JPH1199910A - Wiper drive part mounting structure of working vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mounting structure capable of withstanding for long time by damping an opening and closing shock in a wiper device installed on an opening and closing window. SOLUTION: A drive part mounting base 25 is installed on a cabin window indoor side through a cushioning material 24, and wiper drive parts such as a wiper motor 22 and gear case 23 is fixed to the mounting base through a support member 27. Also a wiper shaft projected from a gear case side is passed to the outside of a window glass, and the wiper drive part comprising the wiper motor 22 and interlocking mechanism part inside the gear case 23 is supported for vibration isolating through the cushioning material 24, drive part mounting base 25, and support member 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiper drive unit mounting structure for an agricultural vehicle such as a tractor and a combine, and a working vehicle for transportation and construction such as a forklift and a bulldozer.

[0002]

2. Description of the Related Art Conventionally, a windshield is provided on a front or rear window of a cabin of a work vehicle. The mounting structure of a wiper driving unit such as a motor is directly mounted on a glass surface of a window constituting member, and a wiper is mounted on a plate surface by penetrating a wiper shaft (for example, JP-A-7-322827).

[0003]

However, in the above-described drive unit mounting structure, the motor and other interlocking mechanisms are damaged by an impact when the window is opened and closed, or the through hole through which the wiper shaft passes is damaged. And so on.

[0004]

SUMMARY OF THE INVENTION The present invention seeks to secure the safety of a wiper device while absorbing the impact of frequent opening and closing operations, and has taken the following technical measures. That is, a drive unit mounting base 25 is provided on the cabin 6 on the indoor side of the window 11 via the cushioning material 24, and the wiper driving units such as the wiper motor 22 and the gear case 23 are fixed to the mounting base via the support member 27, A wiper drive unit mounting structure for a working vehicle is provided in which a wiper shaft protruding from the case side is provided so as to penetrate outside the window glass.

[0005]

Operation and effect of the present invention Wiper motor 22 and gear case 23
The wiper drive unit including the inner interlocking mechanism is supported in a vibration-proof manner through the cushioning member 24, the drive unit mounting base 25, and the support member 27, and can alleviate the vibration impact of the window 11. Even if it is used for an opening / closing window, there is little danger of damaging the internal structure of the wiper driving section. In addition, the wiper shaft 29 and the like are less likely to interfere with the through-hole of the window glass, and can withstand long-term use.

[0006]

An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a tractor body as a working vehicle, which is provided with a front wheel 2 and a rear wheel 3 at front and rear portions, and appropriately reduces the rotational power of an engine 4 by a transmission in a transmission case 5, and reduces the reduced rotational power to the front wheels 2, It is configured to transmit to the rear wheel 3. A cabin 6 is mounted on the body 1. The cabin 6 is framed by a cabin frame in which front supports 7, 7 and rear supports 8, 8 are arranged on the left and right, and upper ends of the supports 7, 7, 8, 8 are connected by an upper frame 9. You.

A front window 10 is provided between the left and right front supports 7, 7, a rear window 11 having a curved surface on the left and right sides is provided between the left and right rear supports 8, 8, and between the front and rear supports 7, 8. And a door 12 made of a single piece of glass without a frame. In the cabin 6 room, a handle post 14 is provided in front of the driver's seat 13 in the center of the fuselage, and a steering handle 15 is provided so as to be capable of turning operation. The turning operation of the steering handle 15 is configured such that the left and right front wheels 2 are steered in conjunction with the steering. An accelerator lever is provided near the handle 15,
Left and right independent brake pedals are provided below the handle post 14, and operation levers (both not shown) other than the driver's seat 13 are provided near the driver's seat 13.

A tilling machine 18 is mounted on the rear of the machine body 1 via a three-point link mechanism including a top link 16 and lower links 17 and 17 so as to be able to move up and down. The hydraulic cylinder mechanism that vertically moves the top link 16 expands and contracts by rotating the position lever, and moves the working machine 18 up and down. The rear window 11 is provided with a wiper device 20. The rear window 11 made of glass or acrylic material is provided at the center of the upper hinge 21 so as to be openable and closable up and down. Cabin 6 of this rear window 11
A wiper driving unit including a wiper motor 22 and a gear case 23 in which a reciprocating rotation interlocking mechanism (not shown) is mounted is mounted near the hinge 21 in the upper part on the indoor side.
More specifically, the drive unit mounting base 25 having a U-shaped cross section with the cushioning member 24 made of a rubber plate having a parallelogram shape on the rear window 11 indoor side plate surface sandwiched by the window glass side is attached to the cushioning member. The window glass is sandwiched between the window through holes provided at two opposite sides of the material 24 and the fixing members 26, 26, and the glass is clamped and fixed. In the drive unit mounting base 25, stud bolts 28, 28 projecting from two right and left portions of the mounting base 25 penetrate through right and left mounting holes of a support fitting 27 to which the wiper driving unit is detachably fixed by bolts or the like. It is to be tightened and fixed.
In the gear case 23, the rotation of the wiper motor 22 in a certain direction is reduced, and the wiper shaft 29 is reciprocated in a predetermined angle range by a four-bar linkage (not shown). The wiper shaft 29 is provided on the window glass. Through hole 30
And the base end of the wiper 31 is fixed to the distal end side thereof. Reference numerals 32, 32 denote sealing members provided at intervals in the width of the window glass, and 33 denotes a rubber cover for covering the chamber-side projection. Thus, the wiper motor 22 and the gear case 2
The wiper driving section including the interlocking mechanism section 3 includes a cushioning member 24,
It is supported in a vibration-proof manner via the drive unit mounting base 25 and the support fitting 27.

