JPH0442990Y2 - - Google Patents

Description

[Detailed explanation of the idea] B. Purpose of the invention [Industrial application field] The present invention relates to a riding lawn mower.

[Conventional technology]

In this type of lawn mower, a cutting deck is placed at the lower center of the machine body, and the grass cut by the rotary cutting blade in the cutting deck is sent from the outlet provided at the rear of the cutting deck to the back and forth direction between the left and right rear wheels. It is known that the grass is collected through a duct provided to a blower located at the rear lower part of the aircraft body, and from the blower, passes through a shooter, and is collected in a grass bag located at the rear upper part of the blower (for example, US Pat. No. 4,345,416). (see book).

[Problem that the invention attempts to solve]

However, in the above-mentioned known example, the blower is arranged with its rotation axis in the front-rear direction, and the duct is arranged in the front face of the approximately cylindrical blower case, that is, in the direction perpendicular to the rotation direction of the impeller inside the blower case. Since the turf is connected to the duct, especially when the turf is heavy and contains a lot of moisture, the flow is poor and there is a risk that the turf may become clogged in the duct or blower. In addition, removing the grass that is clogged in the duct or blower is very troublesome because the duct is located at the bottom of the machine between the rear wheels, and the communication port with the blower duct opens forward. There were some problems.

The present invention aims to solve the above problems.

B. Structure of the invention [Means for solving the problem] The present invention has a cutter deck 2 disposed approximately at the lower center of the machine body 1, and a rotary cutting blade 3 inside the cutter deck 2.
The cut grass is guided from the discharge port 2a provided at the rear of the Katsutadetsuki 2 through a duct 5 provided in the longitudinal direction between the left and right rear wheels 4, 4, to a blower 6 placed at the rear lower part of the machine. In a riding lawn mower that is stored in a grass bag 8 placed behind and above the blower 6 via a shutter 7 from the blower 6, the blower 6 is attached to the rear lower part of the machine body with its rotating shaft 61 facing in the width direction of the machine body. , an opening 6a for communication with the duct 5 is provided on the lower surface of the substantially cylindrical case of the blower 6, and both side surfaces 6 of the cylindrical case 60 are provided.
A duct 5 which overlaps the side surface of the duct and covers the opening 6a on the lower surface of the case and extends forward in a substantially tangential direction with respect to the rotation locus of the blower impeller is attached to the blower 6 in a detachable and vertically tiltable manner. Connect the front part of the cutter deck 2 to the outlet 2a.
The duct 5 is inserted into and removed from the duct 5 at a locking part such as a pin 26 for preventing slippage provided on the stub deck 2.
A presser foot such as a presser plate 8 that engages an engaging portion such as a notched recess 27 provided in the duct 2, and maintains the state in which the cutter deck 2 and the duct 5 are fitted with each other while allowing the vertical movement of the cutter deck 2. It is characterized by comprising a member.

[Effect]

The grass cut by the rotary cutting blade 3 in the shaving deck 2 is transferred into the blower 6 through the duct 5 due to the air suction force generated by the rotation of the impeller in the blower 6 and the wind pressure caused by the rotation of the cutting blade 3 in the shaving deck 2. After being guided in the tangential direction, the grass passes through the shooter 7 and is stored in the grass bag 8 by the bouncing force of the impeller in the blower 6 and the wind pressure.

Katsutadetsuki 2 to adjust the mowing height of the lawn
When moving up and down, the fitted state of the katatsu deck 2 and the duct 5 is maintained by the presser member, and the duct 5 is tilted at the attachment point to the blower 6, allowing the up and down movement of the katatsu deck 2. .

If the duct 5 or the blower 6 is clogged with grass, remove the duct 5 from the blower 6 and connect the duct 5 to the blower 6.
from the bottom opening 6a.

