JPH06183309A - Head guard construction of industrial vehicle - Google Patents

Abstract

PURPOSE:To maintain required strength and function, lighten the weight, lower the height of the center of gravity and improve the stability of the head guard ceiling of an industrial vehicle. CONSTITUTION:Props 2, 3, 4, 5 on front/rear and right/left of a head guard, left and right members 7, 6 for constructing a roof unit and the maximum three cross members 8, 9, 10 in the longitudinal direction are formed of steel material and a top guide 1 integrally formed is made of resin having required strength and function.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a head guard structure for industrial vehicles such as forklift trucks.

[0002]

2. Description of the Related Art FIG. 1 is an external perspective view of a conventional forklift truck. In the figure, A is a vehicle body, B is a fork device,
H is a head guard.

FIG. 2 is a perspective view for explaining the structure of a conventional head guard, and FIG. 3 is a perspective view for explaining the details of the head guard ceiling portion. In the figure, among the right front leg a, the right rear leg b, the left front leg c, and the left rear leg d, the right front leg a and the rear leg b, and the left front leg c and the rear leg d are integrated structure, the ceiling part e is attached with bolt f. An intake port g for introducing outside air into an air cleaner (not shown) is provided on the right rear leg b, and a cover h is attached to the intake port g. i is a vinyl hood for preventing rainwater from splashing on the operator. In addition to the configuration of the conventional head guard described with reference to FIG. 2, the front, rear, left and right legs are separately attached to the ceiling portion in addition to FIG.

[0004]

Head guard ceiling portion e
As shown in FIG. 3, the front gutter j, the rear gutter k, the left and right angles m, m, the punching metal p, the round pipe q, and the flat plate r are welded.

[0005]

The above-described conventional head guard structure has the following problems. (1) As shown in FIG. 3 above, the ceiling of the head guard is welded with steel plate members, so most of the appearance has a straight line portion, and even if it is better to round the design, it is better to form it. It is difficult to form a round shape due to the necessity of a mold and processing restrictions. In addition, the ceiling is intended to protect the operator from falling objects from above, and in order to secure the necessary strength to withstand falling objects, extreme weight reduction cannot be performed and the center of gravity that affects the stability of the vehicle It is a factor that the height cannot be lowered.

(2) In the above-mentioned conventional structure, the outside air introduction port of the air cleaner is provided on the rear leg of the head guard in the direction of the vehicle body, and the air cleaner does not suck in the dirty air in the engine room, and the outside of the vehicle body is fresh. Although it has the advantage of sucking in fresh air, its half-air intake port is located close to the operator's ears, so the wind noise of the intake port and the combustion noise of the engine come out of the intake port through the intake path. I hear it as an unpleasant sound.

(3) A vinyl hood (cover) is mounted on the upper side of the ceiling of the head guard to prevent rainwater from splashing on the operator. There are problems such as flapping and tearing.

(4) As a consideration for the operator, when mounting a small container or the like on the ceiling, or when mounting a large-sized rearview mirror having the contents described in "Application No. 4-44065" already filed, It is necessary to make additional holes in the ceiling for mounting and to weld the mounting members.

(5) Since the ceiling of the head guard is made of sheet metal, it will not be restored if it is deformed by a falling object or the like. In addition, rust is generated due to scratches, paint peeling, etc., and the appearance is deteriorated. In particular, since the ceiling part is a part close to the operator, it often causes more problems than other parts.

[0010]

The present invention has been made in view of the above, and in a head guard of an industrial vehicle, front and rear and left and right columns of the head guard, left and right members constituting a roof portion, and left and right directions. By constructing up to 3 cross members with steel material and the top guard made of integrally molded resin as described below, the ceiling can be made lighter and the height of the center of gravity can be reduced to improve stability. .

It is possible to provide a recess for a rain gutter on the entire circumference of the resin top guard, and to easily provide a drainage notch at a position farthest from the operator's seating position. A plurality of transparent parts are provided in the substantially first half area, and the portion between the notches is made of a T-shaped member to ensure the work visibility above, and
It is also possible to easily maintain the strength of falling objects.

