JP2008017852A - Hand-held type lawn mower - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable receiving chips of grass and trees, mowed with a clipper, on the clipper. <P>SOLUTION: A receiver (5) receiving chips yielded by mowing with a comb-like cutting blade (2) is formed on a housing (1), wherein the receiver can be vertically changed its attaching position to the housing. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a handheld lawn mower equipped with a receiver for receiving chips.

Background Art and Problems to be Solved by the Invention

  JP-A-2000-83475 discloses a hand-held lawn mower that cuts vegetation by reciprocating angular movements of comb-shaped cutting blades that are vertically overlapped with each other. When cutting the vegetation, the chips fall as they are, making cleaning later difficult.

  In addition, the hand-held lawn mower disclosed in Japanese Utility Model Publication No. Hei 3-74227 is designed to mow vegetation by reciprocating linearly reciprocatingly moving comb-shaped cutting blades that overlap each other vertically. It is equipped with a chip collecting member that is disposed along, but this collecting member is fixed to the plate-shaped presser plate of the cutting blade with bolts and nuts. It interferes with the cleaning work of the lawn mower.

JP 2000-83475 A Japanese Utility Model Publication 3-74227

  In order to solve the above-mentioned problems, the invention of claim 1 is a hand-held lawn mower provided with a comb-shaped cutting blade (2) in front of the housing (1) and performing cutting by reciprocating angular movement of the cutting blade to the left and right. A receiver (5) for receiving chips generated by cutting with the cutting blade, the receiver having a bottom plate (6), and the mounting position of the receiver can be changed vertically. It is provided in.

  According to a second aspect of the present invention, in the handheld lawn mower according to the first aspect, the bottom plate is arranged from the lower part of the cutting blade to the housing.

  According to a third aspect of the present invention, in the handheld lawn mower according to the first or second aspect, the receiver is detachably attached to the housing via attachment / detachment means (14, 15), and The mounting position with respect to the housing is provided so as to be changeable in the vertical direction via the attaching / detaching means.

  According to the present invention, since the mounting position of the receiver can be changed in the vertical direction, the trimming height of turfgrass or the like can be adjusted.

  Further, by performing the pruning operation while receiving the chips by the receiver, the subsequent cleaning of the chips and the like becomes unnecessary.

  Furthermore, since the receiver can change its attachment position in the vertical direction by the attaching / detaching means, the height of trimming turfgrass or the like can be adjusted more easily.

  Next, embodiments of the present invention will be described with reference to the drawings.

<Embodiment 1>
As shown in FIGS. 1 to 4, the handheld lawn mower includes a housing 1 and a cutting blade 2 projecting forward from the housing 1.

  The housing 1 is formed, for example, by combining left and right split molds. A handle 3 is integrally provided at the rear portion of the housing 1. An ON / OFF switch trigger 4 is provided inside the handle 3. Although not shown in the figure, a driving part, a transmission part and the like are accommodated in the housing 1. For example, a motor is used as the driving part, and a cam device is used as the transmission part. By operating the trigger 4 with the finger of the hand having the handle 3 and switching the ON / OFF switch ON / OFF, the motor is started or stopped.

  The cutting blade 2 is configured by overlapping a comb-shaped lower blade 2b in the same manner as the comb-shaped upper blade 2a and connecting them with a pivot pin (not shown). When the upper and lower blades 2a and 2b reciprocate left and right with the pivot pin as a fulcrum, the comb-shaped teeth repeatedly intersect to cut the plant. Although not shown, elongated holes are formed in the rear portions of the upper and lower blades 2a and 2b, respectively, and the upper and lower cams of the cam device are fitted in the elongated holes. The upper and lower cams are integrated so that the phase is shifted by 180 degrees. When the cam rotates by starting the motor of the prime mover, the upper and lower blades 2a, 2b perform reciprocal angular motions in opposite directions to cut a plant that enters between the comb teeth.

  The receiver 5 shown in FIGS. 5 and 6 is detachably attached to the housing 1 as shown in FIGS.

  The receiver 5 is a collecting tool for receiving chips generated by cutting by the comb-shaped cutting blade 2, and as shown in FIGS. 5 and 6, a bottom plate 6 extending in the left-right direction of the handheld lawn mower, and a bottom plate 6 and a back plate 7 that rises obliquely rearward from the rear part. The receiver 5 is desirably integrally formed by, for example, resin injection molding, metal plate press molding, or the like. A substantially U-shaped notch 8 into which the front portion of the housing 1 is fitted is formed at the center of the bottom plate 6 and the back plate 7. As shown in FIGS. 1 to 4, when the receiver 5 is attached to the housing 1, a collecting portion that receives chips is formed between the bottom plate 6, the back plate 7, and the housing 1. The front end 6a of the bottom plate 6 is retreated slightly toward the housing 1 from the comb-like teeth of the cutting blade 2 so as not to hinder the cutting operation.

  In this embodiment, the receiver 5 is detachably attached to the housing 1 through the following attachment / detachment means.

