JPH0858468A - Head lamp installation structure of working vehicle - Google Patents

Abstract

PURPOSE: To improve installation workability of a head lamp to a bonnet by regulating a position of the head lamp in the horizontal direction against the bonnet by way of inserting a projection into a hole. CONSTITUTION: A head lamp 16 is fit on a front part of a bonnet 27, and the fit head lamp 16 is fixed on the bonnet 27. As a fixing means, a vertically directed hole UH is provided on an upper end part of a bonnet main body 27A, and a projection 32U is inserted upward into the hole UH. Thereby, a position of an upper end part on a light grill 16a in the horizontal direction against the bonnet main body 27A is regulated. Similarly, a position of a lower end part on the light grill 16a in the horizontal direction against a bulkhead plating 27B is regulated by providing a vertically directed hole DH on the bulkhead plating 27B and inserting a projection 32D downward into the hole DH. Consequently, it is possible to fix the head lamp 16 on the bonnet 27 without using a bolt and a nut.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a headlight mounting structure for a work vehicle such as a tractor. More specifically, the headlight is fitted to the front part of the bonnet, and a fixing means for fixing the fitted headlight to the bonnet. Regarding the structure provided.

[0002]

2. Description of the Related Art Conventionally, a headlight is fixed to a bonnet with bolts and nuts. That is, the fixing means was composed of bolts and nuts. In particular, when the portion of the headlight that is attached to the hood is a resin product such as acrylic resin, the bolt is an insert bolt.

[0003]

However, in the case of the above-mentioned conventional technique, the headlight is attached to the bonnet by bolts and nuts which require a cumbersome operation such as a tightening operation, and thus the workability of attachment is lacking. An object of the present invention is to improve workability of attaching the headlight to the hood.

[0004]

According to a first aspect of the present invention, there is provided a headlight mounting structure for a work vehicle according to the present invention, wherein the fixing means is configured so as to face an upper end portion of the headlight of the bonnet in a vertical direction. And a top hole of the headlight, one of which has a vertical hole for position regulation, and the other hole of which is inserted into the hole to regulate the horizontal position of the upper end portion of the headlight with respect to the hood. A plurality of holes are formed in each of the bonnet, and a vertically oriented hole for position regulation is formed in one of the lower end portion of the headlight and the portion where the lower end portion of the bonnet is vertically opposed to the lower end portion of the headlight. On the other hand, a plurality of vertical projections that are inserted into the holes and regulate the horizontal position of the lower end portion of the headlight with respect to the hood are provided. It lies in the fact that is formed.

[0005]

[Function] Since the headlight is fixed to the bonnet in a position-restricted state by inserting the protrusion into the hole, by using the bolt / nut that is cumbersome to operate, by assembling the headlight into the bonnet so that the protrusion is inserted into the hole. Without, the headlight can be fixed to the bonnet.

In particular, as will be shown in the examples to be described later, when the headlight mounting portions such as the upper end portion and the lower end portion of the headlight and the headlight mounting portion of the bonnet are resin molded products, protrusions formed on them. Since holes and holes can be integrally formed as a part of resin molding of the resin molded product, the work of mounting the protrusions and the work of forming holes are not necessary.
It can be implemented at low cost.

[0007]

Therefore, according to the present invention, it is possible to provide a headlight mounting structure for a work vehicle in which the headlight can be fixed to the bonnet with good workability.

[0008]

[Example] An example of application to an agricultural tractor will be shown.

As shown in FIG. 1, an agricultural tractor comprises a pair of left and right front wheels 1 for steering and driving, and a front frame 2 in a front-rear and lateral orientation, which is fixed to a crankcase 4 of an engine 3 so that a pair of left and right driving wheels is provided. The rear transmission case 6 equipped with the rear wheels 5 is attached to the rear clutch housing 7 of the engine 3.
In addition, an airframe frame structure that is fixedly connected by a connecting frame member 8 is provided. A rear frame 9 having a gate-shaped front view is fixedly connected to the clutch housing 7. The rear mission case 6 includes a hydraulic continuously variable transmission 10
Has been assembled. Reference numeral 11 is a steering wheel, and 12 is a driver's seat.

