by turning on the start switch 32. The handle portion 33 is formed by bending a pipe material into a C shape, and is fixed to the hand portion of the handle body 27.

  The work operation lever 34 is formed in a C-shape similar to the handle portion 33, and is provided at the hand portion of the handle body 27 so as to be swingable up and down. Is biased away from the handle portion 33. The start switch 32 is actuated by swinging the work operation lever 34 closer to the handle portion 33, whereby a control current is supplied from the motor controller 12 to the electric motor 8.

A rotation speed changeover switch 36 that switches the rotation speed of the electric motor 8 steplessly is provided on the upper surface of the middle part of the handle body 27. The rotation speed changeover switch 36 is connected to the motor controller 12.
The battery support frame 21 is disposed between the side plate 18 and the transmission case 17 and includes a main frame 37 and a battery mounting base 38 as shown in FIG.

The main frame 37 includes a mounting member mounting portion 39, a mounting wall portion 40, a connecting wall portion 41 that connects the mounting wall portion 40 and the mounting member mounting portion 39, and a support stay 42.
The mounting member attachment portion 39 includes an upper wall 39a, a lower wall 39b positioned below the upper wall 39a, and a front wall 39c that connects the front end side of the upper wall 39a and the lower wall 39b. The upper wall 39a and the lower wall 39b are formed to be inclined upward and the front wall 39c is formed to be inclined forward.

The mounting wall portion 40 is provided on the front end side of the left and right main frames 16 so as to extend between the upper walls 16a of the left and right main frames 16, and is fixed to the upper walls 16a with bolts.
The connecting wall portion 41 connects the front end of the mounting wall portion 40 and the rear end of the lower wall 39b of the mounting member mounting portion 39.
The support stay 42 is fixed to the front lower end side of the front wall 39c of the mounting member mounting portion 39, and extends from the left and right sides of the lower end of the fixing portion 42a to the front side. And an attachment portion 42b fixed to the wall 16a by bolts.

The battery mounting table 38 includes an upper wall 38a and left and right side walls 38b extending downward from the left and right sides of the upper wall 38a. The upper wall 38a is formed in an inclined shape that moves upward as it goes rearward.
The mounting wall 40 is inserted between the lower ends of the left and right side walls 38 b of the battery mounting table 38, and the side wall 38 b is fixed to the mounting wall 40.

The battery 11 is supported on the battery support frame 21. The battery 11 employs a rechargeable lithium ion battery 11 that is removed and charged by a charger when the amount of charge decreases.
Further, the battery 11 is held in a state where the width direction thereof is along the left-right direction, one side surface 11a of the thickness direction faces upward, the bottom portion 11b faces frontward, and is inclined obliquely upwardly inclined rearward. Has been. In addition, a handle 11 d is provided on the top 11 c of the battery 11, and the handle 11 d is provided so as to be biased toward the upper side in the arrangement state of the battery 11.

  A battery mounting member 43 is mounted and supported on the mounting member mounting portion 39 of the battery support frame 21 so that the bottom 11b side of the battery 11 is mounted from the rear side. The battery mounting member 43 is formed in a box shape whose upper, lower, left and right sides and front surface are closed and opened rearward, and the opening on the rear surface is a battery insertion port 43a into which the bottom 11b side of the battery 11 is inserted. The battery mounting member 43 is sandwiched between the upper and lower walls 39a and 39b of the mounting member mounting portion 39, and the front wall 43a of the battery mounting member 43 is screwed to the front wall 39c of the mounting member mounting portion 39. The battery mounting member 43 is attached to the mounting member mounting portion 39 as an upwardly inclined shape toward the rear, and the battery inlet 43a is opened obliquely upward toward the rear.

Further, the right side surface of the battery mounting member 43 is in contact with the side plate 18, and the lower part of the left side surface is in contact with the transmission case 17.
An electrical connection terminal 44 to which a connection part provided on the bottom part 11 b of the battery 11 is connected is provided at the lower part on the rear side inside the battery mounting member 43. A flange portion 46 to which a sealing material 45 is attached is formed on the upper surface side and the left upper portion of the rear end portion of the battery mounting member 43.

