JP2009045059A - Hand held trimmer and protection member for hand held trimmer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hand held trimmer capable of collecting trimmed plants generated, when trimming plants, such as, garden trees and grass, without requiring special devices or needless work and enhancing safety in trimming plants, and also a high-safety hand held trimmer capable of trimming by capturing thatch generated especially by mowing, of maintaining proper growth of grass, with efficient lawn mowing work and of inhibiting and preventing careless cutting of a power cord of the hand held trimmer, or the like. <P>SOLUTION: The hand held trimmer 10 has a trimmer body 2, trimming means 4 and a flat protective member 1. In the hand held trimmer, the trimming means 4 is located in front of the trimmer body 2, and the flat protection member 1 is located further in front of and above the trimming means 4. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a hand-held trimming machine and a protection member for a hand-held trimming machine that are preferably used for trimming vegetation.

  A hand-held trimming machine equipped with a rotary or sliding blade in front of a trimming machine main body equipped with power such as a motor is used for trimming grass and plants. Such a hand-held trimming machine can be held with one hand and perform trimming work, and can be operated even in a narrow place or a complicated place. On the other hand, the conventional handheld trimming machine does not have a collection mechanism for collecting the trimmed vegetation, and the trimmed vegetation is scattered as it is, and it is necessary to remove the trimmed scraps after trimming.

  In particular, cumbersome work is compelled in lawn mowing. This is because lawn mowing waste (generally called “Satch”) is entangled with the remaining lawn, and it is difficult to separate and remove only the mowing waste. Moreover, if this satch is left unattended, it may hinder turf growth, and the turf in the part where the satch is left may wither. In view of collecting such grass clippings and the like, there has been proposed one in which a saucer is provided below or behind a blade of a hand-held trimming machine (see Patent Document 1).

  Further, as described above, the hand-held trimming machine can be held with one hand and perform the trimming work. Therefore, it is easy to move the main body and excels in handling. However, on the other hand, it is necessary to pay careful attention not to cut the vegetation or other parts that are not intended. By the way, a hand-held electric hair clipper in which a frame in which a steel wire is bent is attached to a laterally lower part or a laterally upper part of a cutting blade is disclosed (see Patent Document 2). Thereby, the trimming length of the turf can be mainly adjusted, and it is considered that the object directly above and below the trimming blade is less likely to enter the trimming blade portion.

JP 2004-41140 A JP 2002-335761 A

  INDUSTRIAL APPLICABILITY The present invention can collect the cut vegetation that is produced when cutting vegetation such as garden trees and turf, without requiring any special equipment or extra work, and safety when cutting vegetation. An object is to provide a hand-held trimming machine capable of increasing the height. In particular, it can be harvested while collecting the hatches that are produced by lawn mowing, achieve efficient lawn mowing and good lawn growth, and inadvertently cut the power cord of the hand-held mower etc. The purpose is to provide a highly safe hand-held trimming machine that can suppress or prevent such a situation.

  The above-described problem is a handheld trimming machine having a trimming machine main body, a trimming means, and a plate-shaped protection member, wherein the trimming means is in front of the trimming machine main body, and the plate-shaped protection member is disposed on the trimming means. Furthermore, it has been achieved by a hand-held mower in the forward and upper position. In addition, the above-described problem is a plate-shaped protection member used for a hand-held trimming machine having a trimming unit in front of the trimming machine body, and the plate-shaped protection member is further forward and above the trimming unit. Achieved by a protective member for a hand-held mower placed in position.

  The hand-held trimming machine of the present invention can collect the harvested vegetation when cutting the vegetation such as garden trees and turf without requiring any special equipment or extra work, and when cutting the vegetation. There is an excellent effect that safety is enhanced. In addition, the hand-held trimming machine of the present invention can perform mowing while efficiently collecting the satch that is produced especially when mowing the lawn, and realizes good growth of the lawn together with efficient lawn mowing work, In addition, it has a high level of safety that can suppress and prevent accidental disconnection of the power cord of the hand-held trimming machine.

  Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a side view schematically showing an embodiment of the hand-held trimming machine of the present invention, and FIG. 2 is a plan view thereof.

