JPH071957A - Windshield opening and closing structure in the driving cabin of a work vehicle - Google Patents

Abstract

(57) [Summary] [Purpose] In a driving cabin of a work vehicle in which the windshield of the driving cabin can be opened and closed along the ceiling, it is intended to simplify the lower seal structure when the windshield is closed. [Structure] A lower stopper 15 for receiving a lower end portion of a windshield 9a is pressed from the rear against an opening 4b of the windshield as the windshield 9a is closed, and an inclined guide surface 15a for sealing and a downward direction. It is configured to have a receiving surface 15b for position regulation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving cabin of a working vehicle such as a backhoe, and more particularly, to a windshield opening / closing structure for a driving cabin of a working vehicle in which the windshield of the driving cabin can be opened and closed along the ceiling. Regarding

[0002]

2. Description of the Related Art Conventionally, in order to open and close the windshield of a driving cabin of a work vehicle along the ceiling, for example,
As disclosed in Japanese Utility Model Application Laid-Open No. 59-151968, a pair of upper and lower rollers are provided on both sides of the windshield, and guide frames for guiding the rollers are provided on both sides of the driving cabin. It can be opened and closed along the guide frame.

[0003]

As shown in FIG. 5, the openable / closable windshield 09a is adapted to be closed so as to overlap with the peripheral edge of the opening 04b of the driving cabin from the rear side. Glass 09a
The lower end of the windshield 09a is received by a lower stopper 015, and the airtightness of the lower end of the windshield 09a is provided with a lip portion c ′ that presses against the front surface of the windshield 09a from a rubber seal 04c provided at the periphery of the opening 04b of the cabin. It is configured to prevent the invasion of etc.

The above-mentioned conventional structure has a structure in which the lower end of the windshield and the sealing function are separately performed, so that a good seal can be obtained even if the windshield rattles in the front-rear direction as a seal member. In order to exert the effect, a rubber seal with a lip having a special shape is required, resulting in a high cost and a disadvantage that the sealing function is deteriorated due to wear of the lip portion.

The object of the present invention is to eliminate the above drawbacks by a simple structural improvement.

[0006]

In order to achieve the above object, the present invention is characterized in that the windshield of a driving cabin is configured to be openable and closable along the ceiling, and the lower end of the windshield is a lower stopper. In a windshield opening / closing structure for a driving cabin of a work vehicle that receives and closes the opening of the windshield from the rear side, a lower stopper that receives the lower end of the windshield is moved forward as the windshield is closed. It has a shape including an inclined guide surface that is pushed out and a receiving surface for restricting the position downward.

[0007]

As shown in FIG. 2, the windshield 9 is attached to the lower stopper 15 that receives the lower end of the windshield 9a.
The lower end of a is pushed forward to open the opening 4b of the cabin 4.
A sealing material having a simple shape is sufficient by providing the sealing material 4c provided on the peripheral edge of the sheet with a guide function.

[0008]

As described above, since the lower stopper serves to receive the windshield and improve the airtightness, a simple seal material can be used and the cost can be reduced and the seal material can be worn. However, a good sealing effect can be obtained.

[0009]

EXAMPLES Examples of the present invention will be described below with reference to a driving cabin of a backhoe.

As shown in FIG. 4, a crawler-type traveling machine base 2 equipped with a dozer device 1, a prime mover 3 and a driving cabin 4 are provided.
The swivel base 5 provided with is attached, and the backhoe device 7 is attached to the front part of the swivel base 5 via the swing bracket 6 to form a backhoe with a dozer.

The operation cabin 4 has a door 8 on the left side thereof which can be opened and closed rearward of the machine body about the longitudinal axis X, and as shown in FIG. 1, the windshield 9 on the front side of the operation cabin 4 is the operation cabin. 4 is configured to be openable and closable along the ceiling 4a.

The windshield 9 is divided into two parts in the vertical direction, the upper windshield 9a is configured to be openable / closable along the ceiling 4a, and the lower windshield 9b is fixed as a lower wall of the driving cabin 4a. It is provided in.

Next, the opening / closing structure of the upper windshield 9a will be described.

The upper windshield 9a is provided with a pair of left and right rollers 10, 10 on the upper and lower sides thereof, and
A grip 11 and a pair of left and right fixing lock pins 12, 12 capable of protruding in the lateral direction are provided on the upper portion.

On the other hand, a front guide rail 13a and a ceiling guide rail 13b for the rollers 10, 10 are provided on the inner surface of the driving cabin 4, and
The lock pin engaging pin holes 14 for fixing the windshield 9a in both front and rear sides of the ceiling 4a in the open / closed state of the windshield 9a, respectively.
a and 14b are provided, and a stopper 15 for receiving the windshield 9a is provided below the front guide rail 13a, and a stopper 16 for regulating the rear position is provided near both rear sides of the ceiling 4a. .

The lower stopper 15 for receiving the lower end portion of the windshield 9a has an inclined guide surface 15a for pushing the lower end portion of the windshield 9a forward as the windshield 9a is closed, and a downward position regulating receiver. The front surface of the windshield 9a is pushed forward, so that the rubber sealing material 4c provided on the periphery of the opening 4b of the windshield 9a comes in close contact with the rear surface to prevent rainwater from entering. It is designed to measure.

A part of the lower end of the front guide rail 13a is bent forward and downward to prevent the roller 10 from coming off, so that the roller 10 can be smoothly guided from the lower stopper 15 to the front guide rail 13a. Has become.

[Other Embodiment] In the above embodiment, the front guide rail 13a and the ceiling guide rail 13b are separately mounted on the inner surface of the frame constituting the operation cabin 4, but the operation cabin 4 is not shown. A frame for forming a guide rail groove may be formed in the frame.

Further, the windshield may be a transparent plastic plate.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a driving cabin.

FIG. 2 is an action diagram showing a closed state of a windshield.

FIG. 3 is a vertical sectional front view showing an upper portion of a driving cabin.

[Fig. 4] Overall side view

FIG. 5 is a vertical sectional side view of a conventional structure.

[Explanation of symbols]

 4 Driving Cabin 4a Ceiling 4b Opening 9a Windshield 15 Lower Stopper 15a Inclined Guide Surface 15b Receiving Surface

Claims (1)

[Claims] 1. A windshield (9a) of an operating cabin (4) is configured to be openable and closable along a ceiling (4a), and a lower end of the windshield (9a) is received by a lower stopper (15). In a windshield opening / closing structure of a driving cabin of a work vehicle that is closed so as to overlap the opening (4b) of the windshield from behind, a lower stopper (15) for receiving a lower end portion of the windshield (9a) is attached to the front. In a driving cabin of a work vehicle having a shape including an inclined guide surface (15a) pushed forward as the glass (9a) is closed and a receiving surface (15b) for downward position regulation. Windshield opening and closing structure.