JP2009072149A - Horticultural tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a horticultural tool that excellently keeps a weight balance by adjusting the fixing position of a balance weight according to an operator's physique, kind of knife, operation conditions etc., without changing the effective length of a long bar and carries out an operation in good workability. <P>SOLUTION: In the cordless mower (horticultural tool) 1 including a rotary drive source (motor), the long bar 2 and an operation part (reaping knife 5) that is attached to one end of the long bar 2 and is operated by receiving a turning force from the rotary drive source, the balance weight 17 is arranged to be adjustable in position. For example, the balance weight 17 is attached to the long bag 2 movably along its axial direction. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a gardening tool such as a mower provided with a working unit that is attached to one end of a long bar and operates by receiving rotational force from a rotational drive source.

  2. Description of the Related Art Conventionally, an engine mower using an engine as a drive source has a gear box for housing a gear connected to one end of a long bar, and a cutting blade for cutting grass and branches at the lower end of a spindle accommodated in the gear box. The engine housing, which is connected and integrated with the fuel tank, is connected to the other end of the long bar, and the engine output is cut through the drive shaft in the long bar and the gear housed in the gear box. In general, the cutting blade is driven by rotation.

  In such an engine mower, the mass of the gear box or cutting blade connected to one end of the long bar and the engine housing connected to the other end of the long bar are relatively similar and are mounted between the two. While holding the operation handle, the weight balance is maintained so that the cutting blade is in an optimal position for cutting grass and branches.

  By the way, since an engine mower has problems such as exhaust gas and noise, a battery-type cordless mower has recently been used in place of the engine mower.

  However, in a battery-type cordless mower, for example, if a motor and a motor housing are attached to one end of a long bar instead of an engine housing, a weight balance can be obtained so that the cutting blade is in an optimum position. If it is attached to the other end, that is, the motor housing, the overall weight balance will be lost, and even if a battery is placed on the upper part of the cutting blade, even if the motor is placed in the gear box and the battery is placed on the other end, the cutting blade will be heavy. The overall weight balance was lost and the operability was poor.

  To solve the above problems, there are some that can change the length of the long bar, but changing the effective length will cause the weight balance to be lost and the operability to deteriorate, and an extra long bar must be stored. Therefore, there is a problem in terms of space and weight.

In addition, the battery can usually be mounted with changing the voltage capacity, and the weight balance is lost due to the voltage capacity and mass. For this reason, in patent document 1, while attaching the motor case which accommodated the electric motor in the end of a connecting rod (long bar), the battery case which accommodates a battery pack in the other end of a connecting rod (long bar) is attached. In the electric mower, the battery packs with different capacities can be selectively stored in the battery case, and the center of gravity of the small capacity battery pack is placed in the opposite direction from the motor case mounting side with respect to the center of gravity of the maximum capacity. Proposals for offsetting have been made.
Japanese Utility Model Publication No. 5-002621

  However, there are individual differences in the physique of the worker, and for example, the operation handle position is frequently changed depending on the physique of the worker. Moreover, there are various types and types of cutting tools, such as cutting saws and nylon cords, as well as cutting blades, and it is not easy to maintain a good weight balance because each has a different mass.

  Also, even in working conditions, when cutting grass on sloped surfaces such as banks, when working from the upper side of the bank, it is necessary to make the long bar face downward than when working on flat ground. When working from the beginning, it is necessary to work with the long bar facing upward, and it is not easy to operate in a place with a poor foothold while tilting the long bar with the operation handle.

  The electric mower proposed in Patent Document 1 is only compatible with battery packs, and the size of the battery case is matched to the maximum capacity battery pack, so when using a small capacity battery pack, Not only is the battery case large and wasteful in space, but no consideration is given to the type of cutting tool or the physique of the operator.

  The present invention has been made in view of the above problems, and the purpose of the present invention is to install a balance weight according to the physique of the operator, the type of cutting tool, the working conditions, etc. without changing the effective length of the long bar. An object of the present invention is to provide a gardening tool capable of maintaining a good weight balance by adjusting the position and performing work with good workability.

