JP2013123945A - Working vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve such a problem that the projection of a wiper of a rear glass becomes impeditive and, therefore, the degree of opening of the rear glass is easily limited, when the rear glass is largely opened to the upper side in such a form that an air conditioner unit is attached while projecting to the rear end part of a tractor roof.SOLUTION: A cabin roof is configured such that an air conditioner unit 4 and an air conditioner cover 5 with which a lower surface part of the air conditioner unit 4 is covered are mounted on the rear end part of the roof 2 of a cabin 1 so as to be projected to the rear side from the upper end part of the rear glass 3 of the cabin 1, and a wiper recessed part 8 to which the wiper 7 vertically opened and closed integrally with the rear glass 6 is oppositely fitted is formed on the lower surface of the air conditioner cover 5.

Description

  The present invention relates to a cabin of a work vehicle.

  In the form in which the air conditioner unit is provided in the cabin roof part on the windshield or rear glass of the tractor cabin, a part of the air conditioner unit bulges in the field of view of the upper part of the windshield or rear glass (for example, Patent Document 1). See), it is easy to limit the field of view low.

JP 2010-215042 A

  When the air conditioner unit is arranged at the front end or rear end of the tractor yabbin, a part of this air conditioner unit bulges out in front and rear of the upper end of the windshield or rear glass, and the upper view area of the driver is increased. By limiting the range of view of tractor work, workability and operability are reduced. In particular, in tractor work, the rear glass may be opened largely upward, but at this time, the rear glass wiper protrusion is in the way, and the rear glass opening is likely to be limited.

  According to the first aspect of the present invention, an air conditioner cover that protrudes rearward from an upper end portion of the rear glass 3 of the cabin 1 at the rear end portion of the cabin 1 roof 2 and covers the lower surface portion of the air conditioner unit 4. 5, and a wiper recess 8 is formed on the lower surface of the air conditioner cover 5 so that a wiper 7 that opens and closes integrally with the rear glass 6 is opposed to the wiper.

  A driver who sits in the driver's seat in the cabin room and performs a driving operation performs a predetermined tractor operation while seeing through the windshield, the side door glass, the rear glass 3, and the like. When working with the rear glass 3 closed, cleaning of the dirt on the surface of the rear glass 3 is performed by swinging the rear wiper 6 in the left-right direction. When the rear glass 3 at the rear side of the cabin room is rotated upward to be opened, the rear wiper 6 attached to the outside of the rear glass 3 is integrally rotated upward. When the rear glass 3 and the rear wiper 6 are rotated rearward and upward, a part of the rear wiper 6 protruding from the outer surface of the rear glass 3 is fitted into the wiper recess 7 of the air conditioner cover 5 at the upper position. Thus, the opening of the rare glass 3 can be increased by bringing the surface of the rear gas 3 closer to the lower surface of the upper air conditioner cover 5.

According to a second aspect of the present invention, the wiper recess 7 of the air conditioner cover 5 is provided with a washer nozzle 8 for injecting a washer liquid toward the surface of the rear glass 3.
When the rear wiper 6 is operated, the rear glass 3 is moved downward to be in a closed state, and a washer liquid is ejected from a washer nozzle 8 in a wiper recess 7 facing the rear upper position of the rear glass 3 to thereby cause the rear wiper to 6 can be sprayed on the rear outer surface of the operated rear glass 3. When the operation of the rear wiper 6 is stopped and the rear glass 3 is opened, the protruding portion of the rear wiper 6 that opens and operates integrally with the rear gas 3 as described above is fitted into the wiper recess 7 where the washer nozzle 8 is positioned. The position of the washer nozzle 8 is set so as not to collide with the rear wiper 6.

  In the first aspect of the invention, the air conditioner unit 4 and the air conditioner cover 5 are projected rearward of the cabin roof 2, and a wiper recess 7 into which the rear wiper 6 can be fitted is formed on the lower surface of the air conditioner cover 5. Therefore, when the rear glass 3 is opened to the rear upper part, the rear wiper 6 protruding from the glass surface does not collide with the air conditioner cover 5 and the opening degree is not restricted to a small extent, and the work vehicle is opened as far upward as possible. The rear view of the driving operation can be maintained widely, and damage to the rear wiper 6 and the like can be reduced.