  A hand-held trimming machine 10 according to the present embodiment includes a trimming machine main body 2, a trimming means 4, and a plate-like protection member 1. The main body of the trimming machine is provided with a motor (not shown), whereby the upper blade 4a and the lower blade 4b are rotated at a constant swing angle so that they slide relative to each other. The upper blade 4a and the lower blade 4b constitute the trimming means 4, and the vegetation can be trimmed by sliding of both the blades. At this time, electric power for moving the motor is sent to the main body 2 through the power cord 7. The trimming means 4 may be a sliding type as in this embodiment, or may be a rotary blade, for example. The material and structure of the trimming means 4, the drive mechanism by the motor, the form of attachment to the main body, etc. may be the materials or forms normally used for this type of handheld trimming machine.

  A grip hole 6 is provided in the trimming machine main body 2. Usually, four fingers other than the thumb are inserted into the hole 6 and the thumb is attached to the upper part of the main body of the trimming machine. In this way, the trimming machine main body is gripped by the palm above the gripping hole 6. And the start switch 5 is provided in the part where an index finger is arranged, and it can be pushed in, the said motor is started, and the trimming work can be performed. At this time, a safety switch (not shown) may be further provided at a position where it can be pushed with the thumb so that a safer trimming operation can be performed.

  In the hand-held trimming machine 10 of this embodiment, the saucer 3 is further provided. The tray 3 has a fitting recess 3c for installation in the main body, and is fitted to the main body side fitting projection 2a and attached to the main body. Further, in the present embodiment, the tray 3 has a lower support portion 3 a that is fixedly attached to the main body 2. However, the tray 3 can be removed, and can be attached or detached together with the protective member 1 without special equipment or complicated work as necessary. The bottom part 3b of the receiving tray 3 is substantially planar, and can collect the cutting waste generated in the cutting operation of the vegetation. However, in the present invention, as will be described later, the trimming means 4 forms the bottom of the collection region 8 formed by the protective member 1, and the trimmed waste can be collected. Therefore, although there is no need for the tray 3 or the bottom 3b, it is preferable that the tray 3 is provided in that the cutting waste that spills rearward can be accurately collected. Any material may be used for the tray 3, and a plastic material can be used in view of moldability or light weight.

  In the trimming machine 10 of this embodiment, the trimming means 4 is provided in front of the trimming machine main body 2, and the plate-shaped protection member 1 is further provided in front of the trimming means 4 and in an upper position. . Here, the front of the trimming machine refers to the direction in which the trimming machine is moved in the trimming operation (x direction, see FIG. 1). More specifically, in the present invention, the plate-like protective member 1 is preferably provided at least in front of the trimming means 4 (in the x direction) (refer to the front part f of the protective member, see FIG. 2). Is more preferably extended to the side of the trimming means (protective member side portion e, see FIG. 2). More specifically, when the protective member 1 is above the trimming means 4 (y direction), the front lower edge 11a of the protective member 1 is more than the trimming surface 12 on which the trimming means 4 trims the vegetation. It means being above (usually in the direction opposite to the ground 13 in lawn mowing). In addition, regarding the lower edge 11 of the protective member 1, a portion corresponding to the front portion f is referred to as a front lower edge 11a, and a portion corresponding to the side portion e is referred to as a side lower edge 11b, which may be distinguished from each other.

  Thus, when the plate-shaped protection member 1 is in front of and above the trimming means 4, for example, when the trimming machine 10 is moved forward (in the x direction) and trimming is performed, there is an obstacle other than a plant. First, the protective member 1 hits the obstacle and can suppress / prevent entry to the trimming means 4. For example, the power cord 7 of the trimming machine may be 5 m or 10 m long so as to reach the work area. Then, there is a case where the cord 7 comes to the front of the trimming machine. Even in such a case, if the protective member 1 hits the cord 7, the cutting means 4 prevents inadvertent cutting. be able to. Especially for the power cord 7 that is deformed flexibly and cannot be prevented by, for example, a linear protective member, the present invention particularly employs a plate-shaped protective member, so that it is inadvertently cut. Can be prevented more reliably. In addition, the same protective effect is exerted on the cords of garden equipment other than the cord 7 of the trimming machine, the garden trees, the body of an operator or another person (such as fingers).

