JP2014082939A - Hedge trimmer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the troublesomeness of attaching/detaching a blade cover and a chip receiver to/from a blade when in operation and storage.SOLUTION: A hedge trimmer is provided, in which each one lateral side of a blade cover 9 and a chip receiver 10 are fastened to the upper surface of a blade assembly 8 using fastening means (a plurality of screws 8d and knob nuts 12), and the other lateral side of the blade cover 9 is allowed to change its position between a position where the blade (an upper blade 8a and a lower blade 8b) is protected and a position where the blade (the upper blade 8a and the lower blade 8b) is exposed.

Description

  The present invention relates to a hedge trimmer used for pruning garden trees, pruning hedges, and the like.

  Conventionally, some hedge trimmers are provided with a blade case as shown in Patent Document 1 in order to protect the blades during storage (when not in use). The blade case has a cylindrical shape mainly molded of plastic or the like. When the blade case is mounted on the blade, a method of inserting the blade into the blade case from the front end side in parallel in the longitudinal direction is common.

  In such a hedge trimmer, when the blade case is mounted on the blade, for example, the clearance between the blade case and the blade is reduced, so that the blade case is held in a temporarily fixed state with respect to the blade.

  Moreover, since the blade case is held in a state of being inserted into the blade, it is easy to remove and attach the blade case.

Japanese Patent Laying-Open No. 2005-137285 (FIG. 1)

  By the way, in the hedge trimmer shown in Patent Document 1 described above, if the blade case removed from the blade is accidentally dropped, the blade case is hard and may be deformed or damaged.

  In this way, if the blade case is deformed or damaged, the amount of clearance from the blade will increase, and if the blade tip is directed downward with the blade case attached, the blade case will fall from the blade due to its own weight. There is a risk of it.

  As a means for solving such problems, for example, a chip receiver that temporarily collects cut leaves and the like is mounted, and a cover portion that serves as a blade cover for protecting the blade on the chip receiver A hedge trimmer is considered that is integrated (integrated molding with a resin material or the like).

  In such a hedge trimmer, since the cover part is integrated with the chip receiver, the cover part is once removed from the blade at the time of work, but is attached to the blade as it is with one touch. The situation that accidentally drops is avoided.

  In other words, the chip receiver is provided with an engaging portion that is engaged with the engaging portion protruding from the blade, and the engaging portion is engaged with the engaging portion, so that the chip receiver can be cut during operation. It is now possible to collect temporary branches and leaves.

  On the other hand, the cover portion is provided with a storage portion for storing the blade. During storage, the engaging portion of the chip receiver is detached from the engaging portion protruding from the blade, and the blade is inserted into the housing portion of the cover portion in parallel with the longitudinal direction from the tip side in the same manner as described above. Thus, the blade can be protected.

  However, such a hedge trimmer requires an action of once engaging the engaging portion of the chip receiver with the engaging portion of the blade after removing the cover portion from the blade.

  On the other hand, when storing the hedge trimmer, it is necessary to disengage the engaging part of the chip receiver from the engaging part of the blade and then insert the housing part of the cover part in parallel to the longitudinal direction from the tip side of the blade It becomes.

  For this reason, when the hedge trimmer is operated and stored, there is a problem that the attachment and detachment of the cover part and the chip receiver, which serve as the blade cover with respect to the blades, is bothersome. Further, there is a possibility that the blade cover may be lost when it is removed from the blade.

  The present invention has been made in view of such a situation, and an object of the present invention is to provide a hedge trimmer that can eliminate the trouble of attaching and detaching the blade cover and the chip receiver to and from the blade during operation and storage. .

The hedge trimmer of the present invention is a hedge trimmer equipped with a blade assembly having at least a reciprocating blade, wherein the blade assembly protects the blade, and a chip receiver that temporarily collects cut branches and leaves. The blade cover is displaceable between a position for protecting the blade and a position for exposing the blade.
Also, on the upper surface of the blade assembly, one side of the blade cover and the chip receiver is fastened by fastening means, and the other side of the blade cover protects the blade, and a position where the blade is exposed. It is possible to displace between.
The fastening means includes a screw mounted so that a tip side protrudes from an upper surface of the blade assembly, and a knob nut screwed to the tip side of the screw, and a rear surface on the other side of the chip receiver. A collecting wall having an engaging protrusion is provided on the other side of the blade cover, and an engaging hole that is engaged with the knob nut or the engaging protrusion is provided on the other side of the blade cover to protect the blade. In the position, the engagement hole on the other side of the blade cover is engaged with the knob nut, and in the position where the blade is exposed, the engagement hole on the other side of the blade cover is engaged with the collection wall. It is characterized by being engaged with the mating protrusion.
The blade cover is formed of a deformable material.
In the hedge trimmer of the present invention, a blade cover for protecting the blade and a chip receiver for temporarily collecting the cut branches and leaves are attached to the blade assembly, and the blade cover is attached to and detached from the blade assembly. It can be displaced between a position for protecting the blade and a position for exposing the blade.