  According to the second aspect of the present invention, the washer nozzle 8 is provided in the wiper recess 7 of the air conditioner cover 5 located at the rear upper part of the rear glass 3, so that the protrusion of the washer nozzle 8 on the lower surface of the air conditioner cover 5 is reduced. Alternatively, the projection can be eliminated and the configuration can be simplified, and the rear glass 3 can be configured to hardly collide with the glass 3 when the rear glass 3 is opened. Further, when the washer liquid is sprayed from the washer nozzle 8 onto the surface of the front rear glass 3, the spray angle with respect to the surface of the rear glass 3 can be increased so that it can be sprayed strongly and evenly, so that the wiper effect can be enhanced.

The side view of a tractor cabin. The side view of a cabin roof part and an air-conditioner unit part. The side view at the time of rear glass closing. The side view at the time of rear glass opening. The perspective view of a rear glass part. The plane sectional view of a cabin. The sectional side view of an undercover attaching part. The perspective view of a cabin frame part. The side view. The perspective view of an air-conditioner unit part. The perspective view of a cabin roof cover part. The perspective view when attaching and detaching the air-conditioner cover.

  The tractor body 9 of the work vehicle has an engine 10 mounted on the front, a pair of left and right front wheels 13 that are steered by operating the steering handle 12 on the front side of the driver's seat 11, and a transmission mechanism that is linked to the engine 10. As a configuration of a riding four-wheel traveling mode in which a pair of left and right rear wheels 15 are mounted on the rear portion of the interior transmission case 14, a dashboard portion 16 on the vehicle body 9 and a fender 17 on the rear wheel 15 are provided. A cabin 1 is formed which covers the driver's seat 11 and the upper portion of the floor 18 at the bottom to form a cabin room. Various working machines such as a tillage device can be attached to the rear portion of the vehicle body 9 via a lift link that is lifted and lowered by a lift arm to perform farming work such as tillage.

  The cabin 1 has a floor 18 such as a step floor or a seat floor on which the driver's seat 11 is mounted at the bottom, a rear wheel fender 17 on both right and left sides of the seat floor, and an inner side of the fender 17. A fender cover 19 and the like are provided, and the seat floor portion is recessed in a bucket shape, and this lower surface is supported and mounted so as to be placed on the upper side surface of the vehicle body 9. A dashboard 16 that covers the steering post portion is provided at the center of the front side of the step floor 18 and is mounted so as to cover the rear side portion of the engine bonnet 20. A boarding / alighting step 21 is provided outside the floor 18. The cabin 1 is attached by supporting a bracket 52 at the lower end portion of the front pillar 22, a bracket 53 at a fender cover 19 portion at the lower portion of the rear chiller 23, and the like with a support bracket disposed on the vehicle body 9 via a damper or the like. It is in form.

  On the upper side of such a floor 18 part, the front pillar 22, the rear pillar 23, the mid pillar 24, etc. are disposed on the left and right sides, and the front beam 26, A roof frame 25 having a girder shape is attached and supported from the rear beam 27, the side beam 28, and the like, and the cabin roof 2 is attached to the upper side. The lower end portion of the front pillar 22 is positioned and connected to the outer end portion of the front end of the step floor 18, and extends between the upper end edge portion of the dashboard 16 at the center portion and the front beam 26 portion of the upper roof frame 8. A front glass 29 is provided, and under glass 30 is formed on both sides of the front glass 29 on the left and right sides so that the field of view in front of the feet is wide.

  A door opening is formed between the front pillar 22 and the mid pillar 24 so that the door glass 31 can be opened and closed. The door glass 31 has a rear end edge attached to the mid pillar 24 with a hinged opening / closing hinge, and the front end edge portion can be opened and closed inward and outward. The upper edge of the door glass 31 is formed along the lower edge of the side beam 28 of the roof frame 25, and the lower edge is formed along the door floor step floor 18 to the upper edge of the fender 17. ing. A side glass 32 is provided between the mid pillar 24 and the rear pillar 23 so as to be opened and closed. The upper edge of the side glass 32 is formed along the lower edge of the side beam 28, and the lower edge is formed along the upper edge of the fender 17.

