JPH073867Y2 - Lawn mower with blower - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a lawn mower with a blower.

(Prior Art) A lawn mower is known in which a cutter housing accommodating a cutter blade and a shooter are connected to each other, and the cut grass is conveyed to the rear glass bag through the shooter.

By the way, a blower is provided in the vicinity of the shooter in such a lawn mower, and exhaust air is sent into the shooter by the blower,
There is one that makes it possible to smoothly convey grass clippings by this exhaust air.

The blower is configured to rotate by the power of the engine of the machine body.Therefore, a belt is attached between the drive pulley provided on the machine side and the driven pulley provided on the blower side, and the belt is used to drive the engine. Is transmitted to the blower side. A tension pulley that engages with the belt is usually provided between the driven pulley and the drive pulley to apply tension to the belt.

(Problems to be Solved by the Invention) By the way, conventionally, the tension pulley and a supporting member of the tension pulley are mounted on the machine body side. Therefore, conventionally, the blower has to be attached to the shooter after the tension pulley has been attached to the machine body side via the support member, and the assemblability is poor.

The present invention has been made in view of such conventional circumstances, and an object of the present invention is to provide a blower-equipped lawn mower having good blower assembly.

(Means for Solving the Problems) In order to solve the above problems, the present invention has a cutter blade arranged in a cutter housing provided in an airframe, a shooter is connected to the cutter housing, and a blower is attached to the cutter housing. A lawn mower in which a belt is mounted between a driven pulley on the blower side and a drive pulley on the machine side, and a tension pulley that engages with the belt is arranged between the driven pulley and the drive pulley.
The tension pulley and the supporting member are integrally attached to the blower.

(Operation) Since the tension pulley and this supporting member are integrally attached to the blower, if only the blower is attached to the shooter, all the assembling is completed, and the assembling property can be improved.

(Embodiment) An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a plan view of a main part of a riding lawn mower, and FIG. 2 is a partial first view.
FIG. 2 is a side view taken along the line II-II in the figure.

In the figure, 1 is a body of a riding lawn mower. Front and rear wheels 2, 2 and rear wheels 3, 3 are provided on the left and right of the front and rear of the body 1, and the rear wheel 3 is an engine mounted on the front of the body 1. To drive. Reference numeral 4 denotes a seat provided at the rear of the machine body, and 5 denotes a steering handle provided at the front thereof.

A cutter housing 6 is provided below the substantially central portion of the machine body 1, and a pair of cutter blades 7, 7 are arranged in the cutter housing 6, and the cutter blades 7, 7 are rotationally driven by the engine in a horizontal plane. Try to mow the grass.

The cutter blade 7 on the right side of the pair of cutter blades 7, 7 is closer to the rear wheel 3 and the cutter blade 7 on the left side
Are arranged closer to the front wheels 2 so that their rotation loci partially overlap each other when viewed from the front-rear direction. The cutter housing 6 that covers the cutter blades 7, 7 includes an upper wall 6a that covers the upper portion of the cutter blade 7 and a peripheral wall 6b that hangs from the outer periphery of the cutter wall 7 and covers the lateral portions of the cutter blade 7.

A discharge port 8 is formed on the right side of the peripheral wall 6b of the cutter housing 6, and the upstream end of a lower shooter 9 is connected to the discharge port 8. The lower shooter 9 is curved outward toward the rear, and extends laterally upward while leaning upward. The downstream end of the lower shooter 9 is connected to the upstream end of the middle shooter 10, and the downstream end of the middle shooter 10 is connected to the upstream end of the upper shooter 11. These shooters 9,
Reference numerals 10 and 11 extend sideways of the machine body and extend rearward, and the downstream end of the upper shooter 11 is inserted into a hopper top 12 above the glass bag G provided in the rear part of the machine body 1.

A blower 13 is provided on the right side of the cutter housing 6 and in front of the lower shooter 9.

FIG. 3 is a plan view of the blower 13, and FIG. 4 is a view on arrow IV of FIG.

As shown in these figures, a mounting base 15 having a V-shape in plan view is fixedly provided on a side portion of the cutter housing 6, and a bracket 16 and a supporting member 17 are mounted on the mounting base 15. The bracket 16 consists of a flat part 16a and a vertical part 16b.
b is attached to the mounting base 15, holes 16c and 16c are formed in the horizontal portion 16b as shown in FIG. 4, and pins 16d are fixed by projecting upward into the holes 16c. The support member 17 has a substantially bifurcated shape, and one piece 17a is attached to the bracket 1 as shown in FIG.
One side of the mounting base 15 with bolts 6 along with the vertical part 16b
15a and the other piece 17b with bolts
Is fastened to the other surface 15b. The two pieces 17a, 17b are overlapped on the tip side, and a support shaft 18 is provided at the tip portion, and the roller R is rotatably attached to the support shaft 18.

The blower 13 is provided in the blower housing 13a, a bearing housing 13b attached to an opening of the blower housing 13a, and the bearing housing 13b.
An impeller shaft 13d rotatably supported via a bearing 13c, an impeller 13e provided at the tip of the impeller shaft 13d, and the like. A driven pulley 20 is attached to the base end side of the impeller 13e, and a duct portion 13f connected to the lower shooter 9 is formed at the rear end of the blower housing 13a.

A substrate 22 is fixed to the side surface of the blower housing 13a, and an engaging hole 22a is formed at one end of the substrate 22 by curling. Further, a cover 23 is fixedly provided on the substrate 22, and the cover 23 is fixed.
23 comprises an upper surface portion 23a and a side surface portion 23b, and the side surface portion 23b is fixed to the substrate 22. A pipe 24 is fixed to the side surface portion 23b of the cover 23 by welding or the like, and an engagement hole 24a is formed in the pipe 24.

