JPS62265915A - Reel of reaper - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is directed to attaching a prime mover to the proximal end of a long auxiliary pipe, and attaching a rotating body to the distal end via a gear housing. The present invention relates to a reel for winding a cord in a brush cutter that uses the centrifugal force of the derived cord when a rotating body rotates to cut grass, etc.

[Prior art and problems]

The present applicant previously proposed the brush cutter shown in Figure 2 (Japanese Patent Application No. 119248/1983, filed on May 24, 1985).
.

That is, a cord 4 is wound around the output shaft 1 in a rotary body 2 driven by a prime mover via an output shaft 1 so as to be rotatable and slidable in the axial direction and biased downward by a coil spring 3. A reel 5 is provided, and serrated stepping pawls 6 and 7 are provided, which face the upper flange 5a of the reel 5 and the inner wall of the upper case 2a of the rotating body 2, respectively, and rotate the reel 5 in the direction of loosening the winding of the cord. At the same time, uneven parts 8 and 9 having tapered surfaces for engagement are provided facing the lower flange 5b of the reel 5 and the inner wall of the lower case 2b of the rotating body 2, respectively, and the rotating body 2 is provided at the lower part of the reel 5. A pressing part 10 is provided that protrudes from the lower surface of the lower case 2b of the cord 4. When feeding out the cord 4, the operation of the brush cutter is stopped and the pressing part 10 is pressed against the ground, etc., and the reel 5 is moved to the coil. The reel 5 rises against the spring 3 and disengages the concave and convex portions 8, 9, and by the cooperative action of the stepping claws 6, 7, the reel 5 automatically rotates in steps in the direction of loosening the winding of the cord. When the cord 4 stops and is released from the ground and resumes operation, the loosened portion of the cord 4 is automatically fed out by the centrifugal force of the rotation of the reel 5.

The upper case 2a is fixed to the output shaft 1, and 2 (II) locking holes 2a+ are provided in the outer peripheral side wall of the upper case 2a, diametrically opposed to each other.

Further, the locking hole 2 is provided in the outer peripheral side wall of the lower case 2b.
Two locking pawls 2bl that engage and disengage from a+ are provided, and the lower case 2b is removably attached to the upper case 2a by engaging and disengaging the locking pawls 2b+ to and from the locking hole 2a+.

Therefore, the rotation of the output shaft 1 is transmitted to the upper and lower cases 2a, 2b and the reel 5.

Further, reference numeral 11 denotes an eyelet for leading out a cord, which is fitted onto the outer peripheral side wall of the upper case 2a so as to face each other in the diametrical direction thereof.

As described above, although the brush cutter allows the cord 4 to be easily and reliably fed out, it has been found that there are the following problems.

The cord 4 is wound around a loop 5 formed of a cross-sectional shape consisting of an upper flange 5a, a lower flange 5b, and a body 5C, and the cord 4 is made of synthetic resin such as a diameter of 21 m, 2.4 fins, and 3 dragons. The cord 4 is connected to the rotating body 2 due to its strong elasticity.
If one wire is applied in the diametrical direction and derived (Code 4
is bent into a U-shape from the center of the entire length, and the bent part is fixed to the body 5c of the reel so that the two cords are wound in the same direction), and the two cords intersect and are automatically fed out. damage to the smoothness of

This also applies to the case where one cord is derived from the rotating body 2.

In addition, as shown in FIG. 3, the upper and lower flanges 5
A plurality of notch grooves 5a+ are formed on the outer peripheral edges of a and 5b.

5bl is provided, and the end of the wound cord 4 is inserted into the notched groove 5at.
, 5tz to prevent the cord 4 from unraveling (to facilitate installation into the rotary body 2), the notch grooves 5a+,
5b+ is troublesome and lacks speed.

[Technical means to solve problems]

The present invention provides a plurality of notched grooves for locking the ends of the winding cord on the outer peripheral edge of each of the upper and lower flanges of the reel installed in the rotating body, and provides a plurality of grooves for locking the ends of the wound cord between the upper and lower flanges of the reel. An intermediate partition plate is provided that is loosely fitted in the section, and the movement of the intermediate partition plate changes the space capacity according to the volume of the wound cord. It is tilted to make locking work easier.