  A rear glass 3 is provided between the left and right rear pillars 23 so as to be opened and closed. The upper edge of the rear glass 3 is formed along the lower edge of the rear beam 27 of the roof frame 25, and the lower edge is formed along the upper edge of a connecting bar 33 that connects the lower ends of the rear pillar 23. .

  The roof frame 25 configured at the upper end of each of the pillars 22, 23, 24 and the like is configured in a girder shape in a plan view. Among these, the rear beam 27 is configured in two upper and lower stages. The mounting bracket 56 of the air conditioner unit 4 is supported on the upper side of the support arm 34 protruding rearward and is attached by bolting or the like. A dish-shaped under cover 35 is attached to the lower side of the air conditioner unit 4 so as to be substantially horizontal, and an upper cover 36 is attached to the upper side of the air conditioner unit 4 so as to cover the air conditioner unit 4 from above and below. The form is configured.

  The air conditioner cover 5 is formed integrally with the roof cover 54 on the cabin 1 main body side and can be formed by a single plate. However, as shown in FIGS. The edge 55 is joined to the rear end portion of the roof cover 54 and is detachably attached.

  The air conditioner unit 4 having the heat exchanger 37, the blower 385, the duct 39 and the like is positioned and attached to the unit space on the under cover 35. The air outlet 40 of the air conditioner unit 4 is opened to the cabin room side, communicates with the duct 41 disposed on the lower peripheral portion of the roof cover 54 of the cabin roof 2, and the adjustment air can be blown out from the duct port 57. .

  As described above, the cabin roof 2 is configured to cover the upper side of the driver's seat 11 on the floor 18 of the cabin 1 room, and the windshield 29, the rear glass 3, the side door glass 32, etc. are formed on the outer periphery of the cabin room. The air conditioner unit 4 is disposed at the rear end of the cabin roof 2 so as to project from the rear upper end of the rear glass 3 above the rear beam 27 of the roof frame 25, and the air sent from the air conditioner unit 4. The nozzle 41 and the duct 41 are arranged in the cabin roof 2 to form an air conditioner that circulates air into the cabin room.

  An air conditioner unit 4 and an air conditioner cover 5 that covers the lower surface of the air conditioner unit 4 are mounted at the rear end of the cabin roof 2 so as to protrude rearward from the upper end of the rear glass 3 of the cabin 1. 5 has a cabin roof structure in which a wiper recess 8 is formed in which a wiper 7 that opens and closes integrally with the rear glass 6 is opposed and fitted.

  A driver who sits in the driver's seat in the cabin room and performs a driving operation performs a predetermined tractor operation while seeing through the windshield, the side door glass, the rear glass 3, and the like. When working with the rear glass 3 closed, cleaning of the dirt on the surface of the rear glass 3 is performed by swinging the rear wiper 6 in the left-right direction. When the rear glass 3 at the rear side of the cabin room is rotated upward to be opened, the rear wiper 6 attached to the outside of the rear glass 3 is integrally rotated upward. When the rear glass 3 and the rear wiper 6 are rotated rearward and upward, a part of the rear wiper 6 protruding from the outer surface of the rear glass 3 is fitted into the wiper recess 7 of the air conditioner cover 5 at the upper position. Thus, the opening of the rear glass 3 can be increased by bringing the surface of the rear gas 3 closer to the lower surface of the upper air conditioner cover 5.

The wiper recess 7 of the air conditioner cover 5 is provided with a washer nozzle 8 for injecting washer liquid toward the surface of the rear glass 3.
When the rear wiper 6 is operated, the rear glass 3 is moved downward to be in a closed state, and a washer liquid is ejected from a washer nozzle 8 in a wiper recess 7 facing the rear upper position of the rear glass 3 to thereby cause the rear wiper to 6 can be sprayed on the rear outer surface of the operated rear glass 3. When the operation of the rear wiper 6 is stopped and the rear glass 3 is opened, the protruding portion of the rear wiper 6 that opens and operates integrally with the rear gas 3 as described above is fitted into the wiper recess 7 where the washer nozzle 8 is positioned. The position of the washer nozzle 8 is set so as not to collide with the rear wiper 6.

