JPH071958A - Front glass opening and closing structure in operation cabin of work vehicle - Google Patents

Abstract

PURPOSE:To reduce a cost in a looseness regulating structure in a front glass opening condition, in the case of a front glass opening and closing structure in the operation cabin of a work vehicle constituted so that front glass of the operation cabin can be opened and closed along the ceiling. CONSTITUTION:A pair of left and right stoppers 16 and 16 are arranged to regulate looseness in the vertical and lateral directions of front glass 9a by coming into contact with the upper side corner parts of the front glass 9a running along the ceiling 4a.

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, so that the windshield is It can be opened and closed along the guide frame.

[0003]

In the above-mentioned conventional structure, it is impossible to mount the windshield on the guide frame so as to be openable and closable without improving the dimensional accuracy of the windshield and the dimensional accuracy of the guide frame and the assembling accuracy. Therefore, in order to regulate the rattling of the windshield in the left-right direction when the windshield is open where the rattling noise is generated, the side wall portion near the ceiling of the driving cabin is generally contacted with the side surface of the windshield. A pair of right and left stoppers for regulation with play are provided.

However, since the stopper for rattling is provided to restrict only the rattling of the windshield in the left and right direction, it is not possible to regulate the rattling in the vertical direction. However, there is a disadvantage in that a separate stopper for vertically controlling must be provided.

An object of the present invention is to reduce the cost by devising a rattling regulation structure for the windshield.

[0006]

The characteristic configuration of the present invention for achieving the above object is to contact the ceiling of a driving cabin with an upper corner of the windshield along the ceiling so that the windshield is The point is that a stopper is provided to regulate backlash in the vertical and horizontal directions.

[0007]

As shown in FIG. 3, when the windshield 9a is opened, a pair of left and right stoppers 16 and 16 contacting the upper corners of the windshield 9a are provided. The pushing force in the downward direction and the pushing force in the left and right directions are exerted, and the windshield 9a
The rattling in the vertical direction and the horizontal direction will be restricted.

[0008]

As a result of the above construction, in the open state of the windshield, the pair of left and right stoppers that come into contact with the upper corners of the windshield restrict the backlash in the vertical and horizontal directions of the windshield. As compared with the case where the vertical movement and the horizontal movement of the windshield are performed by separate stoppers, the cost can be reduced due to the dual use of the members.

[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.

As shown in FIG. 1, the upper windshield 9a is provided with a pair of left and right rollers 10 and 10 on the upper and lower sides thereof, and a pair of left and right fixing parts 11 and a pair of left and right fixing parts which can project laterally are provided on the upper portion. It is provided with lock pins 12, 12.

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, 14b are provided, and a lower stopper 15 for receiving the windshield 9a is provided below the front guide rail 13a, and a regulation stopper for preventing rattling of the windshield 9a at an intermediate portion in the front-rear direction of the ceiling 4a. 1
6 and a rear stopper 17 for regulating the rear position is provided near both sides of the rear portion.

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 front surface of the windshield 9a comes into close contact with the sealing material around the opening of the windshield 9 from the rear side to prevent rattling in the closed state of the windshield 9a and rainwater. It is trying to prevent the invasion of.

As shown in FIG. 2, 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, and the roller 10 is moved from the lower stopper 15 to the front guide rail 13a. To guide you smoothly.

As shown in FIG. 3, the pair of left and right stoppers 16 provided at the intermediate portion of the operation cabin ceiling 4a in the front-rear direction is composed of stoppers having a pressing force adjustable by sticking rubber to the tips of the bolts. The upper edge of the windshield 9a along the ceiling 4a is brought into contact with the windshield 9a to regulate the vertical and horizontal rattling of the windshield 9a.

The stopper 17 for regulating the rear position is also provided.
Similar to the stopper 16, is constituted by a stopper whose position is adjustable by baking and fixing rubber on the tip of the bolt.

[Other Embodiment] In the above embodiment, the front guide rail 13a and the ceiling guide rail 13b are separately attached to 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 plastic plate.

It should be noted that reference numerals are given in 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]

1] Vertical side view of the operating cabin

FIG. 2 is an operation diagram showing an open / 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

[Explanation of symbols]

 4 Driving cabin 4a Ceiling 9a Windshield 16 Stopper

Claims (1)

[Claims] 1. A windshield opening / closing structure for a driving cabin of a work vehicle, wherein the windshield (9a) of the driving cabin (4) is configured to be opened and closed along the ceiling (4a). A pair of left and right stoppers (4a) that come into contact with the upper corners of the windshield (9a) along the ceiling (4a) to regulate vertical and horizontal rattling of the windshield (9a) ( 16), A windshield opening / closing structure in a driving cabin of a work vehicle provided with (16).