JPS6222128Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to lawn shears.

2. Description of the Related Art Conventionally, lawn shears for mowing and maintaining lawns have been known, in which the cutting angle can be changed by rotating the blade part about its horizontal axis relative to the handle part. However, the structure and mechanism for rotating and fixing the device around a horizontal axis were extremely complex, making manufacturing troublesome and causing many failures. In particular, in order to switch the rotation of the blade body corresponding to horizontal mowing, diagonal mowing, and vertical mowing of the lawn, the protruding pin body must be operated with a finger, making it impossible to quickly switch the rotation. Conventional blades had the disadvantage of being extremely difficult to use, as the blade had to be rotated frequently when mowing around the edge of a lawn or near a fence or plants.

The present invention solves all the shortcomings of conventional lawn shears, simplifies the structure, facilitates manufacturing, reduces costs, and reduces malfunctions, especially when mowing the edges of lawns. To easily and quickly change the angle of inclination of a blade body.

Hereinafter, the present invention will be explained in detail based on the illustrated embodiments.

Reference numeral 1 designates a handle, and reference numeral 2 designates a blade body.The handle 1 has an upper fixed handle 3 and a lower movable handle 4, and the tips of both handles 3 and 4 are pivoted to each other by a shaft 5. Further, 6 is an L-shaped end fitting, which is fixed to the fixed handle 3 with screws 7, etc., and a recess in the gap between the end fitting 6 and the front part 8 of the fixed handle 3. A spacer 9 made of plastic or the like is interposed and fixed. A portion of this spacer 9 is fitted into the notch 10 of the tip fitting 6, and the portion and the tip fitting 6 form the tip vertical end surface 11 of the handle portion 1.

The blade body part 2 has a lower fixed blade 12 and an upper movable blade 13 pivotally connected to each other by a shaft 14 so as to be openable and closable, and the base end of the fixed blade 12 is bent vertically to form a base vertical end surface. form 15. Holes 17 and 18 are formed through the vertically bent bent piece 16 and the vertical piece 6a of the tip fitting 6, so that the holes 17 and 18 correspond to each other, and both the vertical end faces 11, 15 are brought into contact with each other, and a flanged short cylindrical support shaft 19 is inserted into both holes 17 and 18, thereby connecting both vertical end surfaces 11 and 15 so that they can rotate and slide freely around the horizontal axis H. . That is, the handle 1
and the blade body 2 are interconnected by a short cylindrical support shaft 19 with a flange, and the blade body 2 is rotatable around the horizontal axis H relative to the handle 1.

Reference numeral 20 denotes an interlocking rod that connects a part of the movable handle 4 and a part of the movable blade 13, and is inserted into the hole of the support shaft 19, and the rear end is connected to the movable handle 4 by a screw connection. It is connected near the shaft 5, and its tip is bent and connected to the transverse protrusion 21 of the movable blade 13.

Thus, a plurality of locking holes 22 are provided at a predetermined circumferential pitch in the bent piece portion 16 forming the proximal vertical end surface 15 of the blade portion 2. Further, as shown in FIG. 2, the spacer 9 forming the vertical end face 11 of the handle 1 has a spring chamber 23 with a front opening and a blind hole, and a coil spring 24 is housed in the inner part. A sphere 25 is housed in the front opening and elastically pressed forward by the coil spring 24. Then, the blade part 2 is rotated around the horizontal axis H to selectively engage the sphere 25 with one of the plurality of locking holes 22, as shown in FIG.
The blade portion 2 is held at a predetermined angle around the horizontal axis H, as shown in FIG. Of course, there is a sphere 25 in the middle of rotation switching.
is in pressure contact with the proximal vertical end surface 15 while rolling.
As soon as the spring chamber 23 and the predetermined locking hole 22 come to a position facing each other, the sphere 25 engages with the locking hole 22 by the elastic urging force of the coil spring 24.

In addition, Fig. 3 shows a state in which the lawn is mowed horizontally, and the same figure shows a state in which the lawn is mowed diagonally and vertically, which are convenient for mowing the edges of the lawn. 45 in the example
Three locking holes 22 are provided at a certain pitch,
It is also possible to further increase this so that it can be rotated by 90 degrees left and right, or to be able to change the rotation in even smaller angular pitches.

