JP2006273073A - Front grille for work vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To avoid the generation of a clearance due to bending, and to prevent the entry of dust, in a screen covering an opening portion of a front grille. <P>SOLUTION: The front grille 5 covering a front side of a prime mover portion 2 is provided with the opening portions 5a, 5b for taking in cooling air on a front surface and a side surface of the front grille 5. In order to cover these opening portions 5a, 5b by the screen 8 capable of ventilating, a front surface covering portion 8a covering a front surface opening portion 5a of the front grille 5, and a side surface covering portion 8b covering a side surface opening portion 5b are provided on the screen 8. Folding portions 8c folding outward are formed on upper and lower end edge portions of the side surface covering portion 8b. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a work vehicle front grill provided on a work vehicle such as a tractor.

Generally, a work grill such as a tractor is provided with a front grill that covers the front of a prime mover (see, for example, Patent Document 1). The front grill described in Patent Document 1 includes openings on the front and side surfaces for taking in cooling air, and covers these openings with a screen (such as a metal mesh or punching metal) that can be ventilated. To prevent intrusion.
JP 2004-1776 A

  By the way, when fixing the screen to the front grille made of resin with screw screws, the screw screw mounting portion is placed around the side opening (especially the upper and lower edges) of the front grille due to the relationship of the punching die. Since it is difficult to provide the screen, the screen may not be screwed at the site. However, the unscrewed portion of the screen is not rigid enough to bend easily, so that a gap is formed between the front grille and the screen, and dust may enter.

  The present invention has been created in view of the above circumstances and has been created for the purpose of solving these problems, and is a front grill for a work vehicle that covers the front of a prime mover, and includes a front surface and a side surface of the front grill. Are provided with openings for taking in cooling air, and when these openings are covered with a ventable screen, the screen includes a front cover portion covering the front opening portion of the front grill, and a side opening portion. And a side cover portion that covers the cover, and a bent portion that is bent outward is formed at an upper edge and / or a lower edge of the side cover. In this way, since the rigidity of the screen is enhanced by the bent portion, even if it cannot be screwed to the front grille, the generation of a gap due to bending can be avoided, and the intrusion of dust can be prevented.

  Next, embodiments of the present invention will be described with reference to the drawings. In FIG. 1 to FIG. 3, reference numeral 1 denotes a traveling machine body of a tractor, and the traveling machine body 1 includes a prime mover section 2 at the front of the body. An engine (not shown) is mounted on the prime mover unit 2, and the power of the engine is shifted by a transmission (not shown), transmitted to the front wheels 3 and the rear wheels 4, and attached to the rear part of the machine body. By traveling to a work machine (not shown), work traveling such as tillage work becomes possible.

  The prime mover section 2 is covered with a front grill 5, a side panel 6, a bonnet 7, and the like. The tractor according to the present invention is characterized by the front grille 5 covering the front of the prime mover unit 2. Hereinafter, the configuration of the front grille 5 will be described with reference to FIGS. 4 to 7.

  As shown in these drawings, the front grille 5 is a planar molded resin product, and openings 5a and 5b for taking in cooling air are formed on the front and side surfaces thereof. The openings 5a and 5b are covered with a screen 8 having air permeability to prevent intrusion of dust and the like. The screen 8 is preferably a member having a certain degree of rigidity. In this embodiment, a punching metal is used as the screen 8.

  When the screen 8 is fixed to the resin front grille 5 with screw screws 9, screw attachment portions 5c (cylindrical convex portions) need to be formed around the openings 5a and 5b in the front grille 5. However, since it is difficult to provide the screw attachment portion 5c around the side surface opening 5b, particularly at the upper and lower end edges of the side surface opening 5b due to the relationship of the punching die, the screen 8 is not screwed at that portion. There is. In this case, the portion of the screen 8 that is not screwed has insufficient rigidity and is easily bent, so that a gap is formed between the front grill 5 and the screen 8 and dust may enter.

  The screen 8 integrally includes a front cover portion 8a that covers the front opening portion 5a of the front grill 5 and a side cover portion 8b that covers the side opening portion 5b. Since many screw mounting portions 5c described above are formed around the front opening 5a in the front grill 5, the front cover portion 8a of the screen 8 can be fixed without a problem with the screw screws 9 at the periphery. Is possible.

  On the other hand, since the nut storage portion 5d is formed at the rear end edge of the side opening 5b, the rear end edge of the side cover portion 8b of the screen 8 can be fixed with the bolt 10 and the nut 11. However, the upper end edge and the lower end edge of the side cover portion 8b are not screwed. Therefore, the present invention has a configuration in which a bent portion 8c that bends outward is formed at the upper edge and / or lower edge of the side cover portion 8b. In this way, since the rigidity of the screen 8 is enhanced by the bent portion 8c, even if it cannot be screwed to the front grill 5, it is possible to avoid the generation of a gap due to bending and to prevent the intrusion of dust. Become.

  Moreover, in the front grill 5 of this embodiment, the rib 5e which protrudes inward is formed in the peripheral part of the side surface opening part 5b, and the bending part 8c of the screen 8 is made to follow the outer peripheral surface. If it does in this way, since it will be in the state where the bending part 8c is externally fitted to the rib 5e, generation | occurrence | production of the clearance gap by the bending of the screen 8 can be avoided more reliably.

  According to the present embodiment configured as described, the front grille 5 covers the front of the prime mover unit 2, and the openings 5 a and 5 b for taking in cooling air are provided on the front and side surfaces of the front grille 5. In addition, when the openings 5a and 5b are covered with the screen 8 that can be ventilated, the screen 8 includes a front cover portion 8a that covers the front opening portion 5a of the front grill 5 and a side surface that covers the side opening portion 5b. The cover 8b and the side cover 8b are formed with bent portions 8c that are bent outwardly at the upper and lower edge portions of the side cover 8b, whereby the rigidity of the screen 8 is enhanced by the bent portion 8c, and as a result. Even if the front grille 5 cannot be screwed, it is possible to avoid the generation of a gap due to bending and prevent the intrusion of dust.

  In addition, in the present embodiment, since the bent portion 8c of the screen 8 is fitted on the outer peripheral surface of the rib 5e formed at the peripheral edge of the side opening 5b, the generation of a gap due to the bending of the screen 8 is more reliably performed. It can be avoided.

It is a side view of a tractor. It is a top view of a tractor. It is a front view of a tractor. It is a rear view of a front grill. It is a perspective view of a front grill which shows the state where a screen was attached. It is a perspective view of a front grill which shows the state where the screen is not attached. It is a perspective view of a screen.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Traveling machine body 2 Motor | power_engine part 5 Front grille 5a Front opening part 5b Side opening part 5c Screw mounting part 5d Nut accommodating part 5e Rib 6 Side panel 7 Bonnet 8 Screen 8a Front cover part 8b Side cover part 8c Bending part 9 Screw screw 10 Bolt 11 Nut

Claims (1)

  A front grille for a work vehicle that covers the front of the prime mover part, and provided with openings on the front and side surfaces of the front grille for taking in cooling air, and covering these openings with a screen that can be ventilated, The screen includes a front cover portion that covers the front opening portion of the front grille, and a side cover portion that covers the side opening portion, and is provided outwardly at the upper edge and / or lower edge of the side cover portion. A front grille for a work vehicle, characterized in that a bent portion is formed.

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