  In order to achieve the above object, a first aspect of the present invention is directed to a rotary drive source, a long bar, and a working unit that is attached to one end of the long bar and operates by receiving rotational force from the rotary drive source. A gardening tool provided with a balance weight is attached so that the position can be adjusted.

  The invention according to claim 2 is the invention according to claim 1, wherein the balance weight is the rotation drive source.

  According to a third aspect of the present invention, in the first aspect of the present invention, the balance weight is attached to the long bar so as to be movable along the axial direction thereof.

  The invention according to claim 4 is the invention according to claim 1, wherein a housing provided at one end of the long bar is movably attached to the long bar, and the balance weight is configured by the housing. Features.

  According to a fifth aspect of the present invention, in the first aspect of the invention, the balance weight is attached to a housing provided at one end of the long bar so that the position of the balance weight can be adjusted.

  The invention according to claim 6 is characterized in that, in the invention according to any one of claims 1 to 5, a handle is slidably attached to the long bar.

  The invention according to claim 7 is the invention according to any one of claims 1 to 6, wherein an illumination device is provided on the balance weight.

  The invention according to claim 8 is characterized in that, in the invention according to claim 7, the lighting device is attached to the balance weight so as to be tiltable.

  According to the first to fifth aspects of the present invention, the gardening can be performed without changing the effective length of the long bar by adjusting the mounting position of the balance weight according to the physique of the worker, the type of the cutting tool, the working conditions, and the like. The weight balance of the tool can be kept good, and the required work can be performed with good workability.

  According to the sixth aspect of the present invention, the weight balance of the garden tool can be kept good by adjusting the attachment position of the handle to the long bar together with the balance weight, and the adjustment range of the weight balance can be expanded. it can.

  According to the seventh aspect of the present invention, it is possible to efficiently perform work with good workability by illuminating the work site with the illumination device provided on the balance weight.

  According to the eighth aspect of the present invention, it is possible to appropriately and widely illuminate a necessary part by adjusting the mounting angle of the lighting device.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

<Embodiment 1>
1 is a side view of the cordless mower according to Embodiment 1 of the present invention, FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, and FIG. 3 is a view in the direction of arrow B in FIG.

  A cordless mower 1 shown in FIG. 1 includes a long bar 2, and a motor housing 3 is connected and fixed to a lower end portion of the cordless mower 1, and a motor and a spindle (not shown) are accommodated in the motor housing 3. Yes. Here, the rotation of the motor is transmitted to the spindle. A flange 4 is press-fitted and fixed to the spindle, and a disc-shaped cutting blade 5 is fixed to the lower end of the spindle by the flange 4 and a nut 6.

  A switch handle 7 is attached to the upper end of the long bar 2 with screws 8, and a battery case 9 is formed integrally with the switch handle 7. The switch handle 7 houses a switch 10 for turning on / off the motor, and the battery case 9 houses a battery 11 as a drive source. As shown in FIG. 2, the power cord 12 that connects the battery 11 and the motor is passed through the long bar 2.

  Further, an operation handle 113 is slidably fixed by a fixing screw 14 at a position near the battery case 9 in the longitudinal center of the long bar 2, and the operation handle 13 of the long bar 2 and the battery case 9 are fixed. A shoulder band 15 is attached by a mounting bracket 16 between them. A copper balance weight 17 is movably mounted between the mounting bracket 16 of the long bar 2 and the battery case 9.

  As shown in FIGS. 2 and 3, the balance weight 17 can be rotated by a pin 20 at each end of a wide upper clamp 18 and a narrow lower clamp 19 disposed at the center in the width direction of the upper clamp 18. Arc-shaped recesses 18a and 19a along the outer periphery of the long bar 2 are respectively formed at the other ends of the upper clamp 18 and the lower clamp 19 (see FIG. 2). These recesses 18a , 19a, the long bar 2 is sandwiched. Further, a bolt 21 is inserted in the longitudinal center portion of the upper clamp 18 and the lower clamp 19, and the balance weight 17 is attached to the long bar 2 by tightening a wing nut 22 that is screwed into an end portion of the bolt 21. It is attached. Then, the balance weight 17 is released by loosening the wing nut 22, the balance weight 17 is moved along the long bar 2, and then the wing nut 22 is tightened again so that the balance weight 17 is moved to the long bar 2. The position of the balance weight 17 can be arbitrarily adjusted by fixing it to the position.