A portion of the battery 11 that protrudes rearward from the battery mounting member 43 is placed and supported on the upper surface of the upper wall 38 a of the battery placement table 38. An upper surface of the upper wall 38 a of the battery mounting table 38 is a guide surface when the battery 11 is attached to and detached from the battery mounting member 43.
By disposing the battery 11 in the laid state, the battery 11 can be disposed at a low position, and the center of gravity of the body of the mower 1 can be lowered.

Moreover, even if the battery 11 is placed in a laid state by allowing the battery 11 to be detachable in an inclined direction inclined obliquely upward with respect to the battery mounting member 43, the battery 11 can be easily attached and detached. Can be done.
As shown in FIG. 1, the mission case 10 is disposed at a substantially central portion in the front-rear direction of the traveling machine body 4, and the mission case 10 is attached to and supported by the traveling machine body 4. The electric motor 8 is disposed and fixed above the mission case 10, and the mowing unit 7 is disposed below the mission case 10. The electric motor 8 is located at a substantially central part in the front, rear, left, and right of the traveling machine body 4. A battery 11 is located behind the mission case 10, a motor controller 12 is located in front of the mission case 10, and the battery 11 and the motor controller 12 are located so as to overlap the mission case 10 in the vertical direction.

Further, the battery 11 is disposed in the vicinity of the transmission case 10 and the electric motor 8 in the front-rear direction, and the center of gravity of the battery 11 is located in front of the rear axle 23 (center side of the traveling machine body 4). The center of gravity of the motor controller 12 is located behind the front axle 22 (center side of the traveling machine body 4).
With the arrangement configuration, the arrangement balance of the mission case 10, the electric motor 8, the battery 11, the motor controller 12, and the mowing unit 7 can be improved.

The battery 11 may be disposed in front of the mission case 10 and the motor controller 12 may be disposed behind the mission case 10.
The electric motor 8 employs a three-phase induction motor such as a brushless motor that is controlled by an inverter, and the number of rotations and the direction of rotation of the cutting blade 6 are controlled via a motor controller 12 incorporating an inverter and the like. The output shaft 47 of the electric motor 8 protrudes downward.

  The mowing unit 7 includes a cutting blade drive shaft 48 that is rotatably supported around the vertical axis at the lower portion of the mission case 10, a rotating disk 49 that is attached and fixed to the cutting blade driving shaft 48, and the rotating disk 49. And a cutting blade 6 attached to the. The cutting blade drive shaft 48 is concentric with the output shaft 47 of the electric motor 8. The central portion of the rotating disk 49 is fixed to the cutting blade drive shaft 48. The cutting blade 6 is rotatably provided on the outer peripheral side of the rotating disk 49 via a pin.

As shown in FIG. 4, the power transmission mechanism 9 in the transmission case 10 includes a cutting blade system power transmission path 50 that transmits power from the output shaft 47 of the electric motor 8 to the cutting blade drive shaft 48 in the vertical direction, and the cutting blade. A traveling system power transmission path 51 that branches from the system power transmission path 50 and transmits power to the front and rear wheels 2 and 3 is provided.
The cutting blade system power transmission path 50 transmits the power to the cutting blade drive shaft 48 from the transmission shaft 53 connected to the output shaft 47 of the electric motor 8 via the coupling 52 in a connectable manner. A cutting blade clutch 54 is provided.

  The traveling system power transmission path 51 is transmitted to the worm gear 56 fixed to the transmission shaft 53, the worm wheel 57 meshing with the worm gear 56, the transmission gear 58 meshing with the worm wheel 57, and the transmission gear 58. The travel drive shaft 59 includes a forward / reverse switching mechanism 60 that transmits power to the travel drive shaft 59 by rotating it forward or backward. The forward / reverse switching mechanism 60 has a function as a traveling clutch that interrupts power transmitted from the transmission gear 58 to the traveling drive shaft 59. The power transmitted to the travel drive shaft 59 is transmitted to the front and rear axles 22 and 23 via the transmission mechanism in the transmission case 17.

