Abstract: An electronic keyboard musical instrument includes a body unit of the musical instrument and a stand attached to the body unit. The stand includes a pair of side boards disposed in a standing manner so as to interpose the body unit therebetween. The body unit includes a pair of lateral surfaces. Each of the pair of lateral surfaces faces one of the pair of side boards and includes a first engaging portion disposed thereon. Each of the pair of side boards includes a first engaged portion engaged by the first engaging portion and disposed on an inner lateral surface thereof, which faces one of the pair of lateral surfaces of the body unit. The first engaging portion and the first engaged portion are engaged with each other by at least one of the body unit and the stand being moved in a predetermined direction.

Abstract: An electronic keyboard musical instrument includes a body unit of the musical instrument and a stand attached to the body unit. The stand includes a pair of side boards disposed in a standing manner so as to interpose the body unit therebetween. The body unit includes a pair of lateral surfaces. Each of the pair of lateral surfaces faces one of the pair of side boards and includes a first engaging portion disposed thereon. Each of the pair of side boards includes a first engaged portion engaged by the first engaging portion and disposed on an inner lateral surface thereof, which faces one of the pair of lateral surfaces of the body unit. The first engaging portion and the first engaged portion are engaged with each other by at least one of the body unit and the stand being moved in a predetermined direction.

Abstract: A thermo-welding device used for a thermoplastic resin molded goods is provided to drastically reduce cooling time and increase productivity. The device is used with a welding boss (5a) formed on the molded goods (5) made of thermoplastic resin inserted into a fixing hole 6a formed on the fixed object (6). A tip section of the welding boss (5a) projecting out from the fixing hole 6a is heated and fused to form an extended portion (5c) outside the fixed object (6) to apply to the welding boss (5a) of a molded good (5) in the thermo-welding device used for fixing the fixed object (6) to the molded good. In a portion of the periphery of a heating element having in a tip section thereof an applying side 21 to heat and fuse the welding boss 5a, a slit 23 is provided to exhaust air after the air cools the inside of the heating element 20.

Abstract: A thermo-welding device used for a thermoplastic resin molded goods is provided to drastically reduce cooling time and increase productivity. The device is used with a welding boss (5a) formed on the molded goods (5) made of thermoplastic resin inserted into a fixing hole 6a formed on the fixed object (6). A tip section of the welding boss (5a) projecting out from the fixing hole 6a is heated and fused to form an extended portion (5c) outside the fixed object (6) to apply to the welding boss (5a) of a molded good (5) in the thermo-welding device used for fixing the fixed object (6) to the molded good. In a portion of the periphery of a heating element having in a tip section thereof an applying side 21 to heat and fuse the welding boss 5a, a slit 23 is provided to exhaust air after the air cools the inside of the heating element 20.

Abstract: A key top switch for an electronic musical instrument which can be manufactured at a low cost is provided for preventing noise due to bouncing between an operation panel and a key top, and permitting accurate and easy positioning of the key top at a predetermined position in the longitudinal direction and horizontal direction of the operation panel. The key top switch is disposed in an operation panel of an electronic musical instrument. The key top switch comprises a switch board attached on a back side of the operation panel, and a key top sandwiched between the operation panel and the switch board. The key top includes a contact member in contact with the switch board, and a resilient arm for urging the contact member toward the switch board.

Abstract: A key top switch for an electronic musical instrument which can be manufactured at a low cost is provided for preventing noise due to bouncing between an operation panel and a key top, and permitting accurate and easy positioning of the key top at a predetermined position in the longitudinal direction and horizontal direction of the operation panel. The key top switch is disposed in an operation panel of an electronic musical instrument. The key top switch comprises a switch board attached on a back side of the operation panel, and a key top sandwiched between the operation panel and the switch board. The key top includes a contact member in contact with the switch board, and a resilient arm for urging the contact member toward the switch board.

Abstract: The present invention provides an exterior structure for an electronic keyboard instrument which has excellence in an outward appearance and which can be produced easily without detracting acoustic characteristics. In the present invention, a recess groove 9 extending in a direction in which keyboards 3 are arranged is formed at an upper portion of a back panel 4 of the electronic keyboard instrument 1, a locking edge 8a formed at an upper edge of a speaker cover 8 is fitted into the recess groove 9, and a lower edge of the speaker cover 8 is fixed to a lower portion of the back panel 4 by a screw 11. A lower portion of the back panel 4 is provided with a positioning stopper 4d which abuts against a back surface of a keybed 12 of the electronic keyboard instrument 1, and a fixing piece 4e which abuts against a lower surface of the keybed 12. A thick plate 14 having rigidness is provided around the periphery of the speaker-mounting hole 6.

Abstract: The present invention provides an exterior structure for an electronic keyboard instrument which has excellence in an outward appearance and which can be produced easily without detracting acoustic characteristics. In the present invention, a recess groove 9 extending in a direction in which keyboards 3 are arranged is formed at an upper portion of a back panel 4 of the electronic keyboard instrument 1, a locking edge 8a formed at an upper edge of a speaker cover 8 is fitted into the recess groove 9, and a lower edge of the speaker cover 8 is fixed to a lower portion of the back panel 4 by a screw 11. A lower portion of the back panel 4 is provided with a positioning stopper 4d which abuts against a back surface of a keybed 12 of the electronic keyboard instrument 1, and a fixing piece 4e which abuts against a lower surface of the keybed 12. A thick plate 14 having rigidness is provided around the periphery of the speaker-mounting hole 6.

Abstract: A panel assembly for an electronic keyboard musical instrument is disposed over a substantially entire width in a direction in which keys are arranged. The panel assembly serves to cover electronic circuits or the like contained therein. The panel assembly is made up of two members of a front panel and a rear panel which are divided in the direction in which the keys are arranged. A rear end portion of the front panel is placed on top of a front end portion of the rear panel, and the front panel and the rear panel are connected together by self tapping screws to be screwed from a lower side into the lower surface of the rear end portion of the front panel.

Abstract: A method of controlling rotation of a brush in a cleaning device of an image forming system. In the method, the brush is raced together with the photoreceptor which is in contact with the brush for a predetermined time in a warming-up period before the image forming operation starts, in an image-forming rest period, or when a new cartridge constituted by the photoreceptor and the cleaning device is set into the image forming system, so that the hairs of the brush which have been transformed during the rest of rotation are recovered into their original shapes.