  Next, operation | movement of the cordless mower 1 comprised as mentioned above is demonstrated.

  At the time of mowing, the operator hangs the shoulder band 15 on the shoulder, tilts the long bar 3 forward while lightly grasping the operation handle 13 and the switch handle 7, and lifts the cutting blade 5 from the ground (not shown) by several centimeters. Then, loosen the wing nut 22 with your finger so that the overall weight balance is maintained, and move the balance weight 17 along the long bar 2 to adjust its position. 22 is tightened to fix the balance weight 17 in that position.

  When the switch 10 is turned on and power is supplied from the battery to the motor (not shown) via the power cord 12 with the weight balance of the entire cordless mower 1 maintained in a good manner as described above, the motor is started. Then, the rotation is transmitted to a spindle (not shown), the spindle and the cutting blade 5 attached to the spindle are rotationally driven at a predetermined speed, and the grass and branches are cut by the cutting blade 5.

  As described above, in the present embodiment, the mounting position of the balance weight 17 can be adjusted according to the physique of the worker, the type of cutting tool, the working conditions, and the like, so the effective length of the long bar 2 is changed. Therefore, the weight balance of the cordless mower 1 can be kept good, and the required mowing work can be performed with good workability.

  Further, since the operation handle 13 is slidably attached to the long bar 2, the weight balance of the cordless mower 1 is kept good by adjusting the attachment position of the operation handle 13 to the long bar 2 together with the balance weight 17. And the range of adjustment of the weight balance can be expanded.

  The balance weight 17 can be attached to any position of the long bar 2, and a portion where the balance weight 17 can be attached may be provided anywhere on the cordless mower 1. For example, the balance weight 17 can be attached to the guard bar 7A of the switch handle 7.

<Embodiment 2>
Next, a second embodiment of the present invention will be described with reference to FIGS.

  4 is a cutaway side view of the upper end portion of the cordless mower according to Embodiment 2 of the present invention, FIG. 5 is a sectional view taken along the line CC of FIG. 4, and in this embodiment, the switch handle 7 and the battery case 9 are shown. And the battery case 9 is used as a balance weight, and the battery case 9 can be moved with respect to the switch handle 7.

  In the present embodiment, one end of the switch handle 7 is fixed to the upper end of the long bar 2 by a screw 8, and the other end of the switch handle 7 is formed in a cylindrical shape. The battery case 9 houses and fixes the battery 11, and a fitting portion 9A that fits loosely on the outer periphery of the end of the switch handle 7 is formed at the center of the shaft. A plastic ring-shaped stopper 23 is fitted on the inner periphery of the end of the fitting portion 9A of the battery case 9, and the stopper 23 restricts the axial movement of the battery case 9 relative to the switch handle 7. Yes.

  As shown in FIG. 5, the battery case 9 is formed with slit-shaped slits 9a that are long in the axial direction, and a pair of flanges 9B are formed radially outward on both sides of the slot 9a. Projected to Then, a screw 24 is passed through each of the flanges 9B, and the inner diameter of the battery case 9 is reduced by tightening the wing nut 25 screwed into the end of the screw 24. Fixed to the outer periphery of the end.

  By the way, the key groove 7a is formed at two opposite positions on the outer periphery of the end portion of the switch handle 7, and the axially long key groove is also formed at two opposite positions on the inner periphery of the fitting portion 9A of the battery case 9. 9b is formed, and a key 26 is driven into each key groove 7a, 9b forming a pair. As a result, the battery case 9 can move within a predetermined range in the axial direction while being restricted in rotation. The battery case 9 and the switch 10 of the switch handle 7 are electrically connected by a power line 27 that can be expanded and contracted.

