Abstract: A thermosetting damper material which is in a liquid phase at normal temperature is coated on a surface of an automobile fuel tank. Thereafter, the coated thermosetting damper material is heated to thermoset the thermosetting damper material into a damper layer on the surface of the automobile fuel tank. A paint layer may be coated on the surface of the automobile fuel tank over or under the damper layer.

Abstract: An automatic assembling apparatus having two identical assembling jigs. One assembling jig is attached to a robot arm and the assembling jig is then moved by operation of a robot from a setting site to an assembling site for assembling a plurality of parts set thereon at the setting site to an article place at the assembling site. Simultaneously, the plurality of parts are set on the other assembling jig. The two units are alternately attached to the robot arm at the setting site. Two receiving tables, each of which is for mounting thereon each of the assembling jigs, are provided alongside of each other at the setting site. A transfer device is provided to transfer each assembling jig from one receiving table to the other receiving table. The assembling jig attached to the robot arm is detached from the robot arm and placed on the one receiving table and the other assembling jig mounted on the other receiving table is then attached to the robot arm.

Abstract: A hinge pin couples a first hinge receiver mounted on a vehicle body and a second hinge receiver mounted on a door to be installed on the vehicle body. The hinge pin is removed from the vehicle body and the door to separate the vehicle body and the door from each other after the vehicle body and the door have been coated, and the removed pin engages in a hinge pin engaging member. The hinge pin is fed to a position where the vehicle body and the door are to be assembled together, and the hinge pin is removed from the hinge pin engaging member. Then, the removed hinge pin is pressed into the first and second hinge receivers which are aligned with each other, thereby coupling the vehicle body and the door to each other.

Abstract: A hinge pin is temporarily held on a first hinge member on the automobile body by means of a hinge pin support mechanism. A door to be attached to the automobile body is held in position, and a second hinge member on the door is brought into engagement with the first hinge member. The hinge pin is pressed into the second hinge member through the first hinge member to couple the door to the automobile door. The hinge pin support mechanism includes a hinge pin retaining member including a ring separably joined to a plurality of legs. When the hinge pin is pressed into the hinge members, the ring is sheared off from the legs and rides in a peripheral groove defined in the hinge pin. The ring then engages one of the hinge members to prevent the hinge pin from being removed from the hinge members. The door can automatically be attached to the automobile body by a door attaching mechanism and detached from the automobile body by a door detaching mechanism.

Abstract: The present invention provides an automatic assembly system, without using an expensive sensor, to enable an assembling jig to be easily positioned with respect to a particular portion of a car body to which parts are to be assembled, in order to facilitate assembling of the parts while reducing production cost. The basic car-body positioning arrangement preferably includes a reference hole, used for positioning, and a seating piece, used for jacking-up the car body.

Abstract: A hinge pin is temporarily held on a first hinge member on the automobile body by means of a hinge pin support mechanism. A door to be attached to the automobile body is held in position, and a second hinge member on the door is brought into engagement with the first hinge member. The hinge pin is pressed into the second hinge member through the first hinge member to couple the door to the automobile door. The hinge pin support mechanism includes a hinge pin retaining member including a ring separably joined to a plurality of legs. When the hinge pin is pressed into the hinge members, the ring is sheared off from the legs and rides in a peripheral groove defined in the hinge pin. The ring then engages one of the hinge members to prevent the hinge pin from being removed from the hinge members. The door can automatically be attached to the automobile body by a door attaching mechanism and detached from the automobile body by a door detaching mechanism.

Abstract: A hinge pin is temporarily held on a first hinge member on the automobile body by means of a hinge pin support mechanism. A door to be attached to the automobile body is held in position, and a second hinge member on the door is brought into engagement with the first hinge member. The hinge pin is pressed into the second hinge member through the first hinge member to couple the door to the automobile door. The hinge pin support mechanism includes a hinge pin retaining member including a ring separably joined to a plurality of legs. When the hinge pin is pressed into the hinge members, the ring is sheared off from the legs and rides in a peripheral groove defined in the hinge pin. The ring then engages one of the hinge members to prevent the hinge pin from being removed from the hinge members. The door can automatically be attached to the automobile body by a door attaching mechanism and detached from the automobile body by a door detaching mechanism.