A small item storage case is attached to the inner surface at the rear of the top guard with a mounting screw, and the mounting seat of the mounting screw is formed by a box-shaped rib to reinforce the top guard against a falling object from above. It also becomes possible to serve as a rib.

Further, by providing the direction indicating lamp mounting portions on the front left and right ends of the top guard, the special direction indicating lamp can be easily fixed.

Further, it is possible to reduce the exposure of the operator to direct sunlight by providing a rear part behind the top guard, and the rear right end of the top guard has an intake port that conducts inside the right leg of the head guard. By arranging in the upper right part of the shelter, it is possible to prevent the sound generated from the intake port from being heard directly by the operator.

By providing an inverted U-shaped notch for connection at the portion where the top guard is connected to the head guard roof member, the top guard enables extremely easy and firm connection to the head guard roof member. At the same time, the appearance is improved by disposing it at a position that cannot be seen from the outside.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. 4 is a side view of an upper portion of a head guard according to the present invention, FIG. 5 is a view taken in the direction of arrow D in FIG. 4, FIG. 6 is a view taken in the direction of arrow E in FIG. 5, and FIG. 7 is a sectional view taken along line F-F in FIG. FIG. 8 is an explanatory skeleton configuration diagram in a state where the resin top guard 1 in FIG. 4 is removed.

Referring to FIG. 8, the right front leg 2, the right rear leg 3, the left front leg 4, the left rear leg 5, the right and left cross members 6, 7 are made of a strong steel pipe to form a roof portion. The front cross member 8, the rear cross member 9 and the central cross member 10 are passed to the right and left cross members 6 and 7, but at most three cross members or less (the central cross member 10 is omitted. The right and left cross members 7 and 8 are joined together by bolts or welding (in this embodiment, they are joined together by bolts) to form the roof portion.

The top guard 1 integrally molded with resin is the frame roof member 6, 7, 8, 9, 1 described in FIG.
As shown in FIG.
As shown in FIG. 9 which is a detailed view of the G portion of FIG.

The top guard 1, which is integrally molded with resin, has the following characteristic functions and structure by utilizing the degree of freedom of its workability. (1) A rain gutter recess 12 (see FIG. 5) is provided on the entire circumference, and at the same time, drainage notches 13 and 14 are provided at a position farthest from the operator's seating position (normal operating direction in the case of a forklift). Since there is a seating point to the left of, the drainage cutouts are generally provided on the front and rear ends on the right side.)

(2) In order to secure the visibility of the work in the upper part of the front half of the top guard 1, several transparent portions 15 are provided, but since the strength against a falling object is continued, the portion between the notches is shown in FIG. The structure is characterized by a T-shape as indicated by 16.

(3) Further, the notch 13 is provided to prevent rainwater from entering.
A transparent material is adhered to or entirely bonded with 14 or 14 by screws, but the entire transparent material fitting region is formed in a dent shape in order to secure the bonding and sealing properties.

(4) A box-shaped rib 19 into which an insert seat is inserted so that the small item storage case 17 shown in FIG. Although provided, the rib 19 is characterized in that it also serves as a reinforcing rib for the top guard 1 against a falling object from above.

(5) Front and left and right end portions of the top guard 1 are provided with mounting portions 20 to which a direction indicating lamp can be easily fixed, as indicated by reference numeral 20 in FIG.

(6) A rear part 21 is provided behind the top guard 1 to improve the habitability of the operator.

(7) The rear right end of the top guard 1 forms an air suction conducting hole that conducts inside the right rear leg 3 of the head guard. The intake port 22 is arranged in the upper right part of the shelter 21 to prevent rainwater from entering the inside through the intake port 22.
Has a structure that can be attached and removed freely.

(8) The top guard 1 has a mounting method for enabling the head guard roof member to be connected very easily and firmly, and the JJ cross section in FIG. 5 is shown in FIG.
In addition, the inverted U-shaped connecting cutout hole 24 for facilitating the work is arranged inside the fitting portion with the head guard roof member, and is configured to have an excellent appearance at a position visible from the outside. There is.

