JPS61191415A - Cabin for tractor - Google Patents

Abstract

PURPOSE:To eliminate the need for a connecting member between front and side transparent plates and fully secure the field of front view by individually supporting the front transparent plate with a central frame and the side transparent plate with a connecting frame from downward and filling the gap between both transparent plates with transparent fillers. CONSTITUTION:The front side of a cabin main body 6 is provided with a front transparent plate 19 located at the upper side than a bonnet and extended between a pair of right and left front posts 9 and a pair of right and left side transparent plates 20 located at both right and left sides of the bonnet. In this case, a central frame 36 is provided at the central part between the respective front posts 9 corresponding to the bonnet 3 and a connecting frame 21 connects between both right and left sides of the central frame 36 and the lower ends of the respective front posts 9. As a result, the front transparent plate 19 is fit from downward between the respective front posts 9 and central frame 36 and the side transparent plate 20 is fit from downward between the central frame 36, front posts 9, and connecting frames 21. Besides, the gap 31 between the said transparent plates 19 and 21 is filled with transparent fillers 32 with elasticity.

Description

[Detailed description of the invention] <Industrial application field> The present invention relates to a tractor cabin.

<Prior Art> A cabin surrounding the driver's seat, steering wheel, etc. of a tractor is well known from the prior art, as disclosed in Japanese Utility Model Application Publication No. 58-19877. In this type of cabin, in order to ensure forward visibility, a front transparent plate is provided on the front side of the cabin body that extends above the bonnet and extends between a pair of left and right front pillars. Equipped with transparent side panels.

<Problems to be Solved by the Invention> However, conventionally, a connecting member is provided in the horizontal direction between the pair of left and right front pillars at the upper side of the bonnet, and this connecting member connects the front transparent plate and the side transparent plate below it. Since the connecting members were separated from each other, the field of view was blocked by the connecting member, making it impossible to secure a sufficient field of view.

<Means for Solving the Problems> The present invention is intended to solve these conventional problems, and as a specific means for that purpose, a In a tractor cabin equipped with a front transparent plate 19 extending between a pair of left and right front columns 9 on the sides, and a pair of left and right side transparent plates 20 located on both left and right sides of the bonnet 3,
A central frame 36 is provided in the center of the frame 36 corresponding to the bonnet 3, and the left and right sides of the central frame 36 and the lower ends of the pair of left and right front columns 9 are connected by a connecting frame 21, and the front transparent plate 19 is A pair of left and right side transparent plates 20 are fitted between the left and right pair of front columns 9 and the center frame 36 so as to be supported from below between the center frame 36, the front column 9, and the connecting frame 21, respectively. A gap 31 between the lower end of the front transparent plate 19 and the upper end of the side transparent plate 20 is filled with a transparent filler 32 having elasticity.

<Function> Since there is no connecting member between the front transparent plate 19 and the side transparent plates 20 on both sides below it, and a transparent filler 32 is inserted between them, a sufficient forward visibility can be ensured.

Further, since the front transparent plate 19 and the side transparent plates 20 are supported from below, and the filler 32 is made of elastic material, damage to each of them is reduced.

<Example> Hereinafter, the present invention will be described in detail with regard to the illustrated example.
In the figures and FIG. 2, 1 is a tractor body, 2 is an engine mounted on the front part of the tractor body, and is covered by a bonnet 3. Rear wheels 4 are supported on both sides of the rear of the tractor body 1 via a rear axle case 5 and the like. Reference numeral 6 denotes an integrated cabin mounted on the rear part of the tractor body 1, which includes a cabin body forming a skeleton body, a floor sheet 7 attached to the bottom side of the cabin body, and a seat seat 7 attached to the left and right sides of the cabin body. It has a ring fender 8.

The cabin body consists of a pair of left and right front struts 9, a pair of left and right rear struts 10, a pair of left and right intermediate struts 11 provided between the front and rear struts 9.10, and attached to the upper ends of these struts 9.10.11. A zenith frame 12 is provided, and a pair of foundation frames 13 in the front-rear direction are provided on the lower side on the left and right. The front end of the foundation frame 13 is supported by a bracket 14 projecting outward from the tractor body 1, and the rear end is supported by a bracket 15 on the rear axle case 5 via vibration isolators 16 and 17, respectively.