  According to the hedge trimmer of the present invention, the blade cover can be displaced between the position for protecting the blade and the position for exposing the blade without removing the blade cover from the blade assembly. In this case, the troublesomeness of attaching and detaching the blade cover and the chip receiver to the blade can be eliminated.

It is a disassembled perspective view which shows one Embodiment of the hedge trimmer of this invention. It is a top view which shows the hedge trimmer of FIG. It is sectional drawing which shows the case where the hedge trimmer of FIG. 2 is cut | disconnected in a longitudinal direction and the hedge trimmer is seen from the side surface. It is a front view which shows the time of work of the hedge trimmer of FIGS. It is a front view which shows the time of storage of the hedge trimmer of FIGS.

  Hereinafter, an embodiment of the hedge trimmer of the present invention will be described with reference to FIGS.

  First, as shown in FIG. 1, the hedge trimmer includes a hedge trimmer main body 1, a blade assembly 8, a blade cover 9, and a chip receiver 10.

  As shown in FIGS. 1 to 3, a storage battery 11 as a power source is detachably mounted on the rear end side of the hedge trimmer body 1. Further, the hedge trimmer body 1 is provided with a handle 2 extending in the longitudinal direction and a sub handle 3 extending in a direction orthogonal to the longitudinal direction.

  The handle 2 is provided with a switch 4 as shown in FIG. A control unit 5 is provided inside the handle 2. In addition, a motor 6 and a speed reduction mechanism section 7 are provided inside the hedge trimmer body 1 that communicates with the internal space of the handle 2. When the switch 4 is turned on, the electric power from the storage battery 11 controlled by the control unit 5 is supplied to the motor 6.

  The output from the motor 6 is transmitted to a motor pinion 7a constituting the speed reduction mechanism section 7, and a first gear 7b and a final gear 7c that are molded or fastened so as to be integrally rotatable. Further, an eccentric cam 13 is disposed below the final gear 7c, and the eccentric cam 13 rotates in conjunction with the final gear 7c. Then, the rotational motion is transmitted to the blade assembly 8 by the eccentric cam 13.

  The blade assembly 8 is provided with a blade holder 8f and a holder plate 8c as shown in FIGS. The blade holder 8f and the holder plate 8c are elongated. Between the blade holder 8f and the holder plate 8c, there are disposed an upper blade 8a and a lower blade 8b in which a plurality of blade portions are integrally formed.

  Further, as shown in FIG. 3 and the like, the upper blade 8a and the lower blade 8b have a plurality of screws 8d, nuts 8e, and spacers 8g inserted into the screws 8d, so that the blade holder 8f and the holder plate 8c are connected to each other. It is attached with a slight gap in between. That is, the upper blade 8a and the lower blade 8b are slidably held between the blade holder 8f and the holder plate 8c with the blade portions protruding from the left and right in the longitudinal direction of the blade holder 8f and the holder plate 8c.

  When the rotational motion is transmitted to the blade assembly 8 by the eccentric cam 13, the upper blade 8a and the lower blade 8b are moved between the spacer 8g and guide holes (not shown) of the upper blade 8a and the lower blade 8b. Each is designed to move in the front-rear direction. Thereby, branches and leaves can be trimmed.

  Moreover, the front end side of the plurality of screws 8d protrudes from the upper surface of the holder plate 8c as shown in FIGS. Further, the tip end side is screwed and fixed by a knob nut 12. Here, the plurality of screws 8d and the knob nut 12 constitute fastening means. The blade cover 9 and the chip receiver 10 are formed with insertion holes 9a and 10a described later.