As shown also in FIG. 2, an engine cooling radiator 14, a battery 15, and a headlight 16 are incorporated in an engine room 13 in which the engine 3 is housed.

The radiator 14 is arranged in the front part of the engine 3, the battery 15 is arranged in the lower part of the front part of the radiator 14, and the headlight 16 is arranged in the front part of the radiator 14. The upper part of the above, that is, the upper part of the battery 15 is arranged. F is a cooling fan driven by the fan belt FB.

The battery 15 is loaded and supported by a mounting base 19 which is connected and supported by the front frame 2, and a fixed frame 20 having a gate-shaped front view is fixedly connected to the mounting base 19. That is, the mounting table 19 and the fixed frame 2
One frame structure fixed to the front frame 2 from 0 is configured.

As shown in FIG. 3, the headlight 16 includes a pair of left and right headlamps 16A having a lens,
The head cover 16A includes a light cover unit 16B arranged in a front portion of the head lamp 16A so as to extend to a side portion.

As shown in FIGS. 8 and 9, the light cover unit 16B includes a series of integrated light grills 16a made of synthetic resin, and left and right portions of the light grill 16a located in front of the headlamps 16A. A pair of left and right translucent covers 16b and a light grill 16a made of synthetic resin (acrylic resin, etc.) mounted on the central part of the light grill 16a, which is located between the cover mounting parts and is made of lath metal for securing air permeability. Consists of.

The means for attaching the cover 16b to the light grill 16a is as shown in FIGS.
6b is a means for fitting and fixing 6b from the front to the light grill 16a, and the cover 16b is fixed in the left and right and up and down directions with respect to the light grill 16a by being fitted into the light grill 16a, and is fixed by the fixing means. The position is fixed in the front-back direction. The fixing means dispersely forms protruding step portions 16c for engagement on the light grill 16a, and automatically engages the protruding step portions 16c with the cover 16b upon fitting, so that the cover 16b moves forward and backward with respect to the light grill 16a. It is a means for integrally forming the engaging claw 16d for fixing the position in the direction.

The cover structure for covering the engine room 13 will be described. As shown in FIGS. 2 and 3, a bonnet 27 for covering the upper surface, front surface, left and right side surfaces of the upper part of the engine room 13 and the lower part of the engine room 13 are provided. A pair of left and right side covers 28 are provided to cover left and right side surfaces of a lower rear portion behind the battery installation portion, and a front cover 29 is provided to cover front and left and right side surfaces of the front battery installation portion of the lower portion. There is.

The bonnet 27 has a horizontally closed posture by swinging up and down around a laterally-oriented horizontal axis X with the rear end as a fulcrum, and an open posture in which the front end is positioned diagonally forward and upward with respect to the rear end. It is switchable, and is attached to the rear frame 9 so as to be swingable up and down. The light cover unit 16B of the headlight 16 is fitted and fixed to the front portion, and the headlamp 16A is incorporated. .

The bonnet 27 is attached to the rear frame 9 so as to be vertically swingable as shown in FIGS.
The bonnet main body 27A whose front part is formed so as to form the upper side part and the left and right side parts of the fitting part of 6B, the lower side part of the fitting part, and the bottom of the headlamp installation part are formed. In this way, the partition plate 27B attached to the bonnet main body 27A and the reinforcing stay 27 for connecting the lower ends of the left and right side plate portions of the bonnet main body 27A near the front part
With C and. In other words, the front surface of the bonnet 27 and the front left and right side portions connected to the front surface are the light cover unit 1
It is formed from 6B.

Main bonnet 27A of the partition plate 27B
5, the bracket Br is fixed to each of the lower ends of the left and right side plate portions of the bonnet main body 27A, and the rear portions of the left and right ends of the partition plate 27B are attached to the bracket Br by bolts B1 and nuts N1. The partition wall plate 27B is fixed to the top plate portion near the front portion of the bonnet main body 27A at one end, and is fixed to the upper side portion of the bonnet main body 27A at the other end by a plate-shaped frame body 30 having a substantially U shape. The left and right central portions of the headlamp 1 are fastened and fixed to each other via bolts B2 and nuts N2. As shown in FIG.
The mounting seat 31 of 6A is stamped and formed.