  Further, as will be described later, the cutting waste collected in the collection region 8 is not often scattered as individual waste due to its entanglement, and therefore, there is only a protective member front portion f. That is, the trimming means 4 itself forms the bottom of the collection region 8 and the trimming waste is stacked above it, so that the protective member side portion e is not necessary. However, it is preferable that the protective member side portion e is provided in order to prevent the cutting scraps from collapsing down to the side of the cutting means 4 when more cutting scraps are collected and stacked.

  And it is preferable that the plate-shaped protection member 1 makes a wall with respect to the cutting surface 12 which the cutting means 4 cuts a plant like this embodiment. It means that the structure is standing like a wall that is slanted or perpendicular to the basal plane, and usually stands in the range of about 60-120 ° with respect to the basal plane, 70-110 ° It is preferable that it is, and it is more preferable that it is 80-100 degrees.). By setting it as the plate-shaped protection member which makes such a wall, a cutting waste can be effectively collected inside this with the above-mentioned protective effect. At this time, in order to collect a larger amount of cutting waste, that is, to increase the capacity of the collection area 8, it may be spread as it goes above the plate-like protective member. You may make it narrow as it goes upwards so that it may not fall out. Further, the plate shape is not limited to a flat plate shape as illustrated, and may have a predetermined bent portion or a curved portion. Furthermore, it may be a wire net formed by knitting a metal wire or a combination of long metal plates. The protective member 1 may be made of any material, and examples thereof include a metal plate such as an aluminum plate, a resin plate such as plastic and carbon fiber, and the like. The height w of the protective member is not particularly limited. However, in consideration of handleability and the amount of collected turf mowing, it is preferably 10 to 200 mm, more preferably 20 to 120 mm, and 40 to 40 mm. It is especially preferable to set it as 100 mm.

  The length of the protective member (the total length of the front part f and the side part e) is not particularly limited, and may be determined according to the size of the cutting means 4. For example, the length of the protective member 1 and the cutting means 4 It is preferable to arrange | position with the length which the space | interval v (FIG. 2) in planar view ensures about 3-30 mm, and it is more preferable to arrange | position so that 5-20 mm may be ensured. Specifically, although depending on the size of the trimming means, the length of the protective member front part f is 100 to 300 mm, and the side part e is 50 to 200 mm.

  In the trimming machine 10 of the present embodiment, the protection member 1 is fixed to the tray 3 with a fixture (screw and nut) 9. At this time, if the saucer 3 is detachable from the main body 2 as in this embodiment, the protection member 1 can be removed together with the saucer 3 as necessary. By adopting such a detachable aspect, for example, in the narrow space that cannot be trimmed due to interference of the protective member 1 or in the trimming of the corner of the garden, there is an advantage that the protective member 1 can be appropriately removed and operated. is there. Note that the tray 3 may not be provided, and the protection member may be directly attached to the main body. Further, the protective member 1 may be removable.

  In the trimming machine 10 of the present embodiment, a gap t is provided between the trimming surface 12 on which the trimming means 4 trims the vegetation and the front lower edge 11a of the protection member 1. The gap t need only be provided in accordance with the length of cutting of the vegetation. For example, the gap t should be increased when cutting longer (larger), and the gap t should be decreased when cutting shorter (smaller). That's fine. Further, it may be determined in relation to the above interval v. As will be described in detail later on the lawn pruning, the vegetation is taken in through the gap t, reaches the pruning means 4, and the vegetation is cut off at the pruning surface 12. The gap t is not particularly limited, but is preferably 0.5 to 20 mm, more preferably 1 to 12 mm, and particularly preferably 3 to 10 mm in mowing grass.