〔Example〕

In the embodiment shown in the figure, a paddle-shaped blower 6 that is long in the width direction of the machine body, that is, in the axial direction, is connected to the left and right rear wheels 4,
The blower 6 is attached to the rear lower part of the fuselage frame 10 with a bracket 11 between the blower 6 and the substantially cylindrical case 60 of the blower 6 and the snail discharge port 2a are communicated through a flat box-shaped duct 5 having substantially the same width as the case 60. It is something that

In FIG. 1, E is an engine mounted on the front part of the aircraft body 1. Power is transmitted to a transmission 13 provided at the rear part of the aircraft frame 10 via a drive shaft 12 connected to the rear part of the engine. Rear wheels 4, 4 are rotationally driven by axles 14, 14 protruding on both left and right sides. Reference numeral 15 denotes a power take-off shaft for driving the blower, which is provided to protrude laterally from the side of the transmission 13. Power is transmitted from a pulley 16 on the power take-off shaft 15 to a pulley 17 on the blower rotating shaft 61 via a belt 18. Then, the impeller 62 inside the blower case 60 is rotated.

Opening 6 for communication with the duct 5 of the blower case 60
A is formed by cutting out the lower surface of the cylindrical case 60, as shown in FIG. The front part of the duct 5 follows the rotation locus L of the impeller 62 in the blower 6.
It is formed substantially flat toward the discharge port 2a of the snail deck 2 in the front so as to be substantially tangential to the discharge port 2a.

The duct 5 is detachably attached to the blower case 60 by a clamp 20 consisting of a latch 21 and a lever 22 in the case of the figure, and is tiltable up and down. That is, as shown in FIG. 5, the rear end edge 5b1 of the duct 5 is brought into abutment engagement with the receiver 23 attached to the rear surface of the blower 6, and the free end 21a of the latch 21 attached to the lever 22 is connected to the blower 6. Hang it on the hook 24 attached to 6. By rotating the lever 22 in the opposite direction to the hook 24, the duct 5 is tightly held on the blower case 60, and can be attached and detached with one touch just by rotating the lever 22.

In addition, the duct 5, when attached to the blower 6, can be tilted up and down around the contact portion 5b1 with the receiver 23, and the cutting height adjustment mechanism (not shown) allows the cutting deck 2 to be moved up and down. When the duct 5 is moved, the duct 5 tilts up and down as shown by the chain line 5A in FIG.

However, the duct 5 may be attached to the blower 6 by a removable hinge or the like.

25 in FIG. 4 is the lower opening 6 of the blower 6 when the duct 5 is tilted downward as shown by the chain line 5A in the same figure.
It is a band-like elastic sealing member made of a spring plate or the like to close the gap that occurs between the front opening edge 6a1 of a and the duct top surface 51.The lower bent part is attached to the duct top surface, and the upper part is attached to the blower 6. It has a configuration in which it is pressed against the front peripheral surface.

Note that, as shown in FIG. 4, both side surfaces 60a of the blower case 60 are made to protrude downward along the inner surface of the duct side surface 52 to prevent a gap from forming between the side surfaces 60a and the duct side surface.

The front portion 5a of the duct 5 is fitted into the discharge port 2a of the snail deck 2 so as to be freely inserted and removed, as shown in FIG. 4 in the illustrated example.

In Fig. 4, 26 is the snail discharge port 2.
With a positioning pin fixed to the upper surface of a, the notched recess 27 formed on the front upper surface of the duct 5 is aligned with the pin 26.
to prevent lateral displacement. 28 is a duct holding plate loosely fitted to the positioning pin 26; 29 is a pressing spring thereof;
The front upper surface of the duct 5 is sandwiched between the upper surface of the discharge port 2a and the upper surface of the discharge port 2a, and is constantly pressed and held by a spring 29.
30 is a spring receiver, and 31 is a locking pin for preventing rotation of the holding plate 28.

When the snail deck 2 is lowered as shown by the chain line 2A in FIG. 4, the presser plate 28 escapes upward against the spring 29, allowing the duct 5 to tilt.

Also, when attaching the duct 5 to the katsutadetsuki 2, place the katsutadetsu 2 on the ground G as shown in Fig. 6.
The front part 5 of the duct 5 is inserted between the rear wheels 4 and 4 from behind the blower 6.
a into the discharge port 2a of the snail deck 2. At the same time, the front upper surface of the duct 5 is pressed against the holding plate 28 and the discharge port 2.
The engaging recess 27 is inserted between the upper surface of the positioning pin 26 and the positioning pin 26.

