JP3212658U - Mowing mower by standing posture - Google Patents

Abstract

Provided is a manual type mower capable of performing work in a standing posture and smoothly transmitting a pattern opening / closing operation to a blade body. A crossing portion of a pair of handles 1 and 1 is pivotally supported by a first support shaft 12 so as to be substantially L-shaped at the inner positions of the tip ends of the pair of handles 1 and 1, respectively. The vertical pieces 21 and 21 of the couplers 2 and 2 with the horizontal pieces 22 and 22 facing inward are pivotally supported by the second support shafts 13 and 13 in the direction connecting the tips of the pair of handles 1 and 1. . Fourth support shafts 5, 5 parallel to the fifth support shaft 6 are provided at the base end portions of the pair of blade bodies 8, 9 that are pivotably supported by the fifth support shaft 6, respectively. The fourth support shafts 5, 5 provided at the base end of 9 are pivoted on the horizontal pieces 22, 22 of the connectors 2, 2 by third support shafts 4, 4 orthogonal to the fourth support shafts 5, 5, respectively. Support and connect. [Selection] Figure 1

Description

  The present invention relates to a mower that can cut weeds and the like in a standing posture.

  Manual mowers generally work in a crouched posture to cut weeds on the surface. As described above, when the work is performed with a bent and unnatural posture, there is a disadvantage that the work cannot be performed efficiently because the work is very tired. In view of such a situation, as disclosed in Patent Documents 1 and 2, the tip end of the handle that pivotally supported the intermediate position is connected to the base end portion of the pair of blades pivotally supported by the support shaft, and separated. The thing which can open and close a blade body from a position and can perform the work of mowing and pruning is devised.

  In Patent Literature 1, the base ends of a pair of blade bodies that are openable and closable by supporting a connecting component on the shaft in the same direction as the shaft that pivotally supports the handle at the tip portion of the pair of handles pivotally supported at the intermediate position. A structure is disclosed in which the opening / closing operation of the handle is transmitted to the opening / closing operation of the blade body by pivotally supporting the part and the connecting part with an axis in the extending direction of the handle. In this structure, the mowing work can be performed according to the standing posture.

  In the invention described in Patent Document 1, the opening / closing operation of the handle is transmitted as the opening / closing motion of the blade, and grass cutting can be performed obliquely forward in a standing posture, but the angle is constant and the blade and the handle are fixed. The angle cannot be adjusted. In Patent Document 2, the angle adjustment between the blade body and the handle is performed by supporting the structure in a pressed state by a spring so that the shaft support structure is maintained between the distal end portion of the handle and the base end portion of the blade body. A structure that can transmit the opening / closing operation of the handle to the blade body at an adjusted angle is disclosed.

JP-A-8-116787 JP 2016-47043 A

  By the way, during the opening / closing operation of the handle, the tip of the handle rotates around the support shaft of the handle. On the other hand, during the opening / closing operation of the blade body, the blade body rotates about the support shaft of the blade body. All of these rotations have a planar spread. In mowing work, if the rotation plane of the handle and the rotation plane of the blade are not parallel (when the angle is adjusted), the rotation plane of the handle (the tip of the handle) and the rotation plane of the blade (the blade By simply connecting the base end portion to the base end portion, a load is applied to form a gap corresponding to the adjustment angle at the connection portion (axial support structure), that is, a twisting force is generated.

  In the invention described in Patent Document 2, the opening / closing operation of the handle can be transmitted to the blade body by maintaining the shaft support structure in a pressed state by a spring. In this configuration, since the axial direction is pressed so as to crush the gap, the force generated by twisting between the base end portion of the blade body and the tip end portion of the handle cannot be eliminated, and resistance to the opening / closing operation of the blade body is not achieved. Remain.

  SUMMARY OF THE INVENTION In view of the above-described problems of the prior art, the present invention can perform mowing work in a standing posture, and aims to smoothly convey the opening / closing operation of the handle as the opening / closing operation of the blade body. is there.

  In order to achieve the above object, the intersecting portion of the pair of handles crossed is pivotally supported by the first support shaft, and is substantially L-shaped and horizontally at the inner positions of the tip ends of the pair of handles. A base of a pair of blades that pivotally supports a vertical piece of a connecting tool with the pieces facing inward by a second support shaft in a direction connecting the tips of the pair of handles, and is pivotably supported by a fifth support shaft. A fourth support shaft parallel to the fifth support shaft is provided at each end, and the fourth support shafts provided at the base end portions of the pair of blade bodies are respectively third support orthogonal to the fourth support shaft. The shaft is pivotally supported and connected to the horizontal piece of the connector.