  Handles 62 </ b> F and 62 </ b> R (split pods) are provided before and after the traveling machine body 4. The front handle 62F is formed by bending a pipe material into a U-shape, and is fixed to the main frame 16 whose left and right ends are on the same side in the left-right direction. The rear handle 62R is formed of a straight pipe material, and connects the swing end side of the left and right swing arms 63 supported on the rear portion of the traveling machine body 4 so as to be swingable up and down around the left and right axis.

The front and rear handles 62F and 62R are used as grip portions when the mower 1 is lifted. Further, the front and rear handles 62F and 62R serve to push down the mowed grass in the traveling direction when mowing the grass while running the mower 1 forward or backward.
The left and right swing arms 63 are formed long in the front-rear direction, and the front end side thereof is disposed on the inner side in the left-right direction of the side wall 38b of the battery mounting table 38 that is on the same side in the left-right direction. The front end side of the swing arm 63 is attached to a side wall 38b of the battery mounting table 38 via a support shaft 64 made of a bolt so as to be rotatable about a left and right axis. It can be swung freely. Therefore, the rear handle 62 </ b> R connects the rear end side of the left / right swing arm 63.

A stopper 65 located between the support shaft 64 and the rear handle 62R is formed on the lower edge side of each of the left and right swing arms 63 so as to extend outward in the left-right direction. When the stopper 65 comes into contact with the contact portion 66 on the upper surface of the rear end portion of the vertical wall 16b of the main frame 16, the downward swing of the swing arm 63 is restricted.
Further, a battery presser 67 that is engaged with the battery 11 when the left / right swing arm 63 is swung upward is provided so as to cover the left / right swing arm 63.

  The battery retainer 67 is formed by a long member that is L-shaped in a side view and is long in the left-right direction, and is fixed to the upper edge side of the swing arm 63 between the support shaft 64 and the rear handle 62R. Further, when the swing arm 63 is swung upward, the battery presser 67 is engaged (fitted) with a corner portion between the surface 11e facing the lower side of the battery 11 and the top portion 11c. Is detached from the battery mounting member 43.

  In the closed state, the upper cover 13 is formed so as to extend from the front end to the rear end of the traveling machine body 4 in the closed state. The controller 12, the electric motor 8, the mission case 10 and the like are covered from above. In FIG. 1, the phantom lines indicate the front side of the upper cover 13 in the open state.

  As shown in FIGS. 1 and 7, the upper cover 13 has an upper wall 68 and left and right side walls 69, and a substantially central portion 68 a before and after the upper wall 68 protrudes upward corresponding to the electric motor 8. It is made into a shape. The front portion 68b of the upper wall 68 is formed so as to move downward as it goes forward, and the rear end portion 68c is formed in a curved shape along the shape of the handle 11d of the battery 11. Further, an engaging recess 70 is formed in the rear portion of the upper wall 68 of the upper cover 13 so as to be recessed from the upper side to the lower side on the front side of the curved rear end portion 68c and on both the left and right sides.

A portion 71 between the left and right engaging recesses 70 of the upper wall 68 of the upper cover 13 is formed in a flat shape.
The left side wall 69 of the upper cover 13 is formed along the upper surface of the transmission case 17, and the right side wall 69 of the upper cover 13 overlaps the upper end side of the side plate 18 in the left-right direction.

  A support tool 73 is attached and fixed to the lower surface front end side of the upper wall 68 of the upper cover 13. The support member 73 is formed of a plate material, is superposed on the lower surface of the upper wall 68 of the upper cover 13, and is fixed to the mounting wall 76 by bolts 74 and nuts 75, and extends downward from the left and right sides of the mounting wall 76. And a retaining wall 77 formed. A lower portion of each of the left and right latching portions 77 is a hook portion 78 formed in a hook shape.

  As shown in FIG. 8A, the hook portion 78 of the support 73 is inserted into the slit 24 formed on the front end side of the traveling machine body 4 in a state where the upper cover 13 is closed, and the hook portion 78. The front end portion 78 a contacts the lower surface of the front connecting plate 19, thereby restricting the upper part of the upper cover 13 from moving upward and the rear part from moving downward. Further, when the upper cover 13 is closed, the base portion 78 b of the hook portion 78 is positioned in the slit 24, thereby restricting the back and forth movement of the upper cover 13.