As described above, the present invention has a distal end vertical end surface 11 formed by the front surface of the vertical piece portion 6a of the distal end fitting 6 provided on the fixed handle 3 of the handle portion 1, and a proximal end vertical end surface 15 of the blade body portion 2. The handle part 1 and the blade body part 2 are connected to each other by being rotatable and slidable around the horizontal axis H, and the vertical piece part 6a of the tip fitting 6 of the handle part 1 is connected to the fixed part. A spacer 9 is embedded and fixed in the recess between the handle 3 and the front surface 8, and the spacer 9 protrudes from the bent piece 16 of the blade body 2 when viewed from the front. The spacer 9 includes a coil spring 24 and a sphere 25 that is resiliently pressed forward by the coil spring 24.
A spring chamber 23 for accommodating the spring chamber 23 is recessed, and a plurality of locking holes 22 are provided at a predetermined circumferential pitch on the proximal vertical end surface 15 of the blade portion 2.
The blade portion 2 is rotated around the horizontal axis H to selectively engage the sphere 25 with the locking hole 22 so that it is held at a predetermined angle around the horizontal axis H. It is composed of That is, the coil spring 24 and the sphere 25 for holding rotation switching are inserted into the spacer 9 embedded in the recess between the vertical piece 6a of the end fitting 6 and the front surface 8 of the fixed handle 3. By providing this, the locking portion can be made into an extremely compact shape and will not get in the way during work. Further, since the locking mechanism for rotation switching is not exposed to the outside and does not have a protruding part, there is no risk of premature damage due to scratching by grass leaves or roots, and there is an advantage of a long life. Furthermore, since this spacer 9 does not protrude from the bent piece portion 16 when viewed from the front, it will not be scratched by leaves or roots of the lawn. Furthermore, since the front surface part 8 of the fixed handle 3 and the vertical piece part 6a are firmly connected by the spacer 9, the rigidity of the vertical piece part 6a, which directly receives the acting force from the blade part 2, is extremely increased. This has the advantage of

As described above, according to the present invention, the handle 1 can be
By grasping the closed blade body part 2 with the other hand, frequent rotation switching can be performed quickly and without fatigue. In other words, it is not necessary to operate the rotation switching holding part with fingers at all.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a plan view, FIG. 2 is a cross-sectional view taken along the line A-A in FIG. 1, and FIG. The BB sectional view and FIGS. 4 and 5 are perspective views showing horizontal mowing and vertical mowing, respectively. DESCRIPTION OF SYMBOLS 1... Handle part, 2... Blade part, 11, 15... Vertical end surface, 22... Locking hole, 23... Spring chamber, 24... Coil spring, 25... Sphere.

Claims (1)

[Scope of utility model registration request] The tip vertical end surface 11 formed by the front surface of the vertical piece portion 6a of the tip fitting 6 provided on the fixed handle 3 of the handle portion 1 is made to correspond to the base end vertical end surface 15 of the blade body portion 2, so that it is horizontal. It connects the handle part 1 and the blade part 2 so as to be rotatable and slidable around the axis H, and
A spacer 9 is embedded and fixed in the recessed space between the vertical piece 6a of the end fitting 6 of the handle 1 and the front surface 8 of the fixed handle 3, and the spacer 9 is seen from the front. The spacer 9 is formed so as not to protrude from the bent piece portion 16 of the blade portion 2, and the spacer 9 includes a spring for housing a coil spring 24 and a sphere 25 that is resiliently pressed forward by the coil spring 24. The chamber 23 is formed as a blind hole with a front opening in a direction parallel to the horizontal axis H, and the chamber 23 is formed as a blind hole with a front opening in a direction parallel to the horizontal axis H, and
A plurality of locking holes 22 with a predetermined circumferential pitch are provided in the proximal vertical end surface 15 of the holder, and a plurality of locking holes 22 are provided on the inner diameter side by a predetermined distance from the outer peripheral edge. The chamber 23 is not exposed to the outside, and the sphere 25 is connected to the locking hole 22.
The coil spring 24 and the sphere 25 are covered with the spacer 9 and the bent piece part 16 so that they are slightly exposed at the inner part of the blade part 2, and the blade part 2 is aligned with the horizontal axis H. The sphere 25 rotates around the
The lawn shears are configured to be selectively engaged with the locking holes 22 and held at a predetermined angle about the horizontal axis H.