  Further, the connection of the fourth support shaft to the horizontal piece uses a third support shaft fixed orthogonally to the fourth support shaft and a receiving member, and the receiving member inserts the horizontal piece. And an upper insertion portion to be fixed, and the fourth support shaft to be rotatable in the horizontal direction, and have a slot formed in a fan shape below, and one end of the fourth support shaft passes through the slot. It is preferably provided so as to be guided and rotatable.

  Further, a closing restriction that is fixed at a fixed position of one of the pair of blades and engages with the other blade to prevent the pair of blades from closing below a lower limit of a certain angle range. A stopper is provided, and the closing limit stopper is fixed at a position facing inward of the base end portion of one blade body, and is provided to be suspended from the one blade body toward the rotation plane of the other blade body. Is preferred.

  According to the first aspect of the present invention, in the grass cutter with the angle adjusted, the handle rotation plane of the handle and the rotation plane of the blade body are opened and closed by holding the handle at the handle proximal end in a standing posture. The force generated so as to be twisted due to the inclination of the third support shaft can be eliminated by the rotation of the third support shaft and the rotation of the fourth support shaft. Therefore, the opening / closing operation of the handle can be smoothly transmitted to the blade body. Further, the angle between the blade body and the handle can be adjusted by rotating the second support shaft. Therefore, when storing or transferring the mower itself, it is possible to safely store or transfer the blade body part by folding the blade part back to the handle side to shorten the overall length.

  The invention according to claim 2 relates to a specific shaft support structure of a portion connecting the coupling tool and the blade body. According to the invention described in claim 2, the blade body can be positioned away from the handle by the receiving member. When the blade body is opened and closed, the blade body and the support structure can be prevented from coming into contact with the handle, and a rotation range by the third support shaft and the fourth support shaft can be secured. When switching the blade tip closer to the handle to switch to the stored state, or when switching from the stored state to another state, insert the hand into the space created between the blade and the handle by the receiving member, and move the blade of the blade body. A blade can be safely held and supported by a finger other than the side end, and the blade can be supported.

  According to the third aspect of the present invention, it is possible to prevent over-closure by the closing restriction stopper, and to prevent each collision such as a horizontal piece (receiving member) protruding inward from the tip of the handle when the handle is closed. can do.

FIG. 1 is an overall perspective view of a mowing cutter showing a usage pattern of the present invention. FIG. 2 is an exploded perspective view of the assembled state of the grass cutter shown in FIG. 3 is a cross-sectional view taken along line VV in FIG. FIG. 4 is a partially enlarged plan view of the portion shown in FIG. FIG. 5 is a side view of the grass cutter shown in FIG. FIG. 6 is a side view of the stowage state of the grass cutter shown in FIG.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a mower with a standing posture according to the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is an overall perspective view showing an embodiment of a mower according to the present invention in a standing posture and showing a use state. FIG. 2 is an exploded perspective view of the assembled state of the grass cutter shown in FIG. FIG. 3 is a front view of the cross section taken along the line VV in FIG. 5, and shows an enlarged view showing a state in which the handle 1, 1, connector 2, 2, receiving member 3, 3 and blade body 8, 9 are supported. FIG. 4 is a plan view of the grass cutter showing the shaft support state shown in FIG. 3 and the open / closed state of the blade bodies 8 and 9, and FIG. 5 is a side view of the grass cutter shown in FIG. FIGS. 6 and 6 are side views showing the stowage state of the mower shown in FIG.

  The mower according to the illustrated embodiment has a pair of blades that are pivotally supported by a first support shaft 12 and a pair of handles 1 and 1 that are pivotally supported by a first support shaft 12 and a fifth support shaft 6 that can be opened and closed. The blades 8 and 9 are configured to open and close the blades 8 and 9 by holding the grips 11 and 11 of the handles 1 and 1 in a standing posture, and perform cutting work by opening and closing the blades 8 and 9.

  An example of a mowing mower in use is shown in FIG. In the state of use, the blades 8 and 9 are oriented in the horizontal direction, the vertical pieces 21 and 21 of the couplers 2 and 2 are oriented in the vertical direction, and the horizontal pieces 22 and 22 are oriented in the horizontal direction. With the blades 8, 9 in the horizontal direction, the user holds the grips 11, 11 at the ends of the handles 1, 1 rising from the blades 8, 9 and folds the grass at his feet in a standing state (one pair The blades 8 and 9) are used for cutting. In the following description, the vertical direction and the horizontal direction will be described in the state of FIG.