  As shown in FIGS. 2 to 5, the leading ends of the plurality of screws 8 d are inserted into the insertion holes 9 a and 10 a, and the leading ends of the plurality of screws 8 d are screwed together by the knob nut 12. The blade cover 9 and the chip receiver 10 are screwed and fixed between the blade holder 8f and the holder plate 8c.

  Here, the blade cover 9 is formed of a deformable material (for example, vinyl chloride). Thereby, the position of the other side of the blade cover 9 can be changed (displaced) as described later. Further, as shown in FIG. 1 and the like, an insertion hole 9a is formed on one side of the blade cover 9 through which the tip of the screw 8d described above is inserted. A plurality of circular engagement holes 9 b are formed on the other side of the blade cover 9.

  In the illustrated example, two engagement holes 9b are formed, but one or three or more may be used. Further, in the illustrated example, the engagement hole 9b is shown in a circular shape, but other shapes such as a triangle, a quadrangle, a rhombus, and an ellipse may be used. In any case, these engagement holes 9b may have a shape that can be engaged with a plurality of engagement protrusions 10c described later of the chip receiver 10 or the knob nut 12 described above.

  The details of engagement of these engagement holes 9b with a plurality of engagement protrusions 10c described later of the chip receiver 10 or the knob nut 12 described above will be described later.

  Further, on one side of the chip receiver 10, an insertion hole 10a through which the tip end side of the screw 8d described above is inserted is formed. The chip receiver 10 is provided with a collecting wall 10b formed so as to gradually increase from one side to the other side. By this collection wall 10b, the cut leaves and the like are received so as not to be scattered.

  A plurality of columnar engaging projections 10c are provided on the back side of the collection wall 10b. In the illustrated example, two engagement protrusions 10c are shown, but one or three or more may be used. Further, in the illustrated example, the engagement protrusion 10c is shown in a columnar shape, but other columnar shapes such as a triangular column shape, a quadrangular column shape, a rhombus column shape, an elliptic column shape, etc. Also good. In any case, these engagement protrusions 10c may be columnar so that the engagement holes 9b of the blade cover 9 described above are engaged.

  In the hedge trimmer having such a configuration, as described above, the blade cover 9 and the chip receiver 10 are provided with a plurality of screws 8d between the blade holder 8f and the holder plate 8c, and the knob nut 12 screwed into these screws 8d. Are fixed by screwing.

  Then, at the time of work, for example, as shown in FIG. 4, the other side where the engagement hole 9 b of the blade cover 9 is formed is bent to the back side of the chip receiver 10 (the position on the other side is displaced). The engagement hole 9b is engaged with the engagement protrusion 10c on the back side of the collecting wall 10b of the chip receiver 10. Thereby, the other side of the blade cover 9 is fixed to the back side of the collecting wall 10b.

  Further, the other side of the blade cover 9 is fixed to the back side of the collecting wall 10b, so that the upper blade 8a and the lower blade 8b of the blade assembly 8 are exposed. Accordingly, by turning on the above-described switch 4 and operating the upper blade 8a and the lower blade 8b of the blade assembly 8, it is possible to trim branches and leaves.

  At this time, since the other side of the blade cover 9 is fixed to the back side of the collecting wall 10b, the blade cover 9 does not obstruct the work of cutting leaves and the like. The cut leaves and the like are received by the collecting wall 10b formed so as to gradually increase from one side of the chip receiver 10 to the other side so as not to be scattered.

  On the other hand, during storage, for example, as shown in FIGS. 2 and 5, the engagement hole 9 b on the other side of the blade cover 9 is detached from the engagement protrusion 10 c on the back side of the collecting wall 10 b of the chip receiver 10. Then, the other side is folded back to one side of the chip receiver 10 as it is (the position on the other side is displaced). Then, the engagement hole 9 b on the other side of the blade cover 9 is engaged with the knob nut 12.

  Thus, the upper blade 8a and the lower blade 8b of the blade assembly 8 are covered with the blade cover 9 so as not to be exposed to the outside.

  As described above, the blade cover 9 and the chip receiver 10 are screwed and fixed by a plurality of screws 8d between the blade holder 8f and the holder plate 8c and the knob nut 12 screwed to these screws 8d. Therefore, even if the front end side of the blade assembly 8 is directed downward, the blade cover 9 and the chip receiver 10 do not fall.