  Thus, when the overall weight balance is lost during the mowing operation, the wing nut 25 is loosened with a finger, and the battery case 9 functioning as a balance weight is moved along the switch handle 7 in a direction in which the weight balance is improved. The position of the battery case 9 can be adjusted by tightening the wing nut 25 at a position where the weight balance is achieved.

  Therefore, also in the present embodiment, the attachment position of the battery case 9 can be adjusted according to the physique of the worker, the type of cutting tool, the working conditions, etc., so without changing the effective length of the long bar 2, The weight balance of the cordless mower 1 can be kept good, and the required mowing work can be performed with good workability.

<Embodiment 3>
Next, a third embodiment of the present invention will be described with reference to FIGS.

  6 is a side view of a cordless mower according to Embodiment 3 of the present invention, FIG. 7 is a cross-sectional view of a motor drive shaft, FIG. 8 is a cutaway side view of a motor case set, and FIG. It is line sectional drawing.

  As shown in FIG. 6, the cordless mower 1 according to the present embodiment has a gear case 28 fixed to the lower end of the long bar 2 and a motor case assembly that functions as a balance weight at the upper end of the long bar 2. 29 is attached. Here, although not shown, a gear and a spindle are rotatably accommodated in the gear box 28, the flange 4 is press-fitted and fixed to the spindle, and a disc-shaped cutting blade 5 is flanged to the lower end of the spindle. 4 and a nut 6.

  An adapter 30 is fixed to the upper end of the long bar 2 with a screw 31, and the motor case set 29 is attached to the adapter 30 so as to be movable in the axial direction. Here, as shown in FIG. 8, the motor case set 29 is configured by integrating a motor case 33 that houses a motor 32 and a battery box 34 that houses a battery (not shown).

  As shown in FIG. 6, a U-shaped switch operation handle 35 for gripping with both hands is fixed at a position near the motor case 33 side in the longitudinal center of the long bar 2, and the switch operation handle 35 is fixed. A mounting bracket 16 is fixed between the motor case 33 and a shoulder band 15 is attached to the mounting bracket 16. The switch operating handle 35 is equipped with a switch 10 for starting / stopping the motor 32.

  Further, as shown in FIG. 8, the long bar 2 is constituted by a pipe, and a drive shaft 36 is rotatably inserted therein. A socket 37 is attached to one end of the drive shaft 36, and an output shaft 32a of a motor 32 is connected to the socket 37 by insertion fitting. Here, the output shaft 32a of the motor 32 has a non-circular cross-sectional shape by forming a two-surface width as shown in FIG. A joint hole 37a is formed, and the output shaft 32a is inserted and fitted into the fitting hole 37a so that the output shaft 32a and the drive shaft 36 are connected to each other so as to be relatively movable in the axial direction. The rotation of the shaft 32 a is transmitted to the drive shaft 36 through the socket 37. Although not shown, the other end of the drive shaft 36 is connected to the spindle via a gear in the gear box 28.

  Here, as shown in FIG. 8, a ring-shaped flange 30A is integrally formed at the end of the adapter 30 on the motor case 33 side, and a spline 30a is engraved on the outer periphery of the flange 30A. Has been.

  Further, a fitting hole 33A is formed in the shaft center portion of the motor case 33 on the adapter 30 side, and a spline 33a is engraved on the inner periphery of the fitting hole 33A. Then, the fitting hole 33A of the motor case 33 is passed through one end of the adapter 30, and the spline 33a engraved on the inner periphery of the fitting is engaged with the spline 30a engraved on the flange portion 30A of the adapter 30 so that the motor The case set 29 is held so as to be movable in the axial direction within a predetermined range with respect to the adapter 30. Here, a stopper 38 is fitted to the end of the motor case 33, and this stopper 38 functions as a sliding guide and a retaining stopper for the motor case assembly 29.

  Furthermore, as shown in FIG. 9, the stopper 38 is formed with slit-shaped slits 38a that are long in the axial direction, and a pair of flanges 39 on both sides of the slits 38a are directed outward in the radial direction. Projecting together. A screw 40 is passed through each flange 39, and a wing nut 41 is screwed to the end of the screw 40. Therefore, the motor case assembly 29 can be fixed to the adapter 30 by tightening the wing nut 41 to reduce the inner diameter of the stopper 38.