  As shown in FIGS. 1 and 2, the two handles 1 and 1 have a predetermined length that rises obliquely from the vicinity of the ground to the vicinity of the user's hand, and grip-shaped grips 11 and 11 are formed at the ends thereof. It is formed. The patterns 1 and 1 cross each other in the middle of the longitudinal direction so as to be substantially X-shaped, and are supported by the first support shaft 12 at the intersecting portions. Further, the second support shaft parallel to the direction perpendicular to the first support shaft 12, that is, the direction connecting the tips of the pair of handles 1, 1, respectively, to the inner side surface position of the tips 1, 1. 13 is pivotally supported. The connector 2 is substantially L-shaped, and the upper portions of the vertical pieces 21 and 21 are brought into contact with the inner side surface of the tip portion of the handle 1 and supported by the second support shaft 13. The horizontal pieces 22 and 22 of the couplers 2 and 2 are bent in the direction from the lower end of the vertical pieces 21 and 21 to the inside of the handles 1 and 1, that is, from one handle 1 to the other handle 1 side. The shape is substantially L-shaped.

  The receiving members 3 and 3 are attached to the horizontal pieces 22 and 22 of the connectors 2 and 2, respectively. That is, the horizontal pieces 22 and 22 are inserted into the upper insertion portions 31 and 31 of the receiving members 3 and 3, screw holes 23 and 23 formed in the horizontal pieces 22 and 22, and screws formed in the receiving members 3 and 3. By passing screws 35, 35 through the holes 34, 34, the horizontal portions 22, 22 of the couplers 2, 2 are fixed to the upper insertion portions 31, 31 of the receiving members 3, 3. Moreover, the horizontal pieces 22 and 22 of the couplers 2 and 2 are connected with the 4th support shafts 5 and 5 via the receiving members 3 and 3 and the 3rd support shafts 4 and 4 as mentioned later.

  The receiving members 3 and 3 have lower attachment portions 32 and 32 below the upper insertion portions 31 and 31 into which the horizontal pieces 22 and 22 are inserted. As shown in FIGS. 1 and 2, the lower mounting portions 32, 32 have a cylindrical shape to receive the third support shafts 4, 4 oriented in the same direction as the blade edge direction. Groove holes 33 and 33 opened in a fan shape along the circumferential direction below the cylindrical body so that the fourth support shafts 5 and 5 projecting downward (orthogonal) from 5 can be rotated (see FIG. 3). ). Note that the connector 2 may be one in which the receiving member 3 is integrally provided on the horizontal piece 22.

  The groove holes 33 and 33 move and guide the fourth support shafts 5 and 5 within the range of the fan-shaped groove when in use. The grass cutter according to this embodiment is configured such that when the user grasps the grip portions 11 and 11 of the handle 1 and 1 and opens and closes the connection tools 2 and 2 that do not rotate in the opening and closing direction (horizontal direction), the second support shaft 13. , 13, the opening / closing of the handles 1, 1 is directly transmitted to the blade bodies 8, 9, enabling direct and smooth opening / closing.

  The fourth support shafts 5 and 5 are each passed through attachment holes 51 and 51 each having an opposite end drilled in the base end portion of the blade bodies 8 and 9, and nuts 52 and 51 are formed on the back surfaces of the blade bodies 8 and 9, respectively. The blade bodies 8 and 9 are pivotally supported by a fifth support shaft 6 parallel to the fourth support shafts 5 and 5 in the vicinity of the center. For this reason, the base end portions of the blade bodies 8 and 9 are respectively connected to the handle 11 via the first support shaft 12, the second support shafts 13 and 13, the third support shafts 4 and 4, and the fourth support shafts 5 and 5, respectively. The blades 8 and 9 are transmitted as an opening / closing operation. The structure in which the blade bodies 8 and 9 are supported on the receiving members 3 and 3 (third support shafts 4 and 4) is configured such that the fourth support shafts 5 and 5 are fixed to the third support shafts 4 and 4, The support shafts 5 and 5 may be rotatable about the blade bodies 8 and 9.

  In the present embodiment, when an axial force acts so as to be twisted between the blades 8 and 9 and the horizontal pieces 22 and 22 during the opening / closing operation of the handles 1 and 1, as shown in FIGS. 3 Opening and closing of the blade bodies 8 and 9 (rotation of the fifth support shaft 6) while eliminating the force applied by the rotation of the support shafts 4 and 4 and the rotation of the fourth support shafts 5 and 5 (Open / close operation is transmitted to the blade bodies 8, 9). The grass cutter has a pivotal support structure in which the blade bodies 8 and 9 are positioned away from the tips of the handles 1 and 1 by the lower attachment portions 32 and 32, so that the blade bodies 8 and 9 and the like have the handles 1, 1 and the like. It is possible to ensure that the third support shafts 4, 4 and the fourth support shafts 5, 5 can be rotated. The second support shafts 13, 13 and the third support shafts 4, 4, and the fourth support shafts 5, 5 do not set the parallel direction as the axial direction, and the third support shafts 4, 4 and the fourth support shafts 5, 5 4 The support shafts 5 and 5 are orthogonal to each other. Moreover, let the 4th support shafts 5 and 5 and the 5th support shaft 6 be a direction parallel to an axial direction.