A partition plate 18 is provided on the front side of the cabin body so as to connect the lower ends of the pair of left and right front struts 9, and a front glass 19 as a front transparent plate and a side glass 20 as a side transparent plate are fitted. It is rare. That is, the bulkhead plate 18 has a central frame 36 formed in the center between the left and right pair of front columns 9 to correspond to the bonnet 3; It is provided with a connecting frame 21 to be connected, and is formed into an appropriately uneven shape to ensure strength. Note that a reinforcing member 22 is attached to the connecting frame 21. The central frame 36 of the bulkhead plate 18 has a panel portion 23, a handle 24, and a pedal 2 on the inside of the cabin.
5th class power is installed. The inside of the left and right pair of front struts 9,
On the lower side of the zenith frame 12, on the upper side of the central frame 36, on both left and right sides, and on the upper side of the connecting frame 21, ribs 26 to 29 for glass attachment are provided separately or integrally, as shown in FIGS. 3 to 5. The ribs 26 to 29 are provided with anti-vibration rubber 3 having an H-shaped cross section.
Each glass 19, 20 is fitted through 0.

The pair of left and right front struts 9 are formed in a shape such that the center portion in the vertical direction protrudes outward. The front glass 19 has a trapezoidal shape with straight upper and lower edges. The side glass 20 is fitted into a portion surrounded by a pair of left and right front struts 9 and a zenith frame 12.The side glass 20 has an inverted trapezoidal shape that is narrower at the bottom, and has a center frame 36, a front strut 9, and a connecting frame 21. It is fitted into the part surrounded by the front glass 19. And between the lower end of the front glass 19 and the upper end of the side glass 20, there is a sixth
As shown in the figure, a gap 31 approximately equal to the plate thickness T of these glasses 19 and 20 is provided, and the gap 31 is filled with a transparent adhesive 32 having elasticity as a filler after curing. , whereby the upper and lower glasses 19 and 20 are bonded and integrated. Although the front glass 19 is curved so as to protrude forward as shown in FIG. 7, it may be in the shape of a flat plate.

32a is a driver's seat, which is provided on the floor seat 7. 33 is a door, 34 is a side window, and 35 is a roof cover.

After the integrated cabin 6 with the above structure is assembled, it is lifted up with a crane or the like and mounted on the tractor body 1, and the vibration isolating material 16.
The front glass 19 and the side glass 20 are assembled in the following manner during manufacturing.

After the lower ends of the pair of left and right front struts 9 of the cabin body are connected by the central frame 36 and the connecting frame 21 to form a skeleton, the front struts 9, the zenith frame 12, the central frame 36, and the connecting frame 21 are provided with A continuous anti-vibration rubber 3 with an H-shaped cross section is attached to the ribs 26 to 29.
Insert 0.

Next, after positioning the front glass 19 as shown in the imaginary line in FIG. While fitting into the groove of the rubber 30, the lower edge is inserted into the vibration isolating rubber 3 of the central frame 36.
0 groove, and the load of the front glass 19 is transferred to the center frame 36.
Support it on the side. Next, as shown in FIG.
While aligning with one example of the vibration isolating rubber 30, push down from above to the bottom (arrow B) to fit the left and right side edges and lower end edge of this side glass 20 into the groove of the vibration isolating rubber 30. In this case, the side glass 20 has an inverted trapezoidal shape and is pushed into the vibration isolating rubber 30, so that it receives a reaction force in an upward pushing direction. Therefore, it is appropriate that the inclination angles α and β of both side edges of the side glass 20 are approximately 5 to 6 degrees as shown in FIG. Can be bonded without stress,
Improves durability.

After the side glass 20 is fitted in this way, as shown in FIGS. 8 and 10, the gap 31 between the upper and lower front glass 19 and the side glass 20 is closed using the holder 37. The thickness is determined to be approximately the same as the plate thickness T of 19.20.

The holder 37 is equipped with a pair of suction cups 39 with a diaphragm 38 and a turnbuckle 41 in the middle of a connecting rod 40 that connects the pair of suction cups 39. By operating the suction cup 39, the suction cup 39 can be attached to and released from glass or the like. Therefore, each suction cup 39 is suctioned to the front glass 19 and the side glass 20, and the turnbuckle 41 of the connecting rod 40 is
The gap 31 is adjusted by adjusting the expansion and contraction of. Then, the gap 31 is filled with a transparent adhesive 32, and the upper and lower front glass 19 and side glass 20 are bonded and integrated with this. The adhesive 32 used in this case may have elasticity and transparency after drying. The adhesive 32 is a -component type acetic acid type silicone adhesive, for example, manufactured by Three Bond Co., Ltd. under the trade name PANDO524A.
An adhesive having transparency, adhesive strength, weather resistance, heat resistance, cold resistance, and elongation of about 500% is suitable.

When filling the adhesive 32, the gap 31 is filled with the glass plate thickness T.
If the width is set to a certain extent, it is easier to fill the adhesive 32 than if it is too narrow, and it does not require a patch plate or the like compared to if it is too wide, resulting in very good workability. Also, adhesive 32
When filled, a portion of the left and right ends enters into the groove of the vibration isolating rubber 30 as shown in FIG. 11, for example, so that it becomes difficult to come off after drying. When the adhesive 32 hardens, the front glass 19 and the pair of left and right side glasses 20 are bonded to each other and become a single piece, so airtightness is obtained like a single sheet of glass, and the bonded portion is transparent. Since the thickness of the glass on the top is about T, when viewed from the driver's seat 32a,
Distortion at the bonded area is hardly a problem, and a sufficient field of view can be secured.

