JPS638182Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a structure for attaching a clipper blade to a tea leaf trimmer for plucking, trimming, or pruning tea leaves.

Clipper-type tea branch and leaf trimmers have become extremely popular in recent years due to their good cutting action and light weight.

However, the conventional clipper blade mounting structure is
As shown in the figure, insert the truss screw a into the upper blade b and lower blade c.
into the long hole d of the guide plate e, and then insert it into the screw hole f of the guide plate e.
The blade was screwed in while adjusting the gap between the blades, and then a nut g was tightened on the threaded part protruding from the guide plate, making it double-tightened, so it was easy to disassemble and reassemble during manufacturing, sharpening, and repair. In this case, all the truss screws had to be tightened and removed, and the gap between the blades of all the truss screws had to be adjusted, which took up a lot of man-hours.

Also, since the nut g protrudes above the guide plate e,
It was getting in the way of storing the cut leaves. This point is often overlooked as the thickness of the nuts is only 4 to 5 mm, but as the cut leaves get caught here and gradually accumulate, tea farmers are very concerned about the appearance of the nuts. This can be nerve-wracking and the cut leaves can be damaged by the corners of the nut, so even when the machine is manufactured, the orientation of the hexagonal sides of the nut is specified.

It has been pointed out for some time that the nuts protruding onto the guide plate are an impediment to storing grass clippings, but the current situation is such that the truss screw must be removed when repairing or replacing the cutting blade. It was not resolved for this reason.

The present invention was developed in view of these circumstances, and it simplifies the mounting structure of the upper and lower blades, making it easier to
In addition to reducing man-hours during repairs, etc., by making it possible to attach and detach the cutting blade without removing the truss screw, etc., it is possible to fix the truss screw, etc. to the guide plate. This allows the cutting blade to be repaired or replaced without the need for protruding parts such as the above.

Next, an illustrated embodiment in which the present invention is applied to a two-person portable pruning machine will be described.

Reference numeral 1 denotes a guide plate to which a joining part 3 of a reinforcing frame 2 formed in an arc shape on the upper surface of a brown ridge is attached, and the upper surface is flat without any protruding part, and the lower surface has a guide plate having a joint part 3 attached thereto. A large number of collar pins 4 are protruded from appropriate locations, and their bases 5 are fixed to the gear case 6.

Reference numeral 7 denotes an eccentric shaft which is rotatably supported by the gear case 6 and rotationally driven by the engine 8 via an appropriate speed reduction mechanism, and 9 is a rod which transmits the eccentric movement to the upper blade 11 and the lower blade 12. 10 is a rod 9 for reciprocating the upper blade 11 and the lower blade 12 from side to side, and the upper blade 11 and the lower blade 1.
The two drive shafts are pivot points and protrude toward the sides facing each other.

The upper blade 11 and the lower blade 12 have an elongated hole 14 with a notch 13 formed at the corresponding location of the flanged pin 4, and a connecting rod 15 that engages with the drive shaft 10 is formed at the base end. 13 corresponds to the flanged pin 4 of the guide plate 1, the connecting groove 15 corresponds to the drive shaft 10 in the gear case 6, and the entire guide plate 1 is slid in the front-rear direction along each notch 13.
It is combined with

16 is the lid of the gear case, and the upper blade 11 and lower blade 12
A regulating plate 17 is fixedly installed at a location corresponding to the base of the upper blade 11 and the lower blade 12. prevent movement.

18 and 19 are handles on both sides, and 20 is a stabilizing plate extending from the reinforcing frame 2.

Therefore, if engine 8 is started, engine 8
The rotation of is transmitted to the eccentric shaft 7 via a reduction mechanism (not shown), and the rod 9 moves eccentrically, so that the upper blade 11 and the lower blade 12 are controlled by the regulating plate 17, the flanged pin 4, and the elongated hole 14. , and is guided in its direction of motion and reciprocated left and right.

When two workers hold the handles 18 and 19 facing each other and move the machine along the upper surface of the tea ridge, the cutting action of the upper blade 11 and the lower blade 12 performs pruning.

At this time, since there is no protrusion on the guide plate 1, there is no possibility that the cut leaves will get caught.