  Further, as shown in FIG. 8 (b), the support tool 73 swings upward around the front part so that the rear part (battery 11 arrangement side) moves upward from the state in which the upper cover 13 is closed. It is allowed to move. Therefore, the upper cover 13 opens and closes by swinging up and down around the front. Further, as shown in FIG. 8B, by swinging upward from the closed state of the upper cover 13, the hook portion 78 can be removed upward from the slit 24, and the hook portion 78 can be removed from the slit 24. By doing so, the upper cover 13 can be removed. Therefore, when the inside of the upper cover 13 needs to be cleaned, the upper cover 13 can be easily removed by removing the hook portion 78 of the support tool 73 from the slit 24, and the hook portion of the support tool 73 can be removed. The upper cover 13 can be easily attached by inserting 78 into the slit 24.

In addition, the upper cover 13 is in contact with a sealing material 45 attached to the flange portion 46 of the battery mounting member 43 in a closed state, thereby preventing the grass from entering the space where the battery 11 is disposed.
As shown in FIG. 6, the battery cover 14 is located behind the battery 11 and covers the battery 11 from the rear.

  As shown in FIGS. 9, 10, and 11, on both the left and right sides of the lower portion of the battery cover 14, pivot portions 79 that are supported by the swing arm 63 so as to be swingable about the left and right axes are provided. The battery cover 14 is opened and closed by swinging the swing arm 63 upward and swinging back and forth while the battery retainer 67 is engaged with the battery 11 to open and close the battery placement space.

A pivot 80 that pivotally supports the battery cover 14 is provided so as to connect the left and right swing arms 63 across the left and right swing arms 63 between the support shaft 64 and the rear handle 62R. The pivot 80 passes through the left and right pivots 79 of the battery cover 14, so that the battery cover 14 is pivotally supported by the left and right swing arm 63.
In addition, on both the left and right sides of the lower part of the battery cover 14, arm engagement grooves 81 located on the outer side in the left-right direction of the pivot support 79 are formed in an open downward shape, and the swing arms 63 are formed in the arm engagement grooves 81. The middle part can be inserted in a removable manner.

A horizontal rib 83 is formed in the left-right direction at the front lower portion of the back wall 82 of the battery cover 14, and a plurality of vertical ribs 84 extending vertically from the horizontal rib 83 are provided on both the left and right sides of the battery cover 14 (this embodiment). 3 in the form).
In addition, a plurality of (9 in this embodiment) rib walls 86 are formed side by side in the left-right direction on the center side in the left-right direction of the lower surface of the upper wall 85 of the battery cover 14.

Engagement protrusions 87 are formed to protrude downward on the left and right sides of the lower surface of the upper wall 85 of the battery cover 14. A plurality (three in this embodiment) of the engaging protrusions 87 are formed side by side on the left and right sides of the lower surface of the upper wall 85 of the battery cover 14.
Further, the engagement protrusion 87 swings the battery cover 14 about the pivot 80 in a state where the swing arm 63 is swung upward and the battery presser 67 is engaged with the battery 11, so that the upper cover 13 is swung. The engaging cover 70 can be freely engaged and disengaged, and by engaging the engaging protrusion 87 with the engaging recess 70, the upper cover 13 can be fixed and the battery cover 14 can be fixed. The swing arm 63 can be held in a position that is swung upward.

Further, as shown in FIG. 6, with the engaging protrusion 87 engaged with the engaging recess 70, the horizontal rib 83 and the upper vertical rib 84 come into contact with the battery retainer 67 from behind, and the battery retainer 67. Hold down. In addition, the rib wall 86 on the upper portion of the battery cover 14 contacts the portion 71 between the engagement recesses 70 on the rear portion of the upper cover 13 with the engagement protrusion 87 engaged with the engagement recess 70.
Further, when the battery cover 14 is swung back and forth and the engagement protrusion 87 is engaged with and disengaged from the engagement recess 70, the battery cover 14 and the upper cover 13 are elastically deformed, so that the engagement recess 70 is On the other hand, the engagement protrusion 87 is engaged and disengaged (only one of the battery cover 14 and the upper cover 13 may be elastically deformed). Thereby, the battery cover 14 can be easily engaged and disengaged with respect to the upper cover 13, and the operability is good.