  As shown in FIGS. 3 and 4, a spacing member is preferably interposed between the lower ends of the lower attachment portions 32, 32 and the blade bodies 8, 9. At this time, a thin spacing member (first spacing member 53a) is provided between the blade body 8 and the lower mounting portion 32 at a position close to the lower mounting portions 32, 32 of the receiving members 3, 3, and the lower mounting portion. A thick spacing member (second spacing member 53 b) in which the thickness of the blade body 8 is added to the dimension between the blade body 9 and the lower mounting portion 32 at a position far from 32 is interposed. For this reason, the force applied to the opening and closing of the blade bodies 8 and 9 becomes equal, and the blade bodies 8 and 9 can be opened and closed smoothly. In the present embodiment, the second spacing member 53b is composed of a plurality of first spacing members 53a, but the second spacing member 53b may be composed of a member different from the first spacing member 53a.

  In the case where the direction of the handles 1 and 1 and the direction of the blade bodies 8 and 9 are connected with a certain angle in the longitudinal direction, the holding portions 11 and 11 of the handles 1 and 1 in the oblique direction are held in a standing posture. By opening and closing, the blade bodies 8 and 9 along the ground can be opened and closed. At this time, in a state where the blade bodies 8 and 9 are closed, the blade bodies 8 and 9 and the horizontal pieces 22 and 22 of the couplers 2 and 2 are maintained in a parallel state.

  However, when the handles 1 and 1 are opened, the connector 2 rotates on a plane centered on the first support shaft 12, and the base end portions of the blade bodies 8 and 9 are planes centered on the fifth support shaft 6. Since the surface rotates, the surface of the horizontal piece 22 and the surfaces of the blade bodies 8 and 9 cannot be kept parallel, and a gap is generated between the two surfaces facing each other in an inclined state. In the present embodiment, even in an inclined state as indicated by a two-dot chain line, the gap (force applied so as to be twisted) is eliminated by the support of the third support shafts 4, 4 and the fourth support shafts 5, 5. The opening / closing operation of the handles 1 and 1 can be smoothly transmitted to the blade bodies 8 and 9 (the blade bodies 8 and 9 can be opened and closed smoothly).

  The second support shafts 13 and 13 pivotally support the couplers 2 and 2 with respect to the handles 1 and 1, but the handles 1 and 1 and the blade bodies 8 and 9 are in a state of a constant angle. By fixing with, the mowing work can be performed without hindrance. Therefore, in the present embodiment, both the left and right second support shafts 13 and 13 are pivotally supported in a state in which the couplers 2 and 2 freely rotate in the vertical direction, and both the left and right or either one of the second support shafts. 13 and 13 are screwed into the adjusting screws 14, and the adjusting screws 14 are tightened at predetermined rotation positions of the handles 1 and 1 and the connecting tools 2 and 2, whereby the handles 1 and 1 and the connecting tools 2 and 2 (blade The bodies 8 and 9) are fixed to prevent loose rotation, so that the mowing work can proceed in a stable state.

  When the grass cutter is going to change the angle formed by the handles 1 and 1 and the blades 8 and 9 according to the physique and preference of the operator, the blades 8 and 9 are rotated by loosening the adjusting screws 14. The handle 1, 1 and the blades 8, 9 are maintained at a desired angle by tightening the adjusting screw 14 at a preferred rotation position. In the present embodiment, the adjustment screw 14 is provided on one handle 1, but may be provided on both the handles 1 and 1.

  For example, the grass cutter has an operator in a standing posture holding the handles 1 and 1 diagonally downward from the position where the blades 8 and 9 and the handles 1 and 1 indicated by solid lines in FIG. 5 are supported linearly. Thus, the blades 8 and 9 as indicated by the two-dot chain line can be adjusted to an angle α in which the blades 8 and 9 are oriented in the horizontal direction and used for work. Therefore, the adjustment screw 14 can be loosened and adjusted to the optimum angle α depending on the physique and height of the operator. When finishing the work or storing or transporting, as shown in FIG. 6, the angle α is set to zero, that is, the blade bodies 8 and 9 are rotated to the handle 1 and 1 side to be parallel to the handles 1 and 1. By folding back so as to line up with each other, the blades 8 and 9 can be safely stored by preventing contact with the handles 1 and 1, and can be handled safely even when carried.