[0027]

The present invention is constructed as described in detail above, and has the following great effects by making the head guard ceiling part made of resin which secures necessary strength from the conventional sheet metal. . (1) The intake port of the air cleaner can be easily provided on the ceiling portion, and by providing the hood, it is possible to prevent the operator from directly hearing the sound generated from the intake port. (2) It is possible to easily provide a shelter and the like, and it is possible to reduce rainwater and direct sunlight on the operator. (3) The ceiling can be lightened and the height of the center of gravity can be reduced, so that the stability can be improved. (4) The head guard hood is unnecessary, and problems such as accumulation of rainwater in the recess of the hood and fluttering can be solved. (5) Small items can be easily put on the ceiling of the head guard, a large (wide) rearview mirror, and a lamp mounting portion can be easily mounted to improve added value. (6) Due to the resilience, which is a characteristic of the resin, it can be restored even if it is deformed by a fallen object or the like, so that it is possible to prevent a poor appearance and a poor function due to the deformation (the head clearance becomes small due to a dent). (7) Even if there are scratches, paint peeling, etc., rust does not occur and the appearance can be maintained.

[Brief description of drawings]

FIG. 1 is an external perspective view of a conventional forklift truck.

FIG. 2 is a perspective view for explaining the configuration of a conventional head guard.

FIG. 3 is a detailed perspective view of a conventional head guard ceiling portion.

FIG. 4 is a side view of the upper portion of the head guard according to the embodiment of the present invention.

5 is a view on arrow D in FIG. 4. FIG.

6 is a view on arrow E in FIG.

FIG. 7 is a sectional view taken along line FF in FIG.

8 is an explanatory skeleton configuration diagram in a state where a resin top guard in FIG. 4 is removed.

9 is a detailed view of a G portion in FIG.

10 is a cross-sectional view taken along line HH in FIG. 5 and is an explanatory view of a T-shaped member.

11 is a cross-sectional view taken along line JJ in FIG. 5, and is an explanatory view of an inverted U-shaped coupling cutout hole.

[Explanation of symbols]

 1 Top Guard 2 Right Front Leg 3 Right Rear Leg 4 Left Front Leg 5 Left Rear Leg 6 Right Cross Member 7 Left Cross Member 8 Front Cross Member 9 Rear Cross Member 10 Central Cross Member 12 Rain Gutter 13 Drain Notch 14 Notch for drainage 15 Transparent part 16 T-shaped member 17 Small item storage case 18 Mounting screw 19 Rib 20 Directional lamp mounting part 21 Side part 22 Intake port 24 Inverted U-shaped notch hole

Claims (2)

[Claims] 1. In a head guard for an industrial vehicle, front, rear, left and right columns 2, 3, 4, 5, left and right members 7, 6 constituting a roof portion, and a maximum of three cross members 8, 9 in the left and right direction. , 10 are made of steel material, and the top guard 1 is made of integrally molded resin, which is a head guard structure. 2. The resin top guard 1 according to claim 1.
Is provided with a recess 12 for rain gutter all around, a notch 13 and 14 for drainage is provided at a position farthest from the operator's seating position, and a transparent part 15 is provided in a substantially front half of the top guard 1. The T-shaped member 1 is provided at a plurality of locations and the portion between the notches is
6, and a small item storage case 17 is attached to the inner surface at the rear of the top guard 1 with a mounting screw 18.
The mounting seat of 8 is constituted by a box-shaped rib 19, a front direction left and right end portions of the top guard 1 are provided with direction indicating lamp mounting portions 20, and a rear side of the top guard 1 is provided with an edge portion 21,
The rear right end of the top guard 1 is provided with an intake port 22 connected to the inside of the right rear leg 3 of the head guard at the upper right part of the above-mentioned shelter 21, and an inverted U-shape is provided at a portion where the top guard 1 is connected to the head guard roof member. A head guard structure for an industrial vehicle, characterized in that a cutout hole 24 for connection is formed.