As shown in FIG. 11, when the battery cover 14 is swung rearward about the pivot 80, the upper surface 81 a of the arm engagement groove 81 comes into contact with the swinging arm 63, thereby moving the battery cover 14 to the rear. Is controlled.
In the mower configured as described above, the battery 11 can be protected from rainwater and dust by disposing the battery 11 in the upper cover 13 and the battery cover 14.

  In order to remove the battery 11, the battery cover 14 is swung backward to disengage the engaging projection 87 from the engaging recess 70, and the battery cover 14 is lowered downward together with the rear handle 62R and the swing arm 63. The battery 11 can be removed by opening the upper cover 13, and the battery 11 can be easily removed even if the battery 11 is covered with a cover.

In order to mount the battery 11, the battery 11 is inserted into the battery mounting member 43, the upper cover 13 is closed, the rear handle 62R is gripped, and the left and right swing arm 63 is pulled up so that the battery presser 67 is By engaging the battery cover 14 forward and engaging the engaging protrusion 87 with the engaging recess 70, the battery 11 can be easily fixed.

  In the above configuration, the engagement protrusion 87 may be provided on the upper cover 13 and the engagement recess 70 may be provided on the battery cover 14.

2 Front wheel 3 Rear wheel 4 Traveling machine body 6 Cutting blade 8 Electric motor 11 Battery 13 Upper cover 14 Battery cover 43 Battery mounting member 62R Handle 63 Swing arm 67 Battery retainer 70 Engaging recess 87 Engaging protrusion

Claims (4)

A cutting blade that cuts grass on a traveling machine body supported so as to be able to travel by wheels, an electric motor that drives the cutting blade and the wheel, a battery for power supply arranged on one side of the traveling machine body, and the battery Is provided with a battery mounting member that is detachably loaded from the outer side in the front-rear direction, and a swing arm that is swingable up and down and that can be held at a position that swings upward,
A battery presser is provided on the swing arm to removably engage the battery at a position where the swing arm is swung upward to prevent the battery from being detached from the battery mounting member .
An upper cover that covers the electric motor and the battery from above, and a battery cover that covers the battery from the outside in the front-rear direction,
With the battery presser engaged with the battery, the battery cover is detachable with respect to the upper cover, and the battery cover is engaged with the upper cover, thereby holding the swing arm in the upward swing position. Thus, a walking mower characterized by supporting a battery cover on a swing arm . Engage the non-battery side of the upper cover with the traveling vehicle body so that the battery placement side of the upper cover swings up and down and the upper cover opens and closes. The walking mower according to claim 1 , wherein the opening / closing operation of the upper cover is fixed by being engaged with the cover. The battery cover is swingably supported by a swing arm, and an engagement recess is provided on one of the upper cover and the battery cover, and an engagement protrusion is provided on the other to engage and disengage with the engagement recess. , by closing the battery cover at a closed upper cover, the engaging protrusion by at least one of the elastic deformation of the upper cover and the battery cover according to claim 2, characterized in that to engage the engaging recess Walking type mower. A cutting blade that cuts grass on a traveling machine body supported so as to be able to travel by wheels, an electric motor that drives the cutting blade and the wheel, a battery for power supply arranged on one side of the traveling machine body, and the battery Is provided with a battery mounting member that is detachably loaded from the outer side in the front-rear direction, and a swing arm that is swingable up and down and that can be held at a position that swings upward,
A battery presser is provided on the swing arm to removably engage the battery at a position where the swing arm is swung upward to prevent the battery from being detached from the battery mounting member .
The walk type mower is characterized in that the swing arm is provided on both right and left sides of the traveling machine body, and the swing end side of the left and right swing arm is connected by a handle for lifting the travel machine body .

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