Reference numeral 34 denotes a cover that covers the entirety.
35 are provided detachably. A connector 37 for connecting a drive wiring of the wiper motor 22 or the like is viewed from an opening 36 opened on the side wall, and a connector for a wiring connected to an operation switch (not shown) is attached and detached.
A roof 40 is provided above the cabin 6. That is, the upper frame 9 is connected to the left and right by a plurality of horizontal rails 41,
Are provided, and a roof 4 is provided above the horizontal rails 41, 41.
0 is fixed. The horizontal rail 41 is bent downward at the left and right end sides of the channel material having a U-shaped cross section and welded to the upper frame 9,
The support fitting 42 extended from the U-groove and the bottom of the front-rear groove 40a formed on the roof 40 are joined to each other so that the bolt 4
3. Fix with nuts 44. The cross-sectional shape of the upper frame 9 is such that the middle portion is a concave portion, the horizontal bar 41 is fixed to the concave portion 9a, and partition plates 45, 45. Recess 9 to form a side wall
In a, a drainage channel 9b is formed in the front-rear direction. The drainage channel 9b is configured so that the front side of the body becomes an open end, and the rear end side of the body is configured to be continuous left and right. Also,
Weather strips 46 are fitted to the left and right ends of the roof 40 to prevent rainwater from entering from outside the machine. 47 is a lining.

Conventionally, only by fixing the roof to the cross rail,
Although there was a drawback that rainwater entering from the gaps of the fixtures such as bolts and nuts entered the cabin chamber, as described above, the positions of the fixtures 43 and 44 can guide the rainwater to the horizontal rails 40 and 40.
And the horizontal rail 40 is configured to be able to guide rainwater to the drainage channel 9b formed along the upper frame 9 of the cabin.
And is guided to the drainage channel 9b, so that there is no danger of seeping into the cabin. Further, when the fixing tools 43 and 44 are provided at the bottom of the groove 40a formed on the roof 40, the roof 40 has no ridges, so that it is easy to collect rainwater instead of impairing the aesthetic appearance. Even if rainwater enters through the tool, it can be drained and guided, which is advantageous.

The operation of the above example will be described. Cabin 6
Rain and car wash water falling on the upper side tends to enter the drainage channel 9b at the end of the roof 40. Although the weather strip 46 is provided at the end of the roof 40, it is difficult to enter the rainwater. However, the partially infiltrated rainwater is discharged and guided along the drainage channel 9b, and is discharged outside the machine from the front end.

[0012] When it comes to the top of the roof 40, the groove 40a
, And penetrates inward from the fixed portion of the bolt and nut, but these are guided to the drainage channel 9 b via the horizontal rails 40, 40. Meanwhile, rainwater falling on the front window 10 and the rear window 11 is wiped by wiper devices provided respectively.

The wiper device 20 of the rear window 11 includes a wiper 31 provided on a shaft protruding from the wiper driving unit to the front side.
Reciprocates. The wiper drive unit is a cushioning material 2
4, the vibration to the drive unit mounting base 25 can be reduced, and the vibration and impact of the rear window 11 can be reduced. There is little risk of damaging the internal structure of the part. In addition, the wiper shaft 29 and the like do not interfere with the through-hole 30 of the window glass by impact, and can withstand long-term use.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a main part.

FIG. 2 is an overall side sectional view.

FIG. 3 is a rear view.

FIG. 4 is a plan sectional view of a main part.

FIG. 5 is a front view of a main part.

FIG. 6 is a perspective view of a roof.

FIG. 7 is a sectional view of a roof.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Tractor body, 2 ... Front wheel, 3 ... Rear wheel, 4 ... Engine, 5 ... Mission case, 6 ... Cabin, 7, 7 ... Front support, 8, 8 ... Rear support, 9 ... Upper frame, 10 ... Front window , 11 ... rear window, 12 ... getting on and off door, 11 ...
Roof, 11a: outer roof, 11b: inner roof, 12: front rainwater gutter, 13: driver's seat, 14: handle post, 15: steering handle, 16: top link, 17, 17: lower link, 18: tilling machine ,
DESCRIPTION OF SYMBOLS 20 ... Wiper apparatus, 21 ... Hinge, 22 ... Wiper motor, 23 ... Gear case, 24 ... Buffer material, 25 ... Drive mounting base, 26 ... Fixing tool, 27 ... Support bracket, 28 ... Stud bolt, 29 ... Wiper shaft, Reference numeral 30: through hole, 31: wiper, 32: seal member, 33: rubber cover, 34: cover, 35: stopper, 36: opening, 37: connector,
40 Roof, 41 Cross rail, 42 Support bracket, 43 Bolt, 44 Nut, 45 Partition plate, 46 Weather strip

Claims (1)

[Claims] 1. A drive unit mounting base 25 is provided on the cabin 6 inside the window 11 via a buffer material 24, and a wiper drive unit such as a wiper motor 22, a gear case 23 is fixed to the mounting base via a support member 27. A wiper drive unit mounting structure in a work vehicle, wherein a wiper shaft protruding from the gear case side is provided so as to penetrate outside the window glass.