  Thus, when mowing, the operator hangs the shoulder band 15 on the shoulder, gently grasps the operation handle 13 and the motor case assembly 29, and when the overall weight balance is lost, the operator pulls the wing nut 41 with a finger. Loosen and move the motor case set 29 functioning as a balance weight along the adapter 30 in a direction in which the weight balance is improved to adjust its position, and tighten the wing nut 41 at a position where the weight balance is achieved to tighten the motor case set 29 If the is fixed at that position, the weight balance of the cordless mower 1 can be kept good.

  Therefore, also in the present embodiment, the mounting position of the motor case assembly 29 can be adjusted according to the physique of the operator, the type of cutting tool, the working conditions, etc., so that the effective length of the long bar 2 is not changed. The weight balance of the cordless mower 1 can be kept good, and the required mowing work can be performed with good workability.

  In the present embodiment, since the moving mass of the motor case set 29 is large, only a small amount of movement is required for balancing, and it is possible to cope with a more inclined slope. Also in the present embodiment, the battery box 34 can be separated from the motor case set 29, and the battery box 34 can be moved to balance the weight.

<Embodiment 4>
Next, a fourth embodiment of the present invention will be described with reference to FIGS.

  10 is a side view of an attachment-type mower according to Embodiment 4 of the present invention, and FIG. 11 is a cross-sectional view taken along line EE of FIG.

  The attachment type mower 1 ′ shown in FIG. 10 is configured by detachably attaching a cutting blade attachment 44 to a tip of a shaft pipe 43 of the main operation unit 42 by a joint 45. The shaft pipe 43 and a case 46 fixed to the upper end of the shaft pipe 43 include a motor 46, a battery, and a speed reducer (not shown). Although not shown, a drive shaft is inserted into the shaft pipe 43, and one end (upper end) of the drive shaft is connected to a motor via a speed reducer (not shown). Is transmitted to the drive shaft through a speed reducer.

  As shown in FIG. 10, a main handle 47 is attached to the outer periphery of the intermediate portion in the longitudinal direction of the shaft pipe 43, and a switch 48 for starting / stopping the motor is attached to the main handle 47. ing. Further, an auxiliary handle 49 is detachably fixed in front of the main handle 47 of the shaft pipe 43, and a shoulder band 15 is attached between the auxiliary handle 49 and the main handle 47.

  On the other hand, the cutting blade attachment 44 includes a gear box 50, and a shaft pipe 51 is obliquely inserted into the gear box 50 from above and fixed. Although not shown, a driven shaft is inserted into the shaft pipe 51, and the driven shaft is connected to a spindle via a bevel gear housed in a gear box 50. A disc-shaped cutting blade 5 is bound.

  Thus, the attachment-type mower 1 ′ shown in FIG. 10 is constructed by mounting the cutting blade attachment 44 to the main operation portion 42 by the joint 45. At this time, the drive shaft and the cutting blade of the main operation portion 42 are simultaneously formed. The driven shaft of the attachment 44 is connected. In the attachment type mower 1 ′, the shaft pipes 43 and 51 connected by the joint 45 constitute a long bar.

  Thus, in the attachment type mower 1 ′ according to the present embodiment, the balance weight 17 similar to that of the first embodiment is attached between the main handle 47 of the shaft pipe 43 and the case 46 so that the position can be adjusted. It has been. Since the configuration and mounting structure of the balance weight 17 are the same as those in the first embodiment, the same reference numerals are given to the same elements as those shown in FIG. 2 in FIG. The description will not be repeated.

  Therefore, when mowing using the attachment-type mower 1 ′ according to the present embodiment, the operator hangs the shoulder band 15 on his / her shoulder, holds the main handle 47 and the auxiliary handle 49, and the overall weight balance is lost. If the wing nut 22 is loosened with a finger, the balance weight 17 is moved along the shaft pipe 43 in a direction in which the weight balance is improved, and the position is adjusted. Tighten and fix the balance weight 17 in that position.