〔Example〕

Embodiments of the present invention will be described with reference to the drawings.

The difference between the present invention and the conventional example shown in FIGS. 2 and 3 lies in the structure of the reel.

Note that the same parts as in the conventional example are given the same reference numerals.

As shown in FIG. 1, the reel 5 is made of synthetic resin material.
It has an upper flange 5a, a lower flange 5b, and a body 5c, and has an intermediate partition plate 5d loosely fitted to the body 5c between the upper and lower flanges 5a and 5b.

Further, on the outer peripheral edge of each of the upper and lower flanges 5a and 5b, there are a plurality of notched grooves 5a+ whose width is slightly narrower than the diameter of the cord 4.
5bt is formed.

Note that 5e indicates an annular groove into which one end of the coil spring 3 is fitted, and 10 indicates a pressing portion.

Therefore, each cord 4 with a full-length central bent portion fixed to the body 5C of this reel 5 is wound in the same direction between the upper flange 5a and the intermediate partition plate 5d, and between the lower flange 5b and the intermediate partition plate 5d. Turn each end of each end into the notches a5 at, 5 of each upper and lower flanges 5, a, 5 b.
If it is forcibly retracted into bt, each notch a5 a
Since the width of t and 5 bt is formed slightly smaller than the diameter of the cord 4, each end of the cord 4 has a notch groove 5a.
+, 5b+, to prevent unwinding.

In this locking, the end of the cord is pulled upward or downward. For example, when pulling upward to lock in the notch groove 5a1, the cord is wound between the upper flange 5a and the intermediate partition plate 5d. Since the cord pressed against the intermediate partition plate 5d causes the partition plate 5d to be tilted, locking can be easily performed.

The same applies when locking to the notch/7115b1.

In addition, when winding one cord 4 (leaving one cord from the rotating body 2), it is wound between the lower flange 5b and the intermediate partition plate 5d, but in this case, the cord end The intermediate partition plate 5d is also inclined when it is to be engaged in the notch groove 5a+ or 5b+, making the engagement process easier.

Therefore, as described above, when the coats 4 having different lead-out directions are divided and wound on the upper and lower sides of the intermediate partition plate 5d, the winding volume of each cord 4 is equalized by the intermediate partition plate 5d. Thus, each cord 4 is automatically fed out smoothly.

In addition, when performing mowing work with two lead-out cords 4, each cord 4 may not be worn out equally, but in this case also, the intermediate partition is divided according to the difference in the winding volume of each cord 4 after automatic feeding. The plate 5d moves. Therefore, the winding space capacity of each cord changes and the winding state of the cord is optimized, so that the smoothness of subsequent automatic feeding is not affected in any way.

In addition, even in the case of one lead-out cord, the cord winding space capacity can be optimized by moving the intermediate partition plate 5d, and the winding state of the cord can be adapted to automatic feeding.

〔effect〕

The present invention has the following effects.

Since the reel has a movable intermediate partition plate, (al
Cords with different lead-out directions are wound separately on the upper and lower sides of the intermediate partition plate, so that there is little crossing over of the cords, and automatic feeding can be performed smoothly.

(bl) The intermediate partition plate moves according to the volume difference between the winding cords, so that the winding space capacity of each cord can be optimized, and the smoothness of automatic feeding can be maintained.

(C) When locking the end portion of the wound cord in the notch groove of the flange, the intermediate partition plate is inclined, and the locking operation can be easily performed.

[Brief explanation of drawings]

FIG. 1 shows an embodiment of the reel according to the present invention, and FIG.
) is a plan view, the same figure (B) is a cross-sectional view of (A), and the second
3 are cross-sectional views of a conventional brush cutter and reel. 2... Rotating body, 4... Cord, 5... Reel, 5
a... Upper flange, 5b... Lower flange 5 cm
Body part, 5d... intermediate partition plate, 5a+, 5b+... notch groove.

Claims (1)

[Claims] A plurality of notched grooves for locking the ends of the wound cord are provided on the outer peripheral edge of each of the upper and lower flanges of the reel installed in the rotating body, and the body of the reel is loosely fitted between the upper and lower flanges. A reel for a brush cutter, characterized in that it is provided with an intermediate partition plate.