JP2018153124A - Takaeda Kiritsugu - Google Patents

Abstract

The present invention provides a high-edged culvert that can reduce the burden on a worker with a simple structure. A heel portion of a Takaeda cutting rivet includes a fixed blade 20 fixed to the tip of the heel portion, and a movable blade 21 attached to the tip of the heel portion so as to be freely opened and closed according to the operation of the operation portion. Prepare. The fixed blade 20 includes a rack gear 20e formed along the inner periphery of the long hole 20d. On the other hand, the movable blade 21 includes a pinion gear 35 that meshes with the rack gear 20e, a reduction gear that rotates in synchronization with the pinion gear 35, and a pinion gear that engages with the reduction gear. [Selection] Figure 2

Description

  The present invention relates to a high branch cutting shear used for pruning high branches or collecting fruits.

  In orchards and the like, pruning work is indispensable for various reasons such as improving air permeability between trees, increasing photosynthesis by applying sunlight widely, and preventing fruits from being attached to high places.

  In addition, it is necessary to perform branching work so that trees on the street do not grow, cover signs, etc., and do not extend branches to adjacent buildings. For such work, a Takaeda cutting shear is used.

  If it demonstrates based on FIG. 7, the high branch cutting rod 1 is provided with the collar part 3 provided in the front-end | tip part of the collar part 2, and the operation part of illustration omitted provided in the base end part of the collar part 2. As shown in FIG. The flange 3 includes a fixed blade that is fixed to the tip of the flange 2 and a movable blade that can be moved in response to the operation of the operation unit. Yes.

  Therefore, a branch is cut | disconnected by operating the said operation part in the state which pinched the branch etc. between the said fixed blade and the said movable blade, and the pruning operation | work etc. are implemented. A configuration similar to this Takaeda-Kiri 1 is disclosed in Patent Document 1 and the like.

ACT 7-25728 JP 2002-254402 A

  Pruning work and branching work using the high branch cutting pole 1 are often performed in winter when the sap activity is slow, and the high branch cutting pole 1 requires a relatively large force for its operation.

  Therefore, when the movable blade is rattled at the time of pruning or the like, the physical burden on the worker is increased, and it is particularly difficult for a weak person such as a woman or an elderly person. In view of this, although a high-edged shear that uses the rotational driving force of the prime mover shown in Patent Document 2 has been proposed, there is a possibility that the apparatus itself becomes large, and on the contrary, it may not be possible to work easily in terms of weight and cost.

  The present invention has been made in order to solve such a conventional problem, and it is an object of the present invention to provide a high branch cutting bar that can reduce the burden on workers with a simple structure.

  (1) The present invention relates to a high branch cutting scissor comprising a collar provided at the tip of the collar and an operation part provided at the proximal end of the collar. The flange includes a fixed blade that is fixed to the tip of the flange, and a movable blade that is movably attached according to the operation of the operation unit. The fixed blade includes a rack gear formed along the inner periphery of the hole, while the movable blade includes a first gear that meshes with the rack gear.

  (2) As one mode of the present invention, the hole can be formed as a long hole. In this case, the rack gear may be formed at an arbitrary position in the axial direction of the hole.

  (3) As another aspect of the present invention, the movable blade may include a second gear that rotates in synchronization with the first gear, and a third gear that engages with the second gear.

  In this case, the gear ratio between the second gear and the third gear can be determined according to the arm strength of the operator. For example, the gear ratio is preferably set in the range of 5: 1 to 2: 1.

  ADVANTAGE OF THE INVENTION According to this invention, the high branch cutting rod which can reduce a worker's burden can be provided with a simple structure.

The right view of the Takaeda sash which concerns on embodiment of this invention. The left side perspective view of the collar part when opening the same movable blade. The right side view of the same part. The left perspective view of the collar part when the movable blade is closed and operated. The right side view of the same part. The left perspective view which shows another example. The use state figure of Takaeda Kirin.

  Hereinafter, a high branch cutting device according to an embodiment of the present invention will be described. This Takaeda kiri is used, for example, for pruning high branches or collecting fruits.

≪Configuration example≫
(1) The overall structure of the Takaeda cutting shear will be described with reference to FIG. As in the prior art, the high branch cutting bar 11 is provided with a single hook (pole) 12, a hook 13 provided at the distal end of the hook 12, and a base end of the hook 12. A handle 15 is attached to the outer periphery of the approximate center of the collar 12.

  The collar part 13 includes a fixed blade 20 screwed to the tip of the collar part 12 and a movable blade 21 attached to the tip of the collar part 12 so as to be able to open and close according to the operation of the operation part 4. .

  Connected to the rear end of the movable blade 21 is the tip of the operating rod 22 that has entered the collar portion 12. A coil spring 24 that urges the movable blade 21 in a direction to always open is interposed between the joint fitting 23 attached to the rear end of the operation rod 22 and the tip of the flange portion 12.

  The operation unit 14 includes a fixed lever 25 that is fixed to the rear end of the collar unit 12 and a movable lever 27 that is rotatably attached to the fixed lever 25 via a shaft portion 26. The winding spring 28 attached to the portion 26 is always biased in the opening direction.

  A flexible and bendable connecting member 28 such as a steel wire wire or a synthetic resin rope is inserted into the collar portion 12, and one end of the connecting member 28 is connected to the operation rod 22 via the joint fitting 23. On the other hand, the other end of the connecting member 28 is connected to the movable lever 27. Up to this point, the configuration is the same as the conventional one, but the high branch cutting rod 11 is significantly different from the conventional configuration in the configuration of the fixed blade 20 and the movable blade 21.