FIG. 3 is a side view schematically showing an enlarged periphery of the protective member in another preferred embodiment of the handheld trimming machine of the present invention. In this embodiment, the protection member 1 is attached to the tray 3 by a fixture 31 that can change the angle. By doing in this way, the protection member 1 can be rotated centering | focusing on the part of the fixing tool 31, and can be moved to the position of the protection member 1a. In the present embodiment, the gap s between the reference surface (ground) 13 and the trimming surface 12 can be fixed in accordance with the desired length of trimmed remaining vegetation. In the present embodiment, at this time, the height position (gap s) of the trimming machine main body may be changed and adjusted.
In the present embodiment, as described above, the vegetation is cut by the cutting surface 12 while being taken in through the gap t. By changing this to the position of the protective member 1a, the gap t is expanded to the gap u, and the vegetation is taken in from here. That is, it is possible to freely adjust the state in which the vegetation is taken in by raising or lowering the lower edge 11a of the protective member. Further, regarding turf trimming, when the turf is too stretched, the protective member is set to the lowered position, and when the turf is not stretched, the protective member 1a is set to the raised position. Can be used. Further, the fixing tool may be rotated and fixed at various angles in small increments so that it can be adjusted more finely. Although the rotation angle of a fixing tool is not specifically limited, For example, the aspect which enables rotation fixation in the range of up and down 30 degrees is mentioned. Alternatively, the side lower edge 11b can be largely rotated with respect to the trimming surface 12 so that the side lower edge 11b becomes substantially vertical, and the same state as when the protective member is removed is trimmed such as in the narrow region as described above. Can be suitably performed.

  FIG. 4 is an enlarged side view schematically showing a state of initial trimming in the lawn mowing work by the mower of the present invention, and FIG. 5 is an enlarged side view of the latter trimming stage. As shown in FIG. 4, the grass 21 is taken into the protective member 1 by starting the mower and moving it forward (x direction) along the ground surface 13. The turf 21 moves to the collection region 8 while being slightly bent by the front lower edge 11a of the protective member, reaches the trimming means 4, and is cut into the turf remnant 22 and the thatch 23. When the mowing machine is further moved forward to continue the trimming work, the latches are stacked in the height direction (y direction) of the protective member 1 as shown in FIG. Is collected in the collection area 8 of the protective member. At this time, the turf satch is usually several millimeters in width and several tens of millimeters in length, and is collected in a slender and entangled manner. For this reason, in the movement of the trimming machine at the level of the trimming work, the trapped catch 23 does not spill out, for example, backward (in the direction opposite to the x direction) or from the gap between the blades of the trimming means. Collection is realized. In order to increase the entanglement effect of such a hatch, for example, it is preferable to spray an appropriate amount of water on the grass before cutting. As a result, the action of the satch clinging to each other is enhanced, and a more effective collection effect is obtained.

  FIG. 6 is an enlarged side view showing the periphery of the protective member according to still another embodiment of the trimming machine of the present invention. FIG. 7 is a front view of the protective member shown in FIG. 6 as viewed from the direction VII. As shown in these drawings, the plate-like protective member 1 (1b) of the present embodiment is provided with a cut 31 in the lower part thereof. This notch 31 has a function of smoothing the turf or the like when the turf or the like is taken into the collection region 8. Specifically, as shown in FIG. 4 and FIG. 5, taking turf trim as an example, the turf enters the collection region while being slightly bent by the front lower edge 11a of the protective member. Then, the grass is trimmed by the trimming means 4 during this entry. At this time, if there is a notch 31 at the lower edge 11a of the protective member as in this embodiment, the grass moves to the collection region 8 while passing therethrough, so that bending of the grass is alleviated and trimming without further resistance. Work can be done. Moreover, the notch 31 of this embodiment is not too big, and is preferable at the point that the cutting waste collected once does not spill and fall easily from the part of the lower edge 11a.

  The cut width 31w of the cut 31 is not particularly limited, but is preferably 1 to 20 mm, and more preferably 3 to 10 mm. The height 31h of the cut 31 is not particularly limited, but is preferably 3 to 40 mm, and more preferably 5 to 25 mm. Although the pitch 31p which provides a notch is not specifically limited, It is preferable that it is 5-50 mm, and it is more preferable that it is 10-30 mm.