  That is, as shown in FIGS. 5 and 6, a pair of recesses 9 are formed at locations facing the notches 8 of the back plate 7, and as shown in FIGS. 9 is formed. The convex portion 10 is formed as a round shaft that projects horizontally from the left and right side surfaces of the housing 1, and the concave portion 9 is formed as a round hole into which the round shaft that is each convex portion 10 enters. An opening 9 a is formed in the lower portion of the round hole, which is the concave portion 9, through which the convex portion 10 passes when the receiver 5 is attached to and detached from the housing 1. As shown in FIGS. 1 to 4, the receiver 5 is attached to the housing 1 so as not to move in the front-rear direction by fitting the concave and convex portions 9 and 10. Further, as shown in FIGS. 5 and 6, the locking piece 11 protrudes in a tongue shape from the rear edge of the bottom plate 6 of the receiver 5 into the notch 8. As shown in FIGS. 2 to 4, when the locking piece 11 contacts the bottom surface 1 a of the housing 1 with elastic deformation, the receiver 5 does not rotate up and down around the concavo-convex portions 9 and 10. 1 is fixed.

  The receiver 5 may be formed so as to protrude further outward than the left and right edges of the cutting blade 2, but preferably the left and right edges 5a and 5b are cut as shown in FIGS. It is formed so as to correspond to the left and right sides of the blade 2. In this case as well, the left and right edges 5a and 5b of the receiver 5 slightly protrude from the left and right sides of the cutting blade 2, but the amount of protrusion is, for example, about several millimeters. When cutting turf grass or the like, if the left and right edges 5a and 5b of the receiver 5 are used as a guide and are slid along a block rod or the like (not shown), the cutting operation is made efficient.

  Next, the operation of this handheld lawn mower will be described.

  First, the receiver 5 is brought close to the housing 1 from below the cutting blade 2 so that the locking piece 11 is brought into contact with the bottom surface 1a of the housing 1, and then the receiver 5 is slid rearward so that the concave portion 9 of the receiver 5 protrudes from the convex portion of the housing 1. It is made to oppose the part 10. Therefore, the convex portion 10 is fitted into the concave portion 9 by bending the receiver 5 or the locking piece 11.

  As shown in FIGS. 1 to 4, the receiver 5 is formed by fitting the concave and convex portions 9 and 10, locking the locking piece 11 to the housing bottom surface 1 a, inserting the housing 1 into the notch 8, and the like. Fixed to.

  Therefore, when the handle 3 of the hand-held lawn mower is held and the trigger 4 is pulled, the motor is activated, and the upper and lower blades 2a and 2b of the cutting blade 2 perform a reciprocating angular motion to the left and right. By applying the cutting blade 2 to the plant, the plant is trimmed.

  Chips generated by trimming are received in a space between the bottom plate 6 and the back plate 7 of the receiver 5 without falling under the handheld lawn mower and are accumulated on the receiver 5.

  In order to remove the receiver 5 from the housing 1, the receiver 5 and the locking piece 11 are elastically deformed so as to push up the receiver 5, and the uneven portions 9 and 10 are separated. Subsequently, the receiver 5 is slid forward of the housing 1, and the locking piece 11 is detached from the bottom surface 1 a of the housing 1.

  Thereby, the receiver 5 is removed from the handheld lawn mower, and the receiver 5 and the handheld lawn mower are each subjected to cleaning or the like.

<Embodiment 2>
As shown in FIGS. 7 to 9, in the second embodiment, unlike the first embodiment, the concave and convex portions 9 and 10 formed on the receiver 5 and the housing 1 are formed by square holes and square axes, respectively. The Specifically, the convex portion 10 is formed as a plate piece, and the concave portion 9 is formed as a rectangular hole into which the plate piece is fitted.

  When the concave and convex portions 9 and 10 are formed by square holes and square axes in this way, the receiver 5 becomes difficult to rotate in the vertical direction, so the locking piece 11 can be omitted.

  In the second embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

<Embodiment 3>
As shown in FIGS. 10 to 12, in the third embodiment, unlike the first and second embodiments, the concave portions 9 for attaching the receiver 5 to the housing 1 are provided on the left and right side surfaces of the housing 1. The protrusion 10 is formed at a location facing the notch 8 of the receiver 5.

  The uneven portions 9 and 10 can be round holes and round shafts as in the first embodiment. The locking piece 11 can be provided as necessary.

  In addition, in this Embodiment 3, the same code | symbol is attached | subjected and shown to the part same as the part in Embodiment 1 or Embodiment 2, and the detailed description is abbreviate | omitted.

<Embodiment 4>
As shown in FIGS. 13 and 14, in the fourth embodiment, unlike the first to third embodiments, the bottom plate portion 1b of the housing 1 is formed detachably with respect to the housing body, and the receiver 5 is formed integrally with the bottom plate portion 1 b of the housing 1. In order to attach / detach the bottom plate portion 1b of the housing 1 to / from the housing body, fitting pieces 12 and spring pieces 13 are provided on the left and right edges and the rear edge of the bottom plate portion 1b, respectively.