  As described above, in this embodiment, the blade assembly 8 having at least the reciprocating blades (the upper blade 8a and the lower blade 8b) is trimmed with the blade cover 9 that protects the blades (the upper blade 8a and the lower blade 8b). A chip receiver 10 that temporarily collects the branches and leaves is attached, and the blade cover 9 exposes the blade (upper blade 8a and lower blade 8b) and a position that protects the blade (upper blade 8a and lower blade 8b). It was designed to be freely displaceable between positions.

  Specifically, one side of the blade cover 9 and the chip receiver 10 is fastened to the upper surface of the blade assembly 8 by fastening means (a plurality of screws 8d and a knob nut 12), and the other side of the blade cover 9 is the blade. It was made to be displaceable between a position for protecting (the upper blade 8a and the lower blade 8b) and a position for exposing the blade (the upper blade 8a and the lower blade 8b).

  Further, a collecting wall 10b having an engaging projection 10c on the back side is provided on the other side of the chip receiver 10, and the engagement with the knob nut 12 or the engaging projection 10c is provided on the other side of the blade cover 9. In the position where the joint hole 9b is provided to protect the blade (upper blade 8a and lower blade 8b), the engagement hole 9b on the other side of the blade cover 9 is engaged with the knob nut 12, and the blade (upper blade 8a and lower blade 8b) is engaged. At the position where the blade 8b) is exposed, the engagement hole 9b on the other side of the blade cover 9 is engaged with the engagement protrusion 10c of the collection wall 10b.

  The blade cover 9 is made of a deformable material (for example, vinyl chloride).

  Accordingly, the blade cover 9 is not detached from the blade assembly 8, and the blade (upper blade 8a and lower blade 8b) is protected from the position where the blade (upper blade 8a and lower blade 8b) is exposed. Since it can be displaced, the troublesomeness of attaching and detaching the blade cover 9 and the chip receiver 10 with respect to the blades (the upper blade 8a and the lower blade 8b) can be eliminated during operation and storage.

  In this embodiment, the case where the storage battery 11 is used as the power source of the motor 6 that drives the blade assembly 8 is described. However, the present invention is not limited to this example, and the blade assembly 8 is driven by the power obtained through the power cord. The structure used as the motive power source of the motor 6 may be sufficient. Moreover, the structure which used the drive force of the engine as the motive power source which drives the blade assembly 8 may be sufficient.

  In the present embodiment, the upper blade 8a and the lower blade 8b are described as moving in the front-rear direction. However, the present invention is not limited to this example. For example, the lower blade 8b is a fixed blade, and the upper blade 8a. May be a movable blade.

DESCRIPTION OF SYMBOLS 1 Hedge trimmer main body 2 Handle 3 Sub handle 4 Switch 5 Control part 6 Motor 7 Deceleration mechanism part 7a Motor pinion 7b First gear 7c Final gear 8 Blade assembly 8a Upper blade 8b Lower blade 8c Holder plate 8d Screw 8e Nut 8f Spacer 8g Spacer Blade cover 9a Insertion hole 9b Engagement hole 10 Chip receiver 10a Insertion hole 10b Collection wall 10c Engagement protrusion 11 Storage battery 12 Knob nut 13 Eccentric cam

Claims (4)

A hedge trimmer equipped with a blade assembly having at least a reciprocating blade,
A blade cover for protecting the blade and a chip receiver for temporarily collecting the cut leaves are attached to the blade assembly.
The hedge trimmer, wherein the blade cover is freely displaceable between a position for protecting the blade and a position for exposing the blade. On the upper surface of the blade assembly, one side of the blade cover and the chip receiver is fastened by fastening means,
The hedge trimmer according to claim 1, wherein the other side of the blade cover is displaceable between a position where the blade is protected and a position where the blade is exposed. The fastening means comprises a screw mounted so that the tip side protrudes from the upper surface of the blade assembly, and a knob nut screwed to the tip side of the screw,
On the other side of the chip receiver, a collecting wall having an engaging protrusion on the back surface is provided,
On the other side of the blade cover, an engagement hole that is engaged with the knob nut or the engagement protrusion is provided,
In a position to protect the blade, an engagement hole on the other side of the blade cover is engaged with the knob nut,
The hedge trimmer according to claim 2, wherein an engagement hole on the other side of the blade cover is engaged with an engagement protrusion of the collection wall at a position where the blade is exposed.   The hedge trimmer according to claim 1, wherein the blade cover is made of a deformable material.

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