  When the tip of the blades 8 and 9 is brought close to the handles 1 and 1 to switch to the stored state, or when the state is switched from the stored state to another state, the lower mounting portion 32 causes the blades 8 and 9 and the handles 1 and 1 to By inserting a hand into the space formed between them and applying a finger to a side other than the side end having the blade such as the surface of the blade body 8, the blade bodies 8 and 9 can be safely grasped and the blade bodies 8 and 9 can be supported. Further, the protective cover can be easily attached to and detached from the blade bodies 8 and 9 depending on the space.

  A hemispherical slide piece 61 is fixed to the back surface of the blade body 9 at a position far from the horizontal pieces 22 and 22 by the fifth support shaft 6. By providing the sliding piece 61 for grounding on the back surface side of the blade bodies 8 and 9, the operation can proceed while smoothly moving the blade bodies 8 and 9 during the mowing operation. At this time, the cutting position of the grass by the blades 8 and 9 is the height position of the thickness of the sliding piece 61 from the ground, and the grass cutting operation can be performed with a certain height.

  The grass cutter has horizontal pieces 22, 22 (receiving members 3, 3) projecting inward from the tips of the handles 1, 1, so that if the handles 1, 1 are closed too much, the receiving members 3, 3, etc. May collide. In the present embodiment, in order to prevent the blade from being closed too much, the blade is fixed at a fixed position of one of the pair of blades, and is engaged with either one of the blades to be in a certain angle range of the pair of blades. A closing limit stopper 62 is provided to prevent closing below the lower limit. The closing limit stopper 62 is fixed at a position on the handle inner side of the base end portion of one blade body 8, and is suspended from the back surface of the blade body 8 toward the rotation plane of the blade body 9. , Limit closing below the lower limit of the constant angle range of 9.

  In order to prevent the grass cutter from opening too much, it is fixed at a fixed position of one of the pair of blades, and is engaged with either one of the blades within a certain angle range of the pair of blades. An opening limit stopper 63 is provided to prevent the opening exceeding the upper limit. The opening limit stopper 63 is passed through the fifth support shaft 6 to be positioned and fixed on the surface of the blade body 8, and its side end is suspended from the side end of the blade body 8 toward the rotation plane of the blade body 9. By setting, the opening beyond the upper limit of the fixed angle range of the blade bodies 8 and 9 can be limited.

DESCRIPTION OF SYMBOLS 1 ... Handle, 2 ... Connection tool, 3 ... Receiving member, 4 ... 3rd support shaft, 5 ... 4th support shaft, 6 ... 5th support shaft, 8, 9 ... Blade body, 12 ... 1st support shaft, 13 2nd support shaft, 21 ... Vertical piece, 22 ... Horizontal piece, 31 ... Upper insertion part, 32 ... Lower attachment part, 33 ... Groove hole, 51 ... Installation hole, 62 ... Close limit stopper

Claims (3)

A crossing portion of the pair of handles crossed is pivotally supported by the first support shaft, and is substantially L-shaped at the front end portion inner position of the pair of handles and the horizontal piece is directed inward. The vertical piece portion of the connector is pivotally supported by the second support shaft in the direction connecting the tips of the pair of handles,
A fourth support shaft parallel to the fifth support shaft is provided at each of the base ends of the pair of blades that are pivotably supported by the fifth support shaft,
The fourth support shafts provided at the base ends of the pair of blade bodies are pivotally connected to the horizontal piece of the connector by third support shafts orthogonal to the fourth support shaft, respectively. Mowing mower with standing posture. The connection of the fourth support shaft to the horizontal piece uses a third support shaft fixed orthogonally to the fourth support shaft and a receiving member,
The receiving member includes an upper insertion portion for inserting and fixing a horizontal piece, and a groove hole formed in a fan shape below the fourth support shaft so as to be rotatable in the horizontal direction.
The grass cutter according to claim 1, wherein one end of the fourth support shaft is guided through the slot and is rotatably provided. A closing limit stopper that is fixed to a fixed position of one of the pair of blades and engages with the other blade to prevent the pair of blades from closing below a lower limit of a certain angle range. Prepared,
The closing limit stopper is fixed at a position facing inward of a base end portion of one blade body, and is provided to be suspended from the one blade body toward a rotation plane of the other blade body. The mower according to claim 1 or 2.

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