  At the same time that the bottom plate portion 1 b of the housing 1 is fitted into the housing body, the receiver 5 is mounted on the housing 1. At the same time that the bottom plate portion 1 b of the housing 1 is removed from the housing body, the receiver 5 is removed from the housing 1.

  In the fourth embodiment, the same parts as those in the first to third embodiments are denoted by the same reference numerals, and detailed description thereof is omitted.

<Embodiment 5>
As shown in FIGS. 15 and 16, in the fifth embodiment, the receiver 5 is detachably attached to the housing 1 through attachment / detachment means different from those in the first to fourth embodiments.

  That is, the mounting plate 14 protrudes rearward along the left and right side surfaces of the housing 1 from the left and right sides facing the notch 8 of the back plate 7, and these mounting plates 14 are attached to the side surface of the housing 1 with mounting screws 15. Fixed. The mounting screw 15 is formed by fixing a knob to a screw rod (not shown), and the screw rod passes through the mounting plate 14 and is screwed into a screw hole (not shown) formed on the side surface of the housing 1. When the mounting screw 15 is tightened, the receiver 5 is fixed to the housing 1 via the mounting plate 14, and when the mounting screw 15 is loosened, the receiver 5 is removed from the housing 1.

  In the case of the fifth embodiment, for example, by turning the receiver 5 around the mounting screw 15 as a fulcrum and changing the mounting angle of the receiver 5, the trimming height of turf grass or the like is adjusted. It is also possible. Further, in the case of the fifth embodiment, when the through hole of the mounting screw 15 formed in the mounting plate 14 is formed in a vertically long hole, and the mounting position of the receiver 5 is formed so that the position can be changed vertically, The cutting height of turfgrass etc. can be adjusted more easily.

  In the fifth embodiment, the same parts as those in the first to fourth embodiments are denoted by the same reference numerals, and detailed description thereof is omitted.

<Embodiment 6>
As shown in FIGS. 17 and 18, in the sixth embodiment, the receiver 5 is detachably attached to the housing 1 through attachment / detachment means different from those in the first to fifth embodiments.

  That is, the locking piece 11 protruding in a tongue shape from the rear edge of the bottom plate 6 of the receiver 5 into the notch 8 is fixed to the bottom surface 1 a of the housing 1 by the mounting screw 16. The receiver 5 is fixed to the housing 1 by tightening the mounting screw 16, and the receiver 5 is removed from the housing 1 by loosening the mounting screw 16.

  In the sixth embodiment, the same parts as those in the first to fifth embodiments are denoted by the same reference numerals, and detailed description thereof is omitted.

  In addition, in each said embodiment, the receiver 5 can also be integrally formed with the housing 1 of a hand-held lawn mower from the beginning of shaping | molding.

It is a top view of the handheld lawn mower which concerns on Embodiment 1 of this invention. It is a front view of the handheld lawn mower shown in FIG. It is a bottom view of the handheld lawn mower shown in FIG. It is a left view of the handheld lawn mower shown in FIG. It is a top view of the receiver removed from the hand-held lawn mower shown in FIG. FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. 5. It is a fragmentary figure which shows the principal part of the handheld lawn mower which concerns on Embodiment 2 of this invention. It is a top view of the receiver shown in FIG. FIG. 9 is a cross-sectional view taken along line IX-IX in FIG. 8. It is a fragmentary figure which shows the principal part of the handheld lawn mower which concerns on Embodiment 3 of this invention. It is a top view of the receiver shown in FIG. FIG. 12 is a cross-sectional view taken along line XII-XII in FIG. 11. It is a bottom view of the receiver used with the handheld lawn mower which concerns on Embodiment 4 of this invention. FIG. 14 is a cross-sectional view taken along line XIV-XIV in FIG. 13. It is a bottom view of the hand-held lawn mower which concerns on Embodiment 5 of this invention. It is a front view of the handheld lawn mower shown in FIG. It is a bottom view of the hand-held lawn mower which concerns on Embodiment 6 of this invention. FIG. 18 is a cross-sectional view taken along line XVIII-XVIII in FIG. 17.

Explanation of symbols

2 ... Cutting blade 5 ... Receiver 5a, 5b ... Left and right edges

Claims (3)

A hand-held lawn mower equipped with a comb-shaped cutting blade in the front of the housing, and trimmed by reciprocating angular movement of the cutting blade to the left and right,
A receiver for receiving chips generated by cutting with the cutting blade;
The receiver has a bottom plate and is provided so that its mounting position can be changed in the vertical direction with respect to the housing.   The hand-held lawn mower according to claim 1, wherein the bottom plate is disposed from a lower part of the cutting blade to the housing.   2. The receiver is detachably attached to the housing via attachment / detachment means, and the attachment position with respect to the housing is provided so as to be vertically changeable via the attachment / detachment means. The handheld lawn mower according to 2 or 2.

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