  (2) The configuration of the fixed blade 20 and the movable blade 21 will be described with reference to FIGS. First, as shown in FIG. 2, the fixed blade 20 has a fixed portion 20a fixed to the tip of the collar portion 12, a base portion 20b that supports the movable blade 21 so that it can be opened and closed, and a receiving portion 20c for cutting. And each part 20a-20c is integrally formed.

  The fixing portion 20a is fixed to the tip of the flange portion 12 by inserting a bolt (not shown) into the mounting hole 20f and fastening a nut. Further, the base portion 20b is formed with an arc-shaped long hole 20d penetrating along the axial direction, and a rack gear 20e is formed on the inner periphery of the long hole 20d.

  Next, as shown in FIGS. 2 and 3, the movable blade 21 has a base portion 21a that is rotatably supported by the fixed blade 20, and a blade portion 20b that faces the receiving portion 20c. 21b is integrally formed. Here, communication holes (not shown) are formed in both base portions 20b and 21a. Bolts 31 are communicated with the communication holes, and nuts 32 and 39 are fastened to both ends of the shaft bolt 31, thereby opening and closing the movable blade 21. It is pivotally supported.

  Further, a pinion gear 35 that engages with the rack gear 20e, a reduction gear 36 that rotates in synchronization with the pinion gear 35, and a pinion gear 37 that engages with the reduction gear 36 are pivotally supported on the base 21a.

  That is, a through hole and a screw hole (not shown) are formed in the base portion 21a, and a shaft bolt 38 is inserted into the through hole and both the gears 35 and 36. A nut 40 is fastened to one end of the shaft bolt, and a nut (not shown) is fastened to the other end of the shaft bolt 38, whereby both gears 35 and 36 are rotatably attached to the base 21a.

  Further, when the bolt 39 is fastened to the screw hole of the base portion 21a, the pinion gear 37 is rotatably attached to the shaft portion of the bolt 39. At this time, the gear ratio between the reduction gear 36 and the pinion gear 37 can be set according to the arm strength of the user. For example, if the user has weak arm power, such as a woman or an elderly person, the gear ratio between the reduction gear 36 and the pinion gear 37 is preferably set within a range of “5: 1 to 2: 1”.

≪How to use≫
Hereinafter, a method for using the Takaeda culvert 11 will be described. First, at the time of pruning work or branching work, a tree branch or the like is sandwiched between the receiving part 20c and the blade part 21b of both the blades 20 and 21 while the heel part 13 shown in FIGS.

  If the movable lever 27 is closed in this state, the movable blade 21 is pulled and moves in the direction indicated by the arrow P. Thereby, the movable blade 21 shifts to the closed state of the eaves portion 13 shown in FIGS. 4 and 5, and a tree branch or the like is cut by the blade portion 21 b. At this time, according to the high branch cutting rod 11, the rotational force (torque) of the pinion gear 37 is amplified by the reduction gear 36, so that the force required for cutting trees and the like can be reduced.

  Further, since the pinion gear 35 is rotationally driven along the inner periphery of the long hole 20d while being engaged with the rack gear 20e, rattling or the like when the movable blade 21 is cut can be suppressed. The physical burden of can be reduced.

  As a result, according to the Takaeda culvert 11, even a user with weak arm strength, such as a woman or an elderly person, can easily perform a branching operation at a high place. In this case, the high branch cutting bar 11 does not use a large-scale device as in Patent Document 2, and makes it possible to easily perform pruning work and branching work.

  As a result, it is possible to provide a high branch cutting device that can reduce the physical burden on the user with a simple structure. Further, when the movable lever 27 is returned and opened after cutting, the movable blade 21 is drawn by the urging of the coil spring 24 to operate in the opening direction of the arrow Q, and the blade portions 20c and 21b are pulled apart. It returns to the open state of the collar part 13 shown in FIG.

  In addition, this invention is not limited to the said embodiment, It can deform | transform and implement within the range described in each claim. For example, as shown in FIG. 6, jackets (covers) 45 and 46 may be attached to the fixed blade 20 and the movable blade 21 for use. Here, a screw hole is formed in the fixed blade 20 and the jacket 46 is attached, while the jacket 45 is fastened to the shaft bolt 31 with nuts 32 and 39.

DESCRIPTION OF SYMBOLS 11 ... Takaeda cutting scissors 12 ... Butting part 13 ... Butting part 14 ... Operation part 20 ... Fixed blade 20d ... Long hole (hole)
20f ... rack gear 21 ... movable blade 35, 37 ... pinion gear (first gear, third gear)
36 ... Reduction gear (second gear)

Claims (4)

A high branch cutting scissor comprising a collar provided at the distal end of the collar and an operation part provided at the proximal end of the collar,
The collar part includes a fixed blade fixed to the tip of the collar part, and a movable blade attached to be freely opened and closed according to the operation of the operation part,
While the fixed blade includes a rack gear formed along the inner periphery of the hole,
The movable blade includes a first gear that meshes with the rack gear. While the hole is formed in a long hole,
The high-branch cutter according to claim 1, wherein the rack gear is formed at an arbitrary position in the axial direction of the hole. The movable blade includes a second gear that rotates in synchronization with the first gear;
The high-edged shears according to claim 1, further comprising a third gear engaged with the second gear.   The high branch cutter according to claim 3, wherein a gear ratio between the second gear and the third gear is set in a range of 5: 1 to 2: 1.

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