After the adhesive has hardened, the holder 37 can be removed. Note that after the front glass 19 and side glass 20 are fitted into the vibration isolating rubber 30, a wedge material 44 is fitted into the vibration isolating rubber 30 from inside the cabin to prevent them from coming off. The insertion may be performed after fitting the glass 19, 20, after adjusting the gap 31 with the holder 37, or after adhering.

The lower edge of the front glass 19 may be approximately straight from above the cutout, but it does not necessarily need to be in a straight line as in the embodiment.

Also, the front glass 19 and the side glass 20 may be attached with adhesive after being fitted individually, but the three pieces of glass 19 may be attached in advance.
．． 20 is placed in a predetermined position and fixed with a holder 37, and the adhesive 32 is put into the gap 31 and bonded.Then, while being held by the holder 37, it is fitted into the vibration isolating rubber 30 of the cabin body. Alternatively, the holder 37 may be removed.

Either of the front glass 19 and the side glass 20 may be fitted first.

Instead of the adhesive 32, a transparent filler such as a synthetic resin may be used.

The side glass 20, which has a smaller area than the front glass 19, may have a slightly thinner plate thickness than the front glass 19. Moreover, a transparent synthetic resin plate can be used instead of glass.

<Effects of the Invention> According to the present invention, the front transparent plate is supported by the central frame, the side transparent plates are supported from below by the connecting frame, and the gap between the two transparent plates is filled with a transparent filler. Unlike the conventional method, there is no need for a horizontal connecting member below the front transparent plate, and a sufficient field of view can be secured in this area. In addition, when the king of transparent plates is made into an integrated structure, if it is glass, it is difficult to cut it according to the shape, which significantly reduces the yield and increases the cost. However, according to the present invention, the three-part transparent plate Since each plate can be cut out separately, costs can be reduced while providing a wider field of view. Further, since the filler has elasticity and each transparent plate is supported separately from below, the transparent plates are not strained and damage to the transparent plates can be prevented.

[Brief explanation of drawings]

The drawings illustrate one embodiment of the present invention, and show the first embodiment of the present invention.
The figure is a front view of the cabin, Figure 2 is a side view of the same, Figure 3 is an enlarged view taken along the mm-m arrow in Figure 1, and Figure 4 is an IV-IV view of Figure 1.
An enlarged view in the direction of arrows, Figure 5 is an enlarged view in the direction of V-V arrows in Figure 1,
The figures are an enlarged view of the Vl-VI arrow in Fig. 1, Fig. 7 is a schematic cross-sectional plan view of the front glass section, Fig. 8 is an explanatory diagram of the manufacturing method, and Fig. 9
The figure is an explanatory diagram of the glass, FIG. 10 is a cross-sectional view of the state in which it is held by a holder, and FIG. 11 is an explanatory diagram of the state of rotation of the adhesive. 1-) Rakuta vehicle body, 6--integrated cabin, 9-front support, 12--zenith frame, 19-front glass (front transparent plate), 20
・Side glass (side transparent plate), 21. One connecting frame, 26-29
- Rib, 30 - Anti-vibration rubber, 31 - Gap, 32... - Adhesive, 36 - Center frame, 37 - Holder. Patent applicant: Kubota Iron Works Co., Ltd. Figure 1 WiZ diagram

Claims (1)

[Claims] 1. On the front side of the cabin body, there is a front transparent plate 19 extending above the bonnet 3 between the pair of left and right front pillars 9, and a pair of left and right side transparent plates located on both left and right sides of the bonnet 3. In the tractor cabin provided with a plate 20, a central frame 36 is provided in the center between the pair of left and right front struts 9, corresponding to the bonnet 3, and the left and right sides of this central frame 36 and the pair of left and right front struts are provided. 9 are connected by a connecting frame 21,
The front transparent plate 19 is supported from below between the left and right pair of front columns 9 and the center frame 36, and the left and right pair of side transparent plates 20 are supported between the center frame 36, the front column 9, and the connecting frame 21, respectively. A cabin for a tractor characterized in that a gap 31 between a lower end of a front transparent plate 19 and an upper end of a side transparent plate 20 is filled with an elastic transparent filler 32. 2. In the tractor cabin according to claim 1, the gap 31 between the front transparent plate 19 and the side transparent plate 20 is
A tractor cabin characterized in that the thickness T of these transparent plates 19 and 20 is approximately the same. 3. The tractor cabin according to claim 1 or 2, wherein the filler 32 is a transparent adhesive.