  In the protection member 1b of the present embodiment, comb teeth 32 are further disposed on the front lower edge 11a. The comb teeth are arranged on both sides of the notch 31 in parallel with the notch, that is, along the vertical direction (y direction) of the notch main body. The comb teeth 32 are arranged with their plate surfaces oriented in the front-rear direction (x direction) of the trimming machine. Thus, by arranging the comb teeth 32 in combination with the notches 31, the above-described influence of the lawn or the like being bent at the lower edge 11a of the protective member and being difficult to enter the collection region 8 can be further improved. That is, as described above, the smooth cutting operation is realized while the turf or the like moves through the notch 31, but the turf or the like is guided more effectively by the presence of the comb teeth 31. It becomes easy to move to. At this time, even if the lawn or the like is bent or falls down, for example, it is raised by the comb teeth 32 and can easily enter the vertically long cut 31. In addition, by moving the lawn and the like to the collection area 8 while aligning with the comb teeth 32 in this way, not only smoothing the forward movement of the trimming machine but also reducing the trimming resistance by the trimming means 4, And it is preferable at the point which can adjust to desired trimming length exactly. Further, the comb teeth 32 may be provided with a taper in the front-rear direction (x direction) for enhancing the above-described action.

  The height 32h of the comb teeth is not particularly limited, but is preferably 5 to 50 mm, for example, and more preferably 10 to 40 mm. The comb tooth pitch 32p is not particularly limited, but its preferred range is the same as the above-described cut pitch 31p. In the protection member 1b of the present embodiment, a form in which the cuts 31 and the comb teeth 32 are combined is shown. However, even if any of these is employed, either or both of these may be different. You may use it in combination with a structural member. Further, the cuts 31 and the comb teeth 32 may be alternately arranged one by one as in the present embodiment, but may be arranged in other arrangements. For example, a large number of cuts may be provided in small increments, and comb teeth may be provided only at the essential points, or a large number of small comb teeth may be provided in small increments, and cuts may be provided only at the essential points.

  FIG. 8: is a side view which expands and shows the periphery of a protection member about another embodiment of the trimming machine of this invention. The protection member 1 (1c) of the present embodiment has a bent portion 33 centering on the front surface portion, and a skirt portion 34 is formed in the lower portion thereof. The skirt portion 34 is in a state in which the skirt portion 34 is inclined and widened toward the front lower edge 11a of the protective member. Thereby, the entry of turf and the like from the front lower edge 11a is promoted, and a smoother mowing operation can be realized. The position where the bent portion 33 is provided is not particularly limited, but it is preferably provided at least on the front surface of the protective member as in the present embodiment, and may be extended to the side surface if necessary. The height of the bent portion is not particularly limited, but it is practical to be between the center and the lower edge (lower portion) of the protective member. The inclination angle θ forming the skirt portion 34 is not particularly limited, but it is practical to be within a range of 2 to 45 °.

  In the above description, lawn mowing has been described as the main embodiment of the hand-held mower of the present invention, but the present invention is not construed as being limited thereto. For example, the hand-held trimming machine of the present invention can be suitably used for pruning garden trees such as azaleas and cutting weeds, and can exhibit the above-described harvestability and safety of trimmed waste.

  Hereinafter, the present invention will be described in more detail based on examples, but the present invention should not be construed as being limited thereto.

(Comparative example)
Using a hand-held trimming machine for comparison (Ryobi, electric clipper AB-1100 (trade name)), in the beginning of July, a trimming test of about 50 to 100 mm in length, about two weeks after the previous trimming, was conducted. went. This comparative trimming machine is provided with two sliding blades having a total blade width of about 105 mm as trimming means. The machine has a tray 3 but does not have a protective member 1. In the above trimming test, grass was trimmed while moving the comparative mower forward (x direction) on the grass surface in a range of approximately 500 mm long × 500 mm wide. At the beginning of trimming, some turf (satch) trimmed on the trimming means (sliding blade) and on the saucer got on it, but gradually fell down. After that, the spills fell down as the turf was trimmed, leaving most of the satch on the trimmed turf. The amount of thatch left on the comparative mower after the above mowing work was 4.7 g.