As shown in FIG. 4, a support plate 25 is fixed to the lower surface of the upper surface portion 23a of the cover 23. The support plate 25 is composed of an upper surface portion 25a and a side surface portion 25b. Top part 23a
Further, the side surface portions 25b are fixed to the side surface portions 23b of the cover 23, respectively. A shaft 26 is provided below the support plate 25, and a pulley 29 is rotatably provided on the shaft 26 via a bearing. Support plate
A hole 25c is formed on the tip side of 25, and a support shaft 27 protruding downward is fixedly provided in this hole 25c.

A rotatable collar 33 is provided on the outer periphery of the shaft 27, and one end side of the substrate 35 is fixed to the collar 33. A shaft 36 is fixedly provided on the upper surface of the other end side of the substrate 35, and a pulley 40 is rotatably provided on the outer periphery of the shaft 36 via a bearing. A torsion spring 41 is provided on the outer periphery of the collar 33, one end side of the spring 41 is locked to the support plate 25 side and the other end side is locked to the substrate 35 side, and the other end side of the substrate 35, that is, a pulley. Make sure that the 40 side is always urged in the direction A in FIG. This is for giving tension to the belt 70 described later.

In the above, on the side of the blower 13, the pulley supporting members such as the substrate 22, the cover 23, the supporting plate 25, the substrate 35, and the pulleys 29, 4 are provided.
0 and the like are integrally attached, and one unit 46 is configured by these. Meanwhile, bracket 16, pins 16d, 16d
Thus, a mounting portion 47 fixed to the cutter housing 6 side is configured.

The blower 13 is attached to the cutter housing 6 side by attaching the unit 46 to the attachment portion 47. Specifically, the engagement hole 22a of the substrate 22 and the engagement hole 24a of the pipe 24 are connected to the pins 16d ,.
This is done by engaging 16d from above. After this engagement, the pin is inserted into the hole 16 _d1 formed in the one pin 16 _d to _prevent the pin from coming off.

Next, the drive system of the cutter blade 7 and the blower 13 will be described.

The cutter blades 7, 7 are provided with vertical rotary shafts 50, 51 as shown in FIGS. 1 and 2, and these rotary shafts 50, 51 project from the upper wall 6a of the cutter housing 6, Pulleys 53 and 54 are fixed to the protruding shaft portion.
A belt 58 is stretched between these pulleys 53, 54 and a drive pulley 56 and a tension pulley 57 provided on the upper portion of the cutter housing 6. In addition, another pulley 60 is provided on the shaft of the drive pulley 56, and a belt 64 is stretched between the pulley 60 and a pair of pulleys 61, 62 on the output shaft side of the engine, so that the power of the engine is pulley. 60
The belt 58 drives the two cutter blades 7 to rotate by the belt 58.

Further, another pulley (driving pulley) 66 is provided on the rotary shaft 50 of the cutter blade 7 on the right side, and a belt 70 is stretched between the pulley 66 and the pulley 20. Partly lock onto the pulleys 29, 40. Impeller shaft 13d of blower 13 by this belt 70
Are driven, and the impeller 13e rotates in a vertical plane.

Therefore, the lawn is mowed by the rotation of the two cutter blades 7, 7, while an airflow is generated in the cutter housing 6 by the wings formed upright at the tip of the cutter blade 7, and this airflow causes the lawn mowing. Is discharged from the discharge port 8 of the cutter housing 6 to the lower shooter 9. Then, the exhaust air generated by the rotation of the impeller 13e is sent to the lower shooter 9, and combined with the airflow by the cutter blade 7, the grass clippings are taken by the shooters 9, 10, 1.
It is conveyed to the rear glass bag 12 via 1.

In the above, in the present embodiment, the substrate 22, the cover 23, the support plate
Since the pulley supporting members such as 25 and the substrate 35 and the pulleys 29 and 40 are integrally attached to the blower 13 side, the blower 13
When the is attached to the attachment portion 47 on the cutter housing 6 side, the assembly of the pulley support members 29, 40 and the like into the machine body 1 is completed. Therefore, it is possible to improve the assemblability thereof.

(Effect of the Invention) As described above, according to the present invention, the tension pulley and this supporting member are integrally attached to the blower.
If only the blower is attached to the shooter, all the assembling will be completed and the assembling ability can be improved.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a plan view of a main part of a riding lawn mower, FIG. 2 is a side view partially cut along the line II--II in FIG. 1, and FIG. 3 is a blower. 4 is a plan view of FIG. 4, and FIG. 4 is a view on arrow IV of FIG. In the drawings, 6 is a cutter housing, 7 is a cutter blade, 9 is a shooter, 13 is a blower, 20 is a driven pulley, 29,40 are tension pulleys, 22,23,25,35 are support members, and 60 is a drive pulley. , 70 is a belt.

Claims (1)

[Scope of utility model registration request] 1. A cutter blade is disposed in a cutter housing provided in a machine body, a shooter is connected to the cutter housing, a blower is attached to the cutter housing, and a driven pulley on the blower side and a drive pulley on the machine body side are provided. In a lawn mower in which a belt is hung on and a tension pulley engaging with the belt is disposed between the driven pulley and the drive pulley, the tension pulley and the supporting member are integrally attached to the blower. A lawn mower with a characteristic blower.