In addition, in the case of a pruning machine, there is no need to store the cut leaves, and it is sufficient to simply guide the pinched branches and leaves between the tea furrows, but there is a need for a wind blower, etc. to send the pinched branches and leaves backwards. Since no special sending device is attached, there is no catch on the guide plate 1, which naturally makes the pruning work extremely smooth.

Although not shown, in the case of a plucking machine that stores cut leaves, the storage can be done smoothly and reliably using a wind blower, etc.
Unlike conventional tea leaves, they do not get caught in the nut part and the tea leaves are not damaged by the corner of the nut.

Next, if the blade edge has become rounded after long-term use and needs to be sharpened, or if the blade edge is chipped and needs to be replaced, first remove the gear case lid 16, then remove the upper blade 11 and lower blade. Notch 1 of long hole 14 of 12
3 corresponds to the collared pin 4, and if you slide this as it is in the front and back direction along the notch 13,
The engagement of the flanged pin 4 from the elongated hole 14 is in the connecting groove 15.
The drive shafts 10 are disengaged from each other, and the upper blade 11 and the lower blade 12 are completely separated from the guide plate 1.

Therefore, after performing necessary measures such as sharpening the blade, in order to reinstall it, the notch 13 of the long hole 14 of the upper blade 11 and the lower blade 12 and the connecting groove 15 in the opposite manner to the removal, and after sliding them in the front and back direction, move the regulating plate 17 between the upper blade 11 and the lower blade 12.
If the lid 16 of the gear case is attached while fitting the front and rear parts of the base of the gear case, the gear case can be completely assembled to its original state.

At this time, the installation and removal of the upper blade 11 and the lower blade 12 is done by simply installing and removing the cover 16 of the gear case and sliding the upper blade 11 and the lower blade 12, so you can remove the truss screw one by one as in the conventional case. There is no hassle of re-tightening. Furthermore, the gap between the blades can be adjusted by simply engaging the flanged pin 4 with the elongated hole 14, and anyone can easily restore the best gap as specified.

In the above example, movement of the upper blade 11 and the lower blade 12 in directions other than the left and right directions was prevented only by the regulating plate 17, but the notched elongated hole 14 and the flanged pin 4 at the other ends of the upper blade 11 and the lower blade 12 If only one set of 2 is tightened using the conventional long-hole truss screw, the upper and lower blades 11 and 12 will be reliably prevented from moving in any direction other than left and right at both ends. The burden added to the system can be reduced.

In the above-mentioned embodiment, the upper blade 11 and the lower blade 12 are driven back and forth from side to side via the rod 9, but the eccentric shaft 7 is directly connected to the upper blade 11 and the lower blade 12 without using the rod 9. Of course, it can be applied in the same way even if they are combined.

In this invention, the upper and lower blades can be freely engaged and detached from the guide plate and drive shaft, so there is no need to remove truss screws, etc. as in the past, and the man-hours during manufacturing and repair are significantly reduced. At the same time, it is also possible to make the upper surface of the guide plate flat.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing the conventional mounting method, Figure 2
Figure 3 shows an embodiment of the present invention.
The figure is a plan view thereof, and FIG. 3 is a perspective view of the main part. 1... Guide plate, 4... Pin with collar, 10...
Drive shaft, 11... Upper blade, 12... Lower blade, 13...
Notch, 14... long hole, 15... connecting groove.

Claims (1)

[Scope of utility model registration request] In a tea leaf mower that clips tea leaves by overlapping a comb-shaped upper blade and a lower blade and making left and right reciprocating movements, approximately T-shaped notches are provided at appropriate intervals on the trailing edges of the upper blade and the lower blade. In addition to forming an elongated hole, a connecting groove is formed at the base end in the same direction as the notch, a guide plate with a flat upper surface is provided above the upper blade and the lower blade, and the lower surface of the guide plate is provided with a connecting groove in the same direction as the notch. A pin with a flange is provided protruding at the location corresponding to the notch, and a drive shaft that reciprocates left and right is provided in the direction of the base end of the upper and lower blades, a notch is provided on the pin with a flange, and a connecting groove is provided on the drive shaft. A clipper blade mounting structure for a tea leaf trimmer in which the upper and lower blades can be slid back and forth to engage and detach from the guide plate and drive shaft.