JPH10212737A - Seat cover in construction machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the accumulation of static electricity by applying conductive material to the seat cover of a seat where an operator sits. SOLUTION: A surface of a seat 3 where an operator sits to operate a construction machine is covered with a seat cover 9. The seat cover 9 is formed of a back cover 9a to cover a back rest part; a cover 9b to cover a seat part; an armrest cover 9c to cover an armrest 7; and a headrest cover 9d to cover a headrest 8 which are severally divided. In the seat cover 9, its back formed of seat material such as synthetic leather and clothes is coating-processed with coating material containing conductive material, and static electricity charged in the operator who sits on the seat 3 to come into contact with the seat cover 9 is neutralized by conductive material contained in the coating material. Thus even in the case where the operator comes into contact the metal part of a machine body, static electricity trouble such as suffering an electric shock or the like can be avoided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of seat covers in construction machines such as hydraulic excavators and bulldozers.

[0002]

2. Description of the Related Art Generally, in construction machines such as hydraulic excavators and bulldozers, an operator sits on a seat (seat) provided in a driver's seat and performs necessary operations. A seat cover may be used to prevent contamination.

[0003]

By the way, the sheet is
A foam material such as polyurethane foam and a skin material such as polyvinyl chloride for covering the foam material are generally used to enhance the cushioning property. Depending on the physical conditions, static electricity is likely to be generated due to friction caused by the operator during driving operation or getting on / off. And when the operator sits on the seat where the static electricity is generated,
The operator is charged with or without the seat cover. When the operator touches the metal part of the fuselage in this charged state, the electric charge stored (charged) in the human body is discharged in an electric shock (for example, corona discharge), and the operator receives an electric shock. There is a problem because it is a cause of the occurrence of static electricity, and there is a problem to be solved by the present invention.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in order to solve these problems in view of the above circumstances, and is a seat cover for a seat on which an operator sits. The seat cover is formed using a conductive material. This can prevent the operator from storing static electricity. In this case, the seat cover of the present invention may have a conductive material incorporated therein. Further, in this case, the seat cover of the present invention may have a back surface coated with a coating material containing a conductive material.

[0005]

FIG. 1 shows an embodiment of the present invention.
This will be described with reference to FIG. In the drawings, 1 is a lower traveling body of a hydraulic shovel, which is a construction machine, and 2 is an upper revolving body that is rotatably mounted on the lower traveling body 1. The upper revolving body 2 has a hydraulic excavator as a front attachment. It is equipped, but in addition, upper revolving superstructure 2
A seat 3 on which an operator sits to operate a construction machine is mounted. The seat 3 includes a back frame 4 forming a backrest, a seat frame 5 forming a seat,
A sheet skin material 4a made of polyvinyl chloride or the like, which is covered with a cushion material 6 made of polyurethane foam or the like interposed between the frames 4, 5,
5a, an armrest 7 which is supported on the left and right sides of the back frame 4 so as to be able to swing up and down, and a headrest 8 which is provided just above the seat frame 5 so as to be vertically movable. The configuration is as follows.

A seat cover 9 is formed along the shape of the seat 3 and is covered on the surface of the seat 3. The seat cover 9 includes a back cover 9a for covering the backrest, and a seat cover for covering the seat. 9b, an armrest cover 9c that covers the armrest 7, and a headrest cover 9d that covers the headrest 8 are separately formed, and the covers 9a, 9b, 9c,
The following materials are used as the material for forming the seat cover 9, which is mounted by attaching 9 d. That is, in the seat cover 9, the back surface of the sheet material S such as synthetic leather or woven fabric is coated with the coating material C containing a conductive material,
The conductive material contained in the coating material C neutralizes the static electricity charged to the operator who is seated on the seat 3 and comes into contact with the seat cover 9 so that the operator is prevented from accumulating static electricity. The setting is such that an electrostatic disturbance such as an electric shock is avoided.

Here, the coating material C containing a conductive material will be described. As shown in FIG. 5, for example, the coating material C is mainly composed of a rubber material 10 mainly composed of an electrically insulating ethylene propylene rubber, and acrylonitrile fibers are fired on the rubber material 10. The carbon fiber 11, which is a conductive material obtained as described above, has a function of neutralizing static electricity by being included. In this case, the carbon fiber 11 is uniformly dispersed. Then, the seat cover 9 is formed by using a coating material C coated on the back surface of the sheet material S with a thickness of approximately 5 mm by a generally known process. And the coating material C thus configured
The neutralization function of the operator sitting on the sheet 3 against static electricity is such that, for example, when the operator is charged with a positive charge, a negative charge is induced at the tip of the carbon fiber 11 exposed on the surface of the coating material C. It is presumed that the positive charge of the operator is neutralized by the separated negative charge moving away to the positive charge side (corona discharge).

In the embodiment of the present invention configured as described above, the seat 3 on which the operator sits is provided with a sheet material S coated with a coating material C containing carbon fibers 11 of a conductive material on the back surface. Since the seat cover 9 using the cover is covered, even if the operator who sits on the seat 3 and operates and operates is charged with static electricity, the static electricity of the operator is still generated by the carbon fibers 11 of the coating material C constituting the seat cover 9. As a result of the neutralization, no static electricity is accumulated in the operator. As a result, even when the operator touches a metal part of the machine body, it is possible to avoid an electrostatic trouble such as receiving an electric shock.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a hydraulic shovel.

FIG. 2 is an exploded perspective view of a sheet.

FIG. 3 is a side view of a seat covered with a seat cover.

FIG. 4 is a front view of a seat covered with a seat cover.

FIG. 5 is an explanatory enlarged sectional view of a seat cover material.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lower traveling body 2 Upper revolving structure 3 Seat 4 Back frame 5 Seat frame 6 Cushion material 7 Armrest 8 Headrest 9 Seat cover 10 Rubber material 11 Carbon fiber S Sheet material C Coating material

Claims (3)

[Claims] 1. A seat cover for a construction machine, wherein the seat cover is a seat cover on which an operator sits, the seat cover being formed using a conductive material. 2. A seat cover in a construction machine according to claim 1, wherein the seat cover includes a conductive material. 3. The seat cover according to claim 1, wherein the rear surface of the seat cover is coated with a coating material containing a conductive material.