Both ends of the reinforcing stay 27C are fixed to the bracket Br by welding.

The fixing means for fixing the light cover unit 16B in the bonnet 27 in a fitted state has a vertically-oriented hole UH on the upper side of the bonnet main body 27A and a light grill 16a of the light cover unit 16B.
And a plurality of upwardly projecting projections 32U for restricting the horizontal position (position in the front-rear, left-right direction) of the upper end portion of the light grill 16a with respect to the bonnet main body 27A (bonnet 27) by being inserted into the hole UH. A vertical hole DH is inserted into the plate 27B and the hole DH is inserted into the light grill 16a to regulate the horizontal position (front-rear left-right direction position) of the lower end portion of the light grill 16a with respect to the partition plate 27B (bonnet 27). It is configured by forming a plurality of downwardly-projecting protrusions 32D. Further, the load support of the light cover unit 16B, that is, the position fixing to the bonnet 27 downward, is performed by loading the light grill 16a on the partition plate 27B. The holes UH, DH
Both penetrate vertically, and the protrusions 32U, 32
D is formed integrally with the light grill 16a. That is, the light grill 16a is integrally formed with the protrusions 32U and 32D.

The procedure for assembling the front part of the hood 27 incorporating the headlight 16 will be described. As shown in FIG. 6, the light grill 16a of the light cover unit 16B is shown.
The protrusion 32U formed on the upper end of the bonnet 27A
Headlamp 16A in that state.
The partition plate 27B attached with is attached to the bonnet main body 27A so that the protrusion 32D of the light grill 16a is inserted into the hole DH formed in the partition plate 27B.

The bonnet 27 has its front portion loaded and supported by the fixed frame 20 in the closed position, and the unlocking locking means for fixing the bonnet 27 in the closed position is shown in FIGS. As shown in detail in FIG. 4, the fixing pin 33 is fixed to the fixed frame 20, and the mounting frame body 34 connected to the plate-shaped frame body 30 is attached to the mounting frame body 34 so that the bonnet 27 is in the closed posture and around the longitudinal axis P. A lock metal fitting 35, which can be engaged and disengaged with respect to the fixed pin 33 by rocking, is prevented from moving upward by being engaged, and the rock metal fitting 35 is provided with a rocking force to an engaging posture. A lock spring 36 is provided, which swings above the bonnet 27 about the vertical axis Y to swing the lock fitting 35 against the swinging force in a disengaged posture. It is formed by arranging the operating member 37 for causing.

The lock fitting 35 has a hood 27.
The lock pin 35 is brought into contact with the locking pin 35 to swing to the disengagement posture against the swinging force, and the contact action is released when swinging to the closed posture to lock. A cam surface 35a is formed to allow the metal fitting 35 to swing to the engagement posture by the swinging force. That is, the lock fitting 35 is configured to automatically engage with the fixing pin 33 when the bonnet 27 swings to the closed posture. The operation tool 37 is supported by the plate frame body 30 and the attachment frame body 34.

A pair of left and right keyhole-shaped mounting holes 45 are formed in the front portion of the bonnet 27, that is, the partition plate 27B, and each of the mounting holes 45 has a closed posture of the bonnet 27. Fixed frame 2 with rocking
The bonnet 27 is allowed to swing to the closed position by being pressed against the upper surface of 0 and compressed and deformed, and when the locking of the bonnet 27 by the locking means is released, the elastic restoring force of the bonnet 27 closes the bonnet 27. A compression coil spring 44, which pushes up slightly upward (open side), is mounted by screwing. It should be noted that one end of the compression coil spring 44 contacts the reinforcing stay 27C to rotate the compression coil spring 44 in the loosening direction with respect to the partition plate 27B (the partition plate 2).
7B is extended so as to form a stopper portion 44S that prevents the rotation in the direction of separating from 7B. That is, the reinforcement stay 27C is used to prevent the compression coil spring 44 from coming off, thereby simplifying the structure by sharing the members. The compression coil spring 44
A resin cap 45 forming a contact surface with the lower seat 43B is elastically fitted and fixed to the lower end of the.

