Massage appliance, manufacturing method thereof, and manufacturing apparatus

A manufacturing method of a massage appliance, comprising:

• providing a motor, a vibrating piece configured to be driven by the motor, and a case configured to accommodate the motor and the vibrating piece and including a case opening at least in one place;
• accommodating the motor and the vibrating piece in the case;
• preparing a soft cover which includes a cover opening at a position corresponding to the case opening, the soft cover configured to surround an outer surface of the case;
• coating the soft cover on the outer surface of the case to make the case opening communicate with the cover opening;
• forming a space between the outer surface of the case and an inner surface of the soft cover by tightly fixing a peripheral edge of the cover opening over the entire peripheral of a peripheral edge of the case opening;
• injecting a liquid resin as an undiluted solution of a soft resin into the space, the soft resin being interposed between the outer surface of the case and the soft cover, and being of a material which is more flexible than the soft cover, and being thicker than the soft cover;
• and
• curing the liquid resin to become the soft resin.

A manufacturing method of a massage appliance, comprising:

• providing a motor, a vibrating piece configured to be driven by the motor, and a case configured to accommodate the motor and the vibrating piece and including a case opening at least in one place;
• preparing a soft cover which includes a cover opening at a position corresponding to the case opening, the soft cover configured to surround an outer surface of the case;
• coating the soft cover on the outer surface of the case to make the case opening communicate with the cover opening;
• forming a space between the outer surface of the case and an inner surface of the soft cover by tightly fixing a peripheral edge of the cover opening over the entire peripheral of a peripheral edge of the case opening;
• injecting a liquid resin as an undiluted solution of a soft resin into the space, the soft resin being interposed between the outer surface of the case and the soft cover, and being of a material which is more flexible than the soft cover, and being thicker than the soft cover;
• curing the liquid resin to become the soft resin;
• and
• accommodating the motor and the vibrating piece in the case.

A manufacturing apparatus for manufacturing a massage appliance, comprising:

• a molding member being made of at least one molding piece and including a molding member opening, the molding member configured to hold a case coated with a soft cover, the molding member opening configured to communicate with a case opening and a soft cover opening in the at least one molding piece, wherein the case accommodates a motor and a vibrating piece configured to be driven by the motor, wherein the soft cover is configured to surround an outer surface of the case;
• an injection device of which a front portion is inserted and attached to the case opening through the molding member opening and the cover opening and a rear portion is positioned outside the molding member;
• a fastening device configured to fix the rear portion of the injection device to the molding member and tightly fix a peripheral edge of the cover opening over the entire peripheral of a peripheral edge of the case opening, thereby forming a space between the outer surface of the case and an inner surface of the soft cover;
• a negative pressure introducing section configured to be formed to pass through the molding member and communicate with the space between the outer surface of the case and the inner surface of the soft cover to introduce a negative pressure into the space;
• and
• a resin injecting section, provided in the front portion of the injection device to communicate with the space, configured for injecting a liquid resin as an undiluted solution of a soft resin into the space, whereby the liquid resin is then cured to become the soft resin and resulting in the soft resin being interposed between the outer surface of the case and the soft cover, and being of a material which is more flexible than the soft cover, and being thicker than the soft cover.