  After the weight balance of the attachment type mower 1 ′ is adjusted well as described above, when the switch 48 provided on the main handle 47 is turned ON, the motor is supplied with power from the battery built in the case 46. The rotation is decelerated by the speed reducer and transmitted to the drive shaft. The rotation of the drive shaft is transmitted to the driven shaft of the cutting blade attachment 44, and the driven shaft is rotationally driven at a predetermined rotational speed. The Then, the rotation of the driven shaft is changed in direction by a bevel gear built in the gear box 50 and transmitted to the spindle, and the spindle and the cutting blade 5 bonded thereto are rotationally driven at a predetermined speed. Grass and branches are cut by the rotating cutting blade 5.

  Thus, also in this embodiment, the attachment position of the balance weight 17 can be adjusted according to the physique of the operator, the type of cutting tool, the working conditions, etc., so the weight balance of the attachment type mower 1 ′ can be adjusted. It can be kept good, and the required mowing work can be performed with good workability.

  Note that the attachment position of the balance weight 17 is not limited to this embodiment, and is arbitrary as long as attachment is possible. For example, as shown in FIG. 12, a configuration in which a clamp bar 52 is attached to the case 46 and the balance weight 17 is attached to the clamp bar 52 may be employed.

  Further, as shown in FIGS. 13 and 14, an illumination device 53 can be provided on the balance weight 17.

  13 is a cross-sectional view of the balance weight provided with the illumination device, FIG. 14 is a cross-sectional view taken along the line FF of FIG. 13, and the balance weight 17 includes the wide upper clamp 18 and the width direction of the upper clamp 18. Each end of the narrow lower clamp 19 arranged in the center is rotatably connected by a pin 20, and the other ends of the upper clamp 18 and the lower clamp 19 are along the outer circumference of the long bar 2. Arc-shaped recesses are formed, and the long bar 2 is sandwiched between these recesses. Further, a bolt 21 is inserted in the longitudinal center portion of the upper clamp 18 and the lower clamp 19, and the balance weight 17 is attached to the long bar 2 by tightening a wing nut 22 that is screwed into an end portion of the bolt 21. It is attached. Then, the balance weight 17 is released by loosening the wing nut 22, the balance weight 17 is moved along the long bar 2, and then the wing nut 22 is tightened again so that the balance weight 17 is moved to the long bar 2. The position of the balance weight 17 can be arbitrarily adjusted by fixing it to the position.

  Thus, as shown in FIG. 13, the lower clamp 19 is integrally provided with a round shaft 19A, and a ball 19B is integrally formed at the end of the round shaft 19A. The ball 19B is attached with an illumination device 53, which is composed of a wide upper cover 55 and a narrow lower cover 56 whose ends are coupled to each other by a connecting pin 54, so that the ball 19B can tilt. On the opposite side of the connecting pin 54 of the upper cover 55 of the lighting device 53, there is provided a light storage part 57 for storing a light and a light battery (not shown). A switch 58 for turning off / off and a light lens 59 are provided. The upper cover 55 and the lower cover 56 have tapered surfaces 55b and 56b that allow the hemispherical recesses 55a and 56a (see FIG. 14) along the outer peripheral surface of the ball 19B and the illumination device 53 to tilt around the ball 19B. (See FIG. 13).

  As shown in FIG. 14, a bolt 60 is inserted through the upper cover 55 and the lower cover 56 of the lighting device 53, and a wing nut 61 is screwed into the end of the bolt 60. Therefore, if the wing nut 61 is loosened, the lighting device 53 can be tilted about the ball 19B to adjust the mounting angle of the lighting position 53. After the adjustment, the lighting device 53 is fixed by tightening the wing nut 61. be able to.

  When the lighting device 53 is provided on the balance weight 17 in this way, the lighting device 53 can irradiate the work site with light so that mowing work can be performed with good workability, and the angle of the lighting device 53 is adjusted. Appropriate locations can be illuminated over a wide area.