Of course, when the partition plate 27B and the reinforcing stay 27C are attached to the bonnet main body 27A and then the compression coil spring 44 is attached to the partition plate 27B, the stopper portion 44S is attached to the reinforcing stay 27C.
Since it is impossible to assemble the compression coil spring 44 in a rotation preventing state in which the partition plate 27B is brought into contact with the partition wall plate 27B, the partition plate 27B is assembled with the compression coil spring 44.

The side cover 28 is for opening and closing the side surface of the engine room 13 by being attached and detached, and the front cover 29 is also for opening and closing the front portion of the engine room 13 by being attached and detached.

As shown in FIG. 10, the end portion of the top plate portion of the front cover 29 which enters below the front portion of the hood 27 is bent and erected as a reinforcing rib R. The lower end of the bonnet 27 and the front cover 2 are brought into close contact with the lower surface of the partition plate 27B of the bonnet 27 while elastically deforming.
A sealing material 52 is fitted and fixed so as to block a gap from the upper end of 9 and prevent air and water from entering the engine room 13 from the outside through the gap. The sealing material 52 also functions as a cushioning material that absorbs an impact when the bonnet 27 is closed.

[Other Embodiments] In the above embodiment, the headlight 16 divided into the light cover unit 16B and the headlamp unit 16A is targeted, and the light cover unit 16B of the headlights 16 is mounted. However, when the headlight 16 is configured as a single unit, the unitized headlight 16 is mounted as an attachment target.

In the above embodiment, the projection 32U is formed on the headlight 16 side and the hole UH is formed on the bonnet 27 side, so that the bonnet 27 at the upper end portion of the headlight 16 (light cover unit 16B) is formed.
However, the protrusion 32U is formed on the bonnet 27 side and the hole UH is formed on the headlight 16 side.
The position of the upper end portion of the (light cover unit 16B) with respect to the bonnet 27 may be restricted. In the above embodiment, the protrusion 32 is provided on the headlight 16 side.
By forming a hole DH on the side of the hood 27 and a hole DH on the side of the hood 27, the position of the lower end portion of the headlight 16 (light cover unit 16B) is regulated with respect to the hood 27. Alternatively, the holes DH may be formed on the headlight 16 side to restrict the position of the lower end portion of the headlight 16 (light cover unit 16B) with respect to the hood 27.
In short, the formation destinations of the protrusions 32U and 32D and the holes UH and DH can be appropriately changed.

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 structures of the accompanying drawings by the entry.

[Brief description of drawings]

[Figure 1] Side view of work vehicle

[Figure 2] Side view of the engine room

FIG. 3 is an enlarged vertical side view of the front part of the bonnet.

FIG. 4 is an enlarged vertical front view of the front part of the hood.

FIG. 5 is an enlarged bottom view of the front part of the bonnet.

FIG. 6 is an exploded enlarged vertical side view showing an assembly procedure of a front hood and a light cover unit.

FIG. 7 is a plan view of a partition plate.

FIG. 8 is an exploded front view of the light cover unit.

FIG. 9 is a vertical sectional side view showing an assembling procedure of the light cover unit.

FIG. 10 is an enlarged vertical cross-sectional view of the main part of the partition plate.

[Explanation of symbols]

 27 bonnet 16 headlight UH hole 32U protrusion DH hole 32D protrusion

Claims (1)

[Claims] 1. A working vehicle comprising a headlight (16) fitted to a front portion of a bonnet (27), and a fixing means for fixing the fitted headlight (16) to the bonnet (27). To make up the means,
A portion of the bonnet (27) that vertically opposes the upper end portion of the headlight (16) and one of the upper end portions of the headlight (16) have vertical holes (UH) for position regulation, and the other end. The projection (3) in a vertical position, which is inserted into the hole (UH) of the headlight (16) to regulate the horizontal position of the upper end portion of the headlight (16) with respect to the hood (27).
2U) are formed in plurality, and one of a lower end portion of the headlight (16) and a lower end portion of the bonnet (27) that faces the lower end portion of the headlight (16) in the vertical direction. A vertical hole (DH) for position regulation, and a hole (DH) in the other for regulating the horizontal position of the lower end portion of the headlight (16) with respect to the hood (27). A work vehicle headlight mounting structure in which a plurality of posture protrusions (32D) are formed.