As shown in FIG. 7, the engaging recess 27 is formed to widen toward the front. Further, the rear end portion 28a of the presser plate 28 is curved upward as shown in FIG.
Furthermore, as shown in FIG. 7, if the discharge port 2a of the snail deck 2 is formed to be tapered at the end, and the front part of the duct that fits there is formed to be widened at the end, the snail deck discharge port 2
It becomes easy to attach the duct 5 to a.

Also, as shown in Figure 6, there is a sled 3 on the front lower surface of the duct 5.
2 to allow it to slide on the ground G prevents damage to the duct 5 during installation. In the case of the figure, a part of the lower surface of the duct is made to protrude downward to form the sled 32, but a sled formed separately from the duct 5 may be fixed to the lower surface of the duct.

C. Effects of the invention As described above, the present invention is such that the blower 6 is mounted at the rear lower part of the fuselage 1 with its rotating shaft 61 facing the width direction of the fuselage, and the blower 6 is installed in the front direction approximately tangentially with respect to the rotation locus of the blower impeller. Since the duct 5 is attached to the duct 5, the flow of grass from the duct 5 to the blower 6 becomes smooth and clogging of grass can be reduced.

Moreover, the duct 5 is attached to the blower 6 so as to be tiltable up and down, and the front part of the duct 5 is fitted into the discharge port 2a of the snail deck 2 so as to be freely insertable and detachable.
After engaging an engaging part such as a notch recess 27 provided in the duct 5 with a locking part such as a pin 26 for preventing slippage provided on the snail deck 2 and allowing vertical movement of the snail deck 2, the above-mentioned snail deck is Since a holding member such as a holding plate 8 is provided to maintain the fitted state between the duct 2 and the duct 5, when moving the stubbed deck 2 up and down to adjust the mowing height of the lawn, the stubbed 2
The fitted state of the duct 5 and the duct 5 is maintained by a presser member, and the duct 5 is tilted at the attachment part to the blower 6 to allow the vertical movement of the stub deck 2, so that the cutting height can be adjusted without any problem.

In addition, in the event that the duct 5 or the blower 6 is clogged with grass, the duct 5 should be removed as indicated by the chain line in Figure 4.
By removing it from the blower 6 as shown in B, and further pulling it out from the discharge port 2a of the snail deck 2 as required, it can be easily removed from the connection port of the duct 5 with the blower 6 or the lower opening 6a of the blower 6. There are other effects.

[Brief explanation of the drawing]

Fig. 1 is a side view of the riding lawn mower of the present invention, Fig. 2 is a partial plan view thereof, Fig. 3 is a front view of the blower and grass bag, Fig. 4 is an enlarged side view of the main parts, Fig. 5 The figure is an enlarged side view of the duct attachment part to the blower, FIG. 6 is a side view of the state in which the duct is connected to the snail deck discharge port, and FIG. 7 is a plan view thereof. 1 is the fuselage body, 2 is the snail deck, 3 is the cutting blade, 4 is the rear wheel, 5 is the duct, 6 is the blower, 60 is the blower case, 61 is the rotating shaft, 7 is the shooter, and 8 is the grass bag.

Claims (1)

[Scope of Claim for Utility Model Registration] A snail deck is placed approximately at the bottom of the center of the aircraft, and the grass cut by the rotary cutting blade inside the snail deck is sent from the outlet provided at the rear of the snail deck to the front and back direction between the left and right rear wheels. In a riding lawn mower, the grass is guided through a duct installed at the rear of the machine to a blower located at the lower rear of the machine, and from the blower, through a shutter, and stored in a grass collecting bag located at the upper rear of the blower. The blower is installed at the rear lower part of the fuselage in the width direction of the fuselage, and an opening for communicating with the duct is provided on the lower surface of the approximately cylindrical case of the blower, and both sides of the cylindrical case are overlapped with the sides of the duct. A duct that covers the opening on the lower surface and extends forward in a direction substantially tangential to the rotation locus of the blower impeller is detachably attached to the blower and can be tilted up and down, and the front part of the duct is inserted into and removed from the discharge port of the katatsu deck. and a presser foot that engages an engaging portion provided on the duct with a locking portion for preventing slippage provided on the snail deck, and maintains the fitted state between the snail deck and the duct while allowing vertical movement of the snail deck. A riding lawn mower characterized by being equipped with parts.