  Although the present invention has been described with respect to a mode in which the present invention is applied to a cordless mower using a motor as a drive source, the present invention is not limited to application to a mower. The present invention can be similarly applied not only to other arbitrary garden tools such as clippers, but also to garden tools using an engine as a driving source, garden tools with cords, and the like.

It is a side view of the cordless mower according to Embodiment 1 of the present invention. It is the sectional view on the AA line of FIG. It is a figure of the arrow B direction of FIG. It is a fracture | rupture side view of the upper end part of the cordless mower which concerns on Embodiment 2 of this invention. It is CC sectional view taken on the line of FIG. It is a side view of the cordless mower which concerns on Embodiment 3 of this invention. It is a cross-sectional view of the motor drive shaft of the cordless mower according to Embodiment 3 of the present invention. It is a fracture side view of the motor case set of the cordless mower according to Embodiment 3 of the present invention. It is the DD sectional view taken on the line of FIG. It is a side view of the attachment-type mower based on Embodiment 4 of this invention. It is the EE sectional view taken on the line of FIG. It is a partial side view which shows the example of attachment of a balance weight. It is sectional drawing of the balance weight provided with the illuminating device. It is the FF sectional view taken on the line of FIG.

Explanation of symbols

1 Cordless mower (garden tools)
1 'Attachment mower (gardening tool)
2 Long bar 3 Motor housing 4 Flange 5 Cutting blade 6 Nut 7 Switch handle 7A Switch handle guard bar 7a Switch handle keyway 8 Screw 9 Battery case 9A Battery case fitting portion 9B Battery case flange 9a Battery case flange Slot 9b Battery case keyway 10 Switch 11 Battery 12 Power cord 13 Operation handle 14 Fixing screw 15 Shoulder band 16 Mounting bracket 17 Balance weight 18 Upper clamp 18a Upper clamp recess 19 Lower clamp 19A Lower clamp round shaft 19B Lower Clamp ball 19a Lower clamp recess 20 Pin 21 Bolt 22 Wing nut 23 Stopper 24 Screw 25 Wing nut 26 Key 27 Power line 28 Gear box 29 Motor case assembly 30 Adapter 0A Adapter flange 30a Spline of flange 31 Screw 32 Motor 32a Motor output shaft 33 Motor case 33A Motor case fitting hole 33a Mating hole spline 34 Battery box 35 Switch operation handle 36 Drive shaft 37 Socket 37a Socket fitting Joint hole 38 Stopper 38a Slot groove of stopper 39 Flange 40 Screw 41 Wing nut 42 Main operation part 43 Shaft pipe (long bar)
44 Cutting blade attachment 45 Joint 46 Case 47 Main handle 48 Switch 49 Auxiliary handle 50 Gear box 51 Shaft pipe (long bar)
52 Clamp Bar 53 Illumination Device 54 Connecting Pin 55 Upper Cover 55a Upper Cover Hemispherical Recess 55b Upper Cover Tapered Surface 56 Lower Cover 56a Lower Cover Hemispherical Recess 56b Lower Cover Tapered Surface 57 Light Storage Unit 58 Switch 59 Light Lens 60 bolt 61 wing nut

Claims (8)

In a gardening tool comprising a rotary drive source, a long bar, and a working unit that is attached to one end of the long bar and operates by receiving a rotational force from the rotary drive source,
A gardening tool that features a balance weight that can be adjusted.   The garden tool according to claim 1, wherein the balance weight is the rotation drive source.   The garden tool according to claim 1, wherein the balance weight is attached to the long bar so as to be movable along an axial direction thereof.   The garden tool according to claim 1, wherein a housing provided at one end of the long bar is movably attached to the long bar, and the balance weight is constituted by the housing.   2. The garden tool according to claim 1, wherein the balance weight is attached to a housing provided at one end of the long bar so that the position of the balance weight can be adjusted.   The garden tool according to any one of claims 1 to 5, wherein a handle is slidably attached to the long bar.   The gardening tool according to claim 1, wherein a lighting device is provided on the balance weight.   The gardening tool according to claim 7, wherein the lighting device is attached to the balance weight so as to be tiltable.

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