JPH0434183Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field] The present invention relates to a cooling structure for a snow blower.

[Conventional technology]

The snow blower includes an auger at the front of the machine, and an engine that rotationally drives the auger at the rear of an auger housing that covers the auger. For example, the top and surroundings of the engine are covered with a cover extending rearward from the rear surface of the auger housing, and the engine cooling air is taken in from the intake port provided on the rear surface of the cover, and after cooling the engine, etc. It is exhausted to the outside air through the exhaust port provided at the front of the cover.

[Problem that the invention attempts to solve]

In cases where the cooling air after cooling the engine is discharged from the front exhaust port, the heated cooling air hits the rear surface of the auger housing and warms the auger housing. This may cause the snow to melt, which may have a negative impact on the snow throw distance and the consistency of the snow throw.

This idea was made in view of the above circumstances.
An object of the present invention is to provide a cooling structure for a snow blower that prevents an auger housing from being heated by cooling air after engine cooling.

[Means for solving problems]

In order to achieve the above object, the present invention has a structure in which an engine for rotationally driving the auger is disposed at the rear of an auger housing that covers the auger disposed at the front of the aircraft body, and an engine that rotationally drives the auger is arranged rearward from the rear surface of the auger housing. In a snow blower, a cover is provided to extend to cover above and around the engine, and the front part of the cover is provided with an exhaust port for engine cooling air. It is characterized by being installed inside.

[Effect]

Engine cooling air is sucked in through the intake port of a cover provided at the rear of the auger housing to cover above and around the engine, cools the engine, and then is discharged to the outside air from the exhaust port at the front of the cover. In this case, the cooling air of the engine cooling air is blocked by the partition wall that partitions the auger housing and the exhaust port, and the cooling air does not directly hit the auger housing, so that the auger housing is prevented from being heated.

[Embodiment] Fig. 1 is a perspective view of the snow blower, Fig. 2 is a side view of the main part, Fig. 3 is a plan view of the main part, and Fig. 4 is a rear view of the upper cover.

The snow blower 1 includes an auger 2 at the front of the machine body, and the rear, sides, and upper part of the auger 2 are covered with an auger housing 3. The auger housing 3 is provided with a discharge shutter 4 extending in the vertical direction at the upper rear thereof, and a device 5 for adjusting the discharge direction is provided above the shutter 4. The auger 2 is rotationally driven by an engine 6 disposed at the rear of the auger housing 3, scrapes snow inside the auger housing 3 to the center, throws up the snow, and sends the snow through the shooter 4 and discharge direction adjustment device 5. Eject in a specified direction.

A clutch case 7 containing a built-in clutch for intermittent transmission of engine power is fixed to the rear surface of the auger housing 3, and a clutch case of an engine 6 is fixed to this clutch case 7. The engine 6 is arranged vertically, a cylinder head is arranged at the top, a cooling fan 9 is fixed to the rear end of a crankshaft 8 extending in the front-rear direction, and a recoil starter 10 is provided behind it. The cooling fan 9 is covered with a cooling fan cover 11, with a portion of the cooling fan cover 11 extending forward to cover a portion of the engine 6 and guiding cooling air toward the engine 6.

The lower portions of the left and right handle pipes 12a and 12b of the handle 12 are fixed to two upper and lower locations on both sides of the clutch case 7 with bolts 13, and extend rearward and upward from the clutch case 7 above the engine 6. The lower portions of the left and right handle pipes 12a, 12b of the handle 12 extend rearward in an L-shape from the clutch case 7, and wheels 14 are attached to the left and right rear ends. Further, the left and right rear end portions of the lower portion are connected to each other, and the engine 6 is supported by the connecting portion 15.

An upper cover 16 is provided at the rear of the auger housing 3. This upper cover 16 is a cover whose front and lower parts are open, and has an upper surface portion 1 that covers the upper surfaces of the clutch case 7 and the engine 6.
6a, a side surface portion 16b extending downward from the left and right edges of the top surface portion 16a, and a recess 17 in which the left and right handle pipes 12a and 12b are arranged by closing the openings at the rear ends of the top surface portion 16a and the side surface portion 16b. The front end of the upper face 16a projects further forward than the front end of the side face 16b, and the projecting part is provided with a shutter insertion hole 4a. This upper cover 16 covers the left and right handle pipes 12 of the handle 12.
a and 12b, and is placed on the handle 12, and the shooter insertion hole 4a of the upper surface part 16a is inserted into the shooter 4, and the front end of the upper surface part 16a is placed on the upper surface of the auger housing 3. cover 16
The front end surface of the auger housing 3 is disposed in contact with the rear surface of the auger housing 3, and covers a portion of the top and side surfaces of the clutch case 7 and the top surface of the engine 6. The rear portion is fixed to the handle 12 and the front portion is fixed to the auger housing 3.

