JPS5810702Y2 - Handle tightening device for tiller - Google Patents

Description

[Detailed Description of the Invention] The present invention mainly relates to a tightening device for a knob in a small-sized tiller.

Conventionally, in this type of device, a pair of left and right legs extending downward from the handle body can be fastened to both sides of a column holder extending upward from the rear of the cultivator body via adjustment bolts, and the handle body can be folded by loosening the bolts. There are known cases where the bolts can be pulled out when folded.

In order to solve this inconvenience, the present invention aims to make the 71 handle foldable by loosening the bolt and to prevent the bolt from being pulled out carelessly. A pair of left and right leg pieces 4゜4 connected via a shaft 9 are mounted on both sides of a column holder 10 which extends upward from the rear of the tiller body and has a receiving groove 10 for supporting the horizontal shaft 9. The adjustment bolt of the column holder 1 is tightened through an adjustment bolt 6 that is inserted from one side and screwed to the label 5 provided on the other side of the leg piece 4 in a knob tightening device for a tiller. A guide groove 8 in which an insertion hole is formed as a long hole 2 in the vertical direction, and a stopper nut 7 to which the adjustment bolt 6rC is screwed is slidably fitted into the opening of the signboard 5 of the long hole 2.
It is characterized by the formation of

The adjustment bolt 6 extends to the other side through the bolt hole 4a of the leg piece 4 on one side, and has a head 6a that expands at one end and a spiral portion 6b that expands at the other end. It is screwed into a nut constituting the above-mentioned sign plate 5 which is fixed to the leg piece 4 of the.

The stopper nut 7 on the inner side has a substantially rectangular shape, and is fitted into a vertical guide groove 8 formed on the opposite side surface of the elongated hole 2 and supported so as to be slidable along this. I made it.

Further, the handle body 3 is provided with a horizontal shaft 9 located near the upper ends of the leg pieces 4, 4, and the column holder 1 is provided with a receiving groove 10 located at its upper end and opened upward. According to the motion, the horizontal shaft 9 escapes upward from the receiving groove 10 as shown by the chain line in FIG. was made permissible.

Furthermore, in the illustrated example, the elongated hole 2 is constructed of a cylindrical body made of a metal plate, and this is connected to the head 6a of the adjustment bolt 60.
A step 11 is formed on the end surface of the bolt 6, which protrudes slightly to the side and engages with the port 60 when it is in the lowered position. Its upward movement is now restricted.

To explain its operation, the handle body 3 is normally in the downward movement position as shown by solid lines in FIGS. In this way, the handle body 3 remains fixed and protrudes upward, but in order to fold it next time, the bolt 6 is
The handle body 3 is moved upward by loosening the handle body 3 more or less.
Considering this loosened state, the bolt 6 escapes from the sign plate 5 as shown in Fig. 4, but since there is a stopper nut 7 inside the bolt 6, its tip side is supported by the stopper nut 7, so that it may tilt inadvertently. There is no problem and no further withdrawal, and thus the bolt 6 remains stable in its loosened state, ready for subsequent tightening.

Fig. 5 shows a modification of this, in which the leg pieces 4, 4 are gradually made wider downward, and bolt holes 4a are arranged in three stages, so that the mounting angle position can be adjusted. .

In this way, according to the present invention, the pair of left and right leg pieces 4, 4 extending downward from the handle body 3 are fastened to both sides of the column holder 1 extending upward from the cultivator body via adjustment bolts 6, Since the adjustment bolt insertion hole of the column holder 1 is formed in the elongated hole 2 in the vertical direction, the handle body 3 can be moved into the elongated hole 2 by loosening the bolt 6 to facilitate folding. 2 has a nut guide groove 8 formed on its label side, and a stopper nut 7, which is screwed onto the bolt 6, is slidably fitted into the guide groove 8, so that when the bolt is loosened, the bolt 6 is It slides up and down in a state where extraction is stopped, which has the effect of preventing accidental extraction.

[Brief explanation of the drawing]

Figure 1 is a partially cutaway plan view of one example of the proposed device;
Figure 3 is a cutaway side view of the same, Figure 3 is a sectional view taken along the line ■-■ in Figure 1, Figure 4 is a cutaway plan view of a part of the operating state, and Figure 5 is a side view of a modified example. . 1... Column holder, 2... Long hole, 3
...Handle body, 4,4...Leg piece,
5... Label plate, 6... Adjustment bolt, 7... Stopper nut, 8... Guide groove.

Claims (1)

[Scope of utility model registration request] A column holder having a pair of left and right leg pieces 4, 4 extending downward from a handle body 3 and connected via a horizontal shaft 9, and having a receiving groove 10 extending upward from the rear of the tiller body and supporting the horizontal shaft 9. In a tightening device for a handle in a tiller, which is tightened through an adjustment bolt 6 that is inserted into a leg piece 4 from one side of the leg piece 4 and screwed into a sign plate 5 provided on the other side of the leg piece 4. The adjustment bolt insertion hole of the column holder 1 is formed as a long hole 2 in the vertical direction, and a stopper nut 7, which is screwed onto the adjustment bolt 6, is slid into the opening of the long hole 2 on the side of the label plate 5. Guide groove 8 that can be fitted freely
A tightening device for a handle in a tiller, characterized in that it is formed with a.