  The rear glass 3 is provided with hinges 42 pivotally supported with respect to the rear beam 26 of the roof frame 25 at two positions on the left and right sides of the upper edge, and the rear glass 3 is pivoted backward and up around the hinges 42 to open and close the rear glass 3. Can do. The rear glass 3 may be provided with a support rod 43 and supported between the rear pillar 23 and the opening degree of the rear glass 23. Further, a wiper shaft 44 is provided on the rear side surface of the rear glass 3 at the upper end portion of the central portion in the width direction, and a wiper 6 that rotates left and right around the wiper shaft 44 is attached. The wiper 6 is driven by an electric wiper motor 45 attached to the inside of the rear glass 3. When the wiper 6 is driven and oscillated, the wiper 6 is rotated and slid in parallel along the surface of the rear glass 3, but the wiper 6 is stopped and the rear glass 3 is moved around the hinge 42 at the upper end. When rotating to the rear upper part, the wiper 6 is also integrally rotated upward in contact with the surface of the rear glass 3 so that the rear glass window can be opened widely.

  In such an open / close mode of the rear glass 3, each of the hinges 42 and the rotating part of the rear wiper 6 protrude from the surface of the glass 3. A hinge recess 51 and a wiper recess 7 having an appropriate width and depth are formed.

  An insulator 46 for sealing the rear glass 3 is bonded to the rear side surface of the rear beam 27 of the roof frame 25 to which the rear glass 3 is attached to be opened and closed by a hinge 44, and a front end garden portion 47 of the under cover is attached to a directly upper side surface portion of the insulator 46. Peep. Even if water droplets condensed by the operation of the air conditioner are guided in the under cover 35 and flow down from the gap with the rear beam 27 at the front end, the water is guided to drain by the insulator 46. Further, the air conditioner unit 4 is connected with a drain pipe 58 for discharging and guiding the drain liquid, a condenser on the tractor engine 10 room side, a cooler pipe 59 between the radiator and the like, a heater pipe 60 and the like. The drain pipe 58 is configured to guide the flow down to the ground through the inside of the rear pillar 23, and the cooler pipe 59, the heater pipe 60, and the like are connected through the inside of the front pillar 22, the lower side of the roof cover 54, and the like. Yes.

  A washer nozzle 8 is attached to the wiper recess 7 formed in the under cover 35 of the air conditioner cover 5, and wiper washer fluid is sprayed from the position of the cover 35 toward the rear surface of the rear glass 3. The liquid is supplied from a tank 48 attached to the rear end of the fender 17 through a pump 49 and a hose 50. The hose 50 is connected to the washer nozzle 8 from the fender 17 through the rear pillar 23 and the under cover 35. Maintenance such as replenishment of washer fluid to the tank 48 is facilitated.

DESCRIPTION OF SYMBOLS 1 Cabin 2 Cabin roof 3 Rear glass 4 Air-conditioner unit 5 Air-conditioner cover 6 Rear wiper 7 Wiper recessed part 8 Washer nozzle

Claims (2)

  At the rear end portion of the roof (2) of the cabin (1), the air conditioner unit (4) and the lower surface portion of the air conditioner unit (4) protrude rearward from the upper end portion of the rear glass (3) of the cabin (1). An air conditioner cover (5) is mounted, and a wiper recess (8) is formed on the lower surface of the air conditioner cover (5) so that a wiper (7) that opens and closes integrally with the rear glass (6) is engaged with the wiper. A working vehicle characterized by that.   The work vehicle according to claim 1, characterized in that a washer nozzle (9) for injecting washer fluid toward the rear glass (3) surface is provided in the wiper recess (8) of the air conditioner cover (5). .

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