(Example)
In the same manner as in the comparative example, except that the hand-held cutting machine used in the lawn mowing test was replaced with the mowing machine of the present invention in which the protective member 1 was attached to the comparative mowing machine as shown in FIG. Trimmed. At this time, as the protective member 1, an aluminum plate having a height w of about 60 mm, a length (total of the front part f and the side part e) of about 300 mm, and a thickness of 0.5 mm is processed into the shape shown in FIG. What was done was used. And this plate-shaped protection member 1 was attached and fixed to the tray 3 with bolts and nuts. The gap t between the protective member 1 and the trimming means 4 was about 5 mm, and the distance v was about 15 mm.

  The satch trimmed in the trimming test was collected with almost no spillage from the collection area 8 of the protective member 1. The amount of thatched collected was 50.7 g.

  When the remaining thatch was removed, the hand-held trimming machine of the present invention was able to finish trimming in about 1/5 of the time. However, with the comparative mower, a considerable amount of thatch remained even after the removal of the thatch and could not be recovered sufficiently. On the other hand, according to the hand-held mower of the present invention, there was hardly any thatch left on the turf surface.

  Moreover, in the comparative mower, it was necessary to pay close attention to the obstacles in front, which took time, but in the operation of the mower of the present invention, it was possible to safely and efficiently do not require excessive caution. The pruning work could be done.

It is a side view which shows typically one Embodiment of the handheld trimming machine of this invention. It is a top view which shows typically one Embodiment of the handheld trimming machine of this invention. It is an enlarged side view which shows typically the periphery of a protection member about another embodiment of the handheld trimming machine of this invention. It is an enlarged side view which shows typically the state of the initial trimming in the lawn mowing operation | work by the trimming machine of this invention. It is an enlarged side view which shows typically the state of the late trimming in the lawn mowing operation | work by the trimming machine of this invention. It is an enlarged side view which shows typically the periphery of a protection member about another embodiment of the handheld trimming machine of this invention. It is the front view which looked at the protection member shown in FIG. 6 from the direction of VII. It is an expanded side view which shows typically the periphery of a protection member about another embodiment of the trimming machine of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Plate-shaped protection member, 2 trimming machine main body, 3 saucer, 4 trimming means, 5 start switch, 6 grip hole, 7 power cord, 8 collection area, 9,31 fixing tool, 10 hand-held trimming machine, 11 under protection member Edge (11a front lower edge, 11b side lower edge), 12 trimmed surface, 13 reference surface (ground), 21 turf, 22 turf left after being trimmed (turf remaining), 23 trimmed turf (satch), 31 notches, 32 comb teeth, 33 bends, 34 skirts

Claims (9)

  A hand-held trimming machine having a trimming machine body, a trimming means and a plate-shaped protection member, wherein the trimming means is in front of the trimming machine body, and the plate-shaped protection member is further in front of the trimming means, And the handheld trimming machine characterized by being in the position which hits the upper part.   The hand-held trimming machine according to claim 1, wherein the trimming means is configured to trim a plant by sliding a plurality of blades with each other.   The hand-held trimming machine according to claim 1 or 2, wherein the plate-shaped protection member forms a wall and is capable of collecting vegetation cut into the wall.   The hand-held trimming machine according to any one of claims 1 to 3, wherein the plate-like protection member is extended from the front side to the side of the trimming means.   5. The tray according to claim 1, wherein a tray that is disposed below or behind the trimming unit is attached to the trimming machine main body, and the protection member is attached to the tray. Hand-held mower.   The hand-held trimming machine according to any one of claims 1 to 5, wherein there is a gap between a trimming surface on which the trimming unit trims vegetation and a lower edge of the plate-like protection member.   The handheld trimming machine according to claim 6, wherein a width of the gap can be adjusted.   The hand-held trimming machine according to any one of claims 1 to 7, wherein a cut and / or a comb tooth are provided at a lower edge of the protective member.   A plate-shaped protection member used for a hand-held trimming machine having a trimming means in front of the trimming machine body, wherein the plate-shaped protection member is arranged further forward and above the trimming means. A protective member for a hand-held trimming machine.

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