Further, a lower cover 18 is provided below the upper cover 16. This lower cover 18
is a cover whose front, upper and lower sides are open, and is made up of left and right side parts 18b that cover the sides of the clutch case 7 and engine 6, and a rear part 18c connected between the rear edges of these side parts 18b. The lower cover 18 is inserted below the upper cover 16, its upper edge is in contact with the lower edge of the upper cover 16, and its front end surface is attached to the auger housing 3.
The clutch case 7 is disposed in contact with the rear surface of the engine 6, and covers the side and rear surfaces of the clutch case 7 and the engine 6. The front and rear portions of the upper end portion are fixed to mounting pieces (not shown) that protrude from the lower edge of the upper cover 16.

As described above, the upper cover 16 and the lower cover 18 extend rearward from the rear surface of the auger housing 3 to cover the upper, side, and rear portions of the clutch case 7 and the engine 6.

The side surface portion 18b of this lower cover 18
When the rear end, that is, the rear surface portion 18c is viewed from the side, there are a portion extending vertically behind the recoil starter 10, a portion extending rearward and upward from the upper end, and an upper cover 16 extending vertically from the upper end. It consists of a part that comes into contact with the lower edge of the rear surface part 16c,
An engine cooling air intake port 1 is provided at the upper end of the rear surface portion 18c of the lower cover 18, that is, the portion extending rearward and upward.
A plurality of 9 are provided at intervals vertically.
This suction port 19 is opened in a horizontally long manner over substantially the entire length in the width direction of the rear surface portion 18c.

And these inlets 19 are provided with louvers 20.
is provided. The louver 20 protrudes inward from the lower end edge of the inlet 19 and has an L-shaped cross section with an upwardly bent bent piece 20a at its inner end,
The openings at both ends in the width direction are closed. The bent piece 20a of the louver 20 prevents snow from entering through the suction port 19. And these louvers 20
A plurality of vertical ribs 21 are provided at intervals in the width direction, spanning the gap.

Further, a plurality of exhaust ports 22 are provided in the front part of the side surface 16b of the upper cover 16 at intervals in the front and rear. The exhaust port 22 is opened vertically in the center of the side surface portion 16b in the vertical direction.

These exhaust ports 22 also have the above-mentioned intake port 1.
A louver similar to the louver 20 provided at 9 is provided.

A partition wall 23 that partitions the auger housing 3 and the exhaust port 22 is vertically provided within the upper cover 16. This partition wall 23 is provided over the entire length of the upper cover 16 in the width direction, and the left and right ends are arranged in front of the exhaust port 22, and the auger housing 3
It is arranged continuously on the rear surface and behind the discharge shutter 4, and the left and right ends are connected to the side surface 16 of the upper cover 16.
b, the upper end is the upper surface part 16a of the upper cover 16.
are integrally connected to.

Therefore, the cooling air taken into the lower cover 18 by the cooling fan 9 from the intake port 19 flows in from the opening 24 provided in the case of the recoil starter 10, passes through the cooling fan cover 11, and is sent to the engine 6, etc. After cooling the exhaust port 22
to the outside air. In this case, the cooling air after cooling the engine is blocked by the partition wall 23 and does not directly hit the rear surface of the auger housing 3 and the discharge shutter 4, so that the rear surface of the auger housing 3 and the discharge shutter 4 are not heated. Prevented.
Therefore, the snow does not melt, and the snow throwing distance and snow throwing consistency are not impaired.

[Effect of idea]

As explained above, according to the present invention, the partition wall that partitions the auger housing and the engine cooling air outlet is provided in the cover, thereby preventing the auger housing from being heated by the engine cooling air. As a result, the auger housing is heated and the snow melts, and the melted snow is prevented from freezing and adhering to the discharge shutter and worsening the snow discharge performance, and it is possible to maintain a good snow throw distance and snow compaction. be.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and Fig. 1 is a perspective view of the snow blower, Fig. 2 is a side view of the main part, Fig. 3 is a plan view of the main part, and Fig. 4 is the back of the upper cover. It is a diagram. 1 is a snow blower, 2 is an auger, 3 is an auger housing, 4 is a discharge shutter, 5 is a discharge direction adjustment device, 6 is an engine, 7 is a clutch case, 8 is a crankshaft, 9 is a cooling fan, 10 is a recoil starter , 11 is a cooling fan cover, 12 is a handle, 13 is a bolt, 14 is a wheel, 16 is an upper cover, 18 is a lower cover, 19 is an intake port, 22 is an exhaust port, 23 is a partition wall, and 24 is an opening.

Claims (1)

[Scope of utility model registration request] An engine for rotationally driving the auger is disposed at the rear of an auger housing that covers the auger disposed at the front of the aircraft, and extends rearward from the rear surface of the auger housing to cover above and around the engine. In a snow blower equipped with a cover and an engine cooling air exhaust port in the front of the cover,
A cooling structure for a snow blower, characterized in that a partition wall separating